/*
- * 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 1.166 2001-07-04 22:03:13 fenner 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 packettype;
+int infodelay;
+int infoprint;
char *program_name;
/* Forwards */
static RETSIGTYPE cleanup(int);
static void usage(void) __attribute__((noreturn));
+#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 },
};
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);
} 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",
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