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         wpa_config_read_reg_dword(hk, TEXT("disassoc_low_ack"),
 273                                   (int *) &config->disassoc_low_ack);
 274
 275         return errors ? -1 : 0;
 276 }
 277
 278
 279 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 280                                                  int id)
 281 {
 282         HKEY nhk;
 283         LONG ret;
 284         DWORD i;
 285         struct wpa_ssid *ssid;
 286         int errors = 0;
 287
 288         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 289         if (ret != ERROR_SUCCESS) {
 290                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 291                            "network '" TSTR "'", netw);
 292                 return NULL;
 293         }
 294
 295         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 296         ssid = os_zalloc(sizeof(*ssid));
 297         if (ssid == NULL) {
 298                 RegCloseKey(nhk);
 299                 return NULL;
 300         }
 301         ssid->id = id;
 302
 303         wpa_config_set_network_defaults(ssid);
 304
 305         for (i = 0; ; i++) {
 306                 TCHAR name[255], data[1024];
 307                 DWORD namelen, datalen, type;
 308
 309                 namelen = 255;
 310                 datalen = sizeof(data);
 311                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 312                                    (LPBYTE) data, &datalen);
 313
 314                 if (ret == ERROR_NO_MORE_ITEMS)
 315                         break;
 316
 317                 if (ret != ERROR_SUCCESS) {
 318                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 319                                    (unsigned int) ret);
 320                         break;
 321                 }
 322
 323                 if (namelen >= 255)
 324                         namelen = 255 - 1;
 325                 name[namelen] = TEXT('\0');
 326
 327                 if (datalen >= 1024)
 328                         datalen = 1024 - 1;
 329                 data[datalen] = TEXT('\0');
 330
 331                 wpa_unicode2ascii_inplace(name);
 332                 wpa_unicode2ascii_inplace(data);
 333                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 334                         errors++;
 335         }
 336
 337         RegCloseKey(nhk);
 338
 339         if (ssid->passphrase) {
 340                 if (ssid->psk_set) {
 341                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 342                                    "configured for network '" TSTR "'.", netw);
 343                         errors++;
 344                 }
 345                 wpa_config_update_psk(ssid);
 346         }
 347
 348         if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
 349                                WPA_KEY_MGMT_PSK_SHA256)) &&
 350             !ssid->psk_set) {
 351                 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
 352                            "but no PSK configured for network '" TSTR "'.",
 353                            netw);
 354                 errors++;
 355         }
 356
 357         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 358             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 359             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 360                 /* Group cipher cannot be stronger than the pairwise cipher. */
 361                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 362                            "list since it was not allowed for pairwise "
 363                            "cipher for network '" TSTR "'.", netw);
 364                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 365         }
 366
 367         if (errors) {
 368                 wpa_config_free_ssid(ssid);
 369                 ssid = NULL;
 370         }
 371
 372         return ssid;
 373 }
 374
 375
 376 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 377 {
 378         HKEY nhk;
 379         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 380         int errors = 0;
 381         LONG ret;
 382         DWORD i;
 383
 384         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 385                            &nhk);
 386         if (ret != ERROR_SUCCESS) {
 387                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 388                            "registry key");
 389                 return -1;
 390         }
 391
 392         for (i = 0; ; i++) {
 393                 TCHAR name[255];
 394                 DWORD namelen;
 395
 396                 namelen = 255;
 397                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 398                                    NULL);
 399
 400                 if (ret == ERROR_NO_MORE_ITEMS)
 401                         break;
 402
 403                 if (ret != ERROR_SUCCESS) {
 404                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 405                                    (unsigned int) ret);
 406                         break;
 407                 }
 408
 409                 if (namelen >= 255)
 410                         namelen = 255 - 1;
 411                 name[namelen] = '\0';
 412
 413                 ssid = wpa_config_read_network(nhk, name, i);
 414                 if (ssid == NULL) {
 415                         wpa_printf(MSG_ERROR, "Failed to parse network "
 416                                    "profile '%s'.", name);
 417                         errors++;
 418                         continue;
 419                 }
 420                 if (head == NULL) {
 421                         head = tail = ssid;
 422                 } else {
 423                         tail->next = ssid;
 424                         tail = ssid;
 425                 }
 426                 if (wpa_config_add_prio_network(config, ssid)) {
 427                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 428                                    "'%s' to priority list.", name);
 429                         errors++;
 430                         continue;
 431                 }
 432         }
 433
 434         RegCloseKey(nhk);
 435
 436         config->ssid = head;
 437
 438         return errors ? -1 : 0;
 439 }
 440
 441
 442 struct wpa_config * wpa_config_read(const char *name)
 443 {
 444         TCHAR buf[256];
 445         int errors = 0;
 446         struct wpa_config *config;
 447         HKEY hk;
 448         LONG ret;
 449
 450         config = wpa_config_alloc_empty(NULL, NULL);
 451         if (config == NULL)
 452                 return NULL;
 453         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 454
 455 #ifdef UNICODE
 456         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 457 #else /* UNICODE */
 458         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 459 #endif /* UNICODE */
 460
 461         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 462         if (ret != ERROR_SUCCESS) {
 463                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 464                            "configuration registry HKLM\\" TSTR, buf);
 465                 os_free(config);
 466                 return NULL;
 467         }
 468
 469         if (wpa_config_read_global(config, hk))
 470                 errors++;
 471
 472         if (wpa_config_read_networks(config, hk))
 473                 errors++;
 474
 475         if (wpa_config_read_blobs(config, hk))
 476                 errors++;
 477
 478         wpa_config_debug_dump_networks(config);
 479
 480         RegCloseKey(hk);
 481
 482         if (errors) {
 483                 wpa_config_free(config);
 484                 config = NULL;
 485         }
 486
 487         return config;
 488 }
 489
 490
 491 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 492                                       int def)
 493 {
 494         LONG ret;
 495         DWORD _val = val;
 496
 497         if (val == def) {
 498                 RegDeleteValue(hk, name);
 499                 return 0;
 500         }
 501
 502         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 503                             sizeof(_val));
 504         if (ret != ERROR_SUCCESS) {
 505                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 506                            name, val, (int) GetLastError());
 507                 return -1;
 508         }
 509
 510         return 0;
 511 }
 512
 513
 514 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 515                                        const char *val)
 516 {
 517         LONG ret;
 518         TCHAR *_name, *_val;
 519
 520         _name = wpa_strdup_tchar(name);
 521         if (_name == NULL)
 522                 return -1;
 523
 524         if (val == NULL) {
 525                 RegDeleteValue(hk, _name);
 526                 os_free(_name);
 527                 return 0;
 528         }
 529
 530         _val = wpa_strdup_tchar(val);
 531         if (_val == NULL) {
 532                 os_free(_name);
 533                 return -1;
 534         }
 535         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 536                             (os_strlen(val) + 1) * sizeof(TCHAR));
 537         if (ret != ERROR_SUCCESS) {
 538                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 539                            "error %d", name, val, (int) GetLastError());
 540                 os_free(_name);
 541                 os_free(_val);
 542                 return -1;
 543         }
 544
 545         os_free(_name);
 546         os_free(_val);
 547         return 0;
 548 }
 549
 550
 551 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 552 {
 553 #ifdef CONFIG_CTRL_IFACE
 554         wpa_config_write_reg_string(hk, "ctrl_interface",
 555                                     config->ctrl_interface);
 556 #endif /* CONFIG_CTRL_IFACE */
 557
 558         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 559                                    config->eapol_version,
 560                                    DEFAULT_EAPOL_VERSION);
 561         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 562                                    DEFAULT_AP_SCAN);
 563         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 564                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 565         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 566                                    config->dot11RSNAConfigPMKLifetime, 0);
 567         wpa_config_write_reg_dword(hk,
 568                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 569                                    config->dot11RSNAConfigPMKReauthThreshold,
 570                                    0);
 571         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 572                                    config->dot11RSNAConfigSATimeout, 0);
 573         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 574                                    config->update_config,
 575                                    0);
 576 #ifdef CONFIG_WPS
 577         if (!is_nil_uuid(config->uuid)) {
 578                 char buf[40];
 579                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 580                 wpa_config_write_reg_string(hk, "uuid", buf);
 581         }
 582         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 583         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 584         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 585         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 586         wpa_config_write_reg_string(hk, "serial_number",
 587                                     config->serial_number);
 588         wpa_config_write_reg_string(hk, "device_type", config->device_type);
 589         wpa_config_write_reg_string(hk, "config_methods",
 590                                     config->config_methods);
 591         if (WPA_GET_BE32(config->os_version)) {
 592                 char vbuf[10];
 593                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 594                             WPA_GET_BE32(config->os_version));
 595                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 596         }
 597         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 598                                    config->wps_cred_processing, 0);
 599 #endif /* CONFIG_WPS */
 600 #ifdef CONFIG_P2P
 601         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 602                                     config->p2p_ssid_postfix);
 603         wpa_config_write_reg_dword(hk, TEXT("p2p_group_idle"),
 604                                    config->p2p_group_idle, 0);
 605 #endif /* CONFIG_P2P */
 606
 607         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 608                                    config->bss_max_count,
 609                                    DEFAULT_BSS_MAX_COUNT);
 610         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 611                                    config->filter_ssids, 0);
 612         wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
 613                                    config->max_num_sta, DEFAULT_MAX_NUM_STA);
 614         wpa_config_write_reg_dword(hk, TEXT("disassoc_low_ack"),
 615                                    config->disassoc_low_ack, 0);
 616
 617         return 0;
 618 }
 619
 620
 621 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 622 {
 623         HKEY nhk;
 624         int i, errors = 0;
 625         LONG ret;
 626
 627         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 628         if (ret != ERROR_SUCCESS) {
 629                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 630                            "' for subkey deletion: error 0x%x (%d)", key,
 631                            (unsigned int) ret, (int) GetLastError());
 632                 return 0;
 633         }
 634
 635         for (i = 0; ; i++) {
 636                 TCHAR name[255];
 637                 DWORD namelen;
 638
 639                 namelen = 255;
 640                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 641                                    NULL);
 642
 643                 if (ret == ERROR_NO_MORE_ITEMS)
 644                         break;
 645
 646                 if (ret != ERROR_SUCCESS) {
 647                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 648                                    (unsigned int) ret, (int) GetLastError());
 649                         break;
 650                 }
 651
 652                 if (namelen >= 255)
 653                         namelen = 255 - 1;
 654                 name[namelen] = TEXT('\0');
 655
 656                 ret = RegDeleteKey(nhk, name);
 657                 if (ret != ERROR_SUCCESS) {
 658                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 659                                    (unsigned int) ret, (int) GetLastError());
 660                         errors++;
 661                 }
 662         }
 663
 664         RegCloseKey(nhk);
 665
 666         return errors ? -1 : 0;
 667 }
 668
 669
 670 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 671 {
 672         char *value = wpa_config_get(ssid, field);
 673         if (value == NULL)
 674                 return;
 675         wpa_config_write_reg_string(hk, field, value);
 676         os_free(value);
 677 }
 678
 679
 680 static void write_int(HKEY hk, const char *field, int value, int def)
 681 {
 682         char val[20];
 683         if (value == def)
 684                 return;
 685         os_snprintf(val, sizeof(val), "%d", value);
 686         wpa_config_write_reg_string(hk, field, val);
 687 }
 688
 689
 690 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 691 {
 692         char *value = wpa_config_get(ssid, "bssid");
 693         if (value == NULL)
 694                 return;
 695         wpa_config_write_reg_string(hk, "bssid", value);
 696         os_free(value);
 697 }
 698
 699
 700 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 701 {
 702         char *value = wpa_config_get(ssid, "psk");
 703         if (value == NULL)
 704                 return;
 705         wpa_config_write_reg_string(hk, "psk", value);
 706         os_free(value);
 707 }
 708
 709
 710 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 711 {
 712         char *value;
 713
 714         if (ssid->proto == DEFAULT_PROTO)
 715                 return;
 716
 717         value = wpa_config_get(ssid, "proto");
 718         if (value == NULL)
 719                 return;
 720         if (value[0])
 721                 wpa_config_write_reg_string(hk, "proto", value);
 722         os_free(value);
 723 }
 724
 725
 726 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 727 {
 728         char *value;
 729
 730         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 731                 return;
 732
 733         value = wpa_config_get(ssid, "key_mgmt");
 734         if (value == NULL)
 735                 return;
 736         if (value[0])
 737                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 738         os_free(value);
 739 }
 740
 741
 742 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 743 {
 744         char *value;
 745
 746         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 747                 return;
 748
 749         value = wpa_config_get(ssid, "pairwise");
 750         if (value == NULL)
 751                 return;
 752         if (value[0])
 753                 wpa_config_write_reg_string(hk, "pairwise", value);
 754         os_free(value);
 755 }
 756
 757
 758 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 759 {
 760         char *value;
 761
 762         if (ssid->group_cipher == DEFAULT_GROUP)
 763                 return;
 764
 765         value = wpa_config_get(ssid, "group");
 766         if (value == NULL)
 767                 return;
 768         if (value[0])
 769                 wpa_config_write_reg_string(hk, "group", value);
 770         os_free(value);
 771 }
 772
 773
 774 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 775 {
 776         char *value;
 777
 778         if (ssid->auth_alg == 0)
 779                 return;
 780
 781         value = wpa_config_get(ssid, "auth_alg");
 782         if (value == NULL)
 783                 return;
 784         if (value[0])
 785                 wpa_config_write_reg_string(hk, "auth_alg", value);
 786         os_free(value);
 787 }
 788
 789
 790 #ifdef IEEE8021X_EAPOL
 791 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 792 {
 793         char *value;
 794
 795         value = wpa_config_get(ssid, "eap");
 796         if (value == NULL)
 797                 return;
 798
 799         if (value[0])
 800                 wpa_config_write_reg_string(hk, "eap", value);
 801         os_free(value);
 802 }
 803 #endif /* IEEE8021X_EAPOL */
 804
 805
 806 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 807 {
 808         char field[20], *value;
 809
 810         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 811         value = wpa_config_get(ssid, field);
 812         if (value) {
 813                 wpa_config_write_reg_string(hk, field, value);
 814                 os_free(value);
 815         }
 816 }
 817
 818
 819 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 820 {
 821         int i, errors = 0;
 822         HKEY nhk, netw;
 823         LONG ret;
 824         TCHAR name[5];
 825
 826         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 827         if (ret != ERROR_SUCCESS) {
 828                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 829                            "for subkey addition: error 0x%x (%d)",
 830                            (unsigned int) ret, (int) GetLastError());
 831                 return 0;
 832         }
 833
 834 #ifdef UNICODE
 835         wsprintf(name, L"%04d", id);
 836 #else /* UNICODE */
 837         os_snprintf(name, sizeof(name), "%04d", id);
 838 #endif /* UNICODE */
 839         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 840                              NULL);
 841         RegCloseKey(nhk);
 842         if (ret != ERROR_SUCCESS) {
 843                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 844                            " error 0x%x (%d)",
 845                            name, (unsigned int) ret, (int) GetLastError());
 846                 return -1;
 847         }
 848
 849 #define STR(t) write_str(netw, #t, ssid)
 850 #define INT(t) write_int(netw, #t, ssid->t, 0)
 851 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 852 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 853 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 854
 855         STR(ssid);
 856         INT(scan_ssid);
 857         write_bssid(netw, ssid);
 858         write_psk(netw, ssid);
 859         write_proto(netw, ssid);
 860         write_key_mgmt(netw, ssid);
 861         write_pairwise(netw, ssid);
 862         write_group(netw, ssid);
 863         write_auth_alg(netw, ssid);
 864 #ifdef IEEE8021X_EAPOL
 865         write_eap(netw, ssid);
 866         STR(identity);
 867         STR(anonymous_identity);
 868         STR(password);
 869         STR(ca_cert);
 870         STR(ca_path);
 871         STR(client_cert);
 872         STR(private_key);
 873         STR(private_key_passwd);
 874         STR(dh_file);
 875         STR(subject_match);
 876         STR(altsubject_match);
 877         STR(ca_cert2);
 878         STR(ca_path2);
 879         STR(client_cert2);
 880         STR(private_key2);
 881         STR(private_key2_passwd);
 882         STR(dh_file2);
 883         STR(subject_match2);
 884         STR(altsubject_match2);
 885         STR(phase1);
 886         STR(phase2);
 887         STR(pcsc);
 888         STR(pin);
 889         STR(engine_id);
 890         STR(key_id);
 891         STR(cert_id);
 892         STR(ca_cert_id);
 893         STR(key2_id);
 894         STR(pin2);
 895         STR(engine2_id);
 896         STR(cert2_id);
 897         STR(ca_cert2_id);
 898         INTe(engine);
 899         INTe(engine2);
 900         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 901 #endif /* IEEE8021X_EAPOL */
 902         for (i = 0; i < 4; i++)
 903                 write_wep_key(netw, i, ssid);
 904         INT(wep_tx_keyidx);
 905         INT(priority);
 906 #ifdef IEEE8021X_EAPOL
 907         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 908         STR(pac_file);
 909         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 910 #endif /* IEEE8021X_EAPOL */
 911         INT(mode);
 912         INT(proactive_key_caching);
 913         INT(disabled);
 914         INT(peerkey);
 915 #ifdef CONFIG_IEEE80211W
 916         INT(ieee80211w);
 917 #endif /* CONFIG_IEEE80211W */
 918         STR(id_str);
 919
 920 #undef STR
 921 #undef INT
 922 #undef INT_DEF
 923
 924         RegCloseKey(netw);
 925
 926         return errors ? -1 : 0;
 927 }
 928
 929
 930 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 931 {
 932         HKEY bhk;
 933         LONG ret;
 934         TCHAR *name;
 935
 936         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 937                              &bhk, NULL);
 938         if (ret != ERROR_SUCCESS) {
 939                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 940                            "error 0x%x (%d)",
 941                            (unsigned int) ret, (int) GetLastError());
 942                 return -1;
 943         }
 944
 945         name = wpa_strdup_tchar(blob->name);
 946         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 947                             blob->len);
 948         if (ret != ERROR_SUCCESS) {
 949                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 950                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 951                            (int) GetLastError());
 952                 RegCloseKey(bhk);
 953                 os_free(name);
 954                 return -1;
 955         }
 956         os_free(name);
 957
 958         RegCloseKey(bhk);
 959
 960         return 0;
 961 }
 962
 963
 964 int wpa_config_write(const char *name, struct wpa_config *config)
 965 {
 966         TCHAR buf[256];
 967         HKEY hk;
 968         LONG ret;
 969         int errors = 0;
 970         struct wpa_ssid *ssid;
 971         struct wpa_config_blob *blob;
 972         int id;
 973
 974         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 975
 976 #ifdef UNICODE
 977         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 978 #else /* UNICODE */
 979         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 980 #endif /* UNICODE */
 981
 982         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 983         if (ret != ERROR_SUCCESS) {
 984                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 985                            "configuration registry %s: error %d", buf,
 986                            (int) GetLastError());
 987                 return -1;
 988         }
 989
 990         if (wpa_config_write_global(config, hk)) {
 991                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 992                            "data");
 993                 errors++;
 994         }
 995
 996         wpa_config_delete_subkeys(hk, TEXT("networks"));
 997         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
 998                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
 999                         continue; /* do not save temporary WPS networks */
1000                 if (wpa_config_write_network(hk, ssid, id))
1001                         errors++;
1002         }
1003
1004         RegDeleteKey(hk, TEXT("blobs"));
1005         for (blob = config->blobs; blob; blob = blob->next) {
1006                 if (wpa_config_write_blob(hk, blob))
1007                         errors++;
1008         }
1009
1010         RegCloseKey(hk);
1011
1012         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1013                    name, errors ? "un" : "");
1014         return errors ? -1 : 0;
1015 }