2 * Copyright (C) 2010-2011 Robert Ancell.
3 * Author: Robert Ancell <robert.ancell@canonical.com>
5 * This program is free software: you can redistribute it and/or modify it under
6 * the terms of the GNU General Public License as published by the Free Software
7 * Foundation, either version 3 of the License, or (at your option) any later
8 * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
21 #include "ldm-marshal.h"
22 #include "configuration.h"
30 static guint signals[LAST_SIGNAL] = { 0 };
34 /* PAM service to authenticate with */
36 gchar *autologin_pam_service;
38 /* Buffer for data read from greeter */
41 gboolean use_secure_memory;
43 /* Hints for the greeter */
46 /* Default session to use */
47 gchar *default_session;
49 /* Sequence number of current PAM session */
50 guint32 authentication_sequence_number;
52 /* Remote session name */
53 gchar *remote_session;
55 /* PAM session being constructed by the greeter */
56 Session *authentication_session;
58 /* TRUE if can log into guest accounts */
61 /* TRUE if logging into guest session */
62 gboolean guest_account_authenticated;
64 /* Communication channels to communicate with */
65 GIOChannel *to_greeter_channel;
66 GIOChannel *from_greeter_channel;
69 G_DEFINE_TYPE (Greeter, greeter, SESSION_TYPE);
71 /* Messages from the greeter to the server */
74 GREETER_MESSAGE_CONNECT = 0,
75 GREETER_MESSAGE_AUTHENTICATE,
76 GREETER_MESSAGE_AUTHENTICATE_AS_GUEST,
77 GREETER_MESSAGE_CONTINUE_AUTHENTICATION,
78 GREETER_MESSAGE_START_SESSION,
79 GREETER_MESSAGE_CANCEL_AUTHENTICATION,
80 GREETER_MESSAGE_SET_LANGUAGE,
81 GREETER_MESSAGE_AUTHENTICATE_REMOTE
84 /* Messages from the server to the greeter */
87 SERVER_MESSAGE_CONNECTED = 0,
88 SERVER_MESSAGE_PROMPT_AUTHENTICATION,
89 SERVER_MESSAGE_END_AUTHENTICATION,
90 SERVER_MESSAGE_SESSION_RESULT
93 static gboolean read_cb (GIOChannel *source, GIOCondition condition, gpointer data);
96 greeter_set_pam_services (Greeter *greeter, const gchar *pam_service, const gchar *autologin_pam_service)
98 g_free (greeter->priv->pam_service);
99 greeter->priv->pam_service = g_strdup (pam_service);
100 g_free (greeter->priv->autologin_pam_service);
101 greeter->priv->autologin_pam_service = g_strdup (autologin_pam_service);
105 greeter_set_allow_guest (Greeter *greeter, gboolean allow_guest)
107 greeter->priv->allow_guest = allow_guest;
111 greeter_set_hint (Greeter *greeter, const gchar *name, const gchar *value)
113 g_hash_table_insert (greeter->priv->hints, g_strdup (name), g_strdup (value));
117 secure_malloc (Greeter *greeter, size_t n)
119 if (greeter->priv->use_secure_memory)
120 return gcry_malloc_secure (n);
126 secure_realloc (Greeter *greeter, void *ptr, size_t n)
128 if (greeter->priv->use_secure_memory)
129 return gcry_realloc (ptr, n);
131 return g_realloc (ptr, n);
135 secure_free (Greeter *greeter, void *ptr)
137 if (greeter->priv->use_secure_memory)
138 return gcry_free (ptr);
149 #define HEADER_SIZE (sizeof (guint32) * 2)
150 #define MAX_MESSAGE_LENGTH 1024
153 write_message (Greeter *greeter, guint8 *message, gsize message_length)
155 GError *error = NULL;
157 g_io_channel_write_chars (greeter->priv->to_greeter_channel, (gchar *) message, message_length, NULL, &error);
159 g_warning ("Error writing to greeter: %s", error->message);
160 g_clear_error (&error);
161 g_io_channel_flush (greeter->priv->to_greeter_channel, NULL);
165 write_int (guint8 *buffer, gint buffer_length, guint32 value, gsize *offset)
167 if (*offset + 4 >= buffer_length)
169 buffer[*offset] = value >> 24;
170 buffer[*offset+1] = (value >> 16) & 0xFF;
171 buffer[*offset+2] = (value >> 8) & 0xFF;
172 buffer[*offset+3] = value & 0xFF;
177 write_string (guint8 *buffer, gint buffer_length, const gchar *value, gsize *offset)
182 length = strlen (value);
185 write_int (buffer, buffer_length, length, offset);
186 if (*offset + length >= buffer_length)
190 memcpy (buffer + *offset, value, length);
196 write_header (guint8 *buffer, gint buffer_length, guint32 id, guint32 length, gsize *offset)
198 write_int (buffer, buffer_length, id, offset);
199 write_int (buffer, buffer_length, length, offset);
203 string_length (const gchar *value)
206 return int_length ();
208 return int_length () + strlen (value);
212 handle_connect (Greeter *greeter, const gchar *version)
214 guint8 message[MAX_MESSAGE_LENGTH];
220 g_debug ("Greeter connected version=%s", version);
222 length = string_length (VERSION);
223 g_hash_table_iter_init (&iter, greeter->priv->hints);
224 while (g_hash_table_iter_next (&iter, &key, &value))
225 length += string_length (key) + string_length (value);
227 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_CONNECTED, length, &offset);
228 write_string (message, MAX_MESSAGE_LENGTH, VERSION, &offset);
229 g_hash_table_iter_init (&iter, greeter->priv->hints);
230 while (g_hash_table_iter_next (&iter, &key, &value))
232 write_string (message, MAX_MESSAGE_LENGTH, key, &offset);
233 write_string (message, MAX_MESSAGE_LENGTH, value, &offset);
235 write_message (greeter, message, offset);
237 g_signal_emit (greeter, signals[CONNECTED], 0);
241 pam_messages_cb (Session *session, Greeter *greeter)
245 guint8 message[MAX_MESSAGE_LENGTH];
246 const struct pam_message *messages;
251 messages = session_get_messages (session);
252 messages_length = session_get_messages_length (session);
254 /* Respond to d-bus query with messages */
255 g_debug ("Prompt greeter with %d message(s)", messages_length);
256 size = int_length () + string_length (session_get_username (session)) + int_length ();
257 for (i = 0; i < messages_length; i++)
258 size += int_length () + string_length (messages[i].msg);
260 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_PROMPT_AUTHENTICATION, size, &offset);
261 write_int (message, MAX_MESSAGE_LENGTH, greeter->priv->authentication_sequence_number, &offset);
262 write_string (message, MAX_MESSAGE_LENGTH, session_get_username (session), &offset);
263 write_int (message, MAX_MESSAGE_LENGTH, messages_length, &offset);
264 for (i = 0; i < messages_length; i++)
266 write_int (message, MAX_MESSAGE_LENGTH, messages[i].msg_style, &offset);
267 write_string (message, MAX_MESSAGE_LENGTH, messages[i].msg, &offset);
269 if (messages[i].msg_style == PAM_PROMPT_ECHO_OFF || messages[i].msg_style == PAM_PROMPT_ECHO_ON)
272 write_message (greeter, message, offset);
274 /* Continue immediately if nothing to respond with */
275 // FIXME: Should probably give the greeter a chance to ack the message
278 struct pam_response *response;
279 response = calloc (messages_length, sizeof (struct pam_response));
280 session_respond (greeter->priv->authentication_session, response);
286 send_end_authentication (Greeter *greeter, guint32 sequence_number, const gchar *username, int result)
288 guint8 message[MAX_MESSAGE_LENGTH];
291 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_END_AUTHENTICATION, int_length () + string_length (username) + int_length (), &offset);
292 write_int (message, MAX_MESSAGE_LENGTH, sequence_number, &offset);
293 write_string (message, MAX_MESSAGE_LENGTH, username, &offset);
294 write_int (message, MAX_MESSAGE_LENGTH, result, &offset);
295 write_message (greeter, message, offset);
299 authentication_complete_cb (Session *session, Greeter *greeter)
303 g_debug ("Authenticate result for user %s: %s", session_get_username (session), session_get_authentication_result_string (session));
305 result = session_get_authentication_result (session);
306 if (session_get_is_authenticated (session))
308 if (session_get_user (session))
309 g_debug ("User %s authorized", session_get_username (session));
312 g_debug ("User %s authorized, but no account of that name exists", session_get_username (session));
313 result = PAM_USER_UNKNOWN;
317 send_end_authentication (greeter, greeter->priv->authentication_sequence_number, session_get_username (session), result);
321 reset_session (Greeter *greeter)
323 g_free (greeter->priv->remote_session);
324 greeter->priv->remote_session = NULL;
325 if (greeter->priv->authentication_session)
327 g_signal_handlers_disconnect_matched (greeter->priv->authentication_session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, greeter);
328 session_stop (greeter->priv->authentication_session);
329 g_object_unref (greeter->priv->authentication_session);
330 greeter->priv->authentication_session = NULL;
333 greeter->priv->guest_account_authenticated = FALSE;
337 handle_login (Greeter *greeter, guint32 sequence_number, const gchar *username)
339 const gchar *autologin_username, *service;
340 gboolean is_interactive;
342 if (username[0] == '\0')
344 g_debug ("Greeter start authentication");
348 g_debug ("Greeter start authentication for %s", username);
350 reset_session (greeter);
352 greeter->priv->authentication_sequence_number = sequence_number;
353 g_signal_emit (greeter, signals[CREATE_SESSION], 0, &greeter->priv->authentication_session);
354 if (!greeter->priv->authentication_session)
356 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
360 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "got-messages", G_CALLBACK (pam_messages_cb), greeter);
361 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "authentication-complete", G_CALLBACK (authentication_complete_cb), greeter);
363 /* Use non-interactive service for autologin user */
364 autologin_username = g_hash_table_lookup (greeter->priv->hints, "autologin-user");
365 if (autologin_username != NULL && g_strcmp0 (username, autologin_username) == 0)
367 service = greeter->priv->autologin_pam_service;
368 is_interactive = FALSE;
372 service = greeter->priv->pam_service;
373 is_interactive = TRUE;
376 /* Run the session process */
377 session_set_pam_service (greeter->priv->authentication_session, service);
378 session_set_username (greeter->priv->authentication_session, username);
379 session_set_do_authenticate (greeter->priv->authentication_session, TRUE);
380 session_set_is_interactive (greeter->priv->authentication_session, is_interactive);
381 session_start (greeter->priv->authentication_session);
385 handle_login_as_guest (Greeter *greeter, guint32 sequence_number)
387 g_debug ("Greeter start authentication for guest account");
389 reset_session (greeter);
391 if (!greeter->priv->allow_guest)
393 g_debug ("Guest account is disabled");
394 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
398 greeter->priv->guest_account_authenticated = TRUE;
399 send_end_authentication (greeter, sequence_number, "", PAM_SUCCESS);
403 get_remote_session_service (const gchar *session_name)
405 GKeyFile *session_desktop_file;
408 gchar *remote_sessions_dir, *filename, *path, *service = NULL;
409 GError *error = NULL;
411 /* Validate session name doesn't contain directory separators */
412 for (c = session_name; *c; c++)
418 /* Load the session file */
419 session_desktop_file = g_key_file_new ();
420 filename = g_strdup_printf ("%s.desktop", session_name);
421 remote_sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
422 path = g_build_filename (remote_sessions_dir, filename, NULL);
423 g_free (remote_sessions_dir);
425 result = g_key_file_load_from_file (session_desktop_file, path, G_KEY_FILE_NONE, &error);
427 g_debug ("Failed to load session file %s: %s", path, error->message);
429 g_clear_error (&error);
431 service = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, "X-LightDM-PAM-Service", NULL);
432 g_key_file_free (session_desktop_file);
438 handle_login_remote (Greeter *greeter, const gchar *session_name, const gchar *username, guint32 sequence_number)
442 if (username[0] == '\0')
444 g_debug ("Greeter start authentication for remote session %s", session_name);
448 g_debug ("Greeter start authentication for remote session %s as user %s", session_name, username);
450 reset_session (greeter);
452 service = get_remote_session_service (session_name);
455 send_end_authentication (greeter, sequence_number, "", PAM_SYSTEM_ERR);
459 greeter->priv->authentication_sequence_number = sequence_number;
460 greeter->priv->remote_session = g_strdup (session_name);
461 g_signal_emit (greeter, signals[CREATE_SESSION], 0, &greeter->priv->authentication_session);
462 if (greeter->priv->authentication_session)
464 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "got-messages", G_CALLBACK (pam_messages_cb), greeter);
465 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "authentication-complete", G_CALLBACK (authentication_complete_cb), greeter);
467 /* Run the session process */
468 session_set_pam_service (greeter->priv->authentication_session, service);
469 session_set_username (greeter->priv->authentication_session, username);
470 session_set_do_authenticate (greeter->priv->authentication_session, TRUE);
471 session_set_is_interactive (greeter->priv->authentication_session, TRUE);
472 session_set_is_guest (greeter->priv->authentication_session, TRUE);
473 session_start (greeter->priv->authentication_session);
478 if (!greeter->priv->authentication_session)
480 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
486 handle_continue_authentication (Greeter *greeter, gchar **secrets)
489 const struct pam_message *messages;
490 struct pam_response *response;
491 int i, j, n_prompts = 0;
493 /* Not in authentication */
494 if (greeter->priv->authentication_session == NULL)
497 messages_length = session_get_messages_length (greeter->priv->authentication_session);
498 messages = session_get_messages (greeter->priv->authentication_session);
500 /* Check correct number of responses */
501 for (i = 0; i < messages_length; i++)
503 int msg_style = messages[i].msg_style;
504 if (msg_style == PAM_PROMPT_ECHO_OFF || msg_style == PAM_PROMPT_ECHO_ON)
507 if (g_strv_length (secrets) != n_prompts)
509 session_respond_error (greeter->priv->authentication_session, PAM_CONV_ERR);
513 g_debug ("Continue authentication");
516 response = calloc (messages_length, sizeof (struct pam_response));
517 for (i = 0, j = 0; i < messages_length; i++)
519 int msg_style = messages[i].msg_style;
520 if (msg_style == PAM_PROMPT_ECHO_OFF || msg_style == PAM_PROMPT_ECHO_ON)
522 size_t secret_length = strlen (secrets[j]) + 1;
523 response[i].resp = secure_malloc (greeter, secret_length);
524 memcpy (response[i].resp, secrets[j], secret_length); // FIXME: Need to convert from UTF-8
529 session_respond (greeter->priv->authentication_session, response);
531 for (i = 0; i < messages_length; i++)
532 secure_free (greeter, response[i].resp);
537 handle_cancel_authentication (Greeter *greeter)
539 /* Not in authentication */
540 if (greeter->priv->authentication_session == NULL)
543 g_debug ("Cancel authentication");
544 reset_session (greeter);
548 handle_start_session (Greeter *greeter, const gchar *session)
551 guint8 message[MAX_MESSAGE_LENGTH];
553 SessionType session_type = SESSION_TYPE_LOCAL;
555 if (strcmp (session, "") == 0)
558 /* Use session type chosen in remote session */
559 if (greeter->priv->remote_session)
561 session_type = SESSION_TYPE_REMOTE;
562 session = greeter->priv->remote_session;
565 if (greeter->priv->guest_account_authenticated || session_get_is_authenticated (greeter->priv->authentication_session))
568 g_debug ("Greeter requests session %s", session);
570 g_debug ("Greeter requests default session");
571 g_signal_emit (greeter, signals[START_SESSION], 0, session_type, session, &result);
575 g_debug ("Ignoring start session request, user is not authorized");
579 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_SESSION_RESULT, int_length (), &offset);
580 write_int (message, MAX_MESSAGE_LENGTH, result ? 0 : 1, &offset);
581 write_message (greeter, message, offset);
585 handle_set_language (Greeter *greeter, const gchar *language)
589 if (!greeter->priv->guest_account_authenticated && !session_get_is_authenticated (greeter->priv->authentication_session))
591 g_debug ("Ignoring set language request, user is not authorized");
595 // FIXME: Could use this
596 if (greeter->priv->guest_account_authenticated)
598 g_debug ("Ignoring set language request for guest user");
602 g_debug ("Greeter sets language %s", language);
603 user = session_get_user (greeter->priv->authentication_session);
604 user_set_language (user, language);
608 read_int (Greeter *greeter, gsize *offset)
612 if (greeter->priv->n_read - *offset < sizeof (guint32))
614 g_warning ("Not enough space for int, need %zu, got %zu", sizeof (guint32), greeter->priv->n_read - *offset);
617 buffer = greeter->priv->read_buffer + *offset;
618 value = buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3];
619 *offset += int_length ();
624 get_message_length (Greeter *greeter)
629 offset = int_length ();
630 payload_length = read_int (greeter, &offset);
632 if (HEADER_SIZE + payload_length < HEADER_SIZE)
634 g_warning ("Payload length of %u octets too long", payload_length);
638 return HEADER_SIZE + payload_length;
642 read_string_full (Greeter *greeter, gsize *offset, void* (*alloc_fn)(size_t n))
647 length = read_int (greeter, offset);
648 if (greeter->priv->n_read - *offset < length)
650 g_warning ("Not enough space for string, need %u, got %zu", length, greeter->priv->n_read - *offset);
651 return g_strdup ("");
654 value = (*alloc_fn) (sizeof (gchar *) * (length + 1));
655 memcpy (value, greeter->priv->read_buffer + *offset, length);
656 value[length] = '\0';
663 read_string (Greeter *greeter, gsize *offset)
665 return read_string_full (greeter, offset, g_malloc);
669 read_secret (Greeter *greeter, gsize *offset)
671 if (greeter->priv->use_secure_memory)
672 return read_string_full (greeter, offset, gcry_malloc_secure);
674 return read_string_full (greeter, offset, g_malloc);
678 read_cb (GIOChannel *source, GIOCondition condition, gpointer data)
680 Greeter *greeter = data;
681 gsize n_to_read, n_read, offset;
684 guint32 sequence_number, n_secrets, max_secrets;
685 gchar *version, *username, *session_name, *language;
687 GError *error = NULL;
689 if (condition == G_IO_HUP)
691 g_debug ("Greeter closed communication channel");
695 n_to_read = HEADER_SIZE;
696 if (greeter->priv->n_read >= HEADER_SIZE)
698 n_to_read = get_message_length (greeter);
699 if (n_to_read <= HEADER_SIZE)
703 status = g_io_channel_read_chars (greeter->priv->from_greeter_channel,
704 (gchar *) greeter->priv->read_buffer + greeter->priv->n_read,
705 n_to_read - greeter->priv->n_read,
709 g_warning ("Error reading from greeter: %s", error->message);
710 g_clear_error (&error);
711 if (status != G_IO_STATUS_NORMAL)
714 greeter->priv->n_read += n_read;
715 if (greeter->priv->n_read != n_to_read)
718 /* If have header, rerun for content */
719 if (greeter->priv->n_read == HEADER_SIZE)
721 n_to_read = get_message_length (greeter);
722 if (n_to_read > HEADER_SIZE)
724 greeter->priv->read_buffer = secure_realloc (greeter, greeter->priv->read_buffer, n_to_read);
725 read_cb (source, condition, greeter);
731 id = read_int (greeter, &offset);
732 read_int (greeter, &offset);
735 case GREETER_MESSAGE_CONNECT:
736 version = read_string (greeter, &offset);
737 handle_connect (greeter, version);
740 case GREETER_MESSAGE_AUTHENTICATE:
741 sequence_number = read_int (greeter, &offset);
742 username = read_string (greeter, &offset);
743 handle_login (greeter, sequence_number, username);
746 case GREETER_MESSAGE_AUTHENTICATE_AS_GUEST:
747 sequence_number = read_int (greeter, &offset);
748 handle_login_as_guest (greeter, sequence_number);
750 case GREETER_MESSAGE_AUTHENTICATE_REMOTE:
751 sequence_number = read_int (greeter, &offset);
752 session_name = read_string (greeter, &offset);
753 username = read_string (greeter, &offset);
754 handle_login_remote (greeter, session_name, username, sequence_number);
756 case GREETER_MESSAGE_CONTINUE_AUTHENTICATION:
757 n_secrets = read_int (greeter, &offset);
758 max_secrets = (G_MAXUINT32 - 1) / sizeof (gchar *);
759 if (n_secrets > max_secrets)
761 g_warning ("Array length of %u elements too long", n_secrets);
764 secrets = g_malloc (sizeof (gchar *) * (n_secrets + 1));
765 for (i = 0; i < n_secrets; i++)
766 secrets[i] = read_secret (greeter, &offset);
768 handle_continue_authentication (greeter, secrets);
769 for (i = 0; i < n_secrets; i++)
770 secure_free (greeter, secrets[i]);
773 case GREETER_MESSAGE_CANCEL_AUTHENTICATION:
774 handle_cancel_authentication (greeter);
776 case GREETER_MESSAGE_START_SESSION:
777 session_name = read_string (greeter, &offset);
778 handle_start_session (greeter, session_name);
779 g_free (session_name);
781 case GREETER_MESSAGE_SET_LANGUAGE:
782 language = read_string (greeter, &offset);
783 handle_set_language (greeter, language);
787 g_warning ("Unknown message from greeter: %d", id);
791 greeter->priv->n_read = 0;
797 greeter_get_guest_authenticated (Greeter *greeter)
799 g_return_val_if_fail (greeter != NULL, FALSE);
800 return greeter->priv->guest_account_authenticated;
804 greeter_get_authentication_session (Greeter *greeter)
806 g_return_val_if_fail (greeter != NULL, NULL);
807 return greeter->priv->authentication_session;
811 greeter_start (Session *session)
813 Greeter *greeter = GREETER (session);
814 int to_greeter_pipe[2], from_greeter_pipe[2];
815 gboolean result = FALSE;
818 /* Create a pipe to talk with the greeter */
819 if (pipe (to_greeter_pipe) != 0 || pipe (from_greeter_pipe) != 0)
821 g_warning ("Failed to create pipes: %s", strerror (errno));
824 greeter->priv->to_greeter_channel = g_io_channel_unix_new (to_greeter_pipe[1]);
825 g_io_channel_set_encoding (greeter->priv->to_greeter_channel, NULL, NULL);
826 greeter->priv->from_greeter_channel = g_io_channel_unix_new (from_greeter_pipe[0]);
827 g_io_channel_set_encoding (greeter->priv->from_greeter_channel, NULL, NULL);
828 g_io_channel_set_buffered (greeter->priv->from_greeter_channel, FALSE);
829 g_io_add_watch (greeter->priv->from_greeter_channel, G_IO_IN | G_IO_HUP, read_cb, greeter);
831 /* Let the greeter session know how to communicate with the daemon */
832 value = g_strdup_printf ("%d", from_greeter_pipe[1]);
833 session_set_env (SESSION (greeter), "LIGHTDM_TO_SERVER_FD", value);
835 value = g_strdup_printf ("%d", to_greeter_pipe[0]);
836 session_set_env (SESSION (greeter), "LIGHTDM_FROM_SERVER_FD", value);
839 /* Don't allow the daemon end of the pipes to be accessed in child processes */
840 fcntl (to_greeter_pipe[1], F_SETFD, FD_CLOEXEC);
841 fcntl (from_greeter_pipe[0], F_SETFD, FD_CLOEXEC);
843 result = SESSION_CLASS (greeter_parent_class)->start (session);
845 /* Close the session ends of the pipe */
846 close (to_greeter_pipe[0]);
847 close (from_greeter_pipe[1]);
853 greeter_real_create_session (Greeter *greeter)
859 greeter_real_start_session (Greeter *greeter, SessionType type, const gchar *session)
865 greeter_init (Greeter *greeter)
867 greeter->priv = G_TYPE_INSTANCE_GET_PRIVATE (greeter, GREETER_TYPE, GreeterPrivate);
868 greeter->priv->read_buffer = secure_malloc (greeter, HEADER_SIZE);
869 greeter->priv->hints = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
870 greeter->priv->use_secure_memory = config_get_boolean (config_get_instance (), "LightDM", "lock-memory");
874 greeter_finalize (GObject *object)
878 self = GREETER (object);
880 g_free (self->priv->pam_service);
881 g_free (self->priv->autologin_pam_service);
882 secure_free (self, self->priv->read_buffer);
883 g_hash_table_unref (self->priv->hints);
884 g_free (self->priv->remote_session);
885 if (self->priv->authentication_session)
887 g_signal_handlers_disconnect_matched (self->priv->authentication_session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
888 g_object_unref (self->priv->authentication_session);
890 if (self->priv->to_greeter_channel)
891 g_io_channel_unref (self->priv->to_greeter_channel);
892 if (self->priv->from_greeter_channel)
893 g_io_channel_unref (self->priv->from_greeter_channel);
895 G_OBJECT_CLASS (greeter_parent_class)->finalize (object);
899 greeter_class_init (GreeterClass *klass)
901 SessionClass *session_class = SESSION_CLASS (klass);
902 GObjectClass *object_class = G_OBJECT_CLASS (klass);
904 klass->create_session = greeter_real_create_session;
905 klass->start_session = greeter_real_start_session;
906 session_class->start = greeter_start;
907 object_class->finalize = greeter_finalize;
910 g_signal_new ("connected",
911 G_TYPE_FROM_CLASS (klass),
913 G_STRUCT_OFFSET (GreeterClass, connected),
915 g_cclosure_marshal_VOID__VOID,
918 signals[CREATE_SESSION] =
919 g_signal_new ("create-session",
920 G_TYPE_FROM_CLASS (klass),
922 G_STRUCT_OFFSET (GreeterClass, create_session),
923 g_signal_accumulator_first_wins,
925 ldm_marshal_OBJECT__VOID,
928 signals[START_SESSION] =
929 g_signal_new ("start-session",
930 G_TYPE_FROM_CLASS (klass),
932 G_STRUCT_OFFSET (GreeterClass, start_session),
933 g_signal_accumulator_true_handled,
935 ldm_marshal_BOOLEAN__INT_STRING,
936 G_TYPE_BOOLEAN, 2, G_TYPE_INT, G_TYPE_STRING);
938 g_type_class_add_private (klass, sizeof (GreeterPrivate));