mirror of
https://libwebsockets.org/repo/libwebsockets
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60 lines
2.0 KiB
C
60 lines
2.0 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 - 2021 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 <sys/system_properties.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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char prop[PROP_VALUE_MAX], netdns[9];
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lws_async_dns_server_t *dsrv;
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lws_sockaddr46 sa46t;
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int n;
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strcpy(netdns, "net.dns1");
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for (n = 0; n < 4; n++) {
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prop[0] = '\0';
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if (__system_property_get(netdns, prop) <= 0)
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continue;
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netdns[7]++; /* net.dns2... etc */
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memset(&sa46t, 0, sizeof(sa46t));
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if (lws_sa46_parse_numeric_address(prop, &sa46t) < 0)
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continue;
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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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}
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