Trick to open blob:… URIs

Thanks to Dumby: https://forum.mozilla-russia.org/viewtopic.php?pid=756712#p756712
Infocatcher · Apr 16, 2018 · 0a0d5bb · 0a0d5bb
1 parent d2306de
commit 0a0d5bb
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/background.js b/background.js
@@ -148,6 +148,8 @@ function updateMenus() {
 
 function onMessageFromContent(msg, sender, sendResponse) {
 	if(msg.action == "openURI") {
+		if(msg.uri instanceof Blob) // Should be converted here to prevent security errors
+			msg.uri = URL.createObjectURL(msg.uri);
 		if(msg.loadIn == 1)
 			openURIInWindow(sender.tab, msg);
 		else

diff --git a/content.js b/content.js
@@ -184,10 +184,8 @@ function openURIItem(e, trg, it, inBG, loadIn) {
 		&& "URL" in window
 		&& "createObjectURL" in URL
 	) {
-		// Note: not allowed at least for now
-		// Security Error: Content at moz-extension://.../ may not load data from blob:...
 		it.toBlob(function(blob) {
-			openURIIn(URL.createObjectURL(blob), inBG, loadIn);
+			openURIIn(blob, inBG, loadIn);
 		});
 		return;
 	}