diff options
Diffstat (limited to 'tdm/backend/consolekit.c')
| -rw-r--r-- | tdm/backend/consolekit.c | 557 |
1 files changed, 557 insertions, 0 deletions
diff --git a/tdm/backend/consolekit.c b/tdm/backend/consolekit.c new file mode 100644 index 000000000..61d0b165e --- /dev/null +++ b/tdm/backend/consolekit.c @@ -0,0 +1,557 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- + + Copyright (C) 2006-2007 William Jon McCann <mccann@jhu.edu> + Copyright (C) 2007 Kevin Kofler <Kevin@tigcc.ticalc.org> + + 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 Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. + */ + +#include "dm.h" +#include "dm_auth.h" +#include "dm_error.h" + +#include <stdlib.h> +#include <string.h> +#include <pwd.h> + +#define DBUS_API_SUBJECT_TO_CHANGE +#include <dbus/dbus.h> + +#include "consolekit.h" + + +#define CK_NAME "org.freedesktop.ConsoleKit" +#define CK_PATH "/org/freedesktop/ConsoleKit" +#define CK_INTERFACE "org.freedesktop.ConsoleKit" +#define CK_MANAGER_PATH "/org/freedesktop/ConsoleKit/Manager" +#define CK_MANAGER_INTERFACE "org.freedesktop.ConsoleKit.Manager" +#define CK_SESSION_INTERFACE "org.freedesktop.ConsoleKit.Session" + +static DBusConnection *private_connection = NULL; + +static void +add_param_int (DBusMessageIter *iter_struct, + const char *key, + int value) +{ + DBusMessageIter iter_struct_entry; + DBusMessageIter iter_var; + + dbus_message_iter_open_container (iter_struct, + DBUS_TYPE_STRUCT, + NULL, + &iter_struct_entry); + + dbus_message_iter_append_basic (&iter_struct_entry, + DBUS_TYPE_STRING, + &key); + + dbus_message_iter_open_container (&iter_struct_entry, + DBUS_TYPE_VARIANT, + DBUS_TYPE_INT32_AS_STRING, + &iter_var); + + dbus_message_iter_append_basic (&iter_var, + DBUS_TYPE_INT32, + &value); + + dbus_message_iter_close_container (&iter_struct_entry, + &iter_var); + + dbus_message_iter_close_container (iter_struct, &iter_struct_entry); +} + +static void +add_param_boolean (DBusMessageIter *iter_struct, + const char *key, + int value) +{ + DBusMessageIter iter_struct_entry; + DBusMessageIter iter_var; + + dbus_message_iter_open_container (iter_struct, + DBUS_TYPE_STRUCT, + NULL, + &iter_struct_entry); + + dbus_message_iter_append_basic (&iter_struct_entry, + DBUS_TYPE_STRING, + &key); + + dbus_message_iter_open_container (&iter_struct_entry, + DBUS_TYPE_VARIANT, + DBUS_TYPE_BOOLEAN_AS_STRING, + &iter_var); + + dbus_message_iter_append_basic (&iter_var, + DBUS_TYPE_BOOLEAN, + &value); + + dbus_message_iter_close_container (&iter_struct_entry, + &iter_var); + + dbus_message_iter_close_container (iter_struct, &iter_struct_entry); +} + +static void +add_param_string (DBusMessageIter *iter_struct, + const char *key, + const char *value) +{ + DBusMessageIter iter_struct_entry; + DBusMessageIter iter_var; + + dbus_message_iter_open_container (iter_struct, + DBUS_TYPE_STRUCT, + NULL, + &iter_struct_entry); + + dbus_message_iter_append_basic (&iter_struct_entry, + DBUS_TYPE_STRING, + &key); + + dbus_message_iter_open_container (&iter_struct_entry, + DBUS_TYPE_VARIANT, + DBUS_TYPE_STRING_AS_STRING, + &iter_var); + + dbus_message_iter_append_basic (&iter_var, + DBUS_TYPE_STRING, + &value); + + dbus_message_iter_close_container (&iter_struct_entry, + &iter_var); + + dbus_message_iter_close_container (iter_struct, &iter_struct_entry); +} + +static int +session_get_x11_display (DBusConnection *connection, + const char *ssid, + char **str) +{ + DBusError error; + DBusMessage *message; + DBusMessage *reply; + DBusMessageIter iter; + const char *value; + + if (str != NULL) { + *str = NULL; + } + + message = dbus_message_new_method_call (CK_NAME, + ssid, + CK_SESSION_INTERFACE, + "GetX11Display"); + if (message == NULL) { + Debug ("ConsoleKit: Couldn't allocate the D-Bus message"); + return FALSE; + } + + dbus_error_init (&error); + reply = dbus_connection_send_with_reply_and_block (connection, + message, + -1, &error); + if (dbus_error_is_set (&error)) { + Debug ("ConsoleKit: %s raised:\n %s\n\n", error.name, error.message); + reply = NULL; + } + + dbus_connection_flush (connection); + dbus_message_unref (message); + + if (reply == NULL) { + return FALSE; + } + + dbus_message_iter_init (reply, &iter); + dbus_message_iter_get_basic (&iter, &value); + if (str != NULL) { + *str = strdup (value); + } + dbus_message_unref (reply); + + return TRUE; +} + +static int +session_unlock (DBusConnection *connection, + const char *ssid) +{ + DBusError error; + DBusMessage *message; + DBusMessage *reply; + + Debug ("ConsoleKit: Unlocking session %s", ssid); + message = dbus_message_new_method_call (CK_NAME, + ssid, + CK_SESSION_INTERFACE, + "Unlock"); + if (message == NULL) { + Debug ("ConsoleKit: Couldn't allocate the D-Bus message"); + return FALSE; + } + + dbus_error_init (&error); + reply = dbus_connection_send_with_reply_and_block (connection, + message, + -1, &error); + dbus_message_unref (message); + dbus_message_unref (reply); + dbus_connection_flush (connection); + + if (dbus_error_is_set (&error)) { + Debug ("ConsoleKit: %s raised:\n %s\n\n", error.name, error.message); + return FALSE; + } + + return TRUE; +} + +/* from libhal */ +static char ** +get_path_array_from_iter (DBusMessageIter *iter, + int *num_elements) +{ + int count; + char **buffer; + + count = 0; + buffer = (char **)malloc (sizeof (char *) * 8); + + if (buffer == NULL) + goto oom; + + buffer[0] = NULL; + while (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_OBJECT_PATH) { + const char *value; + char *str; + + if ((count % 8) == 0 && count != 0) { + buffer = realloc (buffer, sizeof (char *) * (count + 8)); + if (buffer == NULL) + goto oom; + } + + dbus_message_iter_get_basic (iter, &value); + str = strdup (value); + if (str == NULL) + goto oom; + + buffer[count] = str; + + dbus_message_iter_next (iter); + count++; + } + + if ((count % 8) == 0) { + buffer = realloc (buffer, sizeof (char *) * (count + 1)); + if (buffer == NULL) + goto oom; + } + + buffer[count] = NULL; + if (num_elements != NULL) + *num_elements = count; + return buffer; + +oom: + LogWarn ("%s %d : error allocating memory\n", __FILE__, __LINE__); + return NULL; + +} + +static char ** +get_sessions_for_user (DBusConnection *connection, + const char *user, + const char *x11_display) +{ + DBusError error; + DBusMessage *message; + DBusMessage *reply; + DBusMessageIter iter; + DBusMessageIter iter_reply; + DBusMessageIter iter_array; + struct passwd *pwent; + char **sessions; + + sessions = NULL; + message = NULL; + reply = NULL; + + pwent = getpwnam (user); + + dbus_error_init (&error); + message = dbus_message_new_method_call (CK_NAME, + CK_MANAGER_PATH, + CK_MANAGER_INTERFACE, + "GetSessionsForUser"); + if (message == NULL) { + Debug ("ConsoleKit: Couldn't allocate the D-Bus message"); + goto out; + } + + dbus_message_iter_init_append (message, &iter); + dbus_message_iter_append_basic (&iter, + DBUS_TYPE_UINT32, + &pwent->pw_uid); + + dbus_error_init (&error); + reply = dbus_connection_send_with_reply_and_block (connection, + message, + -1, &error); + dbus_connection_flush (connection); + + if (dbus_error_is_set (&error)) { + Debug ("ConsoleKit: %s raised:\n %s\n\n", error.name, error.message); + goto out; + } + + if (reply == NULL) { + Debug ("ConsoleKit: No reply for GetSessionsForUser"); + goto out; + } + + dbus_message_iter_init (reply, &iter_reply); + if (dbus_message_iter_get_arg_type (&iter_reply) != DBUS_TYPE_ARRAY) { + Debug ("ConsoleKit: Wrong reply for GetSessionsForUser - expecting an array."); + goto out; + } + + dbus_message_iter_recurse (&iter_reply, &iter_array); + sessions = get_path_array_from_iter (&iter_array, NULL); + + out: + if (message != NULL) { + dbus_message_unref (message); + } + if (reply != NULL) { + dbus_message_unref (reply); + } + + return sessions; +} + +void +unlock_ck_session (const char *user, + const char *x11_display) +{ + DBusError error; + DBusConnection *connection; + char **sessions; + int i; + + Debug ("ConsoleKit: Unlocking session for %s on %s", user, x11_display); + + dbus_error_init (&error); + connection = dbus_bus_get (DBUS_BUS_SYSTEM, &error); + if (connection == NULL) { + Debug ("ConsoleKit: Failed to connect to the D-Bus daemon: %s", error.message); + dbus_error_free (&error); + return; + } + + sessions = get_sessions_for_user (connection, user, x11_display); + if (sessions == NULL || sessions[0] == NULL) { + Debug ("ConsoleKit: no sessions found"); + return; + } + + for (i = 0; sessions[i] != NULL; i++) { + char *ssid; + char *xdisplay; + + ssid = sessions[i]; + session_get_x11_display (connection, ssid, &xdisplay); + Debug ("ConsoleKit: session %s has DISPLAY %s", ssid, xdisplay); + + if (xdisplay != NULL + && x11_display != NULL + && strcmp (xdisplay, x11_display) == 0) { + int res; + + res = session_unlock (connection, ssid); + if (! res) { + LogError ("ConsoleKit: Unable to unlock %s", ssid); + } + } + + free (xdisplay); + } + + freeStrArr (sessions); +} + +char * +open_ck_session (struct passwd *pwent, + struct display *d) +{ + DBusConnection *connection; + DBusError error; + DBusMessage *message; + DBusMessage *reply; + DBusMessageIter iter; + DBusMessageIter iter_struct; + char *cookie; + + cookie = NULL; + + if (pwent == NULL) { + Debug ("ConsoleKit: NULL user passed as parameter"); + return NULL; + } + + Debug ("ConsoleKit: Opening session for %s", pwent->pw_name); + + dbus_error_init (&error); + connection = dbus_bus_get_private (DBUS_BUS_SYSTEM, &error); + private_connection = connection; + + if (connection == NULL) { + Debug ("ConsoleKit: Failed to connect to the D-Bus daemon: %s", error.message); + dbus_error_free (&error); + return NULL; + } + + dbus_connection_set_exit_on_disconnect (connection, FALSE); + /* FIXME: What to do about these? + dbus_connection_set_watch_functions( connection, + dbusAddWatch, + dbusRemoveWatch, + dbusToggleWatch, + data, 0 ); + dbus_connection_set_timeout_functions( connection, + dbusAddTimeout, + dbusRemoveTimeout, + dbusToggleTimeout, + data, 0 ); + dbus_connection_set_wakeup_main_function( connection, + dbusWakeupMain, + data, 0 ); */ + + dbus_error_init (&error); + message = dbus_message_new_method_call (CK_NAME, + CK_MANAGER_PATH, + CK_MANAGER_INTERFACE, + "OpenSessionWithParameters"); + if (message == NULL) { + Debug ("ConsoleKit: Couldn't allocate the D-Bus message"); + return NULL; + } + + dbus_message_iter_init_append (message, &iter); + dbus_message_iter_open_container (&iter, + DBUS_TYPE_ARRAY, + DBUS_STRUCT_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING + DBUS_TYPE_VARIANT_AS_STRING + DBUS_STRUCT_END_CHAR_AS_STRING, + &iter_struct); + + add_param_int (&iter_struct, "user", pwent->pw_uid); + add_param_string (&iter_struct, "x11-display", d->name); + add_param_boolean (&iter_struct, "is-local", ((d->displayType & d_location) == dLocal)); +#ifdef XDMCP + if ((d->displayType & d_location) != dLocal) { + add_param_string (&iter_struct, "remote-host-name", d->remoteHost); + } +#endif + +#ifdef HAVE_VTS + if (d->serverVT > 0) { + char device[20]; + + /* FIXME: how does xorg construct this */ + sprintf(device, "/dev/tty%d", d->serverVT); + add_param_string (&iter_struct, "x11-display-device", device); + } +#endif + + dbus_message_iter_close_container (&iter, &iter_struct); + + reply = dbus_connection_send_with_reply_and_block (connection, + message, + -1, &error); + if (dbus_error_is_set (&error)) { + Debug ("ConsoleKit: %s raised:\n %s\n\n", error.name, error.message); + reply = NULL; + } + + dbus_connection_flush (connection); + + dbus_message_unref (message); + dbus_error_free (&error); + + if (reply != NULL) { + const char *value; + + dbus_message_iter_init (reply, &iter); + dbus_message_iter_get_basic (&iter, &value); + cookie = strdup (value); + dbus_message_unref (reply); + } + + return cookie; +} + +void +close_ck_session (const char *cookie) +{ + DBusError error; + DBusMessage *message; + DBusMessage *reply; + DBusMessageIter iter; + + if (cookie == NULL) { + return; + } + + if (private_connection == NULL) { + return; + } + + dbus_error_init (&error); + message = dbus_message_new_method_call (CK_NAME, + CK_MANAGER_PATH, + CK_MANAGER_INTERFACE, + "CloseSession"); + if (message == NULL) { + Debug ("ConsoleKit: Couldn't allocate the D-Bus message"); + return; + } + + dbus_message_iter_init_append (message, &iter); + dbus_message_iter_append_basic (&iter, + DBUS_TYPE_STRING, + &cookie); + + reply = dbus_connection_send_with_reply_and_block (private_connection, + message, + -1, &error); + if (dbus_error_is_set (&error)) { + Debug ("ConsoleKit: %s raised:\n %s\n\n", error.name, error.message); + reply = NULL; + } + + dbus_connection_flush (private_connection); + + dbus_message_unref (message); + dbus_error_free (&error); + + dbus_connection_close (private_connection); + private_connection = NULL; +} |