intl/uconv/tests/unit/test_bug381412.hk.gb2312.js

   1 const charset = "hz-gb-2312";
   2
   3 function dumpStrings(inString, outString) {
   4     var dispIn = "";
   5     var dispOut = "";
   6     var i;
   7     for (i = 0; i < inString.length; ++i) {
   8         dispIn += " x" + inString.charCodeAt(i).toString(16);
   9     }
  10     if (outString.length == 0) {
  11         dispOut = "<empty>";
  12     } else {
  13         for (i = 0; i < outString.length; ++i) {
  14             dispOut += " x" + outString.charCodeAt(i).toString(16);
  15         }
  16     }
  17     dump("\"" + dispIn + "\" ==> \"" + dispOut + "\"\n");
  18 }
  19
  20 function error(inString, outString, msg){
  21     dumpStrings(inString, outString);
  22     do_throw("security risk: " + msg);
  23 }
  24
  25 function run_test() {
  26     var ScriptableUnicodeConverter =
  27         Components.Constructor("@mozilla.org/intl/scriptableunicodeconverter",
  28                                "nsIScriptableUnicodeConverter");
  29
  30     var converter = new ScriptableUnicodeConverter();
  31     converter.charset = charset;
  32
  33     var leadByte, trailByte;
  34     var inString;
  35     for (leadByte = 1; leadByte < 0x100; ++leadByte) {
  36         for (trailByte = 1; trailByte < 0x100; ++trailByte) {
  37             if (leadByte == 0x7e) {
  38                 if (trailByte == 0x7b ||
  39                     trailByte == 0xa  ||
  40                     trailByte == 0x7e) {
  41                     // ignore escape sequences:
  42                     //  ~{ (sets HZ-GB mode)
  43                     //  ~\n ( ==> \n)
  44                     //  ~~ ( ==> ~)
  45                     continue;
  46                 }
  47             }
  48             inString = String.fromCharCode(leadByte, trailByte, 65);
  49             var outString = converter.ConvertToUnicode(inString) +
  50                             converter.Finish();
  51             switch (outString.length) {
  52                 case 1:
  53                     error(inString, outString, "2 byte sequence eaten");
  54                     break;
  55                 case 2:
  56                     if (outString.charCodeAt(0) < 0x80 &&
  57                         outString.charCodeAt(1) < 0x80) {
  58                         error(inString, outString,
  59                               "2 byte sequence converted to 1 ASCII");
  60                     }
  61                     break;
  62                 case 3:
  63                     if (outString != inString &&
  64                         outString.charCodeAt(0) < 0x80 &&
  65                         outString.charCodeAt(1) < 0x80) {
  66                         error(inString, outString,
  67                               "2 byte sequence converted to 2 ASCII");
  68                     }
  69                     break;
  70             }
  71         }
  72     }
  73 }