Add realm for api key

scm-webapp/src/main/java/sonia/scm/security/ApiKeyRealm.java

@@ -0,0 +1,67 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.security;
+
+import org.apache.shiro.authc.AuthenticationException;
+import org.apache.shiro.authc.AuthenticationInfo;
+import org.apache.shiro.authc.AuthenticationToken;
+import org.apache.shiro.authc.credential.AllowAllCredentialsMatcher;
+import org.apache.shiro.realm.AuthenticatingRealm;
+import sonia.scm.plugin.Extension;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import java.util.Optional;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+@Singleton
+@Extension
+public class ApiKeyRealm extends AuthenticatingRealm {
+
+  private final ApiKeyService apiKeyService;
+  private final DAORealmHelper helper;
+
+  @Inject
+  public ApiKeyRealm(ApiKeyService apiKeyService, DAORealmHelperFactory helperFactory) {
+    this.apiKeyService = apiKeyService;
+    this.helper = helperFactory.create("ApiTokenRealm");
+    setAuthenticationTokenClass(BearerToken.class);
+    setCredentialsMatcher(new AllowAllCredentialsMatcher());
+  }
+
+  @Override
+  protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) {
+    checkArgument(token instanceof BearerToken, "%s is required", BearerToken.class);
+    BearerToken bt = (BearerToken) token;
+    ApiKeyService.CheckResult check = apiKeyService.check(bt.getCredentials());
+    return helper
+      .authenticationInfoBuilder(check.getUser())
+      .withSessionId(bt.getPrincipal())
+//      .withScope()
+      .build();
+  }
+}