[File] [PATCH] Magdir/ole2compounddocs CorelCAD Drawing *.ccd only described generic
Christos Zoulas
christos at zoulas.com
Mon Apr 17 16:36:37 UTC 2023
Committed, thanks!
christos
> On Apr 13, 2023, at 11:53 AM, Jörg Jenderek <joerg.jen.der.ek at gmx.net> wrote:
>
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>
> Hello,
>
> some weeks ago i send patch of Magdir/windows for "CloneCD CD-image
> Description", which is accepted and now included inside newest
> Magdir. The used extension is 3 byte suffix ccd. Unfortunately this
> extension is also used for other file formats like CorelCAD Drawing.
>
> When running file command version 5.44 with -e cdf option on such
> 48 samples and related files i get an output like:
>
> 3DUSENG.CCT: OLE 2 Compound Document, v3.62, SecID 0x2,
> Mini FAT start sector 0x5 :
> UNKNOWN, clsid
> 0x20f414de1cacce11be26db67235e2689
> {DE14F420-AC1C-11CE-BE26-DB67235E2689}
> with names
> Contents ViewInfo CustomViewDescriptions
> \377\377\3 \377\377\3 \377\377\3
> DOG.CCD: OLE 2 Compound Document, v3.62, SecID 0,
> 12 FAT sectors, Mini FAT start sector 0x2d1 :
> UNKNOWN, clsid
> 0x20f414de1cacce11be26db67235e2689
> {DE14F420-AC1C-11CE-BE26-DB67235E2689}
> with names
> Contents ViewInfo CustomViewDescriptions
> \323 \377\377\3 \377\377\3
> DOGFVIEW.CCD: OLE 2 Compound Document, v3.62, SecID 0x1,
> 0 Mini FAT sector : UNKNOWN with names
> TRUCK.CCD: OLE 2 Compound Document, v3.62, SecID 0x2,
> 22 FAT sectors, Mini FAT start sector 0x4 :
> UNKNOWN, clsid
> 0x20f414de1cacce11be26db67235e2689
> {DE14F420-AC1C-11CE-BE26-DB67235E2689}
> with names
> Contents LayerInfo ViewInfo
> \377\377\3 ! A
> USENGTUT.CCT: OLE 2 Compound Document, v3.62, SecID 0x2,
> Mini FAT start sector 0x5 :
> UNKNOWN, clsid
> 0x20f414de1cacce11be26db67235e2689
> {DE14F420-AC1C-11CE-BE26-DB67235E2689}
> with names
> Contents ViewInfo CustomViewDescriptions
> \377\377\3 \377\377\3 \377\377\3
>
> When running file command version 5.44 with -e soft option on such
> samples and related files i get an output like:
>
> 3DUSENG.CCT: Composite Document File V2 Document, Little Endian,
> Os: Windows, Version 4.0, Code page: 1252,
> Revision Number: 10, Total Editing Time: 48:12,
> Last Saved Time/Date: Tue Mar 26 18:43:06 1996,
> Create Time/Date: Fri Mar 22 19:52:18 1996,
> Number of Pages: 0, Number of Words: 0,
> Number of Characters: 0,
> Name of Creating Application: CorelCAD, Security: 0
> DOG.CCD: Composite Document File V2 Document, Little Endian,
> Os: Windows, Version 4.0, Code page: 1252,
> Revision Number: 2, Total Editing Time: 43:55,
> Last Saved Time/Date: Wed Oct 16 18:16:17 1996,
> Create Time/Date: Tue Apr 9 22:48:04 1996,
> Number of Pages: 0, Number of Words: 0,
> Number of Characters: 0,
> Name of Creating Application: CorelCAD, Security: 0
> DOGFVIEW.CCD: Composite Document File V2 Document,
> Cannot read section info
> TRUCK.CCD: Composite Document File V2 Document, Little Endian,
> Os: Windows, Version 4.0, Code page: 1252,
> Revision Number: 5, Total Editing Time: 18:18:18,
> Last Saved Time/Date: Wed Oct 16 16:39:04 1996,
> Create Time/Date: Thu Mar 28 19:56:54 1996,
> Number of Pages: 0, Number of Words: 0,
> Number of Characters: 0,
> Name of Creating Application: CorelCAD, Security: 0
> USENGTUT.CCT: Composite Document File V2 Document, Little Endian,
> Os: Windows, Version 4.0, Code page: 1252,
> Keywords: Tutorial, Comments:
> Use this template for the CorelCAD Tutorial when
> asked to use the US Engineering template.,
> Revision Number: 10, Total Editing Time: 48:12,
> Last Saved Time/Date: Tue Mar 26 18:43:06 1996,
> Create Time/Date: Fri Mar 22 19:52:18 1996,
> Number of Pages: 0, Number of Words: 0,
> Number of Characters: 0,
> Name of Creating Application: CorelCAD, Security: 0
>
> Furthermore with -i option only generic application/x-ole-storage or
> wrong application/vnd.ms-office is shown. With --extension option
> only 3 byte sequence ??? is shown.
>
> For comparison reason i run the file format identification utility
> TrID ( See https://mark0.net/soft-trid-e.html). This identifies also
> all examples with low priority as "Generic OLE2 / Multistream
> Compound" by docfile.trid.xml. All CCD examples except DOGFVIEW.CCD
> are described as "CorelCAD Drawing" by ccd-corelcad.trid.xml (See
> appended trid-v-ccd.txt.gz).
>
> For comparison reason i also run the file format identification
> utility DROID ( See https://sourceforge.net/projects/droid/). This
> identifies all examples generic as "OLE2 Compound Document Format" by
> PUID fmt/111.
>
> With the help of TrID tool i also found a page about CorelCAD on file
> formats archive team web site and on Wikipedia. That informations
> are expressed by comment lines inside Magdir/ole2compounddocs like:
> # URL: http://fileformats.archiveteam.org/wiki/CorelCAD
> # https://en.wikipedia.org/wiki/CorelCAD
> # Reference: http://mark0.net/download/triddefs_xml.7z/
> # defs/c/ccd-corelcad.trid.xml
> There also a link to download CorelCAD 30-Day Trial Disc with such
> samples is listed.
>
> The drawing are recognized as "OLE 2 Compound Document"
> by starting bytes (\320\317\021\340\241\261\032\341) at the beginning
> inside Magdir/ole2compounddocs. Obviously there exist no code
> fragment to do sub class identification. So the examples are
> described as "UNKNOWN". Luckily nearly all examples except
> DOGFVIEW.CCD have a Root storage object CLSID. In that case file
> command display afterwords this information by a phrase
> like 0x20f414de1cacce11be26db67235e2689 or in curly braces format
> {DE14F420-AC1C-11CE-BE26-DB67235E2689}.
>
> That means that in branch handling CLSID code must be added. Luckily
> file command print also some directory entry names. In this
> examples this are words like Contents, ViewInfo,
> CustomViewDescriptions and
> LayerInfo encoded as UTF-16. These characteristics are also found in
> global string section inside TrID definition by lines like:
> <String>C'U'S'T'O'M'V'I'E'W'D'E'S'C'R'I'P'T'I'O'N'S</String>
> <String>L'A'Y'E'R'I'N'F'O</String>
> <String>C'O'N'T'E'N'T'S</String>
> <String>V'I'E'W'I'N'F'O</String>
>
> The last entry related to Corel was WordPerfect 9 Graphic. So i add
> afterwards and before StarOffice StarWriter 3.0 document section
> lines for my inspected examples. That looks like:
>>> 88 ubequad 0xbe26db67235e2689 : Corel
>>>> 80 ubequad 0x20f414de1cacce11 \bCAD Drawing or Template
> !:mime application/x-corel-cad
> !:ext ccd/cct
>
> I found no official or often used mime type. So i display an user
> defined one. The extension CCD is used for CorelCAD Drawing whereas
> the CCT suffix is used for CorelCAD Drawing templates.
>
> After applying the above mentioned modifications by patch
> file-5.44-ole2compounddocs-ccd.diff then all nearly all of my
> inspected CorelCAD Drawing and templates are now described with more
> details. This now looks with -e cdf option like:
>
> 3DUSENG.CCT: OLE 2 Compound Document, v3.62, SecID 0x2,
> Mini FAT start sector 0x5 :
> CorelCAD Drawing or Template
> DOG.CCD: OLE 2 Compound Document, v3.62, SecID 0,
> 12 FAT sectors, Mini FAT start sector 0x2d1 :
> CorelCAD Drawing or Template
> DOGFVIEW.CCD: OLE 2 Compound Document, v3.62, SecID 0x1,
> 0 Mini FAT sector : UNKNOWN with names
> TRUCK.CCD: OLE 2 Compound Document, v3.62, SecID 0x2,
> 22 FAT sectors, Mini FAT start sector 0x4 :
> CorelCAD Drawing or Template
> USENGTUT.CCT: OLE 2 Compound Document, v3.62, SecID 0x2,
> Mini FAT start sector 0x5 :
> CorelCAD Drawing or Template
>
> With -e cdf and --extension option this now looks like:
> 3DUSENG.CCT: ccd/cct
> DOG.CCD: ccd/cct
> DOGFVIEW.CCD: ???
> TRUCK.CCD: ccd/cct
> USENGTUT.CCT: ccd/cct
>
> I hope my diff file can be applied in future version of file
> utility. So unfortunately no ways are described and found by myself
> to distinguish templates (*.cct) from pure CorelCAD Drawing (*.ccd).
>
> I hope my diff file can be applied in future version of file utility.
>
> With best wishes
> Jörg Jenderek
> - --
> Jörg Jenderek
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> Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/
>
> iF0EARECAB0WIQS5/qNWKD4ASGOJGL+v8rHJQhrU1gUCZDglkQAKCRCv8rHJQhrU
> 1iOHAKDMwdd40trwAZczk8+jEyNpLFAnAwCgw6XJrEBDQGqp6fH+UzCFEGKtyTU=
> =9pqz
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> <trid-v-ccd.txt.gz><file-5_44-ole2compounddocs-ccd_diff.DEFANGED-2><file-5_44-ole2compounddocs-ccd_diff_sig.DEFANGED-3>--
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