int fakeidentd_main(int argc, char **argv)
{
enum {
OPT_foreground = 0x1,
OPT_inetd = 0x2,
OPT_inetdwait = 0x4,
OPT_fiw = 0x7,
OPT_bindaddr = 0x8,
};
const char *bind_address = NULL;
unsigned opt;
int fd;
opt = getopt32(argv, "fiwb:", &bind_address);
strcpy(bogouser, "nobody");
if (argv[optind])
strncpy(bogouser, argv[optind], sizeof(bogouser));
/* Daemonize if no -f and no -i and no -w */
if (!(opt & OPT_fiw));
bb_daemonize_or_rexec(0, argv);
/* Where to log in inetd modes? "Classic" inetd
* probably has its stderr /dev/null'ed (we need log to syslog?),
* but daemontools-like utilities usually expect that children
* log to stderr. I like daemontools more. Go their way.
* (Or maybe we need yet another option "log to syslog") */
if (!(opt & OPT_fiw) /* || (opt & OPT_syslog) */) {
openlog(applet_name, 0, LOG_DAEMON);
logmode = LOGMODE_SYSLOG;
}
if (opt & OPT_inetd) {
inetd_mode();
return 0;
}
/* Ignore closed connections when writing */
signal(SIGPIPE, SIG_IGN);
fd = 0;
if (!(opt & OPT_inetdwait)) {
fd = create_and_bind_stream_or_die(bind_address,
bb_lookup_port("identd", "tcp", 113));
xlisten(fd, 5);
}
isrv_run(fd, new_peer, do_rd, /*do_wr:*/ NULL, do_timeout,
TIMEOUT, (opt & OPT_inetdwait) ? TIMEOUT : 0);
return 0;
}
int xbind_connect(const len_and_sockaddr *lsa, const char *ip)
{
int fd;
/*Start of MNT 2008-10-13 14:40 for 传输超时检测 by z65940*/
g_TimeoutCnt = ATP_CONNECT_TIMEOUT_D; // 每个命令的超时检测
/*End of MNT 2008-10-13 14:40 for by z65940*/
#if 0
/*Added by yehuisheng00183935@20110806 修改IPv6链路地址访问问题--使用链路地址时，必须指定参数"sin6_scope_id"*/
if ( AF_INET6 == lsa->u.sa.sa_family )
{
if (IN6_IS_ADDR_LINKLOCAL(&(((struct sockaddr_in6 *)(&(lsa->u.sa)))->sin6_addr)))
{
((struct sockaddr_in6 *)(&(lsa->u.sa)))->sin6_scope_id = if_nametoindex("br0");
}
}
/*Added by yehuisheng00183935@20110806 修改IPv6链路地址访问问题--使用链路地址时，必须指定参数"sin6_scope_id"*/
#endif
if (NULL == ip)
{
// No bind, the same as xconnect_stream
fd = xconnect_stream(lsa);
/*Start of MNT 2008-10-13 14:40 for 传输超时检测 by z65940*/
g_TimeoutCnt = -1;
/*End of MNT 2008-10-13 14:40 for by z65940*/
return fd;
}
// Bind to specified local interface
//fd = create_and_bind_stream_or_die(ip, get_nport(&(lsa->u.sa)));
fd = create_and_bind_stream_or_die(ip, 0);
xconnect(fd, &(lsa->u.sa), lsa->len);
/*Start of MNT 2008-10-13 14:40 for 传输超时检测 by z65940*/
g_TimeoutCnt = -1;
/*End of MNT 2008-10-13 14:40 for by z65940*/
return fd;
}
int fakeidentd_main(int argc, char **argv)
{
int fd;
pid_t pid;
/* FD_ZERO(&G.readfds); - in bss, already zeroed */
FD_SET(0, &G.readfds);
/* handle -b <ip> parameter */
getopt32(argc, argv, "b:", &bind_ip_address);
/* handle optional REPLY STRING */
if (optind < argc)
G.identuser = argv[optind];
else
G.identuser = "******";
writepid();
signal(SIGTERM, handlexitsigs);
signal(SIGINT, handlexitsigs);
signal(SIGQUIT, handlexitsigs);
signal(SIGHUP, SIG_IGN);
signal(SIGPIPE, SIG_IGN); /* ignore closed connections when writing */
fd = create_and_bind_stream_or_die(bind_ip_address, bb_lookup_port("identd", "tcp", 113));
xlisten(fd, 5);
pid = fork();
if (pid < 0)
bb_perror_msg_and_die("fork");
if (pid != 0) /* parent */
exit(0);
/* child */
setsid();
movefd(fd, 0);
while (fd)
close(fd--);
openlog(applet_name, 0, LOG_DAEMON);
logmode = LOGMODE_SYSLOG;
/* main loop where we process all events and never exit */
while (1) {
fd_set rfds = G.readfds;
struct timeval tv = { 15, 0 };
int i;
int tim = time(NULL);
select(G.conncnt + FCS, &rfds, NULL, NULL, G.conncnt? &tv: NULL);
for (i = G.conncnt - 1; i >= 0; i--) {
int s = i + FCS;
if (FD_ISSET(s, &rfds)) {
char *buf = conns[i].buf;
unsigned len = conns[i].len;
unsigned l;
l = read(s, buf + len, sizeof(conns[0].buf) - len);
if (l > 0) {
if (checkInput(buf, len, l)) {
reply(s, buf);
goto deleteconn;
} else if (len + l >= sizeof(conns[0].buf)) {
replyError(s, "X-INVALID-REQUEST");
goto deleteconn;
} else {
conns[i].len += l;
}
} else {
goto deleteconn;
}
conns[i].lasttime = tim;
continue;
deleteconn:
deleteConn(s);
} else {
/* implement as time_after() in linux kernel sources ... */
if (conns[i].lasttime + MAXIDLETIME <= tim) {
replyError(s, "X-TIMEOUT");
deleteConn(s);
}
}
}
if (FD_ISSET(0, &rfds)) {
int s = accept(0, NULL, 0);
if (s < 0) {
if (errno != EINTR)
bb_perror_msg("accept");
} else {
if (G.conncnt == MAXCONNS)
i = closeOldest();
else
i = G.conncnt++;
movefd(s, i + FCS); /* move if not already there */
FD_SET(i + FCS, &G.readfds);
conns[i].len = 0;
conns[i].lasttime = time(NULL);
}
}
} /* end of while (1) */
return 0;
}
