As to the floats (I figure those are the values tagged as "number"): I just tried it on a big-endian machine (Solaris/sparc, flashplayer 9.0.47.0), in addition to little-endian Linux/x86.  The results:

• Flashplayer apparently stores its cookies in the same format, independently of the architecture the player is running on¹ (which confirms what GrandFather wrote).  I.e., a hexdump of the buffer (unpack "H*", $buffer) in your _readFloat routine consistently shows the same pattern, e.g. 4049000000000000 for 50.0 (as found in the settings.sol file, which is being created by default the first time the player is started).

• It seems you can properly decode those values using

  unpack 'd', $buffer;           # big-endian (e.g. sparc, PA-RISC)
                                 # i.e. 'perl -V' showing "byteorder=432
  +1"
  
  unpack 'd', reverse $buffer;   # little-endian (e.g. x86)
                                 # i.e. 'perl -V' showing "byteorder=123
  +4"
  [download]

However, I so far haven't been able to test this with "more complex" floats, i.e. not just simple ints (like 50) represented as floats — mainly because I couldn't find a site which would set such a value... but I suppose it would work. (Do you have a link to a site which will make my flashplayer store numbers such as 726.127318273?)

___

¹  Adobe++ for this, BTW — as it does allow you to share your home directory (~/.macromedia/) across multiple architectures.  (Early versions of Firefox got this wrong, for example, storing architecture-dependent stuff in your profile, which made the browser segfault when you switched from one platform to another... (now fixed) )

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