#include <sys/stat.h>
#include "mythmiscutil.h"
#include <array>
#include <cerrno>
#include <cstdlib>
#include <ctime>
#include <iostream>
#include <unistd.h>
#include <fcntl.h>
#include <sched.h>
#include "compat.h"
#include <QtGlobal>
#include <QReadWriteLock>
#include <QNetworkProxy>
#include <QStringList>
#include <QDataStream>
#include <QUdpSocket>
#include <QFileInfo>
#include <QFile>
#include <QDir>
#include <QUrl>
#include <QHostAddress>
#include <QRegularExpression>
#include <QRegularExpressionMatchIterator>
#include "mythcorecontext.h"
#include "exitcodes.h"
#include "mythlogging.h"
#include "mythsocket.h"
#include "mythcoreutil.h"
#include "mythsystemlegacy.h"

Include dependency graph for mythmiscutil.cpp:

Functions
bool	getUptime (std::chrono::seconds &uptime)

bool	getMemStats ([[maybe_unused]] int &totalMB, [[maybe_unused]] int &freeMB, [[maybe_unused]] int &totalVM, [[maybe_unused]] int &freeVM)

loadArray	getLoadAvgs (void)
	Returns the system load averages. More...

bool	ping (const QString &host, std::chrono::milliseconds timeout)
	Can we ping host within timeout seconds? More...

bool	telnet (const QString &host, int port)
	Can we talk to port on host? More...

QString	createTempFile (QString name_template, bool dir)

bool	makeFileAccessible (const QString &filename)

QString	getResponse (const QString &query, const QString &def)
	In an interactive shell, prompt the user to input a string. More...

int	intResponse (const QString &query, int def)
	In an interactive shell, prompt the user to input a number. More...

QString	getSymlinkTarget (const QString &start_file, QStringList *intermediaries, unsigned maxLinks)

bool	IsMACAddress (const QString &MAC)

QString	FileHash (const QString &filename)

bool	WakeOnLAN (const QString &MAC)

bool	MythWakeup (const QString &wakeUpCommand, uint flags, std::chrono::seconds timeout)

bool	IsPulseAudioRunning (void)
	Is A/V Sync destruction daemon is running on this host? More...

bool	myth_nice (int val)

void	myth_yield (void)

bool	myth_ioprio (int)
	Allows setting the I/O priority of the current process/thread. More...

bool	MythRemoveDirectory (QDir &aDir)

void	setHttpProxy (void)
	Get network proxy settings from OS, and use for [Q]Http[Comms]. More...

Function Documentation

◆ getUptime()

bool getUptime ( std::chrono::seconds & uptime )

Definition at line 66 of file mythmiscutil.cpp.

Referenced by StatusBox::doMachineStatus(), BaseRequestHandler::HandleQueryUptime(), MainServer::HandleQueryUptime(), and NetworkControl::processQuery().

◆ getMemStats()

bool getMemStats	(	[[maybe_unused] ] int &	totalMB,
		[[maybe_unused] ] int &	freeMB,
		[[maybe_unused] ] int &	totalVM,
		[[maybe_unused] ] int &	freeVM
	)

Definition at line 109 of file mythmiscutil.cpp.

Referenced by StatusBox::doMachineStatus(), BaseRequestHandler::HandleQueryMemStats(), MainServer::HandleQueryMemStats(), and NetworkControl::processQuery().

◆ getLoadAvgs()

getLoadAvgs ( void )

Returns the system load averages.

Returns: A std::array<double,3> containing the system load averages. If the system call fails or is unsupported, returns array containing all -1.

Definition at line 175 of file mythmiscutil.cpp.

Referenced by StatusBox::doMachineStatus(), HttpStatus::FillStatusXML(), V2Status::FillStatusXML(), V2Status::GetBackendStatus(), BaseRequestHandler::HandleQueryLoad(), MainServer::HandleQueryLoad(), and NetworkControl::processQuery().

◆ ping()

bool ping	(	const QString &	host,
		std::chrono::milliseconds	timeout
	)

Can we ping host within timeout seconds?

Different operating systems use different parameters to specify a timeout to the ping command. FreeBSD and derivatives use '-t'; Linux and derivatives use '-w'. Using the right parameter also eliminates the need for the old behavior of falling back to pinging the localhost with and without a timeout, in order to characterize whether the right parameter was used in the first place.

Note: If ping fails to timeout on another supported platform, determine what parameter that platform's ping requires to specify the timeout and add another case to the #ifdef statement.

Definition at line 199 of file mythmiscutil.cpp.

Referenced by setHttpProxy().

◆ telnet()

bool telnet	(	const QString &	host,
		int	port
	)

Can we talk to port on host?

Definition at line 232 of file mythmiscutil.cpp.

Referenced by setHttpProxy().

◆ createTempFile()

QString createTempFile	(	QString	name_template,
		bool	dir
	)

Definition at line 323 of file mythmiscutil.cpp.

Referenced by DBUtil::CreateTemporaryDBConf(), and FillData::GrabData().

◆ makeFileAccessible()

bool makeFileAccessible ( const QString & filename )

Definition at line 395 of file mythmiscutil.cpp.

Referenced by V2Content::GetPreviewImage(), and PreviewGenerator::SavePreview().

◆ getResponse()

QString getResponse	(	const QString &	query,
		const QString &	def
	)

In an interactive shell, prompt the user to input a string.

Definition at line 410 of file mythmiscutil.cpp.

Referenced by intResponse(), ChannelData::promptForChannelUpdates(), MythContext::Impl::PromptForDatabaseParams(), and SchemaUpgradeWizard::PromptForUpgrade().

◆ intResponse()

int intResponse	(	const QString &	query,
		int	def
	)

In an interactive shell, prompt the user to input a number.

Definition at line 440 of file mythmiscutil.cpp.

Referenced by MythContext::Impl::PromptForDatabaseParams().

◆ getSymlinkTarget()

QString getSymlinkTarget	(	const QString &	start_file,
		QStringList *	intermediaries,
		unsigned	maxLinks
	)

Definition at line 451 of file mythmiscutil.cpp.

Referenced by CompleteJob(), anonymous_namespace{mainserver.cpp}::delete_file_immediately(), MainServer::DeleteFile(), ProgramInfo::DiscoverRecordingDirectory(), MythMediaDevice::findMountPath(), MediaMonitor::MediaMonitor(), MythMediaDevice::MythMediaDevice(), and DeleteThread::ProcessNew().

◆ IsMACAddress()

bool IsMACAddress ( const QString & MAC )

Definition at line 503 of file mythmiscutil.cpp.

Referenced by MythWakeup(), and Scheduler::WakeUpSlave().

◆ FileHash()

QString FileHash ( const QString & filename )

Definition at line 548 of file mythmiscutil.cpp.

Referenced by V2Video::AddVideo(), RemoteFile::GetFileHash(), V2Content::GetHash(), FileServerHandler::HandleQueryFileHash(), MainServer::HandleQueryFileHash(), UpdateHashes(), and VideoMetadata::VideoFileHash().

◆ WakeOnLAN()

bool WakeOnLAN ( const QString & MAC )

Definition at line 589 of file mythmiscutil.cpp.

Referenced by MythWakeup(), and Scheduler::WakeUpSlave().

◆ MythWakeup()

bool MythWakeup	(	const QString &	wakeUpCommand,
		uint	flags,
		std::chrono::seconds	timeout
	)

Definition at line 630 of file mythmiscutil.cpp.

Referenced by MythCoreContext::ConnectCommandSocket(), MSqlDatabase::OpenDatabase(), and MythContext::Impl::TestDBconnection().

◆ IsPulseAudioRunning()

bool IsPulseAudioRunning ( void )

Is A/V Sync destruction daemon is running on this host?

Definition at line 638 of file mythmiscutil.cpp.

Referenced by PulseHandler::Suspend().

◆ myth_nice()

bool myth_nice ( int val )

Definition at line 656 of file mythmiscutil.cpp.

Referenced by JobQueue::DoTranscodeThread(), JobQueue::DoUserJobThread(), MythSystemLegacyUnix::Fork(), MythPlayer::InitFrameInterval(), and main().

◆ myth_yield()

void myth_yield ( void )

Definition at line 670 of file mythmiscutil.cpp.

◆ myth_ioprio()

bool myth_ioprio ( int )

Allows setting the I/O priority of the current process/thread.

range -1..8, smaller is higher priority

As of November 14th, 2010 this only works on Linux when using the CFQ I/O Scheduler. The range is -1 to 8, with -1 being real-time priority 0 through 7 being standard best-time priorities and 8 being the idle priority. The deadline and noop I/O Schedulers will ignore this but are much less likely to starve video playback to feed the transcoder or flagger. (noop is only recommended for SSDs.)

Since a process needs to have elevated priviledges to use either the real-time or idle priority this will try priorities 0 or 7 respectively if -1 or 8 do not work. It will not report an error on these conditions as they will be the common case.

Only Linux on i386, ppc, x86_64 and ia64 are currently supported. This is a no-op on all other architectures and platforms.

Definition at line 755 of file mythmiscutil.cpp.

Referenced by JobQueue::DoTranscodeThread(), JobQueue::DoUserJobThread(), MythSystemLegacyUnix::Fork(), and main().

◆ MythRemoveDirectory()

bool MythRemoveDirectory ( QDir & aDir )

Definition at line 759 of file mythmiscutil.cpp.

Referenced by NativeArchive::doNativeArchive(), MythBurn::MythBurn(), MythRemoveDirectory(), MainServer::OpenAndUnlink(), and DeleteThread::ProcessNew().

◆ setHttpProxy()

void setHttpProxy ( void )

Get network proxy settings from OS, and use for [Q]Http[Comms].

The HTTP_PROXY environment var. is parsed for values like; "proxy-host", "proxy-host:8080", "http://host:8080" and "http"//user:password@host:1080", and that is used for any Qt-based Http fetches. We also test connectivity here with ping and telnet, and warn if it fails.

If there is was no env. var, we use Qt to get proxy settings from the OS, and search through them for a proxy server we can connect to.

Definition at line 803 of file mythmiscutil.cpp.

Referenced by main().

Functions