From 8f454c67084f0364f294030255c39c37ca19990d Mon Sep 17 00:00:00 2001
From: Tanel Pipar <tanel@spin.ee>
Date: Tue, 3 Nov 2020 12:01:48 +0200
Subject: [PATCH] Remove CWD from only the beginning of a path in ZipArchiver

Fixes https://github.com/composer/composer/issues/9403
---
 src/Composer/Package/Archiver/ZipArchiver.php |  5 +++-
 .../Test/Package/Archiver/ZipArchiverTest.php | 30 +++++++++++++------
 2 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/src/Composer/Package/Archiver/ZipArchiver.php b/src/Composer/Package/Archiver/ZipArchiver.php
index b6cfaf73f..ec241a026 100644
--- a/src/Composer/Package/Archiver/ZipArchiver.php
+++ b/src/Composer/Package/Archiver/ZipArchiver.php
@@ -39,7 +39,10 @@ class ZipArchiver implements ArchiverInterface
             foreach ($files as $file) {
                 /** @var \SplFileInfo $file */
                 $filepath = strtr($file->getPath()."/".$file->getFilename(), '\\', '/');
-                $localname = str_replace($sources.'/', '', $filepath);
+                $localname = $filepath;
+                if (strpos($localname, $sources . '/') === 0) {
+                    $localname = substr($localname, strlen($sources . '/'));
+                }
                 if ($file->isDir()) {
                     $zip->addEmptyDir($localname);
                 } else {
diff --git a/tests/Composer/Test/Package/Archiver/ZipArchiverTest.php b/tests/Composer/Test/Package/Archiver/ZipArchiverTest.php
index c76843c39..a11320325 100644
--- a/tests/Composer/Test/Package/Archiver/ZipArchiverTest.php
+++ b/tests/Composer/Test/Package/Archiver/ZipArchiverTest.php
@@ -12,6 +12,7 @@
 
 namespace Composer\Test\Package\Archiver;
 
+use ZipArchive;
 use Composer\Package\Archiver\ZipArchiver;
 
 class ZipArchiverTest extends ArchiverTest
@@ -22,8 +23,15 @@ class ZipArchiverTest extends ArchiverTest
             $this->markTestSkipped('Cannot run ZipArchiverTest, missing class "ZipArchive".');
         }
 
+        $files = array(
+            'file.txt',
+            'foo/bar/baz',
+            'x/baz',
+            'x/includeme',
+            'foo' . getcwd() . '/file.txt',
+        );
         // Set up repository
-        $this->setupDummyRepo();
+        $this->setupDummyRepo(array_merge($files));
         $package = $this->setupPackage();
         $target = sys_get_temp_dir().'/composer_archiver_test.zip';
 
@@ -31,23 +39,27 @@ class ZipArchiverTest extends ArchiverTest
         $archiver = new ZipArchiver();
         $archiver->archive($package->getSourceUrl(), $target, 'zip');
         $this->assertFileExists($target);
+        $zip = new ZipArchive();
+        $res = $zip->open($target);
+        self::assertTrue($res, 'Failed asserting that Zip file can be opened');
+        foreach ($files as $file) {
+            $this->assertSame('content', $zip->getFromName($file), 'Failed asserting that Zip contains ' . $file);
+        }
 
         unlink($target);
     }
 
     /**
      * Create a local dummy repository to run tests against!
+     * @param array $files
      */
-    protected function setupDummyRepo()
+    protected function setupDummyRepo($files)
     {
         $currentWorkDir = getcwd();
         chdir($this->testDir);
-
-        $this->writeFile('file.txt', 'content', $currentWorkDir);
-        $this->writeFile('foo/bar/baz', 'content', $currentWorkDir);
-        $this->writeFile('foo/bar/ignoreme', 'content', $currentWorkDir);
-        $this->writeFile('x/baz', 'content', $currentWorkDir);
-        $this->writeFile('x/includeme', 'content', $currentWorkDir);
+        foreach ($files as $file) {
+            $this->writeFile($file, 'content', $currentWorkDir);
+        }
 
         chdir($currentWorkDir);
     }
@@ -58,7 +70,7 @@ class ZipArchiverTest extends ArchiverTest
             mkdir(dirname($path), 0777, true);
         }
 
-        $result = file_put_contents($path, 'a');
+        $result = file_put_contents($path, $content);
         if (false === $result) {
             chdir($currentWorkDir);
             throw new \RuntimeException('Could not save file.');