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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"
// struct
struct BURN_EMBEDDED_CALLBACK_CONTEXT
{
PFN_GENERICMESSAGEHANDLER pfnGenericMessageHandler;
LPVOID pvContext;
};
// internal function declarations
static HRESULT ProcessEmbeddedMessages(
__in BURN_PIPE_MESSAGE* pMsg,
__in_opt LPVOID pvContext,
__out DWORD* pdwResult
);
static HRESULT OnEmbeddedErrorMessage(
__in PFN_GENERICMESSAGEHANDLER pfnMessageHandler,
__in LPVOID pvContext,
__in_bcount(cbData) BYTE* pbData,
__in SIZE_T cbData,
__out DWORD* pdwResult
);
static HRESULT OnEmbeddedProgress(
__in PFN_GENERICMESSAGEHANDLER pfnMessageHandler,
__in LPVOID pvContext,
__in_bcount(cbData) BYTE* pbData,
__in SIZE_T cbData,
__out DWORD* pdwResult
);
// function definitions
/*******************************************************************
EmbeddedRunBundle -
*******************************************************************/
extern "C" HRESULT EmbeddedRunBundle(
__in BURN_PIPE_CONNECTION* pConnection,
__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 dwCurrentProcessId = ::GetCurrentProcessId();
LPWSTR sczCommand = NULL;
PROCESS_INFORMATION pi = { };
BURN_PIPE_RESULT result = { };
PipeConnectionInitialize(pConnection);
BURN_EMBEDDED_CALLBACK_CONTEXT context = { };
context.pfnGenericMessageHandler = pfnGenericMessageHandler;
context.pvContext = pvContext;
hr = PipeCreateNameAndSecret(&pConnection->sczName, &pConnection->sczSecret);
ExitOnFailure(hr, "Failed to create embedded pipe name and client token.");
hr = PipeCreatePipes(pConnection, FALSE);
ExitOnFailure(hr, "Failed to create embedded pipe.");
hr = StrAllocFormatted(&sczCommand, L"%ls -%ls %ls %ls %u", sczBaseCommand, BURN_COMMANDLINE_SWITCH_EMBEDDED, pConnection->sczName, pConnection->sczSecret, dwCurrentProcessId);
ExitOnFailure(hr, "Failed to append embedded 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, TRUE, CREATE_NO_WINDOW, NULL, 0, &pi);
ExitOnFailure(hr, "Failed to create embedded process at path: %ls", wzExecutablePath);
pConnection->dwProcessId = ::GetProcessId(pi.hProcess);
pConnection->hProcess = pi.hProcess;
pi.hProcess = NULL;
hr = PipeWaitForChildConnect(pConnection);
ExitOnFailure(hr, "Failed to wait for embedded process to connect to pipe.");
hr = PipePumpMessages(pConnection->hPipe, ProcessEmbeddedMessages, &context, &result);
ExitOnFailure(hr, "Failed to process messages from embedded message.");
// Get the return code from the embedded process.
hr = CoreWaitForProcCompletion(pConnection->hProcess, INFINITE, pdwExitCode);
ExitOnFailure(hr, "Failed to wait for embedded executable: %ls", wzExecutablePath);
LExit:
ReleaseHandle(pi.hThread);
ReleaseHandle(pi.hProcess);
StrSecureZeroFreeString(sczCommand);
PipeConnectionUninitialize(pConnection);
return hr;
}
// internal function definitions
static HRESULT ProcessEmbeddedMessages(
__in BURN_PIPE_MESSAGE* pMsg,
__in_opt LPVOID pvContext,
__out DWORD* pdwResult
)
{
HRESULT hr = S_OK;
BURN_EMBEDDED_CALLBACK_CONTEXT* pContext = static_cast<BURN_EMBEDDED_CALLBACK_CONTEXT*>(pvContext);
DWORD dwResult = 0;
// Process the message.
switch (pMsg->dwMessage)
{
case BURN_EMBEDDED_MESSAGE_TYPE_ERROR:
hr = OnEmbeddedErrorMessage(pContext->pfnGenericMessageHandler, pContext->pvContext, static_cast<BYTE*>(pMsg->pvData), pMsg->cbData, &dwResult);
ExitOnFailure(hr, "Failed to process embedded error message.");
break;
case BURN_EMBEDDED_MESSAGE_TYPE_PROGRESS:
hr = OnEmbeddedProgress(pContext->pfnGenericMessageHandler, pContext->pvContext, static_cast<BYTE*>(pMsg->pvData), pMsg->cbData, &dwResult);
ExitOnFailure(hr, "Failed to process embedded progress message.");
break;
default:
LogStringLine(REPORT_DEBUG, "Unexpected embedded message received from child process, msg: %u", pMsg->dwMessage);
dwResult = (DWORD)E_NOTIMPL;
}
*pdwResult = dwResult;
LExit:
return hr;
}
static HRESULT OnEmbeddedErrorMessage(
__in PFN_GENERICMESSAGEHANDLER pfnMessageHandler,
__in LPVOID pvContext,
__in_bcount(cbData) BYTE* pbData,
__in SIZE_T cbData,
__out DWORD* pdwResult
)
{
HRESULT hr = S_OK;
SIZE_T iData = 0;
GENERIC_EXECUTE_MESSAGE message = { };
LPWSTR sczMessage = NULL;
message.type = GENERIC_EXECUTE_MESSAGE_ERROR;
hr = BuffReadNumber(pbData, cbData, &iData, &message.error.dwErrorCode);
ExitOnFailure(hr, "Failed to read error code from buffer.");
hr = BuffReadString(pbData, cbData, &iData, &sczMessage);
ExitOnFailure(hr, "Failed to read error message from buffer.");
message.error.wzMessage = sczMessage;
hr = BuffReadNumber(pbData, cbData, &iData, &message.dwUIHint);
ExitOnFailure(hr, "Failed to read UI hint from buffer.");
*pdwResult = (DWORD)pfnMessageHandler(&message, pvContext);
LExit:
ReleaseStr(sczMessage);
return hr;
}
static HRESULT OnEmbeddedProgress(
__in PFN_GENERICMESSAGEHANDLER pfnMessageHandler,
__in LPVOID pvContext,
__in_bcount(cbData) BYTE* pbData,
__in SIZE_T cbData,
__out DWORD* pdwResult
)
{
HRESULT hr = S_OK;
SIZE_T iData = 0;
GENERIC_EXECUTE_MESSAGE message = { };
message.type = GENERIC_EXECUTE_MESSAGE_PROGRESS;
message.dwUIHint = MB_OKCANCEL;
hr = BuffReadNumber(pbData, cbData, &iData, &message.progress.dwPercentage);
ExitOnFailure(hr, "Failed to read progress from buffer.");
*pdwResult = (DWORD)pfnMessageHandler(&message, pvContext);
LExit:
return hr;
}
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