Zig

SFTP Public-Key Authentication

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Demonstrates how to authenticate with an SSH/SFTP server using publickey authentication. Zig

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

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

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

    const sftp = try chilkat.SFtp.init();
    defer sftp.deinit();

    // Set some timeouts, in milliseconds:
    sftp.setConnectTimeoutMs(5000);
    sftp.setIdleTimeoutMs(15000);

    // Connect to the SSH server.
    // The standard SSH port = 22
    // The hostname may be a hostname or IP address.
    const hostname = "sftp.example.com";
    const port = 22;
    sftp.connect(hostname, port) catch {
        std.debug.print("{s}\n", .{try sftp.getLastErrorText(alloc)});
        return;
    };

    const key = try chilkat.SshKey.init();
    defer key.deinit();

    // Load a PEM file into a string variable:
    // (This does not load the PEM file into the key.  The LoadText
    // method is a convenience method for loading the full contents of ANY text
    // file into a string variable.)
    const priv_key = key.loadText(alloc, "myPrivateKey.pem") catch {
        std.debug.print("{s}\n", .{try key.getLastErrorText(alloc)});
        return;
    };

    // Load a private key from a PEM string:
    // (Private keys may be loaded from OpenSSH and Putty formats.
    // Both encrypted and unencrypted private key file formats
    // are supported.  This example loads an unencrypted private
    // key in OpenSSH format.
    key.fromOpenSshPrivateKey(priv_key) catch {
        std.debug.print("{s}\n", .{try key.getLastErrorText(alloc)});
        return;
    };

    // Authenticate with the SSH server.  Chilkat SFTP supports
    // both password-based authenication as well as public-key
    // authentication.
    sftp.authenticatePk("myLogin", key) catch {
        std.debug.print("{s}\n", .{try sftp.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("{s}\n", .{try sftp.getLastErrorText(alloc)});
    std.debug.print("Public-Key Authentication Successful!\n", .{});
}