Question

I have a little problem. I’m using Codeigniter with SSH library written by Shuky (https://bitbucket.org/quicktips/codeigniter-ssh2-library/src/a444968345ba/SSH.php — You can see the code by following this link).

Everything related with SSH works fine with other devices, but when I try to use this library and execute commands on Cisco devices, nothing happens (commands are not executed). I know that the connection is successful, but I can’t execute any commands.

When I try to run and execute comands through SSH on Cisco devices I get this error:

A PHP Error was encountered

Severity: Warning

Message: stream_set_blocking() expects parameter 1 to be resource, boolean given

Filename: libraries/SSH.php

Line Number: 128

A PHP Error was encountered

Severity: Warning

Message: fread() expects parameter 1 to be resource, boolean given

Filename: libraries/SSH.php

Line Number: 129

In the library these lines look like this:

       /**
 * Get stream data
 *
 * @access privte
 * @return bool
 */
function _get_stream_data($stream) {
    stream_set_blocking( $stream, true );
    while( $buf = fread($stream,4096) ) {
        $this->data .= $buf.'~';
    }
    return TRUE;
}    



line 128 - stream_set_blocking( $stream, true );
line 129 - while( $buf = fread($stream,4096) ) {

Maybe you guys know where the problem is?

Thank you for your time and your answers!

Answer 1

Try using phpseclib, a pure PHP SSH implementation. The fact that it’s currently supported not-withstanding, it also supports logging, which might assist you – or the author – in figuring out what’s going on (assuming phpseclib has the same problem, which it might not!)