/
authflow_branch.go
246 lines (216 loc) · 7.6 KB
/
authflow_branch.go
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package viewmodels
import (
"slices"
"github.com/authgear/authgear-server/pkg/api/model"
"github.com/authgear/authgear-server/pkg/auth/webapp"
authflow "github.com/authgear/authgear-server/pkg/lib/authenticationflow"
"github.com/authgear/authgear-server/pkg/lib/authenticationflow/declarative"
"github.com/authgear/authgear-server/pkg/lib/authn/otp"
"github.com/authgear/authgear-server/pkg/lib/config"
)
type AuthflowBranch struct {
Authentication config.AuthenticationFlowAuthentication
Index int
Channel model.AuthenticatorOOBChannel
MaskedClaimValue string
OTPForm otp.Form
VerificationSkippable bool
}
func isAuthflowBranchSame(a AuthflowBranch, b AuthflowBranch) bool {
return a.Index == b.Index && a.Channel == b.Channel
}
type AuthflowBranchViewModel struct {
// FlowType is mainly for pages to tell if the flow is reauthentication or not.
FlowType authflow.FlowType
ActionType authflow.FlowActionType
DeviceTokenEnabled bool
Branches []AuthflowBranch
}
type AuthflowBranchFilter func([]AuthflowBranch) []AuthflowBranch
func NewAuthflowBranchViewModel(
screen *webapp.AuthflowScreenWithFlowResponse,
filters ...AuthflowBranchFilter) AuthflowBranchViewModel {
branchFlowResponse := screen.BranchStateTokenFlowResponse
deviceTokenEnabled := false
var branches []AuthflowBranch
if branchFlowResponse != nil {
switch branchData := branchFlowResponse.Action.Data.(type) {
case declarative.StepAuthenticateData:
deviceTokenEnabled = branchData.DeviceTokenEnabled
branches = newAuthflowBranchViewModelStepAuthenticate(screen, branchData)
case declarative.IntentSignupFlowStepCreateAuthenticatorData:
branches = newAuthflowBranchViewModelStepCreateAuthenticator(screen, branchData)
case declarative.SelectOOBOTPChannelsData:
branches = newAuthflowBranchViewModelVerify(screen, branchData)
}
}
for _, filter := range filters {
branches = filter(branches)
}
branches = reorderBranches(branches)
return AuthflowBranchViewModel{
FlowType: screen.StateTokenFlowResponse.Type,
ActionType: screen.StateTokenFlowResponse.Action.Type,
DeviceTokenEnabled: deviceTokenEnabled,
Branches: branches,
}
}
func reorderBranches(branches []AuthflowBranch) []AuthflowBranch {
// Put passkey branches at the end
result := []AuthflowBranch{}
for idx := range branches {
b := branches[len(branches)-idx-1]
if b.Authentication == config.AuthenticationFlowAuthenticationPrimaryPasskey {
// Put to the beginning of the reversed slice
result = append([]AuthflowBranch{b}, result...)
} else {
result = append(result, b)
}
}
slices.Reverse(result)
return result
}
func newAuthflowBranchViewModelStepAuthenticate(screen *webapp.AuthflowScreenWithFlowResponse, branchData declarative.StepAuthenticateData) []AuthflowBranch {
takenBranchIndex := *screen.Screen.TakenBranchIndex
takenBranch := AuthflowBranch{
Authentication: branchData.Options[takenBranchIndex].Authentication,
Index: takenBranchIndex,
Channel: screen.Screen.TakenChannel,
}
branches := []AuthflowBranch{}
addIndexBranch := func(idx int, o declarative.AuthenticateOptionForOutput) {
branch := AuthflowBranch{
Authentication: o.Authentication,
Index: idx,
}
if !isAuthflowBranchSame(branch, takenBranch) {
branches = append(branches, branch)
}
}
addChannelBranch := func(idx int, o declarative.AuthenticateOptionForOutput) {
for _, channel := range o.Channels {
branch := AuthflowBranch{
Authentication: o.Authentication,
Index: idx,
Channel: channel,
MaskedClaimValue: o.MaskedDisplayName,
OTPForm: o.OTPForm,
}
if !isAuthflowBranchSame(branch, takenBranch) {
branches = append(branches, branch)
}
}
}
for idx, o := range branchData.Options {
switch o.Authentication {
case config.AuthenticationFlowAuthenticationPrimaryPassword:
addIndexBranch(idx, o)
case config.AuthenticationFlowAuthenticationPrimaryPasskey:
addIndexBranch(idx, o)
case config.AuthenticationFlowAuthenticationPrimaryOOBOTPEmail:
addChannelBranch(idx, o)
case config.AuthenticationFlowAuthenticationPrimaryOOBOTPSMS:
addChannelBranch(idx, o)
case config.AuthenticationFlowAuthenticationSecondaryPassword:
addIndexBranch(idx, o)
case config.AuthenticationFlowAuthenticationSecondaryOOBOTPEmail:
addChannelBranch(idx, o)
case config.AuthenticationFlowAuthenticationSecondaryOOBOTPSMS:
addChannelBranch(idx, o)
case config.AuthenticationFlowAuthenticationSecondaryTOTP:
addIndexBranch(idx, o)
case config.AuthenticationFlowAuthenticationRecoveryCode:
addIndexBranch(idx, o)
default:
// Ignore other authentications.
break
}
}
return branches
}
func newAuthflowBranchViewModelStepCreateAuthenticator(screen *webapp.AuthflowScreenWithFlowResponse, branchData declarative.IntentSignupFlowStepCreateAuthenticatorData) []AuthflowBranch {
takenBranchIndex := *screen.Screen.TakenBranchIndex
takenBranch := AuthflowBranch{
Authentication: branchData.Options[takenBranchIndex].Authentication,
Index: takenBranchIndex,
Channel: screen.Screen.TakenChannel,
}
branches := []AuthflowBranch{}
addIndexBranch := func(idx int, o declarative.CreateAuthenticatorOption) {
branch := AuthflowBranch{
Authentication: o.Authentication,
Index: idx,
}
if !isAuthflowBranchSame(branch, takenBranch) {
branches = append(branches, branch)
}
}
addChannelBranch := func(idx int, o declarative.CreateAuthenticatorOption) {
for _, channel := range o.Channels {
branch := AuthflowBranch{
Authentication: o.Authentication,
Index: idx,
Channel: channel,
MaskedClaimValue: "",
OTPForm: o.OTPForm,
}
if !isAuthflowBranchSame(branch, takenBranch) {
branches = append(branches, branch)
}
}
}
addSkipBranch := func(idx int, o declarative.CreateAuthenticatorOption) {
branch := AuthflowBranch{
Authentication: o.Authentication,
Index: idx,
MaskedClaimValue: o.Target.MaskedDisplayName,
OTPForm: o.OTPForm,
VerificationSkippable: true,
}
if !isAuthflowBranchSame(branch, takenBranch) {
branches = append(branches, branch)
}
}
for idx, o := range branchData.Options {
switch o.Authentication {
case config.AuthenticationFlowAuthenticationPrimaryPassword:
addIndexBranch(idx, o)
case config.AuthenticationFlowAuthenticationPrimaryOOBOTPEmail:
fallthrough
case config.AuthenticationFlowAuthenticationPrimaryOOBOTPSMS:
fallthrough
case config.AuthenticationFlowAuthenticationSecondaryOOBOTPEmail:
fallthrough
case config.AuthenticationFlowAuthenticationSecondaryOOBOTPSMS:
if o.Target != nil && !o.Target.VerificationRequired {
addSkipBranch(idx, o)
} else {
addChannelBranch(idx, o)
}
case config.AuthenticationFlowAuthenticationSecondaryTOTP:
fallthrough
case config.AuthenticationFlowAuthenticationSecondaryPassword:
addIndexBranch(idx, o)
default:
// Ignore other authentications.
break
}
}
return branches
}
func newAuthflowBranchViewModelVerify(screen *webapp.AuthflowScreenWithFlowResponse, branchData declarative.SelectOOBOTPChannelsData) []AuthflowBranch {
takenBranch := AuthflowBranch{
Channel: screen.Screen.TakenChannel,
}
branches := []AuthflowBranch{}
for _, channel := range branchData.Channels {
branch := AuthflowBranch{
Channel: channel,
MaskedClaimValue: branchData.MaskedClaimValue,
}
if !isAuthflowBranchSame(branch, takenBranch) {
branches = append(branches, branch)
}
}
return branches
}