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"
37 static bool arg_no_pager = false;
38 static bool arg_legend = true;
39 static bool arg_all = false;
41 static void pager_open_if_enabled(void) {
49 static int link_get_type_string(int iftype, struct udev_device *d, char **ret) {
53 if (iftype == ARPHRD_ETHER && d) {
54 const char *devtype, *id = NULL;
55 /* WLANs have iftype ARPHRD_ETHER, but we want
56 * to show a more useful type string for
59 devtype = udev_device_get_devtype(d);
60 if (streq_ptr(devtype, "wlan"))
62 else if (streq_ptr(devtype, "wwan"))
75 t = arphrd_to_name(iftype);
91 typedef struct LinkInfo {
97 static int link_info_compare(const void *a, const void *b) {
98 const LinkInfo *x = a, *y = b;
100 return x->ifindex - y->ifindex;
103 static int decode_and_sort_links(sd_rtnl_message *m, LinkInfo **ret) {
104 _cleanup_free_ LinkInfo *links = NULL;
105 size_t size = 0, c = 0;
109 for (i = m; i; i = sd_rtnl_message_next(i)) {
115 r = sd_rtnl_message_get_type(i, &type);
119 if (type != RTM_NEWLINK)
122 r = sd_rtnl_message_link_get_ifindex(i, &ifindex);
126 r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &name);
130 r = sd_rtnl_message_link_get_type(i, &iftype);
134 if (!GREEDY_REALLOC(links, size, c+1))
137 links[c].name = name;
138 links[c].ifindex = ifindex;
139 links[c].iftype = iftype;
143 qsort(links, c, sizeof(LinkInfo), link_info_compare);
151 static void operational_state_to_color(const char *state, const char **on, const char **off) {
155 if (streq_ptr(state, "routable")) {
156 *on = ansi_highlight_green();
157 *off = ansi_highlight_off();
158 } else if (streq_ptr(state, "degraded")) {
159 *on = ansi_highlight_yellow();
160 *off = ansi_highlight_off();
165 static void setup_state_to_color(const char *state, const char **on, const char **off) {
169 if (streq_ptr(state, "configured")) {
170 *on = ansi_highlight_green();
171 *off = ansi_highlight_off();
172 } else if (streq_ptr(state, "configuring")) {
173 *on = ansi_highlight_yellow();
174 *off = ansi_highlight_off();
175 } else if (streq_ptr(state, "failed") || streq_ptr(state, "linger")) {
176 *on = ansi_highlight_red();
177 *off = ansi_highlight_off();
182 static int list_links(char **args, unsigned n) {
183 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
184 _cleanup_udev_unref_ struct udev *udev = NULL;
185 _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
186 _cleanup_free_ LinkInfo *links = NULL;
189 pager_open_if_enabled();
191 r = sd_rtnl_open(&rtnl, 0);
193 log_error("Failed to connect to netlink: %s", strerror(-r));
199 log_error("Failed to connect to udev: %m");
203 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
205 return rtnl_log_create_error(r);
207 r = sd_rtnl_message_request_dump(req, true);
209 return rtnl_log_create_error(r);
211 r = sd_rtnl_call(rtnl, req, 0, &reply);
213 log_error("Failed to enumerate links: %s", strerror(-r));
218 printf("%3s %-16s %-10s %-11s %-10s\n", "IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP");
220 c = decode_and_sort_links(reply, &links);
222 return rtnl_log_parse_error(c);
224 for (i = 0; i < c; i++) {
225 _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
226 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
227 const char *on_color_operational, *off_color_operational,
228 *on_color_setup, *off_color_setup;
229 char devid[2 + DECIMAL_STR_MAX(int)];
230 _cleanup_free_ char *t = NULL;
232 sd_network_link_get_operational_state(links[i].ifindex, &operational_state);
233 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
235 sd_network_link_get_setup_state(links[i].ifindex, &setup_state);
236 setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
238 sprintf(devid, "n%i", links[i].ifindex);
239 d = udev_device_new_from_device_id(udev, devid);
241 link_get_type_string(links[i].iftype, d, &t);
243 printf("%3i %-16s %-10s %s%-11s%s %s%-10s%s\n",
244 links[i].ifindex, links[i].name, strna(t),
245 on_color_operational, strna(operational_state), off_color_operational,
246 on_color_setup, strna(setup_state), off_color_setup);
250 printf("\n%i links listed.\n", c);
255 static int dump_addresses(sd_rtnl *rtnl, const char *prefix, int ifindex) {
256 _cleanup_free_ struct local_address *local = NULL;
259 n = local_addresses(rtnl, ifindex, &local);
263 for (i = 0; i < n; i++) {
264 _cleanup_free_ char *pretty = NULL;
266 r = in_addr_to_string(local[i].family, &local[i].address, &pretty);
271 (int) strlen(prefix),
272 i == 0 ? prefix : "",
279 static void dump_list(const char *prefix, char **l) {
284 (int) strlen(prefix),
285 i == l ? prefix : "",
290 static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
291 _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
292 _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
293 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
294 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
295 char devid[2 + DECIMAL_STR_MAX(int)];
296 _cleanup_free_ char *t = NULL;
297 const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL;
298 const char *on_color_operational, *off_color_operational,
299 *on_color_setup, *off_color_setup;
310 if (safe_atoi(name, &ifindex) >= 0 && ifindex > 0)
311 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex);
313 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
315 return rtnl_log_create_error(r);
317 r = sd_rtnl_message_append_string(req, IFLA_IFNAME, name);
321 return rtnl_log_create_error(r);
323 r = sd_rtnl_call(rtnl, req, 0, &reply);
325 log_error("Failed to query link: %s", strerror(-r));
329 r = sd_rtnl_message_link_get_ifindex(reply, &ifindex);
331 return rtnl_log_parse_error(r);
333 r = sd_rtnl_message_read_string(reply, IFLA_IFNAME, &name);
335 return rtnl_log_parse_error(r);
337 r = sd_rtnl_message_link_get_type(reply, &iftype);
339 return rtnl_log_parse_error(r);
341 have_mac = sd_rtnl_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0;
345 bool all_zeroes = true;
347 for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++)
357 sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);
359 sd_network_link_get_operational_state(ifindex, &operational_state);
360 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
362 sd_network_link_get_setup_state(ifindex, &setup_state);
363 setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
365 sd_network_link_get_dns(ifindex, &dns);
366 sd_network_link_get_ntp(ifindex, &ntp);
368 sprintf(devid, "n%i", ifindex);
369 d = udev_device_new_from_device_id(udev, devid);
371 link_get_type_string(iftype, d, &t);
374 driver = udev_device_get_property_value(d, "ID_NET_DRIVER");
375 path = udev_device_get_property_value(d, "ID_PATH");
377 vendor = udev_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE");
379 vendor = udev_device_get_property_value(d, "ID_VENDOR");
381 model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");
383 model = udev_device_get_property_value(d, "ID_MODEL");
387 printf("%s%s%s %i: %s\n", on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, ifindex, name);
390 " State: %s%s%s (%s%s%s)\n",
392 on_color_operational, strna(operational_state), off_color_operational,
393 on_color_setup, strna(setup_state), off_color_setup);
396 printf(" Path: %s\n", path);
398 printf(" Driver: %s\n", driver);
400 printf(" Vendor: %s\n", vendor);
402 printf(" Model: %s\n", model);
405 printf(" HW Address: %s\n", ether_ntoa(&e));
408 printf(" MTU: %u\n", mtu);
410 dump_addresses(rtnl, " Address: ", ifindex);
412 if (!strv_isempty(dns))
413 dump_list(" DNS: ", dns);
414 if (!strv_isempty(ntp))
415 dump_list(" NTP: ", ntp);
420 static int link_status(char **args, unsigned n) {
421 _cleanup_udev_unref_ struct udev *udev = NULL;
422 _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
426 r = sd_rtnl_open(&rtnl, 0);
428 log_error("Failed to connect to netlink: %s", strerror(-r));
434 log_error("Failed to connect to udev: %m");
438 if (n <= 1 && !arg_all) {
439 _cleanup_free_ char *operational_state = NULL;
440 _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
441 _cleanup_free_ struct local_address *addresses = NULL;
442 const char *on_color_oper = "", *off_color_oper = "";
445 sd_network_get_operational_state(&operational_state);
446 if (streq_ptr(operational_state, "routable")) {
447 on_color_oper = ansi_highlight_green();
448 off_color_oper = ansi_highlight_off();
449 } else if (streq_ptr(operational_state, "degraded")) {
450 on_color_oper = ansi_highlight_yellow();
451 off_color_oper = ansi_highlight_off();
454 printf(" State: %s%s%s\n", on_color_oper, strna(operational_state), off_color_oper);
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;