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
 260         return errors ? -1 : 0;
 261 }
 262
 263
 264 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 265                                                  int id)
 266 {
 267         HKEY nhk;
 268         LONG ret;
 269         DWORD i;
 270         struct wpa_ssid *ssid;
 271         int errors = 0;
 272
 273         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 274         if (ret != ERROR_SUCCESS) {
 275                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 276                            "network '" TSTR "'", netw);
 277                 return NULL;
 278         }
 279
 280         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 281         ssid = os_zalloc(sizeof(*ssid));
 282         if (ssid == NULL) {
 283                 RegCloseKey(nhk);
 284                 return NULL;
 285         }
 286         ssid->id = id;
 287
 288         wpa_config_set_network_defaults(ssid);
 289
 290         for (i = 0; ; i++) {
 291                 TCHAR name[255], data[1024];
 292                 DWORD namelen, datalen, type;
 293
 294                 namelen = 255;
 295                 datalen = sizeof(data);
 296                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 297                                    (LPBYTE) data, &datalen);
 298
 299                 if (ret == ERROR_NO_MORE_ITEMS)
 300                         break;
 301
 302                 if (ret != ERROR_SUCCESS) {
 303                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 304                                    (unsigned int) ret);
 305                         break;
 306                 }
 307
 308                 if (namelen >= 255)
 309                         namelen = 255 - 1;
 310                 name[namelen] = TEXT('\0');
 311
 312                 if (datalen >= 1024)
 313                         datalen = 1024 - 1;
 314                 data[datalen] = TEXT('\0');
 315
 316                 wpa_unicode2ascii_inplace(name);
 317                 wpa_unicode2ascii_inplace(data);
 318                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 319                         errors++;
 320         }
 321
 322         RegCloseKey(nhk);
 323
 324         if (ssid->passphrase) {
 325                 if (ssid->psk_set) {
 326                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 327                                    "configured for network '" TSTR "'.", netw);
 328                         errors++;
 329                 }
 330                 wpa_config_update_psk(ssid);
 331         }
 332
 333         if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
 334                                WPA_KEY_MGMT_PSK_SHA256)) &&
 335             !ssid->psk_set) {
 336                 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
 337                            "but no PSK configured for network '" TSTR "'.",
 338                            netw);
 339                 errors++;
 340         }
 341
 342         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 343             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 344             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 345                 /* Group cipher cannot be stronger than the pairwise cipher. */
 346                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 347                            "list since it was not allowed for pairwise "
 348                            "cipher for network '" TSTR "'.", netw);
 349                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 350         }
 351
 352         if (errors) {
 353                 wpa_config_free_ssid(ssid);
 354                 ssid = NULL;
 355         }
 356
 357         return ssid;
 358 }
 359
 360
 361 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 362 {
 363         HKEY nhk;
 364         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 365         int errors = 0;
 366         LONG ret;
 367         DWORD i;
 368
 369         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 370                            &nhk);
 371         if (ret != ERROR_SUCCESS) {
 372                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 373                            "registry key");
 374                 return -1;
 375         }
 376
 377         for (i = 0; ; i++) {
 378                 TCHAR name[255];
 379                 DWORD namelen;
 380
 381                 namelen = 255;
 382                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 383                                    NULL);
 384
 385                 if (ret == ERROR_NO_MORE_ITEMS)
 386                         break;
 387
 388                 if (ret != ERROR_SUCCESS) {
 389                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 390                                    (unsigned int) ret);
 391                         break;
 392                 }
 393
 394                 if (namelen >= 255)
 395                         namelen = 255 - 1;
 396                 name[namelen] = '\0';
 397
 398                 ssid = wpa_config_read_network(nhk, name, i);
 399                 if (ssid == NULL) {
 400                         wpa_printf(MSG_ERROR, "Failed to parse network "
 401                                    "profile '%s'.", name);
 402                         errors++;
 403                         continue;
 404                 }
 405                 if (head == NULL) {
 406                         head = tail = ssid;
 407                 } else {
 408                         tail->next = ssid;
 409                         tail = ssid;
 410                 }
 411                 if (wpa_config_add_prio_network(config, ssid)) {
 412                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 413                                    "'%s' to priority list.", name);
 414                         errors++;
 415                         continue;
 416                 }
 417         }
 418
 419         RegCloseKey(nhk);
 420
 421         config->ssid = head;
 422
 423         return errors ? -1 : 0;
 424 }
 425
 426
 427 struct wpa_config * wpa_config_read(const char *name)
 428 {
 429         TCHAR buf[256];
 430         int errors = 0;
 431         struct wpa_config *config;
 432         HKEY hk;
 433         LONG ret;
 434
 435         config = wpa_config_alloc_empty(NULL, NULL);
 436         if (config == NULL)
 437                 return NULL;
 438         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 439
 440 #ifdef UNICODE
 441         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 442 #else /* UNICODE */
 443         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 444 #endif /* UNICODE */
 445
 446         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 447         if (ret != ERROR_SUCCESS) {
 448                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 449                            "configuration registry HKLM\\" TSTR, buf);
 450                 os_free(config);
 451                 return NULL;
 452         }
 453
 454         if (wpa_config_read_global(config, hk))
 455                 errors++;
 456
 457         if (wpa_config_read_networks(config, hk))
 458                 errors++;
 459
 460         if (wpa_config_read_blobs(config, hk))
 461                 errors++;
 462
 463         wpa_config_debug_dump_networks(config);
 464
 465         RegCloseKey(hk);
 466
 467         if (errors) {
 468                 wpa_config_free(config);
 469                 config = NULL;
 470         }
 471
 472         return config;
 473 }
 474
 475
 476 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 477                                       int def)
 478 {
 479         LONG ret;
 480         DWORD _val = val;
 481
 482         if (val == def) {
 483                 RegDeleteValue(hk, name);
 484                 return 0;
 485         }
 486
 487         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 488                             sizeof(_val));
 489         if (ret != ERROR_SUCCESS) {
 490                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 491                            name, val, (int) GetLastError());
 492                 return -1;
 493         }
 494
 495         return 0;
 496 }
 497
 498
 499 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 500                                        const char *val)
 501 {
 502         LONG ret;
 503         TCHAR *_name, *_val;
 504
 505         _name = wpa_strdup_tchar(name);
 506         if (_name == NULL)
 507                 return -1;
 508
 509         if (val == NULL) {
 510                 RegDeleteValue(hk, _name);
 511                 os_free(_name);
 512                 return 0;
 513         }
 514
 515         _val = wpa_strdup_tchar(val);
 516         if (_val == NULL) {
 517                 os_free(_name);
 518                 return -1;
 519         }
 520         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 521                             (os_strlen(val) + 1) * sizeof(TCHAR));
 522         if (ret != ERROR_SUCCESS) {
 523                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 524                            "error %d", name, val, (int) GetLastError());
 525                 os_free(_name);
 526                 os_free(_val);
 527                 return -1;
 528         }
 529
 530         os_free(_name);
 531         os_free(_val);
 532         return 0;
 533 }
 534
 535
 536 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 537 {
 538 #ifdef CONFIG_CTRL_IFACE
 539         wpa_config_write_reg_string(hk, "ctrl_interface",
 540                                     config->ctrl_interface);
 541 #endif /* CONFIG_CTRL_IFACE */
 542
 543         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 544                                    config->eapol_version,
 545                                    DEFAULT_EAPOL_VERSION);
 546         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 547                                    DEFAULT_AP_SCAN);
 548         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 549                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 550         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 551                                    config->dot11RSNAConfigPMKLifetime, 0);
 552         wpa_config_write_reg_dword(hk,
 553                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 554                                    config->dot11RSNAConfigPMKReauthThreshold,
 555                                    0);
 556         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 557                                    config->dot11RSNAConfigSATimeout, 0);
 558         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 559                                    config->update_config,
 560                                    0);
 561 #ifdef CONFIG_WPS
 562         if (!is_nil_uuid(config->uuid)) {
 563                 char buf[40];
 564                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 565                 wpa_config_write_reg_string(hk, "uuid", buf);
 566         }
 567         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 568         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 569         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 570         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 571         wpa_config_write_reg_string(hk, "serial_number",
 572                                     config->serial_number);
 573         wpa_config_write_reg_string(hk, "device_type", config->device_type);
 574         wpa_config_write_reg_string(hk, "config_methods",
 575                                     config->config_methods);
 576         if (WPA_GET_BE32(config->os_version)) {
 577                 char vbuf[10];
 578                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 579                             WPA_GET_BE32(config->os_version));
 580                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 581         }
 582         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 583                                    config->wps_cred_processing, 0);
 584 #endif /* CONFIG_WPS */
 585
 586         return 0;
 587 }
 588
 589
 590 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 591 {
 592         HKEY nhk;
 593         int i, errors = 0;
 594         LONG ret;
 595
 596         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 597         if (ret != ERROR_SUCCESS) {
 598                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 599                            "' for subkey deletion: error 0x%x (%d)", key,
 600                            (unsigned int) ret, (int) GetLastError());
 601                 return 0;
 602         }
 603
 604         for (i = 0; ; i++) {
 605                 TCHAR name[255];
 606                 DWORD namelen;
 607
 608                 namelen = 255;
 609                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 610                                    NULL);
 611
 612                 if (ret == ERROR_NO_MORE_ITEMS)
 613                         break;
 614
 615                 if (ret != ERROR_SUCCESS) {
 616                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 617                                    (unsigned int) ret, (int) GetLastError());
 618                         break;
 619                 }
 620
 621                 if (namelen >= 255)
 622                         namelen = 255 - 1;
 623                 name[namelen] = TEXT('\0');
 624
 625                 ret = RegDeleteKey(nhk, name);
 626                 if (ret != ERROR_SUCCESS) {
 627                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 628                                    (unsigned int) ret, (int) GetLastError());
 629                         errors++;
 630                 }
 631         }
 632
 633         RegCloseKey(nhk);
 634
 635         return errors ? -1 : 0;
 636 }
 637
 638
 639 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 640 {
 641         char *value = wpa_config_get(ssid, field);
 642         if (value == NULL)
 643                 return;
 644         wpa_config_write_reg_string(hk, field, value);
 645         os_free(value);
 646 }
 647
 648
 649 static void write_int(HKEY hk, const char *field, int value, int def)
 650 {
 651         char val[20];
 652         if (value == def)
 653                 return;
 654         os_snprintf(val, sizeof(val), "%d", value);
 655         wpa_config_write_reg_string(hk, field, val);
 656 }
 657
 658
 659 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 660 {
 661         char *value = wpa_config_get(ssid, "bssid");
 662         if (value == NULL)
 663                 return;
 664         wpa_config_write_reg_string(hk, "bssid", value);
 665         os_free(value);
 666 }
 667
 668
 669 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 670 {
 671         char *value = wpa_config_get(ssid, "psk");
 672         if (value == NULL)
 673                 return;
 674         wpa_config_write_reg_string(hk, "psk", value);
 675         os_free(value);
 676 }
 677
 678
 679 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 680 {
 681         char *value;
 682
 683         if (ssid->proto == DEFAULT_PROTO)
 684                 return;
 685
 686         value = wpa_config_get(ssid, "proto");
 687         if (value == NULL)
 688                 return;
 689         if (value[0])
 690                 wpa_config_write_reg_string(hk, "proto", value);
 691         os_free(value);
 692 }
 693
 694
 695 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 696 {
 697         char *value;
 698
 699         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 700                 return;
 701
 702         value = wpa_config_get(ssid, "key_mgmt");
 703         if (value == NULL)
 704                 return;
 705         if (value[0])
 706                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 707         os_free(value);
 708 }
 709
 710
 711 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 712 {
 713         char *value;
 714
 715         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 716                 return;
 717
 718         value = wpa_config_get(ssid, "pairwise");
 719         if (value == NULL)
 720                 return;
 721         if (value[0])
 722                 wpa_config_write_reg_string(hk, "pairwise", value);
 723         os_free(value);
 724 }
 725
 726
 727 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 728 {
 729         char *value;
 730
 731         if (ssid->group_cipher == DEFAULT_GROUP)
 732                 return;
 733
 734         value = wpa_config_get(ssid, "group");
 735         if (value == NULL)
 736                 return;
 737         if (value[0])
 738                 wpa_config_write_reg_string(hk, "group", value);
 739         os_free(value);
 740 }
 741
 742
 743 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 744 {
 745         char *value;
 746
 747         if (ssid->auth_alg == 0)
 748                 return;
 749
 750         value = wpa_config_get(ssid, "auth_alg");
 751         if (value == NULL)
 752                 return;
 753         if (value[0])
 754                 wpa_config_write_reg_string(hk, "auth_alg", value);
 755         os_free(value);
 756 }
 757
 758
 759 #ifdef IEEE8021X_EAPOL
 760 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 761 {
 762         char *value;
 763
 764         value = wpa_config_get(ssid, "eap");
 765         if (value == NULL)
 766                 return;
 767
 768         if (value[0])
 769                 wpa_config_write_reg_string(hk, "eap", value);
 770         os_free(value);
 771 }
 772 #endif /* IEEE8021X_EAPOL */
 773
 774
 775 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 776 {
 777         char field[20], *value;
 778
 779         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 780         value = wpa_config_get(ssid, field);
 781         if (value) {
 782                 wpa_config_write_reg_string(hk, field, value);
 783                 os_free(value);
 784         }
 785 }
 786
 787
 788 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 789 {
 790         int i, errors = 0;
 791         HKEY nhk, netw;
 792         LONG ret;
 793         TCHAR name[5];
 794
 795         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 796         if (ret != ERROR_SUCCESS) {
 797                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 798                            "for subkey addition: error 0x%x (%d)",
 799                            (unsigned int) ret, (int) GetLastError());
 800                 return 0;
 801         }
 802
 803 #ifdef UNICODE
 804         wsprintf(name, L"%04d", id);
 805 #else /* UNICODE */
 806         os_snprintf(name, sizeof(name), "%04d", id);
 807 #endif /* UNICODE */
 808         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 809                              NULL);
 810         RegCloseKey(nhk);
 811         if (ret != ERROR_SUCCESS) {
 812                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 813                            " error 0x%x (%d)",
 814                            name, (unsigned int) ret, (int) GetLastError());
 815                 return -1;
 816         }
 817
 818 #define STR(t) write_str(netw, #t, ssid)
 819 #define INT(t) write_int(netw, #t, ssid->t, 0)
 820 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 821 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 822 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 823
 824         STR(ssid);
 825         INT(scan_ssid);
 826         write_bssid(netw, ssid);
 827         write_psk(netw, ssid);
 828         write_proto(netw, ssid);
 829         write_key_mgmt(netw, ssid);
 830         write_pairwise(netw, ssid);
 831         write_group(netw, ssid);
 832         write_auth_alg(netw, ssid);
 833 #ifdef IEEE8021X_EAPOL
 834         write_eap(netw, ssid);
 835         STR(identity);
 836         STR(anonymous_identity);
 837         STR(password);
 838         STR(ca_cert);
 839         STR(ca_path);
 840         STR(client_cert);
 841         STR(private_key);
 842         STR(private_key_passwd);
 843         STR(dh_file);
 844         STR(subject_match);
 845         STR(altsubject_match);
 846         STR(ca_cert2);
 847         STR(ca_path2);
 848         STR(client_cert2);
 849         STR(private_key2);
 850         STR(private_key2_passwd);
 851         STR(dh_file2);
 852         STR(subject_match2);
 853         STR(altsubject_match2);
 854         STR(phase1);
 855         STR(phase2);
 856         STR(pcsc);
 857         STR(pin);
 858         STR(engine_id);
 859         STR(key_id);
 860         STR(cert_id);
 861         STR(ca_cert_id);
 862         STR(key2_id);
 863         STR(pin2);
 864         STR(engine2_id);
 865         STR(cert2_id);
 866         STR(ca_cert2_id);
 867         INTe(engine);
 868         INTe(engine2);
 869         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 870 #endif /* IEEE8021X_EAPOL */
 871         for (i = 0; i < 4; i++)
 872                 write_wep_key(netw, i, ssid);
 873         INT(wep_tx_keyidx);
 874         INT(priority);
 875 #ifdef IEEE8021X_EAPOL
 876         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 877         STR(pac_file);
 878         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 879 #endif /* IEEE8021X_EAPOL */
 880         INT(mode);
 881         INT(proactive_key_caching);
 882         INT(disabled);
 883         INT(peerkey);
 884 #ifdef CONFIG_IEEE80211W
 885         INT(ieee80211w);
 886 #endif /* CONFIG_IEEE80211W */
 887         STR(id_str);
 888
 889 #undef STR
 890 #undef INT
 891 #undef INT_DEF
 892
 893         RegCloseKey(netw);
 894
 895         return errors ? -1 : 0;
 896 }
 897
 898
 899 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 900 {
 901         HKEY bhk;
 902         LONG ret;
 903         TCHAR *name;
 904
 905         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 906                              &bhk, NULL);
 907         if (ret != ERROR_SUCCESS) {
 908                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 909                            "error 0x%x (%d)",
 910                            (unsigned int) ret, (int) GetLastError());
 911                 return -1;
 912         }
 913
 914         name = wpa_strdup_tchar(blob->name);
 915         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 916                             blob->len);
 917         if (ret != ERROR_SUCCESS) {
 918                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 919                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 920                            (int) GetLastError());
 921                 RegCloseKey(bhk);
 922                 os_free(name);
 923                 return -1;
 924         }
 925         os_free(name);
 926
 927         RegCloseKey(bhk);
 928
 929         return 0;
 930 }
 931
 932
 933 int wpa_config_write(const char *name, struct wpa_config *config)
 934 {
 935         TCHAR buf[256];
 936         HKEY hk;
 937         LONG ret;
 938         int errors = 0;
 939         struct wpa_ssid *ssid;
 940         struct wpa_config_blob *blob;
 941         int id;
 942
 943         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 944
 945 #ifdef UNICODE
 946         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 947 #else /* UNICODE */
 948         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 949 #endif /* UNICODE */
 950
 951         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 952         if (ret != ERROR_SUCCESS) {
 953                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 954                            "configuration registry %s: error %d", buf,
 955                            (int) GetLastError());
 956                 return -1;
 957         }
 958
 959         if (wpa_config_write_global(config, hk)) {
 960                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 961                            "data");
 962                 errors++;
 963         }
 964
 965         wpa_config_delete_subkeys(hk, TEXT("networks"));
 966         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
 967                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
 968                         continue; /* do not save temporary WPS networks */
 969                 if (wpa_config_write_network(hk, ssid, id))
 970                         errors++;
 971         }
 972
 973         RegDeleteKey(hk, TEXT("blobs"));
 974         for (blob = config->blobs; blob; blob = blob->next) {
 975                 if (wpa_config_write_blob(hk, blob))
 976                         errors++;
 977         }
 978
 979         RegCloseKey(hk);
 980
 981         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
 982                    name, errors ? "un" : "");
 983         return errors ? -1 : 0;
 984 }