mirror of
https://github.com/YunoHost-Apps/hubzilla_ynh.git
synced 2024-09-03 19:26:21 +02:00
294 lines
8.6 KiB
JavaScript
294 lines
8.6 KiB
JavaScript
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function str_rot13 (str) {
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// http://kevin.vanzonneveld.net
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// + original by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
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// + improved by: Ates Goral (http://magnetiq.com)
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// + bugfixed by: Onno Marsman
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// + improved by: Rafa? Kukawski (http://blog.kukawski.pl)
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// * example 1: str_rot13('Kevin van Zonneveld');
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// * returns 1: 'Xriva ina Mbaariryq'
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// * example 2: str_rot13('Xriva ina Mbaariryq');
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// * returns 2: 'Kevin van Zonneveld'
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// * example 3: str_rot13(33);
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// * returns 3: '33'
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return (str + '').replace(/[a-z]/gi, function (s) {
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return String.fromCharCode(s.charCodeAt(0) + (s.toLowerCase() < 'n' ? 13 : -13));
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});
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}
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// Arrays for pluggable encryptors/decryptors
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var red_encryptors = new Array();
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var red_decryptors = new Array();
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// We probably just want the element where the text is and find it ourself. e.g. if
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// there is highlighted text use it, otherwise use the entire text.
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// So the third element may be useless. Fix also in view/tpl/jot.tpl before
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// adding to all the editor templates and enabling the feature
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// Should probably do some input sanitising and dealing with bbcode, hiding key text, and displaying
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// results in a lightbox and/or popup form are left as an exercise for the reader.
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function red_encrypt(alg, elem,text) {
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var enc_text = '';
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var newdiv = '';
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if(typeof tinyMCE !== "undefined")
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tinyMCE.triggerSave(false,true);
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var text = $(elem).val();
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// key and hint need to be localised
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var passphrase = prompt(aStr['passphrase']);
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// let the user cancel this dialogue
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if (passphrase == null)
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return false;
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var enc_key = bin2hex(passphrase);
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// If you don't provide a key you get rot13, which doesn't need a key
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// but consequently isn't secure.
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if(! enc_key)
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alg = 'rot13';
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if((alg == 'rot13') || (alg == 'triple-rot13'))
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newdiv = "[crypt alg='rot13']" + str_rot13(text) + '[/crypt]';
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if(alg == 'aes256') {
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// This is the prompt we're going to use when the receiver tries to open it.
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// Maybe "Grandma's maiden name" or "our secret place" or something.
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var enc_hint = bin2hex(prompt(aStr['passhint']));
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enc_text = CryptoJS.AES.encrypt(text,enc_key);
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encrypted = enc_text.toString();
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newdiv = "[crypt alg='aes256' hint='" + enc_hint + "']" + encrypted + '[/crypt]';
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}
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if(alg == 'rabbit') {
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// This is the prompt we're going to use when the receiver tries to open it.
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// Maybe "Grandma's maiden name" or "our secret place" or something.
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var enc_hint = bin2hex(prompt(aStr['passhint']));
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enc_text = CryptoJS.Rabbit.encrypt(text,enc_key);
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encrypted = enc_text.toString();
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newdiv = "[crypt alg='rabbit' hint='" + enc_hint + "']" + encrypted + '[/crypt]';
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}
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if(alg == '3des') {
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// This is the prompt we're going to use when the receiver tries to open it.
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// Maybe "Grandma's maiden name" or "our secret place" or something.
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var enc_hint = bin2hex(prompt(aStr['passhint']));
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enc_text = CryptoJS.TripleDES.encrypt(text,enc_key);
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encrypted = enc_text.toString();
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newdiv = "[crypt alg='3des' hint='" + enc_hint + "']" + encrypted + '[/crypt]';
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}
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if((red_encryptors.length) && (! newdiv.length)) {
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for(var i = 0; i < red_encryptors.length; i ++) {
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newdiv = red_encryptors[i](alg,text);
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if(newdiv.length)
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break;
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}
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}
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enc_key = '';
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// alert(newdiv);
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// This might be a comment box on a page with a tinymce editor
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// so check if there is a tinymce editor but also check the display
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// property of our source element - because a tinymce instance
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// will have display "none". If a normal textarea such as in a comment
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// box has display "none" you wouldn't be able to type in it.
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if($(elem).css('display') == 'none' && typeof tinyMCE !== "undefined") {
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tinyMCE.activeEditor.setContent(newdiv);
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}
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else {
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$(elem).val(newdiv);
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}
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// textarea = document.getElementById(elem);
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// if (document.selection) {
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// textarea.focus();
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// selected = document.selection.createRange();
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// selected.text = newdiv;
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// } else if (textarea.selectionStart || textarea.selectionStart == "0") {
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// var start = textarea.selectionStart;
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// var end = textarea.selectionEnd;
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// textarea.value = textarea.value.substring(0, start) + newdiv + textarea.value.substring(end, textarea.value.length);
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// }
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}
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function red_decrypt(alg,hint,text,elem) {
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var dec_text = '';
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if(alg == 'rot13' || alg == 'triple-rot13')
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dec_text = str_rot13(text);
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else {
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var enc_key = bin2hex(prompt((hint.length) ? hex2bin(hint) : aStr['passphrase']));
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}
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if(alg == 'aes256') {
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dec_text = CryptoJS.AES.decrypt(text,enc_key);
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}
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if(alg == 'rabbit') {
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dec_text = CryptoJS.Rabbit.decrypt(text,enc_key);
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}
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if(alg == '3des') {
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dec_text = CryptoJS.TripleDES.decrypt(text,enc_key);
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}
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if((red_decryptors.length) && (! dec_text.length)) {
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for(var i = 0; i < red_decryptors.length; i ++) {
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dec_text = red_decryptors[i](alg,text,enc_key);
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if(dec_text.length)
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break;
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}
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}
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enc_key = '';
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// Not sure whether to drop this back in the conversation display.
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// It probably needs a lightbox or popup window because any conversation
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// updates could
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// wipe out the text and make you re-enter the key if it was in the
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// conversation. For now we do that so you can read it.
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var dec_result = dec_text.toString(CryptoJS.enc.Utf8);
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delete dec_text;
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// incorrect decryptions *usually* but don't always have zero length
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// If the person typo'd let them try again without reloading the page
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// otherwise they'll have no "padlock" to click to try again.
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if(dec_result.length) {
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$(elem).html(b2h(dec_result));
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dec_result = '';
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}
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}
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function base64_encode (data) {
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// http://kevin.vanzonneveld.net
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// + original by: Tyler Akins (http://rumkin.com)
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// + improved by: Bayron Guevara
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// + improved by: Thunder.m
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// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
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// + bugfixed by: Pellentesque Malesuada
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// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
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// + improved by: Rafa? Kukawski (http://kukawski.pl)
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// * example 1: base64_encode('Kevin van Zonneveld');
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// * returns 1: 'S2V2aW4gdmFuIFpvbm5ldmVsZA=='
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// mozilla has this native
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// - but breaks in 2.0.0.12!
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//if (typeof this.window['btoa'] === 'function') {
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// return btoa(data);
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//}
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var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
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var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
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ac = 0,
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enc = "",
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tmp_arr = [];
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if (!data) {
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return data;
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}
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do { // pack three octets into four hexets
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o1 = data.charCodeAt(i++);
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o2 = data.charCodeAt(i++);
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o3 = data.charCodeAt(i++);
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bits = o1 << 16 | o2 << 8 | o3;
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h1 = bits >> 18 & 0x3f;
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h2 = bits >> 12 & 0x3f;
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h3 = bits >> 6 & 0x3f;
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h4 = bits & 0x3f;
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// use hexets to index into b64, and append result to encoded string
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tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
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} while (i < data.length);
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enc = tmp_arr.join('');
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var r = data.length % 3;
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return (r ? enc.slice(0, r - 3) : enc) + '==='.slice(r || 3);
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}
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function base64_decode (data) {
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// http://kevin.vanzonneveld.net
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// + original by: Tyler Akins (http://rumkin.com)
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// + improved by: Thunder.m
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// + input by: Aman Gupta
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// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
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// + bugfixed by: Onno Marsman
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// + bugfixed by: Pellentesque Malesuada
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// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
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// + input by: Brett Zamir (http://brett-zamir.me)
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// + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
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// * example 1: base64_decode('S2V2aW4gdmFuIFpvbm5ldmVsZA==');
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// * returns 1: 'Kevin van Zonneveld'
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// mozilla has this native
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// - but breaks in 2.0.0.12!
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//if (typeof this.window['atob'] === 'function') {
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// return atob(data);
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//}
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var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
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var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
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ac = 0,
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dec = "",
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tmp_arr = [];
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if (!data) {
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return data;
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}
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data += '';
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do { // unpack four hexets into three octets using index points in b64
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h1 = b64.indexOf(data.charAt(i++));
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h2 = b64.indexOf(data.charAt(i++));
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h3 = b64.indexOf(data.charAt(i++));
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h4 = b64.indexOf(data.charAt(i++));
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bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;
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o1 = bits >> 16 & 0xff;
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o2 = bits >> 8 & 0xff;
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o3 = bits & 0xff;
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if (h3 == 64) {
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tmp_arr[ac++] = String.fromCharCode(o1);
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} else if (h4 == 64) {
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tmp_arr[ac++] = String.fromCharCode(o1, o2);
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} else {
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tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
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}
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} while (i < data.length);
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dec = tmp_arr.join('');
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return dec;
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}
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