def verify_chain(self, trusted_certs = None):
# do the normal certificate verification stuff
trusted_root = Certificate.verify_chain(self, trusted_certs)
if self.parent:
# make sure the parent's hrn is a prefix of the child's hrn
if not hrn_authfor_hrn(self.parent.get_hrn(), self.get_hrn()):
raise GidParentHrn("This cert HRN %s isn't in the namespace for parent HRN %s" % (self.get_hrn(), self.parent.get_hrn()))
# Parent must also be an authority (of some type) to sign a GID
# There are multiple types of authority - accept them all here
if not self.parent.get_type().find('authority') == 0:
raise GidInvalidParentHrn("This cert %s's parent %s is not an authority (is a %s)" % (self.get_hrn(), self.parent.get_hrn(), self.parent.get_type()))
# Then recurse up the chain - ensure the parent is a trusted
# root or is in the namespace of a trusted root
self.parent.verify_chain(trusted_certs)
else:
# make sure that the trusted root's hrn is a prefix of the child's
trusted_gid = GID(string=trusted_root.save_to_string())
trusted_type = trusted_gid.get_type()
trusted_hrn = trusted_gid.get_hrn()
#if trusted_type == 'authority':
# trusted_hrn = trusted_hrn[:trusted_hrn.rindex('.')]
cur_hrn = self.get_hrn()
if not hrn_authfor_hrn(trusted_hrn, cur_hrn):
raise GidParentHrn("Trusted root with HRN %s isn't a namespace authority for this cert: %s" % (trusted_hrn, cur_hrn))
# There are multiple types of authority - accept them all here
if not trusted_type.find('authority') == 0:
raise GidInvalidParentHrn("This cert %s's trusted root signer %s is not an authority (is a %s)" % (self.get_hrn(), trusted_hrn, trusted_type))
return
def verify_chain(self, trusted_certs = None):
# do the normal certificate verification stuff
trusted_root = Certificate.verify_chain(self, trusted_certs)
if self.parent:
# make sure the parent's hrn is a prefix of the child's hrn
if not hrn_authfor_hrn(self.parent.get_hrn(), self.get_hrn()):
raise GidParentHrn("This cert HRN %s isn't in the namespace for parent HRN %s" % (self.get_hrn(), self.parent.get_hrn()))
# Parent must also be an authority (of some type) to sign a GID
# There are multiple types of authority - accept them all here
if not self.parent.get_type().find('authority') == 0:
raise GidInvalidParentHrn("This cert %s's parent %s is not an authority (is a %s)" % (self.get_hrn(), self.parent.get_hrn(), self.parent.get_type()))
# Then recurse up the chain - ensure the parent is a trusted
# root or is in the namespace of a trusted root
self.parent.verify_chain(trusted_certs)
else:
# make sure that the trusted root's hrn is a prefix of the child's
trusted_gid = GID(string=trusted_root.save_to_string())
trusted_type = trusted_gid.get_type()
trusted_hrn = trusted_gid.get_hrn()
#if trusted_type == 'authority':
# trusted_hrn = trusted_hrn[:trusted_hrn.rindex('.')]
cur_hrn = self.get_hrn()
if not hrn_authfor_hrn(trusted_hrn, cur_hrn):
raise GidParentHrn("Trusted root with HRN %s isn't a namespace authority for this cert %s" % (trusted_hrn, cur_hrn))
# There are multiple types of authority - accept them all here
if not trusted_type.find('authority') == 0:
raise GidInvalidParentHrn("This cert %s's trusted root signer %s is not an authority (is a %s)" % (self.get_hrn(), trusted_hrn, trusted_type))
return
def verify_chain(self, trusted_certs = None):
# do the normal certificate verification stuff
Certificate.verify_chain(self, trusted_certs)
if self.parent:
# make sure the parent delegated rights to the child
if not self.parent.get_delegate():
raise MissingDelegateBit(self.parent.get_subject())
# make sure the rights given to the child are a subset of the
# parents rights
if not self.parent.get_privileges().is_superset(self.get_privileges()):
raise ChildRightsNotSubsetOfParent(self.get_subject()
+ " " + self.parent.get_privileges().save_to_string()
+ " " + self.get_privileges().save_to_string())
return
def verify_chain(self, trusted_certs=None):
# do the normal certificate verification stuff
Certificate.verify_chain(self, trusted_certs)
if self.parent:
# make sure the parent delegated rights to the child
if not self.parent.get_delegate():
raise MissingDelegateBit(self.parent.get_subject())
# make sure the rights given to the child are a subset of the
# parents rights
if not self.parent.get_privileges().is_superset(
self.get_privileges()):
raise ChildRightsNotSubsetOfParent(
self.get_subject() + " " +
self.parent.get_privileges().save_to_string() + " " +
self.get_privileges().save_to_string())
return
def test_parents(self):
cert_root = Certificate(subject="root")
key_root = Keypair(create=True)
cert_root.set_pubkey(key_root)
cert_root.set_issuer(key_root, "root")
cert_root.sign()
cert1 = Certificate(subject="one")
key1 = Keypair(create=True)
cert1.set_pubkey(key1)
cert1.set_issuer(key_root, "root")
cert1.sign()
cert2 = Certificate(subject="two")
key2 = Keypair(create=True)
cert2.set_pubkey(key2)
cert2.set_issuer(key1, cert=cert1)
cert2.set_parent(cert1)
cert2.sign()
cert3 = Certificate(subject="three")
key3 = Keypair(create=True)
cert3.set_pubkey(key3)
cert3.set_issuer(key2, cert=cert2)
cert3.set_parent(cert2)
cert3.sign()
self.assert_(cert1.verify(key_root))
self.assert_(cert2.is_signed_by_cert(cert1))
self.assert_(cert3.is_signed_by_cert(cert2))
cert3.verify_chain([cert_root])
# now save the chain to a string and load it into a new certificate
str_chain = cert3.save_to_string(save_parents=True)
cert4 = Certificate(string = str_chain)
# verify the newly loaded chain still verifies
cert4.verify_chain([cert_root])
# verify the parentage
self.assertEqual(cert4.get_parent().get_subject(), "two")
self.assertEqual(cert4.get_parent().get_parent().get_subject(), "one")
def verify_chain(self, trusted_certs = None):
# do the normal certificate verification stuff
trusted_root = Certificate.verify_chain(self, trusted_certs)
if self.parent:
# make sure the parent's hrn is a prefix of the child's hrn
if not self.get_hrn().startswith(self.parent.get_hrn()):
#print self.get_hrn(), " ", self.parent.get_hrn()
raise GidParentHrn("This cert %s HRN doesnt start with parent HRN %s" % (self.get_hrn(), self.parent.get_hrn()))
else:
# make sure that the trusted root's hrn is a prefix of the child's
trusted_gid = GID(string=trusted_root.save_to_string())
trusted_type = trusted_gid.get_type()
trusted_hrn = trusted_gid.get_hrn()
#if trusted_type == 'authority':
# trusted_hrn = trusted_hrn[:trusted_hrn.rindex('.')]
cur_hrn = self.get_hrn()
if not self.get_hrn().startswith(trusted_hrn):
raise GidParentHrn("Trusted roots HRN %s isnt start of this cert %s" % (trusted_hrn, cur_hrn))
return
