Blame SOURCES/certdata2pem.py

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#!/usr/bin/python
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# vim:set et sw=4:
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#
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# certdata2pem.py - splits certdata.txt into multiple files
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#
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# Copyright (C) 2009 Philipp Kern <pkern@debian.org>
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# Copyright (C) 2013 Kai Engert <kaie@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
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# USA.
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import base64
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import os.path
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import re
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import sys
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import textwrap
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import urllib
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objects = []
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def printable_serial(obj):
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  return ".".join(map(lambda x:str(ord(x)), obj['CKA_SERIAL_NUMBER']))
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# Dirty file parser.
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in_data, in_multiline, in_obj = False, False, False
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field, type, value, obj = None, None, None, dict()
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for line in open('certdata.txt', 'r'):
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    # Ignore the file header.
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    if not in_data:
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        if line.startswith('BEGINDATA'):
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            in_data = True
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        continue
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    # Ignore comment lines.
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    if line.startswith('#'):
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        continue
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    # Empty lines are significant if we are inside an object.
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    if in_obj and len(line.strip()) == 0:
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        objects.append(obj)
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        obj = dict()
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        in_obj = False
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        continue
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    if len(line.strip()) == 0:
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        continue
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    if in_multiline:
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        if not line.startswith('END'):
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            if type == 'MULTILINE_OCTAL':
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                line = line.strip()
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                for i in re.finditer(r'\\([0-3][0-7][0-7])', line):
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                    value += chr(int(i.group(1), 8))
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            else:
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                value += line
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            continue
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        obj[field] = value
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        in_multiline = False
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        continue
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    if line.startswith('CKA_CLASS'):
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        in_obj = True
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    line_parts = line.strip().split(' ', 2)
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    if len(line_parts) > 2:
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        field, type = line_parts[0:2]
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        value = ' '.join(line_parts[2:])
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    elif len(line_parts) == 2:
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        field, type = line_parts
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        value = None
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    else:
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        raise NotImplementedError, 'line_parts < 2 not supported.\n' + line
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    if type == 'MULTILINE_OCTAL':
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        in_multiline = True
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        value = ""
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        continue
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    obj[field] = value
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if len(obj.items()) > 0:
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    objects.append(obj)
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# Build up trust database.
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trustmap = dict()
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for obj in objects:
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    if obj['CKA_CLASS'] != 'CKO_NSS_TRUST':
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        continue
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    key = obj['CKA_LABEL'] + printable_serial(obj)
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    trustmap[key] = obj
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    print " added trust", key
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# Build up cert database.
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certmap = dict()
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for obj in objects:
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    if obj['CKA_CLASS'] != 'CKO_CERTIFICATE':
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        continue
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    key = obj['CKA_LABEL'] + printable_serial(obj)
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    certmap[key] = obj
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    print " added cert", key
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def obj_to_filename(obj):
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    label = obj['CKA_LABEL'][1:-1]
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    label = label.replace('/', '_')\
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        .replace(' ', '_')\
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        .replace('(', '=')\
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        .replace(')', '=')\
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        .replace(',', '_')
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    label = re.sub(r'\\x[0-9a-fA-F]{2}', lambda m:chr(int(m.group(0)[2:], 16)), label)
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    serial = printable_serial(obj)
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    return label + ":" + serial
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trust_types = {
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  "CKA_TRUST_DIGITAL_SIGNATURE": "digital-signature",
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  "CKA_TRUST_NON_REPUDIATION": "non-repudiation",
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  "CKA_TRUST_KEY_ENCIPHERMENT": "key-encipherment",
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  "CKA_TRUST_DATA_ENCIPHERMENT": "data-encipherment",
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  "CKA_TRUST_KEY_AGREEMENT": "key-agreement",
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  "CKA_TRUST_KEY_CERT_SIGN": "cert-sign",
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  "CKA_TRUST_CRL_SIGN": "crl-sign",
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  "CKA_TRUST_SERVER_AUTH": "server-auth",
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  "CKA_TRUST_CLIENT_AUTH": "client-auth",
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  "CKA_TRUST_CODE_SIGNING": "code-signing",
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  "CKA_TRUST_EMAIL_PROTECTION": "email-protection",
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  "CKA_TRUST_IPSEC_END_SYSTEM": "ipsec-end-system",
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  "CKA_TRUST_IPSEC_TUNNEL": "ipsec-tunnel",
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  "CKA_TRUST_IPSEC_USER": "ipsec-user",
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  "CKA_TRUST_TIME_STAMPING": "time-stamping",
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  "CKA_TRUST_STEP_UP_APPROVED": "step-up-approved",
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}
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openssl_trust = {
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  "CKA_TRUST_SERVER_AUTH": "serverAuth",
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  "CKA_TRUST_CLIENT_AUTH": "clientAuth",
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  "CKA_TRUST_CODE_SIGNING": "codeSigning",
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  "CKA_TRUST_EMAIL_PROTECTION": "emailProtection",
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}
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for tobj in objects:
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    if tobj['CKA_CLASS'] == 'CKO_NSS_TRUST':
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        key = tobj['CKA_LABEL'] + printable_serial(tobj)
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        print "producing trust for " + key
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        trustbits = []
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        distrustbits = []
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        openssl_trustflags = []
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        openssl_distrustflags = []
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        for t in trust_types.keys():
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            if tobj.has_key(t) and tobj[t] == 'CKT_NSS_TRUSTED_DELEGATOR':
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                trustbits.append(t)
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                if t in openssl_trust:
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                    openssl_trustflags.append(openssl_trust[t])
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            if tobj.has_key(t) and tobj[t] == 'CKT_NSS_NOT_TRUSTED':
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                distrustbits.append(t)
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                if t in openssl_trust:
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                    openssl_distrustflags.append(openssl_trust[t])
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        fname = obj_to_filename(tobj)
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        try:
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            obj = certmap[key]
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        except:
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            obj = None
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        if obj != None:
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            fname += ".crt"
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        else:
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            fname += ".p11-kit"
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        f = open(fname, 'w')
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        if obj != None:
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            f.write("# alias=%s\n"%tobj['CKA_LABEL'])
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            f.write("# trust=" + " ".join(trustbits) + "\n")
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            f.write("# distrust=" + " ".join(distrustbits) + "\n")
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            if openssl_trustflags:
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                f.write("# openssl-trust=" + " ".join(openssl_trustflags) + "\n")
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            if openssl_distrustflags:
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                f.write("# openssl-distrust=" + " ".join(openssl_distrustflags) + "\n")
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            f.write("-----BEGIN CERTIFICATE-----\n")
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            f.write("\n".join(textwrap.wrap(base64.b64encode(obj['CKA_VALUE']), 64)))
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            f.write("\n-----END CERTIFICATE-----\n")
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        else:
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            f.write("[p11-kit-object-v1]\n")
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            f.write("label: ");
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            f.write(tobj['CKA_LABEL']);
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            f.write("\n")
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            f.write("class: certificate\n")
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            f.write("certificate-type: x-509\n")
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            f.write("issuer: \"");
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            f.write(urllib.quote(tobj['CKA_ISSUER']));
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            f.write("\"\n")
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            f.write("serial-number: \"");
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            f.write(urllib.quote(tobj['CKA_SERIAL_NUMBER']));
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            f.write("\"\n")
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            if (tobj['CKA_TRUST_SERVER_AUTH'] == 'CKT_NSS_NOT_TRUSTED') or (tobj['CKA_TRUST_EMAIL_PROTECTION'] == 'CKT_NSS_NOT_TRUSTED') or (tobj['CKA_TRUST_CODE_SIGNING'] == 'CKT_NSS_NOT_TRUSTED'):
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              f.write("x-distrusted: true\n")
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            f.write("\n\n")
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        print " -> written as '%s', trust = %s, openssl-trust = %s, distrust = %s, openssl-distrust = %s" % (fname, trustbits, openssl_trustflags, distrustbits, openssl_distrustflags)