wireless.c

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