annotate plugins/plugin_xep_0096.py @ 9:63ab3d8058f4

description of plugin_xep_0065
author Goffi <goffi@goffi.org>
date Mon, 26 Oct 2009 18:05:17 +0100
parents 4b05308d45f9
children 218ec9984fa5
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 SAT plugin for managing xep-0096
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6 Copyright (C) 2009 Jérôme Poisson (goffi@goffi.org)
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7
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8 This program is free software: you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation, either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 """
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21
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22 from logging import debug, info, error
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23 from twisted.words.xish import domish
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24 from twisted.internet import protocol
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25 from twisted.words.protocols.jabber import client, jid, xmlstream, error
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26 import os.path
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27 from twisted.internet import reactor #FIXME best way ???
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28 import pdb
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29
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30 PLUGIN_INFO = {
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31 "name": "XEP 0096 Plugin",
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32 "import_name": "XEP_0096",
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33 "type": "XEP",
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34 "dependencies": ["XEP_0065"],
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35 "main": "XEP_0096",
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36 "description": """Implementation of SI File Transfert"""
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37 }
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38
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39 class XEP_0096:
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40 def __init__(self, host):
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41 info("Plugin XEP_0096 initialization")
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42 self.host = host
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43 self._waiting_for_approval = {}
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44 host.add_IQ_cb("http://jabber.org/protocol/si", self.xep_96)
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45 host.bridge.addMethod("sendFile", ".communication", in_sign='ss', out_sign='s', method=self.sendFile)
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46
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47 def xep_96(self, IQ):
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48 info ("XEP-0096 management")
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49 SI_elem = IQ.firstChildElement()
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50 debug(SI_elem.toXml())
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51 filename = ""
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52 file_size = ""
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53 for element in SI_elem.elements():
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54 if element.name == "file":
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55 info ("File proposed: name=[%s] size=%s", element['name'], element['size'])
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56 filename = element["name"]
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57 file_size = element["size"]
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58 elif element.name == "feature":
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59 from_jid = IQ["from"]
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60 self._waiting_for_approval[IQ["id"]] = (element, from_jid, file_size)
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61 data={ "filename":filename, "from":from_jid, "size":file_size }
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62 self.host.askConfirmation(IQ["id"], "FILE_TRANSFERT", data, self.confirmationCB)
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63
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64 def confirmationCB(self, id, accepted, data):
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65 """Called on confirmation answer"""
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66 if accepted:
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67 data['size'] = self._waiting_for_approval[id][2]
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68 self.host.plugins["XEP_0065"].setData(data, id)
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69 self.approved(id)
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70 else:
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71 debug ("Transfert [%s] refused", id)
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72 del(self._waiting_for_approval[id])
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73
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74 def approved(self, id):
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75 """must be called when a file transfert has be accepted by client"""
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76 debug ("Transfert [%s] accepted", id)
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77
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78 if ( not self._waiting_for_approval.has_key(id) ):
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79 error ("Approved unknow id !")
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80 #TODO: manage this (maybe approved by several frontends)
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81 else:
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82 element, from_id, size = self._waiting_for_approval[id]
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83 del(self._waiting_for_approval[id])
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84 self.negociate(element, id, from_id)
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85
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86 def negociate(self, feat_elem, id, to_jid):
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87 #TODO: put this in a plugin
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88 #FIXME: over ultra mega ugly, need to be generic
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89 info ("Feature negociation")
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90 data = feat_elem.firstChildElement()
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91 field = data.firstChildElement()
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92 #FIXME: several options ! Q&D code for test only
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93 option = field.firstChildElement()
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94 value = option.firstChildElement()
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95 if unicode(value) == "http://jabber.org/protocol/bytestreams":
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96 #ugly, as usual, need to be entirely rewritten (just for test !)
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97 result = domish.Element(('', 'iq'))
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98 result['type'] = 'result'
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99 result['id'] = id
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100 result['to'] = to_jid
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101 si = result.addElement('si', 'http://jabber.org/protocol/si')
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102 file = si.addElement('file', 'http://jabber.org/protocol/si/profile/file-transfer')
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103 feature = si.addElement('feature', 'http://jabber.org/protocol/feature-neg')
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104 x = feature.addElement('x', 'jabber:x:data')
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105 x['type'] = 'submit'
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106 field = x.addElement('field')
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107 field['var'] = 'stream-method'
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108 value = field.addElement('value')
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109 value.addContent('http://jabber.org/protocol/bytestreams')
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110 self.host.xmlstream.send(result)
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111
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112 def fileCB(self, answer):
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113 if answer['type']=="result": #FIXME FIXME FIXME ugly ugly ugly ! and temp FIXME FIXME FIXME
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114 info("SENDING UGLY ANSWER")
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115 offer=client.IQ(self.host.xmlstream,'set')
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116 offer["from"]=self.host.me.full()
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117 offer["to"]=answer['from']
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118 query=offer.addElement('query', 'http://jabber.org/protocol/bytestreams')
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119 query['mode']='tcp'
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120 streamhost=query.addElement('streamhost')
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121 streamhost['host']=self.host.memory.getParamV("IP", "File Transfert")
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122 streamhost['port']=self.host.memory.getParamV("Port", "File Transfert")
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123 streamhost['jid']=self.host.me.full()
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124 offer.send()
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125
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126
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127
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128
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129 def sendFile(self, to, filepath):
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130 """send a file using XEP-0096
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131 Return an unique id to identify the transfert
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132 """
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133 debug ("sendfile (%s) to %s", filepath, to )
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134 print type(filepath), type(to)
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135
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136 statinfo = os.stat(filepath)
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137
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138 offer=client.IQ(self.host.xmlstream,'set')
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139 debug ("Transfert ID: %s", offer["id"])
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140
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141 self.host.plugins["XEP_0065"].sendFile(offer["id"], filepath, str(statinfo.st_size))
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142
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143 offer["from"]=self.host.me.full()
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144 offer["to"]=jid.JID(to).full()
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145 si=offer.addElement('si','http://jabber.org/protocol/si')
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146 si["mime-type"]='text/plain'
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147 si["profile"]='http://jabber.org/protocol/si/profile/file-transfer'
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148 file = si.addElement('file', 'http://jabber.org/protocol/si/profile/file-transfer')
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149 file['name']=os.path.basename(filepath)
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150 file['size']=str(statinfo.st_size)
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151
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152 ###
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153 # FIXME: Ugly temporary hard coded implementation of XEP-0020 & XEP-0004,
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154 # Need to be recoded elsewhere in a more generic way
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155 ###
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156
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157 feature=si.addElement('feature', "http://jabber.org/protocol/feature-neg")
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158 x=feature.addElement('x', "jabber:x:data")
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159 x['type']='form'
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160 field=x.addElement('field')
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161 field['type']='list-single'
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162 field['var']='stream-method'
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163 option = field.addElement('option')
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164 value = option.addElement('value', content='http://jabber.org/protocol/bytestreams')
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165
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166 offer.addCallback(self.fileCB)
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167 offer.send()
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168 return offer["id"] #XXX: using IQ id as file transfert id seems OK as IQ id are required
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169