diff options
Diffstat (limited to 'src/lib/merchant_api_tip_pickup2.c')
| -rw-r--r-- | src/lib/merchant_api_tip_pickup2.c | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/src/lib/merchant_api_tip_pickup2.c b/src/lib/merchant_api_tip_pickup2.c deleted file mode 100644 index 33457024..00000000 --- a/src/lib/merchant_api_tip_pickup2.c +++ /dev/null @@ -1,353 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014-2021 Taler Systems SA - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU Lesser General Public License as published by the Free Software - Foundation; either version 2.1, 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 Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License along with - TALER; see the file COPYING.LGPL. If not, see - <http://www.gnu.org/licenses/> -*/ -/** - * @file merchant_api_tip_pickup2.c - * @brief Implementation of the /tip-pickup request of the merchant's HTTP API - * @author Marcello Stanisci - * @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 <gnunet/gnunet_curl_lib.h> -#include "taler_merchant_service.h" -#include "merchant_api_curl_defaults.h" -#include "merchant_api_common.h" -#include <taler/taler_json_lib.h> -#include <taler/taler_signatures.h> -#include <taler/taler_curl_lib.h> - - -/** - * @brief A handle for tracking transactions. - */ -struct TALER_MERCHANT_TipPickup2Handle -{ - - /** - * The url for this request. - */ - char *url; - - /** - * Minor context that holds body and headers. - */ - struct TALER_CURL_PostContext post_ctx; - - /** - * Handle for the request. - */ - struct GNUNET_CURL_Job *job; - - /** - * Function to call with the result. - */ - TALER_MERCHANT_TipPickup2Callback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Reference to the execution context. - */ - struct GNUNET_CURL_Context *ctx; - - /** - * Expected number of planchets. - */ - unsigned int num_planchets; -}; - - -/** - * We got a 200 response back from the exchange (or the merchant). - * Now we need to parse the response and if it is well-formed, - * call the callback (and set it to NULL afterwards). - * - * @param tpo handle of the original authorization operation - * @param json cryptographic proof returned by the exchange/merchant - * @return #GNUNET_OK if response is valid - */ -static int -check_ok (struct TALER_MERCHANT_TipPickup2Handle *tpo, - const json_t *json) -{ - json_t *ja; - unsigned int ja_len; - struct GNUNET_JSON_Specification spec[] = { - GNUNET_JSON_spec_json ("blind_sigs", &ja), - GNUNET_JSON_spec_end () - }; - struct TALER_MERCHANT_HttpResponse hr = { - .http_status = MHD_HTTP_OK, - .reply = json - }; - - if (GNUNET_OK != - GNUNET_JSON_parse (json, - spec, - NULL, NULL)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - ja_len = json_array_size (ja); - if (ja_len != tpo->num_planchets) - { - GNUNET_break_op (0); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - { - struct TALER_BlindedDenominationSignature mblind_sigs[ja_len]; - - for (unsigned int i = 0; i<ja_len; i++) - { - json_t *pj = json_array_get (ja, i); - struct GNUNET_JSON_Specification ispec[] = { - TALER_JSON_spec_blinded_denom_sig ("blind_sig", - &mblind_sigs[i]), - GNUNET_JSON_spec_end () - }; - - if (GNUNET_OK != - GNUNET_JSON_parse (pj, - ispec, - NULL, NULL)) - { - GNUNET_break_op (0); - GNUNET_JSON_parse_free (spec); - return GNUNET_SYSERR; - } - } - tpo->cb (tpo->cb_cls, - &hr, - ja_len, - mblind_sigs); - for (unsigned int i = 0; i<ja_len; i++) - TALER_blinded_denom_sig_free (&mblind_sigs[i]); - tpo->cb = NULL; /* do not call twice */ - } - GNUNET_JSON_parse_free (spec); - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /track/transaction request. - * - * @param cls the `struct TALER_MERCHANT_TipPickupHandle` - * @param response_code HTTP response code, 0 on error - * @param response response body, NULL if not in JSON - */ -static void -handle_tip_pickup_finished (void *cls, - long response_code, - const void *response) -{ - struct TALER_MERCHANT_TipPickup2Handle *tpo = cls; - const json_t *json = response; - struct TALER_MERCHANT_HttpResponse hr = { - .http_status = (unsigned int) response_code, - .reply = json - }; - - tpo->job = NULL; - switch (response_code) - { - case MHD_HTTP_OK: - if (GNUNET_OK != check_ok (tpo, - json)) - { - GNUNET_break_op (0); - hr.http_status = 0; - hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; - } - break; - case MHD_HTTP_BAD_REQUEST: - /* Can happen if we pickup an amount that exceeds the tip... */ - hr.ec = TALER_JSON_get_error_code (json); - hr.hint = TALER_JSON_get_error_hint (json); - GNUNET_break (TALER_EC_MERCHANT_TIP_PICKUP_AMOUNT_EXCEEDS_TIP_REMAINING == - hr.ec); - break; - case MHD_HTTP_CONFLICT: - /* legal, can happen if we pickup a tip twice... */ - hr.ec = TALER_JSON_get_error_code (json); - hr.hint = TALER_JSON_get_error_hint (json); - break; - case MHD_HTTP_NOT_FOUND: - /* legal, can happen if tip ID is unknown */ - hr.ec = TALER_JSON_get_error_code (json); - hr.hint = TALER_JSON_get_error_hint (json); - break; - case MHD_HTTP_INTERNAL_SERVER_ERROR: - /* Server had an internal issue; we should retry, but this API - leaves this to the application */ - hr.ec = TALER_JSON_get_error_code (json); - hr.hint = TALER_JSON_get_error_hint (json); - break; - default: - /* unexpected response code */ - GNUNET_break_op (0); - TALER_MERCHANT_parse_error_details_ (json, - response_code, - &hr); - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Unexpected response code %u/%d\n", - (unsigned int) response_code, - (int) hr.ec); - break; - } - if (NULL != tpo->cb) - { - tpo->cb (tpo->cb_cls, - &hr, - 0, - NULL); - tpo->cb = NULL; - } - TALER_MERCHANT_tip_pickup2_cancel (tpo); -} - - -struct TALER_MERCHANT_TipPickup2Handle * -TALER_MERCHANT_tip_pickup2 (struct GNUNET_CURL_Context *ctx, - const char *backend_url, - const struct TALER_TipIdentifierP *tip_id, - unsigned int num_planchets, - const struct TALER_PlanchetDetail planchets[], - TALER_MERCHANT_TipPickup2Callback pickup_cb, - void *pickup_cb_cls) -{ - struct TALER_MERCHANT_TipPickup2Handle *tpo; - CURL *eh; - json_t *pa; - json_t *tp_obj; - - if (0 == num_planchets) - { - GNUNET_break (0); - return NULL; - } - pa = json_array (); - for (unsigned int i = 0; i<num_planchets; i++) - { - const struct TALER_PlanchetDetail *planchet = &planchets[i]; - json_t *p; - - p = GNUNET_JSON_PACK ( - GNUNET_JSON_pack_data_auto ("denom_pub_hash", - &planchet->denom_pub_hash), - TALER_JSON_pack_blinded_planchet ("coin_ev", - &planchet->blinded_planchet)); - if (0 != - json_array_append_new (pa, - p)) - { - GNUNET_break (0); - json_decref (pa); - return NULL; - } - } - tp_obj = GNUNET_JSON_PACK ( - GNUNET_JSON_pack_array_steal ("planchets", - pa)); - tpo = GNUNET_new (struct TALER_MERCHANT_TipPickup2Handle); - tpo->num_planchets = num_planchets; - tpo->ctx = ctx; - tpo->cb = pickup_cb; - tpo->cb_cls = pickup_cb_cls; - - { - char tip_str[sizeof (*tip_id) * 2]; - char arg_str[sizeof (tip_str) + 32]; - char *end; - - end = GNUNET_STRINGS_data_to_string (tip_id, - sizeof (*tip_id), - tip_str, - sizeof (tip_str)); - *end = '\0'; - GNUNET_snprintf (arg_str, - sizeof (arg_str), - "tips/%s/pickup", - tip_str); - tpo->url = TALER_url_join (backend_url, - arg_str, - NULL); - } - if (NULL == tpo->url) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Could not construct request URL.\n"); - json_decref (tp_obj); - GNUNET_free (tpo); - return NULL; - } - eh = TALER_MERCHANT_curl_easy_get_ (tpo->url); - if (GNUNET_OK != - TALER_curl_easy_post (&tpo->post_ctx, - eh, - tp_obj)) - { - GNUNET_break (0); - json_decref (tp_obj); - curl_easy_cleanup (eh); - GNUNET_free (tpo->url); - GNUNET_free (tpo); - return NULL; - } - json_decref (tp_obj); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "Requesting URL '%s'\n", - tpo->url); - tpo->job = GNUNET_CURL_job_add2 (ctx, - eh, - tpo->post_ctx.headers, - &handle_tip_pickup_finished, - tpo); - if (NULL == tpo->job) - { - TALER_MERCHANT_tip_pickup2_cancel (tpo); - return NULL; - } - return tpo; -} - - -void -TALER_MERCHANT_tip_pickup2_cancel ( - struct TALER_MERCHANT_TipPickup2Handle *tpo) -{ - if (NULL != tpo->job) - { - GNUNET_CURL_job_cancel (tpo->job); - tpo->job = NULL; - } - TALER_curl_easy_post_finished (&tpo->post_ctx); - GNUNET_free (tpo->url); - GNUNET_free (tpo); -} - - -/* end of merchant_api_tip_pickup2.c */ |