GPG agent with cronjob

[Anton Parkhomenko]

Hello, everybody!
Could somebody help me to figure out how to use GPG agent in my daemon/cronjob?
I'm trying to sync my mail with OfflineIMAP via cron, it uses my own password-store utility which in turn uses python-gnupg. When I'm launching OfflineIMAP from terminal, it's popping out a GPGTools window with password prompt (I'm using Mac OS X 10.9 by the way) and syncing my mail. But for this cronjob */1 * * * * /usr/local/bin/offlineimap -qf INBOX > /Users/chuwy/logfile 2>&1, I have following traceback in my logfile:

Traceback:
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/accounts.py", line 241, in syncrunner
    self.sync()
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/accounts.py", line 303, in sync
    remoterepos.getfolders()
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/repository/IMAP.py", line 313, in getfolders
    imapobj = self.imapserver.acquireconnection()
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imapserver.py", line 415, in acquireconnection
    self._authn_helper(imapobj)
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imapserver.py", line 325, in _authn_helper
    if func(imapobj):
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imapserver.py", line 251, in _authn_plain
    imapobj.authenticate('PLAIN', self.plainhandler)
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imaplib2.py", line 648, in authenticate
    typ, dat = self._simple_command('AUTHENTICATE', mechanism.upper())
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imaplib2.py", line 1615, in _simple_command
    return self._command_complete(self._command(name, *args), kw)
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imaplib2.py", line 1354, in _command
    literal = literator(data, rqb)
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imaplib2.py", line 2163, in process
    ret = self.mech(self.decode(data))
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imapserver.py", line 161, in plainhandler
    passwd = self.getpassword()
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/imapserver.py", line 111, in getpassword
    self.password = self.repos.getpassword() or \
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/repository/IMAP.py", line 258, in getpassword
    return self.localeval.eval(passwd)
  File "/usr/local/Cellar/offline-imap/6.5.5/libexec/offlineimap/localeval.py", line 45, in eval
    return eval(text, names)
  File "<string>", line 1, in <module>
  File "/Users/chuwy/.mutt/offlineimap.py", line 7, in get_keychain_pass
    return get_secret(account)
  File "/Users/chuwy/workspace/mrsmith/mrsmith/api.py", line 19, in get_secret
    gpg = gnupg.GPG(gnupghome=config.get('GPG', 'gnupghome'), use_agent=True)
  File "/usr/local/lib/python2.7/site-packages/gnupg.py", line 664, in __init__
    p = self._open_subprocess(["--version"])
  File "/usr/local/lib/python2.7/site-packages/gnupg.py", line 712, in _open_subprocess
    return Popen(cmd, shell=False, stdin=PIPE, stdout=PIPE, stderr=PIPE)
  File "/usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1327, in _execute_child
    raise child_exception

I'm almost sure, it's caused by GPG Tools & python-gnupg couple, but can't figure out what exactly going on.
P.S. The same problem with launchd.

[Vinay Sajip]

On Wednesday, June 18, 2014 9:02:21 AM UTC+1, Anton Parkhomenko wrote:

I'm almost sure, it's caused by GPG Tools & python-gnupg couple, but can't figure out what exactly going on.
P.S. The same problem with launchd.

It's most likely to be a permissions issue of some sort - look for differences between the cron environment and your normal environment when logged in.

Note that the error happens in the GPG constructor - i.e. before doing any real work.

Regards,

Vinay Sajip 

[Alexander Hamann]

On Wednesday, June 18, 2014 10:48:46 AM UTC+2, Vinay Sajip wrote:

It's most likely to be a permissions issue of some sort - look for differences between the cron environment and your normal environment when logged in.

Thanks for the hint, Vinay! Adding /usr/local/bin (the location of my Python binary) to cron's PATH helped in my case.