#include "pcapthread.h"
#include <QDateTime>
#include <QDebug>

CapThread::CapThread(struct pcap *pcap, QObject *parent) : QThread(parent), pcap(pcap) {
    connect(this, &QThread::finished, this, &QThread::deleteLater);
}

void CapThread::run() {
    pcap_pkthdr *header;
    const u_char *data;
    int res;
    while((res = pcap_next_ex(pcap, &header, &data)) >= 0) {
        if(res == 0) continue; //超时
        packet.time = QDateTime::fromSecsSinceEpoch(header->ts.tv_sec).toString("yy-MM-dd HH:mm:ss.")+QString::number(header->ts.tv_usec);
        packet.len = header->len;
        packet.caplen = header->caplen;
        //输出编号、时间戳和包长度
        qDebug()<<packet.time<<" len:"<<header->caplen<<"/"<<header->len;
        QString data_str;
        char line[LINE_LEN + 1];
        int l = 0;
        for(uint i=0; i<header->caplen; i++) {
            data_str.append(QString::asprintf("%.2x ", data[i]));
            if(i > 13) {
                if(isgraph(data[i]) || data[i] == ' ') line[l] = data[i];
                else line[l] = '.';
                if(l==15) {
                    line[16] = '\0';
                    data_str.append("      ");
                    data_str.append(line);
                    data_str.append("\n");
                    memset(line, 0, LINE_LEN);
                    l = 0;
                } else l++;
            } else if(i == 13) {
                data_str.append("\n");
            }
        }
        packet.data = data_str;
        qDebug()<<packet.data.toUtf8().constData();
        emit onMsg();
    }
    qDebug("Error reading the packets: %s\n", pcap_geterr(pcap));
}