misc/ss.c

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