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IE8 error 'Access Denied' #311

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Merged
merged 1 commit into from
Apr 3, 2013
Merged

IE8 error 'Access Denied' #311

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42 changes: 35 additions & 7 deletions jquery.form.js
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Original file line number Diff line number Diff line change
Expand Up @@ -406,9 +406,38 @@ $.fn.ajaxSubmit = function(options) {

var CLIENT_TIMEOUT_ABORT = 1;
var SERVER_ABORT = 2;

function getDoc(frame) {
var doc = frame.contentWindow ? frame.contentWindow.document : frame.contentDocument ? frame.contentDocument : frame.document;
/* it looks like contentWindow or contentDocument do not
* carry the protocol property in ie8, when running under ssl
* frame.document is the only valid response document, since
* the protocol is know but not on the other two objects. strange?
* "Same origin policy" http://en.wikipedia.org/wiki/Same_origin_policy
*/

var doc = null;

// IE8 cascading access check
try {
if (frame.contentWindow) {
doc = frame.contentWindow.document;
}
} catch(err) {
// IE8 access denied under ssl & missing protocol
log('cannot get iframe.contentWindow document: ' + err);
}

if (doc) { // successful getting content
return doc;
}

try { // simply checking may throw in ie8 under ssl or mismatched protocol
doc = frame.contentDocument ? frame.contentDocument : frame.document;
} catch(err) {
// last attempt
log('cannot get iframe.contentDocument: ' + err);
doc = frame.document;
}
return doc;
}

Expand Down Expand Up @@ -527,11 +556,10 @@ $.fn.ajaxSubmit = function(options) {
if (xhr.aborted || callbackProcessed) {
return;
}
try {
doc = getDoc(io);
}
catch(ex) {
log('cannot access response document: ', ex);

doc = getDoc(io);
if(!doc) {
log('cannot access response document');
e = SERVER_ABORT;
}
if (e === CLIENT_TIMEOUT_ABORT && xhr) {
Expand Down