diff options
Diffstat (limited to 'common/gdm-settings-desktop-backend.c')
| -rw-r--r-- | common/gdm-settings-desktop-backend.c | 437 |
1 files changed, 437 insertions, 0 deletions
diff --git a/common/gdm-settings-desktop-backend.c b/common/gdm-settings-desktop-backend.c new file mode 100644 index 0000000..e899fe5 --- /dev/null +++ b/common/gdm-settings-desktop-backend.c @@ -0,0 +1,437 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> + * + * 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 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <fcntl.h> +#include <unistd.h> +#include <string.h> +#include <signal.h> +#include <sys/stat.h> +#include <sys/types.h> + +#include <glib.h> +#include <glib/gi18n.h> +#include <glib/gstdio.h> +#include <glib-object.h> + +#include "gdm-settings-desktop-backend.h" + +struct _GdmSettingsDesktopBackend +{ + GdmSettingsBackend parent; + + char *filename; + GKeyFile *key_file; + gboolean dirty; + guint save_id; +}; + +enum { + PROP_0, + PROP_FILENAME, +}; + +static void gdm_settings_desktop_backend_class_init (GdmSettingsDesktopBackendClass *klass); +static void gdm_settings_desktop_backend_init (GdmSettingsDesktopBackend *settings_desktop_backend); +static void gdm_settings_desktop_backend_finalize (GObject *object); + +G_DEFINE_TYPE (GdmSettingsDesktopBackend, gdm_settings_desktop_backend, GDM_TYPE_SETTINGS_BACKEND) + +static void +_gdm_settings_desktop_backend_set_file_name (GdmSettingsDesktopBackend *backend, + const char *filename) +{ + gboolean res; + GError *error; + char *contents; + + g_free (backend->filename); + backend->filename = g_strdup (filename); + + backend->key_file = g_key_file_new (); + + error = NULL; + res = g_key_file_load_from_file (backend->key_file, + backend->filename, + G_KEY_FILE_KEEP_COMMENTS | G_KEY_FILE_KEEP_TRANSLATIONS, + &error); + if (! res) { + g_warning ("Unable to load file '%s': %s", backend->filename, error->message); + } + + contents = g_key_file_to_data (backend->key_file, NULL, NULL); + + if (contents != NULL) { + g_debug ("GdmSettings: %s is:\n%s\n", backend->filename, contents); + g_free (contents); + } + +} + +static void +gdm_settings_desktop_backend_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + GdmSettingsDesktopBackend *self; + + self = GDM_SETTINGS_DESKTOP_BACKEND (object); + + switch (prop_id) { + case PROP_FILENAME: + _gdm_settings_desktop_backend_set_file_name (self, g_value_get_string (value)); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gdm_settings_desktop_backend_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + GdmSettingsDesktopBackend *self; + + self = GDM_SETTINGS_DESKTOP_BACKEND (object); + + switch (prop_id) { + case PROP_FILENAME: + g_value_set_string (value, self->filename); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static gboolean +parse_key_string (const char *keystring, + char **group, + char **key, + char **locale, + char **value) +{ + char **split1; + char **split2; + char *g; + char *k; + char *l; + char *v; + char *tmp1; + char *tmp2; + gboolean ret; + + g_return_val_if_fail (keystring != NULL, FALSE); + + ret = FALSE; + g = k = v = l = NULL; + split1 = split2 = NULL; + + if (group != NULL) { + *group = g; + } + if (key != NULL) { + *key = k; + } + if (locale != NULL) { + *locale = l; + } + if (value != NULL) { + *value = v; + } + + /*g_debug ("Attempting to parse key string: %s", keystring);*/ + + split1 = g_strsplit (keystring, "/", 2); + if (split1 == NULL + || split1 [0] == NULL + || split1 [1] == NULL + || split1 [0][0] == '\0' + || split1 [1][0] == '\0') { + g_warning ("GdmSettingsDesktopBackend: invalid key: %s", keystring); + goto out; + } + + g = split1 [0]; + + split2 = g_strsplit (split1 [1], "=", 2); + if (split2 == NULL) { + k = split1 [1]; + } else { + k = split2 [0]; + v = split2 [1]; + } + + /* trim off the locale */ + tmp1 = strchr (k, '['); + tmp2 = strchr (k, ']'); + if (tmp1 != NULL && tmp2 != NULL && tmp2 > tmp1) { + l = g_strndup (tmp1 + 1, tmp2 - tmp1 - 1); + *tmp1 = '\0'; + } + + ret = TRUE; + + if (group != NULL) { + *group = g_strdup (g); + } + if (key != NULL) { + *key = g_strdup (k); + } + if (locale != NULL) { + *locale = g_strdup (l); + } + if (value != NULL) { + *value = g_strdup (v); + } + out: + + g_strfreev (split1); + g_strfreev (split2); + + return ret; +} + +static gboolean +gdm_settings_desktop_backend_get_value (GdmSettingsBackend *backend, + const char *key, + char **value, + GError **error) +{ + GError *local_error; + char *val; + char *g; + char *k; + char *l; + gboolean ret; + + g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (backend), FALSE); + g_return_val_if_fail (key != NULL, FALSE); + + ret = FALSE; + + if (value != NULL) { + *value = NULL; + } + + val = g = k = l = NULL; + /*GDM_SETTINGS_BACKEND_CLASS (gdm_settings_desktop_backend_parent_class)->get_value (display);*/ + if (! parse_key_string (key, &g, &k, &l, NULL)) { + g_set_error (error, GDM_SETTINGS_BACKEND_ERROR, GDM_SETTINGS_BACKEND_ERROR_KEY_NOT_FOUND, "Key not found"); + goto out; + } + + /*g_debug ("Getting key: %s %s %s", g, k, l);*/ + local_error = NULL; + val = g_key_file_get_value (GDM_SETTINGS_DESKTOP_BACKEND (backend)->key_file, + g, + k, + &local_error); + if (local_error != NULL) { + g_error_free (local_error); + g_set_error (error, GDM_SETTINGS_BACKEND_ERROR, GDM_SETTINGS_BACKEND_ERROR_KEY_NOT_FOUND, "Key not found"); + goto out; + } + + if (value != NULL) { + *value = g_strdup (val); + } + ret = TRUE; + out: + g_free (val); + g_free (g); + g_free (k); + g_free (l); + + return ret; +} + +static void +save_settings (GdmSettingsDesktopBackend *backend) +{ + GError *local_error; + char *contents; + gsize length; + + if (! backend->dirty) { + return; + } + + g_debug ("Saving settings to %s", backend->filename); + + local_error = NULL; + contents = g_key_file_to_data (backend->key_file, &length, &local_error); + if (local_error != NULL) { + g_warning ("Unable to save settings: %s", local_error->message); + g_error_free (local_error); + return; + } + + local_error = NULL; + g_file_set_contents (backend->filename, + contents, + length, + &local_error); + if (local_error != NULL) { + g_warning ("Unable to save settings: %s", local_error->message); + g_error_free (local_error); + g_free (contents); + return; + } + + g_free (contents); + + backend->dirty = FALSE; +} + +static gboolean +save_settings_timer (GdmSettingsDesktopBackend *backend) +{ + save_settings (backend); + backend->save_id = 0; + return FALSE; +} + +static void +queue_save (GdmSettingsDesktopBackend *backend) +{ + if (! backend->dirty) { + return; + } + + if (backend->save_id != 0) { + /* already pending */ + return; + } + + backend->save_id = g_timeout_add_seconds (5, (GSourceFunc)save_settings_timer, backend); +} + +static gboolean +gdm_settings_desktop_backend_set_value (GdmSettingsBackend *backend, + const char *key, + const char *value, + GError **error) +{ + GError *local_error; + char *old_val; + char *g; + char *k; + char *l; + + g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (backend), FALSE); + g_return_val_if_fail (key != NULL, FALSE); + + /*GDM_SETTINGS_BACKEND_CLASS (gdm_settings_desktop_backend_parent_class)->get_value (display);*/ + if (! parse_key_string (key, &g, &k, &l, NULL)) { + g_set_error (error, GDM_SETTINGS_BACKEND_ERROR, GDM_SETTINGS_BACKEND_ERROR_KEY_NOT_FOUND, "Key not found"); + return FALSE; + } + + local_error = NULL; + old_val = g_key_file_get_value (GDM_SETTINGS_DESKTOP_BACKEND (backend)->key_file, + g, + k, + &local_error); + if (local_error != NULL) { + g_error_free (local_error); + } + + /*g_debug ("Setting key: %s %s %s", g, k, l);*/ + local_error = NULL; + g_key_file_set_value (GDM_SETTINGS_DESKTOP_BACKEND (backend)->key_file, + g, + k, + value); + + GDM_SETTINGS_DESKTOP_BACKEND (backend)->dirty = TRUE; + queue_save (GDM_SETTINGS_DESKTOP_BACKEND (backend)); + + gdm_settings_backend_value_changed (backend, key, old_val, value); + + g_free (old_val); + + return TRUE; +} + +static void +gdm_settings_desktop_backend_class_init (GdmSettingsDesktopBackendClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GdmSettingsBackendClass *backend_class = GDM_SETTINGS_BACKEND_CLASS (klass); + + object_class->get_property = gdm_settings_desktop_backend_get_property; + object_class->set_property = gdm_settings_desktop_backend_set_property; + object_class->finalize = gdm_settings_desktop_backend_finalize; + + backend_class->get_value = gdm_settings_desktop_backend_get_value; + backend_class->set_value = gdm_settings_desktop_backend_set_value; + + g_object_class_install_property (object_class, + PROP_FILENAME, + g_param_spec_string ("filename", + "File Name", + "The name of the configuration file", + NULL, + G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); +} + +static void +gdm_settings_desktop_backend_init (GdmSettingsDesktopBackend *backend) +{ +} + +static void +gdm_settings_desktop_backend_finalize (GObject *object) +{ + GdmSettingsDesktopBackend *backend; + + g_return_if_fail (object != NULL); + g_return_if_fail (GDM_IS_SETTINGS_DESKTOP_BACKEND (object)); + + backend = GDM_SETTINGS_DESKTOP_BACKEND (object); + + save_settings (backend); + g_key_file_free (backend->key_file); + g_free (backend->filename); + + G_OBJECT_CLASS (gdm_settings_desktop_backend_parent_class)->finalize (object); +} + +GdmSettingsBackend * +gdm_settings_desktop_backend_new (const char* filename) +{ + GObject *object; + + if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR)) + return NULL; + + object = g_object_new (GDM_TYPE_SETTINGS_DESKTOP_BACKEND, + "filename", filename, + NULL); + return GDM_SETTINGS_BACKEND (object); +} |