/*
This file is part of GNUnet.
- (C) 2010 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2010 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
ip_pkt.src_ip = my_ip->s_addr;
ip_pkt.dst_ip = dummy.s_addr;
ip_pkt.checksum =
- htons (calc_checksum ((uint16_t *) & ip_pkt, sizeof (struct ip_header)));
- memcpy (&packet[off], &ip_pkt, sizeof (struct ip_header));
+ htons (calc_checksum ((uint16_t *) & ip_pkt,
+ sizeof (struct ip_header)));
+ memcpy (&packet[off],
+ &ip_pkt,
+ sizeof (struct ip_header));
off += sizeof (struct ip_header);
icmp_echo.type = ICMP_ECHO;
icmp_echo.checksum = 0;
icmp_echo.reserved = 0;
icmp_echo.checksum =
- htons (calc_checksum
- ((uint16_t *) & icmp_echo, sizeof (struct icmp_echo_header)));
- memcpy (&packet[off], &icmp_echo, sizeof (struct icmp_echo_header));
+ htons (calc_checksum
+ ((uint16_t *) & icmp_echo,
+ sizeof (struct icmp_echo_header)));
+ memcpy (&packet[off],
+ &icmp_echo,
+ sizeof (struct icmp_echo_header));
off += sizeof (struct icmp_echo_header);
memset (&dst, 0, sizeof (dst));
dst.sin_len = sizeof (struct sockaddr_in);
#endif
dst.sin_addr = dummy;
- err =
- sendto (rawsock, packet, off, 0, (struct sockaddr *) &dst, sizeof (dst));
+ err = sendto (rawsock,
+ packet,
+ off,
+ 0,
+ (struct sockaddr *) &dst,
+ sizeof (dst));
if (err < 0)
{
#if VERBOSE
- fprintf (stderr, "sendto failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "sendto failed: %s\n",
+ strerror (errno));
#endif
}
else if (sizeof (packet) != err)
{
- fprintf (stderr, "Error: partial send of ICMP message\n");
+ fprintf (stderr,
+ "Error: partial send of ICMP message\n");
}
}
#endif
dst.sin_addr = dummy;
dst.sin_port = htons (NAT_TRAV_PORT);
- err = sendto (udpsock, NULL, 0, 0, (struct sockaddr *) &dst, sizeof (dst));
+ err = sendto (udpsock,
+ NULL,
+ 0,
+ 0,
+ (struct sockaddr *) &dst,
+ sizeof (dst));
if (err < 0)
{
#if VERBOSE
- fprintf (stderr, "sendto failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "sendto failed: %s\n",
+ strerror (errno));
#endif
}
else if (0 != err)
{
- fprintf (stderr, "Error: partial send of ICMP message\n");
+ fprintf (stderr,
+ "Error: partial send of ICMP message\n");
}
}
have = read (icmpsock, buf, sizeof (buf));
if (-1 == have)
{
- fprintf (stderr, "Error reading raw socket: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Error reading raw socket: %s\n",
+ strerror (errno));
return;
}
#if VERBOSE
- fprintf (stderr, "Received message of %u bytes\n", (unsigned int) have);
+ fprintf (stderr,
+ "Received message of %u bytes\n",
+ (unsigned int) have);
#endif
if (have <
(ssize_t) (sizeof (struct ip_header) +
const int one = 1;
if (-1 ==
- setsockopt (rawsock, SOL_SOCKET, SO_BROADCAST, (char *) &one, sizeof (one)))
+ setsockopt (rawsock,
+ SOL_SOCKET,
+ SO_BROADCAST,
+ (char *) &one,
+ sizeof (one)))
{
- fprintf (stderr, "setsockopt failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "setsockopt failed: %s\n",
+ strerror (errno));
return -1;
}
if (-1 ==
- setsockopt (rawsock, IPPROTO_IP, IP_HDRINCL, (char *) &one, sizeof (one)))
+ setsockopt (rawsock,
+ IPPROTO_IP,
+ IP_HDRINCL,
+ (char *) &one,
+ sizeof (one)))
{
- fprintf (stderr, "setsockopt failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "setsockopt failed: %s\n",
+ strerror (errno));
return -1;
}
return 0;
int
-main (int argc, char *const *argv)
+main (int argc,
+ char *const *argv)
{
struct in_addr external;
fd_set rs;
int global_ret;
/* Create an ICMP raw socket for reading (we'll check errors later) */
- icmpsock = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP);
+ icmpsock = socket (AF_INET,
+ SOCK_RAW,
+ IPPROTO_ICMP);
icmp_eno = errno;
/* Create an (ICMP) raw socket for writing (we'll check errors later) */
- rawsock = socket (AF_INET, SOCK_RAW, IPPROTO_RAW);
+ rawsock = socket (AF_INET,
+ SOCK_RAW,
+ IPPROTO_RAW);
raw_eno = errno;
udpsock = -1;
#ifdef HAVE_SETRESUID
if (0 != setresuid (uid, uid, uid))
{
- fprintf (stderr, "Failed to setresuid: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Failed to setresuid: %s\n",
+ strerror (errno));
global_ret = 1;
goto error_exit;
}
#else
if (0 != (setuid (uid) | seteuid (uid)))
{
- fprintf (stderr, "Failed to setuid: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Failed to setuid: %s\n",
+ strerror (errno));
global_ret = 2;
goto error_exit;
}
}
if (1 != inet_pton (AF_INET, argv[1], &external))
{
- fprintf (stderr, "Error parsing IPv4 address: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Error parsing IPv4 address: %s\n",
+ strerror (errno));
global_ret = 4;
goto error_exit;
}
if (1 != inet_pton (AF_INET, DUMMY_IP, &dummy))
{
- fprintf (stderr, "Internal error converting dummy IP to binary.\n");
+ fprintf (stderr,
+ "Internal error converting dummy IP to binary.\n");
global_ret = 5;
goto error_exit;
}
/* error checking icmpsock */
if (-1 == icmpsock)
{
- fprintf (stderr, "Error opening RAW socket: %s\n", strerror (icmp_eno));
+ fprintf (stderr,
+ "Error opening RAW socket: %s\n",
+ strerror (icmp_eno));
global_ret = 6;
goto error_exit;
}
{
/* this could happen if we were started with a large number of already-open
file descriptors... */
- fprintf (stderr, "Socket number too large (%d > %u)\n", icmpsock,
+ fprintf (stderr,
+ "Socket number too large (%d > %u)\n",
+ icmpsock,
(unsigned int) FD_SETSIZE);
global_ret = 7;
goto error_exit;
/* error checking rawsock */
if (-1 == rawsock)
{
- fprintf (stderr, "Error opening RAW socket: %s\n", strerror (raw_eno));
+ fprintf (stderr,
+ "Error opening RAW socket: %s\n",
+ strerror (raw_eno));
global_ret = 8;
goto error_exit;
}
{
if (errno == EINTR)
continue;
- fprintf (stderr, "select failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "select failed: %s\n",
+ strerror (errno));
break;
}
if (1 == getppid ()) /* Check the parent process id, if 1 the parent has died, so we should die too */
projects / oweals / gnunet.git / blobdiff