2 * WPA Supplicant / Configuration parser and common functions
3 * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
18 #include "crypto/sha1.h"
19 #include "rsn_supp/wpa.h"
20 #include "eap_peer/eap.h"
24 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
25 #define NO_CONFIG_WRITE
29 * Structure for network configuration parsing. This data is used to implement
30 * a generic parser for each network block variable. The table of configuration
31 * variables is defined below in this file (ssid_fields[]).
34 /* Configuration variable name */
37 /* Parser function for this variable */
38 int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
39 int line, const char *value);
41 #ifndef NO_CONFIG_WRITE
42 /* Writer function (i.e., to get the variable in text format from
43 * internal presentation). */
44 char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
45 #endif /* NO_CONFIG_WRITE */
47 /* Variable specific parameters for the parser. */
48 void *param1, *param2, *param3, *param4;
50 /* 0 = this variable can be included in debug output and ctrl_iface
51 * 1 = this variable contains key/private data and it must not be
52 * included in debug output unless explicitly requested. In
53 * addition, this variable will not be readable through the
60 static char * wpa_config_parse_string(const char *value, size_t *len)
66 pos = os_strrchr(value, '"');
67 if (pos == NULL || pos[1] != '\0')
70 str = os_malloc(*len + 1);
73 os_memcpy(str, value, *len);
78 size_t tlen, hlen = os_strlen(value);
82 str = os_malloc(tlen + 1);
85 if (hexstr2bin(value, str, tlen)) {
96 static int wpa_config_parse_str(const struct parse_data *data,
97 struct wpa_ssid *ssid,
98 int line, const char *value)
100 size_t res_len, *dst_len;
103 if (os_strcmp(value, "NULL") == 0) {
104 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
111 tmp = wpa_config_parse_string(value, &res_len);
113 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
115 data->key_data ? "[KEY DATA REMOVED]" : value);
119 if (data->key_data) {
120 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
121 (u8 *) tmp, res_len);
123 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
124 (u8 *) tmp, res_len);
127 if (data->param3 && res_len < (size_t) data->param3) {
128 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
129 "min_len=%ld)", line, data->name,
130 (unsigned long) res_len, (long) data->param3);
135 if (data->param4 && res_len > (size_t) data->param4) {
136 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
137 "max_len=%ld)", line, data->name,
138 (unsigned long) res_len, (long) data->param4);
144 dst = (char **) (((u8 *) ssid) + (long) data->param1);
145 dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
155 #ifndef NO_CONFIG_WRITE
156 static int is_hex(const u8 *data, size_t len)
160 for (i = 0; i < len; i++) {
161 if (data[i] < 32 || data[i] >= 127)
168 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
172 buf = os_malloc(len + 3);
176 os_memcpy(buf + 1, value, len);
184 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
188 buf = os_zalloc(2 * len + 1);
191 wpa_snprintf_hex(buf, 2 * len + 1, value, len);
197 static char * wpa_config_write_string(const u8 *value, size_t len)
202 if (is_hex(value, len))
203 return wpa_config_write_string_hex(value, len);
205 return wpa_config_write_string_ascii(value, len);
209 static char * wpa_config_write_str(const struct parse_data *data,
210 struct wpa_ssid *ssid)
215 src = (char **) (((u8 *) ssid) + (long) data->param1);
220 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
222 len = os_strlen(*src);
224 return wpa_config_write_string((const u8 *) *src, len);
226 #endif /* NO_CONFIG_WRITE */
229 static int wpa_config_parse_int(const struct parse_data *data,
230 struct wpa_ssid *ssid,
231 int line, const char *value)
235 dst = (int *) (((u8 *) ssid) + (long) data->param1);
237 wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
239 if (data->param3 && *dst < (long) data->param3) {
240 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
241 "min_value=%ld)", line, data->name, *dst,
242 (long) data->param3);
243 *dst = (long) data->param3;
247 if (data->param4 && *dst > (long) data->param4) {
248 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
249 "max_value=%ld)", line, data->name, *dst,
250 (long) data->param4);
251 *dst = (long) data->param4;
259 #ifndef NO_CONFIG_WRITE
260 static char * wpa_config_write_int(const struct parse_data *data,
261 struct wpa_ssid *ssid)
266 src = (int *) (((u8 *) ssid) + (long) data->param1);
268 value = os_malloc(20);
271 res = os_snprintf(value, 20, "%d", *src);
272 if (res < 0 || res >= 20) {
276 value[20 - 1] = '\0';
279 #endif /* NO_CONFIG_WRITE */
282 static int wpa_config_parse_bssid(const struct parse_data *data,
283 struct wpa_ssid *ssid, int line,
286 if (hwaddr_aton(value, ssid->bssid)) {
287 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
292 wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
297 #ifndef NO_CONFIG_WRITE
298 static char * wpa_config_write_bssid(const struct parse_data *data,
299 struct wpa_ssid *ssid)
304 if (!ssid->bssid_set)
307 value = os_malloc(20);
310 res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
311 if (res < 0 || res >= 20) {
315 value[20 - 1] = '\0';
318 #endif /* NO_CONFIG_WRITE */
321 static int wpa_config_parse_psk(const struct parse_data *data,
322 struct wpa_ssid *ssid, int line,
326 #ifndef CONFIG_NO_PBKDF2
331 pos = os_strrchr(value, '"');
335 len = os_strlen(value);
336 if (len < 8 || len > 63) {
337 wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
338 "length %lu (expected: 8..63) '%s'.",
339 line, (unsigned long) len, value);
342 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
344 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
345 os_memcmp(ssid->passphrase, value, len) == 0)
348 os_free(ssid->passphrase);
349 ssid->passphrase = os_malloc(len + 1);
350 if (ssid->passphrase == NULL)
352 os_memcpy(ssid->passphrase, value, len);
353 ssid->passphrase[len] = '\0';
355 #else /* CONFIG_NO_PBKDF2 */
356 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
359 #endif /* CONFIG_NO_PBKDF2 */
362 if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
363 value[PMK_LEN * 2] != '\0') {
364 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
369 os_free(ssid->passphrase);
370 ssid->passphrase = NULL;
373 wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
378 #ifndef NO_CONFIG_WRITE
379 static char * wpa_config_write_psk(const struct parse_data *data,
380 struct wpa_ssid *ssid)
382 if (ssid->passphrase)
383 return wpa_config_write_string_ascii(
384 (const u8 *) ssid->passphrase,
385 os_strlen(ssid->passphrase));
388 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
392 #endif /* NO_CONFIG_WRITE */
395 static int wpa_config_parse_proto(const struct parse_data *data,
396 struct wpa_ssid *ssid, int line,
399 int val = 0, last, errors = 0;
400 char *start, *end, *buf;
402 buf = os_strdup(value);
407 while (*start != '\0') {
408 while (*start == ' ' || *start == '\t')
413 while (*end != ' ' && *end != '\t' && *end != '\0')
417 if (os_strcmp(start, "WPA") == 0)
418 val |= WPA_PROTO_WPA;
419 else if (os_strcmp(start, "RSN") == 0 ||
420 os_strcmp(start, "WPA2") == 0)
421 val |= WPA_PROTO_RSN;
423 wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
435 wpa_printf(MSG_ERROR,
436 "Line %d: no proto values configured.", line);
440 wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
442 return errors ? -1 : 0;
446 #ifndef NO_CONFIG_WRITE
447 static char * wpa_config_write_proto(const struct parse_data *data,
448 struct wpa_ssid *ssid)
451 char *buf, *pos, *end;
453 pos = buf = os_zalloc(10);
458 if (ssid->proto & WPA_PROTO_WPA) {
459 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
460 if (ret < 0 || ret >= end - pos)
466 if (ssid->proto & WPA_PROTO_RSN) {
467 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
468 if (ret < 0 || ret >= end - pos)
476 #endif /* NO_CONFIG_WRITE */
479 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
480 struct wpa_ssid *ssid, int line,
483 int val = 0, last, errors = 0;
484 char *start, *end, *buf;
486 buf = os_strdup(value);
491 while (*start != '\0') {
492 while (*start == ' ' || *start == '\t')
497 while (*end != ' ' && *end != '\t' && *end != '\0')
501 if (os_strcmp(start, "WPA-PSK") == 0)
502 val |= WPA_KEY_MGMT_PSK;
503 else if (os_strcmp(start, "WPA-EAP") == 0)
504 val |= WPA_KEY_MGMT_IEEE8021X;
505 else if (os_strcmp(start, "IEEE8021X") == 0)
506 val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
507 else if (os_strcmp(start, "NONE") == 0)
508 val |= WPA_KEY_MGMT_NONE;
509 else if (os_strcmp(start, "WPA-NONE") == 0)
510 val |= WPA_KEY_MGMT_WPA_NONE;
511 #ifdef CONFIG_IEEE80211R
512 else if (os_strcmp(start, "FT-PSK") == 0)
513 val |= WPA_KEY_MGMT_FT_PSK;
514 else if (os_strcmp(start, "FT-EAP") == 0)
515 val |= WPA_KEY_MGMT_FT_IEEE8021X;
516 #endif /* CONFIG_IEEE80211R */
517 #ifdef CONFIG_IEEE80211W
518 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
519 val |= WPA_KEY_MGMT_PSK_SHA256;
520 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
521 val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
522 #endif /* CONFIG_IEEE80211W */
524 else if (os_strcmp(start, "WPS") == 0)
525 val |= WPA_KEY_MGMT_WPS;
526 #endif /* CONFIG_WPS */
528 wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
540 wpa_printf(MSG_ERROR,
541 "Line %d: no key_mgmt values configured.", line);
545 wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
546 ssid->key_mgmt = val;
547 return errors ? -1 : 0;
551 #ifndef NO_CONFIG_WRITE
552 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
553 struct wpa_ssid *ssid)
555 char *buf, *pos, *end;
558 pos = buf = os_zalloc(50);
563 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
564 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
565 pos == buf ? "" : " ");
566 if (ret < 0 || ret >= end - pos) {
573 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
574 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
575 pos == buf ? "" : " ");
576 if (ret < 0 || ret >= end - pos) {
583 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
584 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
585 pos == buf ? "" : " ");
586 if (ret < 0 || ret >= end - pos) {
593 if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
594 ret = os_snprintf(pos, end - pos, "%sNONE",
595 pos == buf ? "" : " ");
596 if (ret < 0 || ret >= end - pos) {
603 if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
604 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
605 pos == buf ? "" : " ");
606 if (ret < 0 || ret >= end - pos) {
613 #ifdef CONFIG_IEEE80211R
614 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK)
615 pos += os_snprintf(pos, end - pos, "%sFT-PSK",
616 pos == buf ? "" : " ");
618 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
619 pos += os_snprintf(pos, end - pos, "%sFT-EAP",
620 pos == buf ? "" : " ");
621 #endif /* CONFIG_IEEE80211R */
623 #ifdef CONFIG_IEEE80211W
624 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
625 pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
626 pos == buf ? "" : " ");
628 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
629 pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
630 pos == buf ? "" : " ");
631 #endif /* CONFIG_IEEE80211W */
634 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
635 pos += os_snprintf(pos, end - pos, "%sWPS",
636 pos == buf ? "" : " ");
637 #endif /* CONFIG_WPS */
641 #endif /* NO_CONFIG_WRITE */
644 static int wpa_config_parse_cipher(int line, const char *value)
647 char *start, *end, *buf;
649 buf = os_strdup(value);
654 while (*start != '\0') {
655 while (*start == ' ' || *start == '\t')
660 while (*end != ' ' && *end != '\t' && *end != '\0')
664 if (os_strcmp(start, "CCMP") == 0)
665 val |= WPA_CIPHER_CCMP;
666 else if (os_strcmp(start, "TKIP") == 0)
667 val |= WPA_CIPHER_TKIP;
668 else if (os_strcmp(start, "WEP104") == 0)
669 val |= WPA_CIPHER_WEP104;
670 else if (os_strcmp(start, "WEP40") == 0)
671 val |= WPA_CIPHER_WEP40;
672 else if (os_strcmp(start, "NONE") == 0)
673 val |= WPA_CIPHER_NONE;
675 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
688 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
696 #ifndef NO_CONFIG_WRITE
697 static char * wpa_config_write_cipher(int cipher)
699 char *buf, *pos, *end;
702 pos = buf = os_zalloc(50);
707 if (cipher & WPA_CIPHER_CCMP) {
708 ret = os_snprintf(pos, end - pos, "%sCCMP",
709 pos == buf ? "" : " ");
710 if (ret < 0 || ret >= end - pos) {
717 if (cipher & WPA_CIPHER_TKIP) {
718 ret = os_snprintf(pos, end - pos, "%sTKIP",
719 pos == buf ? "" : " ");
720 if (ret < 0 || ret >= end - pos) {
727 if (cipher & WPA_CIPHER_WEP104) {
728 ret = os_snprintf(pos, end - pos, "%sWEP104",
729 pos == buf ? "" : " ");
730 if (ret < 0 || ret >= end - pos) {
737 if (cipher & WPA_CIPHER_WEP40) {
738 ret = os_snprintf(pos, end - pos, "%sWEP40",
739 pos == buf ? "" : " ");
740 if (ret < 0 || ret >= end - pos) {
747 if (cipher & WPA_CIPHER_NONE) {
748 ret = os_snprintf(pos, end - pos, "%sNONE",
749 pos == buf ? "" : " ");
750 if (ret < 0 || ret >= end - pos) {
759 #endif /* NO_CONFIG_WRITE */
762 static int wpa_config_parse_pairwise(const struct parse_data *data,
763 struct wpa_ssid *ssid, int line,
767 val = wpa_config_parse_cipher(line, value);
770 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_NONE)) {
771 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
772 "(0x%x).", line, val);
776 wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
777 ssid->pairwise_cipher = val;
782 #ifndef NO_CONFIG_WRITE
783 static char * wpa_config_write_pairwise(const struct parse_data *data,
784 struct wpa_ssid *ssid)
786 return wpa_config_write_cipher(ssid->pairwise_cipher);
788 #endif /* NO_CONFIG_WRITE */
791 static int wpa_config_parse_group(const struct parse_data *data,
792 struct wpa_ssid *ssid, int line,
796 val = wpa_config_parse_cipher(line, value);
799 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_WEP104 |
801 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
802 "(0x%x).", line, val);
806 wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
807 ssid->group_cipher = val;
812 #ifndef NO_CONFIG_WRITE
813 static char * wpa_config_write_group(const struct parse_data *data,
814 struct wpa_ssid *ssid)
816 return wpa_config_write_cipher(ssid->group_cipher);
818 #endif /* NO_CONFIG_WRITE */
821 static int wpa_config_parse_auth_alg(const struct parse_data *data,
822 struct wpa_ssid *ssid, int line,
825 int val = 0, last, errors = 0;
826 char *start, *end, *buf;
828 buf = os_strdup(value);
833 while (*start != '\0') {
834 while (*start == ' ' || *start == '\t')
839 while (*end != ' ' && *end != '\t' && *end != '\0')
843 if (os_strcmp(start, "OPEN") == 0)
844 val |= WPA_AUTH_ALG_OPEN;
845 else if (os_strcmp(start, "SHARED") == 0)
846 val |= WPA_AUTH_ALG_SHARED;
847 else if (os_strcmp(start, "LEAP") == 0)
848 val |= WPA_AUTH_ALG_LEAP;
850 wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
862 wpa_printf(MSG_ERROR,
863 "Line %d: no auth_alg values configured.", line);
867 wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
868 ssid->auth_alg = val;
869 return errors ? -1 : 0;
873 #ifndef NO_CONFIG_WRITE
874 static char * wpa_config_write_auth_alg(const struct parse_data *data,
875 struct wpa_ssid *ssid)
877 char *buf, *pos, *end;
880 pos = buf = os_zalloc(30);
885 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
886 ret = os_snprintf(pos, end - pos, "%sOPEN",
887 pos == buf ? "" : " ");
888 if (ret < 0 || ret >= end - pos) {
895 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
896 ret = os_snprintf(pos, end - pos, "%sSHARED",
897 pos == buf ? "" : " ");
898 if (ret < 0 || ret >= end - pos) {
905 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
906 ret = os_snprintf(pos, end - pos, "%sLEAP",
907 pos == buf ? "" : " ");
908 if (ret < 0 || ret >= end - pos) {
917 #endif /* NO_CONFIG_WRITE */
920 static int * wpa_config_parse_freqs(const struct parse_data *data,
921 struct wpa_ssid *ssid, int line,
930 freqs = os_zalloc((len + 1) * sizeof(int));
941 n = os_realloc(freqs, (len * 2 + 1) * sizeof(int));
946 for (i = len; i <= len * 2; i++)
952 freqs[used] = atoi(pos);
953 if (freqs[used] == 0)
956 pos = os_strchr(pos + 1, ' ');
963 static int wpa_config_parse_scan_freq(const struct parse_data *data,
964 struct wpa_ssid *ssid, int line,
969 freqs = wpa_config_parse_freqs(data, ssid, line, value);
972 os_free(ssid->scan_freq);
973 ssid->scan_freq = freqs;
979 static int wpa_config_parse_freq_list(const struct parse_data *data,
980 struct wpa_ssid *ssid, int line,
985 freqs = wpa_config_parse_freqs(data, ssid, line, value);
988 os_free(ssid->freq_list);
989 ssid->freq_list = freqs;
995 #ifndef NO_CONFIG_WRITE
996 static char * wpa_config_write_freqs(const struct parse_data *data,
999 char *buf, *pos, *end;
1007 for (i = 0; freqs[i]; i++)
1010 pos = buf = os_zalloc(10 * count + 1);
1013 end = buf + 10 * count + 1;
1015 for (i = 0; freqs[i]; i++) {
1016 ret = os_snprintf(pos, end - pos, "%s%u",
1017 i == 0 ? "" : " ", freqs[i]);
1018 if (ret < 0 || ret >= end - pos) {
1029 static char * wpa_config_write_scan_freq(const struct parse_data *data,
1030 struct wpa_ssid *ssid)
1032 return wpa_config_write_freqs(data, ssid->scan_freq);
1036 static char * wpa_config_write_freq_list(const struct parse_data *data,
1037 struct wpa_ssid *ssid)
1039 return wpa_config_write_freqs(data, ssid->freq_list);
1041 #endif /* NO_CONFIG_WRITE */
1044 #ifdef IEEE8021X_EAPOL
1045 static int wpa_config_parse_eap(const struct parse_data *data,
1046 struct wpa_ssid *ssid, int line,
1049 int last, errors = 0;
1050 char *start, *end, *buf;
1051 struct eap_method_type *methods = NULL, *tmp;
1052 size_t num_methods = 0;
1054 buf = os_strdup(value);
1059 while (*start != '\0') {
1060 while (*start == ' ' || *start == '\t')
1065 while (*end != ' ' && *end != '\t' && *end != '\0')
1067 last = *end == '\0';
1070 methods = os_realloc(methods,
1071 (num_methods + 1) * sizeof(*methods));
1072 if (methods == NULL) {
1077 methods[num_methods].method = eap_peer_get_type(
1078 start, &methods[num_methods].vendor);
1079 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1080 methods[num_methods].method == EAP_TYPE_NONE) {
1081 wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1082 "'%s'", line, start);
1083 wpa_printf(MSG_ERROR, "You may need to add support for"
1084 " this EAP method during wpa_supplicant\n"
1085 "build time configuration.\n"
1086 "See README for more information.");
1088 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1089 methods[num_methods].method == EAP_TYPE_LEAP)
1101 methods = os_realloc(methods, (num_methods + 1) * sizeof(*methods));
1102 if (methods == NULL) {
1106 methods[num_methods].vendor = EAP_VENDOR_IETF;
1107 methods[num_methods].method = EAP_TYPE_NONE;
1110 wpa_hexdump(MSG_MSGDUMP, "eap methods",
1111 (u8 *) methods, num_methods * sizeof(*methods));
1112 ssid->eap.eap_methods = methods;
1113 return errors ? -1 : 0;
1117 static char * wpa_config_write_eap(const struct parse_data *data,
1118 struct wpa_ssid *ssid)
1121 char *buf, *pos, *end;
1122 const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1125 if (eap_methods == NULL)
1128 pos = buf = os_zalloc(100);
1133 for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1134 eap_methods[i].method != EAP_TYPE_NONE; i++) {
1135 name = eap_get_name(eap_methods[i].vendor,
1136 eap_methods[i].method);
1138 ret = os_snprintf(pos, end - pos, "%s%s",
1139 pos == buf ? "" : " ", name);
1140 if (ret < 0 || ret >= end - pos)
1152 static int wpa_config_parse_password(const struct parse_data *data,
1153 struct wpa_ssid *ssid, int line,
1158 if (os_strcmp(value, "NULL") == 0) {
1159 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1160 os_free(ssid->eap.password);
1161 ssid->eap.password = NULL;
1162 ssid->eap.password_len = 0;
1166 if (os_strncmp(value, "hash:", 5) != 0) {
1170 tmp = wpa_config_parse_string(value, &res_len);
1172 wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1176 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1177 (u8 *) tmp, res_len);
1179 os_free(ssid->eap.password);
1180 ssid->eap.password = (u8 *) tmp;
1181 ssid->eap.password_len = res_len;
1182 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1188 /* NtPasswordHash: hash:<32 hex digits> */
1189 if (os_strlen(value + 5) != 2 * 16) {
1190 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1191 "(expected 32 hex digits)", line);
1195 hash = os_malloc(16);
1199 if (hexstr2bin(value + 5, hash, 16)) {
1201 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1205 wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1207 os_free(ssid->eap.password);
1208 ssid->eap.password = hash;
1209 ssid->eap.password_len = 16;
1210 ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1216 static char * wpa_config_write_password(const struct parse_data *data,
1217 struct wpa_ssid *ssid)
1221 if (ssid->eap.password == NULL)
1224 if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1225 return wpa_config_write_string(
1226 ssid->eap.password, ssid->eap.password_len);
1229 buf = os_malloc(5 + 32 + 1);
1233 os_memcpy(buf, "hash:", 5);
1234 wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1238 #endif /* IEEE8021X_EAPOL */
1241 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1242 const char *value, int idx)
1244 char *buf, title[20];
1247 buf = wpa_config_parse_string(value, len);
1249 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1253 if (*len > MAX_WEP_KEY_LEN) {
1254 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1259 os_memcpy(key, buf, *len);
1261 res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1262 if (res >= 0 && (size_t) res < sizeof(title))
1263 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1268 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1269 struct wpa_ssid *ssid, int line,
1272 return wpa_config_parse_wep_key(ssid->wep_key[0],
1273 &ssid->wep_key_len[0], line,
1278 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1279 struct wpa_ssid *ssid, int line,
1282 return wpa_config_parse_wep_key(ssid->wep_key[1],
1283 &ssid->wep_key_len[1], line,
1288 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1289 struct wpa_ssid *ssid, int line,
1292 return wpa_config_parse_wep_key(ssid->wep_key[2],
1293 &ssid->wep_key_len[2], line,
1298 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1299 struct wpa_ssid *ssid, int line,
1302 return wpa_config_parse_wep_key(ssid->wep_key[3],
1303 &ssid->wep_key_len[3], line,
1308 #ifndef NO_CONFIG_WRITE
1309 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1311 if (ssid->wep_key_len[idx] == 0)
1313 return wpa_config_write_string(ssid->wep_key[idx],
1314 ssid->wep_key_len[idx]);
1318 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1319 struct wpa_ssid *ssid)
1321 return wpa_config_write_wep_key(ssid, 0);
1325 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1326 struct wpa_ssid *ssid)
1328 return wpa_config_write_wep_key(ssid, 1);
1332 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1333 struct wpa_ssid *ssid)
1335 return wpa_config_write_wep_key(ssid, 2);
1339 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1340 struct wpa_ssid *ssid)
1342 return wpa_config_write_wep_key(ssid, 3);
1344 #endif /* NO_CONFIG_WRITE */
1347 /* Helper macros for network block parser */
1352 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1353 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1355 /* STR: Define a string variable for an ASCII string; f = field name */
1356 #ifdef NO_CONFIG_WRITE
1357 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1358 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1359 #else /* NO_CONFIG_WRITE */
1360 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1361 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1362 #endif /* NO_CONFIG_WRITE */
1363 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1364 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1365 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1366 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1368 /* STR_LEN: Define a string variable with a separate variable for storing the
1369 * data length. Unlike STR(), this can be used to store arbitrary binary data
1370 * (i.e., even nul termination character). */
1371 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1372 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1373 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1374 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1375 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1377 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1378 * explicitly specified. */
1379 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1380 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1381 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1383 #ifdef NO_CONFIG_WRITE
1384 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1385 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1386 #else /* NO_CONFIG_WRITE */
1387 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1388 OFFSET(f), (void *) 0
1389 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1390 OFFSET(eap.f), (void *) 0
1391 #endif /* NO_CONFIG_WRITE */
1393 /* INT: Define an integer variable */
1394 #define INT(f) _INT(f), NULL, NULL, 0
1395 #define INTe(f) _INTe(f), NULL, NULL, 0
1397 /* INT_RANGE: Define an integer variable with allowed value range */
1398 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1400 /* FUNC: Define a configuration variable that uses a custom function for
1401 * parsing and writing the value. */
1402 #ifdef NO_CONFIG_WRITE
1403 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1404 #else /* NO_CONFIG_WRITE */
1405 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1406 NULL, NULL, NULL, NULL
1407 #endif /* NO_CONFIG_WRITE */
1408 #define FUNC(f) _FUNC(f), 0
1409 #define FUNC_KEY(f) _FUNC(f), 1
1412 * Table of network configuration variables. This table is used to parse each
1413 * network configuration variable, e.g., each line in wpa_supplicant.conf file
1414 * that is inside a network block.
1416 * This table is generated using the helper macros defined above and with
1417 * generous help from the C pre-processor. The field name is stored as a string
1418 * into .name and for STR and INT types, the offset of the target buffer within
1419 * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1420 * offset to the field containing the length of the configuration variable.
1421 * .param3 and .param4 can be used to mark the allowed range (length for STR
1422 * and value for INT).
1424 * For each configuration line in wpa_supplicant.conf, the parser goes through
1425 * this table and select the entry that matches with the field name. The parser
1426 * function (.parser) is then called to parse the actual value of the field.
1428 * This kind of mechanism makes it easy to add new configuration parameters,
1429 * since only one line needs to be added into this table and into the
1430 * struct wpa_ssid definition if the new variable is either a string or
1431 * integer. More complex types will need to use their own parser and writer
1434 static const struct parse_data ssid_fields[] = {
1435 { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1436 { INT_RANGE(scan_ssid, 0, 1) },
1444 { FUNC(scan_freq) },
1445 { FUNC(freq_list) },
1446 #ifdef IEEE8021X_EAPOL
1448 { STR_LENe(identity) },
1449 { STR_LENe(anonymous_identity) },
1450 { FUNC_KEY(password) },
1453 { STRe(client_cert) },
1454 { STRe(private_key) },
1455 { STR_KEYe(private_key_passwd) },
1457 { STRe(subject_match) },
1458 { STRe(altsubject_match) },
1461 { STRe(client_cert2) },
1462 { STRe(private_key2) },
1463 { STR_KEYe(private_key2_passwd) },
1465 { STRe(subject_match2) },
1466 { STRe(altsubject_match2) },
1471 { STRe(engine_id) },
1474 { STRe(ca_cert_id) },
1476 { STRe(engine2_id) },
1479 { STRe(ca_cert2_id) },
1482 { INT(eapol_flags) },
1483 #endif /* IEEE8021X_EAPOL */
1484 { FUNC_KEY(wep_key0) },
1485 { FUNC_KEY(wep_key1) },
1486 { FUNC_KEY(wep_key2) },
1487 { FUNC_KEY(wep_key3) },
1488 { INT(wep_tx_keyidx) },
1490 #ifdef IEEE8021X_EAPOL
1491 { INT(eap_workaround) },
1493 { INTe(fragment_size) },
1494 #endif /* IEEE8021X_EAPOL */
1495 { INT_RANGE(mode, 0, 2) },
1496 { INT_RANGE(proactive_key_caching, 0, 1) },
1497 { INT_RANGE(disabled, 0, 1) },
1499 #ifdef CONFIG_IEEE80211W
1500 { INT_RANGE(ieee80211w, 0, 2) },
1501 #endif /* CONFIG_IEEE80211W */
1502 { INT_RANGE(peerkey, 0, 1) },
1503 { INT_RANGE(mixed_cell, 0, 1) },
1504 { INT_RANGE(frequency, 0, 10000) },
1505 { INT(wpa_ptk_rekey) },
1518 #undef STR_RANGE_KEY
1525 #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0]))
1529 * wpa_config_add_prio_network - Add a network to priority lists
1530 * @config: Configuration data from wpa_config_read()
1531 * @ssid: Pointer to the network configuration to be added to the list
1532 * Returns: 0 on success, -1 on failure
1534 * This function is used to add a network block to the priority list of
1535 * networks. This must be called for each network when reading in the full
1536 * configuration. In addition, this can be used indirectly when updating
1537 * priorities by calling wpa_config_update_prio_list().
1539 int wpa_config_add_prio_network(struct wpa_config *config,
1540 struct wpa_ssid *ssid)
1543 struct wpa_ssid *prev, **nlist;
1546 * Add to an existing priority list if one is available for the
1547 * configured priority level for this network.
1549 for (prio = 0; prio < config->num_prio; prio++) {
1550 prev = config->pssid[prio];
1551 if (prev->priority == ssid->priority) {
1559 /* First network for this priority - add a new priority list */
1560 nlist = os_realloc(config->pssid,
1561 (config->num_prio + 1) * sizeof(struct wpa_ssid *));
1565 for (prio = 0; prio < config->num_prio; prio++) {
1566 if (nlist[prio]->priority < ssid->priority)
1570 os_memmove(&nlist[prio + 1], &nlist[prio],
1571 (config->num_prio - prio) * sizeof(struct wpa_ssid *));
1575 config->pssid = nlist;
1582 * wpa_config_update_prio_list - Update network priority list
1583 * @config: Configuration data from wpa_config_read()
1584 * Returns: 0 on success, -1 on failure
1586 * This function is called to update the priority list of networks in the
1587 * configuration when a network is being added or removed. This is also called
1588 * if a priority for a network is changed.
1590 int wpa_config_update_prio_list(struct wpa_config *config)
1592 struct wpa_ssid *ssid;
1595 os_free(config->pssid);
1596 config->pssid = NULL;
1597 config->num_prio = 0;
1599 ssid = config->ssid;
1602 if (wpa_config_add_prio_network(config, ssid) < 0)
1611 #ifdef IEEE8021X_EAPOL
1612 static void eap_peer_config_free(struct eap_peer_config *eap)
1614 os_free(eap->eap_methods);
1615 os_free(eap->identity);
1616 os_free(eap->anonymous_identity);
1617 os_free(eap->password);
1618 os_free(eap->ca_cert);
1619 os_free(eap->ca_path);
1620 os_free(eap->client_cert);
1621 os_free(eap->private_key);
1622 os_free(eap->private_key_passwd);
1623 os_free(eap->dh_file);
1624 os_free(eap->subject_match);
1625 os_free(eap->altsubject_match);
1626 os_free(eap->ca_cert2);
1627 os_free(eap->ca_path2);
1628 os_free(eap->client_cert2);
1629 os_free(eap->private_key2);
1630 os_free(eap->private_key2_passwd);
1631 os_free(eap->dh_file2);
1632 os_free(eap->subject_match2);
1633 os_free(eap->altsubject_match2);
1634 os_free(eap->phase1);
1635 os_free(eap->phase2);
1638 os_free(eap->engine_id);
1639 os_free(eap->key_id);
1640 os_free(eap->cert_id);
1641 os_free(eap->ca_cert_id);
1642 os_free(eap->key2_id);
1643 os_free(eap->cert2_id);
1644 os_free(eap->ca_cert2_id);
1646 os_free(eap->engine2_id);
1648 os_free(eap->pending_req_otp);
1649 os_free(eap->pac_file);
1650 os_free(eap->new_password);
1652 #endif /* IEEE8021X_EAPOL */
1656 * wpa_config_free_ssid - Free network/ssid configuration data
1657 * @ssid: Configuration data for the network
1659 * This function frees all resources allocated for the network configuration
1662 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1664 os_free(ssid->ssid);
1665 os_free(ssid->passphrase);
1666 #ifdef IEEE8021X_EAPOL
1667 eap_peer_config_free(&ssid->eap);
1668 #endif /* IEEE8021X_EAPOL */
1669 os_free(ssid->id_str);
1670 os_free(ssid->scan_freq);
1671 os_free(ssid->freq_list);
1672 os_free(ssid->bgscan);
1678 * wpa_config_free - Free configuration data
1679 * @config: Configuration data from wpa_config_read()
1681 * This function frees all resources allocated for the configuration data by
1682 * wpa_config_read().
1684 void wpa_config_free(struct wpa_config *config)
1686 #ifndef CONFIG_NO_CONFIG_BLOBS
1687 struct wpa_config_blob *blob, *prevblob;
1688 #endif /* CONFIG_NO_CONFIG_BLOBS */
1689 struct wpa_ssid *ssid, *prev = NULL;
1690 ssid = config->ssid;
1694 wpa_config_free_ssid(prev);
1697 #ifndef CONFIG_NO_CONFIG_BLOBS
1698 blob = config->blobs;
1703 wpa_config_free_blob(prevblob);
1705 #endif /* CONFIG_NO_CONFIG_BLOBS */
1707 os_free(config->ctrl_interface);
1708 os_free(config->ctrl_interface_group);
1709 os_free(config->opensc_engine_path);
1710 os_free(config->pkcs11_engine_path);
1711 os_free(config->pkcs11_module_path);
1712 os_free(config->driver_param);
1713 os_free(config->device_name);
1714 os_free(config->manufacturer);
1715 os_free(config->model_name);
1716 os_free(config->model_number);
1717 os_free(config->serial_number);
1718 os_free(config->device_type);
1719 os_free(config->config_methods);
1720 os_free(config->pssid);
1726 * wpa_config_get_network - Get configured network based on id
1727 * @config: Configuration data from wpa_config_read()
1728 * @id: Unique network id to search for
1729 * Returns: Network configuration or %NULL if not found
1731 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
1733 struct wpa_ssid *ssid;
1735 ssid = config->ssid;
1747 * wpa_config_add_network - Add a new network with empty configuration
1748 * @config: Configuration data from wpa_config_read()
1749 * Returns: The new network configuration or %NULL if operation failed
1751 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
1754 struct wpa_ssid *ssid, *last = NULL;
1757 ssid = config->ssid;
1766 ssid = os_zalloc(sizeof(*ssid));
1773 config->ssid = ssid;
1775 wpa_config_update_prio_list(config);
1782 * wpa_config_remove_network - Remove a configured network based on id
1783 * @config: Configuration data from wpa_config_read()
1784 * @id: Unique network id to search for
1785 * Returns: 0 on success, or -1 if the network was not found
1787 int wpa_config_remove_network(struct wpa_config *config, int id)
1789 struct wpa_ssid *ssid, *prev = NULL;
1791 ssid = config->ssid;
1803 prev->next = ssid->next;
1805 config->ssid = ssid->next;
1807 wpa_config_update_prio_list(config);
1808 wpa_config_free_ssid(ssid);
1814 * wpa_config_set_network_defaults - Set network default values
1815 * @ssid: Pointer to network configuration data
1817 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
1819 ssid->proto = DEFAULT_PROTO;
1820 ssid->pairwise_cipher = DEFAULT_PAIRWISE;
1821 ssid->group_cipher = DEFAULT_GROUP;
1822 ssid->key_mgmt = DEFAULT_KEY_MGMT;
1823 #ifdef IEEE8021X_EAPOL
1824 ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
1825 ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
1826 ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
1827 #endif /* IEEE8021X_EAPOL */
1832 * wpa_config_set - Set a variable in network configuration
1833 * @ssid: Pointer to network configuration data
1834 * @var: Variable name, e.g., "ssid"
1835 * @value: Variable value
1836 * @line: Line number in configuration file or 0 if not used
1837 * Returns: 0 on success, -1 on failure
1839 * This function can be used to set network configuration variables based on
1840 * both the configuration file and management interface input. The value
1841 * parameter must be in the same format as the text-based configuration file is
1842 * using. For example, strings are using double quotation marks.
1844 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
1850 if (ssid == NULL || var == NULL || value == NULL)
1853 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1854 const struct parse_data *field = &ssid_fields[i];
1855 if (os_strcmp(var, field->name) != 0)
1858 if (field->parser(field, ssid, line, value)) {
1860 wpa_printf(MSG_ERROR, "Line %d: failed to "
1861 "parse %s '%s'.", line, var, value);
1867 if (i == NUM_SSID_FIELDS) {
1869 wpa_printf(MSG_ERROR, "Line %d: unknown network field "
1870 "'%s'.", line, var);
1880 * wpa_config_get_all - Get all options from network configuration
1881 * @ssid: Pointer to network configuration data
1882 * @get_keys: Determines if keys/passwords will be included in returned list
1883 * Returns: %NULL terminated list of all set keys and their values in the form
1884 * of [key1, val1, key2, val2, ... , NULL]
1886 * This function can be used to get list of all configured network properties.
1887 * The caller is responsible for freeing the returned list and all its
1890 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
1892 const struct parse_data *field;
1898 props = os_zalloc(sizeof(char *) * ((2 * NUM_SSID_FIELDS) + 1));
1903 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1904 field = &ssid_fields[i];
1905 if (field->key_data && !get_keys)
1907 value = field->writer(field, ssid);
1910 if (os_strlen(value) == 0) {
1915 key = os_strdup(field->name);
1921 props[fields_num * 2] = key;
1922 props[fields_num * 2 + 1] = value;
1938 #ifndef NO_CONFIG_WRITE
1940 * wpa_config_get - Get a variable in network configuration
1941 * @ssid: Pointer to network configuration data
1942 * @var: Variable name, e.g., "ssid"
1943 * Returns: Value of the variable or %NULL on failure
1945 * This function can be used to get network configuration variables. The
1946 * returned value is a copy of the configuration variable in text format, i.e,.
1947 * the same format that the text-based configuration file and wpa_config_set()
1948 * are using for the value. The caller is responsible for freeing the returned
1951 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
1955 if (ssid == NULL || var == NULL)
1958 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1959 const struct parse_data *field = &ssid_fields[i];
1960 if (os_strcmp(var, field->name) == 0)
1961 return field->writer(field, ssid);
1969 * wpa_config_get_no_key - Get a variable in network configuration (no keys)
1970 * @ssid: Pointer to network configuration data
1971 * @var: Variable name, e.g., "ssid"
1972 * Returns: Value of the variable or %NULL on failure
1974 * This function can be used to get network configuration variable like
1975 * wpa_config_get(). The only difference is that this functions does not expose
1976 * key/password material from the configuration. In case a key/password field
1977 * is requested, the returned value is an empty string or %NULL if the variable
1978 * is not set or "*" if the variable is set (regardless of its value). The
1979 * returned value is a copy of the configuration variable in text format, i.e,.
1980 * the same format that the text-based configuration file and wpa_config_set()
1981 * are using for the value. The caller is responsible for freeing the returned
1984 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
1988 if (ssid == NULL || var == NULL)
1991 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1992 const struct parse_data *field = &ssid_fields[i];
1993 if (os_strcmp(var, field->name) == 0) {
1994 char *res = field->writer(field, ssid);
1995 if (field->key_data) {
1996 if (res && res[0]) {
1997 wpa_printf(MSG_DEBUG, "Do not allow "
1998 "key_data field to be "
2001 return os_strdup("*");
2013 #endif /* NO_CONFIG_WRITE */
2017 * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2018 * @ssid: Pointer to network configuration data
2020 * This function must be called to update WPA PSK when either SSID or the
2021 * passphrase has changed for the network configuration.
2023 void wpa_config_update_psk(struct wpa_ssid *ssid)
2025 #ifndef CONFIG_NO_PBKDF2
2026 pbkdf2_sha1(ssid->passphrase,
2027 (char *) ssid->ssid, ssid->ssid_len, 4096,
2028 ssid->psk, PMK_LEN);
2029 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2030 ssid->psk, PMK_LEN);
2032 #endif /* CONFIG_NO_PBKDF2 */
2036 #ifndef CONFIG_NO_CONFIG_BLOBS
2038 * wpa_config_get_blob - Get a named configuration blob
2039 * @config: Configuration data from wpa_config_read()
2040 * @name: Name of the blob
2041 * Returns: Pointer to blob data or %NULL if not found
2043 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
2046 struct wpa_config_blob *blob = config->blobs;
2049 if (os_strcmp(blob->name, name) == 0)
2058 * wpa_config_set_blob - Set or add a named configuration blob
2059 * @config: Configuration data from wpa_config_read()
2060 * @blob: New value for the blob
2062 * Adds a new configuration blob or replaces the current value of an existing
2065 void wpa_config_set_blob(struct wpa_config *config,
2066 struct wpa_config_blob *blob)
2068 wpa_config_remove_blob(config, blob->name);
2069 blob->next = config->blobs;
2070 config->blobs = blob;
2075 * wpa_config_free_blob - Free blob data
2076 * @blob: Pointer to blob to be freed
2078 void wpa_config_free_blob(struct wpa_config_blob *blob)
2081 os_free(blob->name);
2082 os_free(blob->data);
2089 * wpa_config_remove_blob - Remove a named configuration blob
2090 * @config: Configuration data from wpa_config_read()
2091 * @name: Name of the blob to remove
2092 * Returns: 0 if blob was removed or -1 if blob was not found
2094 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
2096 struct wpa_config_blob *pos = config->blobs, *prev = NULL;
2099 if (os_strcmp(pos->name, name) == 0) {
2101 prev->next = pos->next;
2103 config->blobs = pos->next;
2104 wpa_config_free_blob(pos);
2113 #endif /* CONFIG_NO_CONFIG_BLOBS */
2117 * wpa_config_alloc_empty - Allocate an empty configuration
2118 * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
2120 * @driver_param: Driver parameters
2121 * Returns: Pointer to allocated configuration data or %NULL on failure
2123 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
2124 const char *driver_param)
2126 struct wpa_config *config;
2128 config = os_zalloc(sizeof(*config));
2131 config->eapol_version = DEFAULT_EAPOL_VERSION;
2132 config->ap_scan = DEFAULT_AP_SCAN;
2133 config->fast_reauth = DEFAULT_FAST_REAUTH;
2134 config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
2137 config->ctrl_interface = os_strdup(ctrl_interface);
2139 config->driver_param = os_strdup(driver_param);
2145 #ifndef CONFIG_NO_STDOUT_DEBUG
2147 * wpa_config_debug_dump_networks - Debug dump of configured networks
2148 * @config: Configuration data from wpa_config_read()
2150 void wpa_config_debug_dump_networks(struct wpa_config *config)
2153 struct wpa_ssid *ssid;
2155 for (prio = 0; prio < config->num_prio; prio++) {
2156 ssid = config->pssid[prio];
2157 wpa_printf(MSG_DEBUG, "Priority group %d",
2160 wpa_printf(MSG_DEBUG, " id=%d ssid='%s'",
2162 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2167 #endif /* CONFIG_NO_STDOUT_DEBUG */