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# $Id$
# Copyright (C) 2011 SPARTA, Inc. dba Cobham Analytic Solutions
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND SPARTA DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS. IN NO EVENT SHALL SPARTA BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#
import os, sys, time
os.environ['DJANGO_SETTINGS_MODULE'] = 'rpki.gui.settings'
from rpki.gui.cacheview import models
from rpki.rcynic import rcynic_xml_iterator
from rpki.sundial import datetime
import vobject
debug = True
def process_object(obj, model_class):
"""
do initial processing on a rcynic_object instance.
return value is a tuple: first element is a boolean value indicating whether
the object is changed/new since the last time we processed it. second
element is the db instance.
"""
if debug:
print 'processing %s at %s' % (obj.__class__.__name__, obj.uri)
q = model_class.objects.filter(uri=obj.uri)
if not q:
if debug:
print 'creating new db instance'
inst = model_class(uri=obj.uri)
else:
inst = q[0]
inst.ok = obj.ok
inst.status = obj.status
inst.timestamp = datetime.fromXMLtime(obj.timestamp).to_sql()
mtime = os.stat(obj.filename)[8]
if mtime != inst.mtime:
inst.mtime = mtime
inst.not_before = obj.notBefore.to_sql()
inst.not_after = obj.notAfter.to_sql()
# look up signing cert
q = models.Cert.objects.filter(keyid=obj.aki)
if q:
inst.issuer = q[0]
else:
sys.stderr.write('warning: unable to find signing cert with ski=%s (%s)\n' % (obj.aki, obj.issuer))
return True, inst
elif debug:
print 'object is unchanged'
inst.save()
return False, inst
def process_rescert(cert):
"""
Process a RPKI resource certificate.
"""
refresh, obj = process_object(cert, models.Cert)
if refresh:
obj.name = cert.subject
obj.keyid = cert.ski
obj.save()
# resources can change when a cert is updated
obj.asns.clear()
obj.addresses.clear()
for asr in cert.resources.asn:
if debug:
sys.stderr.write('processing %s\n' % asr)
q = models.ASRange.objects.filter(min=asr.min, max=asr.max)
if not q:
obj.asns.create(min=asr.min, max=asr.max)
else:
obj.asns.add(q[0])
for family, addrset in (4, cert.resources.v4), (6, cert.resources.v6):
for rng in addrset:
if debug:
sys.stderr.write('processing %s\n' % rng)
minaddr = str(rng.min)
maxaddr = str(rng.max)
q = models.AddressRange.objects.filter(family=family, min=minaddr, max=maxaddr)
if not q:
obj.addresses.create(family=family, min=minaddr, max=maxaddr)
else:
obj.addresses.add(q[0])
if debug:
print 'finished processing rescert at %s' % cert.uri
return obj
def process_ghostbuster(gbr):
refresh, obj = process_object(gbr, models.Ghostbuster)
if True:
#if refresh:
vcard = vobject.readOne(gbr.vcard)
if debug:
vcard.prettyPrint()
if hasattr(vcard, 'fn'):
obj.full_name = vcard.fn.value
if hasattr(vcard, 'email'):
obj.email_address = vcard.email.value
if hasattr(vcard, 'tel'):
obj.telephone = vcard.tel.value
if hasattr(vcard, 'org'):
obj.organization = vcard.org.value[0]
obj.save()
fam_map = { 'roa_prefix_set_ipv6': 6, 'roa_prefix_set_ipv4': 4 }
def process_roa(roa):
refresh, obj = process_object(roa, models.ROA)
if refresh:
obj.asid = roa.asID
obj.save()
obj.prefixes.clear()
for pfxset in roa.prefix_sets:
family = fam_map[pfxset.__class__.__name__]
for pfx in pfxset:
attrs = { 'family' : family,
'prefix': str(pfx.prefix),
'bits' : pfx.prefixlen,
'max_length': pfx.max_prefixlen }
q = models.ROAPrefix.objects.filter(**attrs)
if not q:
obj.prefixes.create(**attrs)
else:
obj.prefixes.add(q[0])
else:
obj.save()
return obj
def trydelete(seq):
"""
iterate over a sequence and attempt to delete each item. safely
ignore IntegrityError since the object may be referenced elsewhere.
"""
for o in seq:
try:
o.delete()
except IntegrityError:
pass
def garbage_collect(ts):
"""
rcynic's XML output file tells us what is currently in the cache,
but not what has been removed. we save the timestamp from the first
entry in the XML file, and remove all objects which are older.
"""
if debug:
print 'doing garbage collection'
for roa in models.ROA.objects.filter(timestamp__lt=ts):
trydelete(roa.prefixes)
roa.delete()
for cert in models.Cert.objects.filter(timestamp__lt=ts):
trydelete(cert.asns)
trydelete(cert.addresses)
cert.delete()
for gbr in models.Ghostbuster.objects.filter(timestamp__lt=ts):
gbr.delete()
dispatch = {
'rcynic_certificate': process_rescert,
'rcynic_roa' : process_roa,
'rcynic_ghostbuster': process_ghostbuster
}
def process_cache(root='/var/rcynic/data', xml_file='/var/rcynic/data/rcynic.xml'):
start = time.time()
first = True
ts = datetime.now()
for obj in rcynic_xml_iterator(root, xml_file):
r = dispatch[obj.__class__.__name__](obj)
if first:
first = False
ts = r.timestamp
garbage_collect(ts)
if debug:
stop = time.time()
sys.stdout.write('elapsed time %d seconds.\n' % (stop - start))
if __name__ == '__main__':
process_cache()
# vim:sw=4 ts=8
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