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Wondering if anyone else out there could help me with a pet project. Been looking to really understand the inner workings of the iPhone sms.db (and maybe, possibly, recreate YouArchive.It...
03-29-2011, 02:34 PM #1SMS.db and MMS Messages
Wondering if anyone else out there could help me with a pet project.
Been looking to really understand the inner workings of the iPhone sms.db (and maybe, possibly, recreate YouArchive.It in the process) and I've come across something that has been stumping me in how the DB handles MMS messages.
There are 3 parts responsible for an MMS message:
1)message table: ROWID pointer to the MMS message
2)msg_parts table: the components of the MMS message with a file name
3)~/Library/SMS/Parts/: the actual holding pen for the MMS files.
The msg_parts table contains the text of the message as well as the original file name of the MMS attachment, but on the phone the attachment is named after the message table's ROWID and msg_part ID (ex. 1537-0.jpg, 254-1.gif...).
My problem is that the attachemnt files are stored under subdirectories of subdirectories of Parts/ (ex. parts/00/05/46773-0.jpg). No where in message or msg_parts does it indicate the path back to the image and I'm wondering how the Parts/XX/YY is derived.
Any pointers are appreciated. Thx.
06-04-2011, 11:15 AM #2
Did you eventually work out what XX/YY mean?
I'm trying to do the same thing as you!
I just know what XX means: it's message's group_id in hex. But I still can't understand where YY comes from: looks like it's an incremental number, to me, but I don't know where it's stored.
Maybe we could share our findings and improve our work?
By the way, this was my post, added just a few hours ago:
sms.db and MMS messages: a question
I used to be a sort of "expert" of sms.db, as I was the lead developer of a well-known iPhone application between 2007 and 2009.
We probably found out everything possible about sms.db on 1.0.x, 1.1.x, 2.x and 3.x... But we never worked with MMS messages in the past.
Last edited by TheOtherMe; 06-04-2011 at 11:19 AM.
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