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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2004 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#import "platform/OSXScreenSaver.h"
#import "platform/OSXScreenSaverUtil.h"
#import "barrier/IPrimaryScreen.h"
#import "base/Log.h"
#import "base/IEventQueue.h"
#import <string.h>
#import <sys/sysctl.h>
// TODO: upgrade deprecated function usage in these functions.
void getProcessSerialNumber(const char* name, ProcessSerialNumber& psn);
bool testProcessName(const char* name, const ProcessSerialNumber& psn);
//
// OSXScreenSaver
//
OSXScreenSaver::OSXScreenSaver(IEventQueue* events, void* eventTarget) :
m_eventTarget(eventTarget),
m_enabled(true),
m_events(events)
{
m_autoReleasePool = screenSaverUtilCreatePool();
m_screenSaverController = screenSaverUtilCreateController();
// install launch/termination event handlers
EventTypeSpec launchEventTypes[2];
launchEventTypes[0].eventClass = kEventClassApplication;
launchEventTypes[0].eventKind = kEventAppLaunched;
launchEventTypes[1].eventClass = kEventClassApplication;
launchEventTypes[1].eventKind = kEventAppTerminated;
EventHandlerUPP launchTerminationEventHandler =
NewEventHandlerUPP(launchTerminationCallback);
InstallApplicationEventHandler(launchTerminationEventHandler, 2,
launchEventTypes, this,
&m_launchTerminationEventHandlerRef);
DisposeEventHandlerUPP(launchTerminationEventHandler);
m_screenSaverPSN.highLongOfPSN = 0;
m_screenSaverPSN.lowLongOfPSN = 0;
if (isActive()) {
getProcessSerialNumber("ScreenSaverEngine", m_screenSaverPSN);
}
}
OSXScreenSaver::~OSXScreenSaver()
{
RemoveEventHandler(m_launchTerminationEventHandlerRef);
// screenSaverUtilReleaseController(m_screenSaverController);
screenSaverUtilReleasePool(m_autoReleasePool);
}
void
OSXScreenSaver::enable()
{
m_enabled = true;
screenSaverUtilEnable(m_screenSaverController);
}
void
OSXScreenSaver::disable()
{
m_enabled = false;
screenSaverUtilDisable(m_screenSaverController);
}
void
OSXScreenSaver::activate()
{
screenSaverUtilActivate(m_screenSaverController);
}
void
OSXScreenSaver::deactivate()
{
screenSaverUtilDeactivate(m_screenSaverController, m_enabled);
}
bool
OSXScreenSaver::isActive() const
{
return (screenSaverUtilIsActive(m_screenSaverController) != 0);
}
void
OSXScreenSaver::processLaunched(ProcessSerialNumber psn)
{
if (testProcessName("ScreenSaverEngine", psn)) {
m_screenSaverPSN = psn;
LOG((CLOG_DEBUG1 "ScreenSaverEngine launched. Enabled=%d", m_enabled));
if (m_enabled) {
m_events->addEvent(
Event(m_events->forIPrimaryScreen().screensaverActivated(),
m_eventTarget));
}
}
}
void
OSXScreenSaver::processTerminated(ProcessSerialNumber psn)
{
if (m_screenSaverPSN.highLongOfPSN == psn.highLongOfPSN &&
m_screenSaverPSN.lowLongOfPSN == psn.lowLongOfPSN) {
LOG((CLOG_DEBUG1 "ScreenSaverEngine terminated. Enabled=%d", m_enabled));
if (m_enabled) {
m_events->addEvent(
Event(m_events->forIPrimaryScreen().screensaverDeactivated(),
m_eventTarget));
}
m_screenSaverPSN.highLongOfPSN = 0;
m_screenSaverPSN.lowLongOfPSN = 0;
}
}
pascal OSStatus
OSXScreenSaver::launchTerminationCallback(
EventHandlerCallRef nextHandler,
EventRef theEvent, void* userData)
{
OSStatus result;
ProcessSerialNumber psn;
EventParamType actualType;
ByteCount actualSize;
result = GetEventParameter(theEvent, kEventParamProcessID,
typeProcessSerialNumber, &actualType,
sizeof(psn), &actualSize, &psn);
if ((result == noErr) &&
(actualSize > 0) &&
(actualType == typeProcessSerialNumber)) {
OSXScreenSaver* screenSaver = (OSXScreenSaver*)userData;
UInt32 eventKind = GetEventKind(theEvent);
if (eventKind == kEventAppLaunched) {
screenSaver->processLaunched(psn);
}
else if (eventKind == kEventAppTerminated) {
screenSaver->processTerminated(psn);
}
}
return (CallNextEventHandler(nextHandler, theEvent));
}
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
void
getProcessSerialNumber(const char* name, ProcessSerialNumber& psn)
{
ProcessInfoRec procInfo;
Str31 procName; // pascal string. first byte holds length.
memset(&procInfo, 0, sizeof(procInfo));
procInfo.processName = procName;
procInfo.processInfoLength = sizeof(ProcessInfoRec);
ProcessSerialNumber checkPsn;
OSErr err = GetNextProcess(&checkPsn);
while (err == 0) {
memset(procName, 0, sizeof(procName));
err = GetProcessInformation(&checkPsn, &procInfo);
if (err != 0) {
break;
}
if (strcmp(name, (const char*)&procName[1]) == 0) {
psn = checkPsn;
break;
}
err = GetNextProcess(&checkPsn);
}
}
bool
testProcessName(const char* name, const ProcessSerialNumber& psn)
{
CFStringRef processName;
OSStatus err = CopyProcessName(&psn, &processName);
return (err == 0 && CFEqual(CFSTR("ScreenSaverEngine"), processName));
}
#pragma GCC diagnostic error "-Wdeprecated-declarations"
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