81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include <stdbool.h>

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include <getopt.h>

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "sd-network.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "sd-rtnl.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "libudev.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "build.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "util.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "pager.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "rtnl-util.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "udev-util.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "arphrd-list.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder#include "local-addresses.h"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic bool arg_no_pager = false;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic bool arg_legend = true;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic bool arg_all = false;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic void pager_open_if_enabled(void) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (arg_no_pager)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder pager_open(false);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic int link_get_type_string(int iftype, struct udev_device *d, char **ret) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const char *t;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder char *p;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (iftype == ARPHRD_ETHER && d) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const char *devtype, *id = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder /* WLANs have iftype ARPHRD_ETHER, but we want

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder devtype = udev_device_get_devtype(d);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (streq_ptr(devtype, "wlan"))

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder id = "wlan";

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder else if (streq_ptr(devtype, "wwan"))

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder id = "wwan";

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (id) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder p = strdup(id);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!p)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return -ENOMEM;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder *ret = p;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return 1;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder t = arphrd_to_name(iftype);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!t) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder *ret = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return 0;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder p = strdup(t);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!p)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return -ENOMEM;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder ascii_strlower(p);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder *ret = p;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return 0;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroedertypedef struct LinkInfo {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const char *name;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder int ifindex;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder unsigned iftype;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder} LinkInfo;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic int link_info_compare(const void *a, const void *b) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const LinkInfo *x = a, *y = b;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return x->ifindex - y->ifindex;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic int decode_and_sort_links(sd_rtnl_message *m, LinkInfo **ret) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ LinkInfo *links = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder size_t size = 0, c = 0;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_rtnl_message *i;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder int r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder for (i = m; i; i = sd_rtnl_message_next(i)) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const char *name;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder unsigned iftype;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder uint16_t type;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder int ifindex;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_get_type(i, &type);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (type != RTM_NEWLINK)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder continue;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_link_get_ifindex(i, &ifindex);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &name);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_link_get_type(i, &iftype);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!GREEDY_REALLOC(links, size, c+1))

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return -ENOMEM;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder links[c].name = name;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder links[c].ifindex = ifindex;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder links[c].iftype = iftype;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder c++;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder qsort(links, c, sizeof(LinkInfo), link_info_compare);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder *ret = links;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder links = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return (int) c;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic int list_links(char **args, unsigned n) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_udev_unref_ struct udev *udev = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ LinkInfo *links = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder int r, c, i;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder pager_open_if_enabled();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_open(&rtnl, 0);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder log_error("Failed to connect to netlink: %s", strerror(-r));

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder udev = udev_new();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!udev) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder log_error("Failed to connect to udev: %m");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return -errno;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_create_error(r);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_request_dump(req, true);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_create_error(r);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_call(rtnl, req, 0, &reply);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder log_error("Failed to enumerate links: %s", strerror(-r));

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (arg_legend)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf("%3s %-16s %-10s %-11s %-10s\n", "IDX", "LINK", "TYPE", "ADMIN", "OPERATIONAL");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder c = decode_and_sort_links(reply, &links);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (c < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_parse_error(c);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder for (i = 0; i < c; i++) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ char *state = NULL, *operational_state = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_udev_device_unref_ struct udev_device *d = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const char *on_color_oper = "", *off_color_oper = "",

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder *on_color = "", *off_color = "";

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder char devid[2 + DECIMAL_STR_MAX(int)];

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ char *t = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_network_get_link_state(links[i].ifindex, &state);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_network_get_link_operational_state(links[i].ifindex, &operational_state);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sprintf(devid, "n%i", links[i].ifindex);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder d = udev_device_new_from_device_id(udev, devid);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder link_get_type_string(links[i].iftype, d, &t);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (streq_ptr(operational_state, "routable")) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color_oper = ansi_highlight_green();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder off_color_oper = ansi_highlight_off();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder } else if (streq_ptr(operational_state, "degraded")) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color_oper = ansi_highlight_yellow();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder off_color_oper = ansi_highlight_off();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (streq_ptr(state, "configured")) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color = ansi_highlight_green();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder off_color = ansi_highlight_off();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder } else if (streq_ptr(state, "configuring")) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color = ansi_highlight_yellow();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder off_color = ansi_highlight_off();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder } else if (streq_ptr(state, "failed") ||

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder streq_ptr(state, "linger")) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color = ansi_highlight_red();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder off_color = ansi_highlight_off();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf("%3i %-16s %-10s %s%-11s%s %s%-10s%s\n", links[i].ifindex,

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder links[i].name, strna(t), on_color, strna(state), off_color,

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color_oper, strna(operational_state), off_color_oper);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (arg_legend)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf("\n%i links listed.\n", c);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return 0;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic int dump_addresses(sd_rtnl *rtnl, const char *prefix, int ifindex) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ struct local_address *local = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder int r, n, i;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder n = local_addresses(rtnl, ifindex, &local);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (n < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return n;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder for (i = 0; i < n; i++) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ char *pretty = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = in_addr_to_string(local[i].family, &local[i].address, &pretty);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf("%*s%s\n",

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder (int) strlen(prefix),

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder i == 0 ? prefix : "",

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder pretty);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return 0;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic void dump_list(const char *prefix, char **l) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder char **i;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder STRV_FOREACH(i, l) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf("%*s%s\n",

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder (int) strlen(prefix),

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder i == l ? prefix : "",

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder *i);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroederstatic int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ char *state = NULL, *operational_state = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_udev_device_unref_ struct udev_device *d = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder char devid[2 + DECIMAL_STR_MAX(int)];

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder _cleanup_free_ char *t = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const char *on_color = "", *off_color = "";

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder struct ether_addr e;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder unsigned iftype;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder int r, ifindex;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder bool have_mac;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder uint32_t mtu;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder assert(rtnl);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder assert(udev);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder assert(name);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (safe_atoi(name, &ifindex) >= 0 && ifindex > 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder else {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_create_error(r);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_append_string(req, IFLA_IFNAME, name);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_create_error(r);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_call(rtnl, req, 0, &reply);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder log_error("Failed to query link: %s", strerror(-r));

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return r;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_link_get_ifindex(reply, &ifindex);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_parse_error(r);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_read_string(reply, IFLA_IFNAME, &name);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_parse_error(r);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder r = sd_rtnl_message_link_get_type(reply, &iftype);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (r < 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return rtnl_log_parse_error(r);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder have_mac = sd_rtnl_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (have_mac) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder const uint8_t *p;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder bool all_zeroes = true;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (*p != 0) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder all_zeroes = false;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder break;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (all_zeroes)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder have_mac = false;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_network_get_link_state(ifindex, &state);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_network_get_link_operational_state(ifindex, &operational_state);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_network_get_link_dns(ifindex, &dns);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sd_network_get_link_ntp(ifindex, &ntp);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder sprintf(devid, "n%i", ifindex);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder d = udev_device_new_from_device_id(udev, devid);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder link_get_type_string(iftype, d, &t);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (d) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder driver = udev_device_get_property_value(d, "ID_NET_DRIVER");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder path = udev_device_get_property_value(d, "ID_PATH");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder vendor = udev_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!vendor)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder vendor = udev_device_get_property_value(d, "ID_VENDOR");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!model)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder model = udev_device_get_property_value(d, "ID_MODEL");

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (streq_ptr(operational_state, "routable")) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color = ansi_highlight_green();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder off_color = ansi_highlight_off();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder } else if (streq_ptr(operational_state, "degraded")) {

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color = ansi_highlight_yellow();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder off_color = ansi_highlight_off();

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder }

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf("%s%s%s %i: %s\n", on_color, draw_special_char(DRAW_BLACK_CIRCLE), off_color, ifindex, name);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf(" Type: %s\n"

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder " State: %s%s%s (%s)\n",

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder strna(t),

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder on_color, strna(operational_state), off_color,

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder strna(state));

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (path)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf(" Path: %s\n", path);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (driver)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf(" Driver: %s\n", driver);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (vendor)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf(" Vendor: %s\n", vendor);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (model)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf(" Model: %s\n", model);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (have_mac)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf(" HW Address: %s\n", ether_ntoa(&e));

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (mtu > 0)

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder printf(" MTU: %u\n", mtu);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder dump_addresses(rtnl, " Address: ", ifindex);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!strv_isempty(dns))

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder dump_list(" DNS: ", dns);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder if (!strv_isempty(ntp))

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder dump_list(" NTP: ", ntp);

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder return 0;

81f49ee02aaa3bc870401f8883bf52742eb3ea7aJonathan von Schroeder}

static int link_status(char **args, unsigned n) {

_cleanup_udev_unref_ struct udev *udev = NULL;

_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;

char **name;

int r;

r = sd_rtnl_open(&rtnl, 0);

if (r < 0) {

log_error("Failed to connect to netlink: %s", strerror(-r));

return r;

}

udev = udev_new();

if (!udev) {

log_error("Failed to connect to udev: %m");

return -errno;

}

if (n <= 1 && !arg_all) {

_cleanup_free_ char *operational_state = NULL;

_cleanup_strv_free_ char **dns = NULL, **ntp = NULL;

_cleanup_free_ struct local_address *addresses = NULL;

const char *on_color_oper = "", *off_color_oper = "";

int i, c;

sd_network_get_operational_state(&operational_state);

if (streq_ptr(operational_state, "routable")) {

on_color_oper = ansi_highlight_green();

off_color_oper = ansi_highlight_off();

} else if (streq_ptr(operational_state, "degraded")) {

on_color_oper = ansi_highlight_yellow();

off_color_oper = ansi_highlight_off();

}

printf(" State: %s%s%s\n", on_color_oper, strna(operational_state), off_color_oper);

c = local_addresses(rtnl, 0, &addresses);

for (i = 0; i < c; i++) {

_cleanup_free_ char *pretty = NULL;

r = in_addr_to_string(addresses[i].family, &addresses[i].address, &pretty);

if (r < 0)

return log_oom();

printf("%13s %s\n",

i > 0 ? "" : "Address:", pretty);

}

sd_network_get_dns(&dns);

if (!strv_isempty(dns))

dump_list(" DNS: ", dns);

sd_network_get_dns(&ntp);

if (!strv_isempty(ntp))

dump_list(" NTP: ", ntp);

return 0;

}

pager_open_if_enabled();

if (arg_all) {

_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;

_cleanup_free_ LinkInfo *links = NULL;

int c, i;

r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);

if (r < 0)

return rtnl_log_create_error(r);

r = sd_rtnl_message_request_dump(req, true);

if (r < 0)

return rtnl_log_create_error(r);

r = sd_rtnl_call(rtnl, req, 0, &reply);

if (r < 0) {

log_error("Failed to enumerate links: %s", strerror(-r));

return r;

}

c = decode_and_sort_links(reply, &links);

if (c < 0)

return rtnl_log_parse_error(c);

for (i = 0; i < c; i++) {

if (i > 0)

fputc('\n', stdout);

link_status_one(rtnl, udev, links[i].name);

}

}

STRV_FOREACH(name, args + 1) {

if (name != args+1)

fputc('\n', stdout);

link_status_one(rtnl, udev, *name);

}

return 0;

}

static void help(void) {

printf("%s [OPTIONS...]\n\n"

"Query and control the networking subsystem.\n\n"

" -h --help Show this help\n"

" --version Show package version\n"

" --no-pager Do not pipe output into a pager\n"

" --no-legend Do not show the headers and footers\n"

" -a --all Show status for all links\n\n"

"Commands:\n"

" list List links\n"

" status LINK Show link status\n"

, program_invocation_short_name);

}

static int parse_argv(int argc, char *argv[]) {

enum {

ARG_VERSION = 0x100,

ARG_NO_PAGER,

ARG_NO_LEGEND,

};

static const struct option options[] = {

{ "help", no_argument, NULL, 'h' },

{ "version", no_argument, NULL, ARG_VERSION },

{ "no-pager", no_argument, NULL, ARG_NO_PAGER },

{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },

{ "all", no_argument, NULL, 'a' },

{}

};

int c;

assert(argc >= 0);

assert(argv);

while ((c = getopt_long(argc, argv, "ha", options, NULL)) >= 0) {

switch (c) {

case 'h':

help();

return 0;

case ARG_VERSION:

puts(PACKAGE_STRING);

puts(SYSTEMD_FEATURES);

return 0;

case ARG_NO_PAGER:

arg_no_pager = true;

break;

case ARG_NO_LEGEND:

arg_legend = false;

break;

case 'a':

arg_all = true;

break;

case '?':

return -EINVAL;

default:

assert_not_reached("Unhandled option");

}

}

return 1;

}

static int networkctl_main(int argc, char *argv[]) {

static const struct {

const char* verb;

const enum {

MORE,

LESS,

EQUAL

} argc_cmp;

const int argc;

int (* const dispatch)(char **args, unsigned n);

} verbs[] = {

{ "list", LESS, 1, list_links },

{ "status", MORE, 1, link_status },

};

int left;

unsigned i;

assert(argc >= 0);

assert(argv);

left = argc - optind;

if (left <= 0)

/* Special rule: no arguments means "list" */

i = 0;

else {

if (streq(argv[optind], "help")) {

help();

return 0;

}

for (i = 0; i < ELEMENTSOF(verbs); i++)

if (streq(argv[optind], verbs[i].verb))

break;

if (i >= ELEMENTSOF(verbs)) {

log_error("Unknown operation %s", argv[optind]);

return -EINVAL;

}

}

switch (verbs[i].argc_cmp) {

case EQUAL:

if (left != verbs[i].argc) {

log_error("Invalid number of arguments.");

return -EINVAL;

}

break;

case MORE:

if (left < verbs[i].argc) {

log_error("Too few arguments.");

return -EINVAL;

}

break;

case LESS:

if (left > verbs[i].argc) {

log_error("Too many arguments.");

return -EINVAL;

}

break;

default:

assert_not_reached("Unknown comparison operator.");

}

return verbs[i].dispatch(argv + optind, left);

}

int main(int argc, char* argv[]) {

int r;

log_parse_environment();

log_open();

r = parse_argv(argc, argv);

if (r <= 0)

goto finish;

r = networkctl_main(argc, argv);

finish:

pager_close();

return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;

}