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[thirdparty/systemd.git] / src / network / networkctl.c
1 /* SPDX-License-Identifier: LGPL-2.1+ */
2
3 #include <getopt.h>
4 #include <linux/if_addrlabel.h>
5 #include <net/if.h>
6 #include <stdbool.h>
7 #include <sys/stat.h>
8 #include <sys/types.h>
9 #include <unistd.h>
10
11 #include "sd-device.h"
12 #include "sd-hwdb.h"
13 #include "sd-lldp.h"
14 #include "sd-netlink.h"
15 #include "sd-network.h"
16
17 #include "alloc-util.h"
18 #include "arphrd-list.h"
19 #include "device-util.h"
20 #include "ether-addr-util.h"
21 #include "fd-util.h"
22 #include "format-table.h"
23 #include "hwdb-util.h"
24 #include "local-addresses.h"
25 #include "locale-util.h"
26 #include "macro.h"
27 #include "main-func.h"
28 #include "netlink-util.h"
29 #include "pager.h"
30 #include "parse-util.h"
31 #include "pretty-print.h"
32 #include "set.h"
33 #include "socket-util.h"
34 #include "sort-util.h"
35 #include "sparse-endian.h"
36 #include "stdio-util.h"
37 #include "string-table.h"
38 #include "string-util.h"
39 #include "strv.h"
40 #include "strxcpyx.h"
41 #include "terminal-util.h"
42 #include "verbs.h"
43
44 static PagerFlags arg_pager_flags = 0;
45 static bool arg_legend = true;
46 static bool arg_all = false;
47
48 static char *link_get_type_string(unsigned short iftype, sd_device *d) {
49 const char *t, *devtype;
50 char *p;
51
52 if (d &&
53 sd_device_get_devtype(d, &devtype) >= 0 &&
54 !isempty(devtype))
55 return strdup(devtype);
56
57 t = arphrd_to_name(iftype);
58 if (!t)
59 return NULL;
60
61 p = strdup(t);
62 if (!p)
63 return NULL;
64
65 ascii_strlower(p);
66 return p;
67 }
68
69 static void operational_state_to_color(const char *state, const char **on, const char **off) {
70 assert(on);
71 assert(off);
72
73 if (STRPTR_IN_SET(state, "routable", "enslaved")) {
74 *on = ansi_highlight_green();
75 *off = ansi_normal();
76 } else if (streq_ptr(state, "degraded")) {
77 *on = ansi_highlight_yellow();
78 *off = ansi_normal();
79 } else
80 *on = *off = "";
81 }
82
83 static void setup_state_to_color(const char *state, const char **on, const char **off) {
84 assert(on);
85 assert(off);
86
87 if (streq_ptr(state, "configured")) {
88 *on = ansi_highlight_green();
89 *off = ansi_normal();
90 } else if (streq_ptr(state, "configuring")) {
91 *on = ansi_highlight_yellow();
92 *off = ansi_normal();
93 } else if (STRPTR_IN_SET(state, "failed", "linger")) {
94 *on = ansi_highlight_red();
95 *off = ansi_normal();
96 } else
97 *on = *off = "";
98 }
99
100 typedef struct LinkInfo {
101 char name[IFNAMSIZ+1];
102 int ifindex;
103 unsigned short iftype;
104 struct ether_addr mac_address;
105 uint32_t mtu;
106 uint32_t min_mtu;
107 uint32_t max_mtu;
108 uint32_t tx_queues;
109 uint32_t rx_queues;
110
111 bool has_mac_address:1;
112 bool has_mtu:1;
113 bool has_min_mtu:1;
114 bool has_max_mtu:1;
115 bool has_tx_queues:1;
116 bool has_rx_queues:1;
117 } LinkInfo;
118
119 static int link_info_compare(const LinkInfo *a, const LinkInfo *b) {
120 return CMP(a->ifindex, b->ifindex);
121 }
122
123 static int decode_link(sd_netlink_message *m, LinkInfo *info, char **patterns) {
124 const char *name;
125 uint16_t type;
126 int ifindex, r;
127
128 assert(m);
129 assert(info);
130
131 r = sd_netlink_message_get_type(m, &type);
132 if (r < 0)
133 return r;
134
135 if (type != RTM_NEWLINK)
136 return 0;
137
138 r = sd_rtnl_message_link_get_ifindex(m, &ifindex);
139 if (r < 0)
140 return r;
141
142 r = sd_netlink_message_read_string(m, IFLA_IFNAME, &name);
143 if (r < 0)
144 return r;
145
146 if (patterns) {
147 char str[DECIMAL_STR_MAX(int)];
148
149 xsprintf(str, "%i", ifindex);
150
151 if (!strv_fnmatch(patterns, str, 0) && !strv_fnmatch(patterns, name, 0))
152 return 0;
153 }
154
155 r = sd_rtnl_message_link_get_type(m, &info->iftype);
156 if (r < 0)
157 return r;
158
159 strscpy(info->name, sizeof info->name, name);
160 info->ifindex = ifindex;
161
162 info->has_mac_address =
163 sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &info->mac_address) >= 0 &&
164 memcmp(&info->mac_address, &ETHER_ADDR_NULL, sizeof(struct ether_addr)) != 0;
165
166 info->has_mtu =
167 sd_netlink_message_read_u32(m, IFLA_MTU, &info->mtu) >= 0 &&
168 info->mtu > 0;
169
170 info->has_min_mtu =
171 sd_netlink_message_read_u32(m, IFLA_MIN_MTU, &info->min_mtu) >= 0 &&
172 info->min_mtu > 0;
173
174 info->has_max_mtu =
175 sd_netlink_message_read_u32(m, IFLA_MAX_MTU, &info->max_mtu) >= 0 &&
176 info->min_mtu > 0;
177
178 info->has_rx_queues =
179 sd_netlink_message_read_u32(m, IFLA_NUM_RX_QUEUES, &info->rx_queues) >= 0 &&
180 info->rx_queues > 0;
181
182 info->has_tx_queues =
183 sd_netlink_message_read_u32(m, IFLA_NUM_TX_QUEUES, &info->tx_queues) >= 0 &&
184 info->tx_queues > 0;
185
186 return 1;
187 }
188
189 static int acquire_link_info(sd_netlink *rtnl, char **patterns, LinkInfo **ret) {
190 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
191 _cleanup_free_ LinkInfo *links = NULL;
192 size_t allocated = 0, c = 0;
193 sd_netlink_message *i;
194 int r;
195
196 assert(rtnl);
197 assert(ret);
198
199 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
200 if (r < 0)
201 return rtnl_log_create_error(r);
202
203 r = sd_netlink_message_request_dump(req, true);
204 if (r < 0)
205 return rtnl_log_create_error(r);
206
207 r = sd_netlink_call(rtnl, req, 0, &reply);
208 if (r < 0)
209 return log_error_errno(r, "Failed to enumerate links: %m");
210
211 for (i = reply; i; i = sd_netlink_message_next(i)) {
212 if (!GREEDY_REALLOC(links, allocated, c+1))
213 return -ENOMEM;
214
215 r = decode_link(i, links + c, patterns);
216 if (r < 0)
217 return r;
218 if (r > 0)
219 c++;
220 }
221
222 typesafe_qsort(links, c, link_info_compare);
223
224 *ret = TAKE_PTR(links);
225
226 return (int) c;
227 }
228
229 static int list_links(int argc, char *argv[], void *userdata) {
230 _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
231 _cleanup_free_ LinkInfo *links = NULL;
232 _cleanup_(table_unrefp) Table *table = NULL;
233 TableCell *cell;
234 int c, i, r;
235
236 r = sd_netlink_open(&rtnl);
237 if (r < 0)
238 return log_error_errno(r, "Failed to connect to netlink: %m");
239
240 c = acquire_link_info(rtnl, argc > 1 ? argv + 1 : NULL, &links);
241 if (c < 0)
242 return c;
243
244 (void) pager_open(arg_pager_flags);
245
246 table = table_new("IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP");
247 if (!table)
248 return log_oom();
249
250 table_set_header(table, arg_legend);
251
252 assert_se(cell = table_get_cell(table, 0, 0));
253 (void) table_set_minimum_width(table, cell, 3);
254 (void) table_set_weight(table, cell, 0);
255 (void) table_set_ellipsize_percent(table, cell, 0);
256 (void) table_set_align_percent(table, cell, 100);
257
258 assert_se(cell = table_get_cell(table, 0, 1));
259 (void) table_set_minimum_width(table, cell, 16);
260
261 assert_se(cell = table_get_cell(table, 0, 2));
262 (void) table_set_minimum_width(table, cell, 18);
263
264 assert_se(cell = table_get_cell(table, 0, 3));
265 (void) table_set_minimum_width(table, cell, 16);
266
267 assert_se(cell = table_get_cell(table, 0, 4));
268 (void) table_set_minimum_width(table, cell, 10);
269
270 for (i = 0; i < c; i++) {
271 _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
272 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
273 const char *on_color_operational, *off_color_operational,
274 *on_color_setup, *off_color_setup;
275 char devid[2 + DECIMAL_STR_MAX(int)];
276 _cleanup_free_ char *t = NULL;
277
278 (void) sd_network_link_get_operational_state(links[i].ifindex, &operational_state);
279 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
280
281 r = sd_network_link_get_setup_state(links[i].ifindex, &setup_state);
282 if (r == -ENODATA) /* If there's no info available about this iface, it's unmanaged by networkd */
283 setup_state = strdup("unmanaged");
284 setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
285
286 xsprintf(devid, "n%i", links[i].ifindex);
287 (void) sd_device_new_from_device_id(&d, devid);
288
289 t = link_get_type_string(links[i].iftype, d);
290
291 r = table_add_cell_full(table, NULL, TABLE_INT, &links[i].ifindex, SIZE_MAX, SIZE_MAX, 0, 100, 0);
292 if (r < 0)
293 return r;
294
295 r = table_add_many(table,
296 TABLE_STRING, links[i].name,
297 TABLE_STRING, strna(t));
298 if (r < 0)
299 return r;
300
301 r = table_add_cell(table, &cell, TABLE_STRING, strna(operational_state));
302 if (r < 0)
303 return r;
304
305 (void) table_set_color(table, cell, on_color_operational);
306
307 r = table_add_cell(table, &cell, TABLE_STRING, strna(setup_state));
308 if (r < 0)
309 return r;
310
311 (void) table_set_color(table, cell, on_color_setup);
312 }
313
314 r = table_print(table, NULL);
315 if (r < 0)
316 return log_error_errno(r, "Failed to print table: %m");
317
318 if (arg_legend)
319 printf("\n%i links listed.\n", c);
320
321 return 0;
322 }
323
324 /* IEEE Organizationally Unique Identifier vendor string */
325 static int ieee_oui(sd_hwdb *hwdb, const struct ether_addr *mac, char **ret) {
326 const char *description;
327 char modalias[STRLEN("OUI:XXYYXXYYXXYY") + 1], *desc;
328 int r;
329
330 assert(ret);
331
332 if (!hwdb)
333 return -EINVAL;
334
335 if (!mac)
336 return -EINVAL;
337
338 /* skip commonly misused 00:00:00 (Xerox) prefix */
339 if (memcmp(mac, "\0\0\0", 3) == 0)
340 return -EINVAL;
341
342 xsprintf(modalias, "OUI:" ETHER_ADDR_FORMAT_STR,
343 ETHER_ADDR_FORMAT_VAL(*mac));
344
345 r = sd_hwdb_get(hwdb, modalias, "ID_OUI_FROM_DATABASE", &description);
346 if (r < 0)
347 return r;
348
349 desc = strdup(description);
350 if (!desc)
351 return -ENOMEM;
352
353 *ret = desc;
354
355 return 0;
356 }
357
358 static int get_gateway_description(
359 sd_netlink *rtnl,
360 sd_hwdb *hwdb,
361 int ifindex,
362 int family,
363 union in_addr_union *gateway,
364 char **gateway_description) {
365 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
366 sd_netlink_message *m;
367 int r;
368
369 assert(rtnl);
370 assert(ifindex >= 0);
371 assert(IN_SET(family, AF_INET, AF_INET6));
372 assert(gateway);
373 assert(gateway_description);
374
375 r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_GETNEIGH, ifindex, family);
376 if (r < 0)
377 return r;
378
379 r = sd_netlink_message_request_dump(req, true);
380 if (r < 0)
381 return r;
382
383 r = sd_netlink_call(rtnl, req, 0, &reply);
384 if (r < 0)
385 return r;
386
387 for (m = reply; m; m = sd_netlink_message_next(m)) {
388 union in_addr_union gw = IN_ADDR_NULL;
389 struct ether_addr mac = ETHER_ADDR_NULL;
390 uint16_t type;
391 int ifi, fam;
392
393 r = sd_netlink_message_get_errno(m);
394 if (r < 0) {
395 log_error_errno(r, "got error: %m");
396 continue;
397 }
398
399 r = sd_netlink_message_get_type(m, &type);
400 if (r < 0) {
401 log_error_errno(r, "could not get type: %m");
402 continue;
403 }
404
405 if (type != RTM_NEWNEIGH) {
406 log_error("type is not RTM_NEWNEIGH");
407 continue;
408 }
409
410 r = sd_rtnl_message_neigh_get_family(m, &fam);
411 if (r < 0) {
412 log_error_errno(r, "could not get family: %m");
413 continue;
414 }
415
416 if (fam != family) {
417 log_error("family is not correct");
418 continue;
419 }
420
421 r = sd_rtnl_message_neigh_get_ifindex(m, &ifi);
422 if (r < 0) {
423 log_error_errno(r, "could not get ifindex: %m");
424 continue;
425 }
426
427 if (ifindex > 0 && ifi != ifindex)
428 continue;
429
430 switch (fam) {
431 case AF_INET:
432 r = sd_netlink_message_read_in_addr(m, NDA_DST, &gw.in);
433 if (r < 0)
434 continue;
435
436 break;
437 case AF_INET6:
438 r = sd_netlink_message_read_in6_addr(m, NDA_DST, &gw.in6);
439 if (r < 0)
440 continue;
441
442 break;
443 default:
444 continue;
445 }
446
447 if (!in_addr_equal(fam, &gw, gateway))
448 continue;
449
450 r = sd_netlink_message_read_ether_addr(m, NDA_LLADDR, &mac);
451 if (r < 0)
452 continue;
453
454 r = ieee_oui(hwdb, &mac, gateway_description);
455 if (r < 0)
456 continue;
457
458 return 0;
459 }
460
461 return -ENODATA;
462 }
463
464 static int dump_gateways(
465 sd_netlink *rtnl,
466 sd_hwdb *hwdb,
467 const char *prefix,
468 int ifindex) {
469 _cleanup_free_ struct local_address *local = NULL;
470 int r, n, i;
471
472 assert(rtnl);
473 assert(prefix);
474
475 n = local_gateways(rtnl, ifindex, AF_UNSPEC, &local);
476 if (n < 0)
477 return n;
478
479 for (i = 0; i < n; i++) {
480 _cleanup_free_ char *gateway = NULL, *description = NULL;
481
482 r = in_addr_to_string(local[i].family, &local[i].address, &gateway);
483 if (r < 0)
484 return r;
485
486 r = get_gateway_description(rtnl, hwdb, local[i].ifindex, local[i].family, &local[i].address, &description);
487 if (r < 0)
488 log_debug_errno(r, "Could not get description of gateway: %m");
489
490 printf("%*s%s",
491 (int) strlen(prefix),
492 i == 0 ? prefix : "",
493 gateway);
494
495 if (description)
496 printf(" (%s)", description);
497
498 /* Show interface name for the entry if we show
499 * entries for all interfaces */
500 if (ifindex <= 0) {
501 char name[IF_NAMESIZE+1];
502
503 if (if_indextoname(local[i].ifindex, name)) {
504 fputs(" on ", stdout);
505 fputs(name, stdout);
506 } else
507 printf(" on %%%i", local[i].ifindex);
508 }
509
510 fputc('\n', stdout);
511 }
512
513 return 0;
514 }
515
516 static int dump_addresses(
517 sd_netlink *rtnl,
518 const char *prefix,
519 int ifindex) {
520
521 _cleanup_free_ struct local_address *local = NULL;
522 int r, n, i;
523
524 assert(rtnl);
525 assert(prefix);
526
527 n = local_addresses(rtnl, ifindex, AF_UNSPEC, &local);
528 if (n < 0)
529 return n;
530
531 for (i = 0; i < n; i++) {
532 _cleanup_free_ char *pretty = NULL;
533
534 r = in_addr_to_string(local[i].family, &local[i].address, &pretty);
535 if (r < 0)
536 return r;
537
538 printf("%*s%s",
539 (int) strlen(prefix),
540 i == 0 ? prefix : "",
541 pretty);
542
543 if (ifindex <= 0) {
544 char name[IF_NAMESIZE+1];
545
546 if (if_indextoname(local[i].ifindex, name)) {
547 fputs(" on ", stdout);
548 fputs(name, stdout);
549 } else
550 printf(" on %%%i", local[i].ifindex);
551 }
552
553 fputc('\n', stdout);
554 }
555
556 return 0;
557 }
558
559 static int dump_address_labels(sd_netlink *rtnl) {
560 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
561 sd_netlink_message *m;
562 int r;
563
564 assert(rtnl);
565
566 r = sd_rtnl_message_new_addrlabel(rtnl, &req, RTM_GETADDRLABEL, 0, AF_INET6);
567 if (r < 0)
568 return log_error_errno(r, "Could not allocate RTM_GETADDRLABEL message: %m");
569
570 r = sd_netlink_message_request_dump(req, true);
571 if (r < 0)
572 return r;
573
574 r = sd_netlink_call(rtnl, req, 0, &reply);
575 if (r < 0)
576 return r;
577
578 printf("%10s/%s %30s\n", "Prefix", "Prefixlen", "Label");
579
580 for (m = reply; m; m = sd_netlink_message_next(m)) {
581 _cleanup_free_ char *pretty = NULL;
582 union in_addr_union prefix = IN_ADDR_NULL;
583 uint8_t prefixlen;
584 uint32_t label;
585
586 r = sd_netlink_message_get_errno(m);
587 if (r < 0) {
588 log_error_errno(r, "got error: %m");
589 continue;
590 }
591
592 r = sd_netlink_message_read_u32(m, IFAL_LABEL, &label);
593 if (r < 0 && r != -ENODATA) {
594 log_error_errno(r, "Could not read IFAL_LABEL, ignoring: %m");
595 continue;
596 }
597
598 r = sd_netlink_message_read_in6_addr(m, IFAL_ADDRESS, &prefix.in6);
599 if (r < 0)
600 continue;
601
602 r = in_addr_to_string(AF_INET6, &prefix, &pretty);
603 if (r < 0)
604 continue;
605
606 r = sd_rtnl_message_addrlabel_get_prefixlen(m, &prefixlen);
607 if (r < 0)
608 continue;
609
610 printf("%10s/%-5u %30u\n", pretty, prefixlen, label);
611 }
612
613 return 0;
614 }
615
616 static int list_address_labels(int argc, char *argv[], void *userdata) {
617 _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
618 int r;
619
620 r = sd_netlink_open(&rtnl);
621 if (r < 0)
622 return log_error_errno(r, "Failed to connect to netlink: %m");
623
624 dump_address_labels(rtnl);
625
626 return 0;
627 }
628
629 static int open_lldp_neighbors(int ifindex, FILE **ret) {
630 _cleanup_free_ char *p = NULL;
631 FILE *f;
632
633 if (asprintf(&p, "/run/systemd/netif/lldp/%i", ifindex) < 0)
634 return -ENOMEM;
635
636 f = fopen(p, "re");
637 if (!f)
638 return -errno;
639
640 *ret = f;
641 return 0;
642 }
643
644 static int next_lldp_neighbor(FILE *f, sd_lldp_neighbor **ret) {
645 _cleanup_free_ void *raw = NULL;
646 size_t l;
647 le64_t u;
648 int r;
649
650 assert(f);
651 assert(ret);
652
653 l = fread(&u, 1, sizeof(u), f);
654 if (l == 0 && feof(f))
655 return 0;
656 if (l != sizeof(u))
657 return -EBADMSG;
658
659 /* each LLDP packet is at most MTU size, but let's allow up to 4KiB just in case */
660 if (le64toh(u) >= 4096)
661 return -EBADMSG;
662
663 raw = new(uint8_t, le64toh(u));
664 if (!raw)
665 return -ENOMEM;
666
667 if (fread(raw, 1, le64toh(u), f) != le64toh(u))
668 return -EBADMSG;
669
670 r = sd_lldp_neighbor_from_raw(ret, raw, le64toh(u));
671 if (r < 0)
672 return r;
673
674 return 1;
675 }
676
677 static int dump_lldp_neighbors(const char *prefix, int ifindex) {
678 _cleanup_fclose_ FILE *f = NULL;
679 int r, c = 0;
680
681 assert(prefix);
682 assert(ifindex > 0);
683
684 r = open_lldp_neighbors(ifindex, &f);
685 if (r < 0)
686 return r;
687
688 for (;;) {
689 const char *system_name = NULL, *port_id = NULL, *port_description = NULL;
690 _cleanup_(sd_lldp_neighbor_unrefp) sd_lldp_neighbor *n = NULL;
691
692 r = next_lldp_neighbor(f, &n);
693 if (r < 0)
694 return r;
695 if (r == 0)
696 break;
697
698 printf("%*s",
699 (int) strlen(prefix),
700 c == 0 ? prefix : "");
701
702 (void) sd_lldp_neighbor_get_system_name(n, &system_name);
703 (void) sd_lldp_neighbor_get_port_id_as_string(n, &port_id);
704 (void) sd_lldp_neighbor_get_port_description(n, &port_description);
705
706 printf("%s on port %s", strna(system_name), strna(port_id));
707
708 if (!isempty(port_description))
709 printf(" (%s)", port_description);
710
711 putchar('\n');
712
713 c++;
714 }
715
716 return c;
717 }
718
719 static void dump_ifindexes(const char *prefix, const int *ifindexes) {
720 unsigned c;
721
722 assert(prefix);
723
724 if (!ifindexes || ifindexes[0] <= 0)
725 return;
726
727 for (c = 0; ifindexes[c] > 0; c++) {
728 char name[IF_NAMESIZE+1];
729
730 printf("%*s",
731 (int) strlen(prefix),
732 c == 0 ? prefix : "");
733
734 if (if_indextoname(ifindexes[c], name))
735 fputs(name, stdout);
736 else
737 printf("%i", ifindexes[c]);
738
739 fputc('\n', stdout);
740 }
741 }
742
743 static void dump_list(const char *prefix, char **l) {
744 char **i;
745
746 if (strv_isempty(l))
747 return;
748
749 STRV_FOREACH(i, l) {
750 printf("%*s%s\n",
751 (int) strlen(prefix),
752 i == l ? prefix : "",
753 *i);
754 }
755 }
756
757 static int link_status_one(
758 sd_netlink *rtnl,
759 sd_hwdb *hwdb,
760 const LinkInfo *info) {
761
762 _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains = NULL;
763 _cleanup_free_ char *setup_state = NULL, *operational_state = NULL, *tz = NULL;
764 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
765 char devid[2 + DECIMAL_STR_MAX(int)];
766 _cleanup_free_ char *t = NULL, *network = NULL;
767 const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL, *link = NULL;
768 const char *on_color_operational, *off_color_operational,
769 *on_color_setup, *off_color_setup;
770 _cleanup_free_ int *carrier_bound_to = NULL, *carrier_bound_by = NULL;
771 int r;
772
773 assert(rtnl);
774 assert(info);
775
776 (void) sd_network_link_get_operational_state(info->ifindex, &operational_state);
777 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
778
779 r = sd_network_link_get_setup_state(info->ifindex, &setup_state);
780 if (r == -ENODATA) /* If there's no info available about this iface, it's unmanaged by networkd */
781 setup_state = strdup("unmanaged");
782 setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
783
784 (void) sd_network_link_get_dns(info->ifindex, &dns);
785 (void) sd_network_link_get_search_domains(info->ifindex, &search_domains);
786 (void) sd_network_link_get_route_domains(info->ifindex, &route_domains);
787 (void) sd_network_link_get_ntp(info->ifindex, &ntp);
788
789 xsprintf(devid, "n%i", info->ifindex);
790
791 (void) sd_device_new_from_device_id(&d, devid);
792
793 if (d) {
794 (void) sd_device_get_property_value(d, "ID_NET_LINK_FILE", &link);
795 (void) sd_device_get_property_value(d, "ID_NET_DRIVER", &driver);
796 (void) sd_device_get_property_value(d, "ID_PATH", &path);
797
798 if (sd_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE", &vendor) < 0)
799 (void) sd_device_get_property_value(d, "ID_VENDOR", &vendor);
800
801 if (sd_device_get_property_value(d, "ID_MODEL_FROM_DATABASE", &model) < 0)
802 (void) sd_device_get_property_value(d, "ID_MODEL", &model);
803 }
804
805 t = link_get_type_string(info->iftype, d);
806
807 (void) sd_network_link_get_network_file(info->ifindex, &network);
808
809 (void) sd_network_link_get_carrier_bound_to(info->ifindex, &carrier_bound_to);
810 (void) sd_network_link_get_carrier_bound_by(info->ifindex, &carrier_bound_by);
811
812 printf("%s%s%s %i: %s\n", on_color_operational, special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE), off_color_operational, info->ifindex, info->name);
813
814 printf(" Link File: %s\n"
815 " Network File: %s\n"
816 " Type: %s\n"
817 " State: %s%s%s (%s%s%s)\n",
818 strna(link),
819 strna(network),
820 strna(t),
821 on_color_operational, strna(operational_state), off_color_operational,
822 on_color_setup, strna(setup_state), off_color_setup);
823
824 if (path)
825 printf(" Path: %s\n", path);
826 if (driver)
827 printf(" Driver: %s\n", driver);
828 if (vendor)
829 printf(" Vendor: %s\n", vendor);
830 if (model)
831 printf(" Model: %s\n", model);
832
833 if (info->has_mac_address) {
834 _cleanup_free_ char *description = NULL;
835 char ea[ETHER_ADDR_TO_STRING_MAX];
836
837 (void) ieee_oui(hwdb, &info->mac_address, &description);
838
839 if (description)
840 printf(" HW Address: %s (%s)\n", ether_addr_to_string(&info->mac_address, ea), description);
841 else
842 printf(" HW Address: %s\n", ether_addr_to_string(&info->mac_address, ea));
843 }
844
845 if (info->has_mtu)
846 printf(" MTU: %" PRIu32 "\n", info->mtu);
847 if (info->has_min_mtu)
848 printf(" Minimum MTU: %" PRIu32 "\n", info->min_mtu);
849 if (info->has_max_mtu)
850 printf(" Maximum MTU: %" PRIu32 "\n", info->max_mtu);
851
852 if (info->has_tx_queues)
853 printf("Transmit Queue Length: %" PRIu32 "\n", info->tx_queues);
854 if (info->has_rx_queues)
855 printf(" Receive Queue Length: %" PRIu32 "\n", info->rx_queues);
856
857 (void) dump_addresses(rtnl, " Address: ", info->ifindex);
858 (void) dump_gateways(rtnl, hwdb, " Gateway: ", info->ifindex);
859
860 dump_list(" DNS: ", dns);
861 dump_list(" Search Domains: ", search_domains);
862 dump_list(" Route Domains: ", route_domains);
863
864 dump_list(" NTP: ", ntp);
865
866 dump_ifindexes("Carrier Bound To: ", carrier_bound_to);
867 dump_ifindexes("Carrier Bound By: ", carrier_bound_by);
868
869 (void) sd_network_link_get_timezone(info->ifindex, &tz);
870 if (tz)
871 printf(" Time Zone: %s\n", tz);
872
873 (void) dump_lldp_neighbors(" Connected To: ", info->ifindex);
874
875 return 0;
876 }
877
878 static int system_status(sd_netlink *rtnl, sd_hwdb *hwdb) {
879 _cleanup_free_ char *operational_state = NULL;
880 _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains = NULL;
881 const char *on_color_operational, *off_color_operational;
882
883 assert(rtnl);
884
885 (void) sd_network_get_operational_state(&operational_state);
886 operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
887
888 printf("%s%s%s State: %s%s%s\n",
889 on_color_operational, special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE), off_color_operational,
890 on_color_operational, strna(operational_state), off_color_operational);
891
892 (void) dump_addresses(rtnl, " Address: ", 0);
893 (void) dump_gateways(rtnl, hwdb, " Gateway: ", 0);
894
895 (void) sd_network_get_dns(&dns);
896 dump_list(" DNS: ", dns);
897
898 (void) sd_network_get_search_domains(&search_domains);
899 dump_list("Search Domains: ", search_domains);
900
901 (void) sd_network_get_route_domains(&route_domains);
902 dump_list(" Route Domains: ", route_domains);
903
904 (void) sd_network_get_ntp(&ntp);
905 dump_list(" NTP: ", ntp);
906
907 return 0;
908 }
909
910 static int link_status(int argc, char *argv[], void *userdata) {
911 _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
912 _cleanup_(sd_hwdb_unrefp) sd_hwdb *hwdb = NULL;
913 _cleanup_free_ LinkInfo *links = NULL;
914 int r, c, i;
915
916 (void) pager_open(arg_pager_flags);
917
918 r = sd_netlink_open(&rtnl);
919 if (r < 0)
920 return log_error_errno(r, "Failed to connect to netlink: %m");
921
922 r = sd_hwdb_new(&hwdb);
923 if (r < 0)
924 log_debug_errno(r, "Failed to open hardware database: %m");
925
926 if (arg_all)
927 c = acquire_link_info(rtnl, NULL, &links);
928 else if (argc <= 1)
929 return system_status(rtnl, hwdb);
930 else
931 c = acquire_link_info(rtnl, argv + 1, &links);
932 if (c < 0)
933 return c;
934
935 for (i = 0; i < c; i++) {
936 if (i > 0)
937 fputc('\n', stdout);
938
939 link_status_one(rtnl, hwdb, links + i);
940 }
941
942 return 0;
943 }
944
945 static char *lldp_capabilities_to_string(uint16_t x) {
946 static const char characters[] = {
947 'o', 'p', 'b', 'w', 'r', 't', 'd', 'a', 'c', 's', 'm',
948 };
949 char *ret;
950 unsigned i;
951
952 ret = new(char, ELEMENTSOF(characters) + 1);
953 if (!ret)
954 return NULL;
955
956 for (i = 0; i < ELEMENTSOF(characters); i++)
957 ret[i] = (x & (1U << i)) ? characters[i] : '.';
958
959 ret[i] = 0;
960 return ret;
961 }
962
963 static void lldp_capabilities_legend(uint16_t x) {
964 unsigned w, i, cols = columns();
965 static const char* const table[] = {
966 "o - Other",
967 "p - Repeater",
968 "b - Bridge",
969 "w - WLAN Access Point",
970 "r - Router",
971 "t - Telephone",
972 "d - DOCSIS cable device",
973 "a - Station",
974 "c - Customer VLAN",
975 "s - Service VLAN",
976 "m - Two-port MAC Relay (TPMR)",
977 };
978
979 if (x == 0)
980 return;
981
982 printf("\nCapability Flags:\n");
983 for (w = 0, i = 0; i < ELEMENTSOF(table); i++)
984 if (x & (1U << i) || arg_all) {
985 bool newline;
986
987 newline = w + strlen(table[i]) + (w == 0 ? 0 : 2) > cols;
988 if (newline)
989 w = 0;
990 w += printf("%s%s%s", newline ? "\n" : "", w == 0 ? "" : "; ", table[i]);
991 }
992 puts("");
993 }
994
995 static int link_lldp_status(int argc, char *argv[], void *userdata) {
996 _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
997 _cleanup_free_ LinkInfo *links = NULL;
998 int i, r, c, m = 0;
999 uint16_t all = 0;
1000
1001 r = sd_netlink_open(&rtnl);
1002 if (r < 0)
1003 return log_error_errno(r, "Failed to connect to netlink: %m");
1004
1005 c = acquire_link_info(rtnl, argc > 1 ? argv + 1 : NULL, &links);
1006 if (c < 0)
1007 return c;
1008
1009 (void) pager_open(arg_pager_flags);
1010
1011 if (arg_legend)
1012 printf("%-16s %-17s %-16s %-11s %-17s %-16s\n",
1013 "LINK",
1014 "CHASSIS ID",
1015 "SYSTEM NAME",
1016 "CAPS",
1017 "PORT ID",
1018 "PORT DESCRIPTION");
1019
1020 for (i = 0; i < c; i++) {
1021 _cleanup_fclose_ FILE *f = NULL;
1022
1023 r = open_lldp_neighbors(links[i].ifindex, &f);
1024 if (r == -ENOENT)
1025 continue;
1026 if (r < 0) {
1027 log_warning_errno(r, "Failed to open LLDP data for %i, ignoring: %m", links[i].ifindex);
1028 continue;
1029 }
1030
1031 for (;;) {
1032 _cleanup_free_ char *cid = NULL, *pid = NULL, *sname = NULL, *pdesc = NULL;
1033 const char *chassis_id = NULL, *port_id = NULL, *system_name = NULL, *port_description = NULL, *capabilities = NULL;
1034 _cleanup_(sd_lldp_neighbor_unrefp) sd_lldp_neighbor *n = NULL;
1035 uint16_t cc;
1036
1037 r = next_lldp_neighbor(f, &n);
1038 if (r < 0) {
1039 log_warning_errno(r, "Failed to read neighbor data: %m");
1040 break;
1041 }
1042 if (r == 0)
1043 break;
1044
1045 (void) sd_lldp_neighbor_get_chassis_id_as_string(n, &chassis_id);
1046 (void) sd_lldp_neighbor_get_port_id_as_string(n, &port_id);
1047 (void) sd_lldp_neighbor_get_system_name(n, &system_name);
1048 (void) sd_lldp_neighbor_get_port_description(n, &port_description);
1049
1050 if (chassis_id) {
1051 cid = ellipsize(chassis_id, 17, 100);
1052 if (cid)
1053 chassis_id = cid;
1054 }
1055
1056 if (port_id) {
1057 pid = ellipsize(port_id, 17, 100);
1058 if (pid)
1059 port_id = pid;
1060 }
1061
1062 if (system_name) {
1063 sname = ellipsize(system_name, 16, 100);
1064 if (sname)
1065 system_name = sname;
1066 }
1067
1068 if (port_description) {
1069 pdesc = ellipsize(port_description, 16, 100);
1070 if (pdesc)
1071 port_description = pdesc;
1072 }
1073
1074 if (sd_lldp_neighbor_get_enabled_capabilities(n, &cc) >= 0) {
1075 capabilities = lldp_capabilities_to_string(cc);
1076 all |= cc;
1077 }
1078
1079 printf("%-16s %-17s %-16s %-11s %-17s %-16s\n",
1080 links[i].name,
1081 strna(chassis_id),
1082 strna(system_name),
1083 strna(capabilities),
1084 strna(port_id),
1085 strna(port_description));
1086
1087 m++;
1088 }
1089 }
1090
1091 if (arg_legend) {
1092 lldp_capabilities_legend(all);
1093 printf("\n%i neighbors listed.\n", m);
1094 }
1095
1096 return 0;
1097 }
1098
1099 static int link_delete_send_message(sd_netlink *rtnl, int index) {
1100 _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
1101 int r;
1102
1103 assert(rtnl);
1104
1105 r = sd_rtnl_message_new_link(rtnl, &req, RTM_DELLINK, index);
1106 if (r < 0)
1107 return rtnl_log_create_error(r);
1108
1109 r = sd_netlink_call(rtnl, req, 0, NULL);
1110 if (r < 0)
1111 return r;
1112
1113 return 0;
1114 }
1115
1116 static int link_delete(int argc, char *argv[], void *userdata) {
1117 _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
1118 _cleanup_set_free_ Set *indexes = NULL;
1119 char ifname[IFNAMSIZ] = "";
1120 int index, r, i;
1121 Iterator j;
1122
1123 r = sd_netlink_open(&rtnl);
1124 if (r < 0)
1125 return log_error_errno(r, "Failed to connect to netlink: %m");
1126
1127 indexes = set_new(NULL);
1128 if (!indexes)
1129 return log_oom();
1130
1131 for (i = 1; i < argc; i++) {
1132 r = parse_ifindex_or_ifname(argv[i], &index);
1133 if (r < 0)
1134 return log_error_errno(r, "Failed to resolve interface %s", argv[i]);
1135
1136 r = set_put(indexes, INT_TO_PTR(index));
1137 if (r < 0)
1138 return log_oom();
1139 }
1140
1141 SET_FOREACH(index, indexes, j) {
1142 r = link_delete_send_message(rtnl, index);
1143 if (r < 0) {
1144 if (if_indextoname(index, ifname))
1145 return log_error_errno(r, "Failed to delete interface %s: %m", ifname);
1146 else
1147 return log_error_errno(r, "Failed to delete interface %d: %m", index);
1148 }
1149 }
1150
1151 return r;
1152 }
1153
1154 static int help(void) {
1155 _cleanup_free_ char *link = NULL;
1156 int r;
1157
1158 r = terminal_urlify_man("networkctl", "1", &link);
1159 if (r < 0)
1160 return log_oom();
1161
1162 printf("%s [OPTIONS...]\n\n"
1163 "Query and control the networking subsystem.\n\n"
1164 " -h --help Show this help\n"
1165 " --version Show package version\n"
1166 " --no-pager Do not pipe output into a pager\n"
1167 " --no-legend Do not show the headers and footers\n"
1168 " -a --all Show status for all links\n\n"
1169 "Commands:\n"
1170 " list [PATTERN...] List links\n"
1171 " status [PATTERN...] Show link status\n"
1172 " lldp [PATTERN...] Show LLDP neighbors\n"
1173 " label Show current address label entries in the kernel\n"
1174 " delete DEVICES Delete virtual netdevs\n"
1175 "\nSee the %s for details.\n"
1176 , program_invocation_short_name
1177 , link
1178 );
1179
1180 return 0;
1181 }
1182
1183 static int parse_argv(int argc, char *argv[]) {
1184
1185 enum {
1186 ARG_VERSION = 0x100,
1187 ARG_NO_PAGER,
1188 ARG_NO_LEGEND,
1189 };
1190
1191 static const struct option options[] = {
1192 { "help", no_argument, NULL, 'h' },
1193 { "version", no_argument, NULL, ARG_VERSION },
1194 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
1195 { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
1196 { "all", no_argument, NULL, 'a' },
1197 {}
1198 };
1199
1200 int c;
1201
1202 assert(argc >= 0);
1203 assert(argv);
1204
1205 while ((c = getopt_long(argc, argv, "ha", options, NULL)) >= 0) {
1206
1207 switch (c) {
1208
1209 case 'h':
1210 return help();
1211
1212 case ARG_VERSION:
1213 return version();
1214
1215 case ARG_NO_PAGER:
1216 arg_pager_flags |= PAGER_DISABLE;
1217 break;
1218
1219 case ARG_NO_LEGEND:
1220 arg_legend = false;
1221 break;
1222
1223 case 'a':
1224 arg_all = true;
1225 break;
1226
1227 case '?':
1228 return -EINVAL;
1229
1230 default:
1231 assert_not_reached("Unhandled option");
1232 }
1233 }
1234
1235 return 1;
1236 }
1237
1238 static int networkctl_main(int argc, char *argv[]) {
1239 static const Verb verbs[] = {
1240 { "list", VERB_ANY, VERB_ANY, VERB_DEFAULT, list_links },
1241 { "status", VERB_ANY, VERB_ANY, 0, link_status },
1242 { "lldp", VERB_ANY, VERB_ANY, 0, link_lldp_status },
1243 { "label", VERB_ANY, VERB_ANY, 0, list_address_labels },
1244 { "delete", 2, VERB_ANY, 0, link_delete },
1245 {}
1246 };
1247
1248 return dispatch_verb(argc, argv, verbs, NULL);
1249 }
1250
1251 static void warn_networkd_missing(void) {
1252
1253 if (access("/run/systemd/netif/state", F_OK) >= 0)
1254 return;
1255
1256 fprintf(stderr, "WARNING: systemd-networkd is not running, output will be incomplete.\n\n");
1257 }
1258
1259 static int run(int argc, char* argv[]) {
1260 int r;
1261
1262 log_show_color(true);
1263 log_parse_environment();
1264 log_open();
1265
1266 r = parse_argv(argc, argv);
1267 if (r <= 0)
1268 return r;
1269
1270 warn_networkd_missing();
1271
1272 return networkctl_main(argc, argv);
1273 }
1274
1275 DEFINE_MAIN_FUNCTION(run);
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