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      1 /*
      2  * WPA Supplicant / Configuration backend: text file
      3  * Copyright (c) 2003-2012, Jouni Malinen <j (at) 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 #endif /* CONFIG_P2P */
   1137 	if (config->country[0] && config->country[1]) {
   1138 		fprintf(f, "country=%c%c\n",
   1139 			config->country[0], config->country[1]);
   1140 	}
   1141 	if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
   1142 		fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
   1143 	if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
   1144 		fprintf(f, "bss_expiration_age=%u\n",
   1145 			config->bss_expiration_age);
   1146 	if (config->bss_expiration_scan_count !=
   1147 	    DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
   1148 		fprintf(f, "bss_expiration_scan_count=%u\n",
   1149 			config->bss_expiration_scan_count);
   1150 	if (config->filter_ssids)
   1151 		fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
   1152 	if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
   1153 		fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
   1154 	if (config->disassoc_low_ack)
   1155 		fprintf(f, "disassoc_low_ack=%d\n", config->disassoc_low_ack);
   1156 #ifdef CONFIG_HS20
   1157 	if (config->hs20)
   1158 		fprintf(f, "hs20=1\n");
   1159 #endif /* CONFIG_HS20 */
   1160 #ifdef CONFIG_INTERWORKING
   1161 	if (config->interworking)
   1162 		fprintf(f, "interworking=%d\n", config->interworking);
   1163 	if (!is_zero_ether_addr(config->hessid))
   1164 		fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
   1165 	if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
   1166 		fprintf(f, "access_network_type=%d\n",
   1167 			config->access_network_type);
   1168 #endif /* CONFIG_INTERWORKING */
   1169 	if (config->pbc_in_m1)
   1170 		fprintf(f, "pbc_in_m1=%d\n", config->pbc_in_m1);
   1171 	if (config->wps_nfc_pw_from_config) {
   1172 		if (config->wps_nfc_dev_pw_id)
   1173 			fprintf(f, "wps_nfc_dev_pw_id=%d\n",
   1174 				config->wps_nfc_dev_pw_id);
   1175 		write_global_bin(f, "wps_nfc_dh_pubkey",
   1176 				 config->wps_nfc_dh_pubkey);
   1177 		write_global_bin(f, "wps_nfc_dh_privkey",
   1178 				 config->wps_nfc_dh_privkey);
   1179 		write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
   1180 	}
   1181 
   1182 	if (config->ext_password_backend)
   1183 		fprintf(f, "ext_password_backend=%s\n",
   1184 			config->ext_password_backend);
   1185 	if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
   1186 		fprintf(f, "p2p_go_max_inactivity=%d\n",
   1187 			config->p2p_go_max_inactivity);
   1188 	if (config->auto_interworking)
   1189 		fprintf(f, "auto_interworking=%d\n",
   1190 			config->auto_interworking);
   1191 	if (config->okc)
   1192 		fprintf(f, "okc=%d\n", config->okc);
   1193 	if (config->pmf)
   1194 		fprintf(f, "pmf=%d\n", config->pmf);
   1195 	if (config->dtim_period)
   1196 		fprintf(f, "dtim_period=%d\n", config->dtim_period);
   1197 	if (config->beacon_int)
   1198 		fprintf(f, "beacon_int=%d\n", config->beacon_int);
   1199 
   1200 	if (config->sae_groups) {
   1201 		int i;
   1202 		fprintf(f, "sae_groups=");
   1203 		for (i = 0; config->sae_groups[i] >= 0; i++) {
   1204 			fprintf(f, "%s%d", i > 0 ? " " : "",
   1205 				config->sae_groups[i]);
   1206 		}
   1207 		fprintf(f, "\n");
   1208 	}
   1209 
   1210 	if (config->ap_vendor_elements) {
   1211 		int i, len = wpabuf_len(config->ap_vendor_elements);
   1212 		const u8 *p = wpabuf_head_u8(config->ap_vendor_elements);
   1213 		if (len > 0) {
   1214 			fprintf(f, "ap_vendor_elements=");
   1215 			for (i = 0; i < len; i++)
   1216 				fprintf(f, "%02x", *p++);
   1217 			fprintf(f, "\n");
   1218 		}
   1219 	}
   1220 
   1221 	if (config->ignore_old_scan_res)
   1222 		fprintf(f, "ignore_old_scan_res=%d\n",
   1223 			config->ignore_old_scan_res);
   1224 
   1225 	if (config->freq_list && config->freq_list[0]) {
   1226 		int i;
   1227 		fprintf(f, "freq_list=");
   1228 		for (i = 0; config->freq_list[i]; i++) {
   1229 			fprintf(f, "%s%d", i > 0 ? " " : "",
   1230 				config->freq_list[i]);
   1231 		}
   1232 		fprintf(f, "\n");
   1233 	}
   1234 	if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
   1235 		fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
   1236 
   1237 	if (config->sched_scan_interval)
   1238 		fprintf(f, "sched_scan_interval=%u\n",
   1239 			config->sched_scan_interval);
   1240 
   1241 	if (config->external_sim)
   1242 		fprintf(f, "external_sim=%d\n", config->external_sim);
   1243 
   1244 	if (config->tdls_external_control)
   1245 		fprintf(f, "tdls_external_control=%d\n",
   1246 			config->tdls_external_control);
   1247 
   1248 	if (config->wowlan_triggers)
   1249 		fprintf(f, "wowlan_triggers=%s\n",
   1250 			config->wowlan_triggers);
   1251 
   1252 	if (config->bgscan)
   1253 		fprintf(f, "bgscan=\"%s\"\n", config->bgscan);
   1254 
   1255 	if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
   1256 		fprintf(f, "p2p_search_delay=%u\n",
   1257 			config->p2p_search_delay);
   1258 
   1259 	if (config->mac_addr)
   1260 		fprintf(f, "mac_addr=%d\n", config->mac_addr);
   1261 
   1262 	if (config->rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
   1263 		fprintf(f, "rand_addr_lifetime=%u\n",
   1264 			config->rand_addr_lifetime);
   1265 
   1266 	if (config->preassoc_mac_addr)
   1267 		fprintf(f, "preassoc_mac_addr=%d\n", config->preassoc_mac_addr);
   1268 
   1269 	if (config->key_mgmt_offload != DEFAULT_KEY_MGMT_OFFLOAD)
   1270 		fprintf(f, "key_mgmt_offload=%d\n", config->key_mgmt_offload);
   1271 
   1272 	if (config->user_mpm != DEFAULT_USER_MPM)
   1273 		fprintf(f, "user_mpm=%d\n", config->user_mpm);
   1274 
   1275 	if (config->max_peer_links != DEFAULT_MAX_PEER_LINKS)
   1276 		fprintf(f, "max_peer_links=%d\n", config->max_peer_links);
   1277 
   1278 	if (config->cert_in_cb != DEFAULT_CERT_IN_CB)
   1279 		fprintf(f, "cert_in_cb=%d\n", config->cert_in_cb);
   1280 
   1281 	if (config->mesh_max_inactivity != DEFAULT_MESH_MAX_INACTIVITY)
   1282 		fprintf(f, "mesh_max_inactivity=%d\n",
   1283 			config->mesh_max_inactivity);
   1284 
   1285 	if (config->passive_scan)
   1286 		fprintf(f, "passive_scan=%d\n", config->passive_scan);
   1287 
   1288 	if (config->reassoc_same_bss_optim)
   1289 		fprintf(f, "reassoc_same_bss_optim=%d\n",
   1290 			config->reassoc_same_bss_optim);
   1291 
   1292 	if (config->wps_priority)
   1293 		fprintf(f, "wps_priority=%d\n", config->wps_priority);
   1294 }
   1295 
   1296 #endif /* CONFIG_NO_CONFIG_WRITE */
   1297 
   1298 
   1299 int wpa_config_write(const char *name, struct wpa_config *config)
   1300 {
   1301 #ifndef CONFIG_NO_CONFIG_WRITE
   1302 	FILE *f;
   1303 	struct wpa_ssid *ssid;
   1304 	struct wpa_cred *cred;
   1305 #ifndef CONFIG_NO_CONFIG_BLOBS
   1306 	struct wpa_config_blob *blob;
   1307 #endif /* CONFIG_NO_CONFIG_BLOBS */
   1308 	int ret = 0;
   1309 	const char *orig_name = name;
   1310 	int tmp_len = os_strlen(name) + 5; /* allow space for .tmp suffix */
   1311 	char *tmp_name = os_malloc(tmp_len);
   1312 
   1313 	if (tmp_name) {
   1314 		os_snprintf(tmp_name, tmp_len, "%s.tmp", name);
   1315 		name = tmp_name;
   1316 	}
   1317 
   1318 	wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
   1319 
   1320 	f = fopen(name, "w");
   1321 	if (f == NULL) {
   1322 		wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
   1323 		os_free(tmp_name);
   1324 		return -1;
   1325 	}
   1326 
   1327 	wpa_config_write_global(f, config);
   1328 
   1329 	for (cred = config->cred; cred; cred = cred->next) {
   1330 		if (cred->temporary)
   1331 			continue;
   1332 		fprintf(f, "\ncred={\n");
   1333 		wpa_config_write_cred(f, cred);
   1334 		fprintf(f, "}\n");
   1335 	}
   1336 
   1337 	for (ssid = config->ssid; ssid; ssid = ssid->next) {
   1338 		if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
   1339 			continue; /* do not save temporary networks */
   1340 		if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
   1341 		    !ssid->passphrase)
   1342 			continue; /* do not save invalid network */
   1343 		fprintf(f, "\nnetwork={\n");
   1344 		wpa_config_write_network(f, ssid);
   1345 		fprintf(f, "}\n");
   1346 	}
   1347 
   1348 #ifndef CONFIG_NO_CONFIG_BLOBS
   1349 	for (blob = config->blobs; blob; blob = blob->next) {
   1350 		ret = wpa_config_write_blob(f, blob);
   1351 		if (ret)
   1352 			break;
   1353 	}
   1354 #endif /* CONFIG_NO_CONFIG_BLOBS */
   1355 
   1356 	os_fsync(f);
   1357 
   1358 	fclose(f);
   1359 
   1360 	if (tmp_name) {
   1361 		int chmod_ret = 0;
   1362 
   1363 #ifdef ANDROID
   1364 		chmod_ret = chmod(tmp_name,
   1365 				  S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
   1366 #endif /* ANDROID */
   1367 		if (chmod_ret != 0 || rename(tmp_name, orig_name) != 0)
   1368 			ret = -1;
   1369 
   1370 		os_free(tmp_name);
   1371 	}
   1372 
   1373 	wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
   1374 		   orig_name, ret ? "un" : "");
   1375 	return ret;
   1376 #else /* CONFIG_NO_CONFIG_WRITE */
   1377 	return -1;
   1378 #endif /* CONFIG_NO_CONFIG_WRITE */
   1379 }
   1380