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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Load media received from an IMAP inbox
from imaplib2 import IMAP4_SSL
from threading import Thread, Event
from email import message_from_string
import re
from base64 import b64encode, b64decode
from httplib import HTTPConnection, HTTPSConnection
from urlparse import urlparse
from util import *
from imgutil import *
from sys import stderr, argv, exit
from traceback import print_exc
# Debug print
def debug(*args):
if True:
print >> stderr, args
# Fetch an email and return the image it contains
def fetchmail(id, imap):
# Extract address from the To header
htyp, hdata = imap.fetch(id, '(BODY.PEEK[HEADER])')
header = message_from_string(hdata[0][1])
if header['To'] is None:
return (None, 'Couldn\'t retrieve email address')
b64aparts = re.findall('[\w=-_]+@[\w.]+', header['To'])
if len(b64aparts) == 0:
return (None, 'Couldn\'t parse email address')
b64address = (b64aparts[len(b64aparts) - 1]).split('@')[0]
try:
address = b64decode((b64address.replace('-', '+').replace('_', '/') + '===')[0: len(b64address) + (len(b64address) % 4)])
except:
return (None, 'Couldn\'t decode email address')
# Check if the address targets a picture (p/) or an icon (i/)
if address[0:2] != 'p/' and address[0:2] != 'i/':
return (None, 'Email address must start with p/ or i/')
debug('putimages.py::readimage::address', address)
# Extract image mime body part
btyp, bdata = imap.fetch(id, '(BODY.PEEK[TEXT])')
msg = message_from_string(hdata[0][1] + bdata[0][1])
debug('putimages.py::readimage::msg', msg)
parts = map(lambda p: p.get_payload(decode=True), filter(lambda p: p.get_content_type().startswith('image/'), msg.walk()))
if len(parts) == 0:
return (None, 'Email doesn\'t contain an image')
# Convert image to a 50x50 JPEG image
dataurl = bufto50x50jpeg(parts[0])
# Return address, image url pair
return (address, dataurl)
def putimage(address, dataurl, httpurl, httpuser, httppass):
# Put image into the image database
id = address.split('/')[1]
token = address.split('/')[2]
entry = '<?xml version="1.0" encoding="UTF-8"?>\n' + \
'<entry xmlns="http://www.w3.org/2005/Atom">\n' + \
'<title type="text">' + id + '</title>\n' + \
'<id>' + id + '</id>\n' + \
'<content type="application/xml">\n' + \
('<picture>\n' if address[0:2] == 'p/' else '<icon>\n') + \
'<image>' + dataurl + '</image>\n' + \
'<token>' + token + '</token>\n' + \
('</picture>\n' if address[0:2] == 'p/' else '</icon>\n') + \
'</content>\n' + \
'</entry>'
url = urlparse(httpurl)
conn = HTTPSConnection(url.hostname, 443 if url.port is None else url.port) if url.scheme == 'https' else \
HTTPConnection(url.hostname, 80 if url.port is None else url.port)
#conn.set_debuglevel(9)
path = url.path + ('pictures/' if address[0:2] == 'p/' else 'icons/') + id
puturl = url.scheme + '//' + url.netloc + path
debug('imapd.py::putimage::url', puturl)
auth = b64encode("%s:%s" % (httpuser, httppass)).replace('\n', '')
headers = { 'Authorization' : 'Basic ' + auth, 'X-Forwarded-Server' : url.hostname, 'Content-type': 'application/atom+xml', 'Accept': '*/*' }
conn.request('PUT', path, entry, headers)
response = conn.getresponse()
if response.status != 200:
debug('imapd.py::putimage::error', response.status, response.reason)
return (None, 'Put error: ' + repr(response.status) + ' : ' + response.reason)
conn.close()
return (puturl, entry)
# Read and process an email
def processmail(id, imap, httpurl, httpuser, httppass):
if id == '':
return None
# Read email and any image in it
address, dataurl = fetchmail(id, imap)
if address is None:
# Mark email as seen if it doesn't contain an image
debug('imapd.py::processmail::seen', id)
imap.store(id, '+FLAGS', '\SEEN')
return None
# Put image into the database
put = putimage(address, dataurl, httpurl, httpuser, httppass)
if put[0] is None:
return None
# Mark email as seen if processed successfully
debug('imapd.py::processmail::seen', id)
imap.store(id, '+FLAGS', '\SEEN')
return put[0]
# IMAP idle thread
def idle(imap, httpurl, httpuser, httppass, stop, stopped):
try:
sync = Event()
while True:
# Stop the thread
if stop.isSet():
debug('imapd.py::idle::stopped')
stopped.set()
return
# Wait for changes
def callback(args):
debug('imapd.py::idle::callback')
if not stop.isSet():
sync.set()
stop.set()
debug('imapd.py::idle::waiting')
imap.idle(callback = callback)
stop.wait()
# Handle email change event
if sync.isSet():
stop.clear()
sync.clear()
debug('imapd.py::idle::sync')
# List unseen emails
typ, data = imap.search(None, 'UNSEEN')
debug('imapd.py::idle::search', typ, data)
# Process unseen email
map(lambda id: processmail(id, imap, httpurl, httpuser, httppass), data[0].split(' '))
except Exception as e:
debug('imapd.py::idle::except', e)
print_exc()
stopped.set()
return
# Main processing loop
def main(imapurl, imapuser, imappass, httpurl, httpuser, httppass):
try:
# Connect and login
url = urlparse(imapurl)
imap = IMAP4_SSL(url.hostname, 993 if url.port is None else url.port)
imap.login(imapuser, imappass)
imap.select('Inbox')
debug('imapd.py::main::connected')
try:
# Start imap idle thread
stop = Event()
stopped = Event()
idling = Thread(target=idle, args=(imap, httpurl, httpuser, httppass, stop, stopped))
idling.start()
# List unseen emails
typ, data = imap.search(None, 'UNSEEN')
debug('imapd.py::main::search', typ, data)
# Process unseen emails
map(lambda id: processmail(id, imap, httpurl, httpuser, httppass), data[0].split(' '))
# Wait 60 seconds
debug('imapd.py::main::waiting')
try:
stopped.wait()
except KeyboardInterrupt:
pass
# Stop the thread
debug('imapd.py::main::stopping')
stop.set()
idling.join()
# Close and logout
debug('imapd.py::main::disconnecting')
imap.close()
imap.logout()
return 0
except Exception as e:
debug('imapd.py::except', e)
print_exc()
# Close and logout
imap.close()
imap.logout()
return 1
except Exception as e:
debug('imapd.py::except', e)
print_exc()
return 1
if __name__ == '__main__':
exit(main(argv[1], argv[2], argv[3], argv[4], argv[5], argv[6]))
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