1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2014 Roy Marples <roy@marples.name>
* All rights reserved
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef DHCP6_H
#define DHCP6_H
#include "dhcpcd.h"
#define IN6ADDR_LINKLOCAL_ALLDHCP_INIT \
{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02 }}}
/* UDP port numbers for DHCP */
#define DHCP6_CLIENT_PORT 546
#define DHCP6_SERVER_PORT 547
/* DHCP message type */
#define DHCP6_SOLICIT 1
#define DHCP6_ADVERTISE 2
#define DHCP6_REQUEST 3
#define DHCP6_CONFIRM 4
#define DHCP6_RENEW 5
#define DHCP6_REBIND 6
#define DHCP6_REPLY 7
#define DHCP6_RELEASE 8
#define DHCP6_DECLINE 9
#define DHCP6_RECONFIGURE 10
#define DHCP6_INFORMATION_REQ 11
#define DHCP6_RELAY_FLOW 12
#define DHCP6_RELAY_REPL 13
#define D6_OPTION_CLIENTID 1
#define D6_OPTION_SERVERID 2
#define D6_OPTION_IA_NA 3
#define D6_OPTION_IA_TA 4
#define D6_OPTION_ORO 6
#define D6_OPTION_IA_ADDR 5
#define D6_OPTION_PREFERENCE 7
#define D6_OPTION_ELAPSED 8
#define D6_OPTION_AUTH 11
#define D6_OPTION_UNICAST 12
#define D6_OPTION_STATUS_CODE 13
#define D6_OPTION_RAPID_COMMIT 14
#define D6_OPTION_VENDOR_CLASS 16
#define D6_OPTION_VENDOR_OPTS 17
#define D6_OPTION_SIP_SERVERS_NAME 21
#define D6_OPTION_SIP_SERVERS_ADDRESS 22
#define D6_OPTION_DNS_SERVERS 23
#define D6_OPTION_DOMAIN_LIST 24
#define D6_OPTION_IA_PD 25
#define D6_OPTION_IAPREFIX 26
#define D6_OPTION_NIS_SERVERS 27
#define D6_OPTION_NISP_SERVERS 28
#define D6_OPTION_NIS_DOMAIN_NAME 29
#define D6_OPTION_NISP_DOMAIN_NAME 30
#define D6_OPTION_SNTP_SERVERS 31
#define D6_OPTION_INFO_REFRESH_TIME 32
#define D6_OPTION_BCMS_SERVER_D 33
#define D6_OPTION_BCMS_SERVER_A 34
#define D6_OPTION_FQDN 39
#define D6_OPTION_POSIX_TIMEZONE 41
#define D6_OPTION_TZDB_TIMEZONE 42
#define D6_FQDN_PTR 0x00
#define D6_FQDN_BOTH 0x01
#define D6_FQDN_NONE 0x04
#include "dhcp.h"
#include "ipv6.h"
struct dhcp6_message {
uint8_t type;
uint8_t xid[3];
/* followed by options */
} __packed;
struct dhcp6_option {
uint16_t code;
uint16_t len;
/* followed by data */
} __packed;
#define D6_STATUS_OK 0
#define D6_STATUS_FAIL 1
#define D6_STATUS_NOADDR 2
#define D6_STATUS_NOBINDING 3
#define D6_STATUS_NOTONLINK 4
#define D6_STATUS_USEMULTICAST 5
#define SOL_MAX_DELAY 1
#define SOL_TIMEOUT 1
#define SOL_MAX_RT 120
#define REQ_TIMEOUT 1
#define REQ_MAX_RT 30
#define REQ_MAX_RC 10
#define CNF_MAX_DELAY 1
#define CNF_TIMEOUT 1
#define CNF_MAX_RT 4
#define CNF_MAX_RD 10
#define REN_TIMEOUT 10
#define REN_MAX_RT 600
#define REB_TIMEOUT 10
#define REB_MAX_RT 600
#define INF_MAX_DELAY 1
#define INF_TIMEOUT 1
#define INF_MAX_RT 120
#define REL_TIMEOUT 1
#define REL_MAX_RC 5
#define DEC_TIMEOUT 1
#define DEC_MAX_RC 5
#define REC_TIMEOUT 2
#define REC_MAX_RC 8
#define HOP_COUNT_LIMIT 32
/* RFC4242 3.1 */
#define IRT_DEFAULT 86400
#define IRT_MINIMUM 600
#define DHCP6_RAND_MIN -100
#define DHCP6_RAND_MAX 100
enum DH6S {
DH6S_INIT,
DH6S_DISCOVER,
DH6S_REQUEST,
DH6S_BOUND,
DH6S_RENEW,
DH6S_REBIND,
DH6S_CONFIRM,
DH6S_INFORM,
DH6S_INFORMED,
DH6S_RENEW_REQUESTED,
DH6S_PROBE,
DH6S_DELEGATED,
DH6S_RELEASE
};
struct dhcp6_state {
enum DH6S state;
time_t start_uptime;
/* Message retransmission timings */
struct timeval RT;
int IMD;
int RTC;
int IRT;
int MRC;
int MRT;
void (*MRCcallback)(void *);
struct dhcp6_message *send;
size_t send_len;
struct dhcp6_message *recv;
size_t recv_len;
struct dhcp6_message *new;
size_t new_len;
struct dhcp6_message *old;
size_t old_len;
uint32_t renew;
uint32_t rebind;
uint32_t expire;
struct in6_addr unicast;
struct ipv6_addrhead addrs;
uint32_t lowpl;
uint32_t sla;
uint8_t sla_set;
char leasefile[PATH_MAX];
const char *reason;
struct authstate auth;
};
#define D6_STATE(ifp) \
((struct dhcp6_state *)(ifp)->if_data[IF_DATA_DHCP6])
#define D6_CSTATE(ifp) \
((const struct dhcp6_state *)(ifp)->if_data[IF_DATA_DHCP6])
#define D6_STATE_RUNNING(ifp) (D6_STATE((ifp)) && D6_STATE((ifp))->new)
#define D6_FIRST_OPTION(m) \
((struct dhcp6_option *) \
((uint8_t *)(m) + sizeof(struct dhcp6_message)))
#define D6_NEXT_OPTION(o) \
((struct dhcp6_option *) \
(((uint8_t *)o) + sizeof(struct dhcp6_option) + ntohs((o)->len)))
#define D6_OPTION_DATA(o) \
((uint8_t *)(o) + sizeof(struct dhcp6_option))
#define D6_CFIRST_OPTION(m) \
((const struct dhcp6_option *) \
((const uint8_t *)(m) + sizeof(struct dhcp6_message)))
#define D6_CNEXT_OPTION(o) \
((const struct dhcp6_option *) \
(((const uint8_t *)o) + sizeof(struct dhcp6_option) + ntohs((o)->len)))
#define D6_COPTION_DATA(o) \
((const uint8_t *)(o) + sizeof(struct dhcp6_option))
#ifdef INET6
extern struct dhcp_opt *dhcp6_opts;
extern size_t dhcp6_opts_len;
void dhcp6_printoptions(void);
int dhcp6_addrexists(const struct ipv6_addr *);
int dhcp6_find_delegates(struct interface *);
int dhcp6_start(struct interface *, enum DH6S);
void dhcp6_reboot(struct interface *);
ssize_t dhcp6_env(char **, const char *, const struct interface *,
const struct dhcp6_message *, ssize_t);
void dhcp6_free(struct interface *);
void dhcp6_handleifa(int, const char *, const struct in6_addr *addr, int);
void dhcp6_drop(struct interface *, const char *);
#else
#define dhcp6_printoptions()
#define dhcp6_addrexists(a) 0
#define dhcp6_find_delegates(a) 0
#define dhcp6_start(a, b) 0
#define dhcp6_reboot(a)
#define dhcp6_env(a, b, c, d, e)
#define dhcp6_free(a)
#define dhcp6_drop(a, b)
#endif
#endif
|
