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authorlouiz@4325f9fc-e183-4c21-96ce-0ab188b42d13 <louiz@4325f9fc-e183-4c21-96ce-0ab188b42d13>2010-01-31 15:09:58 +0000
committerlouiz@4325f9fc-e183-4c21-96ce-0ab188b42d13 <louiz@4325f9fc-e183-4c21-96ce-0ab188b42d13>2010-01-31 15:09:58 +0000
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inclus xmppy0.5-RC1 avec les sources, sinon c'est chiant.
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+## browser.py
+##
+## Copyright (C) 2004 Alexey "Snake" Nezhdanov
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+
+# $Id: browser.py,v 1.12 2007/05/13 17:55:14 normanr Exp $
+
+"""Browser module provides DISCO server framework for your application.
+This functionality can be used for very different purposes - from publishing
+software version and supported features to building of "jabber site" that users
+can navigate with their disco browsers and interact with active content.
+
+Such functionality is achieved via registering "DISCO handlers" that are
+automatically called when user requests some node of your disco tree.
+"""
+
+from dispatcher import *
+from client import PlugIn
+
+class Browser(PlugIn):
+ """ WARNING! This class is for components only. It will not work in client mode!
+
+ Standart xmpppy class that is ancestor of PlugIn and can be attached
+ to your application.
+ All processing will be performed in the handlers registered in the browser
+ instance. You can register any number of handlers ensuring that for each
+ node/jid combination only one (or none) handler registered.
+ You can register static information or the fully-blown function that will
+ calculate the answer dynamically.
+ Example of static info (see JEP-0030, examples 13-14):
+ # cl - your xmpppy connection instance.
+ b=xmpp.browser.Browser()
+ b.PlugIn(cl)
+ items=[]
+ item={}
+ item['jid']='catalog.shakespeare.lit'
+ item['node']='books'
+ item['name']='Books by and about Shakespeare'
+ items.append(item)
+ item={}
+ item['jid']='catalog.shakespeare.lit'
+ item['node']='clothing'
+ item['name']='Wear your literary taste with pride'
+ items.append(item)
+ item={}
+ item['jid']='catalog.shakespeare.lit'
+ item['node']='music'
+ item['name']='Music from the time of Shakespeare'
+ items.append(item)
+ info={'ids':[], 'features':[]}
+ b.setDiscoHandler({'items':items,'info':info})
+
+ items should be a list of item elements.
+ every item element can have any of these four keys: 'jid', 'node', 'name', 'action'
+ info should be a dicionary and must have keys 'ids' and 'features'.
+ Both of them should be lists:
+ ids is a list of dictionaries and features is a list of text strings.
+ Example (see JEP-0030, examples 1-2)
+ # cl - your xmpppy connection instance.
+ b=xmpp.browser.Browser()
+ b.PlugIn(cl)
+ items=[]
+ ids=[]
+ ids.append({'category':'conference','type':'text','name':'Play-Specific Chatrooms'})
+ ids.append({'category':'directory','type':'chatroom','name':'Play-Specific Chatrooms'})
+ features=[NS_DISCO_INFO,NS_DISCO_ITEMS,NS_MUC,NS_REGISTER,NS_SEARCH,NS_TIME,NS_VERSION]
+ info={'ids':ids,'features':features}
+ # info['xdata']=xmpp.protocol.DataForm() # JEP-0128
+ b.setDiscoHandler({'items':[],'info':info})
+ """
+ def __init__(self):
+ """Initialises internal variables. Used internally."""
+ PlugIn.__init__(self)
+ DBG_LINE='browser'
+ self._exported_methods=[]
+ self._handlers={'':{}}
+
+ def plugin(self, owner):
+ """ Registers it's own iq handlers in your application dispatcher instance.
+ Used internally."""
+ owner.RegisterHandler('iq',self._DiscoveryHandler,typ='get',ns=NS_DISCO_INFO)
+ owner.RegisterHandler('iq',self._DiscoveryHandler,typ='get',ns=NS_DISCO_ITEMS)
+
+ def plugout(self):
+ """ Unregisters browser's iq handlers from your application dispatcher instance.
+ Used internally."""
+ self._owner.UnregisterHandler('iq',self._DiscoveryHandler,typ='get',ns=NS_DISCO_INFO)
+ self._owner.UnregisterHandler('iq',self._DiscoveryHandler,typ='get',ns=NS_DISCO_ITEMS)
+
+ def _traversePath(self,node,jid,set=0):
+ """ Returns dictionary and key or None,None
+ None - root node (w/o "node" attribute)
+ /a/b/c - node
+ /a/b/ - branch
+ Set returns '' or None as the key
+ get returns '' or None as the key or None as the dict.
+ Used internally."""
+ if self._handlers.has_key(jid): cur=self._handlers[jid]
+ elif set:
+ self._handlers[jid]={}
+ cur=self._handlers[jid]
+ else: cur=self._handlers['']
+ if node is None: node=[None]
+ else: node=node.replace('/',' /').split('/')
+ for i in node:
+ if i<>'' and cur.has_key(i): cur=cur[i]
+ elif set and i<>'': cur[i]={dict:cur,str:i}; cur=cur[i]
+ elif set or cur.has_key(''): return cur,''
+ else: return None,None
+ if cur.has_key(1) or set: return cur,1
+ raise "Corrupted data"
+
+ def setDiscoHandler(self,handler,node='',jid=''):
+ """ This is the main method that you will use in this class.
+ It is used to register supplied DISCO handler (or dictionary with static info)
+ as handler of some disco tree branch.
+ If you do not specify the node this handler will be used for all queried nodes.
+ If you do not specify the jid this handler will be used for all queried JIDs.
+
+ Usage:
+ cl.Browser.setDiscoHandler(someDict,node,jid)
+ or
+ cl.Browser.setDiscoHandler(someDISCOHandler,node,jid)
+ where
+
+ someDict={
+ 'items':[
+ {'jid':'jid1','action':'action1','node':'node1','name':'name1'},
+ {'jid':'jid2','action':'action2','node':'node2','name':'name2'},
+ {'jid':'jid3','node':'node3','name':'name3'},
+ {'jid':'jid4','node':'node4'}
+ ],
+ 'info' :{
+ 'ids':[
+ {'category':'category1','type':'type1','name':'name1'},
+ {'category':'category2','type':'type2','name':'name2'},
+ {'category':'category3','type':'type3','name':'name3'},
+ ],
+ 'features':['feature1','feature2','feature3','feature4'],
+ 'xdata':DataForm
+ }
+ }
+
+ and/or
+
+ def someDISCOHandler(session,request,TYR):
+ # if TYR=='items': # returns items list of the same format as shown above
+ # elif TYR=='info': # returns info dictionary of the same format as shown above
+ # else: # this case is impossible for now.
+ """
+ self.DEBUG('Registering handler %s for "%s" node->%s'%(handler,jid,node), 'info')
+ node,key=self._traversePath(node,jid,1)
+ node[key]=handler
+
+ def getDiscoHandler(self,node='',jid=''):
+ """ Returns the previously registered DISCO handler
+ that is resonsible for this node/jid combination.
+ Used internally."""
+ node,key=self._traversePath(node,jid)
+ if node: return node[key]
+
+ def delDiscoHandler(self,node='',jid=''):
+ """ Unregisters DISCO handler that is resonsible for this
+ node/jid combination. When handler is unregistered the branch
+ is handled in the same way that it's parent branch from this moment.
+ """
+ node,key=self._traversePath(node,jid)
+ if node:
+ handler=node[key]
+ del node[dict][node[str]]
+ return handler
+
+ def _DiscoveryHandler(self,conn,request):
+ """ Servers DISCO iq request from the remote client.
+ Automatically determines the best handler to use and calls it
+ to handle the request. Used internally.
+ """
+ node=request.getQuerynode()
+ if node:
+ nodestr=node
+ else:
+ nodestr='None'
+ handler=self.getDiscoHandler(node,request.getTo())
+ if not handler:
+ self.DEBUG("No Handler for request with jid->%s node->%s ns->%s"%(request.getTo().__str__().encode('utf8'),nodestr.encode('utf8'),request.getQueryNS().encode('utf8')),'error')
+ conn.send(Error(request,ERR_ITEM_NOT_FOUND))
+ raise NodeProcessed
+ self.DEBUG("Handling request with jid->%s node->%s ns->%s"%(request.getTo().__str__().encode('utf8'),nodestr.encode('utf8'),request.getQueryNS().encode('utf8')),'ok')
+ rep=request.buildReply('result')
+ if node: rep.setQuerynode(node)
+ q=rep.getTag('query')
+ if request.getQueryNS()==NS_DISCO_ITEMS:
+ # handler must return list: [{jid,action,node,name}]
+ if type(handler)==dict: lst=handler['items']
+ else: lst=handler(conn,request,'items')
+ if lst==None:
+ conn.send(Error(request,ERR_ITEM_NOT_FOUND))
+ raise NodeProcessed
+ for item in lst: q.addChild('item',item)
+ elif request.getQueryNS()==NS_DISCO_INFO:
+ if type(handler)==dict: dt=handler['info']
+ else: dt=handler(conn,request,'info')
+ if dt==None:
+ conn.send(Error(request,ERR_ITEM_NOT_FOUND))
+ raise NodeProcessed
+ # handler must return dictionary:
+ # {'ids':[{},{},{},{}], 'features':[fe,at,ur,es], 'xdata':DataForm}
+ for id in dt['ids']: q.addChild('identity',id)
+ for feature in dt['features']: q.addChild('feature',{'var':feature})
+ if dt.has_key('xdata'): q.addChild(node=dt['xdata'])
+ conn.send(rep)
+ raise NodeProcessed