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By Chris Bennett
Plenty of posts on the forum relating to Content Security Policy (CSP) and how to integrate it with Processwire.
It's not too hard to implement a decent htaccess CSP that will get you a solid B+ at Mozilla Observatory.
If you're after A+ it's a little harder because of all the back-end stuff... until you realize it's surprisingly easy.
After a lot of testing, the easiest way I found was to specify only what is needed in the htaccess and then add your required CSP as a meta in your page template.
Plenty of people have suggested similar. Works very easily for back-end vs front-end, but gets complicated if you want front page editing.
Luckily, a little php will preserve back-end and front page editing capabilities while allowing you to lock down the site for anyone not logged in.
None of this is rocket science, but CSPs are a bit of a pain the rear, so the easier the better, I reckon 😉
The only CSP I'd suggest you include in your site htaccess is:
Header set Content-Security-Policy "frame-ancestors 'self'" The reason for this is you can't set "frame-ancestors" via meta tags.
In addition, you can only make your CSP more restrictive using meta tags, not less, so leaving the back-end free is a solid plan to avoid frustration.
Then in your public front-facing page template/s, add your desired Content Security Policy as a meta tag.
Please note: your CSP should be the first meta tag after your <head>.
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Security-Policy" content="Your CSP goes here"> <!-- followed by whatever your normal meta tags are --> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="format-detection" content="telephone=no"> If you haven't got Front Page Editing enabled, this works fine by itself.
Just one extra step is needed to make sure you don't have to worry either way.
The easiest way I found to allow both CSP and front page editing capabilities is the addition of a little php, according to whatever your needs are.
Basically, if the user is a guest, throw in your CSP, if they're not do nothing.
It's so simple I could have kicked myself when it finally dawned on me.
I wish it had clicked for me earlier in my testing, but it didn't so I'm here to try to save some other person a little time.
<!DOCTYPE html> <html> <head> <?php if ($user->isGuest()): ?> <meta http-equiv="Content-Security-Policy" content="Your CSP goes here"> <?php endif; ?> <!-- followed by whatever your normal meta tags are --> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="format-detection" content="telephone=no">
If you want it a bit more involved then you can add additional tests and be as specific as you like about what pages should get which CSP.
For example, the following is what I use to expand the scope of the CSP only for my "map" page:
<?php $loadMap = $page->name === "map"; ?> <!DOCTYPE html> <html> <head> <?php if ($user->isGuest()): ?> <meta http-equiv="Content-Security-Policy" content="default-src 'none'; base-uri 'self'; manifest-src 'self'; form-action 'self'; font-src 'self' data: https://fonts.gstatic.com; frame-src 'self' https://www.youtube.com; img-src 'self' data:<?php echo ($loadMap) ? " https://maps.googleapis.com https://maps.gstatic.com" : ""; ?> https://www.google-analytics.com; script-src 'self' <?php echo ($loadMap) ? "https://maps.googleapis.com " : ""; ?>https://www.google-analytics.com https://www.googletagmanager.com; style-src 'self' <?php echo ($loadMap) ? "'unsafe-inline' https://fonts.googleapis.com" : ""; ?>"> <?php endif; ?> Hope this saves someone a little time testing.
Hello forum, this is my first security related post, so I'm a bit of a newbie.
I understand that when I have direct front-input from user I should sanitize the input, but how about when I use a secret key for showing a API for a third-party supplier? Should I sanitize the input->get() key?
I've tested this issue and I tried ?key=<?php echo $page->field; ?> And without adding any sanitization it comes back: /?key=<?php%20echo%20$page->field;%20?>
So can I rely on this, or should I still use $sanitizer just in case?
Thanks for the help!
hopefully this is the right place to ask and is not a duplicate question.
I'm pretty new to processwire, so... if this question is kind of funny for some of you, you're welcome 😄
I have the following issue and can't find anything understandable about it. Maybe I'm searching the wrong way, but anyways.. here is my question:
How is it possible to rewrite the URLs, that I'll get a *.php ending?
https://www.mysite.de/urlsegment/ -> https://www.mysite.de/urlsegment.php
https://www.mysite.de/urlsegment/urlsegment/ -> https://www.mysite.de/urlsegment/urlsegment.php
Because I've read a lot about "Why do you wanna do this or have that?" – here my answer for that in advance:
I've built a processwire installation inside or around an existing website. Therefore, we want to keep the existing *.php Google entries. Sure, we could redirect via 301 Redirect, but would prefer to keep the *.php ending.
If you have further questions, please do not hesitate to ask.
Thank you in advance for your help.
How can I make a redirect inside the .htaccess to my custom maintenance.html file when any URL of my Website is accessed except the processwire admin (www.example.com/processwire/).
Because I want that my User's still can access the website when they are loggedin in Processwire.
When the current url starts with /processwire or if there is a processwire-login-cookie (Is there a cookie when user is logged in Processwire?) available the redirect should not work. Otherwise it should work.
How can I achieve this?
We have many booking calendars made with ProcessWire (own databases) and I want to do a web app (SQL) which allows user to log in. First, the user chooses the right calendar and then (s)he have to log in. The user can be from any of those calendars and the app is not running on ProcessWire (it can if necessary). So if there any way to make sure that the user has rights to the calendar (s)he tries to log in and if the password is correct.
Is there any better way to do this? I could also use PIN codes or something, but those need to be encrypted too.
Multiple ProcessWires A lot of users per ProcessWire Everyone can log in to the web app (when using right calendar)