com.google.firebase.auth.internal.FirebaseCustomAuthToken Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of firebase-admin Show documentation

This is the official Firebase Admin Java SDK. Build extraordinary native JVM apps in minutes with Firebase. The Firebase platform can power your app’s backend, user authentication, static hosting, and more.

There is a newer version: 9.4.1

Show newest version

/*
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.firebase.auth.internal;

import com.google.api.client.auth.openidconnect.IdToken;
import com.google.api.client.json.GenericJson;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.webtoken.JsonWebSignature;
import com.google.api.client.util.Key;
import com.google.firebase.auth.FirebaseToken;
import com.google.firebase.internal.Nullable;

import java.io.IOException;

/**
 * Implementation of a JWT used for Firebase Custom Auth.
 *
 * These JWTs are minted by the developer's application and signed by the developer's Private Key
 * and used to trigger an authentication event. These will be exchanged with SecureTokenService for
 * a {@link FirebaseToken}, which is what will actually be sent to Google to perform actions against
 * the Firebase APIs on behalf of the user created, or signed in, using a FirebaseCustomAuthToken.
 */
public final class FirebaseCustomAuthToken extends IdToken {

  static final String FIREBASE_AUDIENCE =
      "https://identitytoolkit.googleapis.com/google.identity.identitytoolkit.v1.IdentityToolkit";
  static final long TOKEN_DURATION_SECONDS = 3600L; // 1 hour

  public FirebaseCustomAuthToken(
      Header header, Payload payload, byte[] signatureBytes, byte[] signedContentBytes) {
    super(header, payload, signatureBytes, signedContentBytes);
  }

  /** Parses a JWT token string and extracts its headers and payload fields. */
  public static FirebaseCustomAuthToken parse(JsonFactory jsonFactory, String tokenString)
      throws IOException {
    JsonWebSignature jws =
        JsonWebSignature.parser(jsonFactory).setPayloadClass(Payload.class).parse(tokenString);
    return new FirebaseCustomAuthToken(
        jws.getHeader(),
        (Payload) jws.getPayload(),
        jws.getSignatureBytes(),
        jws.getSignedContentBytes());
  }

  @Override
  public Payload getPayload() {
    return (Payload) super.getPayload();
  }

  /** Represents a FirebaseCustomAuthToken Payload. */
  public static class Payload extends IdToken.Payload {

    /** The uid of the user to store in the Firebase data store. */
    @Key("uid")
    private String uid;

    /**
     * Any additional claims the developer wishes stored and signed by Firebase.
     *
     * TODO: Come up with a solution to allow this to be parsed as the
     * correct type.
     */
    @Key("claims")
    private GenericJson developerClaims;

    @Key("tenant_id")
    private String tenantId;

    public final String getUid() {
      return uid;
    }

    public Payload setUid(String uid) {
      this.uid = uid;
      return this;
    }

    public final GenericJson getDeveloperClaims() {
      return developerClaims;
    }

    public Payload setDeveloperClaims(GenericJson developerClaims) {
      this.developerClaims = developerClaims;
      return this;
    }

    public final String getTenantId() {
      return tenantId;
    }

    public Payload setTenantId(String tenantId) {
      this.tenantId = tenantId;
      return this;
    }

    @Override
    public Payload setIssuer(String issuer) {
      return (Payload) super.setIssuer(issuer);
    }

    @Override
    public Payload setSubject(String subject) {
      return (Payload) super.setSubject(subject);
    }

    @Override
    public Payload setAudience(Object audience) {
      return (Payload) super.setAudience(audience);
    }

    @Override
    public Payload setIssuedAtTimeSeconds(Long issuedAt) {
      return (Payload) super.setIssuedAtTimeSeconds(issuedAt);
    }

    @Override
    public Payload setExpirationTimeSeconds(Long expirationTime) {
      return (Payload) super.setExpirationTimeSeconds(expirationTime);
    }
  }
}