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/sock_diag.h>
38 #include <linux/inet_diag.h>
39 #include <linux/unix_diag.h>
40
41 int resolve_hosts = 0;
42 int resolve_services = 1;
43 int preferred_family = AF_UNSPEC;
44 int show_options = 0;
45 int show_details = 0;
46 int show_users = 0;
47 int show_mem = 0;
48 int show_tcpinfo = 0;
49
50 int netid_width;
51 int state_width;
52 int addrp_width;
53 int addr_width;
54 int serv_width;
55 int screen_width;
56
57 static const char *TCP_PROTO = "tcp";
58 static const char *UDP_PROTO = "udp";
59 static const char *RAW_PROTO = "raw";
60 static const char *dg_proto = NULL;
61
62 enum
63 {
64 TCP_DB,
65 DCCP_DB,
66 UDP_DB,
67 RAW_DB,
68 UNIX_DG_DB,
69 UNIX_ST_DB,
70 PACKET_DG_DB,
71 PACKET_R_DB,
72 NETLINK_DB,
73 MAX_DB
74 };
75
76 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
77 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB))
78 #define ALL_DB ((1<<MAX_DB)-1)
79
80 enum {
81 SS_UNKNOWN,
82 SS_ESTABLISHED,
83 SS_SYN_SENT,
84 SS_SYN_RECV,
85 SS_FIN_WAIT1,
86 SS_FIN_WAIT2,
87 SS_TIME_WAIT,
88 SS_CLOSE,
89 SS_CLOSE_WAIT,
90 SS_LAST_ACK,
91 SS_LISTEN,
92 SS_CLOSING,
93 SS_MAX
94 };
95
96 #define SS_ALL ((1<<SS_MAX)-1)
97
98 #include "ssfilter.h"
99
100 struct filter
101 {
102 int dbs;
103 int states;
104 int families;
105 struct ssfilter *f;
106 };
107
108 struct filter default_filter = {
109 .dbs = (1<<TCP_DB),
110 .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
111 .families= (1<<AF_INET)|(1<<AF_INET6),
112 };
113
114 struct filter current_filter;
115
generic_proc_open(const char * env,const char * name)116 static FILE *generic_proc_open(const char *env, const char *name)
117 {
118 const char *p = getenv(env);
119 char store[128];
120
121 if (!p) {
122 p = getenv("PROC_ROOT") ? : "/proc";
123 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
124 p = store;
125 }
126
127 return fopen(p, "r");
128 }
129
net_tcp_open(void)130 static FILE *net_tcp_open(void)
131 {
132 return generic_proc_open("PROC_NET_TCP", "net/tcp");
133 }
134
net_tcp6_open(void)135 static FILE *net_tcp6_open(void)
136 {
137 return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
138 }
139
net_udp_open(void)140 static FILE *net_udp_open(void)
141 {
142 return generic_proc_open("PROC_NET_UDP", "net/udp");
143 }
144
net_udp6_open(void)145 static FILE *net_udp6_open(void)
146 {
147 return generic_proc_open("PROC_NET_UDP6", "net/udp6");
148 }
149
net_raw_open(void)150 static FILE *net_raw_open(void)
151 {
152 return generic_proc_open("PROC_NET_RAW", "net/raw");
153 }
154
net_raw6_open(void)155 static FILE *net_raw6_open(void)
156 {
157 return generic_proc_open("PROC_NET_RAW6", "net/raw6");
158 }
159
net_unix_open(void)160 static FILE *net_unix_open(void)
161 {
162 return generic_proc_open("PROC_NET_UNIX", "net/unix");
163 }
164
net_packet_open(void)165 static FILE *net_packet_open(void)
166 {
167 return generic_proc_open("PROC_NET_PACKET", "net/packet");
168 }
169
net_netlink_open(void)170 static FILE *net_netlink_open(void)
171 {
172 return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
173 }
174
slabinfo_open(void)175 static FILE *slabinfo_open(void)
176 {
177 return generic_proc_open("PROC_SLABINFO", "slabinfo");
178 }
179
net_sockstat_open(void)180 static FILE *net_sockstat_open(void)
181 {
182 return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
183 }
184
net_sockstat6_open(void)185 static FILE *net_sockstat6_open(void)
186 {
187 return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
188 }
189
net_snmp_open(void)190 static FILE *net_snmp_open(void)
191 {
192 return generic_proc_open("PROC_NET_SNMP", "net/snmp");
193 }
194
ephemeral_ports_open(void)195 static FILE *ephemeral_ports_open(void)
196 {
197 return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
198 }
199
200 struct user_ent {
201 struct user_ent *next;
202 unsigned int ino;
203 int pid;
204 int fd;
205 char process[0];
206 };
207
208 #define USER_ENT_HASH_SIZE 256
209 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
210
user_ent_hashfn(unsigned int ino)211 static int user_ent_hashfn(unsigned int ino)
212 {
213 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
214
215 return val & (USER_ENT_HASH_SIZE - 1);
216 }
217
user_ent_add(unsigned int ino,const char * process,int pid,int fd)218 static void user_ent_add(unsigned int ino, const char *process, int pid, int fd)
219 {
220 struct user_ent *p, **pp;
221 int str_len;
222
223 str_len = strlen(process) + 1;
224 p = malloc(sizeof(struct user_ent) + str_len);
225 if (!p)
226 abort();
227 p->next = NULL;
228 p->ino = ino;
229 p->pid = pid;
230 p->fd = fd;
231 strcpy(p->process, process);
232
233 pp = &user_ent_hash[user_ent_hashfn(ino)];
234 p->next = *pp;
235 *pp = p;
236 }
237
user_ent_hash_build(void)238 static void user_ent_hash_build(void)
239 {
240 const char *root = getenv("PROC_ROOT") ? : "/proc/";
241 struct dirent *d;
242 char name[1024];
243 int nameoff;
244 DIR *dir;
245
246 strcpy(name, root);
247 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
248 strcat(name, "/");
249
250 nameoff = strlen(name);
251
252 dir = opendir(name);
253 if (!dir)
254 return;
255
256 while ((d = readdir(dir)) != NULL) {
257 struct dirent *d1;
258 char process[16];
259 int pid, pos;
260 DIR *dir1;
261 char crap;
262
263 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
264 continue;
265
266 sprintf(name + nameoff, "%d/fd/", pid);
267 pos = strlen(name);
268 if ((dir1 = opendir(name)) == NULL)
269 continue;
270
271 process[0] = '\0';
272
273 while ((d1 = readdir(dir1)) != NULL) {
274 const char *pattern = "socket:[";
275 unsigned int ino;
276 char lnk[64];
277 int fd;
278 ssize_t link_len;
279
280 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
281 continue;
282
283 sprintf(name+pos, "%d", fd);
284
285 link_len = readlink(name, lnk, sizeof(lnk)-1);
286 if (link_len == -1)
287 continue;
288 lnk[link_len] = '\0';
289
290 if (strncmp(lnk, pattern, strlen(pattern)))
291 continue;
292
293 sscanf(lnk, "socket:[%u]", &ino);
294
295 if (process[0] == '\0') {
296 char tmp[1024];
297 FILE *fp;
298
299 snprintf(tmp, sizeof(tmp), "%s/%d/stat", root, pid);
300 if ((fp = fopen(tmp, "r")) != NULL) {
301 fscanf(fp, "%*d (%[^)])", process);
302 fclose(fp);
303 }
304 }
305
306 user_ent_add(ino, process, pid, fd);
307 }
308 closedir(dir1);
309 }
310 closedir(dir);
311 }
312
find_users(unsigned ino,char * buf,int buflen)313 int find_users(unsigned ino, char *buf, int buflen)
314 {
315 struct user_ent *p;
316 int cnt = 0;
317 char *ptr;
318
319 if (!ino)
320 return 0;
321
322 p = user_ent_hash[user_ent_hashfn(ino)];
323 ptr = buf;
324 while (p) {
325 if (p->ino != ino)
326 goto next;
327
328 if (ptr - buf >= buflen - 1)
329 break;
330
331 snprintf(ptr, buflen - (ptr - buf),
332 "(\"%s\",%d,%d),",
333 p->process, p->pid, p->fd);
334 ptr += strlen(ptr);
335 cnt++;
336
337 next:
338 p = p->next;
339 }
340
341 if (ptr != buf)
342 ptr[-1] = '\0';
343
344 return cnt;
345 }
346
347 /* Get stats from slab */
348
349 struct slabstat
350 {
351 int socks;
352 int tcp_ports;
353 int tcp_tws;
354 int tcp_syns;
355 int skbs;
356 };
357
358 struct slabstat slabstat;
359
360 static const char *slabstat_ids[] =
361 {
362 "sock",
363 "tcp_bind_bucket",
364 "tcp_tw_bucket",
365 "tcp_open_request",
366 "skbuff_head_cache",
367 };
368
get_slabstat(struct slabstat * s)369 int get_slabstat(struct slabstat *s)
370 {
371 char buf[256];
372 FILE *fp;
373 int cnt;
374
375 memset(s, 0, sizeof(*s));
376
377 fp = slabinfo_open();
378 if (!fp)
379 return -1;
380
381 cnt = sizeof(*s)/sizeof(int);
382
383 fgets(buf, sizeof(buf), fp);
384 while(fgets(buf, sizeof(buf), fp) != NULL) {
385 int i;
386 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
387 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
388 sscanf(buf, "%*s%d", ((int *)s) + i);
389 cnt--;
390 break;
391 }
392 }
393 if (cnt <= 0)
394 break;
395 }
396
397 fclose(fp);
398 return 0;
399 }
400
401 static const char *sstate_name[] = {
402 "UNKNOWN",
403 [TCP_ESTABLISHED] = "ESTAB",
404 [TCP_SYN_SENT] = "SYN-SENT",
405 [TCP_SYN_RECV] = "SYN-RECV",
406 [TCP_FIN_WAIT1] = "FIN-WAIT-1",
407 [TCP_FIN_WAIT2] = "FIN-WAIT-2",
408 [TCP_TIME_WAIT] = "TIME-WAIT",
409 [TCP_CLOSE] = "UNCONN",
410 [TCP_CLOSE_WAIT] = "CLOSE-WAIT",
411 [TCP_LAST_ACK] = "LAST-ACK",
412 [TCP_LISTEN] = "LISTEN",
413 [TCP_CLOSING] = "CLOSING",
414 };
415
416 static const char *sstate_namel[] = {
417 "UNKNOWN",
418 [TCP_ESTABLISHED] = "established",
419 [TCP_SYN_SENT] = "syn-sent",
420 [TCP_SYN_RECV] = "syn-recv",
421 [TCP_FIN_WAIT1] = "fin-wait-1",
422 [TCP_FIN_WAIT2] = "fin-wait-2",
423 [TCP_TIME_WAIT] = "time-wait",
424 [TCP_CLOSE] = "unconnected",
425 [TCP_CLOSE_WAIT] = "close-wait",
426 [TCP_LAST_ACK] = "last-ack",
427 [TCP_LISTEN] = "listening",
428 [TCP_CLOSING] = "closing",
429 };
430
431 struct tcpstat
432 {
433 inet_prefix local;
434 inet_prefix remote;
435 int lport;
436 int rport;
437 int state;
438 int rq, wq;
439 int timer;
440 int timeout;
441 int retrs;
442 unsigned ino;
443 int probes;
444 unsigned uid;
445 int refcnt;
446 unsigned long long sk;
447 int rto, ato, qack, cwnd, ssthresh;
448 };
449
450 static const char *tmr_name[] = {
451 "off",
452 "on",
453 "keepalive",
454 "timewait",
455 "persist",
456 "unknown"
457 };
458
print_ms_timer(int timeout)459 const char *print_ms_timer(int timeout)
460 {
461 static char buf[64];
462 int secs, msecs, minutes;
463 if (timeout < 0)
464 timeout = 0;
465 secs = timeout/1000;
466 minutes = secs/60;
467 secs = secs%60;
468 msecs = timeout%1000;
469 buf[0] = 0;
470 if (minutes) {
471 msecs = 0;
472 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
473 if (minutes > 9)
474 secs = 0;
475 }
476 if (secs) {
477 if (secs > 9)
478 msecs = 0;
479 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
480 }
481 if (msecs)
482 sprintf(buf+strlen(buf), "%03dms", msecs);
483 return buf;
484 }
485
print_hz_timer(int timeout)486 const char *print_hz_timer(int timeout)
487 {
488 int hz = get_user_hz();
489 return print_ms_timer(((timeout*1000) + hz-1)/hz);
490 }
491
492 struct scache
493 {
494 struct scache *next;
495 int port;
496 char *name;
497 const char *proto;
498 };
499
500 struct scache *rlist;
501
init_service_resolver(void)502 void init_service_resolver(void)
503 {
504 char buf[128];
505 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
506 if (fp) {
507 fgets(buf, sizeof(buf), fp);
508 while (fgets(buf, sizeof(buf), fp) != NULL) {
509 unsigned int progn, port;
510 char proto[128], prog[128];
511 if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
512 &port, prog+4) == 4) {
513 struct scache *c = malloc(sizeof(*c));
514 if (c) {
515 c->port = port;
516 memcpy(prog, "rpc.", 4);
517 c->name = strdup(prog);
518 if (strcmp(proto, TCP_PROTO) == 0)
519 c->proto = TCP_PROTO;
520 else if (strcmp(proto, UDP_PROTO) == 0)
521 c->proto = UDP_PROTO;
522 else
523 c->proto = NULL;
524 c->next = rlist;
525 rlist = c;
526 }
527 }
528 }
529 pclose(fp);
530 }
531 }
532
533 static int ip_local_port_min, ip_local_port_max;
534
535 /* Even do not try default linux ephemeral port ranges:
536 * default /etc/services contains so much of useless crap
537 * wouldbe "allocated" to this area that resolution
538 * is really harmful. I shrug each time when seeing
539 * "socks" or "cfinger" in dumps.
540 */
is_ephemeral(int port)541 static int is_ephemeral(int port)
542 {
543 if (!ip_local_port_min) {
544 FILE *f = ephemeral_ports_open();
545 if (f) {
546 fscanf(f, "%d %d",
547 &ip_local_port_min, &ip_local_port_max);
548 fclose(f);
549 } else {
550 ip_local_port_min = 1024;
551 ip_local_port_max = 4999;
552 }
553 }
554
555 return (port >= ip_local_port_min && port<= ip_local_port_max);
556 }
557
558
__resolve_service(int port)559 const char *__resolve_service(int port)
560 {
561 struct scache *c;
562
563 for (c = rlist; c; c = c->next) {
564 if (c->port == port && c->proto == dg_proto)
565 return c->name;
566 }
567
568 if (!is_ephemeral(port)) {
569 static int notfirst;
570 struct servent *se;
571 if (!notfirst) {
572 setservent(1);
573 notfirst = 1;
574 }
575 se = getservbyport(htons(port), dg_proto);
576 if (se)
577 return se->s_name;
578 }
579
580 return NULL;
581 }
582
583
resolve_service(int port)584 const char *resolve_service(int port)
585 {
586 static char buf[128];
587 static struct scache cache[256];
588
589 if (port == 0) {
590 buf[0] = '*';
591 buf[1] = 0;
592 return buf;
593 }
594
595 if (resolve_services) {
596 if (dg_proto == RAW_PROTO) {
597 return inet_proto_n2a(port, buf, sizeof(buf));
598 } else {
599 struct scache *c;
600 const char *res;
601 int hash = (port^(((unsigned long)dg_proto)>>2))&255;
602
603 for (c = &cache[hash]; c; c = c->next) {
604 if (c->port == port &&
605 c->proto == dg_proto) {
606 if (c->name)
607 return c->name;
608 goto do_numeric;
609 }
610 }
611
612 if ((res = __resolve_service(port)) != NULL) {
613 if ((c = malloc(sizeof(*c))) == NULL)
614 goto do_numeric;
615 } else {
616 c = &cache[hash];
617 if (c->name)
618 free(c->name);
619 }
620 c->port = port;
621 c->name = NULL;
622 c->proto = dg_proto;
623 if (res) {
624 c->name = strdup(res);
625 c->next = cache[hash].next;
626 cache[hash].next = c;
627 }
628 if (c->name)
629 return c->name;
630 }
631 }
632
633 do_numeric:
634 sprintf(buf, "%u", port);
635 return buf;
636 }
637
formatted_print(const inet_prefix * a,int port)638 void formatted_print(const inet_prefix *a, int port)
639 {
640 char buf[1024];
641 const char *ap = buf;
642 int est_len;
643
644 est_len = addr_width;
645
646 if (a->family == AF_INET) {
647 if (a->data[0] == 0) {
648 buf[0] = '*';
649 buf[1] = 0;
650 } else {
651 ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
652 }
653 } else {
654 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
655 est_len = strlen(ap);
656 if (est_len <= addr_width)
657 est_len = addr_width;
658 else
659 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
660 }
661 printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
662 }
663
664 struct aafilter
665 {
666 inet_prefix addr;
667 int port;
668 struct aafilter *next;
669 };
670
inet2_addr_match(const inet_prefix * a,const inet_prefix * p,int plen)671 int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, int plen)
672 {
673 if (!inet_addr_match(a, p, plen))
674 return 0;
675
676 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
677 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
678 * sockets. Fair? */
679 if (p->family == AF_INET && a->family == AF_INET6) {
680 if (a->data[0] == 0 && a->data[1] == 0 &&
681 a->data[2] == htonl(0xffff)) {
682 inet_prefix tmp = *a;
683 tmp.data[0] = a->data[3];
684 return inet_addr_match(&tmp, p, plen);
685 }
686 }
687 return 1;
688 }
689
unix_match(const inet_prefix * a,const inet_prefix * p)690 int unix_match(const inet_prefix *a, const inet_prefix *p)
691 {
692 char *addr, *pattern;
693 memcpy(&addr, a->data, sizeof(addr));
694 memcpy(&pattern, p->data, sizeof(pattern));
695 if (pattern == NULL)
696 return 1;
697 if (addr == NULL)
698 addr = "";
699 return !fnmatch(pattern, addr, 0);
700 }
701
run_ssfilter(struct ssfilter * f,struct tcpstat * s)702 int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
703 {
704 switch (f->type) {
705 case SSF_S_AUTO:
706 {
707 static int low, high=65535;
708
709 if (s->local.family == AF_UNIX) {
710 char *p;
711 memcpy(&p, s->local.data, sizeof(p));
712 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
713 strspn(p+1, "0123456789abcdef") == 5);
714 }
715 if (s->local.family == AF_PACKET)
716 return s->lport == 0 && s->local.data == 0;
717 if (s->local.family == AF_NETLINK)
718 return s->lport < 0;
719
720 if (!low) {
721 FILE *fp = ephemeral_ports_open();
722 if (fp) {
723 fscanf(fp, "%d%d", &low, &high);
724 fclose(fp);
725 }
726 }
727 return s->lport >= low && s->lport <= high;
728 }
729 case SSF_DCOND:
730 {
731 struct aafilter *a = (void*)f->pred;
732 if (a->addr.family == AF_UNIX)
733 return unix_match(&s->remote, &a->addr);
734 if (a->port != -1 && a->port != s->rport)
735 return 0;
736 if (a->addr.bitlen) {
737 do {
738 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
739 return 1;
740 } while ((a = a->next) != NULL);
741 return 0;
742 }
743 return 1;
744 }
745 case SSF_SCOND:
746 {
747 struct aafilter *a = (void*)f->pred;
748 if (a->addr.family == AF_UNIX)
749 return unix_match(&s->local, &a->addr);
750 if (a->port != -1 && a->port != s->lport)
751 return 0;
752 if (a->addr.bitlen) {
753 do {
754 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
755 return 1;
756 } while ((a = a->next) != NULL);
757 return 0;
758 }
759 return 1;
760 }
761 case SSF_D_GE:
762 {
763 struct aafilter *a = (void*)f->pred;
764 return s->rport >= a->port;
765 }
766 case SSF_D_LE:
767 {
768 struct aafilter *a = (void*)f->pred;
769 return s->rport <= a->port;
770 }
771 case SSF_S_GE:
772 {
773 struct aafilter *a = (void*)f->pred;
774 return s->lport >= a->port;
775 }
776 case SSF_S_LE:
777 {
778 struct aafilter *a = (void*)f->pred;
779 return s->lport <= a->port;
780 }
781
782 /* Yup. It is recursion. Sorry. */
783 case SSF_AND:
784 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
785 case SSF_OR:
786 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
787 case SSF_NOT:
788 return !run_ssfilter(f->pred, s);
789 default:
790 abort();
791 }
792 }
793
794 /* Relocate external jumps by reloc. */
ssfilter_patch(char * a,int len,int reloc)795 static void ssfilter_patch(char *a, int len, int reloc)
796 {
797 while (len > 0) {
798 struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a;
799 if (op->no == len+4)
800 op->no += reloc;
801 len -= op->yes;
802 a += op->yes;
803 }
804 if (len < 0)
805 abort();
806 }
807
ssfilter_bytecompile(struct ssfilter * f,char ** bytecode)808 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
809 {
810 switch (f->type) {
811 case SSF_S_AUTO:
812 {
813 if (!(*bytecode=malloc(4))) abort();
814 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
815 return 4;
816 }
817 case SSF_DCOND:
818 case SSF_SCOND:
819 {
820 struct aafilter *a = (void*)f->pred;
821 struct aafilter *b;
822 char *ptr;
823 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
824 int len = 0;
825
826 for (b=a; b; b=b->next) {
827 len += 4 + sizeof(struct inet_diag_hostcond);
828 if (a->addr.family == AF_INET6)
829 len += 16;
830 else
831 len += 4;
832 if (b->next)
833 len += 4;
834 }
835 if (!(ptr = malloc(len))) abort();
836 *bytecode = ptr;
837 for (b=a; b; b=b->next) {
838 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
839 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
840 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
841 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4);
842
843 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
844 cond->family = a->addr.family;
845 cond->port = a->port;
846 cond->prefix_len = a->addr.bitlen;
847 memcpy(cond->addr, a->addr.data, alen);
848 ptr += oplen;
849 if (b->next) {
850 op = (struct inet_diag_bc_op *)ptr;
851 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
852 ptr += 4;
853 }
854 }
855 return ptr - *bytecode;
856 }
857 case SSF_D_GE:
858 {
859 struct aafilter *x = (void*)f->pred;
860 if (!(*bytecode=malloc(8))) abort();
861 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
862 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
863 return 8;
864 }
865 case SSF_D_LE:
866 {
867 struct aafilter *x = (void*)f->pred;
868 if (!(*bytecode=malloc(8))) abort();
869 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
870 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
871 return 8;
872 }
873 case SSF_S_GE:
874 {
875 struct aafilter *x = (void*)f->pred;
876 if (!(*bytecode=malloc(8))) abort();
877 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
878 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
879 return 8;
880 }
881 case SSF_S_LE:
882 {
883 struct aafilter *x = (void*)f->pred;
884 if (!(*bytecode=malloc(8))) abort();
885 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
886 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
887 return 8;
888 }
889
890 case SSF_AND:
891 {
892 char *a1, *a2, *a, l1, l2;
893 l1 = ssfilter_bytecompile(f->pred, &a1);
894 l2 = ssfilter_bytecompile(f->post, &a2);
895 if (!(a = malloc(l1+l2))) abort();
896 memcpy(a, a1, l1);
897 memcpy(a+l1, a2, l2);
898 free(a1); free(a2);
899 ssfilter_patch(a, l1, l2);
900 *bytecode = a;
901 return l1+l2;
902 }
903 case SSF_OR:
904 {
905 char *a1, *a2, *a, l1, l2;
906 l1 = ssfilter_bytecompile(f->pred, &a1);
907 l2 = ssfilter_bytecompile(f->post, &a2);
908 if (!(a = malloc(l1+l2+4))) abort();
909 memcpy(a, a1, l1);
910 memcpy(a+l1+4, a2, l2);
911 free(a1); free(a2);
912 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
913 *bytecode = a;
914 return l1+l2+4;
915 }
916 case SSF_NOT:
917 {
918 char *a1, *a, l1;
919 l1 = ssfilter_bytecompile(f->pred, &a1);
920 if (!(a = malloc(l1+4))) abort();
921 memcpy(a, a1, l1);
922 free(a1);
923 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
924 *bytecode = a;
925 return l1+4;
926 }
927 default:
928 abort();
929 }
930 }
931
remember_he(struct aafilter * a,struct hostent * he)932 static int remember_he(struct aafilter *a, struct hostent *he)
933 {
934 char **ptr = he->h_addr_list;
935 int cnt = 0;
936 int len;
937
938 if (he->h_addrtype == AF_INET)
939 len = 4;
940 else if (he->h_addrtype == AF_INET6)
941 len = 16;
942 else
943 return 0;
944
945 while (*ptr) {
946 struct aafilter *b = a;
947 if (a->addr.bitlen) {
948 if ((b = malloc(sizeof(*b))) == NULL)
949 return cnt;
950 *b = *a;
951 b->next = a->next;
952 a->next = b;
953 }
954 memcpy(b->addr.data, *ptr, len);
955 b->addr.bytelen = len;
956 b->addr.bitlen = len*8;
957 b->addr.family = he->h_addrtype;
958 ptr++;
959 cnt++;
960 }
961 return cnt;
962 }
963
get_dns_host(struct aafilter * a,const char * addr,int fam)964 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
965 {
966 static int notfirst;
967 int cnt = 0;
968 struct hostent *he;
969
970 a->addr.bitlen = 0;
971 if (!notfirst) {
972 sethostent(1);
973 notfirst = 1;
974 }
975 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
976 if (he)
977 cnt = remember_he(a, he);
978 if (fam == AF_UNSPEC) {
979 he = gethostbyname2(addr, AF_INET6);
980 if (he)
981 cnt += remember_he(a, he);
982 }
983 return !cnt;
984 }
985
986 static int xll_initted = 0;
987
xll_init(void)988 static void xll_init(void)
989 {
990 struct rtnl_handle rth;
991 rtnl_open(&rth, 0);
992 ll_init_map(&rth);
993 rtnl_close(&rth);
994 xll_initted = 1;
995 }
996
xll_index_to_name(int index)997 static const char *xll_index_to_name(int index)
998 {
999 if (!xll_initted)
1000 xll_init();
1001 return ll_index_to_name(index);
1002 }
1003
xll_name_to_index(const char * dev)1004 static int xll_name_to_index(const char *dev)
1005 {
1006 if (!xll_initted)
1007 xll_init();
1008 return ll_name_to_index(dev);
1009 }
1010
parse_hostcond(char * addr)1011 void *parse_hostcond(char *addr)
1012 {
1013 char *port = NULL;
1014 struct aafilter a;
1015 struct aafilter *res;
1016 int fam = preferred_family;
1017
1018 memset(&a, 0, sizeof(a));
1019 a.port = -1;
1020
1021 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1022 char *p;
1023 a.addr.family = AF_UNIX;
1024 if (strncmp(addr, "unix:", 5) == 0)
1025 addr+=5;
1026 p = strdup(addr);
1027 a.addr.bitlen = 8*strlen(p);
1028 memcpy(a.addr.data, &p, sizeof(p));
1029 goto out;
1030 }
1031
1032 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1033 a.addr.family = AF_PACKET;
1034 a.addr.bitlen = 0;
1035 if (strncmp(addr, "link:", 5) == 0)
1036 addr+=5;
1037 port = strchr(addr, ':');
1038 if (port) {
1039 *port = 0;
1040 if (port[1] && strcmp(port+1, "*")) {
1041 if (get_integer(&a.port, port+1, 0)) {
1042 if ((a.port = xll_name_to_index(port+1)) <= 0)
1043 return NULL;
1044 }
1045 }
1046 }
1047 if (addr[0] && strcmp(addr, "*")) {
1048 unsigned short tmp;
1049 a.addr.bitlen = 32;
1050 if (ll_proto_a2n(&tmp, addr))
1051 return NULL;
1052 a.addr.data[0] = ntohs(tmp);
1053 }
1054 goto out;
1055 }
1056
1057 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1058 a.addr.family = AF_NETLINK;
1059 a.addr.bitlen = 0;
1060 if (strncmp(addr, "netlink:", 8) == 0)
1061 addr+=8;
1062 port = strchr(addr, ':');
1063 if (port) {
1064 *port = 0;
1065 if (port[1] && strcmp(port+1, "*")) {
1066 if (get_integer(&a.port, port+1, 0)) {
1067 if (strcmp(port+1, "kernel") == 0)
1068 a.port = 0;
1069 else
1070 return NULL;
1071 }
1072 }
1073 }
1074 if (addr[0] && strcmp(addr, "*")) {
1075 a.addr.bitlen = 32;
1076 if (get_u32(a.addr.data, addr, 0)) {
1077 if (strcmp(addr, "rtnl") == 0)
1078 a.addr.data[0] = 0;
1079 else if (strcmp(addr, "fw") == 0)
1080 a.addr.data[0] = 3;
1081 else if (strcmp(addr, "tcpdiag") == 0)
1082 a.addr.data[0] = 4;
1083 else
1084 return NULL;
1085 }
1086 }
1087 goto out;
1088 }
1089
1090 if (strncmp(addr, "inet:", 5) == 0) {
1091 addr += 5;
1092 fam = AF_INET;
1093 } else if (strncmp(addr, "inet6:", 6) == 0) {
1094 addr += 6;
1095 fam = AF_INET6;
1096 }
1097
1098 /* URL-like literal [] */
1099 if (addr[0] == '[') {
1100 addr++;
1101 if ((port = strchr(addr, ']')) == NULL)
1102 return NULL;
1103 *port++ = 0;
1104 } else if (addr[0] == '*') {
1105 port = addr+1;
1106 } else {
1107 port = strrchr(strchr(addr, '/') ? : addr, ':');
1108 }
1109 if (port && *port) {
1110 if (*port != ':')
1111 return NULL;
1112 *port++ = 0;
1113 if (*port && *port != '*') {
1114 if (get_integer(&a.port, port, 0)) {
1115 struct servent *se1 = NULL;
1116 struct servent *se2 = NULL;
1117 if (current_filter.dbs&(1<<UDP_DB))
1118 se1 = getservbyname(port, UDP_PROTO);
1119 if (current_filter.dbs&(1<<TCP_DB))
1120 se2 = getservbyname(port, TCP_PROTO);
1121 if (se1 && se2 && se1->s_port != se2->s_port) {
1122 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1123 return NULL;
1124 }
1125 if (!se1)
1126 se1 = se2;
1127 if (se1) {
1128 a.port = ntohs(se1->s_port);
1129 } else {
1130 struct scache *s;
1131 for (s = rlist; s; s = s->next) {
1132 if ((s->proto == UDP_PROTO &&
1133 (current_filter.dbs&(1<<UDP_DB))) ||
1134 (s->proto == TCP_PROTO &&
1135 (current_filter.dbs&(1<<TCP_DB)))) {
1136 if (s->name && strcmp(s->name, port) == 0) {
1137 if (a.port > 0 && a.port != s->port) {
1138 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1139 return NULL;
1140 }
1141 a.port = s->port;
1142 }
1143 }
1144 }
1145 if (a.port <= 0) {
1146 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1147 return NULL;
1148 }
1149 }
1150 }
1151 }
1152 }
1153 if (addr && *addr && *addr != '*') {
1154 if (get_prefix_1(&a.addr, addr, fam)) {
1155 if (get_dns_host(&a, addr, fam)) {
1156 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1157 return NULL;
1158 }
1159 }
1160 }
1161
1162 out:
1163 res = malloc(sizeof(*res));
1164 if (res)
1165 memcpy(res, &a, sizeof(a));
1166 return res;
1167 }
1168
tcp_show_line(char * line,const struct filter * f,int family)1169 static int tcp_show_line(char *line, const struct filter *f, int family)
1170 {
1171 struct tcpstat s;
1172 char *loc, *rem, *data;
1173 char opt[256];
1174 int n;
1175 char *p;
1176
1177 if ((p = strchr(line, ':')) == NULL)
1178 return -1;
1179 loc = p+2;
1180
1181 if ((p = strchr(loc, ':')) == NULL)
1182 return -1;
1183 p[5] = 0;
1184 rem = p+6;
1185
1186 if ((p = strchr(rem, ':')) == NULL)
1187 return -1;
1188 p[5] = 0;
1189 data = p+6;
1190
1191 do {
1192 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1193
1194 if (!(f->states & (1<<state)))
1195 return 0;
1196 } while (0);
1197
1198 s.local.family = s.remote.family = family;
1199 if (family == AF_INET) {
1200 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1201 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1202 s.local.bytelen = s.remote.bytelen = 4;
1203 } else {
1204 sscanf(loc, "%08x%08x%08x%08x:%x",
1205 s.local.data,
1206 s.local.data+1,
1207 s.local.data+2,
1208 s.local.data+3,
1209 &s.lport);
1210 sscanf(rem, "%08x%08x%08x%08x:%x",
1211 s.remote.data,
1212 s.remote.data+1,
1213 s.remote.data+2,
1214 s.remote.data+3,
1215 &s.rport);
1216 s.local.bytelen = s.remote.bytelen = 16;
1217 }
1218
1219 if (f->f && run_ssfilter(f->f, &s) == 0)
1220 return 0;
1221
1222 opt[0] = 0;
1223 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n",
1224 &s.state, &s.wq, &s.rq,
1225 &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1226 &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1227 &s.cwnd, &s.ssthresh, opt);
1228
1229 if (n < 17)
1230 opt[0] = 0;
1231
1232 if (n < 12) {
1233 s.rto = 0;
1234 s.cwnd = 2;
1235 s.ssthresh = -1;
1236 s.ato = s.qack = 0;
1237 }
1238
1239 if (netid_width)
1240 printf("%-*s ", netid_width, "tcp");
1241 if (state_width)
1242 printf("%-*s ", state_width, sstate_name[s.state]);
1243
1244 printf("%-6d %-6d ", s.rq, s.wq);
1245
1246 formatted_print(&s.local, s.lport);
1247 formatted_print(&s.remote, s.rport);
1248
1249 if (show_options) {
1250 if (s.timer) {
1251 if (s.timer > 4)
1252 s.timer = 5;
1253 printf(" timer:(%s,%s,%d)",
1254 tmr_name[s.timer],
1255 print_hz_timer(s.timeout),
1256 s.timer != 1 ? s.probes : s.retrs);
1257 }
1258 }
1259 if (show_tcpinfo) {
1260 int hz = get_user_hz();
1261 if (s.rto && s.rto != 3*hz)
1262 printf(" rto:%g", (double)s.rto/hz);
1263 if (s.ato)
1264 printf(" ato:%g", (double)s.ato/hz);
1265 if (s.cwnd != 2)
1266 printf(" cwnd:%d", s.cwnd);
1267 if (s.ssthresh != -1)
1268 printf(" ssthresh:%d", s.ssthresh);
1269 if (s.qack/2)
1270 printf(" qack:%d", s.qack/2);
1271 if (s.qack&1)
1272 printf(" bidir");
1273 }
1274 if (show_users) {
1275 char ubuf[4096];
1276 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1277 printf(" users:(%s)", ubuf);
1278 }
1279 if (show_details) {
1280 if (s.uid)
1281 printf(" uid:%u", (unsigned)s.uid);
1282 printf(" ino:%u", s.ino);
1283 printf(" sk:%llx", s.sk);
1284 if (opt[0])
1285 printf(" opt:\"%s\"", opt);
1286 }
1287 printf("\n");
1288
1289 return 0;
1290 }
1291
generic_record_read(FILE * fp,int (* worker)(char *,const struct filter *,int),const struct filter * f,int fam)1292 static int generic_record_read(FILE *fp,
1293 int (*worker)(char*, const struct filter *, int),
1294 const struct filter *f, int fam)
1295 {
1296 char line[256];
1297
1298 /* skip header */
1299 if (fgets(line, sizeof(line), fp) == NULL)
1300 goto outerr;
1301
1302 while (fgets(line, sizeof(line), fp) != NULL) {
1303 int n = strlen(line);
1304 if (n == 0 || line[n-1] != '\n') {
1305 errno = -EINVAL;
1306 return -1;
1307 }
1308 line[n-1] = 0;
1309
1310 if (worker(line, f, fam) < 0)
1311 return 0;
1312 }
1313 outerr:
1314
1315 return ferror(fp) ? -1 : 0;
1316 }
1317
sprint_bw(char * buf,double bw)1318 static char *sprint_bw(char *buf, double bw)
1319 {
1320 if (bw > 1000000.)
1321 sprintf(buf,"%.1fM", bw / 1000000.);
1322 else if (bw > 1000.)
1323 sprintf(buf,"%.1fK", bw / 1000.);
1324 else
1325 sprintf(buf, "%g", bw);
1326
1327 return buf;
1328 }
1329
tcp_show_info(const struct nlmsghdr * nlh,struct inet_diag_msg * r)1330 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r)
1331 {
1332 struct rtattr * tb[INET_DIAG_MAX+1];
1333 char b1[64];
1334 double rtt = 0;
1335
1336 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
1337 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1338
1339 if (tb[INET_DIAG_SKMEMINFO]) {
1340 const __u32 *skmeminfo = RTA_DATA(tb[INET_DIAG_SKMEMINFO]);
1341 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u)",
1342 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
1343 skmeminfo[SK_MEMINFO_RCVBUF],
1344 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
1345 skmeminfo[SK_MEMINFO_SNDBUF],
1346 skmeminfo[SK_MEMINFO_FWD_ALLOC],
1347 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
1348 skmeminfo[SK_MEMINFO_OPTMEM]);
1349 }else if (tb[INET_DIAG_MEMINFO]) {
1350 const struct inet_diag_meminfo *minfo
1351 = RTA_DATA(tb[INET_DIAG_MEMINFO]);
1352 printf(" mem:(r%u,w%u,f%u,t%u)",
1353 minfo->idiag_rmem,
1354 minfo->idiag_wmem,
1355 minfo->idiag_fmem,
1356 minfo->idiag_tmem);
1357 }
1358
1359 if (tb[INET_DIAG_INFO]) {
1360 struct tcp_info *info;
1361 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
1362
1363 /* workaround for older kernels with less fields */
1364 if (len < sizeof(*info)) {
1365 info = alloca(sizeof(*info));
1366 memset(info, 0, sizeof(*info));
1367 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
1368 } else
1369 info = RTA_DATA(tb[INET_DIAG_INFO]);
1370
1371 if (show_options) {
1372 if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1373 printf(" ts");
1374 if (info->tcpi_options & TCPI_OPT_SACK)
1375 printf(" sack");
1376 if (info->tcpi_options & TCPI_OPT_ECN)
1377 printf(" ecn");
1378 if (info->tcpi_options & TCPI_OPT_ECN_SEEN)
1379 printf(" ecnseen");
1380 }
1381
1382 if (tb[INET_DIAG_CONG])
1383 printf(" %s", rta_getattr_str(tb[INET_DIAG_CONG]));
1384
1385 if (info->tcpi_options & TCPI_OPT_WSCALE)
1386 printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1387 info->tcpi_rcv_wscale);
1388 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1389 printf(" rto:%g", (double)info->tcpi_rto/1000);
1390 if (info->tcpi_rtt)
1391 printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1392 (double)info->tcpi_rttvar/1000);
1393 if (info->tcpi_ato)
1394 printf(" ato:%g", (double)info->tcpi_ato/1000);
1395 if (info->tcpi_snd_cwnd != 2)
1396 printf(" cwnd:%d", info->tcpi_snd_cwnd);
1397 if (info->tcpi_snd_ssthresh < 0xFFFF)
1398 printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
1399
1400 rtt = (double) info->tcpi_rtt;
1401 if (tb[INET_DIAG_VEGASINFO]) {
1402 const struct tcpvegas_info *vinfo
1403 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
1404
1405 if (vinfo->tcpv_enabled &&
1406 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1407 rtt = vinfo->tcpv_rtt;
1408 }
1409
1410 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1411 printf(" send %sbps",
1412 sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1413 (double) info->tcpi_snd_mss * 8000000.
1414 / rtt));
1415 }
1416
1417 if (info->tcpi_rcv_rtt)
1418 printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1419 if (info->tcpi_rcv_space)
1420 printf(" rcv_space:%d", info->tcpi_rcv_space);
1421
1422 }
1423 }
1424
tcp_show_sock(struct nlmsghdr * nlh,struct filter * f)1425 static int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f)
1426 {
1427 struct inet_diag_msg *r = NLMSG_DATA(nlh);
1428 struct tcpstat s;
1429
1430 s.state = r->idiag_state;
1431 s.local.family = s.remote.family = r->idiag_family;
1432 s.lport = ntohs(r->id.idiag_sport);
1433 s.rport = ntohs(r->id.idiag_dport);
1434 if (s.local.family == AF_INET) {
1435 s.local.bytelen = s.remote.bytelen = 4;
1436 } else {
1437 s.local.bytelen = s.remote.bytelen = 16;
1438 }
1439 memcpy(s.local.data, r->id.idiag_src, s.local.bytelen);
1440 memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen);
1441
1442 if (f && f->f && run_ssfilter(f->f, &s) == 0)
1443 return 0;
1444
1445 if (netid_width)
1446 printf("%-*s ", netid_width, "tcp");
1447 if (state_width)
1448 printf("%-*s ", state_width, sstate_name[s.state]);
1449
1450 printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue);
1451
1452 formatted_print(&s.local, s.lport);
1453 formatted_print(&s.remote, s.rport);
1454
1455 if (show_options) {
1456 if (r->idiag_timer) {
1457 if (r->idiag_timer > 4)
1458 r->idiag_timer = 5;
1459 printf(" timer:(%s,%s,%d)",
1460 tmr_name[r->idiag_timer],
1461 print_ms_timer(r->idiag_expires),
1462 r->idiag_retrans);
1463 }
1464 }
1465 if (show_users) {
1466 char ubuf[4096];
1467 if (find_users(r->idiag_inode, ubuf, sizeof(ubuf)) > 0)
1468 printf(" users:(%s)", ubuf);
1469 }
1470 if (show_details) {
1471 if (r->idiag_uid)
1472 printf(" uid:%u", (unsigned)r->idiag_uid);
1473 printf(" ino:%u", r->idiag_inode);
1474 printf(" sk:");
1475 if (r->id.idiag_cookie[1] != 0)
1476 printf("%08x", r->id.idiag_cookie[1]);
1477 printf("%08x", r->id.idiag_cookie[0]);
1478 }
1479 if (show_mem || show_tcpinfo) {
1480 printf("\n\t");
1481 tcp_show_info(nlh, r);
1482 }
1483
1484 printf("\n");
1485
1486 return 0;
1487 }
1488
tcp_show_netlink(struct filter * f,FILE * dump_fp,int socktype)1489 static int tcp_show_netlink(struct filter *f, FILE *dump_fp, int socktype)
1490 {
1491 int fd;
1492 struct sockaddr_nl nladdr;
1493 struct {
1494 struct nlmsghdr nlh;
1495 struct inet_diag_req r;
1496 } req;
1497 char *bc = NULL;
1498 int bclen;
1499 struct msghdr msg;
1500 struct rtattr rta;
1501 char buf[8192];
1502 struct iovec iov[3];
1503
1504 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
1505 return -1;
1506
1507 memset(&nladdr, 0, sizeof(nladdr));
1508 nladdr.nl_family = AF_NETLINK;
1509
1510 req.nlh.nlmsg_len = sizeof(req);
1511 req.nlh.nlmsg_type = socktype;
1512 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1513 req.nlh.nlmsg_pid = 0;
1514 req.nlh.nlmsg_seq = 123456;
1515 memset(&req.r, 0, sizeof(req.r));
1516 req.r.idiag_family = AF_INET;
1517 req.r.idiag_states = f->states;
1518 if (show_mem) {
1519 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
1520 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
1521 }
1522
1523 if (show_tcpinfo) {
1524 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1525 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1526 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
1527 }
1528
1529 iov[0] = (struct iovec){
1530 .iov_base = &req,
1531 .iov_len = sizeof(req)
1532 };
1533 if (f->f) {
1534 bclen = ssfilter_bytecompile(f->f, &bc);
1535 rta.rta_type = INET_DIAG_REQ_BYTECODE;
1536 rta.rta_len = RTA_LENGTH(bclen);
1537 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1538 iov[2] = (struct iovec){ bc, bclen };
1539 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1540 }
1541
1542 msg = (struct msghdr) {
1543 .msg_name = (void*)&nladdr,
1544 .msg_namelen = sizeof(nladdr),
1545 .msg_iov = iov,
1546 .msg_iovlen = f->f ? 3 : 1,
1547 };
1548
1549 if (sendmsg(fd, &msg, 0) < 0) {
1550 close(fd);
1551 return -1;
1552 }
1553
1554 iov[0] = (struct iovec){
1555 .iov_base = buf,
1556 .iov_len = sizeof(buf)
1557 };
1558
1559 while (1) {
1560 int status;
1561 struct nlmsghdr *h;
1562
1563 msg = (struct msghdr) {
1564 (void*)&nladdr, sizeof(nladdr),
1565 iov, 1,
1566 NULL, 0,
1567 0
1568 };
1569
1570 status = recvmsg(fd, &msg, 0);
1571
1572 if (status < 0) {
1573 if (errno == EINTR)
1574 continue;
1575 perror("OVERRUN");
1576 continue;
1577 }
1578 if (status == 0) {
1579 fprintf(stderr, "EOF on netlink\n");
1580 close(fd);
1581 return 0;
1582 }
1583
1584 if (dump_fp)
1585 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1586
1587 h = (struct nlmsghdr*)buf;
1588 while (NLMSG_OK(h, status)) {
1589 int err;
1590 struct inet_diag_msg *r = NLMSG_DATA(h);
1591
1592 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1593 h->nlmsg_seq != 123456)
1594 goto skip_it;
1595
1596 if (h->nlmsg_type == NLMSG_DONE) {
1597 close(fd);
1598 return 0;
1599 }
1600 if (h->nlmsg_type == NLMSG_ERROR) {
1601 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1602 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1603 fprintf(stderr, "ERROR truncated\n");
1604 } else {
1605 errno = -err->error;
1606 if (errno == EOPNOTSUPP) {
1607 close(fd);
1608 return -1;
1609 }
1610 perror("TCPDIAG answers");
1611 }
1612 close(fd);
1613 return 0;
1614 }
1615 if (!dump_fp) {
1616 if (!(f->families & (1<<r->idiag_family))) {
1617 h = NLMSG_NEXT(h, status);
1618 continue;
1619 }
1620 err = tcp_show_sock(h, NULL);
1621 if (err < 0) {
1622 close(fd);
1623 return err;
1624 }
1625 }
1626
1627 skip_it:
1628 h = NLMSG_NEXT(h, status);
1629 }
1630 if (msg.msg_flags & MSG_TRUNC) {
1631 fprintf(stderr, "Message truncated\n");
1632 continue;
1633 }
1634 if (status) {
1635 fprintf(stderr, "!!!Remnant of size %d\n", status);
1636 exit(1);
1637 }
1638 }
1639 close(fd);
1640 return 0;
1641 }
1642
tcp_show_netlink_file(struct filter * f)1643 static int tcp_show_netlink_file(struct filter *f)
1644 {
1645 FILE *fp;
1646 char buf[8192];
1647
1648 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1649 perror("fopen($TCPDIAG_FILE)");
1650 return -1;
1651 }
1652
1653 while (1) {
1654 int status, err;
1655 struct nlmsghdr *h = (struct nlmsghdr*)buf;
1656
1657 status = fread(buf, 1, sizeof(*h), fp);
1658 if (status < 0) {
1659 perror("Reading header from $TCPDIAG_FILE");
1660 return -1;
1661 }
1662 if (status != sizeof(*h)) {
1663 perror("Unexpected EOF reading $TCPDIAG_FILE");
1664 return -1;
1665 }
1666
1667 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
1668
1669 if (status < 0) {
1670 perror("Reading $TCPDIAG_FILE");
1671 return -1;
1672 }
1673 if (status + sizeof(*h) < h->nlmsg_len) {
1674 perror("Unexpected EOF reading $TCPDIAG_FILE");
1675 return -1;
1676 }
1677
1678 /* The only legal exit point */
1679 if (h->nlmsg_type == NLMSG_DONE)
1680 return 0;
1681
1682 if (h->nlmsg_type == NLMSG_ERROR) {
1683 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1684 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1685 fprintf(stderr, "ERROR truncated\n");
1686 } else {
1687 errno = -err->error;
1688 perror("TCPDIAG answered");
1689 }
1690 return -1;
1691 }
1692
1693 err = tcp_show_sock(h, f);
1694 if (err < 0)
1695 return err;
1696 }
1697 }
1698
tcp_show(struct filter * f,int socktype)1699 static int tcp_show(struct filter *f, int socktype)
1700 {
1701 FILE *fp = NULL;
1702 char *buf = NULL;
1703 int bufsize = 64*1024;
1704
1705 dg_proto = TCP_PROTO;
1706
1707 if (getenv("TCPDIAG_FILE"))
1708 return tcp_show_netlink_file(f);
1709
1710 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
1711 && tcp_show_netlink(f, NULL, socktype) == 0)
1712 return 0;
1713
1714 /* Sigh... We have to parse /proc/net/tcp... */
1715
1716
1717 /* Estimate amount of sockets and try to allocate
1718 * huge buffer to read all the table at one read.
1719 * Limit it by 16MB though. The assumption is: as soon as
1720 * kernel was able to hold information about N connections,
1721 * it is able to give us some memory for snapshot.
1722 */
1723 if (1) {
1724 int guess = slabstat.socks+slabstat.tcp_syns;
1725 if (f->states&(1<<SS_TIME_WAIT))
1726 guess += slabstat.tcp_tws;
1727 if (guess > (16*1024*1024)/128)
1728 guess = (16*1024*1024)/128;
1729 guess *= 128;
1730 if (guess > bufsize)
1731 bufsize = guess;
1732 }
1733 while (bufsize >= 64*1024) {
1734 if ((buf = malloc(bufsize)) != NULL)
1735 break;
1736 bufsize /= 2;
1737 }
1738 if (buf == NULL) {
1739 errno = ENOMEM;
1740 return -1;
1741 }
1742
1743 if (f->families & (1<<AF_INET)) {
1744 if ((fp = net_tcp_open()) == NULL)
1745 goto outerr;
1746
1747 setbuffer(fp, buf, bufsize);
1748 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
1749 goto outerr;
1750 fclose(fp);
1751 }
1752
1753 if ((f->families & (1<<AF_INET6)) &&
1754 (fp = net_tcp6_open()) != NULL) {
1755 setbuffer(fp, buf, bufsize);
1756 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
1757 goto outerr;
1758 fclose(fp);
1759 }
1760
1761 free(buf);
1762 return 0;
1763
1764 outerr:
1765 do {
1766 int saved_errno = errno;
1767 if (buf)
1768 free(buf);
1769 if (fp)
1770 fclose(fp);
1771 errno = saved_errno;
1772 return -1;
1773 } while (0);
1774 }
1775
1776
dgram_show_line(char * line,const struct filter * f,int family)1777 int dgram_show_line(char *line, const struct filter *f, int family)
1778 {
1779 struct tcpstat s;
1780 char *loc, *rem, *data;
1781 char opt[256];
1782 int n;
1783 char *p;
1784
1785 if ((p = strchr(line, ':')) == NULL)
1786 return -1;
1787 loc = p+2;
1788
1789 if ((p = strchr(loc, ':')) == NULL)
1790 return -1;
1791 p[5] = 0;
1792 rem = p+6;
1793
1794 if ((p = strchr(rem, ':')) == NULL)
1795 return -1;
1796 p[5] = 0;
1797 data = p+6;
1798
1799 do {
1800 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1801
1802 if (!(f->states & (1<<state)))
1803 return 0;
1804 } while (0);
1805
1806 s.local.family = s.remote.family = family;
1807 if (family == AF_INET) {
1808 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1809 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1810 s.local.bytelen = s.remote.bytelen = 4;
1811 } else {
1812 sscanf(loc, "%08x%08x%08x%08x:%x",
1813 s.local.data,
1814 s.local.data+1,
1815 s.local.data+2,
1816 s.local.data+3,
1817 &s.lport);
1818 sscanf(rem, "%08x%08x%08x%08x:%x",
1819 s.remote.data,
1820 s.remote.data+1,
1821 s.remote.data+2,
1822 s.remote.data+3,
1823 &s.rport);
1824 s.local.bytelen = s.remote.bytelen = 16;
1825 }
1826
1827 if (f->f && run_ssfilter(f->f, &s) == 0)
1828 return 0;
1829
1830 opt[0] = 0;
1831 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
1832 &s.state, &s.wq, &s.rq,
1833 &s.uid, &s.ino,
1834 &s.refcnt, &s.sk, opt);
1835
1836 if (n < 9)
1837 opt[0] = 0;
1838
1839 if (netid_width)
1840 printf("%-*s ", netid_width, dg_proto);
1841 if (state_width)
1842 printf("%-*s ", state_width, sstate_name[s.state]);
1843
1844 printf("%-6d %-6d ", s.rq, s.wq);
1845
1846 formatted_print(&s.local, s.lport);
1847 formatted_print(&s.remote, s.rport);
1848
1849 if (show_users) {
1850 char ubuf[4096];
1851 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1852 printf(" users:(%s)", ubuf);
1853 }
1854
1855 if (show_details) {
1856 if (s.uid)
1857 printf(" uid=%u", (unsigned)s.uid);
1858 printf(" ino=%u", s.ino);
1859 printf(" sk=%llx", s.sk);
1860 if (opt[0])
1861 printf(" opt:\"%s\"", opt);
1862 }
1863 printf("\n");
1864
1865 return 0;
1866 }
1867
1868
udp_show(struct filter * f)1869 int udp_show(struct filter *f)
1870 {
1871 FILE *fp = NULL;
1872
1873 dg_proto = UDP_PROTO;
1874
1875 if (f->families&(1<<AF_INET)) {
1876 if ((fp = net_udp_open()) == NULL)
1877 goto outerr;
1878 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1879 goto outerr;
1880 fclose(fp);
1881 }
1882
1883 if ((f->families&(1<<AF_INET6)) &&
1884 (fp = net_udp6_open()) != NULL) {
1885 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1886 goto outerr;
1887 fclose(fp);
1888 }
1889 return 0;
1890
1891 outerr:
1892 do {
1893 int saved_errno = errno;
1894 if (fp)
1895 fclose(fp);
1896 errno = saved_errno;
1897 return -1;
1898 } while (0);
1899 }
1900
raw_show(struct filter * f)1901 int raw_show(struct filter *f)
1902 {
1903 FILE *fp = NULL;
1904
1905 dg_proto = RAW_PROTO;
1906
1907 if (f->families&(1<<AF_INET)) {
1908 if ((fp = net_raw_open()) == NULL)
1909 goto outerr;
1910 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1911 goto outerr;
1912 fclose(fp);
1913 }
1914
1915 if ((f->families&(1<<AF_INET6)) &&
1916 (fp = net_raw6_open()) != NULL) {
1917 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1918 goto outerr;
1919 fclose(fp);
1920 }
1921 return 0;
1922
1923 outerr:
1924 do {
1925 int saved_errno = errno;
1926 if (fp)
1927 fclose(fp);
1928 errno = saved_errno;
1929 return -1;
1930 } while (0);
1931 }
1932
1933
1934 struct unixstat
1935 {
1936 struct unixstat *next;
1937 int ino;
1938 int peer;
1939 int rq;
1940 int wq;
1941 int state;
1942 int type;
1943 char *name;
1944 };
1945
1946
1947
1948 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
1949 SS_ESTABLISHED, SS_CLOSING };
1950
1951
1952 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
1953
unix_list_free(struct unixstat * list)1954 void unix_list_free(struct unixstat *list)
1955 {
1956 while (list) {
1957 struct unixstat *s = list;
1958 list = list->next;
1959 if (s->name)
1960 free(s->name);
1961 free(s);
1962 }
1963 }
1964
unix_list_print(struct unixstat * list,struct filter * f)1965 void unix_list_print(struct unixstat *list, struct filter *f)
1966 {
1967 struct unixstat *s;
1968 char *peer;
1969
1970 for (s = list; s; s = s->next) {
1971 if (!(f->states & (1<<s->state)))
1972 continue;
1973 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
1974 continue;
1975 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
1976 continue;
1977
1978 peer = "*";
1979 if (s->peer) {
1980 struct unixstat *p;
1981 for (p = list; p; p = p->next) {
1982 if (s->peer == p->ino)
1983 break;
1984 }
1985 if (!p) {
1986 peer = "?";
1987 } else {
1988 peer = p->name ? : "*";
1989 }
1990 }
1991
1992 if (f->f) {
1993 struct tcpstat tst;
1994 tst.local.family = AF_UNIX;
1995 tst.remote.family = AF_UNIX;
1996 memcpy(tst.local.data, &s->name, sizeof(s->name));
1997 if (strcmp(peer, "*") == 0)
1998 memset(tst.remote.data, 0, sizeof(peer));
1999 else
2000 memcpy(tst.remote.data, &peer, sizeof(peer));
2001 if (run_ssfilter(f->f, &tst) == 0)
2002 continue;
2003 }
2004
2005 if (netid_width)
2006 printf("%-*s ", netid_width,
2007 s->type == SOCK_STREAM ? "u_str" : "u_dgr");
2008 if (state_width)
2009 printf("%-*s ", state_width, sstate_name[s->state]);
2010 printf("%-6d %-6d ", s->rq, s->wq);
2011 printf("%*s %-*d %*s %-*d",
2012 addr_width, s->name ? : "*", serv_width, s->ino,
2013 addr_width, peer, serv_width, s->peer);
2014 if (show_users) {
2015 char ubuf[4096];
2016 if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0)
2017 printf(" users:(%s)", ubuf);
2018 }
2019 printf("\n");
2020 }
2021 }
2022
unix_show_sock(struct nlmsghdr * nlh,struct filter * f)2023 static int unix_show_sock(struct nlmsghdr *nlh, struct filter *f)
2024 {
2025 struct unix_diag_msg *r = NLMSG_DATA(nlh);
2026 struct rtattr *tb[UNIX_DIAG_MAX+1];
2027 char name[128];
2028 int peer_ino;
2029 int rqlen;
2030
2031 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr*)(r+1),
2032 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2033
2034 if (netid_width)
2035 printf("%-*s ", netid_width,
2036 r->udiag_type == SOCK_STREAM ? "u_str" : "u_dgr");
2037 if (state_width)
2038 printf("%-*s ", state_width, sstate_name[r->udiag_state]);
2039
2040 if (tb[UNIX_DIAG_RQLEN])
2041 rqlen = *(int *)RTA_DATA(tb[UNIX_DIAG_RQLEN]);
2042 else
2043 rqlen = 0;
2044
2045 printf("%-6d %-6d ", rqlen, 0);
2046
2047 if (tb[UNIX_DIAG_NAME]) {
2048 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
2049
2050 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
2051 name[len] = '\0';
2052 if (name[0] == '\0')
2053 name[0] = '@';
2054 } else
2055 sprintf(name, "*");
2056
2057 if (tb[UNIX_DIAG_PEER])
2058 peer_ino = *(int *)RTA_DATA(tb[UNIX_DIAG_PEER]);
2059 else
2060 peer_ino = 0;
2061
2062 printf("%*s %-*d %*s %-*d",
2063 addr_width, name,
2064 serv_width, r->udiag_ino,
2065 addr_width, "*", /* FIXME */
2066 serv_width, peer_ino);
2067
2068 if (show_users) {
2069 char ubuf[4096];
2070 if (find_users(r->udiag_ino, ubuf, sizeof(ubuf)) > 0)
2071 printf(" users:(%s)", ubuf);
2072 }
2073
2074 printf("\n");
2075
2076 return 0;
2077 }
2078
unix_show_netlink(struct filter * f,FILE * dump_fp)2079 static int unix_show_netlink(struct filter *f, FILE *dump_fp)
2080 {
2081 int fd;
2082 struct {
2083 struct nlmsghdr nlh;
2084 struct unix_diag_req r;
2085 } req;
2086 char buf[8192];
2087
2088 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
2089 return -1;
2090
2091 memset(&req, 0, sizeof(req));
2092 req.nlh.nlmsg_len = sizeof(req);
2093 req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY;
2094 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
2095 req.nlh.nlmsg_seq = 123456;
2096
2097 req.r.sdiag_family = AF_UNIX;
2098 req.r.udiag_states = f->states;
2099 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
2100
2101 if (send(fd, &req, sizeof(req), 0) < 0) {
2102 close(fd);
2103 return -1;
2104 }
2105
2106 while (1) {
2107 ssize_t status;
2108 struct nlmsghdr *h;
2109 struct sockaddr_nl nladdr;
2110 socklen_t slen = sizeof(nladdr);
2111
2112 status = recvfrom(fd, buf, sizeof(buf), 0,
2113 (struct sockaddr *) &nladdr, &slen);
2114 if (status < 0) {
2115 if (errno == EINTR)
2116 continue;
2117 perror("OVERRUN");
2118 continue;
2119 }
2120 if (status == 0) {
2121 fprintf(stderr, "EOF on netlink\n");
2122 goto close_it;
2123 }
2124
2125 if (dump_fp)
2126 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
2127
2128 h = (struct nlmsghdr*)buf;
2129 while (NLMSG_OK(h, status)) {
2130 int err;
2131
2132 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
2133 h->nlmsg_seq != 123456)
2134 goto skip_it;
2135
2136 if (h->nlmsg_type == NLMSG_DONE)
2137 goto close_it;
2138
2139 if (h->nlmsg_type == NLMSG_ERROR) {
2140 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
2141 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2142 fprintf(stderr, "ERROR truncated\n");
2143 } else {
2144 errno = -err->error;
2145 if (errno != ENOENT)
2146 fprintf(stderr, "UDIAG answers %d\n", errno);
2147 }
2148 close(fd);
2149 return -1;
2150 }
2151 if (!dump_fp) {
2152 err = unix_show_sock(h, f);
2153 if (err < 0) {
2154 close(fd);
2155 return err;
2156 }
2157 }
2158
2159 skip_it:
2160 h = NLMSG_NEXT(h, status);
2161 }
2162
2163 if (status) {
2164 fprintf(stderr, "!!!Remnant of size %zd\n", status);
2165 exit(1);
2166 }
2167 }
2168
2169 close_it:
2170 close(fd);
2171 return 0;
2172 }
2173
unix_show(struct filter * f)2174 int unix_show(struct filter *f)
2175 {
2176 FILE *fp;
2177 char buf[256];
2178 char name[128];
2179 int newformat = 0;
2180 int cnt;
2181 struct unixstat *list = NULL;
2182
2183 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
2184 && unix_show_netlink(f, NULL) == 0)
2185 return 0;
2186
2187 if ((fp = net_unix_open()) == NULL)
2188 return -1;
2189 fgets(buf, sizeof(buf)-1, fp);
2190
2191 if (memcmp(buf, "Peer", 4) == 0)
2192 newformat = 1;
2193 cnt = 0;
2194
2195 while (fgets(buf, sizeof(buf)-1, fp)) {
2196 struct unixstat *u, **insp;
2197 int flags;
2198
2199 if (!(u = malloc(sizeof(*u))))
2200 break;
2201 u->name = NULL;
2202
2203 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
2204 &u->peer, &u->rq, &u->wq, &flags, &u->type,
2205 &u->state, &u->ino, name) < 8)
2206 name[0] = 0;
2207
2208 if (flags&(1<<16)) {
2209 u->state = SS_LISTEN;
2210 } else {
2211 u->state = unix_state_map[u->state-1];
2212 if (u->type == SOCK_DGRAM &&
2213 u->state == SS_CLOSE &&
2214 u->peer)
2215 u->state = SS_ESTABLISHED;
2216 }
2217
2218 if (!newformat) {
2219 u->peer = 0;
2220 u->rq = 0;
2221 u->wq = 0;
2222 }
2223
2224 insp = &list;
2225 while (*insp) {
2226 if (u->type < (*insp)->type ||
2227 (u->type == (*insp)->type &&
2228 u->ino < (*insp)->ino))
2229 break;
2230 insp = &(*insp)->next;
2231 }
2232 u->next = *insp;
2233 *insp = u;
2234
2235 if (name[0]) {
2236 if ((u->name = malloc(strlen(name)+1)) == NULL)
2237 break;
2238 strcpy(u->name, name);
2239 }
2240 if (++cnt > MAX_UNIX_REMEMBER) {
2241 unix_list_print(list, f);
2242 unix_list_free(list);
2243 list = NULL;
2244 cnt = 0;
2245 }
2246 }
2247 fclose(fp);
2248 if (list) {
2249 unix_list_print(list, f);
2250 unix_list_free(list);
2251 list = NULL;
2252 cnt = 0;
2253 }
2254
2255 return 0;
2256 }
2257
2258
packet_show(struct filter * f)2259 int packet_show(struct filter *f)
2260 {
2261 FILE *fp;
2262 char buf[256];
2263 int type;
2264 int prot;
2265 int iface;
2266 int state;
2267 int rq;
2268 int uid;
2269 int ino;
2270 unsigned long long sk;
2271
2272 if (!(f->states & (1<<SS_CLOSE)))
2273 return 0;
2274
2275 if ((fp = net_packet_open()) == NULL)
2276 return -1;
2277 fgets(buf, sizeof(buf)-1, fp);
2278
2279 while (fgets(buf, sizeof(buf)-1, fp)) {
2280 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2281 &sk,
2282 &type, &prot, &iface, &state,
2283 &rq, &uid, &ino);
2284
2285 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2286 continue;
2287 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2288 continue;
2289 if (f->f) {
2290 struct tcpstat tst;
2291 tst.local.family = AF_PACKET;
2292 tst.remote.family = AF_PACKET;
2293 tst.rport = 0;
2294 tst.lport = iface;
2295 tst.local.data[0] = prot;
2296 tst.remote.data[0] = 0;
2297 if (run_ssfilter(f->f, &tst) == 0)
2298 continue;
2299 }
2300
2301 if (netid_width)
2302 printf("%-*s ", netid_width,
2303 type == SOCK_RAW ? "p_raw" : "p_dgr");
2304 if (state_width)
2305 printf("%-*s ", state_width, "UNCONN");
2306 printf("%-6d %-6d ", rq, 0);
2307 if (prot == 3) {
2308 printf("%*s:", addr_width, "*");
2309 } else {
2310 char tb[16];
2311 printf("%*s:", addr_width,
2312 ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2313 }
2314 if (iface == 0) {
2315 printf("%-*s ", serv_width, "*");
2316 } else {
2317 printf("%-*s ", serv_width, xll_index_to_name(iface));
2318 }
2319 printf("%*s*%-*s",
2320 addr_width, "", serv_width, "");
2321
2322 if (show_users) {
2323 char ubuf[4096];
2324 if (find_users(ino, ubuf, sizeof(ubuf)) > 0)
2325 printf(" users:(%s)", ubuf);
2326 }
2327 if (show_details) {
2328 printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2329 }
2330 printf("\n");
2331 }
2332
2333 return 0;
2334 }
2335
netlink_show(struct filter * f)2336 int netlink_show(struct filter *f)
2337 {
2338 FILE *fp;
2339 char buf[256];
2340 int prot, pid;
2341 unsigned groups;
2342 int rq, wq, rc;
2343 unsigned long long sk, cb;
2344
2345 if (!(f->states & (1<<SS_CLOSE)))
2346 return 0;
2347
2348 if ((fp = net_netlink_open()) == NULL)
2349 return -1;
2350 fgets(buf, sizeof(buf)-1, fp);
2351
2352 while (fgets(buf, sizeof(buf)-1, fp)) {
2353 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
2354 &sk,
2355 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
2356
2357 if (f->f) {
2358 struct tcpstat tst;
2359 tst.local.family = AF_NETLINK;
2360 tst.remote.family = AF_NETLINK;
2361 tst.rport = -1;
2362 tst.lport = pid;
2363 tst.local.data[0] = prot;
2364 tst.remote.data[0] = 0;
2365 if (run_ssfilter(f->f, &tst) == 0)
2366 continue;
2367 }
2368
2369 if (netid_width)
2370 printf("%-*s ", netid_width, "nl");
2371 if (state_width)
2372 printf("%-*s ", state_width, "UNCONN");
2373 printf("%-6d %-6d ", rq, wq);
2374 if (resolve_services && prot == 0)
2375 printf("%*s:", addr_width, "rtnl");
2376 else if (resolve_services && prot == 3)
2377 printf("%*s:", addr_width, "fw");
2378 else if (resolve_services && prot == 4)
2379 printf("%*s:", addr_width, "tcpdiag");
2380 else
2381 printf("%*d:", addr_width, prot);
2382 if (pid == -1) {
2383 printf("%-*s ", serv_width, "*");
2384 } else if (resolve_services) {
2385 int done = 0;
2386 if (!pid) {
2387 done = 1;
2388 printf("%-*s ", serv_width, "kernel");
2389 } else if (pid > 0) {
2390 char procname[64];
2391 FILE *fp;
2392 sprintf(procname, "%s/%d/stat",
2393 getenv("PROC_ROOT") ? : "/proc", pid);
2394 if ((fp = fopen(procname, "r")) != NULL) {
2395 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2396 sprintf(procname+strlen(procname), "/%d", pid);
2397 printf("%-*s ", serv_width, procname);
2398 done = 1;
2399 }
2400 fclose(fp);
2401 }
2402 }
2403 if (!done)
2404 printf("%-*d ", serv_width, pid);
2405 } else {
2406 printf("%-*d ", serv_width, pid);
2407 }
2408 printf("%*s*%-*s",
2409 addr_width, "", serv_width, "");
2410
2411 if (show_details) {
2412 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
2413 }
2414 printf("\n");
2415 }
2416
2417 return 0;
2418 }
2419
2420 struct snmpstat
2421 {
2422 int tcp_estab;
2423 };
2424
get_snmp_int(char * proto,char * key,int * result)2425 int get_snmp_int(char *proto, char *key, int *result)
2426 {
2427 char buf[1024];
2428 FILE *fp;
2429 int protolen = strlen(proto);
2430 int keylen = strlen(key);
2431
2432 *result = 0;
2433
2434 if ((fp = net_snmp_open()) == NULL)
2435 return -1;
2436
2437 while (fgets(buf, sizeof(buf), fp) != NULL) {
2438 char *p = buf;
2439 int pos = 0;
2440 if (memcmp(buf, proto, protolen))
2441 continue;
2442 while ((p = strchr(p, ' ')) != NULL) {
2443 pos++;
2444 p++;
2445 if (memcmp(p, key, keylen) == 0 &&
2446 (p[keylen] == ' ' || p[keylen] == '\n'))
2447 break;
2448 }
2449 if (fgets(buf, sizeof(buf), fp) == NULL)
2450 break;
2451 if (memcmp(buf, proto, protolen))
2452 break;
2453 p = buf;
2454 while ((p = strchr(p, ' ')) != NULL) {
2455 p++;
2456 if (--pos == 0) {
2457 sscanf(p, "%d", result);
2458 fclose(fp);
2459 return 0;
2460 }
2461 }
2462 }
2463
2464 fclose(fp);
2465 errno = ESRCH;
2466 return -1;
2467 }
2468
2469
2470 /* Get stats from sockstat */
2471
2472 struct sockstat
2473 {
2474 int socks;
2475 int tcp_mem;
2476 int tcp_total;
2477 int tcp_orphans;
2478 int tcp_tws;
2479 int tcp4_hashed;
2480 int udp4;
2481 int raw4;
2482 int frag4;
2483 int frag4_mem;
2484 int tcp6_hashed;
2485 int udp6;
2486 int raw6;
2487 int frag6;
2488 int frag6_mem;
2489 };
2490
get_sockstat_line(char * line,struct sockstat * s)2491 static void get_sockstat_line(char *line, struct sockstat *s)
2492 {
2493 char id[256], rem[256];
2494
2495 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
2496 return;
2497
2498 if (strcmp(id, "sockets:") == 0)
2499 sscanf(rem, "%*s%d", &s->socks);
2500 else if (strcmp(id, "UDP:") == 0)
2501 sscanf(rem, "%*s%d", &s->udp4);
2502 else if (strcmp(id, "UDP6:") == 0)
2503 sscanf(rem, "%*s%d", &s->udp6);
2504 else if (strcmp(id, "RAW:") == 0)
2505 sscanf(rem, "%*s%d", &s->raw4);
2506 else if (strcmp(id, "RAW6:") == 0)
2507 sscanf(rem, "%*s%d", &s->raw6);
2508 else if (strcmp(id, "TCP6:") == 0)
2509 sscanf(rem, "%*s%d", &s->tcp6_hashed);
2510 else if (strcmp(id, "FRAG:") == 0)
2511 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
2512 else if (strcmp(id, "FRAG6:") == 0)
2513 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
2514 else if (strcmp(id, "TCP:") == 0)
2515 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
2516 &s->tcp4_hashed,
2517 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
2518 }
2519
get_sockstat(struct sockstat * s)2520 int get_sockstat(struct sockstat *s)
2521 {
2522 char buf[256];
2523 FILE *fp;
2524
2525 memset(s, 0, sizeof(*s));
2526
2527 if ((fp = net_sockstat_open()) == NULL)
2528 return -1;
2529 while(fgets(buf, sizeof(buf), fp) != NULL)
2530 get_sockstat_line(buf, s);
2531 fclose(fp);
2532
2533 if ((fp = net_sockstat6_open()) == NULL)
2534 return 0;
2535 while(fgets(buf, sizeof(buf), fp) != NULL)
2536 get_sockstat_line(buf, s);
2537 fclose(fp);
2538
2539 return 0;
2540 }
2541
print_summary(void)2542 int print_summary(void)
2543 {
2544 struct sockstat s;
2545 struct snmpstat sn;
2546
2547 if (get_sockstat(&s) < 0)
2548 perror("ss: get_sockstat");
2549 if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
2550 perror("ss: get_snmpstat");
2551
2552 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
2553
2554 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
2555 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
2556 sn.tcp_estab,
2557 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
2558 s.tcp_orphans,
2559 slabstat.tcp_syns,
2560 s.tcp_tws, slabstat.tcp_tws,
2561 slabstat.tcp_ports
2562 );
2563
2564 printf("\n");
2565 printf("Transport Total IP IPv6\n");
2566 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
2567 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
2568 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
2569 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
2570 printf("INET %-9d %-9d %-9d\n",
2571 s.raw4+s.udp4+s.tcp4_hashed+
2572 s.raw6+s.udp6+s.tcp6_hashed,
2573 s.raw4+s.udp4+s.tcp4_hashed,
2574 s.raw6+s.udp6+s.tcp6_hashed);
2575 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
2576
2577 printf("\n");
2578
2579 return 0;
2580 }
2581
_usage(FILE * dest)2582 static void _usage(FILE *dest)
2583 {
2584 fprintf(dest,
2585 "Usage: ss [ OPTIONS ]\n"
2586 " ss [ OPTIONS ] [ FILTER ]\n"
2587 " -h, --help this message\n"
2588 " -V, --version output version information\n"
2589 " -n, --numeric don't resolve service names\n"
2590 " -r, --resolve resolve host names\n"
2591 " -a, --all display all sockets\n"
2592 " -l, --listening display listening sockets\n"
2593 " -o, --options show timer information\n"
2594 " -e, --extended show detailed socket information\n"
2595 " -m, --memory show socket memory usage\n"
2596 " -p, --processes show process using socket\n"
2597 " -i, --info show internal TCP information\n"
2598 " -s, --summary show socket usage summary\n"
2599 "\n"
2600 " -4, --ipv4 display only IP version 4 sockets\n"
2601 " -6, --ipv6 display only IP version 6 sockets\n"
2602 " -0, --packet display PACKET sockets\n"
2603 " -t, --tcp display only TCP sockets\n"
2604 " -u, --udp display only UDP sockets\n"
2605 " -d, --dccp display only DCCP sockets\n"
2606 " -w, --raw display only RAW sockets\n"
2607 " -x, --unix display only Unix domain sockets\n"
2608 " -f, --family=FAMILY display sockets of type FAMILY\n"
2609 "\n"
2610 " -A, --query=QUERY, --socket=QUERY\n"
2611 " QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
2612 "\n"
2613 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
2614 " -F, --filter=FILE read filter information from FILE\n"
2615 " FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
2616 );
2617 }
2618
2619 static void help(void) __attribute__((noreturn));
help(void)2620 static void help(void)
2621 {
2622 _usage(stdout);
2623 exit(0);
2624 }
2625
2626 static void usage(void) __attribute__((noreturn));
usage(void)2627 static void usage(void)
2628 {
2629 _usage(stderr);
2630 exit(-1);
2631 }
2632
2633
scan_state(const char * state)2634 int scan_state(const char *state)
2635 {
2636 int i;
2637 if (strcasecmp(state, "close") == 0 ||
2638 strcasecmp(state, "closed") == 0)
2639 return (1<<SS_CLOSE);
2640 if (strcasecmp(state, "syn-rcv") == 0)
2641 return (1<<SS_SYN_RECV);
2642 if (strcasecmp(state, "established") == 0)
2643 return (1<<SS_ESTABLISHED);
2644 if (strcasecmp(state, "all") == 0)
2645 return SS_ALL;
2646 if (strcasecmp(state, "connected") == 0)
2647 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
2648 if (strcasecmp(state, "synchronized") == 0)
2649 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
2650 if (strcasecmp(state, "bucket") == 0)
2651 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
2652 if (strcasecmp(state, "big") == 0)
2653 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
2654 for (i=0; i<SS_MAX; i++) {
2655 if (strcasecmp(state, sstate_namel[i]) == 0)
2656 return (1<<i);
2657 }
2658 return 0;
2659 }
2660
2661 static const struct option long_opts[] = {
2662 { "numeric", 0, 0, 'n' },
2663 { "resolve", 0, 0, 'r' },
2664 { "options", 0, 0, 'o' },
2665 { "extended", 0, 0, 'e' },
2666 { "memory", 0, 0, 'm' },
2667 { "info", 0, 0, 'i' },
2668 { "processes", 0, 0, 'p' },
2669 { "dccp", 0, 0, 'd' },
2670 { "tcp", 0, 0, 't' },
2671 { "udp", 0, 0, 'u' },
2672 { "raw", 0, 0, 'w' },
2673 { "unix", 0, 0, 'x' },
2674 { "all", 0, 0, 'a' },
2675 { "listening", 0, 0, 'l' },
2676 { "ipv4", 0, 0, '4' },
2677 { "ipv6", 0, 0, '6' },
2678 { "packet", 0, 0, '0' },
2679 { "family", 1, 0, 'f' },
2680 { "socket", 1, 0, 'A' },
2681 { "query", 1, 0, 'A' },
2682 { "summary", 0, 0, 's' },
2683 { "diag", 1, 0, 'D' },
2684 { "filter", 1, 0, 'F' },
2685 { "version", 0, 0, 'V' },
2686 { "help", 0, 0, 'h' },
2687 { 0 }
2688
2689 };
2690
main(int argc,char * argv[])2691 int main(int argc, char *argv[])
2692 {
2693 int do_default = 1;
2694 int saw_states = 0;
2695 int saw_query = 0;
2696 int do_summary = 0;
2697 const char *dump_tcpdiag = NULL;
2698 FILE *filter_fp = NULL;
2699 int ch;
2700
2701 memset(¤t_filter, 0, sizeof(current_filter));
2702
2703 current_filter.states = default_filter.states;
2704
2705 while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spf:miA:D:F:vV",
2706 long_opts, NULL)) != EOF) {
2707 switch(ch) {
2708 case 'n':
2709 resolve_services = 0;
2710 break;
2711 case 'r':
2712 resolve_hosts = 1;
2713 break;
2714 case 'o':
2715 show_options = 1;
2716 break;
2717 case 'e':
2718 show_options = 1;
2719 show_details++;
2720 break;
2721 case 'm':
2722 show_mem = 1;
2723 break;
2724 case 'i':
2725 show_tcpinfo = 1;
2726 break;
2727 case 'p':
2728 show_users++;
2729 user_ent_hash_build();
2730 break;
2731 case 'd':
2732 current_filter.dbs |= (1<<DCCP_DB);
2733 do_default = 0;
2734 break;
2735 case 't':
2736 current_filter.dbs |= (1<<TCP_DB);
2737 do_default = 0;
2738 break;
2739 case 'u':
2740 current_filter.dbs |= (1<<UDP_DB);
2741 do_default = 0;
2742 break;
2743 case 'w':
2744 current_filter.dbs |= (1<<RAW_DB);
2745 do_default = 0;
2746 break;
2747 case 'x':
2748 current_filter.dbs |= UNIX_DBM;
2749 do_default = 0;
2750 break;
2751 case 'a':
2752 current_filter.states = SS_ALL;
2753 break;
2754 case 'l':
2755 current_filter.states = (1<<SS_LISTEN) | (1<<SS_CLOSE);
2756 break;
2757 case '4':
2758 preferred_family = AF_INET;
2759 break;
2760 case '6':
2761 preferred_family = AF_INET6;
2762 break;
2763 case '0':
2764 preferred_family = AF_PACKET;
2765 break;
2766 case 'f':
2767 if (strcmp(optarg, "inet") == 0)
2768 preferred_family = AF_INET;
2769 else if (strcmp(optarg, "inet6") == 0)
2770 preferred_family = AF_INET6;
2771 else if (strcmp(optarg, "link") == 0)
2772 preferred_family = AF_PACKET;
2773 else if (strcmp(optarg, "unix") == 0)
2774 preferred_family = AF_UNIX;
2775 else if (strcmp(optarg, "netlink") == 0)
2776 preferred_family = AF_NETLINK;
2777 else if (strcmp(optarg, "help") == 0)
2778 help();
2779 else {
2780 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
2781 usage();
2782 }
2783 break;
2784 case 'A':
2785 {
2786 char *p, *p1;
2787 if (!saw_query) {
2788 current_filter.dbs = 0;
2789 saw_query = 1;
2790 do_default = 0;
2791 }
2792 p = p1 = optarg;
2793 do {
2794 if ((p1 = strchr(p, ',')) != NULL)
2795 *p1 = 0;
2796 if (strcmp(p, "all") == 0) {
2797 current_filter.dbs = ALL_DB;
2798 } else if (strcmp(p, "inet") == 0) {
2799 current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
2800 } else if (strcmp(p, "udp") == 0) {
2801 current_filter.dbs |= (1<<UDP_DB);
2802 } else if (strcmp(p, "dccp") == 0) {
2803 current_filter.dbs |= (1<<DCCP_DB);
2804 } else if (strcmp(p, "tcp") == 0) {
2805 current_filter.dbs |= (1<<TCP_DB);
2806 } else if (strcmp(p, "raw") == 0) {
2807 current_filter.dbs |= (1<<RAW_DB);
2808 } else if (strcmp(p, "unix") == 0) {
2809 current_filter.dbs |= UNIX_DBM;
2810 } else if (strcasecmp(p, "unix_stream") == 0 ||
2811 strcmp(p, "u_str") == 0) {
2812 current_filter.dbs |= (1<<UNIX_ST_DB);
2813 } else if (strcasecmp(p, "unix_dgram") == 0 ||
2814 strcmp(p, "u_dgr") == 0) {
2815 current_filter.dbs |= (1<<UNIX_DG_DB);
2816 } else if (strcmp(p, "packet") == 0) {
2817 current_filter.dbs |= PACKET_DBM;
2818 } else if (strcmp(p, "packet_raw") == 0 ||
2819 strcmp(p, "p_raw") == 0) {
2820 current_filter.dbs |= (1<<PACKET_R_DB);
2821 } else if (strcmp(p, "packet_dgram") == 0 ||
2822 strcmp(p, "p_dgr") == 0) {
2823 current_filter.dbs |= (1<<PACKET_DG_DB);
2824 } else if (strcmp(p, "netlink") == 0) {
2825 current_filter.dbs |= (1<<NETLINK_DB);
2826 } else {
2827 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
2828 usage();
2829 }
2830 p = p1 + 1;
2831 } while (p1);
2832 break;
2833 }
2834 case 's':
2835 do_summary = 1;
2836 break;
2837 case 'D':
2838 dump_tcpdiag = optarg;
2839 break;
2840 case 'F':
2841 if (filter_fp) {
2842 fprintf(stderr, "More than one filter file\n");
2843 exit(-1);
2844 }
2845 if (optarg[0] == '-')
2846 filter_fp = stdin;
2847 else
2848 filter_fp = fopen(optarg, "r");
2849 if (!filter_fp) {
2850 perror("fopen filter file");
2851 exit(-1);
2852 }
2853 break;
2854 case 'v':
2855 case 'V':
2856 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
2857 exit(0);
2858 case 'h':
2859 case '?':
2860 help();
2861 default:
2862 usage();
2863 }
2864 }
2865
2866 argc -= optind;
2867 argv += optind;
2868
2869 get_slabstat(&slabstat);
2870
2871 if (do_summary) {
2872 print_summary();
2873 if (do_default && argc == 0)
2874 exit(0);
2875 }
2876
2877 if (do_default)
2878 current_filter.dbs = default_filter.dbs;
2879
2880 if (preferred_family == AF_UNSPEC) {
2881 if (!(current_filter.dbs&~UNIX_DBM))
2882 preferred_family = AF_UNIX;
2883 else if (!(current_filter.dbs&~PACKET_DBM))
2884 preferred_family = AF_PACKET;
2885 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
2886 preferred_family = AF_NETLINK;
2887 }
2888
2889 if (preferred_family != AF_UNSPEC) {
2890 int mask2;
2891 if (preferred_family == AF_INET ||
2892 preferred_family == AF_INET6) {
2893 mask2= current_filter.dbs;
2894 } else if (preferred_family == AF_PACKET) {
2895 mask2 = PACKET_DBM;
2896 } else if (preferred_family == AF_UNIX) {
2897 mask2 = UNIX_DBM;
2898 } else if (preferred_family == AF_NETLINK) {
2899 mask2 = (1<<NETLINK_DB);
2900 } else {
2901 mask2 = 0;
2902 }
2903
2904 if (do_default)
2905 current_filter.dbs = mask2;
2906 else
2907 current_filter.dbs &= mask2;
2908 current_filter.families = (1<<preferred_family);
2909 } else {
2910 if (!do_default)
2911 current_filter.families = ~0;
2912 else
2913 current_filter.families = default_filter.families;
2914 }
2915 if (current_filter.dbs == 0) {
2916 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
2917 exit(0);
2918 }
2919 if (current_filter.families == 0) {
2920 fprintf(stderr, "ss: no families to show with such filter.\n");
2921 exit(0);
2922 }
2923
2924 if (resolve_services && resolve_hosts &&
2925 (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB))))
2926 init_service_resolver();
2927
2928 /* Now parse filter... */
2929 if (argc == 0 && filter_fp) {
2930 if (ssfilter_parse(¤t_filter.f, 0, NULL, filter_fp))
2931 usage();
2932 }
2933
2934 while (argc > 0) {
2935 if (strcmp(*argv, "state") == 0) {
2936 NEXT_ARG();
2937 if (!saw_states)
2938 current_filter.states = 0;
2939 current_filter.states |= scan_state(*argv);
2940 saw_states = 1;
2941 } else if (strcmp(*argv, "exclude") == 0 ||
2942 strcmp(*argv, "excl") == 0) {
2943 NEXT_ARG();
2944 if (!saw_states)
2945 current_filter.states = SS_ALL;
2946 current_filter.states &= ~scan_state(*argv);
2947 saw_states = 1;
2948 } else {
2949 if (ssfilter_parse(¤t_filter.f, argc, argv, filter_fp))
2950 usage();
2951 break;
2952 }
2953 argc--; argv++;
2954 }
2955
2956 if (current_filter.states == 0) {
2957 fprintf(stderr, "ss: no socket states to show with such filter.\n");
2958 exit(0);
2959 }
2960
2961 if (dump_tcpdiag) {
2962 FILE *dump_fp = stdout;
2963 if (!(current_filter.dbs & (1<<TCP_DB))) {
2964 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
2965 exit(0);
2966 }
2967 if (dump_tcpdiag[0] != '-') {
2968 dump_fp = fopen(dump_tcpdiag, "w");
2969 if (!dump_tcpdiag) {
2970 perror("fopen dump file");
2971 exit(-1);
2972 }
2973 }
2974 tcp_show_netlink(¤t_filter, dump_fp, TCPDIAG_GETSOCK);
2975 fflush(dump_fp);
2976 exit(0);
2977 }
2978
2979 netid_width = 0;
2980 if (current_filter.dbs&(current_filter.dbs-1))
2981 netid_width = 5;
2982
2983 state_width = 0;
2984 if (current_filter.states&(current_filter.states-1))
2985 state_width = 10;
2986
2987 screen_width = 80;
2988 if (isatty(STDOUT_FILENO)) {
2989 struct winsize w;
2990
2991 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
2992 if (w.ws_col > 0)
2993 screen_width = w.ws_col;
2994 }
2995 }
2996
2997 addrp_width = screen_width;
2998 addrp_width -= netid_width+1;
2999 addrp_width -= state_width+1;
3000 addrp_width -= 14;
3001
3002 if (addrp_width&1) {
3003 if (netid_width)
3004 netid_width++;
3005 else if (state_width)
3006 state_width++;
3007 }
3008
3009 addrp_width /= 2;
3010 addrp_width--;
3011
3012 serv_width = resolve_services ? 7 : 5;
3013
3014 if (addrp_width < 15+serv_width+1)
3015 addrp_width = 15+serv_width+1;
3016
3017 addr_width = addrp_width - serv_width - 1;
3018
3019 if (netid_width)
3020 printf("%-*s ", netid_width, "Netid");
3021 if (state_width)
3022 printf("%-*s ", state_width, "State");
3023 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
3024
3025 printf("%*s:%-*s %*s:%-*s\n",
3026 addr_width, "Local Address", serv_width, "Port",
3027 addr_width, "Peer Address", serv_width, "Port");
3028
3029 fflush(stdout);
3030
3031 if (current_filter.dbs & (1<<NETLINK_DB))
3032 netlink_show(¤t_filter);
3033 if (current_filter.dbs & PACKET_DBM)
3034 packet_show(¤t_filter);
3035 if (current_filter.dbs & UNIX_DBM)
3036 unix_show(¤t_filter);
3037 if (current_filter.dbs & (1<<RAW_DB))
3038 raw_show(¤t_filter);
3039 if (current_filter.dbs & (1<<UDP_DB))
3040 udp_show(¤t_filter);
3041 if (current_filter.dbs & (1<<TCP_DB))
3042 tcp_show(¤t_filter, TCPDIAG_GETSOCK);
3043 if (current_filter.dbs & (1<<DCCP_DB))
3044 tcp_show(¤t_filter, DCCPDIAG_GETSOCK);
3045 return 0;
3046 }
3047