ApplicationLauncher/example/AppTest/SetNetworkInterface.qml

import QtQuick 2.5
import ApplicationLauncher 1.0


Item {
    property string mode: "static"
    property string ifacename: "eth0"
    property string address: "192.168.0.125"
    property string netmask: "255.255.255.0"
    property string gateway: "192.168.0.10"
    property string nameserver: "192.168.0.10"
    property string infile: "/etc/network/interfaces"
    property string outfile: "/etc/network/interfaces"


    function doSetInterface() {
        setInterface.interfaceMode = "Set";
        setInterface.launchScript();
    }

    function doGetInterface() {
        setInterface.interfaceMode = "Get";
        setInterface.launchScript();
    }

    function doRestartNetwork() {
        worker.appName = "/etc/init.d/S40network";
        worker.arguments = "restart";
        worker.launchScript();
    }

    Application{
        id: worker
        onAppFinished: {
            console.log("WorkerDone");
        }

        onAppStarted: {
            console.debug("WorkerappStarted :");
        }

        onAppError: {
            console.debug("WorkerappError : " + exitError + " appStatus : " + exitStatus + " appCode " + exitCode );
        }

    }

    Application {
        id: writeInterfaces
        outFName: outfile
        onAppFinished: {
            console.log("IfaceDone");
        }

        onAppStarted: {
            console.debug("IFACEappStarted :");
        }

        onAppError: {
            console.debug("IFACEappError : " + exitError + " appStatus : " + exitStatus + " appCode " + exitCode );
        }
    }

    Application {
        property string interfaceMode:""

        id: setInterface
        appName: "cat"
        arguments: infile

        onAppFinished: {
            console.debug("AppFinished :");
            console.debug("appError : " + exitError + " appStatus : " + exitStatus + " appCode " + exitCode );
            console.debug("stdERR :" + stdERR);
            console.debug("stdOUT :" + stdOUT);
            console.debug("======================================");

            var lines = stdOUT.split(/[\r\n]+/g);
            var idx = 0;
            var iface = [];
            var inIface = 0;

            lines.forEach(function(entry) {
                if (entry.length > 0) {

                    if(entry.charAt(0) === '#'){
                        //console.log(idx + ":: " + "=======>:" + JSON.stringify(entry));
                    } else {
                        if (entry.indexOf("iface") !== -1){ //Interface Entry start
                            var ifaceEntry = entry.split(" ");
                            if ((ifaceEntry.length >=2) && (ifaceEntry[1] === "eth0")) {
                                iface.push({index: idx, txt: entry});
                                inIface = 1;
                            } else {
                                inIface = 0;
                            }
                        } else {
                            if(inIface === 1) {
                                iface.push({index: idx, txt: entry});
                            }
                        }
                    }
                }
                ++idx;
            });

            var interfaceCMD = interfaceMode;

            if (interfaceCMD === "Get"){ // Auslesen der aktuellen Einstellungen
                console.log(">>>>>>>>>:: " + JSON.stringify(interfaceCMD));
                mode = "";
                address = "";
                netmask = "";
                nameserver = "";
                gateway = "";

                if (iface[0].txt.indexOf("dhcp") !== -1) {
                    mode = "dhcp";
                }
                if (iface[0].txt.indexOf("static") !== -1) {
                    mode = "static";

                    var i;
                    var wdata;
                    for ( i = 1; i < iface.length; i++) {
                        if ( iface[i].txt.indexOf("address") !== -1) {
                            wdata = iface[i].txt.split(" ");
                            address = wdata[1];
                        }

                        if ( iface[i].txt.indexOf("netmask") !== -1) {
                            wdata = iface[i].txt.split(" ");
                            netmask = wdata[1];
                        }

                        if ( iface[i].txt.indexOf("gateway") !== -1) {
                            wdata = iface[i].txt.split(" ");
                            gateway = wdata[1];
                        }

                        if ( iface[i].txt.indexOf("nameserver") !== -1) {
                            wdata = iface[i].txt.split(" ");
                            wdata[3] = wdata[3].replace(/\'/g, '').replace(/\"/g, '');
                            nameserver = wdata[3];
                        }
                    }
                }
            }

            if (interfaceCMD === "Set") { // Setzen der Gewälten Einstellungen
                console.log(">>>>>>>>>:: " + JSON.stringify(interfaceCMD));
                lines.splice(iface[0].index, iface[iface.length - 1].index - iface[0].index + 1);

                var insertIdx = iface[0].index;
                var insertText;
                if(mode === "static") {
                    insertText = "iface " + ifacename + " inet " + mode;
                    lines.splice(insertIdx, 0, insertText);
                    ++insertIdx;
                    insertText = "\taddress " + address;
                    lines.splice(insertIdx, 0, insertText);
                    ++insertIdx;
                    insertText = "\tnetmask " + netmask;
                    lines.splice(insertIdx, 0, insertText);
                    ++insertIdx;
                    insertText = "\tgateway " + gateway;
                    lines.splice(insertIdx, 0, insertText);
                    ++insertIdx;

                    //Broadcast Adresse ausrechnen
                    var wrkAddr = address.split(".");
                    var ipAddress = new Uint8Array(4);
                    var i;

                    for (i = 0; i< 4; i++) {
                        ipAddress[i] = wrkAddr[i];
                    }

                    wrkAddr = netmask.split(".");
                    var ipMask = new Uint8Array(4);
                    for (i = 0; i< 4; i++) {
                        ipMask[i] = wrkAddr[i];
                    }

                    var broadcastUINT = new Uint8Array(4);

                    for (i = 0; i< 4; i++) {
                        broadcastUINT[i] = ipAddress[i] | (~ipMask[i]);
                    }

                    var broadcast = broadcastUINT[0] +"." +
                            broadcastUINT[1] +"." + broadcastUINT[2] +"." +
                            broadcastUINT[3];

                    insertText = "\tbroadcast " + broadcast;
                    lines.splice(insertIdx, 0, insertText);
                    ++insertIdx;

                    insertText = "\tpost-up echo " + "'nameserver "  + nameserver + "' > /etc/resolv.conf";
                    lines.splice(insertIdx, 0, insertText);
                } else if (mode === "dhcp") {
                    insertText = "iface " + ifacename + " inet " + mode;
                    lines.splice(insertIdx, 0, insertText);
                    ++insertIdx;
                }

                var cmd = "echo -e " + "\"";
                lines.forEach(function(entry){
                    cmd = cmd + entry + "\\n"
                    //console.log(JSON.stringify(entry));
                });

                cmd = cmd + "\"";
                writeInterfaces.appName = cmd;
                writeInterfaces.launchScript();
            }

            console.log(">> mode     :: " + JSON.stringify(mode));
            console.log(">> address     :: " + JSON.stringify(address));
            console.log(">> netmask     :: " + JSON.stringify(netmask));
            console.log(">> gateway     :: " + JSON.stringify(gateway));
            console.log(">> nameserver     :: " + JSON.stringify(nameserver));

        }

        onAppStarted: {
            console.debug("appStarted :");
            console.debug("appError : " + exitError + " appStatus : " + exitStatus + " appCode " + exitCode );
        }

        onAppError: {
            console.debug("appError : " + exitError + " appStatus : " + exitStatus + " appCode " + exitCode );
        }
    }

}