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