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author | Christian Grothoff <christian@grothoff.org> | 2020-02-29 16:42:10 +0100 |
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committer | Christian Grothoff <christian@grothoff.org> | 2020-02-29 16:42:10 +0100 |
commit | 0a2b049864c8dae0c53c203d46fca89e0e66849d (patch) | |
tree | 3e836be37902320a4a3a099ee62d960198057952 /src/lib/exchange_api_track_transfer.c | |
parent | de9ab28ab9e55597baf2ca32194ec65b441f0f36 (diff) | |
download | exchange-0a2b049864c8dae0c53c203d46fca89e0e66849d.tar.xz |
big rename fest related to #6067 API renaming
Diffstat (limited to 'src/lib/exchange_api_track_transfer.c')
-rw-r--r-- | src/lib/exchange_api_track_transfer.c | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/src/lib/exchange_api_track_transfer.c b/src/lib/exchange_api_track_transfer.c deleted file mode 100644 index c5d484d23..000000000 --- a/src/lib/exchange_api_track_transfer.c +++ /dev/null @@ -1,400 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015, 2016 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 lib/exchange_api_track_transfer.c - * @brief Implementation of the /track/transfer 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 "exchange_api_handle.h" -#include "taler_signatures.h" -#include "exchange_api_curl_defaults.h" - - -/** - * @brief A /track/transfer Handle - */ -struct TALER_EXCHANGE_TransfersGetHandle -{ - - /** - * 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_TransfersGetCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - -}; - - -/** - * We got a #MHD_HTTP_OK response for the /track/transfer request. - * Check that the response is well-formed and if it is, call the - * callback. If not, return an error code. - * - * This code is very similar to - * merchant_api_track_transfer.c::check_track_transfer_response_ok. - * Any changes should likely be reflected there as well. - * - * @param wdh handle to the operation - * @param json response we got - * @return #GNUNET_OK if we are done and all is well, - * #GNUNET_SYSERR if the response was bogus - */ -static int -check_track_transfer_response_ok (struct - TALER_EXCHANGE_TransfersGetHandle *wdh, - const json_t *json) -{ - json_t *details_j; - struct GNUNET_HashCode h_wire; - struct GNUNET_TIME_Absolute exec_time; - struct TALER_Amount total_amount; - struct TALER_Amount total_expected; - struct TALER_Amount wire_fee; - struct TALER_MerchantPublicKeyP merchant_pub; - unsigned int num_details; - struct TALER_ExchangePublicKeyP exchange_pub; - struct TALER_ExchangeSignatureP exchange_sig; - struct GNUNET_JSON_Specification spec[] = { - TALER_JSON_spec_amount ("total", &total_amount), - TALER_JSON_spec_amount ("wire_fee", &wire_fee), - GNUNET_JSON_spec_fixed_auto ("merchant_pub", &merchant_pub), - GNUNET_JSON_spec_fixed_auto ("h_wire", &h_wire), - GNUNET_JSON_spec_absolute_time ("execution_time", &exec_time), - GNUNET_JSON_spec_json ("deposits", &details_j), - GNUNET_JSON_spec_fixed_auto ("exchange_sig", &exchange_sig), - GNUNET_JSON_spec_fixed_auto ("exchange_pub", &exchange_pub), - GNUNET_JSON_spec_end () - }; - - if (GNUNET_OK != - GNUNET_JSON_parse (json, - spec, - NULL, NULL)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - TALER_amount_get_zero (total_amount.currency, - &total_expected)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - num_details = json_array_size (details_j); - { - struct TALER_TrackTransferDetails details[num_details]; - unsigned int i; - struct GNUNET_HashContext *hash_context; - struct TALER_WireDepositDetailP dd; - struct TALER_WireDepositDataPS wdp; - - hash_context = GNUNET_CRYPTO_hash_context_start (); - for (i = 0; i<num_details; i++) - { - struct TALER_TrackTransferDetails *detail = &details[i]; - struct json_t *detail_j = json_array_get (details_j, i); - struct GNUNET_JSON_Specification spec_detail[] = { - GNUNET_JSON_spec_fixed_auto ("h_contract_terms", - &detail->h_contract_terms), - GNUNET_JSON_spec_fixed_auto ("coin_pub", &detail->coin_pub), - TALER_JSON_spec_amount ("deposit_value", &detail->coin_value), - TALER_JSON_spec_amount ("deposit_fee", &detail->coin_fee), - GNUNET_JSON_spec_end () - }; - - if (GNUNET_OK != - GNUNET_JSON_parse (detail_j, - spec_detail, - NULL, NULL)) - { - GNUNET_break_op (0); - GNUNET_CRYPTO_hash_context_abort (hash_context); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - /* build up big hash for signature checking later */ - dd.h_contract_terms = detail->h_contract_terms; - dd.execution_time = GNUNET_TIME_absolute_hton (exec_time); - dd.coin_pub = detail->coin_pub; - TALER_amount_hton (&dd.deposit_value, - &detail->coin_value); - TALER_amount_hton (&dd.deposit_fee, - &detail->coin_fee); - if ( (GNUNET_OK != - TALER_amount_add (&total_expected, - &total_expected, - &detail->coin_value)) || - (GNUNET_OK != - TALER_amount_subtract (&total_expected, - &total_expected, - &detail->coin_fee)) ) - { - GNUNET_break_op (0); - GNUNET_CRYPTO_hash_context_abort (hash_context); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - GNUNET_CRYPTO_hash_context_read (hash_context, - &dd, - sizeof (struct - TALER_WireDepositDetailP)); - } - /* Check signature */ - wdp.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_WIRE_DEPOSIT); - wdp.purpose.size = htonl (sizeof (struct TALER_WireDepositDataPS)); - TALER_amount_hton (&wdp.total, - &total_amount); - TALER_amount_hton (&wdp.wire_fee, - &wire_fee); - wdp.merchant_pub = merchant_pub; - wdp.h_wire = h_wire; - GNUNET_CRYPTO_hash_context_finish (hash_context, - &wdp.h_details); - if (GNUNET_OK != - TALER_EXCHANGE_test_signing_key (TALER_EXCHANGE_get_keys ( - wdh->exchange), - &exchange_pub)) - { - GNUNET_break_op (0); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != GNUNET_CRYPTO_eddsa_verify - (TALER_SIGNATURE_EXCHANGE_CONFIRM_WIRE_DEPOSIT, - &wdp.purpose, - &exchange_sig.eddsa_signature, - &exchange_pub.eddsa_pub)) - { - GNUNET_break_op (0); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - - if (GNUNET_OK != - TALER_amount_subtract (&total_expected, - &total_expected, - &wire_fee)) - { - GNUNET_break_op (0); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - if (0 != - TALER_amount_cmp (&total_expected, - &total_amount)) - { - GNUNET_break_op (0); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - wdh->cb (wdh->cb_cls, - MHD_HTTP_OK, - TALER_EC_NONE, - &exchange_pub, - json, - &h_wire, - exec_time, - &total_amount, - &wire_fee, - num_details, - details); - } - GNUNET_JSON_parse_free (spec); - TALER_EXCHANGE_transfers_get_cancel (wdh); - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /track/transfer request. - * - * @param cls the `struct TALER_EXCHANGE_TransfersGetHandle` - * @param response_code HTTP response code, 0 on error - * @param response parsed JSON result, NULL on error - */ -static void -handle_track_transfer_finished (void *cls, - long response_code, - const void *response) -{ - struct TALER_EXCHANGE_TransfersGetHandle *wdh = cls; - const json_t *j = response; - - wdh->job = NULL; - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - if (GNUNET_OK == - check_track_transfer_response_ok (wdh, - j)) - return; - GNUNET_break_op (0); - response_code = 0; - 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_FORBIDDEN: - /* Nothing really to verify, exchange 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: - /* Exchange 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", - (unsigned int) response_code); - GNUNET_break (0); - response_code = 0; - break; - } - wdh->cb (wdh->cb_cls, - response_code, - TALER_JSON_get_error_code (j), - NULL, - j, - NULL, - GNUNET_TIME_UNIT_ZERO_ABS, - NULL, - NULL, - 0, NULL); - TALER_EXCHANGE_transfers_get_cancel (wdh); -} - - -/** - * Query the exchange about which transactions were combined - * to create a wire transfer. - * - * @param exchange exchange 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_EXCHANGE_TransfersGetHandle * -TALER_EXCHANGE_transfers_get (struct TALER_EXCHANGE_Handle *exchange, - const struct - TALER_WireTransferIdentifierRawP *wtid, - TALER_EXCHANGE_TransfersGetCallback cb, - void *cb_cls) -{ - struct TALER_EXCHANGE_TransfersGetHandle *wdh; - struct GNUNET_CURL_Context *ctx; - CURL *eh; - char arg_str[sizeof (struct TALER_WireTransferIdentifierRawP) * 2 + 32]; - - if (GNUNET_YES != - TEAH_handle_is_ready (exchange)) - { - GNUNET_break (0); - return NULL; - } - - wdh = GNUNET_new (struct TALER_EXCHANGE_TransfersGetHandle); - wdh->exchange = exchange; - wdh->cb = cb; - wdh->cb_cls = cb_cls; - - { - char wtid_str[sizeof (struct TALER_WireTransferIdentifierRawP) * 2]; - char *end; - - end = GNUNET_STRINGS_data_to_string (wtid, - sizeof (struct - TALER_WireTransferIdentifierRawP), - wtid_str, - sizeof (wtid_str)); - *end = '\0'; - GNUNET_snprintf (arg_str, - sizeof (arg_str), - "/transfers/%s", - wtid_str); - } - wdh->url = TEAH_path_to_url (wdh->exchange, - arg_str); - eh = TEL_curl_easy_get (wdh->url); - ctx = TEAH_handle_to_context (exchange); - wdh->job = GNUNET_CURL_job_add (ctx, - eh, - GNUNET_YES, - &handle_track_transfer_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_EXCHANGE_transfers_get_cancel (struct - TALER_EXCHANGE_TransfersGetHandle *wdh) -{ - if (NULL != wdh->job) - { - GNUNET_CURL_job_cancel (wdh->job); - wdh->job = NULL; - } - GNUNET_free (wdh->url); - GNUNET_free (wdh); -} - - -/* end of exchange_api_wire_deposits.c */ |