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// Copyright (C) 2010 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.
package com.google.gerrit.sshd;
import com.google.gerrit.server.AccessPath;
import com.google.gerrit.server.CurrentUser;
import org.apache.sshd.common.Session.AttributeKey;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
/** Global data related to an active SSH connection. */
public class SshSession {
/** ServerSession attribute key for this object instance. */
public static final AttributeKey<SshSession> KEY =
new AttributeKey<SshSession>();
private final int sessionId;
private final SocketAddress remoteAddress;
private final String remoteAsString;
private volatile CurrentUser identity;
private volatile String username;
private volatile String authError;
SshSession(final int sessionId, SocketAddress peer) {
this.sessionId = sessionId;
this.remoteAddress = peer;
this.remoteAsString = format(remoteAddress);
}
SshSession(SshSession parent, SocketAddress peer, CurrentUser user) {
user.setAccessPath(AccessPath.SSH_COMMAND);
this.sessionId = parent.sessionId;
this.remoteAddress = peer;
if (parent.remoteAddress == peer) {
this.remoteAsString = parent.remoteAsString;
} else {
this.remoteAsString = format(peer) + "/" + parent.remoteAsString;
}
this.identity = user;
}
/** Unique session number, assigned during connect. */
public int getSessionId() {
return sessionId;
}
/** Identity of the authenticated user account on the socket. */
public CurrentUser getCurrentUser() {
return identity;
}
String getUsername() {
return username;
}
String getAuthenticationError() {
return authError;
}
void authenticationSuccess(String user, CurrentUser id) {
username = user;
identity = id;
authError = null;
}
void authenticationError(String user, String error) {
username = user;
identity = null;
authError = error;
}
void setAccessPath(AccessPath path) {
identity.setAccessPath(path);
}
/** @return {@code true} if the authentication did not succeed. */
boolean isAuthenticationError() {
return authError != null;
}
SocketAddress getRemoteAddress() {
return remoteAddress;
}
String getRemoteAddressAsString() {
return remoteAsString;
}
private static String format(final SocketAddress remote) {
if (remote instanceof InetSocketAddress) {
final InetSocketAddress sa = (InetSocketAddress) remote;
final InetAddress in = sa.getAddress();
if (in != null) {
return in.getHostAddress();
}
final String hostName = sa.getHostName();
if (hostName != null) {
return hostName;
}
}
return remote.toString();
}
}
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