/*
* Copyright 2011 Cloud.com, Inc.
*
* 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.cloud.bridge.service.core.s3;
import java.text.ParseException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.apache.log4j.Logger;
import com.cloud.bridge.service.core.s3.S3ConditionFactory.PolicyConditions;
import com.cloud.bridge.service.exception.PermissionDeniedException;
public class S3PolicyBoolCondition extends S3PolicyCondition {
protected final static Logger logger = Logger.getLogger(S3PolicyBoolCondition.class);
private Map<ConditionKeys,String[]> keys = new HashMap<ConditionKeys,String[]>();
public S3PolicyBoolCondition() {
}
/**
* Return a set holding all the condition keys kept in this object.
* @return Set<String>
*/
public Set<ConditionKeys> getAllKeys() {
return keys.keySet();
}
/**
* After calling getAllKeys(), pass in each key from that result to get
* the key's associated list of values.
* @param key
* @return String[]
*/
public String[] getKeyValues(ConditionKeys key) {
return keys.get(key);
}
/**
* Documentation on Bool conditions is nearly non-existent. Only found that
* the 'SecureTransport' key is relvant and have not found any examples.
*
* @throws ParseException
*/
public void setKey(ConditionKeys key, String[] values) throws ParseException {
keys.put(key, values);
}
public boolean isTrue(S3PolicyContext context, String SID)
{
// -> improperly defined condition evaluates to false
Set<ConditionKeys> keySet = getAllKeys();
if (null == keySet) return false;
Iterator<ConditionKeys> itr = keySet.iterator();
if (!itr.hasNext()) return false;
// -> all keys in a condition are ANDed together (one false one terminates the entire condition)
while( itr.hasNext())
{
ConditionKeys keyName = itr.next();
// String[] valueList = getKeyValues( keyName ); // <-- not used
boolean keyResult = false;
if (ConditionKeys.SecureTransport == keyName && PolicyConditions.Bool == condition)
{
if (context.getIsHTTPSecure()) keyResult = true;
logger.info( "S3PolicyBoolCondition eval - SID: " + SID + ", " + condition + ", key: " + keyName + ", result: " + keyResult );
}
// -> if all key values are false, false then that key is false and then the entire condition is then false
if (!keyResult) return false;
}
return true;
}
public void verify() throws PermissionDeniedException
{
if (0 == keys.size())
throw new PermissionDeniedException( "S3 Bucket Policy Bool Condition needs at least one key-value pairs" );
}
public String toString()
{
StringBuffer value = new StringBuffer();
Set<ConditionKeys> keySet = getAllKeys();
if (null == keySet) return "";
Iterator<ConditionKeys> itr = keySet.iterator();
value.append( condition + " (a BOOL condition): \n" );
while( itr.hasNext()) {
ConditionKeys keyName = itr.next();
value.append( keyName );
value.append( ": \n" );
String[] valueList = getKeyValues( keyName );
for( int i=0; i < valueList.length; i++ ) {
if (0 < i) value.append( "\n" );
value.append( valueList[i]);
}
value.append( "\n\n" );
}
return value.toString();
}
}