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