init_parser.c revision acef650dbc11355f9792923b69d8277a4ce89fab
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 39static list_declare(service_list); 40static list_declare(action_list); 41static list_declare(action_queue); 42 43struct import { 44 struct listnode list; 45 const char *filename; 46}; 47 48static void *parse_service(struct parse_state *state, int nargs, char **args); 49static void parse_line_service(struct parse_state *state, int nargs, char **args); 50 51static void *parse_action(struct parse_state *state, int nargs, char **args); 52static 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 63struct { 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 79int 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, "ymlink")) return K_symlink; 155 if (!strcmp(s, "ysclktz")) return K_sysclktz; 156 break; 157 case 't': 158 if (!strcmp(s, "rigger")) return K_trigger; 159 break; 160 case 'u': 161 if (!strcmp(s, "ser")) return K_user; 162 break; 163 case 'w': 164 if (!strcmp(s, "rite")) return K_write; 165 if (!strcmp(s, "ait")) return K_wait; 166 break; 167 } 168 return K_UNKNOWN; 169} 170 171void parse_line_no_op(struct parse_state *state, int nargs, char **args) 172{ 173} 174 175static int push_chars(char **dst, int *len, const char *chars, int cnt) 176{ 177 if (cnt > *len) 178 return -1; 179 180 memcpy(*dst, chars, cnt); 181 *dst += cnt; 182 *len -= cnt; 183 184 return 0; 185} 186 187int expand_props(char *dst, const char *src, int dst_size) 188{ 189 int cnt = 0; 190 char *dst_ptr = dst; 191 const char *src_ptr = src; 192 int src_len; 193 int idx = 0; 194 int ret = 0; 195 int left = dst_size - 1; 196 197 if (!src || !dst || dst_size == 0) 198 return -1; 199 200 src_len = strlen(src); 201 202 /* - variables can either be $x.y or ${x.y}, in case they are only part 203 * of the string. 204 * - will accept $$ as a literal $. 205 * - no nested property expansion, i.e. ${foo.${bar}} is not supported, 206 * bad things will happen 207 */ 208 while (*src_ptr && left > 0) { 209 char *c; 210 char prop[PROP_NAME_MAX + 1]; 211 const char *prop_val; 212 int prop_len = 0; 213 214 c = strchr(src_ptr, '$'); 215 if (!c) { 216 while (left-- > 0 && *src_ptr) 217 *(dst_ptr++) = *(src_ptr++); 218 break; 219 } 220 221 memset(prop, 0, sizeof(prop)); 222 223 ret = push_chars(&dst_ptr, &left, src_ptr, c - src_ptr); 224 if (ret < 0) 225 goto err_nospace; 226 c++; 227 228 if (*c == '$') { 229 *(dst_ptr++) = *(c++); 230 src_ptr = c; 231 left--; 232 continue; 233 } else if (*c == '\0') { 234 break; 235 } 236 237 if (*c == '{') { 238 c++; 239 while (*c && *c != '}' && prop_len < PROP_NAME_MAX) 240 prop[prop_len++] = *(c++); 241 if (*c != '}') { 242 /* failed to find closing brace, abort. */ 243 if (prop_len == PROP_NAME_MAX) 244 ERROR("prop name too long during expansion of '%s'\n", 245 src); 246 else if (*c == '\0') 247 ERROR("unexpected end of string in '%s', looking for }\n", 248 src); 249 goto err; 250 } 251 prop[prop_len] = '\0'; 252 c++; 253 } else if (*c) { 254 while (*c && prop_len < PROP_NAME_MAX) 255 prop[prop_len++] = *(c++); 256 if (prop_len == PROP_NAME_MAX && *c != '\0') { 257 ERROR("prop name too long in '%s'\n", src); 258 goto err; 259 } 260 prop[prop_len] = '\0'; 261 ERROR("using deprecated syntax for specifying property '%s', use ${name} instead\n", 262 prop); 263 } 264 265 if (prop_len == 0) { 266 ERROR("invalid zero-length prop name in '%s'\n", src); 267 goto err; 268 } 269 270 prop_val = property_get(prop); 271 if (!prop_val) { 272 ERROR("property '%s' doesn't exist while expanding '%s'\n", 273 prop, src); 274 goto err; 275 } 276 277 ret = push_chars(&dst_ptr, &left, prop_val, strlen(prop_val)); 278 if (ret < 0) 279 goto err_nospace; 280 src_ptr = c; 281 continue; 282 } 283 284 *dst_ptr = '\0'; 285 return 0; 286 287err_nospace: 288 ERROR("destination buffer overflow while expanding '%s'\n", src); 289err: 290 return -1; 291} 292 293void parse_import(struct parse_state *state, int nargs, char **args) 294{ 295 struct listnode *import_list = state->priv; 296 struct import *import; 297 char conf_file[PATH_MAX]; 298 int ret; 299 300 if (nargs != 2) { 301 ERROR("single argument needed for import\n"); 302 return; 303 } 304 305 ret = expand_props(conf_file, args[1], sizeof(conf_file)); 306 if (ret) { 307 ERROR("error while handling import on line '%d' in '%s'\n", 308 state->line, state->filename); 309 return; 310 } 311 312 import = calloc(1, sizeof(struct import)); 313 import->filename = strdup(conf_file); 314 list_add_tail(import_list, &import->list); 315 INFO("found import '%s', adding to import list", import->filename); 316} 317 318void parse_new_section(struct parse_state *state, int kw, 319 int nargs, char **args) 320{ 321 printf("[ %s %s ]\n", args[0], 322 nargs > 1 ? args[1] : ""); 323 switch(kw) { 324 case K_service: 325 state->context = parse_service(state, nargs, args); 326 if (state->context) { 327 state->parse_line = parse_line_service; 328 return; 329 } 330 break; 331 case K_on: 332 state->context = parse_action(state, nargs, args); 333 if (state->context) { 334 state->parse_line = parse_line_action; 335 return; 336 } 337 break; 338 case K_import: 339 parse_import(state, nargs, args); 340 break; 341 } 342 state->parse_line = parse_line_no_op; 343} 344 345static void parse_config(const char *fn, char *s) 346{ 347 struct parse_state state; 348 struct listnode import_list; 349 struct listnode *node; 350 char *args[INIT_PARSER_MAXARGS]; 351 int nargs; 352 353 nargs = 0; 354 state.filename = fn; 355 state.line = 0; 356 state.ptr = s; 357 state.nexttoken = 0; 358 state.parse_line = parse_line_no_op; 359 360 list_init(&import_list); 361 state.priv = &import_list; 362 363 for (;;) { 364 switch (next_token(&state)) { 365 case T_EOF: 366 state.parse_line(&state, 0, 0); 367 goto parser_done; 368 case T_NEWLINE: 369 state.line++; 370 if (nargs) { 371 int kw = lookup_keyword(args[0]); 372 if (kw_is(kw, SECTION)) { 373 state.parse_line(&state, 0, 0); 374 parse_new_section(&state, kw, nargs, args); 375 } else { 376 state.parse_line(&state, nargs, args); 377 } 378 nargs = 0; 379 } 380 break; 381 case T_TEXT: 382 if (nargs < INIT_PARSER_MAXARGS) { 383 args[nargs++] = state.text; 384 } 385 break; 386 } 387 } 388 389parser_done: 390 list_for_each(node, &import_list) { 391 struct import *import = node_to_item(node, struct import, list); 392 int ret; 393 394 INFO("importing '%s'", import->filename); 395 ret = init_parse_config_file(import->filename); 396 if (ret) 397 ERROR("could not import file '%s' from '%s'\n", 398 import->filename, fn); 399 } 400} 401 402int init_parse_config_file(const char *fn) 403{ 404 char *data; 405 data = read_file(fn, 0); 406 if (!data) return -1; 407 408 parse_config(fn, data); 409 DUMP(); 410 return 0; 411} 412 413static int valid_name(const char *name) 414{ 415 if (strlen(name) > 16) { 416 return 0; 417 } 418 while (*name) { 419 if (!isalnum(*name) && (*name != '_') && (*name != '-')) { 420 return 0; 421 } 422 name++; 423 } 424 return 1; 425} 426 427struct service *service_find_by_name(const char *name) 428{ 429 struct listnode *node; 430 struct service *svc; 431 list_for_each(node, &service_list) { 432 svc = node_to_item(node, struct service, slist); 433 if (!strcmp(svc->name, name)) { 434 return svc; 435 } 436 } 437 return 0; 438} 439 440struct service *service_find_by_pid(pid_t pid) 441{ 442 struct listnode *node; 443 struct service *svc; 444 list_for_each(node, &service_list) { 445 svc = node_to_item(node, struct service, slist); 446 if (svc->pid == pid) { 447 return svc; 448 } 449 } 450 return 0; 451} 452 453struct service *service_find_by_keychord(int keychord_id) 454{ 455 struct listnode *node; 456 struct service *svc; 457 list_for_each(node, &service_list) { 458 svc = node_to_item(node, struct service, slist); 459 if (svc->keychord_id == keychord_id) { 460 return svc; 461 } 462 } 463 return 0; 464} 465 466void service_for_each(void (*func)(struct service *svc)) 467{ 468 struct listnode *node; 469 struct service *svc; 470 list_for_each(node, &service_list) { 471 svc = node_to_item(node, struct service, slist); 472 func(svc); 473 } 474} 475 476void service_for_each_class(const char *classname, 477 void (*func)(struct service *svc)) 478{ 479 struct listnode *node; 480 struct service *svc; 481 list_for_each(node, &service_list) { 482 svc = node_to_item(node, struct service, slist); 483 if (!strcmp(svc->classname, classname)) { 484 func(svc); 485 } 486 } 487} 488 489void service_for_each_flags(unsigned matchflags, 490 void (*func)(struct service *svc)) 491{ 492 struct listnode *node; 493 struct service *svc; 494 list_for_each(node, &service_list) { 495 svc = node_to_item(node, struct service, slist); 496 if (svc->flags & matchflags) { 497 func(svc); 498 } 499 } 500} 501 502void action_for_each_trigger(const char *trigger, 503 void (*func)(struct action *act)) 504{ 505 struct listnode *node; 506 struct action *act; 507 list_for_each(node, &action_list) { 508 act = node_to_item(node, struct action, alist); 509 if (!strcmp(act->name, trigger)) { 510 func(act); 511 } 512 } 513} 514 515void queue_property_triggers(const char *name, const char *value) 516{ 517 struct listnode *node; 518 struct action *act; 519 list_for_each(node, &action_list) { 520 act = node_to_item(node, struct action, alist); 521 if (!strncmp(act->name, "property:", strlen("property:"))) { 522 const char *test = act->name + strlen("property:"); 523 int name_length = strlen(name); 524 525 if (!strncmp(name, test, name_length) && 526 test[name_length] == '=' && 527 (!strcmp(test + name_length + 1, value) || 528 !strcmp(test + name_length + 1, "*"))) { 529 action_add_queue_tail(act); 530 } 531 } 532 } 533} 534 535void queue_all_property_triggers() 536{ 537 struct listnode *node; 538 struct action *act; 539 list_for_each(node, &action_list) { 540 act = node_to_item(node, struct action, alist); 541 if (!strncmp(act->name, "property:", strlen("property:"))) { 542 /* parse property name and value 543 syntax is property:<name>=<value> */ 544 const char* name = act->name + strlen("property:"); 545 const char* equals = strchr(name, '='); 546 if (equals) { 547 char prop_name[PROP_NAME_MAX + 1]; 548 const char* value; 549 int length = equals - name; 550 if (length > PROP_NAME_MAX) { 551 ERROR("property name too long in trigger %s", act->name); 552 } else { 553 memcpy(prop_name, name, length); 554 prop_name[length] = 0; 555 556 /* does the property exist, and match the trigger value? */ 557 value = property_get(prop_name); 558 if (value && (!strcmp(equals + 1, value) || 559 !strcmp(equals + 1, "*"))) { 560 action_add_queue_tail(act); 561 } 562 } 563 } 564 } 565 } 566} 567 568void queue_builtin_action(int (*func)(int nargs, char **args), char *name) 569{ 570 struct action *act; 571 struct command *cmd; 572 573 act = calloc(1, sizeof(*act)); 574 act->name = name; 575 list_init(&act->commands); 576 list_init(&act->qlist); 577 578 cmd = calloc(1, sizeof(*cmd)); 579 cmd->func = func; 580 cmd->args[0] = name; 581 list_add_tail(&act->commands, &cmd->clist); 582 583 list_add_tail(&action_list, &act->alist); 584 action_add_queue_tail(act); 585} 586 587void action_add_queue_tail(struct action *act) 588{ 589 if (list_empty(&act->qlist)) { 590 list_add_tail(&action_queue, &act->qlist); 591 } 592} 593 594struct action *action_remove_queue_head(void) 595{ 596 if (list_empty(&action_queue)) { 597 return 0; 598 } else { 599 struct listnode *node = list_head(&action_queue); 600 struct action *act = node_to_item(node, struct action, qlist); 601 list_remove(node); 602 list_init(node); 603 return act; 604 } 605} 606 607int action_queue_empty() 608{ 609 return list_empty(&action_queue); 610} 611 612static void *parse_service(struct parse_state *state, int nargs, char **args) 613{ 614 struct service *svc; 615 if (nargs < 3) { 616 parse_error(state, "services must have a name and a program\n"); 617 return 0; 618 } 619 if (!valid_name(args[1])) { 620 parse_error(state, "invalid service name '%s'\n", args[1]); 621 return 0; 622 } 623 624 svc = service_find_by_name(args[1]); 625 if (svc) { 626 parse_error(state, "ignored duplicate definition of service '%s'\n", args[1]); 627 return 0; 628 } 629 630 nargs -= 2; 631 svc = calloc(1, sizeof(*svc) + sizeof(char*) * nargs); 632 if (!svc) { 633 parse_error(state, "out of memory\n"); 634 return 0; 635 } 636 svc->name = args[1]; 637 svc->classname = "default"; 638 memcpy(svc->args, args + 2, sizeof(char*) * nargs); 639 svc->args[nargs] = 0; 640 svc->nargs = nargs; 641 svc->onrestart.name = "onrestart"; 642 list_init(&svc->onrestart.commands); 643 list_add_tail(&service_list, &svc->slist); 644 return svc; 645} 646 647static void parse_line_service(struct parse_state *state, int nargs, char **args) 648{ 649 struct service *svc = state->context; 650 struct command *cmd; 651 int i, kw, kw_nargs; 652 653 if (nargs == 0) { 654 return; 655 } 656 657 svc->ioprio_class = IoSchedClass_NONE; 658 659 kw = lookup_keyword(args[0]); 660 switch (kw) { 661 case K_capability: 662 break; 663 case K_class: 664 if (nargs != 2) { 665 parse_error(state, "class option requires a classname\n"); 666 } else { 667 svc->classname = args[1]; 668 } 669 break; 670 case K_console: 671 svc->flags |= SVC_CONSOLE; 672 break; 673 case K_disabled: 674 svc->flags |= SVC_DISABLED; 675 svc->flags |= SVC_RC_DISABLED; 676 break; 677 case K_ioprio: 678 if (nargs != 3) { 679 parse_error(state, "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n"); 680 } else { 681 svc->ioprio_pri = strtoul(args[2], 0, 8); 682 683 if (svc->ioprio_pri < 0 || svc->ioprio_pri > 7) { 684 parse_error(state, "priority value must be range 0 - 7\n"); 685 break; 686 } 687 688 if (!strcmp(args[1], "rt")) { 689 svc->ioprio_class = IoSchedClass_RT; 690 } else if (!strcmp(args[1], "be")) { 691 svc->ioprio_class = IoSchedClass_BE; 692 } else if (!strcmp(args[1], "idle")) { 693 svc->ioprio_class = IoSchedClass_IDLE; 694 } else { 695 parse_error(state, "ioprio option usage: ioprio <rt|be|idle> <0-7>\n"); 696 } 697 } 698 break; 699 case K_group: 700 if (nargs < 2) { 701 parse_error(state, "group option requires a group id\n"); 702 } else if (nargs > NR_SVC_SUPP_GIDS + 2) { 703 parse_error(state, "group option accepts at most %d supp. groups\n", 704 NR_SVC_SUPP_GIDS); 705 } else { 706 int n; 707 svc->gid = decode_uid(args[1]); 708 for (n = 2; n < nargs; n++) { 709 svc->supp_gids[n-2] = decode_uid(args[n]); 710 } 711 svc->nr_supp_gids = n - 2; 712 } 713 break; 714 case K_keycodes: 715 if (nargs < 2) { 716 parse_error(state, "keycodes option requires atleast one keycode\n"); 717 } else { 718 svc->keycodes = malloc((nargs - 1) * sizeof(svc->keycodes[0])); 719 if (!svc->keycodes) { 720 parse_error(state, "could not allocate keycodes\n"); 721 } else { 722 svc->nkeycodes = nargs - 1; 723 for (i = 1; i < nargs; i++) { 724 svc->keycodes[i - 1] = atoi(args[i]); 725 } 726 } 727 } 728 break; 729 case K_oneshot: 730 svc->flags |= SVC_ONESHOT; 731 break; 732 case K_onrestart: 733 nargs--; 734 args++; 735 kw = lookup_keyword(args[0]); 736 if (!kw_is(kw, COMMAND)) { 737 parse_error(state, "invalid command '%s'\n", args[0]); 738 break; 739 } 740 kw_nargs = kw_nargs(kw); 741 if (nargs < kw_nargs) { 742 parse_error(state, "%s requires %d %s\n", args[0], kw_nargs - 1, 743 kw_nargs > 2 ? "arguments" : "argument"); 744 break; 745 } 746 747 cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); 748 cmd->func = kw_func(kw); 749 cmd->nargs = nargs; 750 memcpy(cmd->args, args, sizeof(char*) * nargs); 751 list_add_tail(&svc->onrestart.commands, &cmd->clist); 752 break; 753 case K_critical: 754 svc->flags |= SVC_CRITICAL; 755 break; 756 case K_setenv: { /* name value */ 757 struct svcenvinfo *ei; 758 if (nargs < 2) { 759 parse_error(state, "setenv option requires name and value arguments\n"); 760 break; 761 } 762 ei = calloc(1, sizeof(*ei)); 763 if (!ei) { 764 parse_error(state, "out of memory\n"); 765 break; 766 } 767 ei->name = args[1]; 768 ei->value = args[2]; 769 ei->next = svc->envvars; 770 svc->envvars = ei; 771 break; 772 } 773 case K_socket: {/* name type perm [ uid gid ] */ 774 struct socketinfo *si; 775 if (nargs < 4) { 776 parse_error(state, "socket option requires name, type, perm arguments\n"); 777 break; 778 } 779 if (strcmp(args[2],"dgram") && strcmp(args[2],"stream") 780 && strcmp(args[2],"seqpacket")) { 781 parse_error(state, "socket type must be 'dgram', 'stream' or 'seqpacket'\n"); 782 break; 783 } 784 si = calloc(1, sizeof(*si)); 785 if (!si) { 786 parse_error(state, "out of memory\n"); 787 break; 788 } 789 si->name = args[1]; 790 si->type = args[2]; 791 si->perm = strtoul(args[3], 0, 8); 792 if (nargs > 4) 793 si->uid = decode_uid(args[4]); 794 if (nargs > 5) 795 si->gid = decode_uid(args[5]); 796 si->next = svc->sockets; 797 svc->sockets = si; 798 break; 799 } 800 case K_user: 801 if (nargs != 2) { 802 parse_error(state, "user option requires a user id\n"); 803 } else { 804 svc->uid = decode_uid(args[1]); 805 } 806 break; 807 case K_seclabel: 808 if (nargs != 2) { 809 parse_error(state, "seclabel option requires a label string\n"); 810 } else { 811 svc->seclabel = args[1]; 812 } 813 break; 814 815 default: 816 parse_error(state, "invalid option '%s'\n", args[0]); 817 } 818} 819 820static void *parse_action(struct parse_state *state, int nargs, char **args) 821{ 822 struct action *act; 823 if (nargs < 2) { 824 parse_error(state, "actions must have a trigger\n"); 825 return 0; 826 } 827 if (nargs > 2) { 828 parse_error(state, "actions may not have extra parameters\n"); 829 return 0; 830 } 831 act = calloc(1, sizeof(*act)); 832 act->name = args[1]; 833 list_init(&act->commands); 834 list_init(&act->qlist); 835 list_add_tail(&action_list, &act->alist); 836 /* XXX add to hash */ 837 return act; 838} 839 840static void parse_line_action(struct parse_state* state, int nargs, char **args) 841{ 842 struct command *cmd; 843 struct action *act = state->context; 844 int (*func)(int nargs, char **args); 845 int kw, n; 846 847 if (nargs == 0) { 848 return; 849 } 850 851 kw = lookup_keyword(args[0]); 852 if (!kw_is(kw, COMMAND)) { 853 parse_error(state, "invalid command '%s'\n", args[0]); 854 return; 855 } 856 857 n = kw_nargs(kw); 858 if (nargs < n) { 859 parse_error(state, "%s requires %d %s\n", args[0], n - 1, 860 n > 2 ? "arguments" : "argument"); 861 return; 862 } 863 cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); 864 cmd->func = kw_func(kw); 865 cmd->nargs = nargs; 866 memcpy(cmd->args, args, sizeof(char*) * nargs); 867 list_add_tail(&act->commands, &cmd->clist); 868} 869