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@@ -0,0 +1,569 @@
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import { CommonModule } from "@angular/common";
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import { Component, OnDestroy, OnInit } from "@angular/core";
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import { takeUntilDestroyed } from "@angular/core/rxjs-interop";
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import { IsActiveMatchOptions, Router, RouterModule } from "@angular/router";
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import { firstValueFrom, map } from "rxjs";
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import { JslibModule } from "@bitwarden/angular/jslib.module";
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import {
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AuthRequestLoginCredentials,
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AuthRequestServiceAbstraction,
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LoginEmailServiceAbstraction,
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LoginStrategyServiceAbstraction,
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} from "@bitwarden/auth/common";
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import { AccountService } from "@bitwarden/common/auth/abstractions/account.service";
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import { AnonymousHubService } from "@bitwarden/common/auth/abstractions/anonymous-hub.service";
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import { AuthService } from "@bitwarden/common/auth/abstractions/auth.service";
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import { DeviceTrustServiceAbstraction } from "@bitwarden/common/auth/abstractions/device-trust.service.abstraction";
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import { AuthRequestType } from "@bitwarden/common/auth/enums/auth-request-type";
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import { AuthenticationStatus } from "@bitwarden/common/auth/enums/authentication-status";
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import { AdminAuthRequestStorable } from "@bitwarden/common/auth/models/domain/admin-auth-req-storable";
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import { AuthResult } from "@bitwarden/common/auth/models/domain/auth-result";
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import { ForceSetPasswordReason } from "@bitwarden/common/auth/models/domain/force-set-password-reason";
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import { AuthRequest } from "@bitwarden/common/auth/models/request/auth.request";
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import { AuthRequestResponse } from "@bitwarden/common/auth/models/response/auth-request.response";
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import { ClientType, HttpStatusCode } from "@bitwarden/common/enums";
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import { ErrorResponse } from "@bitwarden/common/models/response/error.response";
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import { AppIdService } from "@bitwarden/common/platform/abstractions/app-id.service";
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import { CryptoFunctionService } from "@bitwarden/common/platform/abstractions/crypto-function.service";
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import { I18nService } from "@bitwarden/common/platform/abstractions/i18n.service";
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import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
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import { PlatformUtilsService } from "@bitwarden/common/platform/abstractions/platform-utils.service";
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import { ValidationService } from "@bitwarden/common/platform/abstractions/validation.service";
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import { Utils } from "@bitwarden/common/platform/misc/utils";
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import { UserId } from "@bitwarden/common/types/guid";
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import { SyncService } from "@bitwarden/common/vault/abstractions/sync/sync.service.abstraction";
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import { ButtonModule, LinkModule, ToastService } from "@bitwarden/components";
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import { PasswordGenerationServiceAbstraction } from "@bitwarden/generator-legacy";
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import { AuthRequestApiService } from "../../common/abstractions/auth-request-api.service";
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enum Flow {
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StandardAuthRequest, // when user clicks "Login with device" from /login or "Approve from your other device" from /login-initiated
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AdminAuthRequest, // when user clicks "Request admin approval" from /login-initiated
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}
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const matchOptions: IsActiveMatchOptions = {
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paths: "exact",
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queryParams: "ignored",
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fragment: "ignored",
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matrixParams: "ignored",
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};
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@Component({
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standalone: true,
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templateUrl: "./login-via-auth-request.component.html",
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imports: [ButtonModule, CommonModule, JslibModule, LinkModule, RouterModule],
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})
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export class LoginViaAuthRequestComponent implements OnInit, OnDestroy {
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private authRequest: AuthRequest;
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private authRequestKeyPair: { publicKey: Uint8Array; privateKey: Uint8Array };
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private authStatus: AuthenticationStatus;
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private showResendNotificationTimeoutSeconds = 12;
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protected backToRoute = "/login";
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protected clientType: ClientType;
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protected ClientType = ClientType;
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protected email: string;
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protected fingerprintPhrase: string;
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protected showResendNotification = false;
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protected Flow = Flow;
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protected flow = Flow.StandardAuthRequest;
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constructor(
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private accountService: AccountService,
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private anonymousHubService: AnonymousHubService,
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private appIdService: AppIdService,
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private authRequestApiService: AuthRequestApiService,
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private authRequestService: AuthRequestServiceAbstraction,
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private authService: AuthService,
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private cryptoFunctionService: CryptoFunctionService,
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private deviceTrustService: DeviceTrustServiceAbstraction,
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private i18nService: I18nService,
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private logService: LogService,
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private loginEmailService: LoginEmailServiceAbstraction,
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private loginStrategyService: LoginStrategyServiceAbstraction,
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private passwordGenerationService: PasswordGenerationServiceAbstraction,
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private platformUtilsService: PlatformUtilsService,
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private router: Router,
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private syncService: SyncService,
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private toastService: ToastService,
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private validationService: ValidationService,
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) {
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this.clientType = this.platformUtilsService.getClientType();
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// Gets SignalR push notification
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// Only fires on approval to prevent enumeration
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this.authRequestService.authRequestPushNotification$
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.pipe(takeUntilDestroyed())
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.subscribe((requestId) => {
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this.verifyAndHandleApprovedAuthReq(requestId).catch((e: Error) => {
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this.toastService.showToast({
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variant: "error",
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title: this.i18nService.t("error"),
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message: e.message,
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});
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this.logService.error("Failed to use approved auth request: " + e.message);
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});
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});
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}
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async ngOnInit(): Promise<void> {
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// Get the authStatus early because we use it in both flows
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this.authStatus = await firstValueFrom(this.authService.activeAccountStatus$);
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const userHasAuthenticatedViaSSO = this.authStatus === AuthenticationStatus.Locked;
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if (userHasAuthenticatedViaSSO) {
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this.backToRoute = "/login-initiated";
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}
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/**
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* The LoginViaAuthRequestComponent handles both the `login-with-device` and
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* the `admin-approval-requested` routes. Therefore we check the route to determine
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* which flow to initialize.
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*/
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if (this.router.isActive("admin-approval-requested", matchOptions)) {
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await this.initAdminAuthRequestFlow();
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} else {
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await this.initStandardAuthRequestFlow();
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}
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}
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private async initAdminAuthRequestFlow(): Promise<void> {
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this.flow = Flow.AdminAuthRequest;
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// Get email from state for admin auth requests because it is available and also
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// prevents it from being lost on refresh as the loginEmailService email does not persist.
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this.email = await firstValueFrom(
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this.accountService.activeAccount$.pipe(map((a) => a?.email)),
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);
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if (!this.email) {
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await this.handleMissingEmail();
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return;
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}
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// We only allow a single admin approval request to be active at a time
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// so we must check state to see if we have an existing one or not
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const userId = (await firstValueFrom(this.accountService.activeAccount$)).id;
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const existingAdminAuthRequest = await this.authRequestService.getAdminAuthRequest(userId);
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if (existingAdminAuthRequest) {
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await this.handleExistingAdminAuthRequest(existingAdminAuthRequest, userId);
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} else {
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await this.startAdminAuthRequestLogin();
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}
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}
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private async initStandardAuthRequestFlow(): Promise<void> {
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this.flow = Flow.StandardAuthRequest;
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this.email = await firstValueFrom(this.loginEmailService.loginEmail$);
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if (!this.email) {
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await this.handleMissingEmail();
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return;
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}
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await this.startStandardAuthRequestLogin();
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}
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private async handleMissingEmail(): Promise<void> {
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this.toastService.showToast({
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variant: "error",
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title: null,
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message: this.i18nService.t("userEmailMissing"),
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});
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await this.router.navigate([this.backToRoute]);
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}
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async ngOnDestroy(): Promise<void> {
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await this.anonymousHubService.stopHubConnection();
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}
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private async startAdminAuthRequestLogin(): Promise<void> {
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try {
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await this.buildAuthRequest(AuthRequestType.AdminApproval);
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const authRequestResponse = await this.authRequestApiService.postAdminAuthRequest(
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this.authRequest,
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);
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const adminAuthReqStorable = new AdminAuthRequestStorable({
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id: authRequestResponse.id,
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privateKey: this.authRequestKeyPair.privateKey,
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});
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const userId = (await firstValueFrom(this.accountService.activeAccount$)).id;
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await this.authRequestService.setAdminAuthRequest(adminAuthReqStorable, userId);
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if (authRequestResponse.id) {
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await this.anonymousHubService.createHubConnection(authRequestResponse.id);
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}
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} catch (e) {
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this.logService.error(e);
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}
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}
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protected async startStandardAuthRequestLogin(): Promise<void> {
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this.showResendNotification = false;
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try {
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await this.buildAuthRequest(AuthRequestType.AuthenticateAndUnlock);
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const authRequestResponse = await this.authRequestApiService.postAuthRequest(
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this.authRequest,
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);
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if (authRequestResponse.id) {
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await this.anonymousHubService.createHubConnection(authRequestResponse.id);
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}
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} catch (e) {
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this.logService.error(e);
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}
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setTimeout(() => {
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this.showResendNotification = true;
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}, this.showResendNotificationTimeoutSeconds * 1000);
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}
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private async buildAuthRequest(authRequestType: AuthRequestType): Promise<void> {
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const authRequestKeyPairArray = await this.cryptoFunctionService.rsaGenerateKeyPair(2048);
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this.authRequestKeyPair = {
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publicKey: authRequestKeyPairArray[0],
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privateKey: authRequestKeyPairArray[1],
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};
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const deviceIdentifier = await this.appIdService.getAppId();
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const publicKey = Utils.fromBufferToB64(this.authRequestKeyPair.publicKey);
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const accessCode = await this.passwordGenerationService.generatePassword({
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type: "password",
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length: 25,
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});
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this.fingerprintPhrase = await this.authRequestService.getFingerprintPhrase(
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this.email,
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this.authRequestKeyPair.publicKey,
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);
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this.authRequest = new AuthRequest(
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this.email,
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deviceIdentifier,
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publicKey,
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authRequestType,
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accessCode,
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);
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}
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private async handleExistingAdminAuthRequest(
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adminAuthRequestStorable: AdminAuthRequestStorable,
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userId: UserId,
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): Promise<void> {
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// Note: on login, the SSOLoginStrategy will also call to see if an existing admin auth req
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// has been approved and handle it if so.
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// Regardless, we always retrieve the auth request from the server and verify and handle status changes here as well
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let adminAuthRequestResponse: AuthRequestResponse;
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try {
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adminAuthRequestResponse = await this.authRequestApiService.getAuthRequest(
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adminAuthRequestStorable.id,
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);
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} catch (error) {
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if (error instanceof ErrorResponse && error.statusCode === HttpStatusCode.NotFound) {
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return await this.handleExistingAdminAuthReqDeletedOrDenied(userId);
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}
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}
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// Request doesn't exist anymore
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if (!adminAuthRequestResponse) {
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return await this.handleExistingAdminAuthReqDeletedOrDenied(userId);
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}
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// Re-derive the user's fingerprint phrase
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// It is important to not use the server's public key here as it could have been compromised via MITM
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const derivedPublicKeyArrayBuffer = await this.cryptoFunctionService.rsaExtractPublicKey(
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adminAuthRequestStorable.privateKey,
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);
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this.fingerprintPhrase = await this.authRequestService.getFingerprintPhrase(
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this.email,
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derivedPublicKeyArrayBuffer,
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);
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// Request denied
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if (adminAuthRequestResponse.isAnswered && !adminAuthRequestResponse.requestApproved) {
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return await this.handleExistingAdminAuthReqDeletedOrDenied(userId);
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}
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// Request approved
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if (adminAuthRequestResponse.requestApproved) {
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return await this.decryptViaApprovedAuthRequest(
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adminAuthRequestResponse,
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adminAuthRequestStorable.privateKey,
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userId,
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);
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}
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// Request still pending response from admin
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// set keypair and create hub connection so that any approvals will be received via push notification
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this.authRequestKeyPair = { privateKey: adminAuthRequestStorable.privateKey, publicKey: null };
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await this.anonymousHubService.createHubConnection(adminAuthRequestStorable.id);
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}
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private async verifyAndHandleApprovedAuthReq(requestId: string): Promise<void> {
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/**
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* ***********************************
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* Standard Auth Request Flows
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* ***********************************
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*
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* Flow 1: Unauthed user requests approval from device; Approving device has a masterKey in memory.
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*
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* Unauthed user clicks "Login with device" > navigates to /login-with-device which creates a StandardAuthRequest
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* > receives approval from a device with authRequestPublicKey(masterKey) > decrypts masterKey > decrypts userKey > proceed to vault
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*
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* Flow 2: Unauthed user requests approval from device; Approving device does NOT have a masterKey in memory.
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*
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* Unauthed user clicks "Login with device" > navigates to /login-with-device which creates a StandardAuthRequest
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* > receives approval from a device with authRequestPublicKey(userKey) > decrypts userKey > proceeds to vault
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*
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* Note: this flow is an uncommon scenario and relates to TDE off-boarding. The following describes how a user could get into this flow:
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* 1) An SSO TD user logs into a device via an Admin auth request approval, therefore this device does NOT have a masterKey in memory.
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* 2) The org admin...
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* (2a) Changes the member decryption options from "Trusted devices" to "Master password" AND
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* (2b) Turns off the "Require single sign-on authentication" policy
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* 3) On another device, the user clicks "Login with device", which they can do because the org no longer requires SSO.
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* 4) The user approves from the device they had previously logged into with SSO TD, which does NOT have a masterKey in memory (see step 1 above).
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*
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* Flow 3: Authed SSO TD user requests approval from device; Approving device has a masterKey in memory.
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*
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* SSO TD user authenticates via SSO > navigates to /login-initiated > clicks "Approve from your other device"
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* > navigates to /login-with-device which creates a StandardAuthRequest > receives approval from device with authRequestPublicKey(masterKey)
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* > decrypts masterKey > decrypts userKey > establishes trust (if required) > proceeds to vault
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*
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* Flow 4: Authed SSO TD user requests approval from device; Approving device does NOT have a masterKey in memory.
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*
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* SSO TD user authenticates via SSO > navigates to /login-initiated > clicks "Approve from your other device"
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* > navigates to /login-with-device which creates a StandardAuthRequest > receives approval from device with authRequestPublicKey(userKey)
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* > decrypts userKey > establishes trust (if required) > proceeds to vault
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*
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* ***********************************
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* Admin Auth Request Flow
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* ***********************************
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*
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* Flow: Authed SSO TD user requests admin approval.
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*
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* SSO TD user authenticates via SSO > navigates to /login-initiated > clicks "Request admin approval"
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* > navigates to /admin-approval-requested which creates an AdminAuthRequest > receives approval from device with authRequestPublicKey(userKey)
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* > decrypts userKey > establishes trust (if required) > proceeds to vault
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*
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* Note: TDE users are required to be enrolled in admin password reset, which gives the admin access to the user's userKey.
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* This is how admins are able to send over the authRequestPublicKey(userKey) to the user to allow them to unlock.
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*
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*
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* Summary Table
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* |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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* | Flow | Auth Status | Clicks Button [active route] | Navigates to | Approving device has masterKey in memory (see note 1) |
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* |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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* | Standard Flow 1 | unauthed | "Login with device" [/login] | /login-with-device | yes |
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* | Standard Flow 2 | unauthed | "Login with device" [/login] | /login-with-device | no |
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* | Standard Flow 3 | authed | "Approve from your other device" [/login-initiated] | /login-with-device | yes |
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* | Standard Flow 4 | authed | "Approve from your other device" [/login-initiated] | /login-with-device | no | |
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* | Admin Flow | authed | "Request admin approval" [/login-initiated] | /admin-approval-requested | NA - admin requests always send encrypted userKey |
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* |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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* * Note 1: The phrase "in memory" here is important. It is possible for a user to have a master password for their account, but not have a masterKey IN MEMORY for
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* a specific device. For example, if a user registers an account with a master password, then joins an SSO TD org, then logs in to a device via SSO and
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* admin auth request, they are now logged into that device but that device does not have masterKey IN MEMORY.
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*/
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try {
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const userHasAuthenticatedViaSSO = this.authStatus === AuthenticationStatus.Locked;
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if (userHasAuthenticatedViaSSO) {
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// Get the auth request from the server
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// User is authenticated, therefore the endpoint does not require an access code.
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const authRequestResponse = await this.authRequestApiService.getAuthRequest(requestId);
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if (authRequestResponse.requestApproved) {
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// Handles Standard Flows 3-4 and Admin Flow
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await this.handleAuthenticatedFlows(authRequestResponse);
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}
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} else {
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// Get the auth request from the server
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// User is unauthenticated, therefore the endpoint requires an access code for user verification.
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const authRequestResponse = await this.authRequestApiService.getAuthResponse(
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requestId,
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this.authRequest.accessCode,
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);
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if (authRequestResponse.requestApproved) {
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// Handles Standard Flows 1-2
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await this.handleUnauthenticatedFlows(authRequestResponse, requestId);
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}
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}
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} catch (error) {
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if (error instanceof ErrorResponse) {
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await this.router.navigate([this.backToRoute]);
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this.validationService.showError(error);
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return;
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}
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this.logService.error(error);
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}
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}
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private async handleAuthenticatedFlows(authRequestResponse: AuthRequestResponse) {
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const userId = (await firstValueFrom(this.accountService.activeAccount$)).id;
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await this.decryptViaApprovedAuthRequest(
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authRequestResponse,
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this.authRequestKeyPair.privateKey,
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userId,
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);
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}
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private async handleUnauthenticatedFlows(
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authRequestResponse: AuthRequestResponse,
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requestId: string,
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) {
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const authRequestLoginCredentials = await this.buildAuthRequestLoginCredentials(
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requestId,
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authRequestResponse,
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);
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// Note: keys are set by AuthRequestLoginStrategy success handling
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const authResult = await this.loginStrategyService.logIn(authRequestLoginCredentials);
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await this.handlePostLoginNavigation(authResult);
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}
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private async decryptViaApprovedAuthRequest(
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authRequestResponse: AuthRequestResponse,
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privateKey: ArrayBuffer,
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userId: UserId,
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): Promise<void> {
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/**
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* See verifyAndHandleApprovedAuthReq() for flow details.
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*
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* We determine the type of `key` based on the presence or absence of `masterPasswordHash`:
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* - If `masterPasswordHash` has a value, we receive the `key` as an authRequestPublicKey(masterKey) [plus we have authRequestPublicKey(masterPasswordHash)]
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* - If `masterPasswordHash` does not have a value, we receive the `key` as an authRequestPublicKey(userKey)
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*/
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if (authRequestResponse.masterPasswordHash) {
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// ...in Standard Auth Request Flow 3
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await this.authRequestService.setKeysAfterDecryptingSharedMasterKeyAndHash(
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authRequestResponse,
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privateKey,
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userId,
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);
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} else {
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// ...in Standard Auth Request Flow 4 or Admin Auth Request Flow
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await this.authRequestService.setUserKeyAfterDecryptingSharedUserKey(
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authRequestResponse,
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privateKey,
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userId,
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);
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}
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// clear the admin auth request from state so it cannot be used again (it's a one time use)
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// TODO: this should eventually be enforced via deleting this on the server once it is used
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await this.authRequestService.clearAdminAuthRequest(userId);
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this.toastService.showToast({
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variant: "success",
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title: null,
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message: this.i18nService.t("loginApproved"),
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});
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// Now that we have a decrypted user key in memory, we can check if we
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// need to establish trust on the current device
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const activeAccount = await firstValueFrom(this.accountService.activeAccount$);
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await this.deviceTrustService.trustDeviceIfRequired(activeAccount.id);
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await this.handleSuccessfulLoginNavigation();
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}
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/**
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* Takes an `AuthRequestResponse` and decrypts the `key` to build an `AuthRequestLoginCredentials`
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* object for use in the `AuthRequestLoginStrategy`.
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*
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* The credentials object that gets built is affected by whether the `authRequestResponse.key`
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* is an encrypted MasterKey or an encrypted UserKey.
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*/
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private async buildAuthRequestLoginCredentials(
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requestId: string,
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authRequestResponse: AuthRequestResponse,
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): Promise<AuthRequestLoginCredentials> {
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/**
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* See verifyAndHandleApprovedAuthReq() for flow details.
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*
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* We determine the type of `key` based on the presence or absence of `masterPasswordHash`:
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* - If `masterPasswordHash` has a value, we receive the `key` as an authRequestPublicKey(masterKey) [plus we have authRequestPublicKey(masterPasswordHash)]
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* - If `masterPasswordHash` does not have a value, we receive the `key` as an authRequestPublicKey(userKey)
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*/
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if (authRequestResponse.masterPasswordHash) {
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// ...in Standard Auth Request Flow 1
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const { masterKey, masterKeyHash } =
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await this.authRequestService.decryptPubKeyEncryptedMasterKeyAndHash(
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authRequestResponse.key,
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authRequestResponse.masterPasswordHash,
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this.authRequestKeyPair.privateKey,
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);
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return new AuthRequestLoginCredentials(
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this.email,
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this.authRequest.accessCode,
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requestId,
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null, // no userKey
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masterKey,
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masterKeyHash,
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);
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} else {
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// ...in Standard Auth Request Flow 2
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const userKey = await this.authRequestService.decryptPubKeyEncryptedUserKey(
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authRequestResponse.key,
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this.authRequestKeyPair.privateKey,
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);
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return new AuthRequestLoginCredentials(
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this.email,
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this.authRequest.accessCode,
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requestId,
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userKey,
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null, // no masterKey
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null, // no masterKeyHash
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);
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}
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}
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private async handleExistingAdminAuthReqDeletedOrDenied(userId: UserId) {
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// clear the admin auth request from state
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await this.authRequestService.clearAdminAuthRequest(userId);
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// start new auth request
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await this.startAdminAuthRequestLogin();
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}
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private async handlePostLoginNavigation(loginResponse: AuthResult) {
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if (loginResponse.requiresTwoFactor) {
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await this.router.navigate(["2fa"]);
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} else if (loginResponse.forcePasswordReset != ForceSetPasswordReason.None) {
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await this.router.navigate(["update-temp-password"]);
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} else {
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await this.handleSuccessfulLoginNavigation();
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}
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}
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private async handleSuccessfulLoginNavigation() {
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if (this.flow === Flow.StandardAuthRequest) {
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// Only need to set remembered email on standard login with auth req flow
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await this.loginEmailService.saveEmailSettings();
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}
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await this.syncService.fullSync(true);
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await this.router.navigate(["vault"]);
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}
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}
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rr-bw
GitHub