text: /*
   * WPA Supplicant / Configuration parser and common functions
   * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   */
  
  #include "includes.h"
  
  #include "common.h"
  #include "utils/uuid.h"
  #include "utils/ip_addr.h"
  #include "crypto/sha1.h"
  #include "rsn_supp/wpa.h"
  #include "eap_peer/eap.h"
  #include "p2p/p2p.h"
  #include "fst/fst.h"
  #include "config.h"
  
  
  #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
  #define NO_CONFIG_WRITE
  #endif
  
  /*
   * Structure for network configuration parsing. This data is used to implement
   * a generic parser for each network block variable. The table of configuration
   * variables is defined below in this file (ssid_fields[]).
   */
  struct parse_data {
  	/* Configuration variable name */
  	char *name;
  
  	/* Parser function for this variable */
  	int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
  		      int line, const char *value);
  
  #ifndef NO_CONFIG_WRITE
  	/* Writer function (i.e., to get the variable in text format from
  	 * internal presentation). */
  	char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
  #endif /* NO_CONFIG_WRITE */
  
  	/* Variable specific parameters for the parser. */
  	void *param1, *param2, *param3, *param4;
  
  	/* 0 = this variable can be included in debug output and ctrl_iface
  	 * 1 = this variable contains key/private data and it must not be
  	 *     included in debug output unless explicitly requested. In
  	 *     addition, this variable will not be readable through the
  	 *     ctrl_iface.
  	 */
  	int key_data;
  };
  
  
  static int wpa_config_parse_str(const struct parse_data *data,
  				struct wpa_ssid *ssid,
  				int line, const char *value)
  {
  	size_t res_len, *dst_len;
  	char **dst, *tmp;
  
  	if (os_strcmp(value, "NULL") == 0) {
  		wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
  			   data->name);
  		tmp = NULL;
  		res_len = 0;
  		goto set;
  	}
  
  	tmp = wpa_config_parse_string(value, &res_len);
  	if (tmp == NULL) {
  		wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
  			   line, data->name,
  			   data->key_data ? "[KEY DATA REMOVED]" : value);
  		return -1;
  	}
  
  	if (data->key_data) {
  		wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  				      (u8 *) tmp, res_len);
  	} else {
  		wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
  				  (u8 *) tmp, res_len);
  	}
  
  	if (data->param3 && res_len < (size_t) data->param3) {
  		wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  			   "min_len=%ld)", line, data->name,
  			   (unsigned long) res_len, (long) data->param3);
  		os_free(tmp);
  		return -1;
  	}
  
  	if (data->param4 && res_len > (size_t) data->param4) {
  		wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  			   "max_len=%ld)", line, data->name,
  			   (unsigned long) res_len, (long) data->param4);
  		os_free(tmp);
  		return -1;
  	}
  
  set:
  	dst = (char **) (((u8 *) ssid) + (long) data->param1);
  	dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
  	os_free(*dst);
  	*dst = tmp;
  	if (data->param2)
  		*dst_len = res_len;
  
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
  {
  	char *buf;
  
  	buf = os_malloc(len + 3);
  	if (buf == NULL)
  		return NULL;
  	buf[0] = '"';
  	os_memcpy(buf + 1, value, len);
  	buf[len + 1] = '"';
  	buf[len + 2] = '\0';
  
  	return buf;
  }
  
  
  static char * wpa_config_write_string_hex(const u8 *value, size_t len)
  {
  	char *buf;
  
  	buf = os_zalloc(2 * len + 1);
  	if (buf == NULL)
  		return NULL;
  	wpa_snprintf_hex(buf, 2 * len + 1, value, len);
  
  	return buf;
  }
  
  
  static char * wpa_config_write_string(const u8 *value, size_t len)
  {
  	if (value == NULL)
  		return NULL;
  
  	if (is_hex(value, len))
  		return wpa_config_write_string_hex(value, len);
  	else
  		return wpa_config_write_string_ascii(value, len);
  }
  
  
  static char * wpa_config_write_str(const struct parse_data *data,
  				   struct wpa_ssid *ssid)
  {
  	size_t len;
  	char **src;
  
  	src = (char **) (((u8 *) ssid) + (long) data->param1);
  	if (*src == NULL)
  		return NULL;
  
  	if (data->param2)
  		len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
  	else
  		len = os_strlen(*src);
  
  	return wpa_config_write_string((const u8 *) *src, len);
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_int(const struct parse_data *data,
  				struct wpa_ssid *ssid,
  				int line, const char *value)
  {
  	int val, *dst;
  	char *end;
  
  	dst = (int *) (((u8 *) ssid) + (long) data->param1);
  	val = strtol(value, &end, 0);
  	if (*end) {
  		wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
  			   line, value);
  		return -1;
  	}
  	*dst = val;
  	wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
  
  	if (data->param3 && *dst < (long) data->param3) {
  		wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
  			   "min_value=%ld)", line, data->name, *dst,
  			   (long) data->param3);
  		*dst = (long) data->param3;
  		return -1;
  	}
  
  	if (data->param4 && *dst > (long) data->param4) {
  		wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
  			   "max_value=%ld)", line, data->name, *dst,
  			   (long) data->param4);
  		*dst = (long) data->param4;
  		return -1;
  	}
  
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_int(const struct parse_data *data,
  				   struct wpa_ssid *ssid)
  {
  	int *src, res;
  	char *value;
  
  	src = (int *) (((u8 *) ssid) + (long) data->param1);
  
  	value = os_malloc(20);
  	if (value == NULL)
  		return NULL;
  	res = os_snprintf(value, 20, "%d", *src);
  	if (os_snprintf_error(20, res)) {
  		os_free(value);
  		return NULL;
  	}
  	value[20 - 1] = '\0';
  	return value;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_addr_list(const struct parse_data *data,
  				      int line, const char *value,
  				      u8 **list, size_t *num, char *name,
  				      u8 abort_on_error, u8 masked)
  {
  	const char *pos;
  	u8 *buf, *n, addr[2 * ETH_ALEN];
  	size_t count;
  
  	buf = NULL;
  	count = 0;
  
  	pos = value;
  	while (pos && *pos) {
  		while (*pos == ' ')
  			pos++;
  
  		if (hwaddr_masked_aton(pos, addr, &addr[ETH_ALEN], masked)) {
  			if (abort_on_error || count == 0) {
  				wpa_printf(MSG_ERROR,
  					   "Line %d: Invalid %s address '%s'",
  					   line, name, value);
  				os_free(buf);
  				return -1;
  			}
  			/* continue anyway since this could have been from a
  			 * truncated configuration file line */
  			wpa_printf(MSG_INFO,
  				   "Line %d: Ignore likely truncated %s address '%s'",
  				   line, name, pos);
  		} else {
  			n = os_realloc_array(buf, count + 1, 2 * ETH_ALEN);
  			if (n == NULL) {
  				os_free(buf);
  				return -1;
  			}
  			buf = n;
  			os_memmove(buf + 2 * ETH_ALEN, buf,
  				   count * 2 * ETH_ALEN);
  			os_memcpy(buf, addr, 2 * ETH_ALEN);
  			count++;
  			wpa_printf(MSG_MSGDUMP,
  				   "%s: addr=" MACSTR " mask=" MACSTR,
  				   name, MAC2STR(addr),
  				   MAC2STR(&addr[ETH_ALEN]));
  		}
  
  		pos = os_strchr(pos, ' ');
  	}
  
  	os_free(*list);
  	*list = buf;
  	*num = count;
  
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_addr_list(const struct parse_data *data,
  					 const u8 *list, size_t num, char *name)
  {
  	char *value, *end, *pos;
  	int res;
  	size_t i;
  
  	if (list == NULL || num == 0)
  		return NULL;
  
  	value = os_malloc(2 * 20 * num);
  	if (value == NULL)
  		return NULL;
  	pos = value;
  	end = value + 2 * 20 * num;
  
  	for (i = num; i > 0; i--) {
  		const u8 *a = list + (i - 1) * 2 * ETH_ALEN;
  		const u8 *m = a + ETH_ALEN;
  
  		if (i < num)
  			*pos++ = ' ';
  		res = hwaddr_mask_txt(pos, end - pos, a, m);
  		if (res < 0) {
  			os_free(value);
  			return NULL;
  		}
  		pos += res;
  	}
  
  	return value;
  }
  #endif /* NO_CONFIG_WRITE */
  
  static int wpa_config_parse_bssid(const struct parse_data *data,
  				  struct wpa_ssid *ssid, int line,
  				  const char *value)
  {
  	if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
  	    os_strcmp(value, "any") == 0) {
  		ssid->bssid_set = 0;
  		wpa_printf(MSG_MSGDUMP, "BSSID any");
  		return 0;
  	}
  	if (hwaddr_aton(value, ssid->bssid)) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
  			   line, value);
  		return -1;
  	}
  	ssid->bssid_set = 1;
  	wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_bssid(const struct parse_data *data,
  				     struct wpa_ssid *ssid)
  {
  	char *value;
  	int res;
  
  	if (!ssid->bssid_set)
  		return NULL;
  
  	value = os_malloc(20);
  	if (value == NULL)
  		return NULL;
  	res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
  	if (os_snprintf_error(20, res)) {
  		os_free(value);
  		return NULL;
  	}
  	value[20 - 1] = '\0';
  	return value;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_bssid_blacklist(const struct parse_data *data,
  					    struct wpa_ssid *ssid, int line,
  					    const char *value)
  {
  	return wpa_config_parse_addr_list(data, line, value,
  					  &ssid->bssid_blacklist,
  					  &ssid->num_bssid_blacklist,
  					  "bssid_blacklist", 1, 1);
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_bssid_blacklist(const struct parse_data *data,
  					       struct wpa_ssid *ssid)
  {
  	return wpa_config_write_addr_list(data, ssid->bssid_blacklist,
  					  ssid->num_bssid_blacklist,
  					  "bssid_blacklist");
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_bssid_whitelist(const struct parse_data *data,
  					    struct wpa_ssid *ssid, int line,
  					    const char *value)
  {
  	return wpa_config_parse_addr_list(data, line, value,
  					  &ssid->bssid_whitelist,
  					  &ssid->num_bssid_whitelist,
  					  "bssid_whitelist", 1, 1);
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_bssid_whitelist(const struct parse_data *data,
  					       struct wpa_ssid *ssid)
  {
  	return wpa_config_write_addr_list(data, ssid->bssid_whitelist,
  					  ssid->num_bssid_whitelist,
  					  "bssid_whitelist");
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_psk(const struct parse_data *data,
  				struct wpa_ssid *ssid, int line,
  				const char *value)
  {
  #ifdef CONFIG_EXT_PASSWORD
  	if (os_strncmp(value, "ext:", 4) == 0) {
  		str_clear_free(ssid->passphrase);
  		ssid->passphrase = NULL;
  		ssid->psk_set = 0;
  		os_free(ssid->ext_psk);
  		ssid->ext_psk = os_strdup(value + 4);
  		if (ssid->ext_psk == NULL)
  			return -1;
  		wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
  			   ssid->ext_psk);
  		return 0;
  	}
  #endif /* CONFIG_EXT_PASSWORD */
  
  	if (*value == '"') {
  #ifndef CONFIG_NO_PBKDF2
  		const char *pos;
  		size_t len;
  
  		value++;
  		pos = os_strrchr(value, '"');
  		if (pos)
  			len = pos - value;
  		else
  			len = os_strlen(value);
  		if (len < 8 || len > 63) {
  			wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
  				   "length %lu (expected: 8..63) '%s'.",
  				   line, (unsigned long) len, value);
  			return -1;
  		}
  		wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
  				      (u8 *) value, len);
  		if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
  		    os_memcmp(ssid->passphrase, value, len) == 0)
  			return 0;
  		ssid->psk_set = 0;
  		str_clear_free(ssid->passphrase);
  		ssid->passphrase = dup_binstr(value, len);
  		if (ssid->passphrase == NULL)
  			return -1;
  		return 0;
  #else /* CONFIG_NO_PBKDF2 */
  		wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
  			   "supported.", line);
  		return -1;
  #endif /* CONFIG_NO_PBKDF2 */
  	}
  
  	if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
  	    value[PMK_LEN * 2] != '\0') {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
  			   line, value);
  		return -1;
  	}
  
  	str_clear_free(ssid->passphrase);
  	ssid->passphrase = NULL;
  
  	ssid->psk_set = 1;
  	wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_psk(const struct parse_data *data,
  				   struct wpa_ssid *ssid)
  {
  #ifdef CONFIG_EXT_PASSWORD
  	if (ssid->ext_psk) {
  		size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
  		char *buf = os_malloc(len);
  		int res;
  
  		if (buf == NULL)
  			return NULL;
  		res = os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
  		if (os_snprintf_error(len, res)) {
  			os_free(buf);
  			buf = NULL;
  		}
  		return buf;
  	}
  #endif /* CONFIG_EXT_PASSWORD */
  
  	if (ssid->passphrase)
  		return wpa_config_write_string_ascii(
  			(const u8 *) ssid->passphrase,
  			os_strlen(ssid->passphrase));
  
  	if (ssid->psk_set)
  		return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
  
  	return NULL;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_proto(const struct parse_data *data,
  				  struct wpa_ssid *ssid, int line,
  				  const char *value)
  {
  	int val = 0, last, errors = 0;
  	char *start, *end, *buf;
  
  	buf = os_strdup(value);
  	if (buf == NULL)
  		return -1;
  	start = buf;
  
  	while (*start != '\0') {
  		while (*start == ' ' || *start == '\t')
  			start++;
  		if (*start == '\0')
  			break;
  		end = start;
  		while (*end != ' ' && *end != '\t' && *end != '\0')
  			end++;
  		last = *end == '\0';
  		*end = '\0';
  		if (os_strcmp(start, "WPA") == 0)
  			val |= WPA_PROTO_WPA;
  		else if (os_strcmp(start, "RSN") == 0 ||
  			 os_strcmp(start, "WPA2") == 0)
  			val |= WPA_PROTO_RSN;
  		else if (os_strcmp(start, "OSEN") == 0)
  			val |= WPA_PROTO_OSEN;
  		else {
  			wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
  				   line, start);
  			errors++;
  		}
  
  		if (last)
  			break;
  		start = end + 1;
  	}
  	os_free(buf);
  
  	if (val == 0) {
  		wpa_printf(MSG_ERROR,
  			   "Line %d: no proto values configured.", line);
  		errors++;
  	}
  
  	wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
  	ssid->proto = val;
  	return errors ? -1 : 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_proto(const struct parse_data *data,
  				     struct wpa_ssid *ssid)
  {
  	int ret;
  	char *buf, *pos, *end;
  
  	pos = buf = os_zalloc(20);
  	if (buf == NULL)
  		return NULL;
  	end = buf + 20;
  
  	if (ssid->proto & WPA_PROTO_WPA) {
  		ret = os_snprintf(pos, end - pos, "%sWPA",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret))
  			return buf;
  		pos += ret;
  	}
  
  	if (ssid->proto & WPA_PROTO_RSN) {
  		ret = os_snprintf(pos, end - pos, "%sRSN",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret))
  			return buf;
  		pos += ret;
  	}
  
  	if (ssid->proto & WPA_PROTO_OSEN) {
  		ret = os_snprintf(pos, end - pos, "%sOSEN",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret))
  			return buf;
  		pos += ret;
  	}
  
  	if (pos == buf) {
  		os_free(buf);
  		buf = NULL;
  	}
  
  	return buf;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_key_mgmt(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	int val = 0, last, errors = 0;
  	char *start, *end, *buf;
  
  	buf = os_strdup(value);
  	if (buf == NULL)
  		return -1;
  	start = buf;
  
  	while (*start != '\0') {
  		while (*start == ' ' || *start == '\t')
  			start++;
  		if (*start == '\0')
  			break;
  		end = start;
  		while (*end != ' ' && *end != '\t' && *end != '\0')
  			end++;
  		last = *end == '\0';
  		*end = '\0';
  		if (os_strcmp(start, "WPA-PSK") == 0)
  			val |= WPA_KEY_MGMT_PSK;
  		else if (os_strcmp(start, "WPA-EAP") == 0)
  			val |= WPA_KEY_MGMT_IEEE8021X;
  		else if (os_strcmp(start, "IEEE8021X") == 0)
  			val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
  		else if (os_strcmp(start, "NONE") == 0)
  			val |= WPA_KEY_MGMT_NONE;
  		else if (os_strcmp(start, "WPA-NONE") == 0)
  			val |= WPA_KEY_MGMT_WPA_NONE;
  #ifdef CONFIG_IEEE80211R
  		else if (os_strcmp(start, "FT-PSK") == 0)
  			val |= WPA_KEY_MGMT_FT_PSK;
  		else if (os_strcmp(start, "FT-EAP") == 0)
  			val |= WPA_KEY_MGMT_FT_IEEE8021X;
  #endif /* CONFIG_IEEE80211R */
  #ifdef CONFIG_IEEE80211W
  		else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
  			val |= WPA_KEY_MGMT_PSK_SHA256;
  		else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
  			val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
  #endif /* CONFIG_IEEE80211W */
  #ifdef CONFIG_WPS
  		else if (os_strcmp(start, "WPS") == 0)
  			val |= WPA_KEY_MGMT_WPS;
  #endif /* CONFIG_WPS */
  #ifdef CONFIG_SAE
  		else if (os_strcmp(start, "SAE") == 0)
  			val |= WPA_KEY_MGMT_SAE;
  		else if (os_strcmp(start, "FT-SAE") == 0)
  			val |= WPA_KEY_MGMT_FT_SAE;
  #endif /* CONFIG_SAE */
  #ifdef CONFIG_HS20
  		else if (os_strcmp(start, "OSEN") == 0)
  			val |= WPA_KEY_MGMT_OSEN;
  #endif /* CONFIG_HS20 */
  #ifdef CONFIG_SUITEB
  		else if (os_strcmp(start, "WPA-EAP-SUITE-B") == 0)
  			val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B;
  #endif /* CONFIG_SUITEB */
  #ifdef CONFIG_SUITEB192
  		else if (os_strcmp(start, "WPA-EAP-SUITE-B-192") == 0)
  			val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
  #endif /* CONFIG_SUITEB192 */
  		else {
  			wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
  				   line, start);
  			errors++;
  		}
  
  		if (last)
  			break;
  		start = end + 1;
  	}
  	os_free(buf);
  
  	if (val == 0) {
  		wpa_printf(MSG_ERROR,
  			   "Line %d: no key_mgmt values configured.", line);
  		errors++;
  	}
  
  	wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
  	ssid->key_mgmt = val;
  	return errors ? -1 : 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_key_mgmt(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	char *buf, *pos, *end;
  	int ret;
  
  	pos = buf = os_zalloc(100);
  	if (buf == NULL)
  		return NULL;
  	end = buf + 100;
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
  		ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
  		ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
  		ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
  		ret = os_snprintf(pos, end - pos, "%sNONE",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
  		ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  #ifdef CONFIG_IEEE80211R
  	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
  		ret = os_snprintf(pos, end - pos, "%sFT-PSK",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
  		ret = os_snprintf(pos, end - pos, "%sFT-EAP",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  #endif /* CONFIG_IEEE80211R */
  
  #ifdef CONFIG_IEEE80211W
  	if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
  		ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
  		ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  #endif /* CONFIG_IEEE80211W */
  
  #ifdef CONFIG_WPS
  	if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
  		ret = os_snprintf(pos, end - pos, "%sWPS",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  #endif /* CONFIG_WPS */
  
  #ifdef CONFIG_SAE
  	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
  		ret = os_snprintf(pos, end - pos, "%sSAE",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_SAE) {
  		ret = os_snprintf(pos, end - pos, "%sFT-SAE",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  #endif /* CONFIG_SAE */
  
  #ifdef CONFIG_HS20
  	if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) {
  		ret = os_snprintf(pos, end - pos, "%sOSEN",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  #endif /* CONFIG_HS20 */
  
  #ifdef CONFIG_SUITEB
  	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
  		ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  #endif /* CONFIG_SUITEB */
  
  #ifdef CONFIG_SUITEB192
  	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
  		ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B-192",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  #endif /* CONFIG_SUITEB192 */
  
  	if (pos == buf) {
  		os_free(buf);
  		buf = NULL;
  	}
  
  	return buf;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_cipher(int line, const char *value)
  {
  	int val = wpa_parse_cipher(value);
  	if (val < 0) {
  		wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
  			   line, value);
  		return -1;
  	}
  	if (val == 0) {
  		wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
  			   line);
  		return -1;
  	}
  	return val;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_cipher(int cipher)
  {
  	char *buf = os_zalloc(50);
  	if (buf == NULL)
  		return NULL;
  
  	if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
  		os_free(buf);
  		return NULL;
  	}
  
  	return buf;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_pairwise(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	int val;
  	val = wpa_config_parse_cipher(line, value);
  	if (val == -1)
  		return -1;
  	if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
  		wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
  			   "(0x%x).", line, val);
  		return -1;
  	}
  
  	wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
  	ssid->pairwise_cipher = val;
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_pairwise(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	return wpa_config_write_cipher(ssid->pairwise_cipher);
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_group(const struct parse_data *data,
  				  struct wpa_ssid *ssid, int line,
  				  const char *value)
  {
  	int val;
  	val = wpa_config_parse_cipher(line, value);
  	if (val == -1)
  		return -1;
  
  	/*
  	 * Backwards compatibility - filter out WEP ciphers that were previously
  	 * allowed.
  	 */
  	val &= ~(WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40);
  
  	if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
  		wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
  			   "(0x%x).", line, val);
  		return -1;
  	}
  
  	wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
  	ssid->group_cipher = val;
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_group(const struct parse_data *data,
  				     struct wpa_ssid *ssid)
  {
  	return wpa_config_write_cipher(ssid->group_cipher);
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_auth_alg(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	int val = 0, last, errors = 0;
  	char *start, *end, *buf;
  
  	buf = os_strdup(value);
  	if (buf == NULL)
  		return -1;
  	start = buf;
  
  	while (*start != '\0') {
  		while (*start == ' ' || *start == '\t')
  			start++;
  		if (*start == '\0')
  			break;
  		end = start;
  		while (*end != ' ' && *end != '\t' && *end != '\0')
  			end++;
  		last = *end == '\0';
  		*end = '\0';
  		if (os_strcmp(start, "OPEN") == 0)
  			val |= WPA_AUTH_ALG_OPEN;
  		else if (os_strcmp(start, "SHARED") == 0)
  			val |= WPA_AUTH_ALG_SHARED;
  		else if (os_strcmp(start, "LEAP") == 0)
  			val |= WPA_AUTH_ALG_LEAP;
  		else {
  			wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
  				   line, start);
  			errors++;
  		}
  
  		if (last)
  			break;
  		start = end + 1;
  	}
  	os_free(buf);
  
  	if (val == 0) {
  		wpa_printf(MSG_ERROR,
  			   "Line %d: no auth_alg values configured.", line);
  		errors++;
  	}
  
  	wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
  	ssid->auth_alg = val;
  	return errors ? -1 : 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_auth_alg(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	char *buf, *pos, *end;
  	int ret;
  
  	pos = buf = os_zalloc(30);
  	if (buf == NULL)
  		return NULL;
  	end = buf + 30;
  
  	if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
  		ret = os_snprintf(pos, end - pos, "%sOPEN",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
  		ret = os_snprintf(pos, end - pos, "%sSHARED",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
  		ret = os_snprintf(pos, end - pos, "%sLEAP",
  				  pos == buf ? "" : " ");
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	if (pos == buf) {
  		os_free(buf);
  		buf = NULL;
  	}
  
  	return buf;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int * wpa_config_parse_int_array(const char *value)
  {
  	int *freqs;
  	size_t used, len;
  	const char *pos;
  
  	used = 0;
  	len = 10;
  	freqs = os_calloc(len + 1, sizeof(int));
  	if (freqs == NULL)
  		return NULL;
  
  	pos = value;
  	while (pos) {
  		while (*pos == ' ')
  			pos++;
  		if (used == len) {
  			int *n;
  			size_t i;
  			n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
  			if (n == NULL) {
  				os_free(freqs);
  				return NULL;
  			}
  			for (i = len; i <= len * 2; i++)
  				n[i] = 0;
  			freqs = n;
  			len *= 2;
  		}
  
  		freqs[used] = atoi(pos);
  		if (freqs[used] == 0)
  			break;
  		used++;
  		pos = os_strchr(pos + 1, ' ');
  	}
  
  	return freqs;
  }
  
  
  static int wpa_config_parse_scan_freq(const struct parse_data *data,
  				      struct wpa_ssid *ssid, int line,
  				      const char *value)
  {
  	int *freqs;
  
  	freqs = wpa_config_parse_int_array(value);
  	if (freqs == NULL)
  		return -1;
  	if (freqs[0] == 0) {
  		os_free(freqs);
  		freqs = NULL;
  	}
  	os_free(ssid->scan_freq);
  	ssid->scan_freq = freqs;
  
  	return 0;
  }
  
  
  static int wpa_config_parse_freq_list(const struct parse_data *data,
  				      struct wpa_ssid *ssid, int line,
  				      const char *value)
  {
  	int *freqs;
  
  	freqs = wpa_config_parse_int_array(value);
  	if (freqs == NULL)
  		return -1;
  	if (freqs[0] == 0) {
  		os_free(freqs);
  		freqs = NULL;
  	}
  	os_free(ssid->freq_list);
  	ssid->freq_list = freqs;
  
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_freqs(const struct parse_data *data,
  				     const int *freqs)
  {
  	char *buf, *pos, *end;
  	int i, ret;
  	size_t count;
  
  	if (freqs == NULL)
  		return NULL;
  
  	count = 0;
  	for (i = 0; freqs[i]; i++)
  		count++;
  
  	pos = buf = os_zalloc(10 * count + 1);
  	if (buf == NULL)
  		return NULL;
  	end = buf + 10 * count + 1;
  
  	for (i = 0; freqs[i]; i++) {
  		ret = os_snprintf(pos, end - pos, "%s%u",
  				  i == 0 ? "" : " ", freqs[i]);
  		if (os_snprintf_error(end - pos, ret)) {
  			end[-1] = '\0';
  			return buf;
  		}
  		pos += ret;
  	}
  
  	return buf;
  }
  
  
  static char * wpa_config_write_scan_freq(const struct parse_data *data,
  					 struct wpa_ssid *ssid)
  {
  	return wpa_config_write_freqs(data, ssid->scan_freq);
  }
  
  
  static char * wpa_config_write_freq_list(const struct parse_data *data,
  					 struct wpa_ssid *ssid)
  {
  	return wpa_config_write_freqs(data, ssid->freq_list);
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  #ifdef IEEE8021X_EAPOL
  static int wpa_config_parse_eap(const struct parse_data *data,
  				struct wpa_ssid *ssid, int line,
  				const char *value)
  {
  	int last, errors = 0;
  	char *start, *end, *buf;
  	struct eap_method_type *methods = NULL, *tmp;
  	size_t num_methods = 0;
  
  	buf = os_strdup(value);
  	if (buf == NULL)
  		return -1;
  	start = buf;
  
  	while (*start != '\0') {
  		while (*start == ' ' || *start == '\t')
  			start++;
  		if (*start == '\0')
  			break;
  		end = start;
  		while (*end != ' ' && *end != '\t' && *end != '\0')
  			end++;
  		last = *end == '\0';
  		*end = '\0';
  		tmp = methods;
  		methods = os_realloc_array(methods, num_methods + 1,
  					   sizeof(*methods));
  		if (methods == NULL) {
  			os_free(tmp);
  			os_free(buf);
  			return -1;
  		}
  		methods[num_methods].method = eap_peer_get_type(
  			start, &methods[num_methods].vendor);
  		if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
  		    methods[num_methods].method == EAP_TYPE_NONE) {
  			wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
  				   "'%s'", line, start);
  			wpa_printf(MSG_ERROR, "You may need to add support for"
  				   " this EAP method during wpa_supplicant\n"
  				   "build time configuration.\n"
  				   "See README for more information.");
  			errors++;
  		} else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
  			   methods[num_methods].method == EAP_TYPE_LEAP)
  			ssid->leap++;
  		else
  			ssid->non_leap++;
  		num_methods++;
  		if (last)
  			break;
  		start = end + 1;
  	}
  	os_free(buf);
  
  	tmp = methods;
  	methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
  	if (methods == NULL) {
  		os_free(tmp);
  		return -1;
  	}
  	methods[num_methods].vendor = EAP_VENDOR_IETF;
  	methods[num_methods].method = EAP_TYPE_NONE;
  	num_methods++;
  
  	wpa_hexdump(MSG_MSGDUMP, "eap methods",
  		    (u8 *) methods, num_methods * sizeof(*methods));
  	os_free(ssid->eap.eap_methods);
  	ssid->eap.eap_methods = methods;
  	return errors ? -1 : 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_eap(const struct parse_data *data,
  				   struct wpa_ssid *ssid)
  {
  	int i, ret;
  	char *buf, *pos, *end;
  	const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
  	const char *name;
  
  	if (eap_methods == NULL)
  		return NULL;
  
  	pos = buf = os_zalloc(100);
  	if (buf == NULL)
  		return NULL;
  	end = buf + 100;
  
  	for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
  		     eap_methods[i].method != EAP_TYPE_NONE; i++) {
  		name = eap_get_name(eap_methods[i].vendor,
  				    eap_methods[i].method);
  		if (name) {
  			ret = os_snprintf(pos, end - pos, "%s%s",
  					  pos == buf ? "" : " ", name);
  			if (os_snprintf_error(end - pos, ret))
  				break;
  			pos += ret;
  		}
  	}
  
  	end[-1] = '\0';
  
  	return buf;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_password(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	u8 *hash;
  
  	if (os_strcmp(value, "NULL") == 0) {
  		wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
  		bin_clear_free(ssid->eap.password, ssid->eap.password_len);
  		ssid->eap.password = NULL;
  		ssid->eap.password_len = 0;
  		return 0;
  	}
  
  #ifdef CONFIG_EXT_PASSWORD
  	if (os_strncmp(value, "ext:", 4) == 0) {
  		char *name = os_strdup(value + 4);
  		if (name == NULL)
  			return -1;
  		bin_clear_free(ssid->eap.password, ssid->eap.password_len);
  		ssid->eap.password = (u8 *) name;
  		ssid->eap.password_len = os_strlen(name);
  		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
  		ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
  		return 0;
  	}
  #endif /* CONFIG_EXT_PASSWORD */
  
  	if (os_strncmp(value, "hash:", 5) != 0) {
  		char *tmp;
  		size_t res_len;
  
  		tmp = wpa_config_parse_string(value, &res_len);
  		if (tmp == NULL) {
  			wpa_printf(MSG_ERROR, "Line %d: failed to parse "
  				   "password.", line);
  			return -1;
  		}
  		wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  				      (u8 *) tmp, res_len);
  
  		bin_clear_free(ssid->eap.password, ssid->eap.password_len);
  		ssid->eap.password = (u8 *) tmp;
  		ssid->eap.password_len = res_len;
  		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
  		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
  
  		return 0;
  	}
  
  
  	/* NtPasswordHash: hash:<32 hex digits> */
  	if (os_strlen(value + 5) != 2 * 16) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
  			   "(expected 32 hex digits)", line);
  		return -1;
  	}
  
  	hash = os_malloc(16);
  	if (hash == NULL)
  		return -1;
  
  	if (hexstr2bin(value + 5, hash, 16)) {
  		os_free(hash);
  		wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
  		return -1;
  	}
  
  	wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
  
  	bin_clear_free(ssid->eap.password, ssid->eap.password_len);
  	ssid->eap.password = hash;
  	ssid->eap.password_len = 16;
  	ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
  	ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
  
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_password(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	char *buf;
  
  	if (ssid->eap.password == NULL)
  		return NULL;
  
  #ifdef CONFIG_EXT_PASSWORD
  	if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
  		buf = os_zalloc(4 + ssid->eap.password_len + 1);
  		if (buf == NULL)
  			return NULL;
  		os_memcpy(buf, "ext:", 4);
  		os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
  		return buf;
  	}
  #endif /* CONFIG_EXT_PASSWORD */
  
  	if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
  		return wpa_config_write_string(
  			ssid->eap.password, ssid->eap.password_len);
  	}
  
  	buf = os_malloc(5 + 32 + 1);
  	if (buf == NULL)
  		return NULL;
  
  	os_memcpy(buf, "hash:", 5);
  	wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
  
  	return buf;
  }
  #endif /* NO_CONFIG_WRITE */
  #endif /* IEEE8021X_EAPOL */
  
  
  static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
  				    const char *value, int idx)
  {
  	char *buf, title[20];
  	int res;
  
  	buf = wpa_config_parse_string(value, len);
  	if (buf == NULL) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
  			   line, idx, value);
  		return -1;
  	}
  	if (*len > MAX_WEP_KEY_LEN) {
  		wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
  			   line, idx, value);
  		os_free(buf);
  		return -1;
  	}
  	if (*len && *len != 5 && *len != 13 && *len != 16) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
  			   "this network block will be ignored",
  			   line, (unsigned int) *len);
  	}
  	os_memcpy(key, buf, *len);
  	str_clear_free(buf);
  	res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
  	if (!os_snprintf_error(sizeof(title), res))
  		wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
  	return 0;
  }
  
  
  static int wpa_config_parse_wep_key0(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	return wpa_config_parse_wep_key(ssid->wep_key[0],
  					&ssid->wep_key_len[0], line,
  					value, 0);
  }
  
  
  static int wpa_config_parse_wep_key1(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	return wpa_config_parse_wep_key(ssid->wep_key[1],
  					&ssid->wep_key_len[1], line,
  					value, 1);
  }
  
  
  static int wpa_config_parse_wep_key2(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	return wpa_config_parse_wep_key(ssid->wep_key[2],
  					&ssid->wep_key_len[2], line,
  					value, 2);
  }
  
  
  static int wpa_config_parse_wep_key3(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	return wpa_config_parse_wep_key(ssid->wep_key[3],
  					&ssid->wep_key_len[3], line,
  					value, 3);
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
  {
  	if (ssid->wep_key_len[idx] == 0)
  		return NULL;
  	return wpa_config_write_string(ssid->wep_key[idx],
  				       ssid->wep_key_len[idx]);
  }
  
  
  static char * wpa_config_write_wep_key0(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	return wpa_config_write_wep_key(ssid, 0);
  }
  
  
  static char * wpa_config_write_wep_key1(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	return wpa_config_write_wep_key(ssid, 1);
  }
  
  
  static char * wpa_config_write_wep_key2(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	return wpa_config_write_wep_key(ssid, 2);
  }
  
  
  static char * wpa_config_write_wep_key3(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	return wpa_config_write_wep_key(ssid, 3);
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  #ifdef CONFIG_P2P
  
  static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
  					    struct wpa_ssid *ssid, int line,
  					    const char *value)
  {
  	if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
  	    os_strcmp(value, "any") == 0) {
  		os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
  		wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
  		return 0;
  	}
  	if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
  			   line, value);
  		return -1;
  	}
  	ssid->bssid_set = 1;
  	wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
  		   MAC2STR(ssid->go_p2p_dev_addr));
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
  					       struct wpa_ssid *ssid)
  {
  	char *value;
  	int res;
  
  	if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
  		return NULL;
  
  	value = os_malloc(20);
  	if (value == NULL)
  		return NULL;
  	res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
  	if (os_snprintf_error(20, res)) {
  		os_free(value);
  		return NULL;
  	}
  	value[20 - 1] = '\0';
  	return value;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
  					    struct wpa_ssid *ssid, int line,
  					    const char *value)
  {
  	return wpa_config_parse_addr_list(data, line, value,
  					  &ssid->p2p_client_list,
  					  &ssid->num_p2p_clients,
  					  "p2p_client_list", 0, 0);
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
  					       struct wpa_ssid *ssid)
  {
  	return wpa_config_write_addr_list(data, ssid->p2p_client_list,
  					  ssid->num_p2p_clients,
  					  "p2p_client_list");
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  static int wpa_config_parse_psk_list(const struct parse_data *data,
  				     struct wpa_ssid *ssid, int line,
  				     const char *value)
  {
  	struct psk_list_entry *p;
  	const char *pos;
  
  	p = os_zalloc(sizeof(*p));
  	if (p == NULL)
  		return -1;
  
  	pos = value;
  	if (os_strncmp(pos, "P2P-", 4) == 0) {
  		p->p2p = 1;
  		pos += 4;
  	}
  
  	if (hwaddr_aton(pos, p->addr)) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
  			   line, pos);
  		os_free(p);
  		return -1;
  	}
  	pos += 17;
  	if (*pos != '-') {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
  			   line, pos);
  		os_free(p);
  		return -1;
  	}
  	pos++;
  
  	if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
  			   line, pos);
  		os_free(p);
  		return -1;
  	}
  
  	dl_list_add(&ssid->psk_list, &p->list);
  
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  static char * wpa_config_write_psk_list(const struct parse_data *data,
  					struct wpa_ssid *ssid)
  {
  	return NULL;
  }
  #endif /* NO_CONFIG_WRITE */
  
  #endif /* CONFIG_P2P */
  
  
  #ifdef CONFIG_MESH
  
  static int wpa_config_parse_mesh_basic_rates(const struct parse_data *data,
  					     struct wpa_ssid *ssid, int line,
  					     const char *value)
  {
  	int *rates = wpa_config_parse_int_array(value);
  
  	if (rates == NULL) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid mesh_basic_rates '%s'",
  			   line, value);
  		return -1;
  	}
  	if (rates[0] == 0) {
  		os_free(rates);
  		rates = NULL;
  	}
  
  	os_free(ssid->mesh_basic_rates);
  	ssid->mesh_basic_rates = rates;
  
  	return 0;
  }
  
  
  #ifndef NO_CONFIG_WRITE
  
  static char * wpa_config_write_mesh_basic_rates(const struct parse_data *data,
  						struct wpa_ssid *ssid)
  {
  	return wpa_config_write_freqs(data, ssid->mesh_basic_rates);
  }
  
  #endif /* NO_CONFIG_WRITE */
  
  #endif /* CONFIG_MESH */
  
  
  /* Helper macros for network block parser */
  
  #ifdef OFFSET
  #undef OFFSET
  #endif /* OFFSET */
  /* OFFSET: Get offset of a variable within the wpa_ssid structure */
  #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
  
  /* STR: Define a string variable for an ASCII string; f = field name */
  #ifdef NO_CONFIG_WRITE
  #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
  #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
  #else /* NO_CONFIG_WRITE */
  #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
  #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
  #endif /* NO_CONFIG_WRITE */
  #define STR(f) _STR(f), NULL, NULL, NULL, 0
  #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
  #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
  #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
  
  /* STR_LEN: Define a string variable with a separate variable for storing the
   * data length. Unlike STR(), this can be used to store arbitrary binary data
   * (i.e., even nul termination character). */
  #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
  #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
  #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
  #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
  #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
  
  /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
   * explicitly specified. */
  #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
  #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
  #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
  
  #ifdef NO_CONFIG_WRITE
  #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
  #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
  #else /* NO_CONFIG_WRITE */
  #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
  	OFFSET(f), (void *) 0
  #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
  	OFFSET(eap.f), (void *) 0
  #endif /* NO_CONFIG_WRITE */
  
  /* INT: Define an integer variable */
  #define INT(f) _INT(f), NULL, NULL, 0
  #define INTe(f) _INTe(f), NULL, NULL, 0
  
  /* INT_RANGE: Define an integer variable with allowed value range */
  #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
  
  /* FUNC: Define a configuration variable that uses a custom function for
   * parsing and writing the value. */
  #ifdef NO_CONFIG_WRITE
  #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
  #else /* NO_CONFIG_WRITE */
  #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
  	NULL, NULL, NULL, NULL
  #endif /* NO_CONFIG_WRITE */
  #define FUNC(f) _FUNC(f), 0
  #define FUNC_KEY(f) _FUNC(f), 1
  
  /*
   * Table of network configuration variables. This table is used to parse each
   * network configuration variable, e.g., each line in wpa_supplicant.conf file
   * that is inside a network block.
   *
   * This table is generated using the helper macros defined above and with
   * generous help from the C pre-processor. The field name is stored as a string
   * into .name and for STR and INT types, the offset of the target buffer within
   * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
   * offset to the field containing the length of the configuration variable.
   * .param3 and .param4 can be used to mark the allowed range (length for STR
   * and value for INT).
   *
   * For each configuration line in wpa_supplicant.conf, the parser goes through
   * this table and select the entry that matches with the field name. The parser
   * function (.parser) is then called to parse the actual value of the field.
   *
   * This kind of mechanism makes it easy to add new configuration parameters,
   * since only one line needs to be added into this table and into the
   * struct wpa_ssid definition if the new variable is either a string or
   * integer. More complex types will need to use their own parser and writer
   * functions.
   */
  static const struct parse_data ssid_fields[] = {
  	{ STR_RANGE(ssid, 0, SSID_MAX_LEN) },
  	{ INT_RANGE(scan_ssid, 0, 1) },
  	{ FUNC(bssid) },
  	{ FUNC(bssid_blacklist) },
  	{ FUNC(bssid_whitelist) },
  	{ FUNC_KEY(psk) },
  	{ INT(mem_only_psk) },
  	{ FUNC(proto) },
  	{ FUNC(key_mgmt) },
  	{ INT(bg_scan_period) },
  	{ FUNC(pairwise) },
  	{ FUNC(group) },
  	{ FUNC(auth_alg) },
  	{ FUNC(scan_freq) },
  	{ FUNC(freq_list) },
  #ifdef IEEE8021X_EAPOL
  	{ FUNC(eap) },
  	{ STR_LENe(identity) },
  	{ STR_LENe(anonymous_identity) },
  	{ FUNC_KEY(password) },
  	{ STRe(ca_cert) },
  	{ STRe(ca_path) },
  	{ STRe(client_cert) },
  	{ STRe(private_key) },
  	{ STR_KEYe(private_key_passwd) },
  	{ STRe(dh_file) },
  	{ STRe(subject_match) },
  	{ STRe(altsubject_match) },
  	{ STRe(domain_suffix_match) },
  	{ STRe(domain_match) },
  	{ STRe(ca_cert2) },
  	{ STRe(ca_path2) },
  	{ STRe(client_cert2) },
  	{ STRe(private_key2) },
  	{ STR_KEYe(private_key2_passwd) },
  	{ STRe(dh_file2) },
  	{ STRe(subject_match2) },
  	{ STRe(altsubject_match2) },
  	{ STRe(domain_suffix_match2) },
  	{ STRe(domain_match2) },
  	{ STRe(phase1) },
  	{ STRe(phase2) },
  	{ STRe(pcsc) },
  	{ STR_KEYe(pin) },
  	{ STRe(engine_id) },
  	{ STRe(key_id) },
  	{ STRe(cert_id) },
  	{ STRe(ca_cert_id) },
  	{ STR_KEYe(pin2) },
  	{ STRe(engine2_id) },
  	{ STRe(key2_id) },
  	{ STRe(cert2_id) },
  	{ STRe(ca_cert2_id) },
  	{ INTe(engine) },
  	{ INTe(engine2) },
  	{ INT(eapol_flags) },
  	{ INTe(sim_num) },
  	{ STRe(openssl_ciphers) },
  	{ INTe(erp) },
  #endif /* IEEE8021X_EAPOL */
  	{ FUNC_KEY(wep_key0) },
  	{ FUNC_KEY(wep_key1) },
  	{ FUNC_KEY(wep_key2) },
  	{ FUNC_KEY(wep_key3) },
  	{ INT(wep_tx_keyidx) },
  	{ INT(priority) },
  #ifdef IEEE8021X_EAPOL
  	{ INT(eap_workaround) },
  	{ STRe(pac_file) },
  	{ INTe(fragment_size) },
  	{ INTe(ocsp) },
  #endif /* IEEE8021X_EAPOL */
  #ifdef CONFIG_MESH
  	{ INT_RANGE(mode, 0, 5) },
  	{ INT_RANGE(no_auto_peer, 0, 1) },
  #else /* CONFIG_MESH */
  	{ INT_RANGE(mode, 0, 4) },
  #endif /* CONFIG_MESH */
  	{ INT_RANGE(proactive_key_caching, 0, 1) },
  	{ INT_RANGE(disabled, 0, 2) },
  	{ STR(id_str) },
  #ifdef CONFIG_IEEE80211W
  	{ INT_RANGE(ieee80211w, 0, 2) },
  #endif /* CONFIG_IEEE80211W */
  	{ INT_RANGE(peerkey, 0, 1) },
  	{ INT_RANGE(mixed_cell, 0, 1) },
  	{ INT_RANGE(frequency, 0, 65000) },
  	{ INT_RANGE(fixed_freq, 0, 1) },
  #ifdef CONFIG_MESH
  	{ FUNC(mesh_basic_rates) },
  	{ INT(dot11MeshMaxRetries) },
  	{ INT(dot11MeshRetryTimeout) },
  	{ INT(dot11MeshConfirmTimeout) },
  	{ INT(dot11MeshHoldingTimeout) },
  #endif /* CONFIG_MESH */
  	{ INT(wpa_ptk_rekey) },
  	{ STR(bgscan) },
  	{ INT_RANGE(ignore_broadcast_ssid, 0, 2) },
  #ifdef CONFIG_P2P
  	{ FUNC(go_p2p_dev_addr) },
  	{ FUNC(p2p_client_list) },
  	{ FUNC(psk_list) },
  #endif /* CONFIG_P2P */
  #ifdef CONFIG_HT_OVERRIDES
  	{ INT_RANGE(disable_ht, 0, 1) },
  	{ INT_RANGE(disable_ht40, -1, 1) },
  	{ INT_RANGE(disable_sgi, 0, 1) },
  	{ INT_RANGE(disable_ldpc, 0, 1) },
  	{ INT_RANGE(ht40_intolerant, 0, 1) },
  	{ INT_RANGE(disable_max_amsdu, -1, 1) },
  	{ INT_RANGE(ampdu_factor, -1, 3) },
  	{ INT_RANGE(ampdu_density, -1, 7) },
  	{ STR(ht_mcs) },
  #endif /* CONFIG_HT_OVERRIDES */
  #ifdef CONFIG_VHT_OVERRIDES
  	{ INT_RANGE(disable_vht, 0, 1) },
  	{ INT(vht_capa) },
  	{ INT(vht_capa_mask) },
  	{ INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
  	{ INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
  	{ INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
  	{ INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
  	{ INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
  	{ INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
  	{ INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
  	{ INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
  	{ INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
  #endif /* CONFIG_VHT_OVERRIDES */
  	{ INT(ap_max_inactivity) },
  	{ INT(dtim_period) },
  	{ INT(beacon_int) },
  #ifdef CONFIG_MACSEC
  	{ INT_RANGE(macsec_policy, 0, 1) },
  #endif /* CONFIG_MACSEC */
  #ifdef CONFIG_HS20
  	{ INT(update_identifier) },
  #endif /* CONFIG_HS20 */
  	{ INT_RANGE(mac_addr, 0, 2) },
  };
  
  #undef OFFSET
  #undef _STR
  #undef STR
  #undef STR_KEY
  #undef _STR_LEN
  #undef STR_LEN
  #undef STR_LEN_KEY
  #undef _STR_RANGE
  #undef STR_RANGE
  #undef STR_RANGE_KEY
  #undef _INT
  #undef INT
  #undef INT_RANGE
  #undef _FUNC
  #undef FUNC
  #undef FUNC_KEY
  #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
  
  
  /**
   * wpa_config_add_prio_network - Add a network to priority lists
   * @config: Configuration data from wpa_config_read()
   * @ssid: Pointer to the network configuration to be added to the list
   * Returns: 0 on success, -1 on failure
   *
   * This function is used to add a network block to the priority list of
   * networks. This must be called for each network when reading in the full
   * configuration. In addition, this can be used indirectly when updating
   * priorities by calling wpa_config_update_prio_list().
   */
  int wpa_config_add_prio_network(struct wpa_config *config,
  				struct wpa_ssid *ssid)
  {
  	int prio;
  	struct wpa_ssid *prev, **nlist;
  
  	/*
  	 * Add to an existing priority list if one is available for the
  	 * configured priority level for this network.
  	 */
  	for (prio = 0; prio < config->num_prio; prio++) {
  		prev = config->pssid[prio];
  		if (prev->priority == ssid->priority) {
  			while (prev->pnext)
  				prev = prev->pnext;
  			prev->pnext = ssid;
  			return 0;
  		}
  	}
  
  	/* First network for this priority - add a new priority list */
  	nlist = os_realloc_array(config->pssid, config->num_prio + 1,
  				 sizeof(struct wpa_ssid *));
  	if (nlist == NULL)
  		return -1;
  
  	for (prio = 0; prio < config->num_prio; prio++) {
  		if (nlist[prio]->priority < ssid->priority) {
  			os_memmove(&nlist[prio + 1], &nlist[prio],
  				   (config->num_prio - prio) *
  				   sizeof(struct wpa_ssid *));
  			break;
  		}
  	}
  
  	nlist[prio] = ssid;
  	config->num_prio++;
  	config->pssid = nlist;
  
  	return 0;
  }
  
  
  /**
   * wpa_config_update_prio_list - Update network priority list
   * @config: Configuration data from wpa_config_read()
   * Returns: 0 on success, -1 on failure
   *
   * This function is called to update the priority list of networks in the
   * configuration when a network is being added or removed. This is also called
   * if a priority for a network is changed.
   */
  int wpa_config_update_prio_list(struct wpa_config *config)
  {
  	struct wpa_ssid *ssid;
  	int ret = 0;
  
  	os_free(config->pssid);
  	config->pssid = NULL;
  	config->num_prio = 0;
  
  	ssid = config->ssid;
  	while (ssid) {
  		ssid->pnext = NULL;
  		if (wpa_config_add_prio_network(config, ssid) < 0)
  			ret = -1;
  		ssid = ssid->next;
  	}
  
  	return ret;
  }
  
  
  #ifdef IEEE8021X_EAPOL
  static void eap_peer_config_free(struct eap_peer_config *eap)
  {
  	os_free(eap->eap_methods);
  	bin_clear_free(eap->identity, eap->identity_len);
  	os_free(eap->anonymous_identity);
  	bin_clear_free(eap->password, eap->password_len);
  	os_free(eap->ca_cert);
  	os_free(eap->ca_path);
  	os_free(eap->client_cert);
  	os_free(eap->private_key);
  	str_clear_free(eap->private_key_passwd);
  	os_free(eap->dh_file);
  	os_free(eap->subject_match);
  	os_free(eap->altsubject_match);
  	os_free(eap->domain_suffix_match);
  	os_free(eap->domain_match);
  	os_free(eap->ca_cert2);
  	os_free(eap->ca_path2);
  	os_free(eap->client_cert2);
  	os_free(eap->private_key2);
  	str_clear_free(eap->private_key2_passwd);
  	os_free(eap->dh_file2);
  	os_free(eap->subject_match2);
  	os_free(eap->altsubject_match2);
  	os_free(eap->domain_suffix_match2);
  	os_free(eap->domain_match2);
  	os_free(eap->phase1);
  	os_free(eap->phase2);
  	os_free(eap->pcsc);
  	str_clear_free(eap->pin);
  	os_free(eap->engine_id);
  	os_free(eap->key_id);
  	os_free(eap->cert_id);
  	os_free(eap->ca_cert_id);
  	os_free(eap->key2_id);
  	os_free(eap->cert2_id);
  	os_free(eap->ca_cert2_id);
  	str_clear_free(eap->pin2);
  	os_free(eap->engine2_id);
  	os_free(eap->otp);
  	os_free(eap->pending_req_otp);
  	os_free(eap->pac_file);
  	bin_clear_free(eap->new_password, eap->new_password_len);
  	str_clear_free(eap->external_sim_resp);
  	os_free(eap->openssl_ciphers);
  }
  #endif /* IEEE8021X_EAPOL */
  
  
  /**
   * wpa_config_free_ssid - Free network/ssid configuration data
   * @ssid: Configuration data for the network
   *
   * This function frees all resources allocated for the network configuration
   * data.
   */
  void wpa_config_free_ssid(struct wpa_ssid *ssid)
  {
  	struct psk_list_entry *psk;
  
  	os_free(ssid->ssid);
  	str_clear_free(ssid->passphrase);
  	os_free(ssid->ext_psk);
  #ifdef IEEE8021X_EAPOL
  	eap_peer_config_free(&ssid->eap);
  #endif /* IEEE8021X_EAPOL */
  	os_free(ssid->id_str);
  	os_free(ssid->scan_freq);
  	os_free(ssid->freq_list);
  	os_free(ssid->bgscan);
  	os_free(ssid->p2p_client_list);
  	os_free(ssid->bssid_blacklist);
  	os_free(ssid->bssid_whitelist);
  #ifdef CONFIG_HT_OVERRIDES
  	os_free(ssid->ht_mcs);
  #endif /* CONFIG_HT_OVERRIDES */
  #ifdef CONFIG_MESH
  	os_free(ssid->mesh_basic_rates);
  #endif /* CONFIG_MESH */
  	while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
  				    list))) {
  		dl_list_del(&psk->list);
  		bin_clear_free(psk, sizeof(*psk));
  	}
  	bin_clear_free(ssid, sizeof(*ssid));
  }
  
  
  void wpa_config_free_cred(struct wpa_cred *cred)
  {
  	size_t i;
  
  	os_free(cred->realm);
  	str_clear_free(cred->username);
  	str_clear_free(cred->password);
  	os_free(cred->ca_cert);
  	os_free(cred->client_cert);
  	os_free(cred->private_key);
  	str_clear_free(cred->private_key_passwd);
  	os_free(cred->imsi);
  	str_clear_free(cred->milenage);
  	for (i = 0; i < cred->num_domain; i++)
  		os_free(cred->domain[i]);
  	os_free(cred->domain);
  	os_free(cred->domain_suffix_match);
  	os_free(cred->eap_method);
  	os_free(cred->phase1);
  	os_free(cred->phase2);
  	os_free(cred->excluded_ssid);
  	os_free(cred->roaming_partner);
  	os_free(cred->provisioning_sp);
  	for (i = 0; i < cred->num_req_conn_capab; i++)
  		os_free(cred->req_conn_capab_port[i]);
  	os_free(cred->req_conn_capab_port);
  	os_free(cred->req_conn_capab_proto);
  	os_free(cred);
  }
  
  
  void wpa_config_flush_blobs(struct wpa_config *config)
  {
  #ifndef CONFIG_NO_CONFIG_BLOBS
  	struct wpa_config_blob *blob, *prev;
  
  	blob = config->blobs;
  	config->blobs = NULL;
  	while (blob) {
  		prev = blob;
  		blob = blob->next;
  		wpa_config_free_blob(prev);
  	}
  #endif /* CONFIG_NO_CONFIG_BLOBS */
  }
  
  
  /**
   * wpa_config_free - Free configuration data
   * @config: Configuration data from wpa_config_read()
   *
   * This function frees all resources allocated for the configuration data by
   * wpa_config_read().
   */
  void wpa_config_free(struct wpa_config *config)
  {
  	struct wpa_ssid *ssid, *prev = NULL;
  	struct wpa_cred *cred, *cprev;
  	int i;
  
  	ssid = config->ssid;
  	while (ssid) {
  		prev = ssid;
  		ssid = ssid->next;
  		wpa_config_free_ssid(prev);
  	}
  
  	cred = config->cred;
  	while (cred) {
  		cprev = cred;
  		cred = cred->next;
  		wpa_config_free_cred(cprev);
  	}
  
  	wpa_config_flush_blobs(config);
  
  	wpabuf_free(config->wps_vendor_ext_m1);
  	for (i = 0; i < MAX_WPS_VENDOR_EXT; i++)
  		wpabuf_free(config->wps_vendor_ext[i]);
  	os_free(config->ctrl_interface);
  	os_free(config->ctrl_interface_group);
  	os_free(config->opensc_engine_path);
  	os_free(config->pkcs11_engine_path);
  	os_free(config->pkcs11_module_path);
  	os_free(config->openssl_ciphers);
  	os_free(config->pcsc_reader);
  	str_clear_free(config->pcsc_pin);
  	os_free(config->driver_param);
  	os_free(config->device_name);
  	os_free(config->manufacturer);
  	os_free(config->model_name);
  	os_free(config->model_number);
  	os_free(config->serial_number);
  	os_free(config->config_methods);
  	os_free(config->p2p_ssid_postfix);
  	os_free(config->pssid);
  	os_free(config->p2p_pref_chan);
  	os_free(config->p2p_no_go_freq.range);
  	os_free(config->autoscan);
  	os_free(config->freq_list);
  	wpabuf_free(config->wps_nfc_dh_pubkey);
  	wpabuf_free(config->wps_nfc_dh_privkey);
  	wpabuf_free(config->wps_nfc_dev_pw);
  	os_free(config->ext_password_backend);
  	os_free(config->sae_groups);
  	wpabuf_free(config->ap_vendor_elements);
  	os_free(config->osu_dir);
  	os_free(config->bgscan);
  	os_free(config->wowlan_triggers);
  	os_free(config->fst_group_id);
  	os_free(config);
  }
  
  
  /**
   * wpa_config_foreach_network - Iterate over each configured network
   * @config: Configuration data from wpa_config_read()
   * @func: Callback function to process each network
   * @arg: Opaque argument to pass to callback function
   *
   * Iterate over the set of configured networks calling the specified
   * function for each item. We guard against callbacks removing the
   * supplied network.
   */
  void wpa_config_foreach_network(struct wpa_config *config,
  				void (*func)(void *, struct wpa_ssid *),
  				void *arg)
  {
  	struct wpa_ssid *ssid, *next;
  
  	ssid = config->ssid;
  	while (ssid) {
  		next = ssid->next;
  		func(arg, ssid);
  		ssid = next;
  	}
  }
  
  
  /**
   * wpa_config_get_network - Get configured network based on id
   * @config: Configuration data from wpa_config_read()
   * @id: Unique network id to search for
   * Returns: Network configuration or %NULL if not found
   */
  struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
  {
  	struct wpa_ssid *ssid;
  
  	ssid = config->ssid;
  	while (ssid) {
  		if (id == ssid->id)
  			break;
  		ssid = ssid->next;
  	}
  
  	return ssid;
  }
  
  
  /**
   * wpa_config_add_network - Add a new network with empty configuration
   * @config: Configuration data from wpa_config_read()
   * Returns: The new network configuration or %NULL if operation failed
   */
  struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
  {
  	int id;
  	struct wpa_ssid *ssid, *last = NULL;
  
  	id = -1;
  	ssid = config->ssid;
  	while (ssid) {
  		if (ssid->id > id)
  			id = ssid->id;
  		last = ssid;
  		ssid = ssid->next;
  	}
  	id++;
  
  	ssid = os_zalloc(sizeof(*ssid));
  	if (ssid == NULL)
  		return NULL;
  	ssid->id = id;
  	dl_list_init(&ssid->psk_list);
  	if (last)
  		last->next = ssid;
  	else
  		config->ssid = ssid;
  
  	wpa_config_update_prio_list(config);
  
  	return ssid;
  }
  
  
  /**
   * wpa_config_remove_network - Remove a configured network based on id
   * @config: Configuration data from wpa_config_read()
   * @id: Unique network id to search for
   * Returns: 0 on success, or -1 if the network was not found
   */
  int wpa_config_remove_network(struct wpa_config *config, int id)
  {
  	struct wpa_ssid *ssid, *prev = NULL;
  
  	ssid = config->ssid;
  	while (ssid) {
  		if (id == ssid->id)
  			break;
  		prev = ssid;
  		ssid = ssid->next;
  	}
  
  	if (ssid == NULL)
  		return -1;
  
  	if (prev)
  		prev->next = ssid->next;
  	else
  		config->ssid = ssid->next;
  
  	wpa_config_update_prio_list(config);
  	wpa_config_free_ssid(ssid);
  	return 0;
  }
  
  
  /**
   * wpa_config_set_network_defaults - Set network default values
   * @ssid: Pointer to network configuration data
   */
  void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
  {
  	ssid->proto = DEFAULT_PROTO;
  	ssid->pairwise_cipher = DEFAULT_PAIRWISE;
  	ssid->group_cipher = DEFAULT_GROUP;
  	ssid->key_mgmt = DEFAULT_KEY_MGMT;
  	ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
  #ifdef IEEE8021X_EAPOL
  	ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
  	ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
  	ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
  	ssid->eap.sim_num = DEFAULT_USER_SELECTED_SIM;
  #endif /* IEEE8021X_EAPOL */
  #ifdef CONFIG_MESH
  	ssid->dot11MeshMaxRetries = DEFAULT_MESH_MAX_RETRIES;
  	ssid->dot11MeshRetryTimeout = DEFAULT_MESH_RETRY_TIMEOUT;
  	ssid->dot11MeshConfirmTimeout = DEFAULT_MESH_CONFIRM_TIMEOUT;
  	ssid->dot11MeshHoldingTimeout = DEFAULT_MESH_HOLDING_TIMEOUT;
  #endif /* CONFIG_MESH */
  #ifdef CONFIG_HT_OVERRIDES
  	ssid->disable_ht = DEFAULT_DISABLE_HT;
  	ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
  	ssid->disable_sgi = DEFAULT_DISABLE_SGI;
  	ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
  	ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
  	ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
  	ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
  #endif /* CONFIG_HT_OVERRIDES */
  #ifdef CONFIG_VHT_OVERRIDES
  	ssid->vht_rx_mcs_nss_1 = -1;
  	ssid->vht_rx_mcs_nss_2 = -1;
  	ssid->vht_rx_mcs_nss_3 = -1;
  	ssid->vht_rx_mcs_nss_4 = -1;
  	ssid->vht_rx_mcs_nss_5 = -1;
  	ssid->vht_rx_mcs_nss_6 = -1;
  	ssid->vht_rx_mcs_nss_7 = -1;
  	ssid->vht_rx_mcs_nss_8 = -1;
  	ssid->vht_tx_mcs_nss_1 = -1;
  	ssid->vht_tx_mcs_nss_2 = -1;
  	ssid->vht_tx_mcs_nss_3 = -1;
  	ssid->vht_tx_mcs_nss_4 = -1;
  	ssid->vht_tx_mcs_nss_5 = -1;
  	ssid->vht_tx_mcs_nss_6 = -1;
  	ssid->vht_tx_mcs_nss_7 = -1;
  	ssid->vht_tx_mcs_nss_8 = -1;
  #endif /* CONFIG_VHT_OVERRIDES */
  	ssid->proactive_key_caching = -1;
  #ifdef CONFIG_IEEE80211W
  	ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
  #endif /* CONFIG_IEEE80211W */
  	ssid->mac_addr = -1;
  }
  
  
  /**
   * wpa_config_set - Set a variable in network configuration
   * @ssid: Pointer to network configuration data
   * @var: Variable name, e.g., "ssid"
   * @value: Variable value
   * @line: Line number in configuration file or 0 if not used
   * Returns: 0 on success, -1 on failure
   *
   * This function can be used to set network configuration variables based on
   * both the configuration file and management interface input. The value
   * parameter must be in the same format as the text-based configuration file is
   * using. For example, strings are using double quotation marks.
   */
  int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
  		   int line)
  {
  	size_t i;
  	int ret = 0;
  
  	if (ssid == NULL || var == NULL || value == NULL)
  		return -1;
  
  	for (i = 0; i < NUM_SSID_FIELDS; i++) {
  		const struct parse_data *field = &ssid_fields[i];
  		if (os_strcmp(var, field->name) != 0)
  			continue;
  
  		if (field->parser(field, ssid, line, value)) {
  			if (line) {
  				wpa_printf(MSG_ERROR, "Line %d: failed to "
  					   "parse %s '%s'.", line, var, value);
  			}
  			ret = -1;
  		}
  		break;
  	}
  	if (i == NUM_SSID_FIELDS) {
  		if (line) {
  			wpa_printf(MSG_ERROR, "Line %d: unknown network field "
  				   "'%s'.", line, var);
  		}
  		ret = -1;
  	}
  
  	return ret;
  }
  
  
  int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
  			  const char *value)
  {
  	size_t len;
  	char *buf;
  	int ret;
  
  	len = os_strlen(value);
  	buf = os_malloc(len + 3);
  	if (buf == NULL)
  		return -1;
  	buf[0] = '"';
  	os_memcpy(buf + 1, value, len);
  	buf[len + 1] = '"';
  	buf[len + 2] = '\0';
  	ret = wpa_config_set(ssid, var, buf, 0);
  	os_free(buf);
  	return ret;
  }
  
  
  /**
   * wpa_config_get_all - Get all options from network configuration
   * @ssid: Pointer to network configuration data
   * @get_keys: Determines if keys/passwords will be included in returned list
   *	(if they may be exported)
   * Returns: %NULL terminated list of all set keys and their values in the form
   * of [key1, val1, key2, val2, ... , NULL]
   *
   * This function can be used to get list of all configured network properties.
   * The caller is responsible for freeing the returned list and all its
   * elements.
   */
  char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
  {
  #ifdef NO_CONFIG_WRITE
  	return NULL;
  #else /* NO_CONFIG_WRITE */
  	const struct parse_data *field;
  	char *key, *value;
  	size_t i;
  	char **props;
  	int fields_num;
  
  	get_keys = get_keys && ssid->export_keys;
  
  	props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
  	if (!props)
  		return NULL;
  
  	fields_num = 0;
  	for (i = 0; i < NUM_SSID_FIELDS; i++) {
  		field = &ssid_fields[i];
  		if (field->key_data && !get_keys)
  			continue;
  		value = field->writer(field, ssid);
  		if (value == NULL)
  			continue;
  		if (os_strlen(value) == 0) {
  			os_free(value);
  			continue;
  		}
  
  		key = os_strdup(field->name);
  		if (key == NULL) {
  			os_free(value);
  			goto err;
  		}
  
  		props[fields_num * 2] = key;
  		props[fields_num * 2 + 1] = value;
  
  		fields_num++;
  	}
  
  	return props;
  
  err:
  	value = *props;
  	while (value)
  		os_free(value++);
  	os_free(props);
  	return NULL;
  #endif /* NO_CONFIG_WRITE */
  }
  
  
  #ifndef NO_CONFIG_WRITE
  /**
   * wpa_config_get - Get a variable in network configuration
   * @ssid: Pointer to network configuration data
   * @var: Variable name, e.g., "ssid"
   * Returns: Value of the variable or %NULL on failure
   *
   * This function can be used to get network configuration variables. The
   * returned value is a copy of the configuration variable in text format, i.e,.
   * the same format that the text-based configuration file and wpa_config_set()
   * are using for the value. The caller is responsible for freeing the returned
   * value.
   */
  char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
  {
  	size_t i;
  
  	if (ssid == NULL || var == NULL)
  		return NULL;
  
  	for (i = 0; i < NUM_SSID_FIELDS; i++) {
  		const struct parse_data *field = &ssid_fields[i];
  		if (os_strcmp(var, field->name) == 0)
  			return field->writer(field, ssid);
  	}
  
  	return NULL;
  }
  
  
  /**
   * wpa_config_get_no_key - Get a variable in network configuration (no keys)
   * @ssid: Pointer to network configuration data
   * @var: Variable name, e.g., "ssid"
   * Returns: Value of the variable or %NULL on failure
   *
   * This function can be used to get network configuration variable like
   * wpa_config_get(). The only difference is that this functions does not expose
   * key/password material from the configuration. In case a key/password field
   * is requested, the returned value is an empty string or %NULL if the variable
   * is not set or "*" if the variable is set (regardless of its value). The
   * returned value is a copy of the configuration variable in text format, i.e,.
   * the same format that the text-based configuration file and wpa_config_set()
   * are using for the value. The caller is responsible for freeing the returned
   * value.
   */
  char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
  {
  	size_t i;
  
  	if (ssid == NULL || var == NULL)
  		return NULL;
  
  	for (i = 0; i < NUM_SSID_FIELDS; i++) {
  		const struct parse_data *field = &ssid_fields[i];
  		if (os_strcmp(var, field->name) == 0) {
  			char *res = field->writer(field, ssid);
  			if (field->key_data) {
  				if (res && res[0]) {
  					wpa_printf(MSG_DEBUG, "Do not allow "
  						   "key_data field to be "
  						   "exposed");
  					str_clear_free(res);
  					return os_strdup("*");
  				}
  
  				os_free(res);
  				return NULL;
  			}
  			return res;
  		}
  	}
  
  	return NULL;
  }
  #endif /* NO_CONFIG_WRITE */
  
  
  /**
   * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
   * @ssid: Pointer to network configuration data
   *
   * This function must be called to update WPA PSK when either SSID or the
   * passphrase has changed for the network configuration.
   */
  void wpa_config_update_psk(struct wpa_ssid *ssid)
  {
  #ifndef CONFIG_NO_PBKDF2
  	pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
  		    ssid->psk, PMK_LEN);
  	wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
  			ssid->psk, PMK_LEN);
  	ssid->psk_set = 1;
  #endif /* CONFIG_NO_PBKDF2 */
  }
  
  
  static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
  					      const char *value)
  {
  	u8 *proto;
  	int **port;
  	int *ports, *nports;
  	const char *pos;
  	unsigned int num_ports;
  
  	proto = os_realloc_array(cred->req_conn_capab_proto,
  				 cred->num_req_conn_capab + 1, sizeof(u8));
  	if (proto == NULL)
  		return -1;
  	cred->req_conn_capab_proto = proto;
  
  	port = os_realloc_array(cred->req_conn_capab_port,
  				cred->num_req_conn_capab + 1, sizeof(int *));
  	if (port == NULL)
  		return -1;
  	cred->req_conn_capab_port = port;
  
  	proto[cred->num_req_conn_capab] = atoi(value);
  
  	pos = os_strchr(value, ':');
  	if (pos == NULL) {
  		port[cred->num_req_conn_capab] = NULL;
  		cred->num_req_conn_capab++;
  		return 0;
  	}
  	pos++;
  
  	ports = NULL;
  	num_ports = 0;
  
  	while (*pos) {
  		nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
  		if (nports == NULL) {
  			os_free(ports);
  			return -1;
  		}
  		ports = nports;
  		ports[num_ports++] = atoi(pos);
  
  		pos = os_strchr(pos, ',');
  		if (pos == NULL)
  			break;
  		pos++;
  	}
  
  	nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
  	if (nports == NULL) {
  		os_free(ports);
  		return -1;
  	}
  	ports = nports;
  	ports[num_ports] = -1;
  
  	port[cred->num_req_conn_capab] = ports;
  	cred->num_req_conn_capab++;
  	return 0;
  }
  
  
  int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
  			const char *value, int line)
  {
  	char *val;
  	size_t len;
  
  	if (os_strcmp(var, "temporary") == 0) {
  		cred->temporary = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "priority") == 0) {
  		cred->priority = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "sp_priority") == 0) {
  		int prio = atoi(value);
  		if (prio < 0 || prio > 255)
  			return -1;
  		cred->sp_priority = prio;
  		return 0;
  	}
  
  	if (os_strcmp(var, "pcsc") == 0) {
  		cred->pcsc = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "eap") == 0) {
  		struct eap_method_type method;
  		method.method = eap_peer_get_type(value, &method.vendor);
  		if (method.vendor == EAP_VENDOR_IETF &&
  		    method.method == EAP_TYPE_NONE) {
  			wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
  				   "for a credential", line, value);
  			return -1;
  		}
  		os_free(cred->eap_method);
  		cred->eap_method = os_malloc(sizeof(*cred->eap_method));
  		if (cred->eap_method == NULL)
  			return -1;
  		os_memcpy(cred->eap_method, &method, sizeof(method));
  		return 0;
  	}
  
  	if (os_strcmp(var, "password") == 0 &&
  	    os_strncmp(value, "ext:", 4) == 0) {
  		str_clear_free(cred->password);
  		cred->password = os_strdup(value);
  		cred->ext_password = 1;
  		return 0;
  	}
  
  	if (os_strcmp(var, "update_identifier") == 0) {
  		cred->update_identifier = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
  		cred->min_dl_bandwidth_home = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
  		cred->min_ul_bandwidth_home = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
  		cred->min_dl_bandwidth_roaming = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
  		cred->min_ul_bandwidth_roaming = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "max_bss_load") == 0) {
  		cred->max_bss_load = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "req_conn_capab") == 0)
  		return wpa_config_set_cred_req_conn_capab(cred, value);
  
  	if (os_strcmp(var, "ocsp") == 0) {
  		cred->ocsp = atoi(value);
  		return 0;
  	}
  
  	if (os_strcmp(var, "sim_num") == 0) {
  		cred->sim_num = atoi(value);
  		return 0;
  	}
  
  	val = wpa_config_parse_string(value, &len);
  	if (val == NULL) {
  		wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
  			   "value '%s'.", line, var, value);
  		return -1;
  	}
  
  	if (os_strcmp(var, "realm") == 0) {
  		os_free(cred->realm);
  		cred->realm = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "username") == 0) {
  		str_clear_free(cred->username);
  		cred->username = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "password") == 0) {
  		str_clear_free(cred->password);
  		cred->password = val;
  		cred->ext_password = 0;
  		return 0;
  	}
  
  	if (os_strcmp(var, "ca_cert") == 0) {
  		os_free(cred->ca_cert);
  		cred->ca_cert = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "client_cert") == 0) {
  		os_free(cred->client_cert);
  		cred->client_cert = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "private_key") == 0) {
  		os_free(cred->private_key);
  		cred->private_key = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "private_key_passwd") == 0) {
  		str_clear_free(cred->private_key_passwd);
  		cred->private_key_passwd = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "imsi") == 0) {
  		os_free(cred->imsi);
  		cred->imsi = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "milenage") == 0) {
  		str_clear_free(cred->milenage);
  		cred->milenage = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "domain_suffix_match") == 0) {
  		os_free(cred->domain_suffix_match);
  		cred->domain_suffix_match = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "domain") == 0) {
  		char **new_domain;
  		new_domain = os_realloc_array(cred->domain,
  					      cred->num_domain + 1,
  					      sizeof(char *));
  		if (new_domain == NULL) {
  			os_free(val);
  			return -1;
  		}
  		new_domain[cred->num_domain++] = val;
  		cred->domain = new_domain;
  		return 0;
  	}
  
  	if (os_strcmp(var, "phase1") == 0) {
  		os_free(cred->phase1);
  		cred->phase1 = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "phase2") == 0) {
  		os_free(cred->phase2);
  		cred->phase2 = val;
  		return 0;
  	}
  
  	if (os_strcmp(var, "roaming_consortium") == 0) {
  		if (len < 3 || len > sizeof(cred->roaming_consortium)) {
  			wpa_printf(MSG_ERROR, "Line %d: invalid "
  				   "roaming_consortium length %d (3..15 "
  				   "expected)", line, (int) len);
  			os_free(val);
  			return -1;
  		}
  		os_memcpy(cred->roaming_consortium, val, len);
  		cred->roaming_consortium_len = len;
  		os_free(val);
  		return 0;
  	}
  
  	if (os_strcmp(var, "required_roaming_consortium") == 0) {
  		if (len < 3 || len > sizeof(cred->required_roaming_consortium))
  		{
  			wpa_printf(MSG_ERROR, "Line %d: invalid "
  				   "required_roaming_consortium length %d "
  				   "(3..15 expected)", line, (int) len);
  			os_free(val);
  			return -1;
  		}
  		os_memcpy(cred->required_roaming_consortium, val, len);
  		cred->required_roaming_consortium_len = len;
  		os_free(val);
  		return 0;
  	}
  
  	if (os_strcmp(var, "excluded_ssid") == 0) {
  		struct excluded_ssid *e;
  
  		if (len > SSID_MAX_LEN) {
  			wpa_printf(MSG_ERROR, "Line %d: invalid "
  				   "excluded_ssid length %d", line, (int) len);
  			os_free(val);
  			return -1;
  		}
  
  		e = os_realloc_array(cred->excluded_ssid,
  				     cred->num_excluded_ssid + 1,
  				     sizeof(struct excluded_ssid));
  		if (e == NULL) {
  			os_free(val);
  			return -1;
  		}
  		cred->excluded_ssid = e;
  
  		e = &cred->excluded_ssid[cred->num_excluded_ssid++];
  		os_memcpy(e->ssid, val, len);
  		e->ssid_len = len;
  
  		os_free(val);
  
  		return 0;
  	}
  
  	if (os_strcmp(var, "roaming_partner") == 0) {
  		struct roaming_partner *p;
  		char *pos;
  
  		p = os_realloc_array(cred->roaming_partner,
  				     cred->num_roaming_partner + 1,
  				     sizeof(struct roaming_partner));
  		if (p == NULL) {
  			os_free(val);
  			return -1;
  		}
  		cred->roaming_partner = p;
  
  		p = &cred->roaming_partner[cred->num_roaming_partner];
  
  		pos = os_strchr(val, ',');
  		if (pos == NULL) {
  			os_free(val);
  			return -1;
  		}
  		*pos++ = '\0';
  		if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
  			os_free(val);
  			return -1;
  		}
  		os_memcpy(p->fqdn, val, pos - val);
  
  		p->exact_match = atoi(pos);
  
  		pos = os_strchr(pos, ',');
  		if (pos == NULL) {
  			os_free(val);
  			return -1;
  		}
  		*pos++ = '\0';
  
  		p->priority = atoi(pos);
  
  		pos = os_strchr(pos, ',');
  		if (pos == NULL) {
  			os_free(val);
  			return -1;
  		}
  		*pos++ = '\0';
  
  		if (os_strlen(pos) >= sizeof(p->country)) {
  			os_free(val);
  			return -1;
  		}
  		os_memcpy(p->country, pos, os_strlen(pos) + 1);
  
  		cred->num_roaming_partner++;
  		os_free(val);
  
  		return 0;
  	}
  
  	if (os_strcmp(var, "provisioning_sp") == 0) {
  		os_free(cred->provisioning_sp);
  		cred->provisioning_sp = val;
  		return 0;
  	}
  
  	if (line) {
  		wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
  			   line, var);
  	}
  
  	os_free(val);
  
  	return -1;
  }
  
  
  static char * alloc_int_str(int val)
  {
  	const unsigned int bufsize = 20;
  	char *buf;
  	int res;
  
  	buf = os_malloc(bufsize);
  	if (buf == NULL)
  		return NULL;
  	res = os_snprintf(buf, bufsize, "%d", val);
  	if (os_snprintf_error(bufsize, res)) {
  		os_free(buf);
  		buf = NULL;
  	}
  	return buf;
  }
  
  
  static char * alloc_strdup(const char *str)
  {
  	if (str == NULL)
  		return NULL;
  	return os_strdup(str);
  }
  
  
  char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var)
  {
  	if (os_strcmp(var, "temporary") == 0)
  		return alloc_int_str(cred->temporary);
  
  	if (os_strcmp(var, "priority") == 0)
  		return alloc_int_str(cred->priority);
  
  	if (os_strcmp(var, "sp_priority") == 0)
  		return alloc_int_str(cred->sp_priority);
  
  	if (os_strcmp(var, "pcsc") == 0)
  		return alloc_int_str(cred->pcsc);
  
  	if (os_strcmp(var, "eap") == 0) {
  		if (!cred->eap_method)
  			return NULL;
  		return alloc_strdup(eap_get_name(cred->eap_method[0].vendor,
  						 cred->eap_method[0].method));
  	}
  
  	if (os_strcmp(var, "update_identifier") == 0)
  		return alloc_int_str(cred->update_identifier);
  
  	if (os_strcmp(var, "min_dl_bandwidth_home") == 0)
  		return alloc_int_str(cred->min_dl_bandwidth_home);
  
  	if (os_strcmp(var, "min_ul_bandwidth_home") == 0)
  		return alloc_int_str(cred->min_ul_bandwidth_home);
  
  	if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0)
  		return alloc_int_str(cred->min_dl_bandwidth_roaming);
  
  	if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0)
  		return alloc_int_str(cred->min_ul_bandwidth_roaming);
  
  	if (os_strcmp(var, "max_bss_load") == 0)
  		return alloc_int_str(cred->max_bss_load);
  
  	if (os_strcmp(var, "req_conn_capab") == 0) {
  		unsigned int i;
  		char *buf, *end, *pos;
  		int ret;
  
  		if (!cred->num_req_conn_capab)
  			return NULL;
  
  		buf = os_malloc(4000);
  		if (buf == NULL)
  			return NULL;
  		pos = buf;
  		end = pos + 4000;
  		for (i = 0; i < cred->num_req_conn_capab; i++) {
  			int *ports;
  
  			ret = os_snprintf(pos, end - pos, "%s%u",
  					  i > 0 ? "\n" : "",
  					  cred->req_conn_capab_proto[i]);
  			if (os_snprintf_error(end - pos, ret))
  				return buf;
  			pos += ret;
  
  			ports = cred->req_conn_capab_port[i];
  			if (ports) {
  				int j;
  				for (j = 0; ports[j] != -1; j++) {
  					ret = os_snprintf(pos, end - pos,
  							  "%s%d",
  							  j > 0 ? "," : ":",
  							  ports[j]);
  					if (os_snprintf_error(end - pos, ret))
  						return buf;
  					pos += ret;
  				}
  			}
  		}
  
  		return buf;
  	}
  
  	if (os_strcmp(var, "ocsp") == 0)
  		return alloc_int_str(cred->ocsp);
  
  	if (os_strcmp(var, "realm") == 0)
  		return alloc_strdup(cred->realm);
  
  	if (os_strcmp(var, "username") == 0)
  		return alloc_strdup(cred->username);
  
  	if (os_strcmp(var, "password") == 0) {
  		if (!cred->password)
  			return NULL;
  		return alloc_strdup("*");
  	}
  
  	if (os_strcmp(var, "ca_cert") == 0)
  		return alloc_strdup(cred->ca_cert);
  
  	if (os_strcmp(var, "client_cert") == 0)
  		return alloc_strdup(cred->client_cert);
  
  	if (os_strcmp(var, "private_key") == 0)
  		return alloc_strdup(cred->private_key);
  
  	if (os_strcmp(var, "private_key_passwd") == 0) {
  		if (!cred->private_key_passwd)
  			return NULL;
  		return alloc_strdup("*");
  	}
  
  	if (os_strcmp(var, "imsi") == 0)
  		return alloc_strdup(cred->imsi);
  
  	if (os_strcmp(var, "milenage") == 0) {
  		if (!(cred->milenage))
  			return NULL;
  		return alloc_strdup("*");
  	}
  
  	if (os_strcmp(var, "domain_suffix_match") == 0)
  		return alloc_strdup(cred->domain_suffix_match);
  
  	if (os_strcmp(var, "domain") == 0) {
  		unsigned int i;
  		char *buf, *end, *pos;
  		int ret;
  
  		if (!cred->num_domain)
  			return NULL;
  
  		buf = os_malloc(4000);
  		if (buf == NULL)
  			return NULL;
  		pos = buf;
  		end = pos + 4000;
  
  		for (i = 0; i < cred->num_domain; i++) {
  			ret = os_snprintf(pos, end - pos, "%s%s",
  					  i > 0 ? "\n" : "", cred->domain[i]);
  			if (os_snprintf_error(end - pos, ret))
  				return buf;
  			pos += ret;
  		}
  
  		return buf;
  	}
  
  	if (os_strcmp(var, "phase1") == 0)
  		return alloc_strdup(cred->phase1);
  
  	if (os_strcmp(var, "phase2") == 0)
  		return alloc_strdup(cred->phase2);
  
  	if (os_strcmp(var, "roaming_consortium") == 0) {
  		size_t buflen;
  		char *buf;
  
  		if (!cred->roaming_consortium_len)
  			return NULL;
  		buflen = cred->roaming_consortium_len * 2 + 1;
  		buf = os_malloc(buflen);
  		if (buf == NULL)
  			return NULL;
  		wpa_snprintf_hex(buf, buflen, cred->roaming_consortium,
  				 cred->roaming_consortium_len);
  		return buf;
  	}
  
  	if (os_strcmp(var, "required_roaming_consortium") == 0) {
  		size_t buflen;
  		char *buf;
  
  		if (!cred->required_roaming_consortium_len)
  			return NULL;
  		buflen = cred->required_roaming_consortium_len * 2 + 1;
  		buf = os_malloc(buflen);
  		if (buf == NULL)
  			return NULL;
  		wpa_snprintf_hex(buf, buflen, cred->required_roaming_consortium,
  				 cred->required_roaming_consortium_len);
  		return buf;
  	}
  
  	if (os_strcmp(var, "excluded_ssid") == 0) {
  		unsigned int i;
  		char *buf, *end, *pos;
  
  		if (!cred->num_excluded_ssid)
  			return NULL;
  
  		buf = os_malloc(4000);
  		if (buf == NULL)
  			return NULL;
  		pos = buf;
  		end = pos + 4000;
  
  		for (i = 0; i < cred->num_excluded_ssid; i++) {
  			struct excluded_ssid *e;
  			int ret;
  
  			e = &cred->excluded_ssid[i];
  			ret = os_snprintf(pos, end - pos, "%s%s",
  					  i > 0 ? "\n" : "",
  					  wpa_ssid_txt(e->ssid, e->ssid_len));
  			if (os_snprintf_error(end - pos, ret))
  				return buf;
  			pos += ret;
  		}
  
  		return buf;
  	}
  
  	if (os_strcmp(var, "roaming_partner") == 0) {
  		unsigned int i;
  		char *buf, *end, *pos;
  
  		if (!cred->num_roaming_partner)
  			return NULL;
  
  		buf = os_malloc(4000);
  		if (buf == NULL)
  			return NULL;
  		pos = buf;
  		end = pos + 4000;
  
  		for (i = 0; i < cred->num_roaming_partner; i++) {
  			struct roaming_partner *p;
  			int ret;
  
  			p = &cred->roaming_partner[i];
  			ret = os_snprintf(pos, end - pos, "%s%s,%d,%u,%s",
  					  i > 0 ? "\n" : "",
  					  p->fqdn, p->exact_match, p->priority,
  					  p->country);
  			if (os_snprintf_error(end - pos, ret))
  				return buf;
  			pos += ret;
  		}
  
  		return buf;
  	}
  
  	if (os_strcmp(var, "provisioning_sp") == 0)
  		return alloc_strdup(cred->provisioning_sp);
  
  	return NULL;
  }
  
  
  struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
  {
  	struct wpa_cred *cred;
  
  	cred = config->cred;
  	while (cred) {
  		if (id == cred->id)
  			break;
  		cred = cred->next;
  	}
  
  	return cred;
  }
  
  
  struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
  {
  	int id;
  	struct wpa_cred *cred, *last = NULL;
  
  	id = -1;
  	cred = config->cred;
  	while (cred) {
  		if (cred->id > id)
  			id = cred->id;
  		last = cred;
  		cred = cred->next;
  	}
  	id++;
  
  	cred = os_zalloc(sizeof(*cred));
  	if (cred == NULL)
  		return NULL;
  	cred->id = id;
  	cred->sim_num = DEFAULT_USER_SELECTED_SIM;
  	if (last)
  		last->next = cred;
  	else
  		config->cred = cred;
  
  	return cred;
  }
  
  
  int wpa_config_remove_cred(struct wpa_config *config, int id)
  {
  	struct wpa_cred *cred, *prev = NULL;
  
  	cred = config->cred;
  	while (cred) {
  		if (id == cred->id)
  			break;
  		prev = cred;
  		cred = cred->next;
  	}
  
  	if (cred == NULL)
  		return -1;
  
  	if (prev)
  		prev->next = cred->next;
  	else
  		config->cred = cred->next;
  
  	wpa_config_free_cred(cred);
  	return 0;
  }
  
  
  #ifndef CONFIG_NO_CONFIG_BLOBS
  /**
   * wpa_config_get_blob - Get a named configuration blob
   * @config: Configuration data from wpa_config_read()
   * @name: Name of the blob
   * Returns: Pointer to blob data or %NULL if not found
   */
  const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
  						   const char *name)
  {
  	struct wpa_config_blob *blob = config->blobs;
  
  	while (blob) {
  		if (os_strcmp(blob->name, name) == 0)
  			return blob;
  		blob = blob->next;
  	}
  	return NULL;
  }
  
  
  /**
   * wpa_config_set_blob - Set or add a named configuration blob
   * @config: Configuration data from wpa_config_read()
   * @blob: New value for the blob
   *
   * Adds a new configuration blob or replaces the current value of an existing
   * blob.
   */
  void wpa_config_set_blob(struct wpa_config *config,
  			 struct wpa_config_blob *blob)
  {
  	wpa_config_remove_blob(config, blob->name);
  	blob->next = config->blobs;
  	config->blobs = blob;
  }
  
  
  /**
   * wpa_config_free_blob - Free blob data
   * @blob: Pointer to blob to be freed
   */
  void wpa_config_free_blob(struct wpa_config_blob *blob)
  {
  	if (blob) {
  		os_free(blob->name);
  		bin_clear_free(blob->data, blob->len);
  		os_free(blob);
  	}
  }
  
  
  /**
   * wpa_config_remove_blob - Remove a named configuration blob
   * @config: Configuration data from wpa_config_read()
   * @name: Name of the blob to remove
   * Returns: 0 if blob was removed or -1 if blob was not found
   */
  int wpa_config_remove_blob(struct wpa_config *config, const char *name)
  {
  	struct wpa_config_blob *pos = config->blobs, *prev = NULL;
  
  	while (pos) {
  		if (os_strcmp(pos->name, name) == 0) {
  			if (prev)
  				prev->next = pos->next;
  			else
  				config->blobs = pos->next;
  			wpa_config_free_blob(pos);
  			return 0;
  		}
  		prev = pos;
  		pos = pos->next;
  	}
  
  	return -1;
  }
  #endif /* CONFIG_NO_CONFIG_BLOBS */
  
  
  /**
   * wpa_config_alloc_empty - Allocate an empty configuration
   * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
   * socket
   * @driver_param: Driver parameters
   * Returns: Pointer to allocated configuration data or %NULL on failure
   */
  struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
  					   const char *driver_param)
  {
  	struct wpa_config *config;
  	const int aCWmin = 4, aCWmax = 10;
  	const struct hostapd_wmm_ac_params ac_bk =
  		{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
  	const struct hostapd_wmm_ac_params ac_be =
  		{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
  	const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
  		{ aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
  	const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
  		{ aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
  
  	config = os_zalloc(sizeof(*config));
  	if (config == NULL)
  		return NULL;
  	config->eapol_version = DEFAULT_EAPOL_VERSION;
  	config->ap_scan = DEFAULT_AP_SCAN;
  	config->user_mpm = DEFAULT_USER_MPM;
  	config->max_peer_links = DEFAULT_MAX_PEER_LINKS;
  	config->mesh_max_inactivity = DEFAULT_MESH_MAX_INACTIVITY;
  	config->fast_reauth = DEFAULT_FAST_REAUTH;
  	config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
  	config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
  	config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
  	config->p2p_optimize_listen_chan = DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN;
  	config->p2p_go_ctwindow = DEFAULT_P2P_GO_CTWINDOW;
  	config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
  	config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
  	config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
  	config->max_num_sta = DEFAULT_MAX_NUM_STA;
  	config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
  	config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
  	config->wmm_ac_params[0] = ac_be;
  	config->wmm_ac_params[1] = ac_bk;
  	config->wmm_ac_params[2] = ac_vi;
  	config->wmm_ac_params[3] = ac_vo;
  	config->p2p_search_delay = DEFAULT_P2P_SEARCH_DELAY;
  	config->rand_addr_lifetime = DEFAULT_RAND_ADDR_LIFETIME;
  	config->key_mgmt_offload = DEFAULT_KEY_MGMT_OFFLOAD;
  	config->cert_in_cb = DEFAULT_CERT_IN_CB;
  
  	if (ctrl_interface)
  		config->ctrl_interface = os_strdup(ctrl_interface);
  	if (driver_param)
  		config->driver_param = os_strdup(driver_param);
  
  	return config;
  }
  
  
  #ifndef CONFIG_NO_STDOUT_DEBUG
  /**
   * wpa_config_debug_dump_networks - Debug dump of configured networks
   * @config: Configuration data from wpa_config_read()
   */
  void wpa_config_debug_dump_networks(struct wpa_config *config)
  {
  	int prio;
  	struct wpa_ssid *ssid;
  
  	for (prio = 0; prio < config->num_prio; prio++) {
  		ssid = config->pssid[prio];
  		wpa_printf(MSG_DEBUG, "Priority group %d",
  			   ssid->priority);
  		while (ssid) {
  			wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
  				   ssid->id,
  				   wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
  			ssid = ssid->pnext;
  		}
  	}
  }
  #endif /* CONFIG_NO_STDOUT_DEBUG */
  
  
  struct global_parse_data {
  	char *name;
  	int (*parser)(const struct global_parse_data *data,
  		      struct wpa_config *config, int line, const char *value);
  	int (*get)(const char *name, struct wpa_config *config, long offset,
  		   char *buf, size_t buflen, int pretty_print);
  	void *param1, *param2, *param3;
  	unsigned int changed_flag;
  };
  
  
  static int wpa_global_config_parse_int(const struct global_parse_data *data,
  				       struct wpa_config *config, int line,
  				       const char *pos)
  {
  	int val, *dst;
  	char *end;
  
  	dst = (int *) (((u8 *) config) + (long) data->param1);
  	val = strtol(pos, &end, 0);
  	if (*end) {
  		wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
  			   line, pos);
  		return -1;
  	}
  	*dst = val;
  
  	wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
  
  	if (data->param2 && *dst < (long) data->param2) {
  		wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
  			   "min_value=%ld)", line, data->name, *dst,
  			   (long) data->param2);
  		*dst = (long) data->param2;
  		return -1;
  	}
  
  	if (data->param3 && *dst > (long) data->param3) {
  		wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
  			   "max_value=%ld)", line, data->name, *dst,
  			   (long) data->param3);
  		*dst = (long) data->param3;
  		return -1;
  	}
  
  	return 0;
  }
  
  
  static int wpa_global_config_parse_str(const struct global_parse_data *data,
  				       struct wpa_config *config, int line,
  				       const char *pos)
  {
  	size_t len;
  	char **dst, *tmp;
  
  	len = os_strlen(pos);
  	if (data->param2 && len < (size_t) data->param2) {
  		wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  			   "min_len=%ld)", line, data->name,
  			   (unsigned long) len, (long) data->param2);
  		return -1;
  	}
  
  	if (data->param3 && len > (size_t) data->param3) {
  		wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  			   "max_len=%ld)", line, data->name,
  			   (unsigned long) len, (long) data->param3);
  		return -1;
  	}
  
  	tmp = os_strdup(pos);
  	if (tmp == NULL)
  		return -1;
  
  	dst = (char **) (((u8 *) config) + (long) data->param1);
  	os_free(*dst);
  	*dst = tmp;
  	wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
  
  	return 0;
  }
  
  
  static int wpa_config_process_bgscan(const struct global_parse_data *data,
  				     struct wpa_config *config, int line,
  				     const char *pos)
  {
  	size_t len;
  	char *tmp;
  	int res;
  
  	tmp = wpa_config_parse_string(pos, &len);
  	if (tmp == NULL) {
  		wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
  			   line, data->name);
  		return -1;
  	}
  
  	res = wpa_global_config_parse_str(data, config, line, tmp);
  	os_free(tmp);
  	return res;
  }
  
  
  static int wpa_global_config_parse_bin(const struct global_parse_data *data,
  				       struct wpa_config *config, int line,
  				       const char *pos)
  {
  	size_t len;
  	struct wpabuf **dst, *tmp;
  
  	len = os_strlen(pos);
  	if (len & 0x01)
  		return -1;
  
  	tmp = wpabuf_alloc(len / 2);
  	if (tmp == NULL)
  		return -1;
  
  	if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
  		wpabuf_free(tmp);
  		return -1;
  	}
  
  	dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
  	wpabuf_free(*dst);
  	*dst = tmp;
  	wpa_printf(MSG_DEBUG, "%s", data->name);
  
  	return 0;
  }
  
  
  static int wpa_config_process_freq_list(const struct global_parse_data *data,
  					struct wpa_config *config, int line,
  					const char *value)
  {
  	int *freqs;
  
  	freqs = wpa_config_parse_int_array(value);
  	if (freqs == NULL)
  		return -1;
  	if (freqs[0] == 0) {
  		os_free(freqs);
  		freqs = NULL;
  	}
  	os_free(config->freq_list);
  	config->freq_list = freqs;
  	return 0;
  }
  
  
  #ifdef CONFIG_P2P
  static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
  					struct wpa_config *config, int line,
  					const char *pos)
  {
  	u32 *dst;
  	struct hostapd_ip_addr addr;
  
  	if (hostapd_parse_ip_addr(pos, &addr) < 0)
  		return -1;
  	if (addr.af != AF_INET)
  		return -1;
  
  	dst = (u32 *) (((u8 *) config) + (long) data->param1);
  	os_memcpy(dst, &addr.u.v4.s_addr, 4);
  	wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
  		   WPA_GET_BE32((u8 *) dst));
  
  	return 0;
  }
  #endif /* CONFIG_P2P */
  
  
  static int wpa_config_process_country(const struct global_parse_data *data,
  				      struct wpa_config *config, int line,
  				      const char *pos)
  {
  	if (!pos[0] || !pos[1]) {
  		wpa_printf(MSG_DEBUG, "Invalid country set");
  		return -1;
  	}
  	config->country[0] = pos[0];
  	config->country[1] = pos[1];
  	wpa_printf(MSG_DEBUG, "country='%c%c'",
  		   config->country[0], config->country[1]);
  	return 0;
  }
  
  
  static int wpa_config_process_load_dynamic_eap(
  	const struct global_parse_data *data, struct wpa_config *config,
  	int line, const char *so)
  {
  	int ret;
  	wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
  	ret = eap_peer_method_load(so);
  	if (ret == -2) {
  		wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
  			   "reloading.");
  	} else if (ret) {
  		wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
  			   "method '%s'.", line, so);
  		return -1;
  	}
  
  	return 0;
  }
  
  
  #ifdef CONFIG_WPS
  
  static int wpa_config_process_uuid(const struct global_parse_data *data,
  				   struct wpa_config *config, int line,
  				   const char *pos)
  {
  	char buf[40];
  	if (uuid_str2bin(pos, config->uuid)) {
  		wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
  		return -1;
  	}
  	uuid_bin2str(config->uuid, buf, sizeof(buf));
  	wpa_printf(MSG_DEBUG, "uuid=%s", buf);
  	return 0;
  }
  
  
  static int wpa_config_process_device_type(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	return wps_dev_type_str2bin(pos, config->device_type);
  }
  
  
  static int wpa_config_process_os_version(const struct global_parse_data *data,
  					 struct wpa_config *config, int line,
  					 const char *pos)
  {
  	if (hexstr2bin(pos, config->os_version, 4)) {
  		wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
  		return -1;
  	}
  	wpa_printf(MSG_DEBUG, "os_version=%08x",
  		   WPA_GET_BE32(config->os_version));
  	return 0;
  }
  
  
  static int wpa_config_process_wps_vendor_ext_m1(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	struct wpabuf *tmp;
  	int len = os_strlen(pos) / 2;
  	u8 *p;
  
  	if (!len) {
  		wpa_printf(MSG_ERROR, "Line %d: "
  			   "invalid wps_vendor_ext_m1", line);
  		return -1;
  	}
  
  	tmp = wpabuf_alloc(len);
  	if (tmp) {
  		p = wpabuf_put(tmp, len);
  
  		if (hexstr2bin(pos, p, len)) {
  			wpa_printf(MSG_ERROR, "Line %d: "
  				   "invalid wps_vendor_ext_m1", line);
  			wpabuf_free(tmp);
  			return -1;
  		}
  
  		wpabuf_free(config->wps_vendor_ext_m1);
  		config->wps_vendor_ext_m1 = tmp;
  	} else {
  		wpa_printf(MSG_ERROR, "Can not allocate "
  			   "memory for wps_vendor_ext_m1");
  		return -1;
  	}
  
  	return 0;
  }
  
  #endif /* CONFIG_WPS */
  
  #ifdef CONFIG_P2P
  static int wpa_config_process_sec_device_type(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	int idx;
  
  	if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
  		wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
  			   "items", line);
  		return -1;
  	}
  
  	idx = config->num_sec_device_types;
  
  	if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
  		return -1;
  
  	config->num_sec_device_types++;
  	return 0;
  }
  
  
  static int wpa_config_process_p2p_pref_chan(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	struct p2p_channel *pref = NULL, *n;
  	unsigned int num = 0;
  	const char *pos2;
  	u8 op_class, chan;
  
  	/* format: class:chan,class:chan,... */
  
  	while (*pos) {
  		op_class = atoi(pos);
  		pos2 = os_strchr(pos, ':');
  		if (pos2 == NULL)
  			goto fail;
  		pos2++;
  		chan = atoi(pos2);
  
  		n = os_realloc_array(pref, num + 1,
  				     sizeof(struct p2p_channel));
  		if (n == NULL)
  			goto fail;
  		pref = n;
  		pref[num].op_class = op_class;
  		pref[num].chan = chan;
  		num++;
  
  		pos = os_strchr(pos2, ',');
  		if (pos == NULL)
  			break;
  		pos++;
  	}
  
  	os_free(config->p2p_pref_chan);
  	config->p2p_pref_chan = pref;
  	config->num_p2p_pref_chan = num;
  	wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
  		    (u8 *) config->p2p_pref_chan,
  		    config->num_p2p_pref_chan * sizeof(struct p2p_channel));
  
  	return 0;
  
  fail:
  	os_free(pref);
  	wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
  	return -1;
  }
  
  
  static int wpa_config_process_p2p_no_go_freq(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	int ret;
  
  	ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
  	if (ret < 0) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
  		return -1;
  	}
  
  	wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
  		   config->p2p_no_go_freq.num);
  
  	return 0;
  }
  
  #endif /* CONFIG_P2P */
  
  
  static int wpa_config_process_hessid(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	if (hwaddr_aton2(pos, config->hessid) < 0) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
  			   line, pos);
  		return -1;
  	}
  
  	return 0;
  }
  
  
  static int wpa_config_process_sae_groups(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	int *groups = wpa_config_parse_int_array(pos);
  	if (groups == NULL) {
  		wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
  			   line, pos);
  		return -1;
  	}
  
  	os_free(config->sae_groups);
  	config->sae_groups = groups;
  
  	return 0;
  }
  
  
  static int wpa_config_process_ap_vendor_elements(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	struct wpabuf *tmp;
  	int len = os_strlen(pos) / 2;
  	u8 *p;
  
  	if (!len) {
  		wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
  			   line);
  		return -1;
  	}
  
  	tmp = wpabuf_alloc(len);
  	if (tmp) {
  		p = wpabuf_put(tmp, len);
  
  		if (hexstr2bin(pos, p, len)) {
  			wpa_printf(MSG_ERROR, "Line %d: invalid "
  				   "ap_vendor_elements", line);
  			wpabuf_free(tmp);
  			return -1;
  		}
  
  		wpabuf_free(config->ap_vendor_elements);
  		config->ap_vendor_elements = tmp;
  	} else {
  		wpa_printf(MSG_ERROR, "Cannot allocate memory for "
  			   "ap_vendor_elements");
  		return -1;
  	}
  
  	return 0;
  }
  
  
  #ifdef CONFIG_CTRL_IFACE
  static int wpa_config_process_no_ctrl_interface(
  	const struct global_parse_data *data,
  	struct wpa_config *config, int line, const char *pos)
  {
  	wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
  	os_free(config->ctrl_interface);
  	config->ctrl_interface = NULL;
  	return 0;
  }
  #endif /* CONFIG_CTRL_IFACE */
  
  
  static int wpa_config_get_int(const char *name, struct wpa_config *config,
  			      long offset, char *buf, size_t buflen,
  			      int pretty_print)
  {
  	int *val = (int *) (((u8 *) config) + (long) offset);
  
  	if (pretty_print)
  		return os_snprintf(buf, buflen, "%s=%d\n", name, *val);
  	return os_snprintf(buf, buflen, "%d", *val);
  }
  
  
  static int wpa_config_get_str(const char *name, struct wpa_config *config,
  			      long offset, char *buf, size_t buflen,
  			      int pretty_print)
  {
  	char **val = (char **) (((u8 *) config) + (long) offset);
  	int res;
  
  	if (pretty_print)
  		res = os_snprintf(buf, buflen, "%s=%s\n", name,
  				  *val ? *val : "null");
  	else if (!*val)
  		return -1;
  	else
  		res = os_snprintf(buf, buflen, "%s", *val);
  	if (os_snprintf_error(buflen, res))
  		res = -1;
  
  	return res;
  }
  
  
  #ifdef CONFIG_P2P
  static int wpa_config_get_ipv4(const char *name, struct wpa_config *config,
  			       long offset, char *buf, size_t buflen,
  			       int pretty_print)
  {
  	void *val = ((u8 *) config) + (long) offset;
  	int res;
  	char addr[INET_ADDRSTRLEN];
  
  	if (!val || !inet_ntop(AF_INET, val, addr, sizeof(addr)))
  		return -1;
  
  	if (pretty_print)
  		res = os_snprintf(buf, buflen, "%s=%s\n", name, addr);
  	else
  		res = os_snprintf(buf, buflen, "%s", addr);
  
  	if (os_snprintf_error(buflen, res))
  		res = -1;
  
  	return res;
  }
  #endif /* CONFIG_P2P */
  
  
  #ifdef OFFSET
  #undef OFFSET
  #endif /* OFFSET */
  /* OFFSET: Get offset of a variable within the wpa_config structure */
  #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
  
  #define FUNC(f) #f, wpa_config_process_ ## f, NULL, OFFSET(f), NULL, NULL
  #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL, NULL
  #define _INT(f) #f, wpa_global_config_parse_int, wpa_config_get_int, OFFSET(f)
  #define INT(f) _INT(f), NULL, NULL
  #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
  #define _STR(f) #f, wpa_global_config_parse_str, wpa_config_get_str, OFFSET(f)
  #define STR(f) _STR(f), NULL, NULL
  #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
  #define BIN(f) #f, wpa_global_config_parse_bin, NULL, OFFSET(f), NULL, NULL
  #define IPV4(f) #f, wpa_global_config_parse_ipv4, wpa_config_get_ipv4,  \
  	OFFSET(f), NULL, NULL
  
  static const struct global_parse_data global_fields[] = {
  #ifdef CONFIG_CTRL_IFACE
  	{ STR(ctrl_interface), 0 },
  	{ FUNC_NO_VAR(no_ctrl_interface), 0 },
  	{ STR(ctrl_interface_group), 0 } /* deprecated */,
  #endif /* CONFIG_CTRL_IFACE */
  #ifdef CONFIG_MACSEC
  	{ INT_RANGE(eapol_version, 1, 3), 0 },
  #else /* CONFIG_MACSEC */
  	{ INT_RANGE(eapol_version, 1, 2), 0 },
  #endif /* CONFIG_MACSEC */
  	{ INT(ap_scan), 0 },
  	{ FUNC(bgscan), 0 },
  #ifdef CONFIG_MESH
  	{ INT(user_mpm), 0 },
  	{ INT_RANGE(max_peer_links, 0, 255), 0 },
  	{ INT(mesh_max_inactivity), 0 },
  #endif /* CONFIG_MESH */
  	{ INT(disable_scan_offload), 0 },
  	{ INT(fast_reauth), 0 },
  	{ STR(opensc_engine_path), 0 },
  	{ STR(pkcs11_engine_path), 0 },
  	{ STR(pkcs11_module_path), 0 },
  	{ STR(openssl_ciphers), 0 },
  	{ STR(pcsc_reader), 0 },
  	{ STR(pcsc_pin), 0 },
  	{ INT(external_sim), 0 },
  	{ STR(driver_param), 0 },
  	{ INT(dot11RSNAConfigPMKLifetime), 0 },
  	{ INT(dot11RSNAConfigPMKReauthThreshold), 0 },
  	{ INT(dot11RSNAConfigSATimeout), 0 },
  #ifndef CONFIG_NO_CONFIG_WRITE
  	{ INT(update_config), 0 },
  #endif /* CONFIG_NO_CONFIG_WRITE */
  	{ FUNC_NO_VAR(load_dynamic_eap), 0 },
  #ifdef CONFIG_WPS
  	{ FUNC(uuid), CFG_CHANGED_UUID },
  	{ STR_RANGE(device_name, 0, WPS_DEV_NAME_MAX_LEN),
  	  CFG_CHANGED_DEVICE_NAME },
  	{ STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
  	{ STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
  	{ STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
  	{ STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
  	{ FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
  	{ FUNC(os_version), CFG_CHANGED_OS_VERSION },
  	{ STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
  	{ INT_RANGE(wps_cred_processing, 0, 2), 0 },
  	{ FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
  #endif /* CONFIG_WPS */
  #ifdef CONFIG_P2P
  	{ FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
  	{ INT(p2p_listen_reg_class), 0 },
  	{ INT(p2p_listen_channel), 0 },
  	{ INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
  	{ INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
  	{ INT_RANGE(p2p_go_intent, 0, 15), 0 },
  	{ STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
  	{ INT_RANGE(persistent_reconnect, 0, 1), 0 },
  	{ INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
  	{ INT(p2p_group_idle), 0 },
  	{ INT_RANGE(p2p_passphrase_len, 8, 63),
  	  CFG_CHANGED_P2P_PASSPHRASE_LEN },
  	{ FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
  	{ FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
  	{ INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
  	{ INT_RANGE(p2p_optimize_listen_chan, 0, 1), 0 },
  	{ INT(p2p_go_ht40), 0 },
  	{ INT(p2p_go_vht), 0 },
  	{ INT(p2p_disabled), 0 },
  	{ INT_RANGE(p2p_go_ctwindow, 0, 127), 0 },
  	{ INT(p2p_no_group_iface), 0 },
  	{ INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
  	{ IPV4(ip_addr_go), 0 },
  	{ IPV4(ip_addr_mask), 0 },
  	{ IPV4(ip_addr_start), 0 },
  	{ IPV4(ip_addr_end), 0 },
  	{ INT_RANGE(p2p_cli_probe, 0, 1), 0 },
  #endif /* CONFIG_P2P */
  	{ FUNC(country), CFG_CHANGED_COUNTRY },
  	{ INT(bss_max_count), 0 },
  	{ INT(bss_expiration_age), 0 },
  	{ INT(bss_expiration_scan_count), 0 },
  	{ INT_RANGE(filter_ssids, 0, 1), 0 },
  	{ INT_RANGE(filter_rssi, -100, 0), 0 },
  	{ INT(max_num_sta), 0 },
  	{ INT_RANGE(disassoc_low_ack, 0, 1), 0 },
  #ifdef CONFIG_HS20
  	{ INT_RANGE(hs20, 0, 1), 0 },
  #endif /* CONFIG_HS20 */
  	{ INT_RANGE(interworking, 0, 1), 0 },
  	{ FUNC(hessid), 0 },
  	{ INT_RANGE(access_network_type, 0, 15), 0 },
  	{ INT_RANGE(pbc_in_m1, 0, 1), 0 },
  	{ STR(autoscan), 0 },
  	{ INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
  	  CFG_CHANGED_NFC_PASSWORD_TOKEN },
  	{ BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
  	{ BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
  	{ BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
  	{ STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
  	{ INT(p2p_go_max_inactivity), 0 },
  	{ INT_RANGE(auto_interworking, 0, 1), 0 },
  	{ INT(okc), 0 },
  	{ INT(pmf), 0 },
  	{ FUNC(sae_groups), 0 },
  	{ INT(dtim_period), 0 },
  	{ INT(beacon_int), 0 },
  	{ FUNC(ap_vendor_elements), 0 },
  	{ INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
  	{ FUNC(freq_list), 0 },
  	{ INT(scan_cur_freq), 0 },
  	{ INT(sched_scan_interval), 0 },
  	{ INT(tdls_external_control), 0},
  	{ STR(osu_dir), 0 },
  	{ STR(wowlan_triggers), 0 },
  	{ INT(p2p_search_delay), 0},
  	{ INT(mac_addr), 0 },
  	{ INT(rand_addr_lifetime), 0 },
  	{ INT(preassoc_mac_addr), 0 },
  	{ INT(key_mgmt_offload), 0},
  	{ INT(passive_scan), 0 },
  	{ INT(reassoc_same_bss_optim), 0 },
  	{ INT(wps_priority), 0},
  #ifdef CONFIG_FST
  	{ STR_RANGE(fst_group_id, 1, FST_MAX_GROUP_ID_LEN), 0 },
  	{ INT_RANGE(fst_priority, 1, FST_MAX_PRIO_VALUE), 0 },
  	{ INT_RANGE(fst_llt, 1, FST_MAX_LLT_MS), 0 },
  #endif /* CONFIG_FST */
  };
  
  #undef FUNC
  #undef _INT
  #undef INT
  #undef INT_RANGE
  #undef _STR
  #undef STR
  #undef STR_RANGE
  #undef BIN
  #undef IPV4
  #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
  
  
  int wpa_config_dump_values(struct wpa_config *config, char *buf, size_t buflen)
  {
  	int result = 0;
  	size_t i;
  
  	for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
  		const struct global_parse_data *field = &global_fields[i];
  		int tmp;
  
  		if (!field->get)
  			continue;
  
  		tmp = field->get(field->name, config, (long) field->param1,
  				 buf, buflen, 1);
  		if (tmp < 0)
  			return -1;
  		buf += tmp;
  		buflen -= tmp;
  		result += tmp;
  	}
  	return result;
  }
  
  
  int wpa_config_get_value(const char *name, struct wpa_config *config,
  			 char *buf, size_t buflen)
  {
  	size_t i;
  
  	for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
  		const struct global_parse_data *field = &global_fields[i];
  
  		if (os_strcmp(name, field->name) != 0)
  			continue;
  		if (!field->get)
  			break;
  		return field->get(name, config, (long) field->param1,
  				  buf, buflen, 0);
  	}
  
  	return -1;
  }
  
  
  int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
  {
  	size_t i;
  	int ret = 0;
  
  	for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
  		const struct global_parse_data *field = &global_fields[i];
  		size_t flen = os_strlen(field->name);
  		if (os_strncmp(pos, field->name, flen) != 0 ||
  		    pos[flen] != '=')
  			continue;
  
  		if (field->parser(field, config, line, pos + flen + 1)) {
  			wpa_printf(MSG_ERROR, "Line %d: failed to "
  				   "parse '%s'.", line, pos);
  			ret = -1;
  		}
  		if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
  			config->wps_nfc_pw_from_config = 1;
  		config->changed_parameters |= field->changed_flag;
  		break;
  	}
  	if (i == NUM_GLOBAL_FIELDS) {
  #ifdef CONFIG_AP
  		if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
  			char *tmp = os_strchr(pos, '=');
  			if (tmp == NULL) {
  				if (line < 0)
  					return -1;
  				wpa_printf(MSG_ERROR, "Line %d: invalid line "
  					   "'%s'", line, pos);
  				return -1;
  			}
  			*tmp++ = '\0';
  			if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
  						  tmp)) {
  				wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
  					   "AC item", line);
  				return -1;
  			}
  		}
  #endif /* CONFIG_AP */
  		if (line < 0)
  			return -1;
  		wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
  			   line, pos);
  		ret = -1;
  	}
  
  	return ret;
  }
  