contrib/wpa_supplicant/wpa_supplicant/config_winreg.c

   1 /*
   2  * WPA Supplicant / Configuration backend: Windows registry
   3  * Copyright (c) 2003-2008, 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
  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.
  27  *
  28  * Example network configuration block:
  29  * \verbatim
  30 HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
  31    ssid="example"
  32    key_mgmt=WPA-PSK
  33 \endverbatim
  34  */
  35
  36 #include "includes.h"
  37
  38 #include "common.h"
  39 #include "uuid.h"
  40 #include "config.h"
  41
  42 #ifndef WPA_KEY_ROOT
  43 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
  44 #endif
  45 #ifndef WPA_KEY_PREFIX
  46 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
  47 #endif
  48
  49 #ifdef UNICODE
  50 #define TSTR "%S"
  51 #else /* UNICODE */
  52 #define TSTR "%s"
  53 #endif /* UNICODE */
  54
  55
  56 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
  57 {
  58         struct wpa_config_blob *blob;
  59         int errors = 0;
  60         HKEY bhk;
  61         LONG ret;
  62         DWORD i;
  63
  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 "
  67                            "blobs key");
  68                 return 0; /* assume no blobs */
  69         }
  70
  71         for (i = 0; ; i++) {
  72 #define TNAMELEN 255
  73                 TCHAR name[TNAMELEN];
  74                 char data[4096];
  75                 DWORD namelen, datalen, type;
  76
  77                 namelen = TNAMELEN;
  78                 datalen = sizeof(data);
  79                 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
  80                                    (LPBYTE) data, &datalen);
  81
  82                 if (ret == ERROR_NO_MORE_ITEMS)
  83                         break;
  84
  85                 if (ret != ERROR_SUCCESS) {
  86                         wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
  87                                    (unsigned int) ret);
  88                         break;
  89                 }
  90
  91                 if (namelen >= TNAMELEN)
  92                         namelen = TNAMELEN - 1;
  93                 name[namelen] = TEXT('\0');
  94                 wpa_unicode2ascii_inplace(name);
  95
  96                 if (datalen >= sizeof(data))
  97                         datalen = sizeof(data) - 1;
  98
  99                 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
 100                            (int) i, name, (int) datalen);
 101
 102                 blob = os_zalloc(sizeof(*blob));
 103                 if (blob == NULL) {
 104                         errors++;
 105                         break;
 106                 }
 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);
 111                         errors++;
 112                         break;
 113                 }
 114                 os_memcpy(blob->data, data, datalen);
 115                 blob->len = datalen;
 116
 117                 wpa_config_set_blob(config, blob);
 118         }
 119
 120         RegCloseKey(bhk);
 121
 122         return errors ? -1 : 0;
 123 }
 124
 125
 126 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
 127 {
 128         DWORD val, buflen;
 129         LONG ret;
 130
 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);
 135                 *_val = val;
 136                 return 0;
 137         }
 138
 139         return -1;
 140 }
 141
 142
 143 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
 144 {
 145         DWORD buflen;
 146         LONG ret;
 147         TCHAR *val;
 148
 149         buflen = 0;
 150         ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
 151         if (ret != ERROR_SUCCESS)
 152                 return NULL;
 153         val = os_malloc(buflen);
 154         if (val == NULL)
 155                 return NULL;
 156
 157         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
 158         if (ret != ERROR_SUCCESS) {
 159                 os_free(val);
 160                 return NULL;
 161         }
 162
 163         wpa_unicode2ascii_inplace(val);
 164         wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
 165         return (char *) val;
 166 }
 167
 168
 169 #ifdef CONFIG_WPS
 170 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
 171 {
 172         char *str;
 173         int ret = 0;
 174
 175         str = wpa_config_read_reg_string(hk, TEXT("uuid"));
 176         if (str == NULL)
 177                 return 0;
 178
 179         if (uuid_str2bin(str, config->uuid))
 180                 ret = -1;
 181
 182         os_free(str);
 183
 184         return ret;
 185 }
 186
 187
 188 static int wpa_config_read_global_os_version(struct wpa_config *config,
 189                                              HKEY hk)
 190 {
 191         char *str;
 192         int ret = 0;
 193
 194         str = wpa_config_read_reg_string(hk, TEXT("os_version"));
 195         if (str == NULL)
 196                 return 0;
 197
 198         if (hexstr2bin(str, config->os_version, 4))
 199                 ret = -1;
 200
 201         os_free(str);
 202
 203         return ret;
 204 }
 205 #endif /* CONFIG_WPS */
 206
 207
 208 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 209 {
 210         int errors = 0;
 211
 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"),
 219                                   (int *)
 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);
 225
 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);
 232                         errors++;
 233                 }
 234         }
 235
 236         config->ctrl_interface = wpa_config_read_reg_string(
 237                 hk, TEXT("ctrl_interface"));
 238
 239 #ifdef CONFIG_WPS
 240         if (wpa_config_read_global_uuid(config, hk))
 241                 errors++;
 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         if (wpa_config_read_global_os_version(config, hk))
 253                 errors++;
 254         wpa_config_read_reg_dword(hk, TEXT("wps_cred_processing"),
 255                                   &config->wps_cred_processing);
 256 #endif /* CONFIG_WPS */
 257
 258         return errors ? -1 : 0;
 259 }
 260
 261
 262 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 263                                                  int id)
 264 {
 265         HKEY nhk;
 266         LONG ret;
 267         DWORD i;
 268         struct wpa_ssid *ssid;
 269         int errors = 0;
 270
 271         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 272         if (ret != ERROR_SUCCESS) {
 273                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 274                            "network '" TSTR "'", netw);
 275                 return NULL;
 276         }
 277
 278         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 279         ssid = os_zalloc(sizeof(*ssid));
 280         if (ssid == NULL) {
 281                 RegCloseKey(nhk);
 282                 return NULL;
 283         }
 284         ssid->id = id;
 285
 286         wpa_config_set_network_defaults(ssid);
 287
 288         for (i = 0; ; i++) {
 289                 TCHAR name[255], data[1024];
 290                 DWORD namelen, datalen, type;
 291
 292                 namelen = 255;
 293                 datalen = sizeof(data);
 294                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 295                                    (LPBYTE) data, &datalen);
 296
 297                 if (ret == ERROR_NO_MORE_ITEMS)
 298                         break;
 299
 300                 if (ret != ERROR_SUCCESS) {
 301                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 302                                    (unsigned int) ret);
 303                         break;
 304                 }
 305
 306                 if (namelen >= 255)
 307                         namelen = 255 - 1;
 308                 name[namelen] = TEXT('\0');
 309
 310                 if (datalen >= 1024)
 311                         datalen = 1024 - 1;
 312                 data[datalen] = TEXT('\0');
 313
 314                 wpa_unicode2ascii_inplace(name);
 315                 wpa_unicode2ascii_inplace(data);
 316                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 317                         errors++;
 318         }
 319
 320         RegCloseKey(nhk);
 321
 322         if (ssid->passphrase) {
 323                 if (ssid->psk_set) {
 324                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 325                                    "configured for network '" TSTR "'.", netw);
 326                         errors++;
 327                 }
 328                 wpa_config_update_psk(ssid);
 329         }
 330
 331         if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
 332                                WPA_KEY_MGMT_PSK_SHA256)) &&
 333             !ssid->psk_set) {
 334                 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
 335                            "but no PSK configured for network '" TSTR "'.",
 336                            netw);
 337                 errors++;
 338         }
 339
 340         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 341             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 342             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 343                 /* Group cipher cannot be stronger than the pairwise cipher. */
 344                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 345                            "list since it was not allowed for pairwise "
 346                            "cipher for network '" TSTR "'.", netw);
 347                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 348         }
 349
 350         if (errors) {
 351                 wpa_config_free_ssid(ssid);
 352                 ssid = NULL;
 353         }
 354
 355         return ssid;
 356 }
 357
 358
 359 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 360 {
 361         HKEY nhk;
 362         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 363         int errors = 0;
 364         LONG ret;
 365         DWORD i;
 366
 367         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 368                            &nhk);
 369         if (ret != ERROR_SUCCESS) {
 370                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 371                            "registry key");
 372                 return -1;
 373         }
 374
 375         for (i = 0; ; i++) {
 376                 TCHAR name[255];
 377                 DWORD namelen;
 378
 379                 namelen = 255;
 380                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 381                                    NULL);
 382
 383                 if (ret == ERROR_NO_MORE_ITEMS)
 384                         break;
 385
 386                 if (ret != ERROR_SUCCESS) {
 387                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 388                                    (unsigned int) ret);
 389                         break;
 390                 }
 391
 392                 if (namelen >= 255)
 393                         namelen = 255 - 1;
 394                 name[namelen] = '\0';
 395
 396                 ssid = wpa_config_read_network(nhk, name, i);
 397                 if (ssid == NULL) {
 398                         wpa_printf(MSG_ERROR, "Failed to parse network "
 399                                    "profile '%s'.", name);
 400                         errors++;
 401                         continue;
 402                 }
 403                 if (head == NULL) {
 404                         head = tail = ssid;
 405                 } else {
 406                         tail->next = ssid;
 407                         tail = ssid;
 408                 }
 409                 if (wpa_config_add_prio_network(config, ssid)) {
 410                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 411                                    "'%s' to priority list.", name);
 412                         errors++;
 413                         continue;
 414                 }
 415         }
 416
 417         RegCloseKey(nhk);
 418
 419         config->ssid = head;
 420
 421         return errors ? -1 : 0;
 422 }
 423
 424
 425 struct wpa_config * wpa_config_read(const char *name)
 426 {
 427         TCHAR buf[256];
 428         int errors = 0;
 429         struct wpa_config *config;
 430         HKEY hk;
 431         LONG ret;
 432
 433         config = wpa_config_alloc_empty(NULL, NULL);
 434         if (config == NULL)
 435                 return NULL;
 436         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 437
 438 #ifdef UNICODE
 439         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 440 #else /* UNICODE */
 441         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 442 #endif /* UNICODE */
 443
 444         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 445         if (ret != ERROR_SUCCESS) {
 446                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 447                            "configuration registry HKLM\\" TSTR, buf);
 448                 os_free(config);
 449                 return NULL;
 450         }
 451
 452         if (wpa_config_read_global(config, hk))
 453                 errors++;
 454
 455         if (wpa_config_read_networks(config, hk))
 456                 errors++;
 457
 458         if (wpa_config_read_blobs(config, hk))
 459                 errors++;
 460
 461         wpa_config_debug_dump_networks(config);
 462
 463         RegCloseKey(hk);
 464
 465         if (errors) {
 466                 wpa_config_free(config);
 467                 config = NULL;
 468         }
 469
 470         return config;
 471 }
 472
 473
 474 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 475                                       int def)
 476 {
 477         LONG ret;
 478         DWORD _val = val;
 479
 480         if (val == def) {
 481                 RegDeleteValue(hk, name);
 482                 return 0;
 483         }
 484
 485         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 486                             sizeof(_val));
 487         if (ret != ERROR_SUCCESS) {
 488                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 489                            name, val, (int) GetLastError());
 490                 return -1;
 491         }
 492
 493         return 0;
 494 }
 495
 496
 497 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 498                                        const char *val)
 499 {
 500         LONG ret;
 501         TCHAR *_name, *_val;
 502
 503         _name = wpa_strdup_tchar(name);
 504         if (_name == NULL)
 505                 return -1;
 506
 507         if (val == NULL) {
 508                 RegDeleteValue(hk, _name);
 509                 os_free(_name);
 510                 return 0;
 511         }
 512
 513         _val = wpa_strdup_tchar(val);
 514         if (_val == NULL) {
 515                 os_free(_name);
 516                 return -1;
 517         }
 518         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 519                             (os_strlen(val) + 1) * sizeof(TCHAR));
 520         if (ret != ERROR_SUCCESS) {
 521                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 522                            "error %d", name, val, (int) GetLastError());
 523                 os_free(_name);
 524                 os_free(_val);
 525                 return -1;
 526         }
 527
 528         os_free(_name);
 529         os_free(_val);
 530         return 0;
 531 }
 532
 533
 534 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 535 {
 536 #ifdef CONFIG_CTRL_IFACE
 537         wpa_config_write_reg_string(hk, "ctrl_interface",
 538                                     config->ctrl_interface);
 539 #endif /* CONFIG_CTRL_IFACE */
 540
 541         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 542                                    config->eapol_version,
 543                                    DEFAULT_EAPOL_VERSION);
 544         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 545                                    DEFAULT_AP_SCAN);
 546         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 547                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 548         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 549                                    config->dot11RSNAConfigPMKLifetime, 0);
 550         wpa_config_write_reg_dword(hk,
 551                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 552                                    config->dot11RSNAConfigPMKReauthThreshold,
 553                                    0);
 554         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 555                                    config->dot11RSNAConfigSATimeout, 0);
 556         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 557                                    config->update_config,
 558                                    0);
 559 #ifdef CONFIG_WPS
 560         if (!is_nil_uuid(config->uuid)) {
 561                 char buf[40];
 562                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 563                 wpa_config_write_reg_string(hk, "uuid", buf);
 564         }
 565         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 566         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 567         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 568         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 569         wpa_config_write_reg_string(hk, "serial_number",
 570                                     config->serial_number);
 571         wpa_config_write_reg_string(hk, "device_type", config->device_type);
 572         if (WPA_GET_BE32(config->os_version)) {
 573                 char vbuf[10];
 574                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 575                             WPA_GET_BE32(config->os_version));
 576                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 577         }
 578         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 579                                    config->wps_cred_processing, 0);
 580 #endif /* CONFIG_WPS */
 581
 582         return 0;
 583 }
 584
 585
 586 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 587 {
 588         HKEY nhk;
 589         int i, errors = 0;
 590         LONG ret;
 591
 592         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 593         if (ret != ERROR_SUCCESS) {
 594                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 595                            "' for subkey deletion: error 0x%x (%d)", key,
 596                            (unsigned int) ret, (int) GetLastError());
 597                 return 0;
 598         }
 599
 600         for (i = 0; ; i++) {
 601                 TCHAR name[255];
 602                 DWORD namelen;
 603
 604                 namelen = 255;
 605                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 606                                    NULL);
 607
 608                 if (ret == ERROR_NO_MORE_ITEMS)
 609                         break;
 610
 611                 if (ret != ERROR_SUCCESS) {
 612                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 613                                    (unsigned int) ret, (int) GetLastError());
 614                         break;
 615                 }
 616
 617                 if (namelen >= 255)
 618                         namelen = 255 - 1;
 619                 name[namelen] = TEXT('\0');
 620
 621                 ret = RegDeleteKey(nhk, name);
 622                 if (ret != ERROR_SUCCESS) {
 623                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 624                                    (unsigned int) ret, (int) GetLastError());
 625                         errors++;
 626                 }
 627         }
 628
 629         RegCloseKey(nhk);
 630
 631         return errors ? -1 : 0;
 632 }
 633
 634
 635 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 636 {
 637         char *value = wpa_config_get(ssid, field);
 638         if (value == NULL)
 639                 return;
 640         wpa_config_write_reg_string(hk, field, value);
 641         os_free(value);
 642 }
 643
 644
 645 static void write_int(HKEY hk, const char *field, int value, int def)
 646 {
 647         char val[20];
 648         if (value == def)
 649                 return;
 650         os_snprintf(val, sizeof(val), "%d", value);
 651         wpa_config_write_reg_string(hk, field, val);
 652 }
 653
 654
 655 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 656 {
 657         char *value = wpa_config_get(ssid, "bssid");
 658         if (value == NULL)
 659                 return;
 660         wpa_config_write_reg_string(hk, "bssid", value);
 661         os_free(value);
 662 }
 663
 664
 665 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 666 {
 667         char *value = wpa_config_get(ssid, "psk");
 668         if (value == NULL)
 669                 return;
 670         wpa_config_write_reg_string(hk, "psk", value);
 671         os_free(value);
 672 }
 673
 674
 675 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 676 {
 677         char *value;
 678
 679         if (ssid->proto == DEFAULT_PROTO)
 680                 return;
 681
 682         value = wpa_config_get(ssid, "proto");
 683         if (value == NULL)
 684                 return;
 685         if (value[0])
 686                 wpa_config_write_reg_string(hk, "proto", value);
 687         os_free(value);
 688 }
 689
 690
 691 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 692 {
 693         char *value;
 694
 695         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 696                 return;
 697
 698         value = wpa_config_get(ssid, "key_mgmt");
 699         if (value == NULL)
 700                 return;
 701         if (value[0])
 702                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 703         os_free(value);
 704 }
 705
 706
 707 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 708 {
 709         char *value;
 710
 711         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 712                 return;
 713
 714         value = wpa_config_get(ssid, "pairwise");
 715         if (value == NULL)
 716                 return;
 717         if (value[0])
 718                 wpa_config_write_reg_string(hk, "pairwise", value);
 719         os_free(value);
 720 }
 721
 722
 723 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 724 {
 725         char *value;
 726
 727         if (ssid->group_cipher == DEFAULT_GROUP)
 728                 return;
 729
 730         value = wpa_config_get(ssid, "group");
 731         if (value == NULL)
 732                 return;
 733         if (value[0])
 734                 wpa_config_write_reg_string(hk, "group", value);
 735         os_free(value);
 736 }
 737
 738
 739 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 740 {
 741         char *value;
 742
 743         if (ssid->auth_alg == 0)
 744                 return;
 745
 746         value = wpa_config_get(ssid, "auth_alg");
 747         if (value == NULL)
 748                 return;
 749         if (value[0])
 750                 wpa_config_write_reg_string(hk, "auth_alg", value);
 751         os_free(value);
 752 }
 753
 754
 755 #ifdef IEEE8021X_EAPOL
 756 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 757 {
 758         char *value;
 759
 760         value = wpa_config_get(ssid, "eap");
 761         if (value == NULL)
 762                 return;
 763
 764         if (value[0])
 765                 wpa_config_write_reg_string(hk, "eap", value);
 766         os_free(value);
 767 }
 768 #endif /* IEEE8021X_EAPOL */
 769
 770
 771 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 772 {
 773         char field[20], *value;
 774
 775         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 776         value = wpa_config_get(ssid, field);
 777         if (value) {
 778                 wpa_config_write_reg_string(hk, field, value);
 779                 os_free(value);
 780         }
 781 }
 782
 783
 784 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 785 {
 786         int i, errors = 0;
 787         HKEY nhk, netw;
 788         LONG ret;
 789         TCHAR name[5];
 790
 791         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 792         if (ret != ERROR_SUCCESS) {
 793                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 794                            "for subkey addition: error 0x%x (%d)",
 795                            (unsigned int) ret, (int) GetLastError());
 796                 return 0;
 797         }
 798
 799 #ifdef UNICODE
 800         wsprintf(name, L"%04d", id);
 801 #else /* UNICODE */
 802         os_snprintf(name, sizeof(name), "%04d", id);
 803 #endif /* UNICODE */
 804         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 805                              NULL);
 806         RegCloseKey(nhk);
 807         if (ret != ERROR_SUCCESS) {
 808                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 809                            " error 0x%x (%d)",
 810                            name, (unsigned int) ret, (int) GetLastError());
 811                 return -1;
 812         }
 813
 814 #define STR(t) write_str(netw, #t, ssid)
 815 #define INT(t) write_int(netw, #t, ssid->t, 0)
 816 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 817 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 818 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 819
 820         STR(ssid);
 821         INT(scan_ssid);
 822         write_bssid(netw, ssid);
 823         write_psk(netw, ssid);
 824         write_proto(netw, ssid);
 825         write_key_mgmt(netw, ssid);
 826         write_pairwise(netw, ssid);
 827         write_group(netw, ssid);
 828         write_auth_alg(netw, ssid);
 829 #ifdef IEEE8021X_EAPOL
 830         write_eap(netw, ssid);
 831         STR(identity);
 832         STR(anonymous_identity);
 833         STR(password);
 834         STR(ca_cert);
 835         STR(ca_path);
 836         STR(client_cert);
 837         STR(private_key);
 838         STR(private_key_passwd);
 839         STR(dh_file);
 840         STR(subject_match);
 841         STR(altsubject_match);
 842         STR(ca_cert2);
 843         STR(ca_path2);
 844         STR(client_cert2);
 845         STR(private_key2);
 846         STR(private_key2_passwd);
 847         STR(dh_file2);
 848         STR(subject_match2);
 849         STR(altsubject_match2);
 850         STR(phase1);
 851         STR(phase2);
 852         STR(pcsc);
 853         STR(pin);
 854         STR(engine_id);
 855         STR(key_id);
 856         STR(cert_id);
 857         STR(ca_cert_id);
 858         STR(key2_id);
 859         STR(pin2);
 860         STR(engine2_id);
 861         STR(cert2_id);
 862         STR(ca_cert2_id);
 863         INTe(engine);
 864         INTe(engine2);
 865         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 866 #endif /* IEEE8021X_EAPOL */
 867         for (i = 0; i < 4; i++)
 868                 write_wep_key(netw, i, ssid);
 869         INT(wep_tx_keyidx);
 870         INT(priority);
 871 #ifdef IEEE8021X_EAPOL
 872         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 873         STR(pac_file);
 874         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 875 #endif /* IEEE8021X_EAPOL */
 876         INT(mode);
 877         INT(proactive_key_caching);
 878         INT(disabled);
 879         INT(peerkey);
 880 #ifdef CONFIG_IEEE80211W
 881         INT(ieee80211w);
 882 #endif /* CONFIG_IEEE80211W */
 883         STR(id_str);
 884
 885 #undef STR
 886 #undef INT
 887 #undef INT_DEF
 888
 889         RegCloseKey(netw);
 890
 891         return errors ? -1 : 0;
 892 }
 893
 894
 895 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 896 {
 897         HKEY bhk;
 898         LONG ret;
 899         TCHAR *name;
 900
 901         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 902                              &bhk, NULL);
 903         if (ret != ERROR_SUCCESS) {
 904                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 905                            "error 0x%x (%d)",
 906                            (unsigned int) ret, (int) GetLastError());
 907                 return -1;
 908         }
 909
 910         name = wpa_strdup_tchar(blob->name);
 911         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 912                             blob->len);
 913         if (ret != ERROR_SUCCESS) {
 914                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 915                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 916                            (int) GetLastError());
 917                 RegCloseKey(bhk);
 918                 os_free(name);
 919                 return -1;
 920         }
 921         os_free(name);
 922
 923         RegCloseKey(bhk);
 924
 925         return 0;
 926 }
 927
 928
 929 int wpa_config_write(const char *name, struct wpa_config *config)
 930 {
 931         TCHAR buf[256];
 932         HKEY hk;
 933         LONG ret;
 934         int errors = 0;
 935         struct wpa_ssid *ssid;
 936         struct wpa_config_blob *blob;
 937         int id;
 938
 939         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 940
 941 #ifdef UNICODE
 942         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 943 #else /* UNICODE */
 944         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 945 #endif /* UNICODE */
 946
 947         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 948         if (ret != ERROR_SUCCESS) {
 949                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 950                            "configuration registry %s: error %d", buf,
 951                            (int) GetLastError());
 952                 return -1;
 953         }
 954
 955         if (wpa_config_write_global(config, hk)) {
 956                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 957                            "data");
 958                 errors++;
 959         }
 960
 961         wpa_config_delete_subkeys(hk, TEXT("networks"));
 962         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
 963                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
 964                         continue; /* do not save temporary WPS networks */
 965                 if (wpa_config_write_network(hk, ssid, id))
 966                         errors++;
 967         }
 968
 969         RegDeleteKey(hk, TEXT("blobs"));
 970         for (blob = config->blobs; blob; blob = blob->next) {
 971                 if (wpa_config_write_blob(hk, blob))
 972                         errors++;
 973         }
 974
 975         RegCloseKey(hk);
 976
 977         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
 978                    name, errors ? "un" : "");
 979         return errors ? -1 : 0;
 980 }