SunshinePHP Developer Conference 2015

ssh2_tunnel

(PECL ssh2 >= 0.9.0)

ssh2_tunnelOpen a tunnel through a remote server

说明

resource ssh2_tunnel ( resource $session , string $host , int $port )

Open a socket stream to an arbitrary host/port by way of the currently connected SSH server.

参数

session

An SSH connection link identifier, obtained from a call to ssh2_connect().

host

port

返回值

范例

Example #1 Opening a tunnel to an arbitrary host

<?php
$connection 
ssh2_connect('shell.example.com'22);
ssh2_auth_pubkey_file($connection'username''id_dsa.pub''id_dsa');

$tunnel ssh2_tunnel($connection'10.0.0.101'12345);
?>

参见

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User Contributed Notes 1 note

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tim dot wood at datawranglers dot com
7 years ago
The tunnel command doesn't seem to support ssh2_auth_password.   For people trying to go from their own computer to a second box and then ssh one to a third box, here's an approach that works for me.  YMMV and IMKYD.

// the relay box
$ip1   = '192.168.1.1';
$user1 = 'usename';
$pswd1 = 'password';

// the destination box
$ip3   = '192.168.1.2';
$user3 = 'usename';
$pswd3 = 'password';

// PART 1
// set up a basic ssh2 connection:

$connection = ssh2_connect($ip1, 22);
ssh2_auth_password($connection, $user1, $pswd1);
$shell = ssh2_shell($connection,"bash");

// PART 2
// Create a basic expect script to handle
// a simple ssh login and then passes the session back to the user

// remove any existing login expect script
$cmd = "rm -f login-via-ssh.expect";
fwrite($shell,$cmd . "\n");
// see discussion with other commands on sleep vs other options
sleep( 1 );

// echo does not like #!/usr/bin/expect ... so gawk it over
$cmd = "echo \"\" | gawk '{ print \"#\" \"!\" \"\/usr\/bin\/expect\" }' > login-via-ssh.expect";
fwrite($shell,$cmd . "\n");
// more bad sleep
sleep( 1 );

// Add in the rest of the expect script
$script = array(
    'spawn ssh -l [lindex \$argv 1] [lindex \$argv 0]',
    'expect \"password:\"',
    'send \"[lindex \$argv 2]\r\"',
    'interact'
);
$append = '>>';
foreach( $script as $line ) {
    $cmd = 'echo "'. $line . '" '.$append.' login-via-ssh.expect' . "\n";
    fwrite($shell,$cmd);
    sleep( 1 );
}

// Make it executable
$cmd = "chmod +x login-via-ssh.expect";
fwrite($shell,$cmd . "\n");
sleep( 1 );

// PART 3
// Get into the other server
// Pass an ip, username, password to the expect script
// The expect script happily logs the php script in.

// put together the command and execute it
$cmd = "./login-via-ssh.expect $ip3 $user3 $pswd3";
fwrite($shell,$cmd . "\n");
// A long bad sleep since ssh takes a while to respond
sleep( 15 );
while( $line = fgets( $shell, 4096 ) ) {
    // flush the buffer
}

// do a test directory listing to show that we really got there
$cmd = "ls -alb /";
fwrite($shell,$cmd . "\n");
sleep( 1 );
while( $line = fgets( $shell, 4096 ) ) {
    print $line;
}

Bingo... the php script is tunneled to the third box.
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