This currently just contains the encoding function for the basic

password encryption specified in the HTTP v1.1 RFC.  (It's used by
JAWS during the PUT command authentication.)

1 files changed, 85 insertions, 0 deletions

diff --git a/java/src/HTTPHelper.java b/java/src/HTTPHelper.java
new file mode 100644
index 00000000000..cfb5e01876f
--- /dev/null
+++ b/java/src/HTTPHelper.java
@@ -0,0 +1,85 @@
+package JACE.Connection;
+
+import java.lang.*;
+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;
+    }
+};