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// 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.
#include "precomp.h"
static VOID DestroyNetFxChainer(
__in NetFxChainer* pChainer
)
{
if (pChainer)
{
ReleaseHandle(pChainer->hSection);
ReleaseHandle(pChainer->hEventChaineeSend);
ReleaseHandle(pChainer->hEventChainerSend);
ReleaseHandle(pChainer->hMutex);
if (pChainer->pData)
{
::UnmapViewOfFile(pChainer->pData);
}
MemFree(pChainer);
}
}
static HRESULT CreateNetFxChainer(
__in LPCWSTR wzSectionName,
__in LPCWSTR wzEventName,
__out NetFxChainer** ppChainer
)
{
HRESULT hr = S_OK;
LPWSTR sczName = NULL;
NetFxChainer* pChainer = NULL;
pChainer = (NetFxChainer*)MemAlloc(sizeof(NetFxChainer), TRUE);
ExitOnNull(pChainer, hr, E_OUTOFMEMORY, "Failed to allocate memory for NetFxChainer struct.");
pChainer->hEventChaineeSend = ::CreateEvent(NULL, FALSE, FALSE, wzEventName);
ExitOnNullWithLastError(pChainer->hEventChaineeSend, hr, "Failed to create event: %ls", wzEventName);
hr = StrAllocFormatted(&sczName, L"%ls_send", wzEventName);
ExitOnFailure(hr, "failed to allocate memory for event name");
pChainer->hEventChainerSend = ::CreateEvent(NULL, FALSE, FALSE, sczName);
ExitOnNullWithLastError(pChainer->hEventChainerSend, hr, "Failed to create event: %ls", sczName);
hr = StrAllocFormatted(&sczName, L"%ls_mutex", wzEventName);
ExitOnFailure(hr, "failed to allocate memory for mutex name");
// Create the mutex, we initially own
pChainer->hMutex = ::CreateMutex(NULL, TRUE, sczName);
ExitOnNullWithLastError(pChainer->hMutex, hr, "Failed to create mutex: %ls", sczName);
pChainer->hSection = ::CreateFileMapping(INVALID_HANDLE_VALUE,
NULL, // security attributes
PAGE_READWRITE,
0, // high-order DWORD of maximum size
NETFXDATA_SIZE, // low-order DWORD of maximum size
wzSectionName);
ExitOnNullWithLastError(pChainer->hSection, hr, "Failed to memory map cabinet file: %ls", wzSectionName);
pChainer->pData = reinterpret_cast<NetFxDataStructure*>(::MapViewOfFile(pChainer->hSection,
FILE_MAP_WRITE,
0, 0, // offsets
0 // map entire file
));
ExitOnNullWithLastError(pChainer->pData, hr, "Failed to MapViewOfFile for %ls.", wzSectionName);
// Initialize the shared memory
hr = ::StringCchCopyW(pChainer->pData->szEventName, countof(pChainer->pData->szEventName), wzEventName);
ExitOnFailure(hr, "failed to copy event name to shared memory structure.");
pChainer->pData->downloadFinished = false;
pChainer->pData->downloadSoFar = 0;
pChainer->pData->hrDownloadFinished = E_PENDING;
pChainer->pData->downloadAbort = false;
pChainer->pData->installFinished = false;
pChainer->pData->installSoFar = 0;
pChainer->pData->hrInstallFinished = E_PENDING;
pChainer->pData->installAbort = false;
pChainer->pData->hrInternalError = S_OK;
pChainer->pData->version = NETFXDATA_VERSION;
pChainer->pData->messageCode = 0;
pChainer->pData->messageResponse = 0;
pChainer->pData->messageDataLength = 0;
// Done with initialization, allow others to access.
::ReleaseMutex(pChainer->hMutex);
*ppChainer = pChainer;
pChainer = NULL;
LExit:
ReleaseStr(sczName);
if (pChainer)
{
// Something failed, release the mutex and destroy the object
if (pChainer->hMutex)
{
::ReleaseMutex(pChainer->hMutex);
}
DestroyNetFxChainer(pChainer);
}
return hr;
}
static VOID NetFxAbort(
__in NetFxChainer* pChainer
)
{
::WaitForSingleObject(pChainer->hMutex, INFINITE);
pChainer->pData->downloadAbort = true;
pChainer->pData->installAbort = true;
::ReleaseMutex(pChainer->hMutex);
::SetEvent(pChainer->hEventChainerSend);
}
static BYTE NetFxGetProgress(
__in NetFxChainer* pChainer
)
{
BYTE bProgress = 0;
::WaitForSingleObject(pChainer->hMutex, INFINITE);
bProgress = (pChainer->pData->installSoFar + pChainer->pData->downloadSoFar) / 2;
::ReleaseMutex(pChainer->hMutex);
return bProgress;
}
static HRESULT NetFxGetMessage(
__in NetFxChainer* pChainer,
__out DWORD* pdwMessage,
__out LPVOID* ppBuffer,
__out DWORD* pdwBufferSize
)
{
HRESULT hr = S_OK;
::WaitForSingleObject(pChainer->hMutex, INFINITE);
*pdwMessage = pChainer->pData->messageCode;
*ppBuffer = NULL;
*pdwBufferSize = 0;
if (NETFX_NO_MESSAGE != *pdwMessage)
{
*ppBuffer = MemAlloc(pChainer->pData->messageDataLength, TRUE);
ExitOnNull(*ppBuffer, hr, E_OUTOFMEMORY, "Failed to allocate memory for message data");
memcpy(*ppBuffer, pChainer->pData->messageData, pChainer->pData->messageDataLength);
*pdwBufferSize = pChainer->pData->messageDataLength;
}
LExit:
::ReleaseMutex(pChainer->hMutex);
return hr;
}
static void NetFxRespond(
__in NetFxChainer* pChainer,
__in DWORD dwResponse
)
{
::WaitForSingleObject(pChainer->hMutex, INFINITE);
pChainer->pData->messageCode = NETFX_NO_MESSAGE;
pChainer->pData->messageResponse = dwResponse;
if (IDCANCEL == dwResponse)
{
pChainer->pData->downloadAbort = true;
pChainer->pData->installAbort = true;
}
::ReleaseMutex(pChainer->hMutex);
::SetEvent(pChainer->hEventChainerSend);
}
static HRESULT NetFxGetResult(
__in NetFxChainer* pChainer,
__out HRESULT* phrInternalError
)
{
HRESULT hr = S_OK;
::WaitForSingleObject(pChainer->hMutex, INFINITE);
hr = pChainer->pData->hrInstallFinished;
if (FAILED(pChainer->pData->hrDownloadFinished) && // Download failed
(S_OK == hr || E_ABORT == hr)) // Install succeeded or was aborted
{
hr = pChainer->pData->hrDownloadFinished;
}
if (phrInternalError)
{
*phrInternalError = pChainer->pData->hrInternalError;
}
::ReleaseMutex(pChainer->hMutex);
return hr;
}
static HRESULT OnNetFxFilesInUse(
__in NetFxChainer* pNetfxChainer,
__in NetFxCloseApplications* pCloseApps,
__in PFN_GENERICMESSAGEHANDLER pfnMessageHandler,
__in LPVOID pvContext
)
{
HRESULT hr = S_OK;
DWORD cFiles = 0;
LPWSTR* rgwzFiles = NULL;
GENERIC_EXECUTE_MESSAGE message = { };
DWORD dwResponse = 0;
cFiles = pCloseApps->dwApplicationsSize;
rgwzFiles = (LPWSTR*)MemAlloc(sizeof(LPWSTR*) * cFiles, TRUE);
ExitOnNull(rgwzFiles, hr, E_OUTOFMEMORY, "Failed to allocate buffer.");
for (DWORD i = 0; i < pCloseApps->dwApplicationsSize; ++i)
{
rgwzFiles[i] = pCloseApps->applications[i].szName;
}
// send message
message.type = GENERIC_EXECUTE_MESSAGE_NETFX_FILES_IN_USE;
message.dwUIHint = MB_ABORTRETRYIGNORE;
message.filesInUse.cFiles = cFiles;
message.filesInUse.rgwzFiles = (LPCWSTR*)rgwzFiles;
dwResponse = (DWORD)pfnMessageHandler(&message, pvContext);
NetFxRespond(pNetfxChainer, dwResponse);
LExit:
ReleaseMem(rgwzFiles);
return hr;
}
static HRESULT OnNetFxProgress(
__in NetFxChainer* pNetfxChainer,
__in BYTE bProgress,
__in PFN_GENERICMESSAGEHANDLER pfnMessageHandler,
__in LPVOID pvContext
)
{
GENERIC_EXECUTE_MESSAGE message = { };
DWORD dwResponse = 0;
// send message
message.type = GENERIC_EXECUTE_MESSAGE_PROGRESS;
message.dwUIHint = MB_OKCANCEL;
message.progress.dwPercentage = 100 * (DWORD)bProgress / BYTE_MAX;
dwResponse = (DWORD)pfnMessageHandler(&message, pvContext);
if (IDCANCEL == dwResponse)
{
NetFxAbort(pNetfxChainer);
}
return S_OK;
}
static HRESULT OnNetFxError(
__in NetFxChainer* /*pNetfxChainer*/,
__in HRESULT hrError,
__in PFN_GENERICMESSAGEHANDLER pfnMessageHandler,
__in LPVOID pvContext
)
{
GENERIC_EXECUTE_MESSAGE message = { };
DWORD dwResponse = 0;
// send message
message.type = GENERIC_EXECUTE_MESSAGE_ERROR;
message.dwUIHint = MB_OK;
message.error.dwErrorCode = hrError;
message.error.wzMessage = NULL;
dwResponse = (DWORD)pfnMessageHandler(&message, pvContext);
return S_OK;
}
static HRESULT ProcessNetFxMessage(
__in NetFxChainer* pNetfxChainer,
__in PFN_GENERICMESSAGEHANDLER pfnGenericMessageHandler,
__in LPVOID pvContext
)
{
HRESULT hr = S_OK;
DWORD dwMessage = NETFX_NO_MESSAGE;
DWORD dwBufferSize = 0;
LPVOID pBuffer = NULL;
// send progress
hr = OnNetFxProgress(pNetfxChainer, NetFxGetProgress(pNetfxChainer), pfnGenericMessageHandler, pvContext);
ExitOnFailure(hr, "Failed to send progress from netfx chainer.");
// Check for message
hr = NetFxGetMessage(pNetfxChainer, &dwMessage, &pBuffer, &dwBufferSize);
ExitOnFailure(hr, "Failed to get message from netfx chainer.");
switch(dwMessage)
{
case NETFX_CLOSE_APPS:
hr = OnNetFxFilesInUse(pNetfxChainer, (NetFxCloseApplications*)pBuffer, pfnGenericMessageHandler, pvContext);
ExitOnFailure(hr, "Failed to send files in use message from netfx chainer.");
break;
default:
// No message we understand.
break;
}
LExit:
ReleaseMem(pBuffer);
return hr;
}
extern "C" HRESULT NetFxRunChainer(
__in_z LPCWSTR wzExecutablePath,
__in_z LPWSTR sczBaseCommand,
__in_z_opt LPCWSTR wzUserArgs,
__in PFN_GENERICMESSAGEHANDLER pfnGenericMessageHandler,
__in LPVOID pvContext,
__out DWORD* pdwExitCode
)
{
HRESULT hr = S_OK;
DWORD dwSignaledIndex = 0;
BOOL fTimedOut = 0;
WCHAR wzGuid[GUID_STRING_LENGTH];
LPWSTR sczEventName = NULL;
LPWSTR sczSectionName = NULL;
LPWSTR sczCommand = NULL;
NetFxChainer* pNetfxChainer = NULL;
PROCESS_INFORMATION pi = { };
HRESULT hrInternalError = 0;
// Create the unique name suffix.
hr = GuidFixedCreate(wzGuid);
ExitOnRootFailure(hr, "Failed to create netfx chainer guid.");
hr = StrAllocFormatted(&sczSectionName, L"NetFxSection.%ls", wzGuid);
ExitOnFailure(hr, "Failed to allocate section name.");
hr = StrAllocFormatted(&sczEventName, L"NetFxEvent.%ls", wzGuid);
ExitOnFailure(hr, "Failed to allocate event name.");
hr = CreateNetFxChainer(sczSectionName, sczEventName, &pNetfxChainer);
ExitOnFailure(hr, "Failed to create netfx chainer.");
hr = StrAllocFormatted(&sczCommand, L"%ls /pipe %ls", sczBaseCommand, sczSectionName);
ExitOnFailure(hr, "Failed to append netfx chainer args.");
// Always add user supplied arguments last.
if (wzUserArgs)
{
hr = StrAllocConcatFormattedSecure(&sczCommand, L" %ls", wzUserArgs);
ExitOnFailure(hr, "Failed to append user args.");
}
hr = CoreCreateProcess(wzExecutablePath, sczCommand, FALSE, CREATE_NO_WINDOW, NULL, 0, &pi);
ExitOnFailure(hr, "Failed to CreateProcess on path: %ls", wzExecutablePath);
HANDLE handles[2] = { pi.hProcess, pNetfxChainer->hEventChaineeSend };
for (;;)
{
hr = AppWaitForMultipleObjects(2, handles, FALSE, 100, &dwSignaledIndex);
ExitOnWaitObjectFailure(hr, fTimedOut, "Failed to wait for netfx chainer process to complete");
if (fTimedOut)
{
continue;
}
switch (dwSignaledIndex)
{
case 0:
// Process has exited
*pdwExitCode = NetFxGetResult(pNetfxChainer, &hrInternalError);
if (E_PENDING == *pdwExitCode)
{
if (!::GetExitCodeProcess(pi.hProcess, pdwExitCode))
{
ExitWithLastError(hr, "Failed to get netfx return code.");
}
}
else if (FAILED(hrInternalError))
{
// push internal error message
hr = OnNetFxError(pNetfxChainer, hrInternalError, pfnGenericMessageHandler, pvContext);
ExitOnFailure(hr, "Failed to send internal error message from netfx chainer.");
}
ExitFunction();
case 1:
// Chainee has notified us of a change.
hr = ProcessNetFxMessage(pNetfxChainer, pfnGenericMessageHandler, pvContext);
ExitOnFailure(hr, "Failed to process netfx chainer message.");
break;
}
}
LExit:
ReleaseStr(sczSectionName);
ReleaseStr(sczEventName);
StrSecureZeroFreeString(sczCommand);
DestroyNetFxChainer(pNetfxChainer);
ReleaseHandle(pi.hThread);
ReleaseHandle(pi.hProcess);
return hr;
}
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