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