Coverage for ipalib/pkcs10 : 69%

# Authors: 

#   Rob Crittenden <rcritten@redhat.com> 

# 

# Copyright (C) 2010  Red Hat 

# see file 'COPYING' for use and warranty information 

# 

# This program is free software; you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with this program.  If not, see <http://www.gnu.org/licenses/>. 

import os 

import sys 

import base64 

import nss.nss as nss 

from ipapython import ipautil 

from ipalib import api 

PEM = 0 

DER = 1 

def get_subjectaltname(request): 

    """ 

    Given a CSR return the subjectaltname value, if any. 

    The return value is a tuple of strings or None 

    """ 

    for extension in request.extensions: 

        if extension.oid_tag  == nss.SEC_OID_X509_SUBJECT_ALT_NAME: 

            return nss.x509_alt_name(extension.value) 

    return None 

def get_subject(request): 

    """ 

    Given a CSR return the subject value. 

    This returns an nss.DN object. 

    """ 

    return request.subject 

def strip_header(csr): 

    """ 

    Remove the header and footer from a CSR. 

    """ 

    headerlen = 40 

    s = csr.find("-----BEGIN NEW CERTIFICATE REQUEST-----") 

    if s == -1: 

        headerlen = 36 

        s = csr.find("-----BEGIN CERTIFICATE REQUEST-----") 

    if s >= 0: 

        e = csr.find("-----END") 

        csr = csr[s+headerlen:e] 

    return csr 

def load_certificate_request(csr): 

    """ 

    Given a base64-encoded certificate request, with or without the 

    header/footer, return a request object. 

    """ 

    csr = strip_header(csr) 

    substrate = base64.b64decode(csr) 

    # A fail-safe so we can always read a CSR. python-nss/NSS will segfault 

    # otherwise 

    if not nss.nss_is_initialized(): 

        nss.nss_init_nodb() 

    return nss.CertificateRequest(substrate) 

if __name__ == '__main__': 

    nss.nss_init_nodb() 

    # Read PEM request from stdin and print out its components 

    csrlines = sys.stdin.readlines() 

    csr = ''.join(csrlines) 

    csr = load_certificate_request(csr) 

    print csr 

    print get_subject(csr) 

    print get_subjectaltname(csr)