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-rw-r--r--src/leap/mail/imap/server.py95
1 files changed, 95 insertions, 0 deletions
diff --git a/src/leap/mail/imap/server.py b/src/leap/mail/imap/server.py
index 3e10171..3aeca54 100644
--- a/src/leap/mail/imap/server.py
+++ b/src/leap/mail/imap/server.py
@@ -36,6 +36,38 @@ from twisted.mail.imap4 import IllegalClientResponse
from twisted.mail.imap4 import LiteralString, LiteralFile
+def _getContentType(msg):
+ """
+ Return a two-tuple of the main and subtype of the given message.
+ """
+ attrs = None
+ mm = msg.getHeaders(False, 'content-type').get('content-type', None)
+ if mm:
+ mm = ''.join(mm.splitlines())
+ mimetype = mm.split(';')
+ if mimetype:
+ type = mimetype[0].split('/', 1)
+ if len(type) == 1:
+ major = type[0]
+ minor = None
+ elif len(type) == 2:
+ major, minor = type
+ else:
+ major = minor = None
+ # XXX patched ---------------------------------------------
+ attrs = dict(x.strip().split('=', 1) for x in mimetype[1:])
+ # XXX patched ---------------------------------------------
+ else:
+ major = minor = None
+ else:
+ major = minor = None
+ return major, minor, attrs
+
+# Monkey-patch _getContentType to avoid bug that passes lower-case boundary in
+# BODYSTRUCTURE response.
+imap4._getContentType = _getContentType
+
+
class LEAPIMAPServer(imap4.IMAP4Server):
"""
An IMAP4 Server with a LEAP Storage Backend.
@@ -60,6 +92,69 @@ class LEAPIMAPServer(imap4.IMAP4Server):
# populate the test account properly (and only once
# per session)
+ #############################################################
+ #
+ # Twisted imap4 patch to workaround bad mime rendering in TB.
+ # See https://leap.se/code/issues/6773
+ # and https://bugzilla.mozilla.org/show_bug.cgi?id=149771
+ # Still unclear if this is a thunderbird bug.
+ # TODO send this patch upstream
+ #
+ #############################################################
+
+ def spew_body(self, part, id, msg, _w=None, _f=None):
+ if _w is None:
+ _w = self.transport.write
+ for p in part.part:
+ if msg.isMultipart():
+ msg = msg.getSubPart(p)
+ elif p > 0:
+ # Non-multipart messages have an implicit first part but no
+ # other parts - reject any request for any other part.
+ raise TypeError("Requested subpart of non-multipart message")
+
+ if part.header:
+ hdrs = msg.getHeaders(part.header.negate, *part.header.fields)
+ hdrs = imap4._formatHeaders(hdrs)
+ # PATCHED ##########################################
+ _w(str(part) + ' ' + imap4._literal(hdrs + "\r\n"))
+ # PATCHED ##########################################
+ elif part.text:
+ _w(str(part) + ' ')
+ _f()
+ return imap4.FileProducer(msg.getBodyFile()
+ ).beginProducing(self.transport
+ )
+ elif part.mime:
+ hdrs = imap4._formatHeaders(msg.getHeaders(True))
+
+ # PATCHED ##########################################
+ _w(str(part) + ' ' + imap4._literal(hdrs + "\r\n"))
+ # END PATCHED ######################################
+
+ elif part.empty:
+ _w(str(part) + ' ')
+ _f()
+ if part.part:
+ return imap4.FileProducer(msg.getBodyFile()
+ ).beginProducing(self.transport
+ )
+ else:
+ mf = imap4.IMessageFile(msg, None)
+ if mf is not None:
+ return imap4.FileProducer(mf.open()).beginProducing(self.transport)
+ return imap4.MessageProducer(msg, None, self._scheduler).beginProducing(self.transport)
+
+ else:
+ _w('BODY ' + imap4.collapseNestedLists([imap4.getBodyStructure(msg)]))
+
+ ##################################################################
+ #
+ # END Twisted imap4 patch to workaround bad mime rendering in TB.
+ # #6773
+ #
+ ##################################################################
+
def lineReceived(self, line):
"""
Attempt to parse a single line from the server.