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#include "wm.h"
#include "common/mallocHelper.h"
#include "common/io.h"
#include "common/library.h"
#include "common/processing.h"
#include "common/windows/nt.h"
#include "common/windows/unicode.h"
#include "common/windows/version.h"
#include <stdalign.h>
#include <windows.h>
#include <ntstatus.h>
#include <shlobj.h>
#include <softpub.h>
typedef enum {
FF_PROCESS_TYPE_NONE,
FF_PROCESS_TYPE_SIGNED = 1 << 0,
FF_PROCESS_TYPE_WINDOWS_STORE = 1 << 1,
FF_PROCESS_TYPE_GUI = 1 << 2,
FF_PROCESS_TYPE_CUI = 1 << 3,
} FFProcessType;
static bool verifySignature(const wchar_t* filePath) {
FF_LIBRARY_LOAD(wintrust, true, "wintrust" FF_LIBRARY_EXTENSION, -1)
FF_LIBRARY_LOAD_SYMBOL(wintrust, WinVerifyTrustEx, true)
WINTRUST_FILE_INFO fileInfo = {
.cbStruct = sizeof(fileInfo),
.pcwszFilePath = filePath,
};
GUID actionID = WINTRUST_ACTION_GENERIC_VERIFY_V2;
WINTRUST_DATA trustData = {
.cbStruct = sizeof(trustData),
.dwUIChoice = WTD_UI_NONE,
.fdwRevocationChecks = WTD_REVOKE_NONE,
.dwUnionChoice = WTD_CHOICE_FILE,
.pFile = &fileInfo,
.dwStateAction = WTD_STATEACTION_VERIFY,
.dwProvFlags = WTD_SAFER_FLAG,
};
LONG status = ffWinVerifyTrustEx(NULL, &actionID, &trustData);
trustData.dwStateAction = WTD_STATEACTION_CLOSE;
ffWinVerifyTrustEx(NULL, &actionID, &trustData);
return status == ERROR_SUCCESS;
}
static bool isProcessTrusted(DWORD processId, FFProcessType processType, UNICODE_STRING* buffer, size_t bufSize) {
FF_AUTO_CLOSE_FD HANDLE hProcess = NULL;
if (!NT_SUCCESS(NtOpenProcess(&hProcess, PROCESS_QUERY_LIMITED_INFORMATION, &(OBJECT_ATTRIBUTES) {
.Length = sizeof(OBJECT_ATTRIBUTES),
},
&(CLIENT_ID) { .UniqueProcess = (HANDLE) (uintptr_t) processId }))) {
return false;
}
ULONG size;
if (!NT_SUCCESS(NtQueryInformationProcess(hProcess, ProcessImageFileNameWin32, buffer, (ULONG) bufSize, &size)) ||
buffer->Length == 0) {
return false;
}
assert(buffer->MaximumLength >= buffer->Length + 2); // NULL terminated
if (processType & FF_PROCESS_TYPE_WINDOWS_STORE) {
static wchar_t windowsAppsPath[MAX_PATH];
static uint32_t windowsAppsPathLen;
if (windowsAppsPathLen == 0) {
PWSTR pPath = NULL;
if (SUCCEEDED(SHGetKnownFolderPath(&FOLDERID_ProgramFiles, KF_FLAG_DEFAULT, NULL, &pPath))) {
windowsAppsPathLen = (uint32_t) wcslen(pPath);
memcpy(windowsAppsPath, pPath, windowsAppsPathLen * sizeof(wchar_t));
memcpy(windowsAppsPath + windowsAppsPathLen, L"\\WindowsApps\\", sizeof(L"\\WindowsApps\\"));
windowsAppsPathLen += strlen("\\WindowsApps\\");
} else {
windowsAppsPathLen = -1u;
}
CoTaskMemFree(pPath);
}
if (windowsAppsPathLen != -1u &&
(buffer->Length <= windowsAppsPathLen * sizeof(wchar_t) || // Path is too short to be in WindowsApps
_wcsnicmp(buffer->Buffer, windowsAppsPath, windowsAppsPathLen) != 0) // Path does not start with WindowsApps
) {
return false;
}
}
if (processType & FF_PROCESS_TYPE_SIGNED) {
if (!verifySignature(buffer->Buffer)) {
return false;
}
}
if (processType & (FF_PROCESS_TYPE_GUI | FF_PROCESS_TYPE_CUI)) {
SECTION_IMAGE_INFORMATION info = {};
if (!NT_SUCCESS(NtQueryInformationProcess(hProcess, ProcessImageInformation, &info, sizeof(info), &size)) ||
size != sizeof(info)) {
return false;
}
if ((processType & FF_PROCESS_TYPE_GUI) && info.SubSystemType != IMAGE_SUBSYSTEM_WINDOWS_GUI) {
return false;
}
if ((processType & FF_PROCESS_TYPE_CUI) && info.SubSystemType != IMAGE_SUBSYSTEM_WINDOWS_CUI) {
return false;
}
}
return true;
}
#define ffStrEqualNWS(str, compareTo) (_wcsnicmp(str, L##compareTo, sizeof(compareTo) - 1) == 0)
const char* ffDetectWMPlugin(FFstrbuf* pluginName) {
alignas(UNICODE_STRING) uint8_t buffer[4096];
UNICODE_STRING* filePath = (UNICODE_STRING*) buffer;
SYSTEM_PROCESS_INFORMATION* FF_AUTO_FREE pstart = NULL;
// Multiple attempts in case processes change while
// we are in the middle of querying them.
ULONG size = 0;
for (int attempts = 0;; ++attempts) {
if (size) {
pstart = (SYSTEM_PROCESS_INFORMATION*) realloc(pstart, size);
assert(pstart);
}
NTSTATUS status = NtQuerySystemInformation(SystemProcessInformation, pstart, size, &size);
if (NT_SUCCESS(status)) {
break;
} else if (status == STATUS_INFO_LENGTH_MISMATCH && attempts < 4) {
size += sizeof(SYSTEM_PROCESS_INFORMATION) * 5;
} else {
return "NtQuerySystemInformation(SystemProcessInformation) failed";
}
}
for (SYSTEM_PROCESS_INFORMATION* ptr = pstart;; ptr = (SYSTEM_PROCESS_INFORMATION*) ((uint8_t*) ptr + ptr->NextEntryOffset)) {
assert(ptr->ImageName.Length == 0 || ptr->ImageName.MaximumLength >= ptr->ImageName.Length + 2); // NULL terminated
if (ptr->ImageName.Length == strlen("FancyWM-GUI.exe") * sizeof(wchar_t) &&
ffStrEqualNWS(ptr->ImageName.Buffer, "FancyWM-GUI.exe") &&
isProcessTrusted((DWORD) (uintptr_t) ptr->UniqueProcessId, FF_PROCESS_TYPE_WINDOWS_STORE | FF_PROCESS_TYPE_GUI, filePath, sizeof(buffer))) {
if (instance.config.general.detectVersion && ffGetFileVersion(filePath->Buffer, NULL, pluginName)) {
ffStrbufPrependS(pluginName, "FancyWM ");
} else {
ffStrbufSetStatic(pluginName, "FancyWM");
}
break;
} else if (ptr->ImageName.Length == strlen("glazewm-watcher.exe") * sizeof(wchar_t) &&
ffStrEqualNWS(ptr->ImageName.Buffer, "glazewm-watcher.exe") &&
isProcessTrusted((DWORD) (uintptr_t) ptr->UniqueProcessId, FF_PROCESS_TYPE_SIGNED | FF_PROCESS_TYPE_GUI, filePath, sizeof(buffer))) {
if (instance.config.general.detectVersion && ffGetFileVersion(filePath->Buffer, NULL, pluginName)) {
ffStrbufPrependS(pluginName, "GlazeWM ");
} else {
ffStrbufSetStatic(pluginName, "GlazeWM");
}
break;
} else if (ptr->ImageName.Length == strlen("komorebi.exe") * sizeof(wchar_t) &&
ffStrEqualNWS(ptr->ImageName.Buffer, "komorebi.exe") &&
isProcessTrusted((DWORD) (uintptr_t) ptr->UniqueProcessId, FF_PROCESS_TYPE_CUI, filePath, sizeof(buffer))) {
if (instance.config.general.detectVersion) {
FF_STRBUF_AUTO_DESTROY path = ffStrbufCreateNWS(filePath->Length / sizeof(wchar_t), filePath->Buffer);
if (ffProcessAppendStdOut(pluginName, (char* const[]) {
path.chars,
"--version",
NULL,
}) == NULL) {
ffStrbufSubstrBeforeFirstC(pluginName, '\n');
}
}
if (pluginName->length == 0) {
ffStrbufSetStatic(pluginName, "Komorebi");
}
break;
}
if (ptr->NextEntryOffset == 0) {
break;
}
}
return NULL;
}
const char* ffDetectWMVersion(const FFstrbuf* wmName, FFstrbuf* result, FF_A_UNUSED FFWMOptions* options) {
if (!wmName) {
return "No WM detected";
}
if (ffStrbufEqualS(wmName, "dwm.exe")) {
PWSTR pPath = NULL;
if (SUCCEEDED(SHGetKnownFolderPath(&FOLDERID_System, KF_FLAG_DEFAULT, NULL, &pPath))) {
wchar_t fullPath[MAX_PATH];
wcscpy(fullPath, pPath);
wcscat(fullPath, L"\\dwm.exe");
ffGetFileVersion(fullPath, NULL, result);
}
CoTaskMemFree(pPath);
return NULL;
}
return "Not supported on this platform";
}
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