michael@0: const charset = "EUC-JP";
michael@0: const ScriptableUnicodeConverter =
michael@0: 	Components.Constructor("@mozilla.org/intl/scriptableunicodeconverter",
michael@0: 			       "nsIScriptableUnicodeConverter");
michael@0: var gConverter;
michael@0: 
michael@0: function error(inString, outString, msg) {
michael@0:     var dispIn = "";
michael@0:     var dispOut = "";
michael@0:     var i;
michael@0:     for (i = 0; i < inString.length; ++i) {
michael@0: 	dispIn += " x" + inString.charCodeAt(i).toString(16);
michael@0:     }
michael@0:     if (outString.length == 0) {
michael@0: 	dispOut = "<empty>";
michael@0:     } else {
michael@0: 	for (i = 0; i < outString.length; ++i) {
michael@0: 	    dispOut += " x" + outString.charCodeAt(i).toString(16);
michael@0: 	}
michael@0:     }
michael@0:     dump("\"" + dispIn + "\" ==> \"" + dispOut + "\"\n");
michael@0:     do_throw("security risk: " + msg);
michael@0: }
michael@0: 
michael@0: function IsASCII(charCode) {
michael@0:     return (charCode <= 0x7e);
michael@0: }
michael@0: 
michael@0: function IsNotGR(charCode) {
michael@0:     return (charCode < 0xa1 || charCode > 0xfe);
michael@0: }
michael@0: 
michael@0: function test(inString) {
michael@0:     var outString = gConverter.ConvertToUnicode(inString) +
michael@0: 	            gConverter.Finish();
michael@0: 
michael@0:     var outLen = outString.length;
michael@0:     if (IsASCII(inString.charCodeAt(1)) && 
michael@0: 	inString.charCodeAt(1) != outString.charCodeAt(outLen - 5))  {
michael@0: 	error(inString, outString, "ASCII second byte eaten");
michael@0:     } else if (IsASCII(inString.charCodeAt(2)) && 
michael@0: 	       inString.charCodeAt(2) != outString.charCodeAt(outLen - 4)) {
michael@0: 	error(inString, outString, "ASCII third byte eaten");
michael@0:     } else if (inString.charCodeAt(0) == 0x8f &&
michael@0: 	       inString.charCodeAt(1) > 0x7f &&
michael@0: 	       IsNotGR(inString.charCodeAt(2)) &&
michael@0: 	       (!(outString.charCodeAt(outLen - 4) == 0xFFFD ||
michael@0: 		  outString.charCodeAt(outLen - 4) == inString.charCodeAt(2)))) {
michael@0: 	error(inString, outString, "non-GR third byte eaten");
michael@0:     }
michael@0: }
michael@0: 
michael@0: function run_test() {
michael@0:     gConverter = new ScriptableUnicodeConverter();
michael@0:     gConverter.charset = charset;
michael@0: 
michael@0:     var byte1, byte2, byte3;
michael@0:     for (byte1 = 1; byte1 < 0x100; ++byte1) {
michael@0: 	for (byte2 = 1; byte2 < 0x100; ++byte2) {
michael@0: 	    if (byte1 == 0x8f) {
michael@0: 		for (byte3 = 1; byte3 < 0x100; ++byte3) {
michael@0: 		    test(String.fromCharCode(byte1, byte2, byte3) + "foo");
michael@0: 		}
michael@0: 	    } else {
michael@0: 		test(String.fromCharCode(byte1, byte2) + " foo");
michael@0: 	    }
michael@0: 	}
michael@0:     }
michael@0: }