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 <linux/tcp.h>
  37 #include <linux/tcp_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         UDP_DB,
  64         RAW_DB,
  65         UNIX_DG_DB,
  66         UNIX_ST_DB,
  67         PACKET_DG_DB,
  68         PACKET_R_DB,
  69         NETLINK_DB,
  70         MAX_DB
  71 };
  72
  73 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
  74 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB))
  75 #define ALL_DB ((1<<MAX_DB)-1)
  76
  77 enum {
  78         SS_UNKNOWN,
  79         SS_ESTABLISHED,
  80         SS_SYN_SENT,
  81         SS_SYN_RECV,
  82         SS_FIN_WAIT1,
  83         SS_FIN_WAIT2,
  84         SS_TIME_WAIT,
  85         SS_CLOSE,
  86         SS_CLOSE_WAIT,
  87         SS_LAST_ACK,
  88         SS_LISTEN,
  89         SS_CLOSING,
  90         SS_MAX
  91 };
  92
  93 #define SS_ALL ((1<<SS_MAX)-1)
  94
  95 #include "ssfilter.h"
  96
  97 struct filter
  98 {
  99         int dbs;
 100         int states;
 101         int families;
 102         struct ssfilter *f;
 103 };
 104
 105 struct filter default_filter = {
 106         dbs: (1<<TCP_DB),
 107         states: SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
 108         families: (1<<AF_INET)|(1<<AF_INET6),
 109 };
 110
 111 struct filter current_filter;
 112
 113 int generic_proc_open(char *env, char *name)
 114 {
 115         char store[128];
 116         char *p = getenv(env);
 117         if (!p) {
 118                 p = getenv("PROC_ROOT") ? : "/proc";
 119                 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
 120                 p = store;
 121         }
 122         return open(store, O_RDONLY);
 123 }
 124
 125 int net_tcp_open(void)
 126 {
 127         return generic_proc_open("PROC_NET_TCP", "net/tcp");
 128 }
 129
 130 int net_tcp6_open(void)
 131 {
 132         return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
 133 }
 134
 135 int net_udp_open(void)
 136 {
 137         return generic_proc_open("PROC_NET_UDP", "net/udp");
 138 }
 139
 140 int net_udp6_open(void)
 141 {
 142         return generic_proc_open("PROC_NET_UDP6", "net/udp6");
 143 }
 144
 145 int net_raw_open(void)
 146 {
 147         return generic_proc_open("PROC_NET_RAW", "net/raw");
 148 }
 149
 150 int net_raw6_open(void)
 151 {
 152         return generic_proc_open("PROC_NET_RAW6", "net/raw6");
 153 }
 154
 155 int net_unix_open(void)
 156 {
 157         return generic_proc_open("PROC_NET_UNIX", "net/unix");
 158 }
 159
 160 int net_packet_open(void)
 161 {
 162         return generic_proc_open("PROC_NET_PACKET", "net/packet");
 163 }
 164
 165 int net_netlink_open(void)
 166 {
 167         return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
 168 }
 169
 170 int slabinfo_open(void)
 171 {
 172         return generic_proc_open("PROC_SLABINFO", "slabinfo");
 173 }
 174
 175 int net_sockstat_open(void)
 176 {
 177         return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
 178 }
 179
 180 int net_sockstat6_open(void)
 181 {
 182         return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
 183 }
 184
 185 int net_snmp_open(void)
 186 {
 187         return generic_proc_open("PROC_NET_SNMP", "net/snmp");
 188 }
 189
 190 int net_netstat_open(void)
 191 {
 192         return generic_proc_open("PROC_NET_NETSTAT", "net/netstat");
 193 }
 194
 195 int ephemeral_ports_open(void)
 196 {
 197         return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
 198 }
 199
 200 int find_users(int ino, char *buf, int buflen)
 201 {
 202         char pattern[64];
 203         int  pattern_len;
 204         char *ptr = buf;
 205         char name[1024];
 206         DIR *dir;
 207         struct dirent *d;
 208         int cnt = 0;
 209         int nameoff;
 210
 211         if (!ino)
 212                 return 0;
 213
 214         sprintf(pattern, "socket:[%d]", ino);
 215         pattern_len = strlen(pattern);
 216
 217         strncpy(name, getenv("PROC_ROOT") ? : "/proc/", sizeof(name)/2);
 218         name[sizeof(name)/2] = 0;
 219         if (strlen(name) == 0 ||
 220             name[strlen(name)-1] != '/')
 221                 strcat(name, "/");
 222         nameoff = strlen(name);
 223         if ((dir = opendir(name)) == NULL)
 224                 return 0;
 225
 226         while ((d = readdir(dir)) != NULL) {
 227                 DIR *dir1;
 228                 struct dirent *d1;
 229                 int pid;
 230                 int pos;
 231                 char crap;
 232                 char process[16];
 233
 234                 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
 235                         continue;
 236
 237                 sprintf(name+nameoff, "%d/fd/", pid);
 238                 pos = strlen(name);
 239                 if ((dir1 = opendir(name)) == NULL)
 240                         continue;
 241
 242                 process[0] = 0;
 243
 244                 while ((d1 = readdir(dir1)) != NULL) {
 245                         int fd, n;
 246                         char lnk[64];
 247
 248                         if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
 249                                 continue;
 250
 251                         sprintf(name+pos, "%d", fd);
 252                         n = readlink(name, lnk, sizeof(lnk)-1);
 253                         if (n != pattern_len ||
 254                             memcmp(lnk, pattern, n))
 255                                 continue;
 256
 257                         if (ptr-buf >= buflen-1)
 258                                 break;
 259
 260                         if (process[0] == 0) {
 261                                 char tmp[1024];
 262                                 FILE *fp;
 263                                 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
 264                                          getenv("PROC_ROOT") ? : "/proc", pid);
 265                                 if ((fp = fopen(tmp, "r")) != NULL) {
 266                                         fscanf(fp, "%*d (%[^)])", process);
 267                                         fclose(fp);
 268                                 }
 269                         }
 270
 271                         snprintf(ptr, buflen-(ptr-buf), "(\"%s\",%d,%d),", process, pid, fd);
 272                         ptr += strlen(ptr);
 273                         cnt++;
 274                 }
 275                 closedir(dir1);
 276         }
 277         closedir(dir);
 278         if (ptr != buf)
 279                 ptr[-1] = 0;
 280         return cnt;
 281 }
 282
 283
 284 /* Get stats from slab */
 285
 286 struct slabstat
 287 {
 288         int socks;
 289         int tcp_ports;
 290         int tcp_tws;
 291         int tcp_syns;
 292         int skbs;
 293 };
 294
 295 struct slabstat slabstat;
 296
 297 static const char *slabstat_ids[] =
 298 {
 299         "sock",
 300         "tcp_bind_bucket",
 301         "tcp_tw_bucket",
 302         "tcp_open_request",
 303         "skbuff_head_cache",
 304 };
 305
 306 int get_slabstat(struct slabstat *s)
 307 {
 308         char buf[256];
 309         FILE *fp;
 310         int cnt;
 311
 312         memset(s, 0, sizeof(*s));
 313
 314         if ((fp = fdopen(slabinfo_open(), "r")) == NULL)
 315                 return -1;
 316
 317         cnt = sizeof(*s)/sizeof(int);
 318
 319         fgets(buf, sizeof(buf), fp);
 320         while(fgets(buf, sizeof(buf), fp) != NULL) {
 321                 int i;
 322                 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
 323                         if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
 324                                 sscanf(buf, "%*s%d", ((int *)s) + i);
 325                                 cnt--;
 326                                 break;
 327                         }
 328                 }
 329                 if (cnt <= 0)
 330                         break;
 331         }
 332
 333         fclose(fp);
 334         return 0;
 335 }
 336
 337 static const char *sstate_name[] = {
 338         "UNKNOWN",
 339         [TCP_ESTABLISHED] = "ESTAB",
 340         [TCP_SYN_SENT] = "SYN-SENT",
 341         [TCP_SYN_RECV] = "SYN-RECV",
 342         [TCP_FIN_WAIT1] = "FIN-WAIT-1",
 343         [TCP_FIN_WAIT2] = "FIN-WAIT-2",
 344         [TCP_TIME_WAIT] = "TIME-WAIT",
 345         [TCP_CLOSE] = "UNCONN",
 346         [TCP_CLOSE_WAIT] = "CLOSE-WAIT",
 347         [TCP_LAST_ACK] = "LAST-ACK",
 348         [TCP_LISTEN] =  "LISTEN",
 349         [TCP_CLOSING] = "CLOSING",
 350 };
 351
 352 static const char *sstate_namel[] = {
 353         "UNKNOWN",
 354         [TCP_ESTABLISHED] = "established",
 355         [TCP_SYN_SENT] = "syn-sent",
 356         [TCP_SYN_RECV] = "syn-recv",
 357         [TCP_FIN_WAIT1] = "fin-wait-1",
 358         [TCP_FIN_WAIT2] = "fin-wait-2",
 359         [TCP_TIME_WAIT] = "time-wait",
 360         [TCP_CLOSE] = "unconnected",
 361         [TCP_CLOSE_WAIT] = "close-wait",
 362         [TCP_LAST_ACK] = "last-ack",
 363         [TCP_LISTEN] =  "listening",
 364         [TCP_CLOSING] = "closing",
 365 };
 366
 367 struct tcpstat
 368 {
 369         inet_prefix     local;
 370         inet_prefix     remote;
 371         int             lport;
 372         int             rport;
 373         int             state;
 374         int             rq, wq;
 375         int             timer;
 376         int             timeout;
 377         int             retrs;
 378         int             ino;
 379         int             probes;
 380         int             uid;
 381         int             refcnt;
 382         unsigned long long sk;
 383         int             rto, ato, qack, cwnd, ssthresh;
 384 };
 385
 386 static const char *tmr_name[] = {
 387         "off",
 388         "on",
 389         "keepalive",
 390         "timewait",
 391         "persist",
 392         "unknown"
 393 };
 394
 395 const char *print_ms_timer(int timeout)
 396 {
 397         static char buf[64];
 398         int secs, msecs, minutes;
 399         if (timeout < 0)
 400                 timeout = 0;
 401         secs = timeout/1000;
 402         minutes = secs/60;
 403         secs = secs%60;
 404         msecs = timeout%1000;
 405         buf[0] = 0;
 406         if (minutes) {
 407                 msecs = 0;
 408                 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
 409                 if (minutes > 9)
 410                         secs = 0;
 411         }
 412         if (secs) {
 413                 if (secs > 9)
 414                         msecs = 0;
 415                 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
 416         }
 417         if (msecs)
 418                 sprintf(buf+strlen(buf), "%03dms", msecs);
 419         return buf;
 420 };
 421
 422 const char *print_hz_timer(int timeout)
 423 {
 424         int hz = get_hz();
 425         return print_ms_timer(((timeout*1000) + hz-1)/hz);
 426 };
 427
 428 struct scache
 429 {
 430         struct scache *next;
 431         int port;
 432         char *name;
 433         const char *proto;
 434 };
 435
 436 struct scache *rlist;
 437
 438 void init_service_resolver(void)
 439 {
 440         char buf[128];
 441         FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
 442         if (fp) {
 443                 fgets(buf, sizeof(buf), fp);
 444                 while (fgets(buf, sizeof(buf), fp) != NULL) {
 445                         unsigned int progn, port;
 446                         char proto[128], prog[128];
 447                         if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
 448                                    &port, prog+4) == 4) {
 449                                 struct scache *c = malloc(sizeof(*c));
 450                                 if (c) {
 451                                         c->port = port;
 452                                         memcpy(prog, "rpc.", 4);
 453                                         c->name = strdup(prog);
 454                                         if (strcmp(proto, TCP_PROTO) == 0)
 455                                                 c->proto = TCP_PROTO;
 456                                         else if (strcmp(proto, UDP_PROTO) == 0)
 457                                                 c->proto = UDP_PROTO;
 458                                         else
 459                                                 c->proto = NULL;
 460                                         c->next = rlist;
 461                                         rlist = c;
 462                                 }
 463                         }
 464                 }
 465         }
 466 }
 467
 468 static int ip_local_port_min, ip_local_port_max;
 469
 470 /* Even do not try default linux ephemeral port ranges:
 471  * default /etc/services contains so much of useless crap
 472  * wouldbe "allocated" to this area that resolution
 473  * is really harmful. I shrug each time when seeing
 474  * "socks" or "cfinger" in dumps.
 475  */
 476 static int is_ephemeral(int port)
 477 {
 478         if (!ip_local_port_min) {
 479                 FILE *f = fdopen(ephemeral_ports_open(), "r");
 480                 if (f) {
 481                         fscanf(f, "%d %d",
 482                                &ip_local_port_min, &ip_local_port_max);
 483                         fclose(f);
 484                 } else {
 485                         ip_local_port_min = 1024;
 486                         ip_local_port_max = 4999;
 487                 }
 488         }
 489
 490         return (port >= ip_local_port_min && port<= ip_local_port_max);
 491 }
 492
 493
 494 const char *__resolve_service(int port)
 495 {
 496         struct scache *c;
 497
 498         for (c = rlist; c; c = c->next) {
 499                 if (c->port == port && c->proto == dg_proto)
 500                         return c->name;
 501         }
 502
 503         if (!is_ephemeral(port)) {
 504                 static int notfirst;
 505                 struct servent *se;
 506                 if (!notfirst) {
 507                         setservent(1);
 508                         notfirst = 1;
 509                 }
 510                 se = getservbyport(htons(port), dg_proto);
 511                 if (se)
 512                         return se->s_name;
 513         }
 514
 515         return NULL;
 516 }
 517
 518
 519 const char *resolve_service(int port)
 520 {
 521         static char buf[128];
 522         static struct scache cache[256];
 523
 524         if (port == 0) {
 525                 buf[0] = '*';
 526                 buf[1] = 0;
 527                 return buf;
 528         }
 529
 530         if (resolve_services) {
 531                 if (dg_proto == RAW_PROTO) {
 532                         return inet_proto_n2a(port, buf, sizeof(buf));
 533                 } else {
 534                         struct scache *c;
 535                         const char *res;
 536                         int hash = (port^(((unsigned long)dg_proto)>>2))&255;
 537
 538                         for (c = &cache[hash]; c; c = c->next) {
 539                                 if (c->port == port &&
 540                                     c->proto == dg_proto) {
 541                                         if (c->name)
 542                                                 return c->name;
 543                                         goto do_numeric;
 544                                 }
 545                         }
 546
 547                         if ((res = __resolve_service(port)) != NULL) {
 548                                 if ((c = malloc(sizeof(*c))) == NULL)
 549                                         goto do_numeric;
 550                         } else {
 551                                 c = &cache[hash];
 552                                 if (c->name)
 553                                         free(c->name);
 554                         }
 555                         c->port = port;
 556                         c->name = NULL;
 557                         c->proto = dg_proto;
 558                         if (res) {
 559                                 c->name = strdup(res);
 560                                 c->next = cache[hash].next;
 561                                 cache[hash].next = c;
 562                         }
 563                         if (c->name)
 564                                 return c->name;
 565                 }
 566         }
 567
 568         do_numeric:
 569         sprintf(buf, "%u", port);
 570         return buf;
 571 }
 572
 573 void formatted_print(const inet_prefix *a, int port)
 574 {
 575         char buf[1024];
 576         const char *ap = buf;
 577         int est_len;
 578
 579         est_len = addr_width;
 580
 581         if (a->family == AF_INET) {
 582                 if (a->data[0] == 0) {
 583                         buf[0] = '*';
 584                         buf[1] = 0;
 585                 } else {
 586                         ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
 587                 }
 588         } else {
 589                 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
 590                 est_len = strlen(ap);
 591                 if (est_len <= addr_width)
 592                         est_len = addr_width;
 593                 else
 594                         est_len = addr_width + ((est_len-addr_width+3)/4)*4;
 595         }
 596         printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
 597 }
 598
 599 struct aafilter
 600 {
 601         inet_prefix     addr;
 602         int             port;
 603         struct aafilter *next;
 604 };
 605
 606 int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, int plen)
 607 {
 608         if (!inet_addr_match(a, p, plen))
 609                 return 0;
 610
 611         /* Cursed "v4 mapped" addresses: v4 mapped socket matches
 612          * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
 613          * sockets. Fair? */
 614         if (p->family == AF_INET && a->family == AF_INET6) {
 615                 if (a->data[0] == 0 && a->data[1] == 0 &&
 616                     a->data[2] == htonl(0xffff)) {
 617                         inet_prefix tmp = *a;
 618                         tmp.data[0] = a->data[3];
 619                         return inet_addr_match(&tmp, p, plen);
 620                 }
 621         }
 622         return 1;
 623 }
 624
 625 int unix_match(const inet_prefix *a, const inet_prefix *p)
 626 {
 627         char *addr, *pattern;
 628         memcpy(&addr, a->data, sizeof(addr));
 629         memcpy(&pattern, p->data, sizeof(pattern));
 630         if (pattern == NULL)
 631                 return 1;
 632         if (addr == NULL)
 633                 addr = "";
 634         return !fnmatch(pattern, addr, 0);
 635 }
 636
 637 int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
 638 {
 639         switch (f->type) {
 640                 case SSF_S_AUTO:
 641         {
 642                 static int low, high=65535;
 643
 644                 if (s->local.family == AF_UNIX) {
 645                         char *p;
 646                         memcpy(&p, s->local.data, sizeof(p));
 647                         return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
 648                                              strspn(p+1, "0123456789abcdef") == 5);
 649                 }
 650                 if (s->local.family == AF_PACKET)
 651                         return s->lport == 0 && s->local.data == 0;
 652                 if (s->local.family == AF_NETLINK)
 653                         return s->lport < 0;
 654
 655                 if (!low) {
 656                         FILE *fp = fdopen(ephemeral_ports_open(), "r");
 657                         if (fp) {
 658                                 fscanf(fp, "%d%d", &low, &high);
 659                                 fclose(fp);
 660                         }
 661                 }
 662                 return s->lport >= low && s->lport <= high;
 663         }
 664                 case SSF_DCOND:
 665         {
 666                 struct aafilter *a = (void*)f->pred;
 667                 if (a->addr.family == AF_UNIX)
 668                         return unix_match(&s->remote, &a->addr);
 669                 if (a->port != -1 && a->port != s->rport)
 670                         return 0;
 671                 if (a->addr.bitlen) {
 672                         do {
 673                                 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
 674                                         return 1;
 675                         } while ((a = a->next) != NULL);
 676                         return 0;
 677                 }
 678                 return 1;
 679         }
 680                 case SSF_SCOND:
 681         {
 682                 struct aafilter *a = (void*)f->pred;
 683                 if (a->addr.family == AF_UNIX)
 684                         return unix_match(&s->local, &a->addr);
 685                 if (a->port != -1 && a->port != s->lport)
 686                         return 0;
 687                 if (a->addr.bitlen) {
 688                         do {
 689                                 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
 690                                         return 1;
 691                         } while ((a = a->next) != NULL);
 692                         return 0;
 693                 }
 694                 return 1;
 695         }
 696                 case SSF_D_GE:
 697         {
 698                 struct aafilter *a = (void*)f->pred;
 699                 return s->rport >= a->port;
 700         }
 701                 case SSF_D_LE:
 702         {
 703                 struct aafilter *a = (void*)f->pred;
 704                 return s->rport <= a->port;
 705         }
 706                 case SSF_S_GE:
 707         {
 708                 struct aafilter *a = (void*)f->pred;
 709                 return s->lport >= a->port;
 710         }
 711                 case SSF_S_LE:
 712         {
 713                 struct aafilter *a = (void*)f->pred;
 714                 return s->lport <= a->port;
 715         }
 716
 717                 /* Yup. It is recursion. Sorry. */
 718                 case SSF_AND:
 719                 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
 720                 case SSF_OR:
 721                 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
 722                 case SSF_NOT:
 723                 return !run_ssfilter(f->pred, s);
 724                 default:
 725                 abort();
 726         }
 727 }
 728
 729 /* Relocate external jumps by reloc. */
 730 static void ssfilter_patch(char *a, int len, int reloc)
 731 {
 732         while (len > 0) {
 733                 struct tcpdiag_bc_op *op = (struct tcpdiag_bc_op*)a;
 734                 if (op->no == len+4)
 735                         op->no += reloc;
 736                 len -= op->yes;
 737                 a += op->yes;
 738         }
 739         if (len < 0)
 740                 abort();
 741 }
 742
 743 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
 744 {
 745         switch (f->type) {
 746                 case SSF_S_AUTO:
 747         {
 748                 if (!(*bytecode=malloc(4))) abort();
 749                 ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_AUTO, 4, 8 };
 750                 return 8;
 751         }
 752                 case SSF_DCOND:
 753                 case SSF_SCOND:
 754         {
 755                 struct aafilter *a = (void*)f->pred;
 756                 struct aafilter *b;
 757                 char *ptr;
 758                 int  code = (f->type == SSF_DCOND ? TCPDIAG_BC_D_COND : TCPDIAG_BC_S_COND);
 759                 int len = 0;
 760
 761                 for (b=a; b; b=b->next) {
 762                         len += 4 + sizeof(struct tcpdiag_hostcond);
 763                         if (a->addr.family == AF_INET6)
 764                                 len += 16;
 765                         else
 766                                 len += 4;
 767                         if (b->next)
 768                                 len += 4;
 769                 }
 770                 if (!(ptr = malloc(len))) abort();
 771                 *bytecode = ptr;
 772                 for (b=a; b; b=b->next) {
 773                         struct tcpdiag_bc_op *op = (struct tcpdiag_bc_op *)ptr;
 774                         int alen = (a->addr.family == AF_INET6 ? 16 : 4);
 775                         int oplen = alen + 4 + sizeof(struct tcpdiag_hostcond);
 776                         struct tcpdiag_hostcond *cond = (struct tcpdiag_hostcond*)(ptr+4);
 777
 778                         *op = (struct tcpdiag_bc_op){ code, oplen, oplen+4 };
 779                         cond->family = a->addr.family;
 780                         cond->port = a->port;
 781                         cond->prefix_len = a->addr.bitlen;
 782                         memcpy(cond->addr, a->addr.data, alen);
 783                         ptr += oplen;
 784                         if (b->next) {
 785                                 op = (struct tcpdiag_bc_op *)ptr;
 786                                 *op = (struct tcpdiag_bc_op){ TCPDIAG_BC_JMP, 4, len - (ptr-*bytecode)};
 787                                 ptr += 4;
 788                         }
 789                 }
 790                 return ptr - *bytecode;
 791         }
 792                 case SSF_D_GE:
 793         {
 794                 struct aafilter *x = (void*)f->pred;
 795                 if (!(*bytecode=malloc(8))) abort();
 796                 ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_D_GE, 8, 12 };
 797                 ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
 798                 return 8;
 799         }
 800                 case SSF_D_LE:
 801         {
 802                 struct aafilter *x = (void*)f->pred;
 803                 if (!(*bytecode=malloc(8))) abort();
 804                 ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_D_LE, 8, 12 };
 805                 ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
 806                 return 8;
 807         }
 808                 case SSF_S_GE:
 809         {
 810                 struct aafilter *x = (void*)f->pred;
 811                 if (!(*bytecode=malloc(8))) abort();
 812                 ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_S_GE, 8, 12 };
 813                 ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
 814                 return 8;
 815         }
 816                 case SSF_S_LE:
 817         {
 818                 struct aafilter *x = (void*)f->pred;
 819                 if (!(*bytecode=malloc(8))) abort();
 820                 ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_S_LE, 8, 12 };
 821                 ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
 822                 return 8;
 823         }
 824
 825                 case SSF_AND:
 826         {
 827                 char *a1, *a2, *a, l1, l2;
 828                 l1 = ssfilter_bytecompile(f->pred, &a1);
 829                 l2 = ssfilter_bytecompile(f->post, &a2);
 830                 if (!(a = malloc(l1+l2))) abort();
 831                 memcpy(a, a1, l1);
 832                 memcpy(a+l1, a2, l2);
 833                 free(a1); free(a2);
 834                 ssfilter_patch(a, l1, l2);
 835                 *bytecode = a;
 836                 return l1+l2;
 837         }
 838                 case SSF_OR:
 839         {
 840                 char *a1, *a2, *a, l1, l2;
 841                 l1 = ssfilter_bytecompile(f->pred, &a1);
 842                 l2 = ssfilter_bytecompile(f->post, &a2);
 843                 if (!(a = malloc(l1+l2+4))) abort();
 844                 memcpy(a, a1, l1);
 845                 memcpy(a+l1+4, a2, l2);
 846                 free(a1); free(a2);
 847                 *(struct tcpdiag_bc_op*)(a+l1) = (struct tcpdiag_bc_op){ TCPDIAG_BC_JMP, 4, l2+4 };
 848                 *bytecode = a;
 849                 return l1+l2+4;
 850         }
 851                 case SSF_NOT:
 852         {
 853                 char *a1, *a, l1;
 854                 l1 = ssfilter_bytecompile(f->pred, &a1);
 855                 if (!(a = malloc(l1+4))) abort();
 856                 memcpy(a, a1, l1);
 857                 free(a1);
 858                 *(struct tcpdiag_bc_op*)(a+l1) = (struct tcpdiag_bc_op){ TCPDIAG_BC_JMP, 4, 8 };
 859                 *bytecode = a;
 860                 return l1+4;
 861         }
 862                 default:
 863                 abort();
 864         }
 865 }
 866
 867 static int remember_he(struct aafilter *a, struct hostent *he)
 868 {
 869         char **ptr = he->h_addr_list;
 870         int cnt = 0;
 871         int len;
 872
 873         if (he->h_addrtype == AF_INET)
 874                 len = 4;
 875         else if (he->h_addrtype == AF_INET6)
 876                 len = 16;
 877         else
 878                 return 0;
 879
 880         while (*ptr) {
 881                 struct aafilter *b = a;
 882                 if (a->addr.bitlen) {
 883                         if ((b = malloc(sizeof(*b))) == NULL)
 884                                 return cnt;
 885                         *b = *a;
 886                         b->next = a->next;
 887                         a->next = b;
 888                 }
 889                 memcpy(b->addr.data, *ptr, len);
 890                 b->addr.bytelen = len;
 891                 b->addr.bitlen = len*8;
 892                 b->addr.family = he->h_addrtype;
 893                 ptr++;
 894                 cnt++;
 895         }
 896         return cnt;
 897 }
 898
 899 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
 900 {
 901         static int notfirst;
 902         int cnt = 0;
 903         struct hostent *he;
 904
 905         a->addr.bitlen = 0;
 906         if (!notfirst) {
 907                 sethostent(1);
 908                 notfirst = 1;
 909         }
 910         he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
 911         if (he)
 912                 cnt = remember_he(a, he);
 913         if (fam == AF_UNSPEC) {
 914                 he = gethostbyname2(addr, AF_INET6);
 915                 if (he)
 916                         cnt += remember_he(a, he);
 917         }
 918         return !cnt;
 919 }
 920
 921 static int xll_initted = 0;
 922
 923 static void xll_init(void)
 924 {
 925         struct rtnl_handle rth;
 926         rtnl_open(&rth, 0);
 927         ll_init_map(&rth);
 928         rtnl_close(&rth);
 929         xll_initted = 1;
 930 }
 931
 932 static const char *xll_index_to_name(int index)
 933 {
 934         if (!xll_initted)
 935                 xll_init();
 936         return ll_index_to_name(index);
 937 }
 938
 939 static int xll_name_to_index(const char *dev)
 940 {
 941         if (!xll_initted)
 942                 xll_init();
 943         return ll_name_to_index(dev);
 944 }
 945
 946 void *parse_hostcond(char *addr)
 947 {
 948         char *port = NULL;
 949         struct aafilter a;
 950         struct aafilter *res;
 951         int fam = preferred_family;
 952
 953         memset(&a, 0, sizeof(a));
 954         a.port = -1;
 955
 956         if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
 957                 char *p;
 958                 a.addr.family = AF_UNIX;
 959                 if (strncmp(addr, "unix:", 5) == 0)
 960                         addr+=5;
 961                 p = strdup(addr);
 962                 a.addr.bitlen = 8*strlen(p);
 963                 memcpy(a.addr.data, &p, sizeof(p));
 964                 goto out;
 965         }
 966
 967         if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
 968                 a.addr.family = AF_PACKET;
 969                 a.addr.bitlen = 0;
 970                 if (strncmp(addr, "link:", 5) == 0)
 971                         addr+=5;
 972                 port = strchr(addr, ':');
 973                 if (port) {
 974                         *port = 0;
 975                         if (port[1] && strcmp(port+1, "*")) {
 976                                 if (get_integer(&a.port, port+1, 0)) {
 977                                         if ((a.port = xll_name_to_index(port+1)) <= 0)
 978                                                 return NULL;
 979                                 }
 980                         }
 981                 }
 982                 if (addr[0] && strcmp(addr, "*")) {
 983                         unsigned short tmp;
 984                         a.addr.bitlen = 32;
 985                         if (ll_proto_a2n(&tmp, addr))
 986                                 return NULL;
 987                         a.addr.data[0] = ntohs(tmp);
 988                 }
 989                 goto out;
 990         }
 991
 992         if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
 993                 a.addr.family = AF_NETLINK;
 994                 a.addr.bitlen = 0;
 995                 if (strncmp(addr, "netlink:", 8) == 0)
 996                         addr+=8;
 997                 port = strchr(addr, ':');
 998                 if (port) {
 999                         *port = 0;
1000                         if (port[1] && strcmp(port+1, "*")) {
1001                                 if (get_integer(&a.port, port+1, 0)) {
1002                                         if (strcmp(port+1, "kernel") == 0)
1003                                                 a.port = 0;
1004                                         else
1005                                                 return NULL;
1006                                 }
1007                         }
1008                 }
1009                 if (addr[0] && strcmp(addr, "*")) {
1010                         a.addr.bitlen = 32;
1011                         if (get_u32(a.addr.data, addr, 0)) {
1012                                 if (strcmp(addr, "rtnl") == 0)
1013                                         a.addr.data[0] = 0;
1014                                 else if (strcmp(addr, "fw") == 0)
1015                                         a.addr.data[0] = 3;
1016                                 else if (strcmp(addr, "tcpdiag") == 0)
1017                                         a.addr.data[0] = 4;
1018                                 else
1019                                         return NULL;
1020                         }
1021                 }
1022                 goto out;
1023         }
1024
1025         if (strncmp(addr, "inet:", 5) == 0) {
1026                 addr += 5;
1027                 fam = AF_INET;
1028         } else if (strncmp(addr, "inet6:", 6) == 0) {
1029                 addr += 6;
1030                 fam = AF_INET6;
1031         }
1032
1033         /* URL-like literal [] */
1034         if (addr[0] == '[') {
1035                 addr++;
1036                 if ((port = strchr(addr, ']')) == NULL)
1037                         return NULL;
1038                 *port++ = 0;
1039         } else if (addr[0] == '*') {
1040                 port = addr+1;
1041         } else {
1042                 port = strrchr(strchr(addr, '/') ? : addr, ':');
1043         }
1044         if (port && *port) {
1045                 if (*port != ':')
1046                         return NULL;
1047                 *port++ = 0;
1048                 if (*port && *port != '*') {
1049                         if (get_integer(&a.port, port, 0)) {
1050                                 struct servent *se1 = NULL;
1051                                 struct servent *se2 = NULL;
1052                                 if (current_filter.dbs&(1<<UDP_DB))
1053                                         se1 = getservbyname(port, UDP_PROTO);
1054                                 if (current_filter.dbs&(1<<TCP_DB))
1055                                         se2 = getservbyname(port, TCP_PROTO);
1056                                 if (se1 && se2 && se1->s_port != se2->s_port) {
1057                                         fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1058                                         return NULL;
1059                                 }
1060                                 if (!se1)
1061                                         se1 = se2;
1062                                 if (se1) {
1063                                         a.port = ntohs(se1->s_port);
1064                                 } else {
1065                                         struct scache *s;
1066                                         for (s = rlist; s; s = s->next) {
1067                                                 if ((s->proto == UDP_PROTO &&
1068                                                      (current_filter.dbs&(1<<UDP_DB))) ||
1069                                                     (s->proto == TCP_PROTO &&
1070                                                      (current_filter.dbs&(1<<TCP_DB)))) {
1071                                                         if (s->name && strcmp(s->name, port) == 0) {
1072                                                                 if (a.port > 0 && a.port != s->port) {
1073                                                                         fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1074                                                                         return NULL;
1075                                                                 }
1076                                                                 a.port = s->port;
1077                                                         }
1078                                                 }
1079                                         }
1080                                         if (a.port <= 0) {
1081                                                 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1082                                                 return NULL;
1083                                         }
1084                                 }
1085                         }
1086                 }
1087         }
1088         if (addr && *addr && *addr != '*') {
1089                 if (get_prefix_1(&a.addr, addr, fam)) {
1090                         if (get_dns_host(&a, addr, fam)) {
1091                                 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1092                                 return NULL;
1093                         }
1094                 }
1095         }
1096
1097         out:
1098         res = malloc(sizeof(*res));
1099         if (res)
1100                 memcpy(res, &a, sizeof(a));
1101         return res;
1102 }
1103
1104 static int tcp_show_line(char *line, struct filter *f, int family)
1105 {
1106         struct tcpstat s;
1107         char *loc, *rem, *data;
1108         char opt[256];
1109         int n;
1110         char *p;
1111
1112         if ((p = strchr(line, ':')) == NULL)
1113                 return -1;
1114         loc = p+2;
1115
1116         if ((p = strchr(loc, ':')) == NULL)
1117                 return -1;
1118         p[5] = 0;
1119         rem = p+6;
1120
1121         if ((p = strchr(rem, ':')) == NULL)
1122                 return -1;
1123         p[5] = 0;
1124         data = p+6;
1125
1126         do {
1127                 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1128
1129                 if (!(f->states & (1<<state)))
1130                         return 0;
1131         } while (0);
1132
1133         s.local.family = s.remote.family = family;
1134         if (family == AF_INET) {
1135                 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1136                 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1137                 s.local.bytelen = s.remote.bytelen = 4;
1138         } else {
1139                 sscanf(loc, "%08x%08x%08x%08x:%x",
1140                        s.local.data,
1141                        s.local.data+1,
1142                        s.local.data+2,
1143                        s.local.data+3,
1144                        &s.lport);
1145                 sscanf(rem, "%08x%08x%08x%08x:%x",
1146                        s.remote.data,
1147                        s.remote.data+1,
1148                        s.remote.data+2,
1149                        s.remote.data+3,
1150                        &s.rport);
1151                 s.local.bytelen = s.remote.bytelen = 16;
1152         }
1153
1154         if (f->f && run_ssfilter(f->f, &s) == 0)
1155                 return 0;
1156
1157         opt[0] = 0;
1158         n = sscanf(data, "%x %x:%x %x:%x %x %d %d %d %d %llx %d %d %d %d %d %[^\n]\n",
1159                    &s.state, &s.wq, &s.rq,
1160                    &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1161                    &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1162                    &s.cwnd, &s.ssthresh, opt);
1163
1164         if (n < 17)
1165                 opt[0] = 0;
1166
1167         if (n < 12) {
1168                 s.rto = 0;
1169                 s.cwnd = 2;
1170                 s.ssthresh = -1;
1171                 s.ato = s.qack = 0;
1172         }
1173
1174         if (netid_width)
1175                 printf("%-*s ", netid_width, "tcp");
1176         if (state_width)
1177                 printf("%-*s ", state_width, sstate_name[s.state]);
1178
1179         printf("%-6d %-6d ", s.rq, s.wq);
1180
1181         formatted_print(&s.local, s.lport);
1182         formatted_print(&s.remote, s.rport);
1183
1184         if (show_options) {
1185                 if (s.timer) {
1186                         if (s.timer > 4)
1187                                 s.timer = 5;
1188                         printf(" timer:(%s,%s,%d)",
1189                                tmr_name[s.timer],
1190                                print_hz_timer(s.timeout),
1191                                s.timer != 1 ? s.probes : s.retrs);
1192                 }
1193         }
1194         if (show_tcpinfo) {
1195                 if (s.rto && s.rto != 3*get_hz())
1196                         printf(" rto:%g", (double)s.rto/get_hz());
1197                 if (s.ato)
1198                         printf(" ato:%g", (double)s.ato/get_hz());
1199                 if (s.cwnd != 2)
1200                         printf(" cwnd:%d", s.cwnd);
1201                 if (s.ssthresh != -1)
1202                         printf(" ssthresh:%d", s.ssthresh);
1203                 if (s.qack/2)
1204                         printf(" qack:%d", s.qack/2);
1205                 if (s.qack&1)
1206                         printf(" bidir");
1207         }
1208         if (show_users) {
1209                 char ubuf[4096];
1210                 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1211                         printf(" users:(%s)", ubuf);
1212         }
1213         if (show_details) {
1214                 if (s.uid)
1215                         printf(" uid:%u", (unsigned)s.uid);
1216                 printf(" ino:%u", (unsigned)s.ino);
1217                 printf(" sk:%llx", s.sk);
1218                 if (opt[0])
1219                         printf(" opt:\"%s\"", opt);
1220         }
1221         printf("\n");
1222
1223         return 0;
1224 }
1225
1226 static int generic_record_read(int fd, char *buf, int bufsize,
1227                         int (*worker)(char*, struct filter *, int),
1228                         struct filter *f, int fam)
1229 {
1230         int n;
1231         int recsize;
1232         int eof = 0;
1233         char *p;
1234
1235         /* Load the first chunk and calculate record length from it. */
1236         n = read(fd, buf, bufsize);
1237         if (n < 0)
1238                 goto outerr;
1239         /* I _know_ that this is wrong, do not remind. :-)
1240          * But this works nowadays. */
1241         if (n < bufsize)
1242                 eof = 1;
1243         p = memchr(buf, '\n', n);
1244         if (p == NULL || (p-buf) >= n)
1245                 goto outwrongformat;
1246         recsize = (p-buf)+1;
1247         p = buf+recsize;
1248
1249         for (;;) {
1250                 while ((p+recsize) - buf <= n) {
1251                         if (p[recsize-1] != '\n')
1252                                 goto outwrongformat;
1253                         p[recsize-1] = 0;
1254                         if (worker(p, f, fam) < 0)
1255                                 goto done;
1256                         p += recsize;
1257                 }
1258                 if (!eof) {
1259                         int remains = (buf+bufsize) - p;
1260                         memcpy(buf, p, remains);
1261                         p = buf+remains;
1262                         n = read(fd, p, (buf+bufsize) - p);
1263                         if (n < 0)
1264                                 goto outerr;
1265                         if (n < (buf+bufsize) - p) {
1266                                 eof = 1;
1267                                 if (n == 0) {
1268                                         if (remains)
1269                                                 goto outwrongformat;
1270                                         goto done;
1271                                 }
1272                         }
1273                         n += remains;
1274                         p = buf;
1275                 } else {
1276                         if (p != buf+n)
1277                                 goto outwrongformat;
1278                         goto done;
1279                 }
1280         }
1281 done:
1282         return 0;
1283
1284 outwrongformat:
1285         errno = EINVAL;
1286 outerr:
1287         return -1;
1288 }
1289
1290 static char *sprint_bw(char *buf, double bw)
1291 {
1292         if (bw > 1000000.)
1293                 sprintf(buf,"%.1fM", bw / 1000000.);
1294         else if (bw > 1000.)
1295                 sprintf(buf,"%.1fK", bw / 1000.);
1296         else
1297                 sprintf(buf, "%g", bw);
1298
1299         return buf;
1300 }
1301
1302 static void tcp_show_info(const struct nlmsghdr *nlh, struct tcpdiagmsg *r)
1303 {
1304         struct rtattr * tb[TCPDIAG_MAX+1];
1305         char b1[64];
1306         double rtt = 0;
1307
1308         parse_rtattr(tb, TCPDIAG_MAX, (struct rtattr*)(r+1),
1309                      nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1310
1311         if (tb[TCPDIAG_MEMINFO]) {
1312                 const struct tcpdiag_meminfo *minfo
1313                         = RTA_DATA(tb[TCPDIAG_MEMINFO]);
1314                 printf(" mem:(r%u,w%u,f%u,t%u)",
1315                        minfo->tcpdiag_rmem,
1316                        minfo->tcpdiag_wmem,
1317                        minfo->tcpdiag_fmem,
1318                        minfo->tcpdiag_tmem);
1319         }
1320
1321         if (tb[TCPDIAG_INFO]) {
1322                 struct tcp_info *info;
1323                 int len = RTA_PAYLOAD(tb[TCPDIAG_INFO]);
1324
1325                 /* workaround for older kernels with less fields */
1326                 if (len < sizeof(*info)) {
1327                         info = alloca(sizeof(*info));
1328                         memset(info, 0, sizeof(*info));
1329                         memcpy(info, RTA_DATA(tb[TCPDIAG_INFO]), len);
1330                 } else
1331                         info = RTA_DATA(tb[TCPDIAG_INFO]);
1332
1333                 if (show_options) {
1334                         if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1335                                 printf(" ts");
1336                         if (info->tcpi_options & TCPI_OPT_SACK)
1337                                 printf(" sack");
1338                         if (info->tcpi_options & TCPI_OPT_ECN)
1339                                 printf(" ecn");
1340                 }
1341                 if (tb[TCPDIAG_CONG])
1342                         printf("%s", (char *) RTA_DATA(tb[TCPDIAG_CONG]));
1343
1344                 if (info->tcpi_options & TCPI_OPT_WSCALE)
1345                         printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1346                                info->tcpi_rcv_wscale);
1347                 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1348                         printf(" rto:%g", (double)info->tcpi_rto/1000);
1349                 if (info->tcpi_rtt)
1350                         printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1351                                (double)info->tcpi_rttvar/1000);
1352                 if (info->tcpi_ato)
1353                         printf(" ato:%g", (double)info->tcpi_ato/1000);
1354                 if (info->tcpi_snd_cwnd != 2)
1355                         printf(" cwnd:%d", info->tcpi_snd_cwnd);
1356                 if (info->tcpi_snd_ssthresh < 0xFFFF)
1357                         printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
1358
1359                 rtt = (double) info->tcpi_rtt;
1360                 if (tb[TCPDIAG_VEGASINFO]) {
1361                         const struct tcpvegas_info *vinfo
1362                                 = RTA_DATA(tb[TCPDIAG_VEGASINFO]);
1363
1364                         if (vinfo->tcpv_enabled &&
1365                             vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1366                                 rtt =  vinfo->tcpv_rtt;
1367                 }
1368
1369                 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1370                         printf(" send %sbps",
1371                                sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1372                                          (double) info->tcpi_snd_mss * 8000000.
1373                                          / rtt));
1374                 }
1375
1376                 if (info->tcpi_rcv_rtt)
1377                         printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1378                 if (info->tcpi_rcv_space)
1379                         printf(" rcv_space:%d", info->tcpi_rcv_space);
1380
1381         }
1382 }
1383
1384 int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f)
1385 {
1386         struct tcpdiagmsg *r = NLMSG_DATA(nlh);
1387         struct tcpstat s;
1388
1389         s.state = r->tcpdiag_state;
1390         s.local.family = s.remote.family = r->tcpdiag_family;
1391         s.lport = ntohs(r->id.tcpdiag_sport);
1392         s.rport = ntohs(r->id.tcpdiag_dport);
1393         if (s.local.family == AF_INET) {
1394                 s.local.bytelen = s.remote.bytelen = 4;
1395         } else {
1396                 s.local.bytelen = s.remote.bytelen = 16;
1397         }
1398         memcpy(s.local.data, r->id.tcpdiag_src, s.local.bytelen);
1399         memcpy(s.remote.data, r->id.tcpdiag_dst, s.local.bytelen);
1400
1401         if (f && f->f && run_ssfilter(f->f, &s) == 0)
1402                 return 0;
1403
1404         if (netid_width)
1405                 printf("%-*s ", netid_width, "tcp");
1406         if (state_width)
1407                 printf("%-*s ", state_width, sstate_name[s.state]);
1408
1409         printf("%-6d %-6d ", r->tcpdiag_rqueue, r->tcpdiag_wqueue);
1410
1411         formatted_print(&s.local, s.lport);
1412         formatted_print(&s.remote, s.rport);
1413
1414         if (show_options) {
1415                 if (r->tcpdiag_timer) {
1416                         if (r->tcpdiag_timer > 4)
1417                                 r->tcpdiag_timer = 5;
1418                         printf(" timer:(%s,%s,%d)",
1419                                tmr_name[r->tcpdiag_timer],
1420                                print_ms_timer(r->tcpdiag_expires),
1421                                r->tcpdiag_retrans);
1422                 }
1423         }
1424         if (show_users) {
1425                 char ubuf[4096];
1426                 if (find_users(r->tcpdiag_inode, ubuf, sizeof(ubuf)) > 0)
1427                         printf(" users:(%s)", ubuf);
1428         }
1429         if (show_details) {
1430                 if (r->tcpdiag_uid)
1431                         printf(" uid:%u", (unsigned)r->tcpdiag_uid);
1432                 printf(" ino:%u", (unsigned)r->tcpdiag_inode);
1433                 printf(" sk:%08x", r->id.tcpdiag_cookie[0]);
1434                 if (r->id.tcpdiag_cookie[1] != 0)
1435                         printf("%08x", r->id.tcpdiag_cookie[1]);
1436         }
1437         if (show_mem || show_tcpinfo) {
1438                 printf("\n\t");
1439                 tcp_show_info(nlh, r);
1440         }
1441
1442         printf("\n");
1443
1444         return 0;
1445 }
1446
1447 int tcp_show_netlink(struct filter *f, FILE *dump_fp)
1448 {
1449         int fd;
1450         struct sockaddr_nl nladdr;
1451         struct {
1452                 struct nlmsghdr nlh;
1453                 struct tcpdiagreq r;
1454         } req;
1455         char    *bc = NULL;
1456         int     bclen;
1457         struct msghdr msg;
1458         struct rtattr rta;
1459         char    buf[8192];
1460         struct iovec iov[3];
1461
1462         if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_TCPDIAG)) < 0)
1463                 return -1;
1464
1465         memset(&nladdr, 0, sizeof(nladdr));
1466         nladdr.nl_family = AF_NETLINK;
1467
1468         req.nlh.nlmsg_len = sizeof(req);
1469         req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
1470         req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1471         req.nlh.nlmsg_pid = 0;
1472         req.nlh.nlmsg_seq = 123456;
1473         memset(&req.r, 0, sizeof(req.r));
1474         req.r.tcpdiag_family = AF_INET;
1475         req.r.tcpdiag_states = f->states;
1476         if (show_mem)
1477                 req.r.tcpdiag_ext |= (1<<(TCPDIAG_MEMINFO-1));
1478
1479         if (show_tcpinfo) {
1480                 req.r.tcpdiag_ext |= (1<<(TCPDIAG_INFO-1));
1481                 req.r.tcpdiag_ext |= (1<<(TCPDIAG_VEGASINFO-1));
1482                 req.r.tcpdiag_ext |= (1<<(TCPDIAG_CONG-1));
1483         }
1484
1485         iov[0] = (struct iovec){
1486                 .iov_base = &req,
1487                 .iov_len = sizeof(req)
1488         };
1489         if (f->f) {
1490                 bclen = ssfilter_bytecompile(f->f, &bc);
1491                 rta.rta_type = TCPDIAG_REQ_BYTECODE;
1492                 rta.rta_len = RTA_LENGTH(bclen);
1493                 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1494                 iov[2] = (struct iovec){ bc, bclen };
1495                 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1496         }
1497
1498         msg = (struct msghdr) {
1499                 .msg_name = (void*)&nladdr,
1500                 .msg_namelen = sizeof(nladdr),
1501                 .msg_iov = iov,
1502                 .msg_iovlen = f->f ? 3 : 1,
1503         };
1504
1505         if (sendmsg(fd, &msg, 0) < 0)
1506                 return -1;
1507
1508         iov[0] = (struct iovec){
1509                 .iov_base = buf,
1510                 .iov_len = sizeof(buf)
1511         };
1512
1513         while (1) {
1514                 int status;
1515                 struct nlmsghdr *h;
1516
1517                 msg = (struct msghdr) {
1518                         (void*)&nladdr, sizeof(nladdr),
1519                         iov,    1,
1520                         NULL,   0,
1521                         0
1522                 };
1523
1524                 status = recvmsg(fd, &msg, 0);
1525
1526                 if (status < 0) {
1527                         if (errno == EINTR)
1528                                 continue;
1529                         perror("OVERRUN");
1530                         continue;
1531                 }
1532                 if (status == 0) {
1533                         fprintf(stderr, "EOF on netlink\n");
1534                         return 0;
1535                 }
1536
1537                 if (dump_fp)
1538                         fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1539
1540                 h = (struct nlmsghdr*)buf;
1541                 while (NLMSG_OK(h, status)) {
1542                         int err;
1543
1544                         if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1545                             h->nlmsg_seq != 123456)
1546                                 goto skip_it;
1547
1548                         if (h->nlmsg_type == NLMSG_DONE)
1549                                 return 0;
1550                         if (h->nlmsg_type == NLMSG_ERROR) {
1551                                 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1552                                 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1553                                         fprintf(stderr, "ERROR truncated\n");
1554                                 } else {
1555                                         errno = -err->error;
1556                                         perror("TCPDIAG answers");
1557                                 }
1558                                 return 0;
1559                         }
1560                         if (!dump_fp) {
1561                                 err = tcp_show_sock(h, NULL);
1562                                 if (err < 0)
1563                                         return err;
1564                         }
1565
1566 skip_it:
1567                         h = NLMSG_NEXT(h, status);
1568                 }
1569                 if (msg.msg_flags & MSG_TRUNC) {
1570                         fprintf(stderr, "Message truncated\n");
1571                         continue;
1572                 }
1573                 if (status) {
1574                         fprintf(stderr, "!!!Remnant of size %d\n", status);
1575                         exit(1);
1576                 }
1577         }
1578         return 0;
1579 }
1580
1581 int tcp_show_netlink_file(struct filter *f)
1582 {
1583         FILE    *fp;
1584         char    buf[8192];
1585
1586         if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1587                 perror("fopen($TCPDIAG_FILE)");
1588                 return -1;
1589         }
1590
1591         while (1) {
1592                 int status, err;
1593                 struct nlmsghdr *h = (struct nlmsghdr*)buf;
1594
1595                 status = fread(buf, 1, sizeof(*h), fp);
1596                 if (status < 0) {
1597                         perror("Reading header from $TCPDIAG_FILE");
1598                         return -1;
1599                 }
1600                 if (status != sizeof(*h)) {
1601                         perror("Unexpected EOF reading $TCPDIAG_FILE");
1602                         return -1;
1603                 }
1604
1605                 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
1606
1607                 if (status < 0) {
1608                         perror("Reading $TCPDIAG_FILE");
1609                         return -1;
1610                 }
1611                 if (status + sizeof(*h) < h->nlmsg_len) {
1612                         perror("Unexpected EOF reading $TCPDIAG_FILE");
1613                         return -1;
1614                 }
1615
1616                 /* The only legal exit point */
1617                 if (h->nlmsg_type == NLMSG_DONE)
1618                         return 0;
1619
1620                 if (h->nlmsg_type == NLMSG_ERROR) {
1621                         struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1622                         if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1623                                 fprintf(stderr, "ERROR truncated\n");
1624                         } else {
1625                                 errno = -err->error;
1626                                 perror("TCPDIAG answered");
1627                         }
1628                         return -1;
1629                 }
1630
1631                 err = tcp_show_sock(h, f);
1632                 if (err < 0)
1633                         return err;
1634         }
1635 }
1636
1637 int tcp_show(struct filter *f)
1638 {
1639         int fd = -1;
1640         char *buf = NULL;
1641         int bufsize = 64*1024;
1642
1643         dg_proto = TCP_PROTO;
1644
1645         if (getenv("TCPDIAG_FILE"))
1646                 return tcp_show_netlink_file(f);
1647
1648         if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
1649             && tcp_show_netlink(f, NULL) == 0)
1650                 return 0;
1651
1652         /* Sigh... We have to parse /proc/net/tcp... */
1653
1654         /* Estimate amount of sockets and try to allocate
1655          * huge buffer to read all the table at one read.
1656          * Limit it by 16MB though. The assumption is: as soon as
1657          * kernel was able to hold information about N connections,
1658          * it is able to give us some memory for snapshot.
1659          */
1660         if (1) {
1661                 int guess = slabstat.socks+slabstat.tcp_syns;
1662                 if (f->states&(1<<SS_TIME_WAIT))
1663                         guess += slabstat.tcp_tws;
1664                 if (guess > (16*1024*1024)/128)
1665                         guess = (16*1024*1024)/128;
1666                 guess *= 128;
1667                 if (guess > bufsize)
1668                         bufsize = guess;
1669         }
1670         while (bufsize >= 64*1024) {
1671                 if ((buf = malloc(bufsize)) != NULL)
1672                         break;
1673                 bufsize /= 2;
1674         }
1675         if (buf == NULL) {
1676                 errno = ENOMEM;
1677                 return -1;
1678         }
1679
1680         if (f->families & (1<<AF_INET)) {
1681                 if ((fd = net_tcp_open()) < 0)
1682                         goto outerr;
1683                 if (generic_record_read(fd, buf, bufsize, tcp_show_line, f, AF_INET))
1684                         goto outerr;
1685                 close(fd);
1686         }
1687
1688         if ((f->families & (1<<AF_INET6)) &&
1689             (fd = net_tcp6_open()) >= 0) {
1690                 if (generic_record_read(fd, buf, bufsize, tcp_show_line, f, AF_INET6))
1691                         goto outerr;
1692                 close(fd);
1693         }
1694
1695         free(buf);
1696         return 0;
1697
1698 outerr:
1699         do {
1700                 int saved_errno = errno;
1701                 if (buf)
1702                         free(buf);
1703                 if (fd >= 0)
1704                         close(fd);
1705                 errno = saved_errno;
1706                 return -1;
1707         } while (0);
1708 }
1709
1710
1711 int dgram_show_line(char *line, struct filter *f, int family)
1712 {
1713         struct tcpstat s;
1714         char *loc, *rem, *data;
1715         char opt[256];
1716         int n;
1717         char *p;
1718
1719         if ((p = strchr(line, ':')) == NULL)
1720                 return -1;
1721         loc = p+2;
1722
1723         if ((p = strchr(loc, ':')) == NULL)
1724                 return -1;
1725         p[5] = 0;
1726         rem = p+6;
1727
1728         if ((p = strchr(rem, ':')) == NULL)
1729                 return -1;
1730         p[5] = 0;
1731         data = p+6;
1732
1733         do {
1734                 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1735
1736                 if (!(f->states & (1<<state)))
1737                         return 0;
1738         } while (0);
1739
1740         s.local.family = s.remote.family = family;
1741         if (family == AF_INET) {
1742                 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1743                 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1744                 s.local.bytelen = s.remote.bytelen = 4;
1745         } else {
1746                 sscanf(loc, "%08x%08x%08x%08x:%x",
1747                        s.local.data,
1748                        s.local.data+1,
1749                        s.local.data+2,
1750                        s.local.data+3,
1751                        &s.lport);
1752                 sscanf(rem, "%08x%08x%08x%08x:%x",
1753                        s.remote.data,
1754                        s.remote.data+1,
1755                        s.remote.data+2,
1756                        s.remote.data+3,
1757                        &s.rport);
1758                 s.local.bytelen = s.remote.bytelen = 16;
1759         }
1760
1761         if (f->f && run_ssfilter(f->f, &s) == 0)
1762                 return 0;
1763
1764         opt[0] = 0;
1765         n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %d %d %llx %[^\n]\n",
1766                &s.state, &s.wq, &s.rq,
1767                &s.uid, &s.ino,
1768                &s.refcnt, &s.sk, opt);
1769
1770         if (n < 9)
1771                 opt[0] = 0;
1772
1773         if (netid_width)
1774                 printf("%-*s ", netid_width, dg_proto);
1775         if (state_width)
1776                 printf("%-*s ", state_width, sstate_name[s.state]);
1777
1778         printf("%-6d %-6d ", s.rq, s.wq);
1779
1780         formatted_print(&s.local, s.lport);
1781         formatted_print(&s.remote, s.rport);
1782
1783         if (show_users) {
1784                 char ubuf[4096];
1785                 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1786                         printf(" users:(%s)", ubuf);
1787         }
1788
1789         if (show_details) {
1790                 if (s.uid)
1791                         printf(" uid=%u", (unsigned)s.uid);
1792                 printf(" ino=%u", (unsigned)s.ino);
1793                 printf(" sk=%llx", s.sk);
1794                 if (opt[0])
1795                         printf(" opt:\"%s\"", opt);
1796         }
1797         printf("\n");
1798
1799         return 0;
1800 }
1801
1802
1803 int udp_show(struct filter *f)
1804 {
1805         int fd = -1;
1806         char buf[8192];
1807         int  bufsize = sizeof(buf);
1808
1809         dg_proto = UDP_PROTO;
1810
1811         if (f->families&(1<<AF_INET)) {
1812                 if ((fd = net_udp_open()) < 0)
1813                         goto outerr;
1814                 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET))
1815                         goto outerr;
1816                 close(fd);
1817         }
1818
1819         if ((f->families&(1<<AF_INET6)) &&
1820             (fd = net_udp6_open()) >= 0) {
1821                 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET6))
1822                         goto outerr;
1823                 close(fd);
1824         }
1825         return 0;
1826
1827 outerr:
1828         do {
1829                 int saved_errno = errno;
1830                 if (fd >= 0)
1831                         close(fd);
1832                 errno = saved_errno;
1833                 return -1;
1834         } while (0);
1835 }
1836
1837 int raw_show(struct filter *f)
1838 {
1839         int fd = -1;
1840         char buf[8192];
1841         int  bufsize = sizeof(buf);
1842
1843         dg_proto = RAW_PROTO;
1844
1845         if (f->families&(1<<AF_INET)) {
1846                 if ((fd = net_raw_open()) < 0)
1847                         goto outerr;
1848                 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET))
1849                         goto outerr;
1850                 close(fd);
1851         }
1852
1853         if ((f->families&(1<<AF_INET6)) &&
1854             (fd = net_raw6_open()) >= 0) {
1855                 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET6))
1856                         goto outerr;
1857                 close(fd);
1858         }
1859         return 0;
1860
1861 outerr:
1862         do {
1863                 int saved_errno = errno;
1864                 if (fd >= 0)
1865                         close(fd);
1866                 errno = saved_errno;
1867                 return -1;
1868         } while (0);
1869 }
1870
1871
1872 struct unixstat
1873 {
1874         struct unixstat *next;
1875         int ino;
1876         int peer;
1877         int rq;
1878         int wq;
1879         int state;
1880         int type;
1881         char *name;
1882 };
1883
1884
1885
1886 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
1887                          SS_ESTABLISHED, SS_CLOSING };
1888
1889
1890 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
1891
1892 void unix_list_free(struct unixstat *list)
1893 {
1894         while (list) {
1895                 struct unixstat *s = list;
1896                 list = list->next;
1897                 if (s->name)
1898                         free(s->name);
1899                 free(s);
1900         }
1901 }
1902
1903 void unix_list_print(struct unixstat *list, struct filter *f)
1904 {
1905         struct unixstat *s;
1906         char *peer;
1907
1908         for (s = list; s; s = s->next) {
1909                 if (!(f->states & (1<<s->state)))
1910                         continue;
1911                 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
1912                         continue;
1913                 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
1914                         continue;
1915
1916                 peer = "*";
1917                 if (s->peer) {
1918                         struct unixstat *p;
1919                         for (p = list; p; p = p->next) {
1920                                 if (s->peer == p->ino)
1921                                         break;
1922                         }
1923                         if (!p) {
1924                                 peer = "?";
1925                         } else {
1926                                 peer = p->name ? : "*";
1927                         }
1928                 }
1929
1930                 if (f->f) {
1931                         struct tcpstat tst;
1932                         tst.local.family = AF_UNIX;
1933                         tst.remote.family = AF_UNIX;
1934                         memcpy(tst.local.data, &s->name, sizeof(s->name));
1935                         if (strcmp(peer, "*") == 0)
1936                                 memset(tst.remote.data, 0, sizeof(peer));
1937                         else
1938                                 memcpy(tst.remote.data, &peer, sizeof(peer));
1939                         if (run_ssfilter(f->f, &tst) == 0)
1940                                 continue;
1941                 }
1942
1943                 if (netid_width)
1944                         printf("%-*s ", netid_width,
1945                                s->type == SOCK_STREAM ? "u_str" : "u_dgr");
1946                 if (state_width)
1947                         printf("%-*s ", state_width, sstate_name[s->state]);
1948                 printf("%-6d %-6d ", s->rq, s->wq);
1949                 printf("%*s %-*d %*s %-*d",
1950                        addr_width, s->name ? : "*", serv_width, s->ino,
1951                        addr_width, peer, serv_width, s->peer);
1952                 if (show_users) {
1953                         char ubuf[4096];
1954                         if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0)
1955                                 printf(" users:(%s)", ubuf);
1956                 }
1957                 printf("\n");
1958         }
1959 }
1960
1961 int unix_show(struct filter *f)
1962 {
1963         FILE *fp;
1964         char buf[256];
1965         char name[128];
1966         int  newformat = 0;
1967         int  cnt;
1968         struct unixstat *list = NULL;
1969
1970         if ((fp = fdopen(net_unix_open(), "r")) == NULL)
1971                 return -1;
1972         fgets(buf, sizeof(buf)-1, fp);
1973
1974         if (memcmp(buf, "Peer", 4) == 0)
1975                 newformat = 1;
1976         cnt = 0;
1977
1978         while (fgets(buf, sizeof(buf)-1, fp)) {
1979                 struct unixstat *u, **insp;
1980                 int flags;
1981
1982                 if (!(u = malloc(sizeof(*u))))
1983                         break;
1984                 u->name = NULL;
1985
1986                 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
1987                            &u->peer, &u->rq, &u->wq, &flags, &u->type,
1988                            &u->state, &u->ino, name) < 8)
1989                         name[0] = 0;
1990
1991                 if (flags&(1<<16)) {
1992                         u->state = SS_LISTEN;
1993                 } else {
1994                         u->state = unix_state_map[u->state-1];
1995                         if (u->type == SOCK_DGRAM &&
1996                             u->state == SS_CLOSE &&
1997                             u->peer)
1998                                 u->state = SS_ESTABLISHED;
1999                 }
2000
2001                 if (!newformat) {
2002                         u->peer = 0;
2003                         u->rq = 0;
2004                         u->wq = 0;
2005                 }
2006
2007                 insp = &list;
2008                 while (*insp) {
2009                         if (u->type < (*insp)->type ||
2010                             (u->type == (*insp)->type &&
2011                              u->ino < (*insp)->ino))
2012                                 break;
2013                         insp = &(*insp)->next;
2014                 }
2015                 u->next = *insp;
2016                 *insp = u;
2017
2018                 if (name[0]) {
2019                         if ((u->name = malloc(strlen(name)+1)) == NULL)
2020                                 break;
2021                         strcpy(u->name, name);
2022                 }
2023                 if (++cnt > MAX_UNIX_REMEMBER) {
2024                         unix_list_print(list, f);
2025                         unix_list_free(list);
2026                         list = NULL;
2027                         cnt = 0;
2028                 }
2029         }
2030
2031         if (list) {
2032                 unix_list_print(list, f);
2033                 unix_list_free(list);
2034                 list = NULL;
2035                 cnt = 0;
2036         }
2037
2038         return 0;
2039 }
2040
2041
2042 int packet_show(struct filter *f)
2043 {
2044         FILE *fp;
2045         char buf[256];
2046         int type;
2047         int prot;
2048         int iface;
2049         int state;
2050         int rq;
2051         int uid;
2052         int ino;
2053         unsigned long long sk;
2054
2055         if (!(f->states & (1<<SS_CLOSE)))
2056                 return 0;
2057
2058         if ((fp = fdopen(net_packet_open(), "r")) == NULL)
2059                 return -1;
2060         fgets(buf, sizeof(buf)-1, fp);
2061
2062         while (fgets(buf, sizeof(buf)-1, fp)) {
2063                 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2064                        &sk,
2065                        &type, &prot, &iface, &state,
2066                        &rq, &uid, &ino);
2067
2068                 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2069                         continue;
2070                 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2071                         continue;
2072                 if (f->f) {
2073                         struct tcpstat tst;
2074                         tst.local.family = AF_PACKET;
2075                         tst.remote.family = AF_PACKET;
2076                         tst.rport = 0;
2077                         tst.lport = iface;
2078                         tst.local.data[0] = prot;
2079                         tst.remote.data[0] = 0;
2080                         if (run_ssfilter(f->f, &tst) == 0)
2081                                 continue;
2082                 }
2083
2084                 if (netid_width)
2085                         printf("%-*s ", netid_width,
2086                                type == SOCK_RAW ? "p_raw" : "p_dgr");
2087                 if (state_width)
2088                         printf("%-*s ", state_width, "UNCONN");
2089                 printf("%-6d %-6d ", rq, 0);
2090                 if (prot == 3) {
2091                         printf("%*s:", addr_width, "*");
2092                 } else {
2093                         char tb[16];
2094                         printf("%*s:", addr_width,
2095                                ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2096                 }
2097                 if (iface == 0) {
2098                         printf("%-*s ", serv_width, "*");
2099                 } else {
2100                         printf("%-*s ", serv_width, xll_index_to_name(iface));
2101                 }
2102                 printf("%*s*%-*s",
2103                        addr_width, "", serv_width, "");
2104
2105                 if (show_users) {
2106                         char ubuf[4096];
2107                         if (find_users(ino, ubuf, sizeof(ubuf)) > 0)
2108                                 printf(" users:(%s)", ubuf);
2109                 }
2110                 if (show_details) {
2111                         printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2112                 }
2113                 printf("\n");
2114         }
2115
2116         return 0;
2117 }
2118
2119 int netlink_show(struct filter *f)
2120 {
2121         FILE *fp;
2122         char buf[256];
2123         int prot, pid;
2124         unsigned groups;
2125         int rq, wq, rc;
2126         unsigned long long sk, cb;
2127
2128         if (!(f->states & (1<<SS_CLOSE)))
2129                 return 0;
2130
2131         if ((fp = fdopen(net_netlink_open(), "r")) == NULL)
2132                 return -1;
2133         fgets(buf, sizeof(buf)-1, fp);
2134
2135         while (fgets(buf, sizeof(buf)-1, fp)) {
2136                 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
2137                        &sk,
2138                        &prot, &pid, &groups, &rq, &wq, &cb, &rc);
2139
2140                 if (f->f) {
2141                         struct tcpstat tst;
2142                         tst.local.family = AF_NETLINK;
2143                         tst.remote.family = AF_NETLINK;
2144                         tst.rport = -1;
2145                         tst.lport = pid;
2146                         tst.local.data[0] = prot;
2147                         tst.remote.data[0] = 0;
2148                         if (run_ssfilter(f->f, &tst) == 0)
2149                                 continue;
2150                 }
2151
2152                 if (netid_width)
2153                         printf("%-*s ", netid_width, "nl");
2154                 if (state_width)
2155                         printf("%-*s ", state_width, "UNCONN");
2156                 printf("%-6d %-6d ", rq, wq);
2157                 if (resolve_services && prot == 0)
2158                         printf("%*s:", addr_width, "rtnl");
2159                 else if (resolve_services && prot == 3)
2160                         printf("%*s:", addr_width, "fw");
2161                 else if (resolve_services && prot == 4)
2162                         printf("%*s:", addr_width, "tcpdiag");
2163                 else
2164                         printf("%*d:", addr_width, prot);
2165                 if (pid == -1) {
2166                         printf("%-*s ", serv_width, "*");
2167                 } else if (resolve_services) {
2168                         int done = 0;
2169                         if (!pid) {
2170                                 done = 1;
2171                                 printf("%-*s ", serv_width, "kernel");
2172                         } else if (pid > 0) {
2173                                 char procname[64];
2174                                 FILE *fp;
2175                                 sprintf(procname, "%s/%d/stat",
2176                                         getenv("PROC_ROOT") ? : "/proc", pid);
2177                                 if ((fp = fopen(procname, "r")) != NULL) {
2178                                         if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2179                                                 sprintf(procname+strlen(procname), "/%d", pid);
2180                                                 printf("%-*s ", serv_width, procname);
2181                                                 done = 1;
2182                                         }
2183                                         fclose(fp);
2184                                 }
2185                         }
2186                         if (!done)
2187                                 printf("%-*d ", serv_width, pid);
2188                 } else {
2189                         printf("%-*d ", serv_width, pid);
2190                 }
2191                 printf("%*s*%-*s",
2192                        addr_width, "", serv_width, "");
2193
2194                 if (show_details) {
2195                         printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
2196                 }
2197                 printf("\n");
2198         }
2199
2200         return 0;
2201 }
2202
2203 struct snmpstat
2204 {
2205         int tcp_estab;
2206 };
2207
2208 int get_snmp_int(char *proto, char *key, int *result)
2209 {
2210         char buf[1024];
2211         FILE *fp;
2212         int protolen = strlen(proto);
2213         int keylen = strlen(key);
2214
2215         *result = 0;
2216
2217         if ((fp = fdopen(net_snmp_open(), "r")) == NULL)
2218                 return -1;
2219
2220         while (fgets(buf, sizeof(buf), fp) != NULL) {
2221                 char *p = buf;
2222                 int  pos = 0;
2223                 if (memcmp(buf, proto, protolen))
2224                         continue;
2225                 while ((p = strchr(p, ' ')) != NULL) {
2226                         pos++;
2227                         p++;
2228                         if (memcmp(p, key, keylen) == 0 &&
2229                             (p[keylen] == ' ' || p[keylen] == '\n'))
2230                                 break;
2231                 }
2232                 if (fgets(buf, sizeof(buf), fp) == NULL)
2233                         break;
2234                 if (memcmp(buf, proto, protolen))
2235                         break;
2236                 p = buf;
2237                 while ((p = strchr(p, ' ')) != NULL) {
2238                         p++;
2239                         if (--pos == 0) {
2240                                 sscanf(p, "%d", result);
2241                                 fclose(fp);
2242                                 return 0;
2243                         }
2244                 }
2245         }
2246
2247         fclose(fp);
2248         errno = ESRCH;
2249         return -1;
2250 }
2251
2252
2253 /* Get stats from sockstat */
2254
2255 struct sockstat
2256 {
2257         int socks;
2258         int tcp_mem;
2259         int tcp_total;
2260         int tcp_orphans;
2261         int tcp_tws;
2262         int tcp4_hashed;
2263         int udp4;
2264         int raw4;
2265         int frag4;
2266         int frag4_mem;
2267         int tcp6_hashed;
2268         int udp6;
2269         int raw6;
2270         int frag6;
2271         int frag6_mem;
2272 };
2273
2274 static void get_sockstat_line(char *line, struct sockstat *s)
2275 {
2276         char id[256], rem[256];
2277
2278         if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
2279                 return;
2280
2281         if (strcmp(id, "sockets:") == 0)
2282                 sscanf(rem, "%*s%d", &s->socks);
2283         else if (strcmp(id, "UDP:") == 0)
2284                 sscanf(rem, "%*s%d", &s->udp4);
2285         else if (strcmp(id, "UDP6:") == 0)
2286                 sscanf(rem, "%*s%d", &s->udp6);
2287         else if (strcmp(id, "RAW:") == 0)
2288                 sscanf(rem, "%*s%d", &s->raw4);
2289         else if (strcmp(id, "RAW6:") == 0)
2290                 sscanf(rem, "%*s%d", &s->raw6);
2291         else if (strcmp(id, "TCP6:") == 0)
2292                 sscanf(rem, "%*s%d", &s->tcp6_hashed);
2293         else if (strcmp(id, "FRAG:") == 0)
2294                 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
2295         else if (strcmp(id, "FRAG6:") == 0)
2296                 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
2297         else if (strcmp(id, "TCP:") == 0)
2298                 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
2299                        &s->tcp4_hashed,
2300                        &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
2301 }
2302
2303 int get_sockstat(struct sockstat *s)
2304 {
2305         char buf[256];
2306         FILE *fp;
2307
2308         memset(s, 0, sizeof(*s));
2309
2310         if ((fp = fdopen(net_sockstat_open(), "r")) == NULL)
2311                 return -1;
2312         while(fgets(buf, sizeof(buf), fp) != NULL)
2313                 get_sockstat_line(buf, s);
2314         fclose(fp);
2315
2316         if ((fp = fdopen(net_sockstat6_open(), "r")) == NULL)
2317                 return 0;
2318         while(fgets(buf, sizeof(buf), fp) != NULL)
2319                 get_sockstat_line(buf, s);
2320         fclose(fp);
2321
2322         return 0;
2323 }
2324
2325 int print_summary(void)
2326 {
2327         struct sockstat s;
2328         struct snmpstat sn;
2329
2330         if (get_sockstat(&s) < 0)
2331                 perror("ss: get_sockstat");
2332         if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
2333                 perror("ss: get_snmpstat");
2334
2335         printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
2336
2337         printf("TCP:   %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
2338                s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
2339                sn.tcp_estab,
2340                s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
2341                s.tcp_orphans,
2342                slabstat.tcp_syns,
2343                s.tcp_tws, slabstat.tcp_tws,
2344                slabstat.tcp_ports
2345                );
2346
2347         printf("\n");
2348         printf("Transport Total     IP        IPv6\n");
2349         printf("*         %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
2350         printf("RAW       %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
2351         printf("UDP       %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
2352         printf("TCP       %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
2353         printf("INET      %-9d %-9d %-9d\n",
2354                s.raw4+s.udp4+s.tcp4_hashed+
2355                s.raw6+s.udp6+s.tcp6_hashed,
2356                s.raw4+s.udp4+s.tcp4_hashed,
2357                s.raw6+s.udp6+s.tcp6_hashed);
2358         printf("FRAG      %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
2359
2360         printf("\n");
2361
2362         return 0;
2363 }
2364
2365
2366 static void usage(void) __attribute__((noreturn));
2367
2368 static void usage(void)
2369 {
2370         fprintf(stderr,
2371 "Usage: ss [ OPTIONS ]\n"
2372 "       ss [ OPTIONS ] [ FILTER ]\n"
2373 "   -h, --help          this message\n"
2374 "   -V, --version       output version information\n"
2375 "   -n, --numeric       don't resolve service names\n"
2376 "   -r, --resolve       resolve host names\n"
2377 "   -a, --all           display all sockets\n"
2378 "   -l, --listening     display listening sockets\n"
2379 "   -o, --options       show timer information\n"
2380 "   -e, --extended      show detailed socket information\n"
2381 "   -m, --memory        show socket memory usage\n"
2382 "   -p, --processes     show process using socket\n"
2383 "   -i, --info          show internal TCP information\n"
2384 "   -s, --summary       show socket usage summary\n"
2385 "\n"
2386 "   -4, --ipv4          display only IP version 4 sockets\n"
2387 "   -6, --ipv6          display only IP version 6 sockets\n"
2388 "   -0, --packet        display PACKET sockets\n"
2389 "   -t, --tcp           display only TCP sockets\n"
2390 "   -u, --udp           display only UDP sockets\n"
2391 "   -w, --raw           display only RAW sockets\n"
2392 "   -x, --unix          display only Unix domain sockets\n"
2393 "   -f, --family=FAMILY display sockets of type FAMILY\n"
2394 "\n"
2395 "   -A, --query=QUERY\n"
2396 "       QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
2397 "\n"
2398 "   -F, --filter=FILE   read filter information from FILE\n"
2399 "       FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
2400                 );
2401         exit(-1);
2402 }
2403
2404
2405 int scan_state(const char *state)
2406 {
2407         int i;
2408         if (strcasecmp(state, "close") == 0 ||
2409             strcasecmp(state, "closed") == 0)
2410                 return (1<<SS_CLOSE);
2411         if (strcasecmp(state, "syn-rcv") == 0)
2412                 return (1<<SS_SYN_RECV);
2413         if (strcasecmp(state, "established") == 0)
2414                 return (1<<SS_ESTABLISHED);
2415         if (strcasecmp(state, "all") == 0)
2416                 return SS_ALL;
2417         if (strcasecmp(state, "connected") == 0)
2418                 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
2419         if (strcasecmp(state, "synchronized") == 0)
2420                 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
2421         if (strcasecmp(state, "bucket") == 0)
2422                 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
2423         if (strcasecmp(state, "big") == 0)
2424                 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
2425         for (i=0; i<SS_MAX; i++) {
2426                 if (strcasecmp(state, sstate_namel[i]) == 0)
2427                         return (1<<i);
2428         }
2429         return 0;
2430 }
2431
2432 static const struct option long_opts[] = {
2433         { "numeric", 0, 0, 'n' },
2434         { "resolve", 0, 0, 'r' },
2435         { "options", 0, 0, 'o' },
2436         { "extended", 0, 0, 'e' },
2437         { "memory", 0, 0, 'm' },
2438         { "info", 0, 0, 'i' },
2439         { "processes", 0, 0, 'p' },
2440         { "tcp", 0, 0, 't' },
2441         { "udp", 0, 0, 'u' },
2442         { "raw", 0, 0, 'w' },
2443         { "unix", 0, 0, 'x' },
2444         { "all", 0, 0, 'a' },
2445         { "listening", 0, 0, 'l' },
2446         { "ipv4", 0, 0, '4' },
2447         { "ipv6", 0, 0, '6' },
2448         { "packet", 0, 0, '0' },
2449         { "family", 1, 0, 'f' },
2450         { "socket", 1, 0, 'A' },
2451         { "summary", 0, 0, 's' },
2452         { "diag", 0, 0, 'D' },
2453         { "filter", 1, 0, 'F' },
2454         { "version", 0, 0, 'V' },
2455         { "help", 0, 0, 'h' },
2456         { 0 }
2457
2458 };
2459
2460 int main(int argc, char *argv[])
2461 {
2462         int do_default = 1;
2463         int saw_states = 0;
2464         int saw_query = 0;
2465         int do_summary = 0;
2466         const char *dump_tcpdiag = NULL;
2467         FILE *filter_fp = NULL;
2468         int ch;
2469
2470         memset(&current_filter, 0, sizeof(current_filter));
2471
2472         current_filter.states = default_filter.states;
2473
2474         while ((ch = getopt_long(argc, argv, "haletuwxnro460spf:miA:D:F:vV",
2475                                  long_opts, NULL)) != EOF) {
2476                 switch(ch) {
2477                 case 'n':
2478                         resolve_services = 0;
2479                         break;
2480                 case 'r':
2481                         resolve_hosts = 1;
2482                         break;
2483                 case 'o':
2484                         show_options = 1;
2485                         break;
2486                 case 'e':
2487                         show_options = 1;
2488                         show_details++;
2489                         break;
2490                 case 'm':
2491                         show_mem = 1;
2492                         break;
2493                 case 'i':
2494                         show_tcpinfo = 1;
2495                         break;
2496                 case 'p':
2497                         show_users++;
2498                         break;
2499                 case 't':
2500                         current_filter.dbs |= (1<<TCP_DB);
2501                         do_default = 0;
2502                         break;
2503                 case 'u':
2504                         current_filter.dbs |= (1<<UDP_DB);
2505                         do_default = 0;
2506                         break;
2507                 case 'w':
2508                         current_filter.dbs |= (1<<RAW_DB);
2509                         do_default = 0;
2510                         break;
2511                 case 'x':
2512                         current_filter.dbs |= UNIX_DBM;
2513                         do_default = 0;
2514                         break;
2515                 case 'a':
2516                         current_filter.states = SS_ALL;
2517                         break;
2518                 case 'l':
2519                         current_filter.states = (1<<SS_LISTEN);
2520                         break;
2521                 case '4':
2522                         preferred_family = AF_INET;
2523                         break;
2524                 case '6':
2525                         preferred_family = AF_INET6;
2526                         break;
2527                 case '0':
2528                         preferred_family = AF_PACKET;
2529                         break;
2530                 case 'f':
2531                         if (strcmp(optarg, "inet") == 0)
2532                                 preferred_family = AF_INET;
2533                         else if (strcmp(optarg, "inet6") == 0)
2534                                 preferred_family = AF_INET6;
2535                         else if (strcmp(optarg, "link") == 0)
2536                                 preferred_family = AF_PACKET;
2537                         else if (strcmp(optarg, "unix") == 0)
2538                                 preferred_family = AF_UNIX;
2539                         else if (strcmp(optarg, "netlink") == 0)
2540                                 preferred_family = AF_NETLINK;
2541                         else if (strcmp(optarg, "help") == 0)
2542                                 usage();
2543                         else {
2544                                 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
2545                                 usage();
2546                         }
2547                         break;
2548                 case 'A':
2549                 {
2550                         char *p, *p1;
2551                         if (!saw_query) {
2552                                 current_filter.dbs = 0;
2553                                 saw_query = 1;
2554                                 do_default = 0;
2555                         }
2556                         p = p1 = optarg;
2557                         do {
2558                                 if ((p1 = strchr(p, ',')) != NULL)
2559                                         *p1 = 0;
2560                                 if (strcmp(p, "all") == 0) {
2561                                         current_filter.dbs = ALL_DB;
2562                                 } else if (strcmp(p, "inet") == 0) {
2563                                         current_filter.dbs |= (1<<TCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
2564                                 } else if (strcmp(p, "udp") == 0) {
2565                                         current_filter.dbs |= (1<<UDP_DB);
2566                                 } else if (strcmp(p, "tcp") == 0) {
2567                                         current_filter.dbs |= (1<<TCP_DB);
2568                                 } else if (strcmp(p, "raw") == 0) {
2569                                         current_filter.dbs |= (1<<RAW_DB);
2570                                 } else if (strcmp(p, "unix") == 0) {
2571                                         current_filter.dbs |= UNIX_DBM;
2572                                 } else if (strcasecmp(p, "unix_stream") == 0 ||
2573                                            strcmp(p, "u_str") == 0) {
2574                                         current_filter.dbs |= (1<<UNIX_ST_DB);
2575                                 } else if (strcasecmp(p, "unix_dgram") == 0 ||
2576                                            strcmp(p, "u_dgr") == 0) {
2577                                         current_filter.dbs |= (1<<UNIX_DG_DB);
2578                                 } else if (strcmp(p, "packet") == 0) {
2579                                         current_filter.dbs |= PACKET_DBM;
2580                                 } else if (strcmp(p, "packet_raw") == 0 ||
2581                                            strcmp(p, "p_raw") == 0) {
2582                                         current_filter.dbs |= (1<<PACKET_R_DB);
2583                                 } else if (strcmp(p, "packet_dgram") == 0 ||
2584                                            strcmp(p, "p_dgr") == 0) {
2585                                         current_filter.dbs |= (1<<PACKET_DG_DB);
2586                                 } else if (strcmp(p, "netlink") == 0) {
2587                                         current_filter.dbs |= (1<<NETLINK_DB);
2588                                 } else {
2589                                         fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
2590                                         usage();
2591                                 }
2592                                 p = p1 + 1;
2593                         } while (p1);
2594                         break;
2595                 }
2596                 case 's':
2597                         do_summary = 1;
2598                         break;
2599                 case 'D':
2600                         dump_tcpdiag = optarg;
2601                         break;
2602                 case 'F':
2603                         if (filter_fp) {
2604                                 fprintf(stderr, "More than one filter file\n");
2605                                 exit(-1);
2606                         }
2607                         if (optarg[0] == '-')
2608                                 filter_fp = stdin;
2609                         else
2610                                 filter_fp = fopen(optarg, "r");
2611                         if (!filter_fp) {
2612                                 perror("fopen filter file");
2613                                 exit(-1);
2614                         }
2615                         break;
2616                 case 'v':
2617                 case 'V':
2618                         printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
2619                         exit(0);
2620                 case 'h':
2621                 case '?':
2622                 default:
2623                         usage();
2624                 }
2625         }
2626
2627         argc -= optind;
2628         argv += optind;
2629
2630         get_slabstat(&slabstat);
2631
2632         if (do_summary) {
2633                 print_summary();
2634                 if (do_default && argc == 0)
2635                         exit(0);
2636         }
2637
2638         if (do_default)
2639                 current_filter.dbs = default_filter.dbs;
2640
2641         if (preferred_family == AF_UNSPEC) {
2642                 if (!(current_filter.dbs&~UNIX_DBM))
2643                         preferred_family = AF_UNIX;
2644                 else if (!(current_filter.dbs&~PACKET_DBM))
2645                         preferred_family = AF_PACKET;
2646                 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
2647                         preferred_family = AF_NETLINK;
2648         }
2649
2650         if (preferred_family != AF_UNSPEC) {
2651                 int mask2;
2652                 if (preferred_family == AF_INET ||
2653                     preferred_family == AF_INET6) {
2654                         mask2= (1<<TCP_DB);
2655                         if (!do_default)
2656                                 mask2 = (1<<UDP_DB)|(1<<RAW_DB);
2657                 } else if (preferred_family == AF_PACKET) {
2658                         mask2 = PACKET_DBM;
2659                 } else if (preferred_family == AF_UNIX) {
2660                         mask2 = UNIX_DBM;
2661                 } else if (preferred_family == AF_NETLINK) {
2662                         mask2 = (1<<NETLINK_DB);
2663                 } else {
2664                         mask2 = 0;
2665                 }
2666
2667                 if (do_default)
2668                         current_filter.dbs = mask2;
2669                 else
2670                         current_filter.dbs &= mask2;
2671                 current_filter.families = (1<<preferred_family);
2672         } else {
2673                 if (!do_default)
2674                         current_filter.families = ~0;
2675                 else
2676                         current_filter.families = default_filter.families;
2677         }
2678         if (current_filter.dbs == 0) {
2679                 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
2680                 exit(0);
2681         }
2682         if (current_filter.families == 0) {
2683                 fprintf(stderr, "ss: no families to show with such filter.\n");
2684                 exit(0);
2685         }
2686
2687         if (resolve_services && resolve_hosts &&
2688             (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB))))
2689                 init_service_resolver();
2690
2691         /* Now parse filter... */
2692         if (argc == 0 && filter_fp) {
2693                 if (ssfilter_parse(&current_filter.f, 0, NULL, filter_fp))
2694                         usage();
2695         }
2696
2697         while (argc > 0) {
2698                 if (strcmp(*argv, "state") == 0) {
2699                         NEXT_ARG();
2700                         if (!saw_states)
2701                                 current_filter.states = 0;
2702                         current_filter.states |= scan_state(*argv);
2703                         saw_states = 1;
2704                 } else if (strcmp(*argv, "exclude") == 0 ||
2705                            strcmp(*argv, "excl") == 0) {
2706                         NEXT_ARG();
2707                         if (!saw_states)
2708                                 current_filter.states = SS_ALL;
2709                         current_filter.states &= ~scan_state(*argv);
2710                         saw_states = 1;
2711                 } else {
2712                         if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
2713                                 usage();
2714                         break;
2715                 }
2716                 argc--; argv++;
2717         }
2718
2719         if (current_filter.states == 0) {
2720                 fprintf(stderr, "ss: no socket states to show with such filter.\n");
2721                 exit(0);
2722         }
2723
2724         if (dump_tcpdiag) {
2725                 FILE *dump_fp = stdout;
2726                 if (!(current_filter.dbs & (1<<TCP_DB))) {
2727                         fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
2728                         exit(0);
2729                 }
2730                 if (dump_tcpdiag[0] != '-') {
2731                         dump_fp = fopen(dump_tcpdiag, "w");
2732                         if (!dump_tcpdiag) {
2733                                 perror("fopen dump file");
2734                                 exit(-1);
2735                         }
2736                 }
2737                 tcp_show_netlink(&current_filter, dump_fp);
2738                 fflush(dump_fp);
2739                 exit(0);
2740         }
2741
2742         netid_width = 0;
2743         if (current_filter.dbs&(current_filter.dbs-1))
2744                 netid_width = 5;
2745
2746         state_width = 0;
2747         if (current_filter.states&(current_filter.states-1))
2748                 state_width = 10;
2749
2750         screen_width = 80;
2751         if (isatty(STDOUT_FILENO)) {
2752                 struct winsize w;
2753
2754                 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
2755                         if (w.ws_col > 0)
2756                                 screen_width = w.ws_col;
2757                 }
2758         }
2759
2760         addrp_width = screen_width;
2761         addrp_width -= netid_width+1;
2762         addrp_width -= state_width+1;
2763         addrp_width -= 14;
2764
2765         if (addrp_width&1) {
2766                 if (netid_width)
2767                         netid_width++;
2768                 else if (state_width)
2769                         state_width++;
2770         }
2771
2772         addrp_width /= 2;
2773         addrp_width--;
2774
2775         serv_width = resolve_services ? 7 : 5;
2776
2777         if (addrp_width < 15+serv_width+1)
2778                 addrp_width = 15+serv_width+1;
2779
2780         addr_width = addrp_width - serv_width - 1;
2781
2782         if (netid_width)
2783                 printf("%-*s ", netid_width, "Netid");
2784         if (state_width)
2785                 printf("%-*s ", state_width, "State");
2786         printf("%-6s %-6s ", "Recv-Q", "Send-Q");
2787
2788         printf("%*s:%-*s %*s:%-*s\n",
2789                addr_width, "Local Address", serv_width, "Port",
2790                addr_width, "Peer Address", serv_width, "Port");
2791
2792 //printf("%08x %08x %08x\n", current_filter.dbs, current_filter.states, current_filter.families);
2793         fflush(stdout);
2794
2795         if (current_filter.dbs & (1<<NETLINK_DB))
2796                 netlink_show(&current_filter);
2797         if (current_filter.dbs & PACKET_DBM)
2798                 packet_show(&current_filter);
2799         if (current_filter.dbs & UNIX_DBM)
2800                 unix_show(&current_filter);
2801         if (current_filter.dbs & (1<<RAW_DB))
2802                 raw_show(&current_filter);
2803         if (current_filter.dbs & (1<<UDP_DB))
2804                 udp_show(&current_filter);
2805         if (current_filter.dbs & (1<<TCP_DB))
2806                 tcp_show(&current_filter);
2807         return 0;
2808 }