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NetSshTask.php
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NetSshTask.php
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<?php
/*
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://phing.info>.
*/
require_once 'phing/Task.php';
/**
* Execute commands on a remote host using ssh.
*
* @author Johan Van den Brande <johan@vandenbrande.com>
* @author Jesse Greathouse <jesse.greathouse@gmail.com>
* @package phing.tasks.ext
*/
class NetSshTask extends Task {
private $host = "";
private $port = 22;
private $username = "";
private $password = "";
private $command = "";
private $pubkeyfile = '';
private $privkeyfile = '';
private $sshlib;
private $privkeyfilepassphrase = '';
private $crypt = 'RSA';
/**
* The name of the property to capture (any) output of the command
* @var string
*/
private $property = "";
/**
* Whether to display the output of the command
* @var boolean
*/
private $display = true;
public function setHost($host)
{
$this->host = $host;
}
public function getHost()
{
return $this->host;
}
public function setPort($port)
{
$this->port = $port;
}
public function getPort()
{
return $this->port;
}
public function setUsername($username)
{
$this->username = $username;
}
public function getUsername()
{
return $this->username;
}
public function setPassword($password)
{
$this->password = $password;
}
public function getPassword()
{
return $this->password;
}
/**
* Sets the public key file of the user to scp
*/
public function setPubkeyfile($pubkeyfile)
{
$this->pubkeyfile = $pubkeyfile;
}
/**
* Returns the pubkeyfile
*/
public function getPubkeyfile()
{
return $this->pubkeyfile;
}
/**
* Sets the private key file of the user to scp
*/
public function setPrivkeyfile($privkeyfile)
{
$this->privkeyfile = $privkeyfile;
}
/**
* Returns the private keyfile
*/
public function getPrivkeyfile()
{
return $this->privkeyfile;
}
/**
* Sets the private key file passphrase of the user to scp
*/
public function setPrivkeyfilepassphrase($privkeyfilepassphrase)
{
$this->privkeyfilepassphrase = $privkeyfilepassphrase;
}
/**
* Returns the private keyfile passphrase
*/
public function getPrivkeyfilepassphrase()
{
return $this->privkeyfilepassphrase;
}
/**
* Sets the ssh library identifier
*/
public function setSshlib($sshlib)
{
$this->sshlib = strtolower($sshlib);
}
/**
* Returns the ssh library identifier
*/
public function getSshlib()
{
return $this->sshlib;
}
/**
* Sets the encryption library identifier
*/
public function setCrypt($crypt)
{
$this->crypt = $crypt;
}
/**
* Returns the encryption library identifier
*/
public function getCrypt()
{
return $this->crypt;
}
public function setCommand($command)
{
$this->command = $command;
}
public function getCommand()
{
return $this->command;
}
/**
* Sets the name of the property to capture (any) output of the command
* @param string $property
*/
public function setProperty($property)
{
$this->property = $property;
}
/**
* Sets whether to display the output of the command
* @param boolean $display
*/
public function setDisplay($display)
{
$this->display = Boolean::cast($display);
}
public function init()
{
}
public function main()
{
switch ($this->sshlib) {
//if the sshlib attribute is netssh use the netssh method
case 'netssh':
if (!$this->requireable('Net/SSH2.php')) {
throw new BuildException("To use SshTask, you must have the Net_SSH2 library (phpseclib.sourceforge.net) in your php include_path.");
} else {
$this->netssh();
}
break;
//if the sshlib attribute is ssh2 use the ssh2 method
case 'ssh2':
if (!function_exists('ssh2_connect')) {
throw new BuildException("To use SshTask, you must have the PHP ssh2 extension.");
} else {
$this->ssh2();
}
break;
//if no sshlib is specified try to find a usable library
default:
//first try ssh2 by checking if the function ssh2_connect exists
if (function_exists('ssh2_connect')) {
$this->ssh2();
} else {
//if the first check failed, see if the Net_SSH2 library can be required
if (!$this->requireable('Net/SSH2.php')) {
throw new BuildException('To use SshTask, you must have the PHP ssh2 extension or the Net_SSH2 library (phpseclib.sourceforge.net) in your php include_path.');
} else {
$this->netssh();
}
}
break;
}
}
public function ssh2()
{
if ($this->host == "" || $this->username == "") {
throw new BuildException("Attribute 'hostname' and 'username' must be set");
}
$this->connection = ssh2_connect($this->host, $this->port);
if (is_null($this->connection)) {
throw new BuildException("Could not establish connection to " . $this->host . ":" . $this->port . "!");
}
$could_auth = null;
if ( $this->pubkeyfile ) {
$pubfile = realpath($this->pubkeyfile);
$privfile = realpath($this->privkeyfile);
echo $pubfile."\n";
echo $privfile."\n";
echo $this->privkeyfilepassphrase."\n";
$could_auth = ssh2_auth_pubkey_file($this->connection, $this->username, $pubfile, $privfile, $this->privkeyfilepassphrase);
} else {
$could_auth = ssh2_auth_password($this->connection, $this->username, $this->password);
}
if (!$could_auth) {
throw new BuildException("Could not authenticate connection!");
}
$stream = ssh2_exec($this->connection, $this->command);
if (!$stream) {
throw new BuildException("Could not execute command!");
}
$this->log("Executing command {$this->command}", Project::MSG_VERBOSE);
$output = "";
stream_set_blocking( $stream, true );
while( $buf = fread($stream,4096) ){
if ($this->display) {
print($buf);
}
$output .= $buf;
}
$this->log("Result: {$output}", Project::MSG_VERBOSE);
if (!empty($this->property)) {
$this->project->setProperty($this->property, $output);
}
fclose($stream);
}
public function netssh()
{
require_once('Net/SSH2.php');
if ($this->host == "" || $this->username == "") {
throw new BuildException("Attribute 'hostname' and 'username' must be set");
}
$this->connection = new Net_SSH2($this->host, $this->port);
if (is_null($this->connection)) {
throw new BuildException("Could not establish connection to " . $this->host . ":" . $this->port . "!");
}
$could_auth = null;
if ( $this->pubkeyfile ) {
$cryptclass = 'Crypt_'.$this->crypt;
if (!require_once('Crypt/'.$this->crypt.'.php')) {
throw new BuildException("To use Public or Private key files, you need to install $cryptclass from PHP Secure Communications Library (phpseclib.sourceforge.net).");
}
$key = new $cryptclass;
$key->setPassword($this->privkeyfilepassphrase);
$key->loadKey(file_get_contents($this->pubkeyfile));
if ( $this->privkeyfile ) {
$key->loadKey(file_get_contents($this->privkeyfile));
}
$could_auth = $this->connection->login($this->username, $key);
} else {
$could_auth = $this->connection->login($this->username, $this->password);
}
if (!$could_auth) {
throw new BuildException("Could not authenticate connection!");
}
$output = $this->connection->exec($this->command);
if (!$output) {
$output = "";
}
$this->log("Executing command {$this->command}", Project::MSG_VERBOSE);
$this->log("Result: {$output}", Project::MSG_VERBOSE);
if ($this->display) {
print($output);
}
if (!empty($this->property)) {
$this->project->setProperty($this->property, $output);
}
}
/**
* Checks if the file can be required from the include path.
* @param string $filename
* @return string|false
*/
private function requireable($filename)
{
$paths = explode(PATH_SEPARATOR, get_include_path());
foreach ($paths as $path) {
if (substr($path, -1) == DIRECTORY_SEPARATOR) {
$fullpath = $path.$filename;
} else {
$fullpath = $path.DIRECTORY_SEPARATOR.$filename;
}
if (file_exists($fullpath)) {
return $fullpath;
}
}
return false;
}
}
?>