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Merge branch 'master' into net-next
[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 #include <linux/vm_sockets_diag.h>
48
49 #define MAGIC_SEQ 123456
50
51 #define DIAG_REQUEST(_req, _r) \
52 struct { \
53 struct nlmsghdr nlh; \
54 _r; \
55 } _req = { \
56 .nlh = { \
57 .nlmsg_type = SOCK_DIAG_BY_FAMILY, \
58 .nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
59 .nlmsg_seq = MAGIC_SEQ, \
60 .nlmsg_len = sizeof(_req), \
61 }, \
62 }
63
64 #if HAVE_SELINUX
65 #include <selinux/selinux.h>
66 #else
67 /* Stubs for SELinux functions */
68 static int is_selinux_enabled(void)
69 {
70 return -1;
71 }
72
73 static int getpidcon(pid_t pid, char **context)
74 {
75 *context = NULL;
76 return -1;
77 }
78
79 static int getfilecon(char *path, char **context)
80 {
81 *context = NULL;
82 return -1;
83 }
84
85 static int security_get_initial_context(char *name, char **context)
86 {
87 *context = NULL;
88 return -1;
89 }
90 #endif
91
92 int resolve_hosts;
93 int resolve_services = 1;
94 int preferred_family = AF_UNSPEC;
95 int show_options;
96 int show_details;
97 int show_users;
98 int show_mem;
99 int show_tcpinfo;
100 int show_bpf;
101 int show_proc_ctx;
102 int show_sock_ctx;
103 int show_header = 1;
104 int follow_events;
105 int sctp_ino;
106
107 int netid_width;
108 int state_width;
109 int addr_width;
110 int serv_width;
111
112 static const char *TCP_PROTO = "tcp";
113 static const char *SCTP_PROTO = "sctp";
114 static const char *UDP_PROTO = "udp";
115 static const char *RAW_PROTO = "raw";
116 static const char *dg_proto;
117
118 enum {
119 TCP_DB,
120 DCCP_DB,
121 UDP_DB,
122 RAW_DB,
123 UNIX_DG_DB,
124 UNIX_ST_DB,
125 UNIX_SQ_DB,
126 PACKET_DG_DB,
127 PACKET_R_DB,
128 NETLINK_DB,
129 SCTP_DB,
130 VSOCK_ST_DB,
131 VSOCK_DG_DB,
132 MAX_DB
133 };
134
135 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
136 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
137 #define ALL_DB ((1<<MAX_DB)-1)
138 #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
139 #define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
140 #define VSOCK_DBM ((1<<VSOCK_ST_DB)|(1<<VSOCK_DG_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 uint64_t families;
178 struct ssfilter *f;
179 bool kill;
180 };
181
182 #define FAMILY_MASK(family) ((uint64_t)1 << (family))
183
184 static const struct filter default_dbs[MAX_DB] = {
185 [TCP_DB] = {
186 .states = SS_CONN,
187 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
188 },
189 [DCCP_DB] = {
190 .states = SS_CONN,
191 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
192 },
193 [UDP_DB] = {
194 .states = (1 << SS_ESTABLISHED),
195 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
196 },
197 [RAW_DB] = {
198 .states = (1 << SS_ESTABLISHED),
199 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
200 },
201 [UNIX_DG_DB] = {
202 .states = (1 << SS_CLOSE),
203 .families = FAMILY_MASK(AF_UNIX),
204 },
205 [UNIX_ST_DB] = {
206 .states = SS_CONN,
207 .families = FAMILY_MASK(AF_UNIX),
208 },
209 [UNIX_SQ_DB] = {
210 .states = SS_CONN,
211 .families = FAMILY_MASK(AF_UNIX),
212 },
213 [PACKET_DG_DB] = {
214 .states = (1 << SS_CLOSE),
215 .families = FAMILY_MASK(AF_PACKET),
216 },
217 [PACKET_R_DB] = {
218 .states = (1 << SS_CLOSE),
219 .families = FAMILY_MASK(AF_PACKET),
220 },
221 [NETLINK_DB] = {
222 .states = (1 << SS_CLOSE),
223 .families = FAMILY_MASK(AF_NETLINK),
224 },
225 [SCTP_DB] = {
226 .states = SS_CONN,
227 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
228 },
229 [VSOCK_ST_DB] = {
230 .states = SS_CONN,
231 .families = FAMILY_MASK(AF_VSOCK),
232 },
233 [VSOCK_DG_DB] = {
234 .states = SS_CONN,
235 .families = FAMILY_MASK(AF_VSOCK),
236 },
237 };
238
239 static const struct filter default_afs[AF_MAX] = {
240 [AF_INET] = {
241 .dbs = INET_DBM,
242 .states = SS_CONN,
243 },
244 [AF_INET6] = {
245 .dbs = INET_DBM,
246 .states = SS_CONN,
247 },
248 [AF_UNIX] = {
249 .dbs = UNIX_DBM,
250 .states = SS_CONN,
251 },
252 [AF_PACKET] = {
253 .dbs = PACKET_DBM,
254 .states = (1 << SS_CLOSE),
255 },
256 [AF_NETLINK] = {
257 .dbs = (1 << NETLINK_DB),
258 .states = (1 << SS_CLOSE),
259 },
260 [AF_VSOCK] = {
261 .dbs = VSOCK_DBM,
262 .states = SS_CONN,
263 },
264 };
265
266 static int do_default = 1;
267 static struct filter current_filter;
268
269 static void filter_db_set(struct filter *f, int db)
270 {
271 f->states |= default_dbs[db].states;
272 f->dbs |= 1 << db;
273 do_default = 0;
274 }
275
276 static void filter_af_set(struct filter *f, int af)
277 {
278 f->states |= default_afs[af].states;
279 f->families |= FAMILY_MASK(af);
280 do_default = 0;
281 preferred_family = af;
282 }
283
284 static int filter_af_get(struct filter *f, int af)
285 {
286 return !!(f->families & FAMILY_MASK(af));
287 }
288
289 static void filter_default_dbs(struct filter *f)
290 {
291 filter_db_set(f, UDP_DB);
292 filter_db_set(f, DCCP_DB);
293 filter_db_set(f, TCP_DB);
294 filter_db_set(f, RAW_DB);
295 filter_db_set(f, UNIX_ST_DB);
296 filter_db_set(f, UNIX_DG_DB);
297 filter_db_set(f, UNIX_SQ_DB);
298 filter_db_set(f, PACKET_R_DB);
299 filter_db_set(f, PACKET_DG_DB);
300 filter_db_set(f, NETLINK_DB);
301 filter_db_set(f, SCTP_DB);
302 filter_db_set(f, VSOCK_ST_DB);
303 filter_db_set(f, VSOCK_DG_DB);
304 }
305
306 static void filter_states_set(struct filter *f, int states)
307 {
308 if (states)
309 f->states = states;
310 }
311
312 static void filter_merge_defaults(struct filter *f)
313 {
314 int db;
315 int af;
316
317 for (db = 0; db < MAX_DB; db++) {
318 if (!(f->dbs & (1 << db)))
319 continue;
320
321 if (!(default_dbs[db].families & f->families))
322 f->families |= default_dbs[db].families;
323 }
324 for (af = 0; af < AF_MAX; af++) {
325 if (!(f->families & FAMILY_MASK(af)))
326 continue;
327
328 if (!(default_afs[af].dbs & f->dbs))
329 f->dbs |= default_afs[af].dbs;
330 }
331 }
332
333 static FILE *generic_proc_open(const char *env, const char *name)
334 {
335 const char *p = getenv(env);
336 char store[128];
337
338 if (!p) {
339 p = getenv("PROC_ROOT") ? : "/proc";
340 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
341 p = store;
342 }
343
344 return fopen(p, "r");
345 }
346 #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
347 #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
348 #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
349 #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
350 #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
351 #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
352 #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
353 #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
354 "net/packet")
355 #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
356 "net/netlink")
357 #define slabinfo_open() generic_proc_open("PROC_SLABINFO", "slabinfo")
358 #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
359 "net/sockstat")
360 #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
361 "net/sockstat6")
362 #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
363 #define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
364 "sys/net/ipv4/ip_local_port_range")
365
366 struct user_ent {
367 struct user_ent *next;
368 unsigned int ino;
369 int pid;
370 int fd;
371 char *process;
372 char *process_ctx;
373 char *socket_ctx;
374 };
375
376 #define USER_ENT_HASH_SIZE 256
377 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
378
379 static int user_ent_hashfn(unsigned int ino)
380 {
381 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
382
383 return val & (USER_ENT_HASH_SIZE - 1);
384 }
385
386 static void user_ent_add(unsigned int ino, char *process,
387 int pid, int fd,
388 char *proc_ctx,
389 char *sock_ctx)
390 {
391 struct user_ent *p, **pp;
392
393 p = malloc(sizeof(struct user_ent));
394 if (!p) {
395 fprintf(stderr, "ss: failed to malloc buffer\n");
396 abort();
397 }
398 p->next = NULL;
399 p->ino = ino;
400 p->pid = pid;
401 p->fd = fd;
402 p->process = strdup(process);
403 p->process_ctx = strdup(proc_ctx);
404 p->socket_ctx = strdup(sock_ctx);
405
406 pp = &user_ent_hash[user_ent_hashfn(ino)];
407 p->next = *pp;
408 *pp = p;
409 }
410
411 static void user_ent_destroy(void)
412 {
413 struct user_ent *p, *p_next;
414 int cnt = 0;
415
416 while (cnt != USER_ENT_HASH_SIZE) {
417 p = user_ent_hash[cnt];
418 while (p) {
419 free(p->process);
420 free(p->process_ctx);
421 free(p->socket_ctx);
422 p_next = p->next;
423 free(p);
424 p = p_next;
425 }
426 cnt++;
427 }
428 }
429
430 static void user_ent_hash_build(void)
431 {
432 const char *root = getenv("PROC_ROOT") ? : "/proc/";
433 struct dirent *d;
434 char name[1024];
435 int nameoff;
436 DIR *dir;
437 char *pid_context;
438 char *sock_context;
439 const char *no_ctx = "unavailable";
440 static int user_ent_hash_build_init;
441
442 /* If show_users & show_proc_ctx set only do this once */
443 if (user_ent_hash_build_init != 0)
444 return;
445
446 user_ent_hash_build_init = 1;
447
448 strlcpy(name, root, sizeof(name));
449
450 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
451 strcat(name, "/");
452
453 nameoff = strlen(name);
454
455 dir = opendir(name);
456 if (!dir)
457 return;
458
459 while ((d = readdir(dir)) != NULL) {
460 struct dirent *d1;
461 char process[16];
462 char *p;
463 int pid, pos;
464 DIR *dir1;
465 char crap;
466
467 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
468 continue;
469
470 if (getpidcon(pid, &pid_context) != 0)
471 pid_context = strdup(no_ctx);
472
473 snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
474 pos = strlen(name);
475 if ((dir1 = opendir(name)) == NULL) {
476 free(pid_context);
477 continue;
478 }
479
480 process[0] = '\0';
481 p = process;
482
483 while ((d1 = readdir(dir1)) != NULL) {
484 const char *pattern = "socket:[";
485 unsigned int ino;
486 char lnk[64];
487 int fd;
488 ssize_t link_len;
489 char tmp[1024];
490
491 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
492 continue;
493
494 snprintf(name+pos, sizeof(name) - pos, "%d", fd);
495
496 link_len = readlink(name, lnk, sizeof(lnk)-1);
497 if (link_len == -1)
498 continue;
499 lnk[link_len] = '\0';
500
501 if (strncmp(lnk, pattern, strlen(pattern)))
502 continue;
503
504 sscanf(lnk, "socket:[%u]", &ino);
505
506 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
507 root, pid, d1->d_name);
508
509 if (getfilecon(tmp, &sock_context) <= 0)
510 sock_context = strdup(no_ctx);
511
512 if (*p == '\0') {
513 FILE *fp;
514
515 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
516 root, pid);
517 if ((fp = fopen(tmp, "r")) != NULL) {
518 if (fscanf(fp, "%*d (%[^)])", p) < 1)
519 ; /* ignore */
520 fclose(fp);
521 }
522 }
523 user_ent_add(ino, p, pid, fd,
524 pid_context, sock_context);
525 free(sock_context);
526 }
527 free(pid_context);
528 closedir(dir1);
529 }
530 closedir(dir);
531 }
532
533 enum entry_types {
534 USERS,
535 PROC_CTX,
536 PROC_SOCK_CTX
537 };
538
539 #define ENTRY_BUF_SIZE 512
540 static int find_entry(unsigned int ino, char **buf, int type)
541 {
542 struct user_ent *p;
543 int cnt = 0;
544 char *ptr;
545 char *new_buf;
546 int len, new_buf_len;
547 int buf_used = 0;
548 int buf_len = 0;
549
550 if (!ino)
551 return 0;
552
553 p = user_ent_hash[user_ent_hashfn(ino)];
554 ptr = *buf = NULL;
555 while (p) {
556 if (p->ino != ino)
557 goto next;
558
559 while (1) {
560 ptr = *buf + buf_used;
561 switch (type) {
562 case USERS:
563 len = snprintf(ptr, buf_len - buf_used,
564 "(\"%s\",pid=%d,fd=%d),",
565 p->process, p->pid, p->fd);
566 break;
567 case PROC_CTX:
568 len = snprintf(ptr, buf_len - buf_used,
569 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
570 p->process, p->pid,
571 p->process_ctx, p->fd);
572 break;
573 case PROC_SOCK_CTX:
574 len = snprintf(ptr, buf_len - buf_used,
575 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
576 p->process, p->pid,
577 p->process_ctx, p->fd,
578 p->socket_ctx);
579 break;
580 default:
581 fprintf(stderr, "ss: invalid type: %d\n", type);
582 abort();
583 }
584
585 if (len < 0 || len >= buf_len - buf_used) {
586 new_buf_len = buf_len + ENTRY_BUF_SIZE;
587 new_buf = realloc(*buf, new_buf_len);
588 if (!new_buf) {
589 fprintf(stderr, "ss: failed to malloc buffer\n");
590 abort();
591 }
592 *buf = new_buf;
593 buf_len = new_buf_len;
594 continue;
595 } else {
596 buf_used += len;
597 break;
598 }
599 }
600 cnt++;
601 next:
602 p = p->next;
603 }
604 if (buf_used) {
605 ptr = *buf + buf_used;
606 ptr[-1] = '\0';
607 }
608 return cnt;
609 }
610
611 /* Get stats from slab */
612
613 struct slabstat {
614 int socks;
615 int tcp_ports;
616 int tcp_tws;
617 int tcp_syns;
618 int skbs;
619 };
620
621 static struct slabstat slabstat;
622
623 static int get_slabstat(struct slabstat *s)
624 {
625 char buf[256];
626 FILE *fp;
627 int cnt;
628 static int slabstat_valid;
629 static const char * const slabstat_ids[] = {
630 "sock",
631 "tcp_bind_bucket",
632 "tcp_tw_bucket",
633 "tcp_open_request",
634 "skbuff_head_cache",
635 };
636
637 if (slabstat_valid)
638 return 0;
639
640 memset(s, 0, sizeof(*s));
641
642 fp = slabinfo_open();
643 if (!fp)
644 return -1;
645
646 cnt = sizeof(*s)/sizeof(int);
647
648 if (!fgets(buf, sizeof(buf), fp)) {
649 fclose(fp);
650 return -1;
651 }
652 while (fgets(buf, sizeof(buf), fp) != NULL) {
653 int i;
654
655 for (i = 0; i < ARRAY_SIZE(slabstat_ids); i++) {
656 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
657 sscanf(buf, "%*s%d", ((int *)s) + i);
658 cnt--;
659 break;
660 }
661 }
662 if (cnt <= 0)
663 break;
664 }
665
666 slabstat_valid = 1;
667
668 fclose(fp);
669 return 0;
670 }
671
672 static unsigned long long cookie_sk_get(const uint32_t *cookie)
673 {
674 return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
675 }
676
677 static const char *sctp_sstate_name[] = {
678 [SCTP_STATE_CLOSED] = "CLOSED",
679 [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
680 [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
681 [SCTP_STATE_ESTABLISHED] = "ESTAB",
682 [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
683 [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
684 [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
685 [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
686 };
687
688 struct sockstat {
689 struct sockstat *next;
690 unsigned int type;
691 uint16_t prot;
692 uint16_t raw_prot;
693 inet_prefix local;
694 inet_prefix remote;
695 int lport;
696 int rport;
697 int state;
698 int rq, wq;
699 unsigned int ino;
700 unsigned int uid;
701 int refcnt;
702 unsigned int iface;
703 unsigned long long sk;
704 char *name;
705 char *peer_name;
706 __u32 mark;
707 };
708
709 struct dctcpstat {
710 unsigned int ce_state;
711 unsigned int alpha;
712 unsigned int ab_ecn;
713 unsigned int ab_tot;
714 bool enabled;
715 };
716
717 struct tcpstat {
718 struct sockstat ss;
719 unsigned int timer;
720 unsigned int timeout;
721 int probes;
722 char cong_alg[16];
723 double rto, ato, rtt, rttvar;
724 int qack, ssthresh, backoff;
725 double send_bps;
726 int snd_wscale;
727 int rcv_wscale;
728 int mss;
729 int rcv_mss;
730 int advmss;
731 unsigned int cwnd;
732 unsigned int lastsnd;
733 unsigned int lastrcv;
734 unsigned int lastack;
735 double pacing_rate;
736 double pacing_rate_max;
737 double delivery_rate;
738 unsigned long long bytes_acked;
739 unsigned long long bytes_received;
740 unsigned int segs_out;
741 unsigned int segs_in;
742 unsigned int data_segs_out;
743 unsigned int data_segs_in;
744 unsigned int unacked;
745 unsigned int retrans;
746 unsigned int retrans_total;
747 unsigned int lost;
748 unsigned int sacked;
749 unsigned int fackets;
750 unsigned int reordering;
751 unsigned int not_sent;
752 double rcv_rtt;
753 double min_rtt;
754 int rcv_space;
755 unsigned long long busy_time;
756 unsigned long long rwnd_limited;
757 unsigned long long sndbuf_limited;
758 bool has_ts_opt;
759 bool has_sack_opt;
760 bool has_ecn_opt;
761 bool has_ecnseen_opt;
762 bool has_fastopen_opt;
763 bool has_wscale_opt;
764 bool app_limited;
765 struct dctcpstat *dctcp;
766 struct tcp_bbr_info *bbr_info;
767 };
768
769 /* SCTP assocs share the same inode number with their parent endpoint. So if we
770 * have seen the inode number before, it must be an assoc instead of the next
771 * endpoint. */
772 static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
773 {
774 if (strcmp(sock_name, "sctp"))
775 return false;
776 if (!sctp_ino || sctp_ino != s->ino)
777 return false;
778 return true;
779 }
780
781 static const char *unix_netid_name(int type)
782 {
783 switch (type) {
784 case SOCK_STREAM:
785 return "u_str";
786 case SOCK_SEQPACKET:
787 return "u_seq";
788 case SOCK_DGRAM:
789 default:
790 return "u_dgr";
791 }
792 }
793
794 static const char *proto_name(int protocol)
795 {
796 switch (protocol) {
797 case 0:
798 return "raw";
799 case IPPROTO_UDP:
800 return "udp";
801 case IPPROTO_TCP:
802 return "tcp";
803 case IPPROTO_SCTP:
804 return "sctp";
805 case IPPROTO_DCCP:
806 return "dccp";
807 }
808
809 return "???";
810 }
811
812 static const char *vsock_netid_name(int type)
813 {
814 switch (type) {
815 case SOCK_STREAM:
816 return "v_str";
817 case SOCK_DGRAM:
818 return "v_dgr";
819 default:
820 return "???";
821 }
822 }
823
824 static void sock_state_print(struct sockstat *s)
825 {
826 const char *sock_name;
827 static const char * const sstate_name[] = {
828 "UNKNOWN",
829 [SS_ESTABLISHED] = "ESTAB",
830 [SS_SYN_SENT] = "SYN-SENT",
831 [SS_SYN_RECV] = "SYN-RECV",
832 [SS_FIN_WAIT1] = "FIN-WAIT-1",
833 [SS_FIN_WAIT2] = "FIN-WAIT-2",
834 [SS_TIME_WAIT] = "TIME-WAIT",
835 [SS_CLOSE] = "UNCONN",
836 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
837 [SS_LAST_ACK] = "LAST-ACK",
838 [SS_LISTEN] = "LISTEN",
839 [SS_CLOSING] = "CLOSING",
840 };
841
842 switch (s->local.family) {
843 case AF_UNIX:
844 sock_name = unix_netid_name(s->type);
845 break;
846 case AF_INET:
847 case AF_INET6:
848 sock_name = proto_name(s->type);
849 break;
850 case AF_PACKET:
851 sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
852 break;
853 case AF_NETLINK:
854 sock_name = "nl";
855 break;
856 case AF_VSOCK:
857 sock_name = vsock_netid_name(s->type);
858 break;
859 default:
860 sock_name = "unknown";
861 }
862
863 if (netid_width)
864 printf("%-*s ", netid_width,
865 is_sctp_assoc(s, sock_name) ? "" : sock_name);
866 if (state_width) {
867 if (is_sctp_assoc(s, sock_name))
868 printf("`- %-*s ", state_width - 3,
869 sctp_sstate_name[s->state]);
870 else
871 printf("%-*s ", state_width, sstate_name[s->state]);
872 }
873
874 printf("%-6d %-6d ", s->rq, s->wq);
875 }
876
877 static void sock_details_print(struct sockstat *s)
878 {
879 if (s->uid)
880 printf(" uid:%u", s->uid);
881
882 printf(" ino:%u", s->ino);
883 printf(" sk:%llx", s->sk);
884
885 if (s->mark)
886 printf(" fwmark:0x%x", s->mark);
887 }
888
889 static void sock_addr_print_width(int addr_len, const char *addr, char *delim,
890 int port_len, const char *port, const char *ifname)
891 {
892 if (ifname) {
893 printf("%*s%%%s%s%-*s ", addr_len, addr, ifname, delim,
894 port_len, port);
895 } else {
896 printf("%*s%s%-*s ", addr_len, addr, delim, port_len, port);
897 }
898 }
899
900 static void sock_addr_print(const char *addr, char *delim, const char *port,
901 const char *ifname)
902 {
903 sock_addr_print_width(addr_width, addr, delim, serv_width, port, ifname);
904 }
905
906 static const char *print_ms_timer(unsigned int timeout)
907 {
908 static char buf[64];
909 int secs, msecs, minutes;
910
911 secs = timeout/1000;
912 minutes = secs/60;
913 secs = secs%60;
914 msecs = timeout%1000;
915 buf[0] = 0;
916 if (minutes) {
917 msecs = 0;
918 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
919 if (minutes > 9)
920 secs = 0;
921 }
922 if (secs) {
923 if (secs > 9)
924 msecs = 0;
925 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
926 }
927 if (msecs)
928 sprintf(buf+strlen(buf), "%03dms", msecs);
929 return buf;
930 }
931
932 struct scache {
933 struct scache *next;
934 int port;
935 char *name;
936 const char *proto;
937 };
938
939 struct scache *rlist;
940
941 static void init_service_resolver(void)
942 {
943 char buf[128];
944 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
945
946 if (!fp)
947 return;
948
949 if (!fgets(buf, sizeof(buf), fp)) {
950 pclose(fp);
951 return;
952 }
953 while (fgets(buf, sizeof(buf), fp) != NULL) {
954 unsigned int progn, port;
955 char proto[128], prog[128] = "rpc.";
956 struct scache *c;
957
958 if (sscanf(buf, "%u %*d %s %u %s",
959 &progn, proto, &port, prog+4) != 4)
960 continue;
961
962 if (!(c = malloc(sizeof(*c))))
963 continue;
964
965 c->port = port;
966 c->name = strdup(prog);
967 if (strcmp(proto, TCP_PROTO) == 0)
968 c->proto = TCP_PROTO;
969 else if (strcmp(proto, UDP_PROTO) == 0)
970 c->proto = UDP_PROTO;
971 else if (strcmp(proto, SCTP_PROTO) == 0)
972 c->proto = SCTP_PROTO;
973 else
974 c->proto = NULL;
975 c->next = rlist;
976 rlist = c;
977 }
978 pclose(fp);
979 }
980
981 /* Even do not try default linux ephemeral port ranges:
982 * default /etc/services contains so much of useless crap
983 * wouldbe "allocated" to this area that resolution
984 * is really harmful. I shrug each time when seeing
985 * "socks" or "cfinger" in dumps.
986 */
987 static int is_ephemeral(int port)
988 {
989 static int min = 0, max;
990
991 if (!min) {
992 FILE *f = ephemeral_ports_open();
993
994 if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
995 min = 1024;
996 max = 4999;
997 }
998 if (f)
999 fclose(f);
1000 }
1001 return port >= min && port <= max;
1002 }
1003
1004
1005 static const char *__resolve_service(int port)
1006 {
1007 struct scache *c;
1008
1009 for (c = rlist; c; c = c->next) {
1010 if (c->port == port && c->proto == dg_proto)
1011 return c->name;
1012 }
1013
1014 if (!is_ephemeral(port)) {
1015 static int notfirst;
1016 struct servent *se;
1017
1018 if (!notfirst) {
1019 setservent(1);
1020 notfirst = 1;
1021 }
1022 se = getservbyport(htons(port), dg_proto);
1023 if (se)
1024 return se->s_name;
1025 }
1026
1027 return NULL;
1028 }
1029
1030 #define SCACHE_BUCKETS 1024
1031 static struct scache *cache_htab[SCACHE_BUCKETS];
1032
1033 static const char *resolve_service(int port)
1034 {
1035 static char buf[128];
1036 struct scache *c;
1037 const char *res;
1038 int hash;
1039
1040 if (port == 0) {
1041 buf[0] = '*';
1042 buf[1] = 0;
1043 return buf;
1044 }
1045
1046 if (!resolve_services)
1047 goto do_numeric;
1048
1049 if (dg_proto == RAW_PROTO)
1050 return inet_proto_n2a(port, buf, sizeof(buf));
1051
1052
1053 hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
1054
1055 for (c = cache_htab[hash]; c; c = c->next) {
1056 if (c->port == port && c->proto == dg_proto)
1057 goto do_cache;
1058 }
1059
1060 c = malloc(sizeof(*c));
1061 if (!c)
1062 goto do_numeric;
1063 res = __resolve_service(port);
1064 c->port = port;
1065 c->name = res ? strdup(res) : NULL;
1066 c->proto = dg_proto;
1067 c->next = cache_htab[hash];
1068 cache_htab[hash] = c;
1069
1070 do_cache:
1071 if (c->name)
1072 return c->name;
1073
1074 do_numeric:
1075 sprintf(buf, "%u", port);
1076 return buf;
1077 }
1078
1079 static void inet_addr_print(const inet_prefix *a, int port, unsigned int ifindex)
1080 {
1081 char buf[1024];
1082 const char *ap = buf;
1083 int est_len = addr_width;
1084 const char *ifname = NULL;
1085
1086 if (a->family == AF_INET) {
1087 if (a->data[0] == 0) {
1088 buf[0] = '*';
1089 buf[1] = 0;
1090 } else {
1091 ap = format_host(AF_INET, 4, a->data);
1092 }
1093 } else {
1094 if (!memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) {
1095 buf[0] = '*';
1096 buf[1] = 0;
1097 } else {
1098 ap = format_host(a->family, 16, a->data);
1099
1100 /* Numeric IPv6 addresses should be bracketed */
1101 if (strchr(ap, ':')) {
1102 snprintf(buf, sizeof(buf),
1103 "[%s]", ap);
1104 ap = buf;
1105 }
1106
1107 est_len = strlen(ap);
1108 if (est_len <= addr_width)
1109 est_len = addr_width;
1110 else
1111 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
1112 }
1113 }
1114
1115 if (ifindex) {
1116 ifname = ll_index_to_name(ifindex);
1117 est_len -= strlen(ifname) + 1; /* +1 for percent char */
1118 if (est_len < 0)
1119 est_len = 0;
1120 }
1121
1122 sock_addr_print_width(est_len, ap, ":", serv_width, resolve_service(port),
1123 ifname);
1124 }
1125
1126 struct aafilter {
1127 inet_prefix addr;
1128 int port;
1129 unsigned int iface;
1130 __u32 mark;
1131 __u32 mask;
1132 struct aafilter *next;
1133 };
1134
1135 static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
1136 int plen)
1137 {
1138 if (!inet_addr_match(a, p, plen))
1139 return 0;
1140
1141 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
1142 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
1143 * sockets. Fair? */
1144 if (p->family == AF_INET && a->family == AF_INET6) {
1145 if (a->data[0] == 0 && a->data[1] == 0 &&
1146 a->data[2] == htonl(0xffff)) {
1147 inet_prefix tmp = *a;
1148
1149 tmp.data[0] = a->data[3];
1150 return inet_addr_match(&tmp, p, plen);
1151 }
1152 }
1153 return 1;
1154 }
1155
1156 static int unix_match(const inet_prefix *a, const inet_prefix *p)
1157 {
1158 char *addr, *pattern;
1159
1160 memcpy(&addr, a->data, sizeof(addr));
1161 memcpy(&pattern, p->data, sizeof(pattern));
1162 if (pattern == NULL)
1163 return 1;
1164 if (addr == NULL)
1165 addr = "";
1166 return !fnmatch(pattern, addr, 0);
1167 }
1168
1169 static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
1170 {
1171 switch (f->type) {
1172 case SSF_S_AUTO:
1173 {
1174 if (s->local.family == AF_UNIX) {
1175 char *p;
1176
1177 memcpy(&p, s->local.data, sizeof(p));
1178 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
1179 strspn(p+1, "0123456789abcdef") == 5);
1180 }
1181 if (s->local.family == AF_PACKET)
1182 return s->lport == 0 && s->local.data[0] == 0;
1183 if (s->local.family == AF_NETLINK)
1184 return s->lport < 0;
1185 if (s->local.family == AF_VSOCK)
1186 return s->lport > 1023;
1187
1188 return is_ephemeral(s->lport);
1189 }
1190 case SSF_DCOND:
1191 {
1192 struct aafilter *a = (void *)f->pred;
1193
1194 if (a->addr.family == AF_UNIX)
1195 return unix_match(&s->remote, &a->addr);
1196 if (a->port != -1 && a->port != s->rport)
1197 return 0;
1198 if (a->addr.bitlen) {
1199 do {
1200 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
1201 return 1;
1202 } while ((a = a->next) != NULL);
1203 return 0;
1204 }
1205 return 1;
1206 }
1207 case SSF_SCOND:
1208 {
1209 struct aafilter *a = (void *)f->pred;
1210
1211 if (a->addr.family == AF_UNIX)
1212 return unix_match(&s->local, &a->addr);
1213 if (a->port != -1 && a->port != s->lport)
1214 return 0;
1215 if (a->addr.bitlen) {
1216 do {
1217 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
1218 return 1;
1219 } while ((a = a->next) != NULL);
1220 return 0;
1221 }
1222 return 1;
1223 }
1224 case SSF_D_GE:
1225 {
1226 struct aafilter *a = (void *)f->pred;
1227
1228 return s->rport >= a->port;
1229 }
1230 case SSF_D_LE:
1231 {
1232 struct aafilter *a = (void *)f->pred;
1233
1234 return s->rport <= a->port;
1235 }
1236 case SSF_S_GE:
1237 {
1238 struct aafilter *a = (void *)f->pred;
1239
1240 return s->lport >= a->port;
1241 }
1242 case SSF_S_LE:
1243 {
1244 struct aafilter *a = (void *)f->pred;
1245
1246 return s->lport <= a->port;
1247 }
1248 case SSF_DEVCOND:
1249 {
1250 struct aafilter *a = (void *)f->pred;
1251
1252 return s->iface == a->iface;
1253 }
1254 case SSF_MARKMASK:
1255 {
1256 struct aafilter *a = (void *)f->pred;
1257
1258 return (s->mark & a->mask) == a->mark;
1259 }
1260 /* Yup. It is recursion. Sorry. */
1261 case SSF_AND:
1262 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
1263 case SSF_OR:
1264 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
1265 case SSF_NOT:
1266 return !run_ssfilter(f->pred, s);
1267 default:
1268 abort();
1269 }
1270 }
1271
1272 /* Relocate external jumps by reloc. */
1273 static void ssfilter_patch(char *a, int len, int reloc)
1274 {
1275 while (len > 0) {
1276 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
1277
1278 if (op->no == len+4)
1279 op->no += reloc;
1280 len -= op->yes;
1281 a += op->yes;
1282 }
1283 if (len < 0)
1284 abort();
1285 }
1286
1287 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
1288 {
1289 switch (f->type) {
1290 case SSF_S_AUTO:
1291 {
1292 if (!(*bytecode = malloc(4))) abort();
1293 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
1294 return 4;
1295 }
1296 case SSF_DCOND:
1297 case SSF_SCOND:
1298 {
1299 struct aafilter *a = (void *)f->pred;
1300 struct aafilter *b;
1301 char *ptr;
1302 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
1303 int len = 0;
1304
1305 for (b = a; b; b = b->next) {
1306 len += 4 + sizeof(struct inet_diag_hostcond);
1307 if (a->addr.family == AF_INET6)
1308 len += 16;
1309 else
1310 len += 4;
1311 if (b->next)
1312 len += 4;
1313 }
1314 if (!(ptr = malloc(len))) abort();
1315 *bytecode = ptr;
1316 for (b = a; b; b = b->next) {
1317 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
1318 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
1319 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
1320 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
1321
1322 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
1323 cond->family = a->addr.family;
1324 cond->port = a->port;
1325 cond->prefix_len = a->addr.bitlen;
1326 memcpy(cond->addr, a->addr.data, alen);
1327 ptr += oplen;
1328 if (b->next) {
1329 op = (struct inet_diag_bc_op *)ptr;
1330 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
1331 ptr += 4;
1332 }
1333 }
1334 return ptr - *bytecode;
1335 }
1336 case SSF_D_GE:
1337 {
1338 struct aafilter *x = (void *)f->pred;
1339
1340 if (!(*bytecode = malloc(8))) abort();
1341 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1342 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1343 return 8;
1344 }
1345 case SSF_D_LE:
1346 {
1347 struct aafilter *x = (void *)f->pred;
1348
1349 if (!(*bytecode = malloc(8))) abort();
1350 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1351 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1352 return 8;
1353 }
1354 case SSF_S_GE:
1355 {
1356 struct aafilter *x = (void *)f->pred;
1357
1358 if (!(*bytecode = malloc(8))) abort();
1359 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1360 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1361 return 8;
1362 }
1363 case SSF_S_LE:
1364 {
1365 struct aafilter *x = (void *)f->pred;
1366
1367 if (!(*bytecode = malloc(8))) abort();
1368 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1369 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1370 return 8;
1371 }
1372
1373 case SSF_AND:
1374 {
1375 char *a1 = NULL, *a2 = NULL, *a;
1376 int l1, l2;
1377
1378 l1 = ssfilter_bytecompile(f->pred, &a1);
1379 l2 = ssfilter_bytecompile(f->post, &a2);
1380 if (!l1 || !l2) {
1381 free(a1);
1382 free(a2);
1383 return 0;
1384 }
1385 if (!(a = malloc(l1+l2))) abort();
1386 memcpy(a, a1, l1);
1387 memcpy(a+l1, a2, l2);
1388 free(a1); free(a2);
1389 ssfilter_patch(a, l1, l2);
1390 *bytecode = a;
1391 return l1+l2;
1392 }
1393 case SSF_OR:
1394 {
1395 char *a1 = NULL, *a2 = NULL, *a;
1396 int l1, l2;
1397
1398 l1 = ssfilter_bytecompile(f->pred, &a1);
1399 l2 = ssfilter_bytecompile(f->post, &a2);
1400 if (!l1 || !l2) {
1401 free(a1);
1402 free(a2);
1403 return 0;
1404 }
1405 if (!(a = malloc(l1+l2+4))) abort();
1406 memcpy(a, a1, l1);
1407 memcpy(a+l1+4, a2, l2);
1408 free(a1); free(a2);
1409 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
1410 *bytecode = a;
1411 return l1+l2+4;
1412 }
1413 case SSF_NOT:
1414 {
1415 char *a1 = NULL, *a;
1416 int l1;
1417
1418 l1 = ssfilter_bytecompile(f->pred, &a1);
1419 if (!l1) {
1420 free(a1);
1421 return 0;
1422 }
1423 if (!(a = malloc(l1+4))) abort();
1424 memcpy(a, a1, l1);
1425 free(a1);
1426 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
1427 *bytecode = a;
1428 return l1+4;
1429 }
1430 case SSF_DEVCOND:
1431 {
1432 /* bytecompile for SSF_DEVCOND not supported yet */
1433 return 0;
1434 }
1435 case SSF_MARKMASK:
1436 {
1437 struct aafilter *a = (void *)f->pred;
1438 struct instr {
1439 struct inet_diag_bc_op op;
1440 struct inet_diag_markcond cond;
1441 };
1442 int inslen = sizeof(struct instr);
1443
1444 if (!(*bytecode = malloc(inslen))) abort();
1445 ((struct instr *)*bytecode)[0] = (struct instr) {
1446 { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
1447 { a->mark, a->mask},
1448 };
1449
1450 return inslen;
1451 }
1452 default:
1453 abort();
1454 }
1455 }
1456
1457 static int remember_he(struct aafilter *a, struct hostent *he)
1458 {
1459 char **ptr = he->h_addr_list;
1460 int cnt = 0;
1461 int len;
1462
1463 if (he->h_addrtype == AF_INET)
1464 len = 4;
1465 else if (he->h_addrtype == AF_INET6)
1466 len = 16;
1467 else
1468 return 0;
1469
1470 while (*ptr) {
1471 struct aafilter *b = a;
1472
1473 if (a->addr.bitlen) {
1474 if ((b = malloc(sizeof(*b))) == NULL)
1475 return cnt;
1476 *b = *a;
1477 a->next = b;
1478 }
1479 memcpy(b->addr.data, *ptr, len);
1480 b->addr.bytelen = len;
1481 b->addr.bitlen = len*8;
1482 b->addr.family = he->h_addrtype;
1483 ptr++;
1484 cnt++;
1485 }
1486 return cnt;
1487 }
1488
1489 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
1490 {
1491 static int notfirst;
1492 int cnt = 0;
1493 struct hostent *he;
1494
1495 a->addr.bitlen = 0;
1496 if (!notfirst) {
1497 sethostent(1);
1498 notfirst = 1;
1499 }
1500 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1501 if (he)
1502 cnt = remember_he(a, he);
1503 if (fam == AF_UNSPEC) {
1504 he = gethostbyname2(addr, AF_INET6);
1505 if (he)
1506 cnt += remember_he(a, he);
1507 }
1508 return !cnt;
1509 }
1510
1511 static int xll_initted;
1512
1513 static void xll_init(void)
1514 {
1515 struct rtnl_handle rth;
1516
1517 if (rtnl_open(&rth, 0) < 0)
1518 exit(1);
1519
1520 ll_init_map(&rth);
1521 rtnl_close(&rth);
1522 xll_initted = 1;
1523 }
1524
1525 static const char *xll_index_to_name(int index)
1526 {
1527 if (!xll_initted)
1528 xll_init();
1529 return ll_index_to_name(index);
1530 }
1531
1532 static int xll_name_to_index(const char *dev)
1533 {
1534 if (!xll_initted)
1535 xll_init();
1536 return ll_name_to_index(dev);
1537 }
1538
1539 void *parse_devcond(char *name)
1540 {
1541 struct aafilter a = { .iface = 0 };
1542 struct aafilter *res;
1543
1544 a.iface = xll_name_to_index(name);
1545 if (a.iface == 0) {
1546 char *end;
1547 unsigned long n;
1548
1549 n = strtoul(name, &end, 0);
1550 if (!end || end == name || *end || n > UINT_MAX)
1551 return NULL;
1552
1553 a.iface = n;
1554 }
1555
1556 res = malloc(sizeof(*res));
1557 *res = a;
1558
1559 return res;
1560 }
1561
1562 static void vsock_set_inet_prefix(inet_prefix *a, __u32 cid)
1563 {
1564 *a = (inet_prefix){
1565 .bytelen = sizeof(cid),
1566 .family = AF_VSOCK,
1567 };
1568 memcpy(a->data, &cid, sizeof(cid));
1569 }
1570
1571 void *parse_hostcond(char *addr, bool is_port)
1572 {
1573 char *port = NULL;
1574 struct aafilter a = { .port = -1 };
1575 struct aafilter *res;
1576 int fam = preferred_family;
1577 struct filter *f = &current_filter;
1578
1579 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1580 char *p;
1581
1582 a.addr.family = AF_UNIX;
1583 if (strncmp(addr, "unix:", 5) == 0)
1584 addr += 5;
1585 p = strdup(addr);
1586 a.addr.bitlen = 8*strlen(p);
1587 memcpy(a.addr.data, &p, sizeof(p));
1588 fam = AF_UNIX;
1589 goto out;
1590 }
1591
1592 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1593 a.addr.family = AF_PACKET;
1594 a.addr.bitlen = 0;
1595 if (strncmp(addr, "link:", 5) == 0)
1596 addr += 5;
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 ((a.port = xll_name_to_index(port+1)) <= 0)
1603 return NULL;
1604 }
1605 }
1606 }
1607 if (addr[0] && strcmp(addr, "*")) {
1608 unsigned short tmp;
1609
1610 a.addr.bitlen = 32;
1611 if (ll_proto_a2n(&tmp, addr))
1612 return NULL;
1613 a.addr.data[0] = ntohs(tmp);
1614 }
1615 fam = AF_PACKET;
1616 goto out;
1617 }
1618
1619 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1620 a.addr.family = AF_NETLINK;
1621 a.addr.bitlen = 0;
1622 if (strncmp(addr, "netlink:", 8) == 0)
1623 addr += 8;
1624 port = strchr(addr, ':');
1625 if (port) {
1626 *port = 0;
1627 if (port[1] && strcmp(port+1, "*")) {
1628 if (get_integer(&a.port, port+1, 0)) {
1629 if (strcmp(port+1, "kernel") == 0)
1630 a.port = 0;
1631 else
1632 return NULL;
1633 }
1634 }
1635 }
1636 if (addr[0] && strcmp(addr, "*")) {
1637 a.addr.bitlen = 32;
1638 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
1639 return NULL;
1640 }
1641 fam = AF_NETLINK;
1642 goto out;
1643 }
1644
1645 if (fam == AF_VSOCK || strncmp(addr, "vsock:", 6) == 0) {
1646 __u32 cid = ~(__u32)0;
1647
1648 a.addr.family = AF_VSOCK;
1649 if (strncmp(addr, "vsock:", 6) == 0)
1650 addr += 6;
1651
1652 if (is_port)
1653 port = addr;
1654 else {
1655 port = strchr(addr, ':');
1656 if (port) {
1657 *port = '\0';
1658 port++;
1659 }
1660 }
1661
1662 if (port && strcmp(port, "*") &&
1663 get_u32((__u32 *)&a.port, port, 0))
1664 return NULL;
1665
1666 if (addr[0] && strcmp(addr, "*")) {
1667 a.addr.bitlen = 32;
1668 if (get_u32(&cid, addr, 0))
1669 return NULL;
1670 }
1671 vsock_set_inet_prefix(&a.addr, cid);
1672 fam = AF_VSOCK;
1673 goto out;
1674 }
1675
1676 if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
1677 fam = AF_INET;
1678 if (!strncmp(addr, "inet:", 5))
1679 addr += 5;
1680 } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
1681 fam = AF_INET6;
1682 if (!strncmp(addr, "inet6:", 6))
1683 addr += 6;
1684 }
1685
1686 /* URL-like literal [] */
1687 if (addr[0] == '[') {
1688 addr++;
1689 if ((port = strchr(addr, ']')) == NULL)
1690 return NULL;
1691 *port++ = 0;
1692 } else if (addr[0] == '*') {
1693 port = addr+1;
1694 } else {
1695 port = strrchr(strchr(addr, '/') ? : addr, ':');
1696 }
1697
1698 if (is_port)
1699 port = addr;
1700
1701 if (port && *port) {
1702 if (*port == ':')
1703 *port++ = 0;
1704
1705 if (*port && *port != '*') {
1706 if (get_integer(&a.port, port, 0)) {
1707 struct servent *se1 = NULL;
1708 struct servent *se2 = NULL;
1709
1710 if (current_filter.dbs&(1<<UDP_DB))
1711 se1 = getservbyname(port, UDP_PROTO);
1712 if (current_filter.dbs&(1<<TCP_DB))
1713 se2 = getservbyname(port, TCP_PROTO);
1714 if (se1 && se2 && se1->s_port != se2->s_port) {
1715 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1716 return NULL;
1717 }
1718 if (!se1)
1719 se1 = se2;
1720 if (se1) {
1721 a.port = ntohs(se1->s_port);
1722 } else {
1723 struct scache *s;
1724
1725 for (s = rlist; s; s = s->next) {
1726 if ((s->proto == UDP_PROTO &&
1727 (current_filter.dbs&(1<<UDP_DB))) ||
1728 (s->proto == TCP_PROTO &&
1729 (current_filter.dbs&(1<<TCP_DB)))) {
1730 if (s->name && strcmp(s->name, port) == 0) {
1731 if (a.port > 0 && a.port != s->port) {
1732 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1733 return NULL;
1734 }
1735 a.port = s->port;
1736 }
1737 }
1738 }
1739 if (a.port <= 0) {
1740 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1741 return NULL;
1742 }
1743 }
1744 }
1745 }
1746 }
1747 if (!is_port && *addr && *addr != '*') {
1748 if (get_prefix_1(&a.addr, addr, fam)) {
1749 if (get_dns_host(&a, addr, fam)) {
1750 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1751 return NULL;
1752 }
1753 }
1754 }
1755
1756 out:
1757 if (fam != AF_UNSPEC) {
1758 int states = f->states;
1759 f->families = 0;
1760 filter_af_set(f, fam);
1761 filter_states_set(f, states);
1762 }
1763
1764 res = malloc(sizeof(*res));
1765 if (res)
1766 memcpy(res, &a, sizeof(a));
1767 return res;
1768 }
1769
1770 void *parse_markmask(const char *markmask)
1771 {
1772 struct aafilter a, *res;
1773
1774 if (strchr(markmask, '/')) {
1775 if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
1776 return NULL;
1777 } else {
1778 a.mask = 0xffffffff;
1779 if (sscanf(markmask, "%i", &a.mark) != 1)
1780 return NULL;
1781 }
1782
1783 res = malloc(sizeof(*res));
1784 if (res)
1785 memcpy(res, &a, sizeof(a));
1786 return res;
1787 }
1788
1789 static void proc_ctx_print(struct sockstat *s)
1790 {
1791 char *buf;
1792
1793 if (show_proc_ctx || show_sock_ctx) {
1794 if (find_entry(s->ino, &buf,
1795 (show_proc_ctx & show_sock_ctx) ?
1796 PROC_SOCK_CTX : PROC_CTX) > 0) {
1797 printf(" users:(%s)", buf);
1798 free(buf);
1799 }
1800 } else if (show_users) {
1801 if (find_entry(s->ino, &buf, USERS) > 0) {
1802 printf(" users:(%s)", buf);
1803 free(buf);
1804 }
1805 }
1806 }
1807
1808 static void inet_stats_print(struct sockstat *s)
1809 {
1810 sock_state_print(s);
1811
1812 inet_addr_print(&s->local, s->lport, s->iface);
1813 inet_addr_print(&s->remote, s->rport, 0);
1814
1815 proc_ctx_print(s);
1816 }
1817
1818 static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
1819 sockstat * s)
1820 {
1821 s->local.family = s->remote.family = family;
1822 if (family == AF_INET) {
1823 sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
1824 sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
1825 s->local.bytelen = s->remote.bytelen = 4;
1826 return 0;
1827 } else {
1828 sscanf(loc, "%08x%08x%08x%08x:%x",
1829 s->local.data,
1830 s->local.data + 1,
1831 s->local.data + 2,
1832 s->local.data + 3,
1833 &s->lport);
1834 sscanf(rem, "%08x%08x%08x%08x:%x",
1835 s->remote.data,
1836 s->remote.data + 1,
1837 s->remote.data + 2,
1838 s->remote.data + 3,
1839 &s->rport);
1840 s->local.bytelen = s->remote.bytelen = 16;
1841 return 0;
1842 }
1843 return -1;
1844 }
1845
1846 static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
1847 {
1848 char *p;
1849
1850 if ((p = strchr(line, ':')) == NULL)
1851 return -1;
1852
1853 *loc = p+2;
1854 if ((p = strchr(*loc, ':')) == NULL)
1855 return -1;
1856
1857 p[5] = 0;
1858 *rem = p+6;
1859 if ((p = strchr(*rem, ':')) == NULL)
1860 return -1;
1861
1862 p[5] = 0;
1863 *data = p+6;
1864 return 0;
1865 }
1866
1867 static char *sprint_bw(char *buf, double bw)
1868 {
1869 if (bw > 1000000.)
1870 sprintf(buf, "%.1fM", bw / 1000000.);
1871 else if (bw > 1000.)
1872 sprintf(buf, "%.1fK", bw / 1000.);
1873 else
1874 sprintf(buf, "%g", bw);
1875
1876 return buf;
1877 }
1878
1879 static void sctp_stats_print(struct sctp_info *s)
1880 {
1881 if (s->sctpi_tag)
1882 printf(" tag:%x", s->sctpi_tag);
1883 if (s->sctpi_state)
1884 printf(" state:%s", sctp_sstate_name[s->sctpi_state]);
1885 if (s->sctpi_rwnd)
1886 printf(" rwnd:%d", s->sctpi_rwnd);
1887 if (s->sctpi_unackdata)
1888 printf(" unackdata:%d", s->sctpi_unackdata);
1889 if (s->sctpi_penddata)
1890 printf(" penddata:%d", s->sctpi_penddata);
1891 if (s->sctpi_instrms)
1892 printf(" instrms:%d", s->sctpi_instrms);
1893 if (s->sctpi_outstrms)
1894 printf(" outstrms:%d", s->sctpi_outstrms);
1895 if (s->sctpi_inqueue)
1896 printf(" inqueue:%d", s->sctpi_inqueue);
1897 if (s->sctpi_outqueue)
1898 printf(" outqueue:%d", s->sctpi_outqueue);
1899 if (s->sctpi_overall_error)
1900 printf(" overerr:%d", s->sctpi_overall_error);
1901 if (s->sctpi_max_burst)
1902 printf(" maxburst:%d", s->sctpi_max_burst);
1903 if (s->sctpi_maxseg)
1904 printf(" maxseg:%d", s->sctpi_maxseg);
1905 if (s->sctpi_peer_rwnd)
1906 printf(" prwnd:%d", s->sctpi_peer_rwnd);
1907 if (s->sctpi_peer_tag)
1908 printf(" ptag:%x", s->sctpi_peer_tag);
1909 if (s->sctpi_peer_capable)
1910 printf(" pcapable:%d", s->sctpi_peer_capable);
1911 if (s->sctpi_peer_sack)
1912 printf(" psack:%d", s->sctpi_peer_sack);
1913 if (s->sctpi_s_autoclose)
1914 printf(" autoclose:%d", s->sctpi_s_autoclose);
1915 if (s->sctpi_s_adaptation_ind)
1916 printf(" adapind:%d", s->sctpi_s_adaptation_ind);
1917 if (s->sctpi_s_pd_point)
1918 printf(" pdpoint:%d", s->sctpi_s_pd_point);
1919 if (s->sctpi_s_nodelay)
1920 printf(" nodealy:%d", s->sctpi_s_nodelay);
1921 if (s->sctpi_s_disable_fragments)
1922 printf(" nofrag:%d", s->sctpi_s_disable_fragments);
1923 if (s->sctpi_s_v4mapped)
1924 printf(" v4mapped:%d", s->sctpi_s_v4mapped);
1925 if (s->sctpi_s_frag_interleave)
1926 printf(" fraginl:%d", s->sctpi_s_frag_interleave);
1927 }
1928
1929 static void tcp_stats_print(struct tcpstat *s)
1930 {
1931 char b1[64];
1932
1933 if (s->has_ts_opt)
1934 printf(" ts");
1935 if (s->has_sack_opt)
1936 printf(" sack");
1937 if (s->has_ecn_opt)
1938 printf(" ecn");
1939 if (s->has_ecnseen_opt)
1940 printf(" ecnseen");
1941 if (s->has_fastopen_opt)
1942 printf(" fastopen");
1943 if (s->cong_alg[0])
1944 printf(" %s", s->cong_alg);
1945 if (s->has_wscale_opt)
1946 printf(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
1947 if (s->rto)
1948 printf(" rto:%g", s->rto);
1949 if (s->backoff)
1950 printf(" backoff:%u", s->backoff);
1951 if (s->rtt)
1952 printf(" rtt:%g/%g", s->rtt, s->rttvar);
1953 if (s->ato)
1954 printf(" ato:%g", s->ato);
1955
1956 if (s->qack)
1957 printf(" qack:%d", s->qack);
1958 if (s->qack & 1)
1959 printf(" bidir");
1960
1961 if (s->mss)
1962 printf(" mss:%d", s->mss);
1963 if (s->rcv_mss)
1964 printf(" rcvmss:%d", s->rcv_mss);
1965 if (s->advmss)
1966 printf(" advmss:%d", s->advmss);
1967 if (s->cwnd)
1968 printf(" cwnd:%u", s->cwnd);
1969 if (s->ssthresh)
1970 printf(" ssthresh:%d", s->ssthresh);
1971
1972 if (s->bytes_acked)
1973 printf(" bytes_acked:%llu", s->bytes_acked);
1974 if (s->bytes_received)
1975 printf(" bytes_received:%llu", s->bytes_received);
1976 if (s->segs_out)
1977 printf(" segs_out:%u", s->segs_out);
1978 if (s->segs_in)
1979 printf(" segs_in:%u", s->segs_in);
1980 if (s->data_segs_out)
1981 printf(" data_segs_out:%u", s->data_segs_out);
1982 if (s->data_segs_in)
1983 printf(" data_segs_in:%u", s->data_segs_in);
1984
1985 if (s->dctcp && s->dctcp->enabled) {
1986 struct dctcpstat *dctcp = s->dctcp;
1987
1988 printf(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
1989 dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
1990 dctcp->ab_tot);
1991 } else if (s->dctcp) {
1992 printf(" dctcp:fallback_mode");
1993 }
1994
1995 if (s->bbr_info) {
1996 __u64 bw;
1997
1998 bw = s->bbr_info->bbr_bw_hi;
1999 bw <<= 32;
2000 bw |= s->bbr_info->bbr_bw_lo;
2001
2002 printf(" bbr:(bw:%sbps,mrtt:%g",
2003 sprint_bw(b1, bw * 8.0),
2004 (double)s->bbr_info->bbr_min_rtt / 1000.0);
2005 if (s->bbr_info->bbr_pacing_gain)
2006 printf(",pacing_gain:%g",
2007 (double)s->bbr_info->bbr_pacing_gain / 256.0);
2008 if (s->bbr_info->bbr_cwnd_gain)
2009 printf(",cwnd_gain:%g",
2010 (double)s->bbr_info->bbr_cwnd_gain / 256.0);
2011 printf(")");
2012 }
2013
2014 if (s->send_bps)
2015 printf(" send %sbps", sprint_bw(b1, s->send_bps));
2016 if (s->lastsnd)
2017 printf(" lastsnd:%u", s->lastsnd);
2018 if (s->lastrcv)
2019 printf(" lastrcv:%u", s->lastrcv);
2020 if (s->lastack)
2021 printf(" lastack:%u", s->lastack);
2022
2023 if (s->pacing_rate) {
2024 printf(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
2025 if (s->pacing_rate_max)
2026 printf("/%sbps", sprint_bw(b1,
2027 s->pacing_rate_max));
2028 }
2029
2030 if (s->delivery_rate)
2031 printf(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
2032 if (s->app_limited)
2033 printf(" app_limited");
2034
2035 if (s->busy_time) {
2036 printf(" busy:%llums", s->busy_time / 1000);
2037 if (s->rwnd_limited)
2038 printf(" rwnd_limited:%llums(%.1f%%)",
2039 s->rwnd_limited / 1000,
2040 100.0 * s->rwnd_limited / s->busy_time);
2041 if (s->sndbuf_limited)
2042 printf(" sndbuf_limited:%llums(%.1f%%)",
2043 s->sndbuf_limited / 1000,
2044 100.0 * s->sndbuf_limited / s->busy_time);
2045 }
2046
2047 if (s->unacked)
2048 printf(" unacked:%u", s->unacked);
2049 if (s->retrans || s->retrans_total)
2050 printf(" retrans:%u/%u", s->retrans, s->retrans_total);
2051 if (s->lost)
2052 printf(" lost:%u", s->lost);
2053 if (s->sacked && s->ss.state != SS_LISTEN)
2054 printf(" sacked:%u", s->sacked);
2055 if (s->fackets)
2056 printf(" fackets:%u", s->fackets);
2057 if (s->reordering != 3)
2058 printf(" reordering:%d", s->reordering);
2059 if (s->rcv_rtt)
2060 printf(" rcv_rtt:%g", s->rcv_rtt);
2061 if (s->rcv_space)
2062 printf(" rcv_space:%d", s->rcv_space);
2063 if (s->not_sent)
2064 printf(" notsent:%u", s->not_sent);
2065 if (s->min_rtt)
2066 printf(" minrtt:%g", s->min_rtt);
2067 }
2068
2069 static void tcp_timer_print(struct tcpstat *s)
2070 {
2071 static const char * const tmr_name[] = {
2072 "off",
2073 "on",
2074 "keepalive",
2075 "timewait",
2076 "persist",
2077 "unknown"
2078 };
2079
2080 if (s->timer) {
2081 if (s->timer > 4)
2082 s->timer = 5;
2083 printf(" timer:(%s,%s,%d)",
2084 tmr_name[s->timer],
2085 print_ms_timer(s->timeout),
2086 s->retrans);
2087 }
2088 }
2089
2090 static void sctp_timer_print(struct tcpstat *s)
2091 {
2092 if (s->timer)
2093 printf(" timer:(T3_RTX,%s,%d)",
2094 print_ms_timer(s->timeout), s->retrans);
2095 }
2096
2097 static int tcp_show_line(char *line, const struct filter *f, int family)
2098 {
2099 int rto = 0, ato = 0;
2100 struct tcpstat s = {};
2101 char *loc, *rem, *data;
2102 char opt[256];
2103 int n;
2104 int hz = get_user_hz();
2105
2106 if (proc_inet_split_line(line, &loc, &rem, &data))
2107 return -1;
2108
2109 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2110
2111 if (!(f->states & (1 << state)))
2112 return 0;
2113
2114 proc_parse_inet_addr(loc, rem, family, &s.ss);
2115
2116 if (f->f && run_ssfilter(f->f, &s.ss) == 0)
2117 return 0;
2118
2119 opt[0] = 0;
2120 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
2121 &s.ss.state, &s.ss.wq, &s.ss.rq,
2122 &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
2123 &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
2124 &s.ssthresh, opt);
2125
2126 if (n < 17)
2127 opt[0] = 0;
2128
2129 if (n < 12) {
2130 rto = 0;
2131 s.cwnd = 2;
2132 s.ssthresh = -1;
2133 ato = s.qack = 0;
2134 }
2135
2136 s.retrans = s.timer != 1 ? s.probes : s.retrans;
2137 s.timeout = (s.timeout * 1000 + hz - 1) / hz;
2138 s.ato = (double)ato / hz;
2139 s.qack /= 2;
2140 s.rto = (double)rto;
2141 s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
2142 s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
2143 s.ss.type = IPPROTO_TCP;
2144
2145 inet_stats_print(&s.ss);
2146
2147 if (show_options)
2148 tcp_timer_print(&s);
2149
2150 if (show_details) {
2151 sock_details_print(&s.ss);
2152 if (opt[0])
2153 printf(" opt:\"%s\"", opt);
2154 }
2155
2156 if (show_tcpinfo)
2157 tcp_stats_print(&s);
2158
2159 printf("\n");
2160 return 0;
2161 }
2162
2163 static int generic_record_read(FILE *fp,
2164 int (*worker)(char*, const struct filter *, int),
2165 const struct filter *f, int fam)
2166 {
2167 char line[256];
2168
2169 /* skip header */
2170 if (fgets(line, sizeof(line), fp) == NULL)
2171 goto outerr;
2172
2173 while (fgets(line, sizeof(line), fp) != NULL) {
2174 int n = strlen(line);
2175
2176 if (n == 0 || line[n-1] != '\n') {
2177 errno = -EINVAL;
2178 return -1;
2179 }
2180 line[n-1] = 0;
2181
2182 if (worker(line, f, fam) < 0)
2183 return 0;
2184 }
2185 outerr:
2186
2187 return ferror(fp) ? -1 : 0;
2188 }
2189
2190 static void print_skmeminfo(struct rtattr *tb[], int attrtype)
2191 {
2192 const __u32 *skmeminfo;
2193
2194 if (!tb[attrtype]) {
2195 if (attrtype == INET_DIAG_SKMEMINFO) {
2196 if (!tb[INET_DIAG_MEMINFO])
2197 return;
2198
2199 const struct inet_diag_meminfo *minfo =
2200 RTA_DATA(tb[INET_DIAG_MEMINFO]);
2201
2202 printf(" mem:(r%u,w%u,f%u,t%u)",
2203 minfo->idiag_rmem,
2204 minfo->idiag_wmem,
2205 minfo->idiag_fmem,
2206 minfo->idiag_tmem);
2207 }
2208 return;
2209 }
2210
2211 skmeminfo = RTA_DATA(tb[attrtype]);
2212
2213 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
2214 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
2215 skmeminfo[SK_MEMINFO_RCVBUF],
2216 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
2217 skmeminfo[SK_MEMINFO_SNDBUF],
2218 skmeminfo[SK_MEMINFO_FWD_ALLOC],
2219 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
2220 skmeminfo[SK_MEMINFO_OPTMEM]);
2221
2222 if (RTA_PAYLOAD(tb[attrtype]) >=
2223 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
2224 printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
2225
2226 if (RTA_PAYLOAD(tb[attrtype]) >=
2227 (SK_MEMINFO_DROPS + 1) * sizeof(__u32))
2228 printf(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
2229
2230 printf(")");
2231 }
2232
2233 static void print_md5sig(struct tcp_diag_md5sig *sig)
2234 {
2235 printf("%s/%d=",
2236 format_host(sig->tcpm_family,
2237 sig->tcpm_family == AF_INET6 ? 16 : 4,
2238 &sig->tcpm_addr),
2239 sig->tcpm_prefixlen);
2240 print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
2241 }
2242
2243 #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
2244
2245 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2246 struct rtattr *tb[])
2247 {
2248 double rtt = 0;
2249 struct tcpstat s = {};
2250
2251 s.ss.state = r->idiag_state;
2252
2253 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2254
2255 if (tb[INET_DIAG_INFO]) {
2256 struct tcp_info *info;
2257 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2258
2259 /* workaround for older kernels with less fields */
2260 if (len < sizeof(*info)) {
2261 info = alloca(sizeof(*info));
2262 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2263 memset((char *)info + len, 0, sizeof(*info) - len);
2264 } else
2265 info = RTA_DATA(tb[INET_DIAG_INFO]);
2266
2267 if (show_options) {
2268 s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
2269 s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
2270 s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
2271 s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
2272 s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
2273 }
2274
2275 if (tb[INET_DIAG_CONG])
2276 strncpy(s.cong_alg,
2277 rta_getattr_str(tb[INET_DIAG_CONG]),
2278 sizeof(s.cong_alg) - 1);
2279
2280 if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
2281 s.has_wscale_opt = true;
2282 s.snd_wscale = info->tcpi_snd_wscale;
2283 s.rcv_wscale = info->tcpi_rcv_wscale;
2284 }
2285
2286 if (info->tcpi_rto && info->tcpi_rto != 3000000)
2287 s.rto = (double)info->tcpi_rto / 1000;
2288
2289 s.backoff = info->tcpi_backoff;
2290 s.rtt = (double)info->tcpi_rtt / 1000;
2291 s.rttvar = (double)info->tcpi_rttvar / 1000;
2292 s.ato = (double)info->tcpi_ato / 1000;
2293 s.mss = info->tcpi_snd_mss;
2294 s.rcv_mss = info->tcpi_rcv_mss;
2295 s.advmss = info->tcpi_advmss;
2296 s.rcv_space = info->tcpi_rcv_space;
2297 s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
2298 s.lastsnd = info->tcpi_last_data_sent;
2299 s.lastrcv = info->tcpi_last_data_recv;
2300 s.lastack = info->tcpi_last_ack_recv;
2301 s.unacked = info->tcpi_unacked;
2302 s.retrans = info->tcpi_retrans;
2303 s.retrans_total = info->tcpi_total_retrans;
2304 s.lost = info->tcpi_lost;
2305 s.sacked = info->tcpi_sacked;
2306 s.reordering = info->tcpi_reordering;
2307 s.rcv_space = info->tcpi_rcv_space;
2308 s.cwnd = info->tcpi_snd_cwnd;
2309
2310 if (info->tcpi_snd_ssthresh < 0xFFFF)
2311 s.ssthresh = info->tcpi_snd_ssthresh;
2312
2313 rtt = (double) info->tcpi_rtt;
2314 if (tb[INET_DIAG_VEGASINFO]) {
2315 const struct tcpvegas_info *vinfo
2316 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
2317
2318 if (vinfo->tcpv_enabled &&
2319 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
2320 rtt = vinfo->tcpv_rtt;
2321 }
2322
2323 if (tb[INET_DIAG_DCTCPINFO]) {
2324 struct dctcpstat *dctcp = malloc(sizeof(struct
2325 dctcpstat));
2326
2327 const struct tcp_dctcp_info *dinfo
2328 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
2329
2330 dctcp->enabled = !!dinfo->dctcp_enabled;
2331 dctcp->ce_state = dinfo->dctcp_ce_state;
2332 dctcp->alpha = dinfo->dctcp_alpha;
2333 dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
2334 dctcp->ab_tot = dinfo->dctcp_ab_tot;
2335 s.dctcp = dctcp;
2336 }
2337
2338 if (tb[INET_DIAG_BBRINFO]) {
2339 const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
2340 int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
2341 sizeof(*s.bbr_info));
2342
2343 s.bbr_info = calloc(1, sizeof(*s.bbr_info));
2344 if (s.bbr_info && bbr_info)
2345 memcpy(s.bbr_info, bbr_info, len);
2346 }
2347
2348 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
2349 s.send_bps = (double) info->tcpi_snd_cwnd *
2350 (double)info->tcpi_snd_mss * 8000000. / rtt;
2351 }
2352
2353 if (info->tcpi_pacing_rate &&
2354 info->tcpi_pacing_rate != ~0ULL) {
2355 s.pacing_rate = info->tcpi_pacing_rate * 8.;
2356
2357 if (info->tcpi_max_pacing_rate &&
2358 info->tcpi_max_pacing_rate != ~0ULL)
2359 s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
2360 }
2361 s.bytes_acked = info->tcpi_bytes_acked;
2362 s.bytes_received = info->tcpi_bytes_received;
2363 s.segs_out = info->tcpi_segs_out;
2364 s.segs_in = info->tcpi_segs_in;
2365 s.data_segs_out = info->tcpi_data_segs_out;
2366 s.data_segs_in = info->tcpi_data_segs_in;
2367 s.not_sent = info->tcpi_notsent_bytes;
2368 if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
2369 s.min_rtt = (double) info->tcpi_min_rtt / 1000;
2370 s.delivery_rate = info->tcpi_delivery_rate * 8.;
2371 s.app_limited = info->tcpi_delivery_rate_app_limited;
2372 s.busy_time = info->tcpi_busy_time;
2373 s.rwnd_limited = info->tcpi_rwnd_limited;
2374 s.sndbuf_limited = info->tcpi_sndbuf_limited;
2375 tcp_stats_print(&s);
2376 free(s.dctcp);
2377 free(s.bbr_info);
2378 }
2379 if (tb[INET_DIAG_MD5SIG]) {
2380 struct tcp_diag_md5sig *sig = RTA_DATA(tb[INET_DIAG_MD5SIG]);
2381 int len = RTA_PAYLOAD(tb[INET_DIAG_MD5SIG]);
2382
2383 printf(" md5keys:");
2384 print_md5sig(sig++);
2385 for (len -= sizeof(*sig); len > 0; len -= sizeof(*sig)) {
2386 printf(",");
2387 print_md5sig(sig++);
2388 }
2389 }
2390 }
2391
2392 static const char *format_host_sa(struct sockaddr_storage *sa)
2393 {
2394 union {
2395 struct sockaddr_in sin;
2396 struct sockaddr_in6 sin6;
2397 } *saddr = (void *)sa;
2398
2399 switch (sa->ss_family) {
2400 case AF_INET:
2401 return format_host(AF_INET, 4, &saddr->sin.sin_addr);
2402 case AF_INET6:
2403 return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
2404 default:
2405 return "";
2406 }
2407 }
2408
2409 static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2410 struct rtattr *tb[])
2411 {
2412 struct sockaddr_storage *sa;
2413 int len;
2414
2415 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2416
2417 if (tb[INET_DIAG_LOCALS]) {
2418 len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
2419 sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
2420
2421 printf("locals:%s", format_host_sa(sa));
2422 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2423 printf(",%s", format_host_sa(sa));
2424
2425 }
2426 if (tb[INET_DIAG_PEERS]) {
2427 len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
2428 sa = RTA_DATA(tb[INET_DIAG_PEERS]);
2429
2430 printf(" peers:%s", format_host_sa(sa));
2431 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2432 printf(",%s", format_host_sa(sa));
2433 }
2434 if (tb[INET_DIAG_INFO]) {
2435 struct sctp_info *info;
2436 len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2437
2438 /* workaround for older kernels with less fields */
2439 if (len < sizeof(*info)) {
2440 info = alloca(sizeof(*info));
2441 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2442 memset((char *)info + len, 0, sizeof(*info) - len);
2443 } else
2444 info = RTA_DATA(tb[INET_DIAG_INFO]);
2445
2446 sctp_stats_print(info);
2447 }
2448 }
2449
2450 static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
2451 {
2452 struct rtattr *tb[INET_DIAG_MAX+1];
2453 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2454
2455 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2456 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2457
2458 s->state = r->idiag_state;
2459 s->local.family = s->remote.family = r->idiag_family;
2460 s->lport = ntohs(r->id.idiag_sport);
2461 s->rport = ntohs(r->id.idiag_dport);
2462 s->wq = r->idiag_wqueue;
2463 s->rq = r->idiag_rqueue;
2464 s->ino = r->idiag_inode;
2465 s->uid = r->idiag_uid;
2466 s->iface = r->id.idiag_if;
2467 s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
2468
2469 s->mark = 0;
2470 if (tb[INET_DIAG_MARK])
2471 s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]);
2472 if (tb[INET_DIAG_PROTOCOL])
2473 s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2474 else
2475 s->raw_prot = 0;
2476
2477 if (s->local.family == AF_INET)
2478 s->local.bytelen = s->remote.bytelen = 4;
2479 else
2480 s->local.bytelen = s->remote.bytelen = 16;
2481
2482 memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
2483 memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
2484 }
2485
2486 static int inet_show_sock(struct nlmsghdr *nlh,
2487 struct sockstat *s)
2488 {
2489 struct rtattr *tb[INET_DIAG_MAX+1];
2490 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2491
2492 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2493 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2494
2495 if (tb[INET_DIAG_PROTOCOL])
2496 s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2497
2498 inet_stats_print(s);
2499
2500 if (show_options) {
2501 struct tcpstat t = {};
2502
2503 t.timer = r->idiag_timer;
2504 t.timeout = r->idiag_expires;
2505 t.retrans = r->idiag_retrans;
2506 if (s->type == IPPROTO_SCTP)
2507 sctp_timer_print(&t);
2508 else
2509 tcp_timer_print(&t);
2510 }
2511
2512 if (show_details) {
2513 sock_details_print(s);
2514 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY]) {
2515 unsigned char v6only;
2516
2517 v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]);
2518 printf(" v6only:%u", v6only);
2519 }
2520 if (tb[INET_DIAG_SHUTDOWN]) {
2521 unsigned char mask;
2522
2523 mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]);
2524 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2525 }
2526 }
2527
2528 if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
2529 printf("\n\t");
2530 if (s->type == IPPROTO_SCTP)
2531 sctp_show_info(nlh, r, tb);
2532 else
2533 tcp_show_info(nlh, r, tb);
2534 }
2535 sctp_ino = s->ino;
2536
2537 printf("\n");
2538 return 0;
2539 }
2540
2541 static int tcpdiag_send(int fd, int protocol, struct filter *f)
2542 {
2543 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2544 struct {
2545 struct nlmsghdr nlh;
2546 struct inet_diag_req r;
2547 } req = {
2548 .nlh.nlmsg_len = sizeof(req),
2549 .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
2550 .nlh.nlmsg_seq = MAGIC_SEQ,
2551 .r.idiag_family = AF_INET,
2552 .r.idiag_states = f->states,
2553 };
2554 char *bc = NULL;
2555 int bclen;
2556 struct msghdr msg;
2557 struct rtattr rta;
2558 struct iovec iov[3];
2559 int iovlen = 1;
2560
2561 if (protocol == IPPROTO_UDP)
2562 return -1;
2563
2564 if (protocol == IPPROTO_TCP)
2565 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
2566 else
2567 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
2568 if (show_mem) {
2569 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2570 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2571 }
2572
2573 if (show_tcpinfo) {
2574 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2575 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2576 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2577 }
2578
2579 iov[0] = (struct iovec){
2580 .iov_base = &req,
2581 .iov_len = sizeof(req)
2582 };
2583 if (f->f) {
2584 bclen = ssfilter_bytecompile(f->f, &bc);
2585 if (bclen) {
2586 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2587 rta.rta_len = RTA_LENGTH(bclen);
2588 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2589 iov[2] = (struct iovec){ bc, bclen };
2590 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2591 iovlen = 3;
2592 }
2593 }
2594
2595 msg = (struct msghdr) {
2596 .msg_name = (void *)&nladdr,
2597 .msg_namelen = sizeof(nladdr),
2598 .msg_iov = iov,
2599 .msg_iovlen = iovlen,
2600 };
2601
2602 if (sendmsg(fd, &msg, 0) < 0) {
2603 close(fd);
2604 return -1;
2605 }
2606
2607 return 0;
2608 }
2609
2610 static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
2611 {
2612 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2613 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2614 char *bc = NULL;
2615 int bclen;
2616 struct msghdr msg;
2617 struct rtattr rta;
2618 struct iovec iov[3];
2619 int iovlen = 1;
2620
2621 if (family == PF_UNSPEC)
2622 return tcpdiag_send(fd, protocol, f);
2623
2624 memset(&req.r, 0, sizeof(req.r));
2625 req.r.sdiag_family = family;
2626 req.r.sdiag_protocol = protocol;
2627 req.r.idiag_states = f->states;
2628 if (show_mem) {
2629 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2630 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2631 }
2632
2633 if (show_tcpinfo) {
2634 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2635 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2636 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2637 }
2638
2639 iov[0] = (struct iovec){
2640 .iov_base = &req,
2641 .iov_len = sizeof(req)
2642 };
2643 if (f->f) {
2644 bclen = ssfilter_bytecompile(f->f, &bc);
2645 if (bclen) {
2646 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2647 rta.rta_len = RTA_LENGTH(bclen);
2648 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2649 iov[2] = (struct iovec){ bc, bclen };
2650 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2651 iovlen = 3;
2652 }
2653 }
2654
2655 msg = (struct msghdr) {
2656 .msg_name = (void *)&nladdr,
2657 .msg_namelen = sizeof(nladdr),
2658 .msg_iov = iov,
2659 .msg_iovlen = iovlen,
2660 };
2661
2662 if (sendmsg(fd, &msg, 0) < 0) {
2663 close(fd);
2664 return -1;
2665 }
2666
2667 return 0;
2668 }
2669
2670 struct inet_diag_arg {
2671 struct filter *f;
2672 int protocol;
2673 struct rtnl_handle *rth;
2674 };
2675
2676 static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
2677 {
2678 struct inet_diag_msg *d = NLMSG_DATA(h);
2679 struct inet_diag_arg *diag_arg = arg;
2680 struct rtnl_handle *rth = diag_arg->rth;
2681
2682 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2683
2684 req.nlh.nlmsg_type = SOCK_DESTROY;
2685 req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
2686 req.nlh.nlmsg_seq = ++rth->seq;
2687 req.r.sdiag_family = d->idiag_family;
2688 req.r.sdiag_protocol = diag_arg->protocol;
2689 req.r.id = d->id;
2690
2691 if (diag_arg->protocol == IPPROTO_RAW) {
2692 struct inet_diag_req_raw *raw = (void *)&req.r;
2693
2694 BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
2695 raw->sdiag_raw_protocol = s->raw_prot;
2696 }
2697
2698 return rtnl_talk(rth, &req.nlh, NULL, 0);
2699 }
2700
2701 static int show_one_inet_sock(const struct sockaddr_nl *addr,
2702 struct nlmsghdr *h, void *arg)
2703 {
2704 int err;
2705 struct inet_diag_arg *diag_arg = arg;
2706 struct inet_diag_msg *r = NLMSG_DATA(h);
2707 struct sockstat s = {};
2708
2709 if (!(diag_arg->f->families & FAMILY_MASK(r->idiag_family)))
2710 return 0;
2711
2712 parse_diag_msg(h, &s);
2713 s.type = diag_arg->protocol;
2714
2715 if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
2716 return 0;
2717
2718 if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
2719 if (errno == EOPNOTSUPP || errno == ENOENT) {
2720 /* Socket can't be closed, or is already closed. */
2721 return 0;
2722 } else {
2723 perror("SOCK_DESTROY answers");
2724 return -1;
2725 }
2726 }
2727
2728 err = inet_show_sock(h, &s);
2729 if (err < 0)
2730 return err;
2731
2732 return 0;
2733 }
2734
2735 static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
2736 {
2737 int err = 0;
2738 struct rtnl_handle rth, rth2;
2739 int family = PF_INET;
2740 struct inet_diag_arg arg = { .f = f, .protocol = protocol };
2741
2742 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
2743 return -1;
2744
2745 if (f->kill) {
2746 if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
2747 rtnl_close(&rth);
2748 return -1;
2749 }
2750 arg.rth = &rth2;
2751 }
2752
2753 rth.dump = MAGIC_SEQ;
2754 rth.dump_fp = dump_fp;
2755 if (preferred_family == PF_INET6)
2756 family = PF_INET6;
2757
2758 again:
2759 if ((err = sockdiag_send(family, rth.fd, protocol, f)))
2760 goto Exit;
2761
2762 if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
2763 if (family != PF_UNSPEC) {
2764 family = PF_UNSPEC;
2765 goto again;
2766 }
2767 goto Exit;
2768 }
2769 if (family == PF_INET && preferred_family != PF_INET) {
2770 family = PF_INET6;
2771 goto again;
2772 }
2773
2774 Exit:
2775 rtnl_close(&rth);
2776 if (arg.rth)
2777 rtnl_close(arg.rth);
2778 return err;
2779 }
2780
2781 static int tcp_show_netlink_file(struct filter *f)
2782 {
2783 FILE *fp;
2784 char buf[16384];
2785 int err = -1;
2786
2787 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
2788 perror("fopen($TCPDIAG_FILE)");
2789 return err;
2790 }
2791
2792 while (1) {
2793 int status, err2;
2794 struct nlmsghdr *h = (struct nlmsghdr *)buf;
2795 struct sockstat s = {};
2796
2797 status = fread(buf, 1, sizeof(*h), fp);
2798 if (status < 0) {
2799 perror("Reading header from $TCPDIAG_FILE");
2800 break;
2801 }
2802 if (status != sizeof(*h)) {
2803 perror("Unexpected EOF reading $TCPDIAG_FILE");
2804 break;
2805 }
2806
2807 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
2808
2809 if (status < 0) {
2810 perror("Reading $TCPDIAG_FILE");
2811 break;
2812 }
2813 if (status + sizeof(*h) < h->nlmsg_len) {
2814 perror("Unexpected EOF reading $TCPDIAG_FILE");
2815 break;
2816 }
2817
2818 /* The only legal exit point */
2819 if (h->nlmsg_type == NLMSG_DONE) {
2820 err = 0;
2821 break;
2822 }
2823
2824 if (h->nlmsg_type == NLMSG_ERROR) {
2825 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
2826
2827 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2828 fprintf(stderr, "ERROR truncated\n");
2829 } else {
2830 errno = -err->error;
2831 perror("TCPDIAG answered");
2832 }
2833 break;
2834 }
2835
2836 parse_diag_msg(h, &s);
2837 s.type = IPPROTO_TCP;
2838
2839 if (f && f->f && run_ssfilter(f->f, &s) == 0)
2840 continue;
2841
2842 err2 = inet_show_sock(h, &s);
2843 if (err2 < 0) {
2844 err = err2;
2845 break;
2846 }
2847 }
2848
2849 fclose(fp);
2850 return err;
2851 }
2852
2853 static int tcp_show(struct filter *f)
2854 {
2855 FILE *fp = NULL;
2856 char *buf = NULL;
2857 int bufsize = 64*1024;
2858
2859 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2860 return 0;
2861
2862 dg_proto = TCP_PROTO;
2863
2864 if (getenv("TCPDIAG_FILE"))
2865 return tcp_show_netlink_file(f);
2866
2867 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
2868 && inet_show_netlink(f, NULL, IPPROTO_TCP) == 0)
2869 return 0;
2870
2871 /* Sigh... We have to parse /proc/net/tcp... */
2872
2873
2874 /* Estimate amount of sockets and try to allocate
2875 * huge buffer to read all the table at one read.
2876 * Limit it by 16MB though. The assumption is: as soon as
2877 * kernel was able to hold information about N connections,
2878 * it is able to give us some memory for snapshot.
2879 */
2880 if (1) {
2881 get_slabstat(&slabstat);
2882
2883 int guess = slabstat.socks+slabstat.tcp_syns;
2884
2885 if (f->states&(1<<SS_TIME_WAIT))
2886 guess += slabstat.tcp_tws;
2887 if (guess > (16*1024*1024)/128)
2888 guess = (16*1024*1024)/128;
2889 guess *= 128;
2890 if (guess > bufsize)
2891 bufsize = guess;
2892 }
2893 while (bufsize >= 64*1024) {
2894 if ((buf = malloc(bufsize)) != NULL)
2895 break;
2896 bufsize /= 2;
2897 }
2898 if (buf == NULL) {
2899 errno = ENOMEM;
2900 return -1;
2901 }
2902
2903 if (f->families & FAMILY_MASK(AF_INET)) {
2904 if ((fp = net_tcp_open()) == NULL)
2905 goto outerr;
2906
2907 setbuffer(fp, buf, bufsize);
2908 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
2909 goto outerr;
2910 fclose(fp);
2911 }
2912
2913 if ((f->families & FAMILY_MASK(AF_INET6)) &&
2914 (fp = net_tcp6_open()) != NULL) {
2915 setbuffer(fp, buf, bufsize);
2916 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
2917 goto outerr;
2918 fclose(fp);
2919 }
2920
2921 free(buf);
2922 return 0;
2923
2924 outerr:
2925 do {
2926 int saved_errno = errno;
2927
2928 free(buf);
2929 if (fp)
2930 fclose(fp);
2931 errno = saved_errno;
2932 return -1;
2933 } while (0);
2934 }
2935
2936 static int dccp_show(struct filter *f)
2937 {
2938 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2939 return 0;
2940
2941 if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT")
2942 && inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0)
2943 return 0;
2944
2945 return 0;
2946 }
2947
2948 static int sctp_show(struct filter *f)
2949 {
2950 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2951 return 0;
2952
2953 if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
2954 && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
2955 return 0;
2956
2957 return 0;
2958 }
2959
2960 static int dgram_show_line(char *line, const struct filter *f, int family)
2961 {
2962 struct sockstat s = {};
2963 char *loc, *rem, *data;
2964 char opt[256];
2965 int n;
2966
2967 if (proc_inet_split_line(line, &loc, &rem, &data))
2968 return -1;
2969
2970 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2971
2972 if (!(f->states & (1 << state)))
2973 return 0;
2974
2975 proc_parse_inet_addr(loc, rem, family, &s);
2976
2977 if (f->f && run_ssfilter(f->f, &s) == 0)
2978 return 0;
2979
2980 opt[0] = 0;
2981 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
2982 &s.state, &s.wq, &s.rq,
2983 &s.uid, &s.ino,
2984 &s.refcnt, &s.sk, opt);
2985
2986 if (n < 9)
2987 opt[0] = 0;
2988
2989 s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
2990 inet_stats_print(&s);
2991
2992 if (show_details && opt[0])
2993 printf(" opt:\"%s\"", opt);
2994
2995 printf("\n");
2996 return 0;
2997 }
2998
2999 static int udp_show(struct filter *f)
3000 {
3001 FILE *fp = NULL;
3002
3003 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3004 return 0;
3005
3006 dg_proto = UDP_PROTO;
3007
3008 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
3009 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
3010 return 0;
3011
3012 if (f->families&FAMILY_MASK(AF_INET)) {
3013 if ((fp = net_udp_open()) == NULL)
3014 goto outerr;
3015 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
3016 goto outerr;
3017 fclose(fp);
3018 }
3019
3020 if ((f->families&FAMILY_MASK(AF_INET6)) &&
3021 (fp = net_udp6_open()) != NULL) {
3022 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
3023 goto outerr;
3024 fclose(fp);
3025 }
3026 return 0;
3027
3028 outerr:
3029 do {
3030 int saved_errno = errno;
3031
3032 if (fp)
3033 fclose(fp);
3034 errno = saved_errno;
3035 return -1;
3036 } while (0);
3037 }
3038
3039 static int raw_show(struct filter *f)
3040 {
3041 FILE *fp = NULL;
3042
3043 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3044 return 0;
3045
3046 dg_proto = RAW_PROTO;
3047
3048 if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
3049 inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
3050 return 0;
3051
3052 if (f->families&FAMILY_MASK(AF_INET)) {
3053 if ((fp = net_raw_open()) == NULL)
3054 goto outerr;
3055 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
3056 goto outerr;
3057 fclose(fp);
3058 }
3059
3060 if ((f->families&FAMILY_MASK(AF_INET6)) &&
3061 (fp = net_raw6_open()) != NULL) {
3062 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
3063 goto outerr;
3064 fclose(fp);
3065 }
3066 return 0;
3067
3068 outerr:
3069 do {
3070 int saved_errno = errno;
3071
3072 if (fp)
3073 fclose(fp);
3074 errno = saved_errno;
3075 return -1;
3076 } while (0);
3077 }
3078
3079 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
3080
3081 static void unix_list_drop_first(struct sockstat **list)
3082 {
3083 struct sockstat *s = *list;
3084
3085 (*list) = (*list)->next;
3086 free(s->name);
3087 free(s);
3088 }
3089
3090 static bool unix_type_skip(struct sockstat *s, struct filter *f)
3091 {
3092 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
3093 return true;
3094 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
3095 return true;
3096 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
3097 return true;
3098 return false;
3099 }
3100
3101 static void unix_stats_print(struct sockstat *s, struct filter *f)
3102 {
3103 char port_name[30] = {};
3104
3105 sock_state_print(s);
3106
3107 sock_addr_print(s->name ?: "*", " ",
3108 int_to_str(s->lport, port_name), NULL);
3109 sock_addr_print(s->peer_name ?: "*", " ",
3110 int_to_str(s->rport, port_name), NULL);
3111
3112 proc_ctx_print(s);
3113 }
3114
3115 static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
3116 void *arg)
3117 {
3118 struct filter *f = (struct filter *)arg;
3119 struct unix_diag_msg *r = NLMSG_DATA(nlh);
3120 struct rtattr *tb[UNIX_DIAG_MAX+1];
3121 char name[128];
3122 struct sockstat stat = { .name = "*", .peer_name = "*" };
3123
3124 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
3125 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3126
3127 stat.type = r->udiag_type;
3128 stat.state = r->udiag_state;
3129 stat.ino = stat.lport = r->udiag_ino;
3130 stat.local.family = stat.remote.family = AF_UNIX;
3131
3132 if (unix_type_skip(&stat, f))
3133 return 0;
3134
3135 if (tb[UNIX_DIAG_RQLEN]) {
3136 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
3137
3138 stat.rq = rql->udiag_rqueue;
3139 stat.wq = rql->udiag_wqueue;
3140 }
3141 if (tb[UNIX_DIAG_NAME]) {
3142 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
3143
3144 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
3145 name[len] = '\0';
3146 if (name[0] == '\0') {
3147 int i;
3148 for (i = 0; i < len; i++)
3149 if (name[i] == '\0')
3150 name[i] = '@';
3151 }
3152 stat.name = &name[0];
3153 memcpy(stat.local.data, &stat.name, sizeof(stat.name));
3154 }
3155 if (tb[UNIX_DIAG_PEER])
3156 stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
3157
3158 if (f->f && run_ssfilter(f->f, &stat) == 0)
3159 return 0;
3160
3161 unix_stats_print(&stat, f);
3162
3163 if (show_mem)
3164 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
3165 if (show_details) {
3166 if (tb[UNIX_DIAG_SHUTDOWN]) {
3167 unsigned char mask;
3168
3169 mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]);
3170 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3171 }
3172 }
3173 printf("\n");
3174
3175 return 0;
3176 }
3177
3178 static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
3179 size_t size, rtnl_filter_t show_one_sock)
3180 {
3181 int ret = -1;
3182 struct rtnl_handle rth;
3183
3184 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3185 return -1;
3186
3187 rth.dump = MAGIC_SEQ;
3188
3189 if (rtnl_send(&rth, req, size) < 0)
3190 goto Exit;
3191
3192 if (rtnl_dump_filter(&rth, show_one_sock, f))
3193 goto Exit;
3194
3195 ret = 0;
3196 Exit:
3197 rtnl_close(&rth);
3198 return ret;
3199 }
3200
3201 static int unix_show_netlink(struct filter *f)
3202 {
3203 DIAG_REQUEST(req, struct unix_diag_req r);
3204
3205 req.r.sdiag_family = AF_UNIX;
3206 req.r.udiag_states = f->states;
3207 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
3208 if (show_mem)
3209 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
3210
3211 return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
3212 }
3213
3214 static int unix_show(struct filter *f)
3215 {
3216 FILE *fp;
3217 char buf[256];
3218 char name[128];
3219 int newformat = 0;
3220 int cnt;
3221 struct sockstat *list = NULL;
3222 const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
3223 SS_ESTABLISHED, SS_CLOSING };
3224
3225 if (!filter_af_get(f, AF_UNIX))
3226 return 0;
3227
3228 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
3229 && unix_show_netlink(f) == 0)
3230 return 0;
3231
3232 if ((fp = net_unix_open()) == NULL)
3233 return -1;
3234 if (!fgets(buf, sizeof(buf), fp)) {
3235 fclose(fp);
3236 return -1;
3237 }
3238
3239 if (memcmp(buf, "Peer", 4) == 0)
3240 newformat = 1;
3241 cnt = 0;
3242
3243 while (fgets(buf, sizeof(buf), fp)) {
3244 struct sockstat *u, **insp;
3245 int flags;
3246
3247 if (!(u = calloc(1, sizeof(*u))))
3248 break;
3249
3250 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
3251 &u->rport, &u->rq, &u->wq, &flags, &u->type,
3252 &u->state, &u->ino, name) < 8)
3253 name[0] = 0;
3254
3255 u->lport = u->ino;
3256 u->local.family = u->remote.family = AF_UNIX;
3257
3258 if (flags & (1 << 16)) {
3259 u->state = SS_LISTEN;
3260 } else if (u->state > 0 &&
3261 u->state <= ARRAY_SIZE(unix_state_map)) {
3262 u->state = unix_state_map[u->state-1];
3263 if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
3264 u->state = SS_ESTABLISHED;
3265 }
3266 if (unix_type_skip(u, f) ||
3267 !(f->states & (1 << u->state))) {
3268 free(u);
3269 continue;
3270 }
3271
3272 if (!newformat) {
3273 u->rport = 0;
3274 u->rq = 0;
3275 u->wq = 0;
3276 }
3277
3278 if (name[0]) {
3279 u->name = strdup(name);
3280 if (!u->name) {
3281 free(u);
3282 break;
3283 }
3284 }
3285
3286 if (u->rport) {
3287 struct sockstat *p;
3288
3289 for (p = list; p; p = p->next) {
3290 if (u->rport == p->lport)
3291 break;
3292 }
3293 if (!p)
3294 u->peer_name = "?";
3295 else
3296 u->peer_name = p->name ? : "*";
3297 }
3298
3299 if (f->f) {
3300 struct sockstat st = {
3301 .local.family = AF_UNIX,
3302 .remote.family = AF_UNIX,
3303 };
3304
3305 memcpy(st.local.data, &u->name, sizeof(u->name));
3306 if (strcmp(u->peer_name, "*"))
3307 memcpy(st.remote.data, &u->peer_name,
3308 sizeof(u->peer_name));
3309 if (run_ssfilter(f->f, &st) == 0) {
3310 free(u->name);
3311 free(u);
3312 continue;
3313 }
3314 }
3315
3316 insp = &list;
3317 while (*insp) {
3318 if (u->type < (*insp)->type ||
3319 (u->type == (*insp)->type &&
3320 u->ino < (*insp)->ino))
3321 break;
3322 insp = &(*insp)->next;
3323 }
3324 u->next = *insp;
3325 *insp = u;
3326
3327 if (++cnt > MAX_UNIX_REMEMBER) {
3328 while (list) {
3329 unix_stats_print(list, f);
3330 printf("\n");
3331
3332 unix_list_drop_first(&list);
3333 }
3334 cnt = 0;
3335 }
3336 }
3337 fclose(fp);
3338 while (list) {
3339 unix_stats_print(list, f);
3340 printf("\n");
3341
3342 unix_list_drop_first(&list);
3343 }
3344
3345 return 0;
3346 }
3347
3348 static int packet_stats_print(struct sockstat *s, const struct filter *f)
3349 {
3350 const char *addr, *port;
3351 char ll_name[16];
3352
3353 s->local.family = s->remote.family = AF_PACKET;
3354
3355 if (f->f) {
3356 s->local.data[0] = s->prot;
3357 if (run_ssfilter(f->f, s) == 0)
3358 return 1;
3359 }
3360
3361 sock_state_print(s);
3362
3363 if (s->prot == 3)
3364 addr = "*";
3365 else
3366 addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
3367
3368 if (s->iface == 0)
3369 port = "*";
3370 else
3371 port = xll_index_to_name(s->iface);
3372
3373 sock_addr_print(addr, ":", port, NULL);
3374 sock_addr_print("", "*", "", NULL);
3375
3376 proc_ctx_print(s);
3377
3378 if (show_details)
3379 sock_details_print(s);
3380
3381 return 0;
3382 }
3383
3384 static void packet_show_ring(struct packet_diag_ring *ring)
3385 {
3386 printf("blk_size:%d", ring->pdr_block_size);
3387 printf(",blk_nr:%d", ring->pdr_block_nr);
3388 printf(",frm_size:%d", ring->pdr_frame_size);
3389 printf(",frm_nr:%d", ring->pdr_frame_nr);
3390 printf(",tmo:%d", ring->pdr_retire_tmo);
3391 printf(",features:0x%x", ring->pdr_features);
3392 }
3393
3394 static int packet_show_sock(const struct sockaddr_nl *addr,
3395 struct nlmsghdr *nlh, void *arg)
3396 {
3397 const struct filter *f = arg;
3398 struct packet_diag_msg *r = NLMSG_DATA(nlh);
3399 struct packet_diag_info *pinfo = NULL;
3400 struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
3401 struct rtattr *tb[PACKET_DIAG_MAX+1];
3402 struct sockstat stat = {};
3403 uint32_t fanout = 0;
3404 bool has_fanout = false;
3405
3406 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
3407 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3408
3409 /* use /proc/net/packet if all info are not available */
3410 if (!tb[PACKET_DIAG_MEMINFO])
3411 return -1;
3412
3413 stat.type = r->pdiag_type;
3414 stat.prot = r->pdiag_num;
3415 stat.ino = r->pdiag_ino;
3416 stat.state = SS_CLOSE;
3417 stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
3418
3419 if (tb[PACKET_DIAG_MEMINFO]) {
3420 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
3421
3422 stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3423 }
3424
3425 if (tb[PACKET_DIAG_INFO]) {
3426 pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
3427 stat.lport = stat.iface = pinfo->pdi_index;
3428 }
3429
3430 if (tb[PACKET_DIAG_UID])
3431 stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]);
3432
3433 if (tb[PACKET_DIAG_RX_RING])
3434 ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
3435
3436 if (tb[PACKET_DIAG_TX_RING])
3437 ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
3438
3439 if (tb[PACKET_DIAG_FANOUT]) {
3440 has_fanout = true;
3441 fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]);
3442 }
3443
3444 if (packet_stats_print(&stat, f))
3445 return 0;
3446
3447 if (show_details) {
3448 if (pinfo) {
3449 printf("\n\tver:%d", pinfo->pdi_version);
3450 printf(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
3451 printf(" flags( ");
3452 if (pinfo->pdi_flags & PDI_RUNNING)
3453 printf("running");
3454 if (pinfo->pdi_flags & PDI_AUXDATA)
3455 printf(" auxdata");
3456 if (pinfo->pdi_flags & PDI_ORIGDEV)
3457 printf(" origdev");
3458 if (pinfo->pdi_flags & PDI_VNETHDR)
3459 printf(" vnethdr");
3460 if (pinfo->pdi_flags & PDI_LOSS)
3461 printf(" loss");
3462 if (!pinfo->pdi_flags)
3463 printf("0");
3464 printf(" )");
3465 }
3466 if (ring_rx) {
3467 printf("\n\tring_rx(");
3468 packet_show_ring(ring_rx);
3469 printf(")");
3470 }
3471 if (ring_tx) {
3472 printf("\n\tring_tx(");
3473 packet_show_ring(ring_tx);
3474 printf(")");
3475 }
3476 if (has_fanout) {
3477 uint16_t type = (fanout >> 16) & 0xffff;
3478
3479 printf("\n\tfanout(");
3480 printf("id:%d,", fanout & 0xffff);
3481 printf("type:");
3482
3483 if (type == 0)
3484 printf("hash");
3485 else if (type == 1)
3486 printf("lb");
3487 else if (type == 2)
3488 printf("cpu");
3489 else if (type == 3)
3490 printf("roll");
3491 else if (type == 4)
3492 printf("random");
3493 else if (type == 5)
3494 printf("qm");
3495 else
3496 printf("0x%x", type);
3497
3498 printf(")");
3499 }
3500 }
3501
3502 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
3503 struct sock_filter *fil =
3504 RTA_DATA(tb[PACKET_DIAG_FILTER]);
3505 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
3506 sizeof(struct sock_filter);
3507
3508 printf("\n\tbpf filter (%d): ", num);
3509 while (num) {
3510 printf(" 0x%02x %u %u %u,",
3511 fil->code, fil->jt, fil->jf, fil->k);
3512 num--;
3513 fil++;
3514 }
3515 }
3516 printf("\n");
3517 return 0;
3518 }
3519
3520 static int packet_show_netlink(struct filter *f)
3521 {
3522 DIAG_REQUEST(req, struct packet_diag_req r);
3523
3524 req.r.sdiag_family = AF_PACKET;
3525 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
3526 PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
3527
3528 return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
3529 }
3530
3531 static int packet_show_line(char *buf, const struct filter *f, int fam)
3532 {
3533 unsigned long long sk;
3534 struct sockstat stat = {};
3535 int type, prot, iface, state, rq, uid, ino;
3536
3537 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
3538 &sk,
3539 &type, &prot, &iface, &state,
3540 &rq, &uid, &ino);
3541
3542 if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
3543 return 0;
3544 if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
3545 return 0;
3546
3547 stat.type = type;
3548 stat.prot = prot;
3549 stat.lport = stat.iface = iface;
3550 stat.state = state;
3551 stat.rq = rq;
3552 stat.uid = uid;
3553 stat.ino = ino;
3554 stat.state = SS_CLOSE;
3555
3556 if (packet_stats_print(&stat, f))
3557 return 0;
3558
3559 printf("\n");
3560 return 0;
3561 }
3562
3563 static int packet_show(struct filter *f)
3564 {
3565 FILE *fp;
3566 int rc = 0;
3567
3568 if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
3569 return 0;
3570
3571 if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
3572 packet_show_netlink(f) == 0)
3573 return 0;
3574
3575 if ((fp = net_packet_open()) == NULL)
3576 return -1;
3577 if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
3578 rc = -1;
3579
3580 fclose(fp);
3581 return rc;
3582 }
3583
3584 static int netlink_show_one(struct filter *f,
3585 int prot, int pid, unsigned int groups,
3586 int state, int dst_pid, unsigned int dst_group,
3587 int rq, int wq,
3588 unsigned long long sk, unsigned long long cb)
3589 {
3590 struct sockstat st = {
3591 .state = SS_CLOSE,
3592 .rq = rq,
3593 .wq = wq,
3594 .local.family = AF_NETLINK,
3595 .remote.family = AF_NETLINK,
3596 };
3597
3598 SPRINT_BUF(prot_buf) = {};
3599 const char *prot_name;
3600 char procname[64] = {};
3601
3602 if (f->f) {
3603 st.rport = -1;
3604 st.lport = pid;
3605 st.local.data[0] = prot;
3606 if (run_ssfilter(f->f, &st) == 0)
3607 return 1;
3608 }
3609
3610 sock_state_print(&st);
3611
3612 if (resolve_services)
3613 prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
3614 else
3615 prot_name = int_to_str(prot, prot_buf);
3616
3617 if (pid == -1) {
3618 procname[0] = '*';
3619 } else if (resolve_services) {
3620 int done = 0;
3621
3622 if (!pid) {
3623 done = 1;
3624 strncpy(procname, "kernel", 6);
3625 } else if (pid > 0) {
3626 FILE *fp;
3627
3628 snprintf(procname, sizeof(procname), "%s/%d/stat",
3629 getenv("PROC_ROOT") ? : "/proc", pid);
3630 if ((fp = fopen(procname, "r")) != NULL) {
3631 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
3632 snprintf(procname+strlen(procname),
3633 sizeof(procname)-strlen(procname),
3634 "/%d", pid);
3635 done = 1;
3636 }
3637 fclose(fp);
3638 }
3639 }
3640 if (!done)
3641 int_to_str(pid, procname);
3642 } else {
3643 int_to_str(pid, procname);
3644 }
3645
3646 sock_addr_print(prot_name, ":", procname, NULL);
3647
3648 if (state == NETLINK_CONNECTED) {
3649 char dst_group_buf[30];
3650 char dst_pid_buf[30];
3651
3652 sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
3653 int_to_str(dst_pid, dst_pid_buf), NULL);
3654 } else {
3655 sock_addr_print("", "*", "", NULL);
3656 }
3657
3658 char *pid_context = NULL;
3659
3660 if (show_proc_ctx) {
3661 /* The pid value will either be:
3662 * 0 if destination kernel - show kernel initial context.
3663 * A valid process pid - use getpidcon.
3664 * A unique value allocated by the kernel or netlink user
3665 * to the process - show context as "not available".
3666 */
3667 if (!pid)
3668 security_get_initial_context("kernel", &pid_context);
3669 else if (pid > 0)
3670 getpidcon(pid, &pid_context);
3671
3672 if (pid_context != NULL) {
3673 printf("proc_ctx=%-*s ", serv_width, pid_context);
3674 free(pid_context);
3675 } else {
3676 printf("proc_ctx=%-*s ", serv_width, "unavailable");
3677 }
3678 }
3679
3680 if (show_details) {
3681 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
3682 }
3683 printf("\n");
3684
3685 return 0;
3686 }
3687
3688 static int netlink_show_sock(const struct sockaddr_nl *addr,
3689 struct nlmsghdr *nlh, void *arg)
3690 {
3691 struct filter *f = (struct filter *)arg;
3692 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
3693 struct rtattr *tb[NETLINK_DIAG_MAX+1];
3694 int rq = 0, wq = 0;
3695 unsigned long groups = 0;
3696
3697 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
3698 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3699
3700 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
3701 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
3702
3703 if (tb[NETLINK_DIAG_MEMINFO]) {
3704 const __u32 *skmeminfo;
3705
3706 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
3707
3708 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3709 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
3710 }
3711
3712 if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
3713 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
3714 rq, wq, 0, 0)) {
3715 return 0;
3716 }
3717
3718 if (show_mem) {
3719 printf("\t");
3720 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
3721 printf("\n");
3722 }
3723
3724 return 0;
3725 }
3726
3727 static int netlink_show_netlink(struct filter *f)
3728 {
3729 DIAG_REQUEST(req, struct netlink_diag_req r);
3730
3731 req.r.sdiag_family = AF_NETLINK;
3732 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
3733 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
3734
3735 return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
3736 }
3737
3738 static int netlink_show(struct filter *f)
3739 {
3740 FILE *fp;
3741 char buf[256];
3742 int prot, pid;
3743 unsigned int groups;
3744 int rq, wq, rc;
3745 unsigned long long sk, cb;
3746
3747 if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
3748 return 0;
3749
3750 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
3751 netlink_show_netlink(f) == 0)
3752 return 0;
3753
3754 if ((fp = net_netlink_open()) == NULL)
3755 return -1;
3756 if (!fgets(buf, sizeof(buf), fp)) {
3757 fclose(fp);
3758 return -1;
3759 }
3760
3761 while (fgets(buf, sizeof(buf), fp)) {
3762 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
3763 &sk,
3764 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
3765
3766 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
3767 }
3768
3769 fclose(fp);
3770 return 0;
3771 }
3772
3773 static bool vsock_type_skip(struct sockstat *s, struct filter *f)
3774 {
3775 if (s->type == SOCK_STREAM && !(f->dbs & (1 << VSOCK_ST_DB)))
3776 return true;
3777 if (s->type == SOCK_DGRAM && !(f->dbs & (1 << VSOCK_DG_DB)))
3778 return true;
3779 return false;
3780 }
3781
3782 static void vsock_addr_print(inet_prefix *a, __u32 port)
3783 {
3784 char cid_str[sizeof("4294967295")];
3785 char port_str[sizeof("4294967295")];
3786 __u32 cid;
3787
3788 memcpy(&cid, a->data, sizeof(cid));
3789
3790 if (cid == ~(__u32)0)
3791 snprintf(cid_str, sizeof(cid_str), "*");
3792 else
3793 snprintf(cid_str, sizeof(cid_str), "%u", cid);
3794
3795 if (port == ~(__u32)0)
3796 snprintf(port_str, sizeof(port_str), "*");
3797 else
3798 snprintf(port_str, sizeof(port_str), "%u", port);
3799
3800 sock_addr_print(cid_str, ":", port_str, NULL);
3801 }
3802
3803 static void vsock_stats_print(struct sockstat *s, struct filter *f)
3804 {
3805 sock_state_print(s);
3806
3807 vsock_addr_print(&s->local, s->lport);
3808 vsock_addr_print(&s->remote, s->rport);
3809
3810 proc_ctx_print(s);
3811
3812 printf("\n");
3813 }
3814
3815 static int vsock_show_sock(const struct sockaddr_nl *addr,
3816 struct nlmsghdr *nlh, void *arg)
3817 {
3818 struct filter *f = (struct filter *)arg;
3819 struct vsock_diag_msg *r = NLMSG_DATA(nlh);
3820 struct sockstat stat = {
3821 .type = r->vdiag_type,
3822 .lport = r->vdiag_src_port,
3823 .rport = r->vdiag_dst_port,
3824 .state = r->vdiag_state,
3825 .ino = r->vdiag_ino,
3826 };
3827
3828 vsock_set_inet_prefix(&stat.local, r->vdiag_src_cid);
3829 vsock_set_inet_prefix(&stat.remote, r->vdiag_dst_cid);
3830
3831 if (vsock_type_skip(&stat, f))
3832 return 0;
3833
3834 if (f->f && run_ssfilter(f->f, &stat) == 0)
3835 return 0;
3836
3837 vsock_stats_print(&stat, f);
3838
3839 return 0;
3840 }
3841
3842 static int vsock_show(struct filter *f)
3843 {
3844 DIAG_REQUEST(req, struct vsock_diag_req r);
3845
3846 if (!filter_af_get(f, AF_VSOCK))
3847 return 0;
3848
3849 req.r.sdiag_family = AF_VSOCK;
3850 req.r.vdiag_states = f->states;
3851
3852 return handle_netlink_request(f, &req.nlh, sizeof(req), vsock_show_sock);
3853 }
3854
3855 struct sock_diag_msg {
3856 __u8 sdiag_family;
3857 };
3858
3859 static int generic_show_sock(const struct sockaddr_nl *addr,
3860 struct nlmsghdr *nlh, void *arg)
3861 {
3862 struct sock_diag_msg *r = NLMSG_DATA(nlh);
3863 struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
3864
3865 switch (r->sdiag_family) {
3866 case AF_INET:
3867 case AF_INET6:
3868 return show_one_inet_sock(addr, nlh, &inet_arg);
3869 case AF_UNIX:
3870 return unix_show_sock(addr, nlh, arg);
3871 case AF_PACKET:
3872 return packet_show_sock(addr, nlh, arg);
3873 case AF_NETLINK:
3874 return netlink_show_sock(addr, nlh, arg);
3875 case AF_VSOCK:
3876 return vsock_show_sock(addr, nlh, arg);
3877 default:
3878 return -1;
3879 }
3880 }
3881
3882 static int handle_follow_request(struct filter *f)
3883 {
3884 int ret = 0;
3885 int groups = 0;
3886 struct rtnl_handle rth;
3887
3888 if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << TCP_DB))
3889 groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
3890 if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << UDP_DB))
3891 groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
3892 if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << TCP_DB))
3893 groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
3894 if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << UDP_DB))
3895 groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
3896
3897 if (groups == 0)
3898 return -1;
3899
3900 if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
3901 return -1;
3902
3903 rth.dump = 0;
3904 rth.local.nl_pid = 0;
3905
3906 if (rtnl_dump_filter(&rth, generic_show_sock, f))
3907 ret = -1;
3908
3909 rtnl_close(&rth);
3910 return ret;
3911 }
3912
3913 static int get_snmp_int(char *proto, char *key, int *result)
3914 {
3915 char buf[1024];
3916 FILE *fp;
3917 int protolen = strlen(proto);
3918 int keylen = strlen(key);
3919
3920 *result = 0;
3921
3922 if ((fp = net_snmp_open()) == NULL)
3923 return -1;
3924
3925 while (fgets(buf, sizeof(buf), fp) != NULL) {
3926 char *p = buf;
3927 int pos = 0;
3928
3929 if (memcmp(buf, proto, protolen))
3930 continue;
3931 while ((p = strchr(p, ' ')) != NULL) {
3932 pos++;
3933 p++;
3934 if (memcmp(p, key, keylen) == 0 &&
3935 (p[keylen] == ' ' || p[keylen] == '\n'))
3936 break;
3937 }
3938 if (fgets(buf, sizeof(buf), fp) == NULL)
3939 break;
3940 if (memcmp(buf, proto, protolen))
3941 break;
3942 p = buf;
3943 while ((p = strchr(p, ' ')) != NULL) {
3944 p++;
3945 if (--pos == 0) {
3946 sscanf(p, "%d", result);
3947 fclose(fp);
3948 return 0;
3949 }
3950 }
3951 }
3952
3953 fclose(fp);
3954 errno = ESRCH;
3955 return -1;
3956 }
3957
3958
3959 /* Get stats from sockstat */
3960
3961 struct ssummary {
3962 int socks;
3963 int tcp_mem;
3964 int tcp_total;
3965 int tcp_orphans;
3966 int tcp_tws;
3967 int tcp4_hashed;
3968 int udp4;
3969 int raw4;
3970 int frag4;
3971 int frag4_mem;
3972 int tcp6_hashed;
3973 int udp6;
3974 int raw6;
3975 int frag6;
3976 int frag6_mem;
3977 };
3978
3979 static void get_sockstat_line(char *line, struct ssummary *s)
3980 {
3981 char id[256], rem[256];
3982
3983 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
3984 return;
3985
3986 if (strcmp(id, "sockets:") == 0)
3987 sscanf(rem, "%*s%d", &s->socks);
3988 else if (strcmp(id, "UDP:") == 0)
3989 sscanf(rem, "%*s%d", &s->udp4);
3990 else if (strcmp(id, "UDP6:") == 0)
3991 sscanf(rem, "%*s%d", &s->udp6);
3992 else if (strcmp(id, "RAW:") == 0)
3993 sscanf(rem, "%*s%d", &s->raw4);
3994 else if (strcmp(id, "RAW6:") == 0)
3995 sscanf(rem, "%*s%d", &s->raw6);
3996 else if (strcmp(id, "TCP6:") == 0)
3997 sscanf(rem, "%*s%d", &s->tcp6_hashed);
3998 else if (strcmp(id, "FRAG:") == 0)
3999 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
4000 else if (strcmp(id, "FRAG6:") == 0)
4001 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
4002 else if (strcmp(id, "TCP:") == 0)
4003 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
4004 &s->tcp4_hashed,
4005 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
4006 }
4007
4008 static int get_sockstat(struct ssummary *s)
4009 {
4010 char buf[256];
4011 FILE *fp;
4012
4013 memset(s, 0, sizeof(*s));
4014
4015 if ((fp = net_sockstat_open()) == NULL)
4016 return -1;
4017 while (fgets(buf, sizeof(buf), fp) != NULL)
4018 get_sockstat_line(buf, s);
4019 fclose(fp);
4020
4021 if ((fp = net_sockstat6_open()) == NULL)
4022 return 0;
4023 while (fgets(buf, sizeof(buf), fp) != NULL)
4024 get_sockstat_line(buf, s);
4025 fclose(fp);
4026
4027 return 0;
4028 }
4029
4030 static int print_summary(void)
4031 {
4032 struct ssummary s;
4033 int tcp_estab;
4034
4035 if (get_sockstat(&s) < 0)
4036 perror("ss: get_sockstat");
4037 if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0)
4038 perror("ss: get_snmpstat");
4039
4040 get_slabstat(&slabstat);
4041
4042 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
4043
4044 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
4045 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
4046 tcp_estab,
4047 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
4048 s.tcp_orphans,
4049 slabstat.tcp_syns,
4050 s.tcp_tws, slabstat.tcp_tws,
4051 slabstat.tcp_ports
4052 );
4053
4054 printf("\n");
4055 printf("Transport Total IP IPv6\n");
4056 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
4057 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
4058 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
4059 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
4060 printf("INET %-9d %-9d %-9d\n",
4061 s.raw4+s.udp4+s.tcp4_hashed+
4062 s.raw6+s.udp6+s.tcp6_hashed,
4063 s.raw4+s.udp4+s.tcp4_hashed,
4064 s.raw6+s.udp6+s.tcp6_hashed);
4065 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
4066
4067 printf("\n");
4068
4069 return 0;
4070 }
4071
4072 static void _usage(FILE *dest)
4073 {
4074 fprintf(dest,
4075 "Usage: ss [ OPTIONS ]\n"
4076 " ss [ OPTIONS ] [ FILTER ]\n"
4077 " -h, --help this message\n"
4078 " -V, --version output version information\n"
4079 " -n, --numeric don't resolve service names\n"
4080 " -r, --resolve resolve host names\n"
4081 " -a, --all display all sockets\n"
4082 " -l, --listening display listening sockets\n"
4083 " -o, --options show timer information\n"
4084 " -e, --extended show detailed socket information\n"
4085 " -m, --memory show socket memory usage\n"
4086 " -p, --processes show process using socket\n"
4087 " -i, --info show internal TCP information\n"
4088 " -s, --summary show socket usage summary\n"
4089 " -b, --bpf show bpf filter socket information\n"
4090 " -E, --events continually display sockets as they are destroyed\n"
4091 " -Z, --context display process SELinux security contexts\n"
4092 " -z, --contexts display process and socket SELinux security contexts\n"
4093 " -N, --net switch to the specified network namespace name\n"
4094 "\n"
4095 " -4, --ipv4 display only IP version 4 sockets\n"
4096 " -6, --ipv6 display only IP version 6 sockets\n"
4097 " -0, --packet display PACKET sockets\n"
4098 " -t, --tcp display only TCP sockets\n"
4099 " -S, --sctp display only SCTP sockets\n"
4100 " -u, --udp display only UDP sockets\n"
4101 " -d, --dccp display only DCCP sockets\n"
4102 " -w, --raw display only RAW sockets\n"
4103 " -x, --unix display only Unix domain sockets\n"
4104 " --vsock display only vsock sockets\n"
4105 " -f, --family=FAMILY display sockets of type FAMILY\n"
4106 " FAMILY := {inet|inet6|link|unix|netlink|vsock|help}\n"
4107 "\n"
4108 " -K, --kill forcibly close sockets, display what was closed\n"
4109 " -H, --no-header Suppress header line\n"
4110 "\n"
4111 " -A, --query=QUERY, --socket=QUERY\n"
4112 " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink|vsock_stream|vsock_dgram}[,QUERY]\n"
4113 "\n"
4114 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
4115 " -F, --filter=FILE read filter information from FILE\n"
4116 " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
4117 " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
4118 " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n"
4119 " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
4120 " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
4121 " bucket := {syn-recv|time-wait}\n"
4122 " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n"
4123 );
4124 }
4125
4126 static void help(void) __attribute__((noreturn));
4127 static void help(void)
4128 {
4129 _usage(stdout);
4130 exit(0);
4131 }
4132
4133 static void usage(void) __attribute__((noreturn));
4134 static void usage(void)
4135 {
4136 _usage(stderr);
4137 exit(-1);
4138 }
4139
4140
4141 static int scan_state(const char *state)
4142 {
4143 static const char * const sstate_namel[] = {
4144 "UNKNOWN",
4145 [SS_ESTABLISHED] = "established",
4146 [SS_SYN_SENT] = "syn-sent",
4147 [SS_SYN_RECV] = "syn-recv",
4148 [SS_FIN_WAIT1] = "fin-wait-1",
4149 [SS_FIN_WAIT2] = "fin-wait-2",
4150 [SS_TIME_WAIT] = "time-wait",
4151 [SS_CLOSE] = "unconnected",
4152 [SS_CLOSE_WAIT] = "close-wait",
4153 [SS_LAST_ACK] = "last-ack",
4154 [SS_LISTEN] = "listening",
4155 [SS_CLOSING] = "closing",
4156 };
4157 int i;
4158
4159 if (strcasecmp(state, "close") == 0 ||
4160 strcasecmp(state, "closed") == 0)
4161 return (1<<SS_CLOSE);
4162 if (strcasecmp(state, "syn-rcv") == 0)
4163 return (1<<SS_SYN_RECV);
4164 if (strcasecmp(state, "established") == 0)
4165 return (1<<SS_ESTABLISHED);
4166 if (strcasecmp(state, "all") == 0)
4167 return SS_ALL;
4168 if (strcasecmp(state, "connected") == 0)
4169 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
4170 if (strcasecmp(state, "synchronized") == 0)
4171 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
4172 if (strcasecmp(state, "bucket") == 0)
4173 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
4174 if (strcasecmp(state, "big") == 0)
4175 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
4176 for (i = 0; i < SS_MAX; i++) {
4177 if (strcasecmp(state, sstate_namel[i]) == 0)
4178 return (1<<i);
4179 }
4180
4181 fprintf(stderr, "ss: wrong state name: %s\n", state);
4182 exit(-1);
4183 }
4184
4185 /* Values 'v' and 'V' are already used so a non-character is used */
4186 #define OPT_VSOCK 256
4187
4188 static const struct option long_opts[] = {
4189 { "numeric", 0, 0, 'n' },
4190 { "resolve", 0, 0, 'r' },
4191 { "options", 0, 0, 'o' },
4192 { "extended", 0, 0, 'e' },
4193 { "memory", 0, 0, 'm' },
4194 { "info", 0, 0, 'i' },
4195 { "processes", 0, 0, 'p' },
4196 { "bpf", 0, 0, 'b' },
4197 { "events", 0, 0, 'E' },
4198 { "dccp", 0, 0, 'd' },
4199 { "tcp", 0, 0, 't' },
4200 { "sctp", 0, 0, 'S' },
4201 { "udp", 0, 0, 'u' },
4202 { "raw", 0, 0, 'w' },
4203 { "unix", 0, 0, 'x' },
4204 { "vsock", 0, 0, OPT_VSOCK },
4205 { "all", 0, 0, 'a' },
4206 { "listening", 0, 0, 'l' },
4207 { "ipv4", 0, 0, '4' },
4208 { "ipv6", 0, 0, '6' },
4209 { "packet", 0, 0, '0' },
4210 { "family", 1, 0, 'f' },
4211 { "socket", 1, 0, 'A' },
4212 { "query", 1, 0, 'A' },
4213 { "summary", 0, 0, 's' },
4214 { "diag", 1, 0, 'D' },
4215 { "filter", 1, 0, 'F' },
4216 { "version", 0, 0, 'V' },
4217 { "help", 0, 0, 'h' },
4218 { "context", 0, 0, 'Z' },
4219 { "contexts", 0, 0, 'z' },
4220 { "net", 1, 0, 'N' },
4221 { "kill", 0, 0, 'K' },
4222 { "no-header", 0, 0, 'H' },
4223 { 0 }
4224
4225 };
4226
4227 int main(int argc, char *argv[])
4228 {
4229 int saw_states = 0;
4230 int saw_query = 0;
4231 int do_summary = 0;
4232 const char *dump_tcpdiag = NULL;
4233 FILE *filter_fp = NULL;
4234 int ch;
4235 int state_filter = 0;
4236 int addrp_width, screen_width = 80;
4237
4238 while ((ch = getopt_long(argc, argv,
4239 "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
4240 long_opts, NULL)) != EOF) {
4241 switch (ch) {
4242 case 'n':
4243 resolve_services = 0;
4244 break;
4245 case 'r':
4246 resolve_hosts = 1;
4247 break;
4248 case 'o':
4249 show_options = 1;
4250 break;
4251 case 'e':
4252 show_options = 1;
4253 show_details++;
4254 break;
4255 case 'm':
4256 show_mem = 1;
4257 break;
4258 case 'i':
4259 show_tcpinfo = 1;
4260 break;
4261 case 'p':
4262 show_users++;
4263 user_ent_hash_build();
4264 break;
4265 case 'b':
4266 show_options = 1;
4267 show_bpf++;
4268 break;
4269 case 'E':
4270 follow_events = 1;
4271 break;
4272 case 'd':
4273 filter_db_set(&current_filter, DCCP_DB);
4274 break;
4275 case 't':
4276 filter_db_set(&current_filter, TCP_DB);
4277 break;
4278 case 'S':
4279 filter_db_set(&current_filter, SCTP_DB);
4280 break;
4281 case 'u':
4282 filter_db_set(&current_filter, UDP_DB);
4283 break;
4284 case 'w':
4285 filter_db_set(&current_filter, RAW_DB);
4286 break;
4287 case 'x':
4288 filter_af_set(&current_filter, AF_UNIX);
4289 break;
4290 case OPT_VSOCK:
4291 filter_af_set(&current_filter, AF_VSOCK);
4292 break;
4293 case 'a':
4294 state_filter = SS_ALL;
4295 break;
4296 case 'l':
4297 state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
4298 break;
4299 case '4':
4300 filter_af_set(&current_filter, AF_INET);
4301 break;
4302 case '6':
4303 filter_af_set(&current_filter, AF_INET6);
4304 break;
4305 case '0':
4306 filter_af_set(&current_filter, AF_PACKET);
4307 break;
4308 case 'f':
4309 if (strcmp(optarg, "inet") == 0)
4310 filter_af_set(&current_filter, AF_INET);
4311 else if (strcmp(optarg, "inet6") == 0)
4312 filter_af_set(&current_filter, AF_INET6);
4313 else if (strcmp(optarg, "link") == 0)
4314 filter_af_set(&current_filter, AF_PACKET);
4315 else if (strcmp(optarg, "unix") == 0)
4316 filter_af_set(&current_filter, AF_UNIX);
4317 else if (strcmp(optarg, "netlink") == 0)
4318 filter_af_set(&current_filter, AF_NETLINK);
4319 else if (strcmp(optarg, "vsock") == 0)
4320 filter_af_set(&current_filter, AF_VSOCK);
4321 else if (strcmp(optarg, "help") == 0)
4322 help();
4323 else {
4324 fprintf(stderr, "ss: \"%s\" is invalid family\n",
4325 optarg);
4326 usage();
4327 }
4328 break;
4329 case 'A':
4330 {
4331 char *p, *p1;
4332
4333 if (!saw_query) {
4334 current_filter.dbs = 0;
4335 state_filter = state_filter ?
4336 state_filter : SS_CONN;
4337 saw_query = 1;
4338 do_default = 0;
4339 }
4340 p = p1 = optarg;
4341 do {
4342 if ((p1 = strchr(p, ',')) != NULL)
4343 *p1 = 0;
4344 if (strcmp(p, "all") == 0) {
4345 filter_default_dbs(&current_filter);
4346 } else if (strcmp(p, "inet") == 0) {
4347 filter_db_set(&current_filter, UDP_DB);
4348 filter_db_set(&current_filter, DCCP_DB);
4349 filter_db_set(&current_filter, TCP_DB);
4350 filter_db_set(&current_filter, SCTP_DB);
4351 filter_db_set(&current_filter, RAW_DB);
4352 } else if (strcmp(p, "udp") == 0) {
4353 filter_db_set(&current_filter, UDP_DB);
4354 } else if (strcmp(p, "dccp") == 0) {
4355 filter_db_set(&current_filter, DCCP_DB);
4356 } else if (strcmp(p, "tcp") == 0) {
4357 filter_db_set(&current_filter, TCP_DB);
4358 } else if (strcmp(p, "sctp") == 0) {
4359 filter_db_set(&current_filter, SCTP_DB);
4360 } else if (strcmp(p, "raw") == 0) {
4361 filter_db_set(&current_filter, RAW_DB);
4362 } else if (strcmp(p, "unix") == 0) {
4363 filter_db_set(&current_filter, UNIX_ST_DB);
4364 filter_db_set(&current_filter, UNIX_DG_DB);
4365 filter_db_set(&current_filter, UNIX_SQ_DB);
4366 } else if (strcasecmp(p, "unix_stream") == 0 ||
4367 strcmp(p, "u_str") == 0) {
4368 filter_db_set(&current_filter, UNIX_ST_DB);
4369 } else if (strcasecmp(p, "unix_dgram") == 0 ||
4370 strcmp(p, "u_dgr") == 0) {
4371 filter_db_set(&current_filter, UNIX_DG_DB);
4372 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
4373 strcmp(p, "u_seq") == 0) {
4374 filter_db_set(&current_filter, UNIX_SQ_DB);
4375 } else if (strcmp(p, "packet") == 0) {
4376 filter_db_set(&current_filter, PACKET_R_DB);
4377 filter_db_set(&current_filter, PACKET_DG_DB);
4378 } else if (strcmp(p, "packet_raw") == 0 ||
4379 strcmp(p, "p_raw") == 0) {
4380 filter_db_set(&current_filter, PACKET_R_DB);
4381 } else if (strcmp(p, "packet_dgram") == 0 ||
4382 strcmp(p, "p_dgr") == 0) {
4383 filter_db_set(&current_filter, PACKET_DG_DB);
4384 } else if (strcmp(p, "netlink") == 0) {
4385 filter_db_set(&current_filter, NETLINK_DB);
4386 } else if (strcmp(p, "vsock") == 0) {
4387 filter_db_set(&current_filter, VSOCK_ST_DB);
4388 filter_db_set(&current_filter, VSOCK_DG_DB);
4389 } else if (strcmp(p, "vsock_stream") == 0 ||
4390 strcmp(p, "v_str") == 0) {
4391 filter_db_set(&current_filter, VSOCK_ST_DB);
4392 } else if (strcmp(p, "vsock_dgram") == 0 ||
4393 strcmp(p, "v_dgr") == 0) {
4394 filter_db_set(&current_filter, VSOCK_DG_DB);
4395 } else {
4396 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
4397 usage();
4398 }
4399 p = p1 + 1;
4400 } while (p1);
4401 break;
4402 }
4403 case 's':
4404 do_summary = 1;
4405 break;
4406 case 'D':
4407 dump_tcpdiag = optarg;
4408 break;
4409 case 'F':
4410 if (filter_fp) {
4411 fprintf(stderr, "More than one filter file\n");
4412 exit(-1);
4413 }
4414 if (optarg[0] == '-')
4415 filter_fp = stdin;
4416 else
4417 filter_fp = fopen(optarg, "r");
4418 if (!filter_fp) {
4419 perror("fopen filter file");
4420 exit(-1);
4421 }
4422 break;
4423 case 'v':
4424 case 'V':
4425 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
4426 exit(0);
4427 case 'z':
4428 show_sock_ctx++;
4429 /* fall through */
4430 case 'Z':
4431 if (is_selinux_enabled() <= 0) {
4432 fprintf(stderr, "ss: SELinux is not enabled.\n");
4433 exit(1);
4434 }
4435 show_proc_ctx++;
4436 user_ent_hash_build();
4437 break;
4438 case 'N':
4439 if (netns_switch(optarg))
4440 exit(1);
4441 break;
4442 case 'K':
4443 current_filter.kill = 1;
4444 break;
4445 case 'H':
4446 show_header = 0;
4447 break;
4448 case 'h':
4449 help();
4450 case '?':
4451 default:
4452 usage();
4453 }
4454 }
4455
4456 argc -= optind;
4457 argv += optind;
4458
4459 if (do_summary) {
4460 print_summary();
4461 if (do_default && argc == 0)
4462 exit(0);
4463 }
4464
4465 while (argc > 0) {
4466 if (strcmp(*argv, "state") == 0) {
4467 NEXT_ARG();
4468 if (!saw_states)
4469 state_filter = 0;
4470 state_filter |= scan_state(*argv);
4471 saw_states = 1;
4472 } else if (strcmp(*argv, "exclude") == 0 ||
4473 strcmp(*argv, "excl") == 0) {
4474 NEXT_ARG();
4475 if (!saw_states)
4476 state_filter = SS_ALL;
4477 state_filter &= ~scan_state(*argv);
4478 saw_states = 1;
4479 } else {
4480 break;
4481 }
4482 argc--; argv++;
4483 }
4484
4485 if (do_default) {
4486 state_filter = state_filter ? state_filter : SS_CONN;
4487 filter_default_dbs(&current_filter);
4488 }
4489
4490 filter_states_set(&current_filter, state_filter);
4491 filter_merge_defaults(&current_filter);
4492
4493 if (resolve_services && resolve_hosts &&
4494 (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
4495 init_service_resolver();
4496
4497 if (current_filter.dbs == 0) {
4498 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
4499 exit(0);
4500 }
4501 if (current_filter.families == 0) {
4502 fprintf(stderr, "ss: no families to show with such filter.\n");
4503 exit(0);
4504 }
4505 if (current_filter.states == 0) {
4506 fprintf(stderr, "ss: no socket states to show with such filter.\n");
4507 exit(0);
4508 }
4509
4510 if (dump_tcpdiag) {
4511 FILE *dump_fp = stdout;
4512
4513 if (!(current_filter.dbs & (1<<TCP_DB))) {
4514 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
4515 exit(0);
4516 }
4517 if (dump_tcpdiag[0] != '-') {
4518 dump_fp = fopen(dump_tcpdiag, "w");
4519 if (!dump_tcpdiag) {
4520 perror("fopen dump file");
4521 exit(-1);
4522 }
4523 }
4524 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
4525 fflush(dump_fp);
4526 exit(0);
4527 }
4528
4529 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
4530 usage();
4531
4532 netid_width = 0;
4533 if (current_filter.dbs&(current_filter.dbs-1))
4534 netid_width = 5;
4535
4536 state_width = 0;
4537 if (current_filter.states&(current_filter.states-1))
4538 state_width = 10;
4539
4540 if (isatty(STDOUT_FILENO)) {
4541 struct winsize w;
4542
4543 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
4544 if (w.ws_col > 0)
4545 screen_width = w.ws_col;
4546 }
4547 }
4548
4549 addrp_width = screen_width;
4550 addrp_width -= netid_width+1;
4551 addrp_width -= state_width+1;
4552 addrp_width -= 14;
4553
4554 if (addrp_width&1) {
4555 if (netid_width)
4556 netid_width++;
4557 else if (state_width)
4558 state_width++;
4559 }
4560
4561 addrp_width /= 2;
4562 addrp_width--;
4563
4564 serv_width = resolve_services ? 7 : 5;
4565
4566 if (addrp_width < 15+serv_width+1)
4567 addrp_width = 15+serv_width+1;
4568
4569 addr_width = addrp_width - serv_width - 1;
4570
4571 if (show_header) {
4572 if (netid_width)
4573 printf("%-*s ", netid_width, "Netid");
4574 if (state_width)
4575 printf("%-*s ", state_width, "State");
4576 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
4577 }
4578
4579 /* Make enough space for the local/remote port field */
4580 addr_width -= 13;
4581 serv_width += 13;
4582
4583 if (show_header) {
4584 printf("%*s:%-*s %*s:%-*s\n",
4585 addr_width, "Local Address", serv_width, "Port",
4586 addr_width, "Peer Address", serv_width, "Port");
4587 }
4588
4589 fflush(stdout);
4590
4591 if (follow_events)
4592 exit(handle_follow_request(&current_filter));
4593
4594 if (current_filter.dbs & (1<<NETLINK_DB))
4595 netlink_show(&current_filter);
4596 if (current_filter.dbs & PACKET_DBM)
4597 packet_show(&current_filter);
4598 if (current_filter.dbs & UNIX_DBM)
4599 unix_show(&current_filter);
4600 if (current_filter.dbs & (1<<RAW_DB))
4601 raw_show(&current_filter);
4602 if (current_filter.dbs & (1<<UDP_DB))
4603 udp_show(&current_filter);
4604 if (current_filter.dbs & (1<<TCP_DB))
4605 tcp_show(&current_filter);
4606 if (current_filter.dbs & (1<<DCCP_DB))
4607 dccp_show(&current_filter);
4608 if (current_filter.dbs & (1<<SCTP_DB))
4609 sctp_show(&current_filter);
4610 if (current_filter.dbs & VSOCK_DBM)
4611 vsock_show(&current_filter);
4612
4613 if (show_users || show_proc_ctx || show_sock_ctx)
4614 user_ent_destroy();
4615
4616 return 0;
4617 }
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