#include "mythmiscutil.h"
#include <iostream>
#include <cerrno>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sched.h>
#include "compat.h"
#include <QReadWriteLock>
#include <QNetworkProxy>
#include <QStringList>
#include <QDataStream>
#include <QUdpSocket>
#include <QFileInfo>
#include <QFile>
#include <QDir>
#include <QUrl>
#include <QHostAddress>
#include "mythcorecontext.h"
#include "exitcodes.h"
#include "mythlogging.h"
#include "mythsocket.h"
#include "mythcoreutil.h"
#include "mythsystemlegacy.h"
#include "mythconfig.h"

Include dependency graph for mythmiscutil.cpp:

Functions
bool	getUptime (time_t &uptime)
	Returns uptime statistics. More...

bool	getMemStats (int &totalMB, int &freeMB, int &totalVM, int &freeVM)
	Returns memory statistics in megabytes. More...

bool	hasUtf8 (const char *str)
	Guess whether a string is UTF-8. More...

bool	ping (const QString &host, int timeout)
	Can we ping host within timeout seconds? More...

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

long long	copy (QFile &dst, QFile &src, uint block_size)
	Copies src file to dst file. More...

QString	createTempFile (QString name_template, bool dir)

bool	makeFileAccessible (QString filename)
	Makes a file accessible to all frontends/backends. More...

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 (QString MAC)

QString	FileHash (QString filename)

bool	WakeOnLAN (QString MAC)

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...

void	wrapList (QStringList &list, int width)

QString	xml_indent (uint level)

int	naturalCompare (const QString &_a, const QString &_b, Qt::CaseSensitivity caseSensitivity)

Function Documentation

◆ getUptime()

getUptime ( time_t & uptime )

Returns uptime statistics.

Returns: true if successful, false otherwise.

Definition at line 65 of file mythmiscutil.cpp.

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

◆ getMemStats()

getMemStats	(	int &	totalMB,
		int &	freeMB,
		int &	totalVM,
		int &	freeVM
	)

Returns memory statistics in megabytes.

Todo:: Memory Statistics are not supported (by MythTV) on NT or DOS.

Returns: true if it succeeds, false otherwise.

Definition at line 112 of file mythmiscutil.cpp.

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

◆ hasUtf8()

bool hasUtf8 ( const char * str )

Guess whether a string is UTF-8.

Note: This does not attempt to validate the whole string. It just checks if it has any UTF-8 sequences in it.

Definition at line 184 of file mythmiscutil.cpp.

◆ ping()

bool ping	(	const QString &	host,
		int	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 236 of file mythmiscutil.cpp.

Referenced by CardUtil::IsVBoxPresent(), and setHttpProxy().

◆ telnet()

bool telnet	(	const QString &	host,
		int	port
	)

Can we talk to port on host?

Definition at line 271 of file mythmiscutil.cpp.

Referenced by setHttpProxy().

◆ copy()

copy	(	QFile &	dst,
		QFile &	src,
		uint	block_size
	)

Copies src file to dst file.

If the dst file is open, it must be open for writing. If the src file is open, if must be open for reading.

The files will be in the same open or close state after this function runs as they were prior to this function being called.

This function does not care if the files are actual files. For compatibility with pipes and socket streams the file location will not be reset to 0 at the end of this function. If the function is successful the file pointers will be at the end of the copied data.

Parameters

dst	Destination QFile
src	Source QFile
block_size	Optional block size in bytes, must be at least 1024, otherwise the default of 16 KB will be used.

Returns: bytes copied on success, -1 on failure.

Definition at line 302 of file mythmiscutil.cpp.

Referenced by GalleryThumbView::Copy(), ImportMusicDialog::copyFile(), VideoOutput::CopyFrame(), mythburn::copyRemote(), mythburn::doProcessFile(), mythburn::doProcessFileProjectX(), VideoVisualGoom::Draw(), PrivateDecoderOMX::GetBufferedFrame(), mythburn::getFileInformation(), PrivateDecoderCrystalHD::GetFrame(), nv_python_libs.common.common_api.Common::getUrlData(), HLSStream::HLSStream(), ImportRecorder::Open(), mythburn::preProcessFile(), MythImage::Reflect(), trail_space(), nv_python_libs.xsltfunctions.traileraddicts_api.xpathFunctions::traileraddictsLinkGenerationMovie(), and ThumbFinder::updateThumb().

◆ createTempFile()

QString createTempFile	(	QString	name_template,
		bool	dir
	)

Definition at line 359 of file mythmiscutil.cpp.

Referenced by Playlist::CreateCDMP3(), DataDirectProcessor::CreateTemp(), DBUtil::CreateTemporaryDBConf(), and FillData::GrabData().

◆ makeFileAccessible()

makeFileAccessible ( QString filename )

Makes a file accessible to all frontends/backends.

This function abstracts the functionality of making a file accessible to all frontends and backends. Currently it contains a permissions hack that makes a file accessible even on a system with an improperly configured environment (umask/group) where the frontend and backend are being run as different users or where a NFS share is used but UID's/GID's differ on different hosts.

Though the function currently only changes the file mode to 0666, by abstracting the functionality, it will be easier to make changes in the future if a better approach is chosen. Similarly, using this function allows the hack to be applied only when required if code is written to detect or allow the user to specify their system is misconfigured.

Parameters

filename Path of file to make accessible

Definition at line 431 of file mythmiscutil.cpp.

Referenced by Content::GetPreviewImage(), DataDirectProcessor::SaveLineupToCache(), 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 446 of file mythmiscutil.cpp.

Referenced by intResponse(), ChannelData::promptForChannelUpdates(), MythContextPrivate::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 476 of file mythmiscutil.cpp.

Referenced by MythContextPrivate::PromptForDatabaseParams().

◆ getSymlinkTarget()

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

Definition at line 487 of file mythmiscutil.cpp.

Referenced by CompleteJob(), MainServer::DeleteFile(), ProgramInfo::DiscoverRecordingDirectory(), MythMediaDevice::findMountPath(), MediaMonitor::MediaMonitor(), MythMediaDevice::MythMediaDevice(), and DeleteThread::ProcessNew().

◆ IsMACAddress()

bool IsMACAddress ( QString MAC )

Definition at line 542 of file mythmiscutil.cpp.

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

◆ FileHash()

QString FileHash ( QString filename )

Definition at line 589 of file mythmiscutil.cpp.

Referenced by Video::AddVideo(), RemoteFile::GetFileHash(), Content::GetHash(), FileServerHandler::HandleQueryFileHash(), MainServer::HandleQueryFileHash(), UpdateHashes(), VideoMetadata::VideoFileHash(), and xml_bool_to_string().

◆ WakeOnLAN()

bool WakeOnLAN ( QString MAC )

Definition at line 630 of file mythmiscutil.cpp.

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

◆ IsPulseAudioRunning()

bool IsPulseAudioRunning ( void )

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

Definition at line 670 of file mythmiscutil.cpp.

Referenced by AudioOutput::OpenAudio(), PulseHandler::Suspend(), and xml_bool_to_string().

◆ myth_nice()

bool myth_nice ( int val )

Definition at line 688 of file mythmiscutil.cpp.

Referenced by JobQueue::DoTranscodeThread(), JobQueue::DoUserJobThread(), MythSystemLegacyUnix::Fork(), MythPlayer::InitAVSync(), main(), NuppelVideoRecorder::run(), and xml_bool_to_string().

◆ myth_yield()

void myth_yield ( void )

Definition at line 702 of file mythmiscutil.cpp.

Referenced by xml_bool_to_string().

◆ 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 790 of file mythmiscutil.cpp.

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

◆ MythRemoveDirectory()

bool MythRemoveDirectory ( QDir & aDir )

Definition at line 794 of file mythmiscutil.cpp.

Referenced by NativeArchive::doNativeArchive(), MythBurn::MythBurn(), MythRemoveDirectory(), and xml_bool_to_string().

◆ 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 838 of file mythmiscutil.cpp.

Referenced by main(), and xml_bool_to_string().

◆ wrapList()

void wrapList	(	QStringList &	list,
		int	width
	)

Definition at line 940 of file mythmiscutil.cpp.

Referenced by CommandLineArg::GetHelpString(), and CommandLineArg::GetLongHelpString().

◆ xml_indent()

QString xml_indent ( uint level )

Definition at line 988 of file mythmiscutil.cpp.

◆ naturalCompare()

int naturalCompare	(	const QString &	_a,
		const QString &	_b,
		Qt::CaseSensitivity	caseSensitivity
	)

Definition at line 1014 of file mythmiscutil.cpp.

Referenced by EditMetadataDialog::Create(), lt_callsign(), lt_smart(), VideoFilterSettings::meta_less_than(), operator<(), SingleValueImp::sort(), metadata_path_sort::sort(), and xml_bool_to_string().