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/**j-Interop (Pure Java implementation of DCOM protocol)
 * Copyright (C) 2006  Vikram Roopchand
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 *
 * Though a sincere effort has been made to deliver a professional,
 * quality product,the library itself is distributed WITHOUT ANY WARRANTY;
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 */


package org.jinterop.winreg.smb;


import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.InetAddress;
import java.net.URLEncoder;
import java.net.UnknownHostException;
import java.util.Properties;

import jcifs.smb.SmbException;

import org.jinterop.dcom.common.IJIAuthInfo;
import org.jinterop.dcom.common.JIErrorCodes;
import org.jinterop.dcom.common.JIException;
import org.jinterop.dcom.common.JIRuntimeException;
import org.jinterop.dcom.common.JISystem;
import org.jinterop.winreg.IJIWinReg;
import org.jinterop.winreg.JIPolicyHandle;

import rpc.Endpoint;
import rpc.Stub;

/**
 * @exclude
 * @since 1.0
 *
 */
public class JIWinRegStub extends Stub implements IJIWinReg {


	//"ncacn_np:" + servername + "[\\PIPE\\winreg]"
	public JIWinRegStub(IJIAuthInfo authInfo, String serverName) throws UnknownHostException
	{
		super();
		if (authInfo == null)
		{
			throw new IllegalArgumentException(JISystem.getLocalizedMessage(JIErrorCodes.JI_AUTH_NOT_SUPPLIED));
		}

		super.setTransportFactory(new rpc.ncacn_np.TransportFactory());
		super.setProperties(new Properties());
		super.getProperties().setProperty("rpc.ncacn_np.username", authInfo.getUserName());
		String password = null;
		try {
			password = URLEncoder.encode(authInfo.getPassword(),"utf-8");
		} catch (UnsupportedEncodingException e) {
			try {
				password = URLEncoder.encode(authInfo.getPassword(),System.getProperty("file.encoding"));
			} catch (UnsupportedEncodingException e1) {
				throw new JIRuntimeException(JIErrorCodes.JI_WINREG_EXCEPTION2);
			}
		}
		//some strange issue with the space character, it gets encoded to '+' (which is right) , but Windows refuses it.
		//Manually changing + to %20
		StringBuffer password_ = new StringBuffer();
		for (int i = 0 ; i < password.length(); i++)
		{
			char ch = password.charAt(i);
			if (ch == '+')
			{
				password_.append("%20");
				continue;
			}

			password_.append(ch);
		}

		super.getProperties().setProperty("rpc.ncacn_np.password", password_.toString());
		super.getProperties().setProperty("rpc.ncacn_np.domain", authInfo.getDomain());
		serverName = serverName.trim();
		serverName = InetAddress.getByName(serverName).getHostAddress();
		super.setAddress("ncacn_np:" + serverName + "[\\PIPE\\winreg]");

	}

	public JIWinRegStub(String serverName) throws UnknownHostException
	{
		super();
		super.setTransportFactory(new rpc.ncacn_np.TransportFactory());
		super.setProperties(new Properties());
		super.getProperties().setProperty("rpc.ntlm.sso", "true");
		serverName = serverName.trim();
		serverName = InetAddress.getByName(serverName).getHostAddress();
		super.setAddress("ncacn_np:" + serverName + "[\\PIPE\\winreg]");

	}

	
	public JIPolicyHandle winreg_OpenHKLM() throws JIException
	{
		openHKLM openhklm = new openHKLM();
		JIPolicyHandle handle = new JIPolicyHandle(false);
		try {
			call(Endpoint.IDEMPOTENT,openhklm);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.JI_WINREG_EXCEPTION,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		System.arraycopy(openhklm.policyhandle,0,handle.handle,0,20);

		return handle;
	}

	public JIPolicyHandle winreg_OpenHKCR() throws JIException
	{
		openHKCR openhkcr = new openHKCR();
		JIPolicyHandle handle = new JIPolicyHandle(false);
		try {
			call(Endpoint.IDEMPOTENT,openhkcr);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.JI_WINREG_EXCEPTION,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		System.arraycopy(openhkcr.policyhandle,0,handle.handle,0,20);

		return handle;
	}

	public JIPolicyHandle winreg_OpenHKCU() throws JIException
	{
		openHKCU openhkcu = new openHKCU();
		JIPolicyHandle handle = new JIPolicyHandle(false);
		try {
			call(Endpoint.IDEMPOTENT,openhkcu);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.JI_WINREG_EXCEPTION,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		System.arraycopy(openhkcu.policyhandle,0,handle.handle,0,20);

		return handle;
	}

	public JIPolicyHandle winreg_OpenHKU() throws JIException
	{
		openHKU openhku = new openHKU();
		JIPolicyHandle handle = new JIPolicyHandle(false);
		try {
			call(Endpoint.IDEMPOTENT,openhku);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.JI_WINREG_EXCEPTION,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		System.arraycopy(openhku.policyhandle,0,handle.handle,0,20);

		return handle;
	}
	public JIPolicyHandle winreg_OpenKey(JIPolicyHandle handle,String key, int accessMask) throws JIException
	{
		openKey openkey = new openKey();
		openkey.accessMask = accessMask;
		openkey.key = key;
		openkey.parentKey = handle;
		JIPolicyHandle newHandle = new JIPolicyHandle(false);
		try {
			call(Endpoint.IDEMPOTENT,openkey);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		System.arraycopy(openkey.policyhandle,0,newHandle.handle,0,20);

		return newHandle;
	}


	public void winreg_CloseKey(JIPolicyHandle handle) throws JIException
	{
		closeKey closekey = new closeKey();
		closekey.key = handle;
		try {
			call(Endpoint.IDEMPOTENT,closekey);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}
	}

	public void winreg_DeleteKeyOrValue(JIPolicyHandle handle,String valueName, boolean isKey) throws JIException
	{
		deleteValueOrKey delete = new deleteValueOrKey();
		delete.parentKey = handle;
		delete.valueName = valueName;
		delete.isKey = isKey;
		try {
			call(Endpoint.IDEMPOTENT,delete);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}
	}

	public byte[] winreg_QueryValue(JIPolicyHandle handle,int bufferSize) throws JIException
	{
		queryValue queryvalue = new queryValue();
		queryvalue.parentKey = handle;
		queryvalue.bufferLength = bufferSize;
		try {
			call(Endpoint.IDEMPOTENT,queryvalue);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		//return queryvalue.key;
		return queryvalue.buffer;
	}

	public Object[] winreg_QueryValue(JIPolicyHandle handle,String valueName,int bufferSize) throws JIException
	{
		queryValue queryvalue = new queryValue();
		queryvalue.parentKey = handle;
		queryvalue.bufferLength = bufferSize;
		queryvalue.key = valueName;

		try {
			call(Endpoint.IDEMPOTENT,queryvalue);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		return new Object[]{new Integer(queryvalue.type),(queryvalue.buffer != null ? (Object)queryvalue.buffer : (Object)queryvalue.buffer2)};
	}

	public void winreg_SaveFile(JIPolicyHandle handle, String fileName) throws JIException
	{
		saveFile savefile = new saveFile();
		savefile.parentKey = handle;
		savefile.fileName = fileName;

		try {
			call(Endpoint.IDEMPOTENT,savefile);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

	}

	public JIPolicyHandle winreg_CreateKey(JIPolicyHandle handle, String subKey, int options,int accessMask) throws JIException
	{
		createKey createkey = new createKey();
		createkey.accessMask = accessMask;
		createkey.key = subKey;
		createkey.parentKey = handle;
		createkey.options = options;

		try {
			call(Endpoint.IDEMPOTENT,createkey);
		} catch(SmbException e){
			throw new JIException(e.getNtStatus(),e);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		JIPolicyHandle newHandle = new JIPolicyHandle(createkey.actiontaken == 1 ? true : false);
		System.arraycopy(createkey.policyhandle,0,newHandle.handle,0,20);

		return newHandle;
	}

	public void winreg_SetValue(JIPolicyHandle handle,String valueName,byte[][] data) throws JIException
	{
		if (data == null)
		{
			throw new IllegalArgumentException(JISystem.getLocalizedMessage(JIErrorCodes.JI_WINREG_EXCEPTION5));
		}

		//calculate length of all strings + extra null in the end
		int totalStrings = data.length;
		int length = 0;
		for (int i = 0;i < totalStrings;i++)
		{
			int j = data[i].length;
			length = length + (j + 1) * 2; //including null termination
		}

		length = length + 2; //final termination

		setValue setvalue = new setValue();
		setvalue.clazzType = REG_MULTI_SZ;
		setvalue.data2 = data;
		setvalue.lengthInBytes = length;
		setvalue.parentKey = handle;
		setvalue.valueName = valueName;
		setValue(setvalue);
	}

	public void winreg_SetValue(JIPolicyHandle handle,String valueName) throws JIException
	{
		setValue setvalue = new setValue();
		setvalue.clazzType = REG_NONE;
		setvalue.parentKey = handle;
		setvalue.valueName = valueName;
		setValue(setvalue);
	}

	public void winreg_SetValue(JIPolicyHandle handle,String valueName, byte[] data, boolean isBinary, boolean expand_sz) throws JIException
	{
		setValue setvalue = new setValue();
		if (isBinary)
		{
			setvalue.clazzType = REG_BINARY;
		}
		else
		{
			if (expand_sz)
			{
				setvalue.clazzType = REG_EXPAND_SZ;
			}
			else
			{
				setvalue.clazzType = REG_SZ;
			}
		}

		setvalue.data = data;
		setvalue.lengthInBytes = data.length;
		setvalue.parentKey = handle;
		setvalue.valueName = valueName;
		setValue(setvalue);
	}

	public void winreg_SetValue(JIPolicyHandle handle,String valueName, int data) throws JIException
	{
		setValue setvalue = new setValue();
		setvalue.clazzType = REG_DWORD;
		setvalue.lengthInBytes = 4;
		setvalue.dword = data;
		setvalue.parentKey = handle;
		setvalue.valueName = valueName;
		setValue(setvalue);
	}

	public String[] winreg_EnumKey(JIPolicyHandle handle,int index) throws JIException
	{
		enumKey enumkey = new enumKey();
		enumkey.parentKey = handle;
		enumkey.index = index;

		try {
			call(Endpoint.IDEMPOTENT,enumkey);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		return enumkey.retval;
	}

	public Object[] winreg_EnumValue(JIPolicyHandle handle,int index) throws JIException
	{
		enumValue enumvalue = new enumValue();
		enumvalue.parentKey = handle;
		enumvalue.index = index;

		try {
			call(Endpoint.IDEMPOTENT,enumvalue);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}

		return enumvalue.retval;
	}

	private void setValue(setValue setvalue) throws JIException
	{
		try {
			call(Endpoint.IDEMPOTENT,setvalue);
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		} catch (JIRuntimeException e) {
			throw new JIException(e);
		}
	}

	protected String getSyntax() {
		// WinReg Service
		return "338cd001-2244-31f1-aaaa-900038001003:1.0";
	}

	public void closeConnection() throws JIException {
		try {
			super.detach();
		} catch (IOException e) {
			throw new JIException(JIErrorCodes.RPC_E_UNEXPECTED,e);
		}
	}

}