misc/ss.c

   1 /*
   2  * ss.c         "sockstat", socket statistics
   3  *
   4  *              This program is free software; you can redistribute it and/or
   5  *              modify it under the terms of the GNU General Public License
   6  *              as published by the Free Software Foundation; either version
   7  *              2 of the License, or (at your option) any later version.
   8  *
   9  * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  10  */
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <unistd.h>
  15 #include <syslog.h>
  16 #include <fcntl.h>
  17 #include <sys/ioctl.h>
  18 #include <sys/socket.h>
  19 #include <sys/uio.h>
  20 #include <netinet/in.h>
  21 #include <string.h>
  22 #include <errno.h>
  23 #include <netdb.h>
  24 #include <arpa/inet.h>
  25 #include <resolv.h>
  26 #include <dirent.h>
  27 #include <fnmatch.h>
  28 #include <getopt.h>
  29
  30 #include "utils.h"
  31 #include "rt_names.h"
  32 #include "ll_map.h"
  33 #include "libnetlink.h"
  34 #include "SNAPSHOT.h"
  35
  36 #include <netinet/tcp.h>
  37 #include <linux/inet_diag.h>
  38
  39 int resolve_hosts = 0;
  40 int resolve_services = 1;
  41 int preferred_family = AF_UNSPEC;
  42 int show_options = 0;
  43 int show_details = 0;
  44 int show_users = 0;
  45 int show_mem = 0;
  46 int show_tcpinfo = 0;
  47
  48 int netid_width;
  49 int state_width;
  50 int addrp_width;
  51 int addr_width;
  52 int serv_width;
  53 int screen_width;
  54
  55 static const char *TCP_PROTO = "tcp";
  56 static const char *UDP_PROTO = "udp";
  57 static const char *RAW_PROTO = "raw";
  58 static const char *dg_proto = NULL;
  59
  60 enum
  61 {
  62         TCP_DB,
  63         DCCP_DB,
  64         UDP_DB,
  65         RAW_DB,
  66         UNIX_DG_DB,
  67         UNIX_ST_DB,
  68         PACKET_DG_DB,
  69         PACKET_R_DB,
  70         NETLINK_DB,
  71         MAX_DB
  72 };
  73
  74 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
  75 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB))
  76 #define ALL_DB ((1<<MAX_DB)-1)
  77
  78 enum {
  79         SS_UNKNOWN,
  80         SS_ESTABLISHED,
  81         SS_SYN_SENT,
  82         SS_SYN_RECV,
  83         SS_FIN_WAIT1,
  84         SS_FIN_WAIT2,
  85         SS_TIME_WAIT,
  86         SS_CLOSE,
  87         SS_CLOSE_WAIT,
  88         SS_LAST_ACK,
  89         SS_LISTEN,
  90         SS_CLOSING,
  91         SS_MAX
  92 };
  93
  94 #define SS_ALL ((1<<SS_MAX)-1)
  95
  96 #include "ssfilter.h"
  97
  98 struct filter
  99 {
 100         int dbs;
 101         int states;
 102         int families;
 103         struct ssfilter *f;
 104 };
 105
 106 struct filter default_filter = {
 107         .dbs    =  (1<<TCP_DB),
 108         .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
 109         .families= (1<<AF_INET)|(1<<AF_INET6),
 110 };
 111
 112 struct filter current_filter;
 113
 114 static FILE *generic_proc_open(const char *env, const char *name)
 115 {
 116         const char *p = getenv(env);
 117         char store[128];
 118
 119         if (!p) {
 120                 p = getenv("PROC_ROOT") ? : "/proc";
 121                 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
 122                 p = store;
 123         }
 124
 125         return fopen(p, "r");
 126 }
 127
 128 static FILE *net_tcp_open(void)
 129 {
 130         return generic_proc_open("PROC_NET_TCP", "net/tcp");
 131 }
 132
 133 static FILE *net_tcp6_open(void)
 134 {
 135         return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
 136 }
 137
 138 static FILE *net_udp_open(void)
 139 {
 140         return generic_proc_open("PROC_NET_UDP", "net/udp");
 141 }
 142
 143 static FILE *net_udp6_open(void)
 144 {
 145         return generic_proc_open("PROC_NET_UDP6", "net/udp6");
 146 }
 147
 148 static FILE *net_raw_open(void)
 149 {
 150         return generic_proc_open("PROC_NET_RAW", "net/raw");
 151 }
 152
 153 static FILE *net_raw6_open(void)
 154 {
 155         return generic_proc_open("PROC_NET_RAW6", "net/raw6");
 156 }
 157
 158 static FILE *net_unix_open(void)
 159 {
 160         return generic_proc_open("PROC_NET_UNIX", "net/unix");
 161 }
 162
 163 static FILE *net_packet_open(void)
 164 {
 165         return generic_proc_open("PROC_NET_PACKET", "net/packet");
 166 }
 167
 168 static FILE *net_netlink_open(void)
 169 {
 170         return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
 171 }
 172
 173 static FILE *slabinfo_open(void)
 174 {
 175         return generic_proc_open("PROC_SLABINFO", "slabinfo");
 176 }
 177
 178 static FILE *net_sockstat_open(void)
 179 {
 180         return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
 181 }
 182
 183 static FILE *net_sockstat6_open(void)
 184 {
 185         return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
 186 }
 187
 188 static FILE *net_snmp_open(void)
 189 {
 190         return generic_proc_open("PROC_NET_SNMP", "net/snmp");
 191 }
 192
 193 static FILE *ephemeral_ports_open(void)
 194 {
 195         return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
 196 }
 197
 198 int find_users(unsigned ino, char *buf, int buflen)
 199 {
 200         char pattern[64];
 201         int  pattern_len;
 202         char *ptr = buf;
 203         char name[1024];
 204         DIR *dir;
 205         struct dirent *d;
 206         int cnt = 0;
 207         int nameoff;
 208
 209         if (!ino)
 210                 return 0;
 211
 212         sprintf(pattern, "socket:[%u]", ino);
 213         pattern_len = strlen(pattern);
 214
 215         strncpy(name, getenv("PROC_ROOT") ? : "/proc/", sizeof(name)/2);
 216         name[sizeof(name)/2] = 0;
 217         if (strlen(name) == 0 ||
 218             name[strlen(name)-1] != '/')
 219                 strcat(name, "/");
 220         nameoff = strlen(name);
 221         if ((dir = opendir(name)) == NULL)
 222                 return 0;
 223
 224         while ((d = readdir(dir)) != NULL) {
 225                 DIR *dir1;
 226                 struct dirent *d1;
 227                 int pid;
 228                 int pos;
 229                 char crap;
 230                 char process[16];
 231
 232                 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
 233                         continue;
 234
 235                 sprintf(name+nameoff, "%d/fd/", pid);
 236                 pos = strlen(name);
 237                 if ((dir1 = opendir(name)) == NULL)
 238                         continue;
 239
 240                 process[0] = 0;
 241
 242                 while ((d1 = readdir(dir1)) != NULL) {
 243                         int fd, n;
 244                         char lnk[64];
 245
 246                         if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
 247                                 continue;
 248
 249                         sprintf(name+pos, "%d", fd);
 250                         n = readlink(name, lnk, sizeof(lnk)-1);
 251                         if (n != pattern_len ||
 252                             memcmp(lnk, pattern, n))
 253                                 continue;
 254
 255                         if (ptr-buf >= buflen-1)
 256                                 break;
 257
 258                         if (process[0] == 0) {
 259                                 char tmp[1024];
 260                                 FILE *fp;
 261                                 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
 262                                          getenv("PROC_ROOT") ? : "/proc", pid);
 263                                 if ((fp = fopen(tmp, "r")) != NULL) {
 264                                         fscanf(fp, "%*d (%[^)])", process);
 265                                         fclose(fp);
 266                                 }
 267                         }
 268
 269                         snprintf(ptr, buflen-(ptr-buf), "(\"%s\",%d,%d),", process, pid, fd);
 270                         ptr += strlen(ptr);
 271                         cnt++;
 272                 }
 273                 closedir(dir1);
 274         }
 275         closedir(dir);
 276         if (ptr != buf)
 277                 ptr[-1] = 0;
 278         return cnt;
 279 }
 280
 281
 282 /* Get stats from slab */
 283
 284 struct slabstat
 285 {
 286         int socks;
 287         int tcp_ports;
 288         int tcp_tws;
 289         int tcp_syns;
 290         int skbs;
 291 };
 292
 293 struct slabstat slabstat;
 294
 295 static const char *slabstat_ids[] =
 296 {
 297         "sock",
 298         "tcp_bind_bucket",
 299         "tcp_tw_bucket",
 300         "tcp_open_request",
 301         "skbuff_head_cache",
 302 };
 303
 304 int get_slabstat(struct slabstat *s)
 305 {
 306         char buf[256];
 307         FILE *fp;
 308         int cnt;
 309
 310         memset(s, 0, sizeof(*s));
 311
 312         fp = slabinfo_open();
 313         if (!fp)
 314                 return -1;
 315
 316         cnt = sizeof(*s)/sizeof(int);
 317
 318         fgets(buf, sizeof(buf), fp);
 319         while(fgets(buf, sizeof(buf), fp) != NULL) {
 320                 int i;
 321                 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
 322                         if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
 323                                 sscanf(buf, "%*s%d", ((int *)s) + i);
 324                                 cnt--;
 325                                 break;
 326                         }
 327                 }
 328                 if (cnt <= 0)
 329                         break;
 330         }
 331
 332         fclose(fp);
 333         return 0;
 334 }
 335
 336 static const char *sstate_name[] = {
 337         "UNKNOWN",
 338         [TCP_ESTABLISHED] = "ESTAB",
 339         [TCP_SYN_SENT] = "SYN-SENT",
 340         [TCP_SYN_RECV] = "SYN-RECV",
 341         [TCP_FIN_WAIT1] = "FIN-WAIT-1",
 342         [TCP_FIN_WAIT2] = "FIN-WAIT-2",
 343         [TCP_TIME_WAIT] = "TIME-WAIT",
 344         [TCP_CLOSE] = "UNCONN",
 345         [TCP_CLOSE_WAIT] = "CLOSE-WAIT",
 346         [TCP_LAST_ACK] = "LAST-ACK",
 347         [TCP_LISTEN] =  "LISTEN",
 348         [TCP_CLOSING] = "CLOSING",
 349 };
 350
 351 static const char *sstate_namel[] = {
 352         "UNKNOWN",
 353         [TCP_ESTABLISHED] = "established",
 354         [TCP_SYN_SENT] = "syn-sent",
 355         [TCP_SYN_RECV] = "syn-recv",
 356         [TCP_FIN_WAIT1] = "fin-wait-1",
 357         [TCP_FIN_WAIT2] = "fin-wait-2",
 358         [TCP_TIME_WAIT] = "time-wait",
 359         [TCP_CLOSE] = "unconnected",
 360         [TCP_CLOSE_WAIT] = "close-wait",
 361         [TCP_LAST_ACK] = "last-ack",
 362         [TCP_LISTEN] =  "listening",
 363         [TCP_CLOSING] = "closing",
 364 };
 365
 366 struct tcpstat
 367 {
 368         inet_prefix     local;
 369         inet_prefix     remote;
 370         int             lport;
 371         int             rport;
 372         int             state;
 373         int             rq, wq;
 374         int             timer;
 375         int             timeout;
 376         int             retrs;
 377         unsigned        ino;
 378         int             probes;
 379         unsigned        uid;
 380         int             refcnt;
 381         unsigned long long sk;
 382         int             rto, ato, qack, cwnd, ssthresh;
 383 };
 384
 385 static const char *tmr_name[] = {
 386         "off",
 387         "on",
 388         "keepalive",
 389         "timewait",
 390         "persist",
 391         "unknown"
 392 };
 393
 394 const char *print_ms_timer(int timeout)
 395 {
 396         static char buf[64];
 397         int secs, msecs, minutes;
 398         if (timeout < 0)
 399                 timeout = 0;
 400         secs = timeout/1000;
 401         minutes = secs/60;
 402         secs = secs%60;
 403         msecs = timeout%1000;
 404         buf[0] = 0;
 405         if (minutes) {
 406                 msecs = 0;
 407                 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
 408                 if (minutes > 9)
 409                         secs = 0;
 410         }
 411         if (secs) {
 412                 if (secs > 9)
 413                         msecs = 0;
 414                 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
 415         }
 416         if (msecs)
 417                 sprintf(buf+strlen(buf), "%03dms", msecs);
 418         return buf;
 419 }
 420
 421 const char *print_hz_timer(int timeout)
 422 {
 423         int hz = get_hz();
 424         return print_ms_timer(((timeout*1000) + hz-1)/hz);
 425 }
 426
 427 struct scache
 428 {
 429         struct scache *next;
 430         int port;
 431         char *name;
 432         const char *proto;
 433 };
 434
 435 struct scache *rlist;
 436
 437 void init_service_resolver(void)
 438 {
 439         char buf[128];
 440         FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
 441         if (fp) {
 442                 fgets(buf, sizeof(buf), fp);
 443                 while (fgets(buf, sizeof(buf), fp) != NULL) {
 444                         unsigned int progn, port;
 445                         char proto[128], prog[128];
 446                         if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
 447                                    &port, prog+4) == 4) {
 448                                 struct scache *c = malloc(sizeof(*c));
 449                                 if (c) {
 450                                         c->port = port;
 451                                         memcpy(prog, "rpc.", 4);
 452                                         c->name = strdup(prog);
 453                                         if (strcmp(proto, TCP_PROTO) == 0)
 454                                                 c->proto = TCP_PROTO;
 455                                         else if (strcmp(proto, UDP_PROTO) == 0)
 456                                                 c->proto = UDP_PROTO;
 457                                         else
 458                                                 c->proto = NULL;
 459                                         c->next = rlist;
 460                                         rlist = c;
 461                                 }
 462                         }
 463                 }
 464         }
 465 }
 466
 467 static int ip_local_port_min, ip_local_port_max;
 468
 469 /* Even do not try default linux ephemeral port ranges:
 470  * default /etc/services contains so much of useless crap
 471  * wouldbe "allocated" to this area that resolution
 472  * is really harmful. I shrug each time when seeing
 473  * "socks" or "cfinger" in dumps.
 474  */
 475 static int is_ephemeral(int port)
 476 {
 477         if (!ip_local_port_min) {
 478                 FILE *f = ephemeral_ports_open();
 479                 if (f) {
 480                         fscanf(f, "%d %d",
 481                                &ip_local_port_min, &ip_local_port_max);
 482                         fclose(f);
 483                 } else {
 484                         ip_local_port_min = 1024;
 485                         ip_local_port_max = 4999;
 486                 }
 487         }
 488
 489         return (port >= ip_local_port_min && port<= ip_local_port_max);
 490 }
 491
 492
 493 const char *__resolve_service(int port)
 494 {
 495         struct scache *c;
 496
 497         for (c = rlist; c; c = c->next) {
 498                 if (c->port == port && c->proto == dg_proto)
 499                         return c->name;
 500         }
 501
 502         if (!is_ephemeral(port)) {
 503                 static int notfirst;
 504                 struct servent *se;
 505                 if (!notfirst) {
 506                         setservent(1);
 507                         notfirst = 1;
 508                 }
 509                 se = getservbyport(htons(port), dg_proto);
 510                 if (se)
 511                         return se->s_name;
 512         }
 513
 514         return NULL;
 515 }
 516
 517
 518 const char *resolve_service(int port)
 519 {
 520         static char buf[128];
 521         static struct scache cache[256];
 522
 523         if (port == 0) {
 524                 buf[0] = '*';
 525                 buf[1] = 0;
 526                 return buf;
 527         }
 528
 529         if (resolve_services) {
 530                 if (dg_proto == RAW_PROTO) {
 531                         return inet_proto_n2a(port, buf, sizeof(buf));
 532                 } else {
 533                         struct scache *c;
 534                         const char *res;
 535                         int hash = (port^(((unsigned long)dg_proto)>>2))&255;
 536
 537                         for (c = &cache[hash]; c; c = c->next) {
 538                                 if (c->port == port &&
 539                                     c->proto == dg_proto) {
 540                                         if (c->name)
 541                                                 return c->name;
 542                                         goto do_numeric;
 543                                 }
 544                         }
 545
 546                         if ((res = __resolve_service(port)) != NULL) {
 547                                 if ((c = malloc(sizeof(*c))) == NULL)
 548                                         goto do_numeric;
 549                         } else {
 550                                 c = &cache[hash];
 551                                 if (c->name)
 552                                         free(c->name);
 553                         }
 554                         c->port = port;
 555                         c->name = NULL;
 556                         c->proto = dg_proto;
 557                         if (res) {
 558                                 c->name = strdup(res);
 559                                 c->next = cache[hash].next;
 560                                 cache[hash].next = c;
 561                         }
 562                         if (c->name)
 563                                 return c->name;
 564                 }
 565         }
 566
 567         do_numeric:
 568         sprintf(buf, "%u", port);
 569         return buf;
 570 }
 571
 572 void formatted_print(const inet_prefix *a, int port)
 573 {
 574         char buf[1024];
 575         const char *ap = buf;
 576         int est_len;
 577
 578         est_len = addr_width;
 579
 580         if (a->family == AF_INET) {
 581                 if (a->data[0] == 0) {
 582                         buf[0] = '*';
 583                         buf[1] = 0;
 584                 } else {
 585                         ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
 586                 }
 587         } else {
 588                 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
 589                 est_len = strlen(ap);
 590                 if (est_len <= addr_width)
 591                         est_len = addr_width;
 592                 else
 593                         est_len = addr_width + ((est_len-addr_width+3)/4)*4;
 594         }
 595         printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
 596 }
 597
 598 struct aafilter
 599 {
 600         inet_prefix     addr;
 601         int             port;
 602         struct aafilter *next;
 603 };
 604
 605 int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, int plen)
 606 {
 607         if (!inet_addr_match(a, p, plen))
 608                 return 0;
 609
 610         /* Cursed "v4 mapped" addresses: v4 mapped socket matches
 611          * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
 612          * sockets. Fair? */
 613         if (p->family == AF_INET && a->family == AF_INET6) {
 614                 if (a->data[0] == 0 && a->data[1] == 0 &&
 615                     a->data[2] == htonl(0xffff)) {
 616                         inet_prefix tmp = *a;
 617                         tmp.data[0] = a->data[3];
 618                         return inet_addr_match(&tmp, p, plen);
 619                 }
 620         }
 621         return 1;
 622 }
 623
 624 int unix_match(const inet_prefix *a, const inet_prefix *p)
 625 {
 626         char *addr, *pattern;
 627         memcpy(&addr, a->data, sizeof(addr));
 628         memcpy(&pattern, p->data, sizeof(pattern));
 629         if (pattern == NULL)
 630                 return 1;
 631         if (addr == NULL)
 632                 addr = "";
 633         return !fnmatch(pattern, addr, 0);
 634 }
 635
 636 int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
 637 {
 638         switch (f->type) {
 639                 case SSF_S_AUTO:
 640         {
 641                 static int low, high=65535;
 642
 643                 if (s->local.family == AF_UNIX) {
 644                         char *p;
 645                         memcpy(&p, s->local.data, sizeof(p));
 646                         return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
 647                                              strspn(p+1, "0123456789abcdef") == 5);
 648                 }
 649                 if (s->local.family == AF_PACKET)
 650                         return s->lport == 0 && s->local.data == 0;
 651                 if (s->local.family == AF_NETLINK)
 652                         return s->lport < 0;
 653
 654                 if (!low) {
 655                         FILE *fp = ephemeral_ports_open();
 656                         if (fp) {
 657                                 fscanf(fp, "%d%d", &low, &high);
 658                                 fclose(fp);
 659                         }
 660                 }
 661                 return s->lport >= low && s->lport <= high;
 662         }
 663                 case SSF_DCOND:
 664         {
 665                 struct aafilter *a = (void*)f->pred;
 666                 if (a->addr.family == AF_UNIX)
 667                         return unix_match(&s->remote, &a->addr);
 668                 if (a->port != -1 && a->port != s->rport)
 669                         return 0;
 670                 if (a->addr.bitlen) {
 671                         do {
 672                                 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
 673                                         return 1;
 674                         } while ((a = a->next) != NULL);
 675                         return 0;
 676                 }
 677                 return 1;
 678         }
 679                 case SSF_SCOND:
 680         {
 681                 struct aafilter *a = (void*)f->pred;
 682                 if (a->addr.family == AF_UNIX)
 683                         return unix_match(&s->local, &a->addr);
 684                 if (a->port != -1 && a->port != s->lport)
 685                         return 0;
 686                 if (a->addr.bitlen) {
 687                         do {
 688                                 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
 689                                         return 1;
 690                         } while ((a = a->next) != NULL);
 691                         return 0;
 692                 }
 693                 return 1;
 694         }
 695                 case SSF_D_GE:
 696         {
 697                 struct aafilter *a = (void*)f->pred;
 698                 return s->rport >= a->port;
 699         }
 700                 case SSF_D_LE:
 701         {
 702                 struct aafilter *a = (void*)f->pred;
 703                 return s->rport <= a->port;
 704         }
 705                 case SSF_S_GE:
 706         {
 707                 struct aafilter *a = (void*)f->pred;
 708                 return s->lport >= a->port;
 709         }
 710                 case SSF_S_LE:
 711         {
 712                 struct aafilter *a = (void*)f->pred;
 713                 return s->lport <= a->port;
 714         }
 715
 716                 /* Yup. It is recursion. Sorry. */
 717                 case SSF_AND:
 718                 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
 719                 case SSF_OR:
 720                 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
 721                 case SSF_NOT:
 722                 return !run_ssfilter(f->pred, s);
 723                 default:
 724                 abort();
 725         }
 726 }
 727
 728 /* Relocate external jumps by reloc. */
 729 static void ssfilter_patch(char *a, int len, int reloc)
 730 {
 731         while (len > 0) {
 732                 struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a;
 733                 if (op->no == len+4)
 734                         op->no += reloc;
 735                 len -= op->yes;
 736                 a += op->yes;
 737         }
 738         if (len < 0)
 739                 abort();
 740 }
 741
 742 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
 743 {
 744         switch (f->type) {
 745                 case SSF_S_AUTO:
 746         {
 747                 if (!(*bytecode=malloc(4))) abort();
 748                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
 749                 return 8;
 750         }
 751                 case SSF_DCOND:
 752                 case SSF_SCOND:
 753         {
 754                 struct aafilter *a = (void*)f->pred;
 755                 struct aafilter *b;
 756                 char *ptr;
 757                 int  code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
 758                 int len = 0;
 759
 760                 for (b=a; b; b=b->next) {
 761                         len += 4 + sizeof(struct inet_diag_hostcond);
 762                         if (a->addr.family == AF_INET6)
 763                                 len += 16;
 764                         else
 765                                 len += 4;
 766                         if (b->next)
 767                                 len += 4;
 768                 }
 769                 if (!(ptr = malloc(len))) abort();
 770                 *bytecode = ptr;
 771                 for (b=a; b; b=b->next) {
 772                         struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
 773                         int alen = (a->addr.family == AF_INET6 ? 16 : 4);
 774                         int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
 775                         struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4);
 776
 777                         *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
 778                         cond->family = a->addr.family;
 779                         cond->port = a->port;
 780                         cond->prefix_len = a->addr.bitlen;
 781                         memcpy(cond->addr, a->addr.data, alen);
 782                         ptr += oplen;
 783                         if (b->next) {
 784                                 op = (struct inet_diag_bc_op *)ptr;
 785                                 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
 786                                 ptr += 4;
 787                         }
 788                 }
 789                 return ptr - *bytecode;
 790         }
 791                 case SSF_D_GE:
 792         {
 793                 struct aafilter *x = (void*)f->pred;
 794                 if (!(*bytecode=malloc(8))) abort();
 795                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
 796                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 797                 return 8;
 798         }
 799                 case SSF_D_LE:
 800         {
 801                 struct aafilter *x = (void*)f->pred;
 802                 if (!(*bytecode=malloc(8))) abort();
 803                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
 804                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 805                 return 8;
 806         }
 807                 case SSF_S_GE:
 808         {
 809                 struct aafilter *x = (void*)f->pred;
 810                 if (!(*bytecode=malloc(8))) abort();
 811                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
 812                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 813                 return 8;
 814         }
 815                 case SSF_S_LE:
 816         {
 817                 struct aafilter *x = (void*)f->pred;
 818                 if (!(*bytecode=malloc(8))) abort();
 819                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
 820                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 821                 return 8;
 822         }
 823
 824                 case SSF_AND:
 825         {
 826                 char *a1, *a2, *a, l1, l2;
 827                 l1 = ssfilter_bytecompile(f->pred, &a1);
 828                 l2 = ssfilter_bytecompile(f->post, &a2);
 829                 if (!(a = malloc(l1+l2))) abort();
 830                 memcpy(a, a1, l1);
 831                 memcpy(a+l1, a2, l2);
 832                 free(a1); free(a2);
 833                 ssfilter_patch(a, l1, l2);
 834                 *bytecode = a;
 835                 return l1+l2;
 836         }
 837                 case SSF_OR:
 838         {
 839                 char *a1, *a2, *a, l1, l2;
 840                 l1 = ssfilter_bytecompile(f->pred, &a1);
 841                 l2 = ssfilter_bytecompile(f->post, &a2);
 842                 if (!(a = malloc(l1+l2+4))) abort();
 843                 memcpy(a, a1, l1);
 844                 memcpy(a+l1+4, a2, l2);
 845                 free(a1); free(a2);
 846                 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
 847                 *bytecode = a;
 848                 return l1+l2+4;
 849         }
 850                 case SSF_NOT:
 851         {
 852                 char *a1, *a, l1;
 853                 l1 = ssfilter_bytecompile(f->pred, &a1);
 854                 if (!(a = malloc(l1+4))) abort();
 855                 memcpy(a, a1, l1);
 856                 free(a1);
 857                 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
 858                 *bytecode = a;
 859                 return l1+4;
 860         }
 861                 default:
 862                 abort();
 863         }
 864 }
 865
 866 static int remember_he(struct aafilter *a, struct hostent *he)
 867 {
 868         char **ptr = he->h_addr_list;
 869         int cnt = 0;
 870         int len;
 871
 872         if (he->h_addrtype == AF_INET)
 873                 len = 4;
 874         else if (he->h_addrtype == AF_INET6)
 875                 len = 16;
 876         else
 877                 return 0;
 878
 879         while (*ptr) {
 880                 struct aafilter *b = a;
 881                 if (a->addr.bitlen) {
 882                         if ((b = malloc(sizeof(*b))) == NULL)
 883                                 return cnt;
 884                         *b = *a;
 885                         b->next = a->next;
 886                         a->next = b;
 887                 }
 888                 memcpy(b->addr.data, *ptr, len);
 889                 b->addr.bytelen = len;
 890                 b->addr.bitlen = len*8;
 891                 b->addr.family = he->h_addrtype;
 892                 ptr++;
 893                 cnt++;
 894         }
 895         return cnt;
 896 }
 897
 898 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
 899 {
 900         static int notfirst;
 901         int cnt = 0;
 902         struct hostent *he;
 903
 904         a->addr.bitlen = 0;
 905         if (!notfirst) {
 906                 sethostent(1);
 907                 notfirst = 1;
 908         }
 909         he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
 910         if (he)
 911                 cnt = remember_he(a, he);
 912         if (fam == AF_UNSPEC) {
 913                 he = gethostbyname2(addr, AF_INET6);
 914                 if (he)
 915                         cnt += remember_he(a, he);
 916         }
 917         return !cnt;
 918 }
 919
 920 static int xll_initted = 0;
 921
 922 static void xll_init(void)
 923 {
 924         struct rtnl_handle rth;
 925         rtnl_open(&rth, 0);
 926         ll_init_map(&rth);
 927         rtnl_close(&rth);
 928         xll_initted = 1;
 929 }
 930
 931 static const char *xll_index_to_name(int index)
 932 {
 933         if (!xll_initted)
 934                 xll_init();
 935         return ll_index_to_name(index);
 936 }
 937
 938 static int xll_name_to_index(const char *dev)
 939 {
 940         if (!xll_initted)
 941                 xll_init();
 942         return ll_name_to_index(dev);
 943 }
 944
 945 void *parse_hostcond(char *addr)
 946 {
 947         char *port = NULL;
 948         struct aafilter a;
 949         struct aafilter *res;
 950         int fam = preferred_family;
 951
 952         memset(&a, 0, sizeof(a));
 953         a.port = -1;
 954
 955         if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
 956                 char *p;
 957                 a.addr.family = AF_UNIX;
 958                 if (strncmp(addr, "unix:", 5) == 0)
 959                         addr+=5;
 960                 p = strdup(addr);
 961                 a.addr.bitlen = 8*strlen(p);
 962                 memcpy(a.addr.data, &p, sizeof(p));
 963                 goto out;
 964         }
 965
 966         if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
 967                 a.addr.family = AF_PACKET;
 968                 a.addr.bitlen = 0;
 969                 if (strncmp(addr, "link:", 5) == 0)
 970                         addr+=5;
 971                 port = strchr(addr, ':');
 972                 if (port) {
 973                         *port = 0;
 974                         if (port[1] && strcmp(port+1, "*")) {
 975                                 if (get_integer(&a.port, port+1, 0)) {
 976                                         if ((a.port = xll_name_to_index(port+1)) <= 0)
 977                                                 return NULL;
 978                                 }
 979                         }
 980                 }
 981                 if (addr[0] && strcmp(addr, "*")) {
 982                         unsigned short tmp;
 983                         a.addr.bitlen = 32;
 984                         if (ll_proto_a2n(&tmp, addr))
 985                                 return NULL;
 986                         a.addr.data[0] = ntohs(tmp);
 987                 }
 988                 goto out;
 989         }
 990
 991         if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
 992                 a.addr.family = AF_NETLINK;
 993                 a.addr.bitlen = 0;
 994                 if (strncmp(addr, "netlink:", 8) == 0)
 995                         addr+=8;
 996                 port = strchr(addr, ':');
 997                 if (port) {
 998                         *port = 0;
 999                         if (port[1] && strcmp(port+1, "*")) {
1000                                 if (get_integer(&a.port, port+1, 0)) {
1001                                         if (strcmp(port+1, "kernel") == 0)
1002                                                 a.port = 0;
1003                                         else
1004                                                 return NULL;
1005                                 }
1006                         }
1007                 }
1008                 if (addr[0] && strcmp(addr, "*")) {
1009                         a.addr.bitlen = 32;
1010                         if (get_u32(a.addr.data, addr, 0)) {
1011                                 if (strcmp(addr, "rtnl") == 0)
1012                                         a.addr.data[0] = 0;
1013                                 else if (strcmp(addr, "fw") == 0)
1014                                         a.addr.data[0] = 3;
1015                                 else if (strcmp(addr, "tcpdiag") == 0)
1016                                         a.addr.data[0] = 4;
1017                                 else
1018                                         return NULL;
1019                         }
1020                 }
1021                 goto out;
1022         }
1023
1024         if (strncmp(addr, "inet:", 5) == 0) {
1025                 addr += 5;
1026                 fam = AF_INET;
1027         } else if (strncmp(addr, "inet6:", 6) == 0) {
1028                 addr += 6;
1029                 fam = AF_INET6;
1030         }
1031
1032         /* URL-like literal [] */
1033         if (addr[0] == '[') {
1034                 addr++;
1035                 if ((port = strchr(addr, ']')) == NULL)
1036                         return NULL;
1037                 *port++ = 0;
1038         } else if (addr[0] == '*') {
1039                 port = addr+1;
1040         } else {
1041                 port = strrchr(strchr(addr, '/') ? : addr, ':');
1042         }
1043         if (port && *port) {
1044                 if (*port != ':')
1045                         return NULL;
1046                 *port++ = 0;
1047                 if (*port && *port != '*') {
1048                         if (get_integer(&a.port, port, 0)) {
1049                                 struct servent *se1 = NULL;
1050                                 struct servent *se2 = NULL;
1051                                 if (current_filter.dbs&(1<<UDP_DB))
1052                                         se1 = getservbyname(port, UDP_PROTO);
1053                                 if (current_filter.dbs&(1<<TCP_DB))
1054                                         se2 = getservbyname(port, TCP_PROTO);
1055                                 if (se1 && se2 && se1->s_port != se2->s_port) {
1056                                         fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1057                                         return NULL;
1058                                 }
1059                                 if (!se1)
1060                                         se1 = se2;
1061                                 if (se1) {
1062                                         a.port = ntohs(se1->s_port);
1063                                 } else {
1064                                         struct scache *s;
1065                                         for (s = rlist; s; s = s->next) {
1066                                                 if ((s->proto == UDP_PROTO &&
1067                                                      (current_filter.dbs&(1<<UDP_DB))) ||
1068                                                     (s->proto == TCP_PROTO &&
1069                                                      (current_filter.dbs&(1<<TCP_DB)))) {
1070                                                         if (s->name && strcmp(s->name, port) == 0) {
1071                                                                 if (a.port > 0 && a.port != s->port) {
1072                                                                         fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1073                                                                         return NULL;
1074                                                                 }
1075                                                                 a.port = s->port;
1076                                                         }
1077                                                 }
1078                                         }
1079                                         if (a.port <= 0) {
1080                                                 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1081                                                 return NULL;
1082                                         }
1083                                 }
1084                         }
1085                 }
1086         }
1087         if (addr && *addr && *addr != '*') {
1088                 if (get_prefix_1(&a.addr, addr, fam)) {
1089                         if (get_dns_host(&a, addr, fam)) {
1090                                 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1091                                 return NULL;
1092                         }
1093                 }
1094         }
1095
1096         out:
1097         res = malloc(sizeof(*res));
1098         if (res)
1099                 memcpy(res, &a, sizeof(a));
1100         return res;
1101 }
1102
1103 static int tcp_show_line(char *line, const struct filter *f, int family)
1104 {
1105         struct tcpstat s;
1106         char *loc, *rem, *data;
1107         char opt[256];
1108         int n;
1109         char *p;
1110
1111         if ((p = strchr(line, ':')) == NULL)
1112                 return -1;
1113         loc = p+2;
1114
1115         if ((p = strchr(loc, ':')) == NULL)
1116                 return -1;
1117         p[5] = 0;
1118         rem = p+6;
1119
1120         if ((p = strchr(rem, ':')) == NULL)
1121                 return -1;
1122         p[5] = 0;
1123         data = p+6;
1124
1125         do {
1126                 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1127
1128                 if (!(f->states & (1<<state)))
1129                         return 0;
1130         } while (0);
1131
1132         s.local.family = s.remote.family = family;
1133         if (family == AF_INET) {
1134                 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1135                 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1136                 s.local.bytelen = s.remote.bytelen = 4;
1137         } else {
1138                 sscanf(loc, "%08x%08x%08x%08x:%x",
1139                        s.local.data,
1140                        s.local.data+1,
1141                        s.local.data+2,
1142                        s.local.data+3,
1143                        &s.lport);
1144                 sscanf(rem, "%08x%08x%08x%08x:%x",
1145                        s.remote.data,
1146                        s.remote.data+1,
1147                        s.remote.data+2,
1148                        s.remote.data+3,
1149                        &s.rport);
1150                 s.local.bytelen = s.remote.bytelen = 16;
1151         }
1152
1153         if (f->f && run_ssfilter(f->f, &s) == 0)
1154                 return 0;
1155
1156         opt[0] = 0;
1157         n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n",
1158                    &s.state, &s.wq, &s.rq,
1159                    &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1160                    &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1161                    &s.cwnd, &s.ssthresh, opt);
1162
1163         if (n < 17)
1164                 opt[0] = 0;
1165
1166         if (n < 12) {
1167                 s.rto = 0;
1168                 s.cwnd = 2;
1169                 s.ssthresh = -1;
1170                 s.ato = s.qack = 0;
1171         }
1172
1173         if (netid_width)
1174                 printf("%-*s ", netid_width, "tcp");
1175         if (state_width)
1176                 printf("%-*s ", state_width, sstate_name[s.state]);
1177
1178         printf("%-6d %-6d ", s.rq, s.wq);
1179
1180         formatted_print(&s.local, s.lport);
1181         formatted_print(&s.remote, s.rport);
1182
1183         if (show_options) {
1184                 if (s.timer) {
1185                         if (s.timer > 4)
1186                                 s.timer = 5;
1187                         printf(" timer:(%s,%s,%d)",
1188                                tmr_name[s.timer],
1189                                print_hz_timer(s.timeout),
1190                                s.timer != 1 ? s.probes : s.retrs);
1191                 }
1192         }
1193         if (show_tcpinfo) {
1194                 if (s.rto && s.rto != 3*get_hz())
1195                         printf(" rto:%g", (double)s.rto/get_hz());
1196                 if (s.ato)
1197                         printf(" ato:%g", (double)s.ato/get_hz());
1198                 if (s.cwnd != 2)
1199                         printf(" cwnd:%d", s.cwnd);
1200                 if (s.ssthresh != -1)
1201                         printf(" ssthresh:%d", s.ssthresh);
1202                 if (s.qack/2)
1203                         printf(" qack:%d", s.qack/2);
1204                 if (s.qack&1)
1205                         printf(" bidir");
1206         }
1207         if (show_users) {
1208                 char ubuf[4096];
1209                 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1210                         printf(" users:(%s)", ubuf);
1211         }
1212         if (show_details) {
1213                 if (s.uid)
1214                         printf(" uid:%u", (unsigned)s.uid);
1215                 printf(" ino:%u", s.ino);
1216                 printf(" sk:%llx", s.sk);
1217                 if (opt[0])
1218                         printf(" opt:\"%s\"", opt);
1219         }
1220         printf("\n");
1221
1222         return 0;
1223 }
1224
1225 static int generic_record_read(FILE *fp,
1226                                int (*worker)(char*, const struct filter *, int),
1227                                const struct filter *f, int fam)
1228 {
1229         char line[256];
1230
1231         /* skip header */
1232         if (fgets(line, sizeof(line), fp) == NULL)
1233                 goto outerr;
1234
1235         while (fgets(line, sizeof(line), fp) != NULL) {
1236                 int n = strlen(line);
1237                 if (n == 0 || line[n-1] != '\n') {
1238                         errno = -EINVAL;
1239                         return -1;
1240                 }
1241                 line[n-1] = 0;
1242
1243                 if (worker(line, f, fam) < 0)
1244                         return 0;
1245         }
1246 outerr:
1247
1248         return ferror(fp) ? -1 : 0;
1249 }
1250
1251 static char *sprint_bw(char *buf, double bw)
1252 {
1253         if (bw > 1000000.)
1254                 sprintf(buf,"%.1fM", bw / 1000000.);
1255         else if (bw > 1000.)
1256                 sprintf(buf,"%.1fK", bw / 1000.);
1257         else
1258                 sprintf(buf, "%g", bw);
1259
1260         return buf;
1261 }
1262
1263 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r)
1264 {
1265         struct rtattr * tb[INET_DIAG_MAX+1];
1266         char b1[64];
1267         double rtt = 0;
1268
1269         parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
1270                      nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1271
1272         if (tb[INET_DIAG_MEMINFO]) {
1273                 const struct inet_diag_meminfo *minfo
1274                         = RTA_DATA(tb[INET_DIAG_MEMINFO]);
1275                 printf(" mem:(r%u,w%u,f%u,t%u)",
1276                        minfo->idiag_rmem,
1277                        minfo->idiag_wmem,
1278                        minfo->idiag_fmem,
1279                        minfo->idiag_tmem);
1280         }
1281
1282         if (tb[INET_DIAG_INFO]) {
1283                 struct tcp_info *info;
1284                 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
1285
1286                 /* workaround for older kernels with less fields */
1287                 if (len < sizeof(*info)) {
1288                         info = alloca(sizeof(*info));
1289                         memset(info, 0, sizeof(*info));
1290                         memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
1291                 } else
1292                         info = RTA_DATA(tb[INET_DIAG_INFO]);
1293
1294                 if (show_options) {
1295                         if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1296                                 printf(" ts");
1297                         if (info->tcpi_options & TCPI_OPT_SACK)
1298                                 printf(" sack");
1299                         if (info->tcpi_options & TCPI_OPT_ECN)
1300                                 printf(" ecn");
1301                 }
1302
1303                 if (tb[INET_DIAG_CONG])
1304                         printf("%s", (char *) RTA_DATA(tb[INET_DIAG_CONG]));
1305
1306                 if (info->tcpi_options & TCPI_OPT_WSCALE)
1307                         printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1308                                info->tcpi_rcv_wscale);
1309                 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1310                         printf(" rto:%g", (double)info->tcpi_rto/1000);
1311                 if (info->tcpi_rtt)
1312                         printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1313                                (double)info->tcpi_rttvar/1000);
1314                 if (info->tcpi_ato)
1315                         printf(" ato:%g", (double)info->tcpi_ato/1000);
1316                 if (info->tcpi_snd_cwnd != 2)
1317                         printf(" cwnd:%d", info->tcpi_snd_cwnd);
1318                 if (info->tcpi_snd_ssthresh < 0xFFFF)
1319                         printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
1320
1321                 rtt = (double) info->tcpi_rtt;
1322                 if (tb[INET_DIAG_VEGASINFO]) {
1323                         const struct tcpvegas_info *vinfo
1324                                 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
1325
1326                         if (vinfo->tcpv_enabled &&
1327                             vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1328                                 rtt =  vinfo->tcpv_rtt;
1329                 }
1330
1331                 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1332                         printf(" send %sbps",
1333                                sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1334                                          (double) info->tcpi_snd_mss * 8000000.
1335                                          / rtt));
1336                 }
1337
1338                 if (info->tcpi_rcv_rtt)
1339                         printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1340                 if (info->tcpi_rcv_space)
1341                         printf(" rcv_space:%d", info->tcpi_rcv_space);
1342
1343         }
1344 }
1345
1346 static int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f)
1347 {
1348         struct inet_diag_msg *r = NLMSG_DATA(nlh);
1349         struct tcpstat s;
1350
1351         s.state = r->idiag_state;
1352         s.local.family = s.remote.family = r->idiag_family;
1353         s.lport = ntohs(r->id.idiag_sport);
1354         s.rport = ntohs(r->id.idiag_dport);
1355         if (s.local.family == AF_INET) {
1356                 s.local.bytelen = s.remote.bytelen = 4;
1357         } else {
1358                 s.local.bytelen = s.remote.bytelen = 16;
1359         }
1360         memcpy(s.local.data, r->id.idiag_src, s.local.bytelen);
1361         memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen);
1362
1363         if (f && f->f && run_ssfilter(f->f, &s) == 0)
1364                 return 0;
1365
1366         if (netid_width)
1367                 printf("%-*s ", netid_width, "tcp");
1368         if (state_width)
1369                 printf("%-*s ", state_width, sstate_name[s.state]);
1370
1371         printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue);
1372
1373         formatted_print(&s.local, s.lport);
1374         formatted_print(&s.remote, s.rport);
1375
1376         if (show_options) {
1377                 if (r->idiag_timer) {
1378                         if (r->idiag_timer > 4)
1379                                 r->idiag_timer = 5;
1380                         printf(" timer:(%s,%s,%d)",
1381                                tmr_name[r->idiag_timer],
1382                                print_ms_timer(r->idiag_expires),
1383                                r->idiag_retrans);
1384                 }
1385         }
1386         if (show_users) {
1387                 char ubuf[4096];
1388                 if (find_users(r->idiag_inode, ubuf, sizeof(ubuf)) > 0)
1389                         printf(" users:(%s)", ubuf);
1390         }
1391         if (show_details) {
1392                 if (r->idiag_uid)
1393                         printf(" uid:%u", (unsigned)r->idiag_uid);
1394                 printf(" ino:%u", r->idiag_inode);
1395                 printf(" sk:%08x", r->id.idiag_cookie[0]);
1396                 if (r->id.idiag_cookie[1] != 0)
1397                         printf("%08x", r->id.idiag_cookie[1]);
1398         }
1399         if (show_mem || show_tcpinfo) {
1400                 printf("\n\t");
1401                 tcp_show_info(nlh, r);
1402         }
1403
1404         printf("\n");
1405
1406         return 0;
1407 }
1408
1409 static int tcp_show_netlink(struct filter *f, FILE *dump_fp, int socktype)
1410 {
1411         int fd;
1412         struct sockaddr_nl nladdr;
1413         struct {
1414                 struct nlmsghdr nlh;
1415                 struct inet_diag_req r;
1416         } req;
1417         char    *bc = NULL;
1418         int     bclen;
1419         struct msghdr msg;
1420         struct rtattr rta;
1421         char    buf[8192];
1422         struct iovec iov[3];
1423
1424         if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
1425                 return -1;
1426
1427         memset(&nladdr, 0, sizeof(nladdr));
1428         nladdr.nl_family = AF_NETLINK;
1429
1430         req.nlh.nlmsg_len = sizeof(req);
1431         req.nlh.nlmsg_type = socktype;
1432         req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1433         req.nlh.nlmsg_pid = 0;
1434         req.nlh.nlmsg_seq = 123456;
1435         memset(&req.r, 0, sizeof(req.r));
1436         req.r.idiag_family = AF_INET;
1437         req.r.idiag_states = f->states;
1438         if (show_mem)
1439                 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
1440
1441         if (show_tcpinfo) {
1442                 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1443                 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1444                 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
1445         }
1446
1447         iov[0] = (struct iovec){
1448                 .iov_base = &req,
1449                 .iov_len = sizeof(req)
1450         };
1451         if (f->f) {
1452                 bclen = ssfilter_bytecompile(f->f, &bc);
1453                 rta.rta_type = INET_DIAG_REQ_BYTECODE;
1454                 rta.rta_len = RTA_LENGTH(bclen);
1455                 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1456                 iov[2] = (struct iovec){ bc, bclen };
1457                 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1458         }
1459
1460         msg = (struct msghdr) {
1461                 .msg_name = (void*)&nladdr,
1462                 .msg_namelen = sizeof(nladdr),
1463                 .msg_iov = iov,
1464                 .msg_iovlen = f->f ? 3 : 1,
1465         };
1466
1467         if (sendmsg(fd, &msg, 0) < 0)
1468                 return -1;
1469
1470         iov[0] = (struct iovec){
1471                 .iov_base = buf,
1472                 .iov_len = sizeof(buf)
1473         };
1474
1475         while (1) {
1476                 int status;
1477                 struct nlmsghdr *h;
1478
1479                 msg = (struct msghdr) {
1480                         (void*)&nladdr, sizeof(nladdr),
1481                         iov,    1,
1482                         NULL,   0,
1483                         0
1484                 };
1485
1486                 status = recvmsg(fd, &msg, 0);
1487
1488                 if (status < 0) {
1489                         if (errno == EINTR)
1490                                 continue;
1491                         perror("OVERRUN");
1492                         continue;
1493                 }
1494                 if (status == 0) {
1495                         fprintf(stderr, "EOF on netlink\n");
1496                         return 0;
1497                 }
1498
1499                 if (dump_fp)
1500                         fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1501
1502                 h = (struct nlmsghdr*)buf;
1503                 while (NLMSG_OK(h, status)) {
1504                         int err;
1505
1506                         if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1507                             h->nlmsg_seq != 123456)
1508                                 goto skip_it;
1509
1510                         if (h->nlmsg_type == NLMSG_DONE)
1511                                 return 0;
1512                         if (h->nlmsg_type == NLMSG_ERROR) {
1513                                 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1514                                 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1515                                         fprintf(stderr, "ERROR truncated\n");
1516                                 } else {
1517                                         errno = -err->error;
1518                                         perror("TCPDIAG answers");
1519                                 }
1520                                 return 0;
1521                         }
1522                         if (!dump_fp) {
1523                                 err = tcp_show_sock(h, NULL);
1524                                 if (err < 0)
1525                                         return err;
1526                         }
1527
1528 skip_it:
1529                         h = NLMSG_NEXT(h, status);
1530                 }
1531                 if (msg.msg_flags & MSG_TRUNC) {
1532                         fprintf(stderr, "Message truncated\n");
1533                         continue;
1534                 }
1535                 if (status) {
1536                         fprintf(stderr, "!!!Remnant of size %d\n", status);
1537                         exit(1);
1538                 }
1539         }
1540         return 0;
1541 }
1542
1543 static int tcp_show_netlink_file(struct filter *f)
1544 {
1545         FILE    *fp;
1546         char    buf[8192];
1547
1548         if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1549                 perror("fopen($TCPDIAG_FILE)");
1550                 return -1;
1551         }
1552
1553         while (1) {
1554                 int status, err;
1555                 struct nlmsghdr *h = (struct nlmsghdr*)buf;
1556
1557                 status = fread(buf, 1, sizeof(*h), fp);
1558                 if (status < 0) {
1559                         perror("Reading header from $TCPDIAG_FILE");
1560                         return -1;
1561                 }
1562                 if (status != sizeof(*h)) {
1563                         perror("Unexpected EOF reading $TCPDIAG_FILE");
1564                         return -1;
1565                 }
1566
1567                 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
1568
1569                 if (status < 0) {
1570                         perror("Reading $TCPDIAG_FILE");
1571                         return -1;
1572                 }
1573                 if (status + sizeof(*h) < h->nlmsg_len) {
1574                         perror("Unexpected EOF reading $TCPDIAG_FILE");
1575                         return -1;
1576                 }
1577
1578                 /* The only legal exit point */
1579                 if (h->nlmsg_type == NLMSG_DONE)
1580                         return 0;
1581
1582                 if (h->nlmsg_type == NLMSG_ERROR) {
1583                         struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1584                         if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1585                                 fprintf(stderr, "ERROR truncated\n");
1586                         } else {
1587                                 errno = -err->error;
1588                                 perror("TCPDIAG answered");
1589                         }
1590                         return -1;
1591                 }
1592
1593                 err = tcp_show_sock(h, f);
1594                 if (err < 0)
1595                         return err;
1596         }
1597 }
1598
1599 static int tcp_show(struct filter *f, int socktype)
1600 {
1601         FILE *fp = NULL;
1602         char *buf = NULL;
1603         int bufsize = 64*1024;
1604
1605         dg_proto = TCP_PROTO;
1606
1607         if (getenv("TCPDIAG_FILE"))
1608                 return tcp_show_netlink_file(f);
1609
1610         if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
1611             && tcp_show_netlink(f, NULL, socktype) == 0)
1612                 return 0;
1613
1614         /* Sigh... We have to parse /proc/net/tcp... */
1615
1616
1617         /* Estimate amount of sockets and try to allocate
1618          * huge buffer to read all the table at one read.
1619          * Limit it by 16MB though. The assumption is: as soon as
1620          * kernel was able to hold information about N connections,
1621          * it is able to give us some memory for snapshot.
1622          */
1623         if (1) {
1624                 int guess = slabstat.socks+slabstat.tcp_syns;
1625                 if (f->states&(1<<SS_TIME_WAIT))
1626                         guess += slabstat.tcp_tws;
1627                 if (guess > (16*1024*1024)/128)
1628                         guess = (16*1024*1024)/128;
1629                 guess *= 128;
1630                 if (guess > bufsize)
1631                         bufsize = guess;
1632         }
1633         while (bufsize >= 64*1024) {
1634                 if ((buf = malloc(bufsize)) != NULL)
1635                         break;
1636                 bufsize /= 2;
1637         }
1638         if (buf == NULL) {
1639                 errno = ENOMEM;
1640                 return -1;
1641         }
1642
1643         if (f->families & (1<<AF_INET)) {
1644                 if ((fp = net_tcp_open()) < 0)
1645                         goto outerr;
1646
1647                 setbuffer(fp, buf, bufsize);
1648                 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
1649                         goto outerr;
1650                 fclose(fp);
1651         }
1652
1653         if ((f->families & (1<<AF_INET6)) &&
1654             (fp = net_tcp6_open()) >= 0) {
1655                 setbuffer(fp, buf, bufsize);
1656                 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
1657                         goto outerr;
1658                 fclose(fp);
1659         }
1660
1661         free(buf);
1662         return 0;
1663
1664 outerr:
1665         do {
1666                 int saved_errno = errno;
1667                 if (buf)
1668                         free(buf);
1669                 if (fp)
1670                         fclose(fp);
1671                 errno = saved_errno;
1672                 return -1;
1673         } while (0);
1674 }
1675
1676
1677 int dgram_show_line(char *line, const struct filter *f, int family)
1678 {
1679         struct tcpstat s;
1680         char *loc, *rem, *data;
1681         char opt[256];
1682         int n;
1683         char *p;
1684
1685         if ((p = strchr(line, ':')) == NULL)
1686                 return -1;
1687         loc = p+2;
1688
1689         if ((p = strchr(loc, ':')) == NULL)
1690                 return -1;
1691         p[5] = 0;
1692         rem = p+6;
1693
1694         if ((p = strchr(rem, ':')) == NULL)
1695                 return -1;
1696         p[5] = 0;
1697         data = p+6;
1698
1699         do {
1700                 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1701
1702                 if (!(f->states & (1<<state)))
1703                         return 0;
1704         } while (0);
1705
1706         s.local.family = s.remote.family = family;
1707         if (family == AF_INET) {
1708                 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1709                 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1710                 s.local.bytelen = s.remote.bytelen = 4;
1711         } else {
1712                 sscanf(loc, "%08x%08x%08x%08x:%x",
1713                        s.local.data,
1714                        s.local.data+1,
1715                        s.local.data+2,
1716                        s.local.data+3,
1717                        &s.lport);
1718                 sscanf(rem, "%08x%08x%08x%08x:%x",
1719                        s.remote.data,
1720                        s.remote.data+1,
1721                        s.remote.data+2,
1722                        s.remote.data+3,
1723                        &s.rport);
1724                 s.local.bytelen = s.remote.bytelen = 16;
1725         }
1726
1727         if (f->f && run_ssfilter(f->f, &s) == 0)
1728                 return 0;
1729
1730         opt[0] = 0;
1731         n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
1732                &s.state, &s.wq, &s.rq,
1733                &s.uid, &s.ino,
1734                &s.refcnt, &s.sk, opt);
1735
1736         if (n < 9)
1737                 opt[0] = 0;
1738
1739         if (netid_width)
1740                 printf("%-*s ", netid_width, dg_proto);
1741         if (state_width)
1742                 printf("%-*s ", state_width, sstate_name[s.state]);
1743
1744         printf("%-6d %-6d ", s.rq, s.wq);
1745
1746         formatted_print(&s.local, s.lport);
1747         formatted_print(&s.remote, s.rport);
1748
1749         if (show_users) {
1750                 char ubuf[4096];
1751                 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1752                         printf(" users:(%s)", ubuf);
1753         }
1754
1755         if (show_details) {
1756                 if (s.uid)
1757                         printf(" uid=%u", (unsigned)s.uid);
1758                 printf(" ino=%u", s.ino);
1759                 printf(" sk=%llx", s.sk);
1760                 if (opt[0])
1761                         printf(" opt:\"%s\"", opt);
1762         }
1763         printf("\n");
1764
1765         return 0;
1766 }
1767
1768
1769 int udp_show(struct filter *f)
1770 {
1771         FILE *fp = NULL;
1772
1773         dg_proto = UDP_PROTO;
1774
1775         if (f->families&(1<<AF_INET)) {
1776                 if ((fp = net_udp_open()) < 0)
1777                         goto outerr;
1778                 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1779                         goto outerr;
1780                 fclose(fp);
1781         }
1782
1783         if ((f->families&(1<<AF_INET6)) &&
1784             (fp = net_udp6_open()) >= 0) {
1785                 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1786                         goto outerr;
1787                 fclose(fp);
1788         }
1789         return 0;
1790
1791 outerr:
1792         do {
1793                 int saved_errno = errno;
1794                 if (fp)
1795                         fclose(fp);
1796                 errno = saved_errno;
1797                 return -1;
1798         } while (0);
1799 }
1800
1801 int raw_show(struct filter *f)
1802 {
1803         FILE *fp = NULL;
1804
1805         dg_proto = RAW_PROTO;
1806
1807         if (f->families&(1<<AF_INET)) {
1808                 if ((fp = net_raw_open()) < 0)
1809                         goto outerr;
1810                 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1811                         goto outerr;
1812                 fclose(fp);
1813         }
1814
1815         if ((f->families&(1<<AF_INET6)) &&
1816             (fp = net_raw6_open()) >= 0) {
1817                 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1818                         goto outerr;
1819                 fclose(fp);
1820         }
1821         return 0;
1822
1823 outerr:
1824         do {
1825                 int saved_errno = errno;
1826                 if (fp)
1827                         fclose(fp);
1828                 errno = saved_errno;
1829                 return -1;
1830         } while (0);
1831 }
1832
1833
1834 struct unixstat
1835 {
1836         struct unixstat *next;
1837         int ino;
1838         int peer;
1839         int rq;
1840         int wq;
1841         int state;
1842         int type;
1843         char *name;
1844 };
1845
1846
1847
1848 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
1849                          SS_ESTABLISHED, SS_CLOSING };
1850
1851
1852 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
1853
1854 void unix_list_free(struct unixstat *list)
1855 {
1856         while (list) {
1857                 struct unixstat *s = list;
1858                 list = list->next;
1859                 if (s->name)
1860                         free(s->name);
1861                 free(s);
1862         }
1863 }
1864
1865 void unix_list_print(struct unixstat *list, struct filter *f)
1866 {
1867         struct unixstat *s;
1868         char *peer;
1869
1870         for (s = list; s; s = s->next) {
1871                 if (!(f->states & (1<<s->state)))
1872                         continue;
1873                 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
1874                         continue;
1875                 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
1876                         continue;
1877
1878                 peer = "*";
1879                 if (s->peer) {
1880                         struct unixstat *p;
1881                         for (p = list; p; p = p->next) {
1882                                 if (s->peer == p->ino)
1883                                         break;
1884                         }
1885                         if (!p) {
1886                                 peer = "?";
1887                         } else {
1888                                 peer = p->name ? : "*";
1889                         }
1890                 }
1891
1892                 if (f->f) {
1893                         struct tcpstat tst;
1894                         tst.local.family = AF_UNIX;
1895                         tst.remote.family = AF_UNIX;
1896                         memcpy(tst.local.data, &s->name, sizeof(s->name));
1897                         if (strcmp(peer, "*") == 0)
1898                                 memset(tst.remote.data, 0, sizeof(peer));
1899                         else
1900                                 memcpy(tst.remote.data, &peer, sizeof(peer));
1901                         if (run_ssfilter(f->f, &tst) == 0)
1902                                 continue;
1903                 }
1904
1905                 if (netid_width)
1906                         printf("%-*s ", netid_width,
1907                                s->type == SOCK_STREAM ? "u_str" : "u_dgr");
1908                 if (state_width)
1909                         printf("%-*s ", state_width, sstate_name[s->state]);
1910                 printf("%-6d %-6d ", s->rq, s->wq);
1911                 printf("%*s %-*d %*s %-*d",
1912                        addr_width, s->name ? : "*", serv_width, s->ino,
1913                        addr_width, peer, serv_width, s->peer);
1914                 if (show_users) {
1915                         char ubuf[4096];
1916                         if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0)
1917                                 printf(" users:(%s)", ubuf);
1918                 }
1919                 printf("\n");
1920         }
1921 }
1922
1923 int unix_show(struct filter *f)
1924 {
1925         FILE *fp;
1926         char buf[256];
1927         char name[128];
1928         int  newformat = 0;
1929         int  cnt;
1930         struct unixstat *list = NULL;
1931
1932         if ((fp = net_unix_open()) == NULL)
1933                 return -1;
1934         fgets(buf, sizeof(buf)-1, fp);
1935
1936         if (memcmp(buf, "Peer", 4) == 0)
1937                 newformat = 1;
1938         cnt = 0;
1939
1940         while (fgets(buf, sizeof(buf)-1, fp)) {
1941                 struct unixstat *u, **insp;
1942                 int flags;
1943
1944                 if (!(u = malloc(sizeof(*u))))
1945                         break;
1946                 u->name = NULL;
1947
1948                 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
1949                            &u->peer, &u->rq, &u->wq, &flags, &u->type,
1950                            &u->state, &u->ino, name) < 8)
1951                         name[0] = 0;
1952
1953                 if (flags&(1<<16)) {
1954                         u->state = SS_LISTEN;
1955                 } else {
1956                         u->state = unix_state_map[u->state-1];
1957                         if (u->type == SOCK_DGRAM &&
1958                             u->state == SS_CLOSE &&
1959                             u->peer)
1960                                 u->state = SS_ESTABLISHED;
1961                 }
1962
1963                 if (!newformat) {
1964                         u->peer = 0;
1965                         u->rq = 0;
1966                         u->wq = 0;
1967                 }
1968
1969                 insp = &list;
1970                 while (*insp) {
1971                         if (u->type < (*insp)->type ||
1972                             (u->type == (*insp)->type &&
1973                              u->ino < (*insp)->ino))
1974                                 break;
1975                         insp = &(*insp)->next;
1976                 }
1977                 u->next = *insp;
1978                 *insp = u;
1979
1980                 if (name[0]) {
1981                         if ((u->name = malloc(strlen(name)+1)) == NULL)
1982                                 break;
1983                         strcpy(u->name, name);
1984                 }
1985                 if (++cnt > MAX_UNIX_REMEMBER) {
1986                         unix_list_print(list, f);
1987                         unix_list_free(list);
1988                         list = NULL;
1989                         cnt = 0;
1990                 }
1991         }
1992
1993         if (list) {
1994                 unix_list_print(list, f);
1995                 unix_list_free(list);
1996                 list = NULL;
1997                 cnt = 0;
1998         }
1999
2000         return 0;
2001 }
2002
2003
2004 int packet_show(struct filter *f)
2005 {
2006         FILE *fp;
2007         char buf[256];
2008         int type;
2009         int prot;
2010         int iface;
2011         int state;
2012         int rq;
2013         int uid;
2014         int ino;
2015         unsigned long long sk;
2016
2017         if (!(f->states & (1<<SS_CLOSE)))
2018                 return 0;
2019
2020         if ((fp = net_packet_open()) == NULL)
2021                 return -1;
2022         fgets(buf, sizeof(buf)-1, fp);
2023
2024         while (fgets(buf, sizeof(buf)-1, fp)) {
2025                 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2026                        &sk,
2027                        &type, &prot, &iface, &state,
2028                        &rq, &uid, &ino);
2029
2030                 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2031                         continue;
2032                 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2033                         continue;
2034                 if (f->f) {
2035                         struct tcpstat tst;
2036                         tst.local.family = AF_PACKET;
2037                         tst.remote.family = AF_PACKET;
2038                         tst.rport = 0;
2039                         tst.lport = iface;
2040                         tst.local.data[0] = prot;
2041                         tst.remote.data[0] = 0;
2042                         if (run_ssfilter(f->f, &tst) == 0)
2043                                 continue;
2044                 }
2045
2046                 if (netid_width)
2047                         printf("%-*s ", netid_width,
2048                                type == SOCK_RAW ? "p_raw" : "p_dgr");
2049                 if (state_width)
2050                         printf("%-*s ", state_width, "UNCONN");
2051                 printf("%-6d %-6d ", rq, 0);
2052                 if (prot == 3) {
2053                         printf("%*s:", addr_width, "*");
2054                 } else {
2055                         char tb[16];
2056                         printf("%*s:", addr_width,
2057                                ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2058                 }
2059                 if (iface == 0) {
2060                         printf("%-*s ", serv_width, "*");
2061                 } else {
2062                         printf("%-*s ", serv_width, xll_index_to_name(iface));
2063                 }
2064                 printf("%*s*%-*s",
2065                        addr_width, "", serv_width, "");
2066
2067                 if (show_users) {
2068                         char ubuf[4096];
2069                         if (find_users(ino, ubuf, sizeof(ubuf)) > 0)
2070                                 printf(" users:(%s)", ubuf);
2071                 }
2072                 if (show_details) {
2073                         printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2074                 }
2075                 printf("\n");
2076         }
2077
2078         return 0;
2079 }
2080
2081 int netlink_show(struct filter *f)
2082 {
2083         FILE *fp;
2084         char buf[256];
2085         int prot, pid;
2086         unsigned groups;
2087         int rq, wq, rc;
2088         unsigned long long sk, cb;
2089
2090         if (!(f->states & (1<<SS_CLOSE)))
2091                 return 0;
2092
2093         if ((fp = net_netlink_open()) == NULL)
2094                 return -1;
2095         fgets(buf, sizeof(buf)-1, fp);
2096
2097         while (fgets(buf, sizeof(buf)-1, fp)) {
2098                 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
2099                        &sk,
2100                        &prot, &pid, &groups, &rq, &wq, &cb, &rc);
2101
2102                 if (f->f) {
2103                         struct tcpstat tst;
2104                         tst.local.family = AF_NETLINK;
2105                         tst.remote.family = AF_NETLINK;
2106                         tst.rport = -1;
2107                         tst.lport = pid;
2108                         tst.local.data[0] = prot;
2109                         tst.remote.data[0] = 0;
2110                         if (run_ssfilter(f->f, &tst) == 0)
2111                                 continue;
2112                 }
2113
2114                 if (netid_width)
2115                         printf("%-*s ", netid_width, "nl");
2116                 if (state_width)
2117                         printf("%-*s ", state_width, "UNCONN");
2118                 printf("%-6d %-6d ", rq, wq);
2119                 if (resolve_services && prot == 0)
2120                         printf("%*s:", addr_width, "rtnl");
2121                 else if (resolve_services && prot == 3)
2122                         printf("%*s:", addr_width, "fw");
2123                 else if (resolve_services && prot == 4)
2124                         printf("%*s:", addr_width, "tcpdiag");
2125                 else
2126                         printf("%*d:", addr_width, prot);
2127                 if (pid == -1) {
2128                         printf("%-*s ", serv_width, "*");
2129                 } else if (resolve_services) {
2130                         int done = 0;
2131                         if (!pid) {
2132                                 done = 1;
2133                                 printf("%-*s ", serv_width, "kernel");
2134                         } else if (pid > 0) {
2135                                 char procname[64];
2136                                 FILE *fp;
2137                                 sprintf(procname, "%s/%d/stat",
2138                                         getenv("PROC_ROOT") ? : "/proc", pid);
2139                                 if ((fp = fopen(procname, "r")) != NULL) {
2140                                         if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2141                                                 sprintf(procname+strlen(procname), "/%d", pid);
2142                                                 printf("%-*s ", serv_width, procname);
2143                                                 done = 1;
2144                                         }
2145                                         fclose(fp);
2146                                 }
2147                         }
2148                         if (!done)
2149                                 printf("%-*d ", serv_width, pid);
2150                 } else {
2151                         printf("%-*d ", serv_width, pid);
2152                 }
2153                 printf("%*s*%-*s",
2154                        addr_width, "", serv_width, "");
2155
2156                 if (show_details) {
2157                         printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
2158                 }
2159                 printf("\n");
2160         }
2161
2162         return 0;
2163 }
2164
2165 struct snmpstat
2166 {
2167         int tcp_estab;
2168 };
2169
2170 int get_snmp_int(char *proto, char *key, int *result)
2171 {
2172         char buf[1024];
2173         FILE *fp;
2174         int protolen = strlen(proto);
2175         int keylen = strlen(key);
2176
2177         *result = 0;
2178
2179         if ((fp = net_snmp_open()) == NULL)
2180                 return -1;
2181
2182         while (fgets(buf, sizeof(buf), fp) != NULL) {
2183                 char *p = buf;
2184                 int  pos = 0;
2185                 if (memcmp(buf, proto, protolen))
2186                         continue;
2187                 while ((p = strchr(p, ' ')) != NULL) {
2188                         pos++;
2189                         p++;
2190                         if (memcmp(p, key, keylen) == 0 &&
2191                             (p[keylen] == ' ' || p[keylen] == '\n'))
2192                                 break;
2193                 }
2194                 if (fgets(buf, sizeof(buf), fp) == NULL)
2195                         break;
2196                 if (memcmp(buf, proto, protolen))
2197                         break;
2198                 p = buf;
2199                 while ((p = strchr(p, ' ')) != NULL) {
2200                         p++;
2201                         if (--pos == 0) {
2202                                 sscanf(p, "%d", result);
2203                                 fclose(fp);
2204                                 return 0;
2205                         }
2206                 }
2207         }
2208
2209         fclose(fp);
2210         errno = ESRCH;
2211         return -1;
2212 }
2213
2214
2215 /* Get stats from sockstat */
2216
2217 struct sockstat
2218 {
2219         int socks;
2220         int tcp_mem;
2221         int tcp_total;
2222         int tcp_orphans;
2223         int tcp_tws;
2224         int tcp4_hashed;
2225         int udp4;
2226         int raw4;
2227         int frag4;
2228         int frag4_mem;
2229         int tcp6_hashed;
2230         int udp6;
2231         int raw6;
2232         int frag6;
2233         int frag6_mem;
2234 };
2235
2236 static void get_sockstat_line(char *line, struct sockstat *s)
2237 {
2238         char id[256], rem[256];
2239
2240         if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
2241                 return;
2242
2243         if (strcmp(id, "sockets:") == 0)
2244                 sscanf(rem, "%*s%d", &s->socks);
2245         else if (strcmp(id, "UDP:") == 0)
2246                 sscanf(rem, "%*s%d", &s->udp4);
2247         else if (strcmp(id, "UDP6:") == 0)
2248                 sscanf(rem, "%*s%d", &s->udp6);
2249         else if (strcmp(id, "RAW:") == 0)
2250                 sscanf(rem, "%*s%d", &s->raw4);
2251         else if (strcmp(id, "RAW6:") == 0)
2252                 sscanf(rem, "%*s%d", &s->raw6);
2253         else if (strcmp(id, "TCP6:") == 0)
2254                 sscanf(rem, "%*s%d", &s->tcp6_hashed);
2255         else if (strcmp(id, "FRAG:") == 0)
2256                 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
2257         else if (strcmp(id, "FRAG6:") == 0)
2258                 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
2259         else if (strcmp(id, "TCP:") == 0)
2260                 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
2261                        &s->tcp4_hashed,
2262                        &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
2263 }
2264
2265 int get_sockstat(struct sockstat *s)
2266 {
2267         char buf[256];
2268         FILE *fp;
2269
2270         memset(s, 0, sizeof(*s));
2271
2272         if ((fp = net_sockstat_open()) == NULL)
2273                 return -1;
2274         while(fgets(buf, sizeof(buf), fp) != NULL)
2275                 get_sockstat_line(buf, s);
2276         fclose(fp);
2277
2278         if ((fp = net_sockstat6_open()) == NULL)
2279                 return 0;
2280         while(fgets(buf, sizeof(buf), fp) != NULL)
2281                 get_sockstat_line(buf, s);
2282         fclose(fp);
2283
2284         return 0;
2285 }
2286
2287 int print_summary(void)
2288 {
2289         struct sockstat s;
2290         struct snmpstat sn;
2291
2292         if (get_sockstat(&s) < 0)
2293                 perror("ss: get_sockstat");
2294         if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
2295                 perror("ss: get_snmpstat");
2296
2297         printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
2298
2299         printf("TCP:   %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
2300                s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
2301                sn.tcp_estab,
2302                s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
2303                s.tcp_orphans,
2304                slabstat.tcp_syns,
2305                s.tcp_tws, slabstat.tcp_tws,
2306                slabstat.tcp_ports
2307                );
2308
2309         printf("\n");
2310         printf("Transport Total     IP        IPv6\n");
2311         printf("*         %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
2312         printf("RAW       %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
2313         printf("UDP       %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
2314         printf("TCP       %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
2315         printf("INET      %-9d %-9d %-9d\n",
2316                s.raw4+s.udp4+s.tcp4_hashed+
2317                s.raw6+s.udp6+s.tcp6_hashed,
2318                s.raw4+s.udp4+s.tcp4_hashed,
2319                s.raw6+s.udp6+s.tcp6_hashed);
2320         printf("FRAG      %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
2321
2322         printf("\n");
2323
2324         return 0;
2325 }
2326
2327
2328 static void usage(void) __attribute__((noreturn));
2329
2330 static void usage(void)
2331 {
2332         fprintf(stderr,
2333 "Usage: ss [ OPTIONS ]\n"
2334 "       ss [ OPTIONS ] [ FILTER ]\n"
2335 "   -h, --help          this message\n"
2336 "   -V, --version       output version information\n"
2337 "   -n, --numeric       don't resolve service names\n"
2338 "   -r, --resolve       resolve host names\n"
2339 "   -a, --all           display all sockets\n"
2340 "   -l, --listening     display listening sockets\n"
2341 "   -o, --options       show timer information\n"
2342 "   -e, --extended      show detailed socket information\n"
2343 "   -m, --memory        show socket memory usage\n"
2344 "   -p, --processes     show process using socket\n"
2345 "   -i, --info          show internal TCP information\n"
2346 "   -s, --summary       show socket usage summary\n"
2347 "\n"
2348 "   -4, --ipv4          display only IP version 4 sockets\n"
2349 "   -6, --ipv6          display only IP version 6 sockets\n"
2350 "   -0, --packet        display PACKET sockets\n"
2351 "   -t, --tcp           display only TCP sockets\n"
2352 "   -u, --udp           display only UDP sockets\n"
2353 "   -d, --dccp          display only DCCP sockets\n"
2354 "   -w, --raw           display only RAW sockets\n"
2355 "   -x, --unix          display only Unix domain sockets\n"
2356 "   -f, --family=FAMILY display sockets of type FAMILY\n"
2357 "\n"
2358 "   -A, --query=QUERY\n"
2359 "       QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
2360 "\n"
2361 "   -F, --filter=FILE   read filter information from FILE\n"
2362 "       FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
2363                 );
2364         exit(-1);
2365 }
2366
2367
2368 int scan_state(const char *state)
2369 {
2370         int i;
2371         if (strcasecmp(state, "close") == 0 ||
2372             strcasecmp(state, "closed") == 0)
2373                 return (1<<SS_CLOSE);
2374         if (strcasecmp(state, "syn-rcv") == 0)
2375                 return (1<<SS_SYN_RECV);
2376         if (strcasecmp(state, "established") == 0)
2377                 return (1<<SS_ESTABLISHED);
2378         if (strcasecmp(state, "all") == 0)
2379                 return SS_ALL;
2380         if (strcasecmp(state, "connected") == 0)
2381                 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
2382         if (strcasecmp(state, "synchronized") == 0)
2383                 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
2384         if (strcasecmp(state, "bucket") == 0)
2385                 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
2386         if (strcasecmp(state, "big") == 0)
2387                 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
2388         for (i=0; i<SS_MAX; i++) {
2389                 if (strcasecmp(state, sstate_namel[i]) == 0)
2390                         return (1<<i);
2391         }
2392         return 0;
2393 }
2394
2395 static const struct option long_opts[] = {
2396         { "numeric", 0, 0, 'n' },
2397         { "resolve", 0, 0, 'r' },
2398         { "options", 0, 0, 'o' },
2399         { "extended", 0, 0, 'e' },
2400         { "memory", 0, 0, 'm' },
2401         { "info", 0, 0, 'i' },
2402         { "processes", 0, 0, 'p' },
2403         { "dccp", 0, 0, 'd' },
2404         { "tcp", 0, 0, 't' },
2405         { "udp", 0, 0, 'u' },
2406         { "raw", 0, 0, 'w' },
2407         { "unix", 0, 0, 'x' },
2408         { "all", 0, 0, 'a' },
2409         { "listening", 0, 0, 'l' },
2410         { "ipv4", 0, 0, '4' },
2411         { "ipv6", 0, 0, '6' },
2412         { "packet", 0, 0, '0' },
2413         { "family", 1, 0, 'f' },
2414         { "socket", 1, 0, 'A' },
2415         { "summary", 0, 0, 's' },
2416         { "diag", 0, 0, 'D' },
2417         { "filter", 1, 0, 'F' },
2418         { "version", 0, 0, 'V' },
2419         { "help", 0, 0, 'h' },
2420         { 0 }
2421
2422 };
2423
2424 int main(int argc, char *argv[])
2425 {
2426         int do_default = 1;
2427         int saw_states = 0;
2428         int saw_query = 0;
2429         int do_summary = 0;
2430         const char *dump_tcpdiag = NULL;
2431         FILE *filter_fp = NULL;
2432         int ch;
2433
2434         memset(&current_filter, 0, sizeof(current_filter));
2435
2436         current_filter.states = default_filter.states;
2437
2438         while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spf:miA:D:F:vV",
2439                                  long_opts, NULL)) != EOF) {
2440                 switch(ch) {
2441                 case 'n':
2442                         resolve_services = 0;
2443                         break;
2444                 case 'r':
2445                         resolve_hosts = 1;
2446                         break;
2447                 case 'o':
2448                         show_options = 1;
2449                         break;
2450                 case 'e':
2451                         show_options = 1;
2452                         show_details++;
2453                         break;
2454                 case 'm':
2455                         show_mem = 1;
2456                         break;
2457                 case 'i':
2458                         show_tcpinfo = 1;
2459                         break;
2460                 case 'p':
2461                         show_users++;
2462                         break;
2463                 case 'd':
2464                         current_filter.dbs |= (1<<DCCP_DB);
2465                         do_default = 0;
2466                         break;
2467                 case 't':
2468                         current_filter.dbs |= (1<<TCP_DB);
2469                         do_default = 0;
2470                         break;
2471                 case 'u':
2472                         current_filter.dbs |= (1<<UDP_DB);
2473                         do_default = 0;
2474                         break;
2475                 case 'w':
2476                         current_filter.dbs |= (1<<RAW_DB);
2477                         do_default = 0;
2478                         break;
2479                 case 'x':
2480                         current_filter.dbs |= UNIX_DBM;
2481                         do_default = 0;
2482                         break;
2483                 case 'a':
2484                         current_filter.states = SS_ALL;
2485                         break;
2486                 case 'l':
2487                         current_filter.states = (1<<SS_LISTEN);
2488                         break;
2489                 case '4':
2490                         preferred_family = AF_INET;
2491                         break;
2492                 case '6':
2493                         preferred_family = AF_INET6;
2494                         break;
2495                 case '0':
2496                         preferred_family = AF_PACKET;
2497                         break;
2498                 case 'f':
2499                         if (strcmp(optarg, "inet") == 0)
2500                                 preferred_family = AF_INET;
2501                         else if (strcmp(optarg, "inet6") == 0)
2502                                 preferred_family = AF_INET6;
2503                         else if (strcmp(optarg, "link") == 0)
2504                                 preferred_family = AF_PACKET;
2505                         else if (strcmp(optarg, "unix") == 0)
2506                                 preferred_family = AF_UNIX;
2507                         else if (strcmp(optarg, "netlink") == 0)
2508                                 preferred_family = AF_NETLINK;
2509                         else if (strcmp(optarg, "help") == 0)
2510                                 usage();
2511                         else {
2512                                 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
2513                                 usage();
2514                         }
2515                         break;
2516                 case 'A':
2517                 {
2518                         char *p, *p1;
2519                         if (!saw_query) {
2520                                 current_filter.dbs = 0;
2521                                 saw_query = 1;
2522                                 do_default = 0;
2523                         }
2524                         p = p1 = optarg;
2525                         do {
2526                                 if ((p1 = strchr(p, ',')) != NULL)
2527                                         *p1 = 0;
2528                                 if (strcmp(p, "all") == 0) {
2529                                         current_filter.dbs = ALL_DB;
2530                                 } else if (strcmp(p, "inet") == 0) {
2531                                         current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
2532                                 } else if (strcmp(p, "udp") == 0) {
2533                                         current_filter.dbs |= (1<<UDP_DB);
2534                                 } else if (strcmp(p, "dccp") == 0) {
2535                                         current_filter.dbs |= (1<<DCCP_DB);
2536                                 } else if (strcmp(p, "tcp") == 0) {
2537                                         current_filter.dbs |= (1<<TCP_DB);
2538                                 } else if (strcmp(p, "raw") == 0) {
2539                                         current_filter.dbs |= (1<<RAW_DB);
2540                                 } else if (strcmp(p, "unix") == 0) {
2541                                         current_filter.dbs |= UNIX_DBM;
2542                                 } else if (strcasecmp(p, "unix_stream") == 0 ||
2543                                            strcmp(p, "u_str") == 0) {
2544                                         current_filter.dbs |= (1<<UNIX_ST_DB);
2545                                 } else if (strcasecmp(p, "unix_dgram") == 0 ||
2546                                            strcmp(p, "u_dgr") == 0) {
2547                                         current_filter.dbs |= (1<<UNIX_DG_DB);
2548                                 } else if (strcmp(p, "packet") == 0) {
2549                                         current_filter.dbs |= PACKET_DBM;
2550                                 } else if (strcmp(p, "packet_raw") == 0 ||
2551                                            strcmp(p, "p_raw") == 0) {
2552                                         current_filter.dbs |= (1<<PACKET_R_DB);
2553                                 } else if (strcmp(p, "packet_dgram") == 0 ||
2554                                            strcmp(p, "p_dgr") == 0) {
2555                                         current_filter.dbs |= (1<<PACKET_DG_DB);
2556                                 } else if (strcmp(p, "netlink") == 0) {
2557                                         current_filter.dbs |= (1<<NETLINK_DB);
2558                                 } else {
2559                                         fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
2560                                         usage();
2561                                 }
2562                                 p = p1 + 1;
2563                         } while (p1);
2564                         break;
2565                 }
2566                 case 's':
2567                         do_summary = 1;
2568                         break;
2569                 case 'D':
2570                         dump_tcpdiag = optarg;
2571                         break;
2572                 case 'F':
2573                         if (filter_fp) {
2574                                 fprintf(stderr, "More than one filter file\n");
2575                                 exit(-1);
2576                         }
2577                         if (optarg[0] == '-')
2578                                 filter_fp = stdin;
2579                         else
2580                                 filter_fp = fopen(optarg, "r");
2581                         if (!filter_fp) {
2582                                 perror("fopen filter file");
2583                                 exit(-1);
2584                         }
2585                         break;
2586                 case 'v':
2587                 case 'V':
2588                         printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
2589                         exit(0);
2590                 case 'h':
2591                 case '?':
2592                 default:
2593                         usage();
2594                 }
2595         }
2596
2597         argc -= optind;
2598         argv += optind;
2599
2600         get_slabstat(&slabstat);
2601
2602         if (do_summary) {
2603                 print_summary();
2604                 if (do_default && argc == 0)
2605                         exit(0);
2606         }
2607
2608         if (do_default)
2609                 current_filter.dbs = default_filter.dbs;
2610
2611         if (preferred_family == AF_UNSPEC) {
2612                 if (!(current_filter.dbs&~UNIX_DBM))
2613                         preferred_family = AF_UNIX;
2614                 else if (!(current_filter.dbs&~PACKET_DBM))
2615                         preferred_family = AF_PACKET;
2616                 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
2617                         preferred_family = AF_NETLINK;
2618         }
2619
2620         if (preferred_family != AF_UNSPEC) {
2621                 int mask2;
2622                 if (preferred_family == AF_INET ||
2623                     preferred_family == AF_INET6) {
2624                         mask2= (1<<TCP_DB);
2625                         if (!do_default)
2626                                 mask2 = (1<<UDP_DB)|(1<<RAW_DB);
2627                 } else if (preferred_family == AF_PACKET) {
2628                         mask2 = PACKET_DBM;
2629                 } else if (preferred_family == AF_UNIX) {
2630                         mask2 = UNIX_DBM;
2631                 } else if (preferred_family == AF_NETLINK) {
2632                         mask2 = (1<<NETLINK_DB);
2633                 } else {
2634                         mask2 = 0;
2635                 }
2636
2637                 if (do_default)
2638                         current_filter.dbs = mask2;
2639                 else
2640                         current_filter.dbs &= mask2;
2641                 current_filter.families = (1<<preferred_family);
2642         } else {
2643                 if (!do_default)
2644                         current_filter.families = ~0;
2645                 else
2646                         current_filter.families = default_filter.families;
2647         }
2648         if (current_filter.dbs == 0) {
2649                 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
2650                 exit(0);
2651         }
2652         if (current_filter.families == 0) {
2653                 fprintf(stderr, "ss: no families to show with such filter.\n");
2654                 exit(0);
2655         }
2656
2657         if (resolve_services && resolve_hosts &&
2658             (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB))))
2659                 init_service_resolver();
2660
2661         /* Now parse filter... */
2662         if (argc == 0 && filter_fp) {
2663                 if (ssfilter_parse(&current_filter.f, 0, NULL, filter_fp))
2664                         usage();
2665         }
2666
2667         while (argc > 0) {
2668                 if (strcmp(*argv, "state") == 0) {
2669                         NEXT_ARG();
2670                         if (!saw_states)
2671                                 current_filter.states = 0;
2672                         current_filter.states |= scan_state(*argv);
2673                         saw_states = 1;
2674                 } else if (strcmp(*argv, "exclude") == 0 ||
2675                            strcmp(*argv, "excl") == 0) {
2676                         NEXT_ARG();
2677                         if (!saw_states)
2678                                 current_filter.states = SS_ALL;
2679                         current_filter.states &= ~scan_state(*argv);
2680                         saw_states = 1;
2681                 } else {
2682                         if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
2683                                 usage();
2684                         break;
2685                 }
2686                 argc--; argv++;
2687         }
2688
2689         if (current_filter.states == 0) {
2690                 fprintf(stderr, "ss: no socket states to show with such filter.\n");
2691                 exit(0);
2692         }
2693
2694         if (dump_tcpdiag) {
2695                 FILE *dump_fp = stdout;
2696                 if (!(current_filter.dbs & (1<<TCP_DB))) {
2697                         fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
2698                         exit(0);
2699                 }
2700                 if (dump_tcpdiag[0] != '-') {
2701                         dump_fp = fopen(dump_tcpdiag, "w");
2702                         if (!dump_tcpdiag) {
2703                                 perror("fopen dump file");
2704                                 exit(-1);
2705                         }
2706                 }
2707                 tcp_show_netlink(&current_filter, dump_fp, TCPDIAG_GETSOCK);
2708                 fflush(dump_fp);
2709                 exit(0);
2710         }
2711
2712         netid_width = 0;
2713         if (current_filter.dbs&(current_filter.dbs-1))
2714                 netid_width = 5;
2715
2716         state_width = 0;
2717         if (current_filter.states&(current_filter.states-1))
2718                 state_width = 10;
2719
2720         screen_width = 80;
2721         if (isatty(STDOUT_FILENO)) {
2722                 struct winsize w;
2723
2724                 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
2725                         if (w.ws_col > 0)
2726                                 screen_width = w.ws_col;
2727                 }
2728         }
2729
2730         addrp_width = screen_width;
2731         addrp_width -= netid_width+1;
2732         addrp_width -= state_width+1;
2733         addrp_width -= 14;
2734
2735         if (addrp_width&1) {
2736                 if (netid_width)
2737                         netid_width++;
2738                 else if (state_width)
2739                         state_width++;
2740         }
2741
2742         addrp_width /= 2;
2743         addrp_width--;
2744
2745         serv_width = resolve_services ? 7 : 5;
2746
2747         if (addrp_width < 15+serv_width+1)
2748                 addrp_width = 15+serv_width+1;
2749
2750         addr_width = addrp_width - serv_width - 1;
2751
2752         if (netid_width)
2753                 printf("%-*s ", netid_width, "Netid");
2754         if (state_width)
2755                 printf("%-*s ", state_width, "State");
2756         printf("%-6s %-6s ", "Recv-Q", "Send-Q");
2757
2758         printf("%*s:%-*s %*s:%-*s\n",
2759                addr_width, "Local Address", serv_width, "Port",
2760                addr_width, "Peer Address", serv_width, "Port");
2761
2762         fflush(stdout);
2763
2764         if (current_filter.dbs & (1<<NETLINK_DB))
2765                 netlink_show(&current_filter);
2766         if (current_filter.dbs & PACKET_DBM)
2767                 packet_show(&current_filter);
2768         if (current_filter.dbs & UNIX_DBM)
2769                 unix_show(&current_filter);
2770         if (current_filter.dbs & (1<<RAW_DB))
2771                 raw_show(&current_filter);
2772         if (current_filter.dbs & (1<<UDP_DB))
2773                 udp_show(&current_filter);
2774         if (current_filter.dbs & (1<<TCP_DB))
2775                 tcp_show(&current_filter, TCPDIAG_GETSOCK);
2776         if (current_filter.dbs & (1<<DCCP_DB))
2777                 tcp_show(&current_filter, DCCPDIAG_GETSOCK);
2778         return 0;
2779 }