diff options
Diffstat (limited to 'init/parser.c')
| -rw-r--r-- | init/parser.c | 650 |
1 files changed, 3 insertions, 647 deletions
diff --git a/init/parser.c b/init/parser.c index 7da0d19..2f36ac7 100644 --- a/init/parser.c +++ b/init/parser.c @@ -1,23 +1,10 @@ #include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> #include <stdarg.h> #include <string.h> -#include <stddef.h> -#include <ctype.h> -#include "init.h" -#include "property_service.h" - -#include <cutils/iosched_policy.h> - -#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_ -#include <sys/_system_properties.h> - -static list_declare(service_list); -static list_declare(action_list); -static list_declare(action_queue); +#include "parser.h" +#include "list.h" +#include "log.h" #define RAW(x...) log_write(6, x) @@ -62,27 +49,6 @@ void DUMP(void) #endif } -#define T_EOF 0 -#define T_TEXT 1 -#define T_NEWLINE 2 - -struct parse_state -{ - char *ptr; - char *text; - int line; - int nexttoken; - void *context; - void (*parse_line)(struct parse_state *state, int nargs, char **args); - const char *filename; -}; - -static void *parse_service(struct parse_state *state, int nargs, char **args); -static void parse_line_service(struct parse_state *state, int nargs, char **args); - -static void *parse_action(struct parse_state *state, int nargs, char **args); -static void parse_line_action(struct parse_state *state, int nargs, char **args); - void parse_error(struct parse_state *state, const char *fmt, ...) { va_list ap; @@ -100,115 +66,6 @@ void parse_error(struct parse_state *state, const char *fmt, ...) ERROR("%s", buf); } -#define SECTION 0x01 -#define COMMAND 0x02 -#define OPTION 0x04 - -#include "keywords.h" - -#define KEYWORD(symbol, flags, nargs, func) \ - [ K_##symbol ] = { #symbol, func, nargs + 1, flags, }, - -struct { - const char *name; - int (*func)(int nargs, char **args); - unsigned char nargs; - unsigned char flags; -} keyword_info[KEYWORD_COUNT] = { - [ K_UNKNOWN ] = { "unknown", 0, 0, 0 }, -#include "keywords.h" -}; -#undef KEYWORD - -#define kw_is(kw, type) (keyword_info[kw].flags & (type)) -#define kw_name(kw) (keyword_info[kw].name) -#define kw_func(kw) (keyword_info[kw].func) -#define kw_nargs(kw) (keyword_info[kw].nargs) - -int lookup_keyword(const char *s) -{ - switch (*s++) { - case 'c': - if (!strcmp(s, "opy")) return K_copy; - if (!strcmp(s, "apability")) return K_capability; - if (!strcmp(s, "hdir")) return K_chdir; - if (!strcmp(s, "hroot")) return K_chroot; - if (!strcmp(s, "lass")) return K_class; - if (!strcmp(s, "lass_start")) return K_class_start; - if (!strcmp(s, "lass_stop")) return K_class_stop; - if (!strcmp(s, "onsole")) return K_console; - if (!strcmp(s, "hown")) return K_chown; - if (!strcmp(s, "hmod")) return K_chmod; - if (!strcmp(s, "ritical")) return K_critical; - break; - case 'd': - if (!strcmp(s, "isabled")) return K_disabled; - if (!strcmp(s, "omainname")) return K_domainname; - if (!strcmp(s, "evice")) return K_device; - break; - case 'e': - if (!strcmp(s, "xec")) return K_exec; - if (!strcmp(s, "xport")) return K_export; - break; - case 'g': - if (!strcmp(s, "roup")) return K_group; - break; - case 'h': - if (!strcmp(s, "ostname")) return K_hostname; - break; - case 'i': - if (!strcmp(s, "oprio")) return K_ioprio; - if (!strcmp(s, "fup")) return K_ifup; - if (!strcmp(s, "nsmod")) return K_insmod; - if (!strcmp(s, "mport")) return K_import; - break; - case 'k': - if (!strcmp(s, "eycodes")) return K_keycodes; - break; - case 'l': - if (!strcmp(s, "oglevel")) return K_loglevel; - break; - case 'm': - if (!strcmp(s, "kdir")) return K_mkdir; - if (!strcmp(s, "ount")) return K_mount; - break; - case 'o': - if (!strcmp(s, "n")) return K_on; - if (!strcmp(s, "neshot")) return K_oneshot; - if (!strcmp(s, "nrestart")) return K_onrestart; - break; - case 'r': - if (!strcmp(s, "estart")) return K_restart; - break; - case 's': - if (!strcmp(s, "ervice")) return K_service; - if (!strcmp(s, "etenv")) return K_setenv; - if (!strcmp(s, "etkey")) return K_setkey; - if (!strcmp(s, "etprop")) return K_setprop; - if (!strcmp(s, "etrlimit")) return K_setrlimit; - if (!strcmp(s, "ocket")) return K_socket; - if (!strcmp(s, "tart")) return K_start; - if (!strcmp(s, "top")) return K_stop; - if (!strcmp(s, "ymlink")) return K_symlink; - if (!strcmp(s, "ysclktz")) return K_sysclktz; - break; - case 't': - if (!strcmp(s, "rigger")) return K_trigger; - break; - case 'u': - if (!strcmp(s, "ser")) return K_user; - break; - case 'w': - if (!strcmp(s, "rite")) return K_write; - break; - } - return K_UNKNOWN; -} - -void parse_line_no_op(struct parse_state *state, int nargs, char **args) -{ -} - int next_token(struct parse_state *state) { char *x = state->ptr; @@ -322,504 +179,3 @@ textresume: } return T_EOF; } - -void parse_line(int nargs, char **args) -{ - int n; - int id = lookup_keyword(args[0]); - printf("%s(%d)", args[0], id); - for (n = 1; n < nargs; n++) { - printf(" '%s'", args[n]); - } - printf("\n"); -} - -void parse_new_section(struct parse_state *state, int kw, - int nargs, char **args) -{ - printf("[ %s %s ]\n", args[0], - nargs > 1 ? args[1] : ""); - switch(kw) { - case K_service: - state->context = parse_service(state, nargs, args); - if (state->context) { - state->parse_line = parse_line_service; - return; - } - break; - case K_on: - state->context = parse_action(state, nargs, args); - if (state->context) { - state->parse_line = parse_line_action; - return; - } - break; - } - state->parse_line = parse_line_no_op; -} - -static void parse_config(const char *fn, char *s) -{ - struct parse_state state; - char *args[SVC_MAXARGS]; - int nargs; - - nargs = 0; - state.filename = fn; - state.line = 1; - state.ptr = s; - state.nexttoken = 0; - state.parse_line = parse_line_no_op; - for (;;) { - switch (next_token(&state)) { - case T_EOF: - state.parse_line(&state, 0, 0); - return; - case T_NEWLINE: - if (nargs) { - int kw = lookup_keyword(args[0]); - if (kw_is(kw, SECTION)) { - state.parse_line(&state, 0, 0); - parse_new_section(&state, kw, nargs, args); - } else { - state.parse_line(&state, nargs, args); - } - nargs = 0; - } - break; - case T_TEXT: - if (nargs < SVC_MAXARGS) { - args[nargs++] = state.text; - } - break; - } - } -} - -int parse_config_file(const char *fn) -{ - char *data; - data = read_file(fn, 0); - if (!data) return -1; - - parse_config(fn, data); - DUMP(); - return 0; -} - -static int valid_name(const char *name) -{ - if (strlen(name) > 16) { - return 0; - } - while (*name) { - if (!isalnum(*name) && (*name != '_') && (*name != '-')) { - return 0; - } - name++; - } - return 1; -} - -struct service *service_find_by_name(const char *name) -{ - struct listnode *node; - struct service *svc; - list_for_each(node, &service_list) { - svc = node_to_item(node, struct service, slist); - if (!strcmp(svc->name, name)) { - return svc; - } - } - return 0; -} - -struct service *service_find_by_pid(pid_t pid) -{ - struct listnode *node; - struct service *svc; - list_for_each(node, &service_list) { - svc = node_to_item(node, struct service, slist); - if (svc->pid == pid) { - return svc; - } - } - return 0; -} - -struct service *service_find_by_keychord(int keychord_id) -{ - struct listnode *node; - struct service *svc; - list_for_each(node, &service_list) { - svc = node_to_item(node, struct service, slist); - if (svc->keychord_id == keychord_id) { - return svc; - } - } - return 0; -} - -void service_for_each(void (*func)(struct service *svc)) -{ - struct listnode *node; - struct service *svc; - list_for_each(node, &service_list) { - svc = node_to_item(node, struct service, slist); - func(svc); - } -} - -void service_for_each_class(const char *classname, - void (*func)(struct service *svc)) -{ - struct listnode *node; - struct service *svc; - list_for_each(node, &service_list) { - svc = node_to_item(node, struct service, slist); - if (!strcmp(svc->classname, classname)) { - func(svc); - } - } -} - -void service_for_each_flags(unsigned matchflags, - void (*func)(struct service *svc)) -{ - struct listnode *node; - struct service *svc; - list_for_each(node, &service_list) { - svc = node_to_item(node, struct service, slist); - if (svc->flags & matchflags) { - func(svc); - } - } -} - -void action_for_each_trigger(const char *trigger, - void (*func)(struct action *act)) -{ - struct listnode *node; - struct action *act; - list_for_each(node, &action_list) { - act = node_to_item(node, struct action, alist); - if (!strcmp(act->name, trigger)) { - func(act); - } - } -} - -void queue_property_triggers(const char *name, const char *value) -{ - struct listnode *node; - struct action *act; - list_for_each(node, &action_list) { - act = node_to_item(node, struct action, alist); - if (!strncmp(act->name, "property:", strlen("property:"))) { - const char *test = act->name + strlen("property:"); - int name_length = strlen(name); - - if (!strncmp(name, test, name_length) && - test[name_length] == '=' && - !strcmp(test + name_length + 1, value)) { - action_add_queue_tail(act); - } - } - } -} - -void queue_all_property_triggers() -{ - struct listnode *node; - struct action *act; - list_for_each(node, &action_list) { - act = node_to_item(node, struct action, alist); - if (!strncmp(act->name, "property:", strlen("property:"))) { - /* parse property name and value - syntax is property:<name>=<value> */ - const char* name = act->name + strlen("property:"); - const char* equals = strchr(name, '='); - if (equals) { - char prop_name[PROP_NAME_MAX + 1]; - const char* value; - int length = equals - name; - if (length > PROP_NAME_MAX) { - ERROR("property name too long in trigger %s", act->name); - } else { - memcpy(prop_name, name, length); - prop_name[length] = 0; - - /* does the property exist, and match the trigger value? */ - value = property_get(prop_name); - if (value && !strcmp(equals + 1, value)) { - action_add_queue_tail(act); - } - } - } - } - } -} - -void action_add_queue_tail(struct action *act) -{ - list_add_tail(&action_queue, &act->qlist); -} - -struct action *action_remove_queue_head(void) -{ - if (list_empty(&action_queue)) { - return 0; - } else { - struct listnode *node = list_head(&action_queue); - struct action *act = node_to_item(node, struct action, qlist); - list_remove(node); - return act; - } -} - -static void *parse_service(struct parse_state *state, int nargs, char **args) -{ - struct service *svc; - if (nargs < 3) { - parse_error(state, "services must have a name and a program\n"); - return 0; - } - if (!valid_name(args[1])) { - parse_error(state, "invalid service name '%s'\n", args[1]); - return 0; - } - - svc = service_find_by_name(args[1]); - if (svc) { - parse_error(state, "ignored duplicate definition of service '%s'\n", args[1]); - return 0; - } - - nargs -= 2; - svc = calloc(1, sizeof(*svc) + sizeof(char*) * nargs); - if (!svc) { - parse_error(state, "out of memory\n"); - return 0; - } - svc->name = args[1]; - svc->classname = "default"; - memcpy(svc->args, args + 2, sizeof(char*) * nargs); - svc->args[nargs] = 0; - svc->nargs = nargs; - svc->onrestart.name = "onrestart"; - list_init(&svc->onrestart.commands); - list_add_tail(&service_list, &svc->slist); - return svc; -} - -static void parse_line_service(struct parse_state *state, int nargs, char **args) -{ - struct service *svc = state->context; - struct command *cmd; - int i, kw, kw_nargs; - - if (nargs == 0) { - return; - } - - svc->ioprio_class = IoSchedClass_NONE; - - kw = lookup_keyword(args[0]); - switch (kw) { - case K_capability: - break; - case K_class: - if (nargs != 2) { - parse_error(state, "class option requires a classname\n"); - } else { - svc->classname = args[1]; - } - break; - case K_console: - svc->flags |= SVC_CONSOLE; - break; - case K_disabled: - svc->flags |= SVC_DISABLED; - break; - case K_ioprio: - if (nargs != 3) { - parse_error(state, "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n"); - } else { - svc->ioprio_pri = strtoul(args[2], 0, 8); - - if (svc->ioprio_pri < 0 || svc->ioprio_pri > 7) { - parse_error(state, "priority value must be range 0 - 7\n"); - break; - } - - if (!strcmp(args[1], "rt")) { - svc->ioprio_class = IoSchedClass_RT; - } else if (!strcmp(args[1], "be")) { - svc->ioprio_class = IoSchedClass_BE; - } else if (!strcmp(args[1], "idle")) { - svc->ioprio_class = IoSchedClass_IDLE; - } else { - parse_error(state, "ioprio option usage: ioprio <rt|be|idle> <0-7>\n"); - } - } - break; - case K_group: - if (nargs < 2) { - parse_error(state, "group option requires a group id\n"); - } else if (nargs > NR_SVC_SUPP_GIDS + 2) { - parse_error(state, "group option accepts at most %d supp. groups\n", - NR_SVC_SUPP_GIDS); - } else { - int n; - svc->gid = decode_uid(args[1]); - for (n = 2; n < nargs; n++) { - svc->supp_gids[n-2] = decode_uid(args[n]); - } - svc->nr_supp_gids = n - 2; - } - break; - case K_keycodes: - if (nargs < 2) { - parse_error(state, "keycodes option requires atleast one keycode\n"); - } else { - svc->keycodes = malloc((nargs - 1) * sizeof(svc->keycodes[0])); - if (!svc->keycodes) { - parse_error(state, "could not allocate keycodes\n"); - } else { - svc->nkeycodes = nargs - 1; - for (i = 1; i < nargs; i++) { - svc->keycodes[i - 1] = atoi(args[i]); - } - } - } - break; - case K_oneshot: - svc->flags |= SVC_ONESHOT; - break; - case K_onrestart: - nargs--; - args++; - kw = lookup_keyword(args[0]); - if (!kw_is(kw, COMMAND)) { - parse_error(state, "invalid command '%s'\n", args[0]); - break; - } - kw_nargs = kw_nargs(kw); - if (nargs < kw_nargs) { - parse_error(state, "%s requires %d %s\n", args[0], kw_nargs - 1, - kw_nargs > 2 ? "arguments" : "argument"); - break; - } - - cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); - cmd->func = kw_func(kw); - cmd->nargs = nargs; - memcpy(cmd->args, args, sizeof(char*) * nargs); - list_add_tail(&svc->onrestart.commands, &cmd->clist); - break; - case K_critical: - svc->flags |= SVC_CRITICAL; - break; - case K_setenv: { /* name value */ - struct svcenvinfo *ei; - if (nargs < 2) { - parse_error(state, "setenv option requires name and value arguments\n"); - break; - } - ei = calloc(1, sizeof(*ei)); - if (!ei) { - parse_error(state, "out of memory\n"); - break; - } - ei->name = args[1]; - ei->value = args[2]; - ei->next = svc->envvars; - svc->envvars = ei; - break; - } - case K_socket: {/* name type perm [ uid gid ] */ - struct socketinfo *si; - if (nargs < 4) { - parse_error(state, "socket option requires name, type, perm arguments\n"); - break; - } - if (strcmp(args[2],"dgram") && strcmp(args[2],"stream")) { - parse_error(state, "socket type must be 'dgram' or 'stream'\n"); - break; - } - si = calloc(1, sizeof(*si)); - if (!si) { - parse_error(state, "out of memory\n"); - break; - } - si->name = args[1]; - si->type = args[2]; - si->perm = strtoul(args[3], 0, 8); - if (nargs > 4) - si->uid = decode_uid(args[4]); - if (nargs > 5) - si->gid = decode_uid(args[5]); - si->next = svc->sockets; - svc->sockets = si; - break; - } - case K_user: - if (nargs != 2) { - parse_error(state, "user option requires a user id\n"); - } else { - svc->uid = decode_uid(args[1]); - } - break; - default: - parse_error(state, "invalid option '%s'\n", args[0]); - } -} - -static void *parse_action(struct parse_state *state, int nargs, char **args) -{ - struct action *act; - if (nargs < 2) { - parse_error(state, "actions must have a trigger\n"); - return 0; - } - if (nargs > 2) { - parse_error(state, "actions may not have extra parameters\n"); - return 0; - } - act = calloc(1, sizeof(*act)); - act->name = args[1]; - list_init(&act->commands); - list_add_tail(&action_list, &act->alist); - /* XXX add to hash */ - return act; -} - -static void parse_line_action(struct parse_state* state, int nargs, char **args) -{ - struct command *cmd; - struct action *act = state->context; - int (*func)(int nargs, char **args); - int kw, n; - - if (nargs == 0) { - return; - } - - kw = lookup_keyword(args[0]); - if (!kw_is(kw, COMMAND)) { - parse_error(state, "invalid command '%s'\n", args[0]); - return; - } - - n = kw_nargs(kw); - if (nargs < n) { - parse_error(state, "%s requires %d %s\n", args[0], n - 1, - n > 2 ? "arguments" : "argument"); - return; - } - cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs); - cmd->func = kw_func(kw); - cmd->nargs = nargs; - memcpy(cmd->args, args, sizeof(char*) * nargs); - list_add_tail(&act->commands, &cmd->clist); -} |