service/service.c

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