1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package ui
import (
"fmt"
"strings"
"github.com/lxn/walk"
"golang.zx2c4.com/wireguard/windows/conf"
"golang.zx2c4.com/wireguard/windows/service"
"golang.zx2c4.com/wireguard/windows/ui/syntax"
)
const ipv4DefaultRouteString = "0.0.0.0/0"
type TunnelConfigDialog struct {
*walk.Dialog
nameEdit *walk.LineEdit
pubkeyEdit *walk.LineEdit
syntaxEdit *syntax.SyntaxEdit
excludePrivateIPsCB *walk.CheckBox
saveButton *walk.PushButton
tunnel *service.Tunnel
config conf.Config
ipv4DefaultRouteModRFC1918CIDRs []string
ipv4DefaultRouteModRFC1918String string
lastPrivateKey string
inCheckedChanged bool
}
func runTunnelConfigDialog(owner walk.Form, tunnel *service.Tunnel) *conf.Config {
var (
title string
name string
)
dlg := &TunnelConfigDialog{tunnel: tunnel}
if tunnel == nil {
// Creating a new tunnel, create a new private key and use the default template
title = "Create new tunnel"
name = "New tunnel"
pk, _ := conf.NewPrivateKey()
dlg.config = conf.Config{Interface: conf.Interface{PrivateKey: *pk}}
} else {
title = "Edit tunnel"
name = tunnel.Name
dlg.config, _ = tunnel.StoredConfig()
}
layout := walk.NewGridLayout()
layout.SetSpacing(6)
layout.SetMargins(walk.Margins{18, 18, 18, 18})
layout.SetColumnStretchFactor(1, 3)
dlg.Dialog, _ = walk.NewDialog(owner)
dlg.SetIcon(owner.Icon())
dlg.SetTitle(title)
dlg.SetLayout(layout)
// TODO: use size hints in layout elements to communicate the minimal width
dlg.SetMinMaxSize(walk.Size{500, 400}, walk.Size{9999, 9999})
dlg.ipv4DefaultRouteModRFC1918CIDRs = []string{ // Set of all non-private IPv4 IPs
"0.0.0.0/5", "8.0.0.0/7", "11.0.0.0/8", "12.0.0.0/6", "16.0.0.0/4", "32.0.0.0/3",
"64.0.0.0/2", "128.0.0.0/3", "160.0.0.0/5", "168.0.0.0/6", "172.0.0.0/12",
"172.32.0.0/11", "172.64.0.0/10", "172.128.0.0/9", "173.0.0.0/8", "174.0.0.0/7",
"176.0.0.0/4", "192.0.0.0/9", "192.128.0.0/11", "192.160.0.0/13", "192.169.0.0/16",
"192.170.0.0/15", "192.172.0.0/14", "192.176.0.0/12", "192.192.0.0/10",
"193.0.0.0/8", "194.0.0.0/7", "196.0.0.0/6", "200.0.0.0/5", "208.0.0.0/4",
}
dlg.ipv4DefaultRouteModRFC1918String = strings.Join(dlg.ipv4DefaultRouteModRFC1918CIDRs, ", ")
nameLabel, _ := walk.NewTextLabel(dlg)
layout.SetRange(nameLabel, walk.Rectangle{0, 0, 1, 1})
nameLabel.SetTextAlignment(walk.AlignHFarVCenter)
nameLabel.SetText("Name:")
dlg.nameEdit, _ = walk.NewLineEdit(dlg)
layout.SetRange(dlg.nameEdit, walk.Rectangle{1, 0, 1, 1})
// TODO: compute the next available tunnel name ?
dlg.nameEdit.SetText(name)
pubkeyLabel, _ := walk.NewTextLabel(dlg)
layout.SetRange(pubkeyLabel, walk.Rectangle{0, 1, 1, 1})
pubkeyLabel.SetTextAlignment(walk.AlignHFarVCenter)
pubkeyLabel.SetText("Public key:")
dlg.pubkeyEdit, _ = walk.NewLineEdit(dlg)
layout.SetRange(dlg.pubkeyEdit, walk.Rectangle{1, 1, 1, 1})
dlg.pubkeyEdit.SetReadOnly(true)
dlg.pubkeyEdit.SetText("(unknown)")
dlg.syntaxEdit, _ = syntax.NewSyntaxEdit(dlg)
layout.SetRange(dlg.syntaxEdit, walk.Rectangle{0, 2, 2, 1})
dlg.syntaxEdit.SetText(dlg.config.ToWgQuick())
dlg.syntaxEdit.PrivateKeyChanged().Attach(dlg.onSyntaxEditPrivateKeyChanged)
dlg.syntaxEdit.TextChanged().Attach(dlg.updateExcludePrivateIPsCBVisible)
buttonsContainer, _ := walk.NewComposite(dlg)
layout.SetRange(buttonsContainer, walk.Rectangle{0, 3, 2, 1})
buttonsContainer.SetLayout(walk.NewHBoxLayout())
buttonsContainer.Layout().SetMargins(walk.Margins{})
dlg.excludePrivateIPsCB, _ = walk.NewCheckBox(buttonsContainer)
dlg.excludePrivateIPsCB.SetText("Exclude private IPs")
dlg.excludePrivateIPsCB.SetChecked(dlg.privateIPsExcluded())
dlg.excludePrivateIPsCB.CheckedChanged().Attach(dlg.onExcludePrivateIPsCBCheckedChanged)
dlg.updateExcludePrivateIPsCBVisible()
walk.NewHSpacer(buttonsContainer)
dlg.saveButton, _ = walk.NewPushButton(buttonsContainer)
dlg.saveButton.SetText("Save")
dlg.saveButton.Clicked().Attach(dlg.onSaveButtonClicked)
cancelButton, _ := walk.NewPushButton(buttonsContainer)
cancelButton.SetText("Cancel")
cancelButton.Clicked().Attach(dlg.Cancel)
dlg.SetCancelButton(cancelButton)
dlg.SetDefaultButton(dlg.saveButton)
if dlg.Run() == walk.DlgCmdOK {
// Save
return &dlg.config
}
return nil
}
func (dlg *TunnelConfigDialog) updateExcludePrivateIPsCBVisible() {
if dlg.inCheckedChanged {
return
}
visible := len(dlg.config.Peers) == 1
if visible {
cidrsSlice := dlg.allowedCIDRsSlice()
cidrsSet := dlg.setFromSlice(cidrsSlice)
if len(cidrsSet) != 1 || !cidrsSet[ipv4DefaultRouteString] {
for _, cidr := range dlg.ipv4DefaultRouteModRFC1918CIDRs {
if !cidrsSet[cidr] {
visible = false
break
}
}
}
}
dlg.excludePrivateIPsCB.SetVisible(visible)
}
func (dlg *TunnelConfigDialog) allowedCIDRsSlice() []string {
var cidrs []string
lines := strings.Split(dlg.syntaxEdit.Text(), "\n")
for _, line := range lines {
if strings.Contains(line, "AllowedIPs") {
cidrsMaybeWithSpace := strings.Split(strings.TrimSpace(line[strings.IndexByte(line, '=')+1:]), ",")
cidrs = make([]string, len(cidrsMaybeWithSpace))
for i, cidr := range cidrsMaybeWithSpace {
cidrs[i] = strings.TrimSpace(cidr)
}
break
}
}
return cidrs
}
func (dlg *TunnelConfigDialog) setFromSlice(slice []string) map[string]bool {
set := make(map[string]bool)
for _, s := range slice {
set[s] = true
}
return set
}
func (dlg *TunnelConfigDialog) privateIPsExcluded() bool {
allowedCIDRs := dlg.setFromSlice(dlg.allowedCIDRsSlice())
if len(allowedCIDRs) != len(dlg.ipv4DefaultRouteModRFC1918CIDRs) {
return false
}
for _, cidr := range dlg.ipv4DefaultRouteModRFC1918CIDRs {
if !allowedCIDRs[cidr] {
return false
}
}
return true
}
func (dlg *TunnelConfigDialog) onSyntaxEditPrivateKeyChanged(privateKey string) {
if privateKey == dlg.lastPrivateKey {
return
}
dlg.lastPrivateKey = privateKey
key, _ := conf.NewPrivateKeyFromString(privateKey)
if key != nil {
dlg.pubkeyEdit.SetText(key.Public().String())
} else {
dlg.pubkeyEdit.SetText("(unknown)")
}
}
func (dlg *TunnelConfigDialog) onExcludePrivateIPsCBCheckedChanged() {
dlg.inCheckedChanged = true
defer func() {
dlg.inCheckedChanged = false
}()
var before, after string
if dlg.excludePrivateIPsCB.Checked() {
before, after = ipv4DefaultRouteString, dlg.ipv4DefaultRouteModRFC1918String
} else {
before, after = dlg.ipv4DefaultRouteModRFC1918String, ipv4DefaultRouteString
}
// TODO: Preserve changes the user may have done to the list?
dlg.syntaxEdit.SetText(strings.ReplaceAll(dlg.syntaxEdit.Text(), "AllowedIPs = "+before, "AllowedIPs = "+after))
}
func (dlg *TunnelConfigDialog) onSaveButtonClicked() {
newName := dlg.nameEdit.Text()
if newName == "" {
walk.MsgBox(dlg, "Invalid configuration", "Name is required", walk.MsgBoxIconWarning)
return
}
if dlg.tunnel != nil && dlg.tunnel.Name != newName {
names, err := conf.ListConfigNames()
if err != nil {
walk.MsgBox(dlg, "Error", err.Error(), walk.MsgBoxIconError)
return
}
for _, name := range names {
if name == newName {
walk.MsgBox(dlg, "Invalid configuration", fmt.Sprintf("Another tunnel already exists with the name ‘%s’.", newName), walk.MsgBoxIconWarning)
return
}
}
}
if !conf.TunnelNameIsValid(newName) {
walk.MsgBox(dlg, "Invalid configuration", fmt.Sprintf("Tunnel name ‘%s’ is invalid.", newName), walk.MsgBoxIconWarning)
return
}
cfg, err := conf.FromWgQuick(dlg.syntaxEdit.Text(), newName)
if err != nil {
walk.MsgBox(dlg, "Error", err.Error(), walk.MsgBoxIconError)
return
}
dlg.config = *cfg
dlg.Accept()
}
|
