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 if (wdev->script_proc_fd.fd >= 0) 435 wireless_close_script_proc_fd(wdev); 436 437 wdev->script_proc_fd.fd = fds[0]; 438 uloop_fd_add(&wdev->script_proc_fd, 439 ULOOP_READ | ULOOP_EDGE_TRIGGER); 440 } 441 442 netifd_start_process(argv, NULL, &wdev->script_task); 443 444 if (fds[1] >= 0) 445 close(fds[1]); 446 447 free(config); 448 } 449 450 static void 451 wireless_handler_next(void) 452 { 453 struct wireless_device *wdev; 454 455 if (handler_pending) 456 return; 457 if (list_empty(&handlers)) 458 return; 459 wdev = list_first_entry(&handlers, struct wireless_device, handler); 460 list_del(&wdev->handler); 461 wdev->handler_pending = false; 462 wireless_device_run_handler(wdev, wdev->handler_action); 463 } 464 465 static void 466 __wireless_device_set_up(struct wireless_device *wdev, int force) 467 { 468 if (wdev->disabled) 469 return; 470 471 if (wdev->retry_setup_failed) 472 return; 473 474 if (!wdev->autostart) 475 return; 476 477 if (!force && (wdev->state != IFS_DOWN || config_init)) 478 return; 479 480 free(wdev->prev_config); 481 wdev->prev_config = NULL; 482 wdev->state = IFS_SETUP; 483 wireless_device_run_handler(wdev, true); 484 } 485 486 static void 487 wireless_device_free(struct wireless_device *wdev) 488 { 489 wireless_handler_stop(wdev); 490 vlist_flush_all(&wdev->interfaces); 491 vlist_flush_all(&wdev->vlans); 492 vlist_flush_all(&wdev->stations); 493 avl_delete(&wireless_devices.avl, &wdev->node.avl); 494 free(wdev->config); 495 free(wdev->prev_config); 496 free(wdev); 497 } 498 499 static void 500 wdev_handle_config_change(struct wireless_device *wdev) 501 { 502 enum interface_config_state state = wdev->config_state; 503 504 switch(state) { 505 case IFC_RELOAD: 506 wdev->retry = WIRELESS_SETUP_RETRY; 507 wdev->retry_setup_failed = false; 508 fallthrough; 509 case IFC_NORMAL: 510 __wireless_device_set_up(wdev, 0); 511 512 wdev->config_state = IFC_NORMAL; 513 break; 514 case IFC_REMOVE: 515 wireless_device_free(wdev); 516 break; 517 } 518 } 519 520 static void 521 wireless_device_mark_down(struct wireless_device *wdev) 522 { 523 struct wireless_interface *vif; 524 struct wireless_vlan *vlan; 525 526 netifd_log_message(L_NOTICE, "Wireless device '%s' is now down\n", wdev->name); 527 528 vlist_for_each_element(&wdev->vlans, vlan, node) 529 wireless_vlan_handle_link(vlan, false); 530 531 vlist_for_each_element(&wdev->interfaces, vif, node) 532 wireless_interface_handle_link(vif, NULL, false); 533 534 wireless_process_kill_all(wdev, SIGTERM, true); 535 536 wdev->cancel = false; 537 wdev->state = IFS_DOWN; 538 wireless_device_free_state(wdev); 539 wdev_handle_config_change(wdev); 540 } 541 542 /* timeout callback to protect the tear down */ 543 static void 544 wireless_device_setup_timeout(struct uloop_timeout *timeout) 545 { 546 struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout); 547 548 if (wdev->handler_pending) { 549 wdev->handler_pending = false; 550 list_del(&wdev->handler); 551 } 552 netifd_kill_process(&wdev->script_task); 553 wdev->script_task.cb(&wdev->script_task, -1); 554 wireless_device_mark_down(wdev); 555 } 556 557 void 558 wireless_device_set_up(struct wireless_device *wdev) 559 { 560 wdev->retry = WIRELESS_SETUP_RETRY; 561 wdev->autostart = true; 562 __wireless_device_set_up(wdev, 0); 563 } 564 565 void 566 wireless_device_reconf(struct wireless_device *wdev) 567 { 568 wdev->retry = WIRELESS_SETUP_RETRY; 569 wdev->autostart = true; 570 __wireless_device_set_up(wdev, wdev->reconf && (wdev->state == IFS_UP)); 571 } 572 573 static void 574 __wireless_device_set_down(struct wireless_device *wdev) 575 { 576 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN) 577 return; 578 579 if (wdev->script_task.uloop.pending) { 580 wireless_device_setup_cancel(wdev); 581 return; 582 } 583 584 wdev->state = IFS_TEARDOWN; 585 wireless_device_run_handler(wdev, false); 586 } 587 588 /* ubus callback network.wireless.notify, command = up */ 589 static void 590 wireless_device_mark_up(struct wireless_device *wdev) 591 { 592 struct wireless_interface *vif; 593 struct wireless_vlan *vlan; 594 595 if (wdev->cancel) { 596 wdev->cancel = false; 597 __wireless_device_set_down(wdev); 598 return; 599 } 600 601 netifd_log_message(L_NOTICE, "Wireless device '%s' is now up\n", wdev->name); 602 wdev->retry = WIRELESS_SETUP_RETRY; 603 wdev->state = IFS_UP; 604 vlist_for_each_element(&wdev->interfaces, vif, node) 605 wireless_interface_handle_link(vif, NULL, true); 606 vlist_for_each_element(&wdev->vlans, vlan, node) 607 wireless_vlan_handle_link(vlan, true); 608 } 609 610 static void 611 wireless_device_retry_setup(struct wireless_device *wdev) 612 { 613 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel) 614 return; 615 616 netifd_log_message(wdev->retry ? L_WARNING : L_CRIT, 617 "Wireless device '%s' setup failed, retry=%d\n", 618 wdev->name, wdev->retry); 619 if (--wdev->retry < 0) 620 wdev->retry_setup_failed = true; 621 622 __wireless_device_set_down(wdev); 623 } 624 625 static void 626 wireless_device_script_task_cb(struct netifd_process *proc, int ret) 627 { 628 struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task); 629 630 switch (wdev->state) { 631 case IFS_SETUP: 632 wireless_device_retry_setup(wdev); 633 break; 634 case IFS_TEARDOWN: 635 wireless_device_mark_down(wdev); 636 break; 637 default: 638 break; 639 } 640 641 if (wdev->serialize) { 642 handler_pending = false; 643 wireless_handler_next(); 644 } 645 } 646 647 void 648 wireless_device_set_down(struct wireless_device *wdev) 649 { 650 wdev->retry_setup_failed = false; 651 wdev->autostart = false; 652 __wireless_device_set_down(wdev); 653 } 654 655 static void 656 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s) 657 { 658 if (wdev->config_state != IFC_NORMAL) 659 return; 660 661 wdev->config_state = s; 662 if (wdev->state == IFS_DOWN) 663 wdev_handle_config_change(wdev); 664 else if (!wdev->reconf || wdev->state != IFS_UP) 665 __wireless_device_set_down(wdev); 666 } 667 668 static void 669 wdev_prepare_prev_config(struct wireless_device *wdev) 670 { 671 if (wdev->prev_config) 672 return; 673 674 prepare_config(wdev, &b, false); 675 wdev->prev_config = blob_memdup(b.head); 676 } 677 678 static void 679 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new) 680 { 681 struct blob_attr *new_config = wd_new->config; 682 bool disabled = wd_new->disabled; 683 684 free(wd_new); 685 686 wdev_prepare_prev_config(wdev); 687 if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled) 688 return; 689 690 D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name); 691 free(wdev->config); 692 wdev->config = blob_memdup(new_config); 693 wdev->disabled = disabled; 694 wdev_set_config_state(wdev, IFC_RELOAD); 695 } 696 697 static void 698 wdev_create(struct wireless_device *wdev) 699 { 700 wdev->retry = WIRELESS_SETUP_RETRY; 701 wdev->config = blob_memdup(wdev->config); 702 } 703 704 /* vlist update call for wireless device list */ 705 static void 706 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new, 707 struct vlist_node *node_old) 708 { 709 struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node); 710 struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node); 711 712 if (wd_old && wd_new) { 713 D(WIRELESS, "Update wireless device '%s'\n", wd_old->name); 714 wdev_change_config(wd_old, wd_new); 715 } else if (wd_old) { 716 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name); 717 wdev_set_config_state(wd_old, IFC_REMOVE); 718 } else if (wd_new) { 719 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name); 720 wdev_create(wd_new); 721 } 722 } 723 724 /* wireless netifd script handler */ 725 static void 726 wireless_add_handler(const char *script, const char *name, json_object *obj) 727 { 728 struct wireless_driver *drv; 729 char *name_str, *script_str; 730 json_object *dev_config_obj, *iface_config_obj, *vlan_config_obj, *station_config_obj; 731 struct uci_blob_param_list *dev_config, *iface_config, *vlan_config, *station_config; 732 733 dev_config_obj = json_get_field(obj, "device", json_type_array); 734 iface_config_obj = json_get_field(obj, "iface", json_type_array); 735 vlan_config_obj = json_get_field(obj, "vlan", json_type_array); 736 station_config_obj = json_get_field(obj, "station", json_type_array); 737 738 if (!dev_config_obj || !iface_config_obj || !vlan_config_obj || !station_config_obj) 739 return; 740 741 drv = calloc_a(sizeof(*drv), 742 &dev_config, sizeof(*dev_config) + sizeof(void *), 743 &iface_config, sizeof(*iface_config) + sizeof(void *), 744 &vlan_config, sizeof(*vlan_config) + sizeof(void *), 745 &station_config, sizeof(*station_config) + sizeof(void *), 746 &name_str, strlen(name) + 1, 747 &script_str, strlen(script) + 1); 748 749 drv->name = strcpy(name_str, name); 750 drv->script = strcpy(script_str, script); 751 752 dev_config->n_next = 1; 753 dev_config->next[0] = &wdev_param; 754 drv->device.config = dev_config; 755 756 iface_config->n_next = 1; 757 iface_config->next[0] = &vif_param; 758 drv->interface.config = iface_config; 759 760 vlan_config->n_next = 1; 761 vlan_config->next[0] = &vlan_param; 762 drv->vlan.config = vlan_config; 763 764 station_config->n_next = 1; 765 station_config->next[0] = &station_param; 766 drv->station.config = station_config; 767 768 drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj); 769 drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj); 770 drv->vlan.buf = netifd_handler_parse_config(drv->vlan.config, vlan_config_obj); 771 drv->station.buf = netifd_handler_parse_config(drv->station.config, station_config_obj); 772 773 drv->node.key = drv->name; 774 avl_insert(&wireless_drivers, &drv->node); 775 D(WIRELESS, "Add handler for script %s: %s\n", script, name); 776 } 777 778 void wireless_init(void) 779 { 780 vlist_init(&wireless_devices, avl_strcmp, wdev_update); 781 wireless_devices.keep_old = true; 782 wireless_devices.no_delete = true; 783 784 avl_init(&wireless_drivers, avl_strcmp, false, NULL); 785 drv_fd = netifd_open_subdir("wireless"); 786 if (drv_fd < 0) 787 return; 788 789 netifd_init_script_handlers(drv_fd, wireless_add_handler); 790 } 791 792 /* parse blob config into the wireless interface object */ 793 static void 794 wireless_interface_init_config(struct wireless_interface *vif) 795 { 796 struct blob_attr *tb[__VIF_ATTR_MAX]; 797 struct blob_attr *cur; 798 799 vif->network = NULL; 800 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config)); 801 802 if ((cur = tb[VIF_ATTR_NETWORK])) 803 vif->network = cur; 804 805 cur = tb[VIF_ATTR_MODE]; 806 if (cur) 807 vif->ap_mode = !strcmp(blobmsg_get_string(cur), "ap"); 808 809 if (!vif->ap_mode) 810 return; 811 812 cur = tb[VIF_ATTR_ISOLATE]; 813 if (cur) 814 vif->isolate = blobmsg_get_bool(cur); 815 816 cur = tb[VIF_ATTR_PROXYARP]; 817 if (cur) 818 vif->proxyarp = blobmsg_get_bool(cur); 819 820 } 821 822 /* vlist update call for wireless interface list */ 823 static void 824 vif_update(struct vlist_tree *tree, struct vlist_node *node_new, 825 struct vlist_node *node_old) 826 { 827 struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node); 828 struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node); 829 struct wireless_device *wdev; 830 831 if (vif_old) 832 wdev = vif_old->wdev; 833 else 834 wdev = vif_new->wdev; 835 836 if (vif_old && vif_new) { 837 free((void *) vif_old->section); 838 vif_old->section = strdup(vif_new->section); 839 if (blob_attr_equal(vif_old->config, vif_new->config)) { 840 free(vif_new); 841 return; 842 } 843 844 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name); 845 wireless_interface_handle_link(vif_old, NULL, false); 846 free(vif_old->config); 847 vif_old->config = blob_memdup(vif_new->config); 848 vif_old->isolate = vif_new->isolate; 849 vif_old->ap_mode = vif_new->ap_mode; 850 wireless_interface_init_config(vif_old); 851 free(vif_new); 852 } else if (vif_new) { 853 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name); 854 vif_new->section = strdup(vif_new->section); 855 vif_new->config = blob_memdup(vif_new->config); 856 wireless_interface_init_config(vif_new); 857 } else if (vif_old) { 858 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name); 859 wireless_interface_handle_link(vif_old, NULL, false); 860 free((void *) vif_old->section); 861 free(vif_old->config); 862 free(vif_old); 863 } 864 865 wdev_set_config_state(wdev, IFC_RELOAD); 866 } 867 868 /* parse blob config into the vlan object */ 869 static void 870 wireless_vlan_init_config(struct wireless_vlan *vlan) 871 { 872 struct blob_attr *tb[__VLAN_ATTR_MAX]; 873 struct blob_attr *cur; 874 875 vlan->network = NULL; 876 blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(vlan->config), blob_len(vlan->config)); 877 878 if ((cur = tb[VLAN_ATTR_NETWORK])) 879 vlan->network = cur; 880 881 cur = tb[VLAN_ATTR_ISOLATE]; 882 if (cur) 883 vlan->isolate = blobmsg_get_bool(cur); 884 } 885 886 /* vlist update call for vlan list */ 887 static void 888 vlan_update(struct vlist_tree *tree, struct vlist_node *node_new, 889 struct vlist_node *node_old) 890 { 891 struct wireless_vlan *vlan_old = container_of(node_old, struct wireless_vlan, node); 892 struct wireless_vlan *vlan_new = container_of(node_new, struct wireless_vlan, node); 893 struct wireless_device *wdev; 894 895 if (vlan_old) 896 wdev = vlan_old->wdev; 897 else 898 wdev = vlan_new->wdev; 899 900 if (vlan_old && vlan_new) { 901 free((void *) vlan_old->section); 902 vlan_old->section = strdup(vlan_new->section); 903 if (blob_attr_equal(vlan_old->config, vlan_new->config)) { 904 free(vlan_new); 905 return; 906 } 907 908 D(WIRELESS, "Update wireless vlan %s on device %s\n", vlan_new->name, wdev->name); 909 wireless_vlan_handle_link(vlan_old, false); 910 free(vlan_old->config); 911 vlan_old->config = blob_memdup(vlan_new->config); 912 vlan_old->isolate = vlan_new->isolate; 913 wireless_vlan_init_config(vlan_old); 914 free(vlan_new); 915 } else if (vlan_new) { 916 D(WIRELESS, "Create new wireless vlan %s on device %s\n", vlan_new->name, wdev->name); 917 vlan_new->section = strdup(vlan_new->section); 918 vlan_new->config = blob_memdup(vlan_new->config); 919 wireless_vlan_init_config(vlan_new); 920 } else if (vlan_old) { 921 D(WIRELESS, "Delete wireless interface %s on device %s\n", vlan_old->name, wdev->name); 922 wireless_vlan_handle_link(vlan_old, false); 923 free((void *) vlan_old->section); 924 free(vlan_old->config); 925 free(vlan_old); 926 } 927 928 wdev_set_config_state(wdev, IFC_RELOAD); 929 } 930 931 /* vlist update call for station list */ 932 static void 933 station_update(struct vlist_tree *tree, struct vlist_node *node_new, 934 struct vlist_node *node_old) 935 { 936 struct wireless_station *sta_old = container_of(node_old, struct wireless_station, node); 937 struct wireless_station *sta_new = container_of(node_new, struct wireless_station, node); 938 struct wireless_device *wdev; 939 940 if (sta_old) 941 wdev = sta_old->wdev; 942 else 943 wdev = sta_new->wdev; 944 945 if (sta_old && sta_new) { 946 free((void *) sta_old->section); 947 sta_old->section = strdup(sta_new->section); 948 if (blob_attr_equal(sta_old->config, sta_new->config)) { 949 free(sta_new); 950 return; 951 } 952 953 D(WIRELESS, "Update wireless station %s on device %s\n", sta_new->name, wdev->name); 954 free(sta_old->config); 955 sta_old->config = blob_memdup(sta_new->config); 956 free(sta_new); 957 } else if (sta_new) { 958 D(WIRELESS, "Create new wireless station %s on device %s\n", sta_new->name, wdev->name); 959 sta_new->section = strdup(sta_new->section); 960 sta_new->config = blob_memdup(sta_new->config); 961 } else if (sta_old) { 962 D(WIRELESS, "Delete wireless station %s on device %s\n", sta_old->name, wdev->name); 963 free((void *) sta_old->section); 964 free(sta_old->config); 965 free(sta_old); 966 } 967 968 wdev_set_config_state(wdev, IFC_RELOAD); 969 } 970 971 static void 972 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events) 973 { 974 struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd); 975 char buf[128]; 976 977 while (1) { 978 int b = read(fd->fd, buf, sizeof(buf)); 979 if (b < 0) { 980 if (errno == EINTR) 981 continue; 982 983 if (errno == EAGAIN) 984 return; 985 986 goto done; 987 } 988 989 if (!b) 990 goto done; 991 } 992 993 done: 994 uloop_timeout_set(&wdev->script_check, 0); 995 wireless_close_script_proc_fd(wdev); 996 } 997 998 /* watchdog and garbage collector for wireless processes. 999 * It cleans up terminated processes. If a process is a requirement for the wireless device, it retries the setup */ 1000 static void 1001 wireless_device_check_script_tasks(struct uloop_timeout *timeout) 1002 { 1003 struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check); 1004 struct wireless_process *proc, *tmp; 1005 bool restart = false; 1006 1007 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) { 1008 if (wireless_process_check(proc)) 1009 continue; 1010 1011 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid); 1012 if (proc->required) 1013 restart = true; 1014 1015 wireless_process_free(wdev, proc); 1016 } 1017 1018 if (restart) 1019 wireless_device_retry_setup(wdev); 1020 else 1021 uloop_timeout_set(&wdev->script_check, 1000); 1022 } 1023 1024 /* creates a wireless device object. Called by config */ 1025 void 1026 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data) 1027 { 1028 struct wireless_device *wdev; 1029 char *name_buf; 1030 struct blob_attr *tb[__WDEV_ATTR_MAX]; 1031 struct blob_attr *cur; 1032 1033 blobmsg_parse(wdev_policy, __WDEV_ATTR_MAX, tb, blob_data(data), blob_len(data)); 1034 1035 wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1); 1036 1037 cur = tb[WDEV_ATTR_DISABLED]; 1038 wdev->disabled = cur && blobmsg_get_bool(cur); 1039 1040 wdev->drv = drv; 1041 wdev->state = IFS_DOWN; 1042 wdev->config_state = IFC_NORMAL; 1043 wdev->name = strcpy(name_buf, name); 1044 wdev->config = data; 1045 wdev->handler_pending = false; 1046 1047 cur = tb[WDEV_ATTR_SERIALIZE]; 1048 wdev->serialize = cur && blobmsg_get_bool(cur); 1049 1050 cur = tb[WDEV_ATTR_RECONF]; 1051 wdev->reconf = cur && blobmsg_get_bool(cur); 1052 1053 wdev->retry_setup_failed = false; 1054 wdev->autostart = true; 1055 INIT_LIST_HEAD(&wdev->script_proc); 1056 vlist_init(&wdev->interfaces, avl_strcmp, vif_update); 1057 wdev->interfaces.keep_old = true; 1058 vlist_init(&wdev->vlans, avl_strcmp, vlan_update); 1059 wdev->vlans.keep_old = true; 1060 vlist_init(&wdev->stations, avl_strcmp, station_update); 1061 wdev->stations.keep_old = true; 1062 1063 wdev->timeout.cb = wireless_device_setup_timeout; 1064 wdev->script_task.cb = wireless_device_script_task_cb; 1065 wdev->script_task.dir_fd = drv_fd; 1066 wdev->script_task.log_prefix = wdev->name; 1067 1068 wdev->script_proc_fd.fd = -1; 1069 wdev->script_proc_fd.cb = wireless_proc_poll_fd; 1070 1071 wdev->script_check.cb = wireless_device_check_script_tasks; 1072 1073 vlist_add(&wireless_devices, &wdev->node, wdev->name); 1074 } 1075 1076 /* creates a wireless station object. Called by config */ 1077 void 1078 wireless_station_create(struct wireless_device *wdev, char *vif, struct blob_attr *data, const char *section) 1079 { 1080 struct wireless_station *sta; 1081 struct blob_attr *tb[__STA_ATTR_MAX]; 1082 struct blob_attr *cur; 1083 char *name_buf, *vif_buf; 1084 char name[8]; 1085 1086 blobmsg_parse(sta_policy, __STA_ATTR_MAX, tb, blob_data(data), blob_len(data)); 1087 1088 cur = tb[STA_ATTR_DISABLED]; 1089 if (cur && blobmsg_get_bool(cur)) 1090 return; 1091 1092 sprintf(name, "%d", wdev->sta_idx++); 1093 1094 sta = calloc_a(sizeof(*sta), 1095 &name_buf, strlen(name) + 1, 1096 &vif_buf, strlen(vif) + 1); 1097 sta->name = strcpy(name_buf, name); 1098 sta->vif = strcpy(vif_buf, vif); 1099 sta->wdev = wdev; 1100 sta->config = data; 1101 sta->section = section; 1102 1103 vlist_add(&wdev->stations, &sta->node, sta->name); 1104 } 1105 1106 /* ubus callback network.wireless.status, runs for every interface, encode the station */ 1107 static void 1108 wireless_station_status(struct wireless_station *sta, struct blob_buf *b) 1109 { 1110 void *i; 1111 1112 i = blobmsg_open_table(b, NULL); 1113 if (sta->section) 1114 blobmsg_add_string(b, "section", sta->section); 1115 put_container(b, sta->config, "config"); 1116 blobmsg_close_table(b, i); 1117 } 1118 1119 /* create a vlan object. Called by config */ 1120 void 1121 wireless_vlan_create(struct wireless_device *wdev, char *vif, struct blob_attr *data, const char *section) 1122 { 1123 struct wireless_vlan *vlan; 1124 struct blob_attr *tb[__VLAN_ATTR_MAX]; 1125 struct blob_attr *cur; 1126 char *name_buf, *vif_buf; 1127 char name[8]; 1128 1129 blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(data), blob_len(data)); 1130 1131 cur = tb[VLAN_ATTR_DISABLED]; 1132 if (cur && blobmsg_get_bool(cur)) 1133 return; 1134 1135 sprintf(name, "%d", wdev->vlan_idx++); 1136 1137 vlan = calloc_a(sizeof(*vlan), 1138 &name_buf, strlen(name) + 1, 1139 &vif_buf, strlen(vif) + 1); 1140 vlan->name = strcpy(name_buf, name); 1141 vlan->vif = strcpy(vif_buf, vif); 1142 vlan->wdev = wdev; 1143 vlan->config = data; 1144 vlan->section = section; 1145 vlan->isolate = false; 1146 1147 vlist_add(&wdev->vlans, &vlan->node, vlan->name); 1148 } 1149 1150 /* ubus callback network.wireless.status, runs for every interface, encode the vlan informations */ 1151 static void 1152 wireless_vlan_status(struct wireless_vlan *vlan, struct blob_buf *b) 1153 { 1154 void *i; 1155 1156 i = blobmsg_open_table(b, NULL); 1157 if (vlan->section) 1158 blobmsg_add_string(b, "section", vlan->section); 1159 if (vlan->ifname) 1160 blobmsg_add_string(b, "ifname", vlan->ifname); 1161 put_container(b, vlan->config, "config"); 1162 blobmsg_close_table(b, i); 1163 } 1164 1165 /* create a wireless interface object. Called by config */ 1166 struct wireless_interface* wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section) 1167 { 1168 struct wireless_interface *vif; 1169 struct blob_attr *tb[__VIF_ATTR_MAX]; 1170 struct blob_attr *cur; 1171 char *name_buf; 1172 char name[8]; 1173 1174 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data)); 1175 1176 cur = tb[VIF_ATTR_DISABLED]; 1177 if (cur && blobmsg_get_bool(cur)) 1178 return NULL; 1179 1180 sprintf(name, "%d", wdev->vif_idx++); 1181 1182 vif = calloc_a(sizeof(*vif), 1183 &name_buf, strlen(name) + 1); 1184 vif->name = strcpy(name_buf, name); 1185 vif->wdev = wdev; 1186 vif->config = data; 1187 vif->section = section; 1188 vif->isolate = false; 1189 1190 vlist_add(&wdev->interfaces, &vif->node, vif->name); 1191 1192 return vlist_find(&wdev->interfaces, name, vif, node); 1193 } 1194 1195 /* ubus callback network.wireless.status, runs for every interface */ 1196 static void 1197 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b) 1198 { 1199 struct wireless_vlan *vlan; 1200 struct wireless_station *sta; 1201 void *i, *j; 1202 1203 i = blobmsg_open_table(b, NULL); 1204 if (iface->section) 1205 blobmsg_add_string(b, "section", iface->section); 1206 if (iface->ifname) 1207 blobmsg_add_string(b, "ifname", iface->ifname); 1208 put_container(b, iface->config, "config"); 1209 j = blobmsg_open_array(b, "vlans"); 1210 vlist_for_each_element(&iface->wdev->vlans, vlan, node) 1211 if (!strcmp(iface->name, vlan->vif)) 1212 wireless_vlan_status(vlan, b); 1213 blobmsg_close_array(b, j); 1214 j = blobmsg_open_array(b, "stations"); 1215 vlist_for_each_element(&iface->wdev->stations, sta, node) 1216 if (!strcmp(iface->name, sta->vif)) 1217 wireless_station_status(sta, b); 1218 blobmsg_close_array(b, j); 1219 blobmsg_close_table(b, i); 1220 } 1221 1222 /* ubus callback network.wireless.status */ 1223 void 1224 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b) 1225 { 1226 struct wireless_interface *iface; 1227 void *c, *i; 1228 1229 c = blobmsg_open_table(b, wdev->name); 1230 blobmsg_add_u8(b, "up", wdev->state == IFS_UP); 1231 blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN); 1232 blobmsg_add_u8(b, "autostart", wdev->autostart); 1233 blobmsg_add_u8(b, "disabled", wdev->disabled); 1234 blobmsg_add_u8(b, "retry_setup_failed", wdev->retry_setup_failed); 1235 put_container(b, wdev->config, "config"); 1236 1237 i = blobmsg_open_array(b, "interfaces"); 1238 vlist_for_each_element(&wdev->interfaces, iface, node) 1239 wireless_interface_status(iface, b); 1240 blobmsg_close_array(b, i); 1241 blobmsg_close_table(b, c); 1242 } 1243 1244 /* ubus callback network.wireless.get_validate */ 1245 void 1246 wireless_device_get_validate(struct wireless_device *wdev, struct blob_buf *b) 1247 { 1248 struct uci_blob_param_list *p; 1249 void *c, *d; 1250 int i; 1251 1252 c = blobmsg_open_table(b, wdev->name); 1253 1254 d = blobmsg_open_table(b, "device"); 1255 p = wdev->drv->device.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 d = blobmsg_open_table(b, "interface"); 1261 p = wdev->drv->interface.config; 1262 for (i = 0; i < p->n_params; i++) 1263 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i)); 1264 blobmsg_close_table(b, d); 1265 1266 blobmsg_close_table(b, c); 1267 } 1268 1269 /* ubus callback network.wireless.notify, command = set data, for vif */ 1270 static void 1271 wireless_interface_set_data(struct wireless_interface *vif) 1272 { 1273 enum { 1274 VIF_DATA_IFNAME, 1275 __VIF_DATA_MAX, 1276 }; 1277 static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = { 1278 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING }, 1279 }; 1280 struct blob_attr *tb[__VIF_DATA_MAX]; 1281 struct blob_attr *cur; 1282 1283 blobmsg_parse(data_policy, __VIF_DATA_MAX, tb, 1284 blobmsg_data(vif->data), blobmsg_data_len(vif->data)); 1285 1286 if ((cur = tb[VIF_DATA_IFNAME])) 1287 vif->ifname = blobmsg_data(cur); 1288 } 1289 1290 /* ubus callback network.wireless.notify, command = set data, for vlan */ 1291 static void 1292 wireless_vlan_set_data(struct wireless_vlan *vlan) 1293 { 1294 enum { 1295 VLAN_DATA_IFNAME, 1296 __VLAN_DATA_MAX, 1297 }; 1298 static const struct blobmsg_policy data_policy[__VLAN_DATA_MAX] = { 1299 [VLAN_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING }, 1300 }; 1301 struct blob_attr *tb[__VLAN_DATA_MAX]; 1302 struct blob_attr *cur; 1303 1304 blobmsg_parse(data_policy, __VLAN_DATA_MAX, tb, 1305 blobmsg_data(vlan->data), blobmsg_data_len(vlan->data)); 1306 1307 if ((cur = tb[VLAN_DATA_IFNAME])) 1308 vlan->ifname = blobmsg_data(cur); 1309 } 1310 1311 /* ubus callback network.wireless.notify, command = process add */ 1312 static int 1313 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data) 1314 { 1315 enum { 1316 PROC_ATTR_PID, 1317 PROC_ATTR_EXE, 1318 PROC_ATTR_REQUIRED, 1319 PROC_ATTR_KEEP, 1320 __PROC_ATTR_MAX 1321 }; 1322 static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = { 1323 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 }, 1324 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING }, 1325 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL }, 1326 [PROC_ATTR_KEEP] = { .name = "keep", .type = BLOBMSG_TYPE_BOOL }, 1327 }; 1328 struct blob_attr *tb[__PROC_ATTR_MAX]; 1329 struct wireless_process *proc; 1330 char *name; 1331 int pid; 1332 1333 if (!data) 1334 return UBUS_STATUS_INVALID_ARGUMENT; 1335 1336 blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data)); 1337 if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE]) 1338 return UBUS_STATUS_INVALID_ARGUMENT; 1339 1340 pid = blobmsg_get_u32(tb[PROC_ATTR_PID]); 1341 if (pid < 2) 1342 return UBUS_STATUS_INVALID_ARGUMENT; 1343 1344 proc = calloc_a(sizeof(*proc), 1345 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1); 1346 1347 proc->pid = pid; 1348 proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE])); 1349 1350 if (tb[PROC_ATTR_REQUIRED]) 1351 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]); 1352 1353 if (tb[PROC_ATTR_KEEP]) 1354 proc->keep = blobmsg_get_bool(tb[PROC_ATTR_KEEP]); 1355 1356 D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid); 1357 list_add(&proc->list, &wdev->script_proc); 1358 uloop_timeout_set(&wdev->script_check, 0); 1359 1360 return 0; 1361 } 1362 1363 /* ubus callback network.wireless.notify, command = process kill all */ 1364 static int 1365 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data, 1366 struct ubus_request_data *req) 1367 { 1368 enum { 1369 KILL_ATTR_SIGNAL, 1370 KILL_ATTR_IMMEDIATE, 1371 __KILL_ATTR_MAX 1372 }; 1373 static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = { 1374 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 }, 1375 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL }, 1376 }; 1377 struct blob_attr *tb[__KILL_ATTR_MAX]; 1378 struct blob_attr *cur; 1379 bool immediate = false; 1380 int signal = SIGTERM; 1381 1382 blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data)); 1383 1384 if ((cur = tb[KILL_ATTR_SIGNAL])) 1385 signal = blobmsg_get_u32(cur); 1386 1387 if ((cur = tb[KILL_ATTR_IMMEDIATE])) 1388 immediate = blobmsg_get_bool(cur); 1389 1390 if (wdev->state != IFS_TEARDOWN || wdev->kill_request) 1391 return UBUS_STATUS_PERMISSION_DENIED; 1392 1393 wireless_process_kill_all(wdev, signal, immediate); 1394 1395 if (list_empty(&wdev->script_proc)) 1396 return 0; 1397 1398 wdev->kill_request = calloc(1, sizeof(*wdev->kill_request)); 1399 ubus_defer_request(ubus_ctx, req, wdev->kill_request); 1400 1401 return 0; 1402 } 1403 1404 /* ubus callback network.wireless.notify, command = set_retry */ 1405 static int 1406 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data) 1407 { 1408 static const struct blobmsg_policy retry_policy = { 1409 .name = "retry", .type = BLOBMSG_TYPE_INT32 1410 }; 1411 struct blob_attr *val; 1412 1413 blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data)); 1414 if (!val) 1415 return UBUS_STATUS_INVALID_ARGUMENT; 1416 1417 wdev->retry = blobmsg_get_u32(val); 1418 netifd_log_message(L_NOTICE, "Wireless device '%s' set retry=%d\n", wdev->name, wdev->retry); 1419 return 0; 1420 } 1421 1422 enum { 1423 NOTIFY_CMD_UP = 0, 1424 NOTIFY_CMD_SET_DATA = 1, 1425 NOTIFY_CMD_PROCESS_ADD = 2, 1426 NOTIFY_CMD_PROCESS_KILL_ALL = 3, 1427 NOTIFY_CMD_SET_RETRY = 4, 1428 }; 1429 1430 /* ubus callback network.wireless.notify */ 1431 int 1432 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data, 1433 struct ubus_request_data *req) 1434 { 1435 enum { 1436 NOTIFY_ATTR_COMMAND, 1437 NOTIFY_ATTR_VIF, 1438 NOTIFY_ATTR_VLAN, 1439 NOTIFY_ATTR_DATA, 1440 __NOTIFY_MAX, 1441 }; 1442 static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = { 1443 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 }, 1444 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING }, 1445 [NOTIFY_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_STRING }, 1446 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE }, 1447 }; 1448 struct wireless_interface *vif = NULL; 1449 struct wireless_vlan *vlan = NULL; 1450 struct blob_attr *tb[__NOTIFY_MAX]; 1451 struct blob_attr *cur, **pdata; 1452 1453 blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data)); 1454 1455 if (!tb[NOTIFY_ATTR_COMMAND]) 1456 return UBUS_STATUS_INVALID_ARGUMENT; 1457 1458 if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) { 1459 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node); 1460 if (!vif) 1461 return UBUS_STATUS_NOT_FOUND; 1462 } 1463 1464 if ((cur = tb[NOTIFY_ATTR_VLAN]) != NULL) { 1465 vlan = vlist_find(&wdev->vlans, blobmsg_data(cur), vlan, node); 1466 if (!vlan) 1467 return UBUS_STATUS_NOT_FOUND; 1468 } 1469 1470 cur = tb[NOTIFY_ATTR_DATA]; 1471 if (!cur) 1472 return UBUS_STATUS_INVALID_ARGUMENT; 1473 1474 switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) { 1475 case NOTIFY_CMD_UP: 1476 if (vif || vlan) 1477 return UBUS_STATUS_INVALID_ARGUMENT; 1478 1479 if (wdev->state != IFS_SETUP) 1480 return UBUS_STATUS_PERMISSION_DENIED; 1481 1482 wireless_device_mark_up(wdev); 1483 break; 1484 case NOTIFY_CMD_SET_DATA: 1485 if (vif) 1486 pdata = &vif->data; 1487 else if (vlan) 1488 pdata = &vlan->data; 1489 else 1490 pdata = &wdev->data; 1491 1492 if (*pdata) 1493 return UBUS_STATUS_INVALID_ARGUMENT; 1494 1495 *pdata = blob_memdup(cur); 1496 if (vif) 1497 wireless_interface_set_data(vif); 1498 else if (vlan) 1499 wireless_vlan_set_data(vlan); 1500 break; 1501 case NOTIFY_CMD_PROCESS_ADD: 1502 return wireless_device_add_process(wdev, cur); 1503 case NOTIFY_CMD_PROCESS_KILL_ALL: 1504 return wireless_device_process_kill_all(wdev, cur, req); 1505 case NOTIFY_CMD_SET_RETRY: 1506 return wireless_device_set_retry(wdev, cur); 1507 default: 1508 return UBUS_STATUS_INVALID_ARGUMENT; 1509 } 1510 1511 return 0; 1512 } 1513 1514 /* called on startup and by netifd reload() */ 1515 void 1516 wireless_start_pending(void) 1517 { 1518 struct wireless_device *wdev; 1519 1520 vlist_for_each_element(&wireless_devices, wdev, node) 1521 __wireless_device_set_up(wdev, 0); 1522 } 1523 1524 void wireless_device_hotplug_event(const char *name, bool add) 1525 { 1526 struct wireless_interface *vif; 1527 struct wireless_device *wdev; 1528 const char *s; 1529 int len; 1530 1531 s = strstr(name, ".sta"); 1532 if (s) { 1533 if (strchr(s + 4, '.')) 1534 return; 1535 1536 len = s - name; 1537 } else if (!device_find(name)) { 1538 len = strlen(name); 1539 } else { 1540 return; 1541 } 1542 1543 vlist_for_each_element(&wireless_devices, wdev, node) { 1544 vlist_for_each_element(&wdev->interfaces, vif, node) { 1545 if (!vif->ifname) 1546 continue; 1547 1548 if (strlen(vif->ifname) != len || 1549 strncmp(vif->ifname, name, len) != 0) 1550 continue; 1551 1552 wireless_interface_handle_link(vif, name, add); 1553 } 1554 } 1555 } 1556
This page was automatically generated by LXR 0.3.1. • OpenWrt