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