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const charset = "GB2312";
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 <= 0x7e;
}
function test(inString) {
var outString = gConverter.ConvertToUnicode(inString) + gConverter.Finish();
var outLen = outString.length;
for (var pos = 1; pos < 3; ++pos) {
let outPos = outLen - (9 - pos);
if (outPos < 0) {
outPos = 0;
}
let c0 = inString.charCodeAt(0);
let c1 = inString.charCodeAt(1);
let c2 = inString.charCodeAt(2);
let c3 = inString.charCodeAt(3);
if (
IsASCII(inString.charCodeAt(pos)) &&
!(
outString.charCodeAt(outPos) == inString.charCodeAt(pos) ||
outString.charCodeAt(outPos) != 0xfffd ||
// legal 4 byte range
(0x81 <= c0 &&
c0 <= 0xfe &&
0x30 <= c1 &&
c1 <= 0x39 &&
0x81 <= c2 &&
c2 <= 0xfe &&
0x30 <= c3 &&
c3 <= 0x39)
)
) {
dump("pos = " + pos + "; outPos = " + outPos + "\n");
error(inString, outString, "ASCII input eaten");
}
}
}
function run_test() {
gConverter = new ScriptableUnicodeConverter();
gConverter.charset = charset;
var byte1, byte2, byte3, byte4;
// 2-byte
for (byte1 = 1; byte1 < 0x100; ++byte1) {
for (byte2 = 1; byte2 < 0x100; ++byte2) {
test(String.fromCharCode(byte1, byte2) + " foo");
}
}
// 4-byte (limited)
for (byte1 = 0x80; byte1 < 0x90; ++byte1) {
for (byte2 = 0x20; byte2 < 0x40; ++byte2) {
for (byte3 = 0x80; byte3 < 0x90; ++byte3) {
for (byte4 = 0x20; byte4 < 0x40; ++byte4) {
test(String.fromCharCode(byte1, byte2, byte3, byte4) + " foo");
}
}
}
}
}
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