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(Mono C#) SSH to Cisco Switch - Processing "More" ResponsesDemonstrates 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--".
// This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.Ssh ssh = new Chilkat.Ssh(); bool success = ssh.Connect("SSH_SERVER_DOMAIN_OR_IP_ADDRESS",22); if (success != true) { Debug.WriteLine(ssh.LastErrorText); return; } // Authenticate using login/password: success = ssh.AuthenticatePw("myLogin","myPassword"); if (success != true) { Debug.WriteLine(ssh.LastErrorText); return; } // Start a shell session. int channelNum = ssh.QuickShell(); if (channelNum < 0) { Debug.WriteLine(ssh.LastErrorText); return; } // 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",true); if (success != true) { Debug.WriteLine(ssh.LastErrorText); return; } // Show what we received so far: Debug.WriteLine(ssh.GetReceivedText(channelNum,"utf-8")); // 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",true); if (success != true) { Debug.WriteLine(ssh.LastErrorText); return; } // Show what we received... Debug.WriteLine(ssh.GetReceivedText(channelNum,"utf-8")); // 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",true); if (success != true) { Debug.WriteLine(ssh.LastErrorText); return; } // Show what we received... Debug.WriteLine(ssh.GetReceivedText(channelNum,"utf-8")); // 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. Chilkat.StringArray saMatch = new Chilkat.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--"); Chilkat.StringBuilder sbReceived = new Chilkat.StringBuilder(); bool moreComing = true; while ((moreComing == true)) { success = ssh.ChannelReceiveUntilMatchN(channelNum,saMatch,"utf-8",true); if (success != true) { Debug.WriteLine(ssh.LastErrorText); return; } moreComing = false; sbReceived.Clear(); sbReceived.Append(ssh.GetReceivedText(channelNum,"utf-8")); Debug.WriteLine(sbReceived.GetAsString()); if (sbReceived.Contains("--More--",true) == true) { moreComing = true; // 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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