src/config.c

   1 #include <unistd.h>
   2 #include <fcntl.h>
   3 #include <gio/gio.h>
   4
   5 static GKeyFile *config;
   6
   7 static const gchar *CONFIG_KEYS[] = {
   8         "PrettyHostname",
   9         "IconName",
  10         "ChassisType"
  11 };
  12
  13 /* NULL if key doesn't exist */
  14 gchar *get_option(gchar *key, gchar *group) {
  15
  16         if(!group)
  17                 group = "default";
  18
  19         return g_key_file_get_string(config, group, key, NULL);
  20 }
  21
  22 /* false if key isn't already defined or value is invalid */
  23 gboolean set_option(gchar *key, gchar *value, gchar *group) {
  24
  25         if(!group)
  26                 group = "default";
  27
  28         if(!g_key_file_get_string(config, group, key, NULL))
  29                 return FALSE;
  30
  31         //TODO safteycheck value
  32         g_key_file_set_string(config, group, key, value);
  33         return TRUE;
  34 }
  35
  36 /* initial load/check */
  37 gboolean config_init() {
  38
  39         if(config)
  40                 return TRUE; //already init'd
  41
  42         config = g_key_file_new();
  43
  44         const gchar *config_path;
  45         GStatBuf *config_lstat;
  46
  47         config_path = "/etc/systemd_compat.conf";
  48
  49         /* does conf exist? */
  50         if(g_lstat(config_path, config_lstat)) {
  51
  52                 /* if not, can we write it */
  53                 if(g_access("/etc/", W_OK)) {
  54                         g_printf("%s\n", "no write permissions for /etc/! exiting..");
  55                         return FALSE;
  56                 }
  57
  58                 int config_descr;
  59                 config_descr = g_open(config_path, O_CREAT, 644);
  60
  61                 gchar *posix_hostname;
  62                 posix_hostname = g_malloc(255);
  63
  64                 gethostname(posix_hostname, 255);
  65
  66                 g_key_file_set_string(config, "hostnamed", "Hostname", posix_hostname);
  67                 g_key_file_set_string(config, "hostnamed", "PrettyHostname", "");
  68                 g_key_file_set_string(config, "hostnamed", "IconName", "Computer");
  69                 g_key_file_set_string(config, "hostnamed", "ChassisType", "laptop"); //TODO set these correctly
  70
  71                 if(!g_key_file_save_to_file(config, config_path, NULL)) {
  72                         g_printf("failed to write config to %s!\n", config_path);
  73                         g_free(posix_hostname);
  74                         return FALSE;
  75                 }
  76
  77                 g_printf("wrote config to %s\n", config_path);
  78
  79                 g_free(posix_hostname);
  80
  81                 return TRUE;
  82
  83         /* it does exist, read it */
  84         } else {
  85
  86                 if(!g_access(config_path, W_OK)) {
  87                         g_printf("%s\n", "no write permissions for /etc/! exiting..");
  88                         return FALSE;
  89                 } else if(g_key_file_load_from_file(config, config_path, G_KEY_FILE_KEEP_COMMENTS, NULL))
  90                         return TRUE;
  91
  92                 g_printf("could not read config at %s! exiting..", config_path);
  93                 return FALSE;
  94         }
  95 }