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