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1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |
2 | ||
3 | #include <arpa/inet.h> | |
4 | #include <linux/if.h> | |
5 | #include <netinet/ether.h> | |
6 | ||
7 | #include "sd-id128.h" | |
8 | #include "sd-ndisc.h" | |
9 | ||
10 | #include "alloc-util.h" | |
11 | #include "arphrd-list.h" | |
12 | #include "condition.h" | |
13 | #include "conf-parser.h" | |
14 | #include "device-util.h" | |
15 | #include "dhcp-lease-internal.h" | |
16 | #include "env-util.h" | |
17 | #include "ether-addr-util.h" | |
18 | #include "hexdecoct.h" | |
19 | #include "log.h" | |
20 | #include "network-internal.h" | |
21 | #include "parse-util.h" | |
22 | #include "siphash24.h" | |
23 | #include "socket-util.h" | |
24 | #include "string-table.h" | |
25 | #include "string-util.h" | |
26 | #include "strv.h" | |
27 | #include "utf8.h" | |
28 | #include "util.h" | |
29 | ||
30 | const char *net_get_name_persistent(sd_device *device) { | |
31 | const char *name, *field; | |
32 | ||
33 | assert(device); | |
34 | ||
35 | /* fetch some persistent data unique (on this machine) to this device */ | |
36 | FOREACH_STRING(field, "ID_NET_NAME_ONBOARD", "ID_NET_NAME_SLOT", "ID_NET_NAME_PATH", "ID_NET_NAME_MAC") | |
37 | if (sd_device_get_property_value(device, field, &name) >= 0) | |
38 | return name; | |
39 | ||
40 | return NULL; | |
41 | } | |
42 | ||
43 | #define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a) | |
44 | ||
45 | int net_get_unique_predictable_data(sd_device *device, bool use_sysname, uint64_t *result) { | |
46 | size_t l, sz = 0; | |
47 | const char *name; | |
48 | int r; | |
49 | uint8_t *v; | |
50 | ||
51 | assert(device); | |
52 | ||
53 | /* net_get_name_persistent() will return one of the device names based on stable information about | |
54 | * the device. If this is not available, we fall back to using the actual device name. */ | |
55 | name = net_get_name_persistent(device); | |
56 | if (!name && use_sysname) | |
57 | (void) sd_device_get_sysname(device, &name); | |
58 | if (!name) | |
59 | return log_device_debug_errno(device, SYNTHETIC_ERRNO(ENODATA), | |
60 | "No stable identifying information found"); | |
61 | ||
62 | log_device_debug(device, "Using \"%s\" as stable identifying information", name); | |
63 | l = strlen(name); | |
64 | sz = sizeof(sd_id128_t) + l; | |
65 | v = newa(uint8_t, sz); | |
66 | ||
67 | /* Fetch some persistent data unique to this machine */ | |
68 | r = sd_id128_get_machine((sd_id128_t*) v); | |
69 | if (r < 0) | |
70 | return r; | |
71 | memcpy(v + sizeof(sd_id128_t), name, l); | |
72 | ||
73 | /* Let's hash the machine ID plus the device name. We use | |
74 | * a fixed, but originally randomly created hash key here. */ | |
75 | *result = htole64(siphash24(v, sz, HASH_KEY.bytes)); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | static bool net_condition_test_strv(char * const *patterns, const char *string) { | |
80 | char * const *p; | |
81 | bool match = false, has_positive_rule = false; | |
82 | ||
83 | if (strv_isempty(patterns)) | |
84 | return true; | |
85 | ||
86 | STRV_FOREACH(p, patterns) { | |
87 | const char *q = *p; | |
88 | bool invert; | |
89 | ||
90 | invert = *q == '!'; | |
91 | q += invert; | |
92 | ||
93 | if (!invert) | |
94 | has_positive_rule = true; | |
95 | ||
96 | if (string && fnmatch(q, string, 0) == 0) { | |
97 | if (invert) | |
98 | return false; | |
99 | else | |
100 | match = true; | |
101 | } | |
102 | } | |
103 | ||
104 | return has_positive_rule ? match : true; | |
105 | } | |
106 | ||
107 | static bool net_condition_test_ifname(char * const *patterns, const char *ifname, char * const *alternative_names) { | |
108 | if (net_condition_test_strv(patterns, ifname)) | |
109 | return true; | |
110 | ||
111 | char * const *p; | |
112 | STRV_FOREACH(p, alternative_names) | |
113 | if (net_condition_test_strv(patterns, *p)) | |
114 | return true; | |
115 | ||
116 | return false; | |
117 | } | |
118 | ||
119 | static int net_condition_test_property(char * const *match_property, sd_device *device) { | |
120 | char * const *p; | |
121 | ||
122 | if (strv_isempty(match_property)) | |
123 | return true; | |
124 | ||
125 | STRV_FOREACH(p, match_property) { | |
126 | _cleanup_free_ char *key = NULL; | |
127 | const char *val, *dev_val; | |
128 | bool invert, v; | |
129 | ||
130 | invert = **p == '!'; | |
131 | ||
132 | val = strchr(*p + invert, '='); | |
133 | if (!val) | |
134 | return -EINVAL; | |
135 | ||
136 | key = strndup(*p + invert, val - *p - invert); | |
137 | if (!key) | |
138 | return -ENOMEM; | |
139 | ||
140 | val++; | |
141 | ||
142 | v = device && | |
143 | sd_device_get_property_value(device, key, &dev_val) >= 0 && | |
144 | fnmatch(val, dev_val, 0) == 0; | |
145 | ||
146 | if (invert ? v : !v) | |
147 | return false; | |
148 | } | |
149 | ||
150 | return true; | |
151 | } | |
152 | ||
153 | static const char *const wifi_iftype_table[NL80211_IFTYPE_MAX+1] = { | |
154 | [NL80211_IFTYPE_ADHOC] = "ad-hoc", | |
155 | [NL80211_IFTYPE_STATION] = "station", | |
156 | [NL80211_IFTYPE_AP] = "ap", | |
157 | [NL80211_IFTYPE_AP_VLAN] = "ap-vlan", | |
158 | [NL80211_IFTYPE_WDS] = "wds", | |
159 | [NL80211_IFTYPE_MONITOR] = "monitor", | |
160 | [NL80211_IFTYPE_MESH_POINT] = "mesh-point", | |
161 | [NL80211_IFTYPE_P2P_CLIENT] = "p2p-client", | |
162 | [NL80211_IFTYPE_P2P_GO] = "p2p-go", | |
163 | [NL80211_IFTYPE_P2P_DEVICE] = "p2p-device", | |
164 | [NL80211_IFTYPE_OCB] = "ocb", | |
165 | [NL80211_IFTYPE_NAN] = "nan", | |
166 | }; | |
167 | ||
168 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(wifi_iftype, enum nl80211_iftype); | |
169 | ||
170 | char *link_get_type_string(unsigned short iftype, sd_device *device) { | |
171 | const char *t, *devtype; | |
172 | char *p; | |
173 | ||
174 | if (device && | |
175 | sd_device_get_devtype(device, &devtype) >= 0 && | |
176 | !isempty(devtype)) | |
177 | return strdup(devtype); | |
178 | ||
179 | t = arphrd_to_name(iftype); | |
180 | if (!t) | |
181 | return NULL; | |
182 | ||
183 | p = strdup(t); | |
184 | if (!p) | |
185 | return NULL; | |
186 | ||
187 | ascii_strlower(p); | |
188 | return p; | |
189 | } | |
190 | ||
191 | bool net_match_config(Set *match_mac, | |
192 | Set *match_permanent_mac, | |
193 | char * const *match_paths, | |
194 | char * const *match_drivers, | |
195 | char * const *match_iftypes, | |
196 | char * const *match_names, | |
197 | char * const *match_property, | |
198 | char * const *match_wifi_iftype, | |
199 | char * const *match_ssid, | |
200 | Set *match_bssid, | |
201 | sd_device *device, | |
202 | const struct ether_addr *dev_mac, | |
203 | const struct ether_addr *dev_permanent_mac, | |
204 | const char *dev_driver, | |
205 | unsigned short dev_iftype, | |
206 | const char *dev_name, | |
207 | char * const *alternative_names, | |
208 | enum nl80211_iftype dev_wifi_iftype, | |
209 | const char *dev_ssid, | |
210 | const struct ether_addr *dev_bssid) { | |
211 | ||
212 | _cleanup_free_ char *dev_iftype_str; | |
213 | const char *dev_path = NULL; | |
214 | ||
215 | dev_iftype_str = link_get_type_string(dev_iftype, device); | |
216 | ||
217 | if (device) { | |
218 | const char *mac_str; | |
219 | ||
220 | (void) sd_device_get_property_value(device, "ID_PATH", &dev_path); | |
221 | if (!dev_driver) | |
222 | (void) sd_device_get_property_value(device, "ID_NET_DRIVER", &dev_driver); | |
223 | if (!dev_name) | |
224 | (void) sd_device_get_sysname(device, &dev_name); | |
225 | if (!dev_mac && | |
226 | sd_device_get_sysattr_value(device, "address", &mac_str) >= 0) | |
227 | dev_mac = ether_aton(mac_str); | |
228 | } | |
229 | ||
230 | if (match_mac && (!dev_mac || !set_contains(match_mac, dev_mac))) | |
231 | return false; | |
232 | ||
233 | if (match_permanent_mac && | |
234 | (!dev_permanent_mac || | |
235 | ether_addr_is_null(dev_permanent_mac) || | |
236 | !set_contains(match_permanent_mac, dev_permanent_mac))) | |
237 | return false; | |
238 | ||
239 | if (!net_condition_test_strv(match_paths, dev_path)) | |
240 | return false; | |
241 | ||
242 | if (!net_condition_test_strv(match_drivers, dev_driver)) | |
243 | return false; | |
244 | ||
245 | if (!net_condition_test_strv(match_iftypes, dev_iftype_str)) | |
246 | return false; | |
247 | ||
248 | if (!net_condition_test_ifname(match_names, dev_name, alternative_names)) | |
249 | return false; | |
250 | ||
251 | if (!net_condition_test_property(match_property, device)) | |
252 | return false; | |
253 | ||
254 | if (!net_condition_test_strv(match_wifi_iftype, wifi_iftype_to_string(dev_wifi_iftype))) | |
255 | return false; | |
256 | ||
257 | if (!net_condition_test_strv(match_ssid, dev_ssid)) | |
258 | return false; | |
259 | ||
260 | if (match_bssid && (!dev_bssid || !set_contains(match_bssid, dev_bssid))) | |
261 | return false; | |
262 | ||
263 | return true; | |
264 | } | |
265 | ||
266 | int config_parse_net_condition(const char *unit, | |
267 | const char *filename, | |
268 | unsigned line, | |
269 | const char *section, | |
270 | unsigned section_line, | |
271 | const char *lvalue, | |
272 | int ltype, | |
273 | const char *rvalue, | |
274 | void *data, | |
275 | void *userdata) { | |
276 | ||
277 | ConditionType cond = ltype; | |
278 | Condition **list = data, *c; | |
279 | bool negate; | |
280 | ||
281 | assert(filename); | |
282 | assert(lvalue); | |
283 | assert(rvalue); | |
284 | assert(data); | |
285 | ||
286 | if (isempty(rvalue)) { | |
287 | *list = condition_free_list_type(*list, cond); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | negate = rvalue[0] == '!'; | |
292 | if (negate) | |
293 | rvalue++; | |
294 | ||
295 | c = condition_new(cond, rvalue, false, negate); | |
296 | if (!c) | |
297 | return log_oom(); | |
298 | ||
299 | /* Drop previous assignment. */ | |
300 | *list = condition_free_list_type(*list, cond); | |
301 | ||
302 | LIST_PREPEND(conditions, *list, c); | |
303 | return 0; | |
304 | } | |
305 | ||
306 | int config_parse_match_strv( | |
307 | const char *unit, | |
308 | const char *filename, | |
309 | unsigned line, | |
310 | const char *section, | |
311 | unsigned section_line, | |
312 | const char *lvalue, | |
313 | int ltype, | |
314 | const char *rvalue, | |
315 | void *data, | |
316 | void *userdata) { | |
317 | ||
318 | const char *p = rvalue; | |
319 | char ***sv = data; | |
320 | bool invert; | |
321 | int r; | |
322 | ||
323 | assert(filename); | |
324 | assert(lvalue); | |
325 | assert(rvalue); | |
326 | assert(data); | |
327 | ||
328 | if (isempty(rvalue)) { | |
329 | *sv = strv_free(*sv); | |
330 | return 0; | |
331 | } | |
332 | ||
333 | invert = *p == '!'; | |
334 | p += invert; | |
335 | ||
336 | for (;;) { | |
337 | _cleanup_free_ char *word = NULL, *k = NULL; | |
338 | ||
339 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE); | |
340 | if (r == 0) | |
341 | return 0; | |
342 | if (r == -ENOMEM) | |
343 | return log_oom(); | |
344 | if (r < 0) { | |
345 | log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
346 | return 0; | |
347 | } | |
348 | ||
349 | if (invert) { | |
350 | k = strjoin("!", word); | |
351 | if (!k) | |
352 | return log_oom(); | |
353 | } else | |
354 | k = TAKE_PTR(word); | |
355 | ||
356 | r = strv_consume(sv, TAKE_PTR(k)); | |
357 | if (r < 0) | |
358 | return log_oom(); | |
359 | } | |
360 | } | |
361 | ||
362 | int config_parse_match_ifnames( | |
363 | const char *unit, | |
364 | const char *filename, | |
365 | unsigned line, | |
366 | const char *section, | |
367 | unsigned section_line, | |
368 | const char *lvalue, | |
369 | int ltype, | |
370 | const char *rvalue, | |
371 | void *data, | |
372 | void *userdata) { | |
373 | ||
374 | const char *p = rvalue; | |
375 | char ***sv = data; | |
376 | bool invert; | |
377 | int r; | |
378 | ||
379 | assert(filename); | |
380 | assert(lvalue); | |
381 | assert(rvalue); | |
382 | assert(data); | |
383 | ||
384 | invert = *p == '!'; | |
385 | p += invert; | |
386 | ||
387 | for (;;) { | |
388 | _cleanup_free_ char *word = NULL, *k = NULL; | |
389 | ||
390 | r = extract_first_word(&p, &word, NULL, 0); | |
391 | if (r == 0) | |
392 | return 0; | |
393 | if (r == -ENOMEM) | |
394 | return log_oom(); | |
395 | if (r < 0) { | |
396 | log_syntax(unit, LOG_ERR, filename, line, 0, | |
397 | "Failed to parse interface name list: %s", rvalue); | |
398 | return 0; | |
399 | } | |
400 | ||
401 | if (!ifname_valid_full(word, ltype)) { | |
402 | log_syntax(unit, LOG_ERR, filename, line, 0, | |
403 | "Interface name is not valid or too long, ignoring assignment: %s", word); | |
404 | continue; | |
405 | } | |
406 | ||
407 | if (invert) { | |
408 | k = strjoin("!", word); | |
409 | if (!k) | |
410 | return log_oom(); | |
411 | } else | |
412 | k = TAKE_PTR(word); | |
413 | ||
414 | r = strv_consume(sv, TAKE_PTR(k)); | |
415 | if (r < 0) | |
416 | return log_oom(); | |
417 | } | |
418 | } | |
419 | ||
420 | int config_parse_match_property( | |
421 | const char *unit, | |
422 | const char *filename, | |
423 | unsigned line, | |
424 | const char *section, | |
425 | unsigned section_line, | |
426 | const char *lvalue, | |
427 | int ltype, | |
428 | const char *rvalue, | |
429 | void *data, | |
430 | void *userdata) { | |
431 | ||
432 | const char *p = rvalue; | |
433 | char ***sv = data; | |
434 | bool invert; | |
435 | int r; | |
436 | ||
437 | assert(filename); | |
438 | assert(lvalue); | |
439 | assert(rvalue); | |
440 | assert(data); | |
441 | ||
442 | invert = *p == '!'; | |
443 | p += invert; | |
444 | ||
445 | for (;;) { | |
446 | _cleanup_free_ char *word = NULL, *k = NULL; | |
447 | ||
448 | r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE); | |
449 | if (r == 0) | |
450 | return 0; | |
451 | if (r == -ENOMEM) | |
452 | return log_oom(); | |
453 | if (r < 0) { | |
454 | log_syntax(unit, LOG_ERR, filename, line, 0, | |
455 | "Invalid syntax, ignoring: %s", rvalue); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | if (!env_assignment_is_valid(word)) { | |
460 | log_syntax(unit, LOG_ERR, filename, line, 0, | |
461 | "Invalid property or value, ignoring assignment: %s", word); | |
462 | continue; | |
463 | } | |
464 | ||
465 | if (invert) { | |
466 | k = strjoin("!", word); | |
467 | if (!k) | |
468 | return log_oom(); | |
469 | } else | |
470 | k = TAKE_PTR(word); | |
471 | ||
472 | r = strv_consume(sv, TAKE_PTR(k)); | |
473 | if (r < 0) | |
474 | return log_oom(); | |
475 | } | |
476 | } | |
477 | ||
478 | int config_parse_ifalias(const char *unit, | |
479 | const char *filename, | |
480 | unsigned line, | |
481 | const char *section, | |
482 | unsigned section_line, | |
483 | const char *lvalue, | |
484 | int ltype, | |
485 | const char *rvalue, | |
486 | void *data, | |
487 | void *userdata) { | |
488 | ||
489 | char **s = data; | |
490 | _cleanup_free_ char *n = NULL; | |
491 | ||
492 | assert(filename); | |
493 | assert(lvalue); | |
494 | assert(rvalue); | |
495 | assert(data); | |
496 | ||
497 | n = strdup(rvalue); | |
498 | if (!n) | |
499 | return log_oom(); | |
500 | ||
501 | if (!ascii_is_valid(n) || strlen(n) >= IFALIASZ) { | |
502 | log_syntax(unit, LOG_ERR, filename, line, 0, "Interface alias is not ASCII clean or is too long, ignoring assignment: %s", rvalue); | |
503 | return 0; | |
504 | } | |
505 | ||
506 | if (isempty(n)) | |
507 | *s = mfree(*s); | |
508 | else | |
509 | free_and_replace(*s, n); | |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
514 | int config_parse_hwaddr(const char *unit, | |
515 | const char *filename, | |
516 | unsigned line, | |
517 | const char *section, | |
518 | unsigned section_line, | |
519 | const char *lvalue, | |
520 | int ltype, | |
521 | const char *rvalue, | |
522 | void *data, | |
523 | void *userdata) { | |
524 | ||
525 | _cleanup_free_ struct ether_addr *n = NULL; | |
526 | struct ether_addr **hwaddr = data; | |
527 | int r; | |
528 | ||
529 | assert(filename); | |
530 | assert(lvalue); | |
531 | assert(rvalue); | |
532 | assert(data); | |
533 | ||
534 | n = new0(struct ether_addr, 1); | |
535 | if (!n) | |
536 | return log_oom(); | |
537 | ||
538 | r = ether_addr_from_string(rvalue, n); | |
539 | if (r < 0) { | |
540 | log_syntax(unit, LOG_ERR, filename, line, r, "Not a valid MAC address, ignoring assignment: %s", rvalue); | |
541 | return 0; | |
542 | } | |
543 | ||
544 | free_and_replace(*hwaddr, n); | |
545 | ||
546 | return 0; | |
547 | } | |
548 | ||
549 | int config_parse_hwaddrs(const char *unit, | |
550 | const char *filename, | |
551 | unsigned line, | |
552 | const char *section, | |
553 | unsigned section_line, | |
554 | const char *lvalue, | |
555 | int ltype, | |
556 | const char *rvalue, | |
557 | void *data, | |
558 | void *userdata) { | |
559 | ||
560 | _cleanup_set_free_free_ Set *s = NULL; | |
561 | const char *p = rvalue; | |
562 | Set **hwaddrs = data; | |
563 | int r; | |
564 | ||
565 | assert(filename); | |
566 | assert(lvalue); | |
567 | assert(rvalue); | |
568 | assert(data); | |
569 | ||
570 | if (isempty(rvalue)) { | |
571 | /* Empty assignment resets the list */ | |
572 | *hwaddrs = set_free_free(*hwaddrs); | |
573 | return 0; | |
574 | } | |
575 | ||
576 | s = set_new(ðer_addr_hash_ops); | |
577 | if (!s) | |
578 | return log_oom(); | |
579 | ||
580 | for (;;) { | |
581 | _cleanup_free_ char *word = NULL; | |
582 | _cleanup_free_ struct ether_addr *n = NULL; | |
583 | ||
584 | r = extract_first_word(&p, &word, NULL, 0); | |
585 | if (r == 0) | |
586 | break; | |
587 | if (r == -ENOMEM) | |
588 | return log_oom(); | |
589 | if (r < 0) { | |
590 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
591 | return 0; | |
592 | } | |
593 | ||
594 | n = new(struct ether_addr, 1); | |
595 | if (!n) | |
596 | return log_oom(); | |
597 | ||
598 | r = ether_addr_from_string(word, n); | |
599 | if (r < 0) { | |
600 | log_syntax(unit, LOG_ERR, filename, line, 0, "Not a valid MAC address, ignoring: %s", word); | |
601 | continue; | |
602 | } | |
603 | ||
604 | r = set_put(s, n); | |
605 | if (r < 0) | |
606 | return log_oom(); | |
607 | if (r > 0) | |
608 | n = NULL; /* avoid cleanup */ | |
609 | } | |
610 | ||
611 | r = set_ensure_allocated(hwaddrs, ðer_addr_hash_ops); | |
612 | if (r < 0) | |
613 | return log_oom(); | |
614 | ||
615 | r = set_move(*hwaddrs, s); | |
616 | if (r < 0) | |
617 | return log_oom(); | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
622 | int config_parse_bridge_port_priority( | |
623 | const char *unit, | |
624 | const char *filename, | |
625 | unsigned line, | |
626 | const char *section, | |
627 | unsigned section_line, | |
628 | const char *lvalue, | |
629 | int ltype, | |
630 | const char *rvalue, | |
631 | void *data, | |
632 | void *userdata) { | |
633 | ||
634 | uint16_t i; | |
635 | int r; | |
636 | ||
637 | assert(filename); | |
638 | assert(lvalue); | |
639 | assert(rvalue); | |
640 | assert(data); | |
641 | ||
642 | r = safe_atou16(rvalue, &i); | |
643 | if (r < 0) { | |
644 | log_syntax(unit, LOG_ERR, filename, line, r, | |
645 | "Failed to parse bridge port priority, ignoring: %s", rvalue); | |
646 | return 0; | |
647 | } | |
648 | ||
649 | if (i > LINK_BRIDGE_PORT_PRIORITY_MAX) { | |
650 | log_syntax(unit, LOG_ERR, filename, line, r, | |
651 | "Bridge port priority is larger than maximum %u, ignoring: %s", LINK_BRIDGE_PORT_PRIORITY_MAX, rvalue); | |
652 | return 0; | |
653 | } | |
654 | ||
655 | *((uint16_t *)data) = i; | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
660 | size_t serialize_in_addrs(FILE *f, | |
661 | const struct in_addr *addresses, | |
662 | size_t size, | |
663 | bool *with_leading_space, | |
664 | bool (*predicate)(const struct in_addr *addr)) { | |
665 | assert(f); | |
666 | assert(addresses); | |
667 | ||
668 | size_t count = 0; | |
669 | bool _space = false; | |
670 | if (!with_leading_space) | |
671 | with_leading_space = &_space; | |
672 | ||
673 | for (size_t i = 0; i < size; i++) { | |
674 | char sbuf[INET_ADDRSTRLEN]; | |
675 | ||
676 | if (predicate && !predicate(&addresses[i])) | |
677 | continue; | |
678 | ||
679 | if (*with_leading_space) | |
680 | fputc(' ', f); | |
681 | fputs(inet_ntop(AF_INET, &addresses[i], sbuf, sizeof(sbuf)), f); | |
682 | count++; | |
683 | *with_leading_space = true; | |
684 | } | |
685 | ||
686 | return count; | |
687 | } | |
688 | ||
689 | int deserialize_in_addrs(struct in_addr **ret, const char *string) { | |
690 | _cleanup_free_ struct in_addr *addresses = NULL; | |
691 | int size = 0; | |
692 | ||
693 | assert(ret); | |
694 | assert(string); | |
695 | ||
696 | for (;;) { | |
697 | _cleanup_free_ char *word = NULL; | |
698 | struct in_addr *new_addresses; | |
699 | int r; | |
700 | ||
701 | r = extract_first_word(&string, &word, NULL, 0); | |
702 | if (r < 0) | |
703 | return r; | |
704 | if (r == 0) | |
705 | break; | |
706 | ||
707 | new_addresses = reallocarray(addresses, size + 1, sizeof(struct in_addr)); | |
708 | if (!new_addresses) | |
709 | return -ENOMEM; | |
710 | else | |
711 | addresses = new_addresses; | |
712 | ||
713 | r = inet_pton(AF_INET, word, &(addresses[size])); | |
714 | if (r <= 0) | |
715 | continue; | |
716 | ||
717 | size++; | |
718 | } | |
719 | ||
720 | *ret = size > 0 ? TAKE_PTR(addresses) : NULL; | |
721 | ||
722 | return size; | |
723 | } | |
724 | ||
725 | void serialize_in6_addrs(FILE *f, const struct in6_addr *addresses, size_t size, bool *with_leading_space) { | |
726 | assert(f); | |
727 | assert(addresses); | |
728 | assert(size); | |
729 | ||
730 | bool _space = false; | |
731 | if (!with_leading_space) | |
732 | with_leading_space = &_space; | |
733 | ||
734 | for (size_t i = 0; i < size; i++) { | |
735 | char buffer[INET6_ADDRSTRLEN]; | |
736 | ||
737 | if (*with_leading_space) | |
738 | fputc(' ', f); | |
739 | fputs(inet_ntop(AF_INET6, addresses+i, buffer, sizeof(buffer)), f); | |
740 | *with_leading_space = true; | |
741 | } | |
742 | } | |
743 | ||
744 | int deserialize_in6_addrs(struct in6_addr **ret, const char *string) { | |
745 | _cleanup_free_ struct in6_addr *addresses = NULL; | |
746 | int size = 0; | |
747 | ||
748 | assert(ret); | |
749 | assert(string); | |
750 | ||
751 | for (;;) { | |
752 | _cleanup_free_ char *word = NULL; | |
753 | struct in6_addr *new_addresses; | |
754 | int r; | |
755 | ||
756 | r = extract_first_word(&string, &word, NULL, 0); | |
757 | if (r < 0) | |
758 | return r; | |
759 | if (r == 0) | |
760 | break; | |
761 | ||
762 | new_addresses = reallocarray(addresses, size + 1, sizeof(struct in6_addr)); | |
763 | if (!new_addresses) | |
764 | return -ENOMEM; | |
765 | else | |
766 | addresses = new_addresses; | |
767 | ||
768 | r = inet_pton(AF_INET6, word, &(addresses[size])); | |
769 | if (r <= 0) | |
770 | continue; | |
771 | ||
772 | size++; | |
773 | } | |
774 | ||
775 | *ret = TAKE_PTR(addresses); | |
776 | ||
777 | return size; | |
778 | } | |
779 | ||
780 | void serialize_dhcp_routes(FILE *f, const char *key, sd_dhcp_route **routes, size_t size) { | |
781 | assert(f); | |
782 | assert(key); | |
783 | assert(routes); | |
784 | assert(size); | |
785 | ||
786 | fprintf(f, "%s=", key); | |
787 | ||
788 | for (size_t i = 0; i < size; i++) { | |
789 | char sbuf[INET_ADDRSTRLEN]; | |
790 | struct in_addr dest, gw; | |
791 | uint8_t length; | |
792 | ||
793 | assert_se(sd_dhcp_route_get_destination(routes[i], &dest) >= 0); | |
794 | assert_se(sd_dhcp_route_get_gateway(routes[i], &gw) >= 0); | |
795 | assert_se(sd_dhcp_route_get_destination_prefix_length(routes[i], &length) >= 0); | |
796 | ||
797 | fprintf(f, "%s/%" PRIu8, inet_ntop(AF_INET, &dest, sbuf, sizeof sbuf), length); | |
798 | fprintf(f, ",%s%s", inet_ntop(AF_INET, &gw, sbuf, sizeof sbuf), i < size - 1 ? " ": ""); | |
799 | } | |
800 | ||
801 | fputs("\n", f); | |
802 | } | |
803 | ||
804 | int deserialize_dhcp_routes(struct sd_dhcp_route **ret, size_t *ret_size, size_t *ret_allocated, const char *string) { | |
805 | _cleanup_free_ struct sd_dhcp_route *routes = NULL; | |
806 | size_t size = 0, allocated = 0; | |
807 | ||
808 | assert(ret); | |
809 | assert(ret_size); | |
810 | assert(ret_allocated); | |
811 | assert(string); | |
812 | ||
813 | /* WORD FORMAT: dst_ip/dst_prefixlen,gw_ip */ | |
814 | for (;;) { | |
815 | _cleanup_free_ char *word = NULL; | |
816 | char *tok, *tok_end; | |
817 | unsigned n; | |
818 | int r; | |
819 | ||
820 | r = extract_first_word(&string, &word, NULL, 0); | |
821 | if (r < 0) | |
822 | return r; | |
823 | if (r == 0) | |
824 | break; | |
825 | ||
826 | if (!GREEDY_REALLOC(routes, allocated, size + 1)) | |
827 | return -ENOMEM; | |
828 | ||
829 | tok = word; | |
830 | ||
831 | /* get the subnet */ | |
832 | tok_end = strchr(tok, '/'); | |
833 | if (!tok_end) | |
834 | continue; | |
835 | *tok_end = '\0'; | |
836 | ||
837 | r = inet_aton(tok, &routes[size].dst_addr); | |
838 | if (r == 0) | |
839 | continue; | |
840 | ||
841 | tok = tok_end + 1; | |
842 | ||
843 | /* get the prefixlen */ | |
844 | tok_end = strchr(tok, ','); | |
845 | if (!tok_end) | |
846 | continue; | |
847 | ||
848 | *tok_end = '\0'; | |
849 | ||
850 | r = safe_atou(tok, &n); | |
851 | if (r < 0 || n > 32) | |
852 | continue; | |
853 | ||
854 | routes[size].dst_prefixlen = (uint8_t) n; | |
855 | tok = tok_end + 1; | |
856 | ||
857 | /* get the gateway */ | |
858 | r = inet_aton(tok, &routes[size].gw_addr); | |
859 | if (r == 0) | |
860 | continue; | |
861 | ||
862 | size++; | |
863 | } | |
864 | ||
865 | *ret_size = size; | |
866 | *ret_allocated = allocated; | |
867 | *ret = TAKE_PTR(routes); | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | int serialize_dhcp_option(FILE *f, const char *key, const void *data, size_t size) { | |
873 | _cleanup_free_ char *hex_buf = NULL; | |
874 | ||
875 | assert(f); | |
876 | assert(key); | |
877 | assert(data); | |
878 | ||
879 | hex_buf = hexmem(data, size); | |
880 | if (!hex_buf) | |
881 | return -ENOMEM; | |
882 | ||
883 | fprintf(f, "%s=%s\n", key, hex_buf); | |
884 | ||
885 | return 0; | |
886 | } |