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(PHP ActiveX) SSH to Cisco Switch - Processing "More" Responses

Demonstrates connecting to a Cisco switch, running a command to enable privileged mode, then running a command to get a paged response requiring the SPACE char to be sent to process "--More--".

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$ssh = new COM("Chilkat_9_5_0.Ssh");

$success = $ssh->Connect('SSH_SERVER_DOMAIN_OR_IP_ADDRESS',22);
if ($success != 1) {
    print $ssh->LastErrorText . "\n";
    exit;
}

// Authenticate using login/password:
$success = $ssh->AuthenticatePw('myLogin','myPassword');
if ($success != 1) {
    print $ssh->LastErrorText . "\n";
    exit;
}

// Start a shell session.
$channelNum = $ssh->QuickShell();
if ($channelNum < 0) {
    print $ssh->LastErrorText . "\n";
    exit;
}

// If the CISCO switch returns a prompt with ">", then read until we get the prompt.
// (It's not actually required that we do this, but it helps to know that all is OK at this point..)
$success = $ssh->ChannelReceiveUntilMatch($channelNum,'>','utf-8',1);
if ($success != 1) {
    print $ssh->LastErrorText . "\n";
    exit;
}

// Show what we received so far:
print $ssh->getReceivedText($channelNum,'utf-8') . "\n";

// Send the "ena" command to enable privileged mode.
// (For the Cisco switch, terminate command with a single CR char.)
$success = $ssh->ChannelSendString($channelNum,'ena\r','utf-8');
// Assume success for this example to make it shorter..

// Read to the "Password:" prompt.
$success = $ssh->ChannelReceiveUntilMatch($channelNum,'Password:','utf-8',1);
if ($success != 1) {
    print $ssh->LastErrorText . "\n";
    exit;
}

// Show what we received...
print $ssh->getReceivedText($channelNum,'utf-8') . "\n";

// Send the password.
$success = $ssh->ChannelSendString($channelNum,'MY_PASSWORD_FOR_ELEVATED_PRIVILEGE\r','utf-8');

// The prompt now changes from "Something>" to "Something#>
// Read until the new prompt..
$success = $ssh->ChannelReceiveUntilMatch($channelNum,'#','utf-8',1);
if ($success != 1) {
    print $ssh->LastErrorText . "\n";
    exit;
}

// Show what we received...
print $ssh->getReceivedText($channelNum,'utf-8') . "\n";

// Send the "show running-config" command.
// The response will be in multiple pages, each ending with "--More--" and requiring a SPACE bar to be sent
// to get the next page.
$success = $ssh->ChannelSendString($channelNum,'show running-config\r','utf-8');

// Consume the response until we end with another prompt.
$saMatch = new COM("Chilkat_9_5_0.StringArray");
// Change "YOUR_PROMPT" to your actual prompt.  We don't want to check for only "#" because
// it's not specific enough.  The data in the response could contain the "#" char...
$saMatch->Append('YOUR_PROMPT#');
$saMatch->Append('--More--');

$sbReceived = new COM("Chilkat_9_5_0.StringBuilder");
$moreComing = 1;
while (($moreComing == 1)) {

    $success = $ssh->ChannelReceiveUntilMatchN($channelNum,$saMatch,'utf-8',1);
    if ($success != 1) {
        print $ssh->LastErrorText . "\n";
        exit;
    }

    $moreComing = 0;

    $sbReceived->Clear();
    $sbReceived->Append($ssh->getReceivedText($channelNum,'utf-8'));

    print $sbReceived->getAsString() . "\n";

    if ($sbReceived->Contains('--More--',1) == 1) {
        $moreComing = 1;

        // Send a SPACE char just as if we were interactively pressing the SPACE key to get more output.
        $success = $ssh->ChannelSendString($channelNum,' ','utf-8');
    }

}

$ssh->Disconnect();

?>

 

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