> This PR updates the extra field validation added as part of > [JDK-8302483](https://bugs.openjdk.org/browse/JDK-8302483) to deal with > issues seen with 3rd party tools/libraries where a ZipException may be > encountered when opening select APK, ZIP or JAR files. Please see refer to > the links provided at the end the description for the more information :: > >> ZipException: Invalid CEN header (invalid zip64 extra data field size) > > 1. Extra field includes padding : > > > ----------------#1-------------------- > [Central Directory Header] > 0x3374: Signature : 0x02014b50 > 0x3378: Created Zip Spec : 0xa [1.0] > 0x3379: Created OS : 0x0 [MS-DOS] > 0x337a: VerMadeby : 0xa [0, 1.0] > 0x337b: VerExtract : 0xa [1.0] > 0x337c: Flag : 0x800 > 0x337e: Method : 0x0 [STORED] > 0x3380: Last Mod Time : 0x385ca437 [Thu Feb 28 20:33:46 EST 2008] > 0x3384: CRC : 0x694c6952 > 0x3388: Compressed Size : 0x624 > 0x338c: Uncompressed Size: 0x624 > 0x3390: Name Length : 0x1b > 0x3392: Extra Length : 0x7 > [tag=0xcafe, sz=0, data= ] > ->[tag=cafe, size=0] > 0x3394: Comment Length : 0x0 > 0x3396: Disk Start : 0x0 > 0x3398: Attrs : 0x0 > 0x339a: AttrsEx : 0x0 > 0x339e: Loc Header Offset: 0x0 > 0x33a2: File Name : res/drawable/size_48x48.jpg > > > The extra field tag of `0xcafe` has its data size set to `0`. and the extra > length is `7`. It is expected that you can use the tag's data size to > traverse the extra fields. > > > 2. The [BND tool](https://github.com/bndtools/bnd) added [problematic data to > the extra field](https://issues.apache.org/jira/browse/FELIX-6622): > > > ----------------#359-------------------- > [Central Directory Header] > 0x600b4: Signature : 0x02014b50 > 0x600b8: Created Zip Spec : 0x14 [2.0] > 0x600b9: Created OS : 0x0 [MS-DOS] > 0x600ba: VerMadeby : 0x14 [0, 2.0] > 0x600bb: VerExtract : 0x14 [2.0] > 0x600bc: Flag : 0x808 > 0x600be: Method : 0x8 [DEFLATED] > 0x600c0: Last Mod Time : 0x2e418983 [Sat Feb 01 17:12:06 EST 2003] > 0x600c4: CRC : 0xd8f689cb > 0x600c8: Compressed Size : 0x23e > 0x600cc: Uncompressed Size: 0x392 > 0x600d0: Name Length : 0x20 > 0x600d2: Extra Length : 0x8 > [tag=0xbfef, sz=61373, data= > 0x600d4: Comment Length : 0x0 > 0x600d6: Disk Start : 0x0 > 0x600d8: Attrs : 0x0 > 0x600da: ...
Lance Andersen has updated the pull request incrementally with one additional commit since the last revision: Added an additional test with with 0 extra header followed by an extra header with a data size ------------- Changes: - all: https://git.openjdk.org/jdk/pull/15273/files - new: https://git.openjdk.org/jdk/pull/15273/files/5f27087b..eee210a1 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=15273&range=04 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15273&range=03-04 Stats: 68 lines in 1 file changed: 68 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/15273.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15273/head:pull/15273 PR: https://git.openjdk.org/jdk/pull/15273
