/*
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.
*/
/**
* - Nathan Evans
*/
#define _GNU_SOURCE
+/* Instead of including gnunet_common.h */
+#define GNUNET_memcpy(dst,src,n) do { if (0 != n) { (void) memcpy (dst,src,n); } } while (0)
+#define FD_SETSIZE 1024
#include <winsock2.h>
#include <ws2tcpip.h>
#include <sys/time.h>
uint16_t crc;
};
+/**
+ * Will this binary be run in permissions testing mode?
+ */
+static boolean privilege_testing = FALSE;
/**
* Socket we use to send our ICMP packets.
ip_pkt.checksum = 0;
ip_pkt.src_ip = my_ip->s_addr;
ip_pkt.dst_ip = other->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));
+ ip_pkt.checksum =
+ htons (calc_checksum ((uint16_t *) & ip_pkt, sizeof (struct ip_header)));
+ GNUNET_memcpy (&packet[off], &ip_pkt, sizeof (struct ip_header));
off += sizeof (struct ip_header);
icmp_pkt.type = ICMP_TIME_EXCEEDED;
icmp_pkt.code = 0;
icmp_pkt.checksum = 0;
icmp_pkt.unused = 0;
- memcpy (&packet[off], &icmp_pkt, sizeof (struct icmp_ttl_exceeded_header));
+ GNUNET_memcpy (&packet[off], &icmp_pkt, sizeof (struct icmp_ttl_exceeded_header));
off += sizeof (struct icmp_ttl_exceeded_header);
/* ip header of the presumably 'lost' udp packet */
ip_pkt.vers_ihl = 0x45;
ip_pkt.tos = 0;
- ip_pkt.pkt_len = htons (sizeof (struct ip_header) +
- sizeof (struct udp_header));
+ ip_pkt.pkt_len =
+ htons (sizeof (struct ip_header) + sizeof (struct udp_header));
ip_pkt.id = htons (0);
ip_pkt.flags_frag_offset = 0;
ip_pkt.ttl = 128;
ip_pkt.checksum = 0;
ip_pkt.src_ip = other->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));
+ ip_pkt.checksum =
+ htons (calc_checksum ((uint16_t *) & ip_pkt, sizeof (struct ip_header)));
+ GNUNET_memcpy (&packet[off], &ip_pkt, sizeof (struct ip_header));
off += sizeof (struct ip_header);
/* build UDP header */
udp_pkt.dst_port = htons (NAT_TRAV_PORT);
udp_pkt.length = htons (port);
udp_pkt.crc = 0;
- memcpy (&packet[off], &udp_pkt, sizeof (struct udp_header));
+ GNUNET_memcpy (&packet[off], &udp_pkt, sizeof (struct udp_header));
off += sizeof (struct udp_header);
/* no go back to calculate ICMP packet checksum */
- icmp_pkt.checksum = htons (calc_checksum ((uint16_t *) & packet[off],
- sizeof (struct
- icmp_ttl_exceeded_header) +
- sizeof (struct ip_header) +
- sizeof (struct udp_header)));
- memcpy (&packet[sizeof (struct ip_header)], &icmp_pkt,
+ icmp_pkt.checksum =
+ htons (calc_checksum
+ ((uint16_t *) & packet[off],
+ sizeof (struct icmp_ttl_exceeded_header) +
+ sizeof (struct ip_header) + sizeof (struct udp_header)));
+ GNUNET_memcpy (&packet[sizeof (struct ip_header)], &icmp_pkt,
sizeof (struct icmp_ttl_exceeded_header));
memset (&dst, 0, sizeof (dst));
dst.sin_family = AF_INET;
dst.sin_addr = *other;
- err = sendto (rawsock,
- packet,
- sizeof (packet), 0, (struct sockaddr *) &dst, sizeof (dst));
+ err =
+ sendto (rawsock, packet, sizeof (packet), 0, (struct sockaddr *) &dst,
+ sizeof (dst));
if (err < 0)
{
fprintf (stderr, "sendto failed: %s\n", strerror (errno));
ip_pkt.checksum = 0;
ip_pkt.src_ip = my_ip->s_addr;
ip_pkt.dst_ip = other->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));
+ ip_pkt.checksum =
+ htons (calc_checksum ((uint16_t *) & ip_pkt, sizeof (struct ip_header)));
+ GNUNET_memcpy (&packet[off], &ip_pkt, sizeof (struct ip_header));
off += sizeof (ip_pkt);
/* icmp reply: time exceeded */
icmp_ttl.code = 0;
icmp_ttl.checksum = 0;
icmp_ttl.unused = 0;
- memcpy (&packet[off], &icmp_ttl, sizeof (struct icmp_ttl_exceeded_header));
+ GNUNET_memcpy (&packet[off], &icmp_ttl, sizeof (struct icmp_ttl_exceeded_header));
off += sizeof (struct icmp_ttl_exceeded_header);
/* ip header of the presumably 'lost' udp packet */
ip_pkt.src_ip = other->s_addr;
ip_pkt.dst_ip = dummy.s_addr;
ip_pkt.checksum = 0;
- ip_pkt.checksum = htons (calc_checksum ((uint16_t *) & ip_pkt,
- sizeof (struct ip_header)));
- memcpy (&packet[off], &ip_pkt, sizeof (struct ip_header));
+ ip_pkt.checksum =
+ htons (calc_checksum ((uint16_t *) & ip_pkt, sizeof (struct ip_header)));
+ GNUNET_memcpy (&packet[off], &ip_pkt, sizeof (struct ip_header));
off += sizeof (struct ip_header);
icmp_echo.type = ICMP_ECHO;
icmp_echo.code = 0;
icmp_echo.reserved = htonl (port);
icmp_echo.checksum = 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));
+ icmp_echo.checksum =
+ htons (calc_checksum
+ ((uint16_t *) & icmp_echo, sizeof (struct icmp_echo_header)));
+ GNUNET_memcpy (&packet[off], &icmp_echo, sizeof (struct icmp_echo_header));
/* no go back to calculate ICMP packet checksum */
off = sizeof (struct ip_header);
- icmp_ttl.checksum = htons (calc_checksum ((uint16_t *) & packet[off],
- sizeof (struct
- icmp_ttl_exceeded_header) +
- sizeof (struct ip_header) +
- sizeof (struct icmp_echo_header)));
- memcpy (&packet[off], &icmp_ttl, sizeof (struct icmp_ttl_exceeded_header));
+ icmp_ttl.checksum =
+ htons (calc_checksum
+ ((uint16_t *) & packet[off],
+ sizeof (struct icmp_ttl_exceeded_header) +
+ sizeof (struct ip_header) + sizeof (struct icmp_echo_header)));
+ GNUNET_memcpy (&packet[off], &icmp_ttl, sizeof (struct icmp_ttl_exceeded_header));
memset (&dst, 0, sizeof (dst));
dst.sin_family = AF_INET;
dst.sin_addr = *other;
- err = sendto (rawsock,
- packet,
- sizeof (packet), 0, (struct sockaddr *) &dst, sizeof (dst));
+ err =
+ sendto (rawsock, packet, sizeof (packet), 0, (struct sockaddr *) &dst,
+ sizeof (dst));
if (err < 0)
{
if (0 !=
setsockopt (ret, SOL_SOCKET, SO_BROADCAST, (char *) &bOptVal, bOptLen))
{
- fprintf (stderr,
- "Error setting SO_BROADCAST to ON: %s\n", strerror (errno));
+ fprintf (stderr, "Error setting SO_BROADCAST to ON: %s\n",
+ strerror (errno));
closesocket (rawsock);
return INVALID_SOCKET;
}
struct in_addr external;
struct in_addr target;
WSADATA wsaData;
-
unsigned int p;
+ if (argc > 1 && 0 != strcmp (argv[1], "-d")){
+ privilege_testing = TRUE;
+ fprintf (stderr,
+ "%s",
+ "DEBUG: Running binary in privilege testing mode.");
+ argv++;
+ argc--;
+ }
+
if (argc != 4)
{
fprintf (stderr,
- "This program must be started with our IP, the targets external IP, and our port as arguments.\n");
+ "%s",
+ "This program must be started with our IP, the targets external IP, and our port as arguments.\n");
return 1;
}
if ((1 != inet_pton (AF_INET, argv[1], &external)) ||
(1 != inet_pton (AF_INET, argv[2], &target)))
{
- fprintf (stderr, "Error parsing IPv4 address: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Error parsing IPv4 address: %s\n",
+ strerror (errno));
return 1;
}
if ((1 != sscanf (argv[3], "%u", &p)) || (0 == p) || (0xFFFF < p))
{
- fprintf (stderr, "Error parsing port value `%s'\n", argv[3]);
+ fprintf (stderr,
+ "Error parsing port value `%s'\n",
+ argv[3]);
return 1;
}
port = (uint16_t) p;
if (0 != WSAStartup (MAKEWORD (2, 1), &wsaData))
{
- fprintf (stderr, "Failed to find Winsock 2.1 or better.\n");
+ fprintf (stderr,
+ "%s",
+ "Failed to find Winsock 2.1 or better.\n");
return 2;
}
if (1 != inet_pton (AF_INET, DUMMY_IP, &dummy))
{
- fprintf (stderr, "Internal error converting dummy IP to binary.\n");
+ fprintf (stderr,
+ "%s",
+ "Internal error converting dummy IP to binary.\n");
return 2;
}
if (-1 == (rawsock = make_raw_socket ()))
return 3;
- send_icmp (&external, &target);
- send_icmp_udp (&external, &target);
+ if (!privilege_testing){
+ send_icmp (&external, &target);
+ send_icmp_udp (&external, &target);
+ }
closesocket (rawsock);
WSACleanup ();
return 0;
projects / oweals / gnunet.git / blobdiff