- def get_self_credential(self, type, hrn, request_hash):
- """
- get_self_credential a degenerate version of get_credential used by a client
- to get his initial credential when de doesnt have one. This is the same as
- get_credetial(..., cred = None, ...)
-
- The registry ensures that the client is the principal that is named by
- (type, name) by comparing the public key in the record's GID to the
- private key used to encrypt the client side of the HTTPS connection. Thus
- it is impossible for one principal to retrive another principal's
- credential without having the appropriate private key.
-
- @param type type of object (user | slice | sa | ma | node)
- @param hrn human readable name of authority to list
- @return string representation of a credential object
- """
- self.api.auth.verify_object_belongs_to_me(hrn)
- auth_hrn = self.api.auth.get_authority(hrn)
-
- # if this is a root or sub authority get_authority will return
- # an empty string
- if not auth_hrn or hrn == self.api.config.SFA_INTERFACE_HRN:
- auth_hrn = hrn
-
- auth_info = self.api.auth.get_auth_info(auth_hrn)
-
- # find a record that matches
- record = None
- table = GeniTable()
- records = table.findObjects({'type': type, 'hrn': hrn})
- if not records:
- raise RecordNotFound(hrn)
- record = records[0]
- gid = record.get_gid_object()
- rights = self.api.auth.determine_user_rights(None, record)
- if rights.is_empty():
- raise PermissionError(gid.get_hrn() + " has no rights to " + record.get_name())
-
- # authenticate the gid
- gid_str = gid.save_to_string(save_parents=True)
- self.api.auth.authenticateGid(gid_str, [None, type, hrn], request_hash)
-
- # create the credential
- gid = record.get_gid_object()
- cred = Credential(subject = gid.get_subject())
- cred.set_gid_caller(gid)
- cred.set_gid_object(gid)
- cred.set_issuer(key=auth_info.get_pkey_object(), subject=auth_hrn)
- cred.set_pubkey(gid.get_pubkey())
- cred.set_privileges(rights)
- cred.set_delegate(True)
-
- auth_kind = "authority,sa,ma"
- cred.set_parent(self.api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
-
- cred.encode()
- cred.sign()
- return cred.save_to_string(save_parents=True)