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