diff options
| author | Christian Grothoff <christian@grothoff.org> | 2019-01-11 21:27:34 +0100 | 
|---|---|---|
| committer | Christian Grothoff <christian@grothoff.org> | 2019-01-11 21:43:15 +0100 | 
| commit | 54fc83ee6b910d482948c6ec8185df7aab1b0cb1 (patch) | |
| tree | 10c04cad1392659a9ccef469271f866e393ebb48 /src/exchange-lib/exchange_api_wire.c | |
| parent | 57ab9f9fdba607fcc3817adf58f37c5390f8d220 (diff) | |
fix cyclic dependency by combining exchange-lib and auditor-lib directories
Diffstat (limited to 'src/exchange-lib/exchange_api_wire.c')
| -rw-r--r-- | src/exchange-lib/exchange_api_wire.c | 442 | 
1 files changed, 0 insertions, 442 deletions
| diff --git a/src/exchange-lib/exchange_api_wire.c b/src/exchange-lib/exchange_api_wire.c deleted file mode 100644 index 0d4644db..00000000 --- a/src/exchange-lib/exchange_api_wire.c +++ /dev/null @@ -1,442 +0,0 @@ -/* -  This file is part of TALER -  Copyright (C) 2014-2018 Taler Systems SA - -  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, see -  <http://www.gnu.org/licenses/> -*/ -/** - * @file exchange-lib/exchange_api_wire.c - * @brief Implementation of the /wire request of the exchange's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include <gnunet/gnunet_curl_lib.h> -#include "taler_exchange_service.h" -#include "taler_json_lib.h" -#include "taler_wire_lib.h" -#include "taler_signatures.h" -#include "taler_wire_plugin.h" -#include "exchange_api_handle.h" -#include "curl_defaults.h" - - -/** - * @brief A Wire Handle - */ -struct TALER_EXCHANGE_WireHandle -{ - -  /** -   * The connection to exchange this request handle will use -   */ -  struct TALER_EXCHANGE_Handle *exchange; - -  /** -   * The url for this request. -   */ -  char *url; - -  /** -   * Handle for the request. -   */ -  struct GNUNET_CURL_Job *job; - -  /** -   * Function to call with the result. -   */ -  TALER_EXCHANGE_WireResultCallback cb; - -  /** -   * Closure for @a cb. -   */ -  void *cb_cls; - -}; - - -/** - * List of wire fees by method. - */ -struct FeeMap -{ -  /** -   * Next entry in list. -   */ -  struct FeeMap *next; - -  /** -   * Wire method this fee structure is for. -   */ -  char *method; - -  /** -   * Array of wire fees, also linked list, but allocated -   * only once. -   */ -  struct TALER_EXCHANGE_WireAggregateFees *fee_list; -}; - - -/** - * Frees @a fm. - * - * @param fm memory to release - */ -static void -free_fees (struct FeeMap *fm) -{ -  while (NULL != fm) -  { -    struct FeeMap *fe = fm->next; - -    GNUNET_free (fm->fee_list); -    GNUNET_free (fm->method); -    GNUNET_free (fm); -    fm = fe; -  } -} - - -/** - * Parse wire @a fees and return map. - * - * @param fees json AggregateTransferFee to parse - * @return NULL on error - */ -static struct FeeMap * -parse_fees (json_t *fees) -{ -  struct FeeMap *fm = NULL; -  const char *key; -  json_t *fee_array; - -  json_object_foreach (fees, key, fee_array) { -    struct FeeMap *fe = GNUNET_new (struct FeeMap); -    int len; -    unsigned int idx; -    json_t *fee; - -    if (0 == (len = json_array_size (fee_array))) -    { -      GNUNET_break_op (0); -      GNUNET_free (fe); -      continue; /* skip */ -    } -    fe->method = GNUNET_strdup (key); -    fe->next = fm; -    fe->fee_list = GNUNET_new_array (len, -                                     struct TALER_EXCHANGE_WireAggregateFees); -    fm = fe; -    json_array_foreach (fee_array, idx, fee) -    { -      struct TALER_EXCHANGE_WireAggregateFees *wa = &fe->fee_list[idx]; -      struct GNUNET_JSON_Specification spec[] = { -        GNUNET_JSON_spec_fixed_auto ("sig", -                                     &wa->master_sig), -        TALER_JSON_spec_amount ("wire_fee", -                                &wa->wire_fee), -        TALER_JSON_spec_amount ("closing_fee", -                              &wa->closing_fee), -        GNUNET_JSON_spec_absolute_time ("start_date", -                                        &wa->start_date), -        GNUNET_JSON_spec_absolute_time ("end_date", -                                        &wa->end_date), -        GNUNET_JSON_spec_end() -      }; - -      if (GNUNET_OK != -          GNUNET_JSON_parse (fee, -                             spec, -                             NULL, -                             NULL)) -      { -        GNUNET_break_op (0); -        free_fees (fm); -        return NULL; -      } -      if (idx + 1 < len) -        wa->next = &fe->fee_list[idx + 1]; -      else -        wa->next = NULL; -    } -  } -  return fm; -} - - -/** - * Find fee by @a method. - * - * @param fm map to look in - * @param method key to look for - * @return NULL if fee is not specified in @a fm - */ -static const struct TALER_EXCHANGE_WireAggregateFees * -lookup_fee (const struct FeeMap *fm, -            const char *method) -{ -  for (;NULL != fm; fm = fm->next) -    if (0 == strcasecmp (fm->method, -                         method)) -      return fm->fee_list; -  return NULL; -} - - -/** - * Function called when we're done processing the - * HTTP /wire request. - * - * @param cls the `struct TALER_EXCHANGE_WireHandle` - * @param response_code HTTP response code, 0 on error - * @param response parsed JSON result, NULL on error - */ -static void -handle_wire_finished (void *cls, -                      long response_code, -                      const void *response) -{ -  struct TALER_EXCHANGE_WireHandle *wh = cls; -  enum TALER_ErrorCode ec; -  const json_t *j = response; - -  TALER_LOG_DEBUG ("Checking raw /wire response\n"); -  wh->job = NULL; -  ec = TALER_EC_NONE; -  switch (response_code) -  { -  case 0: -    break; -  case MHD_HTTP_OK: -    { -      json_t *accounts; -      json_t *fees; -      int num_accounts; -      struct FeeMap *fm; -      const struct TALER_EXCHANGE_Keys *key_state; -      struct GNUNET_JSON_Specification spec[] = { -        GNUNET_JSON_spec_json ("accounts", &accounts), -        GNUNET_JSON_spec_json ("fees", &fees), -        GNUNET_JSON_spec_end() -      }; - -      if (GNUNET_OK != -          GNUNET_JSON_parse (j, -                             spec, -                             NULL, NULL)) -      { -        /* bogus reply */ -        GNUNET_break_op (0); -        response_code = 0; -        ec = TALER_EC_SERVER_JSON_INVALID; -        break; -      } -      if (0 == (num_accounts = json_array_size (accounts))) -      { -        /* bogus reply */ -        GNUNET_break_op (0); -        GNUNET_JSON_parse_free (spec); -        response_code = 0; -        ec = TALER_EC_SERVER_JSON_INVALID; -        break; -      } -      if (NULL == (fm = parse_fees (fees))) -      { -        /* bogus reply */ -        GNUNET_break_op (0); -        GNUNET_JSON_parse_free (spec); -        response_code = 0; -        ec = TALER_EC_SERVER_JSON_INVALID; -        break; -      } - -      key_state = TALER_EXCHANGE_get_keys (wh->exchange); -      /* parse accounts */ -      { -        struct TALER_EXCHANGE_WireAccount was[num_accounts]; - -        for (unsigned int i=0;i<num_accounts;i++) -        { -          struct TALER_EXCHANGE_WireAccount *wa = &was[i]; -          json_t *account; -          struct GNUNET_JSON_Specification spec_account[] = { -            GNUNET_JSON_spec_string ("url", &wa->url), -            GNUNET_JSON_spec_fixed_auto ("master_sig", &wa->master_sig), -            GNUNET_JSON_spec_end() -          }; -          char *method; - -          account = json_array_get (accounts, -                                    i); -          if (GNUNET_OK != -              TALER_JSON_exchange_wire_signature_check (account, -                                                        &key_state->master_pub)) -          { -            /* bogus reply */ -            GNUNET_break_op (0); -            response_code = 0; -            ec = TALER_EC_SERVER_SIGNATURE_INVALID; -            break; -          } -          if (GNUNET_OK != -              GNUNET_JSON_parse (account, -                                 spec_account, -                                 NULL, NULL)) -          { -            /* bogus reply */ -            GNUNET_break_op (0); -            response_code = 0; -            ec = TALER_EC_SERVER_JSON_INVALID; -            break; -          } -          if (NULL == (method = TALER_WIRE_payto_get_method (wa->url))) -          { -            /* bogus reply */ -            GNUNET_break_op (0); -            response_code = 0; -            ec = TALER_EC_SERVER_JSON_INVALID; -            break; -          } -          if (NULL == (wa->fees = lookup_fee (fm, -                                              method))) -          { -            /* bogus reply */ -            GNUNET_break_op (0); -            response_code = 0; -            ec = TALER_EC_SERVER_JSON_INVALID; -            GNUNET_free (method); -            break; -          } -          GNUNET_free (method); -        } /* end 'for all accounts */ -        if ( (0 != response_code) && -             (NULL != wh->cb) ) -        { -          wh->cb (wh->cb_cls, -                  response_code, -                  TALER_EC_NONE, -                  num_accounts, -                  was); -          wh->cb = NULL; -        } -      } /* end of 'parse accounts */ -      free_fees (fm); -      GNUNET_JSON_parse_free (spec); -    } /* end of MHD_HTTP_OK */ -    break; -  case MHD_HTTP_BAD_REQUEST: -    /* This should never happen, either us or the exchange 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", -                (unsigned int) response_code); -    GNUNET_break (0); -    response_code = 0; -    break; -  } -  if (NULL != wh->cb) -    wh->cb (wh->cb_cls, -            response_code, -            (0 == response_code) ? ec : TALER_JSON_get_error_code (j), -            0, -            NULL); -  TALER_EXCHANGE_wire_cancel (wh); -} - - -/** - * Obtain information about a exchange's wire instructions. - * A exchange may provide wire instructions for creating - * a reserve.  The wire instructions also indicate - * which wire formats merchants may use with the exchange. - * 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 exchange's reply is not well-formed, - * we return an HTTP status code of zero to @a cb. - * - * @param exchange the exchange handle; the exchange 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_EXCHANGE_WireHandle * -TALER_EXCHANGE_wire (struct TALER_EXCHANGE_Handle *exchange, -                     TALER_EXCHANGE_WireResultCallback wire_cb, -                     void *wire_cb_cls) -{ -  struct TALER_EXCHANGE_WireHandle *wh; -  struct GNUNET_CURL_Context *ctx; -  CURL *eh; - -  if (GNUNET_YES != -      TEAH_handle_is_ready (exchange)) -  { -    GNUNET_break (0); -    return NULL; -  } -  wh = GNUNET_new (struct TALER_EXCHANGE_WireHandle); -  wh->exchange = exchange; -  wh->cb = wire_cb; -  wh->cb_cls = wire_cb_cls; -  wh->url = TEAH_path_to_url (exchange, "/wire"); - -  eh = TEL_curl_easy_get (wh->url); -  ctx = TEAH_handle_to_context (exchange); -  wh->job = GNUNET_CURL_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_EXCHANGE_wire_cancel (struct TALER_EXCHANGE_WireHandle *wh) -{ -  if (NULL != wh->job) -  { -    GNUNET_CURL_job_cancel (wh->job); -    wh->job = NULL; -  } -  GNUNET_free (wh->url); -  GNUNET_free (wh); -} - - -/* end of exchange_api_wire.c */ | 
