const charset = "EUC-JP" ;
const ScriptableUnicodeConverter = Components.Constructor(
"@mozilla.org/intl/scriptableunicodeconverter" ,
"nsIScriptableUnicodeConverter"
);
var gConverter;
function error(inString, outString, msg) {
var dispIn = "" ;
var dispOut = "" ;
var i;
for (i = 0 ; i < inString.length; ++i) {
dispIn += " x" + inString.charCodeAt(i).toString(16 );
}
if (!outString.length) {
dispOut = "<empty>" ;
} else {
for (i = 0 ; i < outString.length; ++i) {
dispOut += " x" + outString.charCodeAt(i).toString(16 );
}
}
dump('"' + dispIn + '" ==> "' + dispOut + '"\n' );
do_throw("security risk: " + msg);
}
function IsASCII(charCode) {
return charCode <= 0 x7e;
}
function IsNotGR(charCode) {
return charCode < 0 xa1 || charCode > 0 xfe;
}
function test(inString) {
var outString = gConverter.ConvertToUnicode(inString) + gConverter.Finish();
var outLen = outString.length;
if (
IsASCII(inString.charCodeAt(1 )) &&
inString.charCodeAt(1 ) != outString.charCodeAt(outLen - 5 )
) {
error(inString, outString, "ASCII second byte eaten" );
} else if (
IsASCII(inString.charCodeAt(2 )) &&
inString.charCodeAt(2 ) != outString.charCodeAt(outLen - 4 )
) {
error(inString, outString, "ASCII third byte eaten" );
} else if (
inString.charCodeAt(0 ) == 0 x8f &&
inString.charCodeAt(1 ) > 0 x7f &&
IsNotGR(inString.charCodeAt(2 )) &&
!(
outString.charCodeAt(outLen - 4 ) == 0 xfffd ||
outString.charCodeAt(outLen - 4 ) == inString.charCodeAt(2 )
)
) {
error(inString, outString, "non-GR third byte eaten" );
}
}
function run_test() {
gConverter = new ScriptableUnicodeConverter();
gConverter.charset = charset;
var byte1, byte2, byte3;
for (byte1 = 1 ; byte1 < 0 x100; ++byte1) {
for (byte2 = 1 ; byte2 < 0 x100; ++byte2) {
if (byte1 == 0 x8f) {
for (byte3 = 1 ; byte3 < 0 x100; ++byte3) {
test(String.fromCharCode(byte1, byte2, byte3) + "foo" );
}
} else {
test(String.fromCharCode(byte1, byte2) + " foo" );
}
}
}
}
Messung V0.5 in Prozent C=97 H=86 G=91
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-05)
¤
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