2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25 static const char copyright[] _U_ =
26 "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
27 The Regents of the University of California. All rights reserved.\n";
42 #include "pcap/funcattrs.h"
45 #include "portability.h"
48 #define MAXIMUM_SNAPLEN 65535
50 static char *program_name;
53 static void PCAP_NORETURN usage(void);
54 static void PCAP_NORETURN error(const char *, ...) PCAP_PRINTFLIKE(1, 2);
55 static void warning(const char *, ...) PCAP_PRINTFLIKE(1, 2);
58 main(int argc, char **argv)
61 register char *cp, *device;
62 int dorfmon, dopromisc, snaplen, useactivate, bufsize;
63 char ebuf[PCAP_ERRBUF_SIZE];
71 snaplen = MAXIMUM_SNAPLEN;
74 if ((cp = strrchr(argv[0], '/')) != NULL)
75 program_name = cp + 1;
77 program_name = argv[0];
80 while ((op = getopt(argc, argv, "i:Ips:aB:")) != -1) {
89 useactivate = 1; /* required for rfmon */
99 snaplen = strtol(optarg, &end, 0);
100 if (optarg == end || *end != '\0'
101 || snaplen < 0 || snaplen > MAXIMUM_SNAPLEN)
102 error("invalid snaplen %s", optarg);
103 else if (snaplen == 0)
104 snaplen = MAXIMUM_SNAPLEN;
109 bufsize = atoi(optarg)*1024;
111 error("invalid packet buffer size %s", optarg);
112 useactivate = 1; /* required for bufsize */
125 if (device == NULL) {
126 if (pcap_findalldevs(&devlist, ebuf) == -1)
129 error("no interfaces available for capture");
130 device = strdup(devlist->name);
131 pcap_freealldevs(devlist);
134 pd = pcap_create(device, ebuf);
136 error("%s: pcap_create failed: %s", device, ebuf);
137 status = pcap_set_snaplen(pd, snaplen);
139 error("%s: pcap_set_snaplen failed: %s",
140 device, pcap_statustostr(status));
142 status = pcap_set_promisc(pd, 1);
144 error("%s: pcap_set_promisc failed: %s",
145 device, pcap_statustostr(status));
148 status = pcap_set_rfmon(pd, 1);
150 error("%s: pcap_set_rfmon failed: %s",
151 device, pcap_statustostr(status));
153 status = pcap_set_timeout(pd, 1000);
155 error("%s: pcap_set_timeout failed: %s",
156 device, pcap_statustostr(status));
158 status = pcap_set_buffer_size(pd, bufsize);
160 error("%s: pcap_set_buffer_size failed: %s",
161 device, pcap_statustostr(status));
163 status = pcap_activate(pd);
166 * pcap_activate() failed.
168 error("%s: %s\n(%s)", device,
169 pcap_statustostr(status), pcap_geterr(pd));
170 } else if (status > 0) {
172 * pcap_activate() succeeded, but it's warning us
173 * of a problem it had.
175 warning("%s: %s\n(%s)", device,
176 pcap_statustostr(status), pcap_geterr(pd));
178 printf("%s opened successfully\n", device);
181 pd = pcap_open_live(device, 65535, 0, 1000, ebuf);
187 printf("%s opened successfully\n", device);
190 exit(status < 0 ? 1 : 0);
196 (void)fprintf(stderr,
197 "Usage: %s [ -Ipa ] [ -i interface ] [ -s snaplen ] [ -B bufsize ]\n",
204 error(const char *fmt, ...)
208 (void)fprintf(stderr, "%s: ", program_name);
210 (void)vfprintf(stderr, fmt, ap);
215 (void)fputc('\n', stderr);
223 warning(const char *fmt, ...)
227 (void)fprintf(stderr, "%s: WARNING: ", program_name);
229 (void)vfprintf(stderr, fmt, ap);
234 (void)fputc('\n', stderr);