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# $Id$
# Basic plan here is to read in csv files for tabular data (roa
# requests, child asn assignments, child prefix assignments), read
# command line or magic file for my own handle, and read or generate
# pem for bpki ca cert and bpki ee cert (cannot do latter without
# corresponding bpki ee pkcs10). whack all this together and generate
# some xml thing in format to be determined (need to write schema).
import subprocess, csv, sys, os
from xml.etree.ElementTree import Element, SubElement, ElementTree, tostring
# The following should all be configurable on command line, as perhaps
# should the csv conventions (dialect, delimiter, see csv module doc
# for all the fun one can have here). For now, just wire all this in,
# add command line junk later.
my_handle = "wombat"
roa_csv_file = "roas.csv"
validity_csv_file = "validity.csv"
prefixes_csv_file = "prefixes.csv"
asns_csv_file = "asns.csv"
bpki_ca_conf_file = "bpki-ca-cert.conf"
bpki_ca_cert_file = "bpki-ca-cert.pem"
bpki_ca_key_file = "bpki-ca-key.pem"
bpki_ee_cert_file = "bpki-ee-cert.pem"
bpki_ee_req_file = "bpki-ee-pkcs10.pem"
class comma_set(set):
def __str__(self):
return ",".join(self)
class roa_request(object):
def __init__(self, asn):
self.asn = asn
self.prefixes = comma_set()
def add(self, prefix):
self.prefixes.add(prefix)
def xml(self, e):
return SubElement(e, "roa_request",
asn = self.asn,
prefixes = str(self.prefixes))
class roa_requests(dict):
def add(self, asn, prefix):
if asn not in self:
self[asn] = roa_request(asn)
self[asn].add(prefix)
def xml(self, e):
for r in self.itervalues():
r.xml(e)
class child(object):
def __init__(self, handle):
self.handle = handle
self.asns = comma_set()
self.prefixes = comma_set()
self.validity = None
def add(self, prefix = None, asn = None, validity = None):
if prefix is not None:
self.prefixes.add(prefix)
if asn is not None:
self.asns.add(asn)
if validity is not None:
self.validity = validity
def xml(self, e):
return SubElement(e, "child",
handle = self.handle,
valid_until = self.validity,
asns = str(self.asns),
prefixes = str(self.prefixes))
class children(dict):
def add(self, handle, prefix = None, asn = None, validity = None):
if handle not in self:
self[handle] = child(handle)
self[handle].add(prefix = prefix, asn = asn, validity = validity)
def xml(self, e):
for c in self.itervalues():
c.xml(e)
def csv_open(filename, delimiter = "\t", dialect = None):
return csv.reader(open(filename, "rb"), dialect = dialect, delimiter = delimiter)
def PEMElement(e, tag, filename):
SubElement(e, tag).text = "".join(open(filename).readlines()[1:-1])
def bpki_ca(e):
if not os.path.exists(bpki_ca_key_file):
subprocess.check_call(("openssl", "genrsa",
"-out", bpki_ca_key_file,
"2048"))
if not os.path.exists(bpki_ca_conf_file):
open(bpki_ca_conf_file, "w").write(bpki_ca_conf_fmt % { "handle" : my_handle })
if not os.path.exists(bpki_ca_cert_file):
subprocess.check_call(("openssl", "req", "-new", "-sha256", "-x509",
"-config", bpki_ca_conf_file,
"-extensions", "req_x509_ext",
"-key", bpki_ca_key_file,
"-out", bpki_ca_cert_file))
PEMElement(e, "bpki_ca_certificate", bpki_ca_cert_file)
bpki_ca_conf_fmt = '''\
[req]
default_bits = 2048
default_md = sha256
distinguished_name = req_dn
x509_extensions = req_x509_ext
prompt = no
[req_dn]
CN = %(handle)s
[req_x509_ext]
basicConstraints = critical,CA:true
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always
'''
def bpki_ee(e):
if os.path.exists(bpki_ee_req_file):
if not os.path.exists(bpki_ee_cert_file):
subprocess.check_call(("openssl", "x509", "-req", "-sha256", "-days", "360",
"-CA", bpki_ca_cert_file,
"-CAkey", bpki_ca_key_file,
"-in", bpki_ee_req_file,
"-out", bpki_ee_cert_file,
"-CAcreateserial"))
PEMElement(e, "bpki_ee_certificate", bpki_ee_cert_file)
def extract_resources():
pass
roas = roa_requests()
kids = children()
# format: p/n-m asn
for pnm, asn in csv_open(roa_csv_file):
roas.add(asn = asn, prefix = pnm)
# childname date
for handle, date in csv_open(validity_csv_file):
kids.add(handle = handle, validity = date)
# childname p/n
for handle, pn in csv_open(prefixes_csv_file):
kids.add(handle = handle, prefix = pn)
# childname asn
for handle, asn in csv_open(asns_csv_file):
kids.add(handle = handle, asn = asn)
e = Element("myrpki", handle = my_handle)
roas.xml(e)
kids.xml(e)
bpki_ca(e)
bpki_ee(e)
if True:
ElementTree(e).write(sys.stdout)
else:
print tostring(e)
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