merchant

merchant_api_post-private-transfers.c (7205B)

---

 /*
   This file is part of TALER
   Copyright (C) 2014-2026 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-transfers-new.c
  * @brief Implementation of the POST /private/transfers 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-transfers.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/transfers operation.
  */
 struct TALER_MERCHANT_PostPrivateTransfersHandle
 {
   /**
    * 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_PostPrivateTransfersCallback cb;
 
   /**
    * Closure for @a cb.
    */
   TALER_MERCHANT_POST_PRIVATE_TRANSFERS_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;
 
   /**
    * Amount credited in this transfer.
    */
   struct TALER_Amount credit_amount;
 
   /**
    * Wire transfer identifier.
    */
   struct TALER_WireTransferIdentifierRawP wtid;
 
   /**
    * Payto URI of the merchant account.
    */
   struct TALER_FullPayto payto_uri;
 
   /**
    * Base URL of the exchange.
    */
   char *exchange_url;
 };
 
 
 /**
  * Function called when we're done processing the
  * HTTP POST /private/transfers request.
  *
  * @param cls the `struct TALER_MERCHANT_PostPrivateTransfersHandle`
  * @param response_code HTTP response code, 0 on error
  * @param response response body, NULL if not in JSON
  */
 static void
 handle_post_transfers_finished (void *cls,
                                 long response_code,
                                 const void *response)
 {
   struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth = cls;
   const json_t *json = response;
   struct TALER_MERCHANT_PostPrivateTransfersResponse ptr = {
     .hr.http_status = (unsigned int) response_code,
     .hr.reply = json
   };
 
   ppth->job = NULL;
   switch (response_code)
   {
   case 0:
     ptr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_NO_CONTENT:
     break;
   case MHD_HTTP_UNAUTHORIZED:
     ptr.hr.ec = TALER_JSON_get_error_code (json);
     ptr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_NOT_FOUND:
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                 "Did not find any data\n");
     ptr.hr.ec = TALER_JSON_get_error_code (json);
     ptr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_CONFLICT:
     ptr.hr.ec = TALER_JSON_get_error_code (json);
     ptr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
     ptr.hr.ec = TALER_JSON_get_error_code (json);
     ptr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   default:
     GNUNET_break_op (0);
     TALER_MERCHANT_parse_error_details_ (json,
                                          response_code,
                                          &ptr.hr);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Unexpected response code %u/%d\n",
                 (unsigned int) ptr.hr.http_status,
                 (int) ptr.hr.ec);
     break;
   }
   ppth->cb (ppth->cb_cls,
             &ptr);
   TALER_MERCHANT_post_private_transfers_cancel (ppth);
 }
 
 
 struct TALER_MERCHANT_PostPrivateTransfersHandle *
 TALER_MERCHANT_post_private_transfers_create (
   struct GNUNET_CURL_Context *ctx,
   const char *url,
   const struct TALER_Amount *credit_amount,
   const struct TALER_WireTransferIdentifierRawP *wtid,
   struct TALER_FullPayto payto_uri,
   const char *exchange_url)
 {
   struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth;
 
   ppth = GNUNET_new (struct TALER_MERCHANT_PostPrivateTransfersHandle);
   ppth->ctx = ctx;
   ppth->base_url = GNUNET_strdup (url);
   ppth->credit_amount = *credit_amount;
   ppth->wtid = *wtid;
   ppth->payto_uri.full_payto = GNUNET_strdup (payto_uri.full_payto);
   ppth->exchange_url = GNUNET_strdup (exchange_url);
   return ppth;
 }
 
 
 enum TALER_ErrorCode
 TALER_MERCHANT_post_private_transfers_start (
   struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth,
   TALER_MERCHANT_PostPrivateTransfersCallback cb,
   TALER_MERCHANT_POST_PRIVATE_TRANSFERS_RESULT_CLOSURE *cb_cls)
 {
   json_t *req_obj;
   CURL *eh;
 
   ppth->cb = cb;
   ppth->cb_cls = cb_cls;
   ppth->url = TALER_url_join (ppth->base_url,
                               "private/transfers",
                               NULL);
   if (NULL == ppth->url)
     return TALER_EC_GENERIC_CONFIGURATION_INVALID;
   req_obj = GNUNET_JSON_PACK (
     TALER_JSON_pack_amount ("credit_amount",
                             &ppth->credit_amount),
     GNUNET_JSON_pack_data_auto ("wtid",
                                 &ppth->wtid),
     TALER_JSON_pack_full_payto ("payto_uri",
                                 ppth->payto_uri),
     GNUNET_JSON_pack_string ("exchange_url",
                              ppth->exchange_url));
   eh = TALER_MERCHANT_curl_easy_get_ (ppth->url);
   if ( (NULL == eh) ||
        (GNUNET_OK !=
         TALER_curl_easy_post (&ppth->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);
   ppth->job = GNUNET_CURL_job_add2 (ppth->ctx,
                                     eh,
                                     ppth->post_ctx.headers,
                                     &handle_post_transfers_finished,
                                     ppth);
   if (NULL == ppth->job)
     return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
   return TALER_EC_NONE;
 }
 
 
 void
 TALER_MERCHANT_post_private_transfers_cancel (
   struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth)
 {
   if (NULL != ppth->job)
   {
     GNUNET_CURL_job_cancel (ppth->job);
     ppth->job = NULL;
   }
   TALER_curl_easy_post_finished (&ppth->post_ctx);
   GNUNET_free (ppth->payto_uri.full_payto);
   GNUNET_free (ppth->exchange_url);
   GNUNET_free (ppth->url);
   GNUNET_free (ppth->base_url);
   GNUNET_free (ppth);
 }
 
 
 /* end of merchant_api_post-private-transfers-new.c */