Line data    Source code

       1              : /*
       2              :   This file is part of TALER
       3              :   Copyright (C) 2020, 2023, 2024 Taler Systems SA
       4              : 
       5              :   TALER is free software; you can redistribute it and/or modify it under the
       6              :   terms of the GNU 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 EXCHANGEABILITY 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 taler-auditor-httpd_spa.c
      18              :  * @brief logic to load single page app (/webui)
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "platform.h"
      22              : #include <gnunet/gnunet_util_lib.h>
      23              : #include "taler/taler_util.h"
      24              : #include "taler/taler_mhd_lib.h"
      25              : #include <gnunet/gnunet_mhd_compat.h>
      26              : #include "taler-auditor-httpd_spa.h"
      27              : 
      28              : 
      29              : /**
      30              :  * Resources of the auditor SPA.
      31              :  */
      32              : static struct TALER_MHD_Spa *spa;
      33              : 
      34              : 
      35              : enum MHD_Result
      36            0 : TAH_spa_handler (
      37              :   /* const */ struct TAH_RequestHandler *rh,
      38              :   struct MHD_Connection *connection,
      39              :   void **connection_cls,
      40              :   const char *upload_data,
      41              :   size_t *upload_data_size,
      42              :   const char *const args[])
      43              : {
      44            0 :   const char *path = args[1];
      45              : 
      46            0 :   GNUNET_assert (0 == strcmp (args[0],
      47              :                               "webui"));
      48            0 :   if (NULL == path)
      49            0 :     path = "index.html";
      50            0 :   return TALER_MHD_spa_handler (spa,
      51              :                                 connection,
      52              :                                 path);
      53              : }
      54              : 
      55              : 
      56              : /**
      57              :  * Load the SPA data from an directory.
      58              :  *
      59              :  * If the directory is not found,
      60              :  * fall back to a directory owned by the taler-exchange package.
      61              :  *
      62              :  * @param spa_abs_dir absolute location of the SPA,
      63              :  *        typically packaged separately from the exchange
      64              :  * @param spa_fallback_dir fallback directory, relative
      65              :  *        to the project data.
      66              :  * @returns loaded SPA or NULL on error
      67              :  */
      68              : static struct TALER_MHD_Spa *
      69            5 : spa_load (const char *spa_abs_dir,
      70              :           const char *spa_fallback_dir)
      71              : {
      72            5 :   bool have_spa = false;
      73            5 :   GNUNET_assert (NULL != spa_fallback_dir);
      74            5 :   if (NULL != spa_abs_dir)
      75              :   {
      76              :     struct stat sb;
      77            5 :     have_spa = stat (spa_abs_dir, &sb) == 0 && S_ISDIR (sb.st_mode);
      78            5 :     if (have_spa)
      79              :     {
      80            0 :       return TALER_MHD_spa_load_dir (spa_abs_dir);
      81              :     }
      82            5 :     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
      83              :                 "SPA not found at '%s', using fallback\n",
      84              :                 spa_abs_dir);
      85              :   }
      86            5 :   return TALER_MHD_spa_load (TALER_AUDITOR_project_data (),
      87              :                              spa_fallback_dir);
      88              : }
      89              : 
      90              : 
      91              : enum GNUNET_GenericReturnValue
      92            5 : TAH_spa_init ()
      93              : {
      94            5 :   spa = spa_load (TAH_spa_dir,
      95              :                   "spa/");
      96            5 :   if (NULL == spa)
      97              :   {
      98            0 :     GNUNET_break (0);
      99            0 :     return GNUNET_SYSERR;
     100              :   }
     101            5 :   return GNUNET_OK;
     102              : }
     103              : 
     104              : 
     105              : /**
     106              :  * Nicely shut down.
     107              :  */
     108              : void __attribute__ ((destructor))
     109              : get_spa_fini (void);
     110              : 
     111              : /* declaration to suppress compiler warning */
     112              : void __attribute__ ((destructor))
     113            5 : get_spa_fini ()
     114              : {
     115            5 :   if (NULL != spa)
     116              :   {
     117            5 :     TALER_MHD_spa_free (spa);
     118            5 :     spa = NULL;
     119              :   }
     120            5 : }