88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
/*
|
|
* nghttp2 - HTTP/2 C Library
|
|
*
|
|
* Copyright (c) 2016 Tatsuhiro Tsujikawa
|
|
*
|
|
* 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 "shrpx_dual_dns_resolver.h"
|
|
|
|
namespace shrpx {
|
|
|
|
DualDNSResolver::DualDNSResolver(struct ev_loop *loop)
|
|
: resolv4_(loop), resolv6_(loop) {
|
|
auto cb = [this](int, const Address *) {
|
|
int rv;
|
|
Address result;
|
|
|
|
rv = this->get_status(&result);
|
|
switch (rv) {
|
|
case DNS_STATUS_ERROR:
|
|
case DNS_STATUS_OK:
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
auto cb = this->get_complete_cb();
|
|
cb(rv, &result);
|
|
};
|
|
|
|
resolv4_.set_complete_cb(cb);
|
|
resolv6_.set_complete_cb(cb);
|
|
}
|
|
|
|
int DualDNSResolver::resolve(const StringRef &host) {
|
|
int rv4, rv6;
|
|
rv4 = resolv4_.resolve(host, AF_INET);
|
|
rv6 = resolv6_.resolve(host, AF_INET6);
|
|
|
|
if (rv4 != 0 && rv6 != 0) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
CompleteCb DualDNSResolver::get_complete_cb() const { return complete_cb_; }
|
|
|
|
void DualDNSResolver::set_complete_cb(CompleteCb cb) { complete_cb_ = cb; }
|
|
|
|
int DualDNSResolver::get_status(Address *result) const {
|
|
int rv4, rv6;
|
|
rv6 = resolv6_.get_status(result);
|
|
if (rv6 == DNS_STATUS_OK) {
|
|
return DNS_STATUS_OK;
|
|
}
|
|
rv4 = resolv4_.get_status(result);
|
|
if (rv4 == DNS_STATUS_OK) {
|
|
return DNS_STATUS_OK;
|
|
}
|
|
if (rv4 == DNS_STATUS_RUNNING || rv6 == DNS_STATUS_RUNNING) {
|
|
return DNS_STATUS_RUNNING;
|
|
}
|
|
if (rv4 == DNS_STATUS_ERROR || rv6 == DNS_STATUS_ERROR) {
|
|
return DNS_STATUS_ERROR;
|
|
}
|
|
return DNS_STATUS_IDLE;
|
|
}
|
|
|
|
} // namespace shrpx
|