Probleme mit PAX erweitert Teer-Header

Question

Ich habe einige Probleme in Bezug auf die erweiterte PAX-Tar Header-Standard.

Ich schrieb ein Programm, das eine Datei Header-by-Header liest und einige Informationen ausdruckt, dabei die Urstar-Prüfsumme sehr wichtig. Hier ist die Ausgabe, wenn ich einen PAX-Teer zu meinem Programm füttere. Es ist in Java geschrieben.

run: 
Reading at 0 
Verifying header checksum... 
Checksum valid. 
Found: .PKGINFO 
Header is PAX: false 
File size: 1055 
Next header offset: 2048 
-------------------------------------- 
Reading at 2048 
Verifying header checksum... 
Checksum valid. 
Found: .BUILDINFO 
Header is PAX: false 
File size: 8419 
Next header offset: 11264 
-------------------------------------- 
Reading at 11264 
Verifying header checksum... 
Checksum valid. 
Found: .INSTALL 
Header is PAX: false 
File size: 175 
Next header offset: 12288 
-------------------------------------- 
Reading at 12288 
Verifying header checksum... 
Checksum valid. 
Found: .MTREE 
Header is PAX: false 
File size: 4025 
Next header offset: 16896 
-------------------------------------- 
Reading at 16896 
Verifying header checksum... 
Checksum valid. 
Found: usr/ 
Header is PAX: false 
File size: 0 
Next header offset: 17408 
-------------------------------------- 
Reading at 17408 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/ 
Header is PAX: false 
File size: 0 
Next header offset: 17920 
-------------------------------------- 
Reading at 17920 
Verifying header checksum... 
Checksum valid. 
Found: usr/bin/ 
Header is PAX: false 
File size: 0 
Next header offset: 18432 
-------------------------------------- 
Reading at 18432 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/ 
Header is PAX: false 
File size: 0 
Next header offset: 18944 
-------------------------------------- 
Reading at 18944 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/ 
Header is PAX: false 
File size: 0 
Next header offset: 19456 
-------------------------------------- 
Reading at 19456 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/applications/ 
Header is PAX: false 
File size: 0 
Next header offset: 19968 
-------------------------------------- 
Reading at 19968 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/applications/firefox.desktop 
Header is PAX: false 
File size: 13148 
Next header offset: 33792 
-------------------------------------- 
Reading at 33792 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/ 
Header is PAX: false 
File size: 0 
Next header offset: 34304 
-------------------------------------- 
Reading at 34304 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/16x16/ 
Header is PAX: false 
File size: 0 
Next header offset: 34816 
-------------------------------------- 
Reading at 34816 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/22x22/ 
Header is PAX: false 
File size: 0 
Next header offset: 35328 
-------------------------------------- 
Reading at 35328 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/24x24/ 
Header is PAX: false 
File size: 0 
Next header offset: 35840 
-------------------------------------- 
Reading at 35840 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/32x32/ 
Header is PAX: false 
File size: 0 
Next header offset: 36352 
-------------------------------------- 
Reading at 36352 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/48x48/ 
Header is PAX: false 
File size: 0 
Next header offset: 36864 
-------------------------------------- 
Reading at 36864 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/256x256/ 
Header is PAX: false 
File size: 0 
Next header offset: 37376 
-------------------------------------- 
Reading at 37376 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/64x64/ 
Header is PAX: false 
File size: 0 
Next header offset: 37888 
-------------------------------------- 
Reading at 37888 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/128x128/ 
Header is PAX: false 
File size: 0 
Next header offset: 38400 
-------------------------------------- 
Reading at 38400 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/192x192/ 
Header is PAX: false 
File size: 0 
Next header offset: 38912 
-------------------------------------- 
Reading at 38912 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/384x384/ 
Header is PAX: false 
File size: 0 
Next header offset: 39424 
-------------------------------------- 
Reading at 39424 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/symbolic/ 
Header is PAX: false 
File size: 0 
Next header offset: 39936 
-------------------------------------- 
Reading at 39936 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/symbolic/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 40448 
-------------------------------------- 
Reading at 40448 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/symbolic/apps/PaxHeader/firefox-symbolic.svg 
Header is PAX: true 
File size: 118 
Next header offset: 41472 
-------------------------------------- 
Reading at 41472 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/symbolic/apps/firefox-symbolic.svg 
Header is PAX: false 
File size: 6935 
Next header offset: 49152 
-------------------------------------- 
Reading at 49152 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/384x384/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 49664 
-------------------------------------- 
Reading at 49664 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/384x384/apps/PaxHeader/firefox.png 
Header is PAX: true 
File size: 118 
Next header offset: 50688 
-------------------------------------- 
Reading at 50688 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/384x384/apps/firefox.png 
Header is PAX: false 
File size: 78972 
Next header offset: 130560 
-------------------------------------- 
Reading at 130560 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/192x192/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 131072 
-------------------------------------- 
Reading at 131072 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/192x192/apps/PaxHeader/firefox.png 
Header is PAX: true 
File size: 118 
Next header offset: 132096 
-------------------------------------- 
Reading at 132096 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/192x192/apps/firefox.png 
Header is PAX: false 
File size: 30788 
Next header offset: 163840 
-------------------------------------- 
Reading at 163840 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/128x128/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 164352 
-------------------------------------- 
Reading at 164352 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/128x128/apps/PaxHeader/firefox.png 
Header is PAX: true 
File size: 118 
Next header offset: 165376 
-------------------------------------- 
Reading at 165376 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/128x128/apps/firefox.png 
Header is PAX: false 
File size: 17225 
Next header offset: 183296 
-------------------------------------- 
Reading at 183296 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/64x64/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 183808 
-------------------------------------- 
Reading at 183808 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/64x64/apps/PaxHeader/firefox.png 
Header is PAX: true 
File size: 118 
Next header offset: 184832 
-------------------------------------- 
Reading at 184832 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/64x64/apps/firefox.png 
Header is PAX: false 
File size: 6081 
Next header offset: 191488 
-------------------------------------- 
Reading at 191488 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/256x256/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 192000 
-------------------------------------- 
Reading at 192000 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/256x256/apps/PaxHeader/firefox.png 
Header is PAX: true 
File size: 118 
Next header offset: 193024 
-------------------------------------- 
Reading at 193024 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/256x256/apps/firefox.png 
Header is PAX: false 
File size: 44148 
Next header offset: 238080 
-------------------------------------- 
Reading at 238080 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/48x48/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 238592 
-------------------------------------- 
Reading at 238592 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/48x48/apps/PaxHeader/firefox.png 
Header is PAX: true 
File size: 118 
Next header offset: 239616 
-------------------------------------- 
Reading at 239616 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/48x48/apps/firefox.png 
Header is PAX: false 
File size: 4096 
Next header offset: 244736 
-------------------------------------- 
Reading at 244736 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/32x32/apps/firefox.png 
Header is PAX: false 
File size: 2472 
Next header offset: 247808 
-------------------------------------- 
Reading at 247808 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/24x24/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 248320 
-------------------------------------- 
Reading at 248320 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/24x24/apps/firefox.png 
Header is PAX: false 
File size: 1327 
Next header offset: 250368 
-------------------------------------- 
Reading at 250368 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/22x22/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 250880 
-------------------------------------- 
Reading at 250880 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/22x22/apps/firefox.png 
Header is PAX: false 
File size: 1319 
Next header offset: 252928 
-------------------------------------- 
Reading at 252928 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/16x16/apps/ 
Header is PAX: false 
File size: 0 
Next header offset: 253440 
-------------------------------------- 
Reading at 253440 
Verifying header checksum... 
Checksum valid. 
Found: usr/share/icons/hicolor/16x16/apps/firefox.png 
Header is PAX: false 
File size: 829 
Next header offset: 254976 
-------------------------------------- 
Reading at 254976 
Verifying header checksum... 
Checksum valid. 
Found: usr/bin/firefox 
Header is PAX: false 
File size: 0 
Next header offset: 255488 
-------------------------------------- 
Reading at 255488 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/ 
Header is PAX: false 
File size: 0 
Next header offset: 256000 
-------------------------------------- 
Reading at 256000 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/gtk2/ 
Header is PAX: false 
File size: 0 
Next header offset: 256512 
-------------------------------------- 
Reading at 256512 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/ 
Header is PAX: false 
File size: 0 
Next header offset: 257024 
-------------------------------------- 
Reading at 257024 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/defaults/ 
Header is PAX: false 
File size: 0 
Next header offset: 257536 
-------------------------------------- 
Reading at 257536 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/webapprt/ 
Header is PAX: false 
File size: 0 
Next header offset: 258048 
-------------------------------------- 
Reading at 258048 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/gmp-clearkey/ 
Header is PAX: false 
File size: 0 
Next header offset: 258560 
-------------------------------------- 
Reading at 258560 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/PaxHeader/omni.ja 
Header is PAX: true 
File size: 87 
Next header offset: 259584 
-------------------------------------- 
Reading at 259584 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/omni.ja 
Header is PAX: false 
File size: 9588234 
Next header offset: 9848832 
-------------------------------------- 
Reading at 9848832 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/dependentlibs.list 
Header is PAX: false 
File size: 38 
Next header offset: 9849856 
-------------------------------------- 
Reading at 9849856 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/application.ini 
Header is PAX: false 
File size: 419 
Next header offset: 9850880 
-------------------------------------- 
Reading at 9850880 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/platform.ini 
Header is PAX: false 
File size: 48 
Next header offset: 9851904 
-------------------------------------- 
Reading at 9851904 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/run-mozilla.sh 
Header is PAX: false 
File size: 8915 
Next header offset: 9861632 
-------------------------------------- 
Reading at 9861632 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/removed-files 
Header is PAX: false 
File size: 707 
Next header offset: 9863168 
-------------------------------------- 
Reading at 9863168 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/dictionaries 
Header is PAX: false 
File size: 0 
Next header offset: 9863680 
-------------------------------------- 
Reading at 9863680 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/hyphenation 
Header is PAX: false 
File size: 0 
Next header offset: 9864192 
-------------------------------------- 
Reading at 9864192 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/firefox-bin 
Header is PAX: false 
File size: 0 
Next header offset: 9864704 
-------------------------------------- 
Reading at 9864704 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/PaxHeader/libxul.so 
Header is PAX: true 
File size: 116 
Next header offset: 9865728 
-------------------------------------- 
Reading at 9865728 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/libxul.so 
Header is PAX: false 
File size: 71366624 
Next header offset: 81232896 
-------------------------------------- 
Reading at 81232896 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/plugin-container 
Header is PAX: false 
File size: 454592 
Next header offset: 81688064 
-------------------------------------- 
Reading at 81688064 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/libmozgtk.so 
Header is PAX: false 
File size: 6000 
Next header offset: 81694720 
-------------------------------------- 
Reading at 81694720 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/firefox 
Header is PAX: false 
File size: 154800 
Next header offset: 81850368 
-------------------------------------- 
Reading at 81850368 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/liblgpllibs.so 
Header is PAX: false 
File size: 60272 
Next header offset: 81911296 
-------------------------------------- 
Reading at 81911296 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/webapprt-stub 
Header is PAX: false 
File size: 191792 
Next header offset: 82103808 
-------------------------------------- 
Reading at 82103808 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/gmp-clearkey/0.1/ 
Header is PAX: false 
File size: 0 
Next header offset: 82104320 
-------------------------------------- 
Reading at 82104320 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/gmp-clearkey/0.1/clearkey.info 
Header is PAX: false 
File size: 116 
Next header offset: 82105344 
-------------------------------------- 
Reading at 82105344 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/gmp-clearkey/0.1/libclearkey.so 
Header is PAX: false 
File size: 117480 
Next header offset: 82223616 
-------------------------------------- 
Reading at 82223616 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/webapprt/webapprt.ini 
Header is PAX: false 
File size: 485 
Next header offset: 82224640 
-------------------------------------- 
Reading at 82224640 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/webapprt/omni.ja 
Header is PAX: false 
File size: 75149 
Next header offset: 82300416 
-------------------------------------- 
Reading at 82300416 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/defaults/pref/ 
Header is PAX: false 
File size: 0 
Next header offset: 82300928 
-------------------------------------- 
Reading at 82300928 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/defaults/pref/channel-prefs.js 
Header is PAX: false 
File size: 245 
Next header offset: 82301952 
-------------------------------------- 
Reading at 82301952 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/icons/ 
Header is PAX: false 
File size: 0 
Next header offset: 82302464 
-------------------------------------- 
Reading at 82302464 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/ 
Header is PAX: false 
File size: 0 
Next header offset: 82302976 
-------------------------------------- 
Reading at 82302976 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/features/ 
Header is PAX: false 
File size: 0 
Next header offset: 82303488 
-------------------------------------- 
Reading at 82303488 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/components/ 
Header is PAX: false 
File size: 0 
Next header offset: 82304000 
-------------------------------------- 
Reading at 82304000 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/extensions/ 
Header is PAX: false 
File size: 0 
Next header offset: 82304512 
-------------------------------------- 
Reading at 82304512 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome.manifest 
Header is PAX: false 
File size: 40 
Next header offset: 82305536 
-------------------------------------- 
Reading at 82305536 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/PaxHeader/omni.ja 
Header is PAX: true 
File size: 88 
Next header offset: 82306560 
-------------------------------------- 
Reading at 82306560 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/omni.ja 
Header is PAX: false 
File size: 12326304 
Next header offset: 94633472 
-------------------------------------- 
Reading at 94633472 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/blocklist.xml 
Header is PAX: false 
File size: 215251 
Next header offset: 94849536 
-------------------------------------- 
Reading at 94849536 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/defaults/ 
Header is PAX: false 
File size: 0 
Next header offset: 94850048 
-------------------------------------- 
Reading at 94850048 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/defaults/preferences/ 
Header is PAX: false 
File size: 0 
Next header offset: 94850560 
-------------------------------------- 
Reading at 94850560 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/defaults/preferences/vendor.js 
Header is PAX: false 
File size: 328 
Next header offset: 94851584 
-------------------------------------- 
Reading at 94851584 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}.xpi 
Header is PAX: false 
File size: 3375 
Next header offset: 94855680 
-------------------------------------- 
Reading at 94855680 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/components/components.manifest 
Header is PAX: false 
File size: 36 
Next header offset: 94856704 
-------------------------------------- 
Reading at 94856704 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/components/libbrowsercomps.so 
Header is PAX: false 
File size: 60064 
Next header offset: 94917632 
-------------------------------------- 
Reading at 94917632 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/features/PaxHeader/loop@mozilla.org.xpi 
Header is PAX: true 
File size: 88 
Next header offset: 94918656 
-------------------------------------- 
Reading at 94918656 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/features/loop@mozilla.org.xpi 
Header is PAX: false 
File size: 1582541 
Next header offset: 96501760 
-------------------------------------- 
Reading at 96501760 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/ 
Header is PAX: false 
File size: 0 
Next header offset: 96502272 
-------------------------------------- 
Reading at 96502272 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/default/ 
Header is PAX: false 
File size: 0 
Next header offset: 96502784 
-------------------------------------- 
Reading at 96502784 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/default/default16.png 
Header is PAX: false 
File size: 829 
Next header offset: 96504320 
-------------------------------------- 
Reading at 96504320 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/default/default32.png 
Header is PAX: false 
File size: 2472 
Next header offset: 96507392 
-------------------------------------- 
Reading at 96507392 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/default/PaxHeader/default48.png 
Header is PAX: true 
File size: 88 
Next header offset: 96508416 
-------------------------------------- 
Reading at 96508416 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/default/default48.png 
Header is PAX: false 
File size: 4096 
Next header offset: 96513536 
-------------------------------------- 
Reading at 96513536 
Verifying header checksum... 
An tar error occured: Invalid Tar header checksum! 
BUILD SUCCESSFUL (total time: 0 seconds) 

Bei Byte 96513536 I encouter dies:

Nach einigen Recherchen fand ich, dass dies der PAX erweiterten Header ist. Das Problem ist, dass dieser Header nirgends angekündigt wird, bevor er erscheint.

Wie kann ich diesen Header voraussagen und entsprechend behandeln?

Dies ist die Ausgabe eines gültigen Durchlaufs meines Programms.

run: 
Reading at 0 
Verifying header checksum... 
Checksum valid. 
Found: Test1/ 
Header is PAX: false 
File size: 0 
Next header offset: 512 
-------------------------------------- 
Reading at 512 
Verifying header checksum... 
Checksum valid. 
Found: Test1/test_1 
Header is PAX: false 
File size: 0 
Next header offset: 1024 
-------------------------------------- 
Reading at 1024 
Verifying header checksum... 
Checksum valid. 
Found: Test2/ 
Header is PAX: false 
File size: 0 
Next header offset: 1536 
-------------------------------------- 
Reading at 1536 
Verifying header checksum... 
Checksum valid. 
Found: Test2/Test_2 
Header is PAX: false 
File size: 0 
Next header offset: 2048 
-------------------------------------- 
Reading at 2048 
Verifying header checksum... 
Checksum valid. 
Found: test_3 
Header is PAX: false 
File size: 0 
Next header offset: 2560 
-------------------------------------- 
Reading at 2560 
Verifying header checksum... 
Invalid checksum, Tar EOF found. 

Finnished reading, read 5 files and folders. 
This took 15ms 
BUILD SUCCESSFUL (total time: 0 seconds) 

Wie kann ich einen PAX Header voraussagen? Wie funktioniert PAX überhaupt? Was sind PaxHeader-Ordner?

Answer 1

Das Problem lag in meiner Logik für die Berechnung der nächsten Kopfzeile.

Reading at 96508416 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/default/default48.png 
Header is PAX: false 
File size: 4096 
Next header offset: 96513536 
-------------------------------------- 
Reading at 96513536 
Verifying header checksum... 
An tar error occured: Invalid Tar header checksum! 
BUILD SUCCESSFUL (total time: 0 seconds) 

Die Dateigröße beträgt 4096 Byte. Hier ist das Problem, mein Code sah originaly wie folgt aus:

private void setOffsetToNextHeader(int size) { 
     if (size == 0) { 
      offset += 512; 
     } else { 
      offset += (((size + 512)/512) + 1) * 512; 
     } 
    } 

Damit der Offset 512 Bytes zu viel gesetzt wurde, da der Algorithmus auf Abrunden der ganzen Zahl bei Division verlassen von 512.

wenn es keine rouning geschieht, wird das Ergebnis eine Zeit zu viel von 512.

Ändern Sie den obigen Code zu diesem multipliziert:

private void setOffsetToNextHeader(int size) { 
     if (size == 0) { 
      offset += 512; 
     } else if ((size % 512) == 0) { 
      offset += size + 512; 
     } else { 
      offset += (((size + 512)/512) + 1) * 512; 
     } 
    } 

die i gelöst ssue.

Dies ist die gültige Ausgabe des Programms, das ich erwartet hatte:

-------------------------------------- 
Reading at 96508416 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/chrome/icons/default/default48.png 
PAX Header prefix: false 
File size: 4096 
Next header offset: 96513024 
Extracting... 
-------------------------------------- 
Reading at 96513024 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/icons/PaxHeader/mozicon128.png 
PAX Header prefix: true 
File size: 88 
Next header offset: 96514048 
Extracting... 
-------------------------------------- 
Reading at 96514048 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/browser/icons/mozicon128.png 
PAX Header prefix: false 
File size: 17225 
Next header offset: 96531968 
Extracting... 
-------------------------------------- 
Reading at 96531968 
Verifying header checksum... 
Checksum valid. 
Found: usr/lib/firefox/gtk2/libmozgtk.so 
PAX Header prefix: false 
File size: 10096 
Next header offset: 96542720 
Extracting... 
-------------------------------------- 
Reading at 96542720 
Verifying header checksum... 
Tar EOF found. 

Finnished reading, read 109 files and folders. 
This took 94ms 
BUILD SUCCESSFUL (total time: 0 seconds)