More UNALIGNED_MEM{CPY,CMP} on IP addresses.

[tcpdump] / print-ah.c

diff --git a/print-ah.c b/print-ah.c
index b2441aaa2d80522e0c5a94e0065b01b18efdb705..a37574d14e8af4acb36450e3f8357b5c98f5c0fe 100644 (file)
--- a/print-ah.c
+++ b/print-ah.c
@@ -21,21 +21,11 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-ah.c,v 1.14 2000-12-12 09:58:40 itojun Exp $ (LBL)";
-#endif
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#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>
 
@@ -43,34 +33,34 @@ static const char rcsid[] =
 
 #include "interface.h"
 #include "addrtoname.h"
+#include "extract.h"
 
 int
-ah_print(register const u_char *bp, register const u_char *bp2)
+ah_print(register const u_char *bp)
 {
        register const struct ah *ah;
        register const u_char *ep;
        int sumlen;
        u_int32_t spi;
 
-       ah = (struct ah *)bp;
+       ah = (const struct ah *)bp;
        ep = snapend;           /* 'ep' points to the end of available data. */
 
-       if ((u_char *)(ah + 1) >= ep - sizeof(struct ah))
-               goto trunc;
+       TCHECK(*ah);
 
        sumlen = ah->ah_len << 2;
-       spi = (u_int32_t)ntohl(ah->ah_spi);
+       spi = EXTRACT_32BITS(&ah->ah_spi);
 
        printf("AH(spi=0x%08x", spi);
        if (vflag)
                printf(",sumlen=%d", sumlen);
-       printf(",seq=0x%x", (u_int32_t)ntohl(*(u_int32_t *)(ah + 1)));
+       printf(",seq=0x%x", EXTRACT_32BITS(ah + 1));
        if (bp + sizeof(struct ah) + sumlen > ep)
                fputs("[truncated]", stdout);
        fputs("): ", stdout);
-       
+
        return sizeof(struct ah) + sumlen;
  trunc:
        fputs("[|AH]", stdout);
-       return 65535;
+       return -1;
 }