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