Rewrite der URLs für signierte Dateien und Bilder implementiert und getestet.

git-svn-id: https://joinup.ec.europa.eu/svn/moa-idspss/trunk@74 d688527b-c9ab-4aba-bd8d-4036d912da1d

3 files changed, 128 insertions, 0 deletions

diff --git a/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/Constants.java b/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/Constants.java
index 8dd6a87ff..6e3a7c1b7 100644
--- a/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/Constants.java
+++ b/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/Constants.java
@@ -25,6 +25,9 @@ public class Constants
   public static final String IP_SP_TRUSTPROFILEID_ = "service.sp.trustProfileId";
   public static final String IP_RES_SHOWETSI_ = "result.showetsi";
   public static final String IP_RES_SHOWSLMAN_ = "result.showslmanifest";
+  public static final String IP_REW_PROXYRUL_ = "rewrite.proxyURL";
+  public static final String IP_REW_SLI_URLPARAMNAME_ = "rewrite.sliUrlParamName";
+  public static final String IP_REW_SLIRUL_ = "result.sliUrl";
   
   // Logging hierarchies
   
@@ -41,6 +44,7 @@ public class Constants
   public static final String WSCP_SL2MOA_TRANSFORMER_ = "sl2MoaTransformer";
   public static final String WSCP_MOA2SL_TRANSFORMER_ = "moa2SlTransformer";
   public static final String WSCP_XMLPARSER_ = "xmlParser";
+  public static final String WSCP_URL_REWRITER_ = "urlRewriter";
   
   // Security-Layer constants
   
diff --git a/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/URLRewriter.java b/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/URLRewriter.java
new file mode 100644
index 000000000..e1b8e77e5
--- /dev/null
+++ b/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/URLRewriter.java
@@ -0,0 +1,119 @@
+/*
+ * Created on 15.12.2003
+ *
+ * (c) Stabsstelle IKT-Strategie des Bundes
+ */
+package at.gv.egovernment.moa.spss.slinterface;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.Properties;
+
+import org.apache.log4j.Logger;
+
+/**
+ * @author Gregor Karlinger (mailto:gregor.karlinger@cio.gv.at) 
+ */
+public class URLRewriter
+{
+  private static Logger logger_ = Logger.getLogger(Constants.LH_LISTENERS_);
+
+  Properties initProps_;
+  
+  /**
+   * Class that manges the rewriting of URLs for the result pages. Necessary as workaround for the deploy-
+   * ment in the Federal Chancellory.
+   */
+  public URLRewriter(Properties initProps)
+  {
+    initProps_ = initProps;
+  }
+  
+  /**
+   * Rewrites the specified URL. 
+   * 
+   * @param url A URL relative to the context path of the serlet.
+   * 
+   * @param sessionId The session id which will be considered in the rewritten URL.
+   * 
+   * @return A URL fitting for the proxy component running at the Federal Chancellory.
+   */
+  public String rewrite(String url, String sessionId)
+  {
+    String proxyURLStr = initProps_.getProperty(Constants.IP_REW_PROXYRUL_);
+    String slInterfaceURLParamName = initProps_.getProperty(Constants.IP_REW_SLI_URLPARAMNAME_);
+    String slInterfaceURLStr = initProps_.getProperty(Constants.IP_REW_SLIRUL_);
+    
+    if (proxyURLStr == null || 
+      slInterfaceURLParamName == null || 
+      slInterfaceURLStr == null ||
+      "".equals(proxyURLStr.trim()) ||
+      "".equals(slInterfaceURLParamName.trim()) ||
+      "".equals(slInterfaceURLStr.trim()))
+    {
+      logger_.warn("Some params for URL rewriting are not available; rewriting disabled:" +
+        " proxyURL: \"" + proxyURLStr + "\"," +
+        " slInterfaceURLParamName: \"" + slInterfaceURLParamName + "\"," +
+        " slInterfaceURL: \"" + slInterfaceURLStr + "\"");
+      return url;  
+    }
+    
+    URL slInterfaceURL = null;
+    try
+    {
+      slInterfaceURL = new URL(slInterfaceURLStr + url);
+    }
+    catch (MalformedURLException e)
+    {
+      logger_.warn("Parameter \"slInterfaceURL\" is not a valid URL: \"" + slInterfaceURLStr + "\"");
+      return url;
+    }
+    URL proxyURL = null;
+    try
+    {
+      proxyURL = new URL(proxyURLStr);
+    }
+    catch (MalformedURLException e)
+    {
+      logger_.warn("Parameter \"proxyURL\" is not a valid URL: \"" + proxyURLStr + "\"");
+      return url;
+    }
+
+    String sessionIdParam = (sessionId != null) ? (";" + "jsessionid=" + sessionId) : "";
+    String returnValue = 
+      proxyURL.getProtocol() +
+      "://" +
+      proxyURL.getHost() +
+      ((proxyURL.getPort() != -1) ? (":" + proxyURL.getPort()) : "") + 
+      proxyURL.getPath() +
+      ((proxyURL.getQuery() != null) ? "?" + proxyURL.getQuery() + "&" : "?") +
+      slInterfaceURLParamName + "=" +
+      slInterfaceURL.getProtocol() +
+      "://" +
+      slInterfaceURL.getHost() +
+      ((slInterfaceURL.getPort() != -1) ? (":" + slInterfaceURL.getPort()) : "") +
+      slInterfaceURL.getPath() + 
+      sessionIdParam +
+      ((slInterfaceURL.getQuery() != null) ? "?" + escapeQueryPart(slInterfaceURL.getQuery()) : ""); 
+      
+    logger_.debug("Rewritten URL: " + returnValue);
+    return returnValue;
+  }
+  
+  private String escapeQueryPart(String query)
+  {
+    StringBuffer querySB = new StringBuffer();
+    for (int i = 0; i < query.length(); i++)
+    {
+      if (query.charAt(i) == '&')
+      {
+        querySB.append("%26");
+      }
+      else
+      {
+        querySB.append(query.charAt(i));
+      } 
+    }
+    return querySB.toString();
+  }
+}
diff --git a/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/listeners/ContextListener.java b/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/listeners/ContextListener.java
index 83b6e96dd..3fa3a90a2 100644
--- a/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/listeners/ContextListener.java
+++ b/spss.slinterface/WEB-INF/src/at/gv/egovernment/moa/spss/slinterface/listeners/ContextListener.java
@@ -24,6 +24,7 @@ import org.apache.xerces.xni.parser.XMLInputSource;
 import org.xml.sax.SAXException;
 
 import at.gv.egovernment.moa.spss.slinterface.Constants;
+import at.gv.egovernment.moa.spss.slinterface.URLRewriter;
 
 /**
  * @author Gregor Karlinger (mailto:gregor.karlinger@cio.gv.at)
@@ -81,6 +82,10 @@ public class ContextListener implements ServletContextListener
       logger_.error("Cannot load initialization properties from location \"" + initPropsLoc + "\".", e);
     }
 
+    // Put helper object for rewriting URLs in the result page into the context
+    URLRewriter urlRewriter = new URLRewriter((Properties)context.getAttribute(Constants.WSCP_INIT_PROPS_));
+    context.setAttribute(Constants.WSCP_URL_REWRITER_, urlRewriter);
+
     // Initialize XML parser
     SymbolTable symbolTable = new SymbolTable(BIG_PRIME);
     XMLGrammarPool grammarPool = new XMLGrammarPoolImpl();