/* SPDX-License-Identifier: LGPL-2.1+ */

#include "device-util.h"

#include "alloc-util.h"

#include "link-config.h"

#include "log.h"

#include "string-util.h"

#include "udev-builtin.h"

static link_config_ctx *ctx = NULL;

static int builtin_net_setup_link(sd_device *dev, int argc, char **argv, bool test) {

        _cleanup_free_ char *driver = NULL;

        const char *name = NULL;

        link_config *link;

        int r;

        if (argc > 1)

                return log_device_error_errno(dev, SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments.");

        r = link_get_driver(ctx, dev, &driver);

        if (r >= 0)

                udev_builtin_add_property(dev, test, "ID_NET_DRIVER", driver);

        r = link_config_get(ctx, dev, &link);

        if (r < 0) {

                if (r == -ENOENT)

                        return log_device_debug_errno(dev, r, "No matching link configuration found.");

                return log_device_error_errno(dev, r, "Failed to get link config: %m");

        }

        r = link_config_apply(ctx, link, dev, &name);

        if (r < 0)

                log_device_warning_errno(dev, r, "Could not apply link config, ignoring: %m");

        udev_builtin_add_property(dev, test, "ID_NET_LINK_FILE", link->filename);

        if (name)

                udev_builtin_add_property(dev, test, "ID_NET_NAME", name);

        return 0;

}

static int builtin_net_setup_link_init(void) {

        int r;

        if (ctx)

                return 0;

        r = link_config_ctx_new(&ctx);

        if (r < 0)

                return r;

        r = link_config_load(ctx);

        if (r < 0)

                return r;

        log_debug("Created link configuration context.");

        return 0;

}

static void builtin_net_setup_link_exit(void) {

        link_config_ctx_free(ctx);

        ctx = NULL;

        log_debug("Unloaded link configuration context.");

}

static bool builtin_net_setup_link_validate(void) {

        log_debug("Check if link configuration needs reloading.");

        if (!ctx)

                return false;

        return link_config_should_reload(ctx);

}

const UdevBuiltin udev_builtin_net_setup_link = {

        .name = "net_setup_link",

        .cmd = builtin_net_setup_link,

        .init = builtin_net_setup_link_init,

        .exit = builtin_net_setup_link_exit,

        .validate = builtin_net_setup_link_validate,

        .help = "Configure network link",

        .run_once = false,

};