| /* |
| * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.net.www.http; |
| |
| import java.io.*; |
| import java.util.ArrayList; |
| import java.util.regex.*; |
| import sun.net.NetProperties; |
| import sun.util.logging.PlatformLogger; |
| |
| /** |
| * Main class of the HTTP traffic capture tool. |
| * Captures are triggered by the sun.net.http.captureRules system property. |
| * If set, it should point to a file containing the capture rules. |
| * Format for the file is simple: |
| * - 1 rule per line |
| * - Lines starting with a # are considered comments and ignored |
| * - a rule is a pair of a regular expression and file pattern, separated by a comma |
| * - The regular expression is applied to URLs, if it matches, the traffic for |
| * that URL will be captured in the associated file. |
| * - if the file name contains a '%d', then that sequence will be replaced by a |
| * unique random number for each URL. This allow for multi-threaded captures |
| * of URLs matching the same pattern. |
| * - Rules are checked in sequence, in the same order as in the file, until a |
| * match is found or the end of the list is reached. |
| * |
| * Examples of rules: |
| * www\.sun\.com , sun%d.log |
| * yahoo\.com\/.*asf , yahoo.log |
| * |
| * @author jccollet |
| */ |
| public class HttpCapture { |
| private File file; |
| private boolean incoming = true; |
| private BufferedWriter out; |
| private static boolean initialized; |
| private static volatile ArrayList<Pattern> patterns; |
| private static volatile ArrayList<String> capFiles; |
| |
| private static synchronized void init() { |
| initialized = true; |
| String rulesFile = java.security.AccessController.doPrivileged( |
| new java.security.PrivilegedAction<>() { |
| public String run() { |
| return NetProperties.get("sun.net.http.captureRules"); |
| } |
| }); |
| if (rulesFile != null && !rulesFile.isEmpty()) { |
| BufferedReader in; |
| try { |
| in = new BufferedReader(new FileReader(rulesFile)); |
| } catch (FileNotFoundException ex) { |
| return; |
| } |
| try { |
| String line = in.readLine(); |
| while (line != null) { |
| line = line.trim(); |
| if (!line.startsWith("#")) { |
| // skip line if it's a comment |
| String[] s = line.split(","); |
| if (s.length == 2) { |
| if (patterns == null) { |
| patterns = new ArrayList<>(); |
| capFiles = new ArrayList<>(); |
| } |
| patterns.add(Pattern.compile(s[0].trim())); |
| capFiles.add(s[1].trim()); |
| } |
| } |
| line = in.readLine(); |
| } |
| } catch (IOException ioe) { |
| |
| } finally { |
| try { |
| in.close(); |
| } catch (IOException ex) { |
| } |
| } |
| } |
| } |
| |
| private static synchronized boolean isInitialized() { |
| return initialized; |
| } |
| |
| private HttpCapture(File f, java.net.URL url) { |
| file = f; |
| try { |
| out = new BufferedWriter(new FileWriter(file, true)); |
| out.write("URL: " + url + "\n"); |
| } catch (IOException ex) { |
| PlatformLogger.getLogger(HttpCapture.class.getName()).severe(null, ex); |
| } |
| } |
| |
| public synchronized void sent(int c) throws IOException { |
| if (incoming) { |
| out.write("\n------>\n"); |
| incoming = false; |
| out.flush(); |
| } |
| out.write(c); |
| } |
| |
| public synchronized void received(int c) throws IOException { |
| if (!incoming) { |
| out.write("\n<------\n"); |
| incoming = true; |
| out.flush(); |
| } |
| out.write(c); |
| } |
| |
| public synchronized void flush() throws IOException { |
| out.flush(); |
| } |
| |
| public static HttpCapture getCapture(java.net.URL url) { |
| if (!isInitialized()) { |
| init(); |
| } |
| if (patterns == null || patterns.isEmpty()) { |
| return null; |
| } |
| String s = url.toString(); |
| for (int i = 0; i < patterns.size(); i++) { |
| Pattern p = patterns.get(i); |
| if (p.matcher(s).find()) { |
| String f = capFiles.get(i); |
| File fi; |
| if (f.indexOf("%d") >= 0) { |
| java.util.Random rand = new java.util.Random(); |
| do { |
| String f2 = f.replace("%d", Integer.toString(rand.nextInt())); |
| fi = new File(f2); |
| } while (fi.exists()); |
| } else { |
| fi = new File(f); |
| } |
| return new HttpCapture(fi, url); |
| } |
| } |
| return null; |
| } |
| } |