New example - show how to display encrypted properties.

kevin.w.wall · kevin.w.wall · commit 32f0aaabac09 · 2010-08-15T21:53:49.000Z
diff --git a/src/examples/java/DisplayEncryptedProperties.java b/src/examples/java/DisplayEncryptedProperties.java
@@ -0,0 +1,73 @@
+import java.io.*;
+import java.util.*;
+import org.owasp.esapi.EncryptedProperties;
+import org.owasp.esapi.errors.EncryptionException;
+import org.owasp.esapi.reference.crypto.DefaultEncryptedProperties;
+
+// Purpose: Short code snippet to show how to display encrypted property files
+//          that were encrypted using ESAPI's EncryptedProperties class.
+//
+// Usage: java -classpath <cp> DisplayEncryptedProperties encryptedPropFileName
+//        where <cp> is proper classpath, which minimally include esapi.jar & log4j.jar
+public class DisplayEncryptedProperties {
+
+    public DisplayEncryptedProperties() {
+    }
+
+    public void loadProperties(String encryptedPropertiesFilename,
+                                  Properties props )
+        throws IOException
+    {
+         EncryptedProperties loader = new DefaultEncryptedProperties();
+         loader.load( new FileInputStream(
+                                    new File( encryptedPropertiesFilename) ) );
+
+         try {
+             props.setProperty( "database.driver",
+                                loader.getProperty( "database.driver" ) );
+             props.setProperty( "jdbc.url",
+                                loader.getProperty( "database.url" ) );
+             props.setProperty( "jdbc.username",
+                                loader.getProperty( "database.username" ) );
+             props.setProperty( "jdbc.password",
+                                loader.getProperty( "database.password" ) );
+         } catch( EncryptionException ee ) {
+             ee.printStackTrace();
+         }
+    }
+
+    public void showProperties(Properties props) throws Exception
+    {
+        String value = null;
+        value = props.getProperty( "database.driver");
+        System.out.println("database.driver=" + value);
+        value = props.getProperty( "jdbc.url");
+        System.out.println("jdbc.database=" + value);
+        value = props.getProperty( "jdbc.username");
+        System.out.println("jdbc.username=" + value);
+        value = props.getProperty( "jdbc.password");
+        System.out.println("jdbc.password=" + value);
+    }
+
+
+    public static void main(String[] args) {
+
+        try {
+            DisplayEncryptedProperties dep = new DisplayEncryptedProperties();
+            Properties props = new Properties();
+
+            String encryptedPropFname = "encrypted.properties";
+            if ( args.length == 1 ) {
+                encryptedPropFname = args[0];
+            }
+
+            dep.loadProperties(encryptedPropFname, props);
+            dep.showProperties(props);
+
+        } catch(Throwable t) {
+            System.err.println("Caught: " + t.getClass().getName() +
+                               "; exception msg: " + t);
+            t.printStackTrace(System.err);
+        }
+    }
+}
