[php]
<?php

class Components_Ssh {
private $host;
private $user;
private $pass;
private $port;
private $conn = false;
private $error;
private $stream;
private $stream_timeout = 100;
private $log;
private $lastLog;

public function __construct ( $host, $user, $pass, $port, $serverLog ) {
$this->host = $host;
$this->user = $user;
$this->pass = $pass;
$this->port = $port;
$this->sLog = $serverLog;

if ( $this->connect ()->authenticate () ) {
return true;
}
}

public function isConnected () {
return ( boolean ) $this->conn;
}

public function __get ( $name ) {
return $this->$name;
}

public function connect () {
$this->logAction ( "Connecting to {$this->host}" );
if ( $this->conn = ssh2_connect ( $this->host, $this->port ) ) {
return $this;
}
$this->logAction ( "Connection to {$this->host} failed" );
throw new Exception ( "Unable to connect to {$this->host}" );
}

public function authenticate () {
$this->logAction ( "Authenticating to {$this->host}" );
if ( ssh2_auth_password ( $this->conn, $this->user, $this->pass ) ) {
return $this;
}
$this->logAction ( "Authentication to {$this->host} failed" );
throw new Exception ( "Unable to authenticate to {$this->host}" );
}

public function sendFile ( $localFile, $remoteFile, $permision = 0644 ) {
if ( ! is_file ( $localFile ) ) throw new Exception ( "Local file {$localFile} does not exist" );
$this->logAction ( "Sending file $localFile as $remoteFile" );

$sftp = ssh2_sftp ( $this->conn );
$sftpStream = @fopen ( ‘ssh2.sftp://’ . $sftp . $remoteFile, ‘w’ );
if ( ! $sftpStream ) {
// if 1 method failes try the other one
if ( ! @ssh2_scp_send ( $this->conn, $localFile, $remoteFile, $permision ) ) {
throw new Exception ( "Could not open remote file: $remoteFile" );
}
else {
return true;
}
}

$data_to_send = @file_get_contents ( $localFile );

if ( @fwrite ( $sftpStream, $data_to_send ) === false ) {
throw new Exception ( "Could not send data from file: $localFile." );
}

fclose ( $sftpStream );

$this->logAction ( "Sending file $localFile as $remoteFile succeeded" );
return true;
}

public function getFile ( $remoteFile, $localFile ) {
$this->logAction ( "Receiving file $remoteFile as $localFile" );
if ( ssh2_scp_recv ( $this->conn, $remoteFile, $localFile ) ) {
return true;
}
$this->logAction ( "Receiving file $remoteFile as $localFile failed" );
throw new Exception ( "Unable to get file to {$remoteFile}" );
}

public function cmd ( $cmd, $returnOutput = false ) {
$this->logAction ( "Executing command $cmd" );
$this->stream = ssh2_exec ( $this->conn, $cmd );

if ( FALSE === $this->stream ) {
$this->logAction ( "Unable to execute command $cmd" );
throw new Exception ( "Unable to execute command ‘$cmd’" );
}
$this->logAction ( "$cmd was executed" );

stream_set_blocking ( $this->stream, true );
stream_set_timeout ( $this->stream, $this->stream_timeout );
$this->lastLog = stream_get_contents ( $this->stream );

$this->logAction ( "$cmd output: {$this->lastLog}" );
fclose ( $this->stream );
$this->log .= $this->lastLog . "\n";
return ( $returnOutput ) ? $this->lastLog : $this;
}

public function shellCmd ( $cmds = array () ) {
$this->logAction ( "Openning ssh2 shell" );
$this->shellStream = ssh2_shell ( $this->conn );

sleep ( 1 );
$out = ”;
while ( $line = fgets ( $this->shellStream ) ) {
$out .= $line;
}

$this->logAction ( "ssh2 shell output: $out" );

foreach ( $cmds as $cmd ) {
$out = ”;
$this->logAction ( "Writing ssh2 shell command: $cmd" );
fwrite ( $this->shellStream, "$cmd" . PHP_EOL );
sleep ( 1 );
while ( $line = fgets ( $this->shellStream ) ) {
$out .= $line;
sleep ( 1 );
}
$this->logAction ( "ssh2 shell command $cmd output: $out" );
}

$this->logAction ( "Closing shell stream" );
fclose ( $this->shellStream );
}

public function getLastOutput () {
return $this->lastLog;
}

public function getOutput () {
return $this->log;
}

public function disconnect () {
$this->logAction ( "Disconnecting from {$this->host}" );
// if disconnect function is available call it..
if ( function_exists ( ‘ssh2_disconnect’ ) ) {
ssh2_disconnect ( $this->conn );
}
else { // if no disconnect func is available, close conn, unset var
@fclose ( $this->conn );
$this->conn = false;
}
// return null always
return NULL;
}

public function fileExists ( $path ) {
$output = $this->cmd ( "[ -f $path ] && echo 1 || echo 0", true );
return ( bool ) trim ( $output );
}
}
[/php]

读取公钥的脚本
[php]
#!/usr/bin/php
<?php
$server = ["192.168.1.2", "192.168.1.20", "192.168.1.200"];

$server = array_map(function($k){

printf("%s%s%s%s", str_repeat("=", 30), $k, str_repeat("=", 30), PHP_EOL);

$connection = ssh2_connect($k, 22);

$sshDir = $_SERVER["HOME"] . "/.ssh/";

ssh2_auth_pubkey_file($connection, ‘shuhai’, $sshDir.’id_rsa.pub’, $sshDir.’id_rsa’);

ssh2_exec($connection, ‘echo "eoe!@#admin" | sudo -s’);

$stream = ssh2_exec($connection, ‘whoami’);
stream_set_blocking( $stream, true );
echo stream_get_contents($stream);

return;

$stream = ssh2_exec($connection, ‘php -v’);
stream_set_blocking( $stream, true );
echo stream_get_contents($stream);

$stream = ssh2_exec($connection, ‘mysql –version’);
stream_set_blocking( $stream, true );
echo stream_get_contents($stream);

}, $server);
[/php]