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# $Id$
# TODO:
#
# resource set stuff (resource_set_{as,ipv4,ipv6} needs its own classes
# to handle parsing and XML mustering.
import base64
import xml.sax
import glob
import re
class rpki_updown_as_set(object):
def __init__(self, s):
self.as_set = []
if s != "":
vec = s.split(",")
for elt in vec:
r = re.match("^[0-9]+$", elt)
if r:
self.as_set.append((int(elt), ))
continue
r = re.match("^([0-9]+)-([0-9]+)$", elt)
if r:
b, e = r.groups()
self.as_set.append((int(b), int(e)))
continue
raise RuntimeError
self.as_set.sort()
def __str__(self):
vec = []
for elt in self.as_set:
if len(elt) == 1:
vec.append(str(elt[0]))
else:
vec.append(str(elt[0]) + "-" + str(elt[1]))
return ",".join(vec)
class rpki_updown_msg(object):
def toXML(self):
return ('\
<?xml version="1.0" encoding="UTF-8"?>\n\
<message xmlns="http://www.apnic.net/specs/rescerts/up-down/"\n\
version="1"\n\
sender="%s"\n\
recipient="%s"\n\
msg_ref="%d"\n\
type="%s">\n' \
% (self.sender, self.recipient, self.msg_ref, self.type)
) + self.innerToXML() + "</message>\n"
def innerToXML(self):
return ""
def startElement(self, name, attrs): pass
def endElement(self, name, text): pass
class rpki_updown_cert(object):
def __init__(self, attrs):
self.cert_url = attrs.getValue("cert_url")
self.cert_ski = attrs.getValue("cert_ski")
self.cert_aki = attrs.getValue("cert_aki")
self.cert_serial = attrs.getValue("cert_serial")
self.resource_set_as = rpki_updown_as_set(attrs.getValue("resource_set_as"))
self.resource_set_ipv4 = attrs.getValue("resource_set_ipv4")
self.resource_set_ipv6 = attrs.getValue("resource_set_ipv6")
try:
self.req_resource_set_as = rpki_updown_as_set(attrs.getValue("req_resource_set_as"))
except KeyError:
self.req_resource_set_as = None
try:
self.req_resource_set_ipv4 = attrs.getValue("req_resource_set_ipv4")
except KeyError:
self.req_resource_set_ipv4 = None
try:
self.req_resource_set_ipv6 = attrs.getValue("req_resource_set_ipv6")
except KeyError:
self.req_resource_set_ipv6 = None
self.status = attrs.getValue("status")
def toXML(self):
xml = ('\
<certificate cert_url="%s"\n\
cert_ski="%s"\n\
cert_aki="%s"\n\
cert_serial="%s"\n\
resource_set_as="%s"\n\
resource_set_ipv4="%s"\n\
resource_set_ipv6="%s"\n' \
% (self.cert_url, self.cert_ski, self.cert_aki, self.cert_serial,
self.resource_set_as, self.resource_set_ipv4, self.resource_set_ipv6))
if self.req_resource_set_as:
xml += (' req_resource_set_as="%s"\n' % self.req_resource_set_as)
if self.req_resource_set_ipv4:
xml += (' req_resource_set_ipv4="%s"\n' % self.req_resource_set_ipv4)
if self.req_resource_set_ipv6:
xml += (' req_resource_set_ipv6="%s"\n' % self.req_resource_set_ipv6)
xml += (' status="%s">' % self.status)
xml += base64.b64encode(self.cert) + "</certificate>\n"
return xml
class rpki_updown_class(object):
def __init__(self, attrs):
self.class_name = attrs.getValue("class_name")
self.cert_url = attrs.getValue("cert_url")
self.cert_ski = attrs.getValue("cert_ski")
self.resource_set_as = rpki_updown_as_set(attrs.getValue("resource_set_as"))
self.resource_set_ipv4 = attrs.getValue("resource_set_ipv4")
self.resource_set_ipv6 = attrs.getValue("resource_set_ipv6")
try:
self.suggested_sia_head = attrs.getValue("suggested_sia_head")
except KeyError:
self.suggested_sia_head = None
self.certs = []
def toXML(self):
xml = ('\
<class class_name="%s"\n\
cert_url="%s"\n\
cert_ski="%s"\n\
resource_set_as="%s"\n\
resource_set_ipv4="%s"\n\
resource_set_ipv6="%s"' \
% (self.class_name, self.cert_url, self.cert_ski,
self.resource_set_as, self.resource_set_ipv4, self.resource_set_ipv6))
if self.suggested_sia_head:
xml += ('\n suggested_sia_head="%s"' % (self.suggested_sia_head))
xml += ">\n"
for cert in self.certs:
xml += cert.toXML()
xml += " <issuer>" + base64.b64encode(self.issuer) + "</issuer>\n </class>\n"
return xml
class rpki_updown_list(rpki_updown_msg):
def __str__(self):
return "RPKI list request"
class rpki_updown_list_response(rpki_updown_msg):
def __init__(self):
self.resource_classes = []
def startElement(self, name, attrs):
if name == "class":
self.resource_classes.append(rpki_updown_class(attrs))
elif name == "certificate":
self.resource_classes[-1].certs.append(rpki_updown_cert(attrs))
def endElement(self, name, text):
if name == "certificate":
self.resource_classes[-1].certs[-1].cert = base64.b64decode(text)
elif name == "issuer":
self.resource_classes[-1].issuer = base64.b64decode(text)
def innerToXML(self):
xml = ""
for c in self.resource_classes:
xml += c.toXML()
return xml
class rpki_updown_issue(rpki_updown_msg):
def startElement(self, name, attrs):
assert name == "request"
self.class_name = attrs.getValue("class_name")
try:
self.req_resource_set_as = rpki_updown_as_set(attrs.getValue("req_resource_set_as"))
except KeyError:
self.req_resource_set_as = None
try:
self.req_resource_set_ipv4 = attrs.getValue("req_resource_set_ipv4")
except KeyError:
self.req_resource_set_ipv4 = None
try:
self.req_resource_set_ipv6 = attrs.getValue("req_resource_set_ipv6")
except KeyError:
self.req_resource_set_ipv6 = None
def endElement(self, name, text):
assert name == "request"
self.pkcs10 = base64.b64decode(text)
def innerToXML(self):
xml = (' <request class_name="%s"' % self.class_name)
if self.req_resource_set_as:
xml += ('\n req_resource_set_as="%s"' % self.req_resource_set_as)
if self.req_resource_set_ipv4:
xml += ('\n req_resource_set_ipv4="%s"' % self.req_resource_set_ipv4)
if self.req_resource_set_ipv6:
xml += ('\n req_resource_set_ipv6="%s"' % self.req_resource_set_ipv6)
return xml + ">" + base64.b64encode(self.pkcs10) + "</request>\n"
class rpki_updown_issue_response(rpki_updown_list_response):
def innerToXML(self):
assert len(self.resource_classes) == 1
return rpki_updown_list_response.innerToXML(self)
class rpki_updown_revoke(rpki_updown_msg):
def __str__(self):
return 'RPKI %s class_name %s ski %s' % (self.type, self.class_name, self.ski)
def startElement(self, name, attrs):
self.class_name = attrs.getValue("class_name")
self.ski = attrs.getValue("ski")
def innerToXML(self):
return (' <key class_name="%s" ski="%s" />\n' % (self.class_name, self.ski))
class rpki_updown_revoke_response(rpki_updown_revoke): pass
class rpki_updown_error_response(rpki_updown_msg):
def __str__(self):
return "RPKI error %d" % (self.status)
def innerToXML(self):
return ' <status>%d</status>\n' % self.status
def endElement(self, name, text):
if name == "status":
self.status = int(text)
elif name == "last_message_processed":
self.last_message_processed = text
elif name == "description":
self.description = text
class rpki_updown_sax_handler(xml.sax.handler.ContentHandler):
def __init__(self):
self.text = ""
self.obj = None
def startElementNS(self, name, qname, attrs):
return self.startElement(name[1], attrs)
def endElementNS(self, name, qname):
return self.endElement(name[1])
def startElement(self, name, attrs):
if name == "message":
assert int(attrs.getValue("version")) == 1
type = attrs.getValue("type")
if self.obj == None:
self.obj = {
"list" : rpki_updown_list(),
"list_response" : rpki_updown_list_response(),
"issue" : rpki_updown_issue(),
"issue_response" : rpki_updown_issue_response(),
"revoke" : rpki_updown_revoke(),
"revoke_response" : rpki_updown_revoke_response(),
"error_response" : rpki_updown_error_response()
}[type]
assert self.obj != None
self.obj.type = type
self.obj.sender = attrs.getValue("sender")
self.obj.recipient = attrs.getValue("recipient")
self.obj.msg_ref = int(attrs.getValue("msg_ref"))
else:
assert self.obj != None
self.obj.startElement(name, attrs)
def characters(self, content):
self.text += content
def endElement(self, name):
assert self.obj != None
if name != "message":
self.obj.endElement(name, self.text)
self.text = ""
files = glob.glob("up-down-protocol-samples/*.xml")
files.sort()
for f in files:
# try:
parser = xml.sax.make_parser()
handler = rpki_updown_sax_handler()
parser.setContentHandler(handler)
parser.parse(f)
obj = handler.obj
print "-- " + str(obj) + "\n"
print obj.toXML()
# except Exception, err:
# print "? " + str(err) + "\n"
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