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diff --git a/src/samples/Dtf/Tools/SfxCA/EmbeddedUI.cpp b/src/samples/Dtf/Tools/SfxCA/EmbeddedUI.cpp
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1// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
2
3#include "precomp.h"
4#include "SfxUtil.h"
5
6// Globals for keeping track of things across UI messages.
7static const wchar_t* g_szWorkingDir;
8static ICorRuntimeHost* g_pClrHost;
9static _AppDomain* g_pAppDomain;
10static _MethodInfo* g_pProcessMessageMethod;
11static _MethodInfo* g_pShutdownMethod;
12
13// Reserve extra space for strings to be replaced at build time.
14#define NULLSPACE \
15L"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" \
16L"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" \
17L"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" \
18L"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
19
20// Prototypes for local functions.
21// See the function definitions for comments.
22
23bool InvokeInitializeMethod(_MethodInfo* pInitMethod, MSIHANDLE hSession,
24 const wchar_t* szClassName, LPDWORD pdwInternalUILevel, UINT* puiResult);
25
26/// <summary>
27/// First entry-point for the UI DLL when loaded and called by MSI.
28/// Extracts the payload, hosts the CLR, and invokes the managed
29/// initialize method.
30/// </summary>
31/// <param name="hSession">Handle to the installer session,
32/// used for logging errors and to be passed on to the managed initialize method.</param>
33/// <param name="szResourcePath">Path the directory where resources from the MsiEmbeddedUI table
34/// have been extracted, and where additional payload from this package will be extracted.</param>
35/// <param name="pdwInternalUILevel">MSI install UI level passed to and returned from
36/// the managed initialize method.</param>
37extern "C"
38UINT __stdcall InitializeEmbeddedUI(MSIHANDLE hSession, LPCWSTR szResourcePath, LPDWORD pdwInternalUILevel)
39{
40 // If the managed initialize method cannot be called, continue the installation in BASIC UI mode.
41 UINT uiResult = INSTALLUILEVEL_BASIC;
42
43 const wchar_t* szClassName = L"InitializeEmbeddedUI_FullClassName" NULLSPACE;
44
45 g_szWorkingDir = szResourcePath;
46
47 wchar_t szModule[MAX_PATH];
48 DWORD cchCopied = GetModuleFileName(g_hModule, szModule, MAX_PATH - 1);
49 if (cchCopied == 0)
50 {
51 Log(hSession, L"Failed to get module path. Error code %d.", GetLastError());
52 return uiResult;
53 }
54 else if (cchCopied == MAX_PATH - 1)
55 {
56 Log(hSession, L"Failed to get module path -- path is too long.");
57 return uiResult;
58 }
59
60 Log(hSession, L"Extracting embedded UI to temporary directory: %s", g_szWorkingDir);
61 int err = ExtractCabinet(szModule, g_szWorkingDir);
62 if (err != 0)
63 {
64 Log(hSession, L"Failed to extract to temporary directory. Cabinet error code %d.", err);
65 Log(hSession, L"Ensure that no MsiEmbeddedUI.FileName values are the same as "
66 L"any file contained in the embedded UI package.");
67 return uiResult;
68 }
69
70 wchar_t szConfigFilePath[MAX_PATH + 20];
71 StringCchCopy(szConfigFilePath, MAX_PATH + 20, g_szWorkingDir);
72 StringCchCat(szConfigFilePath, MAX_PATH + 20, L"\\EmbeddedUI.config");
73
74 const wchar_t* szConfigFile = szConfigFilePath;
75 if (!PathFileExists(szConfigFilePath))
76 {
77 szConfigFile = NULL;
78 }
79
80 wchar_t szWIAssembly[MAX_PATH + 50];
81 StringCchCopy(szWIAssembly, MAX_PATH + 50, g_szWorkingDir);
82 StringCchCat(szWIAssembly, MAX_PATH + 50, L"\\WixToolset.Dtf.WindowsInstaller.dll");
83
84 if (LoadCLR(hSession, NULL, szConfigFile, szWIAssembly, &g_pClrHost))
85 {
86 if (CreateAppDomain(hSession, g_pClrHost, L"EmbeddedUI", g_szWorkingDir,
87 szConfigFile, &g_pAppDomain))
88 {
89 const wchar_t* szMsiAssemblyName = L"WixToolset.Dtf.WindowsInstaller";
90 const wchar_t* szProxyClass = L"WixToolset.Dtf.WindowsInstaller.EmbeddedUIProxy";
91 const wchar_t* szInitMethod = L"Initialize";
92 const wchar_t* szProcessMessageMethod = L"ProcessMessage";
93 const wchar_t* szShutdownMethod = L"Shutdown";
94
95 if (GetMethod(hSession, g_pAppDomain, szMsiAssemblyName,
96 szProxyClass, szProcessMessageMethod, &g_pProcessMessageMethod) &&
97 GetMethod(hSession, g_pAppDomain, szMsiAssemblyName,
98 szProxyClass, szShutdownMethod, &g_pShutdownMethod))
99 {
100 _MethodInfo* pInitMethod;
101 if (GetMethod(hSession, g_pAppDomain, szMsiAssemblyName,
102 szProxyClass, szInitMethod, &pInitMethod))
103 {
104 bool invokeSuccess = InvokeInitializeMethod(pInitMethod, hSession, szClassName, pdwInternalUILevel, &uiResult);
105 pInitMethod->Release();
106 if (invokeSuccess)
107 {
108 if (uiResult == 0)
109 {
110 return ERROR_SUCCESS;
111 }
112 else if (uiResult == ERROR_INSTALL_USEREXIT)
113 {
114 // InitializeEmbeddedUI is not allowed to return ERROR_INSTALL_USEREXIT.
115 // So return success here and then IDCANCEL on the next progress message.
116 uiResult = 0;
117 *pdwInternalUILevel = INSTALLUILEVEL_NONE;
118 Log(hSession, L"Initialization canceled by user.");
119 }
120 }
121 }
122 }
123
124 g_pProcessMessageMethod->Release();
125 g_pProcessMessageMethod = NULL;
126 g_pShutdownMethod->Release();
127 g_pShutdownMethod = NULL;
128
129 g_pClrHost->UnloadDomain(g_pAppDomain);
130 g_pAppDomain->Release();
131 g_pAppDomain = NULL;
132 }
133 g_pClrHost->Stop();
134 g_pClrHost->Release();
135 g_pClrHost = NULL;
136 }
137
138 return uiResult;
139}
140
141/// <summary>
142/// Entry-point for UI progress messages received from the MSI engine during an active installation.
143/// Forwards the progress messages to the managed handler method and returns its result.
144/// </summary>
145extern "C"
146INT __stdcall EmbeddedUIHandler(UINT uiMessageType, MSIHANDLE hRecord)
147{
148 if (g_pProcessMessageMethod == NULL)
149 {
150 // Initialization was canceled.
151 return IDCANCEL;
152 }
153
154 VARIANT vResult;
155 VariantInit(&vResult);
156
157 VARIANT vNull;
158 vNull.vt = VT_EMPTY;
159
160 SAFEARRAY* saArgs = SafeArrayCreateVector(VT_VARIANT, 0, 2);
161 VARIANT vMessageType;
162 vMessageType.vt = VT_I4;
163 vMessageType.lVal = (LONG) uiMessageType;
164 LONG index = 0;
165 HRESULT hr = SafeArrayPutElement(saArgs, &index, &vMessageType);
166 if (FAILED(hr)) goto LExit;
167 VARIANT vRecord;
168 vRecord.vt = VT_I4;
169 vRecord.lVal = (LONG) hRecord;
170 index = 1;
171 hr = SafeArrayPutElement(saArgs, &index, &vRecord);
172 if (FAILED(hr)) goto LExit;
173
174 hr = g_pProcessMessageMethod->Invoke_3(vNull, saArgs, &vResult);
175
176LExit:
177 SafeArrayDestroy(saArgs);
178 if (SUCCEEDED(hr))
179 {
180 return vResult.intVal;
181 }
182 else
183 {
184 return -1;
185 }
186}
187
188/// <summary>
189/// Entry-point for the UI shutdown message received from the MSI engine after installation has completed.
190/// Forwards the shutdown message to the managed shutdown method, then shuts down the CLR.
191/// </summary>
192extern "C"
193DWORD __stdcall ShutdownEmbeddedUI()
194{
195 if (g_pShutdownMethod != NULL)
196 {
197 VARIANT vNull;
198 vNull.vt = VT_EMPTY;
199 SAFEARRAY* saArgs = SafeArrayCreateVector(VT_VARIANT, 0, 0);
200 g_pShutdownMethod->Invoke_3(vNull, saArgs, NULL);
201 SafeArrayDestroy(saArgs);
202
203 g_pClrHost->UnloadDomain(g_pAppDomain);
204 g_pAppDomain->Release();
205 g_pClrHost->Stop();
206 g_pClrHost->Release();
207 }
208
209 return 0;
210}
211
212/// <summary>
213/// Loads and invokes the managed portion of the proxy.
214/// </summary>
215/// <param name="pInitMethod">Managed initialize method to be invoked.</param>
216/// <param name="hSession">Handle to the installer session,
217/// used for logging errors and to be passed on to the managed initialize method.</param>
218/// <param name="szClassName">Name of the UI class to be loaded.
219/// This must be of the form: AssemblyName!Namespace.Class</param>
220/// <param name="pdwInternalUILevel">MSI install UI level passed to and returned from
221/// the managed initialize method.</param>
222/// <param name="puiResult">Return value of the invoked initialize method.</param>
223/// <returns>True if the managed proxy was invoked successfully, or an
224/// error code if there was some error. Note the initialize method itself may
225/// return an error via puiResult while this method still returns true
226/// since the invocation was successful.</returns>
227bool InvokeInitializeMethod(_MethodInfo* pInitMethod, MSIHANDLE hSession, const wchar_t* szClassName, LPDWORD pdwInternalUILevel, UINT* puiResult)
228{
229 VARIANT vResult;
230 VariantInit(&vResult);
231
232 VARIANT vNull;
233 vNull.vt = VT_EMPTY;
234
235 SAFEARRAY* saArgs = SafeArrayCreateVector(VT_VARIANT, 0, 3);
236 VARIANT vSessionHandle;
237 vSessionHandle.vt = VT_I4;
238 vSessionHandle.lVal = (LONG) hSession;
239 LONG index = 0;
240 HRESULT hr = SafeArrayPutElement(saArgs, &index, &vSessionHandle);
241 if (FAILED(hr)) goto LExit;
242 VARIANT vEntryPoint;
243 vEntryPoint.vt = VT_BSTR;
244 vEntryPoint.bstrVal = SysAllocString(szClassName);
245 if (vEntryPoint.bstrVal == NULL)
246 {
247 hr = E_OUTOFMEMORY;
248 goto LExit;
249 }
250 index = 1;
251 hr = SafeArrayPutElement(saArgs, &index, &vEntryPoint);
252 if (FAILED(hr)) goto LExit;
253 VARIANT vUILevel;
254 vUILevel.vt = VT_I4;
255 vUILevel.ulVal = *pdwInternalUILevel;
256 index = 2;
257 hr = SafeArrayPutElement(saArgs, &index, &vUILevel);
258 if (FAILED(hr)) goto LExit;
259
260 hr = pInitMethod->Invoke_3(vNull, saArgs, &vResult);
261
262LExit:
263 SafeArrayDestroy(saArgs);
264 if (SUCCEEDED(hr))
265 {
266 *puiResult = (UINT) vResult.lVal;
267 if ((*puiResult & 0xFFFF) == 0)
268 {
269 // Due to interop limitations, the successful resulting UILevel is returned
270 // as the high-word of the return value instead of via a ref parameter.
271 *pdwInternalUILevel = *puiResult >> 16;
272 *puiResult = 0;
273 }
274 return true;
275 }
276 else
277 {
278 Log(hSession, L"Failed to invoke EmbeddedUI Initialize method. Error code 0x%X", hr);
279 return false;
280 }
281}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-01-06 18:35:03 +0000