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Sources/netifd/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_BRIDGE_ISOLATE,
 67         VIF_ATTR_ISOLATE,
 68         VIF_ATTR_MODE,
 69         VIF_ATTR_PROXYARP,
 70         VIF_ATTR_MCAST_TO_UCAST,
 71         __VIF_ATTR_MAX,
 72 };
 73 
 74 static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
 75         [VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
 76         [VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
 77         [VIF_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
 78         [VIF_ATTR_BRIDGE_ISOLATE] = { .name = "bridge_isolate", .type = BLOBMSG_TYPE_BOOL },
 79         [VIF_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
 80         [VIF_ATTR_MODE] = { .name = "mode", .type = BLOBMSG_TYPE_STRING },
 81         [VIF_ATTR_PROXYARP] = { .name = "proxy_arp", .type = BLOBMSG_TYPE_BOOL },
 82         [VIF_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
 83 };
 84 
 85 static const struct uci_blob_param_list vif_param = {
 86         .n_params = ARRAY_SIZE(vif_policy),
 87         .params = vif_policy,
 88 };
 89 
 90 enum {
 91         VLAN_ATTR_DISABLED,
 92         VLAN_ATTR_NETWORK,
 93         VLAN_ATTR_NETWORK_VLAN,
 94         VLAN_ATTR_BRIDGE_ISOLATE,
 95         VLAN_ATTR_ISOLATE,
 96         VLAN_ATTR_MCAST_TO_UCAST,
 97         __VLAN_ATTR_MAX,
 98 };
 99 
100 static const struct blobmsg_policy vlan_policy[__VLAN_ATTR_MAX] = {
101         [VLAN_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
102         [VLAN_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
103         [VLAN_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
104         [VLAN_ATTR_BRIDGE_ISOLATE] = { .name = "bridge_isolate", .type = BLOBMSG_TYPE_BOOL },
105         [VLAN_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
106         [VLAN_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
107 };
108 
109 static const struct uci_blob_param_list vlan_param = {
110         .n_params = ARRAY_SIZE(vlan_policy),
111         .params = vlan_policy,
112 };
113 
114 enum {
115         STA_ATTR_DISABLED,
116         __STA_ATTR_MAX,
117 };
118 
119 static const struct blobmsg_policy sta_policy[__STA_ATTR_MAX] = {
120         [STA_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
121 };
122 
123 static const struct uci_blob_param_list station_param = {
124         .n_params = ARRAY_SIZE(sta_policy),
125         .params = sta_policy,
126 };
127 
128 static void
129 wireless_handler_stop(struct wireless_device *wdev)
130 {
131         if (wdev->handler_pending) {
132                 wdev->handler_pending = false;
133                 list_del(&wdev->handler);
134         }
135 }
136 
137 static void
138 put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
139 {
140         void *c = blobmsg_open_table(buf, name);
141         blob_put_raw(buf, blobmsg_data(attr), blobmsg_len(attr));
142         blobmsg_close_table(buf, c);
143 }
144 
145 static void
146 vif_config_add_bridge(struct blob_buf *buf, struct blob_attr *networks, bool prepare)
147 {
148         struct interface *iface;
149         struct device *dev = NULL, *orig_dev;
150         struct blob_attr *cur;
151         const char *network;
152         size_t rem;
153 
154         if (!networks)
155                 return;
156 
157         blobmsg_for_each_attr(cur, networks, rem) {
158                 network = blobmsg_data(cur);
159 
160                 iface = vlist_find(&interfaces, network, iface, node);
161                 if (!iface)
162                         continue;
163 
164                 dev = iface->main_dev.dev;
165                 if (!dev)
166                         return;
167 
168                 if (!dev->hotplug_ops)
169                         return;
170         }
171 
172         if (!dev)
173                 return;
174 
175         orig_dev = dev;
176         if (dev->hotplug_ops && dev->hotplug_ops->prepare)
177                 dev->hotplug_ops->prepare(dev, &dev);
178 
179         if (!dev || !dev->type->bridge_capability)
180                 return;
181 
182         blobmsg_add_string(buf, "bridge", dev->ifname);
183         blobmsg_add_string(buf, "bridge-ifname", orig_dev->ifname);
184 
185         if (dev->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST)
186                 blobmsg_add_u8(buf, "multicast_to_unicast",
187                                dev->settings.multicast_to_unicast);
188 }
189 
190 static void
191 prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
192 {
193         struct wireless_interface *vif;
194         struct wireless_vlan *vlan;
195         struct wireless_station *sta;
196         void *l, *i, *j, *k;
197 
198         blob_buf_init(&b, 0);
199         put_container(&b, wdev->config, "config");
200         if (wdev->data)
201                 blobmsg_add_blob(&b, wdev->data);
202 
203         l = blobmsg_open_table(&b, "interfaces");
204         vlist_for_each_element(&wdev->interfaces, vif, node) {
205                 if (vif->disabled)
206                         continue;
207 
208                 i = blobmsg_open_table(&b, vif->name);
209                 vif_config_add_bridge(&b, vif->network, up);
210                 put_container(&b, vif->config, "config");
211                 if (vif->data)
212                         blobmsg_add_blob(&b, vif->data);
213 
214                 j = blobmsg_open_table(&b, "vlans");
215                 vlist_for_each_element(&vif->vlans, vlan, node) {
216                         k = blobmsg_open_table(&b, vlan->name);
217                         vif_config_add_bridge(&b, vlan->network, up);
218                         put_container(&b, vlan->config, "config");
219                         if (vlan->data)
220                                 blobmsg_add_blob(&b, vlan->data);
221                         blobmsg_close_table(&b, k);
222                 }
223                 blobmsg_close_table(&b, j);
224 
225                 j = blobmsg_open_table(&b, "stas");
226                 vlist_for_each_element(&vif->stations, sta, node) {
227                         k = blobmsg_open_table(&b, sta->name);
228                         put_container(&b, sta->config, "config");
229                         if (sta->data)
230                                 blobmsg_add_blob(&b, sta->data);
231                         blobmsg_close_table(&b, k);
232                 }
233                 blobmsg_close_table(&b, j);
234                 blobmsg_close_table(&b, i);
235         }
236         blobmsg_close_table(&b, l);
237 
238 }
239 
240 static bool
241 wireless_process_check(struct wireless_process *proc)
242 {
243         return check_pid_path(proc->pid, proc->exe);
244 }
245 
246 static void
247 wireless_complete_kill_request(struct wireless_device *wdev)
248 {
249         if (!wdev->kill_request)
250                 return;
251 
252         ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
253         free(wdev->kill_request);
254         wdev->kill_request = NULL;
255 }
256 
257 static void
258 wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
259 {
260         D(WIRELESS, "Wireless device '%s' free pid %d", wdev->name, proc->pid);
261         list_del(&proc->list);
262         free(proc);
263 
264         if (list_empty(&wdev->script_proc))
265                 wireless_complete_kill_request(wdev);
266 }
267 
268 static void
269 wireless_close_script_proc_fd(struct wireless_device *wdev)
270 {
271         if (wdev->script_proc_fd.fd < 0)
272                 return;
273 
274         uloop_fd_delete(&wdev->script_proc_fd);
275         close(wdev->script_proc_fd.fd);
276         wdev->script_proc_fd.fd = -1;
277 }
278 
279 static void
280 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
281 {
282         struct wireless_process *proc, *tmp;
283 
284         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
285                 bool check = wireless_process_check(proc);
286 
287                 if (check && !proc->keep) {
288                         D(WIRELESS, "Wireless device '%s' kill pid %d", wdev->name, proc->pid);
289                         kill(proc->pid, signal);
290                 }
291 
292                 if (free || !check)
293                         wireless_process_free(wdev, proc);
294         }
295 
296         if (free)
297                 wireless_close_script_proc_fd(wdev);
298 }
299 
300 static void
301 wireless_device_free_state(struct wireless_device *wdev)
302 {
303         struct wireless_interface *vif;
304         struct wireless_vlan *vlan;
305         struct wireless_station *sta;
306 
307         wireless_handler_stop(wdev);
308         uloop_timeout_cancel(&wdev->script_check);
309         uloop_timeout_cancel(&wdev->timeout);
310         wireless_complete_kill_request(wdev);
311         free(wdev->data);
312         wdev->data = NULL;
313         vlist_for_each_element(&wdev->interfaces, vif, node) {
314                 free(vif->data);
315                 vif->data = NULL;
316                 vif->ifname = NULL;
317                 vlist_for_each_element(&vif->vlans, vlan, node) {
318                         free(vlan->data);
319                         vlan->data = NULL;
320                         vlan->ifname = NULL;
321                 }
322                 vlist_for_each_element(&vif->stations, sta, node) {
323                         free(sta->data);
324                         sta->data = NULL;
325                 }
326         }
327 }
328 
329 static void wireless_device_set_mcast_to_unicast(struct device *dev, int val)
330 {
331         if (val < 0) {
332                 dev->settings.flags &= ~DEV_OPT_MULTICAST_TO_UNICAST;
333                 return;
334         }
335 
336         dev->settings.multicast_to_unicast = !!val;
337         dev->settings.flags |= DEV_OPT_MULTICAST_TO_UNICAST;
338 }
339 
340 static void wireless_check_interface(struct blob_attr *list, int *enabled, int *ifindex)
341 {
342         struct interface *iface;
343         struct blob_attr *cur;
344         size_t rem;
345 
346         blobmsg_for_each_attr(cur, list, rem) {
347                 struct device *mdev;
348 
349                 iface = vlist_find(&interfaces, blobmsg_get_string(cur), iface, node);
350                 if (!iface)
351                         continue;
352 
353                 if (iface->autostart)
354                         *enabled = 1;
355                 else if (*enabled != 1)
356                         *enabled = 0;
357 
358                 mdev = iface->main_dev.dev;
359                 if (!mdev || !mdev->hotplug_ops)
360                         continue;
361 
362                 *ifindex = mdev->ifindex;
363         }
364 }
365 
366 static void wireless_interface_handle_link(struct wireless_interface *vif, const char *ifname, bool up)
367 {
368         struct interface *iface;
369         struct blob_attr *cur;
370         const char *network;
371         struct device *dev;
372         int enabled = -1;
373         size_t rem;
374 
375         if (!vif->network || !vif->ifname)
376                 return;
377 
378         if (!ifname)
379                 ifname = vif->ifname;
380 
381         if (!up)
382                 goto out;
383 
384         dev = __device_get(ifname, 2, false);
385         if (!dev)
386                 goto out;
387 
388         dev->wireless = true;
389         dev->settings.flags |= DEV_OPT_ISOLATE;
390         dev->settings.isolate = vif->bridge_isolate;
391 
392         if (strcmp(ifname, vif->ifname) != 0)
393                 goto out;
394 
395         dev->wireless_isolate = vif->isolate;
396         dev->wireless_proxyarp = vif->proxyarp;
397         dev->wireless_ap = vif->ap_mode;
398         wireless_device_set_mcast_to_unicast(dev, vif->multicast_to_unicast);
399         dev->bpdu_filter = dev->wireless_ap;
400 
401 out:
402         wireless_check_interface(vif->network, &enabled, &vif->network_ifindex);
403         blobmsg_for_each_attr(cur, vif->network, rem) {
404                 network = blobmsg_data(cur);
405 
406                 iface = vlist_find(&interfaces, network, iface, node);
407                 if (!iface)
408                         continue;
409 
410                 interface_handle_link(iface, ifname, vif->network_vlan, up, true);
411         }
412 }
413 
414 static void wireless_vlan_handle_link(struct wireless_vlan *vlan, bool up)
415 {
416         struct interface *iface;
417         struct blob_attr *cur;
418         const char *network;
419         int enabled = -1;
420         size_t rem;
421 
422         if (!vlan->network || !vlan->ifname)
423                 return;
424 
425         if (up) {
426                 struct device *dev = device_get(vlan->ifname, 2);
427                 if (dev) {
428                         dev->wireless_isolate = vlan->isolate;
429                         dev->wireless = true;
430                         dev->wireless_ap = true;
431                         dev->bpdu_filter = true;
432                         dev->settings.flags |= DEV_OPT_ISOLATE;
433                         dev->settings.isolate = vlan->bridge_isolate;
434                         wireless_device_set_mcast_to_unicast(dev, vlan->multicast_to_unicast);
435                 }
436         }
437 
438         wireless_check_interface(vlan->network, &enabled, &vlan->network_ifindex);
439         blobmsg_for_each_attr(cur, vlan->network, rem) {
440                 network = blobmsg_data(cur);
441 
442                 iface = vlist_find(&interfaces, network, iface, node);
443                 if (!iface)
444                         continue;
445 
446                 interface_handle_link(iface, vlan->ifname, vlan->network_vlan, up, true);
447         }
448 }
449 
450 static void
451 wireless_device_setup_cancel(struct wireless_device *wdev)
452 {
453         if (wdev->cancel)
454                 return;
455 
456         wireless_handler_stop(wdev);
457         D(WIRELESS, "Cancel wireless device '%s' setup", wdev->name);
458         wdev->cancel = true;
459         uloop_timeout_set(&wdev->timeout, 10 * 1000);
460 }
461 
462 static void
463 wireless_device_run_handler(struct wireless_device *wdev, bool up)
464 {
465         const char *action = up ? "setup" : "teardown";
466         const char *argv[6];
467         char *config;
468         int i = 0;
469         int fds[2] = { -1, -1 };
470 
471         wireless_handler_stop(wdev);
472 
473         if (handler_pending && wdev->serialize) {
474                 wdev->handler_action = up;
475                 wdev->handler_pending = true;
476                 list_add_tail(&wdev->handler, &handlers);
477                 return;
478         }
479         if (wdev->serialize)
480                 handler_pending = true;
481 
482         D(WIRELESS, "Wireless device '%s' run %s handler", wdev->name, action);
483         if (!up && wdev->prev_config) {
484                 config = blobmsg_format_json(wdev->prev_config, true);
485                 free(wdev->prev_config);
486                 wdev->prev_config = NULL;
487         } else {
488                 prepare_config(wdev, &b, up);
489                 free(wdev->prev_config);
490                 wdev->prev_config = up ? blob_memdup(b.head) : NULL;
491                 config = blobmsg_format_json(b.head, true);
492         }
493 
494         argv[i++] = wdev->drv->script;
495         argv[i++] = wdev->drv->name;
496         argv[i++] = action;
497         argv[i++] = wdev->name;
498         argv[i++] = config;
499         argv[i] = NULL;
500 
501         if (up && pipe(fds) == 0) {
502                 if (wdev->script_proc_fd.fd >= 0)
503                         wireless_close_script_proc_fd(wdev);
504 
505                 wdev->script_proc_fd.fd = fds[0];
506                 uloop_fd_add(&wdev->script_proc_fd,
507                              ULOOP_READ | ULOOP_EDGE_TRIGGER);
508         }
509 
510         netifd_start_process(argv, NULL, &wdev->script_task);
511 
512         if (fds[1] >= 0)
513                 close(fds[1]);
514 
515         free(config);
516 }
517 
518 static void
519 wireless_handler_next(void)
520 {
521         struct wireless_device *wdev;
522 
523         if (handler_pending)
524                 return;
525         if (list_empty(&handlers))
526                 return;
527         wdev = list_first_entry(&handlers, struct wireless_device, handler);
528         list_del(&wdev->handler);
529         wdev->handler_pending = false;
530         wireless_device_run_handler(wdev, wdev->handler_action);
531 }
532 
533 static void
534 __wireless_device_set_up(struct wireless_device *wdev, int force)
535 {
536         if (wdev->disabled)
537                 return;
538 
539         if (wdev->retry_setup_failed)
540                 return;
541 
542         if (!wdev->autostart)
543                 return;
544 
545         if ((!force && wdev->state != IFS_DOWN) || config_init)
546                 return;
547 
548         wdev->state = IFS_SETUP;
549         wireless_device_run_handler(wdev, true);
550 }
551 
552 static void
553 wireless_device_free(struct wireless_device *wdev)
554 {
555         wireless_handler_stop(wdev);
556         vlist_flush_all(&wdev->interfaces);
557         avl_delete(&wireless_devices.avl, &wdev->node.avl);
558         free(wdev->config);
559         free(wdev->prev_config);
560         free(wdev);
561 }
562 
563 static void
564 wdev_handle_config_change(struct wireless_device *wdev)
565 {
566         enum interface_config_state state = wdev->config_state;
567 
568         switch(state) {
569         case IFC_RELOAD:
570                 wdev->retry = WIRELESS_SETUP_RETRY;
571                 wdev->retry_setup_failed = false;
572                 fallthrough;
573         case IFC_NORMAL:
574                 __wireless_device_set_up(wdev, 0);
575 
576                 wdev->config_state = IFC_NORMAL;
577                 break;
578         case IFC_REMOVE:
579                 wireless_device_free(wdev);
580                 break;
581         }
582 }
583 
584 static void
585 wireless_device_mark_down(struct wireless_device *wdev)
586 {
587         struct wireless_interface *vif;
588         struct wireless_vlan *vlan;
589 
590         netifd_log_message(L_NOTICE, "Wireless device '%s' is now down\n", wdev->name);
591 
592 
593         vlist_for_each_element(&wdev->interfaces, vif, node) {
594                 wireless_interface_handle_link(vif, NULL, false);
595                 vlist_for_each_element(&vif->vlans, vlan, node)
596                         wireless_vlan_handle_link(vlan, false);
597         }
598 
599         wireless_process_kill_all(wdev, SIGTERM, true);
600 
601         wdev->cancel = false;
602         wdev->state = IFS_DOWN;
603         wireless_device_free_state(wdev);
604         wdev_handle_config_change(wdev);
605         netifd_ubus_wireless_notify(wdev, false);
606 }
607 
608 /* timeout callback to protect the tear down */
609 static void
610 wireless_device_setup_timeout(struct uloop_timeout *timeout)
611 {
612         struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
613 
614         if (wdev->handler_pending) {
615                 wdev->handler_pending = false;
616                 list_del(&wdev->handler);
617         }
618         netifd_kill_process(&wdev->script_task);
619         wdev->script_task.cb(&wdev->script_task, -1);
620         wireless_device_mark_down(wdev);
621 }
622 
623 void
624 wireless_device_set_up(struct wireless_device *wdev)
625 {
626         wdev->retry = WIRELESS_SETUP_RETRY;
627         wdev->autostart = true;
628         __wireless_device_set_up(wdev, 0);
629 }
630 
631 void
632 wireless_device_reconf(struct wireless_device *wdev)
633 {
634         wdev->retry = WIRELESS_SETUP_RETRY;
635         wdev->autostart = true;
636         __wireless_device_set_up(wdev, wdev->reconf && (wdev->state == IFS_UP));
637 }
638 
639 static void
640 __wireless_device_set_down(struct wireless_device *wdev)
641 {
642         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
643                 return;
644 
645         if (wdev->script_task.uloop.pending) {
646                 wireless_device_setup_cancel(wdev);
647                 return;
648         }
649 
650         wdev->state = IFS_TEARDOWN;
651         wireless_device_run_handler(wdev, false);
652 }
653 
654 /* ubus callback network.wireless.notify, command = up */
655 static void
656 wireless_device_mark_up(struct wireless_device *wdev)
657 {
658         struct wireless_interface *vif;
659         struct wireless_vlan *vlan;
660 
661         if (wdev->cancel) {
662                 wdev->cancel = false;
663                 __wireless_device_set_down(wdev);
664                 return;
665         }
666 
667         netifd_log_message(L_NOTICE, "Wireless device '%s' is now up\n", wdev->name);
668         wdev->retry = WIRELESS_SETUP_RETRY;
669         wdev->state = IFS_UP;
670         vlist_for_each_element(&wdev->interfaces, vif, node) {
671                 wireless_interface_handle_link(vif, NULL, true);
672                 vlist_for_each_element(&vif->vlans, vlan, node)
673                         wireless_vlan_handle_link(vlan, true);
674         }
675         netifd_ubus_wireless_notify(wdev, true);
676 }
677 
678 static void
679 wireless_device_retry_setup(struct wireless_device *wdev)
680 {
681         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
682                 return;
683 
684         netifd_log_message(wdev->retry ? L_WARNING : L_CRIT,
685                            "Wireless device '%s' setup failed, retry=%d\n",
686                            wdev->name, wdev->retry);
687         if (--wdev->retry < 0)
688                 wdev->retry_setup_failed = true;
689 
690         __wireless_device_set_down(wdev);
691 }
692 
693 static void
694 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
695 {
696         struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
697 
698         switch (wdev->state) {
699         case IFS_SETUP:
700                 wireless_device_retry_setup(wdev);
701                 break;
702         case IFS_TEARDOWN:
703                 wireless_device_mark_down(wdev);
704                 break;
705         default:
706                 break;
707         }
708 
709         if (wdev->serialize) {
710                 handler_pending = false;
711                 wireless_handler_next();
712         }
713 }
714 
715 void
716 wireless_device_set_down(struct wireless_device *wdev)
717 {
718         wdev->retry_setup_failed = false;
719         wdev->autostart = false;
720         __wireless_device_set_down(wdev);
721 }
722 
723 static void
724 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
725 {
726         if (wdev->config_state != IFC_NORMAL)
727                 return;
728 
729         wdev->config_update = false;
730         if (!wdev->disabled && s == IFC_RELOAD && wdev->reconf && wdev->state == IFS_UP) {
731                 wireless_device_reconf(wdev);
732                 return;
733         }
734 
735         wdev->config_state = s;
736         if (wdev->state == IFS_DOWN)
737                 wdev_handle_config_change(wdev);
738         else
739                 __wireless_device_set_down(wdev);
740 }
741 
742 static void
743 wdev_prepare_prev_config(struct wireless_device *wdev)
744 {
745         prepare_config(wdev, &b, false);
746         free(wdev->prev_config);
747         wdev->prev_config = blob_memdup(b.head);
748 }
749 
750 static void
751 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
752 {
753         struct blob_attr *new_config = wd_new->config;
754         bool disabled = wd_new->disabled;
755 
756         wdev->reconf = wd_new->reconf;
757         wdev->serialize = wd_new->serialize;
758         free(wd_new);
759 
760         if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled)
761                 return;
762 
763         D(WIRELESS, "Update configuration of wireless device '%s'", wdev->name);
764         free(wdev->config);
765         wdev->config = blob_memdup(new_config);
766         wdev->disabled = disabled;
767         wdev->config_update = true;
768 }
769 
770 static void
771 wdev_create(struct wireless_device *wdev)
772 {
773         wdev->retry = WIRELESS_SETUP_RETRY;
774         wdev->config = blob_memdup(wdev->config);
775 }
776 
777 /* vlist update call for wireless device list */
778 static void
779 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
780             struct vlist_node *node_old)
781 {
782         struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
783         struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
784 
785         if (wd_old && wd_new) {
786                 D(WIRELESS, "Update wireless device '%s'", wd_old->name);
787                 wdev_change_config(wd_old, wd_new);
788         } else if (wd_old) {
789                 D(WIRELESS, "Delete wireless device '%s'", wd_old->name);
790                 wdev_set_config_state(wd_old, IFC_REMOVE);
791         } else if (wd_new) {
792                 D(WIRELESS, "Create wireless device '%s'", wd_new->name);
793                 wdev_create(wd_new);
794         }
795 }
796 
797 /* wireless netifd script handler */
798 static void
799 wireless_add_handler(const char *script, const char *name, json_object *obj)
800 {
801         struct wireless_driver *drv;
802         char *name_str, *script_str;
803         json_object *dev_config_obj, *iface_config_obj, *vlan_config_obj, *station_config_obj;
804         struct uci_blob_param_list *dev_config, *iface_config, *vlan_config, *station_config;
805 
806         dev_config_obj = json_get_field(obj, "device", json_type_array);
807         iface_config_obj = json_get_field(obj, "iface", json_type_array);
808         vlan_config_obj = json_get_field(obj, "vlan", json_type_array);
809         station_config_obj = json_get_field(obj, "station", json_type_array);
810 
811         if (!dev_config_obj || !iface_config_obj || !vlan_config_obj || !station_config_obj)
812                 return;
813 
814         drv = calloc_a(sizeof(*drv),
815                 &dev_config, sizeof(*dev_config) + sizeof(void *),
816                 &iface_config, sizeof(*iface_config) + sizeof(void *),
817                 &vlan_config, sizeof(*vlan_config) + sizeof(void *),
818                 &station_config, sizeof(*station_config) + sizeof(void *),
819                 &name_str, strlen(name) + 1,
820                 &script_str, strlen(script) + 1);
821 
822         drv->name = strcpy(name_str, name);
823         drv->script = strcpy(script_str, script);
824 
825         dev_config->n_next = 1;
826         dev_config->next[0] = &wdev_param;
827         drv->device.config = dev_config;
828 
829         iface_config->n_next = 1;
830         iface_config->next[0] = &vif_param;
831         drv->interface.config = iface_config;
832 
833         vlan_config->n_next = 1;
834         vlan_config->next[0] = &vlan_param;
835         drv->vlan.config = vlan_config;
836 
837         station_config->n_next = 1;
838         station_config->next[0] = &station_param;
839         drv->station.config = station_config;
840 
841         drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
842         drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
843         drv->vlan.buf = netifd_handler_parse_config(drv->vlan.config, vlan_config_obj);
844         drv->station.buf = netifd_handler_parse_config(drv->station.config, station_config_obj);
845 
846         drv->node.key = drv->name;
847         avl_insert(&wireless_drivers, &drv->node);
848         D(WIRELESS, "Add handler for script %s: %s", script, name);
849 }
850 
851 void wireless_init(void)
852 {
853         vlist_init(&wireless_devices, avl_strcmp, wdev_update);
854         wireless_devices.keep_old = true;
855         wireless_devices.no_delete = true;
856 
857         avl_init(&wireless_drivers, avl_strcmp, false, NULL);
858         drv_fd = netifd_open_subdir("wireless");
859         if (drv_fd < 0)
860                 return;
861 
862         netifd_init_script_handlers(drv_fd, wireless_add_handler);
863 }
864 
865 /* parse blob config into the wireless interface object */
866 static void
867 wireless_interface_init_config(struct wireless_interface *vif)
868 {
869         struct blob_attr *tb[__VIF_ATTR_MAX];
870         struct blob_attr *cur;
871 
872         vif->network = NULL;
873         blobmsg_parse_attr(vif_policy, __VIF_ATTR_MAX, tb, vif->config);
874 
875         if ((cur = tb[VIF_ATTR_NETWORK]))
876                 vif->network = cur;
877 
878         if ((cur = tb[VIF_ATTR_NETWORK_VLAN]))
879                 vif->network_vlan = cur;
880 
881         cur = tb[VIF_ATTR_MODE];
882         vif->ap_mode = cur && !strcmp(blobmsg_get_string(cur), "ap");
883 
884         cur = tb[VIF_ATTR_BRIDGE_ISOLATE];
885         vif->bridge_isolate = cur && blobmsg_get_bool(cur);
886 
887         cur = tb[VIF_ATTR_ISOLATE];
888         vif->isolate = cur && blobmsg_get_bool(cur);
889 
890         cur = tb[VIF_ATTR_PROXYARP];
891         vif->proxyarp = vif->ap_mode && cur && blobmsg_get_bool(cur);
892 
893         cur = tb[VIF_ATTR_MCAST_TO_UCAST];
894         vif->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
895 }
896 
897 static void
898 vif_free(struct wireless_interface *vif)
899 {
900         vlist_flush_all(&vif->vlans);
901         vlist_flush_all(&vif->stations);
902         free((void *) vif->section);
903         free(vif->config);
904         free(vif);
905 }
906 
907 /* vlist update call for wireless interface list */
908 static void
909 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
910            struct vlist_node *node_old)
911 {
912         struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
913         struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
914         struct wireless_device *wdev;
915 
916         if (vif_old)
917                 wdev = vif_old->wdev;
918         else
919                 wdev = vif_new->wdev;
920 
921         if (vif_old && vif_new) {
922                 free((void *) vif_old->section);
923                 vif_old->section = strdup(vif_new->section);
924                 if (blob_attr_equal(vif_old->config, vif_new->config)) {
925                         free(vif_new);
926                         return;
927                 }
928 
929                 D(WIRELESS, "Update wireless interface %s on device %s", vif_new->name, wdev->name);
930                 wireless_interface_handle_link(vif_old, NULL, false);
931                 free(vif_old->config);
932                 vif_old->config = blob_memdup(vif_new->config);
933                 wireless_interface_init_config(vif_old);
934                 free(vif_new);
935         } else if (vif_new) {
936                 D(WIRELESS, "Create new wireless interface %s on device %s", vif_new->name, wdev->name);
937                 vif_new->section = strdup(vif_new->section);
938                 vif_new->config = blob_memdup(vif_new->config);
939                 wireless_interface_init_config(vif_new);
940         } else if (vif_old) {
941                 D(WIRELESS, "Delete wireless interface %s on device %s", vif_old->name, wdev->name);
942                 wireless_interface_handle_link(vif_old, NULL, false);
943                 vif_free(vif_old);
944         }
945 
946         wdev->config_update = true;
947 }
948 
949 /* parse blob config into the vlan object */
950 static void
951 wireless_vlan_init_config(struct wireless_vlan *vlan)
952 {
953         struct blob_attr *tb[__VLAN_ATTR_MAX];
954         struct blob_attr *cur;
955 
956         vlan->network = NULL;
957         blobmsg_parse_attr(vlan_policy, __VLAN_ATTR_MAX, tb, vlan->config);
958 
959         if ((cur = tb[VLAN_ATTR_NETWORK]))
960                 vlan->network = cur;
961 
962         if ((cur = tb[VLAN_ATTR_NETWORK_VLAN]))
963                 vlan->network_vlan = cur;
964 
965         cur = tb[VLAN_ATTR_BRIDGE_ISOLATE];
966         vlan->bridge_isolate = cur && blobmsg_get_bool(cur);
967 
968         cur = tb[VLAN_ATTR_ISOLATE];
969         vlan->isolate = cur && blobmsg_get_bool(cur);
970 
971         cur = tb[VLAN_ATTR_MCAST_TO_UCAST];
972         vlan->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
973 }
974 
975 /* vlist update call for vlan list */
976 static void
977 vlan_update(struct vlist_tree *tree, struct vlist_node *node_new,
978             struct vlist_node *node_old)
979 {
980         struct wireless_vlan *vlan_old = container_of_safe(node_old, struct wireless_vlan, node);
981         struct wireless_vlan *vlan_new = container_of_safe(node_new, struct wireless_vlan, node);
982         struct wireless_interface *vif = container_of(tree, struct wireless_interface, vlans);
983         struct wireless_device *wdev = vif->wdev;
984 
985         if (vlan_old && vlan_new) {
986                 free((void *) vlan_old->section);
987                 vlan_old->section = strdup(vlan_new->section);
988                 if (blob_attr_equal(vlan_old->config, vlan_new->config)) {
989                         free(vlan_new);
990                         return;
991                 }
992 
993                 D(WIRELESS, "Update wireless vlan %s on device %s", vlan_new->name, wdev->name);
994                 wireless_vlan_handle_link(vlan_old, false);
995                 free(vlan_old->config);
996                 vlan_old->config = blob_memdup(vlan_new->config);
997                 vlan_old->isolate = vlan_new->isolate;
998                 wireless_vlan_init_config(vlan_old);
999                 free(vlan_new);
1000         } else if (vlan_new) {
1001                 D(WIRELESS, "Create new wireless vlan %s on device %s", vlan_new->name, wdev->name);
1002                 vlan_new->section = strdup(vlan_new->section);
1003                 vlan_new->config = blob_memdup(vlan_new->config);
1004                 wireless_vlan_init_config(vlan_new);
1005         } else if (vlan_old) {
1006                 D(WIRELESS, "Delete wireless vlan %s on device %s", vlan_old->name, wdev->name);
1007                 wireless_vlan_handle_link(vlan_old, false);
1008                 free((void *) vlan_old->section);
1009                 free(vlan_old->config);
1010                 free(vlan_old);
1011         }
1012 
1013         wdev->config_update = true;
1014 }
1015 
1016 /* vlist update call for station list */
1017 static void
1018 station_update(struct vlist_tree *tree, struct vlist_node *node_new,
1019                struct vlist_node *node_old)
1020 {
1021         struct wireless_station *sta_old = container_of_safe(node_old, struct wireless_station, node);
1022         struct wireless_station *sta_new = container_of_safe(node_new, struct wireless_station, node);
1023         struct wireless_interface *vif = container_of(tree, struct wireless_interface, stations);
1024         struct wireless_device *wdev = vif->wdev;
1025 
1026         if (sta_old && sta_new) {
1027                 free((void *) sta_old->section);
1028                 sta_old->section = strdup(sta_new->section);
1029                 if (blob_attr_equal(sta_old->config, sta_new->config)) {
1030                         free(sta_new);
1031                         return;
1032                 }
1033 
1034                 D(WIRELESS, "Update wireless station %s on device %s", sta_new->name, wdev->name);
1035                 free(sta_old->config);
1036                 sta_old->config = blob_memdup(sta_new->config);
1037                 free(sta_new);
1038         } else if (sta_new) {
1039                 D(WIRELESS, "Create new wireless station %s on device %s", sta_new->name, wdev->name);
1040                 sta_new->section = strdup(sta_new->section);
1041                 sta_new->config = blob_memdup(sta_new->config);
1042         } else if (sta_old) {
1043                 D(WIRELESS, "Delete wireless station %s on device %s", sta_old->name, wdev->name);
1044                 free((void *) sta_old->section);
1045                 free(sta_old->config);
1046                 free(sta_old);
1047         }
1048 
1049         wdev->config_update = true;
1050 }
1051 
1052 static void
1053 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
1054 {
1055         struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
1056         char buf[128];
1057 
1058         while (1) {
1059                 int b = read(fd->fd, buf, sizeof(buf));
1060                 if (b < 0) {
1061                         if (errno == EINTR)
1062                                 continue;
1063 
1064                         if (errno == EAGAIN)
1065                                 return;
1066 
1067                         goto done;
1068                 }
1069 
1070                 if (!b)
1071                         goto done;
1072         }
1073 
1074 done:
1075         uloop_timeout_set(&wdev->script_check, 0);
1076         wireless_close_script_proc_fd(wdev);
1077 }
1078 
1079 /* watchdog and garbage collector for wireless processes.
1080  * It cleans up terminated processes. If a process is a requirement for the wireless device, it retries the setup */
1081 static void
1082 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
1083 {
1084         struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
1085         struct wireless_process *proc, *tmp;
1086         bool restart = false;
1087 
1088         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
1089                 if (wireless_process_check(proc))
1090                         continue;
1091 
1092                 D(WIRELESS, "Wireless device '%s' pid %d has terminated", wdev->name, proc->pid);
1093                 if (proc->required)
1094                         restart = true;
1095 
1096                 wireless_process_free(wdev, proc);
1097         }
1098 
1099         if (restart)
1100                 wireless_device_retry_setup(wdev);
1101         else
1102                 uloop_timeout_set(&wdev->script_check, 1000);
1103 }
1104 
1105 /* creates a wireless device object. Called by config */
1106 void
1107 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
1108 {
1109         struct wireless_device *wdev;
1110         char *name_buf;
1111         struct blob_attr *tb[__WDEV_ATTR_MAX];
1112         struct blob_attr *cur;
1113 
1114         blobmsg_parse_attr(wdev_policy, __WDEV_ATTR_MAX, tb, data);
1115 
1116         wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
1117 
1118         cur = tb[WDEV_ATTR_DISABLED];
1119         wdev->disabled = cur && blobmsg_get_bool(cur);
1120 
1121         wdev->drv = drv;
1122         wdev->state = IFS_DOWN;
1123         wdev->config_state = IFC_NORMAL;
1124         wdev->name = strcpy(name_buf, name);
1125         wdev->config = data;
1126         wdev->handler_pending = false;
1127 
1128         cur = tb[WDEV_ATTR_SERIALIZE];
1129         wdev->serialize = cur && blobmsg_get_bool(cur);
1130 
1131         cur = tb[WDEV_ATTR_RECONF];
1132         wdev->reconf = !cur || blobmsg_get_bool(cur);
1133 
1134         wdev->retry_setup_failed = false;
1135         wdev->autostart = true;
1136         INIT_LIST_HEAD(&wdev->script_proc);
1137         vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
1138         wdev->interfaces.keep_old = true;
1139 
1140         wdev->timeout.cb = wireless_device_setup_timeout;
1141         wdev->script_task.cb = wireless_device_script_task_cb;
1142         wdev->script_task.dir_fd = drv_fd;
1143         wdev->script_task.log_prefix = wdev->name;
1144 
1145         wdev->script_proc_fd.fd = -1;
1146         wdev->script_proc_fd.cb = wireless_proc_poll_fd;
1147 
1148         wdev->script_check.cb = wireless_device_check_script_tasks;
1149 
1150         vlist_add(&wireless_devices, &wdev->node, wdev->name);
1151 }
1152 
1153 /* creates a wireless station object. Called by config */
1154 void
1155 wireless_station_create(struct wireless_interface *vif, struct blob_attr *data, const char *section)
1156 {
1157         struct wireless_station *sta;
1158         struct blob_attr *tb[__STA_ATTR_MAX];
1159         struct blob_attr *cur;
1160         char *name_buf;
1161         char name[8];
1162 
1163         blobmsg_parse_attr(sta_policy, __STA_ATTR_MAX, tb, data);
1164 
1165         cur = tb[STA_ATTR_DISABLED];
1166         if (cur && blobmsg_get_bool(cur))
1167                 return;
1168 
1169         sprintf(name, "%d", vif->sta_idx++);
1170 
1171         sta = calloc_a(sizeof(*sta),
1172                        &name_buf, strlen(name) + 1);
1173         sta->name = strcpy(name_buf, name);
1174         sta->config = data;
1175         sta->section = section;
1176 
1177         vlist_add(&vif->stations, &sta->node, sta->name);
1178 }
1179 
1180 /* ubus callback network.wireless.status, runs for every interface, encode the station */
1181 static void
1182 wireless_station_status(struct wireless_station *sta, struct blob_buf *b)
1183 {
1184         void *i;
1185 
1186         i = blobmsg_open_table(b, NULL);
1187         if (sta->section)
1188                 blobmsg_add_string(b, "section", sta->section);
1189         put_container(b, sta->config, "config");
1190         blobmsg_close_table(b, i);
1191 }
1192 
1193 /* create a vlan object. Called by config */
1194 void
1195 wireless_vlan_create(struct wireless_interface *vif, struct blob_attr *data, const char *section)
1196 {
1197         struct wireless_vlan *vlan;
1198         struct blob_attr *tb[__VLAN_ATTR_MAX];
1199         struct blob_attr *cur;
1200         char *name_buf;
1201         char name[8];
1202 
1203         blobmsg_parse_attr(vlan_policy, __VLAN_ATTR_MAX, tb, data);
1204 
1205         cur = tb[VLAN_ATTR_DISABLED];
1206         if (cur && blobmsg_get_bool(cur))
1207                 return;
1208 
1209         sprintf(name, "%d", vif->vlan_idx++);
1210 
1211         vlan = calloc_a(sizeof(*vlan), &name_buf, strlen(name) + 1);
1212         vlan->name = strcpy(name_buf, name);
1213         vlan->config = data;
1214         vlan->section = section;
1215 
1216         vlist_add(&vif->vlans, &vlan->node, vlan->name);
1217 }
1218 
1219 /* ubus callback network.wireless.status, runs for every interface, encode the vlan informations */
1220 static void
1221 wireless_vlan_status(struct wireless_vlan *vlan, struct blob_buf *b)
1222 {
1223         void *i;
1224 
1225         i = blobmsg_open_table(b, NULL);
1226         if (vlan->section)
1227                 blobmsg_add_string(b, "section", vlan->section);
1228         if (vlan->ifname)
1229                 blobmsg_add_string(b, "ifname", vlan->ifname);
1230         put_container(b, vlan->config, "config");
1231         blobmsg_close_table(b, i);
1232 }
1233 
1234 /* create a wireless interface object. Called by config */
1235 struct wireless_interface* wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
1236 {
1237         struct wireless_interface *vif;
1238         struct blob_attr *tb[__VIF_ATTR_MAX];
1239         struct blob_attr *cur;
1240         char *name_buf;
1241         char name[8];
1242 
1243         blobmsg_parse_attr(vif_policy, __VIF_ATTR_MAX, tb, data);
1244 
1245         cur = tb[VIF_ATTR_DISABLED];
1246         if (cur && blobmsg_get_bool(cur))
1247                 return NULL;
1248 
1249         sprintf(name, "%d", wdev->vif_idx++);
1250 
1251         vif = calloc_a(sizeof(*vif),
1252                        &name_buf, strlen(name) + 1);
1253         vif->name = strcpy(name_buf, name);
1254         vif->wdev = wdev;
1255         vif->config = data;
1256         vif->section = section;
1257         vif->isolate = false;
1258 
1259         vlist_init(&vif->vlans, avl_strcmp, vlan_update);
1260         vif->vlans.keep_old = true;
1261 
1262         vlist_init(&vif->stations, avl_strcmp, station_update);
1263         vif->stations.keep_old = true;
1264 
1265         vlist_add(&wdev->interfaces, &vif->node, vif->name);
1266 
1267         vif = vlist_find(&wdev->interfaces, name, vif, node);
1268         if (!vif)
1269                 return NULL;
1270 
1271         vif->vlan_idx = vif->sta_idx = 0;
1272         vlist_update(&vif->vlans);
1273         vlist_update(&vif->stations);
1274 
1275         return vif;
1276 }
1277 
1278 /* ubus callback network.wireless.status, runs for every interface */
1279 static void
1280 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
1281 {
1282         struct wireless_vlan *vlan;
1283         struct wireless_station *sta;
1284         void *i, *j;
1285 
1286         i = blobmsg_open_table(b, NULL);
1287         if (iface->section)
1288                 blobmsg_add_string(b, "section", iface->section);
1289         if (iface->ifname)
1290                 blobmsg_add_string(b, "ifname", iface->ifname);
1291         put_container(b, iface->config, "config");
1292         j = blobmsg_open_array(b, "vlans");
1293         vlist_for_each_element(&iface->vlans, vlan, node)
1294                 wireless_vlan_status(vlan, b);
1295         blobmsg_close_array(b, j);
1296         j = blobmsg_open_array(b, "stations");
1297         vlist_for_each_element(&iface->stations, sta, node)
1298                 wireless_station_status(sta, b);
1299         blobmsg_close_array(b, j);
1300         blobmsg_close_table(b, i);
1301 }
1302 
1303 /* ubus callback network.wireless.status */
1304 void
1305 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
1306 {
1307         struct wireless_interface *iface;
1308         void *c, *i;
1309 
1310         c = blobmsg_open_table(b, wdev->name);
1311         blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
1312         blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
1313         blobmsg_add_u8(b, "autostart", wdev->autostart);
1314         blobmsg_add_u8(b, "disabled", wdev->disabled);
1315         blobmsg_add_u8(b, "retry_setup_failed", wdev->retry_setup_failed);
1316         put_container(b, wdev->config, "config");
1317 
1318         i = blobmsg_open_array(b, "interfaces");
1319         vlist_for_each_element(&wdev->interfaces, iface, node)
1320                 wireless_interface_status(iface, b);
1321         blobmsg_close_array(b, i);
1322         blobmsg_close_table(b, c);
1323 }
1324 
1325 /* ubus callback network.wireless.get_validate */
1326 void
1327 wireless_device_get_validate(struct wireless_device *wdev, struct blob_buf *b)
1328 {
1329         struct uci_blob_param_list *p;
1330         void *c, *d;
1331         int i;
1332 
1333         c = blobmsg_open_table(b, wdev->name);
1334 
1335         d = blobmsg_open_table(b, "device");
1336         p = wdev->drv->device.config;
1337         for (i = 0; i < p->n_params; i++)
1338                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1339         blobmsg_close_table(b, d);
1340 
1341         d = blobmsg_open_table(b, "interface");
1342         p = wdev->drv->interface.config;
1343         for (i = 0; i < p->n_params; i++)
1344                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1345         blobmsg_close_table(b, d);
1346 
1347         blobmsg_close_table(b, c);
1348 }
1349 
1350 /* ubus callback network.wireless.notify, command = set data, for vif */
1351 static void
1352 wireless_interface_set_data(struct wireless_interface *vif)
1353 {
1354         enum {
1355                 VIF_DATA_IFNAME,
1356                 __VIF_DATA_MAX,
1357         };
1358         static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
1359                 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1360         };
1361         struct blob_attr *tb[__VIF_DATA_MAX];
1362         struct blob_attr *cur;
1363 
1364         blobmsg_parse_attr(data_policy, __VIF_DATA_MAX, tb, vif->data);
1365 
1366         if ((cur = tb[VIF_DATA_IFNAME]))
1367                 vif->ifname = blobmsg_data(cur);
1368 }
1369 
1370 /* ubus callback network.wireless.notify, command = set data, for vlan */
1371 static void
1372 wireless_vlan_set_data(struct wireless_vlan *vlan)
1373 {
1374         enum {
1375                 VLAN_DATA_IFNAME,
1376                 __VLAN_DATA_MAX,
1377         };
1378         static const struct blobmsg_policy data_policy[__VLAN_DATA_MAX] = {
1379                 [VLAN_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1380         };
1381         struct blob_attr *tb[__VLAN_DATA_MAX];
1382         struct blob_attr *cur;
1383 
1384         blobmsg_parse_attr(data_policy, __VLAN_DATA_MAX, tb, vlan->data);
1385 
1386         if ((cur = tb[VLAN_DATA_IFNAME]))
1387                 vlan->ifname = blobmsg_data(cur);
1388 }
1389 
1390 /* ubus callback network.wireless.notify, command = process add */
1391 static int
1392 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
1393 {
1394         enum {
1395                 PROC_ATTR_PID,
1396                 PROC_ATTR_EXE,
1397                 PROC_ATTR_REQUIRED,
1398                 PROC_ATTR_KEEP,
1399                 __PROC_ATTR_MAX
1400         };
1401         static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
1402                 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
1403                 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
1404                 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
1405                 [PROC_ATTR_KEEP] = { .name = "keep", .type = BLOBMSG_TYPE_BOOL },
1406         };
1407         struct blob_attr *tb[__PROC_ATTR_MAX];
1408         struct wireless_process *proc;
1409         char *name;
1410         int pid;
1411 
1412         if (!data)
1413                 return UBUS_STATUS_INVALID_ARGUMENT;
1414 
1415         blobmsg_parse_attr(proc_policy, __PROC_ATTR_MAX, tb, data);
1416         if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
1417                 return UBUS_STATUS_INVALID_ARGUMENT;
1418 
1419         pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
1420         if (pid < 2)
1421                 return UBUS_STATUS_INVALID_ARGUMENT;
1422 
1423         proc = calloc_a(sizeof(*proc),
1424                 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
1425 
1426         proc->pid = pid;
1427         proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
1428 
1429         if (tb[PROC_ATTR_REQUIRED])
1430                 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
1431 
1432         if (tb[PROC_ATTR_KEEP])
1433                 proc->keep = blobmsg_get_bool(tb[PROC_ATTR_KEEP]);
1434 
1435         D(WIRELESS, "Wireless device '%s' add pid %d", wdev->name, proc->pid);
1436         list_add(&proc->list, &wdev->script_proc);
1437         uloop_timeout_set(&wdev->script_check, 0);
1438 
1439         return 0;
1440 }
1441 
1442 /* ubus callback network.wireless.notify, command = process kill all */
1443 static int
1444 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
1445                                  struct ubus_request_data *req)
1446 {
1447         enum {
1448                 KILL_ATTR_SIGNAL,
1449                 KILL_ATTR_IMMEDIATE,
1450                 __KILL_ATTR_MAX
1451         };
1452         static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
1453                 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
1454                 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
1455         };
1456         struct blob_attr *tb[__KILL_ATTR_MAX];
1457         struct blob_attr *cur;
1458         bool immediate = false;
1459         int signal = SIGTERM;
1460 
1461         blobmsg_parse_attr(kill_policy, __KILL_ATTR_MAX, tb, data);
1462 
1463         if ((cur = tb[KILL_ATTR_SIGNAL]))
1464                 signal = blobmsg_get_u32(cur);
1465 
1466         if ((cur = tb[KILL_ATTR_IMMEDIATE]))
1467                 immediate = blobmsg_get_bool(cur);
1468 
1469         if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
1470                 return UBUS_STATUS_PERMISSION_DENIED;
1471 
1472         wireless_process_kill_all(wdev, signal, immediate);
1473 
1474         if (list_empty(&wdev->script_proc))
1475                 return 0;
1476 
1477         wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
1478         ubus_defer_request(ubus_ctx, req, wdev->kill_request);
1479 
1480         return 0;
1481 }
1482 
1483 /* ubus callback network.wireless.notify, command = set_retry */
1484 static int
1485 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
1486 {
1487         static const struct blobmsg_policy retry_policy = {
1488                 .name = "retry", .type = BLOBMSG_TYPE_INT32
1489         };
1490         struct blob_attr *val;
1491 
1492         blobmsg_parse_attr(&retry_policy, 1, &val, data);
1493         if (val)
1494                 wdev->retry = blobmsg_get_u32(val);
1495         else
1496                 wdev->retry = WIRELESS_SETUP_RETRY;
1497         __wireless_device_set_up(wdev, 0);
1498         netifd_log_message(L_NOTICE, "Wireless device '%s' set retry=%d\n", wdev->name, wdev->retry);
1499         return 0;
1500 }
1501 
1502 enum {
1503         NOTIFY_CMD_UP = 0,
1504         NOTIFY_CMD_SET_DATA = 1,
1505         NOTIFY_CMD_PROCESS_ADD = 2,
1506         NOTIFY_CMD_PROCESS_KILL_ALL = 3,
1507         NOTIFY_CMD_SET_RETRY = 4,
1508 };
1509 
1510 /* ubus callback network.wireless.notify */
1511 int
1512 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
1513                        struct ubus_request_data *req)
1514 {
1515         enum {
1516                 NOTIFY_ATTR_COMMAND,
1517                 NOTIFY_ATTR_VIF,
1518                 NOTIFY_ATTR_VLAN,
1519                 NOTIFY_ATTR_DATA,
1520                 __NOTIFY_MAX,
1521         };
1522         static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
1523                 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
1524                 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
1525                 [NOTIFY_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_STRING },
1526                 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
1527         };
1528         struct wireless_interface *vif = NULL;
1529         struct wireless_vlan *vlan = NULL;
1530         struct blob_attr *tb[__NOTIFY_MAX];
1531         struct blob_attr *cur, **pdata;
1532 
1533         blobmsg_parse_attr(notify_policy, __NOTIFY_MAX, tb, data);
1534 
1535         if (!tb[NOTIFY_ATTR_COMMAND])
1536                 return UBUS_STATUS_INVALID_ARGUMENT;
1537 
1538         if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
1539                 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
1540                 if (!vif)
1541                         return UBUS_STATUS_NOT_FOUND;
1542         }
1543 
1544         if ((cur = tb[NOTIFY_ATTR_VLAN]) != NULL) {
1545                 if (!vif)
1546                         return UBUS_STATUS_NOT_FOUND;
1547                 vlan = vlist_find(&vif->vlans, blobmsg_data(cur), vlan, node);
1548                 if (!vlan)
1549                         return UBUS_STATUS_NOT_FOUND;
1550         }
1551 
1552         cur = tb[NOTIFY_ATTR_DATA];
1553         if (!cur)
1554                 return UBUS_STATUS_INVALID_ARGUMENT;
1555 
1556         switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
1557         case NOTIFY_CMD_UP:
1558                 if (vif || vlan)
1559                         return UBUS_STATUS_INVALID_ARGUMENT;
1560 
1561                 if (wdev->state != IFS_SETUP)
1562                         return UBUS_STATUS_PERMISSION_DENIED;
1563 
1564                 wireless_device_mark_up(wdev);
1565                 break;
1566         case NOTIFY_CMD_SET_DATA:
1567                 if (vlan)
1568                         pdata = &vlan->data;
1569                 else if (vif)
1570                         pdata = &vif->data;
1571                 else
1572                         pdata = &wdev->data;
1573 
1574                 free(*pdata);
1575                 *pdata = blob_memdup(cur);
1576                 if (vlan)
1577                         wireless_vlan_set_data(vlan);
1578                 else if (vif)
1579                         wireless_interface_set_data(vif);
1580                 wdev_prepare_prev_config(wdev);
1581                 break;
1582         case NOTIFY_CMD_PROCESS_ADD:
1583                 return wireless_device_add_process(wdev, cur);
1584         case NOTIFY_CMD_PROCESS_KILL_ALL:
1585                 return wireless_device_process_kill_all(wdev, cur, req);
1586         case NOTIFY_CMD_SET_RETRY:
1587                 return wireless_device_set_retry(wdev, cur);
1588         default:
1589                 return UBUS_STATUS_INVALID_ARGUMENT;
1590         }
1591 
1592         return 0;
1593 }
1594 
1595 static void
1596 wdev_vlan_check_network_enabled(struct wireless_device *wdev,
1597                                 struct wireless_interface *vif)
1598 {
1599         struct wireless_vlan *vlan;
1600 
1601         vlist_for_each_element(&vif->vlans, vlan, node) {
1602                 int enabled = -1, ifindex = -1;
1603 
1604                 wireless_check_interface(vlan->network, &enabled, &ifindex);
1605 
1606                 if (wdev->state != IFS_UP || vlan->network_ifindex == ifindex)
1607                         continue;
1608 
1609                 vlan->network_ifindex = ifindex;
1610                 wdev->config_update = true;
1611         }
1612 }
1613 
1614 static void
1615 wdev_check_network_enabled(struct wireless_device *wdev)
1616 {
1617         struct wireless_interface *vif;
1618 
1619         vlist_for_each_element(&wdev->interfaces, vif, node) {
1620                 int enabled = -1, ifindex = -1;
1621 
1622                 wireless_check_interface(vif->network, &enabled, &ifindex);
1623                 wdev_vlan_check_network_enabled(wdev, vif);
1624 
1625                 if (vif->disabled == !enabled &&
1626                     (wdev->state != IFS_UP || vif->network_ifindex == ifindex))
1627                         continue;
1628 
1629                 vif->disabled = !enabled;
1630                 vif->network_ifindex = ifindex;
1631                 wdev->config_update = true;
1632         }
1633 }
1634 
1635 static void
1636 __wireless_start_pending(struct uloop_timeout *t)
1637 {
1638         struct wireless_device *wdev;
1639 
1640         vlist_for_each_element(&wireless_devices, wdev, node) {
1641                 wdev_check_network_enabled(wdev);
1642                 if (wdev->config_update)
1643                         wdev_set_config_state(wdev, IFC_RELOAD);
1644                 __wireless_device_set_up(wdev, 0);
1645         }
1646 }
1647 
1648 void wireless_start_pending(int timeout)
1649 {
1650         static struct uloop_timeout timer = {
1651                 .cb = __wireless_start_pending
1652         };
1653 
1654         if (timeout) {
1655                 uloop_timeout_set(&timer, timeout);
1656                 return;
1657         }
1658 
1659         uloop_timeout_cancel(&timer);
1660         timer.cb(&timer);
1661 }
1662 
1663 void wireless_check_network_enabled(void)
1664 {
1665         struct wireless_device *wdev;
1666 
1667         vlist_for_each_element(&wireless_devices, wdev, node) {
1668                 wdev_check_network_enabled(wdev);
1669 
1670                 if (wdev->config_update)
1671                         wireless_start_pending(1000);
1672         }
1673 }
1674 
1675 void wireless_device_hotplug_event(const char *name, bool add)
1676 {
1677         struct wireless_interface *vif;
1678         struct wireless_device *wdev;
1679         const char *s;
1680         size_t len;
1681 
1682         s = strstr(name, ".sta");
1683         if (s) {
1684                 if (strchr(s + 4, '.'))
1685                         return;
1686 
1687                 len = s - name;
1688         } else {
1689                 len = strlen(name);
1690         }
1691 
1692         vlist_for_each_element(&wireless_devices, wdev, node) {
1693                 vlist_for_each_element(&wdev->interfaces, vif, node) {
1694                         if (!vif->ifname)
1695                                 continue;
1696 
1697                         if (strlen(vif->ifname) != len ||
1698                             strncmp(vif->ifname, name, len) != 0)
1699                                 continue;
1700 
1701                         wireless_interface_handle_link(vif, name, add);
1702                 }
1703         }
1704 }
1705 

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