// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2020 Google LLC.
// Copyright (c) 2018 Facebook

#include <test_progs.h>
#include "socket_cookie_prog.skel.h"
#include "network_helpers.h"

static int duration;

struct socket_cookie {
        __u64 cookie_key;
        __u32 cookie_value;
};

void test_socket_cookie(void)
{
        int server_fd = 0, client_fd = 0, cgroup_fd = 0, err = 0;
        socklen_t addr_len = sizeof(struct sockaddr_in6);
        struct socket_cookie_prog *skel;
        __u32 cookie_expected_value;
        struct sockaddr_in6 addr;
        struct socket_cookie val;

        skel = socket_cookie_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "skel_open"))
                return;

        cgroup_fd = test__join_cgroup("/socket_cookie");
        if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
                goto out;

        skel->links.set_cookie = bpf_program__attach_cgroup(
                skel->progs.set_cookie, cgroup_fd);
        if (!ASSERT_OK_PTR(skel->links.set_cookie, "prog_attach"))
                goto close_cgroup_fd;

        skel->links.update_cookie_sockops = bpf_program__attach_cgroup(
                skel->progs.update_cookie_sockops, cgroup_fd);
        if (!ASSERT_OK_PTR(skel->links.update_cookie_sockops, "prog_attach"))
                goto close_cgroup_fd;

        skel->links.update_cookie_tracing = bpf_program__attach(
                skel->progs.update_cookie_tracing);
        if (!ASSERT_OK_PTR(skel->links.update_cookie_tracing, "prog_attach"))
                goto close_cgroup_fd;

        server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
        if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
                goto close_cgroup_fd;

        client_fd = connect_to_fd(server_fd, 0);
        if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
                goto close_server_fd;

        err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.socket_cookies),
                                  &client_fd, &val);
        if (!ASSERT_OK(err, "map_lookup(socket_cookies)"))
                goto close_client_fd;

        err = getsockname(client_fd, (struct sockaddr *)&addr, &addr_len);
        if (!ASSERT_OK(err, "getsockname"))
                goto close_client_fd;

        cookie_expected_value = (ntohs(addr.sin6_port) << 8) | 0xFF;
        ASSERT_EQ(val.cookie_value, cookie_expected_value, "cookie_value");

close_client_fd:
        close(client_fd);
close_server_fd:
        close(server_fd);
close_cgroup_fd:
        close(cgroup_fd);
out:
        socket_cookie_prog__destroy(skel);
}