Add missing file after backout aa83abd4fd01

2025-02-05 13:45:46 +00:00 · 2011-05-22 18:09:55 +02:00 · 2011-05-22 18:09:55 +02:00 · d8f57ea03c
commit d8f57ea03c
parent 650910705e
1 changed files with 91 additions and 0 deletions
--- a/xpcom/base/nsSetDllDirectory.cpp
+++ b/xpcom/base/nsSetDllDirectory.cpp
@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Ehsan Akhgari <ehsan@mozilla.com> (Original Author)
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef XP_WIN
+#error This file only makes sense on Windows.
+#endif
+
+#include <windows.h>
+#include <stdlib.h>
+#include "nsSetDllDirectory.h"
+
+void
+SanitizeEnvironmentVariables()
+{
+  DWORD bufferSize = GetEnvironmentVariableW(L"PATH", NULL, 0);
+  if (bufferSize) {
+    wchar_t* originalPath = new wchar_t[bufferSize];
+    if (bufferSize - 1 == GetEnvironmentVariableW(L"PATH", originalPath, bufferSize)) {
+      bufferSize = ExpandEnvironmentStringsW(originalPath, NULL, 0);
+      if (bufferSize) {
+        wchar_t* newPath = new wchar_t[bufferSize];
+        if (ExpandEnvironmentStringsW(originalPath,
+                                      newPath,
+                                      bufferSize)) {
+          SetEnvironmentVariableW(L"PATH", newPath);
+        }
+        delete[] newPath;
+      }
+    }
+    delete[] originalPath;
+  }
+}
+
+namespace mozilla {
+
+XPCOM_API(void)
+NS_SetDllDirectory(const WCHAR *aDllDirectory)
+{
+  typedef BOOL
+  (WINAPI *pfnSetDllDirectory) (LPCWSTR);
+  static pfnSetDllDirectory setDllDirectory = nsnull;
+  if (!setDllDirectory) {
+    setDllDirectory = reinterpret_cast<pfnSetDllDirectory>
+      (GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "SetDllDirectoryW"));
+
+    // If it's the first time we're running this function, sanitize the
+    // environment variables too.
+    SanitizeEnvironmentVariables();
+  }
+  if (setDllDirectory) {
+    setDllDirectory(aDllDirectory);
+  }
+}
+
+}
+