| // Copyright (C) 2012 The Android Open Source Project |
| // |
| // 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.gerrit.httpd; |
| |
| import com.google.gerrit.reviewdb.client.Account; |
| import com.google.gerrit.server.config.AuthConfig; |
| import com.google.gwtjsonrpc.server.SignedToken; |
| import com.google.gwtjsonrpc.server.ValidToken; |
| import com.google.gwtjsonrpc.server.XsrfException; |
| import com.google.inject.AbstractModule; |
| import com.google.inject.Inject; |
| |
| import org.eclipse.jgit.util.Base64; |
| |
| import java.io.UnsupportedEncodingException; |
| |
| /** Verifies the token sent by {@link RestApiServlet}. */ |
| public class SignedTokenRestTokenVerifier implements RestTokenVerifier { |
| private final SignedToken restToken; |
| |
| public static class Module extends AbstractModule { |
| @Override |
| protected void configure() { |
| bind(RestTokenVerifier.class).to(SignedTokenRestTokenVerifier.class); |
| } |
| } |
| |
| @Inject |
| SignedTokenRestTokenVerifier(AuthConfig config) { |
| restToken = config.getRestToken(); |
| } |
| |
| @Override |
| public String sign(Account.Id user, String url) { |
| try { |
| String payload = String.format("%s:%s", user, url); |
| byte[] utf8 = payload.getBytes("UTF-8"); |
| String base64 = Base64.encodeBytes(utf8); |
| return restToken.newToken(base64); |
| } catch (XsrfException e) { |
| throw new IllegalArgumentException(e); |
| } catch (UnsupportedEncodingException e) { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| @Override |
| public void verify(Account.Id user, String url, String tokenString) |
| throws InvalidTokenException { |
| ValidToken token; |
| try { |
| token = restToken.checkToken(tokenString, null); |
| } catch (XsrfException err) { |
| throw new InvalidTokenException(err); |
| } |
| if (token == null || token.getData() == null || token.getData().isEmpty()) { |
| throw new InvalidTokenException(); |
| } |
| |
| String payload; |
| try { |
| payload = new String(Base64.decode(token.getData()), "UTF-8"); |
| } catch (UnsupportedEncodingException err) { |
| throw new InvalidTokenException(err); |
| } |
| |
| int colonPos = payload.indexOf(':'); |
| if (colonPos == -1) { |
| throw new InvalidTokenException(); |
| } |
| |
| Account.Id tokenUser; |
| try { |
| tokenUser = Account.Id.parse(payload.substring(0, colonPos)); |
| } catch (IllegalArgumentException err) { |
| throw new InvalidTokenException(err); |
| } |
| |
| String tokenUrl = payload.substring(colonPos+1); |
| |
| if (!tokenUser.equals(user) || !tokenUrl.equals(url)) { |
| throw new InvalidTokenException(); |
| } |
| } |
| } |