X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/38700c7f24646dfbc6ac0ed529d3ed727c545cd0..c7b0738460b08e63a1bd15c88ef1f9599cd71a08:/print-rt6.c diff --git a/print-rt6.c b/print-rt6.c index baa6945e..78a6a57b 100644 --- a/print-rt6.c +++ b/print-rt6.c @@ -19,22 +19,22 @@ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ +/* \summary: IPv6 routing header printer */ + #ifdef HAVE_CONFIG_H #include "config.h" #endif -#ifdef INET6 - -#include +#include #include -#include "ip6.h" - -#include "interface.h" +#include "netdissect.h" #include "addrtoname.h" #include "extract.h" +#include "ip6.h" + int rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2 _U_) { @@ -43,33 +43,26 @@ rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2 register const u_char *ep; int i, len; register const struct in6_addr *addr; - const struct in6_addr *last_addr = NULL; - dp = (struct ip6_rthdr *)bp; - len = dp->ip6r_len; + dp = (const struct ip6_rthdr *)bp; /* 'ep' points to the end of available data. */ ep = ndo->ndo_snapend; ND_TCHECK(dp->ip6r_segleft); + len = dp->ip6r_len; ND_PRINT((ndo, "srcrt (len=%d", dp->ip6r_len)); /*)*/ ND_PRINT((ndo, ", type=%d", dp->ip6r_type)); ND_PRINT((ndo, ", segleft=%d", dp->ip6r_segleft)); switch (dp->ip6r_type) { -#ifndef IPV6_RTHDR_TYPE_0 -#define IPV6_RTHDR_TYPE_0 0 -#endif -#ifndef IPV6_RTHDR_TYPE_2 -#define IPV6_RTHDR_TYPE_2 2 -#endif case IPV6_RTHDR_TYPE_0: case IPV6_RTHDR_TYPE_2: /* Mobile IPv6 ID-20 */ - dp0 = (struct ip6_rthdr0 *)dp; + dp0 = (const struct ip6_rthdr0 *)dp; ND_TCHECK(dp0->ip6r0_reserved); - if (dp0->ip6r0_reserved || ndo->ndo_vflag) { + if (EXTRACT_32BITS(dp0->ip6r0_reserved) || ndo->ndo_vflag) { ND_PRINT((ndo, ", rsv=0x%0x", EXTRACT_32BITS(&dp0->ip6r0_reserved))); } @@ -79,21 +72,12 @@ rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2 len >>= 1; addr = &dp0->ip6r0_addr[0]; for (i = 0; i < len; i++) { - if ((u_char *)(addr + 1) > ep) + if ((const u_char *)(addr + 1) > ep) goto trunc; ND_PRINT((ndo, ", [%d]%s", i, ip6addr_string(ndo, addr))); - last_addr = addr; addr++; } - /* - * the destination address used in the pseudo-header is that of the final - * destination : the last address of the routing header - */ - if (last_addr != NULL) { - struct ip6_hdr *ip6 = (struct ip6_hdr *)bp2; - UNALIGNED_MEMCPY(&ip6->ip6_dst, last_addr, sizeof (struct in6_addr)); - } /*(*/ ND_PRINT((ndo, ") ")); return((dp0->ip6r0_len + 1) << 3); @@ -107,4 +91,3 @@ rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2 ND_PRINT((ndo, "[|srcrt]")); return -1; } -#endif /* INET6 */