1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdio.h> 18 #include <stdlib.h> 19 #include <unistd.h> 20 #include <fcntl.h> 21 #include <stdarg.h> 22 #include <string.h> 23 #include <stddef.h> 24 #include <ctype.h> 25 26 #include "init.h" 27 #include "parser.h" 28 #include "init_parser.h" 29 #include "log.h" 30 #include "property_service.h" 31 #include "util.h" 32 33 #include <cutils/iosched_policy.h> 34 #include <cutils/list.h> 35 36 #define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_ 37 #include <sys/_system_properties.h> 38 39 static list_declare(service_list); 40 static list_declare(action_list); 41 static list_declare(action_queue); 42 43 struct import { 44 struct listnode list; 45 const char *filename; 46 }; 47 48 static void *parse_service(struct parse_state *state, int nargs, char **args); 49 static void parse_line_service(struct parse_state *state, int nargs, char **args); 50 51 static void *parse_action(struct parse_state *state, int nargs, char **args); 52 static void parse_line_action(struct parse_state *state, int nargs, char **args); 53 54 #define SECTION 0x01 55 #define COMMAND 0x02 56 #define OPTION 0x04 57 58 #include "keywords.h" 59 60 #define KEYWORD(symbol, flags, nargs, func) \ 61 [ K_##symbol ] = { #symbol, func, nargs + 1, flags, }, 62 63 struct { 64 const char *name; 65 int (*func)(int nargs, char **args); 66 unsigned char nargs; 67 unsigned char flags; 68 } keyword_info[KEYWORD_COUNT] = { 69 [ K_UNKNOWN ] = { "unknown", 0, 0, 0 }, 70 #include "keywords.h" 71 }; 72 #undef KEYWORD 73 74 #define kw_is(kw, type) (keyword_info[kw].flags & (type)) 75 #define kw_name(kw) (keyword_info[kw].name) 76 #define kw_func(kw) (keyword_info[kw].func) 77 #define kw_nargs(kw) (keyword_info[kw].nargs) 78 79 int lookup_keyword(const char *s) 80 { 81 switch (*s++) { 82 case 'c': 83 if (!strcmp(s, "opy")) return K_copy; 84 if (!strcmp(s, "apability")) return K_capability; 85 if (!strcmp(s, "hdir")) return K_chdir; 86 if (!strcmp(s, "hroot")) return K_chroot; 87 if (!strcmp(s, "lass")) return K_class; 88 if (!strcmp(s, "lass_start")) return K_class_start; 89 if (!strcmp(s, "lass_stop")) return K_class_stop; 90 if (!strcmp(s, "lass_reset")) return K_class_reset; 91 if (!strcmp(s, "onsole")) return K_console; 92 if (!strcmp(s, "hown")) return K_chown; 93 if (!strcmp(s, "hmod")) return K_chmod; 94 if (!strcmp(s, "ritical")) return K_critical; 95 break; 96 case 'd': 97 if (!strcmp(s, "isabled")) return K_disabled; 98 if (!strcmp(s, "omainname")) return K_domainname; 99 break; 100 case 'e': 101 if (!strcmp(s, "xec")) return K_exec; 102 if (!strcmp(s, "xport")) return K_export; 103 break; 104 case 'g': 105 if (!strcmp(s, "roup")) return K_group; 106 break; 107 case 'h': 108 if (!strcmp(s, "ostname")) return K_hostname; 109 break; 110 case 'i': 111 if (!strcmp(s, "oprio")) return K_ioprio; 112 if (!strcmp(s, "fup")) return K_ifup; 113 if (!strcmp(s, "nsmod")) return K_insmod; 114 if (!strcmp(s, "mport")) return K_import; 115 break; 116 case 'k': 117 if (!strcmp(s, "eycodes")) return K_keycodes; 118 break; 119 case 'l': 120 if (!strcmp(s, "oglevel")) return K_loglevel; 121 if (!strcmp(s, "oad_persist_props")) return K_load_persist_props; 122 break; 123 case 'm': 124 if (!strcmp(s, "kdir")) return K_mkdir; 125 if (!strcmp(s, "ount_all")) return K_mount_all; 126 if (!strcmp(s, "ount")) return K_mount; 127 break; 128 case 'o': 129 if (!strcmp(s, "n")) return K_on; 130 if (!strcmp(s, "neshot")) return K_oneshot; 131 if (!strcmp(s, "nrestart")) return K_onrestart; 132 break; 133 case 'r': 134 if (!strcmp(s, "estart")) return K_restart; 135 if (!strcmp(s, "estorecon")) return K_restorecon; 136 if (!strcmp(s, "mdir")) return K_rmdir; 137 if (!strcmp(s, "m")) return K_rm; 138 break; 139 case 's': 140 if (!strcmp(s, "eclabel")) return K_seclabel; 141 if (!strcmp(s, "ervice")) return K_service; 142 if (!strcmp(s, "etcon")) return K_setcon; 143 if (!strcmp(s, "etenforce")) return K_setenforce; 144 if (!strcmp(s, "etenv")) return K_setenv; 145 if (!strcmp(s, "etkey")) return K_setkey; 146 if (!strcmp(s, "etprop")) return K_setprop; 147 if (!strcmp(s, "etrlimit")) return K_setrlimit; 148 if (!strcmp(s, "etsebool")) return K_setsebool; 149 if (!strcmp(s, "ocket")) return K_socket; 150 if (!strcmp(s, "tart")) return K_start; 151 if (!strcmp(s, "top")) return K_stop; 152 if (!strcmp(s, "ymlink")) return K_symlink; 153 if (!strcmp(s, "ysclktz")) return K_sysclktz; 154 break; 155 case 't': 156 if (!strcmp(s, "rigger")) return K_trigger; 157 break; 158 case 'u': 159 if (!strcmp(s, "ser")) return K_user; 160 break; 161 case 'w': 162 if (!strcmp(s, "rite")) return K_write; 163 if (!strcmp(s, "ait")) return K_wait; 164 break; 165 } 166 return K_UNKNOWN; 167 } 168 169 void parse_line_no_op(struct parse_state *state, int nargs, char **args) 170 { 171 } 172 173 static int push_chars(char **dst, int *len, const char *chars, int cnt) 174 { 175 if (cnt > *len) 176 return -1; 177 178 memcpy(*dst, chars, cnt); 179 *dst += cnt; 180 *len -= cnt; 181 182 return 0; 183 } 184 185 int expand_props(char *dst, const char *src, int dst_size) 186 { 187 int cnt = 0; 188 char *dst_ptr = dst; 189 const char *src_ptr = src; 190 int src_len; 191 int idx = 0; 192 int ret = 0; 193 int left = dst_size - 1; 194 195 if (!src || !dst || dst_size == 0) 196 return -1; 197 198 src_len = strlen(src); 199 200 /* - variables can either be $x.y or ${x.y}, in case they are only part 201 * of the string. 202 * - will accept $$ as a literal $. 203 * - no nested property expansion, i.e. ${foo.${bar}} is not supported, 204 * bad things will happen 205 */ 206 while (*src_ptr && left > 0) { 207 char *c; 208 char prop[PROP_NAME_MAX + 1]; 209 const char *prop_val; 210 int prop_len = 0; 211 212 c = strchr(src_ptr, '$'); 213 if (!c) { 214 while (left-- > 0 && *src_ptr) 215 *(dst_ptr++) = *(src_ptr++); 216 break; 217 } 218 219 memset(prop, 0, sizeof(prop)); 220 221 ret = push_chars(&dst_ptr, &left, src_ptr, c - src_ptr); 222 if (ret < 0) 223 goto err_nospace; 224 c++; 225 226 if (*c == '$') { 227 *(dst_ptr++) = *(c++); 228 src_ptr = c; 229 left--; 230 continue; 231 } else if (*c == '\0') { 232 break; 233 } 234 235 if (*c == '{') { 236 c++; 237 while (*c && *c != '}' && prop_len < PROP_NAME_MAX) 238 prop[prop_len++] = *(c++); 239 if (*c != '}') { 240 /* failed to find closing brace, abort. */ 241 if (prop_len == PROP_NAME_MAX) 242 ERROR("prop name too long during expansion of '%s'\n", 243 src); 244 else if (*c == '\0') 245 ERROR("unexpected end of string in '%s', looking for }\n", 246 src); 247 goto err; 248 } 249 prop[prop_len] = '\0'; 250 c++; 251 } else if (*c) { 252 while (*c && prop_len < PROP_NAME_MAX) 253 prop[prop_len++] = *(c++); 254 if (prop_len == PROP_NAME_MAX && *c != '\0') { 255 ERROR("prop name too long in '%s'\n", src); 256 goto err; 257 } 258 prop[prop_len] = '\0'; 259 ERROR("using deprecated syntax for specifying property '%s', use ${name} instead\n", 260 prop); 261 } 262 263 if (prop_len == 0) { 264 ERROR("invalid zero-length prop name in '%s'\n", src); 265 goto err; 266 } 267 268 prop_val = property_get(prop); 269 if (!prop_val) { 270 ERROR("property '%s' doesn't exist while expanding '%s'\n", 271 prop, src); 272 goto err; 273 } 274 275 ret = push_chars(&dst_ptr, &left, prop_val, strlen(prop_val)); 276 if (ret < 0) 277 goto err_nospace; 278 src_ptr = c; 279 continue; 280 } 281 282 *dst_ptr = '\0'; 283 return 0; 284 285 err_nospace: 286 ERROR("destination buffer overflow while expanding '%s'\n", src); 287 err: 288 return -1; 289 } 290 291 void parse_import(struct parse_state *state, int nargs, char **args) 292 { 293 struct listnode *import_list = state->priv; 294 struct import *import; 295 char conf_file[PATH_MAX]; 296 int ret; 297 298 if (nargs != 2) { 299 ERROR("single argument needed for import\n"); 300 return; 301 } 302 303 ret = expand_props(conf_file, args[1], sizeof(conf_file)); 304 if (ret) { 305 ERROR("error while handling import on line '%d' in '%s'\n", 306 state->line, state->filename); 307 return; 308 } 309 310 import = calloc(1, sizeof(struct import)); 311 import->filename = strdup(conf_file); 312 list_add_tail(import_list, &import->list); 313 INFO("found import '%s', adding to import list", import->filename); 314 } 315 316 void parse_new_section(struct parse_state *state, int kw, 317 int nargs, char **args) 318 { 319 printf("[ %s %s ]\n", args[0], 320 nargs > 1 ? args[1] : ""); 321 switch(kw) { 322 case K_service: 323 state->context = parse_service(state, nargs, args); 324 if (state->context) { 325 state->parse_line = parse_line_service; 326 return; 327 } 328 break; 329 case K_on: 330 state->context = parse_action(state, nargs, args); 331 if (state->context) { 332 state->parse_line = parse_line_action; 333 return; 334 } 335 break; 336 case K_import: 337 parse_import(state, nargs, args); 338 break; 339 } 340 state->parse_line = parse_line_no_op; 341 } 342 343 static void parse_config(const char *fn, char *s) 344 { 345 struct parse_state state; 346 struct listnode import_list; 347 struct listnode *node; 348 char *args[INIT_PARSER_MAXARGS]; 349 int nargs; 350 351 nargs = 0; 352 state.filename = fn; 353 state.line = 0; 354 state.ptr = s; 355 state.nexttoken = 0; 356 state.parse_line = parse_line_no_op; 357 358 list_init(&import_list); 359 state.priv = &import_list; 360 361 for (;;) { 362 switch (next_token(&state)) { 363 case T_EOF: 364 state.parse_line(&state, 0, 0); 365 goto parser_done; 366 case T_NEWLINE: 367 state.line++; 368 if (nargs) { 369 int kw = lookup_keyword(args[0]); 370 if (kw_is(kw, SECTION)) { 371 state.parse_line(&state, 0, 0); 372 parse_new_section(&state, kw, nargs, args); 373 } else { 374 state.parse_line(&state, nargs, args); 375 } 376 nargs = 0; 377 } 378 break; 379 case T_TEXT: 380 if (nargs < INIT_PARSER_MAXARGS) { 381 args[nargs++] = state.text; 382 } 383 break; 384 } 385 } 386 387 parser_done: 388 list_for_each(node, &import_list) { 389 struct import *import = node_to_item(node, struct import, list); 390 int ret; 391 392 INFO("importing '%s'", import->filename); 393 ret = init_parse_config_file(import->filename); 394 if (ret) 395 ERROR("could not import file '%s' from '%s'\n", 396 import->filename, fn); 397 } 398 } 399 400 int init_parse_config_file(const char *fn) 401 { 402 char *data; 403 data = read_file(fn, 0); 404 if (!data) return -1; 405 406 parse_config(fn, data); 407 DUMP(); 408 return 0; 409 } 410 411 static int valid_name(const char *name) 412 { 413 if (strlen(name) > 16) { 414 return 0; 415 } 416 while (*name) { 417 if (!isalnum(*name) && (*name != '_') && (*name != '-')) { 418 return 0; 419 } 420 name++; 421 } 422 return 1; 423 } 424 425 struct service *service_find_by_name(const char *name) 426 { 427 struct listnode *node; 428 struct service *svc; 429 list_for_each(node, &service_list) { 430 svc = node_to_item(node, struct service, slist); 431 if (!strcmp(svc->name, name)) { 432 return svc; 433 } 434 } 435 return 0; 436 } 437 438 struct service *service_find_by_pid(pid_t pid) 439 { 440 struct listnode *node; 441 struct service *svc; 442 list_for_each(node, &service_list) { 443 svc = node_to_item(node, struct service, slist); 444 if (svc->pid == pid) { 445 return svc; 446 } 447 } 448 return 0; 449 } 450 451 struct service *service_find_by_keychord(int keychord_id) 452 { 453 struct listnode *node; 454 struct service *svc; 455 list_for_each(node, &service_list) { 456 svc = node_to_item(node, struct service, slist); 457 if (svc->keychord_id == keychord_id) { 458 return svc; 459 } 460 } 461 return 0; 462 } 463 464 void service_for_each(void (*func)(struct service *svc)) 465 { 466 struct listnode *node; 467 struct service *svc; 468 list_for_each(node, &service_list) { 469 svc = node_to_item(node, struct service, slist); 470 func(svc); 471 } 472 } 473 474 void service_for_each_class(const char *classname, 475 void (*func)(struct service *svc)) 476 { 477 struct listnode *node; 478 struct service *svc; 479 list_for_each(node, &service_list) { 480 svc = node_to_item(node, struct service, slist); 481 if (!strcmp(svc->classname, classname)) { 482 func(svc); 483 } 484 } 485 } 486 487 void service_for_each_flags(unsigned matchflags, 488 void (*func)(struct service *svc)) 489 { 490 struct listnode *node; 491 struct service *svc; 492 list_for_each(node, &service_list) { 493 svc = node_to_item(node, struct service, slist); 494 if (svc->flags & matchflags) { 495 func(svc); 496 } 497 } 498 } 499 500 void action_for_each_trigger(const char *trigger, 501 void (*func)(struct action *act)) 502 { 503 struct listnode *node; 504 struct action *act; 505 list_for_each(node, &action_list) { 506 act = node_to_item(node, struct action, alist); 507 if (!strcmp(act->name, trigger)) { 508 func(act); 509 } 510 } 511 } 512 513 void queue_property_triggers(const char *name, const char *value) 514 { 515 struct listnode *node; 516 struct action *act; 517 list_for_each(node, &action_list) { 518 act = node_to_item(node, struct action, alist); 519 if (!strncmp(act->name, "property:", strlen("property:"))) { 520 const char *test = act->name + strlen("property:"); 521 int name_length = strlen(name); 522 523 if (!strncmp(name, test, name_length) && 524 test[name_length] == '=' && 525 (!strcmp(test + name_length + 1, value) || 526 !strcmp(test + name_length + 1, "*"))) { 527 action_add_queue_tail(act); 528 } 529 } 530 } 531 } 532 533 void queue_all_property_triggers() 534 { 535 struct listnode *node; 536 struct action *act; 537 list_for_each(node, &action_list) { 538 act = node_to_item(node, struct action, alist); 539 if (!strncmp(act->name, "property:", strlen("property:"))) { 540 /* parse property name and value 541 syntax is property:<name>=<value> */ 542 const char* name = act->name + strlen("property:"); 543 const char* equals = strchr(name, '='); 544 if (equals) { 545 char prop_name[PROP_NAME_MAX + 1]; 546 const char* value; 547 int length = equals - name; 548 if (length > PROP_NAME_MAX) { 549 ERROR("property name too long in trigger %s", act->name); 550 } else { 551 memcpy(prop_name, name, length); 552 prop_name[length] = 0; 553 554 /* does the property exist, and match the trigger value? */ 555 value = property_get(prop_name); 556 if (value && (!strcmp(equals + 1, value) || 557 !strcmp(equals + 1, "*"))) { 558 action_add_queue_tail(act); 559 } 560 } 561 } 562 } 563 } 564 } 565 566 void queue_builtin_action(int (*func)(int nargs, char **args), char *name) 567 { 568 struct action *act; 569 struct command *cmd; 570 571 act = calloc(1, sizeof(*act)); 572 act->name = name; 573 list_init(&act->commands); 574 575 cmd = calloc(1, sizeof(*cmd)); 576 cmd->func = func; 577 cmd->args[0] = name; 578 list_add_tail(&act->commands, &cmd->clist); 579 580 list_add_tail(&action_list, &act->alist); 581 action_add_queue_tail(act); 582 } 583 584 void action_add_queue_tail(struct action *act) 585 { 586 list_add_tail(&action_queue, &act->qlist); 587 } 588 589 struct action *action_remove_queue_head(void) 590 { 591 if (list_empty(&action_queue)) { 592 return 0; 593 } else { 594 struct listnode *node = list_head(&action_queue); 595 struct action *act = node_to_item(node, struct action, qlist); 596 list_remove(node); 597 return act; 598 } 599 } 600 601 int action_queue_empty() 602 { 603 return list_empty(&action_queue); 604 } 605 606 static void *parse_service(struct parse_state *state, int nargs, char **args) 607 { 608 struct service *svc; 609 if (nargs < 3) { 610 parse_error(state, "services must have a name and a program\n"); 611 return 0; 612 } 613 if (!valid_name(args[1])) { 614 parse_error(state, "invalid service name '%s'\n", args[1]); 615 return 0; 616 } 617 618 svc = service_find_by_name(args[1]); 619 if (svc) { 620 parse_error(state, "ignored duplicate definition of service '%s'\n", args[1]); 621 return 0; 622 } 623 624 nargs -= 2; 625 svc = calloc(1, sizeof(*svc) + sizeof(char*) * nargs); 626 if (!svc) { 627 parse_error(state, "out of memory\n"); 628 return 0; 629 } 630 svc->name = args[1]; 631 svc->classname = "default"; 632 memcpy(svc->args, args + 2, sizeof(char*) * nargs); 633 svc->args[nargs] = 0; 634 svc->nargs = nargs; 635 svc->onrestart.name = "onrestart"; 636 list_init(&svc->onrestart.commands); 637 list_add_tail(&service_list, &svc->slist); 638 return svc; 639 } 640 641 static void parse_line_service(struct parse_state *state, int nargs, char **args) 642 { 643 struct service *svc = state->context; 644 struct command *cmd; 645 int i, kw, kw_nargs; 646 647 if (nargs == 0) { 648 return; 649 } 650 651 svc->ioprio_class = IoSchedClass_NONE; 652 653 kw = lookup_keyword(args[0]); 654 switch (kw) { 655 case K_capability: 656 break; 657 case K_class: 658 if (nargs != 2) { 659 parse_error(state, "class option requires a classname\n"); 660 } else { 661 svc->classname = args[1]; 662 } 663 break; 664 case K_console: 665 svc->flags |= SVC_CONSOLE; 666 break; 667 case K_disabled: 668 svc->flags |= SVC_DISABLED; 669 svc->flags |= SVC_RC_DISABLED; 670 break; 671 case K_ioprio: 672 if (nargs != 3) { 673 parse_error(state, "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n"); 674 } else { 675 svc->ioprio_pri = strtoul(args[2], 0, 8); 676 677 if (svc->ioprio_pri < 0 || svc->ioprio_pri > 7) { 678 parse_error(state, "priority value must be range 0 - 7\n"); 679 break; 680 } 681 682 if (!strcmp(args[1], "rt")) { 683 svc->ioprio_class = IoSchedClass_RT; 684 } else if (!strcmp(args[1], "be")) { 685 svc->ioprio_class = IoSchedClass_BE; 686 } else if (!strcmp(args[1], "idle")) { 687 svc->ioprio_class = IoSchedClass_IDLE; 688 } else { 689 parse_error(state, "ioprio option usage: ioprio <rt|be|idle> <0-7>\n"); 690 } 691 } 692 break; 693 case K_group: 694 if (nargs < 2) { 695 parse_error(state, "group option requires a group id\n"); 696 } else if (nargs > NR_SVC_SUPP_GIDS + 2) { 697 parse_error(state, "group option accepts at most %d supp. groups\n", 698 NR_SVC_SUPP_GIDS); 699 } else { 700 int n; 701 svc->gid = decode_uid(args[1]); 702 for (n = 2; n < nargs; n++) { 703 svc->supp_gids[n-2] = decode_uid(args[n]); 704 } 705 svc->nr_supp_gids = n - 2; 706 } 707 break; 708 case K_keycodes: 709 if (nargs < 2) { 710 parse_error(state, "keycodes option requires atleast one keycode\n"); 711 } else { 712 svc->keycodes = malloc((nargs - 1) * sizeof(svc->keycodes[0])); 713 if (!svc->keycodes) { 714 parse_error(state, "could not allocate keycodes\n"); 715 } else { 716 svc->nkeycodes = nargs - 1; 717 for (i = 1; i < nargs; i++) { 718 svc->keycodes[i - 1] = atoi(args[i]); 719 } 720 } 721 } 722 break; 723 case K_oneshot: 724 svc->flags |= SVC_ONESHOT; 725 break; 726 case K_onrestart: 727 nargs--; 728 args++; 729 kw = lookup_keyword(args[0]); 730 if (!kw_is(kw, COMMAND)) { 731 parse_error(state, "invalid command '%s'\n", args[0]); 732 break; 733 } 734 kw_nargs = kw_nargs(kw); 735 if (nargs < kw_nargs) { 736 parse_error(state, "%s requires %d %s\n", args[0], kw_nargs - 1, 737 kw_nargs > 2 ? "arguments" : "argument"); 738 break; 739 } 740 741 cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); 742 cmd->func = kw_func(kw); 743 cmd->nargs = nargs; 744 memcpy(cmd->args, args, sizeof(char*) * nargs); 745 list_add_tail(&svc->onrestart.commands, &cmd->clist); 746 break; 747 case K_critical: 748 svc->flags |= SVC_CRITICAL; 749 break; 750 case K_setenv: { /* name value */ 751 struct svcenvinfo *ei; 752 if (nargs < 2) { 753 parse_error(state, "setenv option requires name and value arguments\n"); 754 break; 755 } 756 ei = calloc(1, sizeof(*ei)); 757 if (!ei) { 758 parse_error(state, "out of memory\n"); 759 break; 760 } 761 ei->name = args[1]; 762 ei->value = args[2]; 763 ei->next = svc->envvars; 764 svc->envvars = ei; 765 break; 766 } 767 case K_socket: {/* name type perm [ uid gid ] */ 768 struct socketinfo *si; 769 if (nargs < 4) { 770 parse_error(state, "socket option requires name, type, perm arguments\n"); 771 break; 772 } 773 if (strcmp(args[2],"dgram") && strcmp(args[2],"stream") 774 && strcmp(args[2],"seqpacket")) { 775 parse_error(state, "socket type must be 'dgram', 'stream' or 'seqpacket'\n"); 776 break; 777 } 778 si = calloc(1, sizeof(*si)); 779 if (!si) { 780 parse_error(state, "out of memory\n"); 781 break; 782 } 783 si->name = args[1]; 784 si->type = args[2]; 785 si->perm = strtoul(args[3], 0, 8); 786 if (nargs > 4) 787 si->uid = decode_uid(args[4]); 788 if (nargs > 5) 789 si->gid = decode_uid(args[5]); 790 si->next = svc->sockets; 791 svc->sockets = si; 792 break; 793 } 794 case K_user: 795 if (nargs != 2) { 796 parse_error(state, "user option requires a user id\n"); 797 } else { 798 svc->uid = decode_uid(args[1]); 799 } 800 break; 801 case K_seclabel: 802 #ifdef HAVE_SELINUX 803 if (nargs != 2) { 804 parse_error(state, "seclabel option requires a label string\n"); 805 } else { 806 svc->seclabel = args[1]; 807 } 808 #endif 809 break; 810 811 default: 812 parse_error(state, "invalid option '%s'\n", args[0]); 813 } 814 } 815 816 static void *parse_action(struct parse_state *state, int nargs, char **args) 817 { 818 struct action *act; 819 if (nargs < 2) { 820 parse_error(state, "actions must have a trigger\n"); 821 return 0; 822 } 823 if (nargs > 2) { 824 parse_error(state, "actions may not have extra parameters\n"); 825 return 0; 826 } 827 act = calloc(1, sizeof(*act)); 828 act->name = args[1]; 829 list_init(&act->commands); 830 list_add_tail(&action_list, &act->alist); 831 /* XXX add to hash */ 832 return act; 833 } 834 835 static void parse_line_action(struct parse_state* state, int nargs, char **args) 836 { 837 struct command *cmd; 838 struct action *act = state->context; 839 int (*func)(int nargs, char **args); 840 int kw, n; 841 842 if (nargs == 0) { 843 return; 844 } 845 846 kw = lookup_keyword(args[0]); 847 if (!kw_is(kw, COMMAND)) { 848 parse_error(state, "invalid command '%s'\n", args[0]); 849 return; 850 } 851 852 n = kw_nargs(kw); 853 if (nargs < n) { 854 parse_error(state, "%s requires %d %s\n", args[0], n - 1, 855 n > 2 ? "arguments" : "argument"); 856 return; 857 } 858 cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); 859 cmd->func = kw_func(kw); 860 cmd->nargs = nargs; 861 memcpy(cmd->args, args, sizeof(char*) * nargs); 862 list_add_tail(&act->commands, &cmd->clist); 863 } 864
