#
# implements SFA tickets
#

import xmlrpclib

from sfa.trust.certificate import Certificate
from sfa.trust.rights import *
from sfa.trust.gid import *

# Ticket is tuple:
#   (gidCaller, gidObject, attributes, rspec, delegate)
#
#    gidCaller = GID of the caller performing the operation
#    gidObject = GID of the slice
#    attributes = slice attributes (keys, vref, instantiation, etc)
#    rspec = resources

class SfaTicket(Certificate):
    gidCaller = None
    gidObject = None
    attributes = {}
    rspec = {}
    delegate = False

    def __init__(self, create=False, subject=None, string=None, filename=None):
        Certificate.__init__(self, create, subject, string, filename)

    def set_gid_caller(self, gid):
        self.gidCaller = gid

    def get_gid_caller(self):
        if not self.gidCaller:
            self.decode()
        return self.gidCaller

    def set_gid_object(self, gid):
        self.gidObject = gid

    def get_gid_object(self):
        if not self.gidObject:
            self.decode()
        return self.gidObject

    def set_attributes(self, gid):
        self.attributes = gid

    def get_attributes(self):
        if not self.attributes:
            self.decode()
        return self.attributes

    def set_rspec(self, gid):
        self.rspec = gid

    def get_rspec(self):
        if not self.rspec:
            self.decode()
        return self.rspec

    def set_delegate(self, delegate):
        self.delegate = delegate

    def get_delegate(self):
        if not self.delegate:
            self.decode()
        return self.delegate

    def encode(self):
        dict = {"gidCaller": None,
                "gidObject": None,
                "attributes": self.attributes,
                "rspec": self.rspec,
                "delegate": self.delegate}
        if self.gidCaller:
            dict["gidCaller"] = self.gidCaller.save_to_string(save_parents=True)
        if self.gidObject:
            dict["gidObject"] = self.gidObject.save_to_string(save_parents=True)
        str = "URI:" + xmlrpclib.dumps((dict,), allow_none=True)
        self.set_data(str)

    def decode(self):
        data = self.get_data()
        if data:
            dict = xmlrpclib.loads(self.get_data()[4:])[0][0]
        else:
            dict = {}

        self.attributes = dict.get("attributes", {})
        self.rspec = dict.get("rspec", {})
        self.delegate = dict.get("delegate", False)

        gidCallerStr = dict.get("gidCaller", None)
        if gidCallerStr:
            self.gidCaller = GID(string=gidCallerStr)
        else:
            self.gidCaller = None

        gidObjectStr = dict.get("gidObject", None)
        if gidObjectStr:
            self.gidObject = GID(string=gidObjectStr)
        else:
            self.gidObject = None

    def dump(self, dump_parents=False):
        print "TICKET", self.get_subject()

        print "  gidCaller:"
        gidCaller = self.get_gid_caller()
        if gidCaller:
            gidCaller.dump(8, dump_parents)

        print "  gidObject:"
        gidObject = self.get_gid_object()
        if gidObject:
            gidObject.dump(8, dump_parents)

        print "  attributes:"
        for attrname in self.get_attributes().keys():
            print "        ", attrname, self.get_attributes()[attrname]

        print "       rspec:"
        print "        ", self.get_rspec()

        if self.parent and dump_parents:
           print "PARENT",
           self.parent.dump(dump_parents)