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 #endif /* CONFIG_P2P */
 263
 264         wpa_config_read_reg_dword(hk, TEXT("bss_max_count"),
 265                                   (int *) &config->bss_max_count);
 266         wpa_config_read_reg_dword(hk, TEXT("filter_ssids"),
 267                                   &config->filter_ssids);
 268         wpa_config_read_reg_dword(hk, TEXT("max_num_sta"),
 269                                   (int *) &config->max_num_sta);
 270
 271         return errors ? -1 : 0;
 272 }
 273
 274
 275 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 276                                                  int id)
 277 {
 278         HKEY nhk;
 279         LONG ret;
 280         DWORD i;
 281         struct wpa_ssid *ssid;
 282         int errors = 0;
 283
 284         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 285         if (ret != ERROR_SUCCESS) {
 286                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 287                            "network '" TSTR "'", netw);
 288                 return NULL;
 289         }
 290
 291         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 292         ssid = os_zalloc(sizeof(*ssid));
 293         if (ssid == NULL) {
 294                 RegCloseKey(nhk);
 295                 return NULL;
 296         }
 297         ssid->id = id;
 298
 299         wpa_config_set_network_defaults(ssid);
 300
 301         for (i = 0; ; i++) {
 302                 TCHAR name[255], data[1024];
 303                 DWORD namelen, datalen, type;
 304
 305                 namelen = 255;
 306                 datalen = sizeof(data);
 307                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 308                                    (LPBYTE) data, &datalen);
 309
 310                 if (ret == ERROR_NO_MORE_ITEMS)
 311                         break;
 312
 313                 if (ret != ERROR_SUCCESS) {
 314                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 315                                    (unsigned int) ret);
 316                         break;
 317                 }
 318
 319                 if (namelen >= 255)
 320                         namelen = 255 - 1;
 321                 name[namelen] = TEXT('\0');
 322
 323                 if (datalen >= 1024)
 324                         datalen = 1024 - 1;
 325                 data[datalen] = TEXT('\0');
 326
 327                 wpa_unicode2ascii_inplace(name);
 328                 wpa_unicode2ascii_inplace(data);
 329                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 330                         errors++;
 331         }
 332
 333         RegCloseKey(nhk);
 334
 335         if (ssid->passphrase) {
 336                 if (ssid->psk_set) {
 337                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 338                                    "configured for network '" TSTR "'.", netw);
 339                         errors++;
 340                 }
 341                 wpa_config_update_psk(ssid);
 342         }
 343
 344         if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
 345                                WPA_KEY_MGMT_PSK_SHA256)) &&
 346             !ssid->psk_set) {
 347                 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
 348                            "but no PSK configured for network '" TSTR "'.",
 349                            netw);
 350                 errors++;
 351         }
 352
 353         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 354             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 355             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 356                 /* Group cipher cannot be stronger than the pairwise cipher. */
 357                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 358                            "list since it was not allowed for pairwise "
 359                            "cipher for network '" TSTR "'.", netw);
 360                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 361         }
 362
 363         if (errors) {
 364                 wpa_config_free_ssid(ssid);
 365                 ssid = NULL;
 366         }
 367
 368         return ssid;
 369 }
 370
 371
 372 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 373 {
 374         HKEY nhk;
 375         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 376         int errors = 0;
 377         LONG ret;
 378         DWORD i;
 379
 380         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 381                            &nhk);
 382         if (ret != ERROR_SUCCESS) {
 383                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 384                            "registry key");
 385                 return -1;
 386         }
 387
 388         for (i = 0; ; i++) {
 389                 TCHAR name[255];
 390                 DWORD namelen;
 391
 392                 namelen = 255;
 393                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 394                                    NULL);
 395
 396                 if (ret == ERROR_NO_MORE_ITEMS)
 397                         break;
 398
 399                 if (ret != ERROR_SUCCESS) {
 400                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 401                                    (unsigned int) ret);
 402                         break;
 403                 }
 404
 405                 if (namelen >= 255)
 406                         namelen = 255 - 1;
 407                 name[namelen] = '\0';
 408
 409                 ssid = wpa_config_read_network(nhk, name, i);
 410                 if (ssid == NULL) {
 411                         wpa_printf(MSG_ERROR, "Failed to parse network "
 412                                    "profile '%s'.", name);
 413                         errors++;
 414                         continue;
 415                 }
 416                 if (head == NULL) {
 417                         head = tail = ssid;
 418                 } else {
 419                         tail->next = ssid;
 420                         tail = ssid;
 421                 }
 422                 if (wpa_config_add_prio_network(config, ssid)) {
 423                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 424                                    "'%s' to priority list.", name);
 425                         errors++;
 426                         continue;
 427                 }
 428         }
 429
 430         RegCloseKey(nhk);
 431
 432         config->ssid = head;
 433
 434         return errors ? -1 : 0;
 435 }
 436
 437
 438 struct wpa_config * wpa_config_read(const char *name)
 439 {
 440         TCHAR buf[256];
 441         int errors = 0;
 442         struct wpa_config *config;
 443         HKEY hk;
 444         LONG ret;
 445
 446         config = wpa_config_alloc_empty(NULL, NULL);
 447         if (config == NULL)
 448                 return NULL;
 449         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 450
 451 #ifdef UNICODE
 452         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 453 #else /* UNICODE */
 454         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 455 #endif /* UNICODE */
 456
 457         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 458         if (ret != ERROR_SUCCESS) {
 459                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 460                            "configuration registry HKLM\\" TSTR, buf);
 461                 os_free(config);
 462                 return NULL;
 463         }
 464
 465         if (wpa_config_read_global(config, hk))
 466                 errors++;
 467
 468         if (wpa_config_read_networks(config, hk))
 469                 errors++;
 470
 471         if (wpa_config_read_blobs(config, hk))
 472                 errors++;
 473
 474         wpa_config_debug_dump_networks(config);
 475
 476         RegCloseKey(hk);
 477
 478         if (errors) {
 479                 wpa_config_free(config);
 480                 config = NULL;
 481         }
 482
 483         return config;
 484 }
 485
 486
 487 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 488                                       int def)
 489 {
 490         LONG ret;
 491         DWORD _val = val;
 492
 493         if (val == def) {
 494                 RegDeleteValue(hk, name);
 495                 return 0;
 496         }
 497
 498         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 499                             sizeof(_val));
 500         if (ret != ERROR_SUCCESS) {
 501                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 502                            name, val, (int) GetLastError());
 503                 return -1;
 504         }
 505
 506         return 0;
 507 }
 508
 509
 510 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 511                                        const char *val)
 512 {
 513         LONG ret;
 514         TCHAR *_name, *_val;
 515
 516         _name = wpa_strdup_tchar(name);
 517         if (_name == NULL)
 518                 return -1;
 519
 520         if (val == NULL) {
 521                 RegDeleteValue(hk, _name);
 522                 os_free(_name);
 523                 return 0;
 524         }
 525
 526         _val = wpa_strdup_tchar(val);
 527         if (_val == NULL) {
 528                 os_free(_name);
 529                 return -1;
 530         }
 531         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 532                             (os_strlen(val) + 1) * sizeof(TCHAR));
 533         if (ret != ERROR_SUCCESS) {
 534                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 535                            "error %d", name, val, (int) GetLastError());
 536                 os_free(_name);
 537                 os_free(_val);
 538                 return -1;
 539         }
 540
 541         os_free(_name);
 542         os_free(_val);
 543         return 0;
 544 }
 545
 546
 547 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 548 {
 549 #ifdef CONFIG_CTRL_IFACE
 550         wpa_config_write_reg_string(hk, "ctrl_interface",
 551                                     config->ctrl_interface);
 552 #endif /* CONFIG_CTRL_IFACE */
 553
 554         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 555                                    config->eapol_version,
 556                                    DEFAULT_EAPOL_VERSION);
 557         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 558                                    DEFAULT_AP_SCAN);
 559         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 560                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 561         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 562                                    config->dot11RSNAConfigPMKLifetime, 0);
 563         wpa_config_write_reg_dword(hk,
 564                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 565                                    config->dot11RSNAConfigPMKReauthThreshold,
 566                                    0);
 567         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 568                                    config->dot11RSNAConfigSATimeout, 0);
 569         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 570                                    config->update_config,
 571                                    0);
 572 #ifdef CONFIG_WPS
 573         if (!is_nil_uuid(config->uuid)) {
 574                 char buf[40];
 575                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 576                 wpa_config_write_reg_string(hk, "uuid", buf);
 577         }
 578         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 579         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 580         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 581         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 582         wpa_config_write_reg_string(hk, "serial_number",
 583                                     config->serial_number);
 584         wpa_config_write_reg_string(hk, "device_type", config->device_type);
 585         wpa_config_write_reg_string(hk, "config_methods",
 586                                     config->config_methods);
 587         if (WPA_GET_BE32(config->os_version)) {
 588                 char vbuf[10];
 589                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 590                             WPA_GET_BE32(config->os_version));
 591                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 592         }
 593         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 594                                    config->wps_cred_processing, 0);
 595 #endif /* CONFIG_WPS */
 596 #ifdef CONFIG_P2P
 597         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 598                                     config->p2p_ssid_postfix);
 599 #endif /* CONFIG_P2P */
 600
 601         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 602                                    config->bss_max_count,
 603                                    DEFAULT_BSS_MAX_COUNT);
 604         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 605                                    config->filter_ssids, 0);
 606         wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
 607                                    config->max_num_sta, DEFAULT_MAX_NUM_STA);
 608
 609         return 0;
 610 }
 611
 612
 613 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 614 {
 615         HKEY nhk;
 616         int i, errors = 0;
 617         LONG ret;
 618
 619         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 620         if (ret != ERROR_SUCCESS) {
 621                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 622                            "' for subkey deletion: error 0x%x (%d)", key,
 623                            (unsigned int) ret, (int) GetLastError());
 624                 return 0;
 625         }
 626
 627         for (i = 0; ; i++) {
 628                 TCHAR name[255];
 629                 DWORD namelen;
 630
 631                 namelen = 255;
 632                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 633                                    NULL);
 634
 635                 if (ret == ERROR_NO_MORE_ITEMS)
 636                         break;
 637
 638                 if (ret != ERROR_SUCCESS) {
 639                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 640                                    (unsigned int) ret, (int) GetLastError());
 641                         break;
 642                 }
 643
 644                 if (namelen >= 255)
 645                         namelen = 255 - 1;
 646                 name[namelen] = TEXT('\0');
 647
 648                 ret = RegDeleteKey(nhk, name);
 649                 if (ret != ERROR_SUCCESS) {
 650                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 651                                    (unsigned int) ret, (int) GetLastError());
 652                         errors++;
 653                 }
 654         }
 655
 656         RegCloseKey(nhk);
 657
 658         return errors ? -1 : 0;
 659 }
 660
 661
 662 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 663 {
 664         char *value = wpa_config_get(ssid, field);
 665         if (value == NULL)
 666                 return;
 667         wpa_config_write_reg_string(hk, field, value);
 668         os_free(value);
 669 }
 670
 671
 672 static void write_int(HKEY hk, const char *field, int value, int def)
 673 {
 674         char val[20];
 675         if (value == def)
 676                 return;
 677         os_snprintf(val, sizeof(val), "%d", value);
 678         wpa_config_write_reg_string(hk, field, val);
 679 }
 680
 681
 682 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 683 {
 684         char *value = wpa_config_get(ssid, "bssid");
 685         if (value == NULL)
 686                 return;
 687         wpa_config_write_reg_string(hk, "bssid", value);
 688         os_free(value);
 689 }
 690
 691
 692 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 693 {
 694         char *value = wpa_config_get(ssid, "psk");
 695         if (value == NULL)
 696                 return;
 697         wpa_config_write_reg_string(hk, "psk", value);
 698         os_free(value);
 699 }
 700
 701
 702 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 703 {
 704         char *value;
 705
 706         if (ssid->proto == DEFAULT_PROTO)
 707                 return;
 708
 709         value = wpa_config_get(ssid, "proto");
 710         if (value == NULL)
 711                 return;
 712         if (value[0])
 713                 wpa_config_write_reg_string(hk, "proto", value);
 714         os_free(value);
 715 }
 716
 717
 718 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 719 {
 720         char *value;
 721
 722         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 723                 return;
 724
 725         value = wpa_config_get(ssid, "key_mgmt");
 726         if (value == NULL)
 727                 return;
 728         if (value[0])
 729                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 730         os_free(value);
 731 }
 732
 733
 734 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 735 {
 736         char *value;
 737
 738         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 739                 return;
 740
 741         value = wpa_config_get(ssid, "pairwise");
 742         if (value == NULL)
 743                 return;
 744         if (value[0])
 745                 wpa_config_write_reg_string(hk, "pairwise", value);
 746         os_free(value);
 747 }
 748
 749
 750 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 751 {
 752         char *value;
 753
 754         if (ssid->group_cipher == DEFAULT_GROUP)
 755                 return;
 756
 757         value = wpa_config_get(ssid, "group");
 758         if (value == NULL)
 759                 return;
 760         if (value[0])
 761                 wpa_config_write_reg_string(hk, "group", value);
 762         os_free(value);
 763 }
 764
 765
 766 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 767 {
 768         char *value;
 769
 770         if (ssid->auth_alg == 0)
 771                 return;
 772
 773         value = wpa_config_get(ssid, "auth_alg");
 774         if (value == NULL)
 775                 return;
 776         if (value[0])
 777                 wpa_config_write_reg_string(hk, "auth_alg", value);
 778         os_free(value);
 779 }
 780
 781
 782 #ifdef IEEE8021X_EAPOL
 783 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 784 {
 785         char *value;
 786
 787         value = wpa_config_get(ssid, "eap");
 788         if (value == NULL)
 789                 return;
 790
 791         if (value[0])
 792                 wpa_config_write_reg_string(hk, "eap", value);
 793         os_free(value);
 794 }
 795 #endif /* IEEE8021X_EAPOL */
 796
 797
 798 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 799 {
 800         char field[20], *value;
 801
 802         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 803         value = wpa_config_get(ssid, field);
 804         if (value) {
 805                 wpa_config_write_reg_string(hk, field, value);
 806                 os_free(value);
 807         }
 808 }
 809
 810
 811 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 812 {
 813         int i, errors = 0;
 814         HKEY nhk, netw;
 815         LONG ret;
 816         TCHAR name[5];
 817
 818         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 819         if (ret != ERROR_SUCCESS) {
 820                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 821                            "for subkey addition: error 0x%x (%d)",
 822                            (unsigned int) ret, (int) GetLastError());
 823                 return 0;
 824         }
 825
 826 #ifdef UNICODE
 827         wsprintf(name, L"%04d", id);
 828 #else /* UNICODE */
 829         os_snprintf(name, sizeof(name), "%04d", id);
 830 #endif /* UNICODE */
 831         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 832                              NULL);
 833         RegCloseKey(nhk);
 834         if (ret != ERROR_SUCCESS) {
 835                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 836                            " error 0x%x (%d)",
 837                            name, (unsigned int) ret, (int) GetLastError());
 838                 return -1;
 839         }
 840
 841 #define STR(t) write_str(netw, #t, ssid)
 842 #define INT(t) write_int(netw, #t, ssid->t, 0)
 843 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 844 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 845 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 846
 847         STR(ssid);
 848         INT(scan_ssid);
 849         write_bssid(netw, ssid);
 850         write_psk(netw, ssid);
 851         write_proto(netw, ssid);
 852         write_key_mgmt(netw, ssid);
 853         write_pairwise(netw, ssid);
 854         write_group(netw, ssid);
 855         write_auth_alg(netw, ssid);
 856 #ifdef IEEE8021X_EAPOL
 857         write_eap(netw, ssid);
 858         STR(identity);
 859         STR(anonymous_identity);
 860         STR(password);
 861         STR(ca_cert);
 862         STR(ca_path);
 863         STR(client_cert);
 864         STR(private_key);
 865         STR(private_key_passwd);
 866         STR(dh_file);
 867         STR(subject_match);
 868         STR(altsubject_match);
 869         STR(ca_cert2);
 870         STR(ca_path2);
 871         STR(client_cert2);
 872         STR(private_key2);
 873         STR(private_key2_passwd);
 874         STR(dh_file2);
 875         STR(subject_match2);
 876         STR(altsubject_match2);
 877         STR(phase1);
 878         STR(phase2);
 879         STR(pcsc);
 880         STR(pin);
 881         STR(engine_id);
 882         STR(key_id);
 883         STR(cert_id);
 884         STR(ca_cert_id);
 885         STR(key2_id);
 886         STR(pin2);
 887         STR(engine2_id);
 888         STR(cert2_id);
 889         STR(ca_cert2_id);
 890         INTe(engine);
 891         INTe(engine2);
 892         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 893 #endif /* IEEE8021X_EAPOL */
 894         for (i = 0; i < 4; i++)
 895                 write_wep_key(netw, i, ssid);
 896         INT(wep_tx_keyidx);
 897         INT(priority);
 898 #ifdef IEEE8021X_EAPOL
 899         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 900         STR(pac_file);
 901         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 902 #endif /* IEEE8021X_EAPOL */
 903         INT(mode);
 904         INT(proactive_key_caching);
 905         INT(disabled);
 906         INT(peerkey);
 907 #ifdef CONFIG_IEEE80211W
 908         INT(ieee80211w);
 909 #endif /* CONFIG_IEEE80211W */
 910         STR(id_str);
 911
 912 #undef STR
 913 #undef INT
 914 #undef INT_DEF
 915
 916         RegCloseKey(netw);
 917
 918         return errors ? -1 : 0;
 919 }
 920
 921
 922 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 923 {
 924         HKEY bhk;
 925         LONG ret;
 926         TCHAR *name;
 927
 928         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 929                              &bhk, NULL);
 930         if (ret != ERROR_SUCCESS) {
 931                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 932                            "error 0x%x (%d)",
 933                            (unsigned int) ret, (int) GetLastError());
 934                 return -1;
 935         }
 936
 937         name = wpa_strdup_tchar(blob->name);
 938         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 939                             blob->len);
 940         if (ret != ERROR_SUCCESS) {
 941                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 942                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 943                            (int) GetLastError());
 944                 RegCloseKey(bhk);
 945                 os_free(name);
 946                 return -1;
 947         }
 948         os_free(name);
 949
 950         RegCloseKey(bhk);
 951
 952         return 0;
 953 }
 954
 955
 956 int wpa_config_write(const char *name, struct wpa_config *config)
 957 {
 958         TCHAR buf[256];
 959         HKEY hk;
 960         LONG ret;
 961         int errors = 0;
 962         struct wpa_ssid *ssid;
 963         struct wpa_config_blob *blob;
 964         int id;
 965
 966         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 967
 968 #ifdef UNICODE
 969         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 970 #else /* UNICODE */
 971         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 972 #endif /* UNICODE */
 973
 974         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 975         if (ret != ERROR_SUCCESS) {
 976                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 977                            "configuration registry %s: error %d", buf,
 978                            (int) GetLastError());
 979                 return -1;
 980         }
 981
 982         if (wpa_config_write_global(config, hk)) {
 983                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 984                            "data");
 985                 errors++;
 986         }
 987
 988         wpa_config_delete_subkeys(hk, TEXT("networks"));
 989         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
 990                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
 991                         continue; /* do not save temporary WPS networks */
 992                 if (wpa_config_write_network(hk, ssid, id))
 993                         errors++;
 994         }
 995
 996         RegDeleteKey(hk, TEXT("blobs"));
 997         for (blob = config->blobs; blob; blob = blob->next) {
 998                 if (wpa_config_write_blob(hk, blob))
 999                         errors++;
1000         }
1001
1002         RegCloseKey(hk);
1003
1004         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1005                    name, errors ? "un" : "");
1006         return errors ? -1 : 0;
1007 }