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windows-resolv: fix dns resolution

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before this patch all i got was 'cant get dns servers' on my laptop running windows 10 1909
This commit is contained in:
Curi0 2021-03-05 20:15:28 +05:30 • committed by Andy Green
parent 6d0f2500b0
commit 8dbe8507a3
1 changed files with 35 additions and 8 deletions
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43
lib/plat/windows/windows-resolv.c
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@ -29,23 +29,50 @@ 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;
FIXED_INFO *fi;
int n = 0;
DWORD dw;
ul = sizeof(fi);
if (GetNetworkParams(&fi, &ul) != NO_ERROR) {
lwsl_err("%s: can't get dns servers\n", __func__);
return LADNS_CONF_SERVER_UNKNOWN;
}
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);
fi->DnsServerList.IpAddress.String);
n = lws_sa46_parse_numeric_address(
fi.DnsServerList.IpAddress.String, sa46);
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