Remove the -a flag. It's nonsensical to apply the local netmask to all

[tcpdump] / print-ip6.c

diff --git a/print-ip6.c b/print-ip6.c
index 1965c3fd295a9eea36a1229544ce5a0f742062e6..ee3df72d6a24dfac657af8d53fb26205ad1cbe9b 100644 (file)
--- a/print-ip6.c
+++ b/print-ip6.c
@@ -21,7 +21,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-ip6.c,v 1.17 2001-08-20 17:52:40 fenner Exp $";
+    "@(#) $Header: /tcpdump/master/tcpdump/print-ip6.c,v 1.31 2003-06-07 11:57:54 guy Exp $";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -30,67 +30,43 @@ static const char rcsid[] =
 
 #ifdef INET6
 
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
+#include <tcpdump-stdinc.h>
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <string.h>
 
 #include "interface.h"
 #include "addrtoname.h"
+#include "extract.h"
 
 #include "ip6.h"
+#include "ipproto.h"
 
 /*
  * print an IP6 datagram.
  */
 void
-ip6_print(register const u_char *bp, register int length)
+ip6_print(register const u_char *bp, register u_int length)
 {
        register const struct ip6_hdr *ip6;
        register int advance;
-       register int len;
+       register u_int len;
        register const u_char *cp;
        int nh;
        int fragmented = 0;
        u_int flow;
-       
+
        ip6 = (const struct ip6_hdr *)bp;
 
-#ifdef LBL_ALIGN
-       /*
-        * The IP6 header is not 16-byte aligned, so copy into abuf.
-        * This will never happen with BPF.  It does happen raw packet
-        * dumps from -r.
-        */
-       if ((u_long)ip6 & 15) {
-               static u_char *abuf;
-
-               if (abuf == NULL)
-                       abuf = malloc(snaplen);
-               memcpy(abuf, ip6, min(length, snaplen));
-               snapend += abuf - (u_char *)ip6;
-               packetp = abuf;
-               ip6 = (struct ip6_hdr *)abuf;
-       }
-#endif
-       if ((u_char *)(ip6 + 1) > snapend) {
-               printf("[|ip6]");
-               return;
-       }
+       TCHECK(*ip6);
        if (length < sizeof (struct ip6_hdr)) {
                (void)printf("truncated-ip6 %d", length);
                return;
        }
        advance = sizeof(struct ip6_hdr);
 
-       len = ntohs(ip6->ip6_plen);
+       len = EXTRACT_16BITS(&ip6->ip6_plen);
        if (length < len + advance)
                (void)printf("truncated-ip6 - %d bytes missing!",
                        len + advance - length);
@@ -100,8 +76,9 @@ ip6_print(register const u_char *bp, register int length)
        while (cp < snapend) {
                cp += advance;
 
-               if (cp == (u_char *)(ip6 + 1)
-                && nh != IPPROTO_TCP && nh != IPPROTO_UDP) {
+               if (cp == (const u_char *)(ip6 + 1)
+                && nh != IPPROTO_TCP && nh != IPPROTO_UDP
+                && nh != IPPROTO_SCTP) {
                        (void)printf("%s > %s: ", ip6addr_string(&ip6->ip6_src),
                                     ip6addr_string(&ip6->ip6_dst));
                }
@@ -122,10 +99,23 @@ ip6_print(register const u_char *bp, register int length)
                        nh = *cp;
                        fragmented = 1;
                        break;
+
+               case IPPROTO_MOBILITY:
+                       /*
+                        * XXX - we don't use "advance"; is this
+                        * header always a final header?
+                        */
+                       advance = mobility_print(cp, (const u_char *)ip6);
+                       nh = *cp;
+                       goto end;
                case IPPROTO_ROUTING:
                        advance = rt6_print(cp, (const u_char *)ip6);
                        nh = *cp;
                        break;
+               case IPPROTO_SCTP:
+                       sctp_print(cp, (const u_char *)ip6, 
+                               len + sizeof(struct ip6_hdr) - (cp - bp));
+                       goto end;
                case IPPROTO_TCP:
                        tcp_print(cp, len + sizeof(struct ip6_hdr) - (cp - bp),
                                (const u_char *)ip6, fragmented);
@@ -135,10 +125,10 @@ ip6_print(register const u_char *bp, register int length)
                                (const u_char *)ip6, fragmented);
                        goto end;
                case IPPROTO_ICMPV6:
-                       icmp6_print(cp, (const u_char *)ip6);
+                       icmp6_print(cp, (const u_char *)ip6, fragmented);
                        goto end;
                case IPPROTO_AH:
-                       advance = ah_print(cp, (const u_char *)ip6);
+                       advance = ah_print(cp);
                        nh = *cp;
                        break;
                case IPPROTO_ESP:
@@ -151,40 +141,31 @@ ip6_print(register const u_char *bp, register int length)
                        len -= padlen;
                        break;
                    }
-#ifndef IPPROTO_IPCOMP
-#define IPPROTO_IPCOMP 108
-#endif
                case IPPROTO_IPCOMP:
                    {
                        int enh;
-                       advance = ipcomp_print(cp, (const u_char *)ip6, &enh);
+                       advance = ipcomp_print(cp, &enh);
                        if (enh < 0)
                                goto end;
                        nh = enh & 0xff;
                        break;
                    }
 
-#ifndef IPPROTO_PIM
-#define IPPROTO_PIM    103
-#endif
                case IPPROTO_PIM:
                        pim_print(cp, len);
                        goto end;
-#ifndef IPPROTO_OSPF
-#define IPPROTO_OSPF 89
-#endif
                case IPPROTO_OSPF:
                        ospf6_print(cp, len);
                        goto end;
+
                case IPPROTO_IPV6:
                        ip6_print(cp, len);
                        goto end;
-#ifndef IPPROTO_IPV4
-#define IPPROTO_IPV4   4
-#endif
+
                case IPPROTO_IPV4:
                        ip_print(cp, len);
                        goto end;
+
                case IPPROTO_NONE:
                        (void)printf("no next header");
                        goto end;
@@ -196,8 +177,8 @@ ip6_print(register const u_char *bp, register int length)
        }
 
  end:
-       
-       flow = ntohl(ip6->ip6_flow);
+
+       flow = EXTRACT_32BITS(&ip6->ip6_flow);
 #if 0
        /* rfc1883 */
        if (flow & 0x0f000000)
@@ -222,6 +203,9 @@ ip6_print(register const u_char *bp, register int length)
                        (void)printf(", hlim %d", (int)ip6->ip6_hlim);
                printf(")");
        }
+       return;
+trunc:
+       (void)printf("[|ip6]");
 }
 
 #endif /* INET6 */