# SfaAPI authentication
#
import sys
+from types import StringTypes
-from sfa.util.faults import InsufficientRights, MissingCallerGID, MissingTrustedRoots, PermissionError, \
- BadRequestHash, ConnectionKeyGIDMismatch, SfaPermissionDenied, CredentialNotVerifiable, Forbidden,
- BadArgs
+from sfa.util.faults import InsufficientRights, MissingCallerGID, \
+ MissingTrustedRoots, PermissionError, 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.load_trusted_certs()
def load_trusted_certs(self):
- 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()
+ 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()
+
+ # this convenience methods extracts speaking_for_xrn
+ # from the passed options using 'geni_speaking_for'
+ def checkCredentialsSpeaksFor (self, *args, **kwds):
+ if 'options' not in kwds:
+ logger.error ("checkCredentialsSpeaksFor was not passed options=options")
+ return
+ # remove the options arg
+ options=kwds['options']; del kwds['options']
+ # compute the speaking_for_xrn arg and pass it to checkCredentials
+ if options is None: speaking_for_xrn=None
+ else: speaking_for_xrn=options.get('geni_speaking_for',None)
+ kwds['speaking_for_xrn']=speaking_for_xrn
+ return self.checkCredentials (*args, **kwds)
+
+ # 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,
+ speaking_for_xrn=None):
+ if xrns is None: xrns=[]
+ def log_invalid_cred(cred):
+ if not isinstance (cred, StringTypes):
+ logger.info("cannot validate credential %s - expecting a string"%cred)
+ error="checkCredentials: expected a string, received %s"%(type(cred))
+ else:
+ cred_obj=Credential(string=cred)
+ logger.info("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=[], check_sliver_callback=None):
+
if not isinstance(xrns, list):
xrns = [xrns]
- slice_xrns = Xrn.filter_type(xrns, 'slice')
+ 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
# won't work if either creds or hrns is empty - let's make it more explicit
if not creds: raise Forbidden("no credential provided")
if not hrns: hrns = [None]
- for cred in creds:
- for hrn in hrns:
- # if an hrn is specified it cannot be None or empty string
- if not hrn:
- raise BadArgs("Invalid urn or hrn: %s" % hrn)
-
- 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]
+
+ speaks_for_gid = determine_speaks_for(logger, creds, self.peer_cert,
+ speaking_for_xrn, 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:
check_sliver_callback(valid, sliver_xrns)
if not len(valid):
- raise Forbidden("Invalid credential")
+ raise Forbidden("Invalid credential %s -- %s"%(error[0],error[1]))
return valid
def check(self, credential, operation, hrn = None):
"""
- Check the credential against the peer cert (callerGID included
+ Check the credential against the peer cert (callerGID) included
in the credential matches the caller that is connected to the
HTTPS connection, check if the credential was signed by a
trusted cert and check if the credential is allowed to perform
cred = Credential(cred=credential)
self.client_cred = cred
logger.debug("Auth.check: handling hrn=%s and credential=%s"%\
- (hrn,cred.get_summary_tostring()))
+ (hrn,cred.pretty_cred()))
if cred.type not in ['geni_sfa']:
raise CredentialNotVerifiable(cred.type, "%s not supported" % cred.type)
# make sure the client_gid is not blank
if not self.client_gid:
- raise MissingCallerGID(self.client_cred.get_subject())
+ raise MissingCallerGID(self.client_cred.pretty_subject())
# validate the client cert if it exists
if self.peer_cert:
raise InsufficientRights(operation)
if self.trusted_cert_list:
- self.client_cred.verify(self.trusted_cert_file_list, self.config.SFA_CREDENTIAL_SCHEMA)
+ self.client_cred.verify(self.trusted_cert_file_list,
+ self.config.SFA_CREDENTIAL_SCHEMA)
else:
raise MissingTrustedRoots(self.config.get_trustedroots_dir())
def check_ticket(self, ticket):
"""
- Check if the tickt was signed by a trusted cert
+ Check if the ticket was signed by a trusted cert
"""
if self.trusted_cert_list:
client_ticket = SfaTicket(string=ticket)
rl = Rights()
type = reg_record.type
- logger.debug("entering determine_user_rights with record %s and caller_hrn %s"%(reg_record, caller_hrn))
+ logger.debug("entering determine_user_rights with record %s and caller_hrn %s"%\
+ (reg_record, caller_hrn))
if type == 'slice':
# researchers in the slice are in the DB as-is
git://git.onelab.eu / sfa.git / blobdiff