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package JACE.Connection;
import JACE.OS.*;
// Collection of various methods that have to do with HTTP
public class HTTPHelper
{
// Encoding and decoding yadda
public static String Alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
// Basic encoding used in the HTTP 1.1 RFC. This doesn't
// put the string "Basic " at the beginning of the return
// string. Adapted from James' JAWS HTTP_Helpers code.
// Returns null on error.
public static String EncodeBase64 (String secret)
{
StringBuffer output = new StringBuffer();
// Index of the input string
int inidx = 0;
// character value
int c;
int char_count = 0;
int bits = 0;
boolean error = false;
while (inidx < secret.length())
{
c = secret.charAt(inidx++);
// This will mess up internationalization. I wonder if it is really
// necessary for HTTP?
if (c > 255)
{
ACE.DEBUG ("encountered char > 255 (decimal %d): " + c);
error = true;
break;
}
bits += c;
char_count++;
if (char_count == 3)
{
output.append(HTTPHelper.Alphabet.charAt(bits >> 18));
output.append(HTTPHelper.Alphabet.charAt((bits >> 12) & 0x3f));
output.append(HTTPHelper.Alphabet.charAt((bits >> 6) & 0x3f));
output.append(HTTPHelper.Alphabet.charAt(bits & 0x3f));
bits = 0;
char_count = 0;
}
else
bits <<= 8;
}
if (!error)
{
if (char_count != 0)
{
bits <<= 16 - (8 * char_count);
output.append(HTTPHelper.Alphabet.charAt(bits >> 18));
output.append(HTTPHelper.Alphabet.charAt((bits >> 12) & 0x3f));
if (char_count == 1)
{
output.append("==");
}
else
{
output.append(HTTPHelper.Alphabet.charAt((bits >> 6) & 0x3f));
output.append('=');
}
}
return output.toString();
}
// Returns null on error
return null;
}
};
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