errors.hpp

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/* 
 * Confdump-Agent - Dump static and runtime system configuration
 * Copyright (C) 2009-2012  Straton IT, SAS
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef INCLUDED_CONFDUMP_SYSTEM_WMI_CHECKEDCALLS_HPP
#define INCLUDED_CONFDUMP_SYSTEM_WMI_CHECKEDCALLS_HPP

#include <comdef.h>

#include "boost/shared_ptr.hpp"
#include "boost/bind.hpp"
#include "QString"

#include "Confdump/RuntimeError.hpp"

struct IErrorInfo;

namespace Confdump
{
namespace System
{
namespace Wmi
{

template<class T>
boost::shared_ptr<T> guardComObject( T *ptr )
{
    /* Exception safety notes: shared_ptr may throw a bad_alloc, in that case
     * Release is called.
     */
        return boost::shared_ptr<T>( ptr, boost::bind( &T::Release, _1 ) );
}


class Win32Error : public RuntimeError
{
public:
    Win32Error( QString message, HRESULT hr );
    virtual ~Win32Error();

    HRESULT hresult() const;
    QString hresultAsHex() const;

public:
    Win32Error();

    HRESULT hresult_;
};

class ComError : public Win32Error
{
public:
    ComError( HRESULT hr, QString action );
    virtual ~ComError();

    QString errorMessage() const;

private:
    ComError();

    _com_error comError_;
};

class WmiError : public Win32Error
{
public:
    WmiError( QString statusDump, HRESULT hr, QString action );
    virtual ~WmiError();

private:
    WmiError();
};

void throwOnComError( HRESULT hr, QString action );

void throwOnWmiError( HRESULT hr, QString action, QString element = QString() );

class WmiDiagnostics
{
        HRESULT hr_;
        QString cause_;

        WmiDiagnostics();
        
public:
        WmiDiagnostics( HRESULT hr );
        bool knownError() const;
        QString toString() const;
};


}
}
}

#endif /* INCLUDED_CONFDUMP_SYSTEM_WMI_CHECKEDCALLS_HPP */