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GUAC-875: Handle possibly-null key identifier.

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This commit is contained in:
Michael Jumper
2014-10-13 14:22:59 -07:00
parent c1e5822a19
commit 200021b27a
1 changed files with 6 additions and 1 deletions
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7
guacamole-common-js/src/main/webapp/modules/Keyboard.js
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@@ -640,10 +640,15 @@ Guacamole.Keyboard = function(element) {
* @param {String} keyIdentifier The legacy keyIdentifier from a * @param {String} keyIdentifier The legacy keyIdentifier from a
* browser keydown/keyup event. * browser keydown/keyup event.
* @returns {Boolean} true if the keyIdentifier looks sane, false if * @returns {Boolean} true if the keyIdentifier looks sane, false if
* the keyIdentifier appears incorrectly derived. * the keyIdentifier appears incorrectly derived or
* is missing entirely.
*/ */
function key_identifier_sane(keyCode, keyIdentifier) { function key_identifier_sane(keyCode, keyIdentifier) {
// Missing identifier is not sane
if (!keyIdentifier)
return false;
// Assume non-Unicode keyIdentifier values are sane // Assume non-Unicode keyIdentifier values are sane
var unicodePrefixLocation = keyIdentifier.indexOf("U+"); var unicodePrefixLocation = keyIdentifier.indexOf("U+");
if (unicodePrefixLocation === -1) if (unicodePrefixLocation === -1)