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3fb2c570 PF |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright (C) 2014 Tom Gundersen | |
5 | Copyright (C) 2014 Intel Corporation. All rights reserved. | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include <errno.h> | |
22 | ||
23 | #include "util.h" | |
24 | ||
25 | #include "dhcp6-lease-internal.h" | |
26 | ||
27 | int dhcp6_lease_clear_timers(DHCP6IA *ia) { | |
28 | assert_return(ia, -EINVAL); | |
29 | ||
30 | ia->timeout_t1 = sd_event_source_unref(ia->timeout_t1); | |
31 | ia->timeout_t2 = sd_event_source_unref(ia->timeout_t2); | |
32 | ||
33 | return 0; | |
34 | } | |
35 | ||
709d6710 PF |
36 | int dhcp6_lease_ia_rebind_expire(const DHCP6IA *ia, uint32_t *expire) { |
37 | DHCP6Address *addr; | |
38 | uint32_t valid = 0, t; | |
39 | ||
40 | assert_return(ia, -EINVAL); | |
41 | assert_return(expire, -EINVAL); | |
42 | ||
43 | LIST_FOREACH(addresses, addr, ia->addresses) { | |
44 | t = be32toh(addr->lifetime_valid); | |
45 | if (valid < t) | |
46 | valid = t; | |
47 | } | |
48 | ||
49 | t = be32toh(ia->lifetime_t2); | |
50 | if (t > valid) | |
51 | return -EINVAL; | |
52 | ||
53 | *expire = valid - t; | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
3fb2c570 PF |
58 | DHCP6IA *dhcp6_lease_free_ia(DHCP6IA *ia) { |
59 | DHCP6Address *address; | |
60 | ||
61 | if (!ia) | |
62 | return NULL; | |
63 | ||
64 | dhcp6_lease_clear_timers(ia); | |
65 | ||
66 | while (ia->addresses) { | |
67 | address = ia->addresses; | |
68 | ||
69 | LIST_REMOVE(addresses, ia->addresses, address); | |
70 | ||
71 | free(address); | |
72 | } | |
73 | ||
74 | return NULL; | |
75 | } | |
76 | ||
77 | int dhcp6_lease_set_serverid(sd_dhcp6_lease *lease, const uint8_t *id, | |
78 | size_t len) { | |
79 | assert_return(lease, -EINVAL); | |
80 | assert_return(id, -EINVAL); | |
81 | ||
82 | free(lease->serverid); | |
83 | ||
84 | lease->serverid = memdup(id, len); | |
85 | if (!lease->serverid) | |
86 | return -EINVAL; | |
87 | ||
88 | lease->serverid_len = len; | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
93 | int dhcp6_lease_get_serverid(sd_dhcp6_lease *lease, uint8_t **id, size_t *len) { | |
94 | assert_return(lease, -EINVAL); | |
95 | assert_return(id, -EINVAL); | |
96 | assert_return(len, -EINVAL); | |
97 | ||
98 | *id = lease->serverid; | |
99 | *len = lease->serverid_len; | |
100 | ||
101 | return 0; | |
102 | } | |
103 | ||
104 | int dhcp6_lease_set_preference(sd_dhcp6_lease *lease, uint8_t preference) { | |
105 | assert_return(lease, -EINVAL); | |
106 | ||
107 | lease->preference = preference; | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
112 | int dhcp6_lease_get_preference(sd_dhcp6_lease *lease, uint8_t *preference) { | |
113 | assert_return(lease, -EINVAL); | |
114 | assert_return(preference, -EINVAL); | |
115 | ||
116 | *preference = lease->preference; | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
ed6ee219 PF |
121 | int dhcp6_lease_set_rapid_commit(sd_dhcp6_lease *lease) { |
122 | assert_return(lease, -EINVAL); | |
123 | ||
124 | lease->rapid_commit = true; | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | int dhcp6_lease_get_rapid_commit(sd_dhcp6_lease *lease, bool *rapid_commit) { | |
130 | assert_return(lease, -EINVAL); | |
131 | assert_return(rapid_commit, -EINVAL); | |
132 | ||
133 | *rapid_commit = lease->rapid_commit; | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
3fb2c570 PF |
138 | int dhcp6_lease_get_iaid(sd_dhcp6_lease *lease, be32_t *iaid) { |
139 | assert_return(lease, -EINVAL); | |
140 | assert_return(iaid, -EINVAL); | |
141 | ||
142 | *iaid = lease->ia.id; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
ea3b3a75 PF |
147 | int sd_dhcp6_lease_get_next_address(sd_dhcp6_lease *lease, |
148 | struct in6_addr *addr, | |
149 | uint32_t *lifetime_preferred, | |
150 | uint32_t *lifetime_valid) { | |
151 | assert_return(lease, -EINVAL); | |
152 | assert_return(addr, -EINVAL); | |
153 | assert_return(lifetime_preferred, -EINVAL); | |
154 | assert_return(lifetime_valid, -EINVAL); | |
155 | ||
156 | if (!lease->addr_iter) | |
157 | return -ENOMSG; | |
158 | ||
159 | memcpy(addr, &lease->addr_iter->address, sizeof(struct in6_addr)); | |
160 | *lifetime_preferred = be32toh(lease->addr_iter->lifetime_preferred); | |
161 | *lifetime_valid = be32toh(lease->addr_iter->lifetime_valid); | |
162 | ||
163 | lease->addr_iter = lease->addr_iter->addresses_next; | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | int sd_dhcp6_lease_get_first_address(sd_dhcp6_lease *lease, | |
169 | struct in6_addr *addr, | |
170 | uint32_t *lifetime_preferred, | |
171 | uint32_t *lifetime_valid) { | |
172 | assert_return(lease, -EINVAL); | |
173 | assert_return(addr, -EINVAL); | |
174 | assert_return(lifetime_preferred, -EINVAL); | |
175 | assert_return(lifetime_valid, -EINVAL); | |
176 | ||
177 | if (!lease->ia.addresses) | |
178 | return -ENOMSG; | |
179 | ||
180 | lease->addr_iter = lease->ia.addresses; | |
181 | ||
182 | return sd_dhcp6_lease_get_next_address(lease, addr, lifetime_preferred, | |
183 | lifetime_valid); | |
184 | } | |
185 | ||
3fb2c570 PF |
186 | sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease) { |
187 | if (lease) | |
188 | assert_se(REFCNT_INC(lease->n_ref) >= 2); | |
189 | ||
190 | return lease; | |
191 | } | |
192 | ||
193 | sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease) { | |
194 | if (lease && REFCNT_DEC(lease->n_ref) <= 0) { | |
195 | free(lease->serverid); | |
196 | dhcp6_lease_free_ia(&lease->ia); | |
197 | ||
198 | free(lease); | |
199 | } | |
200 | ||
201 | return NULL; | |
202 | } | |
203 | ||
204 | int dhcp6_lease_new(sd_dhcp6_lease **ret) { | |
205 | sd_dhcp6_lease *lease; | |
206 | ||
207 | lease = new0(sd_dhcp6_lease, 1); | |
208 | if (!lease) | |
209 | return -ENOMEM; | |
210 | ||
211 | lease->n_ref = REFCNT_INIT; | |
212 | ||
213 | LIST_HEAD_INIT(lease->ia.addresses); | |
214 | ||
215 | *ret = lease; | |
216 | return 0; | |
217 | } |