1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #include "sd-network.h"
32 #include "rtnl-util.h"
33 #include "udev-util.h"
34 #include "arphrd-list.h"
35 #include "local-addresses.h"
36 #include "socket-util.h"
38 static bool arg_no_pager = false;
39 static bool arg_legend = true;
40 static bool arg_all = false;
42 static void pager_open_if_enabled(void) {
50 static int link_get_type_string(int iftype, struct udev_device *d, char **ret) {
54 if (iftype == ARPHRD_ETHER && d) {
55 const char *devtype, *id = NULL;
56 /* WLANs have iftype ARPHRD_ETHER, but we want
57 * to show a more useful type string for
60 devtype = udev_device_get_devtype(d);
61 if (streq_ptr(devtype, "wlan"))
63 else if (streq_ptr(devtype, "wwan"))
76 t = arphrd_to_name(iftype);
92 typedef struct LinkInfo {
98 static int link_info_compare(const void *a, const void *b) {
99 const LinkInfo *x = a, *y = b;
101 return x->ifindex - y->ifindex;
104 static int decode_and_sort_links(sd_rtnl_message *m, LinkInfo **ret) {
105 _cleanup_free_ LinkInfo *links = NULL;
106 size_t size = 0, c = 0;
110 for (i = m; i; i = sd_rtnl_message_next(i)) {
116 r = sd_rtnl_message_get_type(i, &type);
120 if (type != RTM_NEWLINK)
123 r = sd_rtnl_message_link_get_ifindex(i, &ifindex);
127 r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &name);
131 r = sd_rtnl_message_link_get_type(i, &iftype);
135 if (!GREEDY_REALLOC(links, size, c+1))
138 links[c].name = name;
139 links[c].ifindex = ifindex;
140 links[c].iftype = iftype;
144 qsort(links, c, sizeof(LinkInfo), link_info_compare);
152 static void operational_state_to_color(const char *state, const char **on, const char **off) {
156 if (streq_ptr(state, "routable")) {
157 *on = ansi_highlight_green();
158 *off = ansi_highlight_off();
159 } else if (streq_ptr(state, "degraded")) {
160 *on = ansi_highlight_yellow();
161 *off = ansi_highlight_off();
166 static void setup_state_to_color(const char *state, const char **on, const char **off) {
170 if (streq_ptr(state, "configured")) {
171 *on = ansi_highlight_green();
172 *off = ansi_highlight_off();
173 } else if (streq_ptr(state, "configuring")) {
174 *on = ansi_highlight_yellow();
175 *off = ansi_highlight_off();
176 } else if (streq_ptr(state, "failed") || streq_ptr(state, "linger")) {
177 *on = ansi_highlight_red();
178 *off = ansi_highlight_off();
183 static int list_links(char **args, unsigned n) {
184 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
185 _cleanup_udev_unref_ struct udev *udev = NULL;
186 _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
187 _cleanup_free_ LinkInfo *links = NULL;
190 pager_open_if_enabled();
192 r = sd_rtnl_open(&rtnl, 0);
194 log_error("Failed to connect to netlink: %s", strerror(-r));
200 log_error("Failed to connect to udev: %m");
204 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
206 return rtnl_log_create_error(r);
208 r = sd_rtnl_message_request_dump(req, true);
210 return rtnl_log_create_error(r);
212 r = sd_rtnl_call(rtnl, req, 0, &reply);
214 log_error("Failed to enumerate links: %s", strerror(-r));
219 printf("%3s %-16s %-18s %-11s %-10s\n", "IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP");
221 c = decode_and_sort_links(reply, &links);
223 return rtnl_log_parse_error(c);
225 for (i = 0; i < c; i++) {
226 _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
227 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
228 const char *on_color_operational, *off_color_operational,
229 *on_color_setup, *off_color_setup;
230 char devid[2 + DECIMAL_STR_MAX(int)];
231 _cleanup_free_ char *t = NULL;
233 sd_network_link_get_operational_state(links[i].ifindex, &operational_state);
234 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
236 sd_network_link_get_setup_state(links[i].ifindex, &setup_state);
237 setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
239 sprintf(devid, "n%i", links[i].ifindex);
240 d = udev_device_new_from_device_id(udev, devid);
242 link_get_type_string(links[i].iftype, d, &t);
244 printf("%3i %-16s %-18s %s%-11s%s %s%-10s%s\n",
245 links[i].ifindex, links[i].name, strna(t),
246 on_color_operational, strna(operational_state), off_color_operational,
247 on_color_setup, strna(setup_state), off_color_setup);
251 printf("\n%i links listed.\n", c);
256 static int dump_addresses(sd_rtnl *rtnl, const char *prefix, int ifindex) {
257 _cleanup_free_ struct local_address *local = NULL;
260 n = local_addresses(rtnl, ifindex, &local);
264 for (i = 0; i < n; i++) {
265 _cleanup_free_ char *pretty = NULL;
267 r = in_addr_to_string(local[i].family, &local[i].address, &pretty);
272 (int) strlen(prefix),
273 i == 0 ? prefix : "",
280 static void dump_list(const char *prefix, char **l) {
285 (int) strlen(prefix),
286 i == l ? prefix : "",
291 static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
292 _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **domains = NULL;
293 _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
294 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
295 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
296 char devid[2 + DECIMAL_STR_MAX(int)];
297 _cleanup_free_ char *t = NULL;
298 const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL;
299 const char *on_color_operational, *off_color_operational,
300 *on_color_setup, *off_color_setup;
311 if (safe_atoi(name, &ifindex) >= 0 && ifindex > 0)
312 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex);
314 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
316 return rtnl_log_create_error(r);
318 r = sd_rtnl_message_append_string(req, IFLA_IFNAME, name);
322 return rtnl_log_create_error(r);
324 r = sd_rtnl_call(rtnl, req, 0, &reply);
326 log_error("Failed to query link: %s", strerror(-r));
330 r = sd_rtnl_message_link_get_ifindex(reply, &ifindex);
332 return rtnl_log_parse_error(r);
334 r = sd_rtnl_message_read_string(reply, IFLA_IFNAME, &name);
336 return rtnl_log_parse_error(r);
338 r = sd_rtnl_message_link_get_type(reply, &iftype);
340 return rtnl_log_parse_error(r);
342 have_mac = sd_rtnl_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0;
346 bool all_zeroes = true;
348 for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++)
358 sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);
360 sd_network_link_get_operational_state(ifindex, &operational_state);
361 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
363 sd_network_link_get_setup_state(ifindex, &setup_state);
364 setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
366 sd_network_link_get_dns(ifindex, &dns);
367 sd_network_link_get_ntp(ifindex, &ntp);
368 sd_network_link_get_domains(ifindex, &domains);
370 sprintf(devid, "n%i", ifindex);
371 d = udev_device_new_from_device_id(udev, devid);
373 link_get_type_string(iftype, d, &t);
376 driver = udev_device_get_property_value(d, "ID_NET_DRIVER");
377 path = udev_device_get_property_value(d, "ID_PATH");
379 vendor = udev_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE");
381 vendor = udev_device_get_property_value(d, "ID_VENDOR");
383 model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");
385 model = udev_device_get_property_value(d, "ID_MODEL");
389 printf("%s%s%s %i: %s\n", on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, ifindex, name);
392 " State: %s%s%s (%s%s%s)\n",
394 on_color_operational, strna(operational_state), off_color_operational,
395 on_color_setup, strna(setup_state), off_color_setup);
398 printf(" Path: %s\n", path);
400 printf(" Driver: %s\n", driver);
402 printf(" Vendor: %s\n", vendor);
404 printf(" Model: %s\n", model);
407 char ea[ETHER_ADDR_TO_STRING_MAX];
408 printf(" HW Address: %s\n", ether_addr_to_string(&e, ea));
412 printf(" MTU: %u\n", mtu);
414 dump_addresses(rtnl, " Address: ", ifindex);
416 if (!strv_isempty(dns))
417 dump_list(" DNS: ", dns);
418 if (!strv_isempty(domains))
419 dump_list(" Domains: ", domains);
420 if (!strv_isempty(ntp))
421 dump_list(" NTP: ", ntp);
426 static int link_status(char **args, unsigned n) {
427 _cleanup_udev_unref_ struct udev *udev = NULL;
428 _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
432 r = sd_rtnl_open(&rtnl, 0);
434 log_error("Failed to connect to netlink: %s", strerror(-r));
440 log_error("Failed to connect to udev: %m");
444 if (n <= 1 && !arg_all) {
445 _cleanup_free_ char *operational_state = NULL;
446 _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
447 _cleanup_free_ struct local_address *addresses = NULL;
448 const char *on_color_operational, *off_color_operational;
451 sd_network_get_operational_state(&operational_state);
452 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
454 printf(" State: %s%s%s\n", on_color_operational, strna(operational_state), off_color_operational);
456 c = local_addresses(rtnl, 0, &addresses);
457 for (i = 0; i < c; i++) {
458 _cleanup_free_ char *pretty = NULL;
460 r = in_addr_to_string(addresses[i].family, &addresses[i].address, &pretty);
465 i > 0 ? "" : "Address:", pretty);
468 sd_network_get_dns(&dns);
469 if (!strv_isempty(dns))
470 dump_list(" DNS: ", dns);
472 sd_network_get_dns(&ntp);
473 if (!strv_isempty(ntp))
474 dump_list(" NTP: ", ntp);
479 pager_open_if_enabled();
482 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
483 _cleanup_free_ LinkInfo *links = NULL;
486 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
488 return rtnl_log_create_error(r);
490 r = sd_rtnl_message_request_dump(req, true);
492 return rtnl_log_create_error(r);
494 r = sd_rtnl_call(rtnl, req, 0, &reply);
496 log_error("Failed to enumerate links: %s", strerror(-r));
500 c = decode_and_sort_links(reply, &links);
502 return rtnl_log_parse_error(c);
504 for (i = 0; i < c; i++) {
508 link_status_one(rtnl, udev, links[i].name);
512 STRV_FOREACH(name, args + 1) {
516 link_status_one(rtnl, udev, *name);
522 static void help(void) {
523 printf("%s [OPTIONS...]\n\n"
524 "Query and control the networking subsystem.\n\n"
525 " -h --help Show this help\n"
526 " --version Show package version\n"
527 " --no-pager Do not pipe output into a pager\n"
528 " --no-legend Do not show the headers and footers\n"
529 " -a --all Show status for all links\n\n"
532 " status LINK Show link status\n"
533 , program_invocation_short_name);
536 static int parse_argv(int argc, char *argv[]) {
544 static const struct option options[] = {
545 { "help", no_argument, NULL, 'h' },
546 { "version", no_argument, NULL, ARG_VERSION },
547 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
548 { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
549 { "all", no_argument, NULL, 'a' },
558 while ((c = getopt_long(argc, argv, "ha", options, NULL)) >= 0) {
567 puts(PACKAGE_STRING);
568 puts(SYSTEMD_FEATURES);
587 assert_not_reached("Unhandled option");
594 static int networkctl_main(int argc, char *argv[]) {
596 static const struct {
604 int (* const dispatch)(char **args, unsigned n);
606 { "list", LESS, 1, list_links },
607 { "status", MORE, 1, link_status },
616 left = argc - optind;
619 /* Special rule: no arguments means "list" */
622 if (streq(argv[optind], "help")) {
627 for (i = 0; i < ELEMENTSOF(verbs); i++)
628 if (streq(argv[optind], verbs[i].verb))
631 if (i >= ELEMENTSOF(verbs)) {
632 log_error("Unknown operation %s", argv[optind]);
637 switch (verbs[i].argc_cmp) {
640 if (left != verbs[i].argc) {
641 log_error("Invalid number of arguments.");
648 if (left < verbs[i].argc) {
649 log_error("Too few arguments.");
656 if (left > verbs[i].argc) {
657 log_error("Too many arguments.");
664 assert_not_reached("Unknown comparison operator.");
667 return verbs[i].dispatch(argv + optind, left);
670 int main(int argc, char* argv[]) {
673 log_parse_environment();
676 r = parse_argv(argc, argv);
680 r = networkctl_main(argc, argv);
685 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;