| /* |
| * Copyright © 2010 Codethink Limited |
| * Copyright © 2010 Novell, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| * |
| * Authors: Vincent Untz <vuntz@gnome.org> |
| * Ryan Lortie <desrt@desrt.ca> |
| */ |
| |
| #include "config.h" |
| |
| #include <glib.h> |
| #include <glibintl.h> |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "gfile.h" |
| #include "gfileinfo.h" |
| #include "gfileenumerator.h" |
| #include "gfilemonitor.h" |
| #include "gsimplepermission.h" |
| #include "gsettingsbackendinternal.h" |
| #include "giomodule-priv.h" |
| #include "gportalsupport.h" |
| |
| |
| #define G_TYPE_KEYFILE_SETTINGS_BACKEND (g_keyfile_settings_backend_get_type ()) |
| #define G_KEYFILE_SETTINGS_BACKEND(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \ |
| G_TYPE_KEYFILE_SETTINGS_BACKEND, \ |
| GKeyfileSettingsBackend)) |
| #define G_IS_KEYFILE_SETTINGS_BACKEND(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \ |
| G_TYPE_KEYFILE_SETTINGS_BACKEND)) |
| |
| |
| typedef GSettingsBackendClass GKeyfileSettingsBackendClass; |
| |
| typedef enum { |
| PROP_FILENAME = 1, |
| PROP_ROOT_PATH, |
| PROP_ROOT_GROUP, |
| PROP_DEFAULTS_DIR |
| } GKeyfileSettingsBackendProperty; |
| |
| typedef struct |
| { |
| GSettingsBackend parent_instance; |
| |
| GKeyFile *keyfile; |
| GPermission *permission; |
| gboolean writable; |
| char *defaults_dir; |
| GKeyFile *system_keyfile; |
| GHashTable *system_locks; /* Used as a set, owning the strings it contains */ |
| |
| gchar *prefix; |
| gsize prefix_len; |
| gchar *root_group; |
| gsize root_group_len; |
| |
| GFile *file; |
| GFileMonitor *file_monitor; |
| guint8 digest[32]; |
| GFile *dir; |
| GFileMonitor *dir_monitor; |
| } GKeyfileSettingsBackend; |
| |
| #ifdef G_OS_WIN32 |
| #define EXTENSION_PRIORITY 10 |
| #else |
| #define EXTENSION_PRIORITY (glib_should_use_portal () && !glib_has_dconf_access_in_sandbox () ? 110 : 10) |
| #endif |
| |
| G_DEFINE_TYPE_WITH_CODE (GKeyfileSettingsBackend, |
| g_keyfile_settings_backend, |
| G_TYPE_SETTINGS_BACKEND, |
| _g_io_modules_ensure_extension_points_registered (); |
| g_io_extension_point_implement (G_SETTINGS_BACKEND_EXTENSION_POINT_NAME, |
| g_define_type_id, "keyfile", EXTENSION_PRIORITY)) |
| |
| static void |
| compute_checksum (guint8 *digest, |
| gconstpointer contents, |
| gsize length) |
| { |
| GChecksum *checksum; |
| gsize len = 32; |
| |
| checksum = g_checksum_new (G_CHECKSUM_SHA256); |
| g_checksum_update (checksum, contents, length); |
| g_checksum_get_digest (checksum, digest, &len); |
| g_checksum_free (checksum); |
| g_assert (len == 32); |
| } |
| |
| static gboolean |
| g_keyfile_settings_backend_keyfile_write (GKeyfileSettingsBackend *kfsb, |
| GError **error) |
| { |
| gchar *contents; |
| gsize length; |
| gboolean success; |
| |
| contents = g_key_file_to_data (kfsb->keyfile, &length, NULL); |
| success = g_file_replace_contents (kfsb->file, contents, length, NULL, FALSE, |
| G_FILE_CREATE_REPLACE_DESTINATION | |
| G_FILE_CREATE_PRIVATE, |
| NULL, NULL, error); |
| |
| compute_checksum (kfsb->digest, contents, length); |
| g_free (contents); |
| |
| return success; |
| } |
| |
| static gboolean |
| group_name_matches (const gchar *group_name, |
| const gchar *prefix) |
| { |
| /* sort of like g_str_has_prefix() except that it must be an exact |
| * match or the prefix followed by '/'. |
| * |
| * for example 'a' is a prefix of 'a' and 'a/b' but not 'ab'. |
| */ |
| gint i; |
| |
| for (i = 0; prefix[i]; i++) |
| if (prefix[i] != group_name[i]) |
| return FALSE; |
| |
| return group_name[i] == '\0' || group_name[i] == '/'; |
| } |
| |
| static gboolean |
| convert_path (GKeyfileSettingsBackend *kfsb, |
| const gchar *key, |
| gchar **group, |
| gchar **basename) |
| { |
| gsize key_len = strlen (key); |
| const gchar *last_slash; |
| |
| if (key_len < kfsb->prefix_len || |
| memcmp (key, kfsb->prefix, kfsb->prefix_len) != 0) |
| return FALSE; |
| |
| key_len -= kfsb->prefix_len; |
| key += kfsb->prefix_len; |
| |
| last_slash = strrchr (key, '/'); |
| |
| /* Disallow empty group names or key names */ |
| if (key_len == 0 || |
| (last_slash != NULL && |
| (*(last_slash + 1) == '\0' || |
| last_slash == key))) |
| return FALSE; |
| |
| if (kfsb->root_group) |
| { |
| /* if a root_group was specified, make sure the user hasn't given |
| * a path that ghosts that group name |
| */ |
| if (last_slash != NULL && last_slash - key >= 0 && |
| (gsize) (last_slash - key) == kfsb->root_group_len && |
| memcmp (key, kfsb->root_group, last_slash - key) == 0) |
| return FALSE; |
| } |
| else |
| { |
| /* if no root_group was given, ensure that the user gave a path */ |
| if (last_slash == NULL) |
| return FALSE; |
| } |
| |
| if (group) |
| { |
| if (last_slash != NULL) |
| { |
| *group = g_memdup2 (key, (last_slash - key) + 1); |
| (*group)[(last_slash - key)] = '\0'; |
| } |
| else |
| *group = g_strdup (kfsb->root_group); |
| } |
| |
| if (basename) |
| { |
| if (last_slash != NULL) |
| *basename = g_memdup2 (last_slash + 1, key_len - (last_slash - key)); |
| else |
| *basename = g_strdup (key); |
| } |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| path_is_valid (GKeyfileSettingsBackend *kfsb, |
| const gchar *path) |
| { |
| return convert_path (kfsb, path, NULL, NULL); |
| } |
| |
| static GVariant * |
| get_from_keyfile (GKeyfileSettingsBackend *kfsb, |
| const GVariantType *type, |
| const gchar *key) |
| { |
| GVariant *return_value = NULL; |
| gchar *group, *name; |
| |
| if (convert_path (kfsb, key, &group, &name)) |
| { |
| gchar *str; |
| gchar *sysstr; |
| |
| g_assert (*name); |
| |
| sysstr = g_key_file_get_value (kfsb->system_keyfile, group, name, NULL); |
| str = g_key_file_get_value (kfsb->keyfile, group, name, NULL); |
| if (sysstr && |
| (g_hash_table_contains (kfsb->system_locks, key) || |
| str == NULL)) |
| { |
| g_free (str); |
| str = g_steal_pointer (&sysstr); |
| } |
| |
| if (str) |
| { |
| return_value = g_variant_parse (type, str, NULL, NULL, NULL); |
| |
| /* As a special case, support values of type %G_VARIANT_TYPE_STRING |
| * not being quoted, since users keep forgetting to do it and then |
| * getting confused. */ |
| if (return_value == NULL && |
| g_variant_type_equal (type, G_VARIANT_TYPE_STRING) && |
| str[0] != '\"') |
| { |
| GString *s = g_string_sized_new (strlen (str) + 2); |
| char *p = str; |
| |
| g_string_append_c (s, '\"'); |
| while (*p) |
| { |
| if (*p == '\"') |
| g_string_append_c (s, '\\'); |
| g_string_append_c (s, *p); |
| p++; |
| } |
| g_string_append_c (s, '\"'); |
| return_value = g_variant_parse (type, s->str, NULL, NULL, NULL); |
| g_string_free (s, TRUE); |
| } |
| g_free (str); |
| } |
| |
| g_free (sysstr); |
| |
| g_free (group); |
| g_free (name); |
| } |
| |
| return return_value; |
| } |
| |
| static gboolean |
| set_to_keyfile (GKeyfileSettingsBackend *kfsb, |
| const gchar *key, |
| GVariant *value) |
| { |
| gchar *group, *name; |
| |
| if (g_hash_table_contains (kfsb->system_locks, key)) |
| return FALSE; |
| |
| if (convert_path (kfsb, key, &group, &name)) |
| { |
| if (value) |
| { |
| gchar *str = g_variant_print (value, FALSE); |
| g_key_file_set_value (kfsb->keyfile, group, name, str); |
| g_variant_unref (g_variant_ref_sink (value)); |
| g_free (str); |
| } |
| else |
| { |
| if (*name == '\0') |
| { |
| gchar **groups; |
| gint i; |
| |
| groups = g_key_file_get_groups (kfsb->keyfile, NULL); |
| |
| for (i = 0; groups[i]; i++) |
| if (group_name_matches (groups[i], group)) |
| g_key_file_remove_group (kfsb->keyfile, groups[i], NULL); |
| |
| g_strfreev (groups); |
| } |
| else |
| g_key_file_remove_key (kfsb->keyfile, group, name, NULL); |
| } |
| |
| g_free (group); |
| g_free (name); |
| |
| return TRUE; |
| } |
| |
| return FALSE; |
| } |
| |
| static GVariant * |
| g_keyfile_settings_backend_read (GSettingsBackend *backend, |
| const gchar *key, |
| const GVariantType *expected_type, |
| gboolean default_value) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (backend); |
| |
| if (default_value) |
| return NULL; |
| |
| return get_from_keyfile (kfsb, expected_type, key); |
| } |
| |
| typedef struct |
| { |
| GKeyfileSettingsBackend *kfsb; |
| gboolean failed; |
| } WriteManyData; |
| |
| static gboolean |
| g_keyfile_settings_backend_write_one (gpointer key, |
| gpointer value, |
| gpointer user_data) |
| { |
| WriteManyData *data = user_data; |
| gboolean success G_GNUC_UNUSED /* when compiling with G_DISABLE_ASSERT */; |
| |
| success = set_to_keyfile (data->kfsb, key, value); |
| g_assert (success); |
| |
| return FALSE; |
| } |
| |
| static gboolean |
| g_keyfile_settings_backend_check_one (gpointer key, |
| gpointer value, |
| gpointer user_data) |
| { |
| WriteManyData *data = user_data; |
| |
| return data->failed = g_hash_table_contains (data->kfsb->system_locks, key) || |
| !path_is_valid (data->kfsb, key); |
| } |
| |
| static gboolean |
| g_keyfile_settings_backend_write_tree (GSettingsBackend *backend, |
| GTree *tree, |
| gpointer origin_tag) |
| { |
| WriteManyData data = { G_KEYFILE_SETTINGS_BACKEND (backend), 0 }; |
| gboolean success; |
| GError *error = NULL; |
| |
| if (!data.kfsb->writable) |
| return FALSE; |
| |
| g_tree_foreach (tree, g_keyfile_settings_backend_check_one, &data); |
| |
| if (data.failed) |
| return FALSE; |
| |
| g_tree_foreach (tree, g_keyfile_settings_backend_write_one, &data); |
| success = g_keyfile_settings_backend_keyfile_write (data.kfsb, &error); |
| if (error) |
| { |
| g_warning ("Failed to write keyfile to %s: %s", g_file_peek_path (data.kfsb->file), error->message); |
| g_error_free (error); |
| } |
| |
| g_settings_backend_changed_tree (backend, tree, origin_tag); |
| |
| return success; |
| } |
| |
| static gboolean |
| g_keyfile_settings_backend_write (GSettingsBackend *backend, |
| const gchar *key, |
| GVariant *value, |
| gpointer origin_tag) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (backend); |
| gboolean success; |
| GError *error = NULL; |
| |
| if (!kfsb->writable) |
| return FALSE; |
| |
| success = set_to_keyfile (kfsb, key, value); |
| |
| if (success) |
| { |
| g_settings_backend_changed (backend, key, origin_tag); |
| success = g_keyfile_settings_backend_keyfile_write (kfsb, &error); |
| if (error) |
| { |
| g_warning ("Failed to write keyfile to %s: %s", g_file_peek_path (kfsb->file), error->message); |
| g_error_free (error); |
| } |
| } |
| |
| return success; |
| } |
| |
| static void |
| g_keyfile_settings_backend_reset (GSettingsBackend *backend, |
| const gchar *key, |
| gpointer origin_tag) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (backend); |
| GError *error = NULL; |
| |
| if (set_to_keyfile (kfsb, key, NULL)) |
| { |
| g_keyfile_settings_backend_keyfile_write (kfsb, &error); |
| if (error) |
| { |
| g_warning ("Failed to write keyfile to %s: %s", g_file_peek_path (kfsb->file), error->message); |
| g_error_free (error); |
| } |
| } |
| |
| g_settings_backend_changed (backend, key, origin_tag); |
| } |
| |
| static gboolean |
| g_keyfile_settings_backend_get_writable (GSettingsBackend *backend, |
| const gchar *name) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (backend); |
| |
| return kfsb->writable && |
| !g_hash_table_contains (kfsb->system_locks, name) && |
| path_is_valid (kfsb, name); |
| } |
| |
| static GPermission * |
| g_keyfile_settings_backend_get_permission (GSettingsBackend *backend, |
| const gchar *path) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (backend); |
| |
| return g_object_ref (kfsb->permission); |
| } |
| |
| static void |
| keyfile_to_tree (GKeyfileSettingsBackend *kfsb, |
| GTree *tree, |
| GKeyFile *keyfile, |
| gboolean dup_check) |
| { |
| gchar **groups; |
| gint i; |
| |
| groups = g_key_file_get_groups (keyfile, NULL); |
| for (i = 0; groups[i]; i++) |
| { |
| gboolean is_root_group; |
| gchar **keys; |
| gint j; |
| |
| is_root_group = g_strcmp0 (kfsb->root_group, groups[i]) == 0; |
| |
| /* reject group names that will form invalid key names */ |
| if (!is_root_group && |
| (g_str_has_prefix (groups[i], "/") || |
| g_str_has_suffix (groups[i], "/") || strstr (groups[i], "//"))) |
| continue; |
| |
| keys = g_key_file_get_keys (keyfile, groups[i], NULL, NULL); |
| g_assert (keys != NULL); |
| |
| for (j = 0; keys[j]; j++) |
| { |
| gchar *path, *value; |
| |
| /* reject key names with slashes in them */ |
| if (strchr (keys[j], '/')) |
| continue; |
| |
| if (is_root_group) |
| path = g_strdup_printf ("%s%s", kfsb->prefix, keys[j]); |
| else |
| path = g_strdup_printf ("%s%s/%s", kfsb->prefix, groups[i], keys[j]); |
| |
| value = g_key_file_get_value (keyfile, groups[i], keys[j], NULL); |
| |
| if (dup_check && g_strcmp0 (g_tree_lookup (tree, path), value) == 0) |
| { |
| g_tree_remove (tree, path); |
| g_free (value); |
| g_free (path); |
| } |
| else |
| g_tree_insert (tree, path, value); |
| } |
| |
| g_strfreev (keys); |
| } |
| g_strfreev (groups); |
| } |
| |
| static void |
| g_keyfile_settings_backend_keyfile_reload (GKeyfileSettingsBackend *kfsb) |
| { |
| guint8 digest[32]; |
| gchar *contents; |
| gsize length; |
| |
| contents = NULL; |
| length = 0; |
| |
| g_file_load_contents (kfsb->file, NULL, &contents, &length, NULL, NULL); |
| compute_checksum (digest, contents, length); |
| |
| if (memcmp (kfsb->digest, digest, sizeof digest) != 0) |
| { |
| GKeyFile *keyfiles[2]; |
| GTree *tree; |
| |
| tree = g_tree_new_full ((GCompareDataFunc) strcmp, NULL, |
| g_free, g_free); |
| |
| keyfiles[0] = kfsb->keyfile; |
| keyfiles[1] = g_key_file_new (); |
| |
| if (length > 0) |
| g_key_file_load_from_data (keyfiles[1], contents, length, |
| G_KEY_FILE_KEEP_COMMENTS | |
| G_KEY_FILE_KEEP_TRANSLATIONS, NULL); |
| |
| keyfile_to_tree (kfsb, tree, keyfiles[0], FALSE); |
| keyfile_to_tree (kfsb, tree, keyfiles[1], TRUE); |
| g_key_file_free (keyfiles[0]); |
| kfsb->keyfile = keyfiles[1]; |
| |
| if (g_tree_nnodes (tree) > 0) |
| g_settings_backend_changed_tree (&kfsb->parent_instance, tree, NULL); |
| |
| g_tree_unref (tree); |
| |
| memcpy (kfsb->digest, digest, sizeof digest); |
| } |
| |
| g_free (contents); |
| } |
| |
| static void |
| g_keyfile_settings_backend_keyfile_writable (GKeyfileSettingsBackend *kfsb) |
| { |
| GFileInfo *fileinfo; |
| gboolean writable; |
| |
| fileinfo = g_file_query_info (kfsb->dir, "access::*", 0, NULL, NULL); |
| |
| if (fileinfo) |
| { |
| writable = |
| g_file_info_get_attribute_boolean (fileinfo, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE) && |
| g_file_info_get_attribute_boolean (fileinfo, G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE); |
| g_object_unref (fileinfo); |
| } |
| else |
| writable = FALSE; |
| |
| if (writable != kfsb->writable) |
| { |
| kfsb->writable = writable; |
| g_settings_backend_path_writable_changed (&kfsb->parent_instance, "/"); |
| } |
| } |
| |
| static void |
| g_keyfile_settings_backend_finalize (GObject *object) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (object); |
| |
| g_key_file_free (kfsb->keyfile); |
| g_object_unref (kfsb->permission); |
| g_key_file_unref (kfsb->system_keyfile); |
| g_hash_table_unref (kfsb->system_locks); |
| g_free (kfsb->defaults_dir); |
| |
| if (kfsb->file_monitor) |
| { |
| g_file_monitor_cancel (kfsb->file_monitor); |
| g_object_unref (kfsb->file_monitor); |
| } |
| g_object_unref (kfsb->file); |
| |
| if (kfsb->dir_monitor) |
| { |
| g_file_monitor_cancel (kfsb->dir_monitor); |
| g_object_unref (kfsb->dir_monitor); |
| } |
| g_object_unref (kfsb->dir); |
| |
| g_free (kfsb->root_group); |
| g_free (kfsb->prefix); |
| |
| G_OBJECT_CLASS (g_keyfile_settings_backend_parent_class)->finalize (object); |
| } |
| |
| static void |
| g_keyfile_settings_backend_init (GKeyfileSettingsBackend *kfsb) |
| { |
| } |
| |
| static void |
| file_changed (GFileMonitor *monitor, |
| GFile *file, |
| GFile *other_file, |
| GFileMonitorEvent event_type, |
| gpointer user_data) |
| { |
| GKeyfileSettingsBackend *kfsb = user_data; |
| |
| /* Ignore file deletions, let the GKeyFile content remain in tact. */ |
| if (event_type != G_FILE_MONITOR_EVENT_DELETED) |
| g_keyfile_settings_backend_keyfile_reload (kfsb); |
| } |
| |
| static void |
| dir_changed (GFileMonitor *monitor, |
| GFile *file, |
| GFile *other_file, |
| GFileMonitorEvent event_type, |
| gpointer user_data) |
| { |
| GKeyfileSettingsBackend *kfsb = user_data; |
| |
| g_keyfile_settings_backend_keyfile_writable (kfsb); |
| } |
| |
| static void |
| load_system_settings (GKeyfileSettingsBackend *kfsb) |
| { |
| GError *error = NULL; |
| const char *dir = "/etc/glib-2.0/settings"; |
| char *path; |
| char *contents; |
| |
| kfsb->system_keyfile = g_key_file_new (); |
| kfsb->system_locks = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL); |
| |
| if (kfsb->defaults_dir) |
| dir = kfsb->defaults_dir; |
| |
| path = g_build_filename (dir, "defaults", NULL); |
| |
| /* The defaults are in the same keyfile format that we use for the settings. |
| * It can be produced from a dconf database using: dconf dump |
| */ |
| if (!g_key_file_load_from_file (kfsb->system_keyfile, path, G_KEY_FILE_NONE, &error)) |
| { |
| if (!g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT)) |
| g_warning ("Failed to read %s: %s", path, error->message); |
| g_clear_error (&error); |
| } |
| else |
| g_debug ("Loading default settings from %s", path); |
| |
| g_free (path); |
| |
| path = g_build_filename (dir, "locks", NULL); |
| |
| /* The locks file is a text file containing a list paths to lock, one per line. |
| * It can be produced from a dconf database using: dconf list-locks |
| */ |
| if (!g_file_get_contents (path, &contents, NULL, &error)) |
| { |
| if (!g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT)) |
| g_warning ("Failed to read %s: %s", path, error->message); |
| g_clear_error (&error); |
| } |
| else |
| { |
| char **lines; |
| gsize i; |
| |
| g_debug ("Loading locks from %s", path); |
| |
| lines = g_strsplit (contents, "\n", 0); |
| for (i = 0; lines[i]; i++) |
| { |
| char *line = lines[i]; |
| if (line[0] == '#' || line[0] == '\0') |
| { |
| g_free (line); |
| continue; |
| } |
| |
| g_debug ("Locking key %s", line); |
| g_hash_table_add (kfsb->system_locks, g_steal_pointer (&line)); |
| } |
| |
| g_free (lines); |
| } |
| g_free (contents); |
| |
| g_free (path); |
| } |
| |
| static void |
| g_keyfile_settings_backend_constructed (GObject *object) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (object); |
| GError *error = NULL; |
| const char *path; |
| |
| if (kfsb->file == NULL) |
| { |
| char *filename = g_build_filename (g_get_user_config_dir (), |
| "glib-2.0", "settings", "keyfile", |
| NULL); |
| kfsb->file = g_file_new_for_path (filename); |
| g_free (filename); |
| } |
| |
| if (kfsb->prefix == NULL) |
| { |
| kfsb->prefix = g_strdup ("/"); |
| kfsb->prefix_len = 1; |
| } |
| |
| kfsb->keyfile = g_key_file_new (); |
| kfsb->permission = g_simple_permission_new (TRUE); |
| |
| kfsb->dir = g_file_get_parent (kfsb->file); |
| path = g_file_peek_path (kfsb->dir); |
| if (g_mkdir_with_parents (path, 0700) == -1) |
| g_warning ("Failed to create %s: %s", path, g_strerror (errno)); |
| |
| kfsb->file_monitor = g_file_monitor (kfsb->file, G_FILE_MONITOR_NONE, NULL, &error); |
| if (!kfsb->file_monitor) |
| { |
| g_warning ("Failed to create file monitor for %s: %s", g_file_peek_path (kfsb->file), error->message); |
| g_clear_error (&error); |
| } |
| else |
| { |
| g_signal_connect (kfsb->file_monitor, "changed", |
| G_CALLBACK (file_changed), kfsb); |
| } |
| |
| kfsb->dir_monitor = g_file_monitor (kfsb->dir, G_FILE_MONITOR_NONE, NULL, &error); |
| if (!kfsb->dir_monitor) |
| { |
| g_warning ("Failed to create file monitor for %s: %s", g_file_peek_path (kfsb->file), error->message); |
| g_clear_error (&error); |
| } |
| else |
| { |
| g_signal_connect (kfsb->dir_monitor, "changed", |
| G_CALLBACK (dir_changed), kfsb); |
| } |
| |
| compute_checksum (kfsb->digest, NULL, 0); |
| |
| g_keyfile_settings_backend_keyfile_writable (kfsb); |
| g_keyfile_settings_backend_keyfile_reload (kfsb); |
| |
| load_system_settings (kfsb); |
| } |
| |
| static void |
| g_keyfile_settings_backend_set_property (GObject *object, |
| guint prop_id, |
| const GValue *value, |
| GParamSpec *pspec) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (object); |
| |
| switch ((GKeyfileSettingsBackendProperty)prop_id) |
| { |
| case PROP_FILENAME: |
| /* Construct only. */ |
| g_assert (kfsb->file == NULL); |
| if (g_value_get_string (value)) |
| kfsb->file = g_file_new_for_path (g_value_get_string (value)); |
| break; |
| |
| case PROP_ROOT_PATH: |
| /* Construct only. */ |
| g_assert (kfsb->prefix == NULL); |
| kfsb->prefix = g_value_dup_string (value); |
| if (kfsb->prefix) |
| kfsb->prefix_len = strlen (kfsb->prefix); |
| break; |
| |
| case PROP_ROOT_GROUP: |
| /* Construct only. */ |
| g_assert (kfsb->root_group == NULL); |
| kfsb->root_group = g_value_dup_string (value); |
| if (kfsb->root_group) |
| kfsb->root_group_len = strlen (kfsb->root_group); |
| break; |
| |
| case PROP_DEFAULTS_DIR: |
| /* Construct only. */ |
| g_assert (kfsb->defaults_dir == NULL); |
| kfsb->defaults_dir = g_value_dup_string (value); |
| break; |
| |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| g_keyfile_settings_backend_get_property (GObject *object, |
| guint prop_id, |
| GValue *value, |
| GParamSpec *pspec) |
| { |
| GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (object); |
| |
| switch ((GKeyfileSettingsBackendProperty)prop_id) |
| { |
| case PROP_FILENAME: |
| g_value_set_string (value, g_file_peek_path (kfsb->file)); |
| break; |
| |
| case PROP_ROOT_PATH: |
| g_value_set_string (value, kfsb->prefix); |
| break; |
| |
| case PROP_ROOT_GROUP: |
| g_value_set_string (value, kfsb->root_group); |
| break; |
| |
| case PROP_DEFAULTS_DIR: |
| g_value_set_string (value, kfsb->defaults_dir); |
| break; |
| |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| g_keyfile_settings_backend_class_init (GKeyfileSettingsBackendClass *class) |
| { |
| GObjectClass *object_class = G_OBJECT_CLASS (class); |
| |
| object_class->finalize = g_keyfile_settings_backend_finalize; |
| object_class->constructed = g_keyfile_settings_backend_constructed; |
| object_class->get_property = g_keyfile_settings_backend_get_property; |
| object_class->set_property = g_keyfile_settings_backend_set_property; |
| |
| class->read = g_keyfile_settings_backend_read; |
| class->write = g_keyfile_settings_backend_write; |
| class->write_tree = g_keyfile_settings_backend_write_tree; |
| class->reset = g_keyfile_settings_backend_reset; |
| class->get_writable = g_keyfile_settings_backend_get_writable; |
| class->get_permission = g_keyfile_settings_backend_get_permission; |
| /* No need to implement subscribed/unsubscribe: the only point would be to |
| * stop monitoring the file when there's no GSettings anymore, which is no |
| * big win. |
| */ |
| |
| /** |
| * GKeyfileSettingsBackend:filename: |
| * |
| * The location where the settings are stored on disk. |
| * |
| * Defaults to `$XDG_CONFIG_HOME/glib-2.0/settings/keyfile`. |
| */ |
| g_object_class_install_property (object_class, |
| PROP_FILENAME, |
| g_param_spec_string ("filename", |
| P_("Filename"), |
| P_("The filename"), |
| NULL, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | |
| G_PARAM_STATIC_STRINGS)); |
| |
| /** |
| * GKeyfileSettingsBackend:root-path: |
| * |
| * All settings read to or written from the backend must fall under the |
| * path given in @root_path (which must start and end with a slash and |
| * not contain two consecutive slashes). @root_path may be "/". |
| * |
| * Defaults to "/". |
| */ |
| g_object_class_install_property (object_class, |
| PROP_ROOT_PATH, |
| g_param_spec_string ("root-path", |
| P_("Root path"), |
| P_("The root path"), |
| NULL, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | |
| G_PARAM_STATIC_STRINGS)); |
| |
| /** |
| * GKeyfileSettingsBackend:root-group: |
| * |
| * If @root_group is non-%NULL then it specifies the name of the keyfile |
| * group used for keys that are written directly below the root path. |
| * |
| * Defaults to NULL. |
| */ |
| g_object_class_install_property (object_class, |
| PROP_ROOT_GROUP, |
| g_param_spec_string ("root-group", |
| P_("Root group"), |
| P_("The root group"), |
| NULL, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | |
| G_PARAM_STATIC_STRINGS)); |
| |
| /** |
| * GKeyfileSettingsBackend:default-dir: |
| * |
| * The directory where the system defaults and locks are located. |
| * |
| * Defaults to `/etc/glib-2.0/settings`. |
| */ |
| g_object_class_install_property (object_class, |
| PROP_DEFAULTS_DIR, |
| g_param_spec_string ("defaults-dir", |
| P_("Default dir"), |
| P_("Defaults dir"), |
| NULL, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | |
| G_PARAM_STATIC_STRINGS)); |
| } |
| |
| /** |
| * g_keyfile_settings_backend_new: |
| * @filename: the filename of the keyfile |
| * @root_path: the path under which all settings keys appear |
| * @root_group: (nullable): the group name corresponding to |
| * @root_path, or %NULL |
| * |
| * Creates a keyfile-backed #GSettingsBackend. |
| * |
| * The filename of the keyfile to use is given by @filename. |
| * |
| * All settings read to or written from the backend must fall under the |
| * path given in @root_path (which must start and end with a slash and |
| * not contain two consecutive slashes). @root_path may be "/". |
| * |
| * If @root_group is non-%NULL then it specifies the name of the keyfile |
| * group used for keys that are written directly below @root_path. For |
| * example, if @root_path is "/apps/example/" and @root_group is |
| * "toplevel", then settings the key "/apps/example/enabled" to a value |
| * of %TRUE will cause the following to appear in the keyfile: |
| * |
| * |[ |
| * [toplevel] |
| * enabled=true |
| * ]| |
| * |
| * If @root_group is %NULL then it is not permitted to store keys |
| * directly below the @root_path. |
| * |
| * For keys not stored directly below @root_path (ie: in a sub-path), |
| * the name of the subpath (with the final slash stripped) is used as |
| * the name of the keyfile group. To continue the example, if |
| * "/apps/example/profiles/default/font-size" were set to |
| * 12 then the following would appear in the keyfile: |
| * |
| * |[ |
| * [profiles/default] |
| * font-size=12 |
| * ]| |
| * |
| * The backend will refuse writes (and return writability as being |
| * %FALSE) for keys outside of @root_path and, in the event that |
| * @root_group is %NULL, also for keys directly under @root_path. |
| * Writes will also be refused if the backend detects that it has the |
| * inability to rewrite the keyfile (ie: the containing directory is not |
| * writable). |
| * |
| * There is no checking done for your key namespace clashing with the |
| * syntax of the key file format. For example, if you have '[' or ']' |
| * characters in your path names or '=' in your key names you may be in |
| * trouble. |
| * |
| * The backend reads default values from a keyfile called `defaults` in |
| * the directory specified by the #GKeyfileSettingsBackend:defaults-dir property, |
| * and a list of locked keys from a text file with the name `locks` in |
| * the same location. |
| * |
| * Returns: (transfer full): a keyfile-backed #GSettingsBackend |
| **/ |
| GSettingsBackend * |
| g_keyfile_settings_backend_new (const gchar *filename, |
| const gchar *root_path, |
| const gchar *root_group) |
| { |
| g_return_val_if_fail (filename != NULL, NULL); |
| g_return_val_if_fail (root_path != NULL, NULL); |
| g_return_val_if_fail (g_str_has_prefix (root_path, "/"), NULL); |
| g_return_val_if_fail (g_str_has_suffix (root_path, "/"), NULL); |
| g_return_val_if_fail (strstr (root_path, "//") == NULL, NULL); |
| |
| return G_SETTINGS_BACKEND (g_object_new (G_TYPE_KEYFILE_SETTINGS_BACKEND, |
| "filename", filename, |
| "root-path", root_path, |
| "root-group", root_group, |
| NULL)); |
| } |
