misc/ss.c

   1 /*
   2  * ss.c         "sockstat", socket statistics
   3  *
   4  *              This program is free software; you can redistribute it and/or
   5  *              modify it under the terms of the GNU General Public License
   6  *              as published by the Free Software Foundation; either version
   7  *              2 of the License, or (at your option) any later version.
   8  *
   9  * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  10  */
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <unistd.h>
  15 #include <syslog.h>
  16 #include <fcntl.h>
  17 #include <sys/ioctl.h>
  18 #include <sys/socket.h>
  19 #include <sys/uio.h>
  20 #include <netinet/in.h>
  21 #include <string.h>
  22 #include <errno.h>
  23 #include <netdb.h>
  24 #include <arpa/inet.h>
  25 #include <resolv.h>
  26 #include <dirent.h>
  27 #include <fnmatch.h>
  28 #include <getopt.h>
  29
  30 #include "utils.h"
  31 #include "rt_names.h"
  32 #include "ll_map.h"
  33 #include "libnetlink.h"
  34 #include "SNAPSHOT.h"
  35
  36 #include <netinet/tcp.h>
  37 #include <linux/inet_diag.h>
  38
  39 int resolve_hosts = 0;
  40 int resolve_services = 1;
  41 int preferred_family = AF_UNSPEC;
  42 int show_options = 0;
  43 int show_details = 0;
  44 int show_users = 0;
  45 int show_mem = 0;
  46 int show_tcpinfo = 0;
  47
  48 int netid_width;
  49 int state_width;
  50 int addrp_width;
  51 int addr_width;
  52 int serv_width;
  53 int screen_width;
  54
  55 static const char *TCP_PROTO = "tcp";
  56 static const char *UDP_PROTO = "udp";
  57 static const char *RAW_PROTO = "raw";
  58 static const char *dg_proto = NULL;
  59
  60 enum
  61 {
  62         TCP_DB,
  63         DCCP_DB,
  64         UDP_DB,
  65         RAW_DB,
  66         UNIX_DG_DB,
  67         UNIX_ST_DB,
  68         PACKET_DG_DB,
  69         PACKET_R_DB,
  70         NETLINK_DB,
  71         MAX_DB
  72 };
  73
  74 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
  75 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB))
  76 #define ALL_DB ((1<<MAX_DB)-1)
  77
  78 enum {
  79         SS_UNKNOWN,
  80         SS_ESTABLISHED,
  81         SS_SYN_SENT,
  82         SS_SYN_RECV,
  83         SS_FIN_WAIT1,
  84         SS_FIN_WAIT2,
  85         SS_TIME_WAIT,
  86         SS_CLOSE,
  87         SS_CLOSE_WAIT,
  88         SS_LAST_ACK,
  89         SS_LISTEN,
  90         SS_CLOSING,
  91         SS_MAX
  92 };
  93
  94 #define SS_ALL ((1<<SS_MAX)-1)
  95
  96 #include "ssfilter.h"
  97
  98 struct filter
  99 {
 100         int dbs;
 101         int states;
 102         int families;
 103         struct ssfilter *f;
 104 };
 105
 106 struct filter default_filter = {
 107         .dbs    =  (1<<TCP_DB),
 108         .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
 109         .families= (1<<AF_INET)|(1<<AF_INET6),
 110 };
 111
 112 struct filter current_filter;
 113
 114 static FILE *generic_proc_open(const char *env, const char *name)
 115 {
 116         const char *p = getenv(env);
 117         char store[128];
 118
 119         if (!p) {
 120                 p = getenv("PROC_ROOT") ? : "/proc";
 121                 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
 122                 p = store;
 123         }
 124
 125         return fopen(p, "r");
 126 }
 127
 128 static FILE *net_tcp_open(void)
 129 {
 130         return generic_proc_open("PROC_NET_TCP", "net/tcp");
 131 }
 132
 133 static FILE *net_tcp6_open(void)
 134 {
 135         return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
 136 }
 137
 138 static FILE *net_udp_open(void)
 139 {
 140         return generic_proc_open("PROC_NET_UDP", "net/udp");
 141 }
 142
 143 static FILE *net_udp6_open(void)
 144 {
 145         return generic_proc_open("PROC_NET_UDP6", "net/udp6");
 146 }
 147
 148 static FILE *net_raw_open(void)
 149 {
 150         return generic_proc_open("PROC_NET_RAW", "net/raw");
 151 }
 152
 153 static FILE *net_raw6_open(void)
 154 {
 155         return generic_proc_open("PROC_NET_RAW6", "net/raw6");
 156 }
 157
 158 static FILE *net_unix_open(void)
 159 {
 160         return generic_proc_open("PROC_NET_UNIX", "net/unix");
 161 }
 162
 163 static FILE *net_packet_open(void)
 164 {
 165         return generic_proc_open("PROC_NET_PACKET", "net/packet");
 166 }
 167
 168 static FILE *net_netlink_open(void)
 169 {
 170         return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
 171 }
 172
 173 static FILE *slabinfo_open(void)
 174 {
 175         return generic_proc_open("PROC_SLABINFO", "slabinfo");
 176 }
 177
 178 static FILE *net_sockstat_open(void)
 179 {
 180         return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
 181 }
 182
 183 static FILE *net_sockstat6_open(void)
 184 {
 185         return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
 186 }
 187
 188 static FILE *net_snmp_open(void)
 189 {
 190         return generic_proc_open("PROC_NET_SNMP", "net/snmp");
 191 }
 192
 193 static FILE *ephemeral_ports_open(void)
 194 {
 195         return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
 196 }
 197
 198 struct user_ent {
 199         struct user_ent *next;
 200         unsigned int    ino;
 201         int             pid;
 202         int             fd;
 203         char            process[0];
 204 };
 205
 206 #define USER_ENT_HASH_SIZE      256
 207 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
 208
 209 static int user_ent_hashfn(unsigned int ino)
 210 {
 211         int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
 212
 213         return val & (USER_ENT_HASH_SIZE - 1);
 214 }
 215
 216 static void user_ent_add(unsigned int ino, const char *process, int pid, int fd)
 217 {
 218         struct user_ent *p, **pp;
 219         int str_len;
 220
 221         str_len = strlen(process) + 1;
 222         p = malloc(sizeof(struct user_ent) + str_len);
 223         if (!p)
 224                 abort();
 225         p->next = NULL;
 226         p->ino = ino;
 227         p->pid = pid;
 228         p->fd = fd;
 229         strcpy(p->process, process);
 230
 231         pp = &user_ent_hash[user_ent_hashfn(ino)];
 232         p->next = *pp;
 233         *pp = p;
 234 }
 235
 236 static void user_ent_hash_build(void)
 237 {
 238         const char *root = getenv("PROC_ROOT") ? : "/proc/";
 239         struct dirent *d;
 240         char name[1024];
 241         int nameoff;
 242         DIR *dir;
 243
 244         strcpy(name, root);
 245         if (strlen(name) == 0 || name[strlen(name)-1] != '/')
 246                 strcat(name, "/");
 247
 248         nameoff = strlen(name);
 249
 250         dir = opendir(name);
 251         if (!dir)
 252                 return;
 253
 254         while ((d = readdir(dir)) != NULL) {
 255                 struct dirent *d1;
 256                 char process[16];
 257                 int pid, pos;
 258                 DIR *dir1;
 259                 char crap;
 260
 261                 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
 262                         continue;
 263
 264                 sprintf(name + nameoff, "%d/fd/", pid);
 265                 pos = strlen(name);
 266                 if ((dir1 = opendir(name)) == NULL)
 267                         continue;
 268
 269                 process[0] = '\0';
 270
 271                 while ((d1 = readdir(dir1)) != NULL) {
 272                         const char *pattern = "socket:[";
 273                         unsigned int ino;
 274                         char lnk[64];
 275                         int fd, n;
 276
 277                         if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
 278                                 continue;
 279
 280                         sprintf(name+pos, "%d", fd);
 281                         n = readlink(name, lnk, sizeof(lnk)-1);
 282                         if (strncmp(lnk, pattern, strlen(pattern)))
 283                                 continue;
 284
 285                         sscanf(lnk, "socket:[%u]", &ino);
 286
 287                         if (process[0] == '\0') {
 288                                 char tmp[1024];
 289                                 FILE *fp;
 290
 291                                 snprintf(tmp, sizeof(tmp), "%s/%d/stat", root, pid);
 292                                 if ((fp = fopen(tmp, "r")) != NULL) {
 293                                         fscanf(fp, "%*d (%[^)])", process);
 294                                         fclose(fp);
 295                                 }
 296                         }
 297
 298                         user_ent_add(ino, process, pid, fd);
 299                 }
 300                 closedir(dir1);
 301         }
 302         closedir(dir);
 303 }
 304
 305 int find_users(unsigned ino, char *buf, int buflen)
 306 {
 307         struct user_ent *p;
 308         int cnt = 0;
 309         char *ptr;
 310
 311         if (!ino)
 312                 return 0;
 313
 314         p = user_ent_hash[user_ent_hashfn(ino)];
 315         ptr = buf;
 316         while (p) {
 317                 if (p->ino != ino)
 318                         goto next;
 319
 320                 if (ptr - buf >= buflen - 1)
 321                         break;
 322
 323                 snprintf(ptr, buflen - (ptr - buf),
 324                          "(\"%s\",%d,%d),",
 325                          p->process, p->pid, p->fd);
 326                 ptr += strlen(ptr);
 327                 cnt++;
 328
 329         next:
 330                 p = p->next;
 331         }
 332
 333         if (ptr != buf)
 334                 ptr[-1] = '\0';
 335
 336         return cnt;
 337 }
 338
 339 /* Get stats from slab */
 340
 341 struct slabstat
 342 {
 343         int socks;
 344         int tcp_ports;
 345         int tcp_tws;
 346         int tcp_syns;
 347         int skbs;
 348 };
 349
 350 struct slabstat slabstat;
 351
 352 static const char *slabstat_ids[] =
 353 {
 354         "sock",
 355         "tcp_bind_bucket",
 356         "tcp_tw_bucket",
 357         "tcp_open_request",
 358         "skbuff_head_cache",
 359 };
 360
 361 int get_slabstat(struct slabstat *s)
 362 {
 363         char buf[256];
 364         FILE *fp;
 365         int cnt;
 366
 367         memset(s, 0, sizeof(*s));
 368
 369         fp = slabinfo_open();
 370         if (!fp)
 371                 return -1;
 372
 373         cnt = sizeof(*s)/sizeof(int);
 374
 375         fgets(buf, sizeof(buf), fp);
 376         while(fgets(buf, sizeof(buf), fp) != NULL) {
 377                 int i;
 378                 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
 379                         if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
 380                                 sscanf(buf, "%*s%d", ((int *)s) + i);
 381                                 cnt--;
 382                                 break;
 383                         }
 384                 }
 385                 if (cnt <= 0)
 386                         break;
 387         }
 388
 389         fclose(fp);
 390         return 0;
 391 }
 392
 393 static const char *sstate_name[] = {
 394         "UNKNOWN",
 395         [TCP_ESTABLISHED] = "ESTAB",
 396         [TCP_SYN_SENT] = "SYN-SENT",
 397         [TCP_SYN_RECV] = "SYN-RECV",
 398         [TCP_FIN_WAIT1] = "FIN-WAIT-1",
 399         [TCP_FIN_WAIT2] = "FIN-WAIT-2",
 400         [TCP_TIME_WAIT] = "TIME-WAIT",
 401         [TCP_CLOSE] = "UNCONN",
 402         [TCP_CLOSE_WAIT] = "CLOSE-WAIT",
 403         [TCP_LAST_ACK] = "LAST-ACK",
 404         [TCP_LISTEN] =  "LISTEN",
 405         [TCP_CLOSING] = "CLOSING",
 406 };
 407
 408 static const char *sstate_namel[] = {
 409         "UNKNOWN",
 410         [TCP_ESTABLISHED] = "established",
 411         [TCP_SYN_SENT] = "syn-sent",
 412         [TCP_SYN_RECV] = "syn-recv",
 413         [TCP_FIN_WAIT1] = "fin-wait-1",
 414         [TCP_FIN_WAIT2] = "fin-wait-2",
 415         [TCP_TIME_WAIT] = "time-wait",
 416         [TCP_CLOSE] = "unconnected",
 417         [TCP_CLOSE_WAIT] = "close-wait",
 418         [TCP_LAST_ACK] = "last-ack",
 419         [TCP_LISTEN] =  "listening",
 420         [TCP_CLOSING] = "closing",
 421 };
 422
 423 struct tcpstat
 424 {
 425         inet_prefix     local;
 426         inet_prefix     remote;
 427         int             lport;
 428         int             rport;
 429         int             state;
 430         int             rq, wq;
 431         int             timer;
 432         int             timeout;
 433         int             retrs;
 434         unsigned        ino;
 435         int             probes;
 436         unsigned        uid;
 437         int             refcnt;
 438         unsigned long long sk;
 439         int             rto, ato, qack, cwnd, ssthresh;
 440 };
 441
 442 static const char *tmr_name[] = {
 443         "off",
 444         "on",
 445         "keepalive",
 446         "timewait",
 447         "persist",
 448         "unknown"
 449 };
 450
 451 const char *print_ms_timer(int timeout)
 452 {
 453         static char buf[64];
 454         int secs, msecs, minutes;
 455         if (timeout < 0)
 456                 timeout = 0;
 457         secs = timeout/1000;
 458         minutes = secs/60;
 459         secs = secs%60;
 460         msecs = timeout%1000;
 461         buf[0] = 0;
 462         if (minutes) {
 463                 msecs = 0;
 464                 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
 465                 if (minutes > 9)
 466                         secs = 0;
 467         }
 468         if (secs) {
 469                 if (secs > 9)
 470                         msecs = 0;
 471                 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
 472         }
 473         if (msecs)
 474                 sprintf(buf+strlen(buf), "%03dms", msecs);
 475         return buf;
 476 }
 477
 478 const char *print_hz_timer(int timeout)
 479 {
 480         int hz = get_user_hz();
 481         return print_ms_timer(((timeout*1000) + hz-1)/hz);
 482 }
 483
 484 struct scache
 485 {
 486         struct scache *next;
 487         int port;
 488         char *name;
 489         const char *proto;
 490 };
 491
 492 struct scache *rlist;
 493
 494 void init_service_resolver(void)
 495 {
 496         char buf[128];
 497         FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
 498         if (fp) {
 499                 fgets(buf, sizeof(buf), fp);
 500                 while (fgets(buf, sizeof(buf), fp) != NULL) {
 501                         unsigned int progn, port;
 502                         char proto[128], prog[128];
 503                         if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
 504                                    &port, prog+4) == 4) {
 505                                 struct scache *c = malloc(sizeof(*c));
 506                                 if (c) {
 507                                         c->port = port;
 508                                         memcpy(prog, "rpc.", 4);
 509                                         c->name = strdup(prog);
 510                                         if (strcmp(proto, TCP_PROTO) == 0)
 511                                                 c->proto = TCP_PROTO;
 512                                         else if (strcmp(proto, UDP_PROTO) == 0)
 513                                                 c->proto = UDP_PROTO;
 514                                         else
 515                                                 c->proto = NULL;
 516                                         c->next = rlist;
 517                                         rlist = c;
 518                                 }
 519                         }
 520                 }
 521         }
 522 }
 523
 524 static int ip_local_port_min, ip_local_port_max;
 525
 526 /* Even do not try default linux ephemeral port ranges:
 527  * default /etc/services contains so much of useless crap
 528  * wouldbe "allocated" to this area that resolution
 529  * is really harmful. I shrug each time when seeing
 530  * "socks" or "cfinger" in dumps.
 531  */
 532 static int is_ephemeral(int port)
 533 {
 534         if (!ip_local_port_min) {
 535                 FILE *f = ephemeral_ports_open();
 536                 if (f) {
 537                         fscanf(f, "%d %d",
 538                                &ip_local_port_min, &ip_local_port_max);
 539                         fclose(f);
 540                 } else {
 541                         ip_local_port_min = 1024;
 542                         ip_local_port_max = 4999;
 543                 }
 544         }
 545
 546         return (port >= ip_local_port_min && port<= ip_local_port_max);
 547 }
 548
 549
 550 const char *__resolve_service(int port)
 551 {
 552         struct scache *c;
 553
 554         for (c = rlist; c; c = c->next) {
 555                 if (c->port == port && c->proto == dg_proto)
 556                         return c->name;
 557         }
 558
 559         if (!is_ephemeral(port)) {
 560                 static int notfirst;
 561                 struct servent *se;
 562                 if (!notfirst) {
 563                         setservent(1);
 564                         notfirst = 1;
 565                 }
 566                 se = getservbyport(htons(port), dg_proto);
 567                 if (se)
 568                         return se->s_name;
 569         }
 570
 571         return NULL;
 572 }
 573
 574
 575 const char *resolve_service(int port)
 576 {
 577         static char buf[128];
 578         static struct scache cache[256];
 579
 580         if (port == 0) {
 581                 buf[0] = '*';
 582                 buf[1] = 0;
 583                 return buf;
 584         }
 585
 586         if (resolve_services) {
 587                 if (dg_proto == RAW_PROTO) {
 588                         return inet_proto_n2a(port, buf, sizeof(buf));
 589                 } else {
 590                         struct scache *c;
 591                         const char *res;
 592                         int hash = (port^(((unsigned long)dg_proto)>>2))&255;
 593
 594                         for (c = &cache[hash]; c; c = c->next) {
 595                                 if (c->port == port &&
 596                                     c->proto == dg_proto) {
 597                                         if (c->name)
 598                                                 return c->name;
 599                                         goto do_numeric;
 600                                 }
 601                         }
 602
 603                         if ((res = __resolve_service(port)) != NULL) {
 604                                 if ((c = malloc(sizeof(*c))) == NULL)
 605                                         goto do_numeric;
 606                         } else {
 607                                 c = &cache[hash];
 608                                 if (c->name)
 609                                         free(c->name);
 610                         }
 611                         c->port = port;
 612                         c->name = NULL;
 613                         c->proto = dg_proto;
 614                         if (res) {
 615                                 c->name = strdup(res);
 616                                 c->next = cache[hash].next;
 617                                 cache[hash].next = c;
 618                         }
 619                         if (c->name)
 620                                 return c->name;
 621                 }
 622         }
 623
 624         do_numeric:
 625         sprintf(buf, "%u", port);
 626         return buf;
 627 }
 628
 629 void formatted_print(const inet_prefix *a, int port)
 630 {
 631         char buf[1024];
 632         const char *ap = buf;
 633         int est_len;
 634
 635         est_len = addr_width;
 636
 637         if (a->family == AF_INET) {
 638                 if (a->data[0] == 0) {
 639                         buf[0] = '*';
 640                         buf[1] = 0;
 641                 } else {
 642                         ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
 643                 }
 644         } else {
 645                 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
 646                 est_len = strlen(ap);
 647                 if (est_len <= addr_width)
 648                         est_len = addr_width;
 649                 else
 650                         est_len = addr_width + ((est_len-addr_width+3)/4)*4;
 651         }
 652         printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
 653 }
 654
 655 struct aafilter
 656 {
 657         inet_prefix     addr;
 658         int             port;
 659         struct aafilter *next;
 660 };
 661
 662 int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, int plen)
 663 {
 664         if (!inet_addr_match(a, p, plen))
 665                 return 0;
 666
 667         /* Cursed "v4 mapped" addresses: v4 mapped socket matches
 668          * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
 669          * sockets. Fair? */
 670         if (p->family == AF_INET && a->family == AF_INET6) {
 671                 if (a->data[0] == 0 && a->data[1] == 0 &&
 672                     a->data[2] == htonl(0xffff)) {
 673                         inet_prefix tmp = *a;
 674                         tmp.data[0] = a->data[3];
 675                         return inet_addr_match(&tmp, p, plen);
 676                 }
 677         }
 678         return 1;
 679 }
 680
 681 int unix_match(const inet_prefix *a, const inet_prefix *p)
 682 {
 683         char *addr, *pattern;
 684         memcpy(&addr, a->data, sizeof(addr));
 685         memcpy(&pattern, p->data, sizeof(pattern));
 686         if (pattern == NULL)
 687                 return 1;
 688         if (addr == NULL)
 689                 addr = "";
 690         return !fnmatch(pattern, addr, 0);
 691 }
 692
 693 int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
 694 {
 695         switch (f->type) {
 696                 case SSF_S_AUTO:
 697         {
 698                 static int low, high=65535;
 699
 700                 if (s->local.family == AF_UNIX) {
 701                         char *p;
 702                         memcpy(&p, s->local.data, sizeof(p));
 703                         return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
 704                                              strspn(p+1, "0123456789abcdef") == 5);
 705                 }
 706                 if (s->local.family == AF_PACKET)
 707                         return s->lport == 0 && s->local.data == 0;
 708                 if (s->local.family == AF_NETLINK)
 709                         return s->lport < 0;
 710
 711                 if (!low) {
 712                         FILE *fp = ephemeral_ports_open();
 713                         if (fp) {
 714                                 fscanf(fp, "%d%d", &low, &high);
 715                                 fclose(fp);
 716                         }
 717                 }
 718                 return s->lport >= low && s->lport <= high;
 719         }
 720                 case SSF_DCOND:
 721         {
 722                 struct aafilter *a = (void*)f->pred;
 723                 if (a->addr.family == AF_UNIX)
 724                         return unix_match(&s->remote, &a->addr);
 725                 if (a->port != -1 && a->port != s->rport)
 726                         return 0;
 727                 if (a->addr.bitlen) {
 728                         do {
 729                                 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
 730                                         return 1;
 731                         } while ((a = a->next) != NULL);
 732                         return 0;
 733                 }
 734                 return 1;
 735         }
 736                 case SSF_SCOND:
 737         {
 738                 struct aafilter *a = (void*)f->pred;
 739                 if (a->addr.family == AF_UNIX)
 740                         return unix_match(&s->local, &a->addr);
 741                 if (a->port != -1 && a->port != s->lport)
 742                         return 0;
 743                 if (a->addr.bitlen) {
 744                         do {
 745                                 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
 746                                         return 1;
 747                         } while ((a = a->next) != NULL);
 748                         return 0;
 749                 }
 750                 return 1;
 751         }
 752                 case SSF_D_GE:
 753         {
 754                 struct aafilter *a = (void*)f->pred;
 755                 return s->rport >= a->port;
 756         }
 757                 case SSF_D_LE:
 758         {
 759                 struct aafilter *a = (void*)f->pred;
 760                 return s->rport <= a->port;
 761         }
 762                 case SSF_S_GE:
 763         {
 764                 struct aafilter *a = (void*)f->pred;
 765                 return s->lport >= a->port;
 766         }
 767                 case SSF_S_LE:
 768         {
 769                 struct aafilter *a = (void*)f->pred;
 770                 return s->lport <= a->port;
 771         }
 772
 773                 /* Yup. It is recursion. Sorry. */
 774                 case SSF_AND:
 775                 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
 776                 case SSF_OR:
 777                 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
 778                 case SSF_NOT:
 779                 return !run_ssfilter(f->pred, s);
 780                 default:
 781                 abort();
 782         }
 783 }
 784
 785 /* Relocate external jumps by reloc. */
 786 static void ssfilter_patch(char *a, int len, int reloc)
 787 {
 788         while (len > 0) {
 789                 struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a;
 790                 if (op->no == len+4)
 791                         op->no += reloc;
 792                 len -= op->yes;
 793                 a += op->yes;
 794         }
 795         if (len < 0)
 796                 abort();
 797 }
 798
 799 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
 800 {
 801         switch (f->type) {
 802                 case SSF_S_AUTO:
 803         {
 804                 if (!(*bytecode=malloc(4))) abort();
 805                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
 806                 return 8;
 807         }
 808                 case SSF_DCOND:
 809                 case SSF_SCOND:
 810         {
 811                 struct aafilter *a = (void*)f->pred;
 812                 struct aafilter *b;
 813                 char *ptr;
 814                 int  code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
 815                 int len = 0;
 816
 817                 for (b=a; b; b=b->next) {
 818                         len += 4 + sizeof(struct inet_diag_hostcond);
 819                         if (a->addr.family == AF_INET6)
 820                                 len += 16;
 821                         else
 822                                 len += 4;
 823                         if (b->next)
 824                                 len += 4;
 825                 }
 826                 if (!(ptr = malloc(len))) abort();
 827                 *bytecode = ptr;
 828                 for (b=a; b; b=b->next) {
 829                         struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
 830                         int alen = (a->addr.family == AF_INET6 ? 16 : 4);
 831                         int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
 832                         struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4);
 833
 834                         *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
 835                         cond->family = a->addr.family;
 836                         cond->port = a->port;
 837                         cond->prefix_len = a->addr.bitlen;
 838                         memcpy(cond->addr, a->addr.data, alen);
 839                         ptr += oplen;
 840                         if (b->next) {
 841                                 op = (struct inet_diag_bc_op *)ptr;
 842                                 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
 843                                 ptr += 4;
 844                         }
 845                 }
 846                 return ptr - *bytecode;
 847         }
 848                 case SSF_D_GE:
 849         {
 850                 struct aafilter *x = (void*)f->pred;
 851                 if (!(*bytecode=malloc(8))) abort();
 852                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
 853                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 854                 return 8;
 855         }
 856                 case SSF_D_LE:
 857         {
 858                 struct aafilter *x = (void*)f->pred;
 859                 if (!(*bytecode=malloc(8))) abort();
 860                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
 861                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 862                 return 8;
 863         }
 864                 case SSF_S_GE:
 865         {
 866                 struct aafilter *x = (void*)f->pred;
 867                 if (!(*bytecode=malloc(8))) abort();
 868                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
 869                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 870                 return 8;
 871         }
 872                 case SSF_S_LE:
 873         {
 874                 struct aafilter *x = (void*)f->pred;
 875                 if (!(*bytecode=malloc(8))) abort();
 876                 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
 877                 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
 878                 return 8;
 879         }
 880
 881                 case SSF_AND:
 882         {
 883                 char *a1, *a2, *a, l1, l2;
 884                 l1 = ssfilter_bytecompile(f->pred, &a1);
 885                 l2 = ssfilter_bytecompile(f->post, &a2);
 886                 if (!(a = malloc(l1+l2))) abort();
 887                 memcpy(a, a1, l1);
 888                 memcpy(a+l1, a2, l2);
 889                 free(a1); free(a2);
 890                 ssfilter_patch(a, l1, l2);
 891                 *bytecode = a;
 892                 return l1+l2;
 893         }
 894                 case SSF_OR:
 895         {
 896                 char *a1, *a2, *a, l1, l2;
 897                 l1 = ssfilter_bytecompile(f->pred, &a1);
 898                 l2 = ssfilter_bytecompile(f->post, &a2);
 899                 if (!(a = malloc(l1+l2+4))) abort();
 900                 memcpy(a, a1, l1);
 901                 memcpy(a+l1+4, a2, l2);
 902                 free(a1); free(a2);
 903                 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
 904                 *bytecode = a;
 905                 return l1+l2+4;
 906         }
 907                 case SSF_NOT:
 908         {
 909                 char *a1, *a, l1;
 910                 l1 = ssfilter_bytecompile(f->pred, &a1);
 911                 if (!(a = malloc(l1+4))) abort();
 912                 memcpy(a, a1, l1);
 913                 free(a1);
 914                 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
 915                 *bytecode = a;
 916                 return l1+4;
 917         }
 918                 default:
 919                 abort();
 920         }
 921 }
 922
 923 static int remember_he(struct aafilter *a, struct hostent *he)
 924 {
 925         char **ptr = he->h_addr_list;
 926         int cnt = 0;
 927         int len;
 928
 929         if (he->h_addrtype == AF_INET)
 930                 len = 4;
 931         else if (he->h_addrtype == AF_INET6)
 932                 len = 16;
 933         else
 934                 return 0;
 935
 936         while (*ptr) {
 937                 struct aafilter *b = a;
 938                 if (a->addr.bitlen) {
 939                         if ((b = malloc(sizeof(*b))) == NULL)
 940                                 return cnt;
 941                         *b = *a;
 942                         b->next = a->next;
 943                         a->next = b;
 944                 }
 945                 memcpy(b->addr.data, *ptr, len);
 946                 b->addr.bytelen = len;
 947                 b->addr.bitlen = len*8;
 948                 b->addr.family = he->h_addrtype;
 949                 ptr++;
 950                 cnt++;
 951         }
 952         return cnt;
 953 }
 954
 955 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
 956 {
 957         static int notfirst;
 958         int cnt = 0;
 959         struct hostent *he;
 960
 961         a->addr.bitlen = 0;
 962         if (!notfirst) {
 963                 sethostent(1);
 964                 notfirst = 1;
 965         }
 966         he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
 967         if (he)
 968                 cnt = remember_he(a, he);
 969         if (fam == AF_UNSPEC) {
 970                 he = gethostbyname2(addr, AF_INET6);
 971                 if (he)
 972                         cnt += remember_he(a, he);
 973         }
 974         return !cnt;
 975 }
 976
 977 static int xll_initted = 0;
 978
 979 static void xll_init(void)
 980 {
 981         struct rtnl_handle rth;
 982         rtnl_open(&rth, 0);
 983         ll_init_map(&rth);
 984         rtnl_close(&rth);
 985         xll_initted = 1;
 986 }
 987
 988 static const char *xll_index_to_name(int index)
 989 {
 990         if (!xll_initted)
 991                 xll_init();
 992         return ll_index_to_name(index);
 993 }
 994
 995 static int xll_name_to_index(const char *dev)
 996 {
 997         if (!xll_initted)
 998                 xll_init();
 999         return ll_name_to_index(dev);
1000 }
1001
1002 void *parse_hostcond(char *addr)
1003 {
1004         char *port = NULL;
1005         struct aafilter a;
1006         struct aafilter *res;
1007         int fam = preferred_family;
1008
1009         memset(&a, 0, sizeof(a));
1010         a.port = -1;
1011
1012         if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1013                 char *p;
1014                 a.addr.family = AF_UNIX;
1015                 if (strncmp(addr, "unix:", 5) == 0)
1016                         addr+=5;
1017                 p = strdup(addr);
1018                 a.addr.bitlen = 8*strlen(p);
1019                 memcpy(a.addr.data, &p, sizeof(p));
1020                 goto out;
1021         }
1022
1023         if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1024                 a.addr.family = AF_PACKET;
1025                 a.addr.bitlen = 0;
1026                 if (strncmp(addr, "link:", 5) == 0)
1027                         addr+=5;
1028                 port = strchr(addr, ':');
1029                 if (port) {
1030                         *port = 0;
1031                         if (port[1] && strcmp(port+1, "*")) {
1032                                 if (get_integer(&a.port, port+1, 0)) {
1033                                         if ((a.port = xll_name_to_index(port+1)) <= 0)
1034                                                 return NULL;
1035                                 }
1036                         }
1037                 }
1038                 if (addr[0] && strcmp(addr, "*")) {
1039                         unsigned short tmp;
1040                         a.addr.bitlen = 32;
1041                         if (ll_proto_a2n(&tmp, addr))
1042                                 return NULL;
1043                         a.addr.data[0] = ntohs(tmp);
1044                 }
1045                 goto out;
1046         }
1047
1048         if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1049                 a.addr.family = AF_NETLINK;
1050                 a.addr.bitlen = 0;
1051                 if (strncmp(addr, "netlink:", 8) == 0)
1052                         addr+=8;
1053                 port = strchr(addr, ':');
1054                 if (port) {
1055                         *port = 0;
1056                         if (port[1] && strcmp(port+1, "*")) {
1057                                 if (get_integer(&a.port, port+1, 0)) {
1058                                         if (strcmp(port+1, "kernel") == 0)
1059                                                 a.port = 0;
1060                                         else
1061                                                 return NULL;
1062                                 }
1063                         }
1064                 }
1065                 if (addr[0] && strcmp(addr, "*")) {
1066                         a.addr.bitlen = 32;
1067                         if (get_u32(a.addr.data, addr, 0)) {
1068                                 if (strcmp(addr, "rtnl") == 0)
1069                                         a.addr.data[0] = 0;
1070                                 else if (strcmp(addr, "fw") == 0)
1071                                         a.addr.data[0] = 3;
1072                                 else if (strcmp(addr, "tcpdiag") == 0)
1073                                         a.addr.data[0] = 4;
1074                                 else
1075                                         return NULL;
1076                         }
1077                 }
1078                 goto out;
1079         }
1080
1081         if (strncmp(addr, "inet:", 5) == 0) {
1082                 addr += 5;
1083                 fam = AF_INET;
1084         } else if (strncmp(addr, "inet6:", 6) == 0) {
1085                 addr += 6;
1086                 fam = AF_INET6;
1087         }
1088
1089         /* URL-like literal [] */
1090         if (addr[0] == '[') {
1091                 addr++;
1092                 if ((port = strchr(addr, ']')) == NULL)
1093                         return NULL;
1094                 *port++ = 0;
1095         } else if (addr[0] == '*') {
1096                 port = addr+1;
1097         } else {
1098                 port = strrchr(strchr(addr, '/') ? : addr, ':');
1099         }
1100         if (port && *port) {
1101                 if (*port != ':')
1102                         return NULL;
1103                 *port++ = 0;
1104                 if (*port && *port != '*') {
1105                         if (get_integer(&a.port, port, 0)) {
1106                                 struct servent *se1 = NULL;
1107                                 struct servent *se2 = NULL;
1108                                 if (current_filter.dbs&(1<<UDP_DB))
1109                                         se1 = getservbyname(port, UDP_PROTO);
1110                                 if (current_filter.dbs&(1<<TCP_DB))
1111                                         se2 = getservbyname(port, TCP_PROTO);
1112                                 if (se1 && se2 && se1->s_port != se2->s_port) {
1113                                         fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1114                                         return NULL;
1115                                 }
1116                                 if (!se1)
1117                                         se1 = se2;
1118                                 if (se1) {
1119                                         a.port = ntohs(se1->s_port);
1120                                 } else {
1121                                         struct scache *s;
1122                                         for (s = rlist; s; s = s->next) {
1123                                                 if ((s->proto == UDP_PROTO &&
1124                                                      (current_filter.dbs&(1<<UDP_DB))) ||
1125                                                     (s->proto == TCP_PROTO &&
1126                                                      (current_filter.dbs&(1<<TCP_DB)))) {
1127                                                         if (s->name && strcmp(s->name, port) == 0) {
1128                                                                 if (a.port > 0 && a.port != s->port) {
1129                                                                         fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1130                                                                         return NULL;
1131                                                                 }
1132                                                                 a.port = s->port;
1133                                                         }
1134                                                 }
1135                                         }
1136                                         if (a.port <= 0) {
1137                                                 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1138                                                 return NULL;
1139                                         }
1140                                 }
1141                         }
1142                 }
1143         }
1144         if (addr && *addr && *addr != '*') {
1145                 if (get_prefix_1(&a.addr, addr, fam)) {
1146                         if (get_dns_host(&a, addr, fam)) {
1147                                 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1148                                 return NULL;
1149                         }
1150                 }
1151         }
1152
1153         out:
1154         res = malloc(sizeof(*res));
1155         if (res)
1156                 memcpy(res, &a, sizeof(a));
1157         return res;
1158 }
1159
1160 static int tcp_show_line(char *line, const struct filter *f, int family)
1161 {
1162         struct tcpstat s;
1163         char *loc, *rem, *data;
1164         char opt[256];
1165         int n;
1166         char *p;
1167
1168         if ((p = strchr(line, ':')) == NULL)
1169                 return -1;
1170         loc = p+2;
1171
1172         if ((p = strchr(loc, ':')) == NULL)
1173                 return -1;
1174         p[5] = 0;
1175         rem = p+6;
1176
1177         if ((p = strchr(rem, ':')) == NULL)
1178                 return -1;
1179         p[5] = 0;
1180         data = p+6;
1181
1182         do {
1183                 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1184
1185                 if (!(f->states & (1<<state)))
1186                         return 0;
1187         } while (0);
1188
1189         s.local.family = s.remote.family = family;
1190         if (family == AF_INET) {
1191                 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1192                 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1193                 s.local.bytelen = s.remote.bytelen = 4;
1194         } else {
1195                 sscanf(loc, "%08x%08x%08x%08x:%x",
1196                        s.local.data,
1197                        s.local.data+1,
1198                        s.local.data+2,
1199                        s.local.data+3,
1200                        &s.lport);
1201                 sscanf(rem, "%08x%08x%08x%08x:%x",
1202                        s.remote.data,
1203                        s.remote.data+1,
1204                        s.remote.data+2,
1205                        s.remote.data+3,
1206                        &s.rport);
1207                 s.local.bytelen = s.remote.bytelen = 16;
1208         }
1209
1210         if (f->f && run_ssfilter(f->f, &s) == 0)
1211                 return 0;
1212
1213         opt[0] = 0;
1214         n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n",
1215                    &s.state, &s.wq, &s.rq,
1216                    &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1217                    &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1218                    &s.cwnd, &s.ssthresh, opt);
1219
1220         if (n < 17)
1221                 opt[0] = 0;
1222
1223         if (n < 12) {
1224                 s.rto = 0;
1225                 s.cwnd = 2;
1226                 s.ssthresh = -1;
1227                 s.ato = s.qack = 0;
1228         }
1229
1230         if (netid_width)
1231                 printf("%-*s ", netid_width, "tcp");
1232         if (state_width)
1233                 printf("%-*s ", state_width, sstate_name[s.state]);
1234
1235         printf("%-6d %-6d ", s.rq, s.wq);
1236
1237         formatted_print(&s.local, s.lport);
1238         formatted_print(&s.remote, s.rport);
1239
1240         if (show_options) {
1241                 if (s.timer) {
1242                         if (s.timer > 4)
1243                                 s.timer = 5;
1244                         printf(" timer:(%s,%s,%d)",
1245                                tmr_name[s.timer],
1246                                print_hz_timer(s.timeout),
1247                                s.timer != 1 ? s.probes : s.retrs);
1248                 }
1249         }
1250         if (show_tcpinfo) {
1251                 int hz = get_user_hz();
1252                 if (s.rto && s.rto != 3*hz)
1253                         printf(" rto:%g", (double)s.rto/hz);
1254                 if (s.ato)
1255                         printf(" ato:%g", (double)s.ato/hz);
1256                 if (s.cwnd != 2)
1257                         printf(" cwnd:%d", s.cwnd);
1258                 if (s.ssthresh != -1)
1259                         printf(" ssthresh:%d", s.ssthresh);
1260                 if (s.qack/2)
1261                         printf(" qack:%d", s.qack/2);
1262                 if (s.qack&1)
1263                         printf(" bidir");
1264         }
1265         if (show_users) {
1266                 char ubuf[4096];
1267                 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1268                         printf(" users:(%s)", ubuf);
1269         }
1270         if (show_details) {
1271                 if (s.uid)
1272                         printf(" uid:%u", (unsigned)s.uid);
1273                 printf(" ino:%u", s.ino);
1274                 printf(" sk:%llx", s.sk);
1275                 if (opt[0])
1276                         printf(" opt:\"%s\"", opt);
1277         }
1278         printf("\n");
1279
1280         return 0;
1281 }
1282
1283 static int generic_record_read(FILE *fp,
1284                                int (*worker)(char*, const struct filter *, int),
1285                                const struct filter *f, int fam)
1286 {
1287         char line[256];
1288
1289         /* skip header */
1290         if (fgets(line, sizeof(line), fp) == NULL)
1291                 goto outerr;
1292
1293         while (fgets(line, sizeof(line), fp) != NULL) {
1294                 int n = strlen(line);
1295                 if (n == 0 || line[n-1] != '\n') {
1296                         errno = -EINVAL;
1297                         return -1;
1298                 }
1299                 line[n-1] = 0;
1300
1301                 if (worker(line, f, fam) < 0)
1302                         return 0;
1303         }
1304 outerr:
1305
1306         return ferror(fp) ? -1 : 0;
1307 }
1308
1309 static char *sprint_bw(char *buf, double bw)
1310 {
1311         if (bw > 1000000.)
1312                 sprintf(buf,"%.1fM", bw / 1000000.);
1313         else if (bw > 1000.)
1314                 sprintf(buf,"%.1fK", bw / 1000.);
1315         else
1316                 sprintf(buf, "%g", bw);
1317
1318         return buf;
1319 }
1320
1321 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r)
1322 {
1323         struct rtattr * tb[INET_DIAG_MAX+1];
1324         char b1[64];
1325         double rtt = 0;
1326
1327         parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
1328                      nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1329
1330         if (tb[INET_DIAG_MEMINFO]) {
1331                 const struct inet_diag_meminfo *minfo
1332                         = RTA_DATA(tb[INET_DIAG_MEMINFO]);
1333                 printf(" mem:(r%u,w%u,f%u,t%u)",
1334                        minfo->idiag_rmem,
1335                        minfo->idiag_wmem,
1336                        minfo->idiag_fmem,
1337                        minfo->idiag_tmem);
1338         }
1339
1340         if (tb[INET_DIAG_INFO]) {
1341                 struct tcp_info *info;
1342                 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
1343
1344                 /* workaround for older kernels with less fields */
1345                 if (len < sizeof(*info)) {
1346                         info = alloca(sizeof(*info));
1347                         memset(info, 0, sizeof(*info));
1348                         memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
1349                 } else
1350                         info = RTA_DATA(tb[INET_DIAG_INFO]);
1351
1352                 if (show_options) {
1353                         if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1354                                 printf(" ts");
1355                         if (info->tcpi_options & TCPI_OPT_SACK)
1356                                 printf(" sack");
1357                         if (info->tcpi_options & TCPI_OPT_ECN)
1358                                 printf(" ecn");
1359                 }
1360
1361                 if (tb[INET_DIAG_CONG])
1362                         printf(" %s", (char *) RTA_DATA(tb[INET_DIAG_CONG]));
1363
1364                 if (info->tcpi_options & TCPI_OPT_WSCALE)
1365                         printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1366                                info->tcpi_rcv_wscale);
1367                 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1368                         printf(" rto:%g", (double)info->tcpi_rto/1000);
1369                 if (info->tcpi_rtt)
1370                         printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1371                                (double)info->tcpi_rttvar/1000);
1372                 if (info->tcpi_ato)
1373                         printf(" ato:%g", (double)info->tcpi_ato/1000);
1374                 if (info->tcpi_snd_cwnd != 2)
1375                         printf(" cwnd:%d", info->tcpi_snd_cwnd);
1376                 if (info->tcpi_snd_ssthresh < 0xFFFF)
1377                         printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
1378
1379                 rtt = (double) info->tcpi_rtt;
1380                 if (tb[INET_DIAG_VEGASINFO]) {
1381                         const struct tcpvegas_info *vinfo
1382                                 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
1383
1384                         if (vinfo->tcpv_enabled &&
1385                             vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1386                                 rtt =  vinfo->tcpv_rtt;
1387                 }
1388
1389                 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1390                         printf(" send %sbps",
1391                                sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1392                                          (double) info->tcpi_snd_mss * 8000000.
1393                                          / rtt));
1394                 }
1395
1396                 if (info->tcpi_rcv_rtt)
1397                         printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1398                 if (info->tcpi_rcv_space)
1399                         printf(" rcv_space:%d", info->tcpi_rcv_space);
1400
1401         }
1402 }
1403
1404 static int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f)
1405 {
1406         struct inet_diag_msg *r = NLMSG_DATA(nlh);
1407         struct tcpstat s;
1408
1409         s.state = r->idiag_state;
1410         s.local.family = s.remote.family = r->idiag_family;
1411         s.lport = ntohs(r->id.idiag_sport);
1412         s.rport = ntohs(r->id.idiag_dport);
1413         if (s.local.family == AF_INET) {
1414                 s.local.bytelen = s.remote.bytelen = 4;
1415         } else {
1416                 s.local.bytelen = s.remote.bytelen = 16;
1417         }
1418         memcpy(s.local.data, r->id.idiag_src, s.local.bytelen);
1419         memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen);
1420
1421         if (f && f->f && run_ssfilter(f->f, &s) == 0)
1422                 return 0;
1423
1424         if (netid_width)
1425                 printf("%-*s ", netid_width, "tcp");
1426         if (state_width)
1427                 printf("%-*s ", state_width, sstate_name[s.state]);
1428
1429         printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue);
1430
1431         formatted_print(&s.local, s.lport);
1432         formatted_print(&s.remote, s.rport);
1433
1434         if (show_options) {
1435                 if (r->idiag_timer) {
1436                         if (r->idiag_timer > 4)
1437                                 r->idiag_timer = 5;
1438                         printf(" timer:(%s,%s,%d)",
1439                                tmr_name[r->idiag_timer],
1440                                print_ms_timer(r->idiag_expires),
1441                                r->idiag_retrans);
1442                 }
1443         }
1444         if (show_users) {
1445                 char ubuf[4096];
1446                 if (find_users(r->idiag_inode, ubuf, sizeof(ubuf)) > 0)
1447                         printf(" users:(%s)", ubuf);
1448         }
1449         if (show_details) {
1450                 if (r->idiag_uid)
1451                         printf(" uid:%u", (unsigned)r->idiag_uid);
1452                 printf(" ino:%u", r->idiag_inode);
1453                 printf(" sk:");
1454                 if (r->id.idiag_cookie[1] != 0)
1455                         printf("%08x", r->id.idiag_cookie[1]);
1456                 printf("%08x", r->id.idiag_cookie[0]);
1457         }
1458         if (show_mem || show_tcpinfo) {
1459                 printf("\n\t");
1460                 tcp_show_info(nlh, r);
1461         }
1462
1463         printf("\n");
1464
1465         return 0;
1466 }
1467
1468 static int tcp_show_netlink(struct filter *f, FILE *dump_fp, int socktype)
1469 {
1470         int fd;
1471         struct sockaddr_nl nladdr;
1472         struct {
1473                 struct nlmsghdr nlh;
1474                 struct inet_diag_req r;
1475         } req;
1476         char    *bc = NULL;
1477         int     bclen;
1478         struct msghdr msg;
1479         struct rtattr rta;
1480         char    buf[8192];
1481         struct iovec iov[3];
1482
1483         if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
1484                 return -1;
1485
1486         memset(&nladdr, 0, sizeof(nladdr));
1487         nladdr.nl_family = AF_NETLINK;
1488
1489         req.nlh.nlmsg_len = sizeof(req);
1490         req.nlh.nlmsg_type = socktype;
1491         req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1492         req.nlh.nlmsg_pid = 0;
1493         req.nlh.nlmsg_seq = 123456;
1494         memset(&req.r, 0, sizeof(req.r));
1495         req.r.idiag_family = AF_INET;
1496         req.r.idiag_states = f->states;
1497         if (show_mem)
1498                 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
1499
1500         if (show_tcpinfo) {
1501                 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1502                 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1503                 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
1504         }
1505
1506         iov[0] = (struct iovec){
1507                 .iov_base = &req,
1508                 .iov_len = sizeof(req)
1509         };
1510         if (f->f) {
1511                 bclen = ssfilter_bytecompile(f->f, &bc);
1512                 rta.rta_type = INET_DIAG_REQ_BYTECODE;
1513                 rta.rta_len = RTA_LENGTH(bclen);
1514                 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1515                 iov[2] = (struct iovec){ bc, bclen };
1516                 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1517         }
1518
1519         msg = (struct msghdr) {
1520                 .msg_name = (void*)&nladdr,
1521                 .msg_namelen = sizeof(nladdr),
1522                 .msg_iov = iov,
1523                 .msg_iovlen = f->f ? 3 : 1,
1524         };
1525
1526         if (sendmsg(fd, &msg, 0) < 0)
1527                 return -1;
1528
1529         iov[0] = (struct iovec){
1530                 .iov_base = buf,
1531                 .iov_len = sizeof(buf)
1532         };
1533
1534         while (1) {
1535                 int status;
1536                 struct nlmsghdr *h;
1537
1538                 msg = (struct msghdr) {
1539                         (void*)&nladdr, sizeof(nladdr),
1540                         iov,    1,
1541                         NULL,   0,
1542                         0
1543                 };
1544
1545                 status = recvmsg(fd, &msg, 0);
1546
1547                 if (status < 0) {
1548                         if (errno == EINTR)
1549                                 continue;
1550                         perror("OVERRUN");
1551                         continue;
1552                 }
1553                 if (status == 0) {
1554                         fprintf(stderr, "EOF on netlink\n");
1555                         return 0;
1556                 }
1557
1558                 if (dump_fp)
1559                         fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1560
1561                 h = (struct nlmsghdr*)buf;
1562                 while (NLMSG_OK(h, status)) {
1563                         int err;
1564                         struct inet_diag_msg *r = NLMSG_DATA(h);
1565
1566                         if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1567                             h->nlmsg_seq != 123456)
1568                                 goto skip_it;
1569
1570                         if (h->nlmsg_type == NLMSG_DONE)
1571                                 return 0;
1572                         if (h->nlmsg_type == NLMSG_ERROR) {
1573                                 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1574                                 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1575                                         fprintf(stderr, "ERROR truncated\n");
1576                                 } else {
1577                                         errno = -err->error;
1578                                         perror("TCPDIAG answers");
1579                                 }
1580                                 return 0;
1581                         }
1582                         if (!dump_fp) {
1583                                 if (!(f->families & (1<<r->idiag_family))) {
1584                                         h = NLMSG_NEXT(h, status);
1585                                         continue;
1586                                 }
1587                                 err = tcp_show_sock(h, NULL);
1588                                 if (err < 0)
1589                                         return err;
1590                         }
1591
1592 skip_it:
1593                         h = NLMSG_NEXT(h, status);
1594                 }
1595                 if (msg.msg_flags & MSG_TRUNC) {
1596                         fprintf(stderr, "Message truncated\n");
1597                         continue;
1598                 }
1599                 if (status) {
1600                         fprintf(stderr, "!!!Remnant of size %d\n", status);
1601                         exit(1);
1602                 }
1603         }
1604         return 0;
1605 }
1606
1607 static int tcp_show_netlink_file(struct filter *f)
1608 {
1609         FILE    *fp;
1610         char    buf[8192];
1611
1612         if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1613                 perror("fopen($TCPDIAG_FILE)");
1614                 return -1;
1615         }
1616
1617         while (1) {
1618                 int status, err;
1619                 struct nlmsghdr *h = (struct nlmsghdr*)buf;
1620
1621                 status = fread(buf, 1, sizeof(*h), fp);
1622                 if (status < 0) {
1623                         perror("Reading header from $TCPDIAG_FILE");
1624                         return -1;
1625                 }
1626                 if (status != sizeof(*h)) {
1627                         perror("Unexpected EOF reading $TCPDIAG_FILE");
1628                         return -1;
1629                 }
1630
1631                 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
1632
1633                 if (status < 0) {
1634                         perror("Reading $TCPDIAG_FILE");
1635                         return -1;
1636                 }
1637                 if (status + sizeof(*h) < h->nlmsg_len) {
1638                         perror("Unexpected EOF reading $TCPDIAG_FILE");
1639                         return -1;
1640                 }
1641
1642                 /* The only legal exit point */
1643                 if (h->nlmsg_type == NLMSG_DONE)
1644                         return 0;
1645
1646                 if (h->nlmsg_type == NLMSG_ERROR) {
1647                         struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1648                         if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1649                                 fprintf(stderr, "ERROR truncated\n");
1650                         } else {
1651                                 errno = -err->error;
1652                                 perror("TCPDIAG answered");
1653                         }
1654                         return -1;
1655                 }
1656
1657                 err = tcp_show_sock(h, f);
1658                 if (err < 0)
1659                         return err;
1660         }
1661 }
1662
1663 static int tcp_show(struct filter *f, int socktype)
1664 {
1665         FILE *fp = NULL;
1666         char *buf = NULL;
1667         int bufsize = 64*1024;
1668
1669         dg_proto = TCP_PROTO;
1670
1671         if (getenv("TCPDIAG_FILE"))
1672                 return tcp_show_netlink_file(f);
1673
1674         if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
1675             && tcp_show_netlink(f, NULL, socktype) == 0)
1676                 return 0;
1677
1678         /* Sigh... We have to parse /proc/net/tcp... */
1679
1680
1681         /* Estimate amount of sockets and try to allocate
1682          * huge buffer to read all the table at one read.
1683          * Limit it by 16MB though. The assumption is: as soon as
1684          * kernel was able to hold information about N connections,
1685          * it is able to give us some memory for snapshot.
1686          */
1687         if (1) {
1688                 int guess = slabstat.socks+slabstat.tcp_syns;
1689                 if (f->states&(1<<SS_TIME_WAIT))
1690                         guess += slabstat.tcp_tws;
1691                 if (guess > (16*1024*1024)/128)
1692                         guess = (16*1024*1024)/128;
1693                 guess *= 128;
1694                 if (guess > bufsize)
1695                         bufsize = guess;
1696         }
1697         while (bufsize >= 64*1024) {
1698                 if ((buf = malloc(bufsize)) != NULL)
1699                         break;
1700                 bufsize /= 2;
1701         }
1702         if (buf == NULL) {
1703                 errno = ENOMEM;
1704                 return -1;
1705         }
1706
1707         if (f->families & (1<<AF_INET)) {
1708                 if ((fp = net_tcp_open()) == NULL)
1709                         goto outerr;
1710
1711                 setbuffer(fp, buf, bufsize);
1712                 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
1713                         goto outerr;
1714                 fclose(fp);
1715         }
1716
1717         if ((f->families & (1<<AF_INET6)) &&
1718             (fp = net_tcp6_open()) != NULL) {
1719                 setbuffer(fp, buf, bufsize);
1720                 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
1721                         goto outerr;
1722                 fclose(fp);
1723         }
1724
1725         free(buf);
1726         return 0;
1727
1728 outerr:
1729         do {
1730                 int saved_errno = errno;
1731                 if (buf)
1732                         free(buf);
1733                 if (fp)
1734                         fclose(fp);
1735                 errno = saved_errno;
1736                 return -1;
1737         } while (0);
1738 }
1739
1740
1741 int dgram_show_line(char *line, const struct filter *f, int family)
1742 {
1743         struct tcpstat s;
1744         char *loc, *rem, *data;
1745         char opt[256];
1746         int n;
1747         char *p;
1748
1749         if ((p = strchr(line, ':')) == NULL)
1750                 return -1;
1751         loc = p+2;
1752
1753         if ((p = strchr(loc, ':')) == NULL)
1754                 return -1;
1755         p[5] = 0;
1756         rem = p+6;
1757
1758         if ((p = strchr(rem, ':')) == NULL)
1759                 return -1;
1760         p[5] = 0;
1761         data = p+6;
1762
1763         do {
1764                 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1765
1766                 if (!(f->states & (1<<state)))
1767                         return 0;
1768         } while (0);
1769
1770         s.local.family = s.remote.family = family;
1771         if (family == AF_INET) {
1772                 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1773                 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1774                 s.local.bytelen = s.remote.bytelen = 4;
1775         } else {
1776                 sscanf(loc, "%08x%08x%08x%08x:%x",
1777                        s.local.data,
1778                        s.local.data+1,
1779                        s.local.data+2,
1780                        s.local.data+3,
1781                        &s.lport);
1782                 sscanf(rem, "%08x%08x%08x%08x:%x",
1783                        s.remote.data,
1784                        s.remote.data+1,
1785                        s.remote.data+2,
1786                        s.remote.data+3,
1787                        &s.rport);
1788                 s.local.bytelen = s.remote.bytelen = 16;
1789         }
1790
1791         if (f->f && run_ssfilter(f->f, &s) == 0)
1792                 return 0;
1793
1794         opt[0] = 0;
1795         n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
1796                &s.state, &s.wq, &s.rq,
1797                &s.uid, &s.ino,
1798                &s.refcnt, &s.sk, opt);
1799
1800         if (n < 9)
1801                 opt[0] = 0;
1802
1803         if (netid_width)
1804                 printf("%-*s ", netid_width, dg_proto);
1805         if (state_width)
1806                 printf("%-*s ", state_width, sstate_name[s.state]);
1807
1808         printf("%-6d %-6d ", s.rq, s.wq);
1809
1810         formatted_print(&s.local, s.lport);
1811         formatted_print(&s.remote, s.rport);
1812
1813         if (show_users) {
1814                 char ubuf[4096];
1815                 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1816                         printf(" users:(%s)", ubuf);
1817         }
1818
1819         if (show_details) {
1820                 if (s.uid)
1821                         printf(" uid=%u", (unsigned)s.uid);
1822                 printf(" ino=%u", s.ino);
1823                 printf(" sk=%llx", s.sk);
1824                 if (opt[0])
1825                         printf(" opt:\"%s\"", opt);
1826         }
1827         printf("\n");
1828
1829         return 0;
1830 }
1831
1832
1833 int udp_show(struct filter *f)
1834 {
1835         FILE *fp = NULL;
1836
1837         dg_proto = UDP_PROTO;
1838
1839         if (f->families&(1<<AF_INET)) {
1840                 if ((fp = net_udp_open()) == NULL)
1841                         goto outerr;
1842                 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1843                         goto outerr;
1844                 fclose(fp);
1845         }
1846
1847         if ((f->families&(1<<AF_INET6)) &&
1848             (fp = net_udp6_open()) != NULL) {
1849                 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1850                         goto outerr;
1851                 fclose(fp);
1852         }
1853         return 0;
1854
1855 outerr:
1856         do {
1857                 int saved_errno = errno;
1858                 if (fp)
1859                         fclose(fp);
1860                 errno = saved_errno;
1861                 return -1;
1862         } while (0);
1863 }
1864
1865 int raw_show(struct filter *f)
1866 {
1867         FILE *fp = NULL;
1868
1869         dg_proto = RAW_PROTO;
1870
1871         if (f->families&(1<<AF_INET)) {
1872                 if ((fp = net_raw_open()) == NULL)
1873                         goto outerr;
1874                 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1875                         goto outerr;
1876                 fclose(fp);
1877         }
1878
1879         if ((f->families&(1<<AF_INET6)) &&
1880             (fp = net_raw6_open()) != NULL) {
1881                 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1882                         goto outerr;
1883                 fclose(fp);
1884         }
1885         return 0;
1886
1887 outerr:
1888         do {
1889                 int saved_errno = errno;
1890                 if (fp)
1891                         fclose(fp);
1892                 errno = saved_errno;
1893                 return -1;
1894         } while (0);
1895 }
1896
1897
1898 struct unixstat
1899 {
1900         struct unixstat *next;
1901         int ino;
1902         int peer;
1903         int rq;
1904         int wq;
1905         int state;
1906         int type;
1907         char *name;
1908 };
1909
1910
1911
1912 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
1913                          SS_ESTABLISHED, SS_CLOSING };
1914
1915
1916 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
1917
1918 void unix_list_free(struct unixstat *list)
1919 {
1920         while (list) {
1921                 struct unixstat *s = list;
1922                 list = list->next;
1923                 if (s->name)
1924                         free(s->name);
1925                 free(s);
1926         }
1927 }
1928
1929 void unix_list_print(struct unixstat *list, struct filter *f)
1930 {
1931         struct unixstat *s;
1932         char *peer;
1933
1934         for (s = list; s; s = s->next) {
1935                 if (!(f->states & (1<<s->state)))
1936                         continue;
1937                 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
1938                         continue;
1939                 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
1940                         continue;
1941
1942                 peer = "*";
1943                 if (s->peer) {
1944                         struct unixstat *p;
1945                         for (p = list; p; p = p->next) {
1946                                 if (s->peer == p->ino)
1947                                         break;
1948                         }
1949                         if (!p) {
1950                                 peer = "?";
1951                         } else {
1952                                 peer = p->name ? : "*";
1953                         }
1954                 }
1955
1956                 if (f->f) {
1957                         struct tcpstat tst;
1958                         tst.local.family = AF_UNIX;
1959                         tst.remote.family = AF_UNIX;
1960                         memcpy(tst.local.data, &s->name, sizeof(s->name));
1961                         if (strcmp(peer, "*") == 0)
1962                                 memset(tst.remote.data, 0, sizeof(peer));
1963                         else
1964                                 memcpy(tst.remote.data, &peer, sizeof(peer));
1965                         if (run_ssfilter(f->f, &tst) == 0)
1966                                 continue;
1967                 }
1968
1969                 if (netid_width)
1970                         printf("%-*s ", netid_width,
1971                                s->type == SOCK_STREAM ? "u_str" : "u_dgr");
1972                 if (state_width)
1973                         printf("%-*s ", state_width, sstate_name[s->state]);
1974                 printf("%-6d %-6d ", s->rq, s->wq);
1975                 printf("%*s %-*d %*s %-*d",
1976                        addr_width, s->name ? : "*", serv_width, s->ino,
1977                        addr_width, peer, serv_width, s->peer);
1978                 if (show_users) {
1979                         char ubuf[4096];
1980                         if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0)
1981                                 printf(" users:(%s)", ubuf);
1982                 }
1983                 printf("\n");
1984         }
1985 }
1986
1987 int unix_show(struct filter *f)
1988 {
1989         FILE *fp;
1990         char buf[256];
1991         char name[128];
1992         int  newformat = 0;
1993         int  cnt;
1994         struct unixstat *list = NULL;
1995
1996         if ((fp = net_unix_open()) == NULL)
1997                 return -1;
1998         fgets(buf, sizeof(buf)-1, fp);
1999
2000         if (memcmp(buf, "Peer", 4) == 0)
2001                 newformat = 1;
2002         cnt = 0;
2003
2004         while (fgets(buf, sizeof(buf)-1, fp)) {
2005                 struct unixstat *u, **insp;
2006                 int flags;
2007
2008                 if (!(u = malloc(sizeof(*u))))
2009                         break;
2010                 u->name = NULL;
2011
2012                 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
2013                            &u->peer, &u->rq, &u->wq, &flags, &u->type,
2014                            &u->state, &u->ino, name) < 8)
2015                         name[0] = 0;
2016
2017                 if (flags&(1<<16)) {
2018                         u->state = SS_LISTEN;
2019                 } else {
2020                         u->state = unix_state_map[u->state-1];
2021                         if (u->type == SOCK_DGRAM &&
2022                             u->state == SS_CLOSE &&
2023                             u->peer)
2024                                 u->state = SS_ESTABLISHED;
2025                 }
2026
2027                 if (!newformat) {
2028                         u->peer = 0;
2029                         u->rq = 0;
2030                         u->wq = 0;
2031                 }
2032
2033                 insp = &list;
2034                 while (*insp) {
2035                         if (u->type < (*insp)->type ||
2036                             (u->type == (*insp)->type &&
2037                              u->ino < (*insp)->ino))
2038                                 break;
2039                         insp = &(*insp)->next;
2040                 }
2041                 u->next = *insp;
2042                 *insp = u;
2043
2044                 if (name[0]) {
2045                         if ((u->name = malloc(strlen(name)+1)) == NULL)
2046                                 break;
2047                         strcpy(u->name, name);
2048                 }
2049                 if (++cnt > MAX_UNIX_REMEMBER) {
2050                         unix_list_print(list, f);
2051                         unix_list_free(list);
2052                         list = NULL;
2053                         cnt = 0;
2054                 }
2055         }
2056
2057         if (list) {
2058                 unix_list_print(list, f);
2059                 unix_list_free(list);
2060                 list = NULL;
2061                 cnt = 0;
2062         }
2063
2064         return 0;
2065 }
2066
2067
2068 int packet_show(struct filter *f)
2069 {
2070         FILE *fp;
2071         char buf[256];
2072         int type;
2073         int prot;
2074         int iface;
2075         int state;
2076         int rq;
2077         int uid;
2078         int ino;
2079         unsigned long long sk;
2080
2081         if (!(f->states & (1<<SS_CLOSE)))
2082                 return 0;
2083
2084         if ((fp = net_packet_open()) == NULL)
2085                 return -1;
2086         fgets(buf, sizeof(buf)-1, fp);
2087
2088         while (fgets(buf, sizeof(buf)-1, fp)) {
2089                 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2090                        &sk,
2091                        &type, &prot, &iface, &state,
2092                        &rq, &uid, &ino);
2093
2094                 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2095                         continue;
2096                 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2097                         continue;
2098                 if (f->f) {
2099                         struct tcpstat tst;
2100                         tst.local.family = AF_PACKET;
2101                         tst.remote.family = AF_PACKET;
2102                         tst.rport = 0;
2103                         tst.lport = iface;
2104                         tst.local.data[0] = prot;
2105                         tst.remote.data[0] = 0;
2106                         if (run_ssfilter(f->f, &tst) == 0)
2107                                 continue;
2108                 }
2109
2110                 if (netid_width)
2111                         printf("%-*s ", netid_width,
2112                                type == SOCK_RAW ? "p_raw" : "p_dgr");
2113                 if (state_width)
2114                         printf("%-*s ", state_width, "UNCONN");
2115                 printf("%-6d %-6d ", rq, 0);
2116                 if (prot == 3) {
2117                         printf("%*s:", addr_width, "*");
2118                 } else {
2119                         char tb[16];
2120                         printf("%*s:", addr_width,
2121                                ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2122                 }
2123                 if (iface == 0) {
2124                         printf("%-*s ", serv_width, "*");
2125                 } else {
2126                         printf("%-*s ", serv_width, xll_index_to_name(iface));
2127                 }
2128                 printf("%*s*%-*s",
2129                        addr_width, "", serv_width, "");
2130
2131                 if (show_users) {
2132                         char ubuf[4096];
2133                         if (find_users(ino, ubuf, sizeof(ubuf)) > 0)
2134                                 printf(" users:(%s)", ubuf);
2135                 }
2136                 if (show_details) {
2137                         printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2138                 }
2139                 printf("\n");
2140         }
2141
2142         return 0;
2143 }
2144
2145 int netlink_show(struct filter *f)
2146 {
2147         FILE *fp;
2148         char buf[256];
2149         int prot, pid;
2150         unsigned groups;
2151         int rq, wq, rc;
2152         unsigned long long sk, cb;
2153
2154         if (!(f->states & (1<<SS_CLOSE)))
2155                 return 0;
2156
2157         if ((fp = net_netlink_open()) == NULL)
2158                 return -1;
2159         fgets(buf, sizeof(buf)-1, fp);
2160
2161         while (fgets(buf, sizeof(buf)-1, fp)) {
2162                 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
2163                        &sk,
2164                        &prot, &pid, &groups, &rq, &wq, &cb, &rc);
2165
2166                 if (f->f) {
2167                         struct tcpstat tst;
2168                         tst.local.family = AF_NETLINK;
2169                         tst.remote.family = AF_NETLINK;
2170                         tst.rport = -1;
2171                         tst.lport = pid;
2172                         tst.local.data[0] = prot;
2173                         tst.remote.data[0] = 0;
2174                         if (run_ssfilter(f->f, &tst) == 0)
2175                                 continue;
2176                 }
2177
2178                 if (netid_width)
2179                         printf("%-*s ", netid_width, "nl");
2180                 if (state_width)
2181                         printf("%-*s ", state_width, "UNCONN");
2182                 printf("%-6d %-6d ", rq, wq);
2183                 if (resolve_services && prot == 0)
2184                         printf("%*s:", addr_width, "rtnl");
2185                 else if (resolve_services && prot == 3)
2186                         printf("%*s:", addr_width, "fw");
2187                 else if (resolve_services && prot == 4)
2188                         printf("%*s:", addr_width, "tcpdiag");
2189                 else
2190                         printf("%*d:", addr_width, prot);
2191                 if (pid == -1) {
2192                         printf("%-*s ", serv_width, "*");
2193                 } else if (resolve_services) {
2194                         int done = 0;
2195                         if (!pid) {
2196                                 done = 1;
2197                                 printf("%-*s ", serv_width, "kernel");
2198                         } else if (pid > 0) {
2199                                 char procname[64];
2200                                 FILE *fp;
2201                                 sprintf(procname, "%s/%d/stat",
2202                                         getenv("PROC_ROOT") ? : "/proc", pid);
2203                                 if ((fp = fopen(procname, "r")) != NULL) {
2204                                         if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2205                                                 sprintf(procname+strlen(procname), "/%d", pid);
2206                                                 printf("%-*s ", serv_width, procname);
2207                                                 done = 1;
2208                                         }
2209                                         fclose(fp);
2210                                 }
2211                         }
2212                         if (!done)
2213                                 printf("%-*d ", serv_width, pid);
2214                 } else {
2215                         printf("%-*d ", serv_width, pid);
2216                 }
2217                 printf("%*s*%-*s",
2218                        addr_width, "", serv_width, "");
2219
2220                 if (show_details) {
2221                         printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
2222                 }
2223                 printf("\n");
2224         }
2225
2226         return 0;
2227 }
2228
2229 struct snmpstat
2230 {
2231         int tcp_estab;
2232 };
2233
2234 int get_snmp_int(char *proto, char *key, int *result)
2235 {
2236         char buf[1024];
2237         FILE *fp;
2238         int protolen = strlen(proto);
2239         int keylen = strlen(key);
2240
2241         *result = 0;
2242
2243         if ((fp = net_snmp_open()) == NULL)
2244                 return -1;
2245
2246         while (fgets(buf, sizeof(buf), fp) != NULL) {
2247                 char *p = buf;
2248                 int  pos = 0;
2249                 if (memcmp(buf, proto, protolen))
2250                         continue;
2251                 while ((p = strchr(p, ' ')) != NULL) {
2252                         pos++;
2253                         p++;
2254                         if (memcmp(p, key, keylen) == 0 &&
2255                             (p[keylen] == ' ' || p[keylen] == '\n'))
2256                                 break;
2257                 }
2258                 if (fgets(buf, sizeof(buf), fp) == NULL)
2259                         break;
2260                 if (memcmp(buf, proto, protolen))
2261                         break;
2262                 p = buf;
2263                 while ((p = strchr(p, ' ')) != NULL) {
2264                         p++;
2265                         if (--pos == 0) {
2266                                 sscanf(p, "%d", result);
2267                                 fclose(fp);
2268                                 return 0;
2269                         }
2270                 }
2271         }
2272
2273         fclose(fp);
2274         errno = ESRCH;
2275         return -1;
2276 }
2277
2278
2279 /* Get stats from sockstat */
2280
2281 struct sockstat
2282 {
2283         int socks;
2284         int tcp_mem;
2285         int tcp_total;
2286         int tcp_orphans;
2287         int tcp_tws;
2288         int tcp4_hashed;
2289         int udp4;
2290         int raw4;
2291         int frag4;
2292         int frag4_mem;
2293         int tcp6_hashed;
2294         int udp6;
2295         int raw6;
2296         int frag6;
2297         int frag6_mem;
2298 };
2299
2300 static void get_sockstat_line(char *line, struct sockstat *s)
2301 {
2302         char id[256], rem[256];
2303
2304         if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
2305                 return;
2306
2307         if (strcmp(id, "sockets:") == 0)
2308                 sscanf(rem, "%*s%d", &s->socks);
2309         else if (strcmp(id, "UDP:") == 0)
2310                 sscanf(rem, "%*s%d", &s->udp4);
2311         else if (strcmp(id, "UDP6:") == 0)
2312                 sscanf(rem, "%*s%d", &s->udp6);
2313         else if (strcmp(id, "RAW:") == 0)
2314                 sscanf(rem, "%*s%d", &s->raw4);
2315         else if (strcmp(id, "RAW6:") == 0)
2316                 sscanf(rem, "%*s%d", &s->raw6);
2317         else if (strcmp(id, "TCP6:") == 0)
2318                 sscanf(rem, "%*s%d", &s->tcp6_hashed);
2319         else if (strcmp(id, "FRAG:") == 0)
2320                 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
2321         else if (strcmp(id, "FRAG6:") == 0)
2322                 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
2323         else if (strcmp(id, "TCP:") == 0)
2324                 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
2325                        &s->tcp4_hashed,
2326                        &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
2327 }
2328
2329 int get_sockstat(struct sockstat *s)
2330 {
2331         char buf[256];
2332         FILE *fp;
2333
2334         memset(s, 0, sizeof(*s));
2335
2336         if ((fp = net_sockstat_open()) == NULL)
2337                 return -1;
2338         while(fgets(buf, sizeof(buf), fp) != NULL)
2339                 get_sockstat_line(buf, s);
2340         fclose(fp);
2341
2342         if ((fp = net_sockstat6_open()) == NULL)
2343                 return 0;
2344         while(fgets(buf, sizeof(buf), fp) != NULL)
2345                 get_sockstat_line(buf, s);
2346         fclose(fp);
2347
2348         return 0;
2349 }
2350
2351 int print_summary(void)
2352 {
2353         struct sockstat s;
2354         struct snmpstat sn;
2355
2356         if (get_sockstat(&s) < 0)
2357                 perror("ss: get_sockstat");
2358         if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
2359                 perror("ss: get_snmpstat");
2360
2361         printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
2362
2363         printf("TCP:   %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
2364                s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
2365                sn.tcp_estab,
2366                s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
2367                s.tcp_orphans,
2368                slabstat.tcp_syns,
2369                s.tcp_tws, slabstat.tcp_tws,
2370                slabstat.tcp_ports
2371                );
2372
2373         printf("\n");
2374         printf("Transport Total     IP        IPv6\n");
2375         printf("*         %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
2376         printf("RAW       %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
2377         printf("UDP       %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
2378         printf("TCP       %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
2379         printf("INET      %-9d %-9d %-9d\n",
2380                s.raw4+s.udp4+s.tcp4_hashed+
2381                s.raw6+s.udp6+s.tcp6_hashed,
2382                s.raw4+s.udp4+s.tcp4_hashed,
2383                s.raw6+s.udp6+s.tcp6_hashed);
2384         printf("FRAG      %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
2385
2386         printf("\n");
2387
2388         return 0;
2389 }
2390
2391 static void _usage(FILE *dest)
2392 {
2393         fprintf(dest,
2394 "Usage: ss [ OPTIONS ]\n"
2395 "       ss [ OPTIONS ] [ FILTER ]\n"
2396 "   -h, --help          this message\n"
2397 "   -V, --version       output version information\n"
2398 "   -n, --numeric       don't resolve service names\n"
2399 "   -r, --resolve       resolve host names\n"
2400 "   -a, --all           display all sockets\n"
2401 "   -l, --listening     display listening sockets\n"
2402 "   -o, --options       show timer information\n"
2403 "   -e, --extended      show detailed socket information\n"
2404 "   -m, --memory        show socket memory usage\n"
2405 "   -p, --processes     show process using socket\n"
2406 "   -i, --info          show internal TCP information\n"
2407 "   -s, --summary       show socket usage summary\n"
2408 "\n"
2409 "   -4, --ipv4          display only IP version 4 sockets\n"
2410 "   -6, --ipv6          display only IP version 6 sockets\n"
2411 "   -0, --packet        display PACKET sockets\n"
2412 "   -t, --tcp           display only TCP sockets\n"
2413 "   -u, --udp           display only UDP sockets\n"
2414 "   -d, --dccp          display only DCCP sockets\n"
2415 "   -w, --raw           display only RAW sockets\n"
2416 "   -x, --unix          display only Unix domain sockets\n"
2417 "   -f, --family=FAMILY display sockets of type FAMILY\n"
2418 "\n"
2419 "   -A, --query=QUERY\n"
2420 "       QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
2421 "\n"
2422 "   -F, --filter=FILE   read filter information from FILE\n"
2423 "       FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
2424                 );
2425 }
2426
2427 static void help(void) __attribute__((noreturn));
2428 static void help(void)
2429 {
2430         _usage(stdout);
2431         exit(0);
2432 }
2433
2434 static void usage(void) __attribute__((noreturn));
2435 static void usage(void)
2436 {
2437         _usage(stderr);
2438         exit(-1);
2439 }
2440
2441
2442 int scan_state(const char *state)
2443 {
2444         int i;
2445         if (strcasecmp(state, "close") == 0 ||
2446             strcasecmp(state, "closed") == 0)
2447                 return (1<<SS_CLOSE);
2448         if (strcasecmp(state, "syn-rcv") == 0)
2449                 return (1<<SS_SYN_RECV);
2450         if (strcasecmp(state, "established") == 0)
2451                 return (1<<SS_ESTABLISHED);
2452         if (strcasecmp(state, "all") == 0)
2453                 return SS_ALL;
2454         if (strcasecmp(state, "connected") == 0)
2455                 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
2456         if (strcasecmp(state, "synchronized") == 0)
2457                 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
2458         if (strcasecmp(state, "bucket") == 0)
2459                 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
2460         if (strcasecmp(state, "big") == 0)
2461                 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
2462         for (i=0; i<SS_MAX; i++) {
2463                 if (strcasecmp(state, sstate_namel[i]) == 0)
2464                         return (1<<i);
2465         }
2466         return 0;
2467 }
2468
2469 static const struct option long_opts[] = {
2470         { "numeric", 0, 0, 'n' },
2471         { "resolve", 0, 0, 'r' },
2472         { "options", 0, 0, 'o' },
2473         { "extended", 0, 0, 'e' },
2474         { "memory", 0, 0, 'm' },
2475         { "info", 0, 0, 'i' },
2476         { "processes", 0, 0, 'p' },
2477         { "dccp", 0, 0, 'd' },
2478         { "tcp", 0, 0, 't' },
2479         { "udp", 0, 0, 'u' },
2480         { "raw", 0, 0, 'w' },
2481         { "unix", 0, 0, 'x' },
2482         { "all", 0, 0, 'a' },
2483         { "listening", 0, 0, 'l' },
2484         { "ipv4", 0, 0, '4' },
2485         { "ipv6", 0, 0, '6' },
2486         { "packet", 0, 0, '0' },
2487         { "family", 1, 0, 'f' },
2488         { "socket", 1, 0, 'A' },
2489         { "summary", 0, 0, 's' },
2490         { "diag", 0, 0, 'D' },
2491         { "filter", 1, 0, 'F' },
2492         { "version", 0, 0, 'V' },
2493         { "help", 0, 0, 'h' },
2494         { 0 }
2495
2496 };
2497
2498 int main(int argc, char *argv[])
2499 {
2500         int do_default = 1;
2501         int saw_states = 0;
2502         int saw_query = 0;
2503         int do_summary = 0;
2504         const char *dump_tcpdiag = NULL;
2505         FILE *filter_fp = NULL;
2506         int ch;
2507
2508         memset(&current_filter, 0, sizeof(current_filter));
2509
2510         current_filter.states = default_filter.states;
2511
2512         while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spf:miA:D:F:vV",
2513                                  long_opts, NULL)) != EOF) {
2514                 switch(ch) {
2515                 case 'n':
2516                         resolve_services = 0;
2517                         break;
2518                 case 'r':
2519                         resolve_hosts = 1;
2520                         break;
2521                 case 'o':
2522                         show_options = 1;
2523                         break;
2524                 case 'e':
2525                         show_options = 1;
2526                         show_details++;
2527                         break;
2528                 case 'm':
2529                         show_mem = 1;
2530                         break;
2531                 case 'i':
2532                         show_tcpinfo = 1;
2533                         break;
2534                 case 'p':
2535                         show_users++;
2536                         user_ent_hash_build();
2537                         break;
2538                 case 'd':
2539                         current_filter.dbs |= (1<<DCCP_DB);
2540                         do_default = 0;
2541                         break;
2542                 case 't':
2543                         current_filter.dbs |= (1<<TCP_DB);
2544                         do_default = 0;
2545                         break;
2546                 case 'u':
2547                         current_filter.dbs |= (1<<UDP_DB);
2548                         do_default = 0;
2549                         break;
2550                 case 'w':
2551                         current_filter.dbs |= (1<<RAW_DB);
2552                         do_default = 0;
2553                         break;
2554                 case 'x':
2555                         current_filter.dbs |= UNIX_DBM;
2556                         do_default = 0;
2557                         break;
2558                 case 'a':
2559                         current_filter.states = SS_ALL;
2560                         break;
2561                 case 'l':
2562                         current_filter.states = (1<<SS_LISTEN);
2563                         break;
2564                 case '4':
2565                         preferred_family = AF_INET;
2566                         break;
2567                 case '6':
2568                         preferred_family = AF_INET6;
2569                         break;
2570                 case '0':
2571                         preferred_family = AF_PACKET;
2572                         break;
2573                 case 'f':
2574                         if (strcmp(optarg, "inet") == 0)
2575                                 preferred_family = AF_INET;
2576                         else if (strcmp(optarg, "inet6") == 0)
2577                                 preferred_family = AF_INET6;
2578                         else if (strcmp(optarg, "link") == 0)
2579                                 preferred_family = AF_PACKET;
2580                         else if (strcmp(optarg, "unix") == 0)
2581                                 preferred_family = AF_UNIX;
2582                         else if (strcmp(optarg, "netlink") == 0)
2583                                 preferred_family = AF_NETLINK;
2584                         else if (strcmp(optarg, "help") == 0)
2585                                 help();
2586                         else {
2587                                 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
2588                                 usage();
2589                         }
2590                         break;
2591                 case 'A':
2592                 {
2593                         char *p, *p1;
2594                         if (!saw_query) {
2595                                 current_filter.dbs = 0;
2596                                 saw_query = 1;
2597                                 do_default = 0;
2598                         }
2599                         p = p1 = optarg;
2600                         do {
2601                                 if ((p1 = strchr(p, ',')) != NULL)
2602                                         *p1 = 0;
2603                                 if (strcmp(p, "all") == 0) {
2604                                         current_filter.dbs = ALL_DB;
2605                                 } else if (strcmp(p, "inet") == 0) {
2606                                         current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
2607                                 } else if (strcmp(p, "udp") == 0) {
2608                                         current_filter.dbs |= (1<<UDP_DB);
2609                                 } else if (strcmp(p, "dccp") == 0) {
2610                                         current_filter.dbs |= (1<<DCCP_DB);
2611                                 } else if (strcmp(p, "tcp") == 0) {
2612                                         current_filter.dbs |= (1<<TCP_DB);
2613                                 } else if (strcmp(p, "raw") == 0) {
2614                                         current_filter.dbs |= (1<<RAW_DB);
2615                                 } else if (strcmp(p, "unix") == 0) {
2616                                         current_filter.dbs |= UNIX_DBM;
2617                                 } else if (strcasecmp(p, "unix_stream") == 0 ||
2618                                            strcmp(p, "u_str") == 0) {
2619                                         current_filter.dbs |= (1<<UNIX_ST_DB);
2620                                 } else if (strcasecmp(p, "unix_dgram") == 0 ||
2621                                            strcmp(p, "u_dgr") == 0) {
2622                                         current_filter.dbs |= (1<<UNIX_DG_DB);
2623                                 } else if (strcmp(p, "packet") == 0) {
2624                                         current_filter.dbs |= PACKET_DBM;
2625                                 } else if (strcmp(p, "packet_raw") == 0 ||
2626                                            strcmp(p, "p_raw") == 0) {
2627                                         current_filter.dbs |= (1<<PACKET_R_DB);
2628                                 } else if (strcmp(p, "packet_dgram") == 0 ||
2629                                            strcmp(p, "p_dgr") == 0) {
2630                                         current_filter.dbs |= (1<<PACKET_DG_DB);
2631                                 } else if (strcmp(p, "netlink") == 0) {
2632                                         current_filter.dbs |= (1<<NETLINK_DB);
2633                                 } else {
2634                                         fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
2635                                         usage();
2636                                 }
2637                                 p = p1 + 1;
2638                         } while (p1);
2639                         break;
2640                 }
2641                 case 's':
2642                         do_summary = 1;
2643                         break;
2644                 case 'D':
2645                         dump_tcpdiag = optarg;
2646                         break;
2647                 case 'F':
2648                         if (filter_fp) {
2649                                 fprintf(stderr, "More than one filter file\n");
2650                                 exit(-1);
2651                         }
2652                         if (optarg[0] == '-')
2653                                 filter_fp = stdin;
2654                         else
2655                                 filter_fp = fopen(optarg, "r");
2656                         if (!filter_fp) {
2657                                 perror("fopen filter file");
2658                                 exit(-1);
2659                         }
2660                         break;
2661                 case 'v':
2662                 case 'V':
2663                         printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
2664                         exit(0);
2665                 case 'h':
2666                 case '?':
2667                         help();
2668                 default:
2669                         usage();
2670                 }
2671         }
2672
2673         argc -= optind;
2674         argv += optind;
2675
2676         get_slabstat(&slabstat);
2677
2678         if (do_summary) {
2679                 print_summary();
2680                 if (do_default && argc == 0)
2681                         exit(0);
2682         }
2683
2684         if (do_default)
2685                 current_filter.dbs = default_filter.dbs;
2686
2687         if (preferred_family == AF_UNSPEC) {
2688                 if (!(current_filter.dbs&~UNIX_DBM))
2689                         preferred_family = AF_UNIX;
2690                 else if (!(current_filter.dbs&~PACKET_DBM))
2691                         preferred_family = AF_PACKET;
2692                 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
2693                         preferred_family = AF_NETLINK;
2694         }
2695
2696         if (preferred_family != AF_UNSPEC) {
2697                 int mask2;
2698                 if (preferred_family == AF_INET ||
2699                     preferred_family == AF_INET6) {
2700                         mask2= current_filter.dbs;
2701                 } else if (preferred_family == AF_PACKET) {
2702                         mask2 = PACKET_DBM;
2703                 } else if (preferred_family == AF_UNIX) {
2704                         mask2 = UNIX_DBM;
2705                 } else if (preferred_family == AF_NETLINK) {
2706                         mask2 = (1<<NETLINK_DB);
2707                 } else {
2708                         mask2 = 0;
2709                 }
2710
2711                 if (do_default)
2712                         current_filter.dbs = mask2;
2713                 else
2714                         current_filter.dbs &= mask2;
2715                 current_filter.families = (1<<preferred_family);
2716         } else {
2717                 if (!do_default)
2718                         current_filter.families = ~0;
2719                 else
2720                         current_filter.families = default_filter.families;
2721         }
2722         if (current_filter.dbs == 0) {
2723                 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
2724                 exit(0);
2725         }
2726         if (current_filter.families == 0) {
2727                 fprintf(stderr, "ss: no families to show with such filter.\n");
2728                 exit(0);
2729         }
2730
2731         if (resolve_services && resolve_hosts &&
2732             (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB))))
2733                 init_service_resolver();
2734
2735         /* Now parse filter... */
2736         if (argc == 0 && filter_fp) {
2737                 if (ssfilter_parse(&current_filter.f, 0, NULL, filter_fp))
2738                         usage();
2739         }
2740
2741         while (argc > 0) {
2742                 if (strcmp(*argv, "state") == 0) {
2743                         NEXT_ARG();
2744                         if (!saw_states)
2745                                 current_filter.states = 0;
2746                         current_filter.states |= scan_state(*argv);
2747                         saw_states = 1;
2748                 } else if (strcmp(*argv, "exclude") == 0 ||
2749                            strcmp(*argv, "excl") == 0) {
2750                         NEXT_ARG();
2751                         if (!saw_states)
2752                                 current_filter.states = SS_ALL;
2753                         current_filter.states &= ~scan_state(*argv);
2754                         saw_states = 1;
2755                 } else {
2756                         if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
2757                                 usage();
2758                         break;
2759                 }
2760                 argc--; argv++;
2761         }
2762
2763         if (current_filter.states == 0) {
2764                 fprintf(stderr, "ss: no socket states to show with such filter.\n");
2765                 exit(0);
2766         }
2767
2768         if (dump_tcpdiag) {
2769                 FILE *dump_fp = stdout;
2770                 if (!(current_filter.dbs & (1<<TCP_DB))) {
2771                         fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
2772                         exit(0);
2773                 }
2774                 if (dump_tcpdiag[0] != '-') {
2775                         dump_fp = fopen(dump_tcpdiag, "w");
2776                         if (!dump_tcpdiag) {
2777                                 perror("fopen dump file");
2778                                 exit(-1);
2779                         }
2780                 }
2781                 tcp_show_netlink(&current_filter, dump_fp, TCPDIAG_GETSOCK);
2782                 fflush(dump_fp);
2783                 exit(0);
2784         }
2785
2786         netid_width = 0;
2787         if (current_filter.dbs&(current_filter.dbs-1))
2788                 netid_width = 5;
2789
2790         state_width = 0;
2791         if (current_filter.states&(current_filter.states-1))
2792                 state_width = 10;
2793
2794         screen_width = 80;
2795         if (isatty(STDOUT_FILENO)) {
2796                 struct winsize w;
2797
2798                 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
2799                         if (w.ws_col > 0)
2800                                 screen_width = w.ws_col;
2801                 }
2802         }
2803
2804         addrp_width = screen_width;
2805         addrp_width -= netid_width+1;
2806         addrp_width -= state_width+1;
2807         addrp_width -= 14;
2808
2809         if (addrp_width&1) {
2810                 if (netid_width)
2811                         netid_width++;
2812                 else if (state_width)
2813                         state_width++;
2814         }
2815
2816         addrp_width /= 2;
2817         addrp_width--;
2818
2819         serv_width = resolve_services ? 7 : 5;
2820
2821         if (addrp_width < 15+serv_width+1)
2822                 addrp_width = 15+serv_width+1;
2823
2824         addr_width = addrp_width - serv_width - 1;
2825
2826         if (netid_width)
2827                 printf("%-*s ", netid_width, "Netid");
2828         if (state_width)
2829                 printf("%-*s ", state_width, "State");
2830         printf("%-6s %-6s ", "Recv-Q", "Send-Q");
2831
2832         printf("%*s:%-*s %*s:%-*s\n",
2833                addr_width, "Local Address", serv_width, "Port",
2834                addr_width, "Peer Address", serv_width, "Port");
2835
2836         fflush(stdout);
2837
2838         if (current_filter.dbs & (1<<NETLINK_DB))
2839                 netlink_show(&current_filter);
2840         if (current_filter.dbs & PACKET_DBM)
2841                 packet_show(&current_filter);
2842         if (current_filter.dbs & UNIX_DBM)
2843                 unix_show(&current_filter);
2844         if (current_filter.dbs & (1<<RAW_DB))
2845                 raw_show(&current_filter);
2846         if (current_filter.dbs & (1<<UDP_DB))
2847                 udp_show(&current_filter);
2848         if (current_filter.dbs & (1<<TCP_DB))
2849                 tcp_show(&current_filter, TCPDIAG_GETSOCK);
2850         if (current_filter.dbs & (1<<DCCP_DB))
2851                 tcp_show(&current_filter, DCCPDIAG_GETSOCK);
2852         return 0;
2853 }