wireless.c

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #include <signal.h>
  15 #include "netifd.h"
  16 #include "wireless.h"
  17 #include "handler.h"
  18 #include "ubus.h"
  19
  20 #define WIRELESS_SETUP_RETRY    3
  21
  22 struct vlist_tree wireless_devices;
  23 struct avl_tree wireless_drivers;
  24 static struct blob_buf b;
  25 static int drv_fd;
  26
  27 static const struct blobmsg_policy wdev_policy =
  28         { .name = "disabled", .type = BLOBMSG_TYPE_BOOL };
  29
  30 static const struct uci_blob_param_list wdev_param = {
  31         .n_params = 1,
  32         .params = &wdev_policy,
  33 };
  34
  35 enum {
  36         VIF_ATTR_DISABLED,
  37         VIF_ATTR_NETWORK,
  38         __VIF_ATTR_MAX,
  39 };
  40
  41 static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
  42         [VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  43         [VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
  44 };
  45
  46 static const struct uci_blob_param_list vif_param = {
  47         .n_params = ARRAY_SIZE(vif_policy),
  48         .params = vif_policy,
  49 };
  50
  51 static void
  52 put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
  53 {
  54         void *c = blobmsg_open_table(buf, name);
  55         blob_put_raw(buf, blob_data(attr), blob_len(attr));
  56         blobmsg_close_table(buf, c);
  57 }
  58
  59 static void
  60 vif_config_add_bridge(struct blob_buf *buf, struct blob_attr *networks, bool prepare)
  61 {
  62         struct interface *iface;
  63         struct device *dev = NULL;
  64         struct blob_attr *cur;
  65         const char *network;
  66         int rem;
  67
  68         if (!networks)
  69                 return;
  70
  71         blobmsg_for_each_attr(cur, networks, rem) {
  72                 network = blobmsg_data(cur);
  73
  74                 iface = vlist_find(&interfaces, network, iface, node);
  75                 if (!iface)
  76                         continue;
  77
  78                 dev = iface->main_dev.dev;
  79                 if (!dev)
  80                         return;
  81
  82                 if (dev->type != &bridge_device_type)
  83                         return;
  84         }
  85
  86         if (!dev)
  87                 return;
  88
  89         if (dev->hotplug_ops && dev->hotplug_ops->prepare)
  90                 dev->hotplug_ops->prepare(dev);
  91
  92         blobmsg_add_string(buf, "bridge", dev->ifname);
  93 }
  94
  95 static void
  96 prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
  97 {
  98         struct wireless_interface *vif;
  99         void *l, *i;
 100
 101         blob_buf_init(&b, 0);
 102         put_container(&b, wdev->config, "config");
 103         if (wdev->data)
 104                 blobmsg_add_blob(&b, wdev->data);
 105
 106         l = blobmsg_open_table(&b, "interfaces");
 107         vlist_for_each_element(&wdev->interfaces, vif, node) {
 108                 i = blobmsg_open_table(&b, vif->name);
 109                 vif_config_add_bridge(&b, vif->network, up);
 110                 put_container(&b, vif->config, "config");
 111                 if (vif->data)
 112                         blobmsg_add_blob(&b, vif->data);
 113                 blobmsg_close_table(&b, i);
 114         }
 115         blobmsg_close_table(&b, l);
 116 }
 117
 118 static bool
 119 wireless_process_check(struct wireless_process *proc)
 120 {
 121         return check_pid_path(proc->pid, proc->exe);
 122 }
 123
 124 static void
 125 wireless_complete_kill_request(struct wireless_device *wdev)
 126 {
 127         if (!wdev->kill_request)
 128                 return;
 129
 130         ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
 131         free(wdev->kill_request);
 132         wdev->kill_request = NULL;
 133 }
 134
 135 static void
 136 wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
 137 {
 138         D(WIRELESS, "Wireless device '%s' free pid %d\n", wdev->name, proc->pid);
 139         list_del(&proc->list);
 140         free(proc);
 141
 142         if (list_empty(&wdev->script_proc))
 143                 wireless_complete_kill_request(wdev);
 144 }
 145
 146 static void
 147 wireless_close_script_proc_fd(struct wireless_device *wdev)
 148 {
 149         if (wdev->script_proc_fd.fd < 0)
 150                 return;
 151
 152         uloop_fd_delete(&wdev->script_proc_fd);
 153         close(wdev->script_proc_fd.fd);
 154         wdev->script_proc_fd.fd = -1;
 155 }
 156
 157 static void
 158 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
 159 {
 160         struct wireless_process *proc, *tmp;
 161
 162         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
 163                 bool check = wireless_process_check(proc);
 164
 165                 if (check) {
 166                         D(WIRELESS, "Wireless device '%s' kill pid %d\n", wdev->name, proc->pid);
 167                         kill(proc->pid, signal);
 168                 }
 169
 170                 if (free || !check)
 171                         wireless_process_free(wdev, proc);
 172         }
 173
 174         if (free)
 175                 wireless_close_script_proc_fd(wdev);
 176 }
 177
 178 static void
 179 wireless_device_free_state(struct wireless_device *wdev)
 180 {
 181         struct wireless_interface *vif;
 182
 183         uloop_timeout_cancel(&wdev->script_check);
 184         uloop_timeout_cancel(&wdev->timeout);
 185         wireless_complete_kill_request(wdev);
 186         free(wdev->data);
 187         wdev->data = NULL;
 188         vlist_for_each_element(&wdev->interfaces, vif, node) {
 189                 free(vif->data);
 190                 vif->data = NULL;
 191                 vif->ifname = NULL;
 192         }
 193 }
 194
 195 static void wireless_interface_handle_link(struct wireless_interface *vif, bool up)
 196 {
 197         struct interface *iface;
 198         struct blob_attr *cur;
 199         const char *network;
 200         int rem;
 201
 202         if (!vif->network || !vif->ifname)
 203                 return;
 204
 205         if (up) {
 206                 struct device *dev = device_get(vif->ifname, 2);
 207                 if (dev)
 208                         dev->wireless = true;
 209         }
 210
 211         blobmsg_for_each_attr(cur, vif->network, rem) {
 212                 network = blobmsg_data(cur);
 213
 214                 iface = vlist_find(&interfaces, network, iface, node);
 215                 if (!iface)
 216                         continue;
 217
 218                 interface_handle_link(iface, vif->ifname, up, true);
 219         }
 220 }
 221
 222 static void
 223 wireless_device_setup_cancel(struct wireless_device *wdev)
 224 {
 225         if (wdev->cancel)
 226                 return;
 227
 228         D(WIRELESS, "Cancel wireless device '%s' setup\n", wdev->name);
 229         wdev->cancel = true;
 230         uloop_timeout_set(&wdev->timeout, 10 * 1000);
 231 }
 232
 233 static void
 234 wireless_device_run_handler(struct wireless_device *wdev, bool up)
 235 {
 236         const char *action = up ? "setup" : "teardown";
 237         const char *argv[6];
 238         char *config;
 239         int i = 0;
 240         int fds[2] = { -1, -1 };
 241
 242         D(WIRELESS, "Wireless device '%s' run %s handler\n", wdev->name, action);
 243         if (!up && wdev->prev_config) {
 244                 config = blobmsg_format_json(wdev->prev_config, true);
 245                 free(wdev->prev_config);
 246                 wdev->prev_config = NULL;
 247         } else {
 248                 prepare_config(wdev, &b, up);
 249                 config = blobmsg_format_json(b.head, true);
 250         }
 251
 252         argv[i++] = wdev->drv->script;
 253         argv[i++] = wdev->drv->name;
 254         argv[i++] = action;
 255         argv[i++] = wdev->name;
 256         argv[i++] = config;
 257         argv[i] = NULL;
 258
 259         if (up && pipe(fds) == 0) {
 260                 wdev->script_proc_fd.fd = fds[0];
 261                 uloop_fd_add(&wdev->script_proc_fd,
 262                              ULOOP_READ | ULOOP_EDGE_TRIGGER);
 263         }
 264
 265         netifd_start_process(argv, NULL, &wdev->script_task);
 266
 267         if (fds[1] >= 0)
 268                 close(fds[1]);
 269
 270         free(config);
 271 }
 272
 273 static void
 274 __wireless_device_set_up(struct wireless_device *wdev)
 275 {
 276         if (wdev->disabled)
 277                 return;
 278
 279         if (wdev->state != IFS_DOWN || config_init)
 280                 return;
 281
 282         free(wdev->prev_config);
 283         wdev->prev_config = NULL;
 284         wdev->state = IFS_SETUP;
 285         wireless_device_run_handler(wdev, true);
 286 }
 287
 288 static void
 289 wireless_device_free(struct wireless_device *wdev)
 290 {
 291         vlist_flush_all(&wdev->interfaces);
 292         avl_delete(&wireless_devices.avl, &wdev->node.avl);
 293         free(wdev->config);
 294         free(wdev->prev_config);
 295         free(wdev);
 296 }
 297
 298 static void
 299 wdev_handle_config_change(struct wireless_device *wdev)
 300 {
 301         enum interface_config_state state = wdev->config_state;
 302
 303         switch(state) {
 304         case IFC_NORMAL:
 305         case IFC_RELOAD:
 306                 wdev->config_state = IFC_NORMAL;
 307                 if (wdev->autostart)
 308                         __wireless_device_set_up(wdev);
 309                 break;
 310         case IFC_REMOVE:
 311                 wireless_device_free(wdev);
 312                 break;
 313         }
 314 }
 315
 316 static void
 317 wireless_device_mark_down(struct wireless_device *wdev)
 318 {
 319         struct wireless_interface *vif;
 320
 321         D(WIRELESS, "Wireless device '%s' is now down\n", wdev->name);
 322
 323         vlist_for_each_element(&wdev->interfaces, vif, node)
 324                 wireless_interface_handle_link(vif, false);
 325
 326         wireless_process_kill_all(wdev, SIGTERM, true);
 327
 328         wdev->cancel = false;
 329         wdev->state = IFS_DOWN;
 330         wireless_device_free_state(wdev);
 331         wdev_handle_config_change(wdev);
 332 }
 333
 334 static void
 335 wireless_device_setup_timeout(struct uloop_timeout *timeout)
 336 {
 337         struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
 338
 339         netifd_kill_process(&wdev->script_task);
 340         wdev->script_task.cb(&wdev->script_task, -1);
 341         wireless_device_mark_down(wdev);
 342 }
 343
 344 void
 345 wireless_device_set_up(struct wireless_device *wdev)
 346 {
 347         wdev->retry = WIRELESS_SETUP_RETRY;
 348         wdev->autostart = true;
 349         __wireless_device_set_up(wdev);
 350 }
 351
 352 static void
 353 __wireless_device_set_down(struct wireless_device *wdev)
 354 {
 355         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
 356                 return;
 357
 358         if (wdev->script_task.uloop.pending) {
 359                 wireless_device_setup_cancel(wdev);
 360                 return;
 361         }
 362
 363         wdev->state = IFS_TEARDOWN;
 364         wireless_device_run_handler(wdev, false);
 365 }
 366
 367 static void
 368 wireless_device_mark_up(struct wireless_device *wdev)
 369 {
 370         struct wireless_interface *vif;
 371
 372         if (wdev->cancel) {
 373                 wdev->cancel = false;
 374                 __wireless_device_set_down(wdev);
 375                 return;
 376         }
 377
 378         D(WIRELESS, "Wireless device '%s' is now up\n", wdev->name);
 379         wdev->state = IFS_UP;
 380         vlist_for_each_element(&wdev->interfaces, vif, node)
 381                 wireless_interface_handle_link(vif, true);
 382 }
 383
 384 static void
 385 wireless_device_retry_setup(struct wireless_device *wdev)
 386 {
 387         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
 388                 return;
 389
 390         if (--wdev->retry < 0)
 391                 wdev->autostart = false;
 392
 393         __wireless_device_set_down(wdev);
 394 }
 395
 396 static void
 397 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
 398 {
 399         struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
 400
 401         switch (wdev->state) {
 402         case IFS_SETUP:
 403                 wireless_device_retry_setup(wdev);
 404                 break;
 405         case IFS_TEARDOWN:
 406                 wireless_device_mark_down(wdev);
 407                 break;
 408         default:
 409                 break;
 410         }
 411 }
 412
 413 void
 414 wireless_device_set_down(struct wireless_device *wdev)
 415 {
 416         wdev->autostart = false;
 417         __wireless_device_set_down(wdev);
 418 }
 419
 420 static void
 421 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
 422 {
 423         if (wdev->config_state != IFC_NORMAL)
 424                 return;
 425
 426         wdev->config_state = s;
 427         if (wdev->state == IFS_DOWN)
 428                 wdev_handle_config_change(wdev);
 429         else
 430                 __wireless_device_set_down(wdev);
 431 }
 432
 433 static void
 434 wdev_prepare_prev_config(struct wireless_device *wdev)
 435 {
 436         if (wdev->prev_config)
 437                 return;
 438
 439         prepare_config(wdev, &b, false);
 440         wdev->prev_config = blob_memdup(b.head);
 441 }
 442
 443 static void
 444 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
 445 {
 446         struct blob_attr *new_config = wd_new->config;
 447         bool disabled = wd_new->disabled;
 448
 449         free(wd_new);
 450
 451         wdev_prepare_prev_config(wdev);
 452         if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled)
 453                 return;
 454
 455         D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
 456         free(wdev->config);
 457         wdev->config = blob_memdup(new_config);
 458         wdev->disabled = disabled;
 459         wdev_set_config_state(wdev, IFC_RELOAD);
 460 }
 461
 462 static void
 463 wdev_create(struct wireless_device *wdev)
 464 {
 465         wdev->retry = WIRELESS_SETUP_RETRY;
 466         wdev->config = blob_memdup(wdev->config);
 467 }
 468
 469 static void
 470 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
 471             struct vlist_node *node_old)
 472 {
 473         struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
 474         struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
 475
 476         if (wd_old && wd_new) {
 477                 wdev_change_config(wd_old, wd_new);
 478         } else if (wd_old) {
 479                 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
 480                 wdev_set_config_state(wd_old, IFC_REMOVE);
 481         } else if (wd_new) {
 482                 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
 483                 wdev_create(wd_new);
 484         }
 485 }
 486
 487 static void
 488 wireless_add_handler(const char *script, const char *name, json_object *obj)
 489 {
 490         struct wireless_driver *drv;
 491         char *name_str, *script_str;
 492         json_object *dev_config_obj, *iface_config_obj;
 493         struct uci_blob_param_list *dev_config, *iface_config;
 494
 495         dev_config_obj = json_get_field(obj, "device", json_type_array);
 496         iface_config_obj = json_get_field(obj, "iface", json_type_array);
 497
 498         if (!dev_config_obj || !iface_config_obj)
 499                 return;
 500
 501         drv = calloc_a(sizeof(*drv),
 502                 &dev_config, sizeof(*dev_config) + sizeof(void *),
 503                 &iface_config, sizeof(*iface_config) + sizeof(void *),
 504                 &name_str, strlen(name) + 1,
 505                 &script_str, strlen(script) + 1);
 506
 507         drv->name = strcpy(name_str, name);
 508         drv->script = strcpy(script_str, script);
 509
 510         dev_config->n_next = 1;
 511         dev_config->next[0] = &wdev_param;
 512         drv->device.config = dev_config;
 513
 514         iface_config->n_next = 1;
 515         iface_config->next[0] = &vif_param;
 516         drv->interface.config = iface_config;
 517
 518         drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
 519         drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
 520
 521         drv->node.key = drv->name;
 522         avl_insert(&wireless_drivers, &drv->node);
 523         D(WIRELESS, "Add handler for script %s: %s\n", script, name);
 524 }
 525
 526 void wireless_init(void)
 527 {
 528         vlist_init(&wireless_devices, avl_strcmp, wdev_update);
 529         wireless_devices.keep_old = true;
 530         wireless_devices.no_delete = true;
 531
 532         avl_init(&wireless_drivers, avl_strcmp, false, NULL);
 533         drv_fd = netifd_open_subdir("wireless");
 534         if (drv_fd < 0)
 535                 return;
 536
 537         netifd_init_script_handlers(drv_fd, wireless_add_handler);
 538 }
 539
 540 static void
 541 wireless_interface_init_config(struct wireless_interface *vif)
 542 {
 543         struct blob_attr *tb[__VIF_ATTR_MAX];
 544         struct blob_attr *cur;
 545
 546         vif->network = NULL;
 547         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
 548
 549         if ((cur = tb[VIF_ATTR_NETWORK]))
 550                 vif->network = cur;
 551 }
 552
 553 static void
 554 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
 555            struct vlist_node *node_old)
 556 {
 557         struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
 558         struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
 559         struct wireless_device *wdev;
 560
 561         if (vif_old)
 562                 wdev = vif_old->wdev;
 563         else
 564                 wdev = vif_new->wdev;
 565
 566         if (vif_old && vif_new) {
 567                 free((void *) vif_old->section);
 568                 vif_old->section = strdup(vif_new->section);
 569                 if (blob_attr_equal(vif_old->config, vif_new->config)) {
 570                         free(vif_new);
 571                         return;
 572                 }
 573
 574                 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
 575                 free(vif_old->config);
 576                 vif_old->config = blob_memdup(vif_new->config);
 577                 wireless_interface_init_config(vif_old);
 578                 free(vif_new);
 579         } else if (vif_new) {
 580                 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
 581                 vif_new->section = strdup(vif_new->section);
 582                 vif_new->config = blob_memdup(vif_new->config);
 583                 wireless_interface_init_config(vif_new);
 584         } else if (vif_old) {
 585                 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
 586                 free((void *) vif_old->section);
 587                 free(vif_old->config);
 588                 free(vif_old);
 589         }
 590
 591         wdev_set_config_state(wdev, IFC_RELOAD);
 592 }
 593
 594 static void
 595 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
 596 {
 597         struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
 598         char buf[128];
 599
 600         while (1) {
 601                 int b = read(fd->fd, buf, sizeof(buf));
 602                 if (b < 0) {
 603                         if (errno == EINTR)
 604                                 continue;
 605
 606                         if (errno == EAGAIN)
 607                                 return;
 608
 609                         goto done;
 610                 }
 611
 612                 if (!b)
 613                         goto done;
 614         }
 615
 616 done:
 617         uloop_timeout_set(&wdev->script_check, 0);
 618         wireless_close_script_proc_fd(wdev);
 619 }
 620
 621 static void
 622 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
 623 {
 624         struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
 625         struct wireless_process *proc, *tmp;
 626         bool restart = false;
 627
 628         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
 629                 if (wireless_process_check(proc))
 630                         continue;
 631
 632                 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
 633                 if (proc->required)
 634                         restart = true;
 635
 636                 wireless_process_free(wdev, proc);
 637         }
 638
 639         if (restart)
 640                 wireless_device_retry_setup(wdev);
 641         else
 642                 uloop_timeout_set(&wdev->script_check, 1000);
 643 }
 644
 645 void
 646 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
 647 {
 648         struct wireless_device *wdev;
 649         char *name_buf;
 650         struct blob_attr *disabled;
 651
 652         blobmsg_parse(&wdev_policy, 1, &disabled, blob_data(data), blob_len(data));
 653
 654         wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
 655         if (disabled && blobmsg_get_bool(disabled))
 656                 wdev->disabled = true;
 657         wdev->drv = drv;
 658         wdev->state = IFS_DOWN;
 659         wdev->config_state = IFC_NORMAL;
 660         wdev->name = strcpy(name_buf, name);
 661         wdev->config = data;
 662         wdev->config_autostart = true;
 663         wdev->autostart = wdev->config_autostart;
 664         INIT_LIST_HEAD(&wdev->script_proc);
 665         vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
 666         wdev->interfaces.keep_old = true;
 667
 668         wdev->timeout.cb = wireless_device_setup_timeout;
 669         wdev->script_task.cb = wireless_device_script_task_cb;
 670         wdev->script_task.dir_fd = drv_fd;
 671         wdev->script_task.log_prefix = wdev->name;
 672
 673         wdev->script_proc_fd.fd = -1;
 674         wdev->script_proc_fd.cb = wireless_proc_poll_fd;
 675
 676         wdev->script_check.cb = wireless_device_check_script_tasks;
 677
 678         vlist_add(&wireless_devices, &wdev->node, wdev->name);
 679 }
 680
 681 void wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
 682 {
 683         struct wireless_interface *vif;
 684         struct blob_attr *tb[__VIF_ATTR_MAX];
 685         struct blob_attr *cur;
 686         char *name_buf;
 687         char name[8];
 688
 689         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
 690
 691         cur = tb[VIF_ATTR_DISABLED];
 692         if (cur && blobmsg_get_bool(cur))
 693                 return;
 694
 695         sprintf(name, "%d", wdev->vif_idx++);
 696
 697         vif = calloc_a(sizeof(*vif),
 698                        &name_buf, strlen(name) + 1);
 699         vif->name = strcpy(name_buf, name);
 700         vif->wdev = wdev;
 701         vif->config = data;
 702         vif->section = section;
 703         vlist_add(&wdev->interfaces, &vif->node, vif->name);
 704 }
 705
 706 static void
 707 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
 708 {
 709         void *i;
 710
 711         i = blobmsg_open_table(b, NULL);
 712         if (iface->section)
 713                 blobmsg_add_string(b, "section", iface->section);
 714         if (iface->ifname)
 715                 blobmsg_add_string(b, "ifname", iface->ifname);
 716         put_container(b, iface->config, "config");
 717         blobmsg_close_table(b, i);
 718 }
 719
 720 void
 721 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
 722 {
 723         struct wireless_interface *iface;
 724         void *c, *i;
 725
 726         c = blobmsg_open_table(b, wdev->name);
 727         blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
 728         blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
 729         blobmsg_add_u8(b, "autostart", wdev->autostart);
 730         blobmsg_add_u8(b, "disabled", wdev->disabled);
 731         put_container(b, wdev->config, "config");
 732
 733         i = blobmsg_open_array(b, "interfaces");
 734         vlist_for_each_element(&wdev->interfaces, iface, node)
 735                 wireless_interface_status(iface, b);
 736         blobmsg_close_array(b, i);
 737         blobmsg_close_table(b, c);
 738 }
 739
 740 void
 741 wireless_device_get_validate(struct wireless_device *wdev, struct blob_buf *b)
 742 {
 743         struct uci_blob_param_list *p;
 744         void *c, *d;
 745         int i;
 746
 747         c = blobmsg_open_table(b, wdev->name);
 748
 749         d = blobmsg_open_table(b, "device");
 750         p = wdev->drv->device.config;
 751         for (i = 0; i < p->n_params; i++)
 752                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
 753         blobmsg_close_table(b, d);
 754
 755         d = blobmsg_open_table(b, "interface");
 756         p = wdev->drv->interface.config;
 757         for (i = 0; i < p->n_params; i++)
 758                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
 759         blobmsg_close_table(b, d);
 760
 761         blobmsg_close_table(b, c);
 762 }
 763
 764 static void
 765 wireless_interface_set_data(struct wireless_interface *vif)
 766 {
 767         enum {
 768                 VIF_DATA_IFNAME,
 769                 __VIF_DATA_MAX,
 770         };
 771         static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
 772                 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
 773         };
 774         struct blob_attr *tb[__VIF_DATA_MAX];
 775         struct blob_attr *cur;
 776
 777         blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
 778                       blobmsg_data(vif->data), blobmsg_data_len(vif->data));
 779
 780         if ((cur = tb[VIF_DATA_IFNAME]))
 781                 vif->ifname = blobmsg_data(cur);
 782 }
 783
 784 static int
 785 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
 786 {
 787         enum {
 788                 PROC_ATTR_PID,
 789                 PROC_ATTR_EXE,
 790                 PROC_ATTR_REQUIRED,
 791                 __PROC_ATTR_MAX
 792         };
 793         static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
 794                 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
 795                 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
 796                 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
 797         };
 798         struct blob_attr *tb[__PROC_ATTR_MAX];
 799         struct wireless_process *proc;
 800         char *name;
 801         int pid;
 802
 803         if (!data)
 804                 return UBUS_STATUS_INVALID_ARGUMENT;
 805
 806         blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
 807         if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
 808                 return UBUS_STATUS_INVALID_ARGUMENT;
 809
 810         pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
 811         if (pid < 2)
 812                 return UBUS_STATUS_INVALID_ARGUMENT;
 813
 814         proc = calloc_a(sizeof(*proc),
 815                 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
 816
 817         proc->pid = pid;
 818         proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
 819
 820         if (tb[PROC_ATTR_REQUIRED])
 821                 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
 822
 823         D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
 824         list_add(&proc->list, &wdev->script_proc);
 825         uloop_timeout_set(&wdev->script_check, 0);
 826
 827         return 0;
 828 }
 829
 830 static int
 831 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
 832                                  struct ubus_request_data *req)
 833 {
 834         enum {
 835                 KILL_ATTR_SIGNAL,
 836                 KILL_ATTR_IMMEDIATE,
 837                 __KILL_ATTR_MAX
 838         };
 839         static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
 840                 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
 841                 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
 842         };
 843         struct blob_attr *tb[__KILL_ATTR_MAX];
 844         struct blob_attr *cur;
 845         bool immediate = false;
 846         int signal = SIGTERM;
 847
 848         blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
 849
 850         if ((cur = tb[KILL_ATTR_SIGNAL]))
 851                 signal = blobmsg_get_u32(cur);
 852
 853         if ((cur = tb[KILL_ATTR_IMMEDIATE]))
 854                 immediate = blobmsg_get_bool(cur);
 855
 856         if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
 857                 return UBUS_STATUS_PERMISSION_DENIED;
 858
 859         wireless_process_kill_all(wdev, signal, immediate);
 860
 861         if (list_empty(&wdev->script_proc))
 862                 return 0;
 863
 864         wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
 865         ubus_defer_request(ubus_ctx, req, wdev->kill_request);
 866
 867         return 0;
 868 }
 869
 870 static int
 871 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
 872 {
 873         static const struct blobmsg_policy retry_policy = {
 874                 .name = "retry", .type = BLOBMSG_TYPE_INT32
 875         };
 876         struct blob_attr *val;
 877
 878         blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
 879         if (!val)
 880                 return UBUS_STATUS_INVALID_ARGUMENT;
 881
 882         wdev->retry = blobmsg_get_u32(val);
 883         return 0;
 884 }
 885
 886 enum {
 887         NOTIFY_CMD_UP = 0,
 888         NOTIFY_CMD_SET_DATA = 1,
 889         NOTIFY_CMD_PROCESS_ADD = 2,
 890         NOTIFY_CMD_PROCESS_KILL_ALL = 3,
 891         NOTIFY_CMD_SET_RETRY = 4,
 892 };
 893
 894 int
 895 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
 896                        struct ubus_request_data *req)
 897 {
 898         enum {
 899                 NOTIFY_ATTR_COMMAND,
 900                 NOTIFY_ATTR_VIF,
 901                 NOTIFY_ATTR_DATA,
 902                 __NOTIFY_MAX,
 903         };
 904         static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
 905                 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
 906                 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
 907                 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
 908         };
 909         struct wireless_interface *vif = NULL;
 910         struct blob_attr *tb[__NOTIFY_MAX];
 911         struct blob_attr *cur, **pdata;
 912
 913         blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
 914
 915         if (!tb[NOTIFY_ATTR_COMMAND])
 916                 return UBUS_STATUS_INVALID_ARGUMENT;
 917
 918         if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
 919                 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
 920                 if (!vif)
 921                         return UBUS_STATUS_NOT_FOUND;
 922         }
 923
 924         cur = tb[NOTIFY_ATTR_DATA];
 925         if (!cur)
 926                 return UBUS_STATUS_INVALID_ARGUMENT;
 927
 928         switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
 929         case NOTIFY_CMD_UP:
 930                 if (vif)
 931                         return UBUS_STATUS_INVALID_ARGUMENT;
 932
 933                 if (wdev->state != IFS_SETUP)
 934                         return UBUS_STATUS_PERMISSION_DENIED;
 935
 936                 wireless_device_mark_up(wdev);
 937                 break;
 938         case NOTIFY_CMD_SET_DATA:
 939                 if (vif)
 940                         pdata = &vif->data;
 941                 else
 942                         pdata = &wdev->data;
 943
 944                 if (*pdata)
 945                         return UBUS_STATUS_INVALID_ARGUMENT;
 946
 947                 *pdata = blob_memdup(cur);
 948                 if (vif)
 949                         wireless_interface_set_data(vif);
 950                 break;
 951         case NOTIFY_CMD_PROCESS_ADD:
 952                 return wireless_device_add_process(wdev, cur);
 953         case NOTIFY_CMD_PROCESS_KILL_ALL:
 954                 return wireless_device_process_kill_all(wdev, cur, req);
 955         case NOTIFY_CMD_SET_RETRY:
 956                 return wireless_device_set_retry(wdev, cur);
 957         default:
 958                 return UBUS_STATUS_INVALID_ARGUMENT;
 959         }
 960
 961         return 0;
 962 }
 963
 964 void
 965 wireless_start_pending(void)
 966 {
 967         struct wireless_device *wdev;
 968
 969         vlist_for_each_element(&wireless_devices, wdev, node)
 970                 if (wdev->autostart)
 971                         __wireless_device_set_up(wdev);
 972 }