sfa/managers/registry_manager_openstack.py

   1 import types
   2 # for get_key_from_incoming_ip
   3 import tempfile
   4 import os
   5 import commands
   6
   7 from sfa.util.faults import RecordNotFound, AccountNotEnabled, PermissionError, MissingAuthority, \
   8     UnknownSfaType, ExistingRecord, NonExistingRecord
   9 from sfa.util.sfatime import utcparse, datetime_to_epoch
  10 from sfa.util.prefixTree import prefixTree
  11 from sfa.util.xrn import Xrn, get_authority, hrn_to_urn, urn_to_hrn
  12 from sfa.util.version import version_core
  13 from sfa.util.sfalogging import logger
  14
  15 from sfa.trust.gid import GID
  16 from sfa.trust.credential import Credential
  17 from sfa.trust.certificate import Certificate, Keypair, convert_public_key
  18 from sfa.trust.gid import create_uuid
  19
  20 from sfa.storage.model import make_record,RegRecord
  21 from sfa.storage.alchemy import dbsession
  22
  23 from sfa.managers.registry_manager import RegistryManager
  24
  25 class RegistryManager(RegistryManager):
  26
  27     def GetCredential(self, api, xrn, type, caller_xrn = None):
  28         # convert xrn to hrn
  29         if type:
  30             hrn = urn_to_hrn(xrn)[0]
  31         else:
  32             hrn, type = urn_to_hrn(xrn)
  33
  34         # Is this a root or sub authority
  35         auth_hrn = api.auth.get_authority(hrn)
  36         if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN:
  37             auth_hrn = hrn
  38         auth_info = api.auth.get_auth_info(auth_hrn)
  39         # get record info
  40         record=dbsession.query(RegRecord).filter_by(hrn=hrn).first()
  41         if type:
  42             record = record.filter_by(type=type)
  43         if not record:
  44             raise RecordNotFound("hrn=%s, type=%s"%(hrn,type))
  45
  46         # verify_cancreate_credential requires that the member lists
  47         # (researchers, pis, etc) be filled in
  48         logger.debug("get credential before augment dict, keys=%s"%record.__dict__.keys())
  49         self.driver.augment_records_with_testbed_info (record.__dict__)
  50         logger.debug("get credential after augment dict, keys=%s"%record.__dict__.keys())
  51         if not self.driver.is_enabled (record.__dict__):
  52               raise AccountNotEnabled(": PlanetLab account %s is not enabled. Please contact your site PI" %(record.email))
  53
  54         # get the callers gid
  55         # if caller_xrn is not specified assume the caller is the record
  56         # object itself.
  57         if not caller_xrn:
  58             caller_hrn = hrn
  59             caller_gid = record.get_gid_object()
  60         else:
  61             caller_hrn, caller_type = urn_to_hrn(caller_xrn)
  62             caller_record = dbsession.query(RegRecord).filter_by(hrn=caller_hrn).first()
  63             if caller_type:
  64                 caller_record = caller_record.filter_by(type=caller_type)
  65             if not caller_record:
  66                 raise RecordNotFound("Unable to associated caller (hrn=%s, type=%s) with credential for (hrn: %s, type: %s)"%(caller_hrn, caller_type, hrn, type))
  67             caller_gid = GID(string=caller_record.gid)
  68
  69         object_hrn = record.get_gid_object().get_hrn()
  70         rights = api.auth.determine_user_rights(caller_hrn, record)
  71         # make sure caller has rights to this object
  72         if rights.is_empty():
  73             raise PermissionError(caller_hrn + " has no rights to " + record.hrn)
  74
  75         object_gid = GID(string=record.gid)
  76         new_cred = Credential(subject = object_gid.get_subject())
  77         new_cred.set_gid_caller(caller_gid)
  78         new_cred.set_gid_object(object_gid)
  79         new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
  80         #new_cred.set_pubkey(object_gid.get_pubkey())
  81         new_cred.set_privileges(rights)
  82         new_cred.get_privileges().delegate_all_privileges(True)
  83         if hasattr(record,'expires'):
  84             date = utcparse(record.expires)
  85             expires = datetime_to_epoch(date)
  86             new_cred.set_expiration(int(expires))
  87         auth_kind = "authority,ma,sa"
  88         # Parent not necessary, verify with certs
  89         #new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
  90         new_cred.encode()
  91         new_cred.sign()
  92
  93         return new_cred.save_to_string(save_parents=True)
  94
  95
  96     # subject_record describes the subject of the relationships
  97     # ref_record contains the target values for the various relationships we need to manage
  98     # (to begin with, this is just the slice x person relationship)
  99     def update_relations (self, subject_obj, ref_obj):
 100         type=subject_obj.type
 101         if type=='slice':
 102             self.update_relation(subject_obj, 'researcher', ref_obj.researcher, 'user')
 103
 104     # field_key is the name of one field in the record, typically 'researcher' for a 'slice' record
 105     # hrns is the list of hrns that should be linked to the subject from now on
 106     # target_type would be e.g. 'user' in the 'slice' x 'researcher' example
 107     def update_relation (self, record_obj, field_key, hrns, target_type):
 108         # locate the linked objects in our db
 109         subject_type=record_obj.type
 110         subject_id=record_obj.pointer
 111         # get the 'pointer' field of all matching records
 112         link_id_tuples = dbsession.query(RegRecord.pointer).filter_by(type=target_type).filter(RegRecord.hrn.in_(hrns)).all()
 113         # sqlalchemy returns named tuples for columns
 114         link_ids = [ tuple.pointer for tuple in link_id_tuples ]
 115         self.driver.update_relation (subject_type, target_type, subject_id, link_ids)
 116