Bug Summary

File:build-scan/../src/libsystemd-network/sd-dhcp6-lease.c
Warning:line 56, column 17
Use of memory after it is freed

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name sd-dhcp6-lease.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -menable-no-infs -menable-no-nans -menable-unsafe-fp-math -fno-signed-zeros -mreassociate -freciprocal-math -fdenormal-fp-math=preserve-sign,preserve-sign -ffp-contract=fast -fno-rounding-math -ffast-math -ffinite-math-only -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/12.0.0 -include config.h -I src/libsystemd-network/libsystemd-network.a.p -I src/libsystemd-network -I ../src/libsystemd-network -I src/basic -I ../src/basic -I src/shared -I ../src/shared -I src/systemd -I ../src/systemd -I src/journal -I ../src/journal -I src/journal-remote -I ../src/journal-remote -I src/nspawn -I ../src/nspawn -I src/resolve -I ../src/resolve -I src/timesync -I ../src/timesync -I ../src/time-wait-sync -I src/login -I ../src/login -I src/udev -I ../src/udev -I src/libudev -I ../src/libudev -I src/core -I ../src/core -I ../src/libsystemd/sd-bus -I ../src/libsystemd/sd-device -I ../src/libsystemd/sd-hwdb -I ../src/libsystemd/sd-id128 -I ../src/libsystemd/sd-netlink -I ../src/libsystemd/sd-network -I . -I .. -D _FILE_OFFSET_BITS=64 -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/12.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wwrite-strings -Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result -Wno-format-signedness -Wno-error=nonnull -std=gnu99 -fconst-strings -fdebug-compilation-dir /home/mrc0mmand/repos/@redhat-plumbers/systemd-rhel8/build-scan -ferror-limit 19 -fvisibility hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -analyzer-output=html -faddrsig -o /tmp/scan-build-2021-07-16-221226-1465241-1 -x c ../src/libsystemd-network/sd-dhcp6-lease.c
1/* SPDX-License-Identifier: LGPL-2.1+ */
2/***
3 Copyright © 2014-2015 Intel Corporation. All rights reserved.
4***/
5
6#include <errno(*__errno_location ()).h>
7
8#include "alloc-util.h"
9#include "dhcp6-lease-internal.h"
10#include "dhcp6-protocol.h"
11#include "strv.h"
12#include "util.h"
13
14int dhcp6_lease_clear_timers(DHCP6IA *ia) {
15 assert_return(ia, -EINVAL)do { if (!(((__builtin_expect(!!(ia),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("ia"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 15, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
16
17 ia->timeout_t1 = sd_event_source_unref(ia->timeout_t1);
18 ia->timeout_t2 = sd_event_source_unref(ia->timeout_t2);
19
20 return 0;
21}
22
23int dhcp6_lease_ia_rebind_expire(const DHCP6IA *ia, uint32_t *expire) {
24 DHCP6Address *addr;
25 uint32_t valid = 0, t;
26
27 assert_return(ia, -EINVAL)do { if (!(((__builtin_expect(!!(ia),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("ia"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 27, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
28 assert_return(expire, -EINVAL)do { if (!(((__builtin_expect(!!(expire),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("expire"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 28, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
29
30 LIST_FOREACH(addresses, addr, ia->addresses)for ((addr) = (ia->addresses); (addr); (addr) = (addr)->
addresses_next) {
31 t = be32toh(addr->iaaddr.lifetime_valid);
32 if (valid < t)
33 valid = t;
34 }
35
36 t = be32toh(ia->ia_na.lifetime_t2);
37 if (t > valid)
38 return -EINVAL22;
39
40 *expire = valid - t;
41
42 return 0;
43}
44
45DHCP6IA *dhcp6_lease_free_ia(DHCP6IA *ia) {
46 DHCP6Address *address;
47
48 if (!ia
8.1
'ia' is non-null
)
9
←
Taking false branch
→
49 return NULL((void*)0);
50
51 dhcp6_lease_clear_timers(ia);
52
53 while (ia->addresses) {
10
←
Loop condition is true. Entering loop body
→
19
←
Loop condition is true. Entering loop body
→
54 address = ia->addresses;
55
56 LIST_REMOVE(addresses, ia->addresses, address)do { typeof(*(ia->addresses)) **_head = &(ia->addresses
), *_item = (address); do { if ((__builtin_expect(!!(!(_item)
),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("_item"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 56, __PRETTY_FUNCTION__); } while (0); if (_item->addresses_next
) _item->addresses_next->addresses_prev = _item->addresses_prev
; if (_item->addresses_prev) _item->addresses_prev->
addresses_next = _item->addresses_next; else { do { if ((__builtin_expect
(!!(!(*_head == _item)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD
, ("*_head == _item"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 56, __PRETTY_FUNCTION__); } while (0); *_head = _item->addresses_next
; } _item->addresses_next = _item->addresses_prev = ((void
*)0); } while (0);
11
←
Taking false branch
→
12
←
Loop condition is false. Exiting loop
→
13
←
Assuming field 'addresses_next' is null
→
14
←
Taking false branch
→
15
←
Assuming field 'addresses_prev' is non-null
→
16
←
Taking true branch
→
17
←
Loop condition is false. Exiting loop
→
20
←
Taking false branch
→
21
←
Loop condition is false. Exiting loop
→
22
←
Use of memory after it is freed
57
58 free(address);
18
←
Memory is released
→
59 }
60
61 return NULL((void*)0);
62}
63
64int dhcp6_lease_set_serverid(sd_dhcp6_lease *lease, const uint8_t *id,
65 size_t len) {
66 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 66, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
67 assert_return(id, -EINVAL)do { if (!(((__builtin_expect(!!(id),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("id"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 67, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
68
69 free(lease->serverid);
70
71 lease->serverid = memdup(id, len);
72 if (!lease->serverid)
73 return -EINVAL22;
74
75 lease->serverid_len = len;
76
77 return 0;
78}
79
80int dhcp6_lease_get_serverid(sd_dhcp6_lease *lease, uint8_t **id, size_t *len) {
81 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 81, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
82
83 if (!lease->serverid)
84 return -ENOMSG42;
85
86 if (id)
87 *id = lease->serverid;
88 if (len)
89 *len = lease->serverid_len;
90
91 return 0;
92}
93
94int dhcp6_lease_set_preference(sd_dhcp6_lease *lease, uint8_t preference) {
95 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 95, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
96
97 lease->preference = preference;
98
99 return 0;
100}
101
102int dhcp6_lease_get_preference(sd_dhcp6_lease *lease, uint8_t *preference) {
103 assert_return(preference, -EINVAL)do { if (!(((__builtin_expect(!!(preference),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("preference"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 103, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
104
105 if (!lease)
106 return -EINVAL22;
107
108 *preference = lease->preference;
109
110 return 0;
111}
112
113int dhcp6_lease_set_rapid_commit(sd_dhcp6_lease *lease) {
114 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 114, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
115
116 lease->rapid_commit = true1;
117
118 return 0;
119}
120
121int dhcp6_lease_get_rapid_commit(sd_dhcp6_lease *lease, bool_Bool *rapid_commit) {
122 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 122, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
123 assert_return(rapid_commit, -EINVAL)do { if (!(((__builtin_expect(!!(rapid_commit),1))) ? (1) : (
log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("rapid_commit"
), "../src/libsystemd-network/sd-dhcp6-lease.c", 123, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
124
125 *rapid_commit = lease->rapid_commit;
126
127 return 0;
128}
129
130int dhcp6_lease_get_iaid(sd_dhcp6_lease *lease, be32_t *iaid) {
131 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 131, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
132 assert_return(iaid, -EINVAL)do { if (!(((__builtin_expect(!!(iaid),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("iaid"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 132, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
133
134 *iaid = lease->ia.ia_na.id;
135
136 return 0;
137}
138
139int sd_dhcp6_lease_get_address(sd_dhcp6_lease *lease, struct in6_addr *addr,
140 uint32_t *lifetime_preferred,
141 uint32_t *lifetime_valid) {
142 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 142, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
143 assert_return(addr, -EINVAL)do { if (!(((__builtin_expect(!!(addr),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("addr"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 143, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
144 assert_return(lifetime_preferred, -EINVAL)do { if (!(((__builtin_expect(!!(lifetime_preferred),1))) ? (
1) : (log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("lifetime_preferred"
), "../src/libsystemd-network/sd-dhcp6-lease.c", 144, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
145 assert_return(lifetime_valid, -EINVAL)do { if (!(((__builtin_expect(!!(lifetime_valid),1))) ? (1) :
(log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("lifetime_valid"
), "../src/libsystemd-network/sd-dhcp6-lease.c", 145, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
146
147 if (!lease->addr_iter)
148 return -ENOMSG42;
149
150 memcpy(addr, &lease->addr_iter->iaaddr.address,
151 sizeof(struct in6_addr));
152 *lifetime_preferred =
153 be32toh(lease->addr_iter->iaaddr.lifetime_preferred);
154 *lifetime_valid = be32toh(lease->addr_iter->iaaddr.lifetime_valid);
155
156 lease->addr_iter = lease->addr_iter->addresses_next;
157
158 return 0;
159}
160
161void sd_dhcp6_lease_reset_address_iter(sd_dhcp6_lease *lease) {
162 if (lease)
163 lease->addr_iter = lease->ia.addresses;
164}
165
166int sd_dhcp6_lease_get_pd(sd_dhcp6_lease *lease, struct in6_addr *prefix,
167 uint8_t *prefix_len,
168 uint32_t *lifetime_preferred,
169 uint32_t *lifetime_valid) {
170 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 170, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
171 assert_return(prefix, -EINVAL)do { if (!(((__builtin_expect(!!(prefix),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("prefix"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 171, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
172 assert_return(prefix_len, -EINVAL)do { if (!(((__builtin_expect(!!(prefix_len),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("prefix_len"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 172, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
173 assert_return(lifetime_preferred, -EINVAL)do { if (!(((__builtin_expect(!!(lifetime_preferred),1))) ? (
1) : (log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("lifetime_preferred"
), "../src/libsystemd-network/sd-dhcp6-lease.c", 173, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
174 assert_return(lifetime_valid, -EINVAL)do { if (!(((__builtin_expect(!!(lifetime_valid),1))) ? (1) :
(log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("lifetime_valid"
), "../src/libsystemd-network/sd-dhcp6-lease.c", 174, __PRETTY_FUNCTION__
), 0))) return (-22); } while (0);
175
176 if (!lease->prefix_iter)
177 return -ENOMSG42;
178
179 memcpy(prefix, &lease->prefix_iter->iapdprefix.address,
180 sizeof(struct in6_addr));
181 *prefix_len = lease->prefix_iter->iapdprefix.prefixlen;
182 *lifetime_preferred =
183 be32toh(lease->prefix_iter->iapdprefix.lifetime_preferred);
184 *lifetime_valid =
185 be32toh(lease->prefix_iter->iapdprefix.lifetime_valid);
186
187 lease->prefix_iter = lease->prefix_iter->addresses_next;
188
189 return 0;
190}
191
192void sd_dhcp6_lease_reset_pd_prefix_iter(sd_dhcp6_lease *lease) {
193 if (lease)
194 lease->prefix_iter = lease->pd.addresses;
195}
196
197int dhcp6_lease_set_dns(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) {
198 int r;
199
200 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 200, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
201 assert_return(optval, -EINVAL)do { if (!(((__builtin_expect(!!(optval),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("optval"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 201, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
202
203 if (!optlen)
204 return 0;
205
206 r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->dns,
207 lease->dns_count,
208 &lease->dns_allocated);
209 if (r < 0) {
210 log_dhcp6_client(client, "Invalid DNS server option: %s",log_internal_realm(((LOG_REALM_SYSTEMD) << 10 | ((7))),
0, "../src/libsystemd-network/sd-dhcp6-lease.c", 211, __func__
, "DHCPv6 CLIENT: " "Invalid DNS server option: %s", strerror
(-r))
211 strerror(-r))log_internal_realm(((LOG_REALM_SYSTEMD) << 10 | ((7))),
0, "../src/libsystemd-network/sd-dhcp6-lease.c", 211, __func__
, "DHCPv6 CLIENT: " "Invalid DNS server option: %s", strerror
(-r));
212
213 return r;
214 }
215
216 lease->dns_count = r;
217
218 return 0;
219}
220
221int sd_dhcp6_lease_get_dns(sd_dhcp6_lease *lease, struct in6_addr **addrs) {
222 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 222, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
223 assert_return(addrs, -EINVAL)do { if (!(((__builtin_expect(!!(addrs),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("addrs"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 223, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
224
225 if (lease->dns_count) {
226 *addrs = lease->dns;
227 return lease->dns_count;
228 }
229
230 return -ENOENT2;
231}
232
233int dhcp6_lease_set_domains(sd_dhcp6_lease *lease, uint8_t *optval,
234 size_t optlen) {
235 int r;
236 char **domains;
237
238 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 238, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
239 assert_return(optval, -EINVAL)do { if (!(((__builtin_expect(!!(optval),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("optval"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 239, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
240
241 if (!optlen)
242 return 0;
243
244 r = dhcp6_option_parse_domainname(optval, optlen, &domains);
245 if (r < 0)
246 return 0;
247
248 strv_free_and_replace(lease->domains, domains)({ strv_free(lease->domains); (lease->domains) = (domains
); (domains) = ((void*)0); 0; });
249 lease->domains_count = r;
250
251 return r;
252}
253
254int sd_dhcp6_lease_get_domains(sd_dhcp6_lease *lease, char ***domains) {
255 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 255, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
256 assert_return(domains, -EINVAL)do { if (!(((__builtin_expect(!!(domains),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("domains"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 256, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
257
258 if (lease->domains_count) {
259 *domains = lease->domains;
260 return lease->domains_count;
261 }
262
263 return -ENOENT2;
264}
265
266int dhcp6_lease_set_ntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) {
267 int r;
268 uint16_t subopt;
269 size_t sublen;
270 uint8_t *subval;
271
272 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 272, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
273 assert_return(optval, -EINVAL)do { if (!(((__builtin_expect(!!(optval),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("optval"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 273, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
274
275 lease->ntp = mfree(lease->ntp);
276 lease->ntp_count = 0;
277 lease->ntp_allocated = 0;
278
279 while ((r = dhcp6_option_parse(&optval, &optlen, &subopt, &sublen,
280 &subval)) >= 0) {
281 int s;
282 char **servers;
283
284 switch(subopt) {
285 case DHCP6_NTP_SUBOPTION_SRV_ADDR:
286 case DHCP6_NTP_SUBOPTION_MC_ADDR:
287 if (sublen != 16)
288 return 0;
289
290 s = dhcp6_option_parse_ip6addrs(subval, sublen,
291 &lease->ntp,
292 lease->ntp_count,
293 &lease->ntp_allocated);
294 if (s < 0)
295 return s;
296
297 lease->ntp_count = s;
298
299 break;
300
301 case DHCP6_NTP_SUBOPTION_SRV_FQDN:
302 r = dhcp6_option_parse_domainname(subval, sublen,
303 &servers);
304 if (r < 0)
305 return 0;
306
307 strv_free_and_replace(lease->ntp_fqdn, servers)({ strv_free(lease->ntp_fqdn); (lease->ntp_fqdn) = (servers
); (servers) = ((void*)0); 0; });
308 lease->ntp_fqdn_count = r;
309
310 break;
311 }
312 }
313
314 if (r != -ENOMSG42)
315 return r;
316
317 return 0;
318}
319
320int dhcp6_lease_set_sntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) {
321 int r;
322
323 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 323, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
324 assert_return(optval, -EINVAL)do { if (!(((__builtin_expect(!!(optval),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("optval"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 324, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
325
326 if (!optlen)
327 return 0;
328
329 if (lease->ntp || lease->ntp_fqdn) {
330 log_dhcp6_client(client, "NTP information already provided")log_internal_realm(((LOG_REALM_SYSTEMD) << 10 | ((7))),
0, "../src/libsystemd-network/sd-dhcp6-lease.c", 330, __func__
, "DHCPv6 CLIENT: " "NTP information already provided");
331
332 return 0;
333 }
334
335 log_dhcp6_client(client, "Using deprecated SNTP information")log_internal_realm(((LOG_REALM_SYSTEMD) << 10 | ((7))),
0, "../src/libsystemd-network/sd-dhcp6-lease.c", 335, __func__
, "DHCPv6 CLIENT: " "Using deprecated SNTP information");
336
337 r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->ntp,
338 lease->ntp_count,
339 &lease->ntp_allocated);
340 if (r < 0) {
341 log_dhcp6_client(client, "Invalid SNTP server option: %s",log_internal_realm(((LOG_REALM_SYSTEMD) << 10 | ((7))),
0, "../src/libsystemd-network/sd-dhcp6-lease.c", 342, __func__
, "DHCPv6 CLIENT: " "Invalid SNTP server option: %s", strerror
(-r))
342 strerror(-r))log_internal_realm(((LOG_REALM_SYSTEMD) << 10 | ((7))),
0, "../src/libsystemd-network/sd-dhcp6-lease.c", 342, __func__
, "DHCPv6 CLIENT: " "Invalid SNTP server option: %s", strerror
(-r));
343
344 return r;
345 }
346
347 lease->ntp_count = r;
348
349 return 0;
350}
351
352int sd_dhcp6_lease_get_ntp_addrs(sd_dhcp6_lease *lease,
353 struct in6_addr **addrs) {
354 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 354, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
355 assert_return(addrs, -EINVAL)do { if (!(((__builtin_expect(!!(addrs),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("addrs"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 355, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
356
357 if (lease->ntp_count) {
358 *addrs = lease->ntp;
359 return lease->ntp_count;
360 }
361
362 return -ENOENT2;
363}
364
365int sd_dhcp6_lease_get_ntp_fqdn(sd_dhcp6_lease *lease, char ***ntp_fqdn) {
366 assert_return(lease, -EINVAL)do { if (!(((__builtin_expect(!!(lease),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("lease"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 366, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
367 assert_return(ntp_fqdn, -EINVAL)do { if (!(((__builtin_expect(!!(ntp_fqdn),1))) ? (1) : (log_assert_failed_return_realm
(LOG_REALM_SYSTEMD, ("ntp_fqdn"), "../src/libsystemd-network/sd-dhcp6-lease.c"
, 367, __PRETTY_FUNCTION__), 0))) return (-22); } while (0);
368
369 if (lease->ntp_fqdn_count) {
370 *ntp_fqdn = lease->ntp_fqdn;
371 return lease->ntp_fqdn_count;
372 }
373
374 return -ENOENT2;
375}
376
377sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease) {
378
379 if (!lease)
380 return NULL((void*)0);
381
382 assert(lease->n_ref >= 1)do { if ((__builtin_expect(!!(!(lease->n_ref >= 1)),0))
) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("lease->n_ref >= 1"
), "../src/libsystemd-network/sd-dhcp6-lease.c", 382, __PRETTY_FUNCTION__
); } while (0);
383 lease->n_ref++;
384
385 return lease;
386}
387
388sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease) {
389
390 if (!lease)
1
Assuming 'lease' is non-null
→
2
←
Taking false branch
→
391 return NULL((void*)0);
392
393 assert(lease->n_ref >= 1)do { if ((__builtin_expect(!!(!(lease->n_ref >= 1)),0))
) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("lease->n_ref >= 1"
), "../src/libsystemd-network/sd-dhcp6-lease.c", 393, __PRETTY_FUNCTION__
); } while (0);
3
←
Assuming field 'n_ref' is >= 1
→
4
←
Taking false branch
→
5
←
Loop condition is false. Exiting loop
→
394 lease->n_ref--;
395
396 if (lease->n_ref > 0)
6
←
Assuming field 'n_ref' is <= 0
→
7
←
Taking false branch
→
397 return NULL((void*)0);
398
399 free(lease->serverid);
400 dhcp6_lease_free_ia(&lease->ia);
8
←
Calling 'dhcp6_lease_free_ia'
→
401 dhcp6_lease_free_ia(&lease->pd);
402
403 free(lease->dns);
404
405 lease->domains = strv_free(lease->domains);
406
407 free(lease->ntp);
408
409 lease->ntp_fqdn = strv_free(lease->ntp_fqdn);
410 return mfree(lease);
411}
412
413int dhcp6_lease_new(sd_dhcp6_lease **ret) {
414 sd_dhcp6_lease *lease;
415
416 lease = new0(sd_dhcp6_lease, 1)((sd_dhcp6_lease*) calloc((1), sizeof(sd_dhcp6_lease)));
417 if (!lease)
418 return -ENOMEM12;
419
420 lease->n_ref = 1;
421
422 LIST_HEAD_INIT(lease->ia.addresses)do { (lease->ia.addresses) = ((void*)0); } while (0);
423
424 *ret = lease;
425 return 0;
426}