dist/wpa/wpa_supplicant/config_winreg.c

   1 /*
   2  * WPA Supplicant / Configuration backend: Windows registry
   3  * Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
   4  *
   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.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  *
  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.
  18  *
  19  * Configuration data is in HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs
  20  * key. Each configuration profile has its own key under this. In terms of text
  21  * files, each profile would map to a separate text file with possibly multiple
  22  * networks. Under each profile, there is a networks key that lists all
  23  * networks as a subkey. Each network has set of values in the same way as
  24  * network block in the configuration file. In addition, blobs subkey has
  25  * possible blobs as values.
  26  *
  27  * HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
  28  *    ssid="example"
  29  *    key_mgmt=WPA-PSK
  30  */
  31
  32 #include "includes.h"
  33
  34 #include "common.h"
  35 #include "config.h"
  36
  37 #ifndef WPA_KEY_ROOT
  38 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
  39 #endif
  40 #ifndef WPA_KEY_PREFIX
  41 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
  42 #endif
  43
  44 #ifdef UNICODE
  45 #define TSTR "%S"
  46 #else /* UNICODE */
  47 #define TSTR "%s"
  48 #endif /* UNICODE */
  49
  50
  51 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
  52 {
  53         struct wpa_config_blob *blob;
  54         int errors = 0;
  55         HKEY bhk;
  56         LONG ret;
  57         DWORD i;
  58
  59         ret = RegOpenKeyEx(hk, TEXT("blobs"), 0, KEY_QUERY_VALUE, &bhk);
  60         if (ret != ERROR_SUCCESS) {
  61                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
  62                            "blobs key");
  63                 return 0; /* assume no blobs */
  64         }
  65
  66         for (i = 0; ; i++) {
  67 #define TNAMELEN 255
  68                 TCHAR name[TNAMELEN];
  69                 char data[4096];
  70                 DWORD namelen, datalen, type;
  71
  72                 namelen = TNAMELEN;
  73                 datalen = sizeof(data);
  74                 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
  75                                    (LPBYTE) data, &datalen);
  76
  77                 if (ret == ERROR_NO_MORE_ITEMS)
  78                         break;
  79
  80                 if (ret != ERROR_SUCCESS) {
  81                         wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
  82                                    (unsigned int) ret);
  83                         break;
  84                 }
  85
  86                 if (namelen >= TNAMELEN)
  87                         namelen = TNAMELEN - 1;
  88                 name[namelen] = TEXT('\0');
  89                 wpa_unicode2ascii_inplace(name);
  90
  91                 if (datalen >= sizeof(data))
  92                         datalen = sizeof(data) - 1;
  93
  94                 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
  95                            (int) i, name, (int) datalen);
  96
  97                 blob = os_zalloc(sizeof(*blob));
  98                 if (blob == NULL) {
  99                         errors++;
 100                         break;
 101                 }
 102                 blob->name = os_strdup((char *) name);
 103                 blob->data = os_malloc(datalen);
 104                 if (blob->name == NULL || blob->data == NULL) {
 105                         wpa_config_free_blob(blob);
 106                         errors++;
 107                         break;
 108                 }
 109                 os_memcpy(blob->data, data, datalen);
 110                 blob->len = datalen;
 111
 112                 wpa_config_set_blob(config, blob);
 113         }
 114
 115         RegCloseKey(bhk);
 116
 117         return errors ? -1 : 0;
 118 }
 119
 120
 121 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
 122 {
 123         DWORD val, buflen;
 124         LONG ret;
 125
 126         buflen = sizeof(val);
 127         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
 128         if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
 129                 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
 130                 *_val = val;
 131                 return 0;
 132         }
 133
 134         return -1;
 135 }
 136
 137
 138 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
 139 {
 140         DWORD buflen;
 141         LONG ret;
 142         TCHAR *val;
 143
 144         buflen = 0;
 145         ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
 146         if (ret != ERROR_SUCCESS)
 147                 return NULL;
 148         val = os_malloc(buflen);
 149         if (val == NULL)
 150                 return NULL;
 151
 152         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
 153         if (ret != ERROR_SUCCESS) {
 154                 os_free(val);
 155                 return NULL;
 156         }
 157
 158         wpa_unicode2ascii_inplace(val);
 159         wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
 160         return (char *) val;
 161 }
 162
 163
 164 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 165 {
 166         int errors = 0;
 167
 168         wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
 169         wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
 170                                   &config->fast_reauth);
 171         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 172                                   &config->dot11RSNAConfigPMKLifetime);
 173         wpa_config_read_reg_dword(hk,
 174                                   TEXT("dot11RSNAConfigPMKReauthThreshold"),
 175                                   &config->dot11RSNAConfigPMKReauthThreshold);
 176         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 177                                   &config->dot11RSNAConfigSATimeout);
 178         wpa_config_read_reg_dword(hk, TEXT("update_config"),
 179                                   &config->update_config);
 180
 181         if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
 182                                       &config->eapol_version) == 0) {
 183                 if (config->eapol_version < 1 ||
 184                     config->eapol_version > 2) {
 185                         wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
 186                                    config->eapol_version);
 187                         errors++;
 188                 }
 189         }
 190
 191         config->ctrl_interface = wpa_config_read_reg_string(
 192                 hk, TEXT("ctrl_interface"));
 193
 194         return errors ? -1 : 0;
 195 }
 196
 197
 198 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 199                                                  int id)
 200 {
 201         HKEY nhk;
 202         LONG ret;
 203         DWORD i;
 204         struct wpa_ssid *ssid;
 205         int errors = 0;
 206
 207         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 208         if (ret != ERROR_SUCCESS) {
 209                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 210                            "network '" TSTR "'", netw);
 211                 return NULL;
 212         }
 213
 214         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 215         ssid = os_zalloc(sizeof(*ssid));
 216         if (ssid == NULL) {
 217                 RegCloseKey(nhk);
 218                 return NULL;
 219         }
 220         ssid->id = id;
 221
 222         wpa_config_set_network_defaults(ssid);
 223
 224         for (i = 0; ; i++) {
 225                 TCHAR name[255], data[1024];
 226                 DWORD namelen, datalen, type;
 227
 228                 namelen = 255;
 229                 datalen = sizeof(data);
 230                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 231                                    (LPBYTE) data, &datalen);
 232
 233                 if (ret == ERROR_NO_MORE_ITEMS)
 234                         break;
 235
 236                 if (ret != ERROR_SUCCESS) {
 237                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 238                                    (unsigned int) ret);
 239                         break;
 240                 }
 241
 242                 if (namelen >= 255)
 243                         namelen = 255 - 1;
 244                 name[namelen] = TEXT('\0');
 245
 246                 if (datalen >= 1024)
 247                         datalen = 1024 - 1;
 248                 data[datalen] = TEXT('\0');
 249
 250                 wpa_unicode2ascii_inplace(name);
 251                 wpa_unicode2ascii_inplace(data);
 252                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 253                         errors++;
 254         }
 255
 256         RegCloseKey(nhk);
 257
 258         if (ssid->passphrase) {
 259                 if (ssid->psk_set) {
 260                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 261                                    "configured for network '" TSTR "'.", netw);
 262                         errors++;
 263                 }
 264                 wpa_config_update_psk(ssid);
 265         }
 266
 267         if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK)) &&
 268             !ssid->psk_set) {
 269                 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
 270                            "but no PSK configured for network '" TSTR "'.",
 271                            netw);
 272                 errors++;
 273         }
 274
 275         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 276             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 277             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 278                 /* Group cipher cannot be stronger than the pairwise cipher. */
 279                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 280                            "list since it was not allowed for pairwise "
 281                            "cipher for network '" TSTR "'.", netw);
 282                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 283         }
 284
 285         if (errors) {
 286                 wpa_config_free_ssid(ssid);
 287                 ssid = NULL;
 288         }
 289
 290         return ssid;
 291 }
 292
 293
 294 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 295 {
 296         HKEY nhk;
 297         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 298         int errors = 0;
 299         LONG ret;
 300         DWORD i;
 301
 302         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 303                            &nhk);
 304         if (ret != ERROR_SUCCESS) {
 305                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 306                            "registry key");
 307                 return -1;
 308         }
 309
 310         for (i = 0; ; i++) {
 311                 TCHAR name[255];
 312                 DWORD namelen;
 313
 314                 namelen = 255;
 315                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 316                                    NULL);
 317
 318                 if (ret == ERROR_NO_MORE_ITEMS)
 319                         break;
 320
 321                 if (ret != ERROR_SUCCESS) {
 322                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 323                                    (unsigned int) ret);
 324                         break;
 325                 }
 326
 327                 if (namelen >= 255)
 328                         namelen = 255 - 1;
 329                 name[namelen] = '\0';
 330
 331                 ssid = wpa_config_read_network(nhk, name, i);
 332                 if (ssid == NULL) {
 333                         wpa_printf(MSG_ERROR, "Failed to parse network "
 334                                    "profile '%s'.", name);
 335                         errors++;
 336                         continue;
 337                 }
 338                 if (head == NULL) {
 339                         head = tail = ssid;
 340                 } else {
 341                         tail->next = ssid;
 342                         tail = ssid;
 343                 }
 344                 if (wpa_config_add_prio_network(config, ssid)) {
 345                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 346                                    "'%s' to priority list.", name);
 347                         errors++;
 348                         continue;
 349                 }
 350         }
 351
 352         RegCloseKey(nhk);
 353
 354         config->ssid = head;
 355
 356         return errors ? -1 : 0;
 357 }
 358
 359
 360 struct wpa_config * wpa_config_read(const char *name)
 361 {
 362         TCHAR buf[256];
 363         int errors = 0;
 364         struct wpa_config *config;
 365         HKEY hk;
 366         LONG ret;
 367
 368         config = wpa_config_alloc_empty(NULL, NULL);
 369         if (config == NULL)
 370                 return NULL;
 371         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 372
 373 #ifdef UNICODE
 374         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 375 #else /* UNICODE */
 376         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 377 #endif /* UNICODE */
 378
 379         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 380         if (ret != ERROR_SUCCESS) {
 381                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 382                            "configuration registry HKLM\\" TSTR, buf);
 383                 os_free(config);
 384                 return NULL;
 385         }
 386
 387         if (wpa_config_read_global(config, hk))
 388                 errors++;
 389
 390         if (wpa_config_read_networks(config, hk))
 391                 errors++;
 392
 393         if (wpa_config_read_blobs(config, hk))
 394                 errors++;
 395
 396         wpa_config_debug_dump_networks(config);
 397
 398         RegCloseKey(hk);
 399
 400         if (errors) {
 401                 wpa_config_free(config);
 402                 config = NULL;
 403         }
 404
 405         return config;
 406 }
 407
 408
 409 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 410                                       int def)
 411 {
 412         LONG ret;
 413         DWORD _val = val;
 414
 415         if (val == def) {
 416                 RegDeleteValue(hk, name);
 417                 return 0;
 418         }
 419
 420         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 421                             sizeof(_val));
 422         if (ret != ERROR_SUCCESS) {
 423                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 424                            name, val, (int) GetLastError());
 425                 return -1;
 426         }
 427
 428         return 0;
 429 }
 430
 431
 432 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 433                                        const char *val)
 434 {
 435         LONG ret;
 436         TCHAR *_name, *_val;
 437
 438         _name = wpa_strdup_tchar(name);
 439         if (_name == NULL)
 440                 return -1;
 441
 442         if (val == NULL) {
 443                 RegDeleteValue(hk, _name);
 444                 os_free(_name);
 445                 return 0;
 446         }
 447
 448         _val = wpa_strdup_tchar(val);
 449         if (_val == NULL) {
 450                 os_free(_name);
 451                 return -1;
 452         }
 453         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 454                             (os_strlen(val) + 1) * sizeof(TCHAR));
 455         if (ret != ERROR_SUCCESS) {
 456                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 457                            "error %d", name, val, (int) GetLastError());
 458                 os_free(_name);
 459                 os_free(_val);
 460                 return -1;
 461         }
 462
 463         os_free(_name);
 464         os_free(_val);
 465         return 0;
 466 }
 467
 468
 469 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 470 {
 471 #ifdef CONFIG_CTRL_IFACE
 472         wpa_config_write_reg_string(hk, "ctrl_interface",
 473                                     config->ctrl_interface);
 474 #endif /* CONFIG_CTRL_IFACE */
 475
 476         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 477                                    config->eapol_version,
 478                                    DEFAULT_EAPOL_VERSION);
 479         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 480                                    DEFAULT_AP_SCAN);
 481         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 482                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 483         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 484                                    config->dot11RSNAConfigPMKLifetime, 0);
 485         wpa_config_write_reg_dword(hk,
 486                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 487                                    config->dot11RSNAConfigPMKReauthThreshold,
 488                                    0);
 489         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 490                                    config->dot11RSNAConfigSATimeout, 0);
 491         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 492                                    config->update_config,
 493                                    0);
 494
 495         return 0;
 496 }
 497
 498
 499 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 500 {
 501         HKEY nhk;
 502         int i, errors = 0;
 503         LONG ret;
 504
 505         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 506         if (ret != ERROR_SUCCESS) {
 507                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 508                            "' for subkey deletion: error 0x%x (%d)", key,
 509                            (unsigned int) ret, (int) GetLastError());
 510                 return 0;
 511         }
 512
 513         for (i = 0; ; i++) {
 514                 TCHAR name[255];
 515                 DWORD namelen;
 516
 517                 namelen = 255;
 518                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 519                                    NULL);
 520
 521                 if (ret == ERROR_NO_MORE_ITEMS)
 522                         break;
 523
 524                 if (ret != ERROR_SUCCESS) {
 525                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 526                                    (unsigned int) ret, (int) GetLastError());
 527                         break;
 528                 }
 529
 530                 if (namelen >= 255)
 531                         namelen = 255 - 1;
 532                 name[namelen] = TEXT('\0');
 533
 534                 ret = RegDeleteKey(nhk, name);
 535                 if (ret != ERROR_SUCCESS) {
 536                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 537                                    (unsigned int) ret, (int) GetLastError());
 538                         errors++;
 539                 }
 540         }
 541
 542         RegCloseKey(nhk);
 543
 544         return errors ? -1 : 0;
 545 }
 546
 547
 548 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 549 {
 550         char *value = wpa_config_get(ssid, field);
 551         if (value == NULL)
 552                 return;
 553         wpa_config_write_reg_string(hk, field, value);
 554         os_free(value);
 555 }
 556
 557
 558 static void write_int(HKEY hk, const char *field, int value, int def)
 559 {
 560         char val[20];
 561         if (value == def)
 562                 return;
 563         os_snprintf(val, sizeof(val), "%d", value);
 564         wpa_config_write_reg_string(hk, field, val);
 565 }
 566
 567
 568 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 569 {
 570         char *value = wpa_config_get(ssid, "bssid");
 571         if (value == NULL)
 572                 return;
 573         wpa_config_write_reg_string(hk, "bssid", value);
 574         os_free(value);
 575 }
 576
 577
 578 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 579 {
 580         char *value = wpa_config_get(ssid, "psk");
 581         if (value == NULL)
 582                 return;
 583         wpa_config_write_reg_string(hk, "psk", value);
 584         os_free(value);
 585 }
 586
 587
 588 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 589 {
 590         char *value;
 591
 592         if (ssid->proto == DEFAULT_PROTO)
 593                 return;
 594
 595         value = wpa_config_get(ssid, "proto");
 596         if (value == NULL)
 597                 return;
 598         if (value[0])
 599                 wpa_config_write_reg_string(hk, "proto", value);
 600         os_free(value);
 601 }
 602
 603
 604 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 605 {
 606         char *value;
 607
 608         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 609                 return;
 610
 611         value = wpa_config_get(ssid, "key_mgmt");
 612         if (value == NULL)
 613                 return;
 614         if (value[0])
 615                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 616         os_free(value);
 617 }
 618
 619
 620 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 621 {
 622         char *value;
 623
 624         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 625                 return;
 626
 627         value = wpa_config_get(ssid, "pairwise");
 628         if (value == NULL)
 629                 return;
 630         if (value[0])
 631                 wpa_config_write_reg_string(hk, "pairwise", value);
 632         os_free(value);
 633 }
 634
 635
 636 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 637 {
 638         char *value;
 639
 640         if (ssid->group_cipher == DEFAULT_GROUP)
 641                 return;
 642
 643         value = wpa_config_get(ssid, "group");
 644         if (value == NULL)
 645                 return;
 646         if (value[0])
 647                 wpa_config_write_reg_string(hk, "group", value);
 648         os_free(value);
 649 }
 650
 651
 652 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 653 {
 654         char *value;
 655
 656         if (ssid->auth_alg == 0)
 657                 return;
 658
 659         value = wpa_config_get(ssid, "auth_alg");
 660         if (value == NULL)
 661                 return;
 662         if (value[0])
 663                 wpa_config_write_reg_string(hk, "auth_alg", value);
 664         os_free(value);
 665 }
 666
 667
 668 #ifdef IEEE8021X_EAPOL
 669 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 670 {
 671         char *value;
 672
 673         value = wpa_config_get(ssid, "eap");
 674         if (value == NULL)
 675                 return;
 676
 677         if (value[0])
 678                 wpa_config_write_reg_string(hk, "eap", value);
 679         os_free(value);
 680 }
 681 #endif /* IEEE8021X_EAPOL */
 682
 683
 684 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 685 {
 686         char field[20], *value;
 687
 688         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 689         value = wpa_config_get(ssid, field);
 690         if (value) {
 691                 wpa_config_write_reg_string(hk, field, value);
 692                 os_free(value);
 693         }
 694 }
 695
 696
 697 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 698 {
 699         int i, errors = 0;
 700         HKEY nhk, netw;
 701         LONG ret;
 702         TCHAR name[5];
 703
 704         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 705         if (ret != ERROR_SUCCESS) {
 706                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 707                            "for subkey addition: error 0x%x (%d)",
 708                            (unsigned int) ret, (int) GetLastError());
 709                 return 0;
 710         }
 711
 712 #ifdef UNICODE
 713         wsprintf(name, L"%04d", id);
 714 #else /* UNICODE */
 715         os_snprintf(name, sizeof(name), "%04d", id);
 716 #endif /* UNICODE */
 717         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 718                              NULL);
 719         RegCloseKey(nhk);
 720         if (ret != ERROR_SUCCESS) {
 721                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 722                            " error 0x%x (%d)",
 723                            name, (unsigned int) ret, (int) GetLastError());
 724                 return -1;
 725         }
 726
 727 #define STR(t) write_str(netw, #t, ssid)
 728 #define INT(t) write_int(netw, #t, ssid->t, 0)
 729 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 730 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 731 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 732
 733         STR(ssid);
 734         INT(scan_ssid);
 735         write_bssid(netw, ssid);
 736         write_psk(netw, ssid);
 737         write_proto(netw, ssid);
 738         write_key_mgmt(netw, ssid);
 739         write_pairwise(netw, ssid);
 740         write_group(netw, ssid);
 741         write_auth_alg(netw, ssid);
 742 #ifdef IEEE8021X_EAPOL
 743         write_eap(netw, ssid);
 744         STR(identity);
 745         STR(anonymous_identity);
 746         STR(password);
 747         STR(ca_cert);
 748         STR(ca_path);
 749         STR(client_cert);
 750         STR(private_key);
 751         STR(private_key_passwd);
 752         STR(dh_file);
 753         STR(subject_match);
 754         STR(altsubject_match);
 755         STR(ca_cert2);
 756         STR(ca_path2);
 757         STR(client_cert2);
 758         STR(private_key2);
 759         STR(private_key2_passwd);
 760         STR(dh_file2);
 761         STR(subject_match2);
 762         STR(altsubject_match2);
 763         STR(phase1);
 764         STR(phase2);
 765         STR(pcsc);
 766         STR(pin);
 767         STR(engine_id);
 768         STR(key_id);
 769         STR(cert_id);
 770         STR(ca_cert_id);
 771         STR(key2_id);
 772         STR(cert2_id);
 773         STR(ca_cert2_id);
 774         INTe(engine);
 775         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 776 #endif /* IEEE8021X_EAPOL */
 777         for (i = 0; i < 4; i++)
 778                 write_wep_key(netw, i, ssid);
 779         INT(wep_tx_keyidx);
 780         INT(priority);
 781 #ifdef IEEE8021X_EAPOL
 782         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 783         STR(pac_file);
 784         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 785 #endif /* IEEE8021X_EAPOL */
 786         INT(mode);
 787         INT(proactive_key_caching);
 788         INT(disabled);
 789         INT(peerkey);
 790 #ifdef CONFIG_IEEE80211W
 791         INT(ieee80211w);
 792 #endif /* CONFIG_IEEE80211W */
 793         STR(id_str);
 794
 795 #undef STR
 796 #undef INT
 797 #undef INT_DEF
 798
 799         RegCloseKey(netw);
 800
 801         return errors ? -1 : 0;
 802 }
 803
 804
 805 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 806 {
 807         HKEY bhk;
 808         LONG ret;
 809         TCHAR *name;
 810
 811         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 812                              &bhk, NULL);
 813         if (ret != ERROR_SUCCESS) {
 814                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 815                            "error 0x%x (%d)",
 816                            (unsigned int) ret, (int) GetLastError());
 817                 return -1;
 818         }
 819
 820         name = wpa_strdup_tchar(blob->name);
 821         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 822                             blob->len);
 823         if (ret != ERROR_SUCCESS) {
 824                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 825                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 826                            (int) GetLastError());
 827                 RegCloseKey(bhk);
 828                 os_free(name);
 829                 return -1;
 830         }
 831         os_free(name);
 832
 833         RegCloseKey(bhk);
 834
 835         return 0;
 836 }
 837
 838
 839 int wpa_config_write(const char *name, struct wpa_config *config)
 840 {
 841         TCHAR buf[256];
 842         HKEY hk;
 843         LONG ret;
 844         int errors = 0;
 845         struct wpa_ssid *ssid;
 846         struct wpa_config_blob *blob;
 847         int id;
 848
 849         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 850
 851 #ifdef UNICODE
 852         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 853 #else /* UNICODE */
 854         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 855 #endif /* UNICODE */
 856
 857         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 858         if (ret != ERROR_SUCCESS) {
 859                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 860                            "configuration registry %s: error %d", buf,
 861                            (int) GetLastError());
 862                 return -1;
 863         }
 864
 865         if (wpa_config_write_global(config, hk)) {
 866                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 867                            "data");
 868                 errors++;
 869         }
 870
 871         wpa_config_delete_subkeys(hk, TEXT("networks"));
 872         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
 873                 if (wpa_config_write_network(hk, ssid, id))
 874                         errors++;
 875         }
 876
 877         RegDeleteKey(hk, TEXT("blobs"));
 878         for (blob = config->blobs; blob; blob = blob->next) {
 879                 if (wpa_config_write_blob(hk, blob))
 880                         errors++;
 881         }
 882
 883         RegCloseKey(hk);
 884
 885         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
 886                    name, errors ? "un" : "");
 887         return errors ? -1 : 0;
 888 }