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