I have created a custom Protocol myapp: just like mailto: which opens one exe at client side using JavaScript. So, whenever that JavaScript I call there opens a dialog box asking for selecting the application through which I want to open.
I just wanted to set the default application through which it opens in the code and doesn't open that dialog box. I know that I can manually change from always ask to set default in setting of Mozilla Browser, but I wanted it through Code. so that user does not have to do any thing.
Is it possible? If yes, please guide me how I can achieve this.
You cannot set such settings from an unprivileged webpage, that would be a huge security issue.
What you can ask the user from a webpage is to register a web application as a custom protocol handler, but not an exe. However, if that exe is written by yourself, you might just register it as a protocol handler within the OS.
Related
Is it possible to create a link that the user clicks (say in an email) which opens a Chrome extension that's already installed?
Or, put it in another way, is it possible to develop a Chrome extension that handles how a link is shown (e.g. inside Gmail.com or other sites), that whenever the user clicks it, the extension shows up instead of the user being directed to a site?
I've come across articles talking about custom protocols:
Custom protocol handler in chrome
But what if the extension is not installed, how do you fall back to HTTP?
http://mywebsite.com/somevalue
This could easily be done with a webNavigation.onBeforeNavigate listener which listens for a specific URL. When the URL is encountered, it can cause a specific page within the extension to be opened instead.
Quickly prototyping this, the code could look something like (untested, may have errors):
chrome.webNavigation.onBeforeNavigate.addListener(function(details){
chrome.tabs.update(details.tabId,{url:chrome.runtime.getURL('/thePageIWant.html'});
},{url:[
{urlEquals:'http:/www.domain-for-my-extension.com/invokeMyExtension.html'}
]});
References:
chrome.webNavigation.onBeforeNavigate
chrome.tabs.update()
runtime.getURL()
Is there a way I can start a standalone GUI program from within my javascript code? What I intend is to display a button when in a particular website, which when clicked, opens up my GUI program and passes the URL to it, kinda like Internet Download Manager(IDM) does it.
If your app registers as a handler for specific URL schemes, then opening a link using one of those URL schemes should do.
For instance, if your app says it can handle the myscheme scheme, then opening myscheme:somedata URL should trigger opening that app.
I was just looking at this stackoverflow question: Display web browser settings
And that helps.
But, I'm curious if I can detect certain IE specific settings. I'm thinking some of the stuff in the Advanced Tab (e.g. Is 'Enable Integrated Windows Authentication' on)?
Or that our site was added as a Trusted Site? And within the Trusted Site settings, "Atomatic logon with current user name and password" is set?
I don't want to change them (I get that would be a huge issue that could be exploited). I just want to be able to present to the User:
"Hey, you need these couple of settings checked or unchecked for the site to work properly. Do this: a, b, c ... or Contact your Administrator".
Is this possible?
I don't think you can query these settings from within a web site. Being able to do so might introduce security holes.
I'm sure some settings can be determined by using circumstantial evidence (like if a JavaScript doesn't execute, scripting is probably disabled). But I don't think there is a proper API to poll every setting; I guess the best you can do is serve the user some advice on what to look for. (like, "The xyz symbol in the bottom right bar should show a green checkmark like so.... the abc checkbox in the options dialog should be unchecked... etc")
You can't check the settings directly, but you could test the functionality instead. If you attempt to authenticate with the server and find out you don't have their credentials passed in properly, you know it's not configured right. At this point you could show them your information about how to connect to the site. This would be a better solution anyways, as you're better off testing for features rather than specific settings.
To distill your question down, it looks like you're trying to find out whether IE is configured to automatically send NTLM credentials to your server.
Unfortunately, there's no way to cleanly feature-detect this. My initial thought was to put a JavaScript file in a protected directory that simply set a global variable, and link to that script in the <head>. (<script src="protected-dir/test.js"></script> – protected-dir would be configured only for integrated auth with anonymous auth off.) If the script loads, the variable is set; and if it fails, the variable obviously isn't. Another script on the page could check the variable and show a message if it's not set.
This works flawlessly when everything is configured correctly on a client, but when auto login is off, this causes an ugly 401 dialog to pop up, which is clearly no good. Additionally, a XHR request isn't the answer since the spec specifically says the browser should ask for credentials if it gets a 401.
Sadly, I don't think there's a way to automatically determine if auto login is enabled without causing the 401 dialog to pop up.
I'd like to be able to create a "HTML link" that the user can click on and be taken to an URL (location) specified either in the browser (preferences?) or system environment.
Is this possible? Any suggestions on how to do it please?
For example, it may look something like this (or alternatively it could be a clickable image or even a submit button):
"Click here to go to your preferred news site."
When the user clicks on "here" the browser would go to a location specified not in the HTML but somehow in the browser (preferences?) or some system environment variable (OS specific etc.)
Of course, the user would have to set up this preference or environment variable (or have some local application or better Web page that could set it - when approved by the user).
This is sort of like most OS these days allow you to set "preferred app" for image processing or playing media. I would like to set preferred Web sites for certain tasks.
Thanks for any suggestions. Hopefully with Javascript and modern browsers and perhaps HTML 5 something like this is possible.
Update: I would like the user to be able to set this once for themselves (e.g. in the browser or the OS) and then for this to work on any site they go to that includes the same "abstract link".
So Web site A and web site B could both an "abstract link" to go to the user's preferred news site and when clicked on the browser would go to the site specified in the browser or the OS). So it cannot be site-specific (like a cookie?).
Cheers,
Ashley.
The general process would be something like this:
Set a cookie using js. Then create a function that retrieves the cookie and redirects. Then trigger an onclick or an onmousedown even like onmousedown='retriveAndRedirect()'
Check out there resources.
QuircksMode's JavaScript Cookies Reference.
W3School's JavaScript Cookies Reference.
UPDATE:
I see what you're trying to do here. In order for your redirection to work from any site, that site has to host your redirection and preference method somehow using js, html, serverside script, etc...
Your other option would be to build a plugin which the user would have to download, that way you wouln'd need any site host your redirection and preference methods for you.
As far as your link retrieval methods go you can either use cookies, or store the links in a database and then call on trigger.
You can store the preferred web site in a cookie. Simple version using the readCookie function from there:
Click to go to your preferred news site
Is there any way to programatically disable cookies being created by a page displayed inside of a frame/iframe? Or to generalise further, is it possible to programatically disable javascript running on such a page?
Thanks,
DLiKS
with iframe sandbox attribute (html5) it will be possible (implemented in chrome)
http://dev.w3.org/html5/spec/Overview.html#attr-iframe-sandbox
NullUserException already answered what you can do today without browser support
The only way you could change that for an external website you have no control over is to retrieve the pages using a server-side script, filter the input and display it to the user (ie: act as a proxy).
You just can't modify sites out of your domain (or subdomain - it might depend on the browser) using J/S for security reasons.
If you mean that you want to change the settings of the browser by code in a web page, then no, this is not possible (and if it were possible, it's a huge security breach and all alarms would go off).
You may surpass this, however, by writing a plugin, but then each user must first download the plugin. You can also request higher priviledges, but it'll depend on the browser whether you can change any user settings.
If you mean that you want to write a script on every pc in your company to disable JS + cookies for certain pages, you can write plugins and install them everywhere, or use a proxy (as has been suggested by others) and filter the pages. If it is just for debugging a self-made page, use the Developer Toolbar for the various browsers, that can turn JS/Cookies on and off.
Why would you want to do such a thing? If you want to disable cookies, you disable it on your own page by simply not using cookies. The same goes for javascript: don't add it to your page and you've disabled it on your page.
Note: if any page would change anything of the user settings of the browser, your page will probably be blacklisted by Google, most virus scanners and fishing prevention tools.