Line data    Source code

       1             : /*
       2             :   This file is part of TALER
       3             :   Copyright (C) 2022-2023 Taler Systems SA
       4             : 
       5             :   TALER is free software; you can redistribute it and/or modify
       6             :   it under the terms of the GNU Lesser General Public License as
       7             :   published by the Free Software Foundation; either version 2.1,
       8             :   or (at your option) any later version.
       9             : 
      10             :   TALER is distributed in the hope that it will be useful,
      11             :   but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             :   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13             :   GNU Lesser General Public License for more details.
      14             : 
      15             :   You should have received a copy of the GNU Lesser General
      16             :   Public License along with TALER; see the file COPYING.LGPL.
      17             :   If not, see <http://www.gnu.org/licenses/>
      18             : */
      19             : /**
      20             :  * @file merchant_api_post_using_templates.c
      21             :  * @brief Implementation of the POST /using_templates request
      22             :  *        of the merchant's HTTP API
      23             :  * @author Priscilla HUANG
      24             :  */
      25             : #include "platform.h"
      26             : #include <curl/curl.h>
      27             : #include <jansson.h>
      28             : #include <microhttpd.h> /* just for HTTP status codes */
      29             : #include <gnunet/gnunet_util_lib.h>
      30             : #include "taler_merchant_service.h"
      31             : #include "merchant_api_common.h"
      32             : #include "merchant_api_curl_defaults.h"
      33             : #include <taler/taler_json_lib.h>
      34             : #include <taler/taler_curl_lib.h>
      35             : 
      36             : 
      37             : /**
      38             :  * Handle for a POST /templates/$ID operation.
      39             :  */
      40             : struct TALER_MERCHANT_UsingTemplatesPostHandle
      41             : {
      42             : 
      43             :   /**
      44             :    * The url for this request.
      45             :    */
      46             :   char *url;
      47             : 
      48             :   /**
      49             :    * Handle for the request.
      50             :    */
      51             :   struct GNUNET_CURL_Job *job;
      52             : 
      53             :   /**
      54             :    * Function to call with the result.
      55             :    */
      56             :   TALER_MERCHANT_PostOrdersCallback cb;
      57             : 
      58             :   /**
      59             :    * Closure for @a cb.
      60             :    */
      61             :   void *cb_cls;
      62             : 
      63             :   /**
      64             :    * Reference to the execution context.
      65             :    */
      66             :   struct GNUNET_CURL_Context *ctx;
      67             : 
      68             :   /**
      69             :    * Minor context that holds body and headers.
      70             :    */
      71             :   struct TALER_CURL_PostContext post_ctx;
      72             : };
      73             : 
      74             : /**
      75             :  * Function called when we're done processing the
      76             :  * HTTP POST /using-templates request.
      77             :  *
      78             :  * @param cls the `struct TALER_MERCHANT_UsingTemplatesPostHandle`
      79             :  * @param response_code HTTP response code, 0 on error
      80             :  * @param response response body, NULL if not in JSON
      81             :  */
      82             : static void
      83          14 : handle_post_using_templates_finished (void *cls,
      84             :                                       long response_code,
      85             :                                       const void *response)
      86             : {
      87          14 :   struct TALER_MERCHANT_UsingTemplatesPostHandle *utph = cls;
      88          14 :   const json_t *json = response;
      89             : 
      90          14 :   utph->job = NULL;
      91          14 :   TALER_MERCHANT_handle_order_creation_response_ (utph->cb,
      92             :                                                   utph->cb_cls,
      93             :                                                   response_code,
      94             :                                                   json);
      95          14 :   TALER_MERCHANT_using_templates_post_cancel (utph);
      96          14 : }
      97             : 
      98             : 
      99             : struct TALER_MERCHANT_UsingTemplatesPostHandle *
     100          14 : TALER_MERCHANT_using_templates_post (
     101             :   struct GNUNET_CURL_Context *ctx,
     102             :   const char *backend_url,
     103             :   const char *template_id,
     104             :   const char *summary,
     105             :   const struct TALER_Amount *amount,
     106             :   TALER_MERCHANT_PostOrdersCallback cb,
     107             :   void *cb_cls)
     108             : {
     109             :   struct TALER_MERCHANT_UsingTemplatesPostHandle *utph;
     110             :   json_t *req_obj;
     111             : 
     112          14 :   req_obj = GNUNET_JSON_PACK (
     113             :     GNUNET_JSON_pack_allow_null (
     114             :       GNUNET_JSON_pack_string ("summary",
     115             :                                summary)),
     116             :     GNUNET_JSON_pack_allow_null (
     117             :       TALER_JSON_pack_amount ("amount",
     118             :                               amount)));
     119          14 :   utph = GNUNET_new (struct TALER_MERCHANT_UsingTemplatesPostHandle);
     120          14 :   utph->ctx = ctx;
     121          14 :   utph->cb = cb;
     122          14 :   utph->cb_cls = cb_cls;
     123             :   {
     124             :     char *path;
     125             : 
     126          14 :     GNUNET_asprintf (&path,
     127             :                      "templates/%s",
     128             :                      template_id);
     129          14 :     utph->url = TALER_url_join (backend_url,
     130             :                                 path,
     131             :                                 NULL);
     132          14 :     GNUNET_free (path);
     133             :   }
     134          14 :   if (NULL == utph->url)
     135             :   {
     136           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     137             :                 "Could not construct request URL.\n");
     138           0 :     json_decref (req_obj);
     139           0 :     GNUNET_free (utph);
     140           0 :     return NULL;
     141             :   }
     142             :   {
     143             :     CURL *eh;
     144             : 
     145          14 :     eh = TALER_MERCHANT_curl_easy_get_ (utph->url);
     146          14 :     GNUNET_assert (GNUNET_OK ==
     147             :                    TALER_curl_easy_post (&utph->post_ctx,
     148             :                                          eh,
     149             :                                          req_obj));
     150          14 :     json_decref (req_obj);
     151          28 :     utph->job = GNUNET_CURL_job_add2 (ctx,
     152             :                                       eh,
     153          14 :                                       utph->post_ctx.headers,
     154             :                                       &handle_post_using_templates_finished,
     155             :                                       utph);
     156          14 :     GNUNET_assert (NULL != utph->job);
     157             :   }
     158          14 :   return utph;
     159             : }
     160             : 
     161             : 
     162             : void
     163          14 : TALER_MERCHANT_using_templates_post_cancel (
     164             :   struct TALER_MERCHANT_UsingTemplatesPostHandle *utph)
     165             : {
     166          14 :   if (NULL != utph->job)
     167             :   {
     168           0 :     GNUNET_CURL_job_cancel (utph->job);
     169           0 :     utph->job = NULL;
     170             :   }
     171          14 :   TALER_curl_easy_post_finished (&utph->post_ctx);
     172          14 :   GNUNET_free (utph->url);
     173          14 :   GNUNET_free (utph);
     174          14 : }
     175             : 
     176             : 
     177             : /* end of merchant_api_post_using_templates.c */