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161 changes: 161 additions & 0 deletions
161
src/main/java/com/googlesource/gerrit/plugins/oauth/GitLabApi.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,161 @@ | ||
| // 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 org.scribe.builder.api.DefaultApi20; | ||
| import org.scribe.exceptions.OAuthException; | ||
| import org.scribe.extractors.AccessTokenExtractor; | ||
| import org.scribe.model.*; | ||
| import org.scribe.oauth.OAuthService; | ||
|
|
||
| import org.scribe.utils.Preconditions; | ||
|
|
||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
|
|
||
| import static java.lang.String.format; | ||
|
|
||
| public class GitLabApi extends DefaultApi20 { | ||
| private static final String AUTHORIZE_URL = | ||
| "%s/oauth/authorize?client_id=%s&response_type=code&redirect_uri=%s"; | ||
|
|
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| private final String rootUrl; | ||
|
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| public GitLabApi(String rootUrl) { | ||
| this.rootUrl = rootUrl; | ||
| } | ||
|
|
||
| @Override | ||
| public String getAuthorizationUrl(OAuthConfig config) { | ||
| return String.format(AUTHORIZE_URL, rootUrl, config.getApiKey(), | ||
| config.getCallback()); | ||
| } | ||
|
|
||
| @Override | ||
| public String getAccessTokenEndpoint() { | ||
| return String.format("%s/oauth/token", rootUrl); | ||
| } | ||
|
|
||
| @Override | ||
| public Verb getAccessTokenVerb() { | ||
| return Verb.POST; | ||
| } | ||
|
|
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| @Override | ||
| public OAuthService createService(OAuthConfig config) { | ||
| return new GitLabOAuthService(this, config); | ||
| } | ||
|
|
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| @Override | ||
| public AccessTokenExtractor getAccessTokenExtractor() { | ||
| return new GitLabJsonTokenExtractor(); | ||
| } | ||
|
|
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| private static final class GitLabOAuthService implements OAuthService { | ||
| private static final String VERSION = "2.0"; | ||
|
|
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| private static final String GRANT_TYPE = "grant_type"; | ||
| private static final String GRANT_TYPE_VALUE = "authorization_code"; | ||
|
|
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| private final DefaultApi20 api; | ||
| private final OAuthConfig config; | ||
|
|
||
| /** | ||
| * Default constructor | ||
| * | ||
| * @param api OAuth2.0 api information | ||
| * @param config OAuth 2.0 configuration param object | ||
| */ | ||
| public GitLabOAuthService(DefaultApi20 api, OAuthConfig config) { | ||
| this.api = api; | ||
| this.config = config; | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritDoc} | ||
| */ | ||
| @Override | ||
| public Token getAccessToken(Token requestToken, Verifier verifier) { | ||
| OAuthRequest request = | ||
| new OAuthRequest(api.getAccessTokenVerb(), | ||
| api.getAccessTokenEndpoint()); | ||
| request.addBodyParameter(OAuthConstants.CLIENT_ID, config.getApiKey()); | ||
| request.addBodyParameter(OAuthConstants.CLIENT_SECRET, | ||
| config.getApiSecret()); | ||
| request.addBodyParameter(OAuthConstants.CODE, verifier.getValue()); | ||
| request.addBodyParameter(OAuthConstants.REDIRECT_URI, | ||
| config.getCallback()); | ||
| if (config.hasScope()) { | ||
| request.addBodyParameter(OAuthConstants.SCOPE, config.getScope()); | ||
| } | ||
| request.addBodyParameter(GRANT_TYPE, GRANT_TYPE_VALUE); | ||
| Response response = request.send(); | ||
| return api.getAccessTokenExtractor().extract(response.getBody()); | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritDoc} | ||
| */ | ||
| @Override | ||
| public Token getRequestToken() { | ||
| throw new UnsupportedOperationException( | ||
| "Unsupported operation, please use 'getAuthorizationUrl' and redirect your users there"); | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritDoc} | ||
| */ | ||
| @Override | ||
| public String getVersion() { | ||
| return VERSION; | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritDoc} | ||
| */ | ||
| @Override | ||
| public void signRequest(Token accessToken, OAuthRequest request) { | ||
| request.addQuerystringParameter(OAuthConstants.ACCESS_TOKEN, | ||
| accessToken.getToken()); | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritDoc} | ||
| */ | ||
| @Override | ||
| public String getAuthorizationUrl(Token requestToken) { | ||
| return api.getAuthorizationUrl(config); | ||
| } | ||
| } | ||
|
|
||
| private static final class GitLabJsonTokenExtractor implements | ||
| AccessTokenExtractor { | ||
| private Pattern accessTokenPattern = Pattern | ||
| .compile("\"access_token\"\\s*:\\s*\"(\\S*?)\""); | ||
|
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| @Override | ||
| public Token extract(String response) { | ||
| Preconditions.checkEmptyString(response, | ||
| "Cannot extract a token from a null or empty String"); | ||
| Matcher matcher = accessTokenPattern.matcher(response); | ||
| if (matcher.find()) { | ||
| return new Token(matcher.group(1), "", response); | ||
| } else { | ||
| throw new OAuthException( | ||
| "Cannot extract an acces token. Response was: " + response); | ||
| } | ||
| } | ||
| } | ||
| } |
130 changes: 130 additions & 0 deletions
130
src/main/java/com/googlesource/gerrit/plugins/oauth/GitLabOAuthService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| // 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 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.Singleton; | ||
| import org.scribe.builder.ServiceBuilder; | ||
| import org.scribe.model.OAuthRequest; | ||
| import org.scribe.model.Response; | ||
| import org.scribe.model.Token; | ||
| import org.scribe.model.Verb; | ||
| import org.scribe.model.Verifier; | ||
| import org.scribe.oauth.OAuthService; | ||
| import org.slf4j.Logger; | ||
|
|
||
| import java.io.IOException; | ||
|
|
||
| import static com.google.gerrit.server.OutputFormat.JSON; | ||
| import static javax.servlet.http.HttpServletResponse.SC_OK; | ||
| import static org.slf4j.LoggerFactory.getLogger; | ||
|
|
||
| @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 OAuthService 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); | ||
| service = new ServiceBuilder().provider(new GitLabApi(rootUrl)) | ||
| .apiKey(cfg.getString(InitOAuth.CLIENT_ID)) | ||
| .apiSecret(cfg.getString(InitOAuth.CLIENT_SECRET)) | ||
| .callback(canonicalWebUrl + "oauth") | ||
| .build(); | ||
| } | ||
|
|
||
| @Override | ||
| public OAuthUserInfo getUserInfo(OAuthToken token) throws IOException { | ||
| final String protectedResourceUrl = | ||
| String.format(PROTECTED_RESOURCE_URL, rootUrl); | ||
| OAuthRequest request = new OAuthRequest(Verb.GET, protectedResourceUrl); | ||
| Token t = | ||
| new Token(token.getToken(), token.getSecret(), token.getRaw()); | ||
| service.signRequest(t, request); | ||
|
|
||
| Response response = request.send(); | ||
| 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); | ||
| } | ||
|
|
||
| @Override | ||
| public OAuthToken getAccessToken(OAuthVerifier rv) { | ||
| Verifier vi = new Verifier(rv.getValue()); | ||
| Token to = service.getAccessToken(null, vi); | ||
| return new OAuthToken(to.getToken(), to.getSecret(), null); | ||
| } | ||
|
|
||
| @Override | ||
| public String getAuthorizationUrl() { | ||
| return service.getAuthorizationUrl(null); | ||
| } | ||
|
|
||
| @Override | ||
| public String getVersion() { | ||
| return service.getVersion(); | ||
| } | ||
|
|
||
| @Override | ||
| public String getName() { | ||
| return "GitLab OAuth2"; | ||
| } | ||
| } |
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