Add information about Chrome Cache file format version 3

[nickbail3y]

No description provided.

[joachimmetz]

Thx for the heads up, feel free to provide information/changes to handle the new format(s)

[nickbail3y]

Hi Joachim,

I took a quick look at the cache structure and here's what I found.

Overall directory structure appears to be something like this:
[directory] cache_folder
-- <16 char hexadecimal_string>_0 (binary data)
-- <16 char hexadecimal string>_0 (binary data)
...
-- index (binary file)
-- [directory] index-dir
---- the-real-index (binary data)

Each file in the overall directory, including both index files start with the following 64bit word:
305c 72a7 1b6d fbfc

I believe the file format is little-endian, but I could be mistaken.

A hex dump of some files indicates that the rest of the file contains pretty much the same information as specified in your documentation, namely: filename and contents, HTTP response headers, and some other miscellaneous data.

Hope this is helpful to you.

Nick

[joachimmetz]

http://www.chromium.org/developers/design-documents/network-stack/disk-cache/disk-cache-v3

[kynan]

Documentation of the "SimpleFile" format