source: fedd/db_to_certs.py @ d064566

#!/usr/bin/env python

import os, sys
import MySQLdb
import tempfile
import stat
from optparse import OptionParser

from deter import fedid

class opt_parser(OptionParser):
    def __init__(self):
        OptionParser.__init__(self, usage="%prog [opts] (--help for details)",
                version="0.1")
        self.add_option('-u', '--user', dest='users', action='append',
                default=[], help="Users to extract from DB")
        self.add_option('-p', '--project', dest='projects', action='append',
                default=[], help="Projects to extract from DB")
        self.add_option('-d', '--cert-dir', dest='cert_dir', 
                default=None, help='Directory to store copies of certificates')


def cert_to_fid(cstr):
    fd, path = tempfile.mkstemp('.pem')
    try:
        try:
            f = os.fdopen(fd, "w")
            print >>f, cstr
            f.close()
        except IOError, e:
            print >>sys.stderr, "Error creating user %s" % u
        return fedid(file=path)
    finally:
        os.remove(path)


def add_list(l, field):
    str = ""
    for x in l:
        if str: str += " OR "
        else: str = " AND ("

        str += "%s='%s'" % (field, x)
    if str: str += ")"
    return str


fids = { }
q_start = """
SELECT
    g.uid, 
    CASE g.gid
        WHEN g.pid THEN g.pid
        ELSE CONCAT(g.pid, '/', g.gid)
    END,
    CONCAT('-----BEGIN RSA PRIVATE KEY-----\\n',
    s.privkey,
    '-----END RSA PRIVATE KEY-----\\n',
    '-----BEGIN CERTIFICATE-----\\n',
        s.cert,
        '-----END CERTIFICATE-----\\n'),
    encrypted
FROM group_membership g INNER JOIN user_sslcerts s
    ON g.uid = s.uid
WHERE revoked is NULL AND encrypted = 0
"""
q_end ="""
ORDER BY s.uid
"""

opts, args = opt_parser().parse_args()

if opts.cert_dir:
    if not os.path.isdir(opts.cert_dir):
        sys.exit('Not a directory: %s' % opts.cert_dir)
    elif not os.access(opts.cert_dir, os.W_OK):
        sys.exit('Cannot write %s' % opts.cert_dir)
    else:
        os.chmod(opts.cert_dir, stat.S_IRWXU)



user_clause= add_list(opts.users, 'g.uid')
project_clause= add_list(opts.projects, 'g.pid')

query = q_start + user_clause + project_clause + q_end

db = MySQLdb.connect(db='tbdb')
c = db.cursor()
c.execute(query)

for u, p, c, e in c.fetchall():
    fid = fids.get(c, None)

    if not fid:
        fid = cert_to_fid(c)
        fids[c] = fid
        if opts.cert_dir:
            cf =os.path.join(opts.cert_dir, '%s.pem' % u)
            if not os.access(cf, os.F_OK) or os.access(cf, os.W_OK):
                try:
                    f = open(cf, 'w')
                    f.write(c)
                    f.close()
                    os.chmod(cf, stat.S_IREAD)
                except EnvironmentError, e:
                    print >>sys.stderr, 'Cannot write %s: %s' % \
                            (e.filename, e.strerror)