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_BRIDGE_ISOLATE,
  67         VIF_ATTR_ISOLATE,
  68         VIF_ATTR_MODE,
  69         VIF_ATTR_PROXYARP,
  70         VIF_ATTR_MCAST_TO_UCAST,
  71         __VIF_ATTR_MAX,
  72 };
  73
  74 static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
  75         [VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  76         [VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
  77         [VIF_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
  78         [VIF_ATTR_BRIDGE_ISOLATE] = { .name = "bridge_isolate", .type = BLOBMSG_TYPE_BOOL },
  79         [VIF_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
  80         [VIF_ATTR_MODE] = { .name = "mode", .type = BLOBMSG_TYPE_STRING },
  81         [VIF_ATTR_PROXYARP] = { .name = "proxy_arp", .type = BLOBMSG_TYPE_BOOL },
  82         [VIF_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
  83 };
  84
  85 static const struct uci_blob_param_list vif_param = {
  86         .n_params = ARRAY_SIZE(vif_policy),
  87         .params = vif_policy,
  88 };
  89
  90 enum {
  91         VLAN_ATTR_DISABLED,
  92         VLAN_ATTR_NETWORK,
  93         VLAN_ATTR_NETWORK_VLAN,
  94         VLAN_ATTR_BRIDGE_ISOLATE,
  95         VLAN_ATTR_ISOLATE,
  96         VLAN_ATTR_MCAST_TO_UCAST,
  97         __VLAN_ATTR_MAX,
  98 };
  99
 100 static const struct blobmsg_policy vlan_policy[__VLAN_ATTR_MAX] = {
 101         [VLAN_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
 102         [VLAN_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
 103         [VLAN_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
 104         [VLAN_ATTR_BRIDGE_ISOLATE] = { .name = "bridge_isolate", .type = BLOBMSG_TYPE_BOOL },
 105         [VLAN_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
 106         [VLAN_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
 107 };
 108
 109 static const struct uci_blob_param_list vlan_param = {
 110         .n_params = ARRAY_SIZE(vlan_policy),
 111         .params = vlan_policy,
 112 };
 113
 114 enum {
 115         STA_ATTR_DISABLED,
 116         __STA_ATTR_MAX,
 117 };
 118
 119 static const struct blobmsg_policy sta_policy[__STA_ATTR_MAX] = {
 120         [STA_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
 121 };
 122
 123 static const struct uci_blob_param_list station_param = {
 124         .n_params = ARRAY_SIZE(sta_policy),
 125         .params = sta_policy,
 126 };
 127
 128 static void
 129 wireless_handler_stop(struct wireless_device *wdev)
 130 {
 131         if (wdev->handler_pending) {
 132                 wdev->handler_pending = false;
 133                 list_del(&wdev->handler);
 134         }
 135 }
 136
 137 static void
 138 put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
 139 {
 140         void *c = blobmsg_open_table(buf, name);
 141         blob_put_raw(buf, blob_data(attr), blob_len(attr));
 142         blobmsg_close_table(buf, c);
 143 }
 144
 145 static void
 146 vif_config_add_bridge(struct blob_buf *buf, struct blob_attr *networks, bool prepare)
 147 {
 148         struct interface *iface;
 149         struct device *dev = NULL, *orig_dev;
 150         struct blob_attr *cur;
 151         const char *network;
 152         size_t rem;
 153
 154         if (!networks)
 155                 return;
 156
 157         blobmsg_for_each_attr(cur, networks, rem) {
 158                 network = blobmsg_data(cur);
 159
 160                 iface = vlist_find(&interfaces, network, iface, node);
 161                 if (!iface)
 162                         continue;
 163
 164                 dev = iface->main_dev.dev;
 165                 if (!dev)
 166                         return;
 167
 168                 if (!dev->hotplug_ops)
 169                         return;
 170         }
 171
 172         if (!dev)
 173                 return;
 174
 175         orig_dev = dev;
 176         if (dev->hotplug_ops && dev->hotplug_ops->prepare)
 177                 dev->hotplug_ops->prepare(dev, &dev);
 178
 179         if (!dev || !dev->type->bridge_capability)
 180                 return;
 181
 182         blobmsg_add_string(buf, "bridge", dev->ifname);
 183         blobmsg_add_string(buf, "bridge-ifname", orig_dev->ifname);
 184
 185         if (dev->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST)
 186                 blobmsg_add_u8(buf, "multicast_to_unicast",
 187                                dev->settings.multicast_to_unicast);
 188 }
 189
 190 static void
 191 prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
 192 {
 193         struct wireless_interface *vif;
 194         struct wireless_vlan *vlan;
 195         struct wireless_station *sta;
 196         void *l, *i, *j, *k;
 197
 198         blob_buf_init(&b, 0);
 199         put_container(&b, wdev->config, "config");
 200         if (wdev->data)
 201                 blobmsg_add_blob(&b, wdev->data);
 202
 203         l = blobmsg_open_table(&b, "interfaces");
 204         vlist_for_each_element(&wdev->interfaces, vif, node) {
 205                 if (vif->disabled)
 206                         continue;
 207
 208                 i = blobmsg_open_table(&b, vif->name);
 209                 vif_config_add_bridge(&b, vif->network, up);
 210                 put_container(&b, vif->config, "config");
 211                 if (vif->data)
 212                         blobmsg_add_blob(&b, vif->data);
 213
 214                 j = blobmsg_open_table(&b, "vlans");
 215                 vlist_for_each_element(&vif->vlans, vlan, node) {
 216                         k = blobmsg_open_table(&b, vlan->name);
 217                         vif_config_add_bridge(&b, vlan->network, up);
 218                         put_container(&b, vlan->config, "config");
 219                         if (vlan->data)
 220                                 blobmsg_add_blob(&b, vlan->data);
 221                         blobmsg_close_table(&b, k);
 222                 }
 223                 blobmsg_close_table(&b, j);
 224
 225                 j = blobmsg_open_table(&b, "stas");
 226                 vlist_for_each_element(&vif->stations, sta, node) {
 227                         k = blobmsg_open_table(&b, sta->name);
 228                         put_container(&b, sta->config, "config");
 229                         if (sta->data)
 230                                 blobmsg_add_blob(&b, sta->data);
 231                         blobmsg_close_table(&b, k);
 232                 }
 233                 blobmsg_close_table(&b, j);
 234                 blobmsg_close_table(&b, i);
 235         }
 236         blobmsg_close_table(&b, l);
 237
 238 }
 239
 240 static bool
 241 wireless_process_check(struct wireless_process *proc)
 242 {
 243         return check_pid_path(proc->pid, proc->exe);
 244 }
 245
 246 static void
 247 wireless_complete_kill_request(struct wireless_device *wdev)
 248 {
 249         if (!wdev->kill_request)
 250                 return;
 251
 252         ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
 253         free(wdev->kill_request);
 254         wdev->kill_request = NULL;
 255 }
 256
 257 static void
 258 wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
 259 {
 260         D(WIRELESS, "Wireless device '%s' free pid %d", wdev->name, proc->pid);
 261         list_del(&proc->list);
 262         free(proc);
 263
 264         if (list_empty(&wdev->script_proc))
 265                 wireless_complete_kill_request(wdev);
 266 }
 267
 268 static void
 269 wireless_close_script_proc_fd(struct wireless_device *wdev)
 270 {
 271         if (wdev->script_proc_fd.fd < 0)
 272                 return;
 273
 274         uloop_fd_delete(&wdev->script_proc_fd);
 275         close(wdev->script_proc_fd.fd);
 276         wdev->script_proc_fd.fd = -1;
 277 }
 278
 279 static void
 280 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
 281 {
 282         struct wireless_process *proc, *tmp;
 283
 284         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
 285                 bool check = wireless_process_check(proc);
 286
 287                 if (check && !proc->keep) {
 288                         D(WIRELESS, "Wireless device '%s' kill pid %d", wdev->name, proc->pid);
 289                         kill(proc->pid, signal);
 290                 }
 291
 292                 if (free || !check)
 293                         wireless_process_free(wdev, proc);
 294         }
 295
 296         if (free)
 297                 wireless_close_script_proc_fd(wdev);
 298 }
 299
 300 static void
 301 wireless_device_free_state(struct wireless_device *wdev)
 302 {
 303         struct wireless_interface *vif;
 304         struct wireless_vlan *vlan;
 305         struct wireless_station *sta;
 306
 307         wireless_handler_stop(wdev);
 308         uloop_timeout_cancel(&wdev->script_check);
 309         uloop_timeout_cancel(&wdev->timeout);
 310         wireless_complete_kill_request(wdev);
 311         free(wdev->data);
 312         wdev->data = NULL;
 313         vlist_for_each_element(&wdev->interfaces, vif, node) {
 314                 free(vif->data);
 315                 vif->data = NULL;
 316                 vif->ifname = NULL;
 317                 vlist_for_each_element(&vif->vlans, vlan, node) {
 318                         free(vlan->data);
 319                         vlan->data = NULL;
 320                         vlan->ifname = NULL;
 321                 }
 322                 vlist_for_each_element(&vif->stations, sta, node) {
 323                         free(sta->data);
 324                         sta->data = NULL;
 325                 }
 326         }
 327 }
 328
 329 static void wireless_device_set_mcast_to_unicast(struct device *dev, int val)
 330 {
 331         if (val < 0) {
 332                 dev->settings.flags &= ~DEV_OPT_MULTICAST_TO_UNICAST;
 333                 return;
 334         }
 335
 336         dev->settings.multicast_to_unicast = !!val;
 337         dev->settings.flags |= DEV_OPT_MULTICAST_TO_UNICAST;
 338 }
 339
 340 static void wireless_interface_handle_link(struct wireless_interface *vif, const char *ifname, bool up)
 341 {
 342         struct interface *iface;
 343         struct blob_attr *cur;
 344         const char *network;
 345         struct device *dev;
 346         size_t rem;
 347
 348         if (!vif->network || !vif->ifname)
 349                 return;
 350
 351         if (!ifname)
 352                 ifname = vif->ifname;
 353
 354         if (!up)
 355                 goto out;
 356
 357         dev = __device_get(ifname, 2, false);
 358         if (!dev)
 359                 goto out;
 360
 361         dev->wireless = true;
 362         dev->settings.flags |= DEV_OPT_ISOLATE;
 363         dev->settings.isolate = vif->bridge_isolate;
 364
 365         if (strcmp(ifname, vif->ifname) != 0)
 366                 goto out;
 367
 368         dev->wireless_isolate = vif->isolate;
 369         dev->wireless_proxyarp = vif->proxyarp;
 370         dev->wireless_ap = vif->ap_mode;
 371         wireless_device_set_mcast_to_unicast(dev, vif->multicast_to_unicast);
 372         dev->bpdu_filter = dev->wireless_ap;
 373
 374 out:
 375         blobmsg_for_each_attr(cur, vif->network, rem) {
 376                 network = blobmsg_data(cur);
 377
 378                 iface = vlist_find(&interfaces, network, iface, node);
 379                 if (!iface)
 380                         continue;
 381
 382                 interface_handle_link(iface, ifname, vif->network_vlan, up, true);
 383         }
 384 }
 385
 386 static void wireless_vlan_handle_link(struct wireless_vlan *vlan, bool up)
 387 {
 388         struct interface *iface;
 389         struct blob_attr *cur;
 390         const char *network;
 391         size_t rem;
 392
 393         if (!vlan->network || !vlan->ifname)
 394                 return;
 395
 396         if (up) {
 397                 struct device *dev = device_get(vlan->ifname, 2);
 398                 if (dev) {
 399                         dev->wireless_isolate = vlan->isolate;
 400                         dev->wireless = true;
 401                         dev->wireless_ap = true;
 402                         dev->bpdu_filter = true;
 403                         dev->settings.flags |= DEV_OPT_ISOLATE;
 404                         dev->settings.isolate = vlan->bridge_isolate;
 405                         wireless_device_set_mcast_to_unicast(dev, vlan->multicast_to_unicast);
 406                 }
 407         }
 408
 409         blobmsg_for_each_attr(cur, vlan->network, rem) {
 410                 network = blobmsg_data(cur);
 411
 412                 iface = vlist_find(&interfaces, network, iface, node);
 413                 if (!iface)
 414                         continue;
 415
 416                 interface_handle_link(iface, vlan->ifname, vlan->network_vlan, up, true);
 417         }
 418 }
 419
 420 static void
 421 wireless_device_setup_cancel(struct wireless_device *wdev)
 422 {
 423         if (wdev->cancel)
 424                 return;
 425
 426         wireless_handler_stop(wdev);
 427         D(WIRELESS, "Cancel wireless device '%s' setup", wdev->name);
 428         wdev->cancel = true;
 429         uloop_timeout_set(&wdev->timeout, 10 * 1000);
 430 }
 431
 432 static void
 433 wireless_device_run_handler(struct wireless_device *wdev, bool up)
 434 {
 435         const char *action = up ? "setup" : "teardown";
 436         const char *argv[6];
 437         char *config;
 438         int i = 0;
 439         int fds[2] = { -1, -1 };
 440
 441         wireless_handler_stop(wdev);
 442
 443         if (handler_pending && wdev->serialize) {
 444                 wdev->handler_action = up;
 445                 wdev->handler_pending = true;
 446                 list_add_tail(&wdev->handler, &handlers);
 447                 return;
 448         }
 449         if (wdev->serialize)
 450                 handler_pending = true;
 451
 452         D(WIRELESS, "Wireless device '%s' run %s handler", wdev->name, action);
 453         if (!up && wdev->prev_config) {
 454                 config = blobmsg_format_json(wdev->prev_config, true);
 455                 free(wdev->prev_config);
 456                 wdev->prev_config = NULL;
 457         } else {
 458                 prepare_config(wdev, &b, up);
 459                 free(wdev->prev_config);
 460                 wdev->prev_config = up ? blob_memdup(b.head) : NULL;
 461                 config = blobmsg_format_json(b.head, true);
 462         }
 463
 464         argv[i++] = wdev->drv->script;
 465         argv[i++] = wdev->drv->name;
 466         argv[i++] = action;
 467         argv[i++] = wdev->name;
 468         argv[i++] = config;
 469         argv[i] = NULL;
 470
 471         if (up && pipe(fds) == 0) {
 472                 if (wdev->script_proc_fd.fd >= 0)
 473                         wireless_close_script_proc_fd(wdev);
 474
 475                 wdev->script_proc_fd.fd = fds[0];
 476                 uloop_fd_add(&wdev->script_proc_fd,
 477                              ULOOP_READ | ULOOP_EDGE_TRIGGER);
 478         }
 479
 480         netifd_start_process(argv, NULL, &wdev->script_task);
 481
 482         if (fds[1] >= 0)
 483                 close(fds[1]);
 484
 485         free(config);
 486 }
 487
 488 static void
 489 wireless_handler_next(void)
 490 {
 491         struct wireless_device *wdev;
 492
 493         if (handler_pending)
 494                 return;
 495         if (list_empty(&handlers))
 496                 return;
 497         wdev = list_first_entry(&handlers, struct wireless_device, handler);
 498         list_del(&wdev->handler);
 499         wdev->handler_pending = false;
 500         wireless_device_run_handler(wdev, wdev->handler_action);
 501 }
 502
 503 static void
 504 __wireless_device_set_up(struct wireless_device *wdev, int force)
 505 {
 506         if (wdev->disabled)
 507                 return;
 508
 509         if (wdev->retry_setup_failed)
 510                 return;
 511
 512         if (!wdev->autostart)
 513                 return;
 514
 515         if ((!force && wdev->state != IFS_DOWN) || config_init)
 516                 return;
 517
 518         wdev->state = IFS_SETUP;
 519         wireless_device_run_handler(wdev, true);
 520 }
 521
 522 static void
 523 wireless_device_free(struct wireless_device *wdev)
 524 {
 525         wireless_handler_stop(wdev);
 526         vlist_flush_all(&wdev->interfaces);
 527         avl_delete(&wireless_devices.avl, &wdev->node.avl);
 528         free(wdev->config);
 529         free(wdev->prev_config);
 530         free(wdev);
 531 }
 532
 533 static void
 534 wdev_handle_config_change(struct wireless_device *wdev)
 535 {
 536         enum interface_config_state state = wdev->config_state;
 537
 538         switch(state) {
 539         case IFC_RELOAD:
 540                 wdev->retry = WIRELESS_SETUP_RETRY;
 541                 wdev->retry_setup_failed = false;
 542                 fallthrough;
 543         case IFC_NORMAL:
 544                 __wireless_device_set_up(wdev, 0);
 545
 546                 wdev->config_state = IFC_NORMAL;
 547                 break;
 548         case IFC_REMOVE:
 549                 wireless_device_free(wdev);
 550                 break;
 551         }
 552 }
 553
 554 static void
 555 wireless_device_mark_down(struct wireless_device *wdev)
 556 {
 557         struct wireless_interface *vif;
 558         struct wireless_vlan *vlan;
 559
 560         netifd_log_message(L_NOTICE, "Wireless device '%s' is now down\n", wdev->name);
 561
 562
 563         vlist_for_each_element(&wdev->interfaces, vif, node) {
 564                 wireless_interface_handle_link(vif, NULL, false);
 565                 vlist_for_each_element(&vif->vlans, vlan, node)
 566                         wireless_vlan_handle_link(vlan, false);
 567         }
 568
 569         wireless_process_kill_all(wdev, SIGTERM, true);
 570
 571         wdev->cancel = false;
 572         wdev->state = IFS_DOWN;
 573         wireless_device_free_state(wdev);
 574         wdev_handle_config_change(wdev);
 575 }
 576
 577 /* timeout callback to protect the tear down */
 578 static void
 579 wireless_device_setup_timeout(struct uloop_timeout *timeout)
 580 {
 581         struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
 582
 583         if (wdev->handler_pending) {
 584                 wdev->handler_pending = false;
 585                 list_del(&wdev->handler);
 586         }
 587         netifd_kill_process(&wdev->script_task);
 588         wdev->script_task.cb(&wdev->script_task, -1);
 589         wireless_device_mark_down(wdev);
 590 }
 591
 592 void
 593 wireless_device_set_up(struct wireless_device *wdev)
 594 {
 595         wdev->retry = WIRELESS_SETUP_RETRY;
 596         wdev->autostart = true;
 597         __wireless_device_set_up(wdev, 0);
 598 }
 599
 600 void
 601 wireless_device_reconf(struct wireless_device *wdev)
 602 {
 603         wdev->retry = WIRELESS_SETUP_RETRY;
 604         wdev->autostart = true;
 605         __wireless_device_set_up(wdev, wdev->reconf && (wdev->state == IFS_UP));
 606 }
 607
 608 static void
 609 __wireless_device_set_down(struct wireless_device *wdev)
 610 {
 611         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
 612                 return;
 613
 614         if (wdev->script_task.uloop.pending) {
 615                 wireless_device_setup_cancel(wdev);
 616                 return;
 617         }
 618
 619         wdev->state = IFS_TEARDOWN;
 620         wireless_device_run_handler(wdev, false);
 621 }
 622
 623 /* ubus callback network.wireless.notify, command = up */
 624 static void
 625 wireless_device_mark_up(struct wireless_device *wdev)
 626 {
 627         struct wireless_interface *vif;
 628         struct wireless_vlan *vlan;
 629
 630         if (wdev->cancel) {
 631                 wdev->cancel = false;
 632                 __wireless_device_set_down(wdev);
 633                 return;
 634         }
 635
 636         netifd_log_message(L_NOTICE, "Wireless device '%s' is now up\n", wdev->name);
 637         wdev->retry = WIRELESS_SETUP_RETRY;
 638         wdev->state = IFS_UP;
 639         vlist_for_each_element(&wdev->interfaces, vif, node) {
 640                 wireless_interface_handle_link(vif, NULL, true);
 641                 vlist_for_each_element(&vif->vlans, vlan, node)
 642                         wireless_vlan_handle_link(vlan, true);
 643         }
 644 }
 645
 646 static void
 647 wireless_device_retry_setup(struct wireless_device *wdev)
 648 {
 649         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
 650                 return;
 651
 652         netifd_log_message(wdev->retry ? L_WARNING : L_CRIT,
 653                            "Wireless device '%s' setup failed, retry=%d\n",
 654                            wdev->name, wdev->retry);
 655         if (--wdev->retry < 0)
 656                 wdev->retry_setup_failed = true;
 657
 658         __wireless_device_set_down(wdev);
 659 }
 660
 661 static void
 662 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
 663 {
 664         struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
 665
 666         switch (wdev->state) {
 667         case IFS_SETUP:
 668                 wireless_device_retry_setup(wdev);
 669                 break;
 670         case IFS_TEARDOWN:
 671                 wireless_device_mark_down(wdev);
 672                 break;
 673         default:
 674                 break;
 675         }
 676
 677         if (wdev->serialize) {
 678                 handler_pending = false;
 679                 wireless_handler_next();
 680         }
 681 }
 682
 683 void
 684 wireless_device_set_down(struct wireless_device *wdev)
 685 {
 686         wdev->retry_setup_failed = false;
 687         wdev->autostart = false;
 688         __wireless_device_set_down(wdev);
 689 }
 690
 691 static void
 692 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
 693 {
 694         if (wdev->config_state != IFC_NORMAL)
 695                 return;
 696
 697         wdev->config_update = false;
 698         if (!wdev->disabled && s == IFC_RELOAD && wdev->reconf && wdev->state == IFS_UP) {
 699                 wireless_device_reconf(wdev);
 700                 return;
 701         }
 702
 703         wdev->config_state = s;
 704         if (wdev->state == IFS_DOWN)
 705                 wdev_handle_config_change(wdev);
 706         else
 707                 __wireless_device_set_down(wdev);
 708 }
 709
 710 static void
 711 wdev_prepare_prev_config(struct wireless_device *wdev)
 712 {
 713         prepare_config(wdev, &b, false);
 714         free(wdev->prev_config);
 715         wdev->prev_config = blob_memdup(b.head);
 716 }
 717
 718 static void
 719 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
 720 {
 721         struct blob_attr *new_config = wd_new->config;
 722         bool disabled = wd_new->disabled;
 723
 724         wdev->reconf = wd_new->reconf;
 725         wdev->serialize = wd_new->serialize;
 726         free(wd_new);
 727
 728         if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled)
 729                 return;
 730
 731         D(WIRELESS, "Update configuration of wireless device '%s'", wdev->name);
 732         free(wdev->config);
 733         wdev->config = blob_memdup(new_config);
 734         wdev->disabled = disabled;
 735         wdev->config_update = true;
 736 }
 737
 738 static void
 739 wdev_create(struct wireless_device *wdev)
 740 {
 741         wdev->retry = WIRELESS_SETUP_RETRY;
 742         wdev->config = blob_memdup(wdev->config);
 743 }
 744
 745 /* vlist update call for wireless device list */
 746 static void
 747 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
 748             struct vlist_node *node_old)
 749 {
 750         struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
 751         struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
 752
 753         if (wd_old && wd_new) {
 754                 D(WIRELESS, "Update wireless device '%s'", wd_old->name);
 755                 wdev_change_config(wd_old, wd_new);
 756         } else if (wd_old) {
 757                 D(WIRELESS, "Delete wireless device '%s'", wd_old->name);
 758                 wdev_set_config_state(wd_old, IFC_REMOVE);
 759         } else if (wd_new) {
 760                 D(WIRELESS, "Create wireless device '%s'", wd_new->name);
 761                 wdev_create(wd_new);
 762         }
 763 }
 764
 765 /* wireless netifd script handler */
 766 static void
 767 wireless_add_handler(const char *script, const char *name, json_object *obj)
 768 {
 769         struct wireless_driver *drv;
 770         char *name_str, *script_str;
 771         json_object *dev_config_obj, *iface_config_obj, *vlan_config_obj, *station_config_obj;
 772         struct uci_blob_param_list *dev_config, *iface_config, *vlan_config, *station_config;
 773
 774         dev_config_obj = json_get_field(obj, "device", json_type_array);
 775         iface_config_obj = json_get_field(obj, "iface", json_type_array);
 776         vlan_config_obj = json_get_field(obj, "vlan", json_type_array);
 777         station_config_obj = json_get_field(obj, "station", json_type_array);
 778
 779         if (!dev_config_obj || !iface_config_obj || !vlan_config_obj || !station_config_obj)
 780                 return;
 781
 782         drv = calloc_a(sizeof(*drv),
 783                 &dev_config, sizeof(*dev_config) + sizeof(void *),
 784                 &iface_config, sizeof(*iface_config) + sizeof(void *),
 785                 &vlan_config, sizeof(*vlan_config) + sizeof(void *),
 786                 &station_config, sizeof(*station_config) + sizeof(void *),
 787                 &name_str, strlen(name) + 1,
 788                 &script_str, strlen(script) + 1);
 789
 790         drv->name = strcpy(name_str, name);
 791         drv->script = strcpy(script_str, script);
 792
 793         dev_config->n_next = 1;
 794         dev_config->next[0] = &wdev_param;
 795         drv->device.config = dev_config;
 796
 797         iface_config->n_next = 1;
 798         iface_config->next[0] = &vif_param;
 799         drv->interface.config = iface_config;
 800
 801         vlan_config->n_next = 1;
 802         vlan_config->next[0] = &vlan_param;
 803         drv->vlan.config = vlan_config;
 804
 805         station_config->n_next = 1;
 806         station_config->next[0] = &station_param;
 807         drv->station.config = station_config;
 808
 809         drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
 810         drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
 811         drv->vlan.buf = netifd_handler_parse_config(drv->vlan.config, vlan_config_obj);
 812         drv->station.buf = netifd_handler_parse_config(drv->station.config, station_config_obj);
 813
 814         drv->node.key = drv->name;
 815         avl_insert(&wireless_drivers, &drv->node);
 816         D(WIRELESS, "Add handler for script %s: %s", script, name);
 817 }
 818
 819 void wireless_init(void)
 820 {
 821         vlist_init(&wireless_devices, avl_strcmp, wdev_update);
 822         wireless_devices.keep_old = true;
 823         wireless_devices.no_delete = true;
 824
 825         avl_init(&wireless_drivers, avl_strcmp, false, NULL);
 826         drv_fd = netifd_open_subdir("wireless");
 827         if (drv_fd < 0)
 828                 return;
 829
 830         netifd_init_script_handlers(drv_fd, wireless_add_handler);
 831 }
 832
 833 /* parse blob config into the wireless interface object */
 834 static void
 835 wireless_interface_init_config(struct wireless_interface *vif)
 836 {
 837         struct blob_attr *tb[__VIF_ATTR_MAX];
 838         struct blob_attr *cur;
 839
 840         vif->network = NULL;
 841         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
 842
 843         if ((cur = tb[VIF_ATTR_NETWORK]))
 844                 vif->network = cur;
 845
 846         if ((cur = tb[VIF_ATTR_NETWORK_VLAN]))
 847                 vif->network_vlan = cur;
 848
 849         cur = tb[VIF_ATTR_MODE];
 850         vif->ap_mode = cur && !strcmp(blobmsg_get_string(cur), "ap");
 851
 852         cur = tb[VIF_ATTR_BRIDGE_ISOLATE];
 853         vif->bridge_isolate = cur && blobmsg_get_bool(cur);
 854
 855         cur = tb[VIF_ATTR_ISOLATE];
 856         vif->isolate = cur && blobmsg_get_bool(cur);
 857
 858         cur = tb[VIF_ATTR_PROXYARP];
 859         vif->proxyarp = vif->ap_mode && cur && blobmsg_get_bool(cur);
 860
 861         cur = tb[VIF_ATTR_MCAST_TO_UCAST];
 862         vif->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
 863 }
 864
 865 static void
 866 vif_free(struct wireless_interface *vif)
 867 {
 868         vlist_flush_all(&vif->vlans);
 869         vlist_flush_all(&vif->stations);
 870         free((void *) vif->section);
 871         free(vif->config);
 872         free(vif);
 873 }
 874
 875 /* vlist update call for wireless interface list */
 876 static void
 877 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
 878            struct vlist_node *node_old)
 879 {
 880         struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
 881         struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
 882         struct wireless_device *wdev;
 883
 884         if (vif_old)
 885                 wdev = vif_old->wdev;
 886         else
 887                 wdev = vif_new->wdev;
 888
 889         if (vif_old && vif_new) {
 890                 free((void *) vif_old->section);
 891                 vif_old->section = strdup(vif_new->section);
 892                 if (blob_attr_equal(vif_old->config, vif_new->config)) {
 893                         free(vif_new);
 894                         return;
 895                 }
 896
 897                 D(WIRELESS, "Update wireless interface %s on device %s", vif_new->name, wdev->name);
 898                 wireless_interface_handle_link(vif_old, NULL, false);
 899                 free(vif_old->config);
 900                 vif_old->config = blob_memdup(vif_new->config);
 901                 wireless_interface_init_config(vif_old);
 902                 free(vif_new);
 903         } else if (vif_new) {
 904                 D(WIRELESS, "Create new wireless interface %s on device %s", vif_new->name, wdev->name);
 905                 vif_new->section = strdup(vif_new->section);
 906                 vif_new->config = blob_memdup(vif_new->config);
 907                 wireless_interface_init_config(vif_new);
 908         } else if (vif_old) {
 909                 D(WIRELESS, "Delete wireless interface %s on device %s", vif_old->name, wdev->name);
 910                 wireless_interface_handle_link(vif_old, NULL, false);
 911                 vif_free(vif_old);
 912         }
 913
 914         wdev->config_update = true;
 915 }
 916
 917 /* parse blob config into the vlan object */
 918 static void
 919 wireless_vlan_init_config(struct wireless_vlan *vlan)
 920 {
 921         struct blob_attr *tb[__VLAN_ATTR_MAX];
 922         struct blob_attr *cur;
 923
 924         vlan->network = NULL;
 925         blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(vlan->config), blob_len(vlan->config));
 926
 927         if ((cur = tb[VLAN_ATTR_NETWORK]))
 928                 vlan->network = cur;
 929
 930         if ((cur = tb[VLAN_ATTR_NETWORK_VLAN]))
 931                 vlan->network_vlan = cur;
 932
 933         cur = tb[VLAN_ATTR_BRIDGE_ISOLATE];
 934         vlan->bridge_isolate = cur && blobmsg_get_bool(cur);
 935
 936         cur = tb[VLAN_ATTR_ISOLATE];
 937         vlan->isolate = cur && blobmsg_get_bool(cur);
 938
 939         cur = tb[VLAN_ATTR_MCAST_TO_UCAST];
 940         vlan->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
 941 }
 942
 943 /* vlist update call for vlan list */
 944 static void
 945 vlan_update(struct vlist_tree *tree, struct vlist_node *node_new,
 946             struct vlist_node *node_old)
 947 {
 948         struct wireless_vlan *vlan_old = container_of_safe(node_old, struct wireless_vlan, node);
 949         struct wireless_vlan *vlan_new = container_of_safe(node_new, struct wireless_vlan, node);
 950         struct wireless_interface *vif = container_of(tree, struct wireless_interface, vlans);
 951         struct wireless_device *wdev = vif->wdev;
 952
 953         if (vlan_old && vlan_new) {
 954                 free((void *) vlan_old->section);
 955                 vlan_old->section = strdup(vlan_new->section);
 956                 if (blob_attr_equal(vlan_old->config, vlan_new->config)) {
 957                         free(vlan_new);
 958                         return;
 959                 }
 960
 961                 D(WIRELESS, "Update wireless vlan %s on device %s", vlan_new->name, wdev->name);
 962                 wireless_vlan_handle_link(vlan_old, false);
 963                 free(vlan_old->config);
 964                 vlan_old->config = blob_memdup(vlan_new->config);
 965                 vlan_old->isolate = vlan_new->isolate;
 966                 wireless_vlan_init_config(vlan_old);
 967                 free(vlan_new);
 968         } else if (vlan_new) {
 969                 D(WIRELESS, "Create new wireless vlan %s on device %s", vlan_new->name, wdev->name);
 970                 vlan_new->section = strdup(vlan_new->section);
 971                 vlan_new->config = blob_memdup(vlan_new->config);
 972                 wireless_vlan_init_config(vlan_new);
 973         } else if (vlan_old) {
 974                 D(WIRELESS, "Delete wireless vlan %s on device %s", vlan_old->name, wdev->name);
 975                 wireless_vlan_handle_link(vlan_old, false);
 976                 free((void *) vlan_old->section);
 977                 free(vlan_old->config);
 978                 free(vlan_old);
 979         }
 980
 981         wdev->config_update = true;
 982 }
 983
 984 /* vlist update call for station list */
 985 static void
 986 station_update(struct vlist_tree *tree, struct vlist_node *node_new,
 987                struct vlist_node *node_old)
 988 {
 989         struct wireless_station *sta_old = container_of_safe(node_old, struct wireless_station, node);
 990         struct wireless_station *sta_new = container_of_safe(node_new, struct wireless_station, node);
 991         struct wireless_interface *vif = container_of(tree, struct wireless_interface, stations);
 992         struct wireless_device *wdev = vif->wdev;
 993
 994         if (sta_old && sta_new) {
 995                 free((void *) sta_old->section);
 996                 sta_old->section = strdup(sta_new->section);
 997                 if (blob_attr_equal(sta_old->config, sta_new->config)) {
 998                         free(sta_new);
 999                         return;
1000                 }
1001
1002                 D(WIRELESS, "Update wireless station %s on device %s", sta_new->name, wdev->name);
1003                 free(sta_old->config);
1004                 sta_old->config = blob_memdup(sta_new->config);
1005                 free(sta_new);
1006         } else if (sta_new) {
1007                 D(WIRELESS, "Create new wireless station %s on device %s", sta_new->name, wdev->name);
1008                 sta_new->section = strdup(sta_new->section);
1009                 sta_new->config = blob_memdup(sta_new->config);
1010         } else if (sta_old) {
1011                 D(WIRELESS, "Delete wireless station %s on device %s", sta_old->name, wdev->name);
1012                 free((void *) sta_old->section);
1013                 free(sta_old->config);
1014                 free(sta_old);
1015         }
1016
1017         wdev->config_update = true;
1018 }
1019
1020 static void
1021 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
1022 {
1023         struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
1024         char buf[128];
1025
1026         while (1) {
1027                 int b = read(fd->fd, buf, sizeof(buf));
1028                 if (b < 0) {
1029                         if (errno == EINTR)
1030                                 continue;
1031
1032                         if (errno == EAGAIN)
1033                                 return;
1034
1035                         goto done;
1036                 }
1037
1038                 if (!b)
1039                         goto done;
1040         }
1041
1042 done:
1043         uloop_timeout_set(&wdev->script_check, 0);
1044         wireless_close_script_proc_fd(wdev);
1045 }
1046
1047 /* watchdog and garbage collector for wireless processes.
1048  * It cleans up terminated processes. If a process is a requirement for the wireless device, it retries the setup */
1049 static void
1050 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
1051 {
1052         struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
1053         struct wireless_process *proc, *tmp;
1054         bool restart = false;
1055
1056         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
1057                 if (wireless_process_check(proc))
1058                         continue;
1059
1060                 D(WIRELESS, "Wireless device '%s' pid %d has terminated", wdev->name, proc->pid);
1061                 if (proc->required)
1062                         restart = true;
1063
1064                 wireless_process_free(wdev, proc);
1065         }
1066
1067         if (restart)
1068                 wireless_device_retry_setup(wdev);
1069         else
1070                 uloop_timeout_set(&wdev->script_check, 1000);
1071 }
1072
1073 /* creates a wireless device object. Called by config */
1074 void
1075 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
1076 {
1077         struct wireless_device *wdev;
1078         char *name_buf;
1079         struct blob_attr *tb[__WDEV_ATTR_MAX];
1080         struct blob_attr *cur;
1081
1082         blobmsg_parse(wdev_policy, __WDEV_ATTR_MAX, tb, blob_data(data), blob_len(data));
1083
1084         wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
1085
1086         cur = tb[WDEV_ATTR_DISABLED];
1087         wdev->disabled = cur && blobmsg_get_bool(cur);
1088
1089         wdev->drv = drv;
1090         wdev->state = IFS_DOWN;
1091         wdev->config_state = IFC_NORMAL;
1092         wdev->name = strcpy(name_buf, name);
1093         wdev->config = data;
1094         wdev->handler_pending = false;
1095
1096         cur = tb[WDEV_ATTR_SERIALIZE];
1097         wdev->serialize = cur && blobmsg_get_bool(cur);
1098
1099         cur = tb[WDEV_ATTR_RECONF];
1100         wdev->reconf = !cur || blobmsg_get_bool(cur);
1101
1102         wdev->retry_setup_failed = false;
1103         wdev->autostart = true;
1104         INIT_LIST_HEAD(&wdev->script_proc);
1105         vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
1106         wdev->interfaces.keep_old = true;
1107
1108         wdev->timeout.cb = wireless_device_setup_timeout;
1109         wdev->script_task.cb = wireless_device_script_task_cb;
1110         wdev->script_task.dir_fd = drv_fd;
1111         wdev->script_task.log_prefix = wdev->name;
1112
1113         wdev->script_proc_fd.fd = -1;
1114         wdev->script_proc_fd.cb = wireless_proc_poll_fd;
1115
1116         wdev->script_check.cb = wireless_device_check_script_tasks;
1117
1118         vlist_add(&wireless_devices, &wdev->node, wdev->name);
1119 }
1120
1121 /* creates a wireless station object. Called by config */
1122 void
1123 wireless_station_create(struct wireless_interface *vif, struct blob_attr *data, const char *section)
1124 {
1125         struct wireless_station *sta;
1126         struct blob_attr *tb[__STA_ATTR_MAX];
1127         struct blob_attr *cur;
1128         char *name_buf;
1129         char name[8];
1130
1131         blobmsg_parse(sta_policy, __STA_ATTR_MAX, tb, blob_data(data), blob_len(data));
1132
1133         cur = tb[STA_ATTR_DISABLED];
1134         if (cur && blobmsg_get_bool(cur))
1135                 return;
1136
1137         sprintf(name, "%d", vif->sta_idx++);
1138
1139         sta = calloc_a(sizeof(*sta),
1140                        &name_buf, strlen(name) + 1);
1141         sta->name = strcpy(name_buf, name);
1142         sta->config = data;
1143         sta->section = section;
1144
1145         vlist_add(&vif->stations, &sta->node, sta->name);
1146 }
1147
1148 /* ubus callback network.wireless.status, runs for every interface, encode the station */
1149 static void
1150 wireless_station_status(struct wireless_station *sta, struct blob_buf *b)
1151 {
1152         void *i;
1153
1154         i = blobmsg_open_table(b, NULL);
1155         if (sta->section)
1156                 blobmsg_add_string(b, "section", sta->section);
1157         put_container(b, sta->config, "config");
1158         blobmsg_close_table(b, i);
1159 }
1160
1161 /* create a vlan object. Called by config */
1162 void
1163 wireless_vlan_create(struct wireless_interface *vif, struct blob_attr *data, const char *section)
1164 {
1165         struct wireless_vlan *vlan;
1166         struct blob_attr *tb[__VLAN_ATTR_MAX];
1167         struct blob_attr *cur;
1168         char *name_buf;
1169         char name[8];
1170
1171         blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(data), blob_len(data));
1172
1173         cur = tb[VLAN_ATTR_DISABLED];
1174         if (cur && blobmsg_get_bool(cur))
1175                 return;
1176
1177         sprintf(name, "%d", vif->vlan_idx++);
1178
1179         vlan = calloc_a(sizeof(*vlan), &name_buf, strlen(name) + 1);
1180         vlan->name = strcpy(name_buf, name);
1181         vlan->config = data;
1182         vlan->section = section;
1183
1184         vlist_add(&vif->vlans, &vlan->node, vlan->name);
1185 }
1186
1187 /* ubus callback network.wireless.status, runs for every interface, encode the vlan informations */
1188 static void
1189 wireless_vlan_status(struct wireless_vlan *vlan, struct blob_buf *b)
1190 {
1191         void *i;
1192
1193         i = blobmsg_open_table(b, NULL);
1194         if (vlan->section)
1195                 blobmsg_add_string(b, "section", vlan->section);
1196         if (vlan->ifname)
1197                 blobmsg_add_string(b, "ifname", vlan->ifname);
1198         put_container(b, vlan->config, "config");
1199         blobmsg_close_table(b, i);
1200 }
1201
1202 /* create a wireless interface object. Called by config */
1203 struct wireless_interface* wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
1204 {
1205         struct wireless_interface *vif;
1206         struct blob_attr *tb[__VIF_ATTR_MAX];
1207         struct blob_attr *cur;
1208         char *name_buf;
1209         char name[8];
1210
1211         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
1212
1213         cur = tb[VIF_ATTR_DISABLED];
1214         if (cur && blobmsg_get_bool(cur))
1215                 return NULL;
1216
1217         sprintf(name, "%d", wdev->vif_idx++);
1218
1219         vif = calloc_a(sizeof(*vif),
1220                        &name_buf, strlen(name) + 1);
1221         vif->name = strcpy(name_buf, name);
1222         vif->wdev = wdev;
1223         vif->config = data;
1224         vif->section = section;
1225         vif->isolate = false;
1226
1227         vlist_init(&vif->vlans, avl_strcmp, vlan_update);
1228         vif->vlans.keep_old = true;
1229
1230         vlist_init(&vif->stations, avl_strcmp, station_update);
1231         vif->stations.keep_old = true;
1232
1233         vlist_add(&wdev->interfaces, &vif->node, vif->name);
1234
1235         return vlist_find(&wdev->interfaces, name, vif, node);
1236 }
1237
1238 /* ubus callback network.wireless.status, runs for every interface */
1239 static void
1240 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
1241 {
1242         struct wireless_vlan *vlan;
1243         struct wireless_station *sta;
1244         void *i, *j;
1245
1246         i = blobmsg_open_table(b, NULL);
1247         if (iface->section)
1248                 blobmsg_add_string(b, "section", iface->section);
1249         if (iface->ifname)
1250                 blobmsg_add_string(b, "ifname", iface->ifname);
1251         put_container(b, iface->config, "config");
1252         j = blobmsg_open_array(b, "vlans");
1253         vlist_for_each_element(&iface->vlans, vlan, node)
1254                 wireless_vlan_status(vlan, b);
1255         blobmsg_close_array(b, j);
1256         j = blobmsg_open_array(b, "stations");
1257         vlist_for_each_element(&iface->stations, sta, node)
1258                 wireless_station_status(sta, b);
1259         blobmsg_close_array(b, j);
1260         blobmsg_close_table(b, i);
1261 }
1262
1263 /* ubus callback network.wireless.status */
1264 void
1265 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
1266 {
1267         struct wireless_interface *iface;
1268         void *c, *i;
1269
1270         c = blobmsg_open_table(b, wdev->name);
1271         blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
1272         blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
1273         blobmsg_add_u8(b, "autostart", wdev->autostart);
1274         blobmsg_add_u8(b, "disabled", wdev->disabled);
1275         blobmsg_add_u8(b, "retry_setup_failed", wdev->retry_setup_failed);
1276         put_container(b, wdev->config, "config");
1277
1278         i = blobmsg_open_array(b, "interfaces");
1279         vlist_for_each_element(&wdev->interfaces, iface, node)
1280                 wireless_interface_status(iface, b);
1281         blobmsg_close_array(b, i);
1282         blobmsg_close_table(b, c);
1283 }
1284
1285 /* ubus callback network.wireless.get_validate */
1286 void
1287 wireless_device_get_validate(struct wireless_device *wdev, struct blob_buf *b)
1288 {
1289         struct uci_blob_param_list *p;
1290         void *c, *d;
1291         int i;
1292
1293         c = blobmsg_open_table(b, wdev->name);
1294
1295         d = blobmsg_open_table(b, "device");
1296         p = wdev->drv->device.config;
1297         for (i = 0; i < p->n_params; i++)
1298                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1299         blobmsg_close_table(b, d);
1300
1301         d = blobmsg_open_table(b, "interface");
1302         p = wdev->drv->interface.config;
1303         for (i = 0; i < p->n_params; i++)
1304                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1305         blobmsg_close_table(b, d);
1306
1307         blobmsg_close_table(b, c);
1308 }
1309
1310 /* ubus callback network.wireless.notify, command = set data, for vif */
1311 static void
1312 wireless_interface_set_data(struct wireless_interface *vif)
1313 {
1314         enum {
1315                 VIF_DATA_IFNAME,
1316                 __VIF_DATA_MAX,
1317         };
1318         static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
1319                 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1320         };
1321         struct blob_attr *tb[__VIF_DATA_MAX];
1322         struct blob_attr *cur;
1323
1324         blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
1325                       blobmsg_data(vif->data), blobmsg_data_len(vif->data));
1326
1327         if ((cur = tb[VIF_DATA_IFNAME]))
1328                 vif->ifname = blobmsg_data(cur);
1329 }
1330
1331 /* ubus callback network.wireless.notify, command = set data, for vlan */
1332 static void
1333 wireless_vlan_set_data(struct wireless_vlan *vlan)
1334 {
1335         enum {
1336                 VLAN_DATA_IFNAME,
1337                 __VLAN_DATA_MAX,
1338         };
1339         static const struct blobmsg_policy data_policy[__VLAN_DATA_MAX] = {
1340                 [VLAN_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1341         };
1342         struct blob_attr *tb[__VLAN_DATA_MAX];
1343         struct blob_attr *cur;
1344
1345         blobmsg_parse(data_policy, __VLAN_DATA_MAX, tb,
1346                       blobmsg_data(vlan->data), blobmsg_data_len(vlan->data));
1347
1348         if ((cur = tb[VLAN_DATA_IFNAME]))
1349                 vlan->ifname = blobmsg_data(cur);
1350 }
1351
1352 /* ubus callback network.wireless.notify, command = process add */
1353 static int
1354 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
1355 {
1356         enum {
1357                 PROC_ATTR_PID,
1358                 PROC_ATTR_EXE,
1359                 PROC_ATTR_REQUIRED,
1360                 PROC_ATTR_KEEP,
1361                 __PROC_ATTR_MAX
1362         };
1363         static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
1364                 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
1365                 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
1366                 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
1367                 [PROC_ATTR_KEEP] = { .name = "keep", .type = BLOBMSG_TYPE_BOOL },
1368         };
1369         struct blob_attr *tb[__PROC_ATTR_MAX];
1370         struct wireless_process *proc;
1371         char *name;
1372         int pid;
1373
1374         if (!data)
1375                 return UBUS_STATUS_INVALID_ARGUMENT;
1376
1377         blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1378         if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
1379                 return UBUS_STATUS_INVALID_ARGUMENT;
1380
1381         pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
1382         if (pid < 2)
1383                 return UBUS_STATUS_INVALID_ARGUMENT;
1384
1385         proc = calloc_a(sizeof(*proc),
1386                 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
1387
1388         proc->pid = pid;
1389         proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
1390
1391         if (tb[PROC_ATTR_REQUIRED])
1392                 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
1393
1394         if (tb[PROC_ATTR_KEEP])
1395                 proc->keep = blobmsg_get_bool(tb[PROC_ATTR_KEEP]);
1396
1397         D(WIRELESS, "Wireless device '%s' add pid %d", wdev->name, proc->pid);
1398         list_add(&proc->list, &wdev->script_proc);
1399         uloop_timeout_set(&wdev->script_check, 0);
1400
1401         return 0;
1402 }
1403
1404 /* ubus callback network.wireless.notify, command = process kill all */
1405 static int
1406 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
1407                                  struct ubus_request_data *req)
1408 {
1409         enum {
1410                 KILL_ATTR_SIGNAL,
1411                 KILL_ATTR_IMMEDIATE,
1412                 __KILL_ATTR_MAX
1413         };
1414         static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
1415                 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
1416                 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
1417         };
1418         struct blob_attr *tb[__KILL_ATTR_MAX];
1419         struct blob_attr *cur;
1420         bool immediate = false;
1421         int signal = SIGTERM;
1422
1423         blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1424
1425         if ((cur = tb[KILL_ATTR_SIGNAL]))
1426                 signal = blobmsg_get_u32(cur);
1427
1428         if ((cur = tb[KILL_ATTR_IMMEDIATE]))
1429                 immediate = blobmsg_get_bool(cur);
1430
1431         if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
1432                 return UBUS_STATUS_PERMISSION_DENIED;
1433
1434         wireless_process_kill_all(wdev, signal, immediate);
1435
1436         if (list_empty(&wdev->script_proc))
1437                 return 0;
1438
1439         wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
1440         ubus_defer_request(ubus_ctx, req, wdev->kill_request);
1441
1442         return 0;
1443 }
1444
1445 /* ubus callback network.wireless.notify, command = set_retry */
1446 static int
1447 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
1448 {
1449         static const struct blobmsg_policy retry_policy = {
1450                 .name = "retry", .type = BLOBMSG_TYPE_INT32
1451         };
1452         struct blob_attr *val;
1453
1454         blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
1455         if (val)
1456                 wdev->retry = blobmsg_get_u32(val);
1457         else
1458                 wdev->retry = WIRELESS_SETUP_RETRY;
1459         __wireless_device_set_up(wdev, 0);
1460         netifd_log_message(L_NOTICE, "Wireless device '%s' set retry=%d\n", wdev->name, wdev->retry);
1461         return 0;
1462 }
1463
1464 enum {
1465         NOTIFY_CMD_UP = 0,
1466         NOTIFY_CMD_SET_DATA = 1,
1467         NOTIFY_CMD_PROCESS_ADD = 2,
1468         NOTIFY_CMD_PROCESS_KILL_ALL = 3,
1469         NOTIFY_CMD_SET_RETRY = 4,
1470 };
1471
1472 /* ubus callback network.wireless.notify */
1473 int
1474 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
1475                        struct ubus_request_data *req)
1476 {
1477         enum {
1478                 NOTIFY_ATTR_COMMAND,
1479                 NOTIFY_ATTR_VIF,
1480                 NOTIFY_ATTR_VLAN,
1481                 NOTIFY_ATTR_DATA,
1482                 __NOTIFY_MAX,
1483         };
1484         static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
1485                 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
1486                 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
1487                 [NOTIFY_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_STRING },
1488                 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
1489         };
1490         struct wireless_interface *vif = NULL;
1491         struct wireless_vlan *vlan = NULL;
1492         struct blob_attr *tb[__NOTIFY_MAX];
1493         struct blob_attr *cur, **pdata;
1494
1495         blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
1496
1497         if (!tb[NOTIFY_ATTR_COMMAND])
1498                 return UBUS_STATUS_INVALID_ARGUMENT;
1499
1500         if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
1501                 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
1502                 if (!vif)
1503                         return UBUS_STATUS_NOT_FOUND;
1504         }
1505
1506         if ((cur = tb[NOTIFY_ATTR_VLAN]) != NULL) {
1507                 if (!vif)
1508                         return UBUS_STATUS_NOT_FOUND;
1509                 vlan = vlist_find(&vif->vlans, blobmsg_data(cur), vlan, node);
1510                 if (!vlan)
1511                         return UBUS_STATUS_NOT_FOUND;
1512         }
1513
1514         cur = tb[NOTIFY_ATTR_DATA];
1515         if (!cur)
1516                 return UBUS_STATUS_INVALID_ARGUMENT;
1517
1518         switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
1519         case NOTIFY_CMD_UP:
1520                 if (vif || vlan)
1521                         return UBUS_STATUS_INVALID_ARGUMENT;
1522
1523                 if (wdev->state != IFS_SETUP)
1524                         return UBUS_STATUS_PERMISSION_DENIED;
1525
1526                 wireless_device_mark_up(wdev);
1527                 break;
1528         case NOTIFY_CMD_SET_DATA:
1529                 if (vlan)
1530                         pdata = &vlan->data;
1531                 else if (vif)
1532                         pdata = &vif->data;
1533                 else
1534                         pdata = &wdev->data;
1535
1536                 free(*pdata);
1537                 *pdata = blob_memdup(cur);
1538                 if (vlan)
1539                         wireless_vlan_set_data(vlan);
1540                 else if (vif)
1541                         wireless_interface_set_data(vif);
1542                 wdev_prepare_prev_config(wdev);
1543                 break;
1544         case NOTIFY_CMD_PROCESS_ADD:
1545                 return wireless_device_add_process(wdev, cur);
1546         case NOTIFY_CMD_PROCESS_KILL_ALL:
1547                 return wireless_device_process_kill_all(wdev, cur, req);
1548         case NOTIFY_CMD_SET_RETRY:
1549                 return wireless_device_set_retry(wdev, cur);
1550         default:
1551                 return UBUS_STATUS_INVALID_ARGUMENT;
1552         }
1553
1554         return 0;
1555 }
1556
1557 static void
1558 wdev_check_network_enabled(struct wireless_device *wdev)
1559 {
1560         struct wireless_interface *vif;
1561         struct interface *iface;
1562         struct blob_attr *cur;
1563         size_t rem;
1564
1565         vlist_for_each_element(&wdev->interfaces, vif, node) {
1566                 int enabled = -1;
1567
1568                 blobmsg_for_each_attr(cur, vif->network, rem) {
1569                         iface = vlist_find(&interfaces, blobmsg_get_string(cur), iface, node);
1570                         if (!iface)
1571                                 continue;
1572
1573                         if (iface->autostart) {
1574                                 enabled = 1;
1575                                 break;
1576                         }
1577                         if (enabled != 1)
1578                                 enabled = 0;
1579                 }
1580
1581                 if (vif->disabled == !enabled)
1582                         continue;
1583
1584                 vif->disabled = !enabled;
1585                 wdev->config_update = true;
1586         }
1587 }
1588
1589 static void
1590 __wireless_start_pending(struct uloop_timeout *t)
1591 {
1592         struct wireless_device *wdev;
1593
1594         vlist_for_each_element(&wireless_devices, wdev, node) {
1595                 wdev_check_network_enabled(wdev);
1596                 if (wdev->config_update)
1597                         wdev_set_config_state(wdev, IFC_RELOAD);
1598                 __wireless_device_set_up(wdev, 0);
1599         }
1600 }
1601
1602 void wireless_start_pending(int timeout)
1603 {
1604         static struct uloop_timeout timer = {
1605                 .cb = __wireless_start_pending
1606         };
1607
1608         if (timeout) {
1609                 uloop_timeout_set(&timer, timeout);
1610                 return;
1611         }
1612
1613         uloop_timeout_cancel(&timer);
1614         timer.cb(&timer);
1615 }
1616
1617 void wireless_check_network_enabled(void)
1618 {
1619         struct wireless_device *wdev;
1620
1621         vlist_for_each_element(&wireless_devices, wdev, node) {
1622                 wdev_check_network_enabled(wdev);
1623
1624                 if (wdev->config_update)
1625                         wireless_start_pending(1000);
1626         }
1627 }
1628
1629 void wireless_device_hotplug_event(const char *name, bool add)
1630 {
1631         struct wireless_interface *vif;
1632         struct wireless_device *wdev;
1633         const char *s;
1634         size_t len;
1635
1636         s = strstr(name, ".sta");
1637         if (s) {
1638                 if (strchr(s + 4, '.'))
1639                         return;
1640
1641                 len = s - name;
1642         } else if (!device_find(name)) {
1643                 len = strlen(name);
1644         } else {
1645                 return;
1646         }
1647
1648         vlist_for_each_element(&wireless_devices, wdev, node) {
1649                 vlist_for_each_element(&wdev->interfaces, vif, node) {
1650                         if (!vif->ifname)
1651                                 continue;
1652
1653                         if (strlen(vif->ifname) != len ||
1654                             strncmp(vif->ifname, name, len) != 0)
1655                                 continue;
1656
1657                         wireless_interface_handle_link(vif, name, add);
1658                 }
1659         }
1660 }