Libguestfs - Mar 2014 - Re: Hivex3: Saving values - always string

On Wed, Mar 05, 2014 at 04:16:24PM +0100, Martin Klíma
wrote:
> Hello,
> 
> I attach example what I'm trying to do. In short I want to save
> binary values and I don't know how to encode them for hivex.
> { "key": "TEST_BINARY(ABC)", "t":
Type.BINARY, "value": "ABC" }, # How transform this to save
it as Binary value?
The question here doesn't really make any sense.  You can store
anything you want in the value field (regardless of the type, although
it's well-behaved to set it to Type.BINARY).  No transformation is
needed, just put raw data in the string.  In particular, "ABC" is
perfectly reasonable.
> { "key": "TEST_BINARY(A5)", "t": Type.BINARY,
"value": "a5" }, # How transform this to save it as Binary
value?
The same thing, but I guess perhaps you mean "how do I store the byte
0xa5 here?" in which case you can write "\xa5", using a standard
Python escape sequence:
http://docs.python.org/release/2.5.2/ref/strings.html

Basically you need to investigate what Windows is expecting in each
field (and it differs by field and by context) and generate whatever
happens to work on Windows.  Which is hard for a general-purpose
graphical registry editor, but the registry is a huge technical mess,
news at 11.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Fedora Windows cross-compiler. Compile Windows programs, test, and
build Windows installers. Over 100 libraries supported.
http://fedoraproject.org/wiki/MinGW

Thanks, now I understand :)

On 5.3.2014 17:24, Richard W.M. Jones wrote:
> On Wed, Mar 05, 2014 at 04:16:24PM +0100, Martin Klíma wrote:
>> Hello,
>>
>> I attach example what I'm trying to do. In short I want to save
>> binary values and I don't know how to encode them for hivex.
>> { "key": "TEST_BINARY(ABC)", "t":
Type.BINARY, "value": "ABC" }, # How transform this to save
it as Binary value?
> The question here doesn't really make any sense.  You can store
> anything you want in the value field (regardless of the type, although
> it's well-behaved to set it to Type.BINARY).  No transformation is
> needed, just put raw data in the string.  In particular, "ABC" is
> perfectly reasonable.
>
>> { "key": "TEST_BINARY(A5)", "t":
Type.BINARY, "value": "a5" }, # How transform this to save
it as Binary value?
> The same thing, but I guess perhaps you mean "how do I store the byte
> 0xa5 here?" in which case you can write "\xa5", using a
standard
> Python escape sequence:
> http://docs.python.org/release/2.5.2/ref/strings.html
>
> Basically you need to investigate what Windows is expecting in each
> field (and it differs by field and by context) and generate whatever
> happens to work on Windows.  Which is hard for a general-purpose
> graphical registry editor, but the registry is a huge technical mess,
> news at 11.
>
> Rich.
>