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 'p': 134 if (!strcmp(s, "owerctl")) return K_powerctl; 135 case 'r': 136 if (!strcmp(s, "estart")) return K_restart; 137 if (!strcmp(s, "estorecon")) return K_restorecon; 138 if (!strcmp(s, "mdir")) return K_rmdir; 139 if (!strcmp(s, "m")) return K_rm; 140 break; 141 case 's': 142 if (!strcmp(s, "eclabel")) return K_seclabel; 143 if (!strcmp(s, "ervice")) return K_service; 144 if (!strcmp(s, "etcon")) return K_setcon; 145 if (!strcmp(s, "etenforce")) return K_setenforce; 146 if (!strcmp(s, "etenv")) return K_setenv; 147 if (!strcmp(s, "etkey")) return K_setkey; 148 if (!strcmp(s, "etprop")) return K_setprop; 149 if (!strcmp(s, "etrlimit")) return K_setrlimit; 150 if (!strcmp(s, "etsebool")) return K_setsebool; 151 if (!strcmp(s, "ocket")) return K_socket; 152 if (!strcmp(s, "tart")) return K_start; 153 if (!strcmp(s, "top")) return K_stop; 154 if (!strcmp(s, "wapon_all")) return K_swapon_all; 155 if (!strcmp(s, "ymlink")) return K_symlink; 156 if (!strcmp(s, "ysclktz")) return K_sysclktz; 157 break; 158 case 't': 159 if (!strcmp(s, "rigger")) return K_trigger; 160 break; 161 case 'u': 162 if (!strcmp(s, "ser")) return K_user; 163 break; 164 case 'w': 165 if (!strcmp(s, "rite")) return K_write; 166 if (!strcmp(s, "ait")) return K_wait; 167 break; 168 } 169 return K_UNKNOWN; 170 } 171 172 void parse_line_no_op(struct parse_state *state, int nargs, char **args) 173 { 174 } 175 176 static int push_chars(char **dst, int *len, const char *chars, int cnt) 177 { 178 if (cnt > *len) 179 return -1; 180 181 memcpy(*dst, chars, cnt); 182 *dst += cnt; 183 *len -= cnt; 184 185 return 0; 186 } 187 188 int expand_props(char *dst, const char *src, int dst_size) 189 { 190 int cnt = 0; 191 char *dst_ptr = dst; 192 const char *src_ptr = src; 193 int src_len; 194 int idx = 0; 195 int ret = 0; 196 int left = dst_size - 1; 197 198 if (!src || !dst || dst_size == 0) 199 return -1; 200 201 src_len = strlen(src); 202 203 /* - variables can either be $x.y or ${x.y}, in case they are only part 204 * of the string. 205 * - will accept $$ as a literal $. 206 * - no nested property expansion, i.e. ${foo.${bar}} is not supported, 207 * bad things will happen 208 */ 209 while (*src_ptr && left > 0) { 210 char *c; 211 char prop[PROP_NAME_MAX + 1]; 212 char prop_val[PROP_VALUE_MAX]; 213 int prop_len = 0; 214 int prop_val_len; 215 216 c = strchr(src_ptr, '$'); 217 if (!c) { 218 while (left-- > 0 && *src_ptr) 219 *(dst_ptr++) = *(src_ptr++); 220 break; 221 } 222 223 memset(prop, 0, sizeof(prop)); 224 225 ret = push_chars(&dst_ptr, &left, src_ptr, c - src_ptr); 226 if (ret < 0) 227 goto err_nospace; 228 c++; 229 230 if (*c == '$') { 231 *(dst_ptr++) = *(c++); 232 src_ptr = c; 233 left--; 234 continue; 235 } else if (*c == '\0') { 236 break; 237 } 238 239 if (*c == '{') { 240 c++; 241 while (*c && *c != '}' && prop_len < PROP_NAME_MAX) 242 prop[prop_len++] = *(c++); 243 if (*c != '}') { 244 /* failed to find closing brace, abort. */ 245 if (prop_len == PROP_NAME_MAX) 246 ERROR("prop name too long during expansion of '%s'\n", 247 src); 248 else if (*c == '\0') 249 ERROR("unexpected end of string in '%s', looking for }\n", 250 src); 251 goto err; 252 } 253 prop[prop_len] = '\0'; 254 c++; 255 } else if (*c) { 256 while (*c && prop_len < PROP_NAME_MAX) 257 prop[prop_len++] = *(c++); 258 if (prop_len == PROP_NAME_MAX && *c != '\0') { 259 ERROR("prop name too long in '%s'\n", src); 260 goto err; 261 } 262 prop[prop_len] = '\0'; 263 ERROR("using deprecated syntax for specifying property '%s', use ${name} instead\n", 264 prop); 265 } 266 267 if (prop_len == 0) { 268 ERROR("invalid zero-length prop name in '%s'\n", src); 269 goto err; 270 } 271 272 prop_val_len = property_get(prop, prop_val); 273 if (!prop_val_len) { 274 ERROR("property '%s' doesn't exist while expanding '%s'\n", 275 prop, src); 276 goto err; 277 } 278 279 ret = push_chars(&dst_ptr, &left, prop_val, prop_val_len); 280 if (ret < 0) 281 goto err_nospace; 282 src_ptr = c; 283 continue; 284 } 285 286 *dst_ptr = '\0'; 287 return 0; 288 289 err_nospace: 290 ERROR("destination buffer overflow while expanding '%s'\n", src); 291 err: 292 return -1; 293 } 294 295 void parse_import(struct parse_state *state, int nargs, char **args) 296 { 297 struct listnode *import_list = state->priv; 298 struct import *import; 299 char conf_file[PATH_MAX]; 300 int ret; 301 302 if (nargs != 2) { 303 ERROR("single argument needed for import\n"); 304 return; 305 } 306 307 ret = expand_props(conf_file, args[1], sizeof(conf_file)); 308 if (ret) { 309 ERROR("error while handling import on line '%d' in '%s'\n", 310 state->line, state->filename); 311 return; 312 } 313 314 import = calloc(1, sizeof(struct import)); 315 import->filename = strdup(conf_file); 316 list_add_tail(import_list, &import->list); 317 INFO("found import '%s', adding to import list", import->filename); 318 } 319 320 void parse_new_section(struct parse_state *state, int kw, 321 int nargs, char **args) 322 { 323 printf("[ %s %s ]\n", args[0], 324 nargs > 1 ? args[1] : ""); 325 switch(kw) { 326 case K_service: 327 state->context = parse_service(state, nargs, args); 328 if (state->context) { 329 state->parse_line = parse_line_service; 330 return; 331 } 332 break; 333 case K_on: 334 state->context = parse_action(state, nargs, args); 335 if (state->context) { 336 state->parse_line = parse_line_action; 337 return; 338 } 339 break; 340 case K_import: 341 parse_import(state, nargs, args); 342 break; 343 } 344 state->parse_line = parse_line_no_op; 345 } 346 347 static void parse_config(const char *fn, char *s) 348 { 349 struct parse_state state; 350 struct listnode import_list; 351 struct listnode *node; 352 char *args[INIT_PARSER_MAXARGS]; 353 int nargs; 354 355 nargs = 0; 356 state.filename = fn; 357 state.line = 0; 358 state.ptr = s; 359 state.nexttoken = 0; 360 state.parse_line = parse_line_no_op; 361 362 list_init(&import_list); 363 state.priv = &import_list; 364 365 for (;;) { 366 switch (next_token(&state)) { 367 case T_EOF: 368 state.parse_line(&state, 0, 0); 369 goto parser_done; 370 case T_NEWLINE: 371 state.line++; 372 if (nargs) { 373 int kw = lookup_keyword(args[0]); 374 if (kw_is(kw, SECTION)) { 375 state.parse_line(&state, 0, 0); 376 parse_new_section(&state, kw, nargs, args); 377 } else { 378 state.parse_line(&state, nargs, args); 379 } 380 nargs = 0; 381 } 382 break; 383 case T_TEXT: 384 if (nargs < INIT_PARSER_MAXARGS) { 385 args[nargs++] = state.text; 386 } 387 break; 388 } 389 } 390 391 parser_done: 392 list_for_each(node, &import_list) { 393 struct import *import = node_to_item(node, struct import, list); 394 int ret; 395 396 INFO("importing '%s'", import->filename); 397 ret = init_parse_config_file(import->filename); 398 if (ret) 399 ERROR("could not import file '%s' from '%s'\n", 400 import->filename, fn); 401 } 402 } 403 404 int init_parse_config_file(const char *fn) 405 { 406 char *data; 407 data = read_file(fn, 0); 408 if (!data) return -1; 409 410 parse_config(fn, data); 411 DUMP(); 412 return 0; 413 } 414 415 static int valid_name(const char *name) 416 { 417 if (strlen(name) > 16) { 418 return 0; 419 } 420 while (*name) { 421 if (!isalnum(*name) && (*name != '_') && (*name != '-')) { 422 return 0; 423 } 424 name++; 425 } 426 return 1; 427 } 428 429 struct service *service_find_by_name(const char *name) 430 { 431 struct listnode *node; 432 struct service *svc; 433 list_for_each(node, &service_list) { 434 svc = node_to_item(node, struct service, slist); 435 if (!strcmp(svc->name, name)) { 436 return svc; 437 } 438 } 439 return 0; 440 } 441 442 struct service *service_find_by_pid(pid_t pid) 443 { 444 struct listnode *node; 445 struct service *svc; 446 list_for_each(node, &service_list) { 447 svc = node_to_item(node, struct service, slist); 448 if (svc->pid == pid) { 449 return svc; 450 } 451 } 452 return 0; 453 } 454 455 struct service *service_find_by_keychord(int keychord_id) 456 { 457 struct listnode *node; 458 struct service *svc; 459 list_for_each(node, &service_list) { 460 svc = node_to_item(node, struct service, slist); 461 if (svc->keychord_id == keychord_id) { 462 return svc; 463 } 464 } 465 return 0; 466 } 467 468 void service_for_each(void (*func)(struct service *svc)) 469 { 470 struct listnode *node; 471 struct service *svc; 472 list_for_each(node, &service_list) { 473 svc = node_to_item(node, struct service, slist); 474 func(svc); 475 } 476 } 477 478 void service_for_each_class(const char *classname, 479 void (*func)(struct service *svc)) 480 { 481 struct listnode *node; 482 struct service *svc; 483 list_for_each(node, &service_list) { 484 svc = node_to_item(node, struct service, slist); 485 if (!strcmp(svc->classname, classname)) { 486 func(svc); 487 } 488 } 489 } 490 491 void service_for_each_flags(unsigned matchflags, 492 void (*func)(struct service *svc)) 493 { 494 struct listnode *node; 495 struct service *svc; 496 list_for_each(node, &service_list) { 497 svc = node_to_item(node, struct service, slist); 498 if (svc->flags & matchflags) { 499 func(svc); 500 } 501 } 502 } 503 504 void action_for_each_trigger(const char *trigger, 505 void (*func)(struct action *act)) 506 { 507 struct listnode *node; 508 struct action *act; 509 list_for_each(node, &action_list) { 510 act = node_to_item(node, struct action, alist); 511 if (!strcmp(act->name, trigger)) { 512 func(act); 513 } 514 } 515 } 516 517 void queue_property_triggers(const char *name, const char *value) 518 { 519 struct listnode *node; 520 struct action *act; 521 list_for_each(node, &action_list) { 522 act = node_to_item(node, struct action, alist); 523 if (!strncmp(act->name, "property:", strlen("property:"))) { 524 const char *test = act->name + strlen("property:"); 525 int name_length = strlen(name); 526 527 if (!strncmp(name, test, name_length) && 528 test[name_length] == '=' && 529 (!strcmp(test + name_length + 1, value) || 530 !strcmp(test + name_length + 1, "*"))) { 531 action_add_queue_tail(act); 532 } 533 } 534 } 535 } 536 537 void queue_all_property_triggers() 538 { 539 struct listnode *node; 540 struct action *act; 541 list_for_each(node, &action_list) { 542 act = node_to_item(node, struct action, alist); 543 if (!strncmp(act->name, "property:", strlen("property:"))) { 544 /* parse property name and value 545 syntax is property:<name>=<value> */ 546 const char* name = act->name + strlen("property:"); 547 const char* equals = strchr(name, '='); 548 if (equals) { 549 char prop_name[PROP_NAME_MAX + 1]; 550 char value[PROP_VALUE_MAX]; 551 int length = equals - name; 552 if (length > PROP_NAME_MAX) { 553 ERROR("property name too long in trigger %s", act->name); 554 } else { 555 memcpy(prop_name, name, length); 556 prop_name[length] = 0; 557 558 /* does the property exist, and match the trigger value? */ 559 property_get(prop_name, value); 560 if (!strcmp(equals + 1, value) ||!strcmp(equals + 1, "*")) { 561 action_add_queue_tail(act); 562 } 563 } 564 } 565 } 566 } 567 } 568 569 void queue_builtin_action(int (*func)(int nargs, char **args), char *name) 570 { 571 struct action *act; 572 struct command *cmd; 573 574 act = calloc(1, sizeof(*act)); 575 act->name = name; 576 list_init(&act->commands); 577 list_init(&act->qlist); 578 579 cmd = calloc(1, sizeof(*cmd)); 580 cmd->func = func; 581 cmd->args[0] = name; 582 list_add_tail(&act->commands, &cmd->clist); 583 584 list_add_tail(&action_list, &act->alist); 585 action_add_queue_tail(act); 586 } 587 588 void action_add_queue_tail(struct action *act) 589 { 590 if (list_empty(&act->qlist)) { 591 list_add_tail(&action_queue, &act->qlist); 592 } 593 } 594 595 struct action *action_remove_queue_head(void) 596 { 597 if (list_empty(&action_queue)) { 598 return 0; 599 } else { 600 struct listnode *node = list_head(&action_queue); 601 struct action *act = node_to_item(node, struct action, qlist); 602 list_remove(node); 603 list_init(node); 604 return act; 605 } 606 } 607 608 int action_queue_empty() 609 { 610 return list_empty(&action_queue); 611 } 612 613 static void *parse_service(struct parse_state *state, int nargs, char **args) 614 { 615 struct service *svc; 616 if (nargs < 3) { 617 parse_error(state, "services must have a name and a program\n"); 618 return 0; 619 } 620 if (!valid_name(args[1])) { 621 parse_error(state, "invalid service name '%s'\n", args[1]); 622 return 0; 623 } 624 625 svc = service_find_by_name(args[1]); 626 if (svc) { 627 parse_error(state, "ignored duplicate definition of service '%s'\n", args[1]); 628 return 0; 629 } 630 631 nargs -= 2; 632 svc = calloc(1, sizeof(*svc) + sizeof(char*) * nargs); 633 if (!svc) { 634 parse_error(state, "out of memory\n"); 635 return 0; 636 } 637 svc->name = args[1]; 638 svc->classname = "default"; 639 memcpy(svc->args, args + 2, sizeof(char*) * nargs); 640 svc->args[nargs] = 0; 641 svc->nargs = nargs; 642 svc->onrestart.name = "onrestart"; 643 list_init(&svc->onrestart.commands); 644 list_add_tail(&service_list, &svc->slist); 645 return svc; 646 } 647 648 static void parse_line_service(struct parse_state *state, int nargs, char **args) 649 { 650 struct service *svc = state->context; 651 struct command *cmd; 652 int i, kw, kw_nargs; 653 654 if (nargs == 0) { 655 return; 656 } 657 658 svc->ioprio_class = IoSchedClass_NONE; 659 660 kw = lookup_keyword(args[0]); 661 switch (kw) { 662 case K_capability: 663 break; 664 case K_class: 665 if (nargs != 2) { 666 parse_error(state, "class option requires a classname\n"); 667 } else { 668 svc->classname = args[1]; 669 } 670 break; 671 case K_console: 672 svc->flags |= SVC_CONSOLE; 673 break; 674 case K_disabled: 675 svc->flags |= SVC_DISABLED; 676 svc->flags |= SVC_RC_DISABLED; 677 break; 678 case K_ioprio: 679 if (nargs != 3) { 680 parse_error(state, "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n"); 681 } else { 682 svc->ioprio_pri = strtoul(args[2], 0, 8); 683 684 if (svc->ioprio_pri < 0 || svc->ioprio_pri > 7) { 685 parse_error(state, "priority value must be range 0 - 7\n"); 686 break; 687 } 688 689 if (!strcmp(args[1], "rt")) { 690 svc->ioprio_class = IoSchedClass_RT; 691 } else if (!strcmp(args[1], "be")) { 692 svc->ioprio_class = IoSchedClass_BE; 693 } else if (!strcmp(args[1], "idle")) { 694 svc->ioprio_class = IoSchedClass_IDLE; 695 } else { 696 parse_error(state, "ioprio option usage: ioprio <rt|be|idle> <0-7>\n"); 697 } 698 } 699 break; 700 case K_group: 701 if (nargs < 2) { 702 parse_error(state, "group option requires a group id\n"); 703 } else if (nargs > NR_SVC_SUPP_GIDS + 2) { 704 parse_error(state, "group option accepts at most %d supp. groups\n", 705 NR_SVC_SUPP_GIDS); 706 } else { 707 int n; 708 svc->gid = decode_uid(args[1]); 709 for (n = 2; n < nargs; n++) { 710 svc->supp_gids[n-2] = decode_uid(args[n]); 711 } 712 svc->nr_supp_gids = n - 2; 713 } 714 break; 715 case K_keycodes: 716 if (nargs < 2) { 717 parse_error(state, "keycodes option requires atleast one keycode\n"); 718 } else { 719 svc->keycodes = malloc((nargs - 1) * sizeof(svc->keycodes[0])); 720 if (!svc->keycodes) { 721 parse_error(state, "could not allocate keycodes\n"); 722 } else { 723 svc->nkeycodes = nargs - 1; 724 for (i = 1; i < nargs; i++) { 725 svc->keycodes[i - 1] = atoi(args[i]); 726 } 727 } 728 } 729 break; 730 case K_oneshot: 731 svc->flags |= SVC_ONESHOT; 732 break; 733 case K_onrestart: 734 nargs--; 735 args++; 736 kw = lookup_keyword(args[0]); 737 if (!kw_is(kw, COMMAND)) { 738 parse_error(state, "invalid command '%s'\n", args[0]); 739 break; 740 } 741 kw_nargs = kw_nargs(kw); 742 if (nargs < kw_nargs) { 743 parse_error(state, "%s requires %d %s\n", args[0], kw_nargs - 1, 744 kw_nargs > 2 ? "arguments" : "argument"); 745 break; 746 } 747 748 cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); 749 cmd->func = kw_func(kw); 750 cmd->nargs = nargs; 751 memcpy(cmd->args, args, sizeof(char*) * nargs); 752 list_add_tail(&svc->onrestart.commands, &cmd->clist); 753 break; 754 case K_critical: 755 svc->flags |= SVC_CRITICAL; 756 break; 757 case K_setenv: { /* name value */ 758 struct svcenvinfo *ei; 759 if (nargs < 2) { 760 parse_error(state, "setenv option requires name and value arguments\n"); 761 break; 762 } 763 ei = calloc(1, sizeof(*ei)); 764 if (!ei) { 765 parse_error(state, "out of memory\n"); 766 break; 767 } 768 ei->name = args[1]; 769 ei->value = args[2]; 770 ei->next = svc->envvars; 771 svc->envvars = ei; 772 break; 773 } 774 case K_socket: {/* name type perm [ uid gid ] */ 775 struct socketinfo *si; 776 if (nargs < 4) { 777 parse_error(state, "socket option requires name, type, perm arguments\n"); 778 break; 779 } 780 if (strcmp(args[2],"dgram") && strcmp(args[2],"stream") 781 && strcmp(args[2],"seqpacket")) { 782 parse_error(state, "socket type must be 'dgram', 'stream' or 'seqpacket'\n"); 783 break; 784 } 785 si = calloc(1, sizeof(*si)); 786 if (!si) { 787 parse_error(state, "out of memory\n"); 788 break; 789 } 790 si->name = args[1]; 791 si->type = args[2]; 792 si->perm = strtoul(args[3], 0, 8); 793 if (nargs > 4) 794 si->uid = decode_uid(args[4]); 795 if (nargs > 5) 796 si->gid = decode_uid(args[5]); 797 si->next = svc->sockets; 798 svc->sockets = si; 799 break; 800 } 801 case K_user: 802 if (nargs != 2) { 803 parse_error(state, "user option requires a user id\n"); 804 } else { 805 svc->uid = decode_uid(args[1]); 806 } 807 break; 808 case K_seclabel: 809 if (nargs != 2) { 810 parse_error(state, "seclabel option requires a label string\n"); 811 } else { 812 svc->seclabel = args[1]; 813 } 814 break; 815 816 default: 817 parse_error(state, "invalid option '%s'\n", args[0]); 818 } 819 } 820 821 static void *parse_action(struct parse_state *state, int nargs, char **args) 822 { 823 struct action *act; 824 if (nargs < 2) { 825 parse_error(state, "actions must have a trigger\n"); 826 return 0; 827 } 828 if (nargs > 2) { 829 parse_error(state, "actions may not have extra parameters\n"); 830 return 0; 831 } 832 act = calloc(1, sizeof(*act)); 833 act->name = args[1]; 834 list_init(&act->commands); 835 list_init(&act->qlist); 836 list_add_tail(&action_list, &act->alist); 837 /* XXX add to hash */ 838 return act; 839 } 840 841 static void parse_line_action(struct parse_state* state, int nargs, char **args) 842 { 843 struct command *cmd; 844 struct action *act = state->context; 845 int (*func)(int nargs, char **args); 846 int kw, n; 847 848 if (nargs == 0) { 849 return; 850 } 851 852 kw = lookup_keyword(args[0]); 853 if (!kw_is(kw, COMMAND)) { 854 parse_error(state, "invalid command '%s'\n", args[0]); 855 return; 856 } 857 858 n = kw_nargs(kw); 859 if (nargs < n) { 860 parse_error(state, "%s requires %d %s\n", args[0], n - 1, 861 n > 2 ? "arguments" : "argument"); 862 return; 863 } 864 cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); 865 cmd->func = kw_func(kw); 866 cmd->nargs = nargs; 867 memcpy(cmd->args, args, sizeof(char*) * nargs); 868 list_add_tail(&act->commands, &cmd->clist); 869 } 870
