/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.websockets.core.protocol.version07;
import io.undertow.websockets.core.StreamSourceFrameChannel;
import io.undertow.websockets.core.WebSocketFrameType;
import io.undertow.websockets.core.WebSocketMessages;
import io.undertow.connector.PooledByteBuffer;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
*/
class WebSocket07CloseFrameSourceChannel extends StreamSourceFrameChannel {
WebSocket07CloseFrameSourceChannel(WebSocket07Channel wsChannel, int rsv, Masker masker, PooledByteBuffer pooled, long frameLength) {
// no fragmentation allowed per spec
super(wsChannel, WebSocketFrameType.CLOSE, rsv, true, pooled, frameLength, masker, new CloseFrameValidatorChannelFunction(wsChannel));
}
WebSocket07CloseFrameSourceChannel(WebSocket07Channel wsChannel, int rsv, PooledByteBuffer pooled, long frameLength) {
// no fragmentation allowed per spec
super(wsChannel, WebSocketFrameType.CLOSE, rsv, true, pooled, frameLength, null, new CloseFrameValidatorChannelFunction(wsChannel));
}
public static class CloseFrameValidatorChannelFunction extends UTF8Checker {
private final WebSocket07Channel wsChannel;
private int statusBytesRead;
private int status;
CloseFrameValidatorChannelFunction(WebSocket07Channel wsChannel) {
this.wsChannel = wsChannel;
}
@Override
public void afterRead(ByteBuffer buf, int position, int length) throws IOException {
int i = 0;
if(statusBytesRead < 2) {
while (statusBytesRead < 2 && i < length) {
status <<= 8;
status += buf.get(position + i) & 0xFF;
statusBytesRead ++;
++i;
}
if(statusBytesRead == 2) {
// Must have 2 byte integer within the valid range
if (status >= 0 && status <= 999 || status >= 1004 && status <= 1006
|| status >= 1012 && status <= 2999 || status >= 5000) {
IOException exception = WebSocketMessages.MESSAGES.invalidCloseFrameStatusCode(status);
wsChannel.markReadsBroken(exception);
throw exception;
}
}
}
super.afterRead(buf, position + i, length - i);
}
}
}