process.cpp

Linux/Windows 环境下跨平台程序

	// Start the process.
	if (!netmaskProc->start()) {
		qWarning(red + "- Error: " + Settings::IFCONFIG_PATH + ": command not found!" + normal);
		browser->setText(browser->text() + "<font color=red>Error: " + Settings::IFCONFIG_PATH + ": command not found.</font><br>");
		startGwProc();
		return;
	}

	// Mark the current process.
	CURRENT_PROC = NETMASK;	
	
	// When the process is finished, continue with setting the gateway.
	connect(netmaskProc, SIGNAL(processExited()), this, SLOT(startGwProc()) );

	// Establish connections between the process and its error-output.
	connect(netmaskProc, SIGNAL(readyReadStderr()), this, SLOT(netmaskErr()) );
}

// Function that sets the gateway.
void Process::startGwProc()
{
	// Mark that no process is running.
	CURRENT_PROC = NONE;
	
	// Check if we should skip this task.
	if (Profile::profiles.at(current).gw.isEmpty()) {
		startNsProc();
		return;
	}

	// Print that we're about to set the gateway.
	browser->setText(browser->text() + "* Setting gateway: <b>" + Profile::profiles.at(current).gw + "</b><br>");
	qWarning(green + "* Setting gateway: " + GREEN + Profile::profiles.at(current).gw + normal);
	
	// Create and execute the process that sets the gateway.
    gwProc = new QProcess(0, "gwProc");
	gwProc->setArguments(setGw); // Fetch the profile-name from "row".
    
	// Start the process.
	if (!gwProc->start()) {
		qWarning(red + "- Error: " + Settings::IFCONFIG_PATH + ": command not found!" + normal);
		browser->setText(browser->text() + "<font color=red>" + Settings::ROUTE_PATH + ": command not found.</font><br>");
		startNsProc();
		return;
	}
	
	// Mark the current process.
	CURRENT_PROC = GW;
	
	// Continue with the nameservers when the gateway has been set.
	connect(gwProc, SIGNAL(processExited()), this, SLOT(startNsProc()) );

	// Establish connections between the process and its error-output.
	connect(gwProc, SIGNAL(readyReadStderr()), this, SLOT(gwErr()) );
}

// Function that sets the nameserver(s) and the search domain.
void Process::startNsProc()
{
	// Mark that no process is running.
	CURRENT_PROC = NONE;
	
	// Check if we should skip this task.
	if (Profile::profiles.at(current).ns1.isEmpty() && Profile::profiles.at(current).ns2.isEmpty() && Profile::profiles.at(current).search.isEmpty()) {
		startModeProc();
		return;
	}
	
	// Open /etc/resolv.conf
	QFile resolv("/etc/resolv.conf");
	if (!resolv.open(IO_WriteOnly)) {
		qWarning(red + "- Error: Couldn't open /etc/resolv.conf" + normal);
		browser->setText(browser->text() + "<font color=red>Error: Couldn't open /etc/resolv.conf</font><br>");
	}
	else {
		QTextStream write(&resolv);	
	
		// Print what we're doing and write the settings to /etc/resolv.conf
		if (!Profile::profiles.at(current).ns1.isEmpty()) {
			browser->setText(browser->text() + "* Setting nameserver #1: <b>" + Profile::profiles.at(current).ns1 + "</b><br>");
			qWarning(green + "* Setting nameserver #1: " + GREEN + Profile::profiles.at(current).ns1 + normal);
			write << "nameserver " << Profile::profiles.at(current).ns1 << endl;
		}
		if (!Profile::profiles.at(current).ns2.isEmpty()) {
			browser->setText(browser->text() + "* Setting nameserver #2: <b>" + Profile::profiles.at(current).ns2 + "</b><br>");
			qWarning(green + "* Setting nameserver #2: " + GREEN + Profile::profiles.at(current).ns2 + normal);
			write << "nameserver " << Profile::profiles.at(current).ns2 << endl;
		}
		if (!Profile::profiles.at(current).search.isEmpty()) {
			browser->setText(browser->text() + "* Setting search domain: <b>" + Profile::profiles.at(current).search + "</b><br>");
			qWarning(green + "* Setting search domain: " + GREEN + Profile::profiles.at(current).search + normal);
			write << "nameserver " << Profile::profiles.at(current).search << endl;
		}
		resolv.close();
	}
	
	// Continue with bringing down the specified interfaces.
	startModeProc();
}

// Function that sets the wireless mode (ie. managed, ad-hoc).
void Process::startModeProc()
{
	// Mark that no process is running.
	CURRENT_PROC = NONE;
	
	// Check if we should skip this task.
	if (Profile::profiles.at(current).mode == "None") {
		startEssidProc();
		return;
	}

	// Print that we're about to set the wireless-mode.
	browser->setText(browser->text() + "* Setting wireless mode: <b>" + Profile::profiles.at(current).mode + "</b><br>");
	qWarning(green + "* Setting wireless mode: " + GREEN + Profile::profiles.at(current).mode + normal);
	
	// Create and execute the process that sets the wireless-mode.
    modeProc = new QProcess(0, "modeProc");
	modeProc->setArguments(setMode); // Pass the arguments to the process.
    
	// Start the process.
	if (!modeProc->start()) {
    	qWarning(red + "- Error: " + Settings::IWCONFIG_PATH + ": command not found!" + normal);
		browser->setText(browser->text() + "<font color=red>Error: " + Settings::IWCONFIG_PATH + ": command not found.</font><br>");
		startEssidProc();
		return;
	}
	
	// Mark the current process.
	CURRENT_PROC = MODE;
	
	// Continue with the nameservers when the gateway has been set.
	connect(modeProc, SIGNAL(processExited()), this, SLOT(startEssidProc()) );

	// Establish connections between the process and its error-output.
	connect(modeProc, SIGNAL(readyReadStderr()), this, SLOT(modeErr()) );
}

// Function that sets the essid (for wireless networks).
void Process::startEssidProc()
{
	// Mark that no process is running.
	CURRENT_PROC = NONE;
	
	// Check if we should skip this task.
	if (Profile::profiles.at(current).essid.isEmpty()) {
		startKeyProc();
		return;
	}

	// Print that we're about to set the essid.
	browser->setText(browser->text() + "* Setting essid: <b>" + Profile::profiles.at(current).essid + "</b><br>");
	qWarning(green + "* Setting essid: " + GREEN + Profile::profiles.at(current).essid + normal);
	
	// Create and execute the process that sets the essid.
    essidProc = new QProcess(0, "essidProc");
	essidProc->setArguments(setEssid); // Pass the arguments to the process.
    
	// Start the process.
	if (!essidProc->start()) {
    	qWarning(red + "- Error: " + Settings::IWCONFIG_PATH + ": command not found!" + normal);
		browser->setText(browser->text() + "<font color=red>Error: " + Settings::IWCONFIG_PATH + ": command not found.</font><br>");
		startKeyProc();
		return;
	}
	// Mark the current process.
	CURRENT_PROC = ESSID;
	
	// Continue with the nameservers when the gateway has been set.
	connect(essidProc, SIGNAL(processExited()), this, SLOT(startKeyProc()) );

	// Establish connections between the process and its error-output.
	connect(essidProc, SIGNAL(readyReadStderr()), this, SLOT(essidErr()) );
}

// Function that sets the encryption (for wireless networks).
void Process::startKeyProc()
{
	// Mark that no process is running.
	CURRENT_PROC = NONE;
	
	// Check if we should skip this task.
	if (Profile::profiles.at(current).key.isEmpty()) {
		cleanUp();
		return;
	}

	// Print that we're about to set the encrypyion-key.
	browser->setText(browser->text() + "* Setting key: <b>" + Profile::profiles.at(current).key + "</b><br>");
	qWarning(green + "* Setting key: " + GREEN + Profile::profiles.at(current).key + normal);
	
	// Create and execute the process that sets the encryption key.
    keyProc = new QProcess(0, "keyProc");
	keyProc->setArguments(setKey); // Pass the arguments to the process.
    
	// Start the process.
	if (!keyProc->start()) {
    	qWarning(red + "- Error: " + Settings::IWCONFIG_PATH + ": command not found!" + normal);
		browser->setText(browser->text() + "<font color=red>Error: " + Settings::IWCONFIG_PATH + ": command not found.</font><br>");
		cleanUp();
		return;
	}
		
	// Mark the current process.
	CURRENT_PROC = KEY;
	
	// Continue with the nameservers when the gateway has been set.
	connect(keyProc, SIGNAL(processExited()), this, SLOT(cleanUp()) );

	// Establish connections between the process and its error-output.
	connect(keyProc, SIGNAL(readyReadStderr()), this, SLOT(keyErr()) );
}

// Function that prints out the recieved dhcp ip.
void Process::readIp()
{
	QString output, ip;
	int first_pos, bcast_pos; 
			 
	// Save the output in a QString (it's the second line of the output we want).
	output = fetchIpProc->readLineStdout();
	output = fetchIpProc->readLineStdout();
	
	// Parse out the ip-adress.
	first_pos = output.find(":", 0);
	bcast_pos = output.find(" ", first_pos);
	ip = output.mid(first_pos+1, bcast_pos-first_pos-1);
	
	// Finally, show the ip that we've recieved.
	browser->setText(browser->text() + "<font color=#52AA00>- Dhcp-ip recieved: <b>" + ip + "</b></font><br>");
	qWarning(cyan + "- Dhcp-ip recieved: " + CYAN + ip + normal);
}


/*------------------------------------------
       Error-report functions.
------------------------------------------*/

// Prints error messages from the interface down process.
void Process::ifaceDownErr()
{
	// Print the error output to the label.
	QString output = ifaceDownProc->readLineStderr();
	browser->setText(browser->text() + "<font color=red>- Error: " + output + "</font><br>");
	qWarning(red + "- Error: " + output + normal);
} 

// Prints error messages from the kill dhcp process.
void Process::killDhcpErr()
{
	// Read the error output.
	QString output = killDhcpProc->readLineStderr();
	
	// If no dhcpcd proc is running, do not show that particular error msg.
	if (output.find("****  " + Settings::DHCP_CLIENT_PATH + ": not running", 0) != -1)
		return;

	// Print the error output to the label.
	browser->setText(browser->text() + "<font color=red>- Error: " + output + "</font><br>");
	qWarning(red + "- Error: " + output + normal);
}	

// Prints error messages from the dhcp process.
void Process::dhcpErr()
{
	// Handle the error messages different depending on dhpc client.
	if (Settings::DHCP_CLIENT == "dhcpcd") {
		
		// Mark that we've got an error.
		DHCP_ERROR = 1;
		
		// Print the error output to the label.
		QString output = dhcpProc->readLineStderr();
		browser->setText(browser->text() + "<font color=red>- Error: " + output + "</font><br>");
		qWarning(red + "- Error: " + output + normal);
	}
	else if (Settings::DHCP_CLIENT == "dhclient") {
		
		// Loop through all the error output from dhclient.
		while (dhcpProc->canReadLineStderr()) {
			
			QRegExp recievedIp("bound to ((.+)) -- renewal in .+ seconds.$");
			QRegExp noDevice("Bind socket to interface: No such device");
			QRegExp noRecieved("No DHCPOFFERS received.");
			QRegExp noPermission("(SIOCSIFADDR: Permission denied|SIOCSIFFLAGS: Permission denied|Open a socket for LPF: Operation not permitted)");
			QRegExp exited("exiting.$");
			
			// Save each line in output.
			QString output = dhcpProc->readLineStderr();
			
			// Check if the device didn't exist.
			if (noDevice.search(output) != -1) {
				browser->setText(browser->text() + "<font color=red>Error: " + Profile::profiles.at(current).iface + ": No such device.</font><br>");
				qWarning(red + "- Error: " + Profile::profiles.at(current).iface + ": No such device." + normal);
				
				// When we got our error msg, terminate the process.
				dhcpProc->tryTerminate();
				QTimer::singleShot( 1000, dhcpProc, SLOT( kill() ) );
			}
			
			// Check if no dhcp ip was recieved.
			if (noRecieved.search(output) != -1) {
				browser->setText(browser->text() + "<font color=red>Error: No ip recieved.</font><br>");
				qWarning(red + "- Error: No ip recieved." + normal);
				
				// When we got our error msg, terminate the process.
				dhcpProc->tryTerminate();
				QTimer::singleShot( 1000, dhcpProc, SLOT( kill() ) );	
			}
			
			// Check if we got "permission denied".
			if (noPermission.search(output) != -1) {
				browser->setText(browser->text() + "<font color=red>Error: Permission denied.</font><br>");
				qWarning(red + "- Error: Permission denied." + normal);
				
				// When we got our error msg, terminate the process.
				dhcpProc->tryTerminate();
				QTimer::singleShot( 1000, dhcpProc, SLOT( kill() ) );	
			}
			
			// Check if something went wrong and dhclient was exited.
			if (exited.search(output) != -1) {
				browser->setText(browser->text() + "<font color=red>Error: dhclient exited.</font><br>");
				qWarning(red + "- Error: dhclient exited." + normal);
				
				// When we got our error msg, terminate the process.
				dhcpProc->tryTerminate();
				QTimer::singleShot( 1000, dhcpProc, SLOT( kill() ) );	
			}
			
			
			// Check if we have recieved any ip.
			if (recievedIp.search(output) != -1) {
				
				// Try to parse out the recieved ip.
				recievedIp.search(output);
				QString ip = recievedIp.cap(1);
				
				// Print out the ip that we recieved.
				browser->setText(browser->text() + "<font color=#52AA00>- Dhcp-ip recieved: <b>" + ip + "</b></font><br>");
				qWarning(cyan + "- Dhcp-ip recieved: " + CYAN + ip + normal);
			} 
		}
	}
} 

// Prints error messages from the static ip process.
void Process::ipErr()
{
	// Print the error output to the label.
	QString output = ipProc->readLineStderr();
	browser->setText(browser->text() + "<font color=red>- Error: " + output + "</font><br>");
	qWarning(red + "- Error: " + output + normal);
} 

// Prints error messages from the netmask process.
void Process::netmaskErr()
{
	// Print the error output to the label.
	QString output = netmaskProc->readLineStderr();
	browser->setText(browser->text() + "<font color=red>- Error: " + output + "</font><br>");
	qWarning(red + "- Error: " + output + normal);
} 

// Prints error messages from the gateway process.
void Process::gwErr()
{
	// Print the error output to the label.
	QString output = gwProc->readLineStderr();
	browser->setText(browser->text() + " <font color=red>- Error: " + output + "</font><br>");
	qWarning(red + "- Error: " + output + normal);
} 

// Prints error messages from the wireless mode process.
void Process::modeErr()
{
	// Print the error output to the label.
	QString output = modeProc->readLineStderr();
	browser->setText(browser->text() + "<font color=red>- " + output + "</font><br>");
	qWarning(red + "- " + output + normal);
} 

// Prints error messages from the wireless essid process.
void Process::essidErr()
{
	// Print the error output to the label.
	QString output = essidProc->readLineStderr();
	browser->setText(browser->text() + "<font color=red>- " + output + "</font><br>");
	qWarning(red + "- " + output + normal);
} 

// Prints error messages from the wireless key process.
void Process::keyErr()
{
	// Print the error output to the label.
	QString output = keyProc->readLineStderr();
	browser->setText(browser->text() + "<font color=red>- " + output + "</font><br>");
	qWarning(red + "- " + output + normal);
}