1 files changed, 156 insertions, 0 deletions
diff --git a/comm/mail/extensions/openpgp/content/modules/data.jsm b/comm/mail/extensions/openpgp/content/modules/data.jsm
new file mode 100644
index 0000000000..0dd5cf451f
--- /dev/null
+++ b/comm/mail/extensions/openpgp/content/modules/data.jsm
@@ -0,0 +1,156 @@
+/*
+ * 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;
+  },
+};