2 * WPA Supplicant / dbus-based control interface
3 * Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
20 #include "wpa_supplicant_i.h"
21 #include "drivers/driver.h"
23 #include "ctrl_iface_dbus.h"
24 #include "ctrl_iface_dbus_handlers.h"
26 #define _DBUS_VERSION (DBUS_VERSION_MAJOR << 8 | DBUS_VERSION_MINOR)
27 #define DBUS_VER(major, minor) ((major) << 8 | (minor))
29 #if _DBUS_VERSION < DBUS_VER(1,1)
30 #define dbus_watch_get_unix_fd dbus_watch_get_fd
34 struct ctrl_iface_dbus_priv
{
37 struct wpa_global
*global
;
43 static void process_watch(struct ctrl_iface_dbus_priv
*iface
,
44 DBusWatch
*watch
, eloop_event_type type
)
46 dbus_connection_ref(iface
->con
);
48 iface
->should_dispatch
= 0;
50 if (type
== EVENT_TYPE_READ
)
51 dbus_watch_handle(watch
, DBUS_WATCH_READABLE
);
52 else if (type
== EVENT_TYPE_WRITE
)
53 dbus_watch_handle(watch
, DBUS_WATCH_WRITABLE
);
54 else if (type
== EVENT_TYPE_EXCEPTION
)
55 dbus_watch_handle(watch
, DBUS_WATCH_ERROR
);
57 if (iface
->should_dispatch
) {
58 while (dbus_connection_get_dispatch_status(iface
->con
) ==
59 DBUS_DISPATCH_DATA_REMAINS
)
60 dbus_connection_dispatch(iface
->con
);
61 iface
->should_dispatch
= 0;
64 dbus_connection_unref(iface
->con
);
68 static void process_watch_exception(int sock
, void *eloop_ctx
, void *sock_ctx
)
70 process_watch(eloop_ctx
, sock_ctx
, EVENT_TYPE_EXCEPTION
);
74 static void process_watch_read(int sock
, void *eloop_ctx
, void *sock_ctx
)
76 process_watch(eloop_ctx
, sock_ctx
, EVENT_TYPE_READ
);
80 static void process_watch_write(int sock
, void *eloop_ctx
, void *sock_ctx
)
82 process_watch(eloop_ctx
, sock_ctx
, EVENT_TYPE_WRITE
);
86 static void connection_setup_add_watch(struct ctrl_iface_dbus_priv
*iface
,
92 if (!dbus_watch_get_enabled(watch
))
95 flags
= dbus_watch_get_flags(watch
);
96 fd
= dbus_watch_get_unix_fd(watch
);
98 eloop_register_sock(fd
, EVENT_TYPE_EXCEPTION
, process_watch_exception
,
101 if (flags
& DBUS_WATCH_READABLE
) {
102 eloop_register_sock(fd
, EVENT_TYPE_READ
, process_watch_read
,
105 if (flags
& DBUS_WATCH_WRITABLE
) {
106 eloop_register_sock(fd
, EVENT_TYPE_WRITE
, process_watch_write
,
110 dbus_watch_set_data(watch
, iface
, NULL
);
114 static void connection_setup_remove_watch(struct ctrl_iface_dbus_priv
*iface
,
120 flags
= dbus_watch_get_flags(watch
);
121 fd
= dbus_watch_get_unix_fd(watch
);
123 eloop_unregister_sock(fd
, EVENT_TYPE_EXCEPTION
);
125 if (flags
& DBUS_WATCH_READABLE
)
126 eloop_unregister_sock(fd
, EVENT_TYPE_READ
);
127 if (flags
& DBUS_WATCH_WRITABLE
)
128 eloop_unregister_sock(fd
, EVENT_TYPE_WRITE
);
130 dbus_watch_set_data(watch
, NULL
, NULL
);
134 static dbus_bool_t
add_watch(DBusWatch
*watch
, void *data
)
136 connection_setup_add_watch(data
, watch
);
141 static void remove_watch(DBusWatch
*watch
, void *data
)
143 connection_setup_remove_watch(data
, watch
);
147 static void watch_toggled(DBusWatch
*watch
, void *data
)
149 if (dbus_watch_get_enabled(watch
))
150 add_watch(watch
, data
);
152 remove_watch(watch
, data
);
156 static void process_timeout(void *eloop_ctx
, void *sock_ctx
)
158 DBusTimeout
*timeout
= sock_ctx
;
160 dbus_timeout_handle(timeout
);
164 static void connection_setup_add_timeout(struct ctrl_iface_dbus_priv
*iface
,
165 DBusTimeout
*timeout
)
167 if (!dbus_timeout_get_enabled(timeout
))
170 eloop_register_timeout(0, dbus_timeout_get_interval(timeout
) * 1000,
171 process_timeout
, iface
, timeout
);
173 dbus_timeout_set_data(timeout
, iface
, NULL
);
177 static void connection_setup_remove_timeout(struct ctrl_iface_dbus_priv
*iface
,
178 DBusTimeout
*timeout
)
180 eloop_cancel_timeout(process_timeout
, iface
, timeout
);
181 dbus_timeout_set_data(timeout
, NULL
, NULL
);
185 static dbus_bool_t
add_timeout(DBusTimeout
*timeout
, void *data
)
187 if (!dbus_timeout_get_enabled(timeout
))
190 connection_setup_add_timeout(data
, timeout
);
196 static void remove_timeout(DBusTimeout
*timeout
, void *data
)
198 connection_setup_remove_timeout(data
, timeout
);
202 static void timeout_toggled(DBusTimeout
*timeout
, void *data
)
204 if (dbus_timeout_get_enabled(timeout
))
205 add_timeout(timeout
, data
);
207 remove_timeout(timeout
, data
);
211 static void process_wakeup_main(int sig
, void *eloop_ctx
, void *signal_ctx
)
213 struct ctrl_iface_dbus_priv
*iface
= signal_ctx
;
215 if (sig
!= SIGPOLL
|| !iface
->con
)
218 if (dbus_connection_get_dispatch_status(iface
->con
) !=
219 DBUS_DISPATCH_DATA_REMAINS
)
222 /* Only dispatch once - we do not want to starve other events */
223 dbus_connection_ref(iface
->con
);
224 dbus_connection_dispatch(iface
->con
);
225 dbus_connection_unref(iface
->con
);
230 * wakeup_main - Attempt to wake our mainloop up
231 * @data: dbus control interface private data
233 * Try to wake up the main eloop so it will process
234 * dbus events that may have happened.
236 static void wakeup_main(void *data
)
238 struct ctrl_iface_dbus_priv
*iface
= data
;
240 /* Use SIGPOLL to break out of the eloop select() */
242 iface
->should_dispatch
= 1;
247 * connection_setup_wakeup_main - Tell dbus about our wakeup_main function
248 * @iface: dbus control interface private data
249 * Returns: 0 on success, -1 on failure
251 * Register our wakeup_main handler with dbus
253 static int connection_setup_wakeup_main(struct ctrl_iface_dbus_priv
*iface
)
255 if (eloop_register_signal(SIGPOLL
, process_wakeup_main
, iface
))
258 dbus_connection_set_wakeup_main_function(iface
->con
, wakeup_main
,
266 * wpa_supplicant_dbus_next_objid - Return next available object id
267 * @iface: dbus control interface private data
270 u32
wpa_supplicant_dbus_next_objid (struct ctrl_iface_dbus_priv
*iface
)
272 return iface
->next_objid
++;
277 * wpas_dbus_decompose_object_path - Decompose an interface object path into parts
278 * @path: The dbus object path
279 * @network: (out) the configured network this object path refers to, if any
280 * @bssid: (out) the scanned bssid this object path refers to, if any
281 * Returns: The object path of the network interface this path refers to
283 * For a given object path, decomposes the object path into object id, network,
284 * and BSSID parts, if those parts exist.
286 char * wpas_dbus_decompose_object_path(const char *path
, char **network
,
289 const unsigned int dev_path_prefix_len
=
290 strlen(WPAS_DBUS_PATH_INTERFACES
"/");
294 /* Be a bit paranoid about path */
295 if (!path
|| strncmp(path
, WPAS_DBUS_PATH_INTERFACES
"/",
296 dev_path_prefix_len
))
299 /* Ensure there's something at the end of the path */
300 if ((path
+ dev_path_prefix_len
)[0] == '\0')
303 obj_path_only
= strdup(path
);
304 if (obj_path_only
== NULL
)
307 next_sep
= strchr(obj_path_only
+ dev_path_prefix_len
, '/');
308 if (next_sep
!= NULL
) {
309 const char *net_part
= strstr(next_sep
,
310 WPAS_DBUS_NETWORKS_PART
"/");
311 const char *bssid_part
= strstr(next_sep
,
312 WPAS_DBUS_BSSIDS_PART
"/");
314 if (network
&& net_part
) {
315 /* Deal with a request for a configured network */
316 const char *net_name
= net_part
+
317 strlen(WPAS_DBUS_NETWORKS_PART
"/");
319 if (strlen(net_name
))
320 *network
= strdup(net_name
);
321 } else if (bssid
&& bssid_part
) {
322 /* Deal with a request for a scanned BSSID */
323 const char *bssid_name
= bssid_part
+
324 strlen(WPAS_DBUS_BSSIDS_PART
"/");
325 if (strlen(bssid_name
))
326 *bssid
= strdup(bssid_name
);
331 /* Cut off interface object path before "/" */
335 return obj_path_only
;
340 * wpas_dbus_new_invalid_iface_error - Return a new invalid interface error message
341 * @message: Pointer to incoming dbus message this error refers to
342 * Returns: A dbus error message
344 * Convenience function to create and return an invalid interface error
346 DBusMessage
* wpas_dbus_new_invalid_iface_error(DBusMessage
*message
)
348 return dbus_message_new_error(message
, WPAS_ERROR_INVALID_IFACE
,
349 "wpa_supplicant knows nothing about "
355 * wpas_dbus_new_invalid_network_error - Return a new invalid network error message
356 * @message: Pointer to incoming dbus message this error refers to
357 * Returns: a dbus error message
359 * Convenience function to create and return an invalid network error
361 DBusMessage
* wpas_dbus_new_invalid_network_error(DBusMessage
*message
)
363 return dbus_message_new_error(message
, WPAS_ERROR_INVALID_NETWORK
,
364 "The requested network does not exist.");
369 * wpas_dbus_new_invalid_bssid_error - Return a new invalid bssid error message
370 * @message: Pointer to incoming dbus message this error refers to
371 * Returns: a dbus error message
373 * Convenience function to create and return an invalid bssid error
375 static DBusMessage
* wpas_dbus_new_invalid_bssid_error(DBusMessage
*message
)
377 return dbus_message_new_error(message
, WPAS_ERROR_INVALID_BSSID
,
378 "The BSSID requested was invalid.");
383 * wpas_dispatch_network_method - dispatch messages for configured networks
384 * @message: the incoming dbus message
385 * @wpa_s: a network interface's data
386 * @network_id: id of the configured network we're interested in
387 * Returns: a reply dbus message, or a dbus error message
389 * This function dispatches all incoming dbus messages for configured networks.
391 static DBusMessage
* wpas_dispatch_network_method(DBusMessage
*message
,
392 struct wpa_supplicant
*wpa_s
,
395 DBusMessage
*reply
= NULL
;
396 const char *method
= dbus_message_get_member(message
);
397 struct wpa_ssid
*ssid
;
399 ssid
= wpa_config_get_network(wpa_s
->conf
, network_id
);
401 return wpas_dbus_new_invalid_network_error(message
);
403 if (!strcmp(method
, "set"))
404 reply
= wpas_dbus_iface_set_network(message
, wpa_s
, ssid
);
405 else if (!strcmp(method
, "enable"))
406 reply
= wpas_dbus_iface_enable_network(message
, wpa_s
, ssid
);
407 else if (!strcmp(method
, "disable"))
408 reply
= wpas_dbus_iface_disable_network(message
, wpa_s
, ssid
);
415 * wpas_dispatch_bssid_method - dispatch messages for scanned networks
416 * @message: the incoming dbus message
417 * @wpa_s: a network interface's data
418 * @bssid: bssid of the scanned network we're interested in
419 * Returns: a reply dbus message, or a dbus error message
421 * This function dispatches all incoming dbus messages for scanned networks.
423 static DBusMessage
* wpas_dispatch_bssid_method(DBusMessage
*message
,
424 struct wpa_supplicant
*wpa_s
,
427 DBusMessage
*reply
= NULL
;
428 const char *method
= dbus_message_get_member(message
);
429 struct wpa_scan_res
*res
= NULL
;
432 /* Ensure we actually have scan data */
433 if (wpa_s
->scan_res
== NULL
&&
434 wpa_supplicant_get_scan_results(wpa_s
) < 0) {
435 reply
= wpas_dbus_new_invalid_bssid_error(message
);
439 /* Find the bssid's scan data */
440 for (i
= 0; i
< wpa_s
->scan_res
->num
; i
++) {
441 struct wpa_scan_res
*search_res
= wpa_s
->scan_res
->res
[i
];
444 memset(mac_str
, 0, sizeof(mac_str
));
445 snprintf(mac_str
, sizeof(mac_str
) - 1, WPAS_DBUS_BSSID_FORMAT
,
446 MAC2STR(search_res
->bssid
));
447 if (!strcmp(bssid
, mac_str
)) {
454 reply
= wpas_dbus_new_invalid_bssid_error(message
);
458 /* Dispatch the method call against the scanned bssid */
459 if (!strcmp(method
, "properties"))
460 reply
= wpas_dbus_bssid_properties(message
, wpa_s
, res
);
468 * wpas_iface_message_handler - Dispatch messages for interfaces or networks
469 * @connection: Connection to the system message bus
470 * @message: An incoming dbus message
471 * @user_data: A pointer to a dbus control interface data structure
472 * Returns: Whether or not the message was handled
474 * This function dispatches all incoming dbus messages for network interfaces,
475 * or objects owned by them, such as scanned BSSIDs and configured networks.
477 static DBusHandlerResult
wpas_iface_message_handler(DBusConnection
*connection
,
478 DBusMessage
*message
,
481 struct wpa_supplicant
*wpa_s
= user_data
;
482 const char *method
= dbus_message_get_member(message
);
483 const char *path
= dbus_message_get_path(message
);
484 const char *msg_interface
= dbus_message_get_interface(message
);
485 char *iface_obj_path
= NULL
;
486 char *network
= NULL
;
488 DBusMessage
*reply
= NULL
;
490 /* Caller must specify a message interface */
494 iface_obj_path
= wpas_dbus_decompose_object_path(path
, &network
,
496 if (iface_obj_path
== NULL
) {
497 reply
= wpas_dbus_new_invalid_iface_error(message
);
501 /* Make sure the message's object path actually refers to the
502 * wpa_supplicant structure it's supposed to (which is wpa_s)
504 if (wpa_supplicant_get_iface_by_dbus_path(wpa_s
->global
,
505 iface_obj_path
) != wpa_s
) {
506 reply
= wpas_dbus_new_invalid_iface_error(message
);
510 if (network
&& !strcmp(msg_interface
, WPAS_DBUS_IFACE_NETWORK
)) {
511 /* A method for one of this interface's configured networks */
512 int nid
= strtoul(network
, NULL
, 10);
514 reply
= wpas_dispatch_network_method(message
, wpa_s
,
517 reply
= wpas_dbus_new_invalid_network_error(message
);
518 } else if (bssid
&& !strcmp(msg_interface
, WPAS_DBUS_IFACE_BSSID
)) {
519 /* A method for one of this interface's scanned BSSIDs */
520 reply
= wpas_dispatch_bssid_method(message
, wpa_s
, bssid
);
521 } else if (!strcmp(msg_interface
, WPAS_DBUS_IFACE_INTERFACE
)) {
522 /* A method for an interface only. */
523 if (!strcmp(method
, "scan"))
524 reply
= wpas_dbus_iface_scan(message
, wpa_s
);
525 else if (!strcmp(method
, "scanResults"))
526 reply
= wpas_dbus_iface_scan_results(message
, wpa_s
);
527 else if (!strcmp(method
, "addNetwork"))
528 reply
= wpas_dbus_iface_add_network(message
, wpa_s
);
529 else if (!strcmp(method
, "removeNetwork"))
530 reply
= wpas_dbus_iface_remove_network(message
, wpa_s
);
531 else if (!strcmp(method
, "selectNetwork"))
532 reply
= wpas_dbus_iface_select_network(message
, wpa_s
);
533 else if (!strcmp(method
, "capabilities"))
534 reply
= wpas_dbus_iface_capabilities(message
, wpa_s
);
535 else if (!strcmp(method
, "disconnect"))
536 reply
= wpas_dbus_iface_disconnect(message
, wpa_s
);
537 else if (!strcmp(method
, "setAPScan"))
538 reply
= wpas_dbus_iface_set_ap_scan(message
, wpa_s
);
539 else if (!strcmp(method
, "setSmartcardModules"))
540 reply
= wpas_dbus_iface_set_smartcard_modules(message
,
542 else if (!strcmp(method
, "state"))
543 reply
= wpas_dbus_iface_get_state(message
, wpa_s
);
544 else if (!strcmp(method
, "scanning"))
545 reply
= wpas_dbus_iface_get_scanning(message
, wpa_s
);
546 else if (!strcmp(method
, "setBlobs"))
547 reply
= wpas_dbus_iface_set_blobs(message
, wpa_s
);
548 else if (!strcmp(method
, "removeBlobs"))
549 reply
= wpas_dbus_iface_remove_blobs(message
, wpa_s
);
551 else if (!os_strcmp(method
, "wpsPbc"))
552 reply
= wpas_dbus_iface_wps_pbc(message
, wpa_s
);
553 else if (!os_strcmp(method
, "wpsPin"))
554 reply
= wpas_dbus_iface_wps_pin(message
, wpa_s
);
555 else if (!os_strcmp(method
, "wpsReg"))
556 reply
= wpas_dbus_iface_wps_reg(message
, wpa_s
);
557 #endif /* CONFIG_WPS */
560 /* If the message was handled, send back the reply */
562 if (!dbus_message_get_no_reply(message
))
563 dbus_connection_send(connection
, reply
, NULL
);
564 dbus_message_unref(reply
);
568 free(iface_obj_path
);
571 return reply
? DBUS_HANDLER_RESULT_HANDLED
:
572 DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
577 * wpas_message_handler - dispatch incoming dbus messages
578 * @connection: connection to the system message bus
579 * @message: an incoming dbus message
580 * @user_data: a pointer to a dbus control interface data structure
581 * Returns: whether or not the message was handled
583 * This function dispatches all incoming dbus messages to the correct
584 * handlers, depending on what the message's target object path is,
585 * and what the method call is.
587 static DBusHandlerResult
wpas_message_handler(DBusConnection
*connection
,
588 DBusMessage
*message
, void *user_data
)
590 struct ctrl_iface_dbus_priv
*ctrl_iface
= user_data
;
593 const char *msg_interface
;
594 DBusMessage
*reply
= NULL
;
596 method
= dbus_message_get_member(message
);
597 path
= dbus_message_get_path(message
);
598 msg_interface
= dbus_message_get_interface(message
);
599 if (!method
|| !path
|| !ctrl_iface
|| !msg_interface
)
600 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
602 /* Validate the method interface */
603 if (strcmp(msg_interface
, WPAS_DBUS_INTERFACE
) != 0)
604 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
606 if (!strcmp(path
, WPAS_DBUS_PATH
)) {
607 /* dispatch methods against our global dbus interface here */
608 if (!strcmp(method
, "addInterface")) {
609 reply
= wpas_dbus_global_add_interface(
610 message
, ctrl_iface
->global
);
611 } else if (!strcmp(method
, "removeInterface")) {
612 reply
= wpas_dbus_global_remove_interface(
613 message
, ctrl_iface
->global
);
614 } else if (!strcmp(method
, "getInterface")) {
615 reply
= wpas_dbus_global_get_interface(
616 message
, ctrl_iface
->global
);
617 } else if (!strcmp(method
, "setDebugParams")) {
618 reply
= wpas_dbus_global_set_debugparams(
619 message
, ctrl_iface
->global
);
623 /* If the message was handled, send back the reply */
625 if (!dbus_message_get_no_reply(message
))
626 dbus_connection_send(connection
, reply
, NULL
);
627 dbus_message_unref(reply
);
630 return reply
? DBUS_HANDLER_RESULT_HANDLED
:
631 DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
636 * wpa_supplicant_dbus_notify_scan_results - Send a scan results signal
637 * @wpa_s: %wpa_supplicant network interface data
638 * Returns: 0 on success, -1 on failure
640 * Notify listeners that this interface has updated scan results.
642 void wpa_supplicant_dbus_notify_scan_results(struct wpa_supplicant
*wpa_s
)
644 struct ctrl_iface_dbus_priv
*iface
= wpa_s
->global
->dbus_ctrl_iface
;
645 DBusMessage
*_signal
;
648 /* Do nothing if the control interface is not turned on */
652 path
= wpa_supplicant_get_dbus_path(wpa_s
);
654 perror("wpa_supplicant_dbus_notify_scan_results[dbus]: "
655 "interface didn't have a dbus path");
656 wpa_printf(MSG_ERROR
,
657 "wpa_supplicant_dbus_notify_scan_results[dbus]: "
658 "interface didn't have a dbus path; can't send "
659 "scan result signal.");
662 _signal
= dbus_message_new_signal(path
, WPAS_DBUS_IFACE_INTERFACE
,
663 "ScanResultsAvailable");
664 if (_signal
== NULL
) {
665 perror("wpa_supplicant_dbus_notify_scan_results[dbus]: "
666 "couldn't create dbus signal; likely out of memory");
667 wpa_printf(MSG_ERROR
, "dbus control interface: not enough "
668 "memory to send scan results signal.");
671 dbus_connection_send(iface
->con
, _signal
, NULL
);
672 dbus_message_unref(_signal
);
677 * wpa_supplicant_dbus_notify_state_change - Send a state change signal
678 * @wpa_s: %wpa_supplicant network interface data
679 * @new_state: new state wpa_supplicant is entering
680 * @old_state: old state wpa_supplicant is leaving
681 * Returns: 0 on success, -1 on failure
683 * Notify listeners that wpa_supplicant has changed state
685 void wpa_supplicant_dbus_notify_state_change(struct wpa_supplicant
*wpa_s
,
686 wpa_states new_state
,
687 wpa_states old_state
)
689 struct ctrl_iface_dbus_priv
*iface
;
690 DBusMessage
*_signal
= NULL
;
692 const char *new_state_str
, *old_state_str
;
694 /* Do nothing if the control interface is not turned on */
695 if (wpa_s
->global
== NULL
)
697 iface
= wpa_s
->global
->dbus_ctrl_iface
;
701 /* Only send signal if state really changed */
702 if (new_state
== old_state
)
705 path
= wpa_supplicant_get_dbus_path(wpa_s
);
707 perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
708 "interface didn't have a dbus path");
709 wpa_printf(MSG_ERROR
,
710 "wpa_supplicant_dbus_notify_state_change[dbus]: "
711 "interface didn't have a dbus path; can't send "
715 _signal
= dbus_message_new_signal(path
, WPAS_DBUS_IFACE_INTERFACE
,
717 if (_signal
== NULL
) {
718 perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
719 "couldn't create dbus signal; likely out of memory");
720 wpa_printf(MSG_ERROR
,
721 "wpa_supplicant_dbus_notify_state_change[dbus]: "
722 "couldn't create dbus signal; likely out of "
727 new_state_str
= wpa_supplicant_state_txt(new_state
);
728 old_state_str
= wpa_supplicant_state_txt(old_state
);
729 if (new_state_str
== NULL
|| old_state_str
== NULL
) {
730 perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
731 "couldn't convert state strings");
732 wpa_printf(MSG_ERROR
,
733 "wpa_supplicant_dbus_notify_state_change[dbus]: "
734 "couldn't convert state strings.");
738 if (!dbus_message_append_args(_signal
,
739 DBUS_TYPE_STRING
, &new_state_str
,
740 DBUS_TYPE_STRING
, &old_state_str
,
741 DBUS_TYPE_INVALID
)) {
742 perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
743 "not enough memory to construct state change signal.");
744 wpa_printf(MSG_ERROR
,
745 "wpa_supplicant_dbus_notify_state_change[dbus]: "
746 "not enough memory to construct state change "
751 dbus_connection_send(iface
->con
, _signal
, NULL
);
754 dbus_message_unref(_signal
);
759 * wpa_supplicant_dbus_notify_scanning - send scanning status
760 * @wpa_s: %wpa_supplicant network interface data
761 * Returns: 0 on success, -1 on failure
763 * Notify listeners of interface scanning state changes
765 void wpa_supplicant_dbus_notify_scanning(struct wpa_supplicant
*wpa_s
)
767 struct ctrl_iface_dbus_priv
*iface
= wpa_s
->global
->dbus_ctrl_iface
;
768 DBusMessage
*_signal
;
770 dbus_bool_t scanning
= wpa_s
->scanning
? TRUE
: FALSE
;
772 /* Do nothing if the control interface is not turned on */
776 path
= wpa_supplicant_get_dbus_path(wpa_s
);
778 perror("wpa_supplicant_dbus_notify_scanning[dbus]: interface "
779 "didn't have a dbus path");
780 wpa_printf(MSG_ERROR
,
781 "%s[dbus]: interface didn't have a dbus path; "
782 "can't send scanning signal.", __FUNCTION__
);
785 _signal
= dbus_message_new_signal(path
, WPAS_DBUS_IFACE_INTERFACE
,
787 if (_signal
== NULL
) {
788 perror("wpa_supplicant_dbus_notify_scanning[dbus]: couldn't "
789 "create dbus signal; likely out of memory");
790 wpa_printf(MSG_ERROR
, "%s[dbus]: dbus control interface: not "
791 "enough memory to send scan results signal.",
796 if (dbus_message_append_args(_signal
,
797 DBUS_TYPE_BOOLEAN
, &scanning
,
798 DBUS_TYPE_INVALID
)) {
799 dbus_connection_send(iface
->con
, _signal
, NULL
);
801 perror("wpa_supplicant_dbus_notify_scanning[dbus]: not enough "
802 "memory to construct signal.");
803 wpa_printf(MSG_ERROR
, "%s[dbus]: not enough memory to "
804 "construct signal.", __FUNCTION__
);
806 dbus_message_unref(_signal
);
811 void wpa_supplicant_dbus_notify_wps_cred(struct wpa_supplicant
*wpa_s
,
812 const struct wps_credential
*cred
)
814 struct ctrl_iface_dbus_priv
*iface
;
815 DBusMessage
*_signal
= NULL
;
818 /* Do nothing if the control interface is not turned on */
819 if (wpa_s
->global
== NULL
)
821 iface
= wpa_s
->global
->dbus_ctrl_iface
;
825 path
= wpa_supplicant_get_dbus_path(wpa_s
);
827 perror("wpa_supplicant_dbus_notify_wps_cred[dbus]: "
828 "interface didn't have a dbus path");
829 wpa_printf(MSG_ERROR
,
830 "wpa_supplicant_dbus_notify_wps_cred[dbus]: "
831 "interface didn't have a dbus path; can't send "
835 _signal
= dbus_message_new_signal(path
, WPAS_DBUS_IFACE_INTERFACE
,
837 if (_signal
== NULL
) {
838 perror("wpa_supplicant_dbus_notify_wps_cred[dbus]: "
839 "couldn't create dbus signal; likely out of memory");
840 wpa_printf(MSG_ERROR
,
841 "wpa_supplicant_dbus_notify_wps_cred[dbus]: "
842 "couldn't create dbus signal; likely out of "
847 if (!dbus_message_append_args(_signal
,
848 DBUS_TYPE_ARRAY
, DBUS_TYPE_BYTE
,
849 &cred
->cred_attr
, cred
->cred_attr_len
,
850 DBUS_TYPE_INVALID
)) {
851 perror("wpa_supplicant_dbus_notify_wps_cred[dbus]: "
852 "not enough memory to construct signal.");
853 wpa_printf(MSG_ERROR
,
854 "wpa_supplicant_dbus_notify_wps_cred[dbus]: "
855 "not enough memory to construct signal.");
859 dbus_connection_send(iface
->con
, _signal
, NULL
);
862 dbus_message_unref(_signal
);
864 #else /* CONFIG_WPS */
865 void wpa_supplicant_dbus_notify_wps_cred(struct wpa_supplicant
*wpa_s
,
866 const struct wps_credential
*cred
)
869 #endif /* CONFIG_WPS */
873 * integrate_with_eloop - Register our mainloop integration with dbus
874 * @connection: connection to the system message bus
875 * @iface: a dbus control interface data structure
876 * Returns: 0 on success, -1 on failure
878 * We register our mainloop integration functions with dbus here.
880 static int integrate_with_eloop(DBusConnection
*connection
,
881 struct ctrl_iface_dbus_priv
*iface
)
883 if (!dbus_connection_set_watch_functions(connection
, add_watch
,
884 remove_watch
, watch_toggled
,
886 perror("dbus_connection_set_watch_functions[dbus]");
887 wpa_printf(MSG_ERROR
, "Not enough memory to set up dbus.");
891 if (!dbus_connection_set_timeout_functions(connection
, add_timeout
,
893 timeout_toggled
, iface
,
895 perror("dbus_connection_set_timeout_functions[dbus]");
896 wpa_printf(MSG_ERROR
, "Not enough memory to set up dbus.");
900 if (connection_setup_wakeup_main(iface
) < 0) {
901 perror("connection_setup_wakeup_main[dbus]");
902 wpa_printf(MSG_ERROR
, "Could not setup main wakeup function.");
911 * dispatch_initial_dbus_messages - Dispatch initial dbus messages after
913 * @eloop_ctx: the DBusConnection to dispatch on
914 * @timeout_ctx: unused
916 * If clients are quick to notice that wpa_supplicant claimed its bus name,
917 * there may have been messages that came in before initialization was
918 * all finished. Dispatch those here.
920 static void dispatch_initial_dbus_messages(void *eloop_ctx
, void *timeout_ctx
)
922 DBusConnection
*con
= eloop_ctx
;
924 while (dbus_connection_get_dispatch_status(con
) ==
925 DBUS_DISPATCH_DATA_REMAINS
)
926 dbus_connection_dispatch(con
);
931 * wpa_supplicant_dbus_ctrl_iface_init - Initialize dbus control interface
932 * @global: Pointer to global data from wpa_supplicant_init()
933 * Returns: Pointer to dbus_ctrl_iface date or %NULL on failure
935 * Initialize the dbus control interface and start receiving commands from
936 * external programs over the bus.
938 struct ctrl_iface_dbus_priv
*
939 wpa_supplicant_dbus_ctrl_iface_init(struct wpa_global
*global
)
941 struct ctrl_iface_dbus_priv
*iface
;
944 DBusObjectPathVTable wpas_vtable
= {
945 NULL
, &wpas_message_handler
, NULL
, NULL
, NULL
, NULL
948 iface
= os_zalloc(sizeof(struct ctrl_iface_dbus_priv
));
952 iface
->global
= global
;
954 /* Get a reference to the system bus */
955 dbus_error_init(&error
);
956 iface
->con
= dbus_bus_get(DBUS_BUS_SYSTEM
, &error
);
957 dbus_error_free(&error
);
959 perror("dbus_bus_get[ctrl_iface_dbus]");
960 wpa_printf(MSG_ERROR
, "Could not acquire the system bus.");
964 /* Tell dbus about our mainloop integration functions */
965 if (integrate_with_eloop(iface
->con
, iface
))
968 /* Register the message handler for the global dbus interface */
969 if (!dbus_connection_register_object_path(iface
->con
,
970 WPAS_DBUS_PATH
, &wpas_vtable
,
972 perror("dbus_connection_register_object_path[dbus]");
973 wpa_printf(MSG_ERROR
, "Could not set up DBus message "
978 /* Register our service with the message bus */
979 dbus_error_init(&error
);
980 switch (dbus_bus_request_name(iface
->con
, WPAS_DBUS_SERVICE
,
982 case DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER
:
985 case DBUS_REQUEST_NAME_REPLY_EXISTS
:
986 case DBUS_REQUEST_NAME_REPLY_IN_QUEUE
:
987 case DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER
:
988 perror("dbus_bus_request_name[dbus]");
989 wpa_printf(MSG_ERROR
, "Could not request DBus service name: "
990 "already registered.");
993 perror("dbus_bus_request_name[dbus]");
994 wpa_printf(MSG_ERROR
, "Could not request DBus service name: "
995 "%s %s.", error
.name
, error
.message
);
998 dbus_error_free(&error
);
1003 wpa_printf(MSG_DEBUG
, "Providing DBus service '" WPAS_DBUS_SERVICE
1007 * Dispatch initial DBus messages that may have come in since the bus
1008 * name was claimed above. Happens when clients are quick to notice the
1009 * wpa_supplicant service.
1011 * FIXME: is there a better solution to this problem?
1013 eloop_register_timeout(0, 50, dispatch_initial_dbus_messages
,
1019 wpa_supplicant_dbus_ctrl_iface_deinit(iface
);
1025 * wpa_supplicant_dbus_ctrl_iface_deinit - Deinitialize dbus ctrl interface
1026 * @iface: Pointer to dbus private data from
1027 * wpa_supplicant_dbus_ctrl_iface_init()
1029 * Deinitialize the dbus control interface that was initialized with
1030 * wpa_supplicant_dbus_ctrl_iface_init().
1032 void wpa_supplicant_dbus_ctrl_iface_deinit(struct ctrl_iface_dbus_priv
*iface
)
1038 eloop_cancel_timeout(dispatch_initial_dbus_messages
,
1040 dbus_connection_set_watch_functions(iface
->con
, NULL
, NULL
,
1042 dbus_connection_set_timeout_functions(iface
->con
, NULL
, NULL
,
1044 dbus_connection_unref(iface
->con
);
1047 memset(iface
, 0, sizeof(struct ctrl_iface_dbus_priv
));
1053 * wpas_dbus_register_new_iface - Register a new interface with dbus
1054 * @wpa_s: %wpa_supplicant interface description structure to register
1055 * Returns: 0 on success, -1 on error
1057 * Registers a new interface with dbus and assigns it a dbus object path.
1059 int wpas_dbus_register_iface(struct wpa_supplicant
*wpa_s
)
1061 struct ctrl_iface_dbus_priv
*ctrl_iface
=
1062 wpa_s
->global
->dbus_ctrl_iface
;
1063 DBusConnection
* con
;
1065 DBusObjectPathVTable vtable
= {
1066 NULL
, &wpas_iface_message_handler
, NULL
, NULL
, NULL
, NULL
1071 /* Do nothing if the control interface is not turned on */
1072 if (ctrl_iface
== NULL
)
1075 con
= ctrl_iface
->con
;
1076 next
= wpa_supplicant_dbus_next_objid(ctrl_iface
);
1078 /* Create and set the interface's object path */
1079 path
= os_zalloc(WPAS_DBUS_OBJECT_PATH_MAX
);
1082 snprintf(path
, WPAS_DBUS_OBJECT_PATH_MAX
,
1083 WPAS_DBUS_PATH_INTERFACES
"/%u",
1085 if (wpa_supplicant_set_dbus_path(wpa_s
, path
)) {
1086 wpa_printf(MSG_DEBUG
,
1087 "Failed to set dbus path for interface %s",
1092 /* Register the message handler for the interface functions */
1093 if (!dbus_connection_register_fallback(con
, path
, &vtable
, wpa_s
)) {
1094 perror("wpas_dbus_register_iface [dbus]");
1095 wpa_printf(MSG_ERROR
, "Could not set up DBus message "
1096 "handler for interface %s.", wpa_s
->ifname
);
1108 * wpas_dbus_unregister_iface - Unregister an interface from dbus
1109 * @wpa_s: wpa_supplicant interface structure
1110 * Returns: 0 on success, -1 on failure
1112 * Unregisters the interface with dbus
1114 int wpas_dbus_unregister_iface(struct wpa_supplicant
*wpa_s
)
1116 struct ctrl_iface_dbus_priv
*ctrl_iface
;
1117 DBusConnection
*con
;
1120 /* Do nothing if the control interface is not turned on */
1121 if (wpa_s
== NULL
|| wpa_s
->global
== NULL
)
1123 ctrl_iface
= wpa_s
->global
->dbus_ctrl_iface
;
1124 if (ctrl_iface
== NULL
)
1127 con
= ctrl_iface
->con
;
1128 path
= wpa_supplicant_get_dbus_path(wpa_s
);
1130 if (!dbus_connection_unregister_object_path(con
, path
))
1133 free(wpa_s
->dbus_path
);
1134 wpa_s
->dbus_path
= NULL
;
1141 * wpa_supplicant_get_iface_by_dbus_path - Get a new network interface
1142 * @global: Pointer to global data from wpa_supplicant_init()
1143 * @path: Pointer to a dbus object path representing an interface
1144 * Returns: Pointer to the interface or %NULL if not found
1146 struct wpa_supplicant
* wpa_supplicant_get_iface_by_dbus_path(
1147 struct wpa_global
*global
, const char *path
)
1149 struct wpa_supplicant
*wpa_s
;
1151 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
) {
1152 if (strcmp(wpa_s
->dbus_path
, path
) == 0)
1160 * wpa_supplicant_set_dbus_path - Assign a dbus path to an interface
1161 * @wpa_s: wpa_supplicant interface structure
1162 * @path: dbus path to set on the interface
1163 * Returns: 0 on succes, -1 on error
1165 int wpa_supplicant_set_dbus_path(struct wpa_supplicant
*wpa_s
,
1168 u32 len
= strlen (path
);
1169 if (len
>= WPAS_DBUS_OBJECT_PATH_MAX
)
1171 if (wpa_s
->dbus_path
)
1173 wpa_s
->dbus_path
= strdup(path
);
1179 * wpa_supplicant_get_dbus_path - Get an interface's dbus path
1180 * @wpa_s: %wpa_supplicant interface structure
1181 * Returns: Interface's dbus object path, or %NULL on error
1183 const char * wpa_supplicant_get_dbus_path(struct wpa_supplicant
*wpa_s
)
1185 return wpa_s
->dbus_path
;