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