wireless.c

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