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https://issues.apache.org/jira/browse/COMPRESS-249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13844247#comment-13844247
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Stefan Bodewig commented on COMPRESS-249:
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no problem, you may want to verify the fix, though.
> TarArchiveInputStream does not properly read from underlying InputStream
> ------------------------------------------------------------------------
>
> Key: COMPRESS-249
> URL: https://issues.apache.org/jira/browse/COMPRESS-249
> Project: Commons Compress
> Issue Type: Bug
> Components: Archivers
> Affects Versions: 1.6
> Reporter: Ilja Pavkovic
> Priority: Critical
> Fix For: 1.7
>
>
> TarArchiveInputStream reads header with its protected function readRecord().
> This code improperly assumes that is.read(buf) always fills the whole buffer.
> This assumption is wrong. A proper implementation needs to call read multiple
> times until all bytes are read:
> {code:title=TarArchiveInputStream.java|borderStyle=solid}
> protected byte[] readRecord() throws IOException {
> byte[] record = new byte[recordSize];
> // start change
> // int readNow = is.read(buf);
> int readNow = 0;
> while(readNow < recordSize){
> int bytesRead = is.read(record,0, recordSize - readNow);
> if(bytesRead == -1) {
> break;
> }
> readNow += bytesRead;
> }
> // end change
> count(readNow);
> if (readNow != recordSize) {
> return null;
> }
> return record;
> }
> {code}
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