wireless.c

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 /* The wireless configuration is projected on the following objects
  16  *
  17  * 1. wireless device
  18  * 2. wireless interface
  19  * 3. wireless vlan
  20  * 4. wireless station
  21  *
  22  * A wireless device is a phy or simplified a wireless card.
  23  * A wireless interface is a SSID on a phy.
  24  * A wireless vlan can be assigned to a wireless interface. A wireless interface can
  25  *   have multiple vlans.
  26  * A wireless station is a client connected to an wireless interface.
  27  */
  28
  29 #include <signal.h>
  30 #include "netifd.h"
  31 #include "wireless.h"
  32 #include "handler.h"
  33 #include "ubus.h"
  34
  35 #define WIRELESS_SETUP_RETRY    3
  36
  37 struct vlist_tree wireless_devices;
  38 struct avl_tree wireless_drivers;
  39 static struct blob_buf b;
  40 static int drv_fd;
  41 static LIST_HEAD(handlers);
  42 static bool handler_pending;
  43
  44 enum {
  45         WDEV_ATTR_DISABLED,
  46         WDEV_ATTR_RECONF,
  47         WDEV_ATTR_SERIALIZE,
  48         __WDEV_ATTR_MAX,
  49 };
  50
  51 static const struct blobmsg_policy wdev_policy[__WDEV_ATTR_MAX] = {
  52         [WDEV_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  53         [WDEV_ATTR_RECONF] = { .name = "reconf", .type = BLOBMSG_TYPE_BOOL },
  54         [WDEV_ATTR_SERIALIZE] = { .name = "serialize", .type = BLOBMSG_TYPE_BOOL },
  55 };
  56
  57 static const struct uci_blob_param_list wdev_param = {
  58         .n_params = ARRAY_SIZE(wdev_policy),
  59         .params = wdev_policy,
  60 };
  61
  62 enum {
  63         VIF_ATTR_DISABLED,
  64         VIF_ATTR_NETWORK,
  65         VIF_ATTR_NETWORK_VLAN,
  66         VIF_ATTR_ISOLATE,
  67         VIF_ATTR_MODE,
  68         VIF_ATTR_PROXYARP,
  69         VIF_ATTR_MCAST_TO_UCAST,
  70         __VIF_ATTR_MAX,
  71 };
  72
  73 static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
  74         [VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  75         [VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
  76         [VIF_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
  77         [VIF_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
  78         [VIF_ATTR_MODE] = { .name = "mode", .type = BLOBMSG_TYPE_STRING },
  79         [VIF_ATTR_PROXYARP] = { .name = "proxy_arp", .type = BLOBMSG_TYPE_BOOL },
  80         [VIF_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
  81 };
  82
  83 static const struct uci_blob_param_list vif_param = {
  84         .n_params = ARRAY_SIZE(vif_policy),
  85         .params = vif_policy,
  86 };
  87
  88 enum {
  89         VLAN_ATTR_DISABLED,
  90         VLAN_ATTR_NETWORK,
  91         VLAN_ATTR_NETWORK_VLAN,
  92         VLAN_ATTR_ISOLATE,
  93         VLAN_ATTR_MCAST_TO_UCAST,
  94         __VLAN_ATTR_MAX,
  95 };
  96
  97 static const struct blobmsg_policy vlan_policy[__VLAN_ATTR_MAX] = {
  98         [VLAN_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  99         [VLAN_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
 100         [VLAN_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
 101         [VLAN_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
 102         [VLAN_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
 103 };
 104
 105 static const struct uci_blob_param_list vlan_param = {
 106         .n_params = ARRAY_SIZE(vlan_policy),
 107         .params = vlan_policy,
 108 };
 109
 110 enum {
 111         STA_ATTR_DISABLED,
 112         __STA_ATTR_MAX,
 113 };
 114
 115 static const struct blobmsg_policy sta_policy[__STA_ATTR_MAX] = {
 116         [STA_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
 117 };
 118
 119 static const struct uci_blob_param_list station_param = {
 120         .n_params = ARRAY_SIZE(sta_policy),
 121         .params = sta_policy,
 122 };
 123
 124 static void
 125 wireless_handler_stop(struct wireless_device *wdev)
 126 {
 127         if (wdev->handler_pending) {
 128                 wdev->handler_pending = false;
 129                 list_del(&wdev->handler);
 130         }
 131 }
 132
 133 static void
 134 put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
 135 {
 136         void *c = blobmsg_open_table(buf, name);
 137         blob_put_raw(buf, blob_data(attr), blob_len(attr));
 138         blobmsg_close_table(buf, c);
 139 }
 140
 141 static void
 142 vif_config_add_bridge(struct blob_buf *buf, struct blob_attr *networks, bool prepare)
 143 {
 144         struct interface *iface;
 145         struct device *dev = NULL, *orig_dev;
 146         struct blob_attr *cur;
 147         const char *network;
 148         size_t rem;
 149
 150         if (!networks)
 151                 return;
 152
 153         blobmsg_for_each_attr(cur, networks, rem) {
 154                 network = blobmsg_data(cur);
 155
 156                 iface = vlist_find(&interfaces, network, iface, node);
 157                 if (!iface)
 158                         continue;
 159
 160                 dev = iface->main_dev.dev;
 161                 if (!dev)
 162                         return;
 163
 164                 if (!dev->hotplug_ops)
 165                         return;
 166         }
 167
 168         if (!dev)
 169                 return;
 170
 171         orig_dev = dev;
 172         if (dev->hotplug_ops && dev->hotplug_ops->prepare)
 173                 dev->hotplug_ops->prepare(dev, &dev);
 174
 175         if (!dev || !dev->type->bridge_capability)
 176                 return;
 177
 178         blobmsg_add_string(buf, "bridge", dev->ifname);
 179         blobmsg_add_string(buf, "bridge-ifname", orig_dev->ifname);
 180
 181         if (dev->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST)
 182                 blobmsg_add_u8(buf, "multicast_to_unicast",
 183                                dev->settings.multicast_to_unicast);
 184 }
 185
 186 static void
 187 prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
 188 {
 189         struct wireless_interface *vif;
 190         struct wireless_vlan *vlan;
 191         struct wireless_station *sta;
 192         void *l, *i, *j, *k;
 193
 194         blob_buf_init(&b, 0);
 195         put_container(&b, wdev->config, "config");
 196         if (wdev->data)
 197                 blobmsg_add_blob(&b, wdev->data);
 198
 199         l = blobmsg_open_table(&b, "interfaces");
 200         vlist_for_each_element(&wdev->interfaces, vif, node) {
 201                 i = blobmsg_open_table(&b, vif->name);
 202                 vif_config_add_bridge(&b, vif->network, up);
 203                 put_container(&b, vif->config, "config");
 204                 if (vif->data)
 205                         blobmsg_add_blob(&b, vif->data);
 206
 207                 j = blobmsg_open_table(&b, "vlans");
 208                 vlist_for_each_element(&wdev->vlans, vlan, node) {
 209                         if (strcmp(vlan->vif, vif->name))
 210                                 continue;
 211                         k = blobmsg_open_table(&b, vlan->name);
 212                         vif_config_add_bridge(&b, vlan->network, up);
 213                         put_container(&b, vlan->config, "config");
 214                         if (vlan->data)
 215                                 blobmsg_add_blob(&b, vlan->data);
 216                         blobmsg_close_table(&b, k);
 217                 }
 218                 blobmsg_close_table(&b, j);
 219
 220                 j = blobmsg_open_table(&b, "stas");
 221                 vlist_for_each_element(&wdev->stations, sta, node) {
 222                         if (strcmp(sta->vif, vif->name))
 223                                 continue;
 224                         k = blobmsg_open_table(&b, sta->name);
 225                         put_container(&b, sta->config, "config");
 226                         if (sta->data)
 227                                 blobmsg_add_blob(&b, sta->data);
 228                         blobmsg_close_table(&b, k);
 229                 }
 230                 blobmsg_close_table(&b, j);
 231                 blobmsg_close_table(&b, i);
 232         }
 233         blobmsg_close_table(&b, l);
 234
 235 }
 236
 237 static bool
 238 wireless_process_check(struct wireless_process *proc)
 239 {
 240         return check_pid_path(proc->pid, proc->exe);
 241 }
 242
 243 static void
 244 wireless_complete_kill_request(struct wireless_device *wdev)
 245 {
 246         if (!wdev->kill_request)
 247                 return;
 248
 249         ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
 250         free(wdev->kill_request);
 251         wdev->kill_request = NULL;
 252 }
 253
 254 static void
 255 wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
 256 {
 257         D(WIRELESS, "Wireless device '%s' free pid %d\n", wdev->name, proc->pid);
 258         list_del(&proc->list);
 259         free(proc);
 260
 261         if (list_empty(&wdev->script_proc))
 262                 wireless_complete_kill_request(wdev);
 263 }
 264
 265 static void
 266 wireless_close_script_proc_fd(struct wireless_device *wdev)
 267 {
 268         if (wdev->script_proc_fd.fd < 0)
 269                 return;
 270
 271         uloop_fd_delete(&wdev->script_proc_fd);
 272         close(wdev->script_proc_fd.fd);
 273         wdev->script_proc_fd.fd = -1;
 274 }
 275
 276 static void
 277 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
 278 {
 279         struct wireless_process *proc, *tmp;
 280
 281         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
 282                 bool check = wireless_process_check(proc);
 283
 284                 if (check && !proc->keep) {
 285                         D(WIRELESS, "Wireless device '%s' kill pid %d\n", wdev->name, proc->pid);
 286                         kill(proc->pid, signal);
 287                 }
 288
 289                 if (free || !check)
 290                         wireless_process_free(wdev, proc);
 291         }
 292
 293         if (free)
 294                 wireless_close_script_proc_fd(wdev);
 295 }
 296
 297 static void
 298 wireless_device_free_state(struct wireless_device *wdev)
 299 {
 300         struct wireless_interface *vif;
 301         struct wireless_vlan *vlan;
 302         struct wireless_station *sta;
 303
 304         wireless_handler_stop(wdev);
 305         uloop_timeout_cancel(&wdev->script_check);
 306         uloop_timeout_cancel(&wdev->timeout);
 307         wireless_complete_kill_request(wdev);
 308         free(wdev->data);
 309         wdev->data = NULL;
 310         vlist_for_each_element(&wdev->interfaces, vif, node) {
 311                 free(vif->data);
 312                 vif->data = NULL;
 313                 vif->ifname = NULL;
 314         }
 315         vlist_for_each_element(&wdev->vlans, vlan, node) {
 316                 free(vlan->data);
 317                 vlan->data = NULL;
 318                 vlan->ifname = NULL;
 319         }
 320         vlist_for_each_element(&wdev->stations, sta, node) {
 321                 free(sta->data);
 322                 sta->data = NULL;
 323         }
 324 }
 325
 326 static void wireless_device_set_mcast_to_unicast(struct device *dev, int val)
 327 {
 328         if (val < 0) {
 329                 dev->settings.flags &= ~DEV_OPT_MULTICAST_TO_UNICAST;
 330                 return;
 331         }
 332
 333         dev->settings.multicast_to_unicast = !!val;
 334         dev->settings.flags |= DEV_OPT_MULTICAST_TO_UNICAST;
 335 }
 336
 337 static void wireless_interface_handle_link(struct wireless_interface *vif, const char *ifname, bool up)
 338 {
 339         struct interface *iface;
 340         struct blob_attr *cur;
 341         const char *network;
 342         size_t rem;
 343
 344         if (!vif->network || !vif->ifname)
 345                 return;
 346
 347         if (!ifname)
 348                 ifname = vif->ifname;
 349
 350         if (up) {
 351                 struct device *dev = __device_get(ifname, 2, false);
 352
 353                 if (dev && !strcmp(ifname, vif->ifname)) {
 354                         dev->wireless_isolate = vif->isolate;
 355                         dev->wireless_proxyarp = vif->proxyarp;
 356                         dev->wireless = true;
 357                         dev->wireless_ap = vif->ap_mode;
 358                         wireless_device_set_mcast_to_unicast(dev, vif->multicast_to_unicast);
 359                         dev->bpdu_filter = dev->wireless_ap;
 360                 }
 361         }
 362
 363         blobmsg_for_each_attr(cur, vif->network, rem) {
 364                 network = blobmsg_data(cur);
 365
 366                 iface = vlist_find(&interfaces, network, iface, node);
 367                 if (!iface)
 368                         continue;
 369
 370                 interface_handle_link(iface, ifname, vif->network_vlan, up, true);
 371         }
 372 }
 373
 374 static void wireless_vlan_handle_link(struct wireless_vlan *vlan, bool up)
 375 {
 376         struct interface *iface;
 377         struct blob_attr *cur;
 378         const char *network;
 379         size_t rem;
 380
 381         if (!vlan->network || !vlan->ifname)
 382                 return;
 383
 384         if (up) {
 385                 struct device *dev = device_get(vlan->ifname, 2);
 386                 if (dev) {
 387                         dev->wireless_isolate = vlan->isolate;
 388                         dev->wireless = true;
 389                         dev->wireless_ap = true;
 390                         dev->bpdu_filter = true;
 391                         wireless_device_set_mcast_to_unicast(dev, vlan->multicast_to_unicast);
 392                 }
 393         }
 394
 395         blobmsg_for_each_attr(cur, vlan->network, rem) {
 396                 network = blobmsg_data(cur);
 397
 398                 iface = vlist_find(&interfaces, network, iface, node);
 399                 if (!iface)
 400                         continue;
 401
 402                 interface_handle_link(iface, vlan->ifname, vlan->network_vlan, up, true);
 403         }
 404 }
 405
 406 static void
 407 wireless_device_setup_cancel(struct wireless_device *wdev)
 408 {
 409         if (wdev->cancel)
 410                 return;
 411
 412         wireless_handler_stop(wdev);
 413         D(WIRELESS, "Cancel wireless device '%s' setup\n", wdev->name);
 414         wdev->cancel = true;
 415         uloop_timeout_set(&wdev->timeout, 10 * 1000);
 416 }
 417
 418 static void
 419 wireless_device_run_handler(struct wireless_device *wdev, bool up)
 420 {
 421         const char *action = up ? "setup" : "teardown";
 422         const char *argv[6];
 423         char *config;
 424         int i = 0;
 425         int fds[2] = { -1, -1 };
 426
 427         wireless_handler_stop(wdev);
 428
 429         if (handler_pending && wdev->serialize) {
 430                 wdev->handler_action = up;
 431                 wdev->handler_pending = true;
 432                 list_add_tail(&wdev->handler, &handlers);
 433                 return;
 434         }
 435         if (wdev->serialize)
 436                 handler_pending = true;
 437
 438         D(WIRELESS, "Wireless device '%s' run %s handler\n", wdev->name, action);
 439         if (!up && wdev->prev_config) {
 440                 config = blobmsg_format_json(wdev->prev_config, true);
 441                 free(wdev->prev_config);
 442                 wdev->prev_config = NULL;
 443         } else {
 444                 prepare_config(wdev, &b, up);
 445                 config = blobmsg_format_json(b.head, true);
 446         }
 447
 448         argv[i++] = wdev->drv->script;
 449         argv[i++] = wdev->drv->name;
 450         argv[i++] = action;
 451         argv[i++] = wdev->name;
 452         argv[i++] = config;
 453         argv[i] = NULL;
 454
 455         if (up && pipe(fds) == 0) {
 456                 if (wdev->script_proc_fd.fd >= 0)
 457                         wireless_close_script_proc_fd(wdev);
 458
 459                 wdev->script_proc_fd.fd = fds[0];
 460                 uloop_fd_add(&wdev->script_proc_fd,
 461                              ULOOP_READ | ULOOP_EDGE_TRIGGER);
 462         }
 463
 464         netifd_start_process(argv, NULL, &wdev->script_task);
 465
 466         if (fds[1] >= 0)
 467                 close(fds[1]);
 468
 469         free(config);
 470 }
 471
 472 static void
 473 wireless_handler_next(void)
 474 {
 475         struct wireless_device *wdev;
 476
 477         if (handler_pending)
 478                 return;
 479         if (list_empty(&handlers))
 480                 return;
 481         wdev = list_first_entry(&handlers, struct wireless_device, handler);
 482         list_del(&wdev->handler);
 483         wdev->handler_pending = false;
 484         wireless_device_run_handler(wdev, wdev->handler_action);
 485 }
 486
 487 static void
 488 __wireless_device_set_up(struct wireless_device *wdev, int force)
 489 {
 490         if (wdev->disabled)
 491                 return;
 492
 493         if (wdev->retry_setup_failed)
 494                 return;
 495
 496         if (!wdev->autostart)
 497                 return;
 498
 499         if (!force && (wdev->state != IFS_DOWN || config_init))
 500                 return;
 501
 502         free(wdev->prev_config);
 503         wdev->prev_config = NULL;
 504         wdev->state = IFS_SETUP;
 505         wireless_device_run_handler(wdev, true);
 506 }
 507
 508 static void
 509 wireless_device_free(struct wireless_device *wdev)
 510 {
 511         wireless_handler_stop(wdev);
 512         vlist_flush_all(&wdev->interfaces);
 513         vlist_flush_all(&wdev->vlans);
 514         vlist_flush_all(&wdev->stations);
 515         avl_delete(&wireless_devices.avl, &wdev->node.avl);
 516         free(wdev->config);
 517         free(wdev->prev_config);
 518         free(wdev);
 519 }
 520
 521 static void
 522 wdev_handle_config_change(struct wireless_device *wdev)
 523 {
 524         enum interface_config_state state = wdev->config_state;
 525
 526         switch(state) {
 527         case IFC_RELOAD:
 528                 wdev->retry = WIRELESS_SETUP_RETRY;
 529                 wdev->retry_setup_failed = false;
 530                 fallthrough;
 531         case IFC_NORMAL:
 532                 __wireless_device_set_up(wdev, 0);
 533
 534                 wdev->config_state = IFC_NORMAL;
 535                 break;
 536         case IFC_REMOVE:
 537                 wireless_device_free(wdev);
 538                 break;
 539         }
 540 }
 541
 542 static void
 543 wireless_device_mark_down(struct wireless_device *wdev)
 544 {
 545         struct wireless_interface *vif;
 546         struct wireless_vlan *vlan;
 547
 548         netifd_log_message(L_NOTICE, "Wireless device '%s' is now down\n", wdev->name);
 549
 550         vlist_for_each_element(&wdev->vlans, vlan, node)
 551                 wireless_vlan_handle_link(vlan, false);
 552
 553         vlist_for_each_element(&wdev->interfaces, vif, node)
 554                 wireless_interface_handle_link(vif, NULL, false);
 555
 556         wireless_process_kill_all(wdev, SIGTERM, true);
 557
 558         wdev->cancel = false;
 559         wdev->state = IFS_DOWN;
 560         wireless_device_free_state(wdev);
 561         wdev_handle_config_change(wdev);
 562 }
 563
 564 /* timeout callback to protect the tear down */
 565 static void
 566 wireless_device_setup_timeout(struct uloop_timeout *timeout)
 567 {
 568         struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
 569
 570         if (wdev->handler_pending) {
 571                 wdev->handler_pending = false;
 572                 list_del(&wdev->handler);
 573         }
 574         netifd_kill_process(&wdev->script_task);
 575         wdev->script_task.cb(&wdev->script_task, -1);
 576         wireless_device_mark_down(wdev);
 577 }
 578
 579 void
 580 wireless_device_set_up(struct wireless_device *wdev)
 581 {
 582         wdev->retry = WIRELESS_SETUP_RETRY;
 583         wdev->autostart = true;
 584         __wireless_device_set_up(wdev, 0);
 585 }
 586
 587 void
 588 wireless_device_reconf(struct wireless_device *wdev)
 589 {
 590         wdev->retry = WIRELESS_SETUP_RETRY;
 591         wdev->autostart = true;
 592         __wireless_device_set_up(wdev, wdev->reconf && (wdev->state == IFS_UP));
 593 }
 594
 595 static void
 596 __wireless_device_set_down(struct wireless_device *wdev)
 597 {
 598         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
 599                 return;
 600
 601         if (wdev->script_task.uloop.pending) {
 602                 wireless_device_setup_cancel(wdev);
 603                 return;
 604         }
 605
 606         wdev->state = IFS_TEARDOWN;
 607         wireless_device_run_handler(wdev, false);
 608 }
 609
 610 /* ubus callback network.wireless.notify, command = up */
 611 static void
 612 wireless_device_mark_up(struct wireless_device *wdev)
 613 {
 614         struct wireless_interface *vif;
 615         struct wireless_vlan *vlan;
 616
 617         if (wdev->cancel) {
 618                 wdev->cancel = false;
 619                 __wireless_device_set_down(wdev);
 620                 return;
 621         }
 622
 623         netifd_log_message(L_NOTICE, "Wireless device '%s' is now up\n", wdev->name);
 624         wdev->retry = WIRELESS_SETUP_RETRY;
 625         wdev->state = IFS_UP;
 626         vlist_for_each_element(&wdev->interfaces, vif, node)
 627                 wireless_interface_handle_link(vif, NULL, true);
 628         vlist_for_each_element(&wdev->vlans, vlan, node)
 629                 wireless_vlan_handle_link(vlan, true);
 630 }
 631
 632 static void
 633 wireless_device_retry_setup(struct wireless_device *wdev)
 634 {
 635         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
 636                 return;
 637
 638         netifd_log_message(wdev->retry ? L_WARNING : L_CRIT,
 639                            "Wireless device '%s' setup failed, retry=%d\n",
 640                            wdev->name, wdev->retry);
 641         if (--wdev->retry < 0)
 642                 wdev->retry_setup_failed = true;
 643
 644         __wireless_device_set_down(wdev);
 645 }
 646
 647 static void
 648 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
 649 {
 650         struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
 651
 652         switch (wdev->state) {
 653         case IFS_SETUP:
 654                 wireless_device_retry_setup(wdev);
 655                 break;
 656         case IFS_TEARDOWN:
 657                 wireless_device_mark_down(wdev);
 658                 break;
 659         default:
 660                 break;
 661         }
 662
 663         if (wdev->serialize) {
 664                 handler_pending = false;
 665                 wireless_handler_next();
 666         }
 667 }
 668
 669 void
 670 wireless_device_set_down(struct wireless_device *wdev)
 671 {
 672         wdev->retry_setup_failed = false;
 673         wdev->autostart = false;
 674         __wireless_device_set_down(wdev);
 675 }
 676
 677 static void
 678 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
 679 {
 680         if (wdev->config_state != IFC_NORMAL)
 681                 return;
 682
 683         if (s == IFC_RELOAD && wdev->reconf && wdev->state == IFS_UP) {
 684                 wireless_device_reconf(wdev);
 685                 return;
 686         }
 687
 688         wdev->config_state = s;
 689         if (wdev->state == IFS_DOWN)
 690                 wdev_handle_config_change(wdev);
 691         else
 692                 __wireless_device_set_down(wdev);
 693 }
 694
 695 static void
 696 wdev_prepare_prev_config(struct wireless_device *wdev)
 697 {
 698         if (wdev->prev_config)
 699                 return;
 700
 701         prepare_config(wdev, &b, false);
 702         wdev->prev_config = blob_memdup(b.head);
 703 }
 704
 705 static void
 706 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
 707 {
 708         struct blob_attr *new_config = wd_new->config;
 709         bool disabled = wd_new->disabled;
 710
 711         wdev->reconf = wd_new->reconf;
 712         wdev->serialize = wd_new->serialize;
 713         free(wd_new);
 714
 715         wdev_prepare_prev_config(wdev);
 716         if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled)
 717                 return;
 718
 719         D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
 720         free(wdev->config);
 721         wdev->config = blob_memdup(new_config);
 722         wdev->disabled = disabled;
 723         wdev_set_config_state(wdev, IFC_RELOAD);
 724 }
 725
 726 static void
 727 wdev_create(struct wireless_device *wdev)
 728 {
 729         wdev->retry = WIRELESS_SETUP_RETRY;
 730         wdev->config = blob_memdup(wdev->config);
 731 }
 732
 733 /* vlist update call for wireless device list */
 734 static void
 735 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
 736             struct vlist_node *node_old)
 737 {
 738         struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
 739         struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
 740
 741         if (wd_old && wd_new) {
 742                 D(WIRELESS, "Update wireless device '%s'\n", wd_old->name);
 743                 wdev_change_config(wd_old, wd_new);
 744         } else if (wd_old) {
 745                 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
 746                 wdev_set_config_state(wd_old, IFC_REMOVE);
 747         } else if (wd_new) {
 748                 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
 749                 wdev_create(wd_new);
 750         }
 751 }
 752
 753 /* wireless netifd script handler */
 754 static void
 755 wireless_add_handler(const char *script, const char *name, json_object *obj)
 756 {
 757         struct wireless_driver *drv;
 758         char *name_str, *script_str;
 759         json_object *dev_config_obj, *iface_config_obj, *vlan_config_obj, *station_config_obj;
 760         struct uci_blob_param_list *dev_config, *iface_config, *vlan_config, *station_config;
 761
 762         dev_config_obj = json_get_field(obj, "device", json_type_array);
 763         iface_config_obj = json_get_field(obj, "iface", json_type_array);
 764         vlan_config_obj = json_get_field(obj, "vlan", json_type_array);
 765         station_config_obj = json_get_field(obj, "station", json_type_array);
 766
 767         if (!dev_config_obj || !iface_config_obj || !vlan_config_obj || !station_config_obj)
 768                 return;
 769
 770         drv = calloc_a(sizeof(*drv),
 771                 &dev_config, sizeof(*dev_config) + sizeof(void *),
 772                 &iface_config, sizeof(*iface_config) + sizeof(void *),
 773                 &vlan_config, sizeof(*vlan_config) + sizeof(void *),
 774                 &station_config, sizeof(*station_config) + sizeof(void *),
 775                 &name_str, strlen(name) + 1,
 776                 &script_str, strlen(script) + 1);
 777
 778         drv->name = strcpy(name_str, name);
 779         drv->script = strcpy(script_str, script);
 780
 781         dev_config->n_next = 1;
 782         dev_config->next[0] = &wdev_param;
 783         drv->device.config = dev_config;
 784
 785         iface_config->n_next = 1;
 786         iface_config->next[0] = &vif_param;
 787         drv->interface.config = iface_config;
 788
 789         vlan_config->n_next = 1;
 790         vlan_config->next[0] = &vlan_param;
 791         drv->vlan.config = vlan_config;
 792
 793         station_config->n_next = 1;
 794         station_config->next[0] = &station_param;
 795         drv->station.config = station_config;
 796
 797         drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
 798         drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
 799         drv->vlan.buf = netifd_handler_parse_config(drv->vlan.config, vlan_config_obj);
 800         drv->station.buf = netifd_handler_parse_config(drv->station.config, station_config_obj);
 801
 802         drv->node.key = drv->name;
 803         avl_insert(&wireless_drivers, &drv->node);
 804         D(WIRELESS, "Add handler for script %s: %s\n", script, name);
 805 }
 806
 807 void wireless_init(void)
 808 {
 809         vlist_init(&wireless_devices, avl_strcmp, wdev_update);
 810         wireless_devices.keep_old = true;
 811         wireless_devices.no_delete = true;
 812
 813         avl_init(&wireless_drivers, avl_strcmp, false, NULL);
 814         drv_fd = netifd_open_subdir("wireless");
 815         if (drv_fd < 0)
 816                 return;
 817
 818         netifd_init_script_handlers(drv_fd, wireless_add_handler);
 819 }
 820
 821 /* parse blob config into the wireless interface object */
 822 static void
 823 wireless_interface_init_config(struct wireless_interface *vif)
 824 {
 825         struct blob_attr *tb[__VIF_ATTR_MAX];
 826         struct blob_attr *cur;
 827
 828         vif->network = NULL;
 829         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
 830
 831         if ((cur = tb[VIF_ATTR_NETWORK]))
 832                 vif->network = cur;
 833
 834         if ((cur = tb[VIF_ATTR_NETWORK_VLAN]))
 835                 vif->network_vlan = cur;
 836
 837         cur = tb[VIF_ATTR_MODE];
 838         vif->ap_mode = cur && !strcmp(blobmsg_get_string(cur), "ap");
 839
 840         cur = tb[VIF_ATTR_ISOLATE];
 841         vif->isolate = vif->ap_mode && cur && blobmsg_get_bool(cur);
 842
 843         cur = tb[VIF_ATTR_PROXYARP];
 844         vif->proxyarp = vif->ap_mode && cur && blobmsg_get_bool(cur);
 845
 846         cur = tb[VIF_ATTR_MCAST_TO_UCAST];
 847         vif->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
 848 }
 849
 850 /* vlist update call for wireless interface list */
 851 static void
 852 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
 853            struct vlist_node *node_old)
 854 {
 855         struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
 856         struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
 857         struct wireless_device *wdev;
 858
 859         if (vif_old)
 860                 wdev = vif_old->wdev;
 861         else
 862                 wdev = vif_new->wdev;
 863
 864         if (vif_old && vif_new) {
 865                 free((void *) vif_old->section);
 866                 vif_old->section = strdup(vif_new->section);
 867                 if (blob_attr_equal(vif_old->config, vif_new->config)) {
 868                         free(vif_new);
 869                         return;
 870                 }
 871
 872                 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
 873                 wireless_interface_handle_link(vif_old, NULL, false);
 874                 free(vif_old->config);
 875                 vif_old->config = blob_memdup(vif_new->config);
 876                 wireless_interface_init_config(vif_old);
 877                 free(vif_new);
 878         } else if (vif_new) {
 879                 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
 880                 vif_new->section = strdup(vif_new->section);
 881                 vif_new->config = blob_memdup(vif_new->config);
 882                 wireless_interface_init_config(vif_new);
 883         } else if (vif_old) {
 884                 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
 885                 wireless_interface_handle_link(vif_old, NULL, false);
 886                 free((void *) vif_old->section);
 887                 free(vif_old->config);
 888                 free(vif_old);
 889         }
 890
 891         wdev_set_config_state(wdev, IFC_RELOAD);
 892 }
 893
 894 /* parse blob config into the vlan object */
 895 static void
 896 wireless_vlan_init_config(struct wireless_vlan *vlan)
 897 {
 898         struct blob_attr *tb[__VLAN_ATTR_MAX];
 899         struct blob_attr *cur;
 900
 901         vlan->network = NULL;
 902         blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(vlan->config), blob_len(vlan->config));
 903
 904         if ((cur = tb[VLAN_ATTR_NETWORK]))
 905                 vlan->network = cur;
 906
 907         if ((cur = tb[VLAN_ATTR_NETWORK_VLAN]))
 908                 vlan->network_vlan = cur;
 909
 910         cur = tb[VLAN_ATTR_ISOLATE];
 911         if (cur)
 912                 vlan->isolate = blobmsg_get_bool(cur);
 913
 914         cur = tb[VLAN_ATTR_MCAST_TO_UCAST];
 915         vlan->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
 916 }
 917
 918 /* vlist update call for vlan list */
 919 static void
 920 vlan_update(struct vlist_tree *tree, struct vlist_node *node_new,
 921             struct vlist_node *node_old)
 922 {
 923         struct wireless_vlan *vlan_old = container_of(node_old, struct wireless_vlan, node);
 924         struct wireless_vlan *vlan_new = container_of(node_new, struct wireless_vlan, node);
 925         struct wireless_device *wdev;
 926
 927         if (vlan_old)
 928                 wdev = vlan_old->wdev;
 929         else
 930                 wdev = vlan_new->wdev;
 931
 932         if (vlan_old && vlan_new) {
 933                 free((void *) vlan_old->section);
 934                 vlan_old->section = strdup(vlan_new->section);
 935                 if (blob_attr_equal(vlan_old->config, vlan_new->config)) {
 936                         free(vlan_new);
 937                         return;
 938                 }
 939
 940                 D(WIRELESS, "Update wireless vlan %s on device %s\n", vlan_new->name, wdev->name);
 941                 wireless_vlan_handle_link(vlan_old, false);
 942                 free(vlan_old->config);
 943                 vlan_old->config = blob_memdup(vlan_new->config);
 944                 vlan_old->isolate = vlan_new->isolate;
 945                 wireless_vlan_init_config(vlan_old);
 946                 free(vlan_new);
 947         } else if (vlan_new) {
 948                 D(WIRELESS, "Create new wireless vlan %s on device %s\n", vlan_new->name, wdev->name);
 949                 vlan_new->section = strdup(vlan_new->section);
 950                 vlan_new->config = blob_memdup(vlan_new->config);
 951                 wireless_vlan_init_config(vlan_new);
 952         } else if (vlan_old) {
 953                 D(WIRELESS, "Delete wireless interface %s on device %s\n", vlan_old->name, wdev->name);
 954                 wireless_vlan_handle_link(vlan_old, false);
 955                 free((void *) vlan_old->section);
 956                 free(vlan_old->config);
 957                 free(vlan_old);
 958         }
 959
 960         wdev_set_config_state(wdev, IFC_RELOAD);
 961 }
 962
 963 /* vlist update call for station list */
 964 static void
 965 station_update(struct vlist_tree *tree, struct vlist_node *node_new,
 966                struct vlist_node *node_old)
 967 {
 968         struct wireless_station *sta_old = container_of(node_old, struct wireless_station, node);
 969         struct wireless_station *sta_new = container_of(node_new, struct wireless_station, node);
 970         struct wireless_device *wdev;
 971
 972         if (sta_old)
 973                 wdev = sta_old->wdev;
 974         else
 975                 wdev = sta_new->wdev;
 976
 977         if (sta_old && sta_new) {
 978                 free((void *) sta_old->section);
 979                 sta_old->section = strdup(sta_new->section);
 980                 if (blob_attr_equal(sta_old->config, sta_new->config)) {
 981                         free(sta_new);
 982                         return;
 983                 }
 984
 985                 D(WIRELESS, "Update wireless station %s on device %s\n", sta_new->name, wdev->name);
 986                 free(sta_old->config);
 987                 sta_old->config = blob_memdup(sta_new->config);
 988                 free(sta_new);
 989         } else if (sta_new) {
 990                 D(WIRELESS, "Create new wireless station %s on device %s\n", sta_new->name, wdev->name);
 991                 sta_new->section = strdup(sta_new->section);
 992                 sta_new->config = blob_memdup(sta_new->config);
 993         } else if (sta_old) {
 994                 D(WIRELESS, "Delete wireless station %s on device %s\n", sta_old->name, wdev->name);
 995                 free((void *) sta_old->section);
 996                 free(sta_old->config);
 997                 free(sta_old);
 998         }
 999
1000         wdev_set_config_state(wdev, IFC_RELOAD);
1001 }
1002
1003 static void
1004 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
1005 {
1006         struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
1007         char buf[128];
1008
1009         while (1) {
1010                 int b = read(fd->fd, buf, sizeof(buf));
1011                 if (b < 0) {
1012                         if (errno == EINTR)
1013                                 continue;
1014
1015                         if (errno == EAGAIN)
1016                                 return;
1017
1018                         goto done;
1019                 }
1020
1021                 if (!b)
1022                         goto done;
1023         }
1024
1025 done:
1026         uloop_timeout_set(&wdev->script_check, 0);
1027         wireless_close_script_proc_fd(wdev);
1028 }
1029
1030 /* watchdog and garbage collector for wireless processes.
1031  * It cleans up terminated processes. If a process is a requirement for the wireless device, it retries the setup */
1032 static void
1033 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
1034 {
1035         struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
1036         struct wireless_process *proc, *tmp;
1037         bool restart = false;
1038
1039         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
1040                 if (wireless_process_check(proc))
1041                         continue;
1042
1043                 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
1044                 if (proc->required)
1045                         restart = true;
1046
1047                 wireless_process_free(wdev, proc);
1048         }
1049
1050         if (restart)
1051                 wireless_device_retry_setup(wdev);
1052         else
1053                 uloop_timeout_set(&wdev->script_check, 1000);
1054 }
1055
1056 /* creates a wireless device object. Called by config */
1057 void
1058 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
1059 {
1060         struct wireless_device *wdev;
1061         char *name_buf;
1062         struct blob_attr *tb[__WDEV_ATTR_MAX];
1063         struct blob_attr *cur;
1064
1065         blobmsg_parse(wdev_policy, __WDEV_ATTR_MAX, tb, blob_data(data), blob_len(data));
1066
1067         wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
1068
1069         cur = tb[WDEV_ATTR_DISABLED];
1070         wdev->disabled = cur && blobmsg_get_bool(cur);
1071
1072         wdev->drv = drv;
1073         wdev->state = IFS_DOWN;
1074         wdev->config_state = IFC_NORMAL;
1075         wdev->name = strcpy(name_buf, name);
1076         wdev->config = data;
1077         wdev->handler_pending = false;
1078
1079         cur = tb[WDEV_ATTR_SERIALIZE];
1080         wdev->serialize = cur && blobmsg_get_bool(cur);
1081
1082         cur = tb[WDEV_ATTR_RECONF];
1083         wdev->reconf = cur && blobmsg_get_bool(cur);
1084
1085         wdev->retry_setup_failed = false;
1086         wdev->autostart = true;
1087         INIT_LIST_HEAD(&wdev->script_proc);
1088         vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
1089         wdev->interfaces.keep_old = true;
1090         vlist_init(&wdev->vlans, avl_strcmp, vlan_update);
1091         wdev->vlans.keep_old = true;
1092         vlist_init(&wdev->stations, avl_strcmp, station_update);
1093         wdev->stations.keep_old = true;
1094
1095         wdev->timeout.cb = wireless_device_setup_timeout;
1096         wdev->script_task.cb = wireless_device_script_task_cb;
1097         wdev->script_task.dir_fd = drv_fd;
1098         wdev->script_task.log_prefix = wdev->name;
1099
1100         wdev->script_proc_fd.fd = -1;
1101         wdev->script_proc_fd.cb = wireless_proc_poll_fd;
1102
1103         wdev->script_check.cb = wireless_device_check_script_tasks;
1104
1105         vlist_add(&wireless_devices, &wdev->node, wdev->name);
1106 }
1107
1108 /* creates a wireless station object. Called by config */
1109 void
1110 wireless_station_create(struct wireless_device *wdev, char *vif, struct blob_attr *data, const char *section)
1111 {
1112         struct wireless_station *sta;
1113         struct blob_attr *tb[__STA_ATTR_MAX];
1114         struct blob_attr *cur;
1115         char *name_buf, *vif_buf;
1116         char name[8];
1117
1118         blobmsg_parse(sta_policy, __STA_ATTR_MAX, tb, blob_data(data), blob_len(data));
1119
1120         cur = tb[STA_ATTR_DISABLED];
1121         if (cur && blobmsg_get_bool(cur))
1122                 return;
1123
1124         sprintf(name, "%d", wdev->sta_idx++);
1125
1126         sta = calloc_a(sizeof(*sta),
1127                        &name_buf, strlen(name) + 1,
1128                        &vif_buf, strlen(vif) + 1);
1129         sta->name = strcpy(name_buf, name);
1130         sta->vif = strcpy(vif_buf, vif);
1131         sta->wdev = wdev;
1132         sta->config = data;
1133         sta->section = section;
1134
1135         vlist_add(&wdev->stations, &sta->node, sta->name);
1136 }
1137
1138 /* ubus callback network.wireless.status, runs for every interface, encode the station */
1139 static void
1140 wireless_station_status(struct wireless_station *sta, struct blob_buf *b)
1141 {
1142         void *i;
1143
1144         i = blobmsg_open_table(b, NULL);
1145         if (sta->section)
1146                 blobmsg_add_string(b, "section", sta->section);
1147         put_container(b, sta->config, "config");
1148         blobmsg_close_table(b, i);
1149 }
1150
1151 /* create a vlan object. Called by config */
1152 void
1153 wireless_vlan_create(struct wireless_device *wdev, char *vif, struct blob_attr *data, const char *section)
1154 {
1155         struct wireless_vlan *vlan;
1156         struct blob_attr *tb[__VLAN_ATTR_MAX];
1157         struct blob_attr *cur;
1158         char *name_buf, *vif_buf;
1159         char name[8];
1160
1161         blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(data), blob_len(data));
1162
1163         cur = tb[VLAN_ATTR_DISABLED];
1164         if (cur && blobmsg_get_bool(cur))
1165                 return;
1166
1167         sprintf(name, "%d", wdev->vlan_idx++);
1168
1169         vlan = calloc_a(sizeof(*vlan),
1170                        &name_buf, strlen(name) + 1,
1171                        &vif_buf, strlen(vif) + 1);
1172         vlan->name = strcpy(name_buf, name);
1173         vlan->vif = strcpy(vif_buf, vif);
1174         vlan->wdev = wdev;
1175         vlan->config = data;
1176         vlan->section = section;
1177         vlan->isolate = false;
1178
1179         vlist_add(&wdev->vlans, &vlan->node, vlan->name);
1180 }
1181
1182 /* ubus callback network.wireless.status, runs for every interface, encode the vlan informations */
1183 static void
1184 wireless_vlan_status(struct wireless_vlan *vlan, struct blob_buf *b)
1185 {
1186         void *i;
1187
1188         i = blobmsg_open_table(b, NULL);
1189         if (vlan->section)
1190                 blobmsg_add_string(b, "section", vlan->section);
1191         if (vlan->ifname)
1192                 blobmsg_add_string(b, "ifname", vlan->ifname);
1193         put_container(b, vlan->config, "config");
1194         blobmsg_close_table(b, i);
1195 }
1196
1197 /* create a wireless interface object. Called by config */
1198 struct wireless_interface* wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
1199 {
1200         struct wireless_interface *vif;
1201         struct blob_attr *tb[__VIF_ATTR_MAX];
1202         struct blob_attr *cur;
1203         char *name_buf;
1204         char name[8];
1205
1206         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
1207
1208         cur = tb[VIF_ATTR_DISABLED];
1209         if (cur && blobmsg_get_bool(cur))
1210                 return NULL;
1211
1212         sprintf(name, "%d", wdev->vif_idx++);
1213
1214         vif = calloc_a(sizeof(*vif),
1215                        &name_buf, strlen(name) + 1);
1216         vif->name = strcpy(name_buf, name);
1217         vif->wdev = wdev;
1218         vif->config = data;
1219         vif->section = section;
1220         vif->isolate = false;
1221
1222         vlist_add(&wdev->interfaces, &vif->node, vif->name);
1223
1224         return vlist_find(&wdev->interfaces, name, vif, node);
1225 }
1226
1227 /* ubus callback network.wireless.status, runs for every interface */
1228 static void
1229 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
1230 {
1231         struct wireless_vlan *vlan;
1232         struct wireless_station *sta;
1233         void *i, *j;
1234
1235         i = blobmsg_open_table(b, NULL);
1236         if (iface->section)
1237                 blobmsg_add_string(b, "section", iface->section);
1238         if (iface->ifname)
1239                 blobmsg_add_string(b, "ifname", iface->ifname);
1240         put_container(b, iface->config, "config");
1241         j = blobmsg_open_array(b, "vlans");
1242         vlist_for_each_element(&iface->wdev->vlans, vlan, node)
1243                 if (!strcmp(iface->name, vlan->vif))
1244                         wireless_vlan_status(vlan, b);
1245         blobmsg_close_array(b, j);
1246         j = blobmsg_open_array(b, "stations");
1247         vlist_for_each_element(&iface->wdev->stations, sta, node)
1248                 if (!strcmp(iface->name, sta->vif))
1249                         wireless_station_status(sta, b);
1250         blobmsg_close_array(b, j);
1251         blobmsg_close_table(b, i);
1252 }
1253
1254 /* ubus callback network.wireless.status */
1255 void
1256 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
1257 {
1258         struct wireless_interface *iface;
1259         void *c, *i;
1260
1261         c = blobmsg_open_table(b, wdev->name);
1262         blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
1263         blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
1264         blobmsg_add_u8(b, "autostart", wdev->autostart);
1265         blobmsg_add_u8(b, "disabled", wdev->disabled);
1266         blobmsg_add_u8(b, "retry_setup_failed", wdev->retry_setup_failed);
1267         put_container(b, wdev->config, "config");
1268
1269         i = blobmsg_open_array(b, "interfaces");
1270         vlist_for_each_element(&wdev->interfaces, iface, node)
1271                 wireless_interface_status(iface, b);
1272         blobmsg_close_array(b, i);
1273         blobmsg_close_table(b, c);
1274 }
1275
1276 /* ubus callback network.wireless.get_validate */
1277 void
1278 wireless_device_get_validate(struct wireless_device *wdev, struct blob_buf *b)
1279 {
1280         struct uci_blob_param_list *p;
1281         void *c, *d;
1282         int i;
1283
1284         c = blobmsg_open_table(b, wdev->name);
1285
1286         d = blobmsg_open_table(b, "device");
1287         p = wdev->drv->device.config;
1288         for (i = 0; i < p->n_params; i++)
1289                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1290         blobmsg_close_table(b, d);
1291
1292         d = blobmsg_open_table(b, "interface");
1293         p = wdev->drv->interface.config;
1294         for (i = 0; i < p->n_params; i++)
1295                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1296         blobmsg_close_table(b, d);
1297
1298         blobmsg_close_table(b, c);
1299 }
1300
1301 /* ubus callback network.wireless.notify, command = set data, for vif */
1302 static void
1303 wireless_interface_set_data(struct wireless_interface *vif)
1304 {
1305         enum {
1306                 VIF_DATA_IFNAME,
1307                 __VIF_DATA_MAX,
1308         };
1309         static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
1310                 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1311         };
1312         struct blob_attr *tb[__VIF_DATA_MAX];
1313         struct blob_attr *cur;
1314
1315         blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
1316                       blobmsg_data(vif->data), blobmsg_data_len(vif->data));
1317
1318         if ((cur = tb[VIF_DATA_IFNAME]))
1319                 vif->ifname = blobmsg_data(cur);
1320 }
1321
1322 /* ubus callback network.wireless.notify, command = set data, for vlan */
1323 static void
1324 wireless_vlan_set_data(struct wireless_vlan *vlan)
1325 {
1326         enum {
1327                 VLAN_DATA_IFNAME,
1328                 __VLAN_DATA_MAX,
1329         };
1330         static const struct blobmsg_policy data_policy[__VLAN_DATA_MAX] = {
1331                 [VLAN_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1332         };
1333         struct blob_attr *tb[__VLAN_DATA_MAX];
1334         struct blob_attr *cur;
1335
1336         blobmsg_parse(data_policy, __VLAN_DATA_MAX, tb,
1337                       blobmsg_data(vlan->data), blobmsg_data_len(vlan->data));
1338
1339         if ((cur = tb[VLAN_DATA_IFNAME]))
1340                 vlan->ifname = blobmsg_data(cur);
1341 }
1342
1343 /* ubus callback network.wireless.notify, command = process add */
1344 static int
1345 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
1346 {
1347         enum {
1348                 PROC_ATTR_PID,
1349                 PROC_ATTR_EXE,
1350                 PROC_ATTR_REQUIRED,
1351                 PROC_ATTR_KEEP,
1352                 __PROC_ATTR_MAX
1353         };
1354         static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
1355                 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
1356                 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
1357                 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
1358                 [PROC_ATTR_KEEP] = { .name = "keep", .type = BLOBMSG_TYPE_BOOL },
1359         };
1360         struct blob_attr *tb[__PROC_ATTR_MAX];
1361         struct wireless_process *proc;
1362         char *name;
1363         int pid;
1364
1365         if (!data)
1366                 return UBUS_STATUS_INVALID_ARGUMENT;
1367
1368         blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1369         if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
1370                 return UBUS_STATUS_INVALID_ARGUMENT;
1371
1372         pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
1373         if (pid < 2)
1374                 return UBUS_STATUS_INVALID_ARGUMENT;
1375
1376         proc = calloc_a(sizeof(*proc),
1377                 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
1378
1379         proc->pid = pid;
1380         proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
1381
1382         if (tb[PROC_ATTR_REQUIRED])
1383                 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
1384
1385         if (tb[PROC_ATTR_KEEP])
1386                 proc->keep = blobmsg_get_bool(tb[PROC_ATTR_KEEP]);
1387
1388         D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
1389         list_add(&proc->list, &wdev->script_proc);
1390         uloop_timeout_set(&wdev->script_check, 0);
1391
1392         return 0;
1393 }
1394
1395 /* ubus callback network.wireless.notify, command = process kill all */
1396 static int
1397 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
1398                                  struct ubus_request_data *req)
1399 {
1400         enum {
1401                 KILL_ATTR_SIGNAL,
1402                 KILL_ATTR_IMMEDIATE,
1403                 __KILL_ATTR_MAX
1404         };
1405         static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
1406                 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
1407                 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
1408         };
1409         struct blob_attr *tb[__KILL_ATTR_MAX];
1410         struct blob_attr *cur;
1411         bool immediate = false;
1412         int signal = SIGTERM;
1413
1414         blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1415
1416         if ((cur = tb[KILL_ATTR_SIGNAL]))
1417                 signal = blobmsg_get_u32(cur);
1418
1419         if ((cur = tb[KILL_ATTR_IMMEDIATE]))
1420                 immediate = blobmsg_get_bool(cur);
1421
1422         if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
1423                 return UBUS_STATUS_PERMISSION_DENIED;
1424
1425         wireless_process_kill_all(wdev, signal, immediate);
1426
1427         if (list_empty(&wdev->script_proc))
1428                 return 0;
1429
1430         wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
1431         ubus_defer_request(ubus_ctx, req, wdev->kill_request);
1432
1433         return 0;
1434 }
1435
1436 /* ubus callback network.wireless.notify, command = set_retry */
1437 static int
1438 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
1439 {
1440         static const struct blobmsg_policy retry_policy = {
1441                 .name = "retry", .type = BLOBMSG_TYPE_INT32
1442         };
1443         struct blob_attr *val;
1444
1445         blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
1446         if (val)
1447                 wdev->retry = blobmsg_get_u32(val);
1448         else
1449                 wdev->retry = WIRELESS_SETUP_RETRY;
1450         __wireless_device_set_up(wdev, 0);
1451         netifd_log_message(L_NOTICE, "Wireless device '%s' set retry=%d\n", wdev->name, wdev->retry);
1452         return 0;
1453 }
1454
1455 enum {
1456         NOTIFY_CMD_UP = 0,
1457         NOTIFY_CMD_SET_DATA = 1,
1458         NOTIFY_CMD_PROCESS_ADD = 2,
1459         NOTIFY_CMD_PROCESS_KILL_ALL = 3,
1460         NOTIFY_CMD_SET_RETRY = 4,
1461 };
1462
1463 /* ubus callback network.wireless.notify */
1464 int
1465 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
1466                        struct ubus_request_data *req)
1467 {
1468         enum {
1469                 NOTIFY_ATTR_COMMAND,
1470                 NOTIFY_ATTR_VIF,
1471                 NOTIFY_ATTR_VLAN,
1472                 NOTIFY_ATTR_DATA,
1473                 __NOTIFY_MAX,
1474         };
1475         static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
1476                 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
1477                 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
1478                 [NOTIFY_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_STRING },
1479                 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
1480         };
1481         struct wireless_interface *vif = NULL;
1482         struct wireless_vlan *vlan = NULL;
1483         struct blob_attr *tb[__NOTIFY_MAX];
1484         struct blob_attr *cur, **pdata;
1485
1486         blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
1487
1488         if (!tb[NOTIFY_ATTR_COMMAND])
1489                 return UBUS_STATUS_INVALID_ARGUMENT;
1490
1491         if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
1492                 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
1493                 if (!vif)
1494                         return UBUS_STATUS_NOT_FOUND;
1495         }
1496
1497         if ((cur = tb[NOTIFY_ATTR_VLAN]) != NULL) {
1498                 vlan = vlist_find(&wdev->vlans, blobmsg_data(cur), vlan, node);
1499                 if (!vlan)
1500                         return UBUS_STATUS_NOT_FOUND;
1501         }
1502
1503         cur = tb[NOTIFY_ATTR_DATA];
1504         if (!cur)
1505                 return UBUS_STATUS_INVALID_ARGUMENT;
1506
1507         switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
1508         case NOTIFY_CMD_UP:
1509                 if (vif || vlan)
1510                         return UBUS_STATUS_INVALID_ARGUMENT;
1511
1512                 if (wdev->state != IFS_SETUP)
1513                         return UBUS_STATUS_PERMISSION_DENIED;
1514
1515                 wireless_device_mark_up(wdev);
1516                 break;
1517         case NOTIFY_CMD_SET_DATA:
1518                 if (vif)
1519                         pdata = &vif->data;
1520                 else if (vlan)
1521                         pdata = &vlan->data;
1522                 else
1523                         pdata = &wdev->data;
1524
1525                 if (*pdata)
1526                         return UBUS_STATUS_INVALID_ARGUMENT;
1527
1528                 *pdata = blob_memdup(cur);
1529                 if (vif)
1530                         wireless_interface_set_data(vif);
1531                 else if (vlan)
1532                         wireless_vlan_set_data(vlan);
1533                 break;
1534         case NOTIFY_CMD_PROCESS_ADD:
1535                 return wireless_device_add_process(wdev, cur);
1536         case NOTIFY_CMD_PROCESS_KILL_ALL:
1537                 return wireless_device_process_kill_all(wdev, cur, req);
1538         case NOTIFY_CMD_SET_RETRY:
1539                 return wireless_device_set_retry(wdev, cur);
1540         default:
1541                 return UBUS_STATUS_INVALID_ARGUMENT;
1542         }
1543
1544         return 0;
1545 }
1546
1547 /* called on startup and by netifd reload() */
1548 void
1549 wireless_start_pending(void)
1550 {
1551         struct wireless_device *wdev;
1552
1553         vlist_for_each_element(&wireless_devices, wdev, node)
1554                 __wireless_device_set_up(wdev, 0);
1555 }
1556
1557 void wireless_device_hotplug_event(const char *name, bool add)
1558 {
1559         struct wireless_interface *vif;
1560         struct wireless_device *wdev;
1561         const char *s;
1562         size_t len;
1563
1564         s = strstr(name, ".sta");
1565         if (s) {
1566                 if (strchr(s + 4, '.'))
1567                         return;
1568
1569                 len = s - name;
1570         } else if (!device_find(name)) {
1571                 len = strlen(name);
1572         } else {
1573                 return;
1574         }
1575
1576         vlist_for_each_element(&wireless_devices, wdev, node) {
1577                 vlist_for_each_element(&wdev->interfaces, vif, node) {
1578                         if (!vif->ifname)
1579                                 continue;
1580
1581                         if (strlen(vif->ifname) != len ||
1582                             strncmp(vif->ifname, name, len) != 0)
1583                                 continue;
1584
1585                         wireless_interface_handle_link(vif, name, add);
1586                 }
1587         }
1588 }