2 * WPA Supplicant / Configuration backend: Windows registry
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.
14 * This file implements a configuration backend for Windows registry. All the
15 * configuration information is stored in the registry and the format for
16 * network configuration fields is same as described in the sample
17 * configuration file, wpa_supplicant.conf.
19 * Configuration data is in
20 * \a HKEY_LOCAL_MACHINE\\SOFTWARE\\%wpa_supplicant\\configs
21 * key. Each configuration profile has its own key under this. In terms of text
22 * files, each profile would map to a separate text file with possibly multiple
23 * networks. Under each profile, there is a networks key that lists all
24 * networks as a subkey. Each network has set of values in the same way as
25 * network block in the configuration file. In addition, blobs subkey has
26 * possible blobs as values.
28 * Example network configuration block:
30 HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
43 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
45 #ifndef WPA_KEY_PREFIX
46 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
56 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
58 struct wpa_config_blob *blob;
64 ret = RegOpenKeyEx(hk, TEXT("blobs"), 0, KEY_QUERY_VALUE, &bhk);
65 if (ret != ERROR_SUCCESS) {
66 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
68 return 0; /* assume no blobs */
75 DWORD namelen, datalen, type;
78 datalen = sizeof(data);
79 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
80 (LPBYTE) data, &datalen);
82 if (ret == ERROR_NO_MORE_ITEMS)
85 if (ret != ERROR_SUCCESS) {
86 wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
91 if (namelen >= TNAMELEN)
92 namelen = TNAMELEN - 1;
93 name[namelen] = TEXT('\0');
94 wpa_unicode2ascii_inplace(name);
96 if (datalen >= sizeof(data))
97 datalen = sizeof(data) - 1;
99 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
100 (int) i, name, (int) datalen);
102 blob = os_zalloc(sizeof(*blob));
107 blob->name = os_strdup((char *) name);
108 blob->data = os_malloc(datalen);
109 if (blob->name == NULL || blob->data == NULL) {
110 wpa_config_free_blob(blob);
114 os_memcpy(blob->data, data, datalen);
117 wpa_config_set_blob(config, blob);
122 return errors ? -1 : 0;
126 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
131 buflen = sizeof(val);
132 ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
133 if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
134 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
143 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
150 ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
151 if (ret != ERROR_SUCCESS)
153 val = os_malloc(buflen);
157 ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
158 if (ret != ERROR_SUCCESS) {
163 wpa_unicode2ascii_inplace(val);
164 wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
170 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
175 str = wpa_config_read_reg_string(hk, TEXT("uuid"));
179 if (uuid_str2bin(str, config->uuid))
188 static int wpa_config_read_global_os_version(struct wpa_config *config,
194 str = wpa_config_read_reg_string(hk, TEXT("os_version"));
198 if (hexstr2bin(str, config->os_version, 4))
205 #endif /* CONFIG_WPS */
208 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
212 wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
213 wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
214 &config->fast_reauth);
215 wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
216 (int *) &config->dot11RSNAConfigPMKLifetime);
217 wpa_config_read_reg_dword(hk,
218 TEXT("dot11RSNAConfigPMKReauthThreshold"),
220 &config->dot11RSNAConfigPMKReauthThreshold);
221 wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
222 (int *) &config->dot11RSNAConfigSATimeout);
223 wpa_config_read_reg_dword(hk, TEXT("update_config"),
224 &config->update_config);
226 if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
227 &config->eapol_version) == 0) {
228 if (config->eapol_version < 1 ||
229 config->eapol_version > 2) {
230 wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
231 config->eapol_version);
236 config->ctrl_interface = wpa_config_read_reg_string(
237 hk, TEXT("ctrl_interface"));
240 if (wpa_config_read_global_uuid(config, hk))
242 config->device_name = wpa_config_read_reg_string(
243 hk, TEXT("device_name"));
244 config->manufacturer = wpa_config_read_reg_string(
245 hk, TEXT("manufacturer"));
246 config->model_name = wpa_config_read_reg_string(
247 hk, TEXT("model_name"));
248 config->serial_number = wpa_config_read_reg_string(
249 hk, TEXT("serial_number"));
250 config->device_type = wpa_config_read_reg_string(
251 hk, TEXT("device_type"));
252 config->config_methods = wpa_config_read_reg_string(
253 hk, TEXT("config_methods"));
254 if (wpa_config_read_global_os_version(config, hk))
256 wpa_config_read_reg_dword(hk, TEXT("wps_cred_processing"),
257 &config->wps_cred_processing);
258 #endif /* CONFIG_WPS */
260 config->p2p_ssid_postfix = wpa_config_read_reg_string(
261 hk, TEXT("p2p_ssid_postfix"));
262 #endif /* CONFIG_P2P */
264 wpa_config_read_reg_dword(hk, TEXT("bss_max_count"),
265 (int *) &config->bss_max_count);
266 wpa_config_read_reg_dword(hk, TEXT("filter_ssids"),
267 &config->filter_ssids);
269 return errors ? -1 : 0;
273 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
279 struct wpa_ssid *ssid;
282 ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
283 if (ret != ERROR_SUCCESS) {
284 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
285 "network '" TSTR "'", netw);
289 wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
290 ssid = os_zalloc(sizeof(*ssid));
297 wpa_config_set_network_defaults(ssid);
300 TCHAR name[255], data[1024];
301 DWORD namelen, datalen, type;
304 datalen = sizeof(data);
305 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
306 (LPBYTE) data, &datalen);
308 if (ret == ERROR_NO_MORE_ITEMS)
311 if (ret != ERROR_SUCCESS) {
312 wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
319 name[namelen] = TEXT('\0');
323 data[datalen] = TEXT('\0');
325 wpa_unicode2ascii_inplace(name);
326 wpa_unicode2ascii_inplace(data);
327 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
333 if (ssid->passphrase) {
335 wpa_printf(MSG_ERROR, "Both PSK and passphrase "
336 "configured for network '" TSTR "'.", netw);
339 wpa_config_update_psk(ssid);
342 if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
343 WPA_KEY_MGMT_PSK_SHA256)) &&
345 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
346 "but no PSK configured for network '" TSTR "'.",
351 if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
352 !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
353 !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
354 /* Group cipher cannot be stronger than the pairwise cipher. */
355 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
356 "list since it was not allowed for pairwise "
357 "cipher for network '" TSTR "'.", netw);
358 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
362 wpa_config_free_ssid(ssid);
370 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
373 struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
378 ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
380 if (ret != ERROR_SUCCESS) {
381 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
391 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
394 if (ret == ERROR_NO_MORE_ITEMS)
397 if (ret != ERROR_SUCCESS) {
398 wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
405 name[namelen] = '\0';
407 ssid = wpa_config_read_network(nhk, name, i);
409 wpa_printf(MSG_ERROR, "Failed to parse network "
410 "profile '%s'.", name);
420 if (wpa_config_add_prio_network(config, ssid)) {
421 wpa_printf(MSG_ERROR, "Failed to add network profile "
422 "'%s' to priority list.", name);
432 return errors ? -1 : 0;
436 struct wpa_config * wpa_config_read(const char *name)
440 struct wpa_config *config;
444 config = wpa_config_alloc_empty(NULL, NULL);
447 wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
450 _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
452 os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
455 ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
456 if (ret != ERROR_SUCCESS) {
457 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
458 "configuration registry HKLM\\" TSTR, buf);
463 if (wpa_config_read_global(config, hk))
466 if (wpa_config_read_networks(config, hk))
469 if (wpa_config_read_blobs(config, hk))
472 wpa_config_debug_dump_networks(config);
477 wpa_config_free(config);
485 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
492 RegDeleteValue(hk, name);
496 ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
498 if (ret != ERROR_SUCCESS) {
499 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
500 name, val, (int) GetLastError());
508 static int wpa_config_write_reg_string(HKEY hk, const char *name,
514 _name = wpa_strdup_tchar(name);
519 RegDeleteValue(hk, _name);
524 _val = wpa_strdup_tchar(val);
529 ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
530 (os_strlen(val) + 1) * sizeof(TCHAR));
531 if (ret != ERROR_SUCCESS) {
532 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
533 "error %d", name, val, (int) GetLastError());
545 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
547 #ifdef CONFIG_CTRL_IFACE
548 wpa_config_write_reg_string(hk, "ctrl_interface",
549 config->ctrl_interface);
550 #endif /* CONFIG_CTRL_IFACE */
552 wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
553 config->eapol_version,
554 DEFAULT_EAPOL_VERSION);
555 wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
557 wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
558 config->fast_reauth, DEFAULT_FAST_REAUTH);
559 wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
560 config->dot11RSNAConfigPMKLifetime, 0);
561 wpa_config_write_reg_dword(hk,
562 TEXT("dot11RSNAConfigPMKReauthThreshold"),
563 config->dot11RSNAConfigPMKReauthThreshold,
565 wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
566 config->dot11RSNAConfigSATimeout, 0);
567 wpa_config_write_reg_dword(hk, TEXT("update_config"),
568 config->update_config,
571 if (!is_nil_uuid(config->uuid)) {
573 uuid_bin2str(config->uuid, buf, sizeof(buf));
574 wpa_config_write_reg_string(hk, "uuid", buf);
576 wpa_config_write_reg_string(hk, "device_name", config->device_name);
577 wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
578 wpa_config_write_reg_string(hk, "model_name", config->model_name);
579 wpa_config_write_reg_string(hk, "model_number", config->model_number);
580 wpa_config_write_reg_string(hk, "serial_number",
581 config->serial_number);
582 wpa_config_write_reg_string(hk, "device_type", config->device_type);
583 wpa_config_write_reg_string(hk, "config_methods",
584 config->config_methods);
585 if (WPA_GET_BE32(config->os_version)) {
587 os_snprintf(vbuf, sizeof(vbuf), "%08x",
588 WPA_GET_BE32(config->os_version));
589 wpa_config_write_reg_string(hk, "os_version", vbuf);
591 wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
592 config->wps_cred_processing, 0);
593 #endif /* CONFIG_WPS */
595 wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
596 config->p2p_ssid_postfix);
597 #endif /* CONFIG_P2P */
599 wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
600 config->bss_max_count,
601 DEFAULT_BSS_MAX_COUNT);
602 wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
603 config->filter_ssids, 0);
609 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
615 ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
616 if (ret != ERROR_SUCCESS) {
617 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
618 "' for subkey deletion: error 0x%x (%d)", key,
619 (unsigned int) ret, (int) GetLastError());
628 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
631 if (ret == ERROR_NO_MORE_ITEMS)
634 if (ret != ERROR_SUCCESS) {
635 wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
636 (unsigned int) ret, (int) GetLastError());
642 name[namelen] = TEXT('\0');
644 ret = RegDeleteKey(nhk, name);
645 if (ret != ERROR_SUCCESS) {
646 wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
647 (unsigned int) ret, (int) GetLastError());
654 return errors ? -1 : 0;
658 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
660 char *value = wpa_config_get(ssid, field);
663 wpa_config_write_reg_string(hk, field, value);
668 static void write_int(HKEY hk, const char *field, int value, int def)
673 os_snprintf(val, sizeof(val), "%d", value);
674 wpa_config_write_reg_string(hk, field, val);
678 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
680 char *value = wpa_config_get(ssid, "bssid");
683 wpa_config_write_reg_string(hk, "bssid", value);
688 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
690 char *value = wpa_config_get(ssid, "psk");
693 wpa_config_write_reg_string(hk, "psk", value);
698 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
702 if (ssid->proto == DEFAULT_PROTO)
705 value = wpa_config_get(ssid, "proto");
709 wpa_config_write_reg_string(hk, "proto", value);
714 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
718 if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
721 value = wpa_config_get(ssid, "key_mgmt");
725 wpa_config_write_reg_string(hk, "key_mgmt", value);
730 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
734 if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
737 value = wpa_config_get(ssid, "pairwise");
741 wpa_config_write_reg_string(hk, "pairwise", value);
746 static void write_group(HKEY hk, struct wpa_ssid *ssid)
750 if (ssid->group_cipher == DEFAULT_GROUP)
753 value = wpa_config_get(ssid, "group");
757 wpa_config_write_reg_string(hk, "group", value);
762 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
766 if (ssid->auth_alg == 0)
769 value = wpa_config_get(ssid, "auth_alg");
773 wpa_config_write_reg_string(hk, "auth_alg", value);
778 #ifdef IEEE8021X_EAPOL
779 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
783 value = wpa_config_get(ssid, "eap");
788 wpa_config_write_reg_string(hk, "eap", value);
791 #endif /* IEEE8021X_EAPOL */
794 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
796 char field[20], *value;
798 os_snprintf(field, sizeof(field), "wep_key%d", idx);
799 value = wpa_config_get(ssid, field);
801 wpa_config_write_reg_string(hk, field, value);
807 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
814 ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
815 if (ret != ERROR_SUCCESS) {
816 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
817 "for subkey addition: error 0x%x (%d)",
818 (unsigned int) ret, (int) GetLastError());
823 wsprintf(name, L"%04d", id);
825 os_snprintf(name, sizeof(name), "%04d", id);
827 ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
830 if (ret != ERROR_SUCCESS) {
831 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
833 name, (unsigned int) ret, (int) GetLastError());
837 #define STR(t) write_str(netw, #t, ssid)
838 #define INT(t) write_int(netw, #t, ssid->t, 0)
839 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
840 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
841 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
845 write_bssid(netw, ssid);
846 write_psk(netw, ssid);
847 write_proto(netw, ssid);
848 write_key_mgmt(netw, ssid);
849 write_pairwise(netw, ssid);
850 write_group(netw, ssid);
851 write_auth_alg(netw, ssid);
852 #ifdef IEEE8021X_EAPOL
853 write_eap(netw, ssid);
855 STR(anonymous_identity);
861 STR(private_key_passwd);
864 STR(altsubject_match);
869 STR(private_key2_passwd);
872 STR(altsubject_match2);
888 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
889 #endif /* IEEE8021X_EAPOL */
890 for (i = 0; i < 4; i++)
891 write_wep_key(netw, i, ssid);
894 #ifdef IEEE8021X_EAPOL
895 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
897 INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
898 #endif /* IEEE8021X_EAPOL */
900 INT(proactive_key_caching);
903 #ifdef CONFIG_IEEE80211W
905 #endif /* CONFIG_IEEE80211W */
914 return errors ? -1 : 0;
918 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
924 ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
926 if (ret != ERROR_SUCCESS) {
927 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
929 (unsigned int) ret, (int) GetLastError());
933 name = wpa_strdup_tchar(blob->name);
934 ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
936 if (ret != ERROR_SUCCESS) {
937 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
938 "error 0x%x (%d)", blob->name, (unsigned int) ret,
939 (int) GetLastError());
952 int wpa_config_write(const char *name, struct wpa_config *config)
958 struct wpa_ssid *ssid;
959 struct wpa_config_blob *blob;
962 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
965 _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
967 os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
970 ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
971 if (ret != ERROR_SUCCESS) {
972 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
973 "configuration registry %s: error %d", buf,
974 (int) GetLastError());
978 if (wpa_config_write_global(config, hk)) {
979 wpa_printf(MSG_ERROR, "Failed to write global configuration "
984 wpa_config_delete_subkeys(hk, TEXT("networks"));
985 for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
986 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
987 continue; /* do not save temporary WPS networks */
988 if (wpa_config_write_network(hk, ssid, id))
992 RegDeleteKey(hk, TEXT("blobs"));
993 for (blob = config->blobs; blob; blob = blob->next) {
994 if (wpa_config_write_blob(hk, blob))
1000 wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1001 name, errors ? "un" : "");
1002 return errors ? -1 : 0;