wpa_supplicant/config_winreg.c

   1 /*
   2  * WPA Supplicant / Configuration backend: Windows registry
   3  * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  *
   8  * This file implements a configuration backend for Windows registry. All the
   9  * configuration information is stored in the registry and the format for
  10  * network configuration fields is same as described in the sample
  11  * configuration file, wpa_supplicant.conf.
  12  *
  13  * Configuration data is in
  14  * \a HKEY_LOCAL_MACHINE\\SOFTWARE\\%wpa_supplicant\\configs
  15  * key. Each configuration profile has its own key under this. In terms of text
  16  * files, each profile would map to a separate text file with possibly multiple
  17  * networks. Under each profile, there is a networks key that lists all
  18  * networks as a subkey. Each network has set of values in the same way as
  19  * network block in the configuration file. In addition, blobs subkey has
  20  * possible blobs as values.
  21  *
  22  * Example network configuration block:
  23  * \verbatim
  24 HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
  25    ssid="example"
  26    key_mgmt=WPA-PSK
  27 \endverbatim
  28  */
  29
  30 #include "includes.h"
  31
  32 #include "common.h"
  33 #include "uuid.h"
  34 #include "config.h"
  35
  36 #ifndef WPA_KEY_ROOT
  37 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
  38 #endif
  39 #ifndef WPA_KEY_PREFIX
  40 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
  41 #endif
  42
  43 #ifdef UNICODE
  44 #define TSTR "%S"
  45 #else /* UNICODE */
  46 #define TSTR "%s"
  47 #endif /* UNICODE */
  48
  49
  50 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
  51 {
  52         struct wpa_config_blob *blob;
  53         int errors = 0;
  54         HKEY bhk;
  55         LONG ret;
  56         DWORD i;
  57
  58         ret = RegOpenKeyEx(hk, TEXT("blobs"), 0, KEY_QUERY_VALUE, &bhk);
  59         if (ret != ERROR_SUCCESS) {
  60                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
  61                            "blobs key");
  62                 return 0; /* assume no blobs */
  63         }
  64
  65         for (i = 0; ; i++) {
  66 #define TNAMELEN 255
  67                 TCHAR name[TNAMELEN];
  68                 char data[4096];
  69                 DWORD namelen, datalen, type;
  70
  71                 namelen = TNAMELEN;
  72                 datalen = sizeof(data);
  73                 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
  74                                    (LPBYTE) data, &datalen);
  75
  76                 if (ret == ERROR_NO_MORE_ITEMS)
  77                         break;
  78
  79                 if (ret != ERROR_SUCCESS) {
  80                         wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
  81                                    (unsigned int) ret);
  82                         break;
  83                 }
  84
  85                 if (namelen >= TNAMELEN)
  86                         namelen = TNAMELEN - 1;
  87                 name[namelen] = TEXT('\0');
  88                 wpa_unicode2ascii_inplace(name);
  89
  90                 if (datalen >= sizeof(data))
  91                         datalen = sizeof(data) - 1;
  92
  93                 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
  94                            (int) i, name, (int) datalen);
  95
  96                 blob = os_zalloc(sizeof(*blob));
  97                 if (blob == NULL) {
  98                         errors++;
  99                         break;
 100                 }
 101                 blob->name = os_strdup((char *) name);
 102                 blob->data = os_malloc(datalen);
 103                 if (blob->name == NULL || blob->data == NULL) {
 104                         wpa_config_free_blob(blob);
 105                         errors++;
 106                         break;
 107                 }
 108                 os_memcpy(blob->data, data, datalen);
 109                 blob->len = datalen;
 110
 111                 wpa_config_set_blob(config, blob);
 112         }
 113
 114         RegCloseKey(bhk);
 115
 116         return errors ? -1 : 0;
 117 }
 118
 119
 120 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
 121 {
 122         DWORD val, buflen;
 123         LONG ret;
 124
 125         buflen = sizeof(val);
 126         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
 127         if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
 128                 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
 129                 *_val = val;
 130                 return 0;
 131         }
 132
 133         return -1;
 134 }
 135
 136
 137 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
 138 {
 139         DWORD buflen;
 140         LONG ret;
 141         TCHAR *val;
 142
 143         buflen = 0;
 144         ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
 145         if (ret != ERROR_SUCCESS)
 146                 return NULL;
 147         val = os_malloc(buflen);
 148         if (val == NULL)
 149                 return NULL;
 150
 151         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
 152         if (ret != ERROR_SUCCESS) {
 153                 os_free(val);
 154                 return NULL;
 155         }
 156
 157         wpa_unicode2ascii_inplace(val);
 158         wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
 159         return (char *) val;
 160 }
 161
 162
 163 #ifdef CONFIG_WPS
 164 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
 165 {
 166         char *str;
 167         int ret = 0;
 168
 169         str = wpa_config_read_reg_string(hk, TEXT("uuid"));
 170         if (str == NULL)
 171                 return 0;
 172
 173         if (uuid_str2bin(str, config->uuid))
 174                 ret = -1;
 175
 176         os_free(str);
 177
 178         return ret;
 179 }
 180
 181
 182 static int wpa_config_read_global_os_version(struct wpa_config *config,
 183                                              HKEY hk)
 184 {
 185         char *str;
 186         int ret = 0;
 187
 188         str = wpa_config_read_reg_string(hk, TEXT("os_version"));
 189         if (str == NULL)
 190                 return 0;
 191
 192         if (hexstr2bin(str, config->os_version, 4))
 193                 ret = -1;
 194
 195         os_free(str);
 196
 197         return ret;
 198 }
 199 #endif /* CONFIG_WPS */
 200
 201
 202 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 203 {
 204         int errors = 0;
 205         int val;
 206
 207         wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
 208         wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
 209                                   &config->fast_reauth);
 210         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 211                                   (int *) &config->dot11RSNAConfigPMKLifetime);
 212         wpa_config_read_reg_dword(hk,
 213                                   TEXT("dot11RSNAConfigPMKReauthThreshold"),
 214                                   (int *)
 215                                   &config->dot11RSNAConfigPMKReauthThreshold);
 216         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 217                                   (int *) &config->dot11RSNAConfigSATimeout);
 218         wpa_config_read_reg_dword(hk, TEXT("update_config"),
 219                                   &config->update_config);
 220
 221         if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
 222                                       &config->eapol_version) == 0) {
 223                 if (config->eapol_version < 1 ||
 224                     config->eapol_version > 2) {
 225                         wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
 226                                    config->eapol_version);
 227                         errors++;
 228                 }
 229         }
 230
 231         config->ctrl_interface = wpa_config_read_reg_string(
 232                 hk, TEXT("ctrl_interface"));
 233
 234 #ifdef CONFIG_WPS
 235         if (wpa_config_read_global_uuid(config, hk))
 236                 errors++;
 237         config->device_name = wpa_config_read_reg_string(
 238                 hk, TEXT("device_name"));
 239         config->manufacturer = wpa_config_read_reg_string(
 240                 hk, TEXT("manufacturer"));
 241         config->model_name = wpa_config_read_reg_string(
 242                 hk, TEXT("model_name"));
 243         config->serial_number = wpa_config_read_reg_string(
 244                 hk, TEXT("serial_number"));
 245         {
 246                 char *t = wpa_config_read_reg_string(
 247                         hk, TEXT("device_type"));
 248                 if (t && wps_dev_type_str2bin(t, config->device_type))
 249                         errors++;
 250                 os_free(t);
 251         }
 252         config->config_methods = wpa_config_read_reg_string(
 253                 hk, TEXT("config_methods"));
 254         if (wpa_config_read_global_os_version(config, hk))
 255                 errors++;
 256         wpa_config_read_reg_dword(hk, TEXT("wps_cred_processing"),
 257                                   &config->wps_cred_processing);
 258 #endif /* CONFIG_WPS */
 259 #ifdef CONFIG_P2P
 260         config->p2p_ssid_postfix = wpa_config_read_reg_string(
 261                 hk, TEXT("p2p_ssid_postfix"));
 262         wpa_config_read_reg_dword(hk, TEXT("p2p_group_idle"),
 263                                   (int *) &config->p2p_group_idle);
 264 #endif /* CONFIG_P2P */
 265
 266         wpa_config_read_reg_dword(hk, TEXT("bss_max_count"),
 267                                   (int *) &config->bss_max_count);
 268         wpa_config_read_reg_dword(hk, TEXT("filter_ssids"),
 269                                   &config->filter_ssids);
 270         wpa_config_read_reg_dword(hk, TEXT("max_num_sta"),
 271                                   (int *) &config->max_num_sta);
 272         wpa_config_read_reg_dword(hk, TEXT("disassoc_low_ack"),
 273                                   (int *) &config->disassoc_low_ack);
 274
 275         wpa_config_read_reg_dword(hk, TEXT("okc"), &config->okc);
 276         wpa_config_read_reg_dword(hk, TEXT("pmf"), &val);
 277         config->pmf = val;
 278
 279         return errors ? -1 : 0;
 280 }
 281
 282
 283 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 284                                                  int id)
 285 {
 286         HKEY nhk;
 287         LONG ret;
 288         DWORD i;
 289         struct wpa_ssid *ssid;
 290         int errors = 0;
 291
 292         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 293         if (ret != ERROR_SUCCESS) {
 294                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 295                            "network '" TSTR "'", netw);
 296                 return NULL;
 297         }
 298
 299         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 300         ssid = os_zalloc(sizeof(*ssid));
 301         if (ssid == NULL) {
 302                 RegCloseKey(nhk);
 303                 return NULL;
 304         }
 305         ssid->id = id;
 306
 307         wpa_config_set_network_defaults(ssid);
 308
 309         for (i = 0; ; i++) {
 310                 TCHAR name[255], data[1024];
 311                 DWORD namelen, datalen, type;
 312
 313                 namelen = 255;
 314                 datalen = sizeof(data);
 315                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 316                                    (LPBYTE) data, &datalen);
 317
 318                 if (ret == ERROR_NO_MORE_ITEMS)
 319                         break;
 320
 321                 if (ret != ERROR_SUCCESS) {
 322                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 323                                    (unsigned int) ret);
 324                         break;
 325                 }
 326
 327                 if (namelen >= 255)
 328                         namelen = 255 - 1;
 329                 name[namelen] = TEXT('\0');
 330
 331                 if (datalen >= 1024)
 332                         datalen = 1024 - 1;
 333                 data[datalen] = TEXT('\0');
 334
 335                 wpa_unicode2ascii_inplace(name);
 336                 wpa_unicode2ascii_inplace(data);
 337                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 338                         errors++;
 339         }
 340
 341         RegCloseKey(nhk);
 342
 343         if (ssid->passphrase) {
 344                 if (ssid->psk_set) {
 345                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 346                                    "configured for network '" TSTR "'.", netw);
 347                         errors++;
 348                 }
 349                 wpa_config_update_psk(ssid);
 350         }
 351
 352         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 353             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 354             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 355                 /* Group cipher cannot be stronger than the pairwise cipher. */
 356                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 357                            "list since it was not allowed for pairwise "
 358                            "cipher for network '" TSTR "'.", netw);
 359                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 360         }
 361
 362         if (errors) {
 363                 wpa_config_free_ssid(ssid);
 364                 ssid = NULL;
 365         }
 366
 367         return ssid;
 368 }
 369
 370
 371 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 372 {
 373         HKEY nhk;
 374         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 375         int errors = 0;
 376         LONG ret;
 377         DWORD i;
 378
 379         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 380                            &nhk);
 381         if (ret != ERROR_SUCCESS) {
 382                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 383                            "registry key");
 384                 return -1;
 385         }
 386
 387         for (i = 0; ; i++) {
 388                 TCHAR name[255];
 389                 DWORD namelen;
 390
 391                 namelen = 255;
 392                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 393                                    NULL);
 394
 395                 if (ret == ERROR_NO_MORE_ITEMS)
 396                         break;
 397
 398                 if (ret != ERROR_SUCCESS) {
 399                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 400                                    (unsigned int) ret);
 401                         break;
 402                 }
 403
 404                 if (namelen >= 255)
 405                         namelen = 255 - 1;
 406                 name[namelen] = '\0';
 407
 408                 ssid = wpa_config_read_network(nhk, name, i);
 409                 if (ssid == NULL) {
 410                         wpa_printf(MSG_ERROR, "Failed to parse network "
 411                                    "profile '%s'.", name);
 412                         errors++;
 413                         continue;
 414                 }
 415                 if (head == NULL) {
 416                         head = tail = ssid;
 417                 } else {
 418                         tail->next = ssid;
 419                         tail = ssid;
 420                 }
 421                 if (wpa_config_add_prio_network(config, ssid)) {
 422                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 423                                    "'%s' to priority list.", name);
 424                         errors++;
 425                         continue;
 426                 }
 427         }
 428
 429         RegCloseKey(nhk);
 430
 431         config->ssid = head;
 432
 433         return errors ? -1 : 0;
 434 }
 435
 436
 437 struct wpa_config * wpa_config_read(const char *name)
 438 {
 439         TCHAR buf[256];
 440         int errors = 0;
 441         struct wpa_config *config;
 442         HKEY hk;
 443         LONG ret;
 444
 445         config = wpa_config_alloc_empty(NULL, NULL);
 446         if (config == NULL)
 447                 return NULL;
 448         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 449
 450 #ifdef UNICODE
 451         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 452 #else /* UNICODE */
 453         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 454 #endif /* UNICODE */
 455
 456         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 457         if (ret != ERROR_SUCCESS) {
 458                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 459                            "configuration registry HKLM\\" TSTR, buf);
 460                 os_free(config);
 461                 return NULL;
 462         }
 463
 464         if (wpa_config_read_global(config, hk))
 465                 errors++;
 466
 467         if (wpa_config_read_networks(config, hk))
 468                 errors++;
 469
 470         if (wpa_config_read_blobs(config, hk))
 471                 errors++;
 472
 473         wpa_config_debug_dump_networks(config);
 474
 475         RegCloseKey(hk);
 476
 477         if (errors) {
 478                 wpa_config_free(config);
 479                 config = NULL;
 480         }
 481
 482         return config;
 483 }
 484
 485
 486 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 487                                       int def)
 488 {
 489         LONG ret;
 490         DWORD _val = val;
 491
 492         if (val == def) {
 493                 RegDeleteValue(hk, name);
 494                 return 0;
 495         }
 496
 497         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 498                             sizeof(_val));
 499         if (ret != ERROR_SUCCESS) {
 500                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 501                            name, val, (int) GetLastError());
 502                 return -1;
 503         }
 504
 505         return 0;
 506 }
 507
 508
 509 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 510                                        const char *val)
 511 {
 512         LONG ret;
 513         TCHAR *_name, *_val;
 514
 515         _name = wpa_strdup_tchar(name);
 516         if (_name == NULL)
 517                 return -1;
 518
 519         if (val == NULL) {
 520                 RegDeleteValue(hk, _name);
 521                 os_free(_name);
 522                 return 0;
 523         }
 524
 525         _val = wpa_strdup_tchar(val);
 526         if (_val == NULL) {
 527                 os_free(_name);
 528                 return -1;
 529         }
 530         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 531                             (os_strlen(val) + 1) * sizeof(TCHAR));
 532         if (ret != ERROR_SUCCESS) {
 533                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 534                            "error %d", name, val, (int) GetLastError());
 535                 os_free(_name);
 536                 os_free(_val);
 537                 return -1;
 538         }
 539
 540         os_free(_name);
 541         os_free(_val);
 542         return 0;
 543 }
 544
 545
 546 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 547 {
 548 #ifdef CONFIG_CTRL_IFACE
 549         wpa_config_write_reg_string(hk, "ctrl_interface",
 550                                     config->ctrl_interface);
 551 #endif /* CONFIG_CTRL_IFACE */
 552
 553         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 554                                    config->eapol_version,
 555                                    DEFAULT_EAPOL_VERSION);
 556         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 557                                    DEFAULT_AP_SCAN);
 558         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 559                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 560         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 561                                    config->dot11RSNAConfigPMKLifetime, 0);
 562         wpa_config_write_reg_dword(hk,
 563                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 564                                    config->dot11RSNAConfigPMKReauthThreshold,
 565                                    0);
 566         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 567                                    config->dot11RSNAConfigSATimeout, 0);
 568         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 569                                    config->update_config,
 570                                    0);
 571 #ifdef CONFIG_WPS
 572         if (!is_nil_uuid(config->uuid)) {
 573                 char buf[40];
 574                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 575                 wpa_config_write_reg_string(hk, "uuid", buf);
 576         }
 577         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 578         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 579         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 580         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 581         wpa_config_write_reg_string(hk, "serial_number",
 582                                     config->serial_number);
 583         {
 584                 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
 585                 buf = wps_dev_type_bin2str(config->device_type,
 586                                            _buf, sizeof(_buf));
 587                 wpa_config_write_reg_string(hk, "device_type", buf);
 588         }
 589         wpa_config_write_reg_string(hk, "config_methods",
 590                                     config->config_methods);
 591         if (WPA_GET_BE32(config->os_version)) {
 592                 char vbuf[10];
 593                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 594                             WPA_GET_BE32(config->os_version));
 595                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 596         }
 597         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 598                                    config->wps_cred_processing, 0);
 599 #endif /* CONFIG_WPS */
 600 #ifdef CONFIG_P2P
 601         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 602                                     config->p2p_ssid_postfix);
 603         wpa_config_write_reg_dword(hk, TEXT("p2p_group_idle"),
 604                                    config->p2p_group_idle, 0);
 605 #endif /* CONFIG_P2P */
 606
 607         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 608                                    config->bss_max_count,
 609                                    DEFAULT_BSS_MAX_COUNT);
 610         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 611                                    config->filter_ssids, 0);
 612         wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
 613                                    config->max_num_sta, DEFAULT_MAX_NUM_STA);
 614         wpa_config_write_reg_dword(hk, TEXT("disassoc_low_ack"),
 615                                    config->disassoc_low_ack, 0);
 616
 617         wpa_config_write_reg_dword(hk, TEXT("okc"), config->okc, 0);
 618         wpa_config_write_reg_dword(hk, TEXT("pmf"), config->pmf, 0);
 619
 620         return 0;
 621 }
 622
 623
 624 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 625 {
 626         HKEY nhk;
 627         int i, errors = 0;
 628         LONG ret;
 629
 630         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 631         if (ret != ERROR_SUCCESS) {
 632                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 633                            "' for subkey deletion: error 0x%x (%d)", key,
 634                            (unsigned int) ret, (int) GetLastError());
 635                 return 0;
 636         }
 637
 638         for (i = 0; ; i++) {
 639                 TCHAR name[255];
 640                 DWORD namelen;
 641
 642                 namelen = 255;
 643                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 644                                    NULL);
 645
 646                 if (ret == ERROR_NO_MORE_ITEMS)
 647                         break;
 648
 649                 if (ret != ERROR_SUCCESS) {
 650                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 651                                    (unsigned int) ret, (int) GetLastError());
 652                         break;
 653                 }
 654
 655                 if (namelen >= 255)
 656                         namelen = 255 - 1;
 657                 name[namelen] = TEXT('\0');
 658
 659                 ret = RegDeleteKey(nhk, name);
 660                 if (ret != ERROR_SUCCESS) {
 661                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 662                                    (unsigned int) ret, (int) GetLastError());
 663                         errors++;
 664                 }
 665         }
 666
 667         RegCloseKey(nhk);
 668
 669         return errors ? -1 : 0;
 670 }
 671
 672
 673 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 674 {
 675         char *value = wpa_config_get(ssid, field);
 676         if (value == NULL)
 677                 return;
 678         wpa_config_write_reg_string(hk, field, value);
 679         os_free(value);
 680 }
 681
 682
 683 static void write_int(HKEY hk, const char *field, int value, int def)
 684 {
 685         char val[20];
 686         if (value == def)
 687                 return;
 688         os_snprintf(val, sizeof(val), "%d", value);
 689         wpa_config_write_reg_string(hk, field, val);
 690 }
 691
 692
 693 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 694 {
 695         char *value = wpa_config_get(ssid, "bssid");
 696         if (value == NULL)
 697                 return;
 698         wpa_config_write_reg_string(hk, "bssid", value);
 699         os_free(value);
 700 }
 701
 702
 703 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 704 {
 705         char *value = wpa_config_get(ssid, "psk");
 706         if (value == NULL)
 707                 return;
 708         wpa_config_write_reg_string(hk, "psk", value);
 709         os_free(value);
 710 }
 711
 712
 713 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 714 {
 715         char *value;
 716
 717         if (ssid->proto == DEFAULT_PROTO)
 718                 return;
 719
 720         value = wpa_config_get(ssid, "proto");
 721         if (value == NULL)
 722                 return;
 723         if (value[0])
 724                 wpa_config_write_reg_string(hk, "proto", value);
 725         os_free(value);
 726 }
 727
 728
 729 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 730 {
 731         char *value;
 732
 733         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 734                 return;
 735
 736         value = wpa_config_get(ssid, "key_mgmt");
 737         if (value == NULL)
 738                 return;
 739         if (value[0])
 740                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 741         os_free(value);
 742 }
 743
 744
 745 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 746 {
 747         char *value;
 748
 749         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 750                 return;
 751
 752         value = wpa_config_get(ssid, "pairwise");
 753         if (value == NULL)
 754                 return;
 755         if (value[0])
 756                 wpa_config_write_reg_string(hk, "pairwise", value);
 757         os_free(value);
 758 }
 759
 760
 761 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 762 {
 763         char *value;
 764
 765         if (ssid->group_cipher == DEFAULT_GROUP)
 766                 return;
 767
 768         value = wpa_config_get(ssid, "group");
 769         if (value == NULL)
 770                 return;
 771         if (value[0])
 772                 wpa_config_write_reg_string(hk, "group", value);
 773         os_free(value);
 774 }
 775
 776
 777 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 778 {
 779         char *value;
 780
 781         if (ssid->auth_alg == 0)
 782                 return;
 783
 784         value = wpa_config_get(ssid, "auth_alg");
 785         if (value == NULL)
 786                 return;
 787         if (value[0])
 788                 wpa_config_write_reg_string(hk, "auth_alg", value);
 789         os_free(value);
 790 }
 791
 792
 793 #ifdef IEEE8021X_EAPOL
 794 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 795 {
 796         char *value;
 797
 798         value = wpa_config_get(ssid, "eap");
 799         if (value == NULL)
 800                 return;
 801
 802         if (value[0])
 803                 wpa_config_write_reg_string(hk, "eap", value);
 804         os_free(value);
 805 }
 806 #endif /* IEEE8021X_EAPOL */
 807
 808
 809 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 810 {
 811         char field[20], *value;
 812
 813         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 814         value = wpa_config_get(ssid, field);
 815         if (value) {
 816                 wpa_config_write_reg_string(hk, field, value);
 817                 os_free(value);
 818         }
 819 }
 820
 821
 822 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 823 {
 824         int i, errors = 0;
 825         HKEY nhk, netw;
 826         LONG ret;
 827         TCHAR name[5];
 828
 829         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 830         if (ret != ERROR_SUCCESS) {
 831                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 832                            "for subkey addition: error 0x%x (%d)",
 833                            (unsigned int) ret, (int) GetLastError());
 834                 return 0;
 835         }
 836
 837 #ifdef UNICODE
 838         wsprintf(name, L"%04d", id);
 839 #else /* UNICODE */
 840         os_snprintf(name, sizeof(name), "%04d", id);
 841 #endif /* UNICODE */
 842         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 843                              NULL);
 844         RegCloseKey(nhk);
 845         if (ret != ERROR_SUCCESS) {
 846                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 847                            " error 0x%x (%d)",
 848                            name, (unsigned int) ret, (int) GetLastError());
 849                 return -1;
 850         }
 851
 852 #define STR(t) write_str(netw, #t, ssid)
 853 #define INT(t) write_int(netw, #t, ssid->t, 0)
 854 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 855 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 856 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 857
 858         STR(ssid);
 859         INT(scan_ssid);
 860         write_bssid(netw, ssid);
 861         write_psk(netw, ssid);
 862         write_proto(netw, ssid);
 863         write_key_mgmt(netw, ssid);
 864         write_pairwise(netw, ssid);
 865         write_group(netw, ssid);
 866         write_auth_alg(netw, ssid);
 867 #ifdef IEEE8021X_EAPOL
 868         write_eap(netw, ssid);
 869         STR(identity);
 870         STR(anonymous_identity);
 871         STR(password);
 872         STR(ca_cert);
 873         STR(ca_path);
 874         STR(client_cert);
 875         STR(private_key);
 876         STR(private_key_passwd);
 877         STR(dh_file);
 878         STR(subject_match);
 879         STR(altsubject_match);
 880         STR(ca_cert2);
 881         STR(ca_path2);
 882         STR(client_cert2);
 883         STR(private_key2);
 884         STR(private_key2_passwd);
 885         STR(dh_file2);
 886         STR(subject_match2);
 887         STR(altsubject_match2);
 888         STR(phase1);
 889         STR(phase2);
 890         STR(pcsc);
 891         STR(pin);
 892         STR(engine_id);
 893         STR(key_id);
 894         STR(cert_id);
 895         STR(ca_cert_id);
 896         STR(key2_id);
 897         STR(pin2);
 898         STR(engine2_id);
 899         STR(cert2_id);
 900         STR(ca_cert2_id);
 901         INTe(engine);
 902         INTe(engine2);
 903         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 904 #endif /* IEEE8021X_EAPOL */
 905         for (i = 0; i < 4; i++)
 906                 write_wep_key(netw, i, ssid);
 907         INT(wep_tx_keyidx);
 908         INT(priority);
 909 #ifdef IEEE8021X_EAPOL
 910         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 911         STR(pac_file);
 912         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 913 #endif /* IEEE8021X_EAPOL */
 914         INT(mode);
 915         write_int(netw, "proactive_key_caching", ssid->proactive_key_caching,
 916                   -1);
 917         INT(disabled);
 918         INT(peerkey);
 919 #ifdef CONFIG_IEEE80211W
 920         write_int(netw, "ieee80211w", ssid->ieee80211w,
 921                   MGMT_FRAME_PROTECTION_DEFAULT);
 922 #endif /* CONFIG_IEEE80211W */
 923         STR(id_str);
 924
 925 #undef STR
 926 #undef INT
 927 #undef INT_DEF
 928
 929         RegCloseKey(netw);
 930
 931         return errors ? -1 : 0;
 932 }
 933
 934
 935 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 936 {
 937         HKEY bhk;
 938         LONG ret;
 939         TCHAR *name;
 940
 941         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 942                              &bhk, NULL);
 943         if (ret != ERROR_SUCCESS) {
 944                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 945                            "error 0x%x (%d)",
 946                            (unsigned int) ret, (int) GetLastError());
 947                 return -1;
 948         }
 949
 950         name = wpa_strdup_tchar(blob->name);
 951         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 952                             blob->len);
 953         if (ret != ERROR_SUCCESS) {
 954                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 955                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 956                            (int) GetLastError());
 957                 RegCloseKey(bhk);
 958                 os_free(name);
 959                 return -1;
 960         }
 961         os_free(name);
 962
 963         RegCloseKey(bhk);
 964
 965         return 0;
 966 }
 967
 968
 969 int wpa_config_write(const char *name, struct wpa_config *config)
 970 {
 971         TCHAR buf[256];
 972         HKEY hk;
 973         LONG ret;
 974         int errors = 0;
 975         struct wpa_ssid *ssid;
 976         struct wpa_config_blob *blob;
 977         int id;
 978
 979         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 980
 981 #ifdef UNICODE
 982         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 983 #else /* UNICODE */
 984         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 985 #endif /* UNICODE */
 986
 987         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 988         if (ret != ERROR_SUCCESS) {
 989                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 990                            "configuration registry %s: error %d", buf,
 991                            (int) GetLastError());
 992                 return -1;
 993         }
 994
 995         if (wpa_config_write_global(config, hk)) {
 996                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 997                            "data");
 998                 errors++;
 999         }
1000
1001         wpa_config_delete_subkeys(hk, TEXT("networks"));
1002         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
1003                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1004                         continue; /* do not save temporary WPS networks */
1005                 if (wpa_config_write_network(hk, ssid, id))
1006                         errors++;
1007         }
1008
1009         RegDeleteKey(hk, TEXT("blobs"));
1010         for (blob = config->blobs; blob; blob = blob->next) {
1011                 if (wpa_config_write_blob(hk, blob))
1012                         errors++;
1013         }
1014
1015         RegCloseKey(hk);
1016
1017         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1018                    name, errors ? "un" : "");
1019         return errors ? -1 : 0;
1020 }