The Tcpdump Group git mirrors - tcpdump/blobdiff

* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

*/

* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

*/

-#ifndef lint

-static const char rcsid[] _U_ =

- "@(#) $Header: /tcpdump/master/tcpdump/print-ip6.c,v 1.43 2004-05-01 10:15:33 hannes Exp $";

-#endif

-

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

-#ifdef INET6

-

-#include <tcpdump-stdinc.h>

+#include <netdissect-stdinc.h>

-#include <stdio.h>

-#include <stdlib.h>

#include <string.h>

-#include "interface.h"

+#include "netdissect.h"

#include "addrtoname.h"

#include "extract.h"

#include "ip6.h"

#include "ipproto.h"

#include "addrtoname.h"

#include "extract.h"

#include "ip6.h"

#include "ipproto.h"

+/*

+ * Compute a V6-style checksum by building a pseudoheader.

+ */

+int

+nextproto6_cksum(const struct ip6_hdr *ip6, const uint8_t *data,

+ u_int len, u_int covlen, u_int next_proto)

+{

+ struct {

+ struct in6_addr ph_src;

+ struct in6_addr ph_dst;

+ uint32_t ph_len;

+ uint8_t ph_zero[3];

+ uint8_t ph_nxt;

+ } ph;

+ struct cksum_vec vec[2];

+

+ /* pseudo-header */

+ memset(&ph, 0, sizeof(ph));

+ UNALIGNED_MEMCPY(&ph.ph_src, &ip6->ip6_src, sizeof (struct in6_addr));

+ UNALIGNED_MEMCPY(&ph.ph_dst, &ip6->ip6_dst, sizeof (struct in6_addr));

+ ph.ph_len = htonl(len);

+ ph.ph_nxt = next_proto;

+

+ vec[0].ptr = (const uint8_t *)(void *)&ph;

+ vec[0].len = sizeof(ph);

+ vec[1].ptr = data;

+ vec[1].len = covlen;

+

+ return in_cksum(vec, 2);

+}

+

/*

* print an IP6 datagram.

*/

void

/*

* print an IP6 datagram.

*/

void

-ip6_print(register const u_char *bp, register u_int length)

+ip6_print(netdissect_options *ndo, const u_char *bp, u_int length)

{

register const struct ip6_hdr *ip6;

register int advance;

{

register const struct ip6_hdr *ip6;

register int advance;

ip6 = (const struct ip6_hdr *)bp;

- TCHECK(*ip6);

+ ND_TCHECK(*ip6);

if (length < sizeof (struct ip6_hdr)) {

- (void)printf("truncated-ip6 %d", length);

+ ND_PRINT((ndo, "truncated-ip6 %u", length));

return;

}

return;

}

- if (!eflag)

- printf("IP6 ");

+ if (!ndo->ndo_eflag)

+ ND_PRINT((ndo, "IP6 "));

+

+ if (IP6_VERSION(ip6) != 6) {

+ ND_PRINT((ndo,"version error: %u != 6", IP6_VERSION(ip6)));

+ return;

+ }

payload_len = EXTRACT_16BITS(&ip6->ip6_plen);

len = payload_len + sizeof(struct ip6_hdr);

if (length < len)

payload_len = EXTRACT_16BITS(&ip6->ip6_plen);

len = payload_len + sizeof(struct ip6_hdr);

if (length < len)

- (void)printf("truncated-ip6 - %d bytes missing!",

- len - length);

+ ND_PRINT((ndo, "truncated-ip6 - %u bytes missing!",

+ len - length));

- if (vflag) {

+ if (ndo->ndo_vflag) {

flow = EXTRACT_32BITS(&ip6->ip6_flow);

- printf("(");

+ ND_PRINT((ndo, "("));

#if 0

/* rfc1883 */

if (flow & 0x0f000000)

#if 0

/* rfc1883 */

if (flow & 0x0f000000)

- (void)printf("pri 0x%02x, ", (flow & 0x0f000000) >> 24);

+ ND_PRINT((ndo, "pri 0x%02x, ", (flow & 0x0f000000) >> 24));

if (flow & 0x00ffffff)

- (void)printf("flowlabel 0x%06x, ", flow & 0x00ffffff);

+ ND_PRINT((ndo, "flowlabel 0x%06x, ", flow & 0x00ffffff));

#else

/* RFC 2460 */

if (flow & 0x0ff00000)

#else

/* RFC 2460 */

if (flow & 0x0ff00000)

- (void)printf("class 0x%02x, ", (flow & 0x0ff00000) >> 20);

+ ND_PRINT((ndo, "class 0x%02x, ", (flow & 0x0ff00000) >> 20));

if (flow & 0x000fffff)

- (void)printf("flowlabel 0x%05x, ", flow & 0x000fffff);

+ ND_PRINT((ndo, "flowlabel 0x%05x, ", flow & 0x000fffff));

#endif

- (void)printf("hlim %u, next-header: %s (%u), payload-len %u) ",

+ ND_PRINT((ndo, "hlim %u, next-header %s (%u) payload length: %u) ",

ip6->ip6_hlim,

tok2str(ipproto_values,"unknown",ip6->ip6_nxt),

ip6->ip6_nxt,

ip6->ip6_hlim,

tok2str(ipproto_values,"unknown",ip6->ip6_nxt),

ip6->ip6_nxt,

- payload_len);

+ payload_len));

}

/*

* Cut off the snapshot length to the end of the IP payload.

*/

ipend = bp + len;

}

/*

* Cut off the snapshot length to the end of the IP payload.

*/

ipend = bp + len;

- if (ipend < snapend)

- snapend = ipend;

+ if (ipend < ndo->ndo_snapend)

+ ndo->ndo_snapend = ipend;

cp = (const u_char *)ip6;

advance = sizeof(struct ip6_hdr);

nh = ip6->ip6_nxt;

cp = (const u_char *)ip6;

advance = sizeof(struct ip6_hdr);

nh = ip6->ip6_nxt;

- while (cp < snapend && advance > 0) {

+ while (cp < ndo->ndo_snapend && advance > 0) {

cp += advance;

len -= advance;

if (cp == (const u_char *)(ip6 + 1) &&

nh != IPPROTO_TCP && nh != IPPROTO_UDP &&

cp += advance;

len -= advance;

if (cp == (const u_char *)(ip6 + 1) &&

nh != IPPROTO_TCP && nh != IPPROTO_UDP &&

- nh != IPPROTO_SCTP) {

- (void)printf("%s > %s: ", ip6addr_string(&ip6->ip6_src),

- ip6addr_string(&ip6->ip6_dst));

+ nh != IPPROTO_DCCP && nh != IPPROTO_SCTP) {

+ ND_PRINT((ndo, "%s > %s: ", ip6addr_string(ndo, &ip6->ip6_src),

+ ip6addr_string(ndo, &ip6->ip6_dst)));

}

switch (nh) {

case IPPROTO_HOPOPTS:

}

switch (nh) {

case IPPROTO_HOPOPTS:

- advance = hbhopt_print(cp);

+ advance = hbhopt_print(ndo, cp);

nh = *cp;

break;

case IPPROTO_DSTOPTS:

nh = *cp;

break;

case IPPROTO_DSTOPTS:

- advance = dstopt_print(cp);

+ advance = dstopt_print(ndo, cp);

nh = *cp;

break;

case IPPROTO_FRAGMENT:

nh = *cp;

break;

case IPPROTO_FRAGMENT:

- advance = frag6_print(cp, (const u_char *)ip6);

- if (snapend <= cp + advance)

+ advance = frag6_print(ndo, cp, (const u_char *)ip6);

+ if (ndo->ndo_snapend <= cp + advance)

return;

nh = *cp;

fragmented = 1;

return;

nh = *cp;

fragmented = 1;

* which payload can be piggybacked atop a

* mobility header.

*/

* which payload can be piggybacked atop a

* mobility header.

*/

- advance = mobility_print(cp, (const u_char *)ip6);

+ advance = mobility_print(ndo, cp, (const u_char *)ip6);

nh = *cp;

return;

case IPPROTO_ROUTING:

nh = *cp;

return;

case IPPROTO_ROUTING:

- advance = rt6_print(cp, (const u_char *)ip6);

+ advance = rt6_print(ndo, cp, (const u_char *)ip6);

nh = *cp;

break;

case IPPROTO_SCTP:

nh = *cp;

break;

case IPPROTO_SCTP:

- sctp_print(cp, (const u_char *)ip6, len);

+ sctp_print(ndo, cp, (const u_char *)ip6, len);

+ return;

+ case IPPROTO_DCCP:

+ dccp_print(ndo, cp, (const u_char *)ip6, len);

return;

case IPPROTO_TCP:

return;

case IPPROTO_TCP:

- tcp_print(cp, len, (const u_char *)ip6, fragmented);

+ tcp_print(ndo, cp, len, (const u_char *)ip6, fragmented);

return;

case IPPROTO_UDP:

return;

case IPPROTO_UDP:

- udp_print(cp, len, (const u_char *)ip6, fragmented);

+ udp_print(ndo, cp, len, (const u_char *)ip6, fragmented);

return;

case IPPROTO_ICMPV6:

return;

case IPPROTO_ICMPV6:

- icmp6_print(cp, len, (const u_char *)ip6, fragmented);

+ icmp6_print(ndo, cp, len, (const u_char *)ip6, fragmented);

return;

case IPPROTO_AH:

return;

case IPPROTO_AH:

- advance = ah_print(cp);

+ advance = ah_print(ndo, cp);

nh = *cp;

break;

case IPPROTO_ESP:

{

int enh, padlen;

nh = *cp;

break;

case IPPROTO_ESP:

{

int enh, padlen;

- advance = esp_print(gndo, cp, (const u_char *)ip6, &enh, &padlen);

+ advance = esp_print(ndo, cp, len, (const u_char *)ip6, &enh, &padlen);

nh = enh & 0xff;

len -= padlen;

break;

nh = enh & 0xff;

len -= padlen;

break;

case IPPROTO_IPCOMP:

{

int enh;

case IPPROTO_IPCOMP:

{

int enh;

- advance = ipcomp_print(cp, &enh);

+ advance = ipcomp_print(ndo, cp, &enh);

nh = enh & 0xff;

break;

}

case IPPROTO_PIM:

nh = enh & 0xff;

break;

}

case IPPROTO_PIM:

- pim_print(cp, len);

+ pim_print(ndo, cp, len, (const u_char *)ip6);

return;

+

case IPPROTO_OSPF:

- ospf6_print(cp, len);

+ ospf6_print(ndo, cp, len);

return;

case IPPROTO_IPV6:

return;

case IPPROTO_IPV6:

- ip6_print(cp, len);

+ ip6_print(ndo, cp, len);

return;

case IPPROTO_IPV4:

return;

case IPPROTO_IPV4:

- ip_print(cp, len);

+ ip_print(ndo, cp, len);

+ return;

+

+ case IPPROTO_PGM:

+ pgm_print(ndo, cp, len, (const u_char *)ip6);

+ return;

+

+ case IPPROTO_GRE:

+ gre_print(ndo, cp, len);

+ return;

+

+ case IPPROTO_RSVP:

+ rsvp_print(ndo, cp, len);

return;

case IPPROTO_NONE:

return;

case IPPROTO_NONE:

- (void)printf("no next header");

+ ND_PRINT((ndo, "no next header"));

return;

default:

return;

default:

- (void)printf("ip-proto-%d %d", ip6->ip6_nxt, len);

+ ND_PRINT((ndo, "ip-proto-%d %d", nh, len));

return;

}

return;

trunc:

return;

}

return;

trunc:

- (void)printf("[|ip6]");

+ ND_PRINT((ndo, "[|ip6]"));

}

-

-#endif /* INET6 */