1 /*
   2  * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include "awt.h"
  27 #include <jni.h>
  28 #include <shellapi.h>
  29 #include <float.h>
  30 
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34 
  35 /*
  36  * Class:     sun_awt_windows_WDesktopPeer
  37  * Method:    ShellExecute
  38  * Signature: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
  39  */
  40 JNIEXPORT jstring JNICALL Java_sun_awt_windows_WDesktopPeer_ShellExecute
  41   (JNIEnv *env, jclass cls, jstring uri_j, jstring verb_j)
  42 {
  43     LPCWSTR uri_c = JNU_GetStringPlatformChars(env, uri_j, JNI_FALSE);
  44     LPCWSTR verb_c = JNU_GetStringPlatformChars(env, verb_j, JNI_FALSE);
  45 
  46     // 6457572: ShellExecute possibly changes FPU control word - saving it here
  47     unsigned oldcontrol87 = _control87(0, 0);
  48     HINSTANCE retval = ::ShellExecute(NULL, verb_c, uri_c, NULL, NULL, SW_SHOWNORMAL);
  49     _control87(oldcontrol87, 0xffffffff);
  50 
  51     JNU_ReleaseStringPlatformChars(env, uri_j, uri_c);
  52     JNU_ReleaseStringPlatformChars(env, verb_j, verb_c);
  53 
  54     if ((int)retval <= 32) {
  55         // ShellExecute failed.
  56         LPTSTR buffer = NULL;
  57         int len = ::FormatMessage(
  58                     FORMAT_MESSAGE_ALLOCATE_BUFFER |
  59                     FORMAT_MESSAGE_FROM_SYSTEM  |
  60                     FORMAT_MESSAGE_IGNORE_INSERTS,
  61                     NULL,
  62                     (int)retval,
  63                     MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
  64                     (LPTSTR)&buffer,
  65                     0,
  66                     NULL );
  67 
  68         if (buffer) {
  69             jstring errmsg = JNU_NewStringPlatform(env, buffer);
  70             LocalFree(buffer);
  71             return errmsg;
  72         }
  73     }
  74 
  75     return NULL;
  76 }
  77 
  78 #ifdef __cplusplus
  79 }
  80 #endif