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[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
116ac927
RH		 44#if HAVE_SELINUX
45#include <selinux/selinux.h>
46#else
47/* Stubs for SELinux functions */
48static int is_selinux_enabled(void)
49{
50 return -1;
51}
52
53static int getpidcon(pid_t pid, char **context)
54{
55 *context = NULL;
56 return -1;
57}
58
59static int getfilecon(char *path, char **context)
60{
61 *context = NULL;
62 return -1;
63}
64
65static int security_get_initial_context(char *name, char **context)
66{
67 *context = NULL;
68 return -1;
69}
70#endif
71
aba5acdf
SH		 72int resolve_hosts = 0;
73int resolve_services = 1;
74int preferred_family = AF_UNSPEC;
75int show_options = 0;
76int show_details = 0;
77int show_users = 0;
78int show_mem = 0;
79int show_tcpinfo = 0;
372c30d2 80int show_bpf = 0;
116ac927
RH		 81int show_proc_ctx = 0;
82int show_sock_ctx = 0;
83/* If show_users & show_proc_ctx only do user_ent_hash_build() once */
84int user_ent_hash_build_init = 0;
aba5acdf
SH		 85
86int netid_width;
87int state_width;
88int addrp_width;
89int addr_width;
90int serv_width;
91int screen_width;
92
93static const char *TCP_PROTO = "tcp";
94static const char *UDP_PROTO = "udp";
95static const char *RAW_PROTO = "raw";
96static const char *dg_proto = NULL;
97
98enum
99{
100 TCP_DB,
351efcde 101 DCCP_DB,
aba5acdf
SH		 102 UDP_DB,
103 RAW_DB,
104 UNIX_DG_DB,
105 UNIX_ST_DB,
30b669d7 106 UNIX_SQ_DB,
aba5acdf
SH		 107 PACKET_DG_DB,
108 PACKET_R_DB,
109 NETLINK_DB,
110 MAX_DB
111};
112
113#define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
30b669d7 114#define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
aba5acdf
SH		 115#define ALL_DB ((1<<MAX_DB)-1)
116
117enum {
7d105b56
SH		 118 SS_UNKNOWN,
119 SS_ESTABLISHED,
120 SS_SYN_SENT,
121 SS_SYN_RECV,
122 SS_FIN_WAIT1,
123 SS_FIN_WAIT2,
124 SS_TIME_WAIT,
125 SS_CLOSE,
126 SS_CLOSE_WAIT,
127 SS_LAST_ACK,
128 SS_LISTEN,
129 SS_CLOSING,
130 SS_MAX
aba5acdf
SH		 131};
132
133#define SS_ALL ((1<<SS_MAX)-1)
134
135#include "ssfilter.h"
136
137struct filter
138{
139 int dbs;
140 int states;
141 int families;
142 struct ssfilter *f;
143};
144
145struct filter default_filter = {
7de7e591 146 .dbs = ~0,
e7113c61
SH		 147 .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
148 .families= (1<<AF_INET)|(1<<AF_INET6),
aba5acdf
SH		 149};
150
151struct filter current_filter;
152
ab01dbbb 153static FILE *generic_proc_open(const char *env, const char *name)
aba5acdf 154{
ab01dbbb 155 const char *p = getenv(env);
aba5acdf 156 char store[128];
ab01dbbb 157
aba5acdf
SH		 158 if (!p) {
159 p = getenv("PROC_ROOT") ? : "/proc";
160 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
161 p = store;
162 }
ab01dbbb
SH		 163
164 return fopen(p, "r");
aba5acdf
SH		 165}
166
ab01dbbb 167static FILE *net_tcp_open(void)
aba5acdf
SH		 168{
169 return generic_proc_open("PROC_NET_TCP", "net/tcp");
170}
171
ab01dbbb 172static FILE *net_tcp6_open(void)
aba5acdf
SH		 173{
174 return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
175}
176
ab01dbbb 177static FILE *net_udp_open(void)
aba5acdf
SH		 178{
179 return generic_proc_open("PROC_NET_UDP", "net/udp");
180}
181
ab01dbbb 182static FILE *net_udp6_open(void)
aba5acdf
SH		 183{
184 return generic_proc_open("PROC_NET_UDP6", "net/udp6");
185}
186
ab01dbbb 187static FILE *net_raw_open(void)
aba5acdf
SH		 188{
189 return generic_proc_open("PROC_NET_RAW", "net/raw");
190}
191
ab01dbbb 192static FILE *net_raw6_open(void)
aba5acdf
SH		 193{
194 return generic_proc_open("PROC_NET_RAW6", "net/raw6");
195}
196
ab01dbbb 197static FILE *net_unix_open(void)
aba5acdf
SH		 198{
199 return generic_proc_open("PROC_NET_UNIX", "net/unix");
200}
201
ab01dbbb 202static FILE *net_packet_open(void)
aba5acdf
SH		 203{
204 return generic_proc_open("PROC_NET_PACKET", "net/packet");
205}
206
ab01dbbb 207static FILE *net_netlink_open(void)
aba5acdf
SH		 208{
209 return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
210}
211
ab01dbbb 212static FILE *slabinfo_open(void)
aba5acdf
SH		 213{
214 return generic_proc_open("PROC_SLABINFO", "slabinfo");
215}
216
ab01dbbb 217static FILE *net_sockstat_open(void)
aba5acdf
SH		 218{
219 return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
220}
221
ab01dbbb 222static FILE *net_sockstat6_open(void)
aba5acdf
SH		 223{
224 return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
225}
226
ab01dbbb 227static FILE *net_snmp_open(void)
aba5acdf
SH		 228{
229 return generic_proc_open("PROC_NET_SNMP", "net/snmp");
230}
231
ab01dbbb 232static FILE *ephemeral_ports_open(void)
aba5acdf
SH		 233{
234 return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
235}
236
fbc0f876
SF		 237struct user_ent {
238 struct user_ent *next;
239 unsigned int ino;
240 int pid;
241 int fd;
116ac927
RH		 242 char *process;
243 char *process_ctx;
244 char *socket_ctx;
fbc0f876
SF		 245};
246
247#define USER_ENT_HASH_SIZE 256
248struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
249
250static int user_ent_hashfn(unsigned int ino)
aba5acdf 251{
fbc0f876 252 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
aba5acdf 253
fbc0f876
SF		 254 return val & (USER_ENT_HASH_SIZE - 1);
255}
256
116ac927
RH		 257static void user_ent_add(unsigned int ino, char *process,
258 int pid, int fd,
259 char *proc_ctx,
260 char *sock_ctx)
fbc0f876
SF		 261{
262 struct user_ent *p, **pp;
aba5acdf 263
116ac927
RH		 264 p = malloc(sizeof(struct user_ent));
265 if (!p) {
266 fprintf(stderr, "ss: failed to malloc buffer\n");
fbc0f876 267 abort();
116ac927 268 }
fbc0f876
SF		 269 p->next = NULL;
270 p->ino = ino;
271 p->pid = pid;
272 p->fd = fd;
116ac927
RH		 273 p->process = strdup(process);
274 p->process_ctx = strdup(proc_ctx);
275 p->socket_ctx = strdup(sock_ctx);
fbc0f876
SF		 276
277 pp = &user_ent_hash[user_ent_hashfn(ino)];
278 p->next = *pp;
279 *pp = p;
280}
aba5acdf 281
116ac927
RH		 282static void user_ent_destroy(void)
283{
284 struct user_ent *p, *p_next;
285 int cnt = 0;
286
287 while (cnt != USER_ENT_HASH_SIZE) {
288 p = user_ent_hash[cnt];
289 while (p) {
290 free(p->process);
291 free(p->process_ctx);
292 free(p->socket_ctx);
293 p_next = p->next;
294 free(p);
295 p = p_next;
296 }
297 cnt++;
298 }
299}
300
fbc0f876
SF		 301static void user_ent_hash_build(void)
302{
303 const char *root = getenv("PROC_ROOT") ? : "/proc/";
304 struct dirent *d;
305 char name[1024];
306 int nameoff;
307 DIR *dir;
116ac927
RH		 308 char *pid_context;
309 char *sock_context;
310 const char *no_ctx = "unavailable";
311
312 /* If show_users & show_proc_ctx set only do this once */
313 if (user_ent_hash_build_init != 0)
314 return;
315
316 user_ent_hash_build_init = 1;
fbc0f876
SF		 317
318 strcpy(name, root);
319 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
aba5acdf 320 strcat(name, "/");
fbc0f876 321
aba5acdf 322 nameoff = strlen(name);
fbc0f876
SF		 323
324 dir = opendir(name);
325 if (!dir)
326 return;
aba5acdf
SH		 327
328 while ((d = readdir(dir)) != NULL) {
aba5acdf 329 struct dirent *d1;
aba5acdf 330 char process[16];
116ac927 331 char *p;
fbc0f876
SF		 332 int pid, pos;
333 DIR *dir1;
334 char crap;
aba5acdf
SH		 335
336 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
337 continue;
338
116ac927
RH		 339 if (getpidcon(pid, &pid_context) != 0)
340 pid_context = strdup(no_ctx);
341
fbc0f876 342 sprintf(name + nameoff, "%d/fd/", pid);
aba5acdf
SH		 343 pos = strlen(name);
344 if ((dir1 = opendir(name)) == NULL)
345 continue;
346
fbc0f876 347 process[0] = '\0';
116ac927 348 p = process;
aba5acdf
SH		 349
350 while ((d1 = readdir(dir1)) != NULL) {
fbc0f876
SF		 351 const char *pattern = "socket:[";
352 unsigned int ino;
aba5acdf 353 char lnk[64];
18445b3e 354 int fd;
788731b3 355 ssize_t link_len;
116ac927 356 char tmp[1024];
aba5acdf
SH		 357
358 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
359 continue;
360
361 sprintf(name+pos, "%d", fd);
788731b3
TJ		 362
363 link_len = readlink(name, lnk, sizeof(lnk)-1);
364 if (link_len == -1)
365 continue;
366 lnk[link_len] = '\0';
367
368 if (strncmp(lnk, pattern, strlen(pattern)))
aba5acdf
SH		 369 continue;
370
fbc0f876 371 sscanf(lnk, "socket:[%u]", &ino);
aba5acdf 372
116ac927
RH		 373 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
374 root, pid, d1->d_name);
375
376 if (getfilecon(tmp, &sock_context) <= 0)
377 sock_context = strdup(no_ctx);
378
379 if (*p == '\0') {
aba5acdf 380 FILE *fp;
fbc0f876 381
116ac927
RH		 382 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
383 root, pid);
aba5acdf 384 if ((fp = fopen(tmp, "r")) != NULL) {
116ac927 385 fscanf(fp, "%*d (%[^)])", p);
aba5acdf
SH		 386 fclose(fp);
387 }
388 }
116ac927
RH		 389 user_ent_add(ino, p, pid, fd,
390 pid_context, sock_context);
391 free(sock_context);
aba5acdf 392 }
116ac927 393 free(pid_context);
aba5acdf
SH		 394 closedir(dir1);
395 }
396 closedir(dir);
fbc0f876
SF		 397}
398
116ac927
RH		 399enum entry_types {
400 USERS,
401 PROC_CTX,
402 PROC_SOCK_CTX
403};
404
405#define ENTRY_BUF_SIZE 512
406static int find_entry(unsigned ino, char **buf, int type)
fbc0f876
SF		 407{
408 struct user_ent *p;
409 int cnt = 0;
410 char *ptr;
116ac927
RH		 411 char **new_buf = buf;
412 int len, new_buf_len;
413 int buf_used = 0;
414 int buf_len = 0;
fbc0f876
SF		 415
416 if (!ino)
417 return 0;
418
419 p = user_ent_hash[user_ent_hashfn(ino)];
116ac927 420 ptr = *buf = NULL;
fbc0f876
SF		 421 while (p) {
422 if (p->ino != ino)
423 goto next;
424
116ac927
RH		 425 while (1) {
426 ptr = *buf + buf_used;
427 switch (type) {
428 case USERS:
429 len = snprintf(ptr, buf_len - buf_used,
430 "(\"%s\",pid=%d,fd=%d),",
431 p->process, p->pid, p->fd);
432 break;
433 case PROC_CTX:
434 len = snprintf(ptr, buf_len - buf_used,
435 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
436 p->process, p->pid,
437 p->process_ctx, p->fd);
438 break;
439 case PROC_SOCK_CTX:
440 len = snprintf(ptr, buf_len - buf_used,
441 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
442 p->process, p->pid,
443 p->process_ctx, p->fd,
444 p->socket_ctx);
445 break;
446 default:
447 fprintf(stderr, "ss: invalid type: %d\n", type);
448 abort();
449 }
fbc0f876 450
116ac927
RH		 451 if (len < 0 || len >= buf_len - buf_used) {
452 new_buf_len = buf_len + ENTRY_BUF_SIZE;
453 *new_buf = realloc(*buf, new_buf_len);
454 if (!new_buf) {
455 fprintf(stderr, "ss: failed to malloc buffer\n");
456 abort();
457 }
458 **buf = **new_buf;
459 buf_len = new_buf_len;
460 continue;
461 } else {
462 buf_used += len;
463 break;
464 }
465 }
fbc0f876 466 cnt++;
116ac927 467next:
fbc0f876
SF		 468 p = p->next;
469 }
116ac927
RH		 470 if (buf_used) {
471 ptr = *buf + buf_used;
fbc0f876 472 ptr[-1] = '\0';
116ac927 473 }
aba5acdf
SH		 474 return cnt;
475}
476
aba5acdf
SH		 477/* Get stats from slab */
478
479struct slabstat
480{
481 int socks;
482 int tcp_ports;
483 int tcp_tws;
484 int tcp_syns;
485 int skbs;
486};
487
488struct slabstat slabstat;
489
ae665a52 490static const char *slabstat_ids[] =
aba5acdf
SH		 491{
492 "sock",
493 "tcp_bind_bucket",
494 "tcp_tw_bucket",
495 "tcp_open_request",
496 "skbuff_head_cache",
497};
498
d1f28cf1 499static int get_slabstat(struct slabstat *s)
aba5acdf
SH		 500{
501 char buf[256];
502 FILE *fp;
503 int cnt;
504
505 memset(s, 0, sizeof(*s));
506
ab01dbbb
SH		 507 fp = slabinfo_open();
508 if (!fp)
aba5acdf
SH		 509 return -1;
510
511 cnt = sizeof(*s)/sizeof(int);
512
513 fgets(buf, sizeof(buf), fp);
514 while(fgets(buf, sizeof(buf), fp) != NULL) {
515 int i;
516 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
517 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
518 sscanf(buf, "%*s%d", ((int *)s) + i);
519 cnt--;
520 break;
521 }
522 }
523 if (cnt <= 0)
524 break;
525 }
526
527 fclose(fp);
528 return 0;
529}
530
7d105b56
SH		 531static const char *sstate_name[] = {
532 "UNKNOWN",
9cb1eccf
ED		 533 [SS_ESTABLISHED] = "ESTAB",
534 [SS_SYN_SENT] = "SYN-SENT",
535 [SS_SYN_RECV] = "SYN-RECV",
536 [SS_FIN_WAIT1] = "FIN-WAIT-1",
537 [SS_FIN_WAIT2] = "FIN-WAIT-2",
538 [SS_TIME_WAIT] = "TIME-WAIT",
539 [SS_CLOSE] = "UNCONN",
540 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
541 [SS_LAST_ACK] = "LAST-ACK",
542 [SS_LISTEN] = "LISTEN",
543 [SS_CLOSING] = "CLOSING",
aba5acdf
SH		 544};
545
7d105b56
SH		 546static const char *sstate_namel[] = {
547 "UNKNOWN",
9cb1eccf
ED		 548 [SS_ESTABLISHED] = "established",
549 [SS_SYN_SENT] = "syn-sent",
550 [SS_SYN_RECV] = "syn-recv",
551 [SS_FIN_WAIT1] = "fin-wait-1",
552 [SS_FIN_WAIT2] = "fin-wait-2",
553 [SS_TIME_WAIT] = "time-wait",
554 [SS_CLOSE] = "unconnected",
555 [SS_CLOSE_WAIT] = "close-wait",
556 [SS_LAST_ACK] = "last-ack",
557 [SS_LISTEN] = "listening",
558 [SS_CLOSING] = "closing",
aba5acdf
SH		 559};
560
561struct tcpstat
562{
563 inet_prefix local;
564 inet_prefix remote;
565 int lport;
566 int rport;
567 int state;
568 int rq, wq;
569 int timer;
570 int timeout;
571 int retrs;
e7113c61 572 unsigned ino;
aba5acdf 573 int probes;
e7113c61 574 unsigned uid;
aba5acdf
SH		 575 int refcnt;
576 unsigned long long sk;
577 int rto, ato, qack, cwnd, ssthresh;
578};
579
7d105b56 580static const char *tmr_name[] = {
aba5acdf
SH		 581 "off",
582 "on",
583 "keepalive",
584 "timewait",
585 "persist",
586 "unknown"
587};
588
d1f28cf1 589static const char *print_ms_timer(int timeout)
aba5acdf
SH		 590{
591 static char buf[64];
592 int secs, msecs, minutes;
593 if (timeout < 0)
594 timeout = 0;
595 secs = timeout/1000;
596 minutes = secs/60;
597 secs = secs%60;
598 msecs = timeout%1000;
599 buf[0] = 0;
600 if (minutes) {
601 msecs = 0;
602 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
603 if (minutes > 9)
604 secs = 0;
605 }
606 if (secs) {
607 if (secs > 9)
608 msecs = 0;
609 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
610 }
611 if (msecs)
612 sprintf(buf+strlen(buf), "%03dms", msecs);
613 return buf;
e7113c61 614}
aba5acdf 615
d1f28cf1 616static const char *print_hz_timer(int timeout)
aba5acdf 617{
2d44be19 618 int hz = get_user_hz();
aba5acdf 619 return print_ms_timer(((timeout*1000) + hz-1)/hz);
e7113c61 620}
aba5acdf
SH		 621
622struct scache
623{
624 struct scache *next;
625 int port;
626 char *name;
627 const char *proto;
628};
629
630struct scache *rlist;
631
d1f28cf1 632static void init_service_resolver(void)
aba5acdf
SH		 633{
634 char buf[128];
635 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
636 if (fp) {
637 fgets(buf, sizeof(buf), fp);
638 while (fgets(buf, sizeof(buf), fp) != NULL) {
639 unsigned int progn, port;
640 char proto[128], prog[128];
641 if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
642 &port, prog+4) == 4) {
643 struct scache *c = malloc(sizeof(*c));
644 if (c) {
645 c->port = port;
646 memcpy(prog, "rpc.", 4);
647 c->name = strdup(prog);
648 if (strcmp(proto, TCP_PROTO) == 0)
649 c->proto = TCP_PROTO;
650 else if (strcmp(proto, UDP_PROTO) == 0)
651 c->proto = UDP_PROTO;
652 else
653 c->proto = NULL;
654 c->next = rlist;
655 rlist = c;
656 }
657 }
658 }
2bcc3c16 659 pclose(fp);
aba5acdf
SH		 660 }
661}
662
ab61159a
SH		 663static int ip_local_port_min, ip_local_port_max;
664
665/* Even do not try default linux ephemeral port ranges:
666 * default /etc/services contains so much of useless crap
667 * wouldbe "allocated" to this area that resolution
668 * is really harmful. I shrug each time when seeing
669 * "socks" or "cfinger" in dumps.
670 */
671static int is_ephemeral(int port)
672{
673 if (!ip_local_port_min) {
ab01dbbb 674 FILE *f = ephemeral_ports_open();
ab61159a 675 if (f) {
ae665a52 676 fscanf(f, "%d %d",
ab61159a
SH		 677 &ip_local_port_min, &ip_local_port_max);
678 fclose(f);
679 } else {
680 ip_local_port_min = 1024;
681 ip_local_port_max = 4999;
682 }
683 }
684
685 return (port >= ip_local_port_min && port<= ip_local_port_max);
686}
687
688
d1f28cf1 689static const char *__resolve_service(int port)
aba5acdf
SH		 690{
691 struct scache *c;
692
693 for (c = rlist; c; c = c->next) {
694 if (c->port == port && c->proto == dg_proto)
695 return c->name;
696 }
697
ab61159a 698 if (!is_ephemeral(port)) {
aba5acdf
SH		 699 static int notfirst;
700 struct servent *se;
701 if (!notfirst) {
702 setservent(1);
703 notfirst = 1;
ae665a52 704 }
aba5acdf
SH		 705 se = getservbyport(htons(port), dg_proto);
706 if (se)
707 return se->s_name;
708 }
709
710 return NULL;
711}
712
713
d1f28cf1 714static const char *resolve_service(int port)
aba5acdf
SH		 715{
716 static char buf[128];
717 static struct scache cache[256];
718
719 if (port == 0) {
720 buf[0] = '*';
721 buf[1] = 0;
722 return buf;
723 }
724
725 if (resolve_services) {
726 if (dg_proto == RAW_PROTO) {
727 return inet_proto_n2a(port, buf, sizeof(buf));
728 } else {
729 struct scache *c;
730 const char *res;
731 int hash = (port^(((unsigned long)dg_proto)>>2))&255;
732
ae665a52 733 for (c = &cache[hash]; c; c = c->next) {
aba5acdf
SH		 734 if (c->port == port &&
735 c->proto == dg_proto) {
736 if (c->name)
737 return c->name;
738 goto do_numeric;
739 }
740 }
741
742 if ((res = __resolve_service(port)) != NULL) {
743 if ((c = malloc(sizeof(*c))) == NULL)
744 goto do_numeric;
745 } else {
746 c = &cache[hash];
747 if (c->name)
748 free(c->name);
749 }
750 c->port = port;
751 c->name = NULL;
752 c->proto = dg_proto;
753 if (res) {
754 c->name = strdup(res);
755 c->next = cache[hash].next;
756 cache[hash].next = c;
757 }
758 if (c->name)
759 return c->name;
760 }
761 }
762
763 do_numeric:
764 sprintf(buf, "%u", port);
765 return buf;
766}
767
7c8a3cfb 768static void formatted_print(const inet_prefix *a, int port, unsigned int ifindex)
aba5acdf
SH		 769{
770 char buf[1024];
771 const char *ap = buf;
772 int est_len;
773
774 est_len = addr_width;
775
776 if (a->family == AF_INET) {
777 if (a->data[0] == 0) {
778 buf[0] = '*';
779 buf[1] = 0;
780 } else {
781 ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
782 }
783 } else {
784 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
785 est_len = strlen(ap);
786 if (est_len <= addr_width)
787 est_len = addr_width;
788 else
789 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
790 }
7c8a3cfb
FLB		 791 if (ifindex) {
792 const char *ifname = ll_index_to_name(ifindex);
793 const int len = strlen(ifname) + 1; /* +1 for percent char */
794
795 printf("%*s%%%s:%-*s ", est_len - len, ap, ifname, serv_width,
796 resolve_service(port));
797 } else
798 printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
aba5acdf
SH		 799}
800
801struct aafilter
802{
803 inet_prefix addr;
804 int port;
805 struct aafilter *next;
806};
807
d1f28cf1
SH		 808static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
809 int plen)
aba5acdf
SH		 810{
811 if (!inet_addr_match(a, p, plen))
812 return 0;
7d105b56 813
aba5acdf
SH		 814 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
815 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
816 * sockets. Fair? */
817 if (p->family == AF_INET && a->family == AF_INET6) {
818 if (a->data[0] == 0 && a->data[1] == 0 &&
819 a->data[2] == htonl(0xffff)) {
820 inet_prefix tmp = *a;
821 tmp.data[0] = a->data[3];
822 return inet_addr_match(&tmp, p, plen);
823 }
824 }
825 return 1;
826}
827
d1f28cf1 828static int unix_match(const inet_prefix *a, const inet_prefix *p)
aba5acdf
SH		 829{
830 char *addr, *pattern;
831 memcpy(&addr, a->data, sizeof(addr));
832 memcpy(&pattern, p->data, sizeof(pattern));
833 if (pattern == NULL)
834 return 1;
835 if (addr == NULL)
836 addr = "";
837 return !fnmatch(pattern, addr, 0);
838}
839
d1f28cf1 840static int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
aba5acdf
SH		 841{
842 switch (f->type) {
843 case SSF_S_AUTO:
844 {
845 static int low, high=65535;
846
847 if (s->local.family == AF_UNIX) {
848 char *p;
849 memcpy(&p, s->local.data, sizeof(p));
850 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
ae665a52 851 strspn(p+1, "0123456789abcdef") == 5);
aba5acdf
SH		 852 }
853 if (s->local.family == AF_PACKET)
854 return s->lport == 0 && s->local.data == 0;
855 if (s->local.family == AF_NETLINK)
856 return s->lport < 0;
857
858 if (!low) {
ab01dbbb 859 FILE *fp = ephemeral_ports_open();
aba5acdf
SH		 860 if (fp) {
861 fscanf(fp, "%d%d", &low, &high);
862 fclose(fp);
863 }
864 }
865 return s->lport >= low && s->lport <= high;
866 }
867 case SSF_DCOND:
868 {
869 struct aafilter *a = (void*)f->pred;
870 if (a->addr.family == AF_UNIX)
871 return unix_match(&s->remote, &a->addr);
872 if (a->port != -1 && a->port != s->rport)
873 return 0;
874 if (a->addr.bitlen) {
875 do {
876 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
877 return 1;
878 } while ((a = a->next) != NULL);
879 return 0;
880 }
881 return 1;
882 }
883 case SSF_SCOND:
884 {
885 struct aafilter *a = (void*)f->pred;
886 if (a->addr.family == AF_UNIX)
887 return unix_match(&s->local, &a->addr);
888 if (a->port != -1 && a->port != s->lport)
889 return 0;
890 if (a->addr.bitlen) {
891 do {
892 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
893 return 1;
ae665a52 894 } while ((a = a->next) != NULL);
aba5acdf
SH		 895 return 0;
896 }
897 return 1;
898 }
899 case SSF_D_GE:
900 {
901 struct aafilter *a = (void*)f->pred;
902 return s->rport >= a->port;
903 }
904 case SSF_D_LE:
905 {
906 struct aafilter *a = (void*)f->pred;
907 return s->rport <= a->port;
908 }
909 case SSF_S_GE:
910 {
911 struct aafilter *a = (void*)f->pred;
912 return s->lport >= a->port;
913 }
914 case SSF_S_LE:
915 {
916 struct aafilter *a = (void*)f->pred;
917 return s->lport <= a->port;
918 }
919
920 /* Yup. It is recursion. Sorry. */
921 case SSF_AND:
922 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
923 case SSF_OR:
924 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
925 case SSF_NOT:
926 return !run_ssfilter(f->pred, s);
927 default:
928 abort();
929 }
930}
931
ae665a52 932/* Relocate external jumps by reloc. */
b4b0b7d5 933static void ssfilter_patch(char *a, int len, int reloc)
aba5acdf
SH		 934{
935 while (len > 0) {
351efcde 936 struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a;
aba5acdf
SH		 937 if (op->no == len+4)
938 op->no += reloc;
939 len -= op->yes;
940 a += op->yes;
941 }
942 if (len < 0)
943 abort();
944}
945
b4b0b7d5 946static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
aba5acdf
SH		 947{
948 switch (f->type) {
949 case SSF_S_AUTO:
950 {
951 if (!(*bytecode=malloc(4))) abort();
351efcde 952 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
df39de8d 953 return 4;
aba5acdf
SH		 954 }
955 case SSF_DCOND:
956 case SSF_SCOND:
957 {
958 struct aafilter *a = (void*)f->pred;
959 struct aafilter *b;
960 char *ptr;
351efcde 961 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
aba5acdf
SH		 962 int len = 0;
963
964 for (b=a; b; b=b->next) {
351efcde 965 len += 4 + sizeof(struct inet_diag_hostcond);
aba5acdf
SH		 966 if (a->addr.family == AF_INET6)
967 len += 16;
968 else
969 len += 4;
970 if (b->next)
971 len += 4;
972 }
973 if (!(ptr = malloc(len))) abort();
974 *bytecode = ptr;
975 for (b=a; b; b=b->next) {
351efcde 976 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
aba5acdf 977 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
351efcde
SH		 978 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
979 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4);
aba5acdf 980
351efcde 981 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
aba5acdf
SH		 982 cond->family = a->addr.family;
983 cond->port = a->port;
984 cond->prefix_len = a->addr.bitlen;
985 memcpy(cond->addr, a->addr.data, alen);
986 ptr += oplen;
987 if (b->next) {
351efcde
SH		 988 op = (struct inet_diag_bc_op *)ptr;
989 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
aba5acdf
SH		 990 ptr += 4;
991 }
992 }
993 return ptr - *bytecode;
994 }
995 case SSF_D_GE:
996 {
997 struct aafilter *x = (void*)f->pred;
998 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 999 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1000 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1001 return 8;
1002 }
1003 case SSF_D_LE:
1004 {
1005 struct aafilter *x = (void*)f->pred;
1006 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 1007 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1008 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1009 return 8;
1010 }
1011 case SSF_S_GE:
1012 {
1013 struct aafilter *x = (void*)f->pred;
1014 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 1015 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1016 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1017 return 8;
1018 }
1019 case SSF_S_LE:
1020 {
1021 struct aafilter *x = (void*)f->pred;
1022 if (!(*bytecode=malloc(8))) abort();
351efcde
SH		 1023 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1024 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
aba5acdf
SH		 1025 return 8;
1026 }
1027
1028 case SSF_AND:
1029 {
2a4fa1c3
AH		 1030 char *a1, *a2, *a;
1031 int l1, l2;
aba5acdf
SH		 1032 l1 = ssfilter_bytecompile(f->pred, &a1);
1033 l2 = ssfilter_bytecompile(f->post, &a2);
1034 if (!(a = malloc(l1+l2))) abort();
1035 memcpy(a, a1, l1);
1036 memcpy(a+l1, a2, l2);
1037 free(a1); free(a2);
1038 ssfilter_patch(a, l1, l2);
1039 *bytecode = a;
1040 return l1+l2;
1041 }
1042 case SSF_OR:
1043 {
2a4fa1c3
AH		 1044 char *a1, *a2, *a;
1045 int l1, l2;
aba5acdf
SH		 1046 l1 = ssfilter_bytecompile(f->pred, &a1);
1047 l2 = ssfilter_bytecompile(f->post, &a2);
1048 if (!(a = malloc(l1+l2+4))) abort();
1049 memcpy(a, a1, l1);
1050 memcpy(a+l1+4, a2, l2);
1051 free(a1); free(a2);
351efcde 1052 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
aba5acdf
SH		 1053 *bytecode = a;
1054 return l1+l2+4;
1055 }
1056 case SSF_NOT:
1057 {
2a4fa1c3
AH		 1058 char *a1, *a;
1059 int l1;
aba5acdf
SH		 1060 l1 = ssfilter_bytecompile(f->pred, &a1);
1061 if (!(a = malloc(l1+4))) abort();
1062 memcpy(a, a1, l1);
1063 free(a1);
351efcde 1064 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
aba5acdf
SH		 1065 *bytecode = a;
1066 return l1+4;
1067 }
1068 default:
1069 abort();
1070 }
1071}
1072
b4b0b7d5 1073static int remember_he(struct aafilter *a, struct hostent *he)
aba5acdf 1074{
ae665a52 1075 char **ptr = he->h_addr_list;
aba5acdf
SH		 1076 int cnt = 0;
1077 int len;
1078
1079 if (he->h_addrtype == AF_INET)
1080 len = 4;
1081 else if (he->h_addrtype == AF_INET6)
1082 len = 16;
1083 else
1084 return 0;
1085
1086 while (*ptr) {
1087 struct aafilter *b = a;
1088 if (a->addr.bitlen) {
1089 if ((b = malloc(sizeof(*b))) == NULL)
1090 return cnt;
1091 *b = *a;
1092 b->next = a->next;
1093 a->next = b;
1094 }
1095 memcpy(b->addr.data, *ptr, len);
1096 b->addr.bytelen = len;
1097 b->addr.bitlen = len*8;
1098 b->addr.family = he->h_addrtype;
1099 ptr++;
1100 cnt++;
1101 }
1102 return cnt;
1103}
1104
b4b0b7d5 1105static int get_dns_host(struct aafilter *a, const char *addr, int fam)
aba5acdf
SH		 1106{
1107 static int notfirst;
1108 int cnt = 0;
1109 struct hostent *he;
1110
1111 a->addr.bitlen = 0;
1112 if (!notfirst) {
1113 sethostent(1);
1114 notfirst = 1;
1115 }
1116 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1117 if (he)
1118 cnt = remember_he(a, he);
1119 if (fam == AF_UNSPEC) {
1120 he = gethostbyname2(addr, AF_INET6);
1121 if (he)
1122 cnt += remember_he(a, he);
1123 }
1124 return !cnt;
1125}
1126
b4b0b7d5 1127static int xll_initted = 0;
aba5acdf 1128
b4b0b7d5 1129static void xll_init(void)
aba5acdf
SH		 1130{
1131 struct rtnl_handle rth;
d2468da0
SH		 1132 if (rtnl_open(&rth, 0) < 0)
1133 exit(1);
1134
aba5acdf
SH		 1135 ll_init_map(&rth);
1136 rtnl_close(&rth);
1137 xll_initted = 1;
1138}
1139
b4b0b7d5 1140static const char *xll_index_to_name(int index)
aba5acdf
SH		 1141{
1142 if (!xll_initted)
1143 xll_init();
1144 return ll_index_to_name(index);
1145}
1146
b4b0b7d5 1147static int xll_name_to_index(const char *dev)
aba5acdf
SH		 1148{
1149 if (!xll_initted)
1150 xll_init();
1151 return ll_name_to_index(dev);
1152}
1153
1154void *parse_hostcond(char *addr)
1155{
1156 char *port = NULL;
1157 struct aafilter a;
1158 struct aafilter *res;
1159 int fam = preferred_family;
1160
1161 memset(&a, 0, sizeof(a));
1162 a.port = -1;
1163
1164 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1165 char *p;
1166 a.addr.family = AF_UNIX;
1167 if (strncmp(addr, "unix:", 5) == 0)
1168 addr+=5;
1169 p = strdup(addr);
1170 a.addr.bitlen = 8*strlen(p);
1171 memcpy(a.addr.data, &p, sizeof(p));
1172 goto out;
1173 }
1174
1175 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1176 a.addr.family = AF_PACKET;
1177 a.addr.bitlen = 0;
1178 if (strncmp(addr, "link:", 5) == 0)
1179 addr+=5;
1180 port = strchr(addr, ':');
1181 if (port) {
1182 *port = 0;
1183 if (port[1] && strcmp(port+1, "*")) {
1184 if (get_integer(&a.port, port+1, 0)) {
1185 if ((a.port = xll_name_to_index(port+1)) <= 0)
1186 return NULL;
1187 }
1188 }
1189 }
1190 if (addr[0] && strcmp(addr, "*")) {
1191 unsigned short tmp;
1192 a.addr.bitlen = 32;
1193 if (ll_proto_a2n(&tmp, addr))
1194 return NULL;
1195 a.addr.data[0] = ntohs(tmp);
1196 }
1197 goto out;
1198 }
1199
1200 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1201 a.addr.family = AF_NETLINK;
1202 a.addr.bitlen = 0;
1203 if (strncmp(addr, "netlink:", 8) == 0)
1204 addr+=8;
1205 port = strchr(addr, ':');
1206 if (port) {
1207 *port = 0;
1208 if (port[1] && strcmp(port+1, "*")) {
1209 if (get_integer(&a.port, port+1, 0)) {
1210 if (strcmp(port+1, "kernel") == 0)
1211 a.port = 0;
1212 else
1213 return NULL;
1214 }
1215 }
1216 }
1217 if (addr[0] && strcmp(addr, "*")) {
1218 a.addr.bitlen = 32;
1219 if (get_u32(a.addr.data, addr, 0)) {
1220 if (strcmp(addr, "rtnl") == 0)
1221 a.addr.data[0] = 0;
1222 else if (strcmp(addr, "fw") == 0)
1223 a.addr.data[0] = 3;
1224 else if (strcmp(addr, "tcpdiag") == 0)
1225 a.addr.data[0] = 4;
1226 else
1227 return NULL;
1228 }
1229 }
1230 goto out;
1231 }
1232
1233 if (strncmp(addr, "inet:", 5) == 0) {
1234 addr += 5;
1235 fam = AF_INET;
1236 } else if (strncmp(addr, "inet6:", 6) == 0) {
1237 addr += 6;
1238 fam = AF_INET6;
1239 }
1240
1241 /* URL-like literal [] */
1242 if (addr[0] == '[') {
1243 addr++;
1244 if ((port = strchr(addr, ']')) == NULL)
1245 return NULL;
1246 *port++ = 0;
1247 } else if (addr[0] == '*') {
1248 port = addr+1;
1249 } else {
1250 port = strrchr(strchr(addr, '/') ? : addr, ':');
1251 }
1252 if (port && *port) {
1253 if (*port != ':')
1254 return NULL;
1255 *port++ = 0;
1256 if (*port && *port != '*') {
1257 if (get_integer(&a.port, port, 0)) {
1258 struct servent *se1 = NULL;
1259 struct servent *se2 = NULL;
1260 if (current_filter.dbs&(1<<UDP_DB))
1261 se1 = getservbyname(port, UDP_PROTO);
1262 if (current_filter.dbs&(1<<TCP_DB))
1263 se2 = getservbyname(port, TCP_PROTO);
1264 if (se1 && se2 && se1->s_port != se2->s_port) {
1265 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1266 return NULL;
1267 }
1268 if (!se1)
1269 se1 = se2;
1270 if (se1) {
1271 a.port = ntohs(se1->s_port);
1272 } else {
1273 struct scache *s;
1274 for (s = rlist; s; s = s->next) {
1275 if ((s->proto == UDP_PROTO &&
1276 (current_filter.dbs&(1<<UDP_DB))) ||
1277 (s->proto == TCP_PROTO &&
1278 (current_filter.dbs&(1<<TCP_DB)))) {
1279 if (s->name && strcmp(s->name, port) == 0) {
1280 if (a.port > 0 && a.port != s->port) {
1281 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1282 return NULL;
1283 }
1284 a.port = s->port;
1285 }
1286 }
1287 }
1288 if (a.port <= 0) {
1289 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1290 return NULL;
1291 }
1292 }
1293 }
1294 }
1295 }
1296 if (addr && *addr && *addr != '*') {
1297 if (get_prefix_1(&a.addr, addr, fam)) {
1298 if (get_dns_host(&a, addr, fam)) {
1299 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1300 return NULL;
1301 }
1302 }
1303 }
1304
1305 out:
1306 res = malloc(sizeof(*res));
1307 if (res)
1308 memcpy(res, &a, sizeof(a));
1309 return res;
1310}
1311
ab01dbbb 1312static int tcp_show_line(char *line, const struct filter *f, int family)
aba5acdf
SH		 1313{
1314 struct tcpstat s;
1315 char *loc, *rem, *data;
1316 char opt[256];
1317 int n;
1318 char *p;
ae665a52 1319
aba5acdf
SH		 1320 if ((p = strchr(line, ':')) == NULL)
1321 return -1;
1322 loc = p+2;
ae665a52 1323
aba5acdf
SH		 1324 if ((p = strchr(loc, ':')) == NULL)
1325 return -1;
1326 p[5] = 0;
1327 rem = p+6;
ae665a52 1328
aba5acdf
SH		 1329 if ((p = strchr(rem, ':')) == NULL)
1330 return -1;
1331 p[5] = 0;
1332 data = p+6;
ae665a52 1333
aba5acdf
SH		 1334 do {
1335 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1336
1337 if (!(f->states & (1<<state)))
1338 return 0;
1339 } while (0);
ae665a52 1340
aba5acdf
SH		 1341 s.local.family = s.remote.family = family;
1342 if (family == AF_INET) {
1343 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1344 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1345 s.local.bytelen = s.remote.bytelen = 4;
1346 } else {
1347 sscanf(loc, "%08x%08x%08x%08x:%x",
1348 s.local.data,
1349 s.local.data+1,
1350 s.local.data+2,
1351 s.local.data+3,
1352 &s.lport);
1353 sscanf(rem, "%08x%08x%08x%08x:%x",
1354 s.remote.data,
1355 s.remote.data+1,
1356 s.remote.data+2,
1357 s.remote.data+3,
1358 &s.rport);
1359 s.local.bytelen = s.remote.bytelen = 16;
1360 }
ae665a52 1361
aba5acdf
SH		 1362 if (f->f && run_ssfilter(f->f, &s) == 0)
1363 return 0;
ae665a52 1364
aba5acdf 1365 opt[0] = 0;
e7113c61 1366 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n",
aba5acdf
SH		 1367 &s.state, &s.wq, &s.rq,
1368 &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1369 &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1370 &s.cwnd, &s.ssthresh, opt);
ae665a52 1371
aba5acdf
SH		 1372 if (n < 17)
1373 opt[0] = 0;
ae665a52 1374
aba5acdf
SH		 1375 if (n < 12) {
1376 s.rto = 0;
1377 s.cwnd = 2;
1378 s.ssthresh = -1;
1379 s.ato = s.qack = 0;
1380 }
ae665a52 1381
aba5acdf
SH		 1382 if (netid_width)
1383 printf("%-*s ", netid_width, "tcp");
1384 if (state_width)
1385 printf("%-*s ", state_width, sstate_name[s.state]);
ae665a52 1386
aba5acdf 1387 printf("%-6d %-6d ", s.rq, s.wq);
ae665a52 1388
7c8a3cfb
FLB		 1389 formatted_print(&s.local, s.lport, 0);
1390 formatted_print(&s.remote, s.rport, 0);
ae665a52 1391
aba5acdf
SH		 1392 if (show_options) {
1393 if (s.timer) {
1394 if (s.timer > 4)
1395 s.timer = 5;
1396 printf(" timer:(%s,%s,%d)",
1397 tmr_name[s.timer],
1398 print_hz_timer(s.timeout),
1399 s.timer != 1 ? s.probes : s.retrs);
1400 }
1401 }
1402 if (show_tcpinfo) {
4c1db131
SH		 1403 int hz = get_user_hz();
1404 if (s.rto && s.rto != 3*hz)
1405 printf(" rto:%g", (double)s.rto/hz);
aba5acdf 1406 if (s.ato)
4c1db131 1407 printf(" ato:%g", (double)s.ato/hz);
aba5acdf
SH		 1408 if (s.cwnd != 2)
1409 printf(" cwnd:%d", s.cwnd);
1410 if (s.ssthresh != -1)
1411 printf(" ssthresh:%d", s.ssthresh);
1412 if (s.qack/2)
1413 printf(" qack:%d", s.qack/2);
1414 if (s.qack&1)
1415 printf(" bidir");
1416 }
116ac927
RH		 1417 char *buf = NULL;
1418 if (show_proc_ctx || show_sock_ctx) {
1419 if (find_entry(s.ino, &buf,
1420 (show_proc_ctx & show_sock_ctx) ?
1421 PROC_SOCK_CTX : PROC_CTX) > 0) {
1422 printf(" users:(%s)", buf);
1423 free(buf);
1424 }
1425 } else if (show_users) {
1426 if (find_entry(s.ino, &buf, USERS) > 0) {
1427 printf(" users:(%s)", buf);
1428 free(buf);
1429 }
aba5acdf 1430 }
116ac927 1431
aba5acdf
SH		 1432 if (show_details) {
1433 if (s.uid)
1434 printf(" uid:%u", (unsigned)s.uid);
e7113c61 1435 printf(" ino:%u", s.ino);
aba5acdf
SH		 1436 printf(" sk:%llx", s.sk);
1437 if (opt[0])
1438 printf(" opt:\"%s\"", opt);
1439 }
1440 printf("\n");
1441
1442 return 0;
1443}
1444
ab01dbbb
SH		 1445static int generic_record_read(FILE *fp,
1446 int (*worker)(char*, const struct filter *, int),
1447 const struct filter *f, int fam)
aba5acdf 1448{
ab01dbbb 1449 char line[256];
aba5acdf 1450
ab01dbbb
SH		 1451 /* skip header */
1452 if (fgets(line, sizeof(line), fp) == NULL)
aba5acdf 1453 goto outerr;
ab01dbbb
SH		 1454
1455 while (fgets(line, sizeof(line), fp) != NULL) {
1456 int n = strlen(line);
1457 if (n == 0 || line[n-1] != '\n') {
1458 errno = -EINVAL;
1459 return -1;
aba5acdf 1460 }
ab01dbbb 1461 line[n-1] = 0;
aba5acdf 1462
ab01dbbb
SH		 1463 if (worker(line, f, fam) < 0)
1464 return 0;
1465 }
aba5acdf 1466outerr:
ab01dbbb
SH		 1467
1468 return ferror(fp) ? -1 : 0;
aba5acdf 1469}
ae665a52 1470
b4b0b7d5
SH		 1471static char *sprint_bw(char *buf, double bw)
1472{
ae665a52 1473 if (bw > 1000000.)
b4b0b7d5
SH		 1474 sprintf(buf,"%.1fM", bw / 1000000.);
1475 else if (bw > 1000.)
1476 sprintf(buf,"%.1fK", bw / 1000.);
1477 else
1478 sprintf(buf, "%g", bw);
1479
1480 return buf;
1481}
aba5acdf 1482
51ff9f24
HFS		 1483static void print_skmeminfo(struct rtattr *tb[], int attrtype)
1484{
1485 const __u32 *skmeminfo;
1486 if (!tb[attrtype])
1487 return;
1488 skmeminfo = RTA_DATA(tb[attrtype]);
1489
1490 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
1491 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
1492 skmeminfo[SK_MEMINFO_RCVBUF],
1493 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
1494 skmeminfo[SK_MEMINFO_SNDBUF],
1495 skmeminfo[SK_MEMINFO_FWD_ALLOC],
1496 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
1497 skmeminfo[SK_MEMINFO_OPTMEM]);
1498
1499 if (RTA_PAYLOAD(tb[attrtype]) >=
1500 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
1501 printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
1502
1503 printf(")");
1504}
1505
5b816047
PE		 1506static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
1507 struct rtattr *tb[])
7d105b56 1508{
b4b0b7d5
SH		 1509 char b1[64];
1510 double rtt = 0;
7d105b56 1511
910b0397 1512 if (tb[INET_DIAG_SKMEMINFO]) {
51ff9f24 1513 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
c6d6c92c 1514 } else if (tb[INET_DIAG_MEMINFO]) {
351efcde
SH		 1515 const struct inet_diag_meminfo *minfo
1516 = RTA_DATA(tb[INET_DIAG_MEMINFO]);
7d105b56 1517 printf(" mem:(r%u,w%u,f%u,t%u)",
351efcde
SH		 1518 minfo->idiag_rmem,
1519 minfo->idiag_wmem,
1520 minfo->idiag_fmem,
1521 minfo->idiag_tmem);
7d105b56
SH		 1522 }
1523
351efcde 1524 if (tb[INET_DIAG_INFO]) {
05e18118 1525 struct tcp_info *info;
351efcde 1526 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
05e18118
SH		 1527
1528 /* workaround for older kernels with less fields */
1529 if (len < sizeof(*info)) {
1530 info = alloca(sizeof(*info));
1531 memset(info, 0, sizeof(*info));
351efcde 1532 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
05e18118 1533 } else
351efcde 1534 info = RTA_DATA(tb[INET_DIAG_INFO]);
05e18118 1535
b4b0b7d5
SH		 1536 if (show_options) {
1537 if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1538 printf(" ts");
1539 if (info->tcpi_options & TCPI_OPT_SACK)
1540 printf(" sack");
1541 if (info->tcpi_options & TCPI_OPT_ECN)
1542 printf(" ecn");
719b958b
ED		 1543 if (info->tcpi_options & TCPI_OPT_ECN_SEEN)
1544 printf(" ecnseen");
9cb1eccf
ED		 1545 if (info->tcpi_options & TCPI_OPT_SYN_DATA)
1546 printf(" fastopen");
b4b0b7d5 1547 }
52d5ac3f 1548
351efcde 1549 if (tb[INET_DIAG_CONG])
ff24746c 1550 printf(" %s", rta_getattr_str(tb[INET_DIAG_CONG]));
ea8fc104 1551
ae665a52 1552 if (info->tcpi_options & TCPI_OPT_WSCALE)
05e18118
SH		 1553 printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1554 info->tcpi_rcv_wscale);
7d105b56
SH		 1555 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1556 printf(" rto:%g", (double)info->tcpi_rto/1000);
1557 if (info->tcpi_rtt)
1558 printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1559 (double)info->tcpi_rttvar/1000);
1560 if (info->tcpi_ato)
1561 printf(" ato:%g", (double)info->tcpi_ato/1000);
4d354347
BH		 1562 if (info->tcpi_snd_mss)
1563 printf(" mss:%d", info->tcpi_snd_mss);
7d105b56
SH		 1564 if (info->tcpi_snd_cwnd != 2)
1565 printf(" cwnd:%d", info->tcpi_snd_cwnd);
1566 if (info->tcpi_snd_ssthresh < 0xFFFF)
1567 printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
52d5ac3f 1568
b4b0b7d5 1569 rtt = (double) info->tcpi_rtt;
351efcde 1570 if (tb[INET_DIAG_VEGASINFO]) {
05e18118 1571 const struct tcpvegas_info *vinfo
351efcde 1572 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
7d105b56 1573
ae665a52 1574 if (vinfo->tcpv_enabled &&
ea8fc104
SH		 1575 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1576 rtt = vinfo->tcpv_rtt;
b4b0b7d5
SH		 1577 }
1578
1579 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1580 printf(" send %sbps",
1581 sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1582 (double) info->tcpi_snd_mss * 8000000.
1583 / rtt));
7d105b56 1584 }
b4b0b7d5 1585
eb6028b2
ED		 1586 if (info->tcpi_pacing_rate &&
1587 info->tcpi_pacing_rate != ~0ULL) {
1588 printf(" pacing_rate %sbps",
1589 sprint_bw(b1, info->tcpi_pacing_rate * 8.));
1590
1591 if (info->tcpi_max_pacing_rate &&
1592 info->tcpi_max_pacing_rate != ~0ULL)
1593 printf("/%sbps",
1594 sprint_bw(b1, info->tcpi_max_pacing_rate * 8.));
1595 }
260804f4
ED		 1596 if (info->tcpi_unacked)
1597 printf(" unacked:%u", info->tcpi_unacked);
1598 if (info->tcpi_retrans || info->tcpi_total_retrans)
1599 printf(" retrans:%u/%u", info->tcpi_retrans,
1600 info->tcpi_total_retrans);
1601 if (info->tcpi_lost)
1602 printf(" lost:%u", info->tcpi_lost);
1603 if (info->tcpi_sacked && r->idiag_state != SS_LISTEN)
1604 printf(" sacked:%u", info->tcpi_sacked);
1605 if (info->tcpi_fackets)
1606 printf(" fackets:%u", info->tcpi_fackets);
1607 if (info->tcpi_reordering != 3)
1608 printf(" reordering:%d", info->tcpi_reordering);
b4b0b7d5
SH		 1609 if (info->tcpi_rcv_rtt)
1610 printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1611 if (info->tcpi_rcv_space)
1612 printf(" rcv_space:%d", info->tcpi_rcv_space);
1613
7d105b56 1614 }
7d105b56 1615}
aba5acdf 1616
77a8ca81
PE		 1617static char *proto_name(int protocol)
1618{
1619 switch (protocol) {
1620 case IPPROTO_UDP:
1621 return "udp";
1622 case IPPROTO_TCP:
1623 return "tcp";
1624 case IPPROTO_DCCP:
1625 return "dccp";
1626 }
1627
1628 return "???";
1629}
1630
1631static int inet_show_sock(struct nlmsghdr *nlh, struct filter *f, int protocol)
aba5acdf 1632{
5b816047 1633 struct rtattr * tb[INET_DIAG_MAX+1];
351efcde 1634 struct inet_diag_msg *r = NLMSG_DATA(nlh);
aba5acdf
SH		 1635 struct tcpstat s;
1636
5b816047
PE		 1637 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
1638 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1639
351efcde
SH		 1640 s.state = r->idiag_state;
1641 s.local.family = s.remote.family = r->idiag_family;
1642 s.lport = ntohs(r->id.idiag_sport);
1643 s.rport = ntohs(r->id.idiag_dport);
aba5acdf
SH		 1644 if (s.local.family == AF_INET) {
1645 s.local.bytelen = s.remote.bytelen = 4;
1646 } else {
1647 s.local.bytelen = s.remote.bytelen = 16;
1648 }
351efcde
SH		 1649 memcpy(s.local.data, r->id.idiag_src, s.local.bytelen);
1650 memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen);
aba5acdf
SH		 1651
1652 if (f && f->f && run_ssfilter(f->f, &s) == 0)
1653 return 0;
1654
1655 if (netid_width)
77a8ca81 1656 printf("%-*s ", netid_width, proto_name(protocol));
aba5acdf
SH		 1657 if (state_width)
1658 printf("%-*s ", state_width, sstate_name[s.state]);
1659
351efcde 1660 printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue);
aba5acdf 1661
7c8a3cfb
FLB		 1662 formatted_print(&s.local, s.lport, r->id.idiag_if);
1663 formatted_print(&s.remote, s.rport, 0);
aba5acdf
SH		 1664
1665 if (show_options) {
351efcde
SH		 1666 if (r->idiag_timer) {
1667 if (r->idiag_timer > 4)
1668 r->idiag_timer = 5;
aba5acdf 1669 printf(" timer:(%s,%s,%d)",
351efcde
SH		 1670 tmr_name[r->idiag_timer],
1671 print_ms_timer(r->idiag_expires),
1672 r->idiag_retrans);
aba5acdf
SH		 1673 }
1674 }
116ac927
RH		 1675 char *buf = NULL;
1676
1677 if (show_proc_ctx || show_sock_ctx) {
1678 if (find_entry(r->idiag_inode, &buf,
1679 (show_proc_ctx & show_sock_ctx) ?
1680 PROC_SOCK_CTX : PROC_CTX) > 0) {
1681 printf(" users:(%s)", buf);
1682 free(buf);
1683 }
1684 } else if (show_users) {
1685 if (find_entry(r->idiag_inode, &buf, USERS) > 0) {
1686 printf(" users:(%s)", buf);
1687 free(buf);
1688 }
aba5acdf 1689 }
116ac927 1690
aba5acdf 1691 if (show_details) {
351efcde
SH		 1692 if (r->idiag_uid)
1693 printf(" uid:%u", (unsigned)r->idiag_uid);
e7113c61 1694 printf(" ino:%u", r->idiag_inode);
bbe32053 1695 printf(" sk:");
351efcde
SH		 1696 if (r->id.idiag_cookie[1] != 0)
1697 printf("%08x", r->id.idiag_cookie[1]);
bbe32053 1698 printf("%08x", r->id.idiag_cookie[0]);
5b816047
PE		 1699 if (tb[INET_DIAG_SHUTDOWN]) {
1700 unsigned char mask;
1701 mask = *(__u8 *)RTA_DATA(tb[INET_DIAG_SHUTDOWN]);
1702 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
1703 }
aba5acdf
SH		 1704 }
1705 if (show_mem || show_tcpinfo) {
7d105b56 1706 printf("\n\t");
5b816047 1707 tcp_show_info(nlh, r, tb);
aba5acdf 1708 }
7d105b56 1709
aba5acdf
SH		 1710 printf("\n");
1711
1712 return 0;
aba5acdf
SH		 1713}
1714
746a695f 1715static int tcpdiag_send(int fd, int protocol, struct filter *f)
aba5acdf 1716{
aba5acdf
SH		 1717 struct sockaddr_nl nladdr;
1718 struct {
1719 struct nlmsghdr nlh;
351efcde 1720 struct inet_diag_req r;
aba5acdf
SH		 1721 } req;
1722 char *bc = NULL;
1723 int bclen;
1724 struct msghdr msg;
1725 struct rtattr rta;
aba5acdf
SH		 1726 struct iovec iov[3];
1727
346f8ca8
PE		 1728 if (protocol == IPPROTO_UDP)
1729 return -1;
1730
aba5acdf
SH		 1731 memset(&nladdr, 0, sizeof(nladdr));
1732 nladdr.nl_family = AF_NETLINK;
1733
1734 req.nlh.nlmsg_len = sizeof(req);
3fe5b534
PE		 1735 if (protocol == IPPROTO_TCP)
1736 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
1737 else
1738 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
aba5acdf
SH		 1739 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1740 req.nlh.nlmsg_pid = 0;
1741 req.nlh.nlmsg_seq = 123456;
1742 memset(&req.r, 0, sizeof(req.r));
351efcde
SH		 1743 req.r.idiag_family = AF_INET;
1744 req.r.idiag_states = f->states;
910b0397 1745 if (show_mem) {
ae665a52 1746 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
910b0397
SW		 1747 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
1748 }
b4b0b7d5 1749
7d105b56 1750 if (show_tcpinfo) {
351efcde
SH		 1751 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1752 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1753 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
7d105b56 1754 }
aba5acdf 1755
ae665a52
SH		 1756 iov[0] = (struct iovec){
1757 .iov_base = &req,
1758 .iov_len = sizeof(req)
ea8fc104 1759 };
aba5acdf
SH		 1760 if (f->f) {
1761 bclen = ssfilter_bytecompile(f->f, &bc);
351efcde 1762 rta.rta_type = INET_DIAG_REQ_BYTECODE;
aba5acdf
SH		 1763 rta.rta_len = RTA_LENGTH(bclen);
1764 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1765 iov[2] = (struct iovec){ bc, bclen };
1766 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1767 }
1768
1769 msg = (struct msghdr) {
ae665a52 1770 .msg_name = (void*)&nladdr,
ea8fc104 1771 .msg_namelen = sizeof(nladdr),
ae665a52 1772 .msg_iov = iov,
ea8fc104 1773 .msg_iovlen = f->f ? 3 : 1,
aba5acdf
SH		 1774 };
1775
930a75f9
ED		 1776 if (sendmsg(fd, &msg, 0) < 0) {
1777 close(fd);
aba5acdf 1778 return -1;
930a75f9 1779 }
aba5acdf 1780
746a695f
PE		 1781 return 0;
1782}
1783
886d19d6
PE		 1784static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
1785{
1786 struct sockaddr_nl nladdr;
1787 struct {
1788 struct nlmsghdr nlh;
1789 struct inet_diag_req_v2 r;
1790 } req;
1791 char *bc = NULL;
1792 int bclen;
1793 struct msghdr msg;
1794 struct rtattr rta;
1795 struct iovec iov[3];
1796
1797 if (family == PF_UNSPEC)
1798 return tcpdiag_send(fd, protocol, f);
1799
1800 memset(&nladdr, 0, sizeof(nladdr));
1801 nladdr.nl_family = AF_NETLINK;
1802
1803 req.nlh.nlmsg_len = sizeof(req);
1804 req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY;
1805 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1806 req.nlh.nlmsg_pid = 0;
1807 req.nlh.nlmsg_seq = 123456;
1808 memset(&req.r, 0, sizeof(req.r));
1809 req.r.sdiag_family = family;
1810 req.r.sdiag_protocol = protocol;
1811 req.r.idiag_states = f->states;
1812 if (show_mem) {
1813 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
1814 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
1815 }
1816
1817 if (show_tcpinfo) {
1818 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1819 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1820 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
1821 }
1822
1823 iov[0] = (struct iovec){
1824 .iov_base = &req,
1825 .iov_len = sizeof(req)
1826 };
1827 if (f->f) {
1828 bclen = ssfilter_bytecompile(f->f, &bc);
1829 rta.rta_type = INET_DIAG_REQ_BYTECODE;
1830 rta.rta_len = RTA_LENGTH(bclen);
1831 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1832 iov[2] = (struct iovec){ bc, bclen };
1833 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1834 }
1835
1836 msg = (struct msghdr) {
1837 .msg_name = (void*)&nladdr,
1838 .msg_namelen = sizeof(nladdr),
1839 .msg_iov = iov,
1840 .msg_iovlen = f->f ? 3 : 1,
1841 };
1842
1843 if (sendmsg(fd, &msg, 0) < 0) {
1844 close(fd);
1845 return -1;
1846 }
1847
1848 return 0;
1849}
1850
746a695f
PE		 1851static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
1852{
886d19d6 1853 int fd, family;
746a695f
PE		 1854 struct sockaddr_nl nladdr;
1855 struct msghdr msg;
1856 char buf[8192];
1857 struct iovec iov[3];
1858
1859 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
1860 return -1;
1861
886d19d6
PE		 1862 family = PF_INET;
1863again:
1864 if (sockdiag_send(family, fd, protocol, f))
746a695f
PE		 1865 return -1;
1866
1867 memset(&nladdr, 0, sizeof(nladdr));
1868 nladdr.nl_family = AF_NETLINK;
1869
ae665a52
SH		 1870 iov[0] = (struct iovec){
1871 .iov_base = buf,
1872 .iov_len = sizeof(buf)
ea8fc104 1873 };
aba5acdf
SH		 1874
1875 while (1) {
1876 int status;
1877 struct nlmsghdr *h;
1878
1879 msg = (struct msghdr) {
1880 (void*)&nladdr, sizeof(nladdr),
1881 iov, 1,
1882 NULL, 0,
1883 0
1884 };
1885
1886 status = recvmsg(fd, &msg, 0);
1887
1888 if (status < 0) {
1889 if (errno == EINTR)
1890 continue;
1891 perror("OVERRUN");
1892 continue;
1893 }
1894 if (status == 0) {
1895 fprintf(stderr, "EOF on netlink\n");
c51577cd 1896 close(fd);
aba5acdf
SH		 1897 return 0;
1898 }
1899
1900 if (dump_fp)
1901 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1902
1903 h = (struct nlmsghdr*)buf;
1904 while (NLMSG_OK(h, status)) {
1905 int err;
a37b01c1 1906 struct inet_diag_msg *r = NLMSG_DATA(h);
aba5acdf
SH		 1907
1908 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1909 h->nlmsg_seq != 123456)
1910 goto skip_it;
1911
886d19d6
PE		 1912 if (h->nlmsg_type == NLMSG_DONE)
1913 goto done;
1914
aba5acdf
SH		 1915 if (h->nlmsg_type == NLMSG_ERROR) {
1916 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1917 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1918 fprintf(stderr, "ERROR truncated\n");
1919 } else {
886d19d6
PE		 1920 if (family != PF_UNSPEC) {
1921 family = PF_UNSPEC;
1922 goto again;
1923 }
1924
aba5acdf 1925 errno = -err->error;
930a75f9
ED		 1926 if (errno == EOPNOTSUPP) {
1927 close(fd);
1928 return -1;
1929 }
aba5acdf
SH		 1930 perror("TCPDIAG answers");
1931 }
886d19d6
PE		 1932
1933 goto done;
aba5acdf
SH		 1934 }
1935 if (!dump_fp) {
a37b01c1
LY		 1936 if (!(f->families & (1<<r->idiag_family))) {
1937 h = NLMSG_NEXT(h, status);
1938 continue;
1939 }
77a8ca81 1940 err = inet_show_sock(h, NULL, protocol);
c51577cd
MT		 1941 if (err < 0) {
1942 close(fd);
aba5acdf 1943 return err;
c51577cd 1944 }
aba5acdf
SH		 1945 }
1946
1947skip_it:
1948 h = NLMSG_NEXT(h, status);
1949 }
1950 if (msg.msg_flags & MSG_TRUNC) {
1951 fprintf(stderr, "Message truncated\n");
1952 continue;
1953 }
1954 if (status) {
1955 fprintf(stderr, "!!!Remnant of size %d\n", status);
1956 exit(1);
1957 }
1958 }
886d19d6
PE		 1959done:
1960 if (family == PF_INET) {
1961 family = PF_INET6;
1962 goto again;
1963 }
1964
c51577cd 1965 close(fd);
aba5acdf
SH		 1966 return 0;
1967}
1968
ab01dbbb 1969static int tcp_show_netlink_file(struct filter *f)
aba5acdf
SH		 1970{
1971 FILE *fp;
1972 char buf[8192];
1973
1974 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1975 perror("fopen($TCPDIAG_FILE)");
1976 return -1;
1977 }
1978
1979 while (1) {
1980 int status, err;
1981 struct nlmsghdr *h = (struct nlmsghdr*)buf;
1982
1983 status = fread(buf, 1, sizeof(*h), fp);
1984 if (status < 0) {
1985 perror("Reading header from $TCPDIAG_FILE");
1986 return -1;
1987 }
1988 if (status != sizeof(*h)) {
1989 perror("Unexpected EOF reading $TCPDIAG_FILE");
1990 return -1;
1991 }
1992
1993 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
1994
1995 if (status < 0) {
1996 perror("Reading $TCPDIAG_FILE");
1997 return -1;
1998 }
1999 if (status + sizeof(*h) < h->nlmsg_len) {
2000 perror("Unexpected EOF reading $TCPDIAG_FILE");
2001 return -1;
2002 }
2003
2004 /* The only legal exit point */
2005 if (h->nlmsg_type == NLMSG_DONE)
2006 return 0;
2007
2008 if (h->nlmsg_type == NLMSG_ERROR) {
2009 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
2010 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2011 fprintf(stderr, "ERROR truncated\n");
2012 } else {
2013 errno = -err->error;
2014 perror("TCPDIAG answered");
2015 }
2016 return -1;
2017 }
2018
77a8ca81 2019 err = inet_show_sock(h, f, IPPROTO_TCP);
aba5acdf
SH		 2020 if (err < 0)
2021 return err;
2022 }
2023}
2024
ab01dbbb 2025static int tcp_show(struct filter *f, int socktype)
aba5acdf 2026{
ab01dbbb 2027 FILE *fp = NULL;
aba5acdf
SH		 2028 char *buf = NULL;
2029 int bufsize = 64*1024;
2030
2031 dg_proto = TCP_PROTO;
2032
2033 if (getenv("TCPDIAG_FILE"))
2034 return tcp_show_netlink_file(f);
2035
2036 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
3fe5b534 2037 && inet_show_netlink(f, NULL, socktype) == 0)
aba5acdf
SH		 2038 return 0;
2039
2040 /* Sigh... We have to parse /proc/net/tcp... */
2041
ab01dbbb 2042
aba5acdf
SH		 2043 /* Estimate amount of sockets and try to allocate
2044 * huge buffer to read all the table at one read.
2045 * Limit it by 16MB though. The assumption is: as soon as
2046 * kernel was able to hold information about N connections,
2047 * it is able to give us some memory for snapshot.
2048 */
2049 if (1) {
2050 int guess = slabstat.socks+slabstat.tcp_syns;
2051 if (f->states&(1<<SS_TIME_WAIT))
2052 guess += slabstat.tcp_tws;
2053 if (guess > (16*1024*1024)/128)
2054 guess = (16*1024*1024)/128;
2055 guess *= 128;
2056 if (guess > bufsize)
2057 bufsize = guess;
2058 }
2059 while (bufsize >= 64*1024) {
2060 if ((buf = malloc(bufsize)) != NULL)
2061 break;
2062 bufsize /= 2;
2063 }
2064 if (buf == NULL) {
2065 errno = ENOMEM;
2066 return -1;
2067 }
2068
2069 if (f->families & (1<<AF_INET)) {
69cae645 2070 if ((fp = net_tcp_open()) == NULL)
aba5acdf 2071 goto outerr;
ab01dbbb
SH		 2072
2073 setbuffer(fp, buf, bufsize);
2074 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
aba5acdf 2075 goto outerr;
ab01dbbb 2076 fclose(fp);
aba5acdf
SH		 2077 }
2078
2079 if ((f->families & (1<<AF_INET6)) &&
69cae645 2080 (fp = net_tcp6_open()) != NULL) {
ab01dbbb
SH		 2081 setbuffer(fp, buf, bufsize);
2082 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
aba5acdf 2083 goto outerr;
ab01dbbb 2084 fclose(fp);
aba5acdf
SH		 2085 }
2086
2087 free(buf);
2088 return 0;
2089
2090outerr:
2091 do {
2092 int saved_errno = errno;
2093 if (buf)
2094 free(buf);
ab01dbbb
SH		 2095 if (fp)
2096 fclose(fp);
aba5acdf
SH		 2097 errno = saved_errno;
2098 return -1;
2099 } while (0);
2100}
2101
2102
d1f28cf1 2103static int dgram_show_line(char *line, const struct filter *f, int family)
aba5acdf
SH		 2104{
2105 struct tcpstat s;
2106 char *loc, *rem, *data;
2107 char opt[256];
2108 int n;
2109 char *p;
2110
2111 if ((p = strchr(line, ':')) == NULL)
2112 return -1;
2113 loc = p+2;
2114
2115 if ((p = strchr(loc, ':')) == NULL)
2116 return -1;
2117 p[5] = 0;
2118 rem = p+6;
2119
2120 if ((p = strchr(rem, ':')) == NULL)
2121 return -1;
2122 p[5] = 0;
2123 data = p+6;
2124
2125 do {
2126 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2127
2128 if (!(f->states & (1<<state)))
2129 return 0;
2130 } while (0);
2131
2132 s.local.family = s.remote.family = family;
2133 if (family == AF_INET) {
2134 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
2135 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
2136 s.local.bytelen = s.remote.bytelen = 4;
2137 } else {
2138 sscanf(loc, "%08x%08x%08x%08x:%x",
2139 s.local.data,
2140 s.local.data+1,
2141 s.local.data+2,
2142 s.local.data+3,
2143 &s.lport);
2144 sscanf(rem, "%08x%08x%08x%08x:%x",
2145 s.remote.data,
2146 s.remote.data+1,
2147 s.remote.data+2,
2148 s.remote.data+3,
2149 &s.rport);
2150 s.local.bytelen = s.remote.bytelen = 16;
2151 }
2152
2153 if (f->f && run_ssfilter(f->f, &s) == 0)
2154 return 0;
2155
2156 opt[0] = 0;
e7113c61 2157 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
aba5acdf
SH		 2158 &s.state, &s.wq, &s.rq,
2159 &s.uid, &s.ino,
2160 &s.refcnt, &s.sk, opt);
2161
2162 if (n < 9)
2163 opt[0] = 0;
2164
2165 if (netid_width)
2166 printf("%-*s ", netid_width, dg_proto);
2167 if (state_width)
2168 printf("%-*s ", state_width, sstate_name[s.state]);
2169
2170 printf("%-6d %-6d ", s.rq, s.wq);
2171
7c8a3cfb
FLB		 2172 formatted_print(&s.local, s.lport, 0);
2173 formatted_print(&s.remote, s.rport, 0);
aba5acdf 2174
116ac927
RH		 2175 char *buf = NULL;
2176
2177 if (show_proc_ctx || show_sock_ctx) {
2178 if (find_entry(s.ino, &buf,
2179 (show_proc_ctx & show_sock_ctx) ?
2180 PROC_SOCK_CTX : PROC_CTX) > 0) {
2181 printf(" users:(%s)", buf);
2182 free(buf);
2183 }
2184 } else if (show_users) {
2185 if (find_entry(s.ino, &buf, USERS) > 0) {
2186 printf(" users:(%s)", buf);
2187 free(buf);
2188 }
aba5acdf
SH		 2189 }
2190
2191 if (show_details) {
2192 if (s.uid)
2193 printf(" uid=%u", (unsigned)s.uid);
e7113c61 2194 printf(" ino=%u", s.ino);
aba5acdf
SH		 2195 printf(" sk=%llx", s.sk);
2196 if (opt[0])
2197 printf(" opt:\"%s\"", opt);
2198 }
2199 printf("\n");
2200
2201 return 0;
2202}
2203
2204
d1f28cf1 2205static int udp_show(struct filter *f)
aba5acdf 2206{
ab01dbbb 2207 FILE *fp = NULL;
aba5acdf 2208
346f8ca8
PE		 2209 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
2210 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
2211 return 0;
2212
aba5acdf
SH		 2213 dg_proto = UDP_PROTO;
2214
2215 if (f->families&(1<<AF_INET)) {
69cae645 2216 if ((fp = net_udp_open()) == NULL)
aba5acdf 2217 goto outerr;
ab01dbbb 2218 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
aba5acdf 2219 goto outerr;
ab01dbbb 2220 fclose(fp);
aba5acdf
SH		 2221 }
2222
2223 if ((f->families&(1<<AF_INET6)) &&
69cae645 2224 (fp = net_udp6_open()) != NULL) {
ab01dbbb 2225 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
aba5acdf 2226 goto outerr;
ab01dbbb 2227 fclose(fp);
aba5acdf
SH		 2228 }
2229 return 0;
2230
2231outerr:
2232 do {
2233 int saved_errno = errno;
ab01dbbb
SH		 2234 if (fp)
2235 fclose(fp);
aba5acdf
SH		 2236 errno = saved_errno;
2237 return -1;
2238 } while (0);
2239}
2240
d1f28cf1 2241static int raw_show(struct filter *f)
aba5acdf 2242{
ab01dbbb 2243 FILE *fp = NULL;
aba5acdf
SH		 2244
2245 dg_proto = RAW_PROTO;
2246
2247 if (f->families&(1<<AF_INET)) {
69cae645 2248 if ((fp = net_raw_open()) == NULL)
aba5acdf 2249 goto outerr;
ab01dbbb 2250 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
aba5acdf 2251 goto outerr;
ab01dbbb 2252 fclose(fp);
aba5acdf
SH		 2253 }
2254
2255 if ((f->families&(1<<AF_INET6)) &&
69cae645 2256 (fp = net_raw6_open()) != NULL) {
ab01dbbb 2257 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
aba5acdf 2258 goto outerr;
ab01dbbb 2259 fclose(fp);
aba5acdf
SH		 2260 }
2261 return 0;
2262
2263outerr:
2264 do {
2265 int saved_errno = errno;
ab01dbbb
SH		 2266 if (fp)
2267 fclose(fp);
aba5acdf
SH		 2268 errno = saved_errno;
2269 return -1;
2270 } while (0);
2271}
2272
2273
2274struct unixstat
2275{
2276 struct unixstat *next;
2277 int ino;
2278 int peer;
2279 int rq;
2280 int wq;
2281 int state;
2282 int type;
2283 char *name;
2284};
2285
2286
2287
2288int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
2289 SS_ESTABLISHED, SS_CLOSING };
2290
2291
2292#define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
2293
d1f28cf1 2294static void unix_list_free(struct unixstat *list)
aba5acdf
SH		 2295{
2296 while (list) {
2297 struct unixstat *s = list;
2298 list = list->next;
2299 if (s->name)
2300 free(s->name);
2301 free(s);
2302 }
2303}
2304
30b669d7
MY		 2305static const char *unix_netid_name(int type)
2306{
2307 const char *netid;
2308
2309 switch (type) {
2310 case SOCK_STREAM:
2311 netid = "u_str";
2312 break;
2313 case SOCK_SEQPACKET:
2314 netid = "u_seq";
2315 break;
2316 case SOCK_DGRAM:
2317 default:
2318 netid = "u_dgr";
2319 break;
2320 }
2321 return netid;
2322}
2323
d1f28cf1 2324static void unix_list_print(struct unixstat *list, struct filter *f)
aba5acdf
SH		 2325{
2326 struct unixstat *s;
2327 char *peer;
2328
2329 for (s = list; s; s = s->next) {
2330 if (!(f->states & (1<<s->state)))
2331 continue;
2332 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
2333 continue;
2334 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
2335 continue;
30b669d7
MY		 2336 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
2337 continue;
aba5acdf
SH		 2338
2339 peer = "*";
2340 if (s->peer) {
2341 struct unixstat *p;
2342 for (p = list; p; p = p->next) {
2343 if (s->peer == p->ino)
2344 break;
2345 }
2346 if (!p) {
2347 peer = "?";
2348 } else {
2349 peer = p->name ? : "*";
2350 }
2351 }
2352
2353 if (f->f) {
2354 struct tcpstat tst;
2355 tst.local.family = AF_UNIX;
2356 tst.remote.family = AF_UNIX;
2357 memcpy(tst.local.data, &s->name, sizeof(s->name));
2358 if (strcmp(peer, "*") == 0)
2359 memset(tst.remote.data, 0, sizeof(peer));
2360 else
ae665a52 2361 memcpy(tst.remote.data, &peer, sizeof(peer));
aba5acdf
SH		 2362 if (run_ssfilter(f->f, &tst) == 0)
2363 continue;
2364 }
2365
2366 if (netid_width)
ae665a52 2367 printf("%-*s ", netid_width,
30b669d7 2368 unix_netid_name(s->type));
aba5acdf
SH		 2369 if (state_width)
2370 printf("%-*s ", state_width, sstate_name[s->state]);
2371 printf("%-6d %-6d ", s->rq, s->wq);
2372 printf("%*s %-*d %*s %-*d",
2373 addr_width, s->name ? : "*", serv_width, s->ino,
2374 addr_width, peer, serv_width, s->peer);
116ac927
RH		 2375 char *buf = NULL;
2376
2377 if (show_proc_ctx || show_sock_ctx) {
2378 if (find_entry(s->ino, &buf,
2379 (show_proc_ctx & show_sock_ctx) ?
2380 PROC_SOCK_CTX : PROC_CTX) > 0) {
2381 printf(" users:(%s)", buf);
2382 free(buf);
2383 }
2384 } else if (show_users) {
2385 if (find_entry(s->ino, &buf, USERS) > 0) {
2386 printf(" users:(%s)", buf);
2387 free(buf);
2388 }
aba5acdf
SH		 2389 }
2390 printf("\n");
2391 }
2392}
2393
dfbaa90d
PE		 2394static int unix_show_sock(struct nlmsghdr *nlh, struct filter *f)
2395{
2396 struct unix_diag_msg *r = NLMSG_DATA(nlh);
2397 struct rtattr *tb[UNIX_DIAG_MAX+1];
2398 char name[128];
2399 int peer_ino;
defd61ca 2400 __u32 rqlen, wqlen;
dfbaa90d
PE		 2401
2402 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr*)(r+1),
2403 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2404
0d2e01c5
MY		 2405 if (r->udiag_type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
2406 return 0;
2407 if (r->udiag_type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
2408 return 0;
2409 if (r->udiag_type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
2410 return 0;
2411
dfbaa90d
PE		 2412 if (netid_width)
2413 printf("%-*s ", netid_width,
30b669d7 2414 unix_netid_name(r->udiag_type));
dfbaa90d
PE		 2415 if (state_width)
2416 printf("%-*s ", state_width, sstate_name[r->udiag_state]);
2417
defd61ca
HFS		 2418 if (tb[UNIX_DIAG_RQLEN]) {
2419 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
2420 rqlen = rql->udiag_rqueue;
2421 wqlen = rql->udiag_wqueue;
2422 } else {
dfbaa90d 2423 rqlen = 0;
defd61ca
HFS		 2424 wqlen = 0;
2425 }
dfbaa90d 2426
defd61ca 2427 printf("%-6u %-6u ", rqlen, wqlen);
dfbaa90d
PE		 2428
2429 if (tb[UNIX_DIAG_NAME]) {
2430 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
2431
2432 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
2433 name[len] = '\0';
2434 if (name[0] == '\0')
2435 name[0] = '@';
2436 } else
2437 sprintf(name, "*");
2438
2439 if (tb[UNIX_DIAG_PEER])
5048f9a0 2440 peer_ino = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
dfbaa90d
PE		 2441 else
2442 peer_ino = 0;
2443
2444 printf("%*s %-*d %*s %-*d",
2445 addr_width, name,
2446 serv_width, r->udiag_ino,
2447 addr_width, "*", /* FIXME */
2448 serv_width, peer_ino);
2449
116ac927
RH		 2450 char *buf = NULL;
2451
2452 if (show_proc_ctx || show_sock_ctx) {
2453 if (find_entry(r->udiag_ino, &buf,
2454 (show_proc_ctx & show_sock_ctx) ?
2455 PROC_SOCK_CTX : PROC_CTX) > 0) {
2456 printf(" users:(%s)", buf);
2457 free(buf);
2458 }
2459 } else if (show_users) {
2460 if (find_entry(r->udiag_ino, &buf, USERS) > 0) {
2461 printf(" users:(%s)", buf);
2462 free(buf);
2463 }
dfbaa90d
PE		 2464 }
2465
51ff9f24
HFS		 2466 if (show_mem) {
2467 printf("\n\t");
2468 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
2469 }
2470
5b816047
PE		 2471 if (show_details) {
2472 if (tb[UNIX_DIAG_SHUTDOWN]) {
2473 unsigned char mask;
2474 mask = *(__u8 *)RTA_DATA(tb[UNIX_DIAG_SHUTDOWN]);
2475 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2476 }
2477 }
2478
dfbaa90d
PE		 2479 printf("\n");
2480
2481 return 0;
2482}
2483
d8402b96
AV		 2484static int handle_netlink_request(struct filter *f, FILE *dump_fp,
2485 struct nlmsghdr *req, size_t size,
2486 int (* show_one_sock)(struct nlmsghdr *nlh, struct filter *f))
dfbaa90d
PE		 2487{
2488 int fd;
dfbaa90d 2489 char buf[8192];
dfbaa90d
PE		 2490
2491 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
2492 return -1;
2493
d8402b96 2494 if (send(fd, req, size, 0) < 0) {
a3fd8e58 2495 close(fd);
dfbaa90d 2496 return -1;
a3fd8e58 2497 }
dfbaa90d 2498
dfbaa90d 2499 while (1) {
2728f598 2500 ssize_t status;
dfbaa90d 2501 struct nlmsghdr *h;
2728f598
SH		 2502 struct sockaddr_nl nladdr;
2503 socklen_t slen = sizeof(nladdr);
dfbaa90d 2504
2728f598
SH		 2505 status = recvfrom(fd, buf, sizeof(buf), 0,
2506 (struct sockaddr *) &nladdr, &slen);
dfbaa90d
PE		 2507 if (status < 0) {
2508 if (errno == EINTR)
2509 continue;
2510 perror("OVERRUN");
2511 continue;
2512 }
2513 if (status == 0) {
2514 fprintf(stderr, "EOF on netlink\n");
2728f598 2515 goto close_it;
dfbaa90d
PE		 2516 }
2517
2518 if (dump_fp)
2519 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
2520
2521 h = (struct nlmsghdr*)buf;
2522 while (NLMSG_OK(h, status)) {
2523 int err;
2524
2525 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
2526 h->nlmsg_seq != 123456)
2527 goto skip_it;
2528
2728f598
SH		 2529 if (h->nlmsg_type == NLMSG_DONE)
2530 goto close_it;
2531
dfbaa90d
PE		 2532 if (h->nlmsg_type == NLMSG_ERROR) {
2533 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
2534 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2535 fprintf(stderr, "ERROR truncated\n");
2536 } else {
2537 errno = -err->error;
a3fd8e58 2538 if (errno != ENOENT)
d8402b96 2539 fprintf(stderr, "DIAG answers %d\n", errno);
dfbaa90d 2540 }
a3fd8e58
ED		 2541 close(fd);
2542 return -1;
dfbaa90d
PE		 2543 }
2544 if (!dump_fp) {
d8402b96 2545 err = show_one_sock(h, f);
a3fd8e58
ED		 2546 if (err < 0) {
2547 close(fd);
dfbaa90d 2548 return err;
a3fd8e58 2549 }
dfbaa90d
PE		 2550 }
2551
2552skip_it:
2553 h = NLMSG_NEXT(h, status);
2554 }
2728f598 2555
dfbaa90d 2556 if (status) {
2728f598 2557 fprintf(stderr, "!!!Remnant of size %zd\n", status);
dfbaa90d
PE		 2558 exit(1);
2559 }
2560 }
2728f598
SH		 2561
2562close_it:
a3fd8e58 2563 close(fd);
dfbaa90d
PE		 2564 return 0;
2565}
2566
d8402b96
AV		 2567static int unix_show_netlink(struct filter *f, FILE *dump_fp)
2568{
2569 struct {
2570 struct nlmsghdr nlh;
2571 struct unix_diag_req r;
2572 } req;
2573
2574 memset(&req, 0, sizeof(req));
2575 req.nlh.nlmsg_len = sizeof(req);
2576 req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY;
2577 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
2578 req.nlh.nlmsg_seq = 123456;
2579
2580 req.r.sdiag_family = AF_UNIX;
2581 req.r.udiag_states = f->states;
2582 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
2583 if (show_mem)
2584 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
2585
2586 return handle_netlink_request(f, dump_fp, &req.nlh,
2587 sizeof(req), unix_show_sock);
2588}
2589
d1f28cf1 2590static int unix_show(struct filter *f)
aba5acdf
SH		 2591{
2592 FILE *fp;
2593 char buf[256];
2594 char name[128];
2595 int newformat = 0;
2596 int cnt;
2597 struct unixstat *list = NULL;
2598
dfbaa90d
PE		 2599 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
2600 && unix_show_netlink(f, NULL) == 0)
2601 return 0;
2602
ab01dbbb 2603 if ((fp = net_unix_open()) == NULL)
aba5acdf
SH		 2604 return -1;
2605 fgets(buf, sizeof(buf)-1, fp);
2606
ae665a52 2607 if (memcmp(buf, "Peer", 4) == 0)
aba5acdf
SH		 2608 newformat = 1;
2609 cnt = 0;
2610
2611 while (fgets(buf, sizeof(buf)-1, fp)) {
2612 struct unixstat *u, **insp;
2613 int flags;
2614
2615 if (!(u = malloc(sizeof(*u))))
2616 break;
2617 u->name = NULL;
2618
2619 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
2620 &u->peer, &u->rq, &u->wq, &flags, &u->type,
2621 &u->state, &u->ino, name) < 8)
2622 name[0] = 0;
2623
2624 if (flags&(1<<16)) {
2625 u->state = SS_LISTEN;
2626 } else {
2627 u->state = unix_state_map[u->state-1];
2628 if (u->type == SOCK_DGRAM &&
2629 u->state == SS_CLOSE &&
2630 u->peer)
2631 u->state = SS_ESTABLISHED;
2632 }
2633
2634 if (!newformat) {
2635 u->peer = 0;
2636 u->rq = 0;
2637 u->wq = 0;
2638 }
2639
2640 insp = &list;
2641 while (*insp) {
2642 if (u->type < (*insp)->type ||
2643 (u->type == (*insp)->type &&
2644 u->ino < (*insp)->ino))
2645 break;
2646 insp = &(*insp)->next;
2647 }
2648 u->next = *insp;
2649 *insp = u;
2650
2651 if (name[0]) {
2652 if ((u->name = malloc(strlen(name)+1)) == NULL)
2653 break;
2654 strcpy(u->name, name);
2655 }
2656 if (++cnt > MAX_UNIX_REMEMBER) {
2657 unix_list_print(list, f);
2658 unix_list_free(list);
2659 list = NULL;
2660 cnt = 0;
2661 }
2662 }
a3fd8e58 2663 fclose(fp);
aba5acdf
SH		 2664 if (list) {
2665 unix_list_print(list, f);
2666 unix_list_free(list);
2667 list = NULL;
2668 cnt = 0;
2669 }
2670
2671 return 0;
2672}
2673
372c30d2
ND		 2674static int packet_show_sock(struct nlmsghdr *nlh, struct filter *f)
2675{
2676 struct packet_diag_msg *r = NLMSG_DATA(nlh);
2677 struct rtattr *tb[PACKET_DIAG_MAX+1];
2678 __u32 rq;
2679
2680 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr*)(r+1),
2681 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2682
2683 /* use /proc/net/packet if all info are not available */
2684 if (!tb[PACKET_DIAG_MEMINFO])
2685 return -1;
2686
2687 if (netid_width)
2688 printf("%-*s ", netid_width,
2689 r->pdiag_type == SOCK_RAW ? "p_raw" : "p_dgr");
2690 if (state_width)
2691 printf("%-*s ", state_width, "UNCONN");
2692
2693 if (tb[PACKET_DIAG_MEMINFO]) {
2694 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
2695
2696 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
2697 } else
2698 rq = 0;
2699 printf("%-6d %-6d ", rq, 0);
2700
2701 if (r->pdiag_num == 3) {
2702 printf("%*s:", addr_width, "*");
2703 } else {
2704 char tb2[16];
2705 printf("%*s:", addr_width,
2706 ll_proto_n2a(htons(r->pdiag_num), tb2, sizeof(tb2)));
2707 }
2708 if (tb[PACKET_DIAG_INFO]) {
2709 struct packet_diag_info *pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
2710
2711 if (pinfo->pdi_index == 0)
2712 printf("%-*s ", serv_width, "*");
2713 else
2714 printf("%-*s ", serv_width, xll_index_to_name(pinfo->pdi_index));
2715 } else
2716 printf("%-*s ", serv_width, "*");
2717
2718 printf("%*s*%-*s",
2719 addr_width, "", serv_width, "");
2720
116ac927
RH		 2721 char *buf = NULL;
2722
2723 if (show_proc_ctx || show_sock_ctx) {
2724 if (find_entry(r->pdiag_ino, &buf,
2725 (show_proc_ctx & show_sock_ctx) ?
2726 PROC_SOCK_CTX : PROC_CTX) > 0) {
2727 printf(" users:(%s)", buf);
2728 free(buf);
2729 }
2730 } else if (show_users) {
2731 if (find_entry(r->pdiag_ino, &buf, USERS) > 0) {
2732 printf(" users:(%s)", buf);
2733 free(buf);
2734 }
372c30d2 2735 }
116ac927 2736
372c30d2
ND		 2737 if (show_details) {
2738 __u32 uid = 0;
2739
2740 if (tb[PACKET_DIAG_UID])
2741 uid = *(__u32 *)RTA_DATA(tb[PACKET_DIAG_UID]);
2742
2743 printf(" ino=%u uid=%u sk=", r->pdiag_ino, uid);
2744 if (r->pdiag_cookie[1] != 0)
2745 printf("%08x", r->pdiag_cookie[1]);
2746 printf("%08x", r->pdiag_cookie[0]);
2747 }
2748
2749 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
2750 struct sock_filter *fil =
2751 RTA_DATA(tb[PACKET_DIAG_FILTER]);
2752 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
2753 sizeof(struct sock_filter);
2754
2755 printf("\n\tbpf filter (%d): ", num);
2756 while (num) {
2757 printf(" 0x%02x %u %u %u,",
2758 fil->code, fil->jt, fil->jf, fil->k);
2759 num--;
2760 fil++;
2761 }
2762 }
2763 printf("\n");
2764 return 0;
2765}
2766
2767static int packet_show_netlink(struct filter *f, FILE *dump_fp)
2768{
2769 int fd;
2770 struct {
2771 struct nlmsghdr nlh;
2772 struct packet_diag_req r;
2773 } req;
2774 char buf[8192];
2775
2776 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
2777 return -1;
2778
2779 memset(&req, 0, sizeof(req));
2780 req.nlh.nlmsg_len = sizeof(req);
2781 req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY;
2782 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
2783 req.nlh.nlmsg_seq = 123456;
2784
2785 req.r.sdiag_family = AF_PACKET;
2786 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO | PACKET_SHOW_FILTER;
2787
2788 if (send(fd, &req, sizeof(req), 0) < 0) {
2789 close(fd);
2790 return -1;
2791 }
2792
2793 while (1) {
2794 ssize_t status;
2795 struct nlmsghdr *h;
2796 struct sockaddr_nl nladdr;
2797 socklen_t slen = sizeof(nladdr);
2798
2799 status = recvfrom(fd, buf, sizeof(buf), 0,
2800 (struct sockaddr *) &nladdr, &slen);
2801 if (status < 0) {
2802 if (errno == EINTR)
2803 continue;
2804 perror("OVERRUN");
2805 continue;
2806 }
2807 if (status == 0) {
2808 fprintf(stderr, "EOF on netlink\n");
2809 goto close_it;
2810 }
2811
2812 if (dump_fp)
2813 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
2814
2815 h = (struct nlmsghdr*)buf;
2816 while (NLMSG_OK(h, status)) {
2817 int err;
2818
2819 if (h->nlmsg_seq != 123456)
2820 goto skip_it;
2821
2822 if (h->nlmsg_type == NLMSG_DONE)
2823 goto close_it;
2824
2825 if (h->nlmsg_type == NLMSG_ERROR) {
2826 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
2827 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2828 fprintf(stderr, "ERROR truncated\n");
2829 } else {
2830 errno = -err->error;
2831 if (errno != ENOENT)
2832 fprintf(stderr, "UDIAG answers %d\n", errno);
2833 }
2834 close(fd);
2835 return -1;
2836 }
2837 if (!dump_fp) {
2838 err = packet_show_sock(h, f);
2839 if (err < 0) {
2840 close(fd);
2841 return err;
2842 }
2843 }
2844
2845skip_it:
2846 h = NLMSG_NEXT(h, status);
2847 }
2848
2849 if (status) {
2850 fprintf(stderr, "!!!Remnant of size %zd\n", status);
2851 exit(1);
2852 }
2853 }
2854
2855close_it:
2856 close(fd);
2857 return 0;
2858}
2859
aba5acdf 2860
d1f28cf1 2861static int packet_show(struct filter *f)
aba5acdf
SH		 2862{
2863 FILE *fp;
2864 char buf[256];
2865 int type;
2866 int prot;
2867 int iface;
2868 int state;
2869 int rq;
2870 int uid;
2871 int ino;
2872 unsigned long long sk;
2873
2874 if (!(f->states & (1<<SS_CLOSE)))
2875 return 0;
2876
372c30d2
ND		 2877 if (packet_show_netlink(f, NULL) == 0)
2878 return 0;
2879
ab01dbbb 2880 if ((fp = net_packet_open()) == NULL)
aba5acdf
SH		 2881 return -1;
2882 fgets(buf, sizeof(buf)-1, fp);
2883
2884 while (fgets(buf, sizeof(buf)-1, fp)) {
2885 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2886 &sk,
2887 &type, &prot, &iface, &state,
2888 &rq, &uid, &ino);
2889
2890 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2891 continue;
2892 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2893 continue;
2894 if (f->f) {
2895 struct tcpstat tst;
2896 tst.local.family = AF_PACKET;
2897 tst.remote.family = AF_PACKET;
2898 tst.rport = 0;
2899 tst.lport = iface;
2900 tst.local.data[0] = prot;
2901 tst.remote.data[0] = 0;
2902 if (run_ssfilter(f->f, &tst) == 0)
2903 continue;
2904 }
2905
2906 if (netid_width)
ae665a52 2907 printf("%-*s ", netid_width,
aba5acdf
SH		 2908 type == SOCK_RAW ? "p_raw" : "p_dgr");
2909 if (state_width)
2910 printf("%-*s ", state_width, "UNCONN");
2911 printf("%-6d %-6d ", rq, 0);
2912 if (prot == 3) {
2913 printf("%*s:", addr_width, "*");
2914 } else {
2915 char tb[16];
ae665a52 2916 printf("%*s:", addr_width,
aba5acdf
SH		 2917 ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2918 }
2919 if (iface == 0) {
2920 printf("%-*s ", serv_width, "*");
2921 } else {
2922 printf("%-*s ", serv_width, xll_index_to_name(iface));
2923 }
2924 printf("%*s*%-*s",
2925 addr_width, "", serv_width, "");
2926
116ac927
RH		 2927 char *buf = NULL;
2928
2929 if (show_proc_ctx || show_sock_ctx) {
2930 if (find_entry(ino, &buf,
2931 (show_proc_ctx & show_sock_ctx) ?
2932 PROC_SOCK_CTX : PROC_CTX) > 0) {
2933 printf(" users:(%s)", buf);
2934 free(buf);
2935 }
2936 } else if (show_users) {
2937 if (find_entry(ino, &buf, USERS) > 0) {
2938 printf(" users:(%s)", buf);
2939 free(buf);
2940 }
aba5acdf 2941 }
116ac927 2942
aba5acdf
SH		 2943 if (show_details) {
2944 printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2945 }
2946 printf("\n");
2947 }
2948
2949 return 0;
2950}
2951
129709ae
AV		 2952static void netlink_show_one(struct filter *f,
2953 int prot, int pid, unsigned groups,
f271fe01 2954 int state, int dst_pid, unsigned dst_group,
129709ae
AV		 2955 int rq, int wq,
2956 unsigned long long sk, unsigned long long cb)
2957{
2958 if (f->f) {
2959 struct tcpstat tst;
2960 tst.local.family = AF_NETLINK;
2961 tst.remote.family = AF_NETLINK;
2962 tst.rport = -1;
2963 tst.lport = pid;
2964 tst.local.data[0] = prot;
2965 tst.remote.data[0] = 0;
2966 if (run_ssfilter(f->f, &tst) == 0)
2967 return;
2968 }
2969
2970 if (netid_width)
2971 printf("%-*s ", netid_width, "nl");
2972 if (state_width)
2973 printf("%-*s ", state_width, "UNCONN");
2974 printf("%-6d %-6d ", rq, wq);
2975 if (resolve_services && prot == 0)
2976 printf("%*s:", addr_width, "rtnl");
2977 else if (resolve_services && prot == 3)
2978 printf("%*s:", addr_width, "fw");
2979 else if (resolve_services && prot == 4)
2980 printf("%*s:", addr_width, "tcpdiag");
2981 else
2982 printf("%*d:", addr_width, prot);
2983 if (pid == -1) {
2984 printf("%-*s ", serv_width, "*");
2985 } else if (resolve_services) {
2986 int done = 0;
2987 if (!pid) {
2988 done = 1;
2989 printf("%-*s ", serv_width, "kernel");
2990 } else if (pid > 0) {
2991 char procname[64];
2992 FILE *fp;
2993 sprintf(procname, "%s/%d/stat",
2994 getenv("PROC_ROOT") ? : "/proc", pid);
2995 if ((fp = fopen(procname, "r")) != NULL) {
2996 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2997 sprintf(procname+strlen(procname), "/%d", pid);
2998 printf("%-*s ", serv_width, procname);
2999 done = 1;
3000 }
3001 fclose(fp);
3002 }
3003 }
3004 if (!done)
3005 printf("%-*d ", serv_width, pid);
3006 } else {
3007 printf("%-*d ", serv_width, pid);
3008 }
f271fe01
AV		 3009
3010 if (state == NETLINK_CONNECTED) {
3011 printf("%*d:%-*d",
3012 addr_width, dst_group, serv_width, dst_pid);
3013 } else {
3014 printf("%*s*%-*s",
3015 addr_width, "", serv_width, "");
3016 }
129709ae 3017
116ac927
RH		 3018 char *pid_context = NULL;
3019 if (show_proc_ctx) {
3020 /* The pid value will either be:
3021 * 0 if destination kernel - show kernel initial context.
3022 * A valid process pid - use getpidcon.
3023 * A unique value allocated by the kernel or netlink user
3024 * to the process - show context as "not available".
3025 */
3026 if (!pid)
3027 security_get_initial_context("kernel", &pid_context);
3028 else if (pid > 0)
3029 getpidcon(pid, &pid_context);
3030
3031 if (pid_context != NULL) {
3032 printf("proc_ctx=%-*s ", serv_width, pid_context);
3033 free(pid_context);
3034 } else {
3035 printf("proc_ctx=%-*s ", serv_width, "unavailable");
3036 }
3037 }
3038
129709ae
AV		 3039 if (show_details) {
3040 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
3041 }
3042 printf("\n");
3043
3044 return;
3045}
3046
ecb928c8
AV		 3047static int netlink_show_sock(struct nlmsghdr *nlh, struct filter *f)
3048{
3049 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
3050 struct rtattr *tb[NETLINK_DIAG_MAX+1];
3051 int rq = 0, wq = 0;
3052 unsigned long groups = 0;
3053
3054 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr*)(r+1),
3055 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3056
3057 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
3058 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
3059
3060 if (tb[NETLINK_DIAG_MEMINFO]) {
3061 const __u32 *skmeminfo;
3062 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
3063
3064 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3065 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
3066 }
3067
3068 netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
3069 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
3070 rq, wq, 0, 0);
3071
3072 if (show_mem) {
3073 printf("\t");
3074 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
3075 printf("\n");
3076 }
3077
3078 return 0;
3079}
3080
3081static int netlink_show_netlink(struct filter *f, FILE *dump_fp)
3082{
3083 struct {
3084 struct nlmsghdr nlh;
3085 struct netlink_diag_req r;
3086 } req;
3087
3088 memset(&req, 0, sizeof(req));
3089 req.nlh.nlmsg_len = sizeof(req);
3090 req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY;
3091 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
3092 req.nlh.nlmsg_seq = 123456;
3093
3094 req.r.sdiag_family = AF_NETLINK;
3095 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
3096 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
3097
3098 return handle_netlink_request(f, dump_fp, &req.nlh,
3099 sizeof(req), netlink_show_sock);
3100}
3101
d1f28cf1 3102static int netlink_show(struct filter *f)
aba5acdf
SH		 3103{
3104 FILE *fp;
3105 char buf[256];
3106 int prot, pid;
3107 unsigned groups;
3108 int rq, wq, rc;
3109 unsigned long long sk, cb;
3110
3111 if (!(f->states & (1<<SS_CLOSE)))
3112 return 0;
3113
129709ae
AV		 3114 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
3115 netlink_show_netlink(f, NULL) == 0)
3116 return 0;
3117
ab01dbbb 3118 if ((fp = net_netlink_open()) == NULL)
aba5acdf
SH		 3119 return -1;
3120 fgets(buf, sizeof(buf)-1, fp);
3121
3122 while (fgets(buf, sizeof(buf)-1, fp)) {
3123 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
3124 &sk,
3125 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
3126
f271fe01 3127 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
aba5acdf
SH		 3128 }
3129
3130 return 0;
3131}
3132
3133struct snmpstat
3134{
3135 int tcp_estab;
3136};
3137
d1f28cf1 3138static int get_snmp_int(char *proto, char *key, int *result)
aba5acdf
SH		 3139{
3140 char buf[1024];
3141 FILE *fp;
3142 int protolen = strlen(proto);
3143 int keylen = strlen(key);
3144
3145 *result = 0;
3146
ab01dbbb 3147 if ((fp = net_snmp_open()) == NULL)
aba5acdf
SH		 3148 return -1;
3149
3150 while (fgets(buf, sizeof(buf), fp) != NULL) {
3151 char *p = buf;
3152 int pos = 0;
3153 if (memcmp(buf, proto, protolen))
3154 continue;
3155 while ((p = strchr(p, ' ')) != NULL) {
3156 pos++;
3157 p++;
3158 if (memcmp(p, key, keylen) == 0 &&
3159 (p[keylen] == ' ' || p[keylen] == '\n'))
3160 break;
3161 }
3162 if (fgets(buf, sizeof(buf), fp) == NULL)
3163 break;
3164 if (memcmp(buf, proto, protolen))
3165 break;
3166 p = buf;
3167 while ((p = strchr(p, ' ')) != NULL) {
3168 p++;
3169 if (--pos == 0) {
3170 sscanf(p, "%d", result);
3171 fclose(fp);
3172 return 0;
3173 }
3174 }
3175 }
3176
3177 fclose(fp);
3178 errno = ESRCH;
3179 return -1;
3180}
3181
3182
3183/* Get stats from sockstat */
3184
3185struct sockstat
3186{
3187 int socks;
3188 int tcp_mem;
3189 int tcp_total;
3190 int tcp_orphans;
3191 int tcp_tws;
3192 int tcp4_hashed;
3193 int udp4;
3194 int raw4;
3195 int frag4;
3196 int frag4_mem;
3197 int tcp6_hashed;
3198 int udp6;
3199 int raw6;
3200 int frag6;
3201 int frag6_mem;
3202};
3203
3204static void get_sockstat_line(char *line, struct sockstat *s)
3205{
3206 char id[256], rem[256];
3207
3208 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
3209 return;
3210
3211 if (strcmp(id, "sockets:") == 0)
3212 sscanf(rem, "%*s%d", &s->socks);
3213 else if (strcmp(id, "UDP:") == 0)
3214 sscanf(rem, "%*s%d", &s->udp4);
3215 else if (strcmp(id, "UDP6:") == 0)
3216 sscanf(rem, "%*s%d", &s->udp6);
3217 else if (strcmp(id, "RAW:") == 0)
3218 sscanf(rem, "%*s%d", &s->raw4);
3219 else if (strcmp(id, "RAW6:") == 0)
3220 sscanf(rem, "%*s%d", &s->raw6);
3221 else if (strcmp(id, "TCP6:") == 0)
3222 sscanf(rem, "%*s%d", &s->tcp6_hashed);
3223 else if (strcmp(id, "FRAG:") == 0)
3224 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
3225 else if (strcmp(id, "FRAG6:") == 0)
3226 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
3227 else if (strcmp(id, "TCP:") == 0)
3228 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
3229 &s->tcp4_hashed,
3230 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
3231}
3232
d1f28cf1 3233static int get_sockstat(struct sockstat *s)
aba5acdf
SH		 3234{
3235 char buf[256];
3236 FILE *fp;
3237
3238 memset(s, 0, sizeof(*s));
3239
ab01dbbb 3240 if ((fp = net_sockstat_open()) == NULL)
aba5acdf
SH		 3241 return -1;
3242 while(fgets(buf, sizeof(buf), fp) != NULL)
3243 get_sockstat_line(buf, s);
3244 fclose(fp);
3245
ab01dbbb 3246 if ((fp = net_sockstat6_open()) == NULL)
aba5acdf
SH		 3247 return 0;
3248 while(fgets(buf, sizeof(buf), fp) != NULL)
3249 get_sockstat_line(buf, s);
3250 fclose(fp);
3251
3252 return 0;
3253}
3254
d1f28cf1 3255static int print_summary(void)
aba5acdf
SH		 3256{
3257 struct sockstat s;
3258 struct snmpstat sn;
3259
3260 if (get_sockstat(&s) < 0)
3261 perror("ss: get_sockstat");
3262 if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
3263 perror("ss: get_snmpstat");
3264
3265 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
3266
3267 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
3268 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
3269 sn.tcp_estab,
3270 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
3271 s.tcp_orphans,
3272 slabstat.tcp_syns,
3273 s.tcp_tws, slabstat.tcp_tws,
3274 slabstat.tcp_ports
3275 );
3276
3277 printf("\n");
3278 printf("Transport Total IP IPv6\n");
3279 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
3280 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
3281 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
3282 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
ae665a52 3283 printf("INET %-9d %-9d %-9d\n",
aba5acdf
SH		 3284 s.raw4+s.udp4+s.tcp4_hashed+
3285 s.raw6+s.udp6+s.tcp6_hashed,
3286 s.raw4+s.udp4+s.tcp4_hashed,
3287 s.raw6+s.udp6+s.tcp6_hashed);
3288 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
3289
3290 printf("\n");
3291
3292 return 0;
3293}
3294
7a96e199 3295static void _usage(FILE *dest)
aba5acdf 3296{
7a96e199 3297 fprintf(dest,
aba5acdf
SH		 3298"Usage: ss [ OPTIONS ]\n"
3299" ss [ OPTIONS ] [ FILTER ]\n"
ab61159a
SH		 3300" -h, --help this message\n"
3301" -V, --version output version information\n"
3302" -n, --numeric don't resolve service names\n"
3303" -r, --resolve resolve host names\n"
3304" -a, --all display all sockets\n"
3305" -l, --listening display listening sockets\n"
3306" -o, --options show timer information\n"
3307" -e, --extended show detailed socket information\n"
3308" -m, --memory show socket memory usage\n"
3309" -p, --processes show process using socket\n"
3310" -i, --info show internal TCP information\n"
3311" -s, --summary show socket usage summary\n"
b0f01cf6 3312" -b, --bpf show bpf filter socket information\n"
116ac927
RH		 3313" -Z, --context display process SELinux security contexts\n"
3314" -z, --contexts display process and socket SELinux security contexts\n"
ab61159a
SH		 3315"\n"
3316" -4, --ipv4 display only IP version 4 sockets\n"
3317" -6, --ipv6 display only IP version 6 sockets\n"
3318" -0, --packet display PACKET sockets\n"
3319" -t, --tcp display only TCP sockets\n"
3320" -u, --udp display only UDP sockets\n"
351efcde 3321" -d, --dccp display only DCCP sockets\n"
ab61159a
SH		 3322" -w, --raw display only RAW sockets\n"
3323" -x, --unix display only Unix domain sockets\n"
3324" -f, --family=FAMILY display sockets of type FAMILY\n"
3325"\n"
583de149 3326" -A, --query=QUERY, --socket=QUERY\n"
56dee73e 3327" QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
ab61159a 3328"\n"
583de149 3329" -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
ab61159a 3330" -F, --filter=FILE read filter information from FILE\n"
aba5acdf 3331" FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
ab61159a 3332 );
7a96e199
AH		 3333}
3334
3335static void help(void) __attribute__((noreturn));
3336static void help(void)
3337{
3338 _usage(stdout);
3339 exit(0);
3340}
3341
3342static void usage(void) __attribute__((noreturn));
3343static void usage(void)
3344{
3345 _usage(stderr);
aba5acdf
SH		 3346 exit(-1);
3347}
3348
3349
d1f28cf1 3350static int scan_state(const char *state)
aba5acdf
SH		 3351{
3352 int i;
3353 if (strcasecmp(state, "close") == 0 ||
3354 strcasecmp(state, "closed") == 0)
3355 return (1<<SS_CLOSE);
3356 if (strcasecmp(state, "syn-rcv") == 0)
3357 return (1<<SS_SYN_RECV);
1a5bad5a 3358 if (strcasecmp(state, "established") == 0)
aba5acdf
SH		 3359 return (1<<SS_ESTABLISHED);
3360 if (strcasecmp(state, "all") == 0)
3361 return SS_ALL;
3362 if (strcasecmp(state, "connected") == 0)
3363 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
1a5bad5a 3364 if (strcasecmp(state, "synchronized") == 0)
aba5acdf
SH		 3365 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
3366 if (strcasecmp(state, "bucket") == 0)
3367 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
3368 if (strcasecmp(state, "big") == 0)
3369 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
3370 for (i=0; i<SS_MAX; i++) {
1a5bad5a 3371 if (strcasecmp(state, sstate_namel[i]) == 0)
aba5acdf
SH		 3372 return (1<<i);
3373 }
3374 return 0;
3375}
3376
ab61159a
SH		 3377static const struct option long_opts[] = {
3378 { "numeric", 0, 0, 'n' },
3379 { "resolve", 0, 0, 'r' },
3380 { "options", 0, 0, 'o' },
3381 { "extended", 0, 0, 'e' },
3382 { "memory", 0, 0, 'm' },
3383 { "info", 0, 0, 'i' },
3384 { "processes", 0, 0, 'p' },
372c30d2 3385 { "bpf", 0, 0, 'b' },
351efcde 3386 { "dccp", 0, 0, 'd' },
ab61159a
SH		 3387 { "tcp", 0, 0, 't' },
3388 { "udp", 0, 0, 'u' },
3389 { "raw", 0, 0, 'w' },
3390 { "unix", 0, 0, 'x' },
3391 { "all", 0, 0, 'a' },
3392 { "listening", 0, 0, 'l' },
3393 { "ipv4", 0, 0, '4' },
3394 { "ipv6", 0, 0, '6' },
3395 { "packet", 0, 0, '0' },
3396 { "family", 1, 0, 'f' },
3397 { "socket", 1, 0, 'A' },
583de149 3398 { "query", 1, 0, 'A' },
c3f346b0 3399 { "summary", 0, 0, 's' },
583de149 3400 { "diag", 1, 0, 'D' },
ab61159a
SH		 3401 { "filter", 1, 0, 'F' },
3402 { "version", 0, 0, 'V' },
3403 { "help", 0, 0, 'h' },
116ac927
RH		 3404 { "context", 0, 0, 'Z' },
3405 { "contexts", 0, 0, 'z' },
ab61159a 3406 { 0 }
ae665a52 3407
ab61159a
SH		 3408};
3409
aba5acdf
SH		 3410int main(int argc, char *argv[])
3411{
3412 int do_default = 1;
3413 int saw_states = 0;
3414 int saw_query = 0;
3415 int do_summary = 0;
7d105b56 3416 const char *dump_tcpdiag = NULL;
aba5acdf
SH		 3417 FILE *filter_fp = NULL;
3418 int ch;
3419
3420 memset(&current_filter, 0, sizeof(current_filter));
3421
3422 current_filter.states = default_filter.states;
3423
116ac927 3424 while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spbf:miA:D:F:vVzZ",
ab61159a 3425 long_opts, NULL)) != EOF) {
aba5acdf
SH		 3426 switch(ch) {
3427 case 'n':
3428 resolve_services = 0;
3429 break;
3430 case 'r':
3431 resolve_hosts = 1;
3432 break;
3433 case 'o':
3434 show_options = 1;
3435 break;
3436 case 'e':
3437 show_options = 1;
3438 show_details++;
3439 break;
3440 case 'm':
3441 show_mem = 1;
3442 break;
3443 case 'i':
3444 show_tcpinfo = 1;
3445 break;
3446 case 'p':
3447 show_users++;
fbc0f876 3448 user_ent_hash_build();
aba5acdf 3449 break;
372c30d2
ND		 3450 case 'b':
3451 show_options = 1;
3452 show_bpf++;
3453 break;
351efcde
SH		 3454 case 'd':
3455 current_filter.dbs |= (1<<DCCP_DB);
3456 do_default = 0;
3457 break;
aba5acdf
SH		 3458 case 't':
3459 current_filter.dbs |= (1<<TCP_DB);
3460 do_default = 0;
3461 break;
3462 case 'u':
3463 current_filter.dbs |= (1<<UDP_DB);
3464 do_default = 0;
3465 break;
3466 case 'w':
3467 current_filter.dbs |= (1<<RAW_DB);
3468 do_default = 0;
3469 break;
3470 case 'x':
3471 current_filter.dbs |= UNIX_DBM;
3472 do_default = 0;
3473 break;
3474 case 'a':
3475 current_filter.states = SS_ALL;
3476 break;
3477 case 'l':
16963ce6 3478 current_filter.states = (1<<SS_LISTEN) | (1<<SS_CLOSE);
aba5acdf
SH		 3479 break;
3480 case '4':
3481 preferred_family = AF_INET;
3482 break;
3483 case '6':
3484 preferred_family = AF_INET6;
3485 break;
3486 case '0':
3487 preferred_family = AF_PACKET;
3488 break;
3489 case 'f':
3490 if (strcmp(optarg, "inet") == 0)
3491 preferred_family = AF_INET;
3492 else if (strcmp(optarg, "inet6") == 0)
3493 preferred_family = AF_INET6;
3494 else if (strcmp(optarg, "link") == 0)
3495 preferred_family = AF_PACKET;
3496 else if (strcmp(optarg, "unix") == 0)
3497 preferred_family = AF_UNIX;
3498 else if (strcmp(optarg, "netlink") == 0)
3499 preferred_family = AF_NETLINK;
3500 else if (strcmp(optarg, "help") == 0)
7a96e199 3501 help();
aba5acdf
SH		 3502 else {
3503 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
3504 usage();
3505 }
3506 break;
3507 case 'A':
3508 {
3509 char *p, *p1;
3510 if (!saw_query) {
3511 current_filter.dbs = 0;
3512 saw_query = 1;
3513 do_default = 0;
3514 }
3515 p = p1 = optarg;
3516 do {
3517 if ((p1 = strchr(p, ',')) != NULL)
ae665a52 3518 *p1 = 0;
aba5acdf
SH		 3519 if (strcmp(p, "all") == 0) {
3520 current_filter.dbs = ALL_DB;
3521 } else if (strcmp(p, "inet") == 0) {
351efcde 3522 current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
aba5acdf
SH		 3523 } else if (strcmp(p, "udp") == 0) {
3524 current_filter.dbs |= (1<<UDP_DB);
351efcde
SH		 3525 } else if (strcmp(p, "dccp") == 0) {
3526 current_filter.dbs |= (1<<DCCP_DB);
aba5acdf
SH		 3527 } else if (strcmp(p, "tcp") == 0) {
3528 current_filter.dbs |= (1<<TCP_DB);
3529 } else if (strcmp(p, "raw") == 0) {
3530 current_filter.dbs |= (1<<RAW_DB);
3531 } else if (strcmp(p, "unix") == 0) {
3532 current_filter.dbs |= UNIX_DBM;
1a5bad5a 3533 } else if (strcasecmp(p, "unix_stream") == 0 ||
aba5acdf
SH		 3534 strcmp(p, "u_str") == 0) {
3535 current_filter.dbs |= (1<<UNIX_ST_DB);
1a5bad5a 3536 } else if (strcasecmp(p, "unix_dgram") == 0 ||
aba5acdf
SH		 3537 strcmp(p, "u_dgr") == 0) {
3538 current_filter.dbs |= (1<<UNIX_DG_DB);
30b669d7
MY		 3539 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
3540 strcmp(p, "u_seq") == 0) {
3541 current_filter.dbs |= (1<<UNIX_SQ_DB);
aba5acdf
SH		 3542 } else if (strcmp(p, "packet") == 0) {
3543 current_filter.dbs |= PACKET_DBM;
3544 } else if (strcmp(p, "packet_raw") == 0 ||
3545 strcmp(p, "p_raw") == 0) {
3546 current_filter.dbs |= (1<<PACKET_R_DB);
3547 } else if (strcmp(p, "packet_dgram") == 0 ||
3548 strcmp(p, "p_dgr") == 0) {
3549 current_filter.dbs |= (1<<PACKET_DG_DB);
3550 } else if (strcmp(p, "netlink") == 0) {
3551 current_filter.dbs |= (1<<NETLINK_DB);
3552 } else {
3553 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
3554 usage();
3555 }
3556 p = p1 + 1;
3557 } while (p1);
3558 break;
3559 }
3560 case 's':
3561 do_summary = 1;
3562 break;
3563 case 'D':
3564 dump_tcpdiag = optarg;
3565 break;
3566 case 'F':
3567 if (filter_fp) {
3568 fprintf(stderr, "More than one filter file\n");
3569 exit(-1);
3570 }
3571 if (optarg[0] == '-')
3572 filter_fp = stdin;
3573 else
3574 filter_fp = fopen(optarg, "r");
3575 if (!filter_fp) {
3576 perror("fopen filter file");
3577 exit(-1);
3578 }
3579 break;
3580 case 'v':
3581 case 'V':
3582 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
3583 exit(0);
116ac927
RH		 3584 case 'z':
3585 show_sock_ctx++;
3586 case 'Z':
3587 if (is_selinux_enabled() <= 0) {
3588 fprintf(stderr, "ss: SELinux is not enabled.\n");
3589 exit(1);
3590 }
3591 show_proc_ctx++;
3592 user_ent_hash_build();
3593 break;
aba5acdf
SH		 3594 case 'h':
3595 case '?':
7a96e199 3596 help();
aba5acdf
SH		 3597 default:
3598 usage();
3599 }
3600 }
3601
3602 argc -= optind;
3603 argv += optind;
3604
3605 get_slabstat(&slabstat);
3606
3607 if (do_summary) {
3608 print_summary();
3609 if (do_default && argc == 0)
3610 exit(0);
3611 }
3612
3613 if (do_default)
3614 current_filter.dbs = default_filter.dbs;
3615
3616 if (preferred_family == AF_UNSPEC) {
3617 if (!(current_filter.dbs&~UNIX_DBM))
3618 preferred_family = AF_UNIX;
3619 else if (!(current_filter.dbs&~PACKET_DBM))
3620 preferred_family = AF_PACKET;
3621 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
3622 preferred_family = AF_NETLINK;
3623 }
3624
3625 if (preferred_family != AF_UNSPEC) {
3626 int mask2;
3627 if (preferred_family == AF_INET ||
3628 preferred_family == AF_INET6) {
f70d96a4 3629 mask2= current_filter.dbs;
aba5acdf
SH		 3630 } else if (preferred_family == AF_PACKET) {
3631 mask2 = PACKET_DBM;
3632 } else if (preferred_family == AF_UNIX) {
3633 mask2 = UNIX_DBM;
3634 } else if (preferred_family == AF_NETLINK) {
3635 mask2 = (1<<NETLINK_DB);
3636 } else {
3637 mask2 = 0;
3638 }
3639
3640 if (do_default)
3641 current_filter.dbs = mask2;
3642 else
3643 current_filter.dbs &= mask2;
3644 current_filter.families = (1<<preferred_family);
3645 } else {
3646 if (!do_default)
3647 current_filter.families = ~0;
3648 else
3649 current_filter.families = default_filter.families;
3650 }
3651 if (current_filter.dbs == 0) {
3652 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
3653 exit(0);
3654 }
3655 if (current_filter.families == 0) {
3656 fprintf(stderr, "ss: no families to show with such filter.\n");
3657 exit(0);
3658 }
3659
3660 if (resolve_services && resolve_hosts &&
351efcde 3661 (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB))))
aba5acdf
SH		 3662 init_service_resolver();
3663
3664 /* Now parse filter... */
3665 if (argc == 0 && filter_fp) {
3666 if (ssfilter_parse(&current_filter.f, 0, NULL, filter_fp))
3667 usage();
3668 }
3669
3670 while (argc > 0) {
3671 if (strcmp(*argv, "state") == 0) {
3672 NEXT_ARG();
3673 if (!saw_states)
3674 current_filter.states = 0;
3675 current_filter.states |= scan_state(*argv);
3676 saw_states = 1;
3677 } else if (strcmp(*argv, "exclude") == 0 ||
3678 strcmp(*argv, "excl") == 0) {
3679 NEXT_ARG();
3680 if (!saw_states)
3681 current_filter.states = SS_ALL;
3682 current_filter.states &= ~scan_state(*argv);
3683 saw_states = 1;
3684 } else {
3685 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
3686 usage();
3687 break;
3688 }
3689 argc--; argv++;
3690 }
3691
3692 if (current_filter.states == 0) {
3693 fprintf(stderr, "ss: no socket states to show with such filter.\n");
3694 exit(0);
3695 }
3696
3697 if (dump_tcpdiag) {
3698 FILE *dump_fp = stdout;
3699 if (!(current_filter.dbs & (1<<TCP_DB))) {
3700 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
3701 exit(0);
3702 }
3703 if (dump_tcpdiag[0] != '-') {
3704 dump_fp = fopen(dump_tcpdiag, "w");
3705 if (!dump_tcpdiag) {
3706 perror("fopen dump file");
3707 exit(-1);
3708 }
3709 }
3fe5b534 3710 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
aba5acdf
SH		 3711 fflush(dump_fp);
3712 exit(0);
3713 }
3714
3715 netid_width = 0;
3716 if (current_filter.dbs&(current_filter.dbs-1))
3717 netid_width = 5;
3718
3719 state_width = 0;
3720 if (current_filter.states&(current_filter.states-1))
3721 state_width = 10;
3722
3723 screen_width = 80;
3724 if (isatty(STDOUT_FILENO)) {
3725 struct winsize w;
3726
3727 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
3728 if (w.ws_col > 0)
3729 screen_width = w.ws_col;
3730 }
3731 }
3732
3733 addrp_width = screen_width;
3734 addrp_width -= netid_width+1;
3735 addrp_width -= state_width+1;
3736 addrp_width -= 14;
3737
3738 if (addrp_width&1) {
3739 if (netid_width)
3740 netid_width++;
3741 else if (state_width)
3742 state_width++;
3743 }
3744
3745 addrp_width /= 2;
3746 addrp_width--;
3747
3748 serv_width = resolve_services ? 7 : 5;
3749
3750 if (addrp_width < 15+serv_width+1)
3751 addrp_width = 15+serv_width+1;
3752
ae665a52 3753 addr_width = addrp_width - serv_width - 1;
aba5acdf
SH		 3754
3755 if (netid_width)
3756 printf("%-*s ", netid_width, "Netid");
3757 if (state_width)
3758 printf("%-*s ", state_width, "State");
3759 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
3760
3761 printf("%*s:%-*s %*s:%-*s\n",
3762 addr_width, "Local Address", serv_width, "Port",
3763 addr_width, "Peer Address", serv_width, "Port");
3764
aba5acdf
SH		 3765 fflush(stdout);
3766
3767 if (current_filter.dbs & (1<<NETLINK_DB))
3768 netlink_show(&current_filter);
3769 if (current_filter.dbs & PACKET_DBM)
3770 packet_show(&current_filter);
3771 if (current_filter.dbs & UNIX_DBM)
3772 unix_show(&current_filter);
3773 if (current_filter.dbs & (1<<RAW_DB))
3774 raw_show(&current_filter);
3775 if (current_filter.dbs & (1<<UDP_DB))
3776 udp_show(&current_filter);
3777 if (current_filter.dbs & (1<<TCP_DB))
3fe5b534 3778 tcp_show(&current_filter, IPPROTO_TCP);
351efcde 3779 if (current_filter.dbs & (1<<DCCP_DB))
3fe5b534 3780 tcp_show(&current_filter, IPPROTO_DCCP);
116ac927
RH		 3781
3782 if (show_users || show_proc_ctx || show_sock_ctx)
3783 user_ent_destroy();
3784
aba5acdf
SH		 3785 return 0;
3786}
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