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Message from discussion Survey on Elgg's REST api
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Cash Costello  
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 More options Oct 23 2009, 8:30 am
From: Cash Costello <cash.coste...@gmail.com>
Date: Fri, 23 Oct 2009 05:30:08 -0700 (PDT)
Local: Fri, Oct 23 2009 8:30 am
Subject: Re: Survey on Elgg's REST api
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I've used php and java with the current hmac without any problems (and
I did not write it). I'm going to look into making it compatible with
OAuth: http://oauth.net/core/1.0#anchor16

I've add a simple api auth method that just requires the public key.
This is probably sufficient for using the API to integrate
applications and for a lot of external facing uses, too.

I noticed from your client that you are using more than GET and POST.
That's also something that I've kicked around but wasn't sure anyone
would use it.

On Oct 23, 7:15 am, milan <mi...@magudia.com> wrote:

> 1) Yes - I think we are, but not open sourced api's

> 2) Created elgg based web services

> 3) See 4!

> 4) We're using the HMAC signatures or to be accurate we tried to use
> them and found them to not be compatible with other tool sets and
> languages. The problem I think was that the HMAC was calculated into
> hex values and not encoded into a standard canonicalized format which
> doesn't change across toolkits.

> a) The actually format of the string to sign wasn't normalised to
> UTF-8 (not normally an issue, but can be)
> b) The hmac isn't generated using binary values (see:http://php.net/manual/en/function.hash-hmac.php)
> c) If the hmac is in binary then the output of this can be base64
> encoded into a standard strict format, which is built into nearly
> every language by default (apart from *cough* java where you need a
> external jar).

> Why do this? As other languages by default out put binary values from
> the HMAC and also the hex output is generally unpredictably different.

> I have an example client here:http://www.hedgehogs.net/mod/studios/client/php/

> We also did away with doing different Hashes for POST and GET.
> Basically we had a look at the Amz S3 model and then overloaded the
> current API - I think.

> As for 5) and 6), i'll ask Sammy as he done more API work than I have!

> Milan

> On Oct 22, 2:40 pm, Cash Costello <cash.coste...@gmail.com> wrote:

> > Hi, Antoine

> > If you're just starting out, I recommend grabbing the latest REST api
> > from svn because it has a lot of bug fixes. The files you need are:

> > /engine/lib/api.php
> > /engine/lib/pam.php
> > /engine/lib/xml.php
> > /languages/en.php (error messages)
> > /services/api/rest.php

> > Note that api.php has a hook into Elgg's new unit testing framework
> > but you won't be able to use that without grabbing more files from
> > svn. Also, currently the schema in SVN has a bug which breaks the
> > activity river.

> > Cash

> > On Oct 22, 5:49 am, Ant- <antoine.raba...@gmail.com> wrote:

> > > Hi Cash and everybody.
> > > to answer your survey:

> > > 1) No but it's a project

> > > 2) iPhone and adroid application

> > > 3) not yet but I will implement it

> > > 4) just setting that up right now :)


 
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