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-rw-r--r--toolkit/mozapps/update/common/updatehelper.cpp763
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diff --git a/toolkit/mozapps/update/common/updatehelper.cpp b/toolkit/mozapps/update/common/updatehelper.cpp
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <windows.h>
+
+// Needed for CreateToolhelp32Snapshot
+#include <tlhelp32.h>
+
+#include <stdio.h>
+#include <direct.h>
+#include "shlobj.h"
+
+// Needed for PathAppendW
+#include <shlwapi.h>
+
+#include "updatehelper.h"
+#include "updateutils_win.h"
+
+#ifdef MOZ_MAINTENANCE_SERVICE
+# include "mozilla/UniquePtr.h"
+# include "pathhash.h"
+# include "registrycertificates.h"
+# include "uachelper.h"
+
+using mozilla::MakeUnique;
+using mozilla::UniquePtr;
+#endif
+
+BOOL PathGetSiblingFilePath(LPWSTR destinationBuffer, LPCWSTR siblingFilePath,
+ LPCWSTR newFileName);
+
+/**
+ * Obtains the path of a file in the same directory as the specified file.
+ *
+ * @param destinationBuffer A buffer of size MAX_PATH + 1 to store the result.
+ * @param siblingFilePath The path of another file in the same directory
+ * @param newFileName The filename of another file in the same directory
+ * @return TRUE if successful
+ */
+BOOL PathGetSiblingFilePath(LPWSTR destinationBuffer, LPCWSTR siblingFilePath,
+ LPCWSTR newFileName) {
+ if (wcslen(siblingFilePath) > MAX_PATH) {
+ return FALSE;
+ }
+
+ wcsncpy(destinationBuffer, siblingFilePath, MAX_PATH + 1);
+ if (!PathRemoveFileSpecW(destinationBuffer)) {
+ return FALSE;
+ }
+
+ return PathAppendSafe(destinationBuffer, newFileName);
+}
+
+/**
+ * Obtains the path of the secure directory used to write the status and log
+ * files for updates applied with an elevated updater or an updater that is
+ * launched using the maintenance service.
+ *
+ * Example
+ * Destination buffer value:
+ * C:\Program Files (x86)\Mozilla Maintenance Service\UpdateLogs
+ *
+ * @param outBuf
+ * A buffer of size MAX_PATH + 1 to store the result.
+ * @return TRUE if successful
+ */
+BOOL GetSecureOutputDirectoryPath(LPWSTR outBuf) {
+ PWSTR progFilesX86;
+ if (FAILED(SHGetKnownFolderPath(FOLDERID_ProgramFilesX86, KF_FLAG_CREATE,
+ nullptr, &progFilesX86))) {
+ return FALSE;
+ }
+ if (wcslen(progFilesX86) > MAX_PATH) {
+ CoTaskMemFree(progFilesX86);
+ return FALSE;
+ }
+ wcsncpy(outBuf, progFilesX86, MAX_PATH + 1);
+ CoTaskMemFree(progFilesX86);
+
+ if (!PathAppendSafe(outBuf, L"Mozilla Maintenance Service")) {
+ return FALSE;
+ }
+
+ // Create the Maintenance Service directory in case it doesn't exist.
+ if (!CreateDirectoryW(outBuf, nullptr) &&
+ GetLastError() != ERROR_ALREADY_EXISTS) {
+ return FALSE;
+ }
+
+ if (!PathAppendSafe(outBuf, L"UpdateLogs")) {
+ return FALSE;
+ }
+
+ // Create the secure update output directory in case it doesn't exist.
+ if (!CreateDirectoryW(outBuf, nullptr) &&
+ GetLastError() != ERROR_ALREADY_EXISTS) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/**
+ * Obtains the name of the update output file using the update patch directory
+ * path and file extension (must include the '.' separator) passed to this
+ * function.
+ *
+ * Example
+ * Patch directory path parameter:
+ * C:\ProgramData\Mozilla\updates\0123456789ABCDEF\updates\0
+ * File extension parameter:
+ * .status
+ * Destination buffer value:
+ * 0123456789ABCDEF.status
+ *
+ * @param patchDirPath
+ * The path to the update patch directory.
+ * @param fileExt
+ * The file extension for the file including the '.' separator.
+ * @param outBuf
+ * A buffer of size MAX_PATH + 1 to store the result.
+ * @return TRUE if successful
+ */
+BOOL GetSecureOutputFileName(LPCWSTR patchDirPath, LPCWSTR fileExt,
+ LPWSTR outBuf) {
+ size_t fullPathLen = wcslen(patchDirPath);
+ if (fullPathLen > MAX_PATH) {
+ return FALSE;
+ }
+
+ size_t relPathLen = wcslen(PATCH_DIR_PATH);
+ if (relPathLen > fullPathLen) {
+ return FALSE;
+ }
+
+ // The patch directory path must end with updates\0 for updates applied with
+ // an elevated updater or an updater that is launched using the maintenance
+ // service.
+ if (_wcsnicmp(patchDirPath + fullPathLen - relPathLen, PATCH_DIR_PATH,
+ relPathLen) != 0) {
+ return FALSE;
+ }
+
+ wcsncpy(outBuf, patchDirPath, MAX_PATH + 1);
+ if (!PathRemoveFileSpecW(outBuf)) {
+ return FALSE;
+ }
+
+ if (!PathRemoveFileSpecW(outBuf)) {
+ return FALSE;
+ }
+
+ PathStripPathW(outBuf);
+
+ size_t outBufLen = wcslen(outBuf);
+ size_t fileExtLen = wcslen(fileExt);
+ if (outBufLen + fileExtLen > MAX_PATH) {
+ return FALSE;
+ }
+
+ wcsncat(outBuf, fileExt, fileExtLen);
+
+ return TRUE;
+}
+
+/**
+ * Obtains the full path of the secure update output file using the update patch
+ * directory path and file extension (must include the '.' separator) passed to
+ * this function.
+ *
+ * Example
+ * Patch directory path parameter:
+ * C:\ProgramData\Mozilla\updates\0123456789ABCDEF\updates\0
+ * File extension parameter:
+ * .status
+ * Destination buffer value:
+ * C:\Program Files (x86)\Mozilla Maintenance
+ * Service\UpdateLogs\0123456789ABCDEF.status
+ *
+ * @param patchDirPath
+ * The path to the update patch directory.
+ * @param fileExt
+ * The file extension for the file including the '.' separator.
+ * @param outBuf
+ * A buffer of size MAX_PATH + 1 to store the result.
+ * @return TRUE if successful
+ */
+BOOL GetSecureOutputFilePath(LPCWSTR patchDirPath, LPCWSTR fileExt,
+ LPWSTR outBuf) {
+ if (!GetSecureOutputDirectoryPath(outBuf)) {
+ return FALSE;
+ }
+
+ WCHAR statusFileName[MAX_PATH + 1] = {L'\0'};
+ if (!GetSecureOutputFileName(patchDirPath, fileExt, statusFileName)) {
+ return FALSE;
+ }
+
+ return PathAppendSafe(outBuf, statusFileName);
+}
+
+/**
+ * Writes a UUID to the ID file in the secure output directory. This is used by
+ * the unelevated updater to determine whether an existing update status file in
+ * the secure output directory has been updated.
+ *
+ * @param patchDirPath
+ * The path to the update patch directory.
+ * @return TRUE if successful
+ */
+BOOL WriteSecureIDFile(LPCWSTR patchDirPath) {
+ WCHAR uuidString[MAX_PATH + 1] = {L'\0'};
+ if (!GetUUIDString(uuidString)) {
+ return FALSE;
+ }
+
+ WCHAR idFilePath[MAX_PATH + 1] = {L'\0'};
+ if (!GetSecureOutputFilePath(patchDirPath, L".id", idFilePath)) {
+ return FALSE;
+ }
+
+ FILE* idFile = _wfopen(idFilePath, L"wb+");
+ if (idFile == nullptr) {
+ return FALSE;
+ }
+
+ if (fprintf(idFile, "%ls\n", uuidString) == -1) {
+ fclose(idFile);
+ return FALSE;
+ }
+
+ fclose(idFile);
+
+ return TRUE;
+}
+
+/**
+ * Removes the update status and log files from the secure output directory.
+ *
+ * @param patchDirPath
+ * The path to the update patch directory.
+ */
+void RemoveSecureOutputFiles(LPCWSTR patchDirPath) {
+ WCHAR filePath[MAX_PATH + 1] = {L'\0'};
+ if (GetSecureOutputFilePath(patchDirPath, L".id", filePath)) {
+ (void)_wremove(filePath);
+ }
+ if (GetSecureOutputFilePath(patchDirPath, L".status", filePath)) {
+ (void)_wremove(filePath);
+ }
+ if (GetSecureOutputFilePath(patchDirPath, L".log", filePath)) {
+ (void)_wremove(filePath);
+ }
+}
+
+#ifdef MOZ_MAINTENANCE_SERVICE
+/**
+ * Starts the upgrade process for update of the service if it is
+ * already installed.
+ *
+ * @param installDir the installation directory where
+ * maintenanceservice_installer.exe is located.
+ * @return TRUE if successful
+ */
+BOOL StartServiceUpdate(LPCWSTR installDir) {
+ // Get a handle to the local computer SCM database
+ SC_HANDLE manager = OpenSCManager(nullptr, nullptr, SC_MANAGER_ALL_ACCESS);
+ if (!manager) {
+ return FALSE;
+ }
+
+ // Open the service
+ SC_HANDLE svc = OpenServiceW(manager, SVC_NAME, SERVICE_ALL_ACCESS);
+ if (!svc) {
+ CloseServiceHandle(manager);
+ return FALSE;
+ }
+
+ // If we reach here, then the service is installed, so
+ // proceed with upgrading it.
+
+ CloseServiceHandle(manager);
+
+ // The service exists and we opened it, get the config bytes needed
+ DWORD bytesNeeded;
+ if (!QueryServiceConfigW(svc, nullptr, 0, &bytesNeeded) &&
+ GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ CloseServiceHandle(svc);
+ return FALSE;
+ }
+
+ // Get the service config information, in particular we want the binary
+ // path of the service.
+ UniquePtr<char[]> serviceConfigBuffer = MakeUnique<char[]>(bytesNeeded);
+ if (!QueryServiceConfigW(
+ svc,
+ reinterpret_cast<QUERY_SERVICE_CONFIGW*>(serviceConfigBuffer.get()),
+ bytesNeeded, &bytesNeeded)) {
+ CloseServiceHandle(svc);
+ return FALSE;
+ }
+
+ CloseServiceHandle(svc);
+
+ QUERY_SERVICE_CONFIGW& serviceConfig =
+ *reinterpret_cast<QUERY_SERVICE_CONFIGW*>(serviceConfigBuffer.get());
+
+ PathUnquoteSpacesW(serviceConfig.lpBinaryPathName);
+
+ // Obtain the temp path of the maintenance service binary
+ WCHAR tmpService[MAX_PATH + 1] = {L'\0'};
+ if (!PathGetSiblingFilePath(tmpService, serviceConfig.lpBinaryPathName,
+ L"maintenanceservice_tmp.exe")) {
+ return FALSE;
+ }
+
+ if (wcslen(installDir) > MAX_PATH) {
+ return FALSE;
+ }
+
+ // Get the new maintenance service path from the install dir
+ WCHAR newMaintServicePath[MAX_PATH + 1] = {L'\0'};
+ wcsncpy(newMaintServicePath, installDir, MAX_PATH);
+ PathAppendSafe(newMaintServicePath, L"maintenanceservice.exe");
+
+ // Copy the temp file in alongside the maintenace service.
+ // This is a requirement for maintenance service upgrades.
+ if (!CopyFileW(newMaintServicePath, tmpService, FALSE)) {
+ return FALSE;
+ }
+
+ // Check that the copied file's certificate matches the expected name and
+ // issuer stored in the registry for this installation and that the
+ // certificate is trusted by the system's certificate store.
+ if (!DoesBinaryMatchAllowedCertificates(installDir, tmpService)) {
+ DeleteFileW(tmpService);
+ return FALSE;
+ }
+
+ // Start the upgrade comparison process
+ STARTUPINFOW si = {0};
+ si.cb = sizeof(STARTUPINFOW);
+ // No particular desktop because no UI
+ si.lpDesktop = const_cast<LPWSTR>(L""); // -Wwritable-strings
+ PROCESS_INFORMATION pi = {0};
+ WCHAR cmdLine[64] = {'\0'};
+ wcsncpy(cmdLine, L"dummyparam.exe upgrade",
+ sizeof(cmdLine) / sizeof(cmdLine[0]) - 1);
+ BOOL svcUpdateProcessStarted =
+ CreateProcessW(tmpService, cmdLine, nullptr, nullptr, FALSE, 0, nullptr,
+ installDir, &si, &pi);
+ if (svcUpdateProcessStarted) {
+ CloseHandle(pi.hProcess);
+ CloseHandle(pi.hThread);
+ }
+ return svcUpdateProcessStarted;
+}
+
+/**
+ * Executes a maintenance service command
+ *
+ * @param argc The total number of arguments in argv
+ * @param argv An array of null terminated strings to pass to the service,
+ * @return ERROR_SUCCESS if the service command was started.
+ * Less than 16000, a windows system error code from StartServiceW
+ * More than 20000, 20000 + the last state of the service constant if
+ * the last state is something other than stopped.
+ * 17001 if the SCM could not be opened
+ * 17002 if the service could not be opened
+ */
+DWORD
+StartServiceCommand(int argc, LPCWSTR* argv) {
+ DWORD lastState = WaitForServiceStop(SVC_NAME, 5);
+ if (lastState != SERVICE_STOPPED) {
+ return 20000 + lastState;
+ }
+
+ // Get a handle to the SCM database.
+ SC_HANDLE serviceManager = OpenSCManager(
+ nullptr, nullptr, SC_MANAGER_CONNECT | SC_MANAGER_ENUMERATE_SERVICE);
+ if (!serviceManager) {
+ return 17001;
+ }
+
+ // Get a handle to the service.
+ SC_HANDLE service = OpenServiceW(serviceManager, SVC_NAME, SERVICE_START);
+ if (!service) {
+ CloseServiceHandle(serviceManager);
+ return 17002;
+ }
+
+ // Wait at most 5 seconds trying to start the service in case of errors
+ // like ERROR_SERVICE_DATABASE_LOCKED or ERROR_SERVICE_REQUEST_TIMEOUT.
+ const DWORD maxWaitMS = 5000;
+ DWORD currentWaitMS = 0;
+ DWORD lastError = ERROR_SUCCESS;
+ while (currentWaitMS < maxWaitMS) {
+ BOOL result = StartServiceW(service, argc, argv);
+ if (result) {
+ lastError = ERROR_SUCCESS;
+ break;
+ } else {
+ lastError = GetLastError();
+ }
+ Sleep(100);
+ currentWaitMS += 100;
+ }
+ CloseServiceHandle(service);
+ CloseServiceHandle(serviceManager);
+ return lastError;
+}
+
+/**
+ * Launch a service initiated action for a software update with the
+ * specified arguments.
+ *
+ * @param argc The total number of arguments in argv
+ * @param argv An array of null terminated strings to pass to the exePath,
+ * argv[0] must be the path to the updater.exe
+ * @return ERROR_SUCCESS if successful
+ */
+DWORD
+LaunchServiceSoftwareUpdateCommand(int argc, LPCWSTR* argv) {
+ // The service command is the same as the updater.exe command line except
+ // it has 4 extra args:
+ // 0) The name of the service, automatically added by Windows
+ // 1) "MozillaMaintenance" (I think this is redundant with 0)
+ // 2) The command being executed, which is "software-update"
+ // 3) The path to updater.exe (from argv[0])
+ LPCWSTR* updaterServiceArgv = new LPCWSTR[argc + 2];
+ updaterServiceArgv[0] = L"MozillaMaintenance";
+ updaterServiceArgv[1] = L"software-update";
+
+ for (int i = 0; i < argc; ++i) {
+ updaterServiceArgv[i + 2] = argv[i];
+ }
+
+ // Execute the service command by starting the service with
+ // the passed in arguments.
+ DWORD ret = StartServiceCommand(argc + 2, updaterServiceArgv);
+ delete[] updaterServiceArgv;
+ return ret;
+}
+
+/**
+ * Writes a specific failure code for the update status to a file in the secure
+ * output directory. The status file's name without the '.' separator and
+ * extension is the same as the update directory name.
+ *
+ * @param patchDirPath
+ * The path of the update patch directory.
+ * @param errorCode
+ * Error code to set
+ * @return TRUE if successful
+ */
+BOOL WriteStatusFailure(LPCWSTR patchDirPath, int errorCode) {
+ WCHAR statusFilePath[MAX_PATH + 1] = {L'\0'};
+ if (!GetSecureOutputFilePath(patchDirPath, L".status", statusFilePath)) {
+ return FALSE;
+ }
+
+ HANDLE hStatusFile = CreateFileW(statusFilePath, GENERIC_WRITE, 0, nullptr,
+ CREATE_ALWAYS, 0, nullptr);
+ if (hStatusFile == INVALID_HANDLE_VALUE) {
+ return FALSE;
+ }
+
+ char failure[32];
+ sprintf(failure, "failed: %d", errorCode);
+ DWORD toWrite = strlen(failure);
+ DWORD wrote;
+ BOOL ok = WriteFile(hStatusFile, failure, toWrite, &wrote, nullptr);
+ CloseHandle(hStatusFile);
+
+ if (!ok || wrote != toWrite) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/**
+ * Waits for a service to enter a stopped state.
+ * This function does not stop the service, it just blocks until the service
+ * is stopped.
+ *
+ * @param serviceName The service to wait for.
+ * @param maxWaitSeconds The maximum number of seconds to wait
+ * @return state of the service after a timeout or when stopped.
+ * A value of 255 is returned for an error. Typical values are:
+ * SERVICE_STOPPED 0x00000001
+ * SERVICE_START_PENDING 0x00000002
+ * SERVICE_STOP_PENDING 0x00000003
+ * SERVICE_RUNNING 0x00000004
+ * SERVICE_CONTINUE_PENDING 0x00000005
+ * SERVICE_PAUSE_PENDING 0x00000006
+ * SERVICE_PAUSED 0x00000007
+ * last status not set 0x000000CF
+ * Could no query status 0x000000DF
+ * Could not open service, access denied 0x000000EB
+ * Could not open service, invalid handle 0x000000EC
+ * Could not open service, invalid name 0x000000ED
+ * Could not open service, does not exist 0x000000EE
+ * Could not open service, other error 0x000000EF
+ * Could not open SCM, access denied 0x000000FD
+ * Could not open SCM, database does not exist 0x000000FE;
+ * Could not open SCM, other error 0x000000FF;
+ * Note: The strange choice of error codes above SERVICE_PAUSED are chosen
+ * in case Windows comes out with other service stats higher than 7, they
+ * would likely call it 8 and above. JS code that uses this in TestAUSHelper
+ * only handles values up to 255 so that's why we don't use GetLastError
+ * directly.
+ */
+DWORD
+WaitForServiceStop(LPCWSTR serviceName, DWORD maxWaitSeconds) {
+ // 0x000000CF is defined above to be not set
+ DWORD lastServiceState = 0x000000CF;
+
+ // Get a handle to the SCM database.
+ SC_HANDLE serviceManager = OpenSCManager(
+ nullptr, nullptr, SC_MANAGER_CONNECT | SC_MANAGER_ENUMERATE_SERVICE);
+ if (!serviceManager) {
+ DWORD lastError = GetLastError();
+ switch (lastError) {
+ case ERROR_ACCESS_DENIED:
+ return 0x000000FD;
+ case ERROR_DATABASE_DOES_NOT_EXIST:
+ return 0x000000FE;
+ default:
+ return 0x000000FF;
+ }
+ }
+
+ // Get a handle to the service.
+ SC_HANDLE service =
+ OpenServiceW(serviceManager, serviceName, SERVICE_QUERY_STATUS);
+ if (!service) {
+ DWORD lastError = GetLastError();
+ CloseServiceHandle(serviceManager);
+ switch (lastError) {
+ case ERROR_ACCESS_DENIED:
+ return 0x000000EB;
+ case ERROR_INVALID_HANDLE:
+ return 0x000000EC;
+ case ERROR_INVALID_NAME:
+ return 0x000000ED;
+ case ERROR_SERVICE_DOES_NOT_EXIST:
+ return 0x000000EE;
+ default:
+ return 0x000000EF;
+ }
+ }
+
+ DWORD currentWaitMS = 0;
+ SERVICE_STATUS_PROCESS ssp;
+ ssp.dwCurrentState = lastServiceState;
+ while (currentWaitMS < maxWaitSeconds * 1000) {
+ DWORD bytesNeeded;
+ if (!QueryServiceStatusEx(service, SC_STATUS_PROCESS_INFO, (LPBYTE)&ssp,
+ sizeof(SERVICE_STATUS_PROCESS), &bytesNeeded)) {
+ DWORD lastError = GetLastError();
+ switch (lastError) {
+ case ERROR_INVALID_HANDLE:
+ ssp.dwCurrentState = 0x000000D9;
+ break;
+ case ERROR_ACCESS_DENIED:
+ ssp.dwCurrentState = 0x000000DA;
+ break;
+ case ERROR_INSUFFICIENT_BUFFER:
+ ssp.dwCurrentState = 0x000000DB;
+ break;
+ case ERROR_INVALID_PARAMETER:
+ ssp.dwCurrentState = 0x000000DC;
+ break;
+ case ERROR_INVALID_LEVEL:
+ ssp.dwCurrentState = 0x000000DD;
+ break;
+ case ERROR_SHUTDOWN_IN_PROGRESS:
+ ssp.dwCurrentState = 0x000000DE;
+ break;
+ // These 3 errors can occur when the service is not yet stopped but
+ // it is stopping.
+ case ERROR_INVALID_SERVICE_CONTROL:
+ case ERROR_SERVICE_CANNOT_ACCEPT_CTRL:
+ case ERROR_SERVICE_NOT_ACTIVE:
+ currentWaitMS += 50;
+ Sleep(50);
+ continue;
+ default:
+ ssp.dwCurrentState = 0x000000DF;
+ }
+
+ // We couldn't query the status so just break out
+ break;
+ }
+
+ // The service is already in use.
+ if (ssp.dwCurrentState == SERVICE_STOPPED) {
+ break;
+ }
+ currentWaitMS += 50;
+ Sleep(50);
+ }
+
+ lastServiceState = ssp.dwCurrentState;
+ CloseServiceHandle(service);
+ CloseServiceHandle(serviceManager);
+ return lastServiceState;
+}
+#endif
+
+/**
+ * Determines if there is at least one process running for the specified
+ * application. A match will be found across any session for any user.
+ *
+ * @param process The process to check for existance
+ * @return ERROR_NOT_FOUND if the process was not found
+ * ERROR_SUCCESS if the process was found and there were no errors
+ * Other Win32 system error code for other errors
+ **/
+DWORD
+IsProcessRunning(LPCWSTR filename) {
+ // Take a snapshot of all processes in the system.
+ HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+ if (INVALID_HANDLE_VALUE == snapshot) {
+ return GetLastError();
+ }
+
+ PROCESSENTRY32W processEntry;
+ processEntry.dwSize = sizeof(PROCESSENTRY32W);
+ if (!Process32FirstW(snapshot, &processEntry)) {
+ DWORD lastError = GetLastError();
+ CloseHandle(snapshot);
+ return lastError;
+ }
+
+ do {
+ if (wcsicmp(filename, processEntry.szExeFile) == 0) {
+ CloseHandle(snapshot);
+ return ERROR_SUCCESS;
+ }
+ } while (Process32NextW(snapshot, &processEntry));
+ CloseHandle(snapshot);
+ return ERROR_NOT_FOUND;
+}
+
+/**
+ * Waits for the specified application to exit.
+ *
+ * @param filename The application to wait for.
+ * @param maxSeconds The maximum amount of seconds to wait for all
+ * instances of the application to exit.
+ * @return ERROR_SUCCESS if no instances of the application exist
+ * WAIT_TIMEOUT if the process is still running after maxSeconds.
+ * Any other Win32 system error code.
+ */
+DWORD
+WaitForProcessExit(LPCWSTR filename, DWORD maxSeconds) {
+ DWORD applicationRunningError = WAIT_TIMEOUT;
+ for (DWORD i = 0; i < maxSeconds; i++) {
+ DWORD applicationRunningError = IsProcessRunning(filename);
+ if (ERROR_NOT_FOUND == applicationRunningError) {
+ return ERROR_SUCCESS;
+ }
+ Sleep(1000);
+ }
+
+ if (ERROR_SUCCESS == applicationRunningError) {
+ return WAIT_TIMEOUT;
+ }
+
+ return applicationRunningError;
+}
+
+#ifdef MOZ_MAINTENANCE_SERVICE
+/**
+ * Determines if the fallback key exists or not
+ *
+ * @return TRUE if the fallback key exists and there was no error checking
+ */
+BOOL DoesFallbackKeyExist() {
+ HKEY testOnlyFallbackKey;
+ if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, TEST_ONLY_FALLBACK_KEY_PATH, 0,
+ KEY_READ | KEY_WOW64_64KEY,
+ &testOnlyFallbackKey) != ERROR_SUCCESS) {
+ return FALSE;
+ }
+
+ RegCloseKey(testOnlyFallbackKey);
+ return TRUE;
+}
+
+/**
+ * Determines if the file system for the specified file handle is local
+ * @param file path to check the filesystem type for, must be at most MAX_PATH
+ * @param isLocal out parameter which will hold TRUE if the drive is local
+ * @return TRUE if the call succeeded
+ */
+BOOL IsLocalFile(LPCWSTR file, BOOL& isLocal) {
+ WCHAR rootPath[MAX_PATH + 1] = {L'\0'};
+ if (wcslen(file) > MAX_PATH) {
+ return FALSE;
+ }
+
+ wcsncpy(rootPath, file, MAX_PATH);
+ PathStripToRootW(rootPath);
+ isLocal = GetDriveTypeW(rootPath) == DRIVE_FIXED;
+ return TRUE;
+}
+
+/**
+ * Determines the DWORD value of a registry key value
+ *
+ * @param key The base key to where the value name exists
+ * @param valueName The name of the value
+ * @param retValue Out parameter which will hold the value
+ * @return TRUE on success
+ */
+static BOOL GetDWORDValue(HKEY key, LPCWSTR valueName, DWORD& retValue) {
+ DWORD regDWORDValueSize = sizeof(DWORD);
+ LONG retCode =
+ RegQueryValueExW(key, valueName, 0, nullptr,
+ reinterpret_cast<LPBYTE>(&retValue), &regDWORDValueSize);
+ return ERROR_SUCCESS == retCode;
+}
+
+/**
+ * Determines if the the system's elevation type allows
+ * unprmopted elevation.
+ *
+ * @param isUnpromptedElevation Out parameter which specifies if unprompted
+ * elevation is allowed.
+ * @return TRUE if the user can actually elevate and the value was obtained
+ * successfully.
+ */
+BOOL IsUnpromptedElevation(BOOL& isUnpromptedElevation) {
+ if (!UACHelper::CanUserElevate()) {
+ return FALSE;
+ }
+
+ LPCWSTR UACBaseRegKey =
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
+ HKEY baseKey;
+ LONG retCode =
+ RegOpenKeyExW(HKEY_LOCAL_MACHINE, UACBaseRegKey, 0, KEY_READ, &baseKey);
+ if (retCode != ERROR_SUCCESS) {
+ return FALSE;
+ }
+
+ DWORD consent, secureDesktop;
+ BOOL success = GetDWORDValue(baseKey, L"ConsentPromptBehaviorAdmin", consent);
+ success = success &&
+ GetDWORDValue(baseKey, L"PromptOnSecureDesktop", secureDesktop);
+
+ RegCloseKey(baseKey);
+ if (success) {
+ isUnpromptedElevation = !consent && !secureDesktop;
+ }
+
+ return success;
+}
+#endif