Mobipocket Decoder Tool - Page 19

karatchov · 03-25-2009, 11:30 AM

My 2 cents:
the best way to decompress a drm-free mobipocket ebook with hufdif compression is to use any2mobi that comes with caliber.
Just install caliber, and call any2mobi from any path:
any2mobi drm-free-ebook.prc
and you will get an uncompressed drm-free-ebook.mobi

if the resulting file is too big, you can try:
any2mobi --compress drm-free-ebook.prc
it will take more time, but you will get a smaller file that you can open of fbreader

JSWolf · 03-25-2009, 11:40 AM

Quote:

Originally Posted by Marysart

Yep, i noticed that, but renaming it did not work...I'm just not good in Windows. I had a mac before this and am now using Ubuntu.
Windows frustrates the hell out of me.

If you can use Linix, there's no reason the command line should not be easy to use (IMHO).

JSWolf · 03-25-2009, 11:42 AM

Quote:

Originally Posted by karatchov

My 2 cents:
the best way to decompress a drm-free mobipocket ebook with hufdif compression is to use any2mobi that comes with caliber.
Just install caliber, and call any2mobi from any path:
any2mobi drm-free-ebook.prc
and you will get an uncompressed drm-free-ebook.mobi

if the resulting file is too big, you can try:
any2mobi --compress drm-free-ebook.prc
it will take more time, but you will get a smaller file that you can open of fbreader

Why not use mobi2oeb to expand a Mobipocket eBook?

Marysart · 03-25-2009, 11:58 AM

Quote:

Originally Posted by JSWolf

If you can use Linix, there's no reason the command line should not be easy to use (IMHO).

Well because of as per your own explanation, the automatic adding of invisible extension names for instance...If you don't now windows behaves like this it can cause a few hours of frustration. It did me.
Because like i explained, i am not really a windows user. Don't now that much about it.

The command lines in Linux and in windows aren't exactly the same, although the basic premise maybe is.

tompe · 03-25-2009, 06:35 PM

Quote:

Originally Posted by Marysart

Well because of as per your own explanation, the automatic adding of invisible extension names for instance...If you don't now windows behaves like this it can cause a few hours of frustration. It did me.
Because like i explained, i am not really a windows user. Don't now that much about it.

The command lines in Linux and in windows aren't exactly the same, although the basic premise maybe is.

As a Linux or Unix user you have to install Cygwin to get a properly working shell in Windows. Otherwise you will get hit by these differences you mention.

orwell2k · 03-26-2009, 07:45 AM

Quote:

Originally Posted by JSWolf

Why not use mobi2oeb to expand a Mobipocket eBook?

Also, why not use the Python script MobiHuff.py (v.0.03)?

JSWolf · 03-26-2009, 08:22 AM

Quote:

Originally Posted by orwell2k

Also, why not use the Python script MobiHuff.py (v.0.03)?

Because mobi2oeb works better and is actively supported so if you find a problem, you can create a ticket for it to get fixed.

Jellby · 03-31-2009, 05:25 AM

I downloaded the free sample of this dictionary. I tried opening it in FBReader and it said compression method not supported. Then I tried mobihuff.py and it said it's encrypted. Then I tried mobidedrm.py with igorsk's changes above and it said "invalid PID checksum" and created a 0-byte output file. I tried with versions 0.01, 0.02, 0.04 and 0.05 with no joy.

Is there any solution for decrypting this file? Note that it's a demo, I didn't give any PID to dowload it.

pdurrant · 03-31-2009, 05:56 AM

It sounds like it's got that strange no-pid encryption applied, so that only genuine mobipocket software can read it.

There is a way to change the decoding script to remove this encoding - it's mentioned up here somewhere. Essentially you need to use the base number in the script, unmodified by a PID.

Quote:

Originally Posted by Jellby

I downloaded the free sample of this dictionary. I tried opening it in FBReader and it said compression method not supported. Then I tried mobihuff.py and it said it's encrypted. Then I tried mobidedrm.py with igorsk's changes above and it said "invalid PID checksum" and created a 0-byte output file. I tried with versions 0.01, 0.02, 0.04 and 0.05 with no joy.

Is there any solution for decrypting this file? Note that it's a demo, I didn't give any PID to dowload it.

Jellby · 03-31-2009, 07:00 AM

Quote:

Originally Posted by pdurrant

It sounds like it's got that strange no-pid encryption applied, so that only genuine mobipocket software can read it.

There is a way to change the decoding script to remove this encoding - it's mentioned up here somewhere. Essentially you need to use the base number in the script, unmodified by a PID.

Yes, that's what I meant when I said "with igorsk's changes above". I modified the lines to read "temp_key = keyvec1" and the other one, and I did that with all the versions I mentioned, none of them worked. Did you tried it with this file?

pdurrant · 03-31-2009, 08:02 AM

OK, I just tried it. It worked fine here. With the changes to the script, you do still need to enter a PID in the command line, it just doesn't get used.

Quote:

Originally Posted by Jellby

Yes, that's what I meant when I said "with igorsk's changes above". I modified the lines to read "temp_key = keyvec1" and the other one, and I did that with all the versions I mentioned, none of them worked. Did you tried it with this file?

Jellby · 03-31-2009, 11:09 AM

Quote:

Originally Posted by pdurrant

OK, I just tried it. It worked fine here. With the changes to the script, you do still need to enter a PID in the command line, it just doesn't get used.

I must be doing something wrong then...

Just to make it clear, the changes are those in post #176? I've applied those changes to every version I have of the script and run it with:

$ python mobidedrm.py demo_DRAE.prc DRAE.prc 0000000000

(in a linux box, bash shell)
And all I get is:

MobiDeDrm v0.05. Copyright (c) 2008 The Dark Reverser
Error: invalid PID checksum

and a 0-byte DRAE.prc. So, either I'm doing something wrong, or there is something weird in my system, or I don't have the right version of mobidedrm. Could you send me yours by PM?

pilotbob · 03-31-2009, 11:10 AM

Quote:

Originally Posted by Jellby

MobiDeDrm v0.05. Copyright (c) 2008 The Dark Reverser
Error: invalid PID checksum

I think you still have to provide a valid PID. It just isn't used.

BOb

pdurrant · 03-31-2009, 11:12 AM

Yes. Or tweak the python code a little more, which is left an an exercise for the reader.

Quote:

Originally Posted by pilotbob

I think you still have to provide a valid PID. It just isn't used.

BOb

Jellby · 03-31-2009, 11:47 AM

Quote:

Originally Posted by pilotbob

I think you still have to provide a valid PID. It just isn't used.

Ah... so that's the trick... Yes, it seems to work now. I don't have my Cybook here now, so I couldn't check the PID, but I had entered it in the Fictionwise account

Now I get an error with mobihuff.py, but that's a different matter.

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03-25-2009, 11:30 AM	#271
karatchov Junior Member Posts: 7 Karma: 10 Join Date: Mar 2009 Device: none	My 2 cents: the best way to decompress a drm-free mobipocket ebook with hufdif compression is to use any2mobi that comes with caliber. Just install caliber, and call any2mobi from any path: any2mobi drm-free-ebook.prc and you will get an uncompressed drm-free-ebook.mobi if the resulting file is too big, you can try: any2mobi --compress drm-free-ebook.prc it will take more time, but you will get a smaller file that you can open of fbreader

03-31-2009, 05:25 AM	#278
Jellby frumious Bandersnatch Posts: 7,549 Karma: 19500001 Join Date: Jan 2008 Location: Spaniard in Sweden Device: Cybook Orizon, Kobo Aura	I downloaded the free sample of this dictionary. I tried opening it in FBReader and it said compression method not supported. Then I tried mobihuff.py and it said it's encrypted. Then I tried mobidedrm.py with igorsk's changes above and it said "invalid PID checksum" and created a 0-byte output file. I tried with versions 0.01, 0.02, 0.04 and 0.05 with no joy. Is there any solution for decrypting this file? Note that it's a demo, I didn't give any PID to dowload it.

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