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- /**
- * Copyright (C) 2012 Steven Barth <steven@midlink.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License version 2 for more details.
- *
- */
- #pragma once
- #define ALL_DHCPV6_RELAYS {{{0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02}}}
- #define ALL_DHCPV6_SERVERS {{{0xff, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x03}}}
- #define DHCPV6_CLIENT_PORT 546
- #define DHCPV6_SERVER_PORT 547
- #define DHCPV6_MSG_SOLICIT 1
- #define DHCPV6_MSG_ADVERTISE 2
- #define DHCPV6_MSG_REQUEST 3
- #define DHCPV6_MSG_CONFIRM 4
- #define DHCPV6_MSG_RENEW 5
- #define DHCPV6_MSG_REBIND 6
- #define DHCPV6_MSG_REPLY 7
- #define DHCPV6_MSG_RELEASE 8
- #define DHCPV6_MSG_DECLINE 9
- #define DHCPV6_MSG_RECONFIGURE 10
- #define DHCPV6_MSG_INFORMATION_REQUEST 11
- #define DHCPV6_MSG_RELAY_FORW 12
- #define DHCPV6_MSG_RELAY_REPL 13
- #define DHCPV6_OPT_CLIENTID 1
- #define DHCPV6_OPT_SERVERID 2
- #define DHCPV6_OPT_IA_NA 3
- #define DHCPV6_OPT_IA_ADDR 5
- #define DHCPV6_OPT_STATUS 13
- #define DHCPV6_OPT_RELAY_MSG 9
- #define DHCPV6_OPT_AUTH 11
- #define DHCPV6_OPT_INTERFACE_ID 18
- #define DHCPV6_OPT_RECONF_MSG 19
- #define DHCPV6_OPT_RECONF_ACCEPT 20
- #define DHCPV6_OPT_DNS_SERVERS 23
- #define DHCPV6_OPT_DNS_DOMAIN 24
- #define DHCPV6_OPT_IA_PD 25
- #define DHCPV6_OPT_IA_PREFIX 26
- #define DHCPV6_OPT_INFO_REFRESH 32
- #define DHCPV6_OPT_FQDN 39
- #define DHCPV6_DUID_VENDOR 2
- #define DHCPV6_STATUS_OK 0
- #define DHCPV6_STATUS_NOADDRSAVAIL 2
- #define DHCPV6_STATUS_NOBINDING 3
- #define DHCPV6_STATUS_NOTONLINK 4
- #define DHCPV6_STATUS_NOPREFIXAVAIL 6
- // I just remembered I have an old one lying around...
- #define DHCPV6_ENT_NO 30462
- #define DHCPV6_ENT_TYPE 1
- #define DHCPV6_HOP_COUNT_LIMIT 32
- struct dhcpv6_client_header {
- uint8_t msg_type;
- uint8_t transaction_id[3];
- } __attribute__((packed));
- struct dhcpv6_relay_header {
- uint8_t msg_type;
- uint8_t hop_count;
- struct in6_addr link_address;
- struct in6_addr peer_address;
- uint8_t options[];
- } __attribute__((packed));
- struct dhcpv6_relay_forward_envelope {
- uint8_t msg_type;
- uint8_t hop_count;
- struct in6_addr link_address;
- struct in6_addr peer_address;
- uint16_t interface_id_type;
- uint16_t interface_id_len;
- uint32_t interface_id_data;
- uint16_t relay_message_type;
- uint16_t relay_message_len;
- } __attribute__((packed));
- struct dhcpv6_auth_reconfigure {
- uint16_t type;
- uint16_t len;
- uint8_t protocol;
- uint8_t algorithm;
- uint8_t rdm;
- uint32_t replay[2];
- uint8_t reconf_type;
- uint8_t key[16];
- } _packed;
- struct dhcpv6_ia_hdr {
- uint16_t type;
- uint16_t len;
- uint32_t iaid;
- uint32_t t1;
- uint32_t t2;
- } _packed;
- struct dhcpv6_ia_prefix {
- uint16_t type;
- uint16_t len;
- uint32_t preferred;
- uint32_t valid;
- uint8_t prefix;
- struct in6_addr addr;
- } _packed;
- struct dhcpv6_ia_addr {
- uint16_t type;
- uint16_t len;
- struct in6_addr addr;
- uint32_t preferred;
- uint32_t valid;
- } _packed;
- struct dhcpv6_assignment {
- struct list_head head;
- struct sockaddr_in6 peer;
- time_t valid_until;
- time_t reconf_sent;
- int reconf_cnt;
- char *hostname;
- uint8_t key[16];
- uint32_t assigned;
- uint32_t iaid;
- uint8_t mac[6];
- uint8_t length; // length == 128 -> IA_NA, length <= 64 -> IA_PD
- bool accept_reconf;
- uint8_t clid_len;
- uint8_t clid_data[];
- };
- #define dhcpv6_for_each_option(start, end, otype, olen, odata)\
- for (uint8_t *_o = (uint8_t*)(start); _o + 4 <= (end) &&\
- ((otype) = _o[0] << 8 | _o[1]) && ((odata) = (void*)&_o[4]) &&\
- ((olen) = _o[2] << 8 | _o[3]) + (odata) <= (end); \
- _o += 4 + (_o[2] << 8 | _o[3]))
- int dhcpv6_init_ia(struct interface *iface, int socket);
- size_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
- const struct sockaddr_in6 *addr, const void *data, const uint8_t *end);
- int dhcpv6_ia_init(int dhcpv6_socket);
- int setup_dhcpv6_ia_interface(struct interface *iface, bool enable);
- void dhcpv6_write_statefile(void);
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