Code snippet and declaration for the Base64Encoder class are below. The only way I can think to simulate Windows integrated security (which worked in JDK 1.1.8 using the Microsoft JVM, but not in the Java 1.3 plugin) is to pull the username and clear text password from the server variables (since we are using Basic authentication) and pass them down to the applet in parameters, then use those credentials to Authorize the URLConnection.
<snip>
// create a URL connection to the
servlet URL action = new URL(servletLoc );
URLConnection url = action.openConnection();
String encoding = "username:thepassword";
encoding = new Base64Encoder().encode(encoding.getBytes());
url.setRequestProperty("Authorization", "BASIC " + encoding);
url.setAllowUserInteraction( false );
// get the servlet parameters as an XMl String
String postData = command.getParameters();
// set the URLs attributes
url.setDoInput(true);
url.setDoOutput(true);
url.setUseCaches(false);
url.setRequestProperty("Content-type", "text/xml");
url.setRequestProperty("Content-length", "" + postData.length());
// Write out post data
DataOutputStream out = new DataOutputStream(url.getOutputStream());
out.writeBytes(postData);
out.flush();
out.close();
// get the results into an XML DOMDocument
employeeDoc.loadFromInputStream( url.getInputStream());
</snip>
Here is the Base64Encoder class I am using:
public class Base64Encoder
{
public static final char [ ] alphabet = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', // 0 to 7
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', // 8 to 15
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', // 16 to 23
'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', // 24 to 31
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', // 32 to 39
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', // 40 to 47
'w', 'x', 'y', 'z', '0', '1', '2', '3', // 48 to 55
'4', '5', '6', '7', '8', '9', '+', '/' }; // 56 to 63
public static String encode ( String s )
{
return encode ( s.getBytes ( ) );
}
public static String encode ( byte [ ] octetString )
{
int bits24;
int bits6;
char [ ] out
= new char [ ( ( octetString.length - 1 ) / 3 + 1 ) * 4 ];
int outIndex = 0;
int i = 0;
while ( ( i + 3 ) <= octetString.length )
{
// store the octets
bits24 = ( octetString [ i++ ] & 0xFF ) << 16;
bits24 |= ( octetString [ i++ ] & 0xFF ) << 8;
bits24 |= ( octetString [ i++ ] & 0xFF ) << 0;
bits6 = ( bits24 & 0x00FC0000 ) >> 18;
out [ outIndex++ ] = alphabet [ bits6 ];
bits6 = ( bits24 & 0x0003F000 ) >> 12;
out [ outIndex++ ] = alphabet [ bits6 ];
bits6 = ( bits24 & 0x00000FC0 ) >> 6;
out [ outIndex++ ] = alphabet [ bits6 ];
bits6 = ( bits24 & 0x0000003F );
out [ outIndex++ ] = alphabet [ bits6 ];
}
if ( octetString.length - i == 2 )
{
// store the octets
bits24 = ( octetString [ i ] & 0xFF ) << 16;
bits24 |= ( octetString [ i + 1 ] & 0xFF ) << 8;
bits6 = ( bits24 & 0x00FC0000 ) >> 18;
out [ outIndex++ ] = alphabet [ bits6 ];
bits6 = ( bits24 & 0x0003F000 ) >> 12;
out [ outIndex++ ] = alphabet [ bits6 ];
bits6 = ( bits24 & 0x00000FC0 ) >> 6;
out [ outIndex++ ] = alphabet [ bits6 ];
// padding
out [ outIndex++ ] = '=';
}
else if ( octetString.length - i == 1 )
{
// store the octets
bits24 = ( octetString [ i ] & 0xFF ) << 16;
bits6 = ( bits24 & 0x00FC0000 ) >> 18;
out [ outIndex++ ] = alphabet [ bits6 ];
bits6 = ( bits24 & 0x0003F000 ) >> 12;
out [ outIndex++ ] = alphabet [ bits6 ];
// padding
out [ outIndex++ ] = '=';
out [ outIndex++ ] = '=';
}
return new String ( out );
}
}
[This message has been edited by Christopher McGuirk (edited September 20, 2001).]
