added permission check for git

scm-web-api/src/main/java/sonia/scm/web/filter/PermissionFilter.java

@@ -0,0 +1,180 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.web.filter;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.inject.Provider;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sonia.scm.repository.PermissionUtil;
+import sonia.scm.repository.Repository;
+import sonia.scm.user.User;
+import sonia.scm.util.AssertUtil;
+import sonia.scm.web.security.SecurityContext;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.IOException;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public abstract class PermissionFilter extends HttpFilter
+{
+
+  /** the logger for PermissionFilter */
+  private static final Logger logger =
+    LoggerFactory.getLogger(PermissionFilter.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param securityContextProvider
+   */
+  public PermissionFilter(Provider<SecurityContext> securityContextProvider)
+  {
+    this.securityContextProvider = securityContextProvider;
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param request
+   *
+   * @return
+   */
+  protected abstract Repository getRepository(HttpServletRequest request);
+
+  /**
+   * Method description
+   *
+   *
+   * @param request
+   *
+   * @return
+   */
+  protected abstract boolean isWriteRequest(HttpServletRequest request);
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param request
+   * @param response
+   * @param chain
+   *
+   * @throws IOException
+   * @throws ServletException
+   */
+  @Override
+  protected void doFilter(HttpServletRequest request,
+                          HttpServletResponse response, FilterChain chain)
+          throws IOException, ServletException
+  {
+    SecurityContext securityContext = securityContextProvider.get();
+
+    AssertUtil.assertIsNotNull(securityContext);
+
+    User user = securityContext.getUser();
+
+    if (user != null)
+    {
+      Repository repository = getRepository(request);
+
+      if (repository != null)
+      {
+        boolean writeRequest = isWriteRequest(request);
+
+        if (PermissionUtil.hasPermission(repository, securityContext.getUser(),
+                                         writeRequest))
+        {
+          chain.doFilter(request, response);
+        }
+        else
+        {
+          if (logger.isInfoEnabled())
+          {
+            logger.info("{} access to repostitory {} for user {} denied",
+                        new Object[] { writeRequest
+                                       ? "write"
+                                       : "read", repository.getName(),
+                                       user.getName() });
+          }
+
+          response.sendError(HttpServletResponse.SC_FORBIDDEN);
+        }
+      }
+      else
+      {
+        if (logger.isDebugEnabled())
+        {
+          logger.debug("repository not found");
+        }
+
+        response.sendError(HttpServletResponse.SC_NOT_FOUND);
+      }
+    }
+    else
+    {
+      if (logger.isDebugEnabled())
+      {
+        logger.debug("user in not authenticated");
+      }
+
+      response.sendError(HttpServletResponse.SC_FORBIDDEN);
+    }
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  protected Provider<SecurityContext> securityContextProvider;
+}