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290
java/org/apache/catalina/connector/CoyoteInputStream.java
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290
java/org/apache/catalina/connector/CoyoteInputStream.java
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.connector;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.security.AccessController;
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import java.security.PrivilegedActionException;
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import java.security.PrivilegedExceptionAction;
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import javax.servlet.ReadListener;
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import javax.servlet.ServletInputStream;
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import org.apache.catalina.security.SecurityUtil;
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import org.apache.tomcat.util.res.StringManager;
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/**
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* This class handles reading bytes.
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*
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* @author Remy Maucherat
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*/
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public class CoyoteInputStream extends ServletInputStream {
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protected static final StringManager sm = StringManager.getManager(CoyoteInputStream.class);
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protected InputBuffer ib;
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protected CoyoteInputStream(InputBuffer ib) {
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this.ib = ib;
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}
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/**
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* Clear facade.
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*/
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void clear() {
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ib = null;
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}
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/**
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* Prevent cloning the facade.
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*/
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@Override
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protected Object clone() throws CloneNotSupportedException {
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throw new CloneNotSupportedException();
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}
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@Override
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public int read() throws IOException {
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checkNonBlockingRead();
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if (SecurityUtil.isPackageProtectionEnabled()) {
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try {
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Integer result = AccessController
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.doPrivileged(new PrivilegedExceptionAction<Integer>() {
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@Override
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public Integer run() throws IOException {
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Integer integer = Integer.valueOf(ib.readByte());
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return integer;
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}
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});
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return result.intValue();
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} catch (PrivilegedActionException pae) {
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Exception e = pae.getException();
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if (e instanceof IOException) {
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throw (IOException) e;
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} else {
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throw new RuntimeException(e.getMessage(), e);
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}
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}
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} else {
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return ib.readByte();
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}
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}
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@Override
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public int available() throws IOException {
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if (SecurityUtil.isPackageProtectionEnabled()) {
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try {
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Integer result = AccessController
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.doPrivileged(new PrivilegedExceptionAction<Integer>() {
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@Override
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public Integer run() throws IOException {
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Integer integer = Integer.valueOf(ib.available());
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return integer;
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}
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});
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return result.intValue();
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} catch (PrivilegedActionException pae) {
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Exception e = pae.getException();
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if (e instanceof IOException) {
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throw (IOException) e;
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} else {
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throw new RuntimeException(e.getMessage(), e);
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}
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}
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} else {
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return ib.available();
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}
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}
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@Override
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public int read(final byte[] b) throws IOException {
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checkNonBlockingRead();
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if (SecurityUtil.isPackageProtectionEnabled()) {
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try {
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Integer result = AccessController
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.doPrivileged(new PrivilegedExceptionAction<Integer>() {
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@Override
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public Integer run() throws IOException {
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Integer integer = Integer.valueOf(ib.read(b, 0, b.length));
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return integer;
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}
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});
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return result.intValue();
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} catch (PrivilegedActionException pae) {
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Exception e = pae.getException();
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if (e instanceof IOException) {
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throw (IOException) e;
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} else {
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throw new RuntimeException(e.getMessage(), e);
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}
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}
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} else {
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return ib.read(b, 0, b.length);
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}
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}
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@Override
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public int read(final byte[] b, final int off, final int len) throws IOException {
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checkNonBlockingRead();
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if (SecurityUtil.isPackageProtectionEnabled()) {
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try {
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Integer result = AccessController
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.doPrivileged(new PrivilegedExceptionAction<Integer>() {
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@Override
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public Integer run() throws IOException {
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Integer integer = Integer.valueOf(ib.read(b, off, len));
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return integer;
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}
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});
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return result.intValue();
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} catch (PrivilegedActionException pae) {
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Exception e = pae.getException();
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if (e instanceof IOException) {
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throw (IOException) e;
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} else {
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throw new RuntimeException(e.getMessage(), e);
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}
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}
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} else {
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return ib.read(b, off, len);
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}
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}
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/**
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* Transfers bytes from the buffer to the specified ByteBuffer. After the
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* operation the position of the ByteBuffer will be returned to the one
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* before the operation, the limit will be the position incremented by
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* the number of the transferred bytes.
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*
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* @param b the ByteBuffer into which bytes are to be written.
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* @return an integer specifying the actual number of bytes read, or -1 if
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* the end of the stream is reached
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* @throws IOException if an input or output exception has occurred
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*/
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public int read(final ByteBuffer b) throws IOException {
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checkNonBlockingRead();
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if (SecurityUtil.isPackageProtectionEnabled()) {
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try {
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Integer result = AccessController
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.doPrivileged(new PrivilegedExceptionAction<Integer>() {
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@Override
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public Integer run() throws IOException {
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Integer integer = Integer.valueOf(ib.read(b));
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return integer;
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}
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});
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return result.intValue();
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} catch (PrivilegedActionException pae) {
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Exception e = pae.getException();
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if (e instanceof IOException) {
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throw (IOException) e;
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} else {
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throw new RuntimeException(e.getMessage(), e);
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}
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}
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} else {
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return ib.read(b);
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}
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}
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@Override
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public int readLine(byte[] b, int off, int len) throws IOException {
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return super.readLine(b, off, len);
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}
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/**
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* Close the stream
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* Since we re-cycle, we can't allow the call to super.close()
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* which would permanently disable us.
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*/
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@Override
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public void close() throws IOException {
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if (SecurityUtil.isPackageProtectionEnabled()) {
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try {
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AccessController.doPrivileged(new PrivilegedExceptionAction<Void>() {
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@Override
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public Void run() throws IOException {
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ib.close();
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return null;
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}
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});
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} catch (PrivilegedActionException pae) {
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Exception e = pae.getException();
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if (e instanceof IOException) {
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throw (IOException) e;
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} else {
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throw new RuntimeException(e.getMessage(), e);
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}
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}
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} else {
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ib.close();
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}
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}
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@Override
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public boolean isFinished() {
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return ib.isFinished();
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}
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@Override
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public boolean isReady() {
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return ib.isReady();
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}
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@Override
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public void setReadListener(ReadListener listener) {
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ib.setReadListener(listener);
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}
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private void checkNonBlockingRead() {
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if (!ib.isBlocking() && !ib.isReady()) {
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throw new IllegalStateException(sm.getString("coyoteInputStream.nbNotready"));
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}
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}
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}
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