[Libreoffice-bugs] [Bug 125216] FILEOPEN DOC file with extension .dot gives error "Read Error - This is not a valid WinWord6 File"

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=125216

Julien Nabet <serval2412 at yahoo.fr> changed:

           What    |Removed                     |Added
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                 CC|                            |serval2412 at yahoo.fr

--- Comment #15 from Julien Nabet <serval2412 at yahoo.fr> ---
Indeed, in Roman's file, we can see:
000047D8   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  00
00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  EC A5 01 01  
00004804   4D 20 09 04  00 00 F0 12  BF 00 00 00  00 00 00 30  00 00 00 00  00
08 00 00  70 09 00 00  0E 00 43 61  6F 6C 61 6E  38 30 00 00  00 00 00 00 

So F0 again (so fDot = 0)
I wonder how these files have been generated. If they were created from
MSOffice without extension renaming, it would mean Microsoft doesn't even
respect his proper specs (knowing that dot file is quite an old format) (or did
I miss something?)
Anyway, IMHO Tor's patch is correct and shouldn't be reverted.

Perhaps to workaround this, perhaps should we test extension (with case
unsensitive) after:
bIsDetected = ((aBits1 & 0x01) == 0x01);
(see
https://opengrok.libreoffice.org/xref/core/sw/source/ui/uno/swdetect.cxx?r=eaeabd78#117)
in case bIsDetected is false ?
(of course it would be ugly too)

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