Backport security for old PHP versions (#334)

facade · Mar 8, 2021 · f2dc8ba · f2dc8ba
1 parent 9fc6c3d
commit f2dc8ba
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/src/Solutions/MakeViewVariableOptionalSolution.php b/src/Solutions/MakeViewVariableOptionalSolution.php
@@ -4,6 +4,7 @@
 
 use Facade\IgnitionContracts\RunnableSolution;
 use Illuminate\Support\Facades\Blade;
+use Illuminate\Support\Str;
 
 class MakeViewVariableOptionalSolution implements RunnableSolution
 {
@@ -72,6 +73,10 @@ public function run(array $parameters = [])
 
     public function makeOptional(array $parameters = [])
     {
+        if (!$this->isSafePath($parameters['viewFile'])) {
+            return false;
+        }
+
         $originalContents = file_get_contents($parameters['viewFile']);
         $newContents = str_replace('$'.$parameters['variableName'], '$'.$parameters['variableName']." ?? ''", $originalContents);
 
@@ -87,6 +92,19 @@ public function makeOptional(array $parameters = [])
         return $newContents;
     }
 
+    protected function isSafePath(string $path): bool
+    {
+        if (!Str::startsWith($path, ['/', './'])) {
+            return false;
+        }
+
+        if (!Str::endsWith($path, '.blade.php')) {
+            return false;
+        }
+
+        return true;
+    }
+
     protected function generateExpectedTokens(array $originalTokens, string $variableName): array
     {
         $expectedTokens = [];