I have problem with openning a DRMed epub in calibre #2451
Description
I'm using HP ProBook 650 G2, all of the necessary parts of my laptop has an open source drive (except some irrelevant ones like fingerprint reader)
I downloaded the book from a Persian e-book platform named "ketabrah": https://ketabrah.com
I get this message in debug mode:
ApplicationPaletteChange event ignored
Using calibre Qt style: True
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-close-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-minimize-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-maximize-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-restore-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-close-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-minimize-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-maximize-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-restore-symbolic.svg"
calibre Debug log
calibre 8.8 embedded-python: False
Linux-6.17.0-14-generic-x86_64-with-glibc2.42 Linux ('64bit', 'ELF')
('Linux', '6.17.0-14-generic', '#14-Ubuntu SMP PREEMPT_DYNAMIC Fri Jan 9 17:01:16 UTC 2026')
Python 3.13.7
Interface language: None
EXE path: /usr/bin/python3.13
Successfully initialized third party plugins: DeDRM (7, 2, 1)
calibre 8.8 embedded-python: False
Linux-6.17.0-14-generic-x86_64-with-glibc2.42 Linux ('64bit', 'ELF')
('Linux', '6.17.0-14-generic', '#14-Ubuntu SMP PREEMPT_DYNAMIC Fri Jan 9 17:01:16 UTC 2026')
Python 3.13.7
Interface language: None
EXE path: /usr/bin/python3.13
Successfully initialized third party plugins: DeDRM (7, 2, 1)
QPA platform: wayland
devicePixelRatio: 2.0
logicalDpi: 96.0 x 96.0
physicalDpi: 114.74823529411763 x 115.50315789473683
[0.00] Starting up...
[0.02] Showing splash screen...
[1.14] splash screen shown
[1.14] Initializing db...
[1.23] db initialized
[1.23] Constructing main UI...
Loaded cached store plugin for: Amazon ES Kindle at version: 16
Loaded cached store plugin for: Amazon FR Kindle at version: 17
Loaded cached store plugin for: Amazon IT Kindle at version: 17
Loaded cached store plugin for: Baen Ebooks at version: 3
Loaded cached store plugin for: Beam EBooks DE at version: 5
Loaded cached store plugin for: Библио.бг at version: 3
Loaded cached store plugin for: Barnes and Noble at version: 5
Loaded cached store plugin for: Bubok Portugal at version: 3
Loaded cached store plugin for: Bubok Spain at version: 3
Loaded cached store plugin for: Моята библиотека at version: 3
Loaded cached store plugin for: eBook.nl at version: 3
Loaded cached store plugin for: Ebookpoint at version: 10
Loaded cached store plugin for: eBooks.com at version: 6
Loaded cached store plugin for: Empik at version: 11
Loaded cached store plugin for: Project Gutenberg at version: 9
Loaded cached store plugin for: Kobo at version: 16
Loaded cached store plugin for: Legimi at version: 13
Loaded cached store plugin for: ebook.de at version: 9
Loaded cached store plugin for: Nexto at version: 8
Loaded cached store plugin for: Publio at version: 10
Loaded cached store plugin for: RW2010 at version: 2
Loaded cached store plugin for: Smashwords at version: 7
Loaded cached store plugin for: Świat Ebooków at version: 3
Loaded cached store plugin for: Virtualo at version: 13
Loaded cached store plugin for: Weightless Books at version: 2
Loaded cached store plugin for: Woblink at version: 16
Loaded cached store plugin for: Wolne Lektury at version: 5
[2.10] GUI main window shown
[2.17] main UI initialized...
[2.17] Hiding splash screen
[2.17] splash screen hidden
[2.17] Started up in 2.17 seconds with 0 books
qt.qpa.wayland.textinput: virtual void QtWaylandClient::QWaylandTextInputv3::disableSurface(wl_surface*) Try to disable surface 0x32715580 with focusing surface 0x32767020
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-close-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-minimize-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-maximize-symbolic.svg"
qt.qpa.qwaylandadwaitadecoration: Failed to find an svg icon for "window-restore-symbolic.svg"
qt.qpa.wayland.textinput: virtual void QtWaylandClient::QWaylandTextInputv3::disableSurface(wl_surface*) Try to disable surface 0x322d01d0 with focusing surface 0x326353d0
DeDRM v7.2.1: Trying to decrypt atomichabits-nashre-negahe-ashna.epub
DeDRM v7.2.1: Verifying zip archive integrity
DeDRM v7.2.1: Error 'File is not a zip file' when checking zip archive
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre_plugins.dedrm.__init__", line 210, in ePubDecrypt
fr = zipfix.fixZip(path_to_ebook, inf.name)
File "calibre_plugins.dedrm.zipfix", line 53, in __init__
self.inzip = zipfilerugged.ZipFile(zinput,'r')
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
File "/tmp/calibre-zjk_5c4v/q0vltzrjplugin_unzip/zipfilerugged.py", line 683, in __init__
self._GetContents()
~~~~~~~~~~~~~~~~~^^
File "/tmp/calibre-zjk_5c4v/q0vltzrjplugin_unzip/zipfilerugged.py", line 709, in _GetContents
self._RealGetContents()
~~~~~~~~~~~~~~~~~~~~~^^
File "/tmp/calibre-zjk_5c4v/q0vltzrjplugin_unzip/zipfilerugged.py", line 721, in _RealGetContents
raise BadZipfile("File is not a zip file")
zipfilerugged.BadZipfile: File is not a zip file
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/calibre/calibre/customize/ui.py", line 214, in _run_filetype_plugins
nfp = plugin.run(nfp) or nfp
~~~~~~~~~~^^^^^
File "calibre_plugins.dedrm.__init__", line 644, in run
decrypted_ebook = self.ePubDecrypt(path_to_ebook)
File "calibre_plugins.dedrm.__init__", line 214, in ePubDecrypt
raise Exception(e)
Exception: File is not a zip file
Traceback (most recent call last):
File "/usr/lib/calibre/calibre/ebooks/metadata/epub.py", line 180, in get_zip_reader
zf = ZipFile(stream, mode='r')
File "/usr/lib/calibre/calibre/utils/zipfile.py", line 813, in __init__
self._GetContents()
~~~~~~~~~~~~~~~~~^^
File "/usr/lib/calibre/calibre/utils/zipfile.py", line 848, in _GetContents
self._RealGetContents()
~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/calibre/calibre/utils/zipfile.py", line 863, in _RealGetContents
raise BadZipfile('File is not a zip file')
calibre.utils.zipfile.BadZipfile: File is not a zip file
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/calibre/calibre/customize/ui.py", line 496, in get_file_type_metadata
mi = plugin.get_metadata(stream, ftype.lower().strip())
File "/usr/lib/calibre/calibre/customize/builtins.py", line 177, in get_metadata
return get_metadata(stream, ftype=ftype)
File "/usr/lib/calibre/calibre/ebooks/metadata/epub.py", line 264, in get_metadata
reader = get_zip_reader(stream)
File "/usr/lib/calibre/calibre/ebooks/metadata/epub.py", line 183, in get_zip_reader
zf = LocalZipFile(stream)
File "/usr/lib/calibre/calibre/utils/localunzip.py", line 265, in __init__
_extractall(stream, file_info=self.file_info)
~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/calibre/calibre/utils/localunzip.py", line 241, in _extractall
raise ValueError('Not a ZIP file')
ValueError: Not a ZIP file
Added atomichabits-nashre-negahe-ashna to db in: 0.8
Added 1 books in 1.9 seconds
[32.30] Shutdown starting...
[34.65] Shutdown complete, quitting...
qt.qpa.wayland.textinput: virtual void QtWaylandClient::QWaylandTextInputv3::zwp_text_input_v3_leave(wl_surface*) Got leave event for surface 0x0 with focusing surface 0x322d01d0
qt.qpa.wayland.textinput: virtual void QtWaylandClient::QWaylandTextInputv3::disableSurface(wl_surface*) Try to disable surface 0x0 with focusing surface 0x322d01d0