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Fix buffer leak in test which was introduced while implement ZLIB_OR_NONE support. Related to [#2269]

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This commit is contained in:
Norman Maurer 2014-03-06 20:03:40 +01:00
parent 05874ad97f
commit d89bfc593e
2 changed files with 87 additions and 68 deletions
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2
codec/src/main/java/io/netty/handler/codec/compression/JdkZlibDecoder.java
View File

@ -385,7 +385,7 @@ public class JdkZlibDecoder extends ZlibDecoder {
* You can lookup the details in the ZLIB RFC:
* <a href="http://tools.ietf.org/html/rfc1950#section-2.2">RFC 1950</a>.
*/
private boolean looksLikeZlib(short cmf_flg) {
private static boolean looksLikeZlib(short cmf_flg) {
return (cmf_flg & 0x7800) == 0x7800 &&
cmf_flg % 31 == 0;
}

153
codec/src/test/java/io/netty/handler/codec/compression/ZlibTest.java
View File

@ -48,91 +48,110 @@ public abstract class ZlibTest {
ByteBuf deflatedData = Unpooled.wrappedBuffer(gzip("message"));
EmbeddedChannel chDecoderGZip = new EmbeddedChannel(createDecoder(ZlibWrapper.GZIP));
chDecoderGZip.writeInbound(deflatedData.copy());
assertTrue(chDecoderGZip.finish());
ByteBuf buf = chDecoderGZip.readInbound();
assertEquals(buf, data);
assertNull(chDecoderGZip.readInbound());
data.release();
deflatedData.release();
buf.release();
try {
chDecoderGZip.writeInbound(deflatedData.copy());
assertTrue(chDecoderGZip.finish());
ByteBuf buf = chDecoderGZip.readInbound();
assertEquals(buf, data);
assertNull(chDecoderGZip.readInbound());
data.release();
deflatedData.release();
buf.release();
} finally {
// close channel to prevent any leak even on exception
chDecoderGZip.close();
}
}
private void testCompress0(ZlibWrapper encoderWrapper, ZlibWrapper decoderWrapper, ByteBuf data) throws Exception {
EmbeddedChannel chEncoder = new EmbeddedChannel(createEncoder(encoderWrapper));
chEncoder.writeOutbound(data.copy());
chEncoder.flush();
EmbeddedChannel chDecoderZlib = new EmbeddedChannel(createDecoder(decoderWrapper));
for (;;) {
ByteBuf deflatedData = chEncoder.readOutbound();
if (deflatedData == null) {
break;
}
chDecoderZlib.writeInbound(deflatedData);
}
byte[] decompressed = new byte[data.readableBytes()];
int offset = 0;
for (;;) {
ByteBuf buf = chDecoderZlib.readInbound();
if (buf == null) {
break;
}
int length = buf.readableBytes();
buf.readBytes(decompressed, offset, length);
offset += length;
buf.release();
if (offset == decompressed.length) {
break;
}
}
assertEquals(data, Unpooled.wrappedBuffer(decompressed));
assertNull(chDecoderZlib.readInbound());
try {
chEncoder.writeOutbound(data.copy());
chEncoder.flush();
// Closing an encoder channel will generate a footer.
assertTrue(chEncoder.finish());
for (;;) {
Object msg = chEncoder.readOutbound();
if (msg == null) {
break;
for (;;) {
ByteBuf deflatedData = chEncoder.readOutbound();
if (deflatedData == null) {
break;
}
chDecoderZlib.writeInbound(deflatedData);
}
ReferenceCountUtil.release(msg);
}
// But, the footer will be decoded into nothing. It's only for validation.
assertFalse(chDecoderZlib.finish());
data.release();
byte[] decompressed = new byte[data.readableBytes()];
int offset = 0;
for (;;) {
ByteBuf buf = chDecoderZlib.readInbound();
if (buf == null) {
break;
}
int length = buf.readableBytes();
buf.readBytes(decompressed, offset, length);
offset += length;
buf.release();
if (offset == decompressed.length) {
break;
}
}
assertEquals(data, Unpooled.wrappedBuffer(decompressed));
assertNull(chDecoderZlib.readInbound());
// Closing an encoder channel will generate a footer.
assertTrue(chEncoder.finish());
for (;;) {
Object msg = chEncoder.readOutbound();
if (msg == null) {
break;
}
ReferenceCountUtil.release(msg);
}
// But, the footer will be decoded into nothing. It's only for validation.
assertFalse(chDecoderZlib.finish());
data.release();
} finally {
// close channels in all cases to guard against leak when exception was thrown
chEncoder.close();
chDecoderZlib.close();
}
}
private void testCompressNone(ZlibWrapper encoderWrapper, ZlibWrapper decoderWrapper) throws Exception {
EmbeddedChannel chEncoder = new EmbeddedChannel(createEncoder(encoderWrapper));
// Closing an encoder channel without writing anything should generate both header and footer.
assertTrue(chEncoder.finish());
EmbeddedChannel chDecoderZlib = new EmbeddedChannel(createDecoder(decoderWrapper));
for (;;) {
ByteBuf deflatedData = chEncoder.readOutbound();
if (deflatedData == null) {
break;
}
chDecoderZlib.writeInbound(deflatedData);
}
// Decoder should not generate anything at all.
for (;;) {
ByteBuf buf = chDecoderZlib.readInbound();
if (buf == null) {
break;
try {
// Closing an encoder channel without writing anything should generate both header and footer.
assertTrue(chEncoder.finish());
for (;;) {
ByteBuf deflatedData = chEncoder.readOutbound();
if (deflatedData == null) {
break;
}
chDecoderZlib.writeInbound(deflatedData);
}
buf.release();
fail("should decode nothing");
}
// Decoder should not generate anything at all.
boolean decoded = false;
for (;;) {
ByteBuf buf = chDecoderZlib.readInbound();
if (buf == null) {
break;
}
assertFalse(chDecoderZlib.finish());
buf.release();
decoded = true;
}
assertFalse("should decode nothing", decoded);
assertFalse(chDecoderZlib.finish());
} finally {
// close channels in all cases to guard against leak when exception was thrown
chEncoder.close();
chDecoderZlib.close();
}
}
private void testCompressSmall(ZlibWrapper encoderWrapper, ZlibWrapper decoderWrapper) throws Exception {