Home | History | Annotate | Download | only in jsse 
      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package org.apache.harmony.xnet.provider.jsse;
     18 
     19 import java.security.InvalidKeyException;
     20 import java.security.PrivateKey;
     21 
     22 public class OpenSSLEngine {
     23     static {
     24         NativeCrypto.ENGINE_load_dynamic();
     25     }
     26 
     27     /** The ENGINE's native handle. */
     28     private final int ctx;
     29 
     30     public static OpenSSLEngine getInstance(String engine) throws IllegalArgumentException {
     31         if (engine == null) {
     32             throw new NullPointerException("engine == null");
     33         }
     34 
     35         final int engineCtx = NativeCrypto.ENGINE_by_id(engine);
     36 
     37         if (engineCtx == 0) {
     38             throw new IllegalArgumentException("Unknown ENGINE id: " + engine);
     39         }
     40 
     41         return new OpenSSLEngine(engineCtx);
     42     }
     43 
     44     private OpenSSLEngine(int engineCtx) {
     45         ctx = engineCtx;
     46 
     47         if (NativeCrypto.ENGINE_init(engineCtx) == 0) {
     48             throw new IllegalArgumentException("Could not initialize engine");
     49         }
     50     }
     51 
     52     public PrivateKey getPrivateKeyById(String id) throws InvalidKeyException {
     53         if (id == null) {
     54             throw new NullPointerException("id == null");
     55         }
     56 
     57         final int keyRef = NativeCrypto.ENGINE_load_private_key(ctx, id);
     58         if (keyRef == 0) {
     59             return null;
     60         }
     61 
     62         final int keyType = NativeCrypto.EVP_PKEY_type(keyRef);
     63         switch (keyType) {
     64             case NativeCrypto.EVP_PKEY_RSA:
     65                 return OpenSSLRSAPrivateKey.getInstance(new OpenSSLKey(keyRef, this));
     66             case NativeCrypto.EVP_PKEY_DSA:
     67                 return new OpenSSLDSAPrivateKey(new OpenSSLKey(keyRef, this));
     68             default:
     69                 throw new InvalidKeyException("Unknown key type: " + keyType);
     70         }
     71     }
     72 
     73     int getEngineContext() {
     74         return ctx;
     75     }
     76 
     77     @Override
     78     protected void finalize() throws Throwable {
     79         try {
     80             NativeCrypto.ENGINE_finish(ctx);
     81             NativeCrypto.ENGINE_free(ctx);
     82         } finally {
     83             super.finalize();
     84         }
     85     }
     86 
     87     @Override
     88     public boolean equals(Object o) {
     89         if (o == this) {
     90             return true;
     91         }
     92 
     93         if (!(o instanceof OpenSSLEngine)) {
     94             return false;
     95         }
     96 
     97         OpenSSLEngine other = (OpenSSLEngine) o;
     98 
     99         return other.getEngineContext() == ctx;
    100     }
    101 
    102     @Override
    103     public int hashCode() {
    104         return ctx;
    105     }
    106 }
    107