1 /*
2  * WPA Supplicant / Configuration backend: text file
3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  *
8  * This file implements a configuration backend for text files. All the
9  * configuration information is stored in a text file that uses a format
10  * described in the sample configuration file, wpa_supplicant.conf.
11  */
12 
13 #include "includes.h"
14 #ifdef ANDROID
15 #include <sys/stat.h>
16 #endif /* ANDROID */
17 
18 #include "common.h"
19 #include "config.h"
20 #include "base64.h"
21 #include "uuid.h"
22 #include "common/ieee802_1x_defs.h"
23 #include "p2p/p2p.h"
24 #include "eap_peer/eap_methods.h"
25 #include "eap_peer/eap.h"
26 
27 
28 static int newline_terminated(const char *buf, size_t buflen)
29 {
30 	size_t len = os_strlen(buf);
31 	if (len == 0)
32 		return 0;
33 	if (len == buflen - 1 && buf[buflen - 1] != '\r' &&
34 	    buf[len - 1] != '\n')
35 		return 0;
36 	return 1;
37 }
38 
39 
40 static void skip_line_end(FILE *stream)
41 {
42 	char buf[100];
43 	while (fgets(buf, sizeof(buf), stream)) {
44 		buf[sizeof(buf) - 1] = '\0';
45 		if (newline_terminated(buf, sizeof(buf)))
46 			return;
47 	}
48 }
49 
50 
51 /**
52  * wpa_config_get_line - Read the next configuration file line
53  * @s: Buffer for the line
54  * @size: The buffer length
55  * @stream: File stream to read from
56  * @line: Pointer to a variable storing the file line number
57  * @_pos: Buffer for the pointer to the beginning of data on the text line or
58  * %NULL if not needed (returned value used instead)
59  * Returns: Pointer to the beginning of data on the text line or %NULL if no
60  * more text lines are available.
61  *
62  * This function reads the next non-empty line from the configuration file and
63  * removes comments. The returned string is guaranteed to be null-terminated.
64  */
65 static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
66 				  char **_pos)
67 {
68 	char *pos, *end, *sstart;
69 
70 	while (fgets(s, size, stream)) {
71 		(*line)++;
72 		s[size - 1] = '\0';
73 		if (!newline_terminated(s, size)) {
74 			/*
75 			 * The line was truncated - skip rest of it to avoid
76 			 * confusing error messages.
77 			 */
78 			wpa_printf(MSG_INFO, "Long line in configuration file "
79 				   "truncated");
80 			skip_line_end(stream);
81 		}
82 		pos = s;
83 
84 		/* Skip white space from the beginning of line. */
85 		while (*pos == ' ' || *pos == '\t' || *pos == '\r')
86 			pos++;
87 
88 		/* Skip comment lines and empty lines */
89 		if (*pos == '#' || *pos == '\n' || *pos == '\0')
90 			continue;
91 
92 		/*
93 		 * Remove # comments unless they are within a double quoted
94 		 * string.
95 		 */
96 		sstart = os_strchr(pos, '"');
97 		if (sstart)
98 			sstart = os_strrchr(sstart + 1, '"');
99 		if (!sstart)
100 			sstart = pos;
101 		end = os_strchr(sstart, '#');
102 		if (end)
103 			*end-- = '\0';
104 		else
105 			end = pos + os_strlen(pos) - 1;
106 
107 		/* Remove trailing white space. */
108 		while (end > pos &&
109 		       (*end == '\n' || *end == ' ' || *end == '\t' ||
110 			*end == '\r'))
111 			*end-- = '\0';
112 
113 		if (*pos == '\0')
114 			continue;
115 
116 		if (_pos)
117 			*_pos = pos;
118 		return pos;
119 	}
120 
121 	if (_pos)
122 		*_pos = NULL;
123 	return NULL;
124 }
125 
126 
127 static int wpa_config_validate_network(struct wpa_ssid *ssid, int line)
128 {
129 	int errors = 0;
130 
131 	if (ssid->passphrase) {
132 		if (ssid->psk_set) {
133 			wpa_printf(MSG_ERROR, "Line %d: both PSK and "
134 				   "passphrase configured.", line);
135 			errors++;
136 		}
137 		wpa_config_update_psk(ssid);
138 	}
139 
140 	if (ssid->disabled == 2)
141 		ssid->p2p_persistent_group = 1;
142 
143 	if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
144 	    !(ssid->pairwise_cipher & (WPA_CIPHER_CCMP | WPA_CIPHER_CCMP_256 |
145 				       WPA_CIPHER_GCMP | WPA_CIPHER_GCMP_256 |
146 				       WPA_CIPHER_NONE))) {
147 		/* Group cipher cannot be stronger than the pairwise cipher. */
148 		wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher"
149 			   " list since it was not allowed for pairwise "
150 			   "cipher", line);
151 		ssid->group_cipher &= ~WPA_CIPHER_CCMP;
152 	}
153 
154 	if (ssid->mode == WPAS_MODE_MESH &&
155 	    (ssid->key_mgmt != WPA_KEY_MGMT_NONE &&
156 	    ssid->key_mgmt != WPA_KEY_MGMT_SAE)) {
157 		wpa_printf(MSG_ERROR,
158 			   "Line %d: key_mgmt for mesh network should be open or SAE",
159 			   line);
160 		errors++;
161 	}
162 
163 #ifdef CONFIG_OCV
164 	if (ssid->ocv && ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
165 		wpa_printf(MSG_ERROR,
166 			   "Line %d: PMF needs to be enabled whenever using OCV",
167 			   line);
168 		errors++;
169 	}
170 #endif /* CONFIG_OCV */
171 
172 	return errors;
173 }
174 
175 
176 static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id)
177 {
178 	struct wpa_ssid *ssid;
179 	int errors = 0, end = 0;
180 	char buf[2000], *pos, *pos2;
181 
182 	wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block",
183 		   *line);
184 	ssid = os_zalloc(sizeof(*ssid));
185 	if (ssid == NULL)
186 		return NULL;
187 	dl_list_init(&ssid->psk_list);
188 	ssid->id = id;
189 
190 	wpa_config_set_network_defaults(ssid);
191 
192 	while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
193 		if (os_strcmp(pos, "}") == 0) {
194 			end = 1;
195 			break;
196 		}
197 
198 		pos2 = os_strchr(pos, '=');
199 		if (pos2 == NULL) {
200 			wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
201 				   "'%s'.", *line, pos);
202 			errors++;
203 			continue;
204 		}
205 
206 		*pos2++ = '\0';
207 		if (*pos2 == '"') {
208 			if (os_strchr(pos2 + 1, '"') == NULL) {
209 				wpa_printf(MSG_ERROR, "Line %d: invalid "
210 					   "quotation '%s'.", *line, pos2);
211 				errors++;
212 				continue;
213 			}
214 		}
215 
216 		if (wpa_config_set(ssid, pos, pos2, *line) < 0)
217 			errors++;
218 	}
219 
220 	if (!end) {
221 		wpa_printf(MSG_ERROR, "Line %d: network block was not "
222 			   "terminated properly.", *line);
223 		errors++;
224 	}
225 
226 	errors += wpa_config_validate_network(ssid, *line);
227 
228 	if (errors) {
229 		wpa_config_free_ssid(ssid);
230 		ssid = NULL;
231 	}
232 
233 	return ssid;
234 }
235 
236 
237 static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id)
238 {
239 	struct wpa_cred *cred;
240 	int errors = 0, end = 0;
241 	char buf[256], *pos, *pos2;
242 
243 	wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line);
244 	cred = os_zalloc(sizeof(*cred));
245 	if (cred == NULL)
246 		return NULL;
247 	cred->id = id;
248 	cred->sim_num = DEFAULT_USER_SELECTED_SIM;
249 
250 	while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
251 		if (os_strcmp(pos, "}") == 0) {
252 			end = 1;
253 			break;
254 		}
255 
256 		pos2 = os_strchr(pos, '=');
257 		if (pos2 == NULL) {
258 			wpa_printf(MSG_ERROR, "Line %d: Invalid cred line "
259 				   "'%s'.", *line, pos);
260 			errors++;
261 			continue;
262 		}
263 
264 		*pos2++ = '\0';
265 		if (*pos2 == '"') {
266 			if (os_strchr(pos2 + 1, '"') == NULL) {
267 				wpa_printf(MSG_ERROR, "Line %d: invalid "
268 					   "quotation '%s'.", *line, pos2);
269 				errors++;
270 				continue;
271 			}
272 		}
273 
274 		if (wpa_config_set_cred(cred, pos, pos2, *line) < 0)
275 			errors++;
276 	}
277 
278 	if (!end) {
279 		wpa_printf(MSG_ERROR, "Line %d: cred block was not "
280 			   "terminated properly.", *line);
281 		errors++;
282 	}
283 
284 	if (errors) {
285 		wpa_config_free_cred(cred);
286 		cred = NULL;
287 	}
288 
289 	return cred;
290 }
291 
292 
293 #ifndef CONFIG_NO_CONFIG_BLOBS
294 static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
295 						     const char *name)
296 {
297 	struct wpa_config_blob *blob;
298 	char buf[256], *pos;
299 	unsigned char *encoded = NULL, *nencoded;
300 	int end = 0;
301 	size_t encoded_len = 0, len;
302 
303 	wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
304 		   *line, name);
305 
306 	while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
307 		if (os_strcmp(pos, "}") == 0) {
308 			end = 1;
309 			break;
310 		}
311 
312 		len = os_strlen(pos);
313 		nencoded = os_realloc(encoded, encoded_len + len);
314 		if (nencoded == NULL) {
315 			wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
316 				   "blob", *line);
317 			os_free(encoded);
318 			return NULL;
319 		}
320 		encoded = nencoded;
321 		os_memcpy(encoded + encoded_len, pos, len);
322 		encoded_len += len;
323 	}
324 
325 	if (!end || !encoded) {
326 		wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
327 			   "properly", *line);
328 		os_free(encoded);
329 		return NULL;
330 	}
331 
332 	blob = os_zalloc(sizeof(*blob));
333 	if (blob == NULL) {
334 		os_free(encoded);
335 		return NULL;
336 	}
337 	blob->name = os_strdup(name);
338 	blob->data = base64_decode(encoded, encoded_len, &blob->len);
339 	os_free(encoded);
340 
341 	if (blob->name == NULL || blob->data == NULL) {
342 		wpa_config_free_blob(blob);
343 		return NULL;
344 	}
345 
346 	return blob;
347 }
348 
349 
350 static int wpa_config_process_blob(struct wpa_config *config, FILE *f,
351 				   int *line, char *bname)
352 {
353 	char *name_end;
354 	struct wpa_config_blob *blob;
355 
356 	name_end = os_strchr(bname, '=');
357 	if (name_end == NULL) {
358 		wpa_printf(MSG_ERROR, "Line %d: no blob name terminator",
359 			   *line);
360 		return -1;
361 	}
362 	*name_end = '\0';
363 
364 	blob = wpa_config_read_blob(f, line, bname);
365 	if (blob == NULL) {
366 		wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s",
367 			   *line, bname);
368 		return -1;
369 	}
370 	wpa_config_set_blob(config, blob);
371 	return 0;
372 }
373 #endif /* CONFIG_NO_CONFIG_BLOBS */
374 
375 
376 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
377 {
378 	FILE *f;
379 	char buf[512], *pos;
380 	int errors = 0, line = 0;
381 	struct wpa_ssid *ssid, *tail, *head;
382 	struct wpa_cred *cred, *cred_tail, *cred_head;
383 	struct wpa_config *config;
384 	int id = 0;
385 	int cred_id = 0;
386 
387 	if (name == NULL)
388 		return NULL;
389 	if (cfgp)
390 		config = cfgp;
391 	else
392 		config = wpa_config_alloc_empty(NULL, NULL);
393 	if (config == NULL) {
394 		wpa_printf(MSG_ERROR, "Failed to allocate config file "
395 			   "structure");
396 		return NULL;
397 	}
398 	tail = head = config->ssid;
399 	while (tail && tail->next)
400 		tail = tail->next;
401 	cred_tail = cred_head = config->cred;
402 	while (cred_tail && cred_tail->next)
403 		cred_tail = cred_tail->next;
404 
405 	wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
406 	f = fopen(name, "r");
407 	if (f == NULL) {
408 		wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
409 			   "error: %s", name, strerror(errno));
410 		if (config != cfgp)
411 			os_free(config);
412 		return NULL;
413 	}
414 
415 	while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
416 		if (os_strcmp(pos, "network={") == 0) {
417 			ssid = wpa_config_read_network(f, &line, id++);
418 			if (ssid == NULL) {
419 				wpa_printf(MSG_ERROR, "Line %d: failed to "
420 					   "parse network block.", line);
421 				errors++;
422 				continue;
423 			}
424 			if (head == NULL) {
425 				head = tail = ssid;
426 			} else {
427 				tail->next = ssid;
428 				tail = ssid;
429 			}
430 			if (wpa_config_add_prio_network(config, ssid)) {
431 				wpa_printf(MSG_ERROR, "Line %d: failed to add "
432 					   "network block to priority list.",
433 					   line);
434 				errors++;
435 				continue;
436 			}
437 		} else if (os_strcmp(pos, "cred={") == 0) {
438 			cred = wpa_config_read_cred(f, &line, cred_id++);
439 			if (cred == NULL) {
440 				wpa_printf(MSG_ERROR, "Line %d: failed to "
441 					   "parse cred block.", line);
442 				errors++;
443 				continue;
444 			}
445 			if (cred_head == NULL) {
446 				cred_head = cred_tail = cred;
447 			} else {
448 				cred_tail->next = cred;
449 				cred_tail = cred;
450 			}
451 #ifndef CONFIG_NO_CONFIG_BLOBS
452 		} else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
453 			if (wpa_config_process_blob(config, f, &line, pos + 12)
454 			    < 0) {
455 				wpa_printf(MSG_ERROR, "Line %d: failed to "
456 					   "process blob.", line);
457 				errors++;
458 				continue;
459 			}
460 #endif /* CONFIG_NO_CONFIG_BLOBS */
461 		} else if (wpa_config_process_global(config, pos, line) < 0) {
462 			wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
463 				   "line '%s'.", line, pos);
464 			errors++;
465 			continue;
466 		}
467 	}
468 
469 	fclose(f);
470 
471 	config->ssid = head;
472 	wpa_config_debug_dump_networks(config);
473 	config->cred = cred_head;
474 
475 #ifndef WPA_IGNORE_CONFIG_ERRORS
476 	if (errors) {
477 		if (config != cfgp)
478 			wpa_config_free(config);
479 		config = NULL;
480 		head = NULL;
481 	}
482 #endif /* WPA_IGNORE_CONFIG_ERRORS */
483 
484 	return config;
485 }
486 
487 
488 #ifndef CONFIG_NO_CONFIG_WRITE
489 
490 static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
491 {
492 	char *value = wpa_config_get(ssid, field);
493 	if (value == NULL)
494 		return;
495 	fprintf(f, "\t%s=%s\n", field, value);
496 	str_clear_free(value);
497 }
498 
499 
500 static void write_int(FILE *f, const char *field, int value, int def)
501 {
502 	if (value == def)
503 		return;
504 	fprintf(f, "\t%s=%d\n", field, value);
505 }
506 
507 
508 static void write_bssid(FILE *f, struct wpa_ssid *ssid)
509 {
510 	char *value = wpa_config_get(ssid, "bssid");
511 	if (value == NULL)
512 		return;
513 	fprintf(f, "\tbssid=%s\n", value);
514 	os_free(value);
515 }
516 
517 
518 static void write_bssid_hint(FILE *f, struct wpa_ssid *ssid)
519 {
520 	char *value = wpa_config_get(ssid, "bssid_hint");
521 
522 	if (!value)
523 		return;
524 	fprintf(f, "\tbssid_hint=%s\n", value);
525 	os_free(value);
526 }
527 
528 
529 static void write_psk(FILE *f, struct wpa_ssid *ssid)
530 {
531 	char *value;
532 
533 	if (ssid->mem_only_psk)
534 		return;
535 
536 	value = wpa_config_get(ssid, "psk");
537 	if (value == NULL)
538 		return;
539 	fprintf(f, "\tpsk=%s\n", value);
540 	os_free(value);
541 }
542 
543 
544 static void write_proto(FILE *f, struct wpa_ssid *ssid)
545 {
546 	char *value;
547 
548 	if (ssid->proto == DEFAULT_PROTO)
549 		return;
550 
551 	value = wpa_config_get(ssid, "proto");
552 	if (value == NULL)
553 		return;
554 	if (value[0])
555 		fprintf(f, "\tproto=%s\n", value);
556 	os_free(value);
557 }
558 
559 
560 static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
561 {
562 	char *value;
563 
564 	if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
565 		return;
566 
567 	value = wpa_config_get(ssid, "key_mgmt");
568 	if (value == NULL)
569 		return;
570 	if (value[0])
571 		fprintf(f, "\tkey_mgmt=%s\n", value);
572 	os_free(value);
573 }
574 
575 
576 static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
577 {
578 	char *value;
579 
580 	if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
581 		return;
582 
583 	value = wpa_config_get(ssid, "pairwise");
584 	if (value == NULL)
585 		return;
586 	if (value[0])
587 		fprintf(f, "\tpairwise=%s\n", value);
588 	os_free(value);
589 }
590 
591 
592 static void write_group(FILE *f, struct wpa_ssid *ssid)
593 {
594 	char *value;
595 
596 	if (ssid->group_cipher == DEFAULT_GROUP)
597 		return;
598 
599 	value = wpa_config_get(ssid, "group");
600 	if (value == NULL)
601 		return;
602 	if (value[0])
603 		fprintf(f, "\tgroup=%s\n", value);
604 	os_free(value);
605 }
606 
607 
608 static void write_group_mgmt(FILE *f, struct wpa_ssid *ssid)
609 {
610 	char *value;
611 
612 	if (!ssid->group_mgmt_cipher)
613 		return;
614 
615 	value = wpa_config_get(ssid, "group_mgmt");
616 	if (!value)
617 		return;
618 	if (value[0])
619 		fprintf(f, "\tgroup_mgmt=%s\n", value);
620 	os_free(value);
621 }
622 
623 
624 static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
625 {
626 	char *value;
627 
628 	if (ssid->auth_alg == 0)
629 		return;
630 
631 	value = wpa_config_get(ssid, "auth_alg");
632 	if (value == NULL)
633 		return;
634 	if (value[0])
635 		fprintf(f, "\tauth_alg=%s\n", value);
636 	os_free(value);
637 }
638 
639 
640 #ifdef IEEE8021X_EAPOL
641 static void write_eap(FILE *f, struct wpa_ssid *ssid)
642 {
643 	char *value;
644 
645 	value = wpa_config_get(ssid, "eap");
646 	if (value == NULL)
647 		return;
648 
649 	if (value[0])
650 		fprintf(f, "\teap=%s\n", value);
651 	os_free(value);
652 }
653 #endif /* IEEE8021X_EAPOL */
654 
655 
656 static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
657 {
658 	char field[20], *value;
659 	int res;
660 
661 	res = os_snprintf(field, sizeof(field), "wep_key%d", idx);
662 	if (os_snprintf_error(sizeof(field), res))
663 		return;
664 	value = wpa_config_get(ssid, field);
665 	if (value) {
666 		fprintf(f, "\t%s=%s\n", field, value);
667 		os_free(value);
668 	}
669 }
670 
671 
672 #ifdef CONFIG_P2P
673 
674 static void write_go_p2p_dev_addr(FILE *f, struct wpa_ssid *ssid)
675 {
676 	char *value = wpa_config_get(ssid, "go_p2p_dev_addr");
677 	if (value == NULL)
678 		return;
679 	fprintf(f, "\tgo_p2p_dev_addr=%s\n", value);
680 	os_free(value);
681 }
682 
683 static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid)
684 {
685 	char *value = wpa_config_get(ssid, "p2p_client_list");
686 	if (value == NULL)
687 		return;
688 	fprintf(f, "\tp2p_client_list=%s\n", value);
689 	os_free(value);
690 }
691 
692 
693 static void write_psk_list(FILE *f, struct wpa_ssid *ssid)
694 {
695 	struct psk_list_entry *psk;
696 	char hex[32 * 2 + 1];
697 
698 	dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) {
699 		wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk));
700 		fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n",
701 			psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex);
702 	}
703 }
704 
705 #endif /* CONFIG_P2P */
706 
707 
708 #ifdef CONFIG_MACSEC
709 
710 static void write_mka_cak(FILE *f, struct wpa_ssid *ssid)
711 {
712 	char *value;
713 
714 	if (!(ssid->mka_psk_set & MKA_PSK_SET_CAK))
715 		return;
716 
717 	value = wpa_config_get(ssid, "mka_cak");
718 	if (!value)
719 		return;
720 	fprintf(f, "\tmka_cak=%s\n", value);
721 	os_free(value);
722 }
723 
724 
725 static void write_mka_ckn(FILE *f, struct wpa_ssid *ssid)
726 {
727 	char *value;
728 
729 	if (!(ssid->mka_psk_set & MKA_PSK_SET_CKN))
730 		return;
731 
732 	value = wpa_config_get(ssid, "mka_ckn");
733 	if (!value)
734 		return;
735 	fprintf(f, "\tmka_ckn=%s\n", value);
736 	os_free(value);
737 }
738 
739 #endif /* CONFIG_MACSEC */
740 
741 
742 static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
743 {
744 	int i;
745 
746 #define STR(t) write_str(f, #t, ssid)
747 #define INT(t) write_int(f, #t, ssid->t, 0)
748 #define INTe(t) write_int(f, #t, ssid->eap.t, 0)
749 #define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
750 #define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def)
751 
752 	STR(ssid);
753 	INT(scan_ssid);
754 	write_bssid(f, ssid);
755 	write_bssid_hint(f, ssid);
756 	write_str(f, "bssid_blacklist", ssid);
757 	write_str(f, "bssid_whitelist", ssid);
758 	write_psk(f, ssid);
759 	INT(mem_only_psk);
760 	STR(sae_password);
761 	STR(sae_password_id);
762 	write_proto(f, ssid);
763 	write_key_mgmt(f, ssid);
764 	INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD);
765 	write_pairwise(f, ssid);
766 	write_group(f, ssid);
767 	write_group_mgmt(f, ssid);
768 	write_auth_alg(f, ssid);
769 	STR(bgscan);
770 	STR(autoscan);
771 	STR(scan_freq);
772 #ifdef IEEE8021X_EAPOL
773 	write_eap(f, ssid);
774 	STR(identity);
775 	STR(anonymous_identity);
776 	STR(imsi_identity);
777 	STR(password);
778 	STR(ca_cert);
779 	STR(ca_path);
780 	STR(client_cert);
781 	STR(private_key);
782 	STR(private_key_passwd);
783 	STR(dh_file);
784 	STR(subject_match);
785 	STR(check_cert_subject);
786 	STR(altsubject_match);
787 	STR(domain_suffix_match);
788 	STR(domain_match);
789 	STR(ca_cert2);
790 	STR(ca_path2);
791 	STR(client_cert2);
792 	STR(private_key2);
793 	STR(private_key2_passwd);
794 	STR(dh_file2);
795 	STR(subject_match2);
796 	STR(check_cert_subject2);
797 	STR(altsubject_match2);
798 	STR(domain_suffix_match2);
799 	STR(domain_match2);
800 	STR(phase1);
801 	STR(phase2);
802 	STR(pcsc);
803 	STR(pin);
804 	STR(engine_id);
805 	STR(key_id);
806 	STR(cert_id);
807 	STR(ca_cert_id);
808 	STR(key2_id);
809 	STR(pin2);
810 	STR(engine2_id);
811 	STR(cert2_id);
812 	STR(ca_cert2_id);
813 	INTe(engine);
814 	INTe(engine2);
815 	INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
816 	STR(openssl_ciphers);
817 	INTe(erp);
818 #endif /* IEEE8021X_EAPOL */
819 	for (i = 0; i < 4; i++)
820 		write_wep_key(f, i, ssid);
821 	INT(wep_tx_keyidx);
822 	INT(priority);
823 #ifdef IEEE8021X_EAPOL
824 	INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
825 	STR(pac_file);
826 	INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
827 	INTe(ocsp);
828 	INT_DEFe(sim_num, DEFAULT_USER_SELECTED_SIM);
829 #endif /* IEEE8021X_EAPOL */
830 	INT(mode);
831 	INT(no_auto_peer);
832 	INT(frequency);
833 	INT(fixed_freq);
834 #ifdef CONFIG_ACS
835 	INT(acs);
836 #endif /* CONFIG_ACS */
837 	write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
838 	INT(disabled);
839 	INT(mixed_cell);
840 	INT(vht);
841 	INT_DEF(ht, 1);
842 	INT(ht40);
843 	INT_DEF(max_oper_chwidth, DEFAULT_MAX_OPER_CHWIDTH);
844 	INT(vht_center_freq1);
845 	INT(vht_center_freq2);
846 	INT(pbss);
847 	INT(wps_disabled);
848 	INT(fils_dh_group);
849 #ifdef CONFIG_IEEE80211W
850 	write_int(f, "ieee80211w", ssid->ieee80211w,
851 		  MGMT_FRAME_PROTECTION_DEFAULT);
852 #endif /* CONFIG_IEEE80211W */
853 	STR(id_str);
854 #ifdef CONFIG_P2P
855 	write_go_p2p_dev_addr(f, ssid);
856 	write_p2p_client_list(f, ssid);
857 	write_psk_list(f, ssid);
858 #endif /* CONFIG_P2P */
859 	INT(ap_max_inactivity);
860 	INT(dtim_period);
861 	INT(beacon_int);
862 #ifdef CONFIG_MACSEC
863 	INT(macsec_policy);
864 	write_mka_cak(f, ssid);
865 	write_mka_ckn(f, ssid);
866 	INT(macsec_integ_only);
867 	INT(macsec_replay_protect);
868 	INT(macsec_replay_window);
869 	INT(macsec_port);
870 	INT_DEF(mka_priority, DEFAULT_PRIO_NOT_KEY_SERVER);
871 #endif /* CONFIG_MACSEC */
872 #ifdef CONFIG_HS20
873 	INT(update_identifier);
874 	STR(roaming_consortium_selection);
875 #endif /* CONFIG_HS20 */
876 	write_int(f, "mac_addr", ssid->mac_addr, -1);
877 #ifdef CONFIG_MESH
878 	STR(mesh_basic_rates);
879 	INT_DEF(dot11MeshMaxRetries, DEFAULT_MESH_MAX_RETRIES);
880 	INT_DEF(dot11MeshRetryTimeout, DEFAULT_MESH_RETRY_TIMEOUT);
881 	INT_DEF(dot11MeshConfirmTimeout, DEFAULT_MESH_CONFIRM_TIMEOUT);
882 	INT_DEF(dot11MeshHoldingTimeout, DEFAULT_MESH_HOLDING_TIMEOUT);
883 	INT_DEF(mesh_rssi_threshold, DEFAULT_MESH_RSSI_THRESHOLD);
884 #endif /* CONFIG_MESH */
885 	INT(wpa_ptk_rekey);
886 	INT(group_rekey);
887 	INT(ignore_broadcast_ssid);
888 #ifdef CONFIG_DPP
889 	STR(dpp_connector);
890 	STR(dpp_netaccesskey);
891 	INT(dpp_netaccesskey_expiry);
892 	STR(dpp_csign);
893 #endif /* CONFIG_DPP */
894 	INT(owe_group);
895 	INT(owe_only);
896 	INT(multi_ap_backhaul_sta);
897 	INT(ft_eap_pmksa_caching);
898 #ifdef CONFIG_HT_OVERRIDES
899 	INT_DEF(disable_ht, DEFAULT_DISABLE_HT);
900 	INT_DEF(disable_ht40, DEFAULT_DISABLE_HT40);
901 	INT_DEF(disable_sgi, DEFAULT_DISABLE_SGI);
902 	INT_DEF(disable_ldpc, DEFAULT_DISABLE_LDPC);
903 	INT(ht40_intolerant);
904 	INT_DEF(tx_stbc, DEFAULT_TX_STBC);
905 	INT_DEF(rx_stbc, DEFAULT_RX_STBC);
906 	INT_DEF(disable_max_amsdu, DEFAULT_DISABLE_MAX_AMSDU);
907 	INT_DEF(ampdu_factor, DEFAULT_AMPDU_FACTOR);
908 	INT_DEF(ampdu_density, DEFAULT_AMPDU_DENSITY);
909 	STR(ht_mcs);
910 #endif /* CONFIG_HT_OVERRIDES */
911 #ifdef CONFIG_VHT_OVERRIDES
912 	INT(disable_vht);
913 	INT(vht_capa);
914 	INT(vht_capa_mask);
915 	INT_DEF(vht_rx_mcs_nss_1, -1);
916 	INT_DEF(vht_rx_mcs_nss_2, -1);
917 	INT_DEF(vht_rx_mcs_nss_3, -1);
918 	INT_DEF(vht_rx_mcs_nss_4, -1);
919 	INT_DEF(vht_rx_mcs_nss_5, -1);
920 	INT_DEF(vht_rx_mcs_nss_6, -1);
921 	INT_DEF(vht_rx_mcs_nss_7, -1);
922 	INT_DEF(vht_rx_mcs_nss_8, -1);
923 	INT_DEF(vht_tx_mcs_nss_1, -1);
924 	INT_DEF(vht_tx_mcs_nss_2, -1);
925 	INT_DEF(vht_tx_mcs_nss_3, -1);
926 	INT_DEF(vht_tx_mcs_nss_4, -1);
927 	INT_DEF(vht_tx_mcs_nss_5, -1);
928 	INT_DEF(vht_tx_mcs_nss_6, -1);
929 	INT_DEF(vht_tx_mcs_nss_7, -1);
930 	INT_DEF(vht_tx_mcs_nss_8, -1);
931 #endif /* CONFIG_VHT_OVERRIDES */
932 
933 #undef STR
934 #undef INT
935 #undef INT_DEF
936 }
937 
938 
939 static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
940 {
941 	size_t i;
942 
943 	if (cred->priority)
944 		fprintf(f, "\tpriority=%d\n", cred->priority);
945 	if (cred->pcsc)
946 		fprintf(f, "\tpcsc=%d\n", cred->pcsc);
947 	if (cred->realm)
948 		fprintf(f, "\trealm=\"%s\"\n", cred->realm);
949 	if (cred->username)
950 		fprintf(f, "\tusername=\"%s\"\n", cred->username);
951 	if (cred->password && cred->ext_password)
952 		fprintf(f, "\tpassword=ext:%s\n", cred->password);
953 	else if (cred->password)
954 		fprintf(f, "\tpassword=\"%s\"\n", cred->password);
955 	if (cred->ca_cert)
956 		fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert);
957 	if (cred->client_cert)
958 		fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert);
959 	if (cred->private_key)
960 		fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key);
961 	if (cred->private_key_passwd)
962 		fprintf(f, "\tprivate_key_passwd=\"%s\"\n",
963 			cred->private_key_passwd);
964 	if (cred->imsi)
965 		fprintf(f, "\timsi=\"%s\"\n", cred->imsi);
966 	if (cred->milenage)
967 		fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage);
968 	for (i = 0; i < cred->num_domain; i++)
969 		fprintf(f, "\tdomain=\"%s\"\n", cred->domain[i]);
970 	if (cred->domain_suffix_match)
971 		fprintf(f, "\tdomain_suffix_match=\"%s\"\n",
972 			cred->domain_suffix_match);
973 	if (cred->roaming_consortium_len) {
974 		fprintf(f, "\troaming_consortium=");
975 		for (i = 0; i < cred->roaming_consortium_len; i++)
976 			fprintf(f, "%02x", cred->roaming_consortium[i]);
977 		fprintf(f, "\n");
978 	}
979 	if (cred->eap_method) {
980 		const char *name;
981 		name = eap_get_name(cred->eap_method[0].vendor,
982 				    cred->eap_method[0].method);
983 		if (name)
984 			fprintf(f, "\teap=%s\n", name);
985 	}
986 	if (cred->phase1)
987 		fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);
988 	if (cred->phase2)
989 		fprintf(f, "\tphase2=\"%s\"\n", cred->phase2);
990 	if (cred->excluded_ssid) {
991 		size_t j;
992 		for (i = 0; i < cred->num_excluded_ssid; i++) {
993 			struct excluded_ssid *e = &cred->excluded_ssid[i];
994 			fprintf(f, "\texcluded_ssid=");
995 			for (j = 0; j < e->ssid_len; j++)
996 				fprintf(f, "%02x", e->ssid[j]);
997 			fprintf(f, "\n");
998 		}
999 	}
1000 	if (cred->roaming_partner) {
1001 		for (i = 0; i < cred->num_roaming_partner; i++) {
1002 			struct roaming_partner *p = &cred->roaming_partner[i];
1003 			fprintf(f, "\troaming_partner=\"%s,%d,%u,%s\"\n",
1004 				p->fqdn, p->exact_match, p->priority,
1005 				p->country);
1006 		}
1007 	}
1008 	if (cred->update_identifier)
1009 		fprintf(f, "\tupdate_identifier=%d\n", cred->update_identifier);
1010 
1011 	if (cred->provisioning_sp)
1012 		fprintf(f, "\tprovisioning_sp=\"%s\"\n", cred->provisioning_sp);
1013 	if (cred->sp_priority)
1014 		fprintf(f, "\tsp_priority=%d\n", cred->sp_priority);
1015 
1016 	if (cred->min_dl_bandwidth_home)
1017 		fprintf(f, "\tmin_dl_bandwidth_home=%u\n",
1018 			cred->min_dl_bandwidth_home);
1019 	if (cred->min_ul_bandwidth_home)
1020 		fprintf(f, "\tmin_ul_bandwidth_home=%u\n",
1021 			cred->min_ul_bandwidth_home);
1022 	if (cred->min_dl_bandwidth_roaming)
1023 		fprintf(f, "\tmin_dl_bandwidth_roaming=%u\n",
1024 			cred->min_dl_bandwidth_roaming);
1025 	if (cred->min_ul_bandwidth_roaming)
1026 		fprintf(f, "\tmin_ul_bandwidth_roaming=%u\n",
1027 			cred->min_ul_bandwidth_roaming);
1028 
1029 	if (cred->max_bss_load)
1030 		fprintf(f, "\tmax_bss_load=%u\n",
1031 			cred->max_bss_load);
1032 
1033 	if (cred->ocsp)
1034 		fprintf(f, "\tocsp=%d\n", cred->ocsp);
1035 
1036 	if (cred->num_req_conn_capab) {
1037 		for (i = 0; i < cred->num_req_conn_capab; i++) {
1038 			int *ports;
1039 
1040 			fprintf(f, "\treq_conn_capab=%u",
1041 				cred->req_conn_capab_proto[i]);
1042 			ports = cred->req_conn_capab_port[i];
1043 			if (ports) {
1044 				int j;
1045 				for (j = 0; ports[j] != -1; j++) {
1046 					fprintf(f, "%s%d", j > 0 ? "," : ":",
1047 						ports[j]);
1048 				}
1049 			}
1050 			fprintf(f, "\n");
1051 		}
1052 	}
1053 
1054 	if (cred->required_roaming_consortium_len) {
1055 		fprintf(f, "\trequired_roaming_consortium=");
1056 		for (i = 0; i < cred->required_roaming_consortium_len; i++)
1057 			fprintf(f, "%02x",
1058 				cred->required_roaming_consortium[i]);
1059 		fprintf(f, "\n");
1060 	}
1061 
1062 	if (cred->num_roaming_consortiums) {
1063 		size_t j;
1064 
1065 		fprintf(f, "\troaming_consortiums=\"");
1066 		for (i = 0; i < cred->num_roaming_consortiums; i++) {
1067 			if (i > 0)
1068 				fprintf(f, ",");
1069 			for (j = 0; j < cred->roaming_consortiums_len[i]; j++)
1070 				fprintf(f, "%02x",
1071 					cred->roaming_consortiums[i][j]);
1072 		}
1073 		fprintf(f, "\"\n");
1074 	}
1075 
1076 	if (cred->sim_num != DEFAULT_USER_SELECTED_SIM)
1077 		fprintf(f, "\tsim_num=%d\n", cred->sim_num);
1078 }
1079 
1080 
1081 #ifndef CONFIG_NO_CONFIG_BLOBS
1082 static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
1083 {
1084 	unsigned char *encoded;
1085 
1086 	encoded = base64_encode(blob->data, blob->len, NULL);
1087 	if (encoded == NULL)
1088 		return -1;
1089 
1090 	fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
1091 	os_free(encoded);
1092 	return 0;
1093 }
1094 #endif /* CONFIG_NO_CONFIG_BLOBS */
1095 
1096 
1097 static void write_global_bin(FILE *f, const char *field,
1098 			     const struct wpabuf *val)
1099 {
1100 	size_t i;
1101 	const u8 *pos;
1102 
1103 	if (val == NULL)
1104 		return;
1105 
1106 	fprintf(f, "%s=", field);
1107 	pos = wpabuf_head(val);
1108 	for (i = 0; i < wpabuf_len(val); i++)
1109 		fprintf(f, "%02X", *pos++);
1110 	fprintf(f, "\n");
1111 }
1112 
1113 
1114 static void wpa_config_write_global(FILE *f, struct wpa_config *config)
1115 {
1116 #ifdef CONFIG_CTRL_IFACE
1117 	if (config->ctrl_interface)
1118 		fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
1119 	if (config->ctrl_interface_group)
1120 		fprintf(f, "ctrl_interface_group=%s\n",
1121 			config->ctrl_interface_group);
1122 #endif /* CONFIG_CTRL_IFACE */
1123 	if (config->eapol_version != DEFAULT_EAPOL_VERSION)
1124 		fprintf(f, "eapol_version=%d\n", config->eapol_version);
1125 	if (config->ap_scan != DEFAULT_AP_SCAN)
1126 		fprintf(f, "ap_scan=%d\n", config->ap_scan);
1127 	if (config->disable_scan_offload)
1128 		fprintf(f, "disable_scan_offload=%d\n",
1129 			config->disable_scan_offload);
1130 	if (config->fast_reauth != DEFAULT_FAST_REAUTH)
1131 		fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
1132 	if (config->opensc_engine_path)
1133 		fprintf(f, "opensc_engine_path=%s\n",
1134 			config->opensc_engine_path);
1135 	if (config->pkcs11_engine_path)
1136 		fprintf(f, "pkcs11_engine_path=%s\n",
1137 			config->pkcs11_engine_path);
1138 	if (config->pkcs11_module_path)
1139 		fprintf(f, "pkcs11_module_path=%s\n",
1140 			config->pkcs11_module_path);
1141 	if (config->openssl_ciphers)
1142 		fprintf(f, "openssl_ciphers=%s\n", config->openssl_ciphers);
1143 	if (config->pcsc_reader)
1144 		fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader);
1145 	if (config->pcsc_pin)
1146 		fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin);
1147 	if (config->driver_param)
1148 		fprintf(f, "driver_param=%s\n", config->driver_param);
1149 	if (config->dot11RSNAConfigPMKLifetime)
1150 		fprintf(f, "dot11RSNAConfigPMKLifetime=%u\n",
1151 			config->dot11RSNAConfigPMKLifetime);
1152 	if (config->dot11RSNAConfigPMKReauthThreshold)
1153 		fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%u\n",
1154 			config->dot11RSNAConfigPMKReauthThreshold);
1155 	if (config->dot11RSNAConfigSATimeout)
1156 		fprintf(f, "dot11RSNAConfigSATimeout=%u\n",
1157 			config->dot11RSNAConfigSATimeout);
1158 	if (config->update_config)
1159 		fprintf(f, "update_config=%d\n", config->update_config);
1160 #ifdef CONFIG_WPS
1161 	if (!is_nil_uuid(config->uuid)) {
1162 		char buf[40];
1163 		uuid_bin2str(config->uuid, buf, sizeof(buf));
1164 		fprintf(f, "uuid=%s\n", buf);
1165 	}
1166 	if (config->auto_uuid)
1167 		fprintf(f, "auto_uuid=%d\n", config->auto_uuid);
1168 	if (config->device_name)
1169 		fprintf(f, "device_name=%s\n", config->device_name);
1170 	if (config->manufacturer)
1171 		fprintf(f, "manufacturer=%s\n", config->manufacturer);
1172 	if (config->model_name)
1173 		fprintf(f, "model_name=%s\n", config->model_name);
1174 	if (config->model_number)
1175 		fprintf(f, "model_number=%s\n", config->model_number);
1176 	if (config->serial_number)
1177 		fprintf(f, "serial_number=%s\n", config->serial_number);
1178 	{
1179 		char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
1180 		buf = wps_dev_type_bin2str(config->device_type,
1181 					   _buf, sizeof(_buf));
1182 		if (os_strcmp(buf, "0-00000000-0") != 0)
1183 			fprintf(f, "device_type=%s\n", buf);
1184 	}
1185 	if (WPA_GET_BE32(config->os_version))
1186 		fprintf(f, "os_version=%08x\n",
1187 			WPA_GET_BE32(config->os_version));
1188 	if (config->config_methods)
1189 		fprintf(f, "config_methods=%s\n", config->config_methods);
1190 	if (config->wps_cred_processing)
1191 		fprintf(f, "wps_cred_processing=%d\n",
1192 			config->wps_cred_processing);
1193 	if (config->wps_cred_add_sae)
1194 		fprintf(f, "wps_cred_add_sae=%d\n",
1195 			config->wps_cred_add_sae);
1196 	if (config->wps_vendor_ext_m1) {
1197 		int i, len = wpabuf_len(config->wps_vendor_ext_m1);
1198 		const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1);
1199 		if (len > 0) {
1200 			fprintf(f, "wps_vendor_ext_m1=");
1201 			for (i = 0; i < len; i++)
1202 				fprintf(f, "%02x", *p++);
1203 			fprintf(f, "\n");
1204 		}
1205 	}
1206 #endif /* CONFIG_WPS */
1207 #ifdef CONFIG_P2P
1208 	{
1209 		int i;
1210 		char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
1211 
1212 		for (i = 0; i < config->num_sec_device_types; i++) {
1213 			buf = wps_dev_type_bin2str(config->sec_device_type[i],
1214 						   _buf, sizeof(_buf));
1215 			if (buf)
1216 				fprintf(f, "sec_device_type=%s\n", buf);
1217 		}
1218 	}
1219 	if (config->p2p_listen_reg_class)
1220 		fprintf(f, "p2p_listen_reg_class=%d\n",
1221 			config->p2p_listen_reg_class);
1222 	if (config->p2p_listen_channel)
1223 		fprintf(f, "p2p_listen_channel=%d\n",
1224 			config->p2p_listen_channel);
1225 	if (config->p2p_oper_reg_class)
1226 		fprintf(f, "p2p_oper_reg_class=%d\n",
1227 			config->p2p_oper_reg_class);
1228 	if (config->p2p_oper_channel)
1229 		fprintf(f, "p2p_oper_channel=%d\n", config->p2p_oper_channel);
1230 	if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
1231 		fprintf(f, "p2p_go_intent=%d\n", config->p2p_go_intent);
1232 	if (config->p2p_ssid_postfix)
1233 		fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix);
1234 	if (config->persistent_reconnect)
1235 		fprintf(f, "persistent_reconnect=%d\n",
1236 			config->persistent_reconnect);
1237 	if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
1238 		fprintf(f, "p2p_intra_bss=%d\n", config->p2p_intra_bss);
1239 	if (config->p2p_group_idle)
1240 		fprintf(f, "p2p_group_idle=%d\n", config->p2p_group_idle);
1241 	if (config->p2p_passphrase_len)
1242 		fprintf(f, "p2p_passphrase_len=%u\n",
1243 			config->p2p_passphrase_len);
1244 	if (config->p2p_pref_chan) {
1245 		unsigned int i;
1246 		fprintf(f, "p2p_pref_chan=");
1247 		for (i = 0; i < config->num_p2p_pref_chan; i++) {
1248 			fprintf(f, "%s%u:%u", i > 0 ? "," : "",
1249 				config->p2p_pref_chan[i].op_class,
1250 				config->p2p_pref_chan[i].chan);
1251 		}
1252 		fprintf(f, "\n");
1253 	}
1254 	if (config->p2p_no_go_freq.num) {
1255 		char *val = freq_range_list_str(&config->p2p_no_go_freq);
1256 		if (val) {
1257 			fprintf(f, "p2p_no_go_freq=%s\n", val);
1258 			os_free(val);
1259 		}
1260 	}
1261 	if (config->p2p_add_cli_chan)
1262 		fprintf(f, "p2p_add_cli_chan=%d\n", config->p2p_add_cli_chan);
1263 	if (config->p2p_optimize_listen_chan !=
1264 	    DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN)
1265 		fprintf(f, "p2p_optimize_listen_chan=%d\n",
1266 			config->p2p_optimize_listen_chan);
1267 	if (config->p2p_go_ht40)
1268 		fprintf(f, "p2p_go_ht40=%d\n", config->p2p_go_ht40);
1269 	if (config->p2p_go_vht)
1270 		fprintf(f, "p2p_go_vht=%d\n", config->p2p_go_vht);
1271 	if (config->p2p_go_he)
1272 		fprintf(f, "p2p_go_he=%d\n", config->p2p_go_he);
1273 	if (config->p2p_go_ctwindow != DEFAULT_P2P_GO_CTWINDOW)
1274 		fprintf(f, "p2p_go_ctwindow=%d\n", config->p2p_go_ctwindow);
1275 	if (config->p2p_disabled)
1276 		fprintf(f, "p2p_disabled=%d\n", config->p2p_disabled);
1277 	if (config->p2p_no_group_iface)
1278 		fprintf(f, "p2p_no_group_iface=%d\n",
1279 			config->p2p_no_group_iface);
1280 	if (config->p2p_ignore_shared_freq)
1281 		fprintf(f, "p2p_ignore_shared_freq=%d\n",
1282 			config->p2p_ignore_shared_freq);
1283 	if (config->p2p_cli_probe)
1284 		fprintf(f, "p2p_cli_probe=%d\n", config->p2p_cli_probe);
1285 	if (config->p2p_go_freq_change_policy != DEFAULT_P2P_GO_FREQ_MOVE)
1286 		fprintf(f, "p2p_go_freq_change_policy=%u\n",
1287 			config->p2p_go_freq_change_policy);
1288 	if (WPA_GET_BE32(config->ip_addr_go))
1289 		fprintf(f, "ip_addr_go=%u.%u.%u.%u\n",
1290 			config->ip_addr_go[0], config->ip_addr_go[1],
1291 			config->ip_addr_go[2], config->ip_addr_go[3]);
1292 	if (WPA_GET_BE32(config->ip_addr_mask))
1293 		fprintf(f, "ip_addr_mask=%u.%u.%u.%u\n",
1294 			config->ip_addr_mask[0], config->ip_addr_mask[1],
1295 			config->ip_addr_mask[2], config->ip_addr_mask[3]);
1296 	if (WPA_GET_BE32(config->ip_addr_start))
1297 		fprintf(f, "ip_addr_start=%u.%u.%u.%u\n",
1298 			config->ip_addr_start[0], config->ip_addr_start[1],
1299 			config->ip_addr_start[2], config->ip_addr_start[3]);
1300 	if (WPA_GET_BE32(config->ip_addr_end))
1301 		fprintf(f, "ip_addr_end=%u.%u.%u.%u\n",
1302 			config->ip_addr_end[0], config->ip_addr_end[1],
1303 			config->ip_addr_end[2], config->ip_addr_end[3]);
1304 #endif /* CONFIG_P2P */
1305 	if (config->country[0] && config->country[1]) {
1306 		fprintf(f, "country=%c%c\n",
1307 			config->country[0], config->country[1]);
1308 	}
1309 	if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
1310 		fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
1311 	if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
1312 		fprintf(f, "bss_expiration_age=%u\n",
1313 			config->bss_expiration_age);
1314 	if (config->bss_expiration_scan_count !=
1315 	    DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
1316 		fprintf(f, "bss_expiration_scan_count=%u\n",
1317 			config->bss_expiration_scan_count);
1318 	if (config->filter_ssids)
1319 		fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
1320 	if (config->filter_rssi)
1321 		fprintf(f, "filter_rssi=%d\n", config->filter_rssi);
1322 	if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
1323 		fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
1324 	if (config->ap_isolate != DEFAULT_AP_ISOLATE)
1325 		fprintf(f, "ap_isolate=%u\n", config->ap_isolate);
1326 	if (config->disassoc_low_ack)
1327 		fprintf(f, "disassoc_low_ack=%d\n", config->disassoc_low_ack);
1328 #ifdef CONFIG_HS20
1329 	if (config->hs20)
1330 		fprintf(f, "hs20=1\n");
1331 #endif /* CONFIG_HS20 */
1332 #ifdef CONFIG_INTERWORKING
1333 	if (config->interworking)
1334 		fprintf(f, "interworking=%d\n", config->interworking);
1335 	if (!is_zero_ether_addr(config->hessid))
1336 		fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
1337 	if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
1338 		fprintf(f, "access_network_type=%d\n",
1339 			config->access_network_type);
1340 	if (config->go_interworking)
1341 		fprintf(f, "go_interworking=%d\n", config->go_interworking);
1342 	if (config->go_access_network_type)
1343 		fprintf(f, "go_access_network_type=%d\n",
1344 			config->go_access_network_type);
1345 	if (config->go_internet)
1346 		fprintf(f, "go_internet=%d\n", config->go_internet);
1347 	if (config->go_venue_group)
1348 		fprintf(f, "go_venue_group=%d\n", config->go_venue_group);
1349 	if (config->go_venue_type)
1350 		fprintf(f, "go_venue_type=%d\n", config->go_venue_type);
1351 #endif /* CONFIG_INTERWORKING */
1352 	if (config->pbc_in_m1)
1353 		fprintf(f, "pbc_in_m1=%d\n", config->pbc_in_m1);
1354 	if (config->wps_nfc_pw_from_config) {
1355 		if (config->wps_nfc_dev_pw_id)
1356 			fprintf(f, "wps_nfc_dev_pw_id=%d\n",
1357 				config->wps_nfc_dev_pw_id);
1358 		write_global_bin(f, "wps_nfc_dh_pubkey",
1359 				 config->wps_nfc_dh_pubkey);
1360 		write_global_bin(f, "wps_nfc_dh_privkey",
1361 				 config->wps_nfc_dh_privkey);
1362 		write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
1363 	}
1364 
1365 	if (config->ext_password_backend)
1366 		fprintf(f, "ext_password_backend=%s\n",
1367 			config->ext_password_backend);
1368 	if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
1369 		fprintf(f, "p2p_go_max_inactivity=%d\n",
1370 			config->p2p_go_max_inactivity);
1371 	if (config->auto_interworking)
1372 		fprintf(f, "auto_interworking=%d\n",
1373 			config->auto_interworking);
1374 	if (config->okc)
1375 		fprintf(f, "okc=%d\n", config->okc);
1376 	if (config->pmf)
1377 		fprintf(f, "pmf=%d\n", config->pmf);
1378 	if (config->dtim_period)
1379 		fprintf(f, "dtim_period=%d\n", config->dtim_period);
1380 	if (config->beacon_int)
1381 		fprintf(f, "beacon_int=%d\n", config->beacon_int);
1382 
1383 	if (config->sae_groups) {
1384 		int i;
1385 		fprintf(f, "sae_groups=");
1386 		for (i = 0; config->sae_groups[i] > 0; i++) {
1387 			fprintf(f, "%s%d", i > 0 ? " " : "",
1388 				config->sae_groups[i]);
1389 		}
1390 		fprintf(f, "\n");
1391 	}
1392 
1393 	if (config->ap_vendor_elements) {
1394 		int i, len = wpabuf_len(config->ap_vendor_elements);
1395 		const u8 *p = wpabuf_head_u8(config->ap_vendor_elements);
1396 		if (len > 0) {
1397 			fprintf(f, "ap_vendor_elements=");
1398 			for (i = 0; i < len; i++)
1399 				fprintf(f, "%02x", *p++);
1400 			fprintf(f, "\n");
1401 		}
1402 	}
1403 
1404 	if (config->ignore_old_scan_res)
1405 		fprintf(f, "ignore_old_scan_res=%d\n",
1406 			config->ignore_old_scan_res);
1407 
1408 	if (config->freq_list && config->freq_list[0]) {
1409 		int i;
1410 		fprintf(f, "freq_list=");
1411 		for (i = 0; config->freq_list[i]; i++) {
1412 			fprintf(f, "%s%d", i > 0 ? " " : "",
1413 				config->freq_list[i]);
1414 		}
1415 		fprintf(f, "\n");
1416 	}
1417 	if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
1418 		fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
1419 
1420 	if (config->sched_scan_interval)
1421 		fprintf(f, "sched_scan_interval=%u\n",
1422 			config->sched_scan_interval);
1423 
1424 	if (config->sched_scan_start_delay)
1425 		fprintf(f, "sched_scan_start_delay=%u\n",
1426 			config->sched_scan_start_delay);
1427 
1428 	if (config->external_sim)
1429 		fprintf(f, "external_sim=%d\n", config->external_sim);
1430 
1431 	if (config->tdls_external_control)
1432 		fprintf(f, "tdls_external_control=%d\n",
1433 			config->tdls_external_control);
1434 
1435 	if (config->wowlan_triggers)
1436 		fprintf(f, "wowlan_triggers=%s\n",
1437 			config->wowlan_triggers);
1438 
1439 	if (config->bgscan)
1440 		fprintf(f, "bgscan=\"%s\"\n", config->bgscan);
1441 
1442 	if (config->autoscan)
1443 		fprintf(f, "autoscan=%s\n", config->autoscan);
1444 
1445 	if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
1446 		fprintf(f, "p2p_search_delay=%u\n",
1447 			config->p2p_search_delay);
1448 
1449 	if (config->mac_addr)
1450 		fprintf(f, "mac_addr=%d\n", config->mac_addr);
1451 
1452 	if (config->rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
1453 		fprintf(f, "rand_addr_lifetime=%u\n",
1454 			config->rand_addr_lifetime);
1455 
1456 	if (config->preassoc_mac_addr)
1457 		fprintf(f, "preassoc_mac_addr=%d\n", config->preassoc_mac_addr);
1458 
1459 	if (config->key_mgmt_offload != DEFAULT_KEY_MGMT_OFFLOAD)
1460 		fprintf(f, "key_mgmt_offload=%d\n", config->key_mgmt_offload);
1461 
1462 	if (config->user_mpm != DEFAULT_USER_MPM)
1463 		fprintf(f, "user_mpm=%d\n", config->user_mpm);
1464 
1465 	if (config->max_peer_links != DEFAULT_MAX_PEER_LINKS)
1466 		fprintf(f, "max_peer_links=%d\n", config->max_peer_links);
1467 
1468 	if (config->cert_in_cb != DEFAULT_CERT_IN_CB)
1469 		fprintf(f, "cert_in_cb=%d\n", config->cert_in_cb);
1470 
1471 	if (config->mesh_max_inactivity != DEFAULT_MESH_MAX_INACTIVITY)
1472 		fprintf(f, "mesh_max_inactivity=%d\n",
1473 			config->mesh_max_inactivity);
1474 
1475 	if (config->dot11RSNASAERetransPeriod !=
1476 	    DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD)
1477 		fprintf(f, "dot11RSNASAERetransPeriod=%d\n",
1478 			config->dot11RSNASAERetransPeriod);
1479 
1480 	if (config->passive_scan)
1481 		fprintf(f, "passive_scan=%d\n", config->passive_scan);
1482 
1483 	if (config->reassoc_same_bss_optim)
1484 		fprintf(f, "reassoc_same_bss_optim=%d\n",
1485 			config->reassoc_same_bss_optim);
1486 
1487 	if (config->wps_priority)
1488 		fprintf(f, "wps_priority=%d\n", config->wps_priority);
1489 
1490 	if (config->wpa_rsc_relaxation != DEFAULT_WPA_RSC_RELAXATION)
1491 		fprintf(f, "wpa_rsc_relaxation=%d\n",
1492 			config->wpa_rsc_relaxation);
1493 
1494 	if (config->sched_scan_plans)
1495 		fprintf(f, "sched_scan_plans=%s\n", config->sched_scan_plans);
1496 
1497 #ifdef CONFIG_MBO
1498 	if (config->non_pref_chan)
1499 		fprintf(f, "non_pref_chan=%s\n", config->non_pref_chan);
1500 	if (config->mbo_cell_capa != DEFAULT_MBO_CELL_CAPA)
1501 		fprintf(f, "mbo_cell_capa=%u\n", config->mbo_cell_capa);
1502 	if (config->disassoc_imminent_rssi_threshold !=
1503 	    DEFAULT_DISASSOC_IMMINENT_RSSI_THRESHOLD)
1504 		fprintf(f, "disassoc_imminent_rssi_threshold=%d\n",
1505 			config->disassoc_imminent_rssi_threshold);
1506 	if (config->oce != DEFAULT_OCE_SUPPORT)
1507 		fprintf(f, "oce=%u\n", config->oce);
1508 #endif /* CONFIG_MBO */
1509 
1510 	if (config->gas_address3)
1511 		fprintf(f, "gas_address3=%d\n", config->gas_address3);
1512 
1513 	if (config->ftm_responder)
1514 		fprintf(f, "ftm_responder=%d\n", config->ftm_responder);
1515 	if (config->ftm_initiator)
1516 		fprintf(f, "ftm_initiator=%d\n", config->ftm_initiator);
1517 
1518 	if (config->osu_dir)
1519 		fprintf(f, "osu_dir=%s\n", config->osu_dir);
1520 
1521 	if (config->fst_group_id)
1522 		fprintf(f, "fst_group_id=%s\n", config->fst_group_id);
1523 	if (config->fst_priority)
1524 		fprintf(f, "fst_priority=%d\n", config->fst_priority);
1525 	if (config->fst_llt)
1526 		fprintf(f, "fst_llt=%d\n", config->fst_llt);
1527 
1528 	if (config->gas_rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
1529 		fprintf(f, "gas_rand_addr_lifetime=%u\n",
1530 			config->gas_rand_addr_lifetime);
1531 	if (config->gas_rand_mac_addr)
1532 		fprintf(f, "gas_rand_mac_addr=%d\n", config->gas_rand_mac_addr);
1533 	if (config->dpp_config_processing)
1534 		fprintf(f, "dpp_config_processing=%d\n",
1535 			config->dpp_config_processing);
1536 	if (config->coloc_intf_reporting)
1537 		fprintf(f, "coloc_intf_reporting=%d\n",
1538 			config->coloc_intf_reporting);
1539 	if (config->p2p_device_random_mac_addr)
1540 		fprintf(f, "p2p_device_random_mac_addr=%d\n",
1541 			config->p2p_device_random_mac_addr);
1542 	if (!is_zero_ether_addr(config->p2p_device_persistent_mac_addr))
1543 		fprintf(f, "p2p_device_persistent_mac_addr=" MACSTR "\n",
1544 			MAC2STR(config->p2p_device_persistent_mac_addr));
1545 	if (config->p2p_interface_random_mac_addr)
1546 		fprintf(f, "p2p_interface_random_mac_addr=%d\n",
1547 			config->p2p_interface_random_mac_addr);
1548 	if (config->disable_btm)
1549 		fprintf(f, "disable_btm=1\n");
1550 }
1551 
1552 #endif /* CONFIG_NO_CONFIG_WRITE */
1553 
1554 
1555 int wpa_config_write(const char *name, struct wpa_config *config)
1556 {
1557 #ifndef CONFIG_NO_CONFIG_WRITE
1558 	FILE *f;
1559 	struct wpa_ssid *ssid;
1560 	struct wpa_cred *cred;
1561 #ifndef CONFIG_NO_CONFIG_BLOBS
1562 	struct wpa_config_blob *blob;
1563 #endif /* CONFIG_NO_CONFIG_BLOBS */
1564 	int ret = 0;
1565 	const char *orig_name = name;
1566 	int tmp_len = os_strlen(name) + 5; /* allow space for .tmp suffix */
1567 	char *tmp_name = os_malloc(tmp_len);
1568 
1569 	if (tmp_name) {
1570 		os_snprintf(tmp_name, tmp_len, "%s.tmp", name);
1571 		name = tmp_name;
1572 	}
1573 
1574 	wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
1575 
1576 	f = fopen(name, "w");
1577 	if (f == NULL) {
1578 		wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
1579 		os_free(tmp_name);
1580 		return -1;
1581 	}
1582 
1583 	wpa_config_write_global(f, config);
1584 
1585 	for (cred = config->cred; cred; cred = cred->next) {
1586 		if (cred->temporary)
1587 			continue;
1588 		fprintf(f, "\ncred={\n");
1589 		wpa_config_write_cred(f, cred);
1590 		fprintf(f, "}\n");
1591 	}
1592 
1593 	for (ssid = config->ssid; ssid; ssid = ssid->next) {
1594 		if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
1595 			continue; /* do not save temporary networks */
1596 		if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
1597 		    !ssid->passphrase)
1598 			continue; /* do not save invalid network */
1599 		fprintf(f, "\nnetwork={\n");
1600 		wpa_config_write_network(f, ssid);
1601 		fprintf(f, "}\n");
1602 	}
1603 
1604 #ifndef CONFIG_NO_CONFIG_BLOBS
1605 	for (blob = config->blobs; blob; blob = blob->next) {
1606 		ret = wpa_config_write_blob(f, blob);
1607 		if (ret)
1608 			break;
1609 	}
1610 #endif /* CONFIG_NO_CONFIG_BLOBS */
1611 
1612 	os_fdatasync(f);
1613 
1614 	fclose(f);
1615 
1616 	if (tmp_name) {
1617 		int chmod_ret = 0;
1618 
1619 #ifdef ANDROID
1620 		chmod_ret = chmod(tmp_name,
1621 				  S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
1622 #endif /* ANDROID */
1623 		if (chmod_ret != 0 || rename(tmp_name, orig_name) != 0)
1624 			ret = -1;
1625 
1626 		os_free(tmp_name);
1627 	}
1628 
1629 	wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
1630 		   orig_name, ret ? "un" : "");
1631 	return ret;
1632 #else /* CONFIG_NO_CONFIG_WRITE */
1633 	return -1;
1634 #endif /* CONFIG_NO_CONFIG_WRITE */
1635 }
1636