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- /*
- * $Id: udp+data.c,v 1.1.1.1 1999/05/18 15:33:43 dugsong Exp $
- *
- * libnet
- * UDP + payload Packet assembly tester
- *
- * Copyright (c) 1998, 1999 Mike D. Schiffman <mike@infonexus.com>
- * route|daemon9 <route@infonexus.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
-
- #if (HAVE_CONFIG_H)
- #include "../../include/config.h"
- #endif
- #include "../libnet_test.h"
-
- int
- main(int argc, char **argv)
- {
- int sock, c;
- u_long src_ip, dst_ip;
- u_short src_prt, dst_prt;
- u_char *cp, *buf;
- u_char *payload = "hello world";
- int payload_s = strlen(payload);
-
- printf("UDP + payload packet building/writing test\n");
-
- src_ip = 0;
- dst_ip = 0;
- src_prt = 0;
- dst_prt = 0;
- while((c = getopt(argc, argv, "d:s:")) != EOF)
- {
- switch (c)
- {
- /*
- * We expect the input to be of the form `ip.ip.ip.ip.port`. We
- * point cp to the last dot of the IP address/port string and
- * then seperate them with a NULL byte. The optarg now points to
- * just the IP address, and cp points to the port.
- */
- case 'd':
- if (!(cp = strrchr(optarg, '.')))
- {
- usage(argv[0]);
- }
- *cp++ = 0;
- dst_prt = (u_short)atoi(cp);
- if (!(dst_ip = name_resolve(optarg, 1)))
- {
- fprintf(stderr, "Bad destination IP address: %s\n", optarg);
- exit(1);
- }
- break;
- case 's':
- if (!(cp = strrchr(optarg, '.')))
- {
- usage(argv[0]);
- }
- *cp++ = 0;
- src_prt = (u_short)atoi(cp);
- if (!(src_ip = name_resolve(optarg, 1)))
- {
- fprintf(stderr, "Bad source IP address: %s\n", optarg);
- exit(1);
- }
- break;
- }
- }
- if (!src_ip || !src_prt || !dst_ip || !dst_prt)
- {
- usage(argv[0]);
- exit(EXIT_FAILURE);
- }
-
- buf = malloc(UDP_H + IP_H + payload_s);
- if (!buf)
- {
- perror("No memory for packet");
- exit(EXIT_FAILURE);
- }
-
- sock = open_raw_sock(IPPROTO_RAW);
- if (sock == -1)
- {
- perror("No socket");
- exit(EXIT_FAILURE);
- }
-
- build_ip(UDP_H + payload_s,
- 0,
- 242,
- 0,
- 64,
- IPPROTO_UDP,
- src_ip,
- dst_ip,
- NULL,
- 0,
- buf);
-
- build_udp(1025, 22, payload, payload_s, buf + IP_H);
-
- do_checksum(buf, IPPROTO_UDP, UDP_H + payload_s);
-
- c = write_ip(sock, buf, UDP_H + IP_H + payload_s);
- if (c < UDP_H + IP_H + payload_s)
- {
- fprintf(stderr, "write_ip\n");
- }
- printf("Completed, wrote %d bytes\n", c);
-
- free(buf);
-
- return (c == -1 ? EXIT_FAILURE : EXIT_SUCCESS);
- }
-
-
- void
- usage(u_char *name)
- {
- fprintf(stderr,
- "usage: %s -s source_ip:source_port -d destination_ip:destination_port\n",
- name);
- }
-
- /* EOF */
-