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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
#include "common.h"
#ifdef FEATURE_CAS_POLICY
#include "hostexecutioncontext.h"
#include "corhost.h"
#include "security.h"
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
IHostSecurityContext *HostExecutionContextManager::m_pRestrictedHostContext = NULL;
#endif // FEATURE_INCLUDE_ALL_INTERFACES
// initialize HostRestrictedContext
void HostExecutionContextManager::InitializeRestrictedContext()
{
CONTRACTL
{
NOTHROW;
GC_NOTRIGGER;
MODE_ANY;
SO_TOLERANT;
}
CONTRACTL_END;
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
_ASSERTE(m_pRestrictedHostContext == NULL);
IHostSecurityManager *pSM = CorHost2::GetHostSecurityManager();
if (pSM)
{
BEGIN_SO_TOLERANT_CODE_CALLING_HOST(GetThread());
pSM->GetSecurityContext(eRestrictedContext, &m_pRestrictedHostContext);
END_SO_TOLERANT_CODE_CALLING_HOST;
}
#endif // FEATURE_INCLUDE_ALL_INTERFACES
}
// notify the Host to SetRestrictedContext
void HostExecutionContextManager::SetHostRestrictedContext()
{
CONTRACTL
{
NOTHROW;
GC_NOTRIGGER;
MODE_ANY;
}
CONTRACTL_END;
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
if(m_pRestrictedHostContext != NULL)
{
IHostSecurityManager *pSM = CorHost2::GetHostSecurityManager();
if (pSM)
{
BEGIN_SO_TOLERANT_CODE_CALLING_HOST(GetThread());
pSM->SetSecurityContext(eRestrictedContext, m_pRestrictedHostContext);
END_SO_TOLERANT_CODE_CALLING_HOST;
}
}
#endif // FEATURE_INCLUDE_ALL_INTERFACES
}
FCIMPL0(FC_BOOL_RET, HostExecutionContextManager::HostPresent)
{
FCALL_CONTRACT;
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
FC_RETURN_BOOL(CorHost2::GetHostSecurityManager() != NULL);
#else // !FEATURE_INCLUDE_ALL_INTERFACES
FC_RETURN_BOOL(FALSE);
#endif // FEATURE_INCLUDE_ALL_INTERFACES
}
FCIMPLEND
FCIMPL1(HRESULT, HostExecutionContextManager::ReleaseSecurityContext, LPVOID handle)
{
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(handle));
} CONTRACTL_END;
HELPER_METHOD_FRAME_BEGIN_RET_NOPOLL();
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
IHostSecurityManager *pSM = CorHost2::GetHostSecurityManager();
if (pSM)
{
// get the IUnknown pointer from handle
IHostSecurityContext* pSecurityContext = (IHostSecurityContext*)handle;
// null out the IUnknown pointer in the handle
//hTokenSAFE->SetHandle((void*)NULL);
// release the IUnknown pointer if it is non null
if (pSecurityContext != NULL)
{
pSecurityContext->Release();
}
}
#endif // FEATURE_INCLUDE_ALL_INTERFACES
HELPER_METHOD_FRAME_END();
return S_OK;
}
FCIMPLEND
FCIMPL1(HRESULT, HostExecutionContextManager::CaptureSecurityContext, SafeHandle* hTokenUNSAFE)
{
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(hTokenUNSAFE));
} CONTRACTL_END;
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
IHostSecurityContext* pCurrentHostSecurityContext = NULL;
IHostSecurityContext* pCapturedSecurityContext = NULL;
#endif // FEATURE_INCLUDE_ALL_INTERFACES
HRESULT hr = S_OK;
SAFEHANDLE hTokenSAFE = (SAFEHANDLE) hTokenUNSAFE;
HELPER_METHOD_FRAME_BEGIN_RET_1(hTokenSAFE);
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
IHostSecurityManager *pSM = CorHost2::GetHostSecurityManager();
if (pSM)
{
BEGIN_SO_TOLERANT_CODE_CALLING_HOST(GetThread());
hr = pSM->GetSecurityContext(eCurrentContext, &pCurrentHostSecurityContext);
END_SO_TOLERANT_CODE_CALLING_HOST;
if (hr == S_OK)
{
if(pCurrentHostSecurityContext != NULL)
{
BEGIN_SO_TOLERANT_CODE_CALLING_HOST(GetThread());
hr = pCurrentHostSecurityContext->Capture(&pCapturedSecurityContext);
END_SO_TOLERANT_CODE_CALLING_HOST;
hTokenSAFE->SetHandle((void*)pCapturedSecurityContext);
SafeRelease(pCurrentHostSecurityContext);
}
}
}
#endif // FEATURE_INCLUDE_ALL_INTERFACES
if (FAILED(hr))
COMPlusThrowHR(hr);
HELPER_METHOD_FRAME_END();
return hr;
}
FCIMPLEND
FCIMPL2(HRESULT, HostExecutionContextManager::CloneSecurityContext, SafeHandle* hTokenUNSAFE, SafeHandle* hTokenClonedUNSAFE)
{
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(hTokenUNSAFE));
PRECONDITION(CheckPointer(hTokenClonedUNSAFE));
} CONTRACTL_END;
SAFEHANDLE hTokenClonedSAFE = (SAFEHANDLE) hTokenClonedUNSAFE;
SAFEHANDLE hTokenSAFE = (SAFEHANDLE)hTokenUNSAFE;
HELPER_METHOD_FRAME_BEGIN_RET_2(hTokenSAFE, hTokenClonedSAFE);
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
IHostSecurityManager *pSM = CorHost2::GetHostSecurityManager();
if (pSM)
{
IHostSecurityContext* pSecurityContext = (IHostSecurityContext*)hTokenSAFE->GetHandle();
if (pSecurityContext != NULL)
{
pSecurityContext->AddRef();
hTokenClonedSAFE->SetHandle((void*)pSecurityContext);
}
}
#endif // FEATURE_INCLUDE_ALL_INTERFACES
HELPER_METHOD_FRAME_END();
return S_OK;
}
FCIMPLEND
FCIMPL3(HRESULT, HostExecutionContextManager::SetSecurityContext, SafeHandle* hTokenUNSAFE, CLR_BOOL fReturnPrevious, SafeHandle* hTokenPreviousUNSAFE)
{
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(hTokenUNSAFE));
} CONTRACTL_END;
HRESULT hr = S_OK;
SAFEHANDLE hTokenPreviousSAFE = (SAFEHANDLE) hTokenPreviousUNSAFE;
SAFEHANDLE hTokenSAFE = (SAFEHANDLE) hTokenUNSAFE;
HELPER_METHOD_FRAME_BEGIN_RET_2(hTokenSAFE, hTokenPreviousSAFE);
#ifdef FEATURE_INCLUDE_ALL_INTERFACES
IHostSecurityManager *pSM = CorHost2::GetHostSecurityManager();
if (pSM)
{
if (fReturnPrevious)
{
IHostSecurityContext* pPreviousHostSecurityContext = NULL;
BEGIN_SO_TOLERANT_CODE_CALLING_HOST(GetThread());
hr = pSM->GetSecurityContext(eCurrentContext, &pPreviousHostSecurityContext);
END_SO_TOLERANT_CODE_CALLING_HOST;
if (FAILED(hr))
COMPlusThrowHR(hr);
// store the previous host context in the safe handle
hTokenPreviousSAFE->SetHandle((void*)pPreviousHostSecurityContext);
}
BEGIN_SO_TOLERANT_CODE_CALLING_HOST(GetThread());
hr = pSM->SetSecurityContext(eCurrentContext, (IHostSecurityContext*)hTokenSAFE->GetHandle());
END_SO_TOLERANT_CODE_CALLING_HOST;
if (FAILED(hr))
COMPlusThrowHR(hr);
}
#endif // FEATURE_INCLUDE_ALL_INTERFACES
HELPER_METHOD_FRAME_END();
return hr;
}
FCIMPLEND
#endif // #ifdef FEATURE_CAS_POLICY
|
