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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
5fde13d7 | 2 | |
f5284182 | 3 | #include <arpa/inet.h> |
07630cea LP |
4 | #include <linux/if.h> |
5 | #include <netinet/ether.h> | |
5fde13d7 | 6 | |
dccca82b | 7 | #include "sd-id128.h" |
07630cea LP |
8 | #include "sd-ndisc.h" |
9 | ||
b5efdb8a | 10 | #include "alloc-util.h" |
07630cea LP |
11 | #include "condition.h" |
12 | #include "conf-parser.h" | |
e1ea665e | 13 | #include "dhcp-lease-internal.h" |
aa31ce18 | 14 | #include "ether-addr-util.h" |
cf0fbc49 | 15 | #include "hexdecoct.h" |
be32eb9b | 16 | #include "log.h" |
6bedfcbb LP |
17 | #include "network-internal.h" |
18 | #include "parse-util.h" | |
07630cea | 19 | #include "siphash24.h" |
d31645ad | 20 | #include "socket-util.h" |
07630cea LP |
21 | #include "string-util.h" |
22 | #include "strv.h" | |
5fde13d7 | 23 | #include "utf8.h" |
a12fa420 | 24 | #include "util.h" |
5fde13d7 | 25 | |
51517f9e | 26 | const char *net_get_name(sd_device *device) { |
44e7b949 | 27 | const char *name, *field; |
fc541430 TG |
28 | |
29 | assert(device); | |
b5db00e5 UTL |
30 | |
31 | /* fetch some persistent data unique (on this machine) to this device */ | |
51517f9e YW |
32 | FOREACH_STRING(field, "ID_NET_NAME_ONBOARD", "ID_NET_NAME_SLOT", "ID_NET_NAME_PATH", "ID_NET_NAME_MAC") |
33 | if (sd_device_get_property_value(device, field, &name) >= 0) | |
44e7b949 | 34 | return name; |
b5db00e5 | 35 | |
44e7b949 | 36 | return NULL; |
fc541430 TG |
37 | } |
38 | ||
39 | #define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a) | |
40 | ||
51517f9e | 41 | int net_get_unique_predictable_data(sd_device *device, uint64_t *result) { |
fc541430 TG |
42 | size_t l, sz = 0; |
43 | const char *name = NULL; | |
44 | int r; | |
45 | uint8_t *v; | |
46 | ||
47 | assert(device); | |
48 | ||
49 | name = net_get_name(device); | |
b5db00e5 UTL |
50 | if (!name) |
51 | return -ENOENT; | |
52 | ||
53 | l = strlen(name); | |
54 | sz = sizeof(sd_id128_t) + l; | |
6e9417f5 | 55 | v = newa(uint8_t, sz); |
b5db00e5 UTL |
56 | |
57 | /* fetch some persistent data unique to this machine */ | |
58 | r = sd_id128_get_machine((sd_id128_t*) v); | |
59 | if (r < 0) | |
60 | return r; | |
61 | memcpy(v + sizeof(sd_id128_t), name, l); | |
62 | ||
63 | /* Let's hash the machine ID plus the device name. We | |
64 | * use a fixed, but originally randomly created hash | |
65 | * key here. */ | |
933f9cae | 66 | *result = htole64(siphash24(v, sz, HASH_KEY.bytes)); |
b5db00e5 UTL |
67 | |
68 | return 0; | |
69 | } | |
70 | ||
1aa68db1 DM |
71 | static bool net_condition_test_strv(char * const *raw_patterns, |
72 | const char *string) { | |
618b196e DM |
73 | if (strv_isempty(raw_patterns)) |
74 | return true; | |
75 | ||
76 | /* If the patterns begin with "!", edit it out and negate the test. */ | |
77 | if (raw_patterns[0][0] == '!') { | |
78 | char **patterns; | |
da6053d0 | 79 | size_t i, length; |
618b196e DM |
80 | |
81 | length = strv_length(raw_patterns) + 1; /* Include the NULL. */ | |
82 | patterns = newa(char*, length); | |
83 | patterns[0] = raw_patterns[0] + 1; /* Skip the "!". */ | |
84 | for (i = 1; i < length; i++) | |
85 | patterns[i] = raw_patterns[i]; | |
86 | ||
87 | return !string || !strv_fnmatch(patterns, string, 0); | |
88 | } | |
89 | ||
90 | return string && strv_fnmatch(raw_patterns, string, 0); | |
91 | } | |
92 | ||
e90d0374 | 93 | bool net_match_config(Set *match_mac, |
5256e00e TG |
94 | char * const *match_paths, |
95 | char * const *match_drivers, | |
96 | char * const *match_types, | |
97 | char * const *match_names, | |
2cc412b5 TG |
98 | Condition *match_host, |
99 | Condition *match_virt, | |
5022f08a LP |
100 | Condition *match_kernel_cmdline, |
101 | Condition *match_kernel_version, | |
edbb03e9 | 102 | Condition *match_arch, |
505f8da7 | 103 | const struct ether_addr *dev_mac, |
b3e01314 | 104 | const char *dev_path, |
bf175aaf | 105 | const char *dev_parent_driver, |
b3e01314 TG |
106 | const char *dev_driver, |
107 | const char *dev_type, | |
32bc8adc | 108 | const char *dev_name) { |
be32eb9b | 109 | |
2cb62395 | 110 | if (match_host && condition_test(match_host) <= 0) |
7eb08da4 | 111 | return false; |
2cc412b5 | 112 | |
2cb62395 | 113 | if (match_virt && condition_test(match_virt) <= 0) |
7eb08da4 | 114 | return false; |
2cc412b5 | 115 | |
5022f08a LP |
116 | if (match_kernel_cmdline && condition_test(match_kernel_cmdline) <= 0) |
117 | return false; | |
118 | ||
119 | if (match_kernel_version && condition_test(match_kernel_version) <= 0) | |
7eb08da4 | 120 | return false; |
2cc412b5 | 121 | |
2cb62395 | 122 | if (match_arch && condition_test(match_arch) <= 0) |
7eb08da4 | 123 | return false; |
edbb03e9 | 124 | |
25ea58d3 | 125 | if (match_mac && (!dev_mac || !set_contains(match_mac, dev_mac))) |
7eb08da4 | 126 | return false; |
be32eb9b | 127 | |
618b196e | 128 | if (!net_condition_test_strv(match_paths, dev_path)) |
ee5de57b | 129 | return false; |
5256e00e | 130 | |
618b196e | 131 | if (!net_condition_test_strv(match_drivers, dev_driver)) |
ee5de57b | 132 | return false; |
5256e00e | 133 | |
618b196e | 134 | if (!net_condition_test_strv(match_types, dev_type)) |
ee5de57b | 135 | return false; |
5256e00e | 136 | |
618b196e | 137 | if (!net_condition_test_strv(match_names, dev_name)) |
ee5de57b | 138 | return false; |
5256e00e | 139 | |
7eb08da4 | 140 | return true; |
be32eb9b | 141 | } |
5fde13d7 | 142 | |
2cc412b5 TG |
143 | int config_parse_net_condition(const char *unit, |
144 | const char *filename, | |
145 | unsigned line, | |
146 | const char *section, | |
147 | unsigned section_line, | |
148 | const char *lvalue, | |
149 | int ltype, | |
150 | const char *rvalue, | |
151 | void *data, | |
152 | void *userdata) { | |
153 | ||
154 | ConditionType cond = ltype; | |
155 | Condition **ret = data; | |
156 | bool negate; | |
157 | Condition *c; | |
158 | _cleanup_free_ char *s = NULL; | |
159 | ||
160 | assert(filename); | |
161 | assert(lvalue); | |
162 | assert(rvalue); | |
163 | assert(data); | |
164 | ||
165 | negate = rvalue[0] == '!'; | |
166 | if (negate) | |
167 | rvalue++; | |
168 | ||
169 | s = strdup(rvalue); | |
170 | if (!s) | |
171 | return log_oom(); | |
172 | ||
173 | c = condition_new(cond, s, false, negate); | |
174 | if (!c) | |
175 | return log_oom(); | |
176 | ||
177 | if (*ret) | |
178 | condition_free(*ret); | |
179 | ||
180 | *ret = c; | |
181 | return 0; | |
182 | } | |
183 | ||
d31645ad LP |
184 | int config_parse_ifnames( |
185 | const char *unit, | |
186 | const char *filename, | |
187 | unsigned line, | |
188 | const char *section, | |
189 | unsigned section_line, | |
190 | const char *lvalue, | |
191 | int ltype, | |
192 | const char *rvalue, | |
193 | void *data, | |
194 | void *userdata) { | |
5256e00e TG |
195 | |
196 | char ***sv = data; | |
5256e00e TG |
197 | int r; |
198 | ||
199 | assert(filename); | |
200 | assert(lvalue); | |
201 | assert(rvalue); | |
202 | assert(data); | |
203 | ||
93e28226 SS |
204 | for (;;) { |
205 | _cleanup_free_ char *word = NULL; | |
5256e00e | 206 | |
93e28226 | 207 | r = extract_first_word(&rvalue, &word, NULL, 0); |
a9dd908d LP |
208 | if (r < 0) { |
209 | log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse interface name list: %s", rvalue); | |
210 | return 0; | |
211 | } | |
93e28226 SS |
212 | if (r == 0) |
213 | break; | |
5256e00e | 214 | |
d31645ad LP |
215 | if (!ifname_valid(word)) { |
216 | log_syntax(unit, LOG_ERR, filename, line, 0, "Interface name is not valid or too long, ignoring assignment: %s", rvalue); | |
5256e00e TG |
217 | return 0; |
218 | } | |
219 | ||
93e28226 | 220 | r = strv_push(sv, word); |
5256e00e TG |
221 | if (r < 0) |
222 | return log_oom(); | |
93e28226 SS |
223 | |
224 | word = NULL; | |
5256e00e TG |
225 | } |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
d2df0d0e TG |
230 | int config_parse_ifalias(const char *unit, |
231 | const char *filename, | |
232 | unsigned line, | |
233 | const char *section, | |
71a61510 | 234 | unsigned section_line, |
d2df0d0e TG |
235 | const char *lvalue, |
236 | int ltype, | |
237 | const char *rvalue, | |
238 | void *data, | |
239 | void *userdata) { | |
240 | ||
241 | char **s = data; | |
9c39eb5c | 242 | _cleanup_free_ char *n = NULL; |
d2df0d0e TG |
243 | |
244 | assert(filename); | |
245 | assert(lvalue); | |
246 | assert(rvalue); | |
247 | assert(data); | |
248 | ||
249 | n = strdup(rvalue); | |
250 | if (!n) | |
251 | return log_oom(); | |
252 | ||
253 | if (!ascii_is_valid(n) || strlen(n) >= IFALIASZ) { | |
12ca818f | 254 | log_syntax(unit, LOG_ERR, filename, line, 0, "Interface alias is not ASCII clean or is too long, ignoring assignment: %s", rvalue); |
d2df0d0e TG |
255 | return 0; |
256 | } | |
257 | ||
44386b44 YW |
258 | if (isempty(n)) |
259 | *s = mfree(*s); | |
ae2a15bc | 260 | else |
44386b44 | 261 | free_and_replace(*s, n); |
d2df0d0e TG |
262 | |
263 | return 0; | |
264 | } | |
265 | ||
5fde13d7 TG |
266 | int config_parse_hwaddr(const char *unit, |
267 | const char *filename, | |
268 | unsigned line, | |
269 | const char *section, | |
71a61510 | 270 | unsigned section_line, |
5fde13d7 TG |
271 | const char *lvalue, |
272 | int ltype, | |
273 | const char *rvalue, | |
274 | void *data, | |
275 | void *userdata) { | |
e5c1be89 YW |
276 | |
277 | _cleanup_free_ struct ether_addr *n = NULL; | |
5fde13d7 | 278 | struct ether_addr **hwaddr = data; |
5fde13d7 TG |
279 | int r; |
280 | ||
281 | assert(filename); | |
282 | assert(lvalue); | |
283 | assert(rvalue); | |
284 | assert(data); | |
285 | ||
a12fa420 | 286 | n = new0(struct ether_addr, 1); |
5fde13d7 TG |
287 | if (!n) |
288 | return log_oom(); | |
289 | ||
e5c1be89 YW |
290 | r = ether_addr_from_string(rvalue, n); |
291 | if (r < 0) { | |
292 | log_syntax(unit, LOG_ERR, filename, line, r, "Not a valid MAC address, ignoring assignment: %s", rvalue); | |
5fde13d7 TG |
293 | return 0; |
294 | } | |
295 | ||
899f0d25 | 296 | free_and_replace(*hwaddr, n); |
5fde13d7 TG |
297 | |
298 | return 0; | |
299 | } | |
f5284182 | 300 | |
206b63ee YW |
301 | int config_parse_hwaddrs(const char *unit, |
302 | const char *filename, | |
303 | unsigned line, | |
304 | const char *section, | |
305 | unsigned section_line, | |
306 | const char *lvalue, | |
307 | int ltype, | |
308 | const char *rvalue, | |
309 | void *data, | |
310 | void *userdata) { | |
311 | ||
312 | _cleanup_set_free_free_ Set *s = NULL; | |
313 | const char *p = rvalue; | |
314 | Set **hwaddrs = data; | |
315 | int r; | |
316 | ||
317 | assert(filename); | |
318 | assert(lvalue); | |
319 | assert(rvalue); | |
320 | assert(data); | |
321 | ||
322 | if (isempty(rvalue)) { | |
323 | /* Empty assignment resets the list */ | |
e90d0374 | 324 | *hwaddrs = set_free_free(*hwaddrs); |
206b63ee YW |
325 | return 0; |
326 | } | |
327 | ||
328 | s = set_new(ðer_addr_hash_ops); | |
329 | if (!s) | |
330 | return log_oom(); | |
331 | ||
332 | for (;;) { | |
333 | _cleanup_free_ char *word = NULL; | |
334 | _cleanup_free_ struct ether_addr *n = NULL; | |
335 | ||
336 | r = extract_first_word(&p, &word, NULL, 0); | |
337 | if (r == 0) | |
338 | break; | |
339 | if (r == -ENOMEM) | |
340 | return log_oom(); | |
341 | if (r < 0) { | |
342 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
343 | return 0; | |
344 | } | |
345 | ||
e90d0374 | 346 | n = new(struct ether_addr, 1); |
206b63ee YW |
347 | if (!n) |
348 | return log_oom(); | |
349 | ||
350 | r = ether_addr_from_string(word, n); | |
351 | if (r < 0) { | |
352 | log_syntax(unit, LOG_ERR, filename, line, 0, "Not a valid MAC address, ignoring: %s", word); | |
353 | continue; | |
354 | } | |
355 | ||
356 | r = set_put(s, n); | |
357 | if (r < 0) | |
358 | return log_oom(); | |
359 | if (r > 0) | |
360 | n = NULL; /* avoid cleanup */ | |
361 | } | |
362 | ||
363 | r = set_ensure_allocated(hwaddrs, ðer_addr_hash_ops); | |
364 | if (r < 0) | |
365 | return log_oom(); | |
366 | ||
367 | r = set_move(*hwaddrs, s); | |
368 | if (r < 0) | |
369 | return log_oom(); | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
f00ff0de DJL |
374 | int config_parse_bridge_port_priority( |
375 | const char *unit, | |
376 | const char *filename, | |
377 | unsigned line, | |
378 | const char *section, | |
379 | unsigned section_line, | |
380 | const char *lvalue, | |
381 | int ltype, | |
382 | const char *rvalue, | |
383 | void *data, | |
384 | void *userdata) { | |
385 | ||
386 | uint16_t i; | |
387 | int r; | |
388 | ||
389 | assert(filename); | |
390 | assert(lvalue); | |
391 | assert(rvalue); | |
392 | assert(data); | |
393 | ||
394 | r = safe_atou16(rvalue, &i); | |
395 | if (r < 0) { | |
396 | log_syntax(unit, LOG_ERR, filename, line, r, | |
397 | "Failed to parse bridge port priority, ignoring: %s", rvalue); | |
398 | return 0; | |
399 | } | |
400 | ||
401 | if (i > LINK_BRIDGE_PORT_PRIORITY_MAX) { | |
402 | log_syntax(unit, LOG_ERR, filename, line, r, | |
403 | "Bridge port priority is larger than maximum %u, ignoring: %s", LINK_BRIDGE_PORT_PRIORITY_MAX, rvalue); | |
404 | return 0; | |
405 | } | |
406 | ||
407 | *((uint16_t *)data) = i; | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
b0e39c82 | 412 | void serialize_in_addrs(FILE *f, const struct in_addr *addresses, size_t size) { |
09bee74d TG |
413 | unsigned i; |
414 | ||
415 | assert(f); | |
09bee74d TG |
416 | assert(addresses); |
417 | assert(size); | |
418 | ||
09bee74d TG |
419 | for (i = 0; i < size; i++) |
420 | fprintf(f, "%s%s", inet_ntoa(addresses[i]), | |
421 | (i < (size - 1)) ? " ": ""); | |
09bee74d TG |
422 | } |
423 | ||
a2ba62c7 | 424 | int deserialize_in_addrs(struct in_addr **ret, const char *string) { |
09bee74d | 425 | _cleanup_free_ struct in_addr *addresses = NULL; |
a2ba62c7 | 426 | int size = 0; |
09bee74d TG |
427 | |
428 | assert(ret); | |
09bee74d TG |
429 | assert(string); |
430 | ||
93e28226 SS |
431 | for (;;) { |
432 | _cleanup_free_ char *word = NULL; | |
09bee74d TG |
433 | struct in_addr *new_addresses; |
434 | int r; | |
435 | ||
93e28226 SS |
436 | r = extract_first_word(&string, &word, NULL, 0); |
437 | if (r < 0) | |
438 | return r; | |
439 | if (r == 0) | |
440 | break; | |
441 | ||
62d74c78 | 442 | new_addresses = reallocarray(addresses, size + 1, sizeof(struct in_addr)); |
09bee74d TG |
443 | if (!new_addresses) |
444 | return -ENOMEM; | |
445 | else | |
446 | addresses = new_addresses; | |
447 | ||
93e28226 | 448 | r = inet_pton(AF_INET, word, &(addresses[size])); |
09bee74d TG |
449 | if (r <= 0) |
450 | continue; | |
451 | ||
313cefa1 | 452 | size++; |
09bee74d TG |
453 | } |
454 | ||
ae2a15bc | 455 | *ret = TAKE_PTR(addresses); |
09bee74d | 456 | |
a2ba62c7 | 457 | return size; |
09bee74d TG |
458 | } |
459 | ||
1f152e4b | 460 | void serialize_in6_addrs(FILE *f, const struct in6_addr *addresses, size_t size) { |
b729fa14 PF |
461 | unsigned i; |
462 | ||
463 | assert(f); | |
464 | assert(addresses); | |
465 | assert(size); | |
466 | ||
1f152e4b LP |
467 | for (i = 0; i < size; i++) { |
468 | char buffer[INET6_ADDRSTRLEN]; | |
469 | ||
470 | fputs(inet_ntop(AF_INET6, addresses+i, buffer, sizeof(buffer)), f); | |
471 | ||
472 | if (i < size - 1) | |
473 | fputc(' ', f); | |
474 | } | |
b729fa14 PF |
475 | } |
476 | ||
a2ba62c7 | 477 | int deserialize_in6_addrs(struct in6_addr **ret, const char *string) { |
09bee74d | 478 | _cleanup_free_ struct in6_addr *addresses = NULL; |
a2ba62c7 | 479 | int size = 0; |
09bee74d TG |
480 | |
481 | assert(ret); | |
09bee74d TG |
482 | assert(string); |
483 | ||
93e28226 SS |
484 | for (;;) { |
485 | _cleanup_free_ char *word = NULL; | |
09bee74d TG |
486 | struct in6_addr *new_addresses; |
487 | int r; | |
488 | ||
93e28226 SS |
489 | r = extract_first_word(&string, &word, NULL, 0); |
490 | if (r < 0) | |
491 | return r; | |
492 | if (r == 0) | |
493 | break; | |
494 | ||
62d74c78 | 495 | new_addresses = reallocarray(addresses, size + 1, sizeof(struct in6_addr)); |
09bee74d TG |
496 | if (!new_addresses) |
497 | return -ENOMEM; | |
498 | else | |
499 | addresses = new_addresses; | |
500 | ||
93e28226 | 501 | r = inet_pton(AF_INET6, word, &(addresses[size])); |
09bee74d TG |
502 | if (r <= 0) |
503 | continue; | |
504 | ||
505 | size++; | |
506 | } | |
507 | ||
ae2a15bc | 508 | *ret = TAKE_PTR(addresses); |
09bee74d | 509 | |
a2ba62c7 | 510 | return size; |
09bee74d | 511 | } |
e1ea665e | 512 | |
f8693fc7 | 513 | void serialize_dhcp_routes(FILE *f, const char *key, sd_dhcp_route **routes, size_t size) { |
e1ea665e EY |
514 | unsigned i; |
515 | ||
516 | assert(f); | |
517 | assert(key); | |
518 | assert(routes); | |
519 | assert(size); | |
520 | ||
521 | fprintf(f, "%s=", key); | |
522 | ||
fbf7dcb5 | 523 | for (i = 0; i < size; i++) { |
f8693fc7 BG |
524 | struct in_addr dest, gw; |
525 | uint8_t length; | |
526 | ||
527 | assert_se(sd_dhcp_route_get_destination(routes[i], &dest) >= 0); | |
528 | assert_se(sd_dhcp_route_get_gateway(routes[i], &gw) >= 0); | |
529 | assert_se(sd_dhcp_route_get_destination_prefix_length(routes[i], &length) >= 0); | |
530 | ||
531 | fprintf(f, "%s/%" PRIu8, inet_ntoa(dest), length); | |
532 | fprintf(f, ",%s%s", inet_ntoa(gw), (i < (size - 1)) ? " ": ""); | |
fbf7dcb5 | 533 | } |
e1ea665e EY |
534 | |
535 | fputs("\n", f); | |
536 | } | |
537 | ||
538 | int deserialize_dhcp_routes(struct sd_dhcp_route **ret, size_t *ret_size, size_t *ret_allocated, const char *string) { | |
539 | _cleanup_free_ struct sd_dhcp_route *routes = NULL; | |
540 | size_t size = 0, allocated = 0; | |
e1ea665e EY |
541 | |
542 | assert(ret); | |
543 | assert(ret_size); | |
544 | assert(ret_allocated); | |
545 | assert(string); | |
546 | ||
93e28226 SS |
547 | /* WORD FORMAT: dst_ip/dst_prefixlen,gw_ip */ |
548 | for (;;) { | |
549 | _cleanup_free_ char *word = NULL; | |
e1ea665e EY |
550 | char *tok, *tok_end; |
551 | unsigned n; | |
552 | int r; | |
553 | ||
93e28226 SS |
554 | r = extract_first_word(&string, &word, NULL, 0); |
555 | if (r < 0) | |
556 | return r; | |
557 | if (r == 0) | |
558 | break; | |
e1ea665e | 559 | |
93e28226 | 560 | if (!GREEDY_REALLOC(routes, allocated, size + 1)) |
31db0120 | 561 | return -ENOMEM; |
e1ea665e | 562 | |
93e28226 | 563 | tok = word; |
e1ea665e EY |
564 | |
565 | /* get the subnet */ | |
566 | tok_end = strchr(tok, '/'); | |
567 | if (!tok_end) | |
568 | continue; | |
569 | *tok_end = '\0'; | |
570 | ||
571 | r = inet_aton(tok, &routes[size].dst_addr); | |
572 | if (r == 0) | |
573 | continue; | |
574 | ||
575 | tok = tok_end + 1; | |
576 | ||
577 | /* get the prefixlen */ | |
578 | tok_end = strchr(tok, ','); | |
579 | if (!tok_end) | |
580 | continue; | |
581 | ||
582 | *tok_end = '\0'; | |
583 | ||
584 | r = safe_atou(tok, &n); | |
585 | if (r < 0 || n > 32) | |
586 | continue; | |
587 | ||
588 | routes[size].dst_prefixlen = (uint8_t) n; | |
589 | tok = tok_end + 1; | |
590 | ||
591 | /* get the gateway */ | |
592 | r = inet_aton(tok, &routes[size].gw_addr); | |
593 | if (r == 0) | |
594 | continue; | |
595 | ||
596 | size++; | |
597 | } | |
598 | ||
599 | *ret_size = size; | |
600 | *ret_allocated = allocated; | |
ae2a15bc | 601 | *ret = TAKE_PTR(routes); |
e1ea665e EY |
602 | |
603 | return 0; | |
604 | } | |
a073309f | 605 | |
e4735228 | 606 | int serialize_dhcp_option(FILE *f, const char *key, const void *data, size_t size) { |
a073309f AC |
607 | _cleanup_free_ char *hex_buf = NULL; |
608 | ||
609 | assert(f); | |
610 | assert(key); | |
611 | assert(data); | |
612 | ||
613 | hex_buf = hexmem(data, size); | |
614 | if (hex_buf == NULL) | |
615 | return -ENOMEM; | |
616 | ||
617 | fprintf(f, "%s=%s\n", key, hex_buf); | |
618 | ||
619 | return 0; | |
620 | } |