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 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
  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
 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
 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
 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
 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
 202 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 203 {
 204         int errors = 0;
 205         int val;
 206
 207         wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
 208         wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
 209                                   &config->fast_reauth);
 210         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 211                                   (int *) &config->dot11RSNAConfigPMKLifetime);
 212         wpa_config_read_reg_dword(hk,
 213                                   TEXT("dot11RSNAConfigPMKReauthThreshold"),
 214                                   (int *)
 215                                   &config->dot11RSNAConfigPMKReauthThreshold);
 216         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 217                                   (int *) &config->dot11RSNAConfigSATimeout);
 218         wpa_config_read_reg_dword(hk, TEXT("update_config"),
 219                                   &config->update_config);
 220
 221         if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
 222                                       &config->eapol_version) == 0) {
 223                 if (config->eapol_version < 1 ||
 224                     config->eapol_version > 2) {
 225                         wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
 226                                    config->eapol_version);
 227                         errors++;
 228                 }
 229         }
 230
 231         config->ctrl_interface = wpa_config_read_reg_string(
 232                 hk, TEXT("ctrl_interface"));
 233
 234 #ifdef CONFIG_WPS
 235         if (wpa_config_read_global_uuid(config, hk))
 236                 errors++;
 237         config->device_name = wpa_config_read_reg_string(
 238                 hk, TEXT("device_name"));
 239         config->manufacturer = wpa_config_read_reg_string(
 240                 hk, TEXT("manufacturer"));
 241         config->model_name = wpa_config_read_reg_string(
 242                 hk, TEXT("model_name"));
 243         config->serial_number = wpa_config_read_reg_string(
 244                 hk, TEXT("serial_number"));
 245         {
 246                 char *t = wpa_config_read_reg_string(
 247                         hk, TEXT("device_type"));
 248                 if (t && wps_dev_type_str2bin(t, config->device_type))
 249                         errors++;
 250                 os_free(t);
 251         }
 252         config->config_methods = wpa_config_read_reg_string(
 253                 hk, TEXT("config_methods"));
 254         if (wpa_config_read_global_os_version(config, hk))
 255                 errors++;
 256         wpa_config_read_reg_dword(hk, TEXT("wps_cred_processing"),
 257                                   &config->wps_cred_processing);
 258 #endif /* CONFIG_WPS */
 259 #ifdef CONFIG_P2P
 260         config->p2p_ssid_postfix = wpa_config_read_reg_string(
 261                 hk, TEXT("p2p_ssid_postfix"));
 262         wpa_config_read_reg_dword(hk, TEXT("p2p_group_idle"),
 263                                   (int *) &config->p2p_group_idle);
 264 #endif /* CONFIG_P2P */
 265
 266         wpa_config_read_reg_dword(hk, TEXT("bss_max_count"),
 267                                   (int *) &config->bss_max_count);
 268         wpa_config_read_reg_dword(hk, TEXT("filter_ssids"),
 269                                   &config->filter_ssids);
 270         wpa_config_read_reg_dword(hk, TEXT("max_num_sta"),
 271                                   (int *) &config->max_num_sta);
 272         wpa_config_read_reg_dword(hk, TEXT("disassoc_low_ack"),
 273                                   (int *) &config->disassoc_low_ack);
 274
 275         wpa_config_read_reg_dword(hk, TEXT("okc"), &config->okc);
 276         wpa_config_read_reg_dword(hk, TEXT("pmf"), &val);
 277         config->pmf = val;
 278
 279         return errors ? -1 : 0;
 280 }
 281
 282
 283 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 284                                                  int id)
 285 {
 286         HKEY nhk;
 287         LONG ret;
 288         DWORD i;
 289         struct wpa_ssid *ssid;
 290         int errors = 0;
 291
 292         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 293         if (ret != ERROR_SUCCESS) {
 294                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 295                            "network '" TSTR "'", netw);
 296                 return NULL;
 297         }
 298
 299         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 300         ssid = os_zalloc(sizeof(*ssid));
 301         if (ssid == NULL) {
 302                 RegCloseKey(nhk);
 303                 return NULL;
 304         }
 305         dl_list_init(&ssid->psk_list);
 306         ssid->id = id;
 307
 308         wpa_config_set_network_defaults(ssid);
 309
 310         for (i = 0; ; i++) {
 311                 TCHAR name[255], data[1024];
 312                 DWORD namelen, datalen, type;
 313
 314                 namelen = 255;
 315                 datalen = sizeof(data);
 316                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 317                                    (LPBYTE) data, &datalen);
 318
 319                 if (ret == ERROR_NO_MORE_ITEMS)
 320                         break;
 321
 322                 if (ret != ERROR_SUCCESS) {
 323                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 324                                    (unsigned int) ret);
 325                         break;
 326                 }
 327
 328                 if (namelen >= 255)
 329                         namelen = 255 - 1;
 330                 name[namelen] = TEXT('\0');
 331
 332                 if (datalen >= 1024)
 333                         datalen = 1024 - 1;
 334                 data[datalen] = TEXT('\0');
 335
 336                 wpa_unicode2ascii_inplace(name);
 337                 wpa_unicode2ascii_inplace(data);
 338                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 339                         errors++;
 340         }
 341
 342         RegCloseKey(nhk);
 343
 344         if (ssid->passphrase) {
 345                 if (ssid->psk_set) {
 346                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 347                                    "configured for network '" TSTR "'.", netw);
 348                         errors++;
 349                 }
 350                 wpa_config_update_psk(ssid);
 351         }
 352
 353         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 354             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 355             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 356                 /* Group cipher cannot be stronger than the pairwise cipher. */
 357                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 358                            "list since it was not allowed for pairwise "
 359                            "cipher for network '" TSTR "'.", netw);
 360                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 361         }
 362
 363         if (errors) {
 364                 wpa_config_free_ssid(ssid);
 365                 ssid = NULL;
 366         }
 367
 368         return ssid;
 369 }
 370
 371
 372 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 373 {
 374         HKEY nhk;
 375         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 376         int errors = 0;
 377         LONG ret;
 378         DWORD i;
 379
 380         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 381                            &nhk);
 382         if (ret != ERROR_SUCCESS) {
 383                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 384                            "registry key");
 385                 return -1;
 386         }
 387
 388         for (i = 0; ; i++) {
 389                 TCHAR name[255];
 390                 DWORD namelen;
 391
 392                 namelen = 255;
 393                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 394                                    NULL);
 395
 396                 if (ret == ERROR_NO_MORE_ITEMS)
 397                         break;
 398
 399                 if (ret != ERROR_SUCCESS) {
 400                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 401                                    (unsigned int) ret);
 402                         break;
 403                 }
 404
 405                 if (namelen >= 255)
 406                         namelen = 255 - 1;
 407                 name[namelen] = '\0';
 408
 409                 ssid = wpa_config_read_network(nhk, name, i);
 410                 if (ssid == NULL) {
 411                         wpa_printf(MSG_ERROR, "Failed to parse network "
 412                                    "profile '%s'.", name);
 413                         errors++;
 414                         continue;
 415                 }
 416                 if (head == NULL) {
 417                         head = tail = ssid;
 418                 } else {
 419                         tail->next = ssid;
 420                         tail = ssid;
 421                 }
 422                 if (wpa_config_add_prio_network(config, ssid)) {
 423                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 424                                    "'%s' to priority list.", name);
 425                         errors++;
 426                         continue;
 427                 }
 428         }
 429
 430         RegCloseKey(nhk);
 431
 432         config->ssid = head;
 433
 434         return errors ? -1 : 0;
 435 }
 436
 437
 438 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
 439 {
 440         TCHAR buf[256];
 441         int errors = 0;
 442         struct wpa_config *config;
 443         HKEY hk;
 444         LONG ret;
 445
 446         if (name == NULL)
 447                 return NULL;
 448         if (cfgp)
 449                 config = cfgp;
 450         else
 451                 config = wpa_config_alloc_empty(NULL, NULL);
 452         if (config == NULL)
 453                 return NULL;
 454         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 455
 456 #ifdef UNICODE
 457         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 458 #else /* UNICODE */
 459         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 460 #endif /* UNICODE */
 461
 462         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 463         if (ret != ERROR_SUCCESS) {
 464                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 465                            "configuration registry HKLM\\" TSTR, buf);
 466                 os_free(config);
 467                 return NULL;
 468         }
 469
 470         if (wpa_config_read_global(config, hk))
 471                 errors++;
 472
 473         if (wpa_config_read_networks(config, hk))
 474                 errors++;
 475
 476         if (wpa_config_read_blobs(config, hk))
 477                 errors++;
 478
 479         wpa_config_debug_dump_networks(config);
 480
 481         RegCloseKey(hk);
 482
 483         if (errors) {
 484                 wpa_config_free(config);
 485                 config = NULL;
 486         }
 487
 488         return config;
 489 }
 490
 491
 492 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 493                                       int def)
 494 {
 495         LONG ret;
 496         DWORD _val = val;
 497
 498         if (val == def) {
 499                 RegDeleteValue(hk, name);
 500                 return 0;
 501         }
 502
 503         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 504                             sizeof(_val));
 505         if (ret != ERROR_SUCCESS) {
 506                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 507                            name, val, (int) GetLastError());
 508                 return -1;
 509         }
 510
 511         return 0;
 512 }
 513
 514
 515 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 516                                        const char *val)
 517 {
 518         LONG ret;
 519         TCHAR *_name, *_val;
 520
 521         _name = wpa_strdup_tchar(name);
 522         if (_name == NULL)
 523                 return -1;
 524
 525         if (val == NULL) {
 526                 RegDeleteValue(hk, _name);
 527                 os_free(_name);
 528                 return 0;
 529         }
 530
 531         _val = wpa_strdup_tchar(val);
 532         if (_val == NULL) {
 533                 os_free(_name);
 534                 return -1;
 535         }
 536         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 537                             (os_strlen(val) + 1) * sizeof(TCHAR));
 538         if (ret != ERROR_SUCCESS) {
 539                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 540                            "error %d", name, val, (int) GetLastError());
 541                 os_free(_name);
 542                 os_free(_val);
 543                 return -1;
 544         }
 545
 546         os_free(_name);
 547         os_free(_val);
 548         return 0;
 549 }
 550
 551
 552 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 553 {
 554 #ifdef CONFIG_CTRL_IFACE
 555         wpa_config_write_reg_string(hk, "ctrl_interface",
 556                                     config->ctrl_interface);
 557 #endif /* CONFIG_CTRL_IFACE */
 558
 559         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 560                                    config->eapol_version,
 561                                    DEFAULT_EAPOL_VERSION);
 562         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 563                                    DEFAULT_AP_SCAN);
 564         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 565                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 566         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 567                                    config->dot11RSNAConfigPMKLifetime, 0);
 568         wpa_config_write_reg_dword(hk,
 569                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 570                                    config->dot11RSNAConfigPMKReauthThreshold,
 571                                    0);
 572         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 573                                    config->dot11RSNAConfigSATimeout, 0);
 574         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 575                                    config->update_config,
 576                                    0);
 577 #ifdef CONFIG_WPS
 578         if (!is_nil_uuid(config->uuid)) {
 579                 char buf[40];
 580                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 581                 wpa_config_write_reg_string(hk, "uuid", buf);
 582         }
 583         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 584         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 585         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 586         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 587         wpa_config_write_reg_string(hk, "serial_number",
 588                                     config->serial_number);
 589         {
 590                 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
 591                 buf = wps_dev_type_bin2str(config->device_type,
 592                                            _buf, sizeof(_buf));
 593                 wpa_config_write_reg_string(hk, "device_type", buf);
 594         }
 595         wpa_config_write_reg_string(hk, "config_methods",
 596                                     config->config_methods);
 597         if (WPA_GET_BE32(config->os_version)) {
 598                 char vbuf[10];
 599                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 600                             WPA_GET_BE32(config->os_version));
 601                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 602         }
 603         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 604                                    config->wps_cred_processing, 0);
 605 #endif /* CONFIG_WPS */
 606 #ifdef CONFIG_P2P
 607         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 608                                     config->p2p_ssid_postfix);
 609         wpa_config_write_reg_dword(hk, TEXT("p2p_group_idle"),
 610                                    config->p2p_group_idle, 0);
 611 #endif /* CONFIG_P2P */
 612
 613         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 614                                    config->bss_max_count,
 615                                    DEFAULT_BSS_MAX_COUNT);
 616         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 617                                    config->filter_ssids, 0);
 618         wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
 619                                    config->max_num_sta, DEFAULT_MAX_NUM_STA);
 620         wpa_config_write_reg_dword(hk, TEXT("disassoc_low_ack"),
 621                                    config->disassoc_low_ack, 0);
 622
 623         wpa_config_write_reg_dword(hk, TEXT("okc"), config->okc, 0);
 624         wpa_config_write_reg_dword(hk, TEXT("pmf"), config->pmf, 0);
 625
 626         return 0;
 627 }
 628
 629
 630 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 631 {
 632         HKEY nhk;
 633         int i, errors = 0;
 634         LONG ret;
 635
 636         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 637         if (ret != ERROR_SUCCESS) {
 638                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 639                            "' for subkey deletion: error 0x%x (%d)", key,
 640                            (unsigned int) ret, (int) GetLastError());
 641                 return 0;
 642         }
 643
 644         for (i = 0; ; i++) {
 645                 TCHAR name[255];
 646                 DWORD namelen;
 647
 648                 namelen = 255;
 649                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 650                                    NULL);
 651
 652                 if (ret == ERROR_NO_MORE_ITEMS)
 653                         break;
 654
 655                 if (ret != ERROR_SUCCESS) {
 656                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 657                                    (unsigned int) ret, (int) GetLastError());
 658                         break;
 659                 }
 660
 661                 if (namelen >= 255)
 662                         namelen = 255 - 1;
 663                 name[namelen] = TEXT('\0');
 664
 665                 ret = RegDeleteKey(nhk, name);
 666                 if (ret != ERROR_SUCCESS) {
 667                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 668                                    (unsigned int) ret, (int) GetLastError());
 669                         errors++;
 670                 }
 671         }
 672
 673         RegCloseKey(nhk);
 674
 675         return errors ? -1 : 0;
 676 }
 677
 678
 679 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 680 {
 681         char *value = wpa_config_get(ssid, field);
 682         if (value == NULL)
 683                 return;
 684         wpa_config_write_reg_string(hk, field, value);
 685         os_free(value);
 686 }
 687
 688
 689 static void write_int(HKEY hk, const char *field, int value, int def)
 690 {
 691         char val[20];
 692         if (value == def)
 693                 return;
 694         os_snprintf(val, sizeof(val), "%d", value);
 695         wpa_config_write_reg_string(hk, field, val);
 696 }
 697
 698
 699 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 700 {
 701         char *value = wpa_config_get(ssid, "bssid");
 702         if (value == NULL)
 703                 return;
 704         wpa_config_write_reg_string(hk, "bssid", value);
 705         os_free(value);
 706 }
 707
 708
 709 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 710 {
 711         char *value = wpa_config_get(ssid, "psk");
 712         if (value == NULL)
 713                 return;
 714         wpa_config_write_reg_string(hk, "psk", value);
 715         os_free(value);
 716 }
 717
 718
 719 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 720 {
 721         char *value;
 722
 723         if (ssid->proto == DEFAULT_PROTO)
 724                 return;
 725
 726         value = wpa_config_get(ssid, "proto");
 727         if (value == NULL)
 728                 return;
 729         if (value[0])
 730                 wpa_config_write_reg_string(hk, "proto", value);
 731         os_free(value);
 732 }
 733
 734
 735 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 736 {
 737         char *value;
 738
 739         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 740                 return;
 741
 742         value = wpa_config_get(ssid, "key_mgmt");
 743         if (value == NULL)
 744                 return;
 745         if (value[0])
 746                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 747         os_free(value);
 748 }
 749
 750
 751 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 752 {
 753         char *value;
 754
 755         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 756                 return;
 757
 758         value = wpa_config_get(ssid, "pairwise");
 759         if (value == NULL)
 760                 return;
 761         if (value[0])
 762                 wpa_config_write_reg_string(hk, "pairwise", value);
 763         os_free(value);
 764 }
 765
 766
 767 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 768 {
 769         char *value;
 770
 771         if (ssid->group_cipher == DEFAULT_GROUP)
 772                 return;
 773
 774         value = wpa_config_get(ssid, "group");
 775         if (value == NULL)
 776                 return;
 777         if (value[0])
 778                 wpa_config_write_reg_string(hk, "group", value);
 779         os_free(value);
 780 }
 781
 782
 783 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 784 {
 785         char *value;
 786
 787         if (ssid->auth_alg == 0)
 788                 return;
 789
 790         value = wpa_config_get(ssid, "auth_alg");
 791         if (value == NULL)
 792                 return;
 793         if (value[0])
 794                 wpa_config_write_reg_string(hk, "auth_alg", value);
 795         os_free(value);
 796 }
 797
 798
 799 #ifdef IEEE8021X_EAPOL
 800 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 801 {
 802         char *value;
 803
 804         value = wpa_config_get(ssid, "eap");
 805         if (value == NULL)
 806                 return;
 807
 808         if (value[0])
 809                 wpa_config_write_reg_string(hk, "eap", value);
 810         os_free(value);
 811 }
 812 #endif /* IEEE8021X_EAPOL */
 813
 814
 815 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 816 {
 817         char field[20], *value;
 818
 819         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 820         value = wpa_config_get(ssid, field);
 821         if (value) {
 822                 wpa_config_write_reg_string(hk, field, value);
 823                 os_free(value);
 824         }
 825 }
 826
 827
 828 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 829 {
 830         int i, errors = 0;
 831         HKEY nhk, netw;
 832         LONG ret;
 833         TCHAR name[5];
 834
 835         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 836         if (ret != ERROR_SUCCESS) {
 837                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 838                            "for subkey addition: error 0x%x (%d)",
 839                            (unsigned int) ret, (int) GetLastError());
 840                 return 0;
 841         }
 842
 843 #ifdef UNICODE
 844         wsprintf(name, L"%04d", id);
 845 #else /* UNICODE */
 846         os_snprintf(name, sizeof(name), "%04d", id);
 847 #endif /* UNICODE */
 848         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 849                              NULL);
 850         RegCloseKey(nhk);
 851         if (ret != ERROR_SUCCESS) {
 852                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 853                            " error 0x%x (%d)",
 854                            name, (unsigned int) ret, (int) GetLastError());
 855                 return -1;
 856         }
 857
 858 #define STR(t) write_str(netw, #t, ssid)
 859 #define INT(t) write_int(netw, #t, ssid->t, 0)
 860 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 861 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 862 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 863
 864         STR(ssid);
 865         INT(scan_ssid);
 866         write_bssid(netw, ssid);
 867         write_psk(netw, ssid);
 868         write_proto(netw, ssid);
 869         write_key_mgmt(netw, ssid);
 870         write_pairwise(netw, ssid);
 871         write_group(netw, ssid);
 872         write_auth_alg(netw, ssid);
 873 #ifdef IEEE8021X_EAPOL
 874         write_eap(netw, ssid);
 875         STR(identity);
 876         STR(anonymous_identity);
 877         STR(password);
 878         STR(ca_cert);
 879         STR(ca_path);
 880         STR(client_cert);
 881         STR(private_key);
 882         STR(private_key_passwd);
 883         STR(dh_file);
 884         STR(subject_match);
 885         STR(altsubject_match);
 886         STR(ca_cert2);
 887         STR(ca_path2);
 888         STR(client_cert2);
 889         STR(private_key2);
 890         STR(private_key2_passwd);
 891         STR(dh_file2);
 892         STR(subject_match2);
 893         STR(altsubject_match2);
 894         STR(phase1);
 895         STR(phase2);
 896         STR(pcsc);
 897         STR(pin);
 898         STR(engine_id);
 899         STR(key_id);
 900         STR(cert_id);
 901         STR(ca_cert_id);
 902         STR(key2_id);
 903         STR(pin2);
 904         STR(engine2_id);
 905         STR(cert2_id);
 906         STR(ca_cert2_id);
 907         INTe(engine);
 908         INTe(engine2);
 909         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 910 #endif /* IEEE8021X_EAPOL */
 911         for (i = 0; i < 4; i++)
 912                 write_wep_key(netw, i, ssid);
 913         INT(wep_tx_keyidx);
 914         INT(priority);
 915 #ifdef IEEE8021X_EAPOL
 916         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 917         STR(pac_file);
 918         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 919 #endif /* IEEE8021X_EAPOL */
 920         INT(mode);
 921         write_int(netw, "proactive_key_caching", ssid->proactive_key_caching,
 922                   -1);
 923         INT(disabled);
 924         INT(peerkey);
 925 #ifdef CONFIG_IEEE80211W
 926         write_int(netw, "ieee80211w", ssid->ieee80211w,
 927                   MGMT_FRAME_PROTECTION_DEFAULT);
 928 #endif /* CONFIG_IEEE80211W */
 929         STR(id_str);
 930
 931 #undef STR
 932 #undef INT
 933 #undef INT_DEF
 934
 935         RegCloseKey(netw);
 936
 937         return errors ? -1 : 0;
 938 }
 939
 940
 941 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 942 {
 943         HKEY bhk;
 944         LONG ret;
 945         TCHAR *name;
 946
 947         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 948                              &bhk, NULL);
 949         if (ret != ERROR_SUCCESS) {
 950                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 951                            "error 0x%x (%d)",
 952                            (unsigned int) ret, (int) GetLastError());
 953                 return -1;
 954         }
 955
 956         name = wpa_strdup_tchar(blob->name);
 957         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 958                             blob->len);
 959         if (ret != ERROR_SUCCESS) {
 960                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 961                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 962                            (int) GetLastError());
 963                 RegCloseKey(bhk);
 964                 os_free(name);
 965                 return -1;
 966         }
 967         os_free(name);
 968
 969         RegCloseKey(bhk);
 970
 971         return 0;
 972 }
 973
 974
 975 int wpa_config_write(const char *name, struct wpa_config *config)
 976 {
 977         TCHAR buf[256];
 978         HKEY hk;
 979         LONG ret;
 980         int errors = 0;
 981         struct wpa_ssid *ssid;
 982         struct wpa_config_blob *blob;
 983         int id;
 984
 985         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 986
 987 #ifdef UNICODE
 988         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 989 #else /* UNICODE */
 990         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 991 #endif /* UNICODE */
 992
 993         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 994         if (ret != ERROR_SUCCESS) {
 995                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 996                            "configuration registry %s: error %d", buf,
 997                            (int) GetLastError());
 998                 return -1;
 999         }
1000
1001         if (wpa_config_write_global(config, hk)) {
1002                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
1003                            "data");
1004                 errors++;
1005         }
1006
1007         wpa_config_delete_subkeys(hk, TEXT("networks"));
1008         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
1009                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1010                         continue; /* do not save temporary WPS networks */
1011                 if (wpa_config_write_network(hk, ssid, id))
1012                         errors++;
1013         }
1014
1015         RegDeleteKey(hk, TEXT("blobs"));
1016         for (blob = config->blobs; blob; blob = blob->next) {
1017                 if (wpa_config_write_blob(hk, blob))
1018                         errors++;
1019         }
1020
1021         RegCloseKey(hk);
1022
1023         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1024                    name, errors ? "un" : "");
1025         return errors ? -1 : 0;
1026 }