Zig

Get the SSH Server's Authentication Methods

Demonstrates the Chilkat Ssh.GetAuthMethods method, which queries a connected but unauthenticated SSH server for the authentication methods it advertises. It takes no arguments and returns a lowercase, comma-separated list such as publickey,password,keyboard-interactive. Call it after Connect and before authenticating.

Background: Knowing what the server accepts lets a client choose the right authentication path — for example, falling back to keyboard-interactive when password auth is not offered. Note the documented connection side effect: querying methods advances the SSH authentication state, so call it at the correct point in the sequence.

Chilkat Zig Downloads

Download Chilkat for Zig

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // Demonstrates the Ssh.GetAuthMethods method, which queries a connected but unauthenticated SSH
    // server for the authentication methods it advertises.  It takes no arguments and returns a
    // lowercase, comma-separated list such as "publickey,password,keyboard-interactive".

    const ssh = try chilkat.Ssh.init();
    defer ssh.deinit();

    // Connect to the SSH server.  Port 22 is the usual SSH port.
    const ssh_port = 22;
    ssh.connect("ssh.example.com", ssh_port) catch {
        std.debug.print("{s}\n", .{try ssh.getLastErrorText(alloc)});
        return;
    };

    // Query the advertised authentication methods.  Call after Connect, before authenticating.
    const methods = ssh.getAuthMethods(alloc) catch {
        std.debug.print("{s}\n", .{try ssh.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Server auth methods: {s}\n", .{methods});

    ssh.disconnect();
}