1 /* ***** BEGIN LICENSE BLOCK ***** 2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 3 * 4 * The contents of this file are subject to the Mozilla Public License Version 5 * 1.1 (the "License"); you may not use this file except in compliance with 6 * the License. You may obtain a copy of the License at 7 * http://www.mozilla.org/MPL/ 8 * 9 * Software distributed under the License is distributed on an "AS IS" basis, 10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 11 * for the specific language governing rights and limitations under the 12 * License. 13 * 14 * The Original Code is Mozilla XML-RPC Client component. 15 * 16 * The Initial Developer of the Original Code is 17 * Digital Creations 2, Inc. 18 * Portions created by the Initial Developer are Copyright (C) 2000 19 * the Initial Developer. All Rights Reserved. 20 * 21 * Contributor(s): 22 * Martijn Pieters <mj (at) digicool.com> (original author) 23 * Samuel Sieb <samuel (at) sieb.net> 24 * 25 * Alternatively, the contents of this file may be used under the terms of 26 * either the GNU General Public License Version 2 or later (the "GPL"), or 27 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 28 * in which case the provisions of the GPL or the LGPL are applicable instead 29 * of those above. If you wish to allow use of your version of this file only 30 * under the terms of either the GPL or the LGPL, and not to allow others to 31 * use your version of this file under the terms of the MPL, indicate your 32 * decision by deleting the provisions above and replace them with the notice 33 * and other provisions required by the GPL or the LGPL. If you do not delete 34 * the provisions above, a recipient may use your version of this file under 35 * the terms of any one of the MPL, the GPL or the LGPL. 36 * 37 * ***** END LICENSE BLOCK ***** */ 38 39 // From: http://lxr.mozilla.org/mozilla/source/extensions/xml-rpc/src/nsXmlRpcClient.js#956 40 41 /* Convert data (an array of integers) to a Base64 string. */ 42 var toBase64Table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; 43 var base64Pad = '='; 44 45 function toBase64(data) { 46 var result = ''; 47 var length = data.length; 48 var i; 49 // Convert every three bytes to 4 ascii characters. 50 for (i = 0; i < (length - 2); i += 3) { 51 result += toBase64Table[data[i] >> 2]; 52 result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; 53 result += toBase64Table[((data[i+1] & 0x0f) << 2) + (data[i+2] >> 6)]; 54 result += toBase64Table[data[i+2] & 0x3f]; 55 } 56 57 // Convert the remaining 1 or 2 bytes, pad out to 4 characters. 58 if (length%3) { 59 i = length - (length%3); 60 result += toBase64Table[data[i] >> 2]; 61 if ((length%3) == 2) { 62 result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; 63 result += toBase64Table[(data[i+1] & 0x0f) << 2]; 64 result += base64Pad; 65 } else { 66 result += toBase64Table[(data[i] & 0x03) << 4]; 67 result += base64Pad + base64Pad; 68 } 69 } 70 71 return result; 72 } 73 74 /* Convert Base64 data to a string */ 75 var toBinaryTable = [ 76 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, 77 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, 78 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63, 79 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1, 80 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14, 81 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1, 82 -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40, 83 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1 84 ]; 85 86 function base64ToString(data) { 87 var result = ''; 88 var leftbits = 0; // number of bits decoded, but yet to be appended 89 var leftdata = 0; // bits decoded, but yet to be appended 90 91 // Convert one by one. 92 for (var i = 0; i < data.length; i++) { 93 var c = toBinaryTable[data.charCodeAt(i) & 0x7f]; 94 var padding = (data[i] == base64Pad); 95 // Skip illegal characters and whitespace 96 if (c == -1) continue; 97 98 // Collect data into leftdata, update bitcount 99 leftdata = (leftdata << 6) | c; 100 leftbits += 6; 101 102 // If we have 8 or more bits, append 8 bits to the result 103 if (leftbits >= 8) { 104 leftbits -= 8; 105 // Append if not padding. 106 if (!padding) 107 result += String.fromCharCode((leftdata >> leftbits) & 0xff); 108 leftdata &= (1 << leftbits) - 1; 109 } 110 } 111 112 // If there are any bits left, the base64 string was corrupted 113 if (leftbits) 114 throw Components.Exception('Corrupted base64 string'); 115 116 return result; 117 } 118 119 var str = ""; 120 121 for ( var i = 0; i < 8192; i++ ) 122 str += String.fromCharCode( (25 * Math.random()) + 97 ); 123 124 for ( var i = 8192; i <= 16384; i *= 2 ) { 125 126 var base64; 127 128 base64 = toBase64(str); 129 base64ToString(base64); 130 131 // Double the string 132 str += str; 133 } 134 135 toBinaryTable = null; 136
