firefox-addon/inject.js at master · sociocaster/firefox-addon · GitHub

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/**
	* This is a list of domains that have a strict Content Security Policy
	* This is a temporary work around while we figure out a long term solution
*/
var CSPWhitelist = [
	'twitter.com',
	'github.com',
	'gist.github.com',
	'education.github.com',
	'medium.com',
	'www.npmjs.org',
	'www.npmjs.com',
	'www.flickr.com',
	'www.oculus.com',
	'letsecure.me'
];


var injectPoster = function(link,picture,message){


	var domain = window.location.hostname;
	if(CSPWhitelist.indexOf(domain) > -1){

		openPopup(link,picture,message)

		}else{

		var shouldContinue = ensureOnlyOneOverlayOpen()
		if(shouldContinue){

			var iframe = document.createElement('iframe');
			// Must be declared at web_accessible_resources in manifest.json

			if(link !== '')
			iframe.src = 'https://sociocaster.com/external?open=extension&link='+encodeURIComponent(link)+'&message='+encodeURIComponent(document.title);
			else if(picture !== '')
			iframe.src = 'https://sociocaster.com/external?open=extension&picture='+encodeURIComponent(picture)	+'&message='+encodeURIComponent(message);
			else if(message !== '')
			iframe.src = 'https://sociocaster.com/external?open=extension&message='+encodeURIComponent(message);

			iframe.id = 'sociocaster-overlay'
			// Some styles for a fancy sidebar
			iframe.style.cssText = 'border: none !important; height: 100% !important; width: 100% !important; position: fixed !important; z-index: 2147483646 !important; top: 0px !important; left: 0px !important; display: block !important; max-width: 100% !important; max-height: 100% !important; padding: 0px !important; background-image: none; background-attachment: initial !important; background-color: rgba(245, 245, 245, 0.741176) !important; background-size: 40px !important; background-origin: initial !important; background-clip: initial !important; background-position: 50% 50% !important; background-repeat: no-repeat !important;';
			document.body.appendChild(iframe);

		}

	}
}

function ensureOnlyOneOverlayOpen() {
	// State can't be saved in this script, since it gets re-executed multiple times by some browsers
	// (e.g. Firefox), so we rely on the DOM instead.
	var isOverlayOpen = function() { return !!$('#sociocaster-overlay').length };

	if (!isOverlayOpen()) return true;

	// If the open intent comes from somewhere else, discard any hidden overlay and open a new one
	closePopup();

	return true;
};


function closePopup() {
    $('#sociocaster-overlay').remove();

    window.focus();
}

function openPopup(link,picture,message){
	var url = ''
	if(link !== '')
	url = 'https://sociocaster.com/external?open=extension&link='+encodeURIComponent(link)+'&message='+encodeURIComponent(document.title);
	else if(picture !== '')
	url = 'https://sociocaster.com/external?open=extension&picture='+encodeURIComponent(picture)	+'&message='+encodeURIComponent(message);
	else if(message !== '')
	url = 'https://sociocaster.com/external?open=extension&message='+encodeURIComponent(message);


	window.open(url, 'sociocaster_sharer')


}


chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse) {
    //console.log(sender.tab ?
	//"from a content script:" + sender.tab.url :
	//"from the extension");
	//console.log(sender)
    if (request.action == "open-sociocaster-overlay"){
		injectPoster(request.tab.url,'','');
	}
	sendResponse({farewell: "goodbye"});
}
);


window.addEventListener("message", receiveMessage, false);
function receiveMessage(event)
{

	if(event.data == 'sociocaster_post_creator_closed'){
		closePopup();
		chrome.runtime.sendMessage({action: "close-sociocaster-overlay"}, function(response) {
			//console.log(response.farewell);
		});
	}
	//console.log(event)
	// Do we trust the sender of this message?  (might be
	// different from what we originally opened, for example).
	//if (event.origin !== "http://example.org")
    //return;

	// event.source is popup
	// event.data is "hi there yourself!  the secret response is: rheeeeet!"
}