com.sun.jna.platform.win32.COM.COMUtils Maven / Gradle / Ivy
/* Copyright (c) 2013 Tobias Wolf, All Rights Reserved
*
* The contents of this file is dual-licensed under 2
* alternative Open Source/Free licenses: LGPL 2.1 or later and
* Apache License 2.0. (starting with JNA version 4.0.0).
*
* You can freely decide which license you want to apply to
* the project.
*
* You may obtain a copy of the LGPL License at:
*
* http://www.gnu.org/licenses/licenses.html
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "LGPL2.1".
*
* You may obtain a copy of the Apache License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "AL2.0".
*/
package com.sun.jna.platform.win32.COM;
import com.sun.jna.LastErrorException;
import java.util.ArrayList;
import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.Advapi32;
import com.sun.jna.platform.win32.Advapi32Util;
import com.sun.jna.platform.win32.Advapi32Util.EnumKey;
import com.sun.jna.platform.win32.Advapi32Util.InfoKey;
import com.sun.jna.platform.win32.Kernel32Util;
import com.sun.jna.platform.win32.OaIdl.EXCEPINFO;
import com.sun.jna.platform.win32.Ole32;
import com.sun.jna.platform.win32.OleAuto;
import com.sun.jna.platform.win32.W32Errors;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.platform.win32.WinNT.HRESULT;
import com.sun.jna.platform.win32.WinReg;
import com.sun.jna.platform.win32.WinReg.HKEYByReference;
import com.sun.jna.ptr.IntByReference;
/**
* The Class COMUtils.
*
* @author [email protected] The Class COMUtils.
*/
public abstract class COMUtils {
/** The Constant CO_E_NOTINITIALIZED. */
public static final int S_OK = 0;
public static final int S_FALSE = 1;
public static final int E_UNEXPECTED=0x8000FFFF;
/**
* Succeeded.
*
* @param hr
* the hr
* @return true, if successful
*/
public static boolean SUCCEEDED(HRESULT hr) {
return SUCCEEDED(hr.intValue());
}
/**
* Succeeded.
*
* @param hr
* the hr
* @return true, if successful
*/
public static boolean SUCCEEDED(int hr) {
return hr >= 0;
}
/**
* Failed.
*
* @param hr
* the hr
* @return true, if successful
*/
public static boolean FAILED(HRESULT hr) {
return FAILED(hr.intValue());
}
/**
* Failed.
*
* @param hr
* the hr
* @return true, if successful
*/
public static boolean FAILED(int hr) {
return hr < 0;
}
/**
* Throw new exception.
*
* @param hr
* the hr
*/
public static void checkRC(HRESULT hr) {
if (FAILED(hr)) {
String formatMessage;
try {
formatMessage = Kernel32Util.formatMessage(hr) + "(HRESULT: " + Integer.toHexString(hr.intValue()) + ")";
} catch (LastErrorException ex) {
// throws if HRESULT can't be resolved
formatMessage = "(HRESULT: " + Integer.toHexString(hr.intValue()) + ")";
}
throw new COMException(formatMessage, hr);
}
}
/**
* Check status of HRESULT if it indicates a failed call a COMInvokeException
* is reaised.
*
* The string members of the pExcepInfo are freed in this call and can't
* be used afterwards. The structure is not freeed, as it is expected, that
* is allocated via the Memory object of JNA.
*
* @param hr
* the hr
* @param pExcepInfo
* the excep info, it is expected
* @param puArgErr
* the pu arg err
*/
public static void checkRC(HRESULT hr, EXCEPINFO pExcepInfo,
IntByReference puArgErr) {
COMException resultException = null;
if (FAILED(hr)) {
StringBuilder formatMessage = new StringBuilder();
Integer errorArg = null;
Integer wCode = null;
Integer scode = null;
String description = null;
String helpFile = null;
Integer helpCtx = null;
String source = null;
if(puArgErr != null) {
errorArg = puArgErr.getValue();
}
try {
formatMessage.append(Kernel32Util.formatMessage(hr));
} catch (LastErrorException ex) {
// throws if HRESULT can't be resolved
}
formatMessage.append("(HRESULT: ");
formatMessage.append(Integer.toHexString(hr.intValue()));
formatMessage.append(")");
if(pExcepInfo != null) {
wCode = pExcepInfo.wCode.intValue();
scode = pExcepInfo.scode.intValue();
helpCtx = pExcepInfo.dwHelpContext.intValue();
if(pExcepInfo.bstrSource != null) {
source = pExcepInfo.bstrSource.getValue();
formatMessage.append("\nSource: ");
formatMessage.append(source);
}
if(pExcepInfo.bstrDescription != null) {
description = pExcepInfo.bstrDescription.getValue();
formatMessage.append("\nDescription: ");
formatMessage.append(description);
}
if(pExcepInfo.bstrHelpFile != null) {
helpFile = pExcepInfo.bstrHelpFile.getValue();
}
}
throw new COMInvokeException(
formatMessage.toString(),
hr,
errorArg,
description,
helpCtx,
helpFile,
scode,
source,
wCode
);
}
if(pExcepInfo != null) {
if(pExcepInfo.bstrSource != null) {
OleAuto.INSTANCE.SysFreeString(pExcepInfo.bstrSource);
}
if(pExcepInfo.bstrDescription != null) {
OleAuto.INSTANCE.SysFreeString(pExcepInfo.bstrDescription);
}
if(pExcepInfo.bstrHelpFile != null) {
OleAuto.INSTANCE.SysFreeString(pExcepInfo.bstrHelpFile);
}
}
if(resultException != null) {
throw resultException;
}
}
/**
* Gets the all com info on system.
*
* @return the all com info on system
*/
public static ArrayList getAllCOMInfoOnSystem() {
HKEYByReference phkResult = new HKEYByReference();
HKEYByReference phkResult2 = new HKEYByReference();
String subKey;
ArrayList comInfos = new ArrayList();
try {
// open root key
phkResult = Advapi32Util.registryGetKey(WinReg.HKEY_CLASSES_ROOT,
"CLSID", WinNT.KEY_READ);
// open subkey
InfoKey infoKey = Advapi32Util.registryQueryInfoKey(
phkResult.getValue(), WinNT.KEY_READ);
for (int i = 0; i < infoKey.lpcSubKeys.getValue(); i++) {
EnumKey enumKey = Advapi32Util.registryRegEnumKey(
phkResult.getValue(), i);
subKey = Native.toString(enumKey.lpName);
COMInfo comInfo = new COMInfo(subKey);
phkResult2 = Advapi32Util.registryGetKey(phkResult.getValue(),
subKey, WinNT.KEY_READ);
InfoKey infoKey2 = Advapi32Util.registryQueryInfoKey(
phkResult2.getValue(), WinNT.KEY_READ);
for (int y = 0; y < infoKey2.lpcSubKeys.getValue(); y++) {
EnumKey enumKey2 = Advapi32Util.registryRegEnumKey(
phkResult2.getValue(), y);
String subKey2 = Native.toString(enumKey2.lpName);
if (subKey2.equals("InprocHandler32")) {
comInfo.inprocHandler32 = (String) Advapi32Util
.registryGetValue(phkResult2.getValue(),
subKey2, null);
} else if (subKey2.equals("InprocServer32")) {
comInfo.inprocServer32 = (String) Advapi32Util
.registryGetValue(phkResult2.getValue(),
subKey2, null);
} else if (subKey2.equals("LocalServer32")) {
comInfo.localServer32 = (String) Advapi32Util
.registryGetValue(phkResult2.getValue(),
subKey2, null);
} else if (subKey2.equals("ProgID")) {
comInfo.progID = (String) Advapi32Util
.registryGetValue(phkResult2.getValue(),
subKey2, null);
} else if (subKey2.equals("TypeLib")) {
comInfo.typeLib = (String) Advapi32Util
.registryGetValue(phkResult2.getValue(),
subKey2, null);
}
}
Advapi32.INSTANCE.RegCloseKey(phkResult2.getValue());
comInfos.add(comInfo);
}
} finally {
Advapi32.INSTANCE.RegCloseKey(phkResult.getValue());
Advapi32.INSTANCE.RegCloseKey(phkResult2.getValue());
}
return comInfos;
}
/**
* Check if COM was initialized correctly. The initialization status is not changed!
*
* This is a debug function, not for normal usage!
*
* @return whether COM has been initialized
*/
public static boolean comIsInitialized() {
WinNT.HRESULT hr = Ole32.INSTANCE.CoInitializeEx(Pointer.NULL, Ole32.COINIT_MULTITHREADED);
if (hr.equals(W32Errors.S_OK)) {
// User failed - uninitialize again and return false
Ole32.INSTANCE.CoUninitialize();
return false;
} else if (hr.equals(W32Errors.S_FALSE)) {
// OK Variant 1 - User initialized COM with same threading module as
// in this check. According to MSDN CoUninitialize needs to be called
// in this case.
Ole32.INSTANCE.CoUninitialize();
return true;
} else if (hr.intValue() == W32Errors.RPC_E_CHANGED_MODE) {
return true;
}
// If another result than the checked ones above happens handling is
// delegated to the "normal" COM exception handling and a COMException
// will be raised.
COMUtils.checkRC(hr);
// The return will not be met, as COMUtils#checkRC will raise an exception
return false;
}
/**
* The Class COMInfo.
*
* @author [email protected] The Class COMInfo.
*/
public static class COMInfo {
/** The clsid. */
public String clsid;
/** The inproc handler32. */
public String inprocHandler32;
/** The inproc server32. */
public String inprocServer32;
/** The local server32. */
public String localServer32;
/** The prog id. */
public String progID;
/** The type lib. */
public String typeLib;
/**
* Instantiates a new cOM info.
*/
public COMInfo() {
}
/**
* Instantiates a new cOM info.
*
* @param clsid
* the clsid
*/
public COMInfo(String clsid) {
this.clsid = clsid;
}
}
}
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