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, struct wpa_config *cfgp)
 438 {
 439         TCHAR buf[256];
 440         int errors = 0;
 441         struct wpa_config *config;
 442         HKEY hk;
 443         LONG ret;
 444
 445         if (name == NULL)
 446                 return NULL;
 447         if (cfgp)
 448                 config = cfgp;
 449         else
 450                 config = wpa_config_alloc_empty(NULL, NULL);
 451         if (config == NULL)
 452                 return NULL;
 453         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 454
 455 #ifdef UNICODE
 456         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 457 #else /* UNICODE */
 458         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 459 #endif /* UNICODE */
 460
 461         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 462         if (ret != ERROR_SUCCESS) {
 463                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 464                            "configuration registry HKLM\\" TSTR, buf);
 465                 os_free(config);
 466                 return NULL;
 467         }
 468
 469         if (wpa_config_read_global(config, hk))
 470                 errors++;
 471
 472         if (wpa_config_read_networks(config, hk))
 473                 errors++;
 474
 475         if (wpa_config_read_blobs(config, hk))
 476                 errors++;
 477
 478         wpa_config_debug_dump_networks(config);
 479
 480         RegCloseKey(hk);
 481
 482         if (errors) {
 483                 wpa_config_free(config);
 484                 config = NULL;
 485         }
 486
 487         return config;
 488 }
 489
 490
 491 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 492                                       int def)
 493 {
 494         LONG ret;
 495         DWORD _val = val;
 496
 497         if (val == def) {
 498                 RegDeleteValue(hk, name);
 499                 return 0;
 500         }
 501
 502         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 503                             sizeof(_val));
 504         if (ret != ERROR_SUCCESS) {
 505                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 506                            name, val, (int) GetLastError());
 507                 return -1;
 508         }
 509
 510         return 0;
 511 }
 512
 513
 514 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 515                                        const char *val)
 516 {
 517         LONG ret;
 518         TCHAR *_name, *_val;
 519
 520         _name = wpa_strdup_tchar(name);
 521         if (_name == NULL)
 522                 return -1;
 523
 524         if (val == NULL) {
 525                 RegDeleteValue(hk, _name);
 526                 os_free(_name);
 527                 return 0;
 528         }
 529
 530         _val = wpa_strdup_tchar(val);
 531         if (_val == NULL) {
 532                 os_free(_name);
 533                 return -1;
 534         }
 535         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 536                             (os_strlen(val) + 1) * sizeof(TCHAR));
 537         if (ret != ERROR_SUCCESS) {
 538                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 539                            "error %d", name, val, (int) GetLastError());
 540                 os_free(_name);
 541                 os_free(_val);
 542                 return -1;
 543         }
 544
 545         os_free(_name);
 546         os_free(_val);
 547         return 0;
 548 }
 549
 550
 551 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 552 {
 553 #ifdef CONFIG_CTRL_IFACE
 554         wpa_config_write_reg_string(hk, "ctrl_interface",
 555                                     config->ctrl_interface);
 556 #endif /* CONFIG_CTRL_IFACE */
 557
 558         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 559                                    config->eapol_version,
 560                                    DEFAULT_EAPOL_VERSION);
 561         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 562                                    DEFAULT_AP_SCAN);
 563         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 564                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 565         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 566                                    config->dot11RSNAConfigPMKLifetime, 0);
 567         wpa_config_write_reg_dword(hk,
 568                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 569                                    config->dot11RSNAConfigPMKReauthThreshold,
 570                                    0);
 571         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 572                                    config->dot11RSNAConfigSATimeout, 0);
 573         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 574                                    config->update_config,
 575                                    0);
 576 #ifdef CONFIG_WPS
 577         if (!is_nil_uuid(config->uuid)) {
 578                 char buf[40];
 579                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 580                 wpa_config_write_reg_string(hk, "uuid", buf);
 581         }
 582         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 583         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 584         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 585         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 586         wpa_config_write_reg_string(hk, "serial_number",
 587                                     config->serial_number);
 588         {
 589                 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
 590                 buf = wps_dev_type_bin2str(config->device_type,
 591                                            _buf, sizeof(_buf));
 592                 wpa_config_write_reg_string(hk, "device_type", buf);
 593         }
 594         wpa_config_write_reg_string(hk, "config_methods",
 595                                     config->config_methods);
 596         if (WPA_GET_BE32(config->os_version)) {
 597                 char vbuf[10];
 598                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 599                             WPA_GET_BE32(config->os_version));
 600                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 601         }
 602         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 603                                    config->wps_cred_processing, 0);
 604 #endif /* CONFIG_WPS */
 605 #ifdef CONFIG_P2P
 606         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 607                                     config->p2p_ssid_postfix);
 608         wpa_config_write_reg_dword(hk, TEXT("p2p_group_idle"),
 609                                    config->p2p_group_idle, 0);
 610 #endif /* CONFIG_P2P */
 611
 612         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 613                                    config->bss_max_count,
 614                                    DEFAULT_BSS_MAX_COUNT);
 615         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 616                                    config->filter_ssids, 0);
 617         wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
 618                                    config->max_num_sta, DEFAULT_MAX_NUM_STA);
 619         wpa_config_write_reg_dword(hk, TEXT("disassoc_low_ack"),
 620                                    config->disassoc_low_ack, 0);
 621
 622         wpa_config_write_reg_dword(hk, TEXT("okc"), config->okc, 0);
 623         wpa_config_write_reg_dword(hk, TEXT("pmf"), config->pmf, 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         write_int(netw, "proactive_key_caching", ssid->proactive_key_caching,
 921                   -1);
 922         INT(disabled);
 923         INT(peerkey);
 924 #ifdef CONFIG_IEEE80211W
 925         write_int(netw, "ieee80211w", ssid->ieee80211w,
 926                   MGMT_FRAME_PROTECTION_DEFAULT);
 927 #endif /* CONFIG_IEEE80211W */
 928         STR(id_str);
 929
 930 #undef STR
 931 #undef INT
 932 #undef INT_DEF
 933
 934         RegCloseKey(netw);
 935
 936         return errors ? -1 : 0;
 937 }
 938
 939
 940 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 941 {
 942         HKEY bhk;
 943         LONG ret;
 944         TCHAR *name;
 945
 946         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 947                              &bhk, NULL);
 948         if (ret != ERROR_SUCCESS) {
 949                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 950                            "error 0x%x (%d)",
 951                            (unsigned int) ret, (int) GetLastError());
 952                 return -1;
 953         }
 954
 955         name = wpa_strdup_tchar(blob->name);
 956         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 957                             blob->len);
 958         if (ret != ERROR_SUCCESS) {
 959                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 960                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 961                            (int) GetLastError());
 962                 RegCloseKey(bhk);
 963                 os_free(name);
 964                 return -1;
 965         }
 966         os_free(name);
 967
 968         RegCloseKey(bhk);
 969
 970         return 0;
 971 }
 972
 973
 974 int wpa_config_write(const char *name, struct wpa_config *config)
 975 {
 976         TCHAR buf[256];
 977         HKEY hk;
 978         LONG ret;
 979         int errors = 0;
 980         struct wpa_ssid *ssid;
 981         struct wpa_config_blob *blob;
 982         int id;
 983
 984         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 985
 986 #ifdef UNICODE
 987         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 988 #else /* UNICODE */
 989         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 990 #endif /* UNICODE */
 991
 992         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 993         if (ret != ERROR_SUCCESS) {
 994                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 995                            "configuration registry %s: error %d", buf,
 996                            (int) GetLastError());
 997                 return -1;
 998         }
 999
1000         if (wpa_config_write_global(config, hk)) {
1001                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
1002                            "data");
1003                 errors++;
1004         }
1005
1006         wpa_config_delete_subkeys(hk, TEXT("networks"));
1007         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
1008                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1009                         continue; /* do not save temporary WPS networks */
1010                 if (wpa_config_write_network(hk, ssid, id))
1011                         errors++;
1012         }
1013
1014         RegDeleteKey(hk, TEXT("blobs"));
1015         for (blob = config->blobs; blob; blob = blob->next) {
1016                 if (wpa_config_write_blob(hk, blob))
1017                         errors++;
1018         }
1019
1020         RegCloseKey(hk);
1021
1022         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1023                    name, errors ? "un" : "");
1024         return errors ? -1 : 0;
1025 }