#
import sys
-from sfa.util.faults import InsufficientRights, MissingCallerGID, MissingTrustedRoots, PermissionError, \
- BadRequestHash, ConnectionKeyGIDMismatch, SfaPermissionDenied
+from sfa.util.faults import InsufficientRights, MissingCallerGID, \
+ MissingTrustedRoots, PermissionError, BadRequestHash, \
+ ConnectionKeyGIDMismatch, SfaPermissionDenied, CredentialNotVerifiable, \
+ Forbidden, BadArgs
from sfa.util.sfalogging import logger
+from sfa.util.py23 import StringType
from sfa.util.config import Config
-from sfa.util.xrn import get_authority
+from sfa.util.xrn import Xrn, get_authority
from sfa.trust.gid import GID
from sfa.trust.rights import Rights
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 = []
+ error = (None, None)
+ def log_invalid_cred(cred):
+ if not isinstance (cred, StringType):
+ logger.info("cannot validate credential %s - expecting a string"%cred)
+ error = ('TypeMismatch',
+ "checkCredentials: expected a string, received {} -- {}"
+ .format(type(cred), 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, hrn = None):
+ if not isinstance(xrns, list):
+ xrns = [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"%len(creds))
- for cred in creds:
- try:
- self.check(cred, operation, hrn)
- valid.append(cred)
- except:
- 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]
- continue
-
+ 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 Forbidden("no credential provided")
+ if not hrns: hrns = [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:
+ 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
-
- def check(self, cred, operation, hrn = None):
+ 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
the specified operation.
"""
- self.client_cred = Credential(string = cred)
+ cred = Credential(cred=credential)
+ self.client_cred = cred
+ logger.debug("Auth.check: handling hrn=%s and credential=%s"%\
+ (hrn,cred.pretty_cred()))
+
+ 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()
# 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)
raise PermissionError(name)
- def determine_user_rights(self, caller_hrn, record):
+ def determine_user_rights(self, caller_hrn, reg_record):
"""
Given a user credential and a record, determine what set of rights the
user should have to that record.
- This is intended to replace determine_rights() and
+ This is intended to replace determine_user_rights() and
verify_cancreate_credential()
"""
rl = Rights()
- type = record['type']
-
-
- if type=="slice":
- researchers = record.get("researcher", [])
- pis = record.get("PI", [])
- if (caller_hrn in researchers + pis):
- rl.add("refresh")
- rl.add("embed")
- rl.add("bind")
- rl.add("control")
- rl.add("info")
-
- elif type == "authority":
- pis = record.get("PI", [])
- operators = record.get("operator", [])
+ type = reg_record.type
+
+ 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
+ researcher_hrns = [ user.hrn for user in reg_record.reg_researchers ]
+ # locating PIs attached to that slice
+ slice_pis = reg_record.get_pis()
+ pi_hrns = [ user.hrn for user in slice_pis ]
+ if (caller_hrn in researcher_hrns + pi_hrns):
+ rl.add('refresh')
+ rl.add('embed')
+ rl.add('bind')
+ rl.add('control')
+ rl.add('info')
+
+ elif type == 'authority':
+ pi_hrns = [ user.hrn for user in reg_record.reg_pis ]
if (caller_hrn == self.config.SFA_INTERFACE_HRN):
- rl.add("authority")
- rl.add("sa")
- rl.add("ma")
- if (caller_hrn in pis):
- rl.add("authority")
- rl.add("sa")
- if (caller_hrn in operators):
- rl.add("authority")
- rl.add("ma")
-
- elif type == "user":
- rl.add("refresh")
- rl.add("resolve")
- rl.add("info")
-
- elif type == "node":
- rl.add("operator")
+ rl.add('authority')
+ rl.add('sa')
+ rl.add('ma')
+ if (caller_hrn in pi_hrns):
+ rl.add('authority')
+ rl.add('sa')
+ # NOTE: for the PL implementation, this 'operators' list
+ # amounted to users with 'tech' role in that site
+ # it seems like this is not needed any longer, so for now I just drop that
+ # operator_hrns = reg_record.get('operator',[])
+ # if (caller_hrn in operator_hrns):
+ # rl.add('authority')
+ # rl.add('ma')
+
+ elif type == 'user':
+ rl.add('refresh')
+ rl.add('resolve')
+ rl.add('info')
+
+ elif type == 'node':
+ rl.add('operator')
return rl
git://git.onelab.eu / sfa.git / blobdiff