root/fedd/confirm_sshkey.py

#!/usr/bin/env python

import os, sys
import MySQLdb
from federation.util import file_expanding_opts


class opt_parser(file_expanding_opts):
    def __init__(self):
        OptionParser.__init__(self, usage="%prog [opts] (--help for details)",
                version="0.1")
        self.add_option('-u', '--user', dest='user', action='store',
                default=None, help="User to confirm key of")
        self.add_option('-f', '--keyfile', dest='keyfile',
                action='callback', callback=self.expand_file, type='str',
                default=None, help="file containing pubkey to confirm")
        self.add_option('-k', '--key', dest='key', default=None, 
                action='callback', callback=self.expand_file, type='str',
                help='Key on the command line')
        self.add_option('-q', '--quiet', dest='verbose', action='store_false', 
                default=True, help="No output")
        self.add_option('-C', dest='dummy', 
                help="Compatibility option, no function")


def read_keyfile(file):
    """
    Return the contents of file as a single line
    """

    f = open(file, "r")
    key = ""
    for line in f:
        line = line.strip()
        key += line
    f.close()
    return key


query_template = """
SELECT
    uid 
FROM user_pubkeys
WHERE uid = '%s' AND pubkey='%s'
"""
parser = opt_parser()
opts, args = parser.parse_args()
if len(args):
    parser.error("Unlabeled option.  Did you forget to quote a key?")

if opts.user: user = opts.user
else: parser.error("--user is required")

if opts.keyfile: 
    try:
        key = read_keyfile(opts.keyfile)
    except IOError, e:
        sys.exit('Cannot read keyfile %s: %s' % (opts.keyfile, e))
elif opts.key: key = opts.key.strip()
else: parser.error("--keyfile or --key is required")

query = query_template % (user, key)

try:
    db = MySQLdb.connect(db='tbdb')
except Exception, e:
    if len(e.args) == 2:
        num, str = e.args
    else:
        str = unicode(e)
        num = -1
    sys.exit("Cannot connect: %s (%d)" % (str, num))

c = db.cursor()
c.execute(query)

if len(c.fetchall()) == 1:
    if opts.verbose: print "Confirmed"
    sys.exit(0)
else:
    if opts.verbose: print "No such key for %s" % user
    sys.exit(1)