/*
- * 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
#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 1.152 2000-09-18 05:11:44 guy Exp $ (LBL)";
+ "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.167 2001-10-01 01:12:01 mcr Exp $ (LBL)";
#endif
/*
#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 */
char *espsecret = NULL; /* ESP secret key */
int packettype;
+int infodelay;
+int infoprint;
char *program_name;
+char *WFileName;
int32_t thiszone; /* seconds offset from gmt to local time */
static RETSIGTYPE cleanup(int);
static void usage(void) __attribute__((noreturn));
+extern void dump_and_trunc(u_char *user, const struct pcap_pkthdr *h, const u_char *sp);
+
+#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, or that
- * aren't present 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
-
- /*
- * 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 },
- { ppp_hdlc_if_print, PCAP_ENCAP_PPP_HDLC },
+#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
{ NULL, 0 },
};
/* NOTREACHED */
}
-static pcap_t *pd;
+pcap_t *pd;
extern int optind;
extern int opterr;
{
register int cnt, op, i;
bpf_u_int32 localnet, netmask;
- register char *cp, *infile, *cmdbuf, *device, *RFileName, *WFileName;
+ register char *cp, *infile, *cmdbuf, *device, *RFileName;
+ extern char *WFileName;
pcap_handler printer;
struct bpf_program fcode;
RETSIGTYPE (*oldhandler)(int);
opterr = 0;
while (
- (op = getopt(argc, argv, "ac:deE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+ (op = getopt(argc, argv, "ac:C:deE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
switch (op) {
case 'a':
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;
if (device == NULL)
error("%s", ebuf);
}
+ *ebuf = '\0';
pd = pcap_open_live(device, snaplen, !pflag, 1000, ebuf);
if (pd == NULL)
error("%s", ebuf);
+ else if (*ebuf)
+ warning("%s", ebuf);
i = pcap_snapshot(pd);
if (snaplen < i) {
warning("snaplen raised from %d to %d", snaplen, i);
pcap_dumper_t *p = pcap_dump_open(pd, WFileName);
if (p == NULL)
error("%s", pcap_geterr(pd));
- printer = pcap_dump;
+ printer = dump_and_trunc;
pcap_userdata = (u_char *)p;
} else {
printer = lookup_printer(pcap_datalink(pd));
pcap_userdata = 0;
+#ifdef SIGINFO
+ (void)setsignal(SIGINFO, requestinfo);
+#endif
}
+
if (RFileName == NULL) {
(void)fprintf(stderr, "%s: listening on %s\n",
program_name, device);
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);
}
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;
+}
+
/* Like default_print() but data need not be aligned */
void
default_print_unaligned(register const u_char *cp, register u_int length)
default_print_unaligned(bp, length);
}
+#ifdef SIGINFO
+RETSIGTYPE requestinfo(int signo)
+{
+ if (infodelay)
+ ++infoprint;
+ else
+ info(0);
+}
+#endif
+
static void
usage(void)
{
"\t\t[ -i interface ] [ -r file ] [ -s snaplen ]\n");
(void)fprintf(stderr,
"\t\t[ -T type ] [ -w file ] [ expression ]\n");
- exit(-1);
+ exit(1);
}
projects / tcpdump / blobdiff