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# $Id$
"""Command line program to simulate behavior of the IR back-end.
This only handles the control channel. The query back-channel will be
a separate program.
"""
import glob, getopt, sys, lxml.etree, POW.pkix, xml.sax, lxml.sax
import rpki.left_right, rpki.relaxng, rpki.cms, rpki.https, rpki.x509, rpki.config
# Kludge around current test setup all being PEM rather than DER format
convert_from_pem = True
def read_cert(filename):
"""Read a certificate file from disk."""
if convert_from_pem:
cert = rpki.x509.X509(PEM_file=filename)
else:
cert = rpki.x509.X509(DER_file=filename)
return cert.get_POWpkix()
class command(object):
"""Command processor mixin class for left-right protocol objects.
This class and its derived classes probably should be merged into
the left-right protocol classes, once this stuff is stable.
"""
elements = ()
def getopt(self, argv):
"""Parse options for this class."""
opts, args = getopt.getopt(argv, "",
[x + "=" for x in self.attributes + self.elements] + list(self.booleans))
for o, a in opts:
o = o[2:]
handler = getattr(self, "handle_" + o, None)
if handler is not None:
handler(a)
elif o in self.booleans:
setattr(self, o, True)
else:
assert o in self.attributes
setattr(self, o, a)
return args
def process(self, msg, argv):
"""Parse options and add the current object into the msg we're building.
This is a separate method because at one point I needed to
override it.
"""
argv = self.getopt(argv)
msg.append(self)
return argv
def handle_action(self, arg):
"""Special handler for --action option."""
self.action = arg
self.type = "query"
def handle_peer_ta(self, arg):
"""Special handler for --peer_ta option."""
self.peer_ta = read_cert(arg)
class self(command, rpki.left_right.self_elt):
'''"self" command.'''
elements = ("extension_preference",)
def handle_extension_preference(self, arg):
"""--extension_preferences option."""
k,v = arg.split("=", 1)
pref = rpki.left_right.extension_preference_elt()
pref.name = k
pref.value = v
self.prefs.append(pref)
class bsc(command, rpki.left_right.bsc_elt):
'''"bsc" command.'''
elements = ('signing_cert',)
def handle_signing_cert(self, arg):
"""--signing_cert option."""
self.signing_cert.append(read_cert(arg))
class parent(command, rpki.left_right.parent_elt):
'''"parent" command.'''
elements = ("peer_ta",)
class child(command, rpki.left_right.child_elt):
'''"child" command.'''
elements = ("peer_ta",)
class repository(command, rpki.left_right.repository_elt):
'''"repository" command.'''
elements = ("peer_ta",)
class route_origin(command, rpki.left_right.route_origin_elt):
'''"route_origin" command.'''
def handle_asn(self, arg):
"""Handle autonomous sequence numbers."""
self.asn = long(arg)
def handle_ipv4(self, arg):
"""Handle IPv4 addresses."""
self.ipv4 = resource_set.resource_set_ipv4(arg)
def handle_ipv6(self, arg):
"""Handle IPv6 addresses."""
self.ipv6 = resource_set.resource_set_ipv6(arg)
dispatch = dict((x.element_name, x) for x in (self, bsc, parent, child, repository, route_origin))
def usage():
print "Usage:", sys.argv[0]
for k,v in dispatch.iteritems():
print " ", k, \
" ".join(["--" + x + "=" for x in v.attributes + v.elements]), \
" ".join(["--" + x for x in v.booleans])
sys.exit(1)
def main():
"""Main program.
Work in progress. At the moment it gets as far as transmitting the
generated request, but doesn't yet do anything with responses.
"""
cfg = rpki.config.parser("irbe.conf")
section = "irbe-cli"
rng = rpki.relaxng.RelaxNG(cfg.get(section, "rng-schema"))
privateKey = rpki.x509.RSA_Keypair(PEM_file = cfg.get(section, "https-key"))
certChain = rpki.x509.X509_chain()
certChain.load_from_PEM(cfg.multiget(section, "https-cert"))
x509TrustList = rpki.x509.X509_chain()
x509TrustList.load_from_PEM(cfg.multiget(section, "https-ta"))
q_msg = rpki.left_right.msg()
argv = sys.argv[1:]
if not argv:
usage()
else:
while argv:
try:
cmd = dispatch[argv[0]]()
except KeyError:
usage()
argv = cmd.process(q_msg, argv[1:])
q_elt = q_msg.toXML()
q_xml = lxml.etree.tostring(q_elt, pretty_print=True, encoding="us-ascii", xml_declaration=True)
try:
rng.assertValid(q_elt)
except lxml.etree.DocumentInvalid:
print "Generated request document doesn't pass schema check:"
print q_xml
sys.exit(1)
print "Sending:"
print q_xml
q_cms = rpki.cms.encode(q_xml, cfg.get(section, "cms-key"), cfg.multiget(section, "cms-cert"))
r_cms = rpki.https.client(privateKey=privateKey, certChain=certChain, x509TrustList=x509TrustList,
msg=q_cms, url="/left-right")
r_xml = rpki.cms.decode(r_cms, cfg.get(section, "cms-ta"))
r_elt = lxml.etree.fromstring(r_xml)
try:
rng.assertValid(r_elt)
except lxml.etree.DocumentInvalid:
print "Received reply document doesn't pass schema check:"
print r_xml
sys.exit(1)
print "Received:"
print r_xml
if False:
handler = rpki.left_right.sax_handler()
lxml.sax.saxify(r_elt, handler)
r_msg = handler.result
# Do something useful with reply here
if __name__ == "__main__": main()
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