LCOV - code coverage report
Current view: top level - lib - merchant_api_wallet_get_order.c (source / functions) Hit Total Coverage
Test: GNU Taler merchant coverage report Lines: 0 95 0.0 %
Date: 2022-08-25 06:17:04 Functions: 0 4 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :   This file is part of TALER
       3             :   Copyright (C) 2018, 2020, 2022 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_wallet_get_order.c
      19             :  * @brief Implementation of the GET /orders/$ID request
      20             :  * @author Christian Grothoff
      21             :  * @author Marcello Stanisci
      22             :  * @author Florian Dold
      23             :  */
      24             : #include "platform.h"
      25             : #include <curl/curl.h>
      26             : #include <jansson.h>
      27             : #include <microhttpd.h> /* just for HTTP status codes */
      28             : #include <gnunet/gnunet_util_lib.h>
      29             : #include <gnunet/gnunet_curl_lib.h>
      30             : #include "taler_merchant_service.h"
      31             : #include "merchant_api_curl_defaults.h"
      32             : #include <taler/taler_json_lib.h>
      33             : #include <taler/taler_signatures.h>
      34             : 
      35             : 
      36             : /**
      37             :  * @brief A GET /orders/$ID handle
      38             :  */
      39             : struct TALER_MERCHANT_OrderWalletGetHandle
      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_OrderWalletGetCallback 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             :  * Convenience function to call the callback in @a owgh with an error code of
      71             :  * @a ec and the exchange body being set to @a reply.
      72             :  *
      73             :  * @param owgh handle providing callback
      74             :  * @param ec error code to return to application
      75             :  * @param reply JSON reply we got from the exchange, can be NULL
      76             :  */
      77             : static void
      78           0 : cb_failure (struct TALER_MERCHANT_OrderWalletGetHandle *owgh,
      79             :             enum TALER_ErrorCode ec,
      80             :             const json_t *reply)
      81             : {
      82           0 :   struct TALER_MERCHANT_OrderWalletGetResponse owgr = {
      83             :     .hr.ec = ec,
      84             :     .hr.reply = reply
      85             :   };
      86             : 
      87           0 :   owgh->cb (owgh->cb_cls,
      88             :             &owgr);
      89           0 : }
      90             : 
      91             : 
      92             : /**
      93             :  * Function called when we're done processing the GET /check-payment request.
      94             :  *
      95             :  * @param cls the `struct TALER_MERCHANT_OrderWalletGetHandle`
      96             :  * @param response_code HTTP response code, 0 on error
      97             :  * @param response response body, should be NULL
      98             :  */
      99             : static void
     100           0 : handle_wallet_get_order_finished (void *cls,
     101             :                                   long response_code,
     102             :                                   const void *response)
     103             : {
     104           0 :   struct TALER_MERCHANT_OrderWalletGetHandle *owgh = cls;
     105           0 :   const json_t *json = response;
     106             : 
     107           0 :   owgh->job = NULL;
     108           0 :   switch (response_code)
     109             :   {
     110           0 :   case MHD_HTTP_OK:
     111             :     {
     112           0 :       struct TALER_MERCHANT_OrderWalletGetResponse owgr = {
     113             :         .hr.reply = json,
     114             :         .hr.http_status = MHD_HTTP_OK
     115             :       };
     116             :       struct GNUNET_JSON_Specification spec[] = {
     117           0 :         GNUNET_JSON_spec_bool ("refunded",
     118             :                                &owgr.details.success.refunded),
     119           0 :         GNUNET_JSON_spec_bool ("refund_pending",
     120             :                                &owgr.details.success.refund_pending),
     121           0 :         TALER_JSON_spec_amount_any ("refund_amount",
     122             :                                     &owgr.details.success.refund_amount),
     123           0 :         GNUNET_JSON_spec_end ()
     124             :       };
     125             : 
     126           0 :       if (GNUNET_OK !=
     127           0 :           GNUNET_JSON_parse (json,
     128             :                              spec,
     129             :                              NULL, NULL))
     130             :       {
     131           0 :         GNUNET_break_op (0);
     132           0 :         cb_failure (owgh,
     133             :                     TALER_EC_GENERIC_REPLY_MALFORMED,
     134             :                     json);
     135           0 :         TALER_MERCHANT_wallet_order_get_cancel (owgh);
     136           0 :         return;
     137             :       }
     138           0 :       owgh->cb (owgh->cb_cls,
     139             :                 &owgr);
     140           0 :       GNUNET_JSON_parse_free (spec);
     141           0 :       break;
     142             :     }
     143           0 :   case MHD_HTTP_PAYMENT_REQUIRED:
     144             :     {
     145           0 :       struct TALER_MERCHANT_OrderWalletGetResponse owgr = {
     146             :         .hr.reply = json,
     147             :         .hr.http_status = MHD_HTTP_PAYMENT_REQUIRED
     148             :       };
     149             : 
     150             :       /* Status is: unpaid */
     151             :       owgr.details.payment_required.taler_pay_uri
     152           0 :         = json_string_value (json_object_get (json,
     153             :                                               "taler_pay_uri"));
     154             :       owgr.details.payment_required.already_paid_order_id
     155           0 :         = json_string_value (json_object_get (json,
     156             :                                               "already_paid_order_id"));
     157           0 :       if (NULL == owgr.details.payment_required.taler_pay_uri)
     158             :       {
     159           0 :         GNUNET_break_op (0);
     160           0 :         cb_failure (owgh,
     161             :                     TALER_EC_GENERIC_REPLY_MALFORMED,
     162             :                     json);
     163           0 :         break;
     164             :       }
     165           0 :       owgh->cb (owgh->cb_cls,
     166             :                 &owgr);
     167           0 :       break;
     168             :     }
     169           0 :   default:
     170             :     {
     171           0 :       struct TALER_MERCHANT_OrderWalletGetResponse owgr = {
     172             :         .hr.reply = json,
     173             :         .hr.http_status = response_code
     174             :       };
     175             : 
     176           0 :       TALER_MERCHANT_parse_error_details_ (response,
     177             :                                            response_code,
     178             :                                            &owgr.hr);
     179           0 :       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
     180             :                   "Checking order status failed with HTTP status code %u/%d\n",
     181             :                   (unsigned int) response_code,
     182             :                   (int) owgr.hr.ec);
     183           0 :       GNUNET_break_op (0);
     184           0 :       owgh->cb (owgh->cb_cls,
     185             :                 &owgr);
     186           0 :       break;
     187             :     }
     188             :   }
     189           0 :   TALER_MERCHANT_wallet_order_get_cancel (owgh);
     190             : }
     191             : 
     192             : 
     193             : struct TALER_MERCHANT_OrderWalletGetHandle *
     194           0 : TALER_MERCHANT_wallet_order_get (
     195             :   struct GNUNET_CURL_Context *ctx,
     196             :   const char *backend_url,
     197             :   const char *order_id,
     198             :   const struct TALER_PrivateContractHashP *h_contract,
     199             :   struct GNUNET_TIME_Relative timeout,
     200             :   const char *session_id,
     201             :   const struct TALER_Amount *min_refund,
     202             :   bool await_refund_obtained,
     203             :   TALER_MERCHANT_OrderWalletGetCallback cb,
     204             :   void *cb_cls)
     205             : {
     206             :   struct TALER_MERCHANT_OrderWalletGetHandle *owgh;
     207             :   unsigned long long tms;
     208             :   long tlong;
     209             : 
     210           0 :   GNUNET_assert (NULL != backend_url);
     211           0 :   GNUNET_assert (NULL != order_id);
     212           0 :   owgh = GNUNET_new (struct TALER_MERCHANT_OrderWalletGetHandle);
     213           0 :   owgh->ctx = ctx;
     214           0 :   owgh->cb = cb;
     215           0 :   owgh->cb_cls = cb_cls;
     216           0 :   tms = (unsigned long long) (timeout.rel_value_us
     217           0 :                               / GNUNET_TIME_UNIT_MILLISECONDS.rel_value_us);
     218             :   /* set curl timeout to *our* long poll timeout plus one minute
     219             :      (for network latency and processing delays) */
     220           0 :   tlong = (long) (GNUNET_TIME_relative_add (timeout,
     221           0 :                                             GNUNET_TIME_UNIT_MINUTES).
     222             :                   rel_value_us
     223           0 :                   / GNUNET_TIME_UNIT_MILLISECONDS.rel_value_us);
     224             :   {
     225             :     char timeout_ms[32];
     226             :     struct GNUNET_CRYPTO_HashAsciiEncoded h_contract_s;
     227             :     char *path;
     228             : 
     229           0 :     GNUNET_CRYPTO_hash_to_enc (&h_contract->hash,
     230             :                                &h_contract_s);
     231           0 :     GNUNET_snprintf (timeout_ms,
     232             :                      sizeof (timeout_ms),
     233             :                      "%llu",
     234             :                      tms);
     235           0 :     GNUNET_asprintf (&path,
     236             :                      "orders/%s",
     237             :                      order_id);
     238           0 :     owgh->url = TALER_url_join (backend_url,
     239             :                                 path,
     240             :                                 "h_contract",
     241             :                                 h_contract_s.encoding,
     242             :                                 "session_id",
     243             :                                 session_id,
     244             :                                 "timeout_ms",
     245             :                                 (0 != tms)
     246             :                                 ? timeout_ms
     247             :                                 : NULL,
     248             :                                 "refund",
     249             :                                 (NULL != min_refund)
     250           0 :                                 ? TALER_amount2s (min_refund)
     251             :                                 : NULL,
     252             :                                 "await_refund_obtained",
     253             :                                 await_refund_obtained
     254             :                                 ? "yes"
     255             :                                 : NULL,
     256             :                                 NULL);
     257           0 :     GNUNET_free (path);
     258             :   }
     259           0 :   if (NULL == owgh->url)
     260             :   {
     261           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     262             :                 "Could not construct request URL.\n");
     263           0 :     GNUNET_free (owgh);
     264           0 :     return NULL;
     265             :   }
     266             : 
     267             :   {
     268             :     CURL *eh;
     269             : 
     270           0 :     eh = TALER_MERCHANT_curl_easy_get_ (owgh->url);
     271           0 :     if (0 != tms)
     272             :     {
     273           0 :       if (CURLE_OK !=
     274           0 :           curl_easy_setopt (eh,
     275             :                             CURLOPT_TIMEOUT_MS,
     276             :                             (long) tms))
     277             :       {
     278           0 :         GNUNET_break (0);
     279           0 :         curl_easy_cleanup (eh);
     280           0 :         GNUNET_free (owgh->url);
     281           0 :         GNUNET_free (owgh);
     282           0 :         return NULL;
     283             :       }
     284             :     }
     285           0 :     if (CURLE_OK !=
     286           0 :         curl_easy_setopt (eh,
     287             :                           CURLOPT_TIMEOUT_MS,
     288             :                           tlong))
     289             :     {
     290           0 :       GNUNET_break (0);
     291           0 :       curl_easy_cleanup (eh);
     292           0 :       GNUNET_free (owgh->url);
     293           0 :       GNUNET_free (owgh);
     294           0 :       return NULL;
     295             :     }
     296             : 
     297           0 :     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
     298             :                 "Checking order status at %s\n",
     299             :                 owgh->url);
     300           0 :     if (NULL == (owgh->job =
     301           0 :                    GNUNET_CURL_job_add (ctx,
     302             :                                         eh,
     303             :                                         &handle_wallet_get_order_finished,
     304             :                                         owgh)))
     305             :     {
     306           0 :       GNUNET_break (0);
     307           0 :       GNUNET_free (owgh->url);
     308           0 :       GNUNET_free (owgh);
     309           0 :       return NULL;
     310             :     }
     311             :   }
     312           0 :   return owgh;
     313             : }
     314             : 
     315             : 
     316             : void
     317           0 : TALER_MERCHANT_wallet_order_get_cancel (
     318             :   struct TALER_MERCHANT_OrderWalletGetHandle *owgh)
     319             : {
     320           0 :   if (NULL != owgh->job)
     321             :   {
     322           0 :     GNUNET_CURL_job_cancel (owgh->job);
     323           0 :     owgh->job = NULL;
     324             :   }
     325           0 :   GNUNET_free (owgh->url);
     326           0 :   GNUNET_free (owgh);
     327           0 : }
     328             : 
     329             : 
     330             : /* end of merchant_api_wallet_get_order.c */

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