From fcbc1044e0b35c8359ff519346c1335c7b929b87 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Tue, 20 Dec 2016 17:27:24 +0100
Subject: [PATCH] Revert "Allow use of parent directories in PathDownloader
 when not mirroring the path"

---
 src/Composer/Downloader/PathDownloader.php | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/Composer/Downloader/PathDownloader.php b/src/Composer/Downloader/PathDownloader.php
index f392c0125..cde32f4a6 100644
--- a/src/Composer/Downloader/PathDownloader.php
+++ b/src/Composer/Downloader/PathDownloader.php
@@ -45,6 +45,13 @@ class PathDownloader extends FileDownloader implements VcsCapableDownloaderInter
             ));
         }
 
+        if (strpos(realpath($path) . DIRECTORY_SEPARATOR, $realUrl . DIRECTORY_SEPARATOR) === 0) {
+            throw new \RuntimeException(sprintf(
+                'Package %s cannot install to "%s" inside its source at "%s"',
+                $package->getName(), realpath($path), $realUrl
+            ));
+        }
+
         // Get the transport options with default values
         $transportOptions = $package->getTransportOptions() + array('symlink' => null);
 
@@ -65,13 +72,6 @@ class PathDownloader extends FileDownloader implements VcsCapableDownloaderInter
             $allowedStrategies = array(self::STRATEGY_MIRROR);
         }
 
-        if ($currentStrategy != self::STRATEGY_MIRROR && strpos(realpath($path) . DIRECTORY_SEPARATOR, $realUrl . DIRECTORY_SEPARATOR) === 0) {
-            throw new \RuntimeException(sprintf(
-                'Package %s cannot install to "%s" inside its source at "%s"',
-                $package->getName(), realpath($path), $realUrl
-            ));
-        }
-
         $fileSystem = new Filesystem();
         $this->filesystem->removeDirectory($path);