/*
- * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Support for splitting captures into multiple files with a maximum
+ * file size:
+ *
+ * Copyright (c) 2001
*/
#ifndef lint
static const char copyright[] =
- "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997\n\
+ "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
The Regents of the University of California. All rights reserved.\n";
static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.151 2000-09-17 04:13:13 guy Exp $ (LBL)";
+ "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.184 2002-08-09 13:50:15 risso Exp $ (LBL)";
#endif
/*
#include "config.h"
#endif
-#include <sys/types.h>
-#include <sys/time.h>
+#include <tcpdump-stdinc.h>
-#include <netinet/in.h>
+#ifdef WIN32
+#include "getopt.h"
+#include "w32_fzs.h"
+extern int strcasecmp (const char *__s1, const char *__s2);
+extern int SIZE_BUF;
+#define off_t long
+#define uint UINT
+#endif /* WIN32 */
#include <pcap.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
-#include <ctype.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
#include "interface.h"
#include "addrtoname.h"
int vflag; /* verbose */
int xflag; /* print packet in hex */
int Xflag; /* print packet in ascii as well as hex */
+off_t Cflag = 0; /* rotate dump files after this many bytes */
+int Aflag = 0; /* print packet only in ascii observing LF, CR, TAB, SPACE */
char *espsecret = NULL; /* ESP secret key */
int packettype;
+int infodelay;
+int infoprint;
char *program_name;
static RETSIGTYPE cleanup(int);
static void usage(void) __attribute__((noreturn));
+static void dump_and_trunc(u_char *, const struct pcap_pkthdr *, const u_char *);
+
+#ifdef SIGINFO
+RETSIGTYPE requestinfo(int);
+#endif
+
/* Length of saved portion of packet. */
int snaplen = DEFAULT_SNAPLEN;
int type;
};
-/*
- * This table checks some DLT_* codes as well as checking PCAP_ENCAP_*
- * codes, so that those DLT_* codes that aren't the same on all platforms
- * (and thus don't have values identical to the values of the corresponding
- * PCAP_ENCAP_* codes) are, at least, handled on the platform that wrote
- * the capture file.
- *
- * (This may result in two identical entries in the table, if there's
- * a DLT_* code defined to have the same value as the corresponding
- * PCAP_ENCAP_* code. Those duplicate entries are harmless.)
- */
static struct printer printers[] = {
- /*
- * PCAP_ENCAP_* codes that correspond to DLT_* codes whose values
- * are the same on all platforms (the PCAP_ENCAP_* code values
- * are the same as the DLT_* code values).
- */
- { null_if_print, PCAP_ENCAP_NULL },
- { ether_if_print, PCAP_ENCAP_ETHERNET },
- { token_if_print, PCAP_ENCAP_TOKEN_RING },
- { sl_if_print, PCAP_ENCAP_SLIP },
- { ppp_if_print, PCAP_ENCAP_PPP },
- { fddi_if_print, PCAP_ENCAP_FDDI },
-
- /*
- * DLT_* codes that aren't the same on all platforms.
- */
-#ifdef DLT_ATM_RFC1483
- { atm_if_print, DLT_ATM_RFC1483 },
-#endif
-#ifdef DLT_RAW
- { raw_if_print, DLT_RAW },
-#endif
-#ifdef DLT_SLIP_BSDOS
- { sl_bsdos_if_print, DLT_SLIP_BSDOS },
-#endif
-#ifdef DLT_PPP_BSDOS
- { ppp_bsdos_if_print, DLT_PPP_BSDOS },
+ { arcnet_if_print, DLT_ARCNET },
+ { ether_if_print, DLT_EN10MB },
+ { token_if_print, DLT_IEEE802 },
+#ifdef DLT_LANE8023
+ { lane_if_print, DLT_LANE8023 },
#endif
#ifdef DLT_CIP
{ cip_if_print, DLT_CIP },
#ifdef DLT_ATM_CLIP
{ cip_if_print, DLT_ATM_CLIP },
#endif
-#ifdef DLT_LANE8023
- { lane_if_print, DLT_LANE8023 },
+ { sl_if_print, DLT_SLIP },
+ { sl_bsdos_if_print, DLT_SLIP_BSDOS },
+ { ppp_if_print, DLT_PPP },
+ { ppp_bsdos_if_print, DLT_PPP_BSDOS },
+ { fddi_if_print, DLT_FDDI },
+ { null_if_print, DLT_NULL },
+#ifdef DLT_LOOP
+ { null_if_print, DLT_LOOP },
+#endif
+ { raw_if_print, DLT_RAW },
+ { atm_if_print, DLT_ATM_RFC1483 },
+#ifdef DLT_C_HDLC
+ { chdlc_if_print, DLT_C_HDLC },
+#endif
+#ifdef DLT_HDLC
+ { chdlc_if_print, DLT_HDLC },
+#endif
+#ifdef DLT_PPP_SERIAL
+ { ppp_hdlc_if_print, DLT_PPP_SERIAL },
+#endif
+#ifdef DLT_PPP_ETHER
+ { pppoe_if_print, DLT_PPP_ETHER },
+#endif
+#ifdef DLT_LINUX_SLL
+ { sll_if_print, DLT_LINUX_SLL },
+#endif
+#ifdef DLT_IEEE802_11
+ { ieee802_11_if_print, DLT_IEEE802_11},
+#endif
+#ifdef DLT_LTALK
+ { ltalk_if_print, DLT_LTALK },
+#endif
+#ifdef DLT_PFLOG
+ { pflog_if_print, DLT_PFLOG },
+#endif
+#ifdef DLT_FR
+ { fr_if_print, DLT_FR },
+#endif
+#ifdef DLT_FRELAY
+ { fr_if_print, DLT_FRELAY },
+#endif
+#ifdef DLT_SUNATM
+ { sunatm_if_print, DLT_SUNATM },
#endif
-
- /*
- * PCAP_ENCAP_* codes corresponding to DLT_* codes that aren't
- * necessarily the same on all platforms, and PCAP_ENCAP_* codes
- * for which there aren't DLT_* codes.
- */
- { atm_if_print, PCAP_ENCAP_ATM_RFC1483 },
- { raw_if_print, PCAP_ENCAP_RAW },
- { sl_bsdos_if_print, PCAP_ENCAP_SLIP_BSDOS },
- { ppp_bsdos_if_print, PCAP_ENCAP_PPP_BSDOS },
- { chdlc_if_print, PCAP_ENCAP_C_HDLC },
- { cip_if_print, PCAP_ENCAP_ATM_CLIP },
{ NULL, 0 },
};
extern int opterr;
extern char *optarg;
+struct dump_info {
+ char *WFileName;
+ pcap_t *pd;
+ pcap_dumper_t *p;
+};
+
int
main(int argc, char **argv)
{
register char *cp, *infile, *cmdbuf, *device, *RFileName, *WFileName;
pcap_handler printer;
struct bpf_program fcode;
+#ifndef WIN32
RETSIGTYPE (*oldhandler)(int);
+#endif
+ struct dump_info dumpinfo;
u_char *pcap_userdata;
char ebuf[PCAP_ERRBUF_SIZE];
+#ifdef HAVE_PCAP_FINDALLDEVS
+ pcap_if_t *devpointer;
+ int devnum;
+#endif
+#ifdef WIN32
+ DWORD dwVersion;
+ DWORD dwWindowsMajorVersion;
+ u_int UserBufferSize=1000000;
+#endif
+
+#ifdef WIN32
+ dwVersion=GetVersion(); /* get the OS version */
+ dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
+ if(wsockinit()!=0) return 1;
+#endif /* WIN32 */
cnt = -1;
device = NULL;
#ifdef LIBSMI
smiInit("tcpdump");
#endif
-
+
opterr = 0;
while (
- (op = getopt(argc, argv, "ac:deE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+#ifdef WIN32
+ (op = getopt(argc, argv, "aAB:c:C:dDeE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+#else /* WIN32 */
+#ifdef HAVE_PCAP_FINDALLDEVS
+ (op = getopt(argc, argv, "aAc:C:dDeE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+#else /* HAVE_PCAP_FINDALLDEVS */
+ (op = getopt(argc, argv, "aAc:C:deE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+#endif /* HAVE_PCAP_FINDALLDEVS */
+#endif /* WIN32 */
switch (op) {
case 'a':
++aflag;
break;
+ case 'A':
+ ++xflag;
+ ++Xflag;
+ ++Aflag;
+ break;
+
+#ifdef WIN32
+ case 'B':
+ UserBufferSize = atoi(optarg)*1024;
+ if (UserBufferSize < 0)
+ error("invalid packet buffer size %s", optarg);
+ break;
+#endif /* WIN32 */
+
case 'c':
cnt = atoi(optarg);
if (cnt <= 0)
error("invalid packet count %s", optarg);
break;
+ case 'C':
+ Cflag = atoi(optarg) * 1000000;
+ if (Cflag < 0)
+ error("invalid file size %s", optarg);
+ break;
+
case 'd':
++dflag;
break;
+#ifdef HAVE_PCAP_FINDALLDEVS
+ case 'D':
+ if (pcap_findalldevs(&devpointer, ebuf) < 0)
+ error("%s", ebuf);
+ else {
+ for (i = 0; devpointer != 0; i++) {
+ printf("%d.%s", i+1, devpointer->name);
+ if (devpointer->description != NULL)
+ printf(" (%s)", devpointer->description);
+ printf("\n");
+ devpointer = devpointer->next;
+ }
+ }
+ return 0;
+#endif /* HAVE_PCAP_FINDALLDEVS */
+
case 'e':
++eflag;
break;
break;
case 'i':
+ if (optarg[0] == '0' && optarg[1] == 0)
+ error("Invalid adapter index");
+
+#ifdef HAVE_PCAP_FINDALLDEVS
+ /*
+ * If the argument is a number, treat it as
+ * an index into the list of adapters, as
+ * printed by "tcpdump -D".
+ *
+ * This should be OK on UNIX systems, as interfaces
+ * shouldn't have names that begin with digits.
+ * It can be useful on Windows, where more than
+ * one interface can have the same name.
+ */
+ if ((devnum = atoi(optarg)) != 0) {
+ if (devnum < 0)
+ error("Invalid adapter index");
+
+ if (pcap_findalldevs(&devpointer, ebuf) < 0)
+ error("%s", ebuf);
+ else {
+ for (i = 0; i < devnum-1; i++){
+ devpointer = devpointer->next;
+ if (devpointer == NULL)
+ error("Invalid adapter index");
+ }
+ }
+ device = devpointer->name;
+ break;
+ }
+#endif /* HAVE_PCAP_FINDALLDEVS */
device = optarg;
break;
program_name, optarg);
(void)fprintf(stderr, "(no libsmi support)\n");
#endif
-
+
case 'O':
Oflag = 0;
break;
case 'u':
++uflag;
break;
-
+
case 'v':
++vflag;
break;
break;
case 'X':
- ++xflag;
+ ++xflag;
++Xflag;
break;
* Also, this prevents the user from reading anyone's
* trace file.
*/
+#ifndef WIN32
setuid(getuid());
+#endif /* WIN32 */
pd = pcap_open_offline(RFileName, ebuf);
if (pd == NULL)
if (device == NULL)
error("%s", ebuf);
}
+#ifdef WIN32
+ PrintCapBegins(program_name,device);
+#endif /* WIN32 */
+ *ebuf = '\0';
pd = pcap_open_live(device, snaplen, !pflag, 1000, ebuf);
if (pd == NULL)
error("%s", ebuf);
+ else if (*ebuf)
+ warning("%s", ebuf);
+#ifdef WIN32
+ if(UserBufferSize != 1000000)
+ if(pcap_setbuff(pd, UserBufferSize)==-1){
+ error("%s", pcap_geterr(pd));
+ }
+#endif /* WIN32 */
i = pcap_snapshot(pd);
if (snaplen < i) {
warning("snaplen raised from %d to %d", snaplen, i);
/*
* Let user own process after socket has been opened.
*/
+#ifndef WIN32
setuid(getuid());
+#endif /* WIN32 */
}
if (infile)
cmdbuf = read_infile(infile);
error("%s", pcap_geterr(pd));
if (dflag) {
bpf_dump(&fcode, dflag);
+ pcap_close(pd);
exit(0);
}
init_addrtoname(localnet, netmask);
(void)setsignal(SIGTERM, cleanup);
(void)setsignal(SIGINT, cleanup);
/* Cooperate with nohup(1) */
+#ifndef WIN32
if ((oldhandler = setsignal(SIGHUP, cleanup)) != SIG_DFL)
(void)setsignal(SIGHUP, oldhandler);
+#endif /* WIN32 */
if (pcap_setfilter(pd, &fcode) < 0)
error("%s", pcap_geterr(pd));
pcap_dumper_t *p = pcap_dump_open(pd, WFileName);
if (p == NULL)
error("%s", pcap_geterr(pd));
- printer = pcap_dump;
- pcap_userdata = (u_char *)p;
+ if (Cflag != 0) {
+ printer = dump_and_trunc;
+ dumpinfo.WFileName = WFileName;
+ dumpinfo.pd = pd;
+ dumpinfo.p = p;
+ pcap_userdata = (u_char *)&dumpinfo;
+ } else {
+ printer = pcap_dump;
+ pcap_userdata = (u_char *)p;
+ }
} else {
printer = lookup_printer(pcap_datalink(pd));
pcap_userdata = 0;
+#ifdef SIGINFO
+ (void)setsignal(SIGINFO, requestinfo);
+#endif
}
+#ifndef WIN32
if (RFileName == NULL) {
(void)fprintf(stderr, "%s: listening on %s\n",
program_name, device);
(void)fflush(stderr);
}
+#endif /* WIN32 */
if (pcap_loop(pd, cnt, printer, pcap_userdata) < 0) {
(void)fprintf(stderr, "%s: pcap_loop: %s\n",
program_name, pcap_geterr(pd));
+ cleanup(0);
+ pcap_close(pd);
exit(1);
}
+ if (RFileName == NULL)
+ info(1);
pcap_close(pd);
exit(0);
}
static RETSIGTYPE
cleanup(int signo)
{
- struct pcap_stat stat;
/* Can't print the summary if reading from a savefile */
if (pd != NULL && pcap_file(pd) == NULL) {
(void)fflush(stdout);
putc('\n', stderr);
- if (pcap_stats(pd, &stat) < 0)
- (void)fprintf(stderr, "pcap_stats: %s\n",
- pcap_geterr(pd));
- else {
- (void)fprintf(stderr, "%d packets received by filter\n",
- stat.ps_recv);
- (void)fprintf(stderr, "%d packets dropped by kernel\n",
- stat.ps_drop);
- }
+ info(1);
+ }
+ if (signo)
+ exit(0);
+}
+
+void
+info(register int verbose)
+{
+ struct pcap_stat stat;
+
+ if (pcap_stats(pd, &stat) < 0) {
+ (void)fprintf(stderr, "pcap_stats: %s\n", pcap_geterr(pd));
+ return;
+ }
+
+ if (!verbose)
+ fprintf(stderr, "%s: ", program_name);
+
+ (void)fprintf(stderr, "%d packets received by filter", stat.ps_recv);
+ if (!verbose)
+ fputs(", ", stderr);
+ else
+ putc('\n', stderr);
+ (void)fprintf(stderr, "%d packets dropped by kernel\n", stat.ps_drop);
+ infoprint = 0;
+}
+
+static void
+reverse(char *s)
+{
+ int i, j, c;
+
+ for (i = 0, j = strlen(s) - 1; i < j; i++, j--) {
+ c = s[i];
+ s[i] = s[j];
+ s[j] = c;
}
- exit(0);
+}
+
+
+static void
+swebitoa(unsigned int n, char *s)
+{
+ unsigned int i;
+
+ i = 0;
+ do {
+ s[i++] = n % 10 + '0';
+ } while ((n /= 10) > 0);
+
+ s[i] = '\0';
+ reverse(s);
+}
+
+static void
+dump_and_trunc(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
+{
+ struct dump_info *info;
+ static uint cnt = 2;
+ char *name;
+
+ info = (struct dump_info *)user;
+
+ /*
+ * XXX - this won't prevent capture files from getting
+ * larger than Cflag - the last packet written to the
+ * file could put it over Cflag.
+ */
+ if (ftell((FILE *)info->p) > Cflag) {
+ name = (char *) malloc(strlen(info->WFileName) + 4);
+ if (name == NULL)
+ error("dump_and_trunc: malloc");
+ strcpy(name, info->WFileName);
+ swebitoa(cnt, name + strlen(info->WFileName));
+ cnt++;
+ pcap_dump_close(info->p);
+ info->p = pcap_dump_open(info->pd, name);
+ free(name);
+ if (info->p == NULL)
+ error("%s", pcap_geterr(pd));
+ }
+
+ pcap_dump((u_char *)info->p, h, sp);
}
/* Like default_print() but data need not be aligned */
}
}
+#ifdef WIN32
+ /*
+ * XXX - there should really be libpcap calls to get the version
+ * number as a string (the string would be generated from #defines
+ * at run time, so that it's not generated from string constants
+ * in the library, as, on many UNIX systems, those constants would
+ * be statically linked into the application executable image, and
+ * would thus reflect the version of libpcap on the system on
+ * which the application was *linked*, not the system on which it's
+ * *running*.
+ *
+ * That routine should be documented, unlike the "version[]"
+ * string, so that UNIX vendors providing their own libpcaps
+ * don't omit it (as a couple of vendors have...).
+ *
+ * Packet.dll should perhaps also export a routine to return the
+ * version number of the Packet.dll code, to supply the
+ * "Wpcap_version" information on Windows.
+ */
+ char WDversion[]="current-cvs.tcpdump.org";
+ char version[]="current-cvs.tcpdump.org";
+ char pcap_version[]="current-cvs.tcpdump.org";
+ char Wpcap_version[]="3.0 alpha";
+#endif
+
/*
* By default, print the packet out in hex.
*/
default_print_unaligned(bp, length);
}
+#ifdef SIGINFO
+RETSIGTYPE requestinfo(int signo)
+{
+ if (infodelay)
+ ++infoprint;
+ else
+ info(0);
+}
+#endif
+
static void
usage(void)
{
extern char version[];
extern char pcap_version[];
+#ifdef WIN32
+ (void)fprintf(stderr, "%s version %s, based on tcpdump version %s\n", program_name, WDversion, version);
+ (void)fprintf(stderr, "WinPcap version %s, based on libpcap version %s\n",Wpcap_version, pcap_version);
+#else
(void)fprintf(stderr, "%s version %s\n", program_name, version);
(void)fprintf(stderr, "libpcap version %s\n", pcap_version);
+#endif /* WIN32 */
(void)fprintf(stderr,
-"Usage: %s [-adeflnNOpqStuvxX] [-c count] [ -F file ]\n", program_name);
+#ifdef WIN32
+"Usage: %s [-aAdDeflnNOpqRStuvxX] [-B size] [-c count] [ -C file_size ]\n", program_name);
+#else /* WIN32 */
+#ifdef HAVE_PCAP_FINDALLDEVS
+"Usage: %s [-aAdDeflnNOpqRStuvxX] [-c count] [ -C file_size ]\n", program_name);
+#else /* HAVE_PCAP_FINDALLDEVS */
+"Usage: %s [-aAdeflnNOpqRStuvxX] [-c count] [ -C file_size ]\n", program_name);
+#endif /* HAVE_PCAP_FINDALLDEVS */
+#endif /* WIN32 */
(void)fprintf(stderr,
-"\t\t[ -i interface ] [ -r file ] [ -s snaplen ]\n");
+"\t\t[ -F file ] [ -i interface ] [ -r file ] [ -s snaplen ]\n");
(void)fprintf(stderr,
-"\t\t[ -T type ] [ -w file ] [ expression ]\n");
- exit(-1);
+"\t\t[ -T type ] [ -w file ] [ -E algo:secret ] [ expression ]\n");
+ exit(1);
}
projects / tcpdump / blobdiff