feat(login): add login with qr code (#608)
Co-authored-by: Ayyan <ayn2op@gmail.com>
This commit is contained in:
Z1xus
GitHub
parent
ab1ec9e108
commit
b738593590
5 changed files with 508 additions and 4 deletions
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@ -51,7 +51,7 @@ func newApplication(cfg *config.Config) *application {
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func (a *application) run(token string) error {
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if token == "" {
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loginForm := login.NewForm(a.cfg, func(token string) {
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loginForm := login.NewForm(a.Application, a.cfg, func(token string) {
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if err := a.run(token); err != nil {
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slog.Error("failed to run application", "err", err)
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}
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3
go.mod
3
go.mod
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@ -12,10 +12,12 @@ require (
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github.com/gdamore/tcell/v2 v2.9.0
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github.com/gen2brain/beeep v0.11.1
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github.com/google/uuid v1.6.0
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github.com/gorilla/websocket v1.5.3
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github.com/klauspost/compress v1.18.0
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github.com/lmittmann/tint v1.1.2
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github.com/ncruces/zenity v0.10.14
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github.com/sahilm/fuzzy v0.1.1
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github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
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github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966
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github.com/yuin/goldmark v1.7.13
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github.com/zalando/go-keyring v0.2.6
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@ -34,7 +36,6 @@ require (
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github.com/go-ole/go-ole v1.3.0 // indirect
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github.com/godbus/dbus/v5 v5.1.0 // indirect
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github.com/gorilla/schema v1.4.1 // indirect
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github.com/gorilla/websocket v1.5.3 // indirect
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github.com/jackmordaunt/icns/v3 v3.0.1 // indirect
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github.com/josephspurrier/goversioninfo v1.5.0 // indirect
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github.com/lucasb-eyer/go-colorful v1.3.0 // indirect
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2
go.sum
2
go.sum
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@ -142,6 +142,8 @@ github.com/sergeymakinen/go-bmp v1.0.0 h1:SdGTzp9WvCV0A1V0mBeaS7kQAwNLdVJbmHlqNW
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github.com/sergeymakinen/go-bmp v1.0.0/go.mod h1:/mxlAQZRLxSvJFNIEGGLBE/m40f3ZnUifpgVDlcUIEY=
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github.com/sergeymakinen/go-ico v1.0.0-beta.0 h1:m5qKH7uPKLdrygMWxbamVn+tl2HfiA3K6MFJw4GfZvQ=
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github.com/sergeymakinen/go-ico v1.0.0-beta.0/go.mod h1:wQ47mTczswBO5F0NoDt7O0IXgnV4Xy3ojrroMQzyhUk=
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github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e h1:MRM5ITcdelLK2j1vwZ3Je0FKVCfqOLp5zO6trqMLYs0=
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github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e/go.mod h1:XV66xRDqSt+GTGFMVlhk3ULuV0y9ZmzeVGR4mloJI3M=
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github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 h1:JIAuq3EEf9cgbU6AtGPK4CTG3Zf6CKMNqf0MHTggAUA=
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github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966/go.mod h1:sUM3LWHvSMaG192sy56D9F7CNvL7jUJVXoqM1QKLnog=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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@ -17,20 +17,23 @@ import (
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const (
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formPageName = "form"
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errorPageName = "error"
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qrPageName = "qr"
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)
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type DoneFn = func(token string)
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type Form struct {
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*tview.Pages
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app *tview.Application
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cfg *config.Config
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form *tview.Form
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done DoneFn
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}
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func NewForm(cfg *config.Config, done DoneFn) *Form {
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func NewForm(app *tview.Application, cfg *config.Config, done DoneFn) *Form {
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f := &Form{
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Pages: tview.NewPages(),
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app: app,
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cfg: cfg,
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form: tview.NewForm(),
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done: done,
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@ -40,7 +43,8 @@ func NewForm(cfg *config.Config, done DoneFn) *Form {
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AddInputField("Email", "", 0, nil, nil).
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AddPasswordField("Password", "", 0, 0, nil).
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AddPasswordField("Code (optional)", "", 0, 0, nil).
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AddButton("Login", f.login)
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AddButton("Login", f.login).
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AddButton("Login with QR", f.loginWithQR)
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f.AddAndSwitchToPage(formPageName, f.form, true)
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return f
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}
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@ -114,3 +118,26 @@ func (f *Form) onError(err error) {
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AddAndSwitchToPage(errorPageName, ui.Centered(modal, 0, 0), true).
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ShowPage(formPageName)
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}
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func (f *Form) loginWithQR() {
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qr := newQRLogin(f.app, f.cfg, func(token string, err error) {
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if err != nil {
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f.onError(err)
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return
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}
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if token == "" {
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f.RemovePage(qrPageName).SwitchToPage(formPageName)
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return
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}
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go keyring.Set(consts.Name, "token", token)
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f.RemovePage(qrPageName)
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if f.done != nil {
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f.done(token)
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}
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})
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f.AddAndSwitchToPage(qrPageName, qr, true)
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qr.start()
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}
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474
internal/login/qr.go
Normal file
474
internal/login/qr.go
Normal file
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@ -0,0 +1,474 @@
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package login
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import (
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"bytes"
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"context"
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"crypto/rand"
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"crypto/rsa"
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"crypto/sha256"
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"crypto/x509"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"log/slog"
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stdhttp "net/http"
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"strings"
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"time"
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"github.com/ayn2op/discordo/internal/config"
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apphttp "github.com/ayn2op/discordo/internal/http"
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"github.com/ayn2op/discordo/internal/ui"
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"github.com/ayn2op/tview"
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"github.com/diamondburned/arikawa/v3/api"
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"github.com/gdamore/tcell/v2"
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"github.com/gorilla/websocket"
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"github.com/skip2/go-qrcode"
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)
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const gatewayURL = "wss://remote-auth-gateway.discord.gg/?v=2"
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var remoteAuthLogin = api.EndpointMe + "/remote-auth/login"
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type qrLogin struct {
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*tview.TextView
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app *tview.Application
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cfg *config.Config
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view *tview.TextView
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done func(token string, err error)
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conn *websocket.Conn
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privKey *rsa.PrivateKey
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cancel context.CancelFunc
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fingerprint string
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}
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func newQRLogin(app *tview.Application, cfg *config.Config, done func(token string, err error)) *qrLogin {
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view := tview.NewTextView().
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SetDynamicColors(true).
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SetScrollable(true).
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SetWrap(false).
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SetTextAlign(tview.AlignmentCenter)
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view.Box = ui.ConfigureBox(view.Box, &cfg.Theme)
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view.SetTitle("Login with QR")
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q := &qrLogin{
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app: app,
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cfg: cfg,
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view: view,
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done: done,
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}
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q.TextView = view
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view.SetChangedFunc(func() {
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q.app.QueueUpdateDraw(func() {})
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})
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view.SetInputCapture(func(ev *tcell.EventKey) *tcell.EventKey {
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if ev.Key() == tcell.KeyEsc {
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q.stop()
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if q.done != nil {
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q.done("", nil)
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}
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return nil
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}
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return ev
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})
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return q
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}
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func (q *qrLogin) centerText(s string) string {
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_, _, _, height := q.view.GetInnerRect()
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if height == 0 {
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height = 40
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}
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lines := strings.Count(s, "\n") + 1
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padding := (height - lines) / 2
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if padding < 0 {
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padding = 0
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} else if padding < 1 && height > lines {
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padding = 1
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}
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return strings.Repeat("\n", padding) + s
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}
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func (q *qrLogin) start() {
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ctx, cancel := context.WithCancel(context.Background())
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q.cancel = cancel
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go q.run(ctx)
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}
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func (q *qrLogin) stop() {
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if q.cancel != nil {
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q.cancel()
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}
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if q.conn != nil {
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q.conn.Close()
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}
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}
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func (q *qrLogin) writeJSON(data any) error {
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return q.conn.WriteJSON(data)
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}
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type raHello struct {
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TimeoutMs int `json:"timeout_ms"`
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HeartbeatInterval int `json:"heartbeat_interval"`
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}
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type raNonceProof struct {
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EncryptedNonce string `json:"encrypted_nonce"`
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}
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type raPendingInit struct {
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Fingerprint string `json:"fingerprint"`
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}
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type raPendingLogin struct {
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Ticket string `json:"ticket"`
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}
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type raPendingTicket struct {
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EncryptedUserPayload string `json:"encrypted_user_payload"`
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}
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func (q *qrLogin) run(ctx context.Context) {
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defer q.stop()
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setText := func(s string) {
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q.app.QueueUpdateDraw(func() {
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q.view.SetText(q.centerText(s))
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})
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}
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setText("Preparing QR code...\n\n[::d]Press Esc to cancel[-]")
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privKey, err := rsa.GenerateKey(rand.Reader, 2048)
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if err != nil {
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q.fail(err)
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return
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}
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q.privKey = privKey
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pubDER, err := x509.MarshalPKIXPublicKey(&privKey.PublicKey)
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if err != nil {
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q.fail(err)
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return
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}
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encodedPublicKey := base64.StdEncoding.EncodeToString(pubDER)
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headers := stdhttp.Header{}
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headers.Set("User-Agent", apphttp.BrowserUserAgent)
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headers.Set("Origin", "https://discord.com")
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setText("Connecting to Remote Auth Gateway...\n\n[::d]Press Esc to cancel[-]")
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dialer := websocket.Dialer{
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Proxy: stdhttp.ProxyFromEnvironment,
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HandshakeTimeout: 15 * time.Second,
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EnableCompression: true,
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}
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conn, resp, err := dialer.DialContext(ctx, gatewayURL, headers)
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if err != nil {
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var body []byte
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if resp != nil && resp.Body != nil {
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body, _ = io.ReadAll(resp.Body)
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}
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status := ""
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if resp != nil {
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status = resp.Status
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}
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q.fail(fmt.Errorf("websocket dial failed: %w, status=%s, body=%s", err, status, string(body)))
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return
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}
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q.conn = conn
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readCh := make(chan []byte, 1)
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readErr := make(chan error, 1)
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go func() {
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for {
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_, data, err := conn.ReadMessage()
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if err != nil {
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readErr <- err
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return
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}
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readCh <- data
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}
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}()
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var heartbeatTicker *time.Ticker
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defer func() {
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if heartbeatTicker != nil {
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heartbeatTicker.Stop()
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}
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}()
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for {
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select {
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case <-ctx.Done():
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return
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case err := <-readErr:
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if mapped := mapWSCloseError(err); mapped == nil {
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return
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} else {
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q.fail(mapped)
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}
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return
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case data := <-readCh:
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var opOnly struct {
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Op string `json:"op"`
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}
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if err := json.Unmarshal(data, &opOnly); err != nil {
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setText("[red]Bad JSON:[-] " + err.Error())
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q.fail(err)
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return
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}
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switch opOnly.Op {
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case "hello":
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var h raHello
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if err := json.Unmarshal(data, &h); err != nil {
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setText("[red]Hello decode failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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if h.HeartbeatInterval > 0 {
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heartbeatTicker = time.NewTicker(time.Duration(h.HeartbeatInterval) * time.Millisecond)
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go func() {
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for {
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select {
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case <-ctx.Done():
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return
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case <-heartbeatTicker.C:
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_ = q.writeJSON(map[string]any{"op": "heartbeat"})
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}
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}
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}()
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}
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setText("Connected. Handshaking...\n\n[::d]Press Esc to cancel[-]")
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if err := q.writeJSON(map[string]any{
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"op": "init",
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"encoded_public_key": encodedPublicKey,
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}); err != nil {
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setText("[red]Init send failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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case "nonce_proof":
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var n raNonceProof
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if err := json.Unmarshal(data, &n); err != nil {
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setText("[red]Nonce decode failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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enc, err := base64.StdEncoding.DecodeString(n.EncryptedNonce)
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if err != nil {
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setText("[red]Nonce b64 decode failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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pt, err := rsa.DecryptOAEP(sha256.New(), rand.Reader, q.privKey, enc, nil)
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if err != nil {
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setText("[red]Nonce decrypt failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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nonce := base64.RawURLEncoding.EncodeToString(pt)
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if err := q.writeJSON(map[string]any{"op": "nonce_proof", "nonce": nonce}); err != nil {
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setText("[red]Nonce send failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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case "pending_remote_init":
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var p raPendingInit
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if err := json.Unmarshal(data, &p); err != nil {
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setText("[red]Init decode failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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q.fingerprint = p.Fingerprint
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content := "https://discord.com/ra/" + p.Fingerprint
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ascii, err := renderQR(content)
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if err != nil {
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setText("[red]QR render failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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setText(ascii + "\n\n[::b]Scan with Discord mobile app[::-]\n\n[::d]Press Esc to cancel[-]")
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case "heartbeat_ack":
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case "pending_ticket":
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var t raPendingTicket
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if err := json.Unmarshal(data, &t); err != nil {
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setText("[red]Ticket decode failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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payload, err := base64.StdEncoding.DecodeString(t.EncryptedUserPayload)
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if err != nil {
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setText("[red]Ticket payload b64 failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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pt, err := rsa.DecryptOAEP(sha256.New(), rand.Reader, q.privKey, payload, nil)
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if err != nil {
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setText("[red]Ticket payload decrypt failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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parts := strings.SplitN(string(pt), ":", 4)
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var discriminator, username string
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if len(parts) == 4 {
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discriminator = parts[1]
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username = parts[3]
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}
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if discriminator == "" && username == "" {
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setText("Scan received.\n\nWaiting for approval on mobile...\n\n[::d]Press Esc to cancel[-]")
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} else {
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setText("Logging in as [::b]" + username + "[#]" + discriminator + "[::-]\n\nConfirm on mobile...\n\n[::d]Press Esc to cancel[-]")
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}
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case "pending_login":
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var p raPendingLogin
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if err := json.Unmarshal(data, &p); err != nil {
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setText("[red]Login decode failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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setText("Authenticating...\n\n[::d]Please wait[-]")
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token, err := exchangeTicket(ctx, p.Ticket, q.fingerprint, q.privKey)
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if err != nil {
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setText("[red]Ticket exchange failed:[-] " + err.Error())
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q.fail(err)
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return
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}
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q.success(token)
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return
|
||||
case "cancel":
|
||||
setText("Login canceled on mobile")
|
||||
if q.done != nil {
|
||||
q.done("", nil)
|
||||
}
|
||||
return
|
||||
default:
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func renderQR(content string) (string, error) {
|
||||
code, err := qrcode.New(content, qrcode.Low)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
bm := code.Bitmap()
|
||||
var b strings.Builder
|
||||
for y := 0; y < len(bm); y += 2 {
|
||||
for x := range bm[y] {
|
||||
top := bm[y][x]
|
||||
bottom := false
|
||||
if y+1 < len(bm) {
|
||||
bottom = bm[y+1][x]
|
||||
}
|
||||
if top && bottom {
|
||||
b.WriteString("█")
|
||||
} else if top && !bottom {
|
||||
b.WriteString("▀")
|
||||
} else if !top && bottom {
|
||||
b.WriteString("▄")
|
||||
} else {
|
||||
b.WriteString(" ")
|
||||
}
|
||||
}
|
||||
b.WriteByte('\n')
|
||||
}
|
||||
return b.String(), nil
|
||||
}
|
||||
|
||||
func exchangeTicket(ctx context.Context, ticket string, fingerprint string, priv *rsa.PrivateKey) (string, error) {
|
||||
if ticket == "" {
|
||||
return "", errors.New("empty ticket")
|
||||
}
|
||||
body := map[string]string{"ticket": ticket}
|
||||
raw, err := json.Marshal(body)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
req, err := stdhttp.NewRequestWithContext(ctx, stdhttp.MethodPost, remoteAuthLogin, bytes.NewReader(raw))
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
req.Header = apphttp.Headers()
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
req.Header.Set("User-Agent", apphttp.BrowserUserAgent)
|
||||
if fingerprint != "" {
|
||||
req.Header.Set("X-Fingerprint", fingerprint)
|
||||
req.Header.Set("Referer", "https://discord.com/ra/"+fingerprint)
|
||||
}
|
||||
|
||||
client := &stdhttp.Client{Transport: apphttp.NewTransport(), Timeout: 20 * time.Second}
|
||||
resp, err := client.Do(req)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
|
||||
b, _ := io.ReadAll(resp.Body)
|
||||
return "", fmt.Errorf("remote-auth login failed: %s: %s", resp.Status, string(b))
|
||||
}
|
||||
|
||||
decoder := json.NewDecoder(resp.Body)
|
||||
|
||||
var out struct {
|
||||
EncryptedToken string `json:"encrypted_token"`
|
||||
}
|
||||
if err := decoder.Decode(&out); err != nil {
|
||||
return "", err
|
||||
}
|
||||
if out.EncryptedToken == "" {
|
||||
return "", fmt.Errorf("no encrypted_token in response")
|
||||
}
|
||||
enc, err := base64.StdEncoding.DecodeString(out.EncryptedToken)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
pt, err := rsa.DecryptOAEP(sha256.New(), rand.Reader, priv, enc, nil)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
return string(pt), nil
|
||||
}
|
||||
|
||||
func (q *qrLogin) success(token string) {
|
||||
if q.done != nil {
|
||||
q.done(token, nil)
|
||||
}
|
||||
}
|
||||
|
||||
func (q *qrLogin) fail(err error) {
|
||||
slog.Error("qr login failed", "err", err)
|
||||
if q.done != nil {
|
||||
q.done("", err)
|
||||
}
|
||||
}
|
||||
|
||||
func mapWSCloseError(err error) error {
|
||||
var cerr *websocket.CloseError
|
||||
if errors.As(err, &cerr) {
|
||||
switch cerr.Code {
|
||||
case 1000:
|
||||
return errors.New("session closed")
|
||||
case 4000:
|
||||
return errors.New("remote auth: invalid version")
|
||||
case 4001:
|
||||
return errors.New("remote auth: decode error")
|
||||
case 4002:
|
||||
return errors.New("remote auth: handshake failure")
|
||||
case 4003:
|
||||
return errors.New("remote auth: session timed out")
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue