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