| // Copyright (C) 2017 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.googlesource.gerrit.plugins.oauth; |
| |
| import static com.google.gerrit.server.OutputFormat.JSON; |
| import static javax.servlet.http.HttpServletResponse.SC_OK; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import com.github.scribejava.core.builder.ServiceBuilder; |
| import com.github.scribejava.core.model.OAuth2AccessToken; |
| import com.github.scribejava.core.model.OAuthRequest; |
| import com.github.scribejava.core.model.Response; |
| import com.github.scribejava.core.model.Verb; |
| import com.github.scribejava.core.oauth.OAuth20Service; |
| import com.google.common.base.CharMatcher; |
| import com.google.gerrit.extensions.annotations.PluginName; |
| import com.google.gerrit.extensions.auth.oauth.OAuthServiceProvider; |
| import com.google.gerrit.extensions.auth.oauth.OAuthToken; |
| import com.google.gerrit.extensions.auth.oauth.OAuthUserInfo; |
| import com.google.gerrit.extensions.auth.oauth.OAuthVerifier; |
| import com.google.gerrit.server.config.CanonicalWebUrl; |
| import com.google.gerrit.server.config.PluginConfig; |
| import com.google.gerrit.server.config.PluginConfigFactory; |
| import com.google.gson.JsonElement; |
| import com.google.gson.JsonObject; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.ProvisionException; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.util.concurrent.ExecutionException; |
| import org.slf4j.Logger; |
| |
| @Singleton |
| public class GitLabOAuthService implements OAuthServiceProvider { |
| private static final Logger log = getLogger(GitLabOAuthService.class); |
| static final String CONFIG_SUFFIX = "-gitlab-oauth"; |
| private static final String PROTECTED_RESOURCE_URL = "%s/api/v3/user"; |
| private static final String GITLAB_PROVIDER_PREFIX = "gitlab-oauth:"; |
| private final OAuth20Service service; |
| private final String rootUrl; |
| |
| @Inject |
| GitLabOAuthService( |
| PluginConfigFactory cfgFactory, |
| @PluginName String pluginName, |
| @CanonicalWebUrl Provider<String> urlProvider) { |
| PluginConfig cfg = cfgFactory.getFromGerritConfig(pluginName + CONFIG_SUFFIX); |
| String canonicalWebUrl = CharMatcher.is('/').trimTrailingFrom(urlProvider.get()) + "/"; |
| rootUrl = cfg.getString(InitOAuth.ROOT_URL); |
| if (!URI.create(rootUrl).isAbsolute()) { |
| throw new ProvisionException("Root URL must be absolute URL"); |
| } |
| service = |
| new ServiceBuilder(cfg.getString(InitOAuth.CLIENT_ID)) |
| .apiSecret(cfg.getString(InitOAuth.CLIENT_SECRET)) |
| .callback(canonicalWebUrl + "oauth") |
| .build(new GitLabApi(rootUrl)); |
| } |
| |
| @Override |
| public OAuthUserInfo getUserInfo(OAuthToken token) throws IOException { |
| OAuthRequest request = |
| new OAuthRequest(Verb.GET, String.format(PROTECTED_RESOURCE_URL, rootUrl)); |
| OAuth2AccessToken t = new OAuth2AccessToken(token.getToken(), token.getRaw()); |
| service.signRequest(t, request); |
| |
| try (Response response = service.execute(request)) { |
| if (response.getCode() != SC_OK) { |
| throw new IOException( |
| String.format( |
| "Status %s (%s) for request %s", |
| response.getCode(), response.getBody(), request.getUrl())); |
| } |
| JsonElement userJson = JSON.newGson().fromJson(response.getBody(), JsonElement.class); |
| if (log.isDebugEnabled()) { |
| log.debug("User info response: {}", response.getBody()); |
| } |
| JsonObject jsonObject = userJson.getAsJsonObject(); |
| if (jsonObject == null || jsonObject.isJsonNull()) { |
| throw new IOException("Response doesn't contain 'user' field" + jsonObject); |
| } |
| JsonElement id = jsonObject.get("id"); |
| JsonElement username = jsonObject.get("username"); |
| JsonElement email = jsonObject.get("email"); |
| JsonElement name = jsonObject.get("name"); |
| return new OAuthUserInfo( |
| GITLAB_PROVIDER_PREFIX + id.getAsString(), |
| username == null || username.isJsonNull() ? null : username.getAsString(), |
| email == null || email.isJsonNull() ? null : email.getAsString(), |
| name == null || name.isJsonNull() ? null : name.getAsString(), |
| null); |
| } catch (ExecutionException | InterruptedException e) { |
| throw new RuntimeException("Cannot retrieve user info resource", e); |
| } |
| } |
| |
| @Override |
| public OAuthToken getAccessToken(OAuthVerifier rv) { |
| try { |
| OAuth2AccessToken accessToken = service.getAccessToken(rv.getValue()); |
| return new OAuthToken( |
| accessToken.getAccessToken(), accessToken.getTokenType(), accessToken.getRawResponse()); |
| } catch (InterruptedException | ExecutionException | IOException e) { |
| String msg = "Cannot retrieve access token"; |
| log.error(msg, e); |
| throw new RuntimeException(msg, e); |
| } |
| } |
| |
| @Override |
| public String getAuthorizationUrl() { |
| return service.getAuthorizationUrl(); |
| } |
| |
| @Override |
| public String getVersion() { |
| return service.getVersion(); |
| } |
| |
| @Override |
| public String getName() { |
| return "GitLab OAuth2"; |
| } |
| } |