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If you’re anything like me, you often find yourself working on multiple computers. Today I left a few tabs open in Firefox on my work laptop, and wanted to continue reading from my desktop. Normally I’d just grab the laptop, or RDP into it if it was my work desktop that had the open tabs, but at the moment my girlfriend is neck-deep in WoW on the MacBook. Having had this problem before (getting tabs back remotely, not a laptop occupied with WoW), I started thinking about a solution.

I could have closed my local firefox session, moved the sessionstore.js somewhere else, copied the one from the laptop over, re-opened firefox, … well, you get the idea.

But that sounds like a really sub-optimal solution. So I started looking around a bit. It seems that sessionstore.js is almost JSON, but as per Mozilla bug 407110, it’s not quite standards-compliant. Luckily, it seems that PHP’s JSON module is quite tolerant, so once I stripped off the leading and trailing parens from the file contents, it parsed quite nicely.

I’ve written a small dumpFirefoxSession.php script that reads the sessionstore.js file (in cwd or a specified path), unserializes the JSON as an array, and then dumps the tabs. It dumps as either plain text or HTML (currently just elements inside the body, not a full HTML file). The HTML will include ols for each window listing the tabs, links to the current content (sessionstore.js also holds history for each tab, but I don’t need this), and it shows which tab is currently selected.

You can grab the script from github at: https://github.com/jantman/misc-scripts/blob/master/nmap-xml-to-table.php. The current version is 3. You’ll need PHP (probably 5) with JSON support.


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