1 /*
   2  * Copyright (c) 2005, 2014, 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 "jni_util.h"
  27 #include "awt.h"
  28 #include <jni.h>
  29 #include <shellapi.h>
  30 #include <float.h>
  31 
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35 
  36 /*
  37  * Class:     sun_awt_windows_WDesktopPeer
  38  * Method:    ShellExecute
  39  * Signature: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
  40  */
  41 JNIEXPORT jstring JNICALL Java_sun_awt_windows_WDesktopPeer_ShellExecute
  42   (JNIEnv *env, jclass cls, jstring fileOrUri_j, jstring verb_j)
  43 {
  44     LPCWSTR fileOrUri_c = JNU_GetStringPlatformChars(env, fileOrUri_j, JNI_FALSE);
  45     CHECK_NULL_RETURN(fileOrUri_c, NULL);
  46     LPCWSTR verb_c = JNU_GetStringPlatformChars(env, verb_j, JNI_FALSE);
  47     if (verb_c == NULL) {
  48         JNU_ReleaseStringPlatformChars(env, fileOrUri_j, fileOrUri_c);
  49         return NULL;
  50     }
  51 
  52     // 6457572: ShellExecute possibly changes FPU control word - saving it here
  53     unsigned oldcontrol87 = _control87(0, 0);
  54     HINSTANCE retval = ::ShellExecute(NULL, verb_c, fileOrUri_c, NULL, NULL, SW_SHOWNORMAL);
  55     _control87(oldcontrol87, 0xffffffff);
  56 
  57     JNU_ReleaseStringPlatformChars(env, fileOrUri_j, fileOrUri_c);
  58     JNU_ReleaseStringPlatformChars(env, verb_j, verb_c);
  59 
  60     if ((int)retval <= 32) {
  61         // ShellExecute failed.
  62         LPTSTR buffer = NULL;
  63         int len = ::FormatMessage(
  64                     FORMAT_MESSAGE_ALLOCATE_BUFFER |
  65                     FORMAT_MESSAGE_FROM_SYSTEM  |
  66                     FORMAT_MESSAGE_IGNORE_INSERTS,
  67                     NULL,
  68                     (int)retval,
  69                     MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
  70                     (LPTSTR)&buffer,
  71                     0,
  72                     NULL );
  73 
  74         if (buffer) {
  75             jstring errmsg = JNU_NewStringPlatform(env, buffer);
  76             LocalFree(buffer);
  77             return errmsg;
  78         }
  79     }
  80 
  81     return NULL;
  82 }
  83 
  84 #ifdef __cplusplus
  85 }
  86 #endif