WinProcessEnumerator/Wmi.h at main · freezerdev/WinProcessEnumerator · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
#pragma once

#include "Str.h"
#include <comdef.h>
#include <wbemidl.h>
#include <string>
#include <vector>

static PCWSTR g_szCimV2Namespace = L"root\\cimv2";

// Forward declarations
class CWmiClass;
class CWmiService;

//#################################################################################################
class CWmiInstance final
{
	friend class CWmiClass;

public:
	CWmiInstance(void);
	CWmiInstance(const CWmiInstance &src);
	CWmiInstance(CWmiInstance &&src) noexcept;
	~CWmiInstance(void);

	CWmiInstance &operator=(const CWmiInstance &src);
	CWmiInstance &operator=(CWmiInstance &&src) noexcept;

	void Close(void);

	_variant_t Get(PCWSTR szProperty) const;
	VARTYPE GetType(PCWSTR szProperty) const;

	// Returns the property value only if the property type matches the requested type and it is not an array
	bool GetBool(PCWSTR szProperty) const;
	int64_t GetInteger(PCWSTR szProperty) const;
	uint64_t GetUInteger(PCWSTR szProperty) const;
	double GetDouble(PCWSTR szProperty) const;
	CStrW GetString(PCWSTR szProperty) const;

	// Returns the property value converting from other property types if necessary but only if it is not an array
	bool GetAsBool(PCWSTR szProperty) const;
	int64_t GetAsInteger(PCWSTR szProperty) const;
	uint64_t GetAsUInteger(PCWSTR szProperty) const;
	double GetAsDouble(PCWSTR szProperty) const;
	CStrW GetAsString(PCWSTR szProperty) const;

	// Returns the property value only if the property type matches the requested type
	std::vector<bool> GetBoolVector(PCWSTR szProperty) const;
	std::vector<int64_t> GetIntegerVector(PCWSTR szProperty) const;
	std::vector<uint64_t> GetUIntegerVector(PCWSTR szProperty) const;
	std::vector<double> GetDoubleVector(PCWSTR szProperty) const;
	std::vector<CStrW> GetStringVector(PCWSTR szProperty) const;

	// Returns the property value converting from other property types if necessary
	std::vector<bool> GetAsBoolVector(PCWSTR szProperty) const;
	std::vector<int64_t> GetAsIntegerVector(PCWSTR szProperty) const;
	std::vector<uint64_t> GetAsUIntegerVector(PCWSTR szProperty) const;
	std::vector<double> GetAsDoubleVector(PCWSTR szProperty) const;
	std::vector<CStrW> GetAsStringVector(PCWSTR szProperty) const;

	bool IsOpen(void) const noexcept;

private:
	IWbemClassObject *m_pClass;
};


//#################################################################################################
class CWmiClass final
{
	friend class CWmiService;

public:
	CWmiClass(void);
	CWmiClass(const CWmiClass &src);
	CWmiClass(CWmiClass &&src) noexcept;
	~CWmiClass(void);

	CWmiClass &operator=(const CWmiClass &src);
	CWmiClass &operator=(CWmiClass &&src) noexcept;

	void Close(void);

	bool IsOpen(void) const noexcept;

	CWmiInstance GetFirstInstance(void) const;
	CWmiInstance GetNextInstance(void) const;

private:
	IEnumWbemClassObject *m_pClassEnumerator;
};


//#################################################################################################
class CWmiService final
{
public:
	CWmiService(void);
	CWmiService(const CWmiService &src);
	CWmiService(CWmiService &&src) noexcept;
	explicit CWmiService(PCWSTR szNamespace);
	~CWmiService(void);

	CWmiService &operator=(const CWmiService &src);
	CWmiService &operator=(CWmiService &&src) noexcept;

	HRESULT Open(PCWSTR szNamespace = g_szCimV2Namespace, const DWORD dwAuthnLevel = RPC_C_AUTHN_LEVEL_DEFAULT);
	void Close(void);

	bool IsOpen(void) const noexcept;

	CWmiClass GetClass(PCWSTR szClassName) const;
	CWmiClass GetClass(PCWSTR szClassName, const std::vector<CStrW> &vecProperties) const;

	template<typename ...ARGS>
	CWmiClass GetClassFormat(PCWSTR szClassName, const ARGS&... args) const
	{
		CWmiClass wmiClass;

		if(m_pService)
		{
			const std::wstring arrArgs[] = {ToString(args)...};
			size_t nArgsCount = sizeof...(args);

			CStrW strQuery(L"select ");
			if(nArgsCount == 0)
				strQuery += L'*';
			else
			{
				bool bFirst = true;
				for(size_t n = 0; n < nArgsCount; ++n)
				{
					if(!bFirst)
						strQuery += L", ";

					strQuery += arrArgs[n].c_str();
					bFirst = false;
				}
			}
			strQuery += L" from ";
			strQuery += szClassName;

			BSTR bstrWql = SysAllocString(L"WQL");
			if(bstrWql)
			{
				BSTR bstrQuery = SysAllocString(strQuery);
				if(bstrQuery)
				{
					m_pService->ExecQuery(bstrWql, bstrQuery, WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, nullptr, &wmiClass.m_pClassEnumerator);
					SysFreeString(bstrQuery);
				}

				SysFreeString(bstrWql);
			}
		}

		return wmiClass;
	}

	CWmiClass GetClassByQuery(PCWSTR szQuery) const;

private:
	IWbemLocator *m_pLocator;
	IWbemServices *m_pService;

	template<typename T>
	static std::wstring ToString(const T &val)
	{
		std::wostringstream stream;
		stream << val;
		return stream.str();
	}
};