[COMPRESS-84] GZip corrupt files are partially unzipped

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 1.0
• Component/s: Compressors

Environment

Apache Maven 2.2.0 (r788681; 2009-06-26 15:04:01+0200)
Java version: 1.6.0_14
Java home: /opt/jdk1.6.0_14/jre
Default locale: fr_FR, platform encoding: UTF-8
OS name: "linux" version: "2.6.30.5-28.rc2.fc11.i586" arch: "i386" Family: "unix"

In POM :

		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-compress</artifactId>
			<version>1.0</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>

• Assignee: Unassigned
• Reporter: Florent Charton
• Created: 20/Aug/09 12:24
• Updated: 13/Apr/13 17:05
• Resolved: 13/Apr/13 17:05

Description

While trying to decompres gzipped data with random removed bytes, no exceptions are thrown. Same file with zcat command line utility produces error below

gzip: badfiles-red-64/data.txt.gz: invalid compressed data--crc error
gzip: badfiles-red-64/data.txt.gz: invalid compressed data--length error

The code below should throw an exception about corrupted file

Sample extraction code

        CompressorInputStream cis = null;
        try {
            cis = new CompressorStreamFactory().createCompressorInputStream(
                    "gz", new FileInputStream("badfiles-red-64/data.txt.gz"));
        } catch (CompressorException e) {
            // This will never happen unless "gz" is changed 2 lines above
            log.error(e.getMessage(), e);
            throw new ProcessingException(e);
        }
        try {
            while (cis.read() > 0) {
            }
        } catch (IOException e) {
            log.error(e.getMessage(), e);
            throw new ProcessingException(e);
        }