]> The Tcpdump Group git mirrors - tcpdump/blobdiff - tcpdump.c
Add support for DLT_PRISM and DLT_IEEE802_11_RADIO.
[tcpdump] / tcpdump.c
index 5437cee765c18cb1430d1988d3d10c70653935fb..6b02404ae2aaacf54de8173313392b09020ca3e3 100644 (file)
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -30,7 +30,7 @@ static const char copyright[] =
     "@(#) 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 1.182 2002-08-03 23:16:57 guy Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/tcpdump.c,v 1.189 2002-12-12 07:28:36 guy Exp $ (LBL)";
 #endif
 
 /*
@@ -104,7 +104,8 @@ int32_t thiszone;           /* seconds offset from gmt to local time */
 static RETSIGTYPE cleanup(int);
 static void usage(void) __attribute__((noreturn));
 
-static void dump_and_trunc(u_char *, const struct pcap_pkthdr *, const u_char *);
+static void dump_packet_and_trunc(u_char *, const struct pcap_pkthdr *, const u_char *);
+static void dump_packet(u_char *, const struct pcap_pkthdr *, const u_char *);
 
 #ifdef SIGINFO
 RETSIGTYPE requestinfo(int);
@@ -174,6 +175,15 @@ static struct printer printers[] = {
 #endif
 #ifdef DLT_SUNATM
        { sunatm_if_print,      DLT_SUNATM },
+#endif
+#ifdef DLT_IP_OVER_FC
+       { ipfc_if_print,        DLT_IP_OVER_FC },
+#endif
+#ifdef DLT_PRISM_HEADER
+       { prism_if_print,       DLT_PRISM_HEADER },
+#endif
+#ifdef DLT_IEEE802_11_RADIO
+       { ieee802_11_radio_if_print,    DLT_IEEE802_11_RADIO },
 #endif
        { NULL,                 0 },
 };
@@ -222,7 +232,6 @@ main(int argc, char **argv)
        int devnum;
 #endif
 #ifdef WIN32
-       int ii;
        DWORD dwVersion;
        DWORD dwWindowsMajorVersion;
        u_int UserBufferSize=1000000;
@@ -254,12 +263,12 @@ main(int argc, char **argv)
        opterr = 0;
        while (
 #ifdef WIN32
-           (op = getopt(argc, argv, "aB:c:C:dDeE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+           (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, "ac:C:dDeE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+           (op = getopt(argc, argv, "aAc:C:dDeE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
 #else /* HAVE_PCAP_FINDALLDEVS */
-           (op = getopt(argc, argv, "ac:C:deE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
+           (op = getopt(argc, argv, "aAc:C:deE:fF:i:lm:nNOpqr:Rs:StT:uvw:xXY")) != -1)
 #endif /* HAVE_PCAP_FINDALLDEVS */
 #endif /* WIN32 */
                switch (op) {
@@ -476,12 +485,17 @@ main(int argc, char **argv)
                        ++Xflag;
                        break;
 
-#ifdef YYDEBUG
+#if defined(HAVE_PCAP_DEBUG) || defined(HAVE_YYDEBUG)
                case 'Y':
                        {
                        /* Undocumented flag */
+#ifdef HAVE_PCAP_DEBUG
+                       extern int pcap_debug;
+                       pcap_debug = 1;
+#else
                        extern int yydebug;
                        yydebug = 1;
+#endif
                        }
                        break;
 #endif
@@ -520,21 +534,7 @@ main(int argc, char **argv)
                                error("%s", ebuf);
                }
 #ifdef WIN32
-               else
-               {
-                       if (!(dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4))                   /* Windows '95 */
-                       {
-                               if(device[1]!=0)
-                                       device=(char*)SChar2WChar(device);
-                       }
-                       else{
-                               for (ii=0;ii<(signed)strlen(device);ii++)
-                               for (ii=strlen(device)-1;ii>0&&(device[ii]==' '||device[ii]=='\t');ii--)device[ii]='\0';
-                               for (ii=0;ii<(signed)strlen(device)&&(device[ii]==' '||device[ii]=='\t');ii++);
-                               strcpy(device,device+ii);
-                       }
-               }
-               PrintCapBegins (program_name,device);
+               PrintCapBegins(program_name,device);
 #endif /* WIN32 */
                *ebuf = '\0';
                pd = pcap_open_live(device, snaplen, !pflag, 1000, ebuf);
@@ -574,9 +574,7 @@ main(int argc, char **argv)
                error("%s", pcap_geterr(pd));
        if (dflag) {
                bpf_dump(&fcode, dflag);
-#ifdef WIN32
-           pcap_close(pd);
-#endif /* WIN32 */
+               pcap_close(pd);
                exit(0);
        }
        init_addrtoname(localnet, netmask);
@@ -596,22 +594,22 @@ main(int argc, char **argv)
                if (p == NULL)
                        error("%s", pcap_geterr(pd));
                if (Cflag != 0) {
-                       printer = dump_and_trunc;
+                       printer = dump_packet_and_trunc;
                        dumpinfo.WFileName = WFileName;
                        dumpinfo.pd = pd;
                        dumpinfo.p = p;
                        pcap_userdata = (u_char *)&dumpinfo;
                } else {
-                       printer = pcap_dump;
+                       printer = dump_packet;
                        pcap_userdata = (u_char *)p;
                }
        } else {
                printer = lookup_printer(pcap_datalink(pd));
                pcap_userdata = 0;
+       }
 #ifdef SIGINFO
-               (void)setsignal(SIGINFO, requestinfo);
+       (void)setsignal(SIGINFO, requestinfo);
 #endif
-       }
 #ifndef WIN32
        if (RFileName == NULL) {
                (void)fprintf(stderr, "%s: listening on %s\n",
@@ -697,34 +695,52 @@ swebitoa(unsigned int n, char *s)
 }
 
 static void
-dump_and_trunc(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
+dump_packet_and_trunc(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
 {
-       struct dump_info *info;
+       struct dump_info *dump_info;
        static uint cnt = 2;
        char *name;
 
-       info = (struct dump_info *)user;
+       ++infodelay;
+
+       dump_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 (ftell((FILE *)dump_info->p) > Cflag) {
+               name = (char *) malloc(strlen(dump_info->WFileName) + 4);
                if (name == NULL)
-                       error("dump_and_trunc: malloc");
-               strcpy(name, info->WFileName);
-               swebitoa(cnt, name + strlen(info->WFileName));
+                       error("dump_packet_and_trunc: malloc");
+               strcpy(name, dump_info->WFileName);
+               swebitoa(cnt, name + strlen(dump_info->WFileName));
                cnt++;
-               pcap_dump_close(info->p);
-               info->p = pcap_dump_open(info->pd, name);
+               pcap_dump_close(dump_info->p);
+               dump_info->p = pcap_dump_open(dump_info->pd, name);
                free(name);
-               if (info->p == NULL)
+               if (dump_info->p == NULL)
                        error("%s", pcap_geterr(pd));
        }
 
-       pcap_dump((u_char *)info->p, h, sp);
+       pcap_dump((u_char *)dump_info->p, h, sp);
+
+       --infodelay;
+       if (infoprint)
+               info(0);
+}
+
+static void
+dump_packet(u_char *user, const struct pcap_pkthdr *h, const u_char *sp)
+{
+       ++infodelay;
+
+       pcap_dump(user, h, sp);
+
+       --infodelay;
+       if (infoprint)
+               info(0);
 }
 
 /* Like default_print() but data need not be aligned */
@@ -754,6 +770,24 @@ default_print_unaligned(register const u_char *cp, register u_int length)
 }
 
 #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";
@@ -770,7 +804,7 @@ default_print(register const u_char *bp, register u_int length)
 }
 
 #ifdef SIGINFO
-RETSIGTYPE requestinfo(int signo)
+RETSIGTYPE requestinfo(int signo _U_)
 {
        if (infodelay)
                ++infoprint;
@@ -783,7 +817,11 @@ static void
 usage(void)
 {
        extern char version[];
+#if defined(WIN32) || defined(HAVE_PCAP_VERSION)
        extern char pcap_version[];
+#else
+       static char pcap_version[] = "unknown";
+#endif
 
 #ifdef WIN32
        (void)fprintf(stderr, "%s version %s, based on tcpdump version %s\n", program_name, WDversion, version);
@@ -794,12 +832,12 @@ usage(void)
 #endif /* WIN32 */
        (void)fprintf(stderr,
 #ifdef WIN32
-"Usage: %s [-adDeflnNOpqStuvxX] [-B size] [-c count] [ -C file_size ]\n", program_name);
+"Usage: %s [-aAdDeflnNOpqRStuvxX] [-B size] [-c count] [ -C file_size ]\n", program_name);
 #else /* WIN32 */
 #ifdef HAVE_PCAP_FINDALLDEVS
-"Usage: %s [-adDeflnNOpqStuvxX] [-c count] [ -C file_size ]\n", program_name);
+"Usage: %s [-aAdDeflnNOpqRStuvxX] [-c count] [ -C file_size ]\n", program_name);
 #else /* HAVE_PCAP_FINDALLDEVS */
-"Usage: %s [-adeflnNOpqStuvxX] [-c count] [ -C file_size ]\n", program_name);
+"Usage: %s [-aAdeflnNOpqRStuvxX] [-c count] [ -C file_size ]\n", program_name);
 #endif /* HAVE_PCAP_FINDALLDEVS */
 #endif /* WIN32 */
        (void)fprintf(stderr,