b20f5192fb
Previously we hard-coded the imap server name in the case of Gmail repositories, but often we need a different host name. So, allow people to specify the hostname via the regular "remotehosteval" and "remotehost" settings, and only falling back to imap.gmail.com when nothing has been specified. Cache the hostname, so we don't evaluate the whole thing each time we query the host name. Make the remotehosteval processing more robust, by catching any Exceptions that occur, and throw a OfflineImapError, that explains where exactly the error had occured. You can test this, e.g. by setting remotehosteval to 1/"n" or some other invalid expression. The whole IMAP.gethost() function has been documented code wise while going through. Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de> Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
340 lines
13 KiB
Python
340 lines
13 KiB
Python
# IMAP repository support
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# Copyright (C) 2002 John Goerzen
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# <jgoerzen@complete.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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from offlineimap.repository.Base import BaseRepository
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from offlineimap import folder, imaputil, imapserver, OfflineImapError
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from offlineimap.folder.UIDMaps import MappedIMAPFolder
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from offlineimap.threadutil import ExitNotifyThread
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from threading import Event
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import re
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import types
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import os
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import netrc
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import errno
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class IMAPRepository(BaseRepository):
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def __init__(self, reposname, account):
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"""Initialize an IMAPRepository object."""
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BaseRepository.__init__(self, reposname, account)
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# self.ui is being set by the BaseRepository
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self._host = None
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self.imapserver = imapserver.ConfigedIMAPServer(self)
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self.folders = None
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self.nametrans = lambda foldername: foldername
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self.folderfilter = lambda foldername: 1
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self.folderincludes = []
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self.foldersort = cmp
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localeval = self.localeval
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if self.config.has_option(self.getsection(), 'nametrans'):
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self.nametrans = localeval.eval(self.getconf('nametrans'),
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{'re': re})
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if self.config.has_option(self.getsection(), 'folderfilter'):
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self.folderfilter = localeval.eval(self.getconf('folderfilter'),
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{'re': re})
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if self.config.has_option(self.getsection(), 'folderincludes'):
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self.folderincludes = localeval.eval(self.getconf('folderincludes'),
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{'re': re})
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if self.config.has_option(self.getsection(), 'foldersort'):
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self.foldersort = localeval.eval(self.getconf('foldersort'),
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{'re': re})
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def startkeepalive(self):
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keepalivetime = self.getkeepalive()
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if not keepalivetime: return
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self.kaevent = Event()
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self.kathread = ExitNotifyThread(target = self.imapserver.keepalive,
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name = "Keep alive " + self.getname(),
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args = (keepalivetime, self.kaevent))
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self.kathread.setDaemon(1)
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self.kathread.start()
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def stopkeepalive(self):
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if not hasattr(self, 'kaevent'):
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# Keepalive is not active.
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return
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self.kaevent.set()
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del self.kathread
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del self.kaevent
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def holdordropconnections(self):
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if not self.getholdconnectionopen():
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self.dropconnections()
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def dropconnections(self):
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self.imapserver.close()
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def getholdconnectionopen(self):
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if self.getidlefolders():
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return 1
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return self.getconfboolean("holdconnectionopen", 0)
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def getkeepalive(self):
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num = self.getconfint("keepalive", 0)
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if num == 0 and self.getidlefolders():
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return 29*60
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else:
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return num
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def getsep(self):
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return self.imapserver.delim
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def gethost(self):
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"""Return the configured hostname to connect to
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:returns: hostname as string or throws Exception"""
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if self._host: # use cached value if possible
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return self._host
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# 1) check for remotehosteval setting
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if self.config.has_option(self.getsection(), 'remotehosteval'):
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host = self.getconf('remotehosteval')
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try:
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host = self.localeval.eval(host)
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except Exception, e:
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raise OfflineImapError("remotehosteval option for repository "\
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"'%s' failed:\n%s" % (self, e),
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OfflineImapError.ERROR.REPO)
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if host:
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self._host = host
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return self._host
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# 2) check for plain remotehost setting
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host = self.getconf('remotehost', None)
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if host != None:
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self._host = host
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return self._host
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# no success
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raise OfflineImapError("No remote host for repository "\
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"'%s' specified." % self,
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OfflineImapError.ERROR.REPO)
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def getuser(self):
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user = None
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localeval = self.localeval
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if self.config.has_option(self.getsection(), 'remoteusereval'):
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user = self.getconf('remoteusereval')
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if user != None:
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return localeval.eval(user)
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user = self.getconf('remoteuser')
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if user != None:
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return user
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try:
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netrcentry = netrc.netrc().authenticators(self.gethost())
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except IOError, inst:
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if inst.errno != errno.ENOENT:
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raise
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else:
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if netrcentry:
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return netrcentry[0]
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try:
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netrcentry = netrc.netrc('/etc/netrc').authenticators(self.gethost())
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except IOError, inst:
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if inst.errno != errno.ENOENT:
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raise
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else:
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if netrcentry:
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return netrcentry[0]
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def getport(self):
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return self.getconfint('remoteport', None)
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def getssl(self):
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return self.getconfboolean('ssl', 0)
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def getsslclientcert(self):
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return self.getconf('sslclientcert', None)
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def getsslclientkey(self):
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return self.getconf('sslclientkey', None)
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def getsslcacertfile(self):
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"""Return the absolute path of the CA certfile to use, if any"""
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cacertfile = self.getconf('sslcacertfile', None)
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if cacertfile is None:
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return None
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cacertfile = os.path.expanduser(cacertfile)
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cacertfile = os.path.abspath(cacertfile)
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if not os.path.isfile(cacertfile):
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raise SyntaxWarning("CA certfile for repository '%s' could "
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"not be found. No such file: '%s'" \
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% (self.name, cacertfile))
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return cacertfile
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def getpreauthtunnel(self):
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return self.getconf('preauthtunnel', None)
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def getreference(self):
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return self.getconf('reference', '""')
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def getidlefolders(self):
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localeval = self.localeval
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return localeval.eval(self.getconf('idlefolders', '[]'))
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def getmaxconnections(self):
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num1 = len(self.getidlefolders())
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num2 = self.getconfint('maxconnections', 1)
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return max(num1, num2)
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def getexpunge(self):
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return self.getconfboolean('expunge', 1)
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def getpassword(self):
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"""Return the IMAP password for this repository.
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It tries to get passwords in the following order:
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1. evaluate Repository 'remotepasseval'
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2. read password from Repository 'remotepass'
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3. read password from file specified in Repository 'remotepassfile'
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4. read password from ~/.netrc
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5. read password from /etc/netrc
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On success we return the password.
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If all strategies fail we return None.
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"""
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# 1. evaluate Repository 'remotepasseval'
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passwd = self.getconf('remotepasseval', None)
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if passwd != None:
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return self.localeval.eval(passwd)
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# 2. read password from Repository 'remotepass'
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password = self.getconf('remotepass', None)
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if password != None:
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return password
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# 3. read password from file specified in Repository 'remotepassfile'
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passfile = self.getconf('remotepassfile', None)
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if passfile != None:
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fd = open(os.path.expanduser(passfile))
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password = fd.readline().strip()
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fd.close()
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return password
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# 4. read password from ~/.netrc
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try:
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netrcentry = netrc.netrc().authenticators(self.gethost())
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except IOError, inst:
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if inst.errno != errno.ENOENT:
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raise
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else:
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if netrcentry:
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user = self.getconf('remoteuser')
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if user == None or user == netrcentry[0]:
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return netrcentry[2]
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# 5. read password from /etc/netrc
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try:
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netrcentry = netrc.netrc('/etc/netrc').authenticators(self.gethost())
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except IOError, inst:
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if inst.errno != errno.ENOENT:
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raise
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else:
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if netrcentry:
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user = self.getconf('remoteuser')
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if user == None or user == netrcentry[0]:
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return netrcentry[2]
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# no strategy yielded a password!
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return None
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def getfolder(self, foldername):
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return self.getfoldertype()(self.imapserver, foldername,
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self.nametrans(foldername),
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self.accountname, self)
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def getfoldertype(self):
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return folder.IMAP.IMAPFolder
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def connect(self):
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imapobj = self.imapserver.acquireconnection()
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self.imapserver.releaseconnection(imapobj)
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def forgetfolders(self):
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self.folders = None
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def getfolders(self):
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if self.folders != None:
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return self.folders
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retval = []
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imapobj = self.imapserver.acquireconnection()
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# check whether to list all folders, or subscribed only
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listfunction = imapobj.list
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if self.config.has_option(self.getsection(), 'subscribedonly'):
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if self.getconf('subscribedonly') == "yes":
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listfunction = imapobj.lsub
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try:
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listresult = listfunction(directory = self.imapserver.reference)[1]
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finally:
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self.imapserver.releaseconnection(imapobj)
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for string in listresult:
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if string == None or \
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(type(string) == types.StringType and string == ''):
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# Bug in imaplib: empty strings in results from
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# literals.
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continue
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flags, delim, name = imaputil.imapsplit(string)
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flaglist = [x.lower() for x in imaputil.flagsplit(flags)]
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if '\\noselect' in flaglist:
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continue
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foldername = imaputil.dequote(name)
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if not self.folderfilter(foldername):
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self.ui.debug('imap',"Filtering out '%s' due to folderfilter" %\
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foldername)
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continue
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retval.append(self.getfoldertype()(self.imapserver, foldername,
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self.nametrans(foldername),
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self.accountname, self))
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if len(self.folderincludes):
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imapobj = self.imapserver.acquireconnection()
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try:
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for foldername in self.folderincludes:
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try:
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imapobj.select(foldername, readonly = 1)
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except ValueError:
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continue
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retval.append(self.getfoldertype()(self.imapserver,
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foldername,
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self.nametrans(foldername),
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self.accountname, self))
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finally:
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self.imapserver.releaseconnection(imapobj)
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retval.sort(lambda x, y: self.foldersort(x.getvisiblename(), y.getvisiblename()))
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self.folders = retval
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return retval
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def makefolder(self, foldername):
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#if self.getreference() != '""':
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# newname = self.getreference() + self.getsep() + foldername
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#else:
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# newname = foldername
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newname = foldername
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imapobj = self.imapserver.acquireconnection()
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try:
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result = imapobj.create(newname)
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if result[0] != 'OK':
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raise RuntimeError, "Repository %s could not create folder %s: %s" % (self.getname(), foldername, str(result))
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finally:
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self.imapserver.releaseconnection(imapobj)
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class MappedIMAPRepository(IMAPRepository):
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def getfoldertype(self):
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return MappedIMAPFolder
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