diff options
author | Christian Beier <dontmind@freeshell.org> | 2011-11-09 20:00:16 +0100 |
---|---|---|
committer | Christian Beier <dontmind@freeshell.org> | 2011-11-09 20:00:16 +0100 |
commit | faadd484489efddd182d6d0df43d8ecfdbff29ff (patch) | |
tree | 9c098fca3bd1280a2166259650695d172d049aee /webclients/novnc/include/base64.js | |
parent | 7cb0e4a9a95886300268e1bff1e72b4c18f1b762 (diff) | |
download | libtdevnc-faadd484489efddd182d6d0df43d8ecfdbff29ff.tar.gz libtdevnc-faadd484489efddd182d6d0df43d8ecfdbff29ff.zip |
Rename 'classes' dir to 'webclients'.
Diffstat (limited to 'webclients/novnc/include/base64.js')
-rw-r--r-- | webclients/novnc/include/base64.js | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/webclients/novnc/include/base64.js b/webclients/novnc/include/base64.js new file mode 100644 index 0000000..c68b33a --- /dev/null +++ b/webclients/novnc/include/base64.js @@ -0,0 +1,147 @@ +/* + * Modified from: + * http://lxr.mozilla.org/mozilla/source/extensions/xml-rpc/src/nsXmlRpcClient.js#956 + */ + +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla XML-RPC Client component. + * + * The Initial Developer of the Original Code is + * Digital Creations 2, Inc. + * Portions created by the Initial Developer are Copyright (C) 2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Martijn Pieters <mj@digicool.com> (original author) + * Samuel Sieb <samuel@sieb.net> + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +/*jslint white: false, bitwise: false, plusplus: false */ +/*global console */ + +var Base64 = { + +/* Convert data (an array of integers) to a Base64 string. */ +toBase64Table : 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/', +base64Pad : '=', + +encode: function (data) { + "use strict"; + var result = '', + chrTable = Base64.toBase64Table.split(''), + pad = Base64.base64Pad, + length = data.length, + i; + // Convert every three bytes to 4 ascii characters. + for (i = 0; i < (length - 2); i += 3) { + result += chrTable[data[i] >> 2]; + result += chrTable[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; + result += chrTable[((data[i+1] & 0x0f) << 2) + (data[i+2] >> 6)]; + result += chrTable[data[i+2] & 0x3f]; + } + + // Convert the remaining 1 or 2 bytes, pad out to 4 characters. + if (length%3) { + i = length - (length%3); + result += chrTable[data[i] >> 2]; + if ((length%3) === 2) { + result += chrTable[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; + result += chrTable[(data[i+1] & 0x0f) << 2]; + result += pad; + } else { + result += chrTable[(data[i] & 0x03) << 4]; + result += pad + pad; + } + } + + return result; +}, + +/* Convert Base64 data to a string */ +toBinaryTable : [ + -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, + -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, + -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63, + 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1, + -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14, + 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1, + -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40, + 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1 +], + +decode: function (data, offset) { + "use strict"; + offset = typeof(offset) !== 'undefined' ? offset : 0; + var binTable = Base64.toBinaryTable, + pad = Base64.base64Pad, + result, result_length, idx, i, c, padding, + leftbits = 0, // number of bits decoded, but yet to be appended + leftdata = 0, // bits decoded, but yet to be appended + data_length = data.indexOf('=') - offset; + + if (data_length < 0) { data_length = data.length - offset; } + + /* Every four characters is 3 resulting numbers */ + result_length = (data_length >> 2) * 3 + Math.floor((data_length%4)/1.5); + result = new Array(result_length); + + // Convert one by one. + for (idx = 0, i = offset; i < data.length; i++) { + c = binTable[data.charCodeAt(i) & 0x7f]; + padding = (data.charAt(i) === pad); + // Skip illegal characters and whitespace + if (c === -1) { + console.error("Illegal character '" + data.charCodeAt(i) + "'"); + continue; + } + + // Collect data into leftdata, update bitcount + leftdata = (leftdata << 6) | c; + leftbits += 6; + + // If we have 8 or more bits, append 8 bits to the result + if (leftbits >= 8) { + leftbits -= 8; + // Append if not padding. + if (!padding) { + result[idx++] = (leftdata >> leftbits) & 0xff; + } + leftdata &= (1 << leftbits) - 1; + } + } + + // If there are any bits left, the base64 string was corrupted + if (leftbits) { + throw {name: 'Base64-Error', + message: 'Corrupted base64 string'}; + } + + return result; +} + +}; /* End of Base64 namespace */ |