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ssh2_shell> <ssh2_sftp_unlink
[edit] Last updated: Fri, 10 Feb 2012

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ssh2_sftp

(PECL ssh2 >= 0.9.0)

ssh2_sftpSFTP サブシステムを初期化する

説明

resource ssh2_sftp ( resource $session )

すでに接続された SSH2 サーバから SFTP サブシステムを要求します。

パラメータ

session

ssh2_connect() のコールによって取得した SSH 接続リンク ID。

返り値

このメソッドは全ての他の ssh2_sftp_*() や ssh2.sftp:// fopen ラッパーで使用する SSH2 SFTP リソースを返します。

例1 SFTP 経由でのファイルのオープン

<?php
$connection 
ssh2_connect('shell.example.com'22);
ssh2_auth_password($connection'username''password');

$sftp ssh2_sftp($connection);

$stream fopen("ssh2.sftp://$sftp/path/to/file"'r');
?>

参考



ssh2_shell> <ssh2_sftp_unlink
[edit] Last updated: Fri, 10 Feb 2012
 
add a note add a note User Contributed Notes ssh2_sftp
sandipshah at vthrive dot com 17-Nov-2009 12:05
In

$stream = fopen("ssh2.sftp://$sftp/path/to/file", 'r');

please make sure that you are specifying the "absolute" path to a file.

If not, you'll get errors like

"Unable to open file ..."

The reasoning is simple ... ssh2.sftp://$sftp points to the "root" directory on the remote server, where, most likely, one does not have access.

It is necessary to point it to your "home" directory.  For example, "ssh2.sftp://$sftp/home/username/filename" ... where "/home/username" is where your home directory is.
bas weerman 09-Jul-2008 12:13
I changed the read function to:

    public function receiveFile($remote_file, $local_file)
    {
        $sftp = $this->sftp;
        $stream = @fopen("ssh2.sftp://$sftp$remote_file", 'r');
        if (! $stream)
            throw new Exception("Could not open file: $remote_file");
        $size = $this->getFileSize($remote_file);           
        $contents = '';
        $read = 0;
        $len = $size;
        while ($read < $len && ($buf = fread($stream, $len - $read))) {
          $read += strlen($buf);
          $contents .= $buf;
        }       
        file_put_contents ($local_file, $contents);
        @fclose($stream);
    }

    public function getFileSize($file){
      $sftp = $this->sftp;
        return filesize("ssh2.sftp://$sftp$file");
    }
tom at r dot je 02-Jul-2008 06:33
Not sure if this is a bug of some kind of security feature.

When reading files using ssh2.sftp anything inside php tags is inexplicably stripped.

foo.php
one
<?
echo 'two';
?>
echo 'three';

$stream = fopen("ssh2.sftp://$sftp$file", 'r');
echo filesize("ssh2.sftp://$sftp$file"); //CORRECT
echo fread($stream, filesize("ssh2.sftp://$sftp$file")); //prints "onethree"

Not sure why this happens and haven't found a workaround.
bas weerman 14-May-2008 09:22
I added some functionality for scanning the filesystem and receiving and deleting files.

class SFTPConnection
{
    private $connection;
    private $sftp;

    public function __construct($host, $port=22)
    {
        $this->connection = @ssh2_connect($host, $port);
        if (! $this->connection)
            throw new Exception("Could not connect to $host on port $port.");
    }

    public function login($username, $password)
    {
        if (! @ssh2_auth_password($this->connection, $username, $password))
            throw new Exception("Could not authenticate with username $username " . "and password $password.");
        $this->sftp = @ssh2_sftp($this->connection);
        if (! $this->sftp)
            throw new Exception("Could not initialize SFTP subsystem.");
    }

    public function uploadFile($local_file, $remote_file)
    {
        $sftp = $this->sftp;
        $stream = @fopen("ssh2.sftp://$sftp$remote_file", 'w');
        if (! $stream)
            throw new Exception("Could not open file: $remote_file");
        $data_to_send = @file_get_contents($local_file);
        if ($data_to_send === false)
            throw new Exception("Could not open local file: $local_file.");
        if (@fwrite($stream, $data_to_send) === false)
            throw new Exception("Could not send data from file: $local_file.");
        @fclose($stream);
    }
   
        function scanFilesystem($remote_file) {
              $sftp = $this->sftp;
            $dir = "ssh2.sftp://$sftp$remote_file"; 
              $tempArray = array();
            $handle = opendir($dir);
          // List all the files
            while (false !== ($file = readdir($handle))) {
            if (substr("$file", 0, 1) != "."){
              if(is_dir($file)){
//                $tempArray[$file] = $this->scanFilesystem("$dir/$file");
               } else {
                 $tempArray[]=$file;
               }
             }
            }
           closedir($handle);
          return $tempArray;
        }   

    public function receiveFile($remote_file, $local_file)
    {
        $sftp = $this->sftp;
        $stream = @fopen("ssh2.sftp://$sftp$remote_file", 'r');
        if (! $stream)
            throw new Exception("Could not open file: $remote_file");
        $contents = fread($stream, filesize("ssh2.sftp://$sftp$remote_file"));           
        file_put_contents ($local_file, $contents);
        @fclose($stream);
    }
       
    public function deleteFile($remote_file){
      $sftp = $this->sftp;
      unlink("ssh2.sftp://$sftp$remote_file");
    }
}
duke1 at drakkon dot net 23-Apr-2008 05:38
if anyone is interested on how to get a directory listing:
$SSH_CONNECTION= ssh2_connect('shell.example.com', 22);
ssh2_auth_password($SSH_CONNECTION, 'username', 'password');
//-------------------------------------------------------------------
//this function finds all files within  given directory and returns them
function scanFilesystem($dir) {
    $tempArray = array();
    $handle = opendir($dir);
  // List all the files
    while (false !== ($file = readdir($handle))) {
    if (substr("$file", 0, 1) != "."){
           if(is_dir($file)){
            $tempArray[$file]=scanFilesystem("$dir/$file");
        } else {
            $tempArray[]=$file;
        }
    }
    }
   closedir($handle);
  return $tempArray;
}

//-------------------------------------------------------------------
$sftp = ssh2_sftp($SSH_CONNECTION);

//code to get listing of all OUTGOING files
$dir = "ssh2.sftp://$sftp/outgoing";
$outgoing = scanFilesystem($dir);
sort($outgoing);
print_r($outgoing);
Curtis Wyatt 28-Jan-2008 04:58
The sftp class provided by David Barnes works great.  However, if you get errors about fopen and it failing to open a stream, try the fully qualified path on the remote server.

For example, if you are uploading a file to /Users/username/Sites/file.txt this may not work:

<?php
try {
   
$sftp = new SFTPConnection("localhost", 22);
   
$sftp->login("username", "password");
   
$sftp->uploadFile("/tmp/to_be_sent", "Sites/file.txt");
}
catch (
Exception $e) {
    echo
$e->getMessage() . "\n";
}
?>

but this will:

<?php
try {
   
$sftp = new SFTPConnection("localhost", 22);
   
$sftp->login("username", "password");
   
$sftp->uploadFile("/tmp/to_be_sent", "/Users/username/Sites/file.txt");
}
catch (
Exception $e) {
    echo
$e->getMessage() . "\n";
}
?>

Don't assume that since you are connecting as that user that you are starting in its home space.

Another possible option is that you need to use http://us.php.net/manual/en/function.ssh2-sftp-mkdir.php first to make the directory if it does not exist already, and then upload the file into it.
David Barnes 16-Nov-2006 12:08
Here is an example of how to send a file with SFTP:

<?php

class SFTPConnection
{
    private
$connection;
    private
$sftp;

    public function
__construct($host, $port=22)
    {
       
$this->connection = @ssh2_connect($host, $port);
        if (!
$this->connection)
            throw new
Exception("Could not connect to $host on port $port.");
    }

    public function
login($username, $password)
    {
        if (! @
ssh2_auth_password($this->connection, $username, $password))
            throw new
Exception("Could not authenticate with username $username " .
                               
"and password $password.");

       
$this->sftp = @ssh2_sftp($this->connection);
        if (!
$this->sftp)
            throw new
Exception("Could not initialize SFTP subsystem.");
    }

    public function
uploadFile($local_file, $remote_file)
    {
       
$sftp = $this->sftp;
       
$stream = @fopen("ssh2.sftp://$sftp$remote_file", 'w');

        if (!
$stream)
            throw new
Exception("Could not open file: $remote_file");

       
$data_to_send = @file_get_contents($local_file);
        if (
$data_to_send === false)
            throw new
Exception("Could not open local file: $local_file.");

        if (@
fwrite($stream, $data_to_send) === false)
            throw new
Exception("Could not send data from file: $local_file.");

        @
fclose($stream);
    }
}

try
{
   
$sftp = new SFTPConnection("localhost", 22);
   
$sftp->login("username", "password");
   
$sftp->uploadFile("/tmp/to_be_sent", "/tmp/to_be_received");
}
catch (
Exception $e)
{
    echo
$e->getMessage() . "\n";
}

?>

 
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