diff options
Diffstat (limited to 'datarouter-node/src/main/java/com/att/research/datarouter/node/NodeServlet.java')
| -rw-r--r-- | datarouter-node/src/main/java/com/att/research/datarouter/node/NodeServlet.java | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/datarouter-node/src/main/java/com/att/research/datarouter/node/NodeServlet.java b/datarouter-node/src/main/java/com/att/research/datarouter/node/NodeServlet.java new file mode 100644 index 00000000..e0ec1f5b --- /dev/null +++ b/datarouter-node/src/main/java/com/att/research/datarouter/node/NodeServlet.java @@ -0,0 +1,380 @@ +/*******************************************************************************
+ * ============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 com.att.research.datarouter.node;
+
+import javax.servlet.*;
+import javax.servlet.http.*;
+import java.util.*;
+import java.util.regex.*;
+import java.io.*;
+import java.nio.file.*;
+import org.apache.log4j.Logger;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.att.research.datarouter.node.eelf.EelfMsgs;
+
+import java.net.*;
+
+/**
+ * Servlet for handling all http and https requests to the data router node
+ * <p>
+ * Handled requests are:
+ * <br>
+ * GET http://<i>node</i>/internal/fetchProv - fetch the provisioning data
+ * <br>
+ * PUT/DELETE https://<i>node</i>/internal/publish/<i>fileid</i> - n2n transfer
+ * <br>
+ * PUT/DELETE https://<i>node</i>/publish/<i>feedid</i>/<i>fileid</i> - publsh request
+ */
+public class NodeServlet extends HttpServlet {
+ private static Logger logger = Logger.getLogger("com.att.research.datarouter.node.NodeServlet");
+ private static NodeConfigManager config;
+ private static Pattern MetaDataPattern;
+ private static SubnetMatcher internalsubnet = new SubnetMatcher("135.207.136.128/25");
+ //Adding EELF Logger Rally:US664892
+ private static EELFLogger eelflogger = EELFManager.getInstance().getLogger("com.att.research.datarouter.node.NodeServlet");
+
+ static {
+ try {
+ String ws = "\\s*";
+ // assume that \\ and \" have been replaced by X
+ String string = "\"[^\"]*\"";
+ //String string = "\"(?:[^\"\\\\]|\\\\.)*\"";
+ String number = "[+-]?(?:\\.\\d+|(?:0|[1-9]\\d*)(?:\\.\\d*)?)(?:[eE][+-]?\\d+)?";
+ String value = "(?:" + string + "|" + number + "|null|true|false)";
+ String item = string + ws + ":" + ws + value + ws;
+ String object = ws + "\\{" + ws + "(?:" + item + "(?:" + "," + ws + item + ")*)?\\}" + ws;
+ MetaDataPattern = Pattern.compile(object, Pattern.DOTALL);
+ } catch (Exception e) {
+ }
+ }
+ /**
+ * Get the NodeConfigurationManager
+ */
+ public void init() {
+ config = NodeConfigManager.getInstance();
+ logger.info("NODE0101 Node Servlet Configured");
+ }
+ private boolean down(HttpServletResponse resp) throws IOException {
+ if (config.isShutdown() || !config.isConfigured()) {
+ resp.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
+ logger.info("NODE0102 Rejecting request: Service is being quiesced");
+ return(true);
+ }
+ return(false);
+ }
+ /**
+ * Handle a GET for /internal/fetchProv
+ */
+ protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ NodeUtils.setIpAndFqdnForEelf("doGet");
+ eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader("X-ATT-DR-ON-BEHALF-OF"),getIdFromPath(req)+"");
+ if (down(resp)) {
+ return;
+ }
+ String path = req.getPathInfo();
+ String qs = req.getQueryString();
+ String ip = req.getRemoteAddr();
+ if (qs != null) {
+ path = path + "?" + qs;
+ }
+ if ("/internal/fetchProv".equals(path)) {
+ config.gofetch(ip);
+ resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
+ return;
+ } else if (path.startsWith("/internal/resetSubscription/")) {
+ String subid = path.substring(28);
+ if (subid.length() != 0 && subid.indexOf('/') == -1) {
+ NodeMain.resetQueue(subid, ip);
+ resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
+ return;
+ }
+ }
+ if (internalsubnet.matches(NodeUtils.getInetAddress(ip))) {
+ if (path.startsWith("/internal/logs/")) {
+ String f = path.substring(15);
+ File fn = new File(config.getLogDir() + "/" + f);
+ if (f.indexOf('/') != -1 || !fn.isFile()) {
+ logger.info("NODE0103 Rejecting invalid GET of " + path + " from " + ip);
+ resp.sendError(HttpServletResponse.SC_NOT_FOUND);
+ return;
+ }
+ byte[] buf = new byte[65536];
+ resp.setContentType("text/plain");
+ resp.setContentLength((int)fn.length());
+ resp.setStatus(200);
+ InputStream is = new FileInputStream(fn);
+ OutputStream os = resp.getOutputStream();
+ int i;
+ while ((i = is.read(buf)) > 0) {
+ os.write(buf, 0, i);
+ }
+ is.close();
+ return;
+ }
+ if (path.startsWith("/internal/rtt/")) {
+ String xip = path.substring(14);
+ long st = System.currentTimeMillis();
+ String status = " unknown";
+ try {
+ Socket s = new Socket(xip, 443);
+ s.close();
+ status = " connected";
+ } catch (Exception e) {
+ status = " error " + e.toString();
+ }
+ long dur = System.currentTimeMillis() - st;
+ resp.setContentType("text/plain");
+ resp.setStatus(200);
+ byte[] buf = (dur + status + "\n").getBytes();
+ resp.setContentLength(buf.length);
+ resp.getOutputStream().write(buf);
+ return;
+ }
+ }
+ logger.info("NODE0103 Rejecting invalid GET of " + path + " from " + ip);
+ resp.sendError(HttpServletResponse.SC_NOT_FOUND);
+ return;
+ }
+ /**
+ * Handle all PUT requests
+ */
+ protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ NodeUtils.setIpAndFqdnForEelf("doPut");
+ eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader("X-ATT-DR-ON-BEHALF-OF"),getIdFromPath(req)+"");
+ common(req, resp, true);
+ }
+ /**
+ * Handle all DELETE requests
+ */
+ protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ NodeUtils.setIpAndFqdnForEelf("doDelete");
+ eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader("X-ATT-DR-ON-BEHALF-OF"),getIdFromPath(req)+"");
+ common(req, resp, false);
+ }
+ private void common(HttpServletRequest req, HttpServletResponse resp, boolean isput) throws ServletException, IOException {
+ if (down(resp)) {
+ return;
+ }
+ if (!req.isSecure()) {
+ logger.info("NODE0104 Rejecting insecure PUT or DELETE of " + req.getPathInfo() + " from " + req.getRemoteAddr());
+ resp.sendError(HttpServletResponse.SC_FORBIDDEN, "https required on publish requests");
+ return;
+ }
+ String fileid = req.getPathInfo();
+ if (fileid == null) {
+ logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req.getRemoteAddr());
+ resp.sendError(HttpServletResponse.SC_NOT_FOUND, "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
+ return;
+ }
+ String feedid = null;
+ String user = null;
+ String credentials = req.getHeader("Authorization");
+ if (credentials == null) {
+ logger.info("NODE0106 Rejecting unauthenticated PUT or DELETE of " + req.getPathInfo() + " from " + req.getRemoteAddr());
+ resp.sendError(HttpServletResponse.SC_FORBIDDEN, "Authorization header required");
+ return;
+ }
+ String ip = req.getRemoteAddr();
+ String lip = req.getLocalAddr();
+ String pubid = null;
+ String xpubid = null;
+ String rcvd = NodeUtils.logts(System.currentTimeMillis()) + ";from=" + ip + ";by=" + lip;
+ Target[] targets = null;
+ if (fileid.startsWith("/publish/")) {
+ fileid = fileid.substring(9);
+ int i = fileid.indexOf('/');
+ if (i == -1 || i == fileid.length() - 1) {
+ logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req.getRemoteAddr());
+ resp.sendError(HttpServletResponse.SC_NOT_FOUND, "Invalid request URI. Expecting <feed-publishing-url>/<fileid>. Possible missing fileid.");
+ return;
+ }
+ feedid = fileid.substring(0, i);
+ fileid = fileid.substring(i + 1);
+ pubid = config.getPublishId();
+ xpubid = req.getHeader("X-ATT-DR-PUBLISH-ID");
+ targets = config.getTargets(feedid);
+ } else if (fileid.startsWith("/internal/publish/")) {
+ if (!config.isAnotherNode(credentials, ip)) {
+ logger.info("NODE0107 Rejecting unauthorized node-to-node transfer attempt from " + ip);
+ resp.sendError(HttpServletResponse.SC_FORBIDDEN);
+ return;
+ }
+ fileid = fileid.substring(18);
+ pubid = req.getHeader("X-ATT-DR-PUBLISH-ID");
+ targets = config.parseRouting(req.getHeader("X-ATT-DR-ROUTING"));
+ } else {
+ logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req.getRemoteAddr());
+ resp.sendError(HttpServletResponse.SC_NOT_FOUND, "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
+ return;
+ }
+ if (fileid.indexOf('/') != -1) {
+ logger.info("NODE0105 Rejecting bad URI for PUT or DELETE of " + req.getPathInfo() + " from " + req.getRemoteAddr());
+ resp.sendError(HttpServletResponse.SC_NOT_FOUND, "Invalid request URI. Expecting <feed-publishing-url>/<fileid>.");
+ return;
+ }
+ String qs = req.getQueryString();
+ if (qs != null) {
+ fileid = fileid + "?" + qs;
+ }
+ String hp = config.getMyName();
+ int xp = config.getExtHttpsPort();
+ if (xp != 443) {
+ hp = hp + ":" + xp;
+ }
+ String logurl = "https://" + hp + "/internal/publish/" + fileid;
+ if (feedid != null) {
+ logurl = "https://" + hp + "/publish/" + feedid + "/" + fileid;
+ String reason = config.isPublishPermitted(feedid, credentials, ip);
+ if (reason != null) {
+ logger.info("NODE0111 Rejecting unauthorized publish attempt to feed " + feedid + " fileid " + fileid + " from " + ip + " reason " + reason);
+ resp.sendError(HttpServletResponse.SC_FORBIDDEN,reason);
+ return;
+ }
+ user = config.getAuthUser(feedid, credentials);
+ String newnode = config.getIngressNode(feedid, user, ip);
+ if (newnode != null) {
+ String port = "";
+ int iport = config.getExtHttpsPort();
+ if (iport != 443) {
+ port = ":" + iport;
+ }
+ String redirto = "https://" + newnode + port + "/publish/" + feedid + "/" + fileid;
+ logger.info("NODE0108 Redirecting publish attempt for feed " + feedid + " user " + user + " ip " + ip + " to " + redirto);
+ resp.sendRedirect(redirto);
+ return;
+ }
+ resp.setHeader("X-ATT-DR-PUBLISH-ID", pubid);
+ }
+ String fbase = config.getSpoolDir() + "/" + pubid;
+ File data = new File(fbase);
+ File meta = new File(fbase + ".M");
+ OutputStream dos = null;
+ Writer mw = null;
+ InputStream is = null;
+ try {
+ StringBuffer mx = new StringBuffer();
+ mx.append(req.getMethod()).append('\t').append(fileid).append('\n');
+ Enumeration hnames = req.getHeaderNames();
+ String ctype = null;
+ while (hnames.hasMoreElements()) {
+ String hn = (String)hnames.nextElement();
+ String hnlc = hn.toLowerCase();
+ if ((isput && ("content-type".equals(hnlc) ||
+ "content-language".equals(hnlc) ||
+ "content-md5".equals(hnlc) ||
+ "content-range".equals(hnlc))) ||
+ "x-att-dr-meta".equals(hnlc) ||
+ (feedid == null && "x-att-dr-received".equals(hnlc)) ||
+ (hnlc.startsWith("x-") && !hnlc.startsWith("x-att-dr-"))) {
+ Enumeration hvals = req.getHeaders(hn);
+ while (hvals.hasMoreElements()) {
+ String hv = (String)hvals.nextElement();
+ if ("content-type".equals(hnlc)) {
+ ctype = hv;
+ }
+ if ("x-att-dr-meta".equals(hnlc)) {
+ if (hv.length() > 4096) {
+ logger.info("NODE0109 Rejecting publish attempt with metadata too long for feed " + feedid + " user " + user + " ip " + ip);
+ resp.sendError(HttpServletResponse.SC_BAD_REQUEST, "Metadata too long");
+ return;
+ }
+ if (!MetaDataPattern.matcher(hv.replaceAll("\\\\.", "X")).matches()) {
+ logger.info("NODE0109 Rejecting publish attempt with malformed metadata for feed " + feedid + " user " + user + " ip " + ip);
+ resp.sendError(HttpServletResponse.SC_BAD_REQUEST, "Malformed metadata");
+ return;
+ }
+ }
+ mx.append(hn).append('\t').append(hv).append('\n');
+ }
+ }
+ }
+ mx.append("X-ATT-DR-RECEIVED\t").append(rcvd).append('\n');
+ String metadata = mx.toString();
+ byte[] buf = new byte[1024 * 1024];
+ int i;
+ try {
+ is = req.getInputStream();
+ dos = new FileOutputStream(data);
+ while ((i = is.read(buf)) > 0) {
+ dos.write(buf, 0, i);
+ }
+ is.close();
+ is = null;
+ dos.close();
+ dos = null;
+ } catch (IOException ioe) {
+ long exlen = -1;
+ try {
+ exlen = Long.parseLong(req.getHeader("Content-Length"));
+ } catch (Exception e) {
+ }
+ StatusLog.logPubFail(pubid, feedid, logurl, req.getMethod(), ctype, exlen, data.length(), ip, user, ioe.getMessage());
+ throw ioe;
+ }
+ Path dpath = Paths.get(fbase);
+ for (Target t: targets) {
+ DestInfo di = t.getDestInfo();
+ if (di == null) {
+ // TODO: unknown destination
+ continue;
+ }
+ String dbase = di.getSpool() + "/" + pubid;
+ Files.createLink(Paths.get(dbase), dpath);
+ mw = new FileWriter(meta);
+ mw.write(metadata);
+ if (di.getSubId() == null) {
+ mw.write("X-ATT-DR-ROUTING\t" + t.getRouting() + "\n");
+ }
+ mw.close();
+ meta.renameTo(new File(dbase + ".M"));
+ }
+ resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
+ resp.getOutputStream().close();
+ StatusLog.logPub(pubid, feedid, logurl, req.getMethod(), ctype, data.length(), ip, user, HttpServletResponse.SC_NO_CONTENT);
+ } catch (IOException ioe) {
+ logger.info("NODE0110 IO Exception receiving publish attempt for feed " + feedid + " user " + user + " ip " + ip + " " + ioe.toString(), ioe);
+ throw ioe;
+ } finally {
+ if (is != null) { try { is.close(); } catch (Exception e) {}}
+ if (dos != null) { try { dos.close(); } catch (Exception e) {}}
+ if (mw != null) { try { mw.close(); } catch (Exception e) {}}
+ try { data.delete(); } catch (Exception e) {}
+ try { meta.delete(); } catch (Exception e) {}
+ }
+ }
+
+ private int getIdFromPath(HttpServletRequest req) {
+ String path = req.getPathInfo();
+ if (path == null || path.length() < 2)
+ return -1;
+ try {
+ return Integer.parseInt(path.substring(1));
+ } catch (NumberFormatException e) {
+ return -1;
+ }
+ }
+}
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