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DHCPv6: Add DUID-UUID printing (RFC6355)

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Define DUID_LLT, DUID_EN, DUID_LL and DUID_UUID.

Add a test file.
This commit is contained in:
Francois-Xavier Le Bail 2023-07-07 16:00:28 +02:00
parent 46c1b8d227
commit 1e3b959bf0
4 changed files with 23 additions and 3 deletions
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23
print-dhcp6.c
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@ -121,6 +121,10 @@ struct dhcp6_relay {
/* options */
#define DH6OPT_CLIENTID 1
#define DH6OPT_SERVERID 2
# define DUID_LLT 1 /* RFC8415 */
# define DUID_EN 2 /* RFC8415 */
# define DUID_LL 3 /* RFC8415 */
# define DUID_UUID 4 /* RFC6355 */
#define DH6OPT_IA_NA 3
#define DH6OPT_IA_TA 4
#define DH6OPT_IA_ADDR 5
@ -320,7 +324,7 @@ dhcp6opt_print(netdissect_options *ndo,
}
tp = (const u_char *)(dh6o + 1);
switch (GET_BE_U_2(tp)) {
case 1:
case DUID_LLT:
if (optlen >= 2 + 6) {
ND_PRINT(" hwaddr/time type %u time %u ",
GET_BE_U_2(tp + 2),
@ -335,7 +339,7 @@ dhcp6opt_print(netdissect_options *ndo,
ND_PRINT(" ?)");
}
break;
case 2:
case DUID_EN:
if (optlen >= 2 + 4) {
ND_PRINT(" enterprise %u ", GET_BE_U_4(tp + 2));
for (i = 2 + 4; i < optlen; i++)
@ -348,7 +352,7 @@ dhcp6opt_print(netdissect_options *ndo,
ND_PRINT(" ?)");
}
break;
case 3:
case DUID_LL:
if (optlen >= 2 + 2) {
ND_PRINT(" hwaddr type %u ",
GET_BE_U_2(tp + 2));
@ -362,6 +366,19 @@ dhcp6opt_print(netdissect_options *ndo,
ND_PRINT(" ?)");
}
break;
case DUID_UUID:
ND_PRINT(" uuid ");
if (optlen == 2 + 16) {
for (i = 2; i < optlen; i++)
ND_PRINT("%02x",
GET_U_1(tp + i));
/*(*/
ND_PRINT(")");
} else {
/*(*/
ND_PRINT(" ?)");
}
break;
default:
ND_PRINT(" type %u)", GET_BE_U_2(tp));
break;

1
tests/TESTLIST
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@ -259,6 +259,7 @@ dhcpv6-ntp-server dhcpv6-ntp-server.pcap dhcpv6-ntp-server.out -v
dhcpv6-sip-server-d dhcpv6-sip-server-d.pcap dhcpv6-sip-server-d.out -v
dhcpv6-domain-list dhcpv6-domain-list.pcap dhcpv6-domain-list.out -v
dhcpv6-mud dhcpv6-mud.pcap dhcpv6-mud.out -vv
dhcpv6-rfc6355-duid-uuid dhcpv6-rfc6355-duid-uuid.pcap dhcpv6-rfc6355-duid-uuid.out -v
# ZeroMQ/PGM tests
# ZMTP/1.0 over TCP

2
tests/dhcpv6-rfc6355-duid-uuid.out Normal file
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@ -0,0 +1,2 @@
1 11:19:08.826971 IP6 (flowlabel 0xd92bc, hlim 1, next-header UDP (17) payload length: 112) fe80::7e39:bc67:f367:8def.546 > ff02::1:2.547: [udp sum ok] dhcp6 renew (xid=9f56b (client-ID uuid a256e92e40abd0d2a3ab3b3ff2ff8998) (server-ID hwaddr type 1 a021b7e0d871) (option-request DNS-server DNS-search-list DNS-server DNS-search-list client-ID) (elapsed-time 0) (IA_NA IAID:971445380 T1:3600 T2:5400 (IA_ADDR 2a02:2788:7c8:4dd:4a5b:39ff:fee7:1484 pltime:7200 vltime:7500)))
2 11:19:08.827665 IP6 (hlim 128, next-header UDP (17) payload length: 140) fe80::a221:b7ff:fee0:d871.547 > fe80::7e39:bc67:f367:8def.546: [udp sum ok] dhcp6 reply (xid=9f56b (client-ID uuid a256e92e40abd0d2a3ab3b3ff2ff8998) (IA_NA IAID:971445380 T1:15 T2:45 (IA_ADDR 2a02:2788:7c8:4dd:4a5b:39ff:fee7:1484 pltime:30 vltime:60)) (DNS-server 2a02:2788:fff0:7::3 2a02:2788:fff0:5::140) (DNS-search-list voo.be.) (server-ID hwaddr type 1 a021b7e0d871))

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tests/dhcpv6-rfc6355-duid-uuid.pcap Normal file
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