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(PHP ActiveX) SSH Tunnel (Port Forwarding via direct-tcpip channel)Demonstrates how to create an SSH tunnel to a remote hostname:port via a direct-tcpip channel.
<?php // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Ssh') $ssh = new COM("Chilkat.Ssh"); // Connect to an SSH server: // Hostname may be an IP address or hostname: $hostname = '192.168.1.117'; $port = 22; $success = $ssh->Connect($hostname,$port); if ($success != 1) { print $ssh->LastErrorText . "\n"; exit; } // Wait a max of 5 seconds when reading responses.. $ssh->IdleTimeoutMs = 5000; // Authenticate using login/password: $success = $ssh->AuthenticatePw('chilkat','myPassword'); if ($success != 1) { print $ssh->LastErrorText . "\n"; exit; } // Open a direct-tcpip channel. We want the SSH server to connect // to www.chilkatsoft.com, port 80 (i.e. the web server). // Data sent through the SSH tunnel is forwarded to the remote // host:port. (Note: The remote host:port does not need to be // a web server. It can be anything. It can be your own // customer application server that listens on a port, or any // other type of server.) // When we read from the SSH channel, we'll be reading data // sent from the remote host:port (i.e. the web server in this // example). $channelNum = $ssh->OpenDirectTcpIpChannel('www.chilkatsoft.com',80); if ($channelNum < 0) { print $ssh->LastErrorText . "\n"; exit; } // Build a simple HTTP GET request for http://www.chilkatsoft.com/xyz.html $httpReq = 'GET /xyz123.html HTTP/1.1\r\nHost: www.chilkatsoft.com\r\n\r\n'; // Send the HTTP request: $success = $ssh->ChannelSendString($channelNum,$httpReq,'ansi'); if ($success != 1) { print $ssh->LastErrorText . "\n"; exit; } // Get the HTTP response. // First read the HTTP response header which ends with a double CRLF. // Calling ChannelReceiveUntilMatch will receive until match string is seen, // or until a timeout occurs (IdleTimeoutMs property). ChannelReceiveUntilMatch // may read beyond the match string, but it will stop reading as soon as the match // string is seen. $caseSensitive = 0; $matchStr = '\r\n\r\n'; $success = $ssh->ChannelReceiveUntilMatch($channelNum,$matchStr,'ansi',$caseSensitive); if ($success != 1) { print $ssh->LastErrorText . "\n"; exit; } // Extract the HTTP header from the receive buffer. // (GetReceiveTextS extracts up to and including the match string from the receive buffer) $responseHeader = $ssh->getReceivedTextS($channelNum,$matchStr,'ansi'); print '---- HTTP Response Header ----' . "\n"; print $responseHeader . "\n"; // Now get the body of the HTTP response (this is the HTML content // of http://www.chilkatsoft.com/xyz.html // It's possible we've already received the entire HTTP response in the // call to ChannelReceiveUntilMatch. Therefore, we'll poll for any remaining data // and wait a max of .2 seconds. $pollTimeoutMs = 200; $numBytesRead = $ssh->ChannelPoll($channelNum,$pollTimeoutMs); // We're not checking for an error here. // A return value of -2 means that no data was available and the poll simply timed out (not an error) // A return value of -1 indicates an error. // A return value greater than 0 indicates that additional data was received. print '---- HTML BODY ----' . "\n"; // Extract the remainder of the accumulated data in the internal receive buffer. // This should be our HTML body: $htmlBody = $ssh->getReceivedText($channelNum,'ansi'); print $htmlBody . "\n"; // Close the channel: $success = $ssh->ChannelSendClose($channelNum); if ($success != 1) { print $ssh->LastErrorText . "\n"; exit; } // Disconnect $ssh->Disconnect(); ?> |
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