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Advanced integration

This document goes into detail on advanced topics in specific use cases after you have already successfully integrated a basic user interface. The topics range from advanced redirects to passwordless and two-factor authentication. Read the Basic integration document first to learn about flows and methods.

Advanced redirects​

Most applications that use Ory need advanced URL redirects. For example, the application might have a page where the user is redirected when their session expires. After the user re-authenticates, they should be redirected to the page they were using when their session expired.

To achieve this, the application can pass a ?return_to=<url> query parameter to the endpoint that initializes a flow: /self-service/{flow_type}/browser?return_to=https://myapp.com/protected.

The return_to URL is the redirect URL after the flow is completed. For example, in the case of a login flow the redirect happens after a successful login.

This is a breakdown of how the redirect works:

  1. Initialize the flow with a return_to URL.
  2. Use the flow data to render the UI.
  3. Submit the flow with user data.
  4. If the flow is successful, the user is redirected to the URL defined in the return_to parameter.

The return_to query parameter doesn't automatically persist across different flows and must be added to new flows. For example, if the user starts a login flow with return_to URL set and then switches to a registration flow, the return_to URL isn't used for the registration flow. In such a case, your application can re-use the same return_to from the login flow by extracting the return_to URL from the login flow's flow.return_to and adding it to the registration flow.

sdk.getLoginFlow({ id: flow }).then(({ data: flow }) => {
  const returnTo = flow.return_to
  return sdk.createBrowserRegistrationFlow({ id: flow.id, return_to: returnTo })
})

The return_to URL persists across flows only when a recovery flow transitions into a the settings flow.

Let's take a look at an example of how this works:

  1. Create a recovery flow with return_to.
  2. Email is sent with a link or code method.
  3. User completes the recovery flow by submitting the code or clicking the link.
  4. The user gets a sessions and is redirected through the settings flow.
  5. The user submits the settings flow with an updated password.
  6. The user is redirected to the return_to URL.

Login​

Refreshing user session​

To re-authenticate an active user session and confirm the same user is logged in, the application implementing the UI can request Ory to force the user to authenticate again through the ?refresh=true query parameter. To do that, call the /self-service/login/browser?refresh=true endpoint. This is only applicable to the login flow and requires the user to already have a session.

This is a common use case for refreshing a session:

  1. User logs in.
  2. User interacts with the application.
  3. User is inactive for a period of time.
  4. The user returns before session lifespan expires.
  5. The application needs to confirm that the user interacting with the application is the same user that logged in.
  6. The session is refreshed through a login flow with the ?refresh=true query parameter.
sdk.createBrowserLoginFlow({ refresh: true })

Social sign-in​

When using social sign-in, the user must be redirected using a native form POST. In single-page applications the page is never redirected. For the application to then have a background POST on other methods such as password, the application must separate the flow data across two forms.

{/*This form will do a native post request to Ory for the selected provider*/}
<form action={flow.action} method={flow.method}>
    <button type="submit" value="google">Sign in with Google</button>
    <button type="submit" value="facebook">Sign in with Facebook</button>
</form>

<form action={flow.action} method={flow.method} onSubmit={submitHandler}>
    {/*Map the other flow groups here such as `default` and `password`*/}
</form>

Upstream provider parameters​

In some cases, it is possible to pass additional parameters to the upstream provider. For example, when using the Google provider, it is possible to pass the login_hint, hd and prompt parameters.

The login_hint parameter suppresses the account chooser and either pre-fills the email box on the sign-in form, or selects the proper session. The hd parameter limits the login/registration process to a Google Organization, for example mycollege.edu. The prompt parameter specifies whether the Authorization Server prompts the End-User for reauthentication and consent, for example select_account. To pass these parameters on login, registration and settings flows, the application can use the submit form body to pass the parameters. For example:

<form action="https://{project.slug}.projects.oryapis.com/self-service/login?flow=<flow-id>" method="POST">
  <input type="submit" name="provider" value="google" />
  <input type="hidden" name="upstream_parameters.login_hint" value="foo@bar.com" />
  <input type="hidden" name="upstream_parameters.hd" value="bar.com" />
  <input type="hidden" name="upstream_parameters.prompt" value="select_account" />
</form>
note

Only the login_hint, hd and prompt parameters are currently supported.

Two-factor authentication​

Two-factor authentication (2FA) is a second step used to confirm the user's identity. When creating a login flow, you can specify the ?aal=<level> query parameter to specify the required level of authentication: aal1 or aal2.

To initialize the second authentication factor, the user must already have a valid session cookie. The /sessions/whoami endpoint returns an error with the session_aal2_required ID if the user is required to complete a second factor.

tip

Read this document to learn more about UI error messages.

sdk
  .toSession()
  .then(({ data: session }) => {
    // we set the session data which contains the user Identifier and other traits.
  })
  .catch((err: AxiosError) => {
    switch (error.response?.status) {
      case 403: {
        // the user might have a session, but would require 2FA (Two-Factor Authentication)
        if (error.response?.data.error?.id === "session_aal2_required") {
          navigate("/login?aal2=true", { replace: true })
          return
        }
      }
    }
  })

Passwordless authentication​

Passwordless authentication uses the WebAuthn specification to authenticate users with hardware keys, biometrics, or passkeys.

For an application to use WebAuthn, add the /.well-known/ory/webauthn.js WebAuthn JavaScript to the page. Ory provides the on-click handler for the button to start the passwordless authentication flow.

The flow works as follows:

  1. Create login flow.
  2. Render the UI with the webauthn group.
  3. User enters their identifier and clicks the Sign in with security key button.
  4. The form is submitted which starts a new flow with the webauthn group only.
  5. Render the new UI which prompts the user to insert their security key.
  6. The user inserts their security key and clicks the Continue button.
<head>
  <script src="/.well-known/ory/webauthn.js"></script>
</head>
import {
  Configuration,
  FrontendApi,
  LoginFlow,
  UiNodeInputAttributes,
  UiNodeScriptAttributes,
} from "@ory/client"
import {
  filterNodesByGroups,
  isUiNodeInputAttributes,
} from "@ory/integrations/ui"
import { HTMLAttributeReferrerPolicy, useEffect, useState } from "react"

const frontend = new FrontendApi(
  new Configuration({
    basePath: "http://localhost:4000", // Use your local Ory Tunnel URL
    baseOptions: {
      withCredentials: true,
    },
  }),
)

function PasswordlessMapping() {
  const [flow, setFlow] = useState<LoginFlow>()

  useEffect(() => {
    frontend.createBrowserLoginFlow().then(({ data: flow }) => setFlow(flow))
  }, [])

  // Add the WebAuthn script to the DOM
  useEffect(() => {
    const scriptNodes = filterNodesByGroups({
      nodes: flow.ui.nodes,
      groups: "webauthn",
      attributes: "text/javascript",
      withoutDefaultGroup: true,
      withoutDefaultAttributes: true,
    }).map((node) => {
      const attr = node.attributes as UiNodeScriptAttributes
      const script = document.createElement("script")
      script.src = attr.src
      script.type = attr.type
      script.async = attr.async
      script.referrerPolicy = attr.referrerpolicy as HTMLAttributeReferrerPolicy
      script.crossOrigin = attr.crossorigin
      script.integrity = attr.integrity
      document.body.appendChild(script)
      return script
    })

    // cleanup
    return () => {
      scriptNodes.forEach((script) => {
        document.body.removeChild(script)
      })
    }
  }, [flow.ui.nodes])

  return flow ? (
    <form action={flow.ui.action} method={flow.ui.method}>
      {filterNodesByGroups({
        nodes: flow.ui.nodes,
        // we will also map default fields here but not oidc and password fields
        groups: ["webauthn"],
        attributes: ["hidden", "submit", "button"],
      }).map((node) => {
        if (isUiNodeInputAttributes(node.attributes)) {
          const attrs = node.attributes as UiNodeInputAttributes
          const nodeType = attrs.type
          const submit: any = {
            type: attrs.type as "submit" | "reset" | "button" | undefined,
            name: attrs.name,
            ...(attrs.value && { value: attrs.value }),
          }

          switch (nodeType) {
            case "button":
            case "submit":
              if (attrs.onclick) {
                // This is a bit hacky but it wouldn't work otherwise.
                const oc = attrs.onclick
                submit.onClick = () => {
                  eval(oc)
                }
              }

              return <button disabled={attrs.disabled} {...submit} />
            default:
              return (
                <input
                  name={attrs.name}
                  type={attrs.type}
                  defaultValue={attrs.value}
                  required={attrs.required}
                  disabled={attrs.disabled}
                />
              )
          }
        }
      })}
    </form>
  ) : (
    <div>Loading...</div>
  )
}

export default PasswordlessMapping

This is an example response from the login flow with passwordless authentication enabled. This is the first step of the flow where the user enters their identifier.

{
  ui: {
    nodes: [
      {
        type: "input",
        group: "webauthn",
        attributes: {
          name: "method",
          type: "submit",
          value: "webauthn",
          disabled: false,
          node_type: "input",
        },
        messages: [],
        meta: {
          label: {
            id: 1010001,
            text: "Sign in with security key",
            type: "info",
            context: {},
          },
        },
      },
    ],
  },
}

After the user is redirected with a new flow, the response contains the webauthn group only. In this response, the button onclick attribute calls the script added in the header/body of the page. The button then triggers the WebAuthn prompt for the security key.

{
  ui: {
    nodes: [
      {
        type: "input",
        group: "webauthn",
        attributes: {
          name: "webauthn_login_trigger",
          type: "button",
          value: "",
          disabled: false,
          onclick: 'window.__oryWebAuthnLogin({"publicKey":{"challenge":"LLoTYU0Xv7QkmIFiwKDOpr1XeNU5c0TGnCgzj6kqSIQ=","timeout":60000,"rpId":"auth.example.com","allowCredentials":[{"type":"public-key","id":"3DUZPEd3DwUCaRkyTy0L0MntQElA0AH4uAUydiVhBdGWTXHS1TDsY+lgHRhTj52cFUL/uua2Af+dgqD14a/rHA=="}],"userVerification":"discouraged"}})',
          node_type: "input",
        },
        messages: [],
        meta: {
          label: {
            id: 1010013,
            text: "Continue",
            type: "info",
          },
        },
      },
    ],
  },
}

SPAs and the '422' error​

A response code 422 indicates that the browser needs to be redirected with a newly created flow. Since this is an SPA, the new flow ID can be extracted from the payload and the response can be retrieved in the background instead of a redirect.

This is an example code 422 error:

{
  error: {
    id: "browser_location_change_required",
    code: 422,
    status: "Unprocessable Entity",
    reason: "In order to complete this flow please redirect the browser to: /ui/login?flow=ad574ad7-1a3c-4b52-9f54-ef9e866f3cec",
    message: "browser location change required",
  },
  redirect_browser_to: "/ui/login?flow=ad574ad7-1a3c-4b52-9f54-ef9e866f3cec",
}