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8278794: Infinite loop in DeflaterOutputStream.finish()

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Reviewed-by: coffeys, lancea
This commit is contained in:
Ravi Reddy 2022-03-18 15:31:30 +00:00 • committed by Lance Andersen
parent b2aa085e67
commit ff0b0927a2
5 changed files with 231 additions and 154 deletions
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12
src/java.base/share/classes/java/util/zip/Deflater.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -895,6 +895,16 @@ public class Deflater {
throw new NullPointerException("Deflater has been closed");
}
/**
* Returns the value of 'finish' flag.
* 'finish' will be set to true if def.finish() method is called.
*/
boolean shouldFinish() {
synchronized (zsRef) {
return finish;
}
}
private static native long init(int level, int strategy, boolean nowrap);
private static native void setDictionary(long addr, byte[] b, int off,
int len);

14
src/java.base/share/classes/java/util/zip/DeflaterOutputStream.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -220,9 +220,15 @@ public class DeflaterOutputStream extends FilterOutputStream {
*/
public void finish() throws IOException {
if (!def.finished()) {
def.finish();
while (!def.finished()) {
deflate();
try{
def.finish();
while (!def.finished()) {
deflate();
}
} catch(IOException e) {
if (usesDefaultDeflater)
def.end();
throw e;
}
}
}

4
src/java.base/share/classes/java/util/zip/ZipOutputStream.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -314,7 +314,7 @@ public class ZipOutputStream extends DeflaterOutputStream implements ZipConstant
crc.reset();
current = null;
} catch (IOException e) {
if (usesDefaultDeflater && !(e instanceof ZipException))
if (def.shouldFinish() && usesDefaultDeflater && !(e instanceof ZipException))
def.end();
throw e;
}