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/*
* This file is part of the go-nft project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2021 Red Hat, Inc.
*
*/
package nft
import (
"github.com/networkplumbing/go-nft/nft/schema"
)
type ChainType string
type ChainHook string
type ChainPolicy string
// Chain Types
const (
TypeFilter ChainType = schema.TypeFilter
TypeNAT ChainType = schema.TypeNAT
TypeRoute ChainType = schema.TypeRoute
)
// Chain Hooks
const (
HookPreRouting ChainHook = schema.HookPreRouting
HookInput ChainHook = schema.HookInput
HookOutput ChainHook = schema.HookOutput
HookForward ChainHook = schema.HookForward
HookPostRouting ChainHook = schema.HookPostRouting
HookIngress ChainHook = schema.HookIngress
)
// Chain Policies
const (
PolicyAccept ChainPolicy = schema.PolicyAccept
PolicyDrop ChainPolicy = schema.PolicyDrop
)
// NewRegularChain returns a new schema chain structure for a regular chain.
func NewRegularChain(table *schema.Table, name string) *schema.Chain {
return NewChain(table, name, nil, nil, nil, nil)
}
// NewChain returns a new schema chain structure for a base chain.
// For base chains, all arguments are required except the policy.
// Missing arguments will cause an error once the config is applied.
func NewChain(table *schema.Table, name string, ctype *ChainType, hook *ChainHook, prio *int, policy *ChainPolicy) *schema.Chain {
c := &schema.Chain{
Family: table.Family,
Table: table.Name,
Name: name,
}
if ctype != nil {
c.Type = string(*ctype)
}
if hook != nil {
c.Hook = string(*hook)
}
if prio != nil {
c.Prio = prio
}
if policy != nil {
c.Policy = string(*policy)
}
return c
}
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