src/config.c

   1 /*
   2  * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <unistd.h>
  18 #include <fcntl.h>
  19 #include <gio/gio.h>
  20 #include "config.h"
  21
  22 static GKeyFile *config;
  23 static int config_descr;
  24 static gchar *data_dir;
  25
  26 /* NULL if key doesn't exist */
  27 gchar *get_option(gchar *key, gchar *group) {
  28
  29     if(!group)
  30         group = "default";
  31
  32     return g_key_file_get_string(config, group, key, NULL);
  33 }
  34
  35 /* false if key isn't already defined or value is invalid */
  36 gboolean set_option(gchar *key, gchar *value, gchar *group) {
  37
  38     if(!group)
  39         group = "default";
  40
  41     if(!g_key_file_get_string(config, group, key, NULL))
  42         return FALSE;
  43
  44     /* TODO safteycheck value */
  45     g_key_file_set_string(config, group, key, value);
  46     return TRUE;
  47 }
  48
  49 /* initial load/check */
  50 gboolean config_init() {
  51
  52     /* config is already set */
  53     if(config)
  54         return TRUE;
  55
  56     config = g_key_file_new();
  57
  58     const gchar *config_path;
  59     GStatBuf *config_lstat;
  60     int config_lstat_ret;
  61
  62     config_path = "/etc/systemd_compat.conf";
  63     config_lstat_ret = g_lstat(config_path, config_lstat);
  64
  65     if(g_access(config_path, W_OK)) {
  66
  67         g_printf("%s\n", "no write permissions for /etc/! exiting..");
  68         return FALSE;
  69
  70     } else if(g_key_file_load_from_file(config, config_path, G_KEY_FILE_KEEP_COMMENTS, NULL))
  71         return TRUE;
  72
  73     g_printf("could not read config at %s! exiting..", config_path);
  74     return FALSE;
  75 }
  76
  77 void clean_config() {
  78
  79     /* TODO g_ptr_array all of this */
  80     g_free(config);
  81     g_free(data_dir);
  82     g_close(config_descr, NULL);
  83 }