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/*
* Copyright (C) 2010-2011 Robert Ancell.
* Author: Robert Ancell <robert.ancell@canonical.com>
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version. See http://www.gnu.org/copyleft/gpl.html the full text of the
* license.
*/
#include <string.h>
#include "configuration.h"
struct ConfigurationPrivate
{
gchar *dir;
GKeyFile *key_file;
GList *sources;
GHashTable *key_sources;
GHashTable *lightdm_keys;
GHashTable *seat_keys;
GHashTable *xdmcp_keys;
GHashTable *vnc_keys;
};
typedef enum
{
KEY_UNKNOWN,
KEY_SUPPORTED,
KEY_DEPRECATED
} KeyStatus;
G_DEFINE_TYPE_WITH_PRIVATE (Configuration, config, G_TYPE_OBJECT)
static Configuration *configuration_instance = NULL;
Configuration *
config_get_instance (void)
{
if (!configuration_instance)
configuration_instance = g_object_new (CONFIGURATION_TYPE, NULL);
return configuration_instance;
}
gboolean
config_load_from_file (Configuration *config, const gchar *path, GList **messages, GError **error)
{
g_autoptr(GKeyFile) key_file = g_key_file_new ();
if (!g_key_file_load_from_file (key_file, path, G_KEY_FILE_NONE, error))
return FALSE;
gchar *source_path = g_strdup (path);
config->priv->sources = g_list_append (config->priv->sources, source_path);
g_auto(GStrv) groups = g_key_file_get_groups (key_file, NULL);
for (int i = 0; groups[i]; i++)
{
/* Move keys from deprecated [SeatDefaults] into [Seat:*] */
const gchar *group = groups[i];
if (strcmp (group, "SeatDefaults") == 0)
{
if (messages)
*messages = g_list_append (*messages, g_strdup (" [SeatDefaults] is now called [Seat:*], please update this configuration"));
group = "Seat:*";
}
/* Check if we know this group */
GHashTable *known_keys = NULL;
if (strcmp (group, "LightDM") == 0)
known_keys = config->priv->lightdm_keys;
else if (g_str_has_prefix (group, "Seat:"))
known_keys = config->priv->seat_keys;
else if (strcmp (group, "XDMCPServer") == 0)
known_keys = config->priv->xdmcp_keys;
else if (strcmp (group, "VNCServer") == 0)
known_keys = config->priv->vnc_keys;
else if (messages)
*messages = g_list_append (*messages, g_strdup_printf (" Unknown group [%s] in configuration", group));
g_auto(GStrv) keys = g_key_file_get_keys (key_file, groups[i], NULL, error);
if (!keys)
break;
for (int j = 0; keys[j]; j++)
{
if (known_keys != NULL)
{
KeyStatus status = GPOINTER_TO_INT (g_hash_table_lookup (known_keys, keys[j]));
if (status == KEY_UNKNOWN) {
if (messages != NULL)
*messages = g_list_append (*messages, g_strdup_printf (" [%s] contains unknown option %s", group, keys[j]));
}
else if (status == KEY_DEPRECATED) {
if (messages != NULL)
*messages = g_list_append (*messages, g_strdup_printf (" [%s] contains deprecated option %s, this can be safely removed", group, keys[j]));
}
}
g_autofree gchar *value = g_key_file_get_value (key_file, groups[i], keys[j], NULL);
g_key_file_set_value (config->priv->key_file, group, keys[j], value);
g_autofree gchar *k = g_strdup_printf ("%s]%s", group, keys[j]);
g_hash_table_insert (config->priv->key_sources, g_steal_pointer (&k), source_path);
}
}
return TRUE;
}
static gchar *
path_make_absolute (gchar *path)
{
if (!path)
return NULL;
if (g_path_is_absolute (path))
return path;
g_autofree gchar *cwd = g_get_current_dir ();
return g_build_filename (cwd, path, NULL);
}
static int
compare_strings (gconstpointer a, gconstpointer b)
{
return strcmp (a, b);
}
static void
load_config_directory (const gchar *path, GList **messages)
{
/* Find configuration files */
g_autoptr(GError) error = NULL;
GDir *dir = g_dir_open (path, 0, &error);
if (error && !g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT))
g_printerr ("Failed to open configuration directory %s: %s\n", path, error->message);
GList *files = NULL;
if (dir)
{
const gchar *name;
while ((name = g_dir_read_name (dir)))
files = g_list_append (files, g_strdup (name));
g_dir_close (dir);
}
/* Sort alphabetically and load onto existing configuration */
files = g_list_sort (files, compare_strings);
for (GList *link = files; link; link = link->next)
{
gchar *filename = link->data;
g_autofree gchar *conf_path = g_build_filename (path, filename, NULL);
if (g_str_has_suffix (filename, ".conf"))
{
if (messages)
*messages = g_list_append (*messages, g_strdup_printf ("Loading configuration from %s", conf_path));
g_autoptr(GError) conf_error = NULL;
config_load_from_file (config_get_instance (), conf_path, messages, &conf_error);
if (conf_error && !g_error_matches (conf_error, G_FILE_ERROR, G_FILE_ERROR_NOENT))
g_printerr ("Failed to load configuration from %s: %s\n", filename, conf_error->message);
}
else
g_debug ("Ignoring configuration file %s, it does not have .conf suffix", conf_path);
}
g_list_free_full (files, g_free);
}
static void
load_config_directories (const gchar * const *dirs, GList **messages)
{
/* Load in reverse order, because XDG_* fields are preference-ordered and the directories in front should override directories in back. */
for (gint i = g_strv_length ((gchar **)dirs) - 1; i >= 0; i--)
{
g_autofree gchar *full_dir = g_build_filename (dirs[i], "lightdm", "lightdm.conf.d", NULL);
if (messages)
*messages = g_list_append (*messages, g_strdup_printf ("Loading configuration dirs from %s", full_dir));
load_config_directory (full_dir, messages);
}
}
gboolean
config_load_from_standard_locations (Configuration *config, const gchar *config_path, GList **messages)
{
g_return_val_if_fail (config->priv->dir == NULL, FALSE);
load_config_directories (g_get_system_data_dirs (), messages);
load_config_directories (g_get_system_config_dirs (), messages);
g_autofree gchar *config_d_dir = NULL;
g_autofree gchar *path = NULL;
if (config_path)
{
path = g_strdup (config_path);
g_autofree gchar *basename = g_path_get_basename (config_path);
config->priv->dir = path_make_absolute (basename);
}
else
{
config->priv->dir = g_strdup (CONFIG_DIR);
config_d_dir = g_build_filename (config->priv->dir, "lightdm.conf.d", NULL);
path = g_build_filename (config->priv->dir, "lightdm.conf", NULL);
}
if (config_d_dir)
load_config_directory (config_d_dir, messages);
if (messages)
*messages = g_list_append (*messages, g_strdup_printf ("Loading configuration from %s", path));
g_autoptr(GError) error = NULL;
if (!config_load_from_file (config, path, messages, &error))
{
gboolean is_empty = error && g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT);
if (config_path || !is_empty)
{
if (error)
g_printerr ("Failed to load configuration from %s: %s\n", path, error->message);
return FALSE;
}
}
return TRUE;
}
const gchar *
config_get_directory (Configuration *config)
{
return config->priv->dir;
}
gchar **
config_get_groups (Configuration *config)
{
return g_key_file_get_groups (config->priv->key_file, NULL);
}
gchar **
config_get_keys (Configuration *config, const gchar *group_name)
{
return g_key_file_get_keys (config->priv->key_file, group_name, NULL, NULL);
}
gboolean
config_has_key (Configuration *config, const gchar *section, const gchar *key)
{
return g_key_file_has_key (config->priv->key_file, section, key, NULL);
}
GList *
config_get_sources (Configuration *config)
{
return config->priv->sources;
}
const gchar *
config_get_source (Configuration *config, const gchar *section, const gchar *key)
{
g_autofree gchar *k = g_strdup_printf ("%s]%s", section, key);
return g_hash_table_lookup (config->priv->key_sources, k);
}
void
config_set_string (Configuration *config, const gchar *section, const gchar *key, const gchar *value)
{
g_key_file_set_string (config->priv->key_file, section, key, value);
}
gchar *
config_get_string (Configuration *config, const gchar *section, const gchar *key)
{
return g_key_file_get_string (config->priv->key_file, section, key, NULL);
}
void
config_set_string_list (Configuration *config, const gchar *section, const gchar *key, const gchar **value, gsize length)
{
g_key_file_set_string_list (config->priv->key_file, section, key, value, length);
}
gchar **
config_get_string_list (Configuration *config, const gchar *section, const gchar *key)
{
return g_key_file_get_string_list (config->priv->key_file, section, key, NULL, NULL);
}
void
config_set_integer (Configuration *config, const gchar *section, const gchar *key, gint value)
{
g_key_file_set_integer (config->priv->key_file, section, key, value);
}
gint
config_get_integer (Configuration *config, const gchar *section, const gchar *key)
{
return g_key_file_get_integer (config->priv->key_file, section, key, NULL);
}
void
config_set_boolean (Configuration *config, const gchar *section, const gchar *key, gboolean value)
{
g_key_file_set_boolean (config->priv->key_file, section, key, value);
}
gboolean
config_get_boolean (Configuration *config, const gchar *section, const gchar *key)
{
/* We don't use the standard function because it doesn't work with trailing whitespace:
* https://bugzilla.gnome.org/show_bug.cgi?id=664740
*/
/*return g_key_file_get_boolean (config->priv->key_file, section, key, NULL);*/
g_autofree gchar *value = g_key_file_get_value (config->priv->key_file, section, key, NULL);
if (!value)
return FALSE;
g_strchomp (value);
return strcmp (value, "true") == 0;
}
static void
config_init (Configuration *config)
{
config->priv = config_get_instance_private (config);
config->priv->key_file = g_key_file_new ();
config->priv->key_sources = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
config->priv->lightdm_keys = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
config->priv->seat_keys = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
config->priv->xdmcp_keys = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
config->priv->vnc_keys = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
/* Build up tables of known keys */
g_hash_table_insert (config->priv->lightdm_keys, "start-default-seat", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "greeter-user", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "minimum-display-number", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "minimum-vt", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "lock-memory", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "user-authority-in-system-dir", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "guest-account-script", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "logind-check-graphical", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "log-directory", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "run-directory", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "cache-directory", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "sessions-directory", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "remote-sessions-directory", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "greeters-directory", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "backup-logs", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "dbus-service", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->lightdm_keys, "logind-load-seats", GINT_TO_POINTER (KEY_DEPRECATED));
g_hash_table_insert (config->priv->seat_keys, "type", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "pam-service", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "pam-autologin-service", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "pam-greeter-service", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xserver-backend", GINT_TO_POINTER (KEY_DEPRECATED));
g_hash_table_insert (config->priv->seat_keys, "xserver-command", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xmir-command", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xserver-config", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xserver-layout", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xserver-allow-tcp", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xserver-share", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xserver-hostname", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xserver-display-number", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xdmcp-manager", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xdmcp-port", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xdmcp-key", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "unity-compositor-command", GINT_TO_POINTER (KEY_DEPRECATED));
g_hash_table_insert (config->priv->seat_keys, "unity-compositor-timeout", GINT_TO_POINTER (KEY_DEPRECATED));
g_hash_table_insert (config->priv->seat_keys, "greeter-session", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "greeter-hide-users", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "greeter-allow-guest", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "greeter-show-manual-login", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "greeter-show-remote-login", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "user-session", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "allow-user-switching", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "allow-guest", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "guest-session", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "session-wrapper", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "greeter-wrapper", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "guest-wrapper", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "display-setup-script", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "display-stopped-script", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "greeter-setup-script", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "session-setup-script", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "session-cleanup-script", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "autologin-guest", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "autologin-user", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "autologin-user-timeout", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "autologin-in-background", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "autologin-session", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "exit-on-failure", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->seat_keys, "xdg-seat", GINT_TO_POINTER (KEY_DEPRECATED));
g_hash_table_insert (config->priv->xdmcp_keys, "enabled", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->xdmcp_keys, "port", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->xdmcp_keys, "listen-address", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->xdmcp_keys, "key", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->xdmcp_keys, "hostname", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->vnc_keys, "enabled", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->vnc_keys, "command", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->vnc_keys, "port", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->vnc_keys, "listen-address", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->vnc_keys, "width", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->vnc_keys, "height", GINT_TO_POINTER (KEY_SUPPORTED));
g_hash_table_insert (config->priv->vnc_keys, "depth", GINT_TO_POINTER (KEY_SUPPORTED));
}
static void
config_finalize (GObject *object)
{
Configuration *self = CONFIGURATION (object);
g_clear_pointer (&self->priv->dir, g_free);
g_clear_pointer (&self->priv->key_file, g_key_file_free);
g_list_free_full (self->priv->sources, g_free);
g_hash_table_destroy (self->priv->key_sources);
g_hash_table_destroy (self->priv->lightdm_keys);
g_hash_table_destroy (self->priv->seat_keys);
g_hash_table_destroy (self->priv->xdmcp_keys);
g_hash_table_destroy (self->priv->vnc_keys);
G_OBJECT_CLASS (config_parent_class)->finalize (object);
}
static void
config_class_init (ConfigurationClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = config_finalize;
}
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