org.conscrypt.OpenSSLBIOSink Maven / Gradle / Ivy
/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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 org.conscrypt;
import java.io.ByteArrayOutputStream;
/**
* Wraps a BoringSSL BIO to act as a place to write out data.
*/
final class OpenSSLBIOSink {
private final long ctx;
private final ByteArrayOutputStream buffer;
private int position;
static OpenSSLBIOSink create() {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
return new OpenSSLBIOSink(buffer);
}
private OpenSSLBIOSink(ByteArrayOutputStream buffer) {
ctx = NativeCrypto.create_BIO_OutputStream(buffer);
this.buffer = buffer;
}
int available() {
return buffer.size() - position;
}
void reset() {
buffer.reset();
position = 0;
}
long skip(long byteCount) {
int maxLength = Math.min(available(), (int) byteCount);
position += maxLength;
if (position == buffer.size()) {
reset();
}
return maxLength;
}
long getContext() {
return ctx;
}
byte[] toByteArray() {
return buffer.toByteArray();
}
int position() {
return position;
}
@Override
protected void finalize() throws Throwable {
try {
NativeCrypto.BIO_free_all(ctx);
} finally {
super.finalize();
}
}
}