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_management_auditor_enable.c
      19             :  * @brief functions to enable an auditor
      20             :  * @author Christian Grothoff
      21             :  */
      22             : #include "taler/platform.h"
      23             : #include "taler/taler_json_lib.h"
      24             : #include <gnunet/gnunet_curl_lib.h>
      25             : #include <microhttpd.h>
      26             : #include "taler/taler_exchange_service.h"
      27             : #include "exchange_api_curl_defaults.h"
      28             : #include "taler/taler_signatures.h"
      29             : #include "taler/taler_curl_lib.h"
      30             : #include "taler/taler_json_lib.h"
      31             : 
      32             : 
      33             : /**
      34             :  * @brief Handle for a POST /management/auditors request.
      35             :  */
      36             : struct TALER_EXCHANGE_ManagementAuditorEnableHandle
      37             : {
      38             : 
      39             :   /**
      40             :    * The url for this request.
      41             :    */
      42             :   char *url;
      43             : 
      44             :   /**
      45             :    * Minor context that holds body and headers.
      46             :    */
      47             :   struct TALER_CURL_PostContext post_ctx;
      48             : 
      49             :   /**
      50             :    * Handle for the request.
      51             :    */
      52             :   struct GNUNET_CURL_Job *job;
      53             : 
      54             :   /**
      55             :    * Function to call with the result.
      56             :    */
      57             :   TALER_EXCHANGE_ManagementAuditorEnableCallback cb;
      58             : 
      59             :   /**
      60             :    * Closure for @a cb.
      61             :    */
      62             :   void *cb_cls;
      63             : 
      64             :   /**
      65             :    * Reference to the execution context.
      66             :    */
      67             :   struct GNUNET_CURL_Context *ctx;
      68             : };
      69             : 
      70             : 
      71             : /**
      72             :  * Function called when we're done processing the
      73             :  * HTTP POST /management/auditors request.
      74             :  *
      75             :  * @param cls the `struct TALER_EXCHANGE_ManagementAuditorEnableHandle *`
      76             :  * @param response_code HTTP response code, 0 on error
      77             :  * @param response response body, NULL if not in JSON
      78             :  */
      79             : static void
      80          12 : handle_auditor_enable_finished (void *cls,
      81             :                                 long response_code,
      82             :                                 const void *response)
      83             : {
      84          12 :   struct TALER_EXCHANGE_ManagementAuditorEnableHandle *ah = cls;
      85          12 :   const json_t *json = response;
      86          12 :   struct TALER_EXCHANGE_ManagementAuditorEnableResponse auditor_enable_response
      87             :     = {
      88          12 :     .hr.http_status = (unsigned int) response_code,
      89             :     .hr.reply = json
      90             :     };
      91             : 
      92          12 :   ah->job = NULL;
      93          12 :   switch (response_code)
      94             :   {
      95          10 :   case MHD_HTTP_NO_CONTENT:
      96          10 :     break;
      97           2 :   case MHD_HTTP_FORBIDDEN:
      98           2 :     auditor_enable_response.hr.ec = TALER_JSON_get_error_code (json);
      99           2 :     auditor_enable_response.hr.hint = TALER_JSON_get_error_hint (json);
     100           2 :     break;
     101           0 :   case MHD_HTTP_NOT_FOUND:
     102           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     103             :                 "Server did not find handler at `%s'. Did you configure the correct exchange base URL?\n",
     104             :                 ah->url);
     105           0 :     if (NULL != json)
     106             :     {
     107           0 :       auditor_enable_response.hr.ec = TALER_JSON_get_error_code (json);
     108           0 :       auditor_enable_response.hr.hint = TALER_JSON_get_error_hint (json);
     109             :     }
     110             :     else
     111             :     {
     112           0 :       auditor_enable_response.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     113           0 :       auditor_enable_response.hr.hint = TALER_ErrorCode_get_hint (
     114             :         auditor_enable_response.hr.ec);
     115             :     }
     116           0 :     break;
     117           0 :   case MHD_HTTP_CONFLICT:
     118           0 :     auditor_enable_response.hr.ec = TALER_JSON_get_error_code (json);
     119           0 :     auditor_enable_response.hr.hint = TALER_JSON_get_error_hint (json);
     120           0 :     break;
     121           0 :   default:
     122             :     /* unexpected response code */
     123           0 :     GNUNET_break_op (0);
     124           0 :     auditor_enable_response.hr.ec = TALER_JSON_get_error_code (json);
     125           0 :     auditor_enable_response.hr.hint = TALER_JSON_get_error_hint (json);
     126           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     127             :                 "Unexpected response code %u/%d for exchange management auditor enable\n",
     128             :                 (unsigned int) response_code,
     129             :                 (int) auditor_enable_response.hr.ec);
     130           0 :     break;
     131             :   }
     132          12 :   if (NULL != ah->cb)
     133             :   {
     134          12 :     ah->cb (ah->cb_cls,
     135             :             &auditor_enable_response);
     136          12 :     ah->cb = NULL;
     137             :   }
     138          12 :   TALER_EXCHANGE_management_enable_auditor_cancel (ah);
     139          12 : }
     140             : 
     141             : 
     142             : struct TALER_EXCHANGE_ManagementAuditorEnableHandle *
     143          12 : TALER_EXCHANGE_management_enable_auditor (
     144             :   struct GNUNET_CURL_Context *ctx,
     145             :   const char *url,
     146             :   const struct TALER_AuditorPublicKeyP *auditor_pub,
     147             :   const char *auditor_url,
     148             :   const char *auditor_name,
     149             :   struct GNUNET_TIME_Timestamp validity_start,
     150             :   const struct TALER_MasterSignatureP *master_sig,
     151             :   TALER_EXCHANGE_ManagementAuditorEnableCallback cb,
     152             :   void *cb_cls)
     153             : {
     154             :   struct TALER_EXCHANGE_ManagementAuditorEnableHandle *ah;
     155             :   CURL *eh;
     156             :   json_t *body;
     157             : 
     158          12 :   ah = GNUNET_new (struct TALER_EXCHANGE_ManagementAuditorEnableHandle);
     159          12 :   ah->cb = cb;
     160          12 :   ah->cb_cls = cb_cls;
     161          12 :   ah->ctx = ctx;
     162          12 :   ah->url = TALER_url_join (url,
     163             :                             "management/auditors",
     164             :                             NULL);
     165          12 :   if (NULL == ah->url)
     166             :   {
     167           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     168             :                 "Could not construct request URL.\n");
     169           0 :     GNUNET_free (ah);
     170           0 :     return NULL;
     171             :   }
     172          12 :   body = GNUNET_JSON_PACK (
     173             :     GNUNET_JSON_pack_string ("auditor_url",
     174             :                              auditor_url),
     175             :     GNUNET_JSON_pack_string ("auditor_name",
     176             :                              auditor_name),
     177             :     GNUNET_JSON_pack_data_auto ("auditor_pub",
     178             :                                 auditor_pub),
     179             :     GNUNET_JSON_pack_data_auto ("master_sig",
     180             :                                 master_sig),
     181             :     GNUNET_JSON_pack_timestamp ("validity_start",
     182             :                                 validity_start));
     183          12 :   eh = TALER_EXCHANGE_curl_easy_get_ (ah->url);
     184          24 :   if ( (NULL == eh) ||
     185             :        (GNUNET_OK !=
     186          12 :         TALER_curl_easy_post (&ah->post_ctx,
     187             :                               eh,
     188             :                               body)) )
     189             :   {
     190           0 :     GNUNET_break (0);
     191           0 :     json_decref (body);
     192           0 :     if (NULL != eh)
     193           0 :       curl_easy_cleanup (eh);
     194           0 :     GNUNET_free (ah->url);
     195           0 :     return NULL;
     196             :   }
     197          12 :   json_decref (body);
     198          12 :   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     199             :               "Requesting URL '%s'\n",
     200             :               ah->url);
     201          24 :   ah->job = GNUNET_CURL_job_add2 (ctx,
     202             :                                   eh,
     203          12 :                                   ah->post_ctx.headers,
     204             :                                   &handle_auditor_enable_finished,
     205             :                                   ah);
     206          12 :   if (NULL == ah->job)
     207             :   {
     208           0 :     TALER_EXCHANGE_management_enable_auditor_cancel (ah);
     209           0 :     return NULL;
     210             :   }
     211          12 :   return ah;
     212             : }
     213             : 
     214             : 
     215             : void
     216          12 : TALER_EXCHANGE_management_enable_auditor_cancel (
     217             :   struct TALER_EXCHANGE_ManagementAuditorEnableHandle *ah)
     218             : {
     219          12 :   if (NULL != ah->job)
     220             :   {
     221           0 :     GNUNET_CURL_job_cancel (ah->job);
     222           0 :     ah->job = NULL;
     223             :   }
     224          12 :   TALER_curl_easy_post_finished (&ah->post_ctx);
     225          12 :   GNUNET_free (ah->url);
     226          12 :   GNUNET_free (ah);
     227          12 : }