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 1.47 2002/02/19 01:12:49 ecki 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     unsigned long 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(unsigned long 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(unsigned long 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 int extract_type_1_socket_inode(const char lname[], unsigned 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) return(-1);
 305
 306     if (memcmp(lname, PRG_SOCKET_PFX, PRG_SOCKET_PFXl)) return(-1);
 307     if (lname[strlen(lname)-1] != ']') return(-1);
 308
 309     {
 310         char inode_str[strlen(lname + 1)];  /* e.g. "12345" */
 311         const int inode_str_len = strlen(lname) - PRG_SOCKET_PFXl - 1;
 312         char *serr;
 313
 314         strncpy(inode_str, lname+PRG_SOCKET_PFXl, inode_str_len);
 315         inode_str[inode_str_len] = '\0';
 316         *inode_p = strtol(inode_str,&serr,0);
 317         if (!serr || *serr || *inode_p < 0 || *inode_p >= INT_MAX)
 318             return(-1);
 319     }
 320     return(0);
 321 }
 322
 323
 324
 325 static int extract_type_2_socket_inode(const char lname[], unsigned long * inode_p) {
 326
 327     /* If lname is of the form "[0000]:12345", extract the "12345"
 328        as *inode_p.  Otherwise, return -1 as *inode_p.
 329        */
 330
 331     if (strlen(lname) < PRG_SOCKET_PFX2l+1) return(-1);
 332     if (memcmp(lname, PRG_SOCKET_PFX2, PRG_SOCKET_PFX2l)) return(-1);
 333
 334     {
 335         char *serr;
 336
 337         *inode_p=strtol(lname + PRG_SOCKET_PFX2l,&serr,0);
 338         if (!serr || *serr || *inode_p < 0 || *inode_p >= INT_MAX)
 339             return(-1);
 340     }
 341     return(0);
 342 }
 343
 344
 345
 346
 347 static void prg_cache_load(void)
 348 {
 349     char line[LINE_MAX],eacces=0;
 350     int procfdlen,fd,cmdllen,lnamelen;
 351     char lname[30],cmdlbuf[512],finbuf[PROGNAME_WIDTH];
 352     unsigned long inode;
 353     const char *cs,*cmdlp;
 354     DIR *dirproc=NULL,*dirfd=NULL;
 355     struct dirent *direproc,*direfd;
 356
 357     if (prg_cache_loaded || !flag_prg) return;
 358     prg_cache_loaded=1;
 359     cmdlbuf[sizeof(cmdlbuf)-1]='\0';
 360     if (!(dirproc=opendir(PATH_PROC))) goto fail;
 361     while (errno=0,direproc=readdir(dirproc)) {
 362 #ifdef DIRENT_HAVE_D_TYPE_WORKS
 363         if (direproc->d_type!=DT_DIR) continue;
 364 #endif
 365         for (cs=direproc->d_name;*cs;cs++)
 366             if (!isdigit(*cs))
 367                 break;
 368         if (*cs)
 369             continue;
 370         procfdlen=snprintf(line,sizeof(line),PATH_PROC_X_FD,direproc->d_name);
 371         if (procfdlen<=0 || procfdlen>=sizeof(line)-5)
 372             continue;
 373         errno=0;
 374         dirfd=opendir(line);
 375         if (! dirfd) {
 376             if (errno==EACCES)
 377                 eacces=1;
 378             continue;
 379         }
 380         line[procfdlen] = '/';
 381         cmdlp = NULL;
 382         while ((direfd = readdir(dirfd))) {
 383 #ifdef DIRENT_HAVE_D_TYPE_WORKS
 384             if (direfd->d_type!=DT_LNK)
 385                 continue;
 386 #endif
 387             if (procfdlen+1+strlen(direfd->d_name)+1>sizeof(line))
 388                 continue;
 389             memcpy(line + procfdlen - PATH_FD_SUFFl, PATH_FD_SUFF "/",
 390                    PATH_FD_SUFFl+1);
 391             strcpy(line + procfdlen + 1, direfd->d_name);
 392             lnamelen=readlink(line,lname,sizeof(lname)-1);
 393             lname[lnamelen] = '\0';  /*make it a null-terminated string*/
 394
 395             if (extract_type_1_socket_inode(lname, &inode) < 0)
 396               if (extract_type_2_socket_inode(lname, &inode) < 0)
 397                 continue;
 398
 399             if (!cmdlp) {
 400                 if (procfdlen - PATH_FD_SUFFl + PATH_CMDLINEl >=
 401                     sizeof(line) - 5)
 402                     continue;
 403                 strcpy(line + procfdlen-PATH_FD_SUFFl, PATH_CMDLINE);
 404                 fd = open(line, O_RDONLY);
 405                 if (fd < 0)
 406                     continue;
 407                 cmdllen = read(fd, cmdlbuf, sizeof(cmdlbuf) - 1);
 408                 if (close(fd))
 409                     continue;
 410                 if (cmdllen == -1)
 411                     continue;
 412                 if (cmdllen < sizeof(cmdlbuf) - 1)
 413                     cmdlbuf[cmdllen]='\0';
 414                 if ((cmdlp = strrchr(cmdlbuf, '/')))
 415                     cmdlp++;
 416                 else
 417                     cmdlp = cmdlbuf;
 418             }
 419
 420             snprintf(finbuf, sizeof(finbuf), "%s/%s", direproc->d_name, cmdlp);
 421             prg_cache_add(inode, finbuf);
 422         }
 423         closedir(dirfd);
 424         dirfd = NULL;
 425     }
 426     if (dirproc)
 427         closedir(dirproc);
 428     if (dirfd)
 429         closedir(dirfd);
 430     if (!eacces)
 431         return;
 432     if (prg_cache_loaded == 1) {
 433     fail:
 434         fprintf(stderr,_("(No info could be read for \"-p\": geteuid()=%d but you should be root.)\n"),
 435                 geteuid());
 436     }
 437     else
 438         fprintf(stderr, _("(Not all processes could be identified, non-owned process info\n"
 439                          " will not be shown, you would have to be root to see it all.)\n"));
 440 }
 441
 442 #if HAVE_AFNETROM
 443 static const char *netrom_state[] =
 444 {
 445     N_("LISTENING"),
 446     N_("CONN SENT"),
 447     N_("DISC SENT"),
 448     N_("ESTABLISHED")
 449 };
 450
 451 static int netrom_info(void)
 452 {
 453     FILE *f;
 454     char buffer[256], dev[16];
 455     int st, vs, vr, sendq, recvq, ret;
 456
 457     f = fopen(_PATH_PROCNET_NR, "r");
 458     if (f == NULL) {
 459         if (errno != ENOENT) {
 460             perror(_PATH_PROCNET_NR);
 461             return (-1);
 462         }
 463         if (flag_arg || flag_ver)
 464             ESYSNOT("netstat", "AF NETROM");
 465         if (flag_arg)
 466             return (1);
 467         else
 468             return (0);
 469     }
 470     printf(_("Active NET/ROM sockets\n"));
 471     printf(_("User       Dest       Source     Device  State        Vr/Vs    Send-Q  Recv-Q\n"));
 472     fgets(buffer, 256, f);
 473
 474     while (fgets(buffer, 256, f)) {
 475         buffer[9] = 0;
 476         buffer[19] = 0;
 477         buffer[29] = 0;
 478         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",
 479                dev, &st, &vs, &vr, &sendq, &recvq);
 480         if (ret != 6) {
 481             printf(_("Problem reading data from %s\n"), _PATH_PROCNET_NR);
 482             continue;
 483         }
 484         printf("%-9s  %-9s  %-9s  %-6s  %-11s  %03d/%03d  %-6d  %-6d\n",
 485                buffer, buffer + 10, buffer + 20,
 486                dev,
 487                _(netrom_state[st]),
 488                vr, vs, sendq, recvq);
 489     }
 490     fclose(f);
 491     return 0;
 492 }
 493 #endif
 494
 495 /* These enums are used by IPX too. :-( */
 496 enum {
 497     TCP_ESTABLISHED = 1,
 498     TCP_SYN_SENT,
 499     TCP_SYN_RECV,
 500     TCP_FIN_WAIT1,
 501     TCP_FIN_WAIT2,
 502     TCP_TIME_WAIT,
 503     TCP_CLOSE,
 504     TCP_CLOSE_WAIT,
 505     TCP_LAST_ACK,
 506     TCP_LISTEN,
 507     TCP_CLOSING                 /* now a valid state */
 508 };
 509
 510 #if HAVE_AFINET || HAVE_AFINET6
 511
 512 static const char *tcp_state[] =
 513 {
 514     "",
 515     N_("ESTABLISHED"),
 516     N_("SYN_SENT"),
 517     N_("SYN_RECV"),
 518     N_("FIN_WAIT1"),
 519     N_("FIN_WAIT2"),
 520     N_("TIME_WAIT"),
 521     N_("CLOSE"),
 522     N_("CLOSE_WAIT"),
 523     N_("LAST_ACK"),
 524     N_("LISTEN"),
 525     N_("CLOSING")
 526 };
 527
 528 static void finish_this_one(int uid, unsigned long inode, const char *timers)
 529 {
 530     struct passwd *pw;
 531
 532     if (flag_exp > 1) {
 533         if (!(flag_not & FLAG_NUM_USER) && ((pw = getpwuid(uid)) != NULL))
 534             printf("%-10s ", pw->pw_name);
 535         else
 536             printf("%-10d ", uid);
 537         printf("%-10lu ",inode);
 538     }
 539     if (flag_prg)
 540         printf("%-" PROGNAME_WIDTHs "s",prg_cache_get(inode));
 541     if (flag_opt)
 542         printf("%s", timers);
 543     putchar('\n');
 544 }
 545
 546 static void igmp_do_one(int lnr, const char *line)
 547 {
 548     char mcast_addr[128];
 549 #if HAVE_AFINET6
 550     struct sockaddr_in6 mcastaddr;
 551     char addr6[INET6_ADDRSTRLEN];
 552     struct in6_addr in6;
 553     extern struct aftype inet6_aftype;
 554 #else
 555     struct sockaddr_in mcastaddr;
 556 #endif
 557     struct aftype *ap;
 558     static int idx_flag = 0;
 559     static int igmp6_flag = 0;
 560     static char device[16];
 561     int num, idx, refcnt;
 562
 563     if (lnr == 0) {
 564         /* IPV6 ONLY */
 565         /* igmp6 file does not have any comments on first line */
 566         if ( strstr( line, "Device" ) == NULL ) {
 567             igmp6_flag = 1;
 568         } else {
 569             /* IPV4 ONLY */
 570             /* 2.1.x kernels and up have Idx field */
 571             /* 2.0.x and below do not have Idx field */
 572             if ( strncmp( line, "Idx", strlen("Idx") ) == 0 )
 573                 idx_flag = 1;
 574             else
 575                 idx_flag = 0;
 576             return;
 577         }
 578     }
 579
 580     if (igmp6_flag) {    /* IPV6 */
 581 #if HAVE_AFINET6
 582         num = sscanf( line, "%d %15s %64[0-9A-Fa-f] %d", &idx, device, mcast_addr, &refcnt );
 583         if (num == 4) {
 584             /* Demangle what the kernel gives us */
 585             sscanf(mcast_addr, "%08X%08X%08X%08X",
 586                    &in6.s6_addr32[0], &in6.s6_addr32[1],
 587            &in6.s6_addr32[2], &in6.s6_addr32[3]);
 588             in6.s6_addr32[0] = htonl(in6.s6_addr32[0]);
 589             in6.s6_addr32[1] = htonl(in6.s6_addr32[1]);
 590             in6.s6_addr32[2] = htonl(in6.s6_addr32[2]);
 591             in6.s6_addr32[3] = htonl(in6.s6_addr32[3]);
 592         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 593             inet6_aftype.input(1, addr6, (struct sockaddr *) &mcastaddr);
 594             mcastaddr.sin6_family = AF_INET6;
 595         } else {
 596             fprintf(stderr, _("warning, got bogus igmp6 line %d.\n"), lnr);
 597             return;
 598         }
 599
 600         if ((ap = get_afntype(((struct sockaddr *) &mcastaddr)->sa_family)) == NULL) {
 601             fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 602                     ((struct sockaddr *) &mcastaddr)->sa_family);
 603             return;
 604         }
 605         safe_strncpy(mcast_addr, ap->sprint((struct sockaddr *) &mcastaddr,
 606                                       flag_not), sizeof(mcast_addr));
 607         printf("%-15s %-6d %s\n", device, refcnt, mcast_addr);
 608 #endif
 609     } else {    /* IPV4 */
 610 #if HAVE_AFINET
 611         if (line[0] != '\t') {
 612             if (idx_flag) {
 613                 if ((num = sscanf( line, "%d\t%10c", &idx, device)) < 2) {
 614                     fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 615                     return;
 616                 }
 617             } else {
 618                 if ( (num = sscanf( line, "%10c", device )) < 1 ) {
 619                     fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 620                     return;
 621                 }
 622             }
 623             device[10] = '\0';
 624             return;
 625         } else if ( line[0] == '\t' ) {
 626             if ( (num = sscanf(line, "\t%8[0-9A-Fa-f] %d", mcast_addr, &refcnt)) < 2 ) {
 627                 fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 628                 return;
 629             }
 630             sscanf( mcast_addr, "%X",
 631                     &((struct sockaddr_in *) &mcastaddr)->sin_addr.s_addr );
 632             ((struct sockaddr *) &mcastaddr)->sa_family = AF_INET;
 633         } else {
 634             fprintf(stderr, _("warning, got bogus igmp line %d.\n"), lnr);
 635             return;
 636         }
 637
 638         if ((ap = get_afntype(((struct sockaddr *) &mcastaddr)->sa_family)) == NULL) {
 639             fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 640                     ((struct sockaddr *) &mcastaddr)->sa_family);
 641             return;
 642         }
 643         safe_strncpy(mcast_addr, ap->sprint((struct sockaddr *) &mcastaddr,
 644                                       flag_not), sizeof(mcast_addr));
 645         printf("%-15s %-6d %s\n", device, refcnt, mcast_addr );
 646 #endif
 647     }    /* IPV4 */
 648 }
 649
 650 #if HAVE_AFX25
 651 static int x25_info(void)
 652 {
 653        FILE *f=fopen(_PATH_PROCNET_X25, "r");
 654        char buffer[256],dev[16];
 655        int st,vs,vr,sendq,recvq,lci;
 656        static char *x25_state[5]=
 657        {
 658                "LISTENING",
 659                "SABM_SENT",
 660                "DISC_SENT",
 661                "ESTABLISHED",
 662                "RECOVERY"
 663        };
 664        if(!(f=fopen(_PATH_PROCNET_X25, "r")))
 665        {
 666                if (errno != ENOENT) {
 667                        perror(_PATH_PROCNET_X25);
 668                        return(-1);
 669                }
 670                if (flag_arg || flag_ver)
 671                        ESYSNOT("netstat","AF X25");
 672                if (flag_arg)
 673                        return(1);
 674                else
 675                        return(0);
 676        }
 677        printf( _("Active X.25 sockets\n"));
 678        /* IMHO, Vr/Vs is not very usefull --SF */
 679        printf( _("Dest         Source          Device  LCI  State        Vr/Vs  Send-Q  Recv-Q\n"));
 680        fgets(buffer,256,f);
 681        while(fgets(buffer,256,f))
 682        {
 683                buffer[10]=0;
 684                buffer[20]=0;
 685                sscanf(buffer+22,"%s %d %d %d %d %*d %*d %*d %*d %*d %*d %d %d %*d",
 686                        dev,&lci,&st,&vs,&vr,&sendq,&recvq);
 687                if (!(flag_all || lci))
 688                        continue;
 689                printf("%-15s %-15s %-7s %-3d  %-11s  %02d/%02d  %-6d  %-6d\n",
 690                        buffer,buffer+11,
 691                        dev,
 692                        lci,
 693                        x25_state[st],
 694                        vr,vs,sendq,recvq);
 695        }
 696        fclose(f);
 697        return 0;
 698 }
 699 #endif
 700
 701 static int igmp_info(void)
 702 {
 703     INFO_GUTS6(_PATH_PROCNET_IGMP, _PATH_PROCNET_IGMP6, "AF INET (igmp)",
 704                igmp_do_one);
 705 }
 706
 707 static void tcp_do_one(int lnr, const char *line)
 708 {
 709     unsigned long rxq, txq, time_len, retr, inode;
 710     int num, local_port, rem_port, d, state, uid, timer_run, timeout;
 711     char rem_addr[128], local_addr[128], timers[64], buffer[1024], more[512];
 712     struct aftype *ap;
 713 #if HAVE_AFINET6
 714     struct sockaddr_in6 localaddr, remaddr;
 715     char addr6[INET6_ADDRSTRLEN];
 716     struct in6_addr in6;
 717     extern struct aftype inet6_aftype;
 718 #else
 719     struct sockaddr_in localaddr, remaddr;
 720 #endif
 721
 722     if (lnr == 0)
 723         return;
 724
 725     num = sscanf(line,
 726     "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %lu %512s\n",
 727                  &d, local_addr, &local_port, rem_addr, &rem_port, &state,
 728                  &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
 729
 730     if (strlen(local_addr) > 8) {
 731 #if HAVE_AFINET6
 732         /* Demangle what the kernel gives us */
 733         sscanf(local_addr, "%08X%08X%08X%08X",
 734                &in6.s6_addr32[0], &in6.s6_addr32[1],
 735            &in6.s6_addr32[2], &in6.s6_addr32[3]);
 736         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 737         inet6_aftype.input(1, addr6, (struct sockaddr *) &localaddr);
 738         sscanf(rem_addr, "%08X%08X%08X%08X",
 739                &in6.s6_addr32[0], &in6.s6_addr32[1],
 740                &in6.s6_addr32[2], &in6.s6_addr32[3]);
 741         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 742         inet6_aftype.input(1, addr6, (struct sockaddr *) &remaddr);
 743         localaddr.sin6_family = AF_INET6;
 744         remaddr.sin6_family = AF_INET6;
 745 #endif
 746     } else {
 747         sscanf(local_addr, "%X",
 748                &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
 749         sscanf(rem_addr, "%X",
 750                &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
 751         ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
 752         ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
 753     }
 754
 755     if (num < 11) {
 756         fprintf(stderr, _("warning, got bogus tcp line.\n"));
 757         return;
 758     }
 759     if ((ap = get_afntype(((struct sockaddr *) &localaddr)->sa_family)) == NULL) {
 760         fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 761                 ((struct sockaddr *) &localaddr)->sa_family);
 762         return;
 763     }
 764     if (state == TCP_LISTEN) {
 765         time_len = 0;
 766         retr = 0L;
 767         rxq = 0L;
 768         txq = 0L;
 769     }
 770     safe_strncpy(local_addr, ap->sprint((struct sockaddr *) &localaddr,
 771                                         flag_not), sizeof(local_addr));
 772     safe_strncpy(rem_addr, ap->sprint((struct sockaddr *) &remaddr, flag_not),
 773                  sizeof(rem_addr));
 774     if (flag_all || (flag_lst && !rem_port) || (!flag_lst && rem_port)) {
 775         snprintf(buffer, sizeof(buffer), "%s",
 776                  get_sname(htons(local_port), "tcp",
 777                            flag_not & FLAG_NUM_PORT));
 778
 779         if ((strlen(local_addr) + strlen(buffer)) > 22)
 780             local_addr[22 - strlen(buffer)] = '\0';
 781
 782         strcat(local_addr, ":");
 783         strcat(local_addr, buffer);
 784         snprintf(buffer, sizeof(buffer), "%s",
 785                  get_sname(htons(rem_port), "tcp", flag_not & FLAG_NUM_PORT));
 786
 787         if ((strlen(rem_addr) + strlen(buffer)) > 22)
 788             rem_addr[22 - strlen(buffer)] = '\0';
 789
 790         strcat(rem_addr, ":");
 791         strcat(rem_addr, buffer);
 792         timers[0] = '\0';
 793
 794         if (flag_opt)
 795             switch (timer_run) {
 796             case 0:
 797                 snprintf(timers, sizeof(timers), _("off (0.00/%ld/%d)"), retr, timeout);
 798                 break;
 799
 800             case 1:
 801                 snprintf(timers, sizeof(timers), _("on (%2.2f/%ld/%d)"),
 802                          (double) time_len / HZ, retr, timeout);
 803                 break;
 804
 805             case 2:
 806                 snprintf(timers, sizeof(timers), _("keepalive (%2.2f/%ld/%d)"),
 807                          (double) time_len / HZ, retr, timeout);
 808                 break;
 809
 810             case 3:
 811                 snprintf(timers, sizeof(timers), _("timewait (%2.2f/%ld/%d)"),
 812                          (double) time_len / HZ, retr, timeout);
 813                 break;
 814
 815             default:
 816                 snprintf(timers, sizeof(timers), _("unkn-%d (%2.2f/%ld/%d)"),
 817                          timer_run, (double) time_len / HZ, retr, timeout);
 818                 break;
 819             }
 820         printf("tcp   %6ld %6ld %-*s %-*s %-12s",
 821                rxq, txq, max(23,strlen(local_addr)+1), local_addr, max(23,strlen(rem_addr)), rem_addr, _(tcp_state[state]));
 822
 823         finish_this_one(uid,inode,timers);
 824     }
 825 }
 826
 827 static int tcp_info(void)
 828 {
 829     INFO_GUTS6(_PATH_PROCNET_TCP, _PATH_PROCNET_TCP6, "AF INET (tcp)",
 830                tcp_do_one);
 831 }
 832
 833 static void udp_do_one(int lnr, const char *line)
 834 {
 835     char buffer[8192], local_addr[64], rem_addr[64];
 836     char *udp_state, timers[64], more[512];
 837     int num, local_port, rem_port, d, state, timer_run, uid, timeout;
 838 #if HAVE_AFINET6
 839     struct sockaddr_in6 localaddr, remaddr;
 840     char addr6[INET6_ADDRSTRLEN];
 841     struct in6_addr in6;
 842     extern struct aftype inet6_aftype;
 843 #else
 844     struct sockaddr_in localaddr, remaddr;
 845 #endif
 846     struct aftype *ap;
 847     unsigned long rxq, txq, time_len, retr, inode;
 848
 849     if (lnr == 0)
 850         return;
 851
 852     more[0] = '\0';
 853     num = sscanf(line,
 854                  "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %lu %512s\n",
 855                  &d, local_addr, &local_port,
 856                  rem_addr, &rem_port, &state,
 857           &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
 858
 859     if (strlen(local_addr) > 8) {
 860 #if HAVE_AFINET6
 861         sscanf(local_addr, "%08X%08X%08X%08X",
 862                &in6.s6_addr32[0], &in6.s6_addr32[1],
 863                &in6.s6_addr32[2], &in6.s6_addr32[3]);
 864         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 865         inet6_aftype.input(1, addr6, (struct sockaddr *) &localaddr);
 866         sscanf(rem_addr, "%08X%08X%08X%08X",
 867                &in6.s6_addr32[0], &in6.s6_addr32[1],
 868                &in6.s6_addr32[2], &in6.s6_addr32[3]);
 869         inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
 870         inet6_aftype.input(1, addr6, (struct sockaddr *) &remaddr);
 871         localaddr.sin6_family = AF_INET6;
 872         remaddr.sin6_family = AF_INET6;
 873 #endif
 874     } else {
 875         sscanf(local_addr, "%X",
 876                &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
 877         sscanf(rem_addr, "%X",
 878                &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
 879         ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
 880         ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
 881     }
 882
 883     retr = 0L;
 884     if (!flag_opt)
 885         more[0] = '\0';
 886
 887     if (num < 10) {
 888         fprintf(stderr, _("warning, got bogus udp line.\n"));
 889         return;
 890     }
 891     if ((ap = get_afntype(((struct sockaddr *) &localaddr)->sa_family)) == NULL) {
 892         fprintf(stderr, _("netstat: unsupported address family %d !\n"),
 893                 ((struct sockaddr *) &localaddr)->sa_family);
 894         return;
 895     }
 896     switch (state) {
 897     case TCP_ESTABLISHED:
 898         udp_state = _("ESTABLISHED");
 899         break;
 900
 901     case TCP_CLOSE:
 902         udp_state = "";
 903         break;
 904
 905     default:
 906         udp_state = _("UNKNOWN");
 907         break;
 908     }
 909
 910 #if HAVE_AFINET6
 911 #define notnull(A) (((A.sin6_family == AF_INET6) && \
 912          ((A.sin6_addr.s6_addr32[0]) ||            \
 913           (A.sin6_addr.s6_addr32[1]) ||            \
 914           (A.sin6_addr.s6_addr32[2]) ||            \
 915           (A.sin6_addr.s6_addr32[3]))) ||          \
 916         ((A.sin6_family == AF_INET) &&             \
 917          ((struct sockaddr_in *) &A)->sin_addr.s_addr))
 918 #else
 919 #define notnull(A) (A.sin_addr.s_addr)
 920 #endif
 921
 922     if (flag_all || (notnull(remaddr) && !flag_lst) || (!notnull(remaddr) && flag_lst))
 923     {
 924         safe_strncpy(local_addr, ap->sprint((struct sockaddr *) &localaddr,
 925                                             flag_not), sizeof(local_addr));
 926         snprintf(buffer, sizeof(buffer), "%s",
 927                  get_sname(htons(local_port), "udp",
 928                            flag_not & FLAG_NUM_PORT));
 929         if ((strlen(local_addr) + strlen(buffer)) > 22)
 930             local_addr[22 - strlen(buffer)] = '\0';
 931         strcat(local_addr, ":");
 932         strcat(local_addr, buffer);
 933
 934         snprintf(buffer, sizeof(buffer), "%s",
 935                  get_sname(htons(rem_port), "udp", flag_not & FLAG_NUM_PORT));
 936         safe_strncpy(rem_addr, ap->sprint((struct sockaddr *) &remaddr,
 937                                           flag_not), sizeof(rem_addr));
 938         if ((strlen(rem_addr) + strlen(buffer)) > 22)
 939             rem_addr[22 - strlen(buffer)] = '\0';
 940         strcat(rem_addr, ":");
 941         strcat(rem_addr, buffer);
 942
 943         timers[0] = '\0';
 944         if (flag_opt)
 945             switch (timer_run) {
 946             case 0:
 947                 snprintf(timers, sizeof(timers), _("off (0.00/%ld/%d)"), retr, timeout);
 948                 break;
 949
 950             case 1:
 951             case 2:
 952                 snprintf(timers, sizeof(timers), _("on%d (%2.2f/%ld/%d)"), timer_run, (double) time_len / 100, retr, timeout);
 953                 break;
 954
 955             default:
 956                 snprintf(timers, sizeof(timers), _("unkn-%d (%2.2f/%ld/%d)"), timer_run, (double) time_len / 100,
 957                          retr, timeout);
 958                 break;
 959             }
 960         printf("udp   %6ld %6ld %-23s %-23s %-12s",
 961                rxq, txq, local_addr, rem_addr, udp_state);
 962
 963         finish_this_one(uid,inode,timers);
 964     }
 965 }
 966
 967 static int udp_info(void)
 968 {
 969     INFO_GUTS6(_PATH_PROCNET_UDP, _PATH_PROCNET_UDP6, "AF INET (udp)",
 970                udp_do_one);
 971 }
 972
 973 static void raw_do_one(int lnr, const char *line)
 974 {
 975     char buffer[8192], local_addr[64], rem_addr[64];
 976     char timers[64], more[512];
 977     int num, local_port, rem_port, d, state, timer_run, uid, timeout;
 978 #if HAVE_AFINET6
 979     struct sockaddr_in6 localaddr, remaddr;
 980     char addr6[INET6_ADDRSTRLEN];
 981     struct in6_addr in6;
 982     extern struct aftype inet6_aftype;
 983 #else
 984     struct sockaddr_in localaddr, remaddr;
 985 #endif
 986     struct aftype *ap;
 987     unsigned long rxq, txq, time_len, retr, inode;
 988
 989     if (lnr == 0)
 990         return;
 991
 992     more[0] = '\0';
 993     num = sscanf(line,
 994                  "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %lu %512s\n",
 995                  &d, local_addr, &local_port, rem_addr, &rem_port, &state,
 996           &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
 997
 998     if (strlen(local_addr) > 8) {
 999 #if HAVE_AFINET6
1000         sscanf(local_addr, "%08X%08X%08X%08X",
1001                &in6.s6_addr32[0], &in6.s6_addr32[1],
1002            &in6.s6_addr32[2], &in6.s6_addr32[3]);
1003     inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
1004         inet6_aftype.input(1, addr6, (struct sockaddr *) &localaddr);
1005         sscanf(rem_addr, "%08X%08X%08X%08X",
1006                &in6.s6_addr32[0], &in6.s6_addr32[1],
1007            &in6.s6_addr32[2], &in6.s6_addr32[3]);
1008     inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
1009         inet6_aftype.input(1, addr6, (struct sockaddr *) &remaddr);
1010         localaddr.sin6_family = AF_INET6;
1011         remaddr.sin6_family = AF_INET6;
1012 #endif
1013     } else {
1014         sscanf(local_addr, "%X",
1015                &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
1016         sscanf(rem_addr, "%X",
1017                &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
1018         ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
1019         ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
1020     }
1021 #if HAVE_AFINET6
1022     if ((ap = get_afntype(localaddr.sin6_family)) == NULL) {
1023         fprintf(stderr, _("netstat: unsupported address family %d !\n"), localaddr.sin6_family);
1024         return;
1025     }
1026 #else
1027     if ((ap = get_afntype(localaddr.sin_family)) == NULL) {
1028         fprintf(stderr, _("netstat: unsupported address family %d !\n"), localaddr.sin_family);
1029         return;
1030     }
1031 #endif
1032
1033     if (!flag_opt)
1034         more[0] = '\0';
1035
1036     if (num < 10) {
1037         fprintf(stderr, _("warning, got bogus raw line.\n"));
1038         return;
1039     }
1040
1041     if (flag_all || (notnull(remaddr) && !flag_lst) || (!notnull(remaddr) && flag_lst))
1042     {
1043         snprintf(buffer, sizeof(buffer), "%s",
1044                  get_sname(htons(local_port), "raw",
1045                            flag_not & FLAG_NUM_PORT));
1046         safe_strncpy(local_addr, ap->sprint((struct sockaddr *) &localaddr,
1047                                             flag_not), sizeof(local_addr));
1048         if ((strlen(local_addr) + strlen(buffer)) > 22)
1049             local_addr[22 - strlen(buffer)] = '\0';
1050         strcat(local_addr, ":");
1051         strcat(local_addr, buffer);
1052
1053         snprintf(buffer, sizeof(buffer), "%s",
1054                  get_sname(htons(rem_port), "raw", flag_not & FLAG_NUM_PORT));
1055         safe_strncpy(rem_addr, ap->sprint((struct sockaddr *) &remaddr,
1056                                           flag_not), sizeof(rem_addr));
1057         if ((strlen(rem_addr) + strlen(buffer)) > 22)
1058             rem_addr[22 - strlen(buffer)] = '\0';
1059         strcat(rem_addr, ":");
1060         strcat(rem_addr, buffer);
1061
1062         timers[0] = '\0';
1063         if (flag_opt)
1064             switch (timer_run) {
1065             case 0:
1066                 snprintf(timers, sizeof(timers), _("off (0.00/%ld/%d)"), retr, timeout);
1067                 break;
1068
1069             case 1:
1070             case 2:
1071                 snprintf(timers, sizeof(timers), _("on%d (%2.2f/%ld/%d)"), timer_run, (double) time_len / 100,
1072                          retr, timeout);
1073                 break;
1074
1075             default:
1076                 snprintf(timers, sizeof(timers), _("unkn-%d (%2.2f/%ld/%d)"),
1077                          timer_run, (double) time_len / 100,
1078                          retr, timeout);
1079                 break;
1080             }
1081         printf("raw   %6ld %6ld %-23s %-23s %-12d",
1082                rxq, txq, local_addr, rem_addr, state);
1083
1084         finish_this_one(uid,inode,timers);
1085     }
1086 }
1087
1088 static int raw_info(void)
1089 {
1090     INFO_GUTS6(_PATH_PROCNET_RAW, _PATH_PROCNET_RAW6, "AF INET (raw)",
1091                raw_do_one);
1092 }
1093
1094 #endif
1095
1096
1097 #if HAVE_AFUNIX
1098
1099 #define HAS_INODE 1
1100
1101 static void unix_do_one(int nr, const char *line)
1102 {
1103     static int has = 0;
1104     char path[MAXPATHLEN], ss_flags[32];
1105     char *ss_proto, *ss_state, *ss_type;
1106     int num, state, type;
1107     void *d;
1108     unsigned long refcnt, proto, flags, inode;
1109
1110     if (nr == 0) {
1111         if (strstr(line, "Inode"))
1112             has |= HAS_INODE;
1113         return;
1114     }
1115     path[0] = '\0';
1116     num = sscanf(line, "%p: %lX %lX %lX %X %X %lu %s",
1117                  &d, &refcnt, &proto, &flags, &type, &state, &inode, path);
1118     if (num < 6) {
1119         fprintf(stderr, _("warning, got bogus unix line.\n"));
1120         return;
1121     }
1122     if (!(has & HAS_INODE))
1123         snprintf(path,sizeof(path),"%lu",inode);
1124
1125     if (!flag_all) {
1126         if ((state == SS_UNCONNECTED) && (flags & SO_ACCEPTCON)) {
1127                 if (!flag_lst)
1128                         return;
1129         } else {
1130                 if (flag_lst)
1131                         return;
1132         }
1133     }
1134
1135     switch (proto) {
1136     case 0:
1137         ss_proto = "unix";
1138         break;
1139
1140     default:
1141         ss_proto = "??";
1142     }
1143
1144     switch (type) {
1145     case SOCK_STREAM:
1146         ss_type = _("STREAM");
1147         break;
1148
1149     case SOCK_DGRAM:
1150         ss_type = _("DGRAM");
1151         break;
1152
1153     case SOCK_RAW:
1154         ss_type = _("RAW");
1155         break;
1156
1157     case SOCK_RDM:
1158         ss_type = _("RDM");
1159         break;
1160
1161     case SOCK_SEQPACKET:
1162         ss_type = _("SEQPACKET");
1163         break;
1164
1165     default:
1166         ss_type = _("UNKNOWN");
1167     }
1168
1169     switch (state) {
1170     case SS_FREE:
1171         ss_state = _("FREE");
1172         break;
1173
1174     case SS_UNCONNECTED:
1175         /*
1176          * Unconnected sockets may be listening
1177          * for something.
1178          */
1179         if (flags & SO_ACCEPTCON) {
1180             ss_state = _("LISTENING");
1181         } else {
1182             ss_state = "";
1183         }
1184         break;
1185
1186     case SS_CONNECTING:
1187         ss_state = _("CONNECTING");
1188         break;
1189
1190     case SS_CONNECTED:
1191         ss_state = _("CONNECTED");
1192         break;
1193
1194     case SS_DISCONNECTING:
1195         ss_state = _("DISCONNECTING");
1196         break;
1197
1198     default:
1199         ss_state = _("UNKNOWN");
1200     }
1201
1202     strcpy(ss_flags, "[ ");
1203     if (flags & SO_ACCEPTCON)
1204         strcat(ss_flags, "ACC ");
1205     if (flags & SO_WAITDATA)
1206         strcat(ss_flags, "W ");
1207     if (flags & SO_NOSPACE)
1208         strcat(ss_flags, "N ");
1209
1210     strcat(ss_flags, "]");
1211
1212     printf("%-5s %-6ld %-11s %-10s %-13s ",
1213            ss_proto, refcnt, ss_flags, ss_type, ss_state);
1214     if (has & HAS_INODE)
1215         printf("%-8lu ",inode);
1216     else
1217         printf("-        ");
1218     if (flag_prg)
1219         printf("%-" PROGNAME_WIDTHs "s",(has & HAS_INODE?prg_cache_get(inode):"-"));
1220     puts(path);
1221 }
1222
1223 static int unix_info(void)
1224 {
1225
1226     printf(_("Active UNIX domain sockets "));
1227     if (flag_all)
1228         printf(_("(servers and established)"));
1229     else {
1230       if (flag_lst)
1231         printf(_("(only servers)"));
1232       else
1233         printf(_("(w/o servers)"));
1234     }
1235
1236     printf(_("\nProto RefCnt Flags       Type       State         I-Node"));
1237     print_progname_banner();
1238     printf(_(" Path\n"));       /* xxx */
1239
1240     {
1241         INFO_GUTS(_PATH_PROCNET_UNIX, "AF UNIX", unix_do_one);
1242     }
1243 }
1244 #endif
1245
1246
1247 #if HAVE_AFAX25
1248 static int ax25_info(void)
1249 {
1250     FILE *f;
1251     char buffer[256], buf[16];
1252     char *src, *dst, *dev, *p;
1253     int st, vs, vr, sendq, recvq, ret;
1254     int new = -1;               /* flag for new (2.1.x) kernels */
1255     static char *ax25_state[5] =
1256     {
1257         N_("LISTENING"),
1258         N_("SABM SENT"),
1259         N_("DISC SENT"),
1260         N_("ESTABLISHED"),
1261         N_("RECOVERY")
1262     };
1263     if (!(f = fopen(_PATH_PROCNET_AX25, "r"))) {
1264         if (errno != ENOENT) {
1265             perror(_PATH_PROCNET_AX25);
1266             return (-1);
1267         }
1268         if (flag_arg || flag_ver)
1269             ESYSNOT("netstat", "AF AX25");
1270         if (flag_arg)
1271             return (1);
1272         else
1273             return (0);
1274     }
1275     printf(_("Active AX.25 sockets\n"));
1276     printf(_("Dest       Source     Device  State        Vr/Vs    Send-Q  Recv-Q\n"));
1277     while (fgets(buffer, 256, f)) {
1278         if (new == -1) {
1279             if (!strncmp(buffer, "dest_addr", 9)) {
1280                 new = 0;
1281                 continue;       /* old kernels have a header line */
1282             } else
1283                 new = 1;
1284         }
1285         /*
1286          * In a network connection with no user socket the Snd-Q, Rcv-Q
1287          * and Inode fields are empty in 2.0.x and '*' in 2.1.x
1288          */
1289         sendq = 0;
1290         recvq = 0;
1291         if (new == 0) {
1292             dst = buffer;
1293             src = buffer + 10;
1294             dst[9] = 0;
1295             src[9] = 0;
1296             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",
1297                    buf, &st, &vs, &vr, &sendq, &recvq);
1298             if (ret != 4 && ret != 6) {
1299                 printf(_("Problem reading data from %s\n"), _PATH_PROCNET_AX25);
1300                 continue;
1301             }
1302             dev = buf;
1303         } else {
1304             p = buffer;
1305             while (*p != ' ') p++;
1306             p++;
1307             dev = p;
1308             while (*p != ' ') p++;
1309             *p++ = 0;
1310             src = p;
1311             while (*p != ' ') p++;
1312             *p++ = 0;
1313             dst = p;
1314             while (*p != ' ') p++;
1315             *p++ = 0;
1316             ret = sscanf(p, "%d %d %d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %d %d %*d",
1317                    &st, &vs, &vr, &sendq, &recvq);
1318             if (ret != 3 && ret != 5) {
1319                     printf(_("problem reading data from %s\n"), _PATH_PROCNET_AX25);
1320                     continue;
1321             }
1322             /*
1323              * FIXME: digipeaters should be handled somehow.
1324              * For now we just strip them.
1325              */
1326             p = dst;
1327             while (*p && *p != ',') p++;
1328             *p = 0;
1329         }
1330         printf("%-9s  %-9s  %-6s  %-11s  %03d/%03d  %-6d  %-6d\n",
1331                dst, src,
1332                dev,
1333                _(ax25_state[st]),
1334                vr, vs, sendq, recvq);
1335     }
1336     fclose(f);
1337     return 0;
1338 }
1339 #endif
1340
1341
1342 #if HAVE_AFIPX
1343 static int ipx_info(void)
1344 {
1345     FILE *f;
1346     char buf[256];
1347     unsigned long txq, rxq;
1348     unsigned int state;
1349     unsigned int uid;
1350     char *st;
1351     int nc;
1352     struct aftype *ap;
1353     struct passwd *pw;
1354     char sad[50], dad[50];
1355     struct sockaddr sa;
1356     unsigned sport = 0, dport = 0;
1357
1358     if (!(f = fopen(_PATH_PROCNET_IPX, "r"))) {
1359         if (errno != ENOENT) {
1360             perror(_PATH_PROCNET_IPX);
1361             return (-1);
1362         }
1363         if (flag_arg || flag_ver)
1364             ESYSNOT("netstat", "AF IPX");
1365         if (flag_arg)
1366             return (1);
1367         else
1368             return (0);
1369     }
1370     printf(_("Active IPX sockets\nProto Recv-Q Send-Q Local Address              Foreign Address            State"));   /* xxx */
1371     if (flag_exp > 1)
1372         printf(_(" User"));     /* xxx */
1373     printf("\n");
1374     if ((ap = get_afntype(AF_IPX)) == NULL) {
1375         EINTERN("netstat.c", "AF_IPX missing");
1376         return (-1);
1377     }
1378     fgets(buf, 255, f);
1379
1380     while (fgets(buf, 255, f) != NULL) {
1381         sscanf(buf, "%s %s %lX %lX %d %d",
1382                sad, dad, &txq, &rxq, &state, &uid);
1383         if ((st = rindex(sad, ':'))) {
1384             *st++ = '\0';
1385             sscanf(st, "%X", &sport);   /* net byt order */
1386             sport = ntohs(sport);
1387         } else {
1388             EINTERN("netstat.c", _PATH_PROCNET_IPX " sport format error");
1389             return (-1);
1390         }
1391         nc = 0;
1392         if (strcmp(dad, "Not_Connected") != 0) {
1393             if ((st = rindex(dad, ':'))) {
1394                 *st++ = '\0';
1395                 sscanf(st, "%X", &dport);       /* net byt order */
1396                 dport = ntohs(dport);
1397             } else {
1398                 EINTERN("netstat.c", _PATH_PROCNET_IPX " dport format error");
1399                 return (-1);
1400             }
1401         } else
1402             nc = 1;
1403
1404         switch (state) {
1405         case TCP_ESTABLISHED:
1406             st = _("ESTAB");
1407             break;
1408
1409         case TCP_CLOSE:
1410             st = "";
1411             break;
1412
1413         default:
1414             st = _("UNK.");
1415             break;
1416         }
1417
1418         /* Fetch and resolve the Source */
1419         (void) ap->input(4, sad, &sa);
1420         safe_strncpy(buf, ap->sprint(&sa, flag_not), sizeof(buf));
1421         snprintf(sad, sizeof(sad), "%s:%04X", buf, sport);
1422
1423         if (!nc) {
1424             /* Fetch and resolve the Destination */
1425             (void) ap->input(4, dad, &sa);
1426             safe_strncpy(buf, ap->sprint(&sa, flag_not), sizeof(buf));
1427             snprintf(dad, sizeof(dad), "%s:%04X", buf, dport);
1428         } else
1429             strcpy(dad, "-");
1430
1431         printf("IPX   %6ld %6ld %-26s %-26s %-5s", txq, rxq, sad, dad, st);
1432         if (flag_exp > 1) {
1433             if (!(flag_not & FLAG_NUM_USER) && ((pw = getpwuid(uid)) != NULL))
1434                 printf(" %-10s", pw->pw_name);
1435             else
1436                 printf(" %-10d", uid);
1437         }
1438         printf("\n");
1439     }
1440     fclose(f);
1441     return 0;
1442 }
1443 #endif
1444
1445 static int iface_info(void)
1446 {
1447     if (skfd < 0) {
1448         if ((skfd = sockets_open(0)) < 0) {
1449             perror("socket");
1450             exit(1);
1451         }
1452         printf(_("Kernel Interface table\n"));
1453     }
1454     if (flag_exp < 2) {
1455         ife_short = 1;
1456         printf(_("Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR   TX-OK TX-ERR TX-DRP TX-OVR Flg\n"));
1457     }
1458
1459     if (for_all_interfaces(do_if_print, &flag_all) < 0) {
1460         perror(_("missing interface information"));
1461         exit(1);
1462     }
1463     if (flag_cnt)
1464         if_cache_free();
1465     else {
1466         close(skfd);
1467         skfd = -1;
1468     }
1469
1470     return 0;
1471 }
1472
1473
1474 static void version(void)
1475 {
1476     printf("%s\n%s\n%s\n%s\n", Release, Version, Signature, Features);
1477     exit(E_VERSION);
1478 }
1479
1480
1481 static void usage(void)
1482 {
1483     fprintf(stderr, _("usage: netstat [-veenNcCF] [<Af>] -r         netstat {-V|--version|-h|--help}\n"));
1484     fprintf(stderr, _("       netstat [-vnNcaeol] [<Socket> ...]\n"));
1485     fprintf(stderr, _("       netstat { [-veenNac] -i | [-cnNe] -M | -s }\n\n"));
1486
1487     fprintf(stderr, _("        -r, --route              display routing table\n"));
1488     fprintf(stderr, _("        -i, --interfaces         display interface table\n"));
1489     fprintf(stderr, _("        -g, --groups             display multicast group memberships\n"));
1490     fprintf(stderr, _("        -s, --statistics         display networking statistics (like SNMP)\n"));
1491 #if HAVE_FW_MASQUERADE
1492     fprintf(stderr, _("        -M, --masquerade         display masqueraded connections\n\n"));
1493 #endif
1494     fprintf(stderr, _("        -v, --verbose            be verbose\n"));
1495     fprintf(stderr, _("        -n, --numeric            don't resolve names\n"));
1496     fprintf(stderr, _("        --numeric-hosts          don't resolve host names\n"));
1497     fprintf(stderr, _("        --numeric-ports          don't resolve port names\n"));
1498     fprintf(stderr, _("        --numeric-users          don't resolve user names\n"));
1499     fprintf(stderr, _("        -N, --symbolic           resolve hardware names\n"));
1500     fprintf(stderr, _("        -e, --extend             display other/more information\n"));
1501     fprintf(stderr, _("        -p, --programs           display PID/Program name for sockets\n"));
1502     fprintf(stderr, _("        -c, --continuous         continuous listing\n\n"));
1503     fprintf(stderr, _("        -l, --listening          display listening server sockets\n"));
1504     fprintf(stderr, _("        -a, --all, --listening   display all sockets (default: connected)\n"));
1505     fprintf(stderr, _("        -o, --timers             display timers\n"));
1506     fprintf(stderr, _("        -F, --fib                display Forwarding Information Base (default)\n"));
1507     fprintf(stderr, _("        -C, --cache              display routing cache instead of FIB\n\n"));
1508
1509     fprintf(stderr, _("  <Socket>={-t|--tcp} {-u|--udp} {-w|--raw} {-x|--unix} --ax25 --ipx --netrom\n"));
1510     fprintf(stderr, _("  <AF>=Use '-A <af>' or '--<af>'; default: %s\n"), DFLT_AF);
1511     fprintf(stderr, _("  List of possible address families (which support routing):\n"));
1512     print_aflist(1); /* 1 = routeable */
1513     exit(E_USAGE);
1514 }
1515
1516
1517 int main
1518  (int argc, char *argv[]) {
1519     int i;
1520     int lop;
1521     static struct option longopts[] =
1522     {
1523         AFTRANS_OPTS,
1524         {"version", 0, 0, 'V'},
1525         {"interfaces", 0, 0, 'i'},
1526         {"help", 0, 0, 'h'},
1527         {"route", 0, 0, 'r'},
1528 #if HAVE_FW_MASQUERADE
1529         {"masquerade", 0, 0, 'M'},
1530 #endif
1531         {"protocol", 1, 0, 'A'},
1532         {"tcp", 0, 0, 't'},
1533         {"udp", 0, 0, 'u'},
1534         {"raw", 0, 0, 'w'},
1535         {"unix", 0, 0, 'x'},
1536         {"listening", 0, 0, 'l'},
1537         {"all", 0, 0, 'a'},
1538         {"timers", 0, 0, 'o'},
1539         {"continuous", 0, 0, 'c'},
1540         {"extend", 0, 0, 'e'},
1541         {"programs", 0, 0, 'p'},
1542         {"verbose", 0, 0, 'v'},
1543         {"statistics", 0, 0, 's'},
1544         {"numeric", 0, 0, 'n'},
1545         {"numeric-hosts", 0, 0, '!'},
1546         {"numeric-ports", 0, 0, '@'},
1547         {"numeric-users", 0, 0, '#'},
1548         {"symbolic", 0, 0, 'N'},
1549         {"cache", 0, 0, 'C'},
1550         {"fib", 0, 0, 'F'},
1551         {"groups", 0, 0, 'g'},
1552         {NULL, 0, 0, 0}
1553     };
1554
1555 #if I18N
1556     setlocale (LC_ALL, "");
1557     bindtextdomain("net-tools", "/usr/share/locale");
1558     textdomain("net-tools");
1559 #endif
1560     getroute_init();            /* Set up AF routing support */
1561
1562     afname[0] = '\0';
1563     while ((i = getopt_long(argc, argv, "MCFA:acdegphinNorstuVv?wxl", longopts, &lop)) != EOF)
1564         switch (i) {
1565         case -1:
1566             break;
1567         case 1:
1568             if (lop < 0 || lop >= AFTRANS_CNT) {
1569                 EINTERN("netstat.c", "longopts 1 range");
1570                 break;
1571             }
1572             if (aftrans_opt(longopts[lop].name))
1573                 exit(1);
1574             break;
1575         case 'A':
1576             if (aftrans_opt(optarg))
1577                 exit(1);
1578             break;
1579         case 'M':
1580             flag_mas++;
1581             break;
1582         case 'a':
1583             flag_all++;
1584             break;
1585         case 'l':
1586             flag_lst++;
1587             break;
1588         case 'c':
1589             flag_cnt++;
1590             break;
1591
1592         case 'd':
1593             flag_deb++;
1594             break;
1595         case 'g':
1596             flag_igmp++;
1597             break;
1598         case 'e':
1599             flag_exp++;
1600             break;
1601         case 'p':
1602             flag_prg++;
1603             break;
1604         case 'i':
1605             flag_int++;
1606             break;
1607         case 'n':
1608             flag_not |= FLAG_NUM;
1609             break;
1610         case '!':
1611             flag_not |= FLAG_NUM_HOST;
1612             break;
1613         case '@':
1614             flag_not |= FLAG_NUM_PORT;
1615             break;
1616         case '#':
1617             flag_not |= FLAG_NUM_USER;
1618             break;
1619         case 'N':
1620             flag_not |= FLAG_SYM;
1621             break;
1622         case 'C':
1623             flag_cf |= FLAG_CACHE;
1624             break;
1625         case 'F':
1626             flag_cf |= FLAG_FIB;
1627             break;
1628         case 'o':
1629             flag_opt++;
1630             break;
1631         case 'V':
1632             version();
1633             /*NOTREACHED */
1634         case 'v':
1635             flag_ver |= FLAG_VERBOSE;
1636             break;
1637         case 'r':
1638             flag_rou++;
1639             break;
1640
1641         case 't':
1642             flag_tcp++;
1643             break;
1644
1645         case 'u':
1646             flag_udp++;
1647             break;
1648         case 'w':
1649             flag_raw++;
1650             break;
1651         case 'x':
1652             if (aftrans_opt("unix"))
1653                 exit(1);
1654             break;
1655         case '?':
1656         case 'h':
1657             usage();
1658         case 's':
1659             flag_sta++;
1660         }
1661
1662     if (flag_int + flag_rou + flag_mas + flag_sta > 1)
1663         usage();
1664
1665     if ((flag_inet || flag_inet6 || flag_sta) && !(flag_tcp || flag_udp || flag_raw))
1666         flag_tcp = flag_udp = flag_raw = 1;
1667
1668     if ((flag_tcp || flag_udp || flag_raw || flag_igmp) && !(flag_inet || flag_inet6))
1669         flag_inet = flag_inet6 = 1;
1670
1671     flag_arg = flag_tcp + flag_udp + flag_raw + flag_unx + flag_ipx
1672         + flag_ax25 + flag_netrom + flag_igmp + flag_x25;
1673
1674     if (flag_mas) {
1675 #if HAVE_FW_MASQUERADE && HAVE_AFINET
1676 #if MORE_THAN_ONE_MASQ_AF
1677         if (!afname[0])
1678             strcpy(afname, DFLT_AF);
1679 #endif
1680         for (;;) {
1681             i = ip_masq_info(flag_not & FLAG_NUM_HOST,
1682                              flag_not & FLAG_NUM_PORT, flag_exp);
1683             if (i || !flag_cnt)
1684                 break;
1685             sleep(1);
1686         }
1687 #else
1688         ENOSUPP("netstat.c", "FW_MASQUERADE");
1689         i = -1;
1690 #endif
1691         return (i);
1692     }
1693
1694     if (flag_sta) {
1695         inittab();
1696         parsesnmp(flag_raw, flag_tcp, flag_udp);
1697         exit(0);
1698     }
1699
1700     if (flag_rou) {
1701         int options = 0;
1702
1703         if (!afname[0])
1704             strcpy(afname, DFLT_AF);
1705
1706         if (flag_exp == 2)
1707             flag_exp = 1;
1708         else if (flag_exp == 1)
1709             flag_exp = 2;
1710
1711         options = (flag_exp & FLAG_EXT) | flag_not | flag_cf | flag_ver;
1712         if (!flag_cf)
1713             options |= FLAG_FIB;
1714
1715         for (;;) {
1716             i = route_info(afname, options);
1717             if (i || !flag_cnt)
1718                 break;
1719             sleep(1);
1720         }
1721         return (i);
1722     }
1723     if (flag_int) {
1724         for (;;) {
1725             i = iface_info();
1726             if (!flag_cnt || i)
1727                 break;
1728             sleep(1);
1729         }
1730         return (i);
1731     }
1732     for (;;) {
1733         if (!flag_arg || flag_tcp || flag_udp || flag_raw) {
1734 #if HAVE_AFINET
1735             prg_cache_load();
1736             printf(_("Active Internet connections "));  /* xxx */
1737
1738             if (flag_all)
1739                 printf(_("(servers and established)"));
1740             else {
1741               if (flag_lst)
1742                 printf(_("(only servers)"));
1743               else
1744                 printf(_("(w/o servers)"));
1745             }
1746             printf(_("\nProto Recv-Q Send-Q Local Address           Foreign Address         State      "));     /* xxx */
1747             if (flag_exp > 1)
1748                 printf(_(" User       Inode     "));
1749             print_progname_banner();
1750             if (flag_opt)
1751                 printf(_(" Timer"));    /* xxx */
1752             printf("\n");
1753 #else
1754             if (flag_arg) {
1755                 i = 1;
1756                 ENOSUPP("netstat", "AF INET");
1757             }
1758 #endif
1759         }
1760 #if HAVE_AFINET
1761         if (!flag_arg || flag_tcp) {
1762             i = tcp_info();
1763             if (i)
1764                 return (i);
1765         }
1766         if (!flag_arg || flag_udp) {
1767             i = udp_info();
1768             if (i)
1769                 return (i);
1770         }
1771         if (!flag_arg || flag_raw) {
1772             i = raw_info();
1773             if (i)
1774                 return (i);
1775         }
1776
1777         if (flag_igmp) {
1778 #if HAVE_AFINET6
1779             printf( "IPv6/");
1780 #endif
1781             printf( _("IPv4 Group Memberships\n") );
1782             printf( _("Interface       RefCnt Group\n") );
1783             printf( "--------------- ------ ---------------------\n" );
1784             i = igmp_info();
1785             if (i)
1786                 return (i);
1787         }
1788 #endif
1789
1790         if (!flag_arg || flag_unx) {
1791 #if HAVE_AFUNIX
1792             prg_cache_load();
1793             i = unix_info();
1794             if (i)
1795                 return (i);
1796 #else
1797             if (flag_arg) {
1798                 i = 1;
1799                 ENOSUPP("netstat", "AF UNIX");
1800             }
1801 #endif
1802         }
1803         if (!flag_arg || flag_ipx) {
1804 #if HAVE_AFIPX
1805             i = ipx_info();
1806             if (i)
1807                 return (i);
1808 #else
1809             if (flag_arg) {
1810                 i = 1;
1811                 ENOSUPP("netstat", "AF IPX");
1812             }
1813 #endif
1814         }
1815         if (!flag_arg || flag_ax25) {
1816 #if HAVE_AFAX25
1817             i = ax25_info();
1818             if (i)
1819                 return (i);
1820 #else
1821             if (flag_arg) {
1822                 i = 1;
1823                 ENOSUPP("netstat", "AF AX25");
1824             }
1825 #endif
1826         }
1827         if(!flag_arg || flag_x25) {
1828 #if HAVE_AFX25
1829             /* FIXME */
1830             i = x25_info();
1831             if (i)
1832                 return(i);
1833 #else
1834             if (flag_arg) {
1835                 i = 1;
1836                 ENOSUPP("netstat", "AF X25");
1837             }
1838 #endif
1839         }
1840         if (!flag_arg || flag_netrom) {
1841 #if HAVE_AFNETROM
1842             i = netrom_info();
1843             if (i)
1844                 return (i);
1845 #else
1846             if (flag_arg) {
1847                 i = 1;
1848                 ENOSUPP("netstat", "AF NETROM");
1849             }
1850 #endif
1851         }
1852         if (!flag_cnt || i)
1853             break;
1854         sleep(1);
1855         prg_cache_clear();
1856     }
1857     return (i);
1858 }