#935036 by bfroehle, dww, int: Exclude '.' and '..' when recursing through directories in update module.

includes/filetransfer/filetransfer.inc

@@ -208,7 +208,7 @@ abstract class FileTransfer {
       $destination = $destination . '/' . basename($source);
     }
     $this->createDirectory($destination);
-    foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST) as $filename => $file) {
+    foreach (new RecursiveIteratorIterator(new SkipDotsRecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST) as $filename => $file) {
       $relative_path = substr($filename, strlen($source));
       if ($file->isDir()) {
         $this->createDirectory($destination . $relative_path);
@@ -345,3 +345,31 @@ interface FileTransferChmodInterface {
    */
   function chmodJailed($path, $mode, $recursive);
 }
+
+/**
+ * Provides an interface for iterating recursively over filesystem directories.
+ *
+ * Manually skips '.' and '..' directories, since no existing method is
+ * available in PHP 5.2.
+ *
+ * @todo Depreciate in favor of RecursiveDirectoryIterator::SKIP_DOTS once PHP
+ *   5.3 or later is required.
+ */
+class SkipDotsRecursiveDirectoryIterator extends RecursiveDirectoryIterator {
+  /**
+   * Constructs a SkipDotsRecursiveDirectoryIterator
+   *
+   * @param $path
+   *   The path of the directory to be iterated over.
+   */
+  function __construct($path) {
+    parent::__construct($path);
+  }
+
+  function next() {
+    parent::next();
+    while ($this->isDot()) {
+      parent::next();
+    }
+  }
+}

includes/filetransfer/local.inc

@@ -31,7 +31,7 @@ class FileTransferLocal extends FileTransfer implements FileTransferChmodInterfa
       // Programmer error assertion, not something we expect users to see.
       throw new FileTransferException('removeDirectoryJailed() called with a path (%directory) that is not a directory.', NULL, array('%directory' => $directory));
     }
-    foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory), RecursiveIteratorIterator::CHILD_FIRST) as $filename => $file) {
+    foreach (new RecursiveIteratorIterator(new SkipDotsRecursiveDirectoryIterator($directory), RecursiveIteratorIterator::CHILD_FIRST) as $filename => $file) {
       if ($file->isDir()) {
         if (@!drupal_rmdir($filename)) {
           throw new FileTransferException('Cannot remove directory %directory.', NULL, array('%directory' => $filename));
@@ -64,7 +64,7 @@ class FileTransferLocal extends FileTransfer implements FileTransferChmodInterfa
 
   public function chmodJailed($path, $mode, $recursive) {
     if ($recursive && is_dir($path)) {
-      foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path), RecursiveIteratorIterator::SELF_FIRST) as $filename => $file) {
+      foreach (new RecursiveIteratorIterator(new SkipDotsRecursiveDirectoryIterator($path), RecursiveIteratorIterator::SELF_FIRST) as $filename => $file) {
         if (@!chmod($filename, $mode)) {
           throw new FileTransferException('Cannot chmod %path.', NULL, array('%path' => $filename));
         }