/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

#include "OpenSSLSocketInputStream.h"

#include <decaf/internal/net/ssl/openssl/OpenSSLSocket.h>

using namespace decaf;
using namespace decaf::lang;
using namespace decaf::lang::exceptions;
using namespace decaf::io;
using namespace decaf::internal;
using namespace decaf::internal::net;
using namespace decaf::internal::net::ssl;
using namespace decaf::internal::net::ssl::openssl;

////////////////////////////////////////////////////////////////////////////////
OpenSSLSocketInputStream::OpenSSLSocketInputStream( OpenSSLSocket* socket ) :
    InputStream(), socket( socket ), closed( false ) {

    if( socket == NULL ) {
        throw NullPointerException(
            __FILE__, __LINE__, "Socket instance passed was NULL." );
    }
}

////////////////////////////////////////////////////////////////////////////////
OpenSSLSocketInputStream::~OpenSSLSocketInputStream() {
}

////////////////////////////////////////////////////////////////////////////////
void OpenSSLSocketInputStream::close() {

    if( this->closed ) {
        return;
    }

    try{
        this->closed = true;
        this->socket->close();
    }
    DECAF_CATCH_RETHROW( IOException )
    DECAF_CATCHALL_THROW( IOException )
}

////////////////////////////////////////////////////////////////////////////////
int OpenSSLSocketInputStream::available() const {

    if( this->closed ){
        throw IOException(
            __FILE__, __LINE__, "The stream is closed" );
    }

    return this->socket->available();
}

////////////////////////////////////////////////////////////////////////////////
int OpenSSLSocketInputStream::doReadByte() {

    if( this->closed ){
        throw IOException(
            __FILE__, __LINE__, "The stream is closed" );
    }

    try{

        unsigned char buffer[1];
        int result = this->socket->read( buffer, 1, 0, 1 );
        return result == -1 ? result : buffer[0];
    }
    DECAF_CATCH_RETHROW( IOException )
    DECAF_CATCH_EXCEPTION_CONVERT( Exception, IOException )
    DECAF_CATCHALL_THROW( IOException )
}

////////////////////////////////////////////////////////////////////////////////
int OpenSSLSocketInputStream::doReadArrayBounded( unsigned char* buffer, int size, int offset, int length ) {

    if( closed ){
        throw IOException(
            __FILE__, __LINE__, "The stream is closed" );
    }

    if( buffer == NULL ) {
        throw NullPointerException(
            __FILE__, __LINE__, "Buffer passed was NULL." );
    }

    try{
        return this->socket->read( buffer, size, offset, length );
    }
    DECAF_CATCH_RETHROW( IOException )
    DECAF_CATCH_RETHROW( IndexOutOfBoundsException )
    DECAF_CATCH_RETHROW( NullPointerException )
    DECAF_CATCH_EXCEPTION_CONVERT( Exception, IOException )
    DECAF_CATCHALL_THROW( IOException )
}

////////////////////////////////////////////////////////////////////////////////
long long OpenSSLSocketInputStream::skip( long long num ) {

    try{

        if( num == 0 ) {
            return 0;
        }

        return InputStream::skip( num );
    }
    DECAF_CATCH_RETHROW( IOException )
    DECAF_CATCH_RETHROW( UnsupportedOperationException )
    DECAF_CATCH_EXCEPTION_CONVERT( Exception, IOException )
    DECAF_CATCHALL_THROW( IOException )
}