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/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
"use strict";
var EXPORTED_SYMBOLS = ["EnigmailData"];
const SCRIPTABLEUNICODECONVERTER_CONTRACTID =
"@mozilla.org/intl/scriptableunicodeconverter";
const HEX_TABLE = "0123456789abcdef";
function converter(charset) {
let unicodeConv = Cc[SCRIPTABLEUNICODECONVERTER_CONTRACTID].getService(
Ci.nsIScriptableUnicodeConverter
);
unicodeConv.charset = charset || "utf-8";
return unicodeConv;
}
var EnigmailData = {
getUnicodeData(data) {
if (!data) {
throw new Error("EnigmailData.getUnicodeData invalid parameter");
}
// convert output to Unicode
var tmpStream = Cc["@mozilla.org/io/string-input-stream;1"].createInstance(
Ci.nsIStringInputStream
);
tmpStream.setData(data, data.length);
var inStream = Cc["@mozilla.org/scriptableinputstream;1"].createInstance(
Ci.nsIScriptableInputStream
);
inStream.init(tmpStream);
return inStream.read(tmpStream.available());
},
decodeQuotedPrintable(str) {
return unescape(
str.replace(/%/g, "=25").replace(new RegExp("=", "g"), "%")
);
},
decodeBase64(str) {
return atob(str.replace(/[\s\r\n]*/g, ""));
},
/***
* Encode a string in base64, with a max. line length of 72 characters
*/
encodeBase64(str) {
return btoa(str).replace(/(.{72})/g, "$1\r\n");
},
convertToUnicode(text, charset) {
if (!text || (charset && charset.toLowerCase() == "iso-8859-1")) {
return text;
}
// Encode plaintext
let buffer = Uint8Array.from(text, c => c.charCodeAt(0));
return new TextDecoder(charset).decode(buffer);
},
convertFromUnicode(text, charset) {
if (!text) {
return "";
}
let conv = converter(charset);
let result = conv.ConvertFromUnicode(text);
result += conv.Finish();
return result;
},
convertGpgToUnicode(text) {
if (typeof text === "string") {
text = text.replace(/\\x3a/gi, "\\e3A");
var a = text.search(/\\x[0-9a-fA-F]{2}/);
while (a >= 0) {
var ch = unescape("%" + text.substr(a + 2, 2));
var r = new RegExp("\\" + text.substr(a, 4));
text = text.replace(r, ch);
a = text.search(/\\x[0-9a-fA-F]{2}/);
}
text = EnigmailData.convertToUnicode(text, "utf-8").replace(
/\\e3A/g,
":"
);
}
return text;
},
pack(value, bytes) {
let str = "";
let mask = 0xff;
for (let j = 0; j < bytes; j++) {
str = String.fromCharCode((value & mask) >> (j * 8)) + str;
mask <<= 8;
}
return str;
},
unpack(str) {
let len = str.length;
let value = 0;
for (let j = 0; j < len; j++) {
value <<= 8;
value |= str.charCodeAt(j);
}
return value;
},
bytesToHex(str) {
let len = str.length;
let hex = "";
for (let j = 0; j < len; j++) {
let charCode = str.charCodeAt(j);
hex +=
HEX_TABLE.charAt((charCode & 0xf0) >> 4) +
HEX_TABLE.charAt(charCode & 0x0f);
}
return hex;
},
/**
* Convert an ArrayBuffer (or Uint8Array) object into a string
*/
arrayBufferToString(buffer) {
const MAXLEN = 102400;
let uArr = new Uint8Array(buffer);
let ret = "";
let len = buffer.byteLength;
for (let j = 0; j < Math.floor(len / MAXLEN) + 1; j++) {
ret += String.fromCharCode.apply(
null,
uArr.subarray(j * MAXLEN, (j + 1) * MAXLEN)
);
}
return ret;
},
};
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