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146 lines
4.3 KiB
Python
146 lines
4.3 KiB
Python
# Authors: Rob Crittenden <rcritten@redhat.com>
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#
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# Copyright (C) 2009 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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from ipapython import ipautil
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from ipapython import nsslib
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from ipalib import pkcs10
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import tempfile
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import sha
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import shutil
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import os
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class CertDB(object):
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"""
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To be used for temporary NSS databases only. If temporary is set then
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this willcompletely remove the database it is working on when the
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class is destroyed.
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"""
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def __init__(self, secdir, password=None, temporary=False):
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if secdir is None:
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secdir = tempfile.mkdtemp(prefix = "certdb-")
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if password is None:
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password = self.generate_random()
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self.secdir = secdir
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self.password = password
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self.temporary = temporary
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self.noise_file = secdir + "/noise"
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self.pwd_file = secdir + "/pwd"
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self.csr_file = secdir + "/csr.txt"
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f = open(self.pwd_file, "w")
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f.write(self.password)
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f.close()
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if not ipautil.file_exists(secdir + "/secmod.db"):
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self.run_certutil(["-N", "-f", self.pwd_file])
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def __del__(self):
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if self.temporary:
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shutil.rmtree(self.secdir)
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else:
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# clean up
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if ipautil.file_exists(self.noise_file):
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os.remove(self.noise_file)
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def run_certutil(self, args, stdin=None):
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new_args = ["/usr/bin/certutil", "-d", self.secdir]
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new_args = new_args + args
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return ipautil.run(new_args, stdin)
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def generate_random(self):
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return sha.sha(ipautil.ipa_generate_password()).hexdigest()
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def create_noise_file(self):
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"""
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Generate a noise file to be used when creating a key
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"""
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if ipautil.file_exists(self.noise_file):
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os.remove(self.noise_file)
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f = open(self.noise_file, "w")
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f.write(self.generate_random())
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f.close()
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return
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def generate_csr(self, subject, keysize=2048, keytype="rsa"):
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"""
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Generate a Certificate Signing Request (CSR) and return as a
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string the base-64 result with the BEGIN/END block.
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"""
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self.create_noise_file()
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args = ["-R", "-s", subject,
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"-o", self.csr_file,
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"-k", keytype,
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"-g", str(keysize),
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"-z", self.noise_file,
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"-f", self.pwd_file,
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"-a"]
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self.run_certutil(args)
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# read in the CSR
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f = open(self.csr_file, "r")
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csr = f.readlines()
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f.close()
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csr = "".join(csr)
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csr = pkcs10.strip_header(csr)
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return csr
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def add_certificate(self, cert_file, nickname="Server-Cert", is_ca=False):
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"""
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Add a certificate to our NSS database.
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Only supports base64-encoded certificates, not DER-encoded.
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"""
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if is_ca:
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trust_flag="CT,C,C"
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else:
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trust_flag="u,u,u"
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# Import a certificate from an ASCII file
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args = ["-A",
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"-n", nickname,
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"-t", trust_flag,
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"-i", cert_file,
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"-f", self.pwd_file,
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"-a"]
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self.run_certutil(args)
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def create_pkcs12(self, pkcs12_file, nickname="Server-Cert", password=None):
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if password is None:
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password = self.password
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p12pwd_file = self.secdir + "/pkcs12_pwd"
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f = open(p12pwd_file, "w")
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f.write(password)
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f.close()
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args = ["/usr/bin/pk12util",
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"-d", self.secdir,
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"-o", pkcs12_file,
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"-n", nickname,
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"-k", self.pwd_file,
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"-w", p12pwd_file]
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ipautil.run(args)
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return password
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