diff options
Diffstat (limited to 'installer/customactions.c')
| -rw-r--r-- | installer/customactions.c | 357 |
1 files changed, 269 insertions, 88 deletions
diff --git a/installer/customactions.c b/installer/customactions.c index 496d80b1..d3078a31 100644 --- a/installer/customactions.c +++ b/installer/customactions.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: MIT /* - * Copyright (C) 2019 WireGuard LLC. All Rights Reserved. + * Copyright (C) 2019-2022 WireGuard LLC. All Rights Reserved. */ #include <windows.h> @@ -17,7 +17,7 @@ #define MANAGER_SERVICE_NAME TEXT("WireGuardManager") #define TUNNEL_SERVICE_PREFIX TEXT("WireGuardTunnel$") -enum log_level { LOG_LEVEL_INFO, LOG_LEVEL_WARN, LOG_LEVEL_ERR }; +enum log_level { LOG_LEVEL_INFO, LOG_LEVEL_WARN, LOG_LEVEL_ERR, LOG_LEVEL_MSIERR }; static void log_messagef(MSIHANDLE installer, enum log_level level, const TCHAR *format, ...) { @@ -49,6 +49,10 @@ static void log_messagef(MSIHANDLE installer, enum log_level level, const TCHAR template = TEXT("WireGuard error: [1]"); type = INSTALLMESSAGE_ERROR; break; + case LOG_LEVEL_MSIERR: + template = TEXT("[1]"); + type = INSTALLMESSAGE_ERROR; + break; default: goto out; } @@ -78,6 +82,46 @@ static void log_errorf(MSIHANDLE installer, enum log_level level, DWORD error_co LocalFree(system_message); } +__declspec(dllexport) UINT __stdcall CheckWow64(MSIHANDLE installer) +{ + UINT ret = ERROR_SUCCESS; + bool is_com_initialized = SUCCEEDED(CoInitialize(NULL)); + HMODULE kernel32 = GetModuleHandle(TEXT("kernel32.dll")); + BOOL(WINAPI *IsWow64Process2)(HANDLE hProcess, USHORT *pProcessMachine, USHORT *pNativeMachine); + USHORT process_machine, native_machine; + BOOL is_wow64_process; + + if (!kernel32) { + ret = GetLastError(); + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("Failed to get kernel32.dll handle")); + goto out; + } + *(FARPROC *)&IsWow64Process2 = GetProcAddress(kernel32, "IsWow64Process2"); + if (IsWow64Process2) { + if (!IsWow64Process2(GetCurrentProcess(), &process_machine, &native_machine)) { + ret = GetLastError(); + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("Failed to determine Wow64 status from IsWow64Process2")); + goto out; + } + if (process_machine == IMAGE_FILE_MACHINE_UNKNOWN) + goto out; + } else { + if (!IsWow64Process(GetCurrentProcess(), &is_wow64_process)) { + ret = GetLastError(); + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("Failed to determine Wow64 status from IsWow64Process")); + goto out; + } + if (!is_wow64_process) + goto out; + } + log_messagef(installer, LOG_LEVEL_MSIERR, TEXT("You must use the native version of WireGuard on this computer.")); + ret = ERROR_INSTALL_FAILURE; +out: + if (is_com_initialized) + CoUninitialize(); + return ret; +} + static UINT insert_service_control(MSIHANDLE installer, MSIHANDLE view, const TCHAR *service_name, bool start) { static unsigned int index = 0; @@ -126,62 +170,6 @@ out: return ret; } -static bool remove_directory_recursive(MSIHANDLE installer, TCHAR path[MAX_PATH], unsigned int max_depth) -{ - HANDLE find_handle; - WIN32_FIND_DATA find_data; - TCHAR *path_end; - - if (!max_depth) { - log_messagef(installer, LOG_LEVEL_WARN, TEXT("Too many levels of nesting at \"%1\""), path); - return false; - } - - path_end = path + _tcsnlen(path, MAX_PATH); - if (!PathAppend(path, TEXT("*.*"))) { - log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("PathAppend(\"%1\", \"*.*\") failed"), path); - return false; - } - find_handle = FindFirstFileEx(path, FindExInfoBasic, &find_data, FindExSearchNameMatch, NULL, 0); - if (find_handle == INVALID_HANDLE_VALUE) { - log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("FindFirstFileEx(\"%1\") failed"), path); - return false; - } - do { - if (find_data.cFileName[0] == TEXT('.') && (find_data.cFileName[1] == TEXT('\0') || (find_data.cFileName[1] == TEXT('.') && find_data.cFileName[2] == TEXT('\0')))) - continue; - - path_end[0] = TEXT('\0'); - if (!PathAppend(path, find_data.cFileName)) { - log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("PathAppend(\"%1\", \"%2\") failed"), path, find_data.cFileName); - continue; - } - - if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { - remove_directory_recursive(installer, path, max_depth - 1); - continue; - } - - if ((find_data.dwFileAttributes & FILE_ATTRIBUTE_READONLY) && !SetFileAttributes(path, find_data.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY)) - log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("SetFileAttributes(\"%1\") failed"), path); - - if (DeleteFile(path)) - log_messagef(installer, LOG_LEVEL_INFO, TEXT("Deleted \"%1\""), path); - else - log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("DeleteFile(\"%1\") failed"), path); - } while (FindNextFile(find_handle, &find_data)); - FindClose(find_handle); - - path_end[0] = TEXT('\0'); - if (RemoveDirectory(path)) { - log_messagef(installer, LOG_LEVEL_INFO, TEXT("Removed \"%1\""), path); - return true; - } else { - log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("RemoveDirectory(\"%1\") failed"), path); - return false; - } -} - __declspec(dllexport) UINT __stdcall EvaluateWireGuardServices(MSIHANDLE installer) { UINT ret = ERROR_INSTALL_FAILURE; @@ -255,27 +243,82 @@ out: return ret == ERROR_SUCCESS ? ret : ERROR_INSTALL_FAILURE; } -__declspec(dllexport) UINT __stdcall RemoveConfigFolder(MSIHANDLE installer) +__declspec(dllexport) UINT __stdcall LaunchApplicationAndAbort(MSIHANDLE installer) { - LSTATUS ret; + UINT ret = ERROR_INSTALL_FAILURE; TCHAR path[MAX_PATH]; + DWORD path_len = _countof(path); + PROCESS_INFORMATION pi; + STARTUPINFO si = { .cb = sizeof(STARTUPINFO) }; + + ret = MsiGetProperty(installer, TEXT("WireGuardFolder"), path, &path_len); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_WARN, ret, TEXT("MsiGetProperty(\"WireGuardFolder\") failed")); + goto out; + } + if (!path[0] || !PathAppend(path, TEXT("wireguard.exe"))) + goto out; + log_messagef(installer, LOG_LEVEL_INFO, TEXT("Launching %1"), path); + if (!CreateProcess(path, TEXT("wireguard"), NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("Failed to create \"%1\" process"), path); + goto out; + } + CloseHandle(pi.hProcess); + CloseHandle(pi.hThread); +out: + return ERROR_INSTALL_USEREXIT; +} + +__declspec(dllexport) UINT __stdcall EvaluateWireGuardComponents(MSIHANDLE installer) +{ + UINT ret = ERROR_INSTALL_FAILURE; bool is_com_initialized = SUCCEEDED(CoInitialize(NULL)); + INSTALLSTATE component_installed, component_action; + TCHAR path[MAX_PATH]; + DWORD path_len = _countof(path); - ret = SHRegGetPath(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\ProfileList\\S-1-5-18"), - TEXT("ProfileImagePath"), path, 0); + ret = MsiGetComponentState(installer, TEXT("WireGuardExecutable"), &component_installed, &component_action); if (ret != ERROR_SUCCESS) { - log_errorf(installer, LOG_LEVEL_WARN, ret, TEXT("SHRegGetPath failed")); + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("MsiGetComponentState(\"WireGuardExecutable\") failed")); goto out; } - if (!PathAppend(path, TEXT("AppData\\Local\\WireGuard"))) { - log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("PathAppend(\"%1\", \"AppData\\Local\\WireGuard\") failed"), path); + ret = MsiGetProperty(installer, TEXT("WireGuardFolder"), path, &path_len); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("MsiGetProperty(\"WireGuardFolder\") failed")); goto out; } - remove_directory_recursive(installer, path, 10); + + if (component_action >= INSTALLSTATE_LOCAL) { + /* WireGuardExecutable component shall be installed. */ + ret = MsiSetProperty(installer, TEXT("KillWireGuardProcesses"), path); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("MsiSetProperty(\"KillWireGuardProcesses\") failed")); + goto out; + } + } else if (component_action >= INSTALLSTATE_REMOVED) { + /* WireGuardExecutable component shall be uninstalled. */ + ret = MsiSetProperty(installer, TEXT("KillWireGuardProcesses"), path); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("MsiSetProperty(\"KillWireGuardProcesses\") failed")); + goto out; + } + ret = MsiSetProperty(installer, TEXT("RemoveConfigFolder"), path); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("MsiSetProperty(\"RemoveConfigFolder\") failed")); + goto out; + } + ret = MsiSetProperty(installer, TEXT("RemoveAdapters"), path); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_ERR, ret, TEXT("MsiSetProperty(\"RemoveAdapters\") failed")); + goto out; + } + } + ret = ERROR_SUCCESS; + out: if (is_com_initialized) CoUninitialize(); - return ERROR_SUCCESS; + return ret == ERROR_SUCCESS ? ret : ERROR_INSTALL_FAILURE; } struct file_id { DWORD volume, index_high, index_low; }; @@ -299,36 +342,30 @@ static bool calculate_file_id(const TCHAR *path, struct file_id *id) return true; } -static bool calculate_known_file_id(const KNOWNFOLDERID *known_folder, const TCHAR *file, struct file_id *id) -{ - TCHAR *folder_path, process_path[MAX_PATH + 1]; - bool ret = false; - - if (SHGetKnownFolderPath(known_folder, KF_FLAG_DEFAULT, NULL, &folder_path) == S_OK) { - if (PathCombine(process_path, folder_path, file)) { - if (calculate_file_id(process_path, id)) - ret = true; - } - CoTaskMemFree(folder_path); - } - return ret; -} - __declspec(dllexport) UINT __stdcall KillWireGuardProcesses(MSIHANDLE installer) { HANDLE snapshot, process; PROCESSENTRY32 entry = { .dwSize = sizeof(PROCESSENTRY32) }; - TCHAR process_path[MAX_PATH + 1]; - DWORD process_path_len; + TCHAR process_path[MAX_PATH], executable[MAX_PATH]; + DWORD process_path_len = _countof(process_path); struct file_id file_ids[3], file_id; size_t file_ids_len = 0; bool is_com_initialized = SUCCEEDED(CoInitialize(NULL)); + LSTATUS mret; - if (calculate_known_file_id(&FOLDERID_System, TEXT("wg.exe"), &file_ids[file_ids_len])) - ++file_ids_len; - if (calculate_known_file_id(&FOLDERID_SystemX86, TEXT("wg.exe"), &file_ids[file_ids_len])) + mret = MsiGetProperty(installer, TEXT("CustomActionData"), process_path, &process_path_len); + if (mret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_WARN, mret, TEXT("MsiGetProperty(\"CustomActionData\") failed")); + goto out; + } + if (!process_path[0]) + goto out; + + log_messagef(installer, LOG_LEVEL_INFO, TEXT("Detecting running processes")); + + if (PathCombine(executable, process_path, TEXT("wg.exe")) && calculate_file_id(executable, &file_ids[file_ids_len])) ++file_ids_len; - if (calculate_known_file_id(&FOLDERID_ProgramFiles, TEXT("WireGuard\\wireguard.exe"), &file_ids[file_ids_len])) + if (PathCombine(executable, process_path, TEXT("wireguard.exe")) && calculate_file_id(executable, &file_ids[file_ids_len])) ++file_ids_len; if (!file_ids_len) goto out; @@ -371,3 +408,147 @@ out: CoUninitialize(); return ERROR_SUCCESS; } + +static bool remove_directory_recursive(MSIHANDLE installer, TCHAR path[MAX_PATH], unsigned int max_depth) +{ + HANDLE find_handle; + WIN32_FIND_DATA find_data; + TCHAR *path_end; + + if (!max_depth) { + log_messagef(installer, LOG_LEVEL_WARN, TEXT("Too many levels of nesting at \"%1\""), path); + return false; + } + + path_end = path + _tcsnlen(path, MAX_PATH); + if (!PathAppend(path, TEXT("*.*"))) { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("PathAppend(\"%1\", \"*.*\") failed"), path); + return false; + } + find_handle = FindFirstFileEx(path, FindExInfoBasic, &find_data, FindExSearchNameMatch, NULL, 0); + if (find_handle == INVALID_HANDLE_VALUE) { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("FindFirstFileEx(\"%1\") failed"), path); + return false; + } + do { + if (find_data.cFileName[0] == TEXT('.') && (find_data.cFileName[1] == TEXT('\0') || (find_data.cFileName[1] == TEXT('.') && find_data.cFileName[2] == TEXT('\0')))) + continue; + + path_end[0] = TEXT('\0'); + if (!PathAppend(path, find_data.cFileName)) { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("PathAppend(\"%1\", \"%2\") failed"), path, find_data.cFileName); + continue; + } + + if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { + remove_directory_recursive(installer, path, max_depth - 1); + continue; + } + + if ((find_data.dwFileAttributes & FILE_ATTRIBUTE_READONLY) && !SetFileAttributes(path, find_data.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY)) + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("SetFileAttributes(\"%1\") failed"), path); + + if (DeleteFile(path)) + log_messagef(installer, LOG_LEVEL_INFO, TEXT("Deleted \"%1\""), path); + else + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("DeleteFile(\"%1\") failed"), path); + } while (FindNextFile(find_handle, &find_data)); + FindClose(find_handle); + + path_end[0] = TEXT('\0'); + if (RemoveDirectory(path)) { + log_messagef(installer, LOG_LEVEL_INFO, TEXT("Removed \"%1\""), path); + return true; + } else { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("RemoveDirectory(\"%1\") failed"), path); + return false; + } +} + +__declspec(dllexport) UINT __stdcall RemoveConfigFolder(MSIHANDLE installer) +{ + LSTATUS ret; + TCHAR path[MAX_PATH]; + DWORD path_len = _countof(path); + bool is_com_initialized = SUCCEEDED(CoInitialize(NULL)); + + ret = MsiGetProperty(installer, TEXT("CustomActionData"), path, &path_len); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_WARN, ret, TEXT("MsiGetProperty(\"CustomActionData\") failed")); + goto out; + } + if (!path[0] || !PathAppend(path, TEXT("Data"))) + goto out; + remove_directory_recursive(installer, path, 10); + RegDeleteKey(HKEY_LOCAL_MACHINE, TEXT("Software\\WireGuard")); // Assumes no WOW. +out: + if (is_com_initialized) + CoUninitialize(); + return ERROR_SUCCESS; +} + +__declspec(dllexport) UINT __stdcall RemoveAdapters(MSIHANDLE installer) +{ + UINT ret; + bool is_com_initialized = SUCCEEDED(CoInitialize(NULL)); + TCHAR path[MAX_PATH]; + DWORD path_len = _countof(path); + HANDLE pipe; + char buf[0x200]; + DWORD offset = 0, size_read; + PROCESS_INFORMATION pi; + STARTUPINFO si = { + .cb = sizeof(STARTUPINFO), + .dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES, + .wShowWindow = SW_HIDE + }; + + ret = MsiGetProperty(installer, TEXT("CustomActionData"), path, &path_len); + if (ret != ERROR_SUCCESS) { + log_errorf(installer, LOG_LEVEL_WARN, ret, TEXT("MsiGetProperty(\"CustomActionData\") failed")); + goto out; + } + if (!path[0] || !PathAppend(path, TEXT("wireguard.exe"))) + goto out; + + if (!CreatePipe(&pipe, &si.hStdOutput, NULL, 0)) { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("CreatePipe failed")); + goto out; + } + if (!SetHandleInformation(si.hStdOutput, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT)) { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("SetHandleInformation failed")); + goto cleanup_pipe_w; + } + if (!CreateProcess(path, TEXT("wireguard /removedriver"), NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) { + log_errorf(installer, LOG_LEVEL_WARN, GetLastError(), TEXT("Failed to create \"%1\" process"), path); + goto cleanup_pipe_w; + } + CloseHandle(si.hStdOutput); + buf[sizeof(buf) - 1] = '\0'; + while (ReadFile(pipe, buf + offset, sizeof(buf) - offset - 1, &size_read, NULL)) { + char *nl; + buf[offset + size_read] = '\0'; + nl = strchr(buf, '\n'); + if (!nl) { + offset = size_read; + continue; + } + nl[0] = '\0'; + log_messagef(installer, LOG_LEVEL_INFO, TEXT("%1!hs!"), buf); + offset = strlen(&nl[1]); + memmove(buf, &nl[1], offset); + } + WaitForSingleObject(pi.hProcess, INFINITE); + CloseHandle(pi.hProcess); + CloseHandle(pi.hThread); + goto cleanup_pipe_r; + +cleanup_pipe_w: + CloseHandle(si.hStdOutput); +cleanup_pipe_r: + CloseHandle(pipe); +out: + if (is_com_initialized) + CoUninitialize(); + return ERROR_SUCCESS; +} |