# Credentials are signed XML files that assign a subject gid privileges to an object gid
##
-### $Id$
-### $URL$
-
import os
import datetime
from tempfile import mkstemp
+import dateutil.parser
+from StringIO import StringIO
from xml.dom.minidom import Document, parseString
-from dateutil.parser import parse
+from lxml import etree
from sfa.util.faults import *
-from sfa.util.sfalogging import sfa_logger
+from sfa.util.sfalogging import logger
from sfa.trust.certificate import Keypair
from sfa.trust.credential_legacy import CredentialLegacy
from sfa.trust.rights import Right, Rights
from sfa.trust.gid import GID
-from sfa.util.namespace import *
+from sfa.util.xrn import urn_to_hrn
# 2 weeks, in seconds
DEFAULT_CREDENTIAL_LIFETIME = 86400 * 14
# Convert a string into a bool
def str2bool(str):
- if str.lower() in ['yes','true','1']:
+ if str.lower() in ['true','1']:
return True
return False
str = string
elif filename:
str = file(filename).read()
+ self.filename=filename
if str.strip().startswith("-----"):
self.legacy = CredentialLegacy(False,string=str)
f = open(filename, "w")
f.write(self.xml)
f.close()
+ self.filename=filename
def save_to_string(self, save_parents=True):
if not self.xml:
self.set_refid(cred.getAttribute("xml:id"))
- self.set_expiration(parse(getTextNode(cred, "expires")))
+ self.set_expiration(dateutil.parser.parse(getTextNode(cred, "expires")))
self.gidCaller = GID(string=getTextNode(cred, "owner_gid"))
self.gidObject = GID(string=getTextNode(cred, "target_gid"))
# must be done elsewhere
#
# @param trusted_certs: The certificates of trusted CA certificates
- def verify(self, trusted_certs):
+ # @param schema: The RelaxNG schema to validate the credential against
+ def verify(self, trusted_certs, schema=None):
if not self.xml:
self.decode()
+
+ # validate against RelaxNG schema
+ if not self.legacy:
+ if schema and os.path.exists(schema):
+ tree = etree.parse(StringIO(self.xml))
+ schema_doc = etree.parse(schema)
+ xmlschema = etree.XMLSchema(schema_doc)
+ if not xmlschema.validate(tree):
+ error = xmlschema.error_log.last_error
+ message = "%s (line %s)" % (error.message, error.line)
+ raise CredentialNotVerifiable(message)
+
-# trusted_cert_objects = [GID(filename=f) for f in trusted_certs]
+# trusted_cert_objects = [GID(filename=f) for f in trusted_certs]
trusted_cert_objects = []
ok_trusted_certs = []
for f in trusted_certs:
trusted_cert_objects.append(GID(filename=f))
ok_trusted_certs.append(f)
except Exception, exc:
- sfa_logger.error("Failed to load trusted cert from %s: %r", f, exc)
+ logger.error("Failed to load trusted cert from %s: %r"%( f, exc))
trusted_certs = ok_trusted_certs
# Use legacy verification if this is a legacy credential
if self.legacy.object_gid:
self.legacy.object_gid.verify_chain(trusted_cert_objects)
return True
+
# make sure it is not expired
if self.get_expiration() < datetime.datetime.utcnow():
# Maybe should be (hrn, type) = urn_to_hrn(root_cred_signer.get_urn())
root_cred_signer_type = root_cred_signer.get_type()
if (root_cred_signer_type == 'authority'):
- #sfa_logger.debug('Cred signer is an authority')
+ #logger.debug('Cred signer is an authority')
# signer is an authority, see if target is in authority's domain
hrn = root_cred_signer.get_hrn()
if root_target_gid.get_hrn().startswith(hrn):
dcred.sign()
return dcred
- ##
- # Dump the contents of a credential to stdout in human-readable format
- #
- # @param dump_parents If true, also dump the parent certificates
-
- def dump(self, dump_parents=False):
- print "CREDENTIAL", self.get_subject()
- print " privs:", self.get_privileges().save_to_string()
+ # only informative
+ def get_filename(self):
+ return getattr(self,'filename',None)
- print " gidCaller:"
+ # @param dump_parents If true, also dump the parent certificates
+ def dump (self, *args, **kwargs):
+ print self.dump_string(*args, **kwargs)
+
+ def dump_string(self, dump_parents=False):
+ result=""
+ result += "CREDENTIAL %s\n" % self.get_subject()
+ filename=self.get_filename()
+ if filename: result += "Filename %s\n"%filename
+ result += " privs: %s\n" % self.get_privileges().save_to_string()
gidCaller = self.get_gid_caller()
if gidCaller:
- gidCaller.dump(8, dump_parents)
+ result += " gidCaller:\n"
+ result += gidCaller.dump_string(8, dump_parents)
+
+ if self.get_signature():
+ print " gidIssuer:"
+ self.get_signature().get_issuer_gid().dump(8, dump_parents)
- print " gidObject:"
gidObject = self.get_gid_object()
if gidObject:
- gidObject.dump(8, dump_parents)
-
+ result += " gidObject:\n"
+ result += gidObject.dump_string(8, dump_parents)
if self.parent and dump_parents:
- print "PARENT",
- self.parent.dump_parents()
+ result += "\nPARENT"
+ result += self.parent.dump(True)
+
+ return result
git://git.onelab.eu / sfa.git / blobdiff