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Open a tunnel through a remote server
(PECL ssh2:0.10-0.9)
Example 2367. Opening a tunnel to an arbitrary host<?phpCode Examples / Notes » ssh2_tunneltim dot wood
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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ssh2_auth_hostbased_file ssh2_auth_none ssh2_auth_password ssh2_auth_pubkey_file ssh2_connect ssh2_exec ssh2_fetch_stream ssh2_fingerprint ssh2_methods_negotiated ssh2_publickey_add ssh2_publickey_init ssh2_publickey_list ssh2_publickey_remove ssh2_scp_recv ssh2_scp_send ssh2_sftp_lstat ssh2_sftp_mkdir ssh2_sftp_readlink ssh2_sftp_realpath ssh2_sftp_rename ssh2_sftp_rmdir ssh2_sftp_stat ssh2_sftp_symlink ssh2_sftp_unlink ssh2_sftp ssh2_shell ssh2_tunnel |
