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/*
* 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.database.util;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* Represents a "gauth" token used by the Server SDK, which can contain a token and optionally a
* auth payload.
*
* HACK: Rather than plumb GAuthToken through our internals we serialize it to/from a string
* (using JSON) and pass it through our normal plumbing that expects token to be a String.
*/
public class GAuthToken {
// Normal tokens will be JWTs or possibly Firebase Secrets, neither of which will contain "|"
// so this should be a safe prefix.
private static final String TOKEN_PREFIX = "gauth|";
private static final String AUTH_KEY = "auth";
private static final String TOKEN_KEY = "token";
private final String token;
private final Map auth;
public GAuthToken(String token, Map auth) {
this.token = token;
this.auth = auth;
}
public static GAuthToken tryParseFromString(String rawToken) {
if (!rawToken.startsWith(TOKEN_PREFIX)) {
return null;
}
String gauthToken = rawToken.substring(TOKEN_PREFIX.length());
try {
Map tokenMap = JsonMapper.parseJson(gauthToken);
String token = (String) tokenMap.get(TOKEN_KEY);
@SuppressWarnings("unchecked")
Map auth = (Map) tokenMap.get(AUTH_KEY);
return new GAuthToken(token, auth);
} catch (IOException e) {
throw new RuntimeException("Failed to parse gauth token", e);
}
}
public String serializeToString() {
Map tokenMap = new HashMap<>();
tokenMap.put(TOKEN_KEY, token);
tokenMap.put(AUTH_KEY, auth);
try {
String json = JsonMapper.serializeJson(tokenMap);
return TOKEN_PREFIX + json;
} catch (IOException e) {
throw new RuntimeException("Failed to serialize gauth token", e);
}
}
public String getToken() {
return this.token;
}
public Map getAuth() {
return this.auth;
}
}