/**
* Implements the CFML Function hash
*/
package railo.runtime.functions.string;
import java.security.MessageDigest;
import railo.commons.digest.HashUtil;
import railo.commons.lang.StringUtil;
import railo.commons.lang.SystemOut;
import railo.runtime.PageContext;
import railo.runtime.config.Config;
import railo.runtime.exp.PageException;
import railo.runtime.ext.function.Function;
import railo.runtime.op.Caster;
public final class Hash implements Function {
// function for old code in ra files calling this function
public static String call(PageContext pc, String input) throws PageException {
return invoke( pc.getConfig(), input, null, null, 1 );
}
public static String call(PageContext pc , String input, String algorithm) throws PageException {
return invoke( pc.getConfig(), input, algorithm, null, 1 );
}
public static String call(PageContext pc , String input, String algorithm, String encoding) throws PageException {
return invoke( pc.getConfig(), input, algorithm, encoding, 1 );
}
//////
public static String call(PageContext pc, Object input) throws PageException {
return invoke( pc.getConfig(), input, null, null, 1 );
}
public static String call(PageContext pc , Object input, String algorithm) throws PageException {
return invoke( pc.getConfig(), input, algorithm, null, 1 );
}
public static String call(PageContext pc , Object input, String algorithm, String encoding) throws PageException {
return invoke( pc.getConfig(), input, algorithm, encoding, 1 );
}
public static String call(PageContext pc , Object input, String algorithm, String encoding, double numIterations) throws PageException {
return invoke( pc.getConfig(), input, algorithm, encoding, (int)numIterations );
}
/*/ this method signature was called from ConfigWebAdmin.createUUID(), comment this comment to enable
public synchronized static String invoke(Config config, Object input, String algorithm, String encoding) throws PageException {
return invoke(config, input, algorithm, encoding, 1);
} //*/
public static String invoke(Config config, Object input, String algorithm, String encoding, int numIterations) throws PageException {
if(StringUtil.isEmpty(algorithm))algorithm="md5";
else algorithm=algorithm.trim().toLowerCase();
if("cfmx_compat".equals(algorithm)) algorithm="md5";
else if("quick".equals(algorithm)) {
if(numIterations>1)
SystemOut.printDate("for algorithm [quick], argument numIterations makes no sense, because this algorithm has no security in mind");
return HashUtil.create64BitHashAsString(Caster.toString(input), 16);
}
if(StringUtil.isEmpty(encoding))encoding=config.getWebCharset();
byte[] data = null;
try {
if(input instanceof byte[]) data = (byte[])input;
else data = Caster.toString(input).getBytes( encoding );
MessageDigest md=MessageDigest.getInstance(algorithm);
md.reset();
for(int i=0; i<numIterations; i++) {
data=md.digest(data);
}
return railo.commons.digest.Hash.toHexString(data,true);
}
catch (Throwable t) {
throw Caster.toPageException(t);
}
}
}