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 "utils/uuid.h"
19 #include "crypto/sha1.h"
20 #include "rsn_supp/wpa.h"
21 #include "eap_peer/eap.h"
25 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
26 #define NO_CONFIG_WRITE
30 * Structure for network configuration parsing. This data is used to implement
31 * a generic parser for each network block variable. The table of configuration
32 * variables is defined below in this file (ssid_fields[]).
35 /* Configuration variable name */
38 /* Parser function for this variable */
39 int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
40 int line, const char *value);
42 #ifndef NO_CONFIG_WRITE
43 /* Writer function (i.e., to get the variable in text format from
44 * internal presentation). */
45 char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
46 #endif /* NO_CONFIG_WRITE */
48 /* Variable specific parameters for the parser. */
49 void *param1, *param2, *param3, *param4;
51 /* 0 = this variable can be included in debug output and ctrl_iface
52 * 1 = this variable contains key/private data and it must not be
53 * included in debug output unless explicitly requested. In
54 * addition, this variable will not be readable through the
61 static char * wpa_config_parse_string(const char *value, size_t *len)
67 pos = os_strrchr(value, '"');
68 if (pos == NULL || pos[1] != '\0')
71 str = os_malloc(*len + 1);
74 os_memcpy(str, value, *len);
79 size_t tlen, hlen = os_strlen(value);
83 str = os_malloc(tlen + 1);
86 if (hexstr2bin(value, str, tlen)) {
97 static int wpa_config_parse_str(const struct parse_data *data,
98 struct wpa_ssid *ssid,
99 int line, const char *value)
101 size_t res_len, *dst_len;
104 if (os_strcmp(value, "NULL") == 0) {
105 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
112 tmp = wpa_config_parse_string(value, &res_len);
114 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
116 data->key_data ? "[KEY DATA REMOVED]" : value);
120 if (data->key_data) {
121 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
122 (u8 *) tmp, res_len);
124 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
125 (u8 *) tmp, res_len);
128 if (data->param3 && res_len < (size_t) data->param3) {
129 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
130 "min_len=%ld)", line, data->name,
131 (unsigned long) res_len, (long) data->param3);
136 if (data->param4 && res_len > (size_t) data->param4) {
137 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
138 "max_len=%ld)", line, data->name,
139 (unsigned long) res_len, (long) data->param4);
145 dst = (char **) (((u8 *) ssid) + (long) data->param1);
146 dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
156 #ifndef NO_CONFIG_WRITE
157 static int is_hex(const u8 *data, size_t len)
161 for (i = 0; i < len; i++) {
162 if (data[i] < 32 || data[i] >= 127)
169 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
173 buf = os_malloc(len + 3);
177 os_memcpy(buf + 1, value, len);
185 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
189 buf = os_zalloc(2 * len + 1);
192 wpa_snprintf_hex(buf, 2 * len + 1, value, len);
198 static char * wpa_config_write_string(const u8 *value, size_t len)
203 if (is_hex(value, len))
204 return wpa_config_write_string_hex(value, len);
206 return wpa_config_write_string_ascii(value, len);
210 static char * wpa_config_write_str(const struct parse_data *data,
211 struct wpa_ssid *ssid)
216 src = (char **) (((u8 *) ssid) + (long) data->param1);
221 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
223 len = os_strlen(*src);
225 return wpa_config_write_string((const u8 *) *src, len);
227 #endif /* NO_CONFIG_WRITE */
230 static int wpa_config_parse_int(const struct parse_data *data,
231 struct wpa_ssid *ssid,
232 int line, const char *value)
236 dst = (int *) (((u8 *) ssid) + (long) data->param1);
238 wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
240 if (data->param3 && *dst < (long) data->param3) {
241 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
242 "min_value=%ld)", line, data->name, *dst,
243 (long) data->param3);
244 *dst = (long) data->param3;
248 if (data->param4 && *dst > (long) data->param4) {
249 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
250 "max_value=%ld)", line, data->name, *dst,
251 (long) data->param4);
252 *dst = (long) data->param4;
260 #ifndef NO_CONFIG_WRITE
261 static char * wpa_config_write_int(const struct parse_data *data,
262 struct wpa_ssid *ssid)
267 src = (int *) (((u8 *) ssid) + (long) data->param1);
269 value = os_malloc(20);
272 res = os_snprintf(value, 20, "%d", *src);
273 if (res < 0 || res >= 20) {
277 value[20 - 1] = '\0';
280 #endif /* NO_CONFIG_WRITE */
283 static int wpa_config_parse_bssid(const struct parse_data *data,
284 struct wpa_ssid *ssid, int line,
287 if (hwaddr_aton(value, ssid->bssid)) {
288 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
293 wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
298 #ifndef NO_CONFIG_WRITE
299 static char * wpa_config_write_bssid(const struct parse_data *data,
300 struct wpa_ssid *ssid)
305 if (!ssid->bssid_set)
308 value = os_malloc(20);
311 res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
312 if (res < 0 || res >= 20) {
316 value[20 - 1] = '\0';
319 #endif /* NO_CONFIG_WRITE */
322 static int wpa_config_parse_psk(const struct parse_data *data,
323 struct wpa_ssid *ssid, int line,
327 #ifndef CONFIG_NO_PBKDF2
332 pos = os_strrchr(value, '"');
336 len = os_strlen(value);
337 if (len < 8 || len > 63) {
338 wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
339 "length %lu (expected: 8..63) '%s'.",
340 line, (unsigned long) len, value);
343 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
345 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
346 os_memcmp(ssid->passphrase, value, len) == 0)
349 os_free(ssid->passphrase);
350 ssid->passphrase = os_malloc(len + 1);
351 if (ssid->passphrase == NULL)
353 os_memcpy(ssid->passphrase, value, len);
354 ssid->passphrase[len] = '\0';
356 #else /* CONFIG_NO_PBKDF2 */
357 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
360 #endif /* CONFIG_NO_PBKDF2 */
363 if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
364 value[PMK_LEN * 2] != '\0') {
365 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
370 os_free(ssid->passphrase);
371 ssid->passphrase = NULL;
374 wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
379 #ifndef NO_CONFIG_WRITE
380 static char * wpa_config_write_psk(const struct parse_data *data,
381 struct wpa_ssid *ssid)
383 if (ssid->passphrase)
384 return wpa_config_write_string_ascii(
385 (const u8 *) ssid->passphrase,
386 os_strlen(ssid->passphrase));
389 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
393 #endif /* NO_CONFIG_WRITE */
396 static int wpa_config_parse_proto(const struct parse_data *data,
397 struct wpa_ssid *ssid, int line,
400 int val = 0, last, errors = 0;
401 char *start, *end, *buf;
403 buf = os_strdup(value);
408 while (*start != '\0') {
409 while (*start == ' ' || *start == '\t')
414 while (*end != ' ' && *end != '\t' && *end != '\0')
418 if (os_strcmp(start, "WPA") == 0)
419 val |= WPA_PROTO_WPA;
420 else if (os_strcmp(start, "RSN") == 0 ||
421 os_strcmp(start, "WPA2") == 0)
422 val |= WPA_PROTO_RSN;
424 wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
436 wpa_printf(MSG_ERROR,
437 "Line %d: no proto values configured.", line);
441 wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
443 return errors ? -1 : 0;
447 #ifndef NO_CONFIG_WRITE
448 static char * wpa_config_write_proto(const struct parse_data *data,
449 struct wpa_ssid *ssid)
452 char *buf, *pos, *end;
454 pos = buf = os_zalloc(10);
459 if (ssid->proto & WPA_PROTO_WPA) {
460 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
461 if (ret < 0 || ret >= end - pos)
467 if (ssid->proto & WPA_PROTO_RSN) {
468 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
469 if (ret < 0 || ret >= end - pos)
477 #endif /* NO_CONFIG_WRITE */
480 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
481 struct wpa_ssid *ssid, int line,
484 int val = 0, last, errors = 0;
485 char *start, *end, *buf;
487 buf = os_strdup(value);
492 while (*start != '\0') {
493 while (*start == ' ' || *start == '\t')
498 while (*end != ' ' && *end != '\t' && *end != '\0')
502 if (os_strcmp(start, "WPA-PSK") == 0)
503 val |= WPA_KEY_MGMT_PSK;
504 else if (os_strcmp(start, "WPA-EAP") == 0)
505 val |= WPA_KEY_MGMT_IEEE8021X;
506 else if (os_strcmp(start, "IEEE8021X") == 0)
507 val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
508 else if (os_strcmp(start, "NONE") == 0)
509 val |= WPA_KEY_MGMT_NONE;
510 else if (os_strcmp(start, "WPA-NONE") == 0)
511 val |= WPA_KEY_MGMT_WPA_NONE;
512 #ifdef CONFIG_IEEE80211R
513 else if (os_strcmp(start, "FT-PSK") == 0)
514 val |= WPA_KEY_MGMT_FT_PSK;
515 else if (os_strcmp(start, "FT-EAP") == 0)
516 val |= WPA_KEY_MGMT_FT_IEEE8021X;
517 #endif /* CONFIG_IEEE80211R */
518 #ifdef CONFIG_IEEE80211W
519 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
520 val |= WPA_KEY_MGMT_PSK_SHA256;
521 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
522 val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
523 #endif /* CONFIG_IEEE80211W */
525 else if (os_strcmp(start, "WPS") == 0)
526 val |= WPA_KEY_MGMT_WPS;
527 #endif /* CONFIG_WPS */
529 wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
541 wpa_printf(MSG_ERROR,
542 "Line %d: no key_mgmt values configured.", line);
546 wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
547 ssid->key_mgmt = val;
548 return errors ? -1 : 0;
552 #ifndef NO_CONFIG_WRITE
553 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
554 struct wpa_ssid *ssid)
556 char *buf, *pos, *end;
559 pos = buf = os_zalloc(50);
564 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
565 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
566 pos == buf ? "" : " ");
567 if (ret < 0 || ret >= end - pos) {
574 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
575 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
576 pos == buf ? "" : " ");
577 if (ret < 0 || ret >= end - pos) {
584 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
585 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
586 pos == buf ? "" : " ");
587 if (ret < 0 || ret >= end - pos) {
594 if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
595 ret = os_snprintf(pos, end - pos, "%sNONE",
596 pos == buf ? "" : " ");
597 if (ret < 0 || ret >= end - pos) {
604 if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
605 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
606 pos == buf ? "" : " ");
607 if (ret < 0 || ret >= end - pos) {
614 #ifdef CONFIG_IEEE80211R
615 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK)
616 pos += os_snprintf(pos, end - pos, "%sFT-PSK",
617 pos == buf ? "" : " ");
619 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
620 pos += os_snprintf(pos, end - pos, "%sFT-EAP",
621 pos == buf ? "" : " ");
622 #endif /* CONFIG_IEEE80211R */
624 #ifdef CONFIG_IEEE80211W
625 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
626 pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
627 pos == buf ? "" : " ");
629 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
630 pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
631 pos == buf ? "" : " ");
632 #endif /* CONFIG_IEEE80211W */
635 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
636 pos += os_snprintf(pos, end - pos, "%sWPS",
637 pos == buf ? "" : " ");
638 #endif /* CONFIG_WPS */
642 #endif /* NO_CONFIG_WRITE */
645 static int wpa_config_parse_cipher(int line, const char *value)
648 char *start, *end, *buf;
650 buf = os_strdup(value);
655 while (*start != '\0') {
656 while (*start == ' ' || *start == '\t')
661 while (*end != ' ' && *end != '\t' && *end != '\0')
665 if (os_strcmp(start, "CCMP") == 0)
666 val |= WPA_CIPHER_CCMP;
667 else if (os_strcmp(start, "TKIP") == 0)
668 val |= WPA_CIPHER_TKIP;
669 else if (os_strcmp(start, "WEP104") == 0)
670 val |= WPA_CIPHER_WEP104;
671 else if (os_strcmp(start, "WEP40") == 0)
672 val |= WPA_CIPHER_WEP40;
673 else if (os_strcmp(start, "NONE") == 0)
674 val |= WPA_CIPHER_NONE;
676 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
689 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
697 #ifndef NO_CONFIG_WRITE
698 static char * wpa_config_write_cipher(int cipher)
700 char *buf, *pos, *end;
703 pos = buf = os_zalloc(50);
708 if (cipher & WPA_CIPHER_CCMP) {
709 ret = os_snprintf(pos, end - pos, "%sCCMP",
710 pos == buf ? "" : " ");
711 if (ret < 0 || ret >= end - pos) {
718 if (cipher & WPA_CIPHER_TKIP) {
719 ret = os_snprintf(pos, end - pos, "%sTKIP",
720 pos == buf ? "" : " ");
721 if (ret < 0 || ret >= end - pos) {
728 if (cipher & WPA_CIPHER_WEP104) {
729 ret = os_snprintf(pos, end - pos, "%sWEP104",
730 pos == buf ? "" : " ");
731 if (ret < 0 || ret >= end - pos) {
738 if (cipher & WPA_CIPHER_WEP40) {
739 ret = os_snprintf(pos, end - pos, "%sWEP40",
740 pos == buf ? "" : " ");
741 if (ret < 0 || ret >= end - pos) {
748 if (cipher & WPA_CIPHER_NONE) {
749 ret = os_snprintf(pos, end - pos, "%sNONE",
750 pos == buf ? "" : " ");
751 if (ret < 0 || ret >= end - pos) {
760 #endif /* NO_CONFIG_WRITE */
763 static int wpa_config_parse_pairwise(const struct parse_data *data,
764 struct wpa_ssid *ssid, int line,
768 val = wpa_config_parse_cipher(line, value);
771 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_NONE)) {
772 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
773 "(0x%x).", line, val);
777 wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
778 ssid->pairwise_cipher = val;
783 #ifndef NO_CONFIG_WRITE
784 static char * wpa_config_write_pairwise(const struct parse_data *data,
785 struct wpa_ssid *ssid)
787 return wpa_config_write_cipher(ssid->pairwise_cipher);
789 #endif /* NO_CONFIG_WRITE */
792 static int wpa_config_parse_group(const struct parse_data *data,
793 struct wpa_ssid *ssid, int line,
797 val = wpa_config_parse_cipher(line, value);
800 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_WEP104 |
802 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
803 "(0x%x).", line, val);
807 wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
808 ssid->group_cipher = val;
813 #ifndef NO_CONFIG_WRITE
814 static char * wpa_config_write_group(const struct parse_data *data,
815 struct wpa_ssid *ssid)
817 return wpa_config_write_cipher(ssid->group_cipher);
819 #endif /* NO_CONFIG_WRITE */
822 static int wpa_config_parse_auth_alg(const struct parse_data *data,
823 struct wpa_ssid *ssid, int line,
826 int val = 0, last, errors = 0;
827 char *start, *end, *buf;
829 buf = os_strdup(value);
834 while (*start != '\0') {
835 while (*start == ' ' || *start == '\t')
840 while (*end != ' ' && *end != '\t' && *end != '\0')
844 if (os_strcmp(start, "OPEN") == 0)
845 val |= WPA_AUTH_ALG_OPEN;
846 else if (os_strcmp(start, "SHARED") == 0)
847 val |= WPA_AUTH_ALG_SHARED;
848 else if (os_strcmp(start, "LEAP") == 0)
849 val |= WPA_AUTH_ALG_LEAP;
851 wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
863 wpa_printf(MSG_ERROR,
864 "Line %d: no auth_alg values configured.", line);
868 wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
869 ssid->auth_alg = val;
870 return errors ? -1 : 0;
874 #ifndef NO_CONFIG_WRITE
875 static char * wpa_config_write_auth_alg(const struct parse_data *data,
876 struct wpa_ssid *ssid)
878 char *buf, *pos, *end;
881 pos = buf = os_zalloc(30);
886 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
887 ret = os_snprintf(pos, end - pos, "%sOPEN",
888 pos == buf ? "" : " ");
889 if (ret < 0 || ret >= end - pos) {
896 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
897 ret = os_snprintf(pos, end - pos, "%sSHARED",
898 pos == buf ? "" : " ");
899 if (ret < 0 || ret >= end - pos) {
906 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
907 ret = os_snprintf(pos, end - pos, "%sLEAP",
908 pos == buf ? "" : " ");
909 if (ret < 0 || ret >= end - pos) {
918 #endif /* NO_CONFIG_WRITE */
921 static int * wpa_config_parse_freqs(const struct parse_data *data,
922 struct wpa_ssid *ssid, int line,
931 freqs = os_zalloc((len + 1) * sizeof(int));
942 n = os_realloc(freqs, (len * 2 + 1) * sizeof(int));
947 for (i = len; i <= len * 2; i++)
953 freqs[used] = atoi(pos);
954 if (freqs[used] == 0)
957 pos = os_strchr(pos + 1, ' ');
964 static int wpa_config_parse_scan_freq(const struct parse_data *data,
965 struct wpa_ssid *ssid, int line,
970 freqs = wpa_config_parse_freqs(data, ssid, line, value);
973 os_free(ssid->scan_freq);
974 ssid->scan_freq = freqs;
980 static int wpa_config_parse_freq_list(const struct parse_data *data,
981 struct wpa_ssid *ssid, int line,
986 freqs = wpa_config_parse_freqs(data, ssid, line, value);
989 os_free(ssid->freq_list);
990 ssid->freq_list = freqs;
996 #ifndef NO_CONFIG_WRITE
997 static char * wpa_config_write_freqs(const struct parse_data *data,
1000 char *buf, *pos, *end;
1008 for (i = 0; freqs[i]; i++)
1011 pos = buf = os_zalloc(10 * count + 1);
1014 end = buf + 10 * count + 1;
1016 for (i = 0; freqs[i]; i++) {
1017 ret = os_snprintf(pos, end - pos, "%s%u",
1018 i == 0 ? "" : " ", freqs[i]);
1019 if (ret < 0 || ret >= end - pos) {
1030 static char * wpa_config_write_scan_freq(const struct parse_data *data,
1031 struct wpa_ssid *ssid)
1033 return wpa_config_write_freqs(data, ssid->scan_freq);
1037 static char * wpa_config_write_freq_list(const struct parse_data *data,
1038 struct wpa_ssid *ssid)
1040 return wpa_config_write_freqs(data, ssid->freq_list);
1042 #endif /* NO_CONFIG_WRITE */
1045 #ifdef IEEE8021X_EAPOL
1046 static int wpa_config_parse_eap(const struct parse_data *data,
1047 struct wpa_ssid *ssid, int line,
1050 int last, errors = 0;
1051 char *start, *end, *buf;
1052 struct eap_method_type *methods = NULL, *tmp;
1053 size_t num_methods = 0;
1055 buf = os_strdup(value);
1060 while (*start != '\0') {
1061 while (*start == ' ' || *start == '\t')
1066 while (*end != ' ' && *end != '\t' && *end != '\0')
1068 last = *end == '\0';
1071 methods = os_realloc(methods,
1072 (num_methods + 1) * sizeof(*methods));
1073 if (methods == NULL) {
1078 methods[num_methods].method = eap_peer_get_type(
1079 start, &methods[num_methods].vendor);
1080 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1081 methods[num_methods].method == EAP_TYPE_NONE) {
1082 wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1083 "'%s'", line, start);
1084 wpa_printf(MSG_ERROR, "You may need to add support for"
1085 " this EAP method during wpa_supplicant\n"
1086 "build time configuration.\n"
1087 "See README for more information.");
1089 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1090 methods[num_methods].method == EAP_TYPE_LEAP)
1102 methods = os_realloc(methods, (num_methods + 1) * sizeof(*methods));
1103 if (methods == NULL) {
1107 methods[num_methods].vendor = EAP_VENDOR_IETF;
1108 methods[num_methods].method = EAP_TYPE_NONE;
1111 wpa_hexdump(MSG_MSGDUMP, "eap methods",
1112 (u8 *) methods, num_methods * sizeof(*methods));
1113 ssid->eap.eap_methods = methods;
1114 return errors ? -1 : 0;
1118 static char * wpa_config_write_eap(const struct parse_data *data,
1119 struct wpa_ssid *ssid)
1122 char *buf, *pos, *end;
1123 const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1126 if (eap_methods == NULL)
1129 pos = buf = os_zalloc(100);
1134 for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1135 eap_methods[i].method != EAP_TYPE_NONE; i++) {
1136 name = eap_get_name(eap_methods[i].vendor,
1137 eap_methods[i].method);
1139 ret = os_snprintf(pos, end - pos, "%s%s",
1140 pos == buf ? "" : " ", name);
1141 if (ret < 0 || ret >= end - pos)
1153 static int wpa_config_parse_password(const struct parse_data *data,
1154 struct wpa_ssid *ssid, int line,
1159 if (os_strcmp(value, "NULL") == 0) {
1160 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1161 os_free(ssid->eap.password);
1162 ssid->eap.password = NULL;
1163 ssid->eap.password_len = 0;
1167 if (os_strncmp(value, "hash:", 5) != 0) {
1171 tmp = wpa_config_parse_string(value, &res_len);
1173 wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1177 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1178 (u8 *) tmp, res_len);
1180 os_free(ssid->eap.password);
1181 ssid->eap.password = (u8 *) tmp;
1182 ssid->eap.password_len = res_len;
1183 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1189 /* NtPasswordHash: hash:<32 hex digits> */
1190 if (os_strlen(value + 5) != 2 * 16) {
1191 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1192 "(expected 32 hex digits)", line);
1196 hash = os_malloc(16);
1200 if (hexstr2bin(value + 5, hash, 16)) {
1202 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1206 wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1208 os_free(ssid->eap.password);
1209 ssid->eap.password = hash;
1210 ssid->eap.password_len = 16;
1211 ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1217 static char * wpa_config_write_password(const struct parse_data *data,
1218 struct wpa_ssid *ssid)
1222 if (ssid->eap.password == NULL)
1225 if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1226 return wpa_config_write_string(
1227 ssid->eap.password, ssid->eap.password_len);
1230 buf = os_malloc(5 + 32 + 1);
1234 os_memcpy(buf, "hash:", 5);
1235 wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1239 #endif /* IEEE8021X_EAPOL */
1242 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1243 const char *value, int idx)
1245 char *buf, title[20];
1248 buf = wpa_config_parse_string(value, len);
1250 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1254 if (*len > MAX_WEP_KEY_LEN) {
1255 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1260 os_memcpy(key, buf, *len);
1262 res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1263 if (res >= 0 && (size_t) res < sizeof(title))
1264 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1269 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1270 struct wpa_ssid *ssid, int line,
1273 return wpa_config_parse_wep_key(ssid->wep_key[0],
1274 &ssid->wep_key_len[0], line,
1279 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1280 struct wpa_ssid *ssid, int line,
1283 return wpa_config_parse_wep_key(ssid->wep_key[1],
1284 &ssid->wep_key_len[1], line,
1289 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1290 struct wpa_ssid *ssid, int line,
1293 return wpa_config_parse_wep_key(ssid->wep_key[2],
1294 &ssid->wep_key_len[2], line,
1299 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1300 struct wpa_ssid *ssid, int line,
1303 return wpa_config_parse_wep_key(ssid->wep_key[3],
1304 &ssid->wep_key_len[3], line,
1309 #ifndef NO_CONFIG_WRITE
1310 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1312 if (ssid->wep_key_len[idx] == 0)
1314 return wpa_config_write_string(ssid->wep_key[idx],
1315 ssid->wep_key_len[idx]);
1319 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1320 struct wpa_ssid *ssid)
1322 return wpa_config_write_wep_key(ssid, 0);
1326 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1327 struct wpa_ssid *ssid)
1329 return wpa_config_write_wep_key(ssid, 1);
1333 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1334 struct wpa_ssid *ssid)
1336 return wpa_config_write_wep_key(ssid, 2);
1340 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1341 struct wpa_ssid *ssid)
1343 return wpa_config_write_wep_key(ssid, 3);
1345 #endif /* NO_CONFIG_WRITE */
1348 /* Helper macros for network block parser */
1353 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1354 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1356 /* STR: Define a string variable for an ASCII string; f = field name */
1357 #ifdef NO_CONFIG_WRITE
1358 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1359 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1360 #else /* NO_CONFIG_WRITE */
1361 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1362 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1363 #endif /* NO_CONFIG_WRITE */
1364 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1365 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1366 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1367 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1369 /* STR_LEN: Define a string variable with a separate variable for storing the
1370 * data length. Unlike STR(), this can be used to store arbitrary binary data
1371 * (i.e., even nul termination character). */
1372 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1373 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1374 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1375 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1376 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1378 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1379 * explicitly specified. */
1380 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1381 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1382 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1384 #ifdef NO_CONFIG_WRITE
1385 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1386 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1387 #else /* NO_CONFIG_WRITE */
1388 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1389 OFFSET(f), (void *) 0
1390 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1391 OFFSET(eap.f), (void *) 0
1392 #endif /* NO_CONFIG_WRITE */
1394 /* INT: Define an integer variable */
1395 #define INT(f) _INT(f), NULL, NULL, 0
1396 #define INTe(f) _INTe(f), NULL, NULL, 0
1398 /* INT_RANGE: Define an integer variable with allowed value range */
1399 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1401 /* FUNC: Define a configuration variable that uses a custom function for
1402 * parsing and writing the value. */
1403 #ifdef NO_CONFIG_WRITE
1404 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1405 #else /* NO_CONFIG_WRITE */
1406 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1407 NULL, NULL, NULL, NULL
1408 #endif /* NO_CONFIG_WRITE */
1409 #define FUNC(f) _FUNC(f), 0
1410 #define FUNC_KEY(f) _FUNC(f), 1
1413 * Table of network configuration variables. This table is used to parse each
1414 * network configuration variable, e.g., each line in wpa_supplicant.conf file
1415 * that is inside a network block.
1417 * This table is generated using the helper macros defined above and with
1418 * generous help from the C pre-processor. The field name is stored as a string
1419 * into .name and for STR and INT types, the offset of the target buffer within
1420 * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1421 * offset to the field containing the length of the configuration variable.
1422 * .param3 and .param4 can be used to mark the allowed range (length for STR
1423 * and value for INT).
1425 * For each configuration line in wpa_supplicant.conf, the parser goes through
1426 * this table and select the entry that matches with the field name. The parser
1427 * function (.parser) is then called to parse the actual value of the field.
1429 * This kind of mechanism makes it easy to add new configuration parameters,
1430 * since only one line needs to be added into this table and into the
1431 * struct wpa_ssid definition if the new variable is either a string or
1432 * integer. More complex types will need to use their own parser and writer
1435 static const struct parse_data ssid_fields[] = {
1436 { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1437 { INT_RANGE(scan_ssid, 0, 1) },
1445 { FUNC(scan_freq) },
1446 { FUNC(freq_list) },
1447 #ifdef IEEE8021X_EAPOL
1449 { STR_LENe(identity) },
1450 { STR_LENe(anonymous_identity) },
1451 { FUNC_KEY(password) },
1454 { STRe(client_cert) },
1455 { STRe(private_key) },
1456 { STR_KEYe(private_key_passwd) },
1458 { STRe(subject_match) },
1459 { STRe(altsubject_match) },
1462 { STRe(client_cert2) },
1463 { STRe(private_key2) },
1464 { STR_KEYe(private_key2_passwd) },
1466 { STRe(subject_match2) },
1467 { STRe(altsubject_match2) },
1472 { STRe(engine_id) },
1475 { STRe(ca_cert_id) },
1477 { STRe(engine2_id) },
1480 { STRe(ca_cert2_id) },
1483 { INT(eapol_flags) },
1484 #endif /* IEEE8021X_EAPOL */
1485 { FUNC_KEY(wep_key0) },
1486 { FUNC_KEY(wep_key1) },
1487 { FUNC_KEY(wep_key2) },
1488 { FUNC_KEY(wep_key3) },
1489 { INT(wep_tx_keyidx) },
1491 #ifdef IEEE8021X_EAPOL
1492 { INT(eap_workaround) },
1494 { INTe(fragment_size) },
1495 #endif /* IEEE8021X_EAPOL */
1496 { INT_RANGE(mode, 0, 4) },
1497 { INT_RANGE(proactive_key_caching, 0, 1) },
1498 { INT_RANGE(disabled, 0, 2) },
1500 #ifdef CONFIG_IEEE80211W
1501 { INT_RANGE(ieee80211w, 0, 2) },
1502 #endif /* CONFIG_IEEE80211W */
1503 { INT_RANGE(peerkey, 0, 1) },
1504 { INT_RANGE(mixed_cell, 0, 1) },
1505 { INT_RANGE(frequency, 0, 10000) },
1506 { INT(wpa_ptk_rekey) },
1519 #undef STR_RANGE_KEY
1526 #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0]))
1530 * wpa_config_add_prio_network - Add a network to priority lists
1531 * @config: Configuration data from wpa_config_read()
1532 * @ssid: Pointer to the network configuration to be added to the list
1533 * Returns: 0 on success, -1 on failure
1535 * This function is used to add a network block to the priority list of
1536 * networks. This must be called for each network when reading in the full
1537 * configuration. In addition, this can be used indirectly when updating
1538 * priorities by calling wpa_config_update_prio_list().
1540 int wpa_config_add_prio_network(struct wpa_config *config,
1541 struct wpa_ssid *ssid)
1544 struct wpa_ssid *prev, **nlist;
1547 * Add to an existing priority list if one is available for the
1548 * configured priority level for this network.
1550 for (prio = 0; prio < config->num_prio; prio++) {
1551 prev = config->pssid[prio];
1552 if (prev->priority == ssid->priority) {
1560 /* First network for this priority - add a new priority list */
1561 nlist = os_realloc(config->pssid,
1562 (config->num_prio + 1) * sizeof(struct wpa_ssid *));
1566 for (prio = 0; prio < config->num_prio; prio++) {
1567 if (nlist[prio]->priority < ssid->priority)
1571 os_memmove(&nlist[prio + 1], &nlist[prio],
1572 (config->num_prio - prio) * sizeof(struct wpa_ssid *));
1576 config->pssid = nlist;
1583 * wpa_config_update_prio_list - Update network priority list
1584 * @config: Configuration data from wpa_config_read()
1585 * Returns: 0 on success, -1 on failure
1587 * This function is called to update the priority list of networks in the
1588 * configuration when a network is being added or removed. This is also called
1589 * if a priority for a network is changed.
1591 int wpa_config_update_prio_list(struct wpa_config *config)
1593 struct wpa_ssid *ssid;
1596 os_free(config->pssid);
1597 config->pssid = NULL;
1598 config->num_prio = 0;
1600 ssid = config->ssid;
1603 if (wpa_config_add_prio_network(config, ssid) < 0)
1612 #ifdef IEEE8021X_EAPOL
1613 static void eap_peer_config_free(struct eap_peer_config *eap)
1615 os_free(eap->eap_methods);
1616 os_free(eap->identity);
1617 os_free(eap->anonymous_identity);
1618 os_free(eap->password);
1619 os_free(eap->ca_cert);
1620 os_free(eap->ca_path);
1621 os_free(eap->client_cert);
1622 os_free(eap->private_key);
1623 os_free(eap->private_key_passwd);
1624 os_free(eap->dh_file);
1625 os_free(eap->subject_match);
1626 os_free(eap->altsubject_match);
1627 os_free(eap->ca_cert2);
1628 os_free(eap->ca_path2);
1629 os_free(eap->client_cert2);
1630 os_free(eap->private_key2);
1631 os_free(eap->private_key2_passwd);
1632 os_free(eap->dh_file2);
1633 os_free(eap->subject_match2);
1634 os_free(eap->altsubject_match2);
1635 os_free(eap->phase1);
1636 os_free(eap->phase2);
1639 os_free(eap->engine_id);
1640 os_free(eap->key_id);
1641 os_free(eap->cert_id);
1642 os_free(eap->ca_cert_id);
1643 os_free(eap->key2_id);
1644 os_free(eap->cert2_id);
1645 os_free(eap->ca_cert2_id);
1647 os_free(eap->engine2_id);
1649 os_free(eap->pending_req_otp);
1650 os_free(eap->pac_file);
1651 os_free(eap->new_password);
1653 #endif /* IEEE8021X_EAPOL */
1657 * wpa_config_free_ssid - Free network/ssid configuration data
1658 * @ssid: Configuration data for the network
1660 * This function frees all resources allocated for the network configuration
1663 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1665 os_free(ssid->ssid);
1666 os_free(ssid->passphrase);
1667 #ifdef IEEE8021X_EAPOL
1668 eap_peer_config_free(&ssid->eap);
1669 #endif /* IEEE8021X_EAPOL */
1670 os_free(ssid->id_str);
1671 os_free(ssid->scan_freq);
1672 os_free(ssid->freq_list);
1673 os_free(ssid->bgscan);
1679 * wpa_config_free - Free configuration data
1680 * @config: Configuration data from wpa_config_read()
1682 * This function frees all resources allocated for the configuration data by
1683 * wpa_config_read().
1685 void wpa_config_free(struct wpa_config *config)
1687 #ifndef CONFIG_NO_CONFIG_BLOBS
1688 struct wpa_config_blob *blob, *prevblob;
1689 #endif /* CONFIG_NO_CONFIG_BLOBS */
1690 struct wpa_ssid *ssid, *prev = NULL;
1693 ssid = config->ssid;
1697 wpa_config_free_ssid(prev);
1700 #ifndef CONFIG_NO_CONFIG_BLOBS
1701 blob = config->blobs;
1706 wpa_config_free_blob(prevblob);
1708 #endif /* CONFIG_NO_CONFIG_BLOBS */
1710 os_free(config->ctrl_interface);
1711 os_free(config->ctrl_interface_group);
1712 os_free(config->opensc_engine_path);
1713 os_free(config->pkcs11_engine_path);
1714 os_free(config->pkcs11_module_path);
1715 os_free(config->driver_param);
1716 os_free(config->device_name);
1717 os_free(config->manufacturer);
1718 os_free(config->model_name);
1719 os_free(config->model_number);
1720 os_free(config->serial_number);
1721 os_free(config->device_type);
1722 for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++)
1723 os_free(config->sec_device_type[i]);
1724 os_free(config->config_methods);
1725 os_free(config->p2p_ssid_postfix);
1726 os_free(config->pssid);
1732 * wpa_config_get_network - Get configured network based on id
1733 * @config: Configuration data from wpa_config_read()
1734 * @id: Unique network id to search for
1735 * Returns: Network configuration or %NULL if not found
1737 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
1739 struct wpa_ssid *ssid;
1741 ssid = config->ssid;
1753 * wpa_config_add_network - Add a new network with empty configuration
1754 * @config: Configuration data from wpa_config_read()
1755 * Returns: The new network configuration or %NULL if operation failed
1757 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
1760 struct wpa_ssid *ssid, *last = NULL;
1763 ssid = config->ssid;
1772 ssid = os_zalloc(sizeof(*ssid));
1779 config->ssid = ssid;
1781 wpa_config_update_prio_list(config);
1788 * wpa_config_remove_network - Remove a configured network based on id
1789 * @config: Configuration data from wpa_config_read()
1790 * @id: Unique network id to search for
1791 * Returns: 0 on success, or -1 if the network was not found
1793 int wpa_config_remove_network(struct wpa_config *config, int id)
1795 struct wpa_ssid *ssid, *prev = NULL;
1797 ssid = config->ssid;
1809 prev->next = ssid->next;
1811 config->ssid = ssid->next;
1813 wpa_config_update_prio_list(config);
1814 wpa_config_free_ssid(ssid);
1820 * wpa_config_set_network_defaults - Set network default values
1821 * @ssid: Pointer to network configuration data
1823 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
1825 ssid->proto = DEFAULT_PROTO;
1826 ssid->pairwise_cipher = DEFAULT_PAIRWISE;
1827 ssid->group_cipher = DEFAULT_GROUP;
1828 ssid->key_mgmt = DEFAULT_KEY_MGMT;
1829 #ifdef IEEE8021X_EAPOL
1830 ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
1831 ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
1832 ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
1833 #endif /* IEEE8021X_EAPOL */
1838 * wpa_config_set - Set a variable in network configuration
1839 * @ssid: Pointer to network configuration data
1840 * @var: Variable name, e.g., "ssid"
1841 * @value: Variable value
1842 * @line: Line number in configuration file or 0 if not used
1843 * Returns: 0 on success, -1 on failure
1845 * This function can be used to set network configuration variables based on
1846 * both the configuration file and management interface input. The value
1847 * parameter must be in the same format as the text-based configuration file is
1848 * using. For example, strings are using double quotation marks.
1850 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
1856 if (ssid == NULL || var == NULL || value == NULL)
1859 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1860 const struct parse_data *field = &ssid_fields[i];
1861 if (os_strcmp(var, field->name) != 0)
1864 if (field->parser(field, ssid, line, value)) {
1866 wpa_printf(MSG_ERROR, "Line %d: failed to "
1867 "parse %s '%s'.", line, var, value);
1873 if (i == NUM_SSID_FIELDS) {
1875 wpa_printf(MSG_ERROR, "Line %d: unknown network field "
1876 "'%s'.", line, var);
1886 * wpa_config_get_all - Get all options from network configuration
1887 * @ssid: Pointer to network configuration data
1888 * @get_keys: Determines if keys/passwords will be included in returned list
1889 * Returns: %NULL terminated list of all set keys and their values in the form
1890 * of [key1, val1, key2, val2, ... , NULL]
1892 * This function can be used to get list of all configured network properties.
1893 * The caller is responsible for freeing the returned list and all its
1896 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
1898 const struct parse_data *field;
1904 props = os_zalloc(sizeof(char *) * ((2 * NUM_SSID_FIELDS) + 1));
1909 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1910 field = &ssid_fields[i];
1911 if (field->key_data && !get_keys)
1913 value = field->writer(field, ssid);
1916 if (os_strlen(value) == 0) {
1921 key = os_strdup(field->name);
1927 props[fields_num * 2] = key;
1928 props[fields_num * 2 + 1] = value;
1944 #ifndef NO_CONFIG_WRITE
1946 * wpa_config_get - Get a variable in network configuration
1947 * @ssid: Pointer to network configuration data
1948 * @var: Variable name, e.g., "ssid"
1949 * Returns: Value of the variable or %NULL on failure
1951 * This function can be used to get network configuration variables. The
1952 * returned value is a copy of the configuration variable in text format, i.e,.
1953 * the same format that the text-based configuration file and wpa_config_set()
1954 * are using for the value. The caller is responsible for freeing the returned
1957 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
1961 if (ssid == NULL || var == NULL)
1964 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1965 const struct parse_data *field = &ssid_fields[i];
1966 if (os_strcmp(var, field->name) == 0)
1967 return field->writer(field, ssid);
1975 * wpa_config_get_no_key - Get a variable in network configuration (no keys)
1976 * @ssid: Pointer to network configuration data
1977 * @var: Variable name, e.g., "ssid"
1978 * Returns: Value of the variable or %NULL on failure
1980 * This function can be used to get network configuration variable like
1981 * wpa_config_get(). The only difference is that this functions does not expose
1982 * key/password material from the configuration. In case a key/password field
1983 * is requested, the returned value is an empty string or %NULL if the variable
1984 * is not set or "*" if the variable is set (regardless of its value). The
1985 * returned value is a copy of the configuration variable in text format, i.e,.
1986 * the same format that the text-based configuration file and wpa_config_set()
1987 * are using for the value. The caller is responsible for freeing the returned
1990 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
1994 if (ssid == NULL || var == NULL)
1997 for (i = 0; i < NUM_SSID_FIELDS; i++) {
1998 const struct parse_data *field = &ssid_fields[i];
1999 if (os_strcmp(var, field->name) == 0) {
2000 char *res = field->writer(field, ssid);
2001 if (field->key_data) {
2002 if (res && res[0]) {
2003 wpa_printf(MSG_DEBUG, "Do not allow "
2004 "key_data field to be "
2007 return os_strdup("*");
2019 #endif /* NO_CONFIG_WRITE */
2023 * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2024 * @ssid: Pointer to network configuration data
2026 * This function must be called to update WPA PSK when either SSID or the
2027 * passphrase has changed for the network configuration.
2029 void wpa_config_update_psk(struct wpa_ssid *ssid)
2031 #ifndef CONFIG_NO_PBKDF2
2032 pbkdf2_sha1(ssid->passphrase,
2033 (char *) ssid->ssid, ssid->ssid_len, 4096,
2034 ssid->psk, PMK_LEN);
2035 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2036 ssid->psk, PMK_LEN);
2038 #endif /* CONFIG_NO_PBKDF2 */
2042 #ifndef CONFIG_NO_CONFIG_BLOBS
2044 * wpa_config_get_blob - Get a named configuration blob
2045 * @config: Configuration data from wpa_config_read()
2046 * @name: Name of the blob
2047 * Returns: Pointer to blob data or %NULL if not found
2049 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
2052 struct wpa_config_blob *blob = config->blobs;
2055 if (os_strcmp(blob->name, name) == 0)
2064 * wpa_config_set_blob - Set or add a named configuration blob
2065 * @config: Configuration data from wpa_config_read()
2066 * @blob: New value for the blob
2068 * Adds a new configuration blob or replaces the current value of an existing
2071 void wpa_config_set_blob(struct wpa_config *config,
2072 struct wpa_config_blob *blob)
2074 wpa_config_remove_blob(config, blob->name);
2075 blob->next = config->blobs;
2076 config->blobs = blob;
2081 * wpa_config_free_blob - Free blob data
2082 * @blob: Pointer to blob to be freed
2084 void wpa_config_free_blob(struct wpa_config_blob *blob)
2087 os_free(blob->name);
2088 os_free(blob->data);
2095 * wpa_config_remove_blob - Remove a named configuration blob
2096 * @config: Configuration data from wpa_config_read()
2097 * @name: Name of the blob to remove
2098 * Returns: 0 if blob was removed or -1 if blob was not found
2100 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
2102 struct wpa_config_blob *pos = config->blobs, *prev = NULL;
2105 if (os_strcmp(pos->name, name) == 0) {
2107 prev->next = pos->next;
2109 config->blobs = pos->next;
2110 wpa_config_free_blob(pos);
2119 #endif /* CONFIG_NO_CONFIG_BLOBS */
2123 * wpa_config_alloc_empty - Allocate an empty configuration
2124 * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
2126 * @driver_param: Driver parameters
2127 * Returns: Pointer to allocated configuration data or %NULL on failure
2129 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
2130 const char *driver_param)
2132 struct wpa_config *config;
2134 config = os_zalloc(sizeof(*config));
2137 config->eapol_version = DEFAULT_EAPOL_VERSION;
2138 config->ap_scan = DEFAULT_AP_SCAN;
2139 config->fast_reauth = DEFAULT_FAST_REAUTH;
2140 config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
2141 config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
2144 config->ctrl_interface = os_strdup(ctrl_interface);
2146 config->driver_param = os_strdup(driver_param);
2152 #ifndef CONFIG_NO_STDOUT_DEBUG
2154 * wpa_config_debug_dump_networks - Debug dump of configured networks
2155 * @config: Configuration data from wpa_config_read()
2157 void wpa_config_debug_dump_networks(struct wpa_config *config)
2160 struct wpa_ssid *ssid;
2162 for (prio = 0; prio < config->num_prio; prio++) {
2163 ssid = config->pssid[prio];
2164 wpa_printf(MSG_DEBUG, "Priority group %d",
2167 wpa_printf(MSG_DEBUG, " id=%d ssid='%s'",
2169 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2174 #endif /* CONFIG_NO_STDOUT_DEBUG */
2177 struct global_parse_data {
2179 int (*parser)(const struct global_parse_data *data,
2180 struct wpa_config *config, int line, const char *value);
2181 void *param1, *param2, *param3;
2182 unsigned int changed_flag;
2186 static int wpa_global_config_parse_int(const struct global_parse_data *data,
2187 struct wpa_config *config, int line,
2191 dst = (int *) (((u8 *) config) + (long) data->param1);
2193 wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
2195 if (data->param2 && *dst < (long) data->param2) {
2196 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
2197 "min_value=%ld)", line, data->name, *dst,
2198 (long) data->param2);
2199 *dst = (long) data->param2;
2203 if (data->param3 && *dst > (long) data->param3) {
2204 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
2205 "max_value=%ld)", line, data->name, *dst,
2206 (long) data->param3);
2207 *dst = (long) data->param3;
2215 static int wpa_global_config_parse_str(const struct global_parse_data *data,
2216 struct wpa_config *config, int line,
2222 len = os_strlen(pos);
2223 if (data->param2 && len < (size_t) data->param2) {
2224 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
2225 "min_len=%ld)", line, data->name,
2226 (unsigned long) len, (long) data->param2);
2230 if (data->param3 && len > (size_t) data->param3) {
2231 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
2232 "max_len=%ld)", line, data->name,
2233 (unsigned long) len, (long) data->param3);
2237 tmp = os_strdup(pos);
2241 dst = (char **) (((u8 *) config) + (long) data->param1);
2244 wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
2250 static int wpa_config_process_country(const struct global_parse_data *data,
2251 struct wpa_config *config, int line,
2254 if (!pos[0] || !pos[1]) {
2255 wpa_printf(MSG_DEBUG, "Invalid country set");
2258 config->country[0] = pos[0];
2259 config->country[1] = pos[1];
2260 wpa_printf(MSG_DEBUG, "country='%c%c'",
2261 config->country[0], config->country[1]);
2266 static int wpa_config_process_load_dynamic_eap(
2267 const struct global_parse_data *data, struct wpa_config *config,
2268 int line, const char *so)
2271 wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
2272 ret = eap_peer_method_load(so);
2274 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
2277 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
2278 "method '%s'.", line, so);
2288 static int wpa_config_process_uuid(const struct global_parse_data *data,
2289 struct wpa_config *config, int line,
2293 if (uuid_str2bin(pos, config->uuid)) {
2294 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
2297 uuid_bin2str(config->uuid, buf, sizeof(buf));
2298 wpa_printf(MSG_DEBUG, "uuid=%s", buf);
2303 static int wpa_config_process_os_version(const struct global_parse_data *data,
2304 struct wpa_config *config, int line,
2307 if (hexstr2bin(pos, config->os_version, 4)) {
2308 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
2311 wpa_printf(MSG_DEBUG, "os_version=%08x",
2312 WPA_GET_BE32(config->os_version));
2316 #endif /* CONFIG_WPS */
2319 static int wpa_config_process_sec_device_type(
2320 const struct global_parse_data *data,
2321 struct wpa_config *config, int line, const char *pos)
2325 for (idx = 0; idx < MAX_SEC_DEVICE_TYPES; idx++)
2326 if (config->sec_device_type[idx] == NULL)
2328 if (idx == MAX_SEC_DEVICE_TYPES) {
2329 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
2334 config->sec_device_type[idx] = os_strdup(pos);
2335 if (config->sec_device_type[idx] == NULL)
2339 #endif /* CONFIG_P2P */
2345 /* OFFSET: Get offset of a variable within the wpa_config structure */
2346 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
2348 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
2349 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
2350 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
2351 #define INT(f) _INT(f), NULL, NULL
2352 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
2353 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
2354 #define STR(f) _STR(f), NULL, NULL
2355 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
2357 static const struct global_parse_data global_fields[] = {
2358 #ifdef CONFIG_CTRL_IFACE
2359 { STR(ctrl_interface), 0 },
2360 { STR(ctrl_interface_group), 0 } /* deprecated */,
2361 #endif /* CONFIG_CTRL_IFACE */
2362 { INT_RANGE(eapol_version, 1, 2), 0 },
2363 { INT(ap_scan), 0 },
2364 { INT(fast_reauth), 0 },
2365 { STR(opensc_engine_path), 0 },
2366 { STR(pkcs11_engine_path), 0 },
2367 { STR(pkcs11_module_path), 0 },
2368 { STR(driver_param), 0 },
2369 { INT(dot11RSNAConfigPMKLifetime), 0 },
2370 { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
2371 { INT(dot11RSNAConfigSATimeout), 0 },
2372 #ifndef CONFIG_NO_CONFIG_WRITE
2373 { INT(update_config), 0 },
2374 #endif /* CONFIG_NO_CONFIG_WRITE */
2375 { FUNC_NO_VAR(load_dynamic_eap), 0 },
2377 { FUNC(uuid), CFG_CHANGED_UUID },
2378 { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
2379 { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
2380 { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
2381 { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
2382 { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
2383 { STR(device_type), CFG_CHANGED_DEVICE_TYPE },
2384 { FUNC(os_version), CFG_CHANGED_OS_VERSION },
2385 { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
2386 { INT_RANGE(wps_cred_processing, 0, 2), 0 },
2387 #endif /* CONFIG_WPS */
2389 { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
2390 { INT(p2p_listen_reg_class), 0 },
2391 { INT(p2p_listen_channel), 0 },
2392 { INT(p2p_oper_reg_class), 0 },
2393 { INT(p2p_oper_channel), 0 },
2394 { INT_RANGE(p2p_go_intent, 0, 15), 0 },
2395 { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
2396 { INT_RANGE(persistent_reconnect, 0, 1), 0 },
2397 #endif /* CONFIG_P2P */
2398 { FUNC(country), CFG_CHANGED_COUNTRY },
2399 { INT(bss_max_count), 0 },
2400 { INT_RANGE(filter_ssids, 0, 1), 0 }
2410 #define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0]))
2413 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
2418 for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
2419 const struct global_parse_data *field = &global_fields[i];
2420 size_t flen = os_strlen(field->name);
2421 if (os_strncmp(pos, field->name, flen) != 0 ||
2425 if (field->parser(field, config, line, pos + flen + 1)) {
2426 wpa_printf(MSG_ERROR, "Line %d: failed to "
2427 "parse '%s'.", line, pos);
2430 config->changed_parameters |= field->changed_flag;
2433 if (i == NUM_GLOBAL_FIELDS) {
2436 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",