0x0syscall ScanPort

///////////////////////////////////////projet : 0x0ScanPort //Author : 0x0syscall//         HaKSyN Security TeaM//Date : 01/05/2008/////////////////////////////////////#include "stdio.h"#include "unistd.h"#include "stdlib.h"#include "netdb.h"#include "sys/types.h"#include "sys/socket.h"#include "netinet/in.h"#define MAX_PORT 65535char syntax(){        printf("\n=>Scan port by 0x0syscall\n");	printf("-------------------------\n");	printf("=>Syntax : <file> <host> <port_start_scan> <port_end_scan>\n\n");	return 0;}char port(){	printf("\nERREUR\n");	printf("------\n");	printf("Le port doit être inferieur à 65535\n");	printf("et le port de debut doit être inférieur au port de fin.\n\n");	return 0;}int main(int argc, char **argv[]){	if (argc < 4)		{		syntax();	  	return 0;		}		int start;	int end;	start = atoi(argv[2]);	end   = atoi(argv[3]);			if(end > MAX_PORT)		{		port();		return 0;		}	if(start > end)		{		port();		return 0;		}						int prt;			int mysocket;			int mysocket2;			int srv_connect;			int sockaddr_long;				struct sockaddr_in sockaddr_mysocket;        		sockaddr_long = sizeof(sockaddr_mysocket);				sockaddr_mysocket.sin_family = PF_INET;				sockaddr_mysocket.sin_addr.s_addr = inet_addr(argv[1]);								FILE *fp;				fp=fopen(argv[1], "a");                                printf("\nPORT    STATUS \n");                                printf("-----------------\n");				                                               				for(prt=start;prt<=end;prt++)					{						sockaddr_mysocket.sin_port = htons(prt);						mysocket2 = socket(PF_INET, SOCK_STREAM, 0);						if(mysocket2 == -1)						perror("");										srv_connect = connect(mysocket2, (struct sockaddr*)&sockaddr_mysocket, sockaddr_long);												if (srv_connect != -1)							{							printf("%d	Ouvert	\n", prt);			    	   		    	fprintf(fp, "Port %d ouvert\n", prt);						   	}						close(fp);						close(mysocket2);					}			printf("\n");	close(mysocket);	return 0;}