Added ElakConnectionBuilder (not yet finalized)

git-svn-id: https://joinup.ec.europa.eu/svn/moa-idspss/trunk@210 d688527b-c9ab-4aba-bd8d-4036d912da1d

1 files changed, 226 insertions, 0 deletions

diff --git a/id.server/src/at/gv/egovernment/moa/id/proxy/ElakConnectionBuilder.java b/id.server/src/at/gv/egovernment/moa/id/proxy/ElakConnectionBuilder.java
new file mode 100644
index 000000000..a1ccb7353
--- /dev/null
+++ b/id.server/src/at/gv/egovernment/moa/id/proxy/ElakConnectionBuilder.java
@@ -0,0 +1,226 @@
+package at.gv.egovernment.moa.id.proxy;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+
+import com.ibm.webdav.HTTPHeaders;
+import com.ibm.webdav.protocol.URLStreamHandlerFactory;
+import java.util.StringTokenizer;
+import com.ibm.webdav.protocol.http.WebDAVURLConnection;
+import java.net.URL;
+import java.net.URLStreamHandler;
+import java.util.Iterator;
+import java.util.Map;
+
+import javax.net.ssl.SSLSocketFactory;
+import javax.servlet.http.HttpServletRequest;
+
+import at.gv.egovernment.moa.id.config.ConfigurationException;
+import at.gv.egovernment.moa.id.config.proxy.ProxyConfigurationProvider;
+import at.gv.egovernment.moa.id.util.MOAIDMessageProvider;
+import at.gv.egovernment.moa.logging.Logger;
+import at.gv.egovernment.moa.util.BoolUtils;
+
+import com.sun.net.ssl.HostnameVerifier;
+import com.sun.net.ssl.HttpsURLConnection;
+
+/**
+ * Defaultimplementierung von <code>ConnectionBuilder</code>.
+ * @author Paul Ivancsics
+ * @version $Id$
+ */
+public class ElakConnectionBuilder implements ConnectionBuilder {
+  
+  /** a boolean to disable the HostnameVerification (default = false)*/
+  private static boolean cbDisableHostnameVerification = false;
+
+  /** a boolean to indicat if webdav protocol handler was already set */
+  private static boolean webdavPHSet = false;
+
+  /**
+   * The system property name used to register a protocol handler.
+   */
+  public final static String PROTOCOL_HANDLER_PROPERTY_NAME = "java.protocol.handler.pkgs";
+  
+  /**
+   * The package providing the ldap protocol handler.
+   */
+  public final static String WEBDAV_PROTOCOL_HANDLER = "com.ibm.webdav.protocol";
+  
+  /**
+   * The pipe character used to sepearte different protocol handlers.
+   */
+  public final static char PIPE_CHAR = '|';
+  
+  
+  
+  
+  
+  /**
+   * Constructor for ElakConnectionBuilder.
+   * @throws ConfigurationException on any config error
+   */
+  public ElakConnectionBuilder() throws ConfigurationException {
+    cbDisableHostnameVerification = BoolUtils.valueOf(
+      ProxyConfigurationProvider.getInstance().getGenericConfigurationParameter(
+        "ProxyComponent.DisableHostnameVerification"));
+      //TODO MOA-ID BRZ undocumented feature
+    if (cbDisableHostnameVerification)
+      Logger.warn("ProxyComponent.DisableHostnameVerification: " + cbDisableHostnameVerification);
+  }
+
+  /**
+   * @see at.gv.egovernment.moa.id.proxy.ConnectionBuilder#buildConnection
+   */
+  public HttpURLConnection buildConnection(
+    HttpServletRequest req,
+    String publicURLPrefix,
+    String realURLPrefix,
+    SSLSocketFactory sslSocketFactory,
+    Map parameters)
+    throws IOException {
+
+    String requestedURL = req.getRequestURL().toString();
+    // check whether requested URL starts with publicURLPrefix
+    if (! requestedURL.startsWith(publicURLPrefix))
+      throw new IOException(MOAIDMessageProvider.getInstance().getMessage(
+        "proxy.01", new Object[] {requestedURL, publicURLPrefix}));
+
+    
+    
+    // in case of GET request, append query string to requested URL;
+    // otherwise, HttpURLConnection would perform a POST request
+    //FIXME right parameters 
+    /*
+    if ("get".equalsIgnoreCase(req.getMethod()) && ! parameters.isEmpty()) {
+      requestedURL = appendQueryString(requestedURL, parameters);
+    }
+    */
+    //TODO RSCH check functionality
+    if (null != req.getQueryString() && 0 != req.getQueryString().length() ) {
+      String query = req.getQueryString();
+      requestedURL = requestedURL + "?" + query;
+      
+      for (Iterator iter = parameters.keySet().iterator(); iter.hasNext();) {
+        String parameterKey = (String) iter.next();
+        if(query.indexOf(parameterKey) >= 0) iter.remove();
+      }
+    }
+      
+    // build real URL in online application
+    String realURLString = realURLPrefix + requestedURL.substring(publicURLPrefix.length());
+    
+    
+    Logger.info("Registering WebDAV protocol handler");
+    String protocolHandlers = System.getProperty(ElakConnectionBuilder.PROTOCOL_HANDLER_PROPERTY_NAME);
+    if (protocolHandlers == null) {
+      protocolHandlers = ElakConnectionBuilder.WEBDAV_PROTOCOL_HANDLER;
+      System.setProperty(ElakConnectionBuilder.PROTOCOL_HANDLER_PROPERTY_NAME, protocolHandlers);
+    } else {
+      // check, if WEBDAV protocol handler is already configured
+      boolean isConfigured = false;
+      StringTokenizer tokenizer = new StringTokenizer(protocolHandlers, "| ");
+      while (tokenizer.hasMoreTokens()) {
+        String protocolHandler = tokenizer.nextToken();
+        if (protocolHandler.equals(ElakConnectionBuilder.WEBDAV_PROTOCOL_HANDLER)) {
+          isConfigured = true;
+          break;
+        }
+      }
+      // if it has not been configured yet, configure it
+      if (!isConfigured) {
+        protocolHandlers = ElakConnectionBuilder.WEBDAV_PROTOCOL_HANDLER + ElakConnectionBuilder.PIPE_CHAR + protocolHandlers;
+        System.setProperty(ElakConnectionBuilder.PROTOCOL_HANDLER_PROPERTY_NAME, protocolHandlers);
+      }
+    }
+    Logger.info("Registered protocol handlers: " + protocolHandlers);   
+    Class webdavSH = null;
+    try
+    {
+      webdavSH = Class.forName(ElakConnectionBuilder.WEBDAV_PROTOCOL_HANDLER + ".http.Handler");
+    }
+    catch (ClassNotFoundException e)
+    {
+      // TODO Auto-generated catch block
+      e.printStackTrace();
+    }
+    URLStreamHandler urlStreamHandler = null;
+    try
+    {
+      urlStreamHandler = (URLStreamHandler) webdavSH.newInstance();
+    }
+    catch (InstantiationException e1)
+    {
+      // TODO Auto-generated catch block
+      e1.printStackTrace();
+    }
+    catch (IllegalAccessException e1)
+    {
+      // TODO Auto-generated catch block
+      e1.printStackTrace();
+    }
+    //URL testURL = new URL("http", realURLString.substring("http://localhost:82".length()), 82, "", urlStreamHandler);
+    //WebDAVURLConnection webDavTest = (WebDAVURLConnection) testURL.openConnection(); 
+    
+    
+    URL testURL = new URL(realURLString);
+    Logger.debug("TEST URL ist von der Klasse: " + testURL.getClass().getName());
+    
+    //URL url = new URL(realURLString);
+    URL testURL2 = new URL(realURLString);
+
+    URL url = new URL("http", "localhost", 82, realURLString.substring("http://localhost:82".length()), urlStreamHandler);
+    
+    Logger.debug("OA Request: " + req.getMethod() + " " + url.toString());
+    WebDAVURLConnection webDavConn = (WebDAVURLConnection) url.openConnection(); 
+    HttpURLConnection conn = (HttpURLConnection)webDavConn;
+    webDavConn.setRequestMethod(req.getMethod());
+    webDavConn.setDoInput(true);
+    webDavConn.setDoOutput(true);
+    //conn.setUseCaches(false);
+    webDavConn.setAllowUserInteraction(true);
+    webDavConn.setInstanceFollowRedirects(false);
+    if (conn instanceof HttpsURLConnection && sslSocketFactory != null) {
+      HttpsURLConnection httpsConn = (HttpsURLConnection) conn;
+      httpsConn.setSSLSocketFactory(sslSocketFactory);
+      if (cbDisableHostnameVerification)
+        httpsConn.setHostnameVerifier(new HostnameNonVerifier());
+    }
+    return conn;
+  }
+  /**
+   * @param requestedURL
+   * @param parameters
+   * @return
+   */
+  private String appendQueryString(String requestedURL, Map parameters) {
+    String newURL = requestedURL;
+    for (Iterator iter = parameters.keySet().iterator(); iter.hasNext();) {
+      String paramName = (String)iter.next();
+      String paramValue = (String)parameters.get(paramName);
+      String paramString = paramName + "=" + paramValue;
+      if (newURL.indexOf("?") < 0)
+        newURL = newURL + "?" + paramString;
+      else
+        newURL = newURL + "&" + paramString;
+    }
+    return newURL;
+  }
+  
+  /**
+     * @author Stefan Knirsch
+     * @version $Id$
+     * A private class to change the standard HostName verifier to disable the
+     * Hostname Verification Check
+     */
+  private class HostnameNonVerifier implements HostnameVerifier {
+    
+    /**
+     * @see com.sun.net.ssl.HostnameVerifier#verify(String, String)
+     */
+    public boolean verify(String arg0, String arg1) {
+      return true;
+    }
+  }
+
+}