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libnetlink: Add filter function to rtnl_neighdump_req
[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 <fcntl.h>
16 #include <sys/ioctl.h>
17 #include <sys/socket.h>
18 #include <sys/uio.h>
19 #include <sys/sysmacros.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 #include <stdarg.h>
31
32 #include "utils.h"
33 #include "rt_names.h"
34 #include "ll_map.h"
35 #include "libnetlink.h"
36 #include "namespace.h"
37 #include "SNAPSHOT.h"
38
39 #include <linux/tcp.h>
40 #include <linux/sock_diag.h>
41 #include <linux/inet_diag.h>
42 #include <linux/unix_diag.h>
43 #include <linux/netdevice.h> /* for MAX_ADDR_LEN */
44 #include <linux/filter.h>
45 #include <linux/packet_diag.h>
46 #include <linux/netlink_diag.h>
47 #include <linux/sctp.h>
48 #include <linux/vm_sockets_diag.h>
49 #include <linux/net.h>
50 #include <linux/tipc.h>
51 #include <linux/tipc_netlink.h>
52 #include <linux/tipc_sockets_diag.h>
53
54 #define MAGIC_SEQ 123456
55 #define BUF_CHUNK (1024 * 1024)
56 #define LEN_ALIGN(x) (((x) + 1) & ~1)
57
58 #define DIAG_REQUEST(_req, _r) \
59 struct { \
60 struct nlmsghdr nlh; \
61 _r; \
62 } _req = { \
63 .nlh = { \
64 .nlmsg_type = SOCK_DIAG_BY_FAMILY, \
65 .nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
66 .nlmsg_seq = MAGIC_SEQ, \
67 .nlmsg_len = sizeof(_req), \
68 }, \
69 }
70
71 #if HAVE_SELINUX
72 #include <selinux/selinux.h>
73 #else
74 /* Stubs for SELinux functions */
75 static int is_selinux_enabled(void)
76 {
77 return -1;
78 }
79
80 static int getpidcon(pid_t pid, char **context)
81 {
82 *context = NULL;
83 return -1;
84 }
85
86 static int getfilecon(char *path, char **context)
87 {
88 *context = NULL;
89 return -1;
90 }
91
92 static int security_get_initial_context(char *name, char **context)
93 {
94 *context = NULL;
95 return -1;
96 }
97 #endif
98
99 static int resolve_services = 1;
100 int preferred_family = AF_UNSPEC;
101 static int show_options;
102 int show_details;
103 static int show_users;
104 static int show_mem;
105 static int show_tcpinfo;
106 static int show_bpf;
107 static int show_proc_ctx;
108 static int show_sock_ctx;
109 static int show_header = 1;
110 static int follow_events;
111 static int sctp_ino;
112 static int show_tipcinfo;
113
114 enum col_id {
115 COL_NETID,
116 COL_STATE,
117 COL_RECVQ,
118 COL_SENDQ,
119 COL_ADDR,
120 COL_SERV,
121 COL_RADDR,
122 COL_RSERV,
123 COL_EXT,
124 COL_MAX
125 };
126
127 enum col_align {
128 ALIGN_LEFT,
129 ALIGN_CENTER,
130 ALIGN_RIGHT
131 };
132
133 struct column {
134 const enum col_align align;
135 const char *header;
136 const char *ldelim;
137 int disabled;
138 int width; /* Calculated, including additional layout spacing */
139 int max_len; /* Measured maximum field length in this column */
140 };
141
142 static struct column columns[] = {
143 { ALIGN_LEFT, "Netid", "", 0, 0, 0 },
144 { ALIGN_LEFT, "State", " ", 0, 0, 0 },
145 { ALIGN_LEFT, "Recv-Q", " ", 0, 0, 0 },
146 { ALIGN_LEFT, "Send-Q", " ", 0, 0, 0 },
147 { ALIGN_RIGHT, "Local Address:", " ", 0, 0, 0 },
148 { ALIGN_LEFT, "Port", "", 0, 0, 0 },
149 { ALIGN_RIGHT, "Peer Address:", " ", 0, 0, 0 },
150 { ALIGN_LEFT, "Port", "", 0, 0, 0 },
151 { ALIGN_LEFT, "", "", 0, 0, 0 },
152 };
153
154 static struct column *current_field = columns;
155
156 /* Output buffer: chained chunks of BUF_CHUNK bytes. Each field is written to
157 * the buffer as a variable size token. A token consists of a 16 bits length
158 * field, followed by a string which is not NULL-terminated.
159 *
160 * A new chunk is allocated and linked when the current chunk doesn't have
161 * enough room to store the current token as a whole.
162 */
163 struct buf_chunk {
164 struct buf_chunk *next; /* Next chained chunk */
165 char *end; /* Current end of content */
166 char data[0];
167 };
168
169 struct buf_token {
170 uint16_t len; /* Data length, excluding length descriptor */
171 char data[0];
172 };
173
174 static struct {
175 struct buf_token *cur; /* Position of current token in chunk */
176 struct buf_chunk *head; /* First chunk */
177 struct buf_chunk *tail; /* Current chunk */
178 } buffer;
179
180 static const char *TCP_PROTO = "tcp";
181 static const char *SCTP_PROTO = "sctp";
182 static const char *UDP_PROTO = "udp";
183 static const char *RAW_PROTO = "raw";
184 static const char *dg_proto;
185
186 enum {
187 TCP_DB,
188 DCCP_DB,
189 UDP_DB,
190 RAW_DB,
191 UNIX_DG_DB,
192 UNIX_ST_DB,
193 UNIX_SQ_DB,
194 PACKET_DG_DB,
195 PACKET_R_DB,
196 NETLINK_DB,
197 SCTP_DB,
198 VSOCK_ST_DB,
199 VSOCK_DG_DB,
200 TIPC_DB,
201 MAX_DB
202 };
203
204 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
205 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
206 #define ALL_DB ((1<<MAX_DB)-1)
207 #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
208 #define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
209 #define VSOCK_DBM ((1<<VSOCK_ST_DB)|(1<<VSOCK_DG_DB))
210
211 enum {
212 SS_UNKNOWN,
213 SS_ESTABLISHED,
214 SS_SYN_SENT,
215 SS_SYN_RECV,
216 SS_FIN_WAIT1,
217 SS_FIN_WAIT2,
218 SS_TIME_WAIT,
219 SS_CLOSE,
220 SS_CLOSE_WAIT,
221 SS_LAST_ACK,
222 SS_LISTEN,
223 SS_CLOSING,
224 SS_MAX
225 };
226
227 enum {
228 SCTP_STATE_CLOSED = 0,
229 SCTP_STATE_COOKIE_WAIT = 1,
230 SCTP_STATE_COOKIE_ECHOED = 2,
231 SCTP_STATE_ESTABLISHED = 3,
232 SCTP_STATE_SHUTDOWN_PENDING = 4,
233 SCTP_STATE_SHUTDOWN_SENT = 5,
234 SCTP_STATE_SHUTDOWN_RECEIVED = 6,
235 SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
236 };
237
238 #define SS_ALL ((1 << SS_MAX) - 1)
239 #define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
240 #define TIPC_SS_CONN ((1<<SS_ESTABLISHED)|(1<<SS_LISTEN)|(1<<SS_CLOSE))
241
242 #include "ssfilter.h"
243
244 struct filter {
245 int dbs;
246 int states;
247 uint64_t families;
248 struct ssfilter *f;
249 bool kill;
250 struct rtnl_handle *rth_for_killing;
251 };
252
253 #define FAMILY_MASK(family) ((uint64_t)1 << (family))
254
255 static const struct filter default_dbs[MAX_DB] = {
256 [TCP_DB] = {
257 .states = SS_CONN,
258 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
259 },
260 [DCCP_DB] = {
261 .states = SS_CONN,
262 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
263 },
264 [UDP_DB] = {
265 .states = (1 << SS_ESTABLISHED),
266 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
267 },
268 [RAW_DB] = {
269 .states = (1 << SS_ESTABLISHED),
270 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
271 },
272 [UNIX_DG_DB] = {
273 .states = (1 << SS_CLOSE),
274 .families = FAMILY_MASK(AF_UNIX),
275 },
276 [UNIX_ST_DB] = {
277 .states = SS_CONN,
278 .families = FAMILY_MASK(AF_UNIX),
279 },
280 [UNIX_SQ_DB] = {
281 .states = SS_CONN,
282 .families = FAMILY_MASK(AF_UNIX),
283 },
284 [PACKET_DG_DB] = {
285 .states = (1 << SS_CLOSE),
286 .families = FAMILY_MASK(AF_PACKET),
287 },
288 [PACKET_R_DB] = {
289 .states = (1 << SS_CLOSE),
290 .families = FAMILY_MASK(AF_PACKET),
291 },
292 [NETLINK_DB] = {
293 .states = (1 << SS_CLOSE),
294 .families = FAMILY_MASK(AF_NETLINK),
295 },
296 [SCTP_DB] = {
297 .states = SS_CONN,
298 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
299 },
300 [VSOCK_ST_DB] = {
301 .states = SS_CONN,
302 .families = FAMILY_MASK(AF_VSOCK),
303 },
304 [VSOCK_DG_DB] = {
305 .states = SS_CONN,
306 .families = FAMILY_MASK(AF_VSOCK),
307 },
308 [TIPC_DB] = {
309 .states = TIPC_SS_CONN,
310 .families = FAMILY_MASK(AF_TIPC),
311 },
312 };
313
314 static const struct filter default_afs[AF_MAX] = {
315 [AF_INET] = {
316 .dbs = INET_DBM,
317 .states = SS_CONN,
318 },
319 [AF_INET6] = {
320 .dbs = INET_DBM,
321 .states = SS_CONN,
322 },
323 [AF_UNIX] = {
324 .dbs = UNIX_DBM,
325 .states = SS_CONN,
326 },
327 [AF_PACKET] = {
328 .dbs = PACKET_DBM,
329 .states = (1 << SS_CLOSE),
330 },
331 [AF_NETLINK] = {
332 .dbs = (1 << NETLINK_DB),
333 .states = (1 << SS_CLOSE),
334 },
335 [AF_VSOCK] = {
336 .dbs = VSOCK_DBM,
337 .states = SS_CONN,
338 },
339 [AF_TIPC] = {
340 .dbs = (1 << TIPC_DB),
341 .states = TIPC_SS_CONN,
342 },
343 };
344
345 static int do_default = 1;
346 static struct filter current_filter;
347
348 static void filter_db_set(struct filter *f, int db, bool enable)
349 {
350 if (enable) {
351 f->states |= default_dbs[db].states;
352 f->dbs |= 1 << db;
353 } else {
354 f->dbs &= ~(1 << db);
355 }
356 do_default = 0;
357 }
358
359 static int filter_db_parse(struct filter *f, const char *s)
360 {
361 const struct {
362 const char *name;
363 int dbs[MAX_DB + 1];
364 } db_name_tbl[] = {
365 #define ENTRY(name, ...) { #name, { __VA_ARGS__, MAX_DB } }
366 ENTRY(all, UDP_DB, DCCP_DB, TCP_DB, RAW_DB,
367 UNIX_ST_DB, UNIX_DG_DB, UNIX_SQ_DB,
368 PACKET_R_DB, PACKET_DG_DB, NETLINK_DB,
369 SCTP_DB, VSOCK_ST_DB, VSOCK_DG_DB),
370 ENTRY(inet, UDP_DB, DCCP_DB, TCP_DB, SCTP_DB, RAW_DB),
371 ENTRY(udp, UDP_DB),
372 ENTRY(dccp, DCCP_DB),
373 ENTRY(tcp, TCP_DB),
374 ENTRY(sctp, SCTP_DB),
375 ENTRY(raw, RAW_DB),
376 ENTRY(unix, UNIX_ST_DB, UNIX_DG_DB, UNIX_SQ_DB),
377 ENTRY(unix_stream, UNIX_ST_DB),
378 ENTRY(u_str, UNIX_ST_DB), /* alias for unix_stream */
379 ENTRY(unix_dgram, UNIX_DG_DB),
380 ENTRY(u_dgr, UNIX_DG_DB), /* alias for unix_dgram */
381 ENTRY(unix_seqpacket, UNIX_SQ_DB),
382 ENTRY(u_seq, UNIX_SQ_DB), /* alias for unix_seqpacket */
383 ENTRY(packet, PACKET_R_DB, PACKET_DG_DB),
384 ENTRY(packet_raw, PACKET_R_DB),
385 ENTRY(p_raw, PACKET_R_DB), /* alias for packet_raw */
386 ENTRY(packet_dgram, PACKET_DG_DB),
387 ENTRY(p_dgr, PACKET_DG_DB), /* alias for packet_dgram */
388 ENTRY(netlink, NETLINK_DB),
389 ENTRY(vsock, VSOCK_ST_DB, VSOCK_DG_DB),
390 ENTRY(vsock_stream, VSOCK_ST_DB),
391 ENTRY(v_str, VSOCK_ST_DB), /* alias for vsock_stream */
392 ENTRY(vsock_dgram, VSOCK_DG_DB),
393 ENTRY(v_dgr, VSOCK_DG_DB), /* alias for vsock_dgram */
394 #undef ENTRY
395 };
396 bool enable = true;
397 unsigned int i;
398 const int *dbp;
399
400 if (s[0] == '!') {
401 enable = false;
402 s++;
403 }
404 for (i = 0; i < ARRAY_SIZE(db_name_tbl); i++) {
405 if (strcmp(s, db_name_tbl[i].name))
406 continue;
407 for (dbp = db_name_tbl[i].dbs; *dbp != MAX_DB; dbp++)
408 filter_db_set(f, *dbp, enable);
409 return 0;
410 }
411 return -1;
412 }
413
414 static void filter_af_set(struct filter *f, int af)
415 {
416 f->states |= default_afs[af].states;
417 f->families |= FAMILY_MASK(af);
418 do_default = 0;
419 preferred_family = af;
420 }
421
422 static int filter_af_get(struct filter *f, int af)
423 {
424 return !!(f->families & FAMILY_MASK(af));
425 }
426
427 static void filter_states_set(struct filter *f, int states)
428 {
429 if (states)
430 f->states = states;
431 }
432
433 static void filter_merge_defaults(struct filter *f)
434 {
435 int db;
436 int af;
437
438 for (db = 0; db < MAX_DB; db++) {
439 if (!(f->dbs & (1 << db)))
440 continue;
441
442 if (!(default_dbs[db].families & f->families))
443 f->families |= default_dbs[db].families;
444 }
445 for (af = 0; af < AF_MAX; af++) {
446 if (!(f->families & FAMILY_MASK(af)))
447 continue;
448
449 if (!(default_afs[af].dbs & f->dbs))
450 f->dbs |= default_afs[af].dbs;
451 }
452 }
453
454 static FILE *generic_proc_open(const char *env, const char *name)
455 {
456 const char *p = getenv(env);
457 char store[128];
458
459 if (!p) {
460 p = getenv("PROC_ROOT") ? : "/proc";
461 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
462 p = store;
463 }
464
465 return fopen(p, "r");
466 }
467 #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
468 #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
469 #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
470 #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
471 #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
472 #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
473 #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
474 #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
475 "net/packet")
476 #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
477 "net/netlink")
478 #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
479 "net/sockstat")
480 #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
481 "net/sockstat6")
482 #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
483 #define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
484 "sys/net/ipv4/ip_local_port_range")
485
486 struct user_ent {
487 struct user_ent *next;
488 unsigned int ino;
489 int pid;
490 int fd;
491 char *process;
492 char *process_ctx;
493 char *socket_ctx;
494 };
495
496 #define USER_ENT_HASH_SIZE 256
497 static struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
498
499 static int user_ent_hashfn(unsigned int ino)
500 {
501 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
502
503 return val & (USER_ENT_HASH_SIZE - 1);
504 }
505
506 static void user_ent_add(unsigned int ino, char *process,
507 int pid, int fd,
508 char *proc_ctx,
509 char *sock_ctx)
510 {
511 struct user_ent *p, **pp;
512
513 p = malloc(sizeof(struct user_ent));
514 if (!p) {
515 fprintf(stderr, "ss: failed to malloc buffer\n");
516 abort();
517 }
518 p->next = NULL;
519 p->ino = ino;
520 p->pid = pid;
521 p->fd = fd;
522 p->process = strdup(process);
523 p->process_ctx = strdup(proc_ctx);
524 p->socket_ctx = strdup(sock_ctx);
525
526 pp = &user_ent_hash[user_ent_hashfn(ino)];
527 p->next = *pp;
528 *pp = p;
529 }
530
531 static void user_ent_destroy(void)
532 {
533 struct user_ent *p, *p_next;
534 int cnt = 0;
535
536 while (cnt != USER_ENT_HASH_SIZE) {
537 p = user_ent_hash[cnt];
538 while (p) {
539 free(p->process);
540 free(p->process_ctx);
541 free(p->socket_ctx);
542 p_next = p->next;
543 free(p);
544 p = p_next;
545 }
546 cnt++;
547 }
548 }
549
550 static void user_ent_hash_build(void)
551 {
552 const char *root = getenv("PROC_ROOT") ? : "/proc/";
553 struct dirent *d;
554 char name[1024];
555 int nameoff;
556 DIR *dir;
557 char *pid_context;
558 char *sock_context;
559 const char *no_ctx = "unavailable";
560 static int user_ent_hash_build_init;
561
562 /* If show_users & show_proc_ctx set only do this once */
563 if (user_ent_hash_build_init != 0)
564 return;
565
566 user_ent_hash_build_init = 1;
567
568 strlcpy(name, root, sizeof(name));
569
570 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
571 strcat(name, "/");
572
573 nameoff = strlen(name);
574
575 dir = opendir(name);
576 if (!dir)
577 return;
578
579 while ((d = readdir(dir)) != NULL) {
580 struct dirent *d1;
581 char process[16];
582 char *p;
583 int pid, pos;
584 DIR *dir1;
585 char crap;
586
587 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
588 continue;
589
590 if (getpidcon(pid, &pid_context) != 0)
591 pid_context = strdup(no_ctx);
592
593 snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
594 pos = strlen(name);
595 if ((dir1 = opendir(name)) == NULL) {
596 free(pid_context);
597 continue;
598 }
599
600 process[0] = '\0';
601 p = process;
602
603 while ((d1 = readdir(dir1)) != NULL) {
604 const char *pattern = "socket:[";
605 unsigned int ino;
606 char lnk[64];
607 int fd;
608 ssize_t link_len;
609 char tmp[1024];
610
611 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
612 continue;
613
614 snprintf(name+pos, sizeof(name) - pos, "%d", fd);
615
616 link_len = readlink(name, lnk, sizeof(lnk)-1);
617 if (link_len == -1)
618 continue;
619 lnk[link_len] = '\0';
620
621 if (strncmp(lnk, pattern, strlen(pattern)))
622 continue;
623
624 sscanf(lnk, "socket:[%u]", &ino);
625
626 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
627 root, pid, d1->d_name);
628
629 if (getfilecon(tmp, &sock_context) <= 0)
630 sock_context = strdup(no_ctx);
631
632 if (*p == '\0') {
633 FILE *fp;
634
635 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
636 root, pid);
637 if ((fp = fopen(tmp, "r")) != NULL) {
638 if (fscanf(fp, "%*d (%[^)])", p) < 1)
639 ; /* ignore */
640 fclose(fp);
641 }
642 }
643 user_ent_add(ino, p, pid, fd,
644 pid_context, sock_context);
645 free(sock_context);
646 }
647 free(pid_context);
648 closedir(dir1);
649 }
650 closedir(dir);
651 }
652
653 enum entry_types {
654 USERS,
655 PROC_CTX,
656 PROC_SOCK_CTX
657 };
658
659 #define ENTRY_BUF_SIZE 512
660 static int find_entry(unsigned int ino, char **buf, int type)
661 {
662 struct user_ent *p;
663 int cnt = 0;
664 char *ptr;
665 char *new_buf;
666 int len, new_buf_len;
667 int buf_used = 0;
668 int buf_len = 0;
669
670 if (!ino)
671 return 0;
672
673 p = user_ent_hash[user_ent_hashfn(ino)];
674 ptr = *buf = NULL;
675 while (p) {
676 if (p->ino != ino)
677 goto next;
678
679 while (1) {
680 ptr = *buf + buf_used;
681 switch (type) {
682 case USERS:
683 len = snprintf(ptr, buf_len - buf_used,
684 "(\"%s\",pid=%d,fd=%d),",
685 p->process, p->pid, p->fd);
686 break;
687 case PROC_CTX:
688 len = snprintf(ptr, buf_len - buf_used,
689 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
690 p->process, p->pid,
691 p->process_ctx, p->fd);
692 break;
693 case PROC_SOCK_CTX:
694 len = snprintf(ptr, buf_len - buf_used,
695 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
696 p->process, p->pid,
697 p->process_ctx, p->fd,
698 p->socket_ctx);
699 break;
700 default:
701 fprintf(stderr, "ss: invalid type: %d\n", type);
702 abort();
703 }
704
705 if (len < 0 || len >= buf_len - buf_used) {
706 new_buf_len = buf_len + ENTRY_BUF_SIZE;
707 new_buf = realloc(*buf, new_buf_len);
708 if (!new_buf) {
709 fprintf(stderr, "ss: failed to malloc buffer\n");
710 abort();
711 }
712 *buf = new_buf;
713 buf_len = new_buf_len;
714 continue;
715 } else {
716 buf_used += len;
717 break;
718 }
719 }
720 cnt++;
721 next:
722 p = p->next;
723 }
724 if (buf_used) {
725 ptr = *buf + buf_used;
726 ptr[-1] = '\0';
727 }
728 return cnt;
729 }
730
731 static unsigned long long cookie_sk_get(const uint32_t *cookie)
732 {
733 return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
734 }
735
736 static const char *sctp_sstate_name[] = {
737 [SCTP_STATE_CLOSED] = "CLOSED",
738 [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
739 [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
740 [SCTP_STATE_ESTABLISHED] = "ESTAB",
741 [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
742 [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
743 [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
744 [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
745 };
746
747 static const char * const stype_nameg[] = {
748 "UNKNOWN",
749 [SOCK_STREAM] = "STREAM",
750 [SOCK_DGRAM] = "DGRAM",
751 [SOCK_RDM] = "RDM",
752 [SOCK_SEQPACKET] = "SEQPACKET",
753 };
754
755 struct sockstat {
756 struct sockstat *next;
757 unsigned int type;
758 uint16_t prot;
759 uint16_t raw_prot;
760 inet_prefix local;
761 inet_prefix remote;
762 int lport;
763 int rport;
764 int state;
765 int rq, wq;
766 unsigned int ino;
767 unsigned int uid;
768 int refcnt;
769 unsigned int iface;
770 unsigned long long sk;
771 char *name;
772 char *peer_name;
773 __u32 mark;
774 };
775
776 struct dctcpstat {
777 unsigned int ce_state;
778 unsigned int alpha;
779 unsigned int ab_ecn;
780 unsigned int ab_tot;
781 bool enabled;
782 };
783
784 struct tcpstat {
785 struct sockstat ss;
786 unsigned int timer;
787 unsigned int timeout;
788 int probes;
789 char cong_alg[16];
790 double rto, ato, rtt, rttvar;
791 int qack, ssthresh, backoff;
792 double send_bps;
793 int snd_wscale;
794 int rcv_wscale;
795 int mss;
796 int rcv_mss;
797 int advmss;
798 unsigned int pmtu;
799 unsigned int cwnd;
800 unsigned int lastsnd;
801 unsigned int lastrcv;
802 unsigned int lastack;
803 double pacing_rate;
804 double pacing_rate_max;
805 double delivery_rate;
806 unsigned long long bytes_acked;
807 unsigned long long bytes_received;
808 unsigned int segs_out;
809 unsigned int segs_in;
810 unsigned int data_segs_out;
811 unsigned int data_segs_in;
812 unsigned int unacked;
813 unsigned int retrans;
814 unsigned int retrans_total;
815 unsigned int lost;
816 unsigned int sacked;
817 unsigned int fackets;
818 unsigned int reordering;
819 unsigned int not_sent;
820 unsigned int delivered;
821 unsigned int delivered_ce;
822 unsigned int dsack_dups;
823 unsigned int reord_seen;
824 double rcv_rtt;
825 double min_rtt;
826 int rcv_space;
827 unsigned int rcv_ssthresh;
828 unsigned long long busy_time;
829 unsigned long long rwnd_limited;
830 unsigned long long sndbuf_limited;
831 unsigned long long bytes_sent;
832 unsigned long long bytes_retrans;
833 bool has_ts_opt;
834 bool has_sack_opt;
835 bool has_ecn_opt;
836 bool has_ecnseen_opt;
837 bool has_fastopen_opt;
838 bool has_wscale_opt;
839 bool app_limited;
840 struct dctcpstat *dctcp;
841 struct tcp_bbr_info *bbr_info;
842 };
843
844 /* SCTP assocs share the same inode number with their parent endpoint. So if we
845 * have seen the inode number before, it must be an assoc instead of the next
846 * endpoint. */
847 static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
848 {
849 if (strcmp(sock_name, "sctp"))
850 return false;
851 if (!sctp_ino || sctp_ino != s->ino)
852 return false;
853 return true;
854 }
855
856 static const char *unix_netid_name(int type)
857 {
858 switch (type) {
859 case SOCK_STREAM:
860 return "u_str";
861 case SOCK_SEQPACKET:
862 return "u_seq";
863 case SOCK_DGRAM:
864 default:
865 return "u_dgr";
866 }
867 }
868
869 static const char *proto_name(int protocol)
870 {
871 switch (protocol) {
872 case 0:
873 return "raw";
874 case IPPROTO_UDP:
875 return "udp";
876 case IPPROTO_TCP:
877 return "tcp";
878 case IPPROTO_SCTP:
879 return "sctp";
880 case IPPROTO_DCCP:
881 return "dccp";
882 case IPPROTO_ICMPV6:
883 return "icmp6";
884 }
885
886 return "???";
887 }
888
889 static const char *vsock_netid_name(int type)
890 {
891 switch (type) {
892 case SOCK_STREAM:
893 return "v_str";
894 case SOCK_DGRAM:
895 return "v_dgr";
896 default:
897 return "???";
898 }
899 }
900
901 static const char *tipc_netid_name(int type)
902 {
903 switch (type) {
904 case SOCK_STREAM:
905 return "ti_st";
906 case SOCK_DGRAM:
907 return "ti_dg";
908 case SOCK_RDM:
909 return "ti_rd";
910 case SOCK_SEQPACKET:
911 return "ti_sq";
912 default:
913 return "???";
914 }
915 }
916
917 /* Allocate and initialize a new buffer chunk */
918 static struct buf_chunk *buf_chunk_new(void)
919 {
920 struct buf_chunk *new = malloc(BUF_CHUNK);
921
922 if (!new)
923 abort();
924
925 new->next = NULL;
926
927 /* This is also the last block */
928 buffer.tail = new;
929
930 /* Next token will be stored at the beginning of chunk data area, and
931 * its initial length is zero.
932 */
933 buffer.cur = (struct buf_token *)new->data;
934 buffer.cur->len = 0;
935
936 new->end = buffer.cur->data;
937
938 return new;
939 }
940
941 /* Return available tail room in given chunk */
942 static int buf_chunk_avail(struct buf_chunk *chunk)
943 {
944 return BUF_CHUNK - offsetof(struct buf_chunk, data) -
945 (chunk->end - chunk->data);
946 }
947
948 /* Update end pointer and token length, link new chunk if we hit the end of the
949 * current one. Return -EAGAIN if we got a new chunk, caller has to print again.
950 */
951 static int buf_update(int len)
952 {
953 struct buf_chunk *chunk = buffer.tail;
954 struct buf_token *t = buffer.cur;
955
956 /* Claim success if new content fits in the current chunk, and anyway
957 * if this is the first token in the chunk: in the latter case,
958 * allocating a new chunk won't help, so we'll just cut the output.
959 */
960 if ((len < buf_chunk_avail(chunk) && len != -1 /* glibc < 2.0.6 */) ||
961 t == (struct buf_token *)chunk->data) {
962 len = min(len, buf_chunk_avail(chunk));
963
964 /* Total field length can't exceed 2^16 bytes, cut as needed */
965 len = min(len, USHRT_MAX - t->len);
966
967 chunk->end += len;
968 t->len += len;
969 return 0;
970 }
971
972 /* Content truncated, time to allocate more */
973 chunk->next = buf_chunk_new();
974
975 /* Copy current token over to new chunk, including length descriptor */
976 memcpy(chunk->next->data, t, sizeof(t->len) + t->len);
977 chunk->next->end += t->len;
978
979 /* Discard partially written field in old chunk */
980 chunk->end -= t->len + sizeof(t->len);
981
982 return -EAGAIN;
983 }
984
985 /* Append content to buffer as part of the current field */
986 __attribute__((format(printf, 1, 2)))
987 static void out(const char *fmt, ...)
988 {
989 struct column *f = current_field;
990 va_list args;
991 char *pos;
992 int len;
993
994 if (f->disabled)
995 return;
996
997 if (!buffer.head)
998 buffer.head = buf_chunk_new();
999
1000 again: /* Append to buffer: if we have a new chunk, print again */
1001
1002 pos = buffer.cur->data + buffer.cur->len;
1003 va_start(args, fmt);
1004
1005 /* Limit to tail room. If we hit the limit, buf_update() will tell us */
1006 len = vsnprintf(pos, buf_chunk_avail(buffer.tail), fmt, args);
1007 va_end(args);
1008
1009 if (buf_update(len))
1010 goto again;
1011 }
1012
1013 static int print_left_spacing(struct column *f, int stored, int printed)
1014 {
1015 int s;
1016
1017 if (!f->width || f->align == ALIGN_LEFT)
1018 return 0;
1019
1020 s = f->width - stored - printed;
1021 if (f->align == ALIGN_CENTER)
1022 /* If count of total spacing is odd, shift right by one */
1023 s = (s + 1) / 2;
1024
1025 if (s > 0)
1026 return printf("%*c", s, ' ');
1027
1028 return 0;
1029 }
1030
1031 static void print_right_spacing(struct column *f, int printed)
1032 {
1033 int s;
1034
1035 if (!f->width || f->align == ALIGN_RIGHT)
1036 return;
1037
1038 s = f->width - printed;
1039 if (f->align == ALIGN_CENTER)
1040 s /= 2;
1041
1042 if (s > 0)
1043 printf("%*c", s, ' ');
1044 }
1045
1046 /* Done with field: update buffer pointer, start new token after current one */
1047 static void field_flush(struct column *f)
1048 {
1049 struct buf_chunk *chunk;
1050 unsigned int pad;
1051
1052 if (f->disabled)
1053 return;
1054
1055 chunk = buffer.tail;
1056 pad = buffer.cur->len % 2;
1057
1058 if (buffer.cur->len > f->max_len)
1059 f->max_len = buffer.cur->len;
1060
1061 /* We need a new chunk if we can't store the next length descriptor.
1062 * Mind the gap between end of previous token and next aligned position
1063 * for length descriptor.
1064 */
1065 if (buf_chunk_avail(chunk) - pad < sizeof(buffer.cur->len)) {
1066 chunk->end += pad;
1067 chunk->next = buf_chunk_new();
1068 return;
1069 }
1070
1071 buffer.cur = (struct buf_token *)(buffer.cur->data +
1072 LEN_ALIGN(buffer.cur->len));
1073 buffer.cur->len = 0;
1074 buffer.tail->end = buffer.cur->data;
1075 }
1076
1077 static int field_is_last(struct column *f)
1078 {
1079 return f - columns == COL_MAX - 1;
1080 }
1081
1082 static void field_next(void)
1083 {
1084 field_flush(current_field);
1085
1086 if (field_is_last(current_field))
1087 current_field = columns;
1088 else
1089 current_field++;
1090 }
1091
1092 /* Walk through fields and flush them until we reach the desired one */
1093 static void field_set(enum col_id id)
1094 {
1095 while (id != current_field - columns)
1096 field_next();
1097 }
1098
1099 /* Print header for all non-empty columns */
1100 static void print_header(void)
1101 {
1102 while (!field_is_last(current_field)) {
1103 if (!current_field->disabled)
1104 out("%s", current_field->header);
1105 field_next();
1106 }
1107 }
1108
1109 /* Get the next available token in the buffer starting from the current token */
1110 static struct buf_token *buf_token_next(struct buf_token *cur)
1111 {
1112 struct buf_chunk *chunk = buffer.tail;
1113
1114 /* If we reached the end of chunk contents, get token from next chunk */
1115 if (cur->data + LEN_ALIGN(cur->len) == chunk->end) {
1116 buffer.tail = chunk = chunk->next;
1117 return chunk ? (struct buf_token *)chunk->data : NULL;
1118 }
1119
1120 return (struct buf_token *)(cur->data + LEN_ALIGN(cur->len));
1121 }
1122
1123 /* Free up all allocated buffer chunks */
1124 static void buf_free_all(void)
1125 {
1126 struct buf_chunk *tmp;
1127
1128 for (buffer.tail = buffer.head; buffer.tail; ) {
1129 tmp = buffer.tail;
1130 buffer.tail = buffer.tail->next;
1131 free(tmp);
1132 }
1133 buffer.head = NULL;
1134 }
1135
1136 /* Get current screen width, default to 80 columns if TIOCGWINSZ fails */
1137 static int render_screen_width(void)
1138 {
1139 int width = 80;
1140
1141 if (isatty(STDOUT_FILENO)) {
1142 struct winsize w;
1143
1144 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
1145 if (w.ws_col > 0)
1146 width = w.ws_col;
1147 }
1148 }
1149
1150 return width;
1151 }
1152
1153 /* Calculate column width from contents length. If columns don't fit on one
1154 * line, break them into the least possible amount of lines and keep them
1155 * aligned across lines. Available screen space is equally spread between fields
1156 * as additional spacing.
1157 */
1158 static void render_calc_width(void)
1159 {
1160 int screen_width = render_screen_width();
1161 struct column *c, *eol = columns - 1;
1162 int first, len = 0, linecols = 0;
1163
1164 /* First pass: set width for each column to measured content length */
1165 for (first = 1, c = columns; c - columns < COL_MAX; c++) {
1166 if (c->disabled)
1167 continue;
1168
1169 if (!first && c->max_len)
1170 c->width = c->max_len + strlen(c->ldelim);
1171 else
1172 c->width = c->max_len;
1173
1174 /* But don't exceed screen size. If we exceed the screen size
1175 * for even a single field, it will just start on a line of its
1176 * own and then naturally wrap.
1177 */
1178 c->width = min(c->width, screen_width);
1179
1180 if (c->width)
1181 first = 0;
1182 }
1183
1184 /* Second pass: find out newlines and distribute available spacing */
1185 for (c = columns; c - columns < COL_MAX; c++) {
1186 int pad, spacing, rem, last;
1187 struct column *tmp;
1188
1189 if (!c->width)
1190 continue;
1191
1192 linecols++;
1193 len += c->width;
1194
1195 for (last = 1, tmp = c + 1; tmp - columns < COL_MAX; tmp++) {
1196 if (tmp->width) {
1197 last = 0;
1198 break;
1199 }
1200 }
1201
1202 if (!last && len < screen_width) {
1203 /* Columns fit on screen so far, nothing to do yet */
1204 continue;
1205 }
1206
1207 if (len == screen_width) {
1208 /* Exact fit, just start with new line */
1209 goto newline;
1210 }
1211
1212 if (len > screen_width) {
1213 /* Screen width exceeded: go back one column */
1214 len -= c->width;
1215 c--;
1216 linecols--;
1217 }
1218
1219 /* Distribute remaining space to columns on this line */
1220 pad = screen_width - len;
1221 spacing = pad / linecols;
1222 rem = pad % linecols;
1223 for (tmp = c; tmp > eol; tmp--) {
1224 if (!tmp->width)
1225 continue;
1226
1227 tmp->width += spacing;
1228 if (rem) {
1229 tmp->width++;
1230 rem--;
1231 }
1232 }
1233
1234 newline:
1235 /* Line break: reset line counters, mark end-of-line */
1236 eol = c;
1237 len = 0;
1238 linecols = 0;
1239 }
1240 }
1241
1242 /* Render buffered output with spacing and delimiters, then free up buffers */
1243 static void render(void)
1244 {
1245 struct buf_token *token;
1246 int printed, line_started = 0;
1247 struct column *f;
1248
1249 if (!buffer.head)
1250 return;
1251
1252 token = (struct buf_token *)buffer.head->data;
1253
1254 /* Ensure end alignment of last token, it wasn't necessarily flushed */
1255 buffer.tail->end += buffer.cur->len % 2;
1256
1257 render_calc_width();
1258
1259 /* Rewind and replay */
1260 buffer.tail = buffer.head;
1261
1262 f = columns;
1263 while (!f->width)
1264 f++;
1265
1266 while (token) {
1267 /* Print left delimiter only if we already started a line */
1268 if (line_started++)
1269 printed = printf("%s", f->ldelim);
1270 else
1271 printed = 0;
1272
1273 /* Print field content from token data with spacing */
1274 printed += print_left_spacing(f, token->len, printed);
1275 printed += fwrite(token->data, 1, token->len, stdout);
1276 print_right_spacing(f, printed);
1277
1278 /* Go to next non-empty field, deal with end-of-line */
1279 do {
1280 if (field_is_last(f)) {
1281 printf("\n");
1282 f = columns;
1283 line_started = 0;
1284 } else {
1285 f++;
1286 }
1287 } while (f->disabled);
1288
1289 token = buf_token_next(token);
1290 }
1291
1292 buf_free_all();
1293 current_field = columns;
1294 }
1295
1296 static void sock_state_print(struct sockstat *s)
1297 {
1298 const char *sock_name;
1299 static const char * const sstate_name[] = {
1300 "UNKNOWN",
1301 [SS_ESTABLISHED] = "ESTAB",
1302 [SS_SYN_SENT] = "SYN-SENT",
1303 [SS_SYN_RECV] = "SYN-RECV",
1304 [SS_FIN_WAIT1] = "FIN-WAIT-1",
1305 [SS_FIN_WAIT2] = "FIN-WAIT-2",
1306 [SS_TIME_WAIT] = "TIME-WAIT",
1307 [SS_CLOSE] = "UNCONN",
1308 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
1309 [SS_LAST_ACK] = "LAST-ACK",
1310 [SS_LISTEN] = "LISTEN",
1311 [SS_CLOSING] = "CLOSING",
1312 };
1313
1314 switch (s->local.family) {
1315 case AF_UNIX:
1316 sock_name = unix_netid_name(s->type);
1317 break;
1318 case AF_INET:
1319 case AF_INET6:
1320 sock_name = proto_name(s->type);
1321 break;
1322 case AF_PACKET:
1323 sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
1324 break;
1325 case AF_NETLINK:
1326 sock_name = "nl";
1327 break;
1328 case AF_TIPC:
1329 sock_name = tipc_netid_name(s->type);
1330 break;
1331 case AF_VSOCK:
1332 sock_name = vsock_netid_name(s->type);
1333 break;
1334 default:
1335 sock_name = "unknown";
1336 }
1337
1338 if (is_sctp_assoc(s, sock_name)) {
1339 field_set(COL_STATE); /* Empty Netid field */
1340 out("`- %s", sctp_sstate_name[s->state]);
1341 } else {
1342 field_set(COL_NETID);
1343 out("%s", sock_name);
1344 field_set(COL_STATE);
1345 out("%s", sstate_name[s->state]);
1346 }
1347
1348 field_set(COL_RECVQ);
1349 out("%-6d", s->rq);
1350 field_set(COL_SENDQ);
1351 out("%-6d", s->wq);
1352 field_set(COL_ADDR);
1353 }
1354
1355 static void sock_details_print(struct sockstat *s)
1356 {
1357 if (s->uid)
1358 out(" uid:%u", s->uid);
1359
1360 out(" ino:%u", s->ino);
1361 out(" sk:%llx", s->sk);
1362
1363 if (s->mark)
1364 out(" fwmark:0x%x", s->mark);
1365 }
1366
1367 static void sock_addr_print(const char *addr, char *delim, const char *port,
1368 const char *ifname)
1369 {
1370 if (ifname)
1371 out("%s" "%%" "%s%s", addr, ifname, delim);
1372 else
1373 out("%s%s", addr, delim);
1374
1375 field_next();
1376 out("%s", port);
1377 field_next();
1378 }
1379
1380 static const char *print_ms_timer(unsigned int timeout)
1381 {
1382 static char buf[64];
1383 int secs, msecs, minutes;
1384
1385 secs = timeout/1000;
1386 minutes = secs/60;
1387 secs = secs%60;
1388 msecs = timeout%1000;
1389 buf[0] = 0;
1390 if (minutes) {
1391 msecs = 0;
1392 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
1393 if (minutes > 9)
1394 secs = 0;
1395 }
1396 if (secs) {
1397 if (secs > 9)
1398 msecs = 0;
1399 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
1400 }
1401 if (msecs)
1402 sprintf(buf+strlen(buf), "%03dms", msecs);
1403 return buf;
1404 }
1405
1406 struct scache {
1407 struct scache *next;
1408 int port;
1409 char *name;
1410 const char *proto;
1411 };
1412
1413 static struct scache *rlist;
1414
1415 static void init_service_resolver(void)
1416 {
1417 char buf[128];
1418 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
1419
1420 if (!fp)
1421 return;
1422
1423 if (!fgets(buf, sizeof(buf), fp)) {
1424 pclose(fp);
1425 return;
1426 }
1427 while (fgets(buf, sizeof(buf), fp) != NULL) {
1428 unsigned int progn, port;
1429 char proto[128], prog[128] = "rpc.";
1430 struct scache *c;
1431
1432 if (sscanf(buf, "%u %*d %s %u %s",
1433 &progn, proto, &port, prog+4) != 4)
1434 continue;
1435
1436 if (!(c = malloc(sizeof(*c))))
1437 continue;
1438
1439 c->port = port;
1440 c->name = strdup(prog);
1441 if (strcmp(proto, TCP_PROTO) == 0)
1442 c->proto = TCP_PROTO;
1443 else if (strcmp(proto, UDP_PROTO) == 0)
1444 c->proto = UDP_PROTO;
1445 else if (strcmp(proto, SCTP_PROTO) == 0)
1446 c->proto = SCTP_PROTO;
1447 else
1448 c->proto = NULL;
1449 c->next = rlist;
1450 rlist = c;
1451 }
1452 pclose(fp);
1453 }
1454
1455 /* Even do not try default linux ephemeral port ranges:
1456 * default /etc/services contains so much of useless crap
1457 * wouldbe "allocated" to this area that resolution
1458 * is really harmful. I shrug each time when seeing
1459 * "socks" or "cfinger" in dumps.
1460 */
1461 static int is_ephemeral(int port)
1462 {
1463 static int min = 0, max;
1464
1465 if (!min) {
1466 FILE *f = ephemeral_ports_open();
1467
1468 if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
1469 min = 1024;
1470 max = 4999;
1471 }
1472 if (f)
1473 fclose(f);
1474 }
1475 return port >= min && port <= max;
1476 }
1477
1478
1479 static const char *__resolve_service(int port)
1480 {
1481 struct scache *c;
1482
1483 for (c = rlist; c; c = c->next) {
1484 if (c->port == port && c->proto == dg_proto)
1485 return c->name;
1486 }
1487
1488 if (!is_ephemeral(port)) {
1489 static int notfirst;
1490 struct servent *se;
1491
1492 if (!notfirst) {
1493 setservent(1);
1494 notfirst = 1;
1495 }
1496 se = getservbyport(htons(port), dg_proto);
1497 if (se)
1498 return se->s_name;
1499 }
1500
1501 return NULL;
1502 }
1503
1504 #define SCACHE_BUCKETS 1024
1505 static struct scache *cache_htab[SCACHE_BUCKETS];
1506
1507 static const char *resolve_service(int port)
1508 {
1509 static char buf[128];
1510 struct scache *c;
1511 const char *res;
1512 int hash;
1513
1514 if (port == 0) {
1515 buf[0] = '*';
1516 buf[1] = 0;
1517 return buf;
1518 }
1519
1520 if (!resolve_services)
1521 goto do_numeric;
1522
1523 if (dg_proto == RAW_PROTO)
1524 return inet_proto_n2a(port, buf, sizeof(buf));
1525
1526
1527 hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
1528
1529 for (c = cache_htab[hash]; c; c = c->next) {
1530 if (c->port == port && c->proto == dg_proto)
1531 goto do_cache;
1532 }
1533
1534 c = malloc(sizeof(*c));
1535 if (!c)
1536 goto do_numeric;
1537 res = __resolve_service(port);
1538 c->port = port;
1539 c->name = res ? strdup(res) : NULL;
1540 c->proto = dg_proto;
1541 c->next = cache_htab[hash];
1542 cache_htab[hash] = c;
1543
1544 do_cache:
1545 if (c->name)
1546 return c->name;
1547
1548 do_numeric:
1549 sprintf(buf, "%u", port);
1550 return buf;
1551 }
1552
1553 static void inet_addr_print(const inet_prefix *a, int port,
1554 unsigned int ifindex, bool v6only)
1555 {
1556 char buf[1024];
1557 const char *ap = buf;
1558 const char *ifname = NULL;
1559
1560 if (a->family == AF_INET) {
1561 ap = format_host(AF_INET, 4, a->data);
1562 } else {
1563 if (!v6only &&
1564 !memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) {
1565 buf[0] = '*';
1566 buf[1] = 0;
1567 } else {
1568 ap = format_host(a->family, 16, a->data);
1569
1570 /* Numeric IPv6 addresses should be bracketed */
1571 if (strchr(ap, ':')) {
1572 snprintf(buf, sizeof(buf),
1573 "[%s]", ap);
1574 ap = buf;
1575 }
1576 }
1577 }
1578
1579 if (ifindex)
1580 ifname = ll_index_to_name(ifindex);
1581
1582 sock_addr_print(ap, ":", resolve_service(port), ifname);
1583 }
1584
1585 struct aafilter {
1586 inet_prefix addr;
1587 int port;
1588 unsigned int iface;
1589 __u32 mark;
1590 __u32 mask;
1591 struct aafilter *next;
1592 };
1593
1594 static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
1595 int plen)
1596 {
1597 if (!inet_addr_match(a, p, plen))
1598 return 0;
1599
1600 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
1601 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
1602 * sockets. Fair? */
1603 if (p->family == AF_INET && a->family == AF_INET6) {
1604 if (a->data[0] == 0 && a->data[1] == 0 &&
1605 a->data[2] == htonl(0xffff)) {
1606 inet_prefix tmp = *a;
1607
1608 tmp.data[0] = a->data[3];
1609 return inet_addr_match(&tmp, p, plen);
1610 }
1611 }
1612 return 1;
1613 }
1614
1615 static int unix_match(const inet_prefix *a, const inet_prefix *p)
1616 {
1617 char *addr, *pattern;
1618
1619 memcpy(&addr, a->data, sizeof(addr));
1620 memcpy(&pattern, p->data, sizeof(pattern));
1621 if (pattern == NULL)
1622 return 1;
1623 if (addr == NULL)
1624 addr = "";
1625 return !fnmatch(pattern, addr, 0);
1626 }
1627
1628 static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
1629 {
1630 switch (f->type) {
1631 case SSF_S_AUTO:
1632 {
1633 if (s->local.family == AF_UNIX) {
1634 char *p;
1635
1636 memcpy(&p, s->local.data, sizeof(p));
1637 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
1638 strspn(p+1, "0123456789abcdef") == 5);
1639 }
1640 if (s->local.family == AF_PACKET)
1641 return s->lport == 0 && s->local.data[0] == 0;
1642 if (s->local.family == AF_NETLINK)
1643 return s->lport < 0;
1644 if (s->local.family == AF_VSOCK)
1645 return s->lport > 1023;
1646
1647 return is_ephemeral(s->lport);
1648 }
1649 case SSF_DCOND:
1650 {
1651 struct aafilter *a = (void *)f->pred;
1652
1653 if (a->addr.family == AF_UNIX)
1654 return unix_match(&s->remote, &a->addr);
1655 if (a->port != -1 && a->port != s->rport)
1656 return 0;
1657 if (a->addr.bitlen) {
1658 do {
1659 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
1660 return 1;
1661 } while ((a = a->next) != NULL);
1662 return 0;
1663 }
1664 return 1;
1665 }
1666 case SSF_SCOND:
1667 {
1668 struct aafilter *a = (void *)f->pred;
1669
1670 if (a->addr.family == AF_UNIX)
1671 return unix_match(&s->local, &a->addr);
1672 if (a->port != -1 && a->port != s->lport)
1673 return 0;
1674 if (a->addr.bitlen) {
1675 do {
1676 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
1677 return 1;
1678 } while ((a = a->next) != NULL);
1679 return 0;
1680 }
1681 return 1;
1682 }
1683 case SSF_D_GE:
1684 {
1685 struct aafilter *a = (void *)f->pred;
1686
1687 return s->rport >= a->port;
1688 }
1689 case SSF_D_LE:
1690 {
1691 struct aafilter *a = (void *)f->pred;
1692
1693 return s->rport <= a->port;
1694 }
1695 case SSF_S_GE:
1696 {
1697 struct aafilter *a = (void *)f->pred;
1698
1699 return s->lport >= a->port;
1700 }
1701 case SSF_S_LE:
1702 {
1703 struct aafilter *a = (void *)f->pred;
1704
1705 return s->lport <= a->port;
1706 }
1707 case SSF_DEVCOND:
1708 {
1709 struct aafilter *a = (void *)f->pred;
1710
1711 return s->iface == a->iface;
1712 }
1713 case SSF_MARKMASK:
1714 {
1715 struct aafilter *a = (void *)f->pred;
1716
1717 return (s->mark & a->mask) == a->mark;
1718 }
1719 /* Yup. It is recursion. Sorry. */
1720 case SSF_AND:
1721 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
1722 case SSF_OR:
1723 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
1724 case SSF_NOT:
1725 return !run_ssfilter(f->pred, s);
1726 default:
1727 abort();
1728 }
1729 }
1730
1731 /* Relocate external jumps by reloc. */
1732 static void ssfilter_patch(char *a, int len, int reloc)
1733 {
1734 while (len > 0) {
1735 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
1736
1737 if (op->no == len+4)
1738 op->no += reloc;
1739 len -= op->yes;
1740 a += op->yes;
1741 }
1742 if (len < 0)
1743 abort();
1744 }
1745
1746 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
1747 {
1748 switch (f->type) {
1749 case SSF_S_AUTO:
1750 {
1751 if (!(*bytecode = malloc(4))) abort();
1752 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
1753 return 4;
1754 }
1755 case SSF_DCOND:
1756 case SSF_SCOND:
1757 {
1758 struct aafilter *a = (void *)f->pred;
1759 struct aafilter *b;
1760 char *ptr;
1761 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
1762 int len = 0;
1763
1764 for (b = a; b; b = b->next) {
1765 len += 4 + sizeof(struct inet_diag_hostcond);
1766 if (a->addr.family == AF_INET6)
1767 len += 16;
1768 else
1769 len += 4;
1770 if (b->next)
1771 len += 4;
1772 }
1773 if (!(ptr = malloc(len))) abort();
1774 *bytecode = ptr;
1775 for (b = a; b; b = b->next) {
1776 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
1777 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
1778 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
1779 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
1780
1781 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
1782 cond->family = a->addr.family;
1783 cond->port = a->port;
1784 cond->prefix_len = a->addr.bitlen;
1785 memcpy(cond->addr, a->addr.data, alen);
1786 ptr += oplen;
1787 if (b->next) {
1788 op = (struct inet_diag_bc_op *)ptr;
1789 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
1790 ptr += 4;
1791 }
1792 }
1793 return ptr - *bytecode;
1794 }
1795 case SSF_D_GE:
1796 {
1797 struct aafilter *x = (void *)f->pred;
1798
1799 if (!(*bytecode = malloc(8))) abort();
1800 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1801 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1802 return 8;
1803 }
1804 case SSF_D_LE:
1805 {
1806 struct aafilter *x = (void *)f->pred;
1807
1808 if (!(*bytecode = malloc(8))) abort();
1809 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1810 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1811 return 8;
1812 }
1813 case SSF_S_GE:
1814 {
1815 struct aafilter *x = (void *)f->pred;
1816
1817 if (!(*bytecode = malloc(8))) abort();
1818 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1819 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1820 return 8;
1821 }
1822 case SSF_S_LE:
1823 {
1824 struct aafilter *x = (void *)f->pred;
1825
1826 if (!(*bytecode = malloc(8))) abort();
1827 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1828 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1829 return 8;
1830 }
1831
1832 case SSF_AND:
1833 {
1834 char *a1 = NULL, *a2 = NULL, *a;
1835 int l1, l2;
1836
1837 l1 = ssfilter_bytecompile(f->pred, &a1);
1838 l2 = ssfilter_bytecompile(f->post, &a2);
1839 if (!l1 || !l2) {
1840 free(a1);
1841 free(a2);
1842 return 0;
1843 }
1844 if (!(a = malloc(l1+l2))) abort();
1845 memcpy(a, a1, l1);
1846 memcpy(a+l1, a2, l2);
1847 free(a1); free(a2);
1848 ssfilter_patch(a, l1, l2);
1849 *bytecode = a;
1850 return l1+l2;
1851 }
1852 case SSF_OR:
1853 {
1854 char *a1 = NULL, *a2 = NULL, *a;
1855 int l1, l2;
1856
1857 l1 = ssfilter_bytecompile(f->pred, &a1);
1858 l2 = ssfilter_bytecompile(f->post, &a2);
1859 if (!l1 || !l2) {
1860 free(a1);
1861 free(a2);
1862 return 0;
1863 }
1864 if (!(a = malloc(l1+l2+4))) abort();
1865 memcpy(a, a1, l1);
1866 memcpy(a+l1+4, a2, l2);
1867 free(a1); free(a2);
1868 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
1869 *bytecode = a;
1870 return l1+l2+4;
1871 }
1872 case SSF_NOT:
1873 {
1874 char *a1 = NULL, *a;
1875 int l1;
1876
1877 l1 = ssfilter_bytecompile(f->pred, &a1);
1878 if (!l1) {
1879 free(a1);
1880 return 0;
1881 }
1882 if (!(a = malloc(l1+4))) abort();
1883 memcpy(a, a1, l1);
1884 free(a1);
1885 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
1886 *bytecode = a;
1887 return l1+4;
1888 }
1889 case SSF_DEVCOND:
1890 {
1891 /* bytecompile for SSF_DEVCOND not supported yet */
1892 return 0;
1893 }
1894 case SSF_MARKMASK:
1895 {
1896 struct aafilter *a = (void *)f->pred;
1897 struct instr {
1898 struct inet_diag_bc_op op;
1899 struct inet_diag_markcond cond;
1900 };
1901 int inslen = sizeof(struct instr);
1902
1903 if (!(*bytecode = malloc(inslen))) abort();
1904 ((struct instr *)*bytecode)[0] = (struct instr) {
1905 { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
1906 { a->mark, a->mask},
1907 };
1908
1909 return inslen;
1910 }
1911 default:
1912 abort();
1913 }
1914 }
1915
1916 static int remember_he(struct aafilter *a, struct hostent *he)
1917 {
1918 char **ptr = he->h_addr_list;
1919 int cnt = 0;
1920 int len;
1921
1922 if (he->h_addrtype == AF_INET)
1923 len = 4;
1924 else if (he->h_addrtype == AF_INET6)
1925 len = 16;
1926 else
1927 return 0;
1928
1929 while (*ptr) {
1930 struct aafilter *b = a;
1931
1932 if (a->addr.bitlen) {
1933 if ((b = malloc(sizeof(*b))) == NULL)
1934 return cnt;
1935 *b = *a;
1936 a->next = b;
1937 }
1938 memcpy(b->addr.data, *ptr, len);
1939 b->addr.bytelen = len;
1940 b->addr.bitlen = len*8;
1941 b->addr.family = he->h_addrtype;
1942 ptr++;
1943 cnt++;
1944 }
1945 return cnt;
1946 }
1947
1948 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
1949 {
1950 static int notfirst;
1951 int cnt = 0;
1952 struct hostent *he;
1953
1954 a->addr.bitlen = 0;
1955 if (!notfirst) {
1956 sethostent(1);
1957 notfirst = 1;
1958 }
1959 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1960 if (he)
1961 cnt = remember_he(a, he);
1962 if (fam == AF_UNSPEC) {
1963 he = gethostbyname2(addr, AF_INET6);
1964 if (he)
1965 cnt += remember_he(a, he);
1966 }
1967 return !cnt;
1968 }
1969
1970 static int xll_initted;
1971
1972 static void xll_init(void)
1973 {
1974 struct rtnl_handle rth;
1975
1976 if (rtnl_open(&rth, 0) < 0)
1977 exit(1);
1978
1979 ll_init_map(&rth);
1980 rtnl_close(&rth);
1981 xll_initted = 1;
1982 }
1983
1984 static const char *xll_index_to_name(int index)
1985 {
1986 if (!xll_initted)
1987 xll_init();
1988 return ll_index_to_name(index);
1989 }
1990
1991 static int xll_name_to_index(const char *dev)
1992 {
1993 if (!xll_initted)
1994 xll_init();
1995 return ll_name_to_index(dev);
1996 }
1997
1998 void *parse_devcond(char *name)
1999 {
2000 struct aafilter a = { .iface = 0 };
2001 struct aafilter *res;
2002
2003 a.iface = xll_name_to_index(name);
2004 if (a.iface == 0) {
2005 char *end;
2006 unsigned long n;
2007
2008 n = strtoul(name, &end, 0);
2009 if (!end || end == name || *end || n > UINT_MAX)
2010 return NULL;
2011
2012 a.iface = n;
2013 }
2014
2015 res = malloc(sizeof(*res));
2016 *res = a;
2017
2018 return res;
2019 }
2020
2021 static void vsock_set_inet_prefix(inet_prefix *a, __u32 cid)
2022 {
2023 *a = (inet_prefix){
2024 .bytelen = sizeof(cid),
2025 .family = AF_VSOCK,
2026 };
2027 memcpy(a->data, &cid, sizeof(cid));
2028 }
2029
2030 void *parse_hostcond(char *addr, bool is_port)
2031 {
2032 char *port = NULL;
2033 struct aafilter a = { .port = -1 };
2034 struct aafilter *res;
2035 int fam = preferred_family;
2036 struct filter *f = &current_filter;
2037
2038 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
2039 char *p;
2040
2041 a.addr.family = AF_UNIX;
2042 if (strncmp(addr, "unix:", 5) == 0)
2043 addr += 5;
2044 p = strdup(addr);
2045 a.addr.bitlen = 8*strlen(p);
2046 memcpy(a.addr.data, &p, sizeof(p));
2047 fam = AF_UNIX;
2048 goto out;
2049 }
2050
2051 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
2052 a.addr.family = AF_PACKET;
2053 a.addr.bitlen = 0;
2054 if (strncmp(addr, "link:", 5) == 0)
2055 addr += 5;
2056 port = strchr(addr, ':');
2057 if (port) {
2058 *port = 0;
2059 if (port[1] && strcmp(port+1, "*")) {
2060 if (get_integer(&a.port, port+1, 0)) {
2061 if ((a.port = xll_name_to_index(port+1)) <= 0)
2062 return NULL;
2063 }
2064 }
2065 }
2066 if (addr[0] && strcmp(addr, "*")) {
2067 unsigned short tmp;
2068
2069 a.addr.bitlen = 32;
2070 if (ll_proto_a2n(&tmp, addr))
2071 return NULL;
2072 a.addr.data[0] = ntohs(tmp);
2073 }
2074 fam = AF_PACKET;
2075 goto out;
2076 }
2077
2078 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
2079 a.addr.family = AF_NETLINK;
2080 a.addr.bitlen = 0;
2081 if (strncmp(addr, "netlink:", 8) == 0)
2082 addr += 8;
2083 port = strchr(addr, ':');
2084 if (port) {
2085 *port = 0;
2086 if (port[1] && strcmp(port+1, "*")) {
2087 if (get_integer(&a.port, port+1, 0)) {
2088 if (strcmp(port+1, "kernel") == 0)
2089 a.port = 0;
2090 else
2091 return NULL;
2092 }
2093 }
2094 }
2095 if (addr[0] && strcmp(addr, "*")) {
2096 a.addr.bitlen = 32;
2097 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
2098 return NULL;
2099 }
2100 fam = AF_NETLINK;
2101 goto out;
2102 }
2103
2104 if (fam == AF_VSOCK || strncmp(addr, "vsock:", 6) == 0) {
2105 __u32 cid = ~(__u32)0;
2106
2107 a.addr.family = AF_VSOCK;
2108 if (strncmp(addr, "vsock:", 6) == 0)
2109 addr += 6;
2110
2111 if (is_port)
2112 port = addr;
2113 else {
2114 port = strchr(addr, ':');
2115 if (port) {
2116 *port = '\0';
2117 port++;
2118 }
2119 }
2120
2121 if (port && strcmp(port, "*") &&
2122 get_u32((__u32 *)&a.port, port, 0))
2123 return NULL;
2124
2125 if (addr[0] && strcmp(addr, "*")) {
2126 a.addr.bitlen = 32;
2127 if (get_u32(&cid, addr, 0))
2128 return NULL;
2129 }
2130 vsock_set_inet_prefix(&a.addr, cid);
2131 fam = AF_VSOCK;
2132 goto out;
2133 }
2134
2135 if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
2136 fam = AF_INET;
2137 if (!strncmp(addr, "inet:", 5))
2138 addr += 5;
2139 } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
2140 fam = AF_INET6;
2141 if (!strncmp(addr, "inet6:", 6))
2142 addr += 6;
2143 }
2144
2145 /* URL-like literal [] */
2146 if (addr[0] == '[') {
2147 addr++;
2148 if ((port = strchr(addr, ']')) == NULL)
2149 return NULL;
2150 *port++ = 0;
2151 } else if (addr[0] == '*') {
2152 port = addr+1;
2153 } else {
2154 port = strrchr(strchr(addr, '/') ? : addr, ':');
2155 }
2156
2157 if (is_port)
2158 port = addr;
2159
2160 if (port && *port) {
2161 if (*port == ':')
2162 *port++ = 0;
2163
2164 if (*port && *port != '*') {
2165 if (get_integer(&a.port, port, 0)) {
2166 struct servent *se1 = NULL;
2167 struct servent *se2 = NULL;
2168
2169 if (current_filter.dbs&(1<<UDP_DB))
2170 se1 = getservbyname(port, UDP_PROTO);
2171 if (current_filter.dbs&(1<<TCP_DB))
2172 se2 = getservbyname(port, TCP_PROTO);
2173 if (se1 && se2 && se1->s_port != se2->s_port) {
2174 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
2175 return NULL;
2176 }
2177 if (!se1)
2178 se1 = se2;
2179 if (se1) {
2180 a.port = ntohs(se1->s_port);
2181 } else {
2182 struct scache *s;
2183
2184 for (s = rlist; s; s = s->next) {
2185 if ((s->proto == UDP_PROTO &&
2186 (current_filter.dbs&(1<<UDP_DB))) ||
2187 (s->proto == TCP_PROTO &&
2188 (current_filter.dbs&(1<<TCP_DB)))) {
2189 if (s->name && strcmp(s->name, port) == 0) {
2190 if (a.port > 0 && a.port != s->port) {
2191 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
2192 return NULL;
2193 }
2194 a.port = s->port;
2195 }
2196 }
2197 }
2198 if (a.port <= 0) {
2199 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
2200 return NULL;
2201 }
2202 }
2203 }
2204 }
2205 }
2206 if (!is_port && *addr && *addr != '*') {
2207 if (get_prefix_1(&a.addr, addr, fam)) {
2208 if (get_dns_host(&a, addr, fam)) {
2209 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
2210 return NULL;
2211 }
2212 }
2213 }
2214
2215 out:
2216 if (fam != AF_UNSPEC) {
2217 int states = f->states;
2218 f->families = 0;
2219 filter_af_set(f, fam);
2220 filter_states_set(f, states);
2221 }
2222
2223 res = malloc(sizeof(*res));
2224 if (res)
2225 memcpy(res, &a, sizeof(a));
2226 return res;
2227 }
2228
2229 void *parse_markmask(const char *markmask)
2230 {
2231 struct aafilter a, *res;
2232
2233 if (strchr(markmask, '/')) {
2234 if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
2235 return NULL;
2236 } else {
2237 a.mask = 0xffffffff;
2238 if (sscanf(markmask, "%i", &a.mark) != 1)
2239 return NULL;
2240 }
2241
2242 res = malloc(sizeof(*res));
2243 if (res)
2244 memcpy(res, &a, sizeof(a));
2245 return res;
2246 }
2247
2248 static void proc_ctx_print(struct sockstat *s)
2249 {
2250 char *buf;
2251
2252 if (show_proc_ctx || show_sock_ctx) {
2253 if (find_entry(s->ino, &buf,
2254 (show_proc_ctx & show_sock_ctx) ?
2255 PROC_SOCK_CTX : PROC_CTX) > 0) {
2256 out(" users:(%s)", buf);
2257 free(buf);
2258 }
2259 } else if (show_users) {
2260 if (find_entry(s->ino, &buf, USERS) > 0) {
2261 out(" users:(%s)", buf);
2262 free(buf);
2263 }
2264 }
2265 }
2266
2267 static void inet_stats_print(struct sockstat *s, bool v6only)
2268 {
2269 sock_state_print(s);
2270
2271 inet_addr_print(&s->local, s->lport, s->iface, v6only);
2272 inet_addr_print(&s->remote, s->rport, 0, v6only);
2273
2274 proc_ctx_print(s);
2275 }
2276
2277 static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
2278 sockstat * s)
2279 {
2280 s->local.family = s->remote.family = family;
2281 if (family == AF_INET) {
2282 sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
2283 sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
2284 s->local.bytelen = s->remote.bytelen = 4;
2285 return 0;
2286 } else {
2287 sscanf(loc, "%08x%08x%08x%08x:%x",
2288 s->local.data,
2289 s->local.data + 1,
2290 s->local.data + 2,
2291 s->local.data + 3,
2292 &s->lport);
2293 sscanf(rem, "%08x%08x%08x%08x:%x",
2294 s->remote.data,
2295 s->remote.data + 1,
2296 s->remote.data + 2,
2297 s->remote.data + 3,
2298 &s->rport);
2299 s->local.bytelen = s->remote.bytelen = 16;
2300 return 0;
2301 }
2302 return -1;
2303 }
2304
2305 static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
2306 {
2307 char *p;
2308
2309 if ((p = strchr(line, ':')) == NULL)
2310 return -1;
2311
2312 *loc = p+2;
2313 if ((p = strchr(*loc, ':')) == NULL)
2314 return -1;
2315
2316 p[5] = 0;
2317 *rem = p+6;
2318 if ((p = strchr(*rem, ':')) == NULL)
2319 return -1;
2320
2321 p[5] = 0;
2322 *data = p+6;
2323 return 0;
2324 }
2325
2326 static char *sprint_bw(char *buf, double bw)
2327 {
2328 if (bw > 1000000.)
2329 sprintf(buf, "%.1fM", bw / 1000000.);
2330 else if (bw > 1000.)
2331 sprintf(buf, "%.1fK", bw / 1000.);
2332 else
2333 sprintf(buf, "%g", bw);
2334
2335 return buf;
2336 }
2337
2338 static void sctp_stats_print(struct sctp_info *s)
2339 {
2340 if (s->sctpi_tag)
2341 out(" tag:%x", s->sctpi_tag);
2342 if (s->sctpi_state)
2343 out(" state:%s", sctp_sstate_name[s->sctpi_state]);
2344 if (s->sctpi_rwnd)
2345 out(" rwnd:%d", s->sctpi_rwnd);
2346 if (s->sctpi_unackdata)
2347 out(" unackdata:%d", s->sctpi_unackdata);
2348 if (s->sctpi_penddata)
2349 out(" penddata:%d", s->sctpi_penddata);
2350 if (s->sctpi_instrms)
2351 out(" instrms:%d", s->sctpi_instrms);
2352 if (s->sctpi_outstrms)
2353 out(" outstrms:%d", s->sctpi_outstrms);
2354 if (s->sctpi_inqueue)
2355 out(" inqueue:%d", s->sctpi_inqueue);
2356 if (s->sctpi_outqueue)
2357 out(" outqueue:%d", s->sctpi_outqueue);
2358 if (s->sctpi_overall_error)
2359 out(" overerr:%d", s->sctpi_overall_error);
2360 if (s->sctpi_max_burst)
2361 out(" maxburst:%d", s->sctpi_max_burst);
2362 if (s->sctpi_maxseg)
2363 out(" maxseg:%d", s->sctpi_maxseg);
2364 if (s->sctpi_peer_rwnd)
2365 out(" prwnd:%d", s->sctpi_peer_rwnd);
2366 if (s->sctpi_peer_tag)
2367 out(" ptag:%x", s->sctpi_peer_tag);
2368 if (s->sctpi_peer_capable)
2369 out(" pcapable:%d", s->sctpi_peer_capable);
2370 if (s->sctpi_peer_sack)
2371 out(" psack:%d", s->sctpi_peer_sack);
2372 if (s->sctpi_s_autoclose)
2373 out(" autoclose:%d", s->sctpi_s_autoclose);
2374 if (s->sctpi_s_adaptation_ind)
2375 out(" adapind:%d", s->sctpi_s_adaptation_ind);
2376 if (s->sctpi_s_pd_point)
2377 out(" pdpoint:%d", s->sctpi_s_pd_point);
2378 if (s->sctpi_s_nodelay)
2379 out(" nodealy:%d", s->sctpi_s_nodelay);
2380 if (s->sctpi_s_disable_fragments)
2381 out(" nofrag:%d", s->sctpi_s_disable_fragments);
2382 if (s->sctpi_s_v4mapped)
2383 out(" v4mapped:%d", s->sctpi_s_v4mapped);
2384 if (s->sctpi_s_frag_interleave)
2385 out(" fraginl:%d", s->sctpi_s_frag_interleave);
2386 }
2387
2388 static void tcp_stats_print(struct tcpstat *s)
2389 {
2390 char b1[64];
2391
2392 if (s->has_ts_opt)
2393 out(" ts");
2394 if (s->has_sack_opt)
2395 out(" sack");
2396 if (s->has_ecn_opt)
2397 out(" ecn");
2398 if (s->has_ecnseen_opt)
2399 out(" ecnseen");
2400 if (s->has_fastopen_opt)
2401 out(" fastopen");
2402 if (s->cong_alg[0])
2403 out(" %s", s->cong_alg);
2404 if (s->has_wscale_opt)
2405 out(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
2406 if (s->rto)
2407 out(" rto:%g", s->rto);
2408 if (s->backoff)
2409 out(" backoff:%u", s->backoff);
2410 if (s->rtt)
2411 out(" rtt:%g/%g", s->rtt, s->rttvar);
2412 if (s->ato)
2413 out(" ato:%g", s->ato);
2414
2415 if (s->qack)
2416 out(" qack:%d", s->qack);
2417 if (s->qack & 1)
2418 out(" bidir");
2419
2420 if (s->mss)
2421 out(" mss:%d", s->mss);
2422 if (s->pmtu)
2423 out(" pmtu:%u", s->pmtu);
2424 if (s->rcv_mss)
2425 out(" rcvmss:%d", s->rcv_mss);
2426 if (s->advmss)
2427 out(" advmss:%d", s->advmss);
2428 if (s->cwnd)
2429 out(" cwnd:%u", s->cwnd);
2430 if (s->ssthresh)
2431 out(" ssthresh:%d", s->ssthresh);
2432
2433 if (s->bytes_sent)
2434 out(" bytes_sent:%llu", s->bytes_sent);
2435 if (s->bytes_retrans)
2436 out(" bytes_retrans:%llu", s->bytes_retrans);
2437 if (s->bytes_acked)
2438 out(" bytes_acked:%llu", s->bytes_acked);
2439 if (s->bytes_received)
2440 out(" bytes_received:%llu", s->bytes_received);
2441 if (s->segs_out)
2442 out(" segs_out:%u", s->segs_out);
2443 if (s->segs_in)
2444 out(" segs_in:%u", s->segs_in);
2445 if (s->data_segs_out)
2446 out(" data_segs_out:%u", s->data_segs_out);
2447 if (s->data_segs_in)
2448 out(" data_segs_in:%u", s->data_segs_in);
2449
2450 if (s->dctcp && s->dctcp->enabled) {
2451 struct dctcpstat *dctcp = s->dctcp;
2452
2453 out(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
2454 dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
2455 dctcp->ab_tot);
2456 } else if (s->dctcp) {
2457 out(" dctcp:fallback_mode");
2458 }
2459
2460 if (s->bbr_info) {
2461 __u64 bw;
2462
2463 bw = s->bbr_info->bbr_bw_hi;
2464 bw <<= 32;
2465 bw |= s->bbr_info->bbr_bw_lo;
2466
2467 out(" bbr:(bw:%sbps,mrtt:%g",
2468 sprint_bw(b1, bw * 8.0),
2469 (double)s->bbr_info->bbr_min_rtt / 1000.0);
2470 if (s->bbr_info->bbr_pacing_gain)
2471 out(",pacing_gain:%g",
2472 (double)s->bbr_info->bbr_pacing_gain / 256.0);
2473 if (s->bbr_info->bbr_cwnd_gain)
2474 out(",cwnd_gain:%g",
2475 (double)s->bbr_info->bbr_cwnd_gain / 256.0);
2476 out(")");
2477 }
2478
2479 if (s->send_bps)
2480 out(" send %sbps", sprint_bw(b1, s->send_bps));
2481 if (s->lastsnd)
2482 out(" lastsnd:%u", s->lastsnd);
2483 if (s->lastrcv)
2484 out(" lastrcv:%u", s->lastrcv);
2485 if (s->lastack)
2486 out(" lastack:%u", s->lastack);
2487
2488 if (s->pacing_rate) {
2489 out(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
2490 if (s->pacing_rate_max)
2491 out("/%sbps", sprint_bw(b1, s->pacing_rate_max));
2492 }
2493
2494 if (s->delivery_rate)
2495 out(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
2496 if (s->delivered)
2497 out(" delivered:%u", s->delivered);
2498 if (s->delivered_ce)
2499 out(" delivered_ce:%u", s->delivered_ce);
2500 if (s->app_limited)
2501 out(" app_limited");
2502
2503 if (s->busy_time) {
2504 out(" busy:%llums", s->busy_time / 1000);
2505 if (s->rwnd_limited)
2506 out(" rwnd_limited:%llums(%.1f%%)",
2507 s->rwnd_limited / 1000,
2508 100.0 * s->rwnd_limited / s->busy_time);
2509 if (s->sndbuf_limited)
2510 out(" sndbuf_limited:%llums(%.1f%%)",
2511 s->sndbuf_limited / 1000,
2512 100.0 * s->sndbuf_limited / s->busy_time);
2513 }
2514
2515 if (s->unacked)
2516 out(" unacked:%u", s->unacked);
2517 if (s->retrans || s->retrans_total)
2518 out(" retrans:%u/%u", s->retrans, s->retrans_total);
2519 if (s->lost)
2520 out(" lost:%u", s->lost);
2521 if (s->sacked && s->ss.state != SS_LISTEN)
2522 out(" sacked:%u", s->sacked);
2523 if (s->dsack_dups)
2524 out(" dsack_dups:%u", s->dsack_dups);
2525 if (s->fackets)
2526 out(" fackets:%u", s->fackets);
2527 if (s->reordering != 3)
2528 out(" reordering:%d", s->reordering);
2529 if (s->reord_seen)
2530 out(" reord_seen:%d", s->reord_seen);
2531 if (s->rcv_rtt)
2532 out(" rcv_rtt:%g", s->rcv_rtt);
2533 if (s->rcv_space)
2534 out(" rcv_space:%d", s->rcv_space);
2535 if (s->rcv_ssthresh)
2536 out(" rcv_ssthresh:%u", s->rcv_ssthresh);
2537 if (s->not_sent)
2538 out(" notsent:%u", s->not_sent);
2539 if (s->min_rtt)
2540 out(" minrtt:%g", s->min_rtt);
2541 }
2542
2543 static void tcp_timer_print(struct tcpstat *s)
2544 {
2545 static const char * const tmr_name[] = {
2546 "off",
2547 "on",
2548 "keepalive",
2549 "timewait",
2550 "persist",
2551 "unknown"
2552 };
2553
2554 if (s->timer) {
2555 if (s->timer > 4)
2556 s->timer = 5;
2557 out(" timer:(%s,%s,%d)",
2558 tmr_name[s->timer],
2559 print_ms_timer(s->timeout),
2560 s->retrans);
2561 }
2562 }
2563
2564 static void sctp_timer_print(struct tcpstat *s)
2565 {
2566 if (s->timer)
2567 out(" timer:(T3_RTX,%s,%d)",
2568 print_ms_timer(s->timeout), s->retrans);
2569 }
2570
2571 static int tcp_show_line(char *line, const struct filter *f, int family)
2572 {
2573 int rto = 0, ato = 0;
2574 struct tcpstat s = {};
2575 char *loc, *rem, *data;
2576 char opt[256];
2577 int n;
2578 int hz = get_user_hz();
2579
2580 if (proc_inet_split_line(line, &loc, &rem, &data))
2581 return -1;
2582
2583 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2584
2585 if (!(f->states & (1 << state)))
2586 return 0;
2587
2588 proc_parse_inet_addr(loc, rem, family, &s.ss);
2589
2590 if (f->f && run_ssfilter(f->f, &s.ss) == 0)
2591 return 0;
2592
2593 opt[0] = 0;
2594 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
2595 &s.ss.state, &s.ss.wq, &s.ss.rq,
2596 &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
2597 &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
2598 &s.ssthresh, opt);
2599
2600 if (n < 17)
2601 opt[0] = 0;
2602
2603 if (n < 12) {
2604 rto = 0;
2605 s.cwnd = 2;
2606 s.ssthresh = -1;
2607 ato = s.qack = 0;
2608 }
2609
2610 s.retrans = s.timer != 1 ? s.probes : s.retrans;
2611 s.timeout = (s.timeout * 1000 + hz - 1) / hz;
2612 s.ato = (double)ato / hz;
2613 s.qack /= 2;
2614 s.rto = (double)rto;
2615 s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
2616 s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
2617 s.ss.type = IPPROTO_TCP;
2618
2619 inet_stats_print(&s.ss, false);
2620
2621 if (show_options)
2622 tcp_timer_print(&s);
2623
2624 if (show_details) {
2625 sock_details_print(&s.ss);
2626 if (opt[0])
2627 out(" opt:\"%s\"", opt);
2628 }
2629
2630 if (show_tcpinfo)
2631 tcp_stats_print(&s);
2632
2633 return 0;
2634 }
2635
2636 static int generic_record_read(FILE *fp,
2637 int (*worker)(char*, const struct filter *, int),
2638 const struct filter *f, int fam)
2639 {
2640 char line[256];
2641
2642 /* skip header */
2643 if (fgets(line, sizeof(line), fp) == NULL)
2644 goto outerr;
2645
2646 while (fgets(line, sizeof(line), fp) != NULL) {
2647 int n = strlen(line);
2648
2649 if (n == 0 || line[n-1] != '\n') {
2650 errno = -EINVAL;
2651 return -1;
2652 }
2653 line[n-1] = 0;
2654
2655 if (worker(line, f, fam) < 0)
2656 return 0;
2657 }
2658 outerr:
2659
2660 return ferror(fp) ? -1 : 0;
2661 }
2662
2663 static void print_skmeminfo(struct rtattr *tb[], int attrtype)
2664 {
2665 const __u32 *skmeminfo;
2666
2667 if (!tb[attrtype]) {
2668 if (attrtype == INET_DIAG_SKMEMINFO) {
2669 if (!tb[INET_DIAG_MEMINFO])
2670 return;
2671
2672 const struct inet_diag_meminfo *minfo =
2673 RTA_DATA(tb[INET_DIAG_MEMINFO]);
2674
2675 out(" mem:(r%u,w%u,f%u,t%u)",
2676 minfo->idiag_rmem,
2677 minfo->idiag_wmem,
2678 minfo->idiag_fmem,
2679 minfo->idiag_tmem);
2680 }
2681 return;
2682 }
2683
2684 skmeminfo = RTA_DATA(tb[attrtype]);
2685
2686 out(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
2687 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
2688 skmeminfo[SK_MEMINFO_RCVBUF],
2689 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
2690 skmeminfo[SK_MEMINFO_SNDBUF],
2691 skmeminfo[SK_MEMINFO_FWD_ALLOC],
2692 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
2693 skmeminfo[SK_MEMINFO_OPTMEM]);
2694
2695 if (RTA_PAYLOAD(tb[attrtype]) >=
2696 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
2697 out(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
2698
2699 if (RTA_PAYLOAD(tb[attrtype]) >=
2700 (SK_MEMINFO_DROPS + 1) * sizeof(__u32))
2701 out(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
2702
2703 out(")");
2704 }
2705
2706 static void print_md5sig(struct tcp_diag_md5sig *sig)
2707 {
2708 out("%s/%d=",
2709 format_host(sig->tcpm_family,
2710 sig->tcpm_family == AF_INET6 ? 16 : 4,
2711 &sig->tcpm_addr),
2712 sig->tcpm_prefixlen);
2713 print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
2714 }
2715
2716 #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
2717
2718 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2719 struct rtattr *tb[])
2720 {
2721 double rtt = 0;
2722 struct tcpstat s = {};
2723
2724 s.ss.state = r->idiag_state;
2725
2726 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2727
2728 if (tb[INET_DIAG_INFO]) {
2729 struct tcp_info *info;
2730 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2731
2732 /* workaround for older kernels with less fields */
2733 if (len < sizeof(*info)) {
2734 info = alloca(sizeof(*info));
2735 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2736 memset((char *)info + len, 0, sizeof(*info) - len);
2737 } else
2738 info = RTA_DATA(tb[INET_DIAG_INFO]);
2739
2740 if (show_options) {
2741 s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
2742 s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
2743 s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
2744 s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
2745 s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
2746 }
2747
2748 if (tb[INET_DIAG_CONG])
2749 strncpy(s.cong_alg,
2750 rta_getattr_str(tb[INET_DIAG_CONG]),
2751 sizeof(s.cong_alg) - 1);
2752
2753 if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
2754 s.has_wscale_opt = true;
2755 s.snd_wscale = info->tcpi_snd_wscale;
2756 s.rcv_wscale = info->tcpi_rcv_wscale;
2757 }
2758
2759 if (info->tcpi_rto && info->tcpi_rto != 3000000)
2760 s.rto = (double)info->tcpi_rto / 1000;
2761
2762 s.backoff = info->tcpi_backoff;
2763 s.rtt = (double)info->tcpi_rtt / 1000;
2764 s.rttvar = (double)info->tcpi_rttvar / 1000;
2765 s.ato = (double)info->tcpi_ato / 1000;
2766 s.mss = info->tcpi_snd_mss;
2767 s.rcv_mss = info->tcpi_rcv_mss;
2768 s.advmss = info->tcpi_advmss;
2769 s.rcv_space = info->tcpi_rcv_space;
2770 s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
2771 s.lastsnd = info->tcpi_last_data_sent;
2772 s.lastrcv = info->tcpi_last_data_recv;
2773 s.lastack = info->tcpi_last_ack_recv;
2774 s.unacked = info->tcpi_unacked;
2775 s.retrans = info->tcpi_retrans;
2776 s.retrans_total = info->tcpi_total_retrans;
2777 s.lost = info->tcpi_lost;
2778 s.sacked = info->tcpi_sacked;
2779 s.fackets = info->tcpi_fackets;
2780 s.reordering = info->tcpi_reordering;
2781 s.rcv_ssthresh = info->tcpi_rcv_ssthresh;
2782 s.cwnd = info->tcpi_snd_cwnd;
2783 s.pmtu = info->tcpi_pmtu;
2784
2785 if (info->tcpi_snd_ssthresh < 0xFFFF)
2786 s.ssthresh = info->tcpi_snd_ssthresh;
2787
2788 rtt = (double) info->tcpi_rtt;
2789 if (tb[INET_DIAG_VEGASINFO]) {
2790 const struct tcpvegas_info *vinfo
2791 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
2792
2793 if (vinfo->tcpv_enabled &&
2794 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
2795 rtt = vinfo->tcpv_rtt;
2796 }
2797
2798 if (tb[INET_DIAG_DCTCPINFO]) {
2799 struct dctcpstat *dctcp = malloc(sizeof(struct
2800 dctcpstat));
2801
2802 const struct tcp_dctcp_info *dinfo
2803 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
2804
2805 dctcp->enabled = !!dinfo->dctcp_enabled;
2806 dctcp->ce_state = dinfo->dctcp_ce_state;
2807 dctcp->alpha = dinfo->dctcp_alpha;
2808 dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
2809 dctcp->ab_tot = dinfo->dctcp_ab_tot;
2810 s.dctcp = dctcp;
2811 }
2812
2813 if (tb[INET_DIAG_BBRINFO]) {
2814 const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
2815 int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
2816 sizeof(*s.bbr_info));
2817
2818 s.bbr_info = calloc(1, sizeof(*s.bbr_info));
2819 if (s.bbr_info && bbr_info)
2820 memcpy(s.bbr_info, bbr_info, len);
2821 }
2822
2823 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
2824 s.send_bps = (double) info->tcpi_snd_cwnd *
2825 (double)info->tcpi_snd_mss * 8000000. / rtt;
2826 }
2827
2828 if (info->tcpi_pacing_rate &&
2829 info->tcpi_pacing_rate != ~0ULL) {
2830 s.pacing_rate = info->tcpi_pacing_rate * 8.;
2831
2832 if (info->tcpi_max_pacing_rate &&
2833 info->tcpi_max_pacing_rate != ~0ULL)
2834 s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
2835 }
2836 s.bytes_acked = info->tcpi_bytes_acked;
2837 s.bytes_received = info->tcpi_bytes_received;
2838 s.segs_out = info->tcpi_segs_out;
2839 s.segs_in = info->tcpi_segs_in;
2840 s.data_segs_out = info->tcpi_data_segs_out;
2841 s.data_segs_in = info->tcpi_data_segs_in;
2842 s.not_sent = info->tcpi_notsent_bytes;
2843 if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
2844 s.min_rtt = (double) info->tcpi_min_rtt / 1000;
2845 s.delivery_rate = info->tcpi_delivery_rate * 8.;
2846 s.app_limited = info->tcpi_delivery_rate_app_limited;
2847 s.busy_time = info->tcpi_busy_time;
2848 s.rwnd_limited = info->tcpi_rwnd_limited;
2849 s.sndbuf_limited = info->tcpi_sndbuf_limited;
2850 s.delivered = info->tcpi_delivered;
2851 s.delivered_ce = info->tcpi_delivered_ce;
2852 s.dsack_dups = info->tcpi_dsack_dups;
2853 s.reord_seen = info->tcpi_reord_seen;
2854 s.bytes_sent = info->tcpi_bytes_sent;
2855 s.bytes_retrans = info->tcpi_bytes_retrans;
2856 tcp_stats_print(&s);
2857 free(s.dctcp);
2858 free(s.bbr_info);
2859 }
2860 if (tb[INET_DIAG_MD5SIG]) {
2861 struct tcp_diag_md5sig *sig = RTA_DATA(tb[INET_DIAG_MD5SIG]);
2862 int len = RTA_PAYLOAD(tb[INET_DIAG_MD5SIG]);
2863
2864 out(" md5keys:");
2865 print_md5sig(sig++);
2866 for (len -= sizeof(*sig); len > 0; len -= sizeof(*sig)) {
2867 out(",");
2868 print_md5sig(sig++);
2869 }
2870 }
2871 }
2872
2873 static const char *format_host_sa(struct sockaddr_storage *sa)
2874 {
2875 union {
2876 struct sockaddr_in sin;
2877 struct sockaddr_in6 sin6;
2878 } *saddr = (void *)sa;
2879
2880 switch (sa->ss_family) {
2881 case AF_INET:
2882 return format_host(AF_INET, 4, &saddr->sin.sin_addr);
2883 case AF_INET6:
2884 return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
2885 default:
2886 return "";
2887 }
2888 }
2889
2890 static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2891 struct rtattr *tb[])
2892 {
2893 struct sockaddr_storage *sa;
2894 int len;
2895
2896 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2897
2898 if (tb[INET_DIAG_LOCALS]) {
2899 len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
2900 sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
2901
2902 out("locals:%s", format_host_sa(sa));
2903 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2904 out(",%s", format_host_sa(sa));
2905
2906 }
2907 if (tb[INET_DIAG_PEERS]) {
2908 len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
2909 sa = RTA_DATA(tb[INET_DIAG_PEERS]);
2910
2911 out(" peers:%s", format_host_sa(sa));
2912 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2913 out(",%s", format_host_sa(sa));
2914 }
2915 if (tb[INET_DIAG_INFO]) {
2916 struct sctp_info *info;
2917 len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2918
2919 /* workaround for older kernels with less fields */
2920 if (len < sizeof(*info)) {
2921 info = alloca(sizeof(*info));
2922 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2923 memset((char *)info + len, 0, sizeof(*info) - len);
2924 } else
2925 info = RTA_DATA(tb[INET_DIAG_INFO]);
2926
2927 sctp_stats_print(info);
2928 }
2929 }
2930
2931 static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
2932 {
2933 struct rtattr *tb[INET_DIAG_MAX+1];
2934 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2935
2936 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2937 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2938
2939 s->state = r->idiag_state;
2940 s->local.family = s->remote.family = r->idiag_family;
2941 s->lport = ntohs(r->id.idiag_sport);
2942 s->rport = ntohs(r->id.idiag_dport);
2943 s->wq = r->idiag_wqueue;
2944 s->rq = r->idiag_rqueue;
2945 s->ino = r->idiag_inode;
2946 s->uid = r->idiag_uid;
2947 s->iface = r->id.idiag_if;
2948 s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
2949
2950 s->mark = 0;
2951 if (tb[INET_DIAG_MARK])
2952 s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]);
2953 if (tb[INET_DIAG_PROTOCOL])
2954 s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2955 else
2956 s->raw_prot = 0;
2957
2958 if (s->local.family == AF_INET)
2959 s->local.bytelen = s->remote.bytelen = 4;
2960 else
2961 s->local.bytelen = s->remote.bytelen = 16;
2962
2963 memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
2964 memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
2965 }
2966
2967 static int inet_show_sock(struct nlmsghdr *nlh,
2968 struct sockstat *s)
2969 {
2970 struct rtattr *tb[INET_DIAG_MAX+1];
2971 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2972 unsigned char v6only = 0;
2973
2974 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2975 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2976
2977 if (tb[INET_DIAG_PROTOCOL])
2978 s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2979
2980 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
2981 v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]);
2982
2983 inet_stats_print(s, v6only);
2984
2985 if (show_options) {
2986 struct tcpstat t = {};
2987
2988 t.timer = r->idiag_timer;
2989 t.timeout = r->idiag_expires;
2990 t.retrans = r->idiag_retrans;
2991 if (s->type == IPPROTO_SCTP)
2992 sctp_timer_print(&t);
2993 else
2994 tcp_timer_print(&t);
2995 }
2996
2997 if (show_details) {
2998 sock_details_print(s);
2999 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
3000 out(" v6only:%u", v6only);
3001
3002 if (tb[INET_DIAG_SHUTDOWN]) {
3003 unsigned char mask;
3004
3005 mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]);
3006 out(" %c-%c",
3007 mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3008 }
3009 }
3010
3011 if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
3012 out("\n\t");
3013 if (s->type == IPPROTO_SCTP)
3014 sctp_show_info(nlh, r, tb);
3015 else
3016 tcp_show_info(nlh, r, tb);
3017 }
3018 sctp_ino = s->ino;
3019
3020 return 0;
3021 }
3022
3023 static int tcpdiag_send(int fd, int protocol, struct filter *f)
3024 {
3025 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
3026 struct {
3027 struct nlmsghdr nlh;
3028 struct inet_diag_req r;
3029 } req = {
3030 .nlh.nlmsg_len = sizeof(req),
3031 .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
3032 .nlh.nlmsg_seq = MAGIC_SEQ,
3033 .r.idiag_family = AF_INET,
3034 .r.idiag_states = f->states,
3035 };
3036 char *bc = NULL;
3037 int bclen;
3038 struct msghdr msg;
3039 struct rtattr rta;
3040 struct iovec iov[3];
3041 int iovlen = 1;
3042
3043 if (protocol == IPPROTO_UDP)
3044 return -1;
3045
3046 if (protocol == IPPROTO_TCP)
3047 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
3048 else
3049 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
3050 if (show_mem) {
3051 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
3052 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
3053 }
3054
3055 if (show_tcpinfo) {
3056 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
3057 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
3058 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
3059 }
3060
3061 iov[0] = (struct iovec){
3062 .iov_base = &req,
3063 .iov_len = sizeof(req)
3064 };
3065 if (f->f) {
3066 bclen = ssfilter_bytecompile(f->f, &bc);
3067 if (bclen) {
3068 rta.rta_type = INET_DIAG_REQ_BYTECODE;
3069 rta.rta_len = RTA_LENGTH(bclen);
3070 iov[1] = (struct iovec){ &rta, sizeof(rta) };
3071 iov[2] = (struct iovec){ bc, bclen };
3072 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
3073 iovlen = 3;
3074 }
3075 }
3076
3077 msg = (struct msghdr) {
3078 .msg_name = (void *)&nladdr,
3079 .msg_namelen = sizeof(nladdr),
3080 .msg_iov = iov,
3081 .msg_iovlen = iovlen,
3082 };
3083
3084 if (sendmsg(fd, &msg, 0) < 0) {
3085 close(fd);
3086 return -1;
3087 }
3088
3089 return 0;
3090 }
3091
3092 static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
3093 {
3094 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
3095 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
3096 char *bc = NULL;
3097 int bclen;
3098 struct msghdr msg;
3099 struct rtattr rta;
3100 struct iovec iov[3];
3101 int iovlen = 1;
3102
3103 if (family == PF_UNSPEC)
3104 return tcpdiag_send(fd, protocol, f);
3105
3106 memset(&req.r, 0, sizeof(req.r));
3107 req.r.sdiag_family = family;
3108 req.r.sdiag_protocol = protocol;
3109 req.r.idiag_states = f->states;
3110 if (show_mem) {
3111 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
3112 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
3113 }
3114
3115 if (show_tcpinfo) {
3116 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
3117 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
3118 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
3119 }
3120
3121 iov[0] = (struct iovec){
3122 .iov_base = &req,
3123 .iov_len = sizeof(req)
3124 };
3125 if (f->f) {
3126 bclen = ssfilter_bytecompile(f->f, &bc);
3127 if (bclen) {
3128 rta.rta_type = INET_DIAG_REQ_BYTECODE;
3129 rta.rta_len = RTA_LENGTH(bclen);
3130 iov[1] = (struct iovec){ &rta, sizeof(rta) };
3131 iov[2] = (struct iovec){ bc, bclen };
3132 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
3133 iovlen = 3;
3134 }
3135 }
3136
3137 msg = (struct msghdr) {
3138 .msg_name = (void *)&nladdr,
3139 .msg_namelen = sizeof(nladdr),
3140 .msg_iov = iov,
3141 .msg_iovlen = iovlen,
3142 };
3143
3144 if (sendmsg(fd, &msg, 0) < 0) {
3145 close(fd);
3146 return -1;
3147 }
3148
3149 return 0;
3150 }
3151
3152 struct inet_diag_arg {
3153 struct filter *f;
3154 int protocol;
3155 struct rtnl_handle *rth;
3156 };
3157
3158 static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
3159 {
3160 struct inet_diag_msg *d = NLMSG_DATA(h);
3161 struct inet_diag_arg *diag_arg = arg;
3162 struct rtnl_handle *rth = diag_arg->rth;
3163
3164 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
3165
3166 req.nlh.nlmsg_type = SOCK_DESTROY;
3167 req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
3168 req.nlh.nlmsg_seq = ++rth->seq;
3169 req.r.sdiag_family = d->idiag_family;
3170 req.r.sdiag_protocol = diag_arg->protocol;
3171 req.r.id = d->id;
3172
3173 if (diag_arg->protocol == IPPROTO_RAW) {
3174 struct inet_diag_req_raw *raw = (void *)&req.r;
3175
3176 BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
3177 raw->sdiag_raw_protocol = s->raw_prot;
3178 }
3179
3180 return rtnl_talk(rth, &req.nlh, NULL);
3181 }
3182
3183 static int show_one_inet_sock(struct nlmsghdr *h, void *arg)
3184 {
3185 int err;
3186 struct inet_diag_arg *diag_arg = arg;
3187 struct inet_diag_msg *r = NLMSG_DATA(h);
3188 struct sockstat s = {};
3189
3190 if (!(diag_arg->f->families & FAMILY_MASK(r->idiag_family)))
3191 return 0;
3192
3193 parse_diag_msg(h, &s);
3194 s.type = diag_arg->protocol;
3195
3196 if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
3197 return 0;
3198
3199 if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
3200 if (errno == EOPNOTSUPP || errno == ENOENT) {
3201 /* Socket can't be closed, or is already closed. */
3202 return 0;
3203 } else {
3204 perror("SOCK_DESTROY answers");
3205 return -1;
3206 }
3207 }
3208
3209 err = inet_show_sock(h, &s);
3210 if (err < 0)
3211 return err;
3212
3213 return 0;
3214 }
3215
3216 static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
3217 {
3218 int err = 0;
3219 struct rtnl_handle rth, rth2;
3220 int family = PF_INET;
3221 struct inet_diag_arg arg = { .f = f, .protocol = protocol };
3222
3223 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3224 return -1;
3225
3226 if (f->kill) {
3227 if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
3228 rtnl_close(&rth);
3229 return -1;
3230 }
3231 arg.rth = &rth2;
3232 }
3233
3234 rth.dump = MAGIC_SEQ;
3235 rth.dump_fp = dump_fp;
3236 if (preferred_family == PF_INET6)
3237 family = PF_INET6;
3238
3239 again:
3240 if ((err = sockdiag_send(family, rth.fd, protocol, f)))
3241 goto Exit;
3242
3243 if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
3244 if (family != PF_UNSPEC) {
3245 family = PF_UNSPEC;
3246 goto again;
3247 }
3248 goto Exit;
3249 }
3250 if (family == PF_INET && preferred_family != PF_INET) {
3251 family = PF_INET6;
3252 goto again;
3253 }
3254
3255 Exit:
3256 rtnl_close(&rth);
3257 if (arg.rth)
3258 rtnl_close(arg.rth);
3259 return err;
3260 }
3261
3262 static int tcp_show_netlink_file(struct filter *f)
3263 {
3264 FILE *fp;
3265 char buf[16384];
3266 int err = -1;
3267
3268 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
3269 perror("fopen($TCPDIAG_FILE)");
3270 return err;
3271 }
3272
3273 while (1) {
3274 int status, err2;
3275 struct nlmsghdr *h = (struct nlmsghdr *)buf;
3276 struct sockstat s = {};
3277
3278 status = fread(buf, 1, sizeof(*h), fp);
3279 if (status < 0) {
3280 perror("Reading header from $TCPDIAG_FILE");
3281 break;
3282 }
3283 if (status != sizeof(*h)) {
3284 perror("Unexpected EOF reading $TCPDIAG_FILE");
3285 break;
3286 }
3287
3288 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
3289
3290 if (status < 0) {
3291 perror("Reading $TCPDIAG_FILE");
3292 break;
3293 }
3294 if (status + sizeof(*h) < h->nlmsg_len) {
3295 perror("Unexpected EOF reading $TCPDIAG_FILE");
3296 break;
3297 }
3298
3299 /* The only legal exit point */
3300 if (h->nlmsg_type == NLMSG_DONE) {
3301 err = 0;
3302 break;
3303 }
3304
3305 if (h->nlmsg_type == NLMSG_ERROR) {
3306 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
3307
3308 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
3309 fprintf(stderr, "ERROR truncated\n");
3310 } else {
3311 errno = -err->error;
3312 perror("TCPDIAG answered");
3313 }
3314 break;
3315 }
3316
3317 parse_diag_msg(h, &s);
3318 s.type = IPPROTO_TCP;
3319
3320 if (f && f->f && run_ssfilter(f->f, &s) == 0)
3321 continue;
3322
3323 err2 = inet_show_sock(h, &s);
3324 if (err2 < 0) {
3325 err = err2;
3326 break;
3327 }
3328 }
3329
3330 fclose(fp);
3331 return err;
3332 }
3333
3334 static int tcp_show(struct filter *f)
3335 {
3336 FILE *fp = NULL;
3337 char *buf = NULL;
3338 int bufsize = 1024*1024;
3339
3340 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3341 return 0;
3342
3343 dg_proto = TCP_PROTO;
3344
3345 if (getenv("TCPDIAG_FILE"))
3346 return tcp_show_netlink_file(f);
3347
3348 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
3349 && inet_show_netlink(f, NULL, IPPROTO_TCP) == 0)
3350 return 0;
3351
3352 /* Sigh... We have to parse /proc/net/tcp... */
3353 while (bufsize >= 64*1024) {
3354 if ((buf = malloc(bufsize)) != NULL)
3355 break;
3356 bufsize /= 2;
3357 }
3358 if (buf == NULL) {
3359 errno = ENOMEM;
3360 return -1;
3361 }
3362
3363 if (f->families & FAMILY_MASK(AF_INET)) {
3364 if ((fp = net_tcp_open()) == NULL)
3365 goto outerr;
3366
3367 setbuffer(fp, buf, bufsize);
3368 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
3369 goto outerr;
3370 fclose(fp);
3371 }
3372
3373 if ((f->families & FAMILY_MASK(AF_INET6)) &&
3374 (fp = net_tcp6_open()) != NULL) {
3375 setbuffer(fp, buf, bufsize);
3376 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
3377 goto outerr;
3378 fclose(fp);
3379 }
3380
3381 free(buf);
3382 return 0;
3383
3384 outerr:
3385 do {
3386 int saved_errno = errno;
3387
3388 free(buf);
3389 if (fp)
3390 fclose(fp);
3391 errno = saved_errno;
3392 return -1;
3393 } while (0);
3394 }
3395
3396 static int dccp_show(struct filter *f)
3397 {
3398 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3399 return 0;
3400
3401 if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT")
3402 && inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0)
3403 return 0;
3404
3405 return 0;
3406 }
3407
3408 static int sctp_show(struct filter *f)
3409 {
3410 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3411 return 0;
3412
3413 if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
3414 && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
3415 return 0;
3416
3417 return 0;
3418 }
3419
3420 static int dgram_show_line(char *line, const struct filter *f, int family)
3421 {
3422 struct sockstat s = {};
3423 char *loc, *rem, *data;
3424 char opt[256];
3425 int n;
3426
3427 if (proc_inet_split_line(line, &loc, &rem, &data))
3428 return -1;
3429
3430 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
3431
3432 if (!(f->states & (1 << state)))
3433 return 0;
3434
3435 proc_parse_inet_addr(loc, rem, family, &s);
3436
3437 if (f->f && run_ssfilter(f->f, &s) == 0)
3438 return 0;
3439
3440 opt[0] = 0;
3441 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
3442 &s.state, &s.wq, &s.rq,
3443 &s.uid, &s.ino,
3444 &s.refcnt, &s.sk, opt);
3445
3446 if (n < 9)
3447 opt[0] = 0;
3448
3449 s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
3450 inet_stats_print(&s, false);
3451
3452 if (show_details && opt[0])
3453 out(" opt:\"%s\"", opt);
3454
3455 return 0;
3456 }
3457
3458 static int udp_show(struct filter *f)
3459 {
3460 FILE *fp = NULL;
3461
3462 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3463 return 0;
3464
3465 dg_proto = UDP_PROTO;
3466
3467 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
3468 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
3469 return 0;
3470
3471 if (f->families&FAMILY_MASK(AF_INET)) {
3472 if ((fp = net_udp_open()) == NULL)
3473 goto outerr;
3474 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
3475 goto outerr;
3476 fclose(fp);
3477 }
3478
3479 if ((f->families&FAMILY_MASK(AF_INET6)) &&
3480 (fp = net_udp6_open()) != NULL) {
3481 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
3482 goto outerr;
3483 fclose(fp);
3484 }
3485 return 0;
3486
3487 outerr:
3488 do {
3489 int saved_errno = errno;
3490
3491 if (fp)
3492 fclose(fp);
3493 errno = saved_errno;
3494 return -1;
3495 } while (0);
3496 }
3497
3498 static int raw_show(struct filter *f)
3499 {
3500 FILE *fp = NULL;
3501
3502 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3503 return 0;
3504
3505 dg_proto = RAW_PROTO;
3506
3507 if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
3508 inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
3509 return 0;
3510
3511 if (f->families&FAMILY_MASK(AF_INET)) {
3512 if ((fp = net_raw_open()) == NULL)
3513 goto outerr;
3514 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
3515 goto outerr;
3516 fclose(fp);
3517 }
3518
3519 if ((f->families&FAMILY_MASK(AF_INET6)) &&
3520 (fp = net_raw6_open()) != NULL) {
3521 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
3522 goto outerr;
3523 fclose(fp);
3524 }
3525 return 0;
3526
3527 outerr:
3528 do {
3529 int saved_errno = errno;
3530
3531 if (fp)
3532 fclose(fp);
3533 errno = saved_errno;
3534 return -1;
3535 } while (0);
3536 }
3537
3538 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
3539
3540 static void unix_list_drop_first(struct sockstat **list)
3541 {
3542 struct sockstat *s = *list;
3543
3544 (*list) = (*list)->next;
3545 free(s->name);
3546 free(s);
3547 }
3548
3549 static bool unix_type_skip(struct sockstat *s, struct filter *f)
3550 {
3551 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
3552 return true;
3553 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
3554 return true;
3555 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
3556 return true;
3557 return false;
3558 }
3559
3560 static void unix_stats_print(struct sockstat *s, struct filter *f)
3561 {
3562 char port_name[30] = {};
3563
3564 sock_state_print(s);
3565
3566 sock_addr_print(s->name ?: "*", " ",
3567 int_to_str(s->lport, port_name), NULL);
3568 sock_addr_print(s->peer_name ?: "*", " ",
3569 int_to_str(s->rport, port_name), NULL);
3570
3571 proc_ctx_print(s);
3572 }
3573
3574 static int unix_show_sock(struct nlmsghdr *nlh, void *arg)
3575 {
3576 struct filter *f = (struct filter *)arg;
3577 struct unix_diag_msg *r = NLMSG_DATA(nlh);
3578 struct rtattr *tb[UNIX_DIAG_MAX+1];
3579 char name[128];
3580 struct sockstat stat = { .name = "*", .peer_name = "*" };
3581
3582 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
3583 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3584
3585 stat.type = r->udiag_type;
3586 stat.state = r->udiag_state;
3587 stat.ino = stat.lport = r->udiag_ino;
3588 stat.local.family = stat.remote.family = AF_UNIX;
3589
3590 if (unix_type_skip(&stat, f))
3591 return 0;
3592
3593 if (tb[UNIX_DIAG_RQLEN]) {
3594 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
3595
3596 stat.rq = rql->udiag_rqueue;
3597 stat.wq = rql->udiag_wqueue;
3598 }
3599 if (tb[UNIX_DIAG_NAME]) {
3600 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
3601
3602 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
3603 name[len] = '\0';
3604 if (name[0] == '\0') {
3605 int i;
3606 for (i = 0; i < len; i++)
3607 if (name[i] == '\0')
3608 name[i] = '@';
3609 }
3610 stat.name = &name[0];
3611 memcpy(stat.local.data, &stat.name, sizeof(stat.name));
3612 }
3613 if (tb[UNIX_DIAG_PEER])
3614 stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
3615
3616 if (f->f && run_ssfilter(f->f, &stat) == 0)
3617 return 0;
3618
3619 unix_stats_print(&stat, f);
3620
3621 if (show_mem)
3622 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
3623 if (show_details) {
3624 if (tb[UNIX_DIAG_SHUTDOWN]) {
3625 unsigned char mask;
3626
3627 mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]);
3628 out(" %c-%c",
3629 mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3630 }
3631 if (tb[UNIX_DIAG_VFS]) {
3632 struct unix_diag_vfs *uv = RTA_DATA(tb[UNIX_DIAG_VFS]);
3633
3634 out(" ino:%u dev:%u/%u", uv->udiag_vfs_ino, major(uv->udiag_vfs_dev),
3635 minor(uv->udiag_vfs_dev));
3636 }
3637 if (tb[UNIX_DIAG_ICONS]) {
3638 int len = RTA_PAYLOAD(tb[UNIX_DIAG_ICONS]);
3639 __u32 *peers = RTA_DATA(tb[UNIX_DIAG_ICONS]);
3640 int i;
3641
3642 out(" peers:");
3643 for (i = 0; i < len / sizeof(__u32); i++)
3644 out(" %u", peers[i]);
3645 }
3646 }
3647
3648 return 0;
3649 }
3650
3651 static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
3652 size_t size, rtnl_filter_t show_one_sock)
3653 {
3654 int ret = -1;
3655 struct rtnl_handle rth;
3656
3657 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3658 return -1;
3659
3660 rth.dump = MAGIC_SEQ;
3661
3662 if (rtnl_send(&rth, req, size) < 0)
3663 goto Exit;
3664
3665 if (rtnl_dump_filter(&rth, show_one_sock, f))
3666 goto Exit;
3667
3668 ret = 0;
3669 Exit:
3670 rtnl_close(&rth);
3671 return ret;
3672 }
3673
3674 static int unix_show_netlink(struct filter *f)
3675 {
3676 DIAG_REQUEST(req, struct unix_diag_req r);
3677
3678 req.r.sdiag_family = AF_UNIX;
3679 req.r.udiag_states = f->states;
3680 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
3681 if (show_mem)
3682 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
3683 if (show_details)
3684 req.r.udiag_show |= UDIAG_SHOW_VFS | UDIAG_SHOW_ICONS;
3685
3686 return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
3687 }
3688
3689 static int unix_show(struct filter *f)
3690 {
3691 FILE *fp;
3692 char buf[256];
3693 char name[128];
3694 int newformat = 0;
3695 int cnt;
3696 struct sockstat *list = NULL;
3697 const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
3698 SS_ESTABLISHED, SS_CLOSING };
3699
3700 if (!filter_af_get(f, AF_UNIX))
3701 return 0;
3702
3703 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
3704 && unix_show_netlink(f) == 0)
3705 return 0;
3706
3707 if ((fp = net_unix_open()) == NULL)
3708 return -1;
3709 if (!fgets(buf, sizeof(buf), fp)) {
3710 fclose(fp);
3711 return -1;
3712 }
3713
3714 if (memcmp(buf, "Peer", 4) == 0)
3715 newformat = 1;
3716 cnt = 0;
3717
3718 while (fgets(buf, sizeof(buf), fp)) {
3719 struct sockstat *u, **insp;
3720 int flags;
3721
3722 if (!(u = calloc(1, sizeof(*u))))
3723 break;
3724
3725 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
3726 &u->rport, &u->rq, &u->wq, &flags, &u->type,
3727 &u->state, &u->ino, name) < 8)
3728 name[0] = 0;
3729
3730 u->lport = u->ino;
3731 u->local.family = u->remote.family = AF_UNIX;
3732
3733 if (flags & (1 << 16)) {
3734 u->state = SS_LISTEN;
3735 } else if (u->state > 0 &&
3736 u->state <= ARRAY_SIZE(unix_state_map)) {
3737 u->state = unix_state_map[u->state-1];
3738 if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
3739 u->state = SS_ESTABLISHED;
3740 }
3741 if (unix_type_skip(u, f) ||
3742 !(f->states & (1 << u->state))) {
3743 free(u);
3744 continue;
3745 }
3746
3747 if (!newformat) {
3748 u->rport = 0;
3749 u->rq = 0;
3750 u->wq = 0;
3751 }
3752
3753 if (name[0]) {
3754 u->name = strdup(name);
3755 if (!u->name) {
3756 free(u);
3757 break;
3758 }
3759 }
3760
3761 if (u->rport) {
3762 struct sockstat *p;
3763
3764 for (p = list; p; p = p->next) {
3765 if (u->rport == p->lport)
3766 break;
3767 }
3768 if (!p)
3769 u->peer_name = "?";
3770 else
3771 u->peer_name = p->name ? : "*";
3772 }
3773
3774 if (f->f) {
3775 struct sockstat st = {
3776 .local.family = AF_UNIX,
3777 .remote.family = AF_UNIX,
3778 };
3779
3780 memcpy(st.local.data, &u->name, sizeof(u->name));
3781 /* when parsing the old format rport is set to 0 and
3782 * therefore peer_name remains NULL
3783 */
3784 if (u->peer_name && strcmp(u->peer_name, "*"))
3785 memcpy(st.remote.data, &u->peer_name,
3786 sizeof(u->peer_name));
3787 if (run_ssfilter(f->f, &st) == 0) {
3788 free(u->name);
3789 free(u);
3790 continue;
3791 }
3792 }
3793
3794 insp = &list;
3795 while (*insp) {
3796 if (u->type < (*insp)->type ||
3797 (u->type == (*insp)->type &&
3798 u->ino < (*insp)->ino))
3799 break;
3800 insp = &(*insp)->next;
3801 }
3802 u->next = *insp;
3803 *insp = u;
3804
3805 if (++cnt > MAX_UNIX_REMEMBER) {
3806 while (list) {
3807 unix_stats_print(list, f);
3808 unix_list_drop_first(&list);
3809 }
3810 cnt = 0;
3811 }
3812 }
3813 fclose(fp);
3814 while (list) {
3815 unix_stats_print(list, f);
3816 unix_list_drop_first(&list);
3817 }
3818
3819 return 0;
3820 }
3821
3822 static int packet_stats_print(struct sockstat *s, const struct filter *f)
3823 {
3824 const char *addr, *port;
3825 char ll_name[16];
3826
3827 s->local.family = s->remote.family = AF_PACKET;
3828
3829 if (f->f) {
3830 s->local.data[0] = s->prot;
3831 if (run_ssfilter(f->f, s) == 0)
3832 return 1;
3833 }
3834
3835 sock_state_print(s);
3836
3837 if (s->prot == 3)
3838 addr = "*";
3839 else
3840 addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
3841
3842 if (s->iface == 0)
3843 port = "*";
3844 else
3845 port = xll_index_to_name(s->iface);
3846
3847 sock_addr_print(addr, ":", port, NULL);
3848 sock_addr_print("", "*", "", NULL);
3849
3850 proc_ctx_print(s);
3851
3852 if (show_details)
3853 sock_details_print(s);
3854
3855 return 0;
3856 }
3857
3858 static void packet_show_ring(struct packet_diag_ring *ring)
3859 {
3860 out("blk_size:%d", ring->pdr_block_size);
3861 out(",blk_nr:%d", ring->pdr_block_nr);
3862 out(",frm_size:%d", ring->pdr_frame_size);
3863 out(",frm_nr:%d", ring->pdr_frame_nr);
3864 out(",tmo:%d", ring->pdr_retire_tmo);
3865 out(",features:0x%x", ring->pdr_features);
3866 }
3867
3868 static int packet_show_sock(struct nlmsghdr *nlh, void *arg)
3869 {
3870 const struct filter *f = arg;
3871 struct packet_diag_msg *r = NLMSG_DATA(nlh);
3872 struct packet_diag_info *pinfo = NULL;
3873 struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
3874 struct rtattr *tb[PACKET_DIAG_MAX+1];
3875 struct sockstat stat = {};
3876 uint32_t fanout = 0;
3877 bool has_fanout = false;
3878
3879 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
3880 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3881
3882 /* use /proc/net/packet if all info are not available */
3883 if (!tb[PACKET_DIAG_MEMINFO])
3884 return -1;
3885
3886 stat.type = r->pdiag_type;
3887 stat.prot = r->pdiag_num;
3888 stat.ino = r->pdiag_ino;
3889 stat.state = SS_CLOSE;
3890 stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
3891
3892 if (tb[PACKET_DIAG_MEMINFO]) {
3893 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
3894
3895 stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3896 }
3897
3898 if (tb[PACKET_DIAG_INFO]) {
3899 pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
3900 stat.lport = stat.iface = pinfo->pdi_index;
3901 }
3902
3903 if (tb[PACKET_DIAG_UID])
3904 stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]);
3905
3906 if (tb[PACKET_DIAG_RX_RING])
3907 ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
3908
3909 if (tb[PACKET_DIAG_TX_RING])
3910 ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
3911
3912 if (tb[PACKET_DIAG_FANOUT]) {
3913 has_fanout = true;
3914 fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]);
3915 }
3916
3917 if (packet_stats_print(&stat, f))
3918 return 0;
3919
3920 if (show_details) {
3921 if (pinfo) {
3922 out("\n\tver:%d", pinfo->pdi_version);
3923 out(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
3924 out(" flags( ");
3925 if (pinfo->pdi_flags & PDI_RUNNING)
3926 out("running");
3927 if (pinfo->pdi_flags & PDI_AUXDATA)
3928 out(" auxdata");
3929 if (pinfo->pdi_flags & PDI_ORIGDEV)
3930 out(" origdev");
3931 if (pinfo->pdi_flags & PDI_VNETHDR)
3932 out(" vnethdr");
3933 if (pinfo->pdi_flags & PDI_LOSS)
3934 out(" loss");
3935 if (!pinfo->pdi_flags)
3936 out("0");
3937 out(" )");
3938 }
3939 if (ring_rx) {
3940 out("\n\tring_rx(");
3941 packet_show_ring(ring_rx);
3942 out(")");
3943 }
3944 if (ring_tx) {
3945 out("\n\tring_tx(");
3946 packet_show_ring(ring_tx);
3947 out(")");
3948 }
3949 if (has_fanout) {
3950 uint16_t type = (fanout >> 16) & 0xffff;
3951
3952 out("\n\tfanout(");
3953 out("id:%d,", fanout & 0xffff);
3954 out("type:");
3955
3956 if (type == 0)
3957 out("hash");
3958 else if (type == 1)
3959 out("lb");
3960 else if (type == 2)
3961 out("cpu");
3962 else if (type == 3)
3963 out("roll");
3964 else if (type == 4)
3965 out("random");
3966 else if (type == 5)
3967 out("qm");
3968 else
3969 out("0x%x", type);
3970
3971 out(")");
3972 }
3973 }
3974
3975 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
3976 struct sock_filter *fil =
3977 RTA_DATA(tb[PACKET_DIAG_FILTER]);
3978 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
3979 sizeof(struct sock_filter);
3980
3981 out("\n\tbpf filter (%d): ", num);
3982 while (num) {
3983 out(" 0x%02x %u %u %u,",
3984 fil->code, fil->jt, fil->jf, fil->k);
3985 num--;
3986 fil++;
3987 }
3988 }
3989
3990 if (show_mem)
3991 print_skmeminfo(tb, PACKET_DIAG_MEMINFO);
3992 return 0;
3993 }
3994
3995 static int packet_show_netlink(struct filter *f)
3996 {
3997 DIAG_REQUEST(req, struct packet_diag_req r);
3998
3999 req.r.sdiag_family = AF_PACKET;
4000 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
4001 PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
4002
4003 return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
4004 }
4005
4006 static int packet_show_line(char *buf, const struct filter *f, int fam)
4007 {
4008 unsigned long long sk;
4009 struct sockstat stat = {};
4010 int type, prot, iface, state, rq, uid, ino;
4011
4012 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
4013 &sk,
4014 &type, &prot, &iface, &state,
4015 &rq, &uid, &ino);
4016
4017 if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
4018 return 0;
4019 if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
4020 return 0;
4021
4022 stat.type = type;
4023 stat.prot = prot;
4024 stat.lport = stat.iface = iface;
4025 stat.state = state;
4026 stat.rq = rq;
4027 stat.uid = uid;
4028 stat.ino = ino;
4029 stat.state = SS_CLOSE;
4030
4031 if (packet_stats_print(&stat, f))
4032 return 0;
4033
4034 return 0;
4035 }
4036
4037 static int packet_show(struct filter *f)
4038 {
4039 FILE *fp;
4040 int rc = 0;
4041
4042 if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
4043 return 0;
4044
4045 if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
4046 packet_show_netlink(f) == 0)
4047 return 0;
4048
4049 if ((fp = net_packet_open()) == NULL)
4050 return -1;
4051 if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
4052 rc = -1;
4053
4054 fclose(fp);
4055 return rc;
4056 }
4057
4058 static int netlink_show_one(struct filter *f,
4059 int prot, int pid, unsigned int groups,
4060 int state, int dst_pid, unsigned int dst_group,
4061 int rq, int wq,
4062 unsigned long long sk, unsigned long long cb)
4063 {
4064 struct sockstat st = {
4065 .state = SS_CLOSE,
4066 .rq = rq,
4067 .wq = wq,
4068 .local.family = AF_NETLINK,
4069 .remote.family = AF_NETLINK,
4070 };
4071
4072 SPRINT_BUF(prot_buf) = {};
4073 const char *prot_name;
4074 char procname[64] = {};
4075
4076 if (f->f) {
4077 st.rport = -1;
4078 st.lport = pid;
4079 st.local.data[0] = prot;
4080 if (run_ssfilter(f->f, &st) == 0)
4081 return 1;
4082 }
4083
4084 sock_state_print(&st);
4085
4086 if (resolve_services)
4087 prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
4088 else
4089 prot_name = int_to_str(prot, prot_buf);
4090
4091 if (pid == -1) {
4092 procname[0] = '*';
4093 } else if (resolve_services) {
4094 int done = 0;
4095
4096 if (!pid) {
4097 done = 1;
4098 strncpy(procname, "kernel", 7);
4099 } else if (pid > 0) {
4100 FILE *fp;
4101
4102 snprintf(procname, sizeof(procname), "%s/%d/stat",
4103 getenv("PROC_ROOT") ? : "/proc", pid);
4104 if ((fp = fopen(procname, "r")) != NULL) {
4105 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
4106 snprintf(procname+strlen(procname),
4107 sizeof(procname)-strlen(procname),
4108 "/%d", pid);
4109 done = 1;
4110 }
4111 fclose(fp);
4112 }
4113 }
4114 if (!done)
4115 int_to_str(pid, procname);
4116 } else {
4117 int_to_str(pid, procname);
4118 }
4119
4120 sock_addr_print(prot_name, ":", procname, NULL);
4121
4122 if (state == NETLINK_CONNECTED) {
4123 char dst_group_buf[30];
4124 char dst_pid_buf[30];
4125
4126 sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
4127 int_to_str(dst_pid, dst_pid_buf), NULL);
4128 } else {
4129 sock_addr_print("", "*", "", NULL);
4130 }
4131
4132 char *pid_context = NULL;
4133
4134 if (show_proc_ctx) {
4135 /* The pid value will either be:
4136 * 0 if destination kernel - show kernel initial context.
4137 * A valid process pid - use getpidcon.
4138 * A unique value allocated by the kernel or netlink user
4139 * to the process - show context as "not available".
4140 */
4141 if (!pid)
4142 security_get_initial_context("kernel", &pid_context);
4143 else if (pid > 0)
4144 getpidcon(pid, &pid_context);
4145
4146 out(" proc_ctx=%s", pid_context ? : "unavailable");
4147 free(pid_context);
4148 }
4149
4150 if (show_details) {
4151 out(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
4152 }
4153
4154 return 0;
4155 }
4156
4157 static int netlink_show_sock(struct nlmsghdr *nlh, void *arg)
4158 {
4159 struct filter *f = (struct filter *)arg;
4160 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
4161 struct rtattr *tb[NETLINK_DIAG_MAX+1];
4162 int rq = 0, wq = 0;
4163 unsigned long groups = 0;
4164
4165 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
4166 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
4167
4168 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
4169 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
4170
4171 if (tb[NETLINK_DIAG_MEMINFO]) {
4172 const __u32 *skmeminfo;
4173
4174 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
4175
4176 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
4177 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
4178 }
4179
4180 if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
4181 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
4182 rq, wq, 0, 0)) {
4183 return 0;
4184 }
4185
4186 if (show_mem) {
4187 out("\t");
4188 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
4189 }
4190
4191 return 0;
4192 }
4193
4194 static int netlink_show_netlink(struct filter *f)
4195 {
4196 DIAG_REQUEST(req, struct netlink_diag_req r);
4197
4198 req.r.sdiag_family = AF_NETLINK;
4199 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
4200 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
4201
4202 return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
4203 }
4204
4205 static int netlink_show(struct filter *f)
4206 {
4207 FILE *fp;
4208 char buf[256];
4209 int prot, pid;
4210 unsigned int groups;
4211 int rq, wq, rc;
4212 unsigned long long sk, cb;
4213
4214 if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
4215 return 0;
4216
4217 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
4218 netlink_show_netlink(f) == 0)
4219 return 0;
4220
4221 if ((fp = net_netlink_open()) == NULL)
4222 return -1;
4223 if (!fgets(buf, sizeof(buf), fp)) {
4224 fclose(fp);
4225 return -1;
4226 }
4227
4228 while (fgets(buf, sizeof(buf), fp)) {
4229 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
4230 &sk,
4231 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
4232
4233 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
4234 }
4235
4236 fclose(fp);
4237 return 0;
4238 }
4239
4240 static bool vsock_type_skip(struct sockstat *s, struct filter *f)
4241 {
4242 if (s->type == SOCK_STREAM && !(f->dbs & (1 << VSOCK_ST_DB)))
4243 return true;
4244 if (s->type == SOCK_DGRAM && !(f->dbs & (1 << VSOCK_DG_DB)))
4245 return true;
4246 return false;
4247 }
4248
4249 static void vsock_addr_print(inet_prefix *a, __u32 port)
4250 {
4251 char cid_str[sizeof("4294967295")];
4252 char port_str[sizeof("4294967295")];
4253 __u32 cid;
4254
4255 memcpy(&cid, a->data, sizeof(cid));
4256
4257 if (cid == ~(__u32)0)
4258 snprintf(cid_str, sizeof(cid_str), "*");
4259 else
4260 snprintf(cid_str, sizeof(cid_str), "%u", cid);
4261
4262 if (port == ~(__u32)0)
4263 snprintf(port_str, sizeof(port_str), "*");
4264 else
4265 snprintf(port_str, sizeof(port_str), "%u", port);
4266
4267 sock_addr_print(cid_str, ":", port_str, NULL);
4268 }
4269
4270 static void vsock_stats_print(struct sockstat *s, struct filter *f)
4271 {
4272 sock_state_print(s);
4273
4274 vsock_addr_print(&s->local, s->lport);
4275 vsock_addr_print(&s->remote, s->rport);
4276
4277 proc_ctx_print(s);
4278 }
4279
4280 static int vsock_show_sock(struct nlmsghdr *nlh, void *arg)
4281 {
4282 struct filter *f = (struct filter *)arg;
4283 struct vsock_diag_msg *r = NLMSG_DATA(nlh);
4284 struct sockstat stat = {
4285 .type = r->vdiag_type,
4286 .lport = r->vdiag_src_port,
4287 .rport = r->vdiag_dst_port,
4288 .state = r->vdiag_state,
4289 .ino = r->vdiag_ino,
4290 };
4291
4292 vsock_set_inet_prefix(&stat.local, r->vdiag_src_cid);
4293 vsock_set_inet_prefix(&stat.remote, r->vdiag_dst_cid);
4294
4295 if (vsock_type_skip(&stat, f))
4296 return 0;
4297
4298 if (f->f && run_ssfilter(f->f, &stat) == 0)
4299 return 0;
4300
4301 vsock_stats_print(&stat, f);
4302
4303 return 0;
4304 }
4305
4306 static int vsock_show(struct filter *f)
4307 {
4308 DIAG_REQUEST(req, struct vsock_diag_req r);
4309
4310 if (!filter_af_get(f, AF_VSOCK))
4311 return 0;
4312
4313 req.r.sdiag_family = AF_VSOCK;
4314 req.r.vdiag_states = f->states;
4315
4316 return handle_netlink_request(f, &req.nlh, sizeof(req), vsock_show_sock);
4317 }
4318
4319 static void tipc_sock_addr_print(struct rtattr *net_addr, struct rtattr *id)
4320 {
4321 uint32_t node = rta_getattr_u32(net_addr);
4322 uint32_t identity = rta_getattr_u32(id);
4323
4324 SPRINT_BUF(addr) = {};
4325 SPRINT_BUF(port) = {};
4326
4327 sprintf(addr, "%u", node);
4328 sprintf(port, "%u", identity);
4329 sock_addr_print(addr, ":", port, NULL);
4330
4331 }
4332
4333 static int tipc_show_sock(struct nlmsghdr *nlh, void *arg)
4334 {
4335 struct rtattr *stat[TIPC_NLA_SOCK_STAT_MAX + 1] = {};
4336 struct rtattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {};
4337 struct rtattr *con[TIPC_NLA_CON_MAX + 1] = {};
4338 struct rtattr *info[TIPC_NLA_MAX + 1] = {};
4339 struct rtattr *msg_ref;
4340 struct sockstat ss = {};
4341
4342 parse_rtattr(info, TIPC_NLA_MAX, NLMSG_DATA(nlh),
4343 NLMSG_PAYLOAD(nlh, 0));
4344
4345 if (!info[TIPC_NLA_SOCK])
4346 return 0;
4347
4348 msg_ref = info[TIPC_NLA_SOCK];
4349 parse_rtattr(attrs, TIPC_NLA_SOCK_MAX, RTA_DATA(msg_ref),
4350 RTA_PAYLOAD(msg_ref));
4351
4352 msg_ref = attrs[TIPC_NLA_SOCK_STAT];
4353 parse_rtattr(stat, TIPC_NLA_SOCK_STAT_MAX,
4354 RTA_DATA(msg_ref), RTA_PAYLOAD(msg_ref));
4355
4356
4357 ss.local.family = AF_TIPC;
4358 ss.type = rta_getattr_u32(attrs[TIPC_NLA_SOCK_TYPE]);
4359 ss.state = rta_getattr_u32(attrs[TIPC_NLA_SOCK_TIPC_STATE]);
4360 ss.uid = rta_getattr_u32(attrs[TIPC_NLA_SOCK_UID]);
4361 ss.ino = rta_getattr_u32(attrs[TIPC_NLA_SOCK_INO]);
4362 ss.rq = rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_RCVQ]);
4363 ss.wq = rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_SENDQ]);
4364 ss.sk = rta_getattr_u64(attrs[TIPC_NLA_SOCK_COOKIE]);
4365
4366 sock_state_print (&ss);
4367
4368 tipc_sock_addr_print(attrs[TIPC_NLA_SOCK_ADDR],
4369 attrs[TIPC_NLA_SOCK_REF]);
4370
4371 msg_ref = attrs[TIPC_NLA_SOCK_CON];
4372 if (msg_ref) {
4373 parse_rtattr(con, TIPC_NLA_CON_MAX,
4374 RTA_DATA(msg_ref), RTA_PAYLOAD(msg_ref));
4375
4376 tipc_sock_addr_print(con[TIPC_NLA_CON_NODE],
4377 con[TIPC_NLA_CON_SOCK]);
4378 } else
4379 sock_addr_print("", "-", "", NULL);
4380
4381 if (show_details)
4382 sock_details_print(&ss);
4383
4384 proc_ctx_print(&ss);
4385
4386 if (show_tipcinfo) {
4387 out("\n type:%s", stype_nameg[ss.type]);
4388 out(" cong:%s ",
4389 stat[TIPC_NLA_SOCK_STAT_LINK_CONG] ? "link" :
4390 stat[TIPC_NLA_SOCK_STAT_CONN_CONG] ? "conn" : "none");
4391 out(" drop:%d ",
4392 rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_DROP]));
4393
4394 if (attrs[TIPC_NLA_SOCK_HAS_PUBL])
4395 out(" publ");
4396
4397 if (con[TIPC_NLA_CON_FLAG])
4398 out(" via {%u,%u} ",
4399 rta_getattr_u32(con[TIPC_NLA_CON_TYPE]),
4400 rta_getattr_u32(con[TIPC_NLA_CON_INST]));
4401 }
4402
4403 return 0;
4404 }
4405
4406 static int tipc_show(struct filter *f)
4407 {
4408 DIAG_REQUEST(req, struct tipc_sock_diag_req r);
4409
4410 memset(&req.r, 0, sizeof(req.r));
4411 req.r.sdiag_family = AF_TIPC;
4412 req.r.tidiag_states = f->states;
4413
4414 return handle_netlink_request(f, &req.nlh, sizeof(req), tipc_show_sock);
4415 }
4416
4417 struct sock_diag_msg {
4418 __u8 sdiag_family;
4419 };
4420
4421 static int generic_show_sock(struct nlmsghdr *nlh, void *arg)
4422 {
4423 struct sock_diag_msg *r = NLMSG_DATA(nlh);
4424 struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
4425 int ret;
4426
4427 switch (r->sdiag_family) {
4428 case AF_INET:
4429 case AF_INET6:
4430 inet_arg.rth = inet_arg.f->rth_for_killing;
4431 ret = show_one_inet_sock(nlh, &inet_arg);
4432 break;
4433 case AF_UNIX:
4434 ret = unix_show_sock(nlh, arg);
4435 break;
4436 case AF_PACKET:
4437 ret = packet_show_sock(nlh, arg);
4438 break;
4439 case AF_NETLINK:
4440 ret = netlink_show_sock(nlh, arg);
4441 break;
4442 case AF_VSOCK:
4443 ret = vsock_show_sock(nlh, arg);
4444 break;
4445 default:
4446 ret = -1;
4447 }
4448
4449 render();
4450
4451 return ret;
4452 }
4453
4454 static int handle_follow_request(struct filter *f)
4455 {
4456 int ret = 0;
4457 int groups = 0;
4458 struct rtnl_handle rth, rth2;
4459
4460 if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << TCP_DB))
4461 groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
4462 if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << UDP_DB))
4463 groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
4464 if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << TCP_DB))
4465 groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
4466 if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << UDP_DB))
4467 groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
4468
4469 if (groups == 0)
4470 return -1;
4471
4472 if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
4473 return -1;
4474
4475 rth.dump = 0;
4476 rth.local.nl_pid = 0;
4477
4478 if (f->kill) {
4479 if (rtnl_open_byproto(&rth2, groups, NETLINK_SOCK_DIAG)) {
4480 rtnl_close(&rth);
4481 return -1;
4482 }
4483 f->rth_for_killing = &rth2;
4484 }
4485
4486 if (rtnl_dump_filter(&rth, generic_show_sock, f))
4487 ret = -1;
4488
4489 rtnl_close(&rth);
4490 if (f->rth_for_killing)
4491 rtnl_close(f->rth_for_killing);
4492 return ret;
4493 }
4494
4495 static int get_snmp_int(char *proto, char *key, int *result)
4496 {
4497 char buf[1024];
4498 FILE *fp;
4499 int protolen = strlen(proto);
4500 int keylen = strlen(key);
4501
4502 *result = 0;
4503
4504 if ((fp = net_snmp_open()) == NULL)
4505 return -1;
4506
4507 while (fgets(buf, sizeof(buf), fp) != NULL) {
4508 char *p = buf;
4509 int pos = 0;
4510
4511 if (memcmp(buf, proto, protolen))
4512 continue;
4513 while ((p = strchr(p, ' ')) != NULL) {
4514 pos++;
4515 p++;
4516 if (memcmp(p, key, keylen) == 0 &&
4517 (p[keylen] == ' ' || p[keylen] == '\n'))
4518 break;
4519 }
4520 if (fgets(buf, sizeof(buf), fp) == NULL)
4521 break;
4522 if (memcmp(buf, proto, protolen))
4523 break;
4524 p = buf;
4525 while ((p = strchr(p, ' ')) != NULL) {
4526 p++;
4527 if (--pos == 0) {
4528 sscanf(p, "%d", result);
4529 fclose(fp);
4530 return 0;
4531 }
4532 }
4533 }
4534
4535 fclose(fp);
4536 errno = ESRCH;
4537 return -1;
4538 }
4539
4540
4541 /* Get stats from sockstat */
4542
4543 struct ssummary {
4544 int socks;
4545 int tcp_mem;
4546 int tcp_total;
4547 int tcp_orphans;
4548 int tcp_tws;
4549 int tcp4_hashed;
4550 int udp4;
4551 int raw4;
4552 int frag4;
4553 int frag4_mem;
4554 int tcp6_hashed;
4555 int udp6;
4556 int raw6;
4557 int frag6;
4558 int frag6_mem;
4559 };
4560
4561 static void get_sockstat_line(char *line, struct ssummary *s)
4562 {
4563 char id[256], rem[256];
4564
4565 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
4566 return;
4567
4568 if (strcmp(id, "sockets:") == 0)
4569 sscanf(rem, "%*s%d", &s->socks);
4570 else if (strcmp(id, "UDP:") == 0)
4571 sscanf(rem, "%*s%d", &s->udp4);
4572 else if (strcmp(id, "UDP6:") == 0)
4573 sscanf(rem, "%*s%d", &s->udp6);
4574 else if (strcmp(id, "RAW:") == 0)
4575 sscanf(rem, "%*s%d", &s->raw4);
4576 else if (strcmp(id, "RAW6:") == 0)
4577 sscanf(rem, "%*s%d", &s->raw6);
4578 else if (strcmp(id, "TCP6:") == 0)
4579 sscanf(rem, "%*s%d", &s->tcp6_hashed);
4580 else if (strcmp(id, "FRAG:") == 0)
4581 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
4582 else if (strcmp(id, "FRAG6:") == 0)
4583 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
4584 else if (strcmp(id, "TCP:") == 0)
4585 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
4586 &s->tcp4_hashed,
4587 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
4588 }
4589
4590 static int get_sockstat(struct ssummary *s)
4591 {
4592 char buf[256];
4593 FILE *fp;
4594
4595 memset(s, 0, sizeof(*s));
4596
4597 if ((fp = net_sockstat_open()) == NULL)
4598 return -1;
4599 while (fgets(buf, sizeof(buf), fp) != NULL)
4600 get_sockstat_line(buf, s);
4601 fclose(fp);
4602
4603 if ((fp = net_sockstat6_open()) == NULL)
4604 return 0;
4605 while (fgets(buf, sizeof(buf), fp) != NULL)
4606 get_sockstat_line(buf, s);
4607 fclose(fp);
4608
4609 return 0;
4610 }
4611
4612 static int print_summary(void)
4613 {
4614 struct ssummary s;
4615 int tcp_estab;
4616
4617 if (get_sockstat(&s) < 0)
4618 perror("ss: get_sockstat");
4619 if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0)
4620 perror("ss: get_snmpstat");
4621
4622 printf("Total: %d\n", s.socks);
4623
4624 printf("TCP: %d (estab %d, closed %d, orphaned %d, timewait %d)\n",
4625 s.tcp_total + s.tcp_tws, tcp_estab,
4626 s.tcp_total - (s.tcp4_hashed + s.tcp6_hashed - s.tcp_tws),
4627 s.tcp_orphans, s.tcp_tws);
4628
4629 printf("\n");
4630 printf("Transport Total IP IPv6\n");
4631 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
4632 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
4633 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
4634 printf("INET %-9d %-9d %-9d\n",
4635 s.raw4+s.udp4+s.tcp4_hashed+
4636 s.raw6+s.udp6+s.tcp6_hashed,
4637 s.raw4+s.udp4+s.tcp4_hashed,
4638 s.raw6+s.udp6+s.tcp6_hashed);
4639 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
4640
4641 printf("\n");
4642
4643 return 0;
4644 }
4645
4646 static void _usage(FILE *dest)
4647 {
4648 fprintf(dest,
4649 "Usage: ss [ OPTIONS ]\n"
4650 " ss [ OPTIONS ] [ FILTER ]\n"
4651 " -h, --help this message\n"
4652 " -V, --version output version information\n"
4653 " -n, --numeric don't resolve service names\n"
4654 " -r, --resolve resolve host names\n"
4655 " -a, --all display all sockets\n"
4656 " -l, --listening display listening sockets\n"
4657 " -o, --options show timer information\n"
4658 " -e, --extended show detailed socket information\n"
4659 " -m, --memory show socket memory usage\n"
4660 " -p, --processes show process using socket\n"
4661 " -i, --info show internal TCP information\n"
4662 " --tipcinfo show internal tipc socket information\n"
4663 " -s, --summary show socket usage summary\n"
4664 " -b, --bpf show bpf filter socket information\n"
4665 " -E, --events continually display sockets as they are destroyed\n"
4666 " -Z, --context display process SELinux security contexts\n"
4667 " -z, --contexts display process and socket SELinux security contexts\n"
4668 " -N, --net switch to the specified network namespace name\n"
4669 "\n"
4670 " -4, --ipv4 display only IP version 4 sockets\n"
4671 " -6, --ipv6 display only IP version 6 sockets\n"
4672 " -0, --packet display PACKET sockets\n"
4673 " -t, --tcp display only TCP sockets\n"
4674 " -S, --sctp display only SCTP sockets\n"
4675 " -u, --udp display only UDP sockets\n"
4676 " -d, --dccp display only DCCP sockets\n"
4677 " -w, --raw display only RAW sockets\n"
4678 " -x, --unix display only Unix domain sockets\n"
4679 " --tipc display only TIPC sockets\n"
4680 " --vsock display only vsock sockets\n"
4681 " -f, --family=FAMILY display sockets of type FAMILY\n"
4682 " FAMILY := {inet|inet6|link|unix|netlink|vsock|tipc|help}\n"
4683 "\n"
4684 " -K, --kill forcibly close sockets, display what was closed\n"
4685 " -H, --no-header Suppress header line\n"
4686 "\n"
4687 " -A, --query=QUERY, --socket=QUERY\n"
4688 " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink|vsock_stream|vsock_dgram|tipc}[,QUERY]\n"
4689 "\n"
4690 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
4691 " -F, --filter=FILE read filter information from FILE\n"
4692 " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
4693 " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
4694 " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n"
4695 " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
4696 " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
4697 " bucket := {syn-recv|time-wait}\n"
4698 " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n"
4699 );
4700 }
4701
4702 static void help(void) __attribute__((noreturn));
4703 static void help(void)
4704 {
4705 _usage(stdout);
4706 exit(0);
4707 }
4708
4709 static void usage(void) __attribute__((noreturn));
4710 static void usage(void)
4711 {
4712 _usage(stderr);
4713 exit(-1);
4714 }
4715
4716
4717 static int scan_state(const char *state)
4718 {
4719 static const char * const sstate_namel[] = {
4720 "UNKNOWN",
4721 [SS_ESTABLISHED] = "established",
4722 [SS_SYN_SENT] = "syn-sent",
4723 [SS_SYN_RECV] = "syn-recv",
4724 [SS_FIN_WAIT1] = "fin-wait-1",
4725 [SS_FIN_WAIT2] = "fin-wait-2",
4726 [SS_TIME_WAIT] = "time-wait",
4727 [SS_CLOSE] = "unconnected",
4728 [SS_CLOSE_WAIT] = "close-wait",
4729 [SS_LAST_ACK] = "last-ack",
4730 [SS_LISTEN] = "listening",
4731 [SS_CLOSING] = "closing",
4732 };
4733 int i;
4734
4735 if (strcasecmp(state, "close") == 0 ||
4736 strcasecmp(state, "closed") == 0)
4737 return (1<<SS_CLOSE);
4738 if (strcasecmp(state, "syn-rcv") == 0)
4739 return (1<<SS_SYN_RECV);
4740 if (strcasecmp(state, "established") == 0)
4741 return (1<<SS_ESTABLISHED);
4742 if (strcasecmp(state, "all") == 0)
4743 return SS_ALL;
4744 if (strcasecmp(state, "connected") == 0)
4745 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
4746 if (strcasecmp(state, "synchronized") == 0)
4747 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
4748 if (strcasecmp(state, "bucket") == 0)
4749 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
4750 if (strcasecmp(state, "big") == 0)
4751 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
4752 for (i = 0; i < SS_MAX; i++) {
4753 if (strcasecmp(state, sstate_namel[i]) == 0)
4754 return (1<<i);
4755 }
4756
4757 fprintf(stderr, "ss: wrong state name: %s\n", state);
4758 exit(-1);
4759 }
4760
4761 /* Values 'v' and 'V' are already used so a non-character is used */
4762 #define OPT_VSOCK 256
4763
4764 /* Values of 't' are already used so a non-character is used */
4765 #define OPT_TIPCSOCK 257
4766 #define OPT_TIPCINFO 258
4767
4768 static const struct option long_opts[] = {
4769 { "numeric", 0, 0, 'n' },
4770 { "resolve", 0, 0, 'r' },
4771 { "options", 0, 0, 'o' },
4772 { "extended", 0, 0, 'e' },
4773 { "memory", 0, 0, 'm' },
4774 { "info", 0, 0, 'i' },
4775 { "processes", 0, 0, 'p' },
4776 { "bpf", 0, 0, 'b' },
4777 { "events", 0, 0, 'E' },
4778 { "dccp", 0, 0, 'd' },
4779 { "tcp", 0, 0, 't' },
4780 { "sctp", 0, 0, 'S' },
4781 { "udp", 0, 0, 'u' },
4782 { "raw", 0, 0, 'w' },
4783 { "unix", 0, 0, 'x' },
4784 { "tipc", 0, 0, OPT_TIPCSOCK},
4785 { "vsock", 0, 0, OPT_VSOCK },
4786 { "all", 0, 0, 'a' },
4787 { "listening", 0, 0, 'l' },
4788 { "ipv4", 0, 0, '4' },
4789 { "ipv6", 0, 0, '6' },
4790 { "packet", 0, 0, '0' },
4791 { "family", 1, 0, 'f' },
4792 { "socket", 1, 0, 'A' },
4793 { "query", 1, 0, 'A' },
4794 { "summary", 0, 0, 's' },
4795 { "diag", 1, 0, 'D' },
4796 { "filter", 1, 0, 'F' },
4797 { "version", 0, 0, 'V' },
4798 { "help", 0, 0, 'h' },
4799 { "context", 0, 0, 'Z' },
4800 { "contexts", 0, 0, 'z' },
4801 { "net", 1, 0, 'N' },
4802 { "tipcinfo", 0, 0, OPT_TIPCINFO},
4803 { "kill", 0, 0, 'K' },
4804 { "no-header", 0, 0, 'H' },
4805 { 0 }
4806
4807 };
4808
4809 int main(int argc, char *argv[])
4810 {
4811 int saw_states = 0;
4812 int saw_query = 0;
4813 int do_summary = 0;
4814 const char *dump_tcpdiag = NULL;
4815 FILE *filter_fp = NULL;
4816 int ch;
4817 int state_filter = 0;
4818
4819 while ((ch = getopt_long(argc, argv,
4820 "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
4821 long_opts, NULL)) != EOF) {
4822 switch (ch) {
4823 case 'n':
4824 resolve_services = 0;
4825 break;
4826 case 'r':
4827 resolve_hosts = 1;
4828 break;
4829 case 'o':
4830 show_options = 1;
4831 break;
4832 case 'e':
4833 show_options = 1;
4834 show_details++;
4835 break;
4836 case 'm':
4837 show_mem = 1;
4838 break;
4839 case 'i':
4840 show_tcpinfo = 1;
4841 break;
4842 case 'p':
4843 show_users++;
4844 user_ent_hash_build();
4845 break;
4846 case 'b':
4847 show_options = 1;
4848 show_bpf++;
4849 break;
4850 case 'E':
4851 follow_events = 1;
4852 break;
4853 case 'd':
4854 filter_db_set(&current_filter, DCCP_DB, true);
4855 break;
4856 case 't':
4857 filter_db_set(&current_filter, TCP_DB, true);
4858 break;
4859 case 'S':
4860 filter_db_set(&current_filter, SCTP_DB, true);
4861 break;
4862 case 'u':
4863 filter_db_set(&current_filter, UDP_DB, true);
4864 break;
4865 case 'w':
4866 filter_db_set(&current_filter, RAW_DB, true);
4867 break;
4868 case 'x':
4869 filter_af_set(&current_filter, AF_UNIX);
4870 break;
4871 case OPT_VSOCK:
4872 filter_af_set(&current_filter, AF_VSOCK);
4873 break;
4874 case OPT_TIPCSOCK:
4875 filter_af_set(&current_filter, AF_TIPC);
4876 break;
4877 case 'a':
4878 state_filter = SS_ALL;
4879 break;
4880 case 'l':
4881 state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
4882 break;
4883 case '4':
4884 filter_af_set(&current_filter, AF_INET);
4885 break;
4886 case '6':
4887 filter_af_set(&current_filter, AF_INET6);
4888 break;
4889 case '0':
4890 filter_af_set(&current_filter, AF_PACKET);
4891 break;
4892 case 'f':
4893 if (strcmp(optarg, "inet") == 0)
4894 filter_af_set(&current_filter, AF_INET);
4895 else if (strcmp(optarg, "inet6") == 0)
4896 filter_af_set(&current_filter, AF_INET6);
4897 else if (strcmp(optarg, "link") == 0)
4898 filter_af_set(&current_filter, AF_PACKET);
4899 else if (strcmp(optarg, "unix") == 0)
4900 filter_af_set(&current_filter, AF_UNIX);
4901 else if (strcmp(optarg, "netlink") == 0)
4902 filter_af_set(&current_filter, AF_NETLINK);
4903 else if (strcmp(optarg, "tipc") == 0)
4904 filter_af_set(&current_filter, AF_TIPC);
4905 else if (strcmp(optarg, "vsock") == 0)
4906 filter_af_set(&current_filter, AF_VSOCK);
4907 else if (strcmp(optarg, "help") == 0)
4908 help();
4909 else {
4910 fprintf(stderr, "ss: \"%s\" is invalid family\n",
4911 optarg);
4912 usage();
4913 }
4914 break;
4915 case 'A':
4916 {
4917 char *p, *p1;
4918
4919 if (!saw_query) {
4920 current_filter.dbs = 0;
4921 state_filter = state_filter ?
4922 state_filter : SS_CONN;
4923 saw_query = 1;
4924 do_default = 0;
4925 }
4926 p = p1 = optarg;
4927 do {
4928 if ((p1 = strchr(p, ',')) != NULL)
4929 *p1 = 0;
4930 if (filter_db_parse(&current_filter, p)) {
4931 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
4932 usage();
4933 }
4934 p = p1 + 1;
4935 } while (p1);
4936 break;
4937 }
4938 case 's':
4939 do_summary = 1;
4940 break;
4941 case 'D':
4942 dump_tcpdiag = optarg;
4943 break;
4944 case 'F':
4945 if (filter_fp) {
4946 fprintf(stderr, "More than one filter file\n");
4947 exit(-1);
4948 }
4949 if (optarg[0] == '-')
4950 filter_fp = stdin;
4951 else
4952 filter_fp = fopen(optarg, "r");
4953 if (!filter_fp) {
4954 perror("fopen filter file");
4955 exit(-1);
4956 }
4957 break;
4958 case 'v':
4959 case 'V':
4960 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
4961 exit(0);
4962 case 'z':
4963 show_sock_ctx++;
4964 /* fall through */
4965 case 'Z':
4966 if (is_selinux_enabled() <= 0) {
4967 fprintf(stderr, "ss: SELinux is not enabled.\n");
4968 exit(1);
4969 }
4970 show_proc_ctx++;
4971 user_ent_hash_build();
4972 break;
4973 case 'N':
4974 if (netns_switch(optarg))
4975 exit(1);
4976 break;
4977 case OPT_TIPCINFO:
4978 show_tipcinfo = 1;
4979 break;
4980 case 'K':
4981 current_filter.kill = 1;
4982 break;
4983 case 'H':
4984 show_header = 0;
4985 break;
4986 case 'h':
4987 help();
4988 case '?':
4989 default:
4990 usage();
4991 }
4992 }
4993
4994 argc -= optind;
4995 argv += optind;
4996
4997 if (do_summary) {
4998 print_summary();
4999 if (do_default && argc == 0)
5000 exit(0);
5001 }
5002
5003 while (argc > 0) {
5004 if (strcmp(*argv, "state") == 0) {
5005 NEXT_ARG();
5006 if (!saw_states)
5007 state_filter = 0;
5008 state_filter |= scan_state(*argv);
5009 saw_states = 1;
5010 } else if (strcmp(*argv, "exclude") == 0 ||
5011 strcmp(*argv, "excl") == 0) {
5012 NEXT_ARG();
5013 if (!saw_states)
5014 state_filter = SS_ALL;
5015 state_filter &= ~scan_state(*argv);
5016 saw_states = 1;
5017 } else {
5018 break;
5019 }
5020 argc--; argv++;
5021 }
5022
5023 if (do_default) {
5024 state_filter = state_filter ? state_filter : SS_CONN;
5025 filter_db_parse(&current_filter, "all");
5026 }
5027
5028 filter_states_set(&current_filter, state_filter);
5029 filter_merge_defaults(&current_filter);
5030
5031 if (resolve_services && resolve_hosts &&
5032 (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
5033 init_service_resolver();
5034
5035 if (current_filter.dbs == 0) {
5036 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
5037 exit(0);
5038 }
5039 if (current_filter.families == 0) {
5040 fprintf(stderr, "ss: no families to show with such filter.\n");
5041 exit(0);
5042 }
5043 if (current_filter.states == 0) {
5044 fprintf(stderr, "ss: no socket states to show with such filter.\n");
5045 exit(0);
5046 }
5047
5048 if (dump_tcpdiag) {
5049 FILE *dump_fp = stdout;
5050
5051 if (!(current_filter.dbs & (1<<TCP_DB))) {
5052 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
5053 exit(0);
5054 }
5055 if (dump_tcpdiag[0] != '-') {
5056 dump_fp = fopen(dump_tcpdiag, "w");
5057 if (!dump_tcpdiag) {
5058 perror("fopen dump file");
5059 exit(-1);
5060 }
5061 }
5062 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
5063 fflush(dump_fp);
5064 exit(0);
5065 }
5066
5067 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
5068 usage();
5069
5070 if (!(current_filter.dbs & (current_filter.dbs - 1)))
5071 columns[COL_NETID].disabled = 1;
5072
5073 if (!(current_filter.states & (current_filter.states - 1)))
5074 columns[COL_STATE].disabled = 1;
5075
5076 if (show_header)
5077 print_header();
5078
5079 fflush(stdout);
5080
5081 if (follow_events)
5082 exit(handle_follow_request(&current_filter));
5083
5084 if (current_filter.dbs & (1<<NETLINK_DB))
5085 netlink_show(&current_filter);
5086 if (current_filter.dbs & PACKET_DBM)
5087 packet_show(&current_filter);
5088 if (current_filter.dbs & UNIX_DBM)
5089 unix_show(&current_filter);
5090 if (current_filter.dbs & (1<<RAW_DB))
5091 raw_show(&current_filter);
5092 if (current_filter.dbs & (1<<UDP_DB))
5093 udp_show(&current_filter);
5094 if (current_filter.dbs & (1<<TCP_DB))
5095 tcp_show(&current_filter);
5096 if (current_filter.dbs & (1<<DCCP_DB))
5097 dccp_show(&current_filter);
5098 if (current_filter.dbs & (1<<SCTP_DB))
5099 sctp_show(&current_filter);
5100 if (current_filter.dbs & VSOCK_DBM)
5101 vsock_show(&current_filter);
5102 if (current_filter.dbs & (1<<TIPC_DB))
5103 tipc_show(&current_filter);
5104
5105 if (show_users || show_proc_ctx || show_sock_ctx)
5106 user_ent_destroy();
5107
5108 render();
5109
5110 return 0;
5111 }
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