//
// Copyright (C) 2007 United States Government as represented by the
// Administrator of the National Aeronautics and Space Administration
// (NASA). All Rights Reserved.
//
// This software is distributed under the NASA Open Source Agreement
// (NOSA), version 1.3. The NOSA has been approved by the Open Source
// Initiative. See the file NOSA-1.3-JPF at the top of the distribution
// directory tree for the complete NOSA document.
//
// THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
// KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
// LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
// SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
// A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
// THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
// DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
//
package gov.nasa.jpf.vm;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import de.fosd.typechef.featureexpr.FeatureExpr;
import gov.nasa.jpf.Config;
import gov.nasa.jpf.annotation.MJI;
@SuppressWarnings("deprecation")
public class JPF_java_security_MessageDigest extends NativePeer {
MessageDigest[] digests;
public JPF_java_security_MessageDigest (Config conf){
digests = new MessageDigest[32];
}
int getNewIndex() {
int n = digests.length;
for (int i=0; i<n; i++){
if (digests[i] == null){
return i;
}
}
MessageDigest[] newd = new MessageDigest[n + 32];
System.arraycopy(digests,0,newd,0,digests.length);
digests = newd;
return n;
}
MessageDigest getDigest (FeatureExpr ctx, MJIEnv env, int objRef){
int id = env.getIntField(objRef, "id").simplify(ctx).getValue().intValue();
return digests[id];
}
@MJI
public int init0__Ljava_lang_String_2__I (MJIEnv env, int objRef, int algRef, FeatureExpr ctx) {
String algorithm = env.getStringObject(ctx, algRef);
try {
MessageDigest md = MessageDigest.getInstance(algorithm);
int id = getNewIndex();
digests[id] = md;
return id;
} catch (NoSuchAlgorithmException x){
env.throwException(ctx, "java.security.NoSuchAlgorithmException", algorithm);
return -1;
}
}
@MJI
public int digest___3B___3B (MJIEnv env, int objRef, int inputRef, FeatureExpr ctx){
MessageDigest md = getDigest(ctx, env, objRef);
byte[] input = env.getByteArrayObjectDeprecated(ctx, inputRef);
byte[] res = md.digest(input);
return env.newByteArray(ctx, res);
}
@MJI
public int digest_____3B (MJIEnv env, int objRef, FeatureExpr ctx){
MessageDigest md = getDigest(ctx, env, objRef);
byte[] res = md.digest();
return env.newByteArray(ctx, res);
}
@MJI
public void finalize____ (MJIEnv env, int objRef){
int id = env.getIntField(objRef, "id").getValue().intValue();
digests[id] = null;
}
@MJI
public void update___3B__V (MJIEnv env, int objRef, int inputRef, FeatureExpr ctx){
MessageDigest md = getDigest(ctx, env, objRef);
byte[] input = env.getByteArrayObjectDeprecated(ctx, inputRef);
md.update(input);
}
}