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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2020 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
// +build cgo
package ui
import (
"fmt"
"strconv"
"strings"
"time"
"maunium.net/go/mauview"
"maunium.net/go/tcell"
"maunium.net/go/gomuks/debug"
"maunium.net/go/mautrix/crypto"
"maunium.net/go/mautrix/event"
)
type EmojiView struct {
mauview.SimpleEventHandler
Data crypto.SASData
}
func (e *EmojiView) Draw(screen mauview.Screen) {
if e.Data == nil {
return
}
switch e.Data.Type() {
case event.SASEmoji:
width := 10
for i, emoji := range e.Data.(crypto.EmojiSASData) {
x := i*width + i
y := 0
if i >= 4 {
x = (i-4)*width + i
y = 2
}
mauview.Print(screen, string(emoji.Emoji), x, y, width, mauview.AlignCenter, tcell.ColorDefault)
mauview.Print(screen, emoji.Description, x, y+1, width, mauview.AlignCenter, tcell.ColorDefault)
}
case event.SASDecimal:
maxWidth := 43
for i, number := range e.Data.(crypto.DecimalSASData) {
mauview.Print(screen, strconv.FormatUint(uint64(number), 10), 0, i, maxWidth, mauview.AlignCenter, tcell.ColorDefault)
}
}
}
type VerificationModal struct {
mauview.Component
device *crypto.DeviceIdentity
container *mauview.Box
waitingBar *mauview.ProgressBar
infoText *mauview.TextView
emojiText *EmojiView
inputBar *mauview.InputField
progress int
progressMax int
stopWaiting chan struct{}
confirmChan chan bool
done bool
parent *MainView
}
func NewVerificationModal(mainView *MainView, device *crypto.DeviceIdentity, timeout time.Duration) *VerificationModal {
vm := &VerificationModal{
parent: mainView,
device: device,
stopWaiting: make(chan struct{}),
confirmChan: make(chan bool),
done: false,
}
vm.progressMax = int(timeout.Seconds())
vm.progress = vm.progressMax
vm.waitingBar = mauview.NewProgressBar().
SetMax(vm.progressMax).
SetProgress(vm.progress).
SetIndeterminate(false)
vm.infoText = mauview.NewTextView()
vm.infoText.SetText(fmt.Sprintf("Waiting for %s\nto accept", device.UserID))
vm.emojiText = &EmojiView{}
vm.inputBar = mauview.NewInputField().
SetBackgroundColor(tcell.ColorDefault).
SetPlaceholderTextColor(tcell.ColorWhite)
flex := mauview.NewFlex().
SetDirection(mauview.FlexRow).
AddFixedComponent(vm.waitingBar, 1).
AddFixedComponent(vm.infoText, 4).
AddFixedComponent(vm.emojiText, 4).
AddFixedComponent(vm.inputBar, 1)
vm.container = mauview.NewBox(flex).
SetBorder(true).
SetTitle("Interactive verification")
vm.Component = mauview.Center(vm.container, 45, 12).SetAlwaysFocusChild(true)
go vm.decrementWaitingBar()
return vm
}
func (vm *VerificationModal) decrementWaitingBar() {
for {
select {
case <-time.Tick(time.Second):
if vm.progress <= 0 {
vm.waitingBar.SetIndeterminate(true)
vm.parent.parent.app.SetRedrawTicker(100 * time.Millisecond)
return
}
vm.progress--
vm.waitingBar.SetProgress(vm.progress)
vm.parent.parent.Render()
case <-vm.stopWaiting:
return
}
}
}
func (vm *VerificationModal) VerificationMethods() []crypto.VerificationMethod {
return []crypto.VerificationMethod{crypto.VerificationMethodEmoji{}, crypto.VerificationMethodDecimal{}}
}
func (vm *VerificationModal) VerifySASMatch(_ *crypto.DeviceIdentity, data crypto.SASData) bool {
var typeName string
if data.Type() == event.SASDecimal {
typeName = "numbers"
} else if data.Type() == event.SASEmoji {
typeName = "emojis"
} else {
return false
}
vm.infoText.SetText(fmt.Sprintf(
"Check if the other device is showing the\n"+
"same %s as below, then type \"yes\" to\n"+
"accept, or \"no\" to reject", typeName))
vm.inputBar.
SetTextColor(tcell.ColorWhite).
SetBackgroundColor(tcell.ColorDarkCyan).
SetPlaceholder("Type \"yes\" or \"no\"").
Focus()
vm.emojiText.Data = data
vm.parent.parent.Render()
vm.progress = vm.progressMax
confirm := <-vm.confirmChan
vm.progress = vm.progressMax
vm.emojiText.Data = nil
vm.infoText.SetText(fmt.Sprintf("Waiting for %s\nto confirm", vm.device.UserID))
vm.parent.parent.Render()
return confirm
}
func (vm *VerificationModal) OnCancel(cancelledByUs bool, reason string, _ event.VerificationCancelCode) {
vm.waitingBar.SetIndeterminate(false).SetMax(100).SetProgress(100)
vm.parent.parent.app.SetRedrawTicker(1 * time.Minute)
if cancelledByUs {
vm.infoText.SetText(fmt.Sprintf("Verification failed: %s", reason))
} else {
vm.infoText.SetText(fmt.Sprintf("Verification cancelled by %s: %s", vm.device.UserID, reason))
}
vm.inputBar.SetPlaceholder("Press enter to close the dialog")
vm.stopWaiting <- struct{}{}
vm.done = true
vm.parent.parent.Render()
}
func (vm *VerificationModal) OnSuccess() {
vm.waitingBar.SetIndeterminate(false).SetMax(100).SetProgress(100)
vm.parent.parent.app.SetRedrawTicker(1 * time.Minute)
vm.infoText.SetText(fmt.Sprintf("Successfully verified %s (%s) of %s", vm.device.Name, vm.device.DeviceID, vm.device.UserID))
vm.inputBar.SetPlaceholder("Press enter to close the dialog")
vm.stopWaiting <- struct{}{}
vm.done = true
vm.parent.parent.Render()
if vm.parent.config.SendToVerifiedOnly {
// Hacky way to make new group sessions after verified
vm.parent.matrix.Crypto().(*crypto.OlmMachine).OnDevicesChanged(vm.device.UserID)
}
}
func (vm *VerificationModal) OnKeyEvent(event mauview.KeyEvent) bool {
if vm.done {
if event.Key() == tcell.KeyEnter || event.Key() == tcell.KeyEsc {
vm.parent.HideModal()
return true
}
return false
} else if vm.emojiText.Data == nil {
debug.Print("Ignoring pre-emoji key event")
return false
}
if event.Key() == tcell.KeyEnter {
text := strings.ToLower(strings.TrimSpace(vm.inputBar.GetText()))
if text == "yes" {
debug.Print("Confirming verification")
vm.confirmChan <- true
} else if text == "no" {
debug.Print("Rejecting verification")
vm.confirmChan <- false
}
vm.inputBar.
SetPlaceholder("").
SetTextAndMoveCursor("").
SetBackgroundColor(tcell.ColorDefault).
SetTextColor(tcell.ColorDefault)
return true
} else {
return vm.inputBar.OnKeyEvent(event)
}
}
func (vm *VerificationModal) Focus() {
vm.container.Focus()
}
func (vm *VerificationModal) Blur() {
vm.container.Blur()
}
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