/*
* Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj.protocol;
import java.net.
InetAddress;
import java.net.
InetSocketAddress;
import java.net.
SocketAddress;
import java.net.
UnknownHostException;
import com.mysql.cj.
Messages;
import com.mysql.cj.
Session;
public interface
SocketMetadata {
default boolean
isLocallyConnected(
Session sess) {
String processHost =
sess.
getProcessHost();
return
isLocallyConnected(
sess,
processHost);
}
default boolean
isLocallyConnected(
Session sess,
String processHost) {
if (
processHost != null) {
sess.
getLog().
logDebug(
Messages.
getString("SocketMetadata.0", new
Object[] {
processHost }));
int
endIndex =
processHost.
lastIndexOf(":");
if (
endIndex != -1) {
processHost =
processHost.
substring(0,
endIndex);
}
try {
InetAddress[]
whereMysqlThinksIConnectedFrom =
InetAddress.
getAllByName(
processHost);
SocketAddress remoteSocketAddr =
sess.
getRemoteSocketAddress();
if (
remoteSocketAddr instanceof
InetSocketAddress) {
InetAddress whereIConnectedTo = ((
InetSocketAddress)
remoteSocketAddr).
getAddress();
for (
InetAddress hostAddr :
whereMysqlThinksIConnectedFrom) {
if (
hostAddr.
equals(
whereIConnectedTo)) {
sess.
getLog().
logDebug(
Messages.
getString("SocketMetadata.1", new
Object[] {
hostAddr,
whereIConnectedTo }));
return true;
}
sess.
getLog().
logDebug(
Messages.
getString("SocketMetadata.2", new
Object[] {
hostAddr,
whereIConnectedTo }));
}
} else {
sess.
getLog().
logDebug(
Messages.
getString("SocketMetadata.3", new
Object[] {
remoteSocketAddr }));
}
return false;
} catch (
UnknownHostException e) {
sess.
getLog().
logWarn(
Messages.
getString("Connection.CantDetectLocalConnect", new
Object[] {
processHost }),
e);
return false;
}
}
return false;
}
}