Returns a bool which defines if the requested function is authorized.
        Used to evaluate the standard structure under external master
        authentication interfaces, like eauth, peer, peer_run, etc.

def auth_check(self,
                   auth_list,
                   funs,
                   args,
                   tgt,
                   tgt_type='glob',
                   groups=None,
                   publish_validate=False,
                   minions=None,
                   whitelist=None):
        '''
        Returns a bool which defines if the requested function is authorized.
        Used to evaluate the standard structure under external master
        authentication interfaces, like eauth, peer, peer_run, etc.
        '''
        if self.opts.get('auth.enable_expanded_auth_matching', False):
            return self.auth_check_expanded(auth_list, funs, args, tgt, tgt_type, groups, publish_validate)
        if publish_validate:
            v_tgt_type = tgt_type
            if tgt_type.lower() in ('pillar', 'pillar_pcre'):
                v_tgt_type = 'pillar_exact'
            elif tgt_type.lower() == 'compound':
                v_tgt_type = 'compound_pillar_exact'
            _res = self.check_minions(tgt, v_tgt_type)
            v_minions = set(_res['minions'])

            _res = self.check_minions(tgt, tgt_type)
            minions = set(_res['minions'])

            mismatch = bool(minions.difference(v_minions))
            # If the non-exact match gets more minions than the exact match
            # then pillar globbing or PCRE is being used, and we have a
            # problem
            if mismatch:
                return False
        # compound commands will come in a list so treat everything as a list
        if not isinstance(funs, list):
            funs = [funs]
            args = [args]
        try:
            for num, fun in enumerate(funs):
                if whitelist and fun in whitelist:
                    return True
                for ind in auth_list:
                    if isinstance(ind, six.string_types):
                        # Allowed for all minions
                        if self.match_check(ind, fun):
                            return True
                    elif isinstance(ind, dict):
                        if len(ind) != 1:
                            # Invalid argument
                            continue
                        valid = next(six.iterkeys(ind))
                        # Check if minions are allowed
                        if self.validate_tgt(
                            valid,
                            tgt,
                            tgt_type,
                            minions=minions):
                            # Minions are allowed, verify function in allowed list
                            fun_args = args[num]
                            fun_kwargs = fun_args[-1] if fun_args else None
                            if isinstance(fun_kwargs, dict) and '__kwarg__' in fun_kwargs:
                                fun_args = list(fun_args)  # copy on modify
                                del fun_args[-1]
                            else:
                                fun_kwargs = None
                            if self.__fun_check(ind[valid], fun, fun_args, fun_kwargs):
                                return True
        except TypeError:
            return False
        return False