import sys
from sfa.util.faults import InsufficientRights, MissingCallerGID, MissingTrustedRoots, PermissionError, \
- BadRequestHash, ConnectionKeyGIDMismatch, SfaPermissionDenied
+ BadRequestHash, ConnectionKeyGIDMismatch, SfaPermissionDenied, CredentialNotVerifiable, Forbidden, \
+ BadArgs
from sfa.util.sfalogging import logger
from sfa.util.config import Config
from sfa.util.xrn import Xrn, get_authority
from sfa.trust.trustedroots import TrustedRoots
from sfa.trust.hierarchy import Hierarchy
from sfa.trust.sfaticket import SfaTicket
+from sfa.trust.speaksfor_util import determine_speaks_for
class Auth:
self.trusted_cert_list = TrustedRoots(self.config.get_trustedroots_dir()).get_list()
self.trusted_cert_file_list = TrustedRoots(self.config.get_trustedroots_dir()).get_file_list()
+ # do not use mutable as default argument
+ # http://docs.python-guide.org/en/latest/writing/gotchas/#mutable-default-arguments
+ def checkCredentials(self, creds, operation, xrns=None,
+ check_sliver_callback=None, options=None):
+ if xrns is None: xrns=[]
+ def log_invalid_cred(cred):
+ cred_obj=Credential(string=cred)
+ logger.debug("failed to validate credential - dump=%s"%cred_obj.dump_string(dump_parents=True))
+ error = sys.exc_info()[:2]
+ return error
+
+ # if xrns are specified they cannot be None or empty string
+ if xrns:
+ for xrn in xrns:
+ if not xrn:
+ raise BadArgs("Invalid urn or hrn")
+
- def checkCredentials(self, creds, operation, xrns=[]):
if not isinstance(xrns, list):
xrns = [xrns]
- hrns = [Xrn(xrn).hrn for xrn in xrns]
+
+ slice_xrns = Xrn.filter_type(xrns, 'slice')
+ sliver_xrns = Xrn.filter_type(xrns, 'sliver')
+
+ # we are not able to validate slivers in the traditional way so
+ # we make sure not to include sliver urns/hrns in the core validation loop
+ hrns = [Xrn(xrn).hrn for xrn in xrns if xrn not in sliver_xrns]
valid = []
if not isinstance(creds, list):
creds = [creds]
logger.debug("Auth.checkCredentials with %d creds on hrns=%s"%(len(creds),hrns))
# won't work if either creds or hrns is empty - let's make it more explicit
- if not creds: raise InsufficientRights("Access denied - no credential provided")
+ if not creds: raise Forbidden("no credential provided")
if not hrns: hrns = [None]
- for cred in creds:
- for hrn in hrns:
- try:
- self.check(cred, operation, hrn)
- valid.append(cred)
- except:
- cred_obj=Credential(cred=cred)
- logger.debug("failed to validate credential - dump=%s"%cred_obj.dump_string(dump_parents=True))
- error = sys.exc_info()[:2]
- continue
-
+ error=[None,None]
+
+ # if speaks for gid matches caller cert then we've found a valid
+ # speaks for credential
+ speaks_for_gid = determine_speaks_for(logger, creds, self.peer_cert, \
+ options, self.trusted_cert_list)
+
+ if self.peer_cert and \
+ not self.peer_cert.is_pubkey(speaks_for_gid.get_pubkey()):
+ valid = creds
+ else:
+ for cred in creds:
+ for hrn in hrns:
+ try:
+ self.check(cred, operation, hrn)
+ valid.append(cred)
+ except:
+ error = log_invalid_cred(cred)
+
+ # make sure all sliver xrns are validated against the valid credentials
+ if sliver_xrns:
+ if not check_sliver_callback:
+ msg = "sliver verification callback method not found."
+ msg += " Unable to validate sliver xrns: %s" % sliver_xrns
+ raise Forbidden(msg)
+ check_sliver_callback(valid, sliver_xrns)
+
if not len(valid):
- raise InsufficientRights('Access denied: %s -- %s' % (error[0],error[1]))
+ raise Forbidden("Invalid credential %s -- %s"%(error[0],error[1]))
return valid
self.client_cred = cred
logger.debug("Auth.check: handling hrn=%s and credential=%s"%\
(hrn,cred.get_summary_tostring()))
+
+ if cred.type not in ['geni_sfa']:
+ raise CredentialNotVerifiable(cred.type, "%s not supported" % cred.type)
self.client_gid = self.client_cred.get_gid_caller()
self.object_gid = self.client_cred.get_gid_object()