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ss: Fix for added diag support check
[mirror_iproute2.git] / misc / ss.c
1 /*
2 * ss.c "sockstat", socket statistics
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 */
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <unistd.h>
15 #include <syslog.h>
16 #include <fcntl.h>
17 #include <sys/ioctl.h>
18 #include <sys/socket.h>
19 #include <sys/uio.h>
20 #include <netinet/in.h>
21 #include <string.h>
22 #include <errno.h>
23 #include <netdb.h>
24 #include <arpa/inet.h>
25 #include <dirent.h>
26 #include <fnmatch.h>
27 #include <getopt.h>
28 #include <stdbool.h>
29 #include <limits.h>
30
31 #include "utils.h"
32 #include "rt_names.h"
33 #include "ll_map.h"
34 #include "libnetlink.h"
35 #include "namespace.h"
36 #include "SNAPSHOT.h"
37
38 #include <linux/tcp.h>
39 #include <linux/sock_diag.h>
40 #include <linux/inet_diag.h>
41 #include <linux/unix_diag.h>
42 #include <linux/netdevice.h> /* for MAX_ADDR_LEN */
43 #include <linux/filter.h>
44 #include <linux/packet_diag.h>
45 #include <linux/netlink_diag.h>
46 #include <linux/sctp.h>
47
48 #define MAGIC_SEQ 123456
49
50 #define DIAG_REQUEST(_req, _r) \
51 struct { \
52 struct nlmsghdr nlh; \
53 _r; \
54 } _req = { \
55 .nlh = { \
56 .nlmsg_type = SOCK_DIAG_BY_FAMILY, \
57 .nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
58 .nlmsg_seq = MAGIC_SEQ, \
59 .nlmsg_len = sizeof(_req), \
60 }, \
61 }
62
63 #if HAVE_SELINUX
64 #include <selinux/selinux.h>
65 #else
66 /* Stubs for SELinux functions */
67 static int is_selinux_enabled(void)
68 {
69 return -1;
70 }
71
72 static int getpidcon(pid_t pid, char **context)
73 {
74 *context = NULL;
75 return -1;
76 }
77
78 static int getfilecon(char *path, char **context)
79 {
80 *context = NULL;
81 return -1;
82 }
83
84 static int security_get_initial_context(char *name, char **context)
85 {
86 *context = NULL;
87 return -1;
88 }
89 #endif
90
91 int resolve_hosts;
92 int resolve_services = 1;
93 int preferred_family = AF_UNSPEC;
94 int show_options;
95 int show_details;
96 int show_users;
97 int show_mem;
98 int show_tcpinfo;
99 int show_bpf;
100 int show_proc_ctx;
101 int show_sock_ctx;
102 int show_header = 1;
103 int follow_events;
104 int sctp_ino;
105
106 int netid_width;
107 int state_width;
108 int addr_width;
109 int serv_width;
110
111 static const char *TCP_PROTO = "tcp";
112 static const char *SCTP_PROTO = "sctp";
113 static const char *UDP_PROTO = "udp";
114 static const char *RAW_PROTO = "raw";
115 static const char *dg_proto;
116
117 enum {
118 TCP_DB,
119 DCCP_DB,
120 UDP_DB,
121 RAW_DB,
122 UNIX_DG_DB,
123 UNIX_ST_DB,
124 UNIX_SQ_DB,
125 PACKET_DG_DB,
126 PACKET_R_DB,
127 NETLINK_DB,
128 SCTP_DB,
129 MAX_DB
130 };
131
132 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
133 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
134 #define ALL_DB ((1<<MAX_DB)-1)
135 #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
136 #define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
137
138 enum {
139 SS_UNKNOWN,
140 SS_ESTABLISHED,
141 SS_SYN_SENT,
142 SS_SYN_RECV,
143 SS_FIN_WAIT1,
144 SS_FIN_WAIT2,
145 SS_TIME_WAIT,
146 SS_CLOSE,
147 SS_CLOSE_WAIT,
148 SS_LAST_ACK,
149 SS_LISTEN,
150 SS_CLOSING,
151 SS_MAX
152 };
153
154 enum {
155 SCTP_STATE_CLOSED = 0,
156 SCTP_STATE_COOKIE_WAIT = 1,
157 SCTP_STATE_COOKIE_ECHOED = 2,
158 SCTP_STATE_ESTABLISHED = 3,
159 SCTP_STATE_SHUTDOWN_PENDING = 4,
160 SCTP_STATE_SHUTDOWN_SENT = 5,
161 SCTP_STATE_SHUTDOWN_RECEIVED = 6,
162 SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
163 };
164
165 #define SS_ALL ((1 << SS_MAX) - 1)
166 #define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
167
168 #include "ssfilter.h"
169
170 struct filter {
171 int dbs;
172 int states;
173 int families;
174 struct ssfilter *f;
175 bool kill;
176 };
177
178 static const struct filter default_dbs[MAX_DB] = {
179 [TCP_DB] = {
180 .states = SS_CONN,
181 .families = (1 << AF_INET) | (1 << AF_INET6),
182 },
183 [DCCP_DB] = {
184 .states = SS_CONN,
185 .families = (1 << AF_INET) | (1 << AF_INET6),
186 },
187 [UDP_DB] = {
188 .states = (1 << SS_ESTABLISHED),
189 .families = (1 << AF_INET) | (1 << AF_INET6),
190 },
191 [RAW_DB] = {
192 .states = (1 << SS_ESTABLISHED),
193 .families = (1 << AF_INET) | (1 << AF_INET6),
194 },
195 [UNIX_DG_DB] = {
196 .states = (1 << SS_CLOSE),
197 .families = (1 << AF_UNIX),
198 },
199 [UNIX_ST_DB] = {
200 .states = SS_CONN,
201 .families = (1 << AF_UNIX),
202 },
203 [UNIX_SQ_DB] = {
204 .states = SS_CONN,
205 .families = (1 << AF_UNIX),
206 },
207 [PACKET_DG_DB] = {
208 .states = (1 << SS_CLOSE),
209 .families = (1 << AF_PACKET),
210 },
211 [PACKET_R_DB] = {
212 .states = (1 << SS_CLOSE),
213 .families = (1 << AF_PACKET),
214 },
215 [NETLINK_DB] = {
216 .states = (1 << SS_CLOSE),
217 .families = (1 << AF_NETLINK),
218 },
219 [SCTP_DB] = {
220 .states = SS_CONN,
221 .families = (1 << AF_INET) | (1 << AF_INET6),
222 },
223 };
224
225 static const struct filter default_afs[AF_MAX] = {
226 [AF_INET] = {
227 .dbs = INET_DBM,
228 .states = SS_CONN,
229 },
230 [AF_INET6] = {
231 .dbs = INET_DBM,
232 .states = SS_CONN,
233 },
234 [AF_UNIX] = {
235 .dbs = UNIX_DBM,
236 .states = SS_CONN,
237 },
238 [AF_PACKET] = {
239 .dbs = PACKET_DBM,
240 .states = (1 << SS_CLOSE),
241 },
242 [AF_NETLINK] = {
243 .dbs = (1 << NETLINK_DB),
244 .states = (1 << SS_CLOSE),
245 },
246 };
247
248 static int do_default = 1;
249 static struct filter current_filter;
250
251 static void filter_db_set(struct filter *f, int db)
252 {
253 f->states |= default_dbs[db].states;
254 f->dbs |= 1 << db;
255 do_default = 0;
256 }
257
258 static void filter_af_set(struct filter *f, int af)
259 {
260 f->states |= default_afs[af].states;
261 f->families |= 1 << af;
262 do_default = 0;
263 preferred_family = af;
264 }
265
266 static int filter_af_get(struct filter *f, int af)
267 {
268 return f->families & (1 << af);
269 }
270
271 static void filter_default_dbs(struct filter *f)
272 {
273 filter_db_set(f, UDP_DB);
274 filter_db_set(f, DCCP_DB);
275 filter_db_set(f, TCP_DB);
276 filter_db_set(f, RAW_DB);
277 filter_db_set(f, UNIX_ST_DB);
278 filter_db_set(f, UNIX_DG_DB);
279 filter_db_set(f, UNIX_SQ_DB);
280 filter_db_set(f, PACKET_R_DB);
281 filter_db_set(f, PACKET_DG_DB);
282 filter_db_set(f, NETLINK_DB);
283 filter_db_set(f, SCTP_DB);
284 }
285
286 static void filter_states_set(struct filter *f, int states)
287 {
288 if (states)
289 f->states = states;
290 }
291
292 static void filter_merge_defaults(struct filter *f)
293 {
294 int db;
295 int af;
296
297 for (db = 0; db < MAX_DB; db++) {
298 if (!(f->dbs & (1 << db)))
299 continue;
300
301 if (!(default_dbs[db].families & f->families))
302 f->families |= default_dbs[db].families;
303 }
304 for (af = 0; af < AF_MAX; af++) {
305 if (!(f->families & (1 << af)))
306 continue;
307
308 if (!(default_afs[af].dbs & f->dbs))
309 f->dbs |= default_afs[af].dbs;
310 }
311 }
312
313 static FILE *generic_proc_open(const char *env, const char *name)
314 {
315 const char *p = getenv(env);
316 char store[128];
317
318 if (!p) {
319 p = getenv("PROC_ROOT") ? : "/proc";
320 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
321 p = store;
322 }
323
324 return fopen(p, "r");
325 }
326 #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
327 #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
328 #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
329 #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
330 #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
331 #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
332 #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
333 #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
334 "net/packet")
335 #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
336 "net/netlink")
337 #define slabinfo_open() generic_proc_open("PROC_SLABINFO", "slabinfo")
338 #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
339 "net/sockstat")
340 #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
341 "net/sockstat6")
342 #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
343 #define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
344 "sys/net/ipv4/ip_local_port_range")
345
346 struct user_ent {
347 struct user_ent *next;
348 unsigned int ino;
349 int pid;
350 int fd;
351 char *process;
352 char *process_ctx;
353 char *socket_ctx;
354 };
355
356 #define USER_ENT_HASH_SIZE 256
357 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
358
359 static int user_ent_hashfn(unsigned int ino)
360 {
361 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
362
363 return val & (USER_ENT_HASH_SIZE - 1);
364 }
365
366 static void user_ent_add(unsigned int ino, char *process,
367 int pid, int fd,
368 char *proc_ctx,
369 char *sock_ctx)
370 {
371 struct user_ent *p, **pp;
372
373 p = malloc(sizeof(struct user_ent));
374 if (!p) {
375 fprintf(stderr, "ss: failed to malloc buffer\n");
376 abort();
377 }
378 p->next = NULL;
379 p->ino = ino;
380 p->pid = pid;
381 p->fd = fd;
382 p->process = strdup(process);
383 p->process_ctx = strdup(proc_ctx);
384 p->socket_ctx = strdup(sock_ctx);
385
386 pp = &user_ent_hash[user_ent_hashfn(ino)];
387 p->next = *pp;
388 *pp = p;
389 }
390
391 static void user_ent_destroy(void)
392 {
393 struct user_ent *p, *p_next;
394 int cnt = 0;
395
396 while (cnt != USER_ENT_HASH_SIZE) {
397 p = user_ent_hash[cnt];
398 while (p) {
399 free(p->process);
400 free(p->process_ctx);
401 free(p->socket_ctx);
402 p_next = p->next;
403 free(p);
404 p = p_next;
405 }
406 cnt++;
407 }
408 }
409
410 static void user_ent_hash_build(void)
411 {
412 const char *root = getenv("PROC_ROOT") ? : "/proc/";
413 struct dirent *d;
414 char name[1024];
415 int nameoff;
416 DIR *dir;
417 char *pid_context;
418 char *sock_context;
419 const char *no_ctx = "unavailable";
420 static int user_ent_hash_build_init;
421
422 /* If show_users & show_proc_ctx set only do this once */
423 if (user_ent_hash_build_init != 0)
424 return;
425
426 user_ent_hash_build_init = 1;
427
428 strncpy(name, root, sizeof(name)-1);
429 name[sizeof(name)-1] = 0;
430
431 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
432 strcat(name, "/");
433
434 nameoff = strlen(name);
435
436 dir = opendir(name);
437 if (!dir)
438 return;
439
440 while ((d = readdir(dir)) != NULL) {
441 struct dirent *d1;
442 char process[16];
443 char *p;
444 int pid, pos;
445 DIR *dir1;
446 char crap;
447
448 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
449 continue;
450
451 if (getpidcon(pid, &pid_context) != 0)
452 pid_context = strdup(no_ctx);
453
454 snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
455 pos = strlen(name);
456 if ((dir1 = opendir(name)) == NULL) {
457 free(pid_context);
458 continue;
459 }
460
461 process[0] = '\0';
462 p = process;
463
464 while ((d1 = readdir(dir1)) != NULL) {
465 const char *pattern = "socket:[";
466 unsigned int ino;
467 char lnk[64];
468 int fd;
469 ssize_t link_len;
470 char tmp[1024];
471
472 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
473 continue;
474
475 snprintf(name+pos, sizeof(name) - pos, "%d", fd);
476
477 link_len = readlink(name, lnk, sizeof(lnk)-1);
478 if (link_len == -1)
479 continue;
480 lnk[link_len] = '\0';
481
482 if (strncmp(lnk, pattern, strlen(pattern)))
483 continue;
484
485 sscanf(lnk, "socket:[%u]", &ino);
486
487 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
488 root, pid, d1->d_name);
489
490 if (getfilecon(tmp, &sock_context) <= 0)
491 sock_context = strdup(no_ctx);
492
493 if (*p == '\0') {
494 FILE *fp;
495
496 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
497 root, pid);
498 if ((fp = fopen(tmp, "r")) != NULL) {
499 if (fscanf(fp, "%*d (%[^)])", p) < 1)
500 ; /* ignore */
501 fclose(fp);
502 }
503 }
504 user_ent_add(ino, p, pid, fd,
505 pid_context, sock_context);
506 free(sock_context);
507 }
508 free(pid_context);
509 closedir(dir1);
510 }
511 closedir(dir);
512 }
513
514 enum entry_types {
515 USERS,
516 PROC_CTX,
517 PROC_SOCK_CTX
518 };
519
520 #define ENTRY_BUF_SIZE 512
521 static int find_entry(unsigned int ino, char **buf, int type)
522 {
523 struct user_ent *p;
524 int cnt = 0;
525 char *ptr;
526 char *new_buf;
527 int len, new_buf_len;
528 int buf_used = 0;
529 int buf_len = 0;
530
531 if (!ino)
532 return 0;
533
534 p = user_ent_hash[user_ent_hashfn(ino)];
535 ptr = *buf = NULL;
536 while (p) {
537 if (p->ino != ino)
538 goto next;
539
540 while (1) {
541 ptr = *buf + buf_used;
542 switch (type) {
543 case USERS:
544 len = snprintf(ptr, buf_len - buf_used,
545 "(\"%s\",pid=%d,fd=%d),",
546 p->process, p->pid, p->fd);
547 break;
548 case PROC_CTX:
549 len = snprintf(ptr, buf_len - buf_used,
550 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
551 p->process, p->pid,
552 p->process_ctx, p->fd);
553 break;
554 case PROC_SOCK_CTX:
555 len = snprintf(ptr, buf_len - buf_used,
556 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
557 p->process, p->pid,
558 p->process_ctx, p->fd,
559 p->socket_ctx);
560 break;
561 default:
562 fprintf(stderr, "ss: invalid type: %d\n", type);
563 abort();
564 }
565
566 if (len < 0 || len >= buf_len - buf_used) {
567 new_buf_len = buf_len + ENTRY_BUF_SIZE;
568 new_buf = realloc(*buf, new_buf_len);
569 if (!new_buf) {
570 fprintf(stderr, "ss: failed to malloc buffer\n");
571 abort();
572 }
573 *buf = new_buf;
574 buf_len = new_buf_len;
575 continue;
576 } else {
577 buf_used += len;
578 break;
579 }
580 }
581 cnt++;
582 next:
583 p = p->next;
584 }
585 if (buf_used) {
586 ptr = *buf + buf_used;
587 ptr[-1] = '\0';
588 }
589 return cnt;
590 }
591
592 /* Get stats from slab */
593
594 struct slabstat {
595 int socks;
596 int tcp_ports;
597 int tcp_tws;
598 int tcp_syns;
599 int skbs;
600 };
601
602 static struct slabstat slabstat;
603
604 static int get_slabstat(struct slabstat *s)
605 {
606 char buf[256];
607 FILE *fp;
608 int cnt;
609 static int slabstat_valid;
610 static const char * const slabstat_ids[] = {
611 "sock",
612 "tcp_bind_bucket",
613 "tcp_tw_bucket",
614 "tcp_open_request",
615 "skbuff_head_cache",
616 };
617
618 if (slabstat_valid)
619 return 0;
620
621 memset(s, 0, sizeof(*s));
622
623 fp = slabinfo_open();
624 if (!fp)
625 return -1;
626
627 cnt = sizeof(*s)/sizeof(int);
628
629 if (!fgets(buf, sizeof(buf), fp)) {
630 fclose(fp);
631 return -1;
632 }
633 while (fgets(buf, sizeof(buf), fp) != NULL) {
634 int i;
635
636 for (i = 0; i < ARRAY_SIZE(slabstat_ids); i++) {
637 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
638 sscanf(buf, "%*s%d", ((int *)s) + i);
639 cnt--;
640 break;
641 }
642 }
643 if (cnt <= 0)
644 break;
645 }
646
647 slabstat_valid = 1;
648
649 fclose(fp);
650 return 0;
651 }
652
653 static unsigned long long cookie_sk_get(const uint32_t *cookie)
654 {
655 return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
656 }
657
658 static const char *sctp_sstate_name[] = {
659 [SCTP_STATE_CLOSED] = "CLOSED",
660 [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
661 [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
662 [SCTP_STATE_ESTABLISHED] = "ESTAB",
663 [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
664 [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
665 [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
666 [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
667 };
668
669 struct sockstat {
670 struct sockstat *next;
671 unsigned int type;
672 uint16_t prot;
673 uint16_t raw_prot;
674 inet_prefix local;
675 inet_prefix remote;
676 int lport;
677 int rport;
678 int state;
679 int rq, wq;
680 unsigned int ino;
681 unsigned int uid;
682 int refcnt;
683 unsigned int iface;
684 unsigned long long sk;
685 char *name;
686 char *peer_name;
687 __u32 mark;
688 };
689
690 struct dctcpstat {
691 unsigned int ce_state;
692 unsigned int alpha;
693 unsigned int ab_ecn;
694 unsigned int ab_tot;
695 bool enabled;
696 };
697
698 struct tcpstat {
699 struct sockstat ss;
700 unsigned int timer;
701 unsigned int timeout;
702 int probes;
703 char cong_alg[16];
704 double rto, ato, rtt, rttvar;
705 int qack, ssthresh, backoff;
706 double send_bps;
707 int snd_wscale;
708 int rcv_wscale;
709 int mss;
710 int rcv_mss;
711 int advmss;
712 unsigned int cwnd;
713 unsigned int lastsnd;
714 unsigned int lastrcv;
715 unsigned int lastack;
716 double pacing_rate;
717 double pacing_rate_max;
718 double delivery_rate;
719 unsigned long long bytes_acked;
720 unsigned long long bytes_received;
721 unsigned int segs_out;
722 unsigned int segs_in;
723 unsigned int data_segs_out;
724 unsigned int data_segs_in;
725 unsigned int unacked;
726 unsigned int retrans;
727 unsigned int retrans_total;
728 unsigned int lost;
729 unsigned int sacked;
730 unsigned int fackets;
731 unsigned int reordering;
732 unsigned int not_sent;
733 double rcv_rtt;
734 double min_rtt;
735 int rcv_space;
736 unsigned long long busy_time;
737 unsigned long long rwnd_limited;
738 unsigned long long sndbuf_limited;
739 bool has_ts_opt;
740 bool has_sack_opt;
741 bool has_ecn_opt;
742 bool has_ecnseen_opt;
743 bool has_fastopen_opt;
744 bool has_wscale_opt;
745 bool app_limited;
746 struct dctcpstat *dctcp;
747 struct tcp_bbr_info *bbr_info;
748 };
749
750 /* SCTP assocs share the same inode number with their parent endpoint. So if we
751 * have seen the inode number before, it must be an assoc instead of the next
752 * endpoint. */
753 static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
754 {
755 if (strcmp(sock_name, "sctp"))
756 return false;
757 if (!sctp_ino || sctp_ino != s->ino)
758 return false;
759 return true;
760 }
761
762 static const char *unix_netid_name(int type)
763 {
764 switch (type) {
765 case SOCK_STREAM:
766 return "u_str";
767 case SOCK_SEQPACKET:
768 return "u_seq";
769 case SOCK_DGRAM:
770 default:
771 return "u_dgr";
772 }
773 }
774
775 static const char *proto_name(int protocol)
776 {
777 switch (protocol) {
778 case 0:
779 return "raw";
780 case IPPROTO_UDP:
781 return "udp";
782 case IPPROTO_TCP:
783 return "tcp";
784 case IPPROTO_SCTP:
785 return "sctp";
786 case IPPROTO_DCCP:
787 return "dccp";
788 }
789
790 return "???";
791 }
792
793 static void sock_state_print(struct sockstat *s)
794 {
795 const char *sock_name;
796 static const char * const sstate_name[] = {
797 "UNKNOWN",
798 [SS_ESTABLISHED] = "ESTAB",
799 [SS_SYN_SENT] = "SYN-SENT",
800 [SS_SYN_RECV] = "SYN-RECV",
801 [SS_FIN_WAIT1] = "FIN-WAIT-1",
802 [SS_FIN_WAIT2] = "FIN-WAIT-2",
803 [SS_TIME_WAIT] = "TIME-WAIT",
804 [SS_CLOSE] = "UNCONN",
805 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
806 [SS_LAST_ACK] = "LAST-ACK",
807 [SS_LISTEN] = "LISTEN",
808 [SS_CLOSING] = "CLOSING",
809 };
810
811 switch (s->local.family) {
812 case AF_UNIX:
813 sock_name = unix_netid_name(s->type);
814 break;
815 case AF_INET:
816 case AF_INET6:
817 sock_name = proto_name(s->type);
818 break;
819 case AF_PACKET:
820 sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
821 break;
822 case AF_NETLINK:
823 sock_name = "nl";
824 break;
825 default:
826 sock_name = "unknown";
827 }
828
829 if (netid_width)
830 printf("%-*s ", netid_width,
831 is_sctp_assoc(s, sock_name) ? "" : sock_name);
832 if (state_width) {
833 if (is_sctp_assoc(s, sock_name))
834 printf("`- %-*s ", state_width - 3,
835 sctp_sstate_name[s->state]);
836 else
837 printf("%-*s ", state_width, sstate_name[s->state]);
838 }
839
840 printf("%-6d %-6d ", s->rq, s->wq);
841 }
842
843 static void sock_details_print(struct sockstat *s)
844 {
845 if (s->uid)
846 printf(" uid:%u", s->uid);
847
848 printf(" ino:%u", s->ino);
849 printf(" sk:%llx", s->sk);
850
851 if (s->mark)
852 printf(" fwmark:0x%x", s->mark);
853 }
854
855 static void sock_addr_print_width(int addr_len, const char *addr, char *delim,
856 int port_len, const char *port, const char *ifname)
857 {
858 if (ifname) {
859 printf("%*s%%%s%s%-*s ", addr_len, addr, ifname, delim,
860 port_len, port);
861 } else {
862 printf("%*s%s%-*s ", addr_len, addr, delim, port_len, port);
863 }
864 }
865
866 static void sock_addr_print(const char *addr, char *delim, const char *port,
867 const char *ifname)
868 {
869 sock_addr_print_width(addr_width, addr, delim, serv_width, port, ifname);
870 }
871
872 static const char *print_ms_timer(unsigned int timeout)
873 {
874 static char buf[64];
875 int secs, msecs, minutes;
876
877 secs = timeout/1000;
878 minutes = secs/60;
879 secs = secs%60;
880 msecs = timeout%1000;
881 buf[0] = 0;
882 if (minutes) {
883 msecs = 0;
884 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
885 if (minutes > 9)
886 secs = 0;
887 }
888 if (secs) {
889 if (secs > 9)
890 msecs = 0;
891 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
892 }
893 if (msecs)
894 sprintf(buf+strlen(buf), "%03dms", msecs);
895 return buf;
896 }
897
898 struct scache {
899 struct scache *next;
900 int port;
901 char *name;
902 const char *proto;
903 };
904
905 struct scache *rlist;
906
907 static void init_service_resolver(void)
908 {
909 char buf[128];
910 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
911
912 if (!fp)
913 return;
914
915 if (!fgets(buf, sizeof(buf), fp)) {
916 pclose(fp);
917 return;
918 }
919 while (fgets(buf, sizeof(buf), fp) != NULL) {
920 unsigned int progn, port;
921 char proto[128], prog[128] = "rpc.";
922 struct scache *c;
923
924 if (sscanf(buf, "%u %*d %s %u %s",
925 &progn, proto, &port, prog+4) != 4)
926 continue;
927
928 if (!(c = malloc(sizeof(*c))))
929 continue;
930
931 c->port = port;
932 c->name = strdup(prog);
933 if (strcmp(proto, TCP_PROTO) == 0)
934 c->proto = TCP_PROTO;
935 else if (strcmp(proto, UDP_PROTO) == 0)
936 c->proto = UDP_PROTO;
937 else if (strcmp(proto, SCTP_PROTO) == 0)
938 c->proto = SCTP_PROTO;
939 else
940 c->proto = NULL;
941 c->next = rlist;
942 rlist = c;
943 }
944 pclose(fp);
945 }
946
947 /* Even do not try default linux ephemeral port ranges:
948 * default /etc/services contains so much of useless crap
949 * wouldbe "allocated" to this area that resolution
950 * is really harmful. I shrug each time when seeing
951 * "socks" or "cfinger" in dumps.
952 */
953 static int is_ephemeral(int port)
954 {
955 static int min = 0, max;
956
957 if (!min) {
958 FILE *f = ephemeral_ports_open();
959
960 if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
961 min = 1024;
962 max = 4999;
963 }
964 if (f)
965 fclose(f);
966 }
967 return port >= min && port <= max;
968 }
969
970
971 static const char *__resolve_service(int port)
972 {
973 struct scache *c;
974
975 for (c = rlist; c; c = c->next) {
976 if (c->port == port && c->proto == dg_proto)
977 return c->name;
978 }
979
980 if (!is_ephemeral(port)) {
981 static int notfirst;
982 struct servent *se;
983
984 if (!notfirst) {
985 setservent(1);
986 notfirst = 1;
987 }
988 se = getservbyport(htons(port), dg_proto);
989 if (se)
990 return se->s_name;
991 }
992
993 return NULL;
994 }
995
996 #define SCACHE_BUCKETS 1024
997 static struct scache *cache_htab[SCACHE_BUCKETS];
998
999 static const char *resolve_service(int port)
1000 {
1001 static char buf[128];
1002 struct scache *c;
1003 const char *res;
1004 int hash;
1005
1006 if (port == 0) {
1007 buf[0] = '*';
1008 buf[1] = 0;
1009 return buf;
1010 }
1011
1012 if (!resolve_services)
1013 goto do_numeric;
1014
1015 if (dg_proto == RAW_PROTO)
1016 return inet_proto_n2a(port, buf, sizeof(buf));
1017
1018
1019 hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
1020
1021 for (c = cache_htab[hash]; c; c = c->next) {
1022 if (c->port == port && c->proto == dg_proto)
1023 goto do_cache;
1024 }
1025
1026 c = malloc(sizeof(*c));
1027 if (!c)
1028 goto do_numeric;
1029 res = __resolve_service(port);
1030 c->port = port;
1031 c->name = res ? strdup(res) : NULL;
1032 c->proto = dg_proto;
1033 c->next = cache_htab[hash];
1034 cache_htab[hash] = c;
1035
1036 do_cache:
1037 if (c->name)
1038 return c->name;
1039
1040 do_numeric:
1041 sprintf(buf, "%u", port);
1042 return buf;
1043 }
1044
1045 static void inet_addr_print(const inet_prefix *a, int port, unsigned int ifindex)
1046 {
1047 char buf[1024];
1048 const char *ap = buf;
1049 int est_len = addr_width;
1050 const char *ifname = NULL;
1051
1052 if (a->family == AF_INET) {
1053 if (a->data[0] == 0) {
1054 buf[0] = '*';
1055 buf[1] = 0;
1056 } else {
1057 ap = format_host(AF_INET, 4, a->data);
1058 }
1059 } else {
1060 if (!memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) {
1061 buf[0] = '*';
1062 buf[1] = 0;
1063 } else {
1064 ap = format_host(a->family, 16, a->data);
1065
1066 /* Numeric IPv6 addresses should be bracketed */
1067 if (strchr(ap, ':')) {
1068 snprintf(buf, sizeof(buf),
1069 "[%s]", ap);
1070 ap = buf;
1071 }
1072
1073 est_len = strlen(ap);
1074 if (est_len <= addr_width)
1075 est_len = addr_width;
1076 else
1077 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
1078 }
1079 }
1080
1081 if (ifindex) {
1082 ifname = ll_index_to_name(ifindex);
1083 est_len -= strlen(ifname) + 1; /* +1 for percent char */
1084 if (est_len < 0)
1085 est_len = 0;
1086 }
1087
1088 sock_addr_print_width(est_len, ap, ":", serv_width, resolve_service(port),
1089 ifname);
1090 }
1091
1092 struct aafilter {
1093 inet_prefix addr;
1094 int port;
1095 unsigned int iface;
1096 __u32 mark;
1097 __u32 mask;
1098 struct aafilter *next;
1099 };
1100
1101 static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
1102 int plen)
1103 {
1104 if (!inet_addr_match(a, p, plen))
1105 return 0;
1106
1107 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
1108 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
1109 * sockets. Fair? */
1110 if (p->family == AF_INET && a->family == AF_INET6) {
1111 if (a->data[0] == 0 && a->data[1] == 0 &&
1112 a->data[2] == htonl(0xffff)) {
1113 inet_prefix tmp = *a;
1114
1115 tmp.data[0] = a->data[3];
1116 return inet_addr_match(&tmp, p, plen);
1117 }
1118 }
1119 return 1;
1120 }
1121
1122 static int unix_match(const inet_prefix *a, const inet_prefix *p)
1123 {
1124 char *addr, *pattern;
1125
1126 memcpy(&addr, a->data, sizeof(addr));
1127 memcpy(&pattern, p->data, sizeof(pattern));
1128 if (pattern == NULL)
1129 return 1;
1130 if (addr == NULL)
1131 addr = "";
1132 return !fnmatch(pattern, addr, 0);
1133 }
1134
1135 static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
1136 {
1137 switch (f->type) {
1138 case SSF_S_AUTO:
1139 {
1140 if (s->local.family == AF_UNIX) {
1141 char *p;
1142
1143 memcpy(&p, s->local.data, sizeof(p));
1144 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
1145 strspn(p+1, "0123456789abcdef") == 5);
1146 }
1147 if (s->local.family == AF_PACKET)
1148 return s->lport == 0 && s->local.data[0] == 0;
1149 if (s->local.family == AF_NETLINK)
1150 return s->lport < 0;
1151
1152 return is_ephemeral(s->lport);
1153 }
1154 case SSF_DCOND:
1155 {
1156 struct aafilter *a = (void *)f->pred;
1157
1158 if (a->addr.family == AF_UNIX)
1159 return unix_match(&s->remote, &a->addr);
1160 if (a->port != -1 && a->port != s->rport)
1161 return 0;
1162 if (a->addr.bitlen) {
1163 do {
1164 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
1165 return 1;
1166 } while ((a = a->next) != NULL);
1167 return 0;
1168 }
1169 return 1;
1170 }
1171 case SSF_SCOND:
1172 {
1173 struct aafilter *a = (void *)f->pred;
1174
1175 if (a->addr.family == AF_UNIX)
1176 return unix_match(&s->local, &a->addr);
1177 if (a->port != -1 && a->port != s->lport)
1178 return 0;
1179 if (a->addr.bitlen) {
1180 do {
1181 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
1182 return 1;
1183 } while ((a = a->next) != NULL);
1184 return 0;
1185 }
1186 return 1;
1187 }
1188 case SSF_D_GE:
1189 {
1190 struct aafilter *a = (void *)f->pred;
1191
1192 return s->rport >= a->port;
1193 }
1194 case SSF_D_LE:
1195 {
1196 struct aafilter *a = (void *)f->pred;
1197
1198 return s->rport <= a->port;
1199 }
1200 case SSF_S_GE:
1201 {
1202 struct aafilter *a = (void *)f->pred;
1203
1204 return s->lport >= a->port;
1205 }
1206 case SSF_S_LE:
1207 {
1208 struct aafilter *a = (void *)f->pred;
1209
1210 return s->lport <= a->port;
1211 }
1212 case SSF_DEVCOND:
1213 {
1214 struct aafilter *a = (void *)f->pred;
1215
1216 return s->iface == a->iface;
1217 }
1218 case SSF_MARKMASK:
1219 {
1220 struct aafilter *a = (void *)f->pred;
1221
1222 return (s->mark & a->mask) == a->mark;
1223 }
1224 /* Yup. It is recursion. Sorry. */
1225 case SSF_AND:
1226 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
1227 case SSF_OR:
1228 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
1229 case SSF_NOT:
1230 return !run_ssfilter(f->pred, s);
1231 default:
1232 abort();
1233 }
1234 }
1235
1236 /* Relocate external jumps by reloc. */
1237 static void ssfilter_patch(char *a, int len, int reloc)
1238 {
1239 while (len > 0) {
1240 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
1241
1242 if (op->no == len+4)
1243 op->no += reloc;
1244 len -= op->yes;
1245 a += op->yes;
1246 }
1247 if (len < 0)
1248 abort();
1249 }
1250
1251 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
1252 {
1253 switch (f->type) {
1254 case SSF_S_AUTO:
1255 {
1256 if (!(*bytecode = malloc(4))) abort();
1257 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
1258 return 4;
1259 }
1260 case SSF_DCOND:
1261 case SSF_SCOND:
1262 {
1263 struct aafilter *a = (void *)f->pred;
1264 struct aafilter *b;
1265 char *ptr;
1266 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
1267 int len = 0;
1268
1269 for (b = a; b; b = b->next) {
1270 len += 4 + sizeof(struct inet_diag_hostcond);
1271 if (a->addr.family == AF_INET6)
1272 len += 16;
1273 else
1274 len += 4;
1275 if (b->next)
1276 len += 4;
1277 }
1278 if (!(ptr = malloc(len))) abort();
1279 *bytecode = ptr;
1280 for (b = a; b; b = b->next) {
1281 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
1282 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
1283 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
1284 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
1285
1286 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
1287 cond->family = a->addr.family;
1288 cond->port = a->port;
1289 cond->prefix_len = a->addr.bitlen;
1290 memcpy(cond->addr, a->addr.data, alen);
1291 ptr += oplen;
1292 if (b->next) {
1293 op = (struct inet_diag_bc_op *)ptr;
1294 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
1295 ptr += 4;
1296 }
1297 }
1298 return ptr - *bytecode;
1299 }
1300 case SSF_D_GE:
1301 {
1302 struct aafilter *x = (void *)f->pred;
1303
1304 if (!(*bytecode = malloc(8))) abort();
1305 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1306 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1307 return 8;
1308 }
1309 case SSF_D_LE:
1310 {
1311 struct aafilter *x = (void *)f->pred;
1312
1313 if (!(*bytecode = malloc(8))) abort();
1314 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1315 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1316 return 8;
1317 }
1318 case SSF_S_GE:
1319 {
1320 struct aafilter *x = (void *)f->pred;
1321
1322 if (!(*bytecode = malloc(8))) abort();
1323 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1324 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1325 return 8;
1326 }
1327 case SSF_S_LE:
1328 {
1329 struct aafilter *x = (void *)f->pred;
1330
1331 if (!(*bytecode = malloc(8))) abort();
1332 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1333 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1334 return 8;
1335 }
1336
1337 case SSF_AND:
1338 {
1339 char *a1 = NULL, *a2 = NULL, *a;
1340 int l1, l2;
1341
1342 l1 = ssfilter_bytecompile(f->pred, &a1);
1343 l2 = ssfilter_bytecompile(f->post, &a2);
1344 if (!l1 || !l2) {
1345 free(a1);
1346 free(a2);
1347 return 0;
1348 }
1349 if (!(a = malloc(l1+l2))) abort();
1350 memcpy(a, a1, l1);
1351 memcpy(a+l1, a2, l2);
1352 free(a1); free(a2);
1353 ssfilter_patch(a, l1, l2);
1354 *bytecode = a;
1355 return l1+l2;
1356 }
1357 case SSF_OR:
1358 {
1359 char *a1 = NULL, *a2 = NULL, *a;
1360 int l1, l2;
1361
1362 l1 = ssfilter_bytecompile(f->pred, &a1);
1363 l2 = ssfilter_bytecompile(f->post, &a2);
1364 if (!l1 || !l2) {
1365 free(a1);
1366 free(a2);
1367 return 0;
1368 }
1369 if (!(a = malloc(l1+l2+4))) abort();
1370 memcpy(a, a1, l1);
1371 memcpy(a+l1+4, a2, l2);
1372 free(a1); free(a2);
1373 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
1374 *bytecode = a;
1375 return l1+l2+4;
1376 }
1377 case SSF_NOT:
1378 {
1379 char *a1 = NULL, *a;
1380 int l1;
1381
1382 l1 = ssfilter_bytecompile(f->pred, &a1);
1383 if (!l1) {
1384 free(a1);
1385 return 0;
1386 }
1387 if (!(a = malloc(l1+4))) abort();
1388 memcpy(a, a1, l1);
1389 free(a1);
1390 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
1391 *bytecode = a;
1392 return l1+4;
1393 }
1394 case SSF_DEVCOND:
1395 {
1396 /* bytecompile for SSF_DEVCOND not supported yet */
1397 return 0;
1398 }
1399 case SSF_MARKMASK:
1400 {
1401 struct aafilter *a = (void *)f->pred;
1402 struct instr {
1403 struct inet_diag_bc_op op;
1404 struct inet_diag_markcond cond;
1405 };
1406 int inslen = sizeof(struct instr);
1407
1408 if (!(*bytecode = malloc(inslen))) abort();
1409 ((struct instr *)*bytecode)[0] = (struct instr) {
1410 { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
1411 { a->mark, a->mask},
1412 };
1413
1414 return inslen;
1415 }
1416 default:
1417 abort();
1418 }
1419 }
1420
1421 static int remember_he(struct aafilter *a, struct hostent *he)
1422 {
1423 char **ptr = he->h_addr_list;
1424 int cnt = 0;
1425 int len;
1426
1427 if (he->h_addrtype == AF_INET)
1428 len = 4;
1429 else if (he->h_addrtype == AF_INET6)
1430 len = 16;
1431 else
1432 return 0;
1433
1434 while (*ptr) {
1435 struct aafilter *b = a;
1436
1437 if (a->addr.bitlen) {
1438 if ((b = malloc(sizeof(*b))) == NULL)
1439 return cnt;
1440 *b = *a;
1441 a->next = b;
1442 }
1443 memcpy(b->addr.data, *ptr, len);
1444 b->addr.bytelen = len;
1445 b->addr.bitlen = len*8;
1446 b->addr.family = he->h_addrtype;
1447 ptr++;
1448 cnt++;
1449 }
1450 return cnt;
1451 }
1452
1453 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
1454 {
1455 static int notfirst;
1456 int cnt = 0;
1457 struct hostent *he;
1458
1459 a->addr.bitlen = 0;
1460 if (!notfirst) {
1461 sethostent(1);
1462 notfirst = 1;
1463 }
1464 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1465 if (he)
1466 cnt = remember_he(a, he);
1467 if (fam == AF_UNSPEC) {
1468 he = gethostbyname2(addr, AF_INET6);
1469 if (he)
1470 cnt += remember_he(a, he);
1471 }
1472 return !cnt;
1473 }
1474
1475 static int xll_initted;
1476
1477 static void xll_init(void)
1478 {
1479 struct rtnl_handle rth;
1480
1481 if (rtnl_open(&rth, 0) < 0)
1482 exit(1);
1483
1484 ll_init_map(&rth);
1485 rtnl_close(&rth);
1486 xll_initted = 1;
1487 }
1488
1489 static const char *xll_index_to_name(int index)
1490 {
1491 if (!xll_initted)
1492 xll_init();
1493 return ll_index_to_name(index);
1494 }
1495
1496 static int xll_name_to_index(const char *dev)
1497 {
1498 if (!xll_initted)
1499 xll_init();
1500 return ll_name_to_index(dev);
1501 }
1502
1503 void *parse_devcond(char *name)
1504 {
1505 struct aafilter a = { .iface = 0 };
1506 struct aafilter *res;
1507
1508 a.iface = xll_name_to_index(name);
1509 if (a.iface == 0) {
1510 char *end;
1511 unsigned long n;
1512
1513 n = strtoul(name, &end, 0);
1514 if (!end || end == name || *end || n > UINT_MAX)
1515 return NULL;
1516
1517 a.iface = n;
1518 }
1519
1520 res = malloc(sizeof(*res));
1521 *res = a;
1522
1523 return res;
1524 }
1525
1526 void *parse_hostcond(char *addr, bool is_port)
1527 {
1528 char *port = NULL;
1529 struct aafilter a = { .port = -1 };
1530 struct aafilter *res;
1531 int fam = preferred_family;
1532 struct filter *f = &current_filter;
1533
1534 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1535 char *p;
1536
1537 a.addr.family = AF_UNIX;
1538 if (strncmp(addr, "unix:", 5) == 0)
1539 addr += 5;
1540 p = strdup(addr);
1541 a.addr.bitlen = 8*strlen(p);
1542 memcpy(a.addr.data, &p, sizeof(p));
1543 fam = AF_UNIX;
1544 goto out;
1545 }
1546
1547 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1548 a.addr.family = AF_PACKET;
1549 a.addr.bitlen = 0;
1550 if (strncmp(addr, "link:", 5) == 0)
1551 addr += 5;
1552 port = strchr(addr, ':');
1553 if (port) {
1554 *port = 0;
1555 if (port[1] && strcmp(port+1, "*")) {
1556 if (get_integer(&a.port, port+1, 0)) {
1557 if ((a.port = xll_name_to_index(port+1)) <= 0)
1558 return NULL;
1559 }
1560 }
1561 }
1562 if (addr[0] && strcmp(addr, "*")) {
1563 unsigned short tmp;
1564
1565 a.addr.bitlen = 32;
1566 if (ll_proto_a2n(&tmp, addr))
1567 return NULL;
1568 a.addr.data[0] = ntohs(tmp);
1569 }
1570 fam = AF_PACKET;
1571 goto out;
1572 }
1573
1574 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1575 a.addr.family = AF_NETLINK;
1576 a.addr.bitlen = 0;
1577 if (strncmp(addr, "netlink:", 8) == 0)
1578 addr += 8;
1579 port = strchr(addr, ':');
1580 if (port) {
1581 *port = 0;
1582 if (port[1] && strcmp(port+1, "*")) {
1583 if (get_integer(&a.port, port+1, 0)) {
1584 if (strcmp(port+1, "kernel") == 0)
1585 a.port = 0;
1586 else
1587 return NULL;
1588 }
1589 }
1590 }
1591 if (addr[0] && strcmp(addr, "*")) {
1592 a.addr.bitlen = 32;
1593 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
1594 return NULL;
1595 }
1596 fam = AF_NETLINK;
1597 goto out;
1598 }
1599
1600 if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
1601 fam = AF_INET;
1602 if (!strncmp(addr, "inet:", 5))
1603 addr += 5;
1604 } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
1605 fam = AF_INET6;
1606 if (!strncmp(addr, "inet6:", 6))
1607 addr += 6;
1608 }
1609
1610 /* URL-like literal [] */
1611 if (addr[0] == '[') {
1612 addr++;
1613 if ((port = strchr(addr, ']')) == NULL)
1614 return NULL;
1615 *port++ = 0;
1616 } else if (addr[0] == '*') {
1617 port = addr+1;
1618 } else {
1619 port = strrchr(strchr(addr, '/') ? : addr, ':');
1620 }
1621
1622 if (is_port)
1623 port = addr;
1624
1625 if (port && *port) {
1626 if (*port == ':')
1627 *port++ = 0;
1628
1629 if (*port && *port != '*') {
1630 if (get_integer(&a.port, port, 0)) {
1631 struct servent *se1 = NULL;
1632 struct servent *se2 = NULL;
1633
1634 if (current_filter.dbs&(1<<UDP_DB))
1635 se1 = getservbyname(port, UDP_PROTO);
1636 if (current_filter.dbs&(1<<TCP_DB))
1637 se2 = getservbyname(port, TCP_PROTO);
1638 if (se1 && se2 && se1->s_port != se2->s_port) {
1639 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1640 return NULL;
1641 }
1642 if (!se1)
1643 se1 = se2;
1644 if (se1) {
1645 a.port = ntohs(se1->s_port);
1646 } else {
1647 struct scache *s;
1648
1649 for (s = rlist; s; s = s->next) {
1650 if ((s->proto == UDP_PROTO &&
1651 (current_filter.dbs&(1<<UDP_DB))) ||
1652 (s->proto == TCP_PROTO &&
1653 (current_filter.dbs&(1<<TCP_DB)))) {
1654 if (s->name && strcmp(s->name, port) == 0) {
1655 if (a.port > 0 && a.port != s->port) {
1656 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1657 return NULL;
1658 }
1659 a.port = s->port;
1660 }
1661 }
1662 }
1663 if (a.port <= 0) {
1664 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1665 return NULL;
1666 }
1667 }
1668 }
1669 }
1670 }
1671 if (!is_port && *addr && *addr != '*') {
1672 if (get_prefix_1(&a.addr, addr, fam)) {
1673 if (get_dns_host(&a, addr, fam)) {
1674 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1675 return NULL;
1676 }
1677 }
1678 }
1679
1680 out:
1681 if (fam != AF_UNSPEC) {
1682 int states = f->states;
1683 f->families = 0;
1684 filter_af_set(f, fam);
1685 filter_states_set(f, states);
1686 }
1687
1688 res = malloc(sizeof(*res));
1689 if (res)
1690 memcpy(res, &a, sizeof(a));
1691 return res;
1692 }
1693
1694 void *parse_markmask(const char *markmask)
1695 {
1696 struct aafilter a, *res;
1697
1698 if (strchr(markmask, '/')) {
1699 if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
1700 return NULL;
1701 } else {
1702 a.mask = 0xffffffff;
1703 if (sscanf(markmask, "%i", &a.mark) != 1)
1704 return NULL;
1705 }
1706
1707 res = malloc(sizeof(*res));
1708 if (res)
1709 memcpy(res, &a, sizeof(a));
1710 return res;
1711 }
1712
1713 static void proc_ctx_print(struct sockstat *s)
1714 {
1715 char *buf;
1716
1717 if (show_proc_ctx || show_sock_ctx) {
1718 if (find_entry(s->ino, &buf,
1719 (show_proc_ctx & show_sock_ctx) ?
1720 PROC_SOCK_CTX : PROC_CTX) > 0) {
1721 printf(" users:(%s)", buf);
1722 free(buf);
1723 }
1724 } else if (show_users) {
1725 if (find_entry(s->ino, &buf, USERS) > 0) {
1726 printf(" users:(%s)", buf);
1727 free(buf);
1728 }
1729 }
1730 }
1731
1732 static void inet_stats_print(struct sockstat *s)
1733 {
1734 sock_state_print(s);
1735
1736 inet_addr_print(&s->local, s->lport, s->iface);
1737 inet_addr_print(&s->remote, s->rport, 0);
1738
1739 proc_ctx_print(s);
1740 }
1741
1742 static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
1743 sockstat * s)
1744 {
1745 s->local.family = s->remote.family = family;
1746 if (family == AF_INET) {
1747 sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
1748 sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
1749 s->local.bytelen = s->remote.bytelen = 4;
1750 return 0;
1751 } else {
1752 sscanf(loc, "%08x%08x%08x%08x:%x",
1753 s->local.data,
1754 s->local.data + 1,
1755 s->local.data + 2,
1756 s->local.data + 3,
1757 &s->lport);
1758 sscanf(rem, "%08x%08x%08x%08x:%x",
1759 s->remote.data,
1760 s->remote.data + 1,
1761 s->remote.data + 2,
1762 s->remote.data + 3,
1763 &s->rport);
1764 s->local.bytelen = s->remote.bytelen = 16;
1765 return 0;
1766 }
1767 return -1;
1768 }
1769
1770 static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
1771 {
1772 char *p;
1773
1774 if ((p = strchr(line, ':')) == NULL)
1775 return -1;
1776
1777 *loc = p+2;
1778 if ((p = strchr(*loc, ':')) == NULL)
1779 return -1;
1780
1781 p[5] = 0;
1782 *rem = p+6;
1783 if ((p = strchr(*rem, ':')) == NULL)
1784 return -1;
1785
1786 p[5] = 0;
1787 *data = p+6;
1788 return 0;
1789 }
1790
1791 static char *sprint_bw(char *buf, double bw)
1792 {
1793 if (bw > 1000000.)
1794 sprintf(buf, "%.1fM", bw / 1000000.);
1795 else if (bw > 1000.)
1796 sprintf(buf, "%.1fK", bw / 1000.);
1797 else
1798 sprintf(buf, "%g", bw);
1799
1800 return buf;
1801 }
1802
1803 static void sctp_stats_print(struct sctp_info *s)
1804 {
1805 if (s->sctpi_tag)
1806 printf(" tag:%x", s->sctpi_tag);
1807 if (s->sctpi_state)
1808 printf(" state:%s", sctp_sstate_name[s->sctpi_state]);
1809 if (s->sctpi_rwnd)
1810 printf(" rwnd:%d", s->sctpi_rwnd);
1811 if (s->sctpi_unackdata)
1812 printf(" unackdata:%d", s->sctpi_unackdata);
1813 if (s->sctpi_penddata)
1814 printf(" penddata:%d", s->sctpi_penddata);
1815 if (s->sctpi_instrms)
1816 printf(" instrms:%d", s->sctpi_instrms);
1817 if (s->sctpi_outstrms)
1818 printf(" outstrms:%d", s->sctpi_outstrms);
1819 if (s->sctpi_inqueue)
1820 printf(" inqueue:%d", s->sctpi_inqueue);
1821 if (s->sctpi_outqueue)
1822 printf(" outqueue:%d", s->sctpi_outqueue);
1823 if (s->sctpi_overall_error)
1824 printf(" overerr:%d", s->sctpi_overall_error);
1825 if (s->sctpi_max_burst)
1826 printf(" maxburst:%d", s->sctpi_max_burst);
1827 if (s->sctpi_maxseg)
1828 printf(" maxseg:%d", s->sctpi_maxseg);
1829 if (s->sctpi_peer_rwnd)
1830 printf(" prwnd:%d", s->sctpi_peer_rwnd);
1831 if (s->sctpi_peer_tag)
1832 printf(" ptag:%x", s->sctpi_peer_tag);
1833 if (s->sctpi_peer_capable)
1834 printf(" pcapable:%d", s->sctpi_peer_capable);
1835 if (s->sctpi_peer_sack)
1836 printf(" psack:%d", s->sctpi_peer_sack);
1837 if (s->sctpi_s_autoclose)
1838 printf(" autoclose:%d", s->sctpi_s_autoclose);
1839 if (s->sctpi_s_adaptation_ind)
1840 printf(" adapind:%d", s->sctpi_s_adaptation_ind);
1841 if (s->sctpi_s_pd_point)
1842 printf(" pdpoint:%d", s->sctpi_s_pd_point);
1843 if (s->sctpi_s_nodelay)
1844 printf(" nodealy:%d", s->sctpi_s_nodelay);
1845 if (s->sctpi_s_disable_fragments)
1846 printf(" nofrag:%d", s->sctpi_s_disable_fragments);
1847 if (s->sctpi_s_v4mapped)
1848 printf(" v4mapped:%d", s->sctpi_s_v4mapped);
1849 if (s->sctpi_s_frag_interleave)
1850 printf(" fraginl:%d", s->sctpi_s_frag_interleave);
1851 }
1852
1853 static void tcp_stats_print(struct tcpstat *s)
1854 {
1855 char b1[64];
1856
1857 if (s->has_ts_opt)
1858 printf(" ts");
1859 if (s->has_sack_opt)
1860 printf(" sack");
1861 if (s->has_ecn_opt)
1862 printf(" ecn");
1863 if (s->has_ecnseen_opt)
1864 printf(" ecnseen");
1865 if (s->has_fastopen_opt)
1866 printf(" fastopen");
1867 if (s->cong_alg[0])
1868 printf(" %s", s->cong_alg);
1869 if (s->has_wscale_opt)
1870 printf(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
1871 if (s->rto)
1872 printf(" rto:%g", s->rto);
1873 if (s->backoff)
1874 printf(" backoff:%u", s->backoff);
1875 if (s->rtt)
1876 printf(" rtt:%g/%g", s->rtt, s->rttvar);
1877 if (s->ato)
1878 printf(" ato:%g", s->ato);
1879
1880 if (s->qack)
1881 printf(" qack:%d", s->qack);
1882 if (s->qack & 1)
1883 printf(" bidir");
1884
1885 if (s->mss)
1886 printf(" mss:%d", s->mss);
1887 if (s->rcv_mss)
1888 printf(" rcvmss:%d", s->rcv_mss);
1889 if (s->advmss)
1890 printf(" advmss:%d", s->advmss);
1891 if (s->cwnd)
1892 printf(" cwnd:%u", s->cwnd);
1893 if (s->ssthresh)
1894 printf(" ssthresh:%d", s->ssthresh);
1895
1896 if (s->bytes_acked)
1897 printf(" bytes_acked:%llu", s->bytes_acked);
1898 if (s->bytes_received)
1899 printf(" bytes_received:%llu", s->bytes_received);
1900 if (s->segs_out)
1901 printf(" segs_out:%u", s->segs_out);
1902 if (s->segs_in)
1903 printf(" segs_in:%u", s->segs_in);
1904 if (s->data_segs_out)
1905 printf(" data_segs_out:%u", s->data_segs_out);
1906 if (s->data_segs_in)
1907 printf(" data_segs_in:%u", s->data_segs_in);
1908
1909 if (s->dctcp && s->dctcp->enabled) {
1910 struct dctcpstat *dctcp = s->dctcp;
1911
1912 printf(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
1913 dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
1914 dctcp->ab_tot);
1915 } else if (s->dctcp) {
1916 printf(" dctcp:fallback_mode");
1917 }
1918
1919 if (s->bbr_info) {
1920 __u64 bw;
1921
1922 bw = s->bbr_info->bbr_bw_hi;
1923 bw <<= 32;
1924 bw |= s->bbr_info->bbr_bw_lo;
1925
1926 printf(" bbr:(bw:%sbps,mrtt:%g",
1927 sprint_bw(b1, bw * 8.0),
1928 (double)s->bbr_info->bbr_min_rtt / 1000.0);
1929 if (s->bbr_info->bbr_pacing_gain)
1930 printf(",pacing_gain:%g",
1931 (double)s->bbr_info->bbr_pacing_gain / 256.0);
1932 if (s->bbr_info->bbr_cwnd_gain)
1933 printf(",cwnd_gain:%g",
1934 (double)s->bbr_info->bbr_cwnd_gain / 256.0);
1935 printf(")");
1936 }
1937
1938 if (s->send_bps)
1939 printf(" send %sbps", sprint_bw(b1, s->send_bps));
1940 if (s->lastsnd)
1941 printf(" lastsnd:%u", s->lastsnd);
1942 if (s->lastrcv)
1943 printf(" lastrcv:%u", s->lastrcv);
1944 if (s->lastack)
1945 printf(" lastack:%u", s->lastack);
1946
1947 if (s->pacing_rate) {
1948 printf(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
1949 if (s->pacing_rate_max)
1950 printf("/%sbps", sprint_bw(b1,
1951 s->pacing_rate_max));
1952 }
1953
1954 if (s->delivery_rate)
1955 printf(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
1956 if (s->app_limited)
1957 printf(" app_limited");
1958
1959 if (s->busy_time) {
1960 printf(" busy:%llums", s->busy_time / 1000);
1961 if (s->rwnd_limited)
1962 printf(" rwnd_limited:%llums(%.1f%%)",
1963 s->rwnd_limited / 1000,
1964 100.0 * s->rwnd_limited / s->busy_time);
1965 if (s->sndbuf_limited)
1966 printf(" sndbuf_limited:%llums(%.1f%%)",
1967 s->sndbuf_limited / 1000,
1968 100.0 * s->sndbuf_limited / s->busy_time);
1969 }
1970
1971 if (s->unacked)
1972 printf(" unacked:%u", s->unacked);
1973 if (s->retrans || s->retrans_total)
1974 printf(" retrans:%u/%u", s->retrans, s->retrans_total);
1975 if (s->lost)
1976 printf(" lost:%u", s->lost);
1977 if (s->sacked && s->ss.state != SS_LISTEN)
1978 printf(" sacked:%u", s->sacked);
1979 if (s->fackets)
1980 printf(" fackets:%u", s->fackets);
1981 if (s->reordering != 3)
1982 printf(" reordering:%d", s->reordering);
1983 if (s->rcv_rtt)
1984 printf(" rcv_rtt:%g", s->rcv_rtt);
1985 if (s->rcv_space)
1986 printf(" rcv_space:%d", s->rcv_space);
1987 if (s->not_sent)
1988 printf(" notsent:%u", s->not_sent);
1989 if (s->min_rtt)
1990 printf(" minrtt:%g", s->min_rtt);
1991 }
1992
1993 static void tcp_timer_print(struct tcpstat *s)
1994 {
1995 static const char * const tmr_name[] = {
1996 "off",
1997 "on",
1998 "keepalive",
1999 "timewait",
2000 "persist",
2001 "unknown"
2002 };
2003
2004 if (s->timer) {
2005 if (s->timer > 4)
2006 s->timer = 5;
2007 printf(" timer:(%s,%s,%d)",
2008 tmr_name[s->timer],
2009 print_ms_timer(s->timeout),
2010 s->retrans);
2011 }
2012 }
2013
2014 static void sctp_timer_print(struct tcpstat *s)
2015 {
2016 if (s->timer)
2017 printf(" timer:(T3_RTX,%s,%d)",
2018 print_ms_timer(s->timeout), s->retrans);
2019 }
2020
2021 static int tcp_show_line(char *line, const struct filter *f, int family)
2022 {
2023 int rto = 0, ato = 0;
2024 struct tcpstat s = {};
2025 char *loc, *rem, *data;
2026 char opt[256];
2027 int n;
2028 int hz = get_user_hz();
2029
2030 if (proc_inet_split_line(line, &loc, &rem, &data))
2031 return -1;
2032
2033 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2034
2035 if (!(f->states & (1 << state)))
2036 return 0;
2037
2038 proc_parse_inet_addr(loc, rem, family, &s.ss);
2039
2040 if (f->f && run_ssfilter(f->f, &s.ss) == 0)
2041 return 0;
2042
2043 opt[0] = 0;
2044 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
2045 &s.ss.state, &s.ss.wq, &s.ss.rq,
2046 &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
2047 &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
2048 &s.ssthresh, opt);
2049
2050 if (n < 17)
2051 opt[0] = 0;
2052
2053 if (n < 12) {
2054 rto = 0;
2055 s.cwnd = 2;
2056 s.ssthresh = -1;
2057 ato = s.qack = 0;
2058 }
2059
2060 s.retrans = s.timer != 1 ? s.probes : s.retrans;
2061 s.timeout = (s.timeout * 1000 + hz - 1) / hz;
2062 s.ato = (double)ato / hz;
2063 s.qack /= 2;
2064 s.rto = (double)rto;
2065 s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
2066 s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
2067 s.ss.type = IPPROTO_TCP;
2068
2069 inet_stats_print(&s.ss);
2070
2071 if (show_options)
2072 tcp_timer_print(&s);
2073
2074 if (show_details) {
2075 sock_details_print(&s.ss);
2076 if (opt[0])
2077 printf(" opt:\"%s\"", opt);
2078 }
2079
2080 if (show_tcpinfo)
2081 tcp_stats_print(&s);
2082
2083 printf("\n");
2084 return 0;
2085 }
2086
2087 static int generic_record_read(FILE *fp,
2088 int (*worker)(char*, const struct filter *, int),
2089 const struct filter *f, int fam)
2090 {
2091 char line[256];
2092
2093 /* skip header */
2094 if (fgets(line, sizeof(line), fp) == NULL)
2095 goto outerr;
2096
2097 while (fgets(line, sizeof(line), fp) != NULL) {
2098 int n = strlen(line);
2099
2100 if (n == 0 || line[n-1] != '\n') {
2101 errno = -EINVAL;
2102 return -1;
2103 }
2104 line[n-1] = 0;
2105
2106 if (worker(line, f, fam) < 0)
2107 return 0;
2108 }
2109 outerr:
2110
2111 return ferror(fp) ? -1 : 0;
2112 }
2113
2114 static void print_skmeminfo(struct rtattr *tb[], int attrtype)
2115 {
2116 const __u32 *skmeminfo;
2117
2118 if (!tb[attrtype]) {
2119 if (attrtype == INET_DIAG_SKMEMINFO) {
2120 if (!tb[INET_DIAG_MEMINFO])
2121 return;
2122
2123 const struct inet_diag_meminfo *minfo =
2124 RTA_DATA(tb[INET_DIAG_MEMINFO]);
2125
2126 printf(" mem:(r%u,w%u,f%u,t%u)",
2127 minfo->idiag_rmem,
2128 minfo->idiag_wmem,
2129 minfo->idiag_fmem,
2130 minfo->idiag_tmem);
2131 }
2132 return;
2133 }
2134
2135 skmeminfo = RTA_DATA(tb[attrtype]);
2136
2137 printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
2138 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
2139 skmeminfo[SK_MEMINFO_RCVBUF],
2140 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
2141 skmeminfo[SK_MEMINFO_SNDBUF],
2142 skmeminfo[SK_MEMINFO_FWD_ALLOC],
2143 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
2144 skmeminfo[SK_MEMINFO_OPTMEM]);
2145
2146 if (RTA_PAYLOAD(tb[attrtype]) >=
2147 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
2148 printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
2149
2150 if (RTA_PAYLOAD(tb[attrtype]) >=
2151 (SK_MEMINFO_DROPS + 1) * sizeof(__u32))
2152 printf(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
2153
2154 printf(")");
2155 }
2156
2157 #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
2158
2159 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2160 struct rtattr *tb[])
2161 {
2162 double rtt = 0;
2163 struct tcpstat s = {};
2164
2165 s.ss.state = r->idiag_state;
2166
2167 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2168
2169 if (tb[INET_DIAG_INFO]) {
2170 struct tcp_info *info;
2171 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2172
2173 /* workaround for older kernels with less fields */
2174 if (len < sizeof(*info)) {
2175 info = alloca(sizeof(*info));
2176 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2177 memset((char *)info + len, 0, sizeof(*info) - len);
2178 } else
2179 info = RTA_DATA(tb[INET_DIAG_INFO]);
2180
2181 if (show_options) {
2182 s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
2183 s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
2184 s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
2185 s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
2186 s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
2187 }
2188
2189 if (tb[INET_DIAG_CONG])
2190 strncpy(s.cong_alg,
2191 rta_getattr_str(tb[INET_DIAG_CONG]),
2192 sizeof(s.cong_alg) - 1);
2193
2194 if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
2195 s.has_wscale_opt = true;
2196 s.snd_wscale = info->tcpi_snd_wscale;
2197 s.rcv_wscale = info->tcpi_rcv_wscale;
2198 }
2199
2200 if (info->tcpi_rto && info->tcpi_rto != 3000000)
2201 s.rto = (double)info->tcpi_rto / 1000;
2202
2203 s.backoff = info->tcpi_backoff;
2204 s.rtt = (double)info->tcpi_rtt / 1000;
2205 s.rttvar = (double)info->tcpi_rttvar / 1000;
2206 s.ato = (double)info->tcpi_ato / 1000;
2207 s.mss = info->tcpi_snd_mss;
2208 s.rcv_mss = info->tcpi_rcv_mss;
2209 s.advmss = info->tcpi_advmss;
2210 s.rcv_space = info->tcpi_rcv_space;
2211 s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
2212 s.lastsnd = info->tcpi_last_data_sent;
2213 s.lastrcv = info->tcpi_last_data_recv;
2214 s.lastack = info->tcpi_last_ack_recv;
2215 s.unacked = info->tcpi_unacked;
2216 s.retrans = info->tcpi_retrans;
2217 s.retrans_total = info->tcpi_total_retrans;
2218 s.lost = info->tcpi_lost;
2219 s.sacked = info->tcpi_sacked;
2220 s.reordering = info->tcpi_reordering;
2221 s.rcv_space = info->tcpi_rcv_space;
2222 s.cwnd = info->tcpi_snd_cwnd;
2223
2224 if (info->tcpi_snd_ssthresh < 0xFFFF)
2225 s.ssthresh = info->tcpi_snd_ssthresh;
2226
2227 rtt = (double) info->tcpi_rtt;
2228 if (tb[INET_DIAG_VEGASINFO]) {
2229 const struct tcpvegas_info *vinfo
2230 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
2231
2232 if (vinfo->tcpv_enabled &&
2233 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
2234 rtt = vinfo->tcpv_rtt;
2235 }
2236
2237 if (tb[INET_DIAG_DCTCPINFO]) {
2238 struct dctcpstat *dctcp = malloc(sizeof(struct
2239 dctcpstat));
2240
2241 const struct tcp_dctcp_info *dinfo
2242 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
2243
2244 dctcp->enabled = !!dinfo->dctcp_enabled;
2245 dctcp->ce_state = dinfo->dctcp_ce_state;
2246 dctcp->alpha = dinfo->dctcp_alpha;
2247 dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
2248 dctcp->ab_tot = dinfo->dctcp_ab_tot;
2249 s.dctcp = dctcp;
2250 }
2251
2252 if (tb[INET_DIAG_BBRINFO]) {
2253 const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
2254 int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
2255 sizeof(*s.bbr_info));
2256
2257 s.bbr_info = calloc(1, sizeof(*s.bbr_info));
2258 if (s.bbr_info && bbr_info)
2259 memcpy(s.bbr_info, bbr_info, len);
2260 }
2261
2262 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
2263 s.send_bps = (double) info->tcpi_snd_cwnd *
2264 (double)info->tcpi_snd_mss * 8000000. / rtt;
2265 }
2266
2267 if (info->tcpi_pacing_rate &&
2268 info->tcpi_pacing_rate != ~0ULL) {
2269 s.pacing_rate = info->tcpi_pacing_rate * 8.;
2270
2271 if (info->tcpi_max_pacing_rate &&
2272 info->tcpi_max_pacing_rate != ~0ULL)
2273 s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
2274 }
2275 s.bytes_acked = info->tcpi_bytes_acked;
2276 s.bytes_received = info->tcpi_bytes_received;
2277 s.segs_out = info->tcpi_segs_out;
2278 s.segs_in = info->tcpi_segs_in;
2279 s.data_segs_out = info->tcpi_data_segs_out;
2280 s.data_segs_in = info->tcpi_data_segs_in;
2281 s.not_sent = info->tcpi_notsent_bytes;
2282 if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
2283 s.min_rtt = (double) info->tcpi_min_rtt / 1000;
2284 s.delivery_rate = info->tcpi_delivery_rate * 8.;
2285 s.app_limited = info->tcpi_delivery_rate_app_limited;
2286 s.busy_time = info->tcpi_busy_time;
2287 s.rwnd_limited = info->tcpi_rwnd_limited;
2288 s.sndbuf_limited = info->tcpi_sndbuf_limited;
2289 tcp_stats_print(&s);
2290 free(s.dctcp);
2291 free(s.bbr_info);
2292 }
2293 }
2294
2295 static const char *format_host_sa(struct sockaddr_storage *sa)
2296 {
2297 union {
2298 struct sockaddr_in sin;
2299 struct sockaddr_in6 sin6;
2300 } *saddr = (void *)sa;
2301
2302 switch (sa->ss_family) {
2303 case AF_INET:
2304 return format_host(AF_INET, 4, &saddr->sin.sin_addr);
2305 case AF_INET6:
2306 return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
2307 default:
2308 return "";
2309 }
2310 }
2311
2312 static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2313 struct rtattr *tb[])
2314 {
2315 struct sockaddr_storage *sa;
2316 int len;
2317
2318 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2319
2320 if (tb[INET_DIAG_LOCALS]) {
2321 len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
2322 sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
2323
2324 printf("locals:%s", format_host_sa(sa));
2325 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2326 printf(",%s", format_host_sa(sa));
2327
2328 }
2329 if (tb[INET_DIAG_PEERS]) {
2330 len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
2331 sa = RTA_DATA(tb[INET_DIAG_PEERS]);
2332
2333 printf(" peers:%s", format_host_sa(sa));
2334 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2335 printf(",%s", format_host_sa(sa));
2336 }
2337 if (tb[INET_DIAG_INFO]) {
2338 struct sctp_info *info;
2339 len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2340
2341 /* workaround for older kernels with less fields */
2342 if (len < sizeof(*info)) {
2343 info = alloca(sizeof(*info));
2344 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2345 memset((char *)info + len, 0, sizeof(*info) - len);
2346 } else
2347 info = RTA_DATA(tb[INET_DIAG_INFO]);
2348
2349 sctp_stats_print(info);
2350 }
2351 }
2352
2353 static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
2354 {
2355 struct rtattr *tb[INET_DIAG_MAX+1];
2356 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2357
2358 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2359 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2360
2361 s->state = r->idiag_state;
2362 s->local.family = s->remote.family = r->idiag_family;
2363 s->lport = ntohs(r->id.idiag_sport);
2364 s->rport = ntohs(r->id.idiag_dport);
2365 s->wq = r->idiag_wqueue;
2366 s->rq = r->idiag_rqueue;
2367 s->ino = r->idiag_inode;
2368 s->uid = r->idiag_uid;
2369 s->iface = r->id.idiag_if;
2370 s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
2371
2372 s->mark = 0;
2373 if (tb[INET_DIAG_MARK])
2374 s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]);
2375 if (tb[INET_DIAG_PROTOCOL])
2376 s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2377 else
2378 s->raw_prot = 0;
2379
2380 if (s->local.family == AF_INET)
2381 s->local.bytelen = s->remote.bytelen = 4;
2382 else
2383 s->local.bytelen = s->remote.bytelen = 16;
2384
2385 memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
2386 memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
2387 }
2388
2389 static int inet_show_sock(struct nlmsghdr *nlh,
2390 struct sockstat *s)
2391 {
2392 struct rtattr *tb[INET_DIAG_MAX+1];
2393 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2394
2395 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2396 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2397
2398 if (tb[INET_DIAG_PROTOCOL])
2399 s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2400
2401 inet_stats_print(s);
2402
2403 if (show_options) {
2404 struct tcpstat t = {};
2405
2406 t.timer = r->idiag_timer;
2407 t.timeout = r->idiag_expires;
2408 t.retrans = r->idiag_retrans;
2409 if (s->type == IPPROTO_SCTP)
2410 sctp_timer_print(&t);
2411 else
2412 tcp_timer_print(&t);
2413 }
2414
2415 if (show_details) {
2416 sock_details_print(s);
2417 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY]) {
2418 unsigned char v6only;
2419
2420 v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]);
2421 printf(" v6only:%u", v6only);
2422 }
2423 if (tb[INET_DIAG_SHUTDOWN]) {
2424 unsigned char mask;
2425
2426 mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]);
2427 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2428 }
2429 }
2430
2431 if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
2432 printf("\n\t");
2433 if (s->type == IPPROTO_SCTP)
2434 sctp_show_info(nlh, r, tb);
2435 else
2436 tcp_show_info(nlh, r, tb);
2437 }
2438 sctp_ino = s->ino;
2439
2440 printf("\n");
2441 return 0;
2442 }
2443
2444 static int tcpdiag_send(int fd, int protocol, struct filter *f)
2445 {
2446 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2447 struct {
2448 struct nlmsghdr nlh;
2449 struct inet_diag_req r;
2450 } req = {
2451 .nlh.nlmsg_len = sizeof(req),
2452 .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
2453 .nlh.nlmsg_seq = MAGIC_SEQ,
2454 .r.idiag_family = AF_INET,
2455 .r.idiag_states = f->states,
2456 };
2457 char *bc = NULL;
2458 int bclen;
2459 struct msghdr msg;
2460 struct rtattr rta;
2461 struct iovec iov[3];
2462 int iovlen = 1;
2463
2464 if (protocol == IPPROTO_UDP)
2465 return -1;
2466
2467 if (protocol == IPPROTO_TCP)
2468 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
2469 else
2470 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
2471 if (show_mem) {
2472 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2473 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2474 }
2475
2476 if (show_tcpinfo) {
2477 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2478 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2479 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2480 }
2481
2482 iov[0] = (struct iovec){
2483 .iov_base = &req,
2484 .iov_len = sizeof(req)
2485 };
2486 if (f->f) {
2487 bclen = ssfilter_bytecompile(f->f, &bc);
2488 if (bclen) {
2489 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2490 rta.rta_len = RTA_LENGTH(bclen);
2491 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2492 iov[2] = (struct iovec){ bc, bclen };
2493 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2494 iovlen = 3;
2495 }
2496 }
2497
2498 msg = (struct msghdr) {
2499 .msg_name = (void *)&nladdr,
2500 .msg_namelen = sizeof(nladdr),
2501 .msg_iov = iov,
2502 .msg_iovlen = iovlen,
2503 };
2504
2505 if (sendmsg(fd, &msg, 0) < 0) {
2506 close(fd);
2507 return -1;
2508 }
2509
2510 return 0;
2511 }
2512
2513 static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
2514 {
2515 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2516 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2517 char *bc = NULL;
2518 int bclen;
2519 struct msghdr msg;
2520 struct rtattr rta;
2521 struct iovec iov[3];
2522 int iovlen = 1;
2523
2524 if (family == PF_UNSPEC)
2525 return tcpdiag_send(fd, protocol, f);
2526
2527 memset(&req.r, 0, sizeof(req.r));
2528 req.r.sdiag_family = family;
2529 req.r.sdiag_protocol = protocol;
2530 req.r.idiag_states = f->states;
2531 if (show_mem) {
2532 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
2533 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
2534 }
2535
2536 if (show_tcpinfo) {
2537 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
2538 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
2539 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
2540 }
2541
2542 iov[0] = (struct iovec){
2543 .iov_base = &req,
2544 .iov_len = sizeof(req)
2545 };
2546 if (f->f) {
2547 bclen = ssfilter_bytecompile(f->f, &bc);
2548 if (bclen) {
2549 rta.rta_type = INET_DIAG_REQ_BYTECODE;
2550 rta.rta_len = RTA_LENGTH(bclen);
2551 iov[1] = (struct iovec){ &rta, sizeof(rta) };
2552 iov[2] = (struct iovec){ bc, bclen };
2553 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
2554 iovlen = 3;
2555 }
2556 }
2557
2558 msg = (struct msghdr) {
2559 .msg_name = (void *)&nladdr,
2560 .msg_namelen = sizeof(nladdr),
2561 .msg_iov = iov,
2562 .msg_iovlen = iovlen,
2563 };
2564
2565 if (sendmsg(fd, &msg, 0) < 0) {
2566 close(fd);
2567 return -1;
2568 }
2569
2570 return 0;
2571 }
2572
2573 struct inet_diag_arg {
2574 struct filter *f;
2575 int protocol;
2576 struct rtnl_handle *rth;
2577 };
2578
2579 static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
2580 {
2581 struct inet_diag_msg *d = NLMSG_DATA(h);
2582 struct inet_diag_arg *diag_arg = arg;
2583 struct rtnl_handle *rth = diag_arg->rth;
2584
2585 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
2586
2587 req.nlh.nlmsg_type = SOCK_DESTROY;
2588 req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
2589 req.nlh.nlmsg_seq = ++rth->seq;
2590 req.r.sdiag_family = d->idiag_family;
2591 req.r.sdiag_protocol = diag_arg->protocol;
2592 req.r.id = d->id;
2593
2594 if (diag_arg->protocol == IPPROTO_RAW) {
2595 struct inet_diag_req_raw *raw = (void *)&req.r;
2596
2597 BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
2598 raw->sdiag_raw_protocol = s->raw_prot;
2599 }
2600
2601 return rtnl_talk(rth, &req.nlh, NULL, 0);
2602 }
2603
2604 static int show_one_inet_sock(const struct sockaddr_nl *addr,
2605 struct nlmsghdr *h, void *arg)
2606 {
2607 int err;
2608 struct inet_diag_arg *diag_arg = arg;
2609 struct inet_diag_msg *r = NLMSG_DATA(h);
2610 struct sockstat s = {};
2611
2612 if (!(diag_arg->f->families & (1 << r->idiag_family)))
2613 return 0;
2614
2615 parse_diag_msg(h, &s);
2616 s.type = diag_arg->protocol;
2617
2618 if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
2619 return 0;
2620
2621 if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
2622 if (errno == EOPNOTSUPP || errno == ENOENT) {
2623 /* Socket can't be closed, or is already closed. */
2624 return 0;
2625 } else {
2626 perror("SOCK_DESTROY answers");
2627 return -1;
2628 }
2629 }
2630
2631 err = inet_show_sock(h, &s);
2632 if (err < 0)
2633 return err;
2634
2635 return 0;
2636 }
2637
2638 static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
2639 {
2640 int err = 0;
2641 struct rtnl_handle rth, rth2;
2642 int family = PF_INET;
2643 struct inet_diag_arg arg = { .f = f, .protocol = protocol };
2644
2645 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
2646 return -1;
2647
2648 if (f->kill) {
2649 if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
2650 rtnl_close(&rth);
2651 return -1;
2652 }
2653 arg.rth = &rth2;
2654 }
2655
2656 rth.dump = MAGIC_SEQ;
2657 rth.dump_fp = dump_fp;
2658 if (preferred_family == PF_INET6)
2659 family = PF_INET6;
2660
2661 again:
2662 if ((err = sockdiag_send(family, rth.fd, protocol, f)))
2663 goto Exit;
2664
2665 if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
2666 if (family != PF_UNSPEC) {
2667 family = PF_UNSPEC;
2668 goto again;
2669 }
2670 goto Exit;
2671 }
2672 if (family == PF_INET && preferred_family != PF_INET) {
2673 family = PF_INET6;
2674 goto again;
2675 }
2676
2677 Exit:
2678 rtnl_close(&rth);
2679 if (arg.rth)
2680 rtnl_close(arg.rth);
2681 return err;
2682 }
2683
2684 static int tcp_show_netlink_file(struct filter *f)
2685 {
2686 FILE *fp;
2687 char buf[16384];
2688 int err = -1;
2689
2690 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
2691 perror("fopen($TCPDIAG_FILE)");
2692 return err;
2693 }
2694
2695 while (1) {
2696 int status, err2;
2697 struct nlmsghdr *h = (struct nlmsghdr *)buf;
2698 struct sockstat s = {};
2699
2700 status = fread(buf, 1, sizeof(*h), fp);
2701 if (status < 0) {
2702 perror("Reading header from $TCPDIAG_FILE");
2703 break;
2704 }
2705 if (status != sizeof(*h)) {
2706 perror("Unexpected EOF reading $TCPDIAG_FILE");
2707 break;
2708 }
2709
2710 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
2711
2712 if (status < 0) {
2713 perror("Reading $TCPDIAG_FILE");
2714 break;
2715 }
2716 if (status + sizeof(*h) < h->nlmsg_len) {
2717 perror("Unexpected EOF reading $TCPDIAG_FILE");
2718 break;
2719 }
2720
2721 /* The only legal exit point */
2722 if (h->nlmsg_type == NLMSG_DONE) {
2723 err = 0;
2724 break;
2725 }
2726
2727 if (h->nlmsg_type == NLMSG_ERROR) {
2728 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
2729
2730 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
2731 fprintf(stderr, "ERROR truncated\n");
2732 } else {
2733 errno = -err->error;
2734 perror("TCPDIAG answered");
2735 }
2736 break;
2737 }
2738
2739 parse_diag_msg(h, &s);
2740 s.type = IPPROTO_TCP;
2741
2742 if (f && f->f && run_ssfilter(f->f, &s) == 0)
2743 continue;
2744
2745 err2 = inet_show_sock(h, &s);
2746 if (err2 < 0) {
2747 err = err2;
2748 break;
2749 }
2750 }
2751
2752 fclose(fp);
2753 return err;
2754 }
2755
2756 static int tcp_show(struct filter *f)
2757 {
2758 FILE *fp = NULL;
2759 char *buf = NULL;
2760 int bufsize = 64*1024;
2761
2762 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2763 return 0;
2764
2765 dg_proto = TCP_PROTO;
2766
2767 if (getenv("TCPDIAG_FILE"))
2768 return tcp_show_netlink_file(f);
2769
2770 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
2771 && inet_show_netlink(f, NULL, IPPROTO_TCP) == 0)
2772 return 0;
2773
2774 /* Sigh... We have to parse /proc/net/tcp... */
2775
2776
2777 /* Estimate amount of sockets and try to allocate
2778 * huge buffer to read all the table at one read.
2779 * Limit it by 16MB though. The assumption is: as soon as
2780 * kernel was able to hold information about N connections,
2781 * it is able to give us some memory for snapshot.
2782 */
2783 if (1) {
2784 get_slabstat(&slabstat);
2785
2786 int guess = slabstat.socks+slabstat.tcp_syns;
2787
2788 if (f->states&(1<<SS_TIME_WAIT))
2789 guess += slabstat.tcp_tws;
2790 if (guess > (16*1024*1024)/128)
2791 guess = (16*1024*1024)/128;
2792 guess *= 128;
2793 if (guess > bufsize)
2794 bufsize = guess;
2795 }
2796 while (bufsize >= 64*1024) {
2797 if ((buf = malloc(bufsize)) != NULL)
2798 break;
2799 bufsize /= 2;
2800 }
2801 if (buf == NULL) {
2802 errno = ENOMEM;
2803 return -1;
2804 }
2805
2806 if (f->families & (1<<AF_INET)) {
2807 if ((fp = net_tcp_open()) == NULL)
2808 goto outerr;
2809
2810 setbuffer(fp, buf, bufsize);
2811 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
2812 goto outerr;
2813 fclose(fp);
2814 }
2815
2816 if ((f->families & (1<<AF_INET6)) &&
2817 (fp = net_tcp6_open()) != NULL) {
2818 setbuffer(fp, buf, bufsize);
2819 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
2820 goto outerr;
2821 fclose(fp);
2822 }
2823
2824 free(buf);
2825 return 0;
2826
2827 outerr:
2828 do {
2829 int saved_errno = errno;
2830
2831 free(buf);
2832 if (fp)
2833 fclose(fp);
2834 errno = saved_errno;
2835 return -1;
2836 } while (0);
2837 }
2838
2839 static int dccp_show(struct filter *f)
2840 {
2841 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2842 return 0;
2843
2844 if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT")
2845 && inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0)
2846 return 0;
2847
2848 return 0;
2849 }
2850
2851 static int sctp_show(struct filter *f)
2852 {
2853 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2854 return 0;
2855
2856 if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
2857 && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
2858 return 0;
2859
2860 return 0;
2861 }
2862
2863 static int dgram_show_line(char *line, const struct filter *f, int family)
2864 {
2865 struct sockstat s = {};
2866 char *loc, *rem, *data;
2867 char opt[256];
2868 int n;
2869
2870 if (proc_inet_split_line(line, &loc, &rem, &data))
2871 return -1;
2872
2873 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2874
2875 if (!(f->states & (1 << state)))
2876 return 0;
2877
2878 proc_parse_inet_addr(loc, rem, family, &s);
2879
2880 if (f->f && run_ssfilter(f->f, &s) == 0)
2881 return 0;
2882
2883 opt[0] = 0;
2884 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
2885 &s.state, &s.wq, &s.rq,
2886 &s.uid, &s.ino,
2887 &s.refcnt, &s.sk, opt);
2888
2889 if (n < 9)
2890 opt[0] = 0;
2891
2892 s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
2893 inet_stats_print(&s);
2894
2895 if (show_details && opt[0])
2896 printf(" opt:\"%s\"", opt);
2897
2898 printf("\n");
2899 return 0;
2900 }
2901
2902 static int udp_show(struct filter *f)
2903 {
2904 FILE *fp = NULL;
2905
2906 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2907 return 0;
2908
2909 dg_proto = UDP_PROTO;
2910
2911 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
2912 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
2913 return 0;
2914
2915 if (f->families&(1<<AF_INET)) {
2916 if ((fp = net_udp_open()) == NULL)
2917 goto outerr;
2918 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2919 goto outerr;
2920 fclose(fp);
2921 }
2922
2923 if ((f->families&(1<<AF_INET6)) &&
2924 (fp = net_udp6_open()) != NULL) {
2925 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2926 goto outerr;
2927 fclose(fp);
2928 }
2929 return 0;
2930
2931 outerr:
2932 do {
2933 int saved_errno = errno;
2934
2935 if (fp)
2936 fclose(fp);
2937 errno = saved_errno;
2938 return -1;
2939 } while (0);
2940 }
2941
2942 static int raw_show(struct filter *f)
2943 {
2944 FILE *fp = NULL;
2945
2946 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
2947 return 0;
2948
2949 dg_proto = RAW_PROTO;
2950
2951 if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
2952 inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
2953 return 0;
2954
2955 if (f->families&(1<<AF_INET)) {
2956 if ((fp = net_raw_open()) == NULL)
2957 goto outerr;
2958 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
2959 goto outerr;
2960 fclose(fp);
2961 }
2962
2963 if ((f->families&(1<<AF_INET6)) &&
2964 (fp = net_raw6_open()) != NULL) {
2965 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
2966 goto outerr;
2967 fclose(fp);
2968 }
2969 return 0;
2970
2971 outerr:
2972 do {
2973 int saved_errno = errno;
2974
2975 if (fp)
2976 fclose(fp);
2977 errno = saved_errno;
2978 return -1;
2979 } while (0);
2980 }
2981
2982 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
2983
2984 static void unix_list_drop_first(struct sockstat **list)
2985 {
2986 struct sockstat *s = *list;
2987
2988 (*list) = (*list)->next;
2989 free(s->name);
2990 free(s);
2991 }
2992
2993 static bool unix_type_skip(struct sockstat *s, struct filter *f)
2994 {
2995 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
2996 return true;
2997 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
2998 return true;
2999 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
3000 return true;
3001 return false;
3002 }
3003
3004 static void unix_stats_print(struct sockstat *s, struct filter *f)
3005 {
3006 char port_name[30] = {};
3007
3008 sock_state_print(s);
3009
3010 sock_addr_print(s->name ?: "*", " ",
3011 int_to_str(s->lport, port_name), NULL);
3012 sock_addr_print(s->peer_name ?: "*", " ",
3013 int_to_str(s->rport, port_name), NULL);
3014
3015 proc_ctx_print(s);
3016 }
3017
3018 static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
3019 void *arg)
3020 {
3021 struct filter *f = (struct filter *)arg;
3022 struct unix_diag_msg *r = NLMSG_DATA(nlh);
3023 struct rtattr *tb[UNIX_DIAG_MAX+1];
3024 char name[128];
3025 struct sockstat stat = { .name = "*", .peer_name = "*" };
3026
3027 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
3028 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3029
3030 stat.type = r->udiag_type;
3031 stat.state = r->udiag_state;
3032 stat.ino = stat.lport = r->udiag_ino;
3033 stat.local.family = stat.remote.family = AF_UNIX;
3034
3035 if (unix_type_skip(&stat, f))
3036 return 0;
3037
3038 if (tb[UNIX_DIAG_RQLEN]) {
3039 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
3040
3041 stat.rq = rql->udiag_rqueue;
3042 stat.wq = rql->udiag_wqueue;
3043 }
3044 if (tb[UNIX_DIAG_NAME]) {
3045 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
3046
3047 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
3048 name[len] = '\0';
3049 if (name[0] == '\0') {
3050 int i;
3051 for (i = 0; i < len; i++)
3052 if (name[i] == '\0')
3053 name[i] = '@';
3054 }
3055 stat.name = &name[0];
3056 memcpy(stat.local.data, &stat.name, sizeof(stat.name));
3057 }
3058 if (tb[UNIX_DIAG_PEER])
3059 stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
3060
3061 if (f->f && run_ssfilter(f->f, &stat) == 0)
3062 return 0;
3063
3064 unix_stats_print(&stat, f);
3065
3066 if (show_mem)
3067 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
3068 if (show_details) {
3069 if (tb[UNIX_DIAG_SHUTDOWN]) {
3070 unsigned char mask;
3071
3072 mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]);
3073 printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3074 }
3075 }
3076 printf("\n");
3077
3078 return 0;
3079 }
3080
3081 static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
3082 size_t size, rtnl_filter_t show_one_sock)
3083 {
3084 int ret = -1;
3085 struct rtnl_handle rth;
3086
3087 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3088 return -1;
3089
3090 rth.dump = MAGIC_SEQ;
3091
3092 if (rtnl_send(&rth, req, size) < 0)
3093 goto Exit;
3094
3095 if (rtnl_dump_filter(&rth, show_one_sock, f))
3096 goto Exit;
3097
3098 ret = 0;
3099 Exit:
3100 rtnl_close(&rth);
3101 return ret;
3102 }
3103
3104 static int unix_show_netlink(struct filter *f)
3105 {
3106 DIAG_REQUEST(req, struct unix_diag_req r);
3107
3108 req.r.sdiag_family = AF_UNIX;
3109 req.r.udiag_states = f->states;
3110 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
3111 if (show_mem)
3112 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
3113
3114 return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
3115 }
3116
3117 static int unix_show(struct filter *f)
3118 {
3119 FILE *fp;
3120 char buf[256];
3121 char name[128];
3122 int newformat = 0;
3123 int cnt;
3124 struct sockstat *list = NULL;
3125 const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
3126 SS_ESTABLISHED, SS_CLOSING };
3127
3128 if (!filter_af_get(f, AF_UNIX))
3129 return 0;
3130
3131 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
3132 && unix_show_netlink(f) == 0)
3133 return 0;
3134
3135 if ((fp = net_unix_open()) == NULL)
3136 return -1;
3137 if (!fgets(buf, sizeof(buf), fp)) {
3138 fclose(fp);
3139 return -1;
3140 }
3141
3142 if (memcmp(buf, "Peer", 4) == 0)
3143 newformat = 1;
3144 cnt = 0;
3145
3146 while (fgets(buf, sizeof(buf), fp)) {
3147 struct sockstat *u, **insp;
3148 int flags;
3149
3150 if (!(u = calloc(1, sizeof(*u))))
3151 break;
3152
3153 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
3154 &u->rport, &u->rq, &u->wq, &flags, &u->type,
3155 &u->state, &u->ino, name) < 8)
3156 name[0] = 0;
3157
3158 u->lport = u->ino;
3159 u->local.family = u->remote.family = AF_UNIX;
3160
3161 if (flags & (1 << 16)) {
3162 u->state = SS_LISTEN;
3163 } else if (u->state > 0 &&
3164 u->state <= ARRAY_SIZE(unix_state_map)) {
3165 u->state = unix_state_map[u->state-1];
3166 if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
3167 u->state = SS_ESTABLISHED;
3168 }
3169 if (unix_type_skip(u, f) ||
3170 !(f->states & (1 << u->state))) {
3171 free(u);
3172 continue;
3173 }
3174
3175 if (!newformat) {
3176 u->rport = 0;
3177 u->rq = 0;
3178 u->wq = 0;
3179 }
3180
3181 if (name[0]) {
3182 u->name = strdup(name);
3183 if (!u->name) {
3184 free(u);
3185 break;
3186 }
3187 }
3188
3189 if (u->rport) {
3190 struct sockstat *p;
3191
3192 for (p = list; p; p = p->next) {
3193 if (u->rport == p->lport)
3194 break;
3195 }
3196 if (!p)
3197 u->peer_name = "?";
3198 else
3199 u->peer_name = p->name ? : "*";
3200 }
3201
3202 if (f->f) {
3203 struct sockstat st = {
3204 .local.family = AF_UNIX,
3205 .remote.family = AF_UNIX,
3206 };
3207
3208 memcpy(st.local.data, &u->name, sizeof(u->name));
3209 if (strcmp(u->peer_name, "*"))
3210 memcpy(st.remote.data, &u->peer_name,
3211 sizeof(u->peer_name));
3212 if (run_ssfilter(f->f, &st) == 0) {
3213 free(u->name);
3214 free(u);
3215 continue;
3216 }
3217 }
3218
3219 insp = &list;
3220 while (*insp) {
3221 if (u->type < (*insp)->type ||
3222 (u->type == (*insp)->type &&
3223 u->ino < (*insp)->ino))
3224 break;
3225 insp = &(*insp)->next;
3226 }
3227 u->next = *insp;
3228 *insp = u;
3229
3230 if (++cnt > MAX_UNIX_REMEMBER) {
3231 while (list) {
3232 unix_stats_print(list, f);
3233 printf("\n");
3234
3235 unix_list_drop_first(&list);
3236 }
3237 cnt = 0;
3238 }
3239 }
3240 fclose(fp);
3241 while (list) {
3242 unix_stats_print(list, f);
3243 printf("\n");
3244
3245 unix_list_drop_first(&list);
3246 }
3247
3248 return 0;
3249 }
3250
3251 static int packet_stats_print(struct sockstat *s, const struct filter *f)
3252 {
3253 const char *addr, *port;
3254 char ll_name[16];
3255
3256 s->local.family = s->remote.family = AF_PACKET;
3257
3258 if (f->f) {
3259 s->local.data[0] = s->prot;
3260 if (run_ssfilter(f->f, s) == 0)
3261 return 1;
3262 }
3263
3264 sock_state_print(s);
3265
3266 if (s->prot == 3)
3267 addr = "*";
3268 else
3269 addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
3270
3271 if (s->iface == 0)
3272 port = "*";
3273 else
3274 port = xll_index_to_name(s->iface);
3275
3276 sock_addr_print(addr, ":", port, NULL);
3277 sock_addr_print("", "*", "", NULL);
3278
3279 proc_ctx_print(s);
3280
3281 if (show_details)
3282 sock_details_print(s);
3283
3284 return 0;
3285 }
3286
3287 static void packet_show_ring(struct packet_diag_ring *ring)
3288 {
3289 printf("blk_size:%d", ring->pdr_block_size);
3290 printf(",blk_nr:%d", ring->pdr_block_nr);
3291 printf(",frm_size:%d", ring->pdr_frame_size);
3292 printf(",frm_nr:%d", ring->pdr_frame_nr);
3293 printf(",tmo:%d", ring->pdr_retire_tmo);
3294 printf(",features:0x%x", ring->pdr_features);
3295 }
3296
3297 static int packet_show_sock(const struct sockaddr_nl *addr,
3298 struct nlmsghdr *nlh, void *arg)
3299 {
3300 const struct filter *f = arg;
3301 struct packet_diag_msg *r = NLMSG_DATA(nlh);
3302 struct packet_diag_info *pinfo = NULL;
3303 struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
3304 struct rtattr *tb[PACKET_DIAG_MAX+1];
3305 struct sockstat stat = {};
3306 uint32_t fanout = 0;
3307 bool has_fanout = false;
3308
3309 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
3310 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3311
3312 /* use /proc/net/packet if all info are not available */
3313 if (!tb[PACKET_DIAG_MEMINFO])
3314 return -1;
3315
3316 stat.type = r->pdiag_type;
3317 stat.prot = r->pdiag_num;
3318 stat.ino = r->pdiag_ino;
3319 stat.state = SS_CLOSE;
3320 stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
3321
3322 if (tb[PACKET_DIAG_MEMINFO]) {
3323 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
3324
3325 stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3326 }
3327
3328 if (tb[PACKET_DIAG_INFO]) {
3329 pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
3330 stat.lport = stat.iface = pinfo->pdi_index;
3331 }
3332
3333 if (tb[PACKET_DIAG_UID])
3334 stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]);
3335
3336 if (tb[PACKET_DIAG_RX_RING])
3337 ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
3338
3339 if (tb[PACKET_DIAG_TX_RING])
3340 ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
3341
3342 if (tb[PACKET_DIAG_FANOUT]) {
3343 has_fanout = true;
3344 fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]);
3345 }
3346
3347 if (packet_stats_print(&stat, f))
3348 return 0;
3349
3350 if (show_details) {
3351 if (pinfo) {
3352 printf("\n\tver:%d", pinfo->pdi_version);
3353 printf(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
3354 printf(" flags( ");
3355 if (pinfo->pdi_flags & PDI_RUNNING)
3356 printf("running");
3357 if (pinfo->pdi_flags & PDI_AUXDATA)
3358 printf(" auxdata");
3359 if (pinfo->pdi_flags & PDI_ORIGDEV)
3360 printf(" origdev");
3361 if (pinfo->pdi_flags & PDI_VNETHDR)
3362 printf(" vnethdr");
3363 if (pinfo->pdi_flags & PDI_LOSS)
3364 printf(" loss");
3365 if (!pinfo->pdi_flags)
3366 printf("0");
3367 printf(" )");
3368 }
3369 if (ring_rx) {
3370 printf("\n\tring_rx(");
3371 packet_show_ring(ring_rx);
3372 printf(")");
3373 }
3374 if (ring_tx) {
3375 printf("\n\tring_tx(");
3376 packet_show_ring(ring_tx);
3377 printf(")");
3378 }
3379 if (has_fanout) {
3380 uint16_t type = (fanout >> 16) & 0xffff;
3381
3382 printf("\n\tfanout(");
3383 printf("id:%d,", fanout & 0xffff);
3384 printf("type:");
3385
3386 if (type == 0)
3387 printf("hash");
3388 else if (type == 1)
3389 printf("lb");
3390 else if (type == 2)
3391 printf("cpu");
3392 else if (type == 3)
3393 printf("roll");
3394 else if (type == 4)
3395 printf("random");
3396 else if (type == 5)
3397 printf("qm");
3398 else
3399 printf("0x%x", type);
3400
3401 printf(")");
3402 }
3403 }
3404
3405 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
3406 struct sock_filter *fil =
3407 RTA_DATA(tb[PACKET_DIAG_FILTER]);
3408 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
3409 sizeof(struct sock_filter);
3410
3411 printf("\n\tbpf filter (%d): ", num);
3412 while (num) {
3413 printf(" 0x%02x %u %u %u,",
3414 fil->code, fil->jt, fil->jf, fil->k);
3415 num--;
3416 fil++;
3417 }
3418 }
3419 printf("\n");
3420 return 0;
3421 }
3422
3423 static int packet_show_netlink(struct filter *f)
3424 {
3425 DIAG_REQUEST(req, struct packet_diag_req r);
3426
3427 req.r.sdiag_family = AF_PACKET;
3428 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
3429 PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
3430
3431 return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
3432 }
3433
3434 static int packet_show_line(char *buf, const struct filter *f, int fam)
3435 {
3436 unsigned long long sk;
3437 struct sockstat stat = {};
3438 int type, prot, iface, state, rq, uid, ino;
3439
3440 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
3441 &sk,
3442 &type, &prot, &iface, &state,
3443 &rq, &uid, &ino);
3444
3445 if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
3446 return 0;
3447 if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
3448 return 0;
3449
3450 stat.type = type;
3451 stat.prot = prot;
3452 stat.lport = stat.iface = iface;
3453 stat.state = state;
3454 stat.rq = rq;
3455 stat.uid = uid;
3456 stat.ino = ino;
3457 stat.state = SS_CLOSE;
3458
3459 if (packet_stats_print(&stat, f))
3460 return 0;
3461
3462 printf("\n");
3463 return 0;
3464 }
3465
3466 static int packet_show(struct filter *f)
3467 {
3468 FILE *fp;
3469 int rc = 0;
3470
3471 if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
3472 return 0;
3473
3474 if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
3475 packet_show_netlink(f) == 0)
3476 return 0;
3477
3478 if ((fp = net_packet_open()) == NULL)
3479 return -1;
3480 if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
3481 rc = -1;
3482
3483 fclose(fp);
3484 return rc;
3485 }
3486
3487 static int netlink_show_one(struct filter *f,
3488 int prot, int pid, unsigned int groups,
3489 int state, int dst_pid, unsigned int dst_group,
3490 int rq, int wq,
3491 unsigned long long sk, unsigned long long cb)
3492 {
3493 struct sockstat st = {
3494 .state = SS_CLOSE,
3495 .rq = rq,
3496 .wq = wq,
3497 .local.family = AF_NETLINK,
3498 .remote.family = AF_NETLINK,
3499 };
3500
3501 SPRINT_BUF(prot_buf) = {};
3502 const char *prot_name;
3503 char procname[64] = {};
3504
3505 if (f->f) {
3506 st.rport = -1;
3507 st.lport = pid;
3508 st.local.data[0] = prot;
3509 if (run_ssfilter(f->f, &st) == 0)
3510 return 1;
3511 }
3512
3513 sock_state_print(&st);
3514
3515 if (resolve_services)
3516 prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
3517 else
3518 prot_name = int_to_str(prot, prot_buf);
3519
3520 if (pid == -1) {
3521 procname[0] = '*';
3522 } else if (resolve_services) {
3523 int done = 0;
3524
3525 if (!pid) {
3526 done = 1;
3527 strncpy(procname, "kernel", 6);
3528 } else if (pid > 0) {
3529 FILE *fp;
3530
3531 snprintf(procname, sizeof(procname), "%s/%d/stat",
3532 getenv("PROC_ROOT") ? : "/proc", pid);
3533 if ((fp = fopen(procname, "r")) != NULL) {
3534 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
3535 snprintf(procname+strlen(procname),
3536 sizeof(procname)-strlen(procname),
3537 "/%d", pid);
3538 done = 1;
3539 }
3540 fclose(fp);
3541 }
3542 }
3543 if (!done)
3544 int_to_str(pid, procname);
3545 } else {
3546 int_to_str(pid, procname);
3547 }
3548
3549 sock_addr_print(prot_name, ":", procname, NULL);
3550
3551 if (state == NETLINK_CONNECTED) {
3552 char dst_group_buf[30];
3553 char dst_pid_buf[30];
3554
3555 sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
3556 int_to_str(dst_pid, dst_pid_buf), NULL);
3557 } else {
3558 sock_addr_print("", "*", "", NULL);
3559 }
3560
3561 char *pid_context = NULL;
3562
3563 if (show_proc_ctx) {
3564 /* The pid value will either be:
3565 * 0 if destination kernel - show kernel initial context.
3566 * A valid process pid - use getpidcon.
3567 * A unique value allocated by the kernel or netlink user
3568 * to the process - show context as "not available".
3569 */
3570 if (!pid)
3571 security_get_initial_context("kernel", &pid_context);
3572 else if (pid > 0)
3573 getpidcon(pid, &pid_context);
3574
3575 if (pid_context != NULL) {
3576 printf("proc_ctx=%-*s ", serv_width, pid_context);
3577 free(pid_context);
3578 } else {
3579 printf("proc_ctx=%-*s ", serv_width, "unavailable");
3580 }
3581 }
3582
3583 if (show_details) {
3584 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
3585 }
3586 printf("\n");
3587
3588 return 0;
3589 }
3590
3591 static int netlink_show_sock(const struct sockaddr_nl *addr,
3592 struct nlmsghdr *nlh, void *arg)
3593 {
3594 struct filter *f = (struct filter *)arg;
3595 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
3596 struct rtattr *tb[NETLINK_DIAG_MAX+1];
3597 int rq = 0, wq = 0;
3598 unsigned long groups = 0;
3599
3600 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
3601 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3602
3603 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
3604 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
3605
3606 if (tb[NETLINK_DIAG_MEMINFO]) {
3607 const __u32 *skmeminfo;
3608
3609 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
3610
3611 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3612 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
3613 }
3614
3615 if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
3616 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
3617 rq, wq, 0, 0)) {
3618 return 0;
3619 }
3620
3621 if (show_mem) {
3622 printf("\t");
3623 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
3624 printf("\n");
3625 }
3626
3627 return 0;
3628 }
3629
3630 static int netlink_show_netlink(struct filter *f)
3631 {
3632 DIAG_REQUEST(req, struct netlink_diag_req r);
3633
3634 req.r.sdiag_family = AF_NETLINK;
3635 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
3636 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
3637
3638 return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
3639 }
3640
3641 static int netlink_show(struct filter *f)
3642 {
3643 FILE *fp;
3644 char buf[256];
3645 int prot, pid;
3646 unsigned int groups;
3647 int rq, wq, rc;
3648 unsigned long long sk, cb;
3649
3650 if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
3651 return 0;
3652
3653 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
3654 netlink_show_netlink(f) == 0)
3655 return 0;
3656
3657 if ((fp = net_netlink_open()) == NULL)
3658 return -1;
3659 if (!fgets(buf, sizeof(buf), fp)) {
3660 fclose(fp);
3661 return -1;
3662 }
3663
3664 while (fgets(buf, sizeof(buf), fp)) {
3665 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
3666 &sk,
3667 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
3668
3669 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
3670 }
3671
3672 fclose(fp);
3673 return 0;
3674 }
3675
3676 struct sock_diag_msg {
3677 __u8 sdiag_family;
3678 };
3679
3680 static int generic_show_sock(const struct sockaddr_nl *addr,
3681 struct nlmsghdr *nlh, void *arg)
3682 {
3683 struct sock_diag_msg *r = NLMSG_DATA(nlh);
3684 struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
3685
3686 switch (r->sdiag_family) {
3687 case AF_INET:
3688 case AF_INET6:
3689 return show_one_inet_sock(addr, nlh, &inet_arg);
3690 case AF_UNIX:
3691 return unix_show_sock(addr, nlh, arg);
3692 case AF_PACKET:
3693 return packet_show_sock(addr, nlh, arg);
3694 case AF_NETLINK:
3695 return netlink_show_sock(addr, nlh, arg);
3696 default:
3697 return -1;
3698 }
3699 }
3700
3701 static int handle_follow_request(struct filter *f)
3702 {
3703 int ret = 0;
3704 int groups = 0;
3705 struct rtnl_handle rth;
3706
3707 if (f->families & (1 << AF_INET) && f->dbs & (1 << TCP_DB))
3708 groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
3709 if (f->families & (1 << AF_INET) && f->dbs & (1 << UDP_DB))
3710 groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
3711 if (f->families & (1 << AF_INET6) && f->dbs & (1 << TCP_DB))
3712 groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
3713 if (f->families & (1 << AF_INET6) && f->dbs & (1 << UDP_DB))
3714 groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
3715
3716 if (groups == 0)
3717 return -1;
3718
3719 if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
3720 return -1;
3721
3722 rth.dump = 0;
3723 rth.local.nl_pid = 0;
3724
3725 if (rtnl_dump_filter(&rth, generic_show_sock, f))
3726 ret = -1;
3727
3728 rtnl_close(&rth);
3729 return ret;
3730 }
3731
3732 static int get_snmp_int(char *proto, char *key, int *result)
3733 {
3734 char buf[1024];
3735 FILE *fp;
3736 int protolen = strlen(proto);
3737 int keylen = strlen(key);
3738
3739 *result = 0;
3740
3741 if ((fp = net_snmp_open()) == NULL)
3742 return -1;
3743
3744 while (fgets(buf, sizeof(buf), fp) != NULL) {
3745 char *p = buf;
3746 int pos = 0;
3747
3748 if (memcmp(buf, proto, protolen))
3749 continue;
3750 while ((p = strchr(p, ' ')) != NULL) {
3751 pos++;
3752 p++;
3753 if (memcmp(p, key, keylen) == 0 &&
3754 (p[keylen] == ' ' || p[keylen] == '\n'))
3755 break;
3756 }
3757 if (fgets(buf, sizeof(buf), fp) == NULL)
3758 break;
3759 if (memcmp(buf, proto, protolen))
3760 break;
3761 p = buf;
3762 while ((p = strchr(p, ' ')) != NULL) {
3763 p++;
3764 if (--pos == 0) {
3765 sscanf(p, "%d", result);
3766 fclose(fp);
3767 return 0;
3768 }
3769 }
3770 }
3771
3772 fclose(fp);
3773 errno = ESRCH;
3774 return -1;
3775 }
3776
3777
3778 /* Get stats from sockstat */
3779
3780 struct ssummary {
3781 int socks;
3782 int tcp_mem;
3783 int tcp_total;
3784 int tcp_orphans;
3785 int tcp_tws;
3786 int tcp4_hashed;
3787 int udp4;
3788 int raw4;
3789 int frag4;
3790 int frag4_mem;
3791 int tcp6_hashed;
3792 int udp6;
3793 int raw6;
3794 int frag6;
3795 int frag6_mem;
3796 };
3797
3798 static void get_sockstat_line(char *line, struct ssummary *s)
3799 {
3800 char id[256], rem[256];
3801
3802 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
3803 return;
3804
3805 if (strcmp(id, "sockets:") == 0)
3806 sscanf(rem, "%*s%d", &s->socks);
3807 else if (strcmp(id, "UDP:") == 0)
3808 sscanf(rem, "%*s%d", &s->udp4);
3809 else if (strcmp(id, "UDP6:") == 0)
3810 sscanf(rem, "%*s%d", &s->udp6);
3811 else if (strcmp(id, "RAW:") == 0)
3812 sscanf(rem, "%*s%d", &s->raw4);
3813 else if (strcmp(id, "RAW6:") == 0)
3814 sscanf(rem, "%*s%d", &s->raw6);
3815 else if (strcmp(id, "TCP6:") == 0)
3816 sscanf(rem, "%*s%d", &s->tcp6_hashed);
3817 else if (strcmp(id, "FRAG:") == 0)
3818 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
3819 else if (strcmp(id, "FRAG6:") == 0)
3820 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
3821 else if (strcmp(id, "TCP:") == 0)
3822 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
3823 &s->tcp4_hashed,
3824 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
3825 }
3826
3827 static int get_sockstat(struct ssummary *s)
3828 {
3829 char buf[256];
3830 FILE *fp;
3831
3832 memset(s, 0, sizeof(*s));
3833
3834 if ((fp = net_sockstat_open()) == NULL)
3835 return -1;
3836 while (fgets(buf, sizeof(buf), fp) != NULL)
3837 get_sockstat_line(buf, s);
3838 fclose(fp);
3839
3840 if ((fp = net_sockstat6_open()) == NULL)
3841 return 0;
3842 while (fgets(buf, sizeof(buf), fp) != NULL)
3843 get_sockstat_line(buf, s);
3844 fclose(fp);
3845
3846 return 0;
3847 }
3848
3849 static int print_summary(void)
3850 {
3851 struct ssummary s;
3852 int tcp_estab;
3853
3854 if (get_sockstat(&s) < 0)
3855 perror("ss: get_sockstat");
3856 if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0)
3857 perror("ss: get_snmpstat");
3858
3859 get_slabstat(&slabstat);
3860
3861 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
3862
3863 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
3864 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
3865 tcp_estab,
3866 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
3867 s.tcp_orphans,
3868 slabstat.tcp_syns,
3869 s.tcp_tws, slabstat.tcp_tws,
3870 slabstat.tcp_ports
3871 );
3872
3873 printf("\n");
3874 printf("Transport Total IP IPv6\n");
3875 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
3876 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
3877 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
3878 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
3879 printf("INET %-9d %-9d %-9d\n",
3880 s.raw4+s.udp4+s.tcp4_hashed+
3881 s.raw6+s.udp6+s.tcp6_hashed,
3882 s.raw4+s.udp4+s.tcp4_hashed,
3883 s.raw6+s.udp6+s.tcp6_hashed);
3884 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
3885
3886 printf("\n");
3887
3888 return 0;
3889 }
3890
3891 static void _usage(FILE *dest)
3892 {
3893 fprintf(dest,
3894 "Usage: ss [ OPTIONS ]\n"
3895 " ss [ OPTIONS ] [ FILTER ]\n"
3896 " -h, --help this message\n"
3897 " -V, --version output version information\n"
3898 " -n, --numeric don't resolve service names\n"
3899 " -r, --resolve resolve host names\n"
3900 " -a, --all display all sockets\n"
3901 " -l, --listening display listening sockets\n"
3902 " -o, --options show timer information\n"
3903 " -e, --extended show detailed socket information\n"
3904 " -m, --memory show socket memory usage\n"
3905 " -p, --processes show process using socket\n"
3906 " -i, --info show internal TCP information\n"
3907 " -s, --summary show socket usage summary\n"
3908 " -b, --bpf show bpf filter socket information\n"
3909 " -E, --events continually display sockets as they are destroyed\n"
3910 " -Z, --context display process SELinux security contexts\n"
3911 " -z, --contexts display process and socket SELinux security contexts\n"
3912 " -N, --net switch to the specified network namespace name\n"
3913 "\n"
3914 " -4, --ipv4 display only IP version 4 sockets\n"
3915 " -6, --ipv6 display only IP version 6 sockets\n"
3916 " -0, --packet display PACKET sockets\n"
3917 " -t, --tcp display only TCP sockets\n"
3918 " -S, --sctp display only SCTP sockets\n"
3919 " -u, --udp display only UDP sockets\n"
3920 " -d, --dccp display only DCCP sockets\n"
3921 " -w, --raw display only RAW sockets\n"
3922 " -x, --unix display only Unix domain sockets\n"
3923 " -f, --family=FAMILY display sockets of type FAMILY\n"
3924 " FAMILY := {inet|inet6|link|unix|netlink|help}\n"
3925 "\n"
3926 " -K, --kill forcibly close sockets, display what was closed\n"
3927 " -H, --no-header Suppress header line\n"
3928 "\n"
3929 " -A, --query=QUERY, --socket=QUERY\n"
3930 " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
3931 "\n"
3932 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
3933 " -F, --filter=FILE read filter information from FILE\n"
3934 " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
3935 " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
3936 " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n"
3937 " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3938 " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
3939 " bucket := {syn-recv|time-wait}\n"
3940 " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n"
3941 );
3942 }
3943
3944 static void help(void) __attribute__((noreturn));
3945 static void help(void)
3946 {
3947 _usage(stdout);
3948 exit(0);
3949 }
3950
3951 static void usage(void) __attribute__((noreturn));
3952 static void usage(void)
3953 {
3954 _usage(stderr);
3955 exit(-1);
3956 }
3957
3958
3959 static int scan_state(const char *state)
3960 {
3961 static const char * const sstate_namel[] = {
3962 "UNKNOWN",
3963 [SS_ESTABLISHED] = "established",
3964 [SS_SYN_SENT] = "syn-sent",
3965 [SS_SYN_RECV] = "syn-recv",
3966 [SS_FIN_WAIT1] = "fin-wait-1",
3967 [SS_FIN_WAIT2] = "fin-wait-2",
3968 [SS_TIME_WAIT] = "time-wait",
3969 [SS_CLOSE] = "unconnected",
3970 [SS_CLOSE_WAIT] = "close-wait",
3971 [SS_LAST_ACK] = "last-ack",
3972 [SS_LISTEN] = "listening",
3973 [SS_CLOSING] = "closing",
3974 };
3975 int i;
3976
3977 if (strcasecmp(state, "close") == 0 ||
3978 strcasecmp(state, "closed") == 0)
3979 return (1<<SS_CLOSE);
3980 if (strcasecmp(state, "syn-rcv") == 0)
3981 return (1<<SS_SYN_RECV);
3982 if (strcasecmp(state, "established") == 0)
3983 return (1<<SS_ESTABLISHED);
3984 if (strcasecmp(state, "all") == 0)
3985 return SS_ALL;
3986 if (strcasecmp(state, "connected") == 0)
3987 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
3988 if (strcasecmp(state, "synchronized") == 0)
3989 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
3990 if (strcasecmp(state, "bucket") == 0)
3991 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
3992 if (strcasecmp(state, "big") == 0)
3993 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
3994 for (i = 0; i < SS_MAX; i++) {
3995 if (strcasecmp(state, sstate_namel[i]) == 0)
3996 return (1<<i);
3997 }
3998
3999 fprintf(stderr, "ss: wrong state name: %s\n", state);
4000 exit(-1);
4001 }
4002
4003 static const struct option long_opts[] = {
4004 { "numeric", 0, 0, 'n' },
4005 { "resolve", 0, 0, 'r' },
4006 { "options", 0, 0, 'o' },
4007 { "extended", 0, 0, 'e' },
4008 { "memory", 0, 0, 'm' },
4009 { "info", 0, 0, 'i' },
4010 { "processes", 0, 0, 'p' },
4011 { "bpf", 0, 0, 'b' },
4012 { "events", 0, 0, 'E' },
4013 { "dccp", 0, 0, 'd' },
4014 { "tcp", 0, 0, 't' },
4015 { "sctp", 0, 0, 'S' },
4016 { "udp", 0, 0, 'u' },
4017 { "raw", 0, 0, 'w' },
4018 { "unix", 0, 0, 'x' },
4019 { "all", 0, 0, 'a' },
4020 { "listening", 0, 0, 'l' },
4021 { "ipv4", 0, 0, '4' },
4022 { "ipv6", 0, 0, '6' },
4023 { "packet", 0, 0, '0' },
4024 { "family", 1, 0, 'f' },
4025 { "socket", 1, 0, 'A' },
4026 { "query", 1, 0, 'A' },
4027 { "summary", 0, 0, 's' },
4028 { "diag", 1, 0, 'D' },
4029 { "filter", 1, 0, 'F' },
4030 { "version", 0, 0, 'V' },
4031 { "help", 0, 0, 'h' },
4032 { "context", 0, 0, 'Z' },
4033 { "contexts", 0, 0, 'z' },
4034 { "net", 1, 0, 'N' },
4035 { "kill", 0, 0, 'K' },
4036 { "no-header", 0, 0, 'H' },
4037 { 0 }
4038
4039 };
4040
4041 int main(int argc, char *argv[])
4042 {
4043 int saw_states = 0;
4044 int saw_query = 0;
4045 int do_summary = 0;
4046 const char *dump_tcpdiag = NULL;
4047 FILE *filter_fp = NULL;
4048 int ch;
4049 int state_filter = 0;
4050 int addrp_width, screen_width = 80;
4051
4052 while ((ch = getopt_long(argc, argv,
4053 "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
4054 long_opts, NULL)) != EOF) {
4055 switch (ch) {
4056 case 'n':
4057 resolve_services = 0;
4058 break;
4059 case 'r':
4060 resolve_hosts = 1;
4061 break;
4062 case 'o':
4063 show_options = 1;
4064 break;
4065 case 'e':
4066 show_options = 1;
4067 show_details++;
4068 break;
4069 case 'm':
4070 show_mem = 1;
4071 break;
4072 case 'i':
4073 show_tcpinfo = 1;
4074 break;
4075 case 'p':
4076 show_users++;
4077 user_ent_hash_build();
4078 break;
4079 case 'b':
4080 show_options = 1;
4081 show_bpf++;
4082 break;
4083 case 'E':
4084 follow_events = 1;
4085 break;
4086 case 'd':
4087 filter_db_set(&current_filter, DCCP_DB);
4088 break;
4089 case 't':
4090 filter_db_set(&current_filter, TCP_DB);
4091 break;
4092 case 'S':
4093 filter_db_set(&current_filter, SCTP_DB);
4094 break;
4095 case 'u':
4096 filter_db_set(&current_filter, UDP_DB);
4097 break;
4098 case 'w':
4099 filter_db_set(&current_filter, RAW_DB);
4100 break;
4101 case 'x':
4102 filter_af_set(&current_filter, AF_UNIX);
4103 break;
4104 case 'a':
4105 state_filter = SS_ALL;
4106 break;
4107 case 'l':
4108 state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
4109 break;
4110 case '4':
4111 filter_af_set(&current_filter, AF_INET);
4112 break;
4113 case '6':
4114 filter_af_set(&current_filter, AF_INET6);
4115 break;
4116 case '0':
4117 filter_af_set(&current_filter, AF_PACKET);
4118 break;
4119 case 'f':
4120 if (strcmp(optarg, "inet") == 0)
4121 filter_af_set(&current_filter, AF_INET);
4122 else if (strcmp(optarg, "inet6") == 0)
4123 filter_af_set(&current_filter, AF_INET6);
4124 else if (strcmp(optarg, "link") == 0)
4125 filter_af_set(&current_filter, AF_PACKET);
4126 else if (strcmp(optarg, "unix") == 0)
4127 filter_af_set(&current_filter, AF_UNIX);
4128 else if (strcmp(optarg, "netlink") == 0)
4129 filter_af_set(&current_filter, AF_NETLINK);
4130 else if (strcmp(optarg, "help") == 0)
4131 help();
4132 else {
4133 fprintf(stderr, "ss: \"%s\" is invalid family\n",
4134 optarg);
4135 usage();
4136 }
4137 break;
4138 case 'A':
4139 {
4140 char *p, *p1;
4141
4142 if (!saw_query) {
4143 current_filter.dbs = 0;
4144 state_filter = state_filter ?
4145 state_filter : SS_CONN;
4146 saw_query = 1;
4147 do_default = 0;
4148 }
4149 p = p1 = optarg;
4150 do {
4151 if ((p1 = strchr(p, ',')) != NULL)
4152 *p1 = 0;
4153 if (strcmp(p, "all") == 0) {
4154 filter_default_dbs(&current_filter);
4155 } else if (strcmp(p, "inet") == 0) {
4156 filter_db_set(&current_filter, UDP_DB);
4157 filter_db_set(&current_filter, DCCP_DB);
4158 filter_db_set(&current_filter, TCP_DB);
4159 filter_db_set(&current_filter, SCTP_DB);
4160 filter_db_set(&current_filter, RAW_DB);
4161 } else if (strcmp(p, "udp") == 0) {
4162 filter_db_set(&current_filter, UDP_DB);
4163 } else if (strcmp(p, "dccp") == 0) {
4164 filter_db_set(&current_filter, DCCP_DB);
4165 } else if (strcmp(p, "tcp") == 0) {
4166 filter_db_set(&current_filter, TCP_DB);
4167 } else if (strcmp(p, "sctp") == 0) {
4168 filter_db_set(&current_filter, SCTP_DB);
4169 } else if (strcmp(p, "raw") == 0) {
4170 filter_db_set(&current_filter, RAW_DB);
4171 } else if (strcmp(p, "unix") == 0) {
4172 filter_db_set(&current_filter, UNIX_ST_DB);
4173 filter_db_set(&current_filter, UNIX_DG_DB);
4174 filter_db_set(&current_filter, UNIX_SQ_DB);
4175 } else if (strcasecmp(p, "unix_stream") == 0 ||
4176 strcmp(p, "u_str") == 0) {
4177 filter_db_set(&current_filter, UNIX_ST_DB);
4178 } else if (strcasecmp(p, "unix_dgram") == 0 ||
4179 strcmp(p, "u_dgr") == 0) {
4180 filter_db_set(&current_filter, UNIX_DG_DB);
4181 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
4182 strcmp(p, "u_seq") == 0) {
4183 filter_db_set(&current_filter, UNIX_SQ_DB);
4184 } else if (strcmp(p, "packet") == 0) {
4185 filter_db_set(&current_filter, PACKET_R_DB);
4186 filter_db_set(&current_filter, PACKET_DG_DB);
4187 } else if (strcmp(p, "packet_raw") == 0 ||
4188 strcmp(p, "p_raw") == 0) {
4189 filter_db_set(&current_filter, PACKET_R_DB);
4190 } else if (strcmp(p, "packet_dgram") == 0 ||
4191 strcmp(p, "p_dgr") == 0) {
4192 filter_db_set(&current_filter, PACKET_DG_DB);
4193 } else if (strcmp(p, "netlink") == 0) {
4194 filter_db_set(&current_filter, NETLINK_DB);
4195 } else {
4196 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
4197 usage();
4198 }
4199 p = p1 + 1;
4200 } while (p1);
4201 break;
4202 }
4203 case 's':
4204 do_summary = 1;
4205 break;
4206 case 'D':
4207 dump_tcpdiag = optarg;
4208 break;
4209 case 'F':
4210 if (filter_fp) {
4211 fprintf(stderr, "More than one filter file\n");
4212 exit(-1);
4213 }
4214 if (optarg[0] == '-')
4215 filter_fp = stdin;
4216 else
4217 filter_fp = fopen(optarg, "r");
4218 if (!filter_fp) {
4219 perror("fopen filter file");
4220 exit(-1);
4221 }
4222 break;
4223 case 'v':
4224 case 'V':
4225 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
4226 exit(0);
4227 case 'z':
4228 show_sock_ctx++;
4229 /* fall through */
4230 case 'Z':
4231 if (is_selinux_enabled() <= 0) {
4232 fprintf(stderr, "ss: SELinux is not enabled.\n");
4233 exit(1);
4234 }
4235 show_proc_ctx++;
4236 user_ent_hash_build();
4237 break;
4238 case 'N':
4239 if (netns_switch(optarg))
4240 exit(1);
4241 break;
4242 case 'K':
4243 current_filter.kill = 1;
4244 break;
4245 case 'H':
4246 show_header = 0;
4247 break;
4248 case 'h':
4249 help();
4250 case '?':
4251 default:
4252 usage();
4253 }
4254 }
4255
4256 argc -= optind;
4257 argv += optind;
4258
4259 if (do_summary) {
4260 print_summary();
4261 if (do_default && argc == 0)
4262 exit(0);
4263 }
4264
4265 while (argc > 0) {
4266 if (strcmp(*argv, "state") == 0) {
4267 NEXT_ARG();
4268 if (!saw_states)
4269 state_filter = 0;
4270 state_filter |= scan_state(*argv);
4271 saw_states = 1;
4272 } else if (strcmp(*argv, "exclude") == 0 ||
4273 strcmp(*argv, "excl") == 0) {
4274 NEXT_ARG();
4275 if (!saw_states)
4276 state_filter = SS_ALL;
4277 state_filter &= ~scan_state(*argv);
4278 saw_states = 1;
4279 } else {
4280 break;
4281 }
4282 argc--; argv++;
4283 }
4284
4285 if (do_default) {
4286 state_filter = state_filter ? state_filter : SS_CONN;
4287 filter_default_dbs(&current_filter);
4288 }
4289
4290 filter_states_set(&current_filter, state_filter);
4291 filter_merge_defaults(&current_filter);
4292
4293 if (resolve_services && resolve_hosts &&
4294 (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
4295 init_service_resolver();
4296
4297 if (current_filter.dbs == 0) {
4298 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
4299 exit(0);
4300 }
4301 if (current_filter.families == 0) {
4302 fprintf(stderr, "ss: no families to show with such filter.\n");
4303 exit(0);
4304 }
4305 if (current_filter.states == 0) {
4306 fprintf(stderr, "ss: no socket states to show with such filter.\n");
4307 exit(0);
4308 }
4309
4310 if (dump_tcpdiag) {
4311 FILE *dump_fp = stdout;
4312
4313 if (!(current_filter.dbs & (1<<TCP_DB))) {
4314 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
4315 exit(0);
4316 }
4317 if (dump_tcpdiag[0] != '-') {
4318 dump_fp = fopen(dump_tcpdiag, "w");
4319 if (!dump_tcpdiag) {
4320 perror("fopen dump file");
4321 exit(-1);
4322 }
4323 }
4324 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
4325 fflush(dump_fp);
4326 exit(0);
4327 }
4328
4329 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
4330 usage();
4331
4332 netid_width = 0;
4333 if (current_filter.dbs&(current_filter.dbs-1))
4334 netid_width = 5;
4335
4336 state_width = 0;
4337 if (current_filter.states&(current_filter.states-1))
4338 state_width = 10;
4339
4340 if (isatty(STDOUT_FILENO)) {
4341 struct winsize w;
4342
4343 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
4344 if (w.ws_col > 0)
4345 screen_width = w.ws_col;
4346 }
4347 }
4348
4349 addrp_width = screen_width;
4350 addrp_width -= netid_width+1;
4351 addrp_width -= state_width+1;
4352 addrp_width -= 14;
4353
4354 if (addrp_width&1) {
4355 if (netid_width)
4356 netid_width++;
4357 else if (state_width)
4358 state_width++;
4359 }
4360
4361 addrp_width /= 2;
4362 addrp_width--;
4363
4364 serv_width = resolve_services ? 7 : 5;
4365
4366 if (addrp_width < 15+serv_width+1)
4367 addrp_width = 15+serv_width+1;
4368
4369 addr_width = addrp_width - serv_width - 1;
4370
4371 if (show_header) {
4372 if (netid_width)
4373 printf("%-*s ", netid_width, "Netid");
4374 if (state_width)
4375 printf("%-*s ", state_width, "State");
4376 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
4377 }
4378
4379 /* Make enough space for the local/remote port field */
4380 addr_width -= 13;
4381 serv_width += 13;
4382
4383 if (show_header) {
4384 printf("%*s:%-*s %*s:%-*s\n",
4385 addr_width, "Local Address", serv_width, "Port",
4386 addr_width, "Peer Address", serv_width, "Port");
4387 }
4388
4389 fflush(stdout);
4390
4391 if (follow_events)
4392 exit(handle_follow_request(&current_filter));
4393
4394 if (current_filter.dbs & (1<<NETLINK_DB))
4395 netlink_show(&current_filter);
4396 if (current_filter.dbs & PACKET_DBM)
4397 packet_show(&current_filter);
4398 if (current_filter.dbs & UNIX_DBM)
4399 unix_show(&current_filter);
4400 if (current_filter.dbs & (1<<RAW_DB))
4401 raw_show(&current_filter);
4402 if (current_filter.dbs & (1<<UDP_DB))
4403 udp_show(&current_filter);
4404 if (current_filter.dbs & (1<<TCP_DB))
4405 tcp_show(&current_filter);
4406 if (current_filter.dbs & (1<<DCCP_DB))
4407 dccp_show(&current_filter);
4408 if (current_filter.dbs & (1<<SCTP_DB))
4409 sctp_show(&current_filter);
4410
4411 if (show_users || show_proc_ctx || show_sock_ctx)
4412 user_ent_destroy();
4413
4414 return 0;
4415 }
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