merchant

Merchant backend to process payments, run by merchants
Log | Files | Refs | Submodules | README | LICENSE

taler-merchant-httpd_get-private-groups.c (3904B)

      1 /*
      2   This file is part of TALER
      3   (C) 2025 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
     12   details.
     13 
     14   You should have received a copy of the GNU Affero General Public License
     15   along with TALER; see the file COPYING.  If not, see
     16   <http://www.gnu.org/licenses/>
     17 */
     18 /**
     19  * @file src/backend/taler-merchant-httpd_get-private-groups.c
     20  * @brief implementation of GET /private/groups
     21  * @author Christian Grothoff
     22  */
     23 #include "platform.h"
     24 #include "taler-merchant-httpd_get-private-groups.h"
     25 #include <taler/taler_json_lib.h>
     26 #include "merchant-database/select_product_groups.h"
     27 
     28 /**
     29  * Sensible bound on the number of results to return
     30  */
     31 #define MAX_DELTA 1024
     32 
     33 
     34 /**
     35  * Callback for listing product groups.
     36  *
     37  * @param cls closure with a `json_t *`
     38  * @param product_group_id unique identifier of the group
     39  * @param group_name name of the group
     40  * @param group_description human-readable description
     41  */
     42 static void
     43 add_group (void *cls,
     44            uint64_t product_group_id,
     45            const char *group_name,
     46            const char *group_description)
     47 {
     48   json_t *groups = cls;
     49   json_t *entry;
     50 
     51   entry = GNUNET_JSON_PACK (
     52     GNUNET_JSON_pack_uint64 ("group_serial",
     53                              product_group_id),
     54     GNUNET_JSON_pack_string ("group_name",
     55                              group_name),
     56     GNUNET_JSON_pack_string ("description",
     57                              group_description));
     58   GNUNET_assert (NULL != entry);
     59   GNUNET_assert (0 ==
     60                  json_array_append_new (groups,
     61                                         entry));
     62 }
     63 
     64 
     65 enum MHD_Result
     66 TMH_private_get_groups (const struct TMH_RequestHandler *rh,
     67                         struct MHD_Connection *connection,
     68                         struct TMH_HandlerContext *hc)
     69 {
     70   int64_t limit = -20;
     71   uint64_t offset;
     72   json_t *groups;
     73 
     74   (void) rh;
     75   TALER_MHD_parse_request_snumber (connection,
     76                                    "limit",
     77                                    &limit);
     78   if ( (-MAX_DELTA > limit) ||
     79        (limit > MAX_DELTA) )
     80   {
     81     GNUNET_break_op (0);
     82     return TALER_MHD_reply_with_error (connection,
     83                                        MHD_HTTP_BAD_REQUEST,
     84                                        TALER_EC_GENERIC_PARAMETER_MALFORMED,
     85                                        "limit");
     86   }
     87   if (limit > 0)
     88     offset = 0;
     89   else
     90     offset = INT64_MAX;
     91   TALER_MHD_parse_request_number (connection,
     92                                   "offset",
     93                                   &offset);
     94 
     95   groups = json_array ();
     96   GNUNET_assert (NULL != groups);
     97 
     98   {
     99     enum GNUNET_DB_QueryStatus qs;
    100 
    101     qs = TALER_MERCHANTDB_select_product_groups (TMH_db,
    102                                                  hc->instance->settings.id,
    103                                                  limit,
    104                                                  offset,
    105                                                  &add_group,
    106                                                  groups);
    107     if (qs < 0)
    108     {
    109       GNUNET_break (0);
    110       json_decref (groups);
    111       return TALER_MHD_reply_with_error (connection,
    112                                          MHD_HTTP_INTERNAL_SERVER_ERROR,
    113                                          TALER_EC_GENERIC_DB_FETCH_FAILED,
    114                                          "select_product_groups");
    115     }
    116   }
    117 
    118   return TALER_MHD_REPLY_JSON_PACK (
    119     connection,
    120     MHD_HTTP_OK,
    121     GNUNET_JSON_pack_array_steal ("groups",
    122                                   groups));
    123 }