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authorKali Kaneko <kali@leap.se>2013-12-27 02:06:44 -0400
committerKali Kaneko <kali@leap.se>2014-01-08 20:32:08 -0400
commit25a0aea875fd0d67238beed1237f7239474673ec (patch)
treeafafe7eb7e18acf6420c29b88a8678070e997bcd /src/leap/mail
parent62b0cd6301b7097dfa2776b677ab3c7d27f60d7b (diff)
First stage of the storage schema rewrite.
* Separates between flags, docs, body and attachment docs. * Implement IMessageCopier interface: move and have fun! This little change is known to push forward our beloved architect emotional rollercoster. * Message deduplication. * It also fixes a hidden bug that was rendering the multipart mime interface useless (yes, the "True" parameter in the parsestr method). * Does not handle well nested attachs, includes dirty workaround that flattens them. * Includes chiiph's patch for rc2: * return deferred from addMessage * convert StringIO types to string * remove unneeded yields from the chain of deferreds in fetcher
Diffstat (limited to 'src/leap/mail')
-rw-r--r--src/leap/mail/imap/fetch.py7
-rw-r--r--src/leap/mail/imap/fields.py49
-rw-r--r--src/leap/mail/imap/index.py4
-rw-r--r--src/leap/mail/imap/mailbox.py103
-rw-r--r--src/leap/mail/imap/messages.py831
-rw-r--r--src/leap/mail/imap/parser.py24
6 files changed, 802 insertions, 216 deletions
diff --git a/src/leap/mail/imap/fetch.py b/src/leap/mail/imap/fetch.py
index 0b31c3b..fdf1412 100644
--- a/src/leap/mail/imap/fetch.py
+++ b/src/leap/mail/imap/fetch.py
@@ -412,13 +412,13 @@ class LeapIncomingMail(object):
# decrypt or fail gracefully
try:
- decrdata, valid_sig = yield self._decrypt_and_verify_data(
+ decrdata, valid_sig = self._decrypt_and_verify_data(
encdata, senderPubkey)
except keymanager_errors.DecryptError as e:
logger.warning('Failed to decrypt encrypted message (%s). '
'Storing message without modifications.' % str(e))
# Bailing out!
- yield (msg, False)
+ return (msg, False)
# decrypted successully, now fix encoding and parse
try:
@@ -441,7 +441,7 @@ class LeapIncomingMail(object):
# all ok, replace payload by unencrypted payload
msg.set_payload(decrmsg.get_payload())
- yield (msg, valid_sig)
+ return (msg, valid_sig)
def _maybe_decrypt_inline_encrypted_msg(self, origmsg, encoding,
senderPubkey):
@@ -527,6 +527,7 @@ class LeapIncomingMail(object):
"""
log.msg('adding message to local db')
doc, data = msgtuple
+
if isinstance(data, list):
data = data[0]
diff --git a/src/leap/mail/imap/fields.py b/src/leap/mail/imap/fields.py
index 96b937e..40817cd 100644
--- a/src/leap/mail/imap/fields.py
+++ b/src/leap/mail/imap/fields.py
@@ -25,18 +25,35 @@ class WithMsgFields(object):
Container class for class-attributes to be shared by
several message-related classes.
"""
- # Internal representation of Message
- DATE_KEY = "date"
- HEADERS_KEY = "headers"
- FLAGS_KEY = "flags"
- MBOX_KEY = "mbox"
+ # indexing
CONTENT_HASH_KEY = "chash"
- RAW_KEY = "raw"
- SUBJECT_KEY = "subject"
+ PAYLOAD_HASH_KEY = "phash"
+
+ # Internal representation of Message
+
+ # flags doc
UID_KEY = "uid"
+ MBOX_KEY = "mbox"
+ SEEN_KEY = "seen"
+ RECENT_KEY = "recent"
+ FLAGS_KEY = "flags"
MULTIPART_KEY = "multi"
SIZE_KEY = "size"
+ # headers
+ HEADERS_KEY = "headers"
+ NUM_PARTS_KEY = "numparts"
+ PARTS_MAP_KEY = "partmap"
+ DATE_KEY = "date"
+ SUBJECT_KEY = "subject"
+
+ # attachment
+ PART_NUMBER_KEY = "part"
+ RAW_KEY = "raw"
+
+ # content
+ BODY_KEY = "body"
+
# Mailbox specific keys
CLOSED_KEY = "closed"
CREATED_KEY = "created"
@@ -55,10 +72,6 @@ class WithMsgFields(object):
INBOX_VAL = "inbox"
- # Flags for SoledadDocument for indexing.
- SEEN_KEY = "seen"
- RECENT_KEY = "recent"
-
# Flags in Mailbox and Message
SEEN_FLAG = "\\Seen"
RECENT_FLAG = "\\Recent"
@@ -82,7 +95,9 @@ class WithMsgFields(object):
TYPE_SUBS_IDX = 'by-type-and-subscribed'
TYPE_MBOX_SEEN_IDX = 'by-type-and-mbox-and-seen'
TYPE_MBOX_RECT_IDX = 'by-type-and-mbox-and-recent'
- TYPE_HASH_IDX = 'by-type-and-hash'
+ TYPE_C_HASH_IDX = 'by-type-and-contenthash'
+ TYPE_C_HASH_PART_IDX = 'by-type-and-contenthash-and-partnumber'
+ TYPE_P_HASH_IDX = 'by-type-and-payloadhash'
# Tomas created the `recent and seen index`, but the semantic is not too
# correct since the recent flag is volatile.
@@ -90,7 +105,9 @@ class WithMsgFields(object):
KTYPE = TYPE_KEY
MBOX_VAL = TYPE_MBOX_VAL
- HASH_VAL = CONTENT_HASH_KEY
+ CHASH_VAL = CONTENT_HASH_KEY
+ PHASH_VAL = PAYLOAD_HASH_KEY
+ PART_VAL = PART_NUMBER_KEY
INDEXES = {
# generic
@@ -102,7 +119,11 @@ class WithMsgFields(object):
TYPE_SUBS_IDX: [KTYPE, 'bool(subscribed)'],
# content, headers doc
- TYPE_HASH_IDX: [KTYPE, HASH_VAL],
+ TYPE_C_HASH_IDX: [KTYPE, CHASH_VAL],
+ # attachment docs
+ TYPE_C_HASH_PART_IDX: [KTYPE, CHASH_VAL, PART_VAL],
+ # attachment payload dedup
+ TYPE_P_HASH_IDX: [KTYPE, PHASH_VAL],
# messages
TYPE_MBOX_SEEN_IDX: [KTYPE, MBOX_VAL, 'bool(seen)'],
diff --git a/src/leap/mail/imap/index.py b/src/leap/mail/imap/index.py
index 2280d86..5f0919a 100644
--- a/src/leap/mail/imap/index.py
+++ b/src/leap/mail/imap/index.py
@@ -21,7 +21,7 @@ import logging
from leap.common.check import leap_assert, leap_assert_type
-from leap.mail.imap.account import SoledadBackedAccount
+from leap.mail.imap.fields import fields
logger = logging.getLogger(__name__)
@@ -54,7 +54,7 @@ class IndexedDB(object):
db_indexes = dict()
if self._soledad is not None:
db_indexes = dict(self._soledad.list_indexes())
- for name, expression in SoledadBackedAccount.INDEXES.items():
+ for name, expression in fields.INDEXES.items():
if name not in db_indexes:
# The index does not yet exist.
self._soledad.create_index(name, *expression)
diff --git a/src/leap/mail/imap/mailbox.py b/src/leap/mail/imap/mailbox.py
index 09c06a2..5ea6f55 100644
--- a/src/leap/mail/imap/mailbox.py
+++ b/src/leap/mail/imap/mailbox.py
@@ -17,7 +17,13 @@
"""
Soledad Mailbox.
"""
+import copy
+import threading
import logging
+import time
+import StringIO
+import cStringIO
+
from collections import defaultdict
from twisted.internet import defer
@@ -45,9 +51,14 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
The low-level database methods are contained in MessageCollection class,
which we instantiate and make accessible in the `messages` attribute.
"""
- implements(imap4.IMailboxInfo, imap4.IMailbox, imap4.ICloseableMailbox)
+ implements(
+ imap4.IMailbox,
+ imap4.IMailboxInfo,
+ imap4.ICloseableMailbox,
+ imap4.IMessageCopier)
+
# XXX should finish the implementation of IMailboxListener
- # XXX should implement IMessageCopier too
+ # XXX should implement ISearchableMailbox too
messages = None
_closed = False
@@ -65,6 +76,7 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
CMD_UNSEEN = "UNSEEN"
_listeners = defaultdict(set)
+ next_uid_lock = threading.Lock()
def __init__(self, mbox, soledad=None, rw=1):
"""
@@ -284,8 +296,9 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
:rtype: int
"""
- self.last_uid += 1
- return self.last_uid
+ with self.next_uid_lock:
+ self.last_uid += 1
+ return self.last_uid
def getMessageCount(self):
"""
@@ -366,6 +379,8 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
:return: a deferred that evals to None
"""
+ if isinstance(message, (cStringIO.OutputType, StringIO.StringIO)):
+ message = message.getvalue()
# XXX we should treat the message as an IMessage from here
leap_assert_type(message, basestring)
uid_next = self.getUIDNext()
@@ -375,11 +390,12 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
else:
flags = tuple(str(flag) for flag in flags)
- d = self._do_add_messages(message, flags, date, uid_next)
+ d = self._do_add_message(message, flags, date, uid_next)
d.addCallback(self._notify_new)
+ return d
@deferred
- def _do_add_messages(self, message, flags, date, uid_next):
+ def _do_add_message(self, message, flags, date, uid_next):
"""
Calls to the messageCollection add_msg method (deferred to thread).
Invoked from addMessage.
@@ -420,28 +436,21 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
# we should postpone the removal
self._soledad.delete_doc(self._get_mbox())
+ @deferred
def expunge(self):
"""
Remove all messages flagged \\Deleted
"""
if not self.isWriteable():
raise imap4.ReadOnlyMailbox
- delete = []
deleted = []
-
- for m in self.messages.get_all_docs():
- # XXX should operate with LeapMessages instead,
- # so we don't expose the implementation.
- # (so, iterate for m in self.messages)
- if self.DELETED_FLAG in m.content[self.FLAGS_KEY]:
- delete.append(m)
- for m in delete:
- deleted.append(m.content)
- self.messages.remove(m)
-
- # XXX should return the UIDs of the deleted messages
- # more generically
- return [x for x in range(len(deleted))]
+ for m in self.messages:
+ if self.DELETED_FLAG in m.getFlags():
+ self.messages.remove(m)
+ # XXX this would ve more efficient if we can just pass
+ # a sequence of uids.
+ deleted.append(m.getUID())
+ return deleted
@deferred
def fetch(self, messages, uid):
@@ -510,6 +519,17 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
session is the first session to be notified about a message,
then that message SHOULD be considered recent.
"""
+ # TODO this fucker, for the sake of correctness, is messing with
+ # the whole collection of flag docs.
+
+ # Possible ways of action:
+ # 1. Ignore it, we want fun.
+ # 2. Trigger it with a delay
+ # 3. Route it through a queue with lesser priority than the
+ # regularar writer.
+
+ # hmm let's try 2. in a quickndirty way...
+ time.sleep(1)
log.msg('unsetting recent flags...')
for msg in self.messages.get_recent():
msg.removeFlags((fields.RECENT_FLAG,))
@@ -570,6 +590,8 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
for msg_id in messages:
log.msg("MSG ID = %s" % msg_id)
msg = self.messages.get_msg_by_uid(msg_id)
+ if not msg:
+ return result
if mode == 1:
msg.addFlags(flags)
elif mode == -1:
@@ -589,15 +611,36 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
self.expunge()
self.closed = True
- #@deferred
- #def copy(self, messageObject):
- #"""
- #Copy the given message object into this mailbox.
- #"""
- # XXX should just:
- # 1. Get the message._fdoc
- # 2. Change the UID to UIDNext for this mailbox
- # 3. Add implements IMessageCopier
+ # IMessageCopier
+
+ @deferred
+ def copy(self, messageObject):
+ """
+ Copy the given message object into this mailbox.
+ """
+ uid_next = self.getUIDNext()
+ msg = messageObject
+
+ # XXX should use a public api instead
+ fdoc = msg._fdoc
+ if not fdoc:
+ logger.debug("Tried to copy a MSG with no fdoc")
+ return
+
+ new_fdoc = copy.deepcopy(fdoc.content)
+ new_fdoc[self.UID_KEY] = uid_next
+ new_fdoc[self.MBOX_KEY] = self.mbox
+
+ d = self._do_add_doc(new_fdoc)
+ d.addCallback(self._notify_new)
+
+ @deferred
+ def _do_add_doc(self, doc):
+ """
+ Defers the adding of a new doc.
+ :param doc: document to be created in soledad.
+ """
+ self._soledad.create_doc(doc)
# convenience fun
diff --git a/src/leap/mail/imap/messages.py b/src/leap/mail/imap/messages.py
index b0d5da2..c69c023 100644
--- a/src/leap/mail/imap/messages.py
+++ b/src/leap/mail/imap/messages.py
@@ -29,9 +29,9 @@ from zope.interface import implements
from zope.proxy import sameProxiedObjects
from leap.common.check import leap_assert, leap_assert_type
+from leap.common.decorators import memoized_method
from leap.common.mail import get_email_charset
from leap.mail.decorators import deferred
-from leap.mail.imap.account import SoledadBackedAccount
from leap.mail.imap.index import IndexedDB
from leap.mail.imap.fields import fields, WithMsgFields
from leap.mail.imap.parser import MailParser, MBoxParser
@@ -40,6 +40,181 @@ from leap.mail.messageflow import IMessageConsumer, MessageProducer
logger = logging.getLogger(__name__)
+def first(things):
+ """
+ Return the head of a collection.
+ """
+ try:
+ return things[0]
+ except (IndexError, TypeError):
+ return None
+
+
+class MessageBody(object):
+ """
+ IMessagePart implementor for the main
+ body of a multipart message.
+
+ Excusatio non petita: see the interface documentation.
+ """
+
+ implements(imap4.IMessagePart)
+
+ def __init__(self, fdoc, bdoc):
+ self._fdoc = fdoc
+ self._bdoc = bdoc
+
+ def getSize(self):
+ return len(self._bdoc.content[fields.BODY_KEY])
+
+ def getBodyFile(self):
+ fd = StringIO.StringIO()
+
+ if self._bdoc:
+ body = self._bdoc.content[fields.BODY_KEY]
+ else:
+ body = ""
+ charset = self._get_charset(body)
+ try:
+ body = body.encode(charset)
+ except (UnicodeEncodeError, UnicodeDecodeError) as e:
+ logger.error("Unicode error {0}".format(e))
+ body = body.encode(charset, 'replace')
+ fd.write(body)
+ fd.seek(0)
+ return fd
+
+ @memoized_method
+ def _get_charset(self, stuff):
+ return get_email_charset(unicode(stuff))
+
+ def getHeaders(self, negate, *names):
+ return {}
+
+ def isMultipart(self):
+ return False
+
+ def getSubPart(self, part):
+ return None
+
+
+class MessageAttachment(object):
+
+ implements(imap4.IMessagePart)
+
+ def __init__(self, msg):
+ """
+ Initializes the messagepart with a Message instance.
+ :param msg: a message instance
+ :type msg: Message
+ """
+ self._msg = msg
+
+ def getSize(self):
+ """
+ Return the total size, in octets, of this message part.
+
+ :return: size of the message, in octets
+ :rtype: int
+ """
+ if not self._msg:
+ return 0
+ return len(self._msg.as_string())
+
+ def getBodyFile(self):
+ """
+ Retrieve a file object containing only the body of this message.
+
+ :return: file-like object opened for reading
+ :rtype: StringIO
+ """
+ fd = StringIO.StringIO()
+ if self._msg:
+ body = self._msg.get_payload()
+ else:
+ logger.debug("Empty message!")
+ body = ""
+
+ # XXX should only do the dance if we're sure it's
+ # content/text-plain!!!
+ #charset = self._get_charset(body)
+ #try:
+ #body = body.encode(charset)
+ #except (UnicodeEncodeError, UnicodeDecodeError) as e:
+ #logger.error("Unicode error {0}".format(e))
+ #body = body.encode(charset, 'replace')
+ fd.write(body)
+ fd.seek(0)
+ return fd
+
+ @memoized_method
+ def _get_charset(self, stuff):
+ # TODO put in a common class with LeapMessage
+ """
+ Gets (guesses?) the charset of a payload.
+
+ :param stuff: the stuff to guess about.
+ :type stuff: basestring
+ :returns: charset
+ """
+ # XXX existential doubt 1. wouldn't be smarter to
+ # peek into the mail headers?
+ # XXX existential doubt 2. shouldn't we make the scope
+ # of the decorator somewhat more persistent?
+ # ah! yes! and put memory bounds.
+ return get_email_charset(unicode(stuff))
+
+ def getHeaders(self, negate, *names):
+ """
+ Retrieve a group of message headers.
+
+ :param names: The names of the headers to retrieve or omit.
+ :type names: tuple of str
+
+ :param negate: If True, indicates that the headers listed in names
+ should be omitted from the return value, rather
+ than included.
+ :type negate: bool
+
+ :return: A mapping of header field names to header field values
+ :rtype: dict
+ """
+ if not self._msg:
+ return {}
+ headers = dict(self._msg.items())
+ names = map(lambda s: s.upper(), names)
+ if negate:
+ cond = lambda key: key.upper() not in names
+ else:
+ cond = lambda key: key.upper() in names
+
+ # unpack and filter original dict by negate-condition
+ filter_by_cond = [
+ map(str, (key, val)) for
+ key, val in headers.items()
+ if cond(key)]
+ return dict(filter_by_cond)
+
+ def isMultipart(self):
+ """
+ Return True if this message is multipart.
+ """
+ return self._msg.is_multipart()
+
+ def getSubPart(self, part):
+ """
+ Retrieve a MIME submessage
+
+ :type part: C{int}
+ :param part: The number of the part to retrieve, indexed from 0.
+ :raise IndexError: Raised if the specified part does not exist.
+ :raise TypeError: Raised if this message is not multipart.
+ :rtype: Any object implementing C{IMessagePart}.
+ :return: The specified sub-part.
+ """
+ return self._msg.get_payload()
+
+
class LeapMessage(fields, MailParser, MBoxParser):
implements(imap4.IMessage)
@@ -59,25 +234,21 @@ class LeapMessage(fields, MailParser, MBoxParser):
self._soledad = soledad
self._uid = int(uid)
self._mbox = self._parse_mailbox_name(mbox)
- self._chash = None
- self.__cdoc = None
+ self.__chash = None
+ self.__bdoc = None
@property
def _fdoc(self):
"""
An accessor to the flags document.
"""
- return self._get_flags_doc()
-
- @property
- def _cdoc(self):
- """
- An accessor to the content document.
- """
- if not self.__cdoc:
- self.__cdoc = self._get_content_doc()
- return self.__cdoc
+ if all(map(bool, (self._uid, self._mbox))):
+ fdoc = self._get_flags_doc()
+ if fdoc:
+ self.__chash = fdoc.content.get(
+ fields.CONTENT_HASH_KEY, None)
+ return fdoc
@property
def _chash(self):
@@ -86,7 +257,26 @@ class LeapMessage(fields, MailParser, MBoxParser):
"""
if not self._fdoc:
return None
- return self._fdoc.content.get(fields.CONTENT_HASH_KEY, None)
+ if not self.__chash and self._fdoc:
+ self.__chash = self._fdoc.content.get(
+ fields.CONTENT_HASH_KEY, None)
+ return self.__chash
+
+ @property
+ def _hdoc(self):
+ """
+ An accessor to the headers document.
+ """
+ return self._get_headers_doc()
+
+ @property
+ def _bdoc(self):
+ """
+ An accessor to the body document.
+ """
+ if not self.__bdoc:
+ self.__bdoc = self._get_body_doc()
+ return self.__bdoc
# IMessage implementation
@@ -110,9 +300,9 @@ class LeapMessage(fields, MailParser, MBoxParser):
return []
flags = []
- flag_doc = self._fdoc
- if flag_doc:
- flags = flag_doc.content.get(self.FLAGS_KEY, None)
+ fdoc = self._fdoc
+ if fdoc:
+ flags = fdoc.content.get(self.FLAGS_KEY, None)
if flags:
flags = map(str, flags)
return tuple(flags)
@@ -180,7 +370,7 @@ class LeapMessage(fields, MailParser, MBoxParser):
:rtype: C{str}
:return: An RFC822-formatted date string.
"""
- return str(self._cdoc.content.get(self.DATE_KEY, ''))
+ return str(self._hdoc.content.get(self.DATE_KEY, ''))
#
# IMessagePart
@@ -197,25 +387,38 @@ class LeapMessage(fields, MailParser, MBoxParser):
:rtype: StringIO
"""
fd = StringIO.StringIO()
+ bdoc = self._bdoc
+ if bdoc:
+ body = self._bdoc.content.get(self.BODY_KEY, "")
+ else:
+ body = ""
- cdoc = self._cdoc
- content = cdoc.content.get(self.RAW_KEY, '')
- charset = get_email_charset(
- unicode(cdoc.content.get(self.RAW_KEY, '')))
+ charset = self._get_charset(body)
try:
- content = content.encode(charset)
+ body = body.encode(charset)
except (UnicodeEncodeError, UnicodeDecodeError) as e:
logger.error("Unicode error {0}".format(e))
- content = content.encode(charset, 'replace')
-
- raw = self._get_raw_msg()
- msg = self._get_parsed_msg(raw)
- body = msg.get_payload()
+ body = body.encode(charset, 'replace')
fd.write(body)
- # XXX SHOULD use a separate BODY FIELD ...
fd.seek(0)
return fd
+ @memoized_method
+ def _get_charset(self, stuff):
+ """
+ Gets (guesses?) the charset of a payload.
+
+ :param stuff: the stuff to guess about.
+ :type stuff: basestring
+ :returns: charset
+ """
+ # XXX existential doubt 1. wouldn't be smarter to
+ # peek into the mail headers?
+ # XXX existential doubt 2. shouldn't we make the scope
+ # of the decorator somewhat more persistent?
+ # ah! yes! and put memory bounds.
+ return get_email_charset(unicode(stuff))
+
def getSize(self):
"""
Return the total size, in octets, of this message.
@@ -223,19 +426,17 @@ class LeapMessage(fields, MailParser, MBoxParser):
:return: size of the message, in octets
:rtype: int
"""
- size = self._cdoc.content.get(self.SIZE_KEY, False)
+ size = None
+ if self._fdoc:
+ size = self._fdoc.content.get(self.SIZE_KEY, False)
+ else:
+ logger.warning("No FLAGS doc for %s:%s" % (self._mbox,
+ self._uid))
if not size:
# XXX fallback, should remove when all migrated.
size = self.getBodyFile().len
return size
- def _get_headers(self):
- """
- Return the headers dict stored in this message document.
- """
- # XXX get from the headers doc
- return self._cdoc.content.get(self.HEADERS_KEY, {})
-
def getHeaders(self, negate, *names):
"""
Retrieve a group of message headers.
@@ -252,26 +453,49 @@ class LeapMessage(fields, MailParser, MBoxParser):
:rtype: dict
"""
headers = self._get_headers()
+ if not headers:
+ return {'content-type': ''}
names = map(lambda s: s.upper(), names)
if negate:
cond = lambda key: key.upper() not in names
else:
cond = lambda key: key.upper() in names
+ head = copy.deepcopy(dict(headers.items()))
+
+ # twisted imap server expects headers to be lowercase
+ head = dict(
+ map(str, (key, value)) if key.lower() != "content-type"
+ else map(str, (key.lower(), value))
+ for (key, value) in head.items())
+
# unpack and filter original dict by negate-condition
- filter_by_cond = [
- map(str, (key, val)) for
- key, val in headers.items()
- if cond(key)]
+ filter_by_cond = [(key, val) for key, val in head.items() if cond(key)]
return dict(filter_by_cond)
+ def _get_headers(self):
+ """
+ Return the headers dict for this message.
+ """
+ if self._hdoc is not None:
+ return self._hdoc.content.get(self.HEADERS_KEY, {})
+ else:
+ logger.warning(
+ "No HEADERS doc for msg %s:%s" % (
+ self._mbox,
+ self._uid))
+
def isMultipart(self):
"""
Return True if this message is multipart.
"""
- if self._cdoc:
- retval = self._fdoc.content.get(self.MULTIPART_KEY, False)
- return retval
+ if self._fdoc:
+ return self._fdoc.content.get(self.MULTIPART_KEY, False)
+ else:
+ logger.warning(
+ "No FLAGS doc for msg %s:%s" % (
+ self.mbox,
+ self.uid))
def getSubPart(self, part):
"""
@@ -284,12 +508,22 @@ class LeapMessage(fields, MailParser, MBoxParser):
:rtype: Any object implementing C{IMessagePart}.
:return: The specified sub-part.
"""
+ logger.debug("Getting subpart: %s" % part)
if not self.isMultipart():
raise TypeError
- msg = self._get_parsed_msg()
- # XXX should wrap IMessagePart
- return msg.get_payload()[part]
+ if part == 0:
+ # Let's get the first part, which
+ # is really the body.
+ return MessageBody(self._fdoc, self._bdoc)
+
+ attach_doc = self._get_attachment_doc(part)
+ if not attach_doc:
+ # so long and thanks for all the fish
+ logger.debug("...not today")
+ raise IndexError
+ msg_part = self._get_parsed_msg(attach_doc.content[self.RAW_KEY])
+ return MessageAttachment(msg_part)
#
# accessors
@@ -301,32 +535,87 @@ class LeapMessage(fields, MailParser, MBoxParser):
message.
"""
flag_docs = self._soledad.get_from_index(
- SoledadBackedAccount.TYPE_MBOX_UID_IDX,
+ fields.TYPE_MBOX_UID_IDX,
fields.TYPE_FLAGS_VAL, self._mbox, str(self._uid))
- flag_doc = flag_docs[0] if flag_docs else None
- return flag_doc
+ return first(flag_docs)
- def _get_content_doc(self):
+ def _get_headers_doc(self):
"""
- Return the document that keeps the flags for this
+ Return the document that keeps the headers for this
+ message.
+ """
+ head_docs = self._soledad.get_from_index(
+ fields.TYPE_C_HASH_IDX,
+ fields.TYPE_HEADERS_VAL, str(self._chash))
+ return first(head_docs)
+
+ def _get_body_doc(self):
+ """
+ Return the document that keeps the body for this
message.
"""
- cont_docs = self._soledad.get_from_index(
- SoledadBackedAccount.TYPE_HASH_IDX,
- fields.TYPE_MESSAGE_VAL, self._content_hash, str(self._uid))
- cont_doc = cont_docs[0] if cont_docs else None
- return cont_doc
+ body_docs = self._soledad.get_from_index(
+ fields.TYPE_C_HASH_IDX,
+ fields.TYPE_MESSAGE_VAL, str(self._chash))
+ return first(body_docs)
+
+ def _get_num_parts(self):
+ """
+ Return the number of parts for a multipart message.
+ """
+ if not self.isMultipart():
+ raise TypeError(
+ "Tried to get num parts in a non-multipart message")
+ if not self._hdoc:
+ return None
+ return self._hdoc.content.get(fields.NUM_PARTS_KEY, 2)
+
+ def _get_attachment_doc(self, part):
+ """
+ Return the document that keeps the headers for this
+ message.
+
+ :param part: the part number for the multipart message.
+ :type part: int
+ """
+ if not self._hdoc:
+ return None
+ try:
+ phash = self._hdoc.content[self.PARTS_MAP_KEY][str(part)]
+ except KeyError:
+ # this is the remnant of a debug session until
+ # I found that the index is actually a string...
+ # It should be safe to just raise the KeyError now,
+ # but leaving it here while the blood is fresh...
+ logger.warning("We expected a phash in the "
+ "index %s, but noone found" % (part, ))
+ logger.debug(self._hdoc.content[self.PARTS_MAP_KEY])
+ return None
+ attach_docs = self._soledad.get_from_index(
+ fields.TYPE_P_HASH_IDX,
+ fields.TYPE_ATTACHMENT_VAL, str(phash))
+
+ # The following is true for the fist owner.
+ # We could use this relationship to flag the "owner"
+ # and orphan when we delete it.
+
+ #attach_docs = self._soledad.get_from_index(
+ #fields.TYPE_C_HASH_PART_IDX,
+ #fields.TYPE_ATTACHMENT_VAL, str(self._chash), str(part))
+ return first(attach_docs)
def _get_raw_msg(self):
"""
Return the raw msg.
:rtype: basestring
"""
- return self._cdoc.content.get(self.RAW_KEY, '')
+ # TODO deprecate this.
+ return self._bdoc.content.get(self.RAW_KEY, '')
def __getitem__(self, key):
"""
- Return the content of the message document.
+ Return an item from the content of the flags document,
+ for convenience.
:param key: The key
:type key: str
@@ -334,14 +623,73 @@ class LeapMessage(fields, MailParser, MBoxParser):
:return: The content value indexed by C{key} or None
:rtype: str
"""
- return self._cdoc.content.get(key, None)
+ return self._fdoc.content.get(key, None)
+
+ # setters
+
+ # XXX to be used in the messagecopier interface?!
+
+ def set_uid(self, uid):
+ """
+ Set new uid for this message.
+
+ :param uid: the new uid
+ :type uid: basestring
+ """
+ # XXX dangerous! lock?
+ self._uid = uid
+ d = self._fdoc
+ d.content[self.UID_KEY] = uid
+ self._soledad.put_doc(d)
+
+ def set_mbox(self, mbox):
+ """
+ Set new mbox for this message.
+
+ :param mbox: the new mbox
+ :type mbox: basestring
+ """
+ # XXX dangerous! lock?
+ self._mbox = mbox
+ d = self._fdoc
+ d.content[self.MBOX_KEY] = mbox
+ self._soledad.put_doc(d)
+
+ # destructor
+
+ @deferred
+ def remove(self):
+ """
+ Remove all docs associated with this message.
+ """
+ # XXX this would ve more efficient if we can just pass
+ # a sequence of uids.
+
+ # XXX For the moment we are only removing the flags and headers
+ # docs. The rest we leave there polluting your hard disk,
+ # until we think about a good way of deorphaning.
+ # Maybe a crawler of unreferenced docs.
+
+ fd = self._get_flags_doc()
+ hd = self._get_headers_doc()
+ #bd = self._get_body_doc()
+ #docs = [fd, hd, bd]
+
+ docs = [fd, hd]
+
+ #for pn in range(self._get_num_parts()[1:]):
+ #ad = self._get_attachment_doc(pn)
+ #docs.append(ad)
+
+ for d in filter(None, docs):
+ self._soledad.delete_doc(d)
def does_exist(self):
"""
- Return True if there is actually a message for this
+ Return True if there is actually a flags message for this
UID and mbox.
"""
- return bool(self._fdoc)
+ return self._fdoc is not None
SoledadWriterPayload = namedtuple(
@@ -349,6 +697,8 @@ SoledadWriterPayload = namedtuple(
SoledadWriterPayload.CREATE = 1
SoledadWriterPayload.PUT = 2
+SoledadWriterPayload.BODY_CREATE = 3
+SoledadWriterPayload.ATTACHMENT_CREATE = 4
class SoledadDocWriter(object):
@@ -378,20 +728,98 @@ class SoledadDocWriter(object):
empty = queue.empty()
while not empty:
item = queue.get()
+ call = None
+ payload = item.payload
+
if item.mode == SoledadWriterPayload.CREATE:
call = self._soledad.create_doc
+ elif item.mode == SoledadWriterPayload.BODY_CREATE:
+ if not self._body_does_exist(payload):
+ call = self._soledad.create_doc
+ elif item.mode == SoledadWriterPayload.ATTACHMENT_CREATE:
+ if not self._attachment_does_exist(payload):
+ call = self._soledad.create_doc
elif item.mode == SoledadWriterPayload.PUT:
call = self._soledad.put_doc
- # should handle errors
- try:
- call(item.payload)
- except u1db_errors.RevisionConflict as exc:
- logger.error("Error: %r" % (exc,))
- raise exc
+ # XXX delete?
+
+ if call:
+ # should handle errors
+ try:
+ call(item.payload)
+ except u1db_errors.RevisionConflict as exc:
+ logger.error("Error: %r" % (exc,))
+ raise exc
empty = queue.empty()
+ """
+ Message deduplication.
+
+ We do a query for the content hashes before writing to our beloved
+ slcipher backend of Soledad. This means, by now, that:
+
+ 1. We will not store the same attachment twice, only the hash of it.
+ 2. We will not store the same message body twice, only the hash of it.
+
+ The first case is useful if you are always receiving the same old memes
+ from unwary friends that still have not discovered that 4chan is the
+ generator of the internet. The second will save your day if you have
+ initiated session with the same account in two different machines. I also
+ wonder why would you do that, but let's respect each other choices, like
+ with the religious celebrations, and assume that one day we'll be able
+ to run Bitmask in completely free phones. Yes, I mean that, the whole GSM
+ Stack.
+ """
+
+ def _body_does_exist(self, doc):
+ """
+ Check whether we already have a body payload with this hash in our
+ database.
+
+ :param doc: tentative body document
+ :type doc: dict
+ :returns: True if that happens, False otherwise.
+ """
+ if not doc:
+ return False
+ chash = doc[fields.CONTENT_HASH_KEY]
+ body_docs = self._soledad.get_from_index(
+ fields.TYPE_C_HASH_IDX,
+ fields.TYPE_MESSAGE_VAL, str(chash))
+ if not body_docs:
+ return False
+ if len(body_docs) != 1:
+ logger.warning("Found more than one copy of chash %s!"
+ % (chash,))
+ logger.debug("Found body doc with that hash! Skipping save!")
+ return True
+
+ def _attachment_does_exist(self, doc):
+ """
+ Check whether we already have an attachment payload with this hash
+ in our database.
+
+ :param doc: tentative body document
+ :type doc: dict
+ :returns: True if that happens, False otherwise.
+ """
+ if not doc:
+ return False
+ phash = doc[fields.PAYLOAD_HASH_KEY]
+ attach_docs = self._soledad.get_from_index(
+ fields.TYPE_P_HASH_IDX,
+ fields.TYPE_ATTACHMENT_VAL, str(phash))
+ if not attach_docs:
+ return False
+
+ if len(attach_docs) != 1:
+ logger.warning("Found more than one copy of phash %s!"
+ % (phash,))
+ logger.debug("Found attachment doc with that hash! Skipping save!")
+ return True
+
class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
"""
@@ -402,35 +830,62 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
database.
"""
# XXX this should be able to produce a MessageSet methinks
-
- EMPTY_MSG = {
- fields.TYPE_KEY: fields.TYPE_MESSAGE_VAL,
- fields.UID_KEY: 1,
- fields.MBOX_KEY: fields.INBOX_VAL,
-
- fields.SUBJECT_KEY: "",
- fields.DATE_KEY: "",
- fields.RAW_KEY: "",
-
- # XXX should separate headers into another doc
- fields.HEADERS_KEY: {},
+ # could validate these kinds of objects turning them
+ # into a template for the class.
+ FLAGS_DOC = "FLAGS"
+ HEADERS_DOC = "HEADERS"
+ ATTACHMENT_DOC = "ATTACHMENT"
+ BODY_DOC = "BODY"
+
+ templates = {
+
+ FLAGS_DOC: {
+ fields.TYPE_KEY: fields.TYPE_FLAGS_VAL,
+ fields.UID_KEY: 1,
+ fields.MBOX_KEY: fields.INBOX_VAL,
+
+ fields.SEEN_KEY: False,
+ fields.RECENT_KEY: True,
+ fields.FLAGS_KEY: [],
+ fields.MULTIPART_KEY: False,
+ fields.SIZE_KEY: 0
+ },
+
+ HEADERS_DOC: {
+ fields.TYPE_KEY: fields.TYPE_HEADERS_VAL,
+ fields.CONTENT_HASH_KEY: "",
+
+ fields.HEADERS_KEY: {},
+ fields.NUM_PARTS_KEY: 0,
+ fields.PARTS_MAP_KEY: {},
+ fields.DATE_KEY: "",
+ fields.SUBJECT_KEY: ""
+ },
+
+ ATTACHMENT_DOC: {
+ fields.TYPE_KEY: fields.TYPE_ATTACHMENT_VAL,
+ fields.PART_NUMBER_KEY: 0,
+ fields.CONTENT_HASH_KEY: "",
+ fields.PAYLOAD_HASH_KEY: "",
+
+ fields.RAW_KEY: ""
+ },
+
+ BODY_DOC: {
+ fields.TYPE_KEY: fields.TYPE_MESSAGE_VAL,
+ fields.CONTENT_HASH_KEY: "",
+
+ fields.BODY_KEY: "",
+
+ # this should not be needed,
+ # but let's keep the raw msg for some time
+ # until we are sure we can reconstruct
+ # the original msg from our disection.
+ fields.RAW_KEY: "",
+
+ }
}
- EMPTY_FLAGS = {
- fields.TYPE_KEY: fields.TYPE_FLAGS_VAL,
- fields.UID_KEY: 1,
- fields.MBOX_KEY: fields.INBOX_VAL,
-
- fields.FLAGS_KEY: [],
- fields.SEEN_KEY: False,
- fields.RECENT_KEY: True,
- fields.MULTIPART_KEY: False,
- }
-
- # get from SoledadBackedAccount the needed index-related constants
- INDEXES = SoledadBackedAccount.INDEXES
- TYPE_IDX = SoledadBackedAccount.TYPE_IDX
-
def __init__(self, mbox=None, soledad=None):
"""
Constructor for MessageCollection.
@@ -465,23 +920,16 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
SoledadDocWriter(soledad),
period=0.05)
- def _get_empty_msg(self):
+ def _get_empty_doc(self, _type=FLAGS_DOC):
"""
- Returns an empty message.
-
- :return: a dict containing a default empty message
+ Returns an empty doc for storing different message parts.
+ Defaults to returning a template for a flags document.
+ :return: a dict with the template
:rtype: dict
"""
- return copy.deepcopy(self.EMPTY_MSG)
-
- def _get_empty_flags_doc(self):
- """
- Returns an empty doc for storing flags.
-
- :return:
- :rtype:
- """
- return copy.deepcopy(self.EMPTY_FLAGS)
+ if not _type in self.templates.keys():
+ raise TypeError("Improper type passed to _get_empty_doc")
+ return copy.deepcopy(self.templates[_type])
@deferred
def add_msg(self, raw, subject=None, flags=None, date=None, uid=1):
@@ -509,52 +957,107 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
flags = tuple()
leap_assert_type(flags, tuple)
- content_doc = self._get_empty_msg()
- flags_doc = self._get_empty_flags_doc()
-
- content_doc[self.MBOX_KEY] = self.mbox
- flags_doc[self.MBOX_KEY] = self.mbox
- # ...should get a sanity check here.
- content_doc[self.UID_KEY] = uid
- flags_doc[self.UID_KEY] = uid
-
- if flags:
- flags_doc[self.FLAGS_KEY] = map(self._stringify, flags)
- flags_doc[self.SEEN_KEY] = self.SEEN_FLAG in flags
+ # docs for flags, headers, and body
+ fd, hd, bd = map(
+ lambda t: self._get_empty_doc(t),
+ (self.FLAGS_DOC, self.HEADERS_DOC, self.BODY_DOC))
msg = self._get_parsed_msg(raw)
headers = dict(msg)
-
- logger.debug("adding. is multipart:%s" % msg.is_multipart())
- flags_doc[self.MULTIPART_KEY] = msg.is_multipart()
- # XXX get lower case for keys?
- # XXX get headers doc
- content_doc[self.HEADERS_KEY] = headers
- # set subject based on message headers and eventually replace by
- # subject given as param
- if self.SUBJECT_FIELD in headers:
- content_doc[self.SUBJECT_KEY] = headers[self.SUBJECT_FIELD]
- if subject is not None:
- content_doc[self.SUBJECT_KEY] = subject
-
- # XXX could separate body into its own doc
- # but should also separate multiparts
- # that should be wrapped in MessagePart
- content_doc[self.RAW_KEY] = self._stringify(raw)
- content_doc[self.SIZE_KEY] = len(raw)
-
+ raw_str = msg.as_string()
+ chash = self._get_hash(msg)
+ multi = msg.is_multipart()
+
+ attaches = []
+ inner_parts = []
+
+ if multi:
+ # XXX should walk down recursively
+ # in a better way. but fixing this quick
+ # to have an rc.
+ # XXX should pick the content-type in txt
+ body = first(msg.get_payload()).get_payload()
+ if isinstance(body, list):
+ # allowing one nesting level for now...
+ body, rest = body[0].get_payload(), body[1:]
+ for p in rest:
+ inner_parts.append(p)
+ else:
+ body = msg.get_payload()
+ logger.debug("adding msg (multipart:%s)" % multi)
+
+ # flags doc ---------------------------------------
+ fd[self.MBOX_KEY] = self.mbox
+ fd[self.UID_KEY] = uid
+ fd[self.CONTENT_HASH_KEY] = chash
+ fd[self.MULTIPART_KEY] = multi
+ fd[self.SIZE_KEY] = len(raw_str)
+ if flags:
+ fd[self.FLAGS_KEY] = map(self._stringify, flags)
+ fd[self.SEEN_KEY] = self.SEEN_FLAG in flags
+ fd[self.RECENT_KEY] = self.RECENT_FLAG in flags
+
+ # headers doc ----------------------------------------
+ hd[self.CONTENT_HASH_KEY] = chash
+ hd[self.HEADERS_KEY] = headers
+ if not subject and self.SUBJECT_FIELD in headers:
+ hd[self.SUBJECT_KEY] = headers[self.SUBJECT_FIELD]
+ else:
+ hd[self.SUBJECT_KEY] = subject
if not date and self.DATE_FIELD in headers:
- content_doc[self.DATE_KEY] = headers[self.DATE_FIELD]
+ hd[self.DATE_KEY] = headers[self.DATE_FIELD]
else:
- content_doc[self.DATE_KEY] = date
-
- logger.debug('enqueuing message for write')
-
+ hd[self.DATE_KEY] = date
+ if multi:
+ hd[self.NUM_PARTS_KEY] = len(msg.get_payload())
+
+ # body doc
+ bd[self.CONTENT_HASH_KEY] = chash
+ bd[self.BODY_KEY] = body
+ # in an ideal world, we would not need to save a copy of the
+ # raw message. But we'll keep it until we can be sure that
+ # we can rebuild the original message from the parts.
+ bd[self.RAW_KEY] = raw_str
+
+ docs = [fd, hd]
+
+ # attachment docs
+ if multi:
+ outer_parts = msg.get_payload()
+ parts = outer_parts + inner_parts
+
+ # skip first part, we already got it in body
+ to_attach = ((i, m) for i, m in enumerate(parts) if i > 0)
+ for index, part_msg in to_attach:
+ att_doc = self._get_empty_doc(self.ATTACHMENT_DOC)
+ att_doc[self.PART_NUMBER_KEY] = index
+ att_doc[self.CONTENT_HASH_KEY] = chash
+ phash = self._get_hash(part_msg)
+ att_doc[self.PAYLOAD_HASH_KEY] = phash
+ att_doc[self.RAW_KEY] = part_msg.as_string()
+
+ # keep a pointer to the payload hash in the
+ # headers doc, under the parts_map
+ hd[self.PARTS_MAP_KEY][str(index)] = phash
+ attaches.append(att_doc)
+
+ # Saving ... -------------------------------
+ # ok, there we go...
+ logger.debug('enqueuing message docs for write')
ptuple = SoledadWriterPayload
+
+ # first, regular docs: flags and headers
+ for doc in docs:
+ self.soledad_writer.put(ptuple(
+ mode=ptuple.CREATE, payload=doc))
+ # second, try to create body doc.
self.soledad_writer.put(ptuple(
- mode=ptuple.CREATE, payload=content_doc))
- self.soledad_writer.put(ptuple(
- mode=ptuple.CREATE, payload=flags_doc))
+ mode=ptuple.BODY_CREATE, payload=bd))
+ # and last, but not least, try to create
+ # attachment docs if not already there.
+ for at in attaches:
+ self.soledad_writer.put(ptuple(
+ mode=ptuple.ATTACHMENT_CREATE, payload=at))
def remove(self, msg):
"""
@@ -563,8 +1066,6 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
:param msg: a Leapmessage instance
:type msg: LeapMessage
"""
- # XXX remove
- #self._soledad.delete_doc(msg)
msg.remove()
# getters
@@ -596,14 +1097,14 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
:rtype: list of SoledadDocument
"""
if _type not in fields.__dict__.values():
- raise TypeError("Wrong type passed to get_all")
+ raise TypeError("Wrong type passed to get_all_docs")
if sameProxiedObjects(self._soledad, None):
logger.warning('Tried to get messages but soledad is None!')
return []
all_docs = [doc for doc in self._soledad.get_from_index(
- SoledadBackedAccount.TYPE_MBOX_IDX,
+ fields.TYPE_MBOX_IDX,
_type, self.mbox)]
# inneficient, but first let's grok it and then
@@ -618,8 +1119,8 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
"""
all_uids = (doc.content[self.UID_KEY] for doc in
self._soledad.get_from_index(
- SoledadBackedAccount.TYPE_MBOX_IDX,
- self.TYPE_FLAGS_VAL, self.mbox))
+ fields.TYPE_MBOX_IDX,
+ fields.TYPE_FLAGS_VAL, self.mbox))
return (u for u in sorted(all_uids))
def count(self):
@@ -629,7 +1130,7 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
:rtype: int
"""
count = self._soledad.get_count_from_index(
- SoledadBackedAccount.TYPE_MBOX_IDX,
+ fields.TYPE_MBOX_IDX,
fields.TYPE_FLAGS_VAL, self.mbox)
return count
@@ -645,8 +1146,8 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
"""
return (doc.content[self.UID_KEY] for doc in
self._soledad.get_from_index(
- SoledadBackedAccount.TYPE_MBOX_SEEN_IDX,
- self.TYPE_FLAGS_VAL, self.mbox, '0'))
+ fields.TYPE_MBOX_SEEN_IDX,
+ fields.TYPE_FLAGS_VAL, self.mbox, '0'))
def count_unseen(self):
"""
@@ -656,8 +1157,8 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
:rtype: int
"""
count = self._soledad.get_count_from_index(
- SoledadBackedAccount.TYPE_MBOX_SEEN_IDX,
- self.TYPE_FLAGS_VAL, self.mbox, '0')
+ fields.TYPE_MBOX_SEEN_IDX,
+ fields.TYPE_FLAGS_VAL, self.mbox, '0')
return count
def get_unseen(self):
@@ -681,8 +1182,8 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
"""
return (doc.content[self.UID_KEY] for doc in
self._soledad.get_from_index(
- SoledadBackedAccount.TYPE_MBOX_RECT_IDX,
- self.TYPE_FLAGS_VAL, self.mbox, '1'))
+ fields.TYPE_MBOX_RECT_IDX,
+ fields.TYPE_FLAGS_VAL, self.mbox, '1'))
def get_recent(self):
"""
@@ -702,8 +1203,8 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
:rtype: int
"""
count = self._soledad.get_count_from_index(
- SoledadBackedAccount.TYPE_MBOX_RECT_IDX,
- self.TYPE_FLAGS_VAL, self.mbox, '1')
+ fields.TYPE_MBOX_RECT_IDX,
+ fields.TYPE_FLAGS_VAL, self.mbox, '1')
return count
def __len__(self):
@@ -731,5 +1232,5 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser):
return u"<MessageCollection: mbox '%s' (%s)>" % (
self.mbox, self.count())
- # XXX should implement __eq__ also !!! --- use a hash
- # of content for that, will be used for dedup.
+ # XXX should implement __eq__ also !!!
+ # --- use the content hash for that, will be used for dedup.
diff --git a/src/leap/mail/imap/parser.py b/src/leap/mail/imap/parser.py
index 1ae19c0..306dcf0 100644
--- a/src/leap/mail/imap/parser.py
+++ b/src/leap/mail/imap/parser.py
@@ -19,10 +19,14 @@ Mail parser mixins.
"""
import cStringIO
import StringIO
+import hashlib
import re
+from email.message import Message
from email.parser import Parser
+from leap.common.check import leap_assert_type
+
class MailParser(object):
"""
@@ -34,16 +38,30 @@ class MailParser(object):
"""
self._parser = Parser()
- def _get_parsed_msg(self, raw):
+ def _get_parsed_msg(self, raw, headersonly=False):
"""
Return a parsed Message.
:param raw: the raw string to parse
:type raw: basestring, or StringIO object
+
+ :param headersonly: True for parsing only the headers.
+ :type headersonly: bool
"""
- msg = self._get_parser_fun(raw)(raw, True)
+ msg = self._get_parser_fun(raw)(raw, headersonly=headersonly)
return msg
+ def _get_hash(self, msg):
+ """
+ Returns a hash of the string representation of the raw message,
+ suitable for indexing the inmutable pieces.
+
+ :param msg: a Message object
+ :type msg: Message
+ """
+ leap_assert_type(msg, Message)
+ return hashlib.sha256(msg.as_string()).hexdigest()
+
def _get_parser_fun(self, o):
"""
Retunn the proper parser function for an object.
@@ -67,6 +85,8 @@ class MailParser(object):
:param o: object
:type o: object
"""
+ # XXX Maybe we don't need no more, we're using
+ # msg.as_string()
if isinstance(o, (cStringIO.OutputType, StringIO.StringIO)):
return o.getvalue()
else: