mirror of
https://github.com/warmcat/libwebsockets.git
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73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/*
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* Adapted from tadns 1.1, from http://adns.sourceforge.net/
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* Original license -->
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*
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* Copyright (c) 2004-2005 Sergey Lyubka <valenok@gmail.com>
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*
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* "THE BEER-WARE LICENSE" (Revision 42):
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* Sergey Lyubka wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return.
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*
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* Integrated into lws, largely rewritten and relicensed (as allowed above)
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*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "private-lib-core.h"
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lws_async_dns_server_check_t
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lws_plat_asyncdns_init(struct lws_context *context, lws_sockaddr46 *sa46)
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{
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char subkey[512], value[128], *key =
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"SYSTEM\\ControlSet001\\Services\\Tcpip\\Parameters\\Interfaces";
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HKEY hKey, hSub;
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LONG err;
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int i, n;
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if ((err = RegOpenKey(HKEY_LOCAL_MACHINE, key, &hKey)) != ERROR_SUCCESS) {
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lwsl_err("%s: cannot open reg key %s: %d\n", __func__, key, err);
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return 1;
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}
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for (i = 0; RegEnumKey(hKey, i, subkey, sizeof(subkey)) == ERROR_SUCCESS; i++) {
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DWORD type, len = sizeof(value);
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if (RegOpenKey(hKey, subkey, &hSub) == ERROR_SUCCESS &&
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(RegQueryValueEx(hSub, "NameServer", 0,
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&type, value, &len) == ERROR_SUCCESS ||
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RegQueryValueEx(hSub, "DhcpNameServer", 0,
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&type, value, &len) == ERROR_SUCCESS)) {
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n = lws_sa46_parse_numeric_address(value, sa46);
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RegCloseKey(hSub);
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RegCloseKey(hKey);
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return n == 0 ? LADNS_CONF_SERVER_CHANGED :
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LADNS_CONF_SERVER_UNKNOWN;
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}
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}
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RegCloseKey(hKey);
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return LADNS_CONF_SERVER_UNKNOWN;
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}
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