Environment_WIN32.cpp

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//
// Environment_WIN32.cpp
//
// $Id: //poco/1.3/Foundation/src/Environment_WIN32.cpp#5 $
//
// Library: Foundation
// Package: Core
// Module:  Environment
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/Environment_WIN32.h"
#include "Poco/Exception.h"
#include <sstream>
#include <cstring>
#include "Poco/UnWindows.h"
#include <iphlpapi.h>


namespace Poco {


std::string EnvironmentImpl::getImpl(const std::string& name)
{
        DWORD len = GetEnvironmentVariableA(name.c_str(), 0, 0);
        if (len == 0) throw NotFoundException(name);
        char* buffer = new char[len];
        GetEnvironmentVariableA(name.c_str(), buffer, len);
        std::string result(buffer);
        delete [] buffer;
        return result;
}


bool EnvironmentImpl::hasImpl(const std::string& name)
{
        DWORD len = GetEnvironmentVariableA(name.c_str(), 0, 0);
        return len > 0;
}


void EnvironmentImpl::setImpl(const std::string& name, const std::string& value)
{
        if (SetEnvironmentVariableA(name.c_str(), value.c_str()) == 0)
        {
                std::string msg = "cannot set environment variable: ";
                msg.append(name);
                throw SystemException(msg);
        }
}


std::string EnvironmentImpl::osNameImpl()
{
        OSVERSIONINFO vi;
        vi.dwOSVersionInfoSize = sizeof(vi);
        if (GetVersionEx(&vi) == 0) throw SystemException("Cannot get OS version information");
        switch (vi.dwPlatformId)
        {
        case VER_PLATFORM_WIN32s:
                return "Windows 3.x";
        case VER_PLATFORM_WIN32_WINDOWS:
                return vi.dwMinorVersion == 0 ? "Windows 95" : "Windows 98";
        case VER_PLATFORM_WIN32_NT:
                return "Windows NT";
        default:
                return "Unknown";
        }
}


std::string EnvironmentImpl::osVersionImpl()
{
        OSVERSIONINFO vi;
        vi.dwOSVersionInfoSize = sizeof(vi);
        if (GetVersionEx(&vi) == 0) throw SystemException("Cannot get OS version information");
        std::ostringstream str;
        str << vi.dwMajorVersion << "." << vi.dwMinorVersion << " (Build " << (vi.dwBuildNumber & 0xFFFF);
        if (vi.szCSDVersion[0]) str << ": " << vi.szCSDVersion;
        str << ")";
        return str.str();
}


std::string EnvironmentImpl::osArchitectureImpl()
{
        SYSTEM_INFO si;
        GetSystemInfo(&si);
        switch (si.wProcessorArchitecture)
        {
        case PROCESSOR_ARCHITECTURE_INTEL:
                return "IA32";
        case PROCESSOR_ARCHITECTURE_MIPS:
                return "MIPS";
        case PROCESSOR_ARCHITECTURE_ALPHA:
                return "ALPHA";
        case PROCESSOR_ARCHITECTURE_PPC:
                return "PPC";
        case PROCESSOR_ARCHITECTURE_IA64:
                return "IA64";
#ifdef PROCESSOR_ARCHITECTURE_IA32_ON_WIN64
        case PROCESSOR_ARCHITECTURE_IA32_ON_WIN64:
                return "IA64/32";
#endif
#ifdef PROCESSOR_ARCHITECTURE_AMD64
        case PROCESSOR_ARCHITECTURE_AMD64:
                return "AMD64";
#endif
        default:
                return "Unknown";
        }
}


std::string EnvironmentImpl::nodeNameImpl()
{
        char name[MAX_COMPUTERNAME_LENGTH + 1];
        DWORD size = sizeof(name);
        if (GetComputerNameA(name, &size) == 0) throw SystemException("Cannot get computer name");
        return std::string(name);
}


void EnvironmentImpl::nodeIdImpl(NodeId& id)
{
        PIP_ADAPTER_INFO pAdapterInfo;
        PIP_ADAPTER_INFO pAdapter = 0;
        ULONG len    = sizeof(IP_ADAPTER_INFO);
        pAdapterInfo = reinterpret_cast<IP_ADAPTER_INFO*>(new char[len]);
        // Make an initial call to GetAdaptersInfo to get
        // the necessary size into len
        DWORD rc = GetAdaptersInfo(pAdapterInfo, &len);
        if (rc == ERROR_BUFFER_OVERFLOW) 
        {
                delete [] reinterpret_cast<char*>(pAdapterInfo);
                pAdapterInfo = reinterpret_cast<IP_ADAPTER_INFO*>(new char[len]);
        }
        else if (rc != ERROR_SUCCESS)
        {
                throw SystemException("cannot get network adapter list");
        }
        try
        {
                bool found = false;
                if (GetAdaptersInfo(pAdapterInfo, &len) == NO_ERROR) 
                {
                        pAdapter = pAdapterInfo;
                        while (pAdapter && !found) 
                        {
                                if (pAdapter->Type == MIB_IF_TYPE_ETHERNET && pAdapter->AddressLength == sizeof(id))
                                {
                                        std::memcpy(&id, pAdapter->Address, pAdapter->AddressLength);
                                        found = true;
                                }
                                pAdapter = pAdapter->Next;
                        }
                }
                else throw SystemException("cannot get network adapter list");
                if (!found) throw SystemException("no Ethernet adapter found");
        }
        catch (Exception&)
        {
                delete [] reinterpret_cast<char*>(pAdapterInfo);
                throw;
        }
        delete [] reinterpret_cast<char*>(pAdapterInfo);
}


} // namespace Poco