[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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| 2 | * |
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| 3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | * |
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| 19 | */ |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #include <stdlib.h> |
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| 24 | #include <stdio.h> |
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| 25 | #include <unistd.h> |
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| 26 | #include <string.h> |
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| 27 | |
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| 28 | #include <glib.h> |
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| 29 | #include <glib/gi18n.h> |
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| 30 | #include <glib-object.h> |
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| 31 | #define DBUS_API_SUBJECT_TO_CHANGE |
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| 32 | #include <dbus/dbus.h> |
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| 33 | #include <dbus/dbus-glib.h> |
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| 34 | #include <dbus/dbus-glib-lowlevel.h> |
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| 35 | |
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| 36 | #include "gdm-chooser-client.h" |
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| 37 | |
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| 38 | #define GDM_CHOOSER_CLIENT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_CHOOSER_CLIENT, GdmChooserClientPrivate)) |
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| 39 | |
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| 40 | #define CHOOSER_SERVER_DBUS_PATH "/org/gnome/DisplayManager/ChooserServer" |
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| 41 | #define CHOOSER_SERVER_DBUS_INTERFACE "org.gnome.DisplayManager.ChooserServer" |
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| 42 | |
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| 43 | #define GDM_DBUS_NAME "org.gnome.DisplayManager" |
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| 44 | #define GDM_DBUS_DISPLAY_INTERFACE "org.gnome.DisplayManager.Display" |
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| 45 | |
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| 46 | struct GdmChooserClientPrivate |
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| 47 | { |
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| 48 | DBusConnection *connection; |
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| 49 | char *address; |
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| 50 | }; |
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| 51 | |
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| 52 | enum { |
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| 53 | PROP_0, |
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| 54 | }; |
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| 55 | |
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| 56 | static void gdm_chooser_client_class_init (GdmChooserClientClass *klass); |
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| 57 | static void gdm_chooser_client_init (GdmChooserClient *chooser_client); |
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| 58 | static void gdm_chooser_client_finalize (GObject *object); |
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| 59 | |
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| 60 | G_DEFINE_TYPE (GdmChooserClient, gdm_chooser_client, G_TYPE_OBJECT) |
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| 61 | |
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| 62 | static gpointer client_object = NULL; |
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| 63 | |
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| 64 | GQuark |
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| 65 | gdm_chooser_client_error_quark (void) |
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| 66 | { |
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| 67 | static GQuark error_quark = 0; |
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| 68 | |
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| 69 | if (error_quark == 0) |
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| 70 | error_quark = g_quark_from_static_string ("gdm-chooser-client"); |
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| 71 | |
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| 72 | return error_quark; |
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| 73 | } |
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| 74 | |
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| 75 | static gboolean |
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| 76 | send_dbus_string_method (DBusConnection *connection, |
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| 77 | const char *method, |
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| 78 | const char *payload) |
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| 79 | { |
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| 80 | DBusError error; |
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| 81 | DBusMessage *message; |
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| 82 | DBusMessage *reply; |
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| 83 | DBusMessageIter iter; |
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| 84 | const char *str; |
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| 85 | |
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| 86 | if (payload != NULL) { |
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| 87 | str = payload; |
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| 88 | } else { |
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| 89 | str = ""; |
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| 90 | } |
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| 91 | |
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| 92 | g_debug ("GdmChooserClient: Calling %s", method); |
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| 93 | message = dbus_message_new_method_call (NULL, |
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| 94 | CHOOSER_SERVER_DBUS_PATH, |
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| 95 | CHOOSER_SERVER_DBUS_INTERFACE, |
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| 96 | method); |
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| 97 | if (message == NULL) { |
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| 98 | g_warning ("Couldn't allocate the D-Bus message"); |
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| 99 | return FALSE; |
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| 100 | } |
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| 101 | |
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| 102 | dbus_message_iter_init_append (message, &iter); |
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| 103 | dbus_message_iter_append_basic (&iter, |
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| 104 | DBUS_TYPE_STRING, |
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| 105 | &str); |
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| 106 | |
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| 107 | dbus_error_init (&error); |
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| 108 | reply = dbus_connection_send_with_reply_and_block (connection, |
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| 109 | message, |
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| 110 | -1, |
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| 111 | &error); |
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| 112 | |
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| 113 | dbus_message_unref (message); |
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| 114 | |
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| 115 | if (dbus_error_is_set (&error)) { |
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| 116 | g_warning ("%s %s raised: %s\n", |
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| 117 | method, |
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| 118 | error.name, |
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| 119 | error.message); |
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| 120 | return FALSE; |
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| 121 | } |
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| 122 | if (reply != NULL) { |
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| 123 | dbus_message_unref (reply); |
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| 124 | } |
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| 125 | dbus_connection_flush (connection); |
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| 126 | |
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| 127 | return TRUE; |
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| 128 | } |
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| 129 | |
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| 130 | |
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| 131 | static gboolean |
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| 132 | send_dbus_void_method (DBusConnection *connection, |
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| 133 | const char *method) |
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| 134 | { |
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| 135 | DBusError error; |
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| 136 | DBusMessage *message; |
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| 137 | DBusMessage *reply; |
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| 138 | |
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| 139 | g_debug ("GdmChooserClient: Calling %s", method); |
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| 140 | message = dbus_message_new_method_call (NULL, |
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| 141 | CHOOSER_SERVER_DBUS_PATH, |
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| 142 | CHOOSER_SERVER_DBUS_INTERFACE, |
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| 143 | method); |
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| 144 | if (message == NULL) { |
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| 145 | g_warning ("Couldn't allocate the D-Bus message"); |
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| 146 | return FALSE; |
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| 147 | } |
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| 148 | |
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| 149 | dbus_error_init (&error); |
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| 150 | reply = dbus_connection_send_with_reply_and_block (connection, |
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| 151 | message, |
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| 152 | -1, |
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| 153 | &error); |
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| 154 | |
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| 155 | dbus_message_unref (message); |
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| 156 | |
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| 157 | if (dbus_error_is_set (&error)) { |
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| 158 | g_warning ("%s %s raised: %s\n", |
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| 159 | method, |
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| 160 | error.name, |
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| 161 | error.message); |
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| 162 | return FALSE; |
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| 163 | } |
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| 164 | if (reply != NULL) { |
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| 165 | dbus_message_unref (reply); |
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| 166 | } |
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| 167 | dbus_connection_flush (connection); |
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| 168 | |
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| 169 | return TRUE; |
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| 170 | } |
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| 171 | |
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| 172 | void |
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| 173 | gdm_chooser_client_call_select_hostname (GdmChooserClient *client, |
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| 174 | const char *text) |
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| 175 | { |
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| 176 | send_dbus_string_method (client->priv->connection, |
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| 177 | "SelectHostname", |
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| 178 | text); |
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| 179 | } |
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| 180 | |
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| 181 | void |
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| 182 | gdm_chooser_client_call_disconnect (GdmChooserClient *client) |
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| 183 | { |
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| 184 | send_dbus_void_method (client->priv->connection, |
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| 185 | "Disconnect"); |
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| 186 | } |
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| 187 | |
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| 188 | static DBusHandlerResult |
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| 189 | client_dbus_handle_message (DBusConnection *connection, |
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| 190 | DBusMessage *message, |
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| 191 | void *user_data, |
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| 192 | dbus_bool_t local_interface) |
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| 193 | { |
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| 194 | |
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| 195 | #if 0 |
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| 196 | g_message ("obj_path=%s interface=%s method=%s destination=%s", |
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| 197 | dbus_message_get_path (message), |
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| 198 | dbus_message_get_interface (message), |
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| 199 | dbus_message_get_member (message), |
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| 200 | dbus_message_get_destination (message)); |
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| 201 | #endif |
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| 202 | |
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| 203 | g_return_val_if_fail (connection != NULL, DBUS_HANDLER_RESULT_NOT_YET_HANDLED); |
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| 204 | g_return_val_if_fail (message != NULL, DBUS_HANDLER_RESULT_NOT_YET_HANDLED); |
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| 205 | |
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| 206 | |
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| 207 | return DBUS_HANDLER_RESULT_HANDLED; |
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| 208 | } |
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| 209 | |
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| 210 | static DBusHandlerResult |
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| 211 | client_dbus_filter_function (DBusConnection *connection, |
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| 212 | DBusMessage *message, |
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| 213 | void *user_data) |
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| 214 | { |
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| 215 | GdmChooserClient *client = GDM_CHOOSER_CLIENT (user_data); |
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| 216 | const char *path; |
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| 217 | |
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| 218 | path = dbus_message_get_path (message); |
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| 219 | |
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| 220 | g_debug ("GdmChooserClient: obj_path=%s interface=%s method=%s", |
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| 221 | dbus_message_get_path (message), |
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| 222 | dbus_message_get_interface (message), |
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| 223 | dbus_message_get_member (message)); |
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| 224 | |
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| 225 | if (dbus_message_is_signal (message, DBUS_INTERFACE_LOCAL, "Disconnected") |
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| 226 | && strcmp (path, DBUS_PATH_LOCAL) == 0) { |
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| 227 | |
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| 228 | g_message ("Got disconnected from the session message bus"); |
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| 229 | |
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| 230 | dbus_connection_unref (connection); |
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| 231 | client->priv->connection = NULL; |
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| 232 | |
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| 233 | } else if (dbus_message_is_signal (message, |
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| 234 | DBUS_INTERFACE_DBUS, |
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| 235 | "NameOwnerChanged")) { |
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| 236 | g_debug ("GdmChooserClient: Name owner changed?"); |
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| 237 | } else { |
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| 238 | return client_dbus_handle_message (connection, message, user_data, FALSE); |
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| 239 | } |
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| 240 | |
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| 241 | return DBUS_HANDLER_RESULT_HANDLED; |
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| 242 | } |
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| 243 | |
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| 244 | gboolean |
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| 245 | gdm_chooser_client_start (GdmChooserClient *client, |
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| 246 | GError **error) |
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| 247 | { |
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| 248 | gboolean ret; |
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| 249 | DBusError local_error; |
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| 250 | |
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| 251 | g_return_val_if_fail (GDM_IS_CHOOSER_CLIENT (client), FALSE); |
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| 252 | |
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| 253 | ret = FALSE; |
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| 254 | |
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| 255 | if (client->priv->address == NULL) { |
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| 256 | g_warning ("GDM_CHOOSER_DBUS_ADDRESS not set"); |
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| 257 | g_set_error (error, |
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| 258 | GDM_CHOOSER_CLIENT_ERROR, |
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| 259 | GDM_CHOOSER_CLIENT_ERROR_GENERIC, |
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| 260 | "GDM_CHOOSER_DBUS_ADDRESS not set"); |
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| 261 | goto out; |
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| 262 | } |
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| 263 | |
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| 264 | g_debug ("GdmChooserClient: connecting to address: %s", client->priv->address); |
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| 265 | |
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| 266 | dbus_error_init (&local_error); |
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| 267 | client->priv->connection = dbus_connection_open (client->priv->address, &local_error); |
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| 268 | if (client->priv->connection == NULL) { |
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| 269 | if (dbus_error_is_set (&local_error)) { |
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| 270 | g_warning ("error opening connection: %s", local_error.message); |
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| 271 | g_set_error (error, |
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| 272 | GDM_CHOOSER_CLIENT_ERROR, |
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| 273 | GDM_CHOOSER_CLIENT_ERROR_GENERIC, |
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| 274 | "%s", local_error.message); |
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| 275 | dbus_error_free (&local_error); |
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| 276 | } else { |
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| 277 | g_warning ("Unable to open connection"); |
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| 278 | } |
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| 279 | goto out; |
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| 280 | } |
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| 281 | |
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| 282 | dbus_connection_setup_with_g_main (client->priv->connection, NULL); |
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| 283 | dbus_connection_set_exit_on_disconnect (client->priv->connection, TRUE); |
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| 284 | |
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| 285 | dbus_connection_add_filter (client->priv->connection, |
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| 286 | client_dbus_filter_function, |
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| 287 | client, |
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| 288 | NULL); |
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| 289 | |
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| 290 | ret = TRUE; |
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| 291 | |
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| 292 | out: |
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| 293 | return ret; |
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| 294 | } |
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| 295 | |
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| 296 | void |
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| 297 | gdm_chooser_client_stop (GdmChooserClient *client) |
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| 298 | { |
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| 299 | g_return_if_fail (GDM_IS_CHOOSER_CLIENT (client)); |
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| 300 | |
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| 301 | } |
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| 302 | |
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| 303 | static void |
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| 304 | gdm_chooser_client_set_property (GObject *object, |
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| 305 | guint prop_id, |
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| 306 | const GValue *value, |
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| 307 | GParamSpec *pspec) |
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| 308 | { |
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| 309 | switch (prop_id) { |
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| 310 | default: |
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| 311 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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| 312 | break; |
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| 313 | } |
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| 314 | } |
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| 315 | |
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| 316 | static void |
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| 317 | gdm_chooser_client_get_property (GObject *object, |
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| 318 | guint prop_id, |
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| 319 | GValue *value, |
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| 320 | GParamSpec *pspec) |
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| 321 | { |
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| 322 | switch (prop_id) { |
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| 323 | default: |
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| 324 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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| 325 | break; |
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| 326 | } |
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| 327 | } |
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| 328 | |
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| 329 | static GObject * |
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| 330 | gdm_chooser_client_constructor (GType type, |
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| 331 | guint n_construct_properties, |
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| 332 | GObjectConstructParam *construct_properties) |
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| 333 | { |
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| 334 | GdmChooserClient *chooser_client; |
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| 335 | |
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| 336 | chooser_client = GDM_CHOOSER_CLIENT (G_OBJECT_CLASS (gdm_chooser_client_parent_class)->constructor (type, |
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| 337 | n_construct_properties, |
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| 338 | construct_properties)); |
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| 339 | |
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| 340 | return G_OBJECT (chooser_client); |
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| 341 | } |
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| 342 | |
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| 343 | static void |
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| 344 | gdm_chooser_client_dispose (GObject *object) |
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| 345 | { |
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| 346 | g_debug ("GdmChooserClient: Disposing chooser_client"); |
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| 347 | |
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| 348 | G_OBJECT_CLASS (gdm_chooser_client_parent_class)->dispose (object); |
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| 349 | } |
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| 350 | |
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| 351 | static void |
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| 352 | gdm_chooser_client_class_init (GdmChooserClientClass *klass) |
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| 353 | { |
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| 354 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
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| 355 | |
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| 356 | object_class->get_property = gdm_chooser_client_get_property; |
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| 357 | object_class->set_property = gdm_chooser_client_set_property; |
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| 358 | object_class->constructor = gdm_chooser_client_constructor; |
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| 359 | object_class->dispose = gdm_chooser_client_dispose; |
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| 360 | object_class->finalize = gdm_chooser_client_finalize; |
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| 361 | |
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| 362 | g_type_class_add_private (klass, sizeof (GdmChooserClientPrivate)); |
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| 363 | } |
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| 364 | |
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| 365 | static void |
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| 366 | gdm_chooser_client_init (GdmChooserClient *client) |
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| 367 | { |
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| 368 | |
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| 369 | client->priv = GDM_CHOOSER_CLIENT_GET_PRIVATE (client); |
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| 370 | |
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| 371 | client->priv->address = g_strdup (g_getenv ("GDM_CHOOSER_DBUS_ADDRESS")); |
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| 372 | } |
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| 373 | |
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| 374 | static void |
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| 375 | gdm_chooser_client_finalize (GObject *object) |
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| 376 | { |
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| 377 | GdmChooserClient *client; |
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| 378 | |
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| 379 | g_return_if_fail (object != NULL); |
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| 380 | g_return_if_fail (GDM_IS_CHOOSER_CLIENT (object)); |
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| 381 | |
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| 382 | client = GDM_CHOOSER_CLIENT (object); |
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| 383 | |
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| 384 | g_return_if_fail (client->priv != NULL); |
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| 385 | |
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| 386 | g_free (client->priv->address); |
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| 387 | |
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| 388 | G_OBJECT_CLASS (gdm_chooser_client_parent_class)->finalize (object); |
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| 389 | } |
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| 390 | |
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| 391 | GdmChooserClient * |
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| 392 | gdm_chooser_client_new (void) |
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| 393 | { |
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| 394 | if (client_object != NULL) { |
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| 395 | g_object_ref (client_object); |
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| 396 | } else { |
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| 397 | client_object = g_object_new (GDM_TYPE_CHOOSER_CLIENT, NULL); |
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| 398 | g_object_add_weak_pointer (client_object, |
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| 399 | (gpointer *) &client_object); |
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| 400 | } |
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| 401 | |
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| 402 | return GDM_CHOOSER_CLIENT (client_object); |
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| 403 | } |
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