Add support for Auth0 OAuth2/OIDC provider
https://auth0.com/docs/authenticate/protocols/oauth
Change-Id: I1549abda1e94fba82b2d81713ae37b8cdf264643
diff --git a/README.md b/README.md
index 606b565..df77b90 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@
* [Azure (previously named Office365)](https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-v2-protocols)
* [Phabricator](https://secure.phabricator.com/book/phabcontrib/article/using_oauthserver/)
* [Tuleap](https://docs.tuleap.org/user-guide/oauth2.html)
+* [Auth0](https://auth0.com/docs/authenticate/protocols/oauth)
See the [Wiki](https://github.com/davido/gerrit-oauth-provider/wiki) what it can do for you.
diff --git a/src/main/java/com/googlesource/gerrit/plugins/oauth/Auth0Api.java b/src/main/java/com/googlesource/gerrit/plugins/oauth/Auth0Api.java
new file mode 100644
index 0000000..a6888b5
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/oauth/Auth0Api.java
@@ -0,0 +1,38 @@
+// Copyright (C) 2023 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.github.scribejava.core.builder.api.DefaultApi20;
+
+public class Auth0Api extends DefaultApi20 {
+ private static final String AUTHORIZE_URL = "%s/authorize";
+ private static final String ACCESS_TOKEN_URL = "%s/oauth/token";
+
+ private final String rootUrl;
+
+ public Auth0Api(String rootUrl) {
+ this.rootUrl = rootUrl;
+ }
+
+ @Override
+ public String getAccessTokenEndpoint() {
+ return String.format(ACCESS_TOKEN_URL, rootUrl);
+ }
+
+ @Override
+ protected String getAuthorizationBaseUrl() {
+ return String.format(AUTHORIZE_URL, rootUrl);
+ }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/oauth/Auth0OAuthService.java b/src/main/java/com/googlesource/gerrit/plugins/oauth/Auth0OAuthService.java
new file mode 100644
index 0000000..065120f
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/oauth/Auth0OAuthService.java
@@ -0,0 +1,141 @@
+// Copyright (C) 2023 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.json.OutputFormat.JSON;
+
+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 java.io.IOException;
+import java.net.URI;
+import java.util.concurrent.ExecutionException;
+import javax.servlet.http.HttpServletResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Auth0OAuthService implements OAuthServiceProvider {
+ private static final Logger log = LoggerFactory.getLogger(Auth0OAuthService.class);
+ private static final String AUTH0_PROVIDER_PREFIX = "auth0-oauth:";
+ static final String CONFIG_SUFFIX = "-auth0-oauth";
+ private static final String PROTECTED_RESOURCE_URL = "%s/userinfo";
+ private final OAuth20Service service;
+ private final String serviceName;
+ private final String rootUrl;
+
+ @Inject
+ Auth0OAuthService(
+ 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");
+ }
+ serviceName = cfg.getString(InitOAuth.SERVICE_NAME, "Auth0");
+
+ service =
+ new ServiceBuilder(cfg.getString(InitOAuth.CLIENT_ID))
+ .apiSecret(cfg.getString(InitOAuth.CLIENT_SECRET))
+ .callback(canonicalWebUrl + "oauth")
+ .defaultScope("openid profile email")
+ .build(new Auth0Api(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() != HttpServletResponse.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("sub");
+ JsonElement username = jsonObject.get("preferred_username");
+ JsonElement email = jsonObject.get("email");
+ JsonElement name = jsonObject.get("name");
+ return new OAuthUserInfo(
+ AUTH0_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(),
+ id.getAsString());
+ } catch (ExecutionException | InterruptedException e) {
+ throw new RuntimeException("Cannot retrieve user info resource", e);
+ }
+ }
+
+ @Override
+ public OAuthToken getAccessToken(OAuthVerifier verifier) {
+ try {
+ OAuth2AccessToken accessToken = service.getAccessToken(verifier.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 serviceName;
+ }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/oauth/HttpModule.java b/src/main/java/com/googlesource/gerrit/plugins/oauth/HttpModule.java
index 45dea40..5b6a68a 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/oauth/HttpModule.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/oauth/HttpModule.java
@@ -144,5 +144,12 @@
.annotatedWith(Exports.named(TuleapOAuthService.CONFIG_SUFFIX))
.to(TuleapOAuthService.class);
}
+
+ cfg = cfgFactory.getFromGerritConfig(pluginName + Auth0OAuthService.CONFIG_SUFFIX);
+ if (cfg.getString(InitOAuth.CLIENT_ID) != null) {
+ bind(OAuthServiceProvider.class)
+ .annotatedWith(Exports.named(Auth0OAuthService.CONFIG_SUFFIX))
+ .to(Auth0OAuthService.class);
+ }
}
}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/oauth/InitOAuth.java b/src/main/java/com/googlesource/gerrit/plugins/oauth/InitOAuth.java
index 16e410f..101c1f1 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/oauth/InitOAuth.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/oauth/InitOAuth.java
@@ -55,6 +55,7 @@
private final Section airVantageOAuthProviderSection;
private final Section phabricatorOAuthProviderSection;
private final Section tuleapOAuthProviderSection;
+ private final Section auth0OAuthProviderSection;
@Inject
InitOAuth(ConsoleUI ui, Section.Factory sections, @PluginName String pluginName) {
@@ -87,6 +88,8 @@
sections.get(PLUGIN_SECTION, pluginName + PhabricatorOAuthService.CONFIG_SUFFIX);
this.tuleapOAuthProviderSection =
sections.get(PLUGIN_SECTION, pluginName + TuleapOAuthService.CONFIG_SUFFIX);
+ this.auth0OAuthProviderSection =
+ sections.get(PLUGIN_SECTION, pluginName + Auth0OAuthService.CONFIG_SUFFIX);
}
@Override
@@ -214,6 +217,13 @@
if (configureTuleapOAuthProvider && configureOAuth(tuleapOAuthProviderSection)) {
checkRootUrl(tuleapOAuthProviderSection.string("Tuleap Root URL", ROOT_URL, null));
}
+
+ boolean configureAuth0OAuthProvider =
+ ui.yesno(
+ isConfigured(auth0OAuthProviderSection), "Use Auth0 OAuth provider for Gerrit login ?");
+ if (configureAuth0OAuthProvider && configureOAuth(auth0OAuthProviderSection)) {
+ checkRootUrl(auth0OAuthProviderSection.string("Auth0 Root URL", ROOT_URL, null));
+ }
}
/**
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index fa66ba6..2059c18 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -76,6 +76,11 @@
root-url = "<root url>" # for example, https://tuleap.example.com
client-id = "<client-id>"
client-secret = "<client-secret>"
+
+ [plugin "@PLUGIN@-auth0-oauth"]
+ root-url = "<root url>" # for example, https://dev-abc.us.auth0.com
+ client-id = "<client-id>"
+ client-secret = "<client-secret>"
```
When one from the sections above is omitted, OAuth SSO is used.
diff --git a/src/test/java/com/googlesource/gerrit/plugins/oauth/Auth0ApiTest.java b/src/test/java/com/googlesource/gerrit/plugins/oauth/Auth0ApiTest.java
new file mode 100644
index 0000000..8e7eebc
--- /dev/null
+++ b/src/test/java/com/googlesource/gerrit/plugins/oauth/Auth0ApiTest.java
@@ -0,0 +1,35 @@
+// Copyright (C) 2023 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.common.truth.Truth.assertThat;
+
+import com.github.scribejava.core.extractors.OAuth2AccessTokenJsonExtractor;
+import org.junit.Before;
+import org.junit.Test;
+
+public class Auth0ApiTest {
+ private Auth0Api api;
+
+ @Before
+ public void setUp() {
+ api = new Auth0Api("https://dev-abc.us.auth0.com");
+ }
+
+ @Test
+ public void testAccessTokenExtractor() {
+ assertThat(api.getAccessTokenExtractor()).isInstanceOf(OAuth2AccessTokenJsonExtractor.class);
+ }
+}
