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