51846950b4b1f31342008cf17f667859a5f21949Christian Maeder

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc#include <stdbool.h>

6342ef8f9f785e79c91f217c30b3ba2b6fa0ad4fEugen Kuksa#include <getopt.h>

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

de03ed90ff6efbbc4751301bcf6b50d9790c1afbKarl Luc#include "sd-network.h"

52c81e62d4a3797b926fb3392369b45a9fef336cSoeren D. Schulze#include "sd-rtnl.h"

52c81e62d4a3797b926fb3392369b45a9fef336cSoeren D. Schulze#include "libudev.h"

66977d201b3ff7ee9c1f992c0f3f701b69eac2c9Karl Luc

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov#include "build.h"

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov#include "util.h"

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov#include "pager.h"

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa#include "rtnl-util.h"

a35bacbc16daf5c10f9accfdfadc4971e9d6f648Iulia Ignatov#include "udev-util.h"

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder#include "arphrd-list.h"

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder#include "local-addresses.h"

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder#include "socket-util.h"

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maederstatic bool arg_no_pager = false;

51846950b4b1f31342008cf17f667859a5f21949Christian Maederstatic bool arg_legend = true;

51846950b4b1f31342008cf17f667859a5f21949Christian Maederstatic bool arg_all = false;

51846950b4b1f31342008cf17f667859a5f21949Christian Maeder

3831cf8a3b0ea144a80d13fe0314cc2752e32107Christian Maederstatic void pager_open_if_enabled(void) {

51846950b4b1f31342008cf17f667859a5f21949Christian Maeder

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc if (arg_no_pager)

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc return;

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc pager_open(false);

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc}

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

75067b1beba1380cde707c30e7fc050d86f6927fKarl Lucstatic int link_get_type_string(int iftype, struct udev_device *d, char **ret) {

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc const char *t;

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc char *p;

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc

1ea7fb6b0f66210bc0d3cb995f1b655277b33884Eugen Kuksa if (iftype == ARPHRD_ETHER && d) {

d6ce032cac688f3698be7133d27f53d3967e6749Christian Maeder const char *devtype, *id = NULL;

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc /* WLANs have iftype ARPHRD_ETHER, but we want

551f1476dea3f969775527cb15fd512e86279307Karl Luc

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder devtype = udev_device_get_devtype(d);

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc if (streq_ptr(devtype, "wlan"))

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc id = "wlan";

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc else if (streq_ptr(devtype, "wwan"))

59ec6aa4da4c93d0d4ef53ed74fdf866d0654539Eugen Kuksa id = "wwan";

59ec6aa4da4c93d0d4ef53ed74fdf866d0654539Eugen Kuksa

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc if (id) {

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder p = strdup(id);

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder if (!p)

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder return -ENOMEM;

e16b3696b2c173aac14200321868ed81b8f7dc69Christian Maeder

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc *ret = p;

c51d1f5ff88cce030fe543e271ca6b85625b70d8Karl Luc return 1;

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa }

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc }

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

0b282d1269b8f9a658f7ce9090575ba1b00e8d66Christian Maeder t = arphrd_to_name(iftype);

0b282d1269b8f9a658f7ce9090575ba1b00e8d66Christian Maeder if (!t) {

0b282d1269b8f9a658f7ce9090575ba1b00e8d66Christian Maeder *ret = NULL;

0b282d1269b8f9a658f7ce9090575ba1b00e8d66Christian Maeder return 0;

52c81e62d4a3797b926fb3392369b45a9fef336cSoeren D. Schulze }

52c81e62d4a3797b926fb3392369b45a9fef336cSoeren D. Schulze

51846950b4b1f31342008cf17f667859a5f21949Christian Maeder p = strdup(t);

3831cf8a3b0ea144a80d13fe0314cc2752e32107Christian Maeder if (!p)

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa return -ENOMEM;

c51d1f5ff88cce030fe543e271ca6b85625b70d8Karl Luc

1ea7fb6b0f66210bc0d3cb995f1b655277b33884Eugen Kuksa ascii_strlower(p);

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa *ret = p;

2c10bceb28a74fc291959697e023f22a66753655Eugen Kuksa

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc return 0;

d6ce032cac688f3698be7133d27f53d3967e6749Christian Maeder}

de03ed90ff6efbbc4751301bcf6b50d9790c1afbKarl Luc

de03ed90ff6efbbc4751301bcf6b50d9790c1afbKarl Luctypedef struct LinkInfo {

cacbb5e3100fb85d23d1614cace3a8662801f2e6Eugen Kuksa const char *name;

551f1476dea3f969775527cb15fd512e86279307Karl Luc int ifindex;

5e6915f767bd46767306abbfbb39ebcbc10a2a33Christian Maeder unsigned iftype;

7b1111ca3b126f71cce47e60ce4b56e6f92422e9Karl Luc} LinkInfo;

7b1111ca3b126f71cce47e60ce4b56e6f92422e9Karl Luc

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatovstatic int link_info_compare(const void *a, const void *b) {

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov const LinkInfo *x = a, *y = b;

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov return x->ifindex - y->ifindex;

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov}

0ac66bed6456d7900a657269e36107ca7bec4756Iulia Ignatov

51846950b4b1f31342008cf17f667859a5f21949Christian Maederstatic int decode_and_sort_links(sd_rtnl_message *m, LinkInfo **ret) {

3831cf8a3b0ea144a80d13fe0314cc2752e32107Christian Maeder _cleanup_free_ LinkInfo *links = NULL;

c51d1f5ff88cce030fe543e271ca6b85625b70d8Karl Luc size_t size = 0, c = 0;

1ea7fb6b0f66210bc0d3cb995f1b655277b33884Eugen Kuksa sd_rtnl_message *i;

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa int r;

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

de03ed90ff6efbbc4751301bcf6b50d9790c1afbKarl Luc for (i = m; i; i = sd_rtnl_message_next(i)) {

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc const char *name;

de03ed90ff6efbbc4751301bcf6b50d9790c1afbKarl Luc unsigned iftype;

de03ed90ff6efbbc4751301bcf6b50d9790c1afbKarl Luc uint16_t type;

7165a916d2fa1bf87c4741ec63b253413eebbf69Karl Luc int ifindex;

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder r = sd_rtnl_message_get_type(i, &type);

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder if (r < 0)

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder return r;

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc if (type != RTM_NEWLINK)

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc continue;

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

c96c73387a0c41614ba325f737edad6abbf07e79Eugen Kuksa r = sd_rtnl_message_link_get_ifindex(i, &ifindex);

c96c73387a0c41614ba325f737edad6abbf07e79Eugen Kuksa if (r < 0)

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder return r;

1da120eb84c9d3ed16f64d6defd9bc30569dc45bChristian Maeder

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &name);

9e5811a3323b00d6ff8d3fe91a185de1ab31150bChristian Maeder if (r < 0)

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc return r;

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc r = sd_rtnl_message_link_get_type(i, &iftype);

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc if (r < 0)

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc return r;

75067b1beba1380cde707c30e7fc050d86f6927fKarl Luc

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa if (!GREEDY_REALLOC(links, size, c+1))

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa return -ENOMEM;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa links[c].name = name;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa links[c].ifindex = ifindex;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa links[c].iftype = iftype;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa c++;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa }

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa qsort_safe(links, c, sizeof(LinkInfo), link_info_compare);

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *ret = links;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa links = NULL;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa return (int) c;

1ea7fb6b0f66210bc0d3cb995f1b655277b33884Eugen Kuksa}

1ea7fb6b0f66210bc0d3cb995f1b655277b33884Eugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksastatic void operational_state_to_color(const char *state, const char **on, const char **off) {

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa assert(on);

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa assert(off);

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa if (streq_ptr(state, "routable")) {

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *on = ansi_highlight_green();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *off = ansi_highlight_off();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa } else if (streq_ptr(state, "degraded")) {

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *on = ansi_highlight_yellow();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *off = ansi_highlight_off();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa } else

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *on = *off = "";

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa}

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksastatic void setup_state_to_color(const char *state, const char **on, const char **off) {

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa assert(on);

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa assert(off);

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa if (streq_ptr(state, "configured")) {

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *on = ansi_highlight_green();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *off = ansi_highlight_off();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa } else if (streq_ptr(state, "configuring")) {

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *on = ansi_highlight_yellow();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *off = ansi_highlight_off();

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa } else if (streq_ptr(state, "failed") || streq_ptr(state, "linger")) {

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa *on = ansi_highlight_red();

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa *off = ansi_highlight_off();

037be4e5b0e867dd148db2ea89640d8edf009053Eugen Kuksa } else

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa *on = *off = "";

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa}

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksastatic int list_links(char **args, unsigned n) {

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa _cleanup_udev_unref_ struct udev *udev = NULL;

99a1bfbb82c875580410b4745617fea2297fdc2bEugen Kuksa _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;

5e6915f767bd46767306abbfbb39ebcbc10a2a33Christian Maeder _cleanup_free_ LinkInfo *links = NULL;

int r, c, i;

pager_open_if_enabled();

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");

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");

if (arg_legend)

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

c = decode_and_sort_links(reply, &links);

if (c < 0)

return rtnl_log_parse_error(c);

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

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

_cleanup_udev_device_unref_ struct udev_device *d = NULL;

const char *on_color_operational, *off_color_operational,

*on_color_setup, *off_color_setup;

char devid[2 + DECIMAL_STR_MAX(int)];

_cleanup_free_ char *t = NULL;

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

operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);

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

setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);

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

d = udev_device_new_from_device_id(udev, devid);

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

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

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

on_color_operational, strna(operational_state), off_color_operational,

on_color_setup, strna(setup_state), off_color_setup);

}

if (arg_legend)

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

return 0;

}

static int ieee_oui(struct udev_hwdb *hwdb, struct ether_addr *mac, char **ret) {

struct udev_list_entry *entry;

char *description;

char str[32];

/* skip commonly misused 00:00:00 (Xerox) prefix */

if (memcmp(mac, "\0\0\0", 3) == 0)

return -EINVAL;

snprintf(str, sizeof(str), "OUI:%02X%02X%02X%02X%02X%02X", mac->ether_addr_octet[0], mac->ether_addr_octet[1], mac->ether_addr_octet[2],

mac->ether_addr_octet[3], mac->ether_addr_octet[4], mac->ether_addr_octet[5]);

udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, str, 0))

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

description = strdup(udev_list_entry_get_value(entry));

if (!description)

return -ENOMEM;

*ret = description;

return 0;

}

return -ENODATA;

}

static int get_gateway_description(sd_rtnl *rtnl, struct udev_hwdb *hwdb, int ifindex, int family,

union in_addr_union *gateway, char **gateway_description) {

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

sd_rtnl_message *m;

int r;

assert(rtnl);

assert(ifindex >= 0);

assert(family == AF_INET || family == AF_INET6);

assert(gateway);

assert(gateway_description);

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

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)) {

union in_addr_union gw = {};

struct ether_addr mac = {};

uint16_t type;

int ifi, fam;

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_NEWNEIGH) {

log_error("type is not RTM_NEWNEIGH");

continue;

}

r = sd_rtnl_message_neigh_get_family(m, &fam);

if (r < 0) {

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

continue;

}

if (fam != family) {

log_error("family is not correct");

continue;

}

r = sd_rtnl_message_neigh_get_ifindex(m, &ifi);

if (r < 0) {

log_error_errno(r, "colud not get ifindex: %m");

continue;

}

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

continue;

switch (fam) {

case AF_INET:

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

if (r < 0)

continue;

break;

case AF_INET6:

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

if (r < 0)

continue;

break;

default:

continue;

}

if (!in_addr_equal(fam, &gw, gateway))

continue;

r = sd_rtnl_message_read_ether_addr(m, NDA_LLADDR, &mac);

if (r < 0)

continue;

r = ieee_oui(hwdb, &mac, gateway_description);

if (r < 0)

continue;

return 0;

}

return -ENODATA;

}

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

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

sd_rtnl_message *m;

bool first = true;

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, "colud 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, &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, *gateway = NULL, *gateway_description = NULL,

*gateway6 = NULL, *gateway6_description = 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, &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;

}