[COMPRESS-451] IOUtils.copy hangs with misconfigured or corrupted inputs

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0
• Fix Version/s: 1.17
• Assignee: Unassigned
• Reporter: John Doe
• Created: 03/May/18 21:49
• Updated: 04/May/18 04:06
• Resolved: 04/May/18 04:06

Description

When the buffersize is misconfigured or corrupted, i.e., 0, the while loop in IOUtils.copy() function hangs endlessly. Here is the code snippet.

    public static long copy(final InputStream input, final OutputStream output, int buffersize) throws IOException {
        final byte[] buffer = new byte[buffersize];//buffersize is misconfigured or corrupted
        int n = 0;
        long count=0;
        while (-1 != (n = input.read(buffer))) {//input.read returns 0 when buffer.length==0
            output.write(buffer, 0, n);
            count += n;
        }
        return count;
    }