4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering#include <stdbool.h>

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering#include <getopt.h>

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering#include "sd-network.h"

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering#include "sd-rtnl.h"

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering#include "libudev.h"

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering#include "build.h"

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering#include "util.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include "pager.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include "rtnl-util.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include "udev-util.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include "arphrd-list.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include "local-addresses.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include "socket-util.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include "ether-addr-util.h"

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringstatic bool arg_no_pager = false;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringstatic bool arg_legend = true;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringstatic bool arg_all = false;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringstatic void pager_open_if_enabled(void) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (arg_no_pager)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering pager_open(false);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering}

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringstatic int link_get_type_string(int iftype, struct udev_device *d, char **ret) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering const char *t;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering char *p;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (iftype == ARPHRD_ETHER && d) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering const char *devtype, *id = NULL;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering /* WLANs have iftype ARPHRD_ETHER, but we want

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering devtype = udev_device_get_devtype(d);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (streq_ptr(devtype, "wlan"))

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering id = "wlan";

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering else if (streq_ptr(devtype, "wwan"))

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering id = "wwan";

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (id) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering p = strdup(id);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (!p)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return -ENOMEM;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering *ret = p;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return 1;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering }

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering }

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering t = arphrd_to_name(iftype);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (!t) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *ret = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return 0;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering }

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering p = strdup(t);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (!p)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return -ENOMEM;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering ascii_strlower(p);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *ret = p;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return 0;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering}

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poetteringtypedef struct LinkInfo {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering const char *name;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering int ifindex;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering unsigned iftype;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering} LinkInfo;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poetteringstatic int link_info_compare(const void *a, const void *b) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering const LinkInfo *x = a, *y = b;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return x->ifindex - y->ifindex;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering}

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poetteringstatic int decode_and_sort_links(sd_rtnl_message *m, LinkInfo **ret) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering _cleanup_free_ LinkInfo *links = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering size_t size = 0, c = 0;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering sd_rtnl_message *i;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering int r;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering for (i = m; i; i = sd_rtnl_message_next(i)) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering const char *name;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering unsigned iftype;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering uint16_t type;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering int ifindex;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering r = sd_rtnl_message_get_type(i, &type);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (r < 0)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return r;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (type != RTM_NEWLINK)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering continue;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering r = sd_rtnl_message_link_get_ifindex(i, &ifindex);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (r < 0)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return r;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &name);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (r < 0)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return r;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering r = sd_rtnl_message_link_get_type(i, &iftype);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (r < 0)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return r;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (!GREEDY_REALLOC(links, size, c+1))

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return -ENOMEM;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering links[c].name = name;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering links[c].ifindex = ifindex;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering links[c].iftype = iftype;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering c++;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering qsort_safe(links, c, sizeof(LinkInfo), link_info_compare);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *ret = links;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering links = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return (int) c;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering}

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringstatic void operational_state_to_color(const char *state, const char **on, const char **off) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering assert(on);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering assert(off);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (streq_ptr(state, "routable")) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *on = ansi_highlight_green();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *off = ansi_highlight_off();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering } else if (streq_ptr(state, "degraded")) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *on = ansi_highlight_yellow();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *off = ansi_highlight_off();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering } else

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *on = *off = "";

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering}

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poetteringstatic void setup_state_to_color(const char *state, const char **on, const char **off) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering assert(on);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering assert(off);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (streq_ptr(state, "configured")) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *on = ansi_highlight_green();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *off = ansi_highlight_off();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering } else if (streq_ptr(state, "configuring")) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering *on = ansi_highlight_yellow();

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering *off = ansi_highlight_off();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering } else if (streq_ptr(state, "failed") || streq_ptr(state, "linger")) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *on = ansi_highlight_red();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *off = ansi_highlight_off();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering } else

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *on = *off = "";

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering}

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poetteringstatic int list_links(char **args, unsigned n) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering _cleanup_udev_unref_ struct udev *udev = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering _cleanup_free_ LinkInfo *links = NULL;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering int r, c, i;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering pager_open_if_enabled();

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_open(&rtnl, 0);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return log_error_errno(r, "Failed to connect to netlink: %m");

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering udev = udev_new();

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (!udev)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return log_error_errno(errno, "Failed to connect to udev: %m");

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return rtnl_log_create_error(r);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_request_dump(req, true);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return rtnl_log_create_error(r);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering r = sd_rtnl_call(rtnl, req, 0, &reply);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (r < 0)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return log_error_errno(r, "Failed to enumerate links: %m");

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (arg_legend)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering printf("%3s %-16s %-18s %-11s %-10s\n", "IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP");

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering c = decode_and_sort_links(reply, &links);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (c < 0)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return rtnl_log_parse_error(c);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering for (i = 0; i < c; i++) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering _cleanup_udev_device_unref_ struct udev_device *d = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering const char *on_color_operational, *off_color_operational,

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering *on_color_setup, *off_color_setup;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering char devid[2 + DECIMAL_STR_MAX(int)];

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering _cleanup_free_ char *t = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering sd_network_link_get_operational_state(links[i].ifindex, &operational_state);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering sd_network_link_get_setup_state(links[i].ifindex, &setup_state);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering sprintf(devid, "n%i", links[i].ifindex);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering d = udev_device_new_from_device_id(udev, devid);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering link_get_type_string(links[i].iftype, d, &t);

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering printf("%3i %-16s %-18s %s%-11s%s %s%-10s%s\n",

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering links[i].ifindex, links[i].name, strna(t),

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering on_color_operational, strna(operational_state), off_color_operational,

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering on_color_setup, strna(setup_state), off_color_setup);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (arg_legend)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering printf("\n%i links listed.\n", c);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return 0;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering}

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringstatic int ieee_oui(struct udev_hwdb *hwdb, struct ether_addr *mac, char **ret) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering struct udev_list_entry *entry;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering char *description;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering char str[strlen("OUI:XXYYXXYYXXYY") + 1];

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering /* skip commonly misused 00:00:00 (Xerox) prefix */

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (memcmp(mac, "\0\0\0", 3) == 0)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return -EINVAL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering snprintf(str, sizeof(str), "OUI:" ETHER_ADDR_FORMAT_STR, ETHER_ADDR_FORMAT_VAL(*mac));

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, str, 0))

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (strcmp(udev_list_entry_get_name(entry), "ID_OUI_FROM_DATABASE") == 0) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering description = strdup(udev_list_entry_get_value(entry));

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (!description)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return -ENOMEM;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering *ret = description;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return 0;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering return -ENODATA;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering}

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poetteringstatic int get_gateway_description(sd_rtnl *rtnl, struct udev_hwdb *hwdb, int ifindex, int family,

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering union in_addr_union *gateway, char **gateway_description) {

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering sd_rtnl_message *m;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering int r;

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering assert(rtnl);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering assert(ifindex >= 0);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering assert(family == AF_INET || family == AF_INET6);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering assert(gateway);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering assert(gateway_description);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_GETNEIGH, ifindex, family);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return r;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_request_dump(req, true);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return r;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_call(rtnl, req, 0, &reply);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return r;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering for (m = reply; m; m = sd_rtnl_message_next(m)) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering union in_addr_union gw = {};

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering struct ether_addr mac = {};

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering uint16_t type;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering int ifi, fam;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_get_errno(m);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0) {

eaf73b061604c028aa28f960870a9b46aab2f76aLuke Shumaker log_error_errno(r, "got error: %m");

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_get_type(m, &type);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering log_error_errno(r, "could not get type: %m");

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (type != RTM_NEWNEIGH) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering log_error("type is not RTM_NEWNEIGH");

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_neigh_get_family(m, &fam);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering log_error_errno(r, "could not get family: %m");

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (fam != family) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering log_error("family is not correct");

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = sd_rtnl_message_neigh_get_ifindex(m, &ifi);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering log_error_errno(r, "could not get ifindex: %m");

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering if (ifindex > 0 && ifi != ifindex)

4ba93280223ceb5de1bcedb196c38252f334521aLennart Poettering continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering switch (fam) {

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker case AF_INET:

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker r = sd_rtnl_message_read_in_addr(m, NDA_DST, &gw.in);

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker if (r < 0)

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering break;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering case AF_INET6:

eaf73b061604c028aa28f960870a9b46aab2f76aLuke Shumaker r = sd_rtnl_message_read_in6_addr(m, NDA_DST, &gw.in6);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering continue;

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker break;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering default:

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker continue;

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker }

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker if (!in_addr_equal(fam, &gw, gateway))

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker continue;

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker r = sd_rtnl_message_read_ether_addr(m, NDA_LLADDR, &mac);

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker if (r < 0)

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker continue;

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker r = ieee_oui(hwdb, &mac, gateway_description);

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker if (r < 0)

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker continue;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return 0;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering }

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker return -ENODATA;

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker}

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumaker

90d14d2015dda79c7b465b74dd3aaf2dfc25d43cLuke Shumakerstatic int dump_gateways(sd_rtnl *rtnl, struct udev_hwdb *hwdb, const char *prefix, int ifindex) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering sd_rtnl_message *m;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering bool first = true;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering int r;

assert(rtnl);

assert(ifindex >= 0);

r = sd_rtnl_message_new_route(rtnl, &req, RTM_GETROUTE, AF_UNSPEC, RTPROT_UNSPEC);

if (r < 0)

return r;

r = sd_rtnl_message_request_dump(req, true);

if (r < 0)

return r;

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

if (r < 0)

return r;

for (m = reply; m; m = sd_rtnl_message_next(m)) {

_cleanup_free_ char *gateway = NULL, *gateway_description = NULL;

union in_addr_union gw = {};

uint16_t type;

uint32_t ifi;

int family;

r = sd_rtnl_message_get_errno(m);

if (r < 0) {

log_error_errno(r, "got error: %m");

continue;

}

r = sd_rtnl_message_get_type(m, &type);

if (r < 0) {

log_error_errno(r, "could not get type: %m");

continue;

}

if (type != RTM_NEWROUTE) {

log_error("type is not RTM_NEWROUTE");

continue;

}

r = sd_rtnl_message_route_get_family(m, &family);

if (r < 0) {

log_error_errno(r, "could not get family: %m");

continue;

}

r = sd_rtnl_message_read_u32(m, RTA_OIF, &ifi);

if (r < 0) {

log_error_errno(r, "could not get RTA_OIF: %m");

continue;

}

if (ifindex > 0 && ifi != (unsigned) ifindex)

continue;

switch (family) {

case AF_INET:

r = sd_rtnl_message_read_in_addr(m, RTA_GATEWAY, &gw.in);

if (r < 0)

continue;

r = sd_rtnl_message_read_in_addr(m, RTA_DST, NULL);

if (r >= 0)

continue;

r = sd_rtnl_message_read_in_addr(m, RTA_SRC, NULL);

if (r >= 0)

continue;

break;

case AF_INET6:

r = sd_rtnl_message_read_in6_addr(m, RTA_GATEWAY, &gw.in6);

if (r < 0)

continue;

r = sd_rtnl_message_read_in6_addr(m, RTA_DST, NULL);

if (r >= 0)

continue;

r = sd_rtnl_message_read_in6_addr(m, RTA_SRC, NULL);

if (r >= 0)

continue;

break;

default:

continue;

}

r = in_addr_to_string(family, &gw, &gateway);

if (r < 0)

continue;

r = get_gateway_description(rtnl, hwdb, ifi, family, &gw, &gateway_description);

if (r < 0)

log_debug("could not get description of gateway: %s", strerror(-r));

if (gateway_description)

printf("%*s%s (%s)\n",

(int) strlen(prefix),

first ? prefix : "",

gateway, gateway_description);

else

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

(int) strlen(prefix),

first ? prefix : "",

gateway);

first = false;

}

return 0;

}

static int dump_addresses(sd_rtnl *rtnl, const char *prefix, int ifindex) {

_cleanup_free_ struct local_address *local = NULL;

int r, n, i;

n = local_addresses(rtnl, ifindex, AF_UNSPEC, &local);

if (n < 0)

return n;

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

_cleanup_free_ char *pretty = NULL;

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

if (r < 0)

return r;

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

(int) strlen(prefix),

i == 0 ? prefix : "",

pretty);

}

return 0;

}

static void dump_list(const char *prefix, char **l) {

char **i;

STRV_FOREACH(i, l) {

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

(int) strlen(prefix),

i == l ? prefix : "",

*i);

}

}

static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {

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

_cleanup_free_ char *setup_state = NULL, *operational_state = NULL;

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

_cleanup_udev_device_unref_ struct udev_device *d = NULL;

_cleanup_udev_hwdb_unref_ struct udev_hwdb *hwdb = NULL;

char devid[2 + DECIMAL_STR_MAX(int)];

_cleanup_free_ char *t = NULL, *network = NULL;

const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL, *link = NULL;

const char *on_color_operational, *off_color_operational,

*on_color_setup, *off_color_setup;

struct ether_addr e;

unsigned iftype;

int r, ifindex;

bool have_mac;

uint32_t mtu;

assert(rtnl);

assert(udev);

assert(name);

if (safe_atoi(name, &ifindex) >= 0 && ifindex > 0)

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

else {

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

if (r < 0)

return rtnl_log_create_error(r);

r = sd_rtnl_message_append_string(req, IFLA_IFNAME, name);

}

if (r < 0)

return rtnl_log_create_error(r);

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

if (r < 0)

return log_error_errno(r, "Failed to query link: %m");

r = sd_rtnl_message_link_get_ifindex(reply, &ifindex);

if (r < 0)

return rtnl_log_parse_error(r);

r = sd_rtnl_message_read_string(reply, IFLA_IFNAME, &name);

if (r < 0)

return rtnl_log_parse_error(r);

r = sd_rtnl_message_link_get_type(reply, &iftype);

if (r < 0)

return rtnl_log_parse_error(r);

have_mac = sd_rtnl_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0;

if (have_mac) {

const uint8_t *p;

bool all_zeroes = true;

for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++)

if (*p != 0) {

all_zeroes = false;

break;

}

if (all_zeroes)

have_mac = false;

}

sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);

sd_network_link_get_operational_state(ifindex, &operational_state);

operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);

sd_network_link_get_setup_state(ifindex, &setup_state);

setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);

sd_network_link_get_dns(ifindex, &dns);

sd_network_link_get_ntp(ifindex, &ntp);

sd_network_link_get_domains(ifindex, &domains);

r = sd_network_link_get_wildcard_domain(ifindex);

if (r > 0) {

char *wildcard;

wildcard = strdup("*");

if (!wildcard)

return log_oom();

if (strv_consume(&domains, wildcard) < 0)

return log_oom();

}

sprintf(devid, "n%i", ifindex);

d = udev_device_new_from_device_id(udev, devid);

link_get_type_string(iftype, d, &t);

if (d) {

link = udev_device_get_property_value(d, "ID_NET_LINK_FILE");

driver = udev_device_get_property_value(d, "ID_NET_DRIVER");

path = udev_device_get_property_value(d, "ID_PATH");

vendor = udev_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE");

if (!vendor)

vendor = udev_device_get_property_value(d, "ID_VENDOR");

model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");

if (!model)

model = udev_device_get_property_value(d, "ID_MODEL");

}

sd_network_link_get_network_file(ifindex, &network);

printf("%s%s%s %i: %s\n", on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, ifindex, name);

printf(" Link File: %s\n"

"Network File: %s\n"

" Type: %s\n"

" State: %s%s%s (%s%s%s)\n",

strna(link),

strna(network),

strna(t),

on_color_operational, strna(operational_state), off_color_operational,

on_color_setup, strna(setup_state), off_color_setup);

if (path)

printf(" Path: %s\n", path);

if (driver)

printf(" Driver: %s\n", driver);

if (vendor)

printf(" Vendor: %s\n", vendor);

if (model)

printf(" Model: %s\n", model);

if (have_mac) {

char ea[ETHER_ADDR_TO_STRING_MAX];

printf(" HW Address: %s\n", ether_addr_to_string(&e, ea));

}

if (mtu > 0)

printf(" MTU: %u\n", mtu);

hwdb = udev_hwdb_new(udev);

dump_gateways(rtnl, hwdb, " Gateway: ", ifindex);

dump_addresses(rtnl, " Address: ", ifindex);

if (!strv_isempty(dns))

dump_list(" DNS: ", dns);

if (!strv_isempty(domains))

dump_list(" Domain: ", domains);

if (!strv_isempty(ntp))

dump_list(" NTP: ", ntp);

return 0;

}

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)

return log_error_errno(r, "Failed to connect to netlink: %m");

udev = udev_new();

if (!udev)

return log_error_errno(errno, "Failed to connect to udev: %m");

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

_cleanup_free_ char *operational_state = NULL;

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

_cleanup_free_ struct local_address *addresses = NULL;

const char *on_color_operational, *off_color_operational;

int i, c;

sd_network_get_operational_state(&operational_state);

operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);

printf(" State: %s%s%s\n", on_color_operational, strna(operational_state), off_color_operational);

c = local_addresses(rtnl, 0, AF_UNSPEC, &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_domains(&domains);

if (!strv_isempty(domains))

dump_list(" Domain: ", domains);

sd_network_get_ntp(&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)

return log_error_errno(r, "Failed to enumerate links: %m");

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;

}