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[project/netifd.git] / wireless.c
1 /*
2 * netifd - network interface daemon
3 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
4 *
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
7 * as published by the Free Software Foundation
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15 /* The wireless configuration is projected on the following objects
16 *
17 * 1. wireless device
18 * 2. wireless interface
19 * 3. wireless vlan
20 * 4. wireless station
21 *
22 * A wireless device is a phy or simplified a wireless card.
23 * A wireless interface is a SSID on a phy.
24 * A wireless vlan can be assigned to a wireless interface. A wireless interface can
25 * have multiple vlans.
26 * A wireless station is a client connected to an wireless interface.
27 */
28
29 #include <signal.h>
30 #include "netifd.h"
31 #include "wireless.h"
32 #include "handler.h"
33 #include "ubus.h"
34
35 #define WIRELESS_SETUP_RETRY 3
36
37 struct vlist_tree wireless_devices;
38 struct avl_tree wireless_drivers;
39 static struct blob_buf b;
40 static int drv_fd;
41 static LIST_HEAD(handlers);
42 static bool handler_pending;
43
44 enum {
45 WDEV_ATTR_DISABLED,
46 WDEV_ATTR_RECONF,
47 WDEV_ATTR_SERIALIZE,
48 __WDEV_ATTR_MAX,
49 };
50
51 static const struct blobmsg_policy wdev_policy[__WDEV_ATTR_MAX] = {
52 [WDEV_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
53 [WDEV_ATTR_RECONF] = { .name = "reconf", .type = BLOBMSG_TYPE_BOOL },
54 [WDEV_ATTR_SERIALIZE] = { .name = "serialize", .type = BLOBMSG_TYPE_BOOL },
55 };
56
57 static const struct uci_blob_param_list wdev_param = {
58 .n_params = ARRAY_SIZE(wdev_policy),
59 .params = wdev_policy,
60 };
61
62 enum {
63 VIF_ATTR_DISABLED,
64 VIF_ATTR_NETWORK,
65 VIF_ATTR_NETWORK_VLAN,
66 VIF_ATTR_ISOLATE,
67 VIF_ATTR_MODE,
68 VIF_ATTR_PROXYARP,
69 VIF_ATTR_MCAST_TO_UCAST,
70 __VIF_ATTR_MAX,
71 };
72
73 static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
74 [VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
75 [VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
76 [VIF_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
77 [VIF_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
78 [VIF_ATTR_MODE] = { .name = "mode", .type = BLOBMSG_TYPE_STRING },
79 [VIF_ATTR_PROXYARP] = { .name = "proxy_arp", .type = BLOBMSG_TYPE_BOOL },
80 [VIF_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
81 };
82
83 static const struct uci_blob_param_list vif_param = {
84 .n_params = ARRAY_SIZE(vif_policy),
85 .params = vif_policy,
86 };
87
88 enum {
89 VLAN_ATTR_DISABLED,
90 VLAN_ATTR_NETWORK,
91 VLAN_ATTR_NETWORK_VLAN,
92 VLAN_ATTR_ISOLATE,
93 VLAN_ATTR_MCAST_TO_UCAST,
94 __VLAN_ATTR_MAX,
95 };
96
97 static const struct blobmsg_policy vlan_policy[__VLAN_ATTR_MAX] = {
98 [VLAN_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
99 [VLAN_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
100 [VLAN_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
101 [VLAN_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
102 [VLAN_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
103 };
104
105 static const struct uci_blob_param_list vlan_param = {
106 .n_params = ARRAY_SIZE(vlan_policy),
107 .params = vlan_policy,
108 };
109
110 enum {
111 STA_ATTR_DISABLED,
112 __STA_ATTR_MAX,
113 };
114
115 static const struct blobmsg_policy sta_policy[__STA_ATTR_MAX] = {
116 [STA_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
117 };
118
119 static const struct uci_blob_param_list station_param = {
120 .n_params = ARRAY_SIZE(sta_policy),
121 .params = sta_policy,
122 };
123
124 static void
125 wireless_handler_stop(struct wireless_device *wdev)
126 {
127 if (wdev->handler_pending) {
128 wdev->handler_pending = false;
129 list_del(&wdev->handler);
130 }
131 }
132
133 static void
134 put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
135 {
136 void *c = blobmsg_open_table(buf, name);
137 blob_put_raw(buf, blob_data(attr), blob_len(attr));
138 blobmsg_close_table(buf, c);
139 }
140
141 static void
142 vif_config_add_bridge(struct blob_buf *buf, struct blob_attr *networks, bool prepare)
143 {
144 struct interface *iface;
145 struct device *dev = NULL, *orig_dev;
146 struct blob_attr *cur;
147 const char *network;
148 size_t rem;
149
150 if (!networks)
151 return;
152
153 blobmsg_for_each_attr(cur, networks, rem) {
154 network = blobmsg_data(cur);
155
156 iface = vlist_find(&interfaces, network, iface, node);
157 if (!iface)
158 continue;
159
160 dev = iface->main_dev.dev;
161 if (!dev)
162 return;
163
164 if (!dev->hotplug_ops)
165 return;
166 }
167
168 if (!dev)
169 return;
170
171 orig_dev = dev;
172 if (dev->hotplug_ops && dev->hotplug_ops->prepare)
173 dev->hotplug_ops->prepare(dev, &dev);
174
175 if (!dev || !dev->type->bridge_capability)
176 return;
177
178 blobmsg_add_string(buf, "bridge", dev->ifname);
179 blobmsg_add_string(buf, "bridge-ifname", orig_dev->ifname);
180
181 if (dev->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST)
182 blobmsg_add_u8(buf, "multicast_to_unicast",
183 dev->settings.multicast_to_unicast);
184 }
185
186 static void
187 prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
188 {
189 struct wireless_interface *vif;
190 struct wireless_vlan *vlan;
191 struct wireless_station *sta;
192 void *l, *i, *j, *k;
193
194 blob_buf_init(&b, 0);
195 put_container(&b, wdev->config, "config");
196 if (wdev->data)
197 blobmsg_add_blob(&b, wdev->data);
198
199 l = blobmsg_open_table(&b, "interfaces");
200 vlist_for_each_element(&wdev->interfaces, vif, node) {
201 i = blobmsg_open_table(&b, vif->name);
202 vif_config_add_bridge(&b, vif->network, up);
203 put_container(&b, vif->config, "config");
204 if (vif->data)
205 blobmsg_add_blob(&b, vif->data);
206
207 j = blobmsg_open_table(&b, "vlans");
208 vlist_for_each_element(&wdev->vlans, vlan, node) {
209 if (strcmp(vlan->vif, vif->name))
210 continue;
211 k = blobmsg_open_table(&b, vlan->name);
212 vif_config_add_bridge(&b, vlan->network, up);
213 put_container(&b, vlan->config, "config");
214 if (vlan->data)
215 blobmsg_add_blob(&b, vlan->data);
216 blobmsg_close_table(&b, k);
217 }
218 blobmsg_close_table(&b, j);
219
220 j = blobmsg_open_table(&b, "stas");
221 vlist_for_each_element(&wdev->stations, sta, node) {
222 if (strcmp(sta->vif, vif->name))
223 continue;
224 k = blobmsg_open_table(&b, sta->name);
225 put_container(&b, sta->config, "config");
226 if (sta->data)
227 blobmsg_add_blob(&b, sta->data);
228 blobmsg_close_table(&b, k);
229 }
230 blobmsg_close_table(&b, j);
231 blobmsg_close_table(&b, i);
232 }
233 blobmsg_close_table(&b, l);
234
235 }
236
237 static bool
238 wireless_process_check(struct wireless_process *proc)
239 {
240 return check_pid_path(proc->pid, proc->exe);
241 }
242
243 static void
244 wireless_complete_kill_request(struct wireless_device *wdev)
245 {
246 if (!wdev->kill_request)
247 return;
248
249 ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
250 free(wdev->kill_request);
251 wdev->kill_request = NULL;
252 }
253
254 static void
255 wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
256 {
257 D(WIRELESS, "Wireless device '%s' free pid %d\n", wdev->name, proc->pid);
258 list_del(&proc->list);
259 free(proc);
260
261 if (list_empty(&wdev->script_proc))
262 wireless_complete_kill_request(wdev);
263 }
264
265 static void
266 wireless_close_script_proc_fd(struct wireless_device *wdev)
267 {
268 if (wdev->script_proc_fd.fd < 0)
269 return;
270
271 uloop_fd_delete(&wdev->script_proc_fd);
272 close(wdev->script_proc_fd.fd);
273 wdev->script_proc_fd.fd = -1;
274 }
275
276 static void
277 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
278 {
279 struct wireless_process *proc, *tmp;
280
281 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
282 bool check = wireless_process_check(proc);
283
284 if (check && !proc->keep) {
285 D(WIRELESS, "Wireless device '%s' kill pid %d\n", wdev->name, proc->pid);
286 kill(proc->pid, signal);
287 }
288
289 if (free || !check)
290 wireless_process_free(wdev, proc);
291 }
292
293 if (free)
294 wireless_close_script_proc_fd(wdev);
295 }
296
297 static void
298 wireless_device_free_state(struct wireless_device *wdev)
299 {
300 struct wireless_interface *vif;
301 struct wireless_vlan *vlan;
302 struct wireless_station *sta;
303
304 wireless_handler_stop(wdev);
305 uloop_timeout_cancel(&wdev->script_check);
306 uloop_timeout_cancel(&wdev->timeout);
307 wireless_complete_kill_request(wdev);
308 free(wdev->data);
309 wdev->data = NULL;
310 vlist_for_each_element(&wdev->interfaces, vif, node) {
311 free(vif->data);
312 vif->data = NULL;
313 vif->ifname = NULL;
314 }
315 vlist_for_each_element(&wdev->vlans, vlan, node) {
316 free(vlan->data);
317 vlan->data = NULL;
318 vlan->ifname = NULL;
319 }
320 vlist_for_each_element(&wdev->stations, sta, node) {
321 free(sta->data);
322 sta->data = NULL;
323 }
324 }
325
326 static void wireless_device_set_mcast_to_unicast(struct device *dev, int val)
327 {
328 if (val < 0) {
329 dev->settings.flags &= ~DEV_OPT_MULTICAST_TO_UNICAST;
330 return;
331 }
332
333 dev->settings.multicast_to_unicast = !!val;
334 dev->settings.flags |= DEV_OPT_MULTICAST_TO_UNICAST;
335 }
336
337 static void wireless_interface_handle_link(struct wireless_interface *vif, const char *ifname, bool up)
338 {
339 struct interface *iface;
340 struct blob_attr *cur;
341 const char *network;
342 size_t rem;
343
344 if (!vif->network || !vif->ifname)
345 return;
346
347 if (!ifname)
348 ifname = vif->ifname;
349
350 if (up) {
351 struct device *dev = __device_get(ifname, 2, false);
352
353 if (dev && !strcmp(ifname, vif->ifname)) {
354 dev->wireless_isolate = vif->isolate;
355 dev->wireless_proxyarp = vif->proxyarp;
356 dev->wireless = true;
357 dev->wireless_ap = vif->ap_mode;
358 wireless_device_set_mcast_to_unicast(dev, vif->multicast_to_unicast);
359 dev->bpdu_filter = dev->wireless_ap;
360 }
361 }
362
363 blobmsg_for_each_attr(cur, vif->network, rem) {
364 network = blobmsg_data(cur);
365
366 iface = vlist_find(&interfaces, network, iface, node);
367 if (!iface)
368 continue;
369
370 interface_handle_link(iface, ifname, vif->network_vlan, up, true);
371 }
372 }
373
374 static void wireless_vlan_handle_link(struct wireless_vlan *vlan, bool up)
375 {
376 struct interface *iface;
377 struct blob_attr *cur;
378 const char *network;
379 size_t rem;
380
381 if (!vlan->network || !vlan->ifname)
382 return;
383
384 if (up) {
385 struct device *dev = device_get(vlan->ifname, 2);
386 if (dev) {
387 dev->wireless_isolate = vlan->isolate;
388 dev->wireless = true;
389 dev->wireless_ap = true;
390 dev->bpdu_filter = true;
391 wireless_device_set_mcast_to_unicast(dev, vlan->multicast_to_unicast);
392 }
393 }
394
395 blobmsg_for_each_attr(cur, vlan->network, rem) {
396 network = blobmsg_data(cur);
397
398 iface = vlist_find(&interfaces, network, iface, node);
399 if (!iface)
400 continue;
401
402 interface_handle_link(iface, vlan->ifname, vlan->network_vlan, up, true);
403 }
404 }
405
406 static void
407 wireless_device_setup_cancel(struct wireless_device *wdev)
408 {
409 if (wdev->cancel)
410 return;
411
412 wireless_handler_stop(wdev);
413 D(WIRELESS, "Cancel wireless device '%s' setup\n", wdev->name);
414 wdev->cancel = true;
415 uloop_timeout_set(&wdev->timeout, 10 * 1000);
416 }
417
418 static void
419 wireless_device_run_handler(struct wireless_device *wdev, bool up)
420 {
421 const char *action = up ? "setup" : "teardown";
422 const char *argv[6];
423 char *config;
424 int i = 0;
425 int fds[2] = { -1, -1 };
426
427 wireless_handler_stop(wdev);
428
429 if (handler_pending && wdev->serialize) {
430 wdev->handler_action = up;
431 wdev->handler_pending = true;
432 list_add_tail(&wdev->handler, &handlers);
433 return;
434 }
435 if (wdev->serialize)
436 handler_pending = true;
437
438 D(WIRELESS, "Wireless device '%s' run %s handler\n", wdev->name, action);
439 if (!up && wdev->prev_config) {
440 config = blobmsg_format_json(wdev->prev_config, true);
441 free(wdev->prev_config);
442 wdev->prev_config = NULL;
443 } else {
444 prepare_config(wdev, &b, up);
445 config = blobmsg_format_json(b.head, true);
446 }
447
448 argv[i++] = wdev->drv->script;
449 argv[i++] = wdev->drv->name;
450 argv[i++] = action;
451 argv[i++] = wdev->name;
452 argv[i++] = config;
453 argv[i] = NULL;
454
455 if (up && pipe(fds) == 0) {
456 if (wdev->script_proc_fd.fd >= 0)
457 wireless_close_script_proc_fd(wdev);
458
459 wdev->script_proc_fd.fd = fds[0];
460 uloop_fd_add(&wdev->script_proc_fd,
461 ULOOP_READ | ULOOP_EDGE_TRIGGER);
462 }
463
464 netifd_start_process(argv, NULL, &wdev->script_task);
465
466 if (fds[1] >= 0)
467 close(fds[1]);
468
469 free(config);
470 }
471
472 static void
473 wireless_handler_next(void)
474 {
475 struct wireless_device *wdev;
476
477 if (handler_pending)
478 return;
479 if (list_empty(&handlers))
480 return;
481 wdev = list_first_entry(&handlers, struct wireless_device, handler);
482 list_del(&wdev->handler);
483 wdev->handler_pending = false;
484 wireless_device_run_handler(wdev, wdev->handler_action);
485 }
486
487 static void
488 __wireless_device_set_up(struct wireless_device *wdev, int force)
489 {
490 if (wdev->disabled)
491 return;
492
493 if (wdev->retry_setup_failed)
494 return;
495
496 if (!wdev->autostart)
497 return;
498
499 if (!force && (wdev->state != IFS_DOWN || config_init))
500 return;
501
502 free(wdev->prev_config);
503 wdev->prev_config = NULL;
504 wdev->state = IFS_SETUP;
505 wireless_device_run_handler(wdev, true);
506 }
507
508 static void
509 wireless_device_free(struct wireless_device *wdev)
510 {
511 wireless_handler_stop(wdev);
512 vlist_flush_all(&wdev->interfaces);
513 vlist_flush_all(&wdev->vlans);
514 vlist_flush_all(&wdev->stations);
515 avl_delete(&wireless_devices.avl, &wdev->node.avl);
516 free(wdev->config);
517 free(wdev->prev_config);
518 free(wdev);
519 }
520
521 static void
522 wdev_handle_config_change(struct wireless_device *wdev)
523 {
524 enum interface_config_state state = wdev->config_state;
525
526 switch(state) {
527 case IFC_RELOAD:
528 wdev->retry = WIRELESS_SETUP_RETRY;
529 wdev->retry_setup_failed = false;
530 fallthrough;
531 case IFC_NORMAL:
532 __wireless_device_set_up(wdev, 0);
533
534 wdev->config_state = IFC_NORMAL;
535 break;
536 case IFC_REMOVE:
537 wireless_device_free(wdev);
538 break;
539 }
540 }
541
542 static void
543 wireless_device_mark_down(struct wireless_device *wdev)
544 {
545 struct wireless_interface *vif;
546 struct wireless_vlan *vlan;
547
548 netifd_log_message(L_NOTICE, "Wireless device '%s' is now down\n", wdev->name);
549
550 vlist_for_each_element(&wdev->vlans, vlan, node)
551 wireless_vlan_handle_link(vlan, false);
552
553 vlist_for_each_element(&wdev->interfaces, vif, node)
554 wireless_interface_handle_link(vif, NULL, false);
555
556 wireless_process_kill_all(wdev, SIGTERM, true);
557
558 wdev->cancel = false;
559 wdev->state = IFS_DOWN;
560 wireless_device_free_state(wdev);
561 wdev_handle_config_change(wdev);
562 }
563
564 /* timeout callback to protect the tear down */
565 static void
566 wireless_device_setup_timeout(struct uloop_timeout *timeout)
567 {
568 struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
569
570 if (wdev->handler_pending) {
571 wdev->handler_pending = false;
572 list_del(&wdev->handler);
573 }
574 netifd_kill_process(&wdev->script_task);
575 wdev->script_task.cb(&wdev->script_task, -1);
576 wireless_device_mark_down(wdev);
577 }
578
579 void
580 wireless_device_set_up(struct wireless_device *wdev)
581 {
582 wdev->retry = WIRELESS_SETUP_RETRY;
583 wdev->autostart = true;
584 __wireless_device_set_up(wdev, 0);
585 }
586
587 void
588 wireless_device_reconf(struct wireless_device *wdev)
589 {
590 wdev->retry = WIRELESS_SETUP_RETRY;
591 wdev->autostart = true;
592 __wireless_device_set_up(wdev, wdev->reconf && (wdev->state == IFS_UP));
593 }
594
595 static void
596 __wireless_device_set_down(struct wireless_device *wdev)
597 {
598 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
599 return;
600
601 if (wdev->script_task.uloop.pending) {
602 wireless_device_setup_cancel(wdev);
603 return;
604 }
605
606 wdev->state = IFS_TEARDOWN;
607 wireless_device_run_handler(wdev, false);
608 }
609
610 /* ubus callback network.wireless.notify, command = up */
611 static void
612 wireless_device_mark_up(struct wireless_device *wdev)
613 {
614 struct wireless_interface *vif;
615 struct wireless_vlan *vlan;
616
617 if (wdev->cancel) {
618 wdev->cancel = false;
619 __wireless_device_set_down(wdev);
620 return;
621 }
622
623 netifd_log_message(L_NOTICE, "Wireless device '%s' is now up\n", wdev->name);
624 wdev->retry = WIRELESS_SETUP_RETRY;
625 wdev->state = IFS_UP;
626 vlist_for_each_element(&wdev->interfaces, vif, node)
627 wireless_interface_handle_link(vif, NULL, true);
628 vlist_for_each_element(&wdev->vlans, vlan, node)
629 wireless_vlan_handle_link(vlan, true);
630 }
631
632 static void
633 wireless_device_retry_setup(struct wireless_device *wdev)
634 {
635 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
636 return;
637
638 netifd_log_message(wdev->retry ? L_WARNING : L_CRIT,
639 "Wireless device '%s' setup failed, retry=%d\n",
640 wdev->name, wdev->retry);
641 if (--wdev->retry < 0)
642 wdev->retry_setup_failed = true;
643
644 __wireless_device_set_down(wdev);
645 }
646
647 static void
648 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
649 {
650 struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
651
652 switch (wdev->state) {
653 case IFS_SETUP:
654 wireless_device_retry_setup(wdev);
655 break;
656 case IFS_TEARDOWN:
657 wireless_device_mark_down(wdev);
658 break;
659 default:
660 break;
661 }
662
663 if (wdev->serialize) {
664 handler_pending = false;
665 wireless_handler_next();
666 }
667 }
668
669 void
670 wireless_device_set_down(struct wireless_device *wdev)
671 {
672 wdev->retry_setup_failed = false;
673 wdev->autostart = false;
674 __wireless_device_set_down(wdev);
675 }
676
677 static void
678 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
679 {
680 if (wdev->config_state != IFC_NORMAL)
681 return;
682
683 wdev->config_state = s;
684 if (wdev->state == IFS_DOWN)
685 wdev_handle_config_change(wdev);
686 else if (!wdev->reconf || wdev->state != IFS_UP)
687 __wireless_device_set_down(wdev);
688 }
689
690 static void
691 wdev_prepare_prev_config(struct wireless_device *wdev)
692 {
693 if (wdev->prev_config)
694 return;
695
696 prepare_config(wdev, &b, false);
697 wdev->prev_config = blob_memdup(b.head);
698 }
699
700 static void
701 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
702 {
703 struct blob_attr *new_config = wd_new->config;
704 bool disabled = wd_new->disabled;
705
706 wdev->reconf = wd_new->reconf;
707 wdev->serialize = wd_new->serialize;
708 free(wd_new);
709
710 wdev_prepare_prev_config(wdev);
711 if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled)
712 return;
713
714 D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
715 free(wdev->config);
716 wdev->config = blob_memdup(new_config);
717 wdev->disabled = disabled;
718 wdev_set_config_state(wdev, IFC_RELOAD);
719 }
720
721 static void
722 wdev_create(struct wireless_device *wdev)
723 {
724 wdev->retry = WIRELESS_SETUP_RETRY;
725 wdev->config = blob_memdup(wdev->config);
726 }
727
728 /* vlist update call for wireless device list */
729 static void
730 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
731 struct vlist_node *node_old)
732 {
733 struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
734 struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
735
736 if (wd_old && wd_new) {
737 D(WIRELESS, "Update wireless device '%s'\n", wd_old->name);
738 wdev_change_config(wd_old, wd_new);
739 } else if (wd_old) {
740 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
741 wdev_set_config_state(wd_old, IFC_REMOVE);
742 } else if (wd_new) {
743 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
744 wdev_create(wd_new);
745 }
746 }
747
748 /* wireless netifd script handler */
749 static void
750 wireless_add_handler(const char *script, const char *name, json_object *obj)
751 {
752 struct wireless_driver *drv;
753 char *name_str, *script_str;
754 json_object *dev_config_obj, *iface_config_obj, *vlan_config_obj, *station_config_obj;
755 struct uci_blob_param_list *dev_config, *iface_config, *vlan_config, *station_config;
756
757 dev_config_obj = json_get_field(obj, "device", json_type_array);
758 iface_config_obj = json_get_field(obj, "iface", json_type_array);
759 vlan_config_obj = json_get_field(obj, "vlan", json_type_array);
760 station_config_obj = json_get_field(obj, "station", json_type_array);
761
762 if (!dev_config_obj || !iface_config_obj || !vlan_config_obj || !station_config_obj)
763 return;
764
765 drv = calloc_a(sizeof(*drv),
766 &dev_config, sizeof(*dev_config) + sizeof(void *),
767 &iface_config, sizeof(*iface_config) + sizeof(void *),
768 &vlan_config, sizeof(*vlan_config) + sizeof(void *),
769 &station_config, sizeof(*station_config) + sizeof(void *),
770 &name_str, strlen(name) + 1,
771 &script_str, strlen(script) + 1);
772
773 drv->name = strcpy(name_str, name);
774 drv->script = strcpy(script_str, script);
775
776 dev_config->n_next = 1;
777 dev_config->next[0] = &wdev_param;
778 drv->device.config = dev_config;
779
780 iface_config->n_next = 1;
781 iface_config->next[0] = &vif_param;
782 drv->interface.config = iface_config;
783
784 vlan_config->n_next = 1;
785 vlan_config->next[0] = &vlan_param;
786 drv->vlan.config = vlan_config;
787
788 station_config->n_next = 1;
789 station_config->next[0] = &station_param;
790 drv->station.config = station_config;
791
792 drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
793 drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
794 drv->vlan.buf = netifd_handler_parse_config(drv->vlan.config, vlan_config_obj);
795 drv->station.buf = netifd_handler_parse_config(drv->station.config, station_config_obj);
796
797 drv->node.key = drv->name;
798 avl_insert(&wireless_drivers, &drv->node);
799 D(WIRELESS, "Add handler for script %s: %s\n", script, name);
800 }
801
802 void wireless_init(void)
803 {
804 vlist_init(&wireless_devices, avl_strcmp, wdev_update);
805 wireless_devices.keep_old = true;
806 wireless_devices.no_delete = true;
807
808 avl_init(&wireless_drivers, avl_strcmp, false, NULL);
809 drv_fd = netifd_open_subdir("wireless");
810 if (drv_fd < 0)
811 return;
812
813 netifd_init_script_handlers(drv_fd, wireless_add_handler);
814 }
815
816 /* parse blob config into the wireless interface object */
817 static void
818 wireless_interface_init_config(struct wireless_interface *vif)
819 {
820 struct blob_attr *tb[__VIF_ATTR_MAX];
821 struct blob_attr *cur;
822
823 vif->network = NULL;
824 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
825
826 if ((cur = tb[VIF_ATTR_NETWORK]))
827 vif->network = cur;
828
829 if ((cur = tb[VIF_ATTR_NETWORK_VLAN]))
830 vif->network_vlan = cur;
831
832 cur = tb[VIF_ATTR_MODE];
833 vif->ap_mode = cur && !strcmp(blobmsg_get_string(cur), "ap");
834
835 cur = tb[VIF_ATTR_ISOLATE];
836 vif->isolate = vif->ap_mode && cur && blobmsg_get_bool(cur);
837
838 cur = tb[VIF_ATTR_PROXYARP];
839 vif->proxyarp = vif->ap_mode && cur && blobmsg_get_bool(cur);
840
841 cur = tb[VIF_ATTR_MCAST_TO_UCAST];
842 vif->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
843 }
844
845 /* vlist update call for wireless interface list */
846 static void
847 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
848 struct vlist_node *node_old)
849 {
850 struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
851 struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
852 struct wireless_device *wdev;
853
854 if (vif_old)
855 wdev = vif_old->wdev;
856 else
857 wdev = vif_new->wdev;
858
859 if (vif_old && vif_new) {
860 free((void *) vif_old->section);
861 vif_old->section = strdup(vif_new->section);
862 if (blob_attr_equal(vif_old->config, vif_new->config)) {
863 free(vif_new);
864 return;
865 }
866
867 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
868 wireless_interface_handle_link(vif_old, NULL, false);
869 free(vif_old->config);
870 vif_old->config = blob_memdup(vif_new->config);
871 wireless_interface_init_config(vif_old);
872 free(vif_new);
873 } else if (vif_new) {
874 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
875 vif_new->section = strdup(vif_new->section);
876 vif_new->config = blob_memdup(vif_new->config);
877 wireless_interface_init_config(vif_new);
878 } else if (vif_old) {
879 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
880 wireless_interface_handle_link(vif_old, NULL, false);
881 free((void *) vif_old->section);
882 free(vif_old->config);
883 free(vif_old);
884 }
885
886 wdev_set_config_state(wdev, IFC_RELOAD);
887 }
888
889 /* parse blob config into the vlan object */
890 static void
891 wireless_vlan_init_config(struct wireless_vlan *vlan)
892 {
893 struct blob_attr *tb[__VLAN_ATTR_MAX];
894 struct blob_attr *cur;
895
896 vlan->network = NULL;
897 blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(vlan->config), blob_len(vlan->config));
898
899 if ((cur = tb[VLAN_ATTR_NETWORK]))
900 vlan->network = cur;
901
902 if ((cur = tb[VLAN_ATTR_NETWORK_VLAN]))
903 vlan->network_vlan = cur;
904
905 cur = tb[VLAN_ATTR_ISOLATE];
906 if (cur)
907 vlan->isolate = blobmsg_get_bool(cur);
908
909 cur = tb[VLAN_ATTR_MCAST_TO_UCAST];
910 vlan->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
911 }
912
913 /* vlist update call for vlan list */
914 static void
915 vlan_update(struct vlist_tree *tree, struct vlist_node *node_new,
916 struct vlist_node *node_old)
917 {
918 struct wireless_vlan *vlan_old = container_of(node_old, struct wireless_vlan, node);
919 struct wireless_vlan *vlan_new = container_of(node_new, struct wireless_vlan, node);
920 struct wireless_device *wdev;
921
922 if (vlan_old)
923 wdev = vlan_old->wdev;
924 else
925 wdev = vlan_new->wdev;
926
927 if (vlan_old && vlan_new) {
928 free((void *) vlan_old->section);
929 vlan_old->section = strdup(vlan_new->section);
930 if (blob_attr_equal(vlan_old->config, vlan_new->config)) {
931 free(vlan_new);
932 return;
933 }
934
935 D(WIRELESS, "Update wireless vlan %s on device %s\n", vlan_new->name, wdev->name);
936 wireless_vlan_handle_link(vlan_old, false);
937 free(vlan_old->config);
938 vlan_old->config = blob_memdup(vlan_new->config);
939 vlan_old->isolate = vlan_new->isolate;
940 wireless_vlan_init_config(vlan_old);
941 free(vlan_new);
942 } else if (vlan_new) {
943 D(WIRELESS, "Create new wireless vlan %s on device %s\n", vlan_new->name, wdev->name);
944 vlan_new->section = strdup(vlan_new->section);
945 vlan_new->config = blob_memdup(vlan_new->config);
946 wireless_vlan_init_config(vlan_new);
947 } else if (vlan_old) {
948 D(WIRELESS, "Delete wireless interface %s on device %s\n", vlan_old->name, wdev->name);
949 wireless_vlan_handle_link(vlan_old, false);
950 free((void *) vlan_old->section);
951 free(vlan_old->config);
952 free(vlan_old);
953 }
954
955 wdev_set_config_state(wdev, IFC_RELOAD);
956 }
957
958 /* vlist update call for station list */
959 static void
960 station_update(struct vlist_tree *tree, struct vlist_node *node_new,
961 struct vlist_node *node_old)
962 {
963 struct wireless_station *sta_old = container_of(node_old, struct wireless_station, node);
964 struct wireless_station *sta_new = container_of(node_new, struct wireless_station, node);
965 struct wireless_device *wdev;
966
967 if (sta_old)
968 wdev = sta_old->wdev;
969 else
970 wdev = sta_new->wdev;
971
972 if (sta_old && sta_new) {
973 free((void *) sta_old->section);
974 sta_old->section = strdup(sta_new->section);
975 if (blob_attr_equal(sta_old->config, sta_new->config)) {
976 free(sta_new);
977 return;
978 }
979
980 D(WIRELESS, "Update wireless station %s on device %s\n", sta_new->name, wdev->name);
981 free(sta_old->config);
982 sta_old->config = blob_memdup(sta_new->config);
983 free(sta_new);
984 } else if (sta_new) {
985 D(WIRELESS, "Create new wireless station %s on device %s\n", sta_new->name, wdev->name);
986 sta_new->section = strdup(sta_new->section);
987 sta_new->config = blob_memdup(sta_new->config);
988 } else if (sta_old) {
989 D(WIRELESS, "Delete wireless station %s on device %s\n", sta_old->name, wdev->name);
990 free((void *) sta_old->section);
991 free(sta_old->config);
992 free(sta_old);
993 }
994
995 wdev_set_config_state(wdev, IFC_RELOAD);
996 }
997
998 static void
999 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
1000 {
1001 struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
1002 char buf[128];
1003
1004 while (1) {
1005 int b = read(fd->fd, buf, sizeof(buf));
1006 if (b < 0) {
1007 if (errno == EINTR)
1008 continue;
1009
1010 if (errno == EAGAIN)
1011 return;
1012
1013 goto done;
1014 }
1015
1016 if (!b)
1017 goto done;
1018 }
1019
1020 done:
1021 uloop_timeout_set(&wdev->script_check, 0);
1022 wireless_close_script_proc_fd(wdev);
1023 }
1024
1025 /* watchdog and garbage collector for wireless processes.
1026 * It cleans up terminated processes. If a process is a requirement for the wireless device, it retries the setup */
1027 static void
1028 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
1029 {
1030 struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
1031 struct wireless_process *proc, *tmp;
1032 bool restart = false;
1033
1034 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
1035 if (wireless_process_check(proc))
1036 continue;
1037
1038 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
1039 if (proc->required)
1040 restart = true;
1041
1042 wireless_process_free(wdev, proc);
1043 }
1044
1045 if (restart)
1046 wireless_device_retry_setup(wdev);
1047 else
1048 uloop_timeout_set(&wdev->script_check, 1000);
1049 }
1050
1051 /* creates a wireless device object. Called by config */
1052 void
1053 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
1054 {
1055 struct wireless_device *wdev;
1056 char *name_buf;
1057 struct blob_attr *tb[__WDEV_ATTR_MAX];
1058 struct blob_attr *cur;
1059
1060 blobmsg_parse(wdev_policy, __WDEV_ATTR_MAX, tb, blob_data(data), blob_len(data));
1061
1062 wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
1063
1064 cur = tb[WDEV_ATTR_DISABLED];
1065 wdev->disabled = cur && blobmsg_get_bool(cur);
1066
1067 wdev->drv = drv;
1068 wdev->state = IFS_DOWN;
1069 wdev->config_state = IFC_NORMAL;
1070 wdev->name = strcpy(name_buf, name);
1071 wdev->config = data;
1072 wdev->handler_pending = false;
1073
1074 cur = tb[WDEV_ATTR_SERIALIZE];
1075 wdev->serialize = cur && blobmsg_get_bool(cur);
1076
1077 cur = tb[WDEV_ATTR_RECONF];
1078 wdev->reconf = cur && blobmsg_get_bool(cur);
1079
1080 wdev->retry_setup_failed = false;
1081 wdev->autostart = true;
1082 INIT_LIST_HEAD(&wdev->script_proc);
1083 vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
1084 wdev->interfaces.keep_old = true;
1085 vlist_init(&wdev->vlans, avl_strcmp, vlan_update);
1086 wdev->vlans.keep_old = true;
1087 vlist_init(&wdev->stations, avl_strcmp, station_update);
1088 wdev->stations.keep_old = true;
1089
1090 wdev->timeout.cb = wireless_device_setup_timeout;
1091 wdev->script_task.cb = wireless_device_script_task_cb;
1092 wdev->script_task.dir_fd = drv_fd;
1093 wdev->script_task.log_prefix = wdev->name;
1094
1095 wdev->script_proc_fd.fd = -1;
1096 wdev->script_proc_fd.cb = wireless_proc_poll_fd;
1097
1098 wdev->script_check.cb = wireless_device_check_script_tasks;
1099
1100 vlist_add(&wireless_devices, &wdev->node, wdev->name);
1101 }
1102
1103 /* creates a wireless station object. Called by config */
1104 void
1105 wireless_station_create(struct wireless_device *wdev, char *vif, struct blob_attr *data, const char *section)
1106 {
1107 struct wireless_station *sta;
1108 struct blob_attr *tb[__STA_ATTR_MAX];
1109 struct blob_attr *cur;
1110 char *name_buf, *vif_buf;
1111 char name[8];
1112
1113 blobmsg_parse(sta_policy, __STA_ATTR_MAX, tb, blob_data(data), blob_len(data));
1114
1115 cur = tb[STA_ATTR_DISABLED];
1116 if (cur && blobmsg_get_bool(cur))
1117 return;
1118
1119 sprintf(name, "%d", wdev->sta_idx++);
1120
1121 sta = calloc_a(sizeof(*sta),
1122 &name_buf, strlen(name) + 1,
1123 &vif_buf, strlen(vif) + 1);
1124 sta->name = strcpy(name_buf, name);
1125 sta->vif = strcpy(vif_buf, vif);
1126 sta->wdev = wdev;
1127 sta->config = data;
1128 sta->section = section;
1129
1130 vlist_add(&wdev->stations, &sta->node, sta->name);
1131 }
1132
1133 /* ubus callback network.wireless.status, runs for every interface, encode the station */
1134 static void
1135 wireless_station_status(struct wireless_station *sta, struct blob_buf *b)
1136 {
1137 void *i;
1138
1139 i = blobmsg_open_table(b, NULL);
1140 if (sta->section)
1141 blobmsg_add_string(b, "section", sta->section);
1142 put_container(b, sta->config, "config");
1143 blobmsg_close_table(b, i);
1144 }
1145
1146 /* create a vlan object. Called by config */
1147 void
1148 wireless_vlan_create(struct wireless_device *wdev, char *vif, struct blob_attr *data, const char *section)
1149 {
1150 struct wireless_vlan *vlan;
1151 struct blob_attr *tb[__VLAN_ATTR_MAX];
1152 struct blob_attr *cur;
1153 char *name_buf, *vif_buf;
1154 char name[8];
1155
1156 blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(data), blob_len(data));
1157
1158 cur = tb[VLAN_ATTR_DISABLED];
1159 if (cur && blobmsg_get_bool(cur))
1160 return;
1161
1162 sprintf(name, "%d", wdev->vlan_idx++);
1163
1164 vlan = calloc_a(sizeof(*vlan),
1165 &name_buf, strlen(name) + 1,
1166 &vif_buf, strlen(vif) + 1);
1167 vlan->name = strcpy(name_buf, name);
1168 vlan->vif = strcpy(vif_buf, vif);
1169 vlan->wdev = wdev;
1170 vlan->config = data;
1171 vlan->section = section;
1172 vlan->isolate = false;
1173
1174 vlist_add(&wdev->vlans, &vlan->node, vlan->name);
1175 }
1176
1177 /* ubus callback network.wireless.status, runs for every interface, encode the vlan informations */
1178 static void
1179 wireless_vlan_status(struct wireless_vlan *vlan, struct blob_buf *b)
1180 {
1181 void *i;
1182
1183 i = blobmsg_open_table(b, NULL);
1184 if (vlan->section)
1185 blobmsg_add_string(b, "section", vlan->section);
1186 if (vlan->ifname)
1187 blobmsg_add_string(b, "ifname", vlan->ifname);
1188 put_container(b, vlan->config, "config");
1189 blobmsg_close_table(b, i);
1190 }
1191
1192 /* create a wireless interface object. Called by config */
1193 struct wireless_interface* wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
1194 {
1195 struct wireless_interface *vif;
1196 struct blob_attr *tb[__VIF_ATTR_MAX];
1197 struct blob_attr *cur;
1198 char *name_buf;
1199 char name[8];
1200
1201 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
1202
1203 cur = tb[VIF_ATTR_DISABLED];
1204 if (cur && blobmsg_get_bool(cur))
1205 return NULL;
1206
1207 sprintf(name, "%d", wdev->vif_idx++);
1208
1209 vif = calloc_a(sizeof(*vif),
1210 &name_buf, strlen(name) + 1);
1211 vif->name = strcpy(name_buf, name);
1212 vif->wdev = wdev;
1213 vif->config = data;
1214 vif->section = section;
1215 vif->isolate = false;
1216
1217 vlist_add(&wdev->interfaces, &vif->node, vif->name);
1218
1219 return vlist_find(&wdev->interfaces, name, vif, node);
1220 }
1221
1222 /* ubus callback network.wireless.status, runs for every interface */
1223 static void
1224 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
1225 {
1226 struct wireless_vlan *vlan;
1227 struct wireless_station *sta;
1228 void *i, *j;
1229
1230 i = blobmsg_open_table(b, NULL);
1231 if (iface->section)
1232 blobmsg_add_string(b, "section", iface->section);
1233 if (iface->ifname)
1234 blobmsg_add_string(b, "ifname", iface->ifname);
1235 put_container(b, iface->config, "config");
1236 j = blobmsg_open_array(b, "vlans");
1237 vlist_for_each_element(&iface->wdev->vlans, vlan, node)
1238 if (!strcmp(iface->name, vlan->vif))
1239 wireless_vlan_status(vlan, b);
1240 blobmsg_close_array(b, j);
1241 j = blobmsg_open_array(b, "stations");
1242 vlist_for_each_element(&iface->wdev->stations, sta, node)
1243 if (!strcmp(iface->name, sta->vif))
1244 wireless_station_status(sta, b);
1245 blobmsg_close_array(b, j);
1246 blobmsg_close_table(b, i);
1247 }
1248
1249 /* ubus callback network.wireless.status */
1250 void
1251 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
1252 {
1253 struct wireless_interface *iface;
1254 void *c, *i;
1255
1256 c = blobmsg_open_table(b, wdev->name);
1257 blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
1258 blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
1259 blobmsg_add_u8(b, "autostart", wdev->autostart);
1260 blobmsg_add_u8(b, "disabled", wdev->disabled);
1261 blobmsg_add_u8(b, "retry_setup_failed", wdev->retry_setup_failed);
1262 put_container(b, wdev->config, "config");
1263
1264 i = blobmsg_open_array(b, "interfaces");
1265 vlist_for_each_element(&wdev->interfaces, iface, node)
1266 wireless_interface_status(iface, b);
1267 blobmsg_close_array(b, i);
1268 blobmsg_close_table(b, c);
1269 }
1270
1271 /* ubus callback network.wireless.get_validate */
1272 void
1273 wireless_device_get_validate(struct wireless_device *wdev, struct blob_buf *b)
1274 {
1275 struct uci_blob_param_list *p;
1276 void *c, *d;
1277 int i;
1278
1279 c = blobmsg_open_table(b, wdev->name);
1280
1281 d = blobmsg_open_table(b, "device");
1282 p = wdev->drv->device.config;
1283 for (i = 0; i < p->n_params; i++)
1284 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1285 blobmsg_close_table(b, d);
1286
1287 d = blobmsg_open_table(b, "interface");
1288 p = wdev->drv->interface.config;
1289 for (i = 0; i < p->n_params; i++)
1290 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1291 blobmsg_close_table(b, d);
1292
1293 blobmsg_close_table(b, c);
1294 }
1295
1296 /* ubus callback network.wireless.notify, command = set data, for vif */
1297 static void
1298 wireless_interface_set_data(struct wireless_interface *vif)
1299 {
1300 enum {
1301 VIF_DATA_IFNAME,
1302 __VIF_DATA_MAX,
1303 };
1304 static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
1305 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1306 };
1307 struct blob_attr *tb[__VIF_DATA_MAX];
1308 struct blob_attr *cur;
1309
1310 blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
1311 blobmsg_data(vif->data), blobmsg_data_len(vif->data));
1312
1313 if ((cur = tb[VIF_DATA_IFNAME]))
1314 vif->ifname = blobmsg_data(cur);
1315 }
1316
1317 /* ubus callback network.wireless.notify, command = set data, for vlan */
1318 static void
1319 wireless_vlan_set_data(struct wireless_vlan *vlan)
1320 {
1321 enum {
1322 VLAN_DATA_IFNAME,
1323 __VLAN_DATA_MAX,
1324 };
1325 static const struct blobmsg_policy data_policy[__VLAN_DATA_MAX] = {
1326 [VLAN_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1327 };
1328 struct blob_attr *tb[__VLAN_DATA_MAX];
1329 struct blob_attr *cur;
1330
1331 blobmsg_parse(data_policy, __VLAN_DATA_MAX, tb,
1332 blobmsg_data(vlan->data), blobmsg_data_len(vlan->data));
1333
1334 if ((cur = tb[VLAN_DATA_IFNAME]))
1335 vlan->ifname = blobmsg_data(cur);
1336 }
1337
1338 /* ubus callback network.wireless.notify, command = process add */
1339 static int
1340 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
1341 {
1342 enum {
1343 PROC_ATTR_PID,
1344 PROC_ATTR_EXE,
1345 PROC_ATTR_REQUIRED,
1346 PROC_ATTR_KEEP,
1347 __PROC_ATTR_MAX
1348 };
1349 static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
1350 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
1351 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
1352 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
1353 [PROC_ATTR_KEEP] = { .name = "keep", .type = BLOBMSG_TYPE_BOOL },
1354 };
1355 struct blob_attr *tb[__PROC_ATTR_MAX];
1356 struct wireless_process *proc;
1357 char *name;
1358 int pid;
1359
1360 if (!data)
1361 return UBUS_STATUS_INVALID_ARGUMENT;
1362
1363 blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1364 if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
1365 return UBUS_STATUS_INVALID_ARGUMENT;
1366
1367 pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
1368 if (pid < 2)
1369 return UBUS_STATUS_INVALID_ARGUMENT;
1370
1371 proc = calloc_a(sizeof(*proc),
1372 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
1373
1374 proc->pid = pid;
1375 proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
1376
1377 if (tb[PROC_ATTR_REQUIRED])
1378 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
1379
1380 if (tb[PROC_ATTR_KEEP])
1381 proc->keep = blobmsg_get_bool(tb[PROC_ATTR_KEEP]);
1382
1383 D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
1384 list_add(&proc->list, &wdev->script_proc);
1385 uloop_timeout_set(&wdev->script_check, 0);
1386
1387 return 0;
1388 }
1389
1390 /* ubus callback network.wireless.notify, command = process kill all */
1391 static int
1392 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
1393 struct ubus_request_data *req)
1394 {
1395 enum {
1396 KILL_ATTR_SIGNAL,
1397 KILL_ATTR_IMMEDIATE,
1398 __KILL_ATTR_MAX
1399 };
1400 static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
1401 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
1402 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
1403 };
1404 struct blob_attr *tb[__KILL_ATTR_MAX];
1405 struct blob_attr *cur;
1406 bool immediate = false;
1407 int signal = SIGTERM;
1408
1409 blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1410
1411 if ((cur = tb[KILL_ATTR_SIGNAL]))
1412 signal = blobmsg_get_u32(cur);
1413
1414 if ((cur = tb[KILL_ATTR_IMMEDIATE]))
1415 immediate = blobmsg_get_bool(cur);
1416
1417 if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
1418 return UBUS_STATUS_PERMISSION_DENIED;
1419
1420 wireless_process_kill_all(wdev, signal, immediate);
1421
1422 if (list_empty(&wdev->script_proc))
1423 return 0;
1424
1425 wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
1426 ubus_defer_request(ubus_ctx, req, wdev->kill_request);
1427
1428 return 0;
1429 }
1430
1431 /* ubus callback network.wireless.notify, command = set_retry */
1432 static int
1433 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
1434 {
1435 static const struct blobmsg_policy retry_policy = {
1436 .name = "retry", .type = BLOBMSG_TYPE_INT32
1437 };
1438 struct blob_attr *val;
1439
1440 blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
1441 if (val)
1442 wdev->retry = blobmsg_get_u32(val);
1443 else
1444 wdev->retry = WIRELESS_SETUP_RETRY;
1445 __wireless_device_set_up(wdev, 0);
1446 netifd_log_message(L_NOTICE, "Wireless device '%s' set retry=%d\n", wdev->name, wdev->retry);
1447 return 0;
1448 }
1449
1450 enum {
1451 NOTIFY_CMD_UP = 0,
1452 NOTIFY_CMD_SET_DATA = 1,
1453 NOTIFY_CMD_PROCESS_ADD = 2,
1454 NOTIFY_CMD_PROCESS_KILL_ALL = 3,
1455 NOTIFY_CMD_SET_RETRY = 4,
1456 };
1457
1458 /* ubus callback network.wireless.notify */
1459 int
1460 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
1461 struct ubus_request_data *req)
1462 {
1463 enum {
1464 NOTIFY_ATTR_COMMAND,
1465 NOTIFY_ATTR_VIF,
1466 NOTIFY_ATTR_VLAN,
1467 NOTIFY_ATTR_DATA,
1468 __NOTIFY_MAX,
1469 };
1470 static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
1471 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
1472 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
1473 [NOTIFY_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_STRING },
1474 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
1475 };
1476 struct wireless_interface *vif = NULL;
1477 struct wireless_vlan *vlan = NULL;
1478 struct blob_attr *tb[__NOTIFY_MAX];
1479 struct blob_attr *cur, **pdata;
1480
1481 blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
1482
1483 if (!tb[NOTIFY_ATTR_COMMAND])
1484 return UBUS_STATUS_INVALID_ARGUMENT;
1485
1486 if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
1487 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
1488 if (!vif)
1489 return UBUS_STATUS_NOT_FOUND;
1490 }
1491
1492 if ((cur = tb[NOTIFY_ATTR_VLAN]) != NULL) {
1493 vlan = vlist_find(&wdev->vlans, blobmsg_data(cur), vlan, node);
1494 if (!vlan)
1495 return UBUS_STATUS_NOT_FOUND;
1496 }
1497
1498 cur = tb[NOTIFY_ATTR_DATA];
1499 if (!cur)
1500 return UBUS_STATUS_INVALID_ARGUMENT;
1501
1502 switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
1503 case NOTIFY_CMD_UP:
1504 if (vif || vlan)
1505 return UBUS_STATUS_INVALID_ARGUMENT;
1506
1507 if (wdev->state != IFS_SETUP)
1508 return UBUS_STATUS_PERMISSION_DENIED;
1509
1510 wireless_device_mark_up(wdev);
1511 break;
1512 case NOTIFY_CMD_SET_DATA:
1513 if (vif)
1514 pdata = &vif->data;
1515 else if (vlan)
1516 pdata = &vlan->data;
1517 else
1518 pdata = &wdev->data;
1519
1520 if (*pdata)
1521 return UBUS_STATUS_INVALID_ARGUMENT;
1522
1523 *pdata = blob_memdup(cur);
1524 if (vif)
1525 wireless_interface_set_data(vif);
1526 else if (vlan)
1527 wireless_vlan_set_data(vlan);
1528 break;
1529 case NOTIFY_CMD_PROCESS_ADD:
1530 return wireless_device_add_process(wdev, cur);
1531 case NOTIFY_CMD_PROCESS_KILL_ALL:
1532 return wireless_device_process_kill_all(wdev, cur, req);
1533 case NOTIFY_CMD_SET_RETRY:
1534 return wireless_device_set_retry(wdev, cur);
1535 default:
1536 return UBUS_STATUS_INVALID_ARGUMENT;
1537 }
1538
1539 return 0;
1540 }
1541
1542 /* called on startup and by netifd reload() */
1543 void
1544 wireless_start_pending(void)
1545 {
1546 struct wireless_device *wdev;
1547
1548 vlist_for_each_element(&wireless_devices, wdev, node)
1549 __wireless_device_set_up(wdev, 0);
1550 }
1551
1552 void wireless_device_hotplug_event(const char *name, bool add)
1553 {
1554 struct wireless_interface *vif;
1555 struct wireless_device *wdev;
1556 const char *s;
1557 size_t len;
1558
1559 s = strstr(name, ".sta");
1560 if (s) {
1561 if (strchr(s + 4, '.'))
1562 return;
1563
1564 len = s - name;
1565 } else if (!device_find(name)) {
1566 len = strlen(name);
1567 } else {
1568 return;
1569 }
1570
1571 vlist_for_each_element(&wireless_devices, wdev, node) {
1572 vlist_for_each_element(&wdev->interfaces, vif, node) {
1573 if (!vif->ifname)
1574 continue;
1575
1576 if (strlen(vif->ifname) != len ||
1577 strncmp(vif->ifname, name, len) != 0)
1578 continue;
1579
1580 wireless_interface_handle_link(vif, name, add);
1581 }
1582 }
1583 }
OpenWrt Network interface configuration daemon