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# Copyright (C) 2011-2012 Patrick Totzke <patricktotzke@gmail.com>
# This file is released under the GNU GPL, version 3 or a later revision.
# For further details see the COPYING file
import argparse
import datetime
import email
import glob
import logging
import os
import re
import tempfile
from twisted.internet.defer import inlineCallbacks
from . import Command, registerCommand
from . import globals
from .utils import get_keys
from .. import buffers
from .. import commands
from .. import crypto
from ..account import SendingMailFailed, StoreMailError
from ..db.errors import DatabaseError
from ..errors import GPGProblem
from ..helper import email_as_string
from ..helper import string_decode
from ..settings import settings
from ..utils.booleanaction import BooleanAction
MODE = 'envelope'
@registerCommand(MODE, 'attach', arguments=[
(['path'], {'help': 'file(s) to attach (accepts wildcads)'})])
class AttachCommand(Command):
"""attach files to the mail"""
repeatable = True
def __init__(self, path=None, **kwargs):
"""
:param path: files to attach (globable string)
:type path: str
"""
Command.__init__(self, **kwargs)
self.path = path
def apply(self, ui):
envelope = ui.current_buffer.envelope
if self.path: # TODO: not possible, otherwise argparse error before
files = [g for g in glob.glob(os.path.expanduser(self.path))
if os.path.isfile(g)]
if not files:
ui.notify('no matches, abort')
return
else:
ui.notify('no files specified, abort')
return
logging.info("attaching: %s", files)
for path in files:
envelope.attach(path)
ui.current_buffer.rebuild()
@registerCommand(MODE, 'unattach', arguments=[
(['hint'], {'nargs': '?', 'help': 'which attached file to remove'}),
])
class UnattachCommand(Command):
"""remove attachments from current envelope"""
repeatable = True
def __init__(self, hint=None, **kwargs):
"""
:param hint: which attached file to remove
:type hint: str
"""
Command.__init__(self, **kwargs)
self.hint = hint
def apply(self, ui):
envelope = ui.current_buffer.envelope
if self.hint is not None:
for a in envelope.attachments:
if self.hint in a.get_filename():
envelope.attachments.remove(a)
else:
envelope.attachments = []
ui.current_buffer.rebuild()
@registerCommand(MODE, 'refine', arguments=[
(['key'], {'help': 'header to refine'})])
class RefineCommand(Command):
"""prompt to change the value of a header"""
def __init__(self, key='', **kwargs):
"""
:param key: key of the header to change
:type key: str
"""
Command.__init__(self, **kwargs)
self.key = key
def apply(self, ui):
value = ui.current_buffer.envelope.get(self.key, '')
cmdstring = 'set %s %s' % (self.key, value)
ui.apply_command(globals.PromptCommand(cmdstring))
@registerCommand(MODE, 'save')
class SaveCommand(Command):
"""save draft"""
def apply(self, ui):
envelope = ui.current_buffer.envelope
# determine account to use
_, saddr = email.Utils.parseaddr(envelope.get('From'))
account = settings.get_account_by_address(saddr)
if account is None:
if not settings.get_accounts():
ui.notify('no accounts set.', priority='error')
return
else:
account = settings.get_accounts()[0]
if account.draft_box is None:
ui.notify('abort: account <%s> has no draft_box set.' % saddr,
priority='error')
return
mail = envelope.construct_mail()
# store mail locally
# add Date header
mail['Date'] = email.Utils.formatdate(localtime=True)
path = account.store_draft_mail(email_as_string(mail))
msg = 'draft saved successfully'
# add mail to index if maildir path available
if path is not None:
ui.notify(msg + ' to %s' % path)
logging.debug('adding new mail to index')
try:
ui.dbman.add_message(path, account.draft_tags)
ui.apply_command(globals.FlushCommand())
ui.apply_command(commands.globals.BufferCloseCommand())
except DatabaseError as e:
logging.error(e.message)
ui.notify('could not index message:\n%s' % e.message,
priority='error',
block=True)
else:
ui.apply_command(commands.globals.BufferCloseCommand())
@registerCommand(MODE, 'send')
class SendCommand(Command):
"""send mail"""
def __init__(self, mail=None, envelope=None, **kwargs):
"""
:param mail: email to send
:type email: email.message.Message
:param envelope: envelope to use to construct the outgoing mail. This
will be ignored in case the mail parameter is set.
:type envelope: alot.db.envelope.envelope
"""
Command.__init__(self, **kwargs)
self.mail = mail
self.envelope = envelope
self.envelope_buffer = None
@inlineCallbacks
def apply(self, ui):
if self.mail is None:
if self.envelope is None:
# needed to close later
self.envelope_buffer = ui.current_buffer
self.envelope = self.envelope_buffer.envelope
# This is to warn the user before re-sending
# an already sent message in case the envelope buffer
# was not closed because it was the last remaining buffer.
if self.envelope.sent_time:
mod = self.envelope.modified_since_sent
when = self.envelope.sent_time
warning = 'A modified version of ' * mod
warning += 'this message has been sent at %s.' % when
warning += ' Do you want to resend?'
if (yield ui.choice(warning, cancel='no',
msg_position='left')) == 'no':
return
# don't do anything if another SendCommand is in the middle of
# sending the message and we were triggered accidentally
if self.envelope.sending:
logging.debug('sending this message already!')
return
clearme = ui.notify(u'constructing mail (GPG, attachments)\u2026',
timeout=-1)
try:
self.mail = self.envelope.construct_mail()
self.mail['Date'] = email.Utils.formatdate(localtime=True)
self.mail = email_as_string(self.mail)
except GPGProblem as e:
ui.clear_notify([clearme])
ui.notify(e.message, priority='error')
return
ui.clear_notify([clearme])
# determine account to use for sending
msg = self.mail
if not isinstance(msg, email.message.Message):
msg = email.message_from_string(self.mail)
_, saddr = email.Utils.parseaddr(msg.get('From', ''))
account = settings.get_account_by_address(saddr)
if account is None:
if not settings.get_accounts():
ui.notify('no accounts set', priority='error')
return
else:
account = settings.get_accounts()[0]
# make sure self.mail is a string
logging.debug(self.mail.__class__)
if isinstance(self.mail, email.message.Message):
self.mail = str(self.mail)
# define callback
def afterwards(_):
initial_tags = []
if self.envelope is not None:
self.envelope.sending = False
self.envelope.sent_time = datetime.datetime.now()
initial_tags = self.envelope.tags
logging.debug('mail sent successfully')
ui.clear_notify([clearme])
if self.envelope_buffer is not None:
cmd = commands.globals.BufferCloseCommand(self.envelope_buffer)
ui.apply_command(cmd)
ui.notify('mail sent successfully')
# store mail locally
# This can raise StoreMailError
path = account.store_sent_mail(self.mail)
# add mail to index if maildir path available
if path is not None:
logging.debug('adding new mail to index')
ui.dbman.add_message(path, account.sent_tags + initial_tags)
ui.apply_command(globals.FlushCommand())
# define errback
def send_errb(failure):
if self.envelope is not None:
self.envelope.sending = False
ui.clear_notify([clearme])
failure.trap(SendingMailFailed)
logging.error(failure.getTraceback())
errmsg = 'failed to send: %s' % failure.value
ui.notify(errmsg, priority='error', block=True)
def store_errb(failure):
failure.trap(StoreMailError)
logging.error(failure.getTraceback())
errmsg = 'could not store mail: %s' % failure.value
ui.notify(errmsg, priority='error', block=True)
# send out
clearme = ui.notify('sending..', timeout=-1)
if self.envelope is not None:
self.envelope.sending = True
d = account.send_mail(self.mail)
d.addCallback(afterwards)
d.addErrback(send_errb)
d.addErrback(store_errb)
@registerCommand(MODE, 'edit', arguments=[
(['--spawn'], {'action': BooleanAction, 'default': None,
'help': 'spawn editor in new terminal'}),
(['--refocus'], {'action': BooleanAction, 'default': True,
'help': 'refocus envelope after editing'})])
class EditCommand(Command):
"""edit mail"""
def __init__(self, envelope=None, spawn=None, refocus=True, **kwargs):
"""
:param envelope: email to edit
:type envelope: :class:`~alot.db.envelope.Envelope`
:param spawn: force spawning of editor in a new terminal
:type spawn: bool
:param refocus: m
"""
self.envelope = envelope
self.openNew = (envelope is not None)
self.force_spawn = spawn
self.refocus = refocus
self.edit_only_body = False
Command.__init__(self, **kwargs)
def apply(self, ui):
ebuffer = ui.current_buffer
if not self.envelope:
self.envelope = ui.current_buffer.envelope
# determine editable headers
edit_headers = set(settings.get('edit_headers_whitelist'))
if '*' in edit_headers:
edit_headers = set(self.envelope.headers)
blacklist = set(settings.get('edit_headers_blacklist'))
if '*' in blacklist:
blacklist = set(self.envelope.headers)
edit_headers = edit_headers - blacklist
logging.info('editable headers: %s', edit_headers)
def openEnvelopeFromTmpfile():
# This parses the input from the tempfile.
# we do this ourselves here because we want to be able to
# just type utf-8 encoded stuff into the tempfile and let alot
# worry about encodings.
# get input
# tempfile will be removed on buffer cleanup
enc = settings.get('editor_writes_encoding')
with open(self.envelope.tmpfile.name) as f:
template = string_decode(f.read(), enc)
# call post-edit translate hook
translate = settings.get_hook('post_edit_translate')
if translate:
template = translate(template, ui=ui, dbm=ui.dbman)
self.envelope.parse_template(template,
only_body=self.edit_only_body)
if self.openNew:
ui.buffer_open(buffers.EnvelopeBuffer(ui, self.envelope))
else:
ebuffer.envelope = self.envelope
ebuffer.rebuild()
# decode header
headertext = u''
for key in edit_headers:
vlist = self.envelope.get_all(key)
if not vlist:
# ensure editable headers are present in template
vlist = ['']
else:
# remove to be edited lines from envelope
del self.envelope[key]
for value in vlist:
# newlines (with surrounding spaces) by spaces in values
value = value.strip()
value = re.sub('[ \t\r\f\v]*\n[ \t\r\f\v]*', ' ', value)
headertext += '%s: %s\n' % (key, value)
# determine editable content
bodytext = self.envelope.body
if headertext:
content = '%s\n%s' % (headertext, bodytext)
self.edit_only_body = False
else:
content = bodytext
self.edit_only_body = True
# call pre-edit translate hook
translate = settings.get_hook('pre_edit_translate')
if translate:
content = translate(content, ui=ui, dbm=ui.dbman)
# write stuff to tempfile
old_tmpfile = None
if self.envelope.tmpfile:
old_tmpfile = self.envelope.tmpfile
with tempfile.NamedTemporaryFile(
delete=False, prefix='alot.', suffix='.eml') as tmpfile:
tmpfile.write(content.encode('utf-8'))
tmpfile.flush()
self.envelope.tmpfile = tmpfile
if old_tmpfile:
os.unlink(old_tmpfile.name)
cmd = globals.EditCommand(self.envelope.tmpfile.name,
on_success=openEnvelopeFromTmpfile,
spawn=self.force_spawn,
thread=self.force_spawn,
refocus=self.refocus)
ui.apply_command(cmd)
@registerCommand(MODE, 'set', arguments=[
(['--append'], {'action': 'store_true', 'help': 'keep previous values'}),
(['key'], {'help': 'header to refine'}),
(['value'], {'nargs': '+', 'help': 'value'})])
class SetCommand(Command):
"""set header value"""
def __init__(self, key, value, append=False, **kwargs):
"""
:param key: key of the header to change
:type key: str
:param value: new value
:type value: str
"""
self.key = key
self.value = ' '.join(value)
self.reset = not append
Command.__init__(self, **kwargs)
def apply(self, ui):
envelope = ui.current_buffer.envelope
if self.reset:
if self.key in envelope:
del envelope[self.key]
envelope.add(self.key, self.value)
ui.current_buffer.rebuild()
@registerCommand(MODE, 'unset', arguments=[
(['key'], {'help': 'header to refine'})])
class UnsetCommand(Command):
"""remove header field"""
def __init__(self, key, **kwargs):
"""
:param key: key of the header to remove
:type key: str
"""
self.key = key
Command.__init__(self, **kwargs)
def apply(self, ui):
del ui.current_buffer.envelope[self.key]
ui.current_buffer.rebuild()
@registerCommand(MODE, 'toggleheaders')
class ToggleHeaderCommand(Command):
"""toggle display of all headers"""
repeatable = True
def apply(self, ui):
ui.current_buffer.toggle_all_headers()
@registerCommand(MODE, 'sign', forced={'action': 'sign'}, arguments=[
(['keyid'], {'nargs': argparse.REMAINDER, 'help': 'which key id to use'})],
help='mark mail to be signed before sending')
@registerCommand(MODE, 'unsign', forced={'action': 'unsign'},
help='mark mail not to be signed before sending')
@registerCommand(MODE, 'togglesign', forced={'action': 'toggle'}, arguments=[
(['keyid'], {'nargs': argparse.REMAINDER, 'help': 'which key id to use'})],
help='toggle sign status')
class SignCommand(Command):
"""toggle signing this email"""
repeatable = True
def __init__(self, action=None, keyid=None, **kwargs):
"""
:param action: whether to sign/unsign/toggle
:type action: str
:param keyid: which key id to use
:type keyid: str
"""
self.action = action
self.keyid = keyid
Command.__init__(self, **kwargs)
def apply(self, ui):
sign = None
key = None
envelope = ui.current_buffer.envelope
# sign status
if self.action == 'sign':
sign = True
elif self.action == 'unsign':
sign = False
elif self.action == 'toggle':
sign = not envelope.sign
envelope.sign = sign
# try to find key if hint given as parameter
if sign:
if len(self.keyid) > 0:
keyid = str(' '.join(self.keyid))
try:
key = crypto.get_key(keyid, validate=True, sign=True)
except GPGProblem as e:
envelope.sign = False
ui.notify(e.message, priority='error')
return
envelope.sign_key = key
else:
envelope.sign_key = None
# reload buffer
ui.current_buffer.rebuild()
@registerCommand(MODE, 'encrypt', forced={'action': 'encrypt'}, arguments=[
(['--trusted'], {'action': 'store_true', 'help': 'only add trusted keys'}),
(['keyids'], {'nargs': argparse.REMAINDER,
'help': 'keyid of the key to encrypt with'})],
help='request encryption of message before sendout')
@registerCommand(MODE, 'unencrypt', forced={'action': 'unencrypt'},
help='remove request to encrypt message before sending')
@registerCommand(MODE, 'toggleencrypt', forced={'action': 'toggleencrypt'},
arguments=[
(['--trusted'], {'action': 'store_true',
'help': 'only add trusted keys'}),
(['keyids'], {'nargs': argparse.REMAINDER,
'help': 'keyid of the key to encrypt with'})],
help='toggle if message should be encrypted before sendout')
@registerCommand(MODE, 'rmencrypt', forced={'action': 'rmencrypt'},
arguments=[
(['keyids'], {'nargs': argparse.REMAINDER,
'help': 'keyid of the key to encrypt with'})],
help='do not encrypt to given recipient key')
class EncryptCommand(Command):
def __init__(self, action=None, keyids=None, trusted=False, **kwargs):
"""
:param action: wether to encrypt/unencrypt/toggleencrypt
:type action: str
:param keyid: the id of the key to encrypt
:type keyid: str
:param trusted: wether to filter keys and only use trusted ones
:type trusted: bool
"""
self.encrypt_keys = keyids
self.action = action
self.trusted = trusted
Command.__init__(self, **kwargs)
@inlineCallbacks
def apply(self, ui):
envelope = ui.current_buffer.envelope
if self.action == 'rmencrypt':
try:
for keyid in self.encrypt_keys:
tmp_key = crypto.get_key(keyid)
del envelope.encrypt_keys[crypto.hash_key(tmp_key)]
except GPGProblem as e:
ui.notify(e.message, priority='error')
if not envelope.encrypt_keys:
envelope.encrypt = False
ui.current_buffer.rebuild()
return
elif self.action == 'encrypt':
encrypt = True
elif self.action == 'unencrypt':
encrypt = False
elif self.action == 'toggleencrypt':
encrypt = not envelope.encrypt
envelope.encrypt = encrypt
if encrypt:
if not self.encrypt_keys:
for recipient in envelope.headers['To'][0].split(','):
if not recipient:
continue
match = re.search("<(.*@.*)>", recipient)
if match:
recipient = match.group(1)
self.encrypt_keys.append(recipient)
logging.debug("encryption keys: %s", self.encrypt_keys)
keys = yield get_keys(ui, self.encrypt_keys,
signed_only=self.trusted)
if self.trusted:
logging.debug("filtered encrytion keys: " +
" ".join(x.uids[0].uid for x in keys.itervalues()))
if keys:
envelope.encrypt_keys.update(keys)
else:
envelope.encrypt = False
if not envelope.encrypt:
# This is an extra conditional as it can even happen if encrypt is
# True.
envelope.encrypt_keys = {}
# reload buffer
ui.current_buffer.rebuild()
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