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