Thread: What's! .DAT?
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Old 23-01-02, 03:57 PM   #11
indiana_jones
B2B Protagonist ... Life is ... Bubble to Bubble ... Beer to Beer ... love a VLAIBB (Very Lonesome Artificial Intelligence Brained Bubble) @ http://www.geocities.com/vlaibb vlaibb@yahoo.com
 
Join Date: Jan 2002
Posts: 206
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.dbb files:
for each file, imported into "My Media", a record is added to one of the .dbb files.
It contains filenames, all the info extracted from media files and -
whats really important - a long signature, which is calculated from the file.
I think, the signature together with the file size is the main parameter for
identifying files - all other things are only used for searching for files.

.dat files
as all others already stated, these are waiting downloads.
at the end of the file is the search information, containing also the findings
and of cource the signature and filesize.
it may also contain some pointers for ongoing downloads

this part is protected by a 4 Byte checksum, which has to be updated accordingly.
unfortunately this part contains a 16 bit pointer on a large array, which can overrun
after a while, then the checksum cannot be computed correctly anymore.
(there was a post from AYB at the Morpheus forum, who had made a repair tool)

Since in case the checksum processing goes wrong, when you start Morpheus, the
file is brutally deleted.

but if you lucky and the download finished, this info part is ripped of and the file
is renamed to its final name.
(maybe it's copied, then it will use temporary double the space, which can be much
if it's a movie - anybody knows?)

that's it - at least a part of it

indy

want to know more?
then please talk an english which's also understood in the far Alps!
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