merchant

Merchant backend to process payments, run by merchants
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taler-merchant-httpd_delete-private-token.c (4009B)

      1 /*
      2   This file is part of GNU Taler
      3   (C) 2023 Taler Systems SA
      4 
      5   GNU Taler is free software; you can redistribute it and/or modify
      6   it under the terms of the GNU Affero General Public License as
      7   published by the Free Software Foundation; either version 3,
      8   or (at your option) any later version.
      9 
     10   GNU Taler is distributed in the hope that it will be useful, but
     11   WITHOUT ANY WARRANTY; without even the implied warranty of
     12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13   GNU General Public License for more details.
     14 
     15   You should have received a copy of the GNU General Public
     16   License along with TALER; see the file COPYING.  If not,
     17   see <http://www.gnu.org/licenses/>
     18 */
     19 
     20 /**
     21  * @file src/backend/taler-merchant-httpd_delete-private-token.c
     22  * @brief implementing DELETE /instances/$ID/token request handling
     23  * @author Christian Grothoff
     24  */
     25 #include "platform.h"
     26 #include "taler-merchant-httpd_delete-private-token.h"
     27 #include "taler-merchant-httpd_helper.h"
     28 #include <taler/taler_json_lib.h>
     29 #include "merchant-database/delete_login_token.h"
     30 
     31 
     32 enum MHD_Result
     33 TMH_private_delete_instances_ID_token (const struct TMH_RequestHandler *rh,
     34                                        struct MHD_Connection *connection,
     35                                        struct TMH_HandlerContext *hc)
     36 {
     37   const char *bearer = "Bearer ";
     38   struct TMH_MerchantInstance *mi = hc->instance;
     39   const char *tok;
     40   struct TALER_MERCHANTDB_LoginTokenP btoken;
     41   enum GNUNET_DB_QueryStatus qs;
     42 
     43   tok = MHD_lookup_connection_value (connection,
     44                                      MHD_HEADER_KIND,
     45                                      MHD_HTTP_HEADER_AUTHORIZATION);
     46   /* This was presumably checked before... */
     47   if (0 !=
     48       strncmp (tok,
     49                bearer,
     50                strlen (bearer)))
     51   {
     52     GNUNET_break_op (0);
     53     return TALER_MHD_reply_with_ec (connection,
     54                                     TALER_EC_GENERIC_PARAMETER_MALFORMED,
     55                                     "login token (in 'Authorization' header)");
     56   }
     57   tok += strlen (bearer);
     58   while (' ' == *tok)
     59     tok++;
     60   if (0 != strncasecmp (tok,
     61                         RFC_8959_PREFIX,
     62                         strlen (RFC_8959_PREFIX)))
     63   {
     64     GNUNET_break_op (0);
     65     return TALER_MHD_reply_with_ec (connection,
     66                                     TALER_EC_GENERIC_PARAMETER_MALFORMED,
     67                                     "login token (in 'Authorization' header)");
     68   }
     69   tok += strlen (RFC_8959_PREFIX);
     70 
     71   if (GNUNET_OK !=
     72       GNUNET_STRINGS_string_to_data (tok,
     73                                      strlen (tok),
     74                                      &btoken,
     75                                      sizeof (btoken)))
     76   {
     77     GNUNET_break_op (0);
     78     return TALER_MHD_reply_with_ec (connection,
     79                                     TALER_EC_GENERIC_PARAMETER_MALFORMED,
     80                                     "login token (in 'Authorization' header)");
     81   }
     82   qs = TALER_MERCHANTDB_delete_login_token (TMH_db,
     83                                             mi->settings.id,
     84                                             &btoken);
     85   switch (qs)
     86   {
     87   case GNUNET_DB_STATUS_HARD_ERROR:
     88   case GNUNET_DB_STATUS_SOFT_ERROR:
     89     GNUNET_break (0);
     90     return TALER_MHD_reply_with_ec (connection,
     91                                     TALER_EC_GENERIC_DB_STORE_FAILED,
     92                                     "delete_login_token");
     93   case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
     94   /* No 404, as the login token must have existed
     95      when we got the request as it was accepted as
     96      valid. So we can only get here due to concurrent
     97      modification, and then the client should still
     98      simply see the success. Hence, fall-through! */
     99   case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
    100     return TALER_MHD_reply_static (connection,
    101                                    MHD_HTTP_NO_CONTENT,
    102                                    NULL,
    103                                    NULL,
    104                                    0);
    105   }
    106   GNUNET_break (0);
    107   return MHD_NO;
    108 }