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ss: Turn generic_proc_open() wrappers into macros
[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 /* If show_users & show_proc_ctx only do user_ent_hash_build() once */
104 int user_ent_hash_build_init;
105 int follow_events;
106 int sctp_ino;
107
108 int netid_width;
109 int state_width;
110 int addrp_width;
111 int addr_width;
112 int serv_width;
113 int screen_width;
114
115 static const char *TCP_PROTO = "tcp";
116 static const char *SCTP_PROTO = "sctp";
117 static const char *UDP_PROTO = "udp";
118 static const char *RAW_PROTO = "raw";
119 static const char *dg_proto;
120
121 enum {
122 TCP_DB,
123 DCCP_DB,
124 UDP_DB,
125 RAW_DB,
126 UNIX_DG_DB,
127 UNIX_ST_DB,
128 UNIX_SQ_DB,
129 PACKET_DG_DB,
130 PACKET_R_DB,
131 NETLINK_DB,
132 SCTP_DB,
133 MAX_DB
134 };
135
136 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
137 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
138 #define ALL_DB ((1<<MAX_DB)-1)
139 #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
140 #define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
141
142 enum {
143 SS_UNKNOWN,
144 SS_ESTABLISHED,
145 SS_SYN_SENT,
146 SS_SYN_RECV,
147 SS_FIN_WAIT1,
148 SS_FIN_WAIT2,
149 SS_TIME_WAIT,
150 SS_CLOSE,
151 SS_CLOSE_WAIT,
152 SS_LAST_ACK,
153 SS_LISTEN,
154 SS_CLOSING,
155 SS_MAX
156 };
157
158 enum {
159 SCTP_STATE_CLOSED = 0,
160 SCTP_STATE_COOKIE_WAIT = 1,
161 SCTP_STATE_COOKIE_ECHOED = 2,
162 SCTP_STATE_ESTABLISHED = 3,
163 SCTP_STATE_SHUTDOWN_PENDING = 4,
164 SCTP_STATE_SHUTDOWN_SENT = 5,
165 SCTP_STATE_SHUTDOWN_RECEIVED = 6,
166 SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
167 };
168
169 #define SS_ALL ((1 << SS_MAX) - 1)
170 #define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
171
172 #include "ssfilter.h"
173
174 struct filter {
175 int dbs;
176 int states;
177 int families;
178 struct ssfilter *f;
179 bool kill;
180 };
181
182 static const struct filter default_dbs[MAX_DB] = {
183 [TCP_DB] = {
184 .states = SS_CONN,
185 .families = (1 << AF_INET) | (1 << AF_INET6),
186 },
187 [DCCP_DB] = {
188 .states = SS_CONN,
189 .families = (1 << AF_INET) | (1 << AF_INET6),
190 },
191 [UDP_DB] = {
192 .states = (1 << SS_ESTABLISHED),
193 .families = (1 << AF_INET) | (1 << AF_INET6),
194 },
195 [RAW_DB] = {
196 .states = (1 << SS_ESTABLISHED),
197 .families = (1 << AF_INET) | (1 << AF_INET6),
198 },
199 [UNIX_DG_DB] = {
200 .states = (1 << SS_CLOSE),
201 .families = (1 << AF_UNIX),
202 },
203 [UNIX_ST_DB] = {
204 .states = SS_CONN,
205 .families = (1 << AF_UNIX),
206 },
207 [UNIX_SQ_DB] = {
208 .states = SS_CONN,
209 .families = (1 << AF_UNIX),
210 },
211 [PACKET_DG_DB] = {
212 .states = (1 << SS_CLOSE),
213 .families = (1 << AF_PACKET),
214 },
215 [PACKET_R_DB] = {
216 .states = (1 << SS_CLOSE),
217 .families = (1 << AF_PACKET),
218 },
219 [NETLINK_DB] = {
220 .states = (1 << SS_CLOSE),
221 .families = (1 << AF_NETLINK),
222 },
223 [SCTP_DB] = {
224 .states = SS_CONN,
225 .families = (1 << AF_INET) | (1 << AF_INET6),
226 },
227 };
228
229 static const struct filter default_afs[AF_MAX] = {
230 [AF_INET] = {
231 .dbs = INET_DBM,
232 .states = SS_CONN,
233 },
234 [AF_INET6] = {
235 .dbs = INET_DBM,
236 .states = SS_CONN,
237 },
238 [AF_UNIX] = {
239 .dbs = UNIX_DBM,
240 .states = SS_CONN,
241 },
242 [AF_PACKET] = {
243 .dbs = PACKET_DBM,
244 .states = (1 << SS_CLOSE),
245 },
246 [AF_NETLINK] = {
247 .dbs = (1 << NETLINK_DB),
248 .states = (1 << SS_CLOSE),
249 },
250 };
251
252 static int do_default = 1;
253 static struct filter current_filter;
254
255 static void filter_db_set(struct filter *f, int db)
256 {
257 f->states |= default_dbs[db].states;
258 f->dbs |= 1 << db;
259 do_default = 0;
260 }
261
262 static void filter_af_set(struct filter *f, int af)
263 {
264 f->states |= default_afs[af].states;
265 f->families |= 1 << af;
266 do_default = 0;
267 preferred_family = af;
268 }
269
270 static int filter_af_get(struct filter *f, int af)
271 {
272 return f->families & (1 << af);
273 }
274
275 static void filter_default_dbs(struct filter *f)
276 {
277 filter_db_set(f, UDP_DB);
278 filter_db_set(f, DCCP_DB);
279 filter_db_set(f, TCP_DB);
280 filter_db_set(f, RAW_DB);
281 filter_db_set(f, UNIX_ST_DB);
282 filter_db_set(f, UNIX_DG_DB);
283 filter_db_set(f, UNIX_SQ_DB);
284 filter_db_set(f, PACKET_R_DB);
285 filter_db_set(f, PACKET_DG_DB);
286 filter_db_set(f, NETLINK_DB);
287 filter_db_set(f, SCTP_DB);
288 }
289
290 static void filter_states_set(struct filter *f, int states)
291 {
292 if (states)
293 f->states = states;
294 }
295
296 static void filter_merge_defaults(struct filter *f)
297 {
298 int db;
299 int af;
300
301 for (db = 0; db < MAX_DB; db++) {
302 if (!(f->dbs & (1 << db)))
303 continue;
304
305 if (!(default_dbs[db].families & f->families))
306 f->families |= default_dbs[db].families;
307 }
308 for (af = 0; af < AF_MAX; af++) {
309 if (!(f->families & (1 << af)))
310 continue;
311
312 if (!(default_afs[af].dbs & f->dbs))
313 f->dbs |= default_afs[af].dbs;
314 }
315 }
316
317 static FILE *generic_proc_open(const char *env, const char *name)
318 {
319 const char *p = getenv(env);
320 char store[128];
321
322 if (!p) {
323 p = getenv("PROC_ROOT") ? : "/proc";
324 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
325 p = store;
326 }
327
328 return fopen(p, "r");
329 }
330 #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
331 #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
332 #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
333 #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
334 #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
335 #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
336 #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
337 #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
338 "net/packet")
339 #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
340 "net/netlink")
341 #define slabinfo_open() generic_proc_open("PROC_SLABINFO", "slabinfo")
342 #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
343 "net/sockstat")
344 #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
345 "net/sockstat6")
346 #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
347 #define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
348 "sys/net/ipv4/ip_local_port_range")
349
350 struct user_ent {
351 struct user_ent *next;
352 unsigned int ino;
353 int pid;
354 int fd;
355 char *process;
356 char *process_ctx;
357 char *socket_ctx;
358 };
359
360 #define USER_ENT_HASH_SIZE 256
361 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
362
363 static int user_ent_hashfn(unsigned int ino)
364 {
365 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
366
367 return val & (USER_ENT_HASH_SIZE - 1);
368 }
369
370 static void user_ent_add(unsigned int ino, char *process,
371 int pid, int fd,
372 char *proc_ctx,
373 char *sock_ctx)
374 {
375 struct user_ent *p, **pp;
376
377 p = malloc(sizeof(struct user_ent));
378 if (!p) {
379 fprintf(stderr, "ss: failed to malloc buffer\n");
380 abort();
381 }
382 p->next = NULL;
383 p->ino = ino;
384 p->pid = pid;
385 p->fd = fd;
386 p->process = strdup(process);
387 p->process_ctx = strdup(proc_ctx);
388 p->socket_ctx = strdup(sock_ctx);
389
390 pp = &user_ent_hash[user_ent_hashfn(ino)];
391 p->next = *pp;
392 *pp = p;
393 }
394
395 static void user_ent_destroy(void)
396 {
397 struct user_ent *p, *p_next;
398 int cnt = 0;
399
400 while (cnt != USER_ENT_HASH_SIZE) {
401 p = user_ent_hash[cnt];
402 while (p) {
403 free(p->process);
404 free(p->process_ctx);
405 free(p->socket_ctx);
406 p_next = p->next;
407 free(p);
408 p = p_next;
409 }
410 cnt++;
411 }
412 }
413
414 static void user_ent_hash_build(void)
415 {
416 const char *root = getenv("PROC_ROOT") ? : "/proc/";
417 struct dirent *d;
418 char name[1024];
419 int nameoff;
420 DIR *dir;
421 char *pid_context;
422 char *sock_context;
423 const char *no_ctx = "unavailable";
424
425 /* If show_users & show_proc_ctx set only do this once */
426 if (user_ent_hash_build_init != 0)
427 return;
428
429 user_ent_hash_build_init = 1;
430
431 strncpy(name, root, sizeof(name)-1);
432 name[sizeof(name)-1] = 0;
433
434 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
435 strcat(name, "/");
436
437 nameoff = strlen(name);
438
439 dir = opendir(name);
440 if (!dir)
441 return;
442
443 while ((d = readdir(dir)) != NULL) {
444 struct dirent *d1;
445 char process[16];
446 char *p;
447 int pid, pos;
448 DIR *dir1;
449 char crap;
450
451 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
452 continue;
453
454 if (getpidcon(pid, &pid_context) != 0)
455 pid_context = strdup(no_ctx);
456
457 snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
458 pos = strlen(name);
459 if ((dir1 = opendir(name)) == NULL) {
460 free(pid_context);
461 continue;
462 }
463
464 process[0] = '\0';
465 p = process;
466
467 while ((d1 = readdir(dir1)) != NULL) {
468 const char *pattern = "socket:[";
469 unsigned int ino;
470 char lnk[64];
471 int fd;
472 ssize_t link_len;
473 char tmp[1024];
474
475 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
476 continue;
477
478 snprintf(name+pos, sizeof(name) - pos, "%d", fd);
479
480 link_len = readlink(name, lnk, sizeof(lnk)-1);
481 if (link_len == -1)
482 continue;
483 lnk[link_len] = '\0';
484
485 if (strncmp(lnk, pattern, strlen(pattern)))
486 continue;
487
488 sscanf(lnk, "socket:[%u]", &ino);
489
490 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
491 root, pid, d1->d_name);
492
493 if (getfilecon(tmp, &sock_context) <= 0)
494 sock_context = strdup(no_ctx);
495
496 if (*p == '\0') {
497 FILE *fp;
498
499 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
500 root, pid);
501 if ((fp = fopen(tmp, "r")) != NULL) {
502 if (fscanf(fp, "%*d (%[^)])", p) < 1)
503 ; /* ignore */
504 fclose(fp);
505 }
506 }
507 user_ent_add(ino, p, pid, fd,
508 pid_context, sock_context);
509 free(sock_context);
510 }
511 free(pid_context);
512 closedir(dir1);
513 }
514 closedir(dir);
515 }
516
517 enum entry_types {
518 USERS,
519 PROC_CTX,
520 PROC_SOCK_CTX
521 };
522
523 #define ENTRY_BUF_SIZE 512
524 static int find_entry(unsigned int ino, char **buf, int type)
525 {
526 struct user_ent *p;
527 int cnt = 0;
528 char *ptr;
529 char *new_buf;
530 int len, new_buf_len;
531 int buf_used = 0;
532 int buf_len = 0;
533
534 if (!ino)
535 return 0;
536
537 p = user_ent_hash[user_ent_hashfn(ino)];
538 ptr = *buf = NULL;
539 while (p) {
540 if (p->ino != ino)
541 goto next;
542
543 while (1) {
544 ptr = *buf + buf_used;
545 switch (type) {
546 case USERS:
547 len = snprintf(ptr, buf_len - buf_used,
548 "(\"%s\",pid=%d,fd=%d),",
549 p->process, p->pid, p->fd);
550 break;
551 case PROC_CTX:
552 len = snprintf(ptr, buf_len - buf_used,
553 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
554 p->process, p->pid,
555 p->process_ctx, p->fd);
556 break;
557 case PROC_SOCK_CTX:
558 len = snprintf(ptr, buf_len - buf_used,
559 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
560 p->process, p->pid,
561 p->process_ctx, p->fd,
562 p->socket_ctx);
563 break;
564 default:
565 fprintf(stderr, "ss: invalid type: %d\n", type);
566 abort();
567 }
568
569 if (len < 0 || len >= buf_len - buf_used) {
570 new_buf_len = buf_len + ENTRY_BUF_SIZE;
571 new_buf = realloc(*buf, new_buf_len);
572 if (!new_buf) {
573 fprintf(stderr, "ss: failed to malloc buffer\n");
574 abort();
575 }
576 *buf = new_buf;
577 buf_len = new_buf_len;
578 continue;
579 } else {
580 buf_used += len;
581 break;
582 }
583 }
584 cnt++;
585 next:
586 p = p->next;
587 }
588 if (buf_used) {
589 ptr = *buf + buf_used;
590 ptr[-1] = '\0';
591 }
592 return cnt;
593 }
594
595 /* Get stats from slab */
596
597 struct slabstat {
598 int socks;
599 int tcp_ports;
600 int tcp_tws;
601 int tcp_syns;
602 int skbs;
603 };
604
605 static struct slabstat slabstat;
606
607 static const char *slabstat_ids[] = {
608
609 "sock",
610 "tcp_bind_bucket",
611 "tcp_tw_bucket",
612 "tcp_open_request",
613 "skbuff_head_cache",
614 };
615
616 static int get_slabstat(struct slabstat *s)
617 {
618 char buf[256];
619 FILE *fp;
620 int cnt;
621 static int slabstat_valid;
622
623 if (slabstat_valid)
624 return 0;
625
626 memset(s, 0, sizeof(*s));
627
628 fp = slabinfo_open();
629 if (!fp)
630 return -1;
631
632 cnt = sizeof(*s)/sizeof(int);
633
634 if (!fgets(buf, sizeof(buf), fp)) {
635 fclose(fp);
636 return -1;
637 }
638 while (fgets(buf, sizeof(buf), fp) != NULL) {
639 int i;
640
641 for (i = 0; i < ARRAY_SIZE(slabstat_ids); i++) {
642 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
643 sscanf(buf, "%*s%d", ((int *)s) + i);
644 cnt--;
645 break;
646 }
647 }
648 if (cnt <= 0)
649 break;
650 }
651
652 slabstat_valid = 1;
653
654 fclose(fp);
655 return 0;
656 }
657
658 static unsigned long long cookie_sk_get(const uint32_t *cookie)
659 {
660 return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
661 }
662
663 static const char *sstate_name[] = {
664 "UNKNOWN",
665 [SS_ESTABLISHED] = "ESTAB",
666 [SS_SYN_SENT] = "SYN-SENT",
667 [SS_SYN_RECV] = "SYN-RECV",
668 [SS_FIN_WAIT1] = "FIN-WAIT-1",
669 [SS_FIN_WAIT2] = "FIN-WAIT-2",
670 [SS_TIME_WAIT] = "TIME-WAIT",
671 [SS_CLOSE] = "UNCONN",
672 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
673 [SS_LAST_ACK] = "LAST-ACK",
674 [SS_LISTEN] = "LISTEN",
675 [SS_CLOSING] = "CLOSING",
676 };
677
678 static const char *sctp_sstate_name[] = {
679 [SCTP_STATE_CLOSED] = "CLOSED",
680 [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
681 [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
682 [SCTP_STATE_ESTABLISHED] = "ESTAB",
683 [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
684 [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
685 [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
686 [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
687 };
688
689 static const char *sstate_namel[] = {
690 "UNKNOWN",
691 [SS_ESTABLISHED] = "established",
692 [SS_SYN_SENT] = "syn-sent",
693 [SS_SYN_RECV] = "syn-recv",
694 [SS_FIN_WAIT1] = "fin-wait-1",
695 [SS_FIN_WAIT2] = "fin-wait-2",
696 [SS_TIME_WAIT] = "time-wait",
697 [SS_CLOSE] = "unconnected",
698 [SS_CLOSE_WAIT] = "close-wait",
699 [SS_LAST_ACK] = "last-ack",
700 [SS_LISTEN] = "listening",
701 [SS_CLOSING] = "closing",
702 };
703
704 struct sockstat {
705 struct sockstat *next;
706 unsigned int type;
707 uint16_t prot;
708 uint16_t raw_prot;
709 inet_prefix local;
710 inet_prefix remote;
711 int lport;
712 int rport;
713 int state;
714 int rq, wq;
715 unsigned int ino;
716 unsigned int uid;
717 int refcnt;
718 unsigned int iface;
719 unsigned long long sk;
720 char *name;
721 char *peer_name;
722 __u32 mark;
723 };
724
725 struct dctcpstat {
726 unsigned int ce_state;
727 unsigned int alpha;
728 unsigned int ab_ecn;
729 unsigned int ab_tot;
730 bool enabled;
731 };
732
733 struct tcpstat {
734 struct sockstat ss;
735 int timer;
736 int timeout;
737 int probes;
738 char cong_alg[16];
739 double rto, ato, rtt, rttvar;
740 int qack, ssthresh, backoff;
741 double send_bps;
742 int snd_wscale;
743 int rcv_wscale;
744 int mss;
745 unsigned int cwnd;
746 unsigned int lastsnd;
747 unsigned int lastrcv;
748 unsigned int lastack;
749 double pacing_rate;
750 double pacing_rate_max;
751 double delivery_rate;
752 unsigned long long bytes_acked;
753 unsigned long long bytes_received;
754 unsigned int segs_out;
755 unsigned int segs_in;
756 unsigned int data_segs_out;
757 unsigned int data_segs_in;
758 unsigned int unacked;
759 unsigned int retrans;
760 unsigned int retrans_total;
761 unsigned int lost;
762 unsigned int sacked;
763 unsigned int fackets;
764 unsigned int reordering;
765 unsigned int not_sent;
766 double rcv_rtt;
767 double min_rtt;
768 int rcv_space;
769 unsigned long long busy_time;
770 unsigned long long rwnd_limited;
771 unsigned long long sndbuf_limited;
772 bool has_ts_opt;
773 bool has_sack_opt;
774 bool has_ecn_opt;
775 bool has_ecnseen_opt;
776 bool has_fastopen_opt;
777 bool has_wscale_opt;
778 bool app_limited;
779 struct dctcpstat *dctcp;
780 struct tcp_bbr_info *bbr_info;
781 };
782
783 /* SCTP assocs share the same inode number with their parent endpoint. So if we
784 * have seen the inode number before, it must be an assoc instead of the next
785 * endpoint. */
786 static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
787 {
788 if (strcmp(sock_name, "sctp"))
789 return false;
790 if (!sctp_ino || sctp_ino != s->ino)
791 return false;
792 return true;
793 }
794
795 static const char *unix_netid_name(int type)
796 {
797 switch (type) {
798 case SOCK_STREAM:
799 return "u_str";
800 case SOCK_SEQPACKET:
801 return "u_seq";
802 case SOCK_DGRAM:
803 default:
804 return "u_dgr";
805 }
806 }
807
808 static const char *proto_name(int protocol)
809 {
810 switch (protocol) {
811 case 0:
812 return "raw";
813 case IPPROTO_UDP:
814 return "udp";
815 case IPPROTO_TCP:
816 return "tcp";
817 case IPPROTO_SCTP:
818 return "sctp";
819 case IPPROTO_DCCP:
820 return "dccp";
821 }
822
823 return "???";
824 }
825
826 static void sock_state_print(struct sockstat *s)
827 {
828 const char *sock_name;
829
830 switch (s->local.family) {
831 case AF_UNIX:
832 sock_name = unix_netid_name(s->type);
833 break;
834 case AF_INET:
835 case AF_INET6:
836 sock_name = proto_name(s->type);
837 break;
838 case AF_PACKET:
839 sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
840 break;
841 case AF_NETLINK:
842 sock_name = "nl";
843 break;
844 default:
845 sock_name = "unknown";
846 }
847
848 if (netid_width)
849 printf("%-*s ", netid_width,
850 is_sctp_assoc(s, sock_name) ? "" : sock_name);
851 if (state_width) {
852 if (is_sctp_assoc(s, sock_name))
853 printf("`- %-*s ", state_width - 3,
854 sctp_sstate_name[s->state]);
855 else
856 printf("%-*s ", state_width, sstate_name[s->state]);
857 }
858
859 printf("%-6d %-6d ", s->rq, s->wq);
860 }
861
862 static void sock_details_print(struct sockstat *s)
863 {
864 if (s->uid)
865 printf(" uid:%u", s->uid);
866
867 printf(" ino:%u", s->ino);
868 printf(" sk:%llx", s->sk);
869
870 if (s->mark)
871 printf(" fwmark:0x%x", s->mark);
872 }
873
874 static void sock_addr_print_width(int addr_len, const char *addr, char *delim,
875 int port_len, const char *port, const char *ifname)
876 {
877 if (ifname) {
878 printf("%*s%%%s%s%-*s ", addr_len, addr, ifname, delim,
879 port_len, port);
880 } else {
881 printf("%*s%s%-*s ", addr_len, addr, delim, port_len, port);
882 }
883 }
884
885 static void sock_addr_print(const char *addr, char *delim, const char *port,
886 const char *ifname)
887 {
888 sock_addr_print_width(addr_width, addr, delim, serv_width, port, ifname);
889 }
890
891 static const char *tmr_name[] = {
892 "off",
893 "on",
894 "keepalive",
895 "timewait",
896 "persist",
897 "unknown"
898 };
899
900 static const char *print_ms_timer(int timeout)
901 {
902 static char buf[64];
903 int secs, msecs, minutes;
904
905 if (timeout < 0)
906 timeout = 0;
907 secs = timeout/1000;
908 minutes = secs/60;
909 secs = secs%60;
910 msecs = timeout%1000;
911 buf[0] = 0;
912 if (minutes) {
913 msecs = 0;
914 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
915 if (minutes > 9)
916 secs = 0;
917 }
918 if (secs) {
919 if (secs > 9)
920 msecs = 0;
921 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
922 }
923 if (msecs)
924 sprintf(buf+strlen(buf), "%03dms", msecs);
925 return buf;
926 }
927
928 struct scache {
929 struct scache *next;
930 int port;
931 char *name;
932 const char *proto;
933 };
934
935 struct scache *rlist;
936
937 static void init_service_resolver(void)
938 {
939 char buf[128];
940 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
941
942 if (!fp)
943 return;
944
945 if (!fgets(buf, sizeof(buf), fp)) {
946 pclose(fp);
947 return;
948 }
949 while (fgets(buf, sizeof(buf), fp) != NULL) {
950 unsigned int progn, port;
951 char proto[128], prog[128] = "rpc.";
952 struct scache *c;
953
954 if (sscanf(buf, "%u %*d %s %u %s",
955 &progn, proto, &port, prog+4) != 4)
956 continue;
957
958 if (!(c = malloc(sizeof(*c))))
959 continue;
960
961 c->port = port;
962 c->name = strdup(prog);
963 if (strcmp(proto, TCP_PROTO) == 0)
964 c->proto = TCP_PROTO;
965 else if (strcmp(proto, UDP_PROTO) == 0)
966 c->proto = UDP_PROTO;
967 else if (strcmp(proto, SCTP_PROTO) == 0)
968 c->proto = SCTP_PROTO;
969 else
970 c->proto = NULL;
971 c->next = rlist;
972 rlist = c;
973 }
974 pclose(fp);
975 }
976
977 /* Even do not try default linux ephemeral port ranges:
978 * default /etc/services contains so much of useless crap
979 * wouldbe "allocated" to this area that resolution
980 * is really harmful. I shrug each time when seeing
981 * "socks" or "cfinger" in dumps.
982 */
983 static int is_ephemeral(int port)
984 {
985 static int min = 0, max;
986
987 if (!min) {
988 FILE *f = ephemeral_ports_open();
989
990 if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
991 min = 1024;
992 max = 4999;
993 }
994 if (f)
995 fclose(f);
996 }
997 return port >= min && port <= max;
998 }
999
1000
1001 static const char *__resolve_service(int port)
1002 {
1003 struct scache *c;
1004
1005 for (c = rlist; c; c = c->next) {
1006 if (c->port == port && c->proto == dg_proto)
1007 return c->name;
1008 }
1009
1010 if (!is_ephemeral(port)) {
1011 static int notfirst;
1012 struct servent *se;
1013
1014 if (!notfirst) {
1015 setservent(1);
1016 notfirst = 1;
1017 }
1018 se = getservbyport(htons(port), dg_proto);
1019 if (se)
1020 return se->s_name;
1021 }
1022
1023 return NULL;
1024 }
1025
1026 #define SCACHE_BUCKETS 1024
1027 static struct scache *cache_htab[SCACHE_BUCKETS];
1028
1029 static const char *resolve_service(int port)
1030 {
1031 static char buf[128];
1032 struct scache *c;
1033 const char *res;
1034 int hash;
1035
1036 if (port == 0) {
1037 buf[0] = '*';
1038 buf[1] = 0;
1039 return buf;
1040 }
1041
1042 if (!resolve_services)
1043 goto do_numeric;
1044
1045 if (dg_proto == RAW_PROTO)
1046 return inet_proto_n2a(port, buf, sizeof(buf));
1047
1048
1049 hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
1050
1051 for (c = cache_htab[hash]; c; c = c->next) {
1052 if (c->port == port && c->proto == dg_proto)
1053 goto do_cache;
1054 }
1055
1056 c = malloc(sizeof(*c));
1057 if (!c)
1058 goto do_numeric;
1059 res = __resolve_service(port);
1060 c->port = port;
1061 c->name = res ? strdup(res) : NULL;
1062 c->proto = dg_proto;
1063 c->next = cache_htab[hash];
1064 cache_htab[hash] = c;
1065
1066 do_cache:
1067 if (c->name)
1068 return c->name;
1069
1070 do_numeric:
1071 sprintf(buf, "%u", port);
1072 return buf;
1073 }
1074
1075 static void inet_addr_print(const inet_prefix *a, int port, unsigned int ifindex)
1076 {
1077 char buf[1024];
1078 const char *ap = buf;
1079 int est_len = addr_width;
1080 const char *ifname = NULL;
1081
1082 if (a->family == AF_INET) {
1083 if (a->data[0] == 0) {
1084 buf[0] = '*';
1085 buf[1] = 0;
1086 } else {
1087 ap = format_host(AF_INET, 4, a->data);
1088 }
1089 } else {
1090 ap = format_host(a->family, 16, a->data);
1091 est_len = strlen(ap);
1092 if (est_len <= addr_width)
1093 est_len = addr_width;
1094 else
1095 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
1096 }
1097
1098 if (ifindex) {
1099 ifname = ll_index_to_name(ifindex);
1100 est_len -= strlen(ifname) + 1; /* +1 for percent char */
1101 if (est_len < 0)
1102 est_len = 0;
1103 }
1104
1105 sock_addr_print_width(est_len, ap, ":", serv_width, resolve_service(port),
1106 ifname);
1107 }
1108
1109 struct aafilter {
1110 inet_prefix addr;
1111 int port;
1112 unsigned int iface;
1113 __u32 mark;
1114 __u32 mask;
1115 struct aafilter *next;
1116 };
1117
1118 static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
1119 int plen)
1120 {
1121 if (!inet_addr_match(a, p, plen))
1122 return 0;
1123
1124 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
1125 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
1126 * sockets. Fair? */
1127 if (p->family == AF_INET && a->family == AF_INET6) {
1128 if (a->data[0] == 0 && a->data[1] == 0 &&
1129 a->data[2] == htonl(0xffff)) {
1130 inet_prefix tmp = *a;
1131
1132 tmp.data[0] = a->data[3];
1133 return inet_addr_match(&tmp, p, plen);
1134 }
1135 }
1136 return 1;
1137 }
1138
1139 static int unix_match(const inet_prefix *a, const inet_prefix *p)
1140 {
1141 char *addr, *pattern;
1142
1143 memcpy(&addr, a->data, sizeof(addr));
1144 memcpy(&pattern, p->data, sizeof(pattern));
1145 if (pattern == NULL)
1146 return 1;
1147 if (addr == NULL)
1148 addr = "";
1149 return !fnmatch(pattern, addr, 0);
1150 }
1151
1152 static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
1153 {
1154 switch (f->type) {
1155 case SSF_S_AUTO:
1156 {
1157 if (s->local.family == AF_UNIX) {
1158 char *p;
1159
1160 memcpy(&p, s->local.data, sizeof(p));
1161 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
1162 strspn(p+1, "0123456789abcdef") == 5);
1163 }
1164 if (s->local.family == AF_PACKET)
1165 return s->lport == 0 && s->local.data[0] == 0;
1166 if (s->local.family == AF_NETLINK)
1167 return s->lport < 0;
1168
1169 return is_ephemeral(s->lport);
1170 }
1171 case SSF_DCOND:
1172 {
1173 struct aafilter *a = (void *)f->pred;
1174
1175 if (a->addr.family == AF_UNIX)
1176 return unix_match(&s->remote, &a->addr);
1177 if (a->port != -1 && a->port != s->rport)
1178 return 0;
1179 if (a->addr.bitlen) {
1180 do {
1181 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
1182 return 1;
1183 } while ((a = a->next) != NULL);
1184 return 0;
1185 }
1186 return 1;
1187 }
1188 case SSF_SCOND:
1189 {
1190 struct aafilter *a = (void *)f->pred;
1191
1192 if (a->addr.family == AF_UNIX)
1193 return unix_match(&s->local, &a->addr);
1194 if (a->port != -1 && a->port != s->lport)
1195 return 0;
1196 if (a->addr.bitlen) {
1197 do {
1198 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
1199 return 1;
1200 } while ((a = a->next) != NULL);
1201 return 0;
1202 }
1203 return 1;
1204 }
1205 case SSF_D_GE:
1206 {
1207 struct aafilter *a = (void *)f->pred;
1208
1209 return s->rport >= a->port;
1210 }
1211 case SSF_D_LE:
1212 {
1213 struct aafilter *a = (void *)f->pred;
1214
1215 return s->rport <= a->port;
1216 }
1217 case SSF_S_GE:
1218 {
1219 struct aafilter *a = (void *)f->pred;
1220
1221 return s->lport >= a->port;
1222 }
1223 case SSF_S_LE:
1224 {
1225 struct aafilter *a = (void *)f->pred;
1226
1227 return s->lport <= a->port;
1228 }
1229 case SSF_DEVCOND:
1230 {
1231 struct aafilter *a = (void *)f->pred;
1232
1233 return s->iface == a->iface;
1234 }
1235 case SSF_MARKMASK:
1236 {
1237 struct aafilter *a = (void *)f->pred;
1238
1239 return (s->mark & a->mask) == a->mark;
1240 }
1241 /* Yup. It is recursion. Sorry. */
1242 case SSF_AND:
1243 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
1244 case SSF_OR:
1245 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
1246 case SSF_NOT:
1247 return !run_ssfilter(f->pred, s);
1248 default:
1249 abort();
1250 }
1251 }
1252
1253 /* Relocate external jumps by reloc. */
1254 static void ssfilter_patch(char *a, int len, int reloc)
1255 {
1256 while (len > 0) {
1257 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
1258
1259 if (op->no == len+4)
1260 op->no += reloc;
1261 len -= op->yes;
1262 a += op->yes;
1263 }
1264 if (len < 0)
1265 abort();
1266 }
1267
1268 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
1269 {
1270 switch (f->type) {
1271 case SSF_S_AUTO:
1272 {
1273 if (!(*bytecode = malloc(4))) abort();
1274 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
1275 return 4;
1276 }
1277 case SSF_DCOND:
1278 case SSF_SCOND:
1279 {
1280 struct aafilter *a = (void *)f->pred;
1281 struct aafilter *b;
1282 char *ptr;
1283 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
1284 int len = 0;
1285
1286 for (b = a; b; b = b->next) {
1287 len += 4 + sizeof(struct inet_diag_hostcond);
1288 if (a->addr.family == AF_INET6)
1289 len += 16;
1290 else
1291 len += 4;
1292 if (b->next)
1293 len += 4;
1294 }
1295 if (!(ptr = malloc(len))) abort();
1296 *bytecode = ptr;
1297 for (b = a; b; b = b->next) {
1298 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
1299 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
1300 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
1301 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
1302
1303 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
1304 cond->family = a->addr.family;
1305 cond->port = a->port;
1306 cond->prefix_len = a->addr.bitlen;
1307 memcpy(cond->addr, a->addr.data, alen);
1308 ptr += oplen;
1309 if (b->next) {
1310 op = (struct inet_diag_bc_op *)ptr;
1311 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
1312 ptr += 4;
1313 }
1314 }
1315 return ptr - *bytecode;
1316 }
1317 case SSF_D_GE:
1318 {
1319 struct aafilter *x = (void *)f->pred;
1320
1321 if (!(*bytecode = malloc(8))) abort();
1322 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1323 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1324 return 8;
1325 }
1326 case SSF_D_LE:
1327 {
1328 struct aafilter *x = (void *)f->pred;
1329
1330 if (!(*bytecode = malloc(8))) abort();
1331 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1332 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1333 return 8;
1334 }
1335 case SSF_S_GE:
1336 {
1337 struct aafilter *x = (void *)f->pred;
1338
1339 if (!(*bytecode = malloc(8))) abort();
1340 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1341 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1342 return 8;
1343 }
1344 case SSF_S_LE:
1345 {
1346 struct aafilter *x = (void *)f->pred;
1347
1348 if (!(*bytecode = malloc(8))) abort();
1349 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1350 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1351 return 8;
1352 }
1353
1354 case SSF_AND:
1355 {
1356 char *a1 = NULL, *a2 = NULL, *a;
1357 int l1, l2;
1358
1359 l1 = ssfilter_bytecompile(f->pred, &a1);
1360 l2 = ssfilter_bytecompile(f->post, &a2);
1361 if (!l1 || !l2) {
1362 free(a1);
1363 free(a2);
1364 return 0;
1365 }
1366 if (!(a = malloc(l1+l2))) abort();
1367 memcpy(a, a1, l1);
1368 memcpy(a+l1, a2, l2);
1369 free(a1); free(a2);
1370 ssfilter_patch(a, l1, l2);
1371 *bytecode = a;
1372 return l1+l2;
1373 }
1374 case SSF_OR:
1375 {
1376 char *a1 = NULL, *a2 = NULL, *a;
1377 int l1, l2;
1378
1379 l1 = ssfilter_bytecompile(f->pred, &a1);
1380 l2 = ssfilter_bytecompile(f->post, &a2);
1381 if (!l1 || !l2) {
1382 free(a1);
1383 free(a2);
1384 return 0;
1385 }
1386 if (!(a = malloc(l1+l2+4))) abort();
1387 memcpy(a, a1, l1);
1388 memcpy(a+l1+4, a2, l2);
1389 free(a1); free(a2);
1390 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
1391 *bytecode = a;
1392 return l1+l2+4;
1393 }
1394 case SSF_NOT:
1395 {
1396 char *a1 = NULL, *a;
1397 int l1;
1398
1399 l1 = ssfilter_bytecompile(f->pred, &a1);
1400 if (!l1) {
1401 free(a1);
1402 return 0;
1403 }
1404 if (!(a = malloc(l1+4))) abort();
1405 memcpy(a, a1, l1);
1406 free(a1);
1407 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
1408 *bytecode = a;
1409 return l1+4;
1410 }
1411 case SSF_DEVCOND:
1412 {
1413 /* bytecompile for SSF_DEVCOND not supported yet */
1414 return 0;
1415 }
1416 case SSF_MARKMASK:
1417 {
1418 struct aafilter *a = (void *)f->pred;
1419 struct instr {
1420 struct inet_diag_bc_op op;
1421 struct inet_diag_markcond cond;
1422 };
1423 int inslen = sizeof(struct instr);
1424
1425 if (!(*bytecode = malloc(inslen))) abort();
1426 ((struct instr *)*bytecode)[0] = (struct instr) {
1427 { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
1428 { a->mark, a->mask},
1429 };
1430
1431 return inslen;
1432 }
1433 default:
1434 abort();
1435 }
1436 }
1437
1438 static int remember_he(struct aafilter *a, struct hostent *he)
1439 {
1440 char **ptr = he->h_addr_list;
1441 int cnt = 0;
1442 int len;
1443
1444 if (he->h_addrtype == AF_INET)
1445 len = 4;
1446 else if (he->h_addrtype == AF_INET6)
1447 len = 16;
1448 else
1449 return 0;
1450
1451 while (*ptr) {
1452 struct aafilter *b = a;
1453
1454 if (a->addr.bitlen) {
1455 if ((b = malloc(sizeof(*b))) == NULL)
1456 return cnt;
1457 *b = *a;
1458 b->next = a->next;
1459 a->next = b;
1460 }
1461 memcpy(b->addr.data, *ptr, len);
1462 b->addr.bytelen = len;
1463 b->addr.bitlen = len*8;
1464 b->addr.family = he->h_addrtype;
1465 ptr++;
1466 cnt++;
1467 }
1468 return cnt;
1469 }
1470
1471 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
1472 {
1473 static int notfirst;
1474 int cnt = 0;
1475 struct hostent *he;
1476
1477 a->addr.bitlen = 0;
1478 if (!notfirst) {
1479 sethostent(1);
1480 notfirst = 1;
1481 }
1482 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1483 if (he)
1484 cnt = remember_he(a, he);
1485 if (fam == AF_UNSPEC) {
1486 he = gethostbyname2(addr, AF_INET6);
1487 if (he)
1488 cnt += remember_he(a, he);
1489 }
1490 return !cnt;
1491 }
1492
1493 static int xll_initted;
1494
1495 static void xll_init(void)
1496 {
1497 struct rtnl_handle rth;
1498
1499 if (rtnl_open(&rth, 0) < 0)
1500 exit(1);
1501
1502 ll_init_map(&rth);
1503 rtnl_close(&rth);
1504 xll_initted = 1;
1505 }
1506
1507 static const char *xll_index_to_name(int index)
1508 {
1509 if (!xll_initted)
1510 xll_init();
1511 return ll_index_to_name(index);
1512 }
1513
1514 static int xll_name_to_index(const char *dev)
1515 {
1516 if (!xll_initted)
1517 xll_init();
1518 return ll_name_to_index(dev);
1519 }
1520
1521 void *parse_devcond(char *name)
1522 {
1523 struct aafilter a = { .iface = 0 };
1524 struct aafilter *res;
1525
1526 a.iface = xll_name_to_index(name);
1527 if (a.iface == 0) {
1528 char *end;
1529 unsigned long n;
1530
1531 n = strtoul(name, &end, 0);
1532 if (!end || end == name || *end || n > UINT_MAX)
1533 return NULL;
1534
1535 a.iface = n;
1536 }
1537
1538 res = malloc(sizeof(*res));
1539 *res = a;
1540
1541 return res;
1542 }
1543
1544 void *parse_hostcond(char *addr, bool is_port)
1545 {
1546 char *port = NULL;
1547 struct aafilter a = { .port = -1 };
1548 struct aafilter *res;
1549 int fam = preferred_family;
1550 struct filter *f = &current_filter;
1551
1552 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1553 char *p;
1554
1555 a.addr.family = AF_UNIX;
1556 if (strncmp(addr, "unix:", 5) == 0)
1557 addr += 5;
1558 p = strdup(addr);
1559 a.addr.bitlen = 8*strlen(p);
1560 memcpy(a.addr.data, &p, sizeof(p));
1561 fam = AF_UNIX;
1562 goto out;
1563 }
1564
1565 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1566 a.addr.family = AF_PACKET;
1567 a.addr.bitlen = 0;
1568 if (strncmp(addr, "link:", 5) == 0)
1569 addr += 5;
1570 port = strchr(addr, ':');
1571 if (port) {
1572 *port = 0;
1573 if (port[1] && strcmp(port+1, "*")) {
1574 if (get_integer(&a.port, port+1, 0)) {
1575 if ((a.port = xll_name_to_index(port+1)) <= 0)
1576 return NULL;
1577 }
1578 }
1579 }
1580 if (addr[0] && strcmp(addr, "*")) {
1581 unsigned short tmp;
1582
1583 a.addr.bitlen = 32;
1584 if (ll_proto_a2n(&tmp, addr))
1585 return NULL;
1586 a.addr.data[0] = ntohs(tmp);
1587 }
1588 fam = AF_PACKET;
1589 goto out;
1590 }
1591
1592 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1593 a.addr.family = AF_NETLINK;
1594 a.addr.bitlen = 0;
1595 if (strncmp(addr, "netlink:", 8) == 0)
1596 addr += 8;
1597 port = strchr(addr, ':');
1598 if (port) {
1599 *port = 0;
1600 if (port[1] && strcmp(port+1, "*")) {
1601 if (get_integer(&a.port, port+1, 0)) {
1602 if (strcmp(port+1, "kernel") == 0)
1603 a.port = 0;
1604 else
1605 return NULL;
1606 }
1607 }
1608 }
1609 if (addr[0] && strcmp(addr, "*")) {
1610 a.addr.bitlen = 32;
1611 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
1612 return NULL;
1613 }
1614 fam = AF_NETLINK;
1615 goto out;
1616 }
1617
1618 if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
1619 fam = AF_INET;
1620 if (!strncmp(addr, "inet:", 5))
1621 addr += 5;
1622 } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
1623 fam = AF_INET6;
1624 if (!strncmp(addr, "inet6:", 6))
1625 addr += 6;
1626 }
1627
1628 /* URL-like literal [] */
1629 if (addr[0] == '[') {
1630 addr++;
1631 if ((port = strchr(addr, ']')) == NULL)
1632 return NULL;
1633 *port++ = 0;
1634 } else if (addr[0] == '*') {
1635 port = addr+1;
1636 } else {
1637 port = strrchr(strchr(addr, '/') ? : addr, ':');
1638 }
1639
1640 if (is_port)
1641 port = addr;
1642
1643 if (port && *port) {
1644 if (*port == ':')
1645 *port++ = 0;
1646
1647 if (*port && *port != '*') {
1648 if (get_integer(&a.port, port, 0)) {
1649 struct servent *se1 = NULL;
1650 struct servent *se2 = NULL;
1651
1652 if (current_filter.dbs&(1<<UDP_DB))
1653 se1 = getservbyname(port, UDP_PROTO);
1654 if (current_filter.dbs&(1<<TCP_DB))
1655 se2 = getservbyname(port, TCP_PROTO);
1656 if (se1 && se2 && se1->s_port != se2->s_port) {
1657 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1658 return NULL;
1659 }
1660 if (!se1)
1661 se1 = se2;
1662 if (se1) {
1663 a.port = ntohs(se1->s_port);
1664 } else {
1665 struct scache *s;
1666
1667 for (s = rlist; s; s = s->next) {
1668 if ((s->proto == UDP_PROTO &&
1669 (current_filter.dbs&(1<<UDP_DB))) ||
1670 (s->proto == TCP_PROTO &&
1671 (current_filter.dbs&(1<<TCP_DB)))) {
1672 if (s->name && strcmp(s->name, port) == 0) {
1673 if (a.port > 0 && a.port != s->port) {
1674 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1675 return NULL;
1676 }
1677 a.port = s->port;
1678 }
1679 }
1680 }
1681 if (a.port <= 0) {
1682 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1683 return NULL;
1684 }
1685 }
1686 }
1687 }
1688 }
1689 if (!is_port && addr && *addr && *addr != '*') {
1690 if (get_prefix_1(&a.addr, addr, fam)) {
1691 if (get_dns_host(&a, addr, fam)) {
1692 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1693 return NULL;
1694 }
1695 }
1696 }
1697
1698 out:
1699 if (fam != AF_UNSPEC) {
1700 int states = f->states;
1701 f->families = 0;
1702 filter_af_set(f, fam);
1703 filter_states_set(f, states);
1704 }
1705
1706 res = malloc(sizeof(*res));
1707 if (res)
1708 memcpy(res, &a, sizeof(a));
1709 return res;
1710 }
1711
1712 void *parse_markmask(const char *markmask)
1713 {
1714 struct aafilter a, *res;
1715
1716 if (strchr(markmask, '/')) {
1717 if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
1718 return NULL;
1719 } else {
1720 a.mask = 0xffffffff;
1721 if (sscanf(markmask, "%i", &a.mark) != 1)
1722 return NULL;
1723 }
1724
1725 res = malloc(sizeof(*res));
1726 if (res)
1727 memcpy(res, &a, sizeof(a));
1728 return res;
1729 }
1730
1731 static void proc_ctx_print(struct sockstat *s)
1732 {
1733 char *buf;
1734
1735 if (show_proc_ctx || show_sock_ctx) {
1736 if (find_entry(s->ino, &buf,
1737 (show_proc_ctx & show_sock_ctx) ?
1738 PROC_SOCK_CTX : PROC_CTX) > 0) {
1739 printf(" users:(%s)", buf);
1740 free(buf);
1741 }
1742 } else if (show_users) {
1743 if (find_entry(s->ino, &buf, USERS) > 0) {
1744 printf(" users:(%s)", buf);
1745 free(buf);
1746 }
1747 }
1748 }
1749
1750 static void inet_stats_print(struct sockstat *s)
1751 {
1752 sock_state_print(s);
1753
1754 inet_addr_print(&s->local, s->lport, s->iface);
1755 inet_addr_print(&s->remote, s->rport, 0);
1756
1757 proc_ctx_print(s);
1758 }
1759
1760 static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
1761 sockstat * s)
1762 {
1763 s->local.family = s->remote.family = family;
1764 if (family == AF_INET) {
1765 sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
1766 sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
1767 s->local.bytelen = s->remote.bytelen = 4;
1768 return 0;
1769 } else {
1770 sscanf(loc, "%08x%08x%08x%08x:%x",
1771 s->local.data,
1772 s->local.data + 1,
1773 s->local.data + 2,
1774 s->local.data + 3,
1775 &s->lport);
1776 sscanf(rem, "%08x%08x%08x%08x:%x",
1777 s->remote.data,
1778 s->remote.data + 1,
1779 s->remote.data + 2,
1780 s->remote.data + 3,
1781 &s->rport);
1782 s->local.bytelen = s->remote.bytelen = 16;
1783 return 0;
1784 }
1785 return -1;
1786 }
1787
1788 static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
1789 {
1790 char *p;
1791
1792 if ((p = strchr(line, ':')) == NULL)
1793 return -1;
1794
1795 *loc = p+2;
1796 if ((p = strchr(*loc, ':')) == NULL)
1797 return -1;
1798
1799 p[5] = 0;
1800 *rem = p+6;
1801 if ((p = strchr(*rem, ':')) == NULL)
1802 return -1;
1803
1804 p[5] = 0;
1805 *data = p+6;
1806 return 0;
1807 }
1808
1809 static char *sprint_bw(char *buf, double bw)
1810 {
1811 if (bw > 1000000.)
1812 sprintf(buf, "%.1fM", bw / 1000000.);
1813 else if (bw > 1000.)
1814 sprintf(buf, "%.1fK", bw / 1000.);
1815 else
1816 sprintf(buf, "%g", bw);
1817
1818 return buf;
1819 }
1820
1821 static void sctp_stats_print(struct sctp_info *s)
1822 {
1823 if (s->sctpi_tag)
1824 printf(" tag:%x", s->sctpi_tag);
1825 if (s->sctpi_state)
1826 printf(" state:%s", sctp_sstate_name[s->sctpi_state]);
1827 if (s->sctpi_rwnd)
1828 printf(" rwnd:%d", s->sctpi_rwnd);
1829 if (s->sctpi_unackdata)
1830 printf(" unackdata:%d", s->sctpi_unackdata);
1831 if (s->sctpi_penddata)
1832 printf(" penddata:%d", s->sctpi_penddata);
1833 if (s->sctpi_instrms)
1834 printf(" instrms:%d", s->sctpi_instrms);
1835 if (s->sctpi_outstrms)
1836 printf(" outstrms:%d", s->sctpi_outstrms);
1837 if (s->sctpi_inqueue)
1838 printf(" inqueue:%d", s->sctpi_inqueue);
1839 if (s->sctpi_outqueue)
1840 printf(" outqueue:%d", s->sctpi_outqueue);
1841 if (s->sctpi_overall_error)
1842 printf(" overerr:%d", s->sctpi_overall_error);
1843 if (s->sctpi_max_burst)
1844 printf(" maxburst:%d", s->sctpi_max_burst);
1845 if (s->sctpi_maxseg)
1846 printf(" maxseg:%d", s->sctpi_maxseg);
1847 if (s->sctpi_peer_rwnd)
1848 printf(" prwnd:%d", s->sctpi_peer_rwnd);
1849 if (s->sctpi_peer_tag)
1850 printf(" ptag:%x", s->sctpi_peer_tag);
1851 if (s->sctpi_peer_capable)
1852 printf(" pcapable:%d", s->sctpi_peer_capable);
1853 if (s->sctpi_peer_sack)
1854 printf(" psack:%d", s->sctpi_peer_sack);
1855 if (s->sctpi_s_autoclose)
1856 printf(" autoclose:%d", s->sctpi_s_autoclose);
1857 if (s->sctpi_s_adaptation_ind)
1858 printf(" adapind:%d", s->sctpi_s_adaptation_ind);
1859 if (s->sctpi_s_pd_point)
1860 printf(" pdpoint:%d", s->sctpi_s_pd_point);
1861 if (s->sctpi_s_nodelay)
1862 printf(" nodealy:%d", s->sctpi_s_nodelay);
1863 if (s->sctpi_s_disable_fragments)
1864 printf(" nofrag:%d", s->sctpi_s_disable_fragments);
1865 if (s->sctpi_s_v4mapped)
1866 printf(" v4mapped:%d", s->sctpi_s_v4mapped);
1867 if (s->sctpi_s_frag_interleave)
1868 printf(" fraginl:%d", s->sctpi_s_frag_interleave);
1869 }
1870
1871 static void tcp_stats_print(struct tcpstat *s)
1872 {
1873 char b1[64];
1874
1875 if (s->has_ts_opt)
1876 printf(" ts");
1877 if (s->has_sack_opt)
1878 printf(" sack");
1879 if (s->has_ecn_opt)
1880 printf(" ecn");
1881 if (s->has_ecnseen_opt)
1882 printf(" ecnseen");
1883 if (s->has_fastopen_opt)
1884 printf(" fastopen");
1885 if (s->cong_alg[0])
1886 printf(" %s", s->cong_alg);
1887 if (s->has_wscale_opt)
1888 printf(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
1889 if (s->rto)
1890 printf(" rto:%g", s->rto);
1891 if (s->backoff)
1892 printf(" backoff:%u", s->backoff);
1893 if (s->rtt)
1894 printf(" rtt:%g/%g", s->rtt, s->rttvar);
1895 if (s->ato)
1896 printf(" ato:%g", s->ato);
1897
1898 if (s->qack)
1899 printf(" qack:%d", s->qack);
1900 if (s->qack & 1)
1901 printf(" bidir");
1902
1903 if (s->mss)
1904 printf(" mss:%d", s->mss);
1905 if (s->cwnd)
1906 printf(" cwnd:%u", s->cwnd);
1907 if (s->ssthresh)
1908 printf(" ssthresh:%d", s->ssthresh);
1909
1910 if (s->bytes_acked)
1911 printf(" bytes_acked:%llu", s->bytes_acked);
1912 if (s->bytes_received)
1913 printf(" bytes_received:%llu", s->bytes_received);
1914 if (s->segs_out)
1915 printf(" segs_out:%u", s->segs_out);
1916 if (s->segs_in)
1917 printf(" segs_in:%u", s->segs_in);
1918 if (s->data_segs_out)
1919 printf(" data_segs_out:%u", s->data_segs_out);
1920 if (s->data_segs_in)
1921 printf(" data_segs_in:%u", s->data_segs_in);
1922
1923 if (s->dctcp && s->dctcp->enabled) {
1924 struct dctcpstat *dctcp = s->dctcp;
1925
1926 printf(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
1927 dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
1928 dctcp->ab_tot);
1929 } else if (s->dctcp) {
1930 printf(" dctcp:fallback_mode");
1931 }
1932
1933 if (s->bbr_info) {
1934 __u64 bw;
1935
1936 bw = s->bbr_info->bbr_bw_hi;
1937 bw <<= 32;
1938 bw |= s->bbr_info->bbr_bw_lo;
1939
1940 printf(" bbr:(bw:%sbps,mrtt:%g",
1941 sprint_bw(b1, bw * 8.0),
1942 (double)s->bbr_info->bbr_min_rtt / 1000.0);
1943 if (s->bbr_info->bbr_pacing_gain)
1944 printf(",pacing_gain:%g",
1945 (double)s->bbr_info->bbr_pacing_gain / 256.0);
1946 if (s->bbr_info->bbr_cwnd_gain)
1947 printf(",cwnd_gain:%g",
1948 (double)s->bbr_info->bbr_cwnd_gain / 256.0);
1949 printf(")");
1950 }
1951
1952 if (s->send_bps)
1953 printf(" send %sbps", sprint_bw(b1, s->send_bps));
1954 if (s->lastsnd)
1955 printf(" lastsnd:%u", s->lastsnd);
1956 if (s->lastrcv)
1957 printf(" lastrcv:%u", s->lastrcv);
1958 if (s->lastack)
1959 printf(" lastack:%u", s->lastack);
1960
1961 if (s->pacing_rate) {
1962 printf(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
1963 if (s->pacing_rate_max)
1964 printf("/%sbps", sprint_bw(b1,
1965 s->pacing_rate_max));
1966 }
1967
1968 if (s->delivery_rate)
1969 printf(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
1970 if (s->app_limited)
1971 printf(" app_limited");
1972
1973 if (s->busy_time) {
1974 printf(" busy:%llums", s->busy_time / 1000);
1975 if (s->rwnd_limited)
1976 printf(" rwnd_limited:%llums(%.1f%%)",
1977 s->rwnd_limited / 1000,
1978 100.0 * s->rwnd_limited / s->busy_time);
1979 if (s->sndbuf_limited)
1980 printf(" sndbuf_limited:%llums(%.1f%%)",
1981 s->sndbuf_limited / 1000,
1982 100.0 * s->sndbuf_limited / s->busy_time);
1983 }
1984
1985 if (s->unacked)
1986 printf(" unacked:%u", s->unacked);
1987 if (s->retrans || s->retrans_total)
1988 printf(" retrans:%u/%u", s->retrans, s->retrans_total);
1989 if (s->lost)
1990 printf(" lost:%u", s->lost);
1991 if (s->sacked && s->ss.state != SS_LISTEN)
1992 printf(" sacked:%u", s->sacked);
1993 if (s->fackets)
1994 printf(" fackets:%u", s->fackets);
1995 if (s->reordering != 3)
1996 printf(" reordering:%d", s->reordering);
1997 if (s->rcv_rtt)
1998 printf(" rcv_rtt:%g", s->rcv_rtt);
1999 if (s->rcv_space)
2000 printf(" rcv_space:%d", s->rcv_space);
2001 if (s->not_sent)
2002 printf(" notsent:%u", s->not_sent);
2003 if (s->min_rtt)
2004 printf(" minrtt:%g", s->min_rtt);
2005 }
2006
2007 static void tcp_timer_print(struct tcpstat *s)
2008 {
2009 if (s->timer) {
2010 if (s->timer > 4)
2011 s->timer = 5;
2012 printf(" timer:(%s,%s,%d)",
2013 tmr_name[s->timer],
2014 print_ms_timer(s->timeout),
2015 s->retrans);
2016 }
2017 }
2018
2019 static void sctp_timer_print(struct tcpstat *s)
2020 {
2021 if (s->timer)
2022 printf(" timer:(T3_RTX,%s,%d)",
2023 print_ms_timer(s->timeout), s->retrans);
2024 }
2025
2026 static int tcp_show_line(char *line, const struct filter *f, int family)
2027 {
2028 int rto = 0, ato = 0;
2029 struct tcpstat s = {};
2030 char *loc, *rem, *data;
2031 char opt[256];
2032 int n;
2033 int hz = get_user_hz();
2034
2035 if (proc_inet_split_line(line, &loc, &rem, &data))
2036 return -1;
2037
2038 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2039
2040 if (!(f->states & (1 << state)))
2041 return 0;
2042
2043 proc_parse_inet_addr(loc, rem, family, &s.ss);
2044
2045 if (f->f && run_ssfilter(f->f, &s.ss) == 0)
2046 return 0;
2047
2048 opt[0] = 0;
2049 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
2050 &s.ss.state, &s.ss.wq, &s.ss.rq,
2051 &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
2052 &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
2053 &s.ssthresh, opt);
2054
2055 if (n < 17)
2056 opt[0] = 0;
2057
2058 if (n < 12) {
2059 rto = 0;
2060 s.cwnd = 2;
2061 s.ssthresh = -1;
2062 ato = s.qack = 0;
2063 }
2064
2065 s.retrans = s.timer != 1 ? s.probes : s.retrans;
2066 s.timeout = (s.timeout * 1000 + hz - 1) / hz;
2067 s.ato = (double)ato / hz;
2068 s.qack /= 2;
2069 s.rto = (double)rto;
2070 s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
2071 s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
2072 s.ss.type = IPPROTO_TCP;
2073
2074 inet_stats_print(&s.ss);
2075
2076 if (show_options)
2077 tcp_timer_print(&s);
2078
2079 if (show_details) {
2080 sock_details_print(&s.ss);
2081 if (opt[0])
2082 printf(" opt:\"%s\"", opt);
2083 }
2084
2085 if (show_tcpinfo)
2086 tcp_stats_print(&s);
2087
2088 printf("\n");
2089 return 0;
2090 }
2091
2092 static int generic_record_read(FILE *fp,
2093 int (*worker)(char*, const struct filter *, int),
2094 const struct filter *f, int fam)
2095 {
2096 char line[256];
2097
2098 /* skip header */
2099 if (fgets(line, sizeof(line), fp) == NULL)
2100 goto outerr;
2101
2102 while (fgets(line, sizeof(line), fp) != NULL) {
2103 int n = strlen(line);
2104
2105 if (n == 0 || line[n-1] != '\n') {
2106 errno = -EINVAL;
2107 return -1;
2108 }
2109 line[n-1] = 0;
2110
2111 if (worker(line, f, fam) < 0)
2112 return 0;
2113 }
2114 outerr:
2115
2116 return ferror(fp) ? -1 : 0;
2117 }
2118
2119 static void print_skmeminfo(struct rtattr *tb[], int attrtype)
2120 {
2121 const __u32 *skmeminfo;
2122
2123 if (!tb[attrtype]) {
2124 if (attrtype == INET_DIAG_SKMEMINFO) {
2125 if (!tb[INET_DIAG_MEMINFO])
2126 return;
2127
2128 const struct inet_diag_meminfo *minfo =
2129 RTA_DATA(tb[INET_DIAG_MEMINFO]);
2130
2131 printf(" mem:(r%u,w%u,f%u,t%u)",
2132 minfo->idiag_rmem,
2133 minfo->idiag_wmem,
2134 minfo->idiag_fmem,
2135 minfo->idiag_tmem);
2136 }
2137 return;
2138 }
2139
2140 skmeminfo = RTA_DATA(tb[attrtype]);
2141
2142 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
2143 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
2144 skmeminfo[SK_MEMINFO_RCVBUF],
2145 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
2146 skmeminfo[SK_MEMINFO_SNDBUF],
2147 skmeminfo[SK_MEMINFO_FWD_ALLOC],
2148 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
2149 skmeminfo[SK_MEMINFO_OPTMEM]);
2150
2151 if (RTA_PAYLOAD(tb[attrtype]) >=
2152 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
2153 printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
2154
2155 if (RTA_PAYLOAD(tb[attrtype]) >=
2156 (SK_MEMINFO_DROPS + 1) * sizeof(__u32))
2157 printf(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
2158
2159 printf(")");
2160 }
2161
2162 #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
2163
2164 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2165 struct rtattr *tb[])
2166 {
2167 double rtt = 0;
2168 struct tcpstat s = {};
2169
2170 s.ss.state = r->idiag_state;
2171
2172 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2173
2174 if (tb[INET_DIAG_INFO]) {
2175 struct tcp_info *info;
2176 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2177
2178 /* workaround for older kernels with less fields */
2179 if (len < sizeof(*info)) {
2180 info = alloca(sizeof(*info));
2181 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2182 memset((char *)info + len, 0, sizeof(*info) - len);
2183 } else
2184 info = RTA_DATA(tb[INET_DIAG_INFO]);
2185
2186 if (show_options) {
2187 s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
2188 s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
2189 s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
2190 s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
2191 s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
2192 }
2193
2194 if (tb[INET_DIAG_CONG])
2195 strncpy(s.cong_alg,
2196 rta_getattr_str(tb[INET_DIAG_CONG]),
2197 sizeof(s.cong_alg) - 1);
2198
2199 if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
2200 s.has_wscale_opt = true;
2201 s.snd_wscale = info->tcpi_snd_wscale;
2202 s.rcv_wscale = info->tcpi_rcv_wscale;
2203 }
2204
2205 if (info->tcpi_rto && info->tcpi_rto != 3000000)
2206 s.rto = (double)info->tcpi_rto / 1000;
2207
2208 s.backoff = info->tcpi_backoff;
2209 s.rtt = (double)info->tcpi_rtt / 1000;
2210 s.rttvar = (double)info->tcpi_rttvar / 1000;
2211 s.ato = (double)info->tcpi_ato / 1000;
2212 s.mss = info->tcpi_snd_mss;
2213 s.rcv_space = info->tcpi_rcv_space;
2214 s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
2215 s.lastsnd = info->tcpi_last_data_sent;
2216 s.lastrcv = info->tcpi_last_data_recv;
2217 s.lastack = info->tcpi_last_ack_recv;
2218 s.unacked = info->tcpi_unacked;
2219 s.retrans = info->tcpi_retrans;
2220 s.retrans_total = info->tcpi_total_retrans;
2221 s.lost = info->tcpi_lost;
2222 s.sacked = info->tcpi_sacked;
2223 s.reordering = info->tcpi_reordering;
2224 s.rcv_space = info->tcpi_rcv_space;
2225 s.cwnd = info->tcpi_snd_cwnd;
2226
2227 if (info->tcpi_snd_ssthresh < 0xFFFF)
2228 s.ssthresh = info->tcpi_snd_ssthresh;
2229
2230 rtt = (double) info->tcpi_rtt;
2231 if (tb[INET_DIAG_VEGASINFO]) {
2232 const struct tcpvegas_info *vinfo
2233 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
2234
2235 if (vinfo->tcpv_enabled &&
2236 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
2237 rtt = vinfo->tcpv_rtt;
2238 }
2239
2240 if (tb[INET_DIAG_DCTCPINFO]) {
2241 struct dctcpstat *dctcp = malloc(sizeof(struct
2242 dctcpstat));
2243
2244 const struct tcp_dctcp_info *dinfo
2245 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
2246
2247 dctcp->enabled = !!dinfo->dctcp_enabled;
2248 dctcp->ce_state = dinfo->dctcp_ce_state;
2249 dctcp->alpha = dinfo->dctcp_alpha;
2250 dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
2251 dctcp->ab_tot = dinfo->dctcp_ab_tot;
2252 s.dctcp = dctcp;
2253 }
2254
2255 if (tb[INET_DIAG_BBRINFO]) {
2256 const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
2257 int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
2258 sizeof(*s.bbr_info));
2259
2260 s.bbr_info = calloc(1, sizeof(*s.bbr_info));
2261 if (s.bbr_info && bbr_info)
2262 memcpy(s.bbr_info, bbr_info, len);
2263 }
2264
2265 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
2266 s.send_bps = (double) info->tcpi_snd_cwnd *
2267 (double)info->tcpi_snd_mss * 8000000. / rtt;
2268 }
2269
2270 if (info->tcpi_pacing_rate &&
2271 info->tcpi_pacing_rate != ~0ULL) {
2272 s.pacing_rate = info->tcpi_pacing_rate * 8.;
2273
2274 if (info->tcpi_max_pacing_rate &&
2275 info->tcpi_max_pacing_rate != ~0ULL)
2276 s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
2277 }
2278 s.bytes_acked = info->tcpi_bytes_acked;
2279 s.bytes_received = info->tcpi_bytes_received;
2280 s.segs_out = info->tcpi_segs_out;
2281 s.segs_in = info->tcpi_segs_in;
2282 s.data_segs_out = info->tcpi_data_segs_out;
2283 s.data_segs_in = info->tcpi_data_segs_in;
2284 s.not_sent = info->tcpi_notsent_bytes;
2285 if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
2286 s.min_rtt = (double) info->tcpi_min_rtt / 1000;
2287 s.delivery_rate = info->tcpi_delivery_rate * 8.;
2288 s.app_limited = info->tcpi_delivery_rate_app_limited;
2289 s.busy_time = info->tcpi_busy_time;
2290 s.rwnd_limited = info->tcpi_rwnd_limited;
2291 s.sndbuf_limited = info->tcpi_sndbuf_limited;
2292 tcp_stats_print(&s);
2293 free(s.dctcp);
2294 free(s.bbr_info);
2295 }
2296 }
2297
2298 static const char *format_host_sa(struct sockaddr_storage *sa)
2299 {
2300 union {
2301 struct sockaddr_in sin;
2302 struct sockaddr_in6 sin6;
2303 } *saddr = (void *)sa;
2304
2305 switch (sa->ss_family) {
2306 case AF_INET:
2307 return format_host(AF_INET, 4, &saddr->sin.sin_addr);
2308 case AF_INET6:
2309 return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
2310 default:
2311 return "";
2312 }
2313 }
2314
2315 static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2316 struct rtattr *tb[])
2317 {
2318 struct sockaddr_storage *sa;
2319 int len;
2320
2321 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2322
2323 if (tb[INET_DIAG_LOCALS]) {
2324 len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
2325 sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
2326
2327 printf("locals:%s", format_host_sa(sa));
2328 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2329 printf(",%s", format_host_sa(sa));
2330
2331 }
2332 if (tb[INET_DIAG_PEERS]) {
2333 len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
2334 sa = RTA_DATA(tb[INET_DIAG_PEERS]);
2335
2336 printf(" peers:%s", format_host_sa(sa));
2337 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2338 printf(",%s", format_host_sa(sa));
2339 }
2340 if (tb[INET_DIAG_INFO]) {
2341 struct sctp_info *info;
2342 len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2343
2344 /* workaround for older kernels with less fields */
2345 if (len < sizeof(*info)) {
2346 info = alloca(sizeof(*info));
2347 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2348 memset((char *)info + len, 0, sizeof(*info) - len);
2349 } else
2350 info = RTA_DATA(tb[INET_DIAG_INFO]);
2351
2352 sctp_stats_print(info);
2353 }
2354 }
2355
2356 static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
2357 {
2358 struct rtattr *tb[INET_DIAG_MAX+1];
2359 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2360
2361 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2362 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2363
2364 s->state = r->idiag_state;
2365 s->local.family = s->remote.family = r->idiag_family;
2366 s->lport = ntohs(r->id.idiag_sport);
2367 s->rport = ntohs(r->id.idiag_dport);
2368 s->wq = r->idiag_wqueue;
2369 s->rq = r->idiag_rqueue;
2370 s->ino = r->idiag_inode;
2371 s->uid = r->idiag_uid;
2372 s->iface = r->id.idiag_if;
2373 s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
2374
2375 s->mark = 0;
2376 if (tb[INET_DIAG_MARK])
2377 s->mark = *(__u32 *) RTA_DATA(tb[INET_DIAG_MARK]);
2378 if (tb[INET_DIAG_PROTOCOL])
2379 s->raw_prot = *(__u8 *)RTA_DATA(tb[INET_DIAG_PROTOCOL]);
2380 else
2381 s->raw_prot = 0;
2382
2383 if (s->local.family == AF_INET)
2384 s->local.bytelen = s->remote.bytelen = 4;
2385 else
2386 s->local.bytelen = s->remote.bytelen = 16;
2387
2388 memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
2389 memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
2390 }
2391
2392 static int inet_show_sock(struct nlmsghdr *nlh,
2393 struct sockstat *s)
2394 {
2395 struct rtattr *tb[INET_DIAG_MAX+1];
2396 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2397
2398 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2399 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2400
2401 if (tb[INET_DIAG_PROTOCOL])
2402 s->type = *(__u8 *)RTA_DATA(tb[INET_DIAG_PROTOCOL]);
2403
2404 inet_stats_print(s);
2405
2406 if (show_options) {
2407 struct tcpstat t = {};
2408
2409 t.timer = r->idiag_timer;
2410 t.timeout = r->idiag_expires;
2411 t.retrans = r->idiag_retrans;
2412 if (s->type == IPPROTO_SCTP)
2413 sctp_timer_print(&t);
2414 else
2415 tcp_timer_print(&t);
2416 }
2417
2418 if (show_details) {
2419 sock_details_print(s);
2420 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY]) {
2421 unsigned char v6only;
2422
2423 v6only = *(__u8 *)RTA_DATA(tb[INET_DIAG_SKV6ONLY]);
2424 printf(" v6only:%u", v6only);
2425 }
2426 if (tb[INET_DIAG_SHUTDOWN]) {
2427 unsigned char mask;
2428
2429 mask = *(__u8 *)RTA_DATA(tb[INET_DIAG_SHUTDOWN]);
2430 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2431 }
2432 }
2433
2434 if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
2435 printf("\n\t");
2436 if (s->type == IPPROTO_SCTP)
2437 sctp_show_info(nlh, r, tb);
2438 else
2439 tcp_show_info(nlh, r, tb);
2440 }
2441 sctp_ino = s->ino;
2442
2443 printf("\n");
2444 return 0;
2445 }
2446
2447 static int tcpdiag_send(int fd, int protocol, struct filter *f)
2448 {
2449 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2450 struct {
2451 struct nlmsghdr nlh;
2452 struct inet_diag_req r;
2453 } req = {
2454 .nlh.nlmsg_len = sizeof(req),
2455 .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
2456 .nlh.nlmsg_seq = MAGIC_SEQ,
2457 .r.idiag_family = AF_INET,
2458 .r.idiag_states = f->states,
2459 };
2460 char *bc = NULL;
2461 int bclen;
2462 struct msghdr msg;
2463 struct rtattr rta;
2464 struct iovec iov[3];
2465 int iovlen = 1;
2466
2467 if (protocol == IPPROTO_UDP)
2468 return -1;
2469
2470 if (protocol == IPPROTO_TCP)
2471 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
2472 else
2473 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
2474 if (show_mem) {
2475 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2476 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2477 }
2478
2479 if (show_tcpinfo) {
2480 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2481 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2482 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2483 }
2484
2485 iov[0] = (struct iovec){
2486 .iov_base = &req,
2487 .iov_len = sizeof(req)
2488 };
2489 if (f->f) {
2490 bclen = ssfilter_bytecompile(f->f, &bc);
2491 if (bclen) {
2492 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2493 rta.rta_len = RTA_LENGTH(bclen);
2494 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2495 iov[2] = (struct iovec){ bc, bclen };
2496 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2497 iovlen = 3;
2498 }
2499 }
2500
2501 msg = (struct msghdr) {
2502 .msg_name = (void *)&nladdr,
2503 .msg_namelen = sizeof(nladdr),
2504 .msg_iov = iov,
2505 .msg_iovlen = iovlen,
2506 };
2507
2508 if (sendmsg(fd, &msg, 0) < 0) {
2509 close(fd);
2510 return -1;
2511 }
2512
2513 return 0;
2514 }
2515
2516 static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
2517 {
2518 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2519 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2520 char *bc = NULL;
2521 int bclen;
2522 struct msghdr msg;
2523 struct rtattr rta;
2524 struct iovec iov[3];
2525 int iovlen = 1;
2526
2527 if (family == PF_UNSPEC)
2528 return tcpdiag_send(fd, protocol, f);
2529
2530 memset(&req.r, 0, sizeof(req.r));
2531 req.r.sdiag_family = family;
2532 req.r.sdiag_protocol = protocol;
2533 req.r.idiag_states = f->states;
2534 if (show_mem) {
2535 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2536 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2537 }
2538
2539 if (show_tcpinfo) {
2540 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2541 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2542 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2543 }
2544
2545 iov[0] = (struct iovec){
2546 .iov_base = &req,
2547 .iov_len = sizeof(req)
2548 };
2549 if (f->f) {
2550 bclen = ssfilter_bytecompile(f->f, &bc);
2551 if (bclen) {
2552 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2553 rta.rta_len = RTA_LENGTH(bclen);
2554 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2555 iov[2] = (struct iovec){ bc, bclen };
2556 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2557 iovlen = 3;
2558 }
2559 }
2560
2561 msg = (struct msghdr) {
2562 .msg_name = (void *)&nladdr,
2563 .msg_namelen = sizeof(nladdr),
2564 .msg_iov = iov,
2565 .msg_iovlen = iovlen,
2566 };
2567
2568 if (sendmsg(fd, &msg, 0) < 0) {
2569 close(fd);
2570 return -1;
2571 }
2572
2573 return 0;
2574 }
2575
2576 struct inet_diag_arg {
2577 struct filter *f;
2578 int protocol;
2579 struct rtnl_handle *rth;
2580 };
2581
2582 static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
2583 {
2584 struct inet_diag_msg *d = NLMSG_DATA(h);
2585 struct inet_diag_arg *diag_arg = arg;
2586 struct rtnl_handle *rth = diag_arg->rth;
2587
2588 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2589
2590 req.nlh.nlmsg_type = SOCK_DESTROY;
2591 req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
2592 req.nlh.nlmsg_seq = ++rth->seq;
2593 req.r.sdiag_family = d->idiag_family;
2594 req.r.sdiag_protocol = diag_arg->protocol;
2595 req.r.id = d->id;
2596
2597 if (diag_arg->protocol == IPPROTO_RAW) {
2598 struct inet_diag_req_raw *raw = (void *)&req.r;
2599
2600 BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
2601 raw->sdiag_raw_protocol = s->raw_prot;
2602 }
2603
2604 return rtnl_talk(rth, &req.nlh, NULL, 0);
2605 }
2606
2607 static int show_one_inet_sock(const struct sockaddr_nl *addr,
2608 struct nlmsghdr *h, void *arg)
2609 {
2610 int err;
2611 struct inet_diag_arg *diag_arg = arg;
2612 struct inet_diag_msg *r = NLMSG_DATA(h);
2613 struct sockstat s = {};
2614
2615 if (!(diag_arg->f->families & (1 << r->idiag_family)))
2616 return 0;
2617
2618 parse_diag_msg(h, &s);
2619 s.type = diag_arg->protocol;
2620
2621 if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
2622 return 0;
2623
2624 if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
2625 if (errno == EOPNOTSUPP || errno == ENOENT) {
2626 /* Socket can't be closed, or is already closed. */
2627 return 0;
2628 } else {
2629 perror("SOCK_DESTROY answers");
2630 return -1;
2631 }
2632 }
2633
2634 err = inet_show_sock(h, &s);
2635 if (err < 0)
2636 return err;
2637
2638 return 0;
2639 }
2640
2641 static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
2642 {
2643 int err = 0;
2644 struct rtnl_handle rth, rth2;
2645 int family = PF_INET;
2646 struct inet_diag_arg arg = { .f = f, .protocol = protocol };
2647
2648 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
2649 return -1;
2650
2651 if (f->kill) {
2652 if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
2653 rtnl_close(&rth);
2654 return -1;
2655 }
2656 arg.rth = &rth2;
2657 }
2658
2659 rth.dump = MAGIC_SEQ;
2660 rth.dump_fp = dump_fp;
2661 if (preferred_family == PF_INET6)
2662 family = PF_INET6;
2663
2664 again:
2665 if ((err = sockdiag_send(family, rth.fd, protocol, f)))
2666 goto Exit;
2667
2668 if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
2669 if (family != PF_UNSPEC) {
2670 family = PF_UNSPEC;
2671 goto again;
2672 }
2673 goto Exit;
2674 }
2675 if (family == PF_INET && preferred_family != PF_INET) {
2676 family = PF_INET6;
2677 goto again;
2678 }
2679
2680 Exit:
2681 rtnl_close(&rth);
2682 if (arg.rth)
2683 rtnl_close(arg.rth);
2684 return err;
2685 }
2686
2687 static int tcp_show_netlink_file(struct filter *f)
2688 {
2689 FILE *fp;
2690 char buf[16384];
2691
2692 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
2693 perror("fopen($TCPDIAG_FILE)");
2694 return -1;
2695 }
2696
2697 while (1) {
2698 int status, err;
2699 struct nlmsghdr *h = (struct nlmsghdr *)buf;
2700 struct sockstat s = {};
2701
2702 status = fread(buf, 1, sizeof(*h), fp);
2703 if (status < 0) {
2704 perror("Reading header from $TCPDIAG_FILE");
2705 return -1;
2706 }
2707 if (status != sizeof(*h)) {
2708 perror("Unexpected EOF reading $TCPDIAG_FILE");
2709 return -1;
2710 }
2711
2712 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
2713
2714 if (status < 0) {
2715 perror("Reading $TCPDIAG_FILE");
2716 return -1;
2717 }
2718 if (status + sizeof(*h) < h->nlmsg_len) {
2719 perror("Unexpected EOF reading $TCPDIAG_FILE");
2720 return -1;
2721 }
2722
2723 /* The only legal exit point */
2724 if (h->nlmsg_type == NLMSG_DONE)
2725 return 0;
2726
2727 if (h->nlmsg_type == NLMSG_ERROR) {
2728 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
2729
2730 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2731 fprintf(stderr, "ERROR truncated\n");
2732 } else {
2733 errno = -err->error;
2734 perror("TCPDIAG answered");
2735 }
2736 return -1;
2737 }
2738
2739 parse_diag_msg(h, &s);
2740 s.type = IPPROTO_TCP;
2741
2742 if (f && f->f && run_ssfilter(f->f, &s) == 0)
2743 continue;
2744
2745 err = inet_show_sock(h, &s);
2746 if (err < 0)
2747 return err;
2748 }
2749 }
2750
2751 static int tcp_show(struct filter *f, int socktype)
2752 {
2753 FILE *fp = NULL;
2754 char *buf = NULL;
2755 int bufsize = 64*1024;
2756
2757 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2758 return 0;
2759
2760 dg_proto = TCP_PROTO;
2761
2762 if (getenv("TCPDIAG_FILE"))
2763 return tcp_show_netlink_file(f);
2764
2765 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
2766 && inet_show_netlink(f, NULL, socktype) == 0)
2767 return 0;
2768
2769 /* Sigh... We have to parse /proc/net/tcp... */
2770
2771
2772 /* Estimate amount of sockets and try to allocate
2773 * huge buffer to read all the table at one read.
2774 * Limit it by 16MB though. The assumption is: as soon as
2775 * kernel was able to hold information about N connections,
2776 * it is able to give us some memory for snapshot.
2777 */
2778 if (1) {
2779 get_slabstat(&slabstat);
2780
2781 int guess = slabstat.socks+slabstat.tcp_syns;
2782
2783 if (f->states&(1<<SS_TIME_WAIT))
2784 guess += slabstat.tcp_tws;
2785 if (guess > (16*1024*1024)/128)
2786 guess = (16*1024*1024)/128;
2787 guess *= 128;
2788 if (guess > bufsize)
2789 bufsize = guess;
2790 }
2791 while (bufsize >= 64*1024) {
2792 if ((buf = malloc(bufsize)) != NULL)
2793 break;
2794 bufsize /= 2;
2795 }
2796 if (buf == NULL) {
2797 errno = ENOMEM;
2798 return -1;
2799 }
2800
2801 if (f->families & (1<<AF_INET)) {
2802 if ((fp = net_tcp_open()) == NULL)
2803 goto outerr;
2804
2805 setbuffer(fp, buf, bufsize);
2806 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
2807 goto outerr;
2808 fclose(fp);
2809 }
2810
2811 if ((f->families & (1<<AF_INET6)) &&
2812 (fp = net_tcp6_open()) != NULL) {
2813 setbuffer(fp, buf, bufsize);
2814 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
2815 goto outerr;
2816 fclose(fp);
2817 }
2818
2819 free(buf);
2820 return 0;
2821
2822 outerr:
2823 do {
2824 int saved_errno = errno;
2825
2826 free(buf);
2827 if (fp)
2828 fclose(fp);
2829 errno = saved_errno;
2830 return -1;
2831 } while (0);
2832 }
2833
2834 static int sctp_show(struct filter *f)
2835 {
2836 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2837 return 0;
2838
2839 if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
2840 && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
2841 return 0;
2842
2843 return 0;
2844 }
2845
2846 static int dgram_show_line(char *line, const struct filter *f, int family)
2847 {
2848 struct sockstat s = {};
2849 char *loc, *rem, *data;
2850 char opt[256];
2851 int n;
2852
2853 if (proc_inet_split_line(line, &loc, &rem, &data))
2854 return -1;
2855
2856 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2857
2858 if (!(f->states & (1 << state)))
2859 return 0;
2860
2861 proc_parse_inet_addr(loc, rem, family, &s);
2862
2863 if (f->f && run_ssfilter(f->f, &s) == 0)
2864 return 0;
2865
2866 opt[0] = 0;
2867 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
2868 &s.state, &s.wq, &s.rq,
2869 &s.uid, &s.ino,
2870 &s.refcnt, &s.sk, opt);
2871
2872 if (n < 9)
2873 opt[0] = 0;
2874
2875 s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
2876 inet_stats_print(&s);
2877
2878 if (show_details && opt[0])
2879 printf(" opt:\"%s\"", opt);
2880
2881 printf("\n");
2882 return 0;
2883 }
2884
2885 static int udp_show(struct filter *f)
2886 {
2887 FILE *fp = NULL;
2888
2889 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2890 return 0;
2891
2892 dg_proto = UDP_PROTO;
2893
2894 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
2895 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
2896 return 0;
2897
2898 if (f->families&(1<<AF_INET)) {
2899 if ((fp = net_udp_open()) == NULL)
2900 goto outerr;
2901 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2902 goto outerr;
2903 fclose(fp);
2904 }
2905
2906 if ((f->families&(1<<AF_INET6)) &&
2907 (fp = net_udp6_open()) != NULL) {
2908 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2909 goto outerr;
2910 fclose(fp);
2911 }
2912 return 0;
2913
2914 outerr:
2915 do {
2916 int saved_errno = errno;
2917
2918 if (fp)
2919 fclose(fp);
2920 errno = saved_errno;
2921 return -1;
2922 } while (0);
2923 }
2924
2925 static int raw_show(struct filter *f)
2926 {
2927 FILE *fp = NULL;
2928
2929 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2930 return 0;
2931
2932 dg_proto = RAW_PROTO;
2933
2934 if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
2935 inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
2936 return 0;
2937
2938 if (f->families&(1<<AF_INET)) {
2939 if ((fp = net_raw_open()) == NULL)
2940 goto outerr;
2941 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2942 goto outerr;
2943 fclose(fp);
2944 }
2945
2946 if ((f->families&(1<<AF_INET6)) &&
2947 (fp = net_raw6_open()) != NULL) {
2948 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2949 goto outerr;
2950 fclose(fp);
2951 }
2952 return 0;
2953
2954 outerr:
2955 do {
2956 int saved_errno = errno;
2957
2958 if (fp)
2959 fclose(fp);
2960 errno = saved_errno;
2961 return -1;
2962 } while (0);
2963 }
2964
2965 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
2966 SS_ESTABLISHED, SS_CLOSING };
2967
2968 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
2969
2970 static void unix_list_drop_first(struct sockstat **list)
2971 {
2972 struct sockstat *s = *list;
2973
2974 (*list) = (*list)->next;
2975 free(s->name);
2976 free(s);
2977 }
2978
2979 static bool unix_type_skip(struct sockstat *s, struct filter *f)
2980 {
2981 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
2982 return true;
2983 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
2984 return true;
2985 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
2986 return true;
2987 return false;
2988 }
2989
2990 static void unix_stats_print(struct sockstat *s, struct filter *f)
2991 {
2992 char port_name[30] = {};
2993
2994 sock_state_print(s);
2995
2996 sock_addr_print(s->name ?: "*", " ",
2997 int_to_str(s->lport, port_name), NULL);
2998 sock_addr_print(s->peer_name ?: "*", " ",
2999 int_to_str(s->rport, port_name), NULL);
3000
3001 proc_ctx_print(s);
3002 }
3003
3004 static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
3005 void *arg)
3006 {
3007 struct filter *f = (struct filter *)arg;
3008 struct unix_diag_msg *r = NLMSG_DATA(nlh);
3009 struct rtattr *tb[UNIX_DIAG_MAX+1];
3010 char name[128];
3011 struct sockstat stat = { .name = "*", .peer_name = "*" };
3012
3013 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
3014 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3015
3016 stat.type = r->udiag_type;
3017 stat.state = r->udiag_state;
3018 stat.ino = stat.lport = r->udiag_ino;
3019 stat.local.family = stat.remote.family = AF_UNIX;
3020
3021 if (unix_type_skip(&stat, f))
3022 return 0;
3023
3024 if (tb[UNIX_DIAG_RQLEN]) {
3025 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
3026
3027 stat.rq = rql->udiag_rqueue;
3028 stat.wq = rql->udiag_wqueue;
3029 }
3030 if (tb[UNIX_DIAG_NAME]) {
3031 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
3032
3033 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
3034 name[len] = '\0';
3035 if (name[0] == '\0')
3036 for (int i = 0; i < len; i++)
3037 if (name[i] == '\0')
3038 name[i] = '@';
3039 stat.name = &name[0];
3040 memcpy(stat.local.data, &stat.name, sizeof(stat.name));
3041 }
3042 if (tb[UNIX_DIAG_PEER])
3043 stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
3044
3045 if (f->f && run_ssfilter(f->f, &stat) == 0)
3046 return 0;
3047
3048 unix_stats_print(&stat, f);
3049
3050 if (show_mem)
3051 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
3052 if (show_details) {
3053 if (tb[UNIX_DIAG_SHUTDOWN]) {
3054 unsigned char mask;
3055
3056 mask = *(__u8 *)RTA_DATA(tb[UNIX_DIAG_SHUTDOWN]);
3057 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3058 }
3059 }
3060 printf("\n");
3061
3062 return 0;
3063 }
3064
3065 static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
3066 size_t size, rtnl_filter_t show_one_sock)
3067 {
3068 int ret = -1;
3069 struct rtnl_handle rth;
3070
3071 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3072 return -1;
3073
3074 rth.dump = MAGIC_SEQ;
3075
3076 if (rtnl_send(&rth, req, size) < 0)
3077 goto Exit;
3078
3079 if (rtnl_dump_filter(&rth, show_one_sock, f))
3080 goto Exit;
3081
3082 ret = 0;
3083 Exit:
3084 rtnl_close(&rth);
3085 return ret;
3086 }
3087
3088 static int unix_show_netlink(struct filter *f)
3089 {
3090 DIAG_REQUEST(req, struct unix_diag_req r);
3091
3092 req.r.sdiag_family = AF_UNIX;
3093 req.r.udiag_states = f->states;
3094 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
3095 if (show_mem)
3096 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
3097
3098 return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
3099 }
3100
3101 static int unix_show(struct filter *f)
3102 {
3103 FILE *fp;
3104 char buf[256];
3105 char name[128];
3106 int newformat = 0;
3107 int cnt;
3108 struct sockstat *list = NULL;
3109
3110 if (!filter_af_get(f, AF_UNIX))
3111 return 0;
3112
3113 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
3114 && unix_show_netlink(f) == 0)
3115 return 0;
3116
3117 if ((fp = net_unix_open()) == NULL)
3118 return -1;
3119 if (!fgets(buf, sizeof(buf), fp)) {
3120 fclose(fp);
3121 return -1;
3122 }
3123
3124 if (memcmp(buf, "Peer", 4) == 0)
3125 newformat = 1;
3126 cnt = 0;
3127
3128 while (fgets(buf, sizeof(buf), fp)) {
3129 struct sockstat *u, **insp;
3130 int flags;
3131
3132 if (!(u = calloc(1, sizeof(*u))))
3133 break;
3134 u->name = NULL;
3135 u->peer_name = NULL;
3136
3137 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
3138 &u->rport, &u->rq, &u->wq, &flags, &u->type,
3139 &u->state, &u->ino, name) < 8)
3140 name[0] = 0;
3141
3142 u->lport = u->ino;
3143 u->local.family = u->remote.family = AF_UNIX;
3144
3145 if (flags & (1 << 16)) {
3146 u->state = SS_LISTEN;
3147 } else {
3148 u->state = unix_state_map[u->state-1];
3149 if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
3150 u->state = SS_ESTABLISHED;
3151 }
3152 if (unix_type_skip(u, f) ||
3153 !(f->states & (1 << u->state))) {
3154 free(u);
3155 continue;
3156 }
3157
3158 if (!newformat) {
3159 u->rport = 0;
3160 u->rq = 0;
3161 u->wq = 0;
3162 }
3163
3164 if (name[0]) {
3165 u->name = strdup(name);
3166 if (!u->name)
3167 break;
3168 }
3169
3170 if (u->rport) {
3171 struct sockstat *p;
3172
3173 for (p = list; p; p = p->next) {
3174 if (u->rport == p->lport)
3175 break;
3176 }
3177 if (!p)
3178 u->peer_name = "?";
3179 else
3180 u->peer_name = p->name ? : "*";
3181 }
3182
3183 if (f->f) {
3184 struct sockstat st = {
3185 .local.family = AF_UNIX,
3186 .remote.family = AF_UNIX,
3187 };
3188
3189 memcpy(st.local.data, &u->name, sizeof(u->name));
3190 if (strcmp(u->peer_name, "*"))
3191 memcpy(st.remote.data, &u->peer_name,
3192 sizeof(u->peer_name));
3193 if (run_ssfilter(f->f, &st) == 0) {
3194 free(u->name);
3195 free(u);
3196 continue;
3197 }
3198 }
3199
3200 insp = &list;
3201 while (*insp) {
3202 if (u->type < (*insp)->type ||
3203 (u->type == (*insp)->type &&
3204 u->ino < (*insp)->ino))
3205 break;
3206 insp = &(*insp)->next;
3207 }
3208 u->next = *insp;
3209 *insp = u;
3210
3211 if (++cnt > MAX_UNIX_REMEMBER) {
3212 while (list) {
3213 unix_stats_print(list, f);
3214 printf("\n");
3215
3216 unix_list_drop_first(&list);
3217 }
3218 cnt = 0;
3219 }
3220 }
3221 fclose(fp);
3222 while (list) {
3223 unix_stats_print(list, f);
3224 printf("\n");
3225
3226 unix_list_drop_first(&list);
3227 }
3228
3229 return 0;
3230 }
3231
3232 static int packet_stats_print(struct sockstat *s, const struct filter *f)
3233 {
3234 const char *addr, *port;
3235 char ll_name[16];
3236
3237 s->local.family = s->remote.family = AF_PACKET;
3238
3239 if (f->f) {
3240 s->local.data[0] = s->prot;
3241 if (run_ssfilter(f->f, s) == 0)
3242 return 1;
3243 }
3244
3245 sock_state_print(s);
3246
3247 if (s->prot == 3)
3248 addr = "*";
3249 else
3250 addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
3251
3252 if (s->iface == 0)
3253 port = "*";
3254 else
3255 port = xll_index_to_name(s->iface);
3256
3257 sock_addr_print(addr, ":", port, NULL);
3258 sock_addr_print("", "*", "", NULL);
3259
3260 proc_ctx_print(s);
3261
3262 if (show_details)
3263 sock_details_print(s);
3264
3265 return 0;
3266 }
3267
3268 static void packet_show_ring(struct packet_diag_ring *ring)
3269 {
3270 printf("blk_size:%d", ring->pdr_block_size);
3271 printf(",blk_nr:%d", ring->pdr_block_nr);
3272 printf(",frm_size:%d", ring->pdr_frame_size);
3273 printf(",frm_nr:%d", ring->pdr_frame_nr);
3274 printf(",tmo:%d", ring->pdr_retire_tmo);
3275 printf(",features:0x%x", ring->pdr_features);
3276 }
3277
3278 static int packet_show_sock(const struct sockaddr_nl *addr,
3279 struct nlmsghdr *nlh, void *arg)
3280 {
3281 const struct filter *f = arg;
3282 struct packet_diag_msg *r = NLMSG_DATA(nlh);
3283 struct packet_diag_info *pinfo = NULL;
3284 struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
3285 struct rtattr *tb[PACKET_DIAG_MAX+1];
3286 struct sockstat stat = {};
3287 uint32_t fanout = 0;
3288 bool has_fanout = false;
3289
3290 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
3291 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3292
3293 /* use /proc/net/packet if all info are not available */
3294 if (!tb[PACKET_DIAG_MEMINFO])
3295 return -1;
3296
3297 stat.type = r->pdiag_type;
3298 stat.prot = r->pdiag_num;
3299 stat.ino = r->pdiag_ino;
3300 stat.state = SS_CLOSE;
3301 stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
3302
3303 if (tb[PACKET_DIAG_MEMINFO]) {
3304 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
3305
3306 stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3307 }
3308
3309 if (tb[PACKET_DIAG_INFO]) {
3310 pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
3311 stat.lport = stat.iface = pinfo->pdi_index;
3312 }
3313
3314 if (tb[PACKET_DIAG_UID])
3315 stat.uid = *(__u32 *)RTA_DATA(tb[PACKET_DIAG_UID]);
3316
3317 if (tb[PACKET_DIAG_RX_RING])
3318 ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
3319
3320 if (tb[PACKET_DIAG_TX_RING])
3321 ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
3322
3323 if (tb[PACKET_DIAG_FANOUT]) {
3324 has_fanout = true;
3325 fanout = *(uint32_t *)RTA_DATA(tb[PACKET_DIAG_FANOUT]);
3326 }
3327
3328 if (packet_stats_print(&stat, f))
3329 return 0;
3330
3331 if (show_details) {
3332 if (pinfo) {
3333 printf("\n\tver:%d", pinfo->pdi_version);
3334 printf(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
3335 printf(" flags( ");
3336 if (pinfo->pdi_flags & PDI_RUNNING)
3337 printf("running");
3338 if (pinfo->pdi_flags & PDI_AUXDATA)
3339 printf(" auxdata");
3340 if (pinfo->pdi_flags & PDI_ORIGDEV)
3341 printf(" origdev");
3342 if (pinfo->pdi_flags & PDI_VNETHDR)
3343 printf(" vnethdr");
3344 if (pinfo->pdi_flags & PDI_LOSS)
3345 printf(" loss");
3346 if (!pinfo->pdi_flags)
3347 printf("0");
3348 printf(" )");
3349 }
3350 if (ring_rx) {
3351 printf("\n\tring_rx(");
3352 packet_show_ring(ring_rx);
3353 printf(")");
3354 }
3355 if (ring_tx) {
3356 printf("\n\tring_tx(");
3357 packet_show_ring(ring_tx);
3358 printf(")");
3359 }
3360 if (has_fanout) {
3361 uint16_t type = (fanout >> 16) & 0xffff;
3362
3363 printf("\n\tfanout(");
3364 printf("id:%d,", fanout & 0xffff);
3365 printf("type:");
3366
3367 if (type == 0)
3368 printf("hash");
3369 else if (type == 1)
3370 printf("lb");
3371 else if (type == 2)
3372 printf("cpu");
3373 else if (type == 3)
3374 printf("roll");
3375 else if (type == 4)
3376 printf("random");
3377 else if (type == 5)
3378 printf("qm");
3379 else
3380 printf("0x%x", type);
3381
3382 printf(")");
3383 }
3384 }
3385
3386 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
3387 struct sock_filter *fil =
3388 RTA_DATA(tb[PACKET_DIAG_FILTER]);
3389 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
3390 sizeof(struct sock_filter);
3391
3392 printf("\n\tbpf filter (%d): ", num);
3393 while (num) {
3394 printf(" 0x%02x %u %u %u,",
3395 fil->code, fil->jt, fil->jf, fil->k);
3396 num--;
3397 fil++;
3398 }
3399 }
3400 printf("\n");
3401 return 0;
3402 }
3403
3404 static int packet_show_netlink(struct filter *f)
3405 {
3406 DIAG_REQUEST(req, struct packet_diag_req r);
3407
3408 req.r.sdiag_family = AF_PACKET;
3409 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
3410 PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
3411
3412 return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
3413 }
3414
3415 static int packet_show_line(char *buf, const struct filter *f, int fam)
3416 {
3417 unsigned long long sk;
3418 struct sockstat stat = {};
3419 int type, prot, iface, state, rq, uid, ino;
3420
3421 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
3422 &sk,
3423 &type, &prot, &iface, &state,
3424 &rq, &uid, &ino);
3425
3426 if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
3427 return 0;
3428 if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
3429 return 0;
3430
3431 stat.type = type;
3432 stat.prot = prot;
3433 stat.lport = stat.iface = iface;
3434 stat.state = state;
3435 stat.rq = rq;
3436 stat.uid = uid;
3437 stat.ino = ino;
3438 stat.state = SS_CLOSE;
3439
3440 if (packet_stats_print(&stat, f))
3441 return 0;
3442
3443 printf("\n");
3444 return 0;
3445 }
3446
3447 static int packet_show(struct filter *f)
3448 {
3449 FILE *fp;
3450 int rc = 0;
3451
3452 if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
3453 return 0;
3454
3455 if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
3456 packet_show_netlink(f) == 0)
3457 return 0;
3458
3459 if ((fp = net_packet_open()) == NULL)
3460 return -1;
3461 if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
3462 rc = -1;
3463
3464 fclose(fp);
3465 return rc;
3466 }
3467
3468 static int netlink_show_one(struct filter *f,
3469 int prot, int pid, unsigned int groups,
3470 int state, int dst_pid, unsigned int dst_group,
3471 int rq, int wq,
3472 unsigned long long sk, unsigned long long cb)
3473 {
3474 struct sockstat st;
3475
3476 SPRINT_BUF(prot_buf) = {};
3477 const char *prot_name;
3478 char procname[64] = {};
3479
3480 st.state = SS_CLOSE;
3481 st.rq = rq;
3482 st.wq = wq;
3483 st.local.family = st.remote.family = AF_NETLINK;
3484
3485 if (f->f) {
3486 st.rport = -1;
3487 st.lport = pid;
3488 st.local.data[0] = prot;
3489 if (run_ssfilter(f->f, &st) == 0)
3490 return 1;
3491 }
3492
3493 sock_state_print(&st);
3494
3495 if (resolve_services)
3496 prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
3497 else
3498 prot_name = int_to_str(prot, prot_buf);
3499
3500 if (pid == -1) {
3501 procname[0] = '*';
3502 } else if (resolve_services) {
3503 int done = 0;
3504
3505 if (!pid) {
3506 done = 1;
3507 strncpy(procname, "kernel", 6);
3508 } else if (pid > 0) {
3509 FILE *fp;
3510
3511 snprintf(procname, sizeof(procname), "%s/%d/stat",
3512 getenv("PROC_ROOT") ? : "/proc", pid);
3513 if ((fp = fopen(procname, "r")) != NULL) {
3514 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
3515 snprintf(procname+strlen(procname),
3516 sizeof(procname)-strlen(procname),
3517 "/%d", pid);
3518 done = 1;
3519 }
3520 fclose(fp);
3521 }
3522 }
3523 if (!done)
3524 int_to_str(pid, procname);
3525 } else {
3526 int_to_str(pid, procname);
3527 }
3528
3529 sock_addr_print(prot_name, ":", procname, NULL);
3530
3531 if (state == NETLINK_CONNECTED) {
3532 char dst_group_buf[30];
3533 char dst_pid_buf[30];
3534
3535 sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
3536 int_to_str(dst_pid, dst_pid_buf), NULL);
3537 } else {
3538 sock_addr_print("", "*", "", NULL);
3539 }
3540
3541 char *pid_context = NULL;
3542
3543 if (show_proc_ctx) {
3544 /* The pid value will either be:
3545 * 0 if destination kernel - show kernel initial context.
3546 * A valid process pid - use getpidcon.
3547 * A unique value allocated by the kernel or netlink user
3548 * to the process - show context as "not available".
3549 */
3550 if (!pid)
3551 security_get_initial_context("kernel", &pid_context);
3552 else if (pid > 0)
3553 getpidcon(pid, &pid_context);
3554
3555 if (pid_context != NULL) {
3556 printf("proc_ctx=%-*s ", serv_width, pid_context);
3557 free(pid_context);
3558 } else {
3559 printf("proc_ctx=%-*s ", serv_width, "unavailable");
3560 }
3561 }
3562
3563 if (show_details) {
3564 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
3565 }
3566 printf("\n");
3567
3568 return 0;
3569 }
3570
3571 static int netlink_show_sock(const struct sockaddr_nl *addr,
3572 struct nlmsghdr *nlh, void *arg)
3573 {
3574 struct filter *f = (struct filter *)arg;
3575 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
3576 struct rtattr *tb[NETLINK_DIAG_MAX+1];
3577 int rq = 0, wq = 0;
3578 unsigned long groups = 0;
3579
3580 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
3581 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3582
3583 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
3584 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
3585
3586 if (tb[NETLINK_DIAG_MEMINFO]) {
3587 const __u32 *skmeminfo;
3588
3589 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
3590
3591 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3592 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
3593 }
3594
3595 if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
3596 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
3597 rq, wq, 0, 0)) {
3598 return 0;
3599 }
3600
3601 if (show_mem) {
3602 printf("\t");
3603 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
3604 printf("\n");
3605 }
3606
3607 return 0;
3608 }
3609
3610 static int netlink_show_netlink(struct filter *f)
3611 {
3612 DIAG_REQUEST(req, struct netlink_diag_req r);
3613
3614 req.r.sdiag_family = AF_NETLINK;
3615 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
3616 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
3617
3618 return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
3619 }
3620
3621 static int netlink_show(struct filter *f)
3622 {
3623 FILE *fp;
3624 char buf[256];
3625 int prot, pid;
3626 unsigned int groups;
3627 int rq, wq, rc;
3628 unsigned long long sk, cb;
3629
3630 if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
3631 return 0;
3632
3633 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
3634 netlink_show_netlink(f) == 0)
3635 return 0;
3636
3637 if ((fp = net_netlink_open()) == NULL)
3638 return -1;
3639 if (!fgets(buf, sizeof(buf), fp)) {
3640 fclose(fp);
3641 return -1;
3642 }
3643
3644 while (fgets(buf, sizeof(buf), fp)) {
3645 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
3646 &sk,
3647 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
3648
3649 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
3650 }
3651
3652 fclose(fp);
3653 return 0;
3654 }
3655
3656 struct sock_diag_msg {
3657 __u8 sdiag_family;
3658 };
3659
3660 static int generic_show_sock(const struct sockaddr_nl *addr,
3661 struct nlmsghdr *nlh, void *arg)
3662 {
3663 struct sock_diag_msg *r = NLMSG_DATA(nlh);
3664 struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
3665
3666 switch (r->sdiag_family) {
3667 case AF_INET:
3668 case AF_INET6:
3669 return show_one_inet_sock(addr, nlh, &inet_arg);
3670 case AF_UNIX:
3671 return unix_show_sock(addr, nlh, arg);
3672 case AF_PACKET:
3673 return packet_show_sock(addr, nlh, arg);
3674 case AF_NETLINK:
3675 return netlink_show_sock(addr, nlh, arg);
3676 default:
3677 return -1;
3678 }
3679 }
3680
3681 static int handle_follow_request(struct filter *f)
3682 {
3683 int ret = -1;
3684 int groups = 0;
3685 struct rtnl_handle rth;
3686
3687 if (f->families & (1 << AF_INET) && f->dbs & (1 << TCP_DB))
3688 groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
3689 if (f->families & (1 << AF_INET) && f->dbs & (1 << UDP_DB))
3690 groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
3691 if (f->families & (1 << AF_INET6) && f->dbs & (1 << TCP_DB))
3692 groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
3693 if (f->families & (1 << AF_INET6) && f->dbs & (1 << UDP_DB))
3694 groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
3695
3696 if (groups == 0)
3697 return -1;
3698
3699 if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
3700 return -1;
3701
3702 rth.dump = 0;
3703 rth.local.nl_pid = 0;
3704
3705 if (rtnl_dump_filter(&rth, generic_show_sock, f))
3706 goto Exit;
3707
3708 ret = 0;
3709 Exit:
3710 rtnl_close(&rth);
3711 return ret;
3712 }
3713
3714 struct snmpstat {
3715 int tcp_estab;
3716 };
3717
3718 static int get_snmp_int(char *proto, char *key, int *result)
3719 {
3720 char buf[1024];
3721 FILE *fp;
3722 int protolen = strlen(proto);
3723 int keylen = strlen(key);
3724
3725 *result = 0;
3726
3727 if ((fp = net_snmp_open()) == NULL)
3728 return -1;
3729
3730 while (fgets(buf, sizeof(buf), fp) != NULL) {
3731 char *p = buf;
3732 int pos = 0;
3733
3734 if (memcmp(buf, proto, protolen))
3735 continue;
3736 while ((p = strchr(p, ' ')) != NULL) {
3737 pos++;
3738 p++;
3739 if (memcmp(p, key, keylen) == 0 &&
3740 (p[keylen] == ' ' || p[keylen] == '\n'))
3741 break;
3742 }
3743 if (fgets(buf, sizeof(buf), fp) == NULL)
3744 break;
3745 if (memcmp(buf, proto, protolen))
3746 break;
3747 p = buf;
3748 while ((p = strchr(p, ' ')) != NULL) {
3749 p++;
3750 if (--pos == 0) {
3751 sscanf(p, "%d", result);
3752 fclose(fp);
3753 return 0;
3754 }
3755 }
3756 }
3757
3758 fclose(fp);
3759 errno = ESRCH;
3760 return -1;
3761 }
3762
3763
3764 /* Get stats from sockstat */
3765
3766 struct ssummary {
3767 int socks;
3768 int tcp_mem;
3769 int tcp_total;
3770 int tcp_orphans;
3771 int tcp_tws;
3772 int tcp4_hashed;
3773 int udp4;
3774 int raw4;
3775 int frag4;
3776 int frag4_mem;
3777 int tcp6_hashed;
3778 int udp6;
3779 int raw6;
3780 int frag6;
3781 int frag6_mem;
3782 };
3783
3784 static void get_sockstat_line(char *line, struct ssummary *s)
3785 {
3786 char id[256], rem[256];
3787
3788 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
3789 return;
3790
3791 if (strcmp(id, "sockets:") == 0)
3792 sscanf(rem, "%*s%d", &s->socks);
3793 else if (strcmp(id, "UDP:") == 0)
3794 sscanf(rem, "%*s%d", &s->udp4);
3795 else if (strcmp(id, "UDP6:") == 0)
3796 sscanf(rem, "%*s%d", &s->udp6);
3797 else if (strcmp(id, "RAW:") == 0)
3798 sscanf(rem, "%*s%d", &s->raw4);
3799 else if (strcmp(id, "RAW6:") == 0)
3800 sscanf(rem, "%*s%d", &s->raw6);
3801 else if (strcmp(id, "TCP6:") == 0)
3802 sscanf(rem, "%*s%d", &s->tcp6_hashed);
3803 else if (strcmp(id, "FRAG:") == 0)
3804 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
3805 else if (strcmp(id, "FRAG6:") == 0)
3806 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
3807 else if (strcmp(id, "TCP:") == 0)
3808 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
3809 &s->tcp4_hashed,
3810 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
3811 }
3812
3813 static int get_sockstat(struct ssummary *s)
3814 {
3815 char buf[256];
3816 FILE *fp;
3817
3818 memset(s, 0, sizeof(*s));
3819
3820 if ((fp = net_sockstat_open()) == NULL)
3821 return -1;
3822 while (fgets(buf, sizeof(buf), fp) != NULL)
3823 get_sockstat_line(buf, s);
3824 fclose(fp);
3825
3826 if ((fp = net_sockstat6_open()) == NULL)
3827 return 0;
3828 while (fgets(buf, sizeof(buf), fp) != NULL)
3829 get_sockstat_line(buf, s);
3830 fclose(fp);
3831
3832 return 0;
3833 }
3834
3835 static int print_summary(void)
3836 {
3837 struct ssummary s;
3838 struct snmpstat sn;
3839
3840 if (get_sockstat(&s) < 0)
3841 perror("ss: get_sockstat");
3842 if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
3843 perror("ss: get_snmpstat");
3844
3845 get_slabstat(&slabstat);
3846
3847 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
3848
3849 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
3850 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
3851 sn.tcp_estab,
3852 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
3853 s.tcp_orphans,
3854 slabstat.tcp_syns,
3855 s.tcp_tws, slabstat.tcp_tws,
3856 slabstat.tcp_ports
3857 );
3858
3859 printf("\n");
3860 printf("Transport Total IP IPv6\n");
3861 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
3862 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
3863 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
3864 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
3865 printf("INET %-9d %-9d %-9d\n",
3866 s.raw4+s.udp4+s.tcp4_hashed+
3867 s.raw6+s.udp6+s.tcp6_hashed,
3868 s.raw4+s.udp4+s.tcp4_hashed,
3869 s.raw6+s.udp6+s.tcp6_hashed);
3870 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
3871
3872 printf("\n");
3873
3874 return 0;
3875 }
3876
3877 static void _usage(FILE *dest)
3878 {
3879 fprintf(dest,
3880 "Usage: ss [ OPTIONS ]\n"
3881 " ss [ OPTIONS ] [ FILTER ]\n"
3882 " -h, --help this message\n"
3883 " -V, --version output version information\n"
3884 " -n, --numeric don't resolve service names\n"
3885 " -r, --resolve resolve host names\n"
3886 " -a, --all display all sockets\n"
3887 " -l, --listening display listening sockets\n"
3888 " -o, --options show timer information\n"
3889 " -e, --extended show detailed socket information\n"
3890 " -m, --memory show socket memory usage\n"
3891 " -p, --processes show process using socket\n"
3892 " -i, --info show internal TCP information\n"
3893 " -s, --summary show socket usage summary\n"
3894 " -b, --bpf show bpf filter socket information\n"
3895 " -E, --events continually display sockets as they are destroyed\n"
3896 " -Z, --context display process SELinux security contexts\n"
3897 " -z, --contexts display process and socket SELinux security contexts\n"
3898 " -N, --net switch to the specified network namespace name\n"
3899 "\n"
3900 " -4, --ipv4 display only IP version 4 sockets\n"
3901 " -6, --ipv6 display only IP version 6 sockets\n"
3902 " -0, --packet display PACKET sockets\n"
3903 " -t, --tcp display only TCP sockets\n"
3904 " -S, --sctp display only SCTP sockets\n"
3905 " -u, --udp display only UDP sockets\n"
3906 " -d, --dccp display only DCCP sockets\n"
3907 " -w, --raw display only RAW sockets\n"
3908 " -x, --unix display only Unix domain sockets\n"
3909 " -f, --family=FAMILY display sockets of type FAMILY\n"
3910 " FAMILY := {inet|inet6|link|unix|netlink|help}\n"
3911 "\n"
3912 " -K, --kill forcibly close sockets, display what was closed\n"
3913 " -H, --no-header Suppress header line\n"
3914 "\n"
3915 " -A, --query=QUERY, --socket=QUERY\n"
3916 " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
3917 "\n"
3918 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
3919 " -F, --filter=FILE read filter information from FILE\n"
3920 " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
3921 " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
3922 " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listen|closing}\n"
3923 " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3924 " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3925 " bucket := {syn-recv|time-wait}\n"
3926 " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listen|closing}\n"
3927 );
3928 }
3929
3930 static void help(void) __attribute__((noreturn));
3931 static void help(void)
3932 {
3933 _usage(stdout);
3934 exit(0);
3935 }
3936
3937 static void usage(void) __attribute__((noreturn));
3938 static void usage(void)
3939 {
3940 _usage(stderr);
3941 exit(-1);
3942 }
3943
3944
3945 static int scan_state(const char *state)
3946 {
3947 int i;
3948
3949 if (strcasecmp(state, "close") == 0 ||
3950 strcasecmp(state, "closed") == 0)
3951 return (1<<SS_CLOSE);
3952 if (strcasecmp(state, "syn-rcv") == 0)
3953 return (1<<SS_SYN_RECV);
3954 if (strcasecmp(state, "established") == 0)
3955 return (1<<SS_ESTABLISHED);
3956 if (strcasecmp(state, "all") == 0)
3957 return SS_ALL;
3958 if (strcasecmp(state, "connected") == 0)
3959 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
3960 if (strcasecmp(state, "synchronized") == 0)
3961 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
3962 if (strcasecmp(state, "bucket") == 0)
3963 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
3964 if (strcasecmp(state, "big") == 0)
3965 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
3966 for (i = 0; i < SS_MAX; i++) {
3967 if (strcasecmp(state, sstate_namel[i]) == 0)
3968 return (1<<i);
3969 }
3970
3971 fprintf(stderr, "ss: wrong state name: %s\n", state);
3972 exit(-1);
3973 }
3974
3975 static const struct option long_opts[] = {
3976 { "numeric", 0, 0, 'n' },
3977 { "resolve", 0, 0, 'r' },
3978 { "options", 0, 0, 'o' },
3979 { "extended", 0, 0, 'e' },
3980 { "memory", 0, 0, 'm' },
3981 { "info", 0, 0, 'i' },
3982 { "processes", 0, 0, 'p' },
3983 { "bpf", 0, 0, 'b' },
3984 { "events", 0, 0, 'E' },
3985 { "dccp", 0, 0, 'd' },
3986 { "tcp", 0, 0, 't' },
3987 { "sctp", 0, 0, 'S' },
3988 { "udp", 0, 0, 'u' },
3989 { "raw", 0, 0, 'w' },
3990 { "unix", 0, 0, 'x' },
3991 { "all", 0, 0, 'a' },
3992 { "listening", 0, 0, 'l' },
3993 { "ipv4", 0, 0, '4' },
3994 { "ipv6", 0, 0, '6' },
3995 { "packet", 0, 0, '0' },
3996 { "family", 1, 0, 'f' },
3997 { "socket", 1, 0, 'A' },
3998 { "query", 1, 0, 'A' },
3999 { "summary", 0, 0, 's' },
4000 { "diag", 1, 0, 'D' },
4001 { "filter", 1, 0, 'F' },
4002 { "version", 0, 0, 'V' },
4003 { "help", 0, 0, 'h' },
4004 { "context", 0, 0, 'Z' },
4005 { "contexts", 0, 0, 'z' },
4006 { "net", 1, 0, 'N' },
4007 { "kill", 0, 0, 'K' },
4008 { "no-header", 0, 0, 'H' },
4009 { 0 }
4010
4011 };
4012
4013 int main(int argc, char *argv[])
4014 {
4015 int saw_states = 0;
4016 int saw_query = 0;
4017 int do_summary = 0;
4018 const char *dump_tcpdiag = NULL;
4019 FILE *filter_fp = NULL;
4020 int ch;
4021 int state_filter = 0;
4022
4023 while ((ch = getopt_long(argc, argv,
4024 "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
4025 long_opts, NULL)) != EOF) {
4026 switch (ch) {
4027 case 'n':
4028 resolve_services = 0;
4029 break;
4030 case 'r':
4031 resolve_hosts = 1;
4032 break;
4033 case 'o':
4034 show_options = 1;
4035 break;
4036 case 'e':
4037 show_options = 1;
4038 show_details++;
4039 break;
4040 case 'm':
4041 show_mem = 1;
4042 break;
4043 case 'i':
4044 show_tcpinfo = 1;
4045 break;
4046 case 'p':
4047 show_users++;
4048 user_ent_hash_build();
4049 break;
4050 case 'b':
4051 show_options = 1;
4052 show_bpf++;
4053 break;
4054 case 'E':
4055 follow_events = 1;
4056 break;
4057 case 'd':
4058 filter_db_set(&current_filter, DCCP_DB);
4059 break;
4060 case 't':
4061 filter_db_set(&current_filter, TCP_DB);
4062 break;
4063 case 'S':
4064 filter_db_set(&current_filter, SCTP_DB);
4065 break;
4066 case 'u':
4067 filter_db_set(&current_filter, UDP_DB);
4068 break;
4069 case 'w':
4070 filter_db_set(&current_filter, RAW_DB);
4071 break;
4072 case 'x':
4073 filter_af_set(&current_filter, AF_UNIX);
4074 break;
4075 case 'a':
4076 state_filter = SS_ALL;
4077 break;
4078 case 'l':
4079 state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
4080 break;
4081 case '4':
4082 filter_af_set(&current_filter, AF_INET);
4083 break;
4084 case '6':
4085 filter_af_set(&current_filter, AF_INET6);
4086 break;
4087 case '0':
4088 filter_af_set(&current_filter, AF_PACKET);
4089 break;
4090 case 'f':
4091 if (strcmp(optarg, "inet") == 0)
4092 filter_af_set(&current_filter, AF_INET);
4093 else if (strcmp(optarg, "inet6") == 0)
4094 filter_af_set(&current_filter, AF_INET6);
4095 else if (strcmp(optarg, "link") == 0)
4096 filter_af_set(&current_filter, AF_PACKET);
4097 else if (strcmp(optarg, "unix") == 0)
4098 filter_af_set(&current_filter, AF_UNIX);
4099 else if (strcmp(optarg, "netlink") == 0)
4100 filter_af_set(&current_filter, AF_NETLINK);
4101 else if (strcmp(optarg, "help") == 0)
4102 help();
4103 else {
4104 fprintf(stderr, "ss: \"%s\" is invalid family\n",
4105 optarg);
4106 usage();
4107 }
4108 break;
4109 case 'A':
4110 {
4111 char *p, *p1;
4112
4113 if (!saw_query) {
4114 current_filter.dbs = 0;
4115 state_filter = state_filter ?
4116 state_filter : SS_CONN;
4117 saw_query = 1;
4118 do_default = 0;
4119 }
4120 p = p1 = optarg;
4121 do {
4122 if ((p1 = strchr(p, ',')) != NULL)
4123 *p1 = 0;
4124 if (strcmp(p, "all") == 0) {
4125 filter_default_dbs(&current_filter);
4126 } else if (strcmp(p, "inet") == 0) {
4127 filter_db_set(&current_filter, UDP_DB);
4128 filter_db_set(&current_filter, DCCP_DB);
4129 filter_db_set(&current_filter, TCP_DB);
4130 filter_db_set(&current_filter, SCTP_DB);
4131 filter_db_set(&current_filter, RAW_DB);
4132 } else if (strcmp(p, "udp") == 0) {
4133 filter_db_set(&current_filter, UDP_DB);
4134 } else if (strcmp(p, "dccp") == 0) {
4135 filter_db_set(&current_filter, DCCP_DB);
4136 } else if (strcmp(p, "tcp") == 0) {
4137 filter_db_set(&current_filter, TCP_DB);
4138 } else if (strcmp(p, "sctp") == 0) {
4139 filter_db_set(&current_filter, SCTP_DB);
4140 } else if (strcmp(p, "raw") == 0) {
4141 filter_db_set(&current_filter, RAW_DB);
4142 } else if (strcmp(p, "unix") == 0) {
4143 filter_db_set(&current_filter, UNIX_ST_DB);
4144 filter_db_set(&current_filter, UNIX_DG_DB);
4145 filter_db_set(&current_filter, UNIX_SQ_DB);
4146 } else if (strcasecmp(p, "unix_stream") == 0 ||
4147 strcmp(p, "u_str") == 0) {
4148 filter_db_set(&current_filter, UNIX_ST_DB);
4149 } else if (strcasecmp(p, "unix_dgram") == 0 ||
4150 strcmp(p, "u_dgr") == 0) {
4151 filter_db_set(&current_filter, UNIX_DG_DB);
4152 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
4153 strcmp(p, "u_seq") == 0) {
4154 filter_db_set(&current_filter, UNIX_SQ_DB);
4155 } else if (strcmp(p, "packet") == 0) {
4156 filter_db_set(&current_filter, PACKET_R_DB);
4157 filter_db_set(&current_filter, PACKET_DG_DB);
4158 } else if (strcmp(p, "packet_raw") == 0 ||
4159 strcmp(p, "p_raw") == 0) {
4160 filter_db_set(&current_filter, PACKET_R_DB);
4161 } else if (strcmp(p, "packet_dgram") == 0 ||
4162 strcmp(p, "p_dgr") == 0) {
4163 filter_db_set(&current_filter, PACKET_DG_DB);
4164 } else if (strcmp(p, "netlink") == 0) {
4165 filter_db_set(&current_filter, NETLINK_DB);
4166 } else {
4167 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
4168 usage();
4169 }
4170 p = p1 + 1;
4171 } while (p1);
4172 break;
4173 }
4174 case 's':
4175 do_summary = 1;
4176 break;
4177 case 'D':
4178 dump_tcpdiag = optarg;
4179 break;
4180 case 'F':
4181 if (filter_fp) {
4182 fprintf(stderr, "More than one filter file\n");
4183 exit(-1);
4184 }
4185 if (optarg[0] == '-')
4186 filter_fp = stdin;
4187 else
4188 filter_fp = fopen(optarg, "r");
4189 if (!filter_fp) {
4190 perror("fopen filter file");
4191 exit(-1);
4192 }
4193 break;
4194 case 'v':
4195 case 'V':
4196 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
4197 exit(0);
4198 case 'z':
4199 show_sock_ctx++;
4200 /* fall through */
4201 case 'Z':
4202 if (is_selinux_enabled() <= 0) {
4203 fprintf(stderr, "ss: SELinux is not enabled.\n");
4204 exit(1);
4205 }
4206 show_proc_ctx++;
4207 user_ent_hash_build();
4208 break;
4209 case 'N':
4210 if (netns_switch(optarg))
4211 exit(1);
4212 break;
4213 case 'K':
4214 current_filter.kill = 1;
4215 break;
4216 case 'H':
4217 show_header = 0;
4218 break;
4219 case 'h':
4220 help();
4221 case '?':
4222 default:
4223 usage();
4224 }
4225 }
4226
4227 argc -= optind;
4228 argv += optind;
4229
4230 if (do_summary) {
4231 print_summary();
4232 if (do_default && argc == 0)
4233 exit(0);
4234 }
4235
4236 while (argc > 0) {
4237 if (strcmp(*argv, "state") == 0) {
4238 NEXT_ARG();
4239 if (!saw_states)
4240 state_filter = 0;
4241 state_filter |= scan_state(*argv);
4242 saw_states = 1;
4243 } else if (strcmp(*argv, "exclude") == 0 ||
4244 strcmp(*argv, "excl") == 0) {
4245 NEXT_ARG();
4246 if (!saw_states)
4247 state_filter = SS_ALL;
4248 state_filter &= ~scan_state(*argv);
4249 saw_states = 1;
4250 } else {
4251 break;
4252 }
4253 argc--; argv++;
4254 }
4255
4256 if (do_default) {
4257 state_filter = state_filter ? state_filter : SS_CONN;
4258 filter_default_dbs(&current_filter);
4259 }
4260
4261 filter_states_set(&current_filter, state_filter);
4262 filter_merge_defaults(&current_filter);
4263
4264 if (resolve_services && resolve_hosts &&
4265 (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
4266 init_service_resolver();
4267
4268 if (current_filter.dbs == 0) {
4269 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
4270 exit(0);
4271 }
4272 if (current_filter.families == 0) {
4273 fprintf(stderr, "ss: no families to show with such filter.\n");
4274 exit(0);
4275 }
4276 if (current_filter.states == 0) {
4277 fprintf(stderr, "ss: no socket states to show with such filter.\n");
4278 exit(0);
4279 }
4280
4281 if (dump_tcpdiag) {
4282 FILE *dump_fp = stdout;
4283
4284 if (!(current_filter.dbs & (1<<TCP_DB))) {
4285 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
4286 exit(0);
4287 }
4288 if (dump_tcpdiag[0] != '-') {
4289 dump_fp = fopen(dump_tcpdiag, "w");
4290 if (!dump_tcpdiag) {
4291 perror("fopen dump file");
4292 exit(-1);
4293 }
4294 }
4295 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
4296 fflush(dump_fp);
4297 exit(0);
4298 }
4299
4300 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
4301 usage();
4302
4303 netid_width = 0;
4304 if (current_filter.dbs&(current_filter.dbs-1))
4305 netid_width = 5;
4306
4307 state_width = 0;
4308 if (current_filter.states&(current_filter.states-1))
4309 state_width = 10;
4310
4311 screen_width = 80;
4312 if (isatty(STDOUT_FILENO)) {
4313 struct winsize w;
4314
4315 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
4316 if (w.ws_col > 0)
4317 screen_width = w.ws_col;
4318 }
4319 }
4320
4321 addrp_width = screen_width;
4322 addrp_width -= netid_width+1;
4323 addrp_width -= state_width+1;
4324 addrp_width -= 14;
4325
4326 if (addrp_width&1) {
4327 if (netid_width)
4328 netid_width++;
4329 else if (state_width)
4330 state_width++;
4331 }
4332
4333 addrp_width /= 2;
4334 addrp_width--;
4335
4336 serv_width = resolve_services ? 7 : 5;
4337
4338 if (addrp_width < 15+serv_width+1)
4339 addrp_width = 15+serv_width+1;
4340
4341 addr_width = addrp_width - serv_width - 1;
4342
4343 if (show_header) {
4344 if (netid_width)
4345 printf("%-*s ", netid_width, "Netid");
4346 if (state_width)
4347 printf("%-*s ", state_width, "State");
4348 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
4349 }
4350
4351 /* Make enough space for the local/remote port field */
4352 addr_width -= 13;
4353 serv_width += 13;
4354
4355 if (show_header) {
4356 printf("%*s:%-*s %*s:%-*s\n",
4357 addr_width, "Local Address", serv_width, "Port",
4358 addr_width, "Peer Address", serv_width, "Port");
4359 }
4360
4361 fflush(stdout);
4362
4363 if (follow_events)
4364 exit(handle_follow_request(&current_filter));
4365
4366 if (current_filter.dbs & (1<<NETLINK_DB))
4367 netlink_show(&current_filter);
4368 if (current_filter.dbs & PACKET_DBM)
4369 packet_show(&current_filter);
4370 if (current_filter.dbs & UNIX_DBM)
4371 unix_show(&current_filter);
4372 if (current_filter.dbs & (1<<RAW_DB))
4373 raw_show(&current_filter);
4374 if (current_filter.dbs & (1<<UDP_DB))
4375 udp_show(&current_filter);
4376 if (current_filter.dbs & (1<<TCP_DB))
4377 tcp_show(&current_filter, IPPROTO_TCP);
4378 if (current_filter.dbs & (1<<DCCP_DB))
4379 tcp_show(&current_filter, IPPROTO_DCCP);
4380 if (current_filter.dbs & (1<<SCTP_DB))
4381 sctp_show(&current_filter);
4382
4383 if (show_users || show_proc_ctx || show_sock_ctx)
4384 user_ent_destroy();
4385
4386 return 0;
4387 }
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