Script Control of sftp

[Markus Friedl]

You have to abuse the SSH_ASKPASS mechanism.
Works fine for me, but it's not recommended
to have passwords in scripts.

On Fri, Oct 17, 2003 at 02:12:37PM -0400, Alan Little wrote:
> I am trying to conduct a full sftp session using the proc_open()
> function of PHP:
> 
> http://www.php.net/manual/en/function.proc-open.php
> 
> Once I get past the authentication stage, everything works fine: the
> script is able to write to sftp's stdin and capture its stdout.
> However, during the auth stage, these are apparently bypassed somehow,
> and IO takes place directly with the terminal. That is, the password
> prompt appears on the screen, and the password is accepted directly
> from the keyboard, while the password submitted by the script is
> ignored. Any ideas why, and/or how I can control the IO through the
> auth stage? Here is my code:
> 
> #!/usr/www/users/holotech/cgi-bin/php4.cgi
> <?php
>   $descriptorspec = array(
>     0 => array("pipe", "r"),
>     1 => array("pipe", "w"),
>     2 => array("file", "/tmp/error-output.txt", "a")
>   );
> 
>   $Server = "myserver.pair.com";
>   $User   = "holotech";
>   $Pass   = "########";
> 
>   $sftp   = "/usr/bin/sftp";
> 
>   $process = proc_open(
>     "$sftp $User@$Server",
>     $descriptorspec,
>     $pipes
>   );
> 
>   if (is_resource($process)) {
>     fwrite($pipes[0], $Password."\n");
>     fclose($pipes[0]);
> 
>     while(!feof($pipes[1])) {
>       echo fgets($pipes[1], 1024);
>     }
>     fclose($pipes[1]);
>     $return_value = proc_close($process);
> 
>     echo "\ncommand returned $return_value\n";
>   }
> ?>
> 
> -- 
> Alan Little
> Holotech Enterprises
> 
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