https://bugs.documentfoundation.org/show_bug.cgi?id=118922

            Bug ID: 118922
           Summary: 6 page Password protected Writer file takes 2 minutes
                    to open and/or save, Open Office is instant
           Product: LibreOffice
           Version: 5.4.3.2 release
          Hardware: x86-64 (AMD64)
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs@lists.freedesktop.org
          Reporter: cr...@arno.com

Description:
I have a 6 page "Will" document, did some experimenting to see what
works/doesn't since my busted up password protected document -only- takes 2
minutes to open:

1. [works] OpenOffice 4.1.3 (Windows) Opens the 6 page document almost
instantly.

2. [works] Using OpenOffice 4.1.3 to do a "SaveAs..." to a new filename, with
same or new password, creates a document which LibreOffice x64 (5.x, 6.x) will
open quickly. (Yes, this is a "recovery tactic")

3. [doesn't] Waiting for LibreOffice to open the offending document and then
using LibreOffice to perform a "SaveAs..." just makes another "broken file" and
takes twice as long to do as opening the "broken file", 1x to SaveAs... + 1x to
get LibreOffice "unhung" so it will close.  Behavior under Ubuntu 16.04 LTS and
Windows 10 x64 is the same. soffice.bin uses 100% of 1-CPU while performing
it's shenanigans.  Under Windows 10 x64 it just says LibreOffice "Not
responding" until the file actually opens ~ 2minutes later.

Windows LibreOffice v5.4.3.2 x64, and 6.0.5 x64
Ubuntu 16.04 LTS x64 v5.1.6.2

Observations:
a) The META-INF/Manifest.xml produced by #2 above is quite different from the
original file with all the problems.  This different META-INF/Manifest.xml
seems to work well with LibreOffice 5.x/6.x x64 on both Linux and Windows
Platforms.

b) The META-INF/Manifest.xml produced by #3 matches the original file which
causes all the problems on opening.

c) My file having all the problems was created using LibreOffice and is
timestamped 27-Aug-2016.  I tend to keep LibreOffice up to date so it was
produced using a "current version" around that date.

d) It's -really- nice to have an OpenDocument -STANDARD- for ODT type files so
other tools can be used for just such occasions.  Who knows, maybe next time
OpenOffice will be the one experiencing problems.  At least we have choices
about what to try.

The OpenOffice site, in case you forgotten, is http://www.openoffice.org/
This should help you recover your documents so you can continue to use
LibreOffice.

Actual Results:
Document hangs LibreOffice for 2 minutes on Linux and Windows 10.  On both
systems the Window and task become unresponsive for 2 minutes.

Expected Results:
Like OpenOffice 4.1.3, I expect a document of this complexity to open in about
1 second.AOO413m1(Build:9783) - Rev. 1761381


Reproducible: Always


User Profile Reset: No



Additional Info:
Since this is a financial document containing account names and passwords with
occasional bitmap images, it can't be posted here.  A first crack at
"sanitizing" this document made the problem go away.

Instead, I'll post the META-INF/manifest.xml from the file which doesn't work
and the one that does, since this difference is noted and is significant.

Since I'm also posting a way to recover the file with this condition, I hope
this will do.

OpenGL doesn't appear to be used, LibreOffice is calling it OpenCL.  Allowing
the use of "OpenCL" doesn't make any difference.

Version: 5.1.6.2
Build ID: 1:5.1.6~rc2-0ubuntu1~xenial3
CPU Threads: 8; OS Version: Linux 4.4; UI Render: default; 
Locale: en-US (en_US.UTF-8); Calc: group

Version: 5.4.3.2 (x64)
Build ID: 92a7159f7e4af62137622921e809f8546db437e5
CPU threads: 4; OS: Windows 6.19; UI render: default; 
Locale: en-US (en_US); Calc: group
https://gerrit.libreoffice.org/gitweb?p=core.git&a=log&h=92a7159f7e4af62137622921e809f8546db437e5

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