Expect Usage Examples

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## 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);
    ?>