mirror of
https://libwebsockets.org/repo/libwebsockets
synced 2024-11-24 17:46:45 +00:00
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/*
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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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#include "private-lib-async-dns.h"
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#include <iphlpapi.h>
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lws_async_dns_server_check_t
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lws_plat_asyncdns_init(struct lws_context *context, lws_async_dns_t *dns)
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{
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lws_async_dns_server_check_t s = LADNS_CONF_SERVER_SAME;
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lws_async_dns_server_t *dsrv;
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lws_sockaddr46 sa46t;
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unsigned long ul;
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FIXED_INFO *fi;
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int n = 0;
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DWORD dw;
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ul = sizeof(fi);
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do {
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fi = (FIXED_INFO *)lws_malloc(ul, __func__);
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if (!fi)
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goto oom;
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dw = GetNetworkParams(fi, &ul);
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if (dw == NO_ERROR)
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break;
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if (dw != ERROR_BUFFER_OVERFLOW) {
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lwsl_err("%s: GetNetworkParams says 0x%x\n", __func__,
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(unsigned int)dw);
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return LADNS_CONF_SERVER_UNKNOWN;
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}
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lws_free(fi);
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if (n++)
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/* not twice or more */
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goto oom;
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} while (1);
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/* if we got here, then we have it */
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lwsl_info("%s: trying %s\n", __func__,
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fi->DnsServerList.IpAddress.String);
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n = lws_sa46_parse_numeric_address(
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fi->DnsServerList.IpAddress.String, &sa46t);
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lws_free(fi);
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if (!n) {
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dsrv = __lws_async_dns_server_find(dns, &sa46t);
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if (!dsrv) {
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__lws_async_dns_server_add(dns, &sa46t);
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s = LADNS_CONF_SERVER_CHANGED;
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}
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}
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return s;
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oom:
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lwsl_err("%s: OOM\n", __func__);
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return LADNS_CONF_SERVER_UNKNOWN;
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}
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int
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lws_plat_ntpclient_config(struct lws_context *context)
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{
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#if defined(LWS_HAVE_GETENV)
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char *ntpsrv = getenv("LWS_NTP_SERVER");
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if (ntpsrv && strlen(ntpsrv) < 64) {
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lws_system_blob_heap_append(lws_system_get_blob(context,
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LWS_SYSBLOB_TYPE_NTP_SERVER, 0),
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(const uint8_t *)ntpsrv,
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strlen(ntpsrv));
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return 1;
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}
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#endif
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return 0;
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}
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