security warning in IE9 "Show all content" - facebook

I'm implementing the facebook Comments plugin on my site. Users get the warning "Show all content" in IE9
This other publisher using the same plugin and it does not bring up the warning.
Can some please help me with this?
Asking users to turn of the mixed content warning in their IE9 is not an option.

We were just looking at this today and our workaround for now was to include the Facebook Library over https (even when the page itself is viewed over http). Although not ideal it gets rid of the mixed content warnings in IE9 until they have fixed their bug.
That seems to be how it was accomplished at www.vg.no linked in the original question, the library is linked via https.
From their code:
<script src="https://connect.facebook.net/nb_NO/all.js"></script>

I have the same problem:
I have a page that's 100% http. But, the facebook javascript (which I call over http), is returning assets (.js, images) over https, which is generating security warnings for IE(9) users.
I have figured out it's the comment widget from Facebook (
Here's an example of a live page on http: with the error:
http://app.gophoto.com/p?id=10173&rkey=CD01891B287792415384&s=1&a=6940
Here's one of the assets that Facebook returns over HTTPS
https://s-static.ak.facebook.com/rsrc.php/v1/y8/r/7Htnnss1mJY.js
(I'm unable to comment (for some reason?) on Joel's answer. But, his suggestion to fetch the initial all.js over https on http sites does not actually work. I've tried it, and it also inherently looks incorrect since even the initial js fetch violates the mixing up of http & https content.)

Related

Facebook App Not Displayed Insecure Content Message In Chrome

I've been trying to get to bottom of this problem for a few hours but I can't seem to fix it, I've seen other questions similar to this and tried to use those to implement a fix for my problem but to no avail.
I've built a facebook contest canvas app which displays fine independantely but when I link it to a facebook page (as a link to a new contest) chrome no longer displays is and gives the following warning:
The page at 'https://www.facebook.com/contest/app_xxxxxxxx' was loaded over HTTPS, but ran insecure content from 'http://mydomain.com/': this content should also be loaded over HTTPS.
I've learned partly by trawling this site that the chrome security is fussier, and the app loads correctly, without errors in FireFox and IE but I can't find any resources that are loaded from a non https source.
I have been through with firebug checking in the net tab and checked that all of the loaded resources are using https (the png images, the jpg images, the css files and the jquery js files which are all hosted on the same server that has the certificate), I have even tried hosting the transitional dtd doc itself but nothing seems to make the warning go away and the app display correctly.
In the other similar questions it seems that there are either resources sourced from non-https sources or there are ssl switches used in the javascript library for facebook passed before the fb init.
The problem is that I am using only the php sdk not the js one (although I am using version 1.9 of jquery, hosted on my server) and I could find no similar ssl specific settings there.
If someone could give me a tip about how I could investigate further, what I might be missing or is familiar with this issue I'd be interested to hear about it.
Thanks a lot.
David
Facebook requires the app to come from https:// you need an ssl certificate on your server and to enable ssl. in the Facebook app settings change secure url to https://mydomain.com url
I did have a similar issue recently (but it only caused issues on IE10) and I resolved that by adding P3P header
header('P3P:CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT');
Found the solution!
In the facebook app settings, if the page tab url is specific to a page e.g. https://www.mydomain.com/index.php, chrome doesn't complain with the insecure content message but if you reference a directory the error is propogated. I found this confusing since the 'canvas' urls need to be directories.
I hope this answer will save someone a few hours! :)

Link to an insecure page from secure canvas page no longer working in Chrome

It looks like a recent Chrome update broke this by tightening mixed content (https/http) security policies, and I read that Firefox plans to do this too.
Here's the issue:
Say I set the Secure Canvas URL of my app to https://themediadudes.com/httpstest/
That page contains only a link to Google:
Google
When I view the app on Facebook and click the link, nothing happens. An error appears in the console:
[blocked] The page at https://apps.facebook.com/myappname/ ran insecure
content from http://www.google.com/.
I understand that having insecure scripts/stylesheets etc. on an https page isn't allowed, but a simple link to a different website shouldn't be blocked right?. I assume Facebook is running some scripts which do something with the page before sending the user there? Which causes the error.
If I set the target of the link to _top or _blank it works.
Ideally I want to be able to use a javascript window.location to send the user to this insecure URL, or header('Location: blah'); in PHP. But neither of those work either. And it looks like this is a bigger problem than that if even a simple link to an insecure URL doesn't work.
I thought it may be caused by whatever makes the 'fluid' canvas width and canvas height settings work. But I tried setting both width and height to fixed and the problem still happens.
Does anybody have a solution or workaround, or can anybody at least shed some more light on this?
Thanks
I've been struggling with a similar issue and the answer seems to be that it is not possible at all to reference any non-https resources from within your page tab app. Of course if a google link is all you require then that is simply resolved (as google has a https version of course) but referencing external non-https sites will always turn up this warning/block in chrome
Additionally, I should add that I have noticed that the 'page tab URL' section requires a url to a particular page, whereas the 'canvas URL' needs to link to a directory. This does not seem to be documented and will also give the insecure content message in chrome and prevent the page tab app from loading

Why does Object debugger say my URL is a facebook URL and isn't "scrapable"

In trying to create an "object" page for my first facebook app, I've run into some difficulty. I followed Facebook's Open Graph Tutorial nearly exactly.
After creating an "object" html page with the appropriate <meta property="og:... tags I tried running the URL through the Debugger Tool as suggested in the tutorial but I'm given the following error:
"Facebook URLs aren't scrapable by this Debugger. Try your own."
This page is in the same directory on my company's linux box as the canvas page, and is certainly not a "Facebook URL". If it matters, I'm using an IP instead of a domain name: xx.x.x.xxx/app/obj.html
...
I continued the tutorial anyway, but ultimately it does not seem to want to post a new action/object (is this even right?). I did however manage to get something to work, as in the app timeline view I apparently actioned one of those objects a couple hours ago. I assume this happened when I was pasting curl POST commands into the terminal.
I'm pretty new to the whole open graph, and facebook APIs, etc., so I'm probably operating under false assumptions of some sort, and I've been all over trying different things, but this error seems pretty bizarre to me and I can't seem to resolve it.
UPDATE
I just took the object page and put it on my own personal shared hosting acct. The debugger worked (inexplicably) fine on it, but I couldn't go too far since it's a different domain than the one authorized by my app.
Make sure og:url inside your html page does not point to facebook.
Also, make sure to look at the open graph protocol page (to see you formatted the og tags correctly.
Also, make sure the page is accessible to everyone, not just yourself.
Without knowing the URL it's hard to be sure, but it's most likely that your URL is either including a og:url tag pointing to a facebook.com address, or a HTTP 301/302 redirect to Facebook instead

Silent failure loading page application in iframe over https

Problem
I have an application driving a tab on a client's page. The application works correctly if the user has not enabled FB's "secure browsing" feature. If attempting to view over HTTPS, the iframe doesn't even appear (no errors, no mixed-content warnings). When correctly loading over HTTP, the div with the id "pagelet_app_runner" has an iframe inserted into it and the application content is loaded inside there. Over HTTPS, this div remains empty and the iframe is not inserted into the page. There are no Javascript errors appearing in Firebug or Chrome's equivalent console.
Why I'm Asking Here
The host has a valid SSL certificate and there is no 'mixed content' at the URL in question. I can successfully view the content over HTTP or HTTPS by visiting the URL directly, and I can do the same by visiting apps.facebook.com/canvasURL/tabURL. It is only when attempting to view within a Page Tab that the HTTPS load fails as described above. My application is configured with both regular and secure canvas and tab URLs.
Attempted Debugging
I've recorded some sessions with Charles but since the iframe isn't being inserted into the page, I think I'm coming at the problem after it's already occured. I'm no Charles expert so happy to be corrected here.
Apache isn't seeing any request (in either regular or ssl logs) for the affected loads. non-SSL loads come through as expected in access_log.
Plea for Help
I'm out of ideas for debugging this. Does anybody have any suggestions? What really obvious and stupid mistake might I have made? :)
edit: nicer formatting
Your app canvas URL is https://skinnycomp.nextstudio.com.au/skinnycowcomps/ , which send 404 error to Facebook proxy (request is going through proxy when viewing app via tab), also when viewing your app via apps (https://apps.facebook.com/122381834451561/), again 404... maybe Facebook proxy is ignoring 404 and posting blank...
Try changing canvas URL to https://skinnycomp.nextstudio.com.au/skinnycowcomps/tab, also you can check if your app is accessed via page tab, in signed_request there should be page_id...
23:51:15.379[549ms][total 1667ms] Status: 404[Not Found]
GET https://skinnycomp.nextstudio.com.au/skinnycowcomps/
This is a real longshot since I'm sure you've triple checked all the settings, but the blank page can happen if an invalid url is specified in the Page Tab URL field in the app settings. Since it only happens on https, it would imply something specifically with the Secure Page Tab URL entry. It might be worth checking that again, and maybe even re-saving it or changing it to something else to see if it helps.
I was using relative URLs for the regular and secure tab URL fields. From memory relative URLs here were mandatory at some point in the past. It appears now that a relative URL will still work for HTTP but not for HTTPs. Fix: absolute URLs. Hopefully FB update their field validation to match what's required too.

Why does IE8 render my site then immediately redirect to its internal 404?

I administer a site, hosted on Yahoo! hosting, which has recently shown a strange behavior: when you visit in IE8, the page loads and is rendered normally, then as soon as it finishes rendering, the browser switches to show its local/internal 404 page. The address bar still shows the site URL.
When I view the site in (as far as I can tell) the same state on my local Apache server, it doesn't do this. This leads me to suspect it may have something to do with server configuration and response headers, but I don't know what that might be.
Is anyone familiar with this behavior?
I experienced this behavior when using a .htc hack to provide artificial CSS border-radius support.
I'm not sure what is causing that issue specifically, but you could use a packet capture utility like Wireshark or Fiddler2 to investigate the issue further. Otherwise, it would be helpful if you were to post a link to the site.
Your page contains JavaScript code which modifies the DOM while the page is still loading.
See other SO questions, such as here and here.
Solution: place your DOM manipulation code into < body onload> or jquery.ready() to execute after page loading is complete.