// Register some signal handlers.
static void system_init(void)
{
struct sigaction act;
fb_signal(SIGHUP, terminal_schedule_exit);
#ifndef lint
fb_signal(SIGINT, SIG_IGN);
fb_signal(SIGQUIT, SIG_IGN);
fb_signal(SIGPIPE, SIG_IGN);
#ifdef DOTIMEOUT
set_user_status(ST_LOGIN);
alarm(LOGIN_TIMEOUT);
#else
fb_signal(SIGALRM, SIG_SIG);
#endif
fb_signal(SIGTERM, SIG_IGN);
fb_signal(SIGURG, SIG_IGN);
fb_signal(SIGTSTP, SIG_IGN);
fb_signal(SIGTTIN, SIG_IGN);
#endif
sigemptyset(&act.sa_mask);
act.sa_flags = SA_NODEFER;
act.sa_handler = msg_handler;
sigaction(SIGUSR2, &act, NULL);
{
struct itimerval itv;
memset(&itv,0, sizeof(struct itimerval));
itv.it_value.tv_sec = 2 * 60;
setitimer(ITIMER_PROF, &itv, NULL);
fb_signal(SIGPROF, exit);
}
}
int main(int argc, char **argv)
{
const char *socket_path = getenv("FBBS_SOCKET_PATH");
server_path = getenv("FBBS_SERVER_PATH");
if (!socket_path || !server_path)
return EXIT_FAILURE;
start_daemon();
const char *fbbs_max_servers = getenv("FBBS_MAX_SERVERS");
if (fbbs_max_servers)
max_servers = strtol(fbbs_max_servers, NULL, 10);
if (max_servers <= 0)
max_servers = DEFAULT_MAX_SERVERS;
servers = malloc(sizeof(*servers) * max_servers);
if (!servers)
return EXIT_FAILURE;
for (int i = 0; i < max_servers; ++i) {
servers[i].pid = -1;
servers[i].fd = -1;
}
int max_clients = 0;
const char *fbbs_max_clients = getenv("FBBS_MAX_CLIENTS");
if (fbbs_max_clients)
max_clients = strtol(fbbs_max_clients, NULL, 10);
max_clients = check_max_clients(max_clients);
if (max_clients <= 0)
return EXIT_FAILURE;
if (setgid(BBSGID) != 0)
return EXIT_FAILURE;
if (setuid(BBSUID) != 0)
return EXIT_FAILURE;
int fd = bind_unix_path(socket_path);
if (fd < 0)
return EXIT_FAILURE;
fb_signal(SIGPIPE, SIG_IGN);
fb_signal(SIGCHLD, reap_child);
fb_signal(SIGTERM, shutdown_backend);
for (int i = 0; i < max_servers; ++i) {
if (!spawn_server(servers + i)) {
kill_servers();
return EXIT_FAILURE;
}
}
ev_run(EV_DEFAULT_ 0);
return EXIT_SUCCESS;
}
//#define MY_DEBUG
// 执行命令cmdfile,参数为param1
static void exec_cmd(int umode, int pager, char *cmdfile, char *param1) {
char buf[160];
char *my_argv[18], *ptr;
fb_signal(SIGALRM, SIG_IGN);
set_user_status(umode);
screen_clear();
screen_move(2, 0);
if (!dashf(cmdfile)) {
//% prints("文件 [%s] 不存在！\n", cmdfile);
prints("\xce\xc4\xbc\xfe [%s] \xb2\xbb\xb4\xe6\xd4\xda\xa3\xa1\n", cmdfile);
pressreturn();
return;
}
sprintf(buf, "%s %s %s %d", cmdfile, param1, currentuser.userid,
getpid());
report(buf, currentuser.userid);
my_argv[0] = cmdfile;
strcpy(buf, param1);
if (buf[0] != '\0')
ptr = strtok(buf, " \t");
else
ptr = NULL;
for (int i = 1; i < 18; i++) {
if (ptr) {
my_argv[i] = ptr;
ptr = strtok(NULL, " \t");
} else {
my_argv[i] = NULL;
}
}
#ifdef MY_DEBUG
for (i = 0; i < 18; i++) {
if (my_argv[i] != NULL)
prints ("my_argv[%d] = %s\n", i, my_argv[i]);
else
prints ("my_argv[%d] = (none)\n", i);
}
pressanykey ();
#else
child_pid = fork();
if (child_pid == -1) {
//% prints("资源紧缺，fork() 失败，请稍后再使用");
prints("\xd7\xca\xd4\xb4\xbd\xf4\xc8\xb1\xa3\xac""fork() \xca\xa7\xb0\xdc\xa3\xac\xc7\xeb\xc9\xd4\xba\xf3\xd4\xd9\xca\xb9\xd3\xc3");
child_pid = 0;
pressreturn();
return;
}
if (child_pid == 0) {
execv(cmdfile, my_argv);
exit(0);
} else {
waitpid(child_pid, NULL, 0);
}
#endif
child_pid = 0;
screen_clear();
}
// Save user info on exit.
void u_exit(void)
{
// 这些信号的处理要关掉, 否则在离线时等候回车时出现
// 信号会导致重写名单, 这个导致的名单混乱比kick user更多 (ylsdd)
fb_signal(SIGALRM, SIG_DFL);
fb_signal(SIGPIPE, SIG_DFL);
fb_signal(SIGTERM, SIG_DFL);
fb_signal(SIGUSR1, SIG_IGN);
fb_signal(SIGUSR2, SIG_IGN);
if (HAS_PERM(PERM_LOGINCLOAK))
setflags(CLOAK_FLAG, !session_visible());
set_safe_record();
update_user_stay(¤tuser, false, false);
substitut_record(PASSFILE, ¤tuser, sizeof(currentuser), usernum);
uidshm->status[usernum - 1]--;
session_destroy(session_id());
session_set_pid(0);
}
/**
* The main entrance of bbswebd.
* @return 0 on success, 1 on initialization error.
*/
int main(void)
{
fb_signal(SIGTERM, exit_handler);
fb_signal(SIGUSR1, exit_handler);
if (initialize() < 0)
return EXIT_FAILURE;
initialize_environment(INIT_CONV | INIT_DB | INIT_MDB);
while (FCGI_Accept() >= 0) {
if (!web_ctx_init())
return EXIT_FAILURE;
const web_handler_t *h = _get_handler();
int code = BBS_ENOURL;
if (h) {
get_client_ip();
session_validate();
brc_reset();
if (session_get_id()) {
if (h->status != ST_IDLE)
set_user_status(h->status);
session_set_idle(session_get_id(), fb_time());
if (h->status != ST_READING)
session_set_board(0);
}
code = execute(h);
}
if (code > 0)
web_respond(code);
else
check_bbserr(code);
web_ctx_destroy();
}
return 0;
}
/**
* Daemonize the process.
*/
void start_daemon(void)
{
umask(0);
int pid = fork();
if (pid < 0) {
exit(1);
} else if (pid != 0) {
exit(0);
}
if (setsid() == -1)
exit(1);
if ((pid = fork()) < 0) {
exit(1);
} else if (pid != 0) {
exit(0);
}
file_close_all();
for (int n = 1; n <= NSIG; n++)
fb_signal(n, SIG_IGN);
}
