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ss: Fix width calculations when Netid or State columns are missing
[mirror_iproute2.git] / misc / ss.c
1 /*
2 * ss.c "sockstat", socket statistics
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 */
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <unistd.h>
15 #include <syslog.h>
16 #include <fcntl.h>
17 #include <sys/ioctl.h>
18 #include <sys/socket.h>
19 #include <sys/uio.h>
20 #include <netinet/in.h>
21 #include <string.h>
22 #include <errno.h>
23 #include <netdb.h>
24 #include <arpa/inet.h>
25 #include <dirent.h>
26 #include <fnmatch.h>
27 #include <getopt.h>
28 #include <stdbool.h>
29 #include <limits.h>
30
31 #include "utils.h"
32 #include "rt_names.h"
33 #include "ll_map.h"
34 #include "libnetlink.h"
35 #include "namespace.h"
36 #include "SNAPSHOT.h"
37
38 #include <linux/tcp.h>
39 #include <linux/sock_diag.h>
40 #include <linux/inet_diag.h>
41 #include <linux/unix_diag.h>
42 #include <linux/netdevice.h> /* for MAX_ADDR_LEN */
43 #include <linux/filter.h>
44 #include <linux/packet_diag.h>
45 #include <linux/netlink_diag.h>
46 #include <linux/sctp.h>
47
48 #define MAGIC_SEQ 123456
49
50 #define DIAG_REQUEST(_req, _r) \
51 struct { \
52 struct nlmsghdr nlh; \
53 _r; \
54 } _req = { \
55 .nlh = { \
56 .nlmsg_type = SOCK_DIAG_BY_FAMILY, \
57 .nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
58 .nlmsg_seq = MAGIC_SEQ, \
59 .nlmsg_len = sizeof(_req), \
60 }, \
61 }
62
63 #if HAVE_SELINUX
64 #include <selinux/selinux.h>
65 #else
66 /* Stubs for SELinux functions */
67 static int is_selinux_enabled(void)
68 {
69 return -1;
70 }
71
72 static int getpidcon(pid_t pid, char **context)
73 {
74 *context = NULL;
75 return -1;
76 }
77
78 static int getfilecon(char *path, char **context)
79 {
80 *context = NULL;
81 return -1;
82 }
83
84 static int security_get_initial_context(char *name, char **context)
85 {
86 *context = NULL;
87 return -1;
88 }
89 #endif
90
91 int resolve_hosts;
92 int resolve_services = 1;
93 int preferred_family = AF_UNSPEC;
94 int show_options;
95 int show_details;
96 int show_users;
97 int show_mem;
98 int show_tcpinfo;
99 int show_bpf;
100 int show_proc_ctx;
101 int show_sock_ctx;
102 int show_header = 1;
103 int follow_events;
104 int sctp_ino;
105
106 int netid_width;
107 int state_width;
108 int addr_width;
109 int serv_width;
110 char *odd_width_pad = "";
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 MAX_DB
131 };
132
133 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
134 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
135 #define ALL_DB ((1<<MAX_DB)-1)
136 #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
137 #define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
138
139 enum {
140 SS_UNKNOWN,
141 SS_ESTABLISHED,
142 SS_SYN_SENT,
143 SS_SYN_RECV,
144 SS_FIN_WAIT1,
145 SS_FIN_WAIT2,
146 SS_TIME_WAIT,
147 SS_CLOSE,
148 SS_CLOSE_WAIT,
149 SS_LAST_ACK,
150 SS_LISTEN,
151 SS_CLOSING,
152 SS_MAX
153 };
154
155 enum {
156 SCTP_STATE_CLOSED = 0,
157 SCTP_STATE_COOKIE_WAIT = 1,
158 SCTP_STATE_COOKIE_ECHOED = 2,
159 SCTP_STATE_ESTABLISHED = 3,
160 SCTP_STATE_SHUTDOWN_PENDING = 4,
161 SCTP_STATE_SHUTDOWN_SENT = 5,
162 SCTP_STATE_SHUTDOWN_RECEIVED = 6,
163 SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
164 };
165
166 #define SS_ALL ((1 << SS_MAX) - 1)
167 #define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
168
169 #include "ssfilter.h"
170
171 struct filter {
172 int dbs;
173 int states;
174 int families;
175 struct ssfilter *f;
176 bool kill;
177 };
178
179 static const struct filter default_dbs[MAX_DB] = {
180 [TCP_DB] = {
181 .states = SS_CONN,
182 .families = (1 << AF_INET) | (1 << AF_INET6),
183 },
184 [DCCP_DB] = {
185 .states = SS_CONN,
186 .families = (1 << AF_INET) | (1 << AF_INET6),
187 },
188 [UDP_DB] = {
189 .states = (1 << SS_ESTABLISHED),
190 .families = (1 << AF_INET) | (1 << AF_INET6),
191 },
192 [RAW_DB] = {
193 .states = (1 << SS_ESTABLISHED),
194 .families = (1 << AF_INET) | (1 << AF_INET6),
195 },
196 [UNIX_DG_DB] = {
197 .states = (1 << SS_CLOSE),
198 .families = (1 << AF_UNIX),
199 },
200 [UNIX_ST_DB] = {
201 .states = SS_CONN,
202 .families = (1 << AF_UNIX),
203 },
204 [UNIX_SQ_DB] = {
205 .states = SS_CONN,
206 .families = (1 << AF_UNIX),
207 },
208 [PACKET_DG_DB] = {
209 .states = (1 << SS_CLOSE),
210 .families = (1 << AF_PACKET),
211 },
212 [PACKET_R_DB] = {
213 .states = (1 << SS_CLOSE),
214 .families = (1 << AF_PACKET),
215 },
216 [NETLINK_DB] = {
217 .states = (1 << SS_CLOSE),
218 .families = (1 << AF_NETLINK),
219 },
220 [SCTP_DB] = {
221 .states = SS_CONN,
222 .families = (1 << AF_INET) | (1 << AF_INET6),
223 },
224 };
225
226 static const struct filter default_afs[AF_MAX] = {
227 [AF_INET] = {
228 .dbs = INET_DBM,
229 .states = SS_CONN,
230 },
231 [AF_INET6] = {
232 .dbs = INET_DBM,
233 .states = SS_CONN,
234 },
235 [AF_UNIX] = {
236 .dbs = UNIX_DBM,
237 .states = SS_CONN,
238 },
239 [AF_PACKET] = {
240 .dbs = PACKET_DBM,
241 .states = (1 << SS_CLOSE),
242 },
243 [AF_NETLINK] = {
244 .dbs = (1 << NETLINK_DB),
245 .states = (1 << SS_CLOSE),
246 },
247 };
248
249 static int do_default = 1;
250 static struct filter current_filter;
251
252 static void filter_db_set(struct filter *f, int db)
253 {
254 f->states |= default_dbs[db].states;
255 f->dbs |= 1 << db;
256 do_default = 0;
257 }
258
259 static void filter_af_set(struct filter *f, int af)
260 {
261 f->states |= default_afs[af].states;
262 f->families |= 1 << af;
263 do_default = 0;
264 preferred_family = af;
265 }
266
267 static int filter_af_get(struct filter *f, int af)
268 {
269 return f->families & (1 << af);
270 }
271
272 static void filter_default_dbs(struct filter *f)
273 {
274 filter_db_set(f, UDP_DB);
275 filter_db_set(f, DCCP_DB);
276 filter_db_set(f, TCP_DB);
277 filter_db_set(f, RAW_DB);
278 filter_db_set(f, UNIX_ST_DB);
279 filter_db_set(f, UNIX_DG_DB);
280 filter_db_set(f, UNIX_SQ_DB);
281 filter_db_set(f, PACKET_R_DB);
282 filter_db_set(f, PACKET_DG_DB);
283 filter_db_set(f, NETLINK_DB);
284 filter_db_set(f, SCTP_DB);
285 }
286
287 static void filter_states_set(struct filter *f, int states)
288 {
289 if (states)
290 f->states = states;
291 }
292
293 static void filter_merge_defaults(struct filter *f)
294 {
295 int db;
296 int af;
297
298 for (db = 0; db < MAX_DB; db++) {
299 if (!(f->dbs & (1 << db)))
300 continue;
301
302 if (!(default_dbs[db].families & f->families))
303 f->families |= default_dbs[db].families;
304 }
305 for (af = 0; af < AF_MAX; af++) {
306 if (!(f->families & (1 << af)))
307 continue;
308
309 if (!(default_afs[af].dbs & f->dbs))
310 f->dbs |= default_afs[af].dbs;
311 }
312 }
313
314 static FILE *generic_proc_open(const char *env, const char *name)
315 {
316 const char *p = getenv(env);
317 char store[128];
318
319 if (!p) {
320 p = getenv("PROC_ROOT") ? : "/proc";
321 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
322 p = store;
323 }
324
325 return fopen(p, "r");
326 }
327 #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
328 #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
329 #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
330 #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
331 #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
332 #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
333 #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
334 #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
335 "net/packet")
336 #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
337 "net/netlink")
338 #define slabinfo_open() generic_proc_open("PROC_SLABINFO", "slabinfo")
339 #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
340 "net/sockstat")
341 #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
342 "net/sockstat6")
343 #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
344 #define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
345 "sys/net/ipv4/ip_local_port_range")
346
347 struct user_ent {
348 struct user_ent *next;
349 unsigned int ino;
350 int pid;
351 int fd;
352 char *process;
353 char *process_ctx;
354 char *socket_ctx;
355 };
356
357 #define USER_ENT_HASH_SIZE 256
358 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
359
360 static int user_ent_hashfn(unsigned int ino)
361 {
362 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
363
364 return val & (USER_ENT_HASH_SIZE - 1);
365 }
366
367 static void user_ent_add(unsigned int ino, char *process,
368 int pid, int fd,
369 char *proc_ctx,
370 char *sock_ctx)
371 {
372 struct user_ent *p, **pp;
373
374 p = malloc(sizeof(struct user_ent));
375 if (!p) {
376 fprintf(stderr, "ss: failed to malloc buffer\n");
377 abort();
378 }
379 p->next = NULL;
380 p->ino = ino;
381 p->pid = pid;
382 p->fd = fd;
383 p->process = strdup(process);
384 p->process_ctx = strdup(proc_ctx);
385 p->socket_ctx = strdup(sock_ctx);
386
387 pp = &user_ent_hash[user_ent_hashfn(ino)];
388 p->next = *pp;
389 *pp = p;
390 }
391
392 static void user_ent_destroy(void)
393 {
394 struct user_ent *p, *p_next;
395 int cnt = 0;
396
397 while (cnt != USER_ENT_HASH_SIZE) {
398 p = user_ent_hash[cnt];
399 while (p) {
400 free(p->process);
401 free(p->process_ctx);
402 free(p->socket_ctx);
403 p_next = p->next;
404 free(p);
405 p = p_next;
406 }
407 cnt++;
408 }
409 }
410
411 static void user_ent_hash_build(void)
412 {
413 const char *root = getenv("PROC_ROOT") ? : "/proc/";
414 struct dirent *d;
415 char name[1024];
416 int nameoff;
417 DIR *dir;
418 char *pid_context;
419 char *sock_context;
420 const char *no_ctx = "unavailable";
421 static int user_ent_hash_build_init;
422
423 /* If show_users & show_proc_ctx set only do this once */
424 if (user_ent_hash_build_init != 0)
425 return;
426
427 user_ent_hash_build_init = 1;
428
429 strlcpy(name, root, sizeof(name));
430
431 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
432 strcat(name, "/");
433
434 nameoff = strlen(name);
435
436 dir = opendir(name);
437 if (!dir)
438 return;
439
440 while ((d = readdir(dir)) != NULL) {
441 struct dirent *d1;
442 char process[16];
443 char *p;
444 int pid, pos;
445 DIR *dir1;
446 char crap;
447
448 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
449 continue;
450
451 if (getpidcon(pid, &pid_context) != 0)
452 pid_context = strdup(no_ctx);
453
454 snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
455 pos = strlen(name);
456 if ((dir1 = opendir(name)) == NULL) {
457 free(pid_context);
458 continue;
459 }
460
461 process[0] = '\0';
462 p = process;
463
464 while ((d1 = readdir(dir1)) != NULL) {
465 const char *pattern = "socket:[";
466 unsigned int ino;
467 char lnk[64];
468 int fd;
469 ssize_t link_len;
470 char tmp[1024];
471
472 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
473 continue;
474
475 snprintf(name+pos, sizeof(name) - pos, "%d", fd);
476
477 link_len = readlink(name, lnk, sizeof(lnk)-1);
478 if (link_len == -1)
479 continue;
480 lnk[link_len] = '\0';
481
482 if (strncmp(lnk, pattern, strlen(pattern)))
483 continue;
484
485 sscanf(lnk, "socket:[%u]", &ino);
486
487 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
488 root, pid, d1->d_name);
489
490 if (getfilecon(tmp, &sock_context) <= 0)
491 sock_context = strdup(no_ctx);
492
493 if (*p == '\0') {
494 FILE *fp;
495
496 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
497 root, pid);
498 if ((fp = fopen(tmp, "r")) != NULL) {
499 if (fscanf(fp, "%*d (%[^)])", p) < 1)
500 ; /* ignore */
501 fclose(fp);
502 }
503 }
504 user_ent_add(ino, p, pid, fd,
505 pid_context, sock_context);
506 free(sock_context);
507 }
508 free(pid_context);
509 closedir(dir1);
510 }
511 closedir(dir);
512 }
513
514 enum entry_types {
515 USERS,
516 PROC_CTX,
517 PROC_SOCK_CTX
518 };
519
520 #define ENTRY_BUF_SIZE 512
521 static int find_entry(unsigned int ino, char **buf, int type)
522 {
523 struct user_ent *p;
524 int cnt = 0;
525 char *ptr;
526 char *new_buf;
527 int len, new_buf_len;
528 int buf_used = 0;
529 int buf_len = 0;
530
531 if (!ino)
532 return 0;
533
534 p = user_ent_hash[user_ent_hashfn(ino)];
535 ptr = *buf = NULL;
536 while (p) {
537 if (p->ino != ino)
538 goto next;
539
540 while (1) {
541 ptr = *buf + buf_used;
542 switch (type) {
543 case USERS:
544 len = snprintf(ptr, buf_len - buf_used,
545 "(\"%s\",pid=%d,fd=%d),",
546 p->process, p->pid, p->fd);
547 break;
548 case PROC_CTX:
549 len = snprintf(ptr, buf_len - buf_used,
550 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
551 p->process, p->pid,
552 p->process_ctx, p->fd);
553 break;
554 case PROC_SOCK_CTX:
555 len = snprintf(ptr, buf_len - buf_used,
556 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
557 p->process, p->pid,
558 p->process_ctx, p->fd,
559 p->socket_ctx);
560 break;
561 default:
562 fprintf(stderr, "ss: invalid type: %d\n", type);
563 abort();
564 }
565
566 if (len < 0 || len >= buf_len - buf_used) {
567 new_buf_len = buf_len + ENTRY_BUF_SIZE;
568 new_buf = realloc(*buf, new_buf_len);
569 if (!new_buf) {
570 fprintf(stderr, "ss: failed to malloc buffer\n");
571 abort();
572 }
573 *buf = new_buf;
574 buf_len = new_buf_len;
575 continue;
576 } else {
577 buf_used += len;
578 break;
579 }
580 }
581 cnt++;
582 next:
583 p = p->next;
584 }
585 if (buf_used) {
586 ptr = *buf + buf_used;
587 ptr[-1] = '\0';
588 }
589 return cnt;
590 }
591
592 /* Get stats from slab */
593
594 struct slabstat {
595 int socks;
596 int tcp_ports;
597 int tcp_tws;
598 int tcp_syns;
599 int skbs;
600 };
601
602 static struct slabstat slabstat;
603
604 static int get_slabstat(struct slabstat *s)
605 {
606 char buf[256];
607 FILE *fp;
608 int cnt;
609 static int slabstat_valid;
610 static const char * const slabstat_ids[] = {
611 "sock",
612 "tcp_bind_bucket",
613 "tcp_tw_bucket",
614 "tcp_open_request",
615 "skbuff_head_cache",
616 };
617
618 if (slabstat_valid)
619 return 0;
620
621 memset(s, 0, sizeof(*s));
622
623 fp = slabinfo_open();
624 if (!fp)
625 return -1;
626
627 cnt = sizeof(*s)/sizeof(int);
628
629 if (!fgets(buf, sizeof(buf), fp)) {
630 fclose(fp);
631 return -1;
632 }
633 while (fgets(buf, sizeof(buf), fp) != NULL) {
634 int i;
635
636 for (i = 0; i < ARRAY_SIZE(slabstat_ids); i++) {
637 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
638 sscanf(buf, "%*s%d", ((int *)s) + i);
639 cnt--;
640 break;
641 }
642 }
643 if (cnt <= 0)
644 break;
645 }
646
647 slabstat_valid = 1;
648
649 fclose(fp);
650 return 0;
651 }
652
653 static unsigned long long cookie_sk_get(const uint32_t *cookie)
654 {
655 return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
656 }
657
658 static const char *sctp_sstate_name[] = {
659 [SCTP_STATE_CLOSED] = "CLOSED",
660 [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
661 [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
662 [SCTP_STATE_ESTABLISHED] = "ESTAB",
663 [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
664 [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
665 [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
666 [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
667 };
668
669 struct sockstat {
670 struct sockstat *next;
671 unsigned int type;
672 uint16_t prot;
673 uint16_t raw_prot;
674 inet_prefix local;
675 inet_prefix remote;
676 int lport;
677 int rport;
678 int state;
679 int rq, wq;
680 unsigned int ino;
681 unsigned int uid;
682 int refcnt;
683 unsigned int iface;
684 unsigned long long sk;
685 char *name;
686 char *peer_name;
687 __u32 mark;
688 };
689
690 struct dctcpstat {
691 unsigned int ce_state;
692 unsigned int alpha;
693 unsigned int ab_ecn;
694 unsigned int ab_tot;
695 bool enabled;
696 };
697
698 struct tcpstat {
699 struct sockstat ss;
700 unsigned int timer;
701 unsigned int timeout;
702 int probes;
703 char cong_alg[16];
704 double rto, ato, rtt, rttvar;
705 int qack, ssthresh, backoff;
706 double send_bps;
707 int snd_wscale;
708 int rcv_wscale;
709 int mss;
710 int rcv_mss;
711 int advmss;
712 unsigned int cwnd;
713 unsigned int lastsnd;
714 unsigned int lastrcv;
715 unsigned int lastack;
716 double pacing_rate;
717 double pacing_rate_max;
718 double delivery_rate;
719 unsigned long long bytes_acked;
720 unsigned long long bytes_received;
721 unsigned int segs_out;
722 unsigned int segs_in;
723 unsigned int data_segs_out;
724 unsigned int data_segs_in;
725 unsigned int unacked;
726 unsigned int retrans;
727 unsigned int retrans_total;
728 unsigned int lost;
729 unsigned int sacked;
730 unsigned int fackets;
731 unsigned int reordering;
732 unsigned int not_sent;
733 double rcv_rtt;
734 double min_rtt;
735 int rcv_space;
736 unsigned long long busy_time;
737 unsigned long long rwnd_limited;
738 unsigned long long sndbuf_limited;
739 bool has_ts_opt;
740 bool has_sack_opt;
741 bool has_ecn_opt;
742 bool has_ecnseen_opt;
743 bool has_fastopen_opt;
744 bool has_wscale_opt;
745 bool app_limited;
746 struct dctcpstat *dctcp;
747 struct tcp_bbr_info *bbr_info;
748 };
749
750 /* SCTP assocs share the same inode number with their parent endpoint. So if we
751 * have seen the inode number before, it must be an assoc instead of the next
752 * endpoint. */
753 static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
754 {
755 if (strcmp(sock_name, "sctp"))
756 return false;
757 if (!sctp_ino || sctp_ino != s->ino)
758 return false;
759 return true;
760 }
761
762 static const char *unix_netid_name(int type)
763 {
764 switch (type) {
765 case SOCK_STREAM:
766 return "u_str";
767 case SOCK_SEQPACKET:
768 return "u_seq";
769 case SOCK_DGRAM:
770 default:
771 return "u_dgr";
772 }
773 }
774
775 static const char *proto_name(int protocol)
776 {
777 switch (protocol) {
778 case 0:
779 return "raw";
780 case IPPROTO_UDP:
781 return "udp";
782 case IPPROTO_TCP:
783 return "tcp";
784 case IPPROTO_SCTP:
785 return "sctp";
786 case IPPROTO_DCCP:
787 return "dccp";
788 case IPPROTO_ICMPV6:
789 return "icmp6";
790 }
791
792 return "???";
793 }
794
795 static void sock_state_print(struct sockstat *s)
796 {
797 const char *sock_name;
798 static const char * const sstate_name[] = {
799 "UNKNOWN",
800 [SS_ESTABLISHED] = "ESTAB",
801 [SS_SYN_SENT] = "SYN-SENT",
802 [SS_SYN_RECV] = "SYN-RECV",
803 [SS_FIN_WAIT1] = "FIN-WAIT-1",
804 [SS_FIN_WAIT2] = "FIN-WAIT-2",
805 [SS_TIME_WAIT] = "TIME-WAIT",
806 [SS_CLOSE] = "UNCONN",
807 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
808 [SS_LAST_ACK] = "LAST-ACK",
809 [SS_LISTEN] = "LISTEN",
810 [SS_CLOSING] = "CLOSING",
811 };
812
813 switch (s->local.family) {
814 case AF_UNIX:
815 sock_name = unix_netid_name(s->type);
816 break;
817 case AF_INET:
818 case AF_INET6:
819 sock_name = proto_name(s->type);
820 break;
821 case AF_PACKET:
822 sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
823 break;
824 case AF_NETLINK:
825 sock_name = "nl";
826 break;
827 default:
828 sock_name = "unknown";
829 }
830
831 if (netid_width)
832 printf("%-*s ", netid_width,
833 is_sctp_assoc(s, sock_name) ? "" : sock_name);
834 if (state_width) {
835 if (is_sctp_assoc(s, sock_name))
836 printf("`- %-*s ", state_width - 3,
837 sctp_sstate_name[s->state]);
838 else
839 printf("%-*s ", state_width, sstate_name[s->state]);
840 }
841
842 printf("%-6d %-6d %s", s->rq, s->wq, odd_width_pad);
843 }
844
845 static void sock_details_print(struct sockstat *s)
846 {
847 if (s->uid)
848 printf(" uid:%u", s->uid);
849
850 printf(" ino:%u", s->ino);
851 printf(" sk:%llx", s->sk);
852
853 if (s->mark)
854 printf(" fwmark:0x%x", s->mark);
855 }
856
857 static void sock_addr_print_width(int addr_len, const char *addr, char *delim,
858 int port_len, const char *port, const char *ifname)
859 {
860 if (ifname) {
861 printf("%*s%%%s%s%-*s ", addr_len, addr, ifname, delim,
862 port_len, port);
863 } else {
864 printf("%*s%s%-*s ", addr_len, addr, delim, port_len, port);
865 }
866 }
867
868 static void sock_addr_print(const char *addr, char *delim, const char *port,
869 const char *ifname)
870 {
871 sock_addr_print_width(addr_width, addr, delim, serv_width, port, ifname);
872 }
873
874 static const char *print_ms_timer(unsigned int timeout)
875 {
876 static char buf[64];
877 int secs, msecs, minutes;
878
879 secs = timeout/1000;
880 minutes = secs/60;
881 secs = secs%60;
882 msecs = timeout%1000;
883 buf[0] = 0;
884 if (minutes) {
885 msecs = 0;
886 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
887 if (minutes > 9)
888 secs = 0;
889 }
890 if (secs) {
891 if (secs > 9)
892 msecs = 0;
893 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
894 }
895 if (msecs)
896 sprintf(buf+strlen(buf), "%03dms", msecs);
897 return buf;
898 }
899
900 struct scache {
901 struct scache *next;
902 int port;
903 char *name;
904 const char *proto;
905 };
906
907 struct scache *rlist;
908
909 static void init_service_resolver(void)
910 {
911 char buf[128];
912 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
913
914 if (!fp)
915 return;
916
917 if (!fgets(buf, sizeof(buf), fp)) {
918 pclose(fp);
919 return;
920 }
921 while (fgets(buf, sizeof(buf), fp) != NULL) {
922 unsigned int progn, port;
923 char proto[128], prog[128] = "rpc.";
924 struct scache *c;
925
926 if (sscanf(buf, "%u %*d %s %u %s",
927 &progn, proto, &port, prog+4) != 4)
928 continue;
929
930 if (!(c = malloc(sizeof(*c))))
931 continue;
932
933 c->port = port;
934 c->name = strdup(prog);
935 if (strcmp(proto, TCP_PROTO) == 0)
936 c->proto = TCP_PROTO;
937 else if (strcmp(proto, UDP_PROTO) == 0)
938 c->proto = UDP_PROTO;
939 else if (strcmp(proto, SCTP_PROTO) == 0)
940 c->proto = SCTP_PROTO;
941 else
942 c->proto = NULL;
943 c->next = rlist;
944 rlist = c;
945 }
946 pclose(fp);
947 }
948
949 /* Even do not try default linux ephemeral port ranges:
950 * default /etc/services contains so much of useless crap
951 * wouldbe "allocated" to this area that resolution
952 * is really harmful. I shrug each time when seeing
953 * "socks" or "cfinger" in dumps.
954 */
955 static int is_ephemeral(int port)
956 {
957 static int min = 0, max;
958
959 if (!min) {
960 FILE *f = ephemeral_ports_open();
961
962 if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
963 min = 1024;
964 max = 4999;
965 }
966 if (f)
967 fclose(f);
968 }
969 return port >= min && port <= max;
970 }
971
972
973 static const char *__resolve_service(int port)
974 {
975 struct scache *c;
976
977 for (c = rlist; c; c = c->next) {
978 if (c->port == port && c->proto == dg_proto)
979 return c->name;
980 }
981
982 if (!is_ephemeral(port)) {
983 static int notfirst;
984 struct servent *se;
985
986 if (!notfirst) {
987 setservent(1);
988 notfirst = 1;
989 }
990 se = getservbyport(htons(port), dg_proto);
991 if (se)
992 return se->s_name;
993 }
994
995 return NULL;
996 }
997
998 #define SCACHE_BUCKETS 1024
999 static struct scache *cache_htab[SCACHE_BUCKETS];
1000
1001 static const char *resolve_service(int port)
1002 {
1003 static char buf[128];
1004 struct scache *c;
1005 const char *res;
1006 int hash;
1007
1008 if (port == 0) {
1009 buf[0] = '*';
1010 buf[1] = 0;
1011 return buf;
1012 }
1013
1014 if (!resolve_services)
1015 goto do_numeric;
1016
1017 if (dg_proto == RAW_PROTO)
1018 return inet_proto_n2a(port, buf, sizeof(buf));
1019
1020
1021 hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
1022
1023 for (c = cache_htab[hash]; c; c = c->next) {
1024 if (c->port == port && c->proto == dg_proto)
1025 goto do_cache;
1026 }
1027
1028 c = malloc(sizeof(*c));
1029 if (!c)
1030 goto do_numeric;
1031 res = __resolve_service(port);
1032 c->port = port;
1033 c->name = res ? strdup(res) : NULL;
1034 c->proto = dg_proto;
1035 c->next = cache_htab[hash];
1036 cache_htab[hash] = c;
1037
1038 do_cache:
1039 if (c->name)
1040 return c->name;
1041
1042 do_numeric:
1043 sprintf(buf, "%u", port);
1044 return buf;
1045 }
1046
1047 static void inet_addr_print(const inet_prefix *a, int port,
1048 unsigned int ifindex, bool v6only)
1049 {
1050 char buf[1024];
1051 const char *ap = buf;
1052 int est_len = addr_width;
1053 const char *ifname = NULL;
1054
1055 if (a->family == AF_INET) {
1056 ap = format_host(AF_INET, 4, a->data);
1057 } else {
1058 if (!v6only &&
1059 !memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) {
1060 buf[0] = '*';
1061 buf[1] = 0;
1062 } else {
1063 ap = format_host(a->family, 16, a->data);
1064
1065 /* Numeric IPv6 addresses should be bracketed */
1066 if (strchr(ap, ':')) {
1067 snprintf(buf, sizeof(buf),
1068 "[%s]", ap);
1069 ap = buf;
1070 }
1071
1072 est_len = strlen(ap);
1073 if (est_len <= addr_width)
1074 est_len = addr_width;
1075 else
1076 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
1077 }
1078 }
1079
1080 if (ifindex) {
1081 ifname = ll_index_to_name(ifindex);
1082 est_len -= strlen(ifname) + 1; /* +1 for percent char */
1083 if (est_len < 0)
1084 est_len = 0;
1085 }
1086
1087 sock_addr_print_width(est_len, ap, ":", serv_width, resolve_service(port),
1088 ifname);
1089 }
1090
1091 struct aafilter {
1092 inet_prefix addr;
1093 int port;
1094 unsigned int iface;
1095 __u32 mark;
1096 __u32 mask;
1097 struct aafilter *next;
1098 };
1099
1100 static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
1101 int plen)
1102 {
1103 if (!inet_addr_match(a, p, plen))
1104 return 0;
1105
1106 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
1107 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
1108 * sockets. Fair? */
1109 if (p->family == AF_INET && a->family == AF_INET6) {
1110 if (a->data[0] == 0 && a->data[1] == 0 &&
1111 a->data[2] == htonl(0xffff)) {
1112 inet_prefix tmp = *a;
1113
1114 tmp.data[0] = a->data[3];
1115 return inet_addr_match(&tmp, p, plen);
1116 }
1117 }
1118 return 1;
1119 }
1120
1121 static int unix_match(const inet_prefix *a, const inet_prefix *p)
1122 {
1123 char *addr, *pattern;
1124
1125 memcpy(&addr, a->data, sizeof(addr));
1126 memcpy(&pattern, p->data, sizeof(pattern));
1127 if (pattern == NULL)
1128 return 1;
1129 if (addr == NULL)
1130 addr = "";
1131 return !fnmatch(pattern, addr, 0);
1132 }
1133
1134 static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
1135 {
1136 switch (f->type) {
1137 case SSF_S_AUTO:
1138 {
1139 if (s->local.family == AF_UNIX) {
1140 char *p;
1141
1142 memcpy(&p, s->local.data, sizeof(p));
1143 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
1144 strspn(p+1, "0123456789abcdef") == 5);
1145 }
1146 if (s->local.family == AF_PACKET)
1147 return s->lport == 0 && s->local.data[0] == 0;
1148 if (s->local.family == AF_NETLINK)
1149 return s->lport < 0;
1150
1151 return is_ephemeral(s->lport);
1152 }
1153 case SSF_DCOND:
1154 {
1155 struct aafilter *a = (void *)f->pred;
1156
1157 if (a->addr.family == AF_UNIX)
1158 return unix_match(&s->remote, &a->addr);
1159 if (a->port != -1 && a->port != s->rport)
1160 return 0;
1161 if (a->addr.bitlen) {
1162 do {
1163 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
1164 return 1;
1165 } while ((a = a->next) != NULL);
1166 return 0;
1167 }
1168 return 1;
1169 }
1170 case SSF_SCOND:
1171 {
1172 struct aafilter *a = (void *)f->pred;
1173
1174 if (a->addr.family == AF_UNIX)
1175 return unix_match(&s->local, &a->addr);
1176 if (a->port != -1 && a->port != s->lport)
1177 return 0;
1178 if (a->addr.bitlen) {
1179 do {
1180 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
1181 return 1;
1182 } while ((a = a->next) != NULL);
1183 return 0;
1184 }
1185 return 1;
1186 }
1187 case SSF_D_GE:
1188 {
1189 struct aafilter *a = (void *)f->pred;
1190
1191 return s->rport >= a->port;
1192 }
1193 case SSF_D_LE:
1194 {
1195 struct aafilter *a = (void *)f->pred;
1196
1197 return s->rport <= a->port;
1198 }
1199 case SSF_S_GE:
1200 {
1201 struct aafilter *a = (void *)f->pred;
1202
1203 return s->lport >= a->port;
1204 }
1205 case SSF_S_LE:
1206 {
1207 struct aafilter *a = (void *)f->pred;
1208
1209 return s->lport <= a->port;
1210 }
1211 case SSF_DEVCOND:
1212 {
1213 struct aafilter *a = (void *)f->pred;
1214
1215 return s->iface == a->iface;
1216 }
1217 case SSF_MARKMASK:
1218 {
1219 struct aafilter *a = (void *)f->pred;
1220
1221 return (s->mark & a->mask) == a->mark;
1222 }
1223 /* Yup. It is recursion. Sorry. */
1224 case SSF_AND:
1225 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
1226 case SSF_OR:
1227 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
1228 case SSF_NOT:
1229 return !run_ssfilter(f->pred, s);
1230 default:
1231 abort();
1232 }
1233 }
1234
1235 /* Relocate external jumps by reloc. */
1236 static void ssfilter_patch(char *a, int len, int reloc)
1237 {
1238 while (len > 0) {
1239 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
1240
1241 if (op->no == len+4)
1242 op->no += reloc;
1243 len -= op->yes;
1244 a += op->yes;
1245 }
1246 if (len < 0)
1247 abort();
1248 }
1249
1250 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
1251 {
1252 switch (f->type) {
1253 case SSF_S_AUTO:
1254 {
1255 if (!(*bytecode = malloc(4))) abort();
1256 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
1257 return 4;
1258 }
1259 case SSF_DCOND:
1260 case SSF_SCOND:
1261 {
1262 struct aafilter *a = (void *)f->pred;
1263 struct aafilter *b;
1264 char *ptr;
1265 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
1266 int len = 0;
1267
1268 for (b = a; b; b = b->next) {
1269 len += 4 + sizeof(struct inet_diag_hostcond);
1270 if (a->addr.family == AF_INET6)
1271 len += 16;
1272 else
1273 len += 4;
1274 if (b->next)
1275 len += 4;
1276 }
1277 if (!(ptr = malloc(len))) abort();
1278 *bytecode = ptr;
1279 for (b = a; b; b = b->next) {
1280 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
1281 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
1282 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
1283 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
1284
1285 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
1286 cond->family = a->addr.family;
1287 cond->port = a->port;
1288 cond->prefix_len = a->addr.bitlen;
1289 memcpy(cond->addr, a->addr.data, alen);
1290 ptr += oplen;
1291 if (b->next) {
1292 op = (struct inet_diag_bc_op *)ptr;
1293 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
1294 ptr += 4;
1295 }
1296 }
1297 return ptr - *bytecode;
1298 }
1299 case SSF_D_GE:
1300 {
1301 struct aafilter *x = (void *)f->pred;
1302
1303 if (!(*bytecode = malloc(8))) abort();
1304 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1305 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1306 return 8;
1307 }
1308 case SSF_D_LE:
1309 {
1310 struct aafilter *x = (void *)f->pred;
1311
1312 if (!(*bytecode = malloc(8))) abort();
1313 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1314 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1315 return 8;
1316 }
1317 case SSF_S_GE:
1318 {
1319 struct aafilter *x = (void *)f->pred;
1320
1321 if (!(*bytecode = malloc(8))) abort();
1322 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1323 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1324 return 8;
1325 }
1326 case SSF_S_LE:
1327 {
1328 struct aafilter *x = (void *)f->pred;
1329
1330 if (!(*bytecode = malloc(8))) abort();
1331 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1332 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1333 return 8;
1334 }
1335
1336 case SSF_AND:
1337 {
1338 char *a1 = NULL, *a2 = NULL, *a;
1339 int l1, l2;
1340
1341 l1 = ssfilter_bytecompile(f->pred, &a1);
1342 l2 = ssfilter_bytecompile(f->post, &a2);
1343 if (!l1 || !l2) {
1344 free(a1);
1345 free(a2);
1346 return 0;
1347 }
1348 if (!(a = malloc(l1+l2))) abort();
1349 memcpy(a, a1, l1);
1350 memcpy(a+l1, a2, l2);
1351 free(a1); free(a2);
1352 ssfilter_patch(a, l1, l2);
1353 *bytecode = a;
1354 return l1+l2;
1355 }
1356 case SSF_OR:
1357 {
1358 char *a1 = NULL, *a2 = NULL, *a;
1359 int l1, l2;
1360
1361 l1 = ssfilter_bytecompile(f->pred, &a1);
1362 l2 = ssfilter_bytecompile(f->post, &a2);
1363 if (!l1 || !l2) {
1364 free(a1);
1365 free(a2);
1366 return 0;
1367 }
1368 if (!(a = malloc(l1+l2+4))) abort();
1369 memcpy(a, a1, l1);
1370 memcpy(a+l1+4, a2, l2);
1371 free(a1); free(a2);
1372 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
1373 *bytecode = a;
1374 return l1+l2+4;
1375 }
1376 case SSF_NOT:
1377 {
1378 char *a1 = NULL, *a;
1379 int l1;
1380
1381 l1 = ssfilter_bytecompile(f->pred, &a1);
1382 if (!l1) {
1383 free(a1);
1384 return 0;
1385 }
1386 if (!(a = malloc(l1+4))) abort();
1387 memcpy(a, a1, l1);
1388 free(a1);
1389 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
1390 *bytecode = a;
1391 return l1+4;
1392 }
1393 case SSF_DEVCOND:
1394 {
1395 /* bytecompile for SSF_DEVCOND not supported yet */
1396 return 0;
1397 }
1398 case SSF_MARKMASK:
1399 {
1400 struct aafilter *a = (void *)f->pred;
1401 struct instr {
1402 struct inet_diag_bc_op op;
1403 struct inet_diag_markcond cond;
1404 };
1405 int inslen = sizeof(struct instr);
1406
1407 if (!(*bytecode = malloc(inslen))) abort();
1408 ((struct instr *)*bytecode)[0] = (struct instr) {
1409 { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
1410 { a->mark, a->mask},
1411 };
1412
1413 return inslen;
1414 }
1415 default:
1416 abort();
1417 }
1418 }
1419
1420 static int remember_he(struct aafilter *a, struct hostent *he)
1421 {
1422 char **ptr = he->h_addr_list;
1423 int cnt = 0;
1424 int len;
1425
1426 if (he->h_addrtype == AF_INET)
1427 len = 4;
1428 else if (he->h_addrtype == AF_INET6)
1429 len = 16;
1430 else
1431 return 0;
1432
1433 while (*ptr) {
1434 struct aafilter *b = a;
1435
1436 if (a->addr.bitlen) {
1437 if ((b = malloc(sizeof(*b))) == NULL)
1438 return cnt;
1439 *b = *a;
1440 a->next = b;
1441 }
1442 memcpy(b->addr.data, *ptr, len);
1443 b->addr.bytelen = len;
1444 b->addr.bitlen = len*8;
1445 b->addr.family = he->h_addrtype;
1446 ptr++;
1447 cnt++;
1448 }
1449 return cnt;
1450 }
1451
1452 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
1453 {
1454 static int notfirst;
1455 int cnt = 0;
1456 struct hostent *he;
1457
1458 a->addr.bitlen = 0;
1459 if (!notfirst) {
1460 sethostent(1);
1461 notfirst = 1;
1462 }
1463 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1464 if (he)
1465 cnt = remember_he(a, he);
1466 if (fam == AF_UNSPEC) {
1467 he = gethostbyname2(addr, AF_INET6);
1468 if (he)
1469 cnt += remember_he(a, he);
1470 }
1471 return !cnt;
1472 }
1473
1474 static int xll_initted;
1475
1476 static void xll_init(void)
1477 {
1478 struct rtnl_handle rth;
1479
1480 if (rtnl_open(&rth, 0) < 0)
1481 exit(1);
1482
1483 ll_init_map(&rth);
1484 rtnl_close(&rth);
1485 xll_initted = 1;
1486 }
1487
1488 static const char *xll_index_to_name(int index)
1489 {
1490 if (!xll_initted)
1491 xll_init();
1492 return ll_index_to_name(index);
1493 }
1494
1495 static int xll_name_to_index(const char *dev)
1496 {
1497 if (!xll_initted)
1498 xll_init();
1499 return ll_name_to_index(dev);
1500 }
1501
1502 void *parse_devcond(char *name)
1503 {
1504 struct aafilter a = { .iface = 0 };
1505 struct aafilter *res;
1506
1507 a.iface = xll_name_to_index(name);
1508 if (a.iface == 0) {
1509 char *end;
1510 unsigned long n;
1511
1512 n = strtoul(name, &end, 0);
1513 if (!end || end == name || *end || n > UINT_MAX)
1514 return NULL;
1515
1516 a.iface = n;
1517 }
1518
1519 res = malloc(sizeof(*res));
1520 *res = a;
1521
1522 return res;
1523 }
1524
1525 void *parse_hostcond(char *addr, bool is_port)
1526 {
1527 char *port = NULL;
1528 struct aafilter a = { .port = -1 };
1529 struct aafilter *res;
1530 int fam = preferred_family;
1531 struct filter *f = &current_filter;
1532
1533 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1534 char *p;
1535
1536 a.addr.family = AF_UNIX;
1537 if (strncmp(addr, "unix:", 5) == 0)
1538 addr += 5;
1539 p = strdup(addr);
1540 a.addr.bitlen = 8*strlen(p);
1541 memcpy(a.addr.data, &p, sizeof(p));
1542 fam = AF_UNIX;
1543 goto out;
1544 }
1545
1546 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1547 a.addr.family = AF_PACKET;
1548 a.addr.bitlen = 0;
1549 if (strncmp(addr, "link:", 5) == 0)
1550 addr += 5;
1551 port = strchr(addr, ':');
1552 if (port) {
1553 *port = 0;
1554 if (port[1] && strcmp(port+1, "*")) {
1555 if (get_integer(&a.port, port+1, 0)) {
1556 if ((a.port = xll_name_to_index(port+1)) <= 0)
1557 return NULL;
1558 }
1559 }
1560 }
1561 if (addr[0] && strcmp(addr, "*")) {
1562 unsigned short tmp;
1563
1564 a.addr.bitlen = 32;
1565 if (ll_proto_a2n(&tmp, addr))
1566 return NULL;
1567 a.addr.data[0] = ntohs(tmp);
1568 }
1569 fam = AF_PACKET;
1570 goto out;
1571 }
1572
1573 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1574 a.addr.family = AF_NETLINK;
1575 a.addr.bitlen = 0;
1576 if (strncmp(addr, "netlink:", 8) == 0)
1577 addr += 8;
1578 port = strchr(addr, ':');
1579 if (port) {
1580 *port = 0;
1581 if (port[1] && strcmp(port+1, "*")) {
1582 if (get_integer(&a.port, port+1, 0)) {
1583 if (strcmp(port+1, "kernel") == 0)
1584 a.port = 0;
1585 else
1586 return NULL;
1587 }
1588 }
1589 }
1590 if (addr[0] && strcmp(addr, "*")) {
1591 a.addr.bitlen = 32;
1592 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
1593 return NULL;
1594 }
1595 fam = AF_NETLINK;
1596 goto out;
1597 }
1598
1599 if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
1600 fam = AF_INET;
1601 if (!strncmp(addr, "inet:", 5))
1602 addr += 5;
1603 } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
1604 fam = AF_INET6;
1605 if (!strncmp(addr, "inet6:", 6))
1606 addr += 6;
1607 }
1608
1609 /* URL-like literal [] */
1610 if (addr[0] == '[') {
1611 addr++;
1612 if ((port = strchr(addr, ']')) == NULL)
1613 return NULL;
1614 *port++ = 0;
1615 } else if (addr[0] == '*') {
1616 port = addr+1;
1617 } else {
1618 port = strrchr(strchr(addr, '/') ? : addr, ':');
1619 }
1620
1621 if (is_port)
1622 port = addr;
1623
1624 if (port && *port) {
1625 if (*port == ':')
1626 *port++ = 0;
1627
1628 if (*port && *port != '*') {
1629 if (get_integer(&a.port, port, 0)) {
1630 struct servent *se1 = NULL;
1631 struct servent *se2 = NULL;
1632
1633 if (current_filter.dbs&(1<<UDP_DB))
1634 se1 = getservbyname(port, UDP_PROTO);
1635 if (current_filter.dbs&(1<<TCP_DB))
1636 se2 = getservbyname(port, TCP_PROTO);
1637 if (se1 && se2 && se1->s_port != se2->s_port) {
1638 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1639 return NULL;
1640 }
1641 if (!se1)
1642 se1 = se2;
1643 if (se1) {
1644 a.port = ntohs(se1->s_port);
1645 } else {
1646 struct scache *s;
1647
1648 for (s = rlist; s; s = s->next) {
1649 if ((s->proto == UDP_PROTO &&
1650 (current_filter.dbs&(1<<UDP_DB))) ||
1651 (s->proto == TCP_PROTO &&
1652 (current_filter.dbs&(1<<TCP_DB)))) {
1653 if (s->name && strcmp(s->name, port) == 0) {
1654 if (a.port > 0 && a.port != s->port) {
1655 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1656 return NULL;
1657 }
1658 a.port = s->port;
1659 }
1660 }
1661 }
1662 if (a.port <= 0) {
1663 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1664 return NULL;
1665 }
1666 }
1667 }
1668 }
1669 }
1670 if (!is_port && *addr && *addr != '*') {
1671 if (get_prefix_1(&a.addr, addr, fam)) {
1672 if (get_dns_host(&a, addr, fam)) {
1673 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1674 return NULL;
1675 }
1676 }
1677 }
1678
1679 out:
1680 if (fam != AF_UNSPEC) {
1681 int states = f->states;
1682 f->families = 0;
1683 filter_af_set(f, fam);
1684 filter_states_set(f, states);
1685 }
1686
1687 res = malloc(sizeof(*res));
1688 if (res)
1689 memcpy(res, &a, sizeof(a));
1690 return res;
1691 }
1692
1693 void *parse_markmask(const char *markmask)
1694 {
1695 struct aafilter a, *res;
1696
1697 if (strchr(markmask, '/')) {
1698 if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
1699 return NULL;
1700 } else {
1701 a.mask = 0xffffffff;
1702 if (sscanf(markmask, "%i", &a.mark) != 1)
1703 return NULL;
1704 }
1705
1706 res = malloc(sizeof(*res));
1707 if (res)
1708 memcpy(res, &a, sizeof(a));
1709 return res;
1710 }
1711
1712 static void proc_ctx_print(struct sockstat *s)
1713 {
1714 char *buf;
1715
1716 if (show_proc_ctx || show_sock_ctx) {
1717 if (find_entry(s->ino, &buf,
1718 (show_proc_ctx & show_sock_ctx) ?
1719 PROC_SOCK_CTX : PROC_CTX) > 0) {
1720 printf(" users:(%s)", buf);
1721 free(buf);
1722 }
1723 } else if (show_users) {
1724 if (find_entry(s->ino, &buf, USERS) > 0) {
1725 printf(" users:(%s)", buf);
1726 free(buf);
1727 }
1728 }
1729 }
1730
1731 static void inet_stats_print(struct sockstat *s, bool v6only)
1732 {
1733 sock_state_print(s);
1734
1735 inet_addr_print(&s->local, s->lport, s->iface, v6only);
1736 inet_addr_print(&s->remote, s->rport, 0, v6only);
1737
1738 proc_ctx_print(s);
1739 }
1740
1741 static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
1742 sockstat * s)
1743 {
1744 s->local.family = s->remote.family = family;
1745 if (family == AF_INET) {
1746 sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
1747 sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
1748 s->local.bytelen = s->remote.bytelen = 4;
1749 return 0;
1750 } else {
1751 sscanf(loc, "%08x%08x%08x%08x:%x",
1752 s->local.data,
1753 s->local.data + 1,
1754 s->local.data + 2,
1755 s->local.data + 3,
1756 &s->lport);
1757 sscanf(rem, "%08x%08x%08x%08x:%x",
1758 s->remote.data,
1759 s->remote.data + 1,
1760 s->remote.data + 2,
1761 s->remote.data + 3,
1762 &s->rport);
1763 s->local.bytelen = s->remote.bytelen = 16;
1764 return 0;
1765 }
1766 return -1;
1767 }
1768
1769 static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
1770 {
1771 char *p;
1772
1773 if ((p = strchr(line, ':')) == NULL)
1774 return -1;
1775
1776 *loc = p+2;
1777 if ((p = strchr(*loc, ':')) == NULL)
1778 return -1;
1779
1780 p[5] = 0;
1781 *rem = p+6;
1782 if ((p = strchr(*rem, ':')) == NULL)
1783 return -1;
1784
1785 p[5] = 0;
1786 *data = p+6;
1787 return 0;
1788 }
1789
1790 static char *sprint_bw(char *buf, double bw)
1791 {
1792 if (bw > 1000000.)
1793 sprintf(buf, "%.1fM", bw / 1000000.);
1794 else if (bw > 1000.)
1795 sprintf(buf, "%.1fK", bw / 1000.);
1796 else
1797 sprintf(buf, "%g", bw);
1798
1799 return buf;
1800 }
1801
1802 static void sctp_stats_print(struct sctp_info *s)
1803 {
1804 if (s->sctpi_tag)
1805 printf(" tag:%x", s->sctpi_tag);
1806 if (s->sctpi_state)
1807 printf(" state:%s", sctp_sstate_name[s->sctpi_state]);
1808 if (s->sctpi_rwnd)
1809 printf(" rwnd:%d", s->sctpi_rwnd);
1810 if (s->sctpi_unackdata)
1811 printf(" unackdata:%d", s->sctpi_unackdata);
1812 if (s->sctpi_penddata)
1813 printf(" penddata:%d", s->sctpi_penddata);
1814 if (s->sctpi_instrms)
1815 printf(" instrms:%d", s->sctpi_instrms);
1816 if (s->sctpi_outstrms)
1817 printf(" outstrms:%d", s->sctpi_outstrms);
1818 if (s->sctpi_inqueue)
1819 printf(" inqueue:%d", s->sctpi_inqueue);
1820 if (s->sctpi_outqueue)
1821 printf(" outqueue:%d", s->sctpi_outqueue);
1822 if (s->sctpi_overall_error)
1823 printf(" overerr:%d", s->sctpi_overall_error);
1824 if (s->sctpi_max_burst)
1825 printf(" maxburst:%d", s->sctpi_max_burst);
1826 if (s->sctpi_maxseg)
1827 printf(" maxseg:%d", s->sctpi_maxseg);
1828 if (s->sctpi_peer_rwnd)
1829 printf(" prwnd:%d", s->sctpi_peer_rwnd);
1830 if (s->sctpi_peer_tag)
1831 printf(" ptag:%x", s->sctpi_peer_tag);
1832 if (s->sctpi_peer_capable)
1833 printf(" pcapable:%d", s->sctpi_peer_capable);
1834 if (s->sctpi_peer_sack)
1835 printf(" psack:%d", s->sctpi_peer_sack);
1836 if (s->sctpi_s_autoclose)
1837 printf(" autoclose:%d", s->sctpi_s_autoclose);
1838 if (s->sctpi_s_adaptation_ind)
1839 printf(" adapind:%d", s->sctpi_s_adaptation_ind);
1840 if (s->sctpi_s_pd_point)
1841 printf(" pdpoint:%d", s->sctpi_s_pd_point);
1842 if (s->sctpi_s_nodelay)
1843 printf(" nodealy:%d", s->sctpi_s_nodelay);
1844 if (s->sctpi_s_disable_fragments)
1845 printf(" nofrag:%d", s->sctpi_s_disable_fragments);
1846 if (s->sctpi_s_v4mapped)
1847 printf(" v4mapped:%d", s->sctpi_s_v4mapped);
1848 if (s->sctpi_s_frag_interleave)
1849 printf(" fraginl:%d", s->sctpi_s_frag_interleave);
1850 }
1851
1852 static void tcp_stats_print(struct tcpstat *s)
1853 {
1854 char b1[64];
1855
1856 if (s->has_ts_opt)
1857 printf(" ts");
1858 if (s->has_sack_opt)
1859 printf(" sack");
1860 if (s->has_ecn_opt)
1861 printf(" ecn");
1862 if (s->has_ecnseen_opt)
1863 printf(" ecnseen");
1864 if (s->has_fastopen_opt)
1865 printf(" fastopen");
1866 if (s->cong_alg[0])
1867 printf(" %s", s->cong_alg);
1868 if (s->has_wscale_opt)
1869 printf(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
1870 if (s->rto)
1871 printf(" rto:%g", s->rto);
1872 if (s->backoff)
1873 printf(" backoff:%u", s->backoff);
1874 if (s->rtt)
1875 printf(" rtt:%g/%g", s->rtt, s->rttvar);
1876 if (s->ato)
1877 printf(" ato:%g", s->ato);
1878
1879 if (s->qack)
1880 printf(" qack:%d", s->qack);
1881 if (s->qack & 1)
1882 printf(" bidir");
1883
1884 if (s->mss)
1885 printf(" mss:%d", s->mss);
1886 if (s->rcv_mss)
1887 printf(" rcvmss:%d", s->rcv_mss);
1888 if (s->advmss)
1889 printf(" advmss:%d", s->advmss);
1890 if (s->cwnd)
1891 printf(" cwnd:%u", s->cwnd);
1892 if (s->ssthresh)
1893 printf(" ssthresh:%d", s->ssthresh);
1894
1895 if (s->bytes_acked)
1896 printf(" bytes_acked:%llu", s->bytes_acked);
1897 if (s->bytes_received)
1898 printf(" bytes_received:%llu", s->bytes_received);
1899 if (s->segs_out)
1900 printf(" segs_out:%u", s->segs_out);
1901 if (s->segs_in)
1902 printf(" segs_in:%u", s->segs_in);
1903 if (s->data_segs_out)
1904 printf(" data_segs_out:%u", s->data_segs_out);
1905 if (s->data_segs_in)
1906 printf(" data_segs_in:%u", s->data_segs_in);
1907
1908 if (s->dctcp && s->dctcp->enabled) {
1909 struct dctcpstat *dctcp = s->dctcp;
1910
1911 printf(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
1912 dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
1913 dctcp->ab_tot);
1914 } else if (s->dctcp) {
1915 printf(" dctcp:fallback_mode");
1916 }
1917
1918 if (s->bbr_info) {
1919 __u64 bw;
1920
1921 bw = s->bbr_info->bbr_bw_hi;
1922 bw <<= 32;
1923 bw |= s->bbr_info->bbr_bw_lo;
1924
1925 printf(" bbr:(bw:%sbps,mrtt:%g",
1926 sprint_bw(b1, bw * 8.0),
1927 (double)s->bbr_info->bbr_min_rtt / 1000.0);
1928 if (s->bbr_info->bbr_pacing_gain)
1929 printf(",pacing_gain:%g",
1930 (double)s->bbr_info->bbr_pacing_gain / 256.0);
1931 if (s->bbr_info->bbr_cwnd_gain)
1932 printf(",cwnd_gain:%g",
1933 (double)s->bbr_info->bbr_cwnd_gain / 256.0);
1934 printf(")");
1935 }
1936
1937 if (s->send_bps)
1938 printf(" send %sbps", sprint_bw(b1, s->send_bps));
1939 if (s->lastsnd)
1940 printf(" lastsnd:%u", s->lastsnd);
1941 if (s->lastrcv)
1942 printf(" lastrcv:%u", s->lastrcv);
1943 if (s->lastack)
1944 printf(" lastack:%u", s->lastack);
1945
1946 if (s->pacing_rate) {
1947 printf(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
1948 if (s->pacing_rate_max)
1949 printf("/%sbps", sprint_bw(b1,
1950 s->pacing_rate_max));
1951 }
1952
1953 if (s->delivery_rate)
1954 printf(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
1955 if (s->app_limited)
1956 printf(" app_limited");
1957
1958 if (s->busy_time) {
1959 printf(" busy:%llums", s->busy_time / 1000);
1960 if (s->rwnd_limited)
1961 printf(" rwnd_limited:%llums(%.1f%%)",
1962 s->rwnd_limited / 1000,
1963 100.0 * s->rwnd_limited / s->busy_time);
1964 if (s->sndbuf_limited)
1965 printf(" sndbuf_limited:%llums(%.1f%%)",
1966 s->sndbuf_limited / 1000,
1967 100.0 * s->sndbuf_limited / s->busy_time);
1968 }
1969
1970 if (s->unacked)
1971 printf(" unacked:%u", s->unacked);
1972 if (s->retrans || s->retrans_total)
1973 printf(" retrans:%u/%u", s->retrans, s->retrans_total);
1974 if (s->lost)
1975 printf(" lost:%u", s->lost);
1976 if (s->sacked && s->ss.state != SS_LISTEN)
1977 printf(" sacked:%u", s->sacked);
1978 if (s->fackets)
1979 printf(" fackets:%u", s->fackets);
1980 if (s->reordering != 3)
1981 printf(" reordering:%d", s->reordering);
1982 if (s->rcv_rtt)
1983 printf(" rcv_rtt:%g", s->rcv_rtt);
1984 if (s->rcv_space)
1985 printf(" rcv_space:%d", s->rcv_space);
1986 if (s->not_sent)
1987 printf(" notsent:%u", s->not_sent);
1988 if (s->min_rtt)
1989 printf(" minrtt:%g", s->min_rtt);
1990 }
1991
1992 static void tcp_timer_print(struct tcpstat *s)
1993 {
1994 static const char * const tmr_name[] = {
1995 "off",
1996 "on",
1997 "keepalive",
1998 "timewait",
1999 "persist",
2000 "unknown"
2001 };
2002
2003 if (s->timer) {
2004 if (s->timer > 4)
2005 s->timer = 5;
2006 printf(" timer:(%s,%s,%d)",
2007 tmr_name[s->timer],
2008 print_ms_timer(s->timeout),
2009 s->retrans);
2010 }
2011 }
2012
2013 static void sctp_timer_print(struct tcpstat *s)
2014 {
2015 if (s->timer)
2016 printf(" timer:(T3_RTX,%s,%d)",
2017 print_ms_timer(s->timeout), s->retrans);
2018 }
2019
2020 static int tcp_show_line(char *line, const struct filter *f, int family)
2021 {
2022 int rto = 0, ato = 0;
2023 struct tcpstat s = {};
2024 char *loc, *rem, *data;
2025 char opt[256];
2026 int n;
2027 int hz = get_user_hz();
2028
2029 if (proc_inet_split_line(line, &loc, &rem, &data))
2030 return -1;
2031
2032 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2033
2034 if (!(f->states & (1 << state)))
2035 return 0;
2036
2037 proc_parse_inet_addr(loc, rem, family, &s.ss);
2038
2039 if (f->f && run_ssfilter(f->f, &s.ss) == 0)
2040 return 0;
2041
2042 opt[0] = 0;
2043 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
2044 &s.ss.state, &s.ss.wq, &s.ss.rq,
2045 &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
2046 &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
2047 &s.ssthresh, opt);
2048
2049 if (n < 17)
2050 opt[0] = 0;
2051
2052 if (n < 12) {
2053 rto = 0;
2054 s.cwnd = 2;
2055 s.ssthresh = -1;
2056 ato = s.qack = 0;
2057 }
2058
2059 s.retrans = s.timer != 1 ? s.probes : s.retrans;
2060 s.timeout = (s.timeout * 1000 + hz - 1) / hz;
2061 s.ato = (double)ato / hz;
2062 s.qack /= 2;
2063 s.rto = (double)rto;
2064 s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
2065 s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
2066 s.ss.type = IPPROTO_TCP;
2067
2068 inet_stats_print(&s.ss, false);
2069
2070 if (show_options)
2071 tcp_timer_print(&s);
2072
2073 if (show_details) {
2074 sock_details_print(&s.ss);
2075 if (opt[0])
2076 printf(" opt:\"%s\"", opt);
2077 }
2078
2079 if (show_tcpinfo)
2080 tcp_stats_print(&s);
2081
2082 printf("\n");
2083 return 0;
2084 }
2085
2086 static int generic_record_read(FILE *fp,
2087 int (*worker)(char*, const struct filter *, int),
2088 const struct filter *f, int fam)
2089 {
2090 char line[256];
2091
2092 /* skip header */
2093 if (fgets(line, sizeof(line), fp) == NULL)
2094 goto outerr;
2095
2096 while (fgets(line, sizeof(line), fp) != NULL) {
2097 int n = strlen(line);
2098
2099 if (n == 0 || line[n-1] != '\n') {
2100 errno = -EINVAL;
2101 return -1;
2102 }
2103 line[n-1] = 0;
2104
2105 if (worker(line, f, fam) < 0)
2106 return 0;
2107 }
2108 outerr:
2109
2110 return ferror(fp) ? -1 : 0;
2111 }
2112
2113 static void print_skmeminfo(struct rtattr *tb[], int attrtype)
2114 {
2115 const __u32 *skmeminfo;
2116
2117 if (!tb[attrtype]) {
2118 if (attrtype == INET_DIAG_SKMEMINFO) {
2119 if (!tb[INET_DIAG_MEMINFO])
2120 return;
2121
2122 const struct inet_diag_meminfo *minfo =
2123 RTA_DATA(tb[INET_DIAG_MEMINFO]);
2124
2125 printf(" mem:(r%u,w%u,f%u,t%u)",
2126 minfo->idiag_rmem,
2127 minfo->idiag_wmem,
2128 minfo->idiag_fmem,
2129 minfo->idiag_tmem);
2130 }
2131 return;
2132 }
2133
2134 skmeminfo = RTA_DATA(tb[attrtype]);
2135
2136 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
2137 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
2138 skmeminfo[SK_MEMINFO_RCVBUF],
2139 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
2140 skmeminfo[SK_MEMINFO_SNDBUF],
2141 skmeminfo[SK_MEMINFO_FWD_ALLOC],
2142 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
2143 skmeminfo[SK_MEMINFO_OPTMEM]);
2144
2145 if (RTA_PAYLOAD(tb[attrtype]) >=
2146 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
2147 printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
2148
2149 if (RTA_PAYLOAD(tb[attrtype]) >=
2150 (SK_MEMINFO_DROPS + 1) * sizeof(__u32))
2151 printf(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
2152
2153 printf(")");
2154 }
2155
2156 static void print_md5sig(struct tcp_diag_md5sig *sig)
2157 {
2158 printf("%s/%d=",
2159 format_host(sig->tcpm_family,
2160 sig->tcpm_family == AF_INET6 ? 16 : 4,
2161 &sig->tcpm_addr),
2162 sig->tcpm_prefixlen);
2163 print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
2164 }
2165
2166 #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
2167
2168 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2169 struct rtattr *tb[])
2170 {
2171 double rtt = 0;
2172 struct tcpstat s = {};
2173
2174 s.ss.state = r->idiag_state;
2175
2176 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2177
2178 if (tb[INET_DIAG_INFO]) {
2179 struct tcp_info *info;
2180 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2181
2182 /* workaround for older kernels with less fields */
2183 if (len < sizeof(*info)) {
2184 info = alloca(sizeof(*info));
2185 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2186 memset((char *)info + len, 0, sizeof(*info) - len);
2187 } else
2188 info = RTA_DATA(tb[INET_DIAG_INFO]);
2189
2190 if (show_options) {
2191 s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
2192 s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
2193 s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
2194 s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
2195 s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
2196 }
2197
2198 if (tb[INET_DIAG_CONG])
2199 strncpy(s.cong_alg,
2200 rta_getattr_str(tb[INET_DIAG_CONG]),
2201 sizeof(s.cong_alg) - 1);
2202
2203 if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
2204 s.has_wscale_opt = true;
2205 s.snd_wscale = info->tcpi_snd_wscale;
2206 s.rcv_wscale = info->tcpi_rcv_wscale;
2207 }
2208
2209 if (info->tcpi_rto && info->tcpi_rto != 3000000)
2210 s.rto = (double)info->tcpi_rto / 1000;
2211
2212 s.backoff = info->tcpi_backoff;
2213 s.rtt = (double)info->tcpi_rtt / 1000;
2214 s.rttvar = (double)info->tcpi_rttvar / 1000;
2215 s.ato = (double)info->tcpi_ato / 1000;
2216 s.mss = info->tcpi_snd_mss;
2217 s.rcv_mss = info->tcpi_rcv_mss;
2218 s.advmss = info->tcpi_advmss;
2219 s.rcv_space = info->tcpi_rcv_space;
2220 s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
2221 s.lastsnd = info->tcpi_last_data_sent;
2222 s.lastrcv = info->tcpi_last_data_recv;
2223 s.lastack = info->tcpi_last_ack_recv;
2224 s.unacked = info->tcpi_unacked;
2225 s.retrans = info->tcpi_retrans;
2226 s.retrans_total = info->tcpi_total_retrans;
2227 s.lost = info->tcpi_lost;
2228 s.sacked = info->tcpi_sacked;
2229 s.fackets = info->tcpi_fackets;
2230 s.reordering = info->tcpi_reordering;
2231 s.rcv_space = info->tcpi_rcv_space;
2232 s.cwnd = info->tcpi_snd_cwnd;
2233
2234 if (info->tcpi_snd_ssthresh < 0xFFFF)
2235 s.ssthresh = info->tcpi_snd_ssthresh;
2236
2237 rtt = (double) info->tcpi_rtt;
2238 if (tb[INET_DIAG_VEGASINFO]) {
2239 const struct tcpvegas_info *vinfo
2240 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
2241
2242 if (vinfo->tcpv_enabled &&
2243 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
2244 rtt = vinfo->tcpv_rtt;
2245 }
2246
2247 if (tb[INET_DIAG_DCTCPINFO]) {
2248 struct dctcpstat *dctcp = malloc(sizeof(struct
2249 dctcpstat));
2250
2251 const struct tcp_dctcp_info *dinfo
2252 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
2253
2254 dctcp->enabled = !!dinfo->dctcp_enabled;
2255 dctcp->ce_state = dinfo->dctcp_ce_state;
2256 dctcp->alpha = dinfo->dctcp_alpha;
2257 dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
2258 dctcp->ab_tot = dinfo->dctcp_ab_tot;
2259 s.dctcp = dctcp;
2260 }
2261
2262 if (tb[INET_DIAG_BBRINFO]) {
2263 const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
2264 int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
2265 sizeof(*s.bbr_info));
2266
2267 s.bbr_info = calloc(1, sizeof(*s.bbr_info));
2268 if (s.bbr_info && bbr_info)
2269 memcpy(s.bbr_info, bbr_info, len);
2270 }
2271
2272 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
2273 s.send_bps = (double) info->tcpi_snd_cwnd *
2274 (double)info->tcpi_snd_mss * 8000000. / rtt;
2275 }
2276
2277 if (info->tcpi_pacing_rate &&
2278 info->tcpi_pacing_rate != ~0ULL) {
2279 s.pacing_rate = info->tcpi_pacing_rate * 8.;
2280
2281 if (info->tcpi_max_pacing_rate &&
2282 info->tcpi_max_pacing_rate != ~0ULL)
2283 s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
2284 }
2285 s.bytes_acked = info->tcpi_bytes_acked;
2286 s.bytes_received = info->tcpi_bytes_received;
2287 s.segs_out = info->tcpi_segs_out;
2288 s.segs_in = info->tcpi_segs_in;
2289 s.data_segs_out = info->tcpi_data_segs_out;
2290 s.data_segs_in = info->tcpi_data_segs_in;
2291 s.not_sent = info->tcpi_notsent_bytes;
2292 if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
2293 s.min_rtt = (double) info->tcpi_min_rtt / 1000;
2294 s.delivery_rate = info->tcpi_delivery_rate * 8.;
2295 s.app_limited = info->tcpi_delivery_rate_app_limited;
2296 s.busy_time = info->tcpi_busy_time;
2297 s.rwnd_limited = info->tcpi_rwnd_limited;
2298 s.sndbuf_limited = info->tcpi_sndbuf_limited;
2299 tcp_stats_print(&s);
2300 free(s.dctcp);
2301 free(s.bbr_info);
2302 }
2303 if (tb[INET_DIAG_MD5SIG]) {
2304 struct tcp_diag_md5sig *sig = RTA_DATA(tb[INET_DIAG_MD5SIG]);
2305 int len = RTA_PAYLOAD(tb[INET_DIAG_MD5SIG]);
2306
2307 printf(" md5keys:");
2308 print_md5sig(sig++);
2309 for (len -= sizeof(*sig); len > 0; len -= sizeof(*sig)) {
2310 printf(",");
2311 print_md5sig(sig++);
2312 }
2313 }
2314 }
2315
2316 static const char *format_host_sa(struct sockaddr_storage *sa)
2317 {
2318 union {
2319 struct sockaddr_in sin;
2320 struct sockaddr_in6 sin6;
2321 } *saddr = (void *)sa;
2322
2323 switch (sa->ss_family) {
2324 case AF_INET:
2325 return format_host(AF_INET, 4, &saddr->sin.sin_addr);
2326 case AF_INET6:
2327 return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
2328 default:
2329 return "";
2330 }
2331 }
2332
2333 static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2334 struct rtattr *tb[])
2335 {
2336 struct sockaddr_storage *sa;
2337 int len;
2338
2339 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2340
2341 if (tb[INET_DIAG_LOCALS]) {
2342 len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
2343 sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
2344
2345 printf("locals:%s", format_host_sa(sa));
2346 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2347 printf(",%s", format_host_sa(sa));
2348
2349 }
2350 if (tb[INET_DIAG_PEERS]) {
2351 len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
2352 sa = RTA_DATA(tb[INET_DIAG_PEERS]);
2353
2354 printf(" peers:%s", format_host_sa(sa));
2355 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2356 printf(",%s", format_host_sa(sa));
2357 }
2358 if (tb[INET_DIAG_INFO]) {
2359 struct sctp_info *info;
2360 len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2361
2362 /* workaround for older kernels with less fields */
2363 if (len < sizeof(*info)) {
2364 info = alloca(sizeof(*info));
2365 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2366 memset((char *)info + len, 0, sizeof(*info) - len);
2367 } else
2368 info = RTA_DATA(tb[INET_DIAG_INFO]);
2369
2370 sctp_stats_print(info);
2371 }
2372 }
2373
2374 static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
2375 {
2376 struct rtattr *tb[INET_DIAG_MAX+1];
2377 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2378
2379 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2380 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2381
2382 s->state = r->idiag_state;
2383 s->local.family = s->remote.family = r->idiag_family;
2384 s->lport = ntohs(r->id.idiag_sport);
2385 s->rport = ntohs(r->id.idiag_dport);
2386 s->wq = r->idiag_wqueue;
2387 s->rq = r->idiag_rqueue;
2388 s->ino = r->idiag_inode;
2389 s->uid = r->idiag_uid;
2390 s->iface = r->id.idiag_if;
2391 s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
2392
2393 s->mark = 0;
2394 if (tb[INET_DIAG_MARK])
2395 s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]);
2396 if (tb[INET_DIAG_PROTOCOL])
2397 s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2398 else
2399 s->raw_prot = 0;
2400
2401 if (s->local.family == AF_INET)
2402 s->local.bytelen = s->remote.bytelen = 4;
2403 else
2404 s->local.bytelen = s->remote.bytelen = 16;
2405
2406 memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
2407 memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
2408 }
2409
2410 static int inet_show_sock(struct nlmsghdr *nlh,
2411 struct sockstat *s)
2412 {
2413 struct rtattr *tb[INET_DIAG_MAX+1];
2414 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2415 unsigned char v6only = 0;
2416
2417 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2418 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2419
2420 if (tb[INET_DIAG_PROTOCOL])
2421 s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2422
2423 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
2424 v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]);
2425
2426 inet_stats_print(s, v6only);
2427
2428 if (show_options) {
2429 struct tcpstat t = {};
2430
2431 t.timer = r->idiag_timer;
2432 t.timeout = r->idiag_expires;
2433 t.retrans = r->idiag_retrans;
2434 if (s->type == IPPROTO_SCTP)
2435 sctp_timer_print(&t);
2436 else
2437 tcp_timer_print(&t);
2438 }
2439
2440 if (show_details) {
2441 sock_details_print(s);
2442 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
2443 printf(" v6only:%u", v6only);
2444
2445 if (tb[INET_DIAG_SHUTDOWN]) {
2446 unsigned char mask;
2447
2448 mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]);
2449 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2450 }
2451 }
2452
2453 if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
2454 printf("\n\t");
2455 if (s->type == IPPROTO_SCTP)
2456 sctp_show_info(nlh, r, tb);
2457 else
2458 tcp_show_info(nlh, r, tb);
2459 }
2460 sctp_ino = s->ino;
2461
2462 printf("\n");
2463 return 0;
2464 }
2465
2466 static int tcpdiag_send(int fd, int protocol, struct filter *f)
2467 {
2468 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2469 struct {
2470 struct nlmsghdr nlh;
2471 struct inet_diag_req r;
2472 } req = {
2473 .nlh.nlmsg_len = sizeof(req),
2474 .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
2475 .nlh.nlmsg_seq = MAGIC_SEQ,
2476 .r.idiag_family = AF_INET,
2477 .r.idiag_states = f->states,
2478 };
2479 char *bc = NULL;
2480 int bclen;
2481 struct msghdr msg;
2482 struct rtattr rta;
2483 struct iovec iov[3];
2484 int iovlen = 1;
2485
2486 if (protocol == IPPROTO_UDP)
2487 return -1;
2488
2489 if (protocol == IPPROTO_TCP)
2490 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
2491 else
2492 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
2493 if (show_mem) {
2494 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2495 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2496 }
2497
2498 if (show_tcpinfo) {
2499 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2500 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2501 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2502 }
2503
2504 iov[0] = (struct iovec){
2505 .iov_base = &req,
2506 .iov_len = sizeof(req)
2507 };
2508 if (f->f) {
2509 bclen = ssfilter_bytecompile(f->f, &bc);
2510 if (bclen) {
2511 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2512 rta.rta_len = RTA_LENGTH(bclen);
2513 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2514 iov[2] = (struct iovec){ bc, bclen };
2515 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2516 iovlen = 3;
2517 }
2518 }
2519
2520 msg = (struct msghdr) {
2521 .msg_name = (void *)&nladdr,
2522 .msg_namelen = sizeof(nladdr),
2523 .msg_iov = iov,
2524 .msg_iovlen = iovlen,
2525 };
2526
2527 if (sendmsg(fd, &msg, 0) < 0) {
2528 close(fd);
2529 return -1;
2530 }
2531
2532 return 0;
2533 }
2534
2535 static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
2536 {
2537 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2538 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2539 char *bc = NULL;
2540 int bclen;
2541 struct msghdr msg;
2542 struct rtattr rta;
2543 struct iovec iov[3];
2544 int iovlen = 1;
2545
2546 if (family == PF_UNSPEC)
2547 return tcpdiag_send(fd, protocol, f);
2548
2549 memset(&req.r, 0, sizeof(req.r));
2550 req.r.sdiag_family = family;
2551 req.r.sdiag_protocol = protocol;
2552 req.r.idiag_states = f->states;
2553 if (show_mem) {
2554 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2555 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2556 }
2557
2558 if (show_tcpinfo) {
2559 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2560 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2561 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2562 }
2563
2564 iov[0] = (struct iovec){
2565 .iov_base = &req,
2566 .iov_len = sizeof(req)
2567 };
2568 if (f->f) {
2569 bclen = ssfilter_bytecompile(f->f, &bc);
2570 if (bclen) {
2571 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2572 rta.rta_len = RTA_LENGTH(bclen);
2573 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2574 iov[2] = (struct iovec){ bc, bclen };
2575 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2576 iovlen = 3;
2577 }
2578 }
2579
2580 msg = (struct msghdr) {
2581 .msg_name = (void *)&nladdr,
2582 .msg_namelen = sizeof(nladdr),
2583 .msg_iov = iov,
2584 .msg_iovlen = iovlen,
2585 };
2586
2587 if (sendmsg(fd, &msg, 0) < 0) {
2588 close(fd);
2589 return -1;
2590 }
2591
2592 return 0;
2593 }
2594
2595 struct inet_diag_arg {
2596 struct filter *f;
2597 int protocol;
2598 struct rtnl_handle *rth;
2599 };
2600
2601 static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
2602 {
2603 struct inet_diag_msg *d = NLMSG_DATA(h);
2604 struct inet_diag_arg *diag_arg = arg;
2605 struct rtnl_handle *rth = diag_arg->rth;
2606
2607 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2608
2609 req.nlh.nlmsg_type = SOCK_DESTROY;
2610 req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
2611 req.nlh.nlmsg_seq = ++rth->seq;
2612 req.r.sdiag_family = d->idiag_family;
2613 req.r.sdiag_protocol = diag_arg->protocol;
2614 req.r.id = d->id;
2615
2616 if (diag_arg->protocol == IPPROTO_RAW) {
2617 struct inet_diag_req_raw *raw = (void *)&req.r;
2618
2619 BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
2620 raw->sdiag_raw_protocol = s->raw_prot;
2621 }
2622
2623 return rtnl_talk(rth, &req.nlh, NULL, 0);
2624 }
2625
2626 static int show_one_inet_sock(const struct sockaddr_nl *addr,
2627 struct nlmsghdr *h, void *arg)
2628 {
2629 int err;
2630 struct inet_diag_arg *diag_arg = arg;
2631 struct inet_diag_msg *r = NLMSG_DATA(h);
2632 struct sockstat s = {};
2633
2634 if (!(diag_arg->f->families & (1 << r->idiag_family)))
2635 return 0;
2636
2637 parse_diag_msg(h, &s);
2638 s.type = diag_arg->protocol;
2639
2640 if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
2641 return 0;
2642
2643 if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
2644 if (errno == EOPNOTSUPP || errno == ENOENT) {
2645 /* Socket can't be closed, or is already closed. */
2646 return 0;
2647 } else {
2648 perror("SOCK_DESTROY answers");
2649 return -1;
2650 }
2651 }
2652
2653 err = inet_show_sock(h, &s);
2654 if (err < 0)
2655 return err;
2656
2657 return 0;
2658 }
2659
2660 static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
2661 {
2662 int err = 0;
2663 struct rtnl_handle rth, rth2;
2664 int family = PF_INET;
2665 struct inet_diag_arg arg = { .f = f, .protocol = protocol };
2666
2667 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
2668 return -1;
2669
2670 if (f->kill) {
2671 if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
2672 rtnl_close(&rth);
2673 return -1;
2674 }
2675 arg.rth = &rth2;
2676 }
2677
2678 rth.dump = MAGIC_SEQ;
2679 rth.dump_fp = dump_fp;
2680 if (preferred_family == PF_INET6)
2681 family = PF_INET6;
2682
2683 again:
2684 if ((err = sockdiag_send(family, rth.fd, protocol, f)))
2685 goto Exit;
2686
2687 if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
2688 if (family != PF_UNSPEC) {
2689 family = PF_UNSPEC;
2690 goto again;
2691 }
2692 goto Exit;
2693 }
2694 if (family == PF_INET && preferred_family != PF_INET) {
2695 family = PF_INET6;
2696 goto again;
2697 }
2698
2699 Exit:
2700 rtnl_close(&rth);
2701 if (arg.rth)
2702 rtnl_close(arg.rth);
2703 return err;
2704 }
2705
2706 static int tcp_show_netlink_file(struct filter *f)
2707 {
2708 FILE *fp;
2709 char buf[16384];
2710 int err = -1;
2711
2712 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
2713 perror("fopen($TCPDIAG_FILE)");
2714 return err;
2715 }
2716
2717 while (1) {
2718 int status, err2;
2719 struct nlmsghdr *h = (struct nlmsghdr *)buf;
2720 struct sockstat s = {};
2721
2722 status = fread(buf, 1, sizeof(*h), fp);
2723 if (status < 0) {
2724 perror("Reading header from $TCPDIAG_FILE");
2725 break;
2726 }
2727 if (status != sizeof(*h)) {
2728 perror("Unexpected EOF reading $TCPDIAG_FILE");
2729 break;
2730 }
2731
2732 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
2733
2734 if (status < 0) {
2735 perror("Reading $TCPDIAG_FILE");
2736 break;
2737 }
2738 if (status + sizeof(*h) < h->nlmsg_len) {
2739 perror("Unexpected EOF reading $TCPDIAG_FILE");
2740 break;
2741 }
2742
2743 /* The only legal exit point */
2744 if (h->nlmsg_type == NLMSG_DONE) {
2745 err = 0;
2746 break;
2747 }
2748
2749 if (h->nlmsg_type == NLMSG_ERROR) {
2750 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
2751
2752 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2753 fprintf(stderr, "ERROR truncated\n");
2754 } else {
2755 errno = -err->error;
2756 perror("TCPDIAG answered");
2757 }
2758 break;
2759 }
2760
2761 parse_diag_msg(h, &s);
2762 s.type = IPPROTO_TCP;
2763
2764 if (f && f->f && run_ssfilter(f->f, &s) == 0)
2765 continue;
2766
2767 err2 = inet_show_sock(h, &s);
2768 if (err2 < 0) {
2769 err = err2;
2770 break;
2771 }
2772 }
2773
2774 fclose(fp);
2775 return err;
2776 }
2777
2778 static int tcp_show(struct filter *f)
2779 {
2780 FILE *fp = NULL;
2781 char *buf = NULL;
2782 int bufsize = 64*1024;
2783
2784 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2785 return 0;
2786
2787 dg_proto = TCP_PROTO;
2788
2789 if (getenv("TCPDIAG_FILE"))
2790 return tcp_show_netlink_file(f);
2791
2792 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
2793 && inet_show_netlink(f, NULL, IPPROTO_TCP) == 0)
2794 return 0;
2795
2796 /* Sigh... We have to parse /proc/net/tcp... */
2797
2798
2799 /* Estimate amount of sockets and try to allocate
2800 * huge buffer to read all the table at one read.
2801 * Limit it by 16MB though. The assumption is: as soon as
2802 * kernel was able to hold information about N connections,
2803 * it is able to give us some memory for snapshot.
2804 */
2805 if (1) {
2806 get_slabstat(&slabstat);
2807
2808 int guess = slabstat.socks+slabstat.tcp_syns;
2809
2810 if (f->states&(1<<SS_TIME_WAIT))
2811 guess += slabstat.tcp_tws;
2812 if (guess > (16*1024*1024)/128)
2813 guess = (16*1024*1024)/128;
2814 guess *= 128;
2815 if (guess > bufsize)
2816 bufsize = guess;
2817 }
2818 while (bufsize >= 64*1024) {
2819 if ((buf = malloc(bufsize)) != NULL)
2820 break;
2821 bufsize /= 2;
2822 }
2823 if (buf == NULL) {
2824 errno = ENOMEM;
2825 return -1;
2826 }
2827
2828 if (f->families & (1<<AF_INET)) {
2829 if ((fp = net_tcp_open()) == NULL)
2830 goto outerr;
2831
2832 setbuffer(fp, buf, bufsize);
2833 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
2834 goto outerr;
2835 fclose(fp);
2836 }
2837
2838 if ((f->families & (1<<AF_INET6)) &&
2839 (fp = net_tcp6_open()) != NULL) {
2840 setbuffer(fp, buf, bufsize);
2841 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
2842 goto outerr;
2843 fclose(fp);
2844 }
2845
2846 free(buf);
2847 return 0;
2848
2849 outerr:
2850 do {
2851 int saved_errno = errno;
2852
2853 free(buf);
2854 if (fp)
2855 fclose(fp);
2856 errno = saved_errno;
2857 return -1;
2858 } while (0);
2859 }
2860
2861 static int dccp_show(struct filter *f)
2862 {
2863 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2864 return 0;
2865
2866 if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT")
2867 && inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0)
2868 return 0;
2869
2870 return 0;
2871 }
2872
2873 static int sctp_show(struct filter *f)
2874 {
2875 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2876 return 0;
2877
2878 if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
2879 && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
2880 return 0;
2881
2882 return 0;
2883 }
2884
2885 static int dgram_show_line(char *line, const struct filter *f, int family)
2886 {
2887 struct sockstat s = {};
2888 char *loc, *rem, *data;
2889 char opt[256];
2890 int n;
2891
2892 if (proc_inet_split_line(line, &loc, &rem, &data))
2893 return -1;
2894
2895 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2896
2897 if (!(f->states & (1 << state)))
2898 return 0;
2899
2900 proc_parse_inet_addr(loc, rem, family, &s);
2901
2902 if (f->f && run_ssfilter(f->f, &s) == 0)
2903 return 0;
2904
2905 opt[0] = 0;
2906 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
2907 &s.state, &s.wq, &s.rq,
2908 &s.uid, &s.ino,
2909 &s.refcnt, &s.sk, opt);
2910
2911 if (n < 9)
2912 opt[0] = 0;
2913
2914 s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
2915 inet_stats_print(&s, false);
2916
2917 if (show_details && opt[0])
2918 printf(" opt:\"%s\"", opt);
2919
2920 printf("\n");
2921 return 0;
2922 }
2923
2924 static int udp_show(struct filter *f)
2925 {
2926 FILE *fp = NULL;
2927
2928 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2929 return 0;
2930
2931 dg_proto = UDP_PROTO;
2932
2933 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
2934 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
2935 return 0;
2936
2937 if (f->families&(1<<AF_INET)) {
2938 if ((fp = net_udp_open()) == NULL)
2939 goto outerr;
2940 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2941 goto outerr;
2942 fclose(fp);
2943 }
2944
2945 if ((f->families&(1<<AF_INET6)) &&
2946 (fp = net_udp6_open()) != NULL) {
2947 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2948 goto outerr;
2949 fclose(fp);
2950 }
2951 return 0;
2952
2953 outerr:
2954 do {
2955 int saved_errno = errno;
2956
2957 if (fp)
2958 fclose(fp);
2959 errno = saved_errno;
2960 return -1;
2961 } while (0);
2962 }
2963
2964 static int raw_show(struct filter *f)
2965 {
2966 FILE *fp = NULL;
2967
2968 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2969 return 0;
2970
2971 dg_proto = RAW_PROTO;
2972
2973 if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
2974 inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
2975 return 0;
2976
2977 if (f->families&(1<<AF_INET)) {
2978 if ((fp = net_raw_open()) == NULL)
2979 goto outerr;
2980 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2981 goto outerr;
2982 fclose(fp);
2983 }
2984
2985 if ((f->families&(1<<AF_INET6)) &&
2986 (fp = net_raw6_open()) != NULL) {
2987 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2988 goto outerr;
2989 fclose(fp);
2990 }
2991 return 0;
2992
2993 outerr:
2994 do {
2995 int saved_errno = errno;
2996
2997 if (fp)
2998 fclose(fp);
2999 errno = saved_errno;
3000 return -1;
3001 } while (0);
3002 }
3003
3004 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
3005
3006 static void unix_list_drop_first(struct sockstat **list)
3007 {
3008 struct sockstat *s = *list;
3009
3010 (*list) = (*list)->next;
3011 free(s->name);
3012 free(s);
3013 }
3014
3015 static bool unix_type_skip(struct sockstat *s, struct filter *f)
3016 {
3017 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
3018 return true;
3019 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
3020 return true;
3021 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
3022 return true;
3023 return false;
3024 }
3025
3026 static void unix_stats_print(struct sockstat *s, struct filter *f)
3027 {
3028 char port_name[30] = {};
3029
3030 sock_state_print(s);
3031
3032 sock_addr_print(s->name ?: "*", " ",
3033 int_to_str(s->lport, port_name), NULL);
3034 sock_addr_print(s->peer_name ?: "*", " ",
3035 int_to_str(s->rport, port_name), NULL);
3036
3037 proc_ctx_print(s);
3038 }
3039
3040 static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
3041 void *arg)
3042 {
3043 struct filter *f = (struct filter *)arg;
3044 struct unix_diag_msg *r = NLMSG_DATA(nlh);
3045 struct rtattr *tb[UNIX_DIAG_MAX+1];
3046 char name[128];
3047 struct sockstat stat = { .name = "*", .peer_name = "*" };
3048
3049 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
3050 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3051
3052 stat.type = r->udiag_type;
3053 stat.state = r->udiag_state;
3054 stat.ino = stat.lport = r->udiag_ino;
3055 stat.local.family = stat.remote.family = AF_UNIX;
3056
3057 if (unix_type_skip(&stat, f))
3058 return 0;
3059
3060 if (tb[UNIX_DIAG_RQLEN]) {
3061 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
3062
3063 stat.rq = rql->udiag_rqueue;
3064 stat.wq = rql->udiag_wqueue;
3065 }
3066 if (tb[UNIX_DIAG_NAME]) {
3067 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
3068
3069 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
3070 name[len] = '\0';
3071 if (name[0] == '\0') {
3072 int i;
3073 for (i = 0; i < len; i++)
3074 if (name[i] == '\0')
3075 name[i] = '@';
3076 }
3077 stat.name = &name[0];
3078 memcpy(stat.local.data, &stat.name, sizeof(stat.name));
3079 }
3080 if (tb[UNIX_DIAG_PEER])
3081 stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
3082
3083 if (f->f && run_ssfilter(f->f, &stat) == 0)
3084 return 0;
3085
3086 unix_stats_print(&stat, f);
3087
3088 if (show_mem)
3089 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
3090 if (show_details) {
3091 if (tb[UNIX_DIAG_SHUTDOWN]) {
3092 unsigned char mask;
3093
3094 mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]);
3095 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3096 }
3097 }
3098 printf("\n");
3099
3100 return 0;
3101 }
3102
3103 static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
3104 size_t size, rtnl_filter_t show_one_sock)
3105 {
3106 int ret = -1;
3107 struct rtnl_handle rth;
3108
3109 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3110 return -1;
3111
3112 rth.dump = MAGIC_SEQ;
3113
3114 if (rtnl_send(&rth, req, size) < 0)
3115 goto Exit;
3116
3117 if (rtnl_dump_filter(&rth, show_one_sock, f))
3118 goto Exit;
3119
3120 ret = 0;
3121 Exit:
3122 rtnl_close(&rth);
3123 return ret;
3124 }
3125
3126 static int unix_show_netlink(struct filter *f)
3127 {
3128 DIAG_REQUEST(req, struct unix_diag_req r);
3129
3130 req.r.sdiag_family = AF_UNIX;
3131 req.r.udiag_states = f->states;
3132 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
3133 if (show_mem)
3134 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
3135
3136 return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
3137 }
3138
3139 static int unix_show(struct filter *f)
3140 {
3141 FILE *fp;
3142 char buf[256];
3143 char name[128];
3144 int newformat = 0;
3145 int cnt;
3146 struct sockstat *list = NULL;
3147 const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
3148 SS_ESTABLISHED, SS_CLOSING };
3149
3150 if (!filter_af_get(f, AF_UNIX))
3151 return 0;
3152
3153 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
3154 && unix_show_netlink(f) == 0)
3155 return 0;
3156
3157 if ((fp = net_unix_open()) == NULL)
3158 return -1;
3159 if (!fgets(buf, sizeof(buf), fp)) {
3160 fclose(fp);
3161 return -1;
3162 }
3163
3164 if (memcmp(buf, "Peer", 4) == 0)
3165 newformat = 1;
3166 cnt = 0;
3167
3168 while (fgets(buf, sizeof(buf), fp)) {
3169 struct sockstat *u, **insp;
3170 int flags;
3171
3172 if (!(u = calloc(1, sizeof(*u))))
3173 break;
3174
3175 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
3176 &u->rport, &u->rq, &u->wq, &flags, &u->type,
3177 &u->state, &u->ino, name) < 8)
3178 name[0] = 0;
3179
3180 u->lport = u->ino;
3181 u->local.family = u->remote.family = AF_UNIX;
3182
3183 if (flags & (1 << 16)) {
3184 u->state = SS_LISTEN;
3185 } else if (u->state > 0 &&
3186 u->state <= ARRAY_SIZE(unix_state_map)) {
3187 u->state = unix_state_map[u->state-1];
3188 if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
3189 u->state = SS_ESTABLISHED;
3190 }
3191 if (unix_type_skip(u, f) ||
3192 !(f->states & (1 << u->state))) {
3193 free(u);
3194 continue;
3195 }
3196
3197 if (!newformat) {
3198 u->rport = 0;
3199 u->rq = 0;
3200 u->wq = 0;
3201 }
3202
3203 if (name[0]) {
3204 u->name = strdup(name);
3205 if (!u->name) {
3206 free(u);
3207 break;
3208 }
3209 }
3210
3211 if (u->rport) {
3212 struct sockstat *p;
3213
3214 for (p = list; p; p = p->next) {
3215 if (u->rport == p->lport)
3216 break;
3217 }
3218 if (!p)
3219 u->peer_name = "?";
3220 else
3221 u->peer_name = p->name ? : "*";
3222 }
3223
3224 if (f->f) {
3225 struct sockstat st = {
3226 .local.family = AF_UNIX,
3227 .remote.family = AF_UNIX,
3228 };
3229
3230 memcpy(st.local.data, &u->name, sizeof(u->name));
3231 if (strcmp(u->peer_name, "*"))
3232 memcpy(st.remote.data, &u->peer_name,
3233 sizeof(u->peer_name));
3234 if (run_ssfilter(f->f, &st) == 0) {
3235 free(u->name);
3236 free(u);
3237 continue;
3238 }
3239 }
3240
3241 insp = &list;
3242 while (*insp) {
3243 if (u->type < (*insp)->type ||
3244 (u->type == (*insp)->type &&
3245 u->ino < (*insp)->ino))
3246 break;
3247 insp = &(*insp)->next;
3248 }
3249 u->next = *insp;
3250 *insp = u;
3251
3252 if (++cnt > MAX_UNIX_REMEMBER) {
3253 while (list) {
3254 unix_stats_print(list, f);
3255 printf("\n");
3256
3257 unix_list_drop_first(&list);
3258 }
3259 cnt = 0;
3260 }
3261 }
3262 fclose(fp);
3263 while (list) {
3264 unix_stats_print(list, f);
3265 printf("\n");
3266
3267 unix_list_drop_first(&list);
3268 }
3269
3270 return 0;
3271 }
3272
3273 static int packet_stats_print(struct sockstat *s, const struct filter *f)
3274 {
3275 const char *addr, *port;
3276 char ll_name[16];
3277
3278 s->local.family = s->remote.family = AF_PACKET;
3279
3280 if (f->f) {
3281 s->local.data[0] = s->prot;
3282 if (run_ssfilter(f->f, s) == 0)
3283 return 1;
3284 }
3285
3286 sock_state_print(s);
3287
3288 if (s->prot == 3)
3289 addr = "*";
3290 else
3291 addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
3292
3293 if (s->iface == 0)
3294 port = "*";
3295 else
3296 port = xll_index_to_name(s->iface);
3297
3298 sock_addr_print(addr, ":", port, NULL);
3299 sock_addr_print("", "*", "", NULL);
3300
3301 proc_ctx_print(s);
3302
3303 if (show_details)
3304 sock_details_print(s);
3305
3306 return 0;
3307 }
3308
3309 static void packet_show_ring(struct packet_diag_ring *ring)
3310 {
3311 printf("blk_size:%d", ring->pdr_block_size);
3312 printf(",blk_nr:%d", ring->pdr_block_nr);
3313 printf(",frm_size:%d", ring->pdr_frame_size);
3314 printf(",frm_nr:%d", ring->pdr_frame_nr);
3315 printf(",tmo:%d", ring->pdr_retire_tmo);
3316 printf(",features:0x%x", ring->pdr_features);
3317 }
3318
3319 static int packet_show_sock(const struct sockaddr_nl *addr,
3320 struct nlmsghdr *nlh, void *arg)
3321 {
3322 const struct filter *f = arg;
3323 struct packet_diag_msg *r = NLMSG_DATA(nlh);
3324 struct packet_diag_info *pinfo = NULL;
3325 struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
3326 struct rtattr *tb[PACKET_DIAG_MAX+1];
3327 struct sockstat stat = {};
3328 uint32_t fanout = 0;
3329 bool has_fanout = false;
3330
3331 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
3332 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3333
3334 /* use /proc/net/packet if all info are not available */
3335 if (!tb[PACKET_DIAG_MEMINFO])
3336 return -1;
3337
3338 stat.type = r->pdiag_type;
3339 stat.prot = r->pdiag_num;
3340 stat.ino = r->pdiag_ino;
3341 stat.state = SS_CLOSE;
3342 stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
3343
3344 if (tb[PACKET_DIAG_MEMINFO]) {
3345 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
3346
3347 stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3348 }
3349
3350 if (tb[PACKET_DIAG_INFO]) {
3351 pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
3352 stat.lport = stat.iface = pinfo->pdi_index;
3353 }
3354
3355 if (tb[PACKET_DIAG_UID])
3356 stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]);
3357
3358 if (tb[PACKET_DIAG_RX_RING])
3359 ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
3360
3361 if (tb[PACKET_DIAG_TX_RING])
3362 ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
3363
3364 if (tb[PACKET_DIAG_FANOUT]) {
3365 has_fanout = true;
3366 fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]);
3367 }
3368
3369 if (packet_stats_print(&stat, f))
3370 return 0;
3371
3372 if (show_details) {
3373 if (pinfo) {
3374 printf("\n\tver:%d", pinfo->pdi_version);
3375 printf(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
3376 printf(" flags( ");
3377 if (pinfo->pdi_flags & PDI_RUNNING)
3378 printf("running");
3379 if (pinfo->pdi_flags & PDI_AUXDATA)
3380 printf(" auxdata");
3381 if (pinfo->pdi_flags & PDI_ORIGDEV)
3382 printf(" origdev");
3383 if (pinfo->pdi_flags & PDI_VNETHDR)
3384 printf(" vnethdr");
3385 if (pinfo->pdi_flags & PDI_LOSS)
3386 printf(" loss");
3387 if (!pinfo->pdi_flags)
3388 printf("0");
3389 printf(" )");
3390 }
3391 if (ring_rx) {
3392 printf("\n\tring_rx(");
3393 packet_show_ring(ring_rx);
3394 printf(")");
3395 }
3396 if (ring_tx) {
3397 printf("\n\tring_tx(");
3398 packet_show_ring(ring_tx);
3399 printf(")");
3400 }
3401 if (has_fanout) {
3402 uint16_t type = (fanout >> 16) & 0xffff;
3403
3404 printf("\n\tfanout(");
3405 printf("id:%d,", fanout & 0xffff);
3406 printf("type:");
3407
3408 if (type == 0)
3409 printf("hash");
3410 else if (type == 1)
3411 printf("lb");
3412 else if (type == 2)
3413 printf("cpu");
3414 else if (type == 3)
3415 printf("roll");
3416 else if (type == 4)
3417 printf("random");
3418 else if (type == 5)
3419 printf("qm");
3420 else
3421 printf("0x%x", type);
3422
3423 printf(")");
3424 }
3425 }
3426
3427 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
3428 struct sock_filter *fil =
3429 RTA_DATA(tb[PACKET_DIAG_FILTER]);
3430 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
3431 sizeof(struct sock_filter);
3432
3433 printf("\n\tbpf filter (%d): ", num);
3434 while (num) {
3435 printf(" 0x%02x %u %u %u,",
3436 fil->code, fil->jt, fil->jf, fil->k);
3437 num--;
3438 fil++;
3439 }
3440 }
3441 printf("\n");
3442 return 0;
3443 }
3444
3445 static int packet_show_netlink(struct filter *f)
3446 {
3447 DIAG_REQUEST(req, struct packet_diag_req r);
3448
3449 req.r.sdiag_family = AF_PACKET;
3450 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
3451 PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
3452
3453 return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
3454 }
3455
3456 static int packet_show_line(char *buf, const struct filter *f, int fam)
3457 {
3458 unsigned long long sk;
3459 struct sockstat stat = {};
3460 int type, prot, iface, state, rq, uid, ino;
3461
3462 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
3463 &sk,
3464 &type, &prot, &iface, &state,
3465 &rq, &uid, &ino);
3466
3467 if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
3468 return 0;
3469 if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
3470 return 0;
3471
3472 stat.type = type;
3473 stat.prot = prot;
3474 stat.lport = stat.iface = iface;
3475 stat.state = state;
3476 stat.rq = rq;
3477 stat.uid = uid;
3478 stat.ino = ino;
3479 stat.state = SS_CLOSE;
3480
3481 if (packet_stats_print(&stat, f))
3482 return 0;
3483
3484 printf("\n");
3485 return 0;
3486 }
3487
3488 static int packet_show(struct filter *f)
3489 {
3490 FILE *fp;
3491 int rc = 0;
3492
3493 if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
3494 return 0;
3495
3496 if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
3497 packet_show_netlink(f) == 0)
3498 return 0;
3499
3500 if ((fp = net_packet_open()) == NULL)
3501 return -1;
3502 if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
3503 rc = -1;
3504
3505 fclose(fp);
3506 return rc;
3507 }
3508
3509 static int netlink_show_one(struct filter *f,
3510 int prot, int pid, unsigned int groups,
3511 int state, int dst_pid, unsigned int dst_group,
3512 int rq, int wq,
3513 unsigned long long sk, unsigned long long cb)
3514 {
3515 struct sockstat st = {
3516 .state = SS_CLOSE,
3517 .rq = rq,
3518 .wq = wq,
3519 .local.family = AF_NETLINK,
3520 .remote.family = AF_NETLINK,
3521 };
3522
3523 SPRINT_BUF(prot_buf) = {};
3524 const char *prot_name;
3525 char procname[64] = {};
3526
3527 if (f->f) {
3528 st.rport = -1;
3529 st.lport = pid;
3530 st.local.data[0] = prot;
3531 if (run_ssfilter(f->f, &st) == 0)
3532 return 1;
3533 }
3534
3535 sock_state_print(&st);
3536
3537 if (resolve_services)
3538 prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
3539 else
3540 prot_name = int_to_str(prot, prot_buf);
3541
3542 if (pid == -1) {
3543 procname[0] = '*';
3544 } else if (resolve_services) {
3545 int done = 0;
3546
3547 if (!pid) {
3548 done = 1;
3549 strncpy(procname, "kernel", 6);
3550 } else if (pid > 0) {
3551 FILE *fp;
3552
3553 snprintf(procname, sizeof(procname), "%s/%d/stat",
3554 getenv("PROC_ROOT") ? : "/proc", pid);
3555 if ((fp = fopen(procname, "r")) != NULL) {
3556 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
3557 snprintf(procname+strlen(procname),
3558 sizeof(procname)-strlen(procname),
3559 "/%d", pid);
3560 done = 1;
3561 }
3562 fclose(fp);
3563 }
3564 }
3565 if (!done)
3566 int_to_str(pid, procname);
3567 } else {
3568 int_to_str(pid, procname);
3569 }
3570
3571 sock_addr_print(prot_name, ":", procname, NULL);
3572
3573 if (state == NETLINK_CONNECTED) {
3574 char dst_group_buf[30];
3575 char dst_pid_buf[30];
3576
3577 sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
3578 int_to_str(dst_pid, dst_pid_buf), NULL);
3579 } else {
3580 sock_addr_print("", "*", "", NULL);
3581 }
3582
3583 char *pid_context = NULL;
3584
3585 if (show_proc_ctx) {
3586 /* The pid value will either be:
3587 * 0 if destination kernel - show kernel initial context.
3588 * A valid process pid - use getpidcon.
3589 * A unique value allocated by the kernel or netlink user
3590 * to the process - show context as "not available".
3591 */
3592 if (!pid)
3593 security_get_initial_context("kernel", &pid_context);
3594 else if (pid > 0)
3595 getpidcon(pid, &pid_context);
3596
3597 printf(" proc_ctx=%s", pid_context ? : "unavailable");
3598 free(pid_context);
3599 }
3600
3601 if (show_details) {
3602 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
3603 }
3604 printf("\n");
3605
3606 return 0;
3607 }
3608
3609 static int netlink_show_sock(const struct sockaddr_nl *addr,
3610 struct nlmsghdr *nlh, void *arg)
3611 {
3612 struct filter *f = (struct filter *)arg;
3613 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
3614 struct rtattr *tb[NETLINK_DIAG_MAX+1];
3615 int rq = 0, wq = 0;
3616 unsigned long groups = 0;
3617
3618 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
3619 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3620
3621 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
3622 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
3623
3624 if (tb[NETLINK_DIAG_MEMINFO]) {
3625 const __u32 *skmeminfo;
3626
3627 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
3628
3629 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3630 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
3631 }
3632
3633 if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
3634 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
3635 rq, wq, 0, 0)) {
3636 return 0;
3637 }
3638
3639 if (show_mem) {
3640 printf("\t");
3641 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
3642 printf("\n");
3643 }
3644
3645 return 0;
3646 }
3647
3648 static int netlink_show_netlink(struct filter *f)
3649 {
3650 DIAG_REQUEST(req, struct netlink_diag_req r);
3651
3652 req.r.sdiag_family = AF_NETLINK;
3653 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
3654 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
3655
3656 return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
3657 }
3658
3659 static int netlink_show(struct filter *f)
3660 {
3661 FILE *fp;
3662 char buf[256];
3663 int prot, pid;
3664 unsigned int groups;
3665 int rq, wq, rc;
3666 unsigned long long sk, cb;
3667
3668 if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
3669 return 0;
3670
3671 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
3672 netlink_show_netlink(f) == 0)
3673 return 0;
3674
3675 if ((fp = net_netlink_open()) == NULL)
3676 return -1;
3677 if (!fgets(buf, sizeof(buf), fp)) {
3678 fclose(fp);
3679 return -1;
3680 }
3681
3682 while (fgets(buf, sizeof(buf), fp)) {
3683 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
3684 &sk,
3685 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
3686
3687 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
3688 }
3689
3690 fclose(fp);
3691 return 0;
3692 }
3693
3694 struct sock_diag_msg {
3695 __u8 sdiag_family;
3696 };
3697
3698 static int generic_show_sock(const struct sockaddr_nl *addr,
3699 struct nlmsghdr *nlh, void *arg)
3700 {
3701 struct sock_diag_msg *r = NLMSG_DATA(nlh);
3702 struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
3703
3704 switch (r->sdiag_family) {
3705 case AF_INET:
3706 case AF_INET6:
3707 return show_one_inet_sock(addr, nlh, &inet_arg);
3708 case AF_UNIX:
3709 return unix_show_sock(addr, nlh, arg);
3710 case AF_PACKET:
3711 return packet_show_sock(addr, nlh, arg);
3712 case AF_NETLINK:
3713 return netlink_show_sock(addr, nlh, arg);
3714 default:
3715 return -1;
3716 }
3717 }
3718
3719 static int handle_follow_request(struct filter *f)
3720 {
3721 int ret = 0;
3722 int groups = 0;
3723 struct rtnl_handle rth;
3724
3725 if (f->families & (1 << AF_INET) && f->dbs & (1 << TCP_DB))
3726 groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
3727 if (f->families & (1 << AF_INET) && f->dbs & (1 << UDP_DB))
3728 groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
3729 if (f->families & (1 << AF_INET6) && f->dbs & (1 << TCP_DB))
3730 groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
3731 if (f->families & (1 << AF_INET6) && f->dbs & (1 << UDP_DB))
3732 groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
3733
3734 if (groups == 0)
3735 return -1;
3736
3737 if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
3738 return -1;
3739
3740 rth.dump = 0;
3741 rth.local.nl_pid = 0;
3742
3743 if (rtnl_dump_filter(&rth, generic_show_sock, f))
3744 ret = -1;
3745
3746 rtnl_close(&rth);
3747 return ret;
3748 }
3749
3750 static int get_snmp_int(char *proto, char *key, int *result)
3751 {
3752 char buf[1024];
3753 FILE *fp;
3754 int protolen = strlen(proto);
3755 int keylen = strlen(key);
3756
3757 *result = 0;
3758
3759 if ((fp = net_snmp_open()) == NULL)
3760 return -1;
3761
3762 while (fgets(buf, sizeof(buf), fp) != NULL) {
3763 char *p = buf;
3764 int pos = 0;
3765
3766 if (memcmp(buf, proto, protolen))
3767 continue;
3768 while ((p = strchr(p, ' ')) != NULL) {
3769 pos++;
3770 p++;
3771 if (memcmp(p, key, keylen) == 0 &&
3772 (p[keylen] == ' ' || p[keylen] == '\n'))
3773 break;
3774 }
3775 if (fgets(buf, sizeof(buf), fp) == NULL)
3776 break;
3777 if (memcmp(buf, proto, protolen))
3778 break;
3779 p = buf;
3780 while ((p = strchr(p, ' ')) != NULL) {
3781 p++;
3782 if (--pos == 0) {
3783 sscanf(p, "%d", result);
3784 fclose(fp);
3785 return 0;
3786 }
3787 }
3788 }
3789
3790 fclose(fp);
3791 errno = ESRCH;
3792 return -1;
3793 }
3794
3795
3796 /* Get stats from sockstat */
3797
3798 struct ssummary {
3799 int socks;
3800 int tcp_mem;
3801 int tcp_total;
3802 int tcp_orphans;
3803 int tcp_tws;
3804 int tcp4_hashed;
3805 int udp4;
3806 int raw4;
3807 int frag4;
3808 int frag4_mem;
3809 int tcp6_hashed;
3810 int udp6;
3811 int raw6;
3812 int frag6;
3813 int frag6_mem;
3814 };
3815
3816 static void get_sockstat_line(char *line, struct ssummary *s)
3817 {
3818 char id[256], rem[256];
3819
3820 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
3821 return;
3822
3823 if (strcmp(id, "sockets:") == 0)
3824 sscanf(rem, "%*s%d", &s->socks);
3825 else if (strcmp(id, "UDP:") == 0)
3826 sscanf(rem, "%*s%d", &s->udp4);
3827 else if (strcmp(id, "UDP6:") == 0)
3828 sscanf(rem, "%*s%d", &s->udp6);
3829 else if (strcmp(id, "RAW:") == 0)
3830 sscanf(rem, "%*s%d", &s->raw4);
3831 else if (strcmp(id, "RAW6:") == 0)
3832 sscanf(rem, "%*s%d", &s->raw6);
3833 else if (strcmp(id, "TCP6:") == 0)
3834 sscanf(rem, "%*s%d", &s->tcp6_hashed);
3835 else if (strcmp(id, "FRAG:") == 0)
3836 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
3837 else if (strcmp(id, "FRAG6:") == 0)
3838 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
3839 else if (strcmp(id, "TCP:") == 0)
3840 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
3841 &s->tcp4_hashed,
3842 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
3843 }
3844
3845 static int get_sockstat(struct ssummary *s)
3846 {
3847 char buf[256];
3848 FILE *fp;
3849
3850 memset(s, 0, sizeof(*s));
3851
3852 if ((fp = net_sockstat_open()) == NULL)
3853 return -1;
3854 while (fgets(buf, sizeof(buf), fp) != NULL)
3855 get_sockstat_line(buf, s);
3856 fclose(fp);
3857
3858 if ((fp = net_sockstat6_open()) == NULL)
3859 return 0;
3860 while (fgets(buf, sizeof(buf), fp) != NULL)
3861 get_sockstat_line(buf, s);
3862 fclose(fp);
3863
3864 return 0;
3865 }
3866
3867 static int print_summary(void)
3868 {
3869 struct ssummary s;
3870 int tcp_estab;
3871
3872 if (get_sockstat(&s) < 0)
3873 perror("ss: get_sockstat");
3874 if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0)
3875 perror("ss: get_snmpstat");
3876
3877 get_slabstat(&slabstat);
3878
3879 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
3880
3881 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
3882 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
3883 tcp_estab,
3884 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
3885 s.tcp_orphans,
3886 slabstat.tcp_syns,
3887 s.tcp_tws, slabstat.tcp_tws,
3888 slabstat.tcp_ports
3889 );
3890
3891 printf("\n");
3892 printf("Transport Total IP IPv6\n");
3893 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
3894 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
3895 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
3896 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
3897 printf("INET %-9d %-9d %-9d\n",
3898 s.raw4+s.udp4+s.tcp4_hashed+
3899 s.raw6+s.udp6+s.tcp6_hashed,
3900 s.raw4+s.udp4+s.tcp4_hashed,
3901 s.raw6+s.udp6+s.tcp6_hashed);
3902 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
3903
3904 printf("\n");
3905
3906 return 0;
3907 }
3908
3909 static void _usage(FILE *dest)
3910 {
3911 fprintf(dest,
3912 "Usage: ss [ OPTIONS ]\n"
3913 " ss [ OPTIONS ] [ FILTER ]\n"
3914 " -h, --help this message\n"
3915 " -V, --version output version information\n"
3916 " -n, --numeric don't resolve service names\n"
3917 " -r, --resolve resolve host names\n"
3918 " -a, --all display all sockets\n"
3919 " -l, --listening display listening sockets\n"
3920 " -o, --options show timer information\n"
3921 " -e, --extended show detailed socket information\n"
3922 " -m, --memory show socket memory usage\n"
3923 " -p, --processes show process using socket\n"
3924 " -i, --info show internal TCP information\n"
3925 " -s, --summary show socket usage summary\n"
3926 " -b, --bpf show bpf filter socket information\n"
3927 " -E, --events continually display sockets as they are destroyed\n"
3928 " -Z, --context display process SELinux security contexts\n"
3929 " -z, --contexts display process and socket SELinux security contexts\n"
3930 " -N, --net switch to the specified network namespace name\n"
3931 "\n"
3932 " -4, --ipv4 display only IP version 4 sockets\n"
3933 " -6, --ipv6 display only IP version 6 sockets\n"
3934 " -0, --packet display PACKET sockets\n"
3935 " -t, --tcp display only TCP sockets\n"
3936 " -S, --sctp display only SCTP sockets\n"
3937 " -u, --udp display only UDP sockets\n"
3938 " -d, --dccp display only DCCP sockets\n"
3939 " -w, --raw display only RAW sockets\n"
3940 " -x, --unix display only Unix domain sockets\n"
3941 " -f, --family=FAMILY display sockets of type FAMILY\n"
3942 " FAMILY := {inet|inet6|link|unix|netlink|help}\n"
3943 "\n"
3944 " -K, --kill forcibly close sockets, display what was closed\n"
3945 " -H, --no-header Suppress header line\n"
3946 "\n"
3947 " -A, --query=QUERY, --socket=QUERY\n"
3948 " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
3949 "\n"
3950 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
3951 " -F, --filter=FILE read filter information from FILE\n"
3952 " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
3953 " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
3954 " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n"
3955 " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3956 " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3957 " bucket := {syn-recv|time-wait}\n"
3958 " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n"
3959 );
3960 }
3961
3962 static void help(void) __attribute__((noreturn));
3963 static void help(void)
3964 {
3965 _usage(stdout);
3966 exit(0);
3967 }
3968
3969 static void usage(void) __attribute__((noreturn));
3970 static void usage(void)
3971 {
3972 _usage(stderr);
3973 exit(-1);
3974 }
3975
3976
3977 static int scan_state(const char *state)
3978 {
3979 static const char * const sstate_namel[] = {
3980 "UNKNOWN",
3981 [SS_ESTABLISHED] = "established",
3982 [SS_SYN_SENT] = "syn-sent",
3983 [SS_SYN_RECV] = "syn-recv",
3984 [SS_FIN_WAIT1] = "fin-wait-1",
3985 [SS_FIN_WAIT2] = "fin-wait-2",
3986 [SS_TIME_WAIT] = "time-wait",
3987 [SS_CLOSE] = "unconnected",
3988 [SS_CLOSE_WAIT] = "close-wait",
3989 [SS_LAST_ACK] = "last-ack",
3990 [SS_LISTEN] = "listening",
3991 [SS_CLOSING] = "closing",
3992 };
3993 int i;
3994
3995 if (strcasecmp(state, "close") == 0 ||
3996 strcasecmp(state, "closed") == 0)
3997 return (1<<SS_CLOSE);
3998 if (strcasecmp(state, "syn-rcv") == 0)
3999 return (1<<SS_SYN_RECV);
4000 if (strcasecmp(state, "established") == 0)
4001 return (1<<SS_ESTABLISHED);
4002 if (strcasecmp(state, "all") == 0)
4003 return SS_ALL;
4004 if (strcasecmp(state, "connected") == 0)
4005 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
4006 if (strcasecmp(state, "synchronized") == 0)
4007 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
4008 if (strcasecmp(state, "bucket") == 0)
4009 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
4010 if (strcasecmp(state, "big") == 0)
4011 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
4012 for (i = 0; i < SS_MAX; i++) {
4013 if (strcasecmp(state, sstate_namel[i]) == 0)
4014 return (1<<i);
4015 }
4016
4017 fprintf(stderr, "ss: wrong state name: %s\n", state);
4018 exit(-1);
4019 }
4020
4021 static const struct option long_opts[] = {
4022 { "numeric", 0, 0, 'n' },
4023 { "resolve", 0, 0, 'r' },
4024 { "options", 0, 0, 'o' },
4025 { "extended", 0, 0, 'e' },
4026 { "memory", 0, 0, 'm' },
4027 { "info", 0, 0, 'i' },
4028 { "processes", 0, 0, 'p' },
4029 { "bpf", 0, 0, 'b' },
4030 { "events", 0, 0, 'E' },
4031 { "dccp", 0, 0, 'd' },
4032 { "tcp", 0, 0, 't' },
4033 { "sctp", 0, 0, 'S' },
4034 { "udp", 0, 0, 'u' },
4035 { "raw", 0, 0, 'w' },
4036 { "unix", 0, 0, 'x' },
4037 { "all", 0, 0, 'a' },
4038 { "listening", 0, 0, 'l' },
4039 { "ipv4", 0, 0, '4' },
4040 { "ipv6", 0, 0, '6' },
4041 { "packet", 0, 0, '0' },
4042 { "family", 1, 0, 'f' },
4043 { "socket", 1, 0, 'A' },
4044 { "query", 1, 0, 'A' },
4045 { "summary", 0, 0, 's' },
4046 { "diag", 1, 0, 'D' },
4047 { "filter", 1, 0, 'F' },
4048 { "version", 0, 0, 'V' },
4049 { "help", 0, 0, 'h' },
4050 { "context", 0, 0, 'Z' },
4051 { "contexts", 0, 0, 'z' },
4052 { "net", 1, 0, 'N' },
4053 { "kill", 0, 0, 'K' },
4054 { "no-header", 0, 0, 'H' },
4055 { 0 }
4056
4057 };
4058
4059 int main(int argc, char *argv[])
4060 {
4061 int saw_states = 0;
4062 int saw_query = 0;
4063 int do_summary = 0;
4064 const char *dump_tcpdiag = NULL;
4065 FILE *filter_fp = NULL;
4066 int ch;
4067 int state_filter = 0;
4068 int addrp_width, screen_width = 80;
4069
4070 while ((ch = getopt_long(argc, argv,
4071 "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
4072 long_opts, NULL)) != EOF) {
4073 switch (ch) {
4074 case 'n':
4075 resolve_services = 0;
4076 break;
4077 case 'r':
4078 resolve_hosts = 1;
4079 break;
4080 case 'o':
4081 show_options = 1;
4082 break;
4083 case 'e':
4084 show_options = 1;
4085 show_details++;
4086 break;
4087 case 'm':
4088 show_mem = 1;
4089 break;
4090 case 'i':
4091 show_tcpinfo = 1;
4092 break;
4093 case 'p':
4094 show_users++;
4095 user_ent_hash_build();
4096 break;
4097 case 'b':
4098 show_options = 1;
4099 show_bpf++;
4100 break;
4101 case 'E':
4102 follow_events = 1;
4103 break;
4104 case 'd':
4105 filter_db_set(&current_filter, DCCP_DB);
4106 break;
4107 case 't':
4108 filter_db_set(&current_filter, TCP_DB);
4109 break;
4110 case 'S':
4111 filter_db_set(&current_filter, SCTP_DB);
4112 break;
4113 case 'u':
4114 filter_db_set(&current_filter, UDP_DB);
4115 break;
4116 case 'w':
4117 filter_db_set(&current_filter, RAW_DB);
4118 break;
4119 case 'x':
4120 filter_af_set(&current_filter, AF_UNIX);
4121 break;
4122 case 'a':
4123 state_filter = SS_ALL;
4124 break;
4125 case 'l':
4126 state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
4127 break;
4128 case '4':
4129 filter_af_set(&current_filter, AF_INET);
4130 break;
4131 case '6':
4132 filter_af_set(&current_filter, AF_INET6);
4133 break;
4134 case '0':
4135 filter_af_set(&current_filter, AF_PACKET);
4136 break;
4137 case 'f':
4138 if (strcmp(optarg, "inet") == 0)
4139 filter_af_set(&current_filter, AF_INET);
4140 else if (strcmp(optarg, "inet6") == 0)
4141 filter_af_set(&current_filter, AF_INET6);
4142 else if (strcmp(optarg, "link") == 0)
4143 filter_af_set(&current_filter, AF_PACKET);
4144 else if (strcmp(optarg, "unix") == 0)
4145 filter_af_set(&current_filter, AF_UNIX);
4146 else if (strcmp(optarg, "netlink") == 0)
4147 filter_af_set(&current_filter, AF_NETLINK);
4148 else if (strcmp(optarg, "help") == 0)
4149 help();
4150 else {
4151 fprintf(stderr, "ss: \"%s\" is invalid family\n",
4152 optarg);
4153 usage();
4154 }
4155 break;
4156 case 'A':
4157 {
4158 char *p, *p1;
4159
4160 if (!saw_query) {
4161 current_filter.dbs = 0;
4162 state_filter = state_filter ?
4163 state_filter : SS_CONN;
4164 saw_query = 1;
4165 do_default = 0;
4166 }
4167 p = p1 = optarg;
4168 do {
4169 if ((p1 = strchr(p, ',')) != NULL)
4170 *p1 = 0;
4171 if (strcmp(p, "all") == 0) {
4172 filter_default_dbs(&current_filter);
4173 } else if (strcmp(p, "inet") == 0) {
4174 filter_db_set(&current_filter, UDP_DB);
4175 filter_db_set(&current_filter, DCCP_DB);
4176 filter_db_set(&current_filter, TCP_DB);
4177 filter_db_set(&current_filter, SCTP_DB);
4178 filter_db_set(&current_filter, RAW_DB);
4179 } else if (strcmp(p, "udp") == 0) {
4180 filter_db_set(&current_filter, UDP_DB);
4181 } else if (strcmp(p, "dccp") == 0) {
4182 filter_db_set(&current_filter, DCCP_DB);
4183 } else if (strcmp(p, "tcp") == 0) {
4184 filter_db_set(&current_filter, TCP_DB);
4185 } else if (strcmp(p, "sctp") == 0) {
4186 filter_db_set(&current_filter, SCTP_DB);
4187 } else if (strcmp(p, "raw") == 0) {
4188 filter_db_set(&current_filter, RAW_DB);
4189 } else if (strcmp(p, "unix") == 0) {
4190 filter_db_set(&current_filter, UNIX_ST_DB);
4191 filter_db_set(&current_filter, UNIX_DG_DB);
4192 filter_db_set(&current_filter, UNIX_SQ_DB);
4193 } else if (strcasecmp(p, "unix_stream") == 0 ||
4194 strcmp(p, "u_str") == 0) {
4195 filter_db_set(&current_filter, UNIX_ST_DB);
4196 } else if (strcasecmp(p, "unix_dgram") == 0 ||
4197 strcmp(p, "u_dgr") == 0) {
4198 filter_db_set(&current_filter, UNIX_DG_DB);
4199 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
4200 strcmp(p, "u_seq") == 0) {
4201 filter_db_set(&current_filter, UNIX_SQ_DB);
4202 } else if (strcmp(p, "packet") == 0) {
4203 filter_db_set(&current_filter, PACKET_R_DB);
4204 filter_db_set(&current_filter, PACKET_DG_DB);
4205 } else if (strcmp(p, "packet_raw") == 0 ||
4206 strcmp(p, "p_raw") == 0) {
4207 filter_db_set(&current_filter, PACKET_R_DB);
4208 } else if (strcmp(p, "packet_dgram") == 0 ||
4209 strcmp(p, "p_dgr") == 0) {
4210 filter_db_set(&current_filter, PACKET_DG_DB);
4211 } else if (strcmp(p, "netlink") == 0) {
4212 filter_db_set(&current_filter, NETLINK_DB);
4213 } else {
4214 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
4215 usage();
4216 }
4217 p = p1 + 1;
4218 } while (p1);
4219 break;
4220 }
4221 case 's':
4222 do_summary = 1;
4223 break;
4224 case 'D':
4225 dump_tcpdiag = optarg;
4226 break;
4227 case 'F':
4228 if (filter_fp) {
4229 fprintf(stderr, "More than one filter file\n");
4230 exit(-1);
4231 }
4232 if (optarg[0] == '-')
4233 filter_fp = stdin;
4234 else
4235 filter_fp = fopen(optarg, "r");
4236 if (!filter_fp) {
4237 perror("fopen filter file");
4238 exit(-1);
4239 }
4240 break;
4241 case 'v':
4242 case 'V':
4243 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
4244 exit(0);
4245 case 'z':
4246 show_sock_ctx++;
4247 /* fall through */
4248 case 'Z':
4249 if (is_selinux_enabled() <= 0) {
4250 fprintf(stderr, "ss: SELinux is not enabled.\n");
4251 exit(1);
4252 }
4253 show_proc_ctx++;
4254 user_ent_hash_build();
4255 break;
4256 case 'N':
4257 if (netns_switch(optarg))
4258 exit(1);
4259 break;
4260 case 'K':
4261 current_filter.kill = 1;
4262 break;
4263 case 'H':
4264 show_header = 0;
4265 break;
4266 case 'h':
4267 help();
4268 case '?':
4269 default:
4270 usage();
4271 }
4272 }
4273
4274 argc -= optind;
4275 argv += optind;
4276
4277 if (do_summary) {
4278 print_summary();
4279 if (do_default && argc == 0)
4280 exit(0);
4281 }
4282
4283 while (argc > 0) {
4284 if (strcmp(*argv, "state") == 0) {
4285 NEXT_ARG();
4286 if (!saw_states)
4287 state_filter = 0;
4288 state_filter |= scan_state(*argv);
4289 saw_states = 1;
4290 } else if (strcmp(*argv, "exclude") == 0 ||
4291 strcmp(*argv, "excl") == 0) {
4292 NEXT_ARG();
4293 if (!saw_states)
4294 state_filter = SS_ALL;
4295 state_filter &= ~scan_state(*argv);
4296 saw_states = 1;
4297 } else {
4298 break;
4299 }
4300 argc--; argv++;
4301 }
4302
4303 if (do_default) {
4304 state_filter = state_filter ? state_filter : SS_CONN;
4305 filter_default_dbs(&current_filter);
4306 }
4307
4308 filter_states_set(&current_filter, state_filter);
4309 filter_merge_defaults(&current_filter);
4310
4311 if (resolve_services && resolve_hosts &&
4312 (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
4313 init_service_resolver();
4314
4315 if (current_filter.dbs == 0) {
4316 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
4317 exit(0);
4318 }
4319 if (current_filter.families == 0) {
4320 fprintf(stderr, "ss: no families to show with such filter.\n");
4321 exit(0);
4322 }
4323 if (current_filter.states == 0) {
4324 fprintf(stderr, "ss: no socket states to show with such filter.\n");
4325 exit(0);
4326 }
4327
4328 if (dump_tcpdiag) {
4329 FILE *dump_fp = stdout;
4330
4331 if (!(current_filter.dbs & (1<<TCP_DB))) {
4332 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
4333 exit(0);
4334 }
4335 if (dump_tcpdiag[0] != '-') {
4336 dump_fp = fopen(dump_tcpdiag, "w");
4337 if (!dump_tcpdiag) {
4338 perror("fopen dump file");
4339 exit(-1);
4340 }
4341 }
4342 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
4343 fflush(dump_fp);
4344 exit(0);
4345 }
4346
4347 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
4348 usage();
4349
4350 netid_width = 0;
4351 if (current_filter.dbs&(current_filter.dbs-1))
4352 netid_width = 5;
4353
4354 state_width = 0;
4355 if (current_filter.states&(current_filter.states-1))
4356 state_width = 10;
4357
4358 if (isatty(STDOUT_FILENO)) {
4359 struct winsize w;
4360
4361 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
4362 if (w.ws_col > 0)
4363 screen_width = w.ws_col;
4364 }
4365 }
4366
4367 addrp_width = screen_width;
4368 if (netid_width)
4369 addrp_width -= netid_width + 1;
4370 if (state_width)
4371 addrp_width -= state_width + 1;
4372 addrp_width -= 14;
4373
4374 if (addrp_width&1) {
4375 if (netid_width)
4376 netid_width++;
4377 else if (state_width)
4378 state_width++;
4379 else
4380 odd_width_pad = " ";
4381 }
4382
4383 addrp_width /= 2;
4384 addrp_width--;
4385
4386 serv_width = resolve_services ? 7 : 5;
4387
4388 if (addrp_width < 15+serv_width+1)
4389 addrp_width = 15+serv_width+1;
4390
4391 addr_width = addrp_width - serv_width - 1;
4392
4393 if (show_header) {
4394 if (netid_width)
4395 printf("%-*s ", netid_width, "Netid");
4396 if (state_width)
4397 printf("%-*s ", state_width, "State");
4398 printf("%-6s %-6s %s", "Recv-Q", "Send-Q", odd_width_pad);
4399 }
4400
4401 /* Make enough space for the local/remote port field */
4402 addr_width -= 13;
4403 serv_width += 13;
4404
4405 if (show_header) {
4406 printf("%*s:%-*s %*s:%-*s\n",
4407 addr_width, "Local Address", serv_width, "Port",
4408 addr_width, "Peer Address", serv_width, "Port");
4409 }
4410
4411 fflush(stdout);
4412
4413 if (follow_events)
4414 exit(handle_follow_request(&current_filter));
4415
4416 if (current_filter.dbs & (1<<NETLINK_DB))
4417 netlink_show(&current_filter);
4418 if (current_filter.dbs & PACKET_DBM)
4419 packet_show(&current_filter);
4420 if (current_filter.dbs & UNIX_DBM)
4421 unix_show(&current_filter);
4422 if (current_filter.dbs & (1<<RAW_DB))
4423 raw_show(&current_filter);
4424 if (current_filter.dbs & (1<<UDP_DB))
4425 udp_show(&current_filter);
4426 if (current_filter.dbs & (1<<TCP_DB))
4427 tcp_show(&current_filter);
4428 if (current_filter.dbs & (1<<DCCP_DB))
4429 dccp_show(&current_filter);
4430 if (current_filter.dbs & (1<<SCTP_DB))
4431 sctp_show(&current_filter);
4432
4433 if (show_users || show_proc_ctx || show_sock_ctx)
4434 user_ent_destroy();
4435
4436 return 0;
4437 }
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