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Copy pathinput.cpp
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365 lines (313 loc) · 10.7 KB
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#include "precomp.h"
#include "input.h"
#include "dbcs.h"
#include "stream.h"
#include "../terminal/input/terminalInput.hpp"
#include "../interactivity/inc/ServiceLocator.hpp"
#pragma hdrstop
#define KEY_ENHANCED 0x01000000
using Microsoft::Console::Interactivity::ServiceLocator;
bool IsInProcessedInputMode()
{
const auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
return (gci.pInputBuffer->InputMode & ENABLE_PROCESSED_INPUT) != 0;
}
bool IsInVirtualTerminalInputMode()
{
const auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
return WI_IsFlagSet(gci.pInputBuffer->InputMode, ENABLE_VIRTUAL_TERMINAL_INPUT);
}
BOOL IsSystemKey(const WORD wVirtualKeyCode)
{
switch (wVirtualKeyCode)
{
case VK_SHIFT:
case VK_CONTROL:
case VK_MENU:
case VK_PAUSE:
case VK_CAPITAL:
case VK_LWIN:
case VK_RWIN:
case VK_NUMLOCK:
case VK_SCROLL:
return TRUE;
default:
return FALSE;
}
}
ULONG GetControlKeyState(const LPARAM lParam)
{
ULONG ControlKeyState = 0;
if (OneCoreSafeGetKeyState(VK_LMENU) & KEY_PRESSED)
{
ControlKeyState |= LEFT_ALT_PRESSED;
}
if (OneCoreSafeGetKeyState(VK_RMENU) & KEY_PRESSED)
{
ControlKeyState |= RIGHT_ALT_PRESSED;
}
if (OneCoreSafeGetKeyState(VK_LCONTROL) & KEY_PRESSED)
{
ControlKeyState |= LEFT_CTRL_PRESSED;
}
if (OneCoreSafeGetKeyState(VK_RCONTROL) & KEY_PRESSED)
{
ControlKeyState |= RIGHT_CTRL_PRESSED;
}
if (OneCoreSafeGetKeyState(VK_SHIFT) & KEY_PRESSED)
{
ControlKeyState |= SHIFT_PRESSED;
}
if (OneCoreSafeGetKeyState(VK_NUMLOCK) & KEY_TOGGLED)
{
ControlKeyState |= NUMLOCK_ON;
}
if (OneCoreSafeGetKeyState(VK_SCROLL) & KEY_TOGGLED)
{
ControlKeyState |= SCROLLLOCK_ON;
}
if (OneCoreSafeGetKeyState(VK_CAPITAL) & KEY_TOGGLED)
{
ControlKeyState |= CAPSLOCK_ON;
}
if (lParam & KEY_ENHANCED)
{
ControlKeyState |= ENHANCED_KEY;
}
ControlKeyState |= (lParam & ALTNUMPAD_BIT);
return ControlKeyState;
}
// Routine Description:
// - returns true if we're in a mode amenable to us taking over keyboard shortcuts
bool ShouldTakeOverKeyboardShortcuts()
{
const auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
return !gci.GetCtrlKeyShortcutsDisabled() && IsInProcessedInputMode();
}
// Routine Description:
// - handles key events without reference to Win32 elements.
void HandleGenericKeyEvent(INPUT_RECORD event, const bool generateBreak)
{
auto& keyEvent = event.Event.KeyEvent;
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto ContinueProcessing = true;
if (WI_IsAnyFlagSet(keyEvent.dwControlKeyState, CTRL_PRESSED) &&
WI_AreAllFlagsClear(keyEvent.dwControlKeyState, ALT_PRESSED) &&
keyEvent.bKeyDown)
{
// check for ctrl-c, if in line input mode.
if (keyEvent.wVirtualKeyCode == 'C' && IsInProcessedInputMode())
{
HandleCtrlEvent(CTRL_C_EVENT);
if (!gci.HasPendingPopup())
{
gci.pInputBuffer->TerminateRead(WaitTerminationReason::CtrlC);
}
if (!(WI_IsFlagSet(gci.Flags, CONSOLE_SUSPENDED)))
{
ContinueProcessing = false;
}
}
// Check for ctrl-break.
else if (keyEvent.wVirtualKeyCode == VK_CANCEL)
{
gci.pInputBuffer->Flush();
HandleCtrlEvent(CTRL_BREAK_EVENT);
if (!gci.HasPendingPopup())
{
gci.pInputBuffer->TerminateRead(WaitTerminationReason::CtrlBreak);
}
if (!(WI_IsFlagSet(gci.Flags, CONSOLE_SUSPENDED)))
{
ContinueProcessing = false;
}
}
// don't write ctrl-esc to the input buffer
else if (keyEvent.wVirtualKeyCode == VK_ESCAPE)
{
ContinueProcessing = false;
}
}
else if (WI_IsAnyFlagSet(keyEvent.dwControlKeyState, ALT_PRESSED) &&
keyEvent.bKeyDown &&
keyEvent.wVirtualKeyCode == VK_ESCAPE)
{
ContinueProcessing = false;
}
if (ContinueProcessing)
{
gci.pInputBuffer->Write(event);
if (generateBreak)
{
keyEvent.bKeyDown = false;
gci.pInputBuffer->Write(event);
}
if (gci.HasActiveOutputBuffer())
{
auto& buffer = gci.GetActiveOutputBuffer();
if (WI_IsFlagSet(buffer.OutputMode, ENABLE_VIRTUAL_TERMINAL_PROCESSING))
{
buffer.SnapOnInput(keyEvent.wVirtualKeyCode);
}
}
}
}
#ifdef DBG
// set to true with a debugger to temporarily disable focus events getting written to the InputBuffer
volatile bool DisableFocusEvents = false;
#endif
void HandleFocusEvent(const BOOL fSetFocus)
{
#ifdef DBG
if (DisableFocusEvents)
{
return;
}
#endif
const auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
try
{
gci.pInputBuffer->WriteFocusEvent(fSetFocus);
}
catch (...)
{
LOG_HR(wil::ResultFromCaughtException());
}
}
void HandleMenuEvent(const DWORD wParam)
{
const auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
size_t EventsWritten = 0;
try
{
EventsWritten = gci.pInputBuffer->Write(SynthesizeMenuEvent(wParam));
if (EventsWritten != 1)
{
LOG_HR_MSG(E_FAIL, "PutInputInBuffer: EventsWritten != 1, 1 expected");
}
}
catch (...)
{
LOG_HR(wil::ResultFromCaughtException());
}
}
void HandleCtrlEvent(const DWORD EventType)
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
switch (EventType)
{
case CTRL_C_EVENT:
gci.CtrlFlags |= CONSOLE_CTRL_C_FLAG;
break;
case CTRL_BREAK_EVENT:
gci.CtrlFlags |= CONSOLE_CTRL_BREAK_FLAG;
break;
case CTRL_CLOSE_EVENT:
gci.CtrlFlags |= CONSOLE_CTRL_CLOSE_FLAG;
break;
default:
LOG_HR_MSG(E_INVALIDARG, "Invalid EventType: 0x%x", EventType);
}
}
static void CALLBACK midiSkipTimerCallback(HWND, UINT, UINT_PTR idEvent, DWORD) noexcept
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& midiAudio = gci.GetMidiAudio();
KillTimer(nullptr, idEvent);
midiAudio.EndSkip();
}
static void beginMidiSkip() noexcept
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& midiAudio = gci.GetMidiAudio();
midiAudio.BeginSkip();
SetTimer(nullptr, 0, 1000, midiSkipTimerCallback);
}
void ProcessCtrlEvents()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
if (gci.CtrlFlags == 0)
{
gci.UnlockConsole();
return;
}
beginMidiSkip();
// Make our own copy of the console process handle list.
const auto LimitingProcessId = gci.LimitingProcessId;
gci.LimitingProcessId = 0;
std::vector<ConsoleProcessTerminationRecord> termRecords;
const auto hr = gci.ProcessHandleList
.GetTerminationRecordsByGroupId(LimitingProcessId,
WI_IsFlagSet(gci.CtrlFlags,
CONSOLE_CTRL_CLOSE_FLAG),
termRecords);
if (FAILED(hr) || termRecords.empty())
{
gci.UnlockConsole();
return;
}
// Copy ctrl flags.
const auto CtrlFlags = std::exchange(gci.CtrlFlags, 0);
gci.UnlockConsole();
// the ctrl flags could be a combination of the following
// values:
//
// CONSOLE_CTRL_C_FLAG
// CONSOLE_CTRL_BREAK_FLAG
// CONSOLE_CTRL_CLOSE_FLAG
// CONSOLE_CTRL_LOGOFF_FLAG
// CONSOLE_CTRL_SHUTDOWN_FLAG
auto EventType = (DWORD)-1;
switch (CtrlFlags & (CONSOLE_CTRL_CLOSE_FLAG | CONSOLE_CTRL_BREAK_FLAG | CONSOLE_CTRL_C_FLAG | CONSOLE_CTRL_LOGOFF_FLAG | CONSOLE_CTRL_SHUTDOWN_FLAG))
{
case CONSOLE_CTRL_CLOSE_FLAG:
EventType = CTRL_CLOSE_EVENT;
break;
case CONSOLE_CTRL_BREAK_FLAG:
EventType = CTRL_BREAK_EVENT;
break;
case CONSOLE_CTRL_C_FLAG:
EventType = CTRL_C_EVENT;
break;
case CONSOLE_CTRL_LOGOFF_FLAG:
EventType = CTRL_LOGOFF_EVENT;
break;
case CONSOLE_CTRL_SHUTDOWN_FLAG:
EventType = CTRL_SHUTDOWN_EVENT;
break;
default:
return;
}
const auto ctrl = ServiceLocator::LocateConsoleControl();
for (const auto& r : termRecords)
{
// Older versions of Windows would do various things if the EndTask() call failed:
// * XP: Pops up a "Windows can't end this program" dialog for every already-dead process.
// * Vista - Win 7: Simply skips over already-dead processes.
// * Win 8 - Win 11 26100: Aborts on an already-dead process (you have to WM_CLOSE conhost multiple times).
//
// That last period had the following comment:
// Status will be non-successful if a process attached to this console
// vetoes shutdown. In that case, we don't want to try to kill any more
// processes, but we do need to make sure we continue looping so we
// can close any remaining process handles. The exception is if the
// process is inaccessible, such that we can't even open a handle for
// query. In this case, use best effort to send the close event but
// ignore any errors.
//
// The corresponding logic worked like this:
// if (FAILED(EndTask(...)) && r.hProcess) {
// break;
// }
//
// That logic was removed around the Windows 11 26100 time frame, because CSRSS
// (which handles EndTask) now waits 5s and then force-kills the process for us.
// Going back to the Win 7 behavior then should make shutdown a lot more robust.
// The bad news is that EndTask() returns STATUS_UNSUCCESSFUL no matter whether
// the process was already dead, or if the request actually failed for some reason.
// Hopefully there aren't any regressions, but we can't know without trying.
ctrl->EndTask(r.dwProcessID, EventType, CtrlFlags);
}
}