1 /*******************************************************************************
2 * ============LICENSE_START==================================================
4 * * ===========================================================================
5 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
6 * * ===========================================================================
7 * * Licensed under the Apache License, Version 2.0 (the "License");
8 * * you may not use this file except in compliance with the License.
9 * * You may obtain a copy of the License at
11 * * http://www.apache.org/licenses/LICENSE-2.0
13 * * Unless required by applicable law or agreed to in writing, software
14 * * distributed under the License is distributed on an "AS IS" BASIS,
15 * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * * See the License for the specific language governing permissions and
17 * * limitations under the License.
18 * * ============LICENSE_END====================================================
20 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
22 ******************************************************************************/
25 package org.onap.dmaap.datarouter.node;
27 import com.att.eelf.configuration.EELFLogger;
28 import com.att.eelf.configuration.EELFManager;
30 import java.io.FileOutputStream;
31 import java.io.FileWriter;
32 import java.io.IOException;
33 import java.io.InputStream;
34 import java.io.OutputStream;
35 import java.io.Writer;
36 import java.nio.file.Files;
37 import java.nio.file.Path;
38 import java.nio.file.Paths;
39 import java.util.Enumeration;
40 import java.util.regex.Pattern;
41 import javax.servlet.ServletException;
42 import javax.servlet.http.HttpServlet;
43 import javax.servlet.http.HttpServletRequest;
44 import javax.servlet.http.HttpServletResponse;
46 import org.apache.log4j.Logger;
47 import org.onap.dmaap.datarouter.node.eelf.EelfMsgs;
49 import static org.onap.dmaap.datarouter.node.NodeUtils.sendResponseError;
52 * Servlet for handling all http and https requests to the data router node
54 * Handled requests are:
56 * GET http://<i>node</i>/internal/fetchProv - fetch the provisioning data
58 * PUT/DELETE https://<i>node</i>/internal/publish/<i>fileid</i> - n2n transfer
60 * PUT/DELETE https://<i>node</i>/publish/<i>feedid</i>/<i>fileid</i> - publsh request
62 public class NodeServlet extends HttpServlet {
63 private static Logger logger = Logger.getLogger("org.onap.dmaap.datarouter.node.NodeServlet");
64 private static NodeConfigManager config;
65 private static Pattern MetaDataPattern;
66 //Adding EELF Logger Rally:US664892
67 private static EELFLogger eelflogger = EELFManager.getInstance()
68 .getLogger("org.onap.dmaap.datarouter.node.NodeServlet");
71 final String ws = "\\s*";
72 // assume that \\ and \" have been replaced by X
73 final String string = "\"[^\"]*\"";
74 //String string = "\"(?:[^\"\\\\]|\\\\.)*\"";
75 final String number = "[+-]?(?:\\.\\d+|(?:0|[1-9]\\d*)(?:\\.\\d*)?)(?:[eE][+-]?\\d+)?";
76 final String value = "(?:" + string + "|" + number + "|null|true|false)";
77 final String item = string + ws + ":" + ws + value + ws;
78 final String object = ws + "\\{" + ws + "(?:" + item + "(?:" + "," + ws + item + ")*)?\\}" + ws;
79 MetaDataPattern = Pattern.compile(object, Pattern.DOTALL);
83 * Get the NodeConfigurationManager
86 config = NodeConfigManager.getInstance();
87 logger.info("NODE0101 Node Servlet Configured");
90 private boolean down(HttpServletResponse resp) throws IOException {
91 if (config.isShutdown() || !config.isConfigured()) {
92 sendResponseError(resp, HttpServletResponse.SC_SERVICE_UNAVAILABLE, logger);
93 logger.info("NODE0102 Rejecting request: Service is being quiesced");
100 * Handle a GET for /internal/fetchProv
102 protected void doGet(HttpServletRequest req, HttpServletResponse resp){
103 NodeUtils.setIpAndFqdnForEelf("doGet");
104 eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader("X-ATT-DR-ON-BEHALF-OF"),
105 getIdFromPath(req) + "");
111 } catch (IOException ioe) {
112 logger.error("IOException" + ioe.getMessage());
114 String path = req.getPathInfo();
115 String qs = req.getQueryString();
116 String ip = req.getRemoteAddr();
118 path = path + "?" + qs;
120 if ("/internal/fetchProv".equals(path)) {
122 resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
124 } else if (path.startsWith("/internal/resetSubscription/")) {
125 String subid = path.substring(28);
126 if (subid.length() != 0 && subid.indexOf('/') == -1) {
127 NodeMain.resetQueue(subid, ip);
128 resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
133 logger.info("NODE0103 Rejecting invalid GET of " + path + " from " + ip);
134 sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, logger);
138 * Handle all PUT requests
140 protected void doPut(HttpServletRequest req, HttpServletResponse resp) {
141 NodeUtils.setIpAndFqdnForEelf("doPut");
142 eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader("X-ATT-DR-ON-BEHALF-OF"),
143 getIdFromPath(req) + "");
145 common(req, resp, true);
146 } catch(IOException ioe){
147 logger.error("IOException" + ioe.getMessage());
148 } catch(ServletException se){
149 logger.error("ServletException" + se.getMessage());
154 * Handle all DELETE requests
156 protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
157 NodeUtils.setIpAndFqdnForEelf("doDelete");
158 eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader("X-ATT-DR-ON-BEHALF-OF"),
159 getIdFromPath(req) + "");
161 common(req, resp, false);
162 } catch(IOException ioe){
163 logger.error("IOException" + ioe.getMessage());
164 } catch(ServletException se){
165 logger.error("ServletException" + se.getMessage());
169 private void common(HttpServletRequest req, HttpServletResponse resp, boolean isput)
170 throws ServletException, IOException {
174 if (!req.isSecure()) {
176 "NODE0104 Rejecting insecure PUT or DELETE of " + req.getPathInfo() + " from " + req.getRemoteAddr());
177 resp.sendError(HttpServletResponse.SC_FORBIDDEN, "https required on publish requests");
180 String fileid = req.getPathInfo();
181 if (fileid == null) {
182 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
184 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
185 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
188 String feedid = null;
190 String credentials = req.getHeader("Authorization");
191 if (credentials == null) {
192 logger.info("NODE0106 Rejecting unauthenticated PUT or DELETE of " + req.getPathInfo() + " from " + req
194 resp.sendError(HttpServletResponse.SC_FORBIDDEN, "Authorization header required");
197 String ip = req.getRemoteAddr();
198 String lip = req.getLocalAddr();
200 String xpubid = null;
201 String rcvd = NodeUtils.logts(System.currentTimeMillis()) + ";from=" + ip + ";by=" + lip;
202 Target[] targets = null;
203 if (fileid.startsWith("/publish/")) {
204 fileid = fileid.substring(9);
205 int i = fileid.indexOf('/');
206 if (i == -1 || i == fileid.length() - 1) {
207 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
209 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
210 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>. Possible missing fileid.");
213 feedid = fileid.substring(0, i);
214 fileid = fileid.substring(i + 1);
215 pubid = config.getPublishId();
216 xpubid = req.getHeader("X-ATT-DR-PUBLISH-ID");
217 targets = config.getTargets(feedid);
218 } else if (fileid.startsWith("/internal/publish/")) {
219 if (!config.isAnotherNode(credentials, ip)) {
220 logger.info("NODE0107 Rejecting unauthorized node-to-node transfer attempt from " + ip);
221 resp.sendError(HttpServletResponse.SC_FORBIDDEN);
224 fileid = fileid.substring(18);
225 pubid = req.getHeader("X-ATT-DR-PUBLISH-ID");
226 targets = config.parseRouting(req.getHeader("X-ATT-DR-ROUTING"));
228 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
230 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
231 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
234 if (fileid.indexOf('/') != -1) {
235 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
237 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
238 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
241 String qs = req.getQueryString();
243 fileid = fileid + "?" + qs;
245 String hp = config.getMyName();
246 int xp = config.getExtHttpsPort();
250 String logurl = "https://" + hp + "/internal/publish/" + fileid;
251 if (feedid != null) {
252 logurl = "https://" + hp + "/publish/" + feedid + "/" + fileid;
253 String reason = config.isPublishPermitted(feedid, credentials, ip);
254 if (reason != null) {
256 "NODE0111 Rejecting unauthorized publish attempt to feed " + feedid + " fileid " + fileid + " from "
257 + ip + " reason " + reason);
258 resp.sendError(HttpServletResponse.SC_FORBIDDEN, reason);
261 user = config.getAuthUser(feedid, credentials);
262 String newnode = config.getIngressNode(feedid, user, ip);
263 if (newnode != null) {
265 int iport = config.getExtHttpsPort();
269 String redirto = "https://" + newnode + port + "/publish/" + feedid + "/" + fileid;
271 "NODE0108 Redirecting publish attempt for feed " + feedid + " user " + user + " ip " + ip + " to "
273 resp.sendRedirect(redirto);
276 resp.setHeader("X-ATT-DR-PUBLISH-ID", pubid);
278 String fbase = config.getSpoolDir() + "/" + pubid;
279 File data = new File(fbase);
280 File meta = new File(fbase + ".M");
281 OutputStream dos = null;
282 InputStream is = null;
283 try (Writer mw = new FileWriter(meta)){
284 StringBuffer mx = new StringBuffer();
285 mx.append(req.getMethod()).append('\t').append(fileid).append('\n');
286 Enumeration hnames = req.getHeaderNames();
288 while (hnames.hasMoreElements()) {
289 String hn = (String) hnames.nextElement();
290 String hnlc = hn.toLowerCase();
291 if ((isput && ("content-type".equals(hnlc) ||
292 "content-language".equals(hnlc) ||
293 "content-md5".equals(hnlc) ||
294 "content-range".equals(hnlc))) ||
295 "x-att-dr-meta".equals(hnlc) ||
296 (feedid == null && "x-att-dr-received".equals(hnlc)) ||
297 (hnlc.startsWith("x-") && !hnlc.startsWith("x-att-dr-"))) {
298 Enumeration hvals = req.getHeaders(hn);
299 while (hvals.hasMoreElements()) {
300 String hv = (String) hvals.nextElement();
301 if ("content-type".equals(hnlc)) {
304 if ("x-att-dr-meta".equals(hnlc)) {
305 if (hv.length() > 4096) {
307 "NODE0109 Rejecting publish attempt with metadata too long for feed " + feedid
308 + " user " + user + " ip " + ip);
309 resp.sendError(HttpServletResponse.SC_BAD_REQUEST, "Metadata too long");
312 if (!MetaDataPattern.matcher(hv.replaceAll("\\\\.", "X")).matches()) {
314 "NODE0109 Rejecting publish attempt with malformed metadata for feed " + feedid
315 + " user " + user + " ip " + ip);
316 resp.sendError(HttpServletResponse.SC_BAD_REQUEST, "Malformed metadata");
320 mx.append(hn).append('\t').append(hv).append('\n');
324 mx.append("X-ATT-DR-RECEIVED\t").append(rcvd).append('\n');
325 String metadata = mx.toString();
326 byte[] buf = new byte[1024 * 1024];
329 is = req.getInputStream();
330 dos = new FileOutputStream(data);
331 while ((i = is.read(buf)) > 0) {
332 dos.write(buf, 0, i);
338 } catch (IOException ioe) {
341 exlen = Long.parseLong(req.getHeader("Content-Length"));
342 } catch (Exception e) {
344 StatusLog.logPubFail(pubid, feedid, logurl, req.getMethod(), ctype, exlen, data.length(), ip, user,
348 Path dpath = Paths.get(fbase);
349 for (Target t : targets) {
350 DestInfo di = t.getDestInfo();
352 // TODO: unknown destination
355 String dbase = di.getSpool() + "/" + pubid;
356 Files.createLink(Paths.get(dbase), dpath);
358 if (di.getSubId() == null) {
359 mw.write("X-ATT-DR-ROUTING\t" + t.getRouting() + "\n");
361 meta.renameTo(new File(dbase + ".M"));
363 resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
364 resp.getOutputStream().close();
365 StatusLog.logPub(pubid, feedid, logurl, req.getMethod(), ctype, data.length(), ip, user,
366 HttpServletResponse.SC_NO_CONTENT);
367 } catch (IOException ioe) {
369 "NODE0110 IO Exception receiving publish attempt for feed " + feedid + " user " + user + " ip " + ip
370 + " " + ioe.toString(), ioe);
376 } catch (Exception e) {
382 } catch (Exception e) {
387 } catch (Exception e) {
391 } catch (Exception e) {
396 private int getIdFromPath(HttpServletRequest req) {
397 String path = req.getPathInfo();
398 if (path == null || path.length() < 2) {
402 return Integer.parseInt(path.substring(1));
403 } catch (NumberFormatException e) {