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