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Merge branch 'settings-portal' into 'master'

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Settings portal

See merge request GNOME/glib!450
This commit is contained in:
Philip Withnall 2019-01-21 12:02:43 +00:00
commit be10f19752
2 changed files with 339 additions and 59 deletions
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396
gio/gkeyfilesettingsbackend.c
View File

@ -21,14 +21,20 @@
#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 "gsettingsbackend.h"
#include "gsettingsbackendinternal.h"
#include "giomodule-priv.h"
#include "gportalsupport.h"
#define G_TYPE_KEYFILE_SETTINGS_BACKEND (g_keyfile_settings_backend_get_type ())
@ -41,6 +47,13 @@
typedef GSettingsBackendClass GKeyfileSettingsBackendClass;
typedef enum {
PROP_FILENAME = 1,
PROP_ROOT_PATH,
PROP_ROOT_GROUP,
PROP_DEFAULTS_DIR
} GKeyfileSettingsBackendProperty;
typedef struct
{
GSettingsBackend parent_instance;
@ -48,6 +61,9 @@ typedef struct
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;
gint prefix_len;
@ -61,10 +77,18 @@ typedef struct
GFileMonitor *dir_monitor;
} GKeyfileSettingsBackend;
static GType g_keyfile_settings_backend_get_type (void);
G_DEFINE_TYPE (GKeyfileSettingsBackend,
g_keyfile_settings_backend,
G_TYPE_SETTINGS_BACKEND)
#ifdef G_OS_WIN32
#define EXTENSION_PRIORITY 10
#else
#define EXTENSION_PRIORITY (glib_should_use_portal () ? 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,
@ -184,10 +208,19 @@ get_from_keyfile (GKeyfileSettingsBackend *kfsb,
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)
{
@ -195,6 +228,8 @@ get_from_keyfile (GKeyfileSettingsBackend *kfsb,
g_free (str);
}
g_free (sysstr);
g_free (group);
g_free (name);
}
@ -209,6 +244,9 @@ set_to_keyfile (GKeyfileSettingsBackend *kfsb,
{
gchar *group, *name;
if (g_hash_table_contains (kfsb->system_locks, key))
return FALSE;
if (convert_path (kfsb, key, &group, &name))
{
if (value)
@ -287,7 +325,8 @@ g_keyfile_settings_backend_check_one (gpointer key,
{
WriteManyData *data = user_data;
return data->failed = !path_is_valid (data->kfsb, key);
return data->failed = g_hash_table_contains (data->kfsb->system_locks, key) ||
!path_is_valid (data->kfsb, key);
}
static gboolean
@ -355,7 +394,9 @@ g_keyfile_settings_backend_get_writable (GSettingsBackend *backend,
{
GKeyfileSettingsBackend *kfsb = G_KEYFILE_SETTINGS_BACKEND (backend);
return kfsb->writable && path_is_valid (kfsb, name);
return kfsb->writable &&
!g_hash_table_contains (kfsb->system_locks, name) &&
path_is_valid (kfsb, name);
}
static GPermission *
@ -501,6 +542,9 @@ g_keyfile_settings_backend_finalize (GObject *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);
g_file_monitor_cancel (kfsb->file_monitor);
g_object_unref (kfsb->file_monitor);
@ -522,25 +566,6 @@ g_keyfile_settings_backend_init (GKeyfileSettingsBackend *kfsb)
{
}
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;
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.
*/
}
static void
file_changed (GFileMonitor *monitor,
GFile *file,
@ -567,6 +592,282 @@ dir_changed (GFileMonitor *monitor,
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);
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);
g_file_make_directory_with_parents (kfsb->dir, NULL, NULL);
kfsb->file_monitor = g_file_monitor (kfsb->file, G_FILE_MONITOR_NONE, NULL, NULL);
kfsb->dir_monitor = g_file_monitor (kfsb->dir, G_FILE_MONITOR_NONE, NULL, NULL);
compute_checksum (kfsb->digest, NULL, 0);
g_signal_connect (kfsb->file_monitor, "changed",
G_CALLBACK (file_changed), kfsb);
g_signal_connect (kfsb->dir_monitor, "changed",
G_CALLBACK (dir_changed), kfsb);
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);
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
@ -619,6 +920,11 @@ dir_changed (GFileMonitor *monitor,
* 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 *
@ -626,43 +932,15 @@ g_keyfile_settings_backend_new (const gchar *filename,
const gchar *root_path,
const gchar *root_group)
{
GKeyfileSettingsBackend *kfsb;
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);
kfsb = g_object_new (G_TYPE_KEYFILE_SETTINGS_BACKEND, NULL);
kfsb->keyfile = g_key_file_new ();
kfsb->permission = g_simple_permission_new (TRUE);
kfsb->file = g_file_new_for_path (filename);
kfsb->dir = g_file_get_parent (kfsb->file);
g_file_make_directory_with_parents (kfsb->dir, NULL, NULL);
kfsb->file_monitor = g_file_monitor (kfsb->file, 0, NULL, NULL);
kfsb->dir_monitor = g_file_monitor (kfsb->dir, 0, NULL, NULL);
kfsb->prefix_len = strlen (root_path);
kfsb->prefix = g_strdup (root_path);
if (root_group)
{
kfsb->root_group_len = strlen (root_group);
kfsb->root_group = g_strdup (root_group);
}
compute_checksum (kfsb->digest, NULL, 0);
g_signal_connect (kfsb->file_monitor, "changed",
G_CALLBACK (file_changed), kfsb);
g_signal_connect (kfsb->dir_monitor, "changed",
G_CALLBACK (dir_changed), kfsb);
g_keyfile_settings_backend_keyfile_writable (kfsb);
g_keyfile_settings_backend_keyfile_reload (kfsb);
return G_SETTINGS_BACKEND (kfsb);
return G_SETTINGS_BACKEND (g_object_new (G_TYPE_KEYFILE_SETTINGS_BACKEND,
"filename", filename,
"root-path", root_path,
"root-group", root_group,
NULL));
}

2
gio/gsettingsbackendinternal.h
View File

@ -87,6 +87,8 @@ GType g_null_settings_backend_get_type (void);
GType g_memory_settings_backend_get_type (void);
GType g_keyfile_settings_backend_get_type (void);
#ifdef HAVE_COCOA
GType g_nextstep_settings_backend_get_type (void);
#endif