X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sfa%2Ftrust%2Fauth.py;h=512c58bdbc9dd42a3e0c5aab30a8ff3c04fc0a0c;hb=30d9951e075d93127c3909dcb41be09b420b3525;hp=fcd4f75376abcd521ba262da8f3a72749105f7fb;hpb=c0c8481d828f3172bdd982116d07e6a2de9049c5;p=sfa.git diff --git a/sfa/trust/auth.py b/sfa/trust/auth.py index fcd4f753..512c58bd 100644 --- a/sfa/trust/auth.py +++ b/sfa/trust/auth.py @@ -3,9 +3,12 @@ # import sys -from sfa.util.faults import InsufficientRights, MissingCallerGID, MissingTrustedRoots, PermissionError, \ - BadRequestHash, ConnectionKeyGIDMismatch, SfaPermissionDenied, CredentialNotVerifiable, Forbidden +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 Xrn, get_authority @@ -16,6 +19,7 @@ from sfa.trust.credential import Credential 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: @@ -31,14 +35,56 @@ 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, 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 @@ -51,16 +97,21 @@ class Auth: # 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: - 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 + + 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: @@ -71,14 +122,13 @@ class Auth: 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 @@ -87,7 +137,7 @@ class Auth: 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) @@ -96,7 +146,7 @@ class Auth: # 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: @@ -108,7 +158,8 @@ class Auth: 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()) @@ -124,7 +175,7 @@ class Auth: 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) @@ -271,13 +322,14 @@ class Auth: 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 researcher_hrns = [ user.hrn for user in reg_record.reg_researchers ] # locating PIs attached to that slice - slice_pis=reg_record.get_pis() + 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')