the logic behind the NetworkDiscovery. More...

#include <networkdiscovery.h>

Collaboration diagram for NetworkDiscovery:

Public Slots
void	handleNewConnection ()
void	handleNewInput ()
void	handleNewInputLine (QLocalSocket *client, QString data)
void	handleProcessFinished (int exitCode, QProcess::ExitStatus exitStatus)
void	handleProcessStarted ()
void	handleClientDisconnect ()
void	slotReadyForRun ()
void	checkForIsRunning ()
Signals
void	addInterface (const QString &ifName)
void	changeProgressBarValue (const QString &ifName, const int $newValue)
void	connectionEstablished (QString ifName)
void	abortBoot (QString msg)
void	updateIfStatus (QString ifName, QString status)
void	updateStatus (QString status)
void	allProcessesFinished ()
void	continueBoot (QString ifName)
void	continueBootWithoutCheck (QString ifName)
void	setManualConfInterfaces (QString jsonArr)
void	readyForRun ()
Public Member Functions
	NetworkDiscovery (QObject *parent=0)
	~NetworkDiscovery ()
void	initAndRun (QString serverIp, bool userChoice, bool autoUp, QString pathToLogFile, QString serverPath=DEFAULT_QTSOCKETADDRESS, QString pathToExe=DEFAULT_PATHTODHCPCDEXE, QStringList *args=NULL)
int	ip4_replaceDefaultRoute (QString ifName, QString gateway, int mss)
QString	getGatewayForInterface (QString ifName)
int	ip4_setManualConfiguration (QVariantMap result)
QString	readLogFile ()
void	tryAgain ()
void	prepareTryAgain ()
bool	checkConnectivity (QString ifName)
bool	checkConnectivityViaTcp ()
QVariantMap	getInterfaceConfig (QString ifName)
QString	GetErrorStr ()

Detailed Description

the logic behind the NetworkDiscovery.

This class holds all the logic of the NetworkDiscovery. It's main task is to search for usable interfaces, check if they are wired (in Running state) and start a cdhcpcd process for each interface. It also sends signals to the ndgui class for presenting notifications to the user.

Constructor & Destructor Documentation

NetworkDiscovery::NetworkDiscovery ( QObject * parent = 0 )

constructor

NetworkDiscovery::~NetworkDiscovery ( )

destructor

Member Function Documentation

void NetworkDiscovery::abortBoot ( QString msg ) [signal]

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void NetworkDiscovery::addInterface ( const QString & ifName ) [signal]

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void NetworkDiscovery::allProcessesFinished ( ) [signal]

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void NetworkDiscovery::changeProgressBarValue	(	const QString &	ifName,
		const int $	newValue
	)		`[signal]`

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bool NetworkDiscovery::checkConnectivity ( QString ifName )

checks the connectivity. tries to open a TCP connection to the server (see _serverIp). For this it adjusts the routing table. (sets the gateway of the interface as default gateway) Gateway is written into the dhcpcd config file of this interface. (see DEFAULT_INTERFACE_CONF_LOCATION "/var/tmp/conf_")

Parameters:

ifName name of a interface.

Returns:: true: connection is possible false: connection not possible

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bool NetworkDiscovery::checkConnectivityViaTcp ( )

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void NetworkDiscovery::checkForIsRunning ( ) [slot]

only called if autoUp == true. check the IsRunning flag of each interface in the _ifDownList. connected to the timeout signal of the timer.

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void NetworkDiscovery::connectionEstablished ( QString ifName ) [signal]

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void NetworkDiscovery::continueBoot ( QString ifName ) [signal]

void NetworkDiscovery::continueBootWithoutCheck ( QString ifName ) [signal]

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QString NetworkDiscovery::GetErrorStr ( )

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QString NetworkDiscovery::getGatewayForInterface ( QString ifName )

returns the gateway address, written into the dhcp config file.

Parameters:

ifName name of the interface.

Returns:: gateway address as string. or empty string if no interface config was found.

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QVariantMap NetworkDiscovery::getInterfaceConfig ( QString ifName )

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void NetworkDiscovery::handleClientDisconnect ( ) [slot]

called when a client disconnects.

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void NetworkDiscovery::handleNewConnection ( ) [slot]

connected to the new client arrived signal. connects the client readyRead signal with the handleNewInput slot.

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void NetworkDiscovery::handleNewInput ( ) [slot]

This method is connected to the readyRead Signal of the QLocalSocket client. send an ACK to the client with every received message.

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void NetworkDiscovery::handleNewInputLine	(	QLocalSocket *	client,
		QString	data
	)		`[slot]`

This Method processes the send messages.

This Method processes the send messages. It splits the line into several components. Those components are: interface: interface name ==> indicates the process who send the message s_state: is the number representation of syslog.h LOG levels s_subState: is the number representation of the dhcp.c DHCP states (1 - 8) plus the status. h states (9 - ..) msg: is a message which can contain additional informations

According to the s_state and s_subState we emit the changeProgressBarValue() signal with different values.

Parameters:

client	the client who send the message
data	the message. (format <interfaceName>;<state>;<subState>;<msg> )

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void NetworkDiscovery::handleProcessFinished	(	int	exitCode,
		QProcess::ExitStatus	exitStatus
	)		`[slot]`

This Method is called when a process is finished.

This Method is called when a process is finished. This slot is connected with the signal finished() of the QProcess class. If the process finishes, it will be checked if the process exited normal or if an unexpected error occurred. For this, we determine the sender (which is a QProcess), get the corresponding interface (which is stored in a map), and check the exitCode. Further actions are taken according to the exitCode check. Normal exit: emit changeProgressBar() to 100% emit updateIfStatus() to check connection checkConnectivity()

See also:: NetworkDiscovery::checkConnectivity() Unexpected exit: emit updateIfStatus() to process exited unexpected

Parameters:

exitCode
exitStatus

Returns:: bool returns true: if the interface name i starts with a letter in the blacklist.

returns false: else

See also:: NetworkDiscovery::getListOfNetworkInterfaces()

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void NetworkDiscovery::handleProcessStarted ( ) [slot]

This Method is called when a process is started.

This Method is called when a process is started. It prints the message: "process started for interface: <interfaceName>".

void NetworkDiscovery::initAndRun	(	QString	serverIp,
		bool	userChoice,
		bool	autoUp,
		QString	pathToLogFile,
		QString	serverPath = `DEFAULT_QTSOCKETADDRESS`,
		QString	pathToExe = `DEFAULT_PATHTODHCPCDEXE`,
		QStringList *	args = `NULL`
	)

initialize all important class members and start the main work.

Parameters:

serverIp	the ip of the server with which we are testing the connectivity.
userChoice	true if the user wishes to have a user choice. true: the chooseInterfaceDialog will be showed.
autoUp	true if we want to "auto Up" all down interfaces.
pathToLogFile	the path to the log file.
serverPath	the path to the server socket (default value: DEFAULT_QTSOCKETADDRESS "/var/tmp/qt_c_socket_default")
pathToExe	the path to the customdhcpcd exe. (default value: #define DEFAULT_QTSOCKETADDRESS "/var/tmp/qt_c_socket_default")
args	additional arguments for the customdhcpcd client. (default value: NULL)

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int NetworkDiscovery::ip4_replaceDefaultRoute	(	QString	ifName,
		QString	gateway,
		int	mss
	)

replace the default route. sets af automatically to AF_INET

Parameters:

ifName	interface name
gateway	gateway address
mss	mss value (i think this is the metric. in most cases this value is 0)

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int NetworkDiscovery::ip4_setManualConfiguration ( QVariantMap result )

replace the dhcp configuration with the manual config, entered by the user. if we can not establish a connection with the entered values, reset to the old dhcp values.

Parameters:

result a json object formated string.

Returns:: 0 if everything ok

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void NetworkDiscovery::prepareTryAgain ( )

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QString NetworkDiscovery::readLogFile ( )

reads the log file.

Returns:: the log file as one string.

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void NetworkDiscovery::readyForRun ( ) [signal]

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void NetworkDiscovery::setManualConfInterfaces ( QString jsonArr ) [signal]

void NetworkDiscovery::slotReadyForRun ( ) [slot]

emits the addInterface signal for each interface name in _ifUpList and calls the runDHCPCD method. if the _ifUpList is empty, this method emits an abortBoot signal. connected to the readyForRun signal.

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