1 /*
2 * WPA Supplicant / Configuration backend: Windows registry
3 * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 *
8 * This file implements a configuration backend for Windows registry. All the
9 * configuration information is stored in the registry and the format for
10 * network configuration fields is same as described in the sample
11 * configuration file, wpa_supplicant.conf.
12 *
13 * Configuration data is in
14 * \a HKEY_LOCAL_MACHINE\\SOFTWARE\\%wpa_supplicant\\configs
15 * key. Each configuration profile has its own key under this. In terms of text
16 * files, each profile would map to a separate text file with possibly multiple
17 * networks. Under each profile, there is a networks key that lists all
18 * networks as a subkey. Each network has set of values in the same way as
19 * network block in the configuration file. In addition, blobs subkey has
20 * possible blobs as values.
21 *
22 * Example network configuration block:
23 * \verbatim
24 HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
25 ssid="example"
26 key_mgmt=WPA-PSK
27 \endverbatim
28 */
29
30 #include "includes.h"
31
32 #include "common.h"
33 #include "uuid.h"
34 #include "config.h"
35
36 #ifndef WPA_KEY_ROOT
37 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
38 #endif
39 #ifndef WPA_KEY_PREFIX
40 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
41 #endif
42
43 #ifdef UNICODE
44 #define TSTR "%S"
45 #else /* UNICODE */
46 #define TSTR "%s"
47 #endif /* UNICODE */
48
49
wpa_config_read_blobs(struct wpa_config * config,HKEY hk)50 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
51 {
52 struct wpa_config_blob *blob;
53 int errors = 0;
54 HKEY bhk;
55 LONG ret;
56 DWORD i;
57
58 ret = RegOpenKeyEx(hk, TEXT("blobs"), 0, KEY_QUERY_VALUE, &bhk);
59 if (ret != ERROR_SUCCESS) {
60 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
61 "blobs key");
62 return 0; /* assume no blobs */
63 }
64
65 for (i = 0; ; i++) {
66 #define TNAMELEN 255
67 TCHAR name[TNAMELEN];
68 char data[4096];
69 DWORD namelen, datalen, type;
70
71 namelen = TNAMELEN;
72 datalen = sizeof(data);
73 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
74 (LPBYTE) data, &datalen);
75
76 if (ret == ERROR_NO_MORE_ITEMS)
77 break;
78
79 if (ret != ERROR_SUCCESS) {
80 wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
81 (unsigned int) ret);
82 break;
83 }
84
85 if (namelen >= TNAMELEN)
86 namelen = TNAMELEN - 1;
87 name[namelen] = TEXT('\0');
88 wpa_unicode2ascii_inplace(name);
89
90 if (datalen >= sizeof(data))
91 datalen = sizeof(data) - 1;
92
93 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
94 (int) i, name, (int) datalen);
95
96 blob = os_zalloc(sizeof(*blob));
97 if (blob == NULL) {
98 errors++;
99 break;
100 }
101 blob->name = os_strdup((char *) name);
102 blob->data = os_malloc(datalen);
103 if (blob->name == NULL || blob->data == NULL) {
104 wpa_config_free_blob(blob);
105 errors++;
106 break;
107 }
108 os_memcpy(blob->data, data, datalen);
109 blob->len = datalen;
110
111 wpa_config_set_blob(config, blob);
112 }
113
114 RegCloseKey(bhk);
115
116 return errors ? -1 : 0;
117 }
118
119
wpa_config_read_reg_dword(HKEY hk,const TCHAR * name,int * _val)120 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
121 {
122 DWORD val, buflen;
123 LONG ret;
124
125 buflen = sizeof(val);
126 ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
127 if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
128 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
129 *_val = val;
130 return 0;
131 }
132
133 return -1;
134 }
135
136
wpa_config_read_reg_string(HKEY hk,const TCHAR * name)137 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
138 {
139 DWORD buflen;
140 LONG ret;
141 TCHAR *val;
142
143 buflen = 0;
144 ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
145 if (ret != ERROR_SUCCESS)
146 return NULL;
147 val = os_malloc(buflen);
148 if (val == NULL)
149 return NULL;
150
151 ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
152 if (ret != ERROR_SUCCESS) {
153 os_free(val);
154 return NULL;
155 }
156
157 wpa_unicode2ascii_inplace(val);
158 wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
159 return (char *) val;
160 }
161
162
163 #ifdef CONFIG_WPS
wpa_config_read_global_uuid(struct wpa_config * config,HKEY hk)164 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
165 {
166 char *str;
167 int ret = 0;
168
169 str = wpa_config_read_reg_string(hk, TEXT("uuid"));
170 if (str == NULL)
171 return 0;
172
173 if (uuid_str2bin(str, config->uuid))
174 ret = -1;
175
176 os_free(str);
177
178 return ret;
179 }
180
181
wpa_config_read_global_os_version(struct wpa_config * config,HKEY hk)182 static int wpa_config_read_global_os_version(struct wpa_config *config,
183 HKEY hk)
184 {
185 char *str;
186 int ret = 0;
187
188 str = wpa_config_read_reg_string(hk, TEXT("os_version"));
189 if (str == NULL)
190 return 0;
191
192 if (hexstr2bin(str, config->os_version, 4))
193 ret = -1;
194
195 os_free(str);
196
197 return ret;
198 }
199 #endif /* CONFIG_WPS */
200
201
wpa_config_read_global(struct wpa_config * config,HKEY hk)202 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
203 {
204 int errors = 0;
205
206 wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
207 wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
208 &config->fast_reauth);
209 wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
210 (int *) &config->dot11RSNAConfigPMKLifetime);
211 wpa_config_read_reg_dword(hk,
212 TEXT("dot11RSNAConfigPMKReauthThreshold"),
213 (int *)
214 &config->dot11RSNAConfigPMKReauthThreshold);
215 wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
216 (int *) &config->dot11RSNAConfigSATimeout);
217 wpa_config_read_reg_dword(hk, TEXT("update_config"),
218 &config->update_config);
219
220 if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
221 &config->eapol_version) == 0) {
222 if (config->eapol_version < 1 ||
223 config->eapol_version > 2) {
224 wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
225 config->eapol_version);
226 errors++;
227 }
228 }
229
230 config->ctrl_interface = wpa_config_read_reg_string(
231 hk, TEXT("ctrl_interface"));
232
233 #ifdef CONFIG_WPS
234 if (wpa_config_read_global_uuid(config, hk))
235 errors++;
236 config->device_name = wpa_config_read_reg_string(
237 hk, TEXT("device_name"));
238 config->manufacturer = wpa_config_read_reg_string(
239 hk, TEXT("manufacturer"));
240 config->model_name = wpa_config_read_reg_string(
241 hk, TEXT("model_name"));
242 config->serial_number = wpa_config_read_reg_string(
243 hk, TEXT("serial_number"));
244 {
245 char *t = wpa_config_read_reg_string(
246 hk, TEXT("device_type"));
247 if (t && wps_dev_type_str2bin(t, config->device_type))
248 errors++;
249 os_free(t);
250 }
251 config->config_methods = wpa_config_read_reg_string(
252 hk, TEXT("config_methods"));
253 if (wpa_config_read_global_os_version(config, hk))
254 errors++;
255 wpa_config_read_reg_dword(hk, TEXT("wps_cred_processing"),
256 &config->wps_cred_processing);
257 #endif /* CONFIG_WPS */
258 #ifdef CONFIG_P2P
259 config->p2p_ssid_postfix = wpa_config_read_reg_string(
260 hk, TEXT("p2p_ssid_postfix"));
261 wpa_config_read_reg_dword(hk, TEXT("p2p_group_idle"),
262 (int *) &config->p2p_group_idle);
263 #endif /* CONFIG_P2P */
264
265 wpa_config_read_reg_dword(hk, TEXT("bss_max_count"),
266 (int *) &config->bss_max_count);
267 wpa_config_read_reg_dword(hk, TEXT("filter_ssids"),
268 &config->filter_ssids);
269 wpa_config_read_reg_dword(hk, TEXT("max_num_sta"),
270 (int *) &config->max_num_sta);
271 wpa_config_read_reg_dword(hk, TEXT("disassoc_low_ack"),
272 (int *) &config->disassoc_low_ack);
273
274 return errors ? -1 : 0;
275 }
276
277
wpa_config_read_network(HKEY hk,const TCHAR * netw,int id)278 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
279 int id)
280 {
281 HKEY nhk;
282 LONG ret;
283 DWORD i;
284 struct wpa_ssid *ssid;
285 int errors = 0;
286
287 ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
288 if (ret != ERROR_SUCCESS) {
289 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
290 "network '" TSTR "'", netw);
291 return NULL;
292 }
293
294 wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
295 ssid = os_zalloc(sizeof(*ssid));
296 if (ssid == NULL) {
297 RegCloseKey(nhk);
298 return NULL;
299 }
300 ssid->id = id;
301
302 wpa_config_set_network_defaults(ssid);
303
304 for (i = 0; ; i++) {
305 TCHAR name[255], data[1024];
306 DWORD namelen, datalen, type;
307
308 namelen = 255;
309 datalen = sizeof(data);
310 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
311 (LPBYTE) data, &datalen);
312
313 if (ret == ERROR_NO_MORE_ITEMS)
314 break;
315
316 if (ret != ERROR_SUCCESS) {
317 wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
318 (unsigned int) ret);
319 break;
320 }
321
322 if (namelen >= 255)
323 namelen = 255 - 1;
324 name[namelen] = TEXT('\0');
325
326 if (datalen >= 1024)
327 datalen = 1024 - 1;
328 data[datalen] = TEXT('\0');
329
330 wpa_unicode2ascii_inplace(name);
331 wpa_unicode2ascii_inplace(data);
332 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
333 errors++;
334 }
335
336 RegCloseKey(nhk);
337
338 if (ssid->passphrase) {
339 if (ssid->psk_set) {
340 wpa_printf(MSG_ERROR, "Both PSK and passphrase "
341 "configured for network '" TSTR "'.", netw);
342 errors++;
343 }
344 wpa_config_update_psk(ssid);
345 }
346
347 if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
348 !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
349 !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
350 /* Group cipher cannot be stronger than the pairwise cipher. */
351 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
352 "list since it was not allowed for pairwise "
353 "cipher for network '" TSTR "'.", netw);
354 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
355 }
356
357 if (errors) {
358 wpa_config_free_ssid(ssid);
359 ssid = NULL;
360 }
361
362 return ssid;
363 }
364
365
wpa_config_read_networks(struct wpa_config * config,HKEY hk)366 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
367 {
368 HKEY nhk;
369 struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
370 int errors = 0;
371 LONG ret;
372 DWORD i;
373
374 ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
375 &nhk);
376 if (ret != ERROR_SUCCESS) {
377 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
378 "registry key");
379 return -1;
380 }
381
382 for (i = 0; ; i++) {
383 TCHAR name[255];
384 DWORD namelen;
385
386 namelen = 255;
387 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
388 NULL);
389
390 if (ret == ERROR_NO_MORE_ITEMS)
391 break;
392
393 if (ret != ERROR_SUCCESS) {
394 wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
395 (unsigned int) ret);
396 break;
397 }
398
399 if (namelen >= 255)
400 namelen = 255 - 1;
401 name[namelen] = '\0';
402
403 ssid = wpa_config_read_network(nhk, name, i);
404 if (ssid == NULL) {
405 wpa_printf(MSG_ERROR, "Failed to parse network "
406 "profile '%s'.", name);
407 errors++;
408 continue;
409 }
410 if (head == NULL) {
411 head = tail = ssid;
412 } else {
413 tail->next = ssid;
414 tail = ssid;
415 }
416 if (wpa_config_add_prio_network(config, ssid)) {
417 wpa_printf(MSG_ERROR, "Failed to add network profile "
418 "'%s' to priority list.", name);
419 errors++;
420 continue;
421 }
422 }
423
424 RegCloseKey(nhk);
425
426 config->ssid = head;
427
428 return errors ? -1 : 0;
429 }
430
431
wpa_config_read(const char * name)432 struct wpa_config * wpa_config_read(const char *name)
433 {
434 TCHAR buf[256];
435 int errors = 0;
436 struct wpa_config *config;
437 HKEY hk;
438 LONG ret;
439
440 config = wpa_config_alloc_empty(NULL, NULL);
441 if (config == NULL)
442 return NULL;
443 wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
444
445 #ifdef UNICODE
446 _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
447 #else /* UNICODE */
448 os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
449 #endif /* UNICODE */
450
451 ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
452 if (ret != ERROR_SUCCESS) {
453 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
454 "configuration registry HKLM\\" TSTR, buf);
455 os_free(config);
456 return NULL;
457 }
458
459 if (wpa_config_read_global(config, hk))
460 errors++;
461
462 if (wpa_config_read_networks(config, hk))
463 errors++;
464
465 if (wpa_config_read_blobs(config, hk))
466 errors++;
467
468 wpa_config_debug_dump_networks(config);
469
470 RegCloseKey(hk);
471
472 if (errors) {
473 wpa_config_free(config);
474 config = NULL;
475 }
476
477 return config;
478 }
479
480
wpa_config_write_reg_dword(HKEY hk,const TCHAR * name,int val,int def)481 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
482 int def)
483 {
484 LONG ret;
485 DWORD _val = val;
486
487 if (val == def) {
488 RegDeleteValue(hk, name);
489 return 0;
490 }
491
492 ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
493 sizeof(_val));
494 if (ret != ERROR_SUCCESS) {
495 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
496 name, val, (int) GetLastError());
497 return -1;
498 }
499
500 return 0;
501 }
502
503
wpa_config_write_reg_string(HKEY hk,const char * name,const char * val)504 static int wpa_config_write_reg_string(HKEY hk, const char *name,
505 const char *val)
506 {
507 LONG ret;
508 TCHAR *_name, *_val;
509
510 _name = wpa_strdup_tchar(name);
511 if (_name == NULL)
512 return -1;
513
514 if (val == NULL) {
515 RegDeleteValue(hk, _name);
516 os_free(_name);
517 return 0;
518 }
519
520 _val = wpa_strdup_tchar(val);
521 if (_val == NULL) {
522 os_free(_name);
523 return -1;
524 }
525 ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
526 (os_strlen(val) + 1) * sizeof(TCHAR));
527 if (ret != ERROR_SUCCESS) {
528 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
529 "error %d", name, val, (int) GetLastError());
530 os_free(_name);
531 os_free(_val);
532 return -1;
533 }
534
535 os_free(_name);
536 os_free(_val);
537 return 0;
538 }
539
540
wpa_config_write_global(struct wpa_config * config,HKEY hk)541 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
542 {
543 #ifdef CONFIG_CTRL_IFACE
544 wpa_config_write_reg_string(hk, "ctrl_interface",
545 config->ctrl_interface);
546 #endif /* CONFIG_CTRL_IFACE */
547
548 wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
549 config->eapol_version,
550 DEFAULT_EAPOL_VERSION);
551 wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
552 DEFAULT_AP_SCAN);
553 wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
554 config->fast_reauth, DEFAULT_FAST_REAUTH);
555 wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
556 config->dot11RSNAConfigPMKLifetime, 0);
557 wpa_config_write_reg_dword(hk,
558 TEXT("dot11RSNAConfigPMKReauthThreshold"),
559 config->dot11RSNAConfigPMKReauthThreshold,
560 0);
561 wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
562 config->dot11RSNAConfigSATimeout, 0);
563 wpa_config_write_reg_dword(hk, TEXT("update_config"),
564 config->update_config,
565 0);
566 #ifdef CONFIG_WPS
567 if (!is_nil_uuid(config->uuid)) {
568 char buf[40];
569 uuid_bin2str(config->uuid, buf, sizeof(buf));
570 wpa_config_write_reg_string(hk, "uuid", buf);
571 }
572 wpa_config_write_reg_string(hk, "device_name", config->device_name);
573 wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
574 wpa_config_write_reg_string(hk, "model_name", config->model_name);
575 wpa_config_write_reg_string(hk, "model_number", config->model_number);
576 wpa_config_write_reg_string(hk, "serial_number",
577 config->serial_number);
578 {
579 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
580 buf = wps_dev_type_bin2str(config->device_type,
581 _buf, sizeof(_buf));
582 wpa_config_write_reg_string(hk, "device_type", buf);
583 }
584 wpa_config_write_reg_string(hk, "config_methods",
585 config->config_methods);
586 if (WPA_GET_BE32(config->os_version)) {
587 char vbuf[10];
588 os_snprintf(vbuf, sizeof(vbuf), "%08x",
589 WPA_GET_BE32(config->os_version));
590 wpa_config_write_reg_string(hk, "os_version", vbuf);
591 }
592 wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
593 config->wps_cred_processing, 0);
594 #endif /* CONFIG_WPS */
595 #ifdef CONFIG_P2P
596 wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
597 config->p2p_ssid_postfix);
598 wpa_config_write_reg_dword(hk, TEXT("p2p_group_idle"),
599 config->p2p_group_idle, 0);
600 #endif /* CONFIG_P2P */
601
602 wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
603 config->bss_max_count,
604 DEFAULT_BSS_MAX_COUNT);
605 wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
606 config->filter_ssids, 0);
607 wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
608 config->max_num_sta, DEFAULT_MAX_NUM_STA);
609 wpa_config_write_reg_dword(hk, TEXT("disassoc_low_ack"),
610 config->disassoc_low_ack, 0);
611
612 return 0;
613 }
614
615
wpa_config_delete_subkeys(HKEY hk,const TCHAR * key)616 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
617 {
618 HKEY nhk;
619 int i, errors = 0;
620 LONG ret;
621
622 ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
623 if (ret != ERROR_SUCCESS) {
624 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
625 "' for subkey deletion: error 0x%x (%d)", key,
626 (unsigned int) ret, (int) GetLastError());
627 return 0;
628 }
629
630 for (i = 0; ; i++) {
631 TCHAR name[255];
632 DWORD namelen;
633
634 namelen = 255;
635 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
636 NULL);
637
638 if (ret == ERROR_NO_MORE_ITEMS)
639 break;
640
641 if (ret != ERROR_SUCCESS) {
642 wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
643 (unsigned int) ret, (int) GetLastError());
644 break;
645 }
646
647 if (namelen >= 255)
648 namelen = 255 - 1;
649 name[namelen] = TEXT('\0');
650
651 ret = RegDeleteKey(nhk, name);
652 if (ret != ERROR_SUCCESS) {
653 wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
654 (unsigned int) ret, (int) GetLastError());
655 errors++;
656 }
657 }
658
659 RegCloseKey(nhk);
660
661 return errors ? -1 : 0;
662 }
663
664
write_str(HKEY hk,const char * field,struct wpa_ssid * ssid)665 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
666 {
667 char *value = wpa_config_get(ssid, field);
668 if (value == NULL)
669 return;
670 wpa_config_write_reg_string(hk, field, value);
671 os_free(value);
672 }
673
674
write_int(HKEY hk,const char * field,int value,int def)675 static void write_int(HKEY hk, const char *field, int value, int def)
676 {
677 char val[20];
678 if (value == def)
679 return;
680 os_snprintf(val, sizeof(val), "%d", value);
681 wpa_config_write_reg_string(hk, field, val);
682 }
683
684
write_bssid(HKEY hk,struct wpa_ssid * ssid)685 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
686 {
687 char *value = wpa_config_get(ssid, "bssid");
688 if (value == NULL)
689 return;
690 wpa_config_write_reg_string(hk, "bssid", value);
691 os_free(value);
692 }
693
694
write_psk(HKEY hk,struct wpa_ssid * ssid)695 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
696 {
697 char *value = wpa_config_get(ssid, "psk");
698 if (value == NULL)
699 return;
700 wpa_config_write_reg_string(hk, "psk", value);
701 os_free(value);
702 }
703
704
write_proto(HKEY hk,struct wpa_ssid * ssid)705 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
706 {
707 char *value;
708
709 if (ssid->proto == DEFAULT_PROTO)
710 return;
711
712 value = wpa_config_get(ssid, "proto");
713 if (value == NULL)
714 return;
715 if (value[0])
716 wpa_config_write_reg_string(hk, "proto", value);
717 os_free(value);
718 }
719
720
write_key_mgmt(HKEY hk,struct wpa_ssid * ssid)721 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
722 {
723 char *value;
724
725 if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
726 return;
727
728 value = wpa_config_get(ssid, "key_mgmt");
729 if (value == NULL)
730 return;
731 if (value[0])
732 wpa_config_write_reg_string(hk, "key_mgmt", value);
733 os_free(value);
734 }
735
736
write_pairwise(HKEY hk,struct wpa_ssid * ssid)737 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
738 {
739 char *value;
740
741 if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
742 return;
743
744 value = wpa_config_get(ssid, "pairwise");
745 if (value == NULL)
746 return;
747 if (value[0])
748 wpa_config_write_reg_string(hk, "pairwise", value);
749 os_free(value);
750 }
751
752
write_group(HKEY hk,struct wpa_ssid * ssid)753 static void write_group(HKEY hk, struct wpa_ssid *ssid)
754 {
755 char *value;
756
757 if (ssid->group_cipher == DEFAULT_GROUP)
758 return;
759
760 value = wpa_config_get(ssid, "group");
761 if (value == NULL)
762 return;
763 if (value[0])
764 wpa_config_write_reg_string(hk, "group", value);
765 os_free(value);
766 }
767
768
write_auth_alg(HKEY hk,struct wpa_ssid * ssid)769 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
770 {
771 char *value;
772
773 if (ssid->auth_alg == 0)
774 return;
775
776 value = wpa_config_get(ssid, "auth_alg");
777 if (value == NULL)
778 return;
779 if (value[0])
780 wpa_config_write_reg_string(hk, "auth_alg", value);
781 os_free(value);
782 }
783
784
785 #ifdef IEEE8021X_EAPOL
write_eap(HKEY hk,struct wpa_ssid * ssid)786 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
787 {
788 char *value;
789
790 value = wpa_config_get(ssid, "eap");
791 if (value == NULL)
792 return;
793
794 if (value[0])
795 wpa_config_write_reg_string(hk, "eap", value);
796 os_free(value);
797 }
798 #endif /* IEEE8021X_EAPOL */
799
800
write_wep_key(HKEY hk,int idx,struct wpa_ssid * ssid)801 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
802 {
803 char field[20], *value;
804
805 os_snprintf(field, sizeof(field), "wep_key%d", idx);
806 value = wpa_config_get(ssid, field);
807 if (value) {
808 wpa_config_write_reg_string(hk, field, value);
809 os_free(value);
810 }
811 }
812
813
wpa_config_write_network(HKEY hk,struct wpa_ssid * ssid,int id)814 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
815 {
816 int i, errors = 0;
817 HKEY nhk, netw;
818 LONG ret;
819 TCHAR name[5];
820
821 ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
822 if (ret != ERROR_SUCCESS) {
823 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
824 "for subkey addition: error 0x%x (%d)",
825 (unsigned int) ret, (int) GetLastError());
826 return 0;
827 }
828
829 #ifdef UNICODE
830 wsprintf(name, L"%04d", id);
831 #else /* UNICODE */
832 os_snprintf(name, sizeof(name), "%04d", id);
833 #endif /* UNICODE */
834 ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
835 NULL);
836 RegCloseKey(nhk);
837 if (ret != ERROR_SUCCESS) {
838 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
839 " error 0x%x (%d)",
840 name, (unsigned int) ret, (int) GetLastError());
841 return -1;
842 }
843
844 #define STR(t) write_str(netw, #t, ssid)
845 #define INT(t) write_int(netw, #t, ssid->t, 0)
846 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
847 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
848 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
849
850 STR(ssid);
851 INT(scan_ssid);
852 write_bssid(netw, ssid);
853 write_psk(netw, ssid);
854 write_proto(netw, ssid);
855 write_key_mgmt(netw, ssid);
856 write_pairwise(netw, ssid);
857 write_group(netw, ssid);
858 write_auth_alg(netw, ssid);
859 #ifdef IEEE8021X_EAPOL
860 write_eap(netw, ssid);
861 STR(identity);
862 STR(anonymous_identity);
863 STR(password);
864 STR(ca_cert);
865 STR(ca_path);
866 STR(client_cert);
867 STR(private_key);
868 STR(private_key_passwd);
869 STR(dh_file);
870 STR(subject_match);
871 STR(altsubject_match);
872 STR(ca_cert2);
873 STR(ca_path2);
874 STR(client_cert2);
875 STR(private_key2);
876 STR(private_key2_passwd);
877 STR(dh_file2);
878 STR(subject_match2);
879 STR(altsubject_match2);
880 STR(phase1);
881 STR(phase2);
882 STR(pcsc);
883 STR(pin);
884 STR(engine_id);
885 STR(key_id);
886 STR(cert_id);
887 STR(ca_cert_id);
888 STR(key2_id);
889 STR(pin2);
890 STR(engine2_id);
891 STR(cert2_id);
892 STR(ca_cert2_id);
893 INTe(engine);
894 INTe(engine2);
895 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
896 #endif /* IEEE8021X_EAPOL */
897 for (i = 0; i < 4; i++)
898 write_wep_key(netw, i, ssid);
899 INT(wep_tx_keyidx);
900 INT(priority);
901 #ifdef IEEE8021X_EAPOL
902 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
903 STR(pac_file);
904 INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
905 #endif /* IEEE8021X_EAPOL */
906 INT(mode);
907 INT(proactive_key_caching);
908 INT(disabled);
909 INT(peerkey);
910 #ifdef CONFIG_IEEE80211W
911 INT(ieee80211w);
912 #endif /* CONFIG_IEEE80211W */
913 STR(id_str);
914
915 #undef STR
916 #undef INT
917 #undef INT_DEF
918
919 RegCloseKey(netw);
920
921 return errors ? -1 : 0;
922 }
923
924
wpa_config_write_blob(HKEY hk,struct wpa_config_blob * blob)925 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
926 {
927 HKEY bhk;
928 LONG ret;
929 TCHAR *name;
930
931 ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
932 &bhk, NULL);
933 if (ret != ERROR_SUCCESS) {
934 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
935 "error 0x%x (%d)",
936 (unsigned int) ret, (int) GetLastError());
937 return -1;
938 }
939
940 name = wpa_strdup_tchar(blob->name);
941 ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
942 blob->len);
943 if (ret != ERROR_SUCCESS) {
944 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
945 "error 0x%x (%d)", blob->name, (unsigned int) ret,
946 (int) GetLastError());
947 RegCloseKey(bhk);
948 os_free(name);
949 return -1;
950 }
951 os_free(name);
952
953 RegCloseKey(bhk);
954
955 return 0;
956 }
957
958
wpa_config_write(const char * name,struct wpa_config * config)959 int wpa_config_write(const char *name, struct wpa_config *config)
960 {
961 TCHAR buf[256];
962 HKEY hk;
963 LONG ret;
964 int errors = 0;
965 struct wpa_ssid *ssid;
966 struct wpa_config_blob *blob;
967 int id;
968
969 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
970
971 #ifdef UNICODE
972 _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
973 #else /* UNICODE */
974 os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
975 #endif /* UNICODE */
976
977 ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
978 if (ret != ERROR_SUCCESS) {
979 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
980 "configuration registry %s: error %d", buf,
981 (int) GetLastError());
982 return -1;
983 }
984
985 if (wpa_config_write_global(config, hk)) {
986 wpa_printf(MSG_ERROR, "Failed to write global configuration "
987 "data");
988 errors++;
989 }
990
991 wpa_config_delete_subkeys(hk, TEXT("networks"));
992 for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
993 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
994 continue; /* do not save temporary WPS networks */
995 if (wpa_config_write_network(hk, ssid, id))
996 errors++;
997 }
998
999 RegDeleteKey(hk, TEXT("blobs"));
1000 for (blob = config->blobs; blob; blob = blob->next) {
1001 if (wpa_config_write_blob(hk, blob))
1002 errors++;
1003 }
1004
1005 RegCloseKey(hk);
1006
1007 wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1008 name, errors ? "un" : "");
1009 return errors ? -1 : 0;
1010 }
1011