tec: Allow to change CSP header from controllers

For an extension, I needed to call a script from an external domain.
Unfortunately, the CSP headers didn't allow this domain and I had to
patch manually the FreshRSS FrontController for my extension. It's
obviously not a long-term solution since it has nothing to do in the
core of FRSS, and I don't want to apply this patch manually at each
update.

With this patch, I allow changing the CSP header from inside the
controller actions. It allows extensions to modify headers. It's also an
opportunity to remove a bit of code from the FrontController. I wasn't
happy with the previous implementation anyhow.

Reference: https://github.com/flusio/xExtension-Flus/commit/ed12d56#diff-ff12e33ed31b23bda327499fa6e84eccR143

1 files changed, 14 insertions, 0 deletions

diff --git a/app/Controllers/indexController.php b/app/Controllers/indexController.php
index 967029fd1..276d56acd 100755
--- a/app/Controllers/indexController.php
+++ b/app/Controllers/indexController.php
@@ -83,6 +83,13 @@ class FreshRSS_index_Controller extends Minz_ActionController {
 				Minz_Error::error(404);
 			}
 		};
+
+		$this->_csp([
+			'default-src' => "'self'",
+			'frame-src' => '*',
+			'img-src' => '* data:',
+			'media-src' => '*',
+		]);
 	}
 
 	/**
@@ -121,6 +128,13 @@ class FreshRSS_index_Controller extends Minz_ActionController {
 			$title = '(' . FreshRSS_Context::$get_unread . ') ' . $title;
 		}
 		Minz_View::prependTitle($title . ' · ');
+
+		$this->_csp([
+			'default-src' => "'self'",
+			'frame-src' => '*',
+			'img-src' => '* data:',
+			'media-src' => '*',
+		]);
 	}
 
 	/**