1 /* 2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org> 3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU Lesser General Public License version 2.1 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 #include <sys/types.h> 16 #include <sys/stat.h> 17 #include <sys/utsname.h> 18 #include <sys/types.h> 19 #include <fcntl.h> 20 21 #include <unistd.h> 22 #include <sched.h> 23 24 #include <libubox/blobmsg_json.h> 25 #include <libubox/avl-cmp.h> 26 27 #include "../procd.h" 28 29 #include "service.h" 30 #include "instance.h" 31 32 #include "../rcS.h" 33 34 AVL_TREE(services, avl_strcmp, false, NULL); 35 AVL_TREE(containers, avl_strcmp, false, NULL); 36 static struct blob_buf b; 37 static struct ubus_context *ctx; 38 static struct ubus_object main_object; 39 40 static void 41 service_instance_add(struct service *s, struct blob_attr *attr) 42 { 43 struct service_instance *in; 44 45 if (blobmsg_type(attr) != BLOBMSG_TYPE_TABLE) 46 return; 47 48 in = calloc(1, sizeof(*in)); 49 if (!in) 50 return; 51 52 instance_init(in, s, attr); 53 vlist_add(&s->instances, &in->node, (void *) in->name); 54 } 55 56 static void 57 service_instance_update(struct vlist_tree *tree, struct vlist_node *node_new, 58 struct vlist_node *node_old) 59 { 60 struct service_instance *in_o = NULL, *in_n = NULL; 61 62 if (node_old) 63 in_o = container_of(node_old, struct service_instance, node); 64 65 if (node_new) 66 in_n = container_of(node_new, struct service_instance, node); 67 68 if (in_o && in_n) { 69 DEBUG(2, "Update instance %s::%s\n", in_o->srv->name, in_o->name); 70 instance_update(in_o, in_n); 71 instance_free(in_n); 72 } else if (in_o) { 73 DEBUG(2, "Stop instance %s::%s\n", in_o->srv->name, in_o->name); 74 instance_stop(in_o, true); 75 } else if (in_n && in_n->srv->autostart) { 76 DEBUG(2, "Start instance %s::%s\n", in_n->srv->name, in_n->name); 77 instance_start(in_n); 78 } 79 blob_buf_init(&b, 0); 80 trigger_event("instance.update", b.head); 81 } 82 83 static struct service * 84 service_alloc(const char *name) 85 { 86 struct service *s; 87 char *new_name; 88 89 s = calloc_a(sizeof(*s), &new_name, strlen(name) + 1); 90 strcpy(new_name, name); 91 92 vlist_init(&s->instances, avl_strcmp, service_instance_update); 93 s->instances.no_delete = true; 94 s->name = new_name; 95 s->avl.key = s->name; 96 INIT_LIST_HEAD(&s->validators); 97 blobmsg_list_simple_init(&s->data_blob); 98 99 return s; 100 } 101 102 enum { 103 SERVICE_SET_NAME, 104 SERVICE_SET_SCRIPT, 105 SERVICE_SET_INSTANCES, 106 SERVICE_SET_TRIGGER, 107 SERVICE_SET_VALIDATE, 108 SERVICE_SET_AUTOSTART, 109 SERVICE_SET_DATA, 110 __SERVICE_SET_MAX 111 }; 112 113 static const struct blobmsg_policy service_set_attrs[__SERVICE_SET_MAX] = { 114 [SERVICE_SET_NAME] = { "name", BLOBMSG_TYPE_STRING }, 115 [SERVICE_SET_SCRIPT] = { "script", BLOBMSG_TYPE_STRING }, 116 [SERVICE_SET_INSTANCES] = { "instances", BLOBMSG_TYPE_TABLE }, 117 [SERVICE_SET_TRIGGER] = { "triggers", BLOBMSG_TYPE_ARRAY }, 118 [SERVICE_SET_VALIDATE] = { "validate", BLOBMSG_TYPE_ARRAY }, 119 [SERVICE_SET_AUTOSTART] = { "autostart", BLOBMSG_TYPE_BOOL }, 120 [SERVICE_SET_DATA] = { "data", BLOBMSG_TYPE_TABLE }, 121 }; 122 123 static int 124 service_update(struct service *s, struct blob_attr **tb, bool add) 125 { 126 struct blob_attr *cur; 127 int rem; 128 129 if (s->trigger) { 130 trigger_del(s); 131 free(s->trigger); 132 s->trigger = NULL; 133 } 134 135 if (s->data) { 136 blobmsg_list_free(&s->data_blob); 137 free(s->data); 138 s->data = NULL; 139 } 140 141 service_validate_del(s); 142 143 if (tb[SERVICE_SET_AUTOSTART] && !blobmsg_get_bool(tb[SERVICE_SET_AUTOSTART])) 144 s->autostart = false; 145 else 146 s->autostart = true; 147 148 if (tb[SERVICE_SET_TRIGGER] && blobmsg_data_len(tb[SERVICE_SET_TRIGGER])) { 149 s->trigger = blob_memdup(tb[SERVICE_SET_TRIGGER]); 150 if (!s->trigger) 151 return -1; 152 trigger_add(s->trigger, s); 153 } 154 155 if (tb[SERVICE_SET_VALIDATE] && blobmsg_data_len(tb[SERVICE_SET_VALIDATE])) { 156 blobmsg_for_each_attr(cur, tb[SERVICE_SET_VALIDATE], rem) 157 service_validate_add(s, cur); 158 } 159 160 if (tb[SERVICE_SET_INSTANCES]) { 161 if (!add) 162 vlist_update(&s->instances); 163 blobmsg_for_each_attr(cur, tb[SERVICE_SET_INSTANCES], rem) { 164 service_instance_add(s, cur); 165 } 166 if (!add) 167 vlist_flush(&s->instances); 168 } 169 170 if (tb[SERVICE_SET_DATA] && blobmsg_data_len(tb[SERVICE_SET_DATA])) { 171 s->data = blob_memdup(tb[SERVICE_SET_DATA]); 172 if (!s->data) 173 return -1; 174 blobmsg_list_fill(&s->data_blob, blobmsg_data(s->data), 175 blobmsg_data_len(s->data), false); 176 } 177 178 s->deleted = false; 179 180 rc(s->name, "running"); 181 182 return 0; 183 } 184 185 static void _service_stopped(struct service *s, bool container); 186 187 static void 188 service_delete(struct service *s, bool container) 189 { 190 blobmsg_list_free(&s->data_blob); 191 free(s->data); 192 vlist_flush_all(&s->instances); 193 s->deleted = true; 194 _service_stopped(s, container); 195 } 196 197 enum { 198 SERVICE_ATTR_NAME, 199 __SERVICE_ATTR_MAX, 200 }; 201 202 static const struct blobmsg_policy service_attrs[__SERVICE_ATTR_MAX] = { 203 [SERVICE_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, 204 }; 205 206 enum { 207 SERVICE_DEL_ATTR_NAME, 208 SERVICE_DEL_ATTR_INSTANCE, 209 __SERVICE_DEL_ATTR_MAX, 210 }; 211 212 static const struct blobmsg_policy service_del_attrs[__SERVICE_DEL_ATTR_MAX] = { 213 [SERVICE_DEL_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, 214 [SERVICE_DEL_ATTR_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING }, 215 }; 216 217 enum { 218 SERVICE_LIST_ATTR_NAME, 219 SERVICE_LIST_ATTR_VERBOSE, 220 __SERVICE_LIST_ATTR_MAX, 221 }; 222 223 static const struct blobmsg_policy service_list_attrs[__SERVICE_LIST_ATTR_MAX] = { 224 [SERVICE_LIST_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, 225 [SERVICE_LIST_ATTR_VERBOSE] = { "verbose", BLOBMSG_TYPE_BOOL }, 226 }; 227 228 enum { 229 SERVICE_SIGNAL_ATTR_NAME, 230 SERVICE_SIGNAL_ATTR_INSTANCE, 231 SERVICE_SIGNAL_ATTR_SIGNAL, 232 __SERVICE_SIGNAL_ATTR_MAX, 233 }; 234 235 static const struct blobmsg_policy service_signal_attrs[__SERVICE_SIGNAL_ATTR_MAX] = { 236 [SERVICE_SIGNAL_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, 237 [SERVICE_SIGNAL_ATTR_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING }, 238 [SERVICE_SIGNAL_ATTR_SIGNAL] = { "signal", BLOBMSG_TYPE_INT32 }, 239 }; 240 241 enum { 242 SERVICE_STATE_ATTR_SPAWN, 243 SERVICE_STATE_ATTR_NAME, 244 __SERVICE_STATE_ATTR_MAX, 245 }; 246 247 static const struct blobmsg_policy service_state_attrs[__SERVICE_STATE_ATTR_MAX] = { 248 [SERVICE_STATE_ATTR_SPAWN] = { "spawn", BLOBMSG_TYPE_BOOL }, 249 [SERVICE_STATE_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, 250 }; 251 252 enum { 253 EVENT_TYPE, 254 EVENT_DATA, 255 __EVENT_MAX 256 }; 257 258 static const struct blobmsg_policy event_policy[__EVENT_MAX] = { 259 [EVENT_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING }, 260 [EVENT_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE }, 261 }; 262 263 enum { 264 VALIDATE_PACKAGE, 265 VALIDATE_TYPE, 266 VALIDATE_SERVICE, 267 __VALIDATE_MAX 268 }; 269 270 static const struct blobmsg_policy validate_policy[__VALIDATE_MAX] = { 271 [VALIDATE_PACKAGE] = { .name = "package", .type = BLOBMSG_TYPE_STRING }, 272 [VALIDATE_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING }, 273 [VALIDATE_SERVICE] = { .name = "service", .type = BLOBMSG_TYPE_STRING }, 274 }; 275 276 enum { 277 DATA_NAME, 278 DATA_INSTANCE, 279 DATA_TYPE, 280 __DATA_MAX 281 }; 282 283 static const struct blobmsg_policy get_data_policy[] = { 284 [DATA_NAME] = { "name", BLOBMSG_TYPE_STRING }, 285 [DATA_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING }, 286 [DATA_TYPE] = { "type", BLOBMSG_TYPE_STRING }, 287 }; 288 289 enum { 290 CONTAINER_CONSOLE_NAME, 291 CONTAINER_CONSOLE_INSTANCE, 292 __CONTAINER_CONSOLE_MAX, 293 }; 294 295 static const struct blobmsg_policy container_console_policy[__CONTAINER_CONSOLE_MAX] = { 296 [CONTAINER_CONSOLE_NAME] = { "name", BLOBMSG_TYPE_STRING }, 297 [CONTAINER_CONSOLE_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING }, 298 }; 299 300 static inline bool is_container_obj(struct ubus_object *obj) 301 { 302 return (obj && (strcmp(obj->name, "container") == 0)); 303 } 304 305 static inline void put_namespace(struct blob_buf *b, char *name) 306 { 307 char nsfname[32]; 308 struct stat statbuf; 309 310 snprintf(nsfname, sizeof(nsfname), "/proc/self/ns/%s", name); 311 312 if (!stat(nsfname, &statbuf)) 313 blobmsg_add_string(b, NULL, name); 314 } 315 316 static void put_cgroups(struct blob_buf *b) 317 { 318 int fd, ret; 319 static char buf[512] = ""; 320 char *t, *z; 321 322 fd = open("/sys/fs/cgroup/cgroup.controllers", O_RDONLY); 323 if (fd == -1) 324 return; 325 326 ret = read(fd, &buf, sizeof(buf)); 327 close(fd); 328 329 if (ret < 2) 330 return; 331 332 t = buf; 333 while(t) { 334 z = t; 335 /* replace space with \0 and direct next entry */ 336 t = strchr(z, ' '); 337 if (t) { 338 *(t++) = '\0'; 339 } else { /* replace trailing new-line with \0 */ 340 t = strchr(z, '\n'); 341 if (!t) /* shouldn't happen, but don't segfault if it does */ 342 break; 343 344 *t = '\0'; 345 t = NULL; 346 } 347 blobmsg_add_string(b, NULL, z); 348 } 349 } 350 351 static int 352 container_handle_features(struct ubus_context *ctx, struct ubus_object *obj, 353 struct ubus_request_data *req, const char *method, 354 struct blob_attr *msg) 355 { 356 struct utsname utsbuf; 357 struct stat statbuf; 358 void *nsarray, *cgarray; 359 360 if (stat("/sbin/ujail", &statbuf)) 361 return UBUS_STATUS_NOT_SUPPORTED; 362 363 if (uname(&utsbuf) < 0) 364 return UBUS_STATUS_UNKNOWN_ERROR; 365 366 blob_buf_init(&b, 0); 367 blobmsg_add_string(&b, "machine", utsbuf.machine); 368 369 #ifdef SECCOMP_SUPPORT 370 blobmsg_add_u8(&b, "seccomp", true); 371 #else 372 blobmsg_add_u8(&b, "seccomp", false); 373 #endif 374 375 cgarray = blobmsg_open_array(&b, "cgroup"); 376 put_cgroups(&b); 377 blobmsg_close_array(&b, cgarray); 378 379 nsarray = blobmsg_open_array(&b, "namespaces"); 380 put_namespace(&b, "cgroup"); 381 put_namespace(&b, "ipc"); 382 put_namespace(&b, "mnt"); 383 put_namespace(&b, "net"); 384 put_namespace(&b, "pid"); 385 #ifdef CLONE_NEWTIME 386 put_namespace(&b, "time"); 387 #endif 388 put_namespace(&b, "user"); 389 put_namespace(&b, "uts"); 390 blobmsg_close_array(&b, nsarray); 391 ubus_send_reply(ctx, req, b.head); 392 393 return UBUS_STATUS_OK; 394 } 395 396 static int 397 service_handle_set(struct ubus_context *ctx, struct ubus_object *obj, 398 struct ubus_request_data *req, const char *method, 399 struct blob_attr *msg) 400 { 401 struct blob_attr *tb[__SERVICE_SET_MAX], *cur; 402 struct service *s = NULL; 403 const char *name; 404 bool container = is_container_obj(obj); 405 bool add = !strcmp(method, "add"); 406 int ret; 407 408 blobmsg_parse(service_set_attrs, __SERVICE_SET_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 409 cur = tb[SERVICE_SET_NAME]; 410 if (!cur) 411 return UBUS_STATUS_INVALID_ARGUMENT; 412 413 name = blobmsg_data(cur); 414 415 if (container) 416 s = avl_find_element(&containers, name, s, avl); 417 else 418 s = avl_find_element(&services, name, s, avl); 419 420 if (s) { 421 DEBUG(2, "Update service %s\n", name); 422 return service_update(s, tb, add); 423 } 424 425 DEBUG(2, "Create service %s\n", name); 426 s = service_alloc(name); 427 if (!s) 428 return UBUS_STATUS_UNKNOWN_ERROR; 429 430 ret = service_update(s, tb, add); 431 if (ret) 432 return ret; 433 434 if (container) { 435 avl_insert(&containers, &s->avl); 436 437 service_event("container.start", s->name, NULL); 438 } else { 439 avl_insert(&services, &s->avl); 440 441 service_event("service.start", s->name, NULL); 442 } 443 return 0; 444 } 445 446 static void 447 service_dump(struct service *s, bool verbose) 448 { 449 struct service_instance *in; 450 void *c, *i; 451 452 c = blobmsg_open_table(&b, s->name); 453 454 if (!s->autostart) 455 blobmsg_add_u8(&b, "autostart", false); 456 457 if (!avl_is_empty(&s->data_blob.avl)) { 458 struct blobmsg_list_node *var; 459 i = blobmsg_open_table(&b, "data"); 460 blobmsg_list_for_each(&s->data_blob, var) 461 blobmsg_add_blob(&b, var->data); 462 blobmsg_close_table(&b, i); 463 } 464 465 if (!avl_is_empty(&s->instances.avl)) { 466 i = blobmsg_open_table(&b, "instances"); 467 vlist_for_each_element(&s->instances, in, node) 468 instance_dump(&b, in, verbose); 469 blobmsg_close_table(&b, i); 470 } 471 if (verbose && s->trigger) 472 blobmsg_add_blob(&b, s->trigger); 473 if (verbose && !list_empty(&s->validators)) 474 service_validate_dump(&b, s); 475 blobmsg_close_table(&b, c); 476 } 477 478 static int 479 service_handle_list(struct ubus_context *ctx, struct ubus_object *obj, 480 struct ubus_request_data *req, const char *method, 481 struct blob_attr *msg) 482 { 483 struct blob_attr *tb[__SERVICE_LIST_ATTR_MAX]; 484 struct service *s; 485 const char *name = NULL; 486 bool verbose = false; 487 bool container = is_container_obj(obj); 488 const struct avl_tree *tree = container?&containers:&services; 489 490 blobmsg_parse(service_list_attrs, __SERVICE_LIST_ATTR_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 491 492 if (tb[SERVICE_LIST_ATTR_VERBOSE]) 493 verbose = blobmsg_get_bool(tb[SERVICE_LIST_ATTR_VERBOSE]); 494 if (tb[SERVICE_LIST_ATTR_NAME]) 495 name = blobmsg_get_string(tb[SERVICE_LIST_ATTR_NAME]); 496 497 blob_buf_init(&b, 0); 498 avl_for_each_element(tree, s, avl) { 499 if (name && strcmp(s->name, name) != 0) 500 continue; 501 502 service_dump(s, verbose); 503 } 504 505 ubus_send_reply(ctx, req, b.head); 506 507 return 0; 508 } 509 510 static int 511 service_handle_delete(struct ubus_context *ctx, struct ubus_object *obj, 512 struct ubus_request_data *req, const char *method, 513 struct blob_attr *msg) 514 { 515 struct blob_attr *tb[__SERVICE_DEL_ATTR_MAX], *cur; 516 struct service *s; 517 struct service_instance *in; 518 bool container = is_container_obj(obj); 519 520 blobmsg_parse(service_del_attrs, __SERVICE_DEL_ATTR_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 521 522 cur = tb[SERVICE_DEL_ATTR_NAME]; 523 if (!cur) 524 return UBUS_STATUS_NOT_FOUND; 525 526 if (container) 527 s = avl_find_element(&containers, blobmsg_data(cur), s, avl); 528 else 529 s = avl_find_element(&services, blobmsg_data(cur), s, avl); 530 531 if (!s) 532 return UBUS_STATUS_NOT_FOUND; 533 534 cur = tb[SERVICE_DEL_ATTR_INSTANCE]; 535 if (!cur) { 536 service_delete(s, container); 537 return 0; 538 } 539 540 in = vlist_find(&s->instances, blobmsg_data(cur), in, node); 541 if (!in) { 542 ERROR("instance %s not found\n", (char *) blobmsg_data(cur)); 543 return UBUS_STATUS_NOT_FOUND; 544 } 545 546 vlist_delete(&s->instances, &in->node); 547 548 return 0; 549 } 550 551 static int 552 service_handle_kill(struct service_instance *in, int sig) 553 { 554 if (kill(in->proc.pid, sig) == 0) 555 return 0; 556 557 switch (errno) { 558 case EINVAL: return UBUS_STATUS_INVALID_ARGUMENT; 559 case EPERM: return UBUS_STATUS_PERMISSION_DENIED; 560 case ESRCH: return UBUS_STATUS_NOT_FOUND; 561 } 562 563 return UBUS_STATUS_UNKNOWN_ERROR; 564 } 565 566 static int 567 service_handle_signal(struct ubus_context *ctx, struct ubus_object *obj, 568 struct ubus_request_data *req, const char *method, 569 struct blob_attr *msg) 570 { 571 struct blob_attr *tb[__SERVICE_SIGNAL_ATTR_MAX], *cur; 572 struct service *s; 573 struct service_instance *in; 574 bool container = is_container_obj(obj); 575 int sig = SIGHUP; 576 int rv = 0; 577 578 blobmsg_parse(service_signal_attrs, __SERVICE_SIGNAL_ATTR_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 579 580 cur = tb[SERVICE_SIGNAL_ATTR_SIGNAL]; 581 if (cur) 582 sig = blobmsg_get_u32(cur); 583 584 cur = tb[SERVICE_SIGNAL_ATTR_NAME]; 585 if (!cur) 586 return UBUS_STATUS_NOT_FOUND; 587 588 if (container) 589 s = avl_find_element(&containers, blobmsg_data(cur), s, avl); 590 else 591 s = avl_find_element(&services, blobmsg_data(cur), s, avl); 592 593 if (!s) 594 return UBUS_STATUS_NOT_FOUND; 595 596 cur = tb[SERVICE_SIGNAL_ATTR_INSTANCE]; 597 if (!cur) { 598 vlist_for_each_element(&s->instances, in, node) 599 rv = service_handle_kill(in, sig); 600 601 return rv; 602 } 603 604 in = vlist_find(&s->instances, blobmsg_data(cur), in, node); 605 if (!in) { 606 ERROR("instance %s not found\n", blobmsg_get_string(cur)); 607 return UBUS_STATUS_NOT_FOUND; 608 } 609 610 return service_handle_kill(in, sig); 611 } 612 613 static int 614 service_handle_state(struct ubus_context *ctx, struct ubus_object *obj, 615 struct ubus_request_data *req, const char *method, 616 struct blob_attr *msg) 617 { 618 struct blob_attr *tb[__SERVICE_STATE_ATTR_MAX]; 619 struct service *s; 620 struct service_instance *in; 621 bool container = is_container_obj(obj); 622 int spawn; 623 624 blobmsg_parse(service_state_attrs, __SERVICE_STATE_ATTR_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 625 626 if (!tb[SERVICE_STATE_ATTR_SPAWN]) 627 return UBUS_STATUS_INVALID_ARGUMENT; 628 629 if (!tb[SERVICE_STATE_ATTR_NAME]) 630 return UBUS_STATUS_NOT_FOUND; 631 632 if (container) 633 s = avl_find_element(&containers, blobmsg_data(tb[SERVICE_STATE_ATTR_NAME]), s, avl); 634 else 635 s = avl_find_element(&services, blobmsg_data(tb[SERVICE_STATE_ATTR_NAME]), s, avl); 636 637 if (!s) 638 return UBUS_STATUS_NOT_FOUND; 639 640 spawn = !!blobmsg_get_u8(tb[SERVICE_STATE_ATTR_SPAWN]); 641 vlist_for_each_element(&s->instances, in, node) { 642 if (!!in->proc.pending == !!spawn) 643 continue; 644 else if (!in->proc.pending) 645 instance_start(in); 646 else 647 instance_stop(in, false); 648 } 649 650 return UBUS_STATUS_OK; 651 } 652 653 static int 654 service_handle_update(struct ubus_context *ctx, struct ubus_object *obj, 655 struct ubus_request_data *req, const char *method, 656 struct blob_attr *msg) 657 { 658 struct blob_attr *tb[__SERVICE_ATTR_MAX], *cur; 659 struct service *s; 660 bool container = is_container_obj(obj); 661 662 blobmsg_parse(service_attrs, __SERVICE_ATTR_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 663 664 cur = tb[SERVICE_SET_NAME]; 665 if (!cur) 666 return UBUS_STATUS_INVALID_ARGUMENT; 667 668 if (container) 669 s = avl_find_element(&containers, blobmsg_data(cur), s, avl); 670 else 671 s = avl_find_element(&services, blobmsg_data(cur), s, avl); 672 673 if (!s) 674 return UBUS_STATUS_NOT_FOUND; 675 676 if (!strcmp(method, "update_start")) 677 vlist_update(&s->instances); 678 else 679 vlist_flush(&s->instances); 680 681 return 0; 682 } 683 684 static void ubus_event_bcast(const char *type, const char *param1, const char *val1, 685 const char *param2, const char *val2) 686 { 687 if (!ctx) 688 return; 689 690 blob_buf_init(&b, 0); 691 if (param1 && val1) 692 blobmsg_add_string(&b, param1, val1); 693 if (param2 && val2) 694 blobmsg_add_string(&b, param2, val2); 695 ubus_notify(ctx, &main_object, type, b.head, -1); 696 } 697 698 static int 699 service_handle_event(struct ubus_context *ctx, struct ubus_object *obj, 700 struct ubus_request_data *req, const char *method, 701 struct blob_attr *msg) 702 { 703 struct blob_attr *tb[__EVENT_MAX]; 704 const char *event; 705 706 if (!msg) 707 return UBUS_STATUS_INVALID_ARGUMENT; 708 709 blobmsg_parse(event_policy, __EVENT_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 710 if (!tb[EVENT_TYPE] || !tb[EVENT_DATA]) 711 return UBUS_STATUS_INVALID_ARGUMENT; 712 713 event = blobmsg_get_string(tb[EVENT_TYPE]); 714 trigger_event(event, tb[EVENT_DATA]); 715 716 if (!strcmp(event, "config.change")) { 717 struct blob_attr *tb2[__VALIDATE_MAX]; 718 719 blobmsg_parse(validate_policy, __VALIDATE_MAX, tb2, 720 blobmsg_data(tb[EVENT_DATA]), blobmsg_data_len(tb[EVENT_DATA])); 721 if (tb2[VALIDATE_PACKAGE]) 722 ubus_event_bcast("config.change", "config", 723 blobmsg_get_string(tb2[VALIDATE_PACKAGE]), NULL, NULL); 724 } 725 return 0; 726 } 727 728 static int 729 service_handle_validate(struct ubus_context *ctx, struct ubus_object *obj, 730 struct ubus_request_data *req, const char *method, 731 struct blob_attr *msg) 732 { 733 struct blob_attr *tb[__VALIDATE_MAX]; 734 char *p = NULL, *t = NULL; 735 736 if (!msg) 737 return UBUS_STATUS_INVALID_ARGUMENT; 738 739 blobmsg_parse(validate_policy, __VALIDATE_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 740 if (tb[VALIDATE_SERVICE]) { 741 return 0; 742 } 743 if (tb[VALIDATE_PACKAGE]) 744 p = blobmsg_get_string(tb[VALIDATE_PACKAGE]); 745 746 if (tb[VALIDATE_TYPE]) 747 t = blobmsg_get_string(tb[VALIDATE_TYPE]); 748 749 blob_buf_init(&b, 0); 750 service_validate_dump_all(&b, p, t); 751 ubus_send_reply(ctx, req, b.head); 752 753 return 0; 754 } 755 756 static int 757 service_get_data(struct ubus_context *ctx, struct ubus_object *obj, 758 struct ubus_request_data *req, const char *method, 759 struct blob_attr *msg) 760 { 761 struct service_instance *in; 762 struct service *s; 763 struct blob_attr *tb[__DATA_MAX]; 764 const char *name = NULL; 765 const char *instance = NULL; 766 const char *type = NULL; 767 768 blobmsg_parse(get_data_policy, __DATA_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 769 if (tb[DATA_NAME]) 770 name = blobmsg_data(tb[DATA_NAME]); 771 if (tb[DATA_INSTANCE]) 772 instance = blobmsg_data(tb[DATA_INSTANCE]); 773 if (tb[DATA_TYPE]) 774 type = blobmsg_data(tb[DATA_TYPE]); 775 776 blob_buf_init(&b, 0); 777 avl_for_each_element(&services, s, avl) { 778 void *cs = NULL; 779 void *ci = NULL; 780 struct blobmsg_list_node *var; 781 782 if (name && strcmp(name, s->name)) 783 continue; 784 785 blobmsg_list_for_each(&s->data_blob, var) { 786 if (type && strcmp(blobmsg_name(var->data), type)) 787 continue; 788 789 if (!cs) 790 cs = blobmsg_open_table(&b, s->name); 791 792 blobmsg_add_blob(&b, var->data); 793 } 794 795 vlist_for_each_element(&s->instances, in, node) { 796 ci = NULL; 797 798 if (instance && strcmp(instance, in->name)) 799 continue; 800 801 blobmsg_list_for_each(&in->data, var) { 802 if (type && 803 strcmp(blobmsg_name(var->data), type)) 804 continue; 805 806 if (!cs) 807 cs = blobmsg_open_table(&b, s->name); 808 if (!ci) 809 ci = blobmsg_open_table(&b, in->name); 810 811 blobmsg_add_blob(&b, var->data); 812 } 813 814 if (ci) 815 blobmsg_close_table(&b, ci); 816 } 817 818 if (cs) 819 blobmsg_close_table(&b, cs); 820 } 821 822 ubus_send_reply(ctx, req, b.head); 823 return 0; 824 } 825 826 static int 827 container_handle_console(struct ubus_context *ctx, struct ubus_object *obj, 828 struct ubus_request_data *req, const char *method, 829 struct blob_attr *msg) 830 { 831 bool attach = !strcmp(method, "console_attach"); 832 struct blob_attr *tb[__CONTAINER_CONSOLE_MAX]; 833 struct service *s; 834 struct service_instance *in; 835 int console_fd = -1; 836 837 console_fd = ubus_request_get_caller_fd(req); 838 if (console_fd < 0) 839 return UBUS_STATUS_INVALID_ARGUMENT; 840 841 if (!msg) 842 goto err_console_fd; 843 844 blobmsg_parse(container_console_policy, __CONTAINER_CONSOLE_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 845 if (!tb[CONTAINER_CONSOLE_NAME]) 846 goto err_console_fd; 847 848 s = avl_find_element(&containers, blobmsg_data(tb[CONTAINER_CONSOLE_NAME]), s, avl); 849 if (!s) 850 goto err_console_fd; 851 852 if (tb[CONTAINER_CONSOLE_INSTANCE]) { 853 in = vlist_find(&s->instances, blobmsg_data(tb[CONTAINER_CONSOLE_INSTANCE]), in, node); 854 } else { 855 /* use first element in instances list */ 856 vlist_for_each_element(&s->instances, in, node) 857 break; 858 } 859 if (!in) 860 goto err_console_fd; 861 862 if (attach) { 863 if (in->console.fd.fd < 0) { 864 close(console_fd); 865 return UBUS_STATUS_NOT_SUPPORTED; 866 } 867 868 /* close and replace existing attached console */ 869 if (in->console_client.fd.fd > -1) 870 close(in->console_client.fd.fd); 871 872 ustream_fd_init(&in->console_client, console_fd); 873 } else { 874 ustream_fd_init(&in->console, console_fd); 875 } 876 877 return UBUS_STATUS_OK; 878 err_console_fd: 879 close(console_fd); 880 return UBUS_STATUS_INVALID_ARGUMENT; 881 } 882 883 enum { 884 SERVICE_WATCHDOG_MODE, 885 SERVICE_WATCHDOG_TIMEOUT, 886 SERVICE_WATCHDOG_NAME, 887 SERVICE_WATCHDOG_INSTANCE, 888 __SERVICE_WATCHDOG_MAX, 889 }; 890 891 static const struct blobmsg_policy service_watchdog_policy[__SERVICE_WATCHDOG_MAX] = { 892 [SERVICE_WATCHDOG_MODE] = { "mode", BLOBMSG_TYPE_INT32 }, 893 [SERVICE_WATCHDOG_NAME] = { "name", BLOBMSG_TYPE_STRING }, 894 [SERVICE_WATCHDOG_TIMEOUT] = { "timeout", BLOBMSG_TYPE_INT32 }, 895 [SERVICE_WATCHDOG_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING }, 896 }; 897 898 static int 899 service_handle_watchdog(struct ubus_context *ctx, struct ubus_object *obj, 900 struct ubus_request_data *req, const char *method, 901 struct blob_attr *msg) 902 { 903 struct blob_attr *tb[__SERVICE_WATCHDOG_MAX] = {0}; 904 struct service *s; 905 struct blob_attr *cur; 906 struct service_instance *in; 907 908 blobmsg_parse(service_watchdog_policy, __SERVICE_WATCHDOG_MAX, tb, blobmsg_data(msg), blobmsg_data_len(msg)); 909 cur = tb[SERVICE_WATCHDOG_NAME]; 910 if (!cur) 911 return UBUS_STATUS_NOT_FOUND; 912 913 s = avl_find_element(&services, blobmsg_data(cur), s, avl); 914 if (!s) 915 return UBUS_STATUS_NOT_FOUND; 916 917 cur = tb[SERVICE_WATCHDOG_INSTANCE]; 918 if (!cur) 919 return UBUS_STATUS_NOT_FOUND; 920 921 in = vlist_find(&s->instances, blobmsg_data(cur), in, node); 922 if (!in) { 923 ERROR("instance %s not found\n", blobmsg_get_string(cur)); 924 return UBUS_STATUS_NOT_FOUND; 925 } 926 927 if (tb[SERVICE_WATCHDOG_MODE]) 928 in->watchdog.mode = blobmsg_get_u32(tb[SERVICE_WATCHDOG_MODE]); 929 930 if (tb[SERVICE_WATCHDOG_TIMEOUT]) 931 in->watchdog.freq = blobmsg_get_u32(tb[SERVICE_WATCHDOG_TIMEOUT]); 932 933 if (in->watchdog.mode == INSTANCE_WATCHDOG_MODE_DISABLED) 934 uloop_timeout_cancel(&in->watchdog.timeout); 935 else 936 uloop_timeout_set(&in->watchdog.timeout, in->watchdog.freq * 1000); 937 938 blob_buf_init(&b, 0); 939 blobmsg_add_string(&b, "name", blobmsg_get_string(tb[SERVICE_WATCHDOG_NAME])); 940 blobmsg_add_string(&b, "instance", blobmsg_get_string(tb[SERVICE_WATCHDOG_INSTANCE])); 941 blobmsg_add_u32(&b, "mode", in->watchdog.mode); 942 blobmsg_add_u32(&b, "timeout", in->watchdog.freq); 943 944 ubus_send_reply(ctx, req, b.head); 945 946 return UBUS_STATUS_OK; 947 } 948 949 static struct ubus_method main_object_methods[] = { 950 UBUS_METHOD("set", service_handle_set, service_set_attrs), 951 UBUS_METHOD("add", service_handle_set, service_set_attrs), 952 UBUS_METHOD("list", service_handle_list, service_list_attrs), 953 UBUS_METHOD("delete", service_handle_delete, service_del_attrs), 954 UBUS_METHOD("signal", service_handle_signal, service_signal_attrs), 955 UBUS_METHOD("update_start", service_handle_update, service_attrs), 956 UBUS_METHOD("update_complete", service_handle_update, service_attrs), 957 UBUS_METHOD("event", service_handle_event, event_policy), 958 UBUS_METHOD("validate", service_handle_validate, validate_policy), 959 UBUS_METHOD("get_data", service_get_data, get_data_policy), 960 UBUS_METHOD("state", service_handle_state, service_state_attrs), 961 UBUS_METHOD("watchdog", service_handle_watchdog, service_watchdog_policy), 962 }; 963 964 static struct ubus_object_type main_object_type = 965 UBUS_OBJECT_TYPE("service", main_object_methods); 966 967 static struct ubus_object main_object = { 968 .name = "service", 969 .type = &main_object_type, 970 .methods = main_object_methods, 971 .n_methods = ARRAY_SIZE(main_object_methods), 972 }; 973 974 int 975 service_start_early(char *name, char *cmdline, char *user, char *group) 976 { 977 void *instances, *instance, *command, *respawn; 978 char *t; 979 980 blob_buf_init(&b, 0); 981 blobmsg_add_string(&b, "name", name); 982 instances = blobmsg_open_table(&b, "instances"); 983 instance = blobmsg_open_table(&b, "instance1"); 984 command = blobmsg_open_array(&b, "command"); 985 t = strtok(cmdline, " "); 986 while (t) { 987 blobmsg_add_string(&b, NULL, t); 988 t = strtok(NULL, " "); 989 } 990 blobmsg_close_array(&b, command); 991 respawn = blobmsg_open_array(&b, "respawn"); 992 blobmsg_add_string(&b, NULL, "3600"); 993 blobmsg_add_string(&b, NULL, "1"); 994 blobmsg_add_string(&b, NULL, ""); 995 blobmsg_close_array(&b, respawn); 996 if (user) 997 blobmsg_add_string(&b, "user", user); 998 if (group) 999 blobmsg_add_string(&b, "group", group); 1000 1001 blobmsg_close_table(&b, instance); 1002 blobmsg_close_table(&b, instances); 1003 1004 return service_handle_set(NULL, NULL, NULL, "add", b.head); 1005 } 1006 1007 void service_stopped(struct service *s) 1008 { 1009 _service_stopped(s, false); 1010 } 1011 1012 static void _service_stopped(struct service *s, bool container) 1013 { 1014 if (s->deleted && avl_is_empty(&s->instances.avl)) { 1015 if (container) { 1016 service_event("container.stop", s->name, NULL); 1017 avl_delete(&containers, &s->avl); 1018 } else { 1019 service_event("service.stop", s->name, NULL); 1020 avl_delete(&services, &s->avl); 1021 } 1022 trigger_del(s); 1023 service_validate_del(s); 1024 free(s->trigger); 1025 free(s); 1026 } 1027 } 1028 1029 void service_event(const char *type, const char *service, const char *instance) 1030 { 1031 ubus_event_bcast(type, "service", service, "instance", instance); 1032 } 1033 1034 static struct ubus_method container_object_methods[] = { 1035 UBUS_METHOD("set", service_handle_set, service_set_attrs), 1036 UBUS_METHOD("add", service_handle_set, service_set_attrs), 1037 UBUS_METHOD("list", service_handle_list, service_list_attrs), 1038 UBUS_METHOD("delete", service_handle_delete, service_del_attrs), 1039 UBUS_METHOD("state", service_handle_state, service_state_attrs), 1040 UBUS_METHOD_NOARG("get_features", container_handle_features), 1041 UBUS_METHOD("console_set", container_handle_console, container_console_policy), 1042 UBUS_METHOD("console_attach", container_handle_console, container_console_policy), 1043 }; 1044 1045 static struct ubus_object_type container_object_type = 1046 UBUS_OBJECT_TYPE("container", container_object_methods); 1047 1048 static struct ubus_object container_object = { 1049 .name = "container", 1050 .type = &container_object_type, 1051 .methods = container_object_methods, 1052 .n_methods = ARRAY_SIZE(container_object_methods), 1053 }; 1054 1055 void ubus_init_service(struct ubus_context *_ctx) 1056 { 1057 struct stat statbuf; 1058 1059 ctx = _ctx; 1060 ubus_add_object(ctx, &main_object); 1061 1062 if (!stat("/sbin/ujail", &statbuf)) 1063 ubus_add_object(ctx, &container_object); 1064 } 1065
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