Examples

Expect Usage Examples

Example #1 Expect Usage Example

This example connects to the remote host via SSH, and prints the remote uptime.


<?php

ini_set("expect.loguser", "Off");



$stream = fopen("expect://ssh root@remotehost uptime", "r");



$cases = array (

    array (0 => "password:", 1 => PASSWORD)

);



switch (expect_expectl ($stream, $cases)) {

    case PASSWORD:

        fwrite ($stream, "password\n");

        break;

 

    default:

        die ("Error was occurred while connecting to the remote host!\n");

}



while ($line = fgets($stream)) {

      print $line;

}

fclose ($stream);

?>

The following example connects to the remote host, determines whether installed OS is for 32 or 64 bit, then runs update for specific package.

Example #2 Another Expect Usage Example


<?php

ini_set("expect.timeout", -1);

ini_set("expect.loguser", "Off");



$stream = expect_popen("ssh root@remotehost");



while (true) {

    switch (expect_expectl ($stream, array (

            array ("password:", PASSWORD), // SSH is asking for password

            array ("yes/no)?", YESNO), // SSH is asking whether to store the host entry

            array ("~$ ", SHELL, EXP_EXACT), // We've got the shell!

    ))) {

        case PASSWORD:

            fwrite ($stream, "secret\n");

            break;



        case YESNO:

            fwrite ($stream, "yes\n");

            break;



        case SHELL:

            fwrite ($stream, "uname -a\n");

            while (true) {

                    switch (expect_expectl ($stream, array (

                            array ("~$ ", SHELL, EXP_EXACT), // We've got the shell!

                            array ("^Linux.*$", UNAME, EXP_REGEXP), // uname -a output

                    ), $match)) {

                        case UNAME:

                            $uname .= $match[0];

                            break;



                        case SHELL:

                            // Run update:

                            if (strstr ($uname, "x86_64")) {

                                    fwrite ($stream, "rpm -Uhv http://mirrorsite/somepath/some_64bit.rpm\n");

                            } else {

                                    fwrite ($stream, "rpm -Uhv http://mirrorsite/somepath/some_32bit.rpm\n");

                            }

                            fwrite ($stream, "exit\n");

                            break 2;



                        case EXP_TIMEOUT:

                        case EXP_EOF:

                            break 2;



                        default:

                            die ("Error has occurred!\n");

                    }

            }

            break 2;



        case EXP_TIMEOUT:

        case EXP_EOF:

            break 2;



        default:

            die ("Error has occurred!\n");

    }

}



fclose ($stream);

?>