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