diff options
Diffstat (limited to 'src/mint-lib')
34 files changed, 0 insertions, 11244 deletions
diff --git a/src/mint-lib/Makefile.am b/src/mint-lib/Makefile.am deleted file mode 100644 index 171a4246..00000000 --- a/src/mint-lib/Makefile.am +++ /dev/null @@ -1,62 +0,0 @@ -# This Makefile.am is in the public domain -AM_CPPFLAGS = -I$(top_srcdir)/src/include - -if USE_COVERAGE - AM_CFLAGS = --coverage -O0 - XLIB = -lgcov -endif - -lib_LTLIBRARIES = \ - libtalermint.la - -libtalermint_la_LDFLAGS = \ - -version-info 0:0:0 \ - -no-undefined - -libtalermint_la_SOURCES = \ - mint_api_common.c mint_api_common.h \ - mint_api_context.c mint_api_context.h \ - mint_api_json.c mint_api_json.h \ - mint_api_handle.c mint_api_handle.h \ - mint_api_admin.c \ - mint_api_deposit.c \ - mint_api_deposit_wtid.c \ - mint_api_refresh.c \ - mint_api_refresh_link.c \ - mint_api_reserve.c \ - mint_api_wire.c \ - mint_api_wire_deposits.c - -libtalermint_la_LIBADD = \ - -lgnunetutil \ - -ljansson \ - $(XLIB) - -if HAVE_LIBCURL -libtalermint_la_LIBADD += -lcurl -else -if HAVE_LIBGNURL -libtalermint_la_LIBADD += -lgnurl -endif -endif - -check_PROGRAMS = \ - test_mint_api - -TESTS = \ - $(check_PROGRAMS) - -test_mint_api_SOURCES = \ - test_mint_api.c -test_mint_api_LDADD = \ - libtalermint.la \ - $(LIBGCRYPT_LIBS) \ - $(top_builddir)/src/util/libtalerutil.la \ - -lgnunetutil \ - -ljansson - -EXTRA_DIST = \ - test-mint-home/config/mint-common.conf \ - test-mint-home/master.priv \ - test-mint-home/denomkeys/ \ - test-mint-home/signkeys/ diff --git a/src/mint-lib/afl-generate.sh b/src/mint-lib/afl-generate.sh deleted file mode 100644 index 4b505186..00000000 --- a/src/mint-lib/afl-generate.sh +++ /dev/null @@ -1,34 +0,0 @@ -#!/bin/sh -# -# This file is part of TALER -# Copyright (C) 2015 GNUnet e.V. -# -# TALER is free software; you can redistribute it and/or modify it under the -# terms of the GNU Affero General Public License as published by the Free Software -# Foundation; either version 3, or (at your option) any later version. -# -# TALER is distributed in the hope that it will be useful, but WITHOUT ANY -# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR -# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. -# -# You should have received a copy of the GNU Affero General Public License along with -# TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/> -# -# -# This will generate testcases in a directory 'afl-tests', which can then -# be moved into src/mint/afl-tests/ to be run during mint-testing. -# -# This script uses American Fuzzy Loop (AFL) to fuzz the mint to -# automatically create tests with good coverage. You must install -# AFL and set AFL_HOME to the directory where AFL is installed -# before running. Also, a directory "baseline/" should exist with -# templates for inputs for AFL to fuzz. These can be generated -# by running wireshark on loopback while running 'make check' in -# this directory. Save each HTTP request to a new file. -# -# Note that you want to switch 'TESTRUN = NO' and pre-init the -# database before running this, otherwise it will be awfully slow. -# -# Must be run from this directory. -# -$AFL_HOME/afl-fuzz -i baseline/ -m 250 -o afl-tests/ -f /tmp/afl-input taler-mint-httpd -f /tmp/afl-input -d test-mint-home/ -C diff --git a/src/mint-lib/baseline/admin_add_incoming.req b/src/mint-lib/baseline/admin_add_incoming.req deleted file mode 100644 index 677678b5..00000000 --- a/src/mint-lib/baseline/admin_add_incoming.req +++ /dev/null @@ -1,7 +0,0 @@ -POST /admin/add/incoming HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json -Content-Length: 220 - -{"reserve_pub":"TMZCK5CFM1KZQGY1WTF0CEZZPGA0670G94969RF79PA5106ARTK0","amount":{"currency":"EUR","value":5,"fraction":10000},"execution_date":"/Date(1442821651)/","wire":{"type":"TEST","bank":"source bank","account":42}}
\ No newline at end of file diff --git a/src/mint-lib/baseline/deposit.req b/src/mint-lib/baseline/deposit.req deleted file mode 100644 index f50d83e4..00000000 --- a/src/mint-lib/baseline/deposit.req +++ /dev/null @@ -1,8 +0,0 @@ -POST /deposit HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json -Content-Length: 1658 -Expect: 100-continue - -{"ub_sig":"51SPJSSDESGPR80A40M74WV140520818ECG26E9M8S0M6CSH6X334GSN8RW30D9G8MT46CA660W34GSG6MT4AD9K8GT3ECSH6MVK0E2374V38H1M8MR4CDJ66MWK4E1S6MR3GCT28CV32H1Q8N23GCHG70S36C1K8MS3GCSN8RV36D9S710KGD9K6GWKEGJ28GRM4CJ56X1K6DJ18D2KGHA46D13GDA66GVK4GHJ8N13AE9J8RVK6GT184S48E1K6X336G9Q8N142CJ4692M6EA16GRKJD9N6523ADA36X13GG9G70TK6DHN68R36CT18GR4CDSJ6CW3GCT364W46CSR8RV42GJ474SMADSH851K4H9Q8GS42CHS8RV3GCSJ64V46DSN8RSM6HHN6N246D9S6934AH9P6X23JGSH652K0DJ5612KJGA26N242CH35452081918G2J2G0","timestamp":"/Date(1442821652)/","f":{"currency":"EUR","value":5,"fraction":0},"wire":{"type":"TEST","bank":"dest bank","account":42},"coin_pub":"JXWK4NS0H2W4V4BETQ90CCEDADP6QQ3MV3YZ7RV2KXEM8PWXE8Q0","H_wire":"YQED9FDYPKK2QQYB3FS19Y15ZMKBAXJP2C73CXASAF1KM6ZYY723TEJ3HBR6D864A7X5W58G92QJ0A9PFMZNB81ZP9NJAQQCCABM4RG","H_contract":"1CMEEFQ5S4QJGGAMVYFV07XQRHQA311CR2MTRNC5M9KZV6ETDV1SY00WJFEV2CG9BXQTEQPZAF8A54C2HX32TZCN20VBGPFPS2Z16B0","merchant_pub":"C36TEXQXFW00170C2EJ66ZR0000CX9VPZNZG00109NX020000000","denom_pub":"51R7ARKCD5HJTTV5F4G0M818E9SP280A40G2GVH04CR30GT58S2K2HJ16H336C9N8CVK4E9N6H1MADHH61330HHM6N1K8E1H8RVKJH256D1M6E1K8RWKJGSH8S2M6DJ170TK2H266GTK8DSS64RKJDJ26D144DJ474SK0GHQ711MAD9G752M2CJ58S1KJDA570SK2E9G8N23GCJ28S146DHH610K2H1Q8CW3GGA16S146H9G68TKACSQ6914CE1H691K2E9N6RWM8H9P8CWM2H9S8GSK0H9P6D1K6H9G6X0M4C2171144HJ46N334H9J692M4H9M8MR4CCJ46GRKEGA46533CDJ38MV4CH9K892MAH1P8S2K6D9K6N246E256H244G9Q6D346GJ56S23JGHJ690KADHJ8H242H2575132CSM6X1M4G9N6RR48E9H8MVM8E9354520818CMG26C1H60R30C935452081918G2J2G0","transaction_id":1,"refund_deadline":"/Date(0)/","coin_sig":"X16E0DP8C2BJNVNX09G24FFC5GA4W7RN2YXZP9WJTAN9BY6B4GMA39QNYR51XNNEZ3H1J7TP0K9G55JZ8V7WS7CZMD7E64HWYBFWM00"}
\ No newline at end of file diff --git a/src/mint-lib/baseline/keys.req b/src/mint-lib/baseline/keys.req deleted file mode 100644 index a9503a86..00000000 --- a/src/mint-lib/baseline/keys.req +++ /dev/null @@ -1,7 +0,0 @@ -GET /keys HTTP/1.1
-User-Agent: Wget/1.16.3 (linux-gnu)
-Accept: */*
-Accept-Encoding: identity
-Host: 127.0.0.1:8081
-Connection: Keep-Alive
-
diff --git a/src/mint-lib/baseline/refresh_link.req b/src/mint-lib/baseline/refresh_link.req deleted file mode 100644 index acf3dff5..00000000 --- a/src/mint-lib/baseline/refresh_link.req +++ /dev/null @@ -1,5 +0,0 @@ -GET /refresh/link?coin_pub=WQHES0X5XK43VBG1Y8FXR2YEJM04HQVMDTCS07MH691XWADG8QCG HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json - diff --git a/src/mint-lib/baseline/refresh_melt.req b/src/mint-lib/baseline/refresh_melt.req deleted file mode 100644 index 98b5b638..00000000 --- a/src/mint-lib/baseline/refresh_melt.req +++ /dev/null @@ -1,8 +0,0 @@ -POST /refresh/melt HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json -Content-Length: 34136 -Expect: 100-continue - 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diff --git a/src/mint-lib/baseline/refresh_reveal.req b/src/mint-lib/baseline/refresh_reveal.req deleted file mode 100644 index 3fb14396..00000000 --- a/src/mint-lib/baseline/refresh_reveal.req +++ /dev/null @@ -1,7 +0,0 @@ -POST /refresh/reveal HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json -Content-Length: 255 - -{"session_hash":"V97SB8T670M9V71D1Q0KVQ4GSJCVQ5AAKTTH9QKT0ZJZZBFNZAV4NA8NMWRRGVPFEBEGB6ANCN9BPQASJ40TM4Y1C49648TJJ07PGSG","transfer_privs":[["EQKJA401A9NJ2YJDFZJ1EV8AYXBHWZB6NT5T0TWSJHVKVDM6W8A0"],["TKDJ4DF3GZVG0DGAB9E3RGBGSTANYB6JVVWXJGPMB2AY4VQNTBA0"]]}
\ No newline at end of file diff --git a/src/mint-lib/baseline/reserve_status.req b/src/mint-lib/baseline/reserve_status.req deleted file mode 100644 index 4f988f66..00000000 --- a/src/mint-lib/baseline/reserve_status.req +++ /dev/null @@ -1,4 +0,0 @@ -GET /reserve/status?reserve_pub=TMZCK5CFM1KZQGY1WTF0CEZZPGA0670G94969RF79PA5106ARTK0 HTTP/1.1 -Host: localhost:8081 -Accept: */* - diff --git a/src/mint-lib/baseline/reserve_withdraw.req b/src/mint-lib/baseline/reserve_withdraw.req deleted file mode 100644 index 48495025..00000000 --- a/src/mint-lib/baseline/reserve_withdraw.req +++ /dev/null @@ -1,7 +0,0 @@ -POST /reserve/withdraw HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json -Content-Length: 919 - -{"coin_ev":"Q5X8A8TCBFH7E5BMY7HSB17SHFTM1JPJGV61P2CA7Z9EXG8P2HYS69B31NZESKXHSZHNJ2DQN3CC2AWFNC6V90J577JD3TXBMAY8Y5M9V60KKT73Z1DW24JFSNAK91G1F2WT55ADP1EG7N5F9AY7A7ZJD03MPYSH0RDP7SVZS2KRPA5JRHFR4GDJ59CFNE7A43M95ZKQHQAS8","denom_pub":"51R7ARKCD5HJTTV5F4G0M818E9SP280A40G2GVH04CR30GT58S2K2HJ16H336C9N8CVK4E9N6H1MADHH61330HHM6N1K8E1H8RVKJH256D1M6E1K8RWKJGSH8S2M6DJ170TK2H266GTK8DSS64RKJDJ26D144DJ474SK0GHQ711MAD9G752M2CJ58S1KJDA570SK2E9G8N23GCJ28S146DHH610K2H1Q8CW3GGA16S146H9G68TKACSQ6914CE1H691K2E9N6RWM8H9P8CWM2H9S8GSK0H9P6D1K6H9G6X0M4C2171144HJ46N334H9J692M4H9M8MR4CCJ46GRKEGA46533CDJ38MV4CH9K892MAH1P8S2K6D9K6N246E256H244G9Q6D346GJ56S23JGHJ690KADHJ8H242H2575132CSM6X1M4G9N6RR48E9H8MVM8E9354520818CMG26C1H60R30C935452081918G2J2G0","reserve_pub":"TMZCK5CFM1KZQGY1WTF0CEZZPGA0670G94969RF79PA5106ARTK0","reserve_sig":"8427B3RTB217124EB1C37ZVJFC08KN17RHGHE9ENZQMQVJ0S11SAX6H8Z06SWCKT06DRQ9DQ8XD786XKQ94T27PYR9GC9EMT1Y02W10"}
\ No newline at end of file diff --git a/src/mint-lib/baseline/wire.req b/src/mint-lib/baseline/wire.req deleted file mode 100644 index a4f1d074..00000000 --- a/src/mint-lib/baseline/wire.req +++ /dev/null @@ -1,5 +0,0 @@ -GET /wire HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json - diff --git a/src/mint-lib/baseline/wire_sepa.req b/src/mint-lib/baseline/wire_sepa.req deleted file mode 100644 index 80d3d461..00000000 --- a/src/mint-lib/baseline/wire_sepa.req +++ /dev/null @@ -1,5 +0,0 @@ -GET /wire/sepa HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json - diff --git a/src/mint-lib/baseline/wire_test.req b/src/mint-lib/baseline/wire_test.req deleted file mode 100644 index 684352c9..00000000 --- a/src/mint-lib/baseline/wire_test.req +++ /dev/null @@ -1,5 +0,0 @@ -GET /wire/test HTTP/1.1 -Host: localhost:8081 -Accept: */* -Content-Type: application/json - diff --git a/src/mint-lib/mint_api_admin.c b/src/mint-lib/mint_api_admin.c deleted file mode 100644 index 641e0690..00000000 --- a/src/mint-lib/mint_api_admin.c +++ /dev/null @@ -1,254 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_admin.c - * @brief Implementation of the /admin/ requests of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * @brief An admin/add/incoming Handle - */ -struct TALER_MINT_AdminAddIncomingHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * JSON encoding of the request to POST. - */ - char *json_enc; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * HTTP headers for the request. - */ - struct curl_slist *headers; - - /** - * Function to call with the result. - */ - TALER_MINT_AdminAddIncomingResultCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - -}; - - -/** - * Function called when we're done processing the - * HTTP /admin/add/incoming request. - * - * @param cls the `struct TALER_MINT_AdminAddIncomingHandle` - * @param eh the curl request handle - */ -static void -handle_admin_add_incoming_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_AdminAddIncomingHandle *aai = cls; - long response_code; - json_t *json; - - aai->job = NULL; - json = MAC_download_get_result (&aai->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_FORBIDDEN: - /* Access denied */ - break; - case MHD_HTTP_UNAUTHORIZED: - /* Nothing really to verify, mint says one of the signatures is - invalid; as we checked them, this should never happen, we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, this should never - happen, we should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - aai->cb (aai->cb_cls, - response_code, - json); - json_decref (json); - TALER_MINT_admin_add_incoming_cancel (aai); -} - - -/** - * Notify the mint that we have received an incoming transaction - * which fills a reserve. Note that this API is an administrative - * API and thus not accessible to typical mint clients, but only - * to the operators of the mint. - * - * @param mint the mint handle; the mint must be ready to operate - * @param reserve_pub public key of the reserve - * @param amount amount that was deposited - * @param execution_date when did we receive the amount - * @param wire wire details - * @param res_cb the callback to call when the final result for this request is available - * @param res_cb_cls closure for the above callback - * @return NULL - * if the inputs are invalid (i.e. invalid amount). - * In this case, the callback is not called. - */ -struct TALER_MINT_AdminAddIncomingHandle * -TALER_MINT_admin_add_incoming (struct TALER_MINT_Handle *mint, - const struct TALER_ReservePublicKeyP *reserve_pub, - const struct TALER_Amount *amount, - struct GNUNET_TIME_Absolute execution_date, - const json_t *wire, - TALER_MINT_AdminAddIncomingResultCallback res_cb, - void *res_cb_cls) -{ - struct TALER_MINT_AdminAddIncomingHandle *aai; - struct TALER_MINT_Context *ctx; - json_t *admin_obj; - CURL *eh; - - GNUNET_assert (GNUNET_OK == - TALER_round_abs_time (&execution_date)); - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - admin_obj = json_pack ("{s:o, s:o," /* reserve_pub/amount */ - " s:o, s:O}", /* execution_Date/wire */ - "reserve_pub", TALER_json_from_data (reserve_pub, - sizeof (*reserve_pub)), - "amount", TALER_json_from_amount (amount), - "execution_date", TALER_json_from_abs (execution_date), - "wire", wire); - aai = GNUNET_new (struct TALER_MINT_AdminAddIncomingHandle); - aai->mint = mint; - aai->cb = res_cb; - aai->cb_cls = res_cb_cls; - aai->url = MAH_path_to_url (mint, "/admin/add/incoming"); - - eh = curl_easy_init (); - GNUNET_assert (NULL != (aai->json_enc = - json_dumps (admin_obj, - JSON_COMPACT))); - json_decref (admin_obj); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - aai->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDS, - aai->json_enc)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDSIZE, - strlen (aai->json_enc))); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &aai->db)); - ctx = MAH_handle_to_context (mint); - aai->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_admin_add_incoming_finished, - aai); - return aai; -} - - -/** - * Cancel an add incoming. This function cannot be used on a request - * handle if a response is already served for it. - * - * @param aai the admin add incoming request handle - */ -void -TALER_MINT_admin_add_incoming_cancel (struct TALER_MINT_AdminAddIncomingHandle *aai) -{ - if (NULL != aai->job) - { - MAC_job_cancel (aai->job); - aai->job = NULL; - } - curl_slist_free_all (aai->headers); - GNUNET_free_non_null (aai->db.buf); - GNUNET_free (aai->url); - GNUNET_free (aai->json_enc); - GNUNET_free (aai); -} - - -/* end of mint_api_admin.c */ diff --git a/src/mint-lib/mint_api_common.c b/src/mint-lib/mint_api_common.c deleted file mode 100644 index faba38c7..00000000 --- a/src/mint-lib/mint_api_common.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_common.c - * @brief common functions for the mint API - * @author Christian Grothoff - */ -#include "platform.h" -#include "mint_api_common.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * Verify a coins transaction history as returned by the mint. - * - * @param currency expected currency for the coin - * @param coin_pub public key of the coin - * @param history history of the coin in json encoding - * @param[out] total how much of the coin has been spent according to @a history - * @return #GNUNET_OK if @a history is valid, #GNUNET_SYSERR if not - */ -int -TALER_MINT_verify_coin_history_ (const char *currency, - const struct TALER_CoinSpendPublicKeyP *coin_pub, - json_t *history, - struct TALER_Amount *total) -{ - size_t len; - size_t off; - - if (NULL == history) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - len = json_array_size (history); - if (0 == len) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - TALER_amount_get_zero (currency, - total); - for (off=0;off<len;off++) - { - json_t *transaction; - struct TALER_Amount amount; - struct TALER_CoinSpendSignatureP sig; - void *details; - size_t details_size; - const char *type; - struct MAJ_Specification spec[] = { - MAJ_spec_amount ("amount", - &amount), - MAJ_spec_string ("type", - &type), - MAJ_spec_fixed_auto ("signature", - &sig), - MAJ_spec_varsize ("details", - &details, - &details_size), - MAJ_spec_end - }; - - transaction = json_array_get (history, - off); - if (GNUNET_OK != - MAJ_parse_json (transaction, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (0 == strcasecmp (type, - "DEPOSIT")) - { - const struct TALER_DepositRequestPS *dr; - struct TALER_Amount dr_amount; - - if (details_size != sizeof (struct TALER_DepositRequestPS)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - dr = (const struct TALER_DepositRequestPS *) details; - if (details_size != ntohl (dr->purpose.size)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_COIN_DEPOSIT, - &dr->purpose, - &sig.eddsa_signature, - &coin_pub->eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - - // FIXME: check sig! - TALER_amount_ntoh (&dr_amount, - &dr->amount_with_fee); - if (0 != TALER_amount_cmp (&dr_amount, - &amount)) - { - GNUNET_break (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - } - else if (0 == strcasecmp (type, - "MELT")) - { - const struct TALER_RefreshMeltCoinAffirmationPS *rm; - struct TALER_Amount rm_amount; - - if (details_size != sizeof (struct TALER_RefreshMeltCoinAffirmationPS)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - rm = (const struct TALER_RefreshMeltCoinAffirmationPS *) details; - if (details_size != ntohl (rm->purpose.size)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_COIN_MELT, - &rm->purpose, - &sig.eddsa_signature, - &coin_pub->eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - TALER_amount_ntoh (&rm_amount, - &rm->amount_with_fee); - if (0 != TALER_amount_cmp (&rm_amount, - &amount)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - } - else - { - /* signature not supported, new version on server? */ - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - TALER_amount_add (total, - total, - &amount)) - { - /* overflow in history already!? inconceivable! Bad mint! */ - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - MAJ_parse_free (spec); - } - return GNUNET_OK; -} - - -/* end of mint_api_common.c */ diff --git a/src/mint-lib/mint_api_common.h b/src/mint-lib/mint_api_common.h deleted file mode 100644 index 10a20214..00000000 --- a/src/mint-lib/mint_api_common.h +++ /dev/null @@ -1,41 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_common.h - * @brief common functions for the mint API - * @author Christian Grothoff - */ -#include <jansson.h> -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" - -/** - * Verify a coins transaction history as returned by the mint. - * - * @param currency expected currency for the coin - * @param coin_pub public key of the coin - * @param history history of the coin in json encoding - * @param[out] total how much of the coin has been spent according to @a history - * @return #GNUNET_OK if @a history is valid, #GNUNET_SYSERR if not - */ -int -TALER_MINT_verify_coin_history_ (const char *currency, - const struct TALER_CoinSpendPublicKeyP *coin_pub, - json_t *history, - struct TALER_Amount *total); - -/* end of mint_api_common.h */ diff --git a/src/mint-lib/mint_api_context.c b/src/mint-lib/mint_api_context.c deleted file mode 100644 index 2767906b..00000000 --- a/src/mint-lib/mint_api_context.c +++ /dev/null @@ -1,537 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_context.c - * @brief Implementation of the context part of the mint's HTTP API - * @author Sree Harsha Totakura <sreeharsha@totakura.in> - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include "taler_mint_service.h" -#include "mint_api_context.h" - - -/** - * Log error related to CURL operations. - * - * @param type log level - * @param function which function failed to run - * @param code what was the curl error code - */ -#define CURL_STRERROR(type, function, code) \ - GNUNET_log (type, \ - "Curl function `%s' has failed at `%s:%d' with error: %s\n", \ - function, __FILE__, __LINE__, curl_easy_strerror (code)); - -/** - * Print JSON parsing related error information - */ -#define JSON_WARN(error) \ - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, \ - "JSON parsing failed at %s:%u: %s (%s)\n", \ - __FILE__, __LINE__, error.text, error.source) - - -/** - * Failsafe flag. Raised if our constructor fails to initialize - * the Curl library. - */ -static int TALER_MINT_curl_fail; - - -/** - * Jobs are CURL requests running within a `struct TALER_MINT_Context`. - */ -struct MAC_Job -{ - - /** - * We keep jobs in a DLL. - */ - struct MAC_Job *next; - - /** - * We keep jobs in a DLL. - */ - struct MAC_Job *prev; - - /** - * Easy handle of the job. - */ - CURL *easy_handle; - - /** - * Context this job runs in. - */ - struct TALER_MINT_Context *ctx; - - /** - * Function to call upon completion. - */ - MAC_JobCompletionCallback jcc; - - /** - * Closure for @e jcc. - */ - void *jcc_cls; - -}; - - -/** - * Context - */ -struct TALER_MINT_Context -{ - /** - * Curl multi handle - */ - CURLM *multi; - - /** - * Curl share handle - */ - CURLSH *share; - - /** - * We keep jobs in a DLL. - */ - struct MAC_Job *jobs_head; - - /** - * We keep jobs in a DLL. - */ - struct MAC_Job *jobs_tail; - - /** - * HTTP header "application/json", created once and used - * for all requests that need it. - */ - struct curl_slist *json_header; - -}; - - -/** - * Initialise this library. This function should be called before using any of - * the following functions. - * - * @return library context - */ -struct TALER_MINT_Context * -TALER_MINT_init () -{ - struct TALER_MINT_Context *ctx; - CURLM *multi; - CURLSH *share; - - if (TALER_MINT_curl_fail) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Curl was not initialised properly\n"); - return NULL; - } - if (NULL == (multi = curl_multi_init ())) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to create a Curl multi handle\n"); - return NULL; - } - if (NULL == (share = curl_share_init ())) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to create a Curl share handle\n"); - return NULL; - } - ctx = GNUNET_new (struct TALER_MINT_Context); - ctx->multi = multi; - ctx->share = share; - GNUNET_assert (NULL != (ctx->json_header = - curl_slist_append (NULL, - "Content-Type: application/json"))); - return ctx; -} - - -/** - * Schedule a CURL request to be executed and call the given @a jcc - * upon its completion. Note that the context will make use of the - * CURLOPT_PRIVATE facility of the CURL @a eh. Applications can - * instead use #MAC_easy_to_closure to extract the @a jcc_cls argument - * from a valid @a eh afterwards. - * - * This function modifies the CURL handle to add the - * "Content-Type: application/json" header if @a add_json is set. - * - * @param ctx context to execute the job in - * @param eh curl easy handle for the request, will - * be executed AND cleaned up - * @param add_json add "application/json" content type header - * @param jcc callback to invoke upon completion - * @param jcc_cls closure for @a jcc - */ -struct MAC_Job * -MAC_job_add (struct TALER_MINT_Context *ctx, - CURL *eh, - int add_json, - MAC_JobCompletionCallback jcc, - void *jcc_cls) -{ - struct MAC_Job *job; - - if (GNUNET_YES == add_json) - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_HTTPHEADER, - ctx->json_header)); - - job = GNUNET_new (struct MAC_Job); - job->easy_handle = eh; - job->ctx = ctx; - job->jcc = jcc; - job->jcc_cls = jcc_cls; - GNUNET_CONTAINER_DLL_insert (ctx->jobs_head, - ctx->jobs_tail, - job); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_PRIVATE, - job)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_SHARE, - ctx->share)); - GNUNET_assert (CURLM_OK == - curl_multi_add_handle (ctx->multi, - eh)); - return job; -} - - -/** - * Obtain the `jcc_cls` argument from an `eh` that was - * given to #MAC_job_add(). - * - * @param eh easy handle that was used - * @return the `jcc_cls` that was given to #MAC_job_add(). - */ -void * -MAC_easy_to_closure (CURL *eh) -{ - struct MAC_Job *job; - - GNUNET_assert (CURLE_OK == - curl_easy_getinfo (eh, - CURLINFO_PRIVATE, - (char **) &job)); - return job->jcc_cls; -} - - -/** - * Cancel a job. Must only be called before the job completion - * callback is called for the respective job. - * - * @param job job to cancel - */ -void -MAC_job_cancel (struct MAC_Job *job) -{ - struct TALER_MINT_Context *ctx = job->ctx; - - GNUNET_CONTAINER_DLL_remove (ctx->jobs_head, - ctx->jobs_tail, - job); - GNUNET_assert (CURLM_OK == - curl_multi_remove_handle (ctx->multi, - job->easy_handle)); - curl_easy_cleanup (job->easy_handle); - GNUNET_free (job); -} - - -/** - * Run the main event loop for the Taler interaction. - * - * @param ctx the library context - */ -void -TALER_MINT_perform (struct TALER_MINT_Context *ctx) -{ - CURLMsg *cmsg; - struct MAC_Job *job; - int n_running; - int n_completed; - - (void) curl_multi_perform (ctx->multi, - &n_running); - while (NULL != (cmsg = curl_multi_info_read (ctx->multi, - &n_completed))) - { - /* Only documented return value is CURLMSG_DONE */ - GNUNET_break (CURLMSG_DONE == cmsg->msg); - GNUNET_assert (CURLE_OK == - curl_easy_getinfo (cmsg->easy_handle, - CURLINFO_PRIVATE, - (char **) &job)); - GNUNET_assert (job->ctx == ctx); - job->jcc (job->jcc_cls, - cmsg->easy_handle); - MAC_job_cancel (job); - } -} - - -/** - * Obtain the information for a select() call to wait until - * #TALER_MINT_perform() is ready again. Note that calling - * any other TALER_MINT-API may also imply that the library - * is again ready for #TALER_MINT_perform(). - * - * Basically, a client should use this API to prepare for select(), - * then block on select(), then call #TALER_MINT_perform() and then - * start again until the work with the context is done. - * - * This function will NOT zero out the sets and assumes that @a max_fd - * and @a timeout are already set to minimal applicable values. It is - * safe to give this API FD-sets and @a max_fd and @a timeout that are - * already initialized to some other descriptors that need to go into - * the select() call. - * - * @param ctx context to get the event loop information for - * @param read_fd_set will be set for any pending read operations - * @param write_fd_set will be set for any pending write operations - * @param except_fd_set is here because curl_multi_fdset() has this argument - * @param max_fd set to the highest FD included in any set; - * if the existing sets have no FDs in it, the initial - * value should be "-1". (Note that `max_fd + 1` will need - * to be passed to select().) - * @param timeout set to the timeout in milliseconds (!); -1 means - * no timeout (NULL, blocking forever is OK), 0 means to - * proceed immediately with #TALER_MINT_perform(). - */ -void -TALER_MINT_get_select_info (struct TALER_MINT_Context *ctx, - fd_set *read_fd_set, - fd_set *write_fd_set, - fd_set *except_fd_set, - int *max_fd, - long *timeout) -{ - long to; - int m; - - m = -1; - GNUNET_assert (CURLM_OK == - curl_multi_fdset (ctx->multi, - read_fd_set, - write_fd_set, - except_fd_set, - &m)); - to = *timeout; - *max_fd = GNUNET_MAX (m, *max_fd); - GNUNET_assert (CURLM_OK == - curl_multi_timeout (ctx->multi, - &to)); - - /* Only if what we got back from curl is smaller than what we - already had (-1 == infinity!), then update timeout */ - if ( (to < *timeout) && - (-1 != to) ) - *timeout = to; - if ( (-1 == (*timeout)) && - (NULL != ctx->jobs_head) ) - *timeout = to; -} - - -/** - * Cleanup library initialisation resources. This function should be called - * after using this library to cleanup the resources occupied during library's - * initialisation. - * - * @param ctx the library context - */ -void -TALER_MINT_fini (struct TALER_MINT_Context *ctx) -{ - /* all jobs must have been cancelled at this time, assert this */ - GNUNET_assert (NULL == ctx->jobs_head); - curl_share_cleanup (ctx->share); - curl_multi_cleanup (ctx->multi); - curl_slist_free_all (ctx->json_header); - GNUNET_free (ctx); -} - - -/** - * Callback used when downloading the reply to an HTTP request. - * Just appends all of the data to the `buf` in the - * `struct MAC_DownloadBuffer` for further processing. The size of - * the download is limited to #GNUNET_MAX_MALLOC_CHECKED, if - * the download exceeds this size, we abort with an error. - * - * @param bufptr data downloaded via HTTP - * @param size size of an item in @a bufptr - * @param nitems number of items in @a bufptr - * @param cls the `struct KeysRequest` - * @return number of bytes processed from @a bufptr - */ -size_t -MAC_download_cb (char *bufptr, - size_t size, - size_t nitems, - void *cls) -{ - struct MAC_DownloadBuffer *db = cls; - size_t msize; - void *buf; - - if (0 == size * nitems) - { - /* Nothing (left) to do */ - return 0; - } - msize = size * nitems; - if ( (msize + db->buf_size) >= GNUNET_MAX_MALLOC_CHECKED) - { - db->eno = ENOMEM; - return 0; /* signals an error to curl */ - } - db->buf = GNUNET_realloc (db->buf, - db->buf_size + msize); - buf = db->buf + db->buf_size; - memcpy (buf, bufptr, msize); - db->buf_size += msize; - return msize; -} - - -/** - * Obtain information about the final result about the - * HTTP download. If the download was successful, parses - * the JSON in the @a db and returns it. Also returns - * the HTTP @a response_code. If the download failed, - * the return value is NULL. The response code is set - * in any case, on download errors to zero. - * - * Calling this function also cleans up @a db. - * - * @param db download buffer - * @param eh CURL handle (to get the response code) - * @param[out] response_code set to the HTTP response code - * (or zero if we aborted the download, i.e. - * because the response was too big, or if - * the JSON we received was malformed). - * @return NULL if downloading a JSON reply failed - */ -json_t * -MAC_download_get_result (struct MAC_DownloadBuffer *db, - CURL *eh, - long *response_code) -{ - json_t *json; - json_error_t error; - char *ct; - - if ( (CURLE_OK != - curl_easy_getinfo (eh, - CURLINFO_CONTENT_TYPE, - &ct)) || - (NULL == ct) || - (0 != strcasecmp (ct, - "application/json")) ) - { - /* No content type or explicitly not JSON, refuse to parse - (but keep response code) */ - if (CURLE_OK != - curl_easy_getinfo (eh, - CURLINFO_RESPONSE_CODE, - response_code)) - { - /* unexpected error... */ - GNUNET_break (0); - *response_code = 0; - } - return NULL; - } - - json = NULL; - if (0 == db->eno) - { - json = json_loadb (db->buf, - db->buf_size, - JSON_REJECT_DUPLICATES | JSON_DISABLE_EOF_CHECK, - &error); - if (NULL == json) - { - JSON_WARN (error); - *response_code = 0; - } - } - GNUNET_free_non_null (db->buf); - db->buf = NULL; - db->buf_size = 0; - if (NULL != json) - { - if (CURLE_OK != - curl_easy_getinfo (eh, - CURLINFO_RESPONSE_CODE, - response_code)) - { - /* unexpected error... */ - GNUNET_break (0); - *response_code = 0; - } - } - return json; -} - - -/** - * Initial global setup logic, specifically runs the Curl setup. - */ -__attribute__ ((constructor)) -void -TALER_MINT_constructor__ (void) -{ - CURLcode ret; - - if (CURLE_OK != (ret = curl_global_init (CURL_GLOBAL_DEFAULT))) - { - CURL_STRERROR (GNUNET_ERROR_TYPE_ERROR, - "curl_global_init", - ret); - TALER_MINT_curl_fail = 1; - } -} - - -/** - * Cleans up after us, specifically runs the Curl cleanup. - */ -__attribute__ ((destructor)) -void -TALER_MINT_destructor__ (void) -{ - if (TALER_MINT_curl_fail) - return; - curl_global_cleanup (); -} - -/* end of mint_api_context.c */ diff --git a/src/mint-lib/mint_api_context.h b/src/mint-lib/mint_api_context.h deleted file mode 100644 index 181a4808..00000000 --- a/src/mint-lib/mint_api_context.h +++ /dev/null @@ -1,169 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_context.h - * @brief Internal interface to the context part of the mint's HTTP API - * @author Sree Harsha Totakura <sreeharsha@totakura.in> - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "taler_signatures.h" - - -/** - * Entry in the context's job queue. - */ -struct MAC_Job; - -/** - * Function to call upon completion of a job. - * - * @param cls closure - * @param eh original easy handle (for inspection) - */ -typedef void -(*MAC_JobCompletionCallback)(void *cls, - CURL *eh); - - -/** - * Schedule a CURL request to be executed and call the given @a jcc - * upon its completion. Note that the context will make use of the - * CURLOPT_PRIVATE facility of the CURL @a eh. Applications can - * instead use #MAC_easy_to_closure to extract the @a jcc_cls argument - * from a valid @a eh afterwards. - * - * This function modifies the CURL handle to add the - * "Content-Type: application/json" header if @a add_json is set. - * - * @param ctx context to execute the job in - * @param eh curl easy handle for the request, will - * be executed AND cleaned up - * @param add_json add "application/json" content type header - * @param jcc callback to invoke upon completion - * @param jcc_cls closure for @a jcc - */ -struct MAC_Job * -MAC_job_add (struct TALER_MINT_Context *ctx, - CURL *eh, - int add_json, - MAC_JobCompletionCallback jcc, - void *jcc_cls); - - -/** - * Obtain the `jcc_cls` argument from an `eh` that was - * given to #MAC_job_add(). - * - * @param eh easy handle that was used - * @return the `jcc_cls` that was given to #MAC_job_add(). - */ -void * -MAC_easy_to_closure (CURL *eh); - - -/** - * Cancel a job. Must only be called before the job completion - * callback is called for the respective job. - * - * @param job job to cancel - */ -void -MAC_job_cancel (struct MAC_Job *job); - - -/** - * @brief Buffer data structure we use to buffer the HTTP download - * before giving it to the JSON parser. - */ -struct MAC_DownloadBuffer -{ - - /** - * Download buffer - */ - void *buf; - - /** - * The size of the download buffer - */ - size_t buf_size; - - /** - * Error code (based on libc errno) if we failed to download - * (i.e. response too large). - */ - int eno; - -}; - - -/** - * Callback used when downloading the reply to an HTTP request. - * Just appends all of the data to the `buf` in the - * `struct MAC_DownloadBuffer` for further processing. The size of - * the download is limited to #GNUNET_MAX_MALLOC_CHECKED, if - * the download exceeds this size, we abort with an error. - * - * Should be used by the various routines as the - * CURLOPT_WRITEFUNCTION. A `struct MAC_DownloadBuffer` needs to be - * passed to the CURLOPT_WRITEDATA. - * - * Afterwards, `eno` needs to be checked to ensure that the download - * completed correctly. - * - * @param bufptr data downloaded via HTTP - * @param size size of an item in @a bufptr - * @param nitems number of items in @a bufptr - * @param cls the `struct KeysRequest` - * @return number of bytes processed from @a bufptr - */ -size_t -MAC_download_cb (char *bufptr, - size_t size, - size_t nitems, - void *cls); - - -/** - * Obtain information about the final result about the - * HTTP download. If the download was successful, parses - * the JSON in the @a db and returns it. Also returns - * the HTTP @a response_code. If the download failed, - * the return value is NULL. The response code is set - * in any case, on download errors to zero. - * - * Calling this function also cleans up @a db. - * - * @param db download buffer - * @param eh CURL handle (to get the response code) - * @param[out] response_code set to the HTTP response code - * (or zero if we aborted the download, i.e. - * because the response was too big, or if - * the JSON we received was malformed). - * @return NULL if downloading a JSON reply failed - */ -json_t * -MAC_download_get_result (struct MAC_DownloadBuffer *db, - CURL *eh, - long *response_code); - - -/* end of mint_api_context.h */ diff --git a/src/mint-lib/mint_api_deposit.c b/src/mint-lib/mint_api_deposit.c deleted file mode 100644 index 40037292..00000000 --- a/src/mint-lib/mint_api_deposit.c +++ /dev/null @@ -1,569 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_deposit.c - * @brief Implementation of the /deposit request of the mint's HTTP API - * @author Sree Harsha Totakura <sreeharsha@totakura.in> - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_common.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * @brief A Deposit Handle - */ -struct TALER_MINT_DepositHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * JSON encoding of the request to POST. - */ - char *json_enc; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_DepositResultCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Information the mint should sign in response. - */ - struct TALER_DepositConfirmationPS depconf; - - /** - * Value of the /deposit transaction, including fee. - */ - struct TALER_Amount amount_with_fee; - - /** - * Total value of the coin being transacted with. - */ - struct TALER_Amount coin_value; - -}; - - -/** - * Verify that the signature on the "200 OK" response - * from the mint is valid. - * - * @param dh deposit handle - * @param json json reply with the signature - * @return #GNUNET_OK if the signature is valid, #GNUNET_SYSERR if not - */ -static int -verify_deposit_signature_ok (const struct TALER_MINT_DepositHandle *dh, - json_t *json) -{ - struct TALER_MintSignatureP mint_sig; - struct TALER_MintPublicKeyP mint_pub; - const struct TALER_MINT_Keys *key_state; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("sig", &mint_sig), - MAJ_spec_fixed_auto ("pub", &mint_pub), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - key_state = TALER_MINT_get_keys (dh->mint); - if (GNUNET_OK != - TALER_MINT_test_signing_key (key_state, - &mint_pub)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MINT_CONFIRM_DEPOSIT, - &dh->depconf.purpose, - &mint_sig.eddsa_signature, - &mint_pub.eddsa_pub)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Verify that the signatures on the "403 FORBIDDEN" response from the - * mint demonstrating customer double-spending are valid. - * - * @param dh deposit handle - * @param json json reply with the signature(s) and transaction history - * @return #GNUNET_OK if the signature(s) is valid, #GNUNET_SYSERR if not - */ -static int -verify_deposit_signature_forbidden (const struct TALER_MINT_DepositHandle *dh, - json_t *json) -{ - json_t *history; - struct TALER_Amount total; - - history = json_object_get (json, - "history"); - if (GNUNET_OK != - TALER_MINT_verify_coin_history_ (dh->coin_value.currency, - &dh->depconf.coin_pub, - history, - &total)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - TALER_amount_add (&total, - &total, - &dh->amount_with_fee)) - { - /* clearly not OK if our transaction would have caused - the overflow... */ - return GNUNET_OK; - } - - if (0 >= TALER_amount_cmp (&total, - &dh->coin_value)) - { - /* transaction should have still fit */ - GNUNET_break (0); - return GNUNET_SYSERR; - } - /* everything OK, proof of double-spending was provided */ - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /deposit request. - * - * @param cls the `struct TALER_MINT_DepositHandle` - * @param eh the curl request handle - */ -static void -handle_deposit_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_DepositHandle *dh = cls; - long response_code; - json_t *json; - - dh->job = NULL; - json = MAC_download_get_result (&dh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - if (GNUNET_OK != - verify_deposit_signature_ok (dh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_FORBIDDEN: - /* Double spending; check signatures on transaction history */ - if (GNUNET_OK != - verify_deposit_signature_forbidden (dh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - break; - case MHD_HTTP_UNAUTHORIZED: - /* Nothing really to verify, mint says one of the signatures is - invalid; as we checked them, this should never happen, we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, this should never - happen, we should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - dh->cb (dh->cb_cls, - response_code, - json); - json_decref (json); - TALER_MINT_deposit_cancel (dh); -} - - -/** - * Verify signature information about the deposit. - * - * @param dki public key information - * @param amount the amount to be deposited - * @param h_wire hash of the merchant’s account details - * @param h_contract hash of the contact of the merchant with the customer (further details are never disclosed to the mint) - * @param coin_pub coin’s public key - * @param denom_pub denomination key with which the coin is signed - * @param denom_sig mint’s unblinded signature of the coin - * @param timestamp timestamp when the contract was finalized, must match approximately the current time of the mint - * @param transaction_id transaction id for the transaction between merchant and customer - * @param merchant_pub the public key of the merchant (used to identify the merchant for refund requests) - * @param refund_deadline date until which the merchant can issue a refund to the customer via the mint (can be zero if refunds are not allowed) - * @param coin_sig the signature made with purpose #TALER_SIGNATURE_WALLET_COIN_DEPOSIT made by the customer with the coin’s private key. - * @return #GNUNET_OK if signatures are OK, #GNUNET_SYSERR if not - */ -static int -verify_signatures (const struct TALER_MINT_DenomPublicKey *dki, - const struct TALER_Amount *amount, - const struct GNUNET_HashCode *h_wire, - const struct GNUNET_HashCode *h_contract, - const struct TALER_CoinSpendPublicKeyP *coin_pub, - const struct TALER_DenominationSignature *denom_sig, - const struct TALER_DenominationPublicKey *denom_pub, - struct GNUNET_TIME_Absolute timestamp, - uint64_t transaction_id, - const struct TALER_MerchantPublicKeyP *merchant_pub, - struct GNUNET_TIME_Absolute refund_deadline, - const struct TALER_CoinSpendSignatureP *coin_sig) -{ - struct TALER_DepositRequestPS dr; - struct TALER_CoinPublicInfo coin_info; - - dr.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_COIN_DEPOSIT); - dr.purpose.size = htonl (sizeof (struct TALER_DepositRequestPS)); - dr.h_contract = *h_contract; - dr.h_wire = *h_wire; - dr.timestamp = GNUNET_TIME_absolute_hton (timestamp); - dr.refund_deadline = GNUNET_TIME_absolute_hton (refund_deadline); - dr.transaction_id = GNUNET_htonll (transaction_id); - TALER_amount_hton (&dr.amount_with_fee, - amount); - TALER_amount_hton (&dr.deposit_fee, - &dki->fee_deposit); - dr.merchant = *merchant_pub; - dr.coin_pub = *coin_pub; - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_COIN_DEPOSIT, - &dr.purpose, - &coin_sig->eddsa_signature, - &coin_pub->eddsa_pub)) - { - TALER_LOG_WARNING ("Invalid coin signature on /deposit request\n"); - { - char *s; - s = TALER_amount_to_string (amount); - TALER_LOG_DEBUG ("... amount_with_fee was %s\n", s); - GNUNET_free (s); - s = TALER_amount_to_string (&dki->fee_deposit); - TALER_LOG_DEBUG ("... deposit_fee was %s\n", s); - GNUNET_free (s); - } - - return GNUNET_SYSERR; - } - - /* check coin signature */ - coin_info.coin_pub = *coin_pub; - coin_info.denom_pub = *denom_pub; - coin_info.denom_sig = *denom_sig; - if (GNUNET_YES != - TALER_test_coin_valid (&coin_info)) - { - TALER_LOG_WARNING ("Invalid coin passed for /deposit\n"); - return GNUNET_SYSERR; - } - if (0 < TALER_amount_cmp (&dki->fee_deposit, - amount)) - { - TALER_LOG_WARNING ("Deposit amount smaller than fee\n"); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Submit a deposit permission to the mint and get the mint's response. - * Note that while we return the response verbatim to the caller for - * further processing, we do already verify that the response is - * well-formed (i.e. that signatures included in the response are all - * valid). If the mint's reply is not well-formed, we return an - * HTTP status code of zero to @a cb. - * - * We also verify that the @a coin_sig is valid for this deposit - * request, and that the @a ub_sig is a valid signature for @a - * coin_pub. Also, the @a mint must be ready to operate (i.e. have - * finished processing the /keys reply). If either check fails, we do - * NOT initiate the transaction with the mint and instead return NULL. - * - * @param mint the mint handle; the mint must be ready to operate - * @param amount the amount to be deposited - * @param wire_deadline date until which the merchant would like the mint to settle the balance (advisory, the mint cannot be - * forced to settle in the past or upon very short notice, but of course a well-behaved mint will limit aggregation based on the advice received) - * @param wire_details the merchant’s account details, in a format supported by the mint - * @param h_contract hash of the contact of the merchant with the customer (further details are never disclosed to the mint) - * @param coin_pub coin’s public key - * @param denom_pub denomination key with which the coin is signed - * @param denom_sig mint’s unblinded signature of the coin - * @param timestamp timestamp when the contract was finalized, must match approximately the current time of the mint - * @param transaction_id transaction id for the transaction between merchant and customer - * @param merchant_pub the public key of the merchant (used to identify the merchant for refund requests) - * @param refund_deadline date until which the merchant can issue a refund to the customer via the mint (can be zero if refunds are not allowed) - * @param coin_sig the signature made with purpose #TALER_SIGNATURE_WALLET_COIN_DEPOSIT made by the customer with the coin’s private key. - * @param cb the callback to call when a reply for this request is available - * @param cb_cls closure for the above callback - * @return a handle for this request; NULL if the inputs are invalid (i.e. - * signatures fail to verify). In this case, the callback is not called. - */ -struct TALER_MINT_DepositHandle * -TALER_MINT_deposit (struct TALER_MINT_Handle *mint, - const struct TALER_Amount *amount, - struct GNUNET_TIME_Absolute wire_deadline, - json_t *wire_details, - const struct GNUNET_HashCode *h_contract, - const struct TALER_CoinSpendPublicKeyP *coin_pub, - const struct TALER_DenominationSignature *denom_sig, - const struct TALER_DenominationPublicKey *denom_pub, - struct GNUNET_TIME_Absolute timestamp, - uint64_t transaction_id, - const struct TALER_MerchantPublicKeyP *merchant_pub, - struct GNUNET_TIME_Absolute refund_deadline, - const struct TALER_CoinSpendSignatureP *coin_sig, - TALER_MINT_DepositResultCallback cb, - void *cb_cls) -{ - const struct TALER_MINT_Keys *key_state; - const struct TALER_MINT_DenomPublicKey *dki; - struct TALER_MINT_DepositHandle *dh; - struct TALER_MINT_Context *ctx; - json_t *deposit_obj; - CURL *eh; - struct GNUNET_HashCode h_wire; - struct TALER_Amount amount_without_fee; - - (void) TALER_round_abs_time (&wire_deadline); - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - /* initialize h_wire */ - if (GNUNET_OK != - TALER_hash_json (wire_details, - &h_wire)) - { - GNUNET_break (0); - return NULL; - } - key_state = TALER_MINT_get_keys (mint); - dki = TALER_MINT_get_denomination_key (key_state, - denom_pub); - if (NULL == dki) - { - TALER_LOG_WARNING ("Denomination key unknown to mint\n"); - return NULL; - } - if (GNUNET_SYSERR == - TALER_amount_subtract (&amount_without_fee, - amount, - &dki->fee_deposit)) - { - GNUNET_break (0); - return NULL; - } - - if (GNUNET_OK != - verify_signatures (dki, - amount, - &h_wire, - h_contract, - coin_pub, - denom_sig, - denom_pub, - timestamp, - transaction_id, - merchant_pub, - refund_deadline, - coin_sig)) - { - GNUNET_break_op (0); - return NULL; - } - - deposit_obj = json_pack ("{s:o, s:O," /* f/wire */ - " s:o, s:o," /* H_wire, H_contract */ - " s:o, s:o," /* coin_pub, denom_pub */ - " s:o, s:o," /* ub_sig, timestamp */ - " s:I, s:o," /* transaction id, merchant_pub */ - " s:o, s:o," /* refund_deadline, wire_deadline */ - " s:o}", /* coin_sig */ - "f", TALER_json_from_amount (amount), - "wire", wire_details, - "H_wire", TALER_json_from_data (&h_wire, - sizeof (h_wire)), - "H_contract", TALER_json_from_data (h_contract, - sizeof (struct GNUNET_HashCode)), - "coin_pub", TALER_json_from_data (coin_pub, - sizeof (*coin_pub)), - "denom_pub", TALER_json_from_rsa_public_key (denom_pub->rsa_public_key), - "ub_sig", TALER_json_from_rsa_signature (denom_sig->rsa_signature), - "timestamp", TALER_json_from_abs (timestamp), - "transaction_id", (json_int_t) transaction_id, - "merchant_pub", TALER_json_from_data (merchant_pub, - sizeof (*merchant_pub)), - "refund_deadline", TALER_json_from_abs (refund_deadline), - "edate", TALER_json_from_abs (wire_deadline), - "coin_sig", TALER_json_from_data (coin_sig, - sizeof (*coin_sig)) - ); - - dh = GNUNET_new (struct TALER_MINT_DepositHandle); - dh->mint = mint; - dh->cb = cb; - dh->cb_cls = cb_cls; - dh->url = MAH_path_to_url (mint, "/deposit"); - dh->depconf.purpose.size = htonl (sizeof (struct TALER_DepositConfirmationPS)); - dh->depconf.purpose.purpose = htonl (TALER_SIGNATURE_MINT_CONFIRM_DEPOSIT); - dh->depconf.h_contract = *h_contract; - dh->depconf.h_wire = h_wire; - dh->depconf.transaction_id = GNUNET_htonll (transaction_id); - dh->depconf.timestamp = GNUNET_TIME_absolute_hton (timestamp); - dh->depconf.refund_deadline = GNUNET_TIME_absolute_hton (refund_deadline); - TALER_amount_hton (&dh->depconf.amount_without_fee, - &amount_without_fee); - dh->depconf.coin_pub = *coin_pub; - dh->depconf.merchant = *merchant_pub; - dh->amount_with_fee = *amount; - dh->coin_value = dki->value; - - eh = curl_easy_init (); - GNUNET_assert (NULL != (dh->json_enc = - json_dumps (deposit_obj, - JSON_COMPACT))); - json_decref (deposit_obj); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "URL for deposit: `%s'\n", - dh->url); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - dh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDS, - dh->json_enc)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDSIZE, - strlen (dh->json_enc))); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &dh->db)); - ctx = MAH_handle_to_context (mint); - dh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_deposit_finished, - dh); - return dh; -} - - -/** - * Cancel a deposit permission request. This function cannot be used - * on a request handle if a response is already served for it. - * - * @param deposit the deposit permission request handle - */ -void -TALER_MINT_deposit_cancel (struct TALER_MINT_DepositHandle *deposit) -{ - if (NULL != deposit->job) - { - MAC_job_cancel (deposit->job); - deposit->job = NULL; - } - GNUNET_free_non_null (deposit->db.buf); - GNUNET_free (deposit->url); - GNUNET_free (deposit->json_enc); - GNUNET_free (deposit); -} - - -/* end of mint_api_deposit.c */ diff --git a/src/mint-lib/mint_api_deposit_wtid.c b/src/mint-lib/mint_api_deposit_wtid.c deleted file mode 100644 index d29f406e..00000000 --- a/src/mint-lib/mint_api_deposit_wtid.c +++ /dev/null @@ -1,379 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015, 2016 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_deposit_wtid.c - * @brief Implementation of the /deposit/wtid request of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_common.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * @brief A Deposit Wtid Handle - */ -struct TALER_MINT_DepositWtidHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * JSON encoding of the request to POST. - */ - char *json_enc; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_DepositWtidCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Information the mint should sign in response. - * (with pre-filled fields from the request). - */ - struct TALER_ConfirmWirePS depconf; - -}; - - -/** - * Verify that the signature on the "200 OK" response - * from the mint is valid. - * - * @param dwh deposit wtid handle - * @param json json reply with the signature - * @return #GNUNET_OK if the signature is valid, #GNUNET_SYSERR if not - */ -static int -verify_deposit_wtid_signature_ok (const struct TALER_MINT_DepositWtidHandle *dwh, - json_t *json) -{ - struct TALER_MintSignatureP mint_sig; - struct TALER_MintPublicKeyP mint_pub; - const struct TALER_MINT_Keys *key_state; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("mint_sig", &mint_sig), - MAJ_spec_fixed_auto ("mint_pub", &mint_pub), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - key_state = TALER_MINT_get_keys (dwh->mint); - if (GNUNET_OK != - TALER_MINT_test_signing_key (key_state, - &mint_pub)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MINT_CONFIRM_WIRE, - &dwh->depconf.purpose, - &mint_sig.eddsa_signature, - &mint_pub.eddsa_pub)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /deposit/wtid request. - * - * @param cls the `struct TALER_MINT_DepositWtidHandle` - * @param eh the curl request handle - */ -static void -handle_deposit_wtid_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_DepositWtidHandle *dwh = cls; - long response_code; - json_t *json; - const struct TALER_WireTransferIdentifierRawP *wtid = NULL; - struct GNUNET_TIME_Absolute execution_time = GNUNET_TIME_UNIT_FOREVER_ABS; - const struct TALER_Amount *coin_contribution = NULL; - struct TALER_Amount coin_contribution_s; - - dwh->job = NULL; - json = MAC_download_get_result (&dwh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - { - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("wtid", &dwh->depconf.wtid), - MAJ_spec_absolute_time ("execution_time", &execution_time), - MAJ_spec_amount ("coin_contribution", &coin_contribution_s), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - wtid = &dwh->depconf.wtid; - dwh->depconf.execution_time = GNUNET_TIME_absolute_hton (execution_time); - TALER_amount_hton (&dwh->depconf.coin_contribution, - &coin_contribution_s); - coin_contribution = &coin_contribution_s; - if (GNUNET_OK != - verify_deposit_wtid_signature_ok (dwh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - } - break; - case MHD_HTTP_ACCEPTED: - { - /* Transaction known, but not executed yet */ - struct MAJ_Specification spec[] = { - MAJ_spec_absolute_time ("execution_time", &execution_time), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_UNAUTHORIZED: - /* Nothing really to verify, mint says one of the signatures is - invalid; as we checked them, this should never happen, we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Mint does not know about transaction; - we should pass the reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - dwh->cb (dwh->cb_cls, - response_code, - json, - wtid, - execution_time, - coin_contribution); - json_decref (json); - TALER_MINT_deposit_wtid_cancel (dwh); -} - - -/** - * Obtain wire transfer details about an existing deposit operation. - * - * @param mint the mint to query - * @param merchant_priv the merchant's private key - * @param h_wire hash of merchant's wire transfer details - * @param h_contract hash of the contract - * @param coin_pub public key of the coin - * @param transaction_id transaction identifier - * @param cb function to call with the result - * @param cb_cls closure for @a cb - * @return handle to abort request - */ -struct TALER_MINT_DepositWtidHandle * -TALER_MINT_deposit_wtid (struct TALER_MINT_Handle *mint, - const struct TALER_MerchantPrivateKeyP *merchant_priv, - const struct GNUNET_HashCode *h_wire, - const struct GNUNET_HashCode *h_contract, - const struct TALER_CoinSpendPublicKeyP *coin_pub, - uint64_t transaction_id, - TALER_MINT_DepositWtidCallback cb, - void *cb_cls) -{ - struct TALER_DepositTrackPS dtp; - struct TALER_MerchantSignatureP merchant_sig; - struct TALER_MINT_DepositWtidHandle *dwh; - struct TALER_MINT_Context *ctx; - json_t *deposit_wtid_obj; - CURL *eh; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - dtp.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_DEPOSIT_WTID); - dtp.purpose.size = htonl (sizeof (dtp)); - dtp.h_contract = *h_contract; - dtp.h_wire = *h_wire; - dtp.transaction_id = GNUNET_htonll (transaction_id); - GNUNET_CRYPTO_eddsa_key_get_public (&merchant_priv->eddsa_priv, - &dtp.merchant.eddsa_pub); - - dtp.coin_pub = *coin_pub; - GNUNET_assert (GNUNET_OK == - GNUNET_CRYPTO_eddsa_sign (&merchant_priv->eddsa_priv, - &dtp.purpose, - &merchant_sig.eddsa_sig)); - deposit_wtid_obj = json_pack ("{s:o, s:o," /* H_wire, H_contract */ - " s:o, s:I," /* coin_pub, transaction_id */ - " s:o, s:o}", /* merchant_pub, merchant_sig */ - "H_wire", TALER_json_from_data (h_wire, - sizeof (struct GNUNET_HashCode)), - "H_contract", TALER_json_from_data (h_contract, - sizeof (struct GNUNET_HashCode)), - "coin_pub", TALER_json_from_data (coin_pub, - sizeof (*coin_pub)), - "transaction_id", (json_int_t) transaction_id, - "merchant_pub", TALER_json_from_data (&dtp.merchant, - sizeof (struct TALER_MerchantPublicKeyP)), - "merchant_sig", TALER_json_from_data (&merchant_sig, - sizeof (merchant_sig))); - - dwh = GNUNET_new (struct TALER_MINT_DepositWtidHandle); - dwh->mint = mint; - dwh->cb = cb; - dwh->cb_cls = cb_cls; - dwh->url = MAH_path_to_url (mint, "/deposit/wtid"); - dwh->depconf.purpose.size = htonl (sizeof (struct TALER_DepositConfirmationPS)); - dwh->depconf.purpose.purpose = htonl (TALER_SIGNATURE_MINT_CONFIRM_WIRE); - dwh->depconf.h_wire = *h_wire; - dwh->depconf.h_contract = *h_contract; - dwh->depconf.coin_pub = *coin_pub; - dwh->depconf.transaction_id = GNUNET_htonll (transaction_id); - - eh = curl_easy_init (); - GNUNET_assert (NULL != (dwh->json_enc = - json_dumps (deposit_wtid_obj, - JSON_COMPACT))); - json_decref (deposit_wtid_obj); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - dwh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDS, - dwh->json_enc)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDSIZE, - strlen (dwh->json_enc))); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &dwh->db)); - ctx = MAH_handle_to_context (mint); - dwh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_deposit_wtid_finished, - dwh); - return dwh; -} - - -/** - * Cancel deposit wtid request. This function cannot be used on a request - * handle if a response is already served for it. - * - * @param dwh the wire deposits request handle - */ -void -TALER_MINT_deposit_wtid_cancel (struct TALER_MINT_DepositWtidHandle *dwh) -{ - if (NULL != dwh->job) - { - MAC_job_cancel (dwh->job); - dwh->job = NULL; - } - GNUNET_free_non_null (dwh->db.buf); - GNUNET_free (dwh->url); - GNUNET_free (dwh->json_enc); - GNUNET_free (dwh); -} - - -/* end of mint_api_deposit_wtid.c */ diff --git a/src/mint-lib/mint_api_handle.c b/src/mint-lib/mint_api_handle.c deleted file mode 100644 index ef26cd83..00000000 --- a/src/mint-lib/mint_api_handle.c +++ /dev/null @@ -1,902 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_handle.c - * @brief Implementation of the "handle" component of the mint's HTTP API - * @author Sree Harsha Totakura <sreeharsha@totakura.in> - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <gnunet/gnunet_util_lib.h> -#include <microhttpd.h> -#include "taler_mint_service.h" -#include "taler_signatures.h" -#include "mint_api_context.h" -#include "mint_api_json.h" -#include "mint_api_handle.h" - - -/** - * Log error related to CURL operations. - * - * @param type log level - * @param function which function failed to run - * @param code what was the curl error code - */ -#define CURL_STRERROR(type, function, code) \ - GNUNET_log (type, "Curl function `%s' has failed at `%s:%d' with error: %s", \ - function, __FILE__, __LINE__, curl_easy_strerror (code)); - - -/** - * Stages of initialization for the `struct TALER_MINT_Handle` - */ -enum MintHandleState -{ - /** - * Just allocated. - */ - MHS_INIT = 0, - - /** - * Obtained the mint's certification data and keys. - */ - MHS_CERT = 1, - - /** - * Failed to initialize (fatal). - */ - MHS_FAILED = 2 -}; - - -/** - * Data for the request to get the /keys of a mint. - */ -struct KeysRequest; - - -/** - * Handle to the mint - */ -struct TALER_MINT_Handle -{ - /** - * The context of this handle - */ - struct TALER_MINT_Context *ctx; - - /** - * The URL of the mint (i.e. "http://mint.taler.net/") - */ - char *url; - - /** - * Function to call with the mint's certification data, - * NULL if this has already been done. - */ - TALER_MINT_CertificationCallback cert_cb; - - /** - * Closure to pass to @e cert_cb. - */ - void *cert_cb_cls; - - /** - * Data for the request to get the /keys of a mint, - * NULL once we are past stage #MHS_INIT. - */ - struct KeysRequest *kr; - - /** - * Key data of the mint, only valid if - * @e handshake_complete is past stage #MHS_CERT. - */ - struct TALER_MINT_Keys key_data; - - /** - * Stage of the mint's initialization routines. - */ - enum MintHandleState state; - -}; - - -/* ***************** Internal /keys fetching ************* */ - -/** - * Data for the request to get the /keys of a mint. - */ -struct KeysRequest -{ - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this handle - */ - char *url; - - /** - * Entry for this request with the `struct TALER_MINT_Context`. - */ - struct MAC_Job *job; - - /** - * Data structure for the download. - */ - struct MAC_DownloadBuffer db; - -}; - - -/** - * Release memory occupied by a keys request. - * Note that this does not cancel the request - * itself. - * - * @param kr request to free - */ -static void -free_keys_request (struct KeysRequest *kr) -{ - GNUNET_free_non_null (kr->db.buf); - GNUNET_free (kr->url); - GNUNET_free (kr); -} - - -#define EXITIF(cond) \ - do { \ - if (cond) { GNUNET_break (0); goto EXITIF_exit; } \ - } while (0) - - -/** - * Parse a mint's signing key encoded in JSON. - * - * @param[out] sign_key where to return the result - * @param[in] sign_key_obj json to parse - * @param master_key master key to use to verify signature - * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is - * invalid or the json malformed. - */ -static int -parse_json_signkey (struct TALER_MINT_SigningPublicKey *sign_key, - json_t *sign_key_obj, - const struct TALER_MasterPublicKeyP *master_key) -{ - struct TALER_MintSigningKeyValidityPS sign_key_issue; - struct GNUNET_CRYPTO_EddsaSignature sig; - struct GNUNET_TIME_Absolute valid_from; - struct GNUNET_TIME_Absolute valid_until; - struct GNUNET_TIME_Absolute valid_legal; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("master_sig", - &sig), - MAJ_spec_fixed_auto ("key", - &sign_key_issue.signkey_pub), - MAJ_spec_absolute_time ("stamp_start", - &valid_from), - MAJ_spec_absolute_time ("stamp_expire", - &valid_until), - MAJ_spec_absolute_time ("stamp_end", - &valid_legal), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (sign_key_obj, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - sign_key_issue.purpose.purpose = htonl (TALER_SIGNATURE_MASTER_SIGNING_KEY_VALIDITY); - sign_key_issue.purpose.size = - htonl (sizeof (struct TALER_MintSigningKeyValidityPS) - - offsetof (struct TALER_MintSigningKeyValidityPS, - purpose)); - sign_key_issue.master_public_key = *master_key; - sign_key_issue.start = GNUNET_TIME_absolute_hton (valid_from); - sign_key_issue.expire = GNUNET_TIME_absolute_hton (valid_until); - sign_key_issue.end = GNUNET_TIME_absolute_hton (valid_legal); - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MASTER_SIGNING_KEY_VALIDITY, - &sign_key_issue.purpose, - &sig, - &master_key->eddsa_pub)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - sign_key->valid_from = valid_from; - sign_key->valid_until = valid_until; - sign_key->key = sign_key_issue.signkey_pub; - return GNUNET_OK; -} - - -/** - * Parse a mint's denomination key encoded in JSON. - * - * @param[out] denom_key where to return the result - * @param[in] denom_key_obj json to parse - * @param master_key master key to use to verify signature - * @param hash_context where to accumulate data for signature verification - * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is - * invalid or the json malformed. - */ -static int -parse_json_denomkey (struct TALER_MINT_DenomPublicKey *denom_key, - json_t *denom_key_obj, - struct TALER_MasterPublicKeyP *master_key, - struct GNUNET_HashContext *hash_context) -{ - struct GNUNET_TIME_Absolute valid_from; - struct GNUNET_TIME_Absolute withdraw_valid_until; - struct GNUNET_TIME_Absolute deposit_valid_until; - struct GNUNET_TIME_Absolute expire_legal; - struct TALER_Amount value; - struct TALER_Amount fee_withdraw; - struct TALER_Amount fee_deposit; - struct TALER_Amount fee_refresh; - struct TALER_DenominationKeyValidityPS denom_key_issue; - struct GNUNET_CRYPTO_rsa_PublicKey *pk; - struct GNUNET_CRYPTO_EddsaSignature sig; - - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("master_sig", - &sig), - MAJ_spec_absolute_time ("stamp_expire_deposit", - &deposit_valid_until), - MAJ_spec_absolute_time ("stamp_expire_withdraw", - &withdraw_valid_until), - MAJ_spec_absolute_time ("stamp_start", - &valid_from), - MAJ_spec_absolute_time ("stamp_expire_legal", - &expire_legal), - MAJ_spec_amount ("value", - &value), - MAJ_spec_amount ("fee_withdraw", - &fee_withdraw), - MAJ_spec_amount ("fee_deposit", - &fee_deposit), - MAJ_spec_amount ("fee_refresh", - &fee_refresh), - MAJ_spec_rsa_public_key ("denom_pub", - &pk), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (denom_key_obj, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - memset (&denom_key_issue, 0, sizeof (denom_key_issue)); - GNUNET_CRYPTO_rsa_public_key_hash (pk, - &denom_key_issue.denom_hash); - denom_key_issue.purpose.purpose - = htonl (TALER_SIGNATURE_MASTER_DENOMINATION_KEY_VALIDITY); - denom_key_issue.purpose.size - = htonl (sizeof (struct TALER_DenominationKeyValidityPS)); - denom_key_issue.master = *master_key; - denom_key_issue.start = GNUNET_TIME_absolute_hton (valid_from); - denom_key_issue.expire_withdraw = GNUNET_TIME_absolute_hton (withdraw_valid_until); - denom_key_issue.expire_spend = GNUNET_TIME_absolute_hton (deposit_valid_until); - denom_key_issue.expire_legal = GNUNET_TIME_absolute_hton (expire_legal); - TALER_amount_hton (&denom_key_issue.value, - &value); - TALER_amount_hton (&denom_key_issue.fee_withdraw, - &fee_withdraw); - TALER_amount_hton (&denom_key_issue.fee_deposit, - &fee_deposit); - TALER_amount_hton (&denom_key_issue.fee_refresh, - &fee_refresh); - EXITIF (GNUNET_SYSERR == - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MASTER_DENOMINATION_KEY_VALIDITY, - &denom_key_issue.purpose, - &sig, - &master_key->eddsa_pub)); - GNUNET_CRYPTO_hash_context_read (hash_context, - &denom_key_issue.denom_hash, - sizeof (struct GNUNET_HashCode)); - denom_key->key.rsa_public_key = pk; - denom_key->h_key = denom_key_issue.denom_hash; - denom_key->valid_from = valid_from; - denom_key->withdraw_valid_until = withdraw_valid_until; - denom_key->deposit_valid_until = deposit_valid_until; - denom_key->expire_legal = expire_legal; - denom_key->value = value; - denom_key->fee_withdraw = fee_withdraw; - denom_key->fee_deposit = fee_deposit; - denom_key->fee_refresh = fee_refresh; - return GNUNET_OK; - - EXITIF_exit: - MAJ_parse_free (spec); - return GNUNET_SYSERR; -} - - -/** - * Parse a mint's auditor information encoded in JSON. - * - * @param[out] auditor where to return the result - * @param[in] auditor_obj json to parse - * @param key_data information about denomination keys - * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is - * invalid or the json malformed. - */ -static int -parse_json_auditor (struct TALER_MINT_AuditorInformation *auditor, - json_t *auditor_obj, - const struct TALER_MINT_Keys *key_data) -{ - json_t *keys; - json_t *key; - unsigned int len; - unsigned int off; - unsigned int i; - struct TALER_MintKeyValidityPS kv; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("auditor_pub", - &auditor->auditor_pub), - MAJ_spec_json ("denomination_keys", - &keys), - MAJ_spec_end - }; - - auditor->auditor_url = NULL; /* #3987 */ - if (GNUNET_OK != - MAJ_parse_json (auditor_obj, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - kv.purpose.purpose = htonl (TALER_SIGNATURE_AUDITOR_MINT_KEYS); - kv.purpose.size = htonl (sizeof (struct TALER_MintKeyValidityPS)); - kv.master = key_data->master_pub; - len = json_array_size (keys); - auditor->denom_keys = GNUNET_new_array (len, - const struct TALER_MINT_DenomPublicKey *); - i = 0; - off = 0; - json_array_foreach (keys, i, key) { - struct TALER_AuditorSignatureP auditor_sig; - struct GNUNET_HashCode denom_h; - const struct TALER_MINT_DenomPublicKey *dk; - unsigned int j; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("denom_pub_h", - &denom_h), - MAJ_spec_fixed_auto ("auditor_sig", - &auditor_sig), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (key, - spec)) - { - GNUNET_break_op (0); - continue; - } - dk = NULL; - for (j=0;j<key_data->num_denom_keys;j++) - { - if (0 == memcmp (&denom_h, - &key_data->denom_keys[j].h_key, - sizeof (struct GNUNET_HashCode))) - { - dk = &key_data->denom_keys[j]; - break; - } - } - if (NULL == dk) - { - GNUNET_break_op (0); - continue; - } - kv.start = GNUNET_TIME_absolute_hton (dk->valid_from); - kv.expire_withdraw = GNUNET_TIME_absolute_hton (dk->withdraw_valid_until); - kv.expire_spend = GNUNET_TIME_absolute_hton (dk->deposit_valid_until); - kv.expire_legal = GNUNET_TIME_absolute_hton (dk->expire_legal); - TALER_amount_hton (&kv.value, - &dk->value); - TALER_amount_hton (&kv.fee_withdraw, - &dk->fee_withdraw); - TALER_amount_hton (&kv.fee_deposit, - &dk->fee_deposit); - TALER_amount_hton (&kv.fee_refresh, - &dk->fee_refresh); - kv.denom_hash = dk->h_key; - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_AUDITOR_MINT_KEYS, - &kv.purpose, - &auditor_sig.eddsa_sig, - &auditor->auditor_pub.eddsa_pub)) - { - GNUNET_break_op (0); - continue; - } - auditor->denom_keys[off] = dk; - off++; - } - auditor->num_denom_keys = off; - return GNUNET_OK; -} - - -/** - * Decode the JSON in @a resp_obj from the /keys response and store the data - * in the @a key_data. - * - * @param[in] resp_obj JSON object to parse - * @param[out] key_data where to store the results we decoded - * @return #GNUNET_OK on success, #GNUNET_SYSERR on error (malformed JSON) - */ -static int -decode_keys_json (json_t *resp_obj, - struct TALER_MINT_Keys *key_data) -{ - struct GNUNET_TIME_Absolute list_issue_date; - struct TALER_MintSignatureP sig; - struct TALER_MintKeySetPS ks; - struct GNUNET_HashContext *hash_context; - struct TALER_MintPublicKeyP pub; - - if (JSON_OBJECT != json_typeof (resp_obj)) - return GNUNET_SYSERR; - - hash_context = GNUNET_CRYPTO_hash_context_start (); - /* parse the master public key and issue date of the response */ - { - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("master_public_key", - &key_data->master_pub), - MAJ_spec_fixed_auto ("eddsa_sig", - &sig), - MAJ_spec_fixed_auto ("eddsa_pub", - &pub), - MAJ_spec_absolute_time ("list_issue_date", - &list_issue_date), - MAJ_spec_end - }; - - EXITIF (GNUNET_OK != - MAJ_parse_json (resp_obj, - spec)); - } - - /* parse the signing keys */ - { - json_t *sign_keys_array; - json_t *sign_key_obj; - unsigned int index; - - EXITIF (NULL == (sign_keys_array = - json_object_get (resp_obj, - "signkeys"))); - EXITIF (JSON_ARRAY != json_typeof (sign_keys_array)); - EXITIF (0 == (key_data->num_sign_keys = - json_array_size (sign_keys_array))); - key_data->sign_keys - = GNUNET_new_array (key_data->num_sign_keys, - struct TALER_MINT_SigningPublicKey); - index = 0; - json_array_foreach (sign_keys_array, index, sign_key_obj) { - EXITIF (GNUNET_SYSERR == - parse_json_signkey (&key_data->sign_keys[index], - sign_key_obj, - &key_data->master_pub)); - } - } - - /* parse the denomination keys */ - { - json_t *denom_keys_array; - json_t *denom_key_obj; - unsigned int index; - - EXITIF (NULL == (denom_keys_array = - json_object_get (resp_obj, "denoms"))); - EXITIF (JSON_ARRAY != json_typeof (denom_keys_array)); - EXITIF (0 == (key_data->num_denom_keys = json_array_size (denom_keys_array))); - key_data->denom_keys = GNUNET_new_array (key_data->num_denom_keys, - struct TALER_MINT_DenomPublicKey); - index = 0; - json_array_foreach (denom_keys_array, index, denom_key_obj) { - EXITIF (GNUNET_SYSERR == - parse_json_denomkey (&key_data->denom_keys[index], - denom_key_obj, - &key_data->master_pub, - hash_context)); - } - } - - /* parse the auditor information */ - { - json_t *auditors_array; - json_t *auditor_info; - unsigned int len; - unsigned int index; - - EXITIF (NULL == (auditors_array = - json_object_get (resp_obj, "auditors"))); - EXITIF (JSON_ARRAY != json_typeof (auditors_array)); - len = json_array_size (auditors_array); - if (0 != len) - { - key_data->auditors = GNUNET_new_array (len, - struct TALER_MINT_AuditorInformation); - index = 0; - json_array_foreach (auditors_array, index, auditor_info) { - EXITIF (GNUNET_SYSERR == - parse_json_auditor (&key_data->auditors[index], - auditor_info, - key_data)); - } - } - } - - /* Validate signature... */ - ks.purpose.size = htonl (sizeof (ks)); - ks.purpose.purpose = htonl (TALER_SIGNATURE_MINT_KEY_SET); - ks.list_issue_date = GNUNET_TIME_absolute_hton (list_issue_date); - GNUNET_CRYPTO_hash_context_finish (hash_context, - &ks.hc); - hash_context = NULL; - EXITIF (GNUNET_OK != - TALER_MINT_test_signing_key (key_data, - &pub)); - EXITIF (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MINT_KEY_SET, - &ks.purpose, - &sig.eddsa_signature, - &pub.eddsa_pub)); - return GNUNET_OK; - EXITIF_exit: - - if (NULL != hash_context) - GNUNET_CRYPTO_hash_context_abort (hash_context); - return GNUNET_SYSERR; -} - - -/** - * Callback used when downloading the reply to a /keys request - * is complete. - * - * @param cls the `struct KeysRequest` - * @param eh easy handle of the original request - */ -static void -keys_completed_cb (void *cls, - CURL *eh) -{ - struct KeysRequest *kr = cls; - struct TALER_MINT_Handle *mint = kr->mint; - json_t *resp_obj; - long response_code; - TALER_MINT_CertificationCallback cb; - - resp_obj = MAC_download_get_result (&kr->db, - eh, - &response_code); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "Received keys from URL `%s' with status %ld.\n", - kr->url, - response_code); - switch (response_code) { - case 0: - break; - case MHD_HTTP_OK: - if ( (NULL == resp_obj) || - (GNUNET_OK != - decode_keys_json (resp_obj, - &kr->mint->key_data)) ) - response_code = 0; - break; - default: - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - break; - } - if (NULL != resp_obj) - json_decref (resp_obj); - - if (MHD_HTTP_OK != response_code) - { - mint->kr = NULL; - free_keys_request (kr); - mint->state = MHS_FAILED; - /* notify application that we failed */ - if (NULL != (cb = mint->cert_cb)) - { - mint->cert_cb = NULL; - cb (mint->cert_cb_cls, - NULL); - } - return; - } - mint->kr = NULL; - free_keys_request (kr); - mint->state = MHS_CERT; - /* notify application about the key information */ - if (NULL != (cb = mint->cert_cb)) - { - mint->cert_cb = NULL; - cb (mint->cert_cb_cls, - &mint->key_data); - } -} - - -/* ********************* library internal API ********* */ - - -/** - * Get the context of a mint. - * - * @param h the mint handle to query - * @return ctx context to execute jobs in - */ -struct TALER_MINT_Context * -MAH_handle_to_context (struct TALER_MINT_Handle *h) -{ - return h->ctx; -} - - -/** - * Check if the handle is ready to process requests. - * - * @param h the mint handle to query - * @return #GNUNET_YES if we are ready, #GNUNET_NO if not - */ -int -MAH_handle_is_ready (struct TALER_MINT_Handle *h) -{ - return (MHS_CERT == h->state) ? GNUNET_YES : GNUNET_NO; -} - - -/** - * Obtain the URL to use for an API request. - * - * @param h the mint handle to query - * @param path Taler API path (i.e. "/reserve/withdraw") - * @return the full URI to use with cURL - */ -char * -MAH_path_to_url (struct TALER_MINT_Handle *h, - const char *path) -{ - char *url; - - if ( ('/' == path[0]) && - (0 < strlen (h->url)) && - ('/' == h->url[strlen (h->url) - 1]) ) - path++; /* avoid generating URL with "//" from concat */ - GNUNET_asprintf (&url, - "%s%s", - h->url, - path); - return url; -} - - -/* ********************* public API ******************* */ - -/** - * Initialise a connection to the mint. Will connect to the - * mint and obtain information about the mint's master public - * key and the mint's auditor. The respective information will - * be passed to the @a cert_cb once available, and all future - * interactions with the mint will be checked to be signed - * (where appropriate) by the respective master key. - * - * @param ctx the context - * @param url HTTP base URL for the mint - * @param cert_cb function to call with the mint's certification information - * @param cert_cb_cls closure for @a cert_cb - * @param ... list of additional arguments, terminated by #TALER_MINT_OPTION_END. - * @return the mint handle; NULL upon error - */ -struct TALER_MINT_Handle * -TALER_MINT_connect (struct TALER_MINT_Context *ctx, - const char *url, - TALER_MINT_CertificationCallback cert_cb, - void *cert_cb_cls, - ...) -{ - struct TALER_MINT_Handle *mint; - struct KeysRequest *kr; - CURL *c; - - mint = GNUNET_new (struct TALER_MINT_Handle); - mint->ctx = ctx; - mint->url = GNUNET_strdup (url); - mint->cert_cb = cert_cb; - mint->cert_cb_cls = cert_cb_cls; - kr = GNUNET_new (struct KeysRequest); - kr->mint = mint; - kr->url = MAH_path_to_url (mint, "/keys"); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "Requesting keys with URL `%s'.\n", - kr->url); - c = curl_easy_init (); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (c, - CURLOPT_VERBOSE, - 0)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (c, - CURLOPT_STDERR, - stdout)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (c, - CURLOPT_URL, - kr->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (c, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (c, - CURLOPT_WRITEDATA, - &kr->db)); - kr->job = MAC_job_add (mint->ctx, - c, - GNUNET_NO, - &keys_completed_cb, - kr); - mint->kr = kr; - return mint; -} - - -/** - * Disconnect from the mint - * - * @param mint the mint handle - */ -void -TALER_MINT_disconnect (struct TALER_MINT_Handle *mint) -{ - unsigned int i; - - if (NULL != mint->kr) - { - MAC_job_cancel (mint->kr->job); - free_keys_request (mint->kr); - mint->kr = NULL; - } - GNUNET_array_grow (mint->key_data.sign_keys, - mint->key_data.num_sign_keys, - 0); - for (i=0;i<mint->key_data.num_denom_keys;i++) - GNUNET_CRYPTO_rsa_public_key_free (mint->key_data.denom_keys[i].key.rsa_public_key); - GNUNET_array_grow (mint->key_data.denom_keys, - mint->key_data.num_denom_keys, - 0); - GNUNET_array_grow (mint->key_data.auditors, - mint->key_data.num_auditors, - 0); - GNUNET_free (mint->url); - GNUNET_free (mint); -} - - -/** - * Test if the given @a pub is a the current signing key from the mint - * according to @a keys. - * - * @param keys the mint's key set - * @param pub claimed current online signing key for the mint - * @return #GNUNET_OK if @a pub is (according to /keys) a current signing key - */ -int -TALER_MINT_test_signing_key (const struct TALER_MINT_Keys *keys, - const struct TALER_MintPublicKeyP *pub) -{ - struct GNUNET_TIME_Absolute now; - unsigned int i; - - /* we will check using a tolerance of 1h for the time */ - now = GNUNET_TIME_absolute_get (); - for (i=0;i<keys->num_sign_keys;i++) - if ( (keys->sign_keys[i].valid_from.abs_value_us <= now.abs_value_us + 60 * 60 * 1000LL * 1000LL) && - (keys->sign_keys[i].valid_until.abs_value_us > now.abs_value_us - 60 * 60 * 1000LL * 1000LL) && - (0 == memcmp (pub, - &keys->sign_keys[i].key, - sizeof (struct TALER_MintPublicKeyP))) ) - return GNUNET_OK; - return GNUNET_SYSERR; -} - - -/** - * Obtain the denomination key details from the mint. - * - * @param keys the mint's key set - * @param pk public key of the denomination to lookup - * @return details about the given denomination key, NULL if the key is - * not found - */ -const struct TALER_MINT_DenomPublicKey * -TALER_MINT_get_denomination_key (const struct TALER_MINT_Keys *keys, - const struct TALER_DenominationPublicKey *pk) -{ - unsigned int i; - - for (i=0;i<keys->num_denom_keys;i++) - if (0 == GNUNET_CRYPTO_rsa_public_key_cmp (pk->rsa_public_key, - keys->denom_keys[i].key.rsa_public_key)) - return &keys->denom_keys[i]; - return NULL; -} - - -/** - * Obtain the denomination key details from the mint. - * - * @param keys the mint's key set - * @param hc hash of the public key of the denomination to lookup - * @return details about the given denomination key - */ -const struct TALER_MINT_DenomPublicKey * -TALER_MINT_get_denomination_key_by_hash (const struct TALER_MINT_Keys *keys, - const struct GNUNET_HashCode *hc) -{ - unsigned int i; - - for (i=0;i<keys->num_denom_keys;i++) - if (0 == memcmp (hc, - &keys->denom_keys[i].h_key, - sizeof (struct GNUNET_HashCode))) - return &keys->denom_keys[i]; - return NULL; -} - - -/** - * Obtain the keys from the mint. - * - * @param mint the mint handle - * @return the mint's key set - */ -const struct TALER_MINT_Keys * -TALER_MINT_get_keys (const struct TALER_MINT_Handle *mint) -{ - return &mint->key_data; -} - - -/* end of mint_api_handle.c */ diff --git a/src/mint-lib/mint_api_handle.h b/src/mint-lib/mint_api_handle.h deleted file mode 100644 index 0dae58db..00000000 --- a/src/mint-lib/mint_api_handle.h +++ /dev/null @@ -1,59 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_handle.h - * @brief Internal interface to the handle part of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include "taler_mint_service.h" - - -/** - * Get the context of a mint. - * - * @param h the mint handle to query - * @return ctx context to execute jobs in - */ -struct TALER_MINT_Context * -MAH_handle_to_context (struct TALER_MINT_Handle *h); - - -/** - * Check if the handle is ready to process requests. - * - * @param h the mint handle to query - * @return #GNUNET_YES if we are ready, #GNUNET_NO if not - */ -int -MAH_handle_is_ready (struct TALER_MINT_Handle *h); - - -/** - * Obtain the URL to use for an API request. - * - * @param h the mint handle to query - * @param path Taler API path (i.e. "/reserve/withdraw") - * @return the full URI to use with cURL - */ -char * -MAH_path_to_url (struct TALER_MINT_Handle *h, - const char *path); - - -/* end of mint_api_handle.h */ diff --git a/src/mint-lib/mint_api_json.c b/src/mint-lib/mint_api_json.c deleted file mode 100644 index 7de33e5e..00000000 --- a/src/mint-lib/mint_api_json.c +++ /dev/null @@ -1,525 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU Affero General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. - - You should have received a copy of the GNU Affero General Public License along with - TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_json.c - * @brief functions to parse incoming requests (JSON snippets) - * @author Florian Dold - * @author Benedikt Mueller - * @author Christian Grothoff - */ -#include "platform.h" -#include "mint_api_json.h" - -/** - * Navigate and parse data in a JSON tree. - * - * @param root the JSON node to start the navigation at. - * @param spec parse specification array - * @return offset in @a spec where parsing failed, -1 on success (!) - */ -static int -parse_json (json_t *root, - struct MAJ_Specification *spec) -{ - int i; - json_t *pos; /* what's our current position? */ - - pos = root; - for (i=0;MAJ_CMD_END != spec[i].cmd;i++) - { - pos = json_object_get (root, - spec[i].field); - if (NULL == pos) - { - GNUNET_break_op (0); - return i; - } - switch (spec[i].cmd) - { - case MAJ_CMD_END: - GNUNET_assert (0); - return i; - case MAJ_CMD_AMOUNT: - if (GNUNET_OK != - TALER_json_to_amount (pos, - spec[i].details.amount)) - { - GNUNET_break_op (0); - return i; - } - break; - case MAJ_CMD_TIME_ABSOLUTE: - if (GNUNET_OK != - TALER_json_to_abs (pos, - spec[i].details.abs_time)) - { - GNUNET_break_op (0); - return i; - } - break; - - case MAJ_CMD_STRING: - { - const char *str; - - str = json_string_value (pos); - if (NULL == str) - { - GNUNET_break_op (0); - return i; - } - *spec[i].details.strptr = str; - } - break; - - case MAJ_CMD_BINARY_FIXED: - { - const char *str; - int res; - - str = json_string_value (pos); - if (NULL == str) - { - GNUNET_break_op (0); - return i; - } - res = GNUNET_STRINGS_string_to_data (str, strlen (str), - spec[i].details.fixed_data.dest, - spec[i].details.fixed_data.dest_size); - if (GNUNET_OK != res) - { - GNUNET_break_op (0); - return i; - } - } - break; - - case MAJ_CMD_BINARY_VARIABLE: - { - const char *str; - size_t size; - void *data; - int res; - - str = json_string_value (pos); - if (NULL == str) - { - GNUNET_break_op (0); - return i; - } - size = (strlen (str) * 5) / 8; - if (size >= 1024) - { - GNUNET_break_op (0); - return i; - } - data = GNUNET_malloc (size); - res = GNUNET_STRINGS_string_to_data (str, - strlen (str), - data, - size); - if (GNUNET_OK != res) - { - GNUNET_break_op (0); - GNUNET_free (data); - return i; - } - *spec[i].details.variable_data.dest_p = data; - *spec[i].details.variable_data.dest_size_p = size; - } - break; - - case MAJ_CMD_RSA_PUBLIC_KEY: - { - size_t size; - const char *str; - int res; - void *buf; - - str = json_string_value (pos); - if (NULL == str) - { - GNUNET_break_op (0); - return i; - } - size = (strlen (str) * 5) / 8; - buf = GNUNET_malloc (size); - res = GNUNET_STRINGS_string_to_data (str, - strlen (str), - buf, - size); - if (GNUNET_OK != res) - { - GNUNET_free (buf); - GNUNET_break_op (0); - return i; - } - *spec[i].details.rsa_public_key - = GNUNET_CRYPTO_rsa_public_key_decode (buf, - size); - GNUNET_free (buf); - if (NULL == spec[i].details.rsa_public_key) - { - GNUNET_break_op (0); - return i; - } - } - break; - - case MAJ_CMD_RSA_SIGNATURE: - { - size_t size; - const char *str; - int res; - void *buf; - - str = json_string_value (pos); - if (NULL == str) - { - GNUNET_break_op (0); - return i; - } - size = (strlen (str) * 5) / 8; - buf = GNUNET_malloc (size); - res = GNUNET_STRINGS_string_to_data (str, - strlen (str), - buf, - size); - if (GNUNET_OK != res) - { - GNUNET_free (buf); - GNUNET_break_op (0); - return i; - } - *spec[i].details.rsa_signature - = GNUNET_CRYPTO_rsa_signature_decode (buf, - size); - GNUNET_free (buf); - if (NULL == spec[i].details.rsa_signature) - return i; - } - break; - - case MAJ_CMD_UINT16: - { - json_int_t val; - - if (! json_is_integer (pos)) - { - GNUNET_break_op (0); - return i; - } - val = json_integer_value (pos); - if ( (0 > val) || (val > UINT16_MAX) ) - { - GNUNET_break_op (0); - return i; - } - *spec[i].details.u16 = (uint16_t) val; - } - break; - - case MAJ_CMD_UINT64: - { - json_int_t val; - - if (! json_is_integer (pos)) - { - GNUNET_break_op (0); - return i; - } - val = json_integer_value (pos); - *spec[i].details.u64 = (uint64_t) val; - } - break; - - case MAJ_CMD_JSON_OBJECT: - { - if (! (json_is_object (pos) || json_is_array (pos)) ) - { - GNUNET_break_op (0); - return i; - } - json_incref (pos); - *spec[i].details.obj = pos; - } - break; - - default: - GNUNET_break (0); - return i; - } - } - return -1; /* all OK! */ -} - - -/** - * Free all elements allocated during a - * #MAJ_parse_json() operation. - * - * @param spec specification of the parse operation - * @param end number of elements in @a spec to process - */ -static void -parse_free (struct MAJ_Specification *spec, - int end) -{ - int i; - - for (i=0;i<end;i++) - { - switch (spec[i].cmd) - { - case MAJ_CMD_END: - GNUNET_assert (0); - return; - case MAJ_CMD_AMOUNT: - break; - case MAJ_CMD_TIME_ABSOLUTE: - break; - case MAJ_CMD_BINARY_FIXED: - break; - case MAJ_CMD_STRING: - break; - case MAJ_CMD_BINARY_VARIABLE: - GNUNET_free (*spec[i].details.variable_data.dest_p); - *spec[i].details.variable_data.dest_p = NULL; - *spec[i].details.variable_data.dest_size_p = 0; - break; - case MAJ_CMD_RSA_PUBLIC_KEY: - GNUNET_CRYPTO_rsa_public_key_free (*spec[i].details.rsa_public_key); - *spec[i].details.rsa_public_key = NULL; - break; - case MAJ_CMD_RSA_SIGNATURE: - GNUNET_CRYPTO_rsa_signature_free (*spec[i].details.rsa_signature); - *spec[i].details.rsa_signature = NULL; - break; - case MAJ_CMD_JSON_OBJECT: - json_decref (*spec[i].details.obj); - *spec[i].details.obj = NULL; - break; - default: - GNUNET_break (0); - break; - } - } -} - - -/** - * Navigate and parse data in a JSON tree. - * - * @param root the JSON node to start the navigation at. - * @param spec parse specification array - * @return #GNUNET_OK on success, #GNUNET_SYSERR on error - */ -int -MAJ_parse_json (const json_t *root, - struct MAJ_Specification *spec) -{ - int ret; - - ret = parse_json ((json_t *) root, - spec); - if (-1 == ret) - return GNUNET_OK; - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "JSON field `%s` (%d) had unexpected value\n", - spec[ret].field, - ret); - parse_free (spec, ret); - return GNUNET_SYSERR; -} - - -/** - * Free all elements allocated during a - * #MAJ_parse_json() operation. - * - * @param spec specification of the parse operation - */ -void -MAJ_parse_free (struct MAJ_Specification *spec) -{ - int i; - - for (i=0;MAJ_CMD_END != spec[i].cmd;i++) ; - parse_free (spec, i); -} - - -/** - * The expected field stores a string. - * - * @param name name of the JSON field - * @param strptr where to store a pointer to the field - */ -struct MAJ_Specification -MAJ_spec_string (const char *name, - const char **strptr) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_STRING, - .field = name, - .details.strptr = strptr - }; - return ret; -} - - -/** - * Specification for parsing an absolute time value. - * - * @param name name of the JSON field - * @param at where to store the absolute time found under @a name - */ -struct MAJ_Specification -MAJ_spec_absolute_time (const char *name, - struct GNUNET_TIME_Absolute *at) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_TIME_ABSOLUTE, - .field = name, - .details.abs_time = at - }; - return ret; -} - - -/** - * Specification for parsing an amount value. - * - * @param name name of the JSON field - * @param amount where to store the amount found under @a name - */ -struct MAJ_Specification -MAJ_spec_amount (const char *name, - struct TALER_Amount *amount) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_AMOUNT, - .field = name, - .details.amount = amount - }; - return ret; -} - - -/** - * 16-bit integer. - * - * @param name name of the JSON field - * @param[out] u16 where to store the integer found under @a name - */ -struct MAJ_Specification -MAJ_spec_uint16 (const char *name, - uint16_t *u16) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_UINT16, - .field = name, - .details.u16 = u16 - }; - return ret; -} - - -/** - * 64-bit integer. - * - * @param name name of the JSON field - * @param[out] u64 where to store the integer found under @a name - */ -struct MAJ_Specification -MAJ_spec_uint64 (const char *name, - uint64_t *u64) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_UINT64, - .field = name, - .details.u64 = u64 - }; - return ret; -} - - -/** - * JSON object. - * - * @param name name of the JSON field - * @param[out] jsonp where to store the JSON found under @a name - */ -struct MAJ_Specification -MAJ_spec_json (const char *name, - json_t **jsonp) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_JSON_OBJECT, - .field = name, - .details.obj = jsonp - }; - return ret; -} - - -/** - * Specification for parsing an RSA public key. - * - * @param name name of the JSON field - * @param pk where to store the RSA key found under @a name - */ -struct MAJ_Specification -MAJ_spec_rsa_public_key (const char *name, - struct GNUNET_CRYPTO_rsa_PublicKey **pk) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_RSA_PUBLIC_KEY, - .field = name, - .details.rsa_public_key = pk - }; - return ret; -} - - -/** - * Specification for parsing an RSA signature. - * - * @param name name of the JSON field - * @param sig where to store the RSA signature found under @a name - */ -struct MAJ_Specification -MAJ_spec_rsa_signature (const char *name, - struct GNUNET_CRYPTO_rsa_Signature **sig) -{ - struct MAJ_Specification ret = - { - .cmd = MAJ_CMD_RSA_SIGNATURE, - .field = name, - .details.rsa_signature = sig - }; - return ret; -} - - -/* end of mint_api_json.c */ diff --git a/src/mint-lib/mint_api_json.h b/src/mint-lib/mint_api_json.h deleted file mode 100644 index 6bc3a557..00000000 --- a/src/mint-lib/mint_api_json.h +++ /dev/null @@ -1,352 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU Affero General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. - - You should have received a copy of the GNU Affero General Public License along with - TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_json.h - * @brief functions to parse incoming requests (JSON snippets) - * @author Florian Dold - * @author Benedikt Mueller - * @author Christian Grothoff - */ -#include "platform.h" -#include <gnunet/gnunet_util_lib.h> -#include "taler_util.h" -#include <jansson.h> - - -/** - * Enumeration with the various commands for the - * #MAJ_parse_json interpreter. - */ -enum MAJ_Command -{ - - /** - * End of command list. - */ - MAJ_CMD_END, - - /** - * Parse amount at current position. - */ - MAJ_CMD_AMOUNT, - - /** - * Parse absolute time at current position. - */ - MAJ_CMD_TIME_ABSOLUTE, - - /** - * Parse fixed binary value at current position. - */ - MAJ_CMD_BINARY_FIXED, - - /** - * Parse variable-size binary value at current position. - */ - MAJ_CMD_BINARY_VARIABLE, - - /** - * Parse RSA public key at current position. - */ - MAJ_CMD_RSA_PUBLIC_KEY, - - /** - * Parse RSA signature at current position. - */ - MAJ_CMD_RSA_SIGNATURE, - - /** - * Parse `const char *` JSON string at current position. - */ - MAJ_CMD_STRING, - - /** - * Parse `uint16_t` integer at the current position. - */ - MAJ_CMD_UINT16, - - /** - * Parse `uint64_t` integer at the current position. - */ - MAJ_CMD_UINT64, - - /** - * Parse JSON object at the current position. - */ - MAJ_CMD_JSON_OBJECT, - - /** - * Parse ??? at current position. - */ - MAJ_CMD_C - -}; - - -/** - * @brief Entry in parser specification for #MAJ_parse_json. - */ -struct MAJ_Specification -{ - - /** - * Command to execute. - */ - enum MAJ_Command cmd; - - /** - * Name of the field to access. - */ - const char *field; - - /** - * Further details for the command. - */ - union { - - /** - * Where to store amount for #MAJ_CMD_AMOUNT. - */ - struct TALER_Amount *amount; - - /** - * Where to store time, for #MAJ_CMD_TIME_ABSOLUTE. - */ - struct GNUNET_TIME_Absolute *abs_time; - - /** - * Where to write binary data, for #MAJ_CMD_BINARY_FIXED. - */ - struct { - /** - * Where to write the data. - */ - void *dest; - - /** - * How many bytes to write to @e dest. - */ - size_t dest_size; - - } fixed_data; - - /** - * Where to write binary data, for #MAJ_CMD_BINARY_VARIABLE. - */ - struct { - /** - * Where to store the pointer with the data (is allocated). - */ - void **dest_p; - - /** - * Where to store the number of bytes allocated at `*dest`. - */ - size_t *dest_size_p; - - } variable_data; - - /** - * Where to store the RSA public key for #MAJ_CMD_RSA_PUBLIC_KEY - */ - struct GNUNET_CRYPTO_rsa_PublicKey **rsa_public_key; - - /** - * Where to store the RSA signature for #MAJ_CMD_RSA_SIGNATURE - */ - struct GNUNET_CRYPTO_rsa_Signature **rsa_signature; - - /** - * Details for #MAJ_CMD_EDDSA_SIGNATURE - */ - struct { - - /** - * Where to store the purpose. - */ - struct GNUNET_CRYPTO_EccSignaturePurpose **purpose_p; - - /** - * Key to verify the signature against. - */ - const struct GNUNET_CRYPTO_EddsaPublicKey *pub_key; - - } eddsa_signature; - - /** - * Where to store a pointer to the string. - */ - const char **strptr; - - /** - * Where to store 16-bit integer. - */ - uint16_t *u16; - - /** - * Where to store 64-bit integer. - */ - uint64_t *u64; - - /** - * Where to store a JSON object. - */ - json_t **obj; - - } details; - -}; - - -/** - * Navigate and parse data in a JSON tree. - * - * @param root the JSON node to start the navigation at. - * @param spec parse specification array - * @return #GNUNET_OK on success, #GNUNET_SYSERR on error - */ -int -MAJ_parse_json (const json_t *root, - struct MAJ_Specification *spec); - - -/** - * Free all elements allocated during a - * #MAJ_parse_json() operation. - * - * @param spec specification of the parse operation - */ -void -MAJ_parse_free (struct MAJ_Specification *spec); - - -/** - * End of a parser specification. - */ -#define MAJ_spec_end { .cmd = MAJ_CMD_END } - -/** - * Fixed size object (in network byte order, encoded using Crockford - * Base32hex encoding). - * - * @param name name of the JSON field - * @param obj pointer where to write the data (type of `*obj` will determine size) - */ -#define MAJ_spec_fixed_auto(name,obj) { .cmd = MAJ_CMD_BINARY_FIXED, .field = name, .details.fixed_data.dest = obj, .details.fixed_data.dest_size = sizeof (*obj) } - - -/** - * Variable size object (in network byte order, encoded using Crockford - * Base32hex encoding). - * - * @param name name of the JSON field - * @param obj pointer where to write the data (a `void **`) - * @param size where to store the number of bytes allocated for @a obj (of type `size_t *` - */ -#define MAJ_spec_varsize(name,obj,size) { .cmd = MAJ_CMD_BINARY_VARIABLE, .field = name, .details.variable_data.dest_p = obj, .details.variable_data.dest_size_p = size } - - -/** - * The expected field stores a string. - * - * @param name name of the JSON field - * @param strptr where to store a pointer to the field - */ -struct MAJ_Specification -MAJ_spec_string (const char *name, - const char **strptr); - - -/** - * Absolute time. - * - * @param name name of the JSON field - * @param[out] at where to store the absolute time found under @a name - */ -struct MAJ_Specification -MAJ_spec_absolute_time (const char *name, - struct GNUNET_TIME_Absolute *at); - - -/** - * 16-bit integer. - * - * @param name name of the JSON field - * @param[out] u16 where to store the integer found under @a name - */ -struct MAJ_Specification -MAJ_spec_uint16 (const char *name, - uint16_t *u16); - - -/** - * 64-bit integer. - * - * @param name name of the JSON field - * @param[out] u64 where to store the integer found under @a name - */ -struct MAJ_Specification -MAJ_spec_uint64 (const char *name, - uint64_t *u64); - - -/** - * JSON object. - * - * @param name name of the JSON field - * @param[out] jsonp where to store the JSON found under @a name - */ -struct MAJ_Specification -MAJ_spec_json (const char *name, - json_t **jsonp); - - -/** - * Specification for parsing an amount value. - * - * @param name name of the JSON field - * @param amount where to store the amount under @a name - */ -struct MAJ_Specification -MAJ_spec_amount (const char *name, - struct TALER_Amount *amount); - - -/** - * Specification for parsing an RSA public key. - * - * @param name name of the JSON field - * @param pk where to store the RSA key found under @a name - */ -struct MAJ_Specification -MAJ_spec_rsa_public_key (const char *name, - struct GNUNET_CRYPTO_rsa_PublicKey **pk); - - -/** - * Specification for parsing an RSA signature. - * - * @param name name of the JSON field - * @param sig where to store the RSA signature found under @a name - */ -struct MAJ_Specification -MAJ_spec_rsa_signature (const char *name, - struct GNUNET_CRYPTO_rsa_Signature **sig); - - - - -/* end of mint_api_json.h */ diff --git a/src/mint-lib/mint_api_refresh.c b/src/mint-lib/mint_api_refresh.c deleted file mode 100644 index cea16b15..00000000 --- a/src/mint-lib/mint_api_refresh.c +++ /dev/null @@ -1,2061 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_refresh.c - * @brief Implementation of the /refresh/melt+reveal requests of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_common.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/* ********************* /refresh/ common ***************************** */ - -/* structures for committing refresh data to disk before doing the - network interaction(s) */ - -GNUNET_NETWORK_STRUCT_BEGIN - -/** - * Header of serialized information about a coin we are melting. - */ -struct MeltedCoinP -{ - /** - * Private key of the coin. - */ - struct TALER_CoinSpendPrivateKeyP coin_priv; - - /** - * Amount this coin contributes to the melt, including fee. - */ - struct TALER_AmountNBO melt_amount_with_fee; - - /** - * The applicable fee for withdrawing a coin of this denomination - */ - struct TALER_AmountNBO fee_melt; - - /** - * The original value of the coin. - */ - struct TALER_AmountNBO original_value; - - /** - * Transfer private keys for each cut-and-choose dimension. - */ - struct TALER_TransferPrivateKeyP transfer_priv[TALER_CNC_KAPPA]; - - /** - * Timestamp indicating when coins of this denomination become invalid. - */ - struct GNUNET_TIME_AbsoluteNBO deposit_valid_until; - - /** - * Size of the encoded public key that follows. - */ - uint16_t pbuf_size; - - /** - * Size of the encoded signature that follows. - */ - uint16_t sbuf_size; - - /* Followed by serializations of: - 1) struct TALER_DenominationPublicKey pub_key; - 2) struct TALER_DenominationSignature sig; - */ -}; - - -/** - * Header for serializations of coin-specific information about the - * fresh coins we generate during a melt. - */ -struct FreshCoinP -{ - - /** - * Private key of the coin. - */ - struct TALER_CoinSpendPrivateKeyP coin_priv; - - /** - * Size of the encoded blinding key that follows. - */ - uint32_t bbuf_size; - - /* Followed by serialization of: - - struct TALER_DenominationBlindingKey blinding_key; - */ - -}; - - -/** - * Header of serialized data about a melt operation, suitable for - * persisting it on disk. - */ -struct MeltDataP -{ - - /** - * Hash over the melting session. - */ - struct GNUNET_HashCode melt_session_hash; - - /** - * Link secret used to encrypt the @a coin_priv and the blinding - * key in the linkage data for the respective cut-and-choose dimension. - */ - struct TALER_LinkSecretP link_secrets[TALER_CNC_KAPPA]; - - /** - * Number of coins we are melting, in NBO - */ - uint16_t num_melted_coins GNUNET_PACKED; - - /** - * Number of coins we are creating, in NBO - */ - uint16_t num_fresh_coins GNUNET_PACKED; - - /* Followed by serializations of: - 1) struct MeltedCoinP melted_coins[num_melted_coins]; - 2) struct TALER_MINT_DenomPublicKey fresh_pks[num_fresh_coins]; - 3) TALER_CNC_KAPPA times: - 3a) struct FreshCoinP fresh_coins[num_fresh_coins]; - */ -}; - - -GNUNET_NETWORK_STRUCT_END - - -/** - * Information about a coin we are melting. - */ -struct MeltedCoin -{ - /** - * Private key of the coin. - */ - struct TALER_CoinSpendPrivateKeyP coin_priv; - - /** - * Amount this coin contributes to the melt, including fee. - */ - struct TALER_Amount melt_amount_with_fee; - - /** - * The applicable fee for melting a coin of this denomination - */ - struct TALER_Amount fee_melt; - - /** - * The original value of the coin. - */ - struct TALER_Amount original_value; - - /** - * Transfer private keys for each cut-and-choose dimension. - */ - struct TALER_TransferPrivateKeyP transfer_priv[TALER_CNC_KAPPA]; - - /** - * Timestamp indicating when coins of this denomination become invalid. - */ - struct GNUNET_TIME_Absolute deposit_valid_until; - - /** - * Denomination key of the original coin. - */ - struct TALER_DenominationPublicKey pub_key; - - /** - * Mint's signature over the coin. - */ - struct TALER_DenominationSignature sig; - -}; - - -/** - * Coin-specific information about the fresh coins we generate during - * a melt. - */ -struct FreshCoin -{ - - /** - * Private key of the coin. - */ - struct TALER_CoinSpendPrivateKeyP coin_priv; - - /** - * Blinding key used for blinding during blind signing. - */ - struct TALER_DenominationBlindingKey blinding_key; - -}; - - -/** - * Melt data in non-serialized format for convenient processing. - */ -struct MeltData -{ - - /** - * Hash over the melting session. - */ - struct GNUNET_HashCode melt_session_hash; - - /** - * Link secrets for each cut-and-choose dimension. - */ - struct TALER_LinkSecretP link_secrets[TALER_CNC_KAPPA]; - - /** - * Number of coins we are melting - */ - uint16_t num_melted_coins; - - /** - * Number of coins we are creating - */ - uint16_t num_fresh_coins; - - /** - * Information about the melted coins in an array of length @e - * num_melted_coins. - */ - struct MeltedCoin *melted_coins; - - /** - * Array of @e num_fresh_coins denomination keys for the coins to be - * freshly minted. - */ - struct TALER_DenominationPublicKey *fresh_pks; - - /** - * Arrays of @e num_fresh_coins with information about the fresh - * coins to be created, for each cut-and-choose dimension. - */ - struct FreshCoin *fresh_coins[TALER_CNC_KAPPA]; -}; - - -/** - * Free all information associated with a melted coin session. - * - * @param mc melted coin to release, the pointer itself is NOT - * freed (as it is typically not allocated by itself) - */ -static void -free_melted_coin (struct MeltedCoin *mc) -{ - if (NULL == mc) - return; - if (NULL != mc->pub_key.rsa_public_key) - GNUNET_CRYPTO_rsa_public_key_free (mc->pub_key.rsa_public_key); - if (NULL != mc->sig.rsa_signature) - GNUNET_CRYPTO_rsa_signature_free (mc->sig.rsa_signature); -} - - -/** - * Free all information associated with a fresh coin. - * - * @param fc fresh coin to release, the pointer itself is NOT - * freed (as it is typically not allocated by itself) - */ -static void -free_fresh_coin (struct FreshCoin *fc) -{ - if (NULL == fc) - return; - if (NULL != fc->blinding_key.rsa_blinding_key) - GNUNET_CRYPTO_rsa_blinding_key_free (fc->blinding_key.rsa_blinding_key); -} - - -/** - * Free all information associated with a melting session. Note - * that we allow the melting session to be only partially initialized, - * as we use this function also when freeing melt data that was not - * fully initialized (i.e. due to failures in #deserialize_melt_data()). - * - * @param md melting data to release, the pointer itself is NOT - * freed (as it is typically not allocated by itself) - */ -static void -free_melt_data (struct MeltData *md) -{ - unsigned int i; - unsigned int j; - - if (NULL != md->melted_coins) - { - for (i=0;i<md->num_melted_coins;i++) - free_melted_coin (&md->melted_coins[i]); - GNUNET_free (md->melted_coins); - } - if (NULL != md->fresh_pks) - { - for (i=0;i<md->num_fresh_coins;i++) - if (NULL != md->fresh_pks[i].rsa_public_key) - GNUNET_CRYPTO_rsa_public_key_free (md->fresh_pks[i].rsa_public_key); - GNUNET_free (md->fresh_pks); - } - - for (i=0;i<TALER_CNC_KAPPA;i++) - { - for (j=0;j<md->num_fresh_coins;j++) - free_fresh_coin (&md->fresh_coins[i][j]); - GNUNET_free (md->fresh_coins[i]); - } - /* Finally, clean up a bit... - (NOTE: compilers might optimize this away, so this is - not providing any strong assurances that the key material - is purged.) */ - memset (md, - 0, - sizeof (struct MeltData)); -} - - -/** - * Serialize information about a coin we are melting. - * - * @param mc information to serialize - * @param buf buffer to write data in, NULL to just compute - * required size - * @param off offeset at @a buf to use - * @return number of bytes written to @a buf at @a off, or if - * @a buf is NULL, number of bytes required; 0 on error - */ -static size_t -serialize_melted_coin (const struct MeltedCoin *mc, - char *buf, - size_t off) -{ - struct MeltedCoinP mcp; - unsigned int i; - char *pbuf; - size_t pbuf_size; - char *sbuf; - size_t sbuf_size; - - sbuf_size = GNUNET_CRYPTO_rsa_signature_encode (mc->sig.rsa_signature, - &sbuf); - pbuf_size = GNUNET_CRYPTO_rsa_public_key_encode (mc->pub_key.rsa_public_key, - &pbuf); - if (NULL == buf) - { - GNUNET_free (sbuf); - GNUNET_free (pbuf); - return sizeof (struct MeltedCoinP) + sbuf_size + pbuf_size; - } - if ( (sbuf_size > UINT16_MAX) || - (pbuf_size > UINT16_MAX) ) - { - GNUNET_break (0); - return 0; - } - mcp.coin_priv = mc->coin_priv; - TALER_amount_hton (&mcp.melt_amount_with_fee, - &mc->melt_amount_with_fee); - TALER_amount_hton (&mcp.fee_melt, - &mc->fee_melt); - TALER_amount_hton (&mcp.original_value, - &mc->original_value); - for (i=0;i<TALER_CNC_KAPPA;i++) - mcp.transfer_priv[i] = mc->transfer_priv[i]; - mcp.deposit_valid_until = GNUNET_TIME_absolute_hton (mc->deposit_valid_until); - mcp.pbuf_size = htons ((uint16_t) pbuf_size); - mcp.sbuf_size = htons ((uint16_t) sbuf_size); - memcpy (&buf[off], - &mcp, - sizeof (struct MeltedCoinP)); - memcpy (&buf[off + sizeof (struct MeltedCoinP)], - pbuf, - pbuf_size); - memcpy (&buf[off + sizeof (struct MeltedCoinP) + pbuf_size], - sbuf, - sbuf_size); - GNUNET_free (sbuf); - GNUNET_free (pbuf); - return sizeof (struct MeltedCoinP) + sbuf_size + pbuf_size; -} - - -/** - * Deserialize information about a coin we are melting. - * - * @param[out] mc information to deserialize - * @param buf buffer to read data from - * @param size number of bytes available at @a buf to use - * @param[out] ok set to #GNUNET_NO to report errors - * @return number of bytes read from @a buf, 0 on error - */ -static size_t -deserialize_melted_coin (struct MeltedCoin *mc, - const char *buf, - size_t size, - int *ok) -{ - struct MeltedCoinP mcp; - unsigned int i; - size_t pbuf_size; - size_t sbuf_size; - size_t off; - - if (size < sizeof (struct MeltedCoinP)) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - memcpy (&mcp, - buf, - sizeof (struct MeltedCoinP)); - pbuf_size = ntohs (mcp.pbuf_size); - sbuf_size = ntohs (mcp.sbuf_size); - if (size < sizeof (struct MeltedCoinP) + pbuf_size + sbuf_size) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - off = sizeof (struct MeltedCoinP); - mc->pub_key.rsa_public_key - = GNUNET_CRYPTO_rsa_public_key_decode (&buf[off], - pbuf_size); - off += pbuf_size; - mc->sig.rsa_signature - = GNUNET_CRYPTO_rsa_signature_decode (&buf[off], - sbuf_size); - off += sbuf_size; - if ( (NULL == mc->pub_key.rsa_public_key) || - (NULL == mc->sig.rsa_signature) ) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - - mc->coin_priv = mcp.coin_priv; - TALER_amount_ntoh (&mc->melt_amount_with_fee, - &mcp.melt_amount_with_fee); - TALER_amount_ntoh (&mc->fee_melt, - &mcp.fee_melt); - TALER_amount_ntoh (&mc->original_value, - &mcp.original_value); - for (i=0;i<TALER_CNC_KAPPA;i++) - mc->transfer_priv[i] = mcp.transfer_priv[i]; - mc->deposit_valid_until = GNUNET_TIME_absolute_ntoh (mcp.deposit_valid_until); - return off; -} - - -/** - * Serialize information about a denomination key. - * - * @param dk information to serialize - * @param buf buffer to write data in, NULL to just compute - * required size - * @param off offeset at @a buf to use - * @return number of bytes written to @a buf at @a off, or if - * @a buf is NULL, number of bytes required - */ -static size_t -serialize_denomination_key (const struct TALER_DenominationPublicKey *dk, - char *buf, - size_t off) -{ - char *pbuf; - size_t pbuf_size; - uint32_t be; - - pbuf_size = GNUNET_CRYPTO_rsa_public_key_encode (dk->rsa_public_key, - &pbuf); - if (NULL == buf) - { - GNUNET_free (pbuf); - return pbuf_size + sizeof (uint32_t); - } - be = htonl ((uint32_t) pbuf_size); - memcpy (&buf[off], - &be, - sizeof (uint32_t)); - memcpy (&buf[off + sizeof (uint32_t)], - pbuf, - pbuf_size); - GNUNET_free (pbuf); - return pbuf_size + sizeof (uint32_t); -} - - -/** - * Deserialize information about a denomination key. - * - * @param[out] dk information to deserialize - * @param buf buffer to read data from - * @param size number of bytes available at @a buf to use - * @param[out] ok set to #GNUNET_NO to report errors - * @return number of bytes read from @a buf, 0 on error - */ -static size_t -deserialize_denomination_key (struct TALER_DenominationPublicKey *dk, - const char *buf, - size_t size, - int *ok) -{ - size_t pbuf_size; - uint32_t be; - - if (size < sizeof (uint32_t)) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - memcpy (&be, - buf, - sizeof (uint32_t)); - pbuf_size = ntohl (be); - if (size < sizeof (uint32_t) + pbuf_size) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - dk->rsa_public_key - = GNUNET_CRYPTO_rsa_public_key_decode (&buf[sizeof (uint32_t)], - pbuf_size); - - if (NULL == dk->rsa_public_key) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - return sizeof (uint32_t) + pbuf_size; -} - - -/** - * Serialize information about a fresh coin we are generating. - * - * @param fc information to serialize - * @param buf buffer to write data in, NULL to just compute - * required size - * @param off offeset at @a buf to use - * @return number of bytes written to @a buf at @a off, or if - * @a buf is NULL, number of bytes required - */ -static size_t -serialize_fresh_coin (const struct FreshCoin *fc, - char *buf, - size_t off) -{ - struct FreshCoinP fcp; - char *bbuf; - size_t bbuf_size; - - bbuf_size = GNUNET_CRYPTO_rsa_blinding_key_encode (fc->blinding_key.rsa_blinding_key, - &bbuf); - if (NULL == buf) - { - GNUNET_free (bbuf); - return sizeof (struct FreshCoinP) + bbuf_size; - } - fcp.coin_priv = fc->coin_priv; - fcp.bbuf_size = htonl ((uint32_t) bbuf_size); - memcpy (&buf[off], - &fcp, - sizeof (struct FreshCoinP)); - memcpy (&buf[off + sizeof (struct FreshCoinP)], - bbuf, - bbuf_size); - GNUNET_free (bbuf); - return sizeof (struct FreshCoinP) + bbuf_size; -} - - -/** - * Deserialize information about a fresh coin we are generating. - * - * @param[out] fc information to deserialize - * @param buf buffer to read data from - * @param size number of bytes available at @a buf to use - * @param[out] ok set to #GNUNET_NO to report errors - * @return number of bytes read from @a buf, 0 on error - */ -static size_t -deserialize_fresh_coin (struct FreshCoin *fc, - const char *buf, - size_t size, - int *ok) -{ - struct FreshCoinP fcp; - size_t bbuf_size; - - if (size < sizeof (struct FreshCoinP)) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - memcpy (&fcp, - buf, - sizeof (struct FreshCoinP)); - bbuf_size = ntohl (fcp.bbuf_size); - if (size < sizeof (struct FreshCoinP) + bbuf_size) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - fc->blinding_key.rsa_blinding_key - = GNUNET_CRYPTO_rsa_blinding_key_decode (&buf[sizeof (struct FreshCoinP)], - bbuf_size); - if (NULL == fc->blinding_key.rsa_blinding_key) - { - GNUNET_break (0); - *ok = GNUNET_NO; - return 0; - } - fc->coin_priv = fcp.coin_priv; - return sizeof (struct FreshCoinP) + bbuf_size; -} - - -/** - * Serialize melt data. - * - * @param md data to serialize - * @param[out] res_size size of buffer returned - * @return serialized melt data - */ -static char * -serialize_melt_data (const struct MeltData *md, - size_t *res_size) -{ - size_t size; - size_t asize; - char *buf; - unsigned int i; - unsigned int j; - - size = 0; - asize = (size_t) -1; /* make the compiler happy */ - buf = NULL; - /* we do 2 iterations, #1 to determine total size, #2 to - actually construct the buffer */ - do { - if (0 == size) - { - size = sizeof (struct MeltDataP); - } - else - { - struct MeltDataP *mdp; - - buf = GNUNET_malloc (size); - asize = size; /* just for invariant check later */ - size = sizeof (struct MeltDataP); - mdp = (struct MeltDataP *) buf; - mdp->melt_session_hash = md->melt_session_hash; - for (i=0;i<TALER_CNC_KAPPA;i++) - mdp->link_secrets[i] = md->link_secrets[i]; - mdp->num_melted_coins = htons (md->num_melted_coins); - mdp->num_fresh_coins = htons (md->num_fresh_coins); - } - for (i=0;i<md->num_melted_coins;i++) - size += serialize_melted_coin (&md->melted_coins[i], - buf, - size); - for (i=0;i<md->num_fresh_coins;i++) - size += serialize_denomination_key (&md->fresh_pks[i], - buf, - size); - for (i=0;i<TALER_CNC_KAPPA;i++) - for(j=0;j<md->num_fresh_coins;j++) - size += serialize_fresh_coin (&md->fresh_coins[i][j], - buf, - size); - } while (NULL == buf); - GNUNET_assert (size == asize); - *res_size = size; - return buf; -} - - -/** - * Deserialize melt data. - * - * @param buf serialized data - * @param buf_size size of @a buf - * @return deserialized melt data, NULL on error - */ -static struct MeltData * -deserialize_melt_data (const char *buf, - size_t buf_size) -{ - struct MeltData *md; - struct MeltDataP mdp; - unsigned int i; - unsigned int j; - size_t off; - int ok; - - if (buf_size < sizeof (struct MeltDataP)) - return NULL; - memcpy (&mdp, - buf, - sizeof (struct MeltDataP)); - md = GNUNET_new (struct MeltData); - md->melt_session_hash = mdp.melt_session_hash; - for (i=0;i<TALER_CNC_KAPPA;i++) - md->link_secrets[i] = mdp.link_secrets[i]; - md->num_melted_coins = ntohs (mdp.num_melted_coins); - md->num_fresh_coins = ntohs (mdp.num_fresh_coins); - md->melted_coins = GNUNET_new_array (md->num_melted_coins, - struct MeltedCoin); - md->fresh_pks = GNUNET_new_array (md->num_fresh_coins, - struct TALER_DenominationPublicKey); - for (i=0;i<TALER_CNC_KAPPA;i++) - md->fresh_coins[i] = GNUNET_new_array (md->num_fresh_coins, - struct FreshCoin); - off = sizeof (struct MeltDataP); - ok = GNUNET_YES; - for (i=0;(i<md->num_melted_coins)&&(GNUNET_YES == ok);i++) - off += deserialize_melted_coin (&md->melted_coins[i], - &buf[off], - buf_size - off, - &ok); - for (i=0;(i<md->num_fresh_coins)&&(GNUNET_YES == ok);i++) - off += deserialize_denomination_key (&md->fresh_pks[i], - &buf[off], - buf_size - off, - &ok); - - for (i=0;i<TALER_CNC_KAPPA;i++) - for(j=0;(j<md->num_fresh_coins)&&(GNUNET_YES == ok);j++) - off += deserialize_fresh_coin (&md->fresh_coins[i][j], - &buf[off], - buf_size - off, - &ok); - if (off != buf_size) - { - GNUNET_break (0); - ok = GNUNET_NO; - } - if (GNUNET_YES != ok) - { - free_melt_data (md); - GNUNET_free (md); - return NULL; - } - return md; -} - - -/** - * Setup information for a fresh coin. - * - * @param[out] fc value to initialize - * @param pk denomination information for the fresh coin - */ -static void -setup_fresh_coin (struct FreshCoin *fc, - const struct TALER_MINT_DenomPublicKey *pk) -{ - struct GNUNET_CRYPTO_EddsaPrivateKey *epk; - unsigned int len; - - epk = GNUNET_CRYPTO_eddsa_key_create (); - fc->coin_priv.eddsa_priv = *epk; - GNUNET_free (epk); - len = GNUNET_CRYPTO_rsa_public_key_len (pk->key.rsa_public_key); - fc->blinding_key.rsa_blinding_key - = GNUNET_CRYPTO_rsa_blinding_key_create (len); -} - - -/** - * Melt (partially spent) coins to obtain fresh coins that are - * unlinkable to the original coin(s). Note that melting more - * than one coin in a single request will make those coins linkable, - * so the safest operation only melts one coin at a time. - * - * This API is typically used by a wallet. Note that to ensure that - * no money is lost in case of hardware failures, is operation does - * not actually initiate the request. Instead, it generates a buffer - * which the caller must store before proceeding with the actual call - * to #TALER_MINT_refresh_melt() that will generate the request. - * - * This function does verify that the given request data is internally - * consistent. However, the @a melts_sigs are only verified if - * @a check_sigs is set to #GNUNET_YES, as this may be relatively - * expensive and should be redundant. - * - * Aside from some non-trivial cryptographic operations that might - * take a bit of CPU time to complete, this function returns - * its result immediately and does not start any asynchronous - * processing. This function is also thread-safe. - * - * @param num_melts number of coins that are being melted (typically 1) - * @param melt_privs array of @a num_melts private keys of the coins to melt - * @param melt_amounts array of @a num_melts amounts specifying how much - * each coin will contribute to the melt (including fee) - * @param melt_sigs array of @a num_melts signatures affirming the - * validity of the public keys corresponding to the - * @a melt_privs private keys - * @param melt_pks array of @a num_melts denomination key information - * records corresponding to the @a melt_sigs - * validity of the keys - * @param check_sigs verify the validity of the signatures of @a melt_sigs - * @param fresh_pks_len length of the @a pks array - * @param fresh_pks array of @a pks_len denominations of fresh coins to create - * @param[out] res_size set to the size of the return value, or 0 on error - * @return NULL - * if the inputs are invalid (i.e. denomination key not with this mint). - * Otherwise, pointer to a buffer of @a res_size to store persistently - * before proceeding to #TALER_MINT_refresh_melt(). - * Non-null results should be freed using #GNUNET_free(). - */ -char * -TALER_MINT_refresh_prepare (unsigned int num_melts, - const struct TALER_CoinSpendPrivateKeyP *melt_privs, - const struct TALER_Amount *melt_amounts, - const struct TALER_DenominationSignature *melt_sigs, - const struct TALER_MINT_DenomPublicKey *melt_pks, - int check_sigs, - unsigned int fresh_pks_len, - const struct TALER_MINT_DenomPublicKey *fresh_pks, - size_t *res_size) -{ - struct MeltData md; - char *buf; - unsigned int i; - unsigned int j; - struct GNUNET_HashContext *hash_context; - - /* build up melt data structure */ - for (i=0;i<TALER_CNC_KAPPA;i++) - GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_STRONG, - &md.link_secrets[i], - sizeof (struct TALER_LinkSecretP)); - md.num_melted_coins = num_melts; - md.num_fresh_coins = fresh_pks_len; - md.melted_coins = GNUNET_new_array (num_melts, - struct MeltedCoin); - for (i=0;i<num_melts;i++) - { - md.melted_coins[i].coin_priv = melt_privs[i]; - md.melted_coins[i].melt_amount_with_fee = melt_amounts[i]; - md.melted_coins[i].fee_melt = melt_pks[i].fee_refresh; - md.melted_coins[i].original_value = melt_pks[i].value; - for (j=0;j<TALER_CNC_KAPPA;j++) - { - struct GNUNET_CRYPTO_EcdhePrivateKey *tpk; - - tpk = GNUNET_CRYPTO_ecdhe_key_create (); - md.melted_coins[i].transfer_priv[j].ecdhe_priv = *tpk; - GNUNET_free (tpk); - } - md.melted_coins[i].deposit_valid_until - = melt_pks[i].deposit_valid_until; - md.melted_coins[i].pub_key.rsa_public_key - = GNUNET_CRYPTO_rsa_public_key_dup (melt_pks[i].key.rsa_public_key); - md.melted_coins[i].sig.rsa_signature - = GNUNET_CRYPTO_rsa_signature_dup (melt_sigs[i].rsa_signature); - } - md.fresh_pks = GNUNET_new_array (fresh_pks_len, - struct TALER_DenominationPublicKey); - for (i=0;i<fresh_pks_len;i++) - md.fresh_pks[i].rsa_public_key - = GNUNET_CRYPTO_rsa_public_key_dup (fresh_pks[i].key.rsa_public_key); - for (i=0;i<TALER_CNC_KAPPA;i++) - { - md.fresh_coins[i] = GNUNET_new_array (fresh_pks_len, - struct FreshCoin); - for (j=0;j<fresh_pks_len;j++) - setup_fresh_coin (&md.fresh_coins[i][j], - &fresh_pks[j]); - } - - /* now compute melt session hash */ - hash_context = GNUNET_CRYPTO_hash_context_start (); - for (i=0;i<fresh_pks_len;i++) - { - char *buf; - size_t buf_size; - - buf_size = GNUNET_CRYPTO_rsa_public_key_encode (fresh_pks[i].key.rsa_public_key, - &buf); - GNUNET_CRYPTO_hash_context_read (hash_context, - buf, - buf_size); - GNUNET_free (buf); - } - for (i=0;i<num_melts;i++) - { - struct TALER_CoinSpendPublicKeyP coin_pub; - struct TALER_AmountNBO melt_amount; - - GNUNET_CRYPTO_eddsa_key_get_public (&melt_privs[i].eddsa_priv, - &coin_pub.eddsa_pub); - GNUNET_CRYPTO_hash_context_read (hash_context, - &coin_pub, - sizeof (struct TALER_CoinSpendPublicKeyP)); - TALER_amount_hton (&melt_amount, - &melt_amounts[i]); - GNUNET_CRYPTO_hash_context_read (hash_context, - &melt_amount, - sizeof (struct TALER_AmountNBO)); - - } - for (i = 0; i < TALER_CNC_KAPPA; i++) - { - for (j = 0; j < fresh_pks_len; j++) - { - const struct FreshCoin *fc; /* coin this is about */ - struct TALER_CoinSpendPublicKeyP coin_pub; - struct GNUNET_HashCode coin_hash; - char *coin_ev; /* blinded message to be signed (in envelope) for each coin */ - size_t coin_ev_size; - struct TALER_RefreshLinkDecrypted rld; - struct TALER_RefreshLinkEncrypted *rle; - char *link_enc; /* encrypted link data */ - size_t link_enc_size; - - fc = &md.fresh_coins[i][j]; - GNUNET_CRYPTO_eddsa_key_get_public (&fc->coin_priv.eddsa_priv, - &coin_pub.eddsa_pub); - GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub, - sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey), - &coin_hash); - coin_ev_size = GNUNET_CRYPTO_rsa_blind (&coin_hash, - fc->blinding_key.rsa_blinding_key, - md.fresh_pks[j].rsa_public_key, - &coin_ev); - GNUNET_CRYPTO_hash_context_read (hash_context, - coin_ev, - coin_ev_size); - GNUNET_free (coin_ev); - - rld.coin_priv = fc->coin_priv; - rld.blinding_key = fc->blinding_key; - rle = TALER_refresh_encrypt (&rld, - &md.link_secrets[i]); - link_enc = TALER_refresh_link_encrypted_encode (rle, - &link_enc_size); - - GNUNET_CRYPTO_hash_context_read (hash_context, - link_enc, - link_enc_size); - GNUNET_free (link_enc); - } - } - for (i = 0; i < TALER_CNC_KAPPA; i++) - { - for (j = 0; j < num_melts; j++) - { - struct TALER_RefreshCommitLinkP rcl; - struct TALER_TransferSecretP trans_sec; - - GNUNET_CRYPTO_ecdhe_key_get_public (&md.melted_coins[j].transfer_priv[i].ecdhe_priv, - &rcl.transfer_pub.ecdhe_pub); - TALER_link_derive_transfer_secret (&melt_privs[j], - &md.melted_coins[j].transfer_priv[i], - &trans_sec); - TALER_transfer_encrypt (&md.link_secrets[i], - &trans_sec, - &rcl.shared_secret_enc); - GNUNET_CRYPTO_hash_context_read (hash_context, - &rcl, - sizeof (struct TALER_RefreshCommitLinkP)); - } - } - - GNUNET_CRYPTO_hash_context_finish (hash_context, - &md.melt_session_hash); - - /* finally, serialize everything */ - buf = serialize_melt_data (&md, - res_size); - free_melt_data (&md); - return buf; -} - - -/* ********************* /refresh/melt ***************************** */ - - -/** - * @brief A /refresh/melt Handle - */ -struct TALER_MINT_RefreshMeltHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * JSON encoding of the request to POST. - */ - char *json_enc; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with refresh melt failure results. - */ - TALER_MINT_RefreshMeltCallback melt_cb; - - /** - * Closure for @e result_cb and @e melt_failure_cb. - */ - void *melt_cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Actual information about the melt operation. - */ - struct MeltData *md; -}; - - -/** - * Verify that the signature on the "200 OK" response - * from the mint is valid. - * - * @param rmh melt handle - * @param json json reply with the signature - * @param[out] noreveal_index set to the noreveal index selected by the mint - * @return #GNUNET_OK if the signature is valid, #GNUNET_SYSERR if not - */ -static int -verify_refresh_melt_signature_ok (struct TALER_MINT_RefreshMeltHandle *rmh, - json_t *json, - uint16_t *noreveal_index) -{ - struct TALER_MintSignatureP mint_sig; - struct TALER_MintPublicKeyP mint_pub; - const struct TALER_MINT_Keys *key_state; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("mint_sig", &mint_sig), - MAJ_spec_fixed_auto ("mint_pub", &mint_pub), - MAJ_spec_uint16 ("noreveal_index", noreveal_index), - MAJ_spec_end - }; - struct TALER_RefreshMeltConfirmationPS confirm; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* check that mint signing key is permitted */ - key_state = TALER_MINT_get_keys (rmh->mint); - if (GNUNET_OK != - TALER_MINT_test_signing_key (key_state, - &mint_pub)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* check that noreveal index is in permitted range */ - if (TALER_CNC_KAPPA <= *noreveal_index) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* verify signature by mint */ - confirm.purpose.purpose = htonl (TALER_SIGNATURE_MINT_CONFIRM_MELT); - confirm.purpose.size = htonl (sizeof (struct TALER_RefreshMeltConfirmationPS)); - confirm.session_hash = rmh->md->melt_session_hash; - confirm.noreveal_index = htons (*noreveal_index); - confirm.reserved = htons (0); - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MINT_CONFIRM_MELT, - &confirm.purpose, - &mint_sig.eddsa_signature, - &mint_pub.eddsa_pub)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Verify that the signatures on the "403 FORBIDDEN" response from the - * mint demonstrating customer double-spending are valid. - * - * @param rmh melt handle - * @param json json reply with the signature(s) and transaction history - * @return #GNUNET_OK if the signature(s) is valid, #GNUNET_SYSERR if not - */ -static int -verify_refresh_melt_signature_forbidden (struct TALER_MINT_RefreshMeltHandle *rmh, - json_t *json) -{ - json_t *history; - struct TALER_Amount original_value; - struct TALER_Amount melt_value_with_fee; - struct TALER_Amount total; - struct TALER_CoinSpendPublicKeyP coin_pub; - unsigned int i; - struct MAJ_Specification spec[] = { - MAJ_spec_json ("history", &history), - MAJ_spec_fixed_auto ("coin_pub", &coin_pub), - MAJ_spec_amount ("original_value", &original_value), - MAJ_spec_amount ("requested_value", &melt_value_with_fee), - MAJ_spec_end - }; - const struct MeltedCoin *mc; - - /* parse JSON reply */ - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* Find out which coin was deemed problematic by the mint */ - mc = NULL; - for (i=0;i<rmh->md->num_melted_coins;i++) - { - if (0 == TALER_amount_cmp (&melt_value_with_fee, - &rmh->md->melted_coins[i].melt_amount_with_fee)) - { - struct TALER_CoinSpendPublicKeyP mc_pub; - - GNUNET_CRYPTO_eddsa_key_get_public (&rmh->md->melted_coins[i].coin_priv.eddsa_priv, - &mc_pub.eddsa_pub); - if (0 == memcmp (&mc_pub, - &coin_pub, - sizeof (struct TALER_CoinSpendPublicKeyP))) - { - mc = &rmh->md->melted_coins[i]; - break; - } - } - } - if (NULL == mc) - { - /* coin not found in our original request */ - GNUNET_break_op (0); - json_decref (history); - return GNUNET_SYSERR; - } - - /* check basic coin properties */ - if (0 != TALER_amount_cmp (&original_value, - &mc->original_value)) - { - /* We disagree on the value of the coin */ - GNUNET_break_op (0); - json_decref (history); - return GNUNET_SYSERR; - } - if (0 != TALER_amount_cmp (&melt_value_with_fee, - &mc->melt_amount_with_fee)) - { - /* We disagree on the value of the coin */ - GNUNET_break_op (0); - json_decref (history); - return GNUNET_SYSERR; - } - - /* verify coin history */ - history = json_object_get (json, - "history"); - if (GNUNET_OK != - TALER_MINT_verify_coin_history_ (original_value.currency, - &coin_pub, - history, - &total)) - { - GNUNET_break_op (0); - json_decref (history); - return GNUNET_SYSERR; - } - json_decref (history); - - /* check if melt operation was really too expensive given history */ - if (GNUNET_OK != - TALER_amount_add (&total, - &total, - &melt_value_with_fee)) - { - /* clearly not OK if our transaction would have caused - the overflow... */ - return GNUNET_OK; - } - - if (0 >= TALER_amount_cmp (&total, - &original_value)) - { - /* transaction should have still fit */ - GNUNET_break (0); - return GNUNET_SYSERR; - } - - /* everything OK, valid proof of double-spending was provided */ - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /refresh/melt request. - * - * @param cls the `struct TALER_MINT_RefreshMeltHandle` - * @param eh the curl request handle - */ -static void -handle_refresh_melt_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_RefreshMeltHandle *rmh = cls; - long response_code; - json_t *json; - uint16_t noreveal_index = TALER_CNC_KAPPA; /* invalid value */ - - rmh->job = NULL; - json = MAC_download_get_result (&rmh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - if (GNUNET_OK != - verify_refresh_melt_signature_ok (rmh, - json, - &noreveal_index)) - { - GNUNET_break_op (0); - response_code = 0; - } - if (NULL != rmh->melt_cb) - { - rmh->melt_cb (rmh->melt_cb_cls, - response_code, - noreveal_index, - json); - rmh->melt_cb = NULL; - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_FORBIDDEN: - /* Double spending; check signatures on transaction history */ - if (GNUNET_OK != - verify_refresh_melt_signature_forbidden (rmh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - break; - case MHD_HTTP_UNAUTHORIZED: - /* Nothing really to verify, mint says one of the signatures is - invalid; assuming we checked them, this should never happen, we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, this should never - happen, we should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - if (NULL != rmh->melt_cb) - rmh->melt_cb (rmh->melt_cb_cls, - response_code, - UINT16_MAX, - json); - json_decref (json); - TALER_MINT_refresh_melt_cancel (rmh); -} - - -/** - * Convert a coin to be melted to the respective JSON encoding. - * - * @param melt_session_hash session hash to use - * @param mc coin to be melted - * @return JSON encoding of the melting request - */ -static json_t * -melted_coin_to_json (const struct GNUNET_HashCode *melt_session_hash, - const struct MeltedCoin *mc) -{ - struct TALER_CoinSpendSignatureP confirm_sig; - struct TALER_RefreshMeltCoinAffirmationPS melt; - - melt.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_COIN_MELT); - melt.purpose.size = htonl (sizeof (struct TALER_RefreshMeltCoinAffirmationPS)); - melt.session_hash = *melt_session_hash; - TALER_amount_hton (&melt.amount_with_fee, - &mc->melt_amount_with_fee); - TALER_amount_hton (&melt.melt_fee, - &mc->fee_melt); - GNUNET_CRYPTO_eddsa_key_get_public (&mc->coin_priv.eddsa_priv, - &melt.coin_pub.eddsa_pub); - GNUNET_CRYPTO_eddsa_sign (&mc->coin_priv.eddsa_priv, - &melt.purpose, - &confirm_sig.eddsa_signature); - return json_pack ("{s:o, s:o, s:o, s:o, s:o}", - "coin_pub", - TALER_json_from_data (&melt.coin_pub, - sizeof (melt.coin_pub)), - "denom_pub", - TALER_json_from_rsa_public_key (mc->pub_key.rsa_public_key), - "denom_sig", - TALER_json_from_rsa_signature (mc->sig.rsa_signature), - "confirm_sig", - TALER_json_from_data (&confirm_sig, - sizeof (confirm_sig)), - "value_with_fee", - TALER_json_from_amount (&mc->melt_amount_with_fee)); -} - - -/** - * Submit a melt request to the mint and get the mint's - * response. - * - * This API is typically used by a wallet. Note that to ensure that - * no money is lost in case of hardware failures, the provided - * argument should have been constructed using - * #TALER_MINT_refresh_prepare and committed to persistent storage - * prior to calling this function. - * - * @param mint the mint handle; the mint must be ready to operate - * @param refresh_data_length size of the @a refresh_data (returned - * in the `res_size` argument from #TALER_MINT_refresh_prepare()) - * @param refresh_data the refresh data as returned from - #TALER_MINT_refresh_prepare()) - * @param melt_cb the callback to call with the result - * @param melt_cb_cls closure for @a melt_cb - * @return a handle for this request; NULL if the argument was invalid. - * In this case, neither callback will be called. - */ -struct TALER_MINT_RefreshMeltHandle * -TALER_MINT_refresh_melt (struct TALER_MINT_Handle *mint, - size_t refresh_data_length, - const char *refresh_data, - TALER_MINT_RefreshMeltCallback melt_cb, - void *melt_cb_cls) -{ - json_t *melt_obj; - json_t *new_denoms; - json_t *melt_coins; - json_t *coin_evs; - json_t *transfer_pubs; - json_t *secret_encs; - json_t *link_encs; - json_t *tmp; - struct TALER_MINT_RefreshMeltHandle *rmh; - CURL *eh; - struct TALER_MINT_Context *ctx; - struct MeltData *md; - unsigned int i; - unsigned int j; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - md = deserialize_melt_data (refresh_data, - refresh_data_length); - if (NULL == md) - { - GNUNET_break (0); - return NULL; - } - - /* build JSON request, each of the 6 arrays first */ - new_denoms = json_array (); - melt_coins = json_array (); - coin_evs = json_array (); - transfer_pubs = json_array (); - secret_encs = json_array (); - link_encs = json_array (); - for (i=0;i<md->num_melted_coins;i++) - { - const struct MeltedCoin *mc = &md->melted_coins[i]; - - /* now melt_coins */ - json_array_append (melt_coins, - melted_coin_to_json (&md->melt_session_hash, - mc)); - } - - /* now transfer_pubs */ - for (j=0;j<TALER_CNC_KAPPA;j++) - { - tmp = json_array (); - for (i=0;i<md->num_melted_coins;i++) - { - const struct MeltedCoin *mc = &md->melted_coins[i]; - struct TALER_TransferPublicKeyP transfer_pub; - - GNUNET_CRYPTO_ecdhe_key_get_public (&mc->transfer_priv[j].ecdhe_priv, - &transfer_pub.ecdhe_pub); - json_array_append (tmp, - TALER_json_from_data (&transfer_pub, - sizeof (transfer_pub))); - } - json_array_append (transfer_pubs, - tmp); - } - - /* now secret_encs */ - for (j=0;j<TALER_CNC_KAPPA;j++) - { - tmp = json_array (); - for (i=0;i<md->num_melted_coins;i++) - { - const struct MeltedCoin *mc = &md->melted_coins[i]; - struct TALER_EncryptedLinkSecretP els; - struct TALER_TransferSecretP trans_sec; - - TALER_link_derive_transfer_secret (&mc->coin_priv, - &mc->transfer_priv[j], - &trans_sec); - GNUNET_assert (GNUNET_OK == - TALER_transfer_encrypt (&md->link_secrets[j], - &trans_sec, - &els)); - json_array_append (tmp, - TALER_json_from_data (&els, - sizeof (els))); - } - json_array_append (secret_encs, - tmp); - } - - /* now new_denoms */ - for (i=0;i<md->num_fresh_coins;i++) - { - json_array_append (new_denoms, - TALER_json_from_rsa_public_key - (md->fresh_pks[i].rsa_public_key)); - } - - /* now link_encs */ - for (j=0;j<TALER_CNC_KAPPA;j++) - { - tmp = json_array (); - for (i=0;i<md->num_fresh_coins;i++) - { - const struct FreshCoin *fc = &md->fresh_coins[j][i]; - struct TALER_RefreshLinkDecrypted rld; - struct TALER_RefreshLinkEncrypted *rle; - char *buf; - size_t buf_len; - - rld.coin_priv = fc->coin_priv; - rld.blinding_key = fc->blinding_key; - rle = TALER_refresh_encrypt (&rld, - &md->link_secrets[j]); - GNUNET_assert (NULL != rle); - buf = TALER_refresh_link_encrypted_encode (rle, - &buf_len); - GNUNET_assert (NULL != buf); - json_array_append (tmp, - TALER_json_from_data (buf, - buf_len)); - GNUNET_free (buf); - GNUNET_free (rle); - } - json_array_append (link_encs, - tmp); - } - - /* now coin_evs */ - for (j=0;j<TALER_CNC_KAPPA;j++) - { - tmp = json_array (); - for (i=0;i<md->num_fresh_coins;i++) - { - const struct FreshCoin *fc = &md->fresh_coins[j][i]; - struct TALER_CoinSpendPublicKeyP coin_pub; - struct GNUNET_HashCode coin_hash; - char *coin_ev; /* blinded message to be signed (in envelope) for each coin */ - size_t coin_ev_size; - - GNUNET_CRYPTO_eddsa_key_get_public (&fc->coin_priv.eddsa_priv, - &coin_pub.eddsa_pub); - GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub, - sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey), - &coin_hash); - coin_ev_size = GNUNET_CRYPTO_rsa_blind (&coin_hash, - fc->blinding_key.rsa_blinding_key, - md->fresh_pks[i].rsa_public_key, - &coin_ev); - json_array_append (tmp, - TALER_json_from_data (coin_ev, - coin_ev_size)); - GNUNET_free (coin_ev); - } - json_array_append (coin_evs, - tmp); - } - - /* finally, assemble main JSON request from constitutent arrays */ - melt_obj = json_pack ("{s:o, s:o, s:o, s:o, s:o, s:o}", - "new_denoms", new_denoms, - "melt_coins", melt_coins, - "coin_evs", coin_evs, - "transfer_pubs", transfer_pubs, - "secret_encs", secret_encs, - "link_encs", link_encs); - - /* and now we can at last begin the actual request handling */ - rmh = GNUNET_new (struct TALER_MINT_RefreshMeltHandle); - rmh->mint = mint; - rmh->melt_cb = melt_cb; - rmh->melt_cb_cls = melt_cb_cls; - rmh->md = md; - rmh->url = MAH_path_to_url (mint, - "/refresh/melt"); - - eh = curl_easy_init (); - GNUNET_assert (NULL != (rmh->json_enc = - json_dumps (melt_obj, - JSON_COMPACT))); - json_decref (melt_obj); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - rmh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDS, - rmh->json_enc)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDSIZE, - strlen (rmh->json_enc))); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &rmh->db)); - ctx = MAH_handle_to_context (mint); - rmh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_refresh_melt_finished, - rmh); - return rmh; -} - - -/** - * Cancel a refresh execute request. This function cannot be used - * on a request handle if either callback was already invoked. - * - * @param rmh the refresh melt handle - */ -void -TALER_MINT_refresh_melt_cancel (struct TALER_MINT_RefreshMeltHandle *rmh) -{ - if (NULL != rmh->job) - { - MAC_job_cancel (rmh->job); - rmh->job = NULL; - } - GNUNET_free_non_null (rmh->db.buf); - free_melt_data (rmh->md); /* does not free 'md' itself */ - GNUNET_free (rmh->md); - GNUNET_free (rmh->url); - GNUNET_free (rmh->json_enc); - GNUNET_free (rmh); -} - - -/* ********************* /refresh/reveal ***************************** */ - - -/** - * @brief A /refresh/reveal Handle - */ -struct TALER_MINT_RefreshRevealHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * JSON encoding of the request to POST. - */ - char *json_enc; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_RefreshRevealCallback reveal_cb; - - /** - * Closure for @e reveal_cb. - */ - void *reveal_cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Actual information about the melt operation. - */ - struct MeltData *md; - - /** - * The index selected by the mint in cut-and-choose to not be revealed. - */ - uint16_t noreveal_index; - -}; - - -/** - * We got a 200 OK response for the /refresh/reveal operation. - * Extract the coin signatures and return them to the caller. - * The signatures we get from the mint is for the blinded value. - * Thus, we first must unblind them and then should verify their - * validity. - * - * If everything checks out, we return the unblinded signatures - * to the application via the callback. - * - * @param rrh operation handle - * @param json reply from the mint - * @param[out] coin_privs array of length `num_fresh_coins`, initialized to contain private keys - * @param[out] sigs array of length `num_fresh_coins`, initialized to cointain RSA signatures - * @return #GNUNET_OK on success, #GNUNET_SYSERR on errors - */ -static int -refresh_reveal_ok (struct TALER_MINT_RefreshRevealHandle *rrh, - json_t *json, - struct TALER_CoinSpendPrivateKeyP *coin_privs, - struct TALER_DenominationSignature *sigs) -{ - unsigned int i; - json_t *jsona; - struct MAJ_Specification spec[] = { - MAJ_spec_json ("ev_sigs", &jsona), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (! json_is_array (jsona)) - { - /* We expected an array of coins */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (rrh->md->num_fresh_coins != json_array_size (jsona)) - { - /* Number of coins generated does not match our expectation */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - for (i=0;i<rrh->md->num_fresh_coins;i++) - { - const struct FreshCoin *fc; - struct TALER_DenominationPublicKey *pk; - json_t *jsonai; - struct GNUNET_CRYPTO_rsa_Signature *blind_sig; - struct GNUNET_CRYPTO_rsa_Signature *sig; - struct TALER_CoinSpendPublicKeyP coin_pub; - struct GNUNET_HashCode coin_hash; - - struct MAJ_Specification spec[] = { - MAJ_spec_rsa_signature ("ev_sig", &blind_sig), - MAJ_spec_end - }; - - fc = &rrh->md->fresh_coins[rrh->noreveal_index][i]; - pk = &rrh->md->fresh_pks[i]; - jsonai = json_array_get (jsona, i); - GNUNET_assert (NULL != jsonai); - - if (GNUNET_OK != - MAJ_parse_json (jsonai, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* unblind the signature */ - sig = GNUNET_CRYPTO_rsa_unblind (blind_sig, - fc->blinding_key.rsa_blinding_key, - pk->rsa_public_key); - GNUNET_CRYPTO_rsa_signature_free (blind_sig); - - /* verify the signature */ - GNUNET_CRYPTO_eddsa_key_get_public (&fc->coin_priv.eddsa_priv, - &coin_pub.eddsa_pub); - GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub, - sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey), - &coin_hash); - - if (GNUNET_OK != - GNUNET_CRYPTO_rsa_verify (&coin_hash, - sig, - pk->rsa_public_key)) - { - GNUNET_break_op (0); - GNUNET_CRYPTO_rsa_signature_free (sig); - return GNUNET_SYSERR; - } - coin_privs[i] = fc->coin_priv; - sigs[i].rsa_signature = sig; - } - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /refresh/reveal request. - * - * @param cls the `struct TALER_MINT_RefreshHandle` - * @param eh the curl request handle - */ -static void -handle_refresh_reveal_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_RefreshRevealHandle *rrh = cls; - long response_code; - json_t *json; - - rrh->job = NULL; - json = MAC_download_get_result (&rrh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - { - struct TALER_CoinSpendPrivateKeyP coin_privs[rrh->md->num_fresh_coins]; - struct TALER_DenominationSignature sigs[rrh->md->num_fresh_coins]; - unsigned int i; - int ret; - - memset (sigs, 0, sizeof (sigs)); - ret = refresh_reveal_ok (rrh, - json, - coin_privs, - sigs); - if (GNUNET_OK != ret) - { - response_code = 0; - } - else - { - rrh->reveal_cb (rrh->reveal_cb_cls, - MHD_HTTP_OK, - rrh->md->num_fresh_coins, - coin_privs, - sigs, - json); - rrh->reveal_cb = NULL; - } - for (i=0;i<rrh->md->num_fresh_coins;i++) - if (NULL != sigs[i].rsa_signature) - GNUNET_CRYPTO_rsa_signature_free (sigs[i].rsa_signature); - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_CONFLICT: - /* Nothing really to verify, mint says our reveal is inconsitent - with our commitment, so either side is buggy; we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - if (NULL != rrh->reveal_cb) - rrh->reveal_cb (rrh->reveal_cb_cls, - response_code, - 0, NULL, NULL, - json); - json_decref (json); - TALER_MINT_refresh_reveal_cancel (rrh); -} - - -/** - * Submit a /refresh/reval request to the mint and get the mint's - * response. - * - * This API is typically used by a wallet. Note that to ensure that - * no money is lost in case of hardware failures, the provided - * arguments should have been committed to persistent storage - * prior to calling this function. - * - * @param mint the mint handle; the mint must be ready to operate - * @param refresh_data_length size of the @a refresh_data (returned - * in the `res_size` argument from #TALER_MINT_refresh_prepare()) - * @param refresh_data the refresh data as returned from - #TALER_MINT_refresh_prepare()) - * @param noreveal_index response from the mint to the - * #TALER_MINT_refresh_melt() invocation - * @param reveal_cb the callback to call with the final result of the - * refresh operation - * @param reveal_cb_cls closure for the above callback - * @return a handle for this request; NULL if the argument was invalid. - * In this case, neither callback will be called. - */ -struct TALER_MINT_RefreshRevealHandle * -TALER_MINT_refresh_reveal (struct TALER_MINT_Handle *mint, - size_t refresh_data_length, - const char *refresh_data, - uint16_t noreveal_index, - TALER_MINT_RefreshRevealCallback reveal_cb, - void *reveal_cb_cls) -{ - struct TALER_MINT_RefreshRevealHandle *rrh; - json_t *transfer_privs; - json_t *reveal_obj; - json_t *tmp; - CURL *eh; - struct TALER_MINT_Context *ctx; - struct MeltData *md; - unsigned int i; - unsigned int j; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - md = deserialize_melt_data (refresh_data, - refresh_data_length); - if (NULL == md) - { - GNUNET_break (0); - return NULL; - } - if (noreveal_index >= TALER_CNC_KAPPA) - { - /* We check this here, as it would be really bad to below just - disclose all the transfer keys. Note that this error should - have been caught way earlier when the mint replied, but maybe - we had some internal corruption that changed the value... */ - GNUNET_break (0); - return NULL; - } - - /* build array of transfer private keys */ - transfer_privs = json_array (); - for (j=0;j<TALER_CNC_KAPPA;j++) - { - if (j == noreveal_index) - { - /* This is crucial: exclude the transfer key for the - noreval index! */ - continue; - } - tmp = json_array (); - for (i=0;i<md->num_melted_coins;i++) - { - const struct MeltedCoin *mc = &md->melted_coins[i]; - - json_array_append (tmp, - TALER_json_from_data (&mc->transfer_priv[j], - sizeof (struct TALER_TransferPrivateKeyP))); - } - json_array_append (transfer_privs, - tmp); - } - - /* build main JSON request */ - reveal_obj = json_pack ("{s:o, s:o}", - "session_hash", - TALER_json_from_data (&md->melt_session_hash, - sizeof (struct GNUNET_HashCode)), - "transfer_privs", - transfer_privs); - - /* finally, we can actually issue the request */ - rrh = GNUNET_new (struct TALER_MINT_RefreshRevealHandle); - rrh->mint = mint; - rrh->noreveal_index = noreveal_index; - rrh->reveal_cb = reveal_cb; - rrh->reveal_cb_cls = reveal_cb_cls; - rrh->md = md; - rrh->url = MAH_path_to_url (rrh->mint, - "/refresh/reveal"); - - eh = curl_easy_init (); - GNUNET_assert (NULL != (rrh->json_enc = - json_dumps (reveal_obj, - JSON_COMPACT))); - json_decref (reveal_obj); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - rrh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDS, - rrh->json_enc)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDSIZE, - strlen (rrh->json_enc))); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &rrh->db)); - ctx = MAH_handle_to_context (rrh->mint); - rrh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_refresh_reveal_finished, - rrh); - return rrh; -} - - -/** - * Cancel a refresh reveal request. This function cannot be used - * on a request handle if the callback was already invoked. - * - * @param rrh the refresh reval handle - */ -void -TALER_MINT_refresh_reveal_cancel (struct TALER_MINT_RefreshRevealHandle *rrh) -{ - if (NULL != rrh->job) - { - MAC_job_cancel (rrh->job); - rrh->job = NULL; - } - GNUNET_free_non_null (rrh->db.buf); - GNUNET_free (rrh->url); - GNUNET_free (rrh->json_enc); - free_melt_data (rrh->md); /* does not free 'md' itself */ - GNUNET_free (rrh->md); - GNUNET_free (rrh); -} - - -/* end of mint_api_refresh.c */ diff --git a/src/mint-lib/mint_api_refresh_link.c b/src/mint-lib/mint_api_refresh_link.c deleted file mode 100644 index dcd2326c..00000000 --- a/src/mint-lib/mint_api_refresh_link.c +++ /dev/null @@ -1,482 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2015, 2016 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_refresh_link.c - * @brief Implementation of the /refresh/link request of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * @brief A /refresh/link Handle - */ -struct TALER_MINT_RefreshLinkHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_RefreshLinkCallback link_cb; - - /** - * Closure for @e cb. - */ - void *link_cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Private key of the coin, required to decode link information. - */ - struct TALER_CoinSpendPrivateKeyP coin_priv; - -}; - - -/** - * Parse the provided linkage data from the "200 OK" response - * for one of the coins. - * - * @param rlh refresh link handle - * @param json json reply with the data for one coin - * @param trans_pub our transfer public key - * @param secret_enc encrypted key to decrypt link data - * @param[out] coin_priv where to return private coin key - * @param[out] sig where to return private coin signature - * @param[out] pub where to return the public key for the coin - * @return #GNUNET_OK on success, #GNUNET_SYSERR on error - */ -static int -parse_refresh_link_coin (const struct TALER_MINT_RefreshLinkHandle *rlh, - json_t *json, - const struct TALER_TransferPublicKeyP *trans_pub, - const struct TALER_EncryptedLinkSecretP *secret_enc, - struct TALER_CoinSpendPrivateKeyP *coin_priv, - struct TALER_DenominationSignature *sig, - struct TALER_DenominationPublicKey *pub) -{ - void *link_enc; - size_t link_enc_size; - struct GNUNET_CRYPTO_rsa_Signature *bsig; - struct GNUNET_CRYPTO_rsa_PublicKey *rpub; - struct MAJ_Specification spec[] = { - MAJ_spec_varsize ("link_enc", &link_enc, &link_enc_size), - MAJ_spec_rsa_public_key ("denom_pub", &rpub), - MAJ_spec_rsa_signature ("ev_sig", &bsig), - MAJ_spec_end - }; - struct TALER_RefreshLinkEncrypted *rle; - struct TALER_RefreshLinkDecrypted *rld; - struct TALER_LinkSecretP secret; - - /* parse reply */ - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* decode and decrypt link data */ - rle = TALER_refresh_link_encrypted_decode (link_enc, - link_enc_size); - if (NULL == rle) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - TALER_link_decrypt_secret2 (secret_enc, - trans_pub, - &rlh->coin_priv, - &secret)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - rld = TALER_refresh_decrypt (rle, - &secret); - if (NULL == rld) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - - /* extract coin and signature */ - *coin_priv = rld->coin_priv; - sig->rsa_signature - = GNUNET_CRYPTO_rsa_unblind (bsig, - rld->blinding_key.rsa_blinding_key, - rpub); - - /* clean up */ - GNUNET_free (rld); - pub->rsa_public_key = GNUNET_CRYPTO_rsa_public_key_dup (rpub); - MAJ_parse_free (spec); - return GNUNET_OK; -} - - -/** - * Parse the provided linkage data from the "200 OK" response - * for one of the coins. - * - * @param[in,out] rlh refresh link handle (callback may be zero'ed out) - * @param json json reply with the data for one coin - * @return #GNUNET_OK on success, #GNUNET_SYSERR on error - */ -static int -parse_refresh_link_ok (struct TALER_MINT_RefreshLinkHandle *rlh, - json_t *json) -{ - unsigned int session; - unsigned int num_coins; - int ret; - - if (! json_is_array (json)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - num_coins = 0; - /* Theoretically, a coin may have been melted repeatedly - into different sessions; so the response is an array - which contains information by melting session. That - array contains another array. However, our API returns - a single 1d array, so we flatten the 2d array that is - returned into a single array. Note that usually a coin - is melted at most once, and so we'll only run this - loop once for 'session=0' in most cases. - - num_coins tracks the size of the 1d array we return, - whilst 'i' and 'session' track the 2d array. */ - for (session=0;session<json_array_size (json); session++) - { - json_t *jsona; - struct MAJ_Specification spec[] = { - MAJ_spec_json ("new_coins", &jsona), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json_array_get (json, - session), - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (! json_is_array (jsona)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - - /* count all coins over all sessions */ - num_coins += json_array_size (jsona); - MAJ_parse_free (spec); - } - /* Now that we know how big the 1d array is, allocate - and fill it. */ - { - unsigned int off_coin; /* index into 1d array */ - unsigned int i; - struct TALER_CoinSpendPrivateKeyP coin_privs[num_coins]; - struct TALER_DenominationSignature sigs[num_coins]; - struct TALER_DenominationPublicKey pubs[num_coins]; - - memset (sigs, 0, sizeof (sigs)); - memset (pubs, 0, sizeof (pubs)); - off_coin = 0; - for (session=0;session<json_array_size (json); session++) - { - json_t *jsona; - struct TALER_TransferPublicKeyP trans_pub; - struct TALER_EncryptedLinkSecretP secret_enc; - struct MAJ_Specification spec[] = { - MAJ_spec_json ("new_coins", &jsona), - MAJ_spec_fixed_auto ("transfer_pub", &trans_pub), - MAJ_spec_fixed_auto ("secret_enc", &secret_enc), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json_array_get (json, - session), - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (! json_is_array (jsona)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - - /* decode all coins */ - for (i=0;i<json_array_size (jsona);i++) - { - if (GNUNET_OK != - parse_refresh_link_coin (rlh, - json_array_get (jsona, - i), - &trans_pub, - &secret_enc, - &coin_privs[i+off_coin], - &sigs[i+off_coin], - &pubs[i+off_coin])) - { - GNUNET_break_op (0); - break; - } - } - /* check if we really got all, then invoke callback */ - off_coin += i; - if (i != json_array_size (jsona)) - { - GNUNET_break_op (0); - ret = GNUNET_SYSERR; - MAJ_parse_free (spec); - break; - } - MAJ_parse_free (spec); - } /* end of for (session) */ - - if (off_coin == num_coins) - { - rlh->link_cb (rlh->link_cb_cls, - MHD_HTTP_OK, - num_coins, - coin_privs, - sigs, - pubs, - json); - rlh->link_cb = NULL; - ret = GNUNET_OK; - } - else - { - GNUNET_break_op (0); - ret = GNUNET_SYSERR; - } - - /* clean up */ - for (i=0;i<off_coin;i++) - { - if (NULL != sigs[i].rsa_signature) - GNUNET_CRYPTO_rsa_signature_free (sigs[i].rsa_signature); - if (NULL != pubs[i].rsa_public_key) - GNUNET_CRYPTO_rsa_public_key_free (pubs[i].rsa_public_key); - } - } - return ret; -} - - -/** - * Function called when we're done processing the - * HTTP /refresh/link request. - * - * @param cls the `struct TALER_MINT_RefreshLinkHandle` - * @param eh the curl request handle - */ -static void -handle_refresh_link_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_RefreshLinkHandle *rlh = cls; - long response_code; - json_t *json; - - rlh->job = NULL; - json = MAC_download_get_result (&rlh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - if (GNUNET_OK != - parse_refresh_link_ok (rlh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, mint says this coin was not melted; we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - if (NULL != rlh->link_cb) - rlh->link_cb (rlh->link_cb_cls, - response_code, - 0, NULL, NULL, NULL, - json); - json_decref (json); - TALER_MINT_refresh_link_cancel (rlh); -} - - -/** - * Submit a link request to the mint and get the mint's response. - * - * This API is typically not used by anyone, it is more a threat - * against those trying to receive a funds transfer by abusing the - * /refresh protocol. - * - * @param mint the mint handle; the mint must be ready to operate - * @param coin_priv private key to request link data for - * @param link_cb the callback to call with the useful result of the - * refresh operation the @a coin_priv was involved in (if any) - * @param link_cb_cls closure for @a link_cb - * @return a handle for this request - */ -struct TALER_MINT_RefreshLinkHandle * -TALER_MINT_refresh_link (struct TALER_MINT_Handle *mint, - const struct TALER_CoinSpendPrivateKeyP *coin_priv, - TALER_MINT_RefreshLinkCallback link_cb, - void *link_cb_cls) -{ - struct TALER_MINT_RefreshLinkHandle *rlh; - CURL *eh; - struct TALER_MINT_Context *ctx; - struct TALER_CoinSpendPublicKeyP coin_pub; - char *pub_str; - char *arg_str; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - - GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv, - &coin_pub.eddsa_pub); - pub_str = GNUNET_STRINGS_data_to_string_alloc (&coin_pub, - sizeof (struct TALER_CoinSpendPublicKeyP)); - GNUNET_asprintf (&arg_str, - "/refresh/link?coin_pub=%s", - pub_str); - GNUNET_free (pub_str); - - rlh = GNUNET_new (struct TALER_MINT_RefreshLinkHandle); - rlh->mint = mint; - rlh->link_cb = link_cb; - rlh->link_cb_cls = link_cb_cls; - rlh->coin_priv = *coin_priv; - rlh->url = MAH_path_to_url (mint, arg_str); - GNUNET_free (arg_str); - - eh = curl_easy_init (); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - rlh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &rlh->db)); - ctx = MAH_handle_to_context (mint); - rlh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_refresh_link_finished, - rlh); - return rlh; -} - - -/** - * Cancel a refresh link request. This function cannot be used - * on a request handle if the callback was already invoked. - * - * @param rlh the refresh link handle - */ -void -TALER_MINT_refresh_link_cancel (struct TALER_MINT_RefreshLinkHandle *rlh) -{ - if (NULL != rlh->job) - { - MAC_job_cancel (rlh->job); - rlh->job = NULL; - } - GNUNET_free_non_null (rlh->db.buf); - GNUNET_free (rlh->url); - GNUNET_free (rlh); -} - - -/* end of mint_api_refresh_link.c */ diff --git a/src/mint-lib/mint_api_reserve.c b/src/mint-lib/mint_api_reserve.c deleted file mode 100644 index 1f8140cf..00000000 --- a/src/mint-lib/mint_api_reserve.c +++ /dev/null @@ -1,930 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_reserve.c - * @brief Implementation of the /reserve requests of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/* ********************** /reserve/status ********************** */ - -/** - * @brief A Withdraw Status Handle - */ -struct TALER_MINT_ReserveStatusHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_ReserveStatusResultCallback cb; - - /** - * Public key of the reserve we are querying. - */ - struct TALER_ReservePublicKeyP reserve_pub; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - -}; - - -/** - * Parse history given in JSON format and return it in binary - * format. - * - * @param[in] history JSON array with the history - * @param reserve_pub public key of the reserve to inspect - * @param currency currency we expect the balance to be in - * @param[out] balance final balance - * @param history_length number of entries in @a history - * @param[out] rhistory array of length @a history_length, set to the - * parsed history entries - * @return #GNUNET_OK if history was valid and @a rhistory and @a balance - * were set, - * #GNUNET_SYSERR if there was a protocol violation in @a history - */ -static int -parse_reserve_history (json_t *history, - const struct TALER_ReservePublicKeyP *reserve_pub, - const char *currency, - struct TALER_Amount *balance, - unsigned int history_length, - struct TALER_MINT_ReserveHistory *rhistory) -{ - struct GNUNET_HashCode uuid[history_length]; - unsigned int uuid_off; - struct TALER_Amount total_in; - struct TALER_Amount total_out; - size_t off; - - TALER_amount_get_zero (currency, - &total_in); - TALER_amount_get_zero (currency, - &total_out); - uuid_off = 0; - for (off=0;off<history_length;off++) - { - json_t *transaction; - struct TALER_Amount amount; - const char *type; - struct MAJ_Specification hist_spec[] = { - MAJ_spec_string ("type", &type), - MAJ_spec_amount ("amount", - &amount), - /* 'wire' and 'signature' are optional depending on 'type'! */ - MAJ_spec_end - }; - - transaction = json_array_get (history, - off); - if (GNUNET_OK != - MAJ_parse_json (transaction, - hist_spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - rhistory[off].amount = amount; - - if (0 == strcasecmp (type, - "DEPOSIT")) - { - json_t *wire; - - rhistory[off].type = TALER_MINT_RTT_DEPOSIT; - if (GNUNET_OK != - TALER_amount_add (&total_in, - &total_in, - &amount)) - { - /* overflow in history already!? inconceivable! Bad mint! */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - wire = json_object_get (transaction, - "wire"); - /* check 'wire' is a JSON object (no need to check wireformat, - but we do at least expect "some" JSON object here) */ - if ( (NULL == wire) || - (! json_is_object (wire)) ) - { - /* not even a JSON 'wire' specification, not acceptable */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - rhistory[off].details.wire_in_details = wire; - /* end type==DEPOSIT */ - } - else if (0 == strcasecmp (type, - "WITHDRAW")) - { - struct TALER_ReserveSignatureP sig; - struct TALER_WithdrawRequestPS withdraw_purpose; - struct TALER_Amount amount_from_purpose; - struct MAJ_Specification withdraw_spec[] = { - MAJ_spec_fixed_auto ("signature", - &sig), - MAJ_spec_fixed_auto ("details", - &withdraw_purpose), - MAJ_spec_end - }; - unsigned int i; - - rhistory[off].type = TALER_MINT_RTT_WITHDRAWAL; - if (GNUNET_OK != - MAJ_parse_json (transaction, - withdraw_spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - /* Check that the signature is a valid withdraw request */ - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_RESERVE_WITHDRAW, - &withdraw_purpose.purpose, - &sig.eddsa_signature, - &reserve_pub->eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - TALER_amount_ntoh (&amount_from_purpose, - &withdraw_purpose.amount_with_fee); - if (0 != TALER_amount_cmp (&amount, - &amount_from_purpose)) - { - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - rhistory[off].details.out_authorization_sig = json_object_get (transaction, - "signature"); - /* Check check that the same withdraw transaction - isn't listed twice by the mint. We use the - "uuid" array to remember the hashes of all - purposes, and compare the hashes to find - duplicates. */ - GNUNET_CRYPTO_hash (&withdraw_purpose, - ntohl (withdraw_purpose.purpose.size), - &uuid[uuid_off]); - for (i=0;i<uuid_off;i++) - { - if (0 == memcmp (&uuid[uuid_off], - &uuid[i], - sizeof (struct GNUNET_HashCode))) - { - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - } - uuid_off++; - - if (GNUNET_OK != - TALER_amount_add (&total_out, - &total_out, - &amount)) - { - /* overflow in history already!? inconceivable! Bad mint! */ - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - /* end type==WITHDRAW */ - } - else - { - /* unexpected 'type', protocol incompatibility, complain! */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - } - - /* check balance = total_in - total_out < withdraw-amount */ - if (GNUNET_SYSERR == - TALER_amount_subtract (balance, - &total_in, - &total_out)) - { - /* total_in < total_out, why did the mint ever allow this!? */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /reserve/status request. - * - * @param cls the `struct TALER_MINT_ReserveStatusHandle` - * @param eh curl handle of the request that finished - */ -static void -handle_reserve_status_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_ReserveStatusHandle *wsh = cls; - long response_code; - json_t *json; - - wsh->job = NULL; - json = MAC_download_get_result (&wsh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - { - /* TODO: move into separate function... */ - json_t *history; - unsigned int len; - struct TALER_Amount balance; - struct TALER_Amount balance_from_history; - struct MAJ_Specification spec[] = { - MAJ_spec_amount ("balance", &balance), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - history = json_object_get (json, - "history"); - if (NULL == history) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - len = json_array_size (history); - { - struct TALER_MINT_ReserveHistory rhistory[len]; - - if (GNUNET_OK != - parse_reserve_history (history, - &wsh->reserve_pub, - balance.currency, - &balance_from_history, - len, - rhistory)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - if (0 != - TALER_amount_cmp (&balance_from_history, - &balance)) - { - /* mint cannot add up balances!? */ - GNUNET_break_op (0); - response_code = 0; - break; - } - wsh->cb (wsh->cb_cls, - response_code, - json, - &balance, - len, - rhistory); - wsh->cb = NULL; - } - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, this should never - happen, we should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - if (NULL != wsh->cb) - wsh->cb (wsh->cb_cls, - response_code, - json, - NULL, - 0, NULL); - json_decref (json); - TALER_MINT_reserve_status_cancel (wsh); -} - - -/** - * Submit a request to obtain the transaction history of a reserve - * from the mint. Note that while we return the full response to the - * caller for further processing, we do already verify that the - * response is well-formed (i.e. that signatures included in the - * response are all valid and add up to the balance). If the mint's - * reply is not well-formed, we return an HTTP status code of zero to - * @a cb. - * - * @param mint the mint handle; the mint must be ready to operate - * @param reserve_pub public key of the reserve to inspect - * @param cb the callback to call when a reply for this request is available - * @param cb_cls closure for the above callback - * @return a handle for this request; NULL if the inputs are invalid (i.e. - * signatures fail to verify). In this case, the callback is not called. - */ -struct TALER_MINT_ReserveStatusHandle * -TALER_MINT_reserve_status (struct TALER_MINT_Handle *mint, - const struct TALER_ReservePublicKeyP *reserve_pub, - TALER_MINT_ReserveStatusResultCallback cb, - void *cb_cls) -{ - struct TALER_MINT_ReserveStatusHandle *wsh; - struct TALER_MINT_Context *ctx; - CURL *eh; - char *pub_str; - char *arg_str; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - pub_str = GNUNET_STRINGS_data_to_string_alloc (reserve_pub, - sizeof (struct TALER_ReservePublicKeyP)); - GNUNET_asprintf (&arg_str, - "/reserve/status?reserve_pub=%s", - pub_str); - GNUNET_free (pub_str); - wsh = GNUNET_new (struct TALER_MINT_ReserveStatusHandle); - wsh->mint = mint; - wsh->cb = cb; - wsh->cb_cls = cb_cls; - wsh->reserve_pub = *reserve_pub; - wsh->url = MAH_path_to_url (mint, - arg_str); - GNUNET_free (arg_str); - - eh = curl_easy_init (); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - wsh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &wsh->db)); - ctx = MAH_handle_to_context (mint); - wsh->job = MAC_job_add (ctx, - eh, - GNUNET_NO, - &handle_reserve_status_finished, - wsh); - return wsh; -} - - -/** - * Cancel a withdraw status request. This function cannot be used - * on a request handle if a response is already served for it. - * - * @param wsh the withdraw status request handle - */ -void -TALER_MINT_reserve_status_cancel (struct TALER_MINT_ReserveStatusHandle *wsh) -{ - if (NULL != wsh->job) - { - MAC_job_cancel (wsh->job); - wsh->job = NULL; - } - GNUNET_free_non_null (wsh->db.buf); - GNUNET_free (wsh->url); - GNUNET_free (wsh); -} - - -/* ********************** /reserve/withdraw ********************** */ - -/** - * @brief A Withdraw Sign Handle - */ -struct TALER_MINT_ReserveWithdrawHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * JSON encoding of the request to POST. - */ - char *json_enc; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_ReserveWithdrawResultCallback cb; - - /** - * Key used to blind the value. - */ - const struct TALER_DenominationBlindingKey *blinding_key; - - /** - * Denomination key we are withdrawing. - */ - const struct TALER_MINT_DenomPublicKey *pk; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Hash of the public key of the coin we are signing. - */ - struct GNUNET_HashCode c_hash; - - /** - * Public key of the reserve we are withdrawing from. - */ - struct TALER_ReservePublicKeyP reserve_pub; - -}; - - -/** - * We got a 200 OK response for the /reserve/withdraw operation. - * Extract the coin's signature and return it to the caller. - * The signature we get from the mint is for the blinded value. - * Thus, we first must unblind it and then should verify its - * validity against our coin's hash. - * - * If everything checks out, we return the unblinded signature - * to the application via the callback. - * - * @param wsh operation handle - * @param json reply from the mint - * @return #GNUNET_OK on success, #GNUNET_SYSERR on errors - */ -static int -reserve_withdraw_ok (struct TALER_MINT_ReserveWithdrawHandle *wsh, - json_t *json) -{ - struct GNUNET_CRYPTO_rsa_Signature *blind_sig; - struct GNUNET_CRYPTO_rsa_Signature *sig; - struct TALER_DenominationSignature dsig; - struct MAJ_Specification spec[] = { - MAJ_spec_rsa_signature ("ev_sig", &blind_sig), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - sig = GNUNET_CRYPTO_rsa_unblind (blind_sig, - wsh->blinding_key->rsa_blinding_key, - wsh->pk->key.rsa_public_key); - GNUNET_CRYPTO_rsa_signature_free (blind_sig); - if (GNUNET_OK != - GNUNET_CRYPTO_rsa_verify (&wsh->c_hash, - sig, - wsh->pk->key.rsa_public_key)) - { - GNUNET_break_op (0); - GNUNET_CRYPTO_rsa_signature_free (sig); - return GNUNET_SYSERR; - } - /* signature is valid, return it to the application */ - dsig.rsa_signature = sig; - wsh->cb (wsh->cb_cls, - MHD_HTTP_OK, - &dsig, - json); - /* make sure callback isn't called again after return */ - wsh->cb = NULL; - GNUNET_CRYPTO_rsa_signature_free (sig); - return GNUNET_OK; -} - - -/** - * We got a 402 PAYMENT REQUIRED response for the /reserve/withdraw operation. - * Check the signatures on the withdraw transactions in the provided - * history and that the balances add up. We don't do anything directly - * with the information, as the JSON will be returned to the application. - * However, our job is ensuring that the mint followed the protocol, and - * this in particular means checking all of the signatures in the history. - * - * @param wsh operation handle - * @param json reply from the mint - * @return #GNUNET_OK on success, #GNUNET_SYSERR on errors - */ -static int -reserve_withdraw_payment_required (struct TALER_MINT_ReserveWithdrawHandle *wsh, - json_t *json) -{ - struct TALER_Amount balance; - struct TALER_Amount balance_from_history; - struct TALER_Amount requested_amount; - json_t *history; - size_t len; - struct MAJ_Specification spec[] = { - MAJ_spec_amount ("balance", &balance), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - history = json_object_get (json, - "history"); - if (NULL == history) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* go over transaction history and compute - total incoming and outgoing amounts */ - len = json_array_size (history); - { - struct TALER_MINT_ReserveHistory rhistory[len]; - - if (GNUNET_OK != - parse_reserve_history (history, - &wsh->reserve_pub, - balance.currency, - &balance_from_history, - len, - rhistory)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - } - - if (0 != - TALER_amount_cmp (&balance_from_history, - &balance)) - { - /* mint cannot add up balances!? */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - /* Compute how much we expected to charge to the reserve */ - if (GNUNET_OK != - TALER_amount_add (&requested_amount, - &wsh->pk->value, - &wsh->pk->fee_withdraw)) - { - /* Overflow here? Very strange, our CPU must be fried... */ - GNUNET_break (0); - return GNUNET_SYSERR; - } - /* Check that funds were really insufficient */ - if (0 >= TALER_amount_cmp (&requested_amount, - &balance)) - { - /* Requested amount is smaller or equal to reported balance, - so this should not have failed. */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /reserve/withdraw request. - * - * @param cls the `struct TALER_MINT_ReserveWithdrawHandle` - * @param eh curl handle of the request that finished - */ -static void -handle_reserve_withdraw_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_ReserveWithdrawHandle *wsh = cls; - long response_code; - json_t *json; - - wsh->job = NULL; - json = MAC_download_get_result (&wsh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - if (GNUNET_OK != - reserve_withdraw_ok (wsh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_PAYMENT_REQUIRED: - /* The mint says that the reserve has insufficient funds; - check the signatures in the history... */ - if (GNUNET_OK != - reserve_withdraw_payment_required (wsh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - break; - case MHD_HTTP_UNAUTHORIZED: - GNUNET_break (0); - /* Nothing really to verify, mint says one of the signatures is - invalid; as we checked them, this should never happen, we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, the mint basically just says - that it doesn't know this reserve. Can happen if we - query before the wire transfer went through. - We should simply pass the JSON reply to the application. */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - if (NULL != wsh->cb) - wsh->cb (wsh->cb_cls, - response_code, - NULL, - json); - json_decref (json); - TALER_MINT_reserve_withdraw_cancel (wsh); -} - - -/** - * Withdraw a coin from the mint using a /reserve/withdraw request. Note - * that to ensure that no money is lost in case of hardware failures, - * the caller must have committed (most of) the arguments to disk - * before calling, and be ready to repeat the request with the same - * arguments in case of failures. - * - * @param mint the mint handle; the mint must be ready to operate - * @param pk kind of coin to create - * @param reserve_priv private key of the reserve to withdraw from - * @param coin_priv where to store the coin's private key, - * caller must have committed this value to disk before the call (with @a pk) - * @param blinding_key where to store the coin's blinding key - * caller must have committed this value to disk before the call (with @a pk) - * @param res_cb the callback to call when the final result for this request is available - * @param res_cb_cls closure for the above callback - * @return #GNUNET_OK on success, #GNUNET_SYSERR - * if the inputs are invalid (i.e. denomination key not with this mint). - * In this case, the callback is not called. - */ -struct TALER_MINT_ReserveWithdrawHandle * -TALER_MINT_reserve_withdraw (struct TALER_MINT_Handle *mint, - const struct TALER_MINT_DenomPublicKey *pk, - const struct TALER_ReservePrivateKeyP *reserve_priv, - const struct TALER_CoinSpendPrivateKeyP *coin_priv, - const struct TALER_DenominationBlindingKey *blinding_key, - TALER_MINT_ReserveWithdrawResultCallback res_cb, - void *res_cb_cls) -{ - struct TALER_MINT_ReserveWithdrawHandle *wsh; - struct TALER_WithdrawRequestPS req; - struct TALER_ReserveSignatureP reserve_sig; - struct TALER_CoinSpendPublicKeyP coin_pub; - struct TALER_MINT_Context *ctx; - struct TALER_Amount amount_with_fee; - char *coin_ev; - size_t coin_ev_size; - json_t *withdraw_obj; - CURL *eh; - - wsh = GNUNET_new (struct TALER_MINT_ReserveWithdrawHandle); - wsh->mint = mint; - wsh->cb = res_cb; - wsh->cb_cls = res_cb_cls; - wsh->pk = pk; - - GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv, - &coin_pub.eddsa_pub); - GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub, - sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey), - &wsh->c_hash); - coin_ev_size = GNUNET_CRYPTO_rsa_blind (&wsh->c_hash, - blinding_key->rsa_blinding_key, - pk->key.rsa_public_key, - &coin_ev); - GNUNET_CRYPTO_eddsa_key_get_public (&reserve_priv->eddsa_priv, - &wsh->reserve_pub.eddsa_pub); - req.purpose.size = htonl (sizeof (struct TALER_WithdrawRequestPS)); - req.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_RESERVE_WITHDRAW); - req.reserve_pub = wsh->reserve_pub; - if (GNUNET_OK != - TALER_amount_add (&amount_with_fee, - &pk->fee_withdraw, - &pk->value)) - { - /* mint gave us denomination keys that overflow like this!? */ - GNUNET_break_op (0); - GNUNET_free (coin_ev); - GNUNET_free (wsh); - return NULL; - } - TALER_amount_hton (&req.amount_with_fee, - &amount_with_fee); - TALER_amount_hton (&req.withdraw_fee, - &pk->fee_withdraw); - GNUNET_CRYPTO_rsa_public_key_hash (pk->key.rsa_public_key, - &req.h_denomination_pub); - GNUNET_CRYPTO_hash (coin_ev, - coin_ev_size, - &req.h_coin_envelope); - GNUNET_assert (GNUNET_OK == - GNUNET_CRYPTO_eddsa_sign (&reserve_priv->eddsa_priv, - &req.purpose, - &reserve_sig.eddsa_signature)); - withdraw_obj = json_pack ("{s:o, s:o," /* denom_pub and coin_ev */ - " s:o, s:o}",/* reserve_pub and reserve_sig */ - "denom_pub", TALER_json_from_rsa_public_key (pk->key.rsa_public_key), - "coin_ev", TALER_json_from_data (coin_ev, - coin_ev_size), - "reserve_pub", TALER_json_from_data (&wsh->reserve_pub, - sizeof (struct TALER_ReservePublicKeyP)), - "reserve_sig", TALER_json_from_data (&reserve_sig, - sizeof (reserve_sig))); - GNUNET_free (coin_ev); - - wsh->blinding_key = blinding_key; - wsh->url = MAH_path_to_url (mint, "/reserve/withdraw"); - - eh = curl_easy_init (); - GNUNET_assert (NULL != (wsh->json_enc = - json_dumps (withdraw_obj, - JSON_COMPACT))); - json_decref (withdraw_obj); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - wsh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDS, - wsh->json_enc)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDSIZE, - strlen (wsh->json_enc))); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &wsh->db)); - ctx = MAH_handle_to_context (mint); - wsh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_reserve_withdraw_finished, - wsh); - return wsh; -} - - -/** - * Cancel a withdraw status request. This function cannot be used - * on a request handle if a response is already served for it. - * - * @param sign the withdraw sign request handle - */ -void -TALER_MINT_reserve_withdraw_cancel (struct TALER_MINT_ReserveWithdrawHandle *sign) -{ - if (NULL != sign->job) - { - MAC_job_cancel (sign->job); - sign->job = NULL; - } - GNUNET_free_non_null (sign->db.buf); - GNUNET_free (sign->url); - GNUNET_free (sign->json_enc); - GNUNET_free (sign); -} - - -/* end of mint_api_reserve.c */ diff --git a/src/mint-lib/mint_api_wire.c b/src/mint-lib/mint_api_wire.c deleted file mode 100644 index 0947354a..00000000 --- a/src/mint-lib/mint_api_wire.c +++ /dev/null @@ -1,620 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_wire.c - * @brief Implementation of the /wire request of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_common.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * @brief A Wire Handle - */ -struct TALER_MINT_WireHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_WireResultCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Set to the "methods" JSON array returned by the - * /wire request. - */ - json_t *methods; - - /** - * Current iteration offset in the @e methods array. - */ - unsigned int methods_off; - -}; - - -/** - * Verify that the signature on the "200 OK" response - * for /wire/sepa from the mint is valid. - * - * @param wh wire handle - * @param json json reply with the signature - * @return #GNUNET_SYSERR if @a json is invalid, - * #GNUNET_NO if the method is unknown, - * #GNUNET_OK if the json is valid - */ -static int -verify_wire_sepa_signature_ok (const struct TALER_MINT_WireHandle *wh, - json_t *json) -{ - struct TALER_MasterSignatureP mint_sig; - struct TALER_MasterWireSepaDetailsPS mp; - const char *receiver_name; - const char *iban; - const char *bic; - const struct TALER_MINT_Keys *key_state; - struct GNUNET_HashContext *hc; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("sig", &mint_sig), - MAJ_spec_string ("receiver_name", &receiver_name), - MAJ_spec_string ("iban", &iban), - MAJ_spec_string ("bic", &bic), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - key_state = TALER_MINT_get_keys (wh->mint); - mp.purpose.purpose = htonl (TALER_SIGNATURE_MASTER_SEPA_DETAILS); - mp.purpose.size = htonl (sizeof (struct TALER_MasterWireSepaDetailsPS)); - hc = GNUNET_CRYPTO_hash_context_start (); - GNUNET_CRYPTO_hash_context_read (hc, - receiver_name, - strlen (receiver_name) + 1); - GNUNET_CRYPTO_hash_context_read (hc, - iban, - strlen (iban) + 1); - GNUNET_CRYPTO_hash_context_read (hc, - bic, - strlen (bic) + 1); - GNUNET_CRYPTO_hash_context_finish (hc, - &mp.h_sepa_details); - - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MASTER_SEPA_DETAILS, - &mp.purpose, - &mint_sig.eddsa_signature, - &key_state->master_pub.eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - MAJ_parse_free (spec); - return GNUNET_OK; -} - - -/** - * Verify that the signature on the "200 OK" response - * for /wire/METHOD from the mint is valid. - * - * @param wh wire handle with key material - * @param method method to verify the reply for - * @param json json reply with the signature - * @return #GNUNET_SYSERR if @a json is invalid, - * #GNUNET_NO if the method is unknown, - * #GNUNET_OK if the json is valid - */ -static int -verify_wire_method_signature_ok (const struct TALER_MINT_WireHandle *wh, - const char *method, - json_t *json) -{ - struct - { - /** - * Name fo the method. - */ - const char *method; - - /** - * Handler to invoke to verify signature. - * - * @param wh wire handle with key material - * @param json json reply with signature to verify - */ - int (*handler)(const struct TALER_MINT_WireHandle *wh, - json_t *json); - } handlers[] = { - { "sepa", &verify_wire_sepa_signature_ok }, - { NULL, NULL } - }; - unsigned int i; - - for (i=0;NULL != handlers[i].method; i++) - if (0 == strcasecmp (handlers[i].method, - method)) - return handlers[i].handler (wh, - json); - GNUNET_log (GNUNET_ERROR_TYPE_INFO, - "Wire transfer method `%s' not supported\n", - method); - return GNUNET_NO; -} - - -/** - * Perform the next /wire/method request or signal - * the end of the iteration. - * - * @param wh the wire handle - * @return a handle for this request - */ -static void -request_wire_method (struct TALER_MINT_WireHandle *wh); - - -/** - * Function called when we're done processing the - * HTTP /wire/METHOD request. - * - * @param cls the `struct TALER_MINT_WireHandle` - * @param eh the curl request handle - */ -static void -handle_wire_method_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_WireHandle *wh = cls; - long response_code; - json_t *json; - - wh->job = NULL; - json = MAC_download_get_result (&wh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - { - const char *method; - - method = json_string_value (json_array_get (wh->methods, - wh->methods_off - 1)); - if (GNUNET_OK != - verify_wire_method_signature_ok (wh, - method, - json)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - break; - } - case MHD_HTTP_FOUND: - /* /wire/test returns a 302 redirect, we should just give - this information back to the callback below */ - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, this should never - happen, we should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - if (0 == response_code) - { - /* signal end of iteration */ - wh->cb (wh->cb_cls, - 0, - NULL, - NULL); - json_decref (json); - TALER_MINT_wire_cancel (wh); - return; - } - /* pass on successful reply */ - wh->cb (wh->cb_cls, - response_code, - json_string_value (json_array_get (wh->methods, - wh->methods_off-1)), - json); - /* trigger request for the next /wire/method */ - request_wire_method (wh); -} - - -/** - * Perform the next /wire/method request or signal - * the end of the iteration. - * - * @param wh the wire handle - * @return a handle for this request - */ -static void -request_wire_method (struct TALER_MINT_WireHandle *wh) -{ - struct TALER_MINT_Context *ctx; - CURL *eh; - char *path; - - if (json_array_size (wh->methods) <= wh->methods_off) - { - /* we are done, signal end of iteration */ - wh->cb (wh->cb_cls, - 0, - NULL, - NULL); - TALER_MINT_wire_cancel (wh); - return; - } - GNUNET_free_non_null (wh->db.buf); - wh->db.buf = NULL; - wh->db.buf_size = 0; - wh->db.eno = 0; - GNUNET_free_non_null (wh->url); - GNUNET_asprintf (&path, - "/wire/%s", - json_string_value (json_array_get (wh->methods, - wh->methods_off++))); - wh->url = MAH_path_to_url (wh->mint, - path); - GNUNET_free (path); - - eh = curl_easy_init (); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - wh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &wh->db)); - /* The default is 'disabled', but let's be sure */ - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_FOLLOWLOCATION, - (long) 0)); - ctx = MAH_handle_to_context (wh->mint); - wh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_wire_method_finished, - wh); - TALER_MINT_perform (ctx); -} - - -/** - * Verify that the signature on the "200 OK" response - * for /wire from the mint is valid. - * - * @param wh wire handle - * @param json json reply with the signature - * @return NULL if @a json is invalid, otherwise the - * "methods" array (with an RC of 1) - */ -static json_t * -verify_wire_signature_ok (const struct TALER_MINT_WireHandle *wh, - json_t *json) -{ - struct TALER_MintSignatureP mint_sig; - struct TALER_MintPublicKeyP mint_pub; - struct TALER_MintWireSupportMethodsPS mp; - json_t *methods; - const struct TALER_MINT_Keys *key_state; - struct GNUNET_HashContext *hc; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("sig", &mint_sig), - MAJ_spec_fixed_auto ("pub", &mint_pub), - MAJ_spec_json ("methods", &methods), - MAJ_spec_end - }; - unsigned int i; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return NULL; - } - if (! json_is_array (methods)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return NULL; - } - - key_state = TALER_MINT_get_keys (wh->mint); - if (GNUNET_OK != - TALER_MINT_test_signing_key (key_state, - &mint_pub)) - { - GNUNET_break_op (0); - return NULL; - } - hc = GNUNET_CRYPTO_hash_context_start (); - for (i=0;i<json_array_size (methods);i++) - { - const json_t *element = json_array_get (methods, i); - const char *method; - - if (! json_is_string (element)) - { - GNUNET_CRYPTO_hash_context_abort (hc); - GNUNET_break_op (0); - MAJ_parse_free (spec); - return NULL; - } - method = json_string_value (element); - GNUNET_CRYPTO_hash_context_read (hc, - method, - strlen (method) + 1); - } - mp.purpose.purpose = htonl (TALER_SIGNATURE_MINT_WIRE_TYPES); - mp.purpose.size = htonl (sizeof (struct TALER_MintWireSupportMethodsPS)); - GNUNET_CRYPTO_hash_context_finish (hc, - &mp.h_wire_types); - - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MINT_WIRE_TYPES, - &mp.purpose, - &mint_sig.eddsa_signature, - &mint_pub.eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return NULL; - } - return methods; -} - - -/** - * Function called when we're done processing the - * HTTP /wire request. - * - * @param cls the `struct TALER_MINT_WireHandle` - * @param eh the curl request handle - */ -static void -handle_wire_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_WireHandle *wh = cls; - long response_code; - json_t *json; - - wh->job = NULL; - json = MAC_download_get_result (&wh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - { - json_t *methods; - - if (NULL == - (methods = verify_wire_signature_ok (wh, - json))) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - wh->methods = methods; - request_wire_method (wh); - return; - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Nothing really to verify, this should never - happen, we should pass the JSON reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - if (0 != response_code) - { - /* pass on successful reply */ - wh->cb (wh->cb_cls, - response_code, - NULL, - json); - } - /* signal end of iteration */ - wh->cb (wh->cb_cls, - 0, - NULL, - NULL); - if (NULL != json) - json_decref (json); - TALER_MINT_wire_cancel (wh); -} - - -/** - * Obtain information about a mint's wire instructions. - * A mint may provide wire instructions for creating - * a reserve. The wire instructions also indicate - * which wire formats merchants may use with the mint. - * This API is typically used by a wallet for wiring - * funds, and possibly by a merchant to determine - * supported wire formats. - * - * Note that while we return the (main) response verbatim to the - * caller for further processing, we do already verify that the - * response is well-formed (i.e. that signatures included in the - * response are all valid). If the mint's reply is not well-formed, - * we return an HTTP status code of zero to @a cb. - * - * @param mint the mint handle; the mint must be ready to operate - * @param wire_cb the callback to call when a reply for this request is available - * @param wire_cb_cls closure for the above callback - * @return a handle for this request - */ -struct TALER_MINT_WireHandle * -TALER_MINT_wire (struct TALER_MINT_Handle *mint, - TALER_MINT_WireResultCallback wire_cb, - void *wire_cb_cls) -{ - struct TALER_MINT_WireHandle *wh; - struct TALER_MINT_Context *ctx; - CURL *eh; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - wh = GNUNET_new (struct TALER_MINT_WireHandle); - wh->mint = mint; - wh->cb = wire_cb; - wh->cb_cls = wire_cb_cls; - wh->url = MAH_path_to_url (mint, "/wire"); - - eh = curl_easy_init (); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - wh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &wh->db)); - ctx = MAH_handle_to_context (mint); - wh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_wire_finished, - wh); - return wh; -} - - -/** - * Cancel a wire information request. This function cannot be used - * on a request handle if a response is already served for it. - * - * @param wh the wire information request handle - */ -void -TALER_MINT_wire_cancel (struct TALER_MINT_WireHandle *wh) -{ - if (NULL != wh->job) - { - MAC_job_cancel (wh->job); - wh->job = NULL; - } - if (NULL != wh->methods) - { - json_decref (wh->methods); - wh->methods = NULL; - } - GNUNET_free_non_null (wh->db.buf); - GNUNET_free (wh->url); - GNUNET_free (wh); -} - - -/* end of mint_api_wire.c */ diff --git a/src/mint-lib/mint_api_wire_deposits.c b/src/mint-lib/mint_api_wire_deposits.c deleted file mode 100644 index f71c5b69..00000000 --- a/src/mint-lib/mint_api_wire_deposits.c +++ /dev/null @@ -1,284 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015, 2016 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_wire_deposits.c - * @brief Implementation of the /wire/deposits request of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_common.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * @brief A /wire/deposits Handle - */ -struct TALER_MINT_WireDepositsHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_WireDepositsCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - -}; - - -/** - * Function called when we're done processing the - * HTTP /wire/deposits request. - * - * @param cls the `struct TALER_MINT_WireDepositsHandle` - * @param eh the curl request handle - */ -static void -handle_wire_deposits_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_WireDepositsHandle *wdh = cls; - long response_code; - json_t *json; - - wdh->job = NULL; - json = MAC_download_get_result (&wdh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - { - json_t *details_j; - struct GNUNET_HashCode h_wire; - struct TALER_Amount total_amount; - struct TALER_MerchantPublicKeyP merchant_pub; - unsigned int num_details; - struct MAJ_Specification spec[] = { - MAJ_spec_fixed_auto ("H_wire", &h_wire), - MAJ_spec_fixed_auto ("merchant_pub", &merchant_pub), - MAJ_spec_amount ("total_amount", &total_amount), - MAJ_spec_json ("details", &details_j), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - num_details = json_array_size (details_j); - { - struct TALER_WireDepositDetails details[num_details]; - unsigned int i; - - for (i=0;i<num_details;i++) - { - struct TALER_WireDepositDetails *detail = &details[i]; - struct json_t *detail_j = json_array_get (details_j, i); - struct MAJ_Specification spec_detail[] = { - MAJ_spec_fixed_auto ("H_contract", &detail->h_contract), - MAJ_spec_amount ("deposit_value", &detail->coin_value), - MAJ_spec_amount ("deposit_fee", &detail->coin_fee), - MAJ_spec_uint64 ("transaction_id", &detail->transaction_id), - MAJ_spec_fixed_auto ("coin_pub", &detail->coin_pub), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (detail_j, - spec_detail)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - } - if (0 == response_code) - break; - wdh->cb (wdh->cb_cls, - response_code, - json, - &h_wire, - &total_amount, - num_details, - details); - json_decref (json); - TALER_MINT_wire_deposits_cancel (wdh); - return; - } - } - break; - case MHD_HTTP_BAD_REQUEST: - /* This should never happen, either us or the mint is buggy - (or API version conflict); just pass JSON reply to the application */ - break; - case MHD_HTTP_UNAUTHORIZED: - /* Nothing really to verify, mint says one of the signatures is - invalid; as we checked them, this should never happen, we - should pass the JSON reply to the application */ - break; - case MHD_HTTP_NOT_FOUND: - /* Mint does not know about transaction; - we should pass the reply to the application */ - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - break; - default: - /* unexpected response code */ - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u\n", - response_code); - GNUNET_break (0); - response_code = 0; - break; - } - wdh->cb (wdh->cb_cls, - response_code, - json, - NULL, NULL, 0, NULL); - json_decref (json); - TALER_MINT_wire_deposits_cancel (wdh); -} - - -/** - * Query the mint about which transactions were combined - * to create a wire transfer. - * - * @param mint mint to query - * @param wtid raw wire transfer identifier to get information about - * @param cb callback to call - * @param cb_cls closure for @a cb - * @return handle to cancel operation - */ -struct TALER_MINT_WireDepositsHandle * -TALER_MINT_wire_deposits (struct TALER_MINT_Handle *mint, - const struct TALER_WireTransferIdentifierRawP *wtid, - TALER_MINT_WireDepositsCallback cb, - void *cb_cls) -{ - struct TALER_MINT_WireDepositsHandle *wdh; - struct TALER_MINT_Context *ctx; - char *buf; - char *path; - CURL *eh; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - - wdh = GNUNET_new (struct TALER_MINT_WireDepositsHandle); - wdh->mint = mint; - wdh->cb = cb; - wdh->cb_cls = cb_cls; - - buf = GNUNET_STRINGS_data_to_string_alloc (wtid, - sizeof (struct TALER_WireTransferIdentifierRawP)); - GNUNET_asprintf (&path, - "/wire/deposits?wtid=%s", - buf); - wdh->url = MAH_path_to_url (wdh->mint, - path); - GNUNET_free (buf); - GNUNET_free (path); - - eh = curl_easy_init (); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - wdh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &wdh->db)); - ctx = MAH_handle_to_context (mint); - wdh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_wire_deposits_finished, - wdh); - return wdh; -} - - -/** - * Cancel wire deposits request. This function cannot be used on a request - * handle if a response is already served for it. - * - * @param wdh the wire deposits request handle - */ -void -TALER_MINT_wire_deposits_cancel (struct TALER_MINT_WireDepositsHandle *wdh) -{ - if (NULL != wdh->job) - { - MAC_job_cancel (wdh->job); - wdh->job = NULL; - } - GNUNET_free_non_null (wdh->db.buf); - GNUNET_free (wdh->url); - GNUNET_free (wdh); -} - - -/* end of mint_api_wire_deposits.c */ diff --git a/src/mint-lib/test-mint-home/config/mint-common.conf b/src/mint-lib/test-mint-home/config/mint-common.conf deleted file mode 100644 index b2b94826..00000000 --- a/src/mint-lib/test-mint-home/config/mint-common.conf +++ /dev/null @@ -1,30 +0,0 @@ -[mint] -# Currency supported by the mint (can only be one) -CURRENCY = EUR - -# Wire format supported by the mint -# We use 'test' for testing of the actual -# coin operations, and 'sepa' to test SEPA-specific routines. -WIREFORMAT = test sepa - -# HTTP port the mint listens to -PORT = 8081 - -# Master public key used to sign the mint's various keys -MASTER_PUBLIC_KEY = 98NJW3CQHZQGQXTY3K85K531XKPAPAVV4Q5V8PYYRR00NJGZWNVG - -# How to access our database -DB = postgres - -# Is this is a testcase, use transient DB actions? -TESTRUN = YES - -[mintdb-postgres] - -DB_CONN_STR = "postgres:///talercheck" - -[mint-wire-sepa] -SEPA_RESPONSE_FILE = "test-mint-home/sepa.json" - -[mint-wire-test] -REDIRECT_URL = "http://www.taler.net/" diff --git a/src/mint-lib/test-mint-home/config/mint-keyup.conf b/src/mint-lib/test-mint-home/config/mint-keyup.conf deleted file mode 100644 index 8ad1f3bb..00000000 --- a/src/mint-lib/test-mint-home/config/mint-keyup.conf +++ /dev/null @@ -1,86 +0,0 @@ -[mint_keys] - -# how long is one signkey valid? -signkey_duration = 4 weeks - -# how long are the signatures with the signkey valid? -legal_duration = 2 years - -# how long do we generate denomination and signing keys -# ahead of time? -lookahead_sign = 32 weeks 1 day - -# how long do we provide to clients denomination and signing keys -# ahead of time? -lookahead_provide = 4 weeks 1 day - - -# Coin definitions are detected because the section -# name begins with "coin_". The rest of the -# name is free, but of course following the convention -# of "coin_$CURRENCY[_$SUBUNIT]_$VALUE" make sense. -[coin_eur_ct_1] -value = EUR:0.01 -duration_overlap = 5 minutes -duration_withdraw = 7 days -duration_spend = 2 years -duration_legal = 3 years -fee_withdraw = EUR:0.00 -fee_deposit = EUR:0.00 -fee_refresh = EUR:0.01 -rsa_keysize = 1024 - -[coin_eur_ct_10] -value = EUR:0.10 -duration_overlap = 5 minutes -duration_withdraw = 7 days -duration_spend = 2 years -duration_legal = 3 years -fee_withdraw = EUR:0.01 -fee_deposit = EUR:0.01 -fee_refresh = EUR:0.03 -rsa_keysize = 1024 - -[coin_eur_1] -value = EUR:1 -duration_overlap = 5 minutes -duration_withdraw = 7 days -duration_spend = 2 years -duration_legal = 3 years -fee_withdraw = EUR:0.01 -fee_deposit = EUR:0.01 -fee_refresh = EUR:0.03 -rsa_keysize = 1024 - -[coin_eur_5] -value = EUR:5 -duration_overlap = 5 minutes -duration_withdraw = 7 days -duration_spend = 2 years -duration_legal = 3 years -fee_withdraw = EUR:0.01 -fee_deposit = EUR:0.01 -fee_refresh = EUR:0.03 -rsa_keysize = 1024 - -[coin_eur_10] -value = EUR:10 -duration_overlap = 5 minutes -duration_withdraw = 7 days -duration_spend = 2 years -duration_legal = 3 years -fee_withdraw = EUR:0.01 -fee_deposit = EUR:0.01 -fee_refresh = EUR:0.03 -rsa_keysize = 1024 - -[coin_eur_1000] -value = EUR:1000 -duration_overlap = 5 minutes -duration_withdraw = 7 days -duration_spend = 2 years -duration_legal = 3 years -fee_withdraw = EUR:0.01 -fee_deposit = EUR:0.01 -fee_refresh = EUR:0.03 -rsa_keysize = 2048 diff --git a/src/mint-lib/test-mint-home/master.priv b/src/mint-lib/test-mint-home/master.priv deleted file mode 100644 index 39492693..00000000 --- a/src/mint-lib/test-mint-home/master.priv +++ /dev/null @@ -1 +0,0 @@ -pÚ^ó-Ú33ˆ€XXÁ!ˆ\0qúýµmUþ_‰ˆ
\ No newline at end of file diff --git a/src/mint-lib/test-mint-home/sepa.json b/src/mint-lib/test-mint-home/sepa.json deleted file mode 100644 index 36d12f66..00000000 --- a/src/mint-lib/test-mint-home/sepa.json +++ /dev/null @@ -1,6 +0,0 @@ -{ - "receiver_name": "Max Mustermann", - "iban": "DE89370400440532013000", - "bic": "COBADEFF370", - "sig": "8M5YJXM68PRAXKH76HYEBCJW657B23JA0RFGNDMZK2379YZMT626H1BN89KC0M1KJBWGYEN5Z763Q0Y7MCTZQ6BPPT7D9KFCTW60C10" -}
\ No newline at end of file diff --git a/src/mint-lib/test_mint_api.c b/src/mint-lib/test_mint_api.c deleted file mode 100644 index b243cc2c..00000000 --- a/src/mint-lib/test_mint_api.c +++ /dev/null @@ -1,2599 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015, 2016 GNUnet e.V. - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/> -*/ -/** - * @file mint/test_mint_api.c - * @brief testcase to test mint's HTTP API interface - * @author Sree Harsha Totakura <sreeharsha@totakura.in> - * @author Christian Grothoff - */ -#include "platform.h" -#include "taler_util.h" -#include "taler_signatures.h" -#include "taler_mint_service.h" -#include <gnunet/gnunet_util_lib.h> -#include <microhttpd.h> - -/** - * Is the configuration file is set to include wire format 'test'? - */ -#define WIRE_TEST 1 - -/** - * Is the configuration file is set to include wire format 'sepa'? - */ -#define WIRE_SEPA 1 - -/** - * Main execution context for the main loop. - */ -static struct TALER_MINT_Context *ctx; - -/** - * Handle to access the mint. - */ -static struct TALER_MINT_Handle *mint; - -/** - * Task run on shutdown. - */ -static struct GNUNET_SCHEDULER_Task *shutdown_task; - -/** - * Task that runs the main event loop. - */ -static struct GNUNET_SCHEDULER_Task *ctx_task; - -/** - * Result of the testcases, #GNUNET_OK on success - */ -static int result; - - -/** - * Opcodes for the interpreter. - */ -enum OpCode -{ - /** - * Termination code, stops the interpreter loop (with success). - */ - OC_END = 0, - - /** - * Add funds to a reserve by (faking) incoming wire transfer. - */ - OC_ADMIN_ADD_INCOMING, - - /** - * Check status of a reserve. - */ - OC_WITHDRAW_STATUS, - - /** - * Withdraw a coin from a reserve. - */ - OC_WITHDRAW_SIGN, - - /** - * Deposit a coin (pay with it). - */ - OC_DEPOSIT, - - /** - * Melt a (set of) coins. - */ - OC_REFRESH_MELT, - - /** - * Complete melting session by withdrawing melted coins. - */ - OC_REFRESH_REVEAL, - - /** - * Verify mint's /refresh/link by linking original private key to - * results from #OC_REFRESH_REVEAL step. - */ - OC_REFRESH_LINK, - - /** - * Verify the mint's /wire-method. - */ - OC_WIRE, - - /** - * Verify mint's /wire/deposits method. - */ - OC_WIRE_DEPOSITS, - - /** - * Verify mint's /deposit/wtid method. - */ - OC_DEPOSIT_WTID - -}; - - -/** - * Structure specifying details about a coin to be melted. - * Used in a NULL-terminated array as part of command - * specification. - */ -struct MeltDetails -{ - - /** - * Amount to melt (including fee). - */ - const char *amount; - - /** - * Reference to reserve_withdraw operations for coin to - * be used for the /refresh/melt operation. - */ - const char *coin_ref; - -}; - - -/** - * Information about a fresh coin generated by the refresh operation. - */ -struct FreshCoin -{ - - /** - * If @e amount is NULL, this specifies the denomination key to - * use. Otherwise, this will be set (by the interpreter) to the - * denomination PK matching @e amount. - */ - const struct TALER_MINT_DenomPublicKey *pk; - - /** - * Set (by the interpreter) to the mint's signature over the - * coin's public key. - */ - struct TALER_DenominationSignature sig; - - /** - * Set (by the interpreter) to the coin's private key. - */ - struct TALER_CoinSpendPrivateKeyP coin_priv; - -}; - - -/** - * Details for a mint operation to execute. - */ -struct Command -{ - /** - * Opcode of the command. - */ - enum OpCode oc; - - /** - * Label for the command, can be NULL. - */ - const char *label; - - /** - * Which response code do we expect for this command? - */ - unsigned int expected_response_code; - - /** - * Details about the command. - */ - union - { - - /** - * Information for a #OC_ADMIN_ADD_INCOMING command. - */ - struct - { - - /** - * Label to another admin_add_incoming command if we - * should deposit into an existing reserve, NULL if - * a fresh reserve should be created. - */ - const char *reserve_reference; - - /** - * String describing the amount to add to the reserve. - */ - const char *amount; - - /** - * Wire details (JSON). - */ - const char *wire; - - /** - * Set (by the interpreter) to the reserve's private key - * we used to fill the reserve. - */ - struct TALER_ReservePrivateKeyP reserve_priv; - - /** - * Set to the API's handle during the operation. - */ - struct TALER_MINT_AdminAddIncomingHandle *aih; - - } admin_add_incoming; - - /** - * Information for a #OC_WITHDRAW_STATUS command. - */ - struct - { - - /** - * Label to the #OC_ADMIN_ADD_INCOMING command which - * created the reserve. - */ - const char *reserve_reference; - - /** - * Set to the API's handle during the operation. - */ - struct TALER_MINT_ReserveStatusHandle *wsh; - - /** - * Expected reserve balance. - */ - const char *expected_balance; - - } reserve_status; - - /** - * Information for a #OC_WITHDRAW_SIGN command. - */ - struct - { - - /** - * Which reserve should we withdraw from? - */ - const char *reserve_reference; - - /** - * String describing the denomination value we should withdraw. - * A corresponding denomination key must exist in the mint's - * offerings. Can be NULL if @e pk is set instead. - */ - const char *amount; - - /** - * If @e amount is NULL, this specifies the denomination key to - * use. Otherwise, this will be set (by the interpreter) to the - * denomination PK matching @e amount. - */ - const struct TALER_MINT_DenomPublicKey *pk; - - /** - * Set (by the interpreter) to the mint's signature over the - * coin's public key. - */ - struct TALER_DenominationSignature sig; - - /** - * Set (by the interpreter) to the coin's private key. - */ - struct TALER_CoinSpendPrivateKeyP coin_priv; - - /** - * Blinding key used for the operation. - */ - struct TALER_DenominationBlindingKey blinding_key; - - /** - * Withdraw handle (while operation is running). - */ - struct TALER_MINT_ReserveWithdrawHandle *wsh; - - } reserve_withdraw; - - /** - * Information for a #OC_DEPOSIT command. - */ - struct - { - - /** - * Amount to deposit. - */ - const char *amount; - - /** - * Reference to a reserve_withdraw operation for a coin to - * be used for the /deposit operation. - */ - const char *coin_ref; - - /** - * If this @e coin_ref refers to an operation that generated - * an array of coins, this value determines which coin to use. - */ - unsigned int coin_idx; - - /** - * JSON string describing the merchant's "wire details". - */ - const char *wire_details; - - /** - * JSON string describing the contract between the two parties. - */ - const char *contract; - - /** - * Transaction ID to use. - */ - uint64_t transaction_id; - - /** - * Relative time (to add to 'now') to compute the refund deadline. - * Zero for no refunds. - */ - struct GNUNET_TIME_Relative refund_deadline; - - /** - * Set (by the interpreter) to a fresh private key of the merchant, - * if @e refund_deadline is non-zero. - */ - struct TALER_MerchantPrivateKeyP merchant_priv; - - /** - * Deposit handle while operation is running. - */ - struct TALER_MINT_DepositHandle *dh; - - } deposit; - - /** - * Information for a #OC_REFRESH_MELT command. - */ - struct - { - - /** - * Information about coins to be melted. - */ - struct MeltDetails *melted_coins; - - /** - * Denominations of the fresh coins to withdraw. - */ - const char **fresh_amounts; - - /** - * Array of the public keys corresponding to - * the @e fresh_amounts, set by the interpreter. - */ - const struct TALER_MINT_DenomPublicKey **fresh_pks; - - /** - * Melt handle while operation is running. - */ - struct TALER_MINT_RefreshMeltHandle *rmh; - - /** - * Data used in the refresh operation, set by the interpreter. - */ - char *refresh_data; - - /** - * Number of bytes in @e refresh_data, set by the interpreter. - */ - size_t refresh_data_length; - - /** - * Set by the interpreter (upon completion) to the noreveal - * index selected by the mint. - */ - uint16_t noreveal_index; - - } refresh_melt; - - /** - * Information for a #OC_REFRESH_REVEAL command. - */ - struct - { - - /** - * Melt operation this is the matching reveal for. - */ - const char *melt_ref; - - /** - * Reveal handle while operation is running. - */ - struct TALER_MINT_RefreshRevealHandle *rrh; - - /** - * Number of fresh coins withdrawn, set by the interpreter. - * Length of the @e fresh_coins array. - */ - unsigned int num_fresh_coins; - - /** - * Information about coins withdrawn, set by the interpreter. - */ - struct FreshCoin *fresh_coins; - - } refresh_reveal; - - /** - * Information for a #OC_REFRESH_LINK command. - */ - struct - { - - /** - * Reveal operation this is the matching link for. - */ - const char *reveal_ref; - - /** - * Link handle while operation is running. - */ - struct TALER_MINT_RefreshLinkHandle *rlh; - - /** - * Which of the melted coins should be used for the linkage? - */ - unsigned int coin_idx; - - } refresh_link; - - /** - * Information for the /wire command. - */ - struct { - - /** - * Handle to the wire request. - */ - struct TALER_MINT_WireHandle *wh; - - /** - * Format we expect to see, others will be *ignored*. - */ - const char *format; - - } wire; - - /** - * Information for the /wire/deposits's command. - */ - struct { - - /** - * Handle to the wire deposits request. - */ - struct TALER_MINT_WireDepositsHandle *wdh; - - /** - * Reference to a /deposit/wtid command. If set, we use the - * WTID from that command. - */ - const char *wtid_ref; - - /** - * WTID to use (used if @e wtid_ref is NULL). - */ - struct TALER_WireTransferIdentifierRawP wtid; - - /* TODO: may want to add list of deposits we expected - to see aggregated here in the future. */ - - } wire_deposits; - - /** - * Information for the /deposit/wtid command. - */ - struct { - - /** - * Handle to the deposit wtid request. - */ - struct TALER_MINT_DepositWtidHandle *dwh; - - /** - * Which /deposit operation should we obtain WTID data for? - */ - const char *deposit_ref; - - /** - * What is the expected total amount? Only used if - * @e expected_response_code was #MHD_HTTP_OK. - */ - struct TALER_Amount total_amount_expected; - - /** - * Wire transfer identifier, set if #MHD_HTTP_OK was the response code. - */ - struct TALER_WireTransferIdentifierRawP wtid; - - } deposit_wtid; - - } details; - -}; - - -/** - * State of the interpreter loop. - */ -struct InterpreterState -{ - /** - * Keys from the mint. - */ - const struct TALER_MINT_Keys *keys; - - /** - * Commands the interpreter will run. - */ - struct Command *commands; - - /** - * Interpreter task (if one is scheduled). - */ - struct GNUNET_SCHEDULER_Task *task; - - /** - * Instruction pointer. Tells #interpreter_run() which - * instruction to run next. - */ - unsigned int ip; - -}; - - -/** - * Task that runs the context's event loop with the GNUnet scheduler. - * - * @param cls unused - * @param tc scheduler context (unused) - */ -static void -context_task (void *cls, - const struct GNUNET_SCHEDULER_TaskContext *tc); - - -/** - * Run the context task, the working set has changed. - */ -static void -trigger_context_task () -{ - GNUNET_SCHEDULER_cancel (ctx_task); - ctx_task = GNUNET_SCHEDULER_add_now (&context_task, - NULL); -} - - -/** - * The testcase failed, return with an error code. - * - * @param is interpreter state to clean up - */ -static void -fail (struct InterpreterState *is) -{ - result = GNUNET_SYSERR; - GNUNET_SCHEDULER_shutdown (); -} - - -/** - * Find a command by label. - * - * @param is interpreter state to search - * @param label label to look for - * @return NULL if command was not found - */ -static const struct Command * -find_command (const struct InterpreterState *is, - const char *label) -{ - unsigned int i; - const struct Command *cmd; - - if (NULL == label) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Attempt to lookup command for empty label\n"); - return NULL; - } - for (i=0;OC_END != (cmd = &is->commands[i])->oc;i++) - if ( (NULL != cmd->label) && - (0 == strcmp (cmd->label, - label)) ) - return cmd; - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command not found: %s\n", - label); - return NULL; -} - - -/** - * Run the main interpreter loop that performs mint operations. - * - * @param cls contains the `struct InterpreterState` - * @param tc scheduler context - */ -static void -interpreter_run (void *cls, - const struct GNUNET_SCHEDULER_TaskContext *tc); - - -/** - * Function called upon completion of our /admin/add/incoming request. - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param full_response full response from the mint (for logging, in case of errors) - */ -static void -add_incoming_cb (void *cls, - unsigned int http_status, - json_t *full_response) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - - cmd->details.admin_add_incoming.aih = NULL; - if (MHD_HTTP_OK != http_status) - { - GNUNET_break (0); - fail (is); - return; - } - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Check if the given historic event @a h corresponds to the given - * command @a cmd. - * - * @param h event in history - * @param cmd an #OC_ADMIN_ADD_INCOMING command - * @return #GNUNET_OK if they match, #GNUNET_SYSERR if not - */ -static int -compare_admin_add_incoming_history (const struct TALER_MINT_ReserveHistory *h, - const struct Command *cmd) -{ - struct TALER_Amount amount; - - if (TALER_MINT_RTT_DEPOSIT != h->type) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - GNUNET_assert (GNUNET_OK == - TALER_string_to_amount (cmd->details.admin_add_incoming.amount, - &amount)); - if (0 != TALER_amount_cmp (&amount, - &h->amount)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Check if the given historic event @a h corresponds to the given - * command @a cmd. - * - * @param h event in history - * @param cmd an #OC_WITHDRAW_SIGN command - * @return #GNUNET_OK if they match, #GNUNET_SYSERR if not - */ -static int -compare_reserve_withdraw_history (const struct TALER_MINT_ReserveHistory *h, - const struct Command *cmd) -{ - struct TALER_Amount amount; - struct TALER_Amount amount_with_fee; - - if (TALER_MINT_RTT_WITHDRAWAL != h->type) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - GNUNET_assert (GNUNET_OK == - TALER_string_to_amount (cmd->details.reserve_withdraw.amount, - &amount)); - GNUNET_assert (GNUNET_OK == - TALER_amount_add (&amount_with_fee, - &amount, - &cmd->details.reserve_withdraw.pk->fee_withdraw)); - if (0 != TALER_amount_cmp (&amount_with_fee, - &h->amount)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Function called with the result of a /reserve/status request. - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param[in] json original response in JSON format (useful only for diagnostics) - * @param balance current balance in the reserve, NULL on error - * @param history_length number of entries in the transaction history, 0 on error - * @param history detailed transaction history, NULL on error - */ -static void -reserve_status_cb (void *cls, - unsigned int http_status, - json_t *json, - const struct TALER_Amount *balance, - unsigned int history_length, - const struct TALER_MINT_ReserveHistory *history) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - struct Command *rel; - unsigned int i; - unsigned int j; - struct TALER_Amount amount; - - cmd->details.reserve_status.wsh = NULL; - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - GNUNET_break (0); - json_dumpf (json, stderr, 0); - fail (is); - return; - } - switch (http_status) - { - case MHD_HTTP_OK: - /* FIXME: note that history events may come in a different - order than the commands. However, for now this works... */ - j = 0; - for (i=0;i<is->ip;i++) - { - switch ((rel = &is->commands[i])->oc) - { - case OC_ADMIN_ADD_INCOMING: - if ( ( (NULL != rel->label) && - (0 == strcmp (cmd->details.reserve_status.reserve_reference, - rel->label) ) ) || - ( (NULL != rel->details.admin_add_incoming.reserve_reference) && - (0 == strcmp (cmd->details.reserve_status.reserve_reference, - rel->details.admin_add_incoming.reserve_reference) ) ) ) - { - if (GNUNET_OK != - compare_admin_add_incoming_history (&history[j], - rel)) - { - GNUNET_break (0); - fail (is); - return; - } - j++; - } - break; - case OC_WITHDRAW_SIGN: - if (0 == strcmp (cmd->details.reserve_status.reserve_reference, - rel->details.reserve_withdraw.reserve_reference)) - { - if (GNUNET_OK != - compare_reserve_withdraw_history (&history[j], - rel)) - { - GNUNET_break (0); - fail (is); - return; - } - j++; - } - break; - default: - /* unreleated, just skip */ - break; - } - } - if (j != history_length) - { - GNUNET_break (0); - fail (is); - return; - } - if (NULL != cmd->details.reserve_status.expected_balance) - { - GNUNET_assert (GNUNET_OK == - TALER_string_to_amount (cmd->details.reserve_status.expected_balance, - &amount)); - if (0 != TALER_amount_cmp (&amount, - balance)) - { - GNUNET_break (0); - fail (is); - return; - } - } - break; - default: - /* Unsupported status code (by test harness) */ - GNUNET_break (0); - break; - } - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Function called upon completion of our /reserve/withdraw request. - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param sig signature over the coin, NULL on error - * @param full_response full response from the mint (for logging, in case of errors) - */ -static void -reserve_withdraw_cb (void *cls, - unsigned int http_status, - const struct TALER_DenominationSignature *sig, - json_t *full_response) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - - cmd->details.reserve_withdraw.wsh = NULL; - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - json_dumpf (full_response, stderr, 0); - GNUNET_break (0); - fail (is); - return; - } - switch (http_status) - { - case MHD_HTTP_OK: - if (NULL == sig) - { - GNUNET_break (0); - fail (is); - return; - } - cmd->details.reserve_withdraw.sig.rsa_signature - = GNUNET_CRYPTO_rsa_signature_dup (sig->rsa_signature); - break; - case MHD_HTTP_PAYMENT_REQUIRED: - /* nothing to check */ - break; - default: - /* Unsupported status code (by test harness) */ - GNUNET_break (0); - break; - } - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Function called with the result of a /deposit operation. - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful deposit; - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param obj the received JSON reply, should be kept as proof (and, in case of errors, - * be forwarded to the customer) - */ -static void -deposit_cb (void *cls, - unsigned int http_status, - json_t *obj) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - - cmd->details.deposit.dh = NULL; - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - json_dumpf (obj, stderr, 0); - fail (is); - return; - } - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Function called with the result of the /refresh/melt operation. - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, never #MHD_HTTP_OK (200) as for successful intermediate response this callback is skipped. - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param noreveal_index choice by the mint in the cut-and-choose protocol, - * UINT16_MAX on error - * @param full_response full response from the mint (for logging, in case of errors) - */ -static void -melt_cb (void *cls, - unsigned int http_status, - uint16_t noreveal_index, - json_t *full_response) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - - cmd->details.refresh_melt.rmh = NULL; - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - json_dumpf (full_response, stderr, 0); - fail (is); - return; - } - cmd->details.refresh_melt.noreveal_index = noreveal_index; - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Function called with the result of the /refresh/reveal operation. - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param num_coins number of fresh coins created, length of the @a sigs and @a coin_privs arrays, 0 if the operation failed - * @param coin_privs array of @a num_coins private keys for the coins that were created, NULL on error - * @param sigs array of signature over @a num_coins coins, NULL on error - * @param full_response full response from the mint (for logging, in case of errors) - */ -static void -reveal_cb (void *cls, - unsigned int http_status, - unsigned int num_coins, - const struct TALER_CoinSpendPrivateKeyP *coin_privs, - const struct TALER_DenominationSignature *sigs, - json_t *full_response) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - const struct Command *ref; - unsigned int i; - - cmd->details.refresh_reveal.rrh = NULL; - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - json_dumpf (full_response, stderr, 0); - fail (is); - return; - } - ref = find_command (is, - cmd->details.refresh_reveal.melt_ref); - cmd->details.refresh_reveal.num_fresh_coins = num_coins; - switch (http_status) - { - case MHD_HTTP_OK: - cmd->details.refresh_reveal.fresh_coins - = GNUNET_new_array (num_coins, - struct FreshCoin); - for (i=0;i<num_coins;i++) - { - struct FreshCoin *fc = &cmd->details.refresh_reveal.fresh_coins[i]; - - fc->pk = ref->details.refresh_melt.fresh_pks[i]; - fc->coin_priv = coin_privs[i]; - fc->sig.rsa_signature - = GNUNET_CRYPTO_rsa_signature_dup (sigs[i].rsa_signature); - } - break; - default: - break; - } - - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Function called with the result of a /refresh/link operation. - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param num_coins number of fresh coins created, length of the @a sigs and @a coin_privs arrays, 0 if the operation failed - * @param coin_privs array of @a num_coins private keys for the coins that were created, NULL on error - * @param sigs array of signature over @a num_coins coins, NULL on error - * @param pubs array of public keys for the @a sigs, NULL on error - * @param full_response full response from the mint (for logging, in case of errors) - */ -static void -link_cb (void *cls, - unsigned int http_status, - unsigned int num_coins, - const struct TALER_CoinSpendPrivateKeyP *coin_privs, - const struct TALER_DenominationSignature *sigs, - const struct TALER_DenominationPublicKey *pubs, - json_t *full_response) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - const struct Command *ref; - unsigned int i; - unsigned int j; - unsigned int found; - - cmd->details.refresh_link.rlh = NULL; - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - json_dumpf (full_response, stderr, 0); - fail (is); - return; - } - ref = find_command (is, - cmd->details.refresh_link.reveal_ref); - switch (http_status) - { - case MHD_HTTP_OK: - /* check that number of coins returned matches */ - if (num_coins != ref->details.refresh_reveal.num_fresh_coins) - { - GNUNET_break (0); - fail (is); - return; - } - /* check that the coins match */ - for (i=0;i<num_coins;i++) - for (j=i+1;j<num_coins;j++) - if (0 == memcmp (&coin_privs[i], - &coin_privs[j], - sizeof (struct TALER_CoinSpendPrivateKeyP))) - GNUNET_break (0); - /* Note: coins might be legitimately permutated in here... */ - found = 0; - for (i=0;i<num_coins;i++) - for (j=0;j<num_coins;j++) - { - const struct FreshCoin *fc; - - fc = &ref->details.refresh_reveal.fresh_coins[j]; - if ( (0 == memcmp (&coin_privs[i], - &fc->coin_priv, - sizeof (struct TALER_CoinSpendPrivateKeyP))) && - (0 == GNUNET_CRYPTO_rsa_signature_cmp (fc->sig.rsa_signature, - sigs[i].rsa_signature)) && - (0 == GNUNET_CRYPTO_rsa_public_key_cmp (fc->pk->key.rsa_public_key, - pubs[i].rsa_public_key)) ) - { - found++; - break; - } - } - if (found != num_coins) - { - fprintf (stderr, - "Only %u/%u coins match expectations\n", - found, - num_coins); - GNUNET_break (0); - fail (is); - return; - } - break; - default: - break; - } - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Find denomination key matching the given amount. - * - * @param keys array of keys to search - * @param amount coin value to look for - * @return NULL if no matching key was found - */ -static const struct TALER_MINT_DenomPublicKey * -find_pk (const struct TALER_MINT_Keys *keys, - const struct TALER_Amount *amount) -{ - unsigned int i; - struct GNUNET_TIME_Absolute now; - struct TALER_MINT_DenomPublicKey *pk; - char *str; - - now = GNUNET_TIME_absolute_get (); - for (i=0;i<keys->num_denom_keys;i++) - { - pk = &keys->denom_keys[i]; - if ( (0 == TALER_amount_cmp (amount, - &pk->value)) && - (now.abs_value_us >= pk->valid_from.abs_value_us) && - (now.abs_value_us < pk->withdraw_valid_until.abs_value_us) ) - return pk; - } - /* do 2nd pass to check if expiration times are to blame for failure */ - str = TALER_amount_to_string (amount); - for (i=0;i<keys->num_denom_keys;i++) - { - pk = &keys->denom_keys[i]; - if ( (0 == TALER_amount_cmp (amount, - &pk->value)) && - ( (now.abs_value_us < pk->valid_from.abs_value_us) || - (now.abs_value_us > pk->withdraw_valid_until.abs_value_us) ) ) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Have denomination key for `%s', but with wrong expiration range %llu vs [%llu,%llu)\n", - str, - now.abs_value_us, - pk->valid_from.abs_value_us, - pk->withdraw_valid_until.abs_value_us); - GNUNET_free (str); - return NULL; - } - } - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "No denomination key for amount %s found\n", - str); - GNUNET_free (str); - return NULL; -} - - -/** - * Callbacks called with the result(s) of a - * wire format inquiry request to the mint. - * - * The callback is invoked multiple times, once for each supported @a - * method. Finally, it is invoked one more time with cls/0/NULL/NULL - * to indicate the end of the iteration. If any request fails to - * generate a valid response from the mint, @a http_status will also - * be zero and the iteration will also end. Thus, the iteration - * always ends with a final call with an @a http_status of 0. If the - * @a http_status is already 0 on the first call, then the response to - * the /wire request was invalid. Later, clients can tell the - * difference between @a http_status of 0 indicating a failed - * /wire/method request and a regular end of the iteration by @a - * method being non-NULL. If the mint simply correctly asserts that - * it does not support any methods, @a method will be NULL but the @a - * http_status will be #MHD_HTTP_OK for the first call (followed by a - * cls/0/NULL/NULL call to signal the end of the iteration). - * - * @param cls closure with the interpreter state - * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful request; - * 0 if the mint's reply is bogus (fails to follow the protocol) - * @param method wire format method supported, i.e. "test" or "sepa", or NULL - * if already the /wire request failed. - * @param obj the received JSON reply, if successful this should be the wire - * format details as provided by /wire/METHOD/, or NULL if the - * reply was not in JSON format (in this case, the client might - * want to do an HTTP request to /wire/METHOD/ with a browser to - * provide more information to the user about the @a method). - */ -static void -wire_cb (void *cls, - unsigned int http_status, - const char *method, - json_t *obj) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - - if (0 == http_status) - { - /* 0 always signals the end of the iteration */ - cmd->details.wire.wh = NULL; - } - else if ( (NULL != method) && - (0 != strcasecmp (method, - cmd->details.wire.format)) ) - { - /* not the method we care about, skip */ - return; - } - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s/%s\n", - http_status, - cmd->label, - method); - json_dumpf (obj, stderr, 0); - fail (is); - return; - } - if (0 == http_status) - { - /* end of iteration, move to next command */ - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); - return; - } - /* For now, we only support to be called only once - with a "positive" result; so we switch to an - expected value of 0 for the 2nd iteration */ - cmd->expected_response_code = 0; -} - - -/** - * Function called with detailed wire transfer data, including all - * of the coin transactions that were combined into the wire transfer. - * - * @param cls closure - * @param http_status HTTP status code we got, 0 on mint protocol violation - * @param json original json reply (may include signatures, those have then been - * validated already) - * @param wtid extracted wire transfer identifier, or NULL if the mint could - * not provide any (set only if @a http_status is #MHD_HTTP_OK) - * @param total_amount total amount of the wire transfer, or NULL if the mint could - * not provide any @a wtid (set only if @a http_status is #MHD_HTTP_OK) - * @param details_length length of the @a details array - * @param details array with details about the combined transactions - */ -static void -wire_deposits_cb (void *cls, - unsigned int http_status, - json_t *json, - const struct GNUNET_HashCode *h_wire, - const struct TALER_Amount *total_amount, - unsigned int details_length, - const struct TALER_WireDepositDetails *details) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - const struct Command *ref; - - cmd->details.wire_deposits.wdh = NULL; - ref = find_command (is, - cmd->details.wire_deposits.wtid_ref); - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - json_dumpf (json, stderr, 0); - fail (is); - return; - } - switch (http_status) - { - case MHD_HTTP_OK: - if (0 != TALER_amount_cmp (total_amount, - &ref->details.deposit_wtid.total_amount_expected)) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Total amount missmatch to command %s\n", - http_status, - cmd->label); - json_dumpf (json, stderr, 0); - fail (is); - return; - } - if (NULL != ref->details.deposit_wtid.deposit_ref) - { - const struct Command *dep; - struct GNUNET_HashCode hw; - - dep = find_command (is, - ref->details.deposit_wtid.deposit_ref); - GNUNET_CRYPTO_hash (dep->details.deposit.wire_details, - strlen (dep->details.deposit.wire_details), - &hw); - if (0 != memcmp (&hw, - h_wire, - sizeof (struct GNUNET_HashCode))) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Wire hash missmatch to command %s\n", - cmd->label); - json_dumpf (json, stderr, 0); - fail (is); - return; - } - } - break; - default: - break; - } - - /* move to next command */ - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Function called with detailed wire transfer data. - * - * @param cls closure - * @param http_status HTTP status code we got, 0 on mint protocol violation - * @param json original json reply (may include signatures, those have then been - * validated already) - * @param wtid wire transfer identifier used by the mint, NULL if mint did not - * yet execute the transaction - * @param execution_time actual or planned execution time for the wire transfer - * @param coin_contribution contribution to the @a total_amount of the deposited coin (may be NULL) - * @param total_amount total amount of the wire transfer, or NULL if the mint could - * not provide any @a wtid (set only if @a http_status is #MHD_HTTP_OK) - */ -static void -deposit_wtid_cb (void *cls, - unsigned int http_status, - json_t *json, - const struct TALER_WireTransferIdentifierRawP *wtid, - struct GNUNET_TIME_Absolute execution_time, - const struct TALER_Amount *coin_contribution) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - - cmd->details.deposit_wtid.dwh = NULL; - if (cmd->expected_response_code != http_status) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u to command %s\n", - http_status, - cmd->label); - json_dumpf (json, stderr, 0); - fail (is); - return; - } - switch (http_status) - { - case MHD_HTTP_OK: - cmd->details.deposit_wtid.wtid = *wtid; - break; - default: - break; - } - - /* move to next command */ - is->ip++; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Run the main interpreter loop that performs mint operations. - * - * @param cls contains the `struct InterpreterState` - * @param tc scheduler context - */ -static void -interpreter_run (void *cls, - const struct GNUNET_SCHEDULER_TaskContext *tc) -{ - struct InterpreterState *is = cls; - struct Command *cmd = &is->commands[is->ip]; - const struct Command *ref; - struct TALER_ReservePublicKeyP reserve_pub; - struct TALER_CoinSpendPublicKeyP coin_pub; - struct TALER_Amount amount; - struct GNUNET_TIME_Absolute execution_date; - json_t *wire; - - is->task = NULL; - if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)) - { - fprintf (stderr, - "Test aborted by shutdown request\n"); - fail (is); - return; - } - switch (cmd->oc) - { - case OC_END: - result = GNUNET_OK; - GNUNET_SCHEDULER_shutdown (); - return; - case OC_ADMIN_ADD_INCOMING: - if (NULL != - cmd->details.admin_add_incoming.reserve_reference) - { - ref = find_command (is, - cmd->details.admin_add_incoming.reserve_reference); - GNUNET_assert (NULL != ref); - GNUNET_assert (OC_ADMIN_ADD_INCOMING == ref->oc); - cmd->details.admin_add_incoming.reserve_priv - = ref->details.admin_add_incoming.reserve_priv; - } - else - { - struct GNUNET_CRYPTO_EddsaPrivateKey *priv; - - priv = GNUNET_CRYPTO_eddsa_key_create (); - cmd->details.admin_add_incoming.reserve_priv.eddsa_priv = *priv; - GNUNET_free (priv); - } - GNUNET_CRYPTO_eddsa_key_get_public (&cmd->details.admin_add_incoming.reserve_priv.eddsa_priv, - &reserve_pub.eddsa_pub); - if (GNUNET_OK != - TALER_string_to_amount (cmd->details.admin_add_incoming.amount, - &amount)) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse amount `%s' at %u\n", - cmd->details.admin_add_incoming.amount, - is->ip); - fail (is); - return; - } - wire = json_loads (cmd->details.admin_add_incoming.wire, - JSON_REJECT_DUPLICATES, - NULL); - if (NULL == wire) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse wire details `%s' at %u\n", - cmd->details.admin_add_incoming.wire, - is->ip); - fail (is); - return; - } - execution_date = GNUNET_TIME_absolute_get (); - TALER_round_abs_time (&execution_date); - cmd->details.admin_add_incoming.aih - = TALER_MINT_admin_add_incoming (mint, - &reserve_pub, - &amount, - execution_date, - wire, - &add_incoming_cb, - is); - if (NULL == cmd->details.admin_add_incoming.aih) - { - GNUNET_break (0); - fail (is); - return; - } - trigger_context_task (); - return; - case OC_WITHDRAW_STATUS: - GNUNET_assert (NULL != - cmd->details.reserve_status.reserve_reference); - ref = find_command (is, - cmd->details.reserve_status.reserve_reference); - GNUNET_assert (NULL != ref); - GNUNET_assert (OC_ADMIN_ADD_INCOMING == ref->oc); - GNUNET_CRYPTO_eddsa_key_get_public (&ref->details.admin_add_incoming.reserve_priv.eddsa_priv, - &reserve_pub.eddsa_pub); - cmd->details.reserve_status.wsh - = TALER_MINT_reserve_status (mint, - &reserve_pub, - &reserve_status_cb, - is); - trigger_context_task (); - return; - case OC_WITHDRAW_SIGN: - GNUNET_assert (NULL != - cmd->details.reserve_withdraw.reserve_reference); - ref = find_command (is, - cmd->details.reserve_withdraw.reserve_reference); - GNUNET_assert (NULL != ref); - GNUNET_assert (OC_ADMIN_ADD_INCOMING == ref->oc); - if (NULL != cmd->details.reserve_withdraw.amount) - { - if (GNUNET_OK != - TALER_string_to_amount (cmd->details.reserve_withdraw.amount, - &amount)) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse amount `%s' at %u\n", - cmd->details.reserve_withdraw.amount, - is->ip); - fail (is); - return; - } - cmd->details.reserve_withdraw.pk = find_pk (is->keys, - &amount); - } - if (NULL == cmd->details.reserve_withdraw.pk) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to determine denomination key at %u\n", - is->ip); - fail (is); - return; - } - - /* create coin's private key */ - { - struct GNUNET_CRYPTO_EddsaPrivateKey *priv; - - priv = GNUNET_CRYPTO_eddsa_key_create (); - cmd->details.reserve_withdraw.coin_priv.eddsa_priv = *priv; - GNUNET_free (priv); - } - GNUNET_CRYPTO_eddsa_key_get_public (&cmd->details.reserve_withdraw.coin_priv.eddsa_priv, - &coin_pub.eddsa_pub); - cmd->details.reserve_withdraw.blinding_key.rsa_blinding_key - = GNUNET_CRYPTO_rsa_blinding_key_create (GNUNET_CRYPTO_rsa_public_key_len (cmd->details.reserve_withdraw.pk->key.rsa_public_key)); - cmd->details.reserve_withdraw.wsh - = TALER_MINT_reserve_withdraw (mint, - cmd->details.reserve_withdraw.pk, - &ref->details.admin_add_incoming.reserve_priv, - &cmd->details.reserve_withdraw.coin_priv, - &cmd->details.reserve_withdraw.blinding_key, - &reserve_withdraw_cb, - is); - if (NULL == cmd->details.reserve_withdraw.wsh) - { - GNUNET_break (0); - fail (is); - return; - } - trigger_context_task (); - return; - case OC_DEPOSIT: - { - struct GNUNET_HashCode h_contract; - const struct TALER_CoinSpendPrivateKeyP *coin_priv; - const struct TALER_MINT_DenomPublicKey *coin_pk; - const struct TALER_DenominationSignature *coin_pk_sig; - struct TALER_CoinSpendPublicKeyP coin_pub; - struct TALER_CoinSpendSignatureP coin_sig; - struct GNUNET_TIME_Absolute refund_deadline; - struct GNUNET_TIME_Absolute wire_deadline; - struct GNUNET_TIME_Absolute timestamp; - struct GNUNET_CRYPTO_EddsaPrivateKey *priv; - struct TALER_MerchantPublicKeyP merchant_pub; - json_t *contract; - json_t *wire; - - GNUNET_assert (NULL != - cmd->details.deposit.coin_ref); - ref = find_command (is, - cmd->details.deposit.coin_ref); - GNUNET_assert (NULL != ref); - switch (ref->oc) - { - case OC_WITHDRAW_SIGN: - coin_priv = &ref->details.reserve_withdraw.coin_priv; - coin_pk = ref->details.reserve_withdraw.pk; - coin_pk_sig = &ref->details.reserve_withdraw.sig; - break; - case OC_REFRESH_REVEAL: - { - const struct FreshCoin *fc; - unsigned int idx; - - idx = cmd->details.deposit.coin_idx; - GNUNET_assert (idx < ref->details.refresh_reveal.num_fresh_coins); - fc = &ref->details.refresh_reveal.fresh_coins[idx]; - - coin_priv = &fc->coin_priv; - coin_pk = fc->pk; - coin_pk_sig = &fc->sig; - } - break; - default: - GNUNET_assert (0); - } - if (GNUNET_OK != - TALER_string_to_amount (cmd->details.deposit.amount, - &amount)) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse amount `%s' at %u\n", - cmd->details.deposit.amount, - is->ip); - fail (is); - return; - } - contract = json_loads (cmd->details.deposit.contract, - JSON_REJECT_DUPLICATES, - NULL); - if (NULL == contract) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse contract details `%s' at %u/%s\n", - cmd->details.deposit.contract, - is->ip, - cmd->label); - fail (is); - return; - } - TALER_hash_json (contract, - &h_contract); - wire = json_loads (cmd->details.deposit.wire_details, - JSON_REJECT_DUPLICATES, - NULL); - if (NULL == wire) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse wire details `%s' at %u/%s\n", - cmd->details.deposit.wire_details, - is->ip, - cmd->label); - fail (is); - return; - } - GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv, - &coin_pub.eddsa_pub); - - priv = GNUNET_CRYPTO_eddsa_key_create (); - cmd->details.deposit.merchant_priv.eddsa_priv = *priv; - GNUNET_free (priv); - if (0 != cmd->details.deposit.refund_deadline.rel_value_us) - { - refund_deadline = GNUNET_TIME_relative_to_absolute (cmd->details.deposit.refund_deadline); - } - else - { - refund_deadline = GNUNET_TIME_UNIT_ZERO_ABS; - } - GNUNET_CRYPTO_eddsa_key_get_public (&cmd->details.deposit.merchant_priv.eddsa_priv, - &merchant_pub.eddsa_pub); - - wire_deadline = GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_DAYS); - timestamp = GNUNET_TIME_absolute_get (); - TALER_round_abs_time (×tamp); - { - struct TALER_DepositRequestPS dr; - - memset (&dr, 0, sizeof (dr)); - dr.purpose.size = htonl (sizeof (struct TALER_DepositRequestPS)); - dr.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_COIN_DEPOSIT); - dr.h_contract = h_contract; - TALER_hash_json (wire, - &dr.h_wire); - dr.timestamp = GNUNET_TIME_absolute_hton (timestamp); - dr.refund_deadline = GNUNET_TIME_absolute_hton (refund_deadline); - dr.transaction_id = GNUNET_htonll (cmd->details.deposit.transaction_id); - TALER_amount_hton (&dr.amount_with_fee, - &amount); - TALER_amount_hton (&dr.deposit_fee, - &coin_pk->fee_deposit); - dr.merchant = merchant_pub; - dr.coin_pub = coin_pub; - GNUNET_assert (GNUNET_OK == - GNUNET_CRYPTO_eddsa_sign (&coin_priv->eddsa_priv, - &dr.purpose, - &coin_sig.eddsa_signature)); - } - cmd->details.deposit.dh - = TALER_MINT_deposit (mint, - &amount, - wire_deadline, - wire, - &h_contract, - &coin_pub, - coin_pk_sig, - &coin_pk->key, - timestamp, - cmd->details.deposit.transaction_id, - &merchant_pub, - refund_deadline, - &coin_sig, - &deposit_cb, - is); - if (NULL == cmd->details.deposit.dh) - { - GNUNET_break (0); - json_decref (wire); - fail (is); - return; - } - json_decref (wire); - trigger_context_task (); - return; - } - case OC_REFRESH_MELT: - { - unsigned int num_melted_coins; - unsigned int num_fresh_coins; - - cmd->details.refresh_melt.noreveal_index = UINT16_MAX; - for (num_melted_coins=0; - NULL != cmd->details.refresh_melt.melted_coins[num_melted_coins].amount; - num_melted_coins++) ; - for (num_fresh_coins=0; - NULL != cmd->details.refresh_melt.fresh_amounts[num_fresh_coins]; - num_fresh_coins++) ; - - cmd->details.refresh_melt.fresh_pks - = GNUNET_new_array (num_fresh_coins, - const struct TALER_MINT_DenomPublicKey *); - { - struct TALER_CoinSpendPrivateKeyP melt_privs[num_melted_coins]; - struct TALER_Amount melt_amounts[num_melted_coins]; - struct TALER_DenominationSignature melt_sigs[num_melted_coins]; - struct TALER_MINT_DenomPublicKey melt_pks[num_melted_coins]; - struct TALER_MINT_DenomPublicKey fresh_pks[num_fresh_coins]; - unsigned int i; - - for (i=0;i<num_melted_coins;i++) - { - const struct MeltDetails *md = &cmd->details.refresh_melt.melted_coins[i]; - ref = find_command (is, - md->coin_ref); - GNUNET_assert (NULL != ref); - GNUNET_assert (OC_WITHDRAW_SIGN == ref->oc); - - melt_privs[i] = ref->details.reserve_withdraw.coin_priv; - if (GNUNET_OK != - TALER_string_to_amount (md->amount, - &melt_amounts[i])) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse amount `%s' at %u\n", - md->amount, - is->ip); - fail (is); - return; - } - melt_sigs[i] = ref->details.reserve_withdraw.sig; - melt_pks[i] = *ref->details.reserve_withdraw.pk; - } - for (i=0;i<num_fresh_coins;i++) - { - if (GNUNET_OK != - TALER_string_to_amount (cmd->details.refresh_melt.fresh_amounts[i], - &amount)) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Failed to parse amount `%s' at %u\n", - cmd->details.reserve_withdraw.amount, - is->ip); - fail (is); - return; - } - cmd->details.refresh_melt.fresh_pks[i] - = find_pk (is->keys, - &amount); - fresh_pks[i] = *cmd->details.refresh_melt.fresh_pks[i]; - } - cmd->details.refresh_melt.refresh_data - = TALER_MINT_refresh_prepare (num_melted_coins, - melt_privs, - melt_amounts, - melt_sigs, - melt_pks, - GNUNET_YES, - num_fresh_coins, - fresh_pks, - &cmd->details.refresh_melt.refresh_data_length); - if (NULL == cmd->details.refresh_melt.refresh_data) - { - GNUNET_break (0); - fail (is); - return; - } - cmd->details.refresh_melt.rmh - = TALER_MINT_refresh_melt (mint, - cmd->details.refresh_melt.refresh_data_length, - cmd->details.refresh_melt.refresh_data, - &melt_cb, - is); - if (NULL == cmd->details.refresh_melt.rmh) - { - GNUNET_break (0); - fail (is); - return; - } - } - } - trigger_context_task (); - return; - case OC_REFRESH_REVEAL: - ref = find_command (is, - cmd->details.refresh_reveal.melt_ref); - cmd->details.refresh_reveal.rrh - = TALER_MINT_refresh_reveal (mint, - ref->details.refresh_melt.refresh_data_length, - ref->details.refresh_melt.refresh_data, - ref->details.refresh_melt.noreveal_index, - &reveal_cb, - is); - if (NULL == cmd->details.refresh_reveal.rrh) - { - GNUNET_break (0); - fail (is); - return; - } - trigger_context_task (); - return; - case OC_REFRESH_LINK: - /* find reveal command */ - ref = find_command (is, - cmd->details.refresh_link.reveal_ref); - /* find melt command */ - ref = find_command (is, - ref->details.refresh_reveal.melt_ref); - /* find reserve_withdraw command */ - { - unsigned int idx; - const struct MeltDetails *md; - unsigned int num_melted_coins; - - for (num_melted_coins=0; - NULL != ref->details.refresh_melt.melted_coins[num_melted_coins].amount; - num_melted_coins++) ; - idx = cmd->details.refresh_link.coin_idx; - GNUNET_assert (idx < num_melted_coins); - md = &ref->details.refresh_melt.melted_coins[idx]; - ref = find_command (is, - md->coin_ref); - } - GNUNET_assert (OC_WITHDRAW_SIGN == ref->oc); - /* finally, use private key from withdraw sign command */ - cmd->details.refresh_link.rlh - = TALER_MINT_refresh_link (mint, - &ref->details.reserve_withdraw.coin_priv, - &link_cb, - is); - if (NULL == cmd->details.refresh_link.rlh) - { - GNUNET_break (0); - fail (is); - return; - } - trigger_context_task (); - return; - case OC_WIRE: - cmd->details.wire.wh = TALER_MINT_wire (mint, - &wire_cb, - is); - trigger_context_task (); - return; - case OC_WIRE_DEPOSITS: - if (NULL != cmd->details.wire_deposits.wtid_ref) - { - ref = find_command (is, - cmd->details.wire_deposits.wtid_ref); - GNUNET_assert (NULL != ref); - cmd->details.wire_deposits.wtid = ref->details.deposit_wtid.wtid; - } - cmd->details.wire_deposits.wdh - = TALER_MINT_wire_deposits (mint, - &cmd->details.wire_deposits.wtid, - &wire_deposits_cb, - is); - trigger_context_task (); - return; - case OC_DEPOSIT_WTID: - { - struct GNUNET_HashCode h_wire; - struct GNUNET_HashCode h_contract; - json_t *wire; - json_t *contract; - const struct Command *coin; - struct TALER_CoinSpendPublicKeyP coin_pub; - - ref = find_command (is, - cmd->details.deposit_wtid.deposit_ref); - GNUNET_assert (NULL != ref); - coin = find_command (is, - ref->details.deposit.coin_ref); - GNUNET_assert (NULL != coin); - switch (coin->oc) - { - case OC_WITHDRAW_SIGN: - GNUNET_CRYPTO_eddsa_key_get_public (&coin->details.reserve_withdraw.coin_priv.eddsa_priv, - &coin_pub.eddsa_pub); - break; - case OC_REFRESH_REVEAL: - { - const struct FreshCoin *fc; - unsigned int idx; - - idx = ref->details.deposit.coin_idx; - GNUNET_assert (idx < coin->details.refresh_reveal.num_fresh_coins); - fc = &coin->details.refresh_reveal.fresh_coins[idx]; - - GNUNET_CRYPTO_eddsa_key_get_public (&fc->coin_priv.eddsa_priv, - &coin_pub.eddsa_pub); - } - break; - default: - GNUNET_assert (0); - } - - wire = json_loads (ref->details.deposit.wire_details, - JSON_REJECT_DUPLICATES, - NULL); - GNUNET_assert (NULL != wire); - TALER_hash_json (wire, - &h_wire); - json_decref (wire); - contract = json_loads (ref->details.deposit.contract, - JSON_REJECT_DUPLICATES, - NULL); - GNUNET_assert (NULL != contract); - TALER_hash_json (contract, - &h_contract); - json_decref (contract); - cmd->details.deposit_wtid.dwh - = TALER_MINT_deposit_wtid (mint, - &ref->details.deposit.merchant_priv, - &h_wire, - &h_contract, - &coin_pub, - ref->details.deposit.transaction_id, - &deposit_wtid_cb, - is); - trigger_context_task (); - } - return; - default: - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unknown instruction %d at %u (%s)\n", - cmd->oc, - is->ip, - cmd->label); - fail (is); - return; - } -} - - -/** - * Function run when the test terminates (good or bad). - * Cleans up our state. - * - * @param cls the interpreter state. - * @param tc unused - */ -static void -do_shutdown (void *cls, - const struct GNUNET_SCHEDULER_TaskContext *tc) -{ - struct InterpreterState *is = cls; - struct Command *cmd; - unsigned int i; - - shutdown_task = NULL; - for (i=0;OC_END != (cmd = &is->commands[i])->oc;i++) - { - switch (cmd->oc) - { - case OC_END: - GNUNET_assert (0); - break; - case OC_ADMIN_ADD_INCOMING: - if (NULL != cmd->details.admin_add_incoming.aih) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_admin_add_incoming_cancel (cmd->details.admin_add_incoming.aih); - cmd->details.admin_add_incoming.aih = NULL; - } - break; - case OC_WITHDRAW_STATUS: - if (NULL != cmd->details.reserve_status.wsh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_reserve_status_cancel (cmd->details.reserve_status.wsh); - cmd->details.reserve_status.wsh = NULL; - } - break; - case OC_WITHDRAW_SIGN: - if (NULL != cmd->details.reserve_withdraw.wsh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_reserve_withdraw_cancel (cmd->details.reserve_withdraw.wsh); - cmd->details.reserve_withdraw.wsh = NULL; - } - if (NULL != cmd->details.reserve_withdraw.sig.rsa_signature) - { - GNUNET_CRYPTO_rsa_signature_free (cmd->details.reserve_withdraw.sig.rsa_signature); - cmd->details.reserve_withdraw.sig.rsa_signature = NULL; - } - if (NULL != cmd->details.reserve_withdraw.blinding_key.rsa_blinding_key) - { - GNUNET_CRYPTO_rsa_blinding_key_free (cmd->details.reserve_withdraw.blinding_key.rsa_blinding_key); - cmd->details.reserve_withdraw.blinding_key.rsa_blinding_key = NULL; - } - break; - case OC_DEPOSIT: - if (NULL != cmd->details.deposit.dh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_deposit_cancel (cmd->details.deposit.dh); - cmd->details.deposit.dh = NULL; - } - break; - case OC_REFRESH_MELT: - if (NULL != cmd->details.refresh_melt.rmh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_refresh_melt_cancel (cmd->details.refresh_melt.rmh); - cmd->details.refresh_melt.rmh = NULL; - } - GNUNET_free_non_null (cmd->details.refresh_melt.fresh_pks); - cmd->details.refresh_melt.fresh_pks = NULL; - GNUNET_free_non_null (cmd->details.refresh_melt.refresh_data); - cmd->details.refresh_melt.refresh_data = NULL; - cmd->details.refresh_melt.refresh_data_length = 0; - break; - case OC_REFRESH_REVEAL: - if (NULL != cmd->details.refresh_reveal.rrh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_refresh_reveal_cancel (cmd->details.refresh_reveal.rrh); - cmd->details.refresh_reveal.rrh = NULL; - } - { - unsigned int j; - struct FreshCoin *fresh_coins; - - fresh_coins = cmd->details.refresh_reveal.fresh_coins; - for (j=0;j<cmd->details.refresh_reveal.num_fresh_coins;j++) - GNUNET_CRYPTO_rsa_signature_free (fresh_coins[j].sig.rsa_signature); - } - GNUNET_free_non_null (cmd->details.refresh_reveal.fresh_coins); - cmd->details.refresh_reveal.fresh_coins = NULL; - cmd->details.refresh_reveal.num_fresh_coins = 0; - break; - case OC_REFRESH_LINK: - if (NULL != cmd->details.refresh_link.rlh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_refresh_link_cancel (cmd->details.refresh_link.rlh); - cmd->details.refresh_link.rlh = NULL; - } - break; - case OC_WIRE: - if (NULL != cmd->details.wire.wh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_wire_cancel (cmd->details.wire.wh); - cmd->details.wire.wh = NULL; - } - break; - case OC_WIRE_DEPOSITS: - if (NULL != cmd->details.wire_deposits.wdh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_wire_deposits_cancel (cmd->details.wire_deposits.wdh); - cmd->details.wire_deposits.wdh = NULL; - } - break; - case OC_DEPOSIT_WTID: - if (NULL != cmd->details.deposit_wtid.dwh) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Command %u (%s) did not complete\n", - i, - cmd->label); - TALER_MINT_deposit_wtid_cancel (cmd->details.deposit_wtid.dwh); - cmd->details.deposit_wtid.dwh = NULL; - } - break; - default: - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unknown instruction %d at %u (%s)\n", - cmd->oc, - i, - cmd->label); - break; - } - } - if (NULL != is->task) - { - GNUNET_SCHEDULER_cancel (is->task); - is->task = NULL; - } - GNUNET_free (is); - if (NULL != ctx_task) - { - GNUNET_SCHEDULER_cancel (ctx_task); - ctx_task = NULL; - } - if (NULL != mint) - { - TALER_MINT_disconnect (mint); - mint = NULL; - } - if (NULL != ctx) - { - TALER_MINT_fini (ctx); - ctx = NULL; - } -} - - -/** - * Functions of this type are called to provide the retrieved signing and - * denomination keys of the mint. No TALER_MINT_*() functions should be called - * in this callback. - * - * @param cls closure - * @param keys information about keys of the mint - */ -static void -cert_cb (void *cls, - const struct TALER_MINT_Keys *keys) -{ - struct InterpreterState *is = cls; - - /* check that keys is OK */ -#define ERR(cond) do { if(!(cond)) break; GNUNET_break (0); GNUNET_SCHEDULER_shutdown(); return; } while (0) - ERR (NULL == keys); - ERR (0 == keys->num_sign_keys); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "Read %u signing keys\n", - keys->num_sign_keys); - ERR (0 == keys->num_denom_keys); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "Read %u denomination keys\n", - keys->num_denom_keys); -#undef ERR - - /* run actual tests via interpreter-loop */ - is->keys = keys; - is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, - is); -} - - -/** - * Task that runs the context's event loop with the GNUnet scheduler. - * - * @param cls unused - * @param tc scheduler context (unused) - */ -static void -context_task (void *cls, - const struct GNUNET_SCHEDULER_TaskContext *tc) -{ - long timeout; - int max_fd; - fd_set read_fd_set; - fd_set write_fd_set; - fd_set except_fd_set; - struct GNUNET_NETWORK_FDSet *rs; - struct GNUNET_NETWORK_FDSet *ws; - struct GNUNET_TIME_Relative delay; - - ctx_task = NULL; - TALER_MINT_perform (ctx); - max_fd = -1; - timeout = -1; - FD_ZERO (&read_fd_set); - FD_ZERO (&write_fd_set); - FD_ZERO (&except_fd_set); - TALER_MINT_get_select_info (ctx, - &read_fd_set, - &write_fd_set, - &except_fd_set, - &max_fd, - &timeout); - if (timeout >= 0) - delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, - timeout); - else - delay = GNUNET_TIME_UNIT_FOREVER_REL; - rs = GNUNET_NETWORK_fdset_create (); - GNUNET_NETWORK_fdset_copy_native (rs, - &read_fd_set, - max_fd + 1); - ws = GNUNET_NETWORK_fdset_create (); - GNUNET_NETWORK_fdset_copy_native (ws, - &write_fd_set, - max_fd + 1); - ctx_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT, - delay, - rs, - ws, - &context_task, - cls); - GNUNET_NETWORK_fdset_destroy (rs); - GNUNET_NETWORK_fdset_destroy (ws); -} - - -/** - * Main function that will be run by the scheduler. - * - * @param cls closure - * @param args remaining command-line arguments - * @param cfgfile name of the configuration file used (for saving, can be NULL!) - * @param config configuration - */ -static void -run (void *cls, - const struct GNUNET_SCHEDULER_TaskContext *tc) -{ - struct InterpreterState *is; - static struct MeltDetails melt_coins_1[] = { - { .amount = "EUR:4", - .coin_ref = "refresh-withdraw-coin-1" }, - { NULL, NULL } - }; - static const char *melt_fresh_amounts_1[] = { - "EUR:1", - "EUR:1", - "EUR:1", - "EUR:0.1", - "EUR:0.1", - "EUR:0.1", - "EUR:0.1", - "EUR:0.1", - "EUR:0.1", - "EUR:0.1", - "EUR:0.1", - "EUR:0.01", - "EUR:0.01", - "EUR:0.01", - "EUR:0.01", - "EUR:0.01", - "EUR:0.01", - /* with 0.01 withdraw fees (except for 1ct coins), - this totals up to exactly EUR:3.97, and with - the 0.03 refresh fee, to EUR:4.0*/ - NULL - }; - static struct Command commands[] = - { - /* *************** start of /wire testing ************** */ - -#if WIRE_TEST - { .oc = OC_WIRE, - .label = "wire-test", - /* /wire/test replies with a 302 redirect */ - .expected_response_code = MHD_HTTP_FOUND, - .details.wire.format = "test" }, -#endif -#if WIRE_SEPA - { .oc = OC_WIRE, - .label = "wire-sepa", - /* /wire/sepa replies with a 200 redirect */ - .expected_response_code = MHD_HTTP_OK, - .details.wire.format = "sepa" }, -#endif - /* *************** end of /wire testing ************** */ - -#if WIRE_TEST - /* None of this works if 'test' is not allowed as we do - /admin/add/incoming with format 'test' */ - - /* Fill reserve with EUR:5.01, as withdraw fee is 1 ct per config */ - { .oc = OC_ADMIN_ADD_INCOMING, - .label = "create-reserve-1", - .expected_response_code = MHD_HTTP_OK, - .details.admin_add_incoming.wire = "{ \"type\":\"TEST\", \"bank\":\"source bank\", \"account\":42 }", - .details.admin_add_incoming.amount = "EUR:5.01" }, - /* Withdraw a 5 EUR coin, at fee of 1 ct */ - { .oc = OC_WITHDRAW_SIGN, - .label = "withdraw-coin-1", - .expected_response_code = MHD_HTTP_OK, - .details.reserve_withdraw.reserve_reference = "create-reserve-1", - .details.reserve_withdraw.amount = "EUR:5" }, - /* Check that deposit and withdraw operation are in history, and - that the balance is now at zero */ - { .oc = OC_WITHDRAW_STATUS, - .label = "withdraw-status-1", - .expected_response_code = MHD_HTTP_OK, - .details.reserve_status.reserve_reference = "create-reserve-1", - .details.reserve_status.expected_balance = "EUR:0" }, - /* Try to deposit the 5 EUR coin (in full) */ - { .oc = OC_DEPOSIT, - .label = "deposit-simple", - .expected_response_code = MHD_HTTP_OK, - .details.deposit.amount = "EUR:5", - .details.deposit.coin_ref = "withdraw-coin-1", - .details.deposit.wire_details = "{ \"type\":\"TEST\", \"bank\":\"dest bank\", \"account\":42 }", - .details.deposit.contract = "{ \"items\": [ { \"name\":\"ice cream\", \"value\":1 } ] }", - .details.deposit.transaction_id = 1 }, - - /* Try to overdraw funds ... */ - { .oc = OC_WITHDRAW_SIGN, - .label = "withdraw-coin-2", - .expected_response_code = MHD_HTTP_PAYMENT_REQUIRED, - .details.reserve_withdraw.reserve_reference = "create-reserve-1", - .details.reserve_withdraw.amount = "EUR:5" }, - - /* Try to double-spend the 5 EUR coin with different wire details */ - { .oc = OC_DEPOSIT, - .label = "deposit-double-1", - .expected_response_code = MHD_HTTP_FORBIDDEN, - .details.deposit.amount = "EUR:5", - .details.deposit.coin_ref = "withdraw-coin-1", - .details.deposit.wire_details = "{ \"type\":\"TEST\", \"bank\":\"dest bank\", \"account\":43 }", - .details.deposit.contract = "{ \"items\": [ { \"name\":\"ice cream\", \"value\":1 } ] }", - .details.deposit.transaction_id = 1 }, - /* Try to double-spend the 5 EUR coin at the same merchant (but different - transaction ID) */ - { .oc = OC_DEPOSIT, - .label = "deposit-double-2", - .expected_response_code = MHD_HTTP_FORBIDDEN, - .details.deposit.amount = "EUR:5", - .details.deposit.coin_ref = "withdraw-coin-1", - .details.deposit.wire_details = "{ \"type\":\"TEST\", \"bank\":\"dest bank\", \"account\":42 }", - .details.deposit.contract = "{ \"items\": [ { \"name\":\"ice cream\", \"value\":1 } ] }", - .details.deposit.transaction_id = 2 }, - /* Try to double-spend the 5 EUR coin at the same merchant (but different - contract) */ - { .oc = OC_DEPOSIT, - .label = "deposit-double-3", - .expected_response_code = MHD_HTTP_FORBIDDEN, - .details.deposit.amount = "EUR:5", - .details.deposit.coin_ref = "withdraw-coin-1", - .details.deposit.wire_details = "{ \"type\":\"TEST\", \"bank\":\"dest bank\", \"account\":42 }", - .details.deposit.contract = "{ \"items\":[{ \"name\":\"ice cream\", \"value\":2 } ] }", - .details.deposit.transaction_id = 1 }, - - /* ***************** /refresh testing ******************** */ - - /* Fill reserve with EUR:5.01, as withdraw fee is 1 ct */ - { .oc = OC_ADMIN_ADD_INCOMING, - .label = "refresh-create-reserve-1", - .expected_response_code = MHD_HTTP_OK, - .details.admin_add_incoming.wire = "{ \"type\":\"TEST\", \"bank\":\"source bank\", \"account\":424 }", - .details.admin_add_incoming.amount = "EUR:5.01" }, - /* Withdraw a 5 EUR coin, at fee of 1 ct */ - { .oc = OC_WITHDRAW_SIGN, - .label = "refresh-withdraw-coin-1", - .expected_response_code = MHD_HTTP_OK, - .details.reserve_withdraw.reserve_reference = "refresh-create-reserve-1", - .details.reserve_withdraw.amount = "EUR:5" }, - /* Try to partially spend (deposit) 1 EUR of the 5 EUR coin (in full) - (merchant would receive EUR:0.99 due to 1 ct deposit fee) */ - { .oc = OC_DEPOSIT, - .label = "refresh-deposit-partial", - .expected_response_code = MHD_HTTP_OK, - .details.deposit.amount = "EUR:1", - .details.deposit.coin_ref = "refresh-withdraw-coin-1", - .details.deposit.wire_details = "{ \"type\":\"TEST\", \"bank\":\"dest bank\", \"account\":42 }", - .details.deposit.contract = "{ \"items\" : [ { \"name\":\"ice cream\", \"value\":\"EUR:1\" } ] }", - .details.deposit.transaction_id = 42421 }, - - /* Melt the rest of the coin's value (EUR:4.00 = 3x EUR:1.03 + 7x EUR:0.13) */ - - { .oc = OC_REFRESH_MELT, - .label = "refresh-melt-1", - .expected_response_code = MHD_HTTP_OK, - .details.refresh_melt.melted_coins = melt_coins_1, - .details.refresh_melt.fresh_amounts = melt_fresh_amounts_1 }, - - - /* Complete (successful) melt operation, and withdraw the coins */ - { .oc = OC_REFRESH_REVEAL, - .label = "refresh-reveal-1", - .expected_response_code = MHD_HTTP_OK, - .details.refresh_reveal.melt_ref = "refresh-melt-1" }, - - /* Test that /refresh/link works */ - { .oc = OC_REFRESH_LINK, - .label = "refresh-link-1", - .expected_response_code = MHD_HTTP_OK, - .details.refresh_link.reveal_ref = "refresh-reveal-1" }, - - - /* Test successfully spending coins from the refresh operation: - first EUR:1 */ - { .oc = OC_DEPOSIT, - .label = "refresh-deposit-refreshed-1a", - .expected_response_code = MHD_HTTP_OK, - .details.deposit.amount = "EUR:1", - .details.deposit.coin_ref = "refresh-reveal-1", - .details.deposit.coin_idx = 0, - .details.deposit.wire_details = "{ \"type\":\"TEST\", \"bank\":\"dest bank\", \"account\":42 }", - .details.deposit.contract = "{ \"items\": [ { \"name\":\"ice cream\", \"value\":3 } ] }", - .details.deposit.transaction_id = 2 }, - - /* Test successfully spending coins from the refresh operation: - finally EUR:0.1 */ - { .oc = OC_DEPOSIT, - .label = "refresh-deposit-refreshed-1b", - .expected_response_code = MHD_HTTP_OK, - .details.deposit.amount = "EUR:0.1", - .details.deposit.coin_ref = "refresh-reveal-1", - .details.deposit.coin_idx = 4, - .details.deposit.wire_details = "{ \"type\":\"TEST\", \"bank\":\"dest bank\", \"account\":42 }", - .details.deposit.contract = "{ \"items\": [ { \"name\":\"ice cream\", \"value\":3 } ] }", - .details.deposit.transaction_id = 2 }, - - /* Test running a failing melt operation (same operation again must fail) */ - { .oc = OC_REFRESH_MELT, - .label = "refresh-melt-failing", - .expected_response_code = MHD_HTTP_FORBIDDEN, - .details.refresh_melt.melted_coins = melt_coins_1, - .details.refresh_melt.fresh_amounts = melt_fresh_amounts_1 }, - - // FIXME: also test with coin that was already melted - // (signature differs from coin that was deposited...) - /* *************** end of /refresh testing ************** */ - - /* ************** Test tracking API ******************** */ - /* Try resolving a deposit's WTID, as we never triggered - execution of transactions, the answer should be that - the mint knows about the deposit, but has no WTID yet. */ - { .oc = OC_DEPOSIT_WTID, - .label = "deposit-wtid-found", - .expected_response_code = MHD_HTTP_ACCEPTED, - .details.deposit_wtid.deposit_ref = "deposit-simple" }, - /* Try resolving a deposit's WTID for a failed deposit. - As the deposit failed, the answer should be that - the mint does NOT know about the deposit. */ - { .oc = OC_DEPOSIT_WTID, - .label = "deposit-wtid-failing", - .expected_response_code = MHD_HTTP_NOT_FOUND, - .details.deposit_wtid.deposit_ref = "deposit-double-2" }, - /* Try resolving an undefined (all zeros) WTID; this - should fail as obviously the mint didn't use that - WTID value for any transaction. */ - { .oc = OC_WIRE_DEPOSITS, - .label = "wire-deposit-failing", - .expected_response_code = MHD_HTTP_NOT_FOUND }, - - /* TODO: trigger aggregation logic and then check the - cases where tracking succeeds! */ - - /* ************** End of tracking API testing************* */ - - -#endif - - { .oc = OC_END } - }; - - is = GNUNET_new (struct InterpreterState); - is->commands = commands; - - ctx = TALER_MINT_init (); - GNUNET_assert (NULL != ctx); - ctx_task = GNUNET_SCHEDULER_add_now (&context_task, - ctx); - mint = TALER_MINT_connect (ctx, - "http://localhost:8081", - &cert_cb, is, - TALER_MINT_OPTION_END); - GNUNET_assert (NULL != mint); - shutdown_task - = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply - (GNUNET_TIME_UNIT_SECONDS, 150), - &do_shutdown, is); -} - - -/** - * Main function for the testcase for the mint API. - * - * @param argc expected to be 1 - * @param argv expected to only contain the program name - */ -int -main (int argc, - char * const *argv) -{ - struct GNUNET_OS_Process *proc; - struct GNUNET_OS_Process *mintd; - - GNUNET_log_setup ("test-mint-api", - "WARNING", - NULL); - proc = GNUNET_OS_start_process (GNUNET_NO, - GNUNET_OS_INHERIT_STD_ALL, - NULL, NULL, NULL, - "taler-mint-keyup", - "taler-mint-keyup", - "-d", "test-mint-home", - "-m", "test-mint-home/master.priv", - NULL); - GNUNET_OS_process_wait (proc); - GNUNET_OS_process_destroy (proc); - mintd = GNUNET_OS_start_process (GNUNET_NO, - GNUNET_OS_INHERIT_STD_ALL, - NULL, NULL, NULL, - "taler-mint-httpd", - "taler-mint-httpd", - "-d", "test-mint-home", - NULL); - /* give child time to start and bind against the socket */ - fprintf (stderr, "Waiting for taler-mint-httpd to be ready"); - do - { - fprintf (stderr, "."); - sleep (1); - } - while (0 != system ("wget -q -t 1 -T 1 http://127.0.0.1:8081/keys -o /dev/null -O /dev/null")); - fprintf (stderr, "\n"); - result = GNUNET_SYSERR; - GNUNET_SCHEDULER_run (&run, NULL); - GNUNET_OS_process_kill (mintd, - SIGTERM); - GNUNET_OS_process_wait (mintd); - GNUNET_OS_process_destroy (mintd); - return (GNUNET_OK == result) ? 0 : 1; -} - -/* end of test_mint_api.c */ |