src/conf.c

   1 /* conf.c - Config file reader
   2  * Copyright 2000-2004 srvx Development Team
   3  *
   4  * This file is part of x3.
   5  *
   6  * x3 is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with srvx; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  19  */
  20
  21 #include "conf.h"
  22 #include "log.h"
  23
  24 static dict_t conf_db;
  25 static conf_reload_func *reload_funcs;
  26 static int num_rfs, size_rfs;
  27
  28 void
  29 conf_register_reload(conf_reload_func crf)
  30 {
  31     if (num_rfs >= size_rfs) {
  32         if (reload_funcs) {
  33             size_rfs <<= 1;
  34             reload_funcs = realloc(reload_funcs, size_rfs*sizeof(conf_reload_func));
  35         } else {
  36             size_rfs = 8;
  37             reload_funcs = calloc(size_rfs, sizeof(conf_reload_func));
  38         }
  39     }
  40     reload_funcs[num_rfs++] = crf;
  41     if (conf_db) {
  42         crf();
  43     }
  44 }
  45
  46 void
  47 conf_call_reload_funcs(void)
  48 {
  49     int i;
  50     for (i=0; i<num_rfs; i++) reload_funcs[i]();
  51 }
  52
  53 int
  54 conf_read(const char *conf_file_name)
  55 {
  56     dict_t old_conf = conf_db;
  57     if (!(conf_db = parse_database(conf_file_name))) {
  58         goto fail;
  59     }
  60     if (reload_funcs) {
  61         conf_call_reload_funcs();
  62     }
  63     if (old_conf && old_conf != conf_db) {
  64         free_database(old_conf);
  65     }
  66     return 1;
  67
  68 fail:
  69     log_module(MAIN_LOG, LOG_ERROR, "Reverting to previous configuration.");
  70     free_database(conf_db);
  71     conf_db = old_conf;
  72     return 0;
  73 }
  74
  75 void
  76 conf_close(void)
  77 {
  78     free_database(conf_db);
  79     free(reload_funcs);
  80 }
  81
  82 struct record_data *
  83 conf_get_node(const char *full_path)
  84 {
  85     return database_get_path(conf_db, full_path);
  86 }
  87
  88 void *
  89 conf_get_data(const char *full_path, enum recdb_type type)
  90 {
  91     return database_get_data(conf_db, full_path, type);
  92 }
  93
  94 const char*
  95 conf_enum_root(dict_iterator_f it, void *extra)
  96 {
  97     return dict_foreach(conf_db, it, extra);
  98 }