--- /dev/null
+/*******************************************************************************
+ * ============LICENSE_START==================================================
+ * * org.onap.dmaap
+ * * ===========================================================================
+ * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * * ===========================================================================
+ * * 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.
+ * * ============LICENSE_END====================================================
+ * *
+ * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * *
+ ******************************************************************************/
+
+package org.onap.dmaap.datarouter.subscriber;
+
+import org.apache.commons.codec.binary.Base64;
+import org.apache.log4j.Logger;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.*;
+import java.net.URLEncoder;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.PosixFilePermissions;
+
+import static org.onap.dmaap.datarouter.subscriber.Subscriber.props;
+
+public class SubscriberServlet extends HttpServlet {
+
+ private static Logger logger = Logger.getLogger("org.onap.dmaap.datarouter.subscriber.SubscriberServlet");
+ private String outputDirectory;
+ private String basicAuth;
+
+ /**
+ * Configure this subscriberservlet. Configuration parameters from config.getInitParameter() are:
+ * <ul>
+ * <li>Login - The login expected in the Authorization header (default "LOGIN").
+ * <li>Password - The password expected in the Authorization header (default "PASSWORD").
+ * <li>outputDirectory - The directory where files are placed (default "tmp").
+ * </ul>
+ */
+ @Override
+ public void init(ServletConfig config) {
+ String login = props.getProperty("org.onap.dmaap.datarouter.subscriber.auth.user", "LOGIN");
+ String password = props.getProperty("org.onap.dmaap.datarouter.subscriber.auth.password", "PASSWORD");
+ outputDirectory = props.getProperty("org.onap.dmaap.datarouter.subscriber.delivery.dir", "/tmp");
+ try {
+ Files.createDirectory(Paths.get(outputDirectory), PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxrwxrwx")));
+ } catch (IOException e) {
+ logger.info("SubServlet: Failed to create delivery dir: " + e.getMessage());
+ e.printStackTrace();
+ }
+ basicAuth = "Basic " + Base64.encodeBase64String((login + ":" + password).getBytes());
+ }
+
+ @Override
+ protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+ File filesPath = new File(outputDirectory);
+ File[] filesArr = filesPath.listFiles();
+ assert filesArr != null;
+ for (File file: filesArr) {
+ try (BufferedReader in = new BufferedReader(new FileReader(file))) {
+ String line = in.readLine();
+ while (line != null) {
+ line = in.readLine();
+ }
+ }
+ }
+ }
+ /**
+ * Invoke common(req, resp, false).
+ */
+ @Override
+ protected void doPut(HttpServletRequest req, HttpServletResponse resp) {
+ try {
+ common(req, resp, false);
+ } catch (IOException e) {
+ logger.info("SubServlet: Failed to doPut: " + req.getRemoteAddr() + " : " + req.getPathInfo(), e);
+ }
+ }
+ /**
+ * Invoke common(req, resp, true).
+ */
+ @Override
+ protected void doDelete(HttpServletRequest req, HttpServletResponse resp) {
+ try {
+ common(req, resp, true);
+ } catch (IOException e) {
+ logger.info("SubServlet: Failed to doDelete: " + req.getRemoteAddr() + " : " + req.getPathInfo(), e);
+ }
+ }
+ /**
+ * Process a PUT or DELETE request.
+ * <ol>
+ * <li>Verify that the request contains an Authorization header
+ * or else UNAUTHORIZED.
+ * <li>Verify that the Authorization header matches the configured
+ * Login and Password or else FORBIDDEN.
+ * <li>If the request is PUT, store the message body as a file
+ * in the configured outputDirectory directory protecting against
+ * evil characters in the received FileID. The file is created
+ * initially with its name prefixed with a ".", and once it is complete, it is
+ * renamed to remove the leading "." character.
+ * <li>If the request is DELETE, instead delete the file (if it exists) from the configured outputDirectory directory.
+ * <li>Respond with NO_CONTENT.
+ * </ol>
+ */
+ private void common(HttpServletRequest req, HttpServletResponse resp, boolean isdelete) throws IOException {
+ String authHeader = req.getHeader("Authorization");
+ if (authHeader == null) {
+ logger.info("Rejecting request with no Authorization header from " + req.getRemoteAddr() + ": " + req.getPathInfo());
+ resp.sendError(HttpServletResponse.SC_UNAUTHORIZED);
+ return;
+ }
+ if (!basicAuth.equals(authHeader)) {
+ logger.info("Rejecting request with incorrect Authorization header from " + req.getRemoteAddr() + ": " + req.getPathInfo());
+ resp.sendError(HttpServletResponse.SC_FORBIDDEN);
+ return;
+ }
+ String fileid = req.getPathInfo();
+ fileid = fileid.substring(fileid.lastIndexOf('/') + 1);
+ String queryString = req.getQueryString();
+ if (queryString != null) {
+ fileid = fileid + "?" + queryString;
+ }
+ String publishid = req.getHeader("X-ATT-DR-PUBLISH-ID");
+ String filename = URLEncoder.encode(fileid, "UTF-8").replaceAll("^\\.", "%2E").replaceAll("\\*", "%2A");
+ String fullPath = outputDirectory + "/" + filename;
+ String tmpPath = outputDirectory + "/." + filename;
+ try {
+ if (isdelete) {
+ Files.deleteIfExists(Paths.get(fullPath));
+ logger.info("Received delete for file id " + fileid + " from " + req.getRemoteAddr() + " publish id " + publishid + " as " + fullPath);
+ } else {
+ new File(tmpPath).createNewFile();
+ try (InputStream is = req.getInputStream(); OutputStream os = new FileOutputStream(tmpPath)) {
+ byte[] buf = new byte[65536];
+ int i;
+ while ((i = is.read(buf)) > 0) {
+ os.write(buf, 0, i);
+ }
+ }
+ Files.move(Paths.get(tmpPath), Paths.get(fullPath), StandardCopyOption.REPLACE_EXISTING);
+ logger.info("Received file id " + fileid + " from " + req.getRemoteAddr() + " publish id " + publishid + " as " + fullPath);
+ resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
+ }
+ resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
+ } catch (IOException ioe) {
+ Files.deleteIfExists(Paths.get(tmpPath));
+ logger.info("Failed to process file " + fullPath + " from " + req.getRemoteAddr() + ": " + req.getPathInfo());
+ throw ioe;
+ }
+ }
+}
Code Review / dmaap / datarouter.git / blobdiff