exchange

Base system with REST service to issue digital coins, run by the payment service provider
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taler-exchange-httpd_management_denominations_HDP_revoke.c (3114B)

      1 /*
      2   This file is part of TALER
      3   Copyright (C) 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 Affero 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 Affero General Public License for more details.
     12 
     13   You should have received a copy of the GNU Affero General Public License along with
     14   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15 */
     16 /**
     17  * @file taler-exchange-httpd_management_denominations_HDP_revoke.c
     18  * @brief Handle denomination revocation requests.
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/platform.h"
     22 #include <gnunet/gnunet_util_lib.h>
     23 #include <gnunet/gnunet_json_lib.h>
     24 #include <jansson.h>
     25 #include <microhttpd.h>
     26 #include <pthread.h>
     27 #include "taler/taler_json_lib.h"
     28 #include "taler/taler_mhd_lib.h"
     29 #include "taler-exchange-httpd_management.h"
     30 #include "taler-exchange-httpd_responses.h"
     31 #include "taler-exchange-httpd_keys.h"
     32 
     33 
     34 MHD_RESULT
     35 TEH_handler_management_denominations_HDP_revoke (
     36   struct MHD_Connection *connection,
     37   const struct TALER_DenominationHashP *h_denom_pub,
     38   const json_t *root)
     39 {
     40   struct TALER_MasterSignatureP master_sig;
     41   struct GNUNET_JSON_Specification spec[] = {
     42     GNUNET_JSON_spec_fixed_auto ("master_sig",
     43                                  &master_sig),
     44     GNUNET_JSON_spec_end ()
     45   };
     46   enum GNUNET_DB_QueryStatus qs;
     47 
     48   {
     49     enum GNUNET_GenericReturnValue res;
     50 
     51     res = TALER_MHD_parse_json_data (connection,
     52                                      root,
     53                                      spec);
     54     if (GNUNET_SYSERR == res)
     55       return MHD_NO; /* hard failure */
     56     if (GNUNET_NO == res)
     57       return MHD_YES; /* failure */
     58   }
     59   TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++;
     60   if (GNUNET_OK !=
     61       TALER_exchange_offline_denomination_revoke_verify (
     62         h_denom_pub,
     63         &TEH_master_public_key,
     64         &master_sig))
     65   {
     66     GNUNET_break_op (0);
     67     return TALER_MHD_reply_with_error (
     68       connection,
     69       MHD_HTTP_FORBIDDEN,
     70       TALER_EC_EXCHANGE_MANAGEMENT_DENOMINATION_REVOKE_SIGNATURE_INVALID,
     71       NULL);
     72   }
     73   qs = TEH_plugin->insert_denomination_revocation (TEH_plugin->cls,
     74                                                    h_denom_pub,
     75                                                    &master_sig);
     76   if (qs < 0)
     77   {
     78     GNUNET_break (0);
     79     return TALER_MHD_reply_with_error (connection,
     80                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
     81                                        TALER_EC_GENERIC_DB_STORE_FAILED,
     82                                        "denomination revocation");
     83   }
     84   TEH_keys_denomination_revoke (h_denom_pub);
     85   return TALER_MHD_reply_static (
     86     connection,
     87     MHD_HTTP_NO_CONTENT,
     88     NULL,
     89     NULL,
     90     0);
     91 }
     92 
     93 
     94 /* end of taler-exchange-httpd_management_denominations_HDP_revoke.c */