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https://github.com/weyne85/rustdesk.git
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source code
This commit is contained in:
rustdesk
366
src/windows.cc
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366
src/windows.cc
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@@ -0,0 +1,366 @@
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#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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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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// 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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// START the app as system
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extern "C"
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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); // Inheritence
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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)
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{
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auto andMask = mask;
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auto xorMask = mask + height * bmWidthBytes;
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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 (!(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 (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)
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{
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auto in = in0;
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auto out = out0 + width * 4 + 4;
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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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// Outline above...
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memset(out - (width + 2) * 4 - 4, 0xff, 4 * 3);
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// ...besides...
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memset(out - 4, 0xff, 4 * 3);
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// ...and above
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memset(out + (width + 2) * 4 - 4, 0xff, 4 * 3);
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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 + width * 4 + 4;
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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)
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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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} // end of extern "C"
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