Zig Requires Chilkat v10.1.2+

Secure FTP with Client Certificate

See more FTP Examples

Chilkat FTP2 provides the ability to use a client certificate with secure FTP (implicit or explicit SSL/TLS). This example demonstrates how to load a certificate from a .pfx and use it as the client-side SSL cert. Note: Client-side certificates are only needed in situations where the server demands one. Zig

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

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

    var success: bool = false;

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

    const ftp = try chilkat.Ftp2.init();
    defer ftp.deinit();

    ftp.setHostname("ftp.example.com");
    ftp.setPort(21);
    ftp.setUsername("test");
    ftp.setPassword("test");

    // This example will use explict TLS/SSL.
    // Establish an explicit secure channel after connection
    // on the standard FTP port 21.
    ftp.setAuthTls(true);

    // The Ssl property is for establishing an implicit SSL connection
    // on port 990.  Because this example uses explicit SSL, it
    // should remain false.
    ftp.setSsl(false);

    // Load a certificate from a .pfx
    // A PFX may contain several certs, including the certificates
    // in a chain of authority.
    const cert_store = try chilkat.CertStore.init();
    defer cert_store.deinit();
    const password = "***";
    // Load the certs from a PFX into an in-memory certificate store:
    success = if (cert_store.loadPfxFile("chilkat.pfx", password)) true else |_| false;
    if (!success) {
        std.debug.print("{s}\n", .{try cert_store.getLastErrorText(alloc)});
        return;
    }

    // Find the desired certificate.
    const json_cn = try chilkat.JsonObject.init();
    defer json_cn.deinit();
    json_cn.updateString("CN", "cert common name") catch {};

    const cert = try chilkat.Cert.init();
    defer cert.deinit();
    success = if (cert_store.findCert(json_cn, cert)) true else |_| false;
    if (!success) {
        std.debug.print("Certificate not found!\n", .{});
        return;
    }

    // Use this certificate for our secure (SSL/TLS) connection:
    success = if (ftp.setSslClientCert(cert)) true else |_| false;

    // Connect and login to the FTP server.  The connection is
    // made secure because of the AuthTls setting.
    success = if (ftp.connect()) true else |_| false;
    if (!success) {
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
        return;
    } else {
        // LastErrorText contains information even when
        // successful. This allows you to visually verify
        // that the secure connection actually occurred.
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
    }

    std.debug.print("Secure FTP Channel Established!\n", .{});

    // Do whatever you're doing to do ...
    // upload files, download files, etc...

    // .....
    // .....

    success = if (ftp.disconnect()) true else |_| false;
}