netstat.c

   1 /*
   2  * netstat    This file contains an implementation of the command
   3  *              that helps in debugging the networking modules.
   4  *
   5  * NET-TOOLS    A collection of programs that form the base set of the
   6  *              NET-3 Networking Distribution for the LINUX operating
   7  *              system.
   8  *
   9  * Version:     $Id: netstat.c,v 1.44 2001/08/26 05:25:21 ak Exp $
  10  *
  11  * Authors:     Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
  12  *              Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
  13  *              Phil Packer, <pep@wicked.demon.co.uk>
  14  *              Johannes Stille, <johannes@titan.os.open.de>
  15  *              Bernd Eckenfels, <net-tools@lina.inka.de>
  16  *              Phil Blundell <philb@gnu.org>
  17  *              Tuan Hoang <tqhoang@bigfoot.com>
  18  *
  19  * Tuned for NET3 by:
  20  *              Alan Cox, <A.Cox@swansea.ac.uk>
  21  *              Copyright (c) 1993  Fred Baumgarten
  22  *
  23  * Modified:
  24  *
  25  *960116 {1.01} Bernd Eckenfels:        verbose, cleanups
  26  *960204 {1.10} Bernd Eckenfels:        aftrans, usage, new route_info,
  27  *                                      DLFT_AF
  28  *960204 {1.11} Bernd Eckenfels:        netlink support
  29  *960204 {1.12} Bernd Eckenfels:        route_init()
  30  *960215 {1.13} Bernd Eckenfels:        netlink_print honors HAVE_
  31  *960217 {1.14} Bernd Eckenfels:        masq_info from Jos Vos and
  32  *                                      ax25_info from Jonathan Naylor.
  33  *960218 {1.15} Bernd Eckenfels:        ipx_info rewritten, -e for tcp/ipx
  34  *960220 {1.16} Bernd Eckenfels:        minor output reformats, -a for -x
  35  *960221 {1.17} Bernd Eckenfels:        route_init->getroute_init
  36  *960426 {1.18} Bernd Eckenfels:        new RTACTION, SYM/NUM, FIB/CACHE
  37  *960517 {1.19} Bernd Eckenfels:        usage() spelling fix and --unix inode,
  38  *                                      ':' is part of sock_addr for --inet
  39  *960822 {x.xx} Frank Strauss:          INET6 support
  40  *
  41  *970406 {1.33} Philip Copeland         Added snmp reporting support module -s
  42  *                                      code provided by Andi Kleen
  43  *                                      (relly needs to be kernel hooked but
  44  *                                      this will do in the meantime)
  45  *                                      minor header file misplacement tidy up.
  46  *980815 {1.xx} Stephane Fillod:       X.25 support
  47  *980411 {1.34} Arnaldo Carvalho        i18n: catgets -> gnu gettext, substitution
  48  *                                      of sprintf for snprintf
  49  *10/1998       Andi Kleen              Use new interface primitives.
  50  *990101 {1.36} Bernd Eckenfels         usage updated to include -s and -C -F,
  51  *                                      fixed netstat -rC output (lib/inet_gr.c)
  52  *                                      removed broken NETLINK Support
  53  *                                      fixed format for /proc/net/udp|tcp|raw
  54  *                                      added -w,-t,-u TcpExt support to -s
  55  *990131 {1.37} Jan Kratochvil          added -p for prg_cache() & friends
  56  *                                      Flames to <short@ucw.cz>.
  57  *              Tuan Hoang              added IGMP support for IPv4 and IPv6
  58  *
  59  *990420 {1.38} Tuan Hoang              removed a useless assignment from igmp_do_one()
  60  *20010404 {1.39} Arnaldo Carvalho de Melo - use setlocale
  61  *
  62  *              This program is free software; you can redistribute it
  63  *              and/or  modify it under  the terms of  the GNU General
  64  *              Public  License as  published  by  the  Free  Software
  65  *              Foundation;  either  version 2 of the License, or  (at
  66  *              your option) any later version.
  67  *
  68  */
  69 #include <errno.h>
  70 #include <stdio.h>
  71 #include <stdlib.h>
  72 #include <string.h>
  73 #include <strings.h>
  74 #include <unistd.h>
  75 #include <ctype.h>
  76 #include <fcntl.h>
  77 #include <netdb.h>
  78 #include <paths.h>
  79 #include <pwd.h>
  80 #include <getopt.h>
  81 #include <sys/param.h>
  82 #include <sys/socket.h>
  83 #include <arpa/inet.h>
  84 #include <netinet/in.h>
  85 #include <sys/ioctl.h>
  86 #include <net/if.h>
  87 #include <dirent.h>
  88
  89 #include "net-support.h"
  90 #include "pathnames.h"
  91 #include "version.h"
  92 #include "config.h"
  93 #include "intl.h"
  94 #include "sockets.h"
  95 #include "interface.h"
  96 #include "util.h"
  97
  98 #define PROGNAME_WIDTH 20
  99
 100 #if !defined(s6_addr32) && defined(in6a_words)
 101 #define s6_addr32 in6a_words    /* libinet6                     */
 102 #endif
 103
 104 /* prototypes for statistics.c */
 105 void parsesnmp(int, int, int);
 106 void inittab(void);
 107
 108 typedef enum {
 109     SS_FREE = 0,                /* not allocated                */
 110     SS_UNCONNECTED,             /* unconnected to any socket    */
 111     SS_CONNECTING,              /* in process of connecting     */
 112     SS_CONNECTED,               /* connected to socket          */
 113     SS_DISCONNECTING            /* in process of disconnecting  */
 114 } socket_state;
 115
 116 #define SO_ACCEPTCON    (1<<16) /* performed a listen           */
 117 #define SO_WAITDATA     (1<<17) /* wait data to read            */
 118 #define SO_NOSPACE      (1<<18) /* no space to write            */
 119
 120 #define DFLT_AF "inet"
 121
 122 #define FEATURE_NETSTAT
 123 #include "lib/net-features.h"
 124
 125 char *Release = RELEASE, *Version = "netstat 1.42 (2001-04-15)", *Signature = "Fred Baumgarten, Alan Cox, Bernd Eckenfels, Phil Blundell, Tuan Hoang and others";
 126
 127
 128 #define E_READ  -1
 129 #define E_IOCTL -3
 130
 131 int flag_int = 0;
 132 int flag_rou = 0;
 133 int flag_mas = 0;
 134 int flag_sta = 0;
 135
 136 int flag_all = 0;
 137 int flag_lst = 0;
 138 int flag_cnt = 0;
 139 int flag_deb = 0;
 140 int flag_not = 0;
 141 int flag_cf  = 0;
 142 int flag_opt = 0;
 143 int flag_raw = 0;
 144 int flag_tcp = 0;
 145 int flag_udp = 0;
 146 int flag_igmp= 0;
 147 int flag_rom = 0;
 148 int flag_exp = 1;
 149 int flag_prg = 0;
 150 int flag_arg = 0;
 151 int flag_ver = 0;
 152
 153 FILE *procinfo;
 154
 155 #define INFO_GUTS1(file,name,proc)                      \
 156   procinfo = fopen((file), "r");                        \
 157   if (procinfo == NULL) {                               \
 158     if (errno != ENOENT) {                              \
 159       perror((file));                                   \
 160       return -1;                                        \
 161     }                                                   \
 162     if (flag_arg || flag_ver)                           \
 163       ESYSNOT("netstat", (name));                       \
 164     if (flag_arg)                                       \
 165       rc = 1;                                           \
 166   } else {                                              \
 167     do {                                                \
 168       if (fgets(buffer, sizeof(buffer), procinfo))      \
 169         (proc)(lnr++, buffer);                          \
 170     } while (!feof(procinfo));                          \
 171     fclose(procinfo);                                   \
 172   }
 173
 174 #if HAVE_AFINET6
 175 #define INFO_GUTS2(file,proc)                           \
 176   lnr = 0;                                              \
 177   procinfo = fopen((file), "r");                        \
 178   if (procinfo != NULL) {                               \
 179     do {                                                \
 180       if (fgets(buffer, sizeof(buffer), procinfo))      \
 181         (proc)(lnr++, buffer);                          \
 182     } while (!feof(procinfo));                          \
 183     fclose(procinfo);                                   \
 184   }
 185 #else
 186 #define INFO_GUTS2(file,proc)
 187 #endif
 188
 189 #define INFO_GUTS3                                      \
 190  return rc;
 191
 192 #define INFO_GUTS6(file,file6,name,proc)                \
 193  char buffer[8192];                                     \
 194  int rc = 0;                                            \
 195  int lnr = 0;                                           \
 196  if (!flag_arg || flag_inet) {                          \
 197     INFO_GUTS1(file,name,proc)                          \
 198  }                                                      \
 199  if (!flag_arg || flag_inet6) {                         \
 200     INFO_GUTS2(file6,proc)                              \
 201  }                                                      \
 202  INFO_GUTS3
 203
 204 #define INFO_GUTS(file,name,proc)                       \
 205  char buffer[8192];                                     \
 206  int rc = 0;                                            \
 207  int lnr = 0;                                           \
 208  INFO_GUTS1(file,name,proc)                             \
 209  INFO_GUTS3
 210
 211 #define PROGNAME_WIDTHs PROGNAME_WIDTH1(PROGNAME_WIDTH)
 212 #define PROGNAME_WIDTH1(s) PROGNAME_WIDTH2(s)
 213 #define PROGNAME_WIDTH2(s) #s
 214
 215 #define PRG_HASH_SIZE 211
 216
 217 static struct prg_node {
 218     struct prg_node *next;
 219     int inode;
 220     char name[PROGNAME_WIDTH];
 221 } *prg_hash[PRG_HASH_SIZE];
 222
 223 static char prg_cache_loaded = 0;
 224
 225 #define PRG_HASHIT(x) ((x) % PRG_HASH_SIZE)
 226
 227 #define PROGNAME_BANNER "PID/Program name"
 228
 229 #define print_progname_banner() do { if (flag_prg) printf("%-" PROGNAME_WIDTHs "s"," " PROGNAME_BANNER); } while (0)
 230
 231 #define PRG_LOCAL_ADDRESS "local_address"
 232 #define PRG_INODE        "inode"
 233 #define PRG_SOCKET_PFX    "socket:["
 234 #define PRG_SOCKET_PFXl (strlen(PRG_SOCKET_PFX))
 235 #define PRG_SOCKET_PFX2   "[0000]:"
 236 #define PRG_SOCKET_PFX2l  (strlen(PRG_SOCKET_PFX2))
 237
 238
 239 #ifndef LINE_MAX
 240 #define LINE_MAX 4096
 241 #endif
 242
 243 #define PATH_PROC          "/proc"
 244 #define PATH_FD_SUFF    "fd"
 245 #define PATH_FD_SUFFl       strlen(PATH_FD_SUFF)
 246 #define PATH_PROC_X_FD      PATH_PROC "/%s/" PATH_FD_SUFF
 247 #define PATH_CMDLINE    "cmdline"
 248 #define PATH_CMDLINEl       strlen(PATH_CMDLINE)
 249 /* NOT working as of glibc-2.0.7: */
 250 #undef  DIRENT_HAVE_D_TYPE_WORKS
 251
 252 static void prg_cache_add(int inode, char *name)
 253 {
 254     unsigned hi = PRG_HASHIT(inode);
 255     struct prg_node **pnp,*pn;
 256
 257     prg_cache_loaded=2;
 258     for (pnp=prg_hash+hi;(pn=*pnp);pnp=&pn->next) {
 259         if (pn->inode==inode) {
 260             /* Some warning should be appropriate here
 261                as we got multiple processes for one i-node */
 262             return;
 263         }
 264     }
 265     if (!(*pnp=malloc(sizeof(**pnp))))
 266         return;
 267     pn=*pnp;
 268     pn->next=NULL;
 269     pn->inode=inode;
 270     if (strlen(name)>sizeof(pn->name)-1)
 271         name[sizeof(pn->name)-1]='\0';
 272     strcpy(pn->name,name);
 273 }
 274
 275 static const char *prg_cache_get(int inode)
 276 {
 277     unsigned hi=PRG_HASHIT(inode);
 278     struct prg_node *pn;
 279
 280     for (pn=prg_hash[hi];pn;pn=pn->next)
 281         if (pn->inode==inode) return(pn->name);
 282     return("-");
 283 }
 284
 285 static void prg_cache_clear(void)
 286 {
 287     struct prg_node **pnp,*pn;
 288
 289     if (prg_cache_loaded == 2)
 290         for (pnp=prg_hash;pnp<prg_hash+PRG_HASH_SIZE;pnp++)
 291             while ((pn=*pnp)) {
 292                 *pnp=pn->next;
 293                 free(pn);
 294             }
 295     prg_cache_loaded=0;
 296 }
 297
 298 static void extract_type_1_socket_inode(const char lname[], long * inode_p) {
 299
 300     /* If lname is of the form "socket:[12345]", extract the "12345"
 301        as *inode_p.  Otherwise, return -1 as *inode_p.
 302        */
 303
 304     if (strlen(lname) < PRG_SOCKET_PFXl+3) *inode_p = -1;
 305     else if (memcmp(lname, PRG_SOCKET_PFX, PRG_SOCKET_PFXl)) *inode_p = -1;
 306     else if (lname[strlen(lname)-1] != ']') *inode_p = -1;
 307     else {
 308         char inode_str[strlen(lname + 1)];  /* e.g. "12345" */
 309         const int inode_str_len = strlen(lname) - PRG_SOCKET_PFXl - 1;
 310         char *serr;
 311
 312         strncpy(inode_str, lname+PRG_SOCKET_PFXl, inode_str_len);
 313         inode_str[inode_str_len] = '\0';
 314         *inode_p = strtol(inode_str,&serr,0);
 315         if (!serr || *serr || *inode_p < 0 || *inode_p >= INT_MAX)
 316             *inode_p = -1;
 317     }
 318 }
 319
 320
 321
 322 static void extract_type_2_socket_inode(const char lname[], long * inode_p) {
 323
 324     /* If lname is of the form "[0000]:12345", extract the "12345"
 325        as *inode_p.  Otherwise, return -1 as *inode_p.
 326        */
 327
 328     if (strlen(lname) < PRG_SOCKET_PFX2l+1) *inode_p = -1;
 329     else if (memcmp(lname, PRG_SOCKET_PFX2, PRG_SOCKET_PFX2l)) *inode_p = -1;
 330     else {
 331         char *serr;
 332
 333         *inode_p=strtol(lname + PRG_SOCKET_PFX2l,&serr,0);
 334         if (!serr || *serr || *inode_p < 0 || *inode_p >= INT_MAX)
 335             *inode_p = -1;
 336     }
 337 }
 338
 339
 340
 341 static void prg_cache_load(void)
 342 {
 343     char line[LINE_MAX],eacces=0;
 344     int procfdlen,fd,cmdllen,lnamelen;
 345     char lname[30],cmdlbuf[512],finbuf[PROGNAME_WIDTH];
 346     long inode;
 347     const char *cs,*cmdlp;
 348     DIR *dirproc=NULL,*dirfd=NULL;
 349     struct dirent *direproc,*direfd;
 350
 351     if (prg_cache_loaded || !flag_prg) return;
 352     prg_cache_loaded=1;
 353     cmdlbuf[sizeof(cmdlbuf)-1]='\0';
 354     if (!(dirproc=opendir(PATH_PROC))) goto fail;
 355     while (errno=0,direproc=readdir(dirproc)) {
 356 #ifdef DIRENT_HAVE_D_TYPE_WORKS
 357         if (direproc->d_type!=DT_DIR) continue;
 358 #endif
 359         for (cs=direproc->d_name;*cs;cs++)
 360             if (!isdigit(*cs))
 361                 break;
 362         if (*cs)
 363             continue;
 364         procfdlen=snprintf(line,sizeof(line),PATH_PROC_X_FD,direproc->d_name);
 365         if (procfdlen<=0 || procfdlen>=sizeof(line)-5)
 366             continue;
 367         errno=0;
 368         dirfd=opendir(line);
 369         if (! dirfd) {
 370             if (errno==EACCES)
 371                 eacces=1;
 372             continue;
 373         }
 374         line[procfdlen] = '/';
 375         cmdlp = NULL;
 376         while ((direfd = readdir(dirfd))) {
 377 #ifdef DIRENT_HAVE_D_TYPE_WORKS
 378             if (direfd->d_type!=DT_LNK)
 379                 continue;
 380 #endif
 381             if (procfdlen+1+strlen(direfd->d_name)+1>sizeof(line))
 382                 continue;
 383             memcpy(line + procfdlen - PATH_FD_SUFFl, PATH_FD_SUFF "/",
 384                    PATH_FD_SUFFl+1);
 385             strcpy(line + procfdlen + 1, direfd->d_name);
 386             lnamelen=readlink(line,lname,sizeof(lname)-1);
 387             lname[lnamelen] = '\0';  /*make it a null-terminated string*/
 388
 389             extract_type_1_socket_inode(lname, &inode);
 390
 391             if (inode < 0) extract_type_2_socket_inode(lname, &inode);
 392
 393             if (inode < 0) continue;
 394
 395             if (!cmdlp) {
 396                 if (procfdlen - PATH_FD_SUFFl + PATH_CMDLINEl >=
 397                     sizeof(line) - 5)
 398                     continue;
 399                 strcpy(line + procfdlen-PATH_FD_SUFFl, PATH_CMDLINE);
 400                 fd = open(line, O_RDONLY);
 401                 if (fd < 0)
 402                     continue;
 403                 cmdllen = read(fd, cmdlbuf, sizeof(cmdlbuf) - 1);
 404                 if (close(fd))
 405                     continue;
 406                 if (cmdllen == -1)
 407                     continue;
 408                 if (cmdllen < sizeof(cmdlbuf) - 1)
 409                     cmdlbuf[cmdllen]='\0';
 410                 if ((cmdlp = strrchr(cmdlbuf, '/')))
 411                     cmdlp++;
 412                 else
 413                     cmdlp = cmdlbuf;
 414             }
 415
 416             snprintf(finbuf, sizeof(finbuf), "%s/%s", direproc->d_name, cmdlp);
 417             prg_cache_add(inode, finbuf);
 418         }
 419         closedir(dirfd);
 420         dirfd = NULL;
 421     }
 422     if (dirproc)
 423         closedir(dirproc);
 424     if (dirfd)
 425         closedir(dirfd);
 426     if (!eacces)
 427         return;
 428     if (prg_cache_loaded == 1) {
 429     fail:
 430         fprintf(stderr,_("(No info could be read for \"-p\": geteuid()=%d but you should be root.)\n"),
 431                 geteuid());
 432     }
 433     else
 434         fprintf(stderr, _("(Not all processes could be identified, non-owned process info\n"
 435                          " will not be shown, you would have to be root to see it all.)\n"));
 436 }
 437
 438 #if HAVE_AFNETROM
 439 static const char *netrom_state[] =
 440 {
 441     N_("LISTENING"),
 442     N_("CONN SENT"),
 443     N_("DISC SENT"),
 444     N_("ESTABLISHED")
 445 };
 446
 447 static int netrom_info(void)
 448 {
 449     FILE *f;
 450     char buffer[256], dev[16];
 451     int st, vs, vr, sendq, recvq, ret;
 452
 453     f = fopen(_PATH_PROCNET_NR, "r");
 454     if (f == NULL) {
 455         if (errno != ENOENT) {
 456             perror(_PATH_PROCNET_NR);
 457             return (-1);
 458         }
 459         if (flag_arg || flag_ver)
 460             ESYSNOT("netstat", "AF NETROM");
 461         if (flag_arg)
 462             return (1);
 463         else
 464             return (0);
 465     }
 466     printf(_("Active NET/ROM sockets\n"));
 467     printf(_("User       Dest       Source     Device  State        Vr/Vs    Send-Q  Recv-Q\n"));
 468     fgets(buffer, 256, f);
 469
 470     while (fgets(buffer, 256, f)) {
 471         buffer[9] = 0;
 472         buffer[19] = 0;
 473         buffer[29] = 0;
 474         ret = sscanf(buffer + 30, "%s %*x/%*x %*x/%*x %d %d %d %*d %*d/%*d %*d/%*d %*d/%*d %*d/%*d %*d/%*d %*d %d %d %*d",
 475                dev, &st, &vs, &vr, &sendq, &recvq);
 476         if (ret != 6) {
 477             printf(_("Problem reading data from %s\n"), _PATH_PROCNET_NR);
 478             continue;
 479         }
 480         printf("%-9s  %-9s  %-9s  %-6s  %-11s  %03d/%03d  %-6d  %-6d\n",
 481                buffer, buffer + 10, buffer + 20,
 482                dev,
 483                _(netrom_state[st]),
 484                vr, vs, sendq, recvq);
 485     }
 486     fclose(f);
 487     return 0;
 488 }
 489 #endif
 490
 491 /* These enums are used by IPX too. :-( */
 492 enum {
 493     TCP_ESTABLISHED = 1,
 494     TCP_SYN_SENT,
 495     TCP_SYN_RECV,
 496     TCP_FIN_WAIT1,
 497     TCP_FIN_WAIT2,
 498     TCP_TIME_WAIT,
 499     TCP_CLOSE,
 500     TCP_CLOSE_WAIT,
 501     TCP_LAST_ACK,
 502     TCP_LISTEN,
 503     TCP_CLOSING                 /* now a valid state */
 504 };
 505
 506 #if HAVE_AFINET || HAVE_AFINET6
 507
 508 static const char *tcp_state[] =
 509 {
 510     "",
 511     N_("ESTABLISHED"),
 512     N_("SYN_SENT"),
 513     N_("SYN_RECV"),
 514     N_("FIN_WAIT1"),
 515     N_("FIN_WAIT2"),
 516     N_("TIME_WAIT"),
 517     N_("CLOSE"),
 518     N_("CLOSE_WAIT"),
 519     N_("LAST_ACK"),
 520     N_("LISTEN"),
 521     N_("CLOSING")
 522 };
 523
 524 static void finish_this_one(int uid, unsigned long inode, const char *timers)
 525 {
 526     struct passwd *pw;
 527
 528     if (flag_exp > 1) {
 529         if (!(flag_not & FLAG_NUM_USER) && ((pw = getpwuid(uid)) != NULL))
 530             printf("%-10s ", pw->pw_name);
 531         else
 532             printf("%-10d ", uid);
 533         printf("%-10ld ",inode);
 534     }
 535     if (flag_prg)
 536         printf("%-" PROGNAME_WIDTHs "s",prg_cache_get(inode));
 537     if (flag_opt)
 538         printf("%s", timers);
 539     putchar('\n');
 540 }
 541
 542 static void igmp_do_one(int lnr, const char *line)
 543 {
 544     char mcast_addr[128];
 545 #if HAVE_AFINET6
 546     struct sockaddr_in6 mcastaddr;
 547     char addr6[INET6_ADDRSTRLEN];
 548     struct in6_addr in6;
 549     extern struct aftype inet6_aftype;
 550 #else
 551     struct sockaddr_in mcastaddr;
 552 #endif
 553     struct aftype *ap;
 554     static int idx_flag = 0;
 555     static int igmp6_flag = 0;
 556     static char device[16];
 557     int num, idx, refcnt;
 558
 559     if (lnr == 0) {
 560         /* IPV6 ONLY */
 561         /* igmp6 file does not have any comments on first line */
 562         if ( strstr( line, "Device" ) == NULL ) {
 563             igmp6_flag = 1;
 564         } else {
 565             /* IPV4 ONLY */
 566             /* 2.1.x kernels and up have Idx field */
 567             /* 2.0.x and below do not have Idx field */
 568             if ( strncmp( line, "Idx", strlen("Idx") ) == 0 )
 569                 idx_flag = 1;
 570             else
 571                 idx_flag = 0;
 572             return;
 573         }
 574     }
 575
 576     if (igmp6_flag) {    /* IPV6 */
 577 #if HAVE_AFINET6
 578         num = sscanf( line, "%d %15s %64[0-9A-Fa-f] %d", &idx, device, mcast_addr, &refcnt );
 579         if (num == 4) {
 580             /* Demangle what the kernel gives us */
 581             sscanf(mcast_addr, "%08X%08X%08X%08X",
 582                    &in6.s6_addr32[0], &in6.s6_addr32[1],
 583            &in6.s6_addr32[2], &in6.s6_addr32[3]);
 584             in6.s6_addr32[0] = htonl(in6.s6_addr32[0]);
 585             in6.s6_addr32[1] = htonl(in6.s6_addr32[1]);
 586             in6.s6_addr32[2] = htonl(in6.s6_addr32[2]);
 587             in6.s6_addr32[3] = htonl(in6.s6_addr32[3]);
 588         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 589             inet6_aftype.input(1, addr6, (struct sockaddr *) &mcastaddr);
 590             mcastaddr.sin6_family = AF_INET6;
 591         } else {
 592             fprintf(stderr, _("warning, got bogus igmp6 line %d.\n"), lnr);
 593             return;
 594         }
 595
 596         if ((ap = get_afntype(((struct sockaddr *) &mcastaddr)->sa_family)) == NULL) {
 597             fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 598                     ((struct sockaddr *) &mcastaddr)->sa_family);
 599             return;
 600         }
 601         safe_strncpy(mcast_addr, ap->sprint((struct sockaddr *) &mcastaddr,
 602                                       flag_not), sizeof(mcast_addr));
 603         printf("%-15s %-6d %s\n", device, refcnt, mcast_addr);
 604 #endif
 605     } else {    /* IPV4 */
 606 #if HAVE_AFINET
 607         if (line[0] != '\t') {
 608             if (idx_flag) {
 609                 if ((num = sscanf( line, "%d\t%10c", &idx, device)) < 2) {
 610                     fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 611                     return;
 612                 }
 613             } else {
 614                 if ( (num = sscanf( line, "%10c", device )) < 1 ) {
 615                     fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 616                     return;
 617                 }
 618             }
 619             device[10] = '\0';
 620             return;
 621         } else if ( line[0] == '\t' ) {
 622             if ( (num = sscanf(line, "\t%8[0-9A-Fa-f] %d", mcast_addr, &refcnt)) < 2 ) {
 623                 fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 624                 return;
 625             }
 626             sscanf( mcast_addr, "%X",
 627                     &((struct sockaddr_in *) &mcastaddr)->sin_addr.s_addr );
 628             ((struct sockaddr *) &mcastaddr)->sa_family = AF_INET;
 629         } else {
 630             fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 631             return;
 632         }
 633
 634         if ((ap = get_afntype(((struct sockaddr *) &mcastaddr)->sa_family)) == NULL) {
 635             fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 636                     ((struct sockaddr *) &mcastaddr)->sa_family);
 637             return;
 638         }
 639         safe_strncpy(mcast_addr, ap->sprint((struct sockaddr *) &mcastaddr,
 640                                       flag_not), sizeof(mcast_addr));
 641         printf("%-15s %-6d %s\n", device, refcnt, mcast_addr );
 642 #endif
 643     }    /* IPV4 */
 644 }
 645
 646 #if HAVE_AFX25
 647 static int x25_info(void)
 648 {
 649        FILE *f=fopen(_PATH_PROCNET_X25, "r");
 650        char buffer[256],dev[16];
 651        int st,vs,vr,sendq,recvq,lci;
 652        static char *x25_state[5]=
 653        {
 654                "LISTENING",
 655                "SABM_SENT",
 656                "DISC_SENT",
 657                "ESTABLISHED",
 658                "RECOVERY"
 659        };
 660        if(!(f=fopen(_PATH_PROCNET_X25, "r")))
 661        {
 662                if (errno != ENOENT) {
 663                        perror(_PATH_PROCNET_X25);
 664                        return(-1);
 665                }
 666                if (flag_arg || flag_ver)
 667                        ESYSNOT("netstat","AF X25");
 668                if (flag_arg)
 669                        return(1);
 670                else
 671                        return(0);
 672        }
 673        printf( _("Active X.25 sockets\n"));
 674        /* IMHO, Vr/Vs is not very usefull --SF */
 675        printf( _("Dest         Source          Device  LCI  State        Vr/Vs  Send-Q  Recv-Q\n"));
 676        fgets(buffer,256,f);
 677        while(fgets(buffer,256,f))
 678        {
 679                buffer[10]=0;
 680                buffer[20]=0;
 681                sscanf(buffer+22,"%s %d %d %d %d %*d %*d %*d %*d %*d %*d %d %d %*d",
 682                        dev,&lci,&st,&vs,&vr,&sendq,&recvq);
 683                if (!(flag_all || lci))
 684                        continue;
 685                printf("%-15s %-15s %-7s %-3d  %-11s  %02d/%02d  %-6d  %-6d\n",
 686                        buffer,buffer+11,
 687                        dev,
 688                        lci,
 689                        x25_state[st],
 690                        vr,vs,sendq,recvq);
 691        }
 692        fclose(f);
 693        return 0;
 694 }
 695 #endif
 696
 697 static int igmp_info(void)
 698 {
 699     INFO_GUTS6(_PATH_PROCNET_IGMP, _PATH_PROCNET_IGMP6, "AF INET (igmp)",
 700                igmp_do_one);
 701 }
 702
 703 static void tcp_do_one(int lnr, const char *line)
 704 {
 705     unsigned long rxq, txq, time_len, retr, inode;
 706     int num, local_port, rem_port, d, state, uid, timer_run, timeout;
 707     char rem_addr[128], local_addr[128], timers[64], buffer[1024], more[512];
 708     struct aftype *ap;
 709 #if HAVE_AFINET6
 710     struct sockaddr_in6 localaddr, remaddr;
 711     char addr6[INET6_ADDRSTRLEN];
 712     struct in6_addr in6;
 713     extern struct aftype inet6_aftype;
 714 #else
 715     struct sockaddr_in localaddr, remaddr;
 716 #endif
 717
 718     if (lnr == 0)
 719         return;
 720
 721     num = sscanf(line,
 722     "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
 723                  &d, local_addr, &local_port, rem_addr, &rem_port, &state,
 724                  &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
 725
 726     if (strlen(local_addr) > 8) {
 727 #if HAVE_AFINET6
 728         /* Demangle what the kernel gives us */
 729         sscanf(local_addr, "%08X%08X%08X%08X",
 730                &in6.s6_addr32[0], &in6.s6_addr32[1],
 731            &in6.s6_addr32[2], &in6.s6_addr32[3]);
 732         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 733         inet6_aftype.input(1, addr6, (struct sockaddr *) &localaddr);
 734         sscanf(rem_addr, "%08X%08X%08X%08X",
 735                &in6.s6_addr32[0], &in6.s6_addr32[1],
 736                &in6.s6_addr32[2], &in6.s6_addr32[3]);
 737         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 738         inet6_aftype.input(1, addr6, (struct sockaddr *) &remaddr);
 739         localaddr.sin6_family = AF_INET6;
 740         remaddr.sin6_family = AF_INET6;
 741 #endif
 742     } else {
 743         sscanf(local_addr, "%X",
 744                &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
 745         sscanf(rem_addr, "%X",
 746                &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
 747         ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
 748         ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
 749     }
 750
 751     if (num < 11) {
 752         fprintf(stderr, _("warning, got bogus tcp line.\n"));
 753         return;
 754     }
 755     if ((ap = get_afntype(((struct sockaddr *) &localaddr)->sa_family)) == NULL) {
 756         fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 757                 ((struct sockaddr *) &localaddr)->sa_family);
 758         return;
 759     }
 760     if (state == TCP_LISTEN) {
 761         time_len = 0;
 762         retr = 0L;
 763         rxq = 0L;
 764         txq = 0L;
 765     }
 766     safe_strncpy(local_addr, ap->sprint((struct sockaddr *) &localaddr,
 767                                         flag_not), sizeof(local_addr));
 768     safe_strncpy(rem_addr, ap->sprint((struct sockaddr *) &remaddr, flag_not),
 769                  sizeof(rem_addr));
 770     if (flag_all || (flag_lst && !rem_port) || (!flag_lst && rem_port)) {
 771         snprintf(buffer, sizeof(buffer), "%s",
 772                  get_sname(htons(local_port), "tcp",
 773                            flag_not & FLAG_NUM_PORT));
 774
 775         if ((strlen(local_addr) + strlen(buffer)) > 22)
 776             local_addr[22 - strlen(buffer)] = '\0';
 777
 778         strcat(local_addr, ":");
 779         strcat(local_addr, buffer);
 780         snprintf(buffer, sizeof(buffer), "%s",
 781                  get_sname(htons(rem_port), "tcp", flag_not & FLAG_NUM_PORT));
 782
 783         if ((strlen(rem_addr) + strlen(buffer)) > 22)
 784             rem_addr[22 - strlen(buffer)] = '\0';
 785
 786         strcat(rem_addr, ":");
 787         strcat(rem_addr, buffer);
 788         timers[0] = '\0';
 789
 790         if (flag_opt)
 791             switch (timer_run) {
 792             case 0:
 793                 snprintf(timers, sizeof(timers), _("off (0.00/%ld/%d)"), retr, timeout);
 794                 break;
 795
 796             case 1:
 797                 snprintf(timers, sizeof(timers), _("on (%2.2f/%ld/%d)"),
 798                          (double) time_len / HZ, retr, timeout);
 799                 break;
 800
 801             case 2:
 802                 snprintf(timers, sizeof(timers), _("keepalive (%2.2f/%ld/%d)"),
 803                          (double) time_len / HZ, retr, timeout);
 804                 break;
 805
 806             case 3:
 807                 snprintf(timers, sizeof(timers), _("timewait (%2.2f/%ld/%d)"),
 808                          (double) time_len / HZ, retr, timeout);
 809                 break;
 810
 811             default:
 812                 snprintf(timers, sizeof(timers), _("unkn-%d (%2.2f/%ld/%d)"),
 813                          timer_run, (double) time_len / HZ, retr, timeout);
 814                 break;
 815             }
 816         printf("tcp   %6ld %6ld %-*s %-*s %-12s",
 817                rxq, txq, max(23,strlen(local_addr)+1), local_addr, max(23,strlen(rem_addr)), rem_addr, _(tcp_state[state]));
 818
 819         finish_this_one(uid,inode,timers);
 820     }
 821 }
 822
 823 static int tcp_info(void)
 824 {
 825     INFO_GUTS6(_PATH_PROCNET_TCP, _PATH_PROCNET_TCP6, "AF INET (tcp)",
 826                tcp_do_one);
 827 }
 828
 829 static void udp_do_one(int lnr, const char *line)
 830 {
 831     char buffer[8192], local_addr[64], rem_addr[64];
 832     char *udp_state, timers[64], more[512];
 833     int num, local_port, rem_port, d, state, timer_run, uid, timeout;
 834 #if HAVE_AFINET6
 835     struct sockaddr_in6 localaddr, remaddr;
 836     char addr6[INET6_ADDRSTRLEN];
 837     struct in6_addr in6;
 838     extern struct aftype inet6_aftype;
 839 #else
 840     struct sockaddr_in localaddr, remaddr;
 841 #endif
 842     struct aftype *ap;
 843     unsigned long rxq, txq, time_len, retr, inode;
 844
 845     if (lnr == 0)
 846         return;
 847
 848     more[0] = '\0';
 849     num = sscanf(line,
 850                  "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
 851                  &d, local_addr, &local_port,
 852                  rem_addr, &rem_port, &state,
 853           &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
 854
 855     if (strlen(local_addr) > 8) {
 856 #if HAVE_AFINET6
 857         sscanf(local_addr, "%08X%08X%08X%08X",
 858                &in6.s6_addr32[0], &in6.s6_addr32[1],
 859                &in6.s6_addr32[2], &in6.s6_addr32[3]);
 860         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 861         inet6_aftype.input(1, addr6, (struct sockaddr *) &localaddr);
 862         sscanf(rem_addr, "%08X%08X%08X%08X",
 863                &in6.s6_addr32[0], &in6.s6_addr32[1],
 864                &in6.s6_addr32[2], &in6.s6_addr32[3]);
 865         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 866         inet6_aftype.input(1, addr6, (struct sockaddr *) &remaddr);
 867         localaddr.sin6_family = AF_INET6;
 868         remaddr.sin6_family = AF_INET6;
 869 #endif
 870     } else {
 871         sscanf(local_addr, "%X",
 872                &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
 873         sscanf(rem_addr, "%X",
 874                &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
 875         ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
 876         ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
 877     }
 878
 879     retr = 0L;
 880     if (!flag_opt)
 881         more[0] = '\0';
 882
 883     if (num < 10) {
 884         fprintf(stderr, _("warning, got bogus udp line.\n"));
 885         return;
 886     }
 887     if ((ap = get_afntype(((struct sockaddr *) &localaddr)->sa_family)) == NULL) {
 888         fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 889                 ((struct sockaddr *) &localaddr)->sa_family);
 890         return;
 891     }
 892     switch (state) {
 893     case TCP_ESTABLISHED:
 894         udp_state = _("ESTABLISHED");
 895         break;
 896
 897     case TCP_CLOSE:
 898         udp_state = "";
 899         break;
 900
 901     default:
 902         udp_state = _("UNKNOWN");
 903         break;
 904     }
 905
 906 #if HAVE_AFINET6
 907 #define notnull(A) (((A.sin6_family == AF_INET6) && \
 908          ((A.sin6_addr.s6_addr32[0]) ||            \
 909           (A.sin6_addr.s6_addr32[1]) ||            \
 910           (A.sin6_addr.s6_addr32[2]) ||            \
 911           (A.sin6_addr.s6_addr32[3]))) ||          \
 912         ((A.sin6_family == AF_INET) &&             \
 913          ((struct sockaddr_in *) &A)->sin_addr.s_addr))
 914 #else
 915 #define notnull(A) (A.sin_addr.s_addr)
 916 #endif
 917
 918     if (flag_all || (notnull(remaddr) && !flag_lst) || (!notnull(remaddr) && flag_lst))
 919     {
 920         safe_strncpy(local_addr, ap->sprint((struct sockaddr *) &localaddr,
 921                                             flag_not), sizeof(local_addr));
 922         snprintf(buffer, sizeof(buffer), "%s",
 923                  get_sname(htons(local_port), "udp",
 924                            flag_not & FLAG_NUM_PORT));
 925         if ((strlen(local_addr) + strlen(buffer)) > 22)
 926             local_addr[22 - strlen(buffer)] = '\0';
 927         strcat(local_addr, ":");
 928         strcat(local_addr, buffer);
 929
 930         snprintf(buffer, sizeof(buffer), "%s",
 931                  get_sname(htons(rem_port), "udp", flag_not & FLAG_NUM_PORT));
 932         safe_strncpy(rem_addr, ap->sprint((struct sockaddr *) &remaddr,
 933                                           flag_not), sizeof(rem_addr));
 934         if ((strlen(rem_addr) + strlen(buffer)) > 22)
 935             rem_addr[22 - strlen(buffer)] = '\0';
 936         strcat(rem_addr, ":");
 937         strcat(rem_addr, buffer);
 938
 939         timers[0] = '\0';
 940         if (flag_opt)
 941             switch (timer_run) {
 942             case 0:
 943                 snprintf(timers, sizeof(timers), _("off (0.00/%ld/%d)"), retr, timeout);
 944                 break;
 945
 946             case 1:
 947             case 2:
 948                 snprintf(timers, sizeof(timers), _("on%d (%2.2f/%ld/%d)"), timer_run, (double) time_len / 100, retr, timeout);
 949                 break;
 950
 951             default:
 952                 snprintf(timers, sizeof(timers), _("unkn-%d (%2.2f/%ld/%d)"), timer_run, (double) time_len / 100,
 953                          retr, timeout);
 954                 break;
 955             }
 956         printf("udp   %6ld %6ld %-23s %-23s %-12s",
 957                rxq, txq, local_addr, rem_addr, udp_state);
 958
 959         finish_this_one(uid,inode,timers);
 960     }
 961 }
 962
 963 static int udp_info(void)
 964 {
 965     INFO_GUTS6(_PATH_PROCNET_UDP, _PATH_PROCNET_UDP6, "AF INET (udp)",
 966                udp_do_one);
 967 }
 968
 969 static void raw_do_one(int lnr, const char *line)
 970 {
 971     char buffer[8192], local_addr[64], rem_addr[64];
 972     char timers[64], more[512];
 973     int num, local_port, rem_port, d, state, timer_run, uid, timeout;
 974 #if HAVE_AFINET6
 975     struct sockaddr_in6 localaddr, remaddr;
 976     char addr6[INET6_ADDRSTRLEN];
 977     struct in6_addr in6;
 978     extern struct aftype inet6_aftype;
 979 #else
 980     struct sockaddr_in localaddr, remaddr;
 981 #endif
 982     struct aftype *ap;
 983     unsigned long rxq, txq, time_len, retr, inode;
 984
 985     if (lnr == 0)
 986         return;
 987
 988     more[0] = '\0';
 989     num = sscanf(line,
 990                  "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
 991                  &d, local_addr, &local_port, rem_addr, &rem_port, &state,
 992           &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
 993
 994     if (strlen(local_addr) > 8) {
 995 #if HAVE_AFINET6
 996         sscanf(local_addr, "%08X%08X%08X%08X",
 997                &in6.s6_addr32[0], &in6.s6_addr32[1],
 998            &in6.s6_addr32[2], &in6.s6_addr32[3]);
 999     inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
1000         inet6_aftype.input(1, addr6, (struct sockaddr *) &localaddr);
1001         sscanf(rem_addr, "%08X%08X%08X%08X",
1002                &in6.s6_addr32[0], &in6.s6_addr32[1],
1003            &in6.s6_addr32[2], &in6.s6_addr32[3]);
1004     inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
1005         inet6_aftype.input(1, addr6, (struct sockaddr *) &remaddr);
1006         localaddr.sin6_family = AF_INET6;
1007         remaddr.sin6_family = AF_INET6;
1008 #endif
1009     } else {
1010         sscanf(local_addr, "%X",
1011                &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
1012         sscanf(rem_addr, "%X",
1013                &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
1014         ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
1015         ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
1016     }
1017 #if HAVE_AFINET6
1018     if ((ap = get_afntype(localaddr.sin6_family)) == NULL) {
1019         fprintf(stderr, _("netstat: unsupported address family %d !\n"), localaddr.sin6_family);
1020         return;
1021     }
1022 #else
1023     if ((ap = get_afntype(localaddr.sin_family)) == NULL) {
1024         fprintf(stderr, _("netstat: unsupported address family %d !\n"), localaddr.sin_family);
1025         return;
1026     }
1027 #endif
1028
1029     if (!flag_opt)
1030         more[0] = '\0';
1031
1032     if (num < 10) {
1033         fprintf(stderr, _("warning, got bogus raw line.\n"));
1034         return;
1035     }
1036
1037     if (flag_all || (notnull(remaddr) && !flag_lst) || (!notnull(remaddr) && flag_lst))
1038     {
1039         snprintf(buffer, sizeof(buffer), "%s",
1040                  get_sname(htons(local_port), "raw",
1041                            flag_not & FLAG_NUM_PORT));
1042         safe_strncpy(local_addr, ap->sprint((struct sockaddr *) &localaddr,
1043                                             flag_not), sizeof(local_addr));
1044         if ((strlen(local_addr) + strlen(buffer)) > 22)
1045             local_addr[22 - strlen(buffer)] = '\0';
1046         strcat(local_addr, ":");
1047         strcat(local_addr, buffer);
1048
1049         snprintf(buffer, sizeof(buffer), "%s",
1050                  get_sname(htons(rem_port), "raw", flag_not & FLAG_NUM_PORT));
1051         safe_strncpy(rem_addr, ap->sprint((struct sockaddr *) &remaddr,
1052                                           flag_not), sizeof(rem_addr));
1053         if ((strlen(rem_addr) + strlen(buffer)) > 22)
1054             rem_addr[22 - strlen(buffer)] = '\0';
1055         strcat(rem_addr, ":");
1056         strcat(rem_addr, buffer);
1057
1058         timers[0] = '\0';
1059         if (flag_opt)
1060             switch (timer_run) {
1061             case 0:
1062                 snprintf(timers, sizeof(timers), _("off (0.00/%ld/%d)"), retr, timeout);
1063                 break;
1064
1065             case 1:
1066             case 2:
1067                 snprintf(timers, sizeof(timers), _("on%d (%2.2f/%ld/%d)"), timer_run, (double) time_len / 100,
1068                          retr, timeout);
1069                 break;
1070
1071             default:
1072                 snprintf(timers, sizeof(timers), _("unkn-%d (%2.2f/%ld/%d)"),
1073                          timer_run, (double) time_len / 100,
1074                          retr, timeout);
1075                 break;
1076             }
1077         printf("raw   %6ld %6ld %-23s %-23s %-12d",
1078                rxq, txq, local_addr, rem_addr, state);
1079
1080         finish_this_one(uid,inode,timers);
1081     }
1082 }
1083
1084 static int raw_info(void)
1085 {
1086     INFO_GUTS6(_PATH_PROCNET_RAW, _PATH_PROCNET_RAW6, "AF INET (raw)",
1087                raw_do_one);
1088 }
1089
1090 #endif
1091
1092
1093 #if HAVE_AFUNIX
1094
1095 #define HAS_INODE 1
1096
1097 static void unix_do_one(int nr, const char *line)
1098 {
1099     static int has = 0;
1100     char path[MAXPATHLEN], ss_flags[32];
1101     char *ss_proto, *ss_state, *ss_type;
1102     int num, state, type, inode;
1103     void *d;
1104     unsigned long refcnt, proto, flags;
1105
1106     if (nr == 0) {
1107         if (strstr(line, "Inode"))
1108             has |= HAS_INODE;
1109         return;
1110     }
1111     path[0] = '\0';
1112     num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s",
1113                  &d, &refcnt, &proto, &flags, &type, &state, &inode, path);
1114     if (num < 6) {
1115         fprintf(stderr, _("warning, got bogus unix line.\n"));
1116         return;
1117     }
1118     if (!(has & HAS_INODE))
1119         snprintf(path,sizeof(path),"%d",inode);
1120
1121     if (!flag_all) {
1122         if ((state == SS_UNCONNECTED) && (flags & SO_ACCEPTCON)) {
1123                 if (!flag_lst)
1124                         return;
1125         } else {
1126                 if (flag_lst)
1127                         return;
1128         }
1129     }
1130
1131     switch (proto) {
1132     case 0:
1133         ss_proto = "unix";
1134         break;
1135
1136     default:
1137         ss_proto = "??";
1138     }
1139
1140     switch (type) {
1141     case SOCK_STREAM:
1142         ss_type = _("STREAM");
1143         break;
1144
1145     case SOCK_DGRAM:
1146         ss_type = _("DGRAM");
1147         break;
1148
1149     case SOCK_RAW:
1150         ss_type = _("RAW");
1151         break;
1152
1153     case SOCK_RDM:
1154         ss_type = _("RDM");
1155         break;
1156
1157     case SOCK_SEQPACKET:
1158         ss_type = _("SEQPACKET");
1159         break;
1160
1161     default:
1162         ss_type = _("UNKNOWN");
1163     }
1164
1165     switch (state) {
1166     case SS_FREE:
1167         ss_state = _("FREE");
1168         break;
1169
1170     case SS_UNCONNECTED:
1171         /*
1172          * Unconnected sockets may be listening
1173          * for something.
1174          */
1175         if (flags & SO_ACCEPTCON) {
1176             ss_state = _("LISTENING");
1177         } else {
1178             ss_state = "";
1179         }
1180         break;
1181
1182     case SS_CONNECTING:
1183         ss_state = _("CONNECTING");
1184         break;
1185
1186     case SS_CONNECTED:
1187         ss_state = _("CONNECTED");
1188         break;
1189
1190     case SS_DISCONNECTING:
1191         ss_state = _("DISCONNECTING");
1192         break;
1193
1194     default:
1195         ss_state = _("UNKNOWN");
1196     }
1197
1198     strcpy(ss_flags, "[ ");
1199     if (flags & SO_ACCEPTCON)
1200         strcat(ss_flags, "ACC ");
1201     if (flags & SO_WAITDATA)
1202         strcat(ss_flags, "W ");
1203     if (flags & SO_NOSPACE)
1204         strcat(ss_flags, "N ");
1205
1206     strcat(ss_flags, "]");
1207
1208     printf("%-5s %-6ld %-11s %-10s %-13s ",
1209            ss_proto, refcnt, ss_flags, ss_type, ss_state);
1210     if (has & HAS_INODE)
1211         printf("%-6d ",inode);
1212     else
1213         printf("-      ");
1214     if (flag_prg)
1215         printf("%-" PROGNAME_WIDTHs "s",(has & HAS_INODE?prg_cache_get(inode):"-"));
1216     puts(path);
1217 }
1218
1219 static int unix_info(void)
1220 {
1221
1222     printf(_("Active UNIX domain sockets "));
1223     if (flag_all)
1224         printf(_("(servers and established)"));
1225     else {
1226       if (flag_lst)
1227         printf(_("(only servers)"));
1228       else
1229         printf(_("(w/o servers)"));
1230     }
1231
1232     printf(_("\nProto RefCnt Flags       Type       State         I-Node"));
1233     print_progname_banner();
1234     printf(_(" Path\n"));       /* xxx */
1235
1236     {
1237         INFO_GUTS(_PATH_PROCNET_UNIX, "AF UNIX", unix_do_one);
1238     }
1239 }
1240 #endif
1241
1242
1243 #if HAVE_AFAX25
1244 static int ax25_info(void)
1245 {
1246     FILE *f;
1247     char buffer[256], buf[16];
1248     char *src, *dst, *dev, *p;
1249     int st, vs, vr, sendq, recvq, ret;
1250     int new = -1;               /* flag for new (2.1.x) kernels */
1251     static char *ax25_state[5] =
1252     {
1253         N_("LISTENING"),
1254         N_("SABM SENT"),
1255         N_("DISC SENT"),
1256         N_("ESTABLISHED"),
1257         N_("RECOVERY")
1258     };
1259     if (!(f = fopen(_PATH_PROCNET_AX25, "r"))) {
1260         if (errno != ENOENT) {
1261             perror(_PATH_PROCNET_AX25);
1262             return (-1);
1263         }
1264         if (flag_arg || flag_ver)
1265             ESYSNOT("netstat", "AF AX25");
1266         if (flag_arg)
1267             return (1);
1268         else
1269             return (0);
1270     }
1271     printf(_("Active AX.25 sockets\n"));
1272     printf(_("Dest       Source     Device  State        Vr/Vs    Send-Q  Recv-Q\n"));
1273     while (fgets(buffer, 256, f)) {
1274         if (new == -1) {
1275             if (!strncmp(buffer, "dest_addr", 9)) {
1276                 new = 0;
1277                 continue;       /* old kernels have a header line */
1278             } else
1279                 new = 1;
1280         }
1281         /*
1282          * In a network connection with no user socket the Snd-Q, Rcv-Q
1283          * and Inode fields are empty in 2.0.x and '*' in 2.1.x
1284          */
1285         sendq = 0;
1286         recvq = 0;
1287         if (new == 0) {
1288             dst = buffer;
1289             src = buffer + 10;
1290             dst[9] = 0;
1291             src[9] = 0;
1292             ret = sscanf(buffer + 20, "%s %d %d %d %*d %*d/%*d %*d/%*d %*d/%*d %*d/%*d %*d/%*d %*d %*d %*d %d %d %*d",
1293                    buf, &st, &vs, &vr, &sendq, &recvq);
1294             if (ret != 4 && ret != 6) {
1295                 printf(_("Problem reading data from %s\n"), _PATH_PROCNET_AX25);
1296                 continue;
1297             }
1298             dev = buf;
1299         } else {
1300             p = buffer;
1301             while (*p != ' ') p++;
1302             p++;
1303             dev = p;
1304             while (*p != ' ') p++;
1305             *p++ = 0;
1306             src = p;
1307             while (*p != ' ') p++;
1308             *p++ = 0;
1309             dst = p;
1310             while (*p != ' ') p++;
1311             *p++ = 0;
1312             ret = sscanf(p, "%d %d %d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %d %d %*d",
1313                    &st, &vs, &vr, &sendq, &recvq);
1314             if (ret != 3 && ret != 5) {
1315                     printf(_("problem reading data from %s\n"), _PATH_PROCNET_AX25);
1316                     continue;
1317             }
1318             /*
1319              * FIXME: digipeaters should be handled somehow.
1320              * For now we just strip them.
1321              */
1322             p = dst;
1323             while (*p && *p != ',') p++;
1324             *p = 0;
1325         }
1326         printf("%-9s  %-9s  %-6s  %-11s  %03d/%03d  %-6d  %-6d\n",
1327                dst, src,
1328                dev,
1329                _(ax25_state[st]),
1330                vr, vs, sendq, recvq);
1331     }
1332     fclose(f);
1333     return 0;
1334 }
1335 #endif
1336
1337
1338 #if HAVE_AFIPX
1339 static int ipx_info(void)
1340 {
1341     FILE *f;
1342     char buf[256];
1343     unsigned long txq, rxq;
1344     unsigned int state;
1345     unsigned int uid;
1346     char *st;
1347     int nc;
1348     struct aftype *ap;
1349     struct passwd *pw;
1350     char sad[50], dad[50];
1351     struct sockaddr sa;
1352     unsigned sport = 0, dport = 0;
1353
1354     if (!(f = fopen(_PATH_PROCNET_IPX, "r"))) {
1355         if (errno != ENOENT) {
1356             perror(_PATH_PROCNET_IPX);
1357             return (-1);
1358         }
1359         if (flag_arg || flag_ver)
1360             ESYSNOT("netstat", "AF IPX");
1361         if (flag_arg)
1362             return (1);
1363         else
1364             return (0);
1365     }
1366     printf(_("Active IPX sockets\nProto Recv-Q Send-Q Local Address              Foreign Address            State"));   /* xxx */
1367     if (flag_exp > 1)
1368         printf(_(" User"));     /* xxx */
1369     printf("\n");
1370     if ((ap = get_afntype(AF_IPX)) == NULL) {
1371         EINTERN("netstat.c", "AF_IPX missing");
1372         return (-1);
1373     }
1374     fgets(buf, 255, f);
1375
1376     while (fgets(buf, 255, f) != NULL) {
1377         sscanf(buf, "%s %s %lX %lX %d %d",
1378                sad, dad, &txq, &rxq, &state, &uid);
1379         if ((st = rindex(sad, ':'))) {
1380             *st++ = '\0';
1381             sscanf(st, "%X", &sport);   /* net byt order */
1382             sport = ntohs(sport);
1383         } else {
1384             EINTERN("netstat.c", _PATH_PROCNET_IPX " sport format error");
1385             return (-1);
1386         }
1387         nc = 0;
1388         if (strcmp(dad, "Not_Connected") != 0) {
1389             if ((st = rindex(dad, ':'))) {
1390                 *st++ = '\0';
1391                 sscanf(st, "%X", &dport);       /* net byt order */
1392                 dport = ntohs(dport);
1393             } else {
1394                 EINTERN("netstat.c", _PATH_PROCNET_IPX " dport format error");
1395                 return (-1);
1396             }
1397         } else
1398             nc = 1;
1399
1400         switch (state) {
1401         case TCP_ESTABLISHED:
1402             st = _("ESTAB");
1403             break;
1404
1405         case TCP_CLOSE:
1406             st = "";
1407             break;
1408
1409         default:
1410             st = _("UNK.");
1411             break;
1412         }
1413
1414         /* Fetch and resolve the Source */
1415         (void) ap->input(4, sad, &sa);
1416         safe_strncpy(buf, ap->sprint(&sa, flag_not), sizeof(buf));
1417         snprintf(sad, sizeof(sad), "%s:%04X", buf, sport);
1418
1419         if (!nc) {
1420             /* Fetch and resolve the Destination */
1421             (void) ap->input(4, dad, &sa);
1422             safe_strncpy(buf, ap->sprint(&sa, flag_not), sizeof(buf));
1423             snprintf(dad, sizeof(dad), "%s:%04X", buf, dport);
1424         } else
1425             strcpy(dad, "-");
1426
1427         printf("IPX   %6ld %6ld %-26s %-26s %-5s", txq, rxq, sad, dad, st);
1428         if (flag_exp > 1) {
1429             if (!(flag_not & FLAG_NUM_USER) && ((pw = getpwuid(uid)) != NULL))
1430                 printf(" %-10s", pw->pw_name);
1431             else
1432                 printf(" %-10d", uid);
1433         }
1434         printf("\n");
1435     }
1436     fclose(f);
1437     return 0;
1438 }
1439 #endif
1440
1441 static int iface_info(void)
1442 {
1443     if (skfd < 0) {
1444         if ((skfd = sockets_open(0)) < 0) {
1445             perror("socket");
1446             exit(1);
1447         }
1448         printf(_("Kernel Interface table\n"));
1449     }
1450     if (flag_exp < 2) {
1451         ife_short = 1;
1452         printf(_("Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR   TX-OK TX-ERR TX-DRP TX-OVR Flg\n"));
1453     }
1454
1455     if (for_all_interfaces(do_if_print, &flag_all) < 0) {
1456         perror(_("missing interface information"));
1457         exit(1);
1458     }
1459     if (flag_cnt)
1460         free_interface_list();
1461     else {
1462         close(skfd);
1463         skfd = -1;
1464     }
1465
1466     return 0;
1467 }
1468
1469
1470 static void version(void)
1471 {
1472     printf("%s\n%s\n%s\n%s\n", Release, Version, Signature, Features);
1473     exit(E_VERSION);
1474 }
1475
1476
1477 static void usage(void)
1478 {
1479     fprintf(stderr, _("usage: netstat [-veenNcCF] [<Af>] -r         netstat {-V|--version|-h|--help}\n"));
1480     fprintf(stderr, _("       netstat [-vnNcaeol] [<Socket> ...]\n"));
1481     fprintf(stderr, _("       netstat { [-veenNac] -i | [-cnNe] -M | -s }\n\n"));
1482
1483     fprintf(stderr, _("        -r, --route              display routing table\n"));
1484     fprintf(stderr, _("        -i, --interfaces         display interface table\n"));
1485     fprintf(stderr, _("        -g, --groups             display multicast group memberships\n"));
1486     fprintf(stderr, _("        -s, --statistics         display networking statistics (like SNMP)\n"));
1487 #if HAVE_FW_MASQUERADE
1488     fprintf(stderr, _("        -M, --masquerade         display masqueraded connections\n\n"));
1489 #endif
1490     fprintf(stderr, _("        -v, --verbose            be verbose\n"));
1491     fprintf(stderr, _("        -n, --numeric            don't resolve names\n"));
1492     fprintf(stderr, _("        --numeric-hosts          don't resolve host names\n"));
1493     fprintf(stderr, _("        --numeric-ports          don't resolve port names\n"));
1494     fprintf(stderr, _("        --numeric-users          don't resolve user names\n"));
1495     fprintf(stderr, _("        -N, --symbolic           resolve hardware names\n"));
1496     fprintf(stderr, _("        -e, --extend             display other/more information\n"));
1497     fprintf(stderr, _("        -p, --programs           display PID/Program name for sockets\n"));
1498     fprintf(stderr, _("        -c, --continuous         continuous listing\n\n"));
1499     fprintf(stderr, _("        -l, --listening          display listening server sockets\n"));
1500     fprintf(stderr, _("        -a, --all, --listening   display all sockets (default: connected)\n"));
1501     fprintf(stderr, _("        -o, --timers             display timers\n"));
1502     fprintf(stderr, _("        -F, --fib                display Forwarding Information Base (default)\n"));
1503     fprintf(stderr, _("        -C, --cache              display routing cache instead of FIB\n\n"));
1504
1505     fprintf(stderr, _("  <Socket>={-t|--tcp} {-u|--udp} {-w|--raw} {-x|--unix} --ax25 --ipx --netrom\n"));
1506     fprintf(stderr, _("  <AF>=Use '-A <af>' or '--<af>'; default: %s\n"), DFLT_AF);
1507     fprintf(stderr, _("  List of possible address families (which support routing):\n"));
1508     print_aflist(1); /* 1 = routeable */
1509     exit(E_USAGE);
1510 }
1511
1512
1513 int main
1514  (int argc, char *argv[]) {
1515     int i;
1516     int lop;
1517     static struct option longopts[] =
1518     {
1519         AFTRANS_OPTS,
1520         {"version", 0, 0, 'V'},
1521         {"interfaces", 0, 0, 'i'},
1522         {"help", 0, 0, 'h'},
1523         {"route", 0, 0, 'r'},
1524 #if HAVE_FW_MASQUERADE
1525         {"masquerade", 0, 0, 'M'},
1526 #endif
1527         {"protocol", 1, 0, 'A'},
1528         {"tcp", 0, 0, 't'},
1529         {"udp", 0, 0, 'u'},
1530         {"raw", 0, 0, 'w'},
1531         {"unix", 0, 0, 'x'},
1532         {"listening", 0, 0, 'l'},
1533         {"all", 0, 0, 'a'},
1534         {"timers", 0, 0, 'o'},
1535         {"continuous", 0, 0, 'c'},
1536         {"extend", 0, 0, 'e'},
1537         {"programs", 0, 0, 'p'},
1538         {"verbose", 0, 0, 'v'},
1539         {"statistics", 0, 0, 's'},
1540         {"numeric", 0, 0, 'n'},
1541         {"numeric-hosts", 0, 0, '!'},
1542         {"numeric-ports", 0, 0, '@'},
1543         {"numeric-users", 0, 0, '#'},
1544         {"symbolic", 0, 0, 'N'},
1545         {"cache", 0, 0, 'C'},
1546         {"fib", 0, 0, 'F'},
1547         {"groups", 0, 0, 'g'},
1548         {NULL, 0, 0, 0}
1549     };
1550
1551 #if I18N
1552     setlocale (LC_ALL, "");
1553     bindtextdomain("net-tools", "/usr/share/locale");
1554     textdomain("net-tools");
1555 #endif
1556     getroute_init();            /* Set up AF routing support */
1557
1558     afname[0] = '\0';
1559     while ((i = getopt_long(argc, argv, "MCFA:acdegphinNorstuVv?wxl", longopts, &lop)) != EOF)
1560         switch (i) {
1561         case -1:
1562             break;
1563         case 1:
1564             if (lop < 0 || lop >= AFTRANS_CNT) {
1565                 EINTERN("netstat.c", "longopts 1 range");
1566                 break;
1567             }
1568             if (aftrans_opt(longopts[lop].name))
1569                 exit(1);
1570             break;
1571         case 'A':
1572             if (aftrans_opt(optarg))
1573                 exit(1);
1574             break;
1575         case 'M':
1576             flag_mas++;
1577             break;
1578         case 'a':
1579             flag_all++;
1580             break;
1581         case 'l':
1582             flag_lst++;
1583             break;
1584         case 'c':
1585             flag_cnt++;
1586             break;
1587
1588         case 'd':
1589             flag_deb++;
1590             break;
1591         case 'g':
1592             flag_igmp++;
1593             break;
1594         case 'e':
1595             flag_exp++;
1596             break;
1597         case 'p':
1598             flag_prg++;
1599             break;
1600         case 'i':
1601             flag_int++;
1602             break;
1603         case 'n':
1604             flag_not |= FLAG_NUM;
1605             break;
1606         case '!':
1607             flag_not |= FLAG_NUM_HOST;
1608             break;
1609         case '@':
1610             flag_not |= FLAG_NUM_PORT;
1611             break;
1612         case '#':
1613             flag_not |= FLAG_NUM_USER;
1614             break;
1615         case 'N':
1616             flag_not |= FLAG_SYM;
1617             break;
1618         case 'C':
1619             flag_cf |= FLAG_CACHE;
1620             break;
1621         case 'F':
1622             flag_cf |= FLAG_FIB;
1623             break;
1624         case 'o':
1625             flag_opt++;
1626             break;
1627         case 'V':
1628             version();
1629             /*NOTREACHED */
1630         case 'v':
1631             flag_ver |= FLAG_VERBOSE;
1632             break;
1633         case 'r':
1634             flag_rou++;
1635             break;
1636
1637         case 't':
1638             flag_tcp++;
1639             break;
1640
1641         case 'u':
1642             flag_udp++;
1643             break;
1644         case 'w':
1645             flag_raw++;
1646             break;
1647         case 'x':
1648             if (aftrans_opt("unix"))
1649                 exit(1);
1650             break;
1651         case '?':
1652         case 'h':
1653             usage();
1654         case 's':
1655             flag_sta++;
1656         }
1657
1658     if (flag_int + flag_rou + flag_mas + flag_sta > 1)
1659         usage();
1660
1661     if ((flag_inet || flag_inet6 || flag_sta) && !(flag_tcp || flag_udp || flag_raw))
1662         flag_tcp = flag_udp = flag_raw = 1;
1663
1664     if ((flag_tcp || flag_udp || flag_raw || flag_igmp) && !(flag_inet || flag_inet6))
1665         flag_inet = flag_inet6 = 1;
1666
1667     flag_arg = flag_tcp + flag_udp + flag_raw + flag_unx + flag_ipx
1668         + flag_ax25 + flag_netrom + flag_igmp + flag_x25;
1669
1670     if (flag_mas) {
1671 #if HAVE_FW_MASQUERADE && HAVE_AFINET
1672 #if MORE_THAN_ONE_MASQ_AF
1673         if (!afname[0])
1674             strcpy(afname, DFLT_AF);
1675 #endif
1676         for (;;) {
1677             i = ip_masq_info(flag_not & FLAG_NUM_HOST,
1678                              flag_not & FLAG_NUM_PORT, flag_exp);
1679             if (i || !flag_cnt)
1680                 break;
1681             sleep(1);
1682         }
1683 #else
1684         ENOSUPP("netstat.c", "FW_MASQUERADE");
1685         i = -1;
1686 #endif
1687         return (i);
1688     }
1689
1690     if (flag_sta) {
1691         inittab();
1692         parsesnmp(flag_raw, flag_tcp, flag_udp);
1693         exit(0);
1694     }
1695
1696     if (flag_rou) {
1697         int options = 0;
1698
1699         if (!afname[0])
1700             strcpy(afname, DFLT_AF);
1701
1702         if (flag_exp == 2)
1703             flag_exp = 1;
1704         else if (flag_exp == 1)
1705             flag_exp = 2;
1706
1707         options = (flag_exp & FLAG_EXT) | flag_not | flag_cf | flag_ver;
1708         if (!flag_cf)
1709             options |= FLAG_FIB;
1710
1711         for (;;) {
1712             i = route_info(afname, options);
1713             if (i || !flag_cnt)
1714                 break;
1715             sleep(1);
1716         }
1717         return (i);
1718     }
1719     if (flag_int) {
1720         for (;;) {
1721             i = iface_info();
1722             if (!flag_cnt || i)
1723                 break;
1724             sleep(1);
1725         }
1726         return (i);
1727     }
1728     for (;;) {
1729         if (!flag_arg || flag_tcp || flag_udp || flag_raw) {
1730 #if HAVE_AFINET
1731             prg_cache_load();
1732             printf(_("Active Internet connections "));  /* xxx */
1733
1734             if (flag_all)
1735                 printf(_("(servers and established)"));
1736             else {
1737               if (flag_lst)
1738                 printf(_("(only servers)"));
1739               else
1740                 printf(_("(w/o servers)"));
1741             }
1742             printf(_("\nProto Recv-Q Send-Q Local Address           Foreign Address         State      "));     /* xxx */
1743             if (flag_exp > 1)
1744                 printf(_(" User       Inode     "));
1745             print_progname_banner();
1746             if (flag_opt)
1747                 printf(_(" Timer"));    /* xxx */
1748             printf("\n");
1749 #else
1750             if (flag_arg) {
1751                 i = 1;
1752                 ENOSUPP("netstat", "AF INET");
1753             }
1754 #endif
1755         }
1756 #if HAVE_AFINET
1757         if (!flag_arg || flag_tcp) {
1758             i = tcp_info();
1759             if (i)
1760                 return (i);
1761         }
1762         if (!flag_arg || flag_udp) {
1763             i = udp_info();
1764             if (i)
1765                 return (i);
1766         }
1767         if (!flag_arg || flag_raw) {
1768             i = raw_info();
1769             if (i)
1770                 return (i);
1771         }
1772
1773         if (flag_igmp) {
1774 #if HAVE_AFINET6
1775             printf( "IPv6/");
1776 #endif
1777             printf( _("IPv4 Group Memberships\n") );
1778             printf( _("Interface       RefCnt Group\n") );
1779             printf( "--------------- ------ ---------------------\n" );
1780             i = igmp_info();
1781             if (i)
1782                 return (i);
1783         }
1784 #endif
1785
1786         if (!flag_arg || flag_unx) {
1787 #if HAVE_AFUNIX
1788             prg_cache_load();
1789             i = unix_info();
1790             if (i)
1791                 return (i);
1792 #else
1793             if (flag_arg) {
1794                 i = 1;
1795                 ENOSUPP("netstat", "AF UNIX");
1796             }
1797 #endif
1798         }
1799         if (!flag_arg || flag_ipx) {
1800 #if HAVE_AFIPX
1801             i = ipx_info();
1802             if (i)
1803                 return (i);
1804 #else
1805             if (flag_arg) {
1806                 i = 1;
1807                 ENOSUPP("netstat", "AF IPX");
1808             }
1809 #endif
1810         }
1811         if (!flag_arg || flag_ax25) {
1812 #if HAVE_AFAX25
1813             i = ax25_info();
1814             if (i)
1815                 return (i);
1816 #else
1817             if (flag_arg) {
1818                 i = 1;
1819                 ENOSUPP("netstat", "AF AX25");
1820             }
1821 #endif
1822         }
1823         if(!flag_arg || flag_x25) {
1824 #if HAVE_AFX25
1825             /* FIXME */
1826             i = x25_info();
1827             if (i)
1828                 return(i);
1829 #else
1830             if (flag_arg) {
1831                 i = 1;
1832                 ENOSUPP("netstat", "AF X25");
1833             }
1834 #endif
1835         }
1836         if (!flag_arg || flag_netrom) {
1837 #if HAVE_AFNETROM
1838             i = netrom_info();
1839             if (i)
1840                 return (i);
1841 #else
1842             if (flag_arg) {
1843                 i = 1;
1844                 ENOSUPP("netstat", "AF NETROM");
1845             }
1846 #endif
1847         }
1848         if (!flag_cnt || i)
1849             break;
1850         sleep(1);
1851         prg_cache_clear();
1852     }
1853     return (i);
1854 }