本节内容:
远程copy与执行命令
本节分享的例子,实现思想如下:
远程copy文件以及在远程服务器中执行命令时,使用ssh2模块,所有的操作依据ssh2连接句柄完成。
1. SSH2模块的安装
1.1 安装需要的扩展包
复制代码 代码示例:
wget http://www.libssh2.org/download/libssh2-1.4.2.tar.gz
tar zxf libssh2-1.4.2.tar.gz
cd libssh2-1.4.2
./configure && make && make install
wget http://pecl.php.net/get/ssh2-0.11.3.tgz
cd ssh2-0.11.3
phpize (如果报错命令没有找到,apt-get install php5-dev)
./configure —with-ssh2 && make && make install
1.2 修改php配置信息
cd /etc/php5/cgi
vim php.ini
添加项:
extension=/usr/lib/php5/20090626/ssh2.so
ssh2.so是编译ssh2时得到的模块,上面是模块的位置。
cd /etc/php5/cli
vim php.ini
添加项:
extension=/usr/lib/php5/20090626/ssh2.so
ssh2.so是编译ssh2时得到的模块,上面是模块的位置。
1.3 重启web服务器
复制代码 代码示例:
/etc/init.d/lighttpd restart
1.4 查看是否加载了ssh2
复制代码 代码示例:
[root@localhost ~]php -m | grep ssh2
ssh2
2. SSH2模块的连接应用
SSH2连接有两种方式,分别是用户名密码,ssh密钥形式。
2.1 用户名与密码
复制代码 代码示例:
$connection = ssh2_connect("192.168.6.222",22);
if (ssh2_auth_password($connection,"veno","ubuntu"))
{
echo "Authentication Successful! ";
}else{
die("Authentication Failed...");
}
2.2 ssh密钥
复制代码 代码示例:
$connection = ssh2_connect('192.168.6.222', 22, array('hostkey'=>'ssh-rsa'));
if (ssh2_auth_pubkey_file($connection, 'root',
'/root/.ssh/id_rsa.pub',
'/root/.ssh/id_rsa'))
{
echo "Public Key Authentication Successfuln";
} else {
echo ('Public Key Authentication Failed');
}
密钥生成:
在服务器192.168.6.229上面以root登录
#ssh-keygen
有什么提问基本上回车即可
后成的公钥在~/.ssh/id_rsa.pub
如果想在229通过密钥验证登录到222上面,则把229的公钥id_rsa.pub cp到222上面,先手动登录root,然后运行:
cat id_rsa.pub >> ~/.ssh/authorized_keys
这样就可以在229上面ssh 192.168.6.229不需要输入密码即可登录到222。上面php代码在229上面也可以通过验证。
3. SSH2模块的具体应用
通过SSH2验证通过后,得到的连接符为$connection
3.1 实现远程copy文件
远程服务器文件copy到本地:
复制代码 代码示例:
bool ssh2_scp_recv ( resource $session, string $remote_file, string $local_file )
Ps: 接收文件时,后面文件名可以为空,如:
复制代码 代码示例:
ssh2_scp_recv($connection, '/home/xiaozl/veno1.exe', '/home/xiaozl/')
本地文件copy到远程服务器
bool ssh2_scp_send ( resource $session, string $local_file, string $remote_file [, int $create_mode] )
Ps:发送文件时,后面的文件名不能为空,如:
ssh2_scp_send($connection, '/home/xiaozl/package.xml', '/home/xiaozl/package.xml');
3.2 执行远程服务器上的命令并取返回值
resource ssh2_exec( resource $session, string $command [, string $pty [, array $env [, int $width [, int $height [, int $width_height_type]]]]] )
在229上面执行222上的命令具体实例:
复制代码 代码示例:
$tcmd="cd /home/veno/gateway/radiusclient;";
$tcmd.="./nastool.sh get-status app=2b1c5364-db39-c76d-842c-11d4a81d555d";
$stream = ssh2_exec($connection, $tcmd);
stream_set_blocking($stream,true);
echo stream_get_contents($stream);
测试用例:
复制代码 代码示例:
<?php
echo "是访问到这里来了";
$connection = ssh2_connect('192.168.6.222', 22, array('hostkey'=>'ssh-rsa'));
if (ssh2_auth_pubkey_file($connection, 'root',
'/root/.ssh/id_rsa.pub',
'/root/.ssh/id_rsa'))
{
echo "Public Key Authentication Successfuln";
//$flag=ssh2_scp_recv($connection, '/home/xiaozl/veno1.exe', '/home/xiaozl/');
//接收时,后面文件名可以为空
//$flag=ssh2_scp_send($connection, '/home/xiaozl/package.xml', '/home/xiaozl/package.xml');
//发送时,后面的文件名不能为空
//echo $flag;
$tcmd="cd /home/veno/gateway/radiusclient;";
$tcmd.="./nastool.sh get-status app=2b1c5364-db39-c76d-842c-11d4a81d555d";
$stream = ssh2_exec($connection, $tcmd);
stream_set_blocking($stream,true);
echo stream_get_contents($stream);
} else { // www.jb200.com
echo ('Public Key Authentication Failed');
}
echo "<br/>";
$connection = ssh2_connect('192.168.6.222', 22);
ssh2_auth_password($connection, 'veno', '*******');
$tcmd="cd /home/veno/gateway/radiusclient;";
$tcmd.="./nastool.sh get-status app=2b1c5364-db39-c76d-842c-11d4a81d555d";
$stream = ssh2_exec($connection, $tcmd);
echo "<br/>";
echo "-----------------------------------------------";
stream_set_blocking($stream,true);
echo stream_get_contents($stream);
echo "-----------------------------------------------";
echo "<br/>";