janwas
805736cb8f
simplify detect code by adding support for WMI (the "proper" way to do things) wutsname: fix incorrect reporting of windows version ps/Util: add note on exception that is raised on Wow64 (Windows bug) This was SVN commit r5213.
112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/**
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* =========================================================================
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* File : wmi.cpp
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* Project : 0 A.D.
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* Description : wrapper for Windows Management Instrumentation
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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#include "precompiled.h"
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#include "wmi.h"
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#include <wbemidl.h>
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#include "winit.h"
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#pragma comment(lib, "wbemuuid.lib")
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WINIT_REGISTER_EARLY_INIT(wmi_Init);
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WINIT_REGISTER_EARLY_SHUTDOWN(wmi_Shutdown);
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static IWbemLocator* pLoc;
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static IWbemServices* pSvc;
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static LibError wmi_Init()
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{
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HRESULT hr;
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// initializing with COINIT_MULTITHREADED causes the (unchanged) value of
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// pSvc to be invalid by the time wmi_Shutdown is reached. the cause is
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// unclear (maybe another DLL already doing CoUninitialize?), but using
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// single-threaded apartment mode (the default) avoids it.
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hr = CoInitialize(0);
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if(FAILED(hr))
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WARN_RETURN(ERR::_1);
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hr = CoInitializeSecurity(0, -1, 0, 0, RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, 0, EOAC_NONE, 0);
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if(FAILED(hr))
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WARN_RETURN(ERR::_2);
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hr = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (void**)&pLoc);
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if(FAILED(hr))
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WARN_RETURN(ERR::_3);
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hr = pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), 0, 0, 0, 0, 0, 0, &pSvc);
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if(FAILED(hr))
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WARN_RETURN(ERR::_4);
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hr = CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, 0, RPC_C_AUTHN_LEVEL_CALL, RPC_C_IMP_LEVEL_IMPERSONATE, 0, EOAC_NONE);
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if(FAILED(hr))
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WARN_RETURN(ERR::_5);
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return INFO::OK;
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}
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static LibError wmi_Shutdown()
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{
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pSvc->Release();
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pLoc->Release();
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CoUninitialize();
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return INFO::OK;
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}
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LibError wmi_GetClass(const char* className, WmiMap& wmiMap)
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{
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HRESULT hr;
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IEnumWbemClassObject* pEnum = 0;
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char query[200];
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sprintf_s(query, ARRAY_SIZE(query), "SELECT * FROM %s", className);
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hr = pSvc->ExecQuery(L"WQL", _bstr_t(query), WBEM_FLAG_FORWARD_ONLY|WBEM_FLAG_RETURN_IMMEDIATELY, 0, &pEnum);
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if(FAILED(hr))
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WARN_RETURN(ERR::FAIL);
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debug_assert(pEnum);
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for(;;)
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{
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IWbemClassObject* pObj = 0;
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ULONG numReturned = 0;
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hr = pEnum->Next(WBEM_INFINITE, 1, &pObj, &numReturned);
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if(FAILED(hr))
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WARN_RETURN(ERR::FAIL);
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if(numReturned == 0)
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break;
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debug_assert(pEnum);
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pObj->BeginEnumeration(WBEM_FLAG_NONSYSTEM_ONLY);
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for(;;)
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{
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BSTR name;
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VARIANT value;
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VariantInit(&value);
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if(pObj->Next(0, &name, &value, 0, 0) != WBEM_S_NO_ERROR)
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{
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SysFreeString(name);
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break;
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}
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wmiMap[name] = value;
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SysFreeString(name);
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}
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pObj->Release();
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}
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pEnum->Release();
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return INFO::OK;
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}
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