-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathjmpswapdetour.h
79 lines (66 loc) · 2.47 KB
/
jmpswapdetour.h
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
//////////////////////////////////////////////////////////////////////////
// Very Simple Jmp and Swap Detour Class for MSVC++
//
// Copyright (c) 2010-2012 Harry Pidcock
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// 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 AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//////////////////////////////////////////////////////////////////////////
// Note:
// This class is only to be used when you know that only 1 thread will
// be calling the detoured function at any time.
// If you want to have thread safe detours. Use Microsoft Detour Library.
#ifndef __JMPSWAPDETOUR_H__
#define __JMPSWAPDETOUR_H__
class CJmpSwapDetour
{
public:
CJmpSwapDetour(void *function, void *detour);
virtual ~CJmpSwapDetour(void);
// Swap between our detour and original function.
// Because of this, we are not thread-safe.
void Swap(void);
// Get the detoured function.
template<typename T>
T GetTarget(void) const
{
return (T)m_Target;
};
// Get the detour function.
template<typename T>
T GetDetour(void) const
{
return (T)m_Detour;
};
private:
bool m_bDetoured;
void *m_OriginalBytes;
void *m_Target;
void *m_Detour;
void *m_Jmp;
size_t m_JmpSize;
size_t m_FunctionSize;
void BuildJump(void *target);
bool MatchSigMask(void *memory, const void *sig, size_t sigLength, const char *mask) const;
size_t GetFunctionSize(void *function) const;
void *FollowJmp(void *ptr) const;
};
#endif // __JMPSWAPDETOUR_H__