(Swift 3,4,5...) SSH Commands to Cisco Switch

Demonstrates how to establish an SSH session with a Cisco switch (or something similar) and send commands in a device console session.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let ssh = CkoSsh()!

    var success: Bool = ssh.connect("172.16.16.100", port: 22)
    if success != true {
        print("\(ssh.lastErrorText!)")
        return
    }

    // Authenticate using login/password:
    success = ssh.authenticatePw("myLogin", password: "myPassword")
    if success != true {
        print("\(ssh.lastErrorText!)")
        return
    }

    // Start a shell session.
    var channelNum: Int = ssh.quickShell().intValue
    if channelNum < 0 {
        print("\(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.channelReceive(untilMatch: channelNum, matchPattern: "#", charset: "utf-8", caseSensitive: true)
    if success != true {
        print("\(ssh.lastErrorText!)")
        return
    }

    // Show what we received so far:
    print("\(ssh.getReceivedText(channelNum, charset: "utf-8")!)")

    // Send a "show clock" command.
    success = ssh.channelSendString(channelNum, strData: "show clock\n", charset: "utf-8")

    // Read the output to the next interactive prompt.
    success = ssh.channelReceive(untilMatch: channelNum, matchPattern: "#", charset: "utf-8", caseSensitive: true)
    if success != true {
        print("\(ssh.lastErrorText!)")
        return
    }

    print("\(ssh.getReceivedText(channelNum, charset: "utf-8")!)")

    // Send another command and get the output, and so on...
    success = ssh.channelSendString(channelNum, strData: "some other command\n", charset: "utf-8")
    success = ssh.channelReceive(untilMatch: channelNum, matchPattern: "#", charset: "utf-8", caseSensitive: true)
    if success != true {
        print("\(ssh.lastErrorText!)")
        return
    }

    print("\(ssh.getReceivedText(channelNum, charset: "utf-8")!)")

    ssh.disconnect()

}