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_memdup(data, datalen);
 103                 if (blob->name == NULL || blob->data == NULL) {
 104                         wpa_config_free_blob(blob);
 105                         errors++;
 106                         break;
 107                 }
 108                 blob->len = datalen;
 109
 110                 wpa_config_set_blob(config, blob);
 111         }
 112
 113         RegCloseKey(bhk);
 114
 115         return errors ? -1 : 0;
 116 }
 117
 118
 119 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
 120 {
 121         DWORD val, buflen;
 122         LONG ret;
 123
 124         buflen = sizeof(val);
 125         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
 126         if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
 127                 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
 128                 *_val = val;
 129                 return 0;
 130         }
 131
 132         return -1;
 133 }
 134
 135
 136 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
 137 {
 138         DWORD buflen;
 139         LONG ret;
 140         TCHAR *val;
 141
 142         buflen = 0;
 143         ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
 144         if (ret != ERROR_SUCCESS)
 145                 return NULL;
 146         val = os_malloc(buflen);
 147         if (val == NULL)
 148                 return NULL;
 149
 150         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
 151         if (ret != ERROR_SUCCESS) {
 152                 os_free(val);
 153                 return NULL;
 154         }
 155
 156         wpa_unicode2ascii_inplace(val);
 157         wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
 158         return (char *) val;
 159 }
 160
 161
 162 #ifdef CONFIG_WPS
 163 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
 164 {
 165         char *str;
 166         int ret = 0;
 167
 168         str = wpa_config_read_reg_string(hk, TEXT("uuid"));
 169         if (str == NULL)
 170                 return 0;
 171
 172         if (uuid_str2bin(str, config->uuid))
 173                 ret = -1;
 174
 175         os_free(str);
 176
 177         return ret;
 178 }
 179
 180
 181 static int wpa_config_read_global_os_version(struct wpa_config *config,
 182                                              HKEY hk)
 183 {
 184         char *str;
 185         int ret = 0;
 186
 187         str = wpa_config_read_reg_string(hk, TEXT("os_version"));
 188         if (str == NULL)
 189                 return 0;
 190
 191         if (hexstr2bin(str, config->os_version, 4))
 192                 ret = -1;
 193
 194         os_free(str);
 195
 196         return ret;
 197 }
 198 #endif /* CONFIG_WPS */
 199
 200
 201 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 202 {
 203         int errors = 0;
 204         int val;
 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         wpa_config_read_reg_dword(hk, TEXT("okc"), &config->okc);
 275         wpa_config_read_reg_dword(hk, TEXT("pmf"), &val);
 276         config->pmf = val;
 277
 278         return errors ? -1 : 0;
 279 }
 280
 281
 282 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 283                                                  int id)
 284 {
 285         HKEY nhk;
 286         LONG ret;
 287         DWORD i;
 288         struct wpa_ssid *ssid;
 289         int errors = 0;
 290
 291         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 292         if (ret != ERROR_SUCCESS) {
 293                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 294                            "network '" TSTR "'", netw);
 295                 return NULL;
 296         }
 297
 298         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 299         ssid = os_zalloc(sizeof(*ssid));
 300         if (ssid == NULL) {
 301                 RegCloseKey(nhk);
 302                 return NULL;
 303         }
 304         dl_list_init(&ssid->psk_list);
 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         wpa_config_write_reg_dword(hk, TEXT("external_sim"),
 626                                    config->external_sim, 0);
 627
 628         return 0;
 629 }
 630
 631
 632 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 633 {
 634         HKEY nhk;
 635         int i, errors = 0;
 636         LONG ret;
 637
 638         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 639         if (ret != ERROR_SUCCESS) {
 640                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 641                            "' for subkey deletion: error 0x%x (%d)", key,
 642                            (unsigned int) ret, (int) GetLastError());
 643                 return 0;
 644         }
 645
 646         for (i = 0; ; i++) {
 647                 TCHAR name[255];
 648                 DWORD namelen;
 649
 650                 namelen = 255;
 651                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 652                                    NULL);
 653
 654                 if (ret == ERROR_NO_MORE_ITEMS)
 655                         break;
 656
 657                 if (ret != ERROR_SUCCESS) {
 658                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 659                                    (unsigned int) ret, (int) GetLastError());
 660                         break;
 661                 }
 662
 663                 if (namelen >= 255)
 664                         namelen = 255 - 1;
 665                 name[namelen] = TEXT('\0');
 666
 667                 ret = RegDeleteKey(nhk, name);
 668                 if (ret != ERROR_SUCCESS) {
 669                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 670                                    (unsigned int) ret, (int) GetLastError());
 671                         errors++;
 672                 }
 673         }
 674
 675         RegCloseKey(nhk);
 676
 677         return errors ? -1 : 0;
 678 }
 679
 680
 681 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 682 {
 683         char *value = wpa_config_get(ssid, field);
 684         if (value == NULL)
 685                 return;
 686         wpa_config_write_reg_string(hk, field, value);
 687         os_free(value);
 688 }
 689
 690
 691 static void write_int(HKEY hk, const char *field, int value, int def)
 692 {
 693         char val[20];
 694         if (value == def)
 695                 return;
 696         os_snprintf(val, sizeof(val), "%d", value);
 697         wpa_config_write_reg_string(hk, field, val);
 698 }
 699
 700
 701 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 702 {
 703         char *value = wpa_config_get(ssid, "bssid");
 704         if (value == NULL)
 705                 return;
 706         wpa_config_write_reg_string(hk, "bssid", value);
 707         os_free(value);
 708 }
 709
 710
 711 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 712 {
 713         char *value = wpa_config_get(ssid, "psk");
 714         if (value == NULL)
 715                 return;
 716         wpa_config_write_reg_string(hk, "psk", value);
 717         os_free(value);
 718 }
 719
 720
 721 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 722 {
 723         char *value;
 724
 725         if (ssid->proto == DEFAULT_PROTO)
 726                 return;
 727
 728         value = wpa_config_get(ssid, "proto");
 729         if (value == NULL)
 730                 return;
 731         if (value[0])
 732                 wpa_config_write_reg_string(hk, "proto", value);
 733         os_free(value);
 734 }
 735
 736
 737 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 738 {
 739         char *value;
 740
 741         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 742                 return;
 743
 744         value = wpa_config_get(ssid, "key_mgmt");
 745         if (value == NULL)
 746                 return;
 747         if (value[0])
 748                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 749         os_free(value);
 750 }
 751
 752
 753 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 754 {
 755         char *value;
 756
 757         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 758                 return;
 759
 760         value = wpa_config_get(ssid, "pairwise");
 761         if (value == NULL)
 762                 return;
 763         if (value[0])
 764                 wpa_config_write_reg_string(hk, "pairwise", value);
 765         os_free(value);
 766 }
 767
 768
 769 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 770 {
 771         char *value;
 772
 773         if (ssid->group_cipher == DEFAULT_GROUP)
 774                 return;
 775
 776         value = wpa_config_get(ssid, "group");
 777         if (value == NULL)
 778                 return;
 779         if (value[0])
 780                 wpa_config_write_reg_string(hk, "group", value);
 781         os_free(value);
 782 }
 783
 784
 785 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 786 {
 787         char *value;
 788
 789         if (ssid->auth_alg == 0)
 790                 return;
 791
 792         value = wpa_config_get(ssid, "auth_alg");
 793         if (value == NULL)
 794                 return;
 795         if (value[0])
 796                 wpa_config_write_reg_string(hk, "auth_alg", value);
 797         os_free(value);
 798 }
 799
 800
 801 #ifdef IEEE8021X_EAPOL
 802 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 803 {
 804         char *value;
 805
 806         value = wpa_config_get(ssid, "eap");
 807         if (value == NULL)
 808                 return;
 809
 810         if (value[0])
 811                 wpa_config_write_reg_string(hk, "eap", value);
 812         os_free(value);
 813 }
 814 #endif /* IEEE8021X_EAPOL */
 815
 816
 817 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 818 {
 819         char field[20], *value;
 820
 821         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 822         value = wpa_config_get(ssid, field);
 823         if (value) {
 824                 wpa_config_write_reg_string(hk, field, value);
 825                 os_free(value);
 826         }
 827 }
 828
 829
 830 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 831 {
 832         int i, errors = 0;
 833         HKEY nhk, netw;
 834         LONG ret;
 835         TCHAR name[5];
 836
 837         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 838         if (ret != ERROR_SUCCESS) {
 839                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 840                            "for subkey addition: error 0x%x (%d)",
 841                            (unsigned int) ret, (int) GetLastError());
 842                 return 0;
 843         }
 844
 845 #ifdef UNICODE
 846         wsprintf(name, L"%04d", id);
 847 #else /* UNICODE */
 848         os_snprintf(name, sizeof(name), "%04d", id);
 849 #endif /* UNICODE */
 850         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 851                              NULL);
 852         RegCloseKey(nhk);
 853         if (ret != ERROR_SUCCESS) {
 854                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 855                            " error 0x%x (%d)",
 856                            name, (unsigned int) ret, (int) GetLastError());
 857                 return -1;
 858         }
 859
 860 #define STR(t) write_str(netw, #t, ssid)
 861 #define INT(t) write_int(netw, #t, ssid->t, 0)
 862 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 863 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 864 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 865
 866         STR(ssid);
 867         INT(scan_ssid);
 868         write_bssid(netw, ssid);
 869         write_psk(netw, ssid);
 870         write_proto(netw, ssid);
 871         write_key_mgmt(netw, ssid);
 872         write_pairwise(netw, ssid);
 873         write_group(netw, ssid);
 874         write_auth_alg(netw, ssid);
 875 #ifdef IEEE8021X_EAPOL
 876         write_eap(netw, ssid);
 877         STR(identity);
 878         STR(anonymous_identity);
 879         STR(password);
 880         STR(ca_cert);
 881         STR(ca_path);
 882         STR(client_cert);
 883         STR(private_key);
 884         STR(private_key_passwd);
 885         STR(dh_file);
 886         STR(subject_match);
 887         STR(altsubject_match);
 888         STR(ca_cert2);
 889         STR(ca_path2);
 890         STR(client_cert2);
 891         STR(private_key2);
 892         STR(private_key2_passwd);
 893         STR(dh_file2);
 894         STR(subject_match2);
 895         STR(altsubject_match2);
 896         STR(phase1);
 897         STR(phase2);
 898         STR(pcsc);
 899         STR(pin);
 900         STR(engine_id);
 901         STR(key_id);
 902         STR(cert_id);
 903         STR(ca_cert_id);
 904         STR(key2_id);
 905         STR(pin2);
 906         STR(engine2_id);
 907         STR(cert2_id);
 908         STR(ca_cert2_id);
 909         INTe(engine);
 910         INTe(engine2);
 911         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 912 #endif /* IEEE8021X_EAPOL */
 913         for (i = 0; i < 4; i++)
 914                 write_wep_key(netw, i, ssid);
 915         INT(wep_tx_keyidx);
 916         INT(priority);
 917 #ifdef IEEE8021X_EAPOL
 918         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 919         STR(pac_file);
 920         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 921 #endif /* IEEE8021X_EAPOL */
 922         INT(mode);
 923         write_int(netw, "proactive_key_caching", ssid->proactive_key_caching,
 924                   -1);
 925         INT(disabled);
 926         INT(peerkey);
 927 #ifdef CONFIG_IEEE80211W
 928         write_int(netw, "ieee80211w", ssid->ieee80211w,
 929                   MGMT_FRAME_PROTECTION_DEFAULT);
 930 #endif /* CONFIG_IEEE80211W */
 931         STR(id_str);
 932 #ifdef CONFIG_HS20
 933         INT(update_identifier);
 934 #endif /* CONFIG_HS20 */
 935         INT(group_rekey);
 936
 937 #undef STR
 938 #undef INT
 939 #undef INT_DEF
 940
 941         RegCloseKey(netw);
 942
 943         return errors ? -1 : 0;
 944 }
 945
 946
 947 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 948 {
 949         HKEY bhk;
 950         LONG ret;
 951         TCHAR *name;
 952
 953         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 954                              &bhk, NULL);
 955         if (ret != ERROR_SUCCESS) {
 956                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 957                            "error 0x%x (%d)",
 958                            (unsigned int) ret, (int) GetLastError());
 959                 return -1;
 960         }
 961
 962         name = wpa_strdup_tchar(blob->name);
 963         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 964                             blob->len);
 965         if (ret != ERROR_SUCCESS) {
 966                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 967                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 968                            (int) GetLastError());
 969                 RegCloseKey(bhk);
 970                 os_free(name);
 971                 return -1;
 972         }
 973         os_free(name);
 974
 975         RegCloseKey(bhk);
 976
 977         return 0;
 978 }
 979
 980
 981 int wpa_config_write(const char *name, struct wpa_config *config)
 982 {
 983         TCHAR buf[256];
 984         HKEY hk;
 985         LONG ret;
 986         int errors = 0;
 987         struct wpa_ssid *ssid;
 988         struct wpa_config_blob *blob;
 989         int id;
 990
 991         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 992
 993 #ifdef UNICODE
 994         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 995 #else /* UNICODE */
 996         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 997 #endif /* UNICODE */
 998
 999         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
1000         if (ret != ERROR_SUCCESS) {
1001                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
1002                            "configuration registry %s: error %d", buf,
1003                            (int) GetLastError());
1004                 return -1;
1005         }
1006
1007         if (wpa_config_write_global(config, hk)) {
1008                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
1009                            "data");
1010                 errors++;
1011         }
1012
1013         wpa_config_delete_subkeys(hk, TEXT("networks"));
1014         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
1015                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1016                         continue; /* do not save temporary WPS networks */
1017                 if (wpa_config_write_network(hk, ssid, id))
1018                         errors++;
1019         }
1020
1021         RegDeleteKey(hk, TEXT("blobs"));
1022         for (blob = config->blobs; blob; blob = blob->next) {
1023                 if (wpa_config_write_blob(hk, blob))
1024                         errors++;
1025         }
1026
1027         RegCloseKey(hk);
1028
1029         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1030                    name, errors ? "un" : "");
1031         return errors ? -1 : 0;
1032 }