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Fix possible NPE in DefaultHttp2UnknownFrame#equals (#9625)

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Motivation:
`DefaultHttp2UnknownFrame#equals` may produce NPE due to
incorrect comparison of `stream` field.

Modification:
- Fix the `stream` field compare.
- Cleanup usage of class fields: use direct access instead of getters
(because the class is final).

Result:
No NPE in `equals` method.
This commit is contained in:
Nikolay Fedorovskikh 2019-10-07 12:00:38 +05:00 committed by Norman Maurer
parent 4dc1eccf60
commit 1fb5ff15a8
1 changed files with 12 additions and 10 deletions
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22
codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2UnknownFrame.java
View File

@ -80,7 +80,7 @@ public final class DefaultHttp2UnknownFrame extends DefaultByteBufHolder impleme
@Override
public DefaultHttp2UnknownFrame replace(ByteBuf content) {
return new DefaultHttp2UnknownFrame(frameType, flags, content).stream(stream());
return new DefaultHttp2UnknownFrame(frameType, flags, content).stream(stream);
}
@Override
@ -97,8 +97,8 @@ public final class DefaultHttp2UnknownFrame extends DefaultByteBufHolder impleme
@Override
public String toString() {
return StringUtil.simpleClassName(this) + "(frameType=" + frameType() + ", stream=" + stream() +
", flags=" + flags() + ", content=" + contentToString() + ')';
return StringUtil.simpleClassName(this) + "(frameType=" + frameType + ", stream=" + stream +
", flags=" + flags + ", content=" + contentToString() + ')';
}
@Override
@ -119,18 +119,20 @@ public final class DefaultHttp2UnknownFrame extends DefaultByteBufHolder impleme
return false;
}
DefaultHttp2UnknownFrame other = (DefaultHttp2UnknownFrame) o;
return super.equals(other) && flags().equals(other.flags())
&& frameType() == other.frameType() && (stream() == null && other.stream() == null) ||
stream().equals(other.stream());
Http2FrameStream otherStream = other.stream();
return (stream == otherStream || otherStream != null && otherStream.equals(stream))
&& flags.equals(other.flags())
&& frameType == other.frameType()
&& super.equals(other);
}
@Override
public int hashCode() {
int hash = super.hashCode();
hash = hash * 31 + frameType();
hash = hash * 31 + flags().hashCode();
if (stream() != null) {
hash = hash * 31 + stream().hashCode();
hash = hash * 31 + frameType;
hash = hash * 31 + flags.hashCode();
if (stream != null) {
hash = hash * 31 + stream.hashCode();
}
return hash;