* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
+
+/* \summary: IPv6 DHCP printer */
+
/*
* 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,
+ * supported DHCPv6 options:
+ * RFC3319: Session Initiation Protocol (SIP) Servers options,
+ * RFC3633: IPv6 Prefix options,
+ * RFC3646: DNS Configuration options,
+ * RFC3898: Network Information Service (NIS) Configuration options,
+ * RFC4075: Simple Network Time Protocol (SNTP) Configuration option,
+ * RFC4242: Information Refresh Time option,
+ * RFC4280: Broadcast and Multicast Control Servers options,
+ * RFC5908: Network Time Protocol (NTP) Server Option for DHCPv6
+ * RFC6334: Dual-Stack Lite option,
*/
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
#include <stdio.h>
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-dhcp6.c,v 1.28 2003-11-15 00:39:19 guy Exp $";
-#endif
/* lease duration */
-#define DHCP6_DURATITION_INFINITE 0xffffffff
+#define DHCP6_DURATION_INFINITE 0xffffffff
/* Error Values */
#define DH6ERR_FAILURE 16
#define DH6_INFORM_REQ 11
#define DH6_RELAY_FORW 12
#define DH6_RELAY_REPLY 13
+#define DH6_LEASEQUERY 14
+#define DH6_LQ_REPLY 15
+
+static const struct tok dh6_msgtype_str[] = {
+ { DH6_SOLICIT, "solicit" },
+ { DH6_ADVERTISE, "advertise" },
+ { DH6_REQUEST, "request" },
+ { DH6_CONFIRM, "confirm" },
+ { DH6_RENEW, "renew" },
+ { DH6_REBIND, "rebind" },
+ { DH6_REPLY, "reply" },
+ { DH6_RELEASE, "release" },
+ { DH6_DECLINE, "decline" },
+ { DH6_RECONFIGURE, "reconfigure" },
+ { DH6_INFORM_REQ, "inf-req" },
+ { DH6_RELAY_FORW, "relay-fwd" },
+ { DH6_RELAY_REPLY, "relay-reply" },
+ { DH6_LEASEQUERY, "leasequery" },
+ { DH6_LQ_REPLY, "leasequery-reply" },
+ { 0, NULL }
+};
/* DHCP6 base packet format */
struct dhcp6 {
union {
- u_int8_t m;
- u_int32_t x;
+ nd_uint8_t m;
+ nd_uint32_t x;
} dh6_msgtypexid;
/* options follow */
};
/* DHCPv6 relay messages */
struct dhcp6_relay {
- u_int8_t dh6relay_msgtype;
- u_int8_t dh6relay_hcnt;
- u_int8_t dh6relay_linkaddr[16]; /* XXX: badly aligned */
- u_int8_t dh6relay_peeraddr[16];
+ nd_uint8_t dh6relay_msgtype;
+ nd_uint8_t dh6relay_hcnt;
+ nd_uint8_t dh6relay_linkaddr[16]; /* XXX: badly aligned */
+ nd_uint8_t dh6relay_peeraddr[16];
/* options follow */
};
#define DH6OPT_CLIENTID 1
#define DH6OPT_SERVERID 2
#define DH6OPT_IA_NA 3
-#define DH6OPT_IA_TMP 4
-#define DH6OPT_IADDR 5
+#define DH6OPT_IA_TA 4
+#define DH6OPT_IA_ADDR 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_STCODE_NOTONLINK 4
# define DH6OPT_STCODE_USEMULTICAST 5
# define DH6OPT_STCODE_NOPREFIXAVAIL 6
+# define DH6OPT_STCODE_UNKNOWNQUERYTYPE 7
+# define DH6OPT_STCODE_MALFORMEDQUERY 8
+# define DH6OPT_STCODE_NOTCONFIGURED 9
+# define DH6OPT_STCODE_NOTALLOWED 10
#define DH6OPT_RAPID_COMMIT 14
#define DH6OPT_USER_CLASS 15
#define DH6OPT_VENDOR_CLASS 16
#define DH6OPT_RECONF_ACCEPT 20
#define DH6OPT_SIP_SERVER_D 21
#define DH6OPT_SIP_SERVER_A 22
-#define DH6OPT_DNS 23
-#define DH6OPT_DNSNAME 24
-
-/*
- * The option type has not been assigned for the following options.
- * We temporarily adopt values 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
+#define DH6OPT_DNS_SERVERS 23
+#define DH6OPT_DOMAIN_LIST 24
+#define DH6OPT_IA_PD 25
+#define DH6OPT_IA_PD_PREFIX 26
+#define DH6OPT_NIS_SERVERS 27
+#define DH6OPT_NISP_SERVERS 28
+#define DH6OPT_NIS_NAME 29
+#define DH6OPT_NISP_NAME 30
+#define DH6OPT_SNTP_SERVERS 31
+#define DH6OPT_LIFETIME 32
+#define DH6OPT_BCMCS_SERVER_D 33
+#define DH6OPT_BCMCS_SERVER_A 34
+#define DH6OPT_GEOCONF_CIVIC 36
+#define DH6OPT_REMOTE_ID 37
+#define DH6OPT_SUBSCRIBER_ID 38
+#define DH6OPT_CLIENT_FQDN 39
+#define DH6OPT_PANA_AGENT 40
+#define DH6OPT_NEW_POSIX_TIMEZONE 41
+#define DH6OPT_NEW_TZDB_TIMEZONE 42
+#define DH6OPT_ERO 43
+#define DH6OPT_LQ_QUERY 44
+#define DH6OPT_CLIENT_DATA 45
+#define DH6OPT_CLT_TIME 46
+#define DH6OPT_LQ_RELAY_DATA 47
+#define DH6OPT_LQ_CLIENT_LINK 48
+#define DH6OPT_NTP_SERVER 56
+# define DH6OPT_NTP_SUBOPTION_SRV_ADDR 1
+# define DH6OPT_NTP_SUBOPTION_MC_ADDR 2
+# define DH6OPT_NTP_SUBOPTION_SRV_FQDN 3
+#define DH6OPT_AFTR_NAME 64
+#define DH6OPT_MUDURL 112
+
+static const struct tok dh6opt_str[] = {
+ { DH6OPT_CLIENTID, "client-ID" },
+ { DH6OPT_SERVERID, "server-ID" },
+ { DH6OPT_IA_NA, "IA_NA" },
+ { DH6OPT_IA_TA, "IA_TA" },
+ { DH6OPT_IA_ADDR, "IA_ADDR" },
+ { DH6OPT_ORO, "option-request" },
+ { DH6OPT_PREFERENCE, "preference" },
+ { DH6OPT_ELAPSED_TIME, "elapsed-time" },
+ { DH6OPT_RELAY_MSG, "relay-message" },
+ { DH6OPT_AUTH, "authentication" },
+ { DH6OPT_UNICAST, "server-unicast" },
+ { DH6OPT_STATUS_CODE, "status-code" },
+ { DH6OPT_RAPID_COMMIT, "rapid-commit" },
+ { DH6OPT_USER_CLASS, "user-class" },
+ { DH6OPT_VENDOR_CLASS, "vendor-class" },
+ { DH6OPT_VENDOR_OPTS, "vendor-specific-info" },
+ { DH6OPT_INTERFACE_ID, "interface-ID" },
+ { DH6OPT_RECONF_MSG, "reconfigure-message" },
+ { DH6OPT_RECONF_ACCEPT, "reconfigure-accept" },
+ { DH6OPT_SIP_SERVER_D, "SIP-servers-domain" },
+ { DH6OPT_SIP_SERVER_A, "SIP-servers-address" },
+ { DH6OPT_DNS_SERVERS, "DNS-server" },
+ { DH6OPT_DOMAIN_LIST, "DNS-search-list" },
+ { DH6OPT_IA_PD, "IA_PD" },
+ { DH6OPT_IA_PD_PREFIX, "IA_PD-prefix" },
+ { DH6OPT_SNTP_SERVERS, "SNTP-servers" },
+ { DH6OPT_LIFETIME, "lifetime" },
+ { DH6OPT_NIS_SERVERS, "NIS-server" },
+ { DH6OPT_NISP_SERVERS, "NIS+-server" },
+ { DH6OPT_NIS_NAME, "NIS-domain-name" },
+ { DH6OPT_NISP_NAME, "NIS+-domain-name" },
+ { DH6OPT_BCMCS_SERVER_D, "BCMCS-domain-name" },
+ { DH6OPT_BCMCS_SERVER_A, "BCMCS-server" },
+ { DH6OPT_GEOCONF_CIVIC, "Geoconf-Civic" },
+ { DH6OPT_REMOTE_ID, "Remote-ID" },
+ { DH6OPT_SUBSCRIBER_ID, "Subscriber-ID" },
+ { DH6OPT_CLIENT_FQDN, "Client-FQDN" },
+ { DH6OPT_PANA_AGENT, "PANA-agent" },
+ { DH6OPT_NEW_POSIX_TIMEZONE, "POSIX-timezone" },
+ { DH6OPT_NEW_TZDB_TIMEZONE, "POSIX-tz-database" },
+ { DH6OPT_ERO, "Echo-request-option" },
+ { DH6OPT_LQ_QUERY, "Lease-query" },
+ { DH6OPT_CLIENT_DATA, "LQ-client-data" },
+ { DH6OPT_CLT_TIME, "Clt-time" },
+ { DH6OPT_LQ_RELAY_DATA, "LQ-relay-data" },
+ { DH6OPT_LQ_CLIENT_LINK, "LQ-client-link" },
+ { DH6OPT_NTP_SERVER, "NTP-server" },
+ { DH6OPT_AFTR_NAME, "AFTR-Name" },
+ { DH6OPT_MUDURL, "MUD-URL" },
+ { 0, NULL }
+};
-/*
- * The followings are also unassigned numbers.
- * We temporarily use values as of KAME snap 20031013.
- */
-#define DH6OPT_IA_PD 33
-#define DH6OPT_IA_PD_PREFIX 34
-#define DH6OPT_NTP_SERVERS 35
+static const struct tok dh6opt_stcode_str[] = {
+ { DH6OPT_STCODE_SUCCESS, "Success" }, /* RFC3315 */
+ { DH6OPT_STCODE_UNSPECFAIL, "UnspecFail" }, /* RFC3315 */
+ { DH6OPT_STCODE_NOADDRAVAIL, "NoAddrsAvail" }, /* RFC3315 */
+ { DH6OPT_STCODE_NOBINDING, "NoBinding" }, /* RFC3315 */
+ { DH6OPT_STCODE_NOTONLINK, "NotOnLink" }, /* RFC3315 */
+ { DH6OPT_STCODE_USEMULTICAST, "UseMulticast" }, /* RFC3315 */
+ { DH6OPT_STCODE_NOPREFIXAVAIL, "NoPrefixAvail" }, /* RFC3633 */
+ { DH6OPT_STCODE_UNKNOWNQUERYTYPE, "UnknownQueryType" }, /* RFC5007 */
+ { DH6OPT_STCODE_MALFORMEDQUERY, "MalformedQuery" }, /* RFC5007 */
+ { DH6OPT_STCODE_NOTCONFIGURED, "NotConfigured" }, /* RFC5007 */
+ { DH6OPT_STCODE_NOTALLOWED, "NotAllowed" }, /* RFC5007 */
+ { 0, NULL }
+};
struct dhcp6opt {
- u_int16_t dh6opt_type;
- u_int16_t dh6opt_len;
+ nd_uint16_t dh6opt_type;
+ nd_uint16_t dh6opt_len;
/* type-dependent data follows */
};
-struct dhcp6_ia {
- u_int16_t dh6opt_ia_type;
- u_int16_t dh6opt_ia_len;
- u_int32_t dh6opt_ia_iaid;
- u_int32_t dh6opt_ia_t1;
- u_int32_t dh6opt_ia_t2;
-};
-
-struct dhcp6_ia_prefix {
- u_int16_t dh6opt_ia_prefix_type;
- u_int16_t dh6opt_ia_prefix_len;
- u_int32_t dh6opt_ia_prefix_pltime;
- u_int32_t dh6opt_ia_prefix_vltime;
- u_int8_t dh6opt_ia_prefix_plen;
- struct in6_addr dh6opt_ia_prefix_addr;
-} __attribute__ ((__packed__));
-
static const char *
-dhcp6opt_name(int type)
+dhcp6stcode(const uint16_t code)
{
- static char genstr[sizeof("opt_65535") + 1]; /* XXX thread unsafe */
-
- if (type > 65535)
- return "INVALID option";
-
- switch(type) {
- case DH6OPT_CLIENTID:
- return "client ID";
- case DH6OPT_SERVERID:
- return "server ID";
- case DH6OPT_IA_NA:
- return "IA_NA";
- case DH6OPT_ORO:
- return "option request";
- case DH6OPT_PREFERENCE:
- return "preference";
- case DH6OPT_ELAPSED_TIME:
- return "elapsed time";
- case DH6OPT_RELAY_MSG:
- return "relay message";
- case DH6OPT_STATUS_CODE:
- return "status code";
- case DH6OPT_RAPID_COMMIT:
- return "rapid commit";
- case DH6OPT_INTERFACE_ID:
- return "interface ID";
- case DH6OPT_RECONF_MSG:
- return "reconfigure message";
- case DH6OPT_RECONF_ACCEPT:
- return "reconfigure accept";
- case DH6OPT_SIP_SERVER_D:
- return "SIP Servers Domain";
- case DH6OPT_SIP_SERVER_A:
- return "SIP Servers Address";
- case DH6OPT_DNS:
- return "DNS";
- case DH6OPT_PREFIX_DELEGATION:
- return "prefix delegation";
- case DH6OPT_PREFIX_INFORMATION:
- return "prefix information";
- case DH6OPT_IA_PD:
- return "IA_PD";
- case DH6OPT_IA_PD_PREFIX:
- return "IA_PD prefix";
- case DH6OPT_NTP_SERVERS:
- return "NTP Server";
- default:
- snprintf(genstr, sizeof(genstr), "opt_%d", type);
- return(genstr);
- }
-}
-
-static const char *
-dhcp6stcode(int code)
-{
- static char genstr[sizeof("code255") + 1]; /* XXX thread unsafe */
-
- if (code > 255)
- return "INVALID code";
-
- switch(code) {
- case DH6OPT_STCODE_SUCCESS:
- return "success";
- case DH6OPT_STCODE_UNSPECFAIL:
- return "unspec failure";
- case DH6OPT_STCODE_NOADDRAVAIL:
- return "no addresses";
- case DH6OPT_STCODE_NOBINDING:
- return "no binding";
- case DH6OPT_STCODE_NOTONLINK:
- return "not on-link";
- case DH6OPT_STCODE_USEMULTICAST:
- return "use multicast";
- case DH6OPT_STCODE_NOPREFIXAVAIL:
- return "no prefixes";
- default:
- snprintf(genstr, sizeof(genstr), "code%d", code);
- return(genstr);
- }
+ return code > 255 ? "INVALID code" : tok2str(dh6opt_stcode_str, "code%u", code);
}
static void
-dhcp6opt_print(const u_char *cp, const u_char *ep)
+dhcp6opt_print(netdissect_options *ndo,
+ const u_char *cp, const u_char *ep)
{
- struct dhcp6opt *dh6o;
- u_char *tp;
+ const struct dhcp6opt *dh6o;
+ const u_char *tp;
size_t i;
- u_int16_t opttype;
+ uint16_t opttype;
size_t optlen;
- u_int16_t val16;
- u_int32_t val32;
- struct in6_addr addr6;
- struct dhcp6_ia ia;
- struct dhcp6_ia_prefix ia_prefix;
+ uint8_t auth_proto;
+ u_int authinfolen, authrealmlen;
+ int remain_len; /* Length of remaining options */
+ int label_len; /* Label length */
+ uint16_t subopt_code;
+ uint16_t subopt_len;
if (cp == ep)
return;
while (cp < ep) {
if (ep < cp + sizeof(*dh6o))
goto trunc;
- dh6o = (struct dhcp6opt *)cp;
+ dh6o = (const struct dhcp6opt *)cp;
+ ND_TCHECK(*dh6o);
optlen = EXTRACT_16BITS(&dh6o->dh6opt_len);
if (ep < cp + sizeof(*dh6o) + optlen)
goto trunc;
opttype = EXTRACT_16BITS(&dh6o->dh6opt_type);
- printf(" (%s", dhcp6opt_name(opttype));
+ ND_PRINT((ndo, " (%s", tok2str(dh6opt_str, "opt_%u", opttype)));
+ ND_TCHECK2(*(cp + sizeof(*dh6o)), optlen);
switch (opttype) {
case DH6OPT_CLIENTID:
case DH6OPT_SERVERID:
if (optlen < 2) {
/*(*/
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
break;
}
- tp = (u_char *)(dh6o + 1);
+ tp = (const u_char *)(dh6o + 1);
switch (EXTRACT_16BITS(tp)) {
case 1:
if (optlen >= 2 + 6) {
- printf(" hwaddr/time type %u time %u ",
+ ND_PRINT((ndo, " hwaddr/time type %u time %u ",
EXTRACT_16BITS(&tp[2]),
- EXTRACT_32BITS(&tp[4]));
+ EXTRACT_32BITS(&tp[4])));
for (i = 8; i < optlen; i++)
- printf("%02x", tp[i]);
+ ND_PRINT((ndo, "%02x", tp[i]));
/*(*/
- printf(")");
+ ND_PRINT((ndo, ")"));
} else {
/*(*/
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
}
break;
case 2:
if (optlen >= 2 + 8) {
- printf(" vid ");
+ ND_PRINT((ndo, " vid "));
for (i = 2; i < 2 + 8; i++)
- printf("%02x", tp[i]);
+ ND_PRINT((ndo, "%02x", tp[i]));
/*(*/
- printf(")");
+ ND_PRINT((ndo, ")"));
} else {
/*(*/
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
}
break;
case 3:
if (optlen >= 2 + 2) {
- printf(" hwaddr type %u ",
- EXTRACT_16BITS(&tp[2]));
+ ND_PRINT((ndo, " hwaddr type %u ",
+ EXTRACT_16BITS(&tp[2])));
for (i = 4; i < optlen; i++)
- printf("%02x", tp[i]);
+ ND_PRINT((ndo, "%02x", tp[i]));
/*(*/
- printf(")");
+ ND_PRINT((ndo, ")"));
} else {
/*(*/
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
}
break;
default:
- printf(" type %d)", EXTRACT_16BITS(tp));
+ ND_PRINT((ndo, " type %d)", EXTRACT_16BITS(tp)));
+ break;
+ }
+ break;
+ case DH6OPT_IA_ADDR:
+ if (optlen < 24) {
+ /*(*/
+ ND_PRINT((ndo, " ?)"));
break;
}
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %s", ip6addr_string(ndo, &tp[0])));
+ ND_PRINT((ndo, " pltime:%u vltime:%u",
+ EXTRACT_32BITS(&tp[16]),
+ EXTRACT_32BITS(&tp[20])));
+ if (optlen > 24) {
+ /* there are sub-options */
+ dhcp6opt_print(ndo, tp + 24, tp + optlen);
+ }
+ ND_PRINT((ndo, ")"));
break;
case DH6OPT_ORO:
+ case DH6OPT_ERO:
if (optlen % 2) {
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
break;
}
- tp = (u_char *)(dh6o + 1);
+ tp = (const u_char *)(dh6o + 1);
for (i = 0; i < optlen; i += 2) {
- u_int16_t opt;
-
- memcpy(&opt, &tp[i], sizeof(opt));
- printf(" %s", dhcp6opt_name(ntohs(opt)));
+ ND_PRINT((ndo, " %s",
+ tok2str(dh6opt_str, "opt_%u", EXTRACT_16BITS(&tp[i]))));
}
- printf(")");
+ ND_PRINT((ndo, ")"));
break;
case DH6OPT_PREFERENCE:
if (optlen != 1) {
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
break;
}
- printf(" %d)", *((u_char *)(dh6o + 1) + 1));
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %d)", *tp));
break;
case DH6OPT_ELAPSED_TIME:
if (optlen != 2) {
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
break;
}
- memcpy(&val16, dh6o + 1, sizeof(val16));
- val16 = ntohs(val16);
- printf(" %d)", (int)val16);
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %d)", EXTRACT_16BITS(tp)));
break;
case DH6OPT_RELAY_MSG:
- printf(" (");
- dhcp6_print((const u_char *)(dh6o + 1), optlen, 0, 0);
- printf(")");
+ ND_PRINT((ndo, " ("));
+ tp = (const u_char *)(dh6o + 1);
+ dhcp6_print(ndo, tp, optlen);
+ ND_PRINT((ndo, ")"));
+ break;
+ case DH6OPT_AUTH:
+ if (optlen < 11) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ auth_proto = *tp;
+ switch (auth_proto) {
+ case DH6OPT_AUTHPROTO_DELAYED:
+ ND_PRINT((ndo, " proto: delayed"));
+ break;
+ case DH6OPT_AUTHPROTO_RECONFIG:
+ ND_PRINT((ndo, " proto: reconfigure"));
+ break;
+ default:
+ ND_PRINT((ndo, " proto: %d", auth_proto));
+ break;
+ }
+ tp++;
+ switch (*tp) {
+ case DH6OPT_AUTHALG_HMACMD5:
+ /* XXX: may depend on the protocol */
+ ND_PRINT((ndo, ", alg: HMAC-MD5"));
+ break;
+ default:
+ ND_PRINT((ndo, ", alg: %d", *tp));
+ break;
+ }
+ tp++;
+ switch (*tp) {
+ case DH6OPT_AUTHRDM_MONOCOUNTER:
+ ND_PRINT((ndo, ", RDM: mono"));
+ break;
+ default:
+ ND_PRINT((ndo, ", RDM: %d", *tp));
+ break;
+ }
+ tp++;
+ ND_PRINT((ndo, ", RD:"));
+ for (i = 0; i < 4; i++, tp += 2)
+ ND_PRINT((ndo, " %04x", EXTRACT_16BITS(tp)));
+
+ /* protocol dependent part */
+ authinfolen = optlen - 11;
+ switch (auth_proto) {
+ case DH6OPT_AUTHPROTO_DELAYED:
+ if (authinfolen == 0)
+ break;
+ if (authinfolen < 20) {
+ ND_PRINT((ndo, " ??"));
+ break;
+ }
+ authrealmlen = authinfolen - 20;
+ if (authrealmlen > 0) {
+ ND_PRINT((ndo, ", realm: "));
+ }
+ for (i = 0; i < authrealmlen; i++, tp++)
+ ND_PRINT((ndo, "%02x", *tp));
+ ND_PRINT((ndo, ", key ID: %08x", EXTRACT_32BITS(tp)));
+ tp += 4;
+ ND_PRINT((ndo, ", HMAC-MD5:"));
+ for (i = 0; i < 4; i++, tp+= 4)
+ ND_PRINT((ndo, " %08x", EXTRACT_32BITS(tp)));
+ break;
+ case DH6OPT_AUTHPROTO_RECONFIG:
+ if (authinfolen != 17) {
+ ND_PRINT((ndo, " ??"));
+ break;
+ }
+ switch (*tp++) {
+ case DH6OPT_AUTHRECONFIG_KEY:
+ ND_PRINT((ndo, " reconfig-key"));
+ break;
+ case DH6OPT_AUTHRECONFIG_HMACMD5:
+ ND_PRINT((ndo, " type: HMAC-MD5"));
+ break;
+ default:
+ ND_PRINT((ndo, " type: ??"));
+ break;
+ }
+ ND_PRINT((ndo, " value:"));
+ for (i = 0; i < 4; i++, tp+= 4)
+ ND_PRINT((ndo, " %08x", EXTRACT_32BITS(tp)));
+ break;
+ default:
+ ND_PRINT((ndo, " ??"));
+ break;
+ }
+
+ ND_PRINT((ndo, ")"));
break;
case DH6OPT_RAPID_COMMIT: /* nothing todo */
- printf(")");
+ ND_PRINT((ndo, ")"));
break;
case DH6OPT_INTERFACE_ID:
+ case DH6OPT_SUBSCRIBER_ID:
/*
* Since we cannot predict the encoding, print hex dump
* at most 10 characters.
*/
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " "));
for (i = 0; i < optlen && i < 10; i++)
- printf("%02x", ((u_char *)(dh6o + 1))[i]);
+ ND_PRINT((ndo, "%02x", tp[i]));
+ ND_PRINT((ndo, "...)"));
break;
case DH6OPT_RECONF_MSG:
- tp = (u_char *)(dh6o + 1);
+ if (optlen != 1) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
switch (*tp) {
case DH6_RENEW:
- printf(" for renew)");
+ ND_PRINT((ndo, " for renew)"));
break;
case DH6_INFORM_REQ:
- printf(" for inf-req)");
+ ND_PRINT((ndo, " for inf-req)"));
break;
default:
- printf(" for ???(%02x))", *tp);
+ ND_PRINT((ndo, " for ?\?\?(%02x))", *tp));
break;
}
break;
case DH6OPT_RECONF_ACCEPT: /* nothing todo */
- printf(")");
+ ND_PRINT((ndo, ")"));
break;
case DH6OPT_SIP_SERVER_A:
- case DH6OPT_DNS:
- case DH6OPT_NTP_SERVERS:
+ case DH6OPT_DNS_SERVERS:
+ case DH6OPT_SNTP_SERVERS:
+ case DH6OPT_NIS_SERVERS:
+ case DH6OPT_NISP_SERVERS:
+ case DH6OPT_BCMCS_SERVER_A:
+ case DH6OPT_PANA_AGENT:
+ case DH6OPT_LQ_CLIENT_LINK:
if (optlen % 16) {
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
break;
}
- tp = (u_char *)(dh6o + 1);
+ tp = (const u_char *)(dh6o + 1);
for (i = 0; i < optlen; i += 16)
- printf(" %s", ip6addr_string(&tp[i]));
- printf(")");
+ ND_PRINT((ndo, " %s", ip6addr_string(ndo, &tp[i])));
+ ND_PRINT((ndo, ")"));
break;
- case DH6OPT_PREFIX_DELEGATION:
- dhcp6opt_print((u_char *)(dh6o + 1),
- (u_char *)(dh6o + 1) + optlen);
- printf(")");
- break;
- case DH6OPT_PREFIX_INFORMATION:
- if (optlen % 21)
- printf(" ?)");
- memcpy(&addr6, (u_char *)(dh6o + 1) + 5,
- sizeof(addr6));
- printf(" %s/%d", ip6addr_string(&addr6),
- (int)*((u_char *)(dh6o + 1) + 4));
- memcpy(&val32, dh6o + 1, sizeof(val32));
- val32 = ntohl(val32);
- if (val32 == DHCP6_DURATITION_INFINITE)
- printf(" lease-duration: infinite)");
- else
- printf(" lease-duration: %u)", val32);
+ case DH6OPT_SIP_SERVER_D:
+ case DH6OPT_DOMAIN_LIST:
+ tp = (const u_char *)(dh6o + 1);
+ while (tp < cp + sizeof(*dh6o) + optlen) {
+ ND_PRINT((ndo, " "));
+ if ((tp = ns_nprint(ndo, tp, cp + sizeof(*dh6o) + optlen)) == NULL)
+ goto trunc;
+ }
+ ND_PRINT((ndo, ")"));
break;
case DH6OPT_STATUS_CODE:
if (optlen < 2) {
- printf(" ?)");
+ ND_PRINT((ndo, " ?)"));
break;
}
- memcpy(&val16, (u_char *)(dh6o + 1), sizeof(val16));
- val16 = ntohs(val16);
- printf(" %s)", dhcp6stcode(val16));
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %s)", dhcp6stcode(EXTRACT_16BITS(&tp[0]))));
break;
case DH6OPT_IA_NA:
case DH6OPT_IA_PD:
- if (optlen < sizeof(ia) - 4) {
- printf(" ?)");
- break;
- }
- memcpy(&ia, (u_char *)dh6o, sizeof(ia));
- ia.dh6opt_ia_iaid = ntohl(ia.dh6opt_ia_iaid);
- ia.dh6opt_ia_t1 = ntohl(ia.dh6opt_ia_t1);
- ia.dh6opt_ia_t2 = ntohl(ia.dh6opt_ia_t2);
- printf(" IAID:%lu T1:%lu T2:%lu",
- (unsigned long)ia.dh6opt_ia_iaid,
- (unsigned long)ia.dh6opt_ia_t1,
- (unsigned long)ia.dh6opt_ia_t2);
- if (optlen > sizeof(ia) - 4) {
+ if (optlen < 12) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " IAID:%u T1:%u T2:%u",
+ EXTRACT_32BITS(&tp[0]),
+ EXTRACT_32BITS(&tp[4]),
+ EXTRACT_32BITS(&tp[8])));
+ if (optlen > 12) {
/* there are sub-options */
- dhcp6opt_print((u_char *)dh6o + sizeof(ia),
- (u_char *)(dh6o + 1) + optlen);
+ dhcp6opt_print(ndo, tp + 12, tp + optlen);
}
- printf(")");
+ ND_PRINT((ndo, ")"));
+ break;
+ case DH6OPT_IA_TA:
+ if (optlen < 4) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " IAID:%u", EXTRACT_32BITS(tp)));
+ if (optlen > 4) {
+ /* there are sub-options */
+ dhcp6opt_print(ndo, tp + 4, tp + optlen);
+ }
+ ND_PRINT((ndo, ")"));
break;
case DH6OPT_IA_PD_PREFIX:
- if (optlen < sizeof(ia_prefix) - 4) {
- printf(" ?)");
- break;
- }
- memcpy(&ia_prefix, (u_char *)dh6o, sizeof(ia_prefix));
- printf(" %s/%d",
- ip6addr_string(&ia_prefix.dh6opt_ia_prefix_addr),
- ia_prefix.dh6opt_ia_prefix_plen);
- ia_prefix.dh6opt_ia_prefix_pltime =
- ntohl(ia_prefix.dh6opt_ia_prefix_pltime);
- ia_prefix.dh6opt_ia_prefix_vltime =
- ntohl(ia_prefix.dh6opt_ia_prefix_vltime);
- printf(" pltime:%lu vltime:%lu",
- (unsigned long)ia_prefix.dh6opt_ia_prefix_pltime,
- (unsigned long)ia_prefix.dh6opt_ia_prefix_vltime);
- if (optlen > sizeof(ia_prefix) - 4) {
+ if (optlen < 25) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %s/%d", ip6addr_string(ndo, &tp[9]), tp[8]));
+ ND_PRINT((ndo, " pltime:%u vltime:%u",
+ EXTRACT_32BITS(&tp[0]),
+ EXTRACT_32BITS(&tp[4])));
+ if (optlen > 25) {
/* there are sub-options */
- dhcp6opt_print((u_char *)dh6o +
- sizeof(ia_prefix),
- (u_char *)(dh6o + 1) + optlen);
+ dhcp6opt_print(ndo, tp + 25, tp + optlen);
}
- printf(")");
+ ND_PRINT((ndo, ")"));
break;
+ case DH6OPT_LIFETIME:
+ case DH6OPT_CLT_TIME:
+ if (optlen != 4) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %d)", EXTRACT_32BITS(tp)));
+ break;
+ case DH6OPT_REMOTE_ID:
+ if (optlen < 4) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %d ", EXTRACT_32BITS(tp)));
+ /*
+ * Print hex dump first 10 characters.
+ */
+ for (i = 4; i < optlen && i < 14; i++)
+ ND_PRINT((ndo, "%02x", tp[i]));
+ ND_PRINT((ndo, "...)"));
+ break;
+ case DH6OPT_LQ_QUERY:
+ if (optlen < 17) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ switch (*tp) {
+ case 1:
+ ND_PRINT((ndo, " by-address"));
+ break;
+ case 2:
+ ND_PRINT((ndo, " by-clientID"));
+ break;
+ default:
+ ND_PRINT((ndo, " type_%d", (int)*tp));
+ break;
+ }
+ ND_PRINT((ndo, " %s", ip6addr_string(ndo, &tp[1])));
+ if (optlen > 17) {
+ /* there are query-options */
+ dhcp6opt_print(ndo, tp + 17, tp + optlen);
+ }
+ ND_PRINT((ndo, ")"));
+ break;
+ case DH6OPT_CLIENT_DATA:
+ tp = (const u_char *)(dh6o + 1);
+ if (optlen > 0) {
+ /* there are encapsulated options */
+ dhcp6opt_print(ndo, tp, tp + optlen);
+ }
+ ND_PRINT((ndo, ")"));
+ break;
+ case DH6OPT_LQ_RELAY_DATA:
+ if (optlen < 16) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, " %s ", ip6addr_string(ndo, &tp[0])));
+ /*
+ * Print hex dump first 10 characters.
+ */
+ for (i = 16; i < optlen && i < 26; i++)
+ ND_PRINT((ndo, "%02x", tp[i]));
+ ND_PRINT((ndo, "...)"));
+ break;
+ case DH6OPT_NTP_SERVER:
+ if (optlen < 4) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ while (tp < cp + sizeof(*dh6o) + optlen - 4) {
+ subopt_code = EXTRACT_16BITS(tp);
+ tp += 2;
+ subopt_len = EXTRACT_16BITS(tp);
+ tp += 2;
+ if (tp + subopt_len > cp + sizeof(*dh6o) + optlen)
+ goto trunc;
+ ND_PRINT((ndo, " subopt:%d", subopt_code));
+ switch (subopt_code) {
+ case DH6OPT_NTP_SUBOPTION_SRV_ADDR:
+ case DH6OPT_NTP_SUBOPTION_MC_ADDR:
+ if (subopt_len != 16) {
+ ND_PRINT((ndo, " ?"));
+ break;
+ }
+ ND_PRINT((ndo, " %s", ip6addr_string(ndo, &tp[0])));
+ break;
+ case DH6OPT_NTP_SUBOPTION_SRV_FQDN:
+ ND_PRINT((ndo, " "));
+ if (ns_nprint(ndo, tp, tp + subopt_len) == NULL)
+ goto trunc;
+ break;
+ default:
+ ND_PRINT((ndo, " ?"));
+ break;
+ }
+ tp += subopt_len;
+ }
+ ND_PRINT((ndo, ")"));
+ break;
+ case DH6OPT_AFTR_NAME:
+ if (optlen < 3) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ remain_len = optlen;
+ ND_PRINT((ndo, " "));
+ /* Encoding is described in section 3.1 of RFC 1035 */
+ while (remain_len && *tp) {
+ label_len = *tp++;
+ if (label_len < remain_len - 1) {
+ (void)fn_printn(ndo, tp, label_len, NULL);
+ tp += label_len;
+ remain_len -= (label_len + 1);
+ if(*tp) ND_PRINT((ndo, "."));
+ } else {
+ ND_PRINT((ndo, " ?"));
+ break;
+ }
+ }
+ ND_PRINT((ndo, ")"));
+ break;
+ case DH6OPT_NEW_POSIX_TIMEZONE: /* all three of these options */
+ case DH6OPT_NEW_TZDB_TIMEZONE: /* are encoded similarly */
+ case DH6OPT_MUDURL: /* although GMT might not work */
+ if (optlen < 5) {
+ ND_PRINT((ndo, " ?)"));
+ break;
+ }
+ tp = (const u_char *)(dh6o + 1);
+ ND_PRINT((ndo, "="));
+ (void)fn_printn(ndo, tp, (u_int)optlen, NULL);
+ ND_PRINT((ndo, ")"));
+ break;
+
default:
- printf(")");
+ ND_PRINT((ndo, ")"));
break;
}
return;
trunc:
- printf("[|dhcp6ext]");
+ ND_PRINT((ndo, "[|dhcp6ext]"));
}
/*
* Print dhcp6 packets
*/
void
-dhcp6_print(const u_char *cp, u_int length,
- u_int16_t sport, u_int16_t dport)
+dhcp6_print(netdissect_options *ndo,
+ const u_char *cp, u_int length)
{
- struct dhcp6 *dh6;
- struct dhcp6_relay *dh6relay;
+ const struct dhcp6 *dh6;
+ const struct dhcp6_relay *dh6relay;
const u_char *ep;
- u_char *extp;
+ const u_char *extp;
const char *name;
- printf("dhcp6");
+ ND_PRINT((ndo, "dhcp6"));
- ep = (u_char *)snapend;
+ ep = (const u_char *)ndo->ndo_snapend;
if (cp + length < ep)
ep = cp + length;
- dh6 = (struct dhcp6 *)cp;
- dh6relay = (struct dhcp6_relay *)cp;
- TCHECK(dh6->dh6_xid);
- switch (dh6->dh6_msgtype) {
- case DH6_SOLICIT:
- name = "solicit";
- break;
- case DH6_ADVERTISE:
- name = "advertise";
- break;
- case DH6_REQUEST:
- name = "request";
- break;
- case DH6_CONFIRM:
- name = "confirm";
- break;
- case DH6_RENEW:
- name = "renew";
- break;
- case DH6_REBIND:
- name = "rebind";
- break;
- case DH6_REPLY:
- name = "reply";
- break;
- case DH6_RELEASE:
- name = "release";
- break;
- case DH6_DECLINE:
- name = "decline";
- break;
- case DH6_RECONFIGURE:
- name = "reconfigure";
- break;
- case DH6_INFORM_REQ:
- name= "inf-req";
- break;
- case DH6_RELAY_FORW:
- name= "relay-fwd";
- break;
- case DH6_RELAY_REPLY:
- name= "relay-reply";
- break;
- default:
- name = NULL;
- break;
- }
+ dh6 = (const struct dhcp6 *)cp;
+ dh6relay = (const struct dhcp6_relay *)cp;
+ ND_TCHECK(dh6->dh6_xid);
+ name = tok2str(dh6_msgtype_str, "msgtype-%u", dh6->dh6_msgtype);
- if (!vflag) {
- if (name)
- printf(" %s", name);
- else if (dh6->dh6_msgtype != DH6_RELAY_FORW &&
- dh6->dh6_msgtype != DH6_RELAY_REPLY) {
- printf(" msgtype-%u", dh6->dh6_msgtype);
- }
+ if (!ndo->ndo_vflag) {
+ ND_PRINT((ndo, " %s", name));
return;
}
/* XXX relay agent messages have to be handled differently */
- if (name)
- printf(" %s (", name); /*)*/
- else
- printf(" msgtype-%u (", dh6->dh6_msgtype); /*)*/
+ ND_PRINT((ndo, " %s (", name)); /*)*/
if (dh6->dh6_msgtype != DH6_RELAY_FORW &&
dh6->dh6_msgtype != DH6_RELAY_REPLY) {
- printf("xid=%x", EXTRACT_32BITS(&dh6->dh6_xid) & DH6_XIDMASK);
- extp = (u_char *)(dh6 + 1);
- dhcp6opt_print(extp, ep);
+ ND_PRINT((ndo, "xid=%x", EXTRACT_32BITS(&dh6->dh6_xid) & DH6_XIDMASK));
+ extp = (const u_char *)(dh6 + 1);
+ dhcp6opt_print(ndo, extp, ep);
} else { /* relay messages */
struct in6_addr addr6;
- TCHECK(dh6relay->dh6relay_peeraddr);
+ ND_TCHECK(dh6relay->dh6relay_peeraddr);
memcpy(&addr6, dh6relay->dh6relay_linkaddr, sizeof (addr6));
- printf("linkaddr=%s", ip6addr_string(&addr6));
+ ND_PRINT((ndo, "linkaddr=%s", ip6addr_string(ndo, &addr6)));
memcpy(&addr6, dh6relay->dh6relay_peeraddr, sizeof (addr6));
- printf(" peeraddr=%s", ip6addr_string(&addr6));
+ ND_PRINT((ndo, " peeraddr=%s", ip6addr_string(ndo, &addr6)));
- dhcp6opt_print((u_char *)(dh6relay + 1), ep);
+ dhcp6opt_print(ndo, (const u_char *)(dh6relay + 1), ep);
}
/*(*/
- printf(")");
+ ND_PRINT((ndo, ")"));
return;
trunc:
- printf("[|dhcp6]");
+ ND_PRINT((ndo, "[|dhcp6]"));
}
projects / tcpdump / blobdiff