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shorten some lines

This commit is contained in:
Erik Ekman 2008-09-09 19:55:45 +00:00
parent 8eccbf097a
commit d40c464ac1
1 changed files with 18 additions and 8 deletions
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26
src/iodined.c
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@ -375,7 +375,8 @@ tunnel_bind(int bind_fd, int dns_fd)
int r;
fromlen = sizeof(struct sockaddr);
r = recvfrom(bind_fd, packet, sizeof(packet), 0, (struct sockaddr*)&from, &fromlen);
r = recvfrom(bind_fd, packet, sizeof(packet), 0,
(struct sockaddr*)&from, &fromlen);
if (r <= 0)
return 0;
@ -400,7 +401,8 @@ tunnel_bind(int bind_fd, int dns_fd)
inet_ntoa(in->sin_addr), (id & 0xffff), r);
}
if (sendto(dns_fd, packet, r, 0, (const struct sockaddr *) &(query->addr), query->addrlen) <= 0) {
if (sendto(dns_fd, packet, r, 0, (const struct sockaddr *) &(query->addr),
query->addrlen) <= 0) {
warn("forward reply error");
}
@ -539,8 +541,12 @@ read_dns(int fd, struct query *q)
memcpy((struct sockaddr*)&q->from, (struct sockaddr*)&from, addrlen);
q->fromlen = addrlen;
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
if (cmsg->cmsg_level == IPPROTO_IP && cmsg->cmsg_type == DSTADDR_SOCKOPT) {
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL;
cmsg = CMSG_NXTHDR(&msg, cmsg)) {
if (cmsg->cmsg_level == IPPROTO_IP &&
cmsg->cmsg_type == DSTADDR_SOCKOPT) {
q->destination = *dstaddr(cmsg);
break;
}
@ -577,7 +583,8 @@ static void
usage() {
extern char *__progname;
printf("Usage: %s [-v] [-h] [-c] [-s] [-f] [-D] [-u user] [-t chrootdir] [-d device] [-m mtu] "
printf("Usage: %s [-v] [-h] [-c] [-s] [-f] [-D] [-u user] "
"[-t chrootdir] [-d device] [-m mtu] "
"[-l ip address to listen on] [-p port] [-b port] [-P password]"
" tunnel_ip topdomain\n", __progname);
exit(2);
@ -588,20 +595,23 @@ help() {
extern char *__progname;
printf("iodine IP over DNS tunneling server\n");
printf("Usage: %s [-v] [-h] [-c] [-s] [-f] [-D] [-u user] [-t chrootdir] [-d device] [-m mtu] "
printf("Usage: %s [-v] [-h] [-c] [-s] [-f] [-D] [-u user] "
"[-t chrootdir] [-d device] [-m mtu] "
"[-l ip address to listen on] [-p port] [-b port] [-P password]"
" tunnel_ip topdomain\n", __progname);
printf(" -v to print version info and exit\n");
printf(" -h to print this help and exit\n");
printf(" -c to disable check of client IP/port on each request\n");
printf(" -s to skip creating and configuring the tun device which then has to be created manually\n");
printf(" -s to skip creating and configuring the tun device, "
"which then has to be created manually\n");
printf(" -f to keep running in foreground\n");
printf(" -D to increase debug level\n");
printf(" -u name to drop privileges and run as user 'name'\n");
printf(" -t dir to chroot to directory dir\n");
printf(" -d device to set tunnel device name\n");
printf(" -m mtu to set tunnel device mtu\n");
printf(" -l ip address to listen on for incoming dns traffic (default 0.0.0.0)\n");
printf(" -l ip address to listen on for incoming dns traffic "
"(default 0.0.0.0)\n");
printf(" -p port to listen on for incoming dns traffic (default 53)\n");
printf(" -b port to forward normal DNS queries to (on localhost)\n");
printf(" -P password used for authentication (max 32 chars will be used)\n");