Re: [PATCH/RFC] contrib: add win32 credential-helper

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On Mon, Apr 2, 2012 at 5:53 PM, Erik Faye-Lund <kusmabite@xxxxxxxxx> wrote:
> On Fri, Mar 23, 2012 at 10:10 PM, Jeff King <peff@xxxxxxxx> wrote:
>> On Tue, Mar 20, 2012 at 12:06:54AM +0100, Erik Faye-Lund wrote:
>>
>>> This one pretty much sucks. Mem-leaks and a sketchy deletion-filter.
>>
>> Thanks for moving forward on this. I'm sorry I can't be much help on the
>> Windows-specific knowledge, but I'll answer what I can.
>>
>
> Thanks for following up :)
>
>>> Currently uses "::" as an attribute-separator, but this is not robust
>>> without encoding if the attribute values themselves contains "::".
>>
>> Yeah. Can you store arbitrary bytes? If so, NUL would be a good
>> terminator.
>
> No. TargetName is an LPWSTR, which is supposed to be zero-terminated.
> There's no way of specifying it's length directly.
>
>> Otherwise, newline is a reasonable choice, as the protocol
>> already can't communicate usernames/passwords with newlines (a
>> limitation that I accepted to make the protocol much simpler for
>> scripting use).
>>
>
> This works, but it causes Windows 7's credential manager to glitch in
> rendering the credential (adding all the newlines to the end of the
> line, and stretching an icon - yuck), which is also a bit unfortunate.
>
> So I'm thinking that escaping the string needs to be done. It can't be
> that big of a deal ;)
>

Hmm, but I must have been a complete moron; the credential structure
in windows has a general purpose credential-attribute system, where I
can store the meta-data I want.

So I can probably use that and get away without any sort of encoding. Yay.

I'll look deeper into it when I find the time.
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