Mercurial > libervia-backend
annotate src/plugins/plugin_misc_imap.py @ 262:af3d4f11fe43
Added management of connection error
- core: connection_error signal is sent if it's impossible to connect
- bridge: added connection_error signal
- quick_frontend: an error_message is shown when a connection_error is received
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sat, 22 Jan 2011 15:53:56 +0100 |
| parents | 0ecd9c33fa3a |
| children | 62b17854254e |
| rev | line source |
|---|---|
| 253 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 """ | |
|
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5 SàT plugin for managing imap server |
| 253 | 6 Copyright (C) 2011 Jérôme Poisson (goffi@goffi.org) |
| 7 | |
| 8 This program is free software: you can redistribute it and/or modify | |
| 9 it under the terms of the GNU General Public License as published by | |
| 10 the Free Software Foundation, either version 3 of the License, or | |
| 11 (at your option) any later version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, | |
| 14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 GNU General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 """ | |
| 21 | |
| 22 from logging import debug, info, error | |
| 23 import warnings | |
|
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24 from twisted.internet import protocol,defer |
| 253 | 25 from twisted.words.protocols.jabber import error as jab_error |
|
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26 from twisted.cred import portal,checkers,credentials |
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27 from twisted.cred import error as cred_error |
| 253 | 28 from twisted.mail import imap4 |
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29 from twisted.python import failure |
| 253 | 30 from email.parser import Parser |
| 31 import email.message | |
| 32 import os,os.path | |
| 33 from cStringIO import StringIO | |
| 34 from twisted.internet import reactor | |
| 35 import pdb | |
| 36 | |
| 37 | |
| 38 from zope.interface import implements | |
| 39 | |
| 40 | |
| 41 PLUGIN_INFO = { | |
| 42 "name": "IMAP server Plugin", | |
| 43 "import_name": "IMAP", | |
| 44 "type": "Misc", | |
| 45 "protocols": [], | |
| 46 "dependencies": ["Maildir"], | |
| 47 "main": "IMAP_server", | |
| 48 "handler": "no", | |
| 49 "description": _("""Create an Imap server that you can use to read your "normal" type messages""") | |
| 50 } | |
| 51 | |
| 52 class IMAP_server(): | |
| 53 | |
| 54 params = """ | |
| 55 <params> | |
| 56 <general> | |
|
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57 <category name="Mail Server"> |
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58 <param name="IMAP Port" value="10143" type="string" /> |
| 253 | 59 </category> |
| 60 </general> | |
| 61 </params> | |
| 62 """ | |
| 63 | |
| 64 def __init__(self, host): | |
| 65 info(_("Plugin Imap Server initialization")) | |
| 66 self.host = host | |
| 67 | |
| 68 #parameters | |
| 69 host.memory.importParams(self.params) | |
| 70 | |
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71 port = int(self.host.memory.getParamA("IMAP Port", "Mail Server")) |
| 253 | 72 info(_("Launching IMAP server on port %d"), port) |
| 73 | |
| 74 self.server_factory = ImapServerFactory(self.host) | |
| 75 reactor.listenTCP(port, self.server_factory) | |
| 76 | |
| 77 class Message(): | |
| 78 implements(imap4.IMessage) | |
| 79 | |
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80 def __init__(self, uid, flags, mess_fp): |
| 253 | 81 debug('Message Init') |
| 82 self.uid=uid | |
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83 self.flags=flags |
| 253 | 84 self.mess_fp=mess_fp |
| 85 self.message=Parser().parse(mess_fp) | |
| 86 | |
| 87 def getUID(self): | |
| 88 """Retrieve the unique identifier associated with this message. | |
| 89 """ | |
| 90 debug('getUID (message)') | |
| 91 return self.uid | |
| 92 | |
| 93 def getFlags(self): | |
| 94 """Retrieve the flags associated with this message. | |
| 95 @return: The flags, represented as strings. | |
| 96 """ | |
| 97 debug('getFlags') | |
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98 return self.flags |
| 253 | 99 |
| 100 def getInternalDate(self): | |
| 101 """Retrieve the date internally associated with this message. | |
| 102 @return: An RFC822-formatted date string. | |
| 103 """ | |
| 104 debug('getInternalDate') | |
| 105 return self.message['Date'] | |
| 106 | |
| 107 | |
| 108 def getHeaders(self, negate, *names): | |
| 109 """Retrieve a group of message headers. | |
| 110 @param names: The names of the headers to retrieve or omit. | |
| 111 @param negate: If True, indicates that the headers listed in names | |
| 112 should be omitted from the return value, rather than included. | |
| 113 @return: A mapping of header field names to header field values | |
| 114 """ | |
| 115 debug('getHeaders %s - %s' % (negate, names)) | |
| 116 final_dict={} | |
| 117 to_check=[name.lower() for name in names] | |
| 118 for header in self.message.keys(): | |
| 119 if (negate and not header.lower() in to_check) or \ | |
| 120 (not negate and header.lower() in to_check): | |
| 121 final_dict[header]=self.message[header] | |
| 122 return final_dict | |
| 123 | |
| 124 def getBodyFile(self): | |
| 125 """Retrieve a file object containing only the body of this message. | |
| 126 """ | |
| 127 debug('getBodyFile') | |
| 128 return StringIO(self.message.get_payload()) | |
| 129 | |
| 130 def getSize(self): | |
| 131 """Retrieve the total size, in octets, of this message. | |
| 132 """ | |
| 133 debug('getSize') | |
| 134 self.mess_fp.seek(0,os.SEEK_END) | |
| 135 return self.mess_fp.tell() | |
| 136 | |
| 137 | |
| 138 def isMultipart(self): | |
| 139 """Indicate whether this message has subparts. | |
| 140 """ | |
| 141 debug('isMultipart') | |
| 142 return False | |
| 143 | |
| 144 def getSubPart(self,part): | |
| 145 """Retrieve a MIME sub-message | |
| 146 @param part: The number of the part to retrieve, indexed from 0. | |
| 147 @return: The specified sub-part. | |
| 148 """ | |
| 149 debug('getSubPart') | |
| 150 return TypeError | |
| 151 | |
| 152 | |
| 153 class SatMailbox: | |
| 154 implements(imap4.IMailbox) | |
| 155 | |
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156 def __init__(self,host,name,profile): |
| 253 | 157 self.host = host |
| 158 self.listeners=set() | |
| 159 debug ('Mailbox init (%s)', name) | |
| 160 if name!="INBOX": | |
| 161 raise imap4.MailboxException("Only INBOX is managed for the moment") | |
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162 self.mailbox=self.host.plugins["Maildir"].accessMessageBox(name,self.newMessage, profile) |
| 253 | 163 |
| 164 def newMessage(self): | |
| 165 """Called when a new message is in the mailbox""" | |
| 166 debug ("newMessage signal received") | |
| 167 nb_messages=self.getMessageCount() | |
| 168 for listener in self.listeners: | |
| 169 listener.newMessages(nb_messages,None) | |
| 170 | |
| 171 def getUIDValidity(self): | |
| 172 """Return the unique validity identifier for this mailbox. | |
| 173 """ | |
| 174 debug ('getUIDValidity') | |
| 175 return 0 | |
| 176 | |
| 177 def getUIDNext(self): | |
| 178 """Return the likely UID for the next message added to this mailbox. | |
| 179 """ | |
| 180 debug ('getUIDNext') | |
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181 return self.mailbox.getNextUid() |
| 253 | 182 |
| 183 def getUID(self,message): | |
| 184 """Return the UID of a message in the mailbox | |
| 185 @param message: The message sequence number | |
| 186 @return: The UID of the message. | |
| 187 """ | |
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188 debug ('getUID (%i)' % message) |
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189 #return self.mailbox.getUid(message-1) #XXX: it seems that this method get uid and not message sequence number |
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190 return message |
| 253 | 191 |
| 192 def getMessageCount(self): | |
| 193 """Return the number of messages in this mailbox. | |
| 194 """ | |
| 195 debug('getMessageCount') | |
| 196 ret = self.mailbox.getMessageCount() | |
| 197 debug("count = %i" % ret) | |
| 198 return ret | |
| 199 | |
| 200 def getRecentCount(self): | |
| 201 """Return the number of messages with the 'Recent' flag. | |
| 202 """ | |
| 203 debug('getRecentCount') | |
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204 return len(self.mailbox.getMessageIdsWithFlag('\\Recent')) |
| 253 | 205 |
| 206 def getUnseenCount(self): | |
| 207 """Return the number of messages with the 'Unseen' flag. | |
| 208 """ | |
| 209 debug('getUnseenCount') | |
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210 return self.getMessageCount()-len(self.mailbox.getMessageIdsWithFlag('\\SEEN')) |
| 253 | 211 |
| 212 def isWriteable(self): | |
| 213 """Get the read/write status of the mailbox. | |
| 214 @return: A true value if write permission is allowed, a false value otherwise. | |
| 215 """ | |
| 216 debug('isWriteable') | |
| 217 return True | |
| 218 | |
| 219 def destroy(self): | |
| 220 """Called before this mailbox is deleted, permanently. | |
| 221 """ | |
| 222 debug('destroy') | |
| 223 | |
| 224 | |
| 225 def requestStatus(self, names): | |
| 226 """Return status information about this mailbox. | |
| 227 @param names: The status names to return information regarding. | |
| 228 The possible values for each name are: MESSAGES, RECENT, UIDNEXT, | |
| 229 UIDVALIDITY, UNSEEN. | |
| 230 @return: A dictionary containing status information about the | |
| 231 requested names is returned. If the process of looking this | |
| 232 information up would be costly, a deferred whose callback will | |
| 233 eventually be passed this dictionary is returned instead. | |
| 234 """ | |
| 235 debug('requestStatus') | |
| 236 return imap4.statusRequestHelper(self, names) | |
| 237 | |
| 238 def addListener(self, listener): | |
| 239 """Add a mailbox change listener | |
| 240 | |
| 241 @type listener: Any object which implements C{IMailboxListener} | |
| 242 @param listener: An object to add to the set of those which will | |
| 243 be notified when the contents of this mailbox change. | |
| 244 """ | |
| 245 debug('addListener %s' % listener) | |
| 246 self.listeners.add(listener) | |
| 247 | |
| 248 def removeListener(self, listener): | |
| 249 """Remove a mailbox change listener | |
| 250 | |
| 251 @type listener: Any object previously added to and not removed from | |
| 252 this mailbox as a listener. | |
| 253 @param listener: The object to remove from the set of listeners. | |
| 254 | |
| 255 @raise ValueError: Raised when the given object is not a listener for | |
| 256 this mailbox. | |
| 257 """ | |
| 258 debug('removeListener') | |
| 259 if listener in self.listeners: | |
| 260 self.listeners.remove(listener) | |
| 261 else: | |
| 262 raise imap4.MailboxException('Trying to remove an unknown listener') | |
| 263 | |
| 264 def addMessage(self, message, flags = (), date = None): | |
| 265 """Add the given message to this mailbox. | |
| 266 @param message: The RFC822 formatted message | |
| 267 @param flags: The flags to associate with this message | |
| 268 @param date: If specified, the date to associate with this | |
| 269 @return: A deferred whose callback is invoked with the message | |
| 270 id if the message is added successfully and whose errback is | |
| 271 invoked otherwise. | |
| 272 """ | |
| 273 debug('addMessage') | |
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274 raise imap4.MailboxException("Client message addition not implemented yet") |
| 253 | 275 |
| 276 def expunge(self): | |
| 277 """Remove all messages flagged \\Deleted. | |
| 278 @return: The list of message sequence numbers which were deleted, | |
| 279 or a Deferred whose callback will be invoked with such a list. | |
| 280 """ | |
| 281 debug('expunge') | |
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282 self.mailbox.removeDeleted() |
| 253 | 283 |
| 284 def fetch(self, messages, uid): | |
| 285 """Retrieve one or more messages. | |
| 286 @param messages: The identifiers of messages to retrieve information | |
| 287 about | |
| 288 @param uid: If true, the IDs specified in the query are UIDs; | |
| 289 """ | |
| 290 debug('fetch (%s, %s)'%(messages,uid)) | |
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291 if uid: |
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292 messages.last = self.mailbox.getMaxUid() |
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293 messages.getnext = self.mailbox.getNextExistingUid |
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294 for mess_uid in messages: |
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295 if mess_uid == None: |
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296 debug ('stopping iteration') |
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297 raise StopIteration |
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298 try: |
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299 yield (mess_uid,Message(mess_uid,self.mailbox.getFlagsUid(mess_uid), self.mailbox.getMessageUid(mess_uid))) |
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300 except IndexError: |
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301 continue |
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302 else: |
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303 messages.last = self.getMessageCount() |
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304 for mess_idx in messages: |
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305 if mess_idx>self.getMessageCount(): |
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306 raise StopIteration |
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307 yield (mess_idx,Message(mess_idx,self.mailbox.getFlags(mess_idx),self.mailbox.getMessage(mess_idx-1))) |
| 253 | 308 |
| 309 def store(self, messages, flags, mode, uid): | |
| 310 """Set the flags of one or more messages. | |
| 311 @param messages: The identifiers of the messages to set the flags of. | |
| 312 @param flags: The flags to set, unset, or add. | |
| 313 @param mode: If mode is -1, these flags should be removed from the | |
| 314 specified messages. If mode is 1, these flags should be added to | |
| 315 the specified messages. If mode is 0, all existing flags should be | |
| 316 cleared and these flags should be added. | |
| 317 @param uid: If true, the IDs specified in the query are UIDs; | |
| 318 otherwise they are message sequence IDs. | |
| 319 @return: A dict mapping message sequence numbers to sequences of str | |
| 320 representing the flags set on the message after this operation has | |
| 321 been performed, or a Deferred whose callback will be invoked with | |
| 322 such a dict. | |
| 323 """ | |
| 324 debug('store') | |
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325 |
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326 flags=[flag.upper() for flag in flags] |
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327 |
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328 def updateFlags(getF,setF): |
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329 ret = {} |
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330 for mess_id in messages: |
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331 if (uid and mess_id == None) or (not uid and mess_id>self.getMessageCount()): |
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332 break |
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333 _flags=set(getF(mess_id) if mode else []) |
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334 if mode==-1: |
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335 _flags.difference_update(set(flags)) |
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336 else: |
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337 _flags.update(set(flags)) |
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338 new_flags=list(_flags) |
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339 setF(mess_id, new_flags) |
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340 ret[mess_id] = tuple(new_flags) |
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341 return ret |
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342 |
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343 if uid: |
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344 messages.last = self.mailbox.getMaxUid() |
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345 messages.getnext = self.mailbox.getNextExistingUid |
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346 ret = updateFlags(self.mailbox.getFlagsUid,self.mailbox.setFlagsUid) |
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347 for listener in self.listeners: |
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348 listener.flagsChanged(ret) |
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349 return ret |
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350 |
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351 else: |
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352 messages.last = self.getMessageCount() |
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353 ret = updateFlags(self.mailbox.getFlags,self.mailbox.setFlags) |
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354 newFlags={} |
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355 for idx in ret: |
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356 #we have to convert idx to uid for the listeners |
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357 newFlags[self.mailbox.getUid(idx)] = ret[idx] |
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358 for listener in self.listeners: |
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359 listener.flagsChanged(newFlags) |
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360 return ret |
| 253 | 361 |
| 362 def getFlags(self): | |
| 363 """Return the flags defined in this mailbox | |
| 364 Flags with the \\ prefix are reserved for use as system flags. | |
| 365 @return: A list of the flags that can be set on messages in this mailbox. | |
| 366 """ | |
| 367 debug('getFlags') | |
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368 return ['\\SEEN','\\ANSWERED','\\FLAGGED','\\DELETED','\\DRAFT'] #TODO: add '\\RECENT' |
| 253 | 369 |
| 370 def getHierarchicalDelimiter(self): | |
| 371 """Get the character which delimits namespaces for in this mailbox. | |
| 372 """ | |
| 373 debug('getHierarchicalDelimiter') | |
| 374 return '.' | |
| 375 | |
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376 class ImapSatAccount(imap4.MemoryAccount): |
| 253 | 377 #implements(imap4.IAccount) |
| 378 | |
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379 def __init__(self, host, profile): |
| 253 | 380 debug("ImapAccount init") |
| 381 self.host=host | |
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382 self.profile=profile |
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383 imap4.MemoryAccount.__init__(self,profile) |
| 253 | 384 self.addMailbox("Inbox") #We only manage Inbox for the moment |
| 385 debug ('INBOX added') | |
| 386 | |
| 387 def _emptyMailbox(self, name, id): | |
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388 return SatMailbox(self.host,name,self.profile) |
| 253 | 389 |
| 390 | |
| 391 class ImapRealm: | |
| 392 implements(portal.IRealm) | |
| 393 | |
| 394 def __init__(self,host): | |
| 395 self.host = host | |
| 396 | |
| 397 def requestAvatar(self, avatarID, mind, *interfaces): | |
| 398 debug('requestAvatar') | |
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399 profile=avatarID.decode('utf-8') |
| 253 | 400 if imap4.IAccount not in interfaces: |
| 401 raise NotImplementedError | |
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402 return imap4.IAccount, ImapSatAccount(self.host,profile), lambda:None |
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403 |
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404 class SatProfileCredentialChecker: |
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405 """ |
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406 This credential checker check against SàT's profile and associated jabber's password |
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407 Check if the profile exists, and if the password is OK |
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408 Return the profile as avatarId |
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409 """ |
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410 implements(checkers.ICredentialsChecker) |
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411 credentialInterfaces = (credentials.IUsernamePassword, |
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412 credentials.IUsernameHashedPassword) |
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413 |
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414 |
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415 def __init__(self, host): |
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416 self.host = host |
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417 |
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418 def _cbPasswordMatch(self, matched, profile): |
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419 if matched: |
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420 return profile.encode('utf-8') |
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421 else: |
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422 return failure.Failure(cred_error.UnauthorizedLogin()) |
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423 |
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424 def requestAvatarId(self, credentials): |
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425 profiles = self.host.memory.getProfilesList() |
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426 if not credentials.username in profiles: |
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427 return defer.fail(cred_error.UnauthorizedLogin()) |
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428 password = self.host.memory.getParamA("Password", "Connection", profile_key=credentials.username) |
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429 return defer.maybeDeferred( |
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430 credentials.checkPassword, |
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431 password).addCallback( |
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432 self._cbPasswordMatch, credentials.username) |
| 253 | 433 |
| 434 class ImapServerFactory(protocol.ServerFactory): | |
| 435 protocol = imap4.IMAP4Server | |
| 436 | |
| 437 def __init__(self, host): | |
| 438 self.host=host | |
| 439 | |
| 440 def startedConnecting(self, connector): | |
| 441 debug (_("IMAP server connection started")) | |
| 442 | |
| 443 def clientConnectionLost(self, connector, reason): | |
| 444 debug (_("IMAP server connection lost (reason: %s)"), reason) | |
| 445 | |
| 446 def buildProtocol(self, addr): | |
| 447 debug ("Building protocole") | |
| 448 prot = protocol.ServerFactory.buildProtocol(self, addr) | |
| 449 prot.portal = portal.Portal(ImapRealm(self.host)) | |
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450 prot.portal.registerChecker(SatProfileCredentialChecker(self.host)) |
| 253 | 451 return prot |