A Few Interesting 40D FW Strings? - General Discussion and Assistance - CHDK Forum
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A Few Interesting 40D FW Strings?

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ASalina

A Few Interesting 40D FW Strings?
« on: 22 / April / 2008, 02:10:00 »
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I've been examining the 40D 1.0.5 FW in IDA and came across some interesting strings. I wonder if these have to do with VxWorks internals or if they are related to the camera.

"[DM] dmGetLogName: opendir A:\n"
"[DM] ERROR: dmGetLogName: opendir B:\n"
".LOG"
".log"
"%s/log%03d.log"

So I created a file called "log001.log" in the root directory of the CF card. Nothing special happened when I powered up the camera. The file was not written to.

Later on in the strings I found:
"\n [%s]"
"\n [quit]"
"quit"
"help"
"\n%s>"
"CmdShell"

Do any of these look familiar from dumps of other VxWorks-based cameras?
Could there be a command shell in the FW accessible to service persons?
Should I bother to chase these strings down?
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Offline DataGhost

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Re: A Few Interesting 40D FW Strings?
« Reply #1 on: 22 / April / 2008, 02:30:19 »
Strings aren't necessarily used. I've seen cases where 'log files' are merely default filenames when certain functions are called with no (or improper) arguments.
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ASalina

Re: A Few Interesting 40D FW Strings?
« Reply #2 on: 22 / April / 2008, 12:58:50 »
Yes, and the strings that look like commands ("help" "quit") could possibly be for FTP access via the WFT-E3A wireless accessory.
I haven't found any other FTP commands yet, though.
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