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