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

[tcpdump] / print-ah.c

diff --git a/print-ah.c b/print-ah.c
index 360fc5e5421e42f0418df12b2db3cf60503d2488..3b3a792133c238ad98993308c369b77c44c8701f 100644 (file)
--- a/print-ah.c
+++ b/print-ah.c
@@ -21,43 +21,53 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: IPSEC Authentication Header printer */
 
-#include <tcpdump-stdinc.h>
+#include <config.h>
 
-#include "ah.h"
+#include "netdissect-stdinc.h"
 
 #include "netdissect.h"
 #include "extract.h"
 
+#include "ah.h"
+
 int
-ah_print(netdissect_options *ndo, register const u_char *bp)
+ah_print(netdissect_options *ndo, const u_char *bp)
 {
-       register const struct ah *ah;
-       register const u_char *ep;
-       int sumlen;
-       u_int32_t spi;
+       const struct ah *ah;
+       uint8_t ah_len;
+       u_int ah_hdr_len;
+       uint16_t reserved;
+       const u_char *p;
 
+       ndo->ndo_protocol = "ah";
        ah = (const struct ah *)bp;
-       ep = ndo->ndo_snapend;          /* 'ep' points to the end of available data. */
 
-       ND_TCHECK(*ah);
-
-       sumlen = ah->ah_len << 2;
-       spi = EXTRACT_32BITS(&ah->ah_spi);
+       nd_print_protocol_caps(ndo);
+/*
+ * RFC4302
+ *
+ * 2.2.  Payload Length
+ *
+ *    This 8-bit field specifies the length of AH in 32-bit words (4-byte
+ *    units), minus "2".
+ */
+       ah_len = GET_U_1(ah->ah_len);
+       ah_hdr_len = (ah_len + 2) * 4;
 
-       ND_PRINT((ndo, "AH(spi=0x%08x", spi));
+       ND_PRINT("(");
        if (ndo->ndo_vflag)
-               ND_PRINT((ndo, ",sumlen=%d", sumlen));
-       ND_PRINT((ndo, ",seq=0x%x", EXTRACT_32BITS(ah + 1)));
-       if (bp + sizeof(struct ah) + sumlen > ep)
-               ND_PRINT((ndo, "[truncated]"));
-       ND_PRINT((ndo, "): "));
-
-       return sizeof(struct ah) + sumlen;
- trunc:
-       ND_PRINT((ndo, "[|AH]"));
-       return -1;
+               ND_PRINT("length=%u(%u-bytes),", ah_len, ah_hdr_len);
+       reserved = GET_BE_U_2(ah->ah_reserved);
+       if (reserved)
+               ND_PRINT("reserved=0x%x[MustBeZero],", reserved);
+       ND_PRINT("spi=0x%08x,", GET_BE_U_4(ah->ah_spi));
+       ND_PRINT("seq=0x%x,", GET_BE_U_4(ah->ah_seq));
+       ND_PRINT("icv=0x");
+       for (p = (const u_char *)(ah + 1); p < bp + ah_hdr_len; p++)
+               ND_PRINT("%02x", GET_U_1(p));
+       ND_PRINT("): ");
+
+       return ah_hdr_len;
 }