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resolve header file conflict betwen linux/in6.h and netinet/in.h
[mirror_iproute2.git] / misc / ss.c
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b9de3ecf 1/*
aba5acdf
SH		 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>
aba5acdf
SH		 25#include <dirent.h>
26#include <fnmatch.h>
ab61159a 27#include <getopt.h>
aba5acdf
SH		 28
29#include "utils.h"
30#include "rt_names.h"
31#include "ll_map.h"
32#include "libnetlink.h"
aba5acdf
SH		 33#include "SNAPSHOT.h"
34
9cb1eccf 35#include <linux/tcp.h>
f6062360 36#include <linux/sock_diag.h>
351efcde 37#include <linux/inet_diag.h>
dfbaa90d 38#include <linux/unix_diag.h>
372c30d2
ND		 39#include <linux/netdevice.h> /* for MAX_ADDR_LEN */
40#include <linux/filter.h>
41#include <linux/packet_diag.h>
ecb928c8 42#include <linux/netlink_diag.h>
aba5acdf 43
5fb421d4 44#define DIAG_REQUEST(_req, _r) \
45 struct { \
46 struct nlmsghdr nlh; \
47 _r; \
48 } _req = { \
49 .nlh = { \
50 .nlmsg_type = SOCK_DIAG_BY_FAMILY, \
51 .nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
52 .nlmsg_seq = 123456, \
53 .nlmsg_len = sizeof(_req), \
54 }, \
55 }
56
116ac927
RH		 57#if HAVE_SELINUX
58#include <selinux/selinux.h>
59#else
60/* Stubs for SELinux functions */
61static int is_selinux_enabled(void)
62{
63 return -1;
64}
65
66static int getpidcon(pid_t pid, char **context)
67{
68 *context = NULL;
69 return -1;
70}
71
72static int getfilecon(char *path, char **context)
73{
74 *context = NULL;
75 return -1;
76}
77
78static int security_get_initial_context(char *name, char **context)
79{
80 *context = NULL;
81 return -1;
82}
83#endif
84
aba5acdf
SH		 85int resolve_hosts = 0;
86int resolve_services = 1;
87int preferred_family = AF_UNSPEC;
88int show_options = 0;
89int show_details = 0;
90int show_users = 0;
91int show_mem = 0;
92int show_tcpinfo = 0;
372c30d2 93int show_bpf = 0;
116ac927
RH		 94int show_proc_ctx = 0;
95int show_sock_ctx = 0;
96/* If show_users & show_proc_ctx only do user_ent_hash_build() once */
97int user_ent_hash_build_init = 0;
aba5acdf
SH		 98
99int netid_width;
100int state_width;
101int addrp_width;
102int addr_width;
103int serv_width;
104int screen_width;
105
106static const char *TCP_PROTO = "tcp";
107static const char *UDP_PROTO = "udp";
108static const char *RAW_PROTO = "raw";
109static const char *dg_proto = NULL;
110
111enum
112{
113 TCP_DB,
351efcde 114 DCCP_DB,
aba5acdf
SH		 115 UDP_DB,
116 RAW_DB,
117 UNIX_DG_DB,
118 UNIX_ST_DB,
30b669d7 119 UNIX_SQ_DB,
aba5acdf
SH		 120 PACKET_DG_DB,
121 PACKET_R_DB,
122 NETLINK_DB,
123 MAX_DB
124};
125
126#define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
30b669d7 127#define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
aba5acdf
SH		 128#define ALL_DB ((1<<MAX_DB)-1)
129
130enum {
7d105b56
SH		 131 SS_UNKNOWN,
132 SS_ESTABLISHED,
133 SS_SYN_SENT,
134 SS_SYN_RECV,
135 SS_FIN_WAIT1,
136 SS_FIN_WAIT2,
137 SS_TIME_WAIT,
138 SS_CLOSE,
139 SS_CLOSE_WAIT,
140 SS_LAST_ACK,
141 SS_LISTEN,
142 SS_CLOSING,
143 SS_MAX
aba5acdf
SH		 144};
145
146#define SS_ALL ((1<<SS_MAX)-1)
147
148#include "ssfilter.h"
149
150struct filter
151{
152 int dbs;
153 int states;
154 int families;
155 struct ssfilter *f;
156};
157
158struct filter default_filter = {
7de7e591 159 .dbs = ~0,
e7113c61
SH		 160 .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
161 .families= (1<<AF_INET)|(1<<AF_INET6),
aba5acdf
SH		 162};
163
164struct filter current_filter;
165
ab01dbbb 166static FILE *generic_proc_open(const char *env, const char *name)
aba5acdf 167{
ab01dbbb 168 const char *p = getenv(env);
aba5acdf 169 char store[128];
ab01dbbb 170
aba5acdf
SH		 171 if (!p) {
172 p = getenv("PROC_ROOT") ? : "/proc";
173 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
174 p = store;
175 }
ab01dbbb
SH		 176
177 return fopen(p, "r");
aba5acdf
SH		 178}
179
ab01dbbb 180static FILE *net_tcp_open(void)
aba5acdf
SH		 181{
182 return generic_proc_open("PROC_NET_TCP", "net/tcp");
183}
184
ab01dbbb 185static FILE *net_tcp6_open(void)
aba5acdf
SH		 186{
187 return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
188}
189
ab01dbbb 190static FILE *net_udp_open(void)
aba5acdf
SH		 191{
192 return generic_proc_open("PROC_NET_UDP", "net/udp");
193}
194
ab01dbbb 195static FILE *net_udp6_open(void)
aba5acdf
SH		 196{
197 return generic_proc_open("PROC_NET_UDP6", "net/udp6");
198}
199
ab01dbbb 200static FILE *net_raw_open(void)
aba5acdf
SH		 201{
202 return generic_proc_open("PROC_NET_RAW", "net/raw");
203}
204
ab01dbbb 205static FILE *net_raw6_open(void)
aba5acdf
SH		 206{
207 return generic_proc_open("PROC_NET_RAW6", "net/raw6");
208}
209
ab01dbbb 210static FILE *net_unix_open(void)
aba5acdf
SH		 211{
212 return generic_proc_open("PROC_NET_UNIX", "net/unix");
213}
214
ab01dbbb 215static FILE *net_packet_open(void)
aba5acdf
SH		 216{
217 return generic_proc_open("PROC_NET_PACKET", "net/packet");
218}
219
ab01dbbb 220static FILE *net_netlink_open(void)
aba5acdf
SH		 221{
222 return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
223}
224
ab01dbbb 225static FILE *slabinfo_open(void)
aba5acdf
SH		 226{
227 return generic_proc_open("PROC_SLABINFO", "slabinfo");
228}
229
ab01dbbb 230static FILE *net_sockstat_open(void)
aba5acdf
SH		 231{
232 return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
233}
234
ab01dbbb 235static FILE *net_sockstat6_open(void)
aba5acdf
SH		 236{
237 return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
238}
239
ab01dbbb 240static FILE *net_snmp_open(void)
aba5acdf
SH		 241{
242 return generic_proc_open("PROC_NET_SNMP", "net/snmp");
243}
244
ab01dbbb 245static FILE *ephemeral_ports_open(void)
aba5acdf
SH		 246{
247 return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
248}
249
fbc0f876
SF		 250struct user_ent {
251 struct user_ent *next;
252 unsigned int ino;
253 int pid;
254 int fd;
116ac927
RH		 255 char *process;
256 char *process_ctx;
257 char *socket_ctx;
fbc0f876
SF		 258};
259
260#define USER_ENT_HASH_SIZE 256
261struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
262
263static int user_ent_hashfn(unsigned int ino)
aba5acdf 264{
fbc0f876 265 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
aba5acdf 266
fbc0f876
SF		 267 return val & (USER_ENT_HASH_SIZE - 1);
268}
269
116ac927
RH		 270static void user_ent_add(unsigned int ino, char *process,
271 int pid, int fd,
272 char *proc_ctx,
273 char *sock_ctx)
fbc0f876
SF		 274{
275 struct user_ent *p, **pp;
aba5acdf 276
116ac927
RH		 277 p = malloc(sizeof(struct user_ent));
278 if (!p) {
279 fprintf(stderr, "ss: failed to malloc buffer\n");
fbc0f876 280 abort();
116ac927 281 }
fbc0f876
SF		 282 p->next = NULL;
283 p->ino = ino;
284 p->pid = pid;
285 p->fd = fd;
116ac927
RH		 286 p->process = strdup(process);
287 p->process_ctx = strdup(proc_ctx);
288 p->socket_ctx = strdup(sock_ctx);
fbc0f876
SF		 289
290 pp = &user_ent_hash[user_ent_hashfn(ino)];
291 p->next = *pp;
292 *pp = p;
293}
aba5acdf 294
116ac927
RH		 295static void user_ent_destroy(void)
296{
297 struct user_ent *p, *p_next;
298 int cnt = 0;
299
300 while (cnt != USER_ENT_HASH_SIZE) {
301 p = user_ent_hash[cnt];
302 while (p) {
303 free(p->process);
304 free(p->process_ctx);
305 free(p->socket_ctx);
306 p_next = p->next;
307 free(p);
308 p = p_next;
309 }
310 cnt++;
311 }
312}
313
fbc0f876
SF		 314static void user_ent_hash_build(void)
315{
316 const char *root = getenv("PROC_ROOT") ? : "/proc/";
317 struct dirent *d;
318 char name[1024];
319 int nameoff;
320 DIR *dir;
116ac927
RH		 321 char *pid_context;
322 char *sock_context;
323 const char *no_ctx = "unavailable";
324
325 /* If show_users & show_proc_ctx set only do this once */
326 if (user_ent_hash_build_init != 0)
327 return;
328
329 user_ent_hash_build_init = 1;
fbc0f876
SF		 330
331 strcpy(name, root);
332 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
aba5acdf 333 strcat(name, "/");
fbc0f876 334
aba5acdf 335 nameoff = strlen(name);
fbc0f876
SF		 336
337 dir = opendir(name);
338 if (!dir)
339 return;
aba5acdf
SH		 340
341 while ((d = readdir(dir)) != NULL) {
aba5acdf 342 struct dirent *d1;
aba5acdf 343 char process[16];
116ac927 344 char *p;
fbc0f876
SF		 345 int pid, pos;
346 DIR *dir1;
347 char crap;
aba5acdf
SH		 348
349 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
350 continue;
351
116ac927
RH		 352 if (getpidcon(pid, &pid_context) != 0)
353 pid_context = strdup(no_ctx);
354
fbc0f876 355 sprintf(name + nameoff, "%d/fd/", pid);
aba5acdf
SH		 356 pos = strlen(name);
357 if ((dir1 = opendir(name)) == NULL)
358 continue;
359
fbc0f876 360 process[0] = '\0';
116ac927 361 p = process;
aba5acdf
SH		 362
363 while ((d1 = readdir(dir1)) != NULL) {
fbc0f876
SF		 364 const char *pattern = "socket:[";
365 unsigned int ino;
aba5acdf 366 char lnk[64];
18445b3e 367 int fd;
788731b3 368 ssize_t link_len;
116ac927 369 char tmp[1024];
aba5acdf
SH		 370
371 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
372 continue;
373
374 sprintf(name+pos, "%d", fd);
788731b3
TJ		 375
376 link_len = readlink(name, lnk, sizeof(lnk)-1);
377 if (link_len == -1)
378 continue;
379 lnk[link_len] = '\0';
380
381 if (strncmp(lnk, pattern, strlen(pattern)))
aba5acdf
SH		 382 continue;
383
fbc0f876 384 sscanf(lnk, "socket:[%u]", &ino);
aba5acdf 385
116ac927
RH		 386 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
387 root, pid, d1->d_name);
388
389 if (getfilecon(tmp, &sock_context) <= 0)
390 sock_context = strdup(no_ctx);
391
392 if (*p == '\0') {
aba5acdf 393 FILE *fp;
fbc0f876 394
116ac927
RH		 395 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
396 root, pid);
aba5acdf 397 if ((fp = fopen(tmp, "r")) != NULL) {
116ac927 398 fscanf(fp, "%*d (%[^)])", p);
aba5acdf
SH		 399 fclose(fp);
400 }
401 }
116ac927
RH		 402 user_ent_add(ino, p, pid, fd,
403 pid_context, sock_context);
404 free(sock_context);
aba5acdf 405 }
116ac927 406 free(pid_context);
aba5acdf
SH		 407 closedir(dir1);
408 }
409 closedir(dir);
fbc0f876
SF		 410}
411
116ac927
RH		 412enum entry_types {
413 USERS,
414 PROC_CTX,
415 PROC_SOCK_CTX
416};
417
418#define ENTRY_BUF_SIZE 512
419static int find_entry(unsigned ino, char **buf, int type)
fbc0f876
SF		 420{
421 struct user_ent *p;
422 int cnt = 0;
423 char *ptr;
116ac927
RH		 424 char **new_buf = buf;
425 int len, new_buf_len;
426 int buf_used = 0;
427 int buf_len = 0;
fbc0f876
SF		 428
429 if (!ino)
430 return 0;
431
432 p = user_ent_hash[user_ent_hashfn(ino)];
116ac927 433 ptr = *buf = NULL;
fbc0f876
SF		 434 while (p) {
435 if (p->ino != ino)
436 goto next;
437
116ac927
RH		 438 while (1) {
439 ptr = *buf + buf_used;
440 switch (type) {
441 case USERS:
442 len = snprintf(ptr, buf_len - buf_used,
443 "(\"%s\",pid=%d,fd=%d),",
444 p->process, p->pid, p->fd);
445 break;
446 case PROC_CTX:
447 len = snprintf(ptr, buf_len - buf_used,
448 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
449 p->process, p->pid,
450 p->process_ctx, p->fd);
451 break;
452 case PROC_SOCK_CTX:
453 len = snprintf(ptr, buf_len - buf_used,
454 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
455 p->process, p->pid,
456 p->process_ctx, p->fd,
457 p->socket_ctx);
458 break;
459 default:
460 fprintf(stderr, "ss: invalid type: %d\n", type);
461 abort();
462 }
fbc0f876 463
116ac927
RH		 464 if (len < 0 || len >= buf_len - buf_used) {
465 new_buf_len = buf_len + ENTRY_BUF_SIZE;
466 *new_buf = realloc(*buf, new_buf_len);
467 if (!new_buf) {
468 fprintf(stderr, "ss: failed to malloc buffer\n");
469 abort();
470 }
471 **buf = **new_buf;
472 buf_len = new_buf_len;
473 continue;
474 } else {
475 buf_used += len;
476 break;
477 }
478 }
fbc0f876 479 cnt++;
116ac927 480next:
fbc0f876
SF		 481 p = p->next;
482 }
116ac927
RH		 483 if (buf_used) {
484 ptr = *buf + buf_used;
fbc0f876 485 ptr[-1] = '\0';
116ac927 486 }
aba5acdf
SH		 487 return cnt;
488}
489
aba5acdf
SH		 490/* Get stats from slab */
491
492struct slabstat
493{
494 int socks;
495 int tcp_ports;
496 int tcp_tws;
497 int tcp_syns;
498 int skbs;
499};
500
501struct slabstat slabstat;
502
ae665a52 503static const char *slabstat_ids[] =
aba5acdf
SH		 504{
505 "sock",
506 "tcp_bind_bucket",
507 "tcp_tw_bucket",
508 "tcp_open_request",
509 "skbuff_head_cache",
510};
511
d1f28cf1 512static int get_slabstat(struct slabstat *s)
aba5acdf
SH		 513{
514 char buf[256];
515 FILE *fp;
516 int cnt;
517
518 memset(s, 0, sizeof(*s));
519
ab01dbbb
SH		 520 fp = slabinfo_open();
521 if (!fp)
aba5acdf
SH		 522 return -1;
523
524 cnt = sizeof(*s)/sizeof(int);
525
526 fgets(buf, sizeof(buf), fp);
527 while(fgets(buf, sizeof(buf), fp) != NULL) {
528 int i;
529 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
530 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
531 sscanf(buf, "%*s%d", ((int *)s) + i);
532 cnt--;
533 break;
534 }
535 }
536 if (cnt <= 0)
537 break;
538 }
539
540 fclose(fp);
541 return 0;
542}
543
7d105b56
SH		 544static const char *sstate_name[] = {
545 "UNKNOWN",
9cb1eccf
ED		 546 [SS_ESTABLISHED] = "ESTAB",
547 [SS_SYN_SENT] = "SYN-SENT",
548 [SS_SYN_RECV] = "SYN-RECV",
549 [SS_FIN_WAIT1] = "FIN-WAIT-1",
550 [SS_FIN_WAIT2] = "FIN-WAIT-2",
551 [SS_TIME_WAIT] = "TIME-WAIT",
552 [SS_CLOSE] = "UNCONN",
553 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
554 [SS_LAST_ACK] = "LAST-ACK",
555 [SS_LISTEN] = "LISTEN",
556 [SS_CLOSING] = "CLOSING",
aba5acdf
SH		 557};
558
7d105b56
SH		 559static const char *sstate_namel[] = {
560 "UNKNOWN",
9cb1eccf
ED		 561 [SS_ESTABLISHED] = "established",
562 [SS_SYN_SENT] = "syn-sent",
563 [SS_SYN_RECV] = "syn-recv",
564 [SS_FIN_WAIT1] = "fin-wait-1",
565 [SS_FIN_WAIT2] = "fin-wait-2",
566 [SS_TIME_WAIT] = "time-wait",
567 [SS_CLOSE] = "unconnected",
568 [SS_CLOSE_WAIT] = "close-wait",
569 [SS_LAST_ACK] = "last-ack",
570 [SS_LISTEN] = "listening",
571 [SS_CLOSING] = "closing",
aba5acdf
SH		 572};
573
574struct tcpstat
575{
576 inet_prefix local;
577 inet_prefix remote;
578 int lport;
579 int rport;
580 int state;
581 int rq, wq;
582 int timer;
583 int timeout;
584 int retrs;
e7113c61 585 unsigned ino;
aba5acdf 586 int probes;
e7113c61 587 unsigned uid;
aba5acdf
SH		 588 int refcnt;
589 unsigned long long sk;
590 int rto, ato, qack, cwnd, ssthresh;
591};
592
7d105b56 593static const char *tmr_name[] = {
aba5acdf
SH		 594 "off",
595 "on",
596 "keepalive",
597 "timewait",
598 "persist",
599 "unknown"
600};
601
d1f28cf1 602static const char *print_ms_timer(int timeout)
aba5acdf
SH		 603{
604 static char buf[64];
605 int secs, msecs, minutes;
606 if (timeout < 0)
607 timeout = 0;
608 secs = timeout/1000;
609 minutes = secs/60;
610 secs = secs%60;
611 msecs = timeout%1000;
612 buf[0] = 0;
613 if (minutes) {
614 msecs = 0;
615 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
616 if (minutes > 9)
617 secs = 0;
618 }
619 if (secs) {
620 if (secs > 9)
621 msecs = 0;
622 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
623 }
624 if (msecs)
625 sprintf(buf+strlen(buf), "%03dms", msecs);
626 return buf;
e7113c61 627}
aba5acdf 628
d1f28cf1 629static const char *print_hz_timer(int timeout)
aba5acdf 630{
2d44be19 631 int hz = get_user_hz();
aba5acdf 632 return print_ms_timer(((timeout*1000) + hz-1)/hz);
e7113c61 633}
aba5acdf
SH		 634
635struct scache
636{
637 struct scache *next;
638 int port;
639 char *name;
640 const char *proto;
641};
642
643struct scache *rlist;
644
d1f28cf1 645static void init_service_resolver(void)
aba5acdf
SH		 646{
647 char buf[128];
648 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
649 if (fp) {
650 fgets(buf, sizeof(buf), fp);
651 while (fgets(buf, sizeof(buf), fp) != NULL) {
652 unsigned int progn, port;
653 char proto[128], prog[128];
654 if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
655 &port, prog+4) == 4) {
656 struct scache *c = malloc(sizeof(*c));
657 if (c) {
658 c->port = port;
659 memcpy(prog, "rpc.", 4);
660 c->name = strdup(prog);
661 if (strcmp(proto, TCP_PROTO) == 0)
662 c->proto = TCP_PROTO;
663 else if (strcmp(proto, UDP_PROTO) == 0)
664 c->proto = UDP_PROTO;
665 else
666 c->proto = NULL;
667 c->next = rlist;
668 rlist = c;
669 }
670 }
671 }
2bcc3c16 672 pclose(fp);
aba5acdf
SH		 673 }
674}
675
ab61159a
SH		 676static int ip_local_port_min, ip_local_port_max;
677
678/* Even do not try default linux ephemeral port ranges:
679 * default /etc/services contains so much of useless crap
680 * wouldbe "allocated" to this area that resolution
681 * is really harmful. I shrug each time when seeing
682 * "socks" or "cfinger" in dumps.
683 */
684static int is_ephemeral(int port)
685{
686 if (!ip_local_port_min) {
ab01dbbb 687 FILE *f = ephemeral_ports_open();
ab61159a 688 if (f) {
ae665a52 689 fscanf(f, "%d %d",
ab61159a
SH		 690 &ip_local_port_min, &ip_local_port_max);
691 fclose(f);
692 } else {
693 ip_local_port_min = 1024;
694 ip_local_port_max = 4999;
695 }
696 }
697
698 return (port >= ip_local_port_min && port<= ip_local_port_max);
699}
700
701
d1f28cf1 702static const char *__resolve_service(int port)
aba5acdf
SH		 703{
704 struct scache *c;
705
706 for (c = rlist; c; c = c->next) {
707 if (c->port == port && c->proto == dg_proto)
708 return c->name;
709 }
710
ab61159a 711 if (!is_ephemeral(port)) {
aba5acdf
SH		 712 static int notfirst;
713 struct servent *se;
714 if (!notfirst) {
715 setservent(1);
716 notfirst = 1;
ae665a52 717 }
aba5acdf
SH		 718 se = getservbyport(htons(port), dg_proto);
719 if (se)
720 return se->s_name;
721 }
722
723 return NULL;
724}
725
726
d1f28cf1 727static const char *resolve_service(int port)
aba5acdf
SH		 728{
729 static char buf[128];
730 static struct scache cache[256];
731
732 if (port == 0) {
733 buf[0] = '*';
734 buf[1] = 0;
735 return buf;
736 }
737
738 if (resolve_services) {
739 if (dg_proto == RAW_PROTO) {
740 return inet_proto_n2a(port, buf, sizeof(buf));
741 } else {
742 struct scache *c;
743 const char *res;
744 int hash = (port^(((unsigned long)dg_proto)>>2))&255;
745
ae665a52 746 for (c = &cache[hash]; c; c = c->next) {
aba5acdf
SH		 747 if (c->port == port &&
748 c->proto == dg_proto) {
749 if (c->name)
750 return c->name;
751 goto do_numeric;
752 }
753 }
754
755 if ((res = __resolve_service(port)) != NULL) {
756 if ((c = malloc(sizeof(*c))) == NULL)
757 goto do_numeric;
758 } else {
759 c = &cache[hash];
760 if (c->name)
761 free(c->name);
762 }
763 c->port = port;
764 c->name = NULL;
765 c->proto = dg_proto;
766 if (res) {
767 c->name = strdup(res);
768 c->next = cache[hash].next;
769 cache[hash].next = c;
770 }
771 if (c->name)
772 return c->name;
773 }
774 }
775
776 do_numeric:
777 sprintf(buf, "%u", port);
778 return buf;
779}
780
7c8a3cfb 781static void formatted_print(const inet_prefix *a, int port, unsigned int ifindex)
aba5acdf
SH		 782{
783 char buf[1024];
784 const char *ap = buf;
785 int est_len;
786
787 est_len = addr_width;
788
789 if (a->family == AF_INET) {
790 if (a->data[0] == 0) {
791 buf[0] = '*';
792 buf[1] = 0;
793 } else {
794 ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
795 }
796 } else {
797 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
798 est_len = strlen(ap);
799 if (est_len <= addr_width)
800 est_len = addr_width;
801 else
802 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
803 }
7c8a3cfb
FLB		 804 if (ifindex) {
805 const char *ifname = ll_index_to_name(ifindex);
806 const int len = strlen(ifname) + 1; /* +1 for percent char */
807
808 printf("%*s%%%s:%-*s ", est_len - len, ap, ifname, serv_width,
809 resolve_service(port));
810 } else
811 printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
aba5acdf
SH		 812}
813
814struct aafilter
815{
816 inet_prefix addr;
817 int port;
818 struct aafilter *next;
819};
820
d1f28cf1
SH		 821static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
822 int plen)
aba5acdf
SH		 823{
824 if (!inet_addr_match(a, p, plen))
825 return 0;
7d105b56 826
aba5acdf
SH		 827 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
828 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
829 * sockets. Fair? */
830 if (p->family == AF_INET && a->family == AF_INET6) {
831 if (a->data[0] == 0 && a->data[1] == 0 &&
832 a->data[2] == htonl(0xffff)) {
833 inet_prefix tmp = *a;
834 tmp.data[0] = a->data[3];
835 return inet_addr_match(&tmp, p, plen);
836 }
837 }
838 return 1;
839}
840
d1f28cf1 841static int unix_match(const inet_prefix *a, const inet_prefix *p)
aba5acdf
SH		 842{
843 char *addr, *pattern;
844 memcpy(&addr, a->data, sizeof(addr));
845 memcpy(&pattern, p->data, sizeof(pattern));
846 if (pattern == NULL)
847 return 1;
848 if (addr == NULL)
849 addr = "";
850 return !fnmatch(pattern, addr, 0);
851}
852
d1f28cf1 853static int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
aba5acdf
SH		 854{
855 switch (f->type) {
856 case SSF_S_AUTO:
857 {
858 static int low, high=65535;
859
860 if (s->local.family == AF_UNIX) {
861 char *p;
862 memcpy(&p, s->local.data, sizeof(p));
863 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
ae665a52 864 strspn(p+1, "0123456789abcdef") == 5);
aba5acdf
SH		 865 }
866 if (s->local.family == AF_PACKET)
867 return s->lport == 0 && s->local.data == 0;
868 if (s->local.family == AF_NETLINK)
869 return s->lport < 0;
870
871 if (!low) {
ab01dbbb 872 FILE *fp = ephemeral_ports_open();
aba5acdf
SH		 873 if (fp) {
874 fscanf(fp, "%d%d", &low, &high);
875 fclose(fp);
876 }
877 }
878 return s->lport >= low && s->lport <= high;
879 }
880 case SSF_DCOND:
881 {
882 struct aafilter *a = (void*)f->pred;
883 if (a->addr.family == AF_UNIX)
884 return unix_match(&s->remote, &a->addr);
885 if (a->port != -1 && a->port != s->rport)
886 return 0;
887 if (a->addr.bitlen) {
888 do {
889 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
890 return 1;
891 } while ((a = a->next) != NULL);
892 return 0;
893 }
894 return 1;
895 }
896 case SSF_SCOND:
897 {
898 struct aafilter *a = (void*)f->pred;
899 if (a->addr.family == AF_UNIX)
900 return unix_match(&s->local, &a->addr);
901 if (a->port != -1 && a->port != s->lport)
902 return 0;
903 if (a->addr.bitlen) {
904 do {
905 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
906 return 1;
ae665a52 907 } while ((a = a->next) != NULL);
aba5acdf
SH		 908 return 0;
909 }
910 return 1;
911 }
912 case SSF_D_GE:
913 {
914 struct aafilter *a = (void*)f->pred;
915 return s->rport >= a->port;
916 }
917 case SSF_D_LE:
918 {
919 struct aafilter *a = (void*)f->pred;
920 return s->rport <= a->port;
921 }
922 case SSF_S_GE:
923 {
924 struct aafilter *a = (void*)f->pred;
925 return s->lport >= a->port;
926 }
927 case SSF_S_LE:
928 {
929 struct aafilter *a = (void*)f->pred;
930 return s->lport <= a->port;
931 }
932
933 /* Yup. It is recursion. Sorry. */
934 case SSF_AND:
935 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
936 case SSF_OR:
937 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
938 case SSF_NOT:
939 return !run_ssfilter(f->pred, s);
940 default:
941 abort();
942 }
943}
944
ae665a52 945/* Relocate external jumps by reloc. */
b4b0b7d5 946static void ssfilter_patch(char *a, int len, int reloc)
aba5acdf
SH		 947{
948 while (len > 0) {
351efcde 949 struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a;
aba5acdf
SH		 950 if (op->no == len+4)
951 op->no += reloc;
952 len -= op->yes;
953 a += op->yes;
954 }
955 if (len < 0)
956 abort();
957}
958
b4b0b7d5 959static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
aba5acdf
SH		 960{
961 switch (f->type) {
962 case SSF_S_AUTO:
963 {
964 if (!(*bytecode=malloc(4))) abort();
351efcde 965 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
df39de8d 966 return 4;
aba5acdf
SH		 967 }
968 case SSF_DCOND:
969 case SSF_SCOND:
970 {
971 struct aafilter *a = (void*)f->pred;
972 struct aafilter *b;
973 char *ptr;
351efcde 974 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
aba5acdf
SH		 975 int len = 0;
976
977 for (b=a; b; b=b->next) {
351efcde 978 len += 4 + sizeof(struct inet_diag_hostcond);
aba5acdf
SH		 979 if (a->addr.family == AF_INET6)
980 len += 16;
981 else
982 len += 4;
983 if (b->next)
984 len += 4;
985 }
986 if (!(ptr = malloc(len))) abort();
987 *bytecode = ptr;
988 for (b=a; b; b=b->next) {
351efcde 989 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
aba5acdf 990 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
351efcde
SH		 991 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
992 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4);
aba5acdf 993
351efcde 994 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
aba5acdf
SH		 995 cond->family = a->addr.family;
996 cond->port = a->port;
997 cond->prefix_len = a->addr.bitlen;
998 memcpy(cond->addr, a->addr.data, alen);
999 ptr += oplen;
1000 if (b->next) {
351efcde
SH		 1001 op = (struct inet_diag_bc_op *)ptr;
1002 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
aba5acdf
SH		 1003 ptr += 4;
1004 }
1005 }
1006 return ptr - *bytecode;
1007 }
1008 case SSF_D_GE:
1009 {
1010 struct aafilter *x = (void*)f->pred;
1011 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 1012 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1013 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1014 return 8;
1015 }
1016 case SSF_D_LE:
1017 {
1018 struct aafilter *x = (void*)f->pred;
1019 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 1020 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1021 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1022 return 8;
1023 }
1024 case SSF_S_GE:
1025 {
1026 struct aafilter *x = (void*)f->pred;
1027 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 1028 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1029 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1030 return 8;
1031 }
1032 case SSF_S_LE:
1033 {
1034 struct aafilter *x = (void*)f->pred;
1035 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 1036 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1037 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1038 return 8;
1039 }
1040
1041 case SSF_AND:
1042 {
2a4fa1c3
AH		 1043 char *a1, *a2, *a;
1044 int l1, l2;
aba5acdf
SH		 1045 l1 = ssfilter_bytecompile(f->pred, &a1);
1046 l2 = ssfilter_bytecompile(f->post, &a2);
1047 if (!(a = malloc(l1+l2))) abort();
1048 memcpy(a, a1, l1);
1049 memcpy(a+l1, a2, l2);
1050 free(a1); free(a2);
1051 ssfilter_patch(a, l1, l2);
1052 *bytecode = a;
1053 return l1+l2;
1054 }
1055 case SSF_OR:
1056 {
2a4fa1c3
AH		 1057 char *a1, *a2, *a;
1058 int l1, l2;
aba5acdf
SH		 1059 l1 = ssfilter_bytecompile(f->pred, &a1);
1060 l2 = ssfilter_bytecompile(f->post, &a2);
1061 if (!(a = malloc(l1+l2+4))) abort();
1062 memcpy(a, a1, l1);
1063 memcpy(a+l1+4, a2, l2);
1064 free(a1); free(a2);
351efcde 1065 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
aba5acdf
SH		 1066 *bytecode = a;
1067 return l1+l2+4;
1068 }
1069 case SSF_NOT:
1070 {
2a4fa1c3
AH		 1071 char *a1, *a;
1072 int l1;
aba5acdf
SH		 1073 l1 = ssfilter_bytecompile(f->pred, &a1);
1074 if (!(a = malloc(l1+4))) abort();
1075 memcpy(a, a1, l1);
1076 free(a1);
351efcde 1077 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
aba5acdf
SH		 1078 *bytecode = a;
1079 return l1+4;
1080 }
1081 default:
1082 abort();
1083 }
1084}
1085
b4b0b7d5 1086static int remember_he(struct aafilter *a, struct hostent *he)
aba5acdf 1087{
ae665a52 1088 char **ptr = he->h_addr_list;
aba5acdf
SH		 1089 int cnt = 0;
1090 int len;
1091
1092 if (he->h_addrtype == AF_INET)
1093 len = 4;
1094 else if (he->h_addrtype == AF_INET6)
1095 len = 16;
1096 else
1097 return 0;
1098
1099 while (*ptr) {
1100 struct aafilter *b = a;
1101 if (a->addr.bitlen) {
1102 if ((b = malloc(sizeof(*b))) == NULL)
1103 return cnt;
1104 *b = *a;
1105 b->next = a->next;
1106 a->next = b;
1107 }
1108 memcpy(b->addr.data, *ptr, len);
1109 b->addr.bytelen = len;
1110 b->addr.bitlen = len*8;
1111 b->addr.family = he->h_addrtype;
1112 ptr++;
1113 cnt++;
1114 }
1115 return cnt;
1116}
1117
b4b0b7d5 1118static int get_dns_host(struct aafilter *a, const char *addr, int fam)
aba5acdf
SH		 1119{
1120 static int notfirst;
1121 int cnt = 0;
1122 struct hostent *he;
1123
1124 a->addr.bitlen = 0;
1125 if (!notfirst) {
1126 sethostent(1);
1127 notfirst = 1;
1128 }
1129 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1130 if (he)
1131 cnt = remember_he(a, he);
1132 if (fam == AF_UNSPEC) {
1133 he = gethostbyname2(addr, AF_INET6);
1134 if (he)
1135 cnt += remember_he(a, he);
1136 }
1137 return !cnt;
1138}
1139
b4b0b7d5 1140static int xll_initted = 0;
aba5acdf 1141
b4b0b7d5 1142static void xll_init(void)
aba5acdf
SH		 1143{
1144 struct rtnl_handle rth;
d2468da0
SH		 1145 if (rtnl_open(&rth, 0) < 0)
1146 exit(1);
1147
aba5acdf
SH		 1148 ll_init_map(&rth);
1149 rtnl_close(&rth);
1150 xll_initted = 1;
1151}
1152
b4b0b7d5 1153static const char *xll_index_to_name(int index)
aba5acdf
SH		 1154{
1155 if (!xll_initted)
1156 xll_init();
1157 return ll_index_to_name(index);
1158}
1159
b4b0b7d5 1160static int xll_name_to_index(const char *dev)
aba5acdf
SH		 1161{
1162 if (!xll_initted)
1163 xll_init();
1164 return ll_name_to_index(dev);
1165}
1166
1167void *parse_hostcond(char *addr)
1168{
1169 char *port = NULL;
1170 struct aafilter a;
1171 struct aafilter *res;
1172 int fam = preferred_family;
1173
1174 memset(&a, 0, sizeof(a));
1175 a.port = -1;
1176
1177 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1178 char *p;
1179 a.addr.family = AF_UNIX;
1180 if (strncmp(addr, "unix:", 5) == 0)
1181 addr+=5;
1182 p = strdup(addr);
1183 a.addr.bitlen = 8*strlen(p);
1184 memcpy(a.addr.data, &p, sizeof(p));
1185 goto out;
1186 }
1187
1188 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1189 a.addr.family = AF_PACKET;
1190 a.addr.bitlen = 0;
1191 if (strncmp(addr, "link:", 5) == 0)
1192 addr+=5;
1193 port = strchr(addr, ':');
1194 if (port) {
1195 *port = 0;
1196 if (port[1] && strcmp(port+1, "*")) {
1197 if (get_integer(&a.port, port+1, 0)) {
1198 if ((a.port = xll_name_to_index(port+1)) <= 0)
1199 return NULL;
1200 }
1201 }
1202 }
1203 if (addr[0] && strcmp(addr, "*")) {
1204 unsigned short tmp;
1205 a.addr.bitlen = 32;
1206 if (ll_proto_a2n(&tmp, addr))
1207 return NULL;
1208 a.addr.data[0] = ntohs(tmp);
1209 }
1210 goto out;
1211 }
1212
1213 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1214 a.addr.family = AF_NETLINK;
1215 a.addr.bitlen = 0;
1216 if (strncmp(addr, "netlink:", 8) == 0)
1217 addr+=8;
1218 port = strchr(addr, ':');
1219 if (port) {
1220 *port = 0;
1221 if (port[1] && strcmp(port+1, "*")) {
1222 if (get_integer(&a.port, port+1, 0)) {
1223 if (strcmp(port+1, "kernel") == 0)
1224 a.port = 0;
1225 else
1226 return NULL;
1227 }
1228 }
1229 }
1230 if (addr[0] && strcmp(addr, "*")) {
1231 a.addr.bitlen = 32;
b00daf6a 1232 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
1233 return NULL;
aba5acdf
SH		 1234 }
1235 goto out;
1236 }
1237
1238 if (strncmp(addr, "inet:", 5) == 0) {
1239 addr += 5;
1240 fam = AF_INET;
1241 } else if (strncmp(addr, "inet6:", 6) == 0) {
1242 addr += 6;
1243 fam = AF_INET6;
1244 }
1245
1246 /* URL-like literal [] */
1247 if (addr[0] == '[') {
1248 addr++;
1249 if ((port = strchr(addr, ']')) == NULL)
1250 return NULL;
1251 *port++ = 0;
1252 } else if (addr[0] == '*') {
1253 port = addr+1;
1254 } else {
1255 port = strrchr(strchr(addr, '/') ? : addr, ':');
1256 }
1257 if (port && *port) {
1258 if (*port != ':')
1259 return NULL;
1260 *port++ = 0;
1261 if (*port && *port != '*') {
1262 if (get_integer(&a.port, port, 0)) {
1263 struct servent *se1 = NULL;
1264 struct servent *se2 = NULL;
1265 if (current_filter.dbs&(1<<UDP_DB))
1266 se1 = getservbyname(port, UDP_PROTO);
1267 if (current_filter.dbs&(1<<TCP_DB))
1268 se2 = getservbyname(port, TCP_PROTO);
1269 if (se1 && se2 && se1->s_port != se2->s_port) {
1270 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1271 return NULL;
1272 }
1273 if (!se1)
1274 se1 = se2;
1275 if (se1) {
1276 a.port = ntohs(se1->s_port);
1277 } else {
1278 struct scache *s;
1279 for (s = rlist; s; s = s->next) {
1280 if ((s->proto == UDP_PROTO &&
1281 (current_filter.dbs&(1<<UDP_DB))) ||
1282 (s->proto == TCP_PROTO &&
1283 (current_filter.dbs&(1<<TCP_DB)))) {
1284 if (s->name && strcmp(s->name, port) == 0) {
1285 if (a.port > 0 && a.port != s->port) {
1286 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1287 return NULL;
1288 }
1289 a.port = s->port;
1290 }
1291 }
1292 }
1293 if (a.port <= 0) {
1294 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1295 return NULL;
1296 }
1297 }
1298 }
1299 }
1300 }
1301 if (addr && *addr && *addr != '*') {
1302 if (get_prefix_1(&a.addr, addr, fam)) {
1303 if (get_dns_host(&a, addr, fam)) {
1304 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1305 return NULL;
1306 }
1307 }
1308 }
1309
1310 out:
1311 res = malloc(sizeof(*res));
1312 if (res)
1313 memcpy(res, &a, sizeof(a));
1314 return res;
1315}
1316
ab01dbbb 1317static int tcp_show_line(char *line, const struct filter *f, int family)
aba5acdf
SH		 1318{
1319 struct tcpstat s;
1320 char *loc, *rem, *data;
1321 char opt[256];
1322 int n;
1323 char *p;
ae665a52 1324
aba5acdf
SH		 1325 if ((p = strchr(line, ':')) == NULL)
1326 return -1;
1327 loc = p+2;
ae665a52 1328
aba5acdf
SH		 1329 if ((p = strchr(loc, ':')) == NULL)
1330 return -1;
1331 p[5] = 0;
1332 rem = p+6;
ae665a52 1333
aba5acdf
SH		 1334 if ((p = strchr(rem, ':')) == NULL)
1335 return -1;
1336 p[5] = 0;
1337 data = p+6;
ae665a52 1338
aba5acdf
SH		 1339 do {
1340 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1341
1342 if (!(f->states & (1<<state)))
1343 return 0;
1344 } while (0);
ae665a52 1345
aba5acdf
SH		 1346 s.local.family = s.remote.family = family;
1347 if (family == AF_INET) {
1348 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1349 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1350 s.local.bytelen = s.remote.bytelen = 4;
1351 } else {
1352 sscanf(loc, "%08x%08x%08x%08x:%x",
1353 s.local.data,
1354 s.local.data+1,
1355 s.local.data+2,
1356 s.local.data+3,
1357 &s.lport);
1358 sscanf(rem, "%08x%08x%08x%08x:%x",
1359 s.remote.data,
1360 s.remote.data+1,
1361 s.remote.data+2,
1362 s.remote.data+3,
1363 &s.rport);
1364 s.local.bytelen = s.remote.bytelen = 16;
1365 }
ae665a52 1366
aba5acdf
SH		 1367 if (f->f && run_ssfilter(f->f, &s) == 0)
1368 return 0;
ae665a52 1369
aba5acdf 1370 opt[0] = 0;
e7113c61 1371 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n",
aba5acdf
SH		 1372 &s.state, &s.wq, &s.rq,
1373 &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1374 &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1375 &s.cwnd, &s.ssthresh, opt);
ae665a52 1376
aba5acdf
SH		 1377 if (n < 17)
1378 opt[0] = 0;
ae665a52 1379
aba5acdf
SH		 1380 if (n < 12) {
1381 s.rto = 0;
1382 s.cwnd = 2;
1383 s.ssthresh = -1;
1384 s.ato = s.qack = 0;
1385 }
ae665a52 1386
aba5acdf
SH		 1387 if (netid_width)
1388 printf("%-*s ", netid_width, "tcp");
1389 if (state_width)
1390 printf("%-*s ", state_width, sstate_name[s.state]);
ae665a52 1391
aba5acdf 1392 printf("%-6d %-6d ", s.rq, s.wq);
ae665a52 1393
7c8a3cfb
FLB		 1394 formatted_print(&s.local, s.lport, 0);
1395 formatted_print(&s.remote, s.rport, 0);
ae665a52 1396
aba5acdf
SH		 1397 if (show_options) {
1398 if (s.timer) {
1399 if (s.timer > 4)
1400 s.timer = 5;
1401 printf(" timer:(%s,%s,%d)",
1402 tmr_name[s.timer],
1403 print_hz_timer(s.timeout),
1404 s.timer != 1 ? s.probes : s.retrs);
1405 }
1406 }
1407 if (show_tcpinfo) {
4c1db131
SH		 1408 int hz = get_user_hz();
1409 if (s.rto && s.rto != 3*hz)
1410 printf(" rto:%g", (double)s.rto/hz);
aba5acdf 1411 if (s.ato)
4c1db131 1412 printf(" ato:%g", (double)s.ato/hz);
aba5acdf
SH		 1413 if (s.cwnd != 2)
1414 printf(" cwnd:%d", s.cwnd);
1415 if (s.ssthresh != -1)
1416 printf(" ssthresh:%d", s.ssthresh);
1417 if (s.qack/2)
1418 printf(" qack:%d", s.qack/2);
1419 if (s.qack&1)
1420 printf(" bidir");
1421 }
116ac927
RH		 1422 char *buf = NULL;
1423 if (show_proc_ctx || show_sock_ctx) {
1424 if (find_entry(s.ino, &buf,
1425 (show_proc_ctx & show_sock_ctx) ?
1426 PROC_SOCK_CTX : PROC_CTX) > 0) {
1427 printf(" users:(%s)", buf);
1428 free(buf);
1429 }
1430 } else if (show_users) {
1431 if (find_entry(s.ino, &buf, USERS) > 0) {
1432 printf(" users:(%s)", buf);
1433 free(buf);
1434 }
aba5acdf 1435 }
116ac927 1436
aba5acdf
SH		 1437 if (show_details) {
1438 if (s.uid)
1439 printf(" uid:%u", (unsigned)s.uid);
e7113c61 1440 printf(" ino:%u", s.ino);
aba5acdf
SH		 1441 printf(" sk:%llx", s.sk);
1442 if (opt[0])
1443 printf(" opt:\"%s\"", opt);
1444 }
1445 printf("\n");
1446
1447 return 0;
1448}
1449
ab01dbbb
SH		 1450static int generic_record_read(FILE *fp,
1451 int (*worker)(char*, const struct filter *, int),
1452 const struct filter *f, int fam)
aba5acdf 1453{
ab01dbbb 1454 char line[256];
aba5acdf 1455
ab01dbbb
SH		 1456 /* skip header */
1457 if (fgets(line, sizeof(line), fp) == NULL)
aba5acdf 1458 goto outerr;
ab01dbbb
SH		 1459
1460 while (fgets(line, sizeof(line), fp) != NULL) {
1461 int n = strlen(line);
1462 if (n == 0 || line[n-1] != '\n') {
1463 errno = -EINVAL;
1464 return -1;
aba5acdf 1465 }
ab01dbbb 1466 line[n-1] = 0;
aba5acdf 1467
ab01dbbb
SH		 1468 if (worker(line, f, fam) < 0)
1469 return 0;
1470 }
aba5acdf 1471outerr:
ab01dbbb
SH		 1472
1473 return ferror(fp) ? -1 : 0;
aba5acdf 1474}
ae665a52 1475
b4b0b7d5
SH		 1476static char *sprint_bw(char *buf, double bw)
1477{
ae665a52 1478 if (bw > 1000000.)
b4b0b7d5
SH		 1479 sprintf(buf,"%.1fM", bw / 1000000.);
1480 else if (bw > 1000.)
1481 sprintf(buf,"%.1fK", bw / 1000.);
1482 else
1483 sprintf(buf, "%g", bw);
1484
1485 return buf;
1486}
aba5acdf 1487
51ff9f24
HFS		 1488static void print_skmeminfo(struct rtattr *tb[], int attrtype)
1489{
1490 const __u32 *skmeminfo;
1491 if (!tb[attrtype])
1492 return;
1493 skmeminfo = RTA_DATA(tb[attrtype]);
1494
1495 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
1496 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
1497 skmeminfo[SK_MEMINFO_RCVBUF],
1498 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
1499 skmeminfo[SK_MEMINFO_SNDBUF],
1500 skmeminfo[SK_MEMINFO_FWD_ALLOC],
1501 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
1502 skmeminfo[SK_MEMINFO_OPTMEM]);
1503
1504 if (RTA_PAYLOAD(tb[attrtype]) >=
1505 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
1506 printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
1507
1508 printf(")");
1509}
1510
5b816047
PE		 1511static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
1512 struct rtattr *tb[])
7d105b56 1513{
b4b0b7d5
SH		 1514 char b1[64];
1515 double rtt = 0;
7d105b56 1516
910b0397 1517 if (tb[INET_DIAG_SKMEMINFO]) {
51ff9f24 1518 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
c6d6c92c 1519 } else if (tb[INET_DIAG_MEMINFO]) {
351efcde
SH		 1520 const struct inet_diag_meminfo *minfo
1521 = RTA_DATA(tb[INET_DIAG_MEMINFO]);
7d105b56 1522 printf(" mem:(r%u,w%u,f%u,t%u)",
351efcde
SH		 1523 minfo->idiag_rmem,
1524 minfo->idiag_wmem,
1525 minfo->idiag_fmem,
1526 minfo->idiag_tmem);
7d105b56
SH		 1527 }
1528
351efcde 1529 if (tb[INET_DIAG_INFO]) {
05e18118 1530 struct tcp_info *info;
351efcde 1531 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
05e18118
SH		 1532
1533 /* workaround for older kernels with less fields */
1534 if (len < sizeof(*info)) {
1535 info = alloca(sizeof(*info));
1536 memset(info, 0, sizeof(*info));
351efcde 1537 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
05e18118 1538 } else
351efcde 1539 info = RTA_DATA(tb[INET_DIAG_INFO]);
05e18118 1540
b4b0b7d5
SH		 1541 if (show_options) {
1542 if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1543 printf(" ts");
1544 if (info->tcpi_options & TCPI_OPT_SACK)
1545 printf(" sack");
1546 if (info->tcpi_options & TCPI_OPT_ECN)
1547 printf(" ecn");
719b958b
ED		 1548 if (info->tcpi_options & TCPI_OPT_ECN_SEEN)
1549 printf(" ecnseen");
9cb1eccf
ED		 1550 if (info->tcpi_options & TCPI_OPT_SYN_DATA)
1551 printf(" fastopen");
b4b0b7d5 1552 }
52d5ac3f 1553
351efcde 1554 if (tb[INET_DIAG_CONG])
ff24746c 1555 printf(" %s", rta_getattr_str(tb[INET_DIAG_CONG]));
ea8fc104 1556
ae665a52 1557 if (info->tcpi_options & TCPI_OPT_WSCALE)
05e18118
SH		 1558 printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1559 info->tcpi_rcv_wscale);
7d105b56
SH		 1560 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1561 printf(" rto:%g", (double)info->tcpi_rto/1000);
624a06e6
ED		 1562 if (info->tcpi_backoff)
1563 printf(" backoff:%u", info->tcpi_backoff);
7d105b56
SH		 1564 if (info->tcpi_rtt)
1565 printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1566 (double)info->tcpi_rttvar/1000);
1567 if (info->tcpi_ato)
1568 printf(" ato:%g", (double)info->tcpi_ato/1000);
4d354347
BH		 1569 if (info->tcpi_snd_mss)
1570 printf(" mss:%d", info->tcpi_snd_mss);
7d105b56
SH		 1571 if (info->tcpi_snd_cwnd != 2)
1572 printf(" cwnd:%d", info->tcpi_snd_cwnd);
1573 if (info->tcpi_snd_ssthresh < 0xFFFF)
1574 printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
52d5ac3f 1575
b4b0b7d5 1576 rtt = (double) info->tcpi_rtt;
351efcde 1577 if (tb[INET_DIAG_VEGASINFO]) {
05e18118 1578 const struct tcpvegas_info *vinfo
351efcde 1579 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
7d105b56 1580
ae665a52 1581 if (vinfo->tcpv_enabled &&
ea8fc104
SH		 1582 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1583 rtt = vinfo->tcpv_rtt;
b4b0b7d5
SH		 1584 }
1585
907e1aca
DB		 1586 if (tb[INET_DIAG_DCTCPINFO]) {
1587 const struct tcp_dctcp_info *dinfo
1588 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
1589
1590 if (dinfo->dctcp_enabled) {
1591 printf(" ce_state %u alpha %u ab_ecn %u ab_tot %u",
1592 dinfo->dctcp_ce_state, dinfo->dctcp_alpha,
1593 dinfo->dctcp_ab_ecn, dinfo->dctcp_ab_tot);
1594 } else {
1595 printf(" fallback_mode");
1596 }
1597 }
1598
b4b0b7d5
SH		 1599 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1600 printf(" send %sbps",
1601 sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1602 (double) info->tcpi_snd_mss * 8000000.
1603 / rtt));
7d105b56 1604 }
b4b0b7d5 1605
624a06e6
ED		 1606 if (info->tcpi_last_data_sent)
1607 printf(" lastsnd:%u", info->tcpi_last_data_sent);
1608
1609 if (info->tcpi_last_data_recv)
1610 printf(" lastrcv:%u", info->tcpi_last_data_recv);
1611
1612 if (info->tcpi_last_ack_recv)
1613 printf(" lastack:%u", info->tcpi_last_ack_recv);
1614
eb6028b2
ED		 1615 if (info->tcpi_pacing_rate &&
1616 info->tcpi_pacing_rate != ~0ULL) {
1617 printf(" pacing_rate %sbps",
1618 sprint_bw(b1, info->tcpi_pacing_rate * 8.));
1619
1620 if (info->tcpi_max_pacing_rate &&
1621 info->tcpi_max_pacing_rate != ~0ULL)
1622 printf("/%sbps",
1623 sprint_bw(b1, info->tcpi_max_pacing_rate * 8.));
1624 }
260804f4
ED		 1625 if (info->tcpi_unacked)
1626 printf(" unacked:%u", info->tcpi_unacked);
1627 if (info->tcpi_retrans || info->tcpi_total_retrans)
1628 printf(" retrans:%u/%u", info->tcpi_retrans,
1629 info->tcpi_total_retrans);
1630 if (info->tcpi_lost)
1631 printf(" lost:%u", info->tcpi_lost);
1632 if (info->tcpi_sacked && r->idiag_state != SS_LISTEN)
1633 printf(" sacked:%u", info->tcpi_sacked);
1634 if (info->tcpi_fackets)
1635 printf(" fackets:%u", info->tcpi_fackets);
1636 if (info->tcpi_reordering != 3)
1637 printf(" reordering:%d", info->tcpi_reordering);
b4b0b7d5
SH		 1638 if (info->tcpi_rcv_rtt)
1639 printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1640 if (info->tcpi_rcv_space)
1641 printf(" rcv_space:%d", info->tcpi_rcv_space);
1642
7d105b56 1643 }
7d105b56 1644}
aba5acdf 1645
77a8ca81
PE		 1646static char *proto_name(int protocol)
1647{
1648 switch (protocol) {
1649 case IPPROTO_UDP:
1650 return "udp";
1651 case IPPROTO_TCP:
1652 return "tcp";
1653 case IPPROTO_DCCP:
1654 return "dccp";
1655 }
1656
1657 return "???";
1658}
1659
1660static int inet_show_sock(struct nlmsghdr *nlh, struct filter *f, int protocol)
aba5acdf 1661{
5b816047 1662 struct rtattr * tb[INET_DIAG_MAX+1];
351efcde 1663 struct inet_diag_msg *r = NLMSG_DATA(nlh);
aba5acdf
SH		 1664 struct tcpstat s;
1665
5b816047
PE		 1666 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
1667 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1668
351efcde
SH		 1669 s.state = r->idiag_state;
1670 s.local.family = s.remote.family = r->idiag_family;
1671 s.lport = ntohs(r->id.idiag_sport);
1672 s.rport = ntohs(r->id.idiag_dport);
aba5acdf
SH		 1673 if (s.local.family == AF_INET) {
1674 s.local.bytelen = s.remote.bytelen = 4;
1675 } else {
1676 s.local.bytelen = s.remote.bytelen = 16;
1677 }
351efcde
SH		 1678 memcpy(s.local.data, r->id.idiag_src, s.local.bytelen);
1679 memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen);
aba5acdf
SH		 1680
1681 if (f && f->f && run_ssfilter(f->f, &s) == 0)
1682 return 0;
1683
1684 if (netid_width)
77a8ca81 1685 printf("%-*s ", netid_width, proto_name(protocol));
aba5acdf
SH		 1686 if (state_width)
1687 printf("%-*s ", state_width, sstate_name[s.state]);
1688
351efcde 1689 printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue);
aba5acdf 1690
7c8a3cfb
FLB		 1691 formatted_print(&s.local, s.lport, r->id.idiag_if);
1692 formatted_print(&s.remote, s.rport, 0);
aba5acdf
SH		 1693
1694 if (show_options) {
351efcde
SH		 1695 if (r->idiag_timer) {
1696 if (r->idiag_timer > 4)
1697 r->idiag_timer = 5;
aba5acdf 1698 printf(" timer:(%s,%s,%d)",
351efcde
SH		 1699 tmr_name[r->idiag_timer],
1700 print_ms_timer(r->idiag_expires),
1701 r->idiag_retrans);
aba5acdf
SH		 1702 }
1703 }
116ac927
RH		 1704 char *buf = NULL;
1705
1706 if (show_proc_ctx || show_sock_ctx) {
1707 if (find_entry(r->idiag_inode, &buf,
1708 (show_proc_ctx & show_sock_ctx) ?
1709 PROC_SOCK_CTX : PROC_CTX) > 0) {
1710 printf(" users:(%s)", buf);
1711 free(buf);
1712 }
1713 } else if (show_users) {
1714 if (find_entry(r->idiag_inode, &buf, USERS) > 0) {
1715 printf(" users:(%s)", buf);
1716 free(buf);
1717 }
aba5acdf 1718 }
116ac927 1719
aba5acdf 1720 if (show_details) {
351efcde
SH		 1721 if (r->idiag_uid)
1722 printf(" uid:%u", (unsigned)r->idiag_uid);
e7113c61 1723 printf(" ino:%u", r->idiag_inode);
bbe32053 1724 printf(" sk:");
351efcde
SH		 1725 if (r->id.idiag_cookie[1] != 0)
1726 printf("%08x", r->id.idiag_cookie[1]);
bbe32053 1727 printf("%08x", r->id.idiag_cookie[0]);
5b816047
PE		 1728 if (tb[INET_DIAG_SHUTDOWN]) {
1729 unsigned char mask;
1730 mask = *(__u8 *)RTA_DATA(tb[INET_DIAG_SHUTDOWN]);
1731 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
1732 }
aba5acdf
SH		 1733 }
1734 if (show_mem || show_tcpinfo) {
7d105b56 1735 printf("\n\t");
5b816047 1736 tcp_show_info(nlh, r, tb);
aba5acdf 1737 }
7d105b56 1738
aba5acdf
SH		 1739 printf("\n");
1740
1741 return 0;
aba5acdf
SH		 1742}
1743
746a695f 1744static int tcpdiag_send(int fd, int protocol, struct filter *f)
aba5acdf 1745{
aba5acdf
SH		 1746 struct sockaddr_nl nladdr;
1747 struct {
1748 struct nlmsghdr nlh;
351efcde 1749 struct inet_diag_req r;
aba5acdf
SH		 1750 } req;
1751 char *bc = NULL;
1752 int bclen;
1753 struct msghdr msg;
1754 struct rtattr rta;
aba5acdf
SH		 1755 struct iovec iov[3];
1756
346f8ca8
PE		 1757 if (protocol == IPPROTO_UDP)
1758 return -1;
1759
aba5acdf
SH		 1760 memset(&nladdr, 0, sizeof(nladdr));
1761 nladdr.nl_family = AF_NETLINK;
1762
1763 req.nlh.nlmsg_len = sizeof(req);
3fe5b534
PE		 1764 if (protocol == IPPROTO_TCP)
1765 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
1766 else
1767 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
aba5acdf
SH		 1768 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1769 req.nlh.nlmsg_pid = 0;
1770 req.nlh.nlmsg_seq = 123456;
1771 memset(&req.r, 0, sizeof(req.r));
351efcde
SH		 1772 req.r.idiag_family = AF_INET;
1773 req.r.idiag_states = f->states;
910b0397 1774 if (show_mem) {
ae665a52 1775 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
910b0397
SW		 1776 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
1777 }
b4b0b7d5 1778
7d105b56 1779 if (show_tcpinfo) {
351efcde
SH		 1780 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1781 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1782 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
7d105b56 1783 }
aba5acdf 1784
ae665a52
SH		 1785 iov[0] = (struct iovec){
1786 .iov_base = &req,
1787 .iov_len = sizeof(req)
ea8fc104 1788 };
aba5acdf
SH		 1789 if (f->f) {
1790 bclen = ssfilter_bytecompile(f->f, &bc);
351efcde 1791 rta.rta_type = INET_DIAG_REQ_BYTECODE;
aba5acdf
SH		 1792 rta.rta_len = RTA_LENGTH(bclen);
1793 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1794 iov[2] = (struct iovec){ bc, bclen };
1795 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1796 }
1797
1798 msg = (struct msghdr) {
ae665a52 1799 .msg_name = (void*)&nladdr,
ea8fc104 1800 .msg_namelen = sizeof(nladdr),
ae665a52 1801 .msg_iov = iov,
ea8fc104 1802 .msg_iovlen = f->f ? 3 : 1,
aba5acdf
SH		 1803 };
1804
930a75f9
ED		 1805 if (sendmsg(fd, &msg, 0) < 0) {
1806 close(fd);
aba5acdf 1807 return -1;
930a75f9 1808 }
aba5acdf 1809
746a695f
PE		 1810 return 0;
1811}
1812
886d19d6
PE		 1813static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
1814{
1815 struct sockaddr_nl nladdr;
5fb421d4 1816 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
886d19d6
PE		 1817 char *bc = NULL;
1818 int bclen;
1819 struct msghdr msg;
1820 struct rtattr rta;
1821 struct iovec iov[3];
1822
1823 if (family == PF_UNSPEC)
1824 return tcpdiag_send(fd, protocol, f);
1825
1826 memset(&nladdr, 0, sizeof(nladdr));
1827 nladdr.nl_family = AF_NETLINK;
1828
886d19d6
PE		 1829 memset(&req.r, 0, sizeof(req.r));
1830 req.r.sdiag_family = family;
1831 req.r.sdiag_protocol = protocol;
1832 req.r.idiag_states = f->states;
1833 if (show_mem) {
1834 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
1835 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
1836 }
1837
1838 if (show_tcpinfo) {
1839 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1840 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1841 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
1842 }
1843
1844 iov[0] = (struct iovec){
1845 .iov_base = &req,
1846 .iov_len = sizeof(req)
1847 };
1848 if (f->f) {
1849 bclen = ssfilter_bytecompile(f->f, &bc);
1850 rta.rta_type = INET_DIAG_REQ_BYTECODE;
1851 rta.rta_len = RTA_LENGTH(bclen);
1852 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1853 iov[2] = (struct iovec){ bc, bclen };
1854 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1855 }
1856
1857 msg = (struct msghdr) {
1858 .msg_name = (void*)&nladdr,
1859 .msg_namelen = sizeof(nladdr),
1860 .msg_iov = iov,
1861 .msg_iovlen = f->f ? 3 : 1,
1862 };
1863
1864 if (sendmsg(fd, &msg, 0) < 0) {
1865 close(fd);
1866 return -1;
1867 }
1868
1869 return 0;
1870}
1871
746a695f
PE		 1872static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
1873{
886d19d6 1874 int fd, family;
746a695f
PE		 1875 struct sockaddr_nl nladdr;
1876 struct msghdr msg;
e557212e 1877 char buf[16384];
746a695f
PE		 1878 struct iovec iov[3];
1879
1880 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
1881 return -1;
1882
886d19d6
PE		 1883 family = PF_INET;
1884again:
1885 if (sockdiag_send(family, fd, protocol, f))
746a695f
PE		 1886 return -1;
1887
1888 memset(&nladdr, 0, sizeof(nladdr));
1889 nladdr.nl_family = AF_NETLINK;
1890
ae665a52
SH		 1891 iov[0] = (struct iovec){
1892 .iov_base = buf,
1893 .iov_len = sizeof(buf)
ea8fc104 1894 };
aba5acdf
SH		 1895
1896 while (1) {
1897 int status;
1898 struct nlmsghdr *h;
1899
1900 msg = (struct msghdr) {
1901 (void*)&nladdr, sizeof(nladdr),
1902 iov, 1,
1903 NULL, 0,
1904 0
1905 };
1906
1907 status = recvmsg(fd, &msg, 0);
1908
1909 if (status < 0) {
1910 if (errno == EINTR)
1911 continue;
1912 perror("OVERRUN");
1913 continue;
1914 }
1915 if (status == 0) {
1916 fprintf(stderr, "EOF on netlink\n");
c51577cd 1917 close(fd);
aba5acdf
SH		 1918 return 0;
1919 }
1920
1921 if (dump_fp)
1922 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1923
1924 h = (struct nlmsghdr*)buf;
1925 while (NLMSG_OK(h, status)) {
1926 int err;
a37b01c1 1927 struct inet_diag_msg *r = NLMSG_DATA(h);
aba5acdf
SH		 1928
1929 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1930 h->nlmsg_seq != 123456)
1931 goto skip_it;
1932
886d19d6
PE		 1933 if (h->nlmsg_type == NLMSG_DONE)
1934 goto done;
1935
aba5acdf
SH		 1936 if (h->nlmsg_type == NLMSG_ERROR) {
1937 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1938 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1939 fprintf(stderr, "ERROR truncated\n");
1940 } else {
886d19d6
PE		 1941 if (family != PF_UNSPEC) {
1942 family = PF_UNSPEC;
1943 goto again;
1944 }
1945
aba5acdf 1946 errno = -err->error;
930a75f9
ED		 1947 if (errno == EOPNOTSUPP) {
1948 close(fd);
1949 return -1;
1950 }
aba5acdf
SH		 1951 perror("TCPDIAG answers");
1952 }
886d19d6
PE		 1953
1954 goto done;
aba5acdf
SH		 1955 }
1956 if (!dump_fp) {
a37b01c1
LY		 1957 if (!(f->families & (1<<r->idiag_family))) {
1958 h = NLMSG_NEXT(h, status);
1959 continue;
1960 }
77a8ca81 1961 err = inet_show_sock(h, NULL, protocol);
c51577cd
MT		 1962 if (err < 0) {
1963 close(fd);
aba5acdf 1964 return err;
c51577cd 1965 }
aba5acdf
SH		 1966 }
1967
1968skip_it:
1969 h = NLMSG_NEXT(h, status);
1970 }
1971 if (msg.msg_flags & MSG_TRUNC) {
1972 fprintf(stderr, "Message truncated\n");
1973 continue;
1974 }
1975 if (status) {
1976 fprintf(stderr, "!!!Remnant of size %d\n", status);
1977 exit(1);
1978 }
1979 }
886d19d6
PE		 1980done:
1981 if (family == PF_INET) {
1982 family = PF_INET6;
1983 goto again;
1984 }
1985
c51577cd 1986 close(fd);
aba5acdf
SH		 1987 return 0;
1988}
1989
ab01dbbb 1990static int tcp_show_netlink_file(struct filter *f)
aba5acdf
SH		 1991{
1992 FILE *fp;
e557212e 1993 char buf[16384];
aba5acdf
SH		 1994
1995 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1996 perror("fopen($TCPDIAG_FILE)");
1997 return -1;
1998 }
1999
2000 while (1) {
2001 int status, err;
2002 struct nlmsghdr *h = (struct nlmsghdr*)buf;
2003
2004 status = fread(buf, 1, sizeof(*h), fp);
2005 if (status < 0) {
2006 perror("Reading header from $TCPDIAG_FILE");
2007 return -1;
2008 }
2009 if (status != sizeof(*h)) {
2010 perror("Unexpected EOF reading $TCPDIAG_FILE");
2011 return -1;
2012 }
2013
2014 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
2015
2016 if (status < 0) {
2017 perror("Reading $TCPDIAG_FILE");
2018 return -1;
2019 }
2020 if (status + sizeof(*h) < h->nlmsg_len) {
2021 perror("Unexpected EOF reading $TCPDIAG_FILE");
2022 return -1;
2023 }
2024
2025 /* The only legal exit point */
2026 if (h->nlmsg_type == NLMSG_DONE)
2027 return 0;
2028
2029 if (h->nlmsg_type == NLMSG_ERROR) {
2030 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
2031 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2032 fprintf(stderr, "ERROR truncated\n");
2033 } else {
2034 errno = -err->error;
2035 perror("TCPDIAG answered");
2036 }
2037 return -1;
2038 }
2039
77a8ca81 2040 err = inet_show_sock(h, f, IPPROTO_TCP);
aba5acdf
SH		 2041 if (err < 0)
2042 return err;
2043 }
2044}
2045
ab01dbbb 2046static int tcp_show(struct filter *f, int socktype)
aba5acdf 2047{
ab01dbbb 2048 FILE *fp = NULL;
aba5acdf
SH		 2049 char *buf = NULL;
2050 int bufsize = 64*1024;
2051
2052 dg_proto = TCP_PROTO;
2053
2054 if (getenv("TCPDIAG_FILE"))
2055 return tcp_show_netlink_file(f);
2056
2057 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
3fe5b534 2058 && inet_show_netlink(f, NULL, socktype) == 0)
aba5acdf
SH		 2059 return 0;
2060
2061 /* Sigh... We have to parse /proc/net/tcp... */
2062
ab01dbbb 2063
aba5acdf
SH		 2064 /* Estimate amount of sockets and try to allocate
2065 * huge buffer to read all the table at one read.
2066 * Limit it by 16MB though. The assumption is: as soon as
2067 * kernel was able to hold information about N connections,
2068 * it is able to give us some memory for snapshot.
2069 */
2070 if (1) {
2071 int guess = slabstat.socks+slabstat.tcp_syns;
2072 if (f->states&(1<<SS_TIME_WAIT))
2073 guess += slabstat.tcp_tws;
2074 if (guess > (16*1024*1024)/128)
2075 guess = (16*1024*1024)/128;
2076 guess *= 128;
2077 if (guess > bufsize)
2078 bufsize = guess;
2079 }
2080 while (bufsize >= 64*1024) {
2081 if ((buf = malloc(bufsize)) != NULL)
2082 break;
2083 bufsize /= 2;
2084 }
2085 if (buf == NULL) {
2086 errno = ENOMEM;
2087 return -1;
2088 }
2089
2090 if (f->families & (1<<AF_INET)) {
69cae645 2091 if ((fp = net_tcp_open()) == NULL)
aba5acdf 2092 goto outerr;
ab01dbbb
SH		 2093
2094 setbuffer(fp, buf, bufsize);
2095 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
aba5acdf 2096 goto outerr;
ab01dbbb 2097 fclose(fp);
aba5acdf
SH		 2098 }
2099
2100 if ((f->families & (1<<AF_INET6)) &&
69cae645 2101 (fp = net_tcp6_open()) != NULL) {
ab01dbbb
SH		 2102 setbuffer(fp, buf, bufsize);
2103 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
aba5acdf 2104 goto outerr;
ab01dbbb 2105 fclose(fp);
aba5acdf
SH		 2106 }
2107
2108 free(buf);
2109 return 0;
2110
2111outerr:
2112 do {
2113 int saved_errno = errno;
2114 if (buf)
2115 free(buf);
ab01dbbb
SH		 2116 if (fp)
2117 fclose(fp);
aba5acdf
SH		 2118 errno = saved_errno;
2119 return -1;
2120 } while (0);
2121}
2122
2123
d1f28cf1 2124static int dgram_show_line(char *line, const struct filter *f, int family)
aba5acdf
SH		 2125{
2126 struct tcpstat s;
2127 char *loc, *rem, *data;
2128 char opt[256];
2129 int n;
2130 char *p;
2131
2132 if ((p = strchr(line, ':')) == NULL)
2133 return -1;
2134 loc = p+2;
2135
2136 if ((p = strchr(loc, ':')) == NULL)
2137 return -1;
2138 p[5] = 0;
2139 rem = p+6;
2140
2141 if ((p = strchr(rem, ':')) == NULL)
2142 return -1;
2143 p[5] = 0;
2144 data = p+6;
2145
2146 do {
2147 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2148
2149 if (!(f->states & (1<<state)))
2150 return 0;
2151 } while (0);
2152
2153 s.local.family = s.remote.family = family;
2154 if (family == AF_INET) {
2155 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
2156 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
2157 s.local.bytelen = s.remote.bytelen = 4;
2158 } else {
2159 sscanf(loc, "%08x%08x%08x%08x:%x",
2160 s.local.data,
2161 s.local.data+1,
2162 s.local.data+2,
2163 s.local.data+3,
2164 &s.lport);
2165 sscanf(rem, "%08x%08x%08x%08x:%x",
2166 s.remote.data,
2167 s.remote.data+1,
2168 s.remote.data+2,
2169 s.remote.data+3,
2170 &s.rport);
2171 s.local.bytelen = s.remote.bytelen = 16;
2172 }
2173
2174 if (f->f && run_ssfilter(f->f, &s) == 0)
2175 return 0;
2176
2177 opt[0] = 0;
e7113c61 2178 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
aba5acdf
SH		 2179 &s.state, &s.wq, &s.rq,
2180 &s.uid, &s.ino,
2181 &s.refcnt, &s.sk, opt);
2182
2183 if (n < 9)
2184 opt[0] = 0;
2185
2186 if (netid_width)
2187 printf("%-*s ", netid_width, dg_proto);
2188 if (state_width)
2189 printf("%-*s ", state_width, sstate_name[s.state]);
2190
2191 printf("%-6d %-6d ", s.rq, s.wq);
2192
7c8a3cfb
FLB		 2193 formatted_print(&s.local, s.lport, 0);
2194 formatted_print(&s.remote, s.rport, 0);
aba5acdf 2195
116ac927
RH		 2196 char *buf = NULL;
2197
2198 if (show_proc_ctx || show_sock_ctx) {
2199 if (find_entry(s.ino, &buf,
2200 (show_proc_ctx & show_sock_ctx) ?
2201 PROC_SOCK_CTX : PROC_CTX) > 0) {
2202 printf(" users:(%s)", buf);
2203 free(buf);
2204 }
2205 } else if (show_users) {
2206 if (find_entry(s.ino, &buf, USERS) > 0) {
2207 printf(" users:(%s)", buf);
2208 free(buf);
2209 }
aba5acdf
SH		 2210 }
2211
2212 if (show_details) {
2213 if (s.uid)
2214 printf(" uid=%u", (unsigned)s.uid);
e7113c61 2215 printf(" ino=%u", s.ino);
aba5acdf
SH		 2216 printf(" sk=%llx", s.sk);
2217 if (opt[0])
2218 printf(" opt:\"%s\"", opt);
2219 }
2220 printf("\n");
2221
2222 return 0;
2223}
2224
2225
d1f28cf1 2226static int udp_show(struct filter *f)
aba5acdf 2227{
ab01dbbb 2228 FILE *fp = NULL;
aba5acdf 2229
346f8ca8
PE		 2230 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
2231 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
2232 return 0;
2233
aba5acdf
SH		 2234 dg_proto = UDP_PROTO;
2235
2236 if (f->families&(1<<AF_INET)) {
69cae645 2237 if ((fp = net_udp_open()) == NULL)
aba5acdf 2238 goto outerr;
ab01dbbb 2239 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
aba5acdf 2240 goto outerr;
ab01dbbb 2241 fclose(fp);
aba5acdf
SH		 2242 }
2243
2244 if ((f->families&(1<<AF_INET6)) &&
69cae645 2245 (fp = net_udp6_open()) != NULL) {
ab01dbbb 2246 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
aba5acdf 2247 goto outerr;
ab01dbbb 2248 fclose(fp);
aba5acdf
SH		 2249 }
2250 return 0;
2251
2252outerr:
2253 do {
2254 int saved_errno = errno;
ab01dbbb
SH		 2255 if (fp)
2256 fclose(fp);
aba5acdf
SH		 2257 errno = saved_errno;
2258 return -1;
2259 } while (0);
2260}
2261
d1f28cf1 2262static int raw_show(struct filter *f)
aba5acdf 2263{
ab01dbbb 2264 FILE *fp = NULL;
aba5acdf
SH		 2265
2266 dg_proto = RAW_PROTO;
2267
2268 if (f->families&(1<<AF_INET)) {
69cae645 2269 if ((fp = net_raw_open()) == NULL)
aba5acdf 2270 goto outerr;
ab01dbbb 2271 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
aba5acdf 2272 goto outerr;
ab01dbbb 2273 fclose(fp);
aba5acdf
SH		 2274 }
2275
2276 if ((f->families&(1<<AF_INET6)) &&
69cae645 2277 (fp = net_raw6_open()) != NULL) {
ab01dbbb 2278 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
aba5acdf 2279 goto outerr;
ab01dbbb 2280 fclose(fp);
aba5acdf
SH		 2281 }
2282 return 0;
2283
2284outerr:
2285 do {
2286 int saved_errno = errno;
ab01dbbb
SH		 2287 if (fp)
2288 fclose(fp);
aba5acdf
SH		 2289 errno = saved_errno;
2290 return -1;
2291 } while (0);
2292}
2293
2294
2295struct unixstat
2296{
2297 struct unixstat *next;
2298 int ino;
2299 int peer;
2300 int rq;
2301 int wq;
2302 int state;
2303 int type;
2304 char *name;
2305};
2306
2307
2308
2309int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
2310 SS_ESTABLISHED, SS_CLOSING };
2311
2312
2313#define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
2314
d1f28cf1 2315static void unix_list_free(struct unixstat *list)
aba5acdf
SH		 2316{
2317 while (list) {
2318 struct unixstat *s = list;
2319 list = list->next;
2320 if (s->name)
2321 free(s->name);
2322 free(s);
2323 }
2324}
2325
30b669d7
MY		 2326static const char *unix_netid_name(int type)
2327{
2328 const char *netid;
2329
2330 switch (type) {
2331 case SOCK_STREAM:
2332 netid = "u_str";
2333 break;
2334 case SOCK_SEQPACKET:
2335 netid = "u_seq";
2336 break;
2337 case SOCK_DGRAM:
2338 default:
2339 netid = "u_dgr";
2340 break;
2341 }
2342 return netid;
2343}
2344
d1f28cf1 2345static void unix_list_print(struct unixstat *list, struct filter *f)
aba5acdf
SH		 2346{
2347 struct unixstat *s;
2348 char *peer;
2349
2350 for (s = list; s; s = s->next) {
2351 if (!(f->states & (1<<s->state)))
2352 continue;
2353 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
2354 continue;
2355 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
2356 continue;
30b669d7
MY		 2357 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
2358 continue;
aba5acdf
SH		 2359
2360 peer = "*";
2361 if (s->peer) {
2362 struct unixstat *p;
2363 for (p = list; p; p = p->next) {
2364 if (s->peer == p->ino)
2365 break;
2366 }
2367 if (!p) {
2368 peer = "?";
2369 } else {
2370 peer = p->name ? : "*";
2371 }
2372 }
2373
2374 if (f->f) {
2375 struct tcpstat tst;
2376 tst.local.family = AF_UNIX;
2377 tst.remote.family = AF_UNIX;
2378 memcpy(tst.local.data, &s->name, sizeof(s->name));
2379 if (strcmp(peer, "*") == 0)
2380 memset(tst.remote.data, 0, sizeof(peer));
2381 else
ae665a52 2382 memcpy(tst.remote.data, &peer, sizeof(peer));
aba5acdf
SH		 2383 if (run_ssfilter(f->f, &tst) == 0)
2384 continue;
2385 }
2386
2387 if (netid_width)
ae665a52 2388 printf("%-*s ", netid_width,
30b669d7 2389 unix_netid_name(s->type));
aba5acdf
SH		 2390 if (state_width)
2391 printf("%-*s ", state_width, sstate_name[s->state]);
2392 printf("%-6d %-6d ", s->rq, s->wq);
2393 printf("%*s %-*d %*s %-*d",
2394 addr_width, s->name ? : "*", serv_width, s->ino,
2395 addr_width, peer, serv_width, s->peer);
116ac927
RH		 2396 char *buf = NULL;
2397
2398 if (show_proc_ctx || show_sock_ctx) {
2399 if (find_entry(s->ino, &buf,
2400 (show_proc_ctx & show_sock_ctx) ?
2401 PROC_SOCK_CTX : PROC_CTX) > 0) {
2402 printf(" users:(%s)", buf);
2403 free(buf);
2404 }
2405 } else if (show_users) {
2406 if (find_entry(s->ino, &buf, USERS) > 0) {
2407 printf(" users:(%s)", buf);
2408 free(buf);
2409 }
aba5acdf
SH		 2410 }
2411 printf("\n");
2412 }
2413}
2414
dfbaa90d
PE		 2415static int unix_show_sock(struct nlmsghdr *nlh, struct filter *f)
2416{
2417 struct unix_diag_msg *r = NLMSG_DATA(nlh);
2418 struct rtattr *tb[UNIX_DIAG_MAX+1];
2419 char name[128];
2420 int peer_ino;
defd61ca 2421 __u32 rqlen, wqlen;
dfbaa90d
PE		 2422
2423 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr*)(r+1),
2424 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2425
0d2e01c5
MY		 2426 if (r->udiag_type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
2427 return 0;
2428 if (r->udiag_type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
2429 return 0;
2430 if (r->udiag_type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
2431 return 0;
2432
dfbaa90d
PE		 2433 if (netid_width)
2434 printf("%-*s ", netid_width,
30b669d7 2435 unix_netid_name(r->udiag_type));
dfbaa90d
PE		 2436 if (state_width)
2437 printf("%-*s ", state_width, sstate_name[r->udiag_state]);
2438
defd61ca
HFS		 2439 if (tb[UNIX_DIAG_RQLEN]) {
2440 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
2441 rqlen = rql->udiag_rqueue;
2442 wqlen = rql->udiag_wqueue;
2443 } else {
dfbaa90d 2444 rqlen = 0;
defd61ca
HFS		 2445 wqlen = 0;
2446 }
dfbaa90d 2447
defd61ca 2448 printf("%-6u %-6u ", rqlen, wqlen);
dfbaa90d
PE		 2449
2450 if (tb[UNIX_DIAG_NAME]) {
2451 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
2452
2453 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
2454 name[len] = '\0';
2455 if (name[0] == '\0')
2456 name[0] = '@';
2457 } else
2458 sprintf(name, "*");
2459
2460 if (tb[UNIX_DIAG_PEER])
5048f9a0 2461 peer_ino = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
dfbaa90d
PE		 2462 else
2463 peer_ino = 0;
2464
2465 printf("%*s %-*d %*s %-*d",
2466 addr_width, name,
2467 serv_width, r->udiag_ino,
2468 addr_width, "*", /* FIXME */
2469 serv_width, peer_ino);
2470
116ac927
RH		 2471 char *buf = NULL;
2472
2473 if (show_proc_ctx || show_sock_ctx) {
2474 if (find_entry(r->udiag_ino, &buf,
2475 (show_proc_ctx & show_sock_ctx) ?
2476 PROC_SOCK_CTX : PROC_CTX) > 0) {
2477 printf(" users:(%s)", buf);
2478 free(buf);
2479 }
2480 } else if (show_users) {
2481 if (find_entry(r->udiag_ino, &buf, USERS) > 0) {
2482 printf(" users:(%s)", buf);
2483 free(buf);
2484 }
dfbaa90d
PE		 2485 }
2486
51ff9f24
HFS		 2487 if (show_mem) {
2488 printf("\n\t");
2489 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
2490 }
2491
5b816047
PE		 2492 if (show_details) {
2493 if (tb[UNIX_DIAG_SHUTDOWN]) {
2494 unsigned char mask;
2495 mask = *(__u8 *)RTA_DATA(tb[UNIX_DIAG_SHUTDOWN]);
2496 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2497 }
2498 }
2499
dfbaa90d
PE		 2500 printf("\n");
2501
2502 return 0;
2503}
2504
d8402b96
AV		 2505static int handle_netlink_request(struct filter *f, FILE *dump_fp,
2506 struct nlmsghdr *req, size_t size,
2507 int (* show_one_sock)(struct nlmsghdr *nlh, struct filter *f))
dfbaa90d
PE		 2508{
2509 int fd;
e557212e 2510 char buf[16384];
dfbaa90d
PE		 2511
2512 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
2513 return -1;
2514
d8402b96 2515 if (send(fd, req, size, 0) < 0) {
a3fd8e58 2516 close(fd);
dfbaa90d 2517 return -1;
a3fd8e58 2518 }
dfbaa90d 2519
dfbaa90d 2520 while (1) {
2728f598 2521 ssize_t status;
dfbaa90d 2522 struct nlmsghdr *h;
2728f598
SH		 2523 struct sockaddr_nl nladdr;
2524 socklen_t slen = sizeof(nladdr);
dfbaa90d 2525
2728f598
SH		 2526 status = recvfrom(fd, buf, sizeof(buf), 0,
2527 (struct sockaddr *) &nladdr, &slen);
dfbaa90d
PE		 2528 if (status < 0) {
2529 if (errno == EINTR)
2530 continue;
2531 perror("OVERRUN");
2532 continue;
2533 }
2534 if (status == 0) {
2535 fprintf(stderr, "EOF on netlink\n");
2728f598 2536 goto close_it;
dfbaa90d
PE		 2537 }
2538
2539 if (dump_fp)
2540 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
2541
2542 h = (struct nlmsghdr*)buf;
2543 while (NLMSG_OK(h, status)) {
2544 int err;
2545
2546 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
2547 h->nlmsg_seq != 123456)
2548 goto skip_it;
2549
2728f598
SH		 2550 if (h->nlmsg_type == NLMSG_DONE)
2551 goto close_it;
2552
dfbaa90d
PE		 2553 if (h->nlmsg_type == NLMSG_ERROR) {
2554 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
2555 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2556 fprintf(stderr, "ERROR truncated\n");
2557 } else {
2558 errno = -err->error;
a3fd8e58 2559 if (errno != ENOENT)
d8402b96 2560 fprintf(stderr, "DIAG answers %d\n", errno);
dfbaa90d 2561 }
a3fd8e58
ED		 2562 close(fd);
2563 return -1;
dfbaa90d
PE		 2564 }
2565 if (!dump_fp) {
d8402b96 2566 err = show_one_sock(h, f);
a3fd8e58
ED		 2567 if (err < 0) {
2568 close(fd);
dfbaa90d 2569 return err;
a3fd8e58 2570 }
dfbaa90d
PE		 2571 }
2572
2573skip_it:
2574 h = NLMSG_NEXT(h, status);
2575 }
2728f598 2576
dfbaa90d 2577 if (status) {
2728f598 2578 fprintf(stderr, "!!!Remnant of size %zd\n", status);
dfbaa90d
PE		 2579 exit(1);
2580 }
2581 }
2728f598
SH		 2582
2583close_it:
a3fd8e58 2584 close(fd);
dfbaa90d
PE		 2585 return 0;
2586}
2587
d8402b96
AV		 2588static int unix_show_netlink(struct filter *f, FILE *dump_fp)
2589{
5fb421d4 2590 DIAG_REQUEST(req, struct unix_diag_req r);
d8402b96
AV		 2591
2592 req.r.sdiag_family = AF_UNIX;
2593 req.r.udiag_states = f->states;
2594 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
2595 if (show_mem)
2596 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
2597
2598 return handle_netlink_request(f, dump_fp, &req.nlh,
2599 sizeof(req), unix_show_sock);
2600}
2601
d1f28cf1 2602static int unix_show(struct filter *f)
aba5acdf
SH		 2603{
2604 FILE *fp;
2605 char buf[256];
2606 char name[128];
2607 int newformat = 0;
2608 int cnt;
2609 struct unixstat *list = NULL;
2610
dfbaa90d
PE		 2611 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
2612 && unix_show_netlink(f, NULL) == 0)
2613 return 0;
2614
ab01dbbb 2615 if ((fp = net_unix_open()) == NULL)
aba5acdf
SH		 2616 return -1;
2617 fgets(buf, sizeof(buf)-1, fp);
2618
ae665a52 2619 if (memcmp(buf, "Peer", 4) == 0)
aba5acdf
SH		 2620 newformat = 1;
2621 cnt = 0;
2622
2623 while (fgets(buf, sizeof(buf)-1, fp)) {
2624 struct unixstat *u, **insp;
2625 int flags;
2626
2627 if (!(u = malloc(sizeof(*u))))
2628 break;
2629 u->name = NULL;
2630
2631 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
2632 &u->peer, &u->rq, &u->wq, &flags, &u->type,
2633 &u->state, &u->ino, name) < 8)
2634 name[0] = 0;
2635
2636 if (flags&(1<<16)) {
2637 u->state = SS_LISTEN;
2638 } else {
2639 u->state = unix_state_map[u->state-1];
2640 if (u->type == SOCK_DGRAM &&
2641 u->state == SS_CLOSE &&
2642 u->peer)
2643 u->state = SS_ESTABLISHED;
2644 }
2645
2646 if (!newformat) {
2647 u->peer = 0;
2648 u->rq = 0;
2649 u->wq = 0;
2650 }
2651
2652 insp = &list;
2653 while (*insp) {
2654 if (u->type < (*insp)->type ||
2655 (u->type == (*insp)->type &&
2656 u->ino < (*insp)->ino))
2657 break;
2658 insp = &(*insp)->next;
2659 }
2660 u->next = *insp;
2661 *insp = u;
2662
2663 if (name[0]) {
2664 if ((u->name = malloc(strlen(name)+1)) == NULL)
2665 break;
2666 strcpy(u->name, name);
2667 }
2668 if (++cnt > MAX_UNIX_REMEMBER) {
2669 unix_list_print(list, f);
2670 unix_list_free(list);
2671 list = NULL;
2672 cnt = 0;
2673 }
2674 }
a3fd8e58 2675 fclose(fp);
aba5acdf
SH		 2676 if (list) {
2677 unix_list_print(list, f);
2678 unix_list_free(list);
2679 list = NULL;
2680 cnt = 0;
2681 }
2682
2683 return 0;
2684}
2685
372c30d2
ND		 2686static int packet_show_sock(struct nlmsghdr *nlh, struct filter *f)
2687{
2688 struct packet_diag_msg *r = NLMSG_DATA(nlh);
2689 struct rtattr *tb[PACKET_DIAG_MAX+1];
2690 __u32 rq;
2691
2692 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr*)(r+1),
2693 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2694
2695 /* use /proc/net/packet if all info are not available */
2696 if (!tb[PACKET_DIAG_MEMINFO])
2697 return -1;
2698
2699 if (netid_width)
2700 printf("%-*s ", netid_width,
2701 r->pdiag_type == SOCK_RAW ? "p_raw" : "p_dgr");
2702 if (state_width)
2703 printf("%-*s ", state_width, "UNCONN");
2704
2705 if (tb[PACKET_DIAG_MEMINFO]) {
2706 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
2707
2708 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
2709 } else
2710 rq = 0;
2711 printf("%-6d %-6d ", rq, 0);
2712
2713 if (r->pdiag_num == 3) {
2714 printf("%*s:", addr_width, "*");
2715 } else {
2716 char tb2[16];
2717 printf("%*s:", addr_width,
2718 ll_proto_n2a(htons(r->pdiag_num), tb2, sizeof(tb2)));
2719 }
2720 if (tb[PACKET_DIAG_INFO]) {
2721 struct packet_diag_info *pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
2722
2723 if (pinfo->pdi_index == 0)
2724 printf("%-*s ", serv_width, "*");
2725 else
2726 printf("%-*s ", serv_width, xll_index_to_name(pinfo->pdi_index));
2727 } else
2728 printf("%-*s ", serv_width, "*");
2729
2730 printf("%*s*%-*s",
2731 addr_width, "", serv_width, "");
2732
116ac927
RH		 2733 char *buf = NULL;
2734
2735 if (show_proc_ctx || show_sock_ctx) {
2736 if (find_entry(r->pdiag_ino, &buf,
2737 (show_proc_ctx & show_sock_ctx) ?
2738 PROC_SOCK_CTX : PROC_CTX) > 0) {
2739 printf(" users:(%s)", buf);
2740 free(buf);
2741 }
2742 } else if (show_users) {
2743 if (find_entry(r->pdiag_ino, &buf, USERS) > 0) {
2744 printf(" users:(%s)", buf);
2745 free(buf);
2746 }
372c30d2 2747 }
116ac927 2748
372c30d2
ND		 2749 if (show_details) {
2750 __u32 uid = 0;
2751
2752 if (tb[PACKET_DIAG_UID])
2753 uid = *(__u32 *)RTA_DATA(tb[PACKET_DIAG_UID]);
2754
2755 printf(" ino=%u uid=%u sk=", r->pdiag_ino, uid);
2756 if (r->pdiag_cookie[1] != 0)
2757 printf("%08x", r->pdiag_cookie[1]);
2758 printf("%08x", r->pdiag_cookie[0]);
2759 }
2760
2761 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
2762 struct sock_filter *fil =
2763 RTA_DATA(tb[PACKET_DIAG_FILTER]);
2764 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
2765 sizeof(struct sock_filter);
2766
2767 printf("\n\tbpf filter (%d): ", num);
2768 while (num) {
2769 printf(" 0x%02x %u %u %u,",
2770 fil->code, fil->jt, fil->jf, fil->k);
2771 num--;
2772 fil++;
2773 }
2774 }
2775 printf("\n");
2776 return 0;
2777}
2778
2779static int packet_show_netlink(struct filter *f, FILE *dump_fp)
2780{
5fb421d4 2781 DIAG_REQUEST(req, struct packet_diag_req r);
372c30d2 2782
372c30d2
ND		 2783 req.r.sdiag_family = AF_PACKET;
2784 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO | PACKET_SHOW_FILTER;
2785
3b28be6e 2786 return handle_netlink_request(f, dump_fp, &req.nlh, sizeof(req),
2787 packet_show_sock);
372c30d2
ND		 2788}
2789
aba5acdf 2790
d1f28cf1 2791static int packet_show(struct filter *f)
aba5acdf
SH		 2792{
2793 FILE *fp;
2794 char buf[256];
2795 int type;
2796 int prot;
2797 int iface;
2798 int state;
2799 int rq;
2800 int uid;
2801 int ino;
2802 unsigned long long sk;
2803
372c30d2
ND		 2804 if (packet_show_netlink(f, NULL) == 0)
2805 return 0;
2806
ab01dbbb 2807 if ((fp = net_packet_open()) == NULL)
aba5acdf
SH		 2808 return -1;
2809 fgets(buf, sizeof(buf)-1, fp);
2810
2811 while (fgets(buf, sizeof(buf)-1, fp)) {
2812 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2813 &sk,
2814 &type, &prot, &iface, &state,
2815 &rq, &uid, &ino);
2816
2817 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2818 continue;
2819 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2820 continue;
2821 if (f->f) {
2822 struct tcpstat tst;
2823 tst.local.family = AF_PACKET;
2824 tst.remote.family = AF_PACKET;
2825 tst.rport = 0;
2826 tst.lport = iface;
2827 tst.local.data[0] = prot;
2828 tst.remote.data[0] = 0;
2829 if (run_ssfilter(f->f, &tst) == 0)
2830 continue;
2831 }
2832
2833 if (netid_width)
ae665a52 2834 printf("%-*s ", netid_width,
aba5acdf
SH		 2835 type == SOCK_RAW ? "p_raw" : "p_dgr");
2836 if (state_width)
2837 printf("%-*s ", state_width, "UNCONN");
2838 printf("%-6d %-6d ", rq, 0);
2839 if (prot == 3) {
2840 printf("%*s:", addr_width, "*");
2841 } else {
2842 char tb[16];
ae665a52 2843 printf("%*s:", addr_width,
aba5acdf
SH		 2844 ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2845 }
2846 if (iface == 0) {
2847 printf("%-*s ", serv_width, "*");
2848 } else {
2849 printf("%-*s ", serv_width, xll_index_to_name(iface));
2850 }
2851 printf("%*s*%-*s",
2852 addr_width, "", serv_width, "");
2853
116ac927
RH		 2854 char *buf = NULL;
2855
2856 if (show_proc_ctx || show_sock_ctx) {
2857 if (find_entry(ino, &buf,
2858 (show_proc_ctx & show_sock_ctx) ?
2859 PROC_SOCK_CTX : PROC_CTX) > 0) {
2860 printf(" users:(%s)", buf);
2861 free(buf);
2862 }
2863 } else if (show_users) {
2864 if (find_entry(ino, &buf, USERS) > 0) {
2865 printf(" users:(%s)", buf);
2866 free(buf);
2867 }
aba5acdf 2868 }
116ac927 2869
aba5acdf
SH		 2870 if (show_details) {
2871 printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2872 }
2873 printf("\n");
2874 }
2875
2876 return 0;
2877}
2878
129709ae
AV		 2879static void netlink_show_one(struct filter *f,
2880 int prot, int pid, unsigned groups,
f271fe01 2881 int state, int dst_pid, unsigned dst_group,
129709ae
AV		 2882 int rq, int wq,
2883 unsigned long long sk, unsigned long long cb)
2884{
eef43b50 2885 SPRINT_BUF(prot_name);
2886
129709ae
AV		 2887 if (f->f) {
2888 struct tcpstat tst;
2889 tst.local.family = AF_NETLINK;
2890 tst.remote.family = AF_NETLINK;
2891 tst.rport = -1;
2892 tst.lport = pid;
2893 tst.local.data[0] = prot;
2894 tst.remote.data[0] = 0;
2895 if (run_ssfilter(f->f, &tst) == 0)
2896 return;
2897 }
2898
2899 if (netid_width)
2900 printf("%-*s ", netid_width, "nl");
2901 if (state_width)
2902 printf("%-*s ", state_width, "UNCONN");
2903 printf("%-6d %-6d ", rq, wq);
eef43b50 2904
d68e00f7 2905 if (resolve_services) {
eef43b50 2906 printf("%*s:", addr_width, nl_proto_n2a(prot, prot_name,
2907 sizeof(prot_name)));
d68e00f7 2908 } else {
2909 printf("%*d:", addr_width, prot);
eef43b50 2910 }
2911
129709ae
AV		 2912 if (pid == -1) {
2913 printf("%-*s ", serv_width, "*");
2914 } else if (resolve_services) {
2915 int done = 0;
2916 if (!pid) {
2917 done = 1;
2918 printf("%-*s ", serv_width, "kernel");
2919 } else if (pid > 0) {
2920 char procname[64];
2921 FILE *fp;
2922 sprintf(procname, "%s/%d/stat",
2923 getenv("PROC_ROOT") ? : "/proc", pid);
2924 if ((fp = fopen(procname, "r")) != NULL) {
2925 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2926 sprintf(procname+strlen(procname), "/%d", pid);
2927 printf("%-*s ", serv_width, procname);
2928 done = 1;
2929 }
2930 fclose(fp);
2931 }
2932 }
2933 if (!done)
2934 printf("%-*d ", serv_width, pid);
2935 } else {
2936 printf("%-*d ", serv_width, pid);
2937 }
f271fe01
AV		 2938
2939 if (state == NETLINK_CONNECTED) {
2940 printf("%*d:%-*d",
d68e00f7 2941 addr_width, dst_group, serv_width, dst_pid);
f271fe01
AV		 2942 } else {
2943 printf("%*s*%-*s",
d68e00f7 2944 addr_width, "", serv_width, "");
f271fe01 2945 }
129709ae 2946
116ac927
RH		 2947 char *pid_context = NULL;
2948 if (show_proc_ctx) {
2949 /* The pid value will either be:
2950 * 0 if destination kernel - show kernel initial context.
2951 * A valid process pid - use getpidcon.
2952 * A unique value allocated by the kernel or netlink user
2953 * to the process - show context as "not available".
2954 */
2955 if (!pid)
2956 security_get_initial_context("kernel", &pid_context);
2957 else if (pid > 0)
2958 getpidcon(pid, &pid_context);
2959
2960 if (pid_context != NULL) {
2961 printf("proc_ctx=%-*s ", serv_width, pid_context);
2962 free(pid_context);
2963 } else {
2964 printf("proc_ctx=%-*s ", serv_width, "unavailable");
2965 }
2966 }
2967
129709ae
AV		 2968 if (show_details) {
2969 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
2970 }
2971 printf("\n");
2972
2973 return;
2974}
2975
ecb928c8
AV		 2976static int netlink_show_sock(struct nlmsghdr *nlh, struct filter *f)
2977{
2978 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
2979 struct rtattr *tb[NETLINK_DIAG_MAX+1];
2980 int rq = 0, wq = 0;
2981 unsigned long groups = 0;
2982
2983 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr*)(r+1),
2984 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2985
2986 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
2987 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
2988
2989 if (tb[NETLINK_DIAG_MEMINFO]) {
2990 const __u32 *skmeminfo;
2991 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
2992
2993 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
2994 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
2995 }
2996
2997 netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
2998 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
2999 rq, wq, 0, 0);
3000
3001 if (show_mem) {
3002 printf("\t");
3003 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
3004 printf("\n");
3005 }
3006
3007 return 0;
3008}
3009
3010static int netlink_show_netlink(struct filter *f, FILE *dump_fp)
3011{
5fb421d4 3012 DIAG_REQUEST(req, struct netlink_diag_req r);
ecb928c8
AV		 3013
3014 req.r.sdiag_family = AF_NETLINK;
3015 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
3016 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
3017
3018 return handle_netlink_request(f, dump_fp, &req.nlh,
3019 sizeof(req), netlink_show_sock);
3020}
3021
d1f28cf1 3022static int netlink_show(struct filter *f)
aba5acdf
SH		 3023{
3024 FILE *fp;
3025 char buf[256];
3026 int prot, pid;
3027 unsigned groups;
3028 int rq, wq, rc;
3029 unsigned long long sk, cb;
3030
129709ae
AV		 3031 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
3032 netlink_show_netlink(f, NULL) == 0)
3033 return 0;
3034
ab01dbbb 3035 if ((fp = net_netlink_open()) == NULL)
aba5acdf
SH		 3036 return -1;
3037 fgets(buf, sizeof(buf)-1, fp);
3038
3039 while (fgets(buf, sizeof(buf)-1, fp)) {
3040 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
3041 &sk,
3042 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
3043
f271fe01 3044 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
aba5acdf
SH		 3045 }
3046
3047 return 0;
3048}
3049
3050struct snmpstat
3051{
3052 int tcp_estab;
3053};
3054
d1f28cf1 3055static int get_snmp_int(char *proto, char *key, int *result)
aba5acdf
SH		 3056{
3057 char buf[1024];
3058 FILE *fp;
3059 int protolen = strlen(proto);
3060 int keylen = strlen(key);
3061
3062 *result = 0;
3063
ab01dbbb 3064 if ((fp = net_snmp_open()) == NULL)
aba5acdf
SH		 3065 return -1;
3066
3067 while (fgets(buf, sizeof(buf), fp) != NULL) {
3068 char *p = buf;
3069 int pos = 0;
3070 if (memcmp(buf, proto, protolen))
3071 continue;
3072 while ((p = strchr(p, ' ')) != NULL) {
3073 pos++;
3074 p++;
3075 if (memcmp(p, key, keylen) == 0 &&
3076 (p[keylen] == ' ' || p[keylen] == '\n'))
3077 break;
3078 }
3079 if (fgets(buf, sizeof(buf), fp) == NULL)
3080 break;
3081 if (memcmp(buf, proto, protolen))
3082 break;
3083 p = buf;
3084 while ((p = strchr(p, ' ')) != NULL) {
3085 p++;
3086 if (--pos == 0) {
3087 sscanf(p, "%d", result);
3088 fclose(fp);
3089 return 0;
3090 }
3091 }
3092 }
3093
3094 fclose(fp);
3095 errno = ESRCH;
3096 return -1;
3097}
3098
3099
3100/* Get stats from sockstat */
3101
3102struct sockstat
3103{
3104 int socks;
3105 int tcp_mem;
3106 int tcp_total;
3107 int tcp_orphans;
3108 int tcp_tws;
3109 int tcp4_hashed;
3110 int udp4;
3111 int raw4;
3112 int frag4;
3113 int frag4_mem;
3114 int tcp6_hashed;
3115 int udp6;
3116 int raw6;
3117 int frag6;
3118 int frag6_mem;
3119};
3120
3121static void get_sockstat_line(char *line, struct sockstat *s)
3122{
3123 char id[256], rem[256];
3124
3125 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
3126 return;
3127
3128 if (strcmp(id, "sockets:") == 0)
3129 sscanf(rem, "%*s%d", &s->socks);
3130 else if (strcmp(id, "UDP:") == 0)
3131 sscanf(rem, "%*s%d", &s->udp4);
3132 else if (strcmp(id, "UDP6:") == 0)
3133 sscanf(rem, "%*s%d", &s->udp6);
3134 else if (strcmp(id, "RAW:") == 0)
3135 sscanf(rem, "%*s%d", &s->raw4);
3136 else if (strcmp(id, "RAW6:") == 0)
3137 sscanf(rem, "%*s%d", &s->raw6);
3138 else if (strcmp(id, "TCP6:") == 0)
3139 sscanf(rem, "%*s%d", &s->tcp6_hashed);
3140 else if (strcmp(id, "FRAG:") == 0)
3141 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
3142 else if (strcmp(id, "FRAG6:") == 0)
3143 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
3144 else if (strcmp(id, "TCP:") == 0)
3145 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
3146 &s->tcp4_hashed,
3147 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
3148}
3149
d1f28cf1 3150static int get_sockstat(struct sockstat *s)
aba5acdf
SH		 3151{
3152 char buf[256];
3153 FILE *fp;
3154
3155 memset(s, 0, sizeof(*s));
3156
ab01dbbb 3157 if ((fp = net_sockstat_open()) == NULL)
aba5acdf
SH		 3158 return -1;
3159 while(fgets(buf, sizeof(buf), fp) != NULL)
3160 get_sockstat_line(buf, s);
3161 fclose(fp);
3162
ab01dbbb 3163 if ((fp = net_sockstat6_open()) == NULL)
aba5acdf
SH		 3164 return 0;
3165 while(fgets(buf, sizeof(buf), fp) != NULL)
3166 get_sockstat_line(buf, s);
3167 fclose(fp);
3168
3169 return 0;
3170}
3171
d1f28cf1 3172static int print_summary(void)
aba5acdf
SH		 3173{
3174 struct sockstat s;
3175 struct snmpstat sn;
3176
3177 if (get_sockstat(&s) < 0)
3178 perror("ss: get_sockstat");
3179 if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
3180 perror("ss: get_snmpstat");
3181
3182 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
3183
3184 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
3185 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
3186 sn.tcp_estab,
3187 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
3188 s.tcp_orphans,
3189 slabstat.tcp_syns,
3190 s.tcp_tws, slabstat.tcp_tws,
3191 slabstat.tcp_ports
3192 );
3193
3194 printf("\n");
3195 printf("Transport Total IP IPv6\n");
3196 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
3197 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
3198 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
3199 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
ae665a52 3200 printf("INET %-9d %-9d %-9d\n",
aba5acdf
SH		 3201 s.raw4+s.udp4+s.tcp4_hashed+
3202 s.raw6+s.udp6+s.tcp6_hashed,
3203 s.raw4+s.udp4+s.tcp4_hashed,
3204 s.raw6+s.udp6+s.tcp6_hashed);
3205 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
3206
3207 printf("\n");
3208
3209 return 0;
3210}
3211
7a96e199 3212static void _usage(FILE *dest)
aba5acdf 3213{
7a96e199 3214 fprintf(dest,
aba5acdf
SH		 3215"Usage: ss [ OPTIONS ]\n"
3216" ss [ OPTIONS ] [ FILTER ]\n"
ab61159a
SH		 3217" -h, --help this message\n"
3218" -V, --version output version information\n"
3219" -n, --numeric don't resolve service names\n"
3220" -r, --resolve resolve host names\n"
3221" -a, --all display all sockets\n"
3222" -l, --listening display listening sockets\n"
3223" -o, --options show timer information\n"
3224" -e, --extended show detailed socket information\n"
3225" -m, --memory show socket memory usage\n"
3226" -p, --processes show process using socket\n"
3227" -i, --info show internal TCP information\n"
3228" -s, --summary show socket usage summary\n"
b0f01cf6 3229" -b, --bpf show bpf filter socket information\n"
116ac927
RH		 3230" -Z, --context display process SELinux security contexts\n"
3231" -z, --contexts display process and socket SELinux security contexts\n"
ab61159a
SH		 3232"\n"
3233" -4, --ipv4 display only IP version 4 sockets\n"
3234" -6, --ipv6 display only IP version 6 sockets\n"
3235" -0, --packet display PACKET sockets\n"
3236" -t, --tcp display only TCP sockets\n"
3237" -u, --udp display only UDP sockets\n"
351efcde 3238" -d, --dccp display only DCCP sockets\n"
ab61159a
SH		 3239" -w, --raw display only RAW sockets\n"
3240" -x, --unix display only Unix domain sockets\n"
3241" -f, --family=FAMILY display sockets of type FAMILY\n"
3242"\n"
583de149 3243" -A, --query=QUERY, --socket=QUERY\n"
56dee73e 3244" QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
ab61159a 3245"\n"
583de149 3246" -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
ab61159a 3247" -F, --filter=FILE read filter information from FILE\n"
aba5acdf 3248" FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
ab61159a 3249 );
7a96e199
AH		 3250}
3251
3252static void help(void) __attribute__((noreturn));
3253static void help(void)
3254{
3255 _usage(stdout);
3256 exit(0);
3257}
3258
3259static void usage(void) __attribute__((noreturn));
3260static void usage(void)
3261{
3262 _usage(stderr);
aba5acdf
SH		 3263 exit(-1);
3264}
3265
3266
d1f28cf1 3267static int scan_state(const char *state)
aba5acdf
SH		 3268{
3269 int i;
3270 if (strcasecmp(state, "close") == 0 ||
3271 strcasecmp(state, "closed") == 0)
3272 return (1<<SS_CLOSE);
3273 if (strcasecmp(state, "syn-rcv") == 0)
3274 return (1<<SS_SYN_RECV);
1a5bad5a 3275 if (strcasecmp(state, "established") == 0)
aba5acdf
SH		 3276 return (1<<SS_ESTABLISHED);
3277 if (strcasecmp(state, "all") == 0)
3278 return SS_ALL;
3279 if (strcasecmp(state, "connected") == 0)
3280 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
1a5bad5a 3281 if (strcasecmp(state, "synchronized") == 0)
aba5acdf
SH		 3282 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
3283 if (strcasecmp(state, "bucket") == 0)
3284 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
3285 if (strcasecmp(state, "big") == 0)
3286 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
3287 for (i=0; i<SS_MAX; i++) {
1a5bad5a 3288 if (strcasecmp(state, sstate_namel[i]) == 0)
aba5acdf
SH		 3289 return (1<<i);
3290 }
3291 return 0;
3292}
3293
ab61159a
SH		 3294static const struct option long_opts[] = {
3295 { "numeric", 0, 0, 'n' },
3296 { "resolve", 0, 0, 'r' },
3297 { "options", 0, 0, 'o' },
3298 { "extended", 0, 0, 'e' },
3299 { "memory", 0, 0, 'm' },
3300 { "info", 0, 0, 'i' },
3301 { "processes", 0, 0, 'p' },
372c30d2 3302 { "bpf", 0, 0, 'b' },
351efcde 3303 { "dccp", 0, 0, 'd' },
ab61159a
SH		 3304 { "tcp", 0, 0, 't' },
3305 { "udp", 0, 0, 'u' },
3306 { "raw", 0, 0, 'w' },
3307 { "unix", 0, 0, 'x' },
3308 { "all", 0, 0, 'a' },
3309 { "listening", 0, 0, 'l' },
3310 { "ipv4", 0, 0, '4' },
3311 { "ipv6", 0, 0, '6' },
3312 { "packet", 0, 0, '0' },
3313 { "family", 1, 0, 'f' },
3314 { "socket", 1, 0, 'A' },
583de149 3315 { "query", 1, 0, 'A' },
c3f346b0 3316 { "summary", 0, 0, 's' },
583de149 3317 { "diag", 1, 0, 'D' },
ab61159a
SH		 3318 { "filter", 1, 0, 'F' },
3319 { "version", 0, 0, 'V' },
3320 { "help", 0, 0, 'h' },
116ac927
RH		 3321 { "context", 0, 0, 'Z' },
3322 { "contexts", 0, 0, 'z' },
ab61159a 3323 { 0 }
ae665a52 3324
ab61159a
SH		 3325};
3326
aba5acdf
SH		 3327int main(int argc, char *argv[])
3328{
3329 int do_default = 1;
3330 int saw_states = 0;
3331 int saw_query = 0;
3332 int do_summary = 0;
7d105b56 3333 const char *dump_tcpdiag = NULL;
aba5acdf
SH		 3334 FILE *filter_fp = NULL;
3335 int ch;
3336
3337 memset(&current_filter, 0, sizeof(current_filter));
3338
3339 current_filter.states = default_filter.states;
3340
116ac927 3341 while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spbf:miA:D:F:vVzZ",
ab61159a 3342 long_opts, NULL)) != EOF) {
aba5acdf
SH		 3343 switch(ch) {
3344 case 'n':
3345 resolve_services = 0;
3346 break;
3347 case 'r':
3348 resolve_hosts = 1;
3349 break;
3350 case 'o':
3351 show_options = 1;
3352 break;
3353 case 'e':
3354 show_options = 1;
3355 show_details++;
3356 break;
3357 case 'm':
3358 show_mem = 1;
3359 break;
3360 case 'i':
3361 show_tcpinfo = 1;
3362 break;
3363 case 'p':
3364 show_users++;
fbc0f876 3365 user_ent_hash_build();
aba5acdf 3366 break;
372c30d2
ND		 3367 case 'b':
3368 show_options = 1;
3369 show_bpf++;
3370 break;
351efcde
SH		 3371 case 'd':
3372 current_filter.dbs |= (1<<DCCP_DB);
3373 do_default = 0;
3374 break;
aba5acdf
SH		 3375 case 't':
3376 current_filter.dbs |= (1<<TCP_DB);
3377 do_default = 0;
3378 break;
3379 case 'u':
3380 current_filter.dbs |= (1<<UDP_DB);
3381 do_default = 0;
3382 break;
3383 case 'w':
3384 current_filter.dbs |= (1<<RAW_DB);
3385 do_default = 0;
3386 break;
3387 case 'x':
3388 current_filter.dbs |= UNIX_DBM;
3389 do_default = 0;
3390 break;
3391 case 'a':
3392 current_filter.states = SS_ALL;
3393 break;
3394 case 'l':
16963ce6 3395 current_filter.states = (1<<SS_LISTEN) | (1<<SS_CLOSE);
aba5acdf
SH		 3396 break;
3397 case '4':
3398 preferred_family = AF_INET;
3399 break;
3400 case '6':
3401 preferred_family = AF_INET6;
3402 break;
3403 case '0':
3404 preferred_family = AF_PACKET;
3405 break;
3406 case 'f':
3407 if (strcmp(optarg, "inet") == 0)
3408 preferred_family = AF_INET;
3409 else if (strcmp(optarg, "inet6") == 0)
3410 preferred_family = AF_INET6;
3411 else if (strcmp(optarg, "link") == 0)
3412 preferred_family = AF_PACKET;
3413 else if (strcmp(optarg, "unix") == 0)
3414 preferred_family = AF_UNIX;
3415 else if (strcmp(optarg, "netlink") == 0)
3416 preferred_family = AF_NETLINK;
3417 else if (strcmp(optarg, "help") == 0)
7a96e199 3418 help();
aba5acdf
SH		 3419 else {
3420 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
3421 usage();
3422 }
3423 break;
3424 case 'A':
3425 {
3426 char *p, *p1;
3427 if (!saw_query) {
3428 current_filter.dbs = 0;
3429 saw_query = 1;
3430 do_default = 0;
3431 }
3432 p = p1 = optarg;
3433 do {
3434 if ((p1 = strchr(p, ',')) != NULL)
ae665a52 3435 *p1 = 0;
aba5acdf
SH		 3436 if (strcmp(p, "all") == 0) {
3437 current_filter.dbs = ALL_DB;
3438 } else if (strcmp(p, "inet") == 0) {
351efcde 3439 current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
aba5acdf
SH		 3440 } else if (strcmp(p, "udp") == 0) {
3441 current_filter.dbs |= (1<<UDP_DB);
351efcde
SH		 3442 } else if (strcmp(p, "dccp") == 0) {
3443 current_filter.dbs |= (1<<DCCP_DB);
aba5acdf
SH		 3444 } else if (strcmp(p, "tcp") == 0) {
3445 current_filter.dbs |= (1<<TCP_DB);
3446 } else if (strcmp(p, "raw") == 0) {
3447 current_filter.dbs |= (1<<RAW_DB);
3448 } else if (strcmp(p, "unix") == 0) {
3449 current_filter.dbs |= UNIX_DBM;
1a5bad5a 3450 } else if (strcasecmp(p, "unix_stream") == 0 ||
aba5acdf
SH		 3451 strcmp(p, "u_str") == 0) {
3452 current_filter.dbs |= (1<<UNIX_ST_DB);
1a5bad5a 3453 } else if (strcasecmp(p, "unix_dgram") == 0 ||
aba5acdf
SH		 3454 strcmp(p, "u_dgr") == 0) {
3455 current_filter.dbs |= (1<<UNIX_DG_DB);
30b669d7
MY		 3456 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
3457 strcmp(p, "u_seq") == 0) {
3458 current_filter.dbs |= (1<<UNIX_SQ_DB);
aba5acdf
SH		 3459 } else if (strcmp(p, "packet") == 0) {
3460 current_filter.dbs |= PACKET_DBM;
3461 } else if (strcmp(p, "packet_raw") == 0 ||
3462 strcmp(p, "p_raw") == 0) {
3463 current_filter.dbs |= (1<<PACKET_R_DB);
3464 } else if (strcmp(p, "packet_dgram") == 0 ||
3465 strcmp(p, "p_dgr") == 0) {
3466 current_filter.dbs |= (1<<PACKET_DG_DB);
3467 } else if (strcmp(p, "netlink") == 0) {
3468 current_filter.dbs |= (1<<NETLINK_DB);
3469 } else {
3470 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
3471 usage();
3472 }
3473 p = p1 + 1;
3474 } while (p1);
3475 break;
3476 }
3477 case 's':
3478 do_summary = 1;
3479 break;
3480 case 'D':
3481 dump_tcpdiag = optarg;
3482 break;
3483 case 'F':
3484 if (filter_fp) {
3485 fprintf(stderr, "More than one filter file\n");
3486 exit(-1);
3487 }
3488 if (optarg[0] == '-')
3489 filter_fp = stdin;
3490 else
3491 filter_fp = fopen(optarg, "r");
3492 if (!filter_fp) {
3493 perror("fopen filter file");
3494 exit(-1);
3495 }
3496 break;
3497 case 'v':
3498 case 'V':
3499 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
3500 exit(0);
116ac927
RH		 3501 case 'z':
3502 show_sock_ctx++;
3503 case 'Z':
3504 if (is_selinux_enabled() <= 0) {
3505 fprintf(stderr, "ss: SELinux is not enabled.\n");
3506 exit(1);
3507 }
3508 show_proc_ctx++;
3509 user_ent_hash_build();
3510 break;
aba5acdf
SH		 3511 case 'h':
3512 case '?':
7a96e199 3513 help();
aba5acdf
SH		 3514 default:
3515 usage();
3516 }
3517 }
3518
3519 argc -= optind;
3520 argv += optind;
3521
3522 get_slabstat(&slabstat);
3523
3524 if (do_summary) {
3525 print_summary();
3526 if (do_default && argc == 0)
3527 exit(0);
3528 }
3529
3530 if (do_default)
3531 current_filter.dbs = default_filter.dbs;
3532
3533 if (preferred_family == AF_UNSPEC) {
3534 if (!(current_filter.dbs&~UNIX_DBM))
3535 preferred_family = AF_UNIX;
3536 else if (!(current_filter.dbs&~PACKET_DBM))
3537 preferred_family = AF_PACKET;
3538 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
3539 preferred_family = AF_NETLINK;
3540 }
3541
3542 if (preferred_family != AF_UNSPEC) {
3543 int mask2;
3544 if (preferred_family == AF_INET ||
3545 preferred_family == AF_INET6) {
f70d96a4 3546 mask2= current_filter.dbs;
aba5acdf
SH		 3547 } else if (preferred_family == AF_PACKET) {
3548 mask2 = PACKET_DBM;
3549 } else if (preferred_family == AF_UNIX) {
3550 mask2 = UNIX_DBM;
3551 } else if (preferred_family == AF_NETLINK) {
3552 mask2 = (1<<NETLINK_DB);
3553 } else {
3554 mask2 = 0;
3555 }
3556
3557 if (do_default)
3558 current_filter.dbs = mask2;
3559 else
3560 current_filter.dbs &= mask2;
3561 current_filter.families = (1<<preferred_family);
3562 } else {
3563 if (!do_default)
3564 current_filter.families = ~0;
3565 else
3566 current_filter.families = default_filter.families;
3567 }
3568 if (current_filter.dbs == 0) {
3569 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
3570 exit(0);
3571 }
3572 if (current_filter.families == 0) {
3573 fprintf(stderr, "ss: no families to show with such filter.\n");
3574 exit(0);
3575 }
3576
3577 if (resolve_services && resolve_hosts &&
351efcde 3578 (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB))))
aba5acdf
SH		 3579 init_service_resolver();
3580
3581 /* Now parse filter... */
3582 if (argc == 0 && filter_fp) {
3583 if (ssfilter_parse(&current_filter.f, 0, NULL, filter_fp))
3584 usage();
3585 }
3586
3587 while (argc > 0) {
3588 if (strcmp(*argv, "state") == 0) {
3589 NEXT_ARG();
3590 if (!saw_states)
3591 current_filter.states = 0;
3592 current_filter.states |= scan_state(*argv);
3593 saw_states = 1;
3594 } else if (strcmp(*argv, "exclude") == 0 ||
3595 strcmp(*argv, "excl") == 0) {
3596 NEXT_ARG();
3597 if (!saw_states)
3598 current_filter.states = SS_ALL;
3599 current_filter.states &= ~scan_state(*argv);
3600 saw_states = 1;
3601 } else {
3602 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
3603 usage();
3604 break;
3605 }
3606 argc--; argv++;
3607 }
3608
3609 if (current_filter.states == 0) {
3610 fprintf(stderr, "ss: no socket states to show with such filter.\n");
3611 exit(0);
3612 }
3613
3614 if (dump_tcpdiag) {
3615 FILE *dump_fp = stdout;
3616 if (!(current_filter.dbs & (1<<TCP_DB))) {
3617 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
3618 exit(0);
3619 }
3620 if (dump_tcpdiag[0] != '-') {
3621 dump_fp = fopen(dump_tcpdiag, "w");
3622 if (!dump_tcpdiag) {
3623 perror("fopen dump file");
3624 exit(-1);
3625 }
3626 }
3fe5b534 3627 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
aba5acdf
SH		 3628 fflush(dump_fp);
3629 exit(0);
3630 }
3631
3632 netid_width = 0;
3633 if (current_filter.dbs&(current_filter.dbs-1))
3634 netid_width = 5;
3635
3636 state_width = 0;
3637 if (current_filter.states&(current_filter.states-1))
3638 state_width = 10;
3639
3640 screen_width = 80;
3641 if (isatty(STDOUT_FILENO)) {
3642 struct winsize w;
3643
3644 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
3645 if (w.ws_col > 0)
3646 screen_width = w.ws_col;
3647 }
3648 }
3649
3650 addrp_width = screen_width;
3651 addrp_width -= netid_width+1;
3652 addrp_width -= state_width+1;
3653 addrp_width -= 14;
3654
3655 if (addrp_width&1) {
3656 if (netid_width)
3657 netid_width++;
3658 else if (state_width)
3659 state_width++;
3660 }
3661
3662 addrp_width /= 2;
3663 addrp_width--;
3664
3665 serv_width = resolve_services ? 7 : 5;
3666
3667 if (addrp_width < 15+serv_width+1)
3668 addrp_width = 15+serv_width+1;
3669
ae665a52 3670 addr_width = addrp_width - serv_width - 1;
aba5acdf
SH		 3671
3672 if (netid_width)
3673 printf("%-*s ", netid_width, "Netid");
3674 if (state_width)
3675 printf("%-*s ", state_width, "State");
3676 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
3677
d68e00f7 3678 /* Make enough space for the local/remote port field */
3679 addr_width -= 13;
3680 serv_width += 13;
2dc85485 3681
aba5acdf
SH		 3682 printf("%*s:%-*s %*s:%-*s\n",
3683 addr_width, "Local Address", serv_width, "Port",
d68e00f7 3684 addr_width, "Peer Address", serv_width, "Port");
aba5acdf 3685
aba5acdf
SH		 3686 fflush(stdout);
3687
3688 if (current_filter.dbs & (1<<NETLINK_DB))
3689 netlink_show(&current_filter);
3690 if (current_filter.dbs & PACKET_DBM)
3691 packet_show(&current_filter);
3692 if (current_filter.dbs & UNIX_DBM)
3693 unix_show(&current_filter);
3694 if (current_filter.dbs & (1<<RAW_DB))
3695 raw_show(&current_filter);
3696 if (current_filter.dbs & (1<<UDP_DB))
3697 udp_show(&current_filter);
3698 if (current_filter.dbs & (1<<TCP_DB))
3fe5b534 3699 tcp_show(&current_filter, IPPROTO_TCP);
351efcde 3700 if (current_filter.dbs & (1<<DCCP_DB))
3fe5b534 3701 tcp_show(&current_filter, IPPROTO_DCCP);
116ac927
RH		 3702
3703 if (show_users || show_proc_ctx || show_sock_ctx)
3704 user_ent_destroy();
3705
aba5acdf
SH		 3706 return 0;
3707}
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