LCOV - code coverage report
Current view: top level - lib - merchant_api_get_transfers.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 61 102 59.8 %
Date: 2025-07-16 19:56:16 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :   This file is part of TALER
       3             :   Copyright (C) 2014-2023 Taler Systems SA
       4             : 
       5             :   TALER is free software; you can redistribute it and/or modify it under the
       6             :   terms of the GNU Lesser General Public License as published by the Free Software
       7             :   Foundation; either version 2.1, or (at your option) any later version.
       8             : 
       9             :   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
      10             :   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
      11             :   A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
      12             : 
      13             :   You should have received a copy of the GNU Lesser General Public License along with
      14             :   TALER; see the file COPYING.LGPL.  If not, see
      15             :   <http://www.gnu.org/licenses/>
      16             : */
      17             : /**
      18             :  * @file merchant_api_get_transfers.c
      19             :  * @brief Implementation of the GET /transfers request of the merchant's HTTP API
      20             :  * @author Marcello Stanisci
      21             :  * @author Christian Grothoff
      22             :  */
      23             : #include "platform.h"
      24             : #include <curl/curl.h>
      25             : #include <jansson.h>
      26             : #include <microhttpd.h> /* just for HTTP status codes */
      27             : #include <gnunet/gnunet_util_lib.h>
      28             : #include <gnunet/gnunet_curl_lib.h>
      29             : #include "taler_merchant_service.h"
      30             : #include "merchant_api_common.h"
      31             : #include "merchant_api_curl_defaults.h"
      32             : #include <taler/taler_json_lib.h>
      33             : #include <taler/taler_signatures.h>
      34             : 
      35             : 
      36             : /**
      37             :  * @brief A Handle for tracking wire transfers.
      38             :  */
      39             : struct TALER_MERCHANT_GetTransfersHandle
      40             : {
      41             : 
      42             :   /**
      43             :    * The url for this request.
      44             :    */
      45             :   char *url;
      46             : 
      47             :   /**
      48             :    * Handle for the request.
      49             :    */
      50             :   struct GNUNET_CURL_Job *job;
      51             : 
      52             :   /**
      53             :    * Function to call with the result.
      54             :    */
      55             :   TALER_MERCHANT_GetTransfersCallback cb;
      56             : 
      57             :   /**
      58             :    * Closure for @a cb.
      59             :    */
      60             :   void *cb_cls;
      61             : 
      62             :   /**
      63             :    * Reference to the execution context.
      64             :    */
      65             :   struct GNUNET_CURL_Context *ctx;
      66             : };
      67             : 
      68             : 
      69             : /**
      70             :  * Function called when we're done processing the
      71             :  * HTTP GET /transfers request.
      72             :  *
      73             :  * @param cls the `struct TALER_MERCHANT_GetTransfersHandle`
      74             :  * @param response_code HTTP response code, 0 on error
      75             :  * @param response response body, NULL if not in JSON
      76             :  */
      77             : static void
      78           4 : handle_transfers_get_finished (void *cls,
      79             :                                long response_code,
      80             :                                const void *response)
      81             : {
      82           4 :   struct TALER_MERCHANT_GetTransfersHandle *gth = cls;
      83           4 :   const json_t *json = response;
      84           4 :   struct TALER_MERCHANT_GetTransfersResponse gtr = {
      85           4 :     .hr.http_status = (unsigned int) response_code,
      86             :     .hr.reply = json
      87             :   };
      88             : 
      89           4 :   gth->job = NULL;
      90           4 :   switch (response_code)
      91             :   {
      92           0 :   case 0:
      93           0 :     gtr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
      94           0 :     break;
      95           4 :   case MHD_HTTP_OK:
      96             :     {
      97             :       const json_t *transfers;
      98             :       struct GNUNET_JSON_Specification spec[] = {
      99           4 :         GNUNET_JSON_spec_array_const ("transfers",
     100             :                                       &transfers),
     101           4 :         GNUNET_JSON_spec_end ()
     102             :       };
     103             : 
     104           4 :       if (GNUNET_OK !=
     105           4 :           GNUNET_JSON_parse (json,
     106             :                              spec,
     107             :                              NULL, NULL))
     108             :       {
     109           0 :         GNUNET_break_op (0);
     110           0 :         gtr.hr.http_status = 0;
     111           0 :         gtr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     112           0 :         break;
     113             :       }
     114             : 
     115             :       {
     116             :         size_t tds_length;
     117             :         struct TALER_MERCHANT_TransferData *tds;
     118             :         json_t *transfer;
     119             :         size_t i;
     120             :         bool ok;
     121             : 
     122           4 :         tds_length = json_array_size (transfers);
     123           4 :         tds = GNUNET_new_array (tds_length,
     124             :                                 struct TALER_MERCHANT_TransferData);
     125           4 :         ok = true;
     126          11 :         json_array_foreach (transfers, i, transfer) {
     127           7 :           struct TALER_MERCHANT_TransferData *td = &tds[i];
     128             :           struct GNUNET_JSON_Specification ispec[] = {
     129           7 :             TALER_JSON_spec_amount_any ("credit_amount",
     130             :                                         &td->credit_amount),
     131           7 :             GNUNET_JSON_spec_fixed_auto ("wtid",
     132             :                                          &td->wtid),
     133           7 :             TALER_JSON_spec_full_payto_uri ("payto_uri",
     134             :                                             &td->payto_uri),
     135           7 :             TALER_JSON_spec_web_url ("exchange_url",
     136             :                                      &td->exchange_url),
     137           7 :             GNUNET_JSON_spec_uint64 ("transfer_serial_id",
     138             :                                      &td->credit_serial),
     139           7 :             GNUNET_JSON_spec_timestamp ("execution_time",
     140             :                                         &td->execution_time),
     141           7 :             GNUNET_JSON_spec_bool ("expected",
     142             :                                    &td->expected),
     143           7 :             GNUNET_JSON_spec_end ()
     144             :           };
     145             : 
     146           7 :           if (GNUNET_OK !=
     147           7 :               GNUNET_JSON_parse (transfer,
     148             :                                  ispec,
     149             :                                  NULL, NULL))
     150             :           {
     151           0 :             GNUNET_break_op (0);
     152           0 :             ok = false;
     153           0 :             break;
     154             :           }
     155             :         }
     156             : 
     157           4 :         if (! ok)
     158             :         {
     159           0 :           GNUNET_break_op (0);
     160           0 :           GNUNET_free (tds);
     161           0 :           gtr.hr.http_status = 0;
     162           0 :           gtr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     163           0 :           break;
     164             :         }
     165           4 :         gtr.details.ok.transfers = tds;
     166           4 :         gtr.details.ok.transfers_length = tds_length;
     167           4 :         gth->cb (gth->cb_cls,
     168             :                  &gtr);
     169           4 :         GNUNET_free (tds);
     170           4 :         TALER_MERCHANT_transfers_get_cancel (gth);
     171           4 :         return;
     172             :       }
     173             :     }
     174           0 :   case MHD_HTTP_UNAUTHORIZED:
     175           0 :     gtr.hr.ec = TALER_JSON_get_error_code (json);
     176           0 :     gtr.hr.hint = TALER_JSON_get_error_hint (json);
     177             :     /* Nothing really to verify, merchant says we need to authenticate. */
     178           0 :     break;
     179           0 :   case MHD_HTTP_NOT_FOUND:
     180             :     /* Nothing really to verify, this should never
     181             :        happen, we should pass the JSON reply to the application */
     182           0 :     gtr.hr.ec = TALER_JSON_get_error_code (json);
     183           0 :     gtr.hr.hint = TALER_JSON_get_error_hint (json);
     184           0 :     break;
     185           0 :   case MHD_HTTP_INTERNAL_SERVER_ERROR:
     186             :     /* Server had an internal issue; we should retry, but this API
     187             :        leaves this to the application */
     188           0 :     gtr.hr.ec = TALER_JSON_get_error_code (json);
     189           0 :     gtr.hr.hint = TALER_JSON_get_error_hint (json);
     190           0 :     break;
     191           0 :   default:
     192             :     /* unexpected response code */
     193           0 :     GNUNET_break_op (0);
     194           0 :     TALER_MERCHANT_parse_error_details_ (json,
     195             :                                          response_code,
     196             :                                          &gtr.hr);
     197           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     198             :                 "Unexpected response code %u/%d\n",
     199             :                 (unsigned int) response_code,
     200             :                 (int) gtr.hr.ec);
     201           0 :     gtr.hr.http_status = 0;
     202           0 :     break;
     203             :   }
     204           0 :   gth->cb (gth->cb_cls,
     205             :            &gtr);
     206           0 :   TALER_MERCHANT_transfers_get_cancel (gth);
     207             : }
     208             : 
     209             : 
     210             : struct TALER_MERCHANT_GetTransfersHandle *
     211           4 : TALER_MERCHANT_transfers_get (
     212             :   struct GNUNET_CURL_Context *ctx,
     213             :   const char *backend_url,
     214             :   struct TALER_FullPayto payto_uri,
     215             :   const struct GNUNET_TIME_Timestamp before,
     216             :   const struct GNUNET_TIME_Timestamp after,
     217             :   int64_t limit,
     218             :   uint64_t offset,
     219             :   enum TALER_EXCHANGE_YesNoAll expected,
     220             :   TALER_MERCHANT_GetTransfersCallback cb,
     221             :   void *cb_cls)
     222             : {
     223             :   struct TALER_MERCHANT_GetTransfersHandle *gth;
     224             :   CURL *eh;
     225           4 :   const char *expected_s = NULL;
     226             :   char limit_s[30];
     227             :   char offset_s[30];
     228             :   char before_s[30];
     229             :   char after_s[30];
     230             : 
     231           4 :   gth = GNUNET_new (struct TALER_MERCHANT_GetTransfersHandle);
     232           4 :   gth->ctx = ctx;
     233           4 :   gth->cb = cb;
     234           4 :   gth->cb_cls = cb_cls;
     235           4 :   expected_s = TALER_yna_to_string (expected);
     236           4 :   GNUNET_snprintf (limit_s,
     237             :                    sizeof (limit_s),
     238             :                    "%lld",
     239             :                    (long long) limit);
     240           4 :   GNUNET_snprintf (offset_s,
     241             :                    sizeof (offset_s),
     242             :                    "%lld",
     243             :                    (unsigned long long) offset);
     244           4 :   GNUNET_snprintf (before_s,
     245             :                    sizeof (before_s),
     246             :                    "%llu",
     247           4 :                    (unsigned long long) GNUNET_TIME_timestamp_to_s (before));
     248           4 :   GNUNET_snprintf (after_s,
     249             :                    sizeof (after_s),
     250             :                    "%llu",
     251           4 :                    (unsigned long long) GNUNET_TIME_timestamp_to_s (after));
     252             :   {
     253           4 :     char *enc_payto = TALER_urlencode (payto_uri.full_payto);
     254             : 
     255           8 :     gth->url = TALER_url_join (backend_url,
     256             :                                "private/transfers",
     257             :                                "payto_uri",
     258             :                                enc_payto,
     259             :                                "expected",
     260             :                                (TALER_EXCHANGE_YNA_ALL != expected)
     261             :                                ? expected_s
     262             :                                : NULL,
     263             :                                "limit",
     264             :                                0 != limit
     265             :                                ? limit_s
     266             :                                : NULL,
     267             :                                "offset",
     268           0 :                                ((0 != offset) && (UINT64_MAX != offset))
     269             :                                ? offset_s
     270             :                                : NULL,
     271             :                                "before",
     272           4 :                                GNUNET_TIME_absolute_is_never (before.abs_time)
     273             :                                ? NULL
     274             :                                : before_s,
     275             :                                "after",
     276           4 :                                GNUNET_TIME_absolute_is_zero (after.abs_time)
     277             :                                ? NULL
     278             :                                : after_s,
     279             :                                NULL);
     280           4 :     GNUNET_free (enc_payto);
     281             :   }
     282           4 :   if (NULL == gth->url)
     283             :   {
     284           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     285             :                 "Could not construct request URL.\n");
     286           0 :     GNUNET_free (gth);
     287           0 :     return NULL;
     288             :   }
     289           4 :   eh = TALER_MERCHANT_curl_easy_get_ (gth->url);
     290           4 :   gth->job = GNUNET_CURL_job_add (ctx,
     291             :                                   eh,
     292             :                                   &handle_transfers_get_finished,
     293             :                                   gth);
     294           4 :   return gth;
     295             : }
     296             : 
     297             : 
     298             : void
     299           4 : TALER_MERCHANT_transfers_get_cancel (
     300             :   struct TALER_MERCHANT_GetTransfersHandle *gth)
     301             : {
     302           4 :   if (NULL != gth->job)
     303             :   {
     304           0 :     GNUNET_CURL_job_cancel (gth->job);
     305           0 :     gth->job = NULL;
     306             :   }
     307           4 :   GNUNET_free (gth->url);
     308           4 :   GNUNET_free (gth);
     309           4 : }
     310             : 
     311             : 
     312             : /* end of merchant_api_get_transfers.c */

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