ACP2E-923: Compact strategy causes an invalid reference to an external domain when running SCD

Author: thiaramus

app/code/Magento/Deploy/Package/Processor/PreProcessor/Css.php

@@ -120,6 +120,19 @@ private function hasOverrides(PackageFile $parentFile, Package $package)
         return false;
     }
 
+    /**
+     * See if given path is local or remote URL
+     *
+     * @param string $path
+     * @return bool
+     */
+    private function isLocal(string $path): bool {
+        $pattern = '{^(file://(?!//)|/(?!/)|/?[a-z]:[\\\\/]|\.\.[\\\\/]|[a-z0-9_.-]+[\\\\/])}i';
+        $result = preg_match($pattern, $path);
+
+        return (bool) $result;
+    }
+
     /**
      * Build map file
      *
@@ -138,10 +151,12 @@ private function buildMap($packagePath, $filePath, $fullPath)
             $content = $this->staticDir->readFile($this->minification->addMinifiedSign($fullPath));
 
             $callback = function ($matchContent) use ($packagePath, $filePath, &$imports) {
-                $importRelPath = $this->normalize(pathinfo($filePath, PATHINFO_DIRNAME) . '/' . $matchContent['path']);
-                $imports[$importRelPath] = $this->normalize(
-                    $packagePath . '/' . pathinfo($filePath, PATHINFO_DIRNAME) . '/' . $matchContent['path']
-                );
+                if ($this->isLocal($matchContent['path'])) {
+                    $importRelPath = $this->normalize(pathinfo($filePath, PATHINFO_DIRNAME) . '/' . $matchContent['path']);
+                    $imports[$importRelPath] = $this->normalize(
+                        $packagePath . '/' . pathinfo($filePath, PATHINFO_DIRNAME) . '/' . $matchContent['path']
+                    );
+                }
             };
             preg_replace_callback(Import::REPLACE_PATTERN, $callback, $content);