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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "private-lib-core.h"
#include <iphlpapi.h>
lws_async_dns_server_check_t
lws_plat_asyncdns_init(struct lws_context *context, lws_sockaddr46 *sa46)
{
unsigned long ul;
FIXED_INFO *fi;
int n = 0;
DWORD dw;
ul = sizeof(fi);
do {
fi = (FIXED_INFO *)lws_malloc(ul, __func__);
if (!fi)
goto oom;
dw = GetNetworkParams(fi, &ul);
if (dw == NO_ERROR)
break;
if (dw != ERROR_BUFFER_OVERFLOW) {
lwsl_err("%s: GetNetworkParams says 0x%x\n", __func__,
(unsigned int)dw);
return LADNS_CONF_SERVER_UNKNOWN;
}
lws_free(fi);
if (n++)
/* not twice or more */
goto oom;
} while (1);
/* if we got here, then we have it */
lwsl_info("%s: trying %s\n", __func__,
fi->DnsServerList.IpAddress.String);
n = lws_sa46_parse_numeric_address(
fi->DnsServerList.IpAddress.String, sa46);
lws_free(fi);
return n == 0 ? LADNS_CONF_SERVER_CHANGED :
LADNS_CONF_SERVER_UNKNOWN;
oom:
lwsl_err("%s: OOM\n", __func__);
return LADNS_CONF_SERVER_UNKNOWN;
}
int
lws_plat_ntpclient_config(struct lws_context *context)
{
#if defined(LWS_HAVE_GETENV)
char *ntpsrv = getenv("LWS_NTP_SERVER");
if (ntpsrv && strlen(ntpsrv) < 64) {
lws_system_blob_heap_append(lws_system_get_blob(context,
LWS_SYSBLOB_TYPE_NTP_SERVER, 0),
(const uint8_t *)ntpsrv,
strlen(ntpsrv));
return 1;
}
#endif
return 0;
}
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