Replace getcwd() with Roundcubemail path from composer API

src/Roundcube/Composer/ExtensionInstaller.php

@@ -20,20 +20,30 @@
  * @version  GIT: <git_id>
  * @link     https://github.com/roundcube/plugin-installer
  */
-class ExtensionInstaller extends LibraryInstaller
+abstract class ExtensionInstaller extends LibraryInstaller
 {
     protected $composer_type;
 
+    protected function getRoundcubemailInstallPath(): string
+    {
+        $roundcubemailPackage = $this->composer
+            ->getRepositoryManager()
+            ->findPackage('roundcube/roundcubemail', '*');
+
+        return $this->getInstallPath($roundcubemailPackage);
+    }
+
     /**
      * {@inheritDoc}
      */
     public function getInstallPath(PackageInterface $package)
     {
-        static $vendorDir;
-        if ($vendorDir === null) {
-            $vendorDir = $this->getVendorDir();
+        if (!$this->supports($package->getType())) {
+            return parent::getInstallPath($package);
         }
 
+        $vendorDir = $this->getVendorDir();
+
         return sprintf('%s/%s', $vendorDir, $this->getPackageName($package));
     }
 
@@ -44,7 +54,7 @@ public function install(InstalledRepositoryInterface $repo, PackageInterface $pa
     {
         // initialize Roundcube environment
         if (!defined('INSTALL_PATH')) {
-            define('INSTALL_PATH', getcwd() . '/');
+            define('INSTALL_PATH', $this->getRoundcubemailInstallPath() . '/');
         }
         require_once INSTALL_PATH . 'program/include/iniset.php';
 
@@ -118,7 +128,7 @@ public function update(InstalledRepositoryInterface $repo, PackageInterface $ini
     {
         // initialize Roundcube environment
         if (!defined('INSTALL_PATH')) {
-            define('INSTALL_PATH', getcwd() . '/');
+            define('INSTALL_PATH', $this->getRoundcubemailInstallPath() . '/');
         }
         require_once INSTALL_PATH . 'program/include/iniset.php';
 
@@ -195,7 +205,7 @@ public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $
     {
         // initialize Roundcube environment
         if (!defined('INSTALL_PATH')) {
-            define('INSTALL_PATH', getcwd() . '/');
+            define('INSTALL_PATH', $this->getRoundcubemailInstallPath() . '/');
         }
         require_once INSTALL_PATH . 'program/include/iniset.php';
 
@@ -247,10 +257,7 @@ public function supports($packageType)
      *
      * @return string
      */
-    public function getVendorDir()
-    {
-        return getcwd();
-    }
+    abstract public function getVendorDir();
 
     /**
      * Extract the (valid) package name from the package object
@@ -368,7 +375,7 @@ private function rcubeConfigFile($file = 'config.inc.php')
     {
         $config = new \rcube_config();
         $paths  = $config->resolve_paths($file);
-        $path   = getcwd() . '/config/' . $file;
+        $path   = $this->getRoundcubemailInstallPath() . '/config/' . $file;
 
         foreach ($paths as $fpath) {
             if ($fpath && is_file($fpath) && is_readable($fpath)) {
@@ -396,7 +403,7 @@ private function rcubeRunScript($script, PackageInterface $package)
 
         // run PHP script in Roundcube context
         if ($scriptfile && preg_match('/\.php$/', $scriptfile)) {
-            $incdir = realpath(getcwd() . '/program/include');
+            $incdir = realpath($this->getRoundcubemailInstallPath() . '/program/include');
             include_once($incdir . '/iniset.php');
             include($scriptfile);
         }

src/Roundcube/Composer/PluginInstaller.php

@@ -16,7 +16,7 @@ class PluginInstaller extends ExtensionInstaller
 
     public function getVendorDir()
     {
-        return getcwd() . DIRECTORY_SEPARATOR . 'plugins';
+        return $this->getRoundcubemailInstallPath() . DIRECTORY_SEPARATOR . 'plugins';
     }
 
     protected function confirmInstall($package_name)

src/Roundcube/Composer/RoundcubeInstaller.php

@@ -8,7 +8,7 @@
 
 class RoundcubeInstaller implements PluginInterface
 {
-    private $extentions = ['\Roundcube\Composer\PluginInstaller', '\Roundcube\Composer\SkinInstaller'];
+    private $extentions = [PluginInstaller::class, SkinInstaller::class];
     private $installers = [];
 
     public function activate(Composer $composer, IOInterface $io)

src/Roundcube/Composer/SkinInstaller.php

@@ -16,7 +16,7 @@ class SkinInstaller extends ExtensionInstaller
 
     public function getVendorDir()
     {
-        return getcwd() . DIRECTORY_SEPARATOR . 'skins';
+        return $this->getRoundcubemailInstallPath() . DIRECTORY_SEPARATOR . 'skins';
     }
 
     protected function confirmInstall($package_name)