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GUACAMOLE-524: Add convenience classes for injecting custom parameter tokens through decoration.

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This commit is contained in:
Michael Jumper
2018-10-04 21:17:22 -07:00
parent 7a3f51be71
commit 0d7cff5f2d
3 changed files with 282 additions and 0 deletions
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69
guacamole-ext/src/main/java/org/apache/guacamole/net/auth/TokenInjectingConnection.java Normal file
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.guacamole.net.auth;
import java.util.HashMap;
import java.util.Map;
import org.apache.guacamole.GuacamoleException;
import org.apache.guacamole.net.GuacamoleTunnel;
import org.apache.guacamole.protocol.GuacamoleClientInformation;
/**
* Connection implementation which overrides the connect() function of an
* underlying Connection, adding a given set of parameter tokens to the tokens
* already supplied.
*/
public class TokenInjectingConnection extends DelegatingConnection {
/**
* The additional tokens to include with each call to connect().
*/
private final Map<String, String> tokens;
/**
* Wraps the given Connection, automatically adding the given tokens to
* each invocation of connect(). Any additional tokens which have the same
* name as existing tokens will override the existing values.
*
* @param connection
* The Connection to wrap.
*
* @param tokens
* The additional tokens to include with each call to connect().
*/
public TokenInjectingConnection(Connection connection,
Map<String, String> tokens) {
super(connection);
this.tokens = tokens;
}
@Override
public GuacamoleTunnel connect(GuacamoleClientInformation info,
Map<String, String> tokens) throws GuacamoleException {
// Apply provided tokens over those given to connect()
tokens = new HashMap<>(tokens);
tokens.putAll(this.tokens);
return super.connect(info, tokens);
}
}

69
guacamole-ext/src/main/java/org/apache/guacamole/net/auth/TokenInjectingConnectionGroup.java Normal file
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.guacamole.net.auth;
import java.util.HashMap;
import java.util.Map;
import org.apache.guacamole.GuacamoleException;
import org.apache.guacamole.net.GuacamoleTunnel;
import org.apache.guacamole.protocol.GuacamoleClientInformation;
/**
* ConnectionGroup implementation which overrides the connect() function of an
* underlying ConnectionGroup, adding a given set of parameter tokens to the
* tokens already supplied.
*/
public class TokenInjectingConnectionGroup extends DelegatingConnectionGroup {
/**
* The additional tokens to include with each call to connect().
*/
private final Map<String, String> tokens;
/**
* Wraps the given ConnectionGroup, automatically adding the given tokens
* to each invocation of connect(). Any additional tokens which have the
* same name as existing tokens will override the existing values.
*
* @param connectionGroup
* The ConnectionGroup to wrap.
*
* @param tokens
* The additional tokens to include with each call to connect().
*/
public TokenInjectingConnectionGroup(ConnectionGroup connectionGroup,
Map<String, String> tokens) {
super(connectionGroup);
this.tokens = tokens;
}
@Override
public GuacamoleTunnel connect(GuacamoleClientInformation info,
Map<String, String> tokens) throws GuacamoleException {
// Apply provided tokens over those given to connect()
tokens = new HashMap<>(tokens);
tokens.putAll(this.tokens);
return super.connect(info, tokens);
}
}

144
guacamole-ext/src/main/java/org/apache/guacamole/net/auth/TokenInjectingUserContext.java Normal file
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.guacamole.net.auth;
import java.util.Collections;
import java.util.Map;
import org.apache.guacamole.GuacamoleException;
/**
* UserContext implementation which decorates a given UserContext,
* automatically applying additional parameter tokens during the connection
* process of any retrieved Connections and ConnectionGroups.
*/
public class TokenInjectingUserContext extends DelegatingUserContext {
/**
* The additional tokens to include with each call to connect() if
* getTokens() is not overridden.
*/
private final Map<String, String> tokens;
/**
* Wraps the given UserContext, overriding the connect() function of each
* retrieved Connection and ConnectionGroup such that the given additional
* parameter tokens are included. Any additional tokens which have the same
* name as existing tokens will override the existing values. If tokens
* specific to a particular connection or connection group need to be
* included, getTokens() may be overridden to provide a different set of
* tokens.
*
* @param userContext
* The UserContext to wrap.
*
* @param tokens
* The additional tokens to include with each call to connect().
*/
public TokenInjectingUserContext(UserContext userContext,
Map<String, String> tokens) {
super(userContext);
this.tokens = tokens;
}
/**
* Wraps the given UserContext, overriding the connect() function of each
* retrieved Connection and ConnectionGroup such that the additional
* parameter tokens returned by getTokens() are included. Any additional
* tokens which have the same name as existing tokens will override the
* existing values.
*
* @param userContext
* The UserContext to wrap.
*/
public TokenInjectingUserContext(UserContext userContext) {
this(userContext, Collections.<String, String>emptyMap());
}
/**
* Returns the tokens which should be added to an in-progress call to
* connect() for the given Connection. If not overridden, this function
* will return the tokens provided when this instance of
* TokenInjectingUserContext was created.
*
* @param connection
* The Connection on which connect() has been called.
*
* @return
* The tokens which should be added to the in-progress call to
* connect().
*/
protected Map<String, String> getTokens(Connection connection) {
return tokens;
}
/**
* Returns the tokens which should be added to an in-progress call to
* connect() for the given ConnectionGroup. If not overridden, this
* function will return the tokens provided when this instance of
* TokenInjectingUserContext was created.
*
* @param connectionGroup
* The ConnectionGroup on which connect() has been called.
*
* @return
* The tokens which should be added to the in-progress call to
* connect().
*/
protected Map<String, String> getTokens(ConnectionGroup connectionGroup) {
return tokens;
}
@Override
public Directory<ConnectionGroup> getConnectionGroupDirectory()
throws GuacamoleException {
return new DecoratingDirectory<ConnectionGroup>(super.getConnectionGroupDirectory()) {
@Override
protected ConnectionGroup decorate(ConnectionGroup object) throws GuacamoleException {
return new TokenInjectingConnectionGroup(object, getTokens(object));
}
@Override
protected ConnectionGroup undecorate(ConnectionGroup object) throws GuacamoleException {
return ((TokenInjectingConnectionGroup) object).getDelegateConnectionGroup();
}
};
}
@Override
public Directory<Connection> getConnectionDirectory()
throws GuacamoleException {
return new DecoratingDirectory<Connection>(super.getConnectionDirectory()) {
@Override
protected Connection decorate(Connection object) throws GuacamoleException {
return new TokenInjectingConnection(object, getTokens(object));
}
@Override
protected Connection undecorate(Connection object) throws GuacamoleException {
return ((TokenInjectingConnection) object).getDelegateConnection();
}
};
}
}