/**
*
* Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
**/
/**
* Implements the CFML Function decrypt
*/
package lucee.runtime.functions.other;
import lucee.commons.lang.ExceptionUtil;
import lucee.runtime.PageContext;
import lucee.runtime.coder.Coder;
import lucee.runtime.crypt.CFMXCompat;
import lucee.runtime.crypt.Cryptor;
import lucee.runtime.exp.PageException;
import lucee.runtime.ext.function.Function;
import lucee.runtime.op.Caster;
public final class Decrypt implements Function {
public synchronized static String call( PageContext pc, String input, String key ) throws PageException {
return invoke(input, key, CFMXCompat.ALGORITHM_NAME, Cryptor.DEFAULT_ENCODING, null, 0);
}
public synchronized static String call( PageContext pc, String input, String key, String algorithm ) throws PageException {
return invoke(input, key, algorithm, Cryptor.DEFAULT_ENCODING, null, 0);
}
public synchronized static String call( PageContext pc, String input, String key, String algorithm, String encoding ) throws PageException {
return invoke( input, key, algorithm, encoding, null, 0 );
}
public synchronized static String call( PageContext pc, String input, String key, String algorithm, String encoding, Object ivOrSalt ) throws PageException {
return invoke(input, key, algorithm, encoding, ivOrSalt, 0);
}
/**
* call with all optional args
*/
public synchronized static String call( PageContext pc, String input, String key, String algorithm, String encoding, Object ivOrSalt, double iterations ) throws PageException {
return invoke( input, key, algorithm, encoding, ivOrSalt, Caster.toInteger( iterations ) );
}
public synchronized static String invoke( String input, String key, String algorithm, String encoding, Object ivOrSalt, int iterations ) throws PageException {
try {
if ( CFMXCompat.isCfmxCompat( algorithm ) )
return new String( invoke( Coder.decode( encoding, input ), key, algorithm, null, 0 ), Cryptor.DEFAULT_CHARSET );
byte[] baIVS = null;
if ( ivOrSalt instanceof String )
baIVS = ((String)ivOrSalt).getBytes( Cryptor.DEFAULT_CHARSET );
else if ( ivOrSalt != null )
baIVS = Caster.toBinary( ivOrSalt );
return Cryptor.decrypt( input, key, algorithm, baIVS, iterations, encoding, Cryptor.DEFAULT_CHARSET );
}
catch(Throwable t) {
ExceptionUtil.rethrowIfNecessary(t);
throw Caster.toPageException( t );
}
}
public synchronized static byte[] invoke( byte[] input, String key, String algorithm, byte[] ivOrSalt, int iterations ) throws PageException {
if ( CFMXCompat.isCfmxCompat( algorithm ) )
return new CFMXCompat().transformString( key, input );
return Cryptor.decrypt( input, key, algorithm, ivOrSalt, iterations );
}
}