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 static org.onap.dmaap.datarouter.node.NodeUtils.sendResponseError;
29 import com.att.eelf.configuration.EELFLogger;
30 import com.att.eelf.configuration.EELFManager;
32 import java.io.FileOutputStream;
33 import java.io.FileWriter;
34 import java.io.IOException;
35 import java.io.InputStream;
36 import java.io.OutputStream;
37 import java.io.Writer;
38 import java.nio.file.Files;
39 import java.nio.file.Path;
40 import java.nio.file.Paths;
41 import java.util.Enumeration;
42 import java.util.regex.Pattern;
43 import javax.servlet.ServletException;
44 import javax.servlet.http.HttpServlet;
45 import javax.servlet.http.HttpServletRequest;
46 import javax.servlet.http.HttpServletResponse;
47 import org.apache.log4j.Logger;
48 import org.onap.dmaap.datarouter.node.eelf.EelfMsgs;
51 * Servlet for handling all http and https requests to the data router node
53 * Handled requests are:
55 * GET http://<i>node</i>/internal/fetchProv - fetch the provisioning data
57 * PUT/DELETE https://<i>node</i>/internal/publish/<i>fileid</i> - n2n transfer
59 * PUT/DELETE https://<i>node</i>/publish/<i>feedid</i>/<i>fileid</i> - publsh request
61 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
178 resp.sendError(HttpServletResponse.SC_FORBIDDEN, "https required on publish requests");
181 String fileid = req.getPathInfo();
182 if (fileid == null) {
183 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
185 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
186 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
189 String feedid = null;
191 String credentials = req.getHeader("Authorization");
192 if (credentials == null) {
193 logger.info("NODE0106 Rejecting unauthenticated PUT or DELETE of " + req.getPathInfo() + " from " + req
195 resp.sendError(HttpServletResponse.SC_FORBIDDEN, "Authorization header required");
198 String ip = req.getRemoteAddr();
199 String lip = req.getLocalAddr();
201 String xpubid = null;
202 String rcvd = NodeUtils.logts(System.currentTimeMillis()) + ";from=" + ip + ";by=" + lip;
203 Target[] targets = null;
204 if (fileid.startsWith("/publish/")) {
205 fileid = fileid.substring(9);
206 int i = fileid.indexOf('/');
207 if (i == -1 || i == fileid.length() - 1) {
208 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
210 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
211 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>. Possible missing fileid.");
214 feedid = fileid.substring(0, i);
215 fileid = fileid.substring(i + 1);
216 pubid = config.getPublishId();
217 xpubid = req.getHeader("X-ATT-DR-PUBLISH-ID");
218 targets = config.getTargets(feedid);
219 } else if (fileid.startsWith("/internal/publish/")) {
220 if (!config.isAnotherNode(credentials, ip)) {
221 logger.info("NODE0107 Rejecting unauthorized node-to-node transfer attempt from " + ip);
222 resp.sendError(HttpServletResponse.SC_FORBIDDEN);
225 fileid = fileid.substring(18);
226 pubid = req.getHeader("X-ATT-DR-PUBLISH-ID");
227 targets = config.parseRouting(req.getHeader("X-ATT-DR-ROUTING"));
229 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
231 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
232 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
235 if (fileid.indexOf('/') != -1) {
236 logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req
238 resp.sendError(HttpServletResponse.SC_NOT_FOUND,
239 "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
242 String qs = req.getQueryString();
244 fileid = fileid + "?" + qs;
246 String hp = config.getMyName();
247 int xp = config.getExtHttpsPort();
251 String logurl = "https://" + hp + "/internal/publish/" + fileid;
252 if (feedid != null) {
253 logurl = "https://" + hp + "/publish/" + feedid + "/" + fileid;
254 String reason = config.isPublishPermitted(feedid, credentials, ip);
255 if (reason != null) {
257 "NODE0111 Rejecting unauthorized publish attempt to feed " + feedid + " fileid " + fileid
259 + ip + " reason " + reason);
260 resp.sendError(HttpServletResponse.SC_FORBIDDEN, reason);
263 user = config.getAuthUser(feedid, credentials);
264 String newnode = config.getIngressNode(feedid, user, ip);
265 if (newnode != null) {
267 int iport = config.getExtHttpsPort();
271 String redirto = "https://" + newnode + port + "/publish/" + feedid + "/" + fileid;
273 "NODE0108 Redirecting publish attempt for feed " + feedid + " user " + user + " ip " + ip
276 resp.sendRedirect(redirto);
279 resp.setHeader("X-ATT-DR-PUBLISH-ID", pubid);
281 String fbase = config.getSpoolDir() + "/" + pubid;
282 File data = new File(fbase);
283 File meta = new File(fbase + ".M");
284 OutputStream dos = null;
285 InputStream is = null;
286 try (Writer mw = new FileWriter(meta)) {
287 StringBuffer mx = new StringBuffer();
288 mx.append(req.getMethod()).append('\t').append(fileid).append('\n');
289 Enumeration hnames = req.getHeaderNames();
291 while (hnames.hasMoreElements()) {
292 String hn = (String) hnames.nextElement();
293 String hnlc = hn.toLowerCase();
294 if ((isput && ("content-type".equals(hnlc) ||
295 "content-language".equals(hnlc) ||
296 "content-md5".equals(hnlc) ||
297 "content-range".equals(hnlc))) ||
298 "x-att-dr-meta".equals(hnlc) ||
299 (feedid == null && "x-att-dr-received".equals(hnlc)) ||
300 (hnlc.startsWith("x-") && !hnlc.startsWith("x-att-dr-"))) {
301 Enumeration hvals = req.getHeaders(hn);
302 while (hvals.hasMoreElements()) {
303 String hv = (String) hvals.nextElement();
304 if ("content-type".equals(hnlc)) {
307 if ("x-att-dr-meta".equals(hnlc)) {
308 if (hv.length() > 4096) {
310 "NODE0109 Rejecting publish attempt with metadata too long for feed " + feedid
311 + " user " + user + " ip " + ip);
312 resp.sendError(HttpServletResponse.SC_BAD_REQUEST, "Metadata too long");
315 if (!MetaDataPattern.matcher(hv.replaceAll("\\\\.", "X")).matches()) {
317 "NODE0109 Rejecting publish attempt with malformed metadata for feed " + feedid
318 + " user " + user + " ip " + ip);
319 resp.sendError(HttpServletResponse.SC_BAD_REQUEST, "Malformed metadata");
323 mx.append(hn).append('\t').append(hv).append('\n');
327 mx.append("X-ATT-DR-RECEIVED\t").append(rcvd).append('\n');
328 String metadata = mx.toString();
329 byte[] buf = new byte[1024 * 1024];
332 is = req.getInputStream();
333 dos = new FileOutputStream(data);
334 while ((i = is.read(buf)) > 0) {
335 dos.write(buf, 0, i);
341 } catch (IOException ioe) {
344 exlen = Long.parseLong(req.getHeader("Content-Length"));
345 } catch (Exception e) {
347 StatusLog.logPubFail(pubid, feedid, logurl, req.getMethod(), ctype, exlen, data.length(), ip, user,
351 Path dpath = Paths.get(fbase);
352 for (Target t : targets) {
353 DestInfo di = t.getDestInfo();
355 // TODO: unknown destination
358 String dbase = di.getSpool() + "/" + pubid;
359 Files.createLink(Paths.get(dbase), dpath);
361 if (di.getSubId() == null) {
362 mw.write("X-ATT-DR-ROUTING\t" + t.getRouting() + "\n");
364 meta.renameTo(new File(dbase + ".M"));
366 resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
367 resp.getOutputStream().close();
368 StatusLog.logPub(pubid, feedid, logurl, req.getMethod(), ctype, data.length(), ip, user,
369 HttpServletResponse.SC_NO_CONTENT);
370 } catch (IOException ioe) {
372 "NODE0110 IO Exception receiving publish attempt for feed " + feedid + " user " + user + " ip " + ip
373 + " " + ioe.toString(), ioe);
379 } catch (Exception e) {
385 } catch (Exception e) {
390 } catch (Exception e) {
394 } catch (Exception e) {
399 private int getIdFromPath(HttpServletRequest req) {
400 String path = req.getPathInfo();
401 if (path == null || path.length() < 2) {
405 return Integer.parseInt(path.substring(1));
406 } catch (NumberFormatException e) {