Merge pull request #3749 from Abyss777/media_access

Provide web access to media files received from devices

1 files changed, 90 insertions, 0 deletions

diff --git a/src/org/traccar/api/MediaFilter.java b/src/org/traccar/api/MediaFilter.java
new file mode 100644
index 000000000..4685ce05b
--- /dev/null
+++ b/src/org/traccar/api/MediaFilter.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2018 Anton Tananaev (anton@traccar.org)
+ * Copyright 2018 Andrey Kunitsyn (andrey@traccar.org)
+ *
+ * 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 org.traccar.api;
+
+import java.io.IOException;
+import java.sql.SQLException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+
+import org.traccar.Context;
+import org.traccar.api.resource.SessionResource;
+import org.traccar.helper.Log;
+import org.traccar.model.Device;
+
+public class MediaFilter implements Filter {
+
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+    }
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
+            throws IOException, ServletException {
+        HttpServletResponse httpResponse = ((HttpServletResponse) response);
+        try {
+            HttpSession session = ((HttpServletRequest) request).getSession(false);
+            Long userId = null;
+            if (session != null) {
+                userId = (Long) session.getAttribute(SessionResource.USER_ID_KEY);
+                if (userId != null) {
+                    Context.getPermissionsManager().checkUserEnabled(userId);
+                    Context.getStatisticsManager().registerRequest(userId);
+                }
+            }
+            if (userId == null) {
+                httpResponse.sendError(HttpServletResponse.SC_UNAUTHORIZED);
+                return;
+            }
+
+            String path = ((HttpServletRequest) request).getPathInfo();
+            String[] parts = path.split("/");
+            if (parts.length < 2 || parts.length == 2 && !path.endsWith("/")) {
+                Context.getPermissionsManager().checkAdmin(userId);
+            } else {
+                Device device = Context.getDeviceManager().getByUniqueId(parts[1]);
+                if (device != null) {
+                    Context.getPermissionsManager().checkDevice(userId, device.getId());
+                } else {
+                    httpResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
+                    return;
+                }
+            }
+
+            chain.doFilter(request, response);
+        } catch (SecurityException e) {
+            httpResponse.setStatus(HttpServletResponse.SC_FORBIDDEN);
+            httpResponse.getWriter().println(Log.exceptionStack(e));
+        } catch (SQLException e) {
+            httpResponse.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+            httpResponse.getWriter().println(Log.exceptionStack(e));
+        }
+    }
+
+    @Override
+    public void destroy() {
+    }
+
+}