61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
|
// Copyright 2013 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
package ipv6
|
||
|
|
|
||
|
|
import "golang.org/x/net/internal/iana"
|
||
|
|
|
||
|
|
// BUG(mikio): On Windows, methods related to ICMPFilter are not
|
||
|
|
// implemented.
|
||
|
|
|
||
|
|
// An ICMPType represents a type of ICMP message.
|
||
|
|
type ICMPType int
|
||
|
|
|
||
|
|
func (typ ICMPType) String() string {
|
||
|
|
s, ok := icmpTypes[typ]
|
||
|
|
if !ok {
|
||
|
|
return "<nil>"
|
||
|
|
}
|
||
|
|
return s
|
||
|
|
}
|
||
|
|
|
||
|
|
// Protocol returns the ICMPv6 protocol number.
|
||
|
|
func (typ ICMPType) Protocol() int {
|
||
|
|
return iana.ProtocolIPv6ICMP
|
||
|
|
}
|
||
|
|
|
||
|
|
// An ICMPFilter represents an ICMP message filter for incoming
|
||
|
|
// packets. The filter belongs to a packet delivery path on a host and
|
||
|
|
// it cannot interact with forwarding packets or tunnel-outer packets.
|
||
|
|
//
|
||
|
|
// Note: RFC 8200 defines a reasonable role model. A node means a
|
||
|
|
// device that implements IP. A router means a node that forwards IP
|
||
|
|
// packets not explicitly addressed to itself, and a host means a node
|
||
|
|
// that is not a router.
|
||
|
|
type ICMPFilter struct {
|
||
|
|
icmpv6Filter
|
||
|
|
}
|
||
|
|
|
||
|
|
// Accept accepts incoming ICMP packets including the type field value
|
||
|
|
// typ.
|
||
|
|
func (f *ICMPFilter) Accept(typ ICMPType) {
|
||
|
|
f.accept(typ)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Block blocks incoming ICMP packets including the type field value
|
||
|
|
// typ.
|
||
|
|
func (f *ICMPFilter) Block(typ ICMPType) {
|
||
|
|
f.block(typ)
|
||
|
|
}
|
||
|
|
|
||
|
|
// SetAll sets the filter action to the filter.
|
||
|
|
func (f *ICMPFilter) SetAll(block bool) {
|
||
|
|
f.setAll(block)
|
||
|
|
}
|
||
|
|
|
||
|
|
// WillBlock reports whether the ICMP type will be blocked.
|
||
|
|
func (f *ICMPFilter) WillBlock(typ ICMPType) bool {
|
||
|
|
return f.willBlock(typ)
|
||
|
|
}
|