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 software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  *
   8  * This file implements a configuration backend for Windows registry. All the
   9  * configuration information is stored in the registry and the format for
  10  * network configuration fields is same as described in the sample
  11  * configuration file, wpa_supplicant.conf.
  12  *
  13  * Configuration data is in
  14  * \a HKEY_LOCAL_MACHINE\\SOFTWARE\\%wpa_supplicant\\configs
  15  * key. Each configuration profile has its own key under this. In terms of text
  16  * files, each profile would map to a separate text file with possibly multiple
  17  * networks. Under each profile, there is a networks key that lists all
  18  * networks as a subkey. Each network has set of values in the same way as
  19  * network block in the configuration file. In addition, blobs subkey has
  20  * possible blobs as values.
  21  *
  22  * Example network configuration block:
  23  * \verbatim
  24 HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
  25    ssid="example"
  26    key_mgmt=WPA-PSK
  27 \endverbatim
  28  */
  29
  30 #include "includes.h"
  31
  32 #include "common.h"
  33 #include "uuid.h"
  34 #include "config.h"
  35
  36 #ifndef WPA_KEY_ROOT
  37 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
  38 #endif
  39 #ifndef WPA_KEY_PREFIX
  40 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
  41 #endif
  42
  43 #ifdef UNICODE
  44 #define TSTR "%S"
  45 #else /* UNICODE */
  46 #define TSTR "%s"
  47 #endif /* UNICODE */
  48
  49
  50 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
  51 {
  52         struct wpa_config_blob *blob;
  53         int errors = 0;
  54         HKEY bhk;
  55         LONG ret;
  56         DWORD i;
  57
  58         ret = RegOpenKeyEx(hk, TEXT("blobs"), 0, KEY_QUERY_VALUE, &bhk);
  59         if (ret != ERROR_SUCCESS) {
  60                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
  61                            "blobs key");
  62                 return 0; /* assume no blobs */
  63         }
  64
  65         for (i = 0; ; i++) {
  66 #define TNAMELEN 255
  67                 TCHAR name[TNAMELEN];
  68                 char data[4096];
  69                 DWORD namelen, datalen, type;
  70
  71                 namelen = TNAMELEN;
  72                 datalen = sizeof(data);
  73                 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
  74                                    (LPBYTE) data, &datalen);
  75
  76                 if (ret == ERROR_NO_MORE_ITEMS)
  77                         break;
  78
  79                 if (ret != ERROR_SUCCESS) {
  80                         wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
  81                                    (unsigned int) ret);
  82                         break;
  83                 }
  84
  85                 if (namelen >= TNAMELEN)
  86                         namelen = TNAMELEN - 1;
  87                 name[namelen] = TEXT('\0');
  88                 wpa_unicode2ascii_inplace(name);
  89
  90                 if (datalen >= sizeof(data))
  91                         datalen = sizeof(data) - 1;
  92
  93                 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
  94                            (int) i, name, (int) datalen);
  95
  96                 blob = os_zalloc(sizeof(*blob));
  97                 if (blob == NULL) {
  98                         errors++;
  99                         break;
 100                 }
 101                 blob->name = os_strdup((char *) name);
 102                 blob->data = os_memdup(data, datalen);
 103                 if (blob->name == NULL || blob->data == NULL) {
 104                         wpa_config_free_blob(blob);
 105                         errors++;
 106                         break;
 107                 }
 108                 blob->len = datalen;
 109
 110                 wpa_config_set_blob(config, blob);
 111         }
 112
 113         RegCloseKey(bhk);
 114
 115         return errors ? -1 : 0;
 116 }
 117
 118
 119 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
 120 {
 121         DWORD val, buflen;
 122         LONG ret;
 123
 124         buflen = sizeof(val);
 125         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
 126         if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
 127                 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
 128                 *_val = val;
 129                 return 0;
 130         }
 131
 132         return -1;
 133 }
 134
 135
 136 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
 137 {
 138         DWORD buflen;
 139         LONG ret;
 140         TCHAR *val;
 141
 142         buflen = 0;
 143         ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
 144         if (ret != ERROR_SUCCESS)
 145                 return NULL;
 146         val = os_malloc(buflen);
 147         if (val == NULL)
 148                 return NULL;
 149
 150         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
 151         if (ret != ERROR_SUCCESS) {
 152                 os_free(val);
 153                 return NULL;
 154         }
 155
 156         wpa_unicode2ascii_inplace(val);
 157         wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
 158         return (char *) val;
 159 }
 160
 161
 162 #ifdef CONFIG_WPS
 163 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
 164 {
 165         char *str;
 166         int ret = 0;
 167
 168         str = wpa_config_read_reg_string(hk, TEXT("uuid"));
 169         if (str == NULL)
 170                 return 0;
 171
 172         if (uuid_str2bin(str, config->uuid))
 173                 ret = -1;
 174
 175         os_free(str);
 176
 177         return ret;
 178 }
 179
 180
 181 static int wpa_config_read_global_os_version(struct wpa_config *config,
 182                                              HKEY hk)
 183 {
 184         char *str;
 185         int ret = 0;
 186
 187         str = wpa_config_read_reg_string(hk, TEXT("os_version"));
 188         if (str == NULL)
 189                 return 0;
 190
 191         if (hexstr2bin(str, config->os_version, 4))
 192                 ret = -1;
 193
 194         os_free(str);
 195
 196         return ret;
 197 }
 198 #endif /* CONFIG_WPS */
 199
 200
 201 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 202 {
 203         int errors = 0;
 204         int val;
 205
 206         wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
 207         wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
 208                                   &config->fast_reauth);
 209         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 210                                   (int *) &config->dot11RSNAConfigPMKLifetime);
 211         wpa_config_read_reg_dword(hk,
 212                                   TEXT("dot11RSNAConfigPMKReauthThreshold"),
 213                                   (int *)
 214                                   &config->dot11RSNAConfigPMKReauthThreshold);
 215         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 216                                   (int *) &config->dot11RSNAConfigSATimeout);
 217         wpa_config_read_reg_dword(hk, TEXT("update_config"),
 218                                   &config->update_config);
 219
 220         if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
 221                                       &config->eapol_version) == 0) {
 222                 if (config->eapol_version < 1 ||
 223                     config->eapol_version > 2) {
 224                         wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
 225                                    config->eapol_version);
 226                         errors++;
 227                 }
 228         }
 229
 230         config->ctrl_interface = wpa_config_read_reg_string(
 231                 hk, TEXT("ctrl_interface"));
 232
 233 #ifdef CONFIG_WPS
 234         if (wpa_config_read_global_uuid(config, hk))
 235                 errors++;
 236         wpa_config_read_reg_dword(hk, TEXT("auto_uuid"), &config->auto_uuid);
 237         config->device_name = wpa_config_read_reg_string(
 238                 hk, TEXT("device_name"));
 239         config->manufacturer = wpa_config_read_reg_string(
 240                 hk, TEXT("manufacturer"));
 241         config->model_name = wpa_config_read_reg_string(
 242                 hk, TEXT("model_name"));
 243         config->serial_number = wpa_config_read_reg_string(
 244                 hk, TEXT("serial_number"));
 245         {
 246                 char *t = wpa_config_read_reg_string(
 247                         hk, TEXT("device_type"));
 248                 if (t && wps_dev_type_str2bin(t, config->device_type))
 249                         errors++;
 250                 os_free(t);
 251         }
 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         wpa_config_read_reg_dword(hk, TEXT("wps_cred_add_sae"),
 259                                   &config->wps_cred_add_sae);
 260 #endif /* CONFIG_WPS */
 261 #ifdef CONFIG_P2P
 262         config->p2p_ssid_postfix = wpa_config_read_reg_string(
 263                 hk, TEXT("p2p_ssid_postfix"));
 264         wpa_config_read_reg_dword(hk, TEXT("p2p_group_idle"),
 265                                   (int *) &config->p2p_group_idle);
 266 #endif /* CONFIG_P2P */
 267
 268         wpa_config_read_reg_dword(hk, TEXT("bss_max_count"),
 269                                   (int *) &config->bss_max_count);
 270         wpa_config_read_reg_dword(hk, TEXT("filter_ssids"),
 271                                   &config->filter_ssids);
 272         wpa_config_read_reg_dword(hk, TEXT("max_num_sta"),
 273                                   (int *) &config->max_num_sta);
 274         wpa_config_read_reg_dword(hk, TEXT("disassoc_low_ack"),
 275                                   (int *) &config->disassoc_low_ack);
 276
 277         wpa_config_read_reg_dword(hk, TEXT("okc"), &config->okc);
 278         wpa_config_read_reg_dword(hk, TEXT("pmf"), &val);
 279         config->pmf = val;
 280
 281         return errors ? -1 : 0;
 282 }
 283
 284
 285 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 286                                                  int id)
 287 {
 288         HKEY nhk;
 289         LONG ret;
 290         DWORD i;
 291         struct wpa_ssid *ssid;
 292         int errors = 0;
 293
 294         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 295         if (ret != ERROR_SUCCESS) {
 296                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 297                            "network '" TSTR "'", netw);
 298                 return NULL;
 299         }
 300
 301         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 302         ssid = os_zalloc(sizeof(*ssid));
 303         if (ssid == NULL) {
 304                 RegCloseKey(nhk);
 305                 return NULL;
 306         }
 307         dl_list_init(&ssid->psk_list);
 308         ssid->id = id;
 309
 310         wpa_config_set_network_defaults(ssid);
 311
 312         for (i = 0; ; i++) {
 313                 TCHAR name[255], data[1024];
 314                 DWORD namelen, datalen, type;
 315
 316                 namelen = 255;
 317                 datalen = sizeof(data);
 318                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 319                                    (LPBYTE) data, &datalen);
 320
 321                 if (ret == ERROR_NO_MORE_ITEMS)
 322                         break;
 323
 324                 if (ret != ERROR_SUCCESS) {
 325                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 326                                    (unsigned int) ret);
 327                         break;
 328                 }
 329
 330                 if (namelen >= 255)
 331                         namelen = 255 - 1;
 332                 name[namelen] = TEXT('\0');
 333
 334                 if (datalen >= 1024)
 335                         datalen = 1024 - 1;
 336                 data[datalen] = TEXT('\0');
 337
 338                 wpa_unicode2ascii_inplace(name);
 339                 wpa_unicode2ascii_inplace(data);
 340                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 341                         errors++;
 342         }
 343
 344         RegCloseKey(nhk);
 345
 346         if (ssid->passphrase) {
 347                 if (ssid->psk_set) {
 348                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 349                                    "configured for network '" TSTR "'.", netw);
 350                         errors++;
 351                 }
 352                 wpa_config_update_psk(ssid);
 353         }
 354
 355         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 356             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 357             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 358                 /* Group cipher cannot be stronger than the pairwise cipher. */
 359                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 360                            "list since it was not allowed for pairwise "
 361                            "cipher for network '" TSTR "'.", netw);
 362                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 363         }
 364
 365         if (errors) {
 366                 wpa_config_free_ssid(ssid);
 367                 ssid = NULL;
 368         }
 369
 370         return ssid;
 371 }
 372
 373
 374 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 375 {
 376         HKEY nhk;
 377         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 378         int errors = 0;
 379         LONG ret;
 380         DWORD i;
 381
 382         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 383                            &nhk);
 384         if (ret != ERROR_SUCCESS) {
 385                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 386                            "registry key");
 387                 return -1;
 388         }
 389
 390         for (i = 0; ; i++) {
 391                 TCHAR name[255];
 392                 DWORD namelen;
 393
 394                 namelen = 255;
 395                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 396                                    NULL);
 397
 398                 if (ret == ERROR_NO_MORE_ITEMS)
 399                         break;
 400
 401                 if (ret != ERROR_SUCCESS) {
 402                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 403                                    (unsigned int) ret);
 404                         break;
 405                 }
 406
 407                 if (namelen >= 255)
 408                         namelen = 255 - 1;
 409                 name[namelen] = '\0';
 410
 411                 ssid = wpa_config_read_network(nhk, name, i);
 412                 if (ssid == NULL) {
 413                         wpa_printf(MSG_ERROR, "Failed to parse network "
 414                                    "profile '%s'.", name);
 415                         errors++;
 416                         continue;
 417                 }
 418                 if (head == NULL) {
 419                         head = tail = ssid;
 420                 } else {
 421                         tail->next = ssid;
 422                         tail = ssid;
 423                 }
 424                 if (wpa_config_add_prio_network(config, ssid)) {
 425                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 426                                    "'%s' to priority list.", name);
 427                         errors++;
 428                         continue;
 429                 }
 430         }
 431
 432         RegCloseKey(nhk);
 433
 434         config->ssid = head;
 435
 436         return errors ? -1 : 0;
 437 }
 438
 439
 440 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
 441 {
 442         TCHAR buf[256];
 443         int errors = 0;
 444         struct wpa_config *config;
 445         HKEY hk;
 446         LONG ret;
 447
 448         if (name == NULL)
 449                 return NULL;
 450         if (cfgp)
 451                 config = cfgp;
 452         else
 453                 config = wpa_config_alloc_empty(NULL, NULL);
 454         if (config == NULL)
 455                 return NULL;
 456         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 457
 458 #ifdef UNICODE
 459         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 460 #else /* UNICODE */
 461         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 462 #endif /* UNICODE */
 463
 464         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 465         if (ret != ERROR_SUCCESS) {
 466                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 467                            "configuration registry HKLM\\" TSTR, buf);
 468                 os_free(config);
 469                 return NULL;
 470         }
 471
 472         if (wpa_config_read_global(config, hk))
 473                 errors++;
 474
 475         if (wpa_config_read_networks(config, hk))
 476                 errors++;
 477
 478         if (wpa_config_read_blobs(config, hk))
 479                 errors++;
 480
 481         wpa_config_debug_dump_networks(config);
 482
 483         RegCloseKey(hk);
 484
 485         if (errors) {
 486                 wpa_config_free(config);
 487                 config = NULL;
 488         }
 489
 490         return config;
 491 }
 492
 493
 494 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 495                                       int def)
 496 {
 497         LONG ret;
 498         DWORD _val = val;
 499
 500         if (val == def) {
 501                 RegDeleteValue(hk, name);
 502                 return 0;
 503         }
 504
 505         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 506                             sizeof(_val));
 507         if (ret != ERROR_SUCCESS) {
 508                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 509                            name, val, (int) GetLastError());
 510                 return -1;
 511         }
 512
 513         return 0;
 514 }
 515
 516
 517 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 518                                        const char *val)
 519 {
 520         LONG ret;
 521         TCHAR *_name, *_val;
 522
 523         _name = wpa_strdup_tchar(name);
 524         if (_name == NULL)
 525                 return -1;
 526
 527         if (val == NULL) {
 528                 RegDeleteValue(hk, _name);
 529                 os_free(_name);
 530                 return 0;
 531         }
 532
 533         _val = wpa_strdup_tchar(val);
 534         if (_val == NULL) {
 535                 os_free(_name);
 536                 return -1;
 537         }
 538         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 539                             (os_strlen(val) + 1) * sizeof(TCHAR));
 540         if (ret != ERROR_SUCCESS) {
 541                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 542                            "error %d", name, val, (int) GetLastError());
 543                 os_free(_name);
 544                 os_free(_val);
 545                 return -1;
 546         }
 547
 548         os_free(_name);
 549         os_free(_val);
 550         return 0;
 551 }
 552
 553
 554 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 555 {
 556 #ifdef CONFIG_CTRL_IFACE
 557         wpa_config_write_reg_string(hk, "ctrl_interface",
 558                                     config->ctrl_interface);
 559 #endif /* CONFIG_CTRL_IFACE */
 560
 561         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 562                                    config->eapol_version,
 563                                    DEFAULT_EAPOL_VERSION);
 564         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 565                                    DEFAULT_AP_SCAN);
 566         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 567                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 568         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 569                                    config->dot11RSNAConfigPMKLifetime, 0);
 570         wpa_config_write_reg_dword(hk,
 571                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 572                                    config->dot11RSNAConfigPMKReauthThreshold,
 573                                    0);
 574         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 575                                    config->dot11RSNAConfigSATimeout, 0);
 576         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 577                                    config->update_config,
 578                                    0);
 579 #ifdef CONFIG_WPS
 580         if (!is_nil_uuid(config->uuid)) {
 581                 char buf[40];
 582                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 583                 wpa_config_write_reg_string(hk, "uuid", buf);
 584         }
 585         wpa_config_write_reg_dword(hk, TEXT("auto_uuid"), config->auto_uuid,
 586                                    0);
 587         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 588         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 589         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 590         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 591         wpa_config_write_reg_string(hk, "serial_number",
 592                                     config->serial_number);
 593         {
 594                 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
 595                 buf = wps_dev_type_bin2str(config->device_type,
 596                                            _buf, sizeof(_buf));
 597                 wpa_config_write_reg_string(hk, "device_type", buf);
 598         }
 599         wpa_config_write_reg_string(hk, "config_methods",
 600                                     config->config_methods);
 601         if (WPA_GET_BE32(config->os_version)) {
 602                 char vbuf[10];
 603                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 604                             WPA_GET_BE32(config->os_version));
 605                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 606         }
 607         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 608                                    config->wps_cred_processing, 0);
 609         wpa_config_write_reg_dword(hk, TEXT("wps_cred_add_sae"),
 610                                    config->wps_cred_add_sae, 0);
 611 #endif /* CONFIG_WPS */
 612 #ifdef CONFIG_P2P
 613         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 614                                     config->p2p_ssid_postfix);
 615         wpa_config_write_reg_dword(hk, TEXT("p2p_group_idle"),
 616                                    config->p2p_group_idle, 0);
 617 #endif /* CONFIG_P2P */
 618
 619         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 620                                    config->bss_max_count,
 621                                    DEFAULT_BSS_MAX_COUNT);
 622         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 623                                    config->filter_ssids, 0);
 624         wpa_config_write_reg_dword(hk, TEXT("max_num_sta"),
 625                                    config->max_num_sta, DEFAULT_MAX_NUM_STA);
 626         wpa_config_write_reg_dword(hk, TEXT("ap_isolate"),
 627                                    config->ap_isolate, DEFAULT_AP_ISOLATE);
 628         wpa_config_write_reg_dword(hk, TEXT("disassoc_low_ack"),
 629                                    config->disassoc_low_ack, 0);
 630
 631         wpa_config_write_reg_dword(hk, TEXT("okc"), config->okc, 0);
 632         wpa_config_write_reg_dword(hk, TEXT("pmf"), config->pmf, 0);
 633
 634         wpa_config_write_reg_dword(hk, TEXT("external_sim"),
 635                                    config->external_sim, 0);
 636
 637         return 0;
 638 }
 639
 640
 641 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 642 {
 643         HKEY nhk;
 644         int i, errors = 0;
 645         LONG ret;
 646
 647         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 648         if (ret != ERROR_SUCCESS) {
 649                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 650                            "' for subkey deletion: error 0x%x (%d)", key,
 651                            (unsigned int) ret, (int) GetLastError());
 652                 return 0;
 653         }
 654
 655         for (i = 0; ; i++) {
 656                 TCHAR name[255];
 657                 DWORD namelen;
 658
 659                 namelen = 255;
 660                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 661                                    NULL);
 662
 663                 if (ret == ERROR_NO_MORE_ITEMS)
 664                         break;
 665
 666                 if (ret != ERROR_SUCCESS) {
 667                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 668                                    (unsigned int) ret, (int) GetLastError());
 669                         break;
 670                 }
 671
 672                 if (namelen >= 255)
 673                         namelen = 255 - 1;
 674                 name[namelen] = TEXT('\0');
 675
 676                 ret = RegDeleteKey(nhk, name);
 677                 if (ret != ERROR_SUCCESS) {
 678                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 679                                    (unsigned int) ret, (int) GetLastError());
 680                         errors++;
 681                 }
 682         }
 683
 684         RegCloseKey(nhk);
 685
 686         return errors ? -1 : 0;
 687 }
 688
 689
 690 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 691 {
 692         char *value = wpa_config_get(ssid, field);
 693         if (value == NULL)
 694                 return;
 695         wpa_config_write_reg_string(hk, field, value);
 696         os_free(value);
 697 }
 698
 699
 700 static void write_int(HKEY hk, const char *field, int value, int def)
 701 {
 702         char val[20];
 703         if (value == def)
 704                 return;
 705         os_snprintf(val, sizeof(val), "%d", value);
 706         wpa_config_write_reg_string(hk, field, val);
 707 }
 708
 709
 710 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 711 {
 712         char *value = wpa_config_get(ssid, "bssid");
 713         if (value == NULL)
 714                 return;
 715         wpa_config_write_reg_string(hk, "bssid", value);
 716         os_free(value);
 717 }
 718
 719
 720 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 721 {
 722         char *value = wpa_config_get(ssid, "psk");
 723         if (value == NULL)
 724                 return;
 725         wpa_config_write_reg_string(hk, "psk", value);
 726         os_free(value);
 727 }
 728
 729
 730 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 731 {
 732         char *value;
 733
 734         if (ssid->proto == DEFAULT_PROTO)
 735                 return;
 736
 737         value = wpa_config_get(ssid, "proto");
 738         if (value == NULL)
 739                 return;
 740         if (value[0])
 741                 wpa_config_write_reg_string(hk, "proto", value);
 742         os_free(value);
 743 }
 744
 745
 746 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 747 {
 748         char *value;
 749
 750         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 751                 return;
 752
 753         value = wpa_config_get(ssid, "key_mgmt");
 754         if (value == NULL)
 755                 return;
 756         if (value[0])
 757                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 758         os_free(value);
 759 }
 760
 761
 762 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 763 {
 764         char *value;
 765
 766         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 767                 return;
 768
 769         value = wpa_config_get(ssid, "pairwise");
 770         if (value == NULL)
 771                 return;
 772         if (value[0])
 773                 wpa_config_write_reg_string(hk, "pairwise", value);
 774         os_free(value);
 775 }
 776
 777
 778 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 779 {
 780         char *value;
 781
 782         if (ssid->group_cipher == DEFAULT_GROUP)
 783                 return;
 784
 785         value = wpa_config_get(ssid, "group");
 786         if (value == NULL)
 787                 return;
 788         if (value[0])
 789                 wpa_config_write_reg_string(hk, "group", value);
 790         os_free(value);
 791 }
 792
 793
 794 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 795 {
 796         char *value;
 797
 798         if (ssid->auth_alg == 0)
 799                 return;
 800
 801         value = wpa_config_get(ssid, "auth_alg");
 802         if (value == NULL)
 803                 return;
 804         if (value[0])
 805                 wpa_config_write_reg_string(hk, "auth_alg", value);
 806         os_free(value);
 807 }
 808
 809
 810 #ifdef IEEE8021X_EAPOL
 811 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 812 {
 813         char *value;
 814
 815         value = wpa_config_get(ssid, "eap");
 816         if (value == NULL)
 817                 return;
 818
 819         if (value[0])
 820                 wpa_config_write_reg_string(hk, "eap", value);
 821         os_free(value);
 822 }
 823 #endif /* IEEE8021X_EAPOL */
 824
 825
 826 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 827 {
 828         char field[20], *value;
 829
 830         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 831         value = wpa_config_get(ssid, field);
 832         if (value) {
 833                 wpa_config_write_reg_string(hk, field, value);
 834                 os_free(value);
 835         }
 836 }
 837
 838
 839 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 840 {
 841         int i, errors = 0;
 842         HKEY nhk, netw;
 843         LONG ret;
 844         TCHAR name[5];
 845
 846         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 847         if (ret != ERROR_SUCCESS) {
 848                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 849                            "for subkey addition: error 0x%x (%d)",
 850                            (unsigned int) ret, (int) GetLastError());
 851                 return 0;
 852         }
 853
 854 #ifdef UNICODE
 855         wsprintf(name, L"%04d", id);
 856 #else /* UNICODE */
 857         os_snprintf(name, sizeof(name), "%04d", id);
 858 #endif /* UNICODE */
 859         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 860                              NULL);
 861         RegCloseKey(nhk);
 862         if (ret != ERROR_SUCCESS) {
 863                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 864                            " error 0x%x (%d)",
 865                            name, (unsigned int) ret, (int) GetLastError());
 866                 return -1;
 867         }
 868
 869 #define STR(t) write_str(netw, #t, ssid)
 870 #define INT(t) write_int(netw, #t, ssid->t, 0)
 871 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 872 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 873 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 874
 875         STR(ssid);
 876         INT(scan_ssid);
 877         write_bssid(netw, ssid);
 878         write_psk(netw, ssid);
 879         STR(sae_password);
 880         STR(sae_password_id);
 881         write_proto(netw, ssid);
 882         write_key_mgmt(netw, ssid);
 883         write_pairwise(netw, ssid);
 884         write_group(netw, ssid);
 885         write_auth_alg(netw, ssid);
 886 #ifdef IEEE8021X_EAPOL
 887         write_eap(netw, ssid);
 888         STR(identity);
 889         STR(anonymous_identity);
 890         STR(imsi_identity);
 891         STR(password);
 892         STR(ca_cert);
 893         STR(ca_path);
 894         STR(client_cert);
 895         STR(private_key);
 896         STR(private_key_passwd);
 897         STR(dh_file);
 898         STR(subject_match);
 899         STR(check_cert_subject);
 900         STR(altsubject_match);
 901         STR(ca_cert2);
 902         STR(ca_path2);
 903         STR(client_cert2);
 904         STR(private_key2);
 905         STR(private_key2_passwd);
 906         STR(dh_file2);
 907         STR(subject_match2);
 908         STR(check_cert_subject2);
 909         STR(altsubject_match2);
 910         STR(phase1);
 911         STR(phase2);
 912         STR(pcsc);
 913         STR(pin);
 914         STR(engine_id);
 915         STR(key_id);
 916         STR(cert_id);
 917         STR(ca_cert_id);
 918         STR(key2_id);
 919         STR(pin2);
 920         STR(engine2_id);
 921         STR(cert2_id);
 922         STR(ca_cert2_id);
 923         INTe(engine);
 924         INTe(engine2);
 925         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 926 #endif /* IEEE8021X_EAPOL */
 927         for (i = 0; i < 4; i++)
 928                 write_wep_key(netw, i, ssid);
 929         INT(wep_tx_keyidx);
 930         INT(priority);
 931 #ifdef IEEE8021X_EAPOL
 932         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 933         STR(pac_file);
 934         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 935 #endif /* IEEE8021X_EAPOL */
 936         INT(mode);
 937         write_int(netw, "proactive_key_caching", ssid->proactive_key_caching,
 938                   -1);
 939         INT(disabled);
 940 #ifdef CONFIG_IEEE80211W
 941         write_int(netw, "ieee80211w", ssid->ieee80211w,
 942                   MGMT_FRAME_PROTECTION_DEFAULT);
 943 #endif /* CONFIG_IEEE80211W */
 944         STR(id_str);
 945 #ifdef CONFIG_HS20
 946         INT(update_identifier);
 947 #endif /* CONFIG_HS20 */
 948         INT(group_rekey);
 949         INT(ft_eap_pmksa_caching);
 950
 951 #undef STR
 952 #undef INT
 953 #undef INT_DEF
 954
 955         RegCloseKey(netw);
 956
 957         return errors ? -1 : 0;
 958 }
 959
 960
 961 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 962 {
 963         HKEY bhk;
 964         LONG ret;
 965         TCHAR *name;
 966
 967         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 968                              &bhk, NULL);
 969         if (ret != ERROR_SUCCESS) {
 970                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 971                            "error 0x%x (%d)",
 972                            (unsigned int) ret, (int) GetLastError());
 973                 return -1;
 974         }
 975
 976         name = wpa_strdup_tchar(blob->name);
 977         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 978                             blob->len);
 979         if (ret != ERROR_SUCCESS) {
 980                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 981                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 982                            (int) GetLastError());
 983                 RegCloseKey(bhk);
 984                 os_free(name);
 985                 return -1;
 986         }
 987         os_free(name);
 988
 989         RegCloseKey(bhk);
 990
 991         return 0;
 992 }
 993
 994
 995 int wpa_config_write(const char *name, struct wpa_config *config)
 996 {
 997         TCHAR buf[256];
 998         HKEY hk;
 999         LONG ret;
1000         int errors = 0;
1001         struct wpa_ssid *ssid;
1002         struct wpa_config_blob *blob;
1003         int id;
1004
1005         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
1006
1007 #ifdef UNICODE
1008         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
1009 #else /* UNICODE */
1010         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
1011 #endif /* UNICODE */
1012
1013         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
1014         if (ret != ERROR_SUCCESS) {
1015                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
1016                            "configuration registry %s: error %d", buf,
1017                            (int) GetLastError());
1018                 return -1;
1019         }
1020
1021         if (wpa_config_write_global(config, hk)) {
1022                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
1023                            "data");
1024                 errors++;
1025         }
1026
1027         wpa_config_delete_subkeys(hk, TEXT("networks"));
1028         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
1029                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1030                         continue; /* do not save temporary WPS networks */
1031                 if (wpa_config_write_network(hk, ssid, id))
1032                         errors++;
1033         }
1034
1035         RegDeleteKey(hk, TEXT("blobs"));
1036         for (blob = config->blobs; blob; blob = blob->next) {
1037                 if (wpa_config_write_blob(hk, blob))
1038                         errors++;
1039         }
1040
1041         RegCloseKey(hk);
1042
1043         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1044                    name, errors ? "un" : "");
1045         return errors ? -1 : 0;
1046 }