Allow tcpdump to work with earlier libpcaps.

[tcpdump] / tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index f44db004783dd7e93439c2ba558616992d836550..566ec89893c97cb25147a78baaf4adf8b1adb529 100644 (file)
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -24,7 +24,7 @@ static const char copyright[] =
     "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997\n\
 The Regents of the University of California.  All rights reserved.\n";
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.145 2000-04-27 10:05:31 itojun Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.156 2000-12-09 02:58:48 fenner Exp $ (LBL)";
 #endif
 
 /*
@@ -52,8 +52,6 @@ static const char rcsid[] =
 #include <unistd.h>
 #include <ctype.h>
 
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
 
 #include "interface.h"
 #include "addrtoname.h"
@@ -74,6 +72,7 @@ int Rflag = 1;                        /* print sequence # field in AH/ESP*/
 int sflag = 0;                 /* use the libsmi to translate OIDs */
 int Sflag;                     /* print raw TCP sequence numbers */
 int tflag = 1;                 /* print packet arrival time */
+int uflag = 0;                 /* Print undecoded NFS handles */
 int vflag;                     /* verbose */
 int xflag;                     /* print packet in hex */
 int Xflag;                     /* print packet in ascii as well as hex */
@@ -87,12 +86,9 @@ char *program_name;
 
 int32_t thiszone;              /* seconds offset from gmt to local time */
 
-/* Externs */
-extern void bpf_dump(struct bpf_program *, int);
-
 /* Forwards */
-RETSIGTYPE cleanup(int);
-extern __dead void usage(void) __attribute__((volatile));
+static RETSIGTYPE cleanup(int);
+static void usage(void) __attribute__((noreturn));
 
 /* Length of saved portion of packet. */
 int snaplen = DEFAULT_SNAPLEN;
@@ -104,12 +100,15 @@ struct printer {
 
 static struct printer printers[] = {
        { ether_if_print,       DLT_EN10MB },
-       { ether_if_print,       DLT_IEEE802 },
+       { token_if_print,       DLT_IEEE802 },
 #ifdef DLT_LANE8023
        { lane_if_print,        DLT_LANE8023 },
 #endif
 #ifdef DLT_CIP
        { cip_if_print,         DLT_CIP },
+#endif
+#ifdef DLT_ATM_CLIP
+       { cip_if_print,         DLT_ATM_CLIP },
 #endif
        { sl_if_print,          DLT_SLIP },
        { sl_bsdos_if_print,    DLT_SLIP_BSDOS },
@@ -119,8 +118,11 @@ static struct printer printers[] = {
        { null_if_print,        DLT_NULL },
        { raw_if_print,         DLT_RAW },
        { atm_if_print,         DLT_ATM_RFC1483 },
-#ifdef DLT_CHDLC
-       { chdlc_if_print,       DLT_CHDLC },
+#ifdef DLT_C_HDLC
+       { chdlc_if_print,       DLT_C_HDLC },
+#endif
+#ifdef DLT_PPP_SERIAL
+       { ppp_hdlc_if_print,    DLT_PPP_SERIAL },
 #endif
        { NULL,                 0 },
 };
@@ -134,7 +136,7 @@ lookup_printer(int type)
                if (type == p->type)
                        return p->f;
 
-       error("unknown data link type 0x%x", type);
+       error("unknown data link type %d", type);
        /* NOTREACHED */
 }
 
@@ -175,7 +177,7 @@ main(int argc, char **argv)
        
        opterr = 0;
        while (
-           (op = getopt(argc, argv, "ac:deE:fF:i:lm:nNOpqr:Rs:StT:vw:xXY")) != EOF)
+           (op = getopt(argc, argv, "ac:deE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
                switch (op) {
 
                case 'a':
@@ -302,6 +304,10 @@ main(int argc, char **argv)
                                error("unknown packet type `%s'", optarg);
                        break;
 
+               case 'u':
+                       ++uflag;
+                       break;
+                       
                case 'v':
                        ++vflag;
                        break;
@@ -424,7 +430,7 @@ main(int argc, char **argv)
 }
 
 /* make a clean exit on interrupts */
-RETSIGTYPE
+static RETSIGTYPE
 cleanup(int signo)
 {
        struct pcap_stat stat;
@@ -478,10 +484,10 @@ default_print_unaligned(register const u_char *cp, register u_int length)
 void
 default_print(register const u_char *bp, register u_int length)
 {
-  default_print_unaligned(bp, length);
+       default_print_unaligned(bp, length);
 }
 
-__dead void
+static void
 usage(void)
 {
        extern char version[];
@@ -490,7 +496,7 @@ usage(void)
        (void)fprintf(stderr, "%s version %s\n", program_name, version);
        (void)fprintf(stderr, "libpcap version %s\n", pcap_version);
        (void)fprintf(stderr,
-"Usage: %s [-adeflnNOpqStvxX] [-c count] [ -F file ]\n", program_name);
+"Usage: %s [-adeflnNOpqStuvxX] [-c count] [ -F file ]\n", program_name);
        (void)fprintf(stderr,
 "\t\t[ -i interface ] [ -r file ] [ -s snaplen ]\n");
        (void)fprintf(stderr,