#endif
#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-mobility.c,v 1.2 2002-07-08 08:58:37 fenner Exp $";
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-mobility.c,v 1.9.2.2 2003-11-16 08:51:33 guy Exp $";
#endif
#ifdef INET6
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
+#include <tcpdump-stdinc.h>
-#include <netinet/in.h>
#include <stdio.h>
#include "ip6.h"
/* Mobility header */
struct ip6_mobility {
- u_int8_t ip6m_pproto; /* following payload protocol (for PG) */
- u_int8_t ip6m_len; /* length in units of 8 octets */
- u_int16_t ip6m_type; /* message type */
- u_int16_t ip6m_cksum; /* sum of IPv6 pseudo-header and MH */
+ u_int8_t ip6m_pproto; /* following payload protocol (for PG) */
+ u_int8_t ip6m_len; /* length in units of 8 octets */
+ u_int8_t ip6m_type; /* message type */
+ u_int8_t reserved; /* reserved */
+ u_int16_t ip6m_cksum; /* sum of IPv6 pseudo-header and MH */
union {
u_int16_t ip6m_un_data16[1]; /* type-specific field */
u_int8_t ip6m_un_data8[2]; /* type-specific fiedl */
#define IP6M_MINLEN 8
/* message type */
-#define IP6M_BINDING_REQUEST 0x0000 /* Binding Refresh Request */
-#define IP6M_HOME_TEST_INIT 0x0001 /* Home Test Init */
-#define IP6M_CAREOF_TEST_INIT 0x0002 /* Care-of Test Init */
-#define IP6M_HOME_TEST 0x0003 /* Home Test */
-#define IP6M_CAREOF_TEST 0x0004 /* Care-of Test */
-#define IP6M_BINDING_UPDATE 0x0005 /* Binding Update */
-#define IP6M_BINDING_ACK 0x0006 /* Binding Acknowledgement */
-#define IP6M_BINDING_ERROR 0x0007 /* Binding Error */
+#define IP6M_BINDING_REQUEST 0 /* Binding Refresh Request */
+#define IP6M_HOME_TEST_INIT 1 /* Home Test Init */
+#define IP6M_CAREOF_TEST_INIT 2 /* Care-of Test Init */
+#define IP6M_HOME_TEST 3 /* Home Test */
+#define IP6M_CAREOF_TEST 4 /* Care-of Test */
+#define IP6M_BINDING_UPDATE 5 /* Binding Update */
+#define IP6M_BINDING_ACK 6 /* Binding Acknowledgement */
+#define IP6M_BINDING_ERROR 7 /* Binding Error */
/* Mobility Header Options */
#define IP6MOPT_MINLEN 2
-#define IP6MOPT_PAD1 0x0
-#define IP6MOPT_PADN 0x1
-#define IP6MOPT_UI 0x2
-#define IP6MOPT_UI_MINLEN 4
-#define IP6MOPT_ALTCOA 0x3
+#define IP6MOPT_PAD1 0x0 /* Pad1 */
+#define IP6MOPT_PADN 0x1 /* PadN */
+#define IP6MOPT_REFRESH 0x2 /* Binding Refresh Advice */
+#define IP6MOPT_REFRESH_MINLEN 4
+#define IP6MOPT_ALTCOA 0x3 /* Alternate Care-of Address */
#define IP6MOPT_ALTCOA_MINLEN 18
-#define IP6MOPT_NONCEID 0x4
+#define IP6MOPT_NONCEID 0x4 /* Nonce Indices */
#define IP6MOPT_NONCEID_MINLEN 6
-#define IP6MOPT_AUTH 0x5
-#define IP6MOPT_AUTH_MINLEN 2 /* 2+len */
+#define IP6MOPT_AUTH 0x5 /* Binding Authorization Data */
+#define IP6MOPT_AUTH_MINLEN 12
-void
+static void
mobility_opt_print(const u_char *bp, int len)
{
int i;
optlen = 1;
else {
if (i + 1 < len)
- optlen = bp[i + 1];
+ optlen = bp[i + 1] + 2;
else
goto trunc;
- if (optlen < IP6MOPT_MINLEN)
- optlen = IP6MOPT_MINLEN; /* XXX */
}
if (i + optlen > len)
goto trunc;
}
printf("(padn)");
break;
- case IP6MOPT_UI:
- if (len - i < IP6MOPT_UI_MINLEN) {
- printf("(ui: trunc)");
+ case IP6MOPT_REFRESH:
+ if (len - i < IP6MOPT_REFRESH_MINLEN) {
+ printf("(refresh: trunc)");
goto trunc;
}
- printf("(ui: 0x%04x)", EXTRACT_16BITS(&bp[i+2]));
+ /* units of 4 secs */
+ printf("(refresh: %d)",
+ EXTRACT_16BITS(&bp[i+2]) << 2);
break;
case IP6MOPT_ALTCOA:
if (len - i < IP6MOPT_ALTCOA_MINLEN) {
printf("(ni: trunc)");
goto trunc;
}
- printf("(ni: ho=0x%04x ci=0x%04x)",
+ printf("(ni: ho=0x%04x co=0x%04x)",
EXTRACT_16BITS(&bp[i+2]),
EXTRACT_16BITS(&bp[i+4]));
break;
printf("(auth: trunc)");
goto trunc;
}
- printf("(auth spi: 0x%08x)",
- EXTRACT_32BITS(&bp[i+2]));
+ printf("(auth)");
break;
default:
if (len - i < IP6MOPT_MINLEN) {
/* 'ep' points to the end of available data. */
ep = snapend;
- TCHECK(mh->ip6m_len);
- mhlen = (int)(mh->ip6m_len << 3);
- if (mhlen < IP6M_MINLEN)
- mhlen = IP6M_MINLEN; /* XXX */
+ if (!TTEST(mh->ip6m_len)) {
+ /*
+ * There's not enough captured data to include the
+ * mobility header length.
+ *
+ * Our caller expects us to return the length, however,
+ * so return a value that will run to the end of the
+ * captured data.
+ *
+ * XXX - "ip6_print()" doesn't do anything with the
+ * returned length, however, as it breaks out of the
+ * header-processing loop.
+ */
+ mhlen = ep - bp;
+ goto trunc;
+ }
+ mhlen = (int)((mh->ip6m_len + 1) << 3);
/* XXX ip6m_cksum */
TCHECK(mh->ip6m_type);
- type = ntohs(mh->ip6m_type);
+ type = mh->ip6m_type;
switch (type) {
case IP6M_BINDING_REQUEST:
printf("mobility: BRR");
printf("mobility: %soTI",
type == IP6M_HOME_TEST_INIT ? "H" : "C");
hlen = IP6M_MINLEN;
- TCHECK2(*mh, hlen + 4);
- printf(" cookie=0x%x", EXTRACT_32BITS(&bp[hlen]));
- hlen += 4;
+ if (vflag) {
+ TCHECK2(*mh, hlen + 8);
+ printf(" %s Init Cookie=%08x:%08x",
+ type == IP6M_HOME_TEST_INIT ? "Home" : "Care-of",
+ EXTRACT_32BITS(&bp[hlen]),
+ EXTRACT_32BITS(&bp[hlen + 4]));
+ }
+ hlen += 8;
break;
case IP6M_HOME_TEST:
case IP6M_CAREOF_TEST:
printf("mobility: %soT",
type == IP6M_HOME_TEST ? "H" : "C");
+ TCHECK(mh->ip6m_data16[0]);
+ printf(" nonce id=0x%x", EXTRACT_16BITS(&mh->ip6m_data16[0]));
hlen = IP6M_MINLEN;
- TCHECK2(*mh, hlen + 2);
- printf(" nonce id=0x%x", EXTRACT_16BITS(&bp[hlen]));
- hlen += 2;
- /* Reserved (16bits) */
- hlen += 2;
- TCHECK2(*mh, hlen + 4);
- printf(" mobile cookie=0x%x", EXTRACT_32BITS(&bp[hlen]));
- hlen += 4;
- /* Home(Care-of) Cookie (128 bits) */
- hlen += 16;
+ if (vflag) {
+ TCHECK2(*mh, hlen + 8);
+ printf(" %s Init Cookie=%08x:%08x",
+ type == IP6M_HOME_TEST ? "Home" : "Care-of",
+ EXTRACT_32BITS(&bp[hlen]),
+ EXTRACT_32BITS(&bp[hlen + 4]));
+ }
+ hlen += 8;
+ if (vflag) {
+ TCHECK2(*mh, hlen + 8);
+ printf(" %s Keygen Token=%08x:%08x",
+ type == IP6M_HOME_TEST ? "Home" : "Care-of",
+ EXTRACT_32BITS(&bp[hlen]),
+ EXTRACT_32BITS(&bp[hlen + 4]));
+ }
+ hlen += 8;
break;
case IP6M_BINDING_UPDATE:
printf("mobility: BU");
- TCHECK(mh->ip6m_data8[0]);
- if (mh->ip6m_data8[0] & 0xf0)
+ TCHECK(mh->ip6m_data16[0]);
+ printf(" seq#=%d", EXTRACT_16BITS(&mh->ip6m_data16[0]));
+ hlen = IP6M_MINLEN;
+ TCHECK2(*mh, hlen + 1);
+ if (bp[hlen] & 0xf0)
printf(" ");
- if (mh->ip6m_data8[0] & 0x80)
+ if (bp[hlen] & 0x80)
printf("A");
- if (mh->ip6m_data8[0] & 0x40)
+ if (bp[hlen] & 0x40)
printf("H");
- if (mh->ip6m_data8[0] & 0x20)
- printf("S");
- if (mh->ip6m_data8[0] & 0x10)
- printf("D");
- hlen = IP6M_MINLEN;
+ if (bp[hlen] & 0x20)
+ printf("L");
+ if (bp[hlen] & 0x10)
+ printf("K");
+ /* Reserved (4bits) */
+ hlen += 1;
+ /* Reserved (8bits) */
+ hlen += 1;
TCHECK2(*mh, hlen + 2);
- printf(" seq#=%d", EXTRACT_16BITS(&bp[hlen]));
- hlen += 2;
- /* Reserved (16bits) */
+ /* units of 4 secs */
+ printf(" lifetime=%d", EXTRACT_16BITS(&bp[hlen]) << 2);
hlen += 2;
- TCHECK2(*mh, hlen + 4);
- printf(" lifetime=%d", EXTRACT_32BITS(&bp[hlen]));
- hlen += 4;
- TCHECK2(*mh, hlen + 16);
- printf(" homeaddr %s", ip6addr_string(&bp[hlen]));
- hlen += 16;
break;
case IP6M_BINDING_ACK:
printf("mobility: BA");
TCHECK(mh->ip6m_data8[0]);
printf(" status=%d", mh->ip6m_data8[0]);
+ if (mh->ip6m_data8[1] & 0x80)
+ printf(" K");
+ /* Reserved (7bits) */
hlen = IP6M_MINLEN;
TCHECK2(*mh, hlen + 2);
printf(" seq#=%d", EXTRACT_16BITS(&bp[hlen]));
hlen += 2;
- /* Reserved (16bits) */
+ TCHECK2(*mh, hlen + 2);
+ /* units of 4 secs */
+ printf(" lifetime=%d", EXTRACT_16BITS(&bp[hlen]) << 2);
hlen += 2;
- TCHECK2(*mh, hlen + 4);
- printf(" lifetime=%d", EXTRACT_32BITS(&bp[hlen]));
- hlen += 4;
- TCHECK2(*mh, hlen + 4);
- printf(" refresh=%d", ntohl(*(u_int32_t *)&bp[hlen]));
- hlen += 4;
break;
case IP6M_BINDING_ERROR:
printf("mobility: BE");
TCHECK(mh->ip6m_data8[0]);
printf(" status=%d", mh->ip6m_data8[0]);
+ /* Reserved */
hlen = IP6M_MINLEN;
TCHECK2(*mh, hlen + 16);
printf(" homeaddr %s", ip6addr_string(&bp[hlen]));
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