mirror of
https://github.com/rustdesk/rustdesk.git
synced 2024-12-16 04:29:05 +08:00
631 lines
19 KiB
C++
631 lines
19 KiB
C++
#include <windows.h>
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#include <wtsapi32.h>
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#include <tlhelp32.h>
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#include <cstdio>
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#include <cstdint>
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#include <intrin.h>
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#include <string>
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#include <memory>
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#include <shlobj.h> // NOLINT(build/include_order)
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#include <userenv.h>
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#include <versionhelpers.h>
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void flog(char const *fmt, ...)
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{
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FILE *h = fopen("C:\\Windows\\temp\\test_rustdesk.log", "at");
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if (!h)
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return;
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va_list arg;
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va_start(arg, fmt);
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vfprintf(h, fmt, arg);
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va_end(arg);
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fclose(h);
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}
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// ultravnc has rdp support
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// https://github.com/veyon/ultravnc/blob/master/winvnc/winvnc/service.cpp
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// https://github.com/TigerVNC/tigervnc/blob/master/win/winvnc/VNCServerService.cxx
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// https://blog.csdn.net/MA540213/article/details/84638264
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DWORD GetLogonPid(DWORD dwSessionId, BOOL as_user)
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{
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DWORD dwLogonPid = 0;
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HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
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if (hSnap != INVALID_HANDLE_VALUE)
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{
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PROCESSENTRY32W procEntry;
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procEntry.dwSize = sizeof procEntry;
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if (Process32FirstW(hSnap, &procEntry))
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do
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{
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DWORD dwLogonSessionId = 0;
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if (_wcsicmp(procEntry.szExeFile, as_user ? L"explorer.exe" : L"winlogon.exe") == 0 &&
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ProcessIdToSessionId(procEntry.th32ProcessID, &dwLogonSessionId) &&
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dwLogonSessionId == dwSessionId)
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{
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dwLogonPid = procEntry.th32ProcessID;
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break;
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}
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} while (Process32NextW(hSnap, &procEntry));
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CloseHandle(hSnap);
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}
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return dwLogonPid;
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}
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// START the app as system
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extern "C"
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{
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// if should try WTSQueryUserToken?
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// https://stackoverflow.com/questions/7285666/example-code-a-service-calls-createprocessasuser-i-want-the-process-to-run-in
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BOOL GetSessionUserTokenWin(OUT LPHANDLE lphUserToken, DWORD dwSessionId, BOOL as_user)
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{
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BOOL bResult = FALSE;
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DWORD Id = GetLogonPid(dwSessionId, as_user);
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if (HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, Id))
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{
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bResult = OpenProcessToken(hProcess, TOKEN_ALL_ACCESS, lphUserToken);
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CloseHandle(hProcess);
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}
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return bResult;
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}
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bool is_windows_server()
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{
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return IsWindowsServer();
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}
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HANDLE LaunchProcessWin(LPCWSTR cmd, DWORD dwSessionId, BOOL as_user)
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{
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HANDLE hProcess = NULL;
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HANDLE hToken = NULL;
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if (GetSessionUserTokenWin(&hToken, dwSessionId, as_user))
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{
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STARTUPINFOW si;
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ZeroMemory(&si, sizeof si);
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si.cb = sizeof si;
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si.dwFlags = STARTF_USESHOWWINDOW;
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wchar_t buf[MAX_PATH];
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wcscpy_s(buf, sizeof(buf), cmd);
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PROCESS_INFORMATION pi;
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LPVOID lpEnvironment = NULL;
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DWORD dwCreationFlags = DETACHED_PROCESS;
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if (as_user)
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{
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CreateEnvironmentBlock(&lpEnvironment, // Environment block
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hToken, // New token
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TRUE); // Inheritance
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}
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if (lpEnvironment)
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{
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dwCreationFlags |= CREATE_UNICODE_ENVIRONMENT;
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}
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if (CreateProcessAsUserW(hToken, NULL, buf, NULL, NULL, FALSE, dwCreationFlags, lpEnvironment, NULL, &si, &pi))
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{
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CloseHandle(pi.hThread);
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hProcess = pi.hProcess;
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}
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CloseHandle(hToken);
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if (lpEnvironment)
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DestroyEnvironmentBlock(lpEnvironment);
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}
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return hProcess;
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}
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// Switch the current thread to the specified desktop
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static bool
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switchToDesktop(HDESK desktop)
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{
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HDESK old_desktop = GetThreadDesktop(GetCurrentThreadId());
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if (!SetThreadDesktop(desktop))
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{
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return false;
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}
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if (!CloseDesktop(old_desktop))
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{
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//
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}
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return true;
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}
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// https://github.com/TigerVNC/tigervnc/blob/8c6c584377feba0e3b99eecb3ef33b28cee318cb/win/rfb_win32/Service.cxx
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// Determine whether the thread's current desktop is the input one
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BOOL
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inputDesktopSelected()
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{
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HDESK current = GetThreadDesktop(GetCurrentThreadId());
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HDESK input = OpenInputDesktop(0, FALSE,
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DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
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DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
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DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
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DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
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if (!input)
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{
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return FALSE;
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}
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DWORD size;
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char currentname[256];
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char inputname[256];
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if (!GetUserObjectInformation(current, UOI_NAME, currentname, sizeof(currentname), &size))
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{
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CloseDesktop(input);
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return FALSE;
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}
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if (!GetUserObjectInformation(input, UOI_NAME, inputname, sizeof(inputname), &size))
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{
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CloseDesktop(input);
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return FALSE;
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}
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CloseDesktop(input);
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// flog("%s %s\n", currentname, inputname);
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return strcmp(currentname, inputname) == 0 ? TRUE : FALSE;
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}
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// Switch the current thread into the input desktop
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bool
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selectInputDesktop()
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{
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// - Open the input desktop
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HDESK desktop = OpenInputDesktop(0, FALSE,
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DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
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DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
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DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
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DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
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if (!desktop)
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{
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return false;
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}
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// - Switch into it
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if (!switchToDesktop(desktop))
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{
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CloseDesktop(desktop);
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return false;
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}
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// ***
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DWORD size = 256;
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char currentname[256];
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if (GetUserObjectInformation(desktop, UOI_NAME, currentname, 256, &size))
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{
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//
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}
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return true;
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}
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int handleMask(uint8_t *rwbuffer, const uint8_t *mask, int width, int height, int bmWidthBytes, int bmHeight)
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{
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auto andMask = mask;
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auto andMaskSize = bmWidthBytes * bmHeight;
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auto offset = height * bmWidthBytes;
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auto xorMask = mask + offset;
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auto xorMaskSize = andMaskSize - offset;
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int doOutline = 0;
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for (int y = 0; y < height; y++)
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{
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for (int x = 0; x < width; x++)
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{
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int byte = y * bmWidthBytes + x / 8;
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int bit = 7 - x % 8;
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if (byte < andMaskSize && !(andMask[byte] & (1 << bit)))
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{
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// Valid pixel, so make it opaque
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rwbuffer[3] = 0xff;
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// Black or white?
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if (xorMask[byte] & (1 << bit))
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rwbuffer[0] = rwbuffer[1] = rwbuffer[2] = 0xff;
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else
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rwbuffer[0] = rwbuffer[1] = rwbuffer[2] = 0;
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}
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else if (byte < xorMaskSize && xorMask[byte] & (1 << bit))
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{
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// Replace any XORed pixels with black, because RFB doesn't support
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// XORing of cursors. XORing is used for the I-beam cursor, which is most
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// often used over a white background, but also sometimes over a black
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// background. We set the XOR'd pixels to black, then draw a white outline
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// around the whole cursor.
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rwbuffer[0] = rwbuffer[1] = rwbuffer[2] = 0;
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rwbuffer[3] = 0xff;
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doOutline = 1;
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}
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else
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{
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// Transparent pixel
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rwbuffer[0] = rwbuffer[1] = rwbuffer[2] = rwbuffer[3] = 0;
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}
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rwbuffer += 4;
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}
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}
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return doOutline;
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}
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void drawOutline(uint8_t *out0, const uint8_t *in0, int width, int height, int out0_size)
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{
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auto in = in0;
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auto out0_end = out0 + out0_size;
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auto offset = width * 4 + 4;
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auto out = out0 + offset;
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for (int y = 0; y < height; y++)
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{
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for (int x = 0; x < width; x++)
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{
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// Visible pixel?
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if (in[3] > 0)
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{
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auto n = 4 * 3;
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auto p = out - (width + 2) * 4 - 4;
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// Outline above...
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if (p >= out0 && p + n <= out0_end)
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memset(p, 0xff, n);
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// ...besides...
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p = out - 4;
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if (p + n <= out0_end)
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memset(p, 0xff, n);
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// ...and above
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p = out + (width + 2) * 4 - 4;
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if (p + n <= out0_end)
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memset(p, 0xff, n);
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}
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in += 4;
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out += 4;
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}
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// outline is slightly larger
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out += 2 * 4;
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}
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// Pass 2, overwrite with actual cursor
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in = in0;
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out = out0 + offset;
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for (int y = 0; y < height; y++)
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{
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for (int x = 0; x < width; x++)
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{
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if (in[3] > 0 && out + 4 <= out0_end)
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memcpy(out, in, 4);
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in += 4;
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out += 4;
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}
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out += 2 * 4;
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}
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}
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int ffi(unsigned v)
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{
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static const int MultiplyDeBruijnBitPosition[32] =
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{
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0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
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31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9};
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return MultiplyDeBruijnBitPosition[((uint32_t)((v & -v) * 0x077CB531U)) >> 27];
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}
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int get_di_bits(uint8_t *out, HDC dc, HBITMAP hbmColor, int width, int height)
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{
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BITMAPV5HEADER bi;
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memset(&bi, 0, sizeof(BITMAPV5HEADER));
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bi.bV5Size = sizeof(BITMAPV5HEADER);
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bi.bV5Width = width;
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bi.bV5Height = -height; // Negative for top-down
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bi.bV5Planes = 1;
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bi.bV5BitCount = 32;
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bi.bV5Compression = BI_BITFIELDS;
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bi.bV5RedMask = 0x000000FF;
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bi.bV5GreenMask = 0x0000FF00;
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bi.bV5BlueMask = 0x00FF0000;
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bi.bV5AlphaMask = 0xFF000000;
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if (!GetDIBits(dc, hbmColor, 0, height,
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out, (LPBITMAPINFO)&bi, DIB_RGB_COLORS))
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return 1;
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// We may not get the RGBA order we want, so shuffle things around
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int ridx, gidx, bidx, aidx;
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ridx = ffi(bi.bV5RedMask) / 8;
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gidx = ffi(bi.bV5GreenMask) / 8;
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bidx = ffi(bi.bV5BlueMask) / 8;
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// Usually not set properly
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aidx = 6 - ridx - gidx - bidx;
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if ((bi.bV5RedMask != ((unsigned)0xff << ridx * 8)) ||
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(bi.bV5GreenMask != ((unsigned)0xff << gidx * 8)) ||
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(bi.bV5BlueMask != ((unsigned)0xff << bidx * 8)))
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return 1;
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auto rwbuffer = out;
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for (int y = 0; y < height; y++)
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{
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for (int x = 0; x < width; x++)
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{
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uint8_t r, g, b, a;
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r = rwbuffer[ridx];
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g = rwbuffer[gidx];
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b = rwbuffer[bidx];
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a = rwbuffer[aidx];
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rwbuffer[0] = r;
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rwbuffer[1] = g;
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rwbuffer[2] = b;
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rwbuffer[3] = a;
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rwbuffer += 4;
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}
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}
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return 0;
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}
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void blank_screen(BOOL set)
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{
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if (set)
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{
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SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM)2);
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}
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else
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{
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SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM)-1);
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}
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}
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void AddRecentDocument(PCWSTR path)
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{
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SHAddToRecentDocs(SHARD_PATHW, path);
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}
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DWORD get_current_session(BOOL include_rdp)
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{
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auto rdp_or_console = WTSGetActiveConsoleSessionId();
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if (!include_rdp)
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return rdp_or_console;
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PWTS_SESSION_INFOA pInfos;
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DWORD count;
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auto rdp = "rdp";
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auto nrdp = strlen(rdp);
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if (WTSEnumerateSessionsA(WTS_CURRENT_SERVER_HANDLE, NULL, 1, &pInfos, &count))
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{
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for (DWORD i = 0; i < count; i++)
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{
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auto info = pInfos[i];
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if (info.State == WTSActive)
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{
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if (info.pWinStationName == NULL)
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continue;
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if (!stricmp(info.pWinStationName, "console"))
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{
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return info.SessionId;
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}
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if (!strnicmp(info.pWinStationName, rdp, nrdp))
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{
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rdp_or_console = info.SessionId;
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}
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}
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}
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WTSFreeMemory(pInfos);
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}
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return rdp_or_console;
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}
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uint32_t get_active_user(PWSTR bufin, uint32_t nin, BOOL rdp)
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{
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uint32_t nout = 0;
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auto id = get_current_session(rdp);
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PWSTR buf = NULL;
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DWORD n = 0;
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if (WTSQuerySessionInformationW(WTS_CURRENT_SERVER_HANDLE, id, WTSUserName, &buf, &n))
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{
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if (buf)
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{
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nout = min(nin, n);
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memcpy(bufin, buf, nout);
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WTSFreeMemory(buf);
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}
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}
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return nout;
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}
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BOOL has_rdp_service()
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{
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PWTS_SESSION_INFOA pInfos;
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DWORD count;
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auto rdp = "rdp";
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auto nrdp = strlen(rdp);
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auto rdp_or_console = WTSGetActiveConsoleSessionId();
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if (WTSEnumerateSessionsA(WTS_CURRENT_SERVER_HANDLE, NULL, 1, &pInfos, &count))
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{
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for (DWORD i = 0; i < count; i++)
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{
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auto info = pInfos[i];
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if (!strnicmp(info.pWinStationName, rdp, nrdp))
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{
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return TRUE;
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}
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}
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WTSFreeMemory(pInfos);
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}
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return FALSE;
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}
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} // end of extern "C"
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// below copied from https://github.com/TigerVNC/tigervnc/blob/master/vncviewer/win32.c
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extern "C"
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{
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static HANDLE thread;
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static DWORD thread_id;
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static HHOOK hook = 0;
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static HWND target_wnd = 0;
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static HWND default_hook_wnd = 0;
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static bool win_down = false;
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static bool stop_system_key_propagate = false;
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bool is_win_down()
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{
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return win_down;
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}
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*a))
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static int is_system_hotkey(int vkCode, WPARAM wParam)
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{
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switch (vkCode)
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{
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case VK_LWIN:
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case VK_RWIN:
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win_down = wParam == WM_KEYDOWN;
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case VK_SNAPSHOT:
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return 1;
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case VK_TAB:
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if (GetAsyncKeyState(VK_MENU) & 0x8000)
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return 1;
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case VK_ESCAPE:
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if (GetAsyncKeyState(VK_MENU) & 0x8000)
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return 1;
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if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
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return 1;
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}
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return 0;
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}
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static LRESULT CALLBACK keyboard_hook(int nCode, WPARAM wParam, LPARAM lParam)
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{
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if (nCode >= 0)
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{
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KBDLLHOOKSTRUCT *msgInfo = (KBDLLHOOKSTRUCT *)lParam;
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// Grabbing everything seems to mess up some keyboard state that
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// FLTK relies on, so just grab the keys that we normally cannot.
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if (stop_system_key_propagate && is_system_hotkey(msgInfo->vkCode, wParam))
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{
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PostMessage(target_wnd, wParam, msgInfo->vkCode,
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(msgInfo->scanCode & 0xff) << 16 |
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(msgInfo->flags & 0xff) << 24);
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return 1;
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}
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}
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return CallNextHookEx(hook, nCode, wParam, lParam);
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}
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static DWORD WINAPI keyboard_thread(LPVOID data)
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{
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MSG msg;
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|
target_wnd = (HWND)data;
|
|
|
|
// Make sure a message queue is created
|
|
PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE | PM_NOYIELD);
|
|
|
|
hook = SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_hook, GetModuleHandle(0), 0);
|
|
// If something goes wrong then there is not much we can do.
|
|
// Just sit around and wait for WM_QUIT...
|
|
|
|
while (GetMessage(&msg, NULL, 0, 0))
|
|
;
|
|
|
|
if (hook)
|
|
UnhookWindowsHookEx(hook);
|
|
|
|
target_wnd = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int win32_enable_lowlevel_keyboard(HWND hwnd)
|
|
{
|
|
if (!default_hook_wnd)
|
|
{
|
|
default_hook_wnd = hwnd;
|
|
}
|
|
if (!hwnd)
|
|
{
|
|
hwnd = default_hook_wnd;
|
|
}
|
|
// Only one target at a time for now
|
|
if (thread != NULL)
|
|
{
|
|
if (hwnd == target_wnd)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
// We create a separate thread as it is crucial that hooks are processed
|
|
// in a timely manner.
|
|
thread = CreateThread(NULL, 0, keyboard_thread, hwnd, 0, &thread_id);
|
|
if (thread == NULL)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void win32_disable_lowlevel_keyboard(HWND hwnd)
|
|
{
|
|
if (!hwnd)
|
|
{
|
|
hwnd = default_hook_wnd;
|
|
}
|
|
if (hwnd != target_wnd)
|
|
return;
|
|
|
|
PostThreadMessage(thread_id, WM_QUIT, 0, 0);
|
|
|
|
CloseHandle(thread);
|
|
thread = NULL;
|
|
}
|
|
|
|
void win_stop_system_key_propagate(bool v)
|
|
{
|
|
stop_system_key_propagate = v;
|
|
}
|
|
|
|
// https://stackoverflow.com/questions/4023586/correct-way-to-find-out-if-a-service-is-running-as-the-system-user
|
|
BOOL is_local_system()
|
|
{
|
|
HANDLE hToken;
|
|
UCHAR bTokenUser[sizeof(TOKEN_USER) + 8 + 4 * SID_MAX_SUB_AUTHORITIES];
|
|
PTOKEN_USER pTokenUser = (PTOKEN_USER)bTokenUser;
|
|
ULONG cbTokenUser;
|
|
SID_IDENTIFIER_AUTHORITY siaNT = SECURITY_NT_AUTHORITY;
|
|
PSID pSystemSid;
|
|
BOOL bSystem;
|
|
|
|
// open process token
|
|
if (!OpenProcessToken(GetCurrentProcess(),
|
|
TOKEN_QUERY,
|
|
&hToken))
|
|
return FALSE;
|
|
|
|
// retrieve user SID
|
|
if (!GetTokenInformation(hToken, TokenUser, pTokenUser,
|
|
sizeof(bTokenUser), &cbTokenUser))
|
|
{
|
|
CloseHandle(hToken);
|
|
return FALSE;
|
|
}
|
|
|
|
CloseHandle(hToken);
|
|
|
|
// allocate LocalSystem well-known SID
|
|
if (!AllocateAndInitializeSid(&siaNT, 1, SECURITY_LOCAL_SYSTEM_RID,
|
|
0, 0, 0, 0, 0, 0, 0, &pSystemSid))
|
|
return FALSE;
|
|
|
|
// compare the user SID from the token with the LocalSystem SID
|
|
bSystem = EqualSid(pTokenUser->User.Sid, pSystemSid);
|
|
|
|
FreeSid(pSystemSid);
|
|
|
|
return bSystem;
|
|
}
|
|
|
|
} // end of extern "C"
|