LCOV - code coverage report
Current view: top level - lib - merchant_api_delete_instance.c (source / functions) Hit Total Coverage
Test: GNU Taler coverage report Lines: 0 52 0.0 %
Date: 2021-04-12 06:04:58 Functions: 0 5 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :   This file is part of TALER
       3             :   Copyright (C) 2014-2018, 2020 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_delete_instance.c
      19             :  * @brief Implementation of the DELETE /instance/$ID request of the merchant's HTTP API
      20             :  * @author Christian Grothoff
      21             :  */
      22             : #include "platform.h"
      23             : #include <curl/curl.h>
      24             : #include <jansson.h>
      25             : #include <microhttpd.h> /* just for HTTP status codes */
      26             : #include <gnunet/gnunet_util_lib.h>
      27             : #include <gnunet/gnunet_curl_lib.h>
      28             : #include "taler_merchant_service.h"
      29             : #include <taler/taler_json_lib.h>
      30             : #include <taler/taler_signatures.h>
      31             : 
      32             : 
      33             : /**
      34             :  * Handle for a DELETE /instances/$ID operation.
      35             :  */
      36             : struct TALER_MERCHANT_InstanceDeleteHandle
      37             : {
      38             :   /**
      39             :    * The url for this request.
      40             :    */
      41             :   char *url;
      42             : 
      43             :   /**
      44             :    * Handle for the request.
      45             :    */
      46             :   struct GNUNET_CURL_Job *job;
      47             : 
      48             :   /**
      49             :    * Function to call with the result.
      50             :    */
      51             :   TALER_MERCHANT_InstanceDeleteCallback cb;
      52             : 
      53             :   /**
      54             :    * Closure for @a cb.
      55             :    */
      56             :   void *cb_cls;
      57             : 
      58             :   /**
      59             :    * Reference to the execution context.
      60             :    */
      61             :   struct GNUNET_CURL_Context *ctx;
      62             : 
      63             : };
      64             : 
      65             : 
      66             : /**
      67             :  * Function called when we're done processing the
      68             :  * HTTP GET /instances/$ID request.
      69             :  *
      70             :  * @param cls the `struct TALER_MERCHANT_InstanceDeleteHandle`
      71             :  * @param response_code HTTP response code, 0 on error
      72             :  * @param response response body, NULL if not in JSON
      73             :  */
      74             : static void
      75           0 : handle_delete_instance_finished (void *cls,
      76             :                                  long response_code,
      77             :                                  const void *response)
      78             : {
      79           0 :   struct TALER_MERCHANT_InstanceDeleteHandle *idh = cls;
      80           0 :   const json_t *json = response;
      81           0 :   struct TALER_MERCHANT_HttpResponse hr = {
      82           0 :     .http_status = (unsigned int) response_code,
      83             :     .reply = json
      84             :   };
      85             : 
      86           0 :   idh->job = NULL;
      87           0 :   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
      88             :               "Got /instances/$ID response with status code %u\n",
      89             :               (unsigned int) response_code);
      90           0 :   switch (response_code)
      91             :   {
      92           0 :   case MHD_HTTP_NO_CONTENT:
      93           0 :     break;
      94           0 :   case MHD_HTTP_NOT_FOUND:
      95           0 :     hr.ec = TALER_JSON_get_error_code (json);
      96           0 :     hr.hint = TALER_JSON_get_error_hint (json);
      97           0 :     break;
      98           0 :   default:
      99             :     /* unexpected response code */
     100           0 :     hr.ec = TALER_JSON_get_error_code (json);
     101           0 :     hr.hint = TALER_JSON_get_error_hint (json);
     102           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     103             :                 "Unexpected response code %u/%d\n",
     104             :                 (unsigned int) response_code,
     105             :                 (int) hr.ec);
     106           0 :     break;
     107             :   }
     108           0 :   idh->cb (idh->cb_cls,
     109             :            &hr);
     110           0 :   TALER_MERCHANT_instance_delete_cancel (idh);
     111           0 : }
     112             : 
     113             : 
     114             : /**
     115             :  * Delete the private key of an instance of a backend, thereby disabling the
     116             :  * instance for future requests.  Will preserve the other instance data
     117             :  * (i.e. for taxation).
     118             :  *
     119             :  * @param ctx the context
     120             :  * @param backend_url HTTP base URL for the backend
     121             :  * @param instance_id which instance should be deleted
     122             :  * @param purge purge instead of just deleting
     123             :  * @param cb function to call with the
     124             :  *        backend's return
     125             :  * @param cb_cls closure for @a config_cb
     126             :  * @return the instances handle; NULL upon error
     127             :  */
     128             : static struct TALER_MERCHANT_InstanceDeleteHandle *
     129           0 : instance_delete (struct GNUNET_CURL_Context *ctx,
     130             :                  const char *backend_url,
     131             :                  const char *instance_id,
     132             :                  bool purge,
     133             :                  TALER_MERCHANT_InstanceDeleteCallback cb,
     134             :                  void *cb_cls)
     135             : {
     136             :   struct TALER_MERCHANT_InstanceDeleteHandle *idh;
     137             : 
     138           0 :   idh = GNUNET_new (struct TALER_MERCHANT_InstanceDeleteHandle);
     139           0 :   idh->ctx = ctx;
     140           0 :   idh->cb = cb;
     141           0 :   idh->cb_cls = cb_cls;
     142             :   {
     143             :     char *path;
     144             : 
     145           0 :     GNUNET_asprintf (&path,
     146             :                      "private/instances/%s",
     147             :                      instance_id);
     148           0 :     if (purge)
     149           0 :       idh->url = TALER_url_join (backend_url,
     150             :                                  path,
     151             :                                  "purge",
     152             :                                  "yes",
     153             :                                  NULL);
     154             :     else
     155           0 :       idh->url = TALER_url_join (backend_url,
     156             :                                  path,
     157             :                                  NULL);
     158           0 :     GNUNET_free (path);
     159             :   }
     160           0 :   if (NULL == idh->url)
     161             :   {
     162           0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     163             :                 "Could not construct request URL.\n");
     164           0 :     GNUNET_free (idh);
     165           0 :     return NULL;
     166             :   }
     167           0 :   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     168             :               "Requesting URL '%s'\n",
     169             :               idh->url);
     170             :   {
     171             :     CURL *eh;
     172             : 
     173           0 :     eh = curl_easy_init ();
     174           0 :     GNUNET_assert (CURLE_OK ==
     175             :                    curl_easy_setopt (eh,
     176             :                                      CURLOPT_URL,
     177             :                                      idh->url));
     178           0 :     GNUNET_assert (CURLE_OK ==
     179             :                    curl_easy_setopt (eh,
     180             :                                      CURLOPT_CUSTOMREQUEST,
     181             :                                      MHD_HTTP_METHOD_DELETE));
     182           0 :     idh->job = GNUNET_CURL_job_add (ctx,
     183             :                                     eh,
     184             :                                     &handle_delete_instance_finished,
     185             :                                     idh);
     186             :   }
     187           0 :   return idh;
     188             : }
     189             : 
     190             : 
     191             : struct TALER_MERCHANT_InstanceDeleteHandle *
     192           0 : TALER_MERCHANT_instance_delete (struct GNUNET_CURL_Context *ctx,
     193             :                                 const char *backend_url,
     194             :                                 const char *instance_id,
     195             :                                 TALER_MERCHANT_InstanceDeleteCallback cb,
     196             :                                 void *cb_cls)
     197             : {
     198           0 :   return instance_delete (ctx,
     199             :                           backend_url,
     200             :                           instance_id,
     201             :                           false,
     202             :                           cb,
     203             :                           cb_cls);
     204             : }
     205             : 
     206             : 
     207             : struct TALER_MERCHANT_InstanceDeleteHandle *
     208           0 : TALER_MERCHANT_instance_purge (struct GNUNET_CURL_Context *ctx,
     209             :                                const char *backend_url,
     210             :                                const char *instance_id,
     211             :                                TALER_MERCHANT_InstanceDeleteCallback cb,
     212             :                                void *cb_cls)
     213             : {
     214           0 :   return instance_delete (ctx,
     215             :                           backend_url,
     216             :                           instance_id,
     217             :                           true,
     218             :                           cb,
     219             :                           cb_cls);
     220             : }
     221             : 
     222             : 
     223             : void
     224           0 : TALER_MERCHANT_instance_delete_cancel (
     225             :   struct TALER_MERCHANT_InstanceDeleteHandle *idh)
     226             : {
     227           0 :   if (NULL != idh->job)
     228           0 :     GNUNET_CURL_job_cancel (idh->job);
     229           0 :   GNUNET_free (idh->url);
     230           0 :   GNUNET_free (idh);
     231           0 : }

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