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