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  • Committer: Bazaar Package Importer
  • Author(s): Free Ekanayaka
  • Date: 2010-03-09 13:32:00 UTC
  • mfrom: (2.2.6 sid)
  • Revision ID: james.westby@ubuntu.com-20100309133200-xs2rrzwnn9k86sbx
Tags: 10.0.0-2
* Include changes from 9.0.0-2 which got skipped
* python-twisted depends on version >= 10.0 of other packages

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doc/howto/pb-cred.html
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html
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  PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN'
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  'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
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<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
 
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<?xml version="1.0" encoding="utf-8"?><!DOCTYPE html  PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN'  'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'><html lang="en" xmlns="http://www.w3.org/1999/xhtml">
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  <head>
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<title>Twisted Documentation: Authentication with Perspective Broker</title>
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<link href="stylesheet.css" rel="stylesheet" type="text/css"/>
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<p>This technique also relies upon the fact that the
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<code>pb.Referenceable</code> reference can <em>only</em> come from someone
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who holds a corresponding <code>pb.RemoteReference</code>. The design of the
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serialization mechanism (implemented in <code class="API"><a href="http://twistedmatrix.com/documents/9.0.0/api/twisted.spread.jelly.html" title="twisted.spread.jelly">twisted.spread.jelly</a></code>: pb, jelly, spread.. get it?  Look for
 
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serialization mechanism (implemented in <code class="API"><a href="http://twistedmatrix.com/documents/10.0.0/api/twisted.spread.jelly.html" title="twisted.spread.jelly">twisted.spread.jelly</a></code>: pb, jelly, spread.. get it?  Look for
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<q>banana</q>, too.  What other networking framework
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can claim API names based on sandwich ingredients?) makes it impossible for
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a client to obtain a reference that they weren't explicitly given.
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<p>pbAnonServer.py implements a server based on pb6server.py, extending it to
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permit anonymous logins in addition to authenticated logins. A
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<code class="API"><a href="http://twistedmatrix.com/documents/9.0.0/api/twisted.cred.checkers.AllowAnonymousAccess.html" title="twisted.cred.checkers.AllowAnonymousAccess">AllowAnonymousAccess</a></code>
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checker and a <code class="API"><a href="http://twistedmatrix.com/documents/9.0.0/api/twisted.cred.checkers.
 
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<code class="API"><a href="http://twistedmatrix.com/documents/10.0.0/api/twisted.cred.checkers.AllowAnonymousAccess.html" title="twisted.cred.checkers.AllowAnonymousAccess">AllowAnonymousAccess</a></code>
 
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checker and a <code class="API"><a href="http://twistedmatrix.com/documents/10.0.0/api/twisted.cred.checkers.
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.html" title="twisted.cred.checkers.
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">
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InMemoryUsernamePasswordDatabaseDontUse</a></code> checker are registered and the
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client's choice of credentials object determines which is used to authenticate
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the login.  In either case, the realm will be called on to create an avatar for
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the login.  <code>AllowAnonymousAccess</code> always produces an <code>avatarId
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</code> of <code class="API"><a href="http://twistedmatrix.com/documents/9.0.0/api/twisted.cred.checkers.ANONYMOUS.html" title="twisted.cred.checkers.ANONYMOUS">ANONYMOUS</a></code>.</p>
 
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</code> of <code class="API"><a href="http://twistedmatrix.com/documents/10.0.0/api/twisted.cred.checkers.ANONYMOUS.html" title="twisted.cred.checkers.ANONYMOUS">ANONYMOUS</a></code>.</p>
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<p>On the client side, the only change is the use of an instance of
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<code class="API"><a href="http://twistedmatrix.com/documents/9.0.0/api/twisted.cred.credentials.Anonymous.html" title="twisted.cred.credentials.Anonymous">Anonymous</a></code> when calling
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<code class="API"><a href="http://twistedmatrix.com/documents/9.0.0/api/twisted.spread.pb.PBClientFactory.login.html" title="twisted.spread.pb.PBClientFactory.login">PBClientFactory.login</a></code>.</p>
 
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<code class="API"><a href="http://twistedmatrix.com/documents/10.0.0/api/twisted.cred.credentials.Anonymous.html" title="twisted.cred.credentials.Anonymous">Anonymous</a></code> when calling
 
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<code class="API"><a href="http://twistedmatrix.com/documents/10.0.0/api/twisted.spread.pb.PBClientFactory.login.html" title="twisted.spread.pb.PBClientFactory.login">PBClientFactory.login</a></code>.</p>
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<h2>Using Avatars<a name="auto12"/></h2>
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<h3>Viewable<a name="auto17"/></h3> <a name="viewable" shape="rect"/>
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<p>Once you have <code>IPerspective</code> objects (i.e. the Avatar) to
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represent users, the <code class="API"><a href="http://twistedmatrix.com/documents/9.0.0/api/twisted.spread.flavors.Viewable.html" title="twisted.spread.flavors.Viewable">Viewable</a></code> class can come into play. This
 
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represent users, the <code class="API"><a href="http://twistedmatrix.com/documents/10.0.0/api/twisted.spread.flavors.Viewable.html" title="twisted.spread.flavors.Viewable">Viewable</a></code> class can come into play. This
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class behaves a lot like <code>Referenceable</code>: it turns into a
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<code>RemoteReference</code> when sent over the wire, and certain methods
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can be invoked by the holder of that reference. However, the methods that
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backwards-compatibility.</span></a></li></ol></div>
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    <p><a href="index.html">Index</a></p>
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    <span class="version">Version: 9.0.0</span>
 
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    <span class="version">Version: 10.0.0</span>
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  </body>
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</html>
 
 
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