How to rewrite url-encoded-base64 with .htaccess

Question

I have used timthumb to resize images from external site. I would like rewrite url to security my site But I don't know how to do it with .htaccess and php

(1) htp://mydomain.com/timthumb.php?src=htp://any-images.jpg&h=70&w=70&zc=1

(2) htp://mydomain.com/70/70/aHR0cDovL2ltYWdlc2hhY2suY29tL2EvaW1nOTEyLzE4NTgvZ3Z

I used php encode base64 htp://any-images.jpg to aHR0cDovL2ltYWdlc2hhY2suY29tL2EvaW1nOTEyLzE4NTgvZ3Z

Now the question is: How to do rewrite from (1) to (2)?

Would it make it easier for yourself if your url's had a clue as to what was in them? e.g.: http:/example.com/thumb/70/70/aHR0cD... instead of: http://example.com/70/70/aHR0cD...? Type of url e.g. 'thumb'. It will make the '.htaccess' rules easier and more reliable. — Ryan Vincent
– Ryan Vincent, Commented Dec 6, 2014 at 16:49
Sorry i misunderstood what you want to do, what is the full url that you want the user to see in the web browser for your image url? — Ryan Vincent
– Ryan Vincent, Commented Dec 6, 2014 at 16:56
On web brower user will see link (2) <img src="http:/example.com/70/70/aHR0cD..."> — Jason Nguyen
– Jason Nguyen, Commented Dec 6, 2014 at 16:58

TerryE · Accepted Answer · 2014-12-06 22:54:08Z

1

If you have sysadmin privilege you could use RewriteMap to define a mapping process as per the documentation, However since you are already via a PHP script you could use a regexp of the form

 RewriteRule ^(\d+)/([A-Za-z0-9+/]*)$ timthumb.php?h=$1&base64=$  [QSA]

But you would need to modify timthumb.php to parse the base64 parameter and decode it.

answered Dec 6, 2014 at 22:54

TerryE

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