From 497ef3bfa2cbf9a6df31f68aab7319b7c2df7444 Mon Sep 17 00:00:00 2001
From: Erick Hitter <git-contrib@ethitter.com>
Date: Sun, 18 Feb 2018 15:07:41 -0800
Subject: [PATCH] Conditional to confirm we can rewrite
---
inc/functions.php | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/inc/functions.php b/inc/functions.php
index 6179bab..a344b5e 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -12,6 +12,31 @@ namespace Camo_Image_Proxy;
*
* @return object
*/
-function Options() {
+function Options() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid, Generic.Functions.OpeningFunctionBraceKernighanRitchie.ContentAfterBrace
return Options::instance();
}
+
+/**
+ * Can URLs be rewritten to use Camo?
+ *
+ * @return bool
+ */
+function can_rewrite() : bool {
+ $host = Options()->get( 'host' );
+ $key = Options()->get( 'key' );
+
+ $can_rewrite = true;
+
+ // Validate host.
+ if ( empty( $host ) || ( ! filter_var( $host, FILTER_VALIDATE_URL ) && ! filter_var( $host, FILTER_VALIDATE_IP ) ) ) {
+ $can_rewrite = false;
+ }
+
+ // Validate key.
+ // TODO: make sure it's an HMAC or something?
+ if ( empty( $key ) || ! is_string( $key ) ) {
+ $can_rewrite = false;
+ }
+
+ return apply_filters( 'camo_image_proxy_can_rewrite', $can_rewrite, $host, $key );
+}
--
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