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Sources/odhcpd/src/dhcpv6.h

  1 /**
  2  *   Copyright (C) 2012 Steven Barth <steven@midlink.org>
  3  *
  4  *   This program is free software; you can redistribute it and/or modify
  5  *   it under the terms of the GNU General Public License version 2
  6  *   as published by the Free Software Foundation.
  7  *
  8  *   This program is distributed in the hope that it will be useful,
  9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 11  *   GNU General Public License version 2 for more details.
 12  *
 13  */
 14 #pragma once
 15 
 16 #include "odhcpd.h"
 17 
 18 #define ALL_DHCPV6_RELAYS "ff02::1:2"
 19 
 20 #define ALL_DHCPV6_SERVERS "ff05::1:3"
 21 
 22 #define DHCPV6_CLIENT_PORT 546
 23 #define DHCPV6_SERVER_PORT 547
 24 
 25 #define DHCPV6_MSG_SOLICIT 1
 26 #define DHCPV6_MSG_ADVERTISE 2
 27 #define DHCPV6_MSG_REQUEST 3
 28 #define DHCPV6_MSG_CONFIRM 4
 29 #define DHCPV6_MSG_RENEW 5
 30 #define DHCPV6_MSG_REBIND 6
 31 #define DHCPV6_MSG_REPLY 7
 32 #define DHCPV6_MSG_RELEASE 8
 33 #define DHCPV6_MSG_DECLINE 9
 34 #define DHCPV6_MSG_RECONFIGURE 10
 35 #define DHCPV6_MSG_INFORMATION_REQUEST 11
 36 #define DHCPV6_MSG_RELAY_FORW 12
 37 #define DHCPV6_MSG_RELAY_REPL 13
 38 #define DHCPV6_MSG_DHCPV4_QUERY 20
 39 #define DHCPV6_MSG_DHCPV4_RESPONSE 21
 40 
 41 #define DHCPV6_OPT_CLIENTID 1
 42 #define DHCPV6_OPT_SERVERID 2
 43 #define DHCPV6_OPT_IA_NA 3
 44 #define DHCPV6_OPT_IA_ADDR 5
 45 #define DHCPV6_OPT_ORO 6
 46 #define DHCPV6_OPT_STATUS 13
 47 #define DHCPV6_OPT_RELAY_MSG 9
 48 #define DHCPV6_OPT_AUTH 11
 49 #define DHCPV6_OPT_RAPID_COMMIT 14
 50 #define DHCPV6_OPT_USER_CLASS 15
 51 #define DHCPV6_OPT_INTERFACE_ID 18
 52 #define DHCPV6_OPT_RECONF_MSG 19
 53 #define DHCPV6_OPT_RECONF_ACCEPT 20
 54 #define DHCPV6_OPT_DNS_SERVERS 23
 55 #define DHCPV6_OPT_DNS_DOMAIN 24
 56 #define DHCPV6_OPT_IA_PD 25
 57 #define DHCPV6_OPT_IA_PREFIX 26
 58 #define DHCPV6_OPT_SNTP_SERVERS 31
 59 #define DHCPV6_OPT_INFO_REFRESH 32
 60 #define DHCPV6_OPT_FQDN 39
 61 #define DHCPV6_OPT_NTP_SERVERS 56
 62 #define DHCPV6_OPT_SOL_MAX_RT 82
 63 #define DHCPV6_OPT_INF_MAX_RT 83
 64 #define DHCPV6_OPT_DHCPV4_MSG 87
 65 #define DHCPV6_OPT_4O6_SERVER 88
 66 
 67 #define DHCPV6_DUID_VENDOR 2
 68 
 69 #define DHCPV6_STATUS_OK 0
 70 #define DHCPV6_STATUS_NOADDRSAVAIL 2
 71 #define DHCPV6_STATUS_NOBINDING 3
 72 #define DHCPV6_STATUS_NOTONLINK 4
 73 #define DHCPV6_STATUS_USEMULTICAST 5
 74 #define DHCPV6_STATUS_NOPREFIXAVAIL 6
 75 
 76 // I just remembered I have an old one lying around...
 77 #define DHCPV6_ENT_NO  30462
 78 #define DHCPV6_ENT_TYPE 1
 79 
 80 
 81 #define DHCPV6_HOP_COUNT_LIMIT 32
 82 
 83 #define DHCPV6_REC_TIMEOUT      2000 /* msec */
 84 #define DHCPV6_REC_MAX_RC       8
 85 
 86 struct dhcpv6_client_header {
 87         uint8_t msg_type;
 88         uint8_t transaction_id[3];
 89 } __attribute__((packed));
 90 
 91 struct dhcpv6_relay_header {
 92         uint8_t msg_type;
 93         uint8_t hop_count;
 94         struct in6_addr link_address;
 95         struct in6_addr peer_address;
 96         uint8_t options[];
 97 } __attribute__((packed));
 98 
 99 struct dhcpv6_relay_forward_envelope {
100         uint8_t msg_type;
101         uint8_t hop_count;
102         struct in6_addr link_address;
103         struct in6_addr peer_address;
104         uint16_t interface_id_type;
105         uint16_t interface_id_len;
106         uint32_t interface_id_data;
107         uint16_t relay_message_type;
108         uint16_t relay_message_len;
109 } __attribute__((packed));
110 
111 struct dhcpv6_auth_reconfigure {
112         uint16_t type;
113         uint16_t len;
114         uint8_t protocol;
115         uint8_t algorithm;
116         uint8_t rdm;
117         uint32_t replay[2];
118         uint8_t reconf_type;
119         uint8_t key[16];
120 } _packed;
121 
122 struct dhcpv6_ia_hdr {
123         uint16_t type;
124         uint16_t len;
125         uint32_t iaid;
126         uint32_t t1;
127         uint32_t t2;
128 } _packed;
129 
130 struct dhcpv6_ia_prefix {
131         uint16_t type;
132         uint16_t len;
133         uint32_t preferred_lt;
134         uint32_t valid_lt;
135         uint8_t prefix;
136         struct in6_addr addr;
137 } _packed;
138 
139 struct dhcpv6_ia_addr {
140         uint16_t type;
141         uint16_t len;
142         struct in6_addr addr;
143         uint32_t preferred_lt;
144         uint32_t valid_lt;
145 } _packed;
146 
147 struct dhcpv6_cer_id {
148         uint16_t type;
149         uint16_t len;
150         uint16_t reserved;
151         uint16_t auth_type;
152         uint8_t auth[16];
153         struct in6_addr addr;
154 };
155 
156 #define dhcpv6_for_each_option(start, end, otype, olen, odata)\
157         for (uint8_t *_o = (uint8_t*)(start); _o + 4 <= (end) &&\
158                 ((otype) = _o[0] << 8 | _o[1]) && ((odata) = (void*)&_o[4]) &&\
159                 ((olen) = _o[2] << 8 | _o[3]) + (odata) <= (end); \
160                 _o += 4 + (_o[2] << 8 | _o[3]))
161 

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