(Objective-C) 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 Objective-C Library Downloads MAC OS X (Cocoa) Libs iOS Libs

#import <CkoSsh.h>

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

CkoSsh *ssh = [[CkoSsh alloc] init];

BOOL success = [ssh Connect: @"172.16.16.100" port: [NSNumber numberWithInt: 22]];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

// Authenticate using login/password:
success = [ssh AuthenticatePw: @"myLogin" password: @"myPassword"];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

// Start a shell session.
int channelNum = [[ssh QuickShell] intValue];
if (channelNum < 0) {
    NSLog(@"%@",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: [NSNumber numberWithInt: channelNum] matchPattern: @"#" charset: @"utf-8" caseSensitive: YES];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

// Show what we received so far:
NSLog(@"%@",[ssh GetReceivedText: [NSNumber numberWithInt: channelNum] charset: @"utf-8"]);

// Send a "show clock" command.
success = [ssh ChannelSendString: [NSNumber numberWithInt: channelNum] strData: @"show clock\n" charset: @"utf-8"];

// Read the output to the next interactive prompt.
success = [ssh ChannelReceiveUntilMatch: [NSNumber numberWithInt: channelNum] matchPattern: @"#" charset: @"utf-8" caseSensitive: YES];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

NSLog(@"%@",[ssh GetReceivedText: [NSNumber numberWithInt: channelNum] charset: @"utf-8"]);

// Send another command and get the output, and so on...
success = [ssh ChannelSendString: [NSNumber numberWithInt: channelNum] strData: @"some other command\n" charset: @"utf-8"];
success = [ssh ChannelReceiveUntilMatch: [NSNumber numberWithInt: channelNum] matchPattern: @"#" charset: @"utf-8" caseSensitive: YES];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

NSLog(@"%@",[ssh GetReceivedText: [NSNumber numberWithInt: channelNum] charset: @"utf-8"]);

[ssh Disconnect];