merchant

merchant_api_post-private-categories.c (6145B)

---

 /*
   This file is part of TALER
   Copyright (C) 2025 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-categories.c
  * @brief Implementation of POST /private/categories
  * @author Bohdan Potuzhnyi
  */
 #include "taler/platform.h"
 #include <curl/curl.h>
 #include <jansson.h>
 #include <microhttpd.h>
 #include <gnunet/gnunet_util_lib.h>
 #include "taler/taler_merchant_service.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/categories operation.
  */
 struct TALER_MERCHANT_CategoriesPostHandle
 {
   /**
    * Fully qualified request URL.
    */
   char *url;
 
   /**
    * CURL job handle.
    */
   struct GNUNET_CURL_Job *job;
 
   /**
    * Callback to invoke with the result.
    */
   TALER_MERCHANT_CategoriesPostCallback cb;
 
   /**
    * Closure for @a cb.
    */
   void *cb_cls;
 
   /**
    * Execution context.
    */
   struct GNUNET_CURL_Context *ctx;
 
   /**
    * Helper keeping POST body and headers alive.
    */
   struct TALER_CURL_PostContext post_ctx;
 };
 
 /**
  * Called when the HTTP transfer finishes.
  *
  * @param cls operation handle
  * @param response_code HTTP status (0 on network / parsing failures)
  * @param response parsed JSON reply (NULL if unavailable)
  */
 static void
 handle_post_categories_finished (void *cls,
                                  long response_code,
                                  const void *response)
 {
   struct TALER_MERCHANT_CategoriesPostHandle *cph = cls;
   const json_t *json = response;
   struct TALER_MERCHANT_CategoriesPostResponse cpr = {
     .hr.http_status = (unsigned int) response_code,
     .hr.reply = json
   };
 
   cph->job = NULL;
   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
               "POST /private/categories completed with status %u\n",
               (unsigned int) response_code);
   switch (response_code)
   {
   case MHD_HTTP_OK:
     {
       const char *err_name;
       unsigned int err_line;
       struct GNUNET_JSON_Specification spec[] = {
         GNUNET_JSON_spec_uint64 ("category_id",
                                  &cpr.category_id),
         GNUNET_JSON_spec_end ()
       };
 
       if (GNUNET_OK !=
           GNUNET_JSON_parse (json,
                              spec,
                              &err_name,
                              &err_line))
       {
         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                     "Invalid response for field %s\n",
                     err_name);
         cpr.hr.http_status = 0;
         cpr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
       }
       break;
     }
   case MHD_HTTP_BAD_REQUEST:
   case MHD_HTTP_UNAUTHORIZED:
   case MHD_HTTP_FORBIDDEN:
   case MHD_HTTP_NOT_FOUND:
   case MHD_HTTP_CONFLICT:
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
     cpr.hr.ec = TALER_JSON_get_error_code (json);
     cpr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case 0:
     cpr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     break;
   default:
     TALER_MERCHANT_parse_error_details_ (json,
                                          response_code,
                                          &cpr.hr);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Unexpected response %u/%d for POST /private/categories\n",
                 (unsigned int) response_code,
                 (int) cpr.hr.ec);
     GNUNET_break_op (0);
     break;
   }
   cph->cb (cph->cb_cls,
            &cpr);
   TALER_MERCHANT_categories_post_cancel (cph);
 }
 
 
 struct TALER_MERCHANT_CategoriesPostHandle *
 TALER_MERCHANT_categories_post (
   struct GNUNET_CURL_Context *ctx,
   const char *backend_url,
   const char *name,
   const json_t *name_i18n,
   TALER_MERCHANT_CategoriesPostCallback cb,
   void *cb_cls)
 {
   struct TALER_MERCHANT_CategoriesPostHandle *cph;
   json_t *req_obj;
 
   req_obj = GNUNET_JSON_PACK (
     GNUNET_JSON_pack_string ("name",
                              name),
     GNUNET_JSON_pack_allow_null (
       GNUNET_JSON_pack_object_incref ("name_i18n",
                                       (json_t *) name_i18n)));
   cph = GNUNET_new (struct TALER_MERCHANT_CategoriesPostHandle);
   cph->ctx = ctx;
   cph->cb = cb;
   cph->cb_cls = cb_cls;
   cph->url = TALER_url_join (backend_url,
                              "private/categories",
                              NULL);
   if (NULL == cph->url)
   {
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Failed to build /private/categories URL\n");
     json_decref (req_obj);
     GNUNET_free (cph);
     return NULL;
   }
   {
     CURL *eh;
 
     eh = TALER_MERCHANT_curl_easy_get_ (cph->url);
     if (GNUNET_OK !=
         TALER_curl_easy_post (&cph->post_ctx,
                               eh,
                               req_obj))
     {
       GNUNET_break (0);
       curl_easy_cleanup (eh);
       json_decref (req_obj);
       GNUNET_free (cph->url);
       GNUNET_free (cph);
       return NULL;
     }
     json_decref (req_obj);
     cph->job = GNUNET_CURL_job_add2 (ctx,
                                      eh,
                                      cph->post_ctx.headers,
                                      &handle_post_categories_finished,
                                      cph);
   }
   return cph;
 }
 
 
 void
 TALER_MERCHANT_categories_post_cancel (
   struct TALER_MERCHANT_CategoriesPostHandle *cph)
 {
   if (NULL != cph->job)
   {
     GNUNET_CURL_job_cancel (cph->job);
     cph->job = NULL;
   }
   TALER_curl_easy_post_finished (&cph->post_ctx);
   GNUNET_free (cph->url);
   GNUNET_free (cph);
 }
 
 
 /* end of merchant_api_post_categories.c */