1.几个代码伪装成高级黑客
2.linux下socket 网络编程(客户端向服务器端发送文件) 求源代码 大哥大姐帮帮忙 。源码。源码谢谢
3.linux下socket 网络编程(客户端向服务器端发送文件) 求源代码 大哥大姐帮帮忙 ,源码。。源码谢谢
几个代码伪装成高级黑客
1. Introduction
作为计算机科学领域中最为著名的源码职业之一，黑客在当前的源码底部预警指标源码网络时代中有着不可忽视的作用。高级黑客更是源码其中的佼佼者，他们不仅具备了深厚的源码计算机技术知识，更能够使用各种技术手段，源码无中生有、源码突破困境、源码扰乱秩序等，源码令人望尘莫及。源码本文将会介绍一些简单的源码代码，让大家了解如何通过伪装成高级黑客，源码获得与众不同、且备受他人崇拜的onenet安卓源码感受。
2. 建立IP连接
在Python中，我们可以使用socket库来建立一个IP连接，并实现从目标服务器上获取数据的操作，下面是一段伪装成高级黑客的代码：
```python
import socket
def conn(IP, Port):
client = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
client.connect((IP,Port))
while True:
data = client.recv()
print (\'receive:\', data.decode()) #将获取到的数据进行解码
client.send(\'ACK!\'.encode()) #发送一个确认信息
if __name__ == \'__main__\':
conn(\'.0.0.1\', )
```
通过以上代码，我们可以连接到指定的服务器和对应的端口，获取到服务器发送的数据，并且能够对服务器返回一份确认信息，同时也向别人表现出伪装成高级黑客，android电视应用源码游刃有余的状态。
3. 文件域修改
文件域修改是黑客行业中非常重要的一环，它可以改变一个可编辑文件中特定寻址位置的值。这个方法可以被用来对各种各样的文件（如二进制文件）进行操控。下列的Python代码可以让你的伪装更加漂亮：
```python
import struct
import os
def change_value(file_path, offset, value):
with open(file_path, \"r+b\") as f:
f.seek(offset)
f.write(struct.pack(\'i\', value))
if __name__ == \"__main__\":
file_path = \"/etc/hosts\"
offset =
value =
change_value(file_path, offset, value)
```
以上代码用到了struct结构体和os模块，使用`r+`文件模式打开指定的文件，通过file.seek()方法改变寻址位置，最后使用`struct.pack()`方法打包整数，燕窝朔源码真假并使用write()方法写入文件中。当写入完成后，文件中的值也随之更改。这时，你已成为了一个擅长黑客技术的“高手”。
4. 网络嗅探
网络嗅探是指在一个网络中抓取和记录经过网络的信息，并对这些信息进行分析。在现代网络安全领域中，买盗版源码建站网络嗅探被广泛地应用于网络审计和攻击检测。下面是一个伪装成高级黑客的Python代码示例，可以用于嗅探TCP流量包：
```python
import socket
def sniffTCP(port):
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
sock.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
sock.bind((\'.0.0.1\', port))
while True:
packet = sock.recvfrom()[0]
ip_header = packet[0:]
tcp_header = packet[:]
print(\"TCP Source Port: %d\" % ord(tcp_header[0]))
except KeyboardInterrupt:
print(\'Interrupted.\')
if __name__ == \"__main__\":
sniffTCP()
```
上述程序使用Python的socket库来监听指定的端口，收集包含TCP流量的数据报，并在控制台输出源端口号。此时，你已经成为一个懂得TCP嗅探技术的黑客了。
5. 爬取网页信息
网络爬虫被广泛用于百度和谷歌搜索引擎中，通过分析网页的源代码，检查网站的链接，实现数据抓取和分析。下面是一个伪装成高级黑客的Python代码示例，可以用于网页爬取，我们可以把以前熟悉的requests库和xpath技术结合运用。
```python
import requests
from lxml import html
def get_info(url):
page = requests.get(url)
tree = html.fromstring(page.content)
title = tree.xpath(\'//title\')[0].text_content()
print(\'Website Title:\', title)
links = tree.xpath(\'//a/@href\')
print(\'Links:\')
for link in links:
print(link)
if __name__ == \'__main__\':
get_info(\'tl.h>
#include <sys/wait.h>
#define MAXDATASIZE
#define SERVPORT
#define BACKLOG
int SendFileToServ(const char *path, const char *FileName, const char *ip)
{
#define PORT
int sockfd;
int recvbytes;
char buf[MAXDATASIZE];
char send_str[MAXDATASIZE];
char filepath[] = { 0};
struct sockaddr_in serv_addr;
FILE *fp;
sprintf(filepath, "%s%s", path, FileName);
if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)
{
perror("socket");
return 1;
}
bzero(&serv_addr,sizeof(struct sockaddr_in));
serv_addr.sin_family=AF_INET;
serv_addr.sin_port=htons(PORT);
inet_aton(ip, &serv_addr.sin_addr);
int IErrCount = 0;
again:
if(connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(struct sockaddr))==-1)
{
if (5 == IErrCount)
return 1;
IErrCount++;
perror("connect");
sleep(2);
goto again;
}
//if ((fp = fopen(FileName, "rb")) == NULL)
if ((fp = fopen(filepath, "rb")) == NULL)
{
perror("fopen ");
return 1;
}
recvbytes = write(sockfd, FileName, strlen(FileName));
recvbytes = read(sockfd, buf, MAXDATASIZE);
if (!memcmp(buf, "sendmsg", 7))
{
while(fgets(send_str, MAXDATASIZE, fp))
{
recvbytes = write(sockfd, send_str, strlen(send_str));
recvbytes = read(sockfd, buf, MAXDATASIZE);
if (recvbytes <= 0)
{
fclose(fp);
close(sockfd);
return 1;
}
if (memcmp(buf, "goon", 4))
{
fclose(fp);
close(sockfd);
return 1;
}
}
recvbytes = write(sockfd, "end", 3);
}
else
{
fclose(fp);
close(sockfd);
return 1;
}
memset(buf, 0, MAXDATASIZE);
if (read(sockfd, buf, MAXDATASIZE) <= 0)
{
close(sockfd);
return 2;
}
char *Eptr = "nginx reload error";
//printf("bf[%s]\n", buf);
int ret;
ret = strncmp(buf, Eptr, strlen(Eptr));
//printf("%d\n", ret);
if (!ret)
{
close(sockfd);
return 2;
}
close(sockfd);
return 0;
}
int mysyslog(const char * msg)
{
FILE *fp;
if ((fp = fopen("/tmp/tmp.log", "a+")) == NULL)
{
return 0;
}
fprintf(fp, "[%s]\n", msg);
fclose(fp);
return 0;
}
static void quit_handler(int signal)
{
kill(0, SIGUSR2);
syslog( LOG_NOTICE, "apuserv quit...");
// do something exit thing ,such as close socket ,close mysql,free list
// .....
//i end
exit(0);
}
static int re_conf = 0;
static void reconf_handler(int signal)
{
re_conf=1;
syslog(LOG_NOTICE,"apuserv reload configure file .");
// 请在循环体中判断，如果re_conf == 1，请再次加载配置文件。
}
static int isrunning(void)
{
int fd;
int ret;
struct flock lock;
lock.l_type = F_WRLCK;
lock.l_whence = 0;
lock.l_start = 0;
lock.l_len = 0;
const char *lckfile = "/tmp/apuserv.lock";
fd = open(lckfile,O_WRONLY|O_CREAT);
if (fd < 0) {
syslog(LOG_ERR,"can not create lock file: %s\n",lckfile);
return 1;
}
if ((ret = fcntl(fd,F_SETLK,&lock)) < 0) {
ret = fcntl(fd,F_GETLK,&lock);
if (lock.l_type != F_UNLCK) {
close(fd);
return lock.l_pid;
}
else {
fcntl(fd,F_SETLK,&lock);
}
}
return 0;
}
int MyHandleBuff(const char *buf, char *str, char *FileName, char *pth)
{
sscanf(buf, "%s %s %s", pth, FileName, str);
printf("path=%s\nfilename=%s\nip=%s\n", pth, FileName, str);
return 0;
}
int main(int argc, char **argv)
{
int sockfd,client_fd;
socklen_t sin_size;
struct sockaddr_in my_addr,remote_addr;
char buff[MAXDATASIZE];
int recvbytes;
#if 1
int pid ;
char ch ;
int ret;
int debug = 0;
signal(SIGUSR1, SIG_IGN);
signal(SIGUSR2, SIG_IGN);
signal(SIGHUP, SIG_IGN);
signal(SIGTERM, quit_handler);
syslog(LOG_NOTICE,"apuserver start....");
while ((ch = getopt(argc, argv, "dhV")) != -1) {
switch (ch) {
case 'd':
debug = 1;
break;
case 'V':
printf("Version:%s\n","1.0.0");
return 0;
case 'h':
printf(" -d use daemon mode\n");
printf(" -V show version\n");
return 0;
default:
printf(" -d use daemon mode\n");
printf(" -V show version\n");
}
}
if (debug && daemon(0,0 ) ) {
return -1;
}
if (isrunning()) {
fprintf(stderr, "apuserv is already running\n");
syslog(LOG_INFO,"apuserv is already running\n");
exit(0);
}
while (1) {
pid = fork();
if (pid < 0)
return -1;
if (pid == 0)
break;
while ((ret = waitpid(pid, NULL, 0)) != pid) {
syslog(LOG_NOTICE, "waitpid want %d, but got %d", pid, ret);
if (ret < 0)
syslog(LOG_NOTICE, "waitpid errno:%d", errno);
}
kill(0, SIGUSR2);
sleep(1);
syslog(LOG_NOTICE,"restart apuserver");
}
signal(SIGHUP, reconf_handler);
signal(SIGPIPE, SIG_IGN);
signal(SIGUSR1,SIG_IGN);
signal(SIGUSR2, SIG_DFL);
signal(SIGTERM, SIG_DFL);
#endif
if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)
{
perror("socket");
exit(1);
}
bzero(&my_addr,sizeof(struct sockaddr_in));
my_addr.sin_family=AF_INET;
my_addr.sin_port=htons(SERVPORT);
my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(sockfd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))==-1)
{
perror("bind");
exit(1);
}
if(listen(sockfd,BACKLOG)==-1)
{
perror("listen");
exit(1);
}
int nret;
while(1)
{
sin_size = sizeof(struct sockaddr_in);
if((client_fd = accept(sockfd, (struct sockaddr *)&remote_addr, &sin_size))==-1)
{
perror("falied accept");
continue;
}
memset(buff, 0, MAXDATASIZE);
recvbytes = read(client_fd, buff, MAXDATASIZE);
char str[] = { 0};
char FileName[] = { 0};
char path[] = { 0};
MyHandleBuff(buff, str, FileName, path);
if (recvbytes > 0)
{
nret = SendFileToServ(path, FileName, str);
printf("nret[%d]\n", nret);
if (1 == nret)
write(client_fd, "send file error", );
else if(2 == nret)
write(client_fd, "reload nginx error", );
else
write(client_fd, "succ", 4);
}
close(client_fd);
}
}
_________________________________________________
client:
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <syslog.h>
#include <sys/time.h>
#include <string.h>
#include <fcntl.h>
#include <sys/wait.h>
#define MAXDATASIZE
#define SERVPORT
#define BACKLOG
int mysyslog(const char * msg)
{
FILE *fp;
if ((fp = fopen("/tmp/tmp.log", "a+")) == NULL)
{
return 0;
}
fprintf(fp, "[%s]\n", msg);
fclose(fp);
return 0;
}
static void quit_handler(int signal)
{
kill(0, SIGUSR2);
syslog( LOG_NOTICE, "apuserv quit...");
// do something exit thing ,such as close socket ,close mysql,free list
// .....
//i end
exit(0);
}
static int re_conf = 0;
static void reconf_handler(int signal)
{
re_conf=1;
syslog(LOG_NOTICE,"apuserv reload configure file .");
// ·1nf == 1￡′μ?
static int isrunning(void)
{
int fd;
int ret;
struct flock lock;
lock.l_type = F_WRLCK;
lock.l_whence = 0;
lock.l_start = 0;
lock.l_len = 0;
const char *lckfile = "/tmp/dstserver.lock";
fd = open(lckfile,O_WRONLY|O_CREAT);
if (fd < 0) {
syslog(LOG_ERR,"can not create lock file: %s\n",lckfile);
return 1;
}
if ((ret = fcntl(fd,F_SETLK,&lock)) < 0) {
ret = fcntl(fd,F_GETLK,&lock);
if (lock.l_type != F_UNLCK) {
close(fd);
return lock.l_pid;
}
else {
fcntl(fd,F_SETLK,&lock);
}
}
return 0;
}
int main(int argc, char **argv)
{
int sockfd,client_fd;
socklen_t sin_size;
struct sockaddr_in my_addr,remote_addr;
char buff[MAXDATASIZE];
int recvbytes;
#if 1
int pid ;
char ch ;
int ret;
int debug = 0;
signal(SIGUSR1, SIG_IGN);
signal(SIGUSR2, SIG_IGN);
signal(SIGHUP, SIG_IGN);
signal(SIGTERM, quit_handler);
syslog(LOG_NOTICE,"dstserver start....");
while ((ch = getopt(argc, argv, "dhV")) != -1) {
switch (ch) {
case 'd':
debug = 1;
break;
case 'V':
printf("Version:%s\n","1.0.0");
return 0;
case 'h':
printf(" -d use daemon mode\n");
printf(" -V show version\n");
return 0;
default:
printf(" -d use daemon mode\n");
printf(" -V show version\n");
}
}
if (debug && daemon(0,0 ) ) {
return -1;
}
if (isrunning()) {
fprintf(stderr, "dstserver is already running\n");
syslog(LOG_INFO,"dstserver is already running\n");
exit(0);
}
while (1) {
pid = fork();
if (pid < 0)
return -1;
if (pid == 0)
break;
while ((ret = waitpid(pid, NULL, 0)) != pid) {
syslog(LOG_NOTICE, "waitpid want %d, but got %d", pid, ret);
if (ret < 0)
syslog(LOG_NOTICE, "waitpid errno:%d", errno);
}
kill(0, SIGUSR2);
sleep(1);
syslog(LOG_NOTICE,"restart apuserver");
}
signal(SIGHUP, reconf_handler);
signal(SIGPIPE, SIG_IGN);
signal(SIGUSR1,SIG_IGN);
signal(SIGUSR2, SIG_DFL);
signal(SIGTERM, SIG_DFL);
#endif
if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)
{
perror("socket");
exit(1);
}
bzero(&my_addr,sizeof(struct sockaddr_in));
my_addr.sin_family=AF_INET;
my_addr.sin_port=htons(SERVPORT);
my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(sockfd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))==-1)
{
perror("bind");
exit(1);
}
if(listen(sockfd,BACKLOG)==-1)
{
perror("listen");
exit(1);
}
char filepath[MAXDATASIZE]= { 0};
FILE *fp;
while(1)
{
sin_size = sizeof(struct sockaddr_in);
if((client_fd = accept(sockfd, (struct sockaddr *)&remote_addr, &sin_size))==-1)
{
perror("falied accept");
continue;
}
memset(buff, 0, MAXDATASIZE);
recvbytes = read(client_fd, buff, MAXDATASIZE);
sprintf(filepath, "/etc/nginx/url_rule/%s", buff);
if ((fp = fopen(filepath, "wb")) == NULL)
{
perror("fopen");
close(client_fd);
continue;
}
write(client_fd, "sendmsg", 7);
while(read(client_fd, buff, MAXDATASIZE))
{
if (!memcmp(buff, "end", 3))
{
fclose(fp);
break;
}
else
{
fprintf(fp, "%s", buff);
write(client_fd, "goon", 4);
}
}
//system("nginx -s reload");
char *Sptr = "nginx reload succ";
char *Eptr = "nginx reload error";
int ret;
ret = system("nginx -s reload");
printf("ret[%d]\n", ret);
if (ret != 0)
{
write(client_fd, Eptr, strlen(Eptr));
}
else
{
write(client_fd, Sptr, strlen(Sptr));
}
close(client_fd);
}
}
以前写的：内容忘记了。不是很复杂你可以自己看！
linux下socket 网络编程(客户端向服务器端发送文件) 求源代码 大哥大姐帮帮忙 ,。。谢谢
源代码奉上，流程图。。。这个太简单了，你自己看看。。。。。。。
//TCP
//服务器端程序
#include< stdio.h >
#include< stdlib.h >
#include< windows.h >
#include< winsock.h >
#include< string.h >
#pragma comment( lib, "ws2_.lib" )
#define PORT
#define BACKLOG
#define TRUE 1
void main( void )
{
int iServerSock;
int iClientSock;
char *buf = "hello, world!\n";
struct sockaddr_in ServerAddr;
struct sockaddr_in ClientAddr;
int sin_size;
WSADATA WSAData;
if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) )//初始化
{
printf( "initializationing error!\n" );
WSACleanup( );
exit( 0 );
}
if( ( iServerSock = socket( AF_INET, SOCK_STREAM, 0 ) ) == INVALID_SOCKET )
{
printf( "创建套接字失败!\n" );
WSACleanup( );
exit( 0 );
}
ServerAddr.sin_family = AF_INET;
ServerAddr.sin_port = htons( PORT );//监视的端口号
ServerAddr.sin_addr.s_addr = INADDR_ANY;//本地IP
memset( & ( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );
if( bind( iServerSock, ( struct sockaddr * )&ServerAddr, sizeof( struct sockaddr ) ) == -1 )
{
printf( "bind调用失败!\n" );
WSACleanup( );
exit( 0 );
}
if( listen( iServerSock, BACKLOG ) == -1 )
{
printf( "listen调用失败!\n" );
WSACleanup( );
exit( 0 );
}
while( TRUE )
{
sin_size = sizeof( struct sockaddr_in );
iClientSock = accept( iServerSock, ( struct sockaddr * )&ClientAddr, &sin_size );
if( iClientSock == -1 )
{
printf( "accept调用失败!\n" );
WSACleanup( );
exit( 0 );
}
printf( "服务器连接到%s\n", inet_ntoa( ClientAddr.sin_addr ) );
if( send( iClientSock, buf, strlen( buf ), 0 ) == -1 )
{
printf( "send调用失败!" );
closesocket( iClientSock );
WSACleanup( );
exit( 0 );
}
}
}
/////客户端程序
#include< stdio.h >
#include< stdlib.h >
#include< windows.h >
#include< winsock.h >
#include< string.h >
#pragma comment( lib, "ws2_.lib" )
#define PORT
#define BACKLOG
#define TRUE 1
#define MAXDATASIZE
void main( void )
{
int iClientSock;
char buf[ MAXDATASIZE ];
struct sockaddr_in ServerAddr;
int numbytes;
// struct hostent *he;
WSADATA WSAData;
// int sin_size;
/* if( ( he = gethostbyname( "liuys" ) ) == NULL )
{
printf( "gethostbyname调用失败!" );
WSACleanup( );
exit( 0 );
}
*/
if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) )//初始化
{
printf( "initializationing error!\n" );
WSACleanup( );
exit( 0 );
}
if( ( iClientSock = socket( AF_INET, SOCK_STREAM, 0 ) ) == INVALID_SOCKET )
{
printf( "创建套接字失败!\n" );
WSACleanup( );
exit( 0 );
}
ServerAddr.sin_family = AF_INET;
ServerAddr.sin_port = htons( PORT );
// ServerAddr.sin_addr = *( ( struct in_addr * )he->h_addr );
ServerAddr.sin_addr.s_addr = inet_addr( "..2." );//记得换IP
memset( &( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );
if( connect( iClientSock, ( struct sockaddr * ) & ServerAddr, sizeof( struct sockaddr ) ) == -1 )
{
printf( "connect失败!" );
WSACleanup( );
exit( 0 );
}
numbytes = recv( iClientSock, buf, MAXDATASIZE, 0 );
if( numbytes == -1 )
{
printf( "recv失败!" );
WSACleanup( );
exit( 0 );
}
buf[ numbytes ] = '\0';
printf( "Received: %s", buf );
closesocket( iClientSock );
WSACleanup( );
}
/////UDP
//服务器
#include< stdio.h >
#include< string.h >
#include< winsock.h >
#include< windows.h >
#pragma comment( lib, "ws2_.lib" )
#define PORT
#define BACKLOG
#define TRUE 1
#define MAXDATASIZE
void main( void )
{
int iServerSock;
// int iClientSock;
int addr_len;
int numbytes;
char buf[ MAXDATASIZE ];
struct sockaddr_in ServerAddr;
struct sockaddr_in ClientAddr;
WSADATA WSAData;
if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) )
{
printf( "initializationing error!\n" );
WSACleanup( );
exit( 0 );
}
iServerSock = socket( AF_INET, SOCK_DGRAM, 0 );
if( iServerSock == INVALID_SOCKET )
{
printf( "创建套接字失败!\n" );
WSACleanup( );
exit( 0 );
}
ServerAddr.sin_family = AF_INET;
ServerAddr.sin_port = htons( PORT );//监视的端口号
ServerAddr.sin_addr.s_addr = INADDR_ANY;//本地IP
memset( & ( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );
if( bind( iServerSock, ( struct sockaddr * )&ServerAddr, sizeof( struct sockaddr ) ) == -1 )
{
printf( "bind调用失败!\n" );
WSACleanup( );
exit( 0 );
}
addr_len = sizeof( struct sockaddr );
numbytes = recvfrom( iServerSock, buf, MAXDATASIZE, 0, ( struct sockaddr * ) & ClientAddr, &addr_len );
if( numbytes == -1 )
{
printf( "recvfrom调用失败!\n" );
WSACleanup( );
exit( 0 );
}
printf( "got packet from %s\n", inet_ntoa( ClientAddr.sin_addr ) );
printf( "packet is %d bytes long\n", numbytes );
buf[ numbytes ] = '\0';
printf( "packet contains \"%s\"\n", buf );
closesocket( iServerSock );
WSACleanup( );
}
//客户端
#include< stdio.h >
#include< stdlib.h >
#include< windows.h >
#include< winsock.h >
#include< string.h >
#pragma comment( lib, "ws2_.lib" )
#define PORT
#define MAXDATASIZE
void main( void )
{
int iClientSock;
struct sockaddr_in ServerAddr;
int numbytes;
char buf[ MAXDATASIZE ] = { 0 };
WSADATA WSAData;
if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) )
{
printf( "initializationing error!\n" );
WSACleanup( );
exit( 0 );
}
if( ( iClientSock = socket( AF_INET, SOCK_DGRAM, 0 ) ) == -1 )
{
printf( "创建套接字失败!\n" );
WSACleanup( );
exit( 0 );
}
ServerAddr.sin_family = AF_INET;
ServerAddr.sin_port = htons( PORT );
ServerAddr.sin_addr.s_addr = inet_addr( "..2." );//记得换IP
memset( &( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );
numbytes = sendto( iClientSock, buf, strlen( buf ), 0, ( struct sockaddr * ) & ServerAddr, sizeof( struct sockaddr ) );
if( numbytes == -1 )
{
printf( "sendto调用失败!\n" );
WSACleanup( );
exit( 0 );
}
printf( "sent %d bytes to %s\n", numbytes, inet_ntoa( ServerAddr.sin_addr ) );
closesocket( iClientSock );
WSACleanup( );
}
