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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
5fde13d7 TG |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright (C) 2013 Tom Gundersen <teg@jklm.no> | |
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 | ||
f5284182 | 21 | #include <arpa/inet.h> |
07630cea LP |
22 | #include <linux/if.h> |
23 | #include <netinet/ether.h> | |
5fde13d7 | 24 | |
07630cea LP |
25 | #include "sd-ndisc.h" |
26 | ||
b5efdb8a | 27 | #include "alloc-util.h" |
07630cea LP |
28 | #include "condition.h" |
29 | #include "conf-parser.h" | |
e1ea665e | 30 | #include "dhcp-lease-internal.h" |
aa31ce18 | 31 | #include "ether-addr-util.h" |
cf0fbc49 | 32 | #include "hexdecoct.h" |
be32eb9b | 33 | #include "log.h" |
6bedfcbb LP |
34 | #include "network-internal.h" |
35 | #include "parse-util.h" | |
07630cea | 36 | #include "siphash24.h" |
d31645ad | 37 | #include "socket-util.h" |
07630cea LP |
38 | #include "string-util.h" |
39 | #include "strv.h" | |
5fde13d7 | 40 | #include "utf8.h" |
a12fa420 | 41 | #include "util.h" |
5fde13d7 | 42 | |
fc541430 | 43 | const char *net_get_name(struct udev_device *device) { |
44e7b949 | 44 | const char *name, *field; |
fc541430 TG |
45 | |
46 | assert(device); | |
b5db00e5 UTL |
47 | |
48 | /* fetch some persistent data unique (on this machine) to this device */ | |
44e7b949 | 49 | FOREACH_STRING(field, "ID_NET_NAME_ONBOARD", "ID_NET_NAME_SLOT", "ID_NET_NAME_PATH", "ID_NET_NAME_MAC") { |
b5db00e5 UTL |
50 | name = udev_device_get_property_value(device, field); |
51 | if (name) | |
44e7b949 | 52 | return name; |
b5db00e5 UTL |
53 | } |
54 | ||
44e7b949 | 55 | return NULL; |
fc541430 TG |
56 | } |
57 | ||
58 | #define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a) | |
59 | ||
dbe81cbd | 60 | int net_get_unique_predictable_data(struct udev_device *device, uint64_t *result) { |
fc541430 TG |
61 | size_t l, sz = 0; |
62 | const char *name = NULL; | |
63 | int r; | |
64 | uint8_t *v; | |
65 | ||
66 | assert(device); | |
67 | ||
68 | name = net_get_name(device); | |
b5db00e5 UTL |
69 | if (!name) |
70 | return -ENOENT; | |
71 | ||
72 | l = strlen(name); | |
73 | sz = sizeof(sd_id128_t) + l; | |
74 | v = alloca(sz); | |
75 | ||
76 | /* fetch some persistent data unique to this machine */ | |
77 | r = sd_id128_get_machine((sd_id128_t*) v); | |
78 | if (r < 0) | |
79 | return r; | |
80 | memcpy(v + sizeof(sd_id128_t), name, l); | |
81 | ||
82 | /* Let's hash the machine ID plus the device name. We | |
83 | * use a fixed, but originally randomly created hash | |
84 | * key here. */ | |
933f9cae | 85 | *result = htole64(siphash24(v, sz, HASH_KEY.bytes)); |
b5db00e5 UTL |
86 | |
87 | return 0; | |
88 | } | |
89 | ||
1aa68db1 DM |
90 | static bool net_condition_test_strv(char * const *raw_patterns, |
91 | const char *string) { | |
618b196e DM |
92 | if (strv_isempty(raw_patterns)) |
93 | return true; | |
94 | ||
95 | /* If the patterns begin with "!", edit it out and negate the test. */ | |
96 | if (raw_patterns[0][0] == '!') { | |
97 | char **patterns; | |
98 | unsigned i, length; | |
99 | ||
100 | length = strv_length(raw_patterns) + 1; /* Include the NULL. */ | |
101 | patterns = newa(char*, length); | |
102 | patterns[0] = raw_patterns[0] + 1; /* Skip the "!". */ | |
103 | for (i = 1; i < length; i++) | |
104 | patterns[i] = raw_patterns[i]; | |
105 | ||
106 | return !string || !strv_fnmatch(patterns, string, 0); | |
107 | } | |
108 | ||
109 | return string && strv_fnmatch(raw_patterns, string, 0); | |
110 | } | |
111 | ||
be32eb9b | 112 | bool net_match_config(const struct ether_addr *match_mac, |
5256e00e TG |
113 | char * const *match_paths, |
114 | char * const *match_drivers, | |
115 | char * const *match_types, | |
116 | char * const *match_names, | |
2cc412b5 TG |
117 | Condition *match_host, |
118 | Condition *match_virt, | |
119 | Condition *match_kernel, | |
edbb03e9 | 120 | Condition *match_arch, |
505f8da7 | 121 | const struct ether_addr *dev_mac, |
b3e01314 | 122 | const char *dev_path, |
bf175aaf | 123 | const char *dev_parent_driver, |
b3e01314 TG |
124 | const char *dev_driver, |
125 | const char *dev_type, | |
32bc8adc | 126 | const char *dev_name) { |
be32eb9b | 127 | |
2cb62395 | 128 | if (match_host && condition_test(match_host) <= 0) |
7eb08da4 | 129 | return false; |
2cc412b5 | 130 | |
2cb62395 | 131 | if (match_virt && condition_test(match_virt) <= 0) |
7eb08da4 | 132 | return false; |
2cc412b5 | 133 | |
2cb62395 | 134 | if (match_kernel && condition_test(match_kernel) <= 0) |
7eb08da4 | 135 | return false; |
2cc412b5 | 136 | |
2cb62395 | 137 | if (match_arch && condition_test(match_arch) <= 0) |
7eb08da4 | 138 | return false; |
edbb03e9 | 139 | |
505f8da7 | 140 | if (match_mac && (!dev_mac || memcmp(match_mac, dev_mac, ETH_ALEN))) |
7eb08da4 | 141 | return false; |
be32eb9b | 142 | |
618b196e | 143 | if (!net_condition_test_strv(match_paths, dev_path)) |
ee5de57b | 144 | return false; |
5256e00e | 145 | |
618b196e | 146 | if (!net_condition_test_strv(match_drivers, dev_driver)) |
ee5de57b | 147 | return false; |
5256e00e | 148 | |
618b196e | 149 | if (!net_condition_test_strv(match_types, dev_type)) |
ee5de57b | 150 | return false; |
5256e00e | 151 | |
618b196e | 152 | if (!net_condition_test_strv(match_names, dev_name)) |
ee5de57b | 153 | return false; |
5256e00e | 154 | |
7eb08da4 | 155 | return true; |
be32eb9b | 156 | } |
5fde13d7 | 157 | |
2cc412b5 TG |
158 | int config_parse_net_condition(const char *unit, |
159 | const char *filename, | |
160 | unsigned line, | |
161 | const char *section, | |
162 | unsigned section_line, | |
163 | const char *lvalue, | |
164 | int ltype, | |
165 | const char *rvalue, | |
166 | void *data, | |
167 | void *userdata) { | |
168 | ||
169 | ConditionType cond = ltype; | |
170 | Condition **ret = data; | |
171 | bool negate; | |
172 | Condition *c; | |
173 | _cleanup_free_ char *s = NULL; | |
174 | ||
175 | assert(filename); | |
176 | assert(lvalue); | |
177 | assert(rvalue); | |
178 | assert(data); | |
179 | ||
180 | negate = rvalue[0] == '!'; | |
181 | if (negate) | |
182 | rvalue++; | |
183 | ||
184 | s = strdup(rvalue); | |
185 | if (!s) | |
186 | return log_oom(); | |
187 | ||
188 | c = condition_new(cond, s, false, negate); | |
189 | if (!c) | |
190 | return log_oom(); | |
191 | ||
192 | if (*ret) | |
193 | condition_free(*ret); | |
194 | ||
195 | *ret = c; | |
196 | return 0; | |
197 | } | |
198 | ||
d31645ad LP |
199 | int config_parse_ifnames( |
200 | const char *unit, | |
201 | const char *filename, | |
202 | unsigned line, | |
203 | const char *section, | |
204 | unsigned section_line, | |
205 | const char *lvalue, | |
206 | int ltype, | |
207 | const char *rvalue, | |
208 | void *data, | |
209 | void *userdata) { | |
5256e00e TG |
210 | |
211 | char ***sv = data; | |
5256e00e TG |
212 | int r; |
213 | ||
214 | assert(filename); | |
215 | assert(lvalue); | |
216 | assert(rvalue); | |
217 | assert(data); | |
218 | ||
93e28226 SS |
219 | for (;;) { |
220 | _cleanup_free_ char *word = NULL; | |
5256e00e | 221 | |
93e28226 | 222 | r = extract_first_word(&rvalue, &word, NULL, 0); |
a9dd908d LP |
223 | if (r < 0) { |
224 | log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse interface name list: %s", rvalue); | |
225 | return 0; | |
226 | } | |
93e28226 SS |
227 | if (r == 0) |
228 | break; | |
5256e00e | 229 | |
d31645ad LP |
230 | if (!ifname_valid(word)) { |
231 | log_syntax(unit, LOG_ERR, filename, line, 0, "Interface name is not valid or too long, ignoring assignment: %s", rvalue); | |
5256e00e TG |
232 | return 0; |
233 | } | |
234 | ||
93e28226 | 235 | r = strv_push(sv, word); |
5256e00e TG |
236 | if (r < 0) |
237 | return log_oom(); | |
93e28226 SS |
238 | |
239 | word = NULL; | |
5256e00e TG |
240 | } |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
d2df0d0e TG |
245 | int config_parse_ifalias(const char *unit, |
246 | const char *filename, | |
247 | unsigned line, | |
248 | const char *section, | |
71a61510 | 249 | unsigned section_line, |
d2df0d0e TG |
250 | const char *lvalue, |
251 | int ltype, | |
252 | const char *rvalue, | |
253 | void *data, | |
254 | void *userdata) { | |
255 | ||
256 | char **s = data; | |
9c39eb5c | 257 | _cleanup_free_ char *n = NULL; |
d2df0d0e TG |
258 | |
259 | assert(filename); | |
260 | assert(lvalue); | |
261 | assert(rvalue); | |
262 | assert(data); | |
263 | ||
264 | n = strdup(rvalue); | |
265 | if (!n) | |
266 | return log_oom(); | |
267 | ||
268 | if (!ascii_is_valid(n) || strlen(n) >= IFALIASZ) { | |
12ca818f | 269 | log_syntax(unit, LOG_ERR, filename, line, 0, "Interface alias is not ASCII clean or is too long, ignoring assignment: %s", rvalue); |
d2df0d0e TG |
270 | return 0; |
271 | } | |
272 | ||
273 | free(*s); | |
9c39eb5c | 274 | if (*n) { |
d2df0d0e | 275 | *s = n; |
9c39eb5c TG |
276 | n = NULL; |
277 | } else | |
d2df0d0e | 278 | *s = NULL; |
d2df0d0e TG |
279 | |
280 | return 0; | |
281 | } | |
282 | ||
5fde13d7 TG |
283 | int config_parse_hwaddr(const char *unit, |
284 | const char *filename, | |
285 | unsigned line, | |
286 | const char *section, | |
71a61510 | 287 | unsigned section_line, |
5fde13d7 TG |
288 | const char *lvalue, |
289 | int ltype, | |
290 | const char *rvalue, | |
291 | void *data, | |
292 | void *userdata) { | |
293 | struct ether_addr **hwaddr = data; | |
294 | struct ether_addr *n; | |
9ed8b06c DKG |
295 | const char *start; |
296 | size_t offset; | |
5fde13d7 TG |
297 | int r; |
298 | ||
299 | assert(filename); | |
300 | assert(lvalue); | |
301 | assert(rvalue); | |
302 | assert(data); | |
303 | ||
a12fa420 | 304 | n = new0(struct ether_addr, 1); |
5fde13d7 TG |
305 | if (!n) |
306 | return log_oom(); | |
307 | ||
9ed8b06c DKG |
308 | start = rvalue + strspn(rvalue, WHITESPACE); |
309 | r = ether_addr_from_string(start, n, &offset); | |
310 | ||
311 | if (r || (start[offset + strspn(start + offset, WHITESPACE)] != '\0')) { | |
12ca818f | 312 | log_syntax(unit, LOG_ERR, filename, line, 0, "Not a valid MAC address, ignoring assignment: %s", rvalue); |
5fde13d7 TG |
313 | free(n); |
314 | return 0; | |
315 | } | |
316 | ||
317 | free(*hwaddr); | |
318 | *hwaddr = n; | |
319 | ||
320 | return 0; | |
321 | } | |
f5284182 | 322 | |
413708d1 VK |
323 | int config_parse_iaid(const char *unit, |
324 | const char *filename, | |
325 | unsigned line, | |
326 | const char *section, | |
327 | unsigned section_line, | |
328 | const char *lvalue, | |
329 | int ltype, | |
330 | const char *rvalue, | |
331 | void *data, | |
332 | void *userdata) { | |
333 | uint32_t iaid; | |
334 | int r; | |
335 | ||
336 | assert(filename); | |
337 | assert(lvalue); | |
338 | assert(rvalue); | |
339 | assert(data); | |
340 | ||
341 | r = safe_atou32(rvalue, &iaid); | |
342 | if (r < 0) { | |
b7f71444 VK |
343 | log_syntax(unit, LOG_ERR, filename, line, r, |
344 | "Unable to read IAID, ignoring assignment: %s", rvalue); | |
345 | return 0; | |
413708d1 VK |
346 | } |
347 | ||
348 | *((uint32_t *)data) = iaid; | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
f00ff0de DJL |
353 | int config_parse_bridge_port_priority( |
354 | const char *unit, | |
355 | const char *filename, | |
356 | unsigned line, | |
357 | const char *section, | |
358 | unsigned section_line, | |
359 | const char *lvalue, | |
360 | int ltype, | |
361 | const char *rvalue, | |
362 | void *data, | |
363 | void *userdata) { | |
364 | ||
365 | uint16_t i; | |
366 | int r; | |
367 | ||
368 | assert(filename); | |
369 | assert(lvalue); | |
370 | assert(rvalue); | |
371 | assert(data); | |
372 | ||
373 | r = safe_atou16(rvalue, &i); | |
374 | if (r < 0) { | |
375 | log_syntax(unit, LOG_ERR, filename, line, r, | |
376 | "Failed to parse bridge port priority, ignoring: %s", rvalue); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | if (i > LINK_BRIDGE_PORT_PRIORITY_MAX) { | |
381 | log_syntax(unit, LOG_ERR, filename, line, r, | |
382 | "Bridge port priority is larger than maximum %u, ignoring: %s", LINK_BRIDGE_PORT_PRIORITY_MAX, rvalue); | |
383 | return 0; | |
384 | } | |
385 | ||
386 | *((uint16_t *)data) = i; | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | ||
b0e39c82 | 392 | void serialize_in_addrs(FILE *f, const struct in_addr *addresses, size_t size) { |
09bee74d TG |
393 | unsigned i; |
394 | ||
395 | assert(f); | |
09bee74d TG |
396 | assert(addresses); |
397 | assert(size); | |
398 | ||
09bee74d TG |
399 | for (i = 0; i < size; i++) |
400 | fprintf(f, "%s%s", inet_ntoa(addresses[i]), | |
401 | (i < (size - 1)) ? " ": ""); | |
09bee74d TG |
402 | } |
403 | ||
a2ba62c7 | 404 | int deserialize_in_addrs(struct in_addr **ret, const char *string) { |
09bee74d | 405 | _cleanup_free_ struct in_addr *addresses = NULL; |
a2ba62c7 | 406 | int size = 0; |
09bee74d TG |
407 | |
408 | assert(ret); | |
09bee74d TG |
409 | assert(string); |
410 | ||
93e28226 SS |
411 | for (;;) { |
412 | _cleanup_free_ char *word = NULL; | |
09bee74d TG |
413 | struct in_addr *new_addresses; |
414 | int r; | |
415 | ||
93e28226 SS |
416 | r = extract_first_word(&string, &word, NULL, 0); |
417 | if (r < 0) | |
418 | return r; | |
419 | if (r == 0) | |
420 | break; | |
421 | ||
09bee74d TG |
422 | new_addresses = realloc(addresses, (size + 1) * sizeof(struct in_addr)); |
423 | if (!new_addresses) | |
424 | return -ENOMEM; | |
425 | else | |
426 | addresses = new_addresses; | |
427 | ||
93e28226 | 428 | r = inet_pton(AF_INET, word, &(addresses[size])); |
09bee74d TG |
429 | if (r <= 0) |
430 | continue; | |
431 | ||
313cefa1 | 432 | size++; |
09bee74d TG |
433 | } |
434 | ||
09bee74d TG |
435 | *ret = addresses; |
436 | addresses = NULL; | |
437 | ||
a2ba62c7 | 438 | return size; |
09bee74d TG |
439 | } |
440 | ||
1f152e4b | 441 | void serialize_in6_addrs(FILE *f, const struct in6_addr *addresses, size_t size) { |
b729fa14 PF |
442 | unsigned i; |
443 | ||
444 | assert(f); | |
445 | assert(addresses); | |
446 | assert(size); | |
447 | ||
1f152e4b LP |
448 | for (i = 0; i < size; i++) { |
449 | char buffer[INET6_ADDRSTRLEN]; | |
450 | ||
451 | fputs(inet_ntop(AF_INET6, addresses+i, buffer, sizeof(buffer)), f); | |
452 | ||
453 | if (i < size - 1) | |
454 | fputc(' ', f); | |
455 | } | |
b729fa14 PF |
456 | } |
457 | ||
a2ba62c7 | 458 | int deserialize_in6_addrs(struct in6_addr **ret, const char *string) { |
09bee74d | 459 | _cleanup_free_ struct in6_addr *addresses = NULL; |
a2ba62c7 | 460 | int size = 0; |
09bee74d TG |
461 | |
462 | assert(ret); | |
09bee74d TG |
463 | assert(string); |
464 | ||
93e28226 SS |
465 | for (;;) { |
466 | _cleanup_free_ char *word = NULL; | |
09bee74d TG |
467 | struct in6_addr *new_addresses; |
468 | int r; | |
469 | ||
93e28226 SS |
470 | r = extract_first_word(&string, &word, NULL, 0); |
471 | if (r < 0) | |
472 | return r; | |
473 | if (r == 0) | |
474 | break; | |
475 | ||
09bee74d TG |
476 | new_addresses = realloc(addresses, (size + 1) * sizeof(struct in6_addr)); |
477 | if (!new_addresses) | |
478 | return -ENOMEM; | |
479 | else | |
480 | addresses = new_addresses; | |
481 | ||
93e28226 | 482 | r = inet_pton(AF_INET6, word, &(addresses[size])); |
09bee74d TG |
483 | if (r <= 0) |
484 | continue; | |
485 | ||
486 | size++; | |
487 | } | |
488 | ||
09bee74d TG |
489 | *ret = addresses; |
490 | addresses = NULL; | |
491 | ||
a2ba62c7 | 492 | return size; |
09bee74d | 493 | } |
e1ea665e | 494 | |
f8693fc7 | 495 | void serialize_dhcp_routes(FILE *f, const char *key, sd_dhcp_route **routes, size_t size) { |
e1ea665e EY |
496 | unsigned i; |
497 | ||
498 | assert(f); | |
499 | assert(key); | |
500 | assert(routes); | |
501 | assert(size); | |
502 | ||
503 | fprintf(f, "%s=", key); | |
504 | ||
fbf7dcb5 | 505 | for (i = 0; i < size; i++) { |
f8693fc7 BG |
506 | struct in_addr dest, gw; |
507 | uint8_t length; | |
508 | ||
509 | assert_se(sd_dhcp_route_get_destination(routes[i], &dest) >= 0); | |
510 | assert_se(sd_dhcp_route_get_gateway(routes[i], &gw) >= 0); | |
511 | assert_se(sd_dhcp_route_get_destination_prefix_length(routes[i], &length) >= 0); | |
512 | ||
513 | fprintf(f, "%s/%" PRIu8, inet_ntoa(dest), length); | |
514 | fprintf(f, ",%s%s", inet_ntoa(gw), (i < (size - 1)) ? " ": ""); | |
fbf7dcb5 | 515 | } |
e1ea665e EY |
516 | |
517 | fputs("\n", f); | |
518 | } | |
519 | ||
520 | int deserialize_dhcp_routes(struct sd_dhcp_route **ret, size_t *ret_size, size_t *ret_allocated, const char *string) { | |
521 | _cleanup_free_ struct sd_dhcp_route *routes = NULL; | |
522 | size_t size = 0, allocated = 0; | |
e1ea665e EY |
523 | |
524 | assert(ret); | |
525 | assert(ret_size); | |
526 | assert(ret_allocated); | |
527 | assert(string); | |
528 | ||
93e28226 SS |
529 | /* WORD FORMAT: dst_ip/dst_prefixlen,gw_ip */ |
530 | for (;;) { | |
531 | _cleanup_free_ char *word = NULL; | |
e1ea665e EY |
532 | char *tok, *tok_end; |
533 | unsigned n; | |
534 | int r; | |
535 | ||
93e28226 SS |
536 | r = extract_first_word(&string, &word, NULL, 0); |
537 | if (r < 0) | |
538 | return r; | |
539 | if (r == 0) | |
540 | break; | |
e1ea665e | 541 | |
93e28226 | 542 | if (!GREEDY_REALLOC(routes, allocated, size + 1)) |
31db0120 | 543 | return -ENOMEM; |
e1ea665e | 544 | |
93e28226 | 545 | tok = word; |
e1ea665e EY |
546 | |
547 | /* get the subnet */ | |
548 | tok_end = strchr(tok, '/'); | |
549 | if (!tok_end) | |
550 | continue; | |
551 | *tok_end = '\0'; | |
552 | ||
553 | r = inet_aton(tok, &routes[size].dst_addr); | |
554 | if (r == 0) | |
555 | continue; | |
556 | ||
557 | tok = tok_end + 1; | |
558 | ||
559 | /* get the prefixlen */ | |
560 | tok_end = strchr(tok, ','); | |
561 | if (!tok_end) | |
562 | continue; | |
563 | ||
564 | *tok_end = '\0'; | |
565 | ||
566 | r = safe_atou(tok, &n); | |
567 | if (r < 0 || n > 32) | |
568 | continue; | |
569 | ||
570 | routes[size].dst_prefixlen = (uint8_t) n; | |
571 | tok = tok_end + 1; | |
572 | ||
573 | /* get the gateway */ | |
574 | r = inet_aton(tok, &routes[size].gw_addr); | |
575 | if (r == 0) | |
576 | continue; | |
577 | ||
578 | size++; | |
579 | } | |
580 | ||
581 | *ret_size = size; | |
582 | *ret_allocated = allocated; | |
583 | *ret = routes; | |
584 | routes = NULL; | |
585 | ||
586 | return 0; | |
587 | } | |
a073309f | 588 | |
e4735228 | 589 | int serialize_dhcp_option(FILE *f, const char *key, const void *data, size_t size) { |
a073309f AC |
590 | _cleanup_free_ char *hex_buf = NULL; |
591 | ||
592 | assert(f); | |
593 | assert(key); | |
594 | assert(data); | |
595 | ||
596 | hex_buf = hexmem(data, size); | |
597 | if (hex_buf == NULL) | |
598 | return -ENOMEM; | |
599 | ||
600 | fprintf(f, "%s=%s\n", key, hex_buf); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
e4735228 | 605 | int deserialize_dhcp_option(void **data, size_t *data_len, const char *string) { |
a073309f AC |
606 | assert(data); |
607 | assert(data_len); | |
608 | assert(string); | |
609 | ||
610 | if (strlen(string) % 2) | |
611 | return -EINVAL; | |
612 | ||
613 | return unhexmem(string, strlen(string), (void **)data, data_len); | |
614 | } |