usr.bin/sockstat/sockstat.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2002 Dag-Erling Coïdan Smørgrav
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer
  12  *    in this position and unchanged.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 #include <sys/param.h>
  35 #include <sys/file.h>
  36 #include <sys/socket.h>
  37 #include <sys/socketvar.h>
  38 #include <sys/sysctl.h>
  39 #include <sys/jail.h>
  40 #include <sys/user.h>
  41
  42 #include <sys/un.h>
  43 #define _WANT_UNPCB
  44 #include <sys/unpcb.h>
  45
  46 #include <net/route.h>
  47
  48 #include <netinet/in.h>
  49 #include <netinet/in_pcb.h>
  50 #include <netinet/sctp.h>
  51 #include <netinet/tcp.h>
  52 #define TCPSTATES /* load state names */
  53 #include <netinet/tcp_fsm.h>
  54 #include <netinet/tcp_seq.h>
  55 #include <netinet/tcp_var.h>
  56 #include <arpa/inet.h>
  57
  58 #include <ctype.h>
  59 #include <err.h>
  60 #include <errno.h>
  61 #include <inttypes.h>
  62 #include <jail.h>
  63 #include <netdb.h>
  64 #include <pwd.h>
  65 #include <stdarg.h>
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69 #include <unistd.h>
  70
  71 #define sstosin(ss)     ((struct sockaddr_in *)(ss))
  72 #define sstosin6(ss)    ((struct sockaddr_in6 *)(ss))
  73 #define sstosun(ss)     ((struct sockaddr_un *)(ss))
  74 #define sstosa(ss)      ((struct sockaddr *)(ss))
  75
  76 static int       opt_4;         /* Show IPv4 sockets */
  77 static int       opt_6;         /* Show IPv6 sockets */
  78 static int       opt_C;         /* Show congestion control */
  79 static int       opt_c;         /* Show connected sockets */
  80 static int       opt_i;         /* Show inp_gencnt */
  81 static int       opt_j;         /* Show specified jail */
  82 static int       opt_L;         /* Don't show IPv4 or IPv6 loopback sockets */
  83 static int       opt_l;         /* Show listening sockets */
  84 static int       opt_n;         /* Don't resolve UIDs to user names */
  85 static int       opt_q;         /* Don't show header */
  86 static int       opt_S;         /* Show protocol stack if applicable */
  87 static int       opt_s;         /* Show protocol state if applicable */
  88 static int       opt_U;         /* Show remote UDP encapsulation port number */
  89 static int       opt_u;         /* Show Unix domain sockets */
  90 static int       opt_v;         /* Verbose mode */
  91 static int       opt_w;         /* Wide print area for addresses */
  92
  93 /*
  94  * Default protocols to use if no -P was defined.
  95  */
  96 static const char *default_protos[] = {"sctp", "tcp", "udp", "divert" };
  97 static size_t      default_numprotos = nitems(default_protos);
  98
  99 static int      *protos;        /* protocols to use */
 100 static size_t    numprotos;     /* allocated size of protos[] */
 101
 102 static int      *ports;
 103
 104 #define INT_BIT (sizeof(int)*CHAR_BIT)
 105 #define SET_PORT(p) do { ports[p / INT_BIT] |= 1 << (p % INT_BIT); } while (0)
 106 #define CHK_PORT(p) (ports[p / INT_BIT] & (1 << (p % INT_BIT)))
 107
 108 struct addr {
 109         struct sockaddr_storage address;
 110         unsigned int encaps_port;
 111         int state;
 112         struct addr *next;
 113 };
 114
 115 struct sock {
 116         kvaddr_t socket;
 117         kvaddr_t pcb;
 118         uint64_t inp_gencnt;
 119         int shown;
 120         int vflag;
 121         int family;
 122         int proto;
 123         int state;
 124         const char *protoname;
 125         char stack[TCP_FUNCTION_NAME_LEN_MAX];
 126         char cc[TCP_CA_NAME_MAX];
 127         struct addr *laddr;
 128         struct addr *faddr;
 129         struct sock *next;
 130 };
 131
 132 #define HASHSIZE 1009
 133 static struct sock *sockhash[HASHSIZE];
 134
 135 static struct xfile *xfiles;
 136 static int nxfiles;
 137
 138 static int
 139 xprintf(const char *fmt, ...)
 140 {
 141         va_list ap;
 142         int len;
 143
 144         va_start(ap, fmt);
 145         len = vprintf(fmt, ap);
 146         va_end(ap);
 147         if (len < 0)
 148                 err(1, "printf()");
 149         return (len);
 150 }
 151
 152 static int
 153 get_proto_type(const char *proto)
 154 {
 155         struct protoent *pent;
 156
 157         if (strlen(proto) == 0)
 158                 return (0);
 159         pent = getprotobyname(proto);
 160         if (pent == NULL) {
 161                 warn("getprotobyname");
 162                 return (-1);
 163         }
 164         return (pent->p_proto);
 165 }
 166
 167 static void
 168 init_protos(int num)
 169 {
 170         int proto_count = 0;
 171
 172         if (num > 0) {
 173                 proto_count = num;
 174         } else {
 175                 /* Find the maximum number of possible protocols. */
 176                 while (getprotoent() != NULL)
 177                         proto_count++;
 178                 endprotoent();
 179         }
 180
 181         if ((protos = malloc(sizeof(int) * proto_count)) == NULL)
 182                 err(1, "malloc");
 183         numprotos = proto_count;
 184 }
 185
 186 static int
 187 parse_protos(char *protospec)
 188 {
 189         char *prot;
 190         int proto_type, proto_index;
 191
 192         if (protospec == NULL)
 193                 return (-1);
 194
 195         init_protos(0);
 196         proto_index = 0;
 197         while ((prot = strsep(&protospec, ",")) != NULL) {
 198                 if (strlen(prot) == 0)
 199                         continue;
 200                 proto_type = get_proto_type(prot);
 201                 if (proto_type != -1)
 202                         protos[proto_index++] = proto_type;
 203         }
 204         numprotos = proto_index;
 205         return (proto_index);
 206 }
 207
 208 static void
 209 parse_ports(const char *portspec)
 210 {
 211         const char *p, *q;
 212         int port, end;
 213
 214         if (ports == NULL)
 215                 if ((ports = calloc(65536 / INT_BIT, sizeof(int))) == NULL)
 216                         err(1, "calloc()");
 217         p = portspec;
 218         while (*p != '\0') {
 219                 if (!isdigit(*p))
 220                         errx(1, "syntax error in port range");
 221                 for (q = p; *q != '\0' && isdigit(*q); ++q)
 222                         /* nothing */ ;
 223                 for (port = 0; p < q; ++p)
 224                         port = port * 10 + digittoint(*p);
 225                 if (port < 0 || port > 65535)
 226                         errx(1, "invalid port number");
 227                 SET_PORT(port);
 228                 switch (*p) {
 229                 case '-':
 230                         ++p;
 231                         break;
 232                 case ',':
 233                         ++p;
 234                         /* fall through */
 235                 case '\0':
 236                 default:
 237                         continue;
 238                 }
 239                 for (q = p; *q != '\0' && isdigit(*q); ++q)
 240                         /* nothing */ ;
 241                 for (end = 0; p < q; ++p)
 242                         end = end * 10 + digittoint(*p);
 243                 if (end < port || end > 65535)
 244                         errx(1, "invalid port number");
 245                 while (port++ < end)
 246                         SET_PORT(port);
 247                 if (*p == ',')
 248                         ++p;
 249         }
 250 }
 251
 252 static void
 253 sockaddr(struct sockaddr_storage *ss, int af, void *addr, int port)
 254 {
 255         struct sockaddr_in *sin4;
 256         struct sockaddr_in6 *sin6;
 257
 258         bzero(ss, sizeof(*ss));
 259         switch (af) {
 260         case AF_INET:
 261                 sin4 = sstosin(ss);
 262                 sin4->sin_len = sizeof(*sin4);
 263                 sin4->sin_family = af;
 264                 sin4->sin_port = port;
 265                 sin4->sin_addr = *(struct in_addr *)addr;
 266                 break;
 267         case AF_INET6:
 268                 sin6 = sstosin6(ss);
 269                 sin6->sin6_len = sizeof(*sin6);
 270                 sin6->sin6_family = af;
 271                 sin6->sin6_port = port;
 272                 sin6->sin6_addr = *(struct in6_addr *)addr;
 273 #define s6_addr16       __u6_addr.__u6_addr16
 274                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 275                         sin6->sin6_scope_id =
 276                             ntohs(sin6->sin6_addr.s6_addr16[1]);
 277                         sin6->sin6_addr.s6_addr16[1] = 0;
 278                 }
 279                 break;
 280         default:
 281                 abort();
 282         }
 283 }
 284
 285 static void
 286 free_socket(struct sock *sock)
 287 {
 288         struct addr *cur, *next;
 289
 290         cur = sock->laddr;
 291         while (cur != NULL) {
 292                 next = cur->next;
 293                 free(cur);
 294                 cur = next;
 295         }
 296         cur = sock->faddr;
 297         while (cur != NULL) {
 298                 next = cur->next;
 299                 free(cur);
 300                 cur = next;
 301         }
 302         free(sock);
 303 }
 304
 305 static void
 306 gather_sctp(void)
 307 {
 308         struct sock *sock;
 309         struct addr *laddr, *prev_laddr, *faddr, *prev_faddr;
 310         struct xsctp_inpcb *xinpcb;
 311         struct xsctp_tcb *xstcb;
 312         struct xsctp_raddr *xraddr;
 313         struct xsctp_laddr *xladdr;
 314         const char *varname;
 315         size_t len, offset;
 316         char *buf;
 317         int hash, vflag;
 318         int no_stcb, local_all_loopback, foreign_all_loopback;
 319
 320         vflag = 0;
 321         if (opt_4)
 322                 vflag |= INP_IPV4;
 323         if (opt_6)
 324                 vflag |= INP_IPV6;
 325
 326         varname = "net.inet.sctp.assoclist";
 327         if (sysctlbyname(varname, 0, &len, 0, 0) < 0) {
 328                 if (errno != ENOENT)
 329                         err(1, "sysctlbyname()");
 330                 return;
 331         }
 332         if ((buf = (char *)malloc(len)) == NULL) {
 333                 err(1, "malloc()");
 334                 return;
 335         }
 336         if (sysctlbyname(varname, buf, &len, 0, 0) < 0) {
 337                 err(1, "sysctlbyname()");
 338                 free(buf);
 339                 return;
 340         }
 341         xinpcb = (struct xsctp_inpcb *)(void *)buf;
 342         offset = sizeof(struct xsctp_inpcb);
 343         while ((offset < len) && (xinpcb->last == 0)) {
 344                 if ((sock = calloc(1, sizeof *sock)) == NULL)
 345                         err(1, "malloc()");
 346                 sock->socket = xinpcb->socket;
 347                 sock->proto = IPPROTO_SCTP;
 348                 sock->protoname = "sctp";
 349                 if (xinpcb->maxqlen == 0)
 350                         sock->state = SCTP_CLOSED;
 351                 else
 352                         sock->state = SCTP_LISTEN;
 353                 if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
 354                         sock->family = AF_INET6;
 355                         /*
 356                          * Currently there is no way to distinguish between
 357                          * IPv6 only sockets or dual family sockets.
 358                          * So mark it as dual socket.
 359                          */
 360                         sock->vflag = INP_IPV6 | INP_IPV4;
 361                 } else {
 362                         sock->family = AF_INET;
 363                         sock->vflag = INP_IPV4;
 364                 }
 365                 prev_laddr = NULL;
 366                 local_all_loopback = 1;
 367                 while (offset < len) {
 368                         xladdr = (struct xsctp_laddr *)(void *)(buf + offset);
 369                         offset += sizeof(struct xsctp_laddr);
 370                         if (xladdr->last == 1)
 371                                 break;
 372                         if ((laddr = calloc(1, sizeof(struct addr))) == NULL)
 373                                 err(1, "malloc()");
 374                         switch (xladdr->address.sa.sa_family) {
 375                         case AF_INET:
 376 #define __IN_IS_ADDR_LOOPBACK(pina) \
 377         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 378                                 if (!__IN_IS_ADDR_LOOPBACK(
 379                                     &xladdr->address.sin.sin_addr))
 380                                         local_all_loopback = 0;
 381 #undef  __IN_IS_ADDR_LOOPBACK
 382                                 sockaddr(&laddr->address, AF_INET,
 383                                     &xladdr->address.sin.sin_addr,
 384                                     htons(xinpcb->local_port));
 385                                 break;
 386                         case AF_INET6:
 387                                 if (!IN6_IS_ADDR_LOOPBACK(
 388                                     &xladdr->address.sin6.sin6_addr))
 389                                         local_all_loopback = 0;
 390                                 sockaddr(&laddr->address, AF_INET6,
 391                                     &xladdr->address.sin6.sin6_addr,
 392                                     htons(xinpcb->local_port));
 393                                 break;
 394                         default:
 395                                 errx(1, "address family %d not supported",
 396                                     xladdr->address.sa.sa_family);
 397                         }
 398                         laddr->next = NULL;
 399                         if (prev_laddr == NULL)
 400                                 sock->laddr = laddr;
 401                         else
 402                                 prev_laddr->next = laddr;
 403                         prev_laddr = laddr;
 404                 }
 405                 if (sock->laddr == NULL) {
 406                         if ((sock->laddr =
 407                             calloc(1, sizeof(struct addr))) == NULL)
 408                                 err(1, "malloc()");
 409                         sock->laddr->address.ss_family = sock->family;
 410                         if (sock->family == AF_INET)
 411                                 sock->laddr->address.ss_len =
 412                                     sizeof(struct sockaddr_in);
 413                         else
 414                                 sock->laddr->address.ss_len =
 415                                     sizeof(struct sockaddr_in6);
 416                         local_all_loopback = 0;
 417                 }
 418                 if ((sock->faddr = calloc(1, sizeof(struct addr))) == NULL)
 419                         err(1, "malloc()");
 420                 sock->faddr->address.ss_family = sock->family;
 421                 if (sock->family == AF_INET)
 422                         sock->faddr->address.ss_len =
 423                             sizeof(struct sockaddr_in);
 424                 else
 425                         sock->faddr->address.ss_len =
 426                             sizeof(struct sockaddr_in6);
 427                 no_stcb = 1;
 428                 while (offset < len) {
 429                         xstcb = (struct xsctp_tcb *)(void *)(buf + offset);
 430                         offset += sizeof(struct xsctp_tcb);
 431                         if (no_stcb) {
 432                                 if (opt_l && (sock->vflag & vflag) &&
 433                                     (!opt_L || !local_all_loopback) &&
 434                                     ((xinpcb->flags & SCTP_PCB_FLAGS_UDPTYPE) ||
 435                                      (xstcb->last == 1))) {
 436                                         hash = (int)((uintptr_t)sock->socket %
 437                                             HASHSIZE);
 438                                         sock->next = sockhash[hash];
 439                                         sockhash[hash] = sock;
 440                                 } else {
 441                                         free_socket(sock);
 442                                 }
 443                         }
 444                         if (xstcb->last == 1)
 445                                 break;
 446                         no_stcb = 0;
 447                         if (opt_c) {
 448                                 if ((sock = calloc(1, sizeof *sock)) == NULL)
 449                                         err(1, "malloc()");
 450                                 sock->socket = xinpcb->socket;
 451                                 sock->proto = IPPROTO_SCTP;
 452                                 sock->protoname = "sctp";
 453                                 sock->state = (int)xstcb->state;
 454                                 if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
 455                                         sock->family = AF_INET6;
 456                                 /*
 457                                  * Currently there is no way to distinguish
 458                                  * between IPv6 only sockets or dual family
 459                                  *  sockets. So mark it as dual socket.
 460                                  */
 461                                         sock->vflag = INP_IPV6 | INP_IPV4;
 462                                 } else {
 463                                         sock->family = AF_INET;
 464                                         sock->vflag = INP_IPV4;
 465                                 }
 466                         }
 467                         prev_laddr = NULL;
 468                         local_all_loopback = 1;
 469                         while (offset < len) {
 470                                 xladdr = (struct xsctp_laddr *)(void *)(buf +
 471                                     offset);
 472                                 offset += sizeof(struct xsctp_laddr);
 473                                 if (xladdr->last == 1)
 474                                         break;
 475                                 if (!opt_c)
 476                                         continue;
 477                                 laddr = calloc(1, sizeof(struct addr));
 478                                 if (laddr == NULL)
 479                                         err(1, "malloc()");
 480                                 switch (xladdr->address.sa.sa_family) {
 481                                 case AF_INET:
 482 #define __IN_IS_ADDR_LOOPBACK(pina) \
 483         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 484                                         if (!__IN_IS_ADDR_LOOPBACK(
 485                                             &xladdr->address.sin.sin_addr))
 486                                                 local_all_loopback = 0;
 487 #undef  __IN_IS_ADDR_LOOPBACK
 488                                         sockaddr(&laddr->address, AF_INET,
 489                                             &xladdr->address.sin.sin_addr,
 490                                             htons(xstcb->local_port));
 491                                         break;
 492                                 case AF_INET6:
 493                                         if (!IN6_IS_ADDR_LOOPBACK(
 494                                             &xladdr->address.sin6.sin6_addr))
 495                                                 local_all_loopback = 0;
 496                                         sockaddr(&laddr->address, AF_INET6,
 497                                             &xladdr->address.sin6.sin6_addr,
 498                                             htons(xstcb->local_port));
 499                                         break;
 500                                 default:
 501                                         errx(1,
 502                                             "address family %d not supported",
 503                                             xladdr->address.sa.sa_family);
 504                                 }
 505                                 laddr->next = NULL;
 506                                 if (prev_laddr == NULL)
 507                                         sock->laddr = laddr;
 508                                 else
 509                                         prev_laddr->next = laddr;
 510                                 prev_laddr = laddr;
 511                         }
 512                         prev_faddr = NULL;
 513                         foreign_all_loopback = 1;
 514                         while (offset < len) {
 515                                 xraddr = (struct xsctp_raddr *)(void *)(buf +
 516                                     offset);
 517                                 offset += sizeof(struct xsctp_raddr);
 518                                 if (xraddr->last == 1)
 519                                         break;
 520                                 if (!opt_c)
 521                                         continue;
 522                                 faddr = calloc(1, sizeof(struct addr));
 523                                 if (faddr == NULL)
 524                                         err(1, "malloc()");
 525                                 switch (xraddr->address.sa.sa_family) {
 526                                 case AF_INET:
 527 #define __IN_IS_ADDR_LOOPBACK(pina) \
 528         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 529                                         if (!__IN_IS_ADDR_LOOPBACK(
 530                                             &xraddr->address.sin.sin_addr))
 531                                                 foreign_all_loopback = 0;
 532 #undef  __IN_IS_ADDR_LOOPBACK
 533                                         sockaddr(&faddr->address, AF_INET,
 534                                             &xraddr->address.sin.sin_addr,
 535                                             htons(xstcb->remote_port));
 536                                         break;
 537                                 case AF_INET6:
 538                                         if (!IN6_IS_ADDR_LOOPBACK(
 539                                             &xraddr->address.sin6.sin6_addr))
 540                                                 foreign_all_loopback = 0;
 541                                         sockaddr(&faddr->address, AF_INET6,
 542                                             &xraddr->address.sin6.sin6_addr,
 543                                             htons(xstcb->remote_port));
 544                                         break;
 545                                 default:
 546                                         errx(1,
 547                                             "address family %d not supported",
 548                                             xraddr->address.sa.sa_family);
 549                                 }
 550                                 faddr->encaps_port = xraddr->encaps_port;
 551                                 faddr->state = xraddr->state;
 552                                 faddr->next = NULL;
 553                                 if (prev_faddr == NULL)
 554                                         sock->faddr = faddr;
 555                                 else
 556                                         prev_faddr->next = faddr;
 557                                 prev_faddr = faddr;
 558                         }
 559                         if (opt_c) {
 560                                 if ((sock->vflag & vflag) &&
 561                                     (!opt_L ||
 562                                      !(local_all_loopback ||
 563                                      foreign_all_loopback))) {
 564                                         hash = (int)((uintptr_t)sock->socket %
 565                                             HASHSIZE);
 566                                         sock->next = sockhash[hash];
 567                                         sockhash[hash] = sock;
 568                                 } else {
 569                                         free_socket(sock);
 570                                 }
 571                         }
 572                 }
 573                 xinpcb = (struct xsctp_inpcb *)(void *)(buf + offset);
 574                 offset += sizeof(struct xsctp_inpcb);
 575         }
 576         free(buf);
 577 }
 578
 579 static void
 580 gather_inet(int proto)
 581 {
 582         struct xinpgen *xig, *exig;
 583         struct xinpcb *xip;
 584         struct xtcpcb *xtp = NULL;
 585         struct xsocket *so;
 586         struct sock *sock;
 587         struct addr *laddr, *faddr;
 588         const char *varname, *protoname;
 589         size_t len, bufsize;
 590         void *buf;
 591         int hash, retry, vflag;
 592
 593         vflag = 0;
 594         if (opt_4)
 595                 vflag |= INP_IPV4;
 596         if (opt_6)
 597                 vflag |= INP_IPV6;
 598
 599         switch (proto) {
 600         case IPPROTO_TCP:
 601                 varname = "net.inet.tcp.pcblist";
 602                 protoname = "tcp";
 603                 break;
 604         case IPPROTO_UDP:
 605                 varname = "net.inet.udp.pcblist";
 606                 protoname = "udp";
 607                 break;
 608         case IPPROTO_DIVERT:
 609                 varname = "net.inet.divert.pcblist";
 610                 protoname = "div";
 611                 break;
 612         default:
 613                 errx(1, "protocol %d not supported", proto);
 614         }
 615
 616         buf = NULL;
 617         bufsize = 8192;
 618         retry = 5;
 619         do {
 620                 for (;;) {
 621                         if ((buf = realloc(buf, bufsize)) == NULL)
 622                                 err(1, "realloc()");
 623                         len = bufsize;
 624                         if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
 625                                 break;
 626                         if (errno == ENOENT)
 627                                 goto out;
 628                         if (errno != ENOMEM || len != bufsize)
 629                                 err(1, "sysctlbyname()");
 630                         bufsize *= 2;
 631                 }
 632                 xig = (struct xinpgen *)buf;
 633                 exig = (struct xinpgen *)(void *)
 634                     ((char *)buf + len - sizeof *exig);
 635                 if (xig->xig_len != sizeof *xig ||
 636                     exig->xig_len != sizeof *exig)
 637                         errx(1, "struct xinpgen size mismatch");
 638         } while (xig->xig_gen != exig->xig_gen && retry--);
 639
 640         if (xig->xig_gen != exig->xig_gen && opt_v)
 641                 warnx("warning: data may be inconsistent");
 642
 643         for (;;) {
 644                 xig = (struct xinpgen *)(void *)((char *)xig + xig->xig_len);
 645                 if (xig >= exig)
 646                         break;
 647                 switch (proto) {
 648                 case IPPROTO_TCP:
 649                         xtp = (struct xtcpcb *)xig;
 650                         xip = &xtp->xt_inp;
 651                         if (xtp->xt_len != sizeof(*xtp)) {
 652                                 warnx("struct xtcpcb size mismatch");
 653                                 goto out;
 654                         }
 655                         protoname = xtp->t_flags & TF_TOE ? "toe" : "tcp";
 656                         break;
 657                 case IPPROTO_UDP:
 658                 case IPPROTO_DIVERT:
 659                         xip = (struct xinpcb *)xig;
 660                         if (xip->xi_len != sizeof(*xip)) {
 661                                 warnx("struct xinpcb size mismatch");
 662                                 goto out;
 663                         }
 664                         break;
 665                 default:
 666                         errx(1, "protocol %d not supported", proto);
 667                 }
 668                 so = &xip->xi_socket;
 669                 if ((xip->inp_vflag & vflag) == 0)
 670                         continue;
 671                 if (xip->inp_vflag & INP_IPV4) {
 672                         if ((xip->inp_fport == 0 && !opt_l) ||
 673                             (xip->inp_fport != 0 && !opt_c))
 674                                 continue;
 675 #define __IN_IS_ADDR_LOOPBACK(pina) \
 676         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 677                         if (opt_L &&
 678                             (__IN_IS_ADDR_LOOPBACK(&xip->inp_faddr) ||
 679                              __IN_IS_ADDR_LOOPBACK(&xip->inp_laddr)))
 680                                 continue;
 681 #undef  __IN_IS_ADDR_LOOPBACK
 682                 } else if (xip->inp_vflag & INP_IPV6) {
 683                         if ((xip->inp_fport == 0 && !opt_l) ||
 684                             (xip->inp_fport != 0 && !opt_c))
 685                                 continue;
 686                         if (opt_L &&
 687                             (IN6_IS_ADDR_LOOPBACK(&xip->in6p_faddr) ||
 688                              IN6_IS_ADDR_LOOPBACK(&xip->in6p_laddr)))
 689                                 continue;
 690                 } else {
 691                         if (opt_v)
 692                                 warnx("invalid vflag 0x%x", xip->inp_vflag);
 693                         continue;
 694                 }
 695                 if ((sock = calloc(1, sizeof(*sock))) == NULL)
 696                         err(1, "malloc()");
 697                 if ((laddr = calloc(1, sizeof *laddr)) == NULL)
 698                         err(1, "malloc()");
 699                 if ((faddr = calloc(1, sizeof *faddr)) == NULL)
 700                         err(1, "malloc()");
 701                 sock->socket = so->xso_so;
 702                 sock->proto = proto;
 703                 sock->inp_gencnt = xip->inp_gencnt;
 704                 if (xip->inp_vflag & INP_IPV4) {
 705                         sock->family = AF_INET;
 706                         sockaddr(&laddr->address, sock->family,
 707                             &xip->inp_laddr, xip->inp_lport);
 708                         sockaddr(&faddr->address, sock->family,
 709                             &xip->inp_faddr, xip->inp_fport);
 710                 } else if (xip->inp_vflag & INP_IPV6) {
 711                         sock->family = AF_INET6;
 712                         sockaddr(&laddr->address, sock->family,
 713                             &xip->in6p_laddr, xip->inp_lport);
 714                         sockaddr(&faddr->address, sock->family,
 715                             &xip->in6p_faddr, xip->inp_fport);
 716                 }
 717                 if (proto == IPPROTO_TCP)
 718                         faddr->encaps_port = xtp->xt_encaps_port;
 719                 laddr->next = NULL;
 720                 faddr->next = NULL;
 721                 sock->laddr = laddr;
 722                 sock->faddr = faddr;
 723                 sock->vflag = xip->inp_vflag;
 724                 if (proto == IPPROTO_TCP) {
 725                         sock->state = xtp->t_state;
 726                         memcpy(sock->stack, xtp->xt_stack,
 727                             TCP_FUNCTION_NAME_LEN_MAX);
 728                         memcpy(sock->cc, xtp->xt_cc, TCP_CA_NAME_MAX);
 729                 }
 730                 sock->protoname = protoname;
 731                 hash = (int)((uintptr_t)sock->socket % HASHSIZE);
 732                 sock->next = sockhash[hash];
 733                 sockhash[hash] = sock;
 734         }
 735 out:
 736         free(buf);
 737 }
 738
 739 static void
 740 gather_unix(int proto)
 741 {
 742         struct xunpgen *xug, *exug;
 743         struct xunpcb *xup;
 744         struct sock *sock;
 745         struct addr *laddr, *faddr;
 746         const char *varname, *protoname;
 747         size_t len, bufsize;
 748         void *buf;
 749         int hash, retry;
 750
 751         switch (proto) {
 752         case SOCK_STREAM:
 753                 varname = "net.local.stream.pcblist";
 754                 protoname = "stream";
 755                 break;
 756         case SOCK_DGRAM:
 757                 varname = "net.local.dgram.pcblist";
 758                 protoname = "dgram";
 759                 break;
 760         case SOCK_SEQPACKET:
 761                 varname = "net.local.seqpacket.pcblist";
 762                 protoname = "seqpac";
 763                 break;
 764         default:
 765                 abort();
 766         }
 767         buf = NULL;
 768         bufsize = 8192;
 769         retry = 5;
 770         do {
 771                 for (;;) {
 772                         if ((buf = realloc(buf, bufsize)) == NULL)
 773                                 err(1, "realloc()");
 774                         len = bufsize;
 775                         if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
 776                                 break;
 777                         if (errno != ENOMEM || len != bufsize)
 778                                 err(1, "sysctlbyname()");
 779                         bufsize *= 2;
 780                 }
 781                 xug = (struct xunpgen *)buf;
 782                 exug = (struct xunpgen *)(void *)
 783                     ((char *)buf + len - sizeof(*exug));
 784                 if (xug->xug_len != sizeof(*xug) ||
 785                     exug->xug_len != sizeof(*exug)) {
 786                         warnx("struct xinpgen size mismatch");
 787                         goto out;
 788                 }
 789         } while (xug->xug_gen != exug->xug_gen && retry--);
 790
 791         if (xug->xug_gen != exug->xug_gen && opt_v)
 792                 warnx("warning: data may be inconsistent");
 793
 794         for (;;) {
 795                 xug = (struct xunpgen *)(void *)((char *)xug + xug->xug_len);
 796                 if (xug >= exug)
 797                         break;
 798                 xup = (struct xunpcb *)xug;
 799                 if (xup->xu_len != sizeof(*xup)) {
 800                         warnx("struct xunpcb size mismatch");
 801                         goto out;
 802                 }
 803                 if ((xup->unp_conn == 0 && !opt_l) ||
 804                     (xup->unp_conn != 0 && !opt_c))
 805                         continue;
 806                 if ((sock = calloc(1, sizeof(*sock))) == NULL)
 807                         err(1, "malloc()");
 808                 if ((laddr = calloc(1, sizeof *laddr)) == NULL)
 809                         err(1, "malloc()");
 810                 if ((faddr = calloc(1, sizeof *faddr)) == NULL)
 811                         err(1, "malloc()");
 812                 sock->socket = xup->xu_socket.xso_so;
 813                 sock->pcb = xup->xu_unpp;
 814                 sock->proto = proto;
 815                 sock->family = AF_UNIX;
 816                 sock->protoname = protoname;
 817                 if (xup->xu_addr.sun_family == AF_UNIX)
 818                         laddr->address =
 819                             *(struct sockaddr_storage *)(void *)&xup->xu_addr;
 820                 else if (xup->unp_conn != 0)
 821                         *(kvaddr_t*)&(faddr->address) = xup->unp_conn;
 822                 laddr->next = NULL;
 823                 faddr->next = NULL;
 824                 sock->laddr = laddr;
 825                 sock->faddr = faddr;
 826                 hash = (int)((uintptr_t)sock->socket % HASHSIZE);
 827                 sock->next = sockhash[hash];
 828                 sockhash[hash] = sock;
 829         }
 830 out:
 831         free(buf);
 832 }
 833
 834 static void
 835 getfiles(void)
 836 {
 837         size_t len, olen;
 838
 839         olen = len = sizeof(*xfiles);
 840         if ((xfiles = malloc(len)) == NULL)
 841                 err(1, "malloc()");
 842         while (sysctlbyname("kern.file", xfiles, &len, 0, 0) == -1) {
 843                 if (errno != ENOMEM || len != olen)
 844                         err(1, "sysctlbyname()");
 845                 olen = len *= 2;
 846                 if ((xfiles = realloc(xfiles, len)) == NULL)
 847                         err(1, "realloc()");
 848         }
 849         if (len > 0 && xfiles->xf_size != sizeof(*xfiles))
 850                 errx(1, "struct xfile size mismatch");
 851         nxfiles = len / sizeof(*xfiles);
 852 }
 853
 854 static int
 855 printaddr(struct sockaddr_storage *ss)
 856 {
 857         struct sockaddr_un *sun;
 858         char addrstr[NI_MAXHOST] = { '\0', '\0' };
 859         int error, off, port = 0;
 860
 861         switch (ss->ss_family) {
 862         case AF_INET:
 863                 if (sstosin(ss)->sin_addr.s_addr == INADDR_ANY)
 864                         addrstr[0] = '*';
 865                 port = ntohs(sstosin(ss)->sin_port);
 866                 break;
 867         case AF_INET6:
 868                 if (IN6_IS_ADDR_UNSPECIFIED(&sstosin6(ss)->sin6_addr))
 869                         addrstr[0] = '*';
 870                 port = ntohs(sstosin6(ss)->sin6_port);
 871                 break;
 872         case AF_UNIX:
 873                 sun = sstosun(ss);
 874                 off = (int)((char *)&sun->sun_path - (char *)sun);
 875                 return (xprintf("%.*s", sun->sun_len - off, sun->sun_path));
 876         }
 877         if (addrstr[0] == '\0') {
 878                 error = getnameinfo(sstosa(ss), ss->ss_len, addrstr,
 879                     sizeof(addrstr), NULL, 0, NI_NUMERICHOST);
 880                 if (error)
 881                         errx(1, "getnameinfo()");
 882         }
 883         if (port == 0)
 884                 return xprintf("%s:*", addrstr);
 885         else
 886                 return xprintf("%s:%d", addrstr, port);
 887 }
 888
 889 static const char *
 890 getprocname(pid_t pid)
 891 {
 892         static struct kinfo_proc proc;
 893         size_t len;
 894         int mib[4];
 895
 896         mib[0] = CTL_KERN;
 897         mib[1] = KERN_PROC;
 898         mib[2] = KERN_PROC_PID;
 899         mib[3] = (int)pid;
 900         len = sizeof(proc);
 901         if (sysctl(mib, nitems(mib), &proc, &len, NULL, 0) == -1) {
 902                 /* Do not warn if the process exits before we get its name. */
 903                 if (errno != ESRCH)
 904                         warn("sysctl()");
 905                 return ("??");
 906         }
 907         return (proc.ki_comm);
 908 }
 909
 910 static int
 911 getprocjid(pid_t pid)
 912 {
 913         static struct kinfo_proc proc;
 914         size_t len;
 915         int mib[4];
 916
 917         mib[0] = CTL_KERN;
 918         mib[1] = KERN_PROC;
 919         mib[2] = KERN_PROC_PID;
 920         mib[3] = (int)pid;
 921         len = sizeof(proc);
 922         if (sysctl(mib, nitems(mib), &proc, &len, NULL, 0) == -1) {
 923                 /* Do not warn if the process exits before we get its jid. */
 924                 if (errno != ESRCH)
 925                         warn("sysctl()");
 926                 return (-1);
 927         }
 928         return (proc.ki_jid);
 929 }
 930
 931 static int
 932 check_ports(struct sock *s)
 933 {
 934         int port;
 935         struct addr *addr;
 936
 937         if (ports == NULL)
 938                 return (1);
 939         if ((s->family != AF_INET) && (s->family != AF_INET6))
 940                 return (1);
 941         for (addr = s->laddr; addr != NULL; addr = addr->next) {
 942                 if (s->family == AF_INET)
 943                         port = ntohs(sstosin(&addr->address)->sin_port);
 944                 else
 945                         port = ntohs(sstosin6(&addr->address)->sin6_port);
 946                 if (CHK_PORT(port))
 947                         return (1);
 948         }
 949         for (addr = s->faddr; addr != NULL; addr = addr->next) {
 950                 if (s->family == AF_INET)
 951                         port = ntohs(sstosin(&addr->address)->sin_port);
 952                 else
 953                         port = ntohs(sstosin6(&addr->address)->sin6_port);
 954                 if (CHK_PORT(port))
 955                         return (1);
 956         }
 957         return (0);
 958 }
 959
 960 static const char *
 961 sctp_conn_state(int state)
 962 {
 963         switch (state) {
 964         case SCTP_CLOSED:
 965                 return "CLOSED";
 966                 break;
 967         case SCTP_BOUND:
 968                 return "BOUND";
 969                 break;
 970         case SCTP_LISTEN:
 971                 return "LISTEN";
 972                 break;
 973         case SCTP_COOKIE_WAIT:
 974                 return "COOKIE_WAIT";
 975                 break;
 976         case SCTP_COOKIE_ECHOED:
 977                 return "COOKIE_ECHOED";
 978                 break;
 979         case SCTP_ESTABLISHED:
 980                 return "ESTABLISHED";
 981                 break;
 982         case SCTP_SHUTDOWN_SENT:
 983                 return "SHUTDOWN_SENT";
 984                 break;
 985         case SCTP_SHUTDOWN_RECEIVED:
 986                 return "SHUTDOWN_RECEIVED";
 987                 break;
 988         case SCTP_SHUTDOWN_ACK_SENT:
 989                 return "SHUTDOWN_ACK_SENT";
 990                 break;
 991         case SCTP_SHUTDOWN_PENDING:
 992                 return "SHUTDOWN_PENDING";
 993                 break;
 994         default:
 995                 return "UNKNOWN";
 996                 break;
 997         }
 998 }
 999
1000 static const char *
1001 sctp_path_state(int state)
1002 {
1003         switch (state) {
1004         case SCTP_UNCONFIRMED:
1005                 return "UNCONFIRMED";
1006                 break;
1007         case SCTP_ACTIVE:
1008                 return "ACTIVE";
1009                 break;
1010         case SCTP_INACTIVE:
1011                 return "INACTIVE";
1012                 break;
1013         default:
1014                 return "UNKNOWN";
1015                 break;
1016         }
1017 }
1018
1019 static void
1020 displaysock(struct sock *s, int pos)
1021 {
1022         kvaddr_t p;
1023         int hash, first, offset;
1024         struct addr *laddr, *faddr;
1025         struct sock *s_tmp;
1026
1027         while (pos < 29)
1028                 pos += xprintf(" ");
1029         pos += xprintf("%s", s->protoname);
1030         if (s->vflag & INP_IPV4)
1031                 pos += xprintf("4");
1032         if (s->vflag & INP_IPV6)
1033                 pos += xprintf("6");
1034         if (s->vflag & (INP_IPV4 | INP_IPV6))
1035                 pos += xprintf(" ");
1036         laddr = s->laddr;
1037         faddr = s->faddr;
1038         first = 1;
1039         while (laddr != NULL || faddr != NULL) {
1040                 offset = 36;
1041                 while (pos < offset)
1042                         pos += xprintf(" ");
1043                 switch (s->family) {
1044                 case AF_INET:
1045                 case AF_INET6:
1046                         if (laddr != NULL) {
1047                                 pos += printaddr(&laddr->address);
1048                                 if (s->family == AF_INET6 && pos >= 58)
1049                                         pos += xprintf(" ");
1050                         }
1051                         offset += opt_w ? 46 : 22;
1052                         while (pos < offset)
1053                                 pos += xprintf(" ");
1054                         if (faddr != NULL)
1055                                 pos += printaddr(&faddr->address);
1056                         offset += opt_w ? 46 : 22;
1057                         break;
1058                 case AF_UNIX:
1059                         if ((laddr == NULL) || (faddr == NULL))
1060                                 errx(1, "laddr = %p or faddr = %p is NULL",
1061                                     (void *)laddr, (void *)faddr);
1062                         /* server */
1063                         if (laddr->address.ss_len > 0) {
1064                                 pos += printaddr(&laddr->address);
1065                                 break;
1066                         }
1067                         /* client */
1068                         p = *(kvaddr_t*)&(faddr->address);
1069                         if (p == 0) {
1070                                 pos += xprintf("(not connected)");
1071                                 offset += opt_w ? 92 : 44;
1072                                 break;
1073                         }
1074                         pos += xprintf("-> ");
1075                         for (hash = 0; hash < HASHSIZE; ++hash) {
1076                                 for (s_tmp = sockhash[hash];
1077                                     s_tmp != NULL;
1078                                     s_tmp = s_tmp->next)
1079                                         if (s_tmp->pcb == p)
1080                                                 break;
1081                                 if (s_tmp != NULL)
1082                                         break;
1083                         }
1084                         if (s_tmp == NULL || s_tmp->laddr == NULL ||
1085                             s_tmp->laddr->address.ss_len == 0)
1086                                 pos += xprintf("??");
1087                         else
1088                                 pos += printaddr(&s_tmp->laddr->address);
1089                         offset += opt_w ? 92 : 44;
1090                         break;
1091                 default:
1092                         abort();
1093                 }
1094                 if (opt_i) {
1095                         if (s->proto == IPPROTO_TCP ||
1096                             s->proto == IPPROTO_UDP) {
1097                                 while (pos < offset)
1098                                         pos += xprintf(" ");
1099                                 pos += xprintf("%" PRIu64, s->inp_gencnt);
1100                         }
1101                         offset += 9;
1102                 }
1103                 if (opt_U) {
1104                         if (faddr != NULL &&
1105                             ((s->proto == IPPROTO_SCTP &&
1106                               s->state != SCTP_CLOSED &&
1107                               s->state != SCTP_BOUND &&
1108                               s->state != SCTP_LISTEN) ||
1109                              (s->proto == IPPROTO_TCP &&
1110                               s->state != TCPS_CLOSED &&
1111                               s->state != TCPS_LISTEN))) {
1112                                 while (pos < offset)
1113                                         pos += xprintf(" ");
1114                                 pos += xprintf("%u",
1115                                     ntohs(faddr->encaps_port));
1116                         }
1117                         offset += 7;
1118                 }
1119                 if (opt_s) {
1120                         if (faddr != NULL &&
1121                             s->proto == IPPROTO_SCTP &&
1122                             s->state != SCTP_CLOSED &&
1123                             s->state != SCTP_BOUND &&
1124                             s->state != SCTP_LISTEN) {
1125                                 while (pos < offset)
1126                                         pos += xprintf(" ");
1127                                 pos += xprintf("%s",
1128                                     sctp_path_state(faddr->state));
1129                         }
1130                         offset += 13;
1131                 }
1132                 if (first) {
1133                         if (opt_s) {
1134                                 if (s->proto == IPPROTO_SCTP ||
1135                                     s->proto == IPPROTO_TCP) {
1136                                         while (pos < offset)
1137                                                 pos += xprintf(" ");
1138                                         switch (s->proto) {
1139                                         case IPPROTO_SCTP:
1140                                                 pos += xprintf("%s",
1141                                                     sctp_conn_state(s->state));
1142                                                 break;
1143                                         case IPPROTO_TCP:
1144                                                 if (s->state >= 0 &&
1145                                                     s->state < TCP_NSTATES)
1146                                                         pos += xprintf("%s",
1147                                                             tcpstates[s->state]);
1148                                                 else
1149                                                         pos += xprintf("?");
1150                                                 break;
1151                                         }
1152                                 }
1153                                 offset += 13;
1154                         }
1155                         if (opt_S) {
1156                                 if (s->proto == IPPROTO_TCP) {
1157                                         while (pos < offset)
1158                                                 pos += xprintf(" ");
1159                                         pos += xprintf("%.*s",
1160                                             TCP_FUNCTION_NAME_LEN_MAX,
1161                                             s->stack);
1162                                 }
1163                                 offset += TCP_FUNCTION_NAME_LEN_MAX + 1;
1164                         }
1165                         if (opt_C) {
1166                                 if (s->proto == IPPROTO_TCP) {
1167                                         while (pos < offset)
1168                                                 pos += xprintf(" ");
1169                                         xprintf("%.*s", TCP_CA_NAME_MAX, s->cc);
1170                                 }
1171                                 offset += TCP_CA_NAME_MAX + 1;
1172                         }
1173                 }
1174                 if (laddr != NULL)
1175                         laddr = laddr->next;
1176                 if (faddr != NULL)
1177                         faddr = faddr->next;
1178                 if ((laddr != NULL) || (faddr != NULL)) {
1179                         xprintf("\n");
1180                         pos = 0;
1181                 }
1182                 first = 0;
1183         }
1184         xprintf("\n");
1185 }
1186
1187 static void
1188 display(void)
1189 {
1190         struct passwd *pwd;
1191         struct xfile *xf;
1192         struct sock *s;
1193         int hash, n, pos;
1194
1195         if (opt_q != 1) {
1196                 printf("%-8s %-10s %-5s %-2s %-6s %-*s %-*s",
1197                     "USER", "COMMAND", "PID", "FD", "PROTO",
1198                     opt_w ? 45 : 21, "LOCAL ADDRESS",
1199                     opt_w ? 45 : 21, "FOREIGN ADDRESS");
1200                 if (opt_i)
1201                         printf(" %-8s", "ID");
1202                 if (opt_U)
1203                         printf(" %-6s", "ENCAPS");
1204                 if (opt_s) {
1205                         printf(" %-12s", "PATH STATE");
1206                         printf(" %-12s", "CONN STATE");
1207                 }
1208                 if (opt_S)
1209                         printf(" %-*.*s", TCP_FUNCTION_NAME_LEN_MAX,
1210                             TCP_FUNCTION_NAME_LEN_MAX, "STACK");
1211                 if (opt_C)
1212                         printf(" %-.*s", TCP_CA_NAME_MAX, "CC");
1213                 printf("\n");
1214         }
1215         setpassent(1);
1216         for (xf = xfiles, n = 0; n < nxfiles; ++n, ++xf) {
1217                 if (xf->xf_data == 0)
1218                         continue;
1219                 if (opt_j >= 0 && opt_j != getprocjid(xf->xf_pid))
1220                         continue;
1221                 hash = (int)((uintptr_t)xf->xf_data % HASHSIZE);
1222                 for (s = sockhash[hash]; s != NULL; s = s->next) {
1223                         if (s->socket != xf->xf_data)
1224                                 continue;
1225                         if (!check_ports(s))
1226                                 continue;
1227                         s->shown = 1;
1228                         pos = 0;
1229                         if (opt_n || (pwd = getpwuid(xf->xf_uid)) == NULL)
1230                                 pos += xprintf("%lu ", (u_long)xf->xf_uid);
1231                         else
1232                                 pos += xprintf("%s ", pwd->pw_name);
1233                         while (pos < 9)
1234                                 pos += xprintf(" ");
1235                         pos += xprintf("%.10s", getprocname(xf->xf_pid));
1236                         while (pos < 20)
1237                                 pos += xprintf(" ");
1238                         pos += xprintf("%lu ", (u_long)xf->xf_pid);
1239                         while (pos < 26)
1240                                 pos += xprintf(" ");
1241                         pos += xprintf("%d ", xf->xf_fd);
1242                         displaysock(s, pos);
1243                 }
1244         }
1245         if (opt_j >= 0)
1246                 return;
1247         for (hash = 0; hash < HASHSIZE; hash++) {
1248                 for (s = sockhash[hash]; s != NULL; s = s->next) {
1249                         if (s->shown)
1250                                 continue;
1251                         if (!check_ports(s))
1252                                 continue;
1253                         pos = 0;
1254                         pos += xprintf("%-8s %-10s %-5s %-2s ",
1255                             "?", "?", "?", "?");
1256                         displaysock(s, pos);
1257                 }
1258         }
1259 }
1260
1261 static int
1262 set_default_protos(void)
1263 {
1264         struct protoent *prot;
1265         const char *pname;
1266         size_t pindex;
1267
1268         init_protos(default_numprotos);
1269
1270         for (pindex = 0; pindex < default_numprotos; pindex++) {
1271                 pname = default_protos[pindex];
1272                 prot = getprotobyname(pname);
1273                 if (prot == NULL)
1274                         err(1, "getprotobyname: %s", pname);
1275                 protos[pindex] = prot->p_proto;
1276         }
1277         numprotos = pindex;
1278         return (pindex);
1279 }
1280
1281 /*
1282  * Return the vnet property of the jail, or -1 on error.
1283  */
1284 static int
1285 jail_getvnet(int jid)
1286 {
1287         struct iovec jiov[6];
1288         int vnet;
1289
1290         vnet = -1;
1291         jiov[0].iov_base = __DECONST(char *, "jid");
1292         jiov[0].iov_len = sizeof("jid");
1293         jiov[1].iov_base = &jid;
1294         jiov[1].iov_len = sizeof(jid);
1295         jiov[2].iov_base = __DECONST(char *, "vnet");
1296         jiov[2].iov_len = sizeof("vnet");
1297         jiov[3].iov_base = &vnet;
1298         jiov[3].iov_len = sizeof(vnet);
1299         jiov[4].iov_base = __DECONST(char *, "errmsg");
1300         jiov[4].iov_len = sizeof("errmsg");
1301         jiov[5].iov_base = jail_errmsg;
1302         jiov[5].iov_len = JAIL_ERRMSGLEN;
1303         jail_errmsg[0] = '\0';
1304         if (jail_get(jiov, nitems(jiov), 0) < 0) {
1305                 if (!jail_errmsg[0])
1306                         snprintf(jail_errmsg, JAIL_ERRMSGLEN,
1307                             "jail_get: %s", strerror(errno));
1308                 return (-1);
1309         }
1310         return (vnet);
1311 }
1312
1313 static void
1314 usage(void)
1315 {
1316         fprintf(stderr,
1317             "usage: sockstat [-46CciLlnqSsUuvw] [-j jid] [-p ports] [-P protocols]\n");
1318         exit(1);
1319 }
1320
1321 int
1322 main(int argc, char *argv[])
1323 {
1324         int protos_defined = -1;
1325         int o, i;
1326
1327         opt_j = -1;
1328         while ((o = getopt(argc, argv, "46Ccij:Llnp:P:qSsUuvw")) != -1)
1329                 switch (o) {
1330                 case '4':
1331                         opt_4 = 1;
1332                         break;
1333                 case '6':
1334                         opt_6 = 1;
1335                         break;
1336                 case 'C':
1337                         opt_C = 1;
1338                         break;
1339                 case 'c':
1340                         opt_c = 1;
1341                         break;
1342                 case 'i':
1343                         opt_i = 1;
1344                         break;
1345                 case 'j':
1346                         opt_j = jail_getid(optarg);
1347                         if (opt_j < 0)
1348                                 errx(1, "%s", jail_errmsg);
1349                         break;
1350                 case 'L':
1351                         opt_L = 1;
1352                         break;
1353                 case 'l':
1354                         opt_l = 1;
1355                         break;
1356                 case 'n':
1357                         opt_n = 1;
1358                         break;
1359                 case 'p':
1360                         parse_ports(optarg);
1361                         break;
1362                 case 'P':
1363                         protos_defined = parse_protos(optarg);
1364                         break;
1365                 case 'q':
1366                         opt_q = 1;
1367                         break;
1368                 case 'S':
1369                         opt_S = 1;
1370                         break;
1371                 case 's':
1372                         opt_s = 1;
1373                         break;
1374                 case 'U':
1375                         opt_U = 1;
1376                         break;
1377                 case 'u':
1378                         opt_u = 1;
1379                         break;
1380                 case 'v':
1381                         ++opt_v;
1382                         break;
1383                 case 'w':
1384                         opt_w = 1;
1385                         break;
1386                 default:
1387                         usage();
1388                 }
1389
1390         argc -= optind;
1391         argv += optind;
1392
1393         if (argc > 0)
1394                 usage();
1395
1396         if (opt_j > 0) {
1397                 switch (jail_getvnet(opt_j)) {
1398                 case -1:
1399                         errx(2, "%s", jail_errmsg);
1400                 case JAIL_SYS_NEW:
1401                         if (jail_attach(opt_j) < 0)
1402                                 err(3, "jail_attach()");
1403                         /* Set back to -1 for normal output in vnet jail. */
1404                         opt_j = -1;
1405                         break;
1406                 default:
1407                         break;
1408                 }
1409         }
1410
1411         if ((!opt_4 && !opt_6) && protos_defined != -1)
1412                 opt_4 = opt_6 = 1;
1413         if (!opt_4 && !opt_6 && !opt_u)
1414                 opt_4 = opt_6 = opt_u = 1;
1415         if ((opt_4 || opt_6) && protos_defined == -1)
1416                 protos_defined = set_default_protos();
1417         if (!opt_c && !opt_l)
1418                 opt_c = opt_l = 1;
1419
1420         if (opt_4 || opt_6) {
1421                 for (i = 0; i < protos_defined; i++)
1422                         if (protos[i] == IPPROTO_SCTP)
1423                                 gather_sctp();
1424                         else
1425                                 gather_inet(protos[i]);
1426         }
1427
1428         if (opt_u || (protos_defined == -1 && !opt_4 && !opt_6)) {
1429                 gather_unix(SOCK_STREAM);
1430                 gather_unix(SOCK_DGRAM);
1431                 gather_unix(SOCK_SEQPACKET);
1432         }
1433         getfiles();
1434         display();
1435         exit(0);
1436 }