events/2013-09-15-pdx-indieauth-openid-hackathon

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2013-09-15-pdx-indieauth-openid-hackathon.jpg


Terminology

  • OP - an "OpenID Provider," in this case, IndieAuth.com
  • RP - a "Relying Party," the site that is requesting identification.
  • XRDS - an XML document provided by the OP describing the capabilities and resources available on the RP. OpenID 1.1.
  • Yadis - the discovery protocol for discovering OpenID 1.1 IDs.


Goal

If you are using myopenid.net as your openid delegate, be able to replace that with indieauth.com.

You probably have something like this markup if your'e delegating to myopenid.net:

 <link rel="openid.server"
       href="http://www.myopenid.com/server" />
 <link rel="openid.delegate"
       href="http://youraccount.myopenid.com/" />
 <link rel="openid2.local_id"
       href="http://youraccount.myopenid.com" />
 <link rel="openid2.provider"
       href="http://www.myopenid.com/server" />
 <meta http-equiv="X-XRDS-Location"
       content="http://www.myopenid.com/xrds?username=youraccount.myopenid.com" />

(from https://www.myopenid.com/help#own_domain)

Using IndieAuth as an OpenID delegate

Should be able to delegate to indieauth.com with tags like:

 <link rel="openid.server"
       href="https://indieauth.com/openid" />
 <link rel="openid.delegate"
       href="http://aaronparecki.com/" />
 <link rel="openid2.local_id"
       href="http://aaronparecki.com/" />
 <link rel="openid2.provider"
       href="https://indieauth.com/openid" />
 <meta http-equiv="X-XRDS-Location"
       content="https://indieauth.com/openid/xrds?domain=http://aaronparecki.com/" />


Minimum Implementation

At a minimum, support OpenID 1. This means only the following tags are needed:

 <link rel="openid.server"
       href="https://indieauth.com/openid" />
 <link rel="openid.delegate"
       href="http://aaronparecki.com/" />

We'll shelve the openid2 and xrds stuff until we get the first part working.

  • +1 -t


Getting Started

If you have not yet used IndieAuth, go to indieauth.com and try to sign in. There are instructions on indieauth.com for how to add the markup to your home page if you haven't yet.

Simplest example: add a link to your github profile on your home page:

<a href="https://github.com/username" rel="me">github</a>


Find an OpenID server gem

(not) 'openid' v0.01(only release in 2005) 'ruby-openid' v2.3.0 Sep 2003 (looks like a winner)

Authentication Flow

Using "peat.org" as the example OpenID, and authenticating at "opensourcebridge.org".

  • 1) End user goes to opensourcebridge.org (the RP) and enters in "peat.org" (the OpenID).
  • 2) RP requests "GET http://peat.org/" looking for server and delegate information:
    • 2a) RP discovers the openid.server link tag, seeing that the indieauth.com/openid is the end point that will handle the initial request.
    • 2b) RP discovers the "openid.delegate" tag, seeing that the OpenID being claimed is "peat.org"
  • 3) RP starts OpenID process
  • 4) OP (indieauth.com) verifies the parameters, and saves them for future reference.
  • 5) OP redirects the end user to the indieauth.com/auth page to complete authentication via one of the known methods.
  • 6) On successful authentication, OP then redirects the end user to the RP with a successful OpenID response.


List of notable websites that consume OpenID

Implementation Notes

RP directs the browser to indieauth.com with a bunch of parameters (see #3 above)

https://indieauth.cc/openid?openid.identity=http%3A%2F%2Faaronparecki.com%2F&openid.mode=checkid_setup&openid.return_to=http%3A%2F%2Fopensourcebridge.org%2Fbrowser_session%3Fopen_id_complete%3D1%26openid1_claimed_id%3Dhttp%253A%252F%252Faaronparecki.com%252F%26rp_nonce%3D2013-09-15T18%253A29%253A34ZUEhLXi&openid.sreg.optional=nickname%2Cemail%2Cfullname&openid.trust_root=http%3A%2F%2Fopensourcebridge.org%2F

Pretty-printed parameters:

{
  "openid.identity": "http://aaronparecki.com/",
  "openid.mode": "checkid_setup",
  "openid.return_to": "http://opensourcebridge.org/browser_session?open_id_complete=1&openid1_claimed_id=http%3A%2F%2Faaronparecki.com%2F&rp_nonce=2013-09-15T18%3A29%3A34ZUEhLXi",
  "openid.sreg.optional": "nickname,email,fullname",
  "openid.trust_root": "http://opensourcebridge.org/"
}


http://opensourcebridge.org/browser_session?open_id_complete=1&openid1_claimed_id=http%3A%2F%2Faaronparecki.com%2F&rp_nonce=2013-09-15T19%3A24%3A48ZSuYX6F&openid.assoc_handle=%7BHMAC-SHA1%7D%7B52360997%7D%7BSOSKKw%3D%3D%7D&openid.identity=http%3A%2F%2Faaronparecki.com%2F&openid.mode=id_res&openid.op_endpoint=http%3A%2F%2F4gfj.localtunnel.com%2Fopenid&openid.response_nonce=2013-09-15T19%3A25%3A11ZhE11Rl&openid.return_to=http%3A%2F%2Fopensourcebridge.org%2Fbrowser_session%3Fopen_id_complete%3D1%26openid1_claimed_id%3Dhttp%253A%252F%252Faaronparecki.com%252F%26rp_nonce%3D2013-09-15T19%253A24%253A48ZSuYX6F&openid.sig=3WXGrBUS%2BukquF7lYFwUadaLE7Q%3D&openid.signed=assoc_handle%2Cidentity%2Cmode%2Cop_endpoint%2Cresponse_nonce%2Creturn_to%2Csigned


Contributing to IndieAuth.com

Working on the 'openid-server' branch: https://github.com/aaronpk/IndieAuth/tree/openid-server

Please submit pull requests with any changes.


Changing github oauth scopes

Right now, indieauth does not send an oauth scope, and requests read access to all public info. This is an attempt to try and only get read only access to profile information only. https://github.com/bcomnes/IndieAuth/commit/825fe15e7c1dccba5ef927754cf51451c3f90bf9


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