https://bugs.kde.org/show_bug.cgi?id=406135
Bug ID: 406135
Summary: libzipplugin: CRC checksums of files not shown when
the first entry in ZIP is a directory
Product: ark
Version: 18.12.3
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: plugins
Assignee: rthoms...@gmail.com
Reporter: c822c4f23bca1ea6faac7...@mail.xn--3ds443g
CC: elvis.angelac...@kde.org
Target Milestone: ---
Created attachment 119207
--> https://bugs.kde.org/attachment.cgi?id=119207&action=edit
Files for reproducing the bug
SUMMARY
When a ZIP file contains directory(ies) and file(s), and the first entry in a
ZIP file is a directory, Ark will not show the CRC checksums of the file(s).
STEPS TO REPRODUCE
1. Create a directory and some files, and place some files into the directory.
2. Check the first entry of the ZIP file and see if it is a directory by
running `ziptool test_3.zip stat 0`.
3. Open the ZIP file using Ark.
A tar file containing 3 ZIP files has been attached. test_3.zip can be used to
reproduce the bug.
test_1.zip is created by `zip -r test_1.zip a 1.txt`.
test_2.zip is created by `zip --no-dir-entries -r test_2.zip a b`.
test_3.zip is created by `zip -r test_3.zip a b random_text.txt`.
OBSERVED RESULT
For test_1.zip, since the first entry is `1.txt`, the CRC checksums of all
files are displayed correctly.
For test_2.zip, all files are stored inside the directories, but since
`--no-dir-entries` is used (not creating entries for directories), the CRC
checksums of all files are displayed correctly.
For test_3.zip, the first entry is `a/` (directory), and the CRC checksums of
`2.txt`, `3.txt` and `random_text.txt` are not shown.
EXPECTED RESULT
For test_3.zip, Ark should show the CRC checksums of `2.txt`, `3.txt` and
`random_text.txt`.
ADDITIONAL INFORMATION
If I change lines 305 to 307 of `plugins/libzipplugin/libzipplugin.cpp` and
remove the condition `if (!e->isDir())`, then the problem can be partially
fixed - Ark will show CRC "0" for directories and CRC checksums for the files
(such as "DB410B7F" for `a/2.txt`) when opening test_3.zip.
When opening RAR files, there is no similar bug, and Ark will show CRC
"00000000" for directories.
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