wpa_supplicant/config_winreg.c

   1 /*
   2  * WPA Supplicant / Configuration backend: Windows registry
   3  * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  *
  14  * This file implements a configuration backend for Windows registry. All the
  15  * configuration information is stored in the registry and the format for
  16  * network configuration fields is same as described in the sample
  17  * configuration file, wpa_supplicant.conf.
  18  *
  19  * Configuration data is in
  20  * \a HKEY_LOCAL_MACHINE\\SOFTWARE\\%wpa_supplicant\\configs
  21  * key. Each configuration profile has its own key under this. In terms of text
  22  * files, each profile would map to a separate text file with possibly multiple
  23  * networks. Under each profile, there is a networks key that lists all
  24  * networks as a subkey. Each network has set of values in the same way as
  25  * network block in the configuration file. In addition, blobs subkey has
  26  * possible blobs as values.
  27  *
  28  * Example network configuration block:
  29  * \verbatim
  30 HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
  31    ssid="example"
  32    key_mgmt=WPA-PSK
  33 \endverbatim
  34  */
  35
  36 #include "includes.h"
  37
  38 #include "common.h"
  39 #include "uuid.h"
  40 #include "config.h"
  41
  42 #ifndef WPA_KEY_ROOT
  43 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
  44 #endif
  45 #ifndef WPA_KEY_PREFIX
  46 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
  47 #endif
  48
  49 #ifdef UNICODE
  50 #define TSTR "%S"
  51 #else /* UNICODE */
  52 #define TSTR "%s"
  53 #endif /* UNICODE */
  54
  55
  56 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
  57 {
  58         struct wpa_config_blob *blob;
  59         int errors = 0;
  60         HKEY bhk;
  61         LONG ret;
  62         DWORD i;
  63
  64         ret = RegOpenKeyEx(hk, TEXT("blobs"), 0, KEY_QUERY_VALUE, &bhk);
  65         if (ret != ERROR_SUCCESS) {
  66                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
  67                            "blobs key");
  68                 return 0; /* assume no blobs */
  69         }
  70
  71         for (i = 0; ; i++) {
  72 #define TNAMELEN 255
  73                 TCHAR name[TNAMELEN];
  74                 char data[4096];
  75                 DWORD namelen, datalen, type;
  76
  77                 namelen = TNAMELEN;
  78                 datalen = sizeof(data);
  79                 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
  80                                    (LPBYTE) data, &datalen);
  81
  82                 if (ret == ERROR_NO_MORE_ITEMS)
  83                         break;
  84
  85                 if (ret != ERROR_SUCCESS) {
  86                         wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
  87                                    (unsigned int) ret);
  88                         break;
  89                 }
  90
  91                 if (namelen >= TNAMELEN)
  92                         namelen = TNAMELEN - 1;
  93                 name[namelen] = TEXT('\0');
  94                 wpa_unicode2ascii_inplace(name);
  95
  96                 if (datalen >= sizeof(data))
  97                         datalen = sizeof(data) - 1;
  98
  99                 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
 100                            (int) i, name, (int) datalen);
 101
 102                 blob = os_zalloc(sizeof(*blob));
 103                 if (blob == NULL) {
 104                         errors++;
 105                         break;
 106                 }
 107                 blob->name = os_strdup((char *) name);
 108                 blob->data = os_malloc(datalen);
 109                 if (blob->name == NULL || blob->data == NULL) {
 110                         wpa_config_free_blob(blob);
 111                         errors++;
 112                         break;
 113                 }
 114                 os_memcpy(blob->data, data, datalen);
 115                 blob->len = datalen;
 116
 117                 wpa_config_set_blob(config, blob);
 118         }
 119
 120         RegCloseKey(bhk);
 121
 122         return errors ? -1 : 0;
 123 }
 124
 125
 126 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
 127 {
 128         DWORD val, buflen;
 129         LONG ret;
 130
 131         buflen = sizeof(val);
 132         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
 133         if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
 134                 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
 135                 *_val = val;
 136                 return 0;
 137         }
 138
 139         return -1;
 140 }
 141
 142
 143 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
 144 {
 145         DWORD buflen;
 146         LONG ret;
 147         TCHAR *val;
 148
 149         buflen = 0;
 150         ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
 151         if (ret != ERROR_SUCCESS)
 152                 return NULL;
 153         val = os_malloc(buflen);
 154         if (val == NULL)
 155                 return NULL;
 156
 157         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
 158         if (ret != ERROR_SUCCESS) {
 159                 os_free(val);
 160                 return NULL;
 161         }
 162
 163         wpa_unicode2ascii_inplace(val);
 164         wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
 165         return (char *) val;
 166 }
 167
 168
 169 #ifdef CONFIG_WPS
 170 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
 171 {
 172         char *str;
 173         int ret = 0;
 174
 175         str = wpa_config_read_reg_string(hk, TEXT("uuid"));
 176         if (str == NULL)
 177                 return 0;
 178
 179         if (uuid_str2bin(str, config->uuid))
 180                 ret = -1;
 181
 182         os_free(str);
 183
 184         return ret;
 185 }
 186
 187
 188 static int wpa_config_read_global_os_version(struct wpa_config *config,
 189                                              HKEY hk)
 190 {
 191         char *str;
 192         int ret = 0;
 193
 194         str = wpa_config_read_reg_string(hk, TEXT("os_version"));
 195         if (str == NULL)
 196                 return 0;
 197
 198         if (hexstr2bin(str, config->os_version, 4))
 199                 ret = -1;
 200
 201         os_free(str);
 202
 203         return ret;
 204 }
 205 #endif /* CONFIG_WPS */
 206
 207
 208 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 209 {
 210         int errors = 0;
 211
 212         wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
 213         wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
 214                                   &config->fast_reauth);
 215         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 216                                   (int *) &config->dot11RSNAConfigPMKLifetime);
 217         wpa_config_read_reg_dword(hk,
 218                                   TEXT("dot11RSNAConfigPMKReauthThreshold"),
 219                                   (int *)
 220                                   &config->dot11RSNAConfigPMKReauthThreshold);
 221         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 222                                   (int *) &config->dot11RSNAConfigSATimeout);
 223         wpa_config_read_reg_dword(hk, TEXT("update_config"),
 224                                   &config->update_config);
 225
 226         if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
 227                                       &config->eapol_version) == 0) {
 228                 if (config->eapol_version < 1 ||
 229                     config->eapol_version > 2) {
 230                         wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
 231                                    config->eapol_version);
 232                         errors++;
 233                 }
 234         }
 235
 236         config->ctrl_interface = wpa_config_read_reg_string(
 237                 hk, TEXT("ctrl_interface"));
 238
 239 #ifdef CONFIG_WPS
 240         if (wpa_config_read_global_uuid(config, hk))
 241                 errors++;
 242         config->device_name = wpa_config_read_reg_string(
 243                 hk, TEXT("device_name"));
 244         config->manufacturer = wpa_config_read_reg_string(
 245                 hk, TEXT("manufacturer"));
 246         config->model_name = wpa_config_read_reg_string(
 247                 hk, TEXT("model_name"));
 248         config->serial_number = wpa_config_read_reg_string(
 249                 hk, TEXT("serial_number"));
 250         config->device_type = wpa_config_read_reg_string(
 251                 hk, TEXT("device_type"));
 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
 273         return errors ? -1 : 0;
 274 }
 275
 276
 277 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 278                                                  int id)
 279 {
 280         HKEY nhk;
 281         LONG ret;
 282         DWORD i;
 283         struct wpa_ssid *ssid;
 284         int errors = 0;
 285
 286         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 287         if (ret != ERROR_SUCCESS) {
 288                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 289                            "network '" TSTR "'", netw);
 290                 return NULL;
 291         }
 292
 293         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 294         ssid = os_zalloc(sizeof(*ssid));
 295         if (ssid == NULL) {
 296                 RegCloseKey(nhk);
 297                 return NULL;
 298         }
 299         ssid->id = id;
 300
 301         wpa_config_set_network_defaults(ssid);
 302
 303         for (i = 0; ; i++) {
 304                 TCHAR name[255], data[1024];
 305                 DWORD namelen, datalen, type;
 306
 307                 namelen = 255;
 308                 datalen = sizeof(data);
 309                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 310                                    (LPBYTE) data, &datalen);
 311
 312                 if (ret == ERROR_NO_MORE_ITEMS)
 313                         break;
 314
 315                 if (ret != ERROR_SUCCESS) {
 316                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 317                                    (unsigned int) ret);
 318                         break;
 319                 }
 320
 321                 if (namelen >= 255)
 322                         namelen = 255 - 1;
 323                 name[namelen] = TEXT('\0');
 324
 325                 if (datalen >= 1024)
 326                         datalen = 1024 - 1;
 327                 data[datalen] = TEXT('\0');
 328
 329                 wpa_unicode2ascii_inplace(name);
 330                 wpa_unicode2ascii_inplace(data);
 331                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 332                         errors++;
 333         }
 334
 335         RegCloseKey(nhk);
 336
 337         if (ssid->passphrase) {
 338                 if (ssid->psk_set) {
 339                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 340                                    "configured for network '" TSTR "'.", netw);
 341                         errors++;
 342                 }
 343                 wpa_config_update_psk(ssid);
 344         }
 345
 346         if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
 347                                WPA_KEY_MGMT_PSK_SHA256)) &&
 348             !ssid->psk_set) {
 349                 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
 350                            "but no PSK configured for network '" TSTR "'.",
 351                            netw);
 352                 errors++;
 353         }
 354
 355         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 356             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 357             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 358                 /* Group cipher cannot be stronger than the pairwise cipher. */
 359                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 360                            "list since it was not allowed for pairwise "
 361                            "cipher for network '" TSTR "'.", netw);
 362                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 363         }
 364
 365         if (errors) {
 366                 wpa_config_free_ssid(ssid);
 367                 ssid = NULL;
 368         }
 369
 370         return ssid;
 371 }
 372
 373
 374 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 375 {
 376         HKEY nhk;
 377         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 378         int errors = 0;
 379         LONG ret;
 380         DWORD i;
 381
 382         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 383                            &nhk);
 384         if (ret != ERROR_SUCCESS) {
 385                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 386                            "registry key");
 387                 return -1;
 388         }
 389
 390         for (i = 0; ; i++) {
 391                 TCHAR name[255];
 392                 DWORD namelen;
 393
 394                 namelen = 255;
 395                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 396                                    NULL);
 397
 398                 if (ret == ERROR_NO_MORE_ITEMS)
 399                         break;
 400
 401                 if (ret != ERROR_SUCCESS) {
 402                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 403                                    (unsigned int) ret);
 404                         break;
 405                 }
 406
 407                 if (namelen >= 255)
 408                         namelen = 255 - 1;
 409                 name[namelen] = '\0';
 410
 411                 ssid = wpa_config_read_network(nhk, name, i);
 412                 if (ssid == NULL) {
 413                         wpa_printf(MSG_ERROR, "Failed to parse network "
 414                                    "profile '%s'.", name);
 415                         errors++;
 416                         continue;
 417                 }
 418                 if (head == NULL) {
 419                         head = tail = ssid;
 420                 } else {
 421                         tail->next = ssid;
 422                         tail = ssid;
 423                 }
 424                 if (wpa_config_add_prio_network(config, ssid)) {
 425                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 426                                    "'%s' to priority list.", name);
 427                         errors++;
 428                         continue;
 429                 }
 430         }
 431
 432         RegCloseKey(nhk);
 433
 434         config->ssid = head;
 435
 436         return errors ? -1 : 0;
 437 }
 438
 439
 440 struct wpa_config * wpa_config_read(const char *name)
 441 {
 442         TCHAR buf[256];
 443         int errors = 0;
 444         struct wpa_config *config;
 445         HKEY hk;
 446         LONG ret;
 447
 448         config = wpa_config_alloc_empty(NULL, NULL);
 449         if (config == NULL)
 450                 return NULL;
 451         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 452
 453 #ifdef UNICODE
 454         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 455 #else /* UNICODE */
 456         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 457 #endif /* UNICODE */
 458
 459         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 460         if (ret != ERROR_SUCCESS) {
 461                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 462                            "configuration registry HKLM\\" TSTR, buf);
 463                 os_free(config);
 464                 return NULL;
 465         }
 466
 467         if (wpa_config_read_global(config, hk))
 468                 errors++;
 469
 470         if (wpa_config_read_networks(config, hk))
 471                 errors++;
 472
 473         if (wpa_config_read_blobs(config, hk))
 474                 errors++;
 475
 476         wpa_config_debug_dump_networks(config);
 477
 478         RegCloseKey(hk);
 479
 480         if (errors) {
 481                 wpa_config_free(config);
 482                 config = NULL;
 483         }
 484
 485         return config;
 486 }
 487
 488
 489 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 490                                       int def)
 491 {
 492         LONG ret;
 493         DWORD _val = val;
 494
 495         if (val == def) {
 496                 RegDeleteValue(hk, name);
 497                 return 0;
 498         }
 499
 500         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 501                             sizeof(_val));
 502         if (ret != ERROR_SUCCESS) {
 503                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 504                            name, val, (int) GetLastError());
 505                 return -1;
 506         }
 507
 508         return 0;
 509 }
 510
 511
 512 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 513                                        const char *val)
 514 {
 515         LONG ret;
 516         TCHAR *_name, *_val;
 517
 518         _name = wpa_strdup_tchar(name);
 519         if (_name == NULL)
 520                 return -1;
 521
 522         if (val == NULL) {
 523                 RegDeleteValue(hk, _name);
 524                 os_free(_name);
 525                 return 0;
 526         }
 527
 528         _val = wpa_strdup_tchar(val);
 529         if (_val == NULL) {
 530                 os_free(_name);
 531                 return -1;
 532         }
 533         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 534                             (os_strlen(val) + 1) * sizeof(TCHAR));
 535         if (ret != ERROR_SUCCESS) {
 536                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 537                            "error %d", name, val, (int) GetLastError());
 538                 os_free(_name);
 539                 os_free(_val);
 540                 return -1;
 541         }
 542
 543         os_free(_name);
 544         os_free(_val);
 545         return 0;
 546 }
 547
 548
 549 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 550 {
 551 #ifdef CONFIG_CTRL_IFACE
 552         wpa_config_write_reg_string(hk, "ctrl_interface",
 553                                     config->ctrl_interface);
 554 #endif /* CONFIG_CTRL_IFACE */
 555
 556         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 557                                    config->eapol_version,
 558                                    DEFAULT_EAPOL_VERSION);
 559         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 560                                    DEFAULT_AP_SCAN);
 561         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 562                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 563         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 564                                    config->dot11RSNAConfigPMKLifetime, 0);
 565         wpa_config_write_reg_dword(hk,
 566                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 567                                    config->dot11RSNAConfigPMKReauthThreshold,
 568                                    0);
 569         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 570                                    config->dot11RSNAConfigSATimeout, 0);
 571         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 572                                    config->update_config,
 573                                    0);
 574 #ifdef CONFIG_WPS
 575         if (!is_nil_uuid(config->uuid)) {
 576                 char buf[40];
 577                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 578                 wpa_config_write_reg_string(hk, "uuid", buf);
 579         }
 580         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 581         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 582         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 583         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 584         wpa_config_write_reg_string(hk, "serial_number",
 585                                     config->serial_number);
 586         wpa_config_write_reg_string(hk, "device_type", config->device_type);
 587         wpa_config_write_reg_string(hk, "config_methods",
 588                                     config->config_methods);
 589         if (WPA_GET_BE32(config->os_version)) {
 590                 char vbuf[10];
 591                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 592                             WPA_GET_BE32(config->os_version));
 593                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 594         }
 595         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 596                                    config->wps_cred_processing, 0);
 597 #endif /* CONFIG_WPS */
 598 #ifdef CONFIG_P2P
 599         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 600                                     config->p2p_ssid_postfix);
 601         wpa_config_write_reg_dword(hk, TEXT("p2p_group_idle"),
 602                                    config->p2p_group_idle, 0);
 603 #endif /* CONFIG_P2P */
 604
 605         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 606                                    config->bss_max_count,
 607                                    DEFAULT_BSS_MAX_COUNT);
 608         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 609                                    config->filter_ssids, 0);
 610         wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
 611                                    config->max_num_sta, DEFAULT_MAX_NUM_STA);
 612
 613         return 0;
 614 }
 615
 616
 617 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 618 {
 619         HKEY nhk;
 620         int i, errors = 0;
 621         LONG ret;
 622
 623         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 624         if (ret != ERROR_SUCCESS) {
 625                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 626                            "' for subkey deletion: error 0x%x (%d)", key,
 627                            (unsigned int) ret, (int) GetLastError());
 628                 return 0;
 629         }
 630
 631         for (i = 0; ; i++) {
 632                 TCHAR name[255];
 633                 DWORD namelen;
 634
 635                 namelen = 255;
 636                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 637                                    NULL);
 638
 639                 if (ret == ERROR_NO_MORE_ITEMS)
 640                         break;
 641
 642                 if (ret != ERROR_SUCCESS) {
 643                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 644                                    (unsigned int) ret, (int) GetLastError());
 645                         break;
 646                 }
 647
 648                 if (namelen >= 255)
 649                         namelen = 255 - 1;
 650                 name[namelen] = TEXT('\0');
 651
 652                 ret = RegDeleteKey(nhk, name);
 653                 if (ret != ERROR_SUCCESS) {
 654                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 655                                    (unsigned int) ret, (int) GetLastError());
 656                         errors++;
 657                 }
 658         }
 659
 660         RegCloseKey(nhk);
 661
 662         return errors ? -1 : 0;
 663 }
 664
 665
 666 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 667 {
 668         char *value = wpa_config_get(ssid, field);
 669         if (value == NULL)
 670                 return;
 671         wpa_config_write_reg_string(hk, field, value);
 672         os_free(value);
 673 }
 674
 675
 676 static void write_int(HKEY hk, const char *field, int value, int def)
 677 {
 678         char val[20];
 679         if (value == def)
 680                 return;
 681         os_snprintf(val, sizeof(val), "%d", value);
 682         wpa_config_write_reg_string(hk, field, val);
 683 }
 684
 685
 686 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 687 {
 688         char *value = wpa_config_get(ssid, "bssid");
 689         if (value == NULL)
 690                 return;
 691         wpa_config_write_reg_string(hk, "bssid", value);
 692         os_free(value);
 693 }
 694
 695
 696 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 697 {
 698         char *value = wpa_config_get(ssid, "psk");
 699         if (value == NULL)
 700                 return;
 701         wpa_config_write_reg_string(hk, "psk", value);
 702         os_free(value);
 703 }
 704
 705
 706 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 707 {
 708         char *value;
 709
 710         if (ssid->proto == DEFAULT_PROTO)
 711                 return;
 712
 713         value = wpa_config_get(ssid, "proto");
 714         if (value == NULL)
 715                 return;
 716         if (value[0])
 717                 wpa_config_write_reg_string(hk, "proto", value);
 718         os_free(value);
 719 }
 720
 721
 722 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 723 {
 724         char *value;
 725
 726         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 727                 return;
 728
 729         value = wpa_config_get(ssid, "key_mgmt");
 730         if (value == NULL)
 731                 return;
 732         if (value[0])
 733                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 734         os_free(value);
 735 }
 736
 737
 738 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 739 {
 740         char *value;
 741
 742         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 743                 return;
 744
 745         value = wpa_config_get(ssid, "pairwise");
 746         if (value == NULL)
 747                 return;
 748         if (value[0])
 749                 wpa_config_write_reg_string(hk, "pairwise", value);
 750         os_free(value);
 751 }
 752
 753
 754 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 755 {
 756         char *value;
 757
 758         if (ssid->group_cipher == DEFAULT_GROUP)
 759                 return;
 760
 761         value = wpa_config_get(ssid, "group");
 762         if (value == NULL)
 763                 return;
 764         if (value[0])
 765                 wpa_config_write_reg_string(hk, "group", value);
 766         os_free(value);
 767 }
 768
 769
 770 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 771 {
 772         char *value;
 773
 774         if (ssid->auth_alg == 0)
 775                 return;
 776
 777         value = wpa_config_get(ssid, "auth_alg");
 778         if (value == NULL)
 779                 return;
 780         if (value[0])
 781                 wpa_config_write_reg_string(hk, "auth_alg", value);
 782         os_free(value);
 783 }
 784
 785
 786 #ifdef IEEE8021X_EAPOL
 787 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 788 {
 789         char *value;
 790
 791         value = wpa_config_get(ssid, "eap");
 792         if (value == NULL)
 793                 return;
 794
 795         if (value[0])
 796                 wpa_config_write_reg_string(hk, "eap", value);
 797         os_free(value);
 798 }
 799 #endif /* IEEE8021X_EAPOL */
 800
 801
 802 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 803 {
 804         char field[20], *value;
 805
 806         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 807         value = wpa_config_get(ssid, field);
 808         if (value) {
 809                 wpa_config_write_reg_string(hk, field, value);
 810                 os_free(value);
 811         }
 812 }
 813
 814
 815 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 816 {
 817         int i, errors = 0;
 818         HKEY nhk, netw;
 819         LONG ret;
 820         TCHAR name[5];
 821
 822         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 823         if (ret != ERROR_SUCCESS) {
 824                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 825                            "for subkey addition: error 0x%x (%d)",
 826                            (unsigned int) ret, (int) GetLastError());
 827                 return 0;
 828         }
 829
 830 #ifdef UNICODE
 831         wsprintf(name, L"%04d", id);
 832 #else /* UNICODE */
 833         os_snprintf(name, sizeof(name), "%04d", id);
 834 #endif /* UNICODE */
 835         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 836                              NULL);
 837         RegCloseKey(nhk);
 838         if (ret != ERROR_SUCCESS) {
 839                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 840                            " error 0x%x (%d)",
 841                            name, (unsigned int) ret, (int) GetLastError());
 842                 return -1;
 843         }
 844
 845 #define STR(t) write_str(netw, #t, ssid)
 846 #define INT(t) write_int(netw, #t, ssid->t, 0)
 847 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 848 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 849 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 850
 851         STR(ssid);
 852         INT(scan_ssid);
 853         write_bssid(netw, ssid);
 854         write_psk(netw, ssid);
 855         write_proto(netw, ssid);
 856         write_key_mgmt(netw, ssid);
 857         write_pairwise(netw, ssid);
 858         write_group(netw, ssid);
 859         write_auth_alg(netw, ssid);
 860 #ifdef IEEE8021X_EAPOL
 861         write_eap(netw, ssid);
 862         STR(identity);
 863         STR(anonymous_identity);
 864         STR(password);
 865         STR(ca_cert);
 866         STR(ca_path);
 867         STR(client_cert);
 868         STR(private_key);
 869         STR(private_key_passwd);
 870         STR(dh_file);
 871         STR(subject_match);
 872         STR(altsubject_match);
 873         STR(ca_cert2);
 874         STR(ca_path2);
 875         STR(client_cert2);
 876         STR(private_key2);
 877         STR(private_key2_passwd);
 878         STR(dh_file2);
 879         STR(subject_match2);
 880         STR(altsubject_match2);
 881         STR(phase1);
 882         STR(phase2);
 883         STR(pcsc);
 884         STR(pin);
 885         STR(engine_id);
 886         STR(key_id);
 887         STR(cert_id);
 888         STR(ca_cert_id);
 889         STR(key2_id);
 890         STR(pin2);
 891         STR(engine2_id);
 892         STR(cert2_id);
 893         STR(ca_cert2_id);
 894         INTe(engine);
 895         INTe(engine2);
 896         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 897 #endif /* IEEE8021X_EAPOL */
 898         for (i = 0; i < 4; i++)
 899                 write_wep_key(netw, i, ssid);
 900         INT(wep_tx_keyidx);
 901         INT(priority);
 902 #ifdef IEEE8021X_EAPOL
 903         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 904         STR(pac_file);
 905         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 906 #endif /* IEEE8021X_EAPOL */
 907         INT(mode);
 908         INT(proactive_key_caching);
 909         INT(disabled);
 910         INT(peerkey);
 911 #ifdef CONFIG_IEEE80211W
 912         INT(ieee80211w);
 913 #endif /* CONFIG_IEEE80211W */
 914         STR(id_str);
 915
 916 #undef STR
 917 #undef INT
 918 #undef INT_DEF
 919
 920         RegCloseKey(netw);
 921
 922         return errors ? -1 : 0;
 923 }
 924
 925
 926 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 927 {
 928         HKEY bhk;
 929         LONG ret;
 930         TCHAR *name;
 931
 932         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 933                              &bhk, NULL);
 934         if (ret != ERROR_SUCCESS) {
 935                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 936                            "error 0x%x (%d)",
 937                            (unsigned int) ret, (int) GetLastError());
 938                 return -1;
 939         }
 940
 941         name = wpa_strdup_tchar(blob->name);
 942         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 943                             blob->len);
 944         if (ret != ERROR_SUCCESS) {
 945                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 946                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 947                            (int) GetLastError());
 948                 RegCloseKey(bhk);
 949                 os_free(name);
 950                 return -1;
 951         }
 952         os_free(name);
 953
 954         RegCloseKey(bhk);
 955
 956         return 0;
 957 }
 958
 959
 960 int wpa_config_write(const char *name, struct wpa_config *config)
 961 {
 962         TCHAR buf[256];
 963         HKEY hk;
 964         LONG ret;
 965         int errors = 0;
 966         struct wpa_ssid *ssid;
 967         struct wpa_config_blob *blob;
 968         int id;
 969
 970         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 971
 972 #ifdef UNICODE
 973         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 974 #else /* UNICODE */
 975         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 976 #endif /* UNICODE */
 977
 978         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 979         if (ret != ERROR_SUCCESS) {
 980                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 981                            "configuration registry %s: error %d", buf,
 982                            (int) GetLastError());
 983                 return -1;
 984         }
 985
 986         if (wpa_config_write_global(config, hk)) {
 987                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 988                            "data");
 989                 errors++;
 990         }
 991
 992         wpa_config_delete_subkeys(hk, TEXT("networks"));
 993         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
 994                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
 995                         continue; /* do not save temporary WPS networks */
 996                 if (wpa_config_write_network(hk, ssid, id))
 997                         errors++;
 998         }
 999
1000         RegDeleteKey(hk, TEXT("blobs"));
1001         for (blob = config->blobs; blob; blob = blob->next) {
1002                 if (wpa_config_write_blob(hk, blob))
1003                         errors++;
1004         }
1005
1006         RegCloseKey(hk);
1007
1008         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1009                    name, errors ? "un" : "");
1010         return errors ? -1 : 0;
1011 }