(Objective-C) Get SSH Server Authentication Methods

Demonstrates how to get the authentication methods of an SSH server.

This example requires Chilkat v9.5.0.78 or greater.

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#import <CkoSsh.h>
#import <NSString.h>

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

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

// To get the authentication methods offered by an SSH server, we first connect.
BOOL success = [ssh Connect: @"example.com" port: [NSNumber numberWithInt: 22]];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

// Next, we call GetAuthMethods to receive a comma separated list of authentication methods
NSString *authMethods = [ssh GetAuthMethods];
if (ssh.LastMethodSuccess != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

// For example: publickey,password,keyboard-interactive
NSLog(@"%@%@",@"Authentication methods suported by this serve: ",authMethods);

// IMPORTANT:
// Getting the authentication methods will intentionally disconnect from the server.
// We'll need to re-connect, etc. to continue..

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

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

NSLog(@"%@",@"SSH Authentication successful.");

// ...

[ssh Disconnect];