diff options
Diffstat (limited to 'src/mint/taler-mint-httpd_deposit.c')
| -rw-r--r-- | src/mint/taler-mint-httpd_deposit.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/src/mint/taler-mint-httpd_deposit.c b/src/mint/taler-mint-httpd_deposit.c deleted file mode 100644 index 40c5a4db..00000000 --- a/src/mint/taler-mint-httpd_deposit.c +++ /dev/null @@ -1,281 +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 taler-mint-httpd_deposit.c - * @brief Handle /deposit requests; parses the POST and JSON and - * verifies the coin signature before handing things off - * to the database. - * @author Florian Dold - * @author Benedikt Mueller - * @author Christian Grothoff - * - * TODO: - * - ugly if-construction for deposit type - */ -#include "platform.h" -#include <gnunet/gnunet_util_lib.h> -#include <jansson.h> -#include <microhttpd.h> -#include <pthread.h> -#include "taler-mint-httpd_parsing.h" -#include "taler-mint-httpd_deposit.h" -#include "taler-mint-httpd_responses.h" -#include "taler-mint-httpd_keystate.h" -#include "taler-mint-httpd_validation.h" - - -/** - * We have parsed the JSON information about the deposit, do some - * basic sanity checks (especially that the signature on the coin is - * valid, and that this type of coin exists) and then execute the - * deposit. - * - * @param connection the MHD connection to handle - * @param deposit information about the deposit - * @return MHD result code - */ -static int -verify_and_execute_deposit (struct MHD_Connection *connection, - const struct TALER_MINTDB_Deposit *deposit) -{ - struct TMH_KS_StateHandle *key_state; - struct TALER_DepositRequestPS dr; - struct TALER_MINTDB_DenominationKeyIssueInformation *dki; - struct TALER_Amount fee_deposit; - - dr.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_COIN_DEPOSIT); - dr.purpose.size = htonl (sizeof (struct TALER_DepositRequestPS)); - dr.h_contract = deposit->h_contract; - dr.h_wire = deposit->h_wire; - dr.timestamp = GNUNET_TIME_absolute_hton (deposit->timestamp); - dr.refund_deadline = GNUNET_TIME_absolute_hton (deposit->refund_deadline); - dr.transaction_id = GNUNET_htonll (deposit->transaction_id); - TALER_amount_hton (&dr.amount_with_fee, - &deposit->amount_with_fee); - TALER_amount_hton (&dr.deposit_fee, - &deposit->deposit_fee); - dr.merchant = deposit->merchant_pub; - dr.coin_pub = deposit->coin.coin_pub; - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_COIN_DEPOSIT, - &dr.purpose, - &deposit->csig.eddsa_signature, - &deposit->coin.coin_pub.eddsa_pub)) - { - TALER_LOG_WARNING ("Invalid signature on /deposit request\n"); - return TMH_RESPONSE_reply_signature_invalid (connection, - "coin_sig"); - } - /* check denomination exists and is valid */ - key_state = TMH_KS_acquire (); - dki = TMH_KS_denomination_key_lookup (key_state, - &deposit->coin.denom_pub, - TMH_KS_DKU_DEPOSIT); - if (NULL == dki) - { - TMH_KS_release (key_state); - TALER_LOG_WARNING ("Unknown denomination key in /deposit request\n"); - return TMH_RESPONSE_reply_arg_unknown (connection, - "denom_pub"); - } - /* check coin signature */ - if (GNUNET_YES != - TALER_test_coin_valid (&deposit->coin)) - { - TALER_LOG_WARNING ("Invalid coin passed for /deposit\n"); - TMH_KS_release (key_state); - return TMH_RESPONSE_reply_signature_invalid (connection, - "ub_sig"); - } - TALER_amount_ntoh (&fee_deposit, - &dki->issue.properties.fee_deposit); - if (0 < TALER_amount_cmp (&fee_deposit, - &deposit->amount_with_fee)) - { - TMH_KS_release (key_state); - return TMH_RESPONSE_reply_external_error (connection, - "deposited amount smaller than depositing fee"); - } - TMH_KS_release (key_state); - - return TMH_DB_execute_deposit (connection, - deposit); -} - - -/** - * Handle a "/deposit" request. This function parses the - * JSON information and then calls #verify_and_execute_deposit() - * to verify the signatures and execute the deposit. - * - * @param connection the MHD connection to handle - * @param root root of the posted JSON - * @param amount how much should be deposited - * @param wire json describing the wire details (?) - * @return MHD result code - */ -static int -parse_and_handle_deposit_request (struct MHD_Connection *connection, - const json_t *root, - const struct TALER_Amount *amount, - json_t *wire) -{ - int res; - struct TALER_MINTDB_Deposit deposit; - struct TALER_MINTDB_DenominationKeyIssueInformation *dki; - struct TMH_KS_StateHandle *ks; - struct GNUNET_HashCode my_h_wire; - struct TMH_PARSE_FieldSpecification spec[] = { - TMH_PARSE_member_denomination_public_key ("denom_pub", &deposit.coin.denom_pub), - TMH_PARSE_member_denomination_signature ("ub_sig", &deposit.coin.denom_sig), - TMH_PARSE_member_fixed ("coin_pub", &deposit.coin.coin_pub), - TMH_PARSE_member_fixed ("merchant_pub", &deposit.merchant_pub), - TMH_PARSE_member_fixed ("H_contract", &deposit.h_contract), - TMH_PARSE_member_fixed ("H_wire", &deposit.h_wire), - TMH_PARSE_member_fixed ("coin_sig", &deposit.csig), - TMH_PARSE_member_uint64 ("transaction_id", &deposit.transaction_id), - TMH_PARSE_member_time_abs ("timestamp", &deposit.timestamp), - TMH_PARSE_member_time_abs ("refund_deadline", &deposit.refund_deadline), - TMH_PARSE_member_time_abs ("edate", &deposit.wire_deadline), - TMH_PARSE_MEMBER_END - }; - - memset (&deposit, 0, sizeof (deposit)); - res = TMH_PARSE_json_data (connection, - root, - spec); - if (GNUNET_SYSERR == res) - return MHD_NO; /* hard failure */ - if (GNUNET_NO == res) - return MHD_YES; /* failure */ - - if (GNUNET_YES != - TMH_json_validate_wireformat (wire)) - { - TMH_PARSE_release_data (spec); - return TMH_RESPONSE_reply_arg_unknown (connection, - "wire"); - } - if (GNUNET_OK != - TALER_hash_json (wire, - &my_h_wire)) - { - TALER_LOG_WARNING ("Failed to parse JSON wire format specification for /deposit request\n"); - TMH_PARSE_release_data (spec); - return TMH_RESPONSE_reply_arg_invalid (connection, - "wire"); - } - if (0 != memcmp (&deposit.h_wire, - &my_h_wire, - sizeof (struct GNUNET_HashCode))) - { - /* Client hashed contract differently than we did, reject */ - TMH_PARSE_release_data (spec); - return TMH_RESPONSE_reply_arg_invalid (connection, - "H_wire"); - } - ks = TMH_KS_acquire (); - dki = TMH_KS_denomination_key_lookup (ks, - &deposit.coin.denom_pub, - TMH_KS_DKU_DEPOSIT); - if (NULL == dki) - { - TMH_KS_release (ks); - TMH_PARSE_release_data (spec); - return TMH_RESPONSE_reply_arg_unknown (connection, - "denom_pub"); - } - TALER_amount_ntoh (&deposit.deposit_fee, - &dki->issue.properties.fee_deposit); - TMH_KS_release (ks); - deposit.wire = wire; - deposit.amount_with_fee = *amount; - if (-1 == TALER_amount_cmp (&deposit.amount_with_fee, - &deposit.deposit_fee)) - { - /* Total amount smaller than fee, invalid */ - TMH_PARSE_release_data (spec); - return TMH_RESPONSE_reply_arg_invalid (connection, - "f"); - } - res = verify_and_execute_deposit (connection, - &deposit); - TMH_PARSE_release_data (spec); - return res; -} - - -/** - * Handle a "/deposit" request. Parses the JSON in the post to find - * the "type" (either DIRECT_DEPOSIT or INCREMENTAL_DEPOSIT), and, if - * successful, passes the JSON data to - * #parse_and_handle_deposit_request() to further check the details - * of the operation specified in the "wire" field of the JSON data. - * If everything checks out, this will ultimately lead to the - * "/deposit" being executed, or rejected. - * - * @param rh context of the handler - * @param connection the MHD connection to handle - * @param[in,out] connection_cls the connection's closure (can be updated) - * @param upload_data upload data - * @param[in,out] upload_data_size number of bytes (left) in @a upload_data - * @return MHD result code - */ -int -TMH_DEPOSIT_handler_deposit (struct TMH_RequestHandler *rh, - struct MHD_Connection *connection, - void **connection_cls, - const char *upload_data, - size_t *upload_data_size) -{ - json_t *json; - json_t *wire; - int res; - struct TALER_Amount amount; - struct TMH_PARSE_FieldSpecification spec[] = { - TMH_PARSE_member_object ("wire", &wire), - TMH_PARSE_member_amount ("f", &amount), - TMH_PARSE_MEMBER_END - }; - - res = TMH_PARSE_post_json (connection, - connection_cls, - upload_data, - upload_data_size, - &json); - if (GNUNET_SYSERR == res) - return MHD_NO; - if ( (GNUNET_NO == res) || (NULL == json) ) - return MHD_YES; - res = TMH_PARSE_json_data (connection, - json, - spec); - if (GNUNET_OK != res) - { - json_decref (json); - return (GNUNET_NO == res) ? MHD_YES : MHD_NO; - } - res = parse_and_handle_deposit_request (connection, - json, - &amount, - wire); - TMH_PARSE_release_data (spec); - json_decref (json); - return res; -} - - -/* end of taler-mint-httpd_deposit.c */ |