LCOV - code coverage report
Current view: top level - backend - taler-merchant-httpd_private-post-products.c (source / functions) Hit Total Coverage
Test: GNU Taler merchant coverage report Lines: 0 116 0.0 %
Date: 2022-06-30 06:15:34 Functions: 0 2 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :   This file is part of TALER
       3             :   (C) 2020 Taler Systems SA
       4             : 
       5             :   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             :   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 taler-merchant-httpd_private-post-products.c
      22             :  * @brief implementing POST /products request handling
      23             :  * @author Christian Grothoff
      24             :  */
      25             : #include "platform.h"
      26             : #include "taler-merchant-httpd_private-post-products.h"
      27             : #include "taler-merchant-httpd_helper.h"
      28             : #include <taler/taler_json_lib.h>
      29             : 
      30             : 
      31             : /**
      32             :  * How often do we retry the simple INSERT database transaction?
      33             :  */
      34             : #define MAX_RETRIES 3
      35             : 
      36             : 
      37             : /**
      38             :  * Check if the two products are identical.
      39             :  *
      40             :  * @param p1 product to compare
      41             :  * @param p2 other product to compare
      42             :  * @return true if they are 'equal', false if not or of payto_uris is not an array
      43             :  */
      44             : static bool
      45           0 : products_equal (const struct TALER_MERCHANTDB_ProductDetails *p1,
      46             :                 const struct TALER_MERCHANTDB_ProductDetails *p2)
      47             : {
      48           0 :   return ( (0 == strcmp (p1->description,
      49           0 :                          p2->description)) &&
      50           0 :            (1 == json_equal (p1->description_i18n,
      51           0 :                              p2->description_i18n)) &&
      52           0 :            (0 == strcmp (p1->unit,
      53           0 :                          p2->unit)) &&
      54             :            (GNUNET_OK ==
      55           0 :             TALER_amount_cmp_currency (&p1->price,
      56           0 :                                        &p2->price)) &&
      57           0 :            (0 == TALER_amount_cmp (&p1->price,
      58           0 :                                    &p2->price)) &&
      59           0 :            (1 == json_equal (p1->taxes,
      60           0 :                              p2->taxes)) &&
      61           0 :            (p1->total_stock == p2->total_stock) &&
      62           0 :            (p1->total_sold == p2->total_sold) &&
      63           0 :            (p1->total_lost == p2->total_lost) &&
      64           0 :            (p1->minimum_age == p2->minimum_age) &&
      65           0 :            (0 == strcmp (p1->image,
      66           0 :                          p2->image)) &&
      67           0 :            (1 == json_equal (p1->address,
      68           0 :                              p2->address)) &&
      69           0 :            (GNUNET_TIME_timestamp_cmp (p1->next_restock,
      70             :                                        ==,
      71             :                                        p2->next_restock) ) );
      72             : }
      73             : 
      74             : 
      75             : MHD_RESULT
      76           0 : TMH_private_post_products (const struct TMH_RequestHandler *rh,
      77             :                            struct MHD_Connection *connection,
      78             :                            struct TMH_HandlerContext *hc)
      79             : {
      80           0 :   struct TMH_MerchantInstance *mi = hc->instance;
      81           0 :   struct TALER_MERCHANTDB_ProductDetails pd = { 0 };
      82             :   const char *product_id;
      83             :   int64_t total_stock;
      84             :   enum GNUNET_DB_QueryStatus qs;
      85             :   struct GNUNET_JSON_Specification spec[] = {
      86           0 :     GNUNET_JSON_spec_string ("product_id",
      87             :                              &product_id),
      88           0 :     GNUNET_JSON_spec_string ("description",
      89             :                              (const char **) &pd.description),
      90           0 :     GNUNET_JSON_spec_mark_optional (
      91             :       GNUNET_JSON_spec_json ("description_i18n",
      92             :                              &pd.description_i18n),
      93             :       NULL),
      94           0 :     GNUNET_JSON_spec_string ("unit",
      95             :                              (const char **) &pd.unit),
      96           0 :     TALER_JSON_spec_amount ("price",
      97             :                             TMH_currency,
      98             :                             &pd.price),
      99           0 :     GNUNET_JSON_spec_mark_optional (
     100             :       GNUNET_JSON_spec_string ("image",
     101             :                                (const char **) &pd.image),
     102             :       NULL),
     103           0 :     GNUNET_JSON_spec_mark_optional (
     104             :       GNUNET_JSON_spec_json ("taxes",
     105             :                              &pd.taxes),
     106             :       NULL),
     107           0 :     GNUNET_JSON_spec_int64 ("total_stock",
     108             :                             &total_stock),
     109           0 :     GNUNET_JSON_spec_mark_optional (
     110             :       GNUNET_JSON_spec_json ("address",
     111             :                              &pd.address),
     112             :       NULL),
     113           0 :     GNUNET_JSON_spec_mark_optional (
     114             :       GNUNET_JSON_spec_timestamp ("next_restock",
     115             :                                   &pd.next_restock),
     116             :       NULL),
     117           0 :     GNUNET_JSON_spec_mark_optional (
     118             :       GNUNET_JSON_spec_uint32 ("minimum_age",
     119             :                                &pd.minimum_age),
     120             :       NULL),
     121           0 :     GNUNET_JSON_spec_end ()
     122             :   };
     123             : 
     124           0 :   GNUNET_assert (NULL != mi);
     125             :   {
     126             :     enum GNUNET_GenericReturnValue res;
     127             : 
     128           0 :     res = TALER_MHD_parse_json_data (connection,
     129           0 :                                      hc->request_body,
     130             :                                      spec);
     131           0 :     if (GNUNET_OK != res)
     132             :     {
     133           0 :       GNUNET_break_op (0);
     134             :       return (GNUNET_NO == res)
     135             :              ? MHD_YES
     136           0 :              : MHD_NO;
     137             :     }
     138             :   }
     139           0 :   if (total_stock < -1)
     140             :   {
     141           0 :     GNUNET_break_op (0);
     142           0 :     GNUNET_JSON_parse_free (spec);
     143           0 :     return TALER_MHD_reply_with_error (connection,
     144             :                                        MHD_HTTP_BAD_REQUEST,
     145             :                                        TALER_EC_GENERIC_PARAMETER_MALFORMED,
     146             :                                        "total_stock");
     147             :   }
     148             : 
     149             : 
     150           0 :   if (-1 == total_stock)
     151           0 :     pd.total_stock = INT64_MAX;
     152             :   else
     153           0 :     pd.total_stock = (uint64_t) total_stock;
     154             : 
     155           0 :   if (NULL == pd.address)
     156           0 :     pd.address = json_object ();
     157           0 :   if (NULL == pd.description_i18n)
     158           0 :     pd.description_i18n = json_object ();
     159           0 :   if (NULL == pd.taxes)
     160           0 :     pd.taxes = json_array ();
     161             : 
     162             :   /* check taxes is well-formed */
     163           0 :   if (! TMH_taxes_array_valid (pd.taxes))
     164             :   {
     165           0 :     GNUNET_break_op (0);
     166           0 :     GNUNET_JSON_parse_free (spec);
     167           0 :     return TALER_MHD_reply_with_error (connection,
     168             :                                        MHD_HTTP_BAD_REQUEST,
     169             :                                        TALER_EC_GENERIC_PARAMETER_MALFORMED,
     170             :                                        "taxes");
     171             :   }
     172             : 
     173           0 :   if (! TMH_location_object_valid (pd.address))
     174             :   {
     175           0 :     GNUNET_break_op (0);
     176           0 :     GNUNET_JSON_parse_free (spec);
     177           0 :     return TALER_MHD_reply_with_error (connection,
     178             :                                        MHD_HTTP_BAD_REQUEST,
     179             :                                        TALER_EC_GENERIC_PARAMETER_MALFORMED,
     180             :                                        "address");
     181             :   }
     182             : 
     183           0 :   if (! TALER_JSON_check_i18n (pd.description_i18n))
     184             :   {
     185           0 :     GNUNET_break_op (0);
     186           0 :     GNUNET_JSON_parse_free (spec);
     187           0 :     return TALER_MHD_reply_with_error (connection,
     188             :                                        MHD_HTTP_BAD_REQUEST,
     189             :                                        TALER_EC_GENERIC_PARAMETER_MALFORMED,
     190             :                                        "description_i18n");
     191             :   }
     192             : 
     193           0 :   if (NULL == pd.image)
     194           0 :     pd.image = "";
     195           0 :   if (! TMH_image_data_url_valid (pd.image))
     196             :   {
     197           0 :     GNUNET_break_op (0);
     198           0 :     GNUNET_JSON_parse_free (spec);
     199           0 :     return TALER_MHD_reply_with_error (connection,
     200             :                                        MHD_HTTP_BAD_REQUEST,
     201             :                                        TALER_EC_GENERIC_PARAMETER_MALFORMED,
     202             :                                        "image");
     203             :   }
     204             : 
     205             :   /* finally, interact with DB until no serialization error */
     206           0 :   for (unsigned int i = 0; i<MAX_RETRIES; i++)
     207             :   {
     208             :     /* Test if an product of this id is known */
     209             :     struct TALER_MERCHANTDB_ProductDetails epd;
     210             : 
     211           0 :     if (GNUNET_OK !=
     212           0 :         TMH_db->start (TMH_db->cls,
     213             :                        "/post products"))
     214             :     {
     215           0 :       GNUNET_break (0);
     216           0 :       GNUNET_JSON_parse_free (spec);
     217           0 :       return TALER_MHD_reply_with_error (connection,
     218             :                                          MHD_HTTP_INTERNAL_SERVER_ERROR,
     219             :                                          TALER_EC_GENERIC_DB_START_FAILED,
     220             :                                          NULL);
     221             :     }
     222           0 :     qs = TMH_db->lookup_product (TMH_db->cls,
     223           0 :                                  mi->settings.id,
     224             :                                  product_id,
     225             :                                  &epd);
     226           0 :     switch (qs)
     227             :     {
     228           0 :     case GNUNET_DB_STATUS_HARD_ERROR:
     229             :       /* Clean up and fail hard */
     230           0 :       GNUNET_break (0);
     231           0 :       TMH_db->rollback (TMH_db->cls);
     232           0 :       GNUNET_JSON_parse_free (spec);
     233           0 :       return TALER_MHD_reply_with_error (connection,
     234             :                                          MHD_HTTP_INTERNAL_SERVER_ERROR,
     235             :                                          TALER_EC_GENERIC_DB_FETCH_FAILED,
     236             :                                          NULL);
     237           0 :     case GNUNET_DB_STATUS_SOFT_ERROR:
     238             :       /* restart transaction */
     239           0 :       goto retry;
     240           0 :     case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
     241             :       /* Good, we can proceed! */
     242           0 :       break;
     243           0 :     case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
     244             :       /* idempotency check: is epd == pd? */
     245             :       {
     246             :         bool eq;
     247             : 
     248           0 :         eq = products_equal (&pd,
     249             :                              &epd);
     250           0 :         TALER_MERCHANTDB_product_details_free (&epd);
     251           0 :         TMH_db->rollback (TMH_db->cls);
     252           0 :         GNUNET_JSON_parse_free (spec);
     253             :         return eq
     254           0 :           ? TALER_MHD_reply_static (connection,
     255             :                                     MHD_HTTP_NO_CONTENT,
     256             :                                     NULL,
     257             :                                     NULL,
     258             :                                     0)
     259           0 :           : TALER_MHD_reply_with_error (connection,
     260             :                                         MHD_HTTP_CONFLICT,
     261             :                                         TALER_EC_MERCHANT_PRIVATE_POST_PRODUCTS_CONFLICT_PRODUCT_EXISTS,
     262             :                                         product_id);
     263             :       }
     264             :     } /* end switch (qs) */
     265             : 
     266           0 :     qs = TMH_db->insert_product (TMH_db->cls,
     267           0 :                                  mi->settings.id,
     268             :                                  product_id,
     269             :                                  &pd);
     270           0 :     if (GNUNET_DB_STATUS_HARD_ERROR == qs)
     271             :     {
     272           0 :       TMH_db->rollback (TMH_db->cls);
     273           0 :       break;
     274             :     }
     275           0 :     if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
     276             :     {
     277           0 :       qs = TMH_db->commit (TMH_db->cls);
     278           0 :       if (GNUNET_DB_STATUS_SOFT_ERROR != qs)
     279           0 :         break;
     280             :     }
     281           0 : retry:
     282           0 :     GNUNET_assert (GNUNET_DB_STATUS_SOFT_ERROR == qs);
     283           0 :     TMH_db->rollback (TMH_db->cls);
     284             :   } /* for RETRIES loop */
     285           0 :   GNUNET_JSON_parse_free (spec);
     286           0 :   if (qs < 0)
     287             :   {
     288           0 :     GNUNET_break (0);
     289           0 :     return TALER_MHD_reply_with_error (
     290             :       connection,
     291             :       MHD_HTTP_INTERNAL_SERVER_ERROR,
     292             :       (GNUNET_DB_STATUS_SOFT_ERROR == qs)
     293             :       ? TALER_EC_GENERIC_DB_SOFT_FAILURE
     294             :       : TALER_EC_GENERIC_DB_COMMIT_FAILED,
     295             :       NULL);
     296             :   }
     297           0 :   return TALER_MHD_reply_static (connection,
     298             :                                  MHD_HTTP_NO_CONTENT,
     299             :                                  NULL,
     300             :                                  NULL,
     301             :                                  0);
     302             : }
     303             : 
     304             : 
     305             : /* end of taler-merchant-httpd_private-post-products.c */

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