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SPDY: ensure SpdyHeaderBlockRawDecoder always reads entire input

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This commit is contained in:
Jeff Pinner 2014-05-04 15:08:07 -07:00 committed by Norman Maurer
parent 326efe5b42
commit 1351349243
4 changed files with 45 additions and 17 deletions
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31
codec-http/src/main/java/io/netty/handler/codec/spdy/SpdyHeaderBlockRawDecoder.java
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@ -27,6 +27,8 @@ public class SpdyHeaderBlockRawDecoder extends SpdyHeaderBlockDecoder {
private State state;
private ByteBuf cumulation;
private int headerSize;
private int numHeaders;
private int length;
@ -67,6 +69,24 @@ public class SpdyHeaderBlockRawDecoder extends SpdyHeaderBlockDecoder {
throw new NullPointerException("frame");
}
if (cumulation == null) {
decodeHeaderBlock(headerBlock, frame);
if (headerBlock.isReadable()) {
cumulation = headerBlock.alloc().buffer(headerBlock.readableBytes());
cumulation.writeBytes(headerBlock);
}
} else {
cumulation.writeBytes(headerBlock);
decodeHeaderBlock(cumulation, frame);
if (cumulation.isReadable()) {
cumulation.discardReadBytes();
} else {
cumulation = null;
}
}
}
protected void decodeHeaderBlock(ByteBuf headerBlock, SpdyHeadersFrame frame) throws Exception {
int skipLength;
while (headerBlock.isReadable()) {
switch(state) {
@ -267,6 +287,9 @@ public class SpdyHeaderBlockRawDecoder extends SpdyHeaderBlockDecoder {
if (state != State.END_HEADER_BLOCK) {
frame.setInvalid();
}
releaseBuffer();
// Initialize header block decoding fields
headerSize = 0;
name = null;
@ -275,5 +298,13 @@ public class SpdyHeaderBlockRawDecoder extends SpdyHeaderBlockDecoder {
@Override
void end() {
releaseBuffer();
}
private void releaseBuffer() {
if (cumulation != null) {
cumulation.release();
cumulation = null;
}
}
}

2
codec-http/src/main/java/io/netty/handler/codec/spdy/SpdyHeaderBlockZlibDecoder.java
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@ -86,7 +86,7 @@ final class SpdyHeaderBlockZlibDecoder extends SpdyHeaderBlockRawDecoder {
}
if (frame != null) {
decompressed.writerIndex(decompressed.writerIndex() + numBytes);
super.decode(decompressed, frame);
super.decodeHeaderBlock(decompressed, frame);
decompressed.discardReadBytes();
}

28
codec-http/src/test/java/io/netty/handler/codec/spdy/SpdyHeaderBlockRawDecoderTest.java
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@ -391,25 +391,21 @@ public class SpdyHeaderBlockRawDecoderTest {
@Test
public void testMultipleDecodes() throws Exception {
ByteBuf numHeaders = Unpooled.buffer(4);
numHeaders.writeInt(1);
ByteBuf headerBlock = Unpooled.buffer(21);
headerBlock.writeInt(1);
headerBlock.writeInt(4);
headerBlock.writeBytes(nameBytes);
headerBlock.writeInt(5);
headerBlock.writeBytes(valueBytes);
ByteBuf nameBlock = Unpooled.buffer(8);
nameBlock.writeInt(4);
nameBlock.writeBytes(nameBytes);
ByteBuf valueBlock = Unpooled.buffer(9);
valueBlock.writeInt(5);
valueBlock.writeBytes(valueBytes);
decoder.decode(numHeaders, frame);
decoder.decode(nameBlock, frame);
decoder.decode(valueBlock, frame);
int readableBytes = headerBlock.readableBytes();
for (int i = 0; i < readableBytes; i++) {
ByteBuf headerBlockSegment = headerBlock.slice(i, 1);
decoder.decode(headerBlockSegment, frame);
assertFalse(headerBlockSegment.isReadable());
}
decoder.endHeaderBlock(frame);
assertFalse(numHeaders.isReadable());
assertFalse(nameBlock.isReadable());
assertFalse(valueBlock.isReadable());
assertFalse(frame.isInvalid());
assertEquals(1, frame.headers().names().size());
assertTrue(frame.headers().contains(name));

1
codec-http/src/test/java/io/netty/handler/codec/spdy/SpdyHeaderBlockZlibDecoderTest.java
View File

@ -92,6 +92,7 @@ public class SpdyHeaderBlockZlibDecoderTest {
for (int i = 0; i < readableBytes; i++) {
ByteBuf headerBlockSegment = headerBlock.slice(i, 1);
decoder.decode(headerBlockSegment, frame);
assertFalse(headerBlockSegment.isReadable());
}
decoder.endHeaderBlock(frame);