网络抓包与发包程序设计(二)

一、

1、如何查看源IP地址

打开cmd

ipconfig/all

2、源MAC地址

设置中打开有线网络，查看物理地址

3、目的MAC地址

apr -a

局域网同一子网段内直接发包、以及给服务器发包，目的MAC的选择，要理解清楚，服务器是在其它的网段，那么目的MAC应该是发送者所在网段的网关MAC，网关为192.168.181.254，因此MAC地址为58-69-6c-c9-bd-a2。

二、完整代码

ConfigDialog.java

package chapter11;

import java.awt.Desktop;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.control.CheckBox;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Hyperlink;
import javafx.scene.control.Label;
import javafx.scene.control.Separator;
import javafx.scene.control.TextField;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Modality;
import javafx.stage.Stage;
import jpcap.JpcapCaptor;
import jpcap.NetworkInterface;

public class ConfigDialog {
    private JpcapCaptor jpcapCaptor;
    private String keyData;
    private NetworkInterface[] devices = JpcapCaptor.getDeviceList();
    private Stage stage = new Stage();
    private TextField tfKeywords = new TextField();

    public ConfigDialog(Stage parentStage) {
        this.stage.initOwner(parentStage);
        this.stage.initModality(Modality.WINDOW_MODAL);
        this.stage.setResizable(false);
        this.stage.setTitle("选择网卡并设置参数");
        VBox vBox = new VBox();
        vBox.setAlignment(Pos.CENTER_LEFT);
        vBox.setSpacing(10.0D);
        vBox.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        ComboBox<String> comboBox = new ComboBox();
        comboBox.setMaxWidth(800.0D);

        for(int i = 0; i < this.devices.length; ++i) {
            comboBox.getItems().add(i + " :  " + this.devices[i].description);
        }

        comboBox.getSelectionModel().selectFirst();
        TextField tfFilter = new TextField();
        TextField tfSize = new TextField("1514");
        CheckBox checkBox = new CheckBox("是否设置为混杂模式");
        checkBox.setSelected(true);
        HBox hBoxBottom = new HBox();
        hBoxBottom.setAlignment(Pos.CENTER_RIGHT);
        Button btnConfirm = new Button("确定");
        Button btnCancel = new Button("取消");
        hBoxBottom.getChildren().addAll(new Node[]{btnConfirm, btnCancel});
        Hyperlink link = new Hyperlink("设置抓包过滤器（例如 ip and tcp）：");
        String url = "https://cosy.univ-reims.fr/~lsteffenel/cours/Master1/Reseaux/0910/captureFilters.htm";
        link.setOnAction((event) -> {
            try {
                Desktop.getDesktop().browse(new URI(url));
            } catch (URISyntaxException | IOException var3) {
                var3.printStackTrace();
            }

        });
        vBox.getChildren().addAll(new Node[]{new Label("请选择网卡："), comboBox, link, tfFilter, new Label("包中数据包含的关键字，匹配则显示数据内容（多个关键字为or关系，用空格隔开）"), this.tfKeywords, new Label("设置抓包大小（建议介于68~1514之间）："), tfSize, checkBox, new Separator(), hBoxBottom});
        Scene scene = new Scene(vBox);
        this.stage.setScene(scene);
        btnConfirm.setOnAction((event) -> {
            try {
                int index = comboBox.getSelectionModel().getSelectedIndex();
                NetworkInterface networkInterface = this.devices[index];
                int snapLen = Integer.parseInt(tfSize.getText().trim());
                boolean promisc = checkBox.isSelected();
                this.jpcapCaptor = JpcapCaptor.openDevice(networkInterface, snapLen, promisc, 20);
                this.jpcapCaptor.setFilter(tfFilter.getText().trim(), true);
                this.keyData = this.tfKeywords.getText();
                this.stage.hide();
            } catch (Exception var10) {
                (new Alert(Alert.AlertType.ERROR, var10.getMessage(), new ButtonType[0])).showAndWait();
            }

        });
        btnCancel.setOnAction((event) -> {
            this.stage.hide();
        });
    }

    public JpcapCaptor getJpcapCaptor() {
        return this.jpcapCaptor;
    }

    public String getKeyData() {
        return this.keyData;
    }

    public void showAndWait() {
        this.stage.showAndWait();
    }
}

PacketCaptureFX.java

package chapter11;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import jpcap.JpcapCaptor;
import jpcap.PacketReceiver;
import jpcap.packet.Packet;

public class PacketCaptureFX extends Application {
    private TextArea taDisplay = new TextArea();
    private Button btnStart = new Button("开始抓包");
    private Button btnStop = new Button("停止抓包");
    private Button btnClear = new Button("清空");
    private Button btnSetting = new Button("设置");
    private Button btnExit = new Button("退出");
    private ConfigDialog configDialog;
    private JpcapCaptor jpcapCaptor;
    private String keyData;

    public PacketCaptureFX() {
    }

    public static void main(String[] args) {
        launch(args);
    }

    public void start(Stage primaryStage) throws Exception {
        BorderPane mainPane = new BorderPane();
        VBox display = new VBox();
        display.setSpacing(10.0D);
        display.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        this.taDisplay.setWrapText(true);
        this.taDisplay.setEditable(false);
        this.taDisplay.setPrefHeight(250.0D);
        display.getChildren().addAll(new Node[]{new Label("抓包信息："), this.taDisplay});
        VBox.setVgrow(this.taDisplay, Priority.ALWAYS);
        mainPane.setCenter(display);
        this.btnSetting.setOnAction((event) -> {
            if (this.configDialog == null) {
                this.configDialog = new ConfigDialog(primaryStage);
            }

            this.configDialog.showAndWait();
            this.jpcapCaptor = this.configDialog.getJpcapCaptor();
            this.keyData = this.configDialog.getKeyData();
        });
        this.btnStart.setOnAction((event) -> {
            if (this.jpcapCaptor == null) {
                if (this.configDialog == null) {
                    this.configDialog = new ConfigDialog(primaryStage);
                }

                this.configDialog.showAndWait();
                this.jpcapCaptor = this.configDialog.getJpcapCaptor();
                this.keyData = this.configDialog.getKeyData();
            }

            this.interrupt("captureThread");
            (new Thread(() -> {
                while(!Thread.currentThread().isInterrupted()) {
                    this.jpcapCaptor.processPacket(1, new PacketCaptureFX.PacketHandler());
                }

            }, "captureThread")).start();
        });
        this.btnStop.setOnAction((event) -> {
            this.interrupt("captureThread");
        });
        this.btnClear.setOnAction((event) -> {
            this.taDisplay.clear();
        });
        this.btnExit.setOnAction((event) -> {
            this.exit();
        });
        HBox buttons = new HBox();
        buttons.setAlignment(Pos.CENTER);
        buttons.setSpacing(10.0D);
        buttons.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        buttons.getChildren().addAll(new Node[]{this.btnStart, this.btnStop, this.btnClear, this.btnSetting, this.btnExit});
        mainPane.setBottom(buttons);
        Scene scene = new Scene(mainPane, 700.0D, 400.0D);
        primaryStage.setOnCloseRequest((event) -> {
            this.exit();
        });
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    private void interrupt(String threadName) {
        ThreadGroup currentGroup = Thread.currentThread().getThreadGroup();
        int noThreads = currentGroup.activeCount();
        Thread[] lstThreads = new Thread[noThreads];
        currentGroup.enumerate(lstThreads);

        for(int i = 0; i < noThreads; ++i) {
            if (lstThreads[i].getName().equals(threadName)) {
                lstThreads[i].interrupt();
            }
        }

    }

    private void exit() {
        this.interrupt("captureThread");
        System.exit(0);
    }

    class PacketHandler implements PacketReceiver {
        PacketHandler() {
        }

        public void receivePacket(Packet packet) {
            Platform.runLater(() -> {
                PacketCaptureFX.this.taDisplay.appendText(packet.toString() + "\n");
            });
            System.out.println(PacketCaptureFX.this.keyData);
            if (PacketCaptureFX.this.keyData != null && !PacketCaptureFX.this.keyData.trim().equalsIgnoreCase("")) {
                try {
                    String[] keyList = PacketCaptureFX.this.keyData.split(" ");
                    String msg = new String(packet.data, 0, packet.data.length, "utf-8");
                    String[] var4 = keyList;
                    int var5 = keyList.length;

                    for(int var6 = 0; var6 < var5; ++var6) {
                        String key = var4[var6];
                        if (msg.toUpperCase().contains(key.toUpperCase())) {
                            Platform.runLater(() -> {
                                PacketCaptureFX.this.taDisplay.appendText("数据部分：" + msg + "\n\n");
                            });
                            break;
                        }
                    }
                } catch (Exception var8) {
                    System.err.println(var8.getMessage());
                }

            }
        }
    }
}

PacketSender.java

package chapter11;

import java.net.InetAddress;
import jpcap.JpcapSender;
import jpcap.packet.EthernetPacket;
import jpcap.packet.TCPPacket;

public class PacketSender {
    public PacketSender() {
    }

    public static void sendTCPPacket(JpcapSender sender, int srcPort, int dstPort, String srcHost, String dstHost, String data, String srcMAC, String dstMAC, boolean syn, boolean ack, boolean rst, boolean fin) {
        try {
            TCPPacket tcp = new TCPPacket(srcPort, dstPort, 56L, 78L, false, ack, false, rst, syn, fin, true, true, 200, 10);
            tcp.setIPv4Parameter(0, false, false, false, 0, false, false, false, 0, 1010101, 100, 6, InetAddress.getByName(srcHost), InetAddress.getByName(dstHost));
            tcp.data = data.getBytes("UTF-8");
            EthernetPacket ethernetPacket = new EthernetPacket();
            ethernetPacket.frametype = 2048;
            tcp.datalink = ethernetPacket;
            ethernetPacket.src_mac = convertMacFormat(srcMAC);
            ethernetPacket.dst_mac = convertMacFormat(dstMAC);
            if (ethernetPacket.src_mac != null && ethernetPacket.dst_mac != null) {
                sender.sendPacket(tcp);
                System.out.println("发包成功！");
            } else {
                throw new Exception("MAC地址输入错误");
            }
        } catch (Exception var14) {
            System.err.println(var14.getMessage());
            throw new RuntimeException(var14);
        }
    }

    public static byte[] convertMacFormat(String MAC) {
        String[] macs = new String[6];
        if (MAC.contains("-")) {
            macs = doSplit(MAC, "-");
        } else {
            if (!MAC.contains(":")) {
                return null;
            }

            macs = doSplit(MAC, ":");
        }

        byte[] result = new byte[6];

        for(int i = 0; i < macs.length; ++i) {
            result[i] = (byte)Integer.parseInt(macs[i], 16);
        }

        return result;
    }

    private static String[] doSplit(String MAC, String splitter) {
        return MAC.split(splitter);
    }
}

SendPacketFX.java

package chapter11;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.control.CheckBox;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import jpcap.JpcapSender;

public class SendPacketFX extends Application {
    private CheckBox cbSYN = new CheckBox("SYN");
    private CheckBox cbACK = new CheckBox("ACK");
    private CheckBox cbRST = new CheckBox("RST");
    private CheckBox cbFIN = new CheckBox("FIN");
    private TextField tfSrcPort = new TextField();
    private TextField tfDstPort = new TextField();
    private TextField tfSrcHost = new TextField();
    private TextField tfDstHost = new TextField();
    private TextField tfSrcMAC = new TextField();
    private TextField tfDstMAC = new TextField();
    private TextField tfData = new TextField();
    private Button btnSend = new Button("发送TCP包");
    private Button btnSetting = new Button("选择网卡");
    private Button btnExit = new Button("退出");
    private NetworkChoiceDialog dialog;
    private JpcapSender sender;

    public SendPacketFX() {
    }

    public static void main(String[] args) {
        launch(args);
    }

    public void start(Stage primaryStage) throws Exception {
        BorderPane mainPain = new BorderPane();
        HBox ports = new HBox();
        ports.setSpacing(10.0D);
        ports.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        ports.getChildren().addAll(new Node[]{new Label("源端口："), this.tfSrcPort, new Label("目的端口："), this.tfDstPort});
        mainPain.setTop(ports);
        HBox tags = new HBox();
        tags.setSpacing(10.0D);
        tags.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        tags.getChildren().addAll(new Node[]{new Label("TCP标识位"), this.cbSYN, this.cbACK, this.cbRST, this.cbFIN});
        VBox params = new VBox();
        params.setSpacing(10.0D);
        params.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        params.getChildren().addAll(new Node[]{tags, new Label("源主机地址"), this.tfSrcHost, new Label("目的主机地址"), this.tfDstHost, new Label("源MAC地址"), this.tfSrcMAC, new Label("目的MAC地址"), this.tfDstMAC, new Label("发送的数据"), this.tfData});
        mainPain.setCenter(params);
        HBox buttons = new HBox();
        buttons.setAlignment(Pos.CENTER);
        buttons.setSpacing(10.0D);
        buttons.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        buttons.getChildren().addAll(new Node[]{this.btnSend, this.btnSetting, this.btnExit});
        mainPain.setBottom(buttons);
        this.btnSend.setOnAction((event) -> {
            try {
                int srcPort = Integer.parseInt(this.tfSrcPort.getText().trim());
                int dstPort = Integer.parseInt(this.tfDstPort.getText().trim());
                String srcHost = this.tfSrcHost.getText().trim();
                String dstHost = this.tfDstHost.getText().trim();
                String srcMAC = this.tfSrcMAC.getText().trim();
                String dstMAC = this.tfDstMAC.getText().trim();
                String data = this.tfData.getText();
                PacketSender.sendTCPPacket(this.sender, srcPort, dstPort, srcHost, dstHost, data, srcMAC, dstMAC, this.cbSYN.isSelected(), this.cbACK.isSelected(), this.cbRST.isSelected(), this.cbFIN.isSelected());
                (new Alert(AlertType.INFORMATION, "已发送！", new ButtonType[0])).showAndWait();
            } catch (Exception var9) {
                (new Alert(AlertType.ERROR, var9.getMessage(), new ButtonType[0])).showAndWait();
            }

        });
        this.btnSetting.setOnAction((event) -> {
            if (this.dialog == null) {
                this.dialog = new NetworkChoiceDialog(primaryStage);
            }

            this.dialog.showAndWait();
            this.sender = this.dialog.getSender();
        });
        this.btnExit.setOnAction((event) -> {
            this.exit();
        });
        Scene scene = new Scene(mainPain);
        primaryStage.setScene(scene);
        primaryStage.setTitle("发送自构包");
        primaryStage.setWidth(500.0D);
        this.dialog = new NetworkChoiceDialog(primaryStage);
        this.dialog.showAndWait();
        this.sender = this.dialog.getSender();
        primaryStage.show();
        primaryStage.setOnCloseRequest((event) -> {
            this.exit();
        });
    }

    private void exit() {
        System.exit(0);
    }
}

NetworkChoiceDialog.java

package chapter11;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.Separator;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Modality;
import javafx.stage.Stage;
import jpcap.JpcapCaptor;
import jpcap.JpcapSender;
import jpcap.NetworkInterface;

public class NetworkChoiceDialog {
    private JpcapSender sender;
    private NetworkInterface[] devices = JpcapCaptor.getDeviceList();
    private Stage stage = new Stage();

    public NetworkChoiceDialog(Stage parentStage) {
        this.stage.initOwner(parentStage);
        this.stage.initModality(Modality.WINDOW_MODAL);
        this.stage.setResizable(false);
        this.stage.setTitle("选择网卡");
        VBox vBox = new VBox();
        vBox.setAlignment(Pos.CENTER_LEFT);
        vBox.setSpacing(10.0D);
        vBox.setPadding(new Insets(10.0D, 20.0D, 10.0D, 20.0D));
        ComboBox<String> comboBox = new ComboBox();
        comboBox.setMaxWidth(800.0D);

        for(int i = 0; i < this.devices.length; ++i) {
            comboBox.getItems().add(i + " :  " + this.devices[i].description);
        }

        comboBox.getSelectionModel().selectFirst();
        HBox hBoxBottom = new HBox();
        hBoxBottom.setAlignment(Pos.CENTER_RIGHT);
        Button btnConfirm = new Button("确定");
        hBoxBottom.getChildren().addAll(new Node[]{btnConfirm});
        vBox.getChildren().addAll(new Node[]{new Label("请选择网卡："), comboBox, new Separator(), hBoxBottom});
        Scene scene = new Scene(vBox);
        this.stage.setScene(scene);
        btnConfirm.setOnAction((event) -> {
            try {
                int index = comboBox.getSelectionModel().getSelectedIndex();
                NetworkInterface networkInterface = this.devices[index];
                this.sender = JpcapSender.openDevice(networkInterface);
                this.stage.hide();
            } catch (Exception var5) {
                (new Alert(AlertType.ERROR, var5.getMessage(), new ButtonType[0])).showAndWait();
            }

        });
    }

    public JpcapSender getSender() {
        return this.sender;
    }

    public void showAndWait() {
        this.stage.showAndWait();
    }
}

三、运行