Line data Source code
1 : /*
2 : * WPA Supplicant / dbus-based control interface
3 : * Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "includes.h"
10 : #include <dbus/dbus.h>
11 :
12 : #include "common.h"
13 : #include "eloop.h"
14 : #include "wps/wps.h"
15 : #include "../config.h"
16 : #include "../wpa_supplicant_i.h"
17 : #include "../bss.h"
18 : #include "dbus_old.h"
19 : #include "dbus_old_handlers.h"
20 : #include "dbus_common_i.h"
21 :
22 :
23 : /**
24 : * wpas_dbus_decompose_object_path - Decompose an interface object path into parts
25 : * @path: The dbus object path
26 : * @network: (out) the configured network this object path refers to, if any
27 : * @bssid: (out) the scanned bssid this object path refers to, if any
28 : * Returns: The object path of the network interface this path refers to
29 : *
30 : * For a given object path, decomposes the object path into object id, network,
31 : * and BSSID parts, if those parts exist.
32 : */
33 154 : char * wpas_dbus_decompose_object_path(const char *path, char **network,
34 : char **bssid)
35 : {
36 154 : const unsigned int dev_path_prefix_len =
37 : strlen(WPAS_DBUS_PATH_INTERFACES "/");
38 : char *obj_path_only;
39 : char *next_sep;
40 :
41 : /* Be a bit paranoid about path */
42 154 : if (!path || strncmp(path, WPAS_DBUS_PATH_INTERFACES "/",
43 : dev_path_prefix_len))
44 3 : return NULL;
45 :
46 : /* Ensure there's something at the end of the path */
47 151 : if ((path + dev_path_prefix_len)[0] == '\0')
48 0 : return NULL;
49 :
50 151 : obj_path_only = os_strdup(path);
51 151 : if (obj_path_only == NULL)
52 1 : return NULL;
53 :
54 150 : next_sep = strchr(obj_path_only + dev_path_prefix_len, '/');
55 150 : if (next_sep != NULL) {
56 55 : const char *net_part = strstr(next_sep,
57 : WPAS_DBUS_NETWORKS_PART "/");
58 55 : const char *bssid_part = strstr(next_sep,
59 : WPAS_DBUS_BSSIDS_PART "/");
60 :
61 97 : if (network && net_part) {
62 : /* Deal with a request for a configured network */
63 42 : const char *net_name = net_part +
64 : strlen(WPAS_DBUS_NETWORKS_PART "/");
65 42 : *network = NULL;
66 42 : if (strlen(net_name))
67 42 : *network = os_strdup(net_name);
68 13 : } else if (bssid && bssid_part) {
69 : /* Deal with a request for a scanned BSSID */
70 13 : const char *bssid_name = bssid_part +
71 : strlen(WPAS_DBUS_BSSIDS_PART "/");
72 13 : if (strlen(bssid_name))
73 13 : *bssid = os_strdup(bssid_name);
74 : else
75 0 : *bssid = NULL;
76 : }
77 :
78 : /* Cut off interface object path before "/" */
79 55 : *next_sep = '\0';
80 : }
81 :
82 150 : return obj_path_only;
83 : }
84 :
85 :
86 : /**
87 : * wpas_dbus_new_invalid_iface_error - Return a new invalid interface error message
88 : * @message: Pointer to incoming dbus message this error refers to
89 : * Returns: A dbus error message
90 : *
91 : * Convenience function to create and return an invalid interface error
92 : */
93 4 : DBusMessage * wpas_dbus_new_invalid_iface_error(DBusMessage *message)
94 : {
95 4 : return dbus_message_new_error(
96 : message, WPAS_ERROR_INVALID_IFACE,
97 : "wpa_supplicant knows nothing about this interface.");
98 : }
99 :
100 :
101 : /**
102 : * wpas_dbus_new_invalid_network_error - Return a new invalid network error message
103 : * @message: Pointer to incoming dbus message this error refers to
104 : * Returns: a dbus error message
105 : *
106 : * Convenience function to create and return an invalid network error
107 : */
108 12 : DBusMessage * wpas_dbus_new_invalid_network_error(DBusMessage *message)
109 : {
110 12 : return dbus_message_new_error(message, WPAS_ERROR_INVALID_NETWORK,
111 : "The requested network does not exist.");
112 : }
113 :
114 :
115 : /**
116 : * wpas_dbus_new_invalid_bssid_error - Return a new invalid bssid error message
117 : * @message: Pointer to incoming dbus message this error refers to
118 : * Returns: a dbus error message
119 : *
120 : * Convenience function to create and return an invalid bssid error
121 : */
122 3 : static DBusMessage * wpas_dbus_new_invalid_bssid_error(DBusMessage *message)
123 : {
124 3 : return dbus_message_new_error(message, WPAS_ERROR_INVALID_BSSID,
125 : "The BSSID requested was invalid.");
126 : }
127 :
128 :
129 : /**
130 : * wpas_dispatch_network_method - dispatch messages for configured networks
131 : * @message: the incoming dbus message
132 : * @wpa_s: a network interface's data
133 : * @network_id: id of the configured network we're interested in
134 : * Returns: a reply dbus message, or a dbus error message
135 : *
136 : * This function dispatches all incoming dbus messages for configured networks.
137 : */
138 22 : static DBusMessage * wpas_dispatch_network_method(DBusMessage *message,
139 : struct wpa_supplicant *wpa_s,
140 : int network_id)
141 : {
142 22 : DBusMessage *reply = NULL;
143 22 : const char *method = dbus_message_get_member(message);
144 : struct wpa_ssid *ssid;
145 :
146 22 : ssid = wpa_config_get_network(wpa_s->conf, network_id);
147 22 : if (ssid == NULL)
148 2 : return wpas_dbus_new_invalid_network_error(message);
149 :
150 20 : if (!strcmp(method, "set"))
151 13 : reply = wpas_dbus_iface_set_network(message, wpa_s, ssid);
152 7 : else if (!strcmp(method, "enable"))
153 3 : reply = wpas_dbus_iface_enable_network(message, wpa_s, ssid);
154 4 : else if (!strcmp(method, "disable"))
155 4 : reply = wpas_dbus_iface_disable_network(message, wpa_s, ssid);
156 :
157 20 : return reply;
158 : }
159 :
160 :
161 : /**
162 : * wpas_dispatch_bssid_method - dispatch messages for scanned networks
163 : * @message: the incoming dbus message
164 : * @wpa_s: a network interface's data
165 : * @bssid: bssid of the scanned network we're interested in
166 : * Returns: a reply dbus message, or a dbus error message
167 : *
168 : * This function dispatches all incoming dbus messages for scanned networks.
169 : */
170 7 : static DBusMessage * wpas_dispatch_bssid_method(DBusMessage *message,
171 : struct wpa_supplicant *wpa_s,
172 : const char *bssid_txt)
173 : {
174 : u8 bssid[ETH_ALEN];
175 : struct wpa_bss *bss;
176 :
177 7 : if (hexstr2bin(bssid_txt, bssid, ETH_ALEN) < 0)
178 1 : return wpas_dbus_new_invalid_bssid_error(message);
179 :
180 6 : bss = wpa_bss_get_bssid(wpa_s, bssid);
181 6 : if (bss == NULL)
182 2 : return wpas_dbus_new_invalid_bssid_error(message);
183 :
184 : /* Dispatch the method call against the scanned bssid */
185 4 : if (os_strcmp(dbus_message_get_member(message), "properties") == 0)
186 3 : return wpas_dbus_bssid_properties(message, wpa_s, bss);
187 :
188 1 : return NULL;
189 : }
190 :
191 :
192 : /**
193 : * wpas_iface_message_handler - Dispatch messages for interfaces or networks
194 : * @connection: Connection to the system message bus
195 : * @message: An incoming dbus message
196 : * @user_data: A pointer to a dbus control interface data structure
197 : * Returns: Whether or not the message was handled
198 : *
199 : * This function dispatches all incoming dbus messages for network interfaces,
200 : * or objects owned by them, such as scanned BSSIDs and configured networks.
201 : */
202 140 : static DBusHandlerResult wpas_iface_message_handler(DBusConnection *connection,
203 : DBusMessage *message,
204 : void *user_data)
205 : {
206 140 : struct wpa_supplicant *wpa_s = user_data;
207 140 : const char *method = dbus_message_get_member(message);
208 140 : const char *path = dbus_message_get_path(message);
209 140 : const char *msg_interface = dbus_message_get_interface(message);
210 140 : char *iface_obj_path = NULL;
211 140 : char *network = NULL;
212 140 : char *bssid = NULL;
213 140 : DBusMessage *reply = NULL;
214 :
215 : /* Caller must specify a message interface */
216 140 : if (!msg_interface)
217 0 : goto out;
218 :
219 140 : wpa_printf(MSG_MSGDUMP, "dbus[old/iface]: %s.%s (%s) [%s]",
220 : msg_interface, method, path,
221 : dbus_message_get_signature(message));
222 :
223 140 : iface_obj_path = wpas_dbus_decompose_object_path(path, &network,
224 : &bssid);
225 140 : if (iface_obj_path == NULL) {
226 1 : reply = wpas_dbus_new_invalid_iface_error(message);
227 1 : goto out;
228 : }
229 :
230 : /* Make sure the message's object path actually refers to the
231 : * wpa_supplicant structure it's supposed to (which is wpa_s)
232 : */
233 139 : if (wpa_supplicant_get_iface_by_dbus_path(wpa_s->global,
234 : iface_obj_path) != wpa_s) {
235 0 : reply = wpas_dbus_new_invalid_iface_error(message);
236 0 : goto out;
237 : }
238 :
239 161 : if (network && !strcmp(msg_interface, WPAS_DBUS_IFACE_NETWORK)) {
240 : /* A method for one of this interface's configured networks */
241 22 : int nid = strtoul(network, NULL, 10);
242 :
243 22 : if (errno != EINVAL)
244 22 : reply = wpas_dispatch_network_method(message, wpa_s,
245 : nid);
246 : else
247 0 : reply = wpas_dbus_new_invalid_network_error(message);
248 117 : } else if (bssid && !strcmp(msg_interface, WPAS_DBUS_IFACE_BSSID)) {
249 : /* A method for one of this interface's scanned BSSIDs */
250 7 : reply = wpas_dispatch_bssid_method(message, wpa_s, bssid);
251 110 : } else if (!strcmp(msg_interface, WPAS_DBUS_IFACE_INTERFACE)) {
252 : /* A method for an interface only. */
253 76 : if (!strcmp(method, "scan"))
254 1 : reply = wpas_dbus_iface_scan(message, wpa_s);
255 75 : else if (!strcmp(method, "scanResults"))
256 3 : reply = wpas_dbus_iface_scan_results(message, wpa_s);
257 72 : else if (!strcmp(method, "addNetwork"))
258 6 : reply = wpas_dbus_iface_add_network(message, wpa_s);
259 66 : else if (!strcmp(method, "removeNetwork"))
260 10 : reply = wpas_dbus_iface_remove_network(message, wpa_s);
261 56 : else if (!strcmp(method, "selectNetwork"))
262 7 : reply = wpas_dbus_iface_select_network(message, wpa_s);
263 49 : else if (!strcmp(method, "capabilities"))
264 2 : reply = wpas_dbus_iface_capabilities(message, wpa_s);
265 47 : else if (!strcmp(method, "disconnect"))
266 2 : reply = wpas_dbus_iface_disconnect(message, wpa_s);
267 45 : else if (!strcmp(method, "setAPScan"))
268 3 : reply = wpas_dbus_iface_set_ap_scan(message, wpa_s);
269 42 : else if (!strcmp(method, "setSmartcardModules"))
270 10 : reply = wpas_dbus_iface_set_smartcard_modules(message,
271 : wpa_s);
272 32 : else if (!strcmp(method, "state"))
273 1 : reply = wpas_dbus_iface_get_state(message, wpa_s);
274 31 : else if (!strcmp(method, "scanning"))
275 1 : reply = wpas_dbus_iface_get_scanning(message, wpa_s);
276 : #ifndef CONFIG_NO_CONFIG_BLOBS
277 30 : else if (!strcmp(method, "setBlobs"))
278 8 : reply = wpas_dbus_iface_set_blobs(message, wpa_s);
279 22 : else if (!strcmp(method, "removeBlobs"))
280 5 : reply = wpas_dbus_iface_remove_blobs(message, wpa_s);
281 : #endif /* CONFIG_NO_CONFIG_BLOBS */
282 : #ifdef CONFIG_WPS
283 17 : else if (os_strcmp(method, "wpsPbc") == 0)
284 5 : reply = wpas_dbus_iface_wps_pbc(message, wpa_s);
285 12 : else if (os_strcmp(method, "wpsPin") == 0)
286 5 : reply = wpas_dbus_iface_wps_pin(message, wpa_s);
287 7 : else if (os_strcmp(method, "wpsReg") == 0)
288 4 : reply = wpas_dbus_iface_wps_reg(message, wpa_s);
289 : #endif /* CONFIG_WPS */
290 3 : else if (os_strcmp(method, "flush") == 0)
291 3 : reply = wpas_dbus_iface_flush(message, wpa_s);
292 : }
293 :
294 : /* If the message was handled, send back the reply */
295 : out:
296 140 : if (reply) {
297 105 : if (!dbus_message_get_no_reply(message))
298 105 : dbus_connection_send(connection, reply, NULL);
299 105 : dbus_message_unref(reply);
300 : }
301 :
302 140 : os_free(iface_obj_path);
303 140 : os_free(network);
304 140 : os_free(bssid);
305 140 : return reply ? DBUS_HANDLER_RESULT_HANDLED :
306 : DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
307 : }
308 :
309 :
310 : /**
311 : * wpas_message_handler - dispatch incoming dbus messages
312 : * @connection: connection to the system message bus
313 : * @message: an incoming dbus message
314 : * @user_data: a pointer to a dbus control interface data structure
315 : * Returns: whether or not the message was handled
316 : *
317 : * This function dispatches all incoming dbus messages to the correct
318 : * handlers, depending on what the message's target object path is,
319 : * and what the method call is.
320 : */
321 56 : static DBusHandlerResult wpas_message_handler(DBusConnection *connection,
322 : DBusMessage *message, void *user_data)
323 : {
324 56 : struct wpas_dbus_priv *ctrl_iface = user_data;
325 : const char *method;
326 : const char *path;
327 : const char *msg_interface;
328 56 : DBusMessage *reply = NULL;
329 :
330 56 : method = dbus_message_get_member(message);
331 56 : path = dbus_message_get_path(message);
332 56 : msg_interface = dbus_message_get_interface(message);
333 56 : if (!method || !path || !ctrl_iface || !msg_interface)
334 0 : return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
335 :
336 56 : wpa_printf(MSG_MSGDUMP, "dbus[old]: %s.%s (%s) [%s]",
337 : msg_interface, method, path,
338 : dbus_message_get_signature(message));
339 :
340 : /* Validate the method interface */
341 56 : if (strcmp(msg_interface, WPAS_DBUS_INTERFACE) != 0)
342 17 : return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
343 :
344 39 : if (!strcmp(path, WPAS_DBUS_PATH)) {
345 : /* dispatch methods against our global dbus interface here */
346 39 : if (!strcmp(method, "addInterface")) {
347 13 : reply = wpas_dbus_global_add_interface(
348 : message, ctrl_iface->global);
349 26 : } else if (!strcmp(method, "removeInterface")) {
350 3 : reply = wpas_dbus_global_remove_interface(
351 : message, ctrl_iface->global);
352 23 : } else if (!strcmp(method, "getInterface")) {
353 20 : reply = wpas_dbus_global_get_interface(
354 : message, ctrl_iface->global);
355 3 : } else if (!strcmp(method, "setDebugParams")) {
356 3 : reply = wpas_dbus_global_set_debugparams(
357 : message, ctrl_iface->global);
358 : }
359 : }
360 :
361 : /* If the message was handled, send back the reply */
362 39 : if (reply) {
363 39 : if (!dbus_message_get_no_reply(message))
364 39 : dbus_connection_send(connection, reply, NULL);
365 39 : dbus_message_unref(reply);
366 : }
367 :
368 39 : return reply ? DBUS_HANDLER_RESULT_HANDLED :
369 : DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
370 : }
371 :
372 :
373 : /**
374 : * wpa_supplicant_dbus_notify_scan_results - Send a scan results signal
375 : * @wpa_s: %wpa_supplicant network interface data
376 : * Returns: 0 on success, -1 on failure
377 : *
378 : * Notify listeners that this interface has updated scan results.
379 : */
380 3600 : void wpa_supplicant_dbus_notify_scan_results(struct wpa_supplicant *wpa_s)
381 : {
382 3600 : struct wpas_dbus_priv *iface = wpa_s->global->dbus;
383 : DBusMessage *_signal;
384 :
385 : /* Do nothing if the control interface is not turned on */
386 3600 : if (iface == NULL || !wpa_s->dbus_path)
387 1729 : return;
388 :
389 1871 : _signal = dbus_message_new_signal(wpa_s->dbus_path,
390 : WPAS_DBUS_IFACE_INTERFACE,
391 : "ScanResultsAvailable");
392 1871 : if (_signal == NULL) {
393 0 : wpa_printf(MSG_ERROR,
394 : "dbus: Not enough memory to send scan results signal");
395 0 : return;
396 : }
397 1871 : dbus_connection_send(iface->con, _signal, NULL);
398 1871 : dbus_message_unref(_signal);
399 : }
400 :
401 :
402 : /**
403 : * wpa_supplicant_dbus_notify_state_change - Send a state change signal
404 : * @wpa_s: %wpa_supplicant network interface data
405 : * @new_state: new state wpa_supplicant is entering
406 : * @old_state: old state wpa_supplicant is leaving
407 : * Returns: 0 on success, -1 on failure
408 : *
409 : * Notify listeners that wpa_supplicant has changed state
410 : */
411 24339 : void wpa_supplicant_dbus_notify_state_change(struct wpa_supplicant *wpa_s,
412 : enum wpa_states new_state,
413 : enum wpa_states old_state)
414 : {
415 : struct wpas_dbus_priv *iface;
416 24339 : DBusMessage *_signal = NULL;
417 : const char *new_state_str, *old_state_str;
418 :
419 24339 : if (wpa_s->dbus_path == NULL)
420 15198 : return; /* Skip signal since D-Bus setup is not yet ready */
421 :
422 : /* Do nothing if the control interface is not turned on */
423 16740 : if (wpa_s->global == NULL)
424 0 : return;
425 16740 : iface = wpa_s->global->dbus;
426 16740 : if (iface == NULL)
427 0 : return;
428 :
429 : /* Only send signal if state really changed */
430 16740 : if (new_state == old_state)
431 0 : return;
432 :
433 16740 : _signal = dbus_message_new_signal(wpa_s->dbus_path,
434 : WPAS_DBUS_IFACE_INTERFACE,
435 : "StateChange");
436 16740 : if (_signal == NULL) {
437 0 : wpa_printf(MSG_ERROR,
438 : "dbus: %s: could not create dbus signal; likely out of memory",
439 : __func__);
440 0 : return;
441 : }
442 :
443 16740 : new_state_str = wpa_supplicant_state_txt(new_state);
444 16740 : old_state_str = wpa_supplicant_state_txt(old_state);
445 :
446 16740 : if (!dbus_message_append_args(_signal,
447 : DBUS_TYPE_STRING, &new_state_str,
448 : DBUS_TYPE_STRING, &old_state_str,
449 : DBUS_TYPE_INVALID)) {
450 0 : wpa_printf(MSG_ERROR,
451 : "dbus: %s: Not enough memory to construct state change signal",
452 : __func__);
453 0 : goto out;
454 : }
455 :
456 16740 : dbus_connection_send(iface->con, _signal, NULL);
457 :
458 : out:
459 16740 : dbus_message_unref(_signal);
460 : }
461 :
462 :
463 : /**
464 : * wpa_supplicant_dbus_notify_scanning - send scanning status
465 : * @wpa_s: %wpa_supplicant network interface data
466 : * Returns: 0 on success, -1 on failure
467 : *
468 : * Notify listeners of interface scanning state changes
469 : */
470 7434 : void wpa_supplicant_dbus_notify_scanning(struct wpa_supplicant *wpa_s)
471 : {
472 7434 : struct wpas_dbus_priv *iface = wpa_s->global->dbus;
473 : DBusMessage *_signal;
474 7434 : dbus_bool_t scanning = wpa_s->scanning ? TRUE : FALSE;
475 :
476 : /* Do nothing if the control interface is not turned on */
477 7434 : if (iface == NULL || !wpa_s->dbus_path)
478 6860 : return;
479 :
480 4004 : _signal = dbus_message_new_signal(wpa_s->dbus_path,
481 : WPAS_DBUS_IFACE_INTERFACE,
482 : "Scanning");
483 4004 : if (_signal == NULL) {
484 0 : wpa_printf(MSG_ERROR,
485 : "dbus: Not enough memory to send scan results signal");
486 0 : return;
487 : }
488 :
489 4004 : if (dbus_message_append_args(_signal,
490 : DBUS_TYPE_BOOLEAN, &scanning,
491 : DBUS_TYPE_INVALID)) {
492 4004 : dbus_connection_send(iface->con, _signal, NULL);
493 : } else {
494 0 : wpa_printf(MSG_ERROR,
495 : "dbus: Not enough memory to construct signal");
496 : }
497 4004 : dbus_message_unref(_signal);
498 : }
499 :
500 :
501 : #ifdef CONFIG_WPS
502 11 : void wpa_supplicant_dbus_notify_wps_cred(struct wpa_supplicant *wpa_s,
503 : const struct wps_credential *cred)
504 : {
505 : struct wpas_dbus_priv *iface;
506 11 : DBusMessage *_signal = NULL;
507 :
508 : /* Do nothing if the control interface is not turned on */
509 11 : if (wpa_s->global == NULL)
510 0 : return;
511 11 : iface = wpa_s->global->dbus;
512 11 : if (iface == NULL || !wpa_s->dbus_path)
513 0 : return;
514 :
515 11 : _signal = dbus_message_new_signal(wpa_s->dbus_path,
516 : WPAS_DBUS_IFACE_INTERFACE,
517 : "WpsCred");
518 11 : if (_signal == NULL) {
519 0 : wpa_printf(MSG_ERROR,
520 : "dbus: %s: Could not create dbus signal; likely out of memory",
521 : __func__);
522 0 : return;
523 : }
524 :
525 11 : if (!dbus_message_append_args(_signal,
526 : DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE,
527 : &cred->cred_attr, cred->cred_attr_len,
528 : DBUS_TYPE_INVALID)) {
529 0 : wpa_printf(MSG_ERROR,
530 : "dbus: %s: Not enough memory to construct signal",
531 : __func__);
532 0 : goto out;
533 : }
534 :
535 11 : dbus_connection_send(iface->con, _signal, NULL);
536 :
537 : out:
538 11 : dbus_message_unref(_signal);
539 : }
540 : #else /* CONFIG_WPS */
541 : void wpa_supplicant_dbus_notify_wps_cred(struct wpa_supplicant *wpa_s,
542 : const struct wps_credential *cred)
543 : {
544 : }
545 : #endif /* CONFIG_WPS */
546 :
547 582 : void wpa_supplicant_dbus_notify_certification(struct wpa_supplicant *wpa_s,
548 : int depth, const char *subject,
549 : const char *cert_hash,
550 : const struct wpabuf *cert)
551 : {
552 : struct wpas_dbus_priv *iface;
553 582 : DBusMessage *_signal = NULL;
554 : const char *hash;
555 : const char *cert_hex;
556 : int cert_hex_len;
557 :
558 : /* Do nothing if the control interface is not turned on */
559 582 : if (wpa_s->global == NULL)
560 59 : return;
561 582 : iface = wpa_s->global->dbus;
562 582 : if (iface == NULL || !wpa_s->dbus_path)
563 59 : return;
564 :
565 523 : _signal = dbus_message_new_signal(wpa_s->dbus_path,
566 : WPAS_DBUS_IFACE_INTERFACE,
567 : "Certification");
568 523 : if (_signal == NULL) {
569 0 : wpa_printf(MSG_ERROR,
570 : "dbus: %s: Could not create dbus signal; likely out of memory",
571 : __func__);
572 0 : return;
573 : }
574 :
575 523 : hash = cert_hash ? cert_hash : "";
576 523 : cert_hex = cert ? wpabuf_head(cert) : "";
577 523 : cert_hex_len = cert ? wpabuf_len(cert) : 0;
578 :
579 523 : if (!dbus_message_append_args(_signal,
580 : DBUS_TYPE_INT32, &depth,
581 : DBUS_TYPE_STRING, &subject,
582 : DBUS_TYPE_STRING, &hash,
583 : DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE,
584 : &cert_hex, cert_hex_len,
585 : DBUS_TYPE_INVALID)) {
586 0 : wpa_printf(MSG_ERROR,
587 : "dbus: %s: Not enough memory to construct signal",
588 : __func__);
589 0 : goto out;
590 : }
591 :
592 523 : dbus_connection_send(iface->con, _signal, NULL);
593 :
594 : out:
595 523 : dbus_message_unref(_signal);
596 :
597 : }
598 :
599 :
600 : /**
601 : * wpa_supplicant_dbus_ctrl_iface_init - Initialize dbus control interface
602 : * @global: Pointer to global data from wpa_supplicant_init()
603 : * Returns: 0 on success, -1 on failure
604 : *
605 : * Initialize the dbus control interface and start receiving commands from
606 : * external programs over the bus.
607 : */
608 6 : int wpa_supplicant_dbus_ctrl_iface_init(struct wpas_dbus_priv *iface)
609 : {
610 : DBusError error;
611 6 : int ret = -1;
612 6 : DBusObjectPathVTable wpas_vtable = {
613 : NULL, &wpas_message_handler, NULL, NULL, NULL, NULL
614 : };
615 :
616 : /* Register the message handler for the global dbus interface */
617 6 : if (!dbus_connection_register_object_path(iface->con,
618 : WPAS_DBUS_PATH, &wpas_vtable,
619 : iface)) {
620 0 : wpa_printf(MSG_ERROR, "dbus: Could not set up message handler");
621 0 : return -1;
622 : }
623 :
624 : /* Register our service with the message bus */
625 6 : dbus_error_init(&error);
626 6 : switch (dbus_bus_request_name(iface->con, WPAS_DBUS_SERVICE,
627 : 0, &error)) {
628 : case DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER:
629 6 : ret = 0;
630 6 : break;
631 : case DBUS_REQUEST_NAME_REPLY_EXISTS:
632 : case DBUS_REQUEST_NAME_REPLY_IN_QUEUE:
633 : case DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER:
634 0 : wpa_printf(MSG_ERROR,
635 : "dbus: Could not request service name: already registered");
636 0 : break;
637 : default:
638 0 : wpa_printf(MSG_ERROR,
639 : "dbus: Could not request service name: %s %s",
640 : error.name, error.message);
641 0 : break;
642 : }
643 6 : dbus_error_free(&error);
644 :
645 6 : if (ret != 0)
646 0 : return -1;
647 :
648 6 : wpa_printf(MSG_DEBUG, "Providing DBus service '" WPAS_DBUS_SERVICE
649 : "'.");
650 :
651 6 : return 0;
652 : }
653 :
654 :
655 : /**
656 : * wpas_dbus_register_new_iface - Register a new interface with dbus
657 : * @wpa_s: %wpa_supplicant interface description structure to register
658 : * Returns: 0 on success, -1 on error
659 : *
660 : * Registers a new interface with dbus and assigns it a dbus object path.
661 : */
662 567 : int wpas_dbus_register_iface(struct wpa_supplicant *wpa_s)
663 : {
664 567 : struct wpas_dbus_priv *ctrl_iface = wpa_s->global->dbus;
665 : DBusConnection * con;
666 : u32 next;
667 567 : DBusObjectPathVTable vtable = {
668 : NULL, &wpas_iface_message_handler, NULL, NULL, NULL, NULL
669 : };
670 :
671 : /* Do nothing if the control interface is not turned on */
672 567 : if (ctrl_iface == NULL)
673 417 : return 0;
674 :
675 150 : con = ctrl_iface->con;
676 150 : next = ctrl_iface->next_objid++;
677 :
678 : /* Create and set the interface's object path */
679 150 : wpa_s->dbus_path = os_zalloc(WPAS_DBUS_OBJECT_PATH_MAX);
680 150 : if (wpa_s->dbus_path == NULL)
681 1 : return -1;
682 149 : os_snprintf(wpa_s->dbus_path, WPAS_DBUS_OBJECT_PATH_MAX,
683 : WPAS_DBUS_PATH_INTERFACES "/%u",
684 : next);
685 :
686 : /* Register the message handler for the interface functions */
687 149 : if (!dbus_connection_register_fallback(con, wpa_s->dbus_path, &vtable,
688 : wpa_s)) {
689 0 : wpa_printf(MSG_ERROR,
690 : "dbus: Could not set up message handler for interface %s",
691 0 : wpa_s->ifname);
692 0 : return -1;
693 : }
694 :
695 149 : return 0;
696 : }
697 :
698 :
699 : /**
700 : * wpas_dbus_unregister_iface - Unregister an interface from dbus
701 : * @wpa_s: wpa_supplicant interface structure
702 : * Returns: 0 on success, -1 on failure
703 : *
704 : * Unregisters the interface with dbus
705 : */
706 567 : int wpas_dbus_unregister_iface(struct wpa_supplicant *wpa_s)
707 : {
708 : struct wpas_dbus_priv *ctrl_iface;
709 : DBusConnection *con;
710 :
711 : /* Do nothing if the control interface is not turned on */
712 567 : if (wpa_s == NULL || wpa_s->global == NULL)
713 0 : return 0;
714 567 : ctrl_iface = wpa_s->global->dbus;
715 567 : if (ctrl_iface == NULL || wpa_s->dbus_path == NULL)
716 418 : return 0;
717 :
718 149 : con = ctrl_iface->con;
719 149 : if (!dbus_connection_unregister_object_path(con, wpa_s->dbus_path))
720 0 : return -1;
721 :
722 149 : os_free(wpa_s->dbus_path);
723 149 : wpa_s->dbus_path = NULL;
724 :
725 149 : return 0;
726 : }
727 :
728 :
729 : /**
730 : * wpa_supplicant_get_iface_by_dbus_path - Get a new network interface
731 : * @global: Pointer to global data from wpa_supplicant_init()
732 : * @path: Pointer to a dbus object path representing an interface
733 : * Returns: Pointer to the interface or %NULL if not found
734 : */
735 141 : struct wpa_supplicant * wpa_supplicant_get_iface_by_dbus_path(
736 : struct wpa_global *global, const char *path)
737 : {
738 : struct wpa_supplicant *wpa_s;
739 :
740 142 : for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
741 141 : if (wpa_s->dbus_path && strcmp(wpa_s->dbus_path, path) == 0)
742 140 : return wpa_s;
743 : }
744 1 : return NULL;
745 : }
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