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8193682: Infinite loop in ZipOutputStream.close()

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Reviewed-by: lancea, coffeys
This commit is contained in:
Ravi Reddy 2021-12-01 15:35:00 +00:00 • committed by Sean Coffey
parent abaa073bcb
commit 1e9ed54d36
4 changed files with 229 additions and 67 deletions
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38
src/java.base/share/classes/java/util/zip/GZIPOutputStream.java
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@ -157,24 +157,30 @@ public class GZIPOutputStream extends DeflaterOutputStream {
*/
public void finish() throws IOException {
if (!def.finished()) {
def.finish();
while (!def.finished()) {
int len = def.deflate(buf, 0, buf.length);
if (def.finished() && len <= buf.length - TRAILER_SIZE) {
// last deflater buffer. Fit trailer at the end
writeTrailer(buf, len);
len = len + TRAILER_SIZE;
out.write(buf, 0, len);
return;
try {
def.finish();
while (!def.finished()) {
int len = def.deflate(buf, 0, buf.length);
if (def.finished() && len <= buf.length - TRAILER_SIZE) {
// last deflater buffer. Fit trailer at the end
writeTrailer(buf, len);
len = len + TRAILER_SIZE;
out.write(buf, 0, len);
return;
}
if (len > 0)
out.write(buf, 0, len);
}
if (len > 0)
out.write(buf, 0, len);
// if we can't fit the trailer at the end of the last
// deflater buffer, we write it separately
byte[] trailer = new byte[TRAILER_SIZE];
writeTrailer(trailer, 0);
out.write(trailer);
} catch (IOException e) {
if (usesDefaultDeflater)
def.end();
throw e;
}
// if we can't fit the trailer at the end of the last
// deflater buffer, we write it separately
byte[] trailer = new byte[TRAILER_SIZE];
writeTrailer(trailer, 0);
out.write(trailer);
}
}