* RFC3315: DHCPv6
* supported DHCPv6 options:
* RFC3319,
- * draft-ietf-dhc-dhcpv6-opt-dnsconfig-04.txt,
- * draft-ietf-dhc-dhcpv6-opt-prefix-delegation-05.txt
- * draft-ietf-dhc-dhcpv6-opt-timeconfig-02.txt,
+ * RFC3633,
+ * RFC3646,
+ * draft-ietf-dhc-dhcpv6-opt-timeconfig-03.txt,
+ * draft-ietf-dhc-lifetime-00.txt,
*/
#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-dhcp6.c,v 1.27 2003-10-29 03:54:14 itojun Exp $";
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-dhcp6.c,v 1.35 2004-07-06 22:16:03 guy Exp $";
#endif
#ifdef HAVE_CONFIG_H
#define DH6OPT_IADDR 5
#define DH6OPT_ORO 6
#define DH6OPT_PREFERENCE 7
-# define DH6OPT_PREF_UNDEF -1
# define DH6OPT_PREF_MAX 255
#define DH6OPT_ELAPSED_TIME 8
#define DH6OPT_RELAY_MSG 9
/*#define DH6OPT_SERVER_MSG 10 deprecated */
#define DH6OPT_AUTH 11
+# define DH6OPT_AUTHPROTO_DELAYED 2
+# define DH6OPT_AUTHPROTO_RECONFIG 3
+# define DH6OPT_AUTHALG_HMACMD5 1
+# define DH6OPT_AUTHRDM_MONOCOUNTER 0
+# define DH6OPT_AUTHRECONFIG_KEY 1
+# define DH6OPT_AUTHRECONFIG_HMACMD5 2
#define DH6OPT_UNICAST 12
#define DH6OPT_STATUS_CODE 13
# define DH6OPT_STCODE_SUCCESS 0
#define DH6OPT_SIP_SERVER_A 22
#define DH6OPT_DNS 23
#define DH6OPT_DNSNAME 24
+#define DH6OPT_IA_PD 25
+#define DH6OPT_IA_PD_PREFIX 26
/*
- * The option type has not been assigned for the following options.
- * We temporarily adopt values used in the service specification document
+ * The old prefix delegation option used in the service specification document
* (200206xx version) by NTT Communications.
- * Note that we'll change the following definitions if different type values
- * are officially assigned.
*/
#define DH6OPT_PREFIX_DELEGATION 30
#define DH6OPT_PREFIX_INFORMATION 31
#define DH6OPT_PREFIX_REQUEST 32
/*
- * The followings are also unassigned numbers.
- * We temporarily use values as of KAME snap 20031013.
+ * The following one is an unassigned number.
+ * We temporarily use values as of KAME snap 20040322.
*/
-#define DH6OPT_IA_PD 33
-#define DH6OPT_IA_PD_PREFIX 34
#define DH6OPT_NTP_SERVERS 35
+#define DH6OPT_LIFETIME 36
struct dhcp6opt {
u_int16_t dh6opt_type;
struct in6_addr dh6opt_ia_prefix_addr;
} __attribute__ ((__packed__));
+struct dhcp6_auth {
+ u_int16_t dh6opt_auth_type;
+ u_int16_t dh6opt_auth_len;
+ u_int8_t dh6opt_auth_proto;
+ u_int8_t dh6opt_auth_alg;
+ u_int8_t dh6opt_auth_rdm;
+ u_int8_t dh6opt_auth_rdinfo[8];
+ /* authentication information follows */
+} __attribute__ ((__packed__));
+
static const char *
dhcp6opt_name(int type)
{
return "elapsed time";
case DH6OPT_RELAY_MSG:
return "relay message";
+ case DH6OPT_AUTH:
+ return "authentication";
+ case DH6OPT_UNICAST:
+ return "server unicast";
case DH6OPT_STATUS_CODE:
return "status code";
case DH6OPT_RAPID_COMMIT:
return "rapid commit";
+ case DH6OPT_USER_CLASS:
+ return "user class";
+ case DH6OPT_VENDOR_CLASS:
+ return "vendor class";
+ case DH6OPT_VENDOR_OPTS:
+ return "vendor-specific info";
case DH6OPT_INTERFACE_ID:
return "interface ID";
case DH6OPT_RECONF_MSG:
case DH6OPT_RECONF_ACCEPT:
return "reconfigure accept";
case DH6OPT_SIP_SERVER_D:
- return "SIP Servers Domain";
+ return "SIP servers domain";
case DH6OPT_SIP_SERVER_A:
- return "SIP Servers Address";
+ return "SIP servers address";
case DH6OPT_DNS:
return "DNS";
+ case DH6OPT_DNSNAME:
+ return "DNS name";
case DH6OPT_PREFIX_DELEGATION:
return "prefix delegation";
case DH6OPT_PREFIX_INFORMATION:
return "IA_PD prefix";
case DH6OPT_NTP_SERVERS:
return "NTP Server";
+ case DH6OPT_LIFETIME:
+ return "lifetime";
default:
snprintf(genstr, sizeof(genstr), "opt_%d", type);
return(genstr);
struct in6_addr addr6;
struct dhcp6_ia ia;
struct dhcp6_ia_prefix ia_prefix;
+ struct dhcp6_auth authopt;
+ u_int authinfolen, authrealmlen;
if (cp == ep)
return;
break;
case DH6OPT_RELAY_MSG:
printf(" (");
- dhcp6_print((const u_char *)(dh6o + 1), optlen, 0, 0);
+ dhcp6_print((const u_char *)(dh6o + 1), optlen);
+ printf(")");
+ break;
+ case DH6OPT_AUTH:
+ if (optlen < sizeof(authopt) - sizeof(*dh6o)) {
+ printf(" ?)");
+ break;
+ }
+ memcpy(&authopt, dh6o, sizeof(authopt));
+ switch (authopt.dh6opt_auth_proto) {
+ case DH6OPT_AUTHPROTO_DELAYED:
+ printf(" proto: delayed");
+ break;
+ case DH6OPT_AUTHPROTO_RECONFIG:
+ printf(" proto: reconfigure");
+ break;
+ default:
+ printf(" proto: %d",
+ authopt.dh6opt_auth_proto);
+ break;
+ }
+ switch (authopt.dh6opt_auth_alg) {
+ case DH6OPT_AUTHALG_HMACMD5:
+ /* XXX: may depend on the protocol */
+ printf(", alg: HMAC-MD5");
+ break;
+ default:
+ printf(", alg: %d", authopt.dh6opt_auth_alg);
+ break;
+ }
+ switch (authopt.dh6opt_auth_rdm) {
+ case DH6OPT_AUTHRDM_MONOCOUNTER:
+ printf(", RDM: mono");
+ break;
+ default:
+ printf(", RDM: %d", authopt.dh6opt_auth_rdm);
+ break;
+ }
+ tp = (u_char *)&authopt.dh6opt_auth_rdinfo;
+ printf(", RD:");
+ for (i = 0; i < 4; i++, tp += sizeof(val16))
+ printf(" %04x", EXTRACT_16BITS(tp));
+
+ /* protocol dependent part */
+ tp = (u_char *)dh6o + sizeof(authopt);
+ authinfolen =
+ optlen + sizeof(*dh6o) - sizeof(authopt);
+ switch (authopt.dh6opt_auth_proto) {
+ case DH6OPT_AUTHPROTO_DELAYED:
+ if (authinfolen == 0)
+ break;
+ if (authinfolen < 20) {
+ printf(" ??");
+ break;
+ }
+ authrealmlen = authinfolen - 20;
+ if (authrealmlen > 0) {
+ printf(", realm: ");
+ }
+ for (i = 0; i < authrealmlen; i++, tp++)
+ printf("%02x", *tp);
+ printf(", key ID: %08x", EXTRACT_32BITS(tp));
+ tp += 4;
+ printf(", HMAC-MD5:");
+ for (i = 0; i < 4; i++, tp+= 4)
+ printf(" %08x", EXTRACT_32BITS(tp));
+ break;
+ case DH6OPT_AUTHPROTO_RECONFIG:
+ if (authinfolen != 17) {
+ printf(" ??");
+ break;
+ }
+ switch (*tp++) {
+ case DH6OPT_AUTHRECONFIG_KEY:
+ printf(" reconfig-key");
+ break;
+ case DH6OPT_AUTHRECONFIG_HMACMD5:
+ printf(" type: HMAC-MD5");
+ break;
+ default:
+ printf(" type: ??");
+ break;
+ }
+ printf(" value:");
+ for (i = 0; i < 4; i++, tp+= 4)
+ printf(" %08x", EXTRACT_32BITS(tp));
+ break;
+ default:
+ printf(" ??");
+ break;
+ }
+
printf(")");
break;
case DH6OPT_RAPID_COMMIT: /* nothing todo */
printf(" for inf-req)");
break;
default:
- printf(" for ???(%02x))", *tp);
+ printf(" for ?\?\?(%02x))", *tp);
break;
}
break;
}
printf(")");
break;
+ case DH6OPT_LIFETIME:
+ if (optlen != 4) {
+ printf(" ?)");
+ break;
+ }
+ memcpy(&val32, dh6o + 1, sizeof(val32));
+ val32 = ntohl(val32);
+ printf(" %d)", (int)val32);
+ break;
default:
printf(")");
break;
* Print dhcp6 packets
*/
void
-dhcp6_print(const u_char *cp, u_int length,
- u_int16_t sport, u_int16_t dport)
+dhcp6_print(const u_char *cp, u_int length)
{
struct dhcp6 *dh6;
struct dhcp6_relay *dh6relay;
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