Line data    Source code

       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 Lesser 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 General Public License for more details.
      12              : 
      13              :   You should have received a copy of the GNU General Public License along with
      14              :   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
      15              : */
      16              : /**
      17              :  * @file validators.c
      18              :  * @brief Input validators
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "platform.h"
      22              : #include <gnunet/gnunet_util_lib.h>
      23              : #include <gnunet/gnunet_db_lib.h>
      24              : #include <taler/taler_json_lib.h>
      25              : #include "taler_merchant_util.h"
      26              : 
      27              : 
      28              : bool
      29           75 : TALER_MERCHANT_image_data_url_valid (const char *image_data_url)
      30              : {
      31           75 :   if (0 == strcmp (image_data_url,
      32              :                    ""))
      33           23 :     return true;
      34           52 :   if (0 != strncasecmp ("data:image/",
      35              :                         image_data_url,
      36              :                         strlen ("data:image/")))
      37              :   {
      38            0 :     GNUNET_break_op (0);
      39            0 :     return false;
      40              :   }
      41           52 :   if (NULL == strstr (image_data_url,
      42              :                       ";base64,"))
      43              :   {
      44            0 :     GNUNET_break_op (0);
      45            0 :     return false;
      46              :   }
      47           52 :   if (! TALER_url_valid_charset (image_data_url))
      48              :   {
      49            0 :     GNUNET_break_op (0);
      50            0 :     return false;
      51              :   }
      52           52 :   return true;
      53              : }