Merge burn

1 files changed, 754 insertions, 0 deletions

diff --git a/src/burn/engine/logging.cpp b/src/burn/engine/logging.cpp
new file mode 100644
index 00000000..065ef907
--- /dev/null
+++ b/src/burn/engine/logging.cpp
@@ -0,0 +1,754 @@
+// 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 DWORD vdwPackageSequence = 0;
+static const DWORD LOG_OPEN_RETRY_COUNT = 3;
+static const DWORD LOG_OPEN_RETRY_WAIT = 2000;
+static CONST LPWSTR LOG_FAILED_EVENT_LOG_MESSAGE = L"Burn Engine Fatal Error: failed to open log file.";
+
+// structs
+
+
+
+// internal function declarations
+
+static void CheckLoggingPolicy(
+    __out DWORD *pdwAttributes
+    );
+static HRESULT GetNonSessionSpecificTempFolder(
+    __deref_out_z LPWSTR* psczNonSessionTempFolder
+    );
+
+
+// function definitions
+
+extern "C" HRESULT LoggingOpen(
+    __in BURN_LOGGING* pLog,
+    __in BURN_VARIABLES* pVariables,
+    __in BOOTSTRAPPER_DISPLAY display,
+    __in_z LPCWSTR wzBundleName
+    )
+{
+    HRESULT hr = S_OK;
+    LPWSTR sczLoggingBaseFolder = NULL;
+    LPWSTR sczPrefixFormatted = NULL;
+
+    // Check if the logging policy is set and configure the logging appropriately.
+    CheckLoggingPolicy(&pLog->dwAttributes);
+
+    if (pLog->dwAttributes & BURN_LOGGING_ATTRIBUTE_VERBOSE || pLog->dwAttributes & BURN_LOGGING_ATTRIBUTE_EXTRADEBUG)
+    {
+        if (pLog->dwAttributes & BURN_LOGGING_ATTRIBUTE_EXTRADEBUG)
+        {
+            LogSetLevel(REPORT_DEBUG, FALSE);
+        }
+        else if (pLog->dwAttributes & BURN_LOGGING_ATTRIBUTE_VERBOSE)
+        {
+            LogSetLevel(REPORT_VERBOSE, FALSE);
+        }
+
+        if ((!pLog->sczPath || !*pLog->sczPath) && (!pLog->sczPrefix || !*pLog->sczPrefix))
+        {
+            PathCreateTimeBasedTempFile(NULL, L"Setup", NULL, L"log", &pLog->sczPath, NULL);
+        }
+    }
+
+    // Open the log approriately.
+    if (pLog->sczPath && *pLog->sczPath)
+    {
+        DWORD cRetry = 0;
+
+        hr = DirGetCurrent(&sczLoggingBaseFolder);
+        ExitOnFailure(hr, "Failed to get current directory.");
+
+        // Try pretty hard to open the log file when appending.
+        do
+        {
+            if (0 < cRetry)
+            {
+                ::Sleep(LOG_OPEN_RETRY_WAIT);
+            }
+
+            hr = LogOpen(sczLoggingBaseFolder, pLog->sczPath, NULL, NULL, pLog->dwAttributes & BURN_LOGGING_ATTRIBUTE_APPEND, FALSE, &pLog->sczPath);
+            if (pLog->dwAttributes & BURN_LOGGING_ATTRIBUTE_APPEND && HRESULT_FROM_WIN32(ERROR_SHARING_VIOLATION) == hr)
+            {
+                ++cRetry;
+            }
+        } while (cRetry > 0 && cRetry <= LOG_OPEN_RETRY_COUNT);
+
+        if (FAILED(hr))
+        {
+            // Log is not open, so note that.
+            LogDisable();
+            pLog->state = BURN_LOGGING_STATE_DISABLED;
+
+            if (pLog->dwAttributes & BURN_LOGGING_ATTRIBUTE_APPEND)
+            {
+                // If appending, ignore the failure and continue.
+                hr = S_OK;
+            }
+            else // specifically tried to create a log file so show an error if appropriate and bail.
+            {
+                HRESULT hrOriginal = hr;
+
+                hr = HRESULT_FROM_WIN32(ERROR_INSTALL_LOG_FAILURE);
+                SplashScreenDisplayError(display, wzBundleName, hr);
+
+                ExitOnFailure(hrOriginal, "Failed to open log: %ls", pLog->sczPath);
+            }
+        }
+        else
+        {
+            pLog->state = BURN_LOGGING_STATE_OPEN;
+        }
+    }
+    else
+    {
+        if (pLog->sczPrefix && *pLog->sczPrefix)
+        {
+            hr = VariableFormatString(pVariables, pLog->sczPrefix, &sczPrefixFormatted, NULL);
+        }
+
+        if (sczPrefixFormatted && *sczPrefixFormatted)
+        {
+            LPCWSTR wzPrefix = sczPrefixFormatted;
+
+            // Best effort to open default logging.
+            if (PathIsAbsolute(sczPrefixFormatted))
+            {
+                hr = PathGetDirectory(sczPrefixFormatted, &sczLoggingBaseFolder);
+                ExitOnFailure(hr, "Failed to get parent directory from '%ls'.", sczPrefixFormatted);
+
+                wzPrefix = PathFile(sczPrefixFormatted);
+            }
+            else
+            {
+                hr = GetNonSessionSpecificTempFolder(&sczLoggingBaseFolder);
+                ExitOnFailure(hr, "Failed to get non-session specific TEMP folder.");
+            }
+
+            hr = LogOpen(sczLoggingBaseFolder, wzPrefix, NULL, pLog->sczExtension, FALSE, FALSE, &pLog->sczPath);
+            if (FAILED(hr))
+            {
+                LogDisable();
+                pLog->state = BURN_LOGGING_STATE_DISABLED;
+
+                hr = S_OK;
+            }
+            else
+            {
+                pLog->state = BURN_LOGGING_STATE_OPEN;
+            }
+        }
+        else // no logging enabled.
+        {
+            LogDisable();
+            pLog->state = BURN_LOGGING_STATE_DISABLED;
+        }
+    }
+
+    // If the log was opened, write the header info and update the prefix and extension to match
+    // the log name so future logs are opened with the same pattern.
+    if (BURN_LOGGING_STATE_OPEN == pLog->state)
+    {
+        LPCWSTR wzExtension = PathExtension(pLog->sczPath);
+        if (wzExtension && *wzExtension)
+        {
+            hr = StrAllocString(&pLog->sczPrefix, pLog->sczPath, wzExtension - pLog->sczPath);
+            ExitOnFailure(hr, "Failed to copy log path to prefix.");
+
+            hr = StrAllocString(&pLog->sczExtension, wzExtension + 1, 0);
+            ExitOnFailure(hr, "Failed to copy log extension to extension.");
+        }
+        else
+        {
+            hr = StrAllocString(&pLog->sczPrefix, pLog->sczPath, 0);
+            ExitOnFailure(hr, "Failed to copy full log path to prefix.");
+        }
+
+        if (pLog->sczPathVariable && *pLog->sczPathVariable)
+        {
+            VariableSetString(pVariables, pLog->sczPathVariable, pLog->sczPath, FALSE, FALSE); // Ignore failure.
+        }
+    }
+
+LExit:
+    ReleaseStr(sczLoggingBaseFolder);
+    StrSecureZeroFreeString(sczPrefixFormatted);
+
+    return hr;
+}
+
+extern "C" void LoggingOpenFailed()
+{
+    HRESULT hr = S_OK;
+    HANDLE hEventLog = NULL;
+    LPCWSTR* lpStrings = const_cast<LPCWSTR*>(&LOG_FAILED_EVENT_LOG_MESSAGE);
+    WORD wNumStrings = 1;
+
+    hr = LogOpen(NULL, L"Setup", L"_Failed", L"txt", FALSE, FALSE, NULL);
+    if (SUCCEEDED(hr))
+    {
+        ExitFunction();
+    }
+
+    // If opening the "failure" log failed, then attempt to record that in the Application event log.
+    hEventLog = ::OpenEventLogW(NULL, L"Application");
+    ExitOnNullWithLastError(hEventLog, hr, "Failed to open Application event log");
+
+    hr = ::ReportEventW(hEventLog, EVENTLOG_ERROR_TYPE, 1, 1, NULL, wNumStrings, 0, lpStrings, NULL);
+    ExitOnNullWithLastError(hEventLog, hr, "Failed to write event log entry");
+
+LExit:
+    if (hEventLog)
+    {
+        ::CloseEventLog(hEventLog);
+    }
+}
+
+extern "C" void LoggingIncrementPackageSequence()
+{
+    ++vdwPackageSequence;
+}
+
+extern "C" HRESULT LoggingSetPackageVariable(
+    __in BURN_PACKAGE* pPackage,
+    __in_z_opt LPCWSTR wzSuffix,
+    __in BOOL fRollback,
+    __in BURN_LOGGING* pLog,
+    __in BURN_VARIABLES* pVariables,
+    __out_opt LPWSTR* psczLogPath
+    )
+{
+    HRESULT hr = S_OK;
+    LPWSTR sczLogPath = NULL;
+
+    // Make sure that no package log files are created when logging has been disabled via Log element.
+    if (BURN_LOGGING_STATE_DISABLED == pLog->state)
+    {
+        if (psczLogPath)
+        {
+            *psczLogPath = NULL;
+        }
+
+        ExitFunction();
+    }
+
+    if ((!fRollback && pPackage->sczLogPathVariable && *pPackage->sczLogPathVariable) ||
+        (fRollback && pPackage->sczRollbackLogPathVariable && *pPackage->sczRollbackLogPathVariable))
+    {
+        hr = StrAllocFormatted(&sczLogPath, L"%ls%hs%ls_%03u_%ls%ls.%ls", pLog->sczPrefix, wzSuffix && *wzSuffix ? "_" : "", wzSuffix && *wzSuffix ? wzSuffix : L"", vdwPackageSequence, pPackage->sczId, fRollback ? L"_rollback" : L"", pLog->sczExtension);
+        ExitOnFailure(hr, "Failed to allocate path for package log.");
+
+        hr = VariableSetString(pVariables, fRollback ? pPackage->sczRollbackLogPathVariable : pPackage->sczLogPathVariable, sczLogPath, FALSE, FALSE);
+        ExitOnFailure(hr, "Failed to set log path into variable.");
+
+        if (psczLogPath)
+        {
+            hr = StrAllocString(psczLogPath, sczLogPath, 0);
+            ExitOnFailure(hr, "Failed to copy package log path.");
+        }
+    }
+
+LExit:
+    ReleaseStr(sczLogPath);
+
+    return hr;
+}
+
+extern "C" LPCSTR LoggingBurnActionToString(
+    __in BOOTSTRAPPER_ACTION action
+    )
+{
+    switch (action)
+    {
+    case BOOTSTRAPPER_ACTION_UNKNOWN:
+        return "Unknown";
+    case BOOTSTRAPPER_ACTION_HELP:
+        return "Help";
+    case BOOTSTRAPPER_ACTION_LAYOUT:
+        return "Layout";
+    case BOOTSTRAPPER_ACTION_CACHE:
+        return "Cache";
+    case BOOTSTRAPPER_ACTION_UNINSTALL:
+        return "Uninstall";
+    case BOOTSTRAPPER_ACTION_INSTALL:
+        return "Install";
+    case BOOTSTRAPPER_ACTION_MODIFY:
+        return "Modify";
+    case BOOTSTRAPPER_ACTION_REPAIR:
+        return "Repair";
+    case BOOTSTRAPPER_ACTION_UPDATE_REPLACE:
+        return "UpdateReplace";
+    case BOOTSTRAPPER_ACTION_UPDATE_REPLACE_EMBEDDED:
+        return "UpdateReplaceEmbedded";
+    default:
+        return "Invalid";
+    }
+}
+
+LPCSTR LoggingBurnMessageToString(
+    __in UINT message
+    )
+{
+    switch (message)
+    {
+    case WM_BURN_APPLY:
+        return "Apply";
+    case WM_BURN_DETECT:
+        return "Detect";
+    case WM_BURN_ELEVATE:
+        return "Elevate";
+    case WM_BURN_LAUNCH_APPROVED_EXE:
+        return "LaunchApprovedExe";
+    case WM_BURN_PLAN:
+        return "Plan";
+    case WM_BURN_QUIT:
+        return "Quit";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingActionStateToString(
+    __in BOOTSTRAPPER_ACTION_STATE actionState
+    )
+{
+    switch (actionState)
+    {
+    case BOOTSTRAPPER_ACTION_STATE_NONE:
+        return "None";
+    case BOOTSTRAPPER_ACTION_STATE_UNINSTALL:
+        return "Uninstall";
+    case BOOTSTRAPPER_ACTION_STATE_INSTALL:
+        return "Install";
+    case BOOTSTRAPPER_ACTION_STATE_MODIFY:
+        return "Modify";
+    case BOOTSTRAPPER_ACTION_STATE_MEND:
+        return "Mend";
+    case BOOTSTRAPPER_ACTION_STATE_REPAIR:
+        return "Repair";
+    case BOOTSTRAPPER_ACTION_STATE_MINOR_UPGRADE:
+        return "MinorUpgrade";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingDependencyActionToString(
+    BURN_DEPENDENCY_ACTION action
+    )
+{
+    switch (action)
+    {
+    case BURN_DEPENDENCY_ACTION_NONE:
+        return "None";
+    case BURN_DEPENDENCY_ACTION_REGISTER:
+        return "Register";
+    case BURN_DEPENDENCY_ACTION_UNREGISTER:
+        return "Unregister";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingBoolToString(
+    __in BOOL f
+    )
+{
+    if (f)
+    {
+        return "Yes";
+    }
+
+    return "No";
+}
+
+extern "C" LPCSTR LoggingTrueFalseToString(
+    __in BOOL f
+    )
+{
+    if (f)
+    {
+        return "true";
+    }
+
+    return "false";
+}
+
+extern "C" LPCSTR LoggingPackageStateToString(
+    __in BOOTSTRAPPER_PACKAGE_STATE packageState
+    )
+{
+    switch (packageState)
+    {
+    case BOOTSTRAPPER_PACKAGE_STATE_UNKNOWN:
+        return "Unknown";
+    case BOOTSTRAPPER_PACKAGE_STATE_OBSOLETE:
+        return "Obsolete";
+    case BOOTSTRAPPER_PACKAGE_STATE_ABSENT:
+        return "Absent";
+    case BOOTSTRAPPER_PACKAGE_STATE_PRESENT:
+        return "Present";
+    case BOOTSTRAPPER_PACKAGE_STATE_SUPERSEDED:
+        return "Superseded";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingPackageRegistrationStateToString(
+    __in BOOL fCanAffectRegistration,
+    __in BURN_PACKAGE_REGISTRATION_STATE registrationState
+    )
+{
+    if (!fCanAffectRegistration)
+    {
+        return "(permanent)";
+    }
+
+    switch (registrationState)
+    {
+    case BURN_PACKAGE_REGISTRATION_STATE_UNKNOWN:
+        return "Unknown";
+    case BURN_PACKAGE_REGISTRATION_STATE_IGNORED:
+        return "Ignored";
+    case BURN_PACKAGE_REGISTRATION_STATE_ABSENT:
+        return "Absent";
+    case BURN_PACKAGE_REGISTRATION_STATE_PRESENT:
+        return "Present";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingMsiFeatureStateToString(
+    __in BOOTSTRAPPER_FEATURE_STATE featureState
+    )
+{
+    switch (featureState)
+    {
+    case BOOTSTRAPPER_FEATURE_STATE_UNKNOWN:
+        return "Unknown";
+    case BOOTSTRAPPER_FEATURE_STATE_ABSENT:
+        return "Absent";
+    case BOOTSTRAPPER_FEATURE_STATE_ADVERTISED:
+        return "Advertised";
+    case BOOTSTRAPPER_FEATURE_STATE_LOCAL:
+        return "Local";
+    case BOOTSTRAPPER_FEATURE_STATE_SOURCE:
+        return "Source";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingMsiFeatureActionToString(
+    __in BOOTSTRAPPER_FEATURE_ACTION featureAction
+    )
+{
+    switch (featureAction)
+    {
+    case BOOTSTRAPPER_FEATURE_ACTION_NONE:
+        return "None";
+    case BOOTSTRAPPER_FEATURE_ACTION_ADDLOCAL:
+        return "AddLocal";
+    case BOOTSTRAPPER_FEATURE_ACTION_ADDSOURCE:
+        return "AddSource";
+    case BOOTSTRAPPER_FEATURE_ACTION_ADDDEFAULT:
+        return "AddDefault";
+    case BOOTSTRAPPER_FEATURE_ACTION_REINSTALL:
+        return "Reinstall";
+    case BOOTSTRAPPER_FEATURE_ACTION_ADVERTISE:
+        return "Advertise";
+    case BOOTSTRAPPER_FEATURE_ACTION_REMOVE:
+        return "Remove";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingMsiInstallContext(
+    __in MSIINSTALLCONTEXT context
+    )
+{
+    switch (context)
+    {
+    case MSIINSTALLCONTEXT_ALL:
+        return "All";
+    case MSIINSTALLCONTEXT_ALLUSERMANAGED:
+        return "AllUserManaged";
+    case MSIINSTALLCONTEXT_MACHINE:
+        return "Machine";
+    case MSIINSTALLCONTEXT_NONE:
+        return "None";
+    case MSIINSTALLCONTEXT_USERMANAGED:
+        return "UserManaged";
+    case MSIINSTALLCONTEXT_USERUNMANAGED:
+        return "UserUnmanaged";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCWSTR LoggingBurnMsiPropertyToString(
+    __in BURN_MSI_PROPERTY burnMsiProperty
+    )
+{
+    switch (burnMsiProperty)
+    {
+    case BURN_MSI_PROPERTY_INSTALL:
+        return BURNMSIINSTALL_PROPERTY_NAME;
+    case BURN_MSI_PROPERTY_MODIFY:
+        return BURNMSIMODIFY_PROPERTY_NAME;
+    case BURN_MSI_PROPERTY_NONE:
+        return L"(none)";
+    case BURN_MSI_PROPERTY_REPAIR:
+        return BURNMSIREPAIR_PROPERTY_NAME;
+    case BURN_MSI_PROPERTY_UNINSTALL:
+        return BURNMSIUNINSTALL_PROPERTY_NAME;
+    default:
+        return L"Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingMspTargetActionToString(
+    __in BOOTSTRAPPER_ACTION_STATE action,
+    __in BURN_PATCH_SKIP_STATE skipState
+    )
+{
+    switch (skipState)
+    {
+    case BURN_PATCH_SKIP_STATE_NONE:
+        return LoggingActionStateToString(action);
+    case BURN_PATCH_SKIP_STATE_TARGET_UNINSTALL:
+        return "Skipped (target uninstall)";
+    case BURN_PATCH_SKIP_STATE_SLIPSTREAM:
+        return "Skipped (slipstream)";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingPerMachineToString(
+    __in BOOL fPerMachine
+    )
+{
+    if (fPerMachine)
+    {
+        return "PerMachine";
+    }
+
+    return "PerUser";
+}
+
+extern "C" LPCSTR LoggingRestartToString(
+    __in BOOTSTRAPPER_APPLY_RESTART restart
+    )
+{
+    switch (restart)
+    {
+    case BOOTSTRAPPER_APPLY_RESTART_NONE:
+        return "None";
+    case BOOTSTRAPPER_APPLY_RESTART_REQUIRED:
+        return "Required";
+    case BOOTSTRAPPER_APPLY_RESTART_INITIATED:
+        return "Initiated";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingResumeModeToString(
+    __in BURN_RESUME_MODE resumeMode
+    )
+{
+    switch (resumeMode)
+    {
+    case BURN_RESUME_MODE_NONE:
+        return "None";
+    case BURN_RESUME_MODE_ACTIVE:
+        return "Active";
+    case BURN_RESUME_MODE_SUSPEND:
+        return "Suspend";
+    case BURN_RESUME_MODE_ARP:
+        return "ARP";
+    case BURN_RESUME_MODE_REBOOT_PENDING:
+        return "Reboot Pending";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingRelationTypeToString(
+    __in BOOTSTRAPPER_RELATION_TYPE type
+    )
+{
+    switch (type)
+    {
+    case BOOTSTRAPPER_RELATION_NONE:
+        return "None";
+    case BOOTSTRAPPER_RELATION_DETECT:
+        return "Detect";
+    case BOOTSTRAPPER_RELATION_UPGRADE:
+        return "Upgrade";
+    case BOOTSTRAPPER_RELATION_ADDON:
+        return "Addon";
+    case BOOTSTRAPPER_RELATION_PATCH:
+        return "Patch";
+    case BOOTSTRAPPER_RELATION_DEPENDENT:
+        return "Dependent";
+    case BOOTSTRAPPER_RELATION_UPDATE:
+        return "Update";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingRelatedOperationToString(
+    __in BOOTSTRAPPER_RELATED_OPERATION operation
+    )
+{
+    switch (operation)
+    {
+    case BOOTSTRAPPER_RELATED_OPERATION_NONE:
+        return "None";
+    case BOOTSTRAPPER_RELATED_OPERATION_DOWNGRADE:
+        return "Downgrade";
+    case BOOTSTRAPPER_RELATED_OPERATION_MINOR_UPDATE:
+        return "MinorUpdate";
+    case BOOTSTRAPPER_RELATED_OPERATION_MAJOR_UPGRADE:
+        return "MajorUpgrade";
+    case BOOTSTRAPPER_RELATED_OPERATION_REMOVE:
+        return "Remove";
+    case BOOTSTRAPPER_RELATED_OPERATION_INSTALL:
+        return "Install";
+    case BOOTSTRAPPER_RELATED_OPERATION_REPAIR:
+        return "Repair";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingRequestStateToString(
+    __in BOOTSTRAPPER_REQUEST_STATE requestState
+    )
+{
+    switch (requestState)
+    {
+    case BOOTSTRAPPER_REQUEST_STATE_NONE:
+        return "None";
+    case BOOTSTRAPPER_REQUEST_STATE_FORCE_ABSENT:
+        return "ForceAbsent";
+    case BOOTSTRAPPER_REQUEST_STATE_ABSENT:
+        return "Absent";
+    case BOOTSTRAPPER_REQUEST_STATE_CACHE:
+        return "Cache";
+    case BOOTSTRAPPER_REQUEST_STATE_PRESENT:
+        return "Present";
+    case BOOTSTRAPPER_REQUEST_STATE_MEND:
+        return "Mend";
+    case BOOTSTRAPPER_REQUEST_STATE_REPAIR:
+        return "Repair";
+    default:
+        return "Invalid";
+    }
+}
+
+extern "C" LPCSTR LoggingRollbackOrExecute(
+    __in BOOL fRollback
+    )
+{
+    return fRollback ? "rollback" : "execute";
+}
+
+extern "C" LPWSTR LoggingStringOrUnknownIfNull(
+    __in LPCWSTR wz
+    )
+{
+    return wz ? wz : L"Unknown";
+}
+
+
+// internal function declarations
+
+static void CheckLoggingPolicy(
+    __out DWORD *pdwAttributes
+    )
+{
+    HRESULT hr = S_OK;
+    HKEY hk = NULL;
+    LPWSTR sczLoggingPolicy = NULL;
+
+    hr = RegOpen(HKEY_LOCAL_MACHINE, L"SOFTWARE\\Policies\\Microsoft\\Windows\\Installer", KEY_READ, &hk);
+    if (SUCCEEDED(hr))
+    {
+        hr = RegReadString(hk, L"Logging", &sczLoggingPolicy);
+        if (SUCCEEDED(hr))
+        {
+            LPCWSTR wz = sczLoggingPolicy;
+            while (*wz)
+            {
+                if (L'v' == *wz || L'V' == *wz)
+                {
+                    *pdwAttributes |= BURN_LOGGING_ATTRIBUTE_VERBOSE;
+                }
+                else if (L'x' == *wz || L'X' == *wz)
+                {
+                    *pdwAttributes |= BURN_LOGGING_ATTRIBUTE_EXTRADEBUG;
+                }
+
+                ++wz;
+            }
+        }
+    }
+
+    ReleaseStr(sczLoggingPolicy);
+    ReleaseRegKey(hk);
+}
+
+static HRESULT GetNonSessionSpecificTempFolder(
+    __deref_out_z LPWSTR* psczNonSessionTempFolder
+    )
+{
+    HRESULT hr = S_OK;
+    WCHAR wzTempFolder[MAX_PATH] = { };
+    SIZE_T cchTempFolder = 0;
+    DWORD dwSessionId = 0;
+    LPWSTR sczSessionId = 0;
+    SIZE_T cchSessionId = 0;
+
+    if (!::GetTempPathW(countof(wzTempFolder), wzTempFolder))
+    {
+        ExitWithLastError(hr, "Failed to get temp folder.");
+    }
+
+    hr = ::StringCchLengthW(wzTempFolder, countof(wzTempFolder), reinterpret_cast<size_t*>(&cchTempFolder));
+    ExitOnFailure(hr, "Failed to get length of temp folder.");
+
+    // If our session id is in the TEMP path then remove that part so we get the non-session
+    // specific temporary folder.
+    if (::ProcessIdToSessionId(::GetCurrentProcessId(), &dwSessionId))
+    {
+        hr = StrAllocFormatted(&sczSessionId, L"%u\\", dwSessionId);
+        ExitOnFailure(hr, "Failed to format session id as a string.");
+
+        hr = ::StringCchLengthW(sczSessionId, STRSAFE_MAX_CCH, reinterpret_cast<size_t*>(&cchSessionId));
+        ExitOnFailure(hr, "Failed to get length of session id string.");
+
+        if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, 0, wzTempFolder + cchTempFolder - cchSessionId, static_cast<DWORD>(cchSessionId), sczSessionId, static_cast<DWORD>(cchSessionId)))
+        {
+            cchTempFolder -= cchSessionId;
+        }
+    }
+
+    hr = StrAllocString(psczNonSessionTempFolder, wzTempFolder, cchTempFolder);
+    ExitOnFailure(hr, "Failed to copy temp folder.");
+
+LExit:
+    ReleaseStr(sczSessionId);
+
+    return hr;
+}