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