merchant

merchant_api_get-private-accounts-H_WIRE.c (7100B)

---

 /*
   This file is part of TALER
   Copyright (C) 2022-2026 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_get-private-accounts-H_WIRE-new.c
  * @brief Implementation of the GET /private/accounts/$H_WIRE 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/get-private-accounts-H_WIRE.h>
 #include "merchant_api_curl_defaults.h"
 #include <taler/taler_json_lib.h>
 
 
 /**
  * Handle for a GET /private/accounts/$H_WIRE operation.
  */
 struct TALER_MERCHANT_GetPrivateAccountHandle
 {
   /**
    * Base URL of the merchant backend.
    */
   char *base_url;
 
   /**
    * Instance identifier.
    */
   char *instance_id;
 
   /**
    * Hash of the wire details identifying the account.
    */
   struct TALER_MerchantWireHashP h_wire;
 
   /**
    * 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_GetPrivateAccountCallback cb;
 
   /**
    * Closure for @a cb.
    */
   TALER_MERCHANT_GET_PRIVATE_ACCOUNT_RESULT_CLOSURE *cb_cls;
 
   /**
    * Reference to the execution context.
    */
   struct GNUNET_CURL_Context *ctx;
 };
 
 
 /**
  * Function called when we're done processing the
  * HTTP GET /private/accounts/$H_WIRE request.
  *
  * @param cls the `struct TALER_MERCHANT_GetPrivateAccountHandle`
  * @param response_code HTTP response code, 0 on error
  * @param response response body, NULL if not in JSON
  */
 static void
 handle_get_account_finished (void *cls,
                              long response_code,
                              const void *response)
 {
   struct TALER_MERCHANT_GetPrivateAccountHandle *gpa = cls;
   const json_t *json = response;
   struct TALER_MERCHANT_GetPrivateAccountResponse agr = {
     .hr.http_status = (unsigned int) response_code,
     .hr.reply = json
   };
 
   gpa->job = NULL;
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
               "Got /private/accounts/$H_WIRE response with status code %u\n",
               (unsigned int) response_code);
   switch (response_code)
   {
   case MHD_HTTP_OK:
     {
       struct GNUNET_JSON_Specification spec[] = {
         GNUNET_JSON_spec_fixed_auto ("salt",
                                      &agr.details.ok.ad.salt),
         GNUNET_JSON_spec_mark_optional (
           TALER_JSON_spec_web_url ("credit_facade_url",
                                    &agr.details.ok.ad.credit_facade_url),
           NULL),
         TALER_JSON_spec_full_payto_uri ("payto_uri",
                                         &agr.details.ok.ad.payto_uri),
         GNUNET_JSON_spec_fixed_auto ("h_wire",
                                      &agr.details.ok.ad.h_wire),
         GNUNET_JSON_spec_bool ("active",
                                &agr.details.ok.ad.active),
         GNUNET_JSON_spec_mark_optional (
           GNUNET_JSON_spec_object_const (
             "extra_wire_subject_metadata",
             &agr.details.ok.ad.extra_wire_subject_metadata),
           NULL),
         GNUNET_JSON_spec_end ()
       };
 
       if (GNUNET_OK ==
           GNUNET_JSON_parse (json,
                              spec,
                              NULL, NULL))
       {
         gpa->cb (gpa->cb_cls,
                  &agr);
         TALER_MERCHANT_get_private_account_cancel (gpa);
         return;
       }
       agr.hr.http_status = 0;
       agr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
       break;
     }
   case MHD_HTTP_UNAUTHORIZED:
     agr.hr.ec = TALER_JSON_get_error_code (json);
     agr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_NOT_FOUND:
     agr.hr.ec = TALER_JSON_get_error_code (json);
     agr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   default:
     agr.hr.ec = TALER_JSON_get_error_code (json);
     agr.hr.hint = TALER_JSON_get_error_hint (json);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Unexpected response code %u/%d\n",
                 (unsigned int) response_code,
                 (int) agr.hr.ec);
     break;
   }
   gpa->cb (gpa->cb_cls,
            &agr);
   TALER_MERCHANT_get_private_account_cancel (gpa);
 }
 
 
 struct TALER_MERCHANT_GetPrivateAccountHandle *
 TALER_MERCHANT_get_private_account_create (
   struct GNUNET_CURL_Context *ctx,
   const char *url,
   const char *instance_id,
   const struct TALER_MerchantWireHashP *h_wire)
 {
   struct TALER_MERCHANT_GetPrivateAccountHandle *gpa;
 
   gpa = GNUNET_new (struct TALER_MERCHANT_GetPrivateAccountHandle);
   gpa->ctx = ctx;
   gpa->base_url = GNUNET_strdup (url);
   gpa->instance_id = GNUNET_strdup (instance_id);
   gpa->h_wire = *h_wire;
   return gpa;
 }
 
 
 enum TALER_ErrorCode
 TALER_MERCHANT_get_private_account_start (
   struct TALER_MERCHANT_GetPrivateAccountHandle *gpa,
   TALER_MERCHANT_GetPrivateAccountCallback cb,
   TALER_MERCHANT_GET_PRIVATE_ACCOUNT_RESULT_CLOSURE *cb_cls)
 {
   CURL *eh;
 
   gpa->cb = cb;
   gpa->cb_cls = cb_cls;
   {
     char w_str[sizeof (gpa->h_wire) * 2];
     char *path;
     char *end;
 
     end = GNUNET_STRINGS_data_to_string (&gpa->h_wire,
                                          sizeof (gpa->h_wire),
                                          w_str,
                                          sizeof (w_str));
     *end = '\0';
     GNUNET_asprintf (&path,
                      "private/accounts/%s",
                      w_str);
     gpa->url = TALER_url_join (gpa->base_url,
                                path,
                                NULL);
     GNUNET_free (path);
   }
   if (NULL == gpa->url)
     return TALER_EC_GENERIC_CONFIGURATION_INVALID;
   eh = TALER_MERCHANT_curl_easy_get_ (gpa->url);
   if (NULL == eh)
     return TALER_EC_GENERIC_CONFIGURATION_INVALID;
   gpa->job = GNUNET_CURL_job_add (gpa->ctx,
                                   eh,
                                   &handle_get_account_finished,
                                   gpa);
   if (NULL == gpa->job)
     return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
   return TALER_EC_NONE;
 }
 
 
 void
 TALER_MERCHANT_get_private_account_cancel (
   struct TALER_MERCHANT_GetPrivateAccountHandle *gpa)
 {
   if (NULL != gpa->job)
   {
     GNUNET_CURL_job_cancel (gpa->job);
     gpa->job = NULL;
   }
   GNUNET_free (gpa->url);
   GNUNET_free (gpa->instance_id);
   GNUNET_free (gpa->base_url);
   GNUNET_free (gpa);
 }
 
 
 /* end of merchant_api_get-private-accounts-H_WIRE-new.c */