LCOV - code coverage report
Current view: top level - lib - exchange_api_auditor_add_denomination.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 42 80 52.5 %
Date: 2025-06-05 21:03:14 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :   This file is part of TALER
       3             :   Copyright (C) 2015-2021 Taler Systems SA
       4             : 
       5             :   TALER is free software; you can redistribute it and/or modify it under the
       6             :   terms of the GNU General Public License as published by the Free Software
       7             :   Foundation; either version 3, 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 General Public License for more details.
      12             : 
      13             :   You should have received a copy of the GNU General Public License along with
      14             :   TALER; see the file COPYING.  If not, see
      15             :   <http://www.gnu.org/licenses/>
      16             : */
      17             : /**
      18             :  * @file lib/exchange_api_auditor_add_denomination.c
      19             :  * @brief functions for the auditor to add its signature for denomination at the exchange
      20             :  * @author Christian Grothoff
      21             :  */
      22             : #include "platform.h"
      23             : #include "taler_json_lib.h"
      24             : #include <gnunet/gnunet_curl_lib.h>
      25             : #include <microhttpd.h>
      26             : #include "taler_exchange_service.h"
      27             : #include "auditor_api_curl_defaults.h"
      28             : #include "taler_signatures.h"
      29             : #include "taler_curl_lib.h"
      30             : #include "taler_json_lib.h"
      31             : 
      32             : 
      33             : struct TALER_EXCHANGE_AuditorAddDenominationHandle
      34             : {
      35             : 
      36             :   /**
      37             :    * The url for this request.
      38             :    */
      39             :   char *url;
      40             : 
      41             :   /**
      42             :    * Minor context that holds body and headers.
      43             :    */
      44             :   struct TALER_CURL_PostContext post_ctx;
      45             : 
      46             :   /**
      47             :    * Handle for the request.
      48             :    */
      49             :   struct GNUNET_CURL_Job *job;
      50             : 
      51             :   /**
      52             :    * Function to call with the result.
      53             :    */
      54             :   TALER_EXCHANGE_AuditorAddDenominationCallback cb;
      55             : 
      56             :   /**
      57             :    * Closure for @a cb.
      58             :    */
      59             :   void *cb_cls;
      60             : 
      61             :   /**
      62             :    * Reference to the execution context.
      63             :    */
      64             :   struct GNUNET_CURL_Context *ctx;
      65             : };
      66             : 
      67             : 
      68             : /**
      69             :  * Function called when we're done processing the
      70             :  * HTTP POST /auditor/$AUDITOR_PUB/$H_DENOM_PUB request.
      71             :  *
      72             :  * @param cls the `struct TALER_EXCHANGE_AuditorAddDenominationHandle *`
      73             :  * @param response_code HTTP response code, 0 on error
      74             :  * @param response response body, NULL if not in JSON
      75             :  */
      76             : static void
      77        4028 : handle_auditor_add_denomination_finished (void *cls,
      78             :                                           long response_code,
      79             :                                           const void *response)
      80             : {
      81        4028 :   struct TALER_EXCHANGE_AuditorAddDenominationHandle *ah = cls;
      82        4028 :   const json_t *json = response;
      83        4028 :   struct TALER_EXCHANGE_AuditorAddDenominationResponse adr = {
      84        4028 :     .hr.http_status = (unsigned int) response_code,
      85             :     .hr.reply = json
      86             :   };
      87             : 
      88        4028 :   ah->job = NULL;
      89        4028 :   switch (response_code)
      90             :   {
      91        4028 :   case MHD_HTTP_NO_CONTENT:
      92        4028 :     break;
      93           0 :   case MHD_HTTP_FORBIDDEN:
      94           0 :     adr.hr.ec = TALER_JSON_get_error_code (json);
      95           0 :     adr.hr.hint = TALER_JSON_get_error_hint (json);
      96           0 :     break;
      97           0 :   case MHD_HTTP_NOT_FOUND:
      98           0 :     adr.hr.ec = TALER_JSON_get_error_code (json);
      99           0 :     adr.hr.hint = TALER_JSON_get_error_hint (json);
     100           0 :     break;
     101           0 :   case MHD_HTTP_GONE:
     102           0 :     adr.hr.ec = TALER_JSON_get_error_code (json);
     103           0 :     adr.hr.hint = TALER_JSON_get_error_hint (json);
     104           0 :     break;
     105           0 :   case MHD_HTTP_PRECONDITION_FAILED:
     106           0 :     adr.hr.ec = TALER_JSON_get_error_code (json);
     107           0 :     adr.hr.hint = TALER_JSON_get_error_hint (json);
     108           0 :     break;
     109           0 :   default:
     110             :     /* unexpected response code */
     111           0 :     if (NULL != json)
     112             :     {
     113           0 :       adr.hr.ec = TALER_JSON_get_error_code (json);
     114           0 :       adr.hr.hint = TALER_JSON_get_error_hint (json);
     115           0 :       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     116             :                   "Unexpected response code %u/%d for exchange auditor-add-denomination at URL `%s'\n",
     117             :                   (unsigned int) response_code,
     118             :                   (int) adr.hr.ec,
     119             :                   ah->url);
     120             :     }
     121             :     else
     122             :     {
     123           0 :       adr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     124           0 :       adr.hr.hint = NULL;
     125           0 :       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     126             :                   "Unexpected HTTP response code %u (no JSON returned) at URL `%s'\n",
     127             :                   (unsigned int) response_code,
     128             :                   ah->url);
     129             :     }
     130           0 :     break;
     131             :   }
     132        4028 :   if (NULL != ah->cb)
     133             :   {
     134        4028 :     ah->cb (ah->cb_cls,
     135             :             &adr);
     136        4028 :     ah->cb = NULL;
     137             :   }
     138        4028 :   TALER_EXCHANGE_add_auditor_denomination_cancel (ah);
     139        4028 : }
     140             : 
     141             : 
     142             : struct TALER_EXCHANGE_AuditorAddDenominationHandle *
     143        4028 : TALER_EXCHANGE_add_auditor_denomination (
     144             :   struct GNUNET_CURL_Context *ctx,
     145             :   const char *url,
     146             :   const struct TALER_DenominationHashP *h_denom_pub,
     147             :   const struct TALER_AuditorPublicKeyP *auditor_pub,
     148             :   const struct TALER_AuditorSignatureP *auditor_sig,
     149             :   TALER_EXCHANGE_AuditorAddDenominationCallback cb,
     150             :   void *cb_cls)
     151             : {
     152             :   struct TALER_EXCHANGE_AuditorAddDenominationHandle *ah;
     153             :   CURL *eh;
     154             :   json_t *body;
     155             : 
     156        4028 :   ah = GNUNET_new (struct TALER_EXCHANGE_AuditorAddDenominationHandle);
     157        4028 :   ah->cb = cb;
     158        4028 :   ah->cb_cls = cb_cls;
     159        4028 :   ah->ctx = ctx;
     160             :   {
     161             :     char apub_str[sizeof (*auditor_pub) * 2];
     162             :     char denom_str[sizeof (*h_denom_pub) * 2];
     163             :     char arg_str[sizeof (apub_str) + sizeof (denom_str) + 32];
     164             :     char *end;
     165             : 
     166        4028 :     end = GNUNET_STRINGS_data_to_string (auditor_pub,
     167             :                                          sizeof (*auditor_pub),
     168             :                                          apub_str,
     169             :                                          sizeof (apub_str));
     170        4028 :     *end = '\0';
     171        4028 :     end = GNUNET_STRINGS_data_to_string (h_denom_pub,
     172             :                                          sizeof (*h_denom_pub),
     173             :                                          denom_str,
     174             :                                          sizeof (denom_str));
     175        4028 :     *end = '\0';
     176        4028 :     GNUNET_snprintf (arg_str,
     177             :                      sizeof (arg_str),
     178             :                      "auditors/%s/%s",
     179             :                      apub_str,
     180             :                      denom_str);
     181        4028 :     ah->url = TALER_url_join (url,
     182             :                               arg_str,
     183             :                               NULL);
     184             :   }
     185        4028 :   if (NULL == ah->url)
     186             :   {
     187           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     188             :                 "Could not construct request URL.\n");
     189           0 :     GNUNET_free (ah);
     190           0 :     return NULL;
     191             :   }
     192        4028 :   body = GNUNET_JSON_PACK (
     193             :     GNUNET_JSON_pack_data_auto ("auditor_sig",
     194             :                                 auditor_sig));
     195        4028 :   eh = TALER_AUDITOR_curl_easy_get_ (ah->url);
     196        8056 :   if ( (NULL == eh) ||
     197             :        (GNUNET_OK !=
     198        4028 :         TALER_curl_easy_post (&ah->post_ctx,
     199             :                               eh,
     200             :                               body)) )
     201             :   {
     202           0 :     GNUNET_break (0);
     203           0 :     if (NULL != eh)
     204           0 :       curl_easy_cleanup (eh);
     205           0 :     json_decref (body);
     206           0 :     GNUNET_free (ah->url);
     207           0 :     return NULL;
     208             :   }
     209        4028 :   json_decref (body);
     210        4028 :   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     211             :               "Requesting URL '%s'\n",
     212             :               ah->url);
     213        8056 :   ah->job = GNUNET_CURL_job_add2 (ctx,
     214             :                                   eh,
     215        4028 :                                   ah->post_ctx.headers,
     216             :                                   &handle_auditor_add_denomination_finished,
     217             :                                   ah);
     218        4028 :   if (NULL == ah->job)
     219             :   {
     220           0 :     TALER_EXCHANGE_add_auditor_denomination_cancel (ah);
     221           0 :     return NULL;
     222             :   }
     223        4028 :   return ah;
     224             : }
     225             : 
     226             : 
     227             : void
     228        4028 : TALER_EXCHANGE_add_auditor_denomination_cancel (
     229             :   struct TALER_EXCHANGE_AuditorAddDenominationHandle *ah)
     230             : {
     231        4028 :   if (NULL != ah->job)
     232             :   {
     233           0 :     GNUNET_CURL_job_cancel (ah->job);
     234           0 :     ah->job = NULL;
     235             :   }
     236        4028 :   TALER_curl_easy_post_finished (&ah->post_ctx);
     237        4028 :   GNUNET_free (ah->url);
     238        4028 :   GNUNET_free (ah);
     239        4028 : }

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