merchant

merchant_api_post-private-donau.c (7523B)

---

 /*
   This file is part of TALER
   Copyright (C) 2024-2026 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_post-private-donau.c
  * @brief Implementation of the POST /private/donau request
  * @author Christian Grothoff
  */
 #include "taler/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/taler-merchant/post-private-donau.h>
 #include "merchant_api_curl_defaults.h"
 #include "merchant_api_common.h"
 #include <taler/taler_json_lib.h>
 #include <taler/taler_curl_lib.h>
 
 
 /**
  * Handle for a POST /private/donau operation.
  */
 struct TALER_MERCHANT_PostPrivateDonauHandle
 {
   /**
    * Base URL of the merchant backend.
    */
   char *base_url;
 
   /**
    * The full URL for this request.
    */
   char *url;
 
   /**
    * Handle for the request.
    */
   struct GNUNET_CURL_Job *job;
 
   /**
    * Function to call with the result.
    */
   TALER_MERCHANT_PostPrivateDonauCallback cb;
 
   /**
    * Closure for @a cb.
    */
   TALER_MERCHANT_POST_PRIVATE_DONAU_RESULT_CLOSURE *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;
 
   /**
    * Charity information to register.
    */
   struct TALER_MERCHANT_Charity charity;
 
   /**
    * Charity URL (owned copy).
    */
   char *charity_url;
 };
 
 
 /**
  * Function called when we're done processing the
  * HTTP POST /private/donau request.
  *
  * @param cls the `struct TALER_MERCHANT_PostPrivateDonauHandle`
  * @param response_code HTTP response code, 0 on error
  * @param response response body, NULL if not in JSON
  */
 static void
 handle_post_donau_finished (void *cls,
                             long response_code,
                             const void *response)
 {
   struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh = cls;
   const json_t *json = response;
   struct TALER_MERCHANT_PostPrivateDonauResponse pdr = {
     .hr.http_status = (unsigned int) response_code,
     .hr.reply = json
   };
 
   ppdh->job = NULL;
   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
               "POST /private/donau completed with response code %u\n",
               (unsigned int) response_code);
   switch (response_code)
   {
   case 0:
     pdr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_ACCEPTED:
     if (GNUNET_OK !=
         TALER_MERCHANT_parse_mfa_challenge_response_ (
           json,
           &pdr.details.accepted))
     {
       GNUNET_break_op (0);
       pdr.hr.http_status = 0;
       pdr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     }
     break;
   case MHD_HTTP_NO_CONTENT:
     break;
   case MHD_HTTP_BAD_REQUEST:
     pdr.hr.ec = TALER_JSON_get_error_code (json);
     pdr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_CONFLICT:
     pdr.hr.ec = TALER_JSON_get_error_code (json);
     pdr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
     pdr.hr.ec = TALER_JSON_get_error_code (json);
     pdr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_BAD_GATEWAY:
     pdr.hr.ec = TALER_JSON_get_error_code (json);
     pdr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   default:
     TALER_MERCHANT_parse_error_details_ (json,
                                          response_code,
                                          &pdr.hr);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Unexpected response code %u/%d\n",
                 (unsigned int) response_code,
                 (int) pdr.hr.ec);
     GNUNET_break_op (0);
     break;
   }
   ppdh->cb (ppdh->cb_cls,
             &pdr);
   if (MHD_HTTP_ACCEPTED == response_code)
     TALER_MERCHANT_mfa_challenge_response_free (
       &pdr.details.accepted);
   TALER_MERCHANT_post_private_donau_cancel (ppdh);
 }
 
 
 struct TALER_MERCHANT_PostPrivateDonauHandle *
 TALER_MERCHANT_post_private_donau_create (
   struct GNUNET_CURL_Context *ctx,
   const char *url,
   const struct TALER_MERCHANT_Charity *charity)
 {
   struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh;
 
   ppdh = GNUNET_new (struct TALER_MERCHANT_PostPrivateDonauHandle);
   ppdh->ctx = ctx;
   ppdh->base_url = GNUNET_strdup (url);
   ppdh->charity_url = GNUNET_strdup (charity->charity_url);
   ppdh->charity.charity_url = ppdh->charity_url;
   ppdh->charity.charity_id = charity->charity_id;
   return ppdh;
 }
 
 
 enum GNUNET_GenericReturnValue
 TALER_MERCHANT_post_private_donau_set_options_ (
   struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh,
   unsigned int num_options,
   const struct TALER_MERCHANT_PostPrivateDonauOptionValue *options)
 {
   for (unsigned int i = 0; i < num_options; i++)
   {
     switch (options[i].option)
     {
     case TALER_MERCHANT_POST_PRIVATE_DONAU_OPTION_END:
       return GNUNET_OK;
     default:
       GNUNET_break (0);
       return GNUNET_SYSERR;
     }
   }
   return GNUNET_OK;
 }
 
 
 enum TALER_ErrorCode
 TALER_MERCHANT_post_private_donau_start (
   struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh,
   TALER_MERCHANT_PostPrivateDonauCallback cb,
   TALER_MERCHANT_POST_PRIVATE_DONAU_RESULT_CLOSURE *cb_cls)
 {
   json_t *req_obj;
   CURL *eh;
 
   ppdh->cb = cb;
   ppdh->cb_cls = cb_cls;
   ppdh->url = TALER_url_join (ppdh->base_url,
                               "private/donau",
                               NULL);
   if (NULL == ppdh->url)
     return TALER_EC_GENERIC_CONFIGURATION_INVALID;
   req_obj = GNUNET_JSON_PACK (
     GNUNET_JSON_pack_string ("donau_url",
                              ppdh->charity.charity_url),
     GNUNET_JSON_pack_uint64 ("charity_id",
                              ppdh->charity.charity_id)
     );
   eh = TALER_MERCHANT_curl_easy_get_ (ppdh->url);
   if ( (NULL == eh) ||
        (GNUNET_OK !=
         TALER_curl_easy_post (&ppdh->post_ctx,
                               eh,
                               req_obj)) )
   {
     GNUNET_break (0);
     json_decref (req_obj);
     if (NULL != eh)
       curl_easy_cleanup (eh);
     return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
   }
   json_decref (req_obj);
   ppdh->job = GNUNET_CURL_job_add2 (ppdh->ctx,
                                     eh,
                                     ppdh->post_ctx.headers,
                                     &handle_post_donau_finished,
                                     ppdh);
   if (NULL == ppdh->job)
     return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
   return TALER_EC_NONE;
 }
 
 
 void
 TALER_MERCHANT_post_private_donau_cancel (
   struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh)
 {
   if (NULL != ppdh->job)
   {
     GNUNET_CURL_job_cancel (ppdh->job);
     ppdh->job = NULL;
   }
   TALER_curl_easy_post_finished (&ppdh->post_ctx);
   GNUNET_free (ppdh->charity_url);
   GNUNET_free (ppdh->url);
   GNUNET_free (ppdh->base_url);
   GNUNET_free (ppdh);
 }
 
 
 /* end of merchant_api_post-private-donau.c */