xref: /freebsd/contrib/wpa/wpa_supplicant/config_file.c (revision a0ee8cc636cd5c2374ec44ca71226564ea0bca95) 
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 "p2p/p2p.h"
23 #include "eap_peer/eap_methods.h"
24 #include "eap_peer/eap.h"
25 
26 
27 static int newline_terminated(const char *buf, size_t buflen)
28 {
29 	size_t len = os_strlen(buf);
30 	if (len == 0)
31 		return 0;
32 	if (len == buflen - 1 && buf[buflen - 1] != '\r' &&
33 	    buf[len - 1] != '\n')
34 		return 0;
35 	return 1;
36 }
37 
38 
39 static void skip_line_end(FILE *stream)
40 {
41 	char buf[100];
42 	while (fgets(buf, sizeof(buf), stream)) {
43 		buf[sizeof(buf) - 1] = '\0';
44 		if (newline_terminated(buf, sizeof(buf)))
45 			return;
46 	}
47 }
48 
49 
50 /**
51  * wpa_config_get_line - Read the next configuration file line
52  * @s: Buffer for the line
53  * @size: The buffer length
54  * @stream: File stream to read from
55  * @line: Pointer to a variable storing the file line number
56  * @_pos: Buffer for the pointer to the beginning of data on the text line or
57  * %NULL if not needed (returned value used instead)
58  * Returns: Pointer to the beginning of data on the text line or %NULL if no
59  * more text lines are available.
60  *
61  * This function reads the next non-empty line from the configuration file and
62  * removes comments. The returned string is guaranteed to be null-terminated.
63  */
64 static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
65 				  char **_pos)
66 {
67 	char *pos, *end, *sstart;
68 
69 	while (fgets(s, size, stream)) {
70 		(*line)++;
71 		s[size - 1] = '\0';
72 		if (!newline_terminated(s, size)) {
73 			/*
74 			 * The line was truncated - skip rest of it to avoid
75 			 * confusing error messages.
76 			 */
77 			wpa_printf(MSG_INFO, "Long line in configuration file "
78 				   "truncated");
79 			skip_line_end(stream);
80 		}
81 		pos = s;
82 
83 		/* Skip white space from the beginning of line. */
84 		while (*pos == ' ' || *pos == '\t' || *pos == '\r')
85 			pos++;
86 
87 		/* Skip comment lines and empty lines */
88 		if (*pos == '#' || *pos == '\n' || *pos == '\0')
89 			continue;
90 
91 		/*
92 		 * Remove # comments unless they are within a double quoted
93 		 * string.
94 		 */
95 		sstart = os_strchr(pos, '"');
96 		if (sstart)
97 			sstart = os_strrchr(sstart + 1, '"');
98 		if (!sstart)
99 			sstart = pos;
100 		end = os_strchr(sstart, '#');
101 		if (end)
102 			*end-- = '\0';
103 		else
104 			end = pos + os_strlen(pos) - 1;
105 
106 		/* Remove trailing white space. */
107 		while (end > pos &&
108 		       (*end == '\n' || *end == ' ' || *end == '\t' ||
109 			*end == '\r'))
110 			*end-- = '\0';
111 
112 		if (*pos == '\0')
113 			continue;
114 
115 		if (_pos)
116 			*_pos = pos;
117 		return pos;
118 	}
119 
120 	if (_pos)
121 		*_pos = NULL;
122 	return NULL;
123 }
124 
125 
126 static int wpa_config_validate_network(struct wpa_ssid *ssid, int line)
127 {
128 	int errors = 0;
129 
130 	if (ssid->passphrase) {
131 		if (ssid->psk_set) {
132 			wpa_printf(MSG_ERROR, "Line %d: both PSK and "
133 				   "passphrase configured.", line);
134 			errors++;
135 		}
136 		wpa_config_update_psk(ssid);
137 	}
138 
139 	if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
140 	    !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
141 	    !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
142 		/* Group cipher cannot be stronger than the pairwise cipher. */
143 		wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher"
144 			   " list since it was not allowed for pairwise "
145 			   "cipher", line);
146 		ssid->group_cipher &= ~WPA_CIPHER_CCMP;
147 	}
148 
149 	if (ssid->mode == WPAS_MODE_MESH &&
150 	    (ssid->key_mgmt != WPA_KEY_MGMT_NONE &&
151 	    ssid->key_mgmt != WPA_KEY_MGMT_SAE)) {
152 		wpa_printf(MSG_ERROR,
153 			   "Line %d: key_mgmt for mesh network should be open or SAE",
154 			   line);
155 		errors++;
156 	}
157 
158 	return errors;
159 }
160 
161 
162 static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id)
163 {
164 	struct wpa_ssid *ssid;
165 	int errors = 0, end = 0;
166 	char buf[2000], *pos, *pos2;
167 
168 	wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block",
169 		   *line);
170 	ssid = os_zalloc(sizeof(*ssid));
171 	if (ssid == NULL)
172 		return NULL;
173 	dl_list_init(&ssid->psk_list);
174 	ssid->id = id;
175 
176 	wpa_config_set_network_defaults(ssid);
177 
178 	while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
179 		if (os_strcmp(pos, "}") == 0) {
180 			end = 1;
181 			break;
182 		}
183 
184 		pos2 = os_strchr(pos, '=');
185 		if (pos2 == NULL) {
186 			wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
187 				   "'%s'.", *line, pos);
188 			errors++;
189 			continue;
190 		}
191 
192 		*pos2++ = '\0';
193 		if (*pos2 == '"') {
194 			if (os_strchr(pos2 + 1, '"') == NULL) {
195 				wpa_printf(MSG_ERROR, "Line %d: invalid "
196 					   "quotation '%s'.", *line, pos2);
197 				errors++;
198 				continue;
199 			}
200 		}
201 
202 		if (wpa_config_set(ssid, pos, pos2, *line) < 0)
203 			errors++;
204 	}
205 
206 	if (!end) {
207 		wpa_printf(MSG_ERROR, "Line %d: network block was not "
208 			   "terminated properly.", *line);
209 		errors++;
210 	}
211 
212 	errors += wpa_config_validate_network(ssid, *line);
213 
214 	if (errors) {
215 		wpa_config_free_ssid(ssid);
216 		ssid = NULL;
217 	}
218 
219 	return ssid;
220 }
221 
222 
223 static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id)
224 {
225 	struct wpa_cred *cred;
226 	int errors = 0, end = 0;
227 	char buf[256], *pos, *pos2;
228 
229 	wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line);
230 	cred = os_zalloc(sizeof(*cred));
231 	if (cred == NULL)
232 		return NULL;
233 	cred->id = id;
234 	cred->sim_num = DEFAULT_USER_SELECTED_SIM;
235 
236 	while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
237 		if (os_strcmp(pos, "}") == 0) {
238 			end = 1;
239 			break;
240 		}
241 
242 		pos2 = os_strchr(pos, '=');
243 		if (pos2 == NULL) {
244 			wpa_printf(MSG_ERROR, "Line %d: Invalid cred line "
245 				   "'%s'.", *line, pos);
246 			errors++;
247 			continue;
248 		}
249 
250 		*pos2++ = '\0';
251 		if (*pos2 == '"') {
252 			if (os_strchr(pos2 + 1, '"') == NULL) {
253 				wpa_printf(MSG_ERROR, "Line %d: invalid "
254 					   "quotation '%s'.", *line, pos2);
255 				errors++;
256 				continue;
257 			}
258 		}
259 
260 		if (wpa_config_set_cred(cred, pos, pos2, *line) < 0)
261 			errors++;
262 	}
263 
264 	if (!end) {
265 		wpa_printf(MSG_ERROR, "Line %d: cred block was not "
266 			   "terminated properly.", *line);
267 		errors++;
268 	}
269 
270 	if (errors) {
271 		wpa_config_free_cred(cred);
272 		cred = NULL;
273 	}
274 
275 	return cred;
276 }
277 
278 
279 #ifndef CONFIG_NO_CONFIG_BLOBS
280 static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
281 						     const char *name)
282 {
283 	struct wpa_config_blob *blob;
284 	char buf[256], *pos;
285 	unsigned char *encoded = NULL, *nencoded;
286 	int end = 0;
287 	size_t encoded_len = 0, len;
288 
289 	wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
290 		   *line, name);
291 
292 	while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
293 		if (os_strcmp(pos, "}") == 0) {
294 			end = 1;
295 			break;
296 		}
297 
298 		len = os_strlen(pos);
299 		nencoded = os_realloc(encoded, encoded_len + len);
300 		if (nencoded == NULL) {
301 			wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
302 				   "blob", *line);
303 			os_free(encoded);
304 			return NULL;
305 		}
306 		encoded = nencoded;
307 		os_memcpy(encoded + encoded_len, pos, len);
308 		encoded_len += len;
309 	}
310 
311 	if (!end) {
312 		wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
313 			   "properly", *line);
314 		os_free(encoded);
315 		return NULL;
316 	}
317 
318 	blob = os_zalloc(sizeof(*blob));
319 	if (blob == NULL) {
320 		os_free(encoded);
321 		return NULL;
322 	}
323 	blob->name = os_strdup(name);
324 	blob->data = base64_decode(encoded, encoded_len, &blob->len);
325 	os_free(encoded);
326 
327 	if (blob->name == NULL || blob->data == NULL) {
328 		wpa_config_free_blob(blob);
329 		return NULL;
330 	}
331 
332 	return blob;
333 }
334 
335 
336 static int wpa_config_process_blob(struct wpa_config *config, FILE *f,
337 				   int *line, char *bname)
338 {
339 	char *name_end;
340 	struct wpa_config_blob *blob;
341 
342 	name_end = os_strchr(bname, '=');
343 	if (name_end == NULL) {
344 		wpa_printf(MSG_ERROR, "Line %d: no blob name terminator",
345 			   *line);
346 		return -1;
347 	}
348 	*name_end = '\0';
349 
350 	blob = wpa_config_read_blob(f, line, bname);
351 	if (blob == NULL) {
352 		wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s",
353 			   *line, bname);
354 		return -1;
355 	}
356 	wpa_config_set_blob(config, blob);
357 	return 0;
358 }
359 #endif /* CONFIG_NO_CONFIG_BLOBS */
360 
361 
362 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
363 {
364 	FILE *f;
365 	char buf[512], *pos;
366 	int errors = 0, line = 0;
367 	struct wpa_ssid *ssid, *tail, *head;
368 	struct wpa_cred *cred, *cred_tail, *cred_head;
369 	struct wpa_config *config;
370 	int id = 0;
371 	int cred_id = 0;
372 
373 	if (name == NULL)
374 		return NULL;
375 	if (cfgp)
376 		config = cfgp;
377 	else
378 		config = wpa_config_alloc_empty(NULL, NULL);
379 	if (config == NULL) {
380 		wpa_printf(MSG_ERROR, "Failed to allocate config file "
381 			   "structure");
382 		return NULL;
383 	}
384 	tail = head = config->ssid;
385 	while (tail && tail->next)
386 		tail = tail->next;
387 	cred_tail = cred_head = config->cred;
388 	while (cred_tail && cred_tail->next)
389 		cred_tail = cred_tail->next;
390 
391 	wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
392 	f = fopen(name, "r");
393 	if (f == NULL) {
394 		wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
395 			   "error: %s", name, strerror(errno));
396 		os_free(config);
397 		return NULL;
398 	}
399 
400 	while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
401 		if (os_strcmp(pos, "network={") == 0) {
402 			ssid = wpa_config_read_network(f, &line, id++);
403 			if (ssid == NULL) {
404 				wpa_printf(MSG_ERROR, "Line %d: failed to "
405 					   "parse network block.", line);
406 				errors++;
407 				continue;
408 			}
409 			if (head == NULL) {
410 				head = tail = ssid;
411 			} else {
412 				tail->next = ssid;
413 				tail = ssid;
414 			}
415 			if (wpa_config_add_prio_network(config, ssid)) {
416 				wpa_printf(MSG_ERROR, "Line %d: failed to add "
417 					   "network block to priority list.",
418 					   line);
419 				errors++;
420 				continue;
421 			}
422 		} else if (os_strcmp(pos, "cred={") == 0) {
423 			cred = wpa_config_read_cred(f, &line, cred_id++);
424 			if (cred == NULL) {
425 				wpa_printf(MSG_ERROR, "Line %d: failed to "
426 					   "parse cred block.", line);
427 				errors++;
428 				continue;
429 			}
430 			if (cred_head == NULL) {
431 				cred_head = cred_tail = cred;
432 			} else {
433 				cred_tail->next = cred;
434 				cred_tail = cred;
435 			}
436 #ifndef CONFIG_NO_CONFIG_BLOBS
437 		} else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
438 			if (wpa_config_process_blob(config, f, &line, pos + 12)
439 			    < 0) {
440 				wpa_printf(MSG_ERROR, "Line %d: failed to "
441 					   "process blob.", line);
442 				errors++;
443 				continue;
444 			}
445 #endif /* CONFIG_NO_CONFIG_BLOBS */
446 		} else if (wpa_config_process_global(config, pos, line) < 0) {
447 			wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
448 				   "line '%s'.", line, pos);
449 			errors++;
450 			continue;
451 		}
452 	}
453 
454 	fclose(f);
455 
456 	config->ssid = head;
457 	wpa_config_debug_dump_networks(config);
458 	config->cred = cred_head;
459 
460 #ifndef WPA_IGNORE_CONFIG_ERRORS
461 	if (errors) {
462 		wpa_config_free(config);
463 		config = NULL;
464 		head = NULL;
465 	}
466 #endif /* WPA_IGNORE_CONFIG_ERRORS */
467 
468 	return config;
469 }
470 
471 
472 #ifndef CONFIG_NO_CONFIG_WRITE
473 
474 static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
475 {
476 	char *value = wpa_config_get(ssid, field);
477 	if (value == NULL)
478 		return;
479 	fprintf(f, "\t%s=%s\n", field, value);
480 	os_free(value);
481 }
482 
483 
484 static void write_int(FILE *f, const char *field, int value, int def)
485 {
486 	if (value == def)
487 		return;
488 	fprintf(f, "\t%s=%d\n", field, value);
489 }
490 
491 
492 static void write_bssid(FILE *f, struct wpa_ssid *ssid)
493 {
494 	char *value = wpa_config_get(ssid, "bssid");
495 	if (value == NULL)
496 		return;
497 	fprintf(f, "\tbssid=%s\n", value);
498 	os_free(value);
499 }
500 
501 
502 static void write_psk(FILE *f, struct wpa_ssid *ssid)
503 {
504 	char *value;
505 
506 	if (ssid->mem_only_psk)
507 		return;
508 
509 	value = wpa_config_get(ssid, "psk");
510 	if (value == NULL)
511 		return;
512 	fprintf(f, "\tpsk=%s\n", value);
513 	os_free(value);
514 }
515 
516 
517 static void write_proto(FILE *f, struct wpa_ssid *ssid)
518 {
519 	char *value;
520 
521 	if (ssid->proto == DEFAULT_PROTO)
522 		return;
523 
524 	value = wpa_config_get(ssid, "proto");
525 	if (value == NULL)
526 		return;
527 	if (value[0])
528 		fprintf(f, "\tproto=%s\n", value);
529 	os_free(value);
530 }
531 
532 
533 static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
534 {
535 	char *value;
536 
537 	if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
538 		return;
539 
540 	value = wpa_config_get(ssid, "key_mgmt");
541 	if (value == NULL)
542 		return;
543 	if (value[0])
544 		fprintf(f, "\tkey_mgmt=%s\n", value);
545 	os_free(value);
546 }
547 
548 
549 static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
550 {
551 	char *value;
552 
553 	if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
554 		return;
555 
556 	value = wpa_config_get(ssid, "pairwise");
557 	if (value == NULL)
558 		return;
559 	if (value[0])
560 		fprintf(f, "\tpairwise=%s\n", value);
561 	os_free(value);
562 }
563 
564 
565 static void write_group(FILE *f, struct wpa_ssid *ssid)
566 {
567 	char *value;
568 
569 	if (ssid->group_cipher == DEFAULT_GROUP)
570 		return;
571 
572 	value = wpa_config_get(ssid, "group");
573 	if (value == NULL)
574 		return;
575 	if (value[0])
576 		fprintf(f, "\tgroup=%s\n", value);
577 	os_free(value);
578 }
579 
580 
581 static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
582 {
583 	char *value;
584 
585 	if (ssid->auth_alg == 0)
586 		return;
587 
588 	value = wpa_config_get(ssid, "auth_alg");
589 	if (value == NULL)
590 		return;
591 	if (value[0])
592 		fprintf(f, "\tauth_alg=%s\n", value);
593 	os_free(value);
594 }
595 
596 
597 #ifdef IEEE8021X_EAPOL
598 static void write_eap(FILE *f, struct wpa_ssid *ssid)
599 {
600 	char *value;
601 
602 	value = wpa_config_get(ssid, "eap");
603 	if (value == NULL)
604 		return;
605 
606 	if (value[0])
607 		fprintf(f, "\teap=%s\n", value);
608 	os_free(value);
609 }
610 #endif /* IEEE8021X_EAPOL */
611 
612 
613 static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
614 {
615 	char field[20], *value;
616 	int res;
617 
618 	res = os_snprintf(field, sizeof(field), "wep_key%d", idx);
619 	if (os_snprintf_error(sizeof(field), res))
620 		return;
621 	value = wpa_config_get(ssid, field);
622 	if (value) {
623 		fprintf(f, "\t%s=%s\n", field, value);
624 		os_free(value);
625 	}
626 }
627 
628 
629 #ifdef CONFIG_P2P
630 
631 static void write_go_p2p_dev_addr(FILE *f, struct wpa_ssid *ssid)
632 {
633 	char *value = wpa_config_get(ssid, "go_p2p_dev_addr");
634 	if (value == NULL)
635 		return;
636 	fprintf(f, "\tgo_p2p_dev_addr=%s\n", value);
637 	os_free(value);
638 }
639 
640 static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid)
641 {
642 	char *value = wpa_config_get(ssid, "p2p_client_list");
643 	if (value == NULL)
644 		return;
645 	fprintf(f, "\tp2p_client_list=%s\n", value);
646 	os_free(value);
647 }
648 
649 
650 static void write_psk_list(FILE *f, struct wpa_ssid *ssid)
651 {
652 	struct psk_list_entry *psk;
653 	char hex[32 * 2 + 1];
654 
655 	dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) {
656 		wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk));
657 		fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n",
658 			psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex);
659 	}
660 }
661 
662 #endif /* CONFIG_P2P */
663 
664 
665 static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
666 {
667 	int i;
668 
669 #define STR(t) write_str(f, #t, ssid)
670 #define INT(t) write_int(f, #t, ssid->t, 0)
671 #define INTe(t) write_int(f, #t, ssid->eap.t, 0)
672 #define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
673 #define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def)
674 
675 	STR(ssid);
676 	INT(scan_ssid);
677 	write_bssid(f, ssid);
678 	write_str(f, "bssid_blacklist", ssid);
679 	write_str(f, "bssid_whitelist", ssid);
680 	write_psk(f, ssid);
681 	INT(mem_only_psk);
682 	write_proto(f, ssid);
683 	write_key_mgmt(f, ssid);
684 	INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD);
685 	write_pairwise(f, ssid);
686 	write_group(f, ssid);
687 	write_auth_alg(f, ssid);
688 	STR(bgscan);
689 	STR(autoscan);
690 	STR(scan_freq);
691 #ifdef IEEE8021X_EAPOL
692 	write_eap(f, ssid);
693 	STR(identity);
694 	STR(anonymous_identity);
695 	STR(password);
696 	STR(ca_cert);
697 	STR(ca_path);
698 	STR(client_cert);
699 	STR(private_key);
700 	STR(private_key_passwd);
701 	STR(dh_file);
702 	STR(subject_match);
703 	STR(altsubject_match);
704 	STR(domain_suffix_match);
705 	STR(domain_match);
706 	STR(ca_cert2);
707 	STR(ca_path2);
708 	STR(client_cert2);
709 	STR(private_key2);
710 	STR(private_key2_passwd);
711 	STR(dh_file2);
712 	STR(subject_match2);
713 	STR(altsubject_match2);
714 	STR(domain_suffix_match2);
715 	STR(domain_match2);
716 	STR(phase1);
717 	STR(phase2);
718 	STR(pcsc);
719 	STR(pin);
720 	STR(engine_id);
721 	STR(key_id);
722 	STR(cert_id);
723 	STR(ca_cert_id);
724 	STR(key2_id);
725 	STR(pin2);
726 	STR(engine2_id);
727 	STR(cert2_id);
728 	STR(ca_cert2_id);
729 	INTe(engine);
730 	INTe(engine2);
731 	INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
732 	STR(openssl_ciphers);
733 	INTe(erp);
734 #endif /* IEEE8021X_EAPOL */
735 	for (i = 0; i < 4; i++)
736 		write_wep_key(f, i, ssid);
737 	INT(wep_tx_keyidx);
738 	INT(priority);
739 #ifdef IEEE8021X_EAPOL
740 	INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
741 	STR(pac_file);
742 	INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
743 	INTe(ocsp);
744 	INT_DEFe(sim_num, DEFAULT_USER_SELECTED_SIM);
745 #endif /* IEEE8021X_EAPOL */
746 	INT(mode);
747 	INT(no_auto_peer);
748 	INT(frequency);
749 	INT(fixed_freq);
750 	write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
751 	INT(disabled);
752 	INT(peerkey);
753 	INT(mixed_cell);
754 #ifdef CONFIG_IEEE80211W
755 	write_int(f, "ieee80211w", ssid->ieee80211w,
756 		  MGMT_FRAME_PROTECTION_DEFAULT);
757 #endif /* CONFIG_IEEE80211W */
758 	STR(id_str);
759 #ifdef CONFIG_P2P
760 	write_go_p2p_dev_addr(f, ssid);
761 	write_p2p_client_list(f, ssid);
762 	write_psk_list(f, ssid);
763 #endif /* CONFIG_P2P */
764 	INT(ap_max_inactivity);
765 	INT(dtim_period);
766 	INT(beacon_int);
767 #ifdef CONFIG_MACSEC
768 	INT(macsec_policy);
769 #endif /* CONFIG_MACSEC */
770 #ifdef CONFIG_HS20
771 	INT(update_identifier);
772 #endif /* CONFIG_HS20 */
773 	write_int(f, "mac_addr", ssid->mac_addr, -1);
774 #ifdef CONFIG_MESH
775 	STR(mesh_basic_rates);
776 	INT_DEF(dot11MeshMaxRetries, DEFAULT_MESH_MAX_RETRIES);
777 	INT_DEF(dot11MeshRetryTimeout, DEFAULT_MESH_RETRY_TIMEOUT);
778 	INT_DEF(dot11MeshConfirmTimeout, DEFAULT_MESH_CONFIRM_TIMEOUT);
779 	INT_DEF(dot11MeshHoldingTimeout, DEFAULT_MESH_HOLDING_TIMEOUT);
780 #endif /* CONFIG_MESH */
781 	INT(wpa_ptk_rekey);
782 	INT(ignore_broadcast_ssid);
783 #ifdef CONFIG_HT_OVERRIDES
784 	INT_DEF(disable_ht, DEFAULT_DISABLE_HT);
785 	INT_DEF(disable_ht40, DEFAULT_DISABLE_HT40);
786 	INT_DEF(disable_sgi, DEFAULT_DISABLE_SGI);
787 	INT_DEF(disable_ldpc, DEFAULT_DISABLE_LDPC);
788 	INT(ht40_intolerant);
789 	INT_DEF(disable_max_amsdu, DEFAULT_DISABLE_MAX_AMSDU);
790 	INT_DEF(ampdu_factor, DEFAULT_AMPDU_FACTOR);
791 	INT_DEF(ampdu_density, DEFAULT_AMPDU_DENSITY);
792 	STR(ht_mcs);
793 #endif /* CONFIG_HT_OVERRIDES */
794 #ifdef CONFIG_VHT_OVERRIDES
795 	INT(disable_vht);
796 	INT(vht_capa);
797 	INT(vht_capa_mask);
798 	INT_DEF(vht_rx_mcs_nss_1, -1);
799 	INT_DEF(vht_rx_mcs_nss_2, -1);
800 	INT_DEF(vht_rx_mcs_nss_3, -1);
801 	INT_DEF(vht_rx_mcs_nss_4, -1);
802 	INT_DEF(vht_rx_mcs_nss_5, -1);
803 	INT_DEF(vht_rx_mcs_nss_6, -1);
804 	INT_DEF(vht_rx_mcs_nss_7, -1);
805 	INT_DEF(vht_rx_mcs_nss_8, -1);
806 	INT_DEF(vht_tx_mcs_nss_1, -1);
807 	INT_DEF(vht_tx_mcs_nss_2, -1);
808 	INT_DEF(vht_tx_mcs_nss_3, -1);
809 	INT_DEF(vht_tx_mcs_nss_4, -1);
810 	INT_DEF(vht_tx_mcs_nss_5, -1);
811 	INT_DEF(vht_tx_mcs_nss_6, -1);
812 	INT_DEF(vht_tx_mcs_nss_7, -1);
813 	INT_DEF(vht_tx_mcs_nss_8, -1);
814 #endif /* CONFIG_VHT_OVERRIDES */
815 
816 #undef STR
817 #undef INT
818 #undef INT_DEF
819 }
820 
821 
822 static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
823 {
824 	size_t i;
825 
826 	if (cred->priority)
827 		fprintf(f, "\tpriority=%d\n", cred->priority);
828 	if (cred->pcsc)
829 		fprintf(f, "\tpcsc=%d\n", cred->pcsc);
830 	if (cred->realm)
831 		fprintf(f, "\trealm=\"%s\"\n", cred->realm);
832 	if (cred->username)
833 		fprintf(f, "\tusername=\"%s\"\n", cred->username);
834 	if (cred->password && cred->ext_password)
835 		fprintf(f, "\tpassword=ext:%s\n", cred->password);
836 	else if (cred->password)
837 		fprintf(f, "\tpassword=\"%s\"\n", cred->password);
838 	if (cred->ca_cert)
839 		fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert);
840 	if (cred->client_cert)
841 		fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert);
842 	if (cred->private_key)
843 		fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key);
844 	if (cred->private_key_passwd)
845 		fprintf(f, "\tprivate_key_passwd=\"%s\"\n",
846 			cred->private_key_passwd);
847 	if (cred->imsi)
848 		fprintf(f, "\timsi=\"%s\"\n", cred->imsi);
849 	if (cred->milenage)
850 		fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage);
851 	for (i = 0; i < cred->num_domain; i++)
852 		fprintf(f, "\tdomain=\"%s\"\n", cred->domain[i]);
853 	if (cred->domain_suffix_match)
854 		fprintf(f, "\tdomain_suffix_match=\"%s\"\n",
855 			cred->domain_suffix_match);
856 	if (cred->roaming_consortium_len) {
857 		fprintf(f, "\troaming_consortium=");
858 		for (i = 0; i < cred->roaming_consortium_len; i++)
859 			fprintf(f, "%02x", cred->roaming_consortium[i]);
860 		fprintf(f, "\n");
861 	}
862 	if (cred->eap_method) {
863 		const char *name;
864 		name = eap_get_name(cred->eap_method[0].vendor,
865 				    cred->eap_method[0].method);
866 		if (name)
867 			fprintf(f, "\teap=%s\n", name);
868 	}
869 	if (cred->phase1)
870 		fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);
871 	if (cred->phase2)
872 		fprintf(f, "\tphase2=\"%s\"\n", cred->phase2);
873 	if (cred->excluded_ssid) {
874 		size_t j;
875 		for (i = 0; i < cred->num_excluded_ssid; i++) {
876 			struct excluded_ssid *e = &cred->excluded_ssid[i];
877 			fprintf(f, "\texcluded_ssid=");
878 			for (j = 0; j < e->ssid_len; j++)
879 				fprintf(f, "%02x", e->ssid[j]);
880 			fprintf(f, "\n");
881 		}
882 	}
883 	if (cred->roaming_partner) {
884 		for (i = 0; i < cred->num_roaming_partner; i++) {
885 			struct roaming_partner *p = &cred->roaming_partner[i];
886 			fprintf(f, "\troaming_partner=\"%s,%d,%u,%s\"\n",
887 				p->fqdn, p->exact_match, p->priority,
888 				p->country);
889 		}
890 	}
891 	if (cred->update_identifier)
892 		fprintf(f, "\tupdate_identifier=%d\n", cred->update_identifier);
893 
894 	if (cred->provisioning_sp)
895 		fprintf(f, "\tprovisioning_sp=\"%s\"\n", cred->provisioning_sp);
896 	if (cred->sp_priority)
897 		fprintf(f, "\tsp_priority=%d\n", cred->sp_priority);
898 
899 	if (cred->min_dl_bandwidth_home)
900 		fprintf(f, "\tmin_dl_bandwidth_home=%u\n",
901 			cred->min_dl_bandwidth_home);
902 	if (cred->min_ul_bandwidth_home)
903 		fprintf(f, "\tmin_ul_bandwidth_home=%u\n",
904 			cred->min_ul_bandwidth_home);
905 	if (cred->min_dl_bandwidth_roaming)
906 		fprintf(f, "\tmin_dl_bandwidth_roaming=%u\n",
907 			cred->min_dl_bandwidth_roaming);
908 	if (cred->min_ul_bandwidth_roaming)
909 		fprintf(f, "\tmin_ul_bandwidth_roaming=%u\n",
910 			cred->min_ul_bandwidth_roaming);
911 
912 	if (cred->max_bss_load)
913 		fprintf(f, "\tmax_bss_load=%u\n",
914 			cred->max_bss_load);
915 
916 	if (cred->ocsp)
917 		fprintf(f, "\tocsp=%d\n", cred->ocsp);
918 
919 	if (cred->num_req_conn_capab) {
920 		for (i = 0; i < cred->num_req_conn_capab; i++) {
921 			int *ports;
922 
923 			fprintf(f, "\treq_conn_capab=%u",
924 				cred->req_conn_capab_proto[i]);
925 			ports = cred->req_conn_capab_port[i];
926 			if (ports) {
927 				int j;
928 				for (j = 0; ports[j] != -1; j++) {
929 					fprintf(f, "%s%d", j > 0 ? "," : ":",
930 						ports[j]);
931 				}
932 			}
933 			fprintf(f, "\n");
934 		}
935 	}
936 
937 	if (cred->required_roaming_consortium_len) {
938 		fprintf(f, "\trequired_roaming_consortium=");
939 		for (i = 0; i < cred->required_roaming_consortium_len; i++)
940 			fprintf(f, "%02x",
941 				cred->required_roaming_consortium[i]);
942 		fprintf(f, "\n");
943 	}
944 
945 	if (cred->sim_num != DEFAULT_USER_SELECTED_SIM)
946 		fprintf(f, "\tsim_num=%d\n", cred->sim_num);
947 }
948 
949 
950 #ifndef CONFIG_NO_CONFIG_BLOBS
951 static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
952 {
953 	unsigned char *encoded;
954 
955 	encoded = base64_encode(blob->data, blob->len, NULL);
956 	if (encoded == NULL)
957 		return -1;
958 
959 	fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
960 	os_free(encoded);
961 	return 0;
962 }
963 #endif /* CONFIG_NO_CONFIG_BLOBS */
964 
965 
966 static void write_global_bin(FILE *f, const char *field,
967 			     const struct wpabuf *val)
968 {
969 	size_t i;
970 	const u8 *pos;
971 
972 	if (val == NULL)
973 		return;
974 
975 	fprintf(f, "%s=", field);
976 	pos = wpabuf_head(val);
977 	for (i = 0; i < wpabuf_len(val); i++)
978 		fprintf(f, "%02X", *pos++);
979 	fprintf(f, "\n");
980 }
981 
982 
983 static void wpa_config_write_global(FILE *f, struct wpa_config *config)
984 {
985 #ifdef CONFIG_CTRL_IFACE
986 	if (config->ctrl_interface)
987 		fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
988 	if (config->ctrl_interface_group)
989 		fprintf(f, "ctrl_interface_group=%s\n",
990 			config->ctrl_interface_group);
991 #endif /* CONFIG_CTRL_IFACE */
992 	if (config->eapol_version != DEFAULT_EAPOL_VERSION)
993 		fprintf(f, "eapol_version=%d\n", config->eapol_version);
994 	if (config->ap_scan != DEFAULT_AP_SCAN)
995 		fprintf(f, "ap_scan=%d\n", config->ap_scan);
996 	if (config->disable_scan_offload)
997 		fprintf(f, "disable_scan_offload=%d\n",
998 			config->disable_scan_offload);
999 	if (config->fast_reauth != DEFAULT_FAST_REAUTH)
1000 		fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
1001 	if (config->opensc_engine_path)
1002 		fprintf(f, "opensc_engine_path=%s\n",
1003 			config->opensc_engine_path);
1004 	if (config->pkcs11_engine_path)
1005 		fprintf(f, "pkcs11_engine_path=%s\n",
1006 			config->pkcs11_engine_path);
1007 	if (config->pkcs11_module_path)
1008 		fprintf(f, "pkcs11_module_path=%s\n",
1009 			config->pkcs11_module_path);
1010 	if (config->openssl_ciphers)
1011 		fprintf(f, "openssl_ciphers=%s\n", config->openssl_ciphers);
1012 	if (config->pcsc_reader)
1013 		fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader);
1014 	if (config->pcsc_pin)
1015 		fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin);
1016 	if (config->driver_param)
1017 		fprintf(f, "driver_param=%s\n", config->driver_param);
1018 	if (config->dot11RSNAConfigPMKLifetime)
1019 		fprintf(f, "dot11RSNAConfigPMKLifetime=%u\n",
1020 			config->dot11RSNAConfigPMKLifetime);
1021 	if (config->dot11RSNAConfigPMKReauthThreshold)
1022 		fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%u\n",
1023 			config->dot11RSNAConfigPMKReauthThreshold);
1024 	if (config->dot11RSNAConfigSATimeout)
1025 		fprintf(f, "dot11RSNAConfigSATimeout=%u\n",
1026 			config->dot11RSNAConfigSATimeout);
1027 	if (config->update_config)
1028 		fprintf(f, "update_config=%d\n", config->update_config);
1029 #ifdef CONFIG_WPS
1030 	if (!is_nil_uuid(config->uuid)) {
1031 		char buf[40];
1032 		uuid_bin2str(config->uuid, buf, sizeof(buf));
1033 		fprintf(f, "uuid=%s\n", buf);
1034 	}
1035 	if (config->device_name)
1036 		fprintf(f, "device_name=%s\n", config->device_name);
1037 	if (config->manufacturer)
1038 		fprintf(f, "manufacturer=%s\n", config->manufacturer);
1039 	if (config->model_name)
1040 		fprintf(f, "model_name=%s\n", config->model_name);
1041 	if (config->model_number)
1042 		fprintf(f, "model_number=%s\n", config->model_number);
1043 	if (config->serial_number)
1044 		fprintf(f, "serial_number=%s\n", config->serial_number);
1045 	{
1046 		char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
1047 		buf = wps_dev_type_bin2str(config->device_type,
1048 					   _buf, sizeof(_buf));
1049 		if (os_strcmp(buf, "0-00000000-0") != 0)
1050 			fprintf(f, "device_type=%s\n", buf);
1051 	}
1052 	if (WPA_GET_BE32(config->os_version))
1053 		fprintf(f, "os_version=%08x\n",
1054 			WPA_GET_BE32(config->os_version));
1055 	if (config->config_methods)
1056 		fprintf(f, "config_methods=%s\n", config->config_methods);
1057 	if (config->wps_cred_processing)
1058 		fprintf(f, "wps_cred_processing=%d\n",
1059 			config->wps_cred_processing);
1060 	if (config->wps_vendor_ext_m1) {
1061 		int i, len = wpabuf_len(config->wps_vendor_ext_m1);
1062 		const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1);
1063 		if (len > 0) {
1064 			fprintf(f, "wps_vendor_ext_m1=");
1065 			for (i = 0; i < len; i++)
1066 				fprintf(f, "%02x", *p++);
1067 			fprintf(f, "\n");
1068 		}
1069 	}
1070 #endif /* CONFIG_WPS */
1071 #ifdef CONFIG_P2P
1072 	if (config->p2p_listen_reg_class)
1073 		fprintf(f, "p2p_listen_reg_class=%d\n",
1074 			config->p2p_listen_reg_class);
1075 	if (config->p2p_listen_channel)
1076 		fprintf(f, "p2p_listen_channel=%d\n",
1077 			config->p2p_listen_channel);
1078 	if (config->p2p_oper_reg_class)
1079 		fprintf(f, "p2p_oper_reg_class=%d\n",
1080 			config->p2p_oper_reg_class);
1081 	if (config->p2p_oper_channel)
1082 		fprintf(f, "p2p_oper_channel=%d\n", config->p2p_oper_channel);
1083 	if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
1084 		fprintf(f, "p2p_go_intent=%d\n", config->p2p_go_intent);
1085 	if (config->p2p_ssid_postfix)
1086 		fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix);
1087 	if (config->persistent_reconnect)
1088 		fprintf(f, "persistent_reconnect=%d\n",
1089 			config->persistent_reconnect);
1090 	if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
1091 		fprintf(f, "p2p_intra_bss=%d\n", config->p2p_intra_bss);
1092 	if (config->p2p_group_idle)
1093 		fprintf(f, "p2p_group_idle=%d\n", config->p2p_group_idle);
1094 	if (config->p2p_passphrase_len)
1095 		fprintf(f, "p2p_passphrase_len=%u\n",
1096 			config->p2p_passphrase_len);
1097 	if (config->p2p_pref_chan) {
1098 		unsigned int i;
1099 		fprintf(f, "p2p_pref_chan=");
1100 		for (i = 0; i < config->num_p2p_pref_chan; i++) {
1101 			fprintf(f, "%s%u:%u", i > 0 ? "," : "",
1102 				config->p2p_pref_chan[i].op_class,
1103 				config->p2p_pref_chan[i].chan);
1104 		}
1105 		fprintf(f, "\n");
1106 	}
1107 	if (config->p2p_no_go_freq.num) {
1108 		char *val = freq_range_list_str(&config->p2p_no_go_freq);
1109 		if (val) {
1110 			fprintf(f, "p2p_no_go_freq=%s\n", val);
1111 			os_free(val);
1112 		}
1113 	}
1114 	if (config->p2p_add_cli_chan)
1115 		fprintf(f, "p2p_add_cli_chan=%d\n", config->p2p_add_cli_chan);
1116 	if (config->p2p_optimize_listen_chan !=
1117 	    DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN)
1118 		fprintf(f, "p2p_optimize_listen_chan=%d\n",
1119 			config->p2p_optimize_listen_chan);
1120 	if (config->p2p_go_ht40)
1121 		fprintf(f, "p2p_go_ht40=%d\n", config->p2p_go_ht40);
1122 	if (config->p2p_go_vht)
1123 		fprintf(f, "p2p_go_vht=%d\n", config->p2p_go_vht);
1124 	if (config->p2p_go_ctwindow != DEFAULT_P2P_GO_CTWINDOW)
1125 		fprintf(f, "p2p_go_ctwindow=%d\n", config->p2p_go_ctwindow);
1126 	if (config->p2p_disabled)
1127 		fprintf(f, "p2p_disabled=%d\n", config->p2p_disabled);
1128 	if (config->p2p_no_group_iface)
1129 		fprintf(f, "p2p_no_group_iface=%d\n",
1130 			config->p2p_no_group_iface);
1131 	if (config->p2p_ignore_shared_freq)
1132 		fprintf(f, "p2p_ignore_shared_freq=%d\n",
1133 			config->p2p_ignore_shared_freq);
1134 	if (config->p2p_cli_probe)
1135 		fprintf(f, "p2p_cli_probe=%d\n", config->p2p_cli_probe);
1136 	if (config->p2p_go_freq_change_policy != DEFAULT_P2P_GO_FREQ_MOVE)
1137 		fprintf(f, "p2p_go_freq_change_policy=%u\n",
1138 			config->p2p_go_freq_change_policy);
1139 #endif /* CONFIG_P2P */
1140 	if (config->country[0] && config->country[1]) {
1141 		fprintf(f, "country=%c%c\n",
1142 			config->country[0], config->country[1]);
1143 	}
1144 	if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
1145 		fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
1146 	if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
1147 		fprintf(f, "bss_expiration_age=%u\n",
1148 			config->bss_expiration_age);
1149 	if (config->bss_expiration_scan_count !=
1150 	    DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
1151 		fprintf(f, "bss_expiration_scan_count=%u\n",
1152 			config->bss_expiration_scan_count);
1153 	if (config->filter_ssids)
1154 		fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
1155 	if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
1156 		fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
1157 	if (config->disassoc_low_ack)
1158 		fprintf(f, "disassoc_low_ack=%d\n", config->disassoc_low_ack);
1159 #ifdef CONFIG_HS20
1160 	if (config->hs20)
1161 		fprintf(f, "hs20=1\n");
1162 #endif /* CONFIG_HS20 */
1163 #ifdef CONFIG_INTERWORKING
1164 	if (config->interworking)
1165 		fprintf(f, "interworking=%d\n", config->interworking);
1166 	if (!is_zero_ether_addr(config->hessid))
1167 		fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
1168 	if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
1169 		fprintf(f, "access_network_type=%d\n",
1170 			config->access_network_type);
1171 #endif /* CONFIG_INTERWORKING */
1172 	if (config->pbc_in_m1)
1173 		fprintf(f, "pbc_in_m1=%d\n", config->pbc_in_m1);
1174 	if (config->wps_nfc_pw_from_config) {
1175 		if (config->wps_nfc_dev_pw_id)
1176 			fprintf(f, "wps_nfc_dev_pw_id=%d\n",
1177 				config->wps_nfc_dev_pw_id);
1178 		write_global_bin(f, "wps_nfc_dh_pubkey",
1179 				 config->wps_nfc_dh_pubkey);
1180 		write_global_bin(f, "wps_nfc_dh_privkey",
1181 				 config->wps_nfc_dh_privkey);
1182 		write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
1183 	}
1184 
1185 	if (config->ext_password_backend)
1186 		fprintf(f, "ext_password_backend=%s\n",
1187 			config->ext_password_backend);
1188 	if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
1189 		fprintf(f, "p2p_go_max_inactivity=%d\n",
1190 			config->p2p_go_max_inactivity);
1191 	if (config->auto_interworking)
1192 		fprintf(f, "auto_interworking=%d\n",
1193 			config->auto_interworking);
1194 	if (config->okc)
1195 		fprintf(f, "okc=%d\n", config->okc);
1196 	if (config->pmf)
1197 		fprintf(f, "pmf=%d\n", config->pmf);
1198 	if (config->dtim_period)
1199 		fprintf(f, "dtim_period=%d\n", config->dtim_period);
1200 	if (config->beacon_int)
1201 		fprintf(f, "beacon_int=%d\n", config->beacon_int);
1202 
1203 	if (config->sae_groups) {
1204 		int i;
1205 		fprintf(f, "sae_groups=");
1206 		for (i = 0; config->sae_groups[i] >= 0; i++) {
1207 			fprintf(f, "%s%d", i > 0 ? " " : "",
1208 				config->sae_groups[i]);
1209 		}
1210 		fprintf(f, "\n");
1211 	}
1212 
1213 	if (config->ap_vendor_elements) {
1214 		int i, len = wpabuf_len(config->ap_vendor_elements);
1215 		const u8 *p = wpabuf_head_u8(config->ap_vendor_elements);
1216 		if (len > 0) {
1217 			fprintf(f, "ap_vendor_elements=");
1218 			for (i = 0; i < len; i++)
1219 				fprintf(f, "%02x", *p++);
1220 			fprintf(f, "\n");
1221 		}
1222 	}
1223 
1224 	if (config->ignore_old_scan_res)
1225 		fprintf(f, "ignore_old_scan_res=%d\n",
1226 			config->ignore_old_scan_res);
1227 
1228 	if (config->freq_list && config->freq_list[0]) {
1229 		int i;
1230 		fprintf(f, "freq_list=");
1231 		for (i = 0; config->freq_list[i]; i++) {
1232 			fprintf(f, "%s%d", i > 0 ? " " : "",
1233 				config->freq_list[i]);
1234 		}
1235 		fprintf(f, "\n");
1236 	}
1237 	if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
1238 		fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
1239 
1240 	if (config->sched_scan_interval)
1241 		fprintf(f, "sched_scan_interval=%u\n",
1242 			config->sched_scan_interval);
1243 
1244 	if (config->external_sim)
1245 		fprintf(f, "external_sim=%d\n", config->external_sim);
1246 
1247 	if (config->tdls_external_control)
1248 		fprintf(f, "tdls_external_control=%d\n",
1249 			config->tdls_external_control);
1250 
1251 	if (config->wowlan_triggers)
1252 		fprintf(f, "wowlan_triggers=%s\n",
1253 			config->wowlan_triggers);
1254 
1255 	if (config->bgscan)
1256 		fprintf(f, "bgscan=\"%s\"\n", config->bgscan);
1257 
1258 	if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
1259 		fprintf(f, "p2p_search_delay=%u\n",
1260 			config->p2p_search_delay);
1261 
1262 	if (config->mac_addr)
1263 		fprintf(f, "mac_addr=%d\n", config->mac_addr);
1264 
1265 	if (config->rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
1266 		fprintf(f, "rand_addr_lifetime=%u\n",
1267 			config->rand_addr_lifetime);
1268 
1269 	if (config->preassoc_mac_addr)
1270 		fprintf(f, "preassoc_mac_addr=%d\n", config->preassoc_mac_addr);
1271 
1272 	if (config->key_mgmt_offload != DEFAULT_KEY_MGMT_OFFLOAD)
1273 		fprintf(f, "key_mgmt_offload=%d\n", config->key_mgmt_offload);
1274 
1275 	if (config->user_mpm != DEFAULT_USER_MPM)
1276 		fprintf(f, "user_mpm=%d\n", config->user_mpm);
1277 
1278 	if (config->max_peer_links != DEFAULT_MAX_PEER_LINKS)
1279 		fprintf(f, "max_peer_links=%d\n", config->max_peer_links);
1280 
1281 	if (config->cert_in_cb != DEFAULT_CERT_IN_CB)
1282 		fprintf(f, "cert_in_cb=%d\n", config->cert_in_cb);
1283 
1284 	if (config->mesh_max_inactivity != DEFAULT_MESH_MAX_INACTIVITY)
1285 		fprintf(f, "mesh_max_inactivity=%d\n",
1286 			config->mesh_max_inactivity);
1287 
1288 	if (config->dot11RSNASAERetransPeriod !=
1289 	    DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD)
1290 		fprintf(f, "dot11RSNASAERetransPeriod=%d\n",
1291 			config->dot11RSNASAERetransPeriod);
1292 
1293 	if (config->passive_scan)
1294 		fprintf(f, "passive_scan=%d\n", config->passive_scan);
1295 
1296 	if (config->reassoc_same_bss_optim)
1297 		fprintf(f, "reassoc_same_bss_optim=%d\n",
1298 			config->reassoc_same_bss_optim);
1299 
1300 	if (config->wps_priority)
1301 		fprintf(f, "wps_priority=%d\n", config->wps_priority);
1302 }
1303 
1304 #endif /* CONFIG_NO_CONFIG_WRITE */
1305 
1306 
1307 int wpa_config_write(const char *name, struct wpa_config *config)
1308 {
1309 #ifndef CONFIG_NO_CONFIG_WRITE
1310 	FILE *f;
1311 	struct wpa_ssid *ssid;
1312 	struct wpa_cred *cred;
1313 #ifndef CONFIG_NO_CONFIG_BLOBS
1314 	struct wpa_config_blob *blob;
1315 #endif /* CONFIG_NO_CONFIG_BLOBS */
1316 	int ret = 0;
1317 	const char *orig_name = name;
1318 	int tmp_len = os_strlen(name) + 5; /* allow space for .tmp suffix */
1319 	char *tmp_name = os_malloc(tmp_len);
1320 
1321 	if (tmp_name) {
1322 		os_snprintf(tmp_name, tmp_len, "%s.tmp", name);
1323 		name = tmp_name;
1324 	}
1325 
1326 	wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
1327 
1328 	f = fopen(name, "w");
1329 	if (f == NULL) {
1330 		wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
1331 		os_free(tmp_name);
1332 		return -1;
1333 	}
1334 
1335 	wpa_config_write_global(f, config);
1336 
1337 	for (cred = config->cred; cred; cred = cred->next) {
1338 		if (cred->temporary)
1339 			continue;
1340 		fprintf(f, "\ncred={\n");
1341 		wpa_config_write_cred(f, cred);
1342 		fprintf(f, "}\n");
1343 	}
1344 
1345 	for (ssid = config->ssid; ssid; ssid = ssid->next) {
1346 		if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
1347 			continue; /* do not save temporary networks */
1348 		if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
1349 		    !ssid->passphrase)
1350 			continue; /* do not save invalid network */
1351 		fprintf(f, "\nnetwork={\n");
1352 		wpa_config_write_network(f, ssid);
1353 		fprintf(f, "}\n");
1354 	}
1355 
1356 #ifndef CONFIG_NO_CONFIG_BLOBS
1357 	for (blob = config->blobs; blob; blob = blob->next) {
1358 		ret = wpa_config_write_blob(f, blob);
1359 		if (ret)
1360 			break;
1361 	}
1362 #endif /* CONFIG_NO_CONFIG_BLOBS */
1363 
1364 	os_fdatasync(f);
1365 
1366 	fclose(f);
1367 
1368 	if (tmp_name) {
1369 		int chmod_ret = 0;
1370 
1371 #ifdef ANDROID
1372 		chmod_ret = chmod(tmp_name,
1373 				  S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
1374 #endif /* ANDROID */
1375 		if (chmod_ret != 0 || rename(tmp_name, orig_name) != 0)
1376 			ret = -1;
1377 
1378 		os_free(tmp_name);
1379 	}
1380 
1381 	wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
1382 		   orig_name, ret ? "un" : "");
1383 	return ret;
1384 #else /* CONFIG_NO_CONFIG_WRITE */
1385 	return -1;
1386 #endif /* CONFIG_NO_CONFIG_WRITE */
1387 }
1388