Mark the TCP header structure as unaligned.

[tcpdump] / util.c

diff --git a/util.c b/util.c
index 6b723e543c603c4314af3053c1d28f89db2fb252..d7aa1fa75c28b871f3724570645caea06002beba 100644 (file)
--- a/util.c
+++ b/util.c
@@ -19,11 +19,6 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/tcpdump/util.c,v 1.109 2007-01-29 09:59:42 hannes Exp $ (LBL)";
-#endif
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -188,12 +183,12 @@ ts_print(register const struct timeval *tvp)
                if (b_sec == 0) {
                         /* init timestamp for first packet */
                         b_usec = tvp->tv_usec;
-                        b_sec = tvp->tv_sec;                        
+                        b_sec = tvp->tv_sec;
                 }
 
                 d_usec = tvp->tv_usec - b_usec;
                 d_sec = tvp->tv_sec - b_sec;
-                
+
                 while (d_usec < 0) {
                     d_usec += 1000000;
                     d_sec--;
@@ -259,21 +254,21 @@ relts_print(int secs)
  */
 
 int
-print_unknown_data(const u_char *cp,const char *ident,int len)
+print_unknown_data(netdissect_options *ndo, const u_char *cp,const char *ident,int len)
 {
        if (len < 0) {
-               printf("%sDissector error: print_unknown_data called with negative length",
-                   ident);
+          ND_PRINT((ndo,"%sDissector error: print_unknown_data called with negative length",
+                   ident));
                return(0);
        }
        if (snapend - cp < len)
                len = snapend - cp;
        if (len < 0) {
-               printf("%sDissector error: print_unknown_data called with pointer past end of packet",
-                   ident);
+          ND_PRINT((ndo,"%sDissector error: print_unknown_data called with pointer past end of packet",
+                   ident));
                return(0);
        }
-        hex_print(ident,cp,len);
+        hex_print(ndo, ident,cp,len);
        return(1); /* everything is ok */
 }
 
@@ -328,7 +323,7 @@ bittok2str_internal(register const struct tok *lp, register const char *fmt,
         register int rotbit; /* this is the bit we rotate through all bitpositions */
         register int tokval;
 
-       while (lp->s != NULL && lp != NULL) {
+       while (lp != NULL && lp->s != NULL) {
             tokval=lp->v;   /* load our first value */
             rotbit=1;
             while (rotbit != 0) {
@@ -415,7 +410,7 @@ tok2strary_internal(register const char **lp, int n, register const char *fmt,
  */
 
 int
-mask2plen (u_int32_t mask)
+mask2plen(u_int32_t mask)
 {
        u_int32_t bitmasks[33] = {
                0x00000000,
@@ -439,6 +434,35 @@ mask2plen (u_int32_t mask)
        return (prefix_len);
 }
 
+#ifdef INET6
+int
+mask62plen(const u_char *mask)
+{
+       u_char bitmasks[9] = {
+               0x00,
+               0x80, 0xc0, 0xe0, 0xf0,
+               0xf8, 0xfc, 0xfe, 0xff
+       };
+       int byte;
+       int cidr_len = 0;
+
+       for (byte = 0; byte < 16; byte++) {
+               u_int bits;
+
+               for (bits = 0; bits < (sizeof (bitmasks) / sizeof (bitmasks[0])); bits++) {
+                       if (mask[byte] == bitmasks[bits]) {
+                               cidr_len += bits;
+                               break;
+                       }
+               }
+
+               if (mask[byte] != 0xff)
+                       break;
+       }
+       return (cidr_len);
+}
+#endif /* INET6 */
+
 /* VARARGS */
 void
 error(const char *fmt, ...)