Add a load of crypto functions for future use.

[irc/quakenet/qwebirc.git] / js / jslib.js

diff --git a/js/jslib.js b/js/jslib.js
index 62cddef66a436f6ae69f1d0a01002da6ad2a5938..8b3c2cf5ff0c30228963f0fbc0aa3b82bc6fe0f3 100644 (file)
--- a/js/jslib.js
+++ b/js/jslib.js
@@ -203,3 +203,112 @@ qwebirc.util.getEnclosedWord = function(text, position) {
 String.prototype.startsWith = function(what) {
   return this.substring(0, what.length) == what;
 }
+
+/* NOT cryptographically secure! */
+qwebirc.util.randHexString = function(numBytes) {
+  var getByte = function() {
+    return (((1+Math.random())*0x100)|0).toString(16).substring(1);
+  };
+  
+  var l = [];
+  for(var i=0;i<numBytes;i++)
+    l.push(getByte());
+  
+  return l.join("");
+}
+
+qwebirc.util.importJS = function(name, watchFor, onload) {
+  var script = document.createElement("script");
+  script.type = "text/javascript";
+  script.src = name;
+  
+  if(Browser.Engine.trident) {
+    /* HORRID */
+    var checkFn = function() {
+      if(eval("typeof " + watchFor) != "undefined") {
+        onload();
+      } else {
+        checkFn.delay(10);
+      }
+    }
+    checkFn();
+  } else {
+    script.onload = onload;
+  }
+  document.getElementsByTagName("head")[0].appendChild(script);
+}
+
+qwebirc.util.createInput = function(type, parent, name, selected) {
+  var r;
+  if(Browser.Engine.trident) {
+    if(name) {
+      name = " name=\"" + escape(name) + "\"";
+    } else {
+      name = "";
+    }
+    r = $(document.createElement("<input type=\"" + type + "\"" + name + " " + (selected?" checked":"") + "/>"));
+  } else {    
+    r = new Element("input");
+    r.type = type;
+    if(name)
+      r.name = name;
+      
+    if(selected)
+      r.checked = true;
+  }
+    
+  parent.appendChild(r);
+  return r;
+}
+
+/* From: www.webtoolkit.info */
+qwebirc.util.b64Table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+qwebirc.util.b64Encode = function(data) {
+  var output = [];
+  var table = qwebirc.util.b64Table;
+  for(i=0;i<data.length;) {
+    var chr1 = data.charCodeAt(i++);
+    var chr2 = data.charCodeAt(i++);
+    var chr3 = data.charCodeAt(i++);
+
+    var enc1 = chr1 >> 2;
+    var enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
+    var enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
+    var enc4 = chr3 & 63;
+
+    if(isNaN(chr2)) {
+      enc3 = enc4 = 64;
+    } else if(isNaN(chr3)) {
+      enc4 = 64;
+    }
+
+    output.push(table.charAt(enc1) + table.charAt(enc2) + table.charAt(enc3) + table.charAt(enc4));
+  }
+  return output.join("");
+}
+
+/* From: www.webtoolkit.info */
+qwebirc.util.b64Decode = function(data) {
+  data = data.replace(/[^A-Za-z0-9\+\/\=]/g, "");
+
+  var output = [];
+  var table = qwebirc.util.b64Table;
+  for(var i=0;i<data.length;) {
+    var enc1 = table.indexOf(data.charAt(i++));
+    var enc2 = table.indexOf(data.charAt(i++));
+    var enc3 = table.indexOf(data.charAt(i++));
+    var enc4 = table.indexOf(data.charAt(i++));
+
+    var chr1 = (enc1 << 2) | (enc2 >> 4);
+    var chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
+    var chr3 = ((enc3 & 3) << 6) | enc4;
+
+    output.push(String.fromCharCode(chr1));
+    if (enc3 != 64)
+      output.push(String.fromCharCode(chr2));
+    if (enc4 != 64)
+      output.push(String.fromCharCode(chr3));
+  }
+
+  return output.join("");
+}