mirror of
https://github.com/tailscale/tailscale.git
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1bb6abc604
Add in UPnP portmapping, using goupnp library in order to get the UPnP client and run the portmapping functions. This rips out anywhere where UPnP used to be in portmapping, and has a flow separate from PMP and PCP. RELNOTE=portmapper now supports UPnP mappings Fixes #682 Updates #2109 Signed-off-by: julianknodt <julianknodt@gmail.com>
83 lines
1.7 KiB
Go
83 lines
1.7 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package opt defines optional types.
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package opt
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import (
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"fmt"
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"strconv"
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)
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// Bool represents an optional boolean to be JSON-encoded.
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// The string can be empty (for unknown or unspecified), or
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// "true" or "false".
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type Bool string
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func (b *Bool) Set(v bool) {
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*b = Bool(strconv.FormatBool(v))
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}
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func (b *Bool) Clear() { *b = "" }
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func (b Bool) Get() (v bool, ok bool) {
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if b == "" {
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return
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}
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v, err := strconv.ParseBool(string(b))
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return v, err == nil
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}
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func (b Bool) And(v bool) Bool {
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if v {
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return b
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}
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return "false"
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}
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// EqualBool reports whether b is equal to v.
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// If b is empty or not a valid bool, it reports false.
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func (b Bool) EqualBool(v bool) bool {
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p, ok := b.Get()
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return ok && p == v
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}
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var (
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trueBytes = []byte("true")
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falseBytes = []byte("false")
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nullBytes = []byte("null")
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)
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func (b Bool) MarshalJSON() ([]byte, error) {
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switch b {
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case "true":
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return trueBytes, nil
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case "false":
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return falseBytes, nil
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case "":
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return nullBytes, nil
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}
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return nil, fmt.Errorf("invalid opt.Bool value %q", string(b))
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}
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func (b *Bool) UnmarshalJSON(j []byte) error {
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// Note: written with a bunch of ifs instead of a switch
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// because I'm sure the Go compiler optimizes away these
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// []byte->string allocations in an == comparison, but I'm too
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// lazy to check whether that's true in a switch also.
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if string(j) == "true" {
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*b = "true"
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return nil
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}
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if string(j) == "false" {
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*b = "false"
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return nil
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}
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if string(j) == "null" {
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*b = ""
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return nil
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}
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return fmt.Errorf("invalid opt.Bool value %q", j)
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}
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