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ss: Make some variables function-local
[mirror_iproute2.git] / misc / ss.c
1 /*
2 * ss.c "sockstat", socket statistics
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 */
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <unistd.h>
15 #include <syslog.h>
16 #include <fcntl.h>
17 #include <sys/ioctl.h>
18 #include <sys/socket.h>
19 #include <sys/uio.h>
20 #include <netinet/in.h>
21 #include <string.h>
22 #include <errno.h>
23 #include <netdb.h>
24 #include <arpa/inet.h>
25 #include <dirent.h>
26 #include <fnmatch.h>
27 #include <getopt.h>
28 #include <stdbool.h>
29 #include <limits.h>
30
31 #include "utils.h"
32 #include "rt_names.h"
33 #include "ll_map.h"
34 #include "libnetlink.h"
35 #include "namespace.h"
36 #include "SNAPSHOT.h"
37
38 #include <linux/tcp.h>
39 #include <linux/sock_diag.h>
40 #include <linux/inet_diag.h>
41 #include <linux/unix_diag.h>
42 #include <linux/netdevice.h> /* for MAX_ADDR_LEN */
43 #include <linux/filter.h>
44 #include <linux/packet_diag.h>
45 #include <linux/netlink_diag.h>
46 #include <linux/sctp.h>
47
48 #define MAGIC_SEQ 123456
49
50 #define DIAG_REQUEST(_req, _r) \
51 struct { \
52 struct nlmsghdr nlh; \
53 _r; \
54 } _req = { \
55 .nlh = { \
56 .nlmsg_type = SOCK_DIAG_BY_FAMILY, \
57 .nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
58 .nlmsg_seq = MAGIC_SEQ, \
59 .nlmsg_len = sizeof(_req), \
60 }, \
61 }
62
63 #if HAVE_SELINUX
64 #include <selinux/selinux.h>
65 #else
66 /* Stubs for SELinux functions */
67 static int is_selinux_enabled(void)
68 {
69 return -1;
70 }
71
72 static int getpidcon(pid_t pid, char **context)
73 {
74 *context = NULL;
75 return -1;
76 }
77
78 static int getfilecon(char *path, char **context)
79 {
80 *context = NULL;
81 return -1;
82 }
83
84 static int security_get_initial_context(char *name, char **context)
85 {
86 *context = NULL;
87 return -1;
88 }
89 #endif
90
91 int resolve_hosts;
92 int resolve_services = 1;
93 int preferred_family = AF_UNSPEC;
94 int show_options;
95 int show_details;
96 int show_users;
97 int show_mem;
98 int show_tcpinfo;
99 int show_bpf;
100 int show_proc_ctx;
101 int show_sock_ctx;
102 int show_header = 1;
103 int follow_events;
104 int sctp_ino;
105
106 int netid_width;
107 int state_width;
108 int addr_width;
109 int serv_width;
110
111 static const char *TCP_PROTO = "tcp";
112 static const char *SCTP_PROTO = "sctp";
113 static const char *UDP_PROTO = "udp";
114 static const char *RAW_PROTO = "raw";
115 static const char *dg_proto;
116
117 enum {
118 TCP_DB,
119 DCCP_DB,
120 UDP_DB,
121 RAW_DB,
122 UNIX_DG_DB,
123 UNIX_ST_DB,
124 UNIX_SQ_DB,
125 PACKET_DG_DB,
126 PACKET_R_DB,
127 NETLINK_DB,
128 SCTP_DB,
129 MAX_DB
130 };
131
132 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
133 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
134 #define ALL_DB ((1<<MAX_DB)-1)
135 #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
136 #define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
137
138 enum {
139 SS_UNKNOWN,
140 SS_ESTABLISHED,
141 SS_SYN_SENT,
142 SS_SYN_RECV,
143 SS_FIN_WAIT1,
144 SS_FIN_WAIT2,
145 SS_TIME_WAIT,
146 SS_CLOSE,
147 SS_CLOSE_WAIT,
148 SS_LAST_ACK,
149 SS_LISTEN,
150 SS_CLOSING,
151 SS_MAX
152 };
153
154 enum {
155 SCTP_STATE_CLOSED = 0,
156 SCTP_STATE_COOKIE_WAIT = 1,
157 SCTP_STATE_COOKIE_ECHOED = 2,
158 SCTP_STATE_ESTABLISHED = 3,
159 SCTP_STATE_SHUTDOWN_PENDING = 4,
160 SCTP_STATE_SHUTDOWN_SENT = 5,
161 SCTP_STATE_SHUTDOWN_RECEIVED = 6,
162 SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
163 };
164
165 #define SS_ALL ((1 << SS_MAX) - 1)
166 #define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
167
168 #include "ssfilter.h"
169
170 struct filter {
171 int dbs;
172 int states;
173 int families;
174 struct ssfilter *f;
175 bool kill;
176 };
177
178 static const struct filter default_dbs[MAX_DB] = {
179 [TCP_DB] = {
180 .states = SS_CONN,
181 .families = (1 << AF_INET) | (1 << AF_INET6),
182 },
183 [DCCP_DB] = {
184 .states = SS_CONN,
185 .families = (1 << AF_INET) | (1 << AF_INET6),
186 },
187 [UDP_DB] = {
188 .states = (1 << SS_ESTABLISHED),
189 .families = (1 << AF_INET) | (1 << AF_INET6),
190 },
191 [RAW_DB] = {
192 .states = (1 << SS_ESTABLISHED),
193 .families = (1 << AF_INET) | (1 << AF_INET6),
194 },
195 [UNIX_DG_DB] = {
196 .states = (1 << SS_CLOSE),
197 .families = (1 << AF_UNIX),
198 },
199 [UNIX_ST_DB] = {
200 .states = SS_CONN,
201 .families = (1 << AF_UNIX),
202 },
203 [UNIX_SQ_DB] = {
204 .states = SS_CONN,
205 .families = (1 << AF_UNIX),
206 },
207 [PACKET_DG_DB] = {
208 .states = (1 << SS_CLOSE),
209 .families = (1 << AF_PACKET),
210 },
211 [PACKET_R_DB] = {
212 .states = (1 << SS_CLOSE),
213 .families = (1 << AF_PACKET),
214 },
215 [NETLINK_DB] = {
216 .states = (1 << SS_CLOSE),
217 .families = (1 << AF_NETLINK),
218 },
219 [SCTP_DB] = {
220 .states = SS_CONN,
221 .families = (1 << AF_INET) | (1 << AF_INET6),
222 },
223 };
224
225 static const struct filter default_afs[AF_MAX] = {
226 [AF_INET] = {
227 .dbs = INET_DBM,
228 .states = SS_CONN,
229 },
230 [AF_INET6] = {
231 .dbs = INET_DBM,
232 .states = SS_CONN,
233 },
234 [AF_UNIX] = {
235 .dbs = UNIX_DBM,
236 .states = SS_CONN,
237 },
238 [AF_PACKET] = {
239 .dbs = PACKET_DBM,
240 .states = (1 << SS_CLOSE),
241 },
242 [AF_NETLINK] = {
243 .dbs = (1 << NETLINK_DB),
244 .states = (1 << SS_CLOSE),
245 },
246 };
247
248 static int do_default = 1;
249 static struct filter current_filter;
250
251 static void filter_db_set(struct filter *f, int db)
252 {
253 f->states |= default_dbs[db].states;
254 f->dbs |= 1 << db;
255 do_default = 0;
256 }
257
258 static void filter_af_set(struct filter *f, int af)
259 {
260 f->states |= default_afs[af].states;
261 f->families |= 1 << af;
262 do_default = 0;
263 preferred_family = af;
264 }
265
266 static int filter_af_get(struct filter *f, int af)
267 {
268 return f->families & (1 << af);
269 }
270
271 static void filter_default_dbs(struct filter *f)
272 {
273 filter_db_set(f, UDP_DB);
274 filter_db_set(f, DCCP_DB);
275 filter_db_set(f, TCP_DB);
276 filter_db_set(f, RAW_DB);
277 filter_db_set(f, UNIX_ST_DB);
278 filter_db_set(f, UNIX_DG_DB);
279 filter_db_set(f, UNIX_SQ_DB);
280 filter_db_set(f, PACKET_R_DB);
281 filter_db_set(f, PACKET_DG_DB);
282 filter_db_set(f, NETLINK_DB);
283 filter_db_set(f, SCTP_DB);
284 }
285
286 static void filter_states_set(struct filter *f, int states)
287 {
288 if (states)
289 f->states = states;
290 }
291
292 static void filter_merge_defaults(struct filter *f)
293 {
294 int db;
295 int af;
296
297 for (db = 0; db < MAX_DB; db++) {
298 if (!(f->dbs & (1 << db)))
299 continue;
300
301 if (!(default_dbs[db].families & f->families))
302 f->families |= default_dbs[db].families;
303 }
304 for (af = 0; af < AF_MAX; af++) {
305 if (!(f->families & (1 << af)))
306 continue;
307
308 if (!(default_afs[af].dbs & f->dbs))
309 f->dbs |= default_afs[af].dbs;
310 }
311 }
312
313 static FILE *generic_proc_open(const char *env, const char *name)
314 {
315 const char *p = getenv(env);
316 char store[128];
317
318 if (!p) {
319 p = getenv("PROC_ROOT") ? : "/proc";
320 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
321 p = store;
322 }
323
324 return fopen(p, "r");
325 }
326 #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
327 #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
328 #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
329 #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
330 #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
331 #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
332 #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
333 #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
334 "net/packet")
335 #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
336 "net/netlink")
337 #define slabinfo_open() generic_proc_open("PROC_SLABINFO", "slabinfo")
338 #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
339 "net/sockstat")
340 #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
341 "net/sockstat6")
342 #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
343 #define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
344 "sys/net/ipv4/ip_local_port_range")
345
346 struct user_ent {
347 struct user_ent *next;
348 unsigned int ino;
349 int pid;
350 int fd;
351 char *process;
352 char *process_ctx;
353 char *socket_ctx;
354 };
355
356 #define USER_ENT_HASH_SIZE 256
357 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
358
359 static int user_ent_hashfn(unsigned int ino)
360 {
361 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
362
363 return val & (USER_ENT_HASH_SIZE - 1);
364 }
365
366 static void user_ent_add(unsigned int ino, char *process,
367 int pid, int fd,
368 char *proc_ctx,
369 char *sock_ctx)
370 {
371 struct user_ent *p, **pp;
372
373 p = malloc(sizeof(struct user_ent));
374 if (!p) {
375 fprintf(stderr, "ss: failed to malloc buffer\n");
376 abort();
377 }
378 p->next = NULL;
379 p->ino = ino;
380 p->pid = pid;
381 p->fd = fd;
382 p->process = strdup(process);
383 p->process_ctx = strdup(proc_ctx);
384 p->socket_ctx = strdup(sock_ctx);
385
386 pp = &user_ent_hash[user_ent_hashfn(ino)];
387 p->next = *pp;
388 *pp = p;
389 }
390
391 static void user_ent_destroy(void)
392 {
393 struct user_ent *p, *p_next;
394 int cnt = 0;
395
396 while (cnt != USER_ENT_HASH_SIZE) {
397 p = user_ent_hash[cnt];
398 while (p) {
399 free(p->process);
400 free(p->process_ctx);
401 free(p->socket_ctx);
402 p_next = p->next;
403 free(p);
404 p = p_next;
405 }
406 cnt++;
407 }
408 }
409
410 static void user_ent_hash_build(void)
411 {
412 const char *root = getenv("PROC_ROOT") ? : "/proc/";
413 struct dirent *d;
414 char name[1024];
415 int nameoff;
416 DIR *dir;
417 char *pid_context;
418 char *sock_context;
419 const char *no_ctx = "unavailable";
420 static int user_ent_hash_build_init;
421
422 /* If show_users & show_proc_ctx set only do this once */
423 if (user_ent_hash_build_init != 0)
424 return;
425
426 user_ent_hash_build_init = 1;
427
428 strncpy(name, root, sizeof(name)-1);
429 name[sizeof(name)-1] = 0;
430
431 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
432 strcat(name, "/");
433
434 nameoff = strlen(name);
435
436 dir = opendir(name);
437 if (!dir)
438 return;
439
440 while ((d = readdir(dir)) != NULL) {
441 struct dirent *d1;
442 char process[16];
443 char *p;
444 int pid, pos;
445 DIR *dir1;
446 char crap;
447
448 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
449 continue;
450
451 if (getpidcon(pid, &pid_context) != 0)
452 pid_context = strdup(no_ctx);
453
454 snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
455 pos = strlen(name);
456 if ((dir1 = opendir(name)) == NULL) {
457 free(pid_context);
458 continue;
459 }
460
461 process[0] = '\0';
462 p = process;
463
464 while ((d1 = readdir(dir1)) != NULL) {
465 const char *pattern = "socket:[";
466 unsigned int ino;
467 char lnk[64];
468 int fd;
469 ssize_t link_len;
470 char tmp[1024];
471
472 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
473 continue;
474
475 snprintf(name+pos, sizeof(name) - pos, "%d", fd);
476
477 link_len = readlink(name, lnk, sizeof(lnk)-1);
478 if (link_len == -1)
479 continue;
480 lnk[link_len] = '\0';
481
482 if (strncmp(lnk, pattern, strlen(pattern)))
483 continue;
484
485 sscanf(lnk, "socket:[%u]", &ino);
486
487 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
488 root, pid, d1->d_name);
489
490 if (getfilecon(tmp, &sock_context) <= 0)
491 sock_context = strdup(no_ctx);
492
493 if (*p == '\0') {
494 FILE *fp;
495
496 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
497 root, pid);
498 if ((fp = fopen(tmp, "r")) != NULL) {
499 if (fscanf(fp, "%*d (%[^)])", p) < 1)
500 ; /* ignore */
501 fclose(fp);
502 }
503 }
504 user_ent_add(ino, p, pid, fd,
505 pid_context, sock_context);
506 free(sock_context);
507 }
508 free(pid_context);
509 closedir(dir1);
510 }
511 closedir(dir);
512 }
513
514 enum entry_types {
515 USERS,
516 PROC_CTX,
517 PROC_SOCK_CTX
518 };
519
520 #define ENTRY_BUF_SIZE 512
521 static int find_entry(unsigned int ino, char **buf, int type)
522 {
523 struct user_ent *p;
524 int cnt = 0;
525 char *ptr;
526 char *new_buf;
527 int len, new_buf_len;
528 int buf_used = 0;
529 int buf_len = 0;
530
531 if (!ino)
532 return 0;
533
534 p = user_ent_hash[user_ent_hashfn(ino)];
535 ptr = *buf = NULL;
536 while (p) {
537 if (p->ino != ino)
538 goto next;
539
540 while (1) {
541 ptr = *buf + buf_used;
542 switch (type) {
543 case USERS:
544 len = snprintf(ptr, buf_len - buf_used,
545 "(\"%s\",pid=%d,fd=%d),",
546 p->process, p->pid, p->fd);
547 break;
548 case PROC_CTX:
549 len = snprintf(ptr, buf_len - buf_used,
550 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
551 p->process, p->pid,
552 p->process_ctx, p->fd);
553 break;
554 case PROC_SOCK_CTX:
555 len = snprintf(ptr, buf_len - buf_used,
556 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
557 p->process, p->pid,
558 p->process_ctx, p->fd,
559 p->socket_ctx);
560 break;
561 default:
562 fprintf(stderr, "ss: invalid type: %d\n", type);
563 abort();
564 }
565
566 if (len < 0 || len >= buf_len - buf_used) {
567 new_buf_len = buf_len + ENTRY_BUF_SIZE;
568 new_buf = realloc(*buf, new_buf_len);
569 if (!new_buf) {
570 fprintf(stderr, "ss: failed to malloc buffer\n");
571 abort();
572 }
573 *buf = new_buf;
574 buf_len = new_buf_len;
575 continue;
576 } else {
577 buf_used += len;
578 break;
579 }
580 }
581 cnt++;
582 next:
583 p = p->next;
584 }
585 if (buf_used) {
586 ptr = *buf + buf_used;
587 ptr[-1] = '\0';
588 }
589 return cnt;
590 }
591
592 /* Get stats from slab */
593
594 struct slabstat {
595 int socks;
596 int tcp_ports;
597 int tcp_tws;
598 int tcp_syns;
599 int skbs;
600 };
601
602 static struct slabstat slabstat;
603
604 static const char *slabstat_ids[] = {
605
606 "sock",
607 "tcp_bind_bucket",
608 "tcp_tw_bucket",
609 "tcp_open_request",
610 "skbuff_head_cache",
611 };
612
613 static int get_slabstat(struct slabstat *s)
614 {
615 char buf[256];
616 FILE *fp;
617 int cnt;
618 static int slabstat_valid;
619
620 if (slabstat_valid)
621 return 0;
622
623 memset(s, 0, sizeof(*s));
624
625 fp = slabinfo_open();
626 if (!fp)
627 return -1;
628
629 cnt = sizeof(*s)/sizeof(int);
630
631 if (!fgets(buf, sizeof(buf), fp)) {
632 fclose(fp);
633 return -1;
634 }
635 while (fgets(buf, sizeof(buf), fp) != NULL) {
636 int i;
637
638 for (i = 0; i < ARRAY_SIZE(slabstat_ids); i++) {
639 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
640 sscanf(buf, "%*s%d", ((int *)s) + i);
641 cnt--;
642 break;
643 }
644 }
645 if (cnt <= 0)
646 break;
647 }
648
649 slabstat_valid = 1;
650
651 fclose(fp);
652 return 0;
653 }
654
655 static unsigned long long cookie_sk_get(const uint32_t *cookie)
656 {
657 return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
658 }
659
660 static const char *sstate_name[] = {
661 "UNKNOWN",
662 [SS_ESTABLISHED] = "ESTAB",
663 [SS_SYN_SENT] = "SYN-SENT",
664 [SS_SYN_RECV] = "SYN-RECV",
665 [SS_FIN_WAIT1] = "FIN-WAIT-1",
666 [SS_FIN_WAIT2] = "FIN-WAIT-2",
667 [SS_TIME_WAIT] = "TIME-WAIT",
668 [SS_CLOSE] = "UNCONN",
669 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
670 [SS_LAST_ACK] = "LAST-ACK",
671 [SS_LISTEN] = "LISTEN",
672 [SS_CLOSING] = "CLOSING",
673 };
674
675 static const char *sctp_sstate_name[] = {
676 [SCTP_STATE_CLOSED] = "CLOSED",
677 [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
678 [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
679 [SCTP_STATE_ESTABLISHED] = "ESTAB",
680 [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
681 [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
682 [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
683 [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
684 };
685
686 static const char *sstate_namel[] = {
687 "UNKNOWN",
688 [SS_ESTABLISHED] = "established",
689 [SS_SYN_SENT] = "syn-sent",
690 [SS_SYN_RECV] = "syn-recv",
691 [SS_FIN_WAIT1] = "fin-wait-1",
692 [SS_FIN_WAIT2] = "fin-wait-2",
693 [SS_TIME_WAIT] = "time-wait",
694 [SS_CLOSE] = "unconnected",
695 [SS_CLOSE_WAIT] = "close-wait",
696 [SS_LAST_ACK] = "last-ack",
697 [SS_LISTEN] = "listening",
698 [SS_CLOSING] = "closing",
699 };
700
701 struct sockstat {
702 struct sockstat *next;
703 unsigned int type;
704 uint16_t prot;
705 uint16_t raw_prot;
706 inet_prefix local;
707 inet_prefix remote;
708 int lport;
709 int rport;
710 int state;
711 int rq, wq;
712 unsigned int ino;
713 unsigned int uid;
714 int refcnt;
715 unsigned int iface;
716 unsigned long long sk;
717 char *name;
718 char *peer_name;
719 __u32 mark;
720 };
721
722 struct dctcpstat {
723 unsigned int ce_state;
724 unsigned int alpha;
725 unsigned int ab_ecn;
726 unsigned int ab_tot;
727 bool enabled;
728 };
729
730 struct tcpstat {
731 struct sockstat ss;
732 int timer;
733 int timeout;
734 int probes;
735 char cong_alg[16];
736 double rto, ato, rtt, rttvar;
737 int qack, ssthresh, backoff;
738 double send_bps;
739 int snd_wscale;
740 int rcv_wscale;
741 int mss;
742 unsigned int cwnd;
743 unsigned int lastsnd;
744 unsigned int lastrcv;
745 unsigned int lastack;
746 double pacing_rate;
747 double pacing_rate_max;
748 double delivery_rate;
749 unsigned long long bytes_acked;
750 unsigned long long bytes_received;
751 unsigned int segs_out;
752 unsigned int segs_in;
753 unsigned int data_segs_out;
754 unsigned int data_segs_in;
755 unsigned int unacked;
756 unsigned int retrans;
757 unsigned int retrans_total;
758 unsigned int lost;
759 unsigned int sacked;
760 unsigned int fackets;
761 unsigned int reordering;
762 unsigned int not_sent;
763 double rcv_rtt;
764 double min_rtt;
765 int rcv_space;
766 unsigned long long busy_time;
767 unsigned long long rwnd_limited;
768 unsigned long long sndbuf_limited;
769 bool has_ts_opt;
770 bool has_sack_opt;
771 bool has_ecn_opt;
772 bool has_ecnseen_opt;
773 bool has_fastopen_opt;
774 bool has_wscale_opt;
775 bool app_limited;
776 struct dctcpstat *dctcp;
777 struct tcp_bbr_info *bbr_info;
778 };
779
780 /* SCTP assocs share the same inode number with their parent endpoint. So if we
781 * have seen the inode number before, it must be an assoc instead of the next
782 * endpoint. */
783 static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
784 {
785 if (strcmp(sock_name, "sctp"))
786 return false;
787 if (!sctp_ino || sctp_ino != s->ino)
788 return false;
789 return true;
790 }
791
792 static const char *unix_netid_name(int type)
793 {
794 switch (type) {
795 case SOCK_STREAM:
796 return "u_str";
797 case SOCK_SEQPACKET:
798 return "u_seq";
799 case SOCK_DGRAM:
800 default:
801 return "u_dgr";
802 }
803 }
804
805 static const char *proto_name(int protocol)
806 {
807 switch (protocol) {
808 case 0:
809 return "raw";
810 case IPPROTO_UDP:
811 return "udp";
812 case IPPROTO_TCP:
813 return "tcp";
814 case IPPROTO_SCTP:
815 return "sctp";
816 case IPPROTO_DCCP:
817 return "dccp";
818 }
819
820 return "???";
821 }
822
823 static void sock_state_print(struct sockstat *s)
824 {
825 const char *sock_name;
826
827 switch (s->local.family) {
828 case AF_UNIX:
829 sock_name = unix_netid_name(s->type);
830 break;
831 case AF_INET:
832 case AF_INET6:
833 sock_name = proto_name(s->type);
834 break;
835 case AF_PACKET:
836 sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
837 break;
838 case AF_NETLINK:
839 sock_name = "nl";
840 break;
841 default:
842 sock_name = "unknown";
843 }
844
845 if (netid_width)
846 printf("%-*s ", netid_width,
847 is_sctp_assoc(s, sock_name) ? "" : sock_name);
848 if (state_width) {
849 if (is_sctp_assoc(s, sock_name))
850 printf("`- %-*s ", state_width - 3,
851 sctp_sstate_name[s->state]);
852 else
853 printf("%-*s ", state_width, sstate_name[s->state]);
854 }
855
856 printf("%-6d %-6d ", s->rq, s->wq);
857 }
858
859 static void sock_details_print(struct sockstat *s)
860 {
861 if (s->uid)
862 printf(" uid:%u", s->uid);
863
864 printf(" ino:%u", s->ino);
865 printf(" sk:%llx", s->sk);
866
867 if (s->mark)
868 printf(" fwmark:0x%x", s->mark);
869 }
870
871 static void sock_addr_print_width(int addr_len, const char *addr, char *delim,
872 int port_len, const char *port, const char *ifname)
873 {
874 if (ifname) {
875 printf("%*s%%%s%s%-*s ", addr_len, addr, ifname, delim,
876 port_len, port);
877 } else {
878 printf("%*s%s%-*s ", addr_len, addr, delim, port_len, port);
879 }
880 }
881
882 static void sock_addr_print(const char *addr, char *delim, const char *port,
883 const char *ifname)
884 {
885 sock_addr_print_width(addr_width, addr, delim, serv_width, port, ifname);
886 }
887
888 static const char *print_ms_timer(int timeout)
889 {
890 static char buf[64];
891 int secs, msecs, minutes;
892
893 if (timeout < 0)
894 timeout = 0;
895 secs = timeout/1000;
896 minutes = secs/60;
897 secs = secs%60;
898 msecs = timeout%1000;
899 buf[0] = 0;
900 if (minutes) {
901 msecs = 0;
902 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
903 if (minutes > 9)
904 secs = 0;
905 }
906 if (secs) {
907 if (secs > 9)
908 msecs = 0;
909 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
910 }
911 if (msecs)
912 sprintf(buf+strlen(buf), "%03dms", msecs);
913 return buf;
914 }
915
916 struct scache {
917 struct scache *next;
918 int port;
919 char *name;
920 const char *proto;
921 };
922
923 struct scache *rlist;
924
925 static void init_service_resolver(void)
926 {
927 char buf[128];
928 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
929
930 if (!fp)
931 return;
932
933 if (!fgets(buf, sizeof(buf), fp)) {
934 pclose(fp);
935 return;
936 }
937 while (fgets(buf, sizeof(buf), fp) != NULL) {
938 unsigned int progn, port;
939 char proto[128], prog[128] = "rpc.";
940 struct scache *c;
941
942 if (sscanf(buf, "%u %*d %s %u %s",
943 &progn, proto, &port, prog+4) != 4)
944 continue;
945
946 if (!(c = malloc(sizeof(*c))))
947 continue;
948
949 c->port = port;
950 c->name = strdup(prog);
951 if (strcmp(proto, TCP_PROTO) == 0)
952 c->proto = TCP_PROTO;
953 else if (strcmp(proto, UDP_PROTO) == 0)
954 c->proto = UDP_PROTO;
955 else if (strcmp(proto, SCTP_PROTO) == 0)
956 c->proto = SCTP_PROTO;
957 else
958 c->proto = NULL;
959 c->next = rlist;
960 rlist = c;
961 }
962 pclose(fp);
963 }
964
965 /* Even do not try default linux ephemeral port ranges:
966 * default /etc/services contains so much of useless crap
967 * wouldbe "allocated" to this area that resolution
968 * is really harmful. I shrug each time when seeing
969 * "socks" or "cfinger" in dumps.
970 */
971 static int is_ephemeral(int port)
972 {
973 static int min = 0, max;
974
975 if (!min) {
976 FILE *f = ephemeral_ports_open();
977
978 if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
979 min = 1024;
980 max = 4999;
981 }
982 if (f)
983 fclose(f);
984 }
985 return port >= min && port <= max;
986 }
987
988
989 static const char *__resolve_service(int port)
990 {
991 struct scache *c;
992
993 for (c = rlist; c; c = c->next) {
994 if (c->port == port && c->proto == dg_proto)
995 return c->name;
996 }
997
998 if (!is_ephemeral(port)) {
999 static int notfirst;
1000 struct servent *se;
1001
1002 if (!notfirst) {
1003 setservent(1);
1004 notfirst = 1;
1005 }
1006 se = getservbyport(htons(port), dg_proto);
1007 if (se)
1008 return se->s_name;
1009 }
1010
1011 return NULL;
1012 }
1013
1014 #define SCACHE_BUCKETS 1024
1015 static struct scache *cache_htab[SCACHE_BUCKETS];
1016
1017 static const char *resolve_service(int port)
1018 {
1019 static char buf[128];
1020 struct scache *c;
1021 const char *res;
1022 int hash;
1023
1024 if (port == 0) {
1025 buf[0] = '*';
1026 buf[1] = 0;
1027 return buf;
1028 }
1029
1030 if (!resolve_services)
1031 goto do_numeric;
1032
1033 if (dg_proto == RAW_PROTO)
1034 return inet_proto_n2a(port, buf, sizeof(buf));
1035
1036
1037 hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
1038
1039 for (c = cache_htab[hash]; c; c = c->next) {
1040 if (c->port == port && c->proto == dg_proto)
1041 goto do_cache;
1042 }
1043
1044 c = malloc(sizeof(*c));
1045 if (!c)
1046 goto do_numeric;
1047 res = __resolve_service(port);
1048 c->port = port;
1049 c->name = res ? strdup(res) : NULL;
1050 c->proto = dg_proto;
1051 c->next = cache_htab[hash];
1052 cache_htab[hash] = c;
1053
1054 do_cache:
1055 if (c->name)
1056 return c->name;
1057
1058 do_numeric:
1059 sprintf(buf, "%u", port);
1060 return buf;
1061 }
1062
1063 static void inet_addr_print(const inet_prefix *a, int port, unsigned int ifindex)
1064 {
1065 char buf[1024];
1066 const char *ap = buf;
1067 int est_len = addr_width;
1068 const char *ifname = NULL;
1069
1070 if (a->family == AF_INET) {
1071 if (a->data[0] == 0) {
1072 buf[0] = '*';
1073 buf[1] = 0;
1074 } else {
1075 ap = format_host(AF_INET, 4, a->data);
1076 }
1077 } else {
1078 ap = format_host(a->family, 16, a->data);
1079 est_len = strlen(ap);
1080 if (est_len <= addr_width)
1081 est_len = addr_width;
1082 else
1083 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
1084 }
1085
1086 if (ifindex) {
1087 ifname = ll_index_to_name(ifindex);
1088 est_len -= strlen(ifname) + 1; /* +1 for percent char */
1089 if (est_len < 0)
1090 est_len = 0;
1091 }
1092
1093 sock_addr_print_width(est_len, ap, ":", serv_width, resolve_service(port),
1094 ifname);
1095 }
1096
1097 struct aafilter {
1098 inet_prefix addr;
1099 int port;
1100 unsigned int iface;
1101 __u32 mark;
1102 __u32 mask;
1103 struct aafilter *next;
1104 };
1105
1106 static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
1107 int plen)
1108 {
1109 if (!inet_addr_match(a, p, plen))
1110 return 0;
1111
1112 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
1113 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
1114 * sockets. Fair? */
1115 if (p->family == AF_INET && a->family == AF_INET6) {
1116 if (a->data[0] == 0 && a->data[1] == 0 &&
1117 a->data[2] == htonl(0xffff)) {
1118 inet_prefix tmp = *a;
1119
1120 tmp.data[0] = a->data[3];
1121 return inet_addr_match(&tmp, p, plen);
1122 }
1123 }
1124 return 1;
1125 }
1126
1127 static int unix_match(const inet_prefix *a, const inet_prefix *p)
1128 {
1129 char *addr, *pattern;
1130
1131 memcpy(&addr, a->data, sizeof(addr));
1132 memcpy(&pattern, p->data, sizeof(pattern));
1133 if (pattern == NULL)
1134 return 1;
1135 if (addr == NULL)
1136 addr = "";
1137 return !fnmatch(pattern, addr, 0);
1138 }
1139
1140 static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
1141 {
1142 switch (f->type) {
1143 case SSF_S_AUTO:
1144 {
1145 if (s->local.family == AF_UNIX) {
1146 char *p;
1147
1148 memcpy(&p, s->local.data, sizeof(p));
1149 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
1150 strspn(p+1, "0123456789abcdef") == 5);
1151 }
1152 if (s->local.family == AF_PACKET)
1153 return s->lport == 0 && s->local.data[0] == 0;
1154 if (s->local.family == AF_NETLINK)
1155 return s->lport < 0;
1156
1157 return is_ephemeral(s->lport);
1158 }
1159 case SSF_DCOND:
1160 {
1161 struct aafilter *a = (void *)f->pred;
1162
1163 if (a->addr.family == AF_UNIX)
1164 return unix_match(&s->remote, &a->addr);
1165 if (a->port != -1 && a->port != s->rport)
1166 return 0;
1167 if (a->addr.bitlen) {
1168 do {
1169 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
1170 return 1;
1171 } while ((a = a->next) != NULL);
1172 return 0;
1173 }
1174 return 1;
1175 }
1176 case SSF_SCOND:
1177 {
1178 struct aafilter *a = (void *)f->pred;
1179
1180 if (a->addr.family == AF_UNIX)
1181 return unix_match(&s->local, &a->addr);
1182 if (a->port != -1 && a->port != s->lport)
1183 return 0;
1184 if (a->addr.bitlen) {
1185 do {
1186 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
1187 return 1;
1188 } while ((a = a->next) != NULL);
1189 return 0;
1190 }
1191 return 1;
1192 }
1193 case SSF_D_GE:
1194 {
1195 struct aafilter *a = (void *)f->pred;
1196
1197 return s->rport >= a->port;
1198 }
1199 case SSF_D_LE:
1200 {
1201 struct aafilter *a = (void *)f->pred;
1202
1203 return s->rport <= a->port;
1204 }
1205 case SSF_S_GE:
1206 {
1207 struct aafilter *a = (void *)f->pred;
1208
1209 return s->lport >= a->port;
1210 }
1211 case SSF_S_LE:
1212 {
1213 struct aafilter *a = (void *)f->pred;
1214
1215 return s->lport <= a->port;
1216 }
1217 case SSF_DEVCOND:
1218 {
1219 struct aafilter *a = (void *)f->pred;
1220
1221 return s->iface == a->iface;
1222 }
1223 case SSF_MARKMASK:
1224 {
1225 struct aafilter *a = (void *)f->pred;
1226
1227 return (s->mark & a->mask) == a->mark;
1228 }
1229 /* Yup. It is recursion. Sorry. */
1230 case SSF_AND:
1231 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
1232 case SSF_OR:
1233 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
1234 case SSF_NOT:
1235 return !run_ssfilter(f->pred, s);
1236 default:
1237 abort();
1238 }
1239 }
1240
1241 /* Relocate external jumps by reloc. */
1242 static void ssfilter_patch(char *a, int len, int reloc)
1243 {
1244 while (len > 0) {
1245 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
1246
1247 if (op->no == len+4)
1248 op->no += reloc;
1249 len -= op->yes;
1250 a += op->yes;
1251 }
1252 if (len < 0)
1253 abort();
1254 }
1255
1256 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
1257 {
1258 switch (f->type) {
1259 case SSF_S_AUTO:
1260 {
1261 if (!(*bytecode = malloc(4))) abort();
1262 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
1263 return 4;
1264 }
1265 case SSF_DCOND:
1266 case SSF_SCOND:
1267 {
1268 struct aafilter *a = (void *)f->pred;
1269 struct aafilter *b;
1270 char *ptr;
1271 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
1272 int len = 0;
1273
1274 for (b = a; b; b = b->next) {
1275 len += 4 + sizeof(struct inet_diag_hostcond);
1276 if (a->addr.family == AF_INET6)
1277 len += 16;
1278 else
1279 len += 4;
1280 if (b->next)
1281 len += 4;
1282 }
1283 if (!(ptr = malloc(len))) abort();
1284 *bytecode = ptr;
1285 for (b = a; b; b = b->next) {
1286 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
1287 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
1288 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
1289 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
1290
1291 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
1292 cond->family = a->addr.family;
1293 cond->port = a->port;
1294 cond->prefix_len = a->addr.bitlen;
1295 memcpy(cond->addr, a->addr.data, alen);
1296 ptr += oplen;
1297 if (b->next) {
1298 op = (struct inet_diag_bc_op *)ptr;
1299 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
1300 ptr += 4;
1301 }
1302 }
1303 return ptr - *bytecode;
1304 }
1305 case SSF_D_GE:
1306 {
1307 struct aafilter *x = (void *)f->pred;
1308
1309 if (!(*bytecode = malloc(8))) abort();
1310 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1311 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1312 return 8;
1313 }
1314 case SSF_D_LE:
1315 {
1316 struct aafilter *x = (void *)f->pred;
1317
1318 if (!(*bytecode = malloc(8))) abort();
1319 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1320 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1321 return 8;
1322 }
1323 case SSF_S_GE:
1324 {
1325 struct aafilter *x = (void *)f->pred;
1326
1327 if (!(*bytecode = malloc(8))) abort();
1328 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1329 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1330 return 8;
1331 }
1332 case SSF_S_LE:
1333 {
1334 struct aafilter *x = (void *)f->pred;
1335
1336 if (!(*bytecode = malloc(8))) abort();
1337 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1338 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1339 return 8;
1340 }
1341
1342 case SSF_AND:
1343 {
1344 char *a1 = NULL, *a2 = NULL, *a;
1345 int l1, l2;
1346
1347 l1 = ssfilter_bytecompile(f->pred, &a1);
1348 l2 = ssfilter_bytecompile(f->post, &a2);
1349 if (!l1 || !l2) {
1350 free(a1);
1351 free(a2);
1352 return 0;
1353 }
1354 if (!(a = malloc(l1+l2))) abort();
1355 memcpy(a, a1, l1);
1356 memcpy(a+l1, a2, l2);
1357 free(a1); free(a2);
1358 ssfilter_patch(a, l1, l2);
1359 *bytecode = a;
1360 return l1+l2;
1361 }
1362 case SSF_OR:
1363 {
1364 char *a1 = NULL, *a2 = NULL, *a;
1365 int l1, l2;
1366
1367 l1 = ssfilter_bytecompile(f->pred, &a1);
1368 l2 = ssfilter_bytecompile(f->post, &a2);
1369 if (!l1 || !l2) {
1370 free(a1);
1371 free(a2);
1372 return 0;
1373 }
1374 if (!(a = malloc(l1+l2+4))) abort();
1375 memcpy(a, a1, l1);
1376 memcpy(a+l1+4, a2, l2);
1377 free(a1); free(a2);
1378 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
1379 *bytecode = a;
1380 return l1+l2+4;
1381 }
1382 case SSF_NOT:
1383 {
1384 char *a1 = NULL, *a;
1385 int l1;
1386
1387 l1 = ssfilter_bytecompile(f->pred, &a1);
1388 if (!l1) {
1389 free(a1);
1390 return 0;
1391 }
1392 if (!(a = malloc(l1+4))) abort();
1393 memcpy(a, a1, l1);
1394 free(a1);
1395 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
1396 *bytecode = a;
1397 return l1+4;
1398 }
1399 case SSF_DEVCOND:
1400 {
1401 /* bytecompile for SSF_DEVCOND not supported yet */
1402 return 0;
1403 }
1404 case SSF_MARKMASK:
1405 {
1406 struct aafilter *a = (void *)f->pred;
1407 struct instr {
1408 struct inet_diag_bc_op op;
1409 struct inet_diag_markcond cond;
1410 };
1411 int inslen = sizeof(struct instr);
1412
1413 if (!(*bytecode = malloc(inslen))) abort();
1414 ((struct instr *)*bytecode)[0] = (struct instr) {
1415 { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
1416 { a->mark, a->mask},
1417 };
1418
1419 return inslen;
1420 }
1421 default:
1422 abort();
1423 }
1424 }
1425
1426 static int remember_he(struct aafilter *a, struct hostent *he)
1427 {
1428 char **ptr = he->h_addr_list;
1429 int cnt = 0;
1430 int len;
1431
1432 if (he->h_addrtype == AF_INET)
1433 len = 4;
1434 else if (he->h_addrtype == AF_INET6)
1435 len = 16;
1436 else
1437 return 0;
1438
1439 while (*ptr) {
1440 struct aafilter *b = a;
1441
1442 if (a->addr.bitlen) {
1443 if ((b = malloc(sizeof(*b))) == NULL)
1444 return cnt;
1445 *b = *a;
1446 b->next = a->next;
1447 a->next = b;
1448 }
1449 memcpy(b->addr.data, *ptr, len);
1450 b->addr.bytelen = len;
1451 b->addr.bitlen = len*8;
1452 b->addr.family = he->h_addrtype;
1453 ptr++;
1454 cnt++;
1455 }
1456 return cnt;
1457 }
1458
1459 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
1460 {
1461 static int notfirst;
1462 int cnt = 0;
1463 struct hostent *he;
1464
1465 a->addr.bitlen = 0;
1466 if (!notfirst) {
1467 sethostent(1);
1468 notfirst = 1;
1469 }
1470 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1471 if (he)
1472 cnt = remember_he(a, he);
1473 if (fam == AF_UNSPEC) {
1474 he = gethostbyname2(addr, AF_INET6);
1475 if (he)
1476 cnt += remember_he(a, he);
1477 }
1478 return !cnt;
1479 }
1480
1481 static int xll_initted;
1482
1483 static void xll_init(void)
1484 {
1485 struct rtnl_handle rth;
1486
1487 if (rtnl_open(&rth, 0) < 0)
1488 exit(1);
1489
1490 ll_init_map(&rth);
1491 rtnl_close(&rth);
1492 xll_initted = 1;
1493 }
1494
1495 static const char *xll_index_to_name(int index)
1496 {
1497 if (!xll_initted)
1498 xll_init();
1499 return ll_index_to_name(index);
1500 }
1501
1502 static int xll_name_to_index(const char *dev)
1503 {
1504 if (!xll_initted)
1505 xll_init();
1506 return ll_name_to_index(dev);
1507 }
1508
1509 void *parse_devcond(char *name)
1510 {
1511 struct aafilter a = { .iface = 0 };
1512 struct aafilter *res;
1513
1514 a.iface = xll_name_to_index(name);
1515 if (a.iface == 0) {
1516 char *end;
1517 unsigned long n;
1518
1519 n = strtoul(name, &end, 0);
1520 if (!end || end == name || *end || n > UINT_MAX)
1521 return NULL;
1522
1523 a.iface = n;
1524 }
1525
1526 res = malloc(sizeof(*res));
1527 *res = a;
1528
1529 return res;
1530 }
1531
1532 void *parse_hostcond(char *addr, bool is_port)
1533 {
1534 char *port = NULL;
1535 struct aafilter a = { .port = -1 };
1536 struct aafilter *res;
1537 int fam = preferred_family;
1538 struct filter *f = &current_filter;
1539
1540 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1541 char *p;
1542
1543 a.addr.family = AF_UNIX;
1544 if (strncmp(addr, "unix:", 5) == 0)
1545 addr += 5;
1546 p = strdup(addr);
1547 a.addr.bitlen = 8*strlen(p);
1548 memcpy(a.addr.data, &p, sizeof(p));
1549 fam = AF_UNIX;
1550 goto out;
1551 }
1552
1553 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1554 a.addr.family = AF_PACKET;
1555 a.addr.bitlen = 0;
1556 if (strncmp(addr, "link:", 5) == 0)
1557 addr += 5;
1558 port = strchr(addr, ':');
1559 if (port) {
1560 *port = 0;
1561 if (port[1] && strcmp(port+1, "*")) {
1562 if (get_integer(&a.port, port+1, 0)) {
1563 if ((a.port = xll_name_to_index(port+1)) <= 0)
1564 return NULL;
1565 }
1566 }
1567 }
1568 if (addr[0] && strcmp(addr, "*")) {
1569 unsigned short tmp;
1570
1571 a.addr.bitlen = 32;
1572 if (ll_proto_a2n(&tmp, addr))
1573 return NULL;
1574 a.addr.data[0] = ntohs(tmp);
1575 }
1576 fam = AF_PACKET;
1577 goto out;
1578 }
1579
1580 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1581 a.addr.family = AF_NETLINK;
1582 a.addr.bitlen = 0;
1583 if (strncmp(addr, "netlink:", 8) == 0)
1584 addr += 8;
1585 port = strchr(addr, ':');
1586 if (port) {
1587 *port = 0;
1588 if (port[1] && strcmp(port+1, "*")) {
1589 if (get_integer(&a.port, port+1, 0)) {
1590 if (strcmp(port+1, "kernel") == 0)
1591 a.port = 0;
1592 else
1593 return NULL;
1594 }
1595 }
1596 }
1597 if (addr[0] && strcmp(addr, "*")) {
1598 a.addr.bitlen = 32;
1599 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
1600 return NULL;
1601 }
1602 fam = AF_NETLINK;
1603 goto out;
1604 }
1605
1606 if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
1607 fam = AF_INET;
1608 if (!strncmp(addr, "inet:", 5))
1609 addr += 5;
1610 } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
1611 fam = AF_INET6;
1612 if (!strncmp(addr, "inet6:", 6))
1613 addr += 6;
1614 }
1615
1616 /* URL-like literal [] */
1617 if (addr[0] == '[') {
1618 addr++;
1619 if ((port = strchr(addr, ']')) == NULL)
1620 return NULL;
1621 *port++ = 0;
1622 } else if (addr[0] == '*') {
1623 port = addr+1;
1624 } else {
1625 port = strrchr(strchr(addr, '/') ? : addr, ':');
1626 }
1627
1628 if (is_port)
1629 port = addr;
1630
1631 if (port && *port) {
1632 if (*port == ':')
1633 *port++ = 0;
1634
1635 if (*port && *port != '*') {
1636 if (get_integer(&a.port, port, 0)) {
1637 struct servent *se1 = NULL;
1638 struct servent *se2 = NULL;
1639
1640 if (current_filter.dbs&(1<<UDP_DB))
1641 se1 = getservbyname(port, UDP_PROTO);
1642 if (current_filter.dbs&(1<<TCP_DB))
1643 se2 = getservbyname(port, TCP_PROTO);
1644 if (se1 && se2 && se1->s_port != se2->s_port) {
1645 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1646 return NULL;
1647 }
1648 if (!se1)
1649 se1 = se2;
1650 if (se1) {
1651 a.port = ntohs(se1->s_port);
1652 } else {
1653 struct scache *s;
1654
1655 for (s = rlist; s; s = s->next) {
1656 if ((s->proto == UDP_PROTO &&
1657 (current_filter.dbs&(1<<UDP_DB))) ||
1658 (s->proto == TCP_PROTO &&
1659 (current_filter.dbs&(1<<TCP_DB)))) {
1660 if (s->name && strcmp(s->name, port) == 0) {
1661 if (a.port > 0 && a.port != s->port) {
1662 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1663 return NULL;
1664 }
1665 a.port = s->port;
1666 }
1667 }
1668 }
1669 if (a.port <= 0) {
1670 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1671 return NULL;
1672 }
1673 }
1674 }
1675 }
1676 }
1677 if (!is_port && addr && *addr && *addr != '*') {
1678 if (get_prefix_1(&a.addr, addr, fam)) {
1679 if (get_dns_host(&a, addr, fam)) {
1680 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1681 return NULL;
1682 }
1683 }
1684 }
1685
1686 out:
1687 if (fam != AF_UNSPEC) {
1688 int states = f->states;
1689 f->families = 0;
1690 filter_af_set(f, fam);
1691 filter_states_set(f, states);
1692 }
1693
1694 res = malloc(sizeof(*res));
1695 if (res)
1696 memcpy(res, &a, sizeof(a));
1697 return res;
1698 }
1699
1700 void *parse_markmask(const char *markmask)
1701 {
1702 struct aafilter a, *res;
1703
1704 if (strchr(markmask, '/')) {
1705 if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
1706 return NULL;
1707 } else {
1708 a.mask = 0xffffffff;
1709 if (sscanf(markmask, "%i", &a.mark) != 1)
1710 return NULL;
1711 }
1712
1713 res = malloc(sizeof(*res));
1714 if (res)
1715 memcpy(res, &a, sizeof(a));
1716 return res;
1717 }
1718
1719 static void proc_ctx_print(struct sockstat *s)
1720 {
1721 char *buf;
1722
1723 if (show_proc_ctx || show_sock_ctx) {
1724 if (find_entry(s->ino, &buf,
1725 (show_proc_ctx & show_sock_ctx) ?
1726 PROC_SOCK_CTX : PROC_CTX) > 0) {
1727 printf(" users:(%s)", buf);
1728 free(buf);
1729 }
1730 } else if (show_users) {
1731 if (find_entry(s->ino, &buf, USERS) > 0) {
1732 printf(" users:(%s)", buf);
1733 free(buf);
1734 }
1735 }
1736 }
1737
1738 static void inet_stats_print(struct sockstat *s)
1739 {
1740 sock_state_print(s);
1741
1742 inet_addr_print(&s->local, s->lport, s->iface);
1743 inet_addr_print(&s->remote, s->rport, 0);
1744
1745 proc_ctx_print(s);
1746 }
1747
1748 static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
1749 sockstat * s)
1750 {
1751 s->local.family = s->remote.family = family;
1752 if (family == AF_INET) {
1753 sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
1754 sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
1755 s->local.bytelen = s->remote.bytelen = 4;
1756 return 0;
1757 } else {
1758 sscanf(loc, "%08x%08x%08x%08x:%x",
1759 s->local.data,
1760 s->local.data + 1,
1761 s->local.data + 2,
1762 s->local.data + 3,
1763 &s->lport);
1764 sscanf(rem, "%08x%08x%08x%08x:%x",
1765 s->remote.data,
1766 s->remote.data + 1,
1767 s->remote.data + 2,
1768 s->remote.data + 3,
1769 &s->rport);
1770 s->local.bytelen = s->remote.bytelen = 16;
1771 return 0;
1772 }
1773 return -1;
1774 }
1775
1776 static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
1777 {
1778 char *p;
1779
1780 if ((p = strchr(line, ':')) == NULL)
1781 return -1;
1782
1783 *loc = p+2;
1784 if ((p = strchr(*loc, ':')) == NULL)
1785 return -1;
1786
1787 p[5] = 0;
1788 *rem = p+6;
1789 if ((p = strchr(*rem, ':')) == NULL)
1790 return -1;
1791
1792 p[5] = 0;
1793 *data = p+6;
1794 return 0;
1795 }
1796
1797 static char *sprint_bw(char *buf, double bw)
1798 {
1799 if (bw > 1000000.)
1800 sprintf(buf, "%.1fM", bw / 1000000.);
1801 else if (bw > 1000.)
1802 sprintf(buf, "%.1fK", bw / 1000.);
1803 else
1804 sprintf(buf, "%g", bw);
1805
1806 return buf;
1807 }
1808
1809 static void sctp_stats_print(struct sctp_info *s)
1810 {
1811 if (s->sctpi_tag)
1812 printf(" tag:%x", s->sctpi_tag);
1813 if (s->sctpi_state)
1814 printf(" state:%s", sctp_sstate_name[s->sctpi_state]);
1815 if (s->sctpi_rwnd)
1816 printf(" rwnd:%d", s->sctpi_rwnd);
1817 if (s->sctpi_unackdata)
1818 printf(" unackdata:%d", s->sctpi_unackdata);
1819 if (s->sctpi_penddata)
1820 printf(" penddata:%d", s->sctpi_penddata);
1821 if (s->sctpi_instrms)
1822 printf(" instrms:%d", s->sctpi_instrms);
1823 if (s->sctpi_outstrms)
1824 printf(" outstrms:%d", s->sctpi_outstrms);
1825 if (s->sctpi_inqueue)
1826 printf(" inqueue:%d", s->sctpi_inqueue);
1827 if (s->sctpi_outqueue)
1828 printf(" outqueue:%d", s->sctpi_outqueue);
1829 if (s->sctpi_overall_error)
1830 printf(" overerr:%d", s->sctpi_overall_error);
1831 if (s->sctpi_max_burst)
1832 printf(" maxburst:%d", s->sctpi_max_burst);
1833 if (s->sctpi_maxseg)
1834 printf(" maxseg:%d", s->sctpi_maxseg);
1835 if (s->sctpi_peer_rwnd)
1836 printf(" prwnd:%d", s->sctpi_peer_rwnd);
1837 if (s->sctpi_peer_tag)
1838 printf(" ptag:%x", s->sctpi_peer_tag);
1839 if (s->sctpi_peer_capable)
1840 printf(" pcapable:%d", s->sctpi_peer_capable);
1841 if (s->sctpi_peer_sack)
1842 printf(" psack:%d", s->sctpi_peer_sack);
1843 if (s->sctpi_s_autoclose)
1844 printf(" autoclose:%d", s->sctpi_s_autoclose);
1845 if (s->sctpi_s_adaptation_ind)
1846 printf(" adapind:%d", s->sctpi_s_adaptation_ind);
1847 if (s->sctpi_s_pd_point)
1848 printf(" pdpoint:%d", s->sctpi_s_pd_point);
1849 if (s->sctpi_s_nodelay)
1850 printf(" nodealy:%d", s->sctpi_s_nodelay);
1851 if (s->sctpi_s_disable_fragments)
1852 printf(" nofrag:%d", s->sctpi_s_disable_fragments);
1853 if (s->sctpi_s_v4mapped)
1854 printf(" v4mapped:%d", s->sctpi_s_v4mapped);
1855 if (s->sctpi_s_frag_interleave)
1856 printf(" fraginl:%d", s->sctpi_s_frag_interleave);
1857 }
1858
1859 static void tcp_stats_print(struct tcpstat *s)
1860 {
1861 char b1[64];
1862
1863 if (s->has_ts_opt)
1864 printf(" ts");
1865 if (s->has_sack_opt)
1866 printf(" sack");
1867 if (s->has_ecn_opt)
1868 printf(" ecn");
1869 if (s->has_ecnseen_opt)
1870 printf(" ecnseen");
1871 if (s->has_fastopen_opt)
1872 printf(" fastopen");
1873 if (s->cong_alg[0])
1874 printf(" %s", s->cong_alg);
1875 if (s->has_wscale_opt)
1876 printf(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
1877 if (s->rto)
1878 printf(" rto:%g", s->rto);
1879 if (s->backoff)
1880 printf(" backoff:%u", s->backoff);
1881 if (s->rtt)
1882 printf(" rtt:%g/%g", s->rtt, s->rttvar);
1883 if (s->ato)
1884 printf(" ato:%g", s->ato);
1885
1886 if (s->qack)
1887 printf(" qack:%d", s->qack);
1888 if (s->qack & 1)
1889 printf(" bidir");
1890
1891 if (s->mss)
1892 printf(" mss:%d", s->mss);
1893 if (s->cwnd)
1894 printf(" cwnd:%u", s->cwnd);
1895 if (s->ssthresh)
1896 printf(" ssthresh:%d", s->ssthresh);
1897
1898 if (s->bytes_acked)
1899 printf(" bytes_acked:%llu", s->bytes_acked);
1900 if (s->bytes_received)
1901 printf(" bytes_received:%llu", s->bytes_received);
1902 if (s->segs_out)
1903 printf(" segs_out:%u", s->segs_out);
1904 if (s->segs_in)
1905 printf(" segs_in:%u", s->segs_in);
1906 if (s->data_segs_out)
1907 printf(" data_segs_out:%u", s->data_segs_out);
1908 if (s->data_segs_in)
1909 printf(" data_segs_in:%u", s->data_segs_in);
1910
1911 if (s->dctcp && s->dctcp->enabled) {
1912 struct dctcpstat *dctcp = s->dctcp;
1913
1914 printf(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
1915 dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
1916 dctcp->ab_tot);
1917 } else if (s->dctcp) {
1918 printf(" dctcp:fallback_mode");
1919 }
1920
1921 if (s->bbr_info) {
1922 __u64 bw;
1923
1924 bw = s->bbr_info->bbr_bw_hi;
1925 bw <<= 32;
1926 bw |= s->bbr_info->bbr_bw_lo;
1927
1928 printf(" bbr:(bw:%sbps,mrtt:%g",
1929 sprint_bw(b1, bw * 8.0),
1930 (double)s->bbr_info->bbr_min_rtt / 1000.0);
1931 if (s->bbr_info->bbr_pacing_gain)
1932 printf(",pacing_gain:%g",
1933 (double)s->bbr_info->bbr_pacing_gain / 256.0);
1934 if (s->bbr_info->bbr_cwnd_gain)
1935 printf(",cwnd_gain:%g",
1936 (double)s->bbr_info->bbr_cwnd_gain / 256.0);
1937 printf(")");
1938 }
1939
1940 if (s->send_bps)
1941 printf(" send %sbps", sprint_bw(b1, s->send_bps));
1942 if (s->lastsnd)
1943 printf(" lastsnd:%u", s->lastsnd);
1944 if (s->lastrcv)
1945 printf(" lastrcv:%u", s->lastrcv);
1946 if (s->lastack)
1947 printf(" lastack:%u", s->lastack);
1948
1949 if (s->pacing_rate) {
1950 printf(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
1951 if (s->pacing_rate_max)
1952 printf("/%sbps", sprint_bw(b1,
1953 s->pacing_rate_max));
1954 }
1955
1956 if (s->delivery_rate)
1957 printf(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
1958 if (s->app_limited)
1959 printf(" app_limited");
1960
1961 if (s->busy_time) {
1962 printf(" busy:%llums", s->busy_time / 1000);
1963 if (s->rwnd_limited)
1964 printf(" rwnd_limited:%llums(%.1f%%)",
1965 s->rwnd_limited / 1000,
1966 100.0 * s->rwnd_limited / s->busy_time);
1967 if (s->sndbuf_limited)
1968 printf(" sndbuf_limited:%llums(%.1f%%)",
1969 s->sndbuf_limited / 1000,
1970 100.0 * s->sndbuf_limited / s->busy_time);
1971 }
1972
1973 if (s->unacked)
1974 printf(" unacked:%u", s->unacked);
1975 if (s->retrans || s->retrans_total)
1976 printf(" retrans:%u/%u", s->retrans, s->retrans_total);
1977 if (s->lost)
1978 printf(" lost:%u", s->lost);
1979 if (s->sacked && s->ss.state != SS_LISTEN)
1980 printf(" sacked:%u", s->sacked);
1981 if (s->fackets)
1982 printf(" fackets:%u", s->fackets);
1983 if (s->reordering != 3)
1984 printf(" reordering:%d", s->reordering);
1985 if (s->rcv_rtt)
1986 printf(" rcv_rtt:%g", s->rcv_rtt);
1987 if (s->rcv_space)
1988 printf(" rcv_space:%d", s->rcv_space);
1989 if (s->not_sent)
1990 printf(" notsent:%u", s->not_sent);
1991 if (s->min_rtt)
1992 printf(" minrtt:%g", s->min_rtt);
1993 }
1994
1995 static void tcp_timer_print(struct tcpstat *s)
1996 {
1997 static const char * const tmr_name[] = {
1998 "off",
1999 "on",
2000 "keepalive",
2001 "timewait",
2002 "persist",
2003 "unknown"
2004 };
2005
2006 if (s->timer) {
2007 if (s->timer > 4)
2008 s->timer = 5;
2009 printf(" timer:(%s,%s,%d)",
2010 tmr_name[s->timer],
2011 print_ms_timer(s->timeout),
2012 s->retrans);
2013 }
2014 }
2015
2016 static void sctp_timer_print(struct tcpstat *s)
2017 {
2018 if (s->timer)
2019 printf(" timer:(T3_RTX,%s,%d)",
2020 print_ms_timer(s->timeout), s->retrans);
2021 }
2022
2023 static int tcp_show_line(char *line, const struct filter *f, int family)
2024 {
2025 int rto = 0, ato = 0;
2026 struct tcpstat s = {};
2027 char *loc, *rem, *data;
2028 char opt[256];
2029 int n;
2030 int hz = get_user_hz();
2031
2032 if (proc_inet_split_line(line, &loc, &rem, &data))
2033 return -1;
2034
2035 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2036
2037 if (!(f->states & (1 << state)))
2038 return 0;
2039
2040 proc_parse_inet_addr(loc, rem, family, &s.ss);
2041
2042 if (f->f && run_ssfilter(f->f, &s.ss) == 0)
2043 return 0;
2044
2045 opt[0] = 0;
2046 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
2047 &s.ss.state, &s.ss.wq, &s.ss.rq,
2048 &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
2049 &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
2050 &s.ssthresh, opt);
2051
2052 if (n < 17)
2053 opt[0] = 0;
2054
2055 if (n < 12) {
2056 rto = 0;
2057 s.cwnd = 2;
2058 s.ssthresh = -1;
2059 ato = s.qack = 0;
2060 }
2061
2062 s.retrans = s.timer != 1 ? s.probes : s.retrans;
2063 s.timeout = (s.timeout * 1000 + hz - 1) / hz;
2064 s.ato = (double)ato / hz;
2065 s.qack /= 2;
2066 s.rto = (double)rto;
2067 s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
2068 s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
2069 s.ss.type = IPPROTO_TCP;
2070
2071 inet_stats_print(&s.ss);
2072
2073 if (show_options)
2074 tcp_timer_print(&s);
2075
2076 if (show_details) {
2077 sock_details_print(&s.ss);
2078 if (opt[0])
2079 printf(" opt:\"%s\"", opt);
2080 }
2081
2082 if (show_tcpinfo)
2083 tcp_stats_print(&s);
2084
2085 printf("\n");
2086 return 0;
2087 }
2088
2089 static int generic_record_read(FILE *fp,
2090 int (*worker)(char*, const struct filter *, int),
2091 const struct filter *f, int fam)
2092 {
2093 char line[256];
2094
2095 /* skip header */
2096 if (fgets(line, sizeof(line), fp) == NULL)
2097 goto outerr;
2098
2099 while (fgets(line, sizeof(line), fp) != NULL) {
2100 int n = strlen(line);
2101
2102 if (n == 0 || line[n-1] != '\n') {
2103 errno = -EINVAL;
2104 return -1;
2105 }
2106 line[n-1] = 0;
2107
2108 if (worker(line, f, fam) < 0)
2109 return 0;
2110 }
2111 outerr:
2112
2113 return ferror(fp) ? -1 : 0;
2114 }
2115
2116 static void print_skmeminfo(struct rtattr *tb[], int attrtype)
2117 {
2118 const __u32 *skmeminfo;
2119
2120 if (!tb[attrtype]) {
2121 if (attrtype == INET_DIAG_SKMEMINFO) {
2122 if (!tb[INET_DIAG_MEMINFO])
2123 return;
2124
2125 const struct inet_diag_meminfo *minfo =
2126 RTA_DATA(tb[INET_DIAG_MEMINFO]);
2127
2128 printf(" mem:(r%u,w%u,f%u,t%u)",
2129 minfo->idiag_rmem,
2130 minfo->idiag_wmem,
2131 minfo->idiag_fmem,
2132 minfo->idiag_tmem);
2133 }
2134 return;
2135 }
2136
2137 skmeminfo = RTA_DATA(tb[attrtype]);
2138
2139 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
2140 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
2141 skmeminfo[SK_MEMINFO_RCVBUF],
2142 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
2143 skmeminfo[SK_MEMINFO_SNDBUF],
2144 skmeminfo[SK_MEMINFO_FWD_ALLOC],
2145 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
2146 skmeminfo[SK_MEMINFO_OPTMEM]);
2147
2148 if (RTA_PAYLOAD(tb[attrtype]) >=
2149 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
2150 printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
2151
2152 if (RTA_PAYLOAD(tb[attrtype]) >=
2153 (SK_MEMINFO_DROPS + 1) * sizeof(__u32))
2154 printf(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
2155
2156 printf(")");
2157 }
2158
2159 #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
2160
2161 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2162 struct rtattr *tb[])
2163 {
2164 double rtt = 0;
2165 struct tcpstat s = {};
2166
2167 s.ss.state = r->idiag_state;
2168
2169 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2170
2171 if (tb[INET_DIAG_INFO]) {
2172 struct tcp_info *info;
2173 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2174
2175 /* workaround for older kernels with less fields */
2176 if (len < sizeof(*info)) {
2177 info = alloca(sizeof(*info));
2178 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2179 memset((char *)info + len, 0, sizeof(*info) - len);
2180 } else
2181 info = RTA_DATA(tb[INET_DIAG_INFO]);
2182
2183 if (show_options) {
2184 s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
2185 s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
2186 s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
2187 s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
2188 s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
2189 }
2190
2191 if (tb[INET_DIAG_CONG])
2192 strncpy(s.cong_alg,
2193 rta_getattr_str(tb[INET_DIAG_CONG]),
2194 sizeof(s.cong_alg) - 1);
2195
2196 if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
2197 s.has_wscale_opt = true;
2198 s.snd_wscale = info->tcpi_snd_wscale;
2199 s.rcv_wscale = info->tcpi_rcv_wscale;
2200 }
2201
2202 if (info->tcpi_rto && info->tcpi_rto != 3000000)
2203 s.rto = (double)info->tcpi_rto / 1000;
2204
2205 s.backoff = info->tcpi_backoff;
2206 s.rtt = (double)info->tcpi_rtt / 1000;
2207 s.rttvar = (double)info->tcpi_rttvar / 1000;
2208 s.ato = (double)info->tcpi_ato / 1000;
2209 s.mss = info->tcpi_snd_mss;
2210 s.rcv_space = info->tcpi_rcv_space;
2211 s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
2212 s.lastsnd = info->tcpi_last_data_sent;
2213 s.lastrcv = info->tcpi_last_data_recv;
2214 s.lastack = info->tcpi_last_ack_recv;
2215 s.unacked = info->tcpi_unacked;
2216 s.retrans = info->tcpi_retrans;
2217 s.retrans_total = info->tcpi_total_retrans;
2218 s.lost = info->tcpi_lost;
2219 s.sacked = info->tcpi_sacked;
2220 s.reordering = info->tcpi_reordering;
2221 s.rcv_space = info->tcpi_rcv_space;
2222 s.cwnd = info->tcpi_snd_cwnd;
2223
2224 if (info->tcpi_snd_ssthresh < 0xFFFF)
2225 s.ssthresh = info->tcpi_snd_ssthresh;
2226
2227 rtt = (double) info->tcpi_rtt;
2228 if (tb[INET_DIAG_VEGASINFO]) {
2229 const struct tcpvegas_info *vinfo
2230 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
2231
2232 if (vinfo->tcpv_enabled &&
2233 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
2234 rtt = vinfo->tcpv_rtt;
2235 }
2236
2237 if (tb[INET_DIAG_DCTCPINFO]) {
2238 struct dctcpstat *dctcp = malloc(sizeof(struct
2239 dctcpstat));
2240
2241 const struct tcp_dctcp_info *dinfo
2242 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
2243
2244 dctcp->enabled = !!dinfo->dctcp_enabled;
2245 dctcp->ce_state = dinfo->dctcp_ce_state;
2246 dctcp->alpha = dinfo->dctcp_alpha;
2247 dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
2248 dctcp->ab_tot = dinfo->dctcp_ab_tot;
2249 s.dctcp = dctcp;
2250 }
2251
2252 if (tb[INET_DIAG_BBRINFO]) {
2253 const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
2254 int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
2255 sizeof(*s.bbr_info));
2256
2257 s.bbr_info = calloc(1, sizeof(*s.bbr_info));
2258 if (s.bbr_info && bbr_info)
2259 memcpy(s.bbr_info, bbr_info, len);
2260 }
2261
2262 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
2263 s.send_bps = (double) info->tcpi_snd_cwnd *
2264 (double)info->tcpi_snd_mss * 8000000. / rtt;
2265 }
2266
2267 if (info->tcpi_pacing_rate &&
2268 info->tcpi_pacing_rate != ~0ULL) {
2269 s.pacing_rate = info->tcpi_pacing_rate * 8.;
2270
2271 if (info->tcpi_max_pacing_rate &&
2272 info->tcpi_max_pacing_rate != ~0ULL)
2273 s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
2274 }
2275 s.bytes_acked = info->tcpi_bytes_acked;
2276 s.bytes_received = info->tcpi_bytes_received;
2277 s.segs_out = info->tcpi_segs_out;
2278 s.segs_in = info->tcpi_segs_in;
2279 s.data_segs_out = info->tcpi_data_segs_out;
2280 s.data_segs_in = info->tcpi_data_segs_in;
2281 s.not_sent = info->tcpi_notsent_bytes;
2282 if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
2283 s.min_rtt = (double) info->tcpi_min_rtt / 1000;
2284 s.delivery_rate = info->tcpi_delivery_rate * 8.;
2285 s.app_limited = info->tcpi_delivery_rate_app_limited;
2286 s.busy_time = info->tcpi_busy_time;
2287 s.rwnd_limited = info->tcpi_rwnd_limited;
2288 s.sndbuf_limited = info->tcpi_sndbuf_limited;
2289 tcp_stats_print(&s);
2290 free(s.dctcp);
2291 free(s.bbr_info);
2292 }
2293 }
2294
2295 static const char *format_host_sa(struct sockaddr_storage *sa)
2296 {
2297 union {
2298 struct sockaddr_in sin;
2299 struct sockaddr_in6 sin6;
2300 } *saddr = (void *)sa;
2301
2302 switch (sa->ss_family) {
2303 case AF_INET:
2304 return format_host(AF_INET, 4, &saddr->sin.sin_addr);
2305 case AF_INET6:
2306 return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
2307 default:
2308 return "";
2309 }
2310 }
2311
2312 static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2313 struct rtattr *tb[])
2314 {
2315 struct sockaddr_storage *sa;
2316 int len;
2317
2318 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2319
2320 if (tb[INET_DIAG_LOCALS]) {
2321 len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
2322 sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
2323
2324 printf("locals:%s", format_host_sa(sa));
2325 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2326 printf(",%s", format_host_sa(sa));
2327
2328 }
2329 if (tb[INET_DIAG_PEERS]) {
2330 len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
2331 sa = RTA_DATA(tb[INET_DIAG_PEERS]);
2332
2333 printf(" peers:%s", format_host_sa(sa));
2334 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2335 printf(",%s", format_host_sa(sa));
2336 }
2337 if (tb[INET_DIAG_INFO]) {
2338 struct sctp_info *info;
2339 len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2340
2341 /* workaround for older kernels with less fields */
2342 if (len < sizeof(*info)) {
2343 info = alloca(sizeof(*info));
2344 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2345 memset((char *)info + len, 0, sizeof(*info) - len);
2346 } else
2347 info = RTA_DATA(tb[INET_DIAG_INFO]);
2348
2349 sctp_stats_print(info);
2350 }
2351 }
2352
2353 static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
2354 {
2355 struct rtattr *tb[INET_DIAG_MAX+1];
2356 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2357
2358 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2359 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2360
2361 s->state = r->idiag_state;
2362 s->local.family = s->remote.family = r->idiag_family;
2363 s->lport = ntohs(r->id.idiag_sport);
2364 s->rport = ntohs(r->id.idiag_dport);
2365 s->wq = r->idiag_wqueue;
2366 s->rq = r->idiag_rqueue;
2367 s->ino = r->idiag_inode;
2368 s->uid = r->idiag_uid;
2369 s->iface = r->id.idiag_if;
2370 s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
2371
2372 s->mark = 0;
2373 if (tb[INET_DIAG_MARK])
2374 s->mark = *(__u32 *) RTA_DATA(tb[INET_DIAG_MARK]);
2375 if (tb[INET_DIAG_PROTOCOL])
2376 s->raw_prot = *(__u8 *)RTA_DATA(tb[INET_DIAG_PROTOCOL]);
2377 else
2378 s->raw_prot = 0;
2379
2380 if (s->local.family == AF_INET)
2381 s->local.bytelen = s->remote.bytelen = 4;
2382 else
2383 s->local.bytelen = s->remote.bytelen = 16;
2384
2385 memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
2386 memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
2387 }
2388
2389 static int inet_show_sock(struct nlmsghdr *nlh,
2390 struct sockstat *s)
2391 {
2392 struct rtattr *tb[INET_DIAG_MAX+1];
2393 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2394
2395 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2396 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2397
2398 if (tb[INET_DIAG_PROTOCOL])
2399 s->type = *(__u8 *)RTA_DATA(tb[INET_DIAG_PROTOCOL]);
2400
2401 inet_stats_print(s);
2402
2403 if (show_options) {
2404 struct tcpstat t = {};
2405
2406 t.timer = r->idiag_timer;
2407 t.timeout = r->idiag_expires;
2408 t.retrans = r->idiag_retrans;
2409 if (s->type == IPPROTO_SCTP)
2410 sctp_timer_print(&t);
2411 else
2412 tcp_timer_print(&t);
2413 }
2414
2415 if (show_details) {
2416 sock_details_print(s);
2417 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY]) {
2418 unsigned char v6only;
2419
2420 v6only = *(__u8 *)RTA_DATA(tb[INET_DIAG_SKV6ONLY]);
2421 printf(" v6only:%u", v6only);
2422 }
2423 if (tb[INET_DIAG_SHUTDOWN]) {
2424 unsigned char mask;
2425
2426 mask = *(__u8 *)RTA_DATA(tb[INET_DIAG_SHUTDOWN]);
2427 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2428 }
2429 }
2430
2431 if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
2432 printf("\n\t");
2433 if (s->type == IPPROTO_SCTP)
2434 sctp_show_info(nlh, r, tb);
2435 else
2436 tcp_show_info(nlh, r, tb);
2437 }
2438 sctp_ino = s->ino;
2439
2440 printf("\n");
2441 return 0;
2442 }
2443
2444 static int tcpdiag_send(int fd, int protocol, struct filter *f)
2445 {
2446 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2447 struct {
2448 struct nlmsghdr nlh;
2449 struct inet_diag_req r;
2450 } req = {
2451 .nlh.nlmsg_len = sizeof(req),
2452 .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
2453 .nlh.nlmsg_seq = MAGIC_SEQ,
2454 .r.idiag_family = AF_INET,
2455 .r.idiag_states = f->states,
2456 };
2457 char *bc = NULL;
2458 int bclen;
2459 struct msghdr msg;
2460 struct rtattr rta;
2461 struct iovec iov[3];
2462 int iovlen = 1;
2463
2464 if (protocol == IPPROTO_UDP)
2465 return -1;
2466
2467 if (protocol == IPPROTO_TCP)
2468 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
2469 else
2470 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
2471 if (show_mem) {
2472 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2473 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2474 }
2475
2476 if (show_tcpinfo) {
2477 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2478 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2479 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2480 }
2481
2482 iov[0] = (struct iovec){
2483 .iov_base = &req,
2484 .iov_len = sizeof(req)
2485 };
2486 if (f->f) {
2487 bclen = ssfilter_bytecompile(f->f, &bc);
2488 if (bclen) {
2489 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2490 rta.rta_len = RTA_LENGTH(bclen);
2491 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2492 iov[2] = (struct iovec){ bc, bclen };
2493 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2494 iovlen = 3;
2495 }
2496 }
2497
2498 msg = (struct msghdr) {
2499 .msg_name = (void *)&nladdr,
2500 .msg_namelen = sizeof(nladdr),
2501 .msg_iov = iov,
2502 .msg_iovlen = iovlen,
2503 };
2504
2505 if (sendmsg(fd, &msg, 0) < 0) {
2506 close(fd);
2507 return -1;
2508 }
2509
2510 return 0;
2511 }
2512
2513 static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
2514 {
2515 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2516 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2517 char *bc = NULL;
2518 int bclen;
2519 struct msghdr msg;
2520 struct rtattr rta;
2521 struct iovec iov[3];
2522 int iovlen = 1;
2523
2524 if (family == PF_UNSPEC)
2525 return tcpdiag_send(fd, protocol, f);
2526
2527 memset(&req.r, 0, sizeof(req.r));
2528 req.r.sdiag_family = family;
2529 req.r.sdiag_protocol = protocol;
2530 req.r.idiag_states = f->states;
2531 if (show_mem) {
2532 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2533 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2534 }
2535
2536 if (show_tcpinfo) {
2537 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2538 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2539 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2540 }
2541
2542 iov[0] = (struct iovec){
2543 .iov_base = &req,
2544 .iov_len = sizeof(req)
2545 };
2546 if (f->f) {
2547 bclen = ssfilter_bytecompile(f->f, &bc);
2548 if (bclen) {
2549 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2550 rta.rta_len = RTA_LENGTH(bclen);
2551 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2552 iov[2] = (struct iovec){ bc, bclen };
2553 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2554 iovlen = 3;
2555 }
2556 }
2557
2558 msg = (struct msghdr) {
2559 .msg_name = (void *)&nladdr,
2560 .msg_namelen = sizeof(nladdr),
2561 .msg_iov = iov,
2562 .msg_iovlen = iovlen,
2563 };
2564
2565 if (sendmsg(fd, &msg, 0) < 0) {
2566 close(fd);
2567 return -1;
2568 }
2569
2570 return 0;
2571 }
2572
2573 struct inet_diag_arg {
2574 struct filter *f;
2575 int protocol;
2576 struct rtnl_handle *rth;
2577 };
2578
2579 static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
2580 {
2581 struct inet_diag_msg *d = NLMSG_DATA(h);
2582 struct inet_diag_arg *diag_arg = arg;
2583 struct rtnl_handle *rth = diag_arg->rth;
2584
2585 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2586
2587 req.nlh.nlmsg_type = SOCK_DESTROY;
2588 req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
2589 req.nlh.nlmsg_seq = ++rth->seq;
2590 req.r.sdiag_family = d->idiag_family;
2591 req.r.sdiag_protocol = diag_arg->protocol;
2592 req.r.id = d->id;
2593
2594 if (diag_arg->protocol == IPPROTO_RAW) {
2595 struct inet_diag_req_raw *raw = (void *)&req.r;
2596
2597 BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
2598 raw->sdiag_raw_protocol = s->raw_prot;
2599 }
2600
2601 return rtnl_talk(rth, &req.nlh, NULL, 0);
2602 }
2603
2604 static int show_one_inet_sock(const struct sockaddr_nl *addr,
2605 struct nlmsghdr *h, void *arg)
2606 {
2607 int err;
2608 struct inet_diag_arg *diag_arg = arg;
2609 struct inet_diag_msg *r = NLMSG_DATA(h);
2610 struct sockstat s = {};
2611
2612 if (!(diag_arg->f->families & (1 << r->idiag_family)))
2613 return 0;
2614
2615 parse_diag_msg(h, &s);
2616 s.type = diag_arg->protocol;
2617
2618 if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
2619 return 0;
2620
2621 if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
2622 if (errno == EOPNOTSUPP || errno == ENOENT) {
2623 /* Socket can't be closed, or is already closed. */
2624 return 0;
2625 } else {
2626 perror("SOCK_DESTROY answers");
2627 return -1;
2628 }
2629 }
2630
2631 err = inet_show_sock(h, &s);
2632 if (err < 0)
2633 return err;
2634
2635 return 0;
2636 }
2637
2638 static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
2639 {
2640 int err = 0;
2641 struct rtnl_handle rth, rth2;
2642 int family = PF_INET;
2643 struct inet_diag_arg arg = { .f = f, .protocol = protocol };
2644
2645 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
2646 return -1;
2647
2648 if (f->kill) {
2649 if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
2650 rtnl_close(&rth);
2651 return -1;
2652 }
2653 arg.rth = &rth2;
2654 }
2655
2656 rth.dump = MAGIC_SEQ;
2657 rth.dump_fp = dump_fp;
2658 if (preferred_family == PF_INET6)
2659 family = PF_INET6;
2660
2661 again:
2662 if ((err = sockdiag_send(family, rth.fd, protocol, f)))
2663 goto Exit;
2664
2665 if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
2666 if (family != PF_UNSPEC) {
2667 family = PF_UNSPEC;
2668 goto again;
2669 }
2670 goto Exit;
2671 }
2672 if (family == PF_INET && preferred_family != PF_INET) {
2673 family = PF_INET6;
2674 goto again;
2675 }
2676
2677 Exit:
2678 rtnl_close(&rth);
2679 if (arg.rth)
2680 rtnl_close(arg.rth);
2681 return err;
2682 }
2683
2684 static int tcp_show_netlink_file(struct filter *f)
2685 {
2686 FILE *fp;
2687 char buf[16384];
2688
2689 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
2690 perror("fopen($TCPDIAG_FILE)");
2691 return -1;
2692 }
2693
2694 while (1) {
2695 int status, err;
2696 struct nlmsghdr *h = (struct nlmsghdr *)buf;
2697 struct sockstat s = {};
2698
2699 status = fread(buf, 1, sizeof(*h), fp);
2700 if (status < 0) {
2701 perror("Reading header from $TCPDIAG_FILE");
2702 return -1;
2703 }
2704 if (status != sizeof(*h)) {
2705 perror("Unexpected EOF reading $TCPDIAG_FILE");
2706 return -1;
2707 }
2708
2709 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
2710
2711 if (status < 0) {
2712 perror("Reading $TCPDIAG_FILE");
2713 return -1;
2714 }
2715 if (status + sizeof(*h) < h->nlmsg_len) {
2716 perror("Unexpected EOF reading $TCPDIAG_FILE");
2717 return -1;
2718 }
2719
2720 /* The only legal exit point */
2721 if (h->nlmsg_type == NLMSG_DONE)
2722 return 0;
2723
2724 if (h->nlmsg_type == NLMSG_ERROR) {
2725 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
2726
2727 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2728 fprintf(stderr, "ERROR truncated\n");
2729 } else {
2730 errno = -err->error;
2731 perror("TCPDIAG answered");
2732 }
2733 return -1;
2734 }
2735
2736 parse_diag_msg(h, &s);
2737 s.type = IPPROTO_TCP;
2738
2739 if (f && f->f && run_ssfilter(f->f, &s) == 0)
2740 continue;
2741
2742 err = inet_show_sock(h, &s);
2743 if (err < 0)
2744 return err;
2745 }
2746 }
2747
2748 static int tcp_show(struct filter *f, int socktype)
2749 {
2750 FILE *fp = NULL;
2751 char *buf = NULL;
2752 int bufsize = 64*1024;
2753
2754 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2755 return 0;
2756
2757 dg_proto = TCP_PROTO;
2758
2759 if (getenv("TCPDIAG_FILE"))
2760 return tcp_show_netlink_file(f);
2761
2762 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
2763 && inet_show_netlink(f, NULL, socktype) == 0)
2764 return 0;
2765
2766 /* Sigh... We have to parse /proc/net/tcp... */
2767
2768
2769 /* Estimate amount of sockets and try to allocate
2770 * huge buffer to read all the table at one read.
2771 * Limit it by 16MB though. The assumption is: as soon as
2772 * kernel was able to hold information about N connections,
2773 * it is able to give us some memory for snapshot.
2774 */
2775 if (1) {
2776 get_slabstat(&slabstat);
2777
2778 int guess = slabstat.socks+slabstat.tcp_syns;
2779
2780 if (f->states&(1<<SS_TIME_WAIT))
2781 guess += slabstat.tcp_tws;
2782 if (guess > (16*1024*1024)/128)
2783 guess = (16*1024*1024)/128;
2784 guess *= 128;
2785 if (guess > bufsize)
2786 bufsize = guess;
2787 }
2788 while (bufsize >= 64*1024) {
2789 if ((buf = malloc(bufsize)) != NULL)
2790 break;
2791 bufsize /= 2;
2792 }
2793 if (buf == NULL) {
2794 errno = ENOMEM;
2795 return -1;
2796 }
2797
2798 if (f->families & (1<<AF_INET)) {
2799 if ((fp = net_tcp_open()) == NULL)
2800 goto outerr;
2801
2802 setbuffer(fp, buf, bufsize);
2803 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
2804 goto outerr;
2805 fclose(fp);
2806 }
2807
2808 if ((f->families & (1<<AF_INET6)) &&
2809 (fp = net_tcp6_open()) != NULL) {
2810 setbuffer(fp, buf, bufsize);
2811 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
2812 goto outerr;
2813 fclose(fp);
2814 }
2815
2816 free(buf);
2817 return 0;
2818
2819 outerr:
2820 do {
2821 int saved_errno = errno;
2822
2823 free(buf);
2824 if (fp)
2825 fclose(fp);
2826 errno = saved_errno;
2827 return -1;
2828 } while (0);
2829 }
2830
2831 static int sctp_show(struct filter *f)
2832 {
2833 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2834 return 0;
2835
2836 if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
2837 && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
2838 return 0;
2839
2840 return 0;
2841 }
2842
2843 static int dgram_show_line(char *line, const struct filter *f, int family)
2844 {
2845 struct sockstat s = {};
2846 char *loc, *rem, *data;
2847 char opt[256];
2848 int n;
2849
2850 if (proc_inet_split_line(line, &loc, &rem, &data))
2851 return -1;
2852
2853 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2854
2855 if (!(f->states & (1 << state)))
2856 return 0;
2857
2858 proc_parse_inet_addr(loc, rem, family, &s);
2859
2860 if (f->f && run_ssfilter(f->f, &s) == 0)
2861 return 0;
2862
2863 opt[0] = 0;
2864 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
2865 &s.state, &s.wq, &s.rq,
2866 &s.uid, &s.ino,
2867 &s.refcnt, &s.sk, opt);
2868
2869 if (n < 9)
2870 opt[0] = 0;
2871
2872 s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
2873 inet_stats_print(&s);
2874
2875 if (show_details && opt[0])
2876 printf(" opt:\"%s\"", opt);
2877
2878 printf("\n");
2879 return 0;
2880 }
2881
2882 static int udp_show(struct filter *f)
2883 {
2884 FILE *fp = NULL;
2885
2886 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2887 return 0;
2888
2889 dg_proto = UDP_PROTO;
2890
2891 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
2892 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
2893 return 0;
2894
2895 if (f->families&(1<<AF_INET)) {
2896 if ((fp = net_udp_open()) == NULL)
2897 goto outerr;
2898 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2899 goto outerr;
2900 fclose(fp);
2901 }
2902
2903 if ((f->families&(1<<AF_INET6)) &&
2904 (fp = net_udp6_open()) != NULL) {
2905 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2906 goto outerr;
2907 fclose(fp);
2908 }
2909 return 0;
2910
2911 outerr:
2912 do {
2913 int saved_errno = errno;
2914
2915 if (fp)
2916 fclose(fp);
2917 errno = saved_errno;
2918 return -1;
2919 } while (0);
2920 }
2921
2922 static int raw_show(struct filter *f)
2923 {
2924 FILE *fp = NULL;
2925
2926 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2927 return 0;
2928
2929 dg_proto = RAW_PROTO;
2930
2931 if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
2932 inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
2933 return 0;
2934
2935 if (f->families&(1<<AF_INET)) {
2936 if ((fp = net_raw_open()) == NULL)
2937 goto outerr;
2938 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2939 goto outerr;
2940 fclose(fp);
2941 }
2942
2943 if ((f->families&(1<<AF_INET6)) &&
2944 (fp = net_raw6_open()) != NULL) {
2945 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2946 goto outerr;
2947 fclose(fp);
2948 }
2949 return 0;
2950
2951 outerr:
2952 do {
2953 int saved_errno = errno;
2954
2955 if (fp)
2956 fclose(fp);
2957 errno = saved_errno;
2958 return -1;
2959 } while (0);
2960 }
2961
2962 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
2963 SS_ESTABLISHED, SS_CLOSING };
2964
2965 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
2966
2967 static void unix_list_drop_first(struct sockstat **list)
2968 {
2969 struct sockstat *s = *list;
2970
2971 (*list) = (*list)->next;
2972 free(s->name);
2973 free(s);
2974 }
2975
2976 static bool unix_type_skip(struct sockstat *s, struct filter *f)
2977 {
2978 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
2979 return true;
2980 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
2981 return true;
2982 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
2983 return true;
2984 return false;
2985 }
2986
2987 static void unix_stats_print(struct sockstat *s, struct filter *f)
2988 {
2989 char port_name[30] = {};
2990
2991 sock_state_print(s);
2992
2993 sock_addr_print(s->name ?: "*", " ",
2994 int_to_str(s->lport, port_name), NULL);
2995 sock_addr_print(s->peer_name ?: "*", " ",
2996 int_to_str(s->rport, port_name), NULL);
2997
2998 proc_ctx_print(s);
2999 }
3000
3001 static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
3002 void *arg)
3003 {
3004 struct filter *f = (struct filter *)arg;
3005 struct unix_diag_msg *r = NLMSG_DATA(nlh);
3006 struct rtattr *tb[UNIX_DIAG_MAX+1];
3007 char name[128];
3008 struct sockstat stat = { .name = "*", .peer_name = "*" };
3009
3010 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
3011 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3012
3013 stat.type = r->udiag_type;
3014 stat.state = r->udiag_state;
3015 stat.ino = stat.lport = r->udiag_ino;
3016 stat.local.family = stat.remote.family = AF_UNIX;
3017
3018 if (unix_type_skip(&stat, f))
3019 return 0;
3020
3021 if (tb[UNIX_DIAG_RQLEN]) {
3022 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
3023
3024 stat.rq = rql->udiag_rqueue;
3025 stat.wq = rql->udiag_wqueue;
3026 }
3027 if (tb[UNIX_DIAG_NAME]) {
3028 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
3029
3030 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
3031 name[len] = '\0';
3032 if (name[0] == '\0')
3033 for (int i = 0; i < len; i++)
3034 if (name[i] == '\0')
3035 name[i] = '@';
3036 stat.name = &name[0];
3037 memcpy(stat.local.data, &stat.name, sizeof(stat.name));
3038 }
3039 if (tb[UNIX_DIAG_PEER])
3040 stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
3041
3042 if (f->f && run_ssfilter(f->f, &stat) == 0)
3043 return 0;
3044
3045 unix_stats_print(&stat, f);
3046
3047 if (show_mem)
3048 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
3049 if (show_details) {
3050 if (tb[UNIX_DIAG_SHUTDOWN]) {
3051 unsigned char mask;
3052
3053 mask = *(__u8 *)RTA_DATA(tb[UNIX_DIAG_SHUTDOWN]);
3054 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3055 }
3056 }
3057 printf("\n");
3058
3059 return 0;
3060 }
3061
3062 static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
3063 size_t size, rtnl_filter_t show_one_sock)
3064 {
3065 int ret = -1;
3066 struct rtnl_handle rth;
3067
3068 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3069 return -1;
3070
3071 rth.dump = MAGIC_SEQ;
3072
3073 if (rtnl_send(&rth, req, size) < 0)
3074 goto Exit;
3075
3076 if (rtnl_dump_filter(&rth, show_one_sock, f))
3077 goto Exit;
3078
3079 ret = 0;
3080 Exit:
3081 rtnl_close(&rth);
3082 return ret;
3083 }
3084
3085 static int unix_show_netlink(struct filter *f)
3086 {
3087 DIAG_REQUEST(req, struct unix_diag_req r);
3088
3089 req.r.sdiag_family = AF_UNIX;
3090 req.r.udiag_states = f->states;
3091 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
3092 if (show_mem)
3093 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
3094
3095 return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
3096 }
3097
3098 static int unix_show(struct filter *f)
3099 {
3100 FILE *fp;
3101 char buf[256];
3102 char name[128];
3103 int newformat = 0;
3104 int cnt;
3105 struct sockstat *list = NULL;
3106
3107 if (!filter_af_get(f, AF_UNIX))
3108 return 0;
3109
3110 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
3111 && unix_show_netlink(f) == 0)
3112 return 0;
3113
3114 if ((fp = net_unix_open()) == NULL)
3115 return -1;
3116 if (!fgets(buf, sizeof(buf), fp)) {
3117 fclose(fp);
3118 return -1;
3119 }
3120
3121 if (memcmp(buf, "Peer", 4) == 0)
3122 newformat = 1;
3123 cnt = 0;
3124
3125 while (fgets(buf, sizeof(buf), fp)) {
3126 struct sockstat *u, **insp;
3127 int flags;
3128
3129 if (!(u = calloc(1, sizeof(*u))))
3130 break;
3131 u->name = NULL;
3132 u->peer_name = NULL;
3133
3134 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
3135 &u->rport, &u->rq, &u->wq, &flags, &u->type,
3136 &u->state, &u->ino, name) < 8)
3137 name[0] = 0;
3138
3139 u->lport = u->ino;
3140 u->local.family = u->remote.family = AF_UNIX;
3141
3142 if (flags & (1 << 16)) {
3143 u->state = SS_LISTEN;
3144 } else {
3145 u->state = unix_state_map[u->state-1];
3146 if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
3147 u->state = SS_ESTABLISHED;
3148 }
3149 if (unix_type_skip(u, f) ||
3150 !(f->states & (1 << u->state))) {
3151 free(u);
3152 continue;
3153 }
3154
3155 if (!newformat) {
3156 u->rport = 0;
3157 u->rq = 0;
3158 u->wq = 0;
3159 }
3160
3161 if (name[0]) {
3162 u->name = strdup(name);
3163 if (!u->name)
3164 break;
3165 }
3166
3167 if (u->rport) {
3168 struct sockstat *p;
3169
3170 for (p = list; p; p = p->next) {
3171 if (u->rport == p->lport)
3172 break;
3173 }
3174 if (!p)
3175 u->peer_name = "?";
3176 else
3177 u->peer_name = p->name ? : "*";
3178 }
3179
3180 if (f->f) {
3181 struct sockstat st = {
3182 .local.family = AF_UNIX,
3183 .remote.family = AF_UNIX,
3184 };
3185
3186 memcpy(st.local.data, &u->name, sizeof(u->name));
3187 if (strcmp(u->peer_name, "*"))
3188 memcpy(st.remote.data, &u->peer_name,
3189 sizeof(u->peer_name));
3190 if (run_ssfilter(f->f, &st) == 0) {
3191 free(u->name);
3192 free(u);
3193 continue;
3194 }
3195 }
3196
3197 insp = &list;
3198 while (*insp) {
3199 if (u->type < (*insp)->type ||
3200 (u->type == (*insp)->type &&
3201 u->ino < (*insp)->ino))
3202 break;
3203 insp = &(*insp)->next;
3204 }
3205 u->next = *insp;
3206 *insp = u;
3207
3208 if (++cnt > MAX_UNIX_REMEMBER) {
3209 while (list) {
3210 unix_stats_print(list, f);
3211 printf("\n");
3212
3213 unix_list_drop_first(&list);
3214 }
3215 cnt = 0;
3216 }
3217 }
3218 fclose(fp);
3219 while (list) {
3220 unix_stats_print(list, f);
3221 printf("\n");
3222
3223 unix_list_drop_first(&list);
3224 }
3225
3226 return 0;
3227 }
3228
3229 static int packet_stats_print(struct sockstat *s, const struct filter *f)
3230 {
3231 const char *addr, *port;
3232 char ll_name[16];
3233
3234 s->local.family = s->remote.family = AF_PACKET;
3235
3236 if (f->f) {
3237 s->local.data[0] = s->prot;
3238 if (run_ssfilter(f->f, s) == 0)
3239 return 1;
3240 }
3241
3242 sock_state_print(s);
3243
3244 if (s->prot == 3)
3245 addr = "*";
3246 else
3247 addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
3248
3249 if (s->iface == 0)
3250 port = "*";
3251 else
3252 port = xll_index_to_name(s->iface);
3253
3254 sock_addr_print(addr, ":", port, NULL);
3255 sock_addr_print("", "*", "", NULL);
3256
3257 proc_ctx_print(s);
3258
3259 if (show_details)
3260 sock_details_print(s);
3261
3262 return 0;
3263 }
3264
3265 static void packet_show_ring(struct packet_diag_ring *ring)
3266 {
3267 printf("blk_size:%d", ring->pdr_block_size);
3268 printf(",blk_nr:%d", ring->pdr_block_nr);
3269 printf(",frm_size:%d", ring->pdr_frame_size);
3270 printf(",frm_nr:%d", ring->pdr_frame_nr);
3271 printf(",tmo:%d", ring->pdr_retire_tmo);
3272 printf(",features:0x%x", ring->pdr_features);
3273 }
3274
3275 static int packet_show_sock(const struct sockaddr_nl *addr,
3276 struct nlmsghdr *nlh, void *arg)
3277 {
3278 const struct filter *f = arg;
3279 struct packet_diag_msg *r = NLMSG_DATA(nlh);
3280 struct packet_diag_info *pinfo = NULL;
3281 struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
3282 struct rtattr *tb[PACKET_DIAG_MAX+1];
3283 struct sockstat stat = {};
3284 uint32_t fanout = 0;
3285 bool has_fanout = false;
3286
3287 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
3288 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3289
3290 /* use /proc/net/packet if all info are not available */
3291 if (!tb[PACKET_DIAG_MEMINFO])
3292 return -1;
3293
3294 stat.type = r->pdiag_type;
3295 stat.prot = r->pdiag_num;
3296 stat.ino = r->pdiag_ino;
3297 stat.state = SS_CLOSE;
3298 stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
3299
3300 if (tb[PACKET_DIAG_MEMINFO]) {
3301 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
3302
3303 stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3304 }
3305
3306 if (tb[PACKET_DIAG_INFO]) {
3307 pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
3308 stat.lport = stat.iface = pinfo->pdi_index;
3309 }
3310
3311 if (tb[PACKET_DIAG_UID])
3312 stat.uid = *(__u32 *)RTA_DATA(tb[PACKET_DIAG_UID]);
3313
3314 if (tb[PACKET_DIAG_RX_RING])
3315 ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
3316
3317 if (tb[PACKET_DIAG_TX_RING])
3318 ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
3319
3320 if (tb[PACKET_DIAG_FANOUT]) {
3321 has_fanout = true;
3322 fanout = *(uint32_t *)RTA_DATA(tb[PACKET_DIAG_FANOUT]);
3323 }
3324
3325 if (packet_stats_print(&stat, f))
3326 return 0;
3327
3328 if (show_details) {
3329 if (pinfo) {
3330 printf("\n\tver:%d", pinfo->pdi_version);
3331 printf(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
3332 printf(" flags( ");
3333 if (pinfo->pdi_flags & PDI_RUNNING)
3334 printf("running");
3335 if (pinfo->pdi_flags & PDI_AUXDATA)
3336 printf(" auxdata");
3337 if (pinfo->pdi_flags & PDI_ORIGDEV)
3338 printf(" origdev");
3339 if (pinfo->pdi_flags & PDI_VNETHDR)
3340 printf(" vnethdr");
3341 if (pinfo->pdi_flags & PDI_LOSS)
3342 printf(" loss");
3343 if (!pinfo->pdi_flags)
3344 printf("0");
3345 printf(" )");
3346 }
3347 if (ring_rx) {
3348 printf("\n\tring_rx(");
3349 packet_show_ring(ring_rx);
3350 printf(")");
3351 }
3352 if (ring_tx) {
3353 printf("\n\tring_tx(");
3354 packet_show_ring(ring_tx);
3355 printf(")");
3356 }
3357 if (has_fanout) {
3358 uint16_t type = (fanout >> 16) & 0xffff;
3359
3360 printf("\n\tfanout(");
3361 printf("id:%d,", fanout & 0xffff);
3362 printf("type:");
3363
3364 if (type == 0)
3365 printf("hash");
3366 else if (type == 1)
3367 printf("lb");
3368 else if (type == 2)
3369 printf("cpu");
3370 else if (type == 3)
3371 printf("roll");
3372 else if (type == 4)
3373 printf("random");
3374 else if (type == 5)
3375 printf("qm");
3376 else
3377 printf("0x%x", type);
3378
3379 printf(")");
3380 }
3381 }
3382
3383 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
3384 struct sock_filter *fil =
3385 RTA_DATA(tb[PACKET_DIAG_FILTER]);
3386 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
3387 sizeof(struct sock_filter);
3388
3389 printf("\n\tbpf filter (%d): ", num);
3390 while (num) {
3391 printf(" 0x%02x %u %u %u,",
3392 fil->code, fil->jt, fil->jf, fil->k);
3393 num--;
3394 fil++;
3395 }
3396 }
3397 printf("\n");
3398 return 0;
3399 }
3400
3401 static int packet_show_netlink(struct filter *f)
3402 {
3403 DIAG_REQUEST(req, struct packet_diag_req r);
3404
3405 req.r.sdiag_family = AF_PACKET;
3406 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
3407 PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
3408
3409 return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
3410 }
3411
3412 static int packet_show_line(char *buf, const struct filter *f, int fam)
3413 {
3414 unsigned long long sk;
3415 struct sockstat stat = {};
3416 int type, prot, iface, state, rq, uid, ino;
3417
3418 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
3419 &sk,
3420 &type, &prot, &iface, &state,
3421 &rq, &uid, &ino);
3422
3423 if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
3424 return 0;
3425 if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
3426 return 0;
3427
3428 stat.type = type;
3429 stat.prot = prot;
3430 stat.lport = stat.iface = iface;
3431 stat.state = state;
3432 stat.rq = rq;
3433 stat.uid = uid;
3434 stat.ino = ino;
3435 stat.state = SS_CLOSE;
3436
3437 if (packet_stats_print(&stat, f))
3438 return 0;
3439
3440 printf("\n");
3441 return 0;
3442 }
3443
3444 static int packet_show(struct filter *f)
3445 {
3446 FILE *fp;
3447 int rc = 0;
3448
3449 if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
3450 return 0;
3451
3452 if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
3453 packet_show_netlink(f) == 0)
3454 return 0;
3455
3456 if ((fp = net_packet_open()) == NULL)
3457 return -1;
3458 if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
3459 rc = -1;
3460
3461 fclose(fp);
3462 return rc;
3463 }
3464
3465 static int netlink_show_one(struct filter *f,
3466 int prot, int pid, unsigned int groups,
3467 int state, int dst_pid, unsigned int dst_group,
3468 int rq, int wq,
3469 unsigned long long sk, unsigned long long cb)
3470 {
3471 struct sockstat st;
3472
3473 SPRINT_BUF(prot_buf) = {};
3474 const char *prot_name;
3475 char procname[64] = {};
3476
3477 st.state = SS_CLOSE;
3478 st.rq = rq;
3479 st.wq = wq;
3480 st.local.family = st.remote.family = AF_NETLINK;
3481
3482 if (f->f) {
3483 st.rport = -1;
3484 st.lport = pid;
3485 st.local.data[0] = prot;
3486 if (run_ssfilter(f->f, &st) == 0)
3487 return 1;
3488 }
3489
3490 sock_state_print(&st);
3491
3492 if (resolve_services)
3493 prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
3494 else
3495 prot_name = int_to_str(prot, prot_buf);
3496
3497 if (pid == -1) {
3498 procname[0] = '*';
3499 } else if (resolve_services) {
3500 int done = 0;
3501
3502 if (!pid) {
3503 done = 1;
3504 strncpy(procname, "kernel", 6);
3505 } else if (pid > 0) {
3506 FILE *fp;
3507
3508 snprintf(procname, sizeof(procname), "%s/%d/stat",
3509 getenv("PROC_ROOT") ? : "/proc", pid);
3510 if ((fp = fopen(procname, "r")) != NULL) {
3511 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
3512 snprintf(procname+strlen(procname),
3513 sizeof(procname)-strlen(procname),
3514 "/%d", pid);
3515 done = 1;
3516 }
3517 fclose(fp);
3518 }
3519 }
3520 if (!done)
3521 int_to_str(pid, procname);
3522 } else {
3523 int_to_str(pid, procname);
3524 }
3525
3526 sock_addr_print(prot_name, ":", procname, NULL);
3527
3528 if (state == NETLINK_CONNECTED) {
3529 char dst_group_buf[30];
3530 char dst_pid_buf[30];
3531
3532 sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
3533 int_to_str(dst_pid, dst_pid_buf), NULL);
3534 } else {
3535 sock_addr_print("", "*", "", NULL);
3536 }
3537
3538 char *pid_context = NULL;
3539
3540 if (show_proc_ctx) {
3541 /* The pid value will either be:
3542 * 0 if destination kernel - show kernel initial context.
3543 * A valid process pid - use getpidcon.
3544 * A unique value allocated by the kernel or netlink user
3545 * to the process - show context as "not available".
3546 */
3547 if (!pid)
3548 security_get_initial_context("kernel", &pid_context);
3549 else if (pid > 0)
3550 getpidcon(pid, &pid_context);
3551
3552 if (pid_context != NULL) {
3553 printf("proc_ctx=%-*s ", serv_width, pid_context);
3554 free(pid_context);
3555 } else {
3556 printf("proc_ctx=%-*s ", serv_width, "unavailable");
3557 }
3558 }
3559
3560 if (show_details) {
3561 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
3562 }
3563 printf("\n");
3564
3565 return 0;
3566 }
3567
3568 static int netlink_show_sock(const struct sockaddr_nl *addr,
3569 struct nlmsghdr *nlh, void *arg)
3570 {
3571 struct filter *f = (struct filter *)arg;
3572 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
3573 struct rtattr *tb[NETLINK_DIAG_MAX+1];
3574 int rq = 0, wq = 0;
3575 unsigned long groups = 0;
3576
3577 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
3578 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3579
3580 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
3581 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
3582
3583 if (tb[NETLINK_DIAG_MEMINFO]) {
3584 const __u32 *skmeminfo;
3585
3586 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
3587
3588 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3589 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
3590 }
3591
3592 if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
3593 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
3594 rq, wq, 0, 0)) {
3595 return 0;
3596 }
3597
3598 if (show_mem) {
3599 printf("\t");
3600 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
3601 printf("\n");
3602 }
3603
3604 return 0;
3605 }
3606
3607 static int netlink_show_netlink(struct filter *f)
3608 {
3609 DIAG_REQUEST(req, struct netlink_diag_req r);
3610
3611 req.r.sdiag_family = AF_NETLINK;
3612 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
3613 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
3614
3615 return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
3616 }
3617
3618 static int netlink_show(struct filter *f)
3619 {
3620 FILE *fp;
3621 char buf[256];
3622 int prot, pid;
3623 unsigned int groups;
3624 int rq, wq, rc;
3625 unsigned long long sk, cb;
3626
3627 if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
3628 return 0;
3629
3630 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
3631 netlink_show_netlink(f) == 0)
3632 return 0;
3633
3634 if ((fp = net_netlink_open()) == NULL)
3635 return -1;
3636 if (!fgets(buf, sizeof(buf), fp)) {
3637 fclose(fp);
3638 return -1;
3639 }
3640
3641 while (fgets(buf, sizeof(buf), fp)) {
3642 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
3643 &sk,
3644 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
3645
3646 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
3647 }
3648
3649 fclose(fp);
3650 return 0;
3651 }
3652
3653 struct sock_diag_msg {
3654 __u8 sdiag_family;
3655 };
3656
3657 static int generic_show_sock(const struct sockaddr_nl *addr,
3658 struct nlmsghdr *nlh, void *arg)
3659 {
3660 struct sock_diag_msg *r = NLMSG_DATA(nlh);
3661 struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
3662
3663 switch (r->sdiag_family) {
3664 case AF_INET:
3665 case AF_INET6:
3666 return show_one_inet_sock(addr, nlh, &inet_arg);
3667 case AF_UNIX:
3668 return unix_show_sock(addr, nlh, arg);
3669 case AF_PACKET:
3670 return packet_show_sock(addr, nlh, arg);
3671 case AF_NETLINK:
3672 return netlink_show_sock(addr, nlh, arg);
3673 default:
3674 return -1;
3675 }
3676 }
3677
3678 static int handle_follow_request(struct filter *f)
3679 {
3680 int ret = -1;
3681 int groups = 0;
3682 struct rtnl_handle rth;
3683
3684 if (f->families & (1 << AF_INET) && f->dbs & (1 << TCP_DB))
3685 groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
3686 if (f->families & (1 << AF_INET) && f->dbs & (1 << UDP_DB))
3687 groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
3688 if (f->families & (1 << AF_INET6) && f->dbs & (1 << TCP_DB))
3689 groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
3690 if (f->families & (1 << AF_INET6) && f->dbs & (1 << UDP_DB))
3691 groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
3692
3693 if (groups == 0)
3694 return -1;
3695
3696 if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
3697 return -1;
3698
3699 rth.dump = 0;
3700 rth.local.nl_pid = 0;
3701
3702 if (rtnl_dump_filter(&rth, generic_show_sock, f))
3703 goto Exit;
3704
3705 ret = 0;
3706 Exit:
3707 rtnl_close(&rth);
3708 return ret;
3709 }
3710
3711 struct snmpstat {
3712 int tcp_estab;
3713 };
3714
3715 static int get_snmp_int(char *proto, char *key, int *result)
3716 {
3717 char buf[1024];
3718 FILE *fp;
3719 int protolen = strlen(proto);
3720 int keylen = strlen(key);
3721
3722 *result = 0;
3723
3724 if ((fp = net_snmp_open()) == NULL)
3725 return -1;
3726
3727 while (fgets(buf, sizeof(buf), fp) != NULL) {
3728 char *p = buf;
3729 int pos = 0;
3730
3731 if (memcmp(buf, proto, protolen))
3732 continue;
3733 while ((p = strchr(p, ' ')) != NULL) {
3734 pos++;
3735 p++;
3736 if (memcmp(p, key, keylen) == 0 &&
3737 (p[keylen] == ' ' || p[keylen] == '\n'))
3738 break;
3739 }
3740 if (fgets(buf, sizeof(buf), fp) == NULL)
3741 break;
3742 if (memcmp(buf, proto, protolen))
3743 break;
3744 p = buf;
3745 while ((p = strchr(p, ' ')) != NULL) {
3746 p++;
3747 if (--pos == 0) {
3748 sscanf(p, "%d", result);
3749 fclose(fp);
3750 return 0;
3751 }
3752 }
3753 }
3754
3755 fclose(fp);
3756 errno = ESRCH;
3757 return -1;
3758 }
3759
3760
3761 /* Get stats from sockstat */
3762
3763 struct ssummary {
3764 int socks;
3765 int tcp_mem;
3766 int tcp_total;
3767 int tcp_orphans;
3768 int tcp_tws;
3769 int tcp4_hashed;
3770 int udp4;
3771 int raw4;
3772 int frag4;
3773 int frag4_mem;
3774 int tcp6_hashed;
3775 int udp6;
3776 int raw6;
3777 int frag6;
3778 int frag6_mem;
3779 };
3780
3781 static void get_sockstat_line(char *line, struct ssummary *s)
3782 {
3783 char id[256], rem[256];
3784
3785 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
3786 return;
3787
3788 if (strcmp(id, "sockets:") == 0)
3789 sscanf(rem, "%*s%d", &s->socks);
3790 else if (strcmp(id, "UDP:") == 0)
3791 sscanf(rem, "%*s%d", &s->udp4);
3792 else if (strcmp(id, "UDP6:") == 0)
3793 sscanf(rem, "%*s%d", &s->udp6);
3794 else if (strcmp(id, "RAW:") == 0)
3795 sscanf(rem, "%*s%d", &s->raw4);
3796 else if (strcmp(id, "RAW6:") == 0)
3797 sscanf(rem, "%*s%d", &s->raw6);
3798 else if (strcmp(id, "TCP6:") == 0)
3799 sscanf(rem, "%*s%d", &s->tcp6_hashed);
3800 else if (strcmp(id, "FRAG:") == 0)
3801 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
3802 else if (strcmp(id, "FRAG6:") == 0)
3803 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
3804 else if (strcmp(id, "TCP:") == 0)
3805 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
3806 &s->tcp4_hashed,
3807 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
3808 }
3809
3810 static int get_sockstat(struct ssummary *s)
3811 {
3812 char buf[256];
3813 FILE *fp;
3814
3815 memset(s, 0, sizeof(*s));
3816
3817 if ((fp = net_sockstat_open()) == NULL)
3818 return -1;
3819 while (fgets(buf, sizeof(buf), fp) != NULL)
3820 get_sockstat_line(buf, s);
3821 fclose(fp);
3822
3823 if ((fp = net_sockstat6_open()) == NULL)
3824 return 0;
3825 while (fgets(buf, sizeof(buf), fp) != NULL)
3826 get_sockstat_line(buf, s);
3827 fclose(fp);
3828
3829 return 0;
3830 }
3831
3832 static int print_summary(void)
3833 {
3834 struct ssummary s;
3835 struct snmpstat sn;
3836
3837 if (get_sockstat(&s) < 0)
3838 perror("ss: get_sockstat");
3839 if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
3840 perror("ss: get_snmpstat");
3841
3842 get_slabstat(&slabstat);
3843
3844 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
3845
3846 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
3847 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
3848 sn.tcp_estab,
3849 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
3850 s.tcp_orphans,
3851 slabstat.tcp_syns,
3852 s.tcp_tws, slabstat.tcp_tws,
3853 slabstat.tcp_ports
3854 );
3855
3856 printf("\n");
3857 printf("Transport Total IP IPv6\n");
3858 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
3859 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
3860 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
3861 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
3862 printf("INET %-9d %-9d %-9d\n",
3863 s.raw4+s.udp4+s.tcp4_hashed+
3864 s.raw6+s.udp6+s.tcp6_hashed,
3865 s.raw4+s.udp4+s.tcp4_hashed,
3866 s.raw6+s.udp6+s.tcp6_hashed);
3867 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
3868
3869 printf("\n");
3870
3871 return 0;
3872 }
3873
3874 static void _usage(FILE *dest)
3875 {
3876 fprintf(dest,
3877 "Usage: ss [ OPTIONS ]\n"
3878 " ss [ OPTIONS ] [ FILTER ]\n"
3879 " -h, --help this message\n"
3880 " -V, --version output version information\n"
3881 " -n, --numeric don't resolve service names\n"
3882 " -r, --resolve resolve host names\n"
3883 " -a, --all display all sockets\n"
3884 " -l, --listening display listening sockets\n"
3885 " -o, --options show timer information\n"
3886 " -e, --extended show detailed socket information\n"
3887 " -m, --memory show socket memory usage\n"
3888 " -p, --processes show process using socket\n"
3889 " -i, --info show internal TCP information\n"
3890 " -s, --summary show socket usage summary\n"
3891 " -b, --bpf show bpf filter socket information\n"
3892 " -E, --events continually display sockets as they are destroyed\n"
3893 " -Z, --context display process SELinux security contexts\n"
3894 " -z, --contexts display process and socket SELinux security contexts\n"
3895 " -N, --net switch to the specified network namespace name\n"
3896 "\n"
3897 " -4, --ipv4 display only IP version 4 sockets\n"
3898 " -6, --ipv6 display only IP version 6 sockets\n"
3899 " -0, --packet display PACKET sockets\n"
3900 " -t, --tcp display only TCP sockets\n"
3901 " -S, --sctp display only SCTP sockets\n"
3902 " -u, --udp display only UDP sockets\n"
3903 " -d, --dccp display only DCCP sockets\n"
3904 " -w, --raw display only RAW sockets\n"
3905 " -x, --unix display only Unix domain sockets\n"
3906 " -f, --family=FAMILY display sockets of type FAMILY\n"
3907 " FAMILY := {inet|inet6|link|unix|netlink|help}\n"
3908 "\n"
3909 " -K, --kill forcibly close sockets, display what was closed\n"
3910 " -H, --no-header Suppress header line\n"
3911 "\n"
3912 " -A, --query=QUERY, --socket=QUERY\n"
3913 " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
3914 "\n"
3915 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
3916 " -F, --filter=FILE read filter information from FILE\n"
3917 " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
3918 " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
3919 " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listen|closing}\n"
3920 " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3921 " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3922 " bucket := {syn-recv|time-wait}\n"
3923 " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listen|closing}\n"
3924 );
3925 }
3926
3927 static void help(void) __attribute__((noreturn));
3928 static void help(void)
3929 {
3930 _usage(stdout);
3931 exit(0);
3932 }
3933
3934 static void usage(void) __attribute__((noreturn));
3935 static void usage(void)
3936 {
3937 _usage(stderr);
3938 exit(-1);
3939 }
3940
3941
3942 static int scan_state(const char *state)
3943 {
3944 int i;
3945
3946 if (strcasecmp(state, "close") == 0 ||
3947 strcasecmp(state, "closed") == 0)
3948 return (1<<SS_CLOSE);
3949 if (strcasecmp(state, "syn-rcv") == 0)
3950 return (1<<SS_SYN_RECV);
3951 if (strcasecmp(state, "established") == 0)
3952 return (1<<SS_ESTABLISHED);
3953 if (strcasecmp(state, "all") == 0)
3954 return SS_ALL;
3955 if (strcasecmp(state, "connected") == 0)
3956 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
3957 if (strcasecmp(state, "synchronized") == 0)
3958 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
3959 if (strcasecmp(state, "bucket") == 0)
3960 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
3961 if (strcasecmp(state, "big") == 0)
3962 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
3963 for (i = 0; i < SS_MAX; i++) {
3964 if (strcasecmp(state, sstate_namel[i]) == 0)
3965 return (1<<i);
3966 }
3967
3968 fprintf(stderr, "ss: wrong state name: %s\n", state);
3969 exit(-1);
3970 }
3971
3972 static const struct option long_opts[] = {
3973 { "numeric", 0, 0, 'n' },
3974 { "resolve", 0, 0, 'r' },
3975 { "options", 0, 0, 'o' },
3976 { "extended", 0, 0, 'e' },
3977 { "memory", 0, 0, 'm' },
3978 { "info", 0, 0, 'i' },
3979 { "processes", 0, 0, 'p' },
3980 { "bpf", 0, 0, 'b' },
3981 { "events", 0, 0, 'E' },
3982 { "dccp", 0, 0, 'd' },
3983 { "tcp", 0, 0, 't' },
3984 { "sctp", 0, 0, 'S' },
3985 { "udp", 0, 0, 'u' },
3986 { "raw", 0, 0, 'w' },
3987 { "unix", 0, 0, 'x' },
3988 { "all", 0, 0, 'a' },
3989 { "listening", 0, 0, 'l' },
3990 { "ipv4", 0, 0, '4' },
3991 { "ipv6", 0, 0, '6' },
3992 { "packet", 0, 0, '0' },
3993 { "family", 1, 0, 'f' },
3994 { "socket", 1, 0, 'A' },
3995 { "query", 1, 0, 'A' },
3996 { "summary", 0, 0, 's' },
3997 { "diag", 1, 0, 'D' },
3998 { "filter", 1, 0, 'F' },
3999 { "version", 0, 0, 'V' },
4000 { "help", 0, 0, 'h' },
4001 { "context", 0, 0, 'Z' },
4002 { "contexts", 0, 0, 'z' },
4003 { "net", 1, 0, 'N' },
4004 { "kill", 0, 0, 'K' },
4005 { "no-header", 0, 0, 'H' },
4006 { 0 }
4007
4008 };
4009
4010 int main(int argc, char *argv[])
4011 {
4012 int saw_states = 0;
4013 int saw_query = 0;
4014 int do_summary = 0;
4015 const char *dump_tcpdiag = NULL;
4016 FILE *filter_fp = NULL;
4017 int ch;
4018 int state_filter = 0;
4019 int addrp_width, screen_width = 80;
4020
4021 while ((ch = getopt_long(argc, argv,
4022 "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
4023 long_opts, NULL)) != EOF) {
4024 switch (ch) {
4025 case 'n':
4026 resolve_services = 0;
4027 break;
4028 case 'r':
4029 resolve_hosts = 1;
4030 break;
4031 case 'o':
4032 show_options = 1;
4033 break;
4034 case 'e':
4035 show_options = 1;
4036 show_details++;
4037 break;
4038 case 'm':
4039 show_mem = 1;
4040 break;
4041 case 'i':
4042 show_tcpinfo = 1;
4043 break;
4044 case 'p':
4045 show_users++;
4046 user_ent_hash_build();
4047 break;
4048 case 'b':
4049 show_options = 1;
4050 show_bpf++;
4051 break;
4052 case 'E':
4053 follow_events = 1;
4054 break;
4055 case 'd':
4056 filter_db_set(&current_filter, DCCP_DB);
4057 break;
4058 case 't':
4059 filter_db_set(&current_filter, TCP_DB);
4060 break;
4061 case 'S':
4062 filter_db_set(&current_filter, SCTP_DB);
4063 break;
4064 case 'u':
4065 filter_db_set(&current_filter, UDP_DB);
4066 break;
4067 case 'w':
4068 filter_db_set(&current_filter, RAW_DB);
4069 break;
4070 case 'x':
4071 filter_af_set(&current_filter, AF_UNIX);
4072 break;
4073 case 'a':
4074 state_filter = SS_ALL;
4075 break;
4076 case 'l':
4077 state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
4078 break;
4079 case '4':
4080 filter_af_set(&current_filter, AF_INET);
4081 break;
4082 case '6':
4083 filter_af_set(&current_filter, AF_INET6);
4084 break;
4085 case '0':
4086 filter_af_set(&current_filter, AF_PACKET);
4087 break;
4088 case 'f':
4089 if (strcmp(optarg, "inet") == 0)
4090 filter_af_set(&current_filter, AF_INET);
4091 else if (strcmp(optarg, "inet6") == 0)
4092 filter_af_set(&current_filter, AF_INET6);
4093 else if (strcmp(optarg, "link") == 0)
4094 filter_af_set(&current_filter, AF_PACKET);
4095 else if (strcmp(optarg, "unix") == 0)
4096 filter_af_set(&current_filter, AF_UNIX);
4097 else if (strcmp(optarg, "netlink") == 0)
4098 filter_af_set(&current_filter, AF_NETLINK);
4099 else if (strcmp(optarg, "help") == 0)
4100 help();
4101 else {
4102 fprintf(stderr, "ss: \"%s\" is invalid family\n",
4103 optarg);
4104 usage();
4105 }
4106 break;
4107 case 'A':
4108 {
4109 char *p, *p1;
4110
4111 if (!saw_query) {
4112 current_filter.dbs = 0;
4113 state_filter = state_filter ?
4114 state_filter : SS_CONN;
4115 saw_query = 1;
4116 do_default = 0;
4117 }
4118 p = p1 = optarg;
4119 do {
4120 if ((p1 = strchr(p, ',')) != NULL)
4121 *p1 = 0;
4122 if (strcmp(p, "all") == 0) {
4123 filter_default_dbs(&current_filter);
4124 } else if (strcmp(p, "inet") == 0) {
4125 filter_db_set(&current_filter, UDP_DB);
4126 filter_db_set(&current_filter, DCCP_DB);
4127 filter_db_set(&current_filter, TCP_DB);
4128 filter_db_set(&current_filter, SCTP_DB);
4129 filter_db_set(&current_filter, RAW_DB);
4130 } else if (strcmp(p, "udp") == 0) {
4131 filter_db_set(&current_filter, UDP_DB);
4132 } else if (strcmp(p, "dccp") == 0) {
4133 filter_db_set(&current_filter, DCCP_DB);
4134 } else if (strcmp(p, "tcp") == 0) {
4135 filter_db_set(&current_filter, TCP_DB);
4136 } else if (strcmp(p, "sctp") == 0) {
4137 filter_db_set(&current_filter, SCTP_DB);
4138 } else if (strcmp(p, "raw") == 0) {
4139 filter_db_set(&current_filter, RAW_DB);
4140 } else if (strcmp(p, "unix") == 0) {
4141 filter_db_set(&current_filter, UNIX_ST_DB);
4142 filter_db_set(&current_filter, UNIX_DG_DB);
4143 filter_db_set(&current_filter, UNIX_SQ_DB);
4144 } else if (strcasecmp(p, "unix_stream") == 0 ||
4145 strcmp(p, "u_str") == 0) {
4146 filter_db_set(&current_filter, UNIX_ST_DB);
4147 } else if (strcasecmp(p, "unix_dgram") == 0 ||
4148 strcmp(p, "u_dgr") == 0) {
4149 filter_db_set(&current_filter, UNIX_DG_DB);
4150 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
4151 strcmp(p, "u_seq") == 0) {
4152 filter_db_set(&current_filter, UNIX_SQ_DB);
4153 } else if (strcmp(p, "packet") == 0) {
4154 filter_db_set(&current_filter, PACKET_R_DB);
4155 filter_db_set(&current_filter, PACKET_DG_DB);
4156 } else if (strcmp(p, "packet_raw") == 0 ||
4157 strcmp(p, "p_raw") == 0) {
4158 filter_db_set(&current_filter, PACKET_R_DB);
4159 } else if (strcmp(p, "packet_dgram") == 0 ||
4160 strcmp(p, "p_dgr") == 0) {
4161 filter_db_set(&current_filter, PACKET_DG_DB);
4162 } else if (strcmp(p, "netlink") == 0) {
4163 filter_db_set(&current_filter, NETLINK_DB);
4164 } else {
4165 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
4166 usage();
4167 }
4168 p = p1 + 1;
4169 } while (p1);
4170 break;
4171 }
4172 case 's':
4173 do_summary = 1;
4174 break;
4175 case 'D':
4176 dump_tcpdiag = optarg;
4177 break;
4178 case 'F':
4179 if (filter_fp) {
4180 fprintf(stderr, "More than one filter file\n");
4181 exit(-1);
4182 }
4183 if (optarg[0] == '-')
4184 filter_fp = stdin;
4185 else
4186 filter_fp = fopen(optarg, "r");
4187 if (!filter_fp) {
4188 perror("fopen filter file");
4189 exit(-1);
4190 }
4191 break;
4192 case 'v':
4193 case 'V':
4194 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
4195 exit(0);
4196 case 'z':
4197 show_sock_ctx++;
4198 /* fall through */
4199 case 'Z':
4200 if (is_selinux_enabled() <= 0) {
4201 fprintf(stderr, "ss: SELinux is not enabled.\n");
4202 exit(1);
4203 }
4204 show_proc_ctx++;
4205 user_ent_hash_build();
4206 break;
4207 case 'N':
4208 if (netns_switch(optarg))
4209 exit(1);
4210 break;
4211 case 'K':
4212 current_filter.kill = 1;
4213 break;
4214 case 'H':
4215 show_header = 0;
4216 break;
4217 case 'h':
4218 help();
4219 case '?':
4220 default:
4221 usage();
4222 }
4223 }
4224
4225 argc -= optind;
4226 argv += optind;
4227
4228 if (do_summary) {
4229 print_summary();
4230 if (do_default && argc == 0)
4231 exit(0);
4232 }
4233
4234 while (argc > 0) {
4235 if (strcmp(*argv, "state") == 0) {
4236 NEXT_ARG();
4237 if (!saw_states)
4238 state_filter = 0;
4239 state_filter |= scan_state(*argv);
4240 saw_states = 1;
4241 } else if (strcmp(*argv, "exclude") == 0 ||
4242 strcmp(*argv, "excl") == 0) {
4243 NEXT_ARG();
4244 if (!saw_states)
4245 state_filter = SS_ALL;
4246 state_filter &= ~scan_state(*argv);
4247 saw_states = 1;
4248 } else {
4249 break;
4250 }
4251 argc--; argv++;
4252 }
4253
4254 if (do_default) {
4255 state_filter = state_filter ? state_filter : SS_CONN;
4256 filter_default_dbs(&current_filter);
4257 }
4258
4259 filter_states_set(&current_filter, state_filter);
4260 filter_merge_defaults(&current_filter);
4261
4262 if (resolve_services && resolve_hosts &&
4263 (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
4264 init_service_resolver();
4265
4266 if (current_filter.dbs == 0) {
4267 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
4268 exit(0);
4269 }
4270 if (current_filter.families == 0) {
4271 fprintf(stderr, "ss: no families to show with such filter.\n");
4272 exit(0);
4273 }
4274 if (current_filter.states == 0) {
4275 fprintf(stderr, "ss: no socket states to show with such filter.\n");
4276 exit(0);
4277 }
4278
4279 if (dump_tcpdiag) {
4280 FILE *dump_fp = stdout;
4281
4282 if (!(current_filter.dbs & (1<<TCP_DB))) {
4283 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
4284 exit(0);
4285 }
4286 if (dump_tcpdiag[0] != '-') {
4287 dump_fp = fopen(dump_tcpdiag, "w");
4288 if (!dump_tcpdiag) {
4289 perror("fopen dump file");
4290 exit(-1);
4291 }
4292 }
4293 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
4294 fflush(dump_fp);
4295 exit(0);
4296 }
4297
4298 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
4299 usage();
4300
4301 netid_width = 0;
4302 if (current_filter.dbs&(current_filter.dbs-1))
4303 netid_width = 5;
4304
4305 state_width = 0;
4306 if (current_filter.states&(current_filter.states-1))
4307 state_width = 10;
4308
4309 if (isatty(STDOUT_FILENO)) {
4310 struct winsize w;
4311
4312 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
4313 if (w.ws_col > 0)
4314 screen_width = w.ws_col;
4315 }
4316 }
4317
4318 addrp_width = screen_width;
4319 addrp_width -= netid_width+1;
4320 addrp_width -= state_width+1;
4321 addrp_width -= 14;
4322
4323 if (addrp_width&1) {
4324 if (netid_width)
4325 netid_width++;
4326 else if (state_width)
4327 state_width++;
4328 }
4329
4330 addrp_width /= 2;
4331 addrp_width--;
4332
4333 serv_width = resolve_services ? 7 : 5;
4334
4335 if (addrp_width < 15+serv_width+1)
4336 addrp_width = 15+serv_width+1;
4337
4338 addr_width = addrp_width - serv_width - 1;
4339
4340 if (show_header) {
4341 if (netid_width)
4342 printf("%-*s ", netid_width, "Netid");
4343 if (state_width)
4344 printf("%-*s ", state_width, "State");
4345 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
4346 }
4347
4348 /* Make enough space for the local/remote port field */
4349 addr_width -= 13;
4350 serv_width += 13;
4351
4352 if (show_header) {
4353 printf("%*s:%-*s %*s:%-*s\n",
4354 addr_width, "Local Address", serv_width, "Port",
4355 addr_width, "Peer Address", serv_width, "Port");
4356 }
4357
4358 fflush(stdout);
4359
4360 if (follow_events)
4361 exit(handle_follow_request(&current_filter));
4362
4363 if (current_filter.dbs & (1<<NETLINK_DB))
4364 netlink_show(&current_filter);
4365 if (current_filter.dbs & PACKET_DBM)
4366 packet_show(&current_filter);
4367 if (current_filter.dbs & UNIX_DBM)
4368 unix_show(&current_filter);
4369 if (current_filter.dbs & (1<<RAW_DB))
4370 raw_show(&current_filter);
4371 if (current_filter.dbs & (1<<UDP_DB))
4372 udp_show(&current_filter);
4373 if (current_filter.dbs & (1<<TCP_DB))
4374 tcp_show(&current_filter, IPPROTO_TCP);
4375 if (current_filter.dbs & (1<<DCCP_DB))
4376 tcp_show(&current_filter, IPPROTO_DCCP);
4377 if (current_filter.dbs & (1<<SCTP_DB))
4378 sctp_show(&current_filter);
4379
4380 if (show_users || show_proc_ctx || show_sock_ctx)
4381 user_ent_destroy();
4382
4383 return 0;
4384 }
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