You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
3.5 KiB
109 lines
3.5 KiB
/**
|
|
* Copyright (c) 2019, The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "DnsResolver.h"
|
|
|
|
#include <android-base/logging.h>
|
|
|
|
#include "DnsProxyListener.h"
|
|
#include "DnsResolverService.h"
|
|
#include "DnsTlsDispatcher.h"
|
|
#include "PrivateDnsConfiguration.h"
|
|
#include "netd_resolv/resolv.h"
|
|
#include "res_debug.h"
|
|
#include "util.h"
|
|
|
|
bool resolv_init(const ResolverNetdCallbacks* callbacks) {
|
|
android::base::InitLogging(/*argv=*/nullptr);
|
|
android::base::SetDefaultTag("libnetd_resolv");
|
|
LOG(INFO) << __func__ << ": Initializing resolver";
|
|
// TODO(b/170539625): restore log level to WARNING after clarifying flaky tests.
|
|
resolv_set_log_severity(isUserDebugBuild() ? android::base::DEBUG : android::base::WARNING);
|
|
using android::net::gApiLevel;
|
|
gApiLevel = getApiLevel();
|
|
using android::net::gResNetdCallbacks;
|
|
gResNetdCallbacks.check_calling_permission = callbacks->check_calling_permission;
|
|
gResNetdCallbacks.get_network_context = callbacks->get_network_context;
|
|
gResNetdCallbacks.log = callbacks->log;
|
|
if (gApiLevel >= 30) {
|
|
gResNetdCallbacks.tagSocket = callbacks->tagSocket;
|
|
gResNetdCallbacks.evaluate_domain_name = callbacks->evaluate_domain_name;
|
|
}
|
|
android::net::gDnsResolv = android::net::DnsResolver::getInstance();
|
|
return android::net::gDnsResolv->start();
|
|
}
|
|
|
|
namespace android {
|
|
namespace net {
|
|
|
|
namespace {
|
|
|
|
bool verifyCallbacks() {
|
|
if (!(gResNetdCallbacks.check_calling_permission && gResNetdCallbacks.get_network_context &&
|
|
gResNetdCallbacks.log)) {
|
|
return false;
|
|
}
|
|
if (gApiLevel >= 30) {
|
|
return gResNetdCallbacks.tagSocket != nullptr;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
DnsResolver* gDnsResolv = nullptr;
|
|
ResolverNetdCallbacks gResNetdCallbacks;
|
|
netdutils::Log gDnsResolverLog("dnsResolver");
|
|
uint64_t gApiLevel = 0;
|
|
|
|
DnsResolver* DnsResolver::getInstance() {
|
|
// Instantiated on first use.
|
|
static DnsResolver instance;
|
|
return &instance;
|
|
}
|
|
|
|
DnsResolver::DnsResolver() {
|
|
// TODO: make them member variables after fixing the circular dependency:
|
|
// DnsTlsDispatcher.h -> resolv_private.h -> DnsResolver.h -> DnsTlsDispatcher.h
|
|
auto& dnsTlsDispatcher = DnsTlsDispatcher::getInstance();
|
|
auto& privateDnsConfiguration = PrivateDnsConfiguration::getInstance();
|
|
privateDnsConfiguration.setObserver(&dnsTlsDispatcher);
|
|
}
|
|
|
|
bool DnsResolver::start() {
|
|
if (!verifyCallbacks()) {
|
|
LOG(ERROR) << __func__ << ": Callback verification failed";
|
|
return false;
|
|
}
|
|
if (mDnsProxyListener.startListener()) {
|
|
PLOG(ERROR) << __func__ << ": Unable to start DnsProxyListener";
|
|
return false;
|
|
}
|
|
binder_status_t ret;
|
|
if ((ret = DnsResolverService::start()) != STATUS_OK) {
|
|
LOG(ERROR) << __func__ << ": Unable to start DnsResolverService: " << ret;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
int DnsResolver::setLogSeverity(int32_t logSeverity) {
|
|
return resolv_set_log_severity(logSeverity);
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace android
|