mutt-keyring

#!/usr/bin/python3
#
# Fetch passwords for imap/smtp accounts from gnome-keyring
# Adding passwords to gnome-keyring is up to yourself. Passwords added
# by evolution will be picked up, which may help.
#
# Usage in .muttrc:
# source "~/bin/mutt-keyring $folder $smtp_url|"

import configparser
import glob
import os
import secretstorage
import sys
import urllib.parse

def main():
    urls = [parse_url(x) for x in sys.argv[1:]]
    bus = secretstorage.dbus_init()
    collection = secretstorage.get_default_collection(bus)
    root = os.path.join(os.path.expanduser('~'), '.config', 'evolution', 'sources')

    for source in glob.glob(os.path.join(root, '*.source')):
        uid = os.path.splitext(os.path.basename(source))[0]
        proto, user, host, parent = read_source(source)
        if (proto, user, host) in urls:
            secretd = {
                'xdg:schema': 'org.gnome.Evolution.Data.Source',
                'e-source-uid': uid,
            }
            secrets = list(collection.search_items(secretd))
            if not secrets and parent:
                secretd['e-source-uid'] = parent
                secrets = list(collection.search_items(secretd))
            if secrets:
                print("set %s_pass='%s'" % (proto, secrets[0].get_secret().decode('utf-8')))

def read_source(file):
    source = configparser.ConfigParser()
    source.read(file)
    user = host = proto = None
    parent = source['Data Source']['parent']
    if 'Authentication' in source:
        user = source['Authentication']['user']
        host = source['Authentication']['host']
    for key in ('Mail Account', 'Mail Transport'):
        if key in source:
            proto = source[key]['backendname']
            if proto == 'imapx':
                proto = 'imap'
    return (proto, user, host, parent)

def parse_url(url):
    url = urllib.parse.urlsplit(url)
    scheme = 'imap' if url.scheme.startswith('imap') else 'smtp'
    username = url.username
    if ';' in username:
        username = username[:username.find(';')]
    return (scheme, username, url.hostname)

if __name__ == '__main__':
    main()