diff options
Diffstat (limited to 'src/lib/merchant_api_tip_authorize.c')
| -rw-r--r-- | src/lib/merchant_api_tip_authorize.c | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/src/lib/merchant_api_tip_authorize.c b/src/lib/merchant_api_tip_authorize.c deleted file mode 100644 index 036d40af..00000000 --- a/src/lib/merchant_api_tip_authorize.c +++ /dev/null @@ -1,376 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014-2017, 2020, 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_authorize.c - * @brief Implementation of the /tip-authorize 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 tip authorizations. - */ -struct TALER_MERCHANT_TipAuthorizeHandle -{ - - /** - * The url for this request. - */ - char *url; - - /** - * Handle for the request. - */ - struct GNUNET_CURL_Job *job; - - /** - * Function to call with the result. - */ - TALER_MERCHANT_TipAuthorizeCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Reference to the execution context. - */ - struct GNUNET_CURL_Context *ctx; - - /** - * Minor context that holds body and headers. - */ - struct TALER_CURL_PostContext post_ctx; -}; - - -/** - * 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 tao 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_TipAuthorizeHandle *tao, - const json_t *json) -{ - const char *tip_status_url; - const char *taler_tip_uri; - struct TALER_TipIdentifierP tip_id; - struct GNUNET_TIME_Timestamp expiration_time; - struct GNUNET_JSON_Specification spec[] = { - GNUNET_JSON_spec_string ("tip_status_url", &tip_status_url), - GNUNET_JSON_spec_string ("taler_tip_uri", &taler_tip_uri), - GNUNET_JSON_spec_timestamp ("tip_expiration", &expiration_time), - GNUNET_JSON_spec_fixed_auto ("tip_id", &tip_id), - 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)) - { - char *log; - - GNUNET_break_op (0); - log = json_dumps (json, - 0); - GNUNET_log (GNUNET_ERROR_TYPE_INFO, - "JSON %s\n", - log); - free (log); - return GNUNET_SYSERR; - } - tao->cb (tao->cb_cls, - &hr, - &tip_id, - taler_tip_uri, - expiration_time); - tao->cb = NULL; /* do not call twice */ - GNUNET_JSON_parse_free (spec); - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /reservers/$TIP_ID/tip-authorize request. - * - * @param cls the `struct TALER_MERCHANT_TipAuthorizeHandle` - * @param response_code HTTP response code, 0 on error - * @param response response body, NULL if not in JSON - */ -static void -handle_tip_authorize_finished (void *cls, - long response_code, - const void *response) -{ - struct TALER_MERCHANT_TipAuthorizeHandle *tao = cls; - const json_t *json = response; - struct TALER_MERCHANT_HttpResponse hr = { - .http_status = (unsigned int) response_code, - .reply = json - }; - - tao->job = NULL; - switch (response_code) - { - case MHD_HTTP_OK: - if (GNUNET_OK == - check_ok (tao, - json)) - { - TALER_MERCHANT_tip_authorize_cancel (tao); - return; - } - GNUNET_break_op (0); - hr.http_status = 0; - hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; - break; - case MHD_HTTP_UNAUTHORIZED: - hr.ec = TALER_JSON_get_error_code (json); - hr.hint = TALER_JSON_get_error_hint (json); - /* Nothing really to verify, merchant says we need to authenticate. */ - break; - case MHD_HTTP_NOT_FOUND: - /* Well-defined status code, pass on to application! */ - hr.ec = TALER_JSON_get_error_code (json); - hr.hint = TALER_JSON_get_error_hint (json); - break; - case MHD_HTTP_PRECONDITION_FAILED: - /* Well-defined status code, pass on to application! */ - 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; - case MHD_HTTP_SERVICE_UNAVAILABLE: - /* Server had an unclear (internal or external) issue; we should retry, - but this API leaves this to the application */ - TALER_MERCHANT_parse_error_details_ (json, - response_code, - &hr); - 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 != tao->cb) - tao->cb (tao->cb_cls, - &hr, - NULL, - NULL, - GNUNET_TIME_UNIT_ZERO_TS); - TALER_MERCHANT_tip_authorize_cancel (tao); -} - - -struct TALER_MERCHANT_TipAuthorizeHandle * -TALER_MERCHANT_tip_authorize2 ( - struct GNUNET_CURL_Context *ctx, - const char *backend_url, - const struct TALER_ReservePublicKeyP *reserve_pub, - const char *next_url, - const struct TALER_Amount *amount, - const char *justification, - TALER_MERCHANT_TipAuthorizeCallback authorize_cb, - void *authorize_cb_cls) -{ - struct TALER_MERCHANT_TipAuthorizeHandle *tao; - CURL *eh; - json_t *te_obj; - - tao = GNUNET_new (struct TALER_MERCHANT_TipAuthorizeHandle); - tao->ctx = ctx; - tao->cb = authorize_cb; - tao->cb_cls = authorize_cb_cls; - - { - char res_str[sizeof (*reserve_pub) * 2]; - char arg_str[sizeof (res_str) + 48]; - char *end; - - end = GNUNET_STRINGS_data_to_string (reserve_pub, - sizeof (*reserve_pub), - res_str, - sizeof (res_str)); - *end = '\0'; - GNUNET_snprintf (arg_str, - sizeof (arg_str), - "private/reserves/%s/authorize-tip", - res_str); - tao->url = TALER_url_join (backend_url, - arg_str, - NULL); - } - if (NULL == tao->url) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Could not construct request URL.\n"); - GNUNET_free (tao); - return NULL; - } - te_obj = GNUNET_JSON_PACK ( - TALER_JSON_pack_amount ("amount", - amount), - GNUNET_JSON_pack_string ("justification", - justification), - GNUNET_JSON_pack_string ("next_url", - next_url)); - eh = curl_easy_init (); - GNUNET_assert (NULL != eh); - if (GNUNET_OK != - TALER_curl_easy_post (&tao->post_ctx, - eh, - te_obj)) - { - GNUNET_break (0); - curl_easy_cleanup (eh); - json_decref (te_obj); - GNUNET_free (tao->url); - GNUNET_free (tao); - return NULL; - } - - json_decref (te_obj); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "Requesting URL '%s'\n", - tao->url); - GNUNET_assert (CURLE_OK == curl_easy_setopt (eh, - CURLOPT_URL, - tao->url)); - - tao->job = GNUNET_CURL_job_add2 (ctx, - eh, - tao->post_ctx.headers, - &handle_tip_authorize_finished, - tao); - return tao; -} - - -struct TALER_MERCHANT_TipAuthorizeHandle * -TALER_MERCHANT_tip_authorize (struct GNUNET_CURL_Context *ctx, - const char *backend_url, - const char *next_url, - const struct TALER_Amount *amount, - const char *justification, - TALER_MERCHANT_TipAuthorizeCallback authorize_cb, - void *authorize_cb_cls) -{ - struct TALER_MERCHANT_TipAuthorizeHandle *tao; - CURL *eh; - json_t *te_obj; - - tao = GNUNET_new (struct TALER_MERCHANT_TipAuthorizeHandle); - tao->ctx = ctx; - tao->cb = authorize_cb; - tao->cb_cls = authorize_cb_cls; - - tao->url = TALER_url_join (backend_url, - "private/tips", - NULL); - if (NULL == tao->url) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Could not construct request URL.\n"); - GNUNET_free (tao); - return NULL; - } - te_obj = GNUNET_JSON_PACK ( - TALER_JSON_pack_amount ("amount", - amount), - GNUNET_JSON_pack_string ("justification", - justification), - GNUNET_JSON_pack_string ("next_url", - next_url)); - eh = TALER_MERCHANT_curl_easy_get_ (tao->url); - if (GNUNET_OK != - TALER_curl_easy_post (&tao->post_ctx, - eh, - te_obj)) - { - GNUNET_break (0); - curl_easy_cleanup (eh); - json_decref (te_obj); - GNUNET_free (tao->url); - GNUNET_free (tao); - return NULL; - } - json_decref (te_obj); - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, - "Requesting URL '%s'\n", - tao->url); - tao->job = GNUNET_CURL_job_add2 (ctx, - eh, - tao->post_ctx.headers, - &handle_tip_authorize_finished, - tao); - return tao; -} - - -void -TALER_MERCHANT_tip_authorize_cancel ( - struct TALER_MERCHANT_TipAuthorizeHandle *tao) -{ - if (NULL != tao->job) - { - GNUNET_CURL_job_cancel (tao->job); - tao->job = NULL; - } - TALER_curl_easy_post_finished (&tao->post_ctx); - GNUNET_free (tao->url); - GNUNET_free (tao); -} - - -/* end of merchant_api_tip_authorize.c */ |