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