CI: Add warning exemptions for Sun C (suncc-5.14) on Solaris 10

[tcpdump] / print-frag6.c

diff --git a/print-frag6.c b/print-frag6.c
index cc057ba77be2ece218ab11a25ba53b03dacf97b6..abc2a6367380927c6fe242c06b6f7a7df34717e2 100644 (file)
--- a/print-frag6.c
+++ b/print-frag6.c
@@ -19,78 +19,47 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-frag6.c,v 1.9 2000-09-28 06:42:59 guy Exp $";
-#endif
+/* \summary: IPv6 fragmentation header printer */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
 
-#ifdef INET6
+#include "netdissect-stdinc.h"
 
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+#include "extract.h"
 
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-
-#include <stdio.h>
-
-#include <netinet/ip6.h>
-
-#include "interface.h"
-#include "addrtoname.h"
+#include "ip6.h"
 
 int
-frag6_print(register const u_char *bp, register const u_char *bp2)
+frag6_print(netdissect_options *ndo, const u_char *bp, const u_char *bp2)
 {
-       register const struct ip6_frag *dp;
-       register const struct ip6_hdr *ip6;
-       register const u_char *ep;
-
-#if 0
-#define TCHECK(var) if ((u_char *)&(var) >= ep - sizeof(var)) goto trunc
-#endif
-
-       dp = (struct ip6_frag *)bp;
-       ip6 = (struct ip6_hdr *)bp2;
+       const struct ip6_frag *dp;
+       const struct ip6_hdr *ip6;
 
-       /* 'ep' points to the end of avaible data. */
-       ep = snapend;
+       ndo->ndo_protocol = "frag6";
+       dp = (const struct ip6_frag *)bp;
+       ip6 = (const struct ip6_hdr *)bp2;
 
-       TCHECK(dp->ip6f_offlg);
-
-       if (vflag) {
-               printf("frag (0x%08x:%d|%ld)",
-                      (u_int32_t)ntohl(dp->ip6f_ident),
-                      ntohs(dp->ip6f_offlg & IP6F_OFF_MASK),
-                      sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) -
-                              (long)(bp - bp2) - sizeof(struct ip6_frag));
-       } else {
-               printf("frag (%d|%ld)",
-                      ntohs(dp->ip6f_offlg & IP6F_OFF_MASK),
-                      sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) -
-                              (long)(bp - bp2) - sizeof(struct ip6_frag));
-       }
+       ND_PRINT("frag (");
+       if (ndo->ndo_vflag)
+               ND_PRINT("0x%08x:", GET_BE_U_4(dp->ip6f_ident));
+       else
+               ND_TCHECK_4(dp->ip6f_ident);
+       ND_PRINT("%u|", GET_BE_U_2(dp->ip6f_offlg) & IP6F_OFF_MASK);
+       if ((bp - bp2) + sizeof(struct ip6_frag) >
+           sizeof(struct ip6_hdr) + GET_BE_U_2(ip6->ip6_plen))
+               ND_PRINT("[length < 0] (invalid))");
+       else
+               ND_PRINT("%zu)",
+                        sizeof(struct ip6_hdr) + GET_BE_U_2(ip6->ip6_plen) -
+                        (bp - bp2) - sizeof(struct ip6_frag));
 
-#if 1
        /* it is meaningless to decode non-first fragment */
-       if (ntohs(dp->ip6f_offlg & IP6F_OFF_MASK) != 0)
-               return 65535;
-       else
-#endif
-       {
-               fputs(" ", stdout);
+       if ((GET_BE_U_2(dp->ip6f_offlg) & IP6F_OFF_MASK) != 0)
+               return -1;
+       else {
+               ND_PRINT(" ");
                return sizeof(struct ip6_frag);
        }
-trunc:
-       fputs("[|frag]", stdout);
-       return 65535;
-#undef TCHECK
 }
-#endif /* INET6 */