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whatsapp_otp.go
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whatsapp_otp.go
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package webapp
import (
"net/http"
"github.com/authgear/authgear-server/pkg/api/model"
"github.com/authgear/authgear-server/pkg/auth/handler/webapp/viewmodels"
"github.com/authgear/authgear-server/pkg/auth/webapp"
"github.com/authgear/authgear-server/pkg/lib/authn/otp"
"github.com/authgear/authgear-server/pkg/lib/config"
"github.com/authgear/authgear-server/pkg/lib/interaction"
"github.com/authgear/authgear-server/pkg/util/clock"
"github.com/authgear/authgear-server/pkg/util/httproute"
"github.com/authgear/authgear-server/pkg/util/phone"
"github.com/authgear/authgear-server/pkg/util/template"
)
var TemplateWebWhatsappHTML = template.RegisterHTML(
"web/whatsapp_otp.html",
Components...,
)
func ConfigureWhatsappOTPRoute(route httproute.Route) httproute.Route {
return route.
WithMethods("OPTIONS", "POST", "GET").
WithPathPattern("/flows/whatsapp_otp")
}
type WhatsappOTPNode interface {
GetWhatsappOTPLength() int
GetPhone() string
GetOTPKindFactory() otp.KindFactory
}
type WhatsappOTPAuthnNode interface {
GetAuthenticatorIndex() int
}
type WhatsappOTPViewModel struct {
WhatsappOTPTarget string
WhatsappOTPCodeLength int
WhatsappOTPCodeSendCooldown int
FailedAttemptRateLimitExceeded bool
}
type WhatsappOTPHandler struct {
Config *config.AppConfig
Clock clock.Clock
ControllerFactory ControllerFactory
BaseViewModel *viewmodels.BaseViewModeler
AlternativeStepsViewModel *viewmodels.AlternativeStepsViewModeler
Renderer Renderer
OTPCodeService OTPCodeService
FlashMessage FlashMessage
}
func (h *WhatsappOTPHandler) GetData(r *http.Request, rw http.ResponseWriter, session *webapp.Session, graph *interaction.Graph) (map[string]interface{}, error) {
data := map[string]interface{}{}
baseViewModel := h.BaseViewModel.ViewModel(r, rw)
whatsappViewModel := WhatsappOTPViewModel{}
var n WhatsappOTPNode
if graph.FindLastNode(&n) {
target := n.GetPhone()
channel := model.AuthenticatorOOBChannelWhatsapp
otpkind := n.GetOTPKindFactory()(h.Config, channel)
whatsappViewModel.WhatsappOTPTarget = phone.Mask(target)
whatsappViewModel.WhatsappOTPCodeLength = n.GetWhatsappOTPLength()
state, err := h.OTPCodeService.InspectState(otpkind, target)
if err != nil {
return nil, err
}
whatsappViewModel.FailedAttemptRateLimitExceeded = state.TooManyAttempts
cooldown := int(state.CanResendAt.Sub(h.Clock.NowUTC()).Seconds())
if cooldown < 0 {
whatsappViewModel.WhatsappOTPCodeSendCooldown = 0
} else {
whatsappViewModel.WhatsappOTPCodeSendCooldown = cooldown
}
}
currentStepKind := session.CurrentStep().Kind
phoneOTPAlternatives := viewmodels.PhoneOTPAlternativeStepsViewModel{}
if err := phoneOTPAlternatives.AddAlternatives(graph, currentStepKind); err != nil {
return nil, err
}
// alternatives
var alternatives *viewmodels.AlternativeStepsViewModel
var node1 CreateAuthenticatorBeginNode
var node2 AuthenticationBeginNode
nodesInf := []interface{}{
&node1,
&node2,
}
node := graph.FindLastNodeFromList(nodesInf)
switch node.(type) {
case *CreateAuthenticatorBeginNode:
var err error
alternatives, err = h.AlternativeStepsViewModel.CreateAuthenticatorAlternatives(graph, currentStepKind)
if err != nil {
return nil, err
}
case *AuthenticationBeginNode:
var err error
alternatives, err = h.AlternativeStepsViewModel.AuthenticationAlternatives(graph, currentStepKind)
if err != nil {
return nil, err
}
default:
// identity verification
// alternatives are provided in PhoneOTPAlternativeStepsViewModel
alternatives = &viewmodels.AlternativeStepsViewModel{}
}
viewmodels.Embed(data, baseViewModel)
viewmodels.Embed(data, whatsappViewModel)
viewmodels.Embed(data, phoneOTPAlternatives)
viewmodels.Embed(data, *alternatives)
return data, nil
}
func (h *WhatsappOTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ctrl, err := h.ControllerFactory.New(r, w)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
defer ctrl.Serve()
ctrl.Get(func() error {
session, err := ctrl.InteractionSession()
if err != nil {
return err
}
graph, err := ctrl.InteractionGet()
if err != nil {
return err
}
data, err := h.GetData(r, w, session, graph)
if err != nil {
return err
}
h.Renderer.RenderHTML(w, r, TemplateWebWhatsappHTML, data)
return nil
})
ctrl.PostAction("submit", func() error {
deviceToken := r.Form.Get("x_device_token") == "true"
otp := r.Form.Get("x_whatsapp_code")
result, err := ctrl.InteractionPost(func() (input interface{}, err error) {
input = &InputVerifyWhatsappOTP{
DeviceToken: deviceToken,
WhatsappOTP: otp,
}
return
})
if err != nil {
return err
}
result.WriteResponse(w, r)
return nil
})
ctrl.PostAction("resend", func() error {
result, err := ctrl.InteractionPost(func() (input interface{}, err error) {
input = &InputResendCode{}
return
})
if err != nil {
return err
}
if !result.IsInteractionErr {
h.FlashMessage.Flash(w, string(webapp.FlashMessageTypeResendCodeSuccess))
}
result.WriteResponse(w, r)
return nil
})
handleAlternativeSteps(ctrl)
}