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1.1 misho 1: /*
2: * $Id: udp2.c,v 1.6 2004/03/01 20:26:12 mike Exp $
3: *
4: * libnet 1.1
5: * Build a UDP packet using port list chains
6: *
7: * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
8: * All rights reserved.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: *
31: */
32:
33: #if (HAVE_CONFIG_H)
34: #include "../include/config.h"
35: #endif
36: #include "./libnet_test.h"
37:
38:
39: int
40: main(int argc, char **argv)
41: {
42: int c, build_ip;
43: struct timeval r;
44: struct timeval s;
45: struct timeval e;
46: libnet_t *l;
47: libnet_ptag_t udp;
48: char *payload;
49: libnet_ptag_t t;
50: struct libnet_stats ls;
51: u_int16_t payload_s;
52: u_int32_t src_ip, dst_ip;
53: u_int16_t bport, eport, cport;
54: libnet_plist_t plist, *plist_p;
55: char errbuf[LIBNET_ERRBUF_SIZE];
56:
57: printf("libnet 1.1.2 packet shaping: UDP2[link]\n");
58:
59: l = libnet_init(
60: LIBNET_LINK, /* injection type */
61: NULL, /* network interface */
62: errbuf); /* errbuf */
63:
64: if (l == NULL)
65: {
66: fprintf(stderr, "libnet_init() failed: %s", errbuf);
67: exit(EXIT_FAILURE);
68: }
69:
70: src_ip = 0;
71: dst_ip = 0;
72: payload = NULL;
73: payload_s = 0;
74: plist_p = NULL;
75: while ((c = getopt(argc, argv, "d:s:p:P:")) != EOF)
76: {
77: switch (c)
78: {
79: case 'd':
80: if ((dst_ip = libnet_name2addr4(l, optarg,
81: LIBNET_RESOLVE)) == -1)
82: {
83: fprintf(stderr, "Bad destination IP address: %s\n", optarg);
84: exit(1);
85: }
86: break;
87: case 's':
88: if ((src_ip = libnet_name2addr4(l, optarg,
89: LIBNET_RESOLVE)) == -1)
90: {
91: fprintf(stderr, "Bad source IP address: %s\n", optarg);
92: exit(1);
93: }
94: break;
95: case 'P':
96: plist_p = &plist;
97: if (libnet_plist_chain_new(l, &plist_p, optarg) == -1)
98: {
99: fprintf(stderr, "Bad token in port list: %s\n",
100: libnet_geterror(l));
101: exit(1);
102: }
103: break;
104: case 'p':
105: payload = optarg;
106: payload_s = strlen(payload);
107: break;
108: default:
109: usage(argv[0]);
110: exit(EXIT_FAILURE);
111: }
112: }
113:
114: if (!src_ip || !dst_ip || !plist_p)
115: {
116: usage(argv[0]);
117: exit(EXIT_FAILURE);
118: }
119:
120: udp = 0;
121: #if !(__WIN32__)
122: gettimeofday(&s, NULL);
123: #else
124: /* This obviously is not as good - but it compiles now. */
125: s.tv_sec = time(NULL);
126: s.tv_usec = 0;
127: #endif
128:
129: build_ip = 1;
130: while (libnet_plist_chain_next_pair(plist_p, &bport, &eport))
131: {
132: while (!(bport > eport) && bport != 0)
133: {
134: cport = bport++;
135: udp = libnet_build_udp(
136: 1025, /* source port */
137: cport, /* destination port */
138: LIBNET_UDP_H + payload_s, /* packet size */
139: 0, /* checksum */
140: payload, /* payload */
141: payload_s, /* payload size */
142: l, /* libnet handle */
143: udp); /* libnet id */
144: if (udp == -1)
145: {
146: fprintf(stderr, "Can't build UDP header (at port %d): %s\n",
147: cport, libnet_geterror(l));
148: goto bad;
149: }
150: if (build_ip)
151: {
152: build_ip = 0;
153: t = libnet_build_ipv4(
154: LIBNET_IPV4_H + LIBNET_UDP_H + payload_s, /* length */
155: 0, /* TOS */
156: 242, /* IP ID */
157: 0, /* IP Frag */
158: 64, /* TTL */
159: IPPROTO_UDP, /* protocol */
160: 0, /* checksum */
161: src_ip, /* source IP */
162: dst_ip, /* destination IP */
163: NULL, /* payload */
164: 0, /* payload size */
165: l, /* libnet handle */
166: 0);
167: if (t == -1)
168: {
169: fprintf(stderr, "Can't build IP header: %s\n", libnet_geterror(l));
170: goto bad;
171: }
172:
173: t = libnet_build_ethernet(
174: enet_dst, /* ethernet dest */
175: enet_src, /* ethernet source */
176: ETHERTYPE_IP, /* protocol type */
177: NULL, /* payload */
178: 0, /* payload size */
179: l, /* libnet handle */
180: 0);
181: if (t == -1)
182: {
183: fprintf(stderr, "Can't build ethernet header: %s\n",
184: libnet_geterror(l));
185: goto bad;
186: }
187: }
188: c = libnet_write(l);
189: if (c == -1)
190: {
191: fprintf(stderr, "write error: %s\n", libnet_geterror(l));
192: }
193: else
194: {
195: fprintf(stderr, "wrote %d byte UDP packet to port %d\r", c,
196: cport);
197: }
198: }
199: fprintf(stderr, "\n");
200: }
201:
202: #if !(__WIN32__)
203: gettimeofday(&e, NULL);
204: #else
205: /* This obviously is not as good - but it compiles now. */
206: s.tv_sec = time(NULL);
207: s.tv_usec = 0;
208: #endif
209:
210: libnet_timersub(&e, &s, &r);
211: fprintf(stderr, "Total time spent in loop: %d.%d\n", r.tv_sec, r.tv_usec);
212:
213: libnet_stats(l, &ls);
214: fprintf(stderr, "Packets sent: %lld\n"
215: "Packet errors: %lld\n"
216: "Bytes written: %lld\n",
217: ls.packets_sent, ls.packet_errors, ls.bytes_written);
218: libnet_destroy(l);
219: return (EXIT_SUCCESS);
220: bad:
221: libnet_destroy(l);
222: return (EXIT_FAILURE);
223: }
224:
225:
226: void
227: usage(char *name)
228: {
229: fprintf(stderr, "usage: %s -s s_ip -d d_ip -P port list [-p payload]\n", name);
230: }
231:
232: /* EOF */