Reformatted code, updated to new Analytics tags, fixed a problem with EmailAuthenticator

[zxing.git] / zxingorg / src / com / google / zxing / web / DoSFilter.java

diff --git a/zxingorg/src/com/google/zxing/web/DoSFilter.java b/zxingorg/src/com/google/zxing/web/DoSFilter.java
index 8c6f388..bb94cea 100755 (executable)
--- a/zxingorg/src/com/google/zxing/web/DoSFilter.java
+++ b/zxingorg/src/com/google/zxing/web/DoSFilter.java
@@ -19,105 +19,105 @@ package com.google.zxing.web;
 import javax.servlet.Filter;\r
 import javax.servlet.FilterChain;\r
 import javax.servlet.FilterConfig;\r
+import javax.servlet.ServletContext;\r
 import javax.servlet.ServletException;\r
 import javax.servlet.ServletRequest;\r
 import javax.servlet.ServletResponse;\r
-import javax.servlet.ServletContext;\r
 import javax.servlet.http.HttpServletResponse;\r
 import java.io.IOException;\r
 import java.net.InetAddress;\r
 import java.net.UnknownHostException;\r
+import java.util.Collection;\r
 import java.util.Collections;\r
 import java.util.HashSet;\r
 import java.util.Set;\r
 import java.util.Timer;\r
 import java.util.TimerTask;\r
-import java.util.Collection;\r
 \r
 /**\r
  * @author Sean Owen\r
  */\r
 public final class DoSFilter implements Filter {\r
 \r
-       private static final int MAX_ACCESSES_PER_IP_PER_TIME = 10;\r
-       private static final long MAX_ACCESS_INTERVAL_MSEC = 10L * 1000L;\r
-       private static final long UNBAN_INTERVAL_MSEC = 60L * 60L * 1000L;\r
+  private static final int MAX_ACCESSES_PER_IP_PER_TIME = 10;\r
+  private static final long MAX_ACCESS_INTERVAL_MSEC = 10L * 1000L;\r
+  private static final long UNBAN_INTERVAL_MSEC = 60L * 60L * 1000L;\r
 \r
-       private final IPTrie numRecentAccesses;\r
-       private final Timer timer;\r
-       private final Set<String> bannedIPAddresses;\r
-       private final Collection<String> manuallyBannedIPAddresses;\r
-    private ServletContext context;\r
+  private final IPTrie numRecentAccesses;\r
+  private final Timer timer;\r
+  private final Set<String> bannedIPAddresses;\r
+  private final Collection<String> manuallyBannedIPAddresses;\r
+  private ServletContext context;\r
 \r
-    public DoSFilter() {\r
-               numRecentAccesses = new IPTrie();\r
-               timer = new Timer("DosFilter reset timer");\r
-               bannedIPAddresses = Collections.synchronizedSet(new HashSet<String>());\r
-               manuallyBannedIPAddresses = new HashSet<String>();\r
-       }\r
+  public DoSFilter() {\r
+    numRecentAccesses = new IPTrie();\r
+    timer = new Timer("DosFilter reset timer");\r
+    bannedIPAddresses = Collections.synchronizedSet(new HashSet<String>());\r
+    manuallyBannedIPAddresses = new HashSet<String>();\r
+  }\r
 \r
-    public void init(FilterConfig filterConfig) {\r
-        context = filterConfig.getServletContext();\r
-        String bannedIPs = filterConfig.getInitParameter("bannedIPs");\r
-           if (bannedIPs != null) {\r
-                   for (String ip : bannedIPs.split(",")) {\r
-                           manuallyBannedIPAddresses.add(ip.trim());\r
-                   }\r
-           }\r
-               timer.scheduleAtFixedRate(new ResetTask(), 0L, MAX_ACCESS_INTERVAL_MSEC);\r
-           timer.scheduleAtFixedRate(new UnbanTask(), 0L, UNBAN_INTERVAL_MSEC);\r
+  public void init(FilterConfig filterConfig) {\r
+    context = filterConfig.getServletContext();\r
+    String bannedIPs = filterConfig.getInitParameter("bannedIPs");\r
+    if (bannedIPs != null) {\r
+      for (String ip : bannedIPs.split(",")) {\r
+        manuallyBannedIPAddresses.add(ip.trim());\r
+      }\r
     }\r
+    timer.scheduleAtFixedRate(new ResetTask(), 0L, MAX_ACCESS_INTERVAL_MSEC);\r
+    timer.scheduleAtFixedRate(new UnbanTask(), 0L, UNBAN_INTERVAL_MSEC);\r
+  }\r
 \r
-    public void doFilter(ServletRequest request,\r
-                         ServletResponse response,\r
-                         FilterChain chain) throws IOException, ServletException {\r
-           if (isBanned(request)) {\r
-                   HttpServletResponse servletResponse = (HttpServletResponse) response;\r
-                   servletResponse.sendError(HttpServletResponse.SC_FORBIDDEN);\r
-           } else {\r
-                   chain.doFilter(request, response);\r
-           }\r
+  public void doFilter(ServletRequest request,\r
+                       ServletResponse response,\r
+                       FilterChain chain) throws IOException, ServletException {\r
+    if (isBanned(request)) {\r
+      HttpServletResponse servletResponse = (HttpServletResponse) response;\r
+      servletResponse.sendError(HttpServletResponse.SC_FORBIDDEN);\r
+    } else {\r
+      chain.doFilter(request, response);\r
     }\r
+  }\r
 \r
-       private boolean isBanned(ServletRequest request) {\r
-               String remoteIPAddressString = request.getRemoteAddr();\r
-               if (bannedIPAddresses.contains(remoteIPAddressString) ||\r
-                   manuallyBannedIPAddresses.contains(remoteIPAddressString)) {\r
-                       return true;\r
-               }\r
-               InetAddress remoteIPAddress;\r
-               try {\r
-                       remoteIPAddress = InetAddress.getByName(remoteIPAddressString);\r
-               } catch (UnknownHostException uhe) {\r
-                       context.log("Can't determine host from: " + remoteIPAddressString + "; assuming banned");\r
-                       return true;\r
-               }\r
-               if (numRecentAccesses.incrementAndGet(remoteIPAddress) > MAX_ACCESSES_PER_IP_PER_TIME) {\r
-                       context.log("Possible DoS attack from " + remoteIPAddressString);\r
-                       bannedIPAddresses.add(remoteIPAddressString);\r
-                       return true;\r
-               }\r
-               return false;\r
-       }\r
-\r
-       public void destroy() {\r
-           timer.cancel();\r
-        numRecentAccesses.clear();\r
-           bannedIPAddresses.clear();\r
+  private boolean isBanned(ServletRequest request) {\r
+    String remoteIPAddressString = request.getRemoteAddr();\r
+    if (bannedIPAddresses.contains(remoteIPAddressString) ||\r
+            manuallyBannedIPAddresses.contains(remoteIPAddressString)) {\r
+      return true;\r
     }\r
+    InetAddress remoteIPAddress;\r
+    try {\r
+      remoteIPAddress = InetAddress.getByName(remoteIPAddressString);\r
+    } catch (UnknownHostException uhe) {\r
+      context.log("Can't determine host from: " + remoteIPAddressString + "; assuming banned");\r
+      return true;\r
+    }\r
+    if (numRecentAccesses.incrementAndGet(remoteIPAddress) > MAX_ACCESSES_PER_IP_PER_TIME) {\r
+      context.log("Possible DoS attack from " + remoteIPAddressString);\r
+      bannedIPAddresses.add(remoteIPAddressString);\r
+      return true;\r
+    }\r
+    return false;\r
+  }\r
 \r
-       private final class ResetTask extends TimerTask {\r
-               @Override\r
-               public void run() {\r
-                       numRecentAccesses.clear();\r
-               }\r
-       }\r
+  public void destroy() {\r
+    timer.cancel();\r
+    numRecentAccesses.clear();\r
+    bannedIPAddresses.clear();\r
+  }\r
 \r
-       private final class UnbanTask extends TimerTask {\r
-               @Override\r
-               public void run() {\r
-                       bannedIPAddresses.clear();\r
-               }\r
-       }\r
+  private final class ResetTask extends TimerTask {\r
+    @Override\r
+    public void run() {\r
+      numRecentAccesses.clear();\r
+    }\r
+  }\r
+\r
+  private final class UnbanTask extends TimerTask {\r
+    @Override\r
+    public void run() {\r
+      bannedIPAddresses.clear();\r
+    }\r
+  }\r
 \r
 }
\ No newline at end of file