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1 | /* | |
2 | * ss.c "sockstat", socket statistics | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | */ | |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <unistd.h> | |
15 | #include <syslog.h> | |
16 | #include <fcntl.h> | |
17 | #include <sys/ioctl.h> | |
18 | #include <sys/socket.h> | |
19 | #include <sys/uio.h> | |
20 | #include <netinet/in.h> | |
21 | #include <string.h> | |
22 | #include <errno.h> | |
23 | #include <netdb.h> | |
24 | #include <arpa/inet.h> | |
25 | #include <resolv.h> | |
26 | #include <dirent.h> | |
27 | #include <fnmatch.h> | |
28 | #include <getopt.h> | |
29 | ||
30 | #include "utils.h" | |
31 | #include "rt_names.h" | |
32 | #include "ll_map.h" | |
33 | #include "libnetlink.h" | |
34 | #include "SNAPSHOT.h" | |
35 | ||
36 | #include <netinet/tcp.h> | |
37 | #include <linux/inet_diag.h> | |
38 | ||
39 | int resolve_hosts = 0; | |
40 | int resolve_services = 1; | |
41 | int preferred_family = AF_UNSPEC; | |
42 | int show_options = 0; | |
43 | int show_details = 0; | |
44 | int show_users = 0; | |
45 | int show_mem = 0; | |
46 | int show_tcpinfo = 0; | |
47 | ||
48 | int netid_width; | |
49 | int state_width; | |
50 | int addrp_width; | |
51 | int addr_width; | |
52 | int serv_width; | |
53 | int screen_width; | |
54 | ||
55 | static const char *TCP_PROTO = "tcp"; | |
56 | static const char *UDP_PROTO = "udp"; | |
57 | static const char *RAW_PROTO = "raw"; | |
58 | static const char *dg_proto = NULL; | |
59 | ||
60 | enum | |
61 | { | |
62 | TCP_DB, | |
63 | DCCP_DB, | |
64 | UDP_DB, | |
65 | RAW_DB, | |
66 | UNIX_DG_DB, | |
67 | UNIX_ST_DB, | |
68 | PACKET_DG_DB, | |
69 | PACKET_R_DB, | |
70 | NETLINK_DB, | |
71 | MAX_DB | |
72 | }; | |
73 | ||
74 | #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB)) | |
75 | #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)) | |
76 | #define ALL_DB ((1<<MAX_DB)-1) | |
77 | ||
78 | enum { | |
79 | SS_UNKNOWN, | |
80 | SS_ESTABLISHED, | |
81 | SS_SYN_SENT, | |
82 | SS_SYN_RECV, | |
83 | SS_FIN_WAIT1, | |
84 | SS_FIN_WAIT2, | |
85 | SS_TIME_WAIT, | |
86 | SS_CLOSE, | |
87 | SS_CLOSE_WAIT, | |
88 | SS_LAST_ACK, | |
89 | SS_LISTEN, | |
90 | SS_CLOSING, | |
91 | SS_MAX | |
92 | }; | |
93 | ||
94 | #define SS_ALL ((1<<SS_MAX)-1) | |
95 | ||
96 | #include "ssfilter.h" | |
97 | ||
98 | struct filter | |
99 | { | |
100 | int dbs; | |
101 | int states; | |
102 | int families; | |
103 | struct ssfilter *f; | |
104 | }; | |
105 | ||
106 | struct filter default_filter = { | |
107 | .dbs = (1<<TCP_DB), | |
108 | .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)), | |
109 | .families= (1<<AF_INET)|(1<<AF_INET6), | |
110 | }; | |
111 | ||
112 | struct filter current_filter; | |
113 | ||
114 | static FILE *generic_proc_open(const char *env, const char *name) | |
115 | { | |
116 | const char *p = getenv(env); | |
117 | char store[128]; | |
118 | ||
119 | if (!p) { | |
120 | p = getenv("PROC_ROOT") ? : "/proc"; | |
121 | snprintf(store, sizeof(store)-1, "%s/%s", p, name); | |
122 | p = store; | |
123 | } | |
124 | ||
125 | return fopen(p, "r"); | |
126 | } | |
127 | ||
128 | static FILE *net_tcp_open(void) | |
129 | { | |
130 | return generic_proc_open("PROC_NET_TCP", "net/tcp"); | |
131 | } | |
132 | ||
133 | static FILE *net_tcp6_open(void) | |
134 | { | |
135 | return generic_proc_open("PROC_NET_TCP6", "net/tcp6"); | |
136 | } | |
137 | ||
138 | static FILE *net_udp_open(void) | |
139 | { | |
140 | return generic_proc_open("PROC_NET_UDP", "net/udp"); | |
141 | } | |
142 | ||
143 | static FILE *net_udp6_open(void) | |
144 | { | |
145 | return generic_proc_open("PROC_NET_UDP6", "net/udp6"); | |
146 | } | |
147 | ||
148 | static FILE *net_raw_open(void) | |
149 | { | |
150 | return generic_proc_open("PROC_NET_RAW", "net/raw"); | |
151 | } | |
152 | ||
153 | static FILE *net_raw6_open(void) | |
154 | { | |
155 | return generic_proc_open("PROC_NET_RAW6", "net/raw6"); | |
156 | } | |
157 | ||
158 | static FILE *net_unix_open(void) | |
159 | { | |
160 | return generic_proc_open("PROC_NET_UNIX", "net/unix"); | |
161 | } | |
162 | ||
163 | static FILE *net_packet_open(void) | |
164 | { | |
165 | return generic_proc_open("PROC_NET_PACKET", "net/packet"); | |
166 | } | |
167 | ||
168 | static FILE *net_netlink_open(void) | |
169 | { | |
170 | return generic_proc_open("PROC_NET_NETLINK", "net/netlink"); | |
171 | } | |
172 | ||
173 | static FILE *slabinfo_open(void) | |
174 | { | |
175 | return generic_proc_open("PROC_SLABINFO", "slabinfo"); | |
176 | } | |
177 | ||
178 | static FILE *net_sockstat_open(void) | |
179 | { | |
180 | return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat"); | |
181 | } | |
182 | ||
183 | static FILE *net_sockstat6_open(void) | |
184 | { | |
185 | return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6"); | |
186 | } | |
187 | ||
188 | static FILE *net_snmp_open(void) | |
189 | { | |
190 | return generic_proc_open("PROC_NET_SNMP", "net/snmp"); | |
191 | } | |
192 | ||
193 | static FILE *ephemeral_ports_open(void) | |
194 | { | |
195 | return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range"); | |
196 | } | |
197 | ||
198 | struct user_ent { | |
199 | struct user_ent *next; | |
200 | unsigned int ino; | |
201 | int pid; | |
202 | int fd; | |
203 | char process[0]; | |
204 | }; | |
205 | ||
206 | #define USER_ENT_HASH_SIZE 256 | |
207 | struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE]; | |
208 | ||
209 | static int user_ent_hashfn(unsigned int ino) | |
210 | { | |
211 | int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino; | |
212 | ||
213 | return val & (USER_ENT_HASH_SIZE - 1); | |
214 | } | |
215 | ||
216 | static void user_ent_add(unsigned int ino, const char *process, int pid, int fd) | |
217 | { | |
218 | struct user_ent *p, **pp; | |
219 | int str_len; | |
220 | ||
221 | str_len = strlen(process) + 1; | |
222 | p = malloc(sizeof(struct user_ent) + str_len); | |
223 | if (!p) | |
224 | abort(); | |
225 | p->next = NULL; | |
226 | p->ino = ino; | |
227 | p->pid = pid; | |
228 | p->fd = fd; | |
229 | strcpy(p->process, process); | |
230 | ||
231 | pp = &user_ent_hash[user_ent_hashfn(ino)]; | |
232 | p->next = *pp; | |
233 | *pp = p; | |
234 | } | |
235 | ||
236 | static void user_ent_hash_build(void) | |
237 | { | |
238 | const char *root = getenv("PROC_ROOT") ? : "/proc/"; | |
239 | struct dirent *d; | |
240 | char name[1024]; | |
241 | int nameoff; | |
242 | DIR *dir; | |
243 | ||
244 | strcpy(name, root); | |
245 | if (strlen(name) == 0 || name[strlen(name)-1] != '/') | |
246 | strcat(name, "/"); | |
247 | ||
248 | nameoff = strlen(name); | |
249 | ||
250 | dir = opendir(name); | |
251 | if (!dir) | |
252 | return; | |
253 | ||
254 | while ((d = readdir(dir)) != NULL) { | |
255 | struct dirent *d1; | |
256 | char process[16]; | |
257 | int pid, pos; | |
258 | DIR *dir1; | |
259 | char crap; | |
260 | ||
261 | if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1) | |
262 | continue; | |
263 | ||
264 | sprintf(name + nameoff, "%d/fd/", pid); | |
265 | pos = strlen(name); | |
266 | if ((dir1 = opendir(name)) == NULL) | |
267 | continue; | |
268 | ||
269 | process[0] = '\0'; | |
270 | ||
271 | while ((d1 = readdir(dir1)) != NULL) { | |
272 | const char *pattern = "socket:["; | |
273 | unsigned int ino; | |
274 | char lnk[64]; | |
275 | int fd; | |
276 | ||
277 | if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1) | |
278 | continue; | |
279 | ||
280 | sprintf(name+pos, "%d", fd); | |
281 | if (readlink(name, lnk, sizeof(lnk)-1) < 0 || | |
282 | strncmp(lnk, pattern, strlen(pattern))) | |
283 | continue; | |
284 | ||
285 | sscanf(lnk, "socket:[%u]", &ino); | |
286 | ||
287 | if (process[0] == '\0') { | |
288 | char tmp[1024]; | |
289 | FILE *fp; | |
290 | ||
291 | snprintf(tmp, sizeof(tmp), "%s/%d/stat", root, pid); | |
292 | if ((fp = fopen(tmp, "r")) != NULL) { | |
293 | fscanf(fp, "%*d (%[^)])", process); | |
294 | fclose(fp); | |
295 | } | |
296 | } | |
297 | ||
298 | user_ent_add(ino, process, pid, fd); | |
299 | } | |
300 | closedir(dir1); | |
301 | } | |
302 | closedir(dir); | |
303 | } | |
304 | ||
305 | int find_users(unsigned ino, char *buf, int buflen) | |
306 | { | |
307 | struct user_ent *p; | |
308 | int cnt = 0; | |
309 | char *ptr; | |
310 | ||
311 | if (!ino) | |
312 | return 0; | |
313 | ||
314 | p = user_ent_hash[user_ent_hashfn(ino)]; | |
315 | ptr = buf; | |
316 | while (p) { | |
317 | if (p->ino != ino) | |
318 | goto next; | |
319 | ||
320 | if (ptr - buf >= buflen - 1) | |
321 | break; | |
322 | ||
323 | snprintf(ptr, buflen - (ptr - buf), | |
324 | "(\"%s\",%d,%d),", | |
325 | p->process, p->pid, p->fd); | |
326 | ptr += strlen(ptr); | |
327 | cnt++; | |
328 | ||
329 | next: | |
330 | p = p->next; | |
331 | } | |
332 | ||
333 | if (ptr != buf) | |
334 | ptr[-1] = '\0'; | |
335 | ||
336 | return cnt; | |
337 | } | |
338 | ||
339 | /* Get stats from slab */ | |
340 | ||
341 | struct slabstat | |
342 | { | |
343 | int socks; | |
344 | int tcp_ports; | |
345 | int tcp_tws; | |
346 | int tcp_syns; | |
347 | int skbs; | |
348 | }; | |
349 | ||
350 | struct slabstat slabstat; | |
351 | ||
352 | static const char *slabstat_ids[] = | |
353 | { | |
354 | "sock", | |
355 | "tcp_bind_bucket", | |
356 | "tcp_tw_bucket", | |
357 | "tcp_open_request", | |
358 | "skbuff_head_cache", | |
359 | }; | |
360 | ||
361 | int get_slabstat(struct slabstat *s) | |
362 | { | |
363 | char buf[256]; | |
364 | FILE *fp; | |
365 | int cnt; | |
366 | ||
367 | memset(s, 0, sizeof(*s)); | |
368 | ||
369 | fp = slabinfo_open(); | |
370 | if (!fp) | |
371 | return -1; | |
372 | ||
373 | cnt = sizeof(*s)/sizeof(int); | |
374 | ||
375 | fgets(buf, sizeof(buf), fp); | |
376 | while(fgets(buf, sizeof(buf), fp) != NULL) { | |
377 | int i; | |
378 | for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) { | |
379 | if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) { | |
380 | sscanf(buf, "%*s%d", ((int *)s) + i); | |
381 | cnt--; | |
382 | break; | |
383 | } | |
384 | } | |
385 | if (cnt <= 0) | |
386 | break; | |
387 | } | |
388 | ||
389 | fclose(fp); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static const char *sstate_name[] = { | |
394 | "UNKNOWN", | |
395 | [TCP_ESTABLISHED] = "ESTAB", | |
396 | [TCP_SYN_SENT] = "SYN-SENT", | |
397 | [TCP_SYN_RECV] = "SYN-RECV", | |
398 | [TCP_FIN_WAIT1] = "FIN-WAIT-1", | |
399 | [TCP_FIN_WAIT2] = "FIN-WAIT-2", | |
400 | [TCP_TIME_WAIT] = "TIME-WAIT", | |
401 | [TCP_CLOSE] = "UNCONN", | |
402 | [TCP_CLOSE_WAIT] = "CLOSE-WAIT", | |
403 | [TCP_LAST_ACK] = "LAST-ACK", | |
404 | [TCP_LISTEN] = "LISTEN", | |
405 | [TCP_CLOSING] = "CLOSING", | |
406 | }; | |
407 | ||
408 | static const char *sstate_namel[] = { | |
409 | "UNKNOWN", | |
410 | [TCP_ESTABLISHED] = "established", | |
411 | [TCP_SYN_SENT] = "syn-sent", | |
412 | [TCP_SYN_RECV] = "syn-recv", | |
413 | [TCP_FIN_WAIT1] = "fin-wait-1", | |
414 | [TCP_FIN_WAIT2] = "fin-wait-2", | |
415 | [TCP_TIME_WAIT] = "time-wait", | |
416 | [TCP_CLOSE] = "unconnected", | |
417 | [TCP_CLOSE_WAIT] = "close-wait", | |
418 | [TCP_LAST_ACK] = "last-ack", | |
419 | [TCP_LISTEN] = "listening", | |
420 | [TCP_CLOSING] = "closing", | |
421 | }; | |
422 | ||
423 | struct tcpstat | |
424 | { | |
425 | inet_prefix local; | |
426 | inet_prefix remote; | |
427 | int lport; | |
428 | int rport; | |
429 | int state; | |
430 | int rq, wq; | |
431 | int timer; | |
432 | int timeout; | |
433 | int retrs; | |
434 | unsigned ino; | |
435 | int probes; | |
436 | unsigned uid; | |
437 | int refcnt; | |
438 | unsigned long long sk; | |
439 | int rto, ato, qack, cwnd, ssthresh; | |
440 | }; | |
441 | ||
442 | static const char *tmr_name[] = { | |
443 | "off", | |
444 | "on", | |
445 | "keepalive", | |
446 | "timewait", | |
447 | "persist", | |
448 | "unknown" | |
449 | }; | |
450 | ||
451 | const char *print_ms_timer(int timeout) | |
452 | { | |
453 | static char buf[64]; | |
454 | int secs, msecs, minutes; | |
455 | if (timeout < 0) | |
456 | timeout = 0; | |
457 | secs = timeout/1000; | |
458 | minutes = secs/60; | |
459 | secs = secs%60; | |
460 | msecs = timeout%1000; | |
461 | buf[0] = 0; | |
462 | if (minutes) { | |
463 | msecs = 0; | |
464 | snprintf(buf, sizeof(buf)-16, "%dmin", minutes); | |
465 | if (minutes > 9) | |
466 | secs = 0; | |
467 | } | |
468 | if (secs) { | |
469 | if (secs > 9) | |
470 | msecs = 0; | |
471 | sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec"); | |
472 | } | |
473 | if (msecs) | |
474 | sprintf(buf+strlen(buf), "%03dms", msecs); | |
475 | return buf; | |
476 | } | |
477 | ||
478 | const char *print_hz_timer(int timeout) | |
479 | { | |
480 | int hz = get_user_hz(); | |
481 | return print_ms_timer(((timeout*1000) + hz-1)/hz); | |
482 | } | |
483 | ||
484 | struct scache | |
485 | { | |
486 | struct scache *next; | |
487 | int port; | |
488 | char *name; | |
489 | const char *proto; | |
490 | }; | |
491 | ||
492 | struct scache *rlist; | |
493 | ||
494 | void init_service_resolver(void) | |
495 | { | |
496 | char buf[128]; | |
497 | FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r"); | |
498 | if (fp) { | |
499 | fgets(buf, sizeof(buf), fp); | |
500 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
501 | unsigned int progn, port; | |
502 | char proto[128], prog[128]; | |
503 | if (sscanf(buf, "%u %*d %s %u %s", &progn, proto, | |
504 | &port, prog+4) == 4) { | |
505 | struct scache *c = malloc(sizeof(*c)); | |
506 | if (c) { | |
507 | c->port = port; | |
508 | memcpy(prog, "rpc.", 4); | |
509 | c->name = strdup(prog); | |
510 | if (strcmp(proto, TCP_PROTO) == 0) | |
511 | c->proto = TCP_PROTO; | |
512 | else if (strcmp(proto, UDP_PROTO) == 0) | |
513 | c->proto = UDP_PROTO; | |
514 | else | |
515 | c->proto = NULL; | |
516 | c->next = rlist; | |
517 | rlist = c; | |
518 | } | |
519 | } | |
520 | } | |
521 | } | |
522 | } | |
523 | ||
524 | static int ip_local_port_min, ip_local_port_max; | |
525 | ||
526 | /* Even do not try default linux ephemeral port ranges: | |
527 | * default /etc/services contains so much of useless crap | |
528 | * wouldbe "allocated" to this area that resolution | |
529 | * is really harmful. I shrug each time when seeing | |
530 | * "socks" or "cfinger" in dumps. | |
531 | */ | |
532 | static int is_ephemeral(int port) | |
533 | { | |
534 | if (!ip_local_port_min) { | |
535 | FILE *f = ephemeral_ports_open(); | |
536 | if (f) { | |
537 | fscanf(f, "%d %d", | |
538 | &ip_local_port_min, &ip_local_port_max); | |
539 | fclose(f); | |
540 | } else { | |
541 | ip_local_port_min = 1024; | |
542 | ip_local_port_max = 4999; | |
543 | } | |
544 | } | |
545 | ||
546 | return (port >= ip_local_port_min && port<= ip_local_port_max); | |
547 | } | |
548 | ||
549 | ||
550 | const char *__resolve_service(int port) | |
551 | { | |
552 | struct scache *c; | |
553 | ||
554 | for (c = rlist; c; c = c->next) { | |
555 | if (c->port == port && c->proto == dg_proto) | |
556 | return c->name; | |
557 | } | |
558 | ||
559 | if (!is_ephemeral(port)) { | |
560 | static int notfirst; | |
561 | struct servent *se; | |
562 | if (!notfirst) { | |
563 | setservent(1); | |
564 | notfirst = 1; | |
565 | } | |
566 | se = getservbyport(htons(port), dg_proto); | |
567 | if (se) | |
568 | return se->s_name; | |
569 | } | |
570 | ||
571 | return NULL; | |
572 | } | |
573 | ||
574 | ||
575 | const char *resolve_service(int port) | |
576 | { | |
577 | static char buf[128]; | |
578 | static struct scache cache[256]; | |
579 | ||
580 | if (port == 0) { | |
581 | buf[0] = '*'; | |
582 | buf[1] = 0; | |
583 | return buf; | |
584 | } | |
585 | ||
586 | if (resolve_services) { | |
587 | if (dg_proto == RAW_PROTO) { | |
588 | return inet_proto_n2a(port, buf, sizeof(buf)); | |
589 | } else { | |
590 | struct scache *c; | |
591 | const char *res; | |
592 | int hash = (port^(((unsigned long)dg_proto)>>2))&255; | |
593 | ||
594 | for (c = &cache[hash]; c; c = c->next) { | |
595 | if (c->port == port && | |
596 | c->proto == dg_proto) { | |
597 | if (c->name) | |
598 | return c->name; | |
599 | goto do_numeric; | |
600 | } | |
601 | } | |
602 | ||
603 | if ((res = __resolve_service(port)) != NULL) { | |
604 | if ((c = malloc(sizeof(*c))) == NULL) | |
605 | goto do_numeric; | |
606 | } else { | |
607 | c = &cache[hash]; | |
608 | if (c->name) | |
609 | free(c->name); | |
610 | } | |
611 | c->port = port; | |
612 | c->name = NULL; | |
613 | c->proto = dg_proto; | |
614 | if (res) { | |
615 | c->name = strdup(res); | |
616 | c->next = cache[hash].next; | |
617 | cache[hash].next = c; | |
618 | } | |
619 | if (c->name) | |
620 | return c->name; | |
621 | } | |
622 | } | |
623 | ||
624 | do_numeric: | |
625 | sprintf(buf, "%u", port); | |
626 | return buf; | |
627 | } | |
628 | ||
629 | void formatted_print(const inet_prefix *a, int port) | |
630 | { | |
631 | char buf[1024]; | |
632 | const char *ap = buf; | |
633 | int est_len; | |
634 | ||
635 | est_len = addr_width; | |
636 | ||
637 | if (a->family == AF_INET) { | |
638 | if (a->data[0] == 0) { | |
639 | buf[0] = '*'; | |
640 | buf[1] = 0; | |
641 | } else { | |
642 | ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf)); | |
643 | } | |
644 | } else { | |
645 | ap = format_host(a->family, 16, a->data, buf, sizeof(buf)); | |
646 | est_len = strlen(ap); | |
647 | if (est_len <= addr_width) | |
648 | est_len = addr_width; | |
649 | else | |
650 | est_len = addr_width + ((est_len-addr_width+3)/4)*4; | |
651 | } | |
652 | printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port)); | |
653 | } | |
654 | ||
655 | struct aafilter | |
656 | { | |
657 | inet_prefix addr; | |
658 | int port; | |
659 | struct aafilter *next; | |
660 | }; | |
661 | ||
662 | int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, int plen) | |
663 | { | |
664 | if (!inet_addr_match(a, p, plen)) | |
665 | return 0; | |
666 | ||
667 | /* Cursed "v4 mapped" addresses: v4 mapped socket matches | |
668 | * pure IPv4 rule, but v4-mapped rule selects only v4-mapped | |
669 | * sockets. Fair? */ | |
670 | if (p->family == AF_INET && a->family == AF_INET6) { | |
671 | if (a->data[0] == 0 && a->data[1] == 0 && | |
672 | a->data[2] == htonl(0xffff)) { | |
673 | inet_prefix tmp = *a; | |
674 | tmp.data[0] = a->data[3]; | |
675 | return inet_addr_match(&tmp, p, plen); | |
676 | } | |
677 | } | |
678 | return 1; | |
679 | } | |
680 | ||
681 | int unix_match(const inet_prefix *a, const inet_prefix *p) | |
682 | { | |
683 | char *addr, *pattern; | |
684 | memcpy(&addr, a->data, sizeof(addr)); | |
685 | memcpy(&pattern, p->data, sizeof(pattern)); | |
686 | if (pattern == NULL) | |
687 | return 1; | |
688 | if (addr == NULL) | |
689 | addr = ""; | |
690 | return !fnmatch(pattern, addr, 0); | |
691 | } | |
692 | ||
693 | int run_ssfilter(struct ssfilter *f, struct tcpstat *s) | |
694 | { | |
695 | switch (f->type) { | |
696 | case SSF_S_AUTO: | |
697 | { | |
698 | static int low, high=65535; | |
699 | ||
700 | if (s->local.family == AF_UNIX) { | |
701 | char *p; | |
702 | memcpy(&p, s->local.data, sizeof(p)); | |
703 | return p == NULL || (p[0] == '@' && strlen(p) == 6 && | |
704 | strspn(p+1, "0123456789abcdef") == 5); | |
705 | } | |
706 | if (s->local.family == AF_PACKET) | |
707 | return s->lport == 0 && s->local.data == 0; | |
708 | if (s->local.family == AF_NETLINK) | |
709 | return s->lport < 0; | |
710 | ||
711 | if (!low) { | |
712 | FILE *fp = ephemeral_ports_open(); | |
713 | if (fp) { | |
714 | fscanf(fp, "%d%d", &low, &high); | |
715 | fclose(fp); | |
716 | } | |
717 | } | |
718 | return s->lport >= low && s->lport <= high; | |
719 | } | |
720 | case SSF_DCOND: | |
721 | { | |
722 | struct aafilter *a = (void*)f->pred; | |
723 | if (a->addr.family == AF_UNIX) | |
724 | return unix_match(&s->remote, &a->addr); | |
725 | if (a->port != -1 && a->port != s->rport) | |
726 | return 0; | |
727 | if (a->addr.bitlen) { | |
728 | do { | |
729 | if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen)) | |
730 | return 1; | |
731 | } while ((a = a->next) != NULL); | |
732 | return 0; | |
733 | } | |
734 | return 1; | |
735 | } | |
736 | case SSF_SCOND: | |
737 | { | |
738 | struct aafilter *a = (void*)f->pred; | |
739 | if (a->addr.family == AF_UNIX) | |
740 | return unix_match(&s->local, &a->addr); | |
741 | if (a->port != -1 && a->port != s->lport) | |
742 | return 0; | |
743 | if (a->addr.bitlen) { | |
744 | do { | |
745 | if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen)) | |
746 | return 1; | |
747 | } while ((a = a->next) != NULL); | |
748 | return 0; | |
749 | } | |
750 | return 1; | |
751 | } | |
752 | case SSF_D_GE: | |
753 | { | |
754 | struct aafilter *a = (void*)f->pred; | |
755 | return s->rport >= a->port; | |
756 | } | |
757 | case SSF_D_LE: | |
758 | { | |
759 | struct aafilter *a = (void*)f->pred; | |
760 | return s->rport <= a->port; | |
761 | } | |
762 | case SSF_S_GE: | |
763 | { | |
764 | struct aafilter *a = (void*)f->pred; | |
765 | return s->lport >= a->port; | |
766 | } | |
767 | case SSF_S_LE: | |
768 | { | |
769 | struct aafilter *a = (void*)f->pred; | |
770 | return s->lport <= a->port; | |
771 | } | |
772 | ||
773 | /* Yup. It is recursion. Sorry. */ | |
774 | case SSF_AND: | |
775 | return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s); | |
776 | case SSF_OR: | |
777 | return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s); | |
778 | case SSF_NOT: | |
779 | return !run_ssfilter(f->pred, s); | |
780 | default: | |
781 | abort(); | |
782 | } | |
783 | } | |
784 | ||
785 | /* Relocate external jumps by reloc. */ | |
786 | static void ssfilter_patch(char *a, int len, int reloc) | |
787 | { | |
788 | while (len > 0) { | |
789 | struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a; | |
790 | if (op->no == len+4) | |
791 | op->no += reloc; | |
792 | len -= op->yes; | |
793 | a += op->yes; | |
794 | } | |
795 | if (len < 0) | |
796 | abort(); | |
797 | } | |
798 | ||
799 | static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode) | |
800 | { | |
801 | switch (f->type) { | |
802 | case SSF_S_AUTO: | |
803 | { | |
804 | if (!(*bytecode=malloc(4))) abort(); | |
805 | ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 }; | |
806 | return 4; | |
807 | } | |
808 | case SSF_DCOND: | |
809 | case SSF_SCOND: | |
810 | { | |
811 | struct aafilter *a = (void*)f->pred; | |
812 | struct aafilter *b; | |
813 | char *ptr; | |
814 | int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND); | |
815 | int len = 0; | |
816 | ||
817 | for (b=a; b; b=b->next) { | |
818 | len += 4 + sizeof(struct inet_diag_hostcond); | |
819 | if (a->addr.family == AF_INET6) | |
820 | len += 16; | |
821 | else | |
822 | len += 4; | |
823 | if (b->next) | |
824 | len += 4; | |
825 | } | |
826 | if (!(ptr = malloc(len))) abort(); | |
827 | *bytecode = ptr; | |
828 | for (b=a; b; b=b->next) { | |
829 | struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr; | |
830 | int alen = (a->addr.family == AF_INET6 ? 16 : 4); | |
831 | int oplen = alen + 4 + sizeof(struct inet_diag_hostcond); | |
832 | struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4); | |
833 | ||
834 | *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 }; | |
835 | cond->family = a->addr.family; | |
836 | cond->port = a->port; | |
837 | cond->prefix_len = a->addr.bitlen; | |
838 | memcpy(cond->addr, a->addr.data, alen); | |
839 | ptr += oplen; | |
840 | if (b->next) { | |
841 | op = (struct inet_diag_bc_op *)ptr; | |
842 | *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)}; | |
843 | ptr += 4; | |
844 | } | |
845 | } | |
846 | return ptr - *bytecode; | |
847 | } | |
848 | case SSF_D_GE: | |
849 | { | |
850 | struct aafilter *x = (void*)f->pred; | |
851 | if (!(*bytecode=malloc(8))) abort(); | |
852 | ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 }; | |
853 | ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; | |
854 | return 8; | |
855 | } | |
856 | case SSF_D_LE: | |
857 | { | |
858 | struct aafilter *x = (void*)f->pred; | |
859 | if (!(*bytecode=malloc(8))) abort(); | |
860 | ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 }; | |
861 | ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; | |
862 | return 8; | |
863 | } | |
864 | case SSF_S_GE: | |
865 | { | |
866 | struct aafilter *x = (void*)f->pred; | |
867 | if (!(*bytecode=malloc(8))) abort(); | |
868 | ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 }; | |
869 | ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; | |
870 | return 8; | |
871 | } | |
872 | case SSF_S_LE: | |
873 | { | |
874 | struct aafilter *x = (void*)f->pred; | |
875 | if (!(*bytecode=malloc(8))) abort(); | |
876 | ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 }; | |
877 | ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port }; | |
878 | return 8; | |
879 | } | |
880 | ||
881 | case SSF_AND: | |
882 | { | |
883 | char *a1, *a2, *a, l1, l2; | |
884 | l1 = ssfilter_bytecompile(f->pred, &a1); | |
885 | l2 = ssfilter_bytecompile(f->post, &a2); | |
886 | if (!(a = malloc(l1+l2))) abort(); | |
887 | memcpy(a, a1, l1); | |
888 | memcpy(a+l1, a2, l2); | |
889 | free(a1); free(a2); | |
890 | ssfilter_patch(a, l1, l2); | |
891 | *bytecode = a; | |
892 | return l1+l2; | |
893 | } | |
894 | case SSF_OR: | |
895 | { | |
896 | char *a1, *a2, *a, l1, l2; | |
897 | l1 = ssfilter_bytecompile(f->pred, &a1); | |
898 | l2 = ssfilter_bytecompile(f->post, &a2); | |
899 | if (!(a = malloc(l1+l2+4))) abort(); | |
900 | memcpy(a, a1, l1); | |
901 | memcpy(a+l1+4, a2, l2); | |
902 | free(a1); free(a2); | |
903 | *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 }; | |
904 | *bytecode = a; | |
905 | return l1+l2+4; | |
906 | } | |
907 | case SSF_NOT: | |
908 | { | |
909 | char *a1, *a, l1; | |
910 | l1 = ssfilter_bytecompile(f->pred, &a1); | |
911 | if (!(a = malloc(l1+4))) abort(); | |
912 | memcpy(a, a1, l1); | |
913 | free(a1); | |
914 | *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 }; | |
915 | *bytecode = a; | |
916 | return l1+4; | |
917 | } | |
918 | default: | |
919 | abort(); | |
920 | } | |
921 | } | |
922 | ||
923 | static int remember_he(struct aafilter *a, struct hostent *he) | |
924 | { | |
925 | char **ptr = he->h_addr_list; | |
926 | int cnt = 0; | |
927 | int len; | |
928 | ||
929 | if (he->h_addrtype == AF_INET) | |
930 | len = 4; | |
931 | else if (he->h_addrtype == AF_INET6) | |
932 | len = 16; | |
933 | else | |
934 | return 0; | |
935 | ||
936 | while (*ptr) { | |
937 | struct aafilter *b = a; | |
938 | if (a->addr.bitlen) { | |
939 | if ((b = malloc(sizeof(*b))) == NULL) | |
940 | return cnt; | |
941 | *b = *a; | |
942 | b->next = a->next; | |
943 | a->next = b; | |
944 | } | |
945 | memcpy(b->addr.data, *ptr, len); | |
946 | b->addr.bytelen = len; | |
947 | b->addr.bitlen = len*8; | |
948 | b->addr.family = he->h_addrtype; | |
949 | ptr++; | |
950 | cnt++; | |
951 | } | |
952 | return cnt; | |
953 | } | |
954 | ||
955 | static int get_dns_host(struct aafilter *a, const char *addr, int fam) | |
956 | { | |
957 | static int notfirst; | |
958 | int cnt = 0; | |
959 | struct hostent *he; | |
960 | ||
961 | a->addr.bitlen = 0; | |
962 | if (!notfirst) { | |
963 | sethostent(1); | |
964 | notfirst = 1; | |
965 | } | |
966 | he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam); | |
967 | if (he) | |
968 | cnt = remember_he(a, he); | |
969 | if (fam == AF_UNSPEC) { | |
970 | he = gethostbyname2(addr, AF_INET6); | |
971 | if (he) | |
972 | cnt += remember_he(a, he); | |
973 | } | |
974 | return !cnt; | |
975 | } | |
976 | ||
977 | static int xll_initted = 0; | |
978 | ||
979 | static void xll_init(void) | |
980 | { | |
981 | struct rtnl_handle rth; | |
982 | rtnl_open(&rth, 0); | |
983 | ll_init_map(&rth); | |
984 | rtnl_close(&rth); | |
985 | xll_initted = 1; | |
986 | } | |
987 | ||
988 | static const char *xll_index_to_name(int index) | |
989 | { | |
990 | if (!xll_initted) | |
991 | xll_init(); | |
992 | return ll_index_to_name(index); | |
993 | } | |
994 | ||
995 | static int xll_name_to_index(const char *dev) | |
996 | { | |
997 | if (!xll_initted) | |
998 | xll_init(); | |
999 | return ll_name_to_index(dev); | |
1000 | } | |
1001 | ||
1002 | void *parse_hostcond(char *addr) | |
1003 | { | |
1004 | char *port = NULL; | |
1005 | struct aafilter a; | |
1006 | struct aafilter *res; | |
1007 | int fam = preferred_family; | |
1008 | ||
1009 | memset(&a, 0, sizeof(a)); | |
1010 | a.port = -1; | |
1011 | ||
1012 | if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) { | |
1013 | char *p; | |
1014 | a.addr.family = AF_UNIX; | |
1015 | if (strncmp(addr, "unix:", 5) == 0) | |
1016 | addr+=5; | |
1017 | p = strdup(addr); | |
1018 | a.addr.bitlen = 8*strlen(p); | |
1019 | memcpy(a.addr.data, &p, sizeof(p)); | |
1020 | goto out; | |
1021 | } | |
1022 | ||
1023 | if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) { | |
1024 | a.addr.family = AF_PACKET; | |
1025 | a.addr.bitlen = 0; | |
1026 | if (strncmp(addr, "link:", 5) == 0) | |
1027 | addr+=5; | |
1028 | port = strchr(addr, ':'); | |
1029 | if (port) { | |
1030 | *port = 0; | |
1031 | if (port[1] && strcmp(port+1, "*")) { | |
1032 | if (get_integer(&a.port, port+1, 0)) { | |
1033 | if ((a.port = xll_name_to_index(port+1)) <= 0) | |
1034 | return NULL; | |
1035 | } | |
1036 | } | |
1037 | } | |
1038 | if (addr[0] && strcmp(addr, "*")) { | |
1039 | unsigned short tmp; | |
1040 | a.addr.bitlen = 32; | |
1041 | if (ll_proto_a2n(&tmp, addr)) | |
1042 | return NULL; | |
1043 | a.addr.data[0] = ntohs(tmp); | |
1044 | } | |
1045 | goto out; | |
1046 | } | |
1047 | ||
1048 | if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) { | |
1049 | a.addr.family = AF_NETLINK; | |
1050 | a.addr.bitlen = 0; | |
1051 | if (strncmp(addr, "netlink:", 8) == 0) | |
1052 | addr+=8; | |
1053 | port = strchr(addr, ':'); | |
1054 | if (port) { | |
1055 | *port = 0; | |
1056 | if (port[1] && strcmp(port+1, "*")) { | |
1057 | if (get_integer(&a.port, port+1, 0)) { | |
1058 | if (strcmp(port+1, "kernel") == 0) | |
1059 | a.port = 0; | |
1060 | else | |
1061 | return NULL; | |
1062 | } | |
1063 | } | |
1064 | } | |
1065 | if (addr[0] && strcmp(addr, "*")) { | |
1066 | a.addr.bitlen = 32; | |
1067 | if (get_u32(a.addr.data, addr, 0)) { | |
1068 | if (strcmp(addr, "rtnl") == 0) | |
1069 | a.addr.data[0] = 0; | |
1070 | else if (strcmp(addr, "fw") == 0) | |
1071 | a.addr.data[0] = 3; | |
1072 | else if (strcmp(addr, "tcpdiag") == 0) | |
1073 | a.addr.data[0] = 4; | |
1074 | else | |
1075 | return NULL; | |
1076 | } | |
1077 | } | |
1078 | goto out; | |
1079 | } | |
1080 | ||
1081 | if (strncmp(addr, "inet:", 5) == 0) { | |
1082 | addr += 5; | |
1083 | fam = AF_INET; | |
1084 | } else if (strncmp(addr, "inet6:", 6) == 0) { | |
1085 | addr += 6; | |
1086 | fam = AF_INET6; | |
1087 | } | |
1088 | ||
1089 | /* URL-like literal [] */ | |
1090 | if (addr[0] == '[') { | |
1091 | addr++; | |
1092 | if ((port = strchr(addr, ']')) == NULL) | |
1093 | return NULL; | |
1094 | *port++ = 0; | |
1095 | } else if (addr[0] == '*') { | |
1096 | port = addr+1; | |
1097 | } else { | |
1098 | port = strrchr(strchr(addr, '/') ? : addr, ':'); | |
1099 | } | |
1100 | if (port && *port) { | |
1101 | if (*port != ':') | |
1102 | return NULL; | |
1103 | *port++ = 0; | |
1104 | if (*port && *port != '*') { | |
1105 | if (get_integer(&a.port, port, 0)) { | |
1106 | struct servent *se1 = NULL; | |
1107 | struct servent *se2 = NULL; | |
1108 | if (current_filter.dbs&(1<<UDP_DB)) | |
1109 | se1 = getservbyname(port, UDP_PROTO); | |
1110 | if (current_filter.dbs&(1<<TCP_DB)) | |
1111 | se2 = getservbyname(port, TCP_PROTO); | |
1112 | if (se1 && se2 && se1->s_port != se2->s_port) { | |
1113 | fprintf(stderr, "Error: ambiguous port \"%s\".\n", port); | |
1114 | return NULL; | |
1115 | } | |
1116 | if (!se1) | |
1117 | se1 = se2; | |
1118 | if (se1) { | |
1119 | a.port = ntohs(se1->s_port); | |
1120 | } else { | |
1121 | struct scache *s; | |
1122 | for (s = rlist; s; s = s->next) { | |
1123 | if ((s->proto == UDP_PROTO && | |
1124 | (current_filter.dbs&(1<<UDP_DB))) || | |
1125 | (s->proto == TCP_PROTO && | |
1126 | (current_filter.dbs&(1<<TCP_DB)))) { | |
1127 | if (s->name && strcmp(s->name, port) == 0) { | |
1128 | if (a.port > 0 && a.port != s->port) { | |
1129 | fprintf(stderr, "Error: ambiguous port \"%s\".\n", port); | |
1130 | return NULL; | |
1131 | } | |
1132 | a.port = s->port; | |
1133 | } | |
1134 | } | |
1135 | } | |
1136 | if (a.port <= 0) { | |
1137 | fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port); | |
1138 | return NULL; | |
1139 | } | |
1140 | } | |
1141 | } | |
1142 | } | |
1143 | } | |
1144 | if (addr && *addr && *addr != '*') { | |
1145 | if (get_prefix_1(&a.addr, addr, fam)) { | |
1146 | if (get_dns_host(&a, addr, fam)) { | |
1147 | fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr); | |
1148 | return NULL; | |
1149 | } | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | out: | |
1154 | res = malloc(sizeof(*res)); | |
1155 | if (res) | |
1156 | memcpy(res, &a, sizeof(a)); | |
1157 | return res; | |
1158 | } | |
1159 | ||
1160 | static int tcp_show_line(char *line, const struct filter *f, int family) | |
1161 | { | |
1162 | struct tcpstat s; | |
1163 | char *loc, *rem, *data; | |
1164 | char opt[256]; | |
1165 | int n; | |
1166 | char *p; | |
1167 | ||
1168 | if ((p = strchr(line, ':')) == NULL) | |
1169 | return -1; | |
1170 | loc = p+2; | |
1171 | ||
1172 | if ((p = strchr(loc, ':')) == NULL) | |
1173 | return -1; | |
1174 | p[5] = 0; | |
1175 | rem = p+6; | |
1176 | ||
1177 | if ((p = strchr(rem, ':')) == NULL) | |
1178 | return -1; | |
1179 | p[5] = 0; | |
1180 | data = p+6; | |
1181 | ||
1182 | do { | |
1183 | int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0'); | |
1184 | ||
1185 | if (!(f->states & (1<<state))) | |
1186 | return 0; | |
1187 | } while (0); | |
1188 | ||
1189 | s.local.family = s.remote.family = family; | |
1190 | if (family == AF_INET) { | |
1191 | sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport); | |
1192 | sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport); | |
1193 | s.local.bytelen = s.remote.bytelen = 4; | |
1194 | } else { | |
1195 | sscanf(loc, "%08x%08x%08x%08x:%x", | |
1196 | s.local.data, | |
1197 | s.local.data+1, | |
1198 | s.local.data+2, | |
1199 | s.local.data+3, | |
1200 | &s.lport); | |
1201 | sscanf(rem, "%08x%08x%08x%08x:%x", | |
1202 | s.remote.data, | |
1203 | s.remote.data+1, | |
1204 | s.remote.data+2, | |
1205 | s.remote.data+3, | |
1206 | &s.rport); | |
1207 | s.local.bytelen = s.remote.bytelen = 16; | |
1208 | } | |
1209 | ||
1210 | if (f->f && run_ssfilter(f->f, &s) == 0) | |
1211 | return 0; | |
1212 | ||
1213 | opt[0] = 0; | |
1214 | n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n", | |
1215 | &s.state, &s.wq, &s.rq, | |
1216 | &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino, | |
1217 | &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack, | |
1218 | &s.cwnd, &s.ssthresh, opt); | |
1219 | ||
1220 | if (n < 17) | |
1221 | opt[0] = 0; | |
1222 | ||
1223 | if (n < 12) { | |
1224 | s.rto = 0; | |
1225 | s.cwnd = 2; | |
1226 | s.ssthresh = -1; | |
1227 | s.ato = s.qack = 0; | |
1228 | } | |
1229 | ||
1230 | if (netid_width) | |
1231 | printf("%-*s ", netid_width, "tcp"); | |
1232 | if (state_width) | |
1233 | printf("%-*s ", state_width, sstate_name[s.state]); | |
1234 | ||
1235 | printf("%-6d %-6d ", s.rq, s.wq); | |
1236 | ||
1237 | formatted_print(&s.local, s.lport); | |
1238 | formatted_print(&s.remote, s.rport); | |
1239 | ||
1240 | if (show_options) { | |
1241 | if (s.timer) { | |
1242 | if (s.timer > 4) | |
1243 | s.timer = 5; | |
1244 | printf(" timer:(%s,%s,%d)", | |
1245 | tmr_name[s.timer], | |
1246 | print_hz_timer(s.timeout), | |
1247 | s.timer != 1 ? s.probes : s.retrs); | |
1248 | } | |
1249 | } | |
1250 | if (show_tcpinfo) { | |
1251 | int hz = get_user_hz(); | |
1252 | if (s.rto && s.rto != 3*hz) | |
1253 | printf(" rto:%g", (double)s.rto/hz); | |
1254 | if (s.ato) | |
1255 | printf(" ato:%g", (double)s.ato/hz); | |
1256 | if (s.cwnd != 2) | |
1257 | printf(" cwnd:%d", s.cwnd); | |
1258 | if (s.ssthresh != -1) | |
1259 | printf(" ssthresh:%d", s.ssthresh); | |
1260 | if (s.qack/2) | |
1261 | printf(" qack:%d", s.qack/2); | |
1262 | if (s.qack&1) | |
1263 | printf(" bidir"); | |
1264 | } | |
1265 | if (show_users) { | |
1266 | char ubuf[4096]; | |
1267 | if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0) | |
1268 | printf(" users:(%s)", ubuf); | |
1269 | } | |
1270 | if (show_details) { | |
1271 | if (s.uid) | |
1272 | printf(" uid:%u", (unsigned)s.uid); | |
1273 | printf(" ino:%u", s.ino); | |
1274 | printf(" sk:%llx", s.sk); | |
1275 | if (opt[0]) | |
1276 | printf(" opt:\"%s\"", opt); | |
1277 | } | |
1278 | printf("\n"); | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | static int generic_record_read(FILE *fp, | |
1284 | int (*worker)(char*, const struct filter *, int), | |
1285 | const struct filter *f, int fam) | |
1286 | { | |
1287 | char line[256]; | |
1288 | ||
1289 | /* skip header */ | |
1290 | if (fgets(line, sizeof(line), fp) == NULL) | |
1291 | goto outerr; | |
1292 | ||
1293 | while (fgets(line, sizeof(line), fp) != NULL) { | |
1294 | int n = strlen(line); | |
1295 | if (n == 0 || line[n-1] != '\n') { | |
1296 | errno = -EINVAL; | |
1297 | return -1; | |
1298 | } | |
1299 | line[n-1] = 0; | |
1300 | ||
1301 | if (worker(line, f, fam) < 0) | |
1302 | return 0; | |
1303 | } | |
1304 | outerr: | |
1305 | ||
1306 | return ferror(fp) ? -1 : 0; | |
1307 | } | |
1308 | ||
1309 | static char *sprint_bw(char *buf, double bw) | |
1310 | { | |
1311 | if (bw > 1000000.) | |
1312 | sprintf(buf,"%.1fM", bw / 1000000.); | |
1313 | else if (bw > 1000.) | |
1314 | sprintf(buf,"%.1fK", bw / 1000.); | |
1315 | else | |
1316 | sprintf(buf, "%g", bw); | |
1317 | ||
1318 | return buf; | |
1319 | } | |
1320 | ||
1321 | static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r) | |
1322 | { | |
1323 | struct rtattr * tb[INET_DIAG_MAX+1]; | |
1324 | char b1[64]; | |
1325 | double rtt = 0; | |
1326 | ||
1327 | parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1), | |
1328 | nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); | |
1329 | ||
1330 | if (tb[INET_DIAG_MEMINFO]) { | |
1331 | const struct inet_diag_meminfo *minfo | |
1332 | = RTA_DATA(tb[INET_DIAG_MEMINFO]); | |
1333 | printf(" mem:(r%u,w%u,f%u,t%u)", | |
1334 | minfo->idiag_rmem, | |
1335 | minfo->idiag_wmem, | |
1336 | minfo->idiag_fmem, | |
1337 | minfo->idiag_tmem); | |
1338 | } | |
1339 | ||
1340 | if (tb[INET_DIAG_INFO]) { | |
1341 | struct tcp_info *info; | |
1342 | int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]); | |
1343 | ||
1344 | /* workaround for older kernels with less fields */ | |
1345 | if (len < sizeof(*info)) { | |
1346 | info = alloca(sizeof(*info)); | |
1347 | memset(info, 0, sizeof(*info)); | |
1348 | memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len); | |
1349 | } else | |
1350 | info = RTA_DATA(tb[INET_DIAG_INFO]); | |
1351 | ||
1352 | if (show_options) { | |
1353 | if (info->tcpi_options & TCPI_OPT_TIMESTAMPS) | |
1354 | printf(" ts"); | |
1355 | if (info->tcpi_options & TCPI_OPT_SACK) | |
1356 | printf(" sack"); | |
1357 | if (info->tcpi_options & TCPI_OPT_ECN) | |
1358 | printf(" ecn"); | |
1359 | } | |
1360 | ||
1361 | if (tb[INET_DIAG_CONG]) | |
1362 | printf(" %s", (char *) RTA_DATA(tb[INET_DIAG_CONG])); | |
1363 | ||
1364 | if (info->tcpi_options & TCPI_OPT_WSCALE) | |
1365 | printf(" wscale:%d,%d", info->tcpi_snd_wscale, | |
1366 | info->tcpi_rcv_wscale); | |
1367 | if (info->tcpi_rto && info->tcpi_rto != 3000000) | |
1368 | printf(" rto:%g", (double)info->tcpi_rto/1000); | |
1369 | if (info->tcpi_rtt) | |
1370 | printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000, | |
1371 | (double)info->tcpi_rttvar/1000); | |
1372 | if (info->tcpi_ato) | |
1373 | printf(" ato:%g", (double)info->tcpi_ato/1000); | |
1374 | if (info->tcpi_snd_cwnd != 2) | |
1375 | printf(" cwnd:%d", info->tcpi_snd_cwnd); | |
1376 | if (info->tcpi_snd_ssthresh < 0xFFFF) | |
1377 | printf(" ssthresh:%d", info->tcpi_snd_ssthresh); | |
1378 | ||
1379 | rtt = (double) info->tcpi_rtt; | |
1380 | if (tb[INET_DIAG_VEGASINFO]) { | |
1381 | const struct tcpvegas_info *vinfo | |
1382 | = RTA_DATA(tb[INET_DIAG_VEGASINFO]); | |
1383 | ||
1384 | if (vinfo->tcpv_enabled && | |
1385 | vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff) | |
1386 | rtt = vinfo->tcpv_rtt; | |
1387 | } | |
1388 | ||
1389 | if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) { | |
1390 | printf(" send %sbps", | |
1391 | sprint_bw(b1, (double) info->tcpi_snd_cwnd * | |
1392 | (double) info->tcpi_snd_mss * 8000000. | |
1393 | / rtt)); | |
1394 | } | |
1395 | ||
1396 | if (info->tcpi_rcv_rtt) | |
1397 | printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000); | |
1398 | if (info->tcpi_rcv_space) | |
1399 | printf(" rcv_space:%d", info->tcpi_rcv_space); | |
1400 | ||
1401 | } | |
1402 | } | |
1403 | ||
1404 | static int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f) | |
1405 | { | |
1406 | struct inet_diag_msg *r = NLMSG_DATA(nlh); | |
1407 | struct tcpstat s; | |
1408 | ||
1409 | s.state = r->idiag_state; | |
1410 | s.local.family = s.remote.family = r->idiag_family; | |
1411 | s.lport = ntohs(r->id.idiag_sport); | |
1412 | s.rport = ntohs(r->id.idiag_dport); | |
1413 | if (s.local.family == AF_INET) { | |
1414 | s.local.bytelen = s.remote.bytelen = 4; | |
1415 | } else { | |
1416 | s.local.bytelen = s.remote.bytelen = 16; | |
1417 | } | |
1418 | memcpy(s.local.data, r->id.idiag_src, s.local.bytelen); | |
1419 | memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen); | |
1420 | ||
1421 | if (f && f->f && run_ssfilter(f->f, &s) == 0) | |
1422 | return 0; | |
1423 | ||
1424 | if (netid_width) | |
1425 | printf("%-*s ", netid_width, "tcp"); | |
1426 | if (state_width) | |
1427 | printf("%-*s ", state_width, sstate_name[s.state]); | |
1428 | ||
1429 | printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue); | |
1430 | ||
1431 | formatted_print(&s.local, s.lport); | |
1432 | formatted_print(&s.remote, s.rport); | |
1433 | ||
1434 | if (show_options) { | |
1435 | if (r->idiag_timer) { | |
1436 | if (r->idiag_timer > 4) | |
1437 | r->idiag_timer = 5; | |
1438 | printf(" timer:(%s,%s,%d)", | |
1439 | tmr_name[r->idiag_timer], | |
1440 | print_ms_timer(r->idiag_expires), | |
1441 | r->idiag_retrans); | |
1442 | } | |
1443 | } | |
1444 | if (show_users) { | |
1445 | char ubuf[4096]; | |
1446 | if (find_users(r->idiag_inode, ubuf, sizeof(ubuf)) > 0) | |
1447 | printf(" users:(%s)", ubuf); | |
1448 | } | |
1449 | if (show_details) { | |
1450 | if (r->idiag_uid) | |
1451 | printf(" uid:%u", (unsigned)r->idiag_uid); | |
1452 | printf(" ino:%u", r->idiag_inode); | |
1453 | printf(" sk:"); | |
1454 | if (r->id.idiag_cookie[1] != 0) | |
1455 | printf("%08x", r->id.idiag_cookie[1]); | |
1456 | printf("%08x", r->id.idiag_cookie[0]); | |
1457 | } | |
1458 | if (show_mem || show_tcpinfo) { | |
1459 | printf("\n\t"); | |
1460 | tcp_show_info(nlh, r); | |
1461 | } | |
1462 | ||
1463 | printf("\n"); | |
1464 | ||
1465 | return 0; | |
1466 | } | |
1467 | ||
1468 | static int tcp_show_netlink(struct filter *f, FILE *dump_fp, int socktype) | |
1469 | { | |
1470 | int fd; | |
1471 | struct sockaddr_nl nladdr; | |
1472 | struct { | |
1473 | struct nlmsghdr nlh; | |
1474 | struct inet_diag_req r; | |
1475 | } req; | |
1476 | char *bc = NULL; | |
1477 | int bclen; | |
1478 | struct msghdr msg; | |
1479 | struct rtattr rta; | |
1480 | char buf[8192]; | |
1481 | struct iovec iov[3]; | |
1482 | ||
1483 | if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0) | |
1484 | return -1; | |
1485 | ||
1486 | memset(&nladdr, 0, sizeof(nladdr)); | |
1487 | nladdr.nl_family = AF_NETLINK; | |
1488 | ||
1489 | req.nlh.nlmsg_len = sizeof(req); | |
1490 | req.nlh.nlmsg_type = socktype; | |
1491 | req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST; | |
1492 | req.nlh.nlmsg_pid = 0; | |
1493 | req.nlh.nlmsg_seq = 123456; | |
1494 | memset(&req.r, 0, sizeof(req.r)); | |
1495 | req.r.idiag_family = AF_INET; | |
1496 | req.r.idiag_states = f->states; | |
1497 | if (show_mem) | |
1498 | req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1)); | |
1499 | ||
1500 | if (show_tcpinfo) { | |
1501 | req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1)); | |
1502 | req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1)); | |
1503 | req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1)); | |
1504 | } | |
1505 | ||
1506 | iov[0] = (struct iovec){ | |
1507 | .iov_base = &req, | |
1508 | .iov_len = sizeof(req) | |
1509 | }; | |
1510 | if (f->f) { | |
1511 | bclen = ssfilter_bytecompile(f->f, &bc); | |
1512 | rta.rta_type = INET_DIAG_REQ_BYTECODE; | |
1513 | rta.rta_len = RTA_LENGTH(bclen); | |
1514 | iov[1] = (struct iovec){ &rta, sizeof(rta) }; | |
1515 | iov[2] = (struct iovec){ bc, bclen }; | |
1516 | req.nlh.nlmsg_len += RTA_LENGTH(bclen); | |
1517 | } | |
1518 | ||
1519 | msg = (struct msghdr) { | |
1520 | .msg_name = (void*)&nladdr, | |
1521 | .msg_namelen = sizeof(nladdr), | |
1522 | .msg_iov = iov, | |
1523 | .msg_iovlen = f->f ? 3 : 1, | |
1524 | }; | |
1525 | ||
1526 | if (sendmsg(fd, &msg, 0) < 0) | |
1527 | return -1; | |
1528 | ||
1529 | iov[0] = (struct iovec){ | |
1530 | .iov_base = buf, | |
1531 | .iov_len = sizeof(buf) | |
1532 | }; | |
1533 | ||
1534 | while (1) { | |
1535 | int status; | |
1536 | struct nlmsghdr *h; | |
1537 | ||
1538 | msg = (struct msghdr) { | |
1539 | (void*)&nladdr, sizeof(nladdr), | |
1540 | iov, 1, | |
1541 | NULL, 0, | |
1542 | 0 | |
1543 | }; | |
1544 | ||
1545 | status = recvmsg(fd, &msg, 0); | |
1546 | ||
1547 | if (status < 0) { | |
1548 | if (errno == EINTR) | |
1549 | continue; | |
1550 | perror("OVERRUN"); | |
1551 | continue; | |
1552 | } | |
1553 | if (status == 0) { | |
1554 | fprintf(stderr, "EOF on netlink\n"); | |
1555 | return 0; | |
1556 | } | |
1557 | ||
1558 | if (dump_fp) | |
1559 | fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp); | |
1560 | ||
1561 | h = (struct nlmsghdr*)buf; | |
1562 | while (NLMSG_OK(h, status)) { | |
1563 | int err; | |
1564 | struct inet_diag_msg *r = NLMSG_DATA(h); | |
1565 | ||
1566 | if (/*h->nlmsg_pid != rth->local.nl_pid ||*/ | |
1567 | h->nlmsg_seq != 123456) | |
1568 | goto skip_it; | |
1569 | ||
1570 | if (h->nlmsg_type == NLMSG_DONE) | |
1571 | return 0; | |
1572 | if (h->nlmsg_type == NLMSG_ERROR) { | |
1573 | struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h); | |
1574 | if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) { | |
1575 | fprintf(stderr, "ERROR truncated\n"); | |
1576 | } else { | |
1577 | errno = -err->error; | |
1578 | perror("TCPDIAG answers"); | |
1579 | } | |
1580 | return 0; | |
1581 | } | |
1582 | if (!dump_fp) { | |
1583 | if (!(f->families & (1<<r->idiag_family))) { | |
1584 | h = NLMSG_NEXT(h, status); | |
1585 | continue; | |
1586 | } | |
1587 | err = tcp_show_sock(h, NULL); | |
1588 | if (err < 0) | |
1589 | return err; | |
1590 | } | |
1591 | ||
1592 | skip_it: | |
1593 | h = NLMSG_NEXT(h, status); | |
1594 | } | |
1595 | if (msg.msg_flags & MSG_TRUNC) { | |
1596 | fprintf(stderr, "Message truncated\n"); | |
1597 | continue; | |
1598 | } | |
1599 | if (status) { | |
1600 | fprintf(stderr, "!!!Remnant of size %d\n", status); | |
1601 | exit(1); | |
1602 | } | |
1603 | } | |
1604 | return 0; | |
1605 | } | |
1606 | ||
1607 | static int tcp_show_netlink_file(struct filter *f) | |
1608 | { | |
1609 | FILE *fp; | |
1610 | char buf[8192]; | |
1611 | ||
1612 | if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) { | |
1613 | perror("fopen($TCPDIAG_FILE)"); | |
1614 | return -1; | |
1615 | } | |
1616 | ||
1617 | while (1) { | |
1618 | int status, err; | |
1619 | struct nlmsghdr *h = (struct nlmsghdr*)buf; | |
1620 | ||
1621 | status = fread(buf, 1, sizeof(*h), fp); | |
1622 | if (status < 0) { | |
1623 | perror("Reading header from $TCPDIAG_FILE"); | |
1624 | return -1; | |
1625 | } | |
1626 | if (status != sizeof(*h)) { | |
1627 | perror("Unexpected EOF reading $TCPDIAG_FILE"); | |
1628 | return -1; | |
1629 | } | |
1630 | ||
1631 | status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp); | |
1632 | ||
1633 | if (status < 0) { | |
1634 | perror("Reading $TCPDIAG_FILE"); | |
1635 | return -1; | |
1636 | } | |
1637 | if (status + sizeof(*h) < h->nlmsg_len) { | |
1638 | perror("Unexpected EOF reading $TCPDIAG_FILE"); | |
1639 | return -1; | |
1640 | } | |
1641 | ||
1642 | /* The only legal exit point */ | |
1643 | if (h->nlmsg_type == NLMSG_DONE) | |
1644 | return 0; | |
1645 | ||
1646 | if (h->nlmsg_type == NLMSG_ERROR) { | |
1647 | struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h); | |
1648 | if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) { | |
1649 | fprintf(stderr, "ERROR truncated\n"); | |
1650 | } else { | |
1651 | errno = -err->error; | |
1652 | perror("TCPDIAG answered"); | |
1653 | } | |
1654 | return -1; | |
1655 | } | |
1656 | ||
1657 | err = tcp_show_sock(h, f); | |
1658 | if (err < 0) | |
1659 | return err; | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | static int tcp_show(struct filter *f, int socktype) | |
1664 | { | |
1665 | FILE *fp = NULL; | |
1666 | char *buf = NULL; | |
1667 | int bufsize = 64*1024; | |
1668 | ||
1669 | dg_proto = TCP_PROTO; | |
1670 | ||
1671 | if (getenv("TCPDIAG_FILE")) | |
1672 | return tcp_show_netlink_file(f); | |
1673 | ||
1674 | if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT") | |
1675 | && tcp_show_netlink(f, NULL, socktype) == 0) | |
1676 | return 0; | |
1677 | ||
1678 | /* Sigh... We have to parse /proc/net/tcp... */ | |
1679 | ||
1680 | ||
1681 | /* Estimate amount of sockets and try to allocate | |
1682 | * huge buffer to read all the table at one read. | |
1683 | * Limit it by 16MB though. The assumption is: as soon as | |
1684 | * kernel was able to hold information about N connections, | |
1685 | * it is able to give us some memory for snapshot. | |
1686 | */ | |
1687 | if (1) { | |
1688 | int guess = slabstat.socks+slabstat.tcp_syns; | |
1689 | if (f->states&(1<<SS_TIME_WAIT)) | |
1690 | guess += slabstat.tcp_tws; | |
1691 | if (guess > (16*1024*1024)/128) | |
1692 | guess = (16*1024*1024)/128; | |
1693 | guess *= 128; | |
1694 | if (guess > bufsize) | |
1695 | bufsize = guess; | |
1696 | } | |
1697 | while (bufsize >= 64*1024) { | |
1698 | if ((buf = malloc(bufsize)) != NULL) | |
1699 | break; | |
1700 | bufsize /= 2; | |
1701 | } | |
1702 | if (buf == NULL) { | |
1703 | errno = ENOMEM; | |
1704 | return -1; | |
1705 | } | |
1706 | ||
1707 | if (f->families & (1<<AF_INET)) { | |
1708 | if ((fp = net_tcp_open()) == NULL) | |
1709 | goto outerr; | |
1710 | ||
1711 | setbuffer(fp, buf, bufsize); | |
1712 | if (generic_record_read(fp, tcp_show_line, f, AF_INET)) | |
1713 | goto outerr; | |
1714 | fclose(fp); | |
1715 | } | |
1716 | ||
1717 | if ((f->families & (1<<AF_INET6)) && | |
1718 | (fp = net_tcp6_open()) != NULL) { | |
1719 | setbuffer(fp, buf, bufsize); | |
1720 | if (generic_record_read(fp, tcp_show_line, f, AF_INET6)) | |
1721 | goto outerr; | |
1722 | fclose(fp); | |
1723 | } | |
1724 | ||
1725 | free(buf); | |
1726 | return 0; | |
1727 | ||
1728 | outerr: | |
1729 | do { | |
1730 | int saved_errno = errno; | |
1731 | if (buf) | |
1732 | free(buf); | |
1733 | if (fp) | |
1734 | fclose(fp); | |
1735 | errno = saved_errno; | |
1736 | return -1; | |
1737 | } while (0); | |
1738 | } | |
1739 | ||
1740 | ||
1741 | int dgram_show_line(char *line, const struct filter *f, int family) | |
1742 | { | |
1743 | struct tcpstat s; | |
1744 | char *loc, *rem, *data; | |
1745 | char opt[256]; | |
1746 | int n; | |
1747 | char *p; | |
1748 | ||
1749 | if ((p = strchr(line, ':')) == NULL) | |
1750 | return -1; | |
1751 | loc = p+2; | |
1752 | ||
1753 | if ((p = strchr(loc, ':')) == NULL) | |
1754 | return -1; | |
1755 | p[5] = 0; | |
1756 | rem = p+6; | |
1757 | ||
1758 | if ((p = strchr(rem, ':')) == NULL) | |
1759 | return -1; | |
1760 | p[5] = 0; | |
1761 | data = p+6; | |
1762 | ||
1763 | do { | |
1764 | int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0'); | |
1765 | ||
1766 | if (!(f->states & (1<<state))) | |
1767 | return 0; | |
1768 | } while (0); | |
1769 | ||
1770 | s.local.family = s.remote.family = family; | |
1771 | if (family == AF_INET) { | |
1772 | sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport); | |
1773 | sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport); | |
1774 | s.local.bytelen = s.remote.bytelen = 4; | |
1775 | } else { | |
1776 | sscanf(loc, "%08x%08x%08x%08x:%x", | |
1777 | s.local.data, | |
1778 | s.local.data+1, | |
1779 | s.local.data+2, | |
1780 | s.local.data+3, | |
1781 | &s.lport); | |
1782 | sscanf(rem, "%08x%08x%08x%08x:%x", | |
1783 | s.remote.data, | |
1784 | s.remote.data+1, | |
1785 | s.remote.data+2, | |
1786 | s.remote.data+3, | |
1787 | &s.rport); | |
1788 | s.local.bytelen = s.remote.bytelen = 16; | |
1789 | } | |
1790 | ||
1791 | if (f->f && run_ssfilter(f->f, &s) == 0) | |
1792 | return 0; | |
1793 | ||
1794 | opt[0] = 0; | |
1795 | n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n", | |
1796 | &s.state, &s.wq, &s.rq, | |
1797 | &s.uid, &s.ino, | |
1798 | &s.refcnt, &s.sk, opt); | |
1799 | ||
1800 | if (n < 9) | |
1801 | opt[0] = 0; | |
1802 | ||
1803 | if (netid_width) | |
1804 | printf("%-*s ", netid_width, dg_proto); | |
1805 | if (state_width) | |
1806 | printf("%-*s ", state_width, sstate_name[s.state]); | |
1807 | ||
1808 | printf("%-6d %-6d ", s.rq, s.wq); | |
1809 | ||
1810 | formatted_print(&s.local, s.lport); | |
1811 | formatted_print(&s.remote, s.rport); | |
1812 | ||
1813 | if (show_users) { | |
1814 | char ubuf[4096]; | |
1815 | if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0) | |
1816 | printf(" users:(%s)", ubuf); | |
1817 | } | |
1818 | ||
1819 | if (show_details) { | |
1820 | if (s.uid) | |
1821 | printf(" uid=%u", (unsigned)s.uid); | |
1822 | printf(" ino=%u", s.ino); | |
1823 | printf(" sk=%llx", s.sk); | |
1824 | if (opt[0]) | |
1825 | printf(" opt:\"%s\"", opt); | |
1826 | } | |
1827 | printf("\n"); | |
1828 | ||
1829 | return 0; | |
1830 | } | |
1831 | ||
1832 | ||
1833 | int udp_show(struct filter *f) | |
1834 | { | |
1835 | FILE *fp = NULL; | |
1836 | ||
1837 | dg_proto = UDP_PROTO; | |
1838 | ||
1839 | if (f->families&(1<<AF_INET)) { | |
1840 | if ((fp = net_udp_open()) == NULL) | |
1841 | goto outerr; | |
1842 | if (generic_record_read(fp, dgram_show_line, f, AF_INET)) | |
1843 | goto outerr; | |
1844 | fclose(fp); | |
1845 | } | |
1846 | ||
1847 | if ((f->families&(1<<AF_INET6)) && | |
1848 | (fp = net_udp6_open()) != NULL) { | |
1849 | if (generic_record_read(fp, dgram_show_line, f, AF_INET6)) | |
1850 | goto outerr; | |
1851 | fclose(fp); | |
1852 | } | |
1853 | return 0; | |
1854 | ||
1855 | outerr: | |
1856 | do { | |
1857 | int saved_errno = errno; | |
1858 | if (fp) | |
1859 | fclose(fp); | |
1860 | errno = saved_errno; | |
1861 | return -1; | |
1862 | } while (0); | |
1863 | } | |
1864 | ||
1865 | int raw_show(struct filter *f) | |
1866 | { | |
1867 | FILE *fp = NULL; | |
1868 | ||
1869 | dg_proto = RAW_PROTO; | |
1870 | ||
1871 | if (f->families&(1<<AF_INET)) { | |
1872 | if ((fp = net_raw_open()) == NULL) | |
1873 | goto outerr; | |
1874 | if (generic_record_read(fp, dgram_show_line, f, AF_INET)) | |
1875 | goto outerr; | |
1876 | fclose(fp); | |
1877 | } | |
1878 | ||
1879 | if ((f->families&(1<<AF_INET6)) && | |
1880 | (fp = net_raw6_open()) != NULL) { | |
1881 | if (generic_record_read(fp, dgram_show_line, f, AF_INET6)) | |
1882 | goto outerr; | |
1883 | fclose(fp); | |
1884 | } | |
1885 | return 0; | |
1886 | ||
1887 | outerr: | |
1888 | do { | |
1889 | int saved_errno = errno; | |
1890 | if (fp) | |
1891 | fclose(fp); | |
1892 | errno = saved_errno; | |
1893 | return -1; | |
1894 | } while (0); | |
1895 | } | |
1896 | ||
1897 | ||
1898 | struct unixstat | |
1899 | { | |
1900 | struct unixstat *next; | |
1901 | int ino; | |
1902 | int peer; | |
1903 | int rq; | |
1904 | int wq; | |
1905 | int state; | |
1906 | int type; | |
1907 | char *name; | |
1908 | }; | |
1909 | ||
1910 | ||
1911 | ||
1912 | int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT, | |
1913 | SS_ESTABLISHED, SS_CLOSING }; | |
1914 | ||
1915 | ||
1916 | #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat)) | |
1917 | ||
1918 | void unix_list_free(struct unixstat *list) | |
1919 | { | |
1920 | while (list) { | |
1921 | struct unixstat *s = list; | |
1922 | list = list->next; | |
1923 | if (s->name) | |
1924 | free(s->name); | |
1925 | free(s); | |
1926 | } | |
1927 | } | |
1928 | ||
1929 | void unix_list_print(struct unixstat *list, struct filter *f) | |
1930 | { | |
1931 | struct unixstat *s; | |
1932 | char *peer; | |
1933 | ||
1934 | for (s = list; s; s = s->next) { | |
1935 | if (!(f->states & (1<<s->state))) | |
1936 | continue; | |
1937 | if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB))) | |
1938 | continue; | |
1939 | if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB))) | |
1940 | continue; | |
1941 | ||
1942 | peer = "*"; | |
1943 | if (s->peer) { | |
1944 | struct unixstat *p; | |
1945 | for (p = list; p; p = p->next) { | |
1946 | if (s->peer == p->ino) | |
1947 | break; | |
1948 | } | |
1949 | if (!p) { | |
1950 | peer = "?"; | |
1951 | } else { | |
1952 | peer = p->name ? : "*"; | |
1953 | } | |
1954 | } | |
1955 | ||
1956 | if (f->f) { | |
1957 | struct tcpstat tst; | |
1958 | tst.local.family = AF_UNIX; | |
1959 | tst.remote.family = AF_UNIX; | |
1960 | memcpy(tst.local.data, &s->name, sizeof(s->name)); | |
1961 | if (strcmp(peer, "*") == 0) | |
1962 | memset(tst.remote.data, 0, sizeof(peer)); | |
1963 | else | |
1964 | memcpy(tst.remote.data, &peer, sizeof(peer)); | |
1965 | if (run_ssfilter(f->f, &tst) == 0) | |
1966 | continue; | |
1967 | } | |
1968 | ||
1969 | if (netid_width) | |
1970 | printf("%-*s ", netid_width, | |
1971 | s->type == SOCK_STREAM ? "u_str" : "u_dgr"); | |
1972 | if (state_width) | |
1973 | printf("%-*s ", state_width, sstate_name[s->state]); | |
1974 | printf("%-6d %-6d ", s->rq, s->wq); | |
1975 | printf("%*s %-*d %*s %-*d", | |
1976 | addr_width, s->name ? : "*", serv_width, s->ino, | |
1977 | addr_width, peer, serv_width, s->peer); | |
1978 | if (show_users) { | |
1979 | char ubuf[4096]; | |
1980 | if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0) | |
1981 | printf(" users:(%s)", ubuf); | |
1982 | } | |
1983 | printf("\n"); | |
1984 | } | |
1985 | } | |
1986 | ||
1987 | int unix_show(struct filter *f) | |
1988 | { | |
1989 | FILE *fp; | |
1990 | char buf[256]; | |
1991 | char name[128]; | |
1992 | int newformat = 0; | |
1993 | int cnt; | |
1994 | struct unixstat *list = NULL; | |
1995 | ||
1996 | if ((fp = net_unix_open()) == NULL) | |
1997 | return -1; | |
1998 | fgets(buf, sizeof(buf)-1, fp); | |
1999 | ||
2000 | if (memcmp(buf, "Peer", 4) == 0) | |
2001 | newformat = 1; | |
2002 | cnt = 0; | |
2003 | ||
2004 | while (fgets(buf, sizeof(buf)-1, fp)) { | |
2005 | struct unixstat *u, **insp; | |
2006 | int flags; | |
2007 | ||
2008 | if (!(u = malloc(sizeof(*u)))) | |
2009 | break; | |
2010 | u->name = NULL; | |
2011 | ||
2012 | if (sscanf(buf, "%x: %x %x %x %x %x %d %s", | |
2013 | &u->peer, &u->rq, &u->wq, &flags, &u->type, | |
2014 | &u->state, &u->ino, name) < 8) | |
2015 | name[0] = 0; | |
2016 | ||
2017 | if (flags&(1<<16)) { | |
2018 | u->state = SS_LISTEN; | |
2019 | } else { | |
2020 | u->state = unix_state_map[u->state-1]; | |
2021 | if (u->type == SOCK_DGRAM && | |
2022 | u->state == SS_CLOSE && | |
2023 | u->peer) | |
2024 | u->state = SS_ESTABLISHED; | |
2025 | } | |
2026 | ||
2027 | if (!newformat) { | |
2028 | u->peer = 0; | |
2029 | u->rq = 0; | |
2030 | u->wq = 0; | |
2031 | } | |
2032 | ||
2033 | insp = &list; | |
2034 | while (*insp) { | |
2035 | if (u->type < (*insp)->type || | |
2036 | (u->type == (*insp)->type && | |
2037 | u->ino < (*insp)->ino)) | |
2038 | break; | |
2039 | insp = &(*insp)->next; | |
2040 | } | |
2041 | u->next = *insp; | |
2042 | *insp = u; | |
2043 | ||
2044 | if (name[0]) { | |
2045 | if ((u->name = malloc(strlen(name)+1)) == NULL) | |
2046 | break; | |
2047 | strcpy(u->name, name); | |
2048 | } | |
2049 | if (++cnt > MAX_UNIX_REMEMBER) { | |
2050 | unix_list_print(list, f); | |
2051 | unix_list_free(list); | |
2052 | list = NULL; | |
2053 | cnt = 0; | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | if (list) { | |
2058 | unix_list_print(list, f); | |
2059 | unix_list_free(list); | |
2060 | list = NULL; | |
2061 | cnt = 0; | |
2062 | } | |
2063 | ||
2064 | return 0; | |
2065 | } | |
2066 | ||
2067 | ||
2068 | int packet_show(struct filter *f) | |
2069 | { | |
2070 | FILE *fp; | |
2071 | char buf[256]; | |
2072 | int type; | |
2073 | int prot; | |
2074 | int iface; | |
2075 | int state; | |
2076 | int rq; | |
2077 | int uid; | |
2078 | int ino; | |
2079 | unsigned long long sk; | |
2080 | ||
2081 | if (!(f->states & (1<<SS_CLOSE))) | |
2082 | return 0; | |
2083 | ||
2084 | if ((fp = net_packet_open()) == NULL) | |
2085 | return -1; | |
2086 | fgets(buf, sizeof(buf)-1, fp); | |
2087 | ||
2088 | while (fgets(buf, sizeof(buf)-1, fp)) { | |
2089 | sscanf(buf, "%llx %*d %d %x %d %d %u %u %u", | |
2090 | &sk, | |
2091 | &type, &prot, &iface, &state, | |
2092 | &rq, &uid, &ino); | |
2093 | ||
2094 | if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB))) | |
2095 | continue; | |
2096 | if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB))) | |
2097 | continue; | |
2098 | if (f->f) { | |
2099 | struct tcpstat tst; | |
2100 | tst.local.family = AF_PACKET; | |
2101 | tst.remote.family = AF_PACKET; | |
2102 | tst.rport = 0; | |
2103 | tst.lport = iface; | |
2104 | tst.local.data[0] = prot; | |
2105 | tst.remote.data[0] = 0; | |
2106 | if (run_ssfilter(f->f, &tst) == 0) | |
2107 | continue; | |
2108 | } | |
2109 | ||
2110 | if (netid_width) | |
2111 | printf("%-*s ", netid_width, | |
2112 | type == SOCK_RAW ? "p_raw" : "p_dgr"); | |
2113 | if (state_width) | |
2114 | printf("%-*s ", state_width, "UNCONN"); | |
2115 | printf("%-6d %-6d ", rq, 0); | |
2116 | if (prot == 3) { | |
2117 | printf("%*s:", addr_width, "*"); | |
2118 | } else { | |
2119 | char tb[16]; | |
2120 | printf("%*s:", addr_width, | |
2121 | ll_proto_n2a(htons(prot), tb, sizeof(tb))); | |
2122 | } | |
2123 | if (iface == 0) { | |
2124 | printf("%-*s ", serv_width, "*"); | |
2125 | } else { | |
2126 | printf("%-*s ", serv_width, xll_index_to_name(iface)); | |
2127 | } | |
2128 | printf("%*s*%-*s", | |
2129 | addr_width, "", serv_width, ""); | |
2130 | ||
2131 | if (show_users) { | |
2132 | char ubuf[4096]; | |
2133 | if (find_users(ino, ubuf, sizeof(ubuf)) > 0) | |
2134 | printf(" users:(%s)", ubuf); | |
2135 | } | |
2136 | if (show_details) { | |
2137 | printf(" ino=%u uid=%u sk=%llx", ino, uid, sk); | |
2138 | } | |
2139 | printf("\n"); | |
2140 | } | |
2141 | ||
2142 | return 0; | |
2143 | } | |
2144 | ||
2145 | int netlink_show(struct filter *f) | |
2146 | { | |
2147 | FILE *fp; | |
2148 | char buf[256]; | |
2149 | int prot, pid; | |
2150 | unsigned groups; | |
2151 | int rq, wq, rc; | |
2152 | unsigned long long sk, cb; | |
2153 | ||
2154 | if (!(f->states & (1<<SS_CLOSE))) | |
2155 | return 0; | |
2156 | ||
2157 | if ((fp = net_netlink_open()) == NULL) | |
2158 | return -1; | |
2159 | fgets(buf, sizeof(buf)-1, fp); | |
2160 | ||
2161 | while (fgets(buf, sizeof(buf)-1, fp)) { | |
2162 | sscanf(buf, "%llx %d %d %x %d %d %llx %d", | |
2163 | &sk, | |
2164 | &prot, &pid, &groups, &rq, &wq, &cb, &rc); | |
2165 | ||
2166 | if (f->f) { | |
2167 | struct tcpstat tst; | |
2168 | tst.local.family = AF_NETLINK; | |
2169 | tst.remote.family = AF_NETLINK; | |
2170 | tst.rport = -1; | |
2171 | tst.lport = pid; | |
2172 | tst.local.data[0] = prot; | |
2173 | tst.remote.data[0] = 0; | |
2174 | if (run_ssfilter(f->f, &tst) == 0) | |
2175 | continue; | |
2176 | } | |
2177 | ||
2178 | if (netid_width) | |
2179 | printf("%-*s ", netid_width, "nl"); | |
2180 | if (state_width) | |
2181 | printf("%-*s ", state_width, "UNCONN"); | |
2182 | printf("%-6d %-6d ", rq, wq); | |
2183 | if (resolve_services && prot == 0) | |
2184 | printf("%*s:", addr_width, "rtnl"); | |
2185 | else if (resolve_services && prot == 3) | |
2186 | printf("%*s:", addr_width, "fw"); | |
2187 | else if (resolve_services && prot == 4) | |
2188 | printf("%*s:", addr_width, "tcpdiag"); | |
2189 | else | |
2190 | printf("%*d:", addr_width, prot); | |
2191 | if (pid == -1) { | |
2192 | printf("%-*s ", serv_width, "*"); | |
2193 | } else if (resolve_services) { | |
2194 | int done = 0; | |
2195 | if (!pid) { | |
2196 | done = 1; | |
2197 | printf("%-*s ", serv_width, "kernel"); | |
2198 | } else if (pid > 0) { | |
2199 | char procname[64]; | |
2200 | FILE *fp; | |
2201 | sprintf(procname, "%s/%d/stat", | |
2202 | getenv("PROC_ROOT") ? : "/proc", pid); | |
2203 | if ((fp = fopen(procname, "r")) != NULL) { | |
2204 | if (fscanf(fp, "%*d (%[^)])", procname) == 1) { | |
2205 | sprintf(procname+strlen(procname), "/%d", pid); | |
2206 | printf("%-*s ", serv_width, procname); | |
2207 | done = 1; | |
2208 | } | |
2209 | fclose(fp); | |
2210 | } | |
2211 | } | |
2212 | if (!done) | |
2213 | printf("%-*d ", serv_width, pid); | |
2214 | } else { | |
2215 | printf("%-*d ", serv_width, pid); | |
2216 | } | |
2217 | printf("%*s*%-*s", | |
2218 | addr_width, "", serv_width, ""); | |
2219 | ||
2220 | if (show_details) { | |
2221 | printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups); | |
2222 | } | |
2223 | printf("\n"); | |
2224 | } | |
2225 | ||
2226 | return 0; | |
2227 | } | |
2228 | ||
2229 | struct snmpstat | |
2230 | { | |
2231 | int tcp_estab; | |
2232 | }; | |
2233 | ||
2234 | int get_snmp_int(char *proto, char *key, int *result) | |
2235 | { | |
2236 | char buf[1024]; | |
2237 | FILE *fp; | |
2238 | int protolen = strlen(proto); | |
2239 | int keylen = strlen(key); | |
2240 | ||
2241 | *result = 0; | |
2242 | ||
2243 | if ((fp = net_snmp_open()) == NULL) | |
2244 | return -1; | |
2245 | ||
2246 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
2247 | char *p = buf; | |
2248 | int pos = 0; | |
2249 | if (memcmp(buf, proto, protolen)) | |
2250 | continue; | |
2251 | while ((p = strchr(p, ' ')) != NULL) { | |
2252 | pos++; | |
2253 | p++; | |
2254 | if (memcmp(p, key, keylen) == 0 && | |
2255 | (p[keylen] == ' ' || p[keylen] == '\n')) | |
2256 | break; | |
2257 | } | |
2258 | if (fgets(buf, sizeof(buf), fp) == NULL) | |
2259 | break; | |
2260 | if (memcmp(buf, proto, protolen)) | |
2261 | break; | |
2262 | p = buf; | |
2263 | while ((p = strchr(p, ' ')) != NULL) { | |
2264 | p++; | |
2265 | if (--pos == 0) { | |
2266 | sscanf(p, "%d", result); | |
2267 | fclose(fp); | |
2268 | return 0; | |
2269 | } | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | fclose(fp); | |
2274 | errno = ESRCH; | |
2275 | return -1; | |
2276 | } | |
2277 | ||
2278 | ||
2279 | /* Get stats from sockstat */ | |
2280 | ||
2281 | struct sockstat | |
2282 | { | |
2283 | int socks; | |
2284 | int tcp_mem; | |
2285 | int tcp_total; | |
2286 | int tcp_orphans; | |
2287 | int tcp_tws; | |
2288 | int tcp4_hashed; | |
2289 | int udp4; | |
2290 | int raw4; | |
2291 | int frag4; | |
2292 | int frag4_mem; | |
2293 | int tcp6_hashed; | |
2294 | int udp6; | |
2295 | int raw6; | |
2296 | int frag6; | |
2297 | int frag6_mem; | |
2298 | }; | |
2299 | ||
2300 | static void get_sockstat_line(char *line, struct sockstat *s) | |
2301 | { | |
2302 | char id[256], rem[256]; | |
2303 | ||
2304 | if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2) | |
2305 | return; | |
2306 | ||
2307 | if (strcmp(id, "sockets:") == 0) | |
2308 | sscanf(rem, "%*s%d", &s->socks); | |
2309 | else if (strcmp(id, "UDP:") == 0) | |
2310 | sscanf(rem, "%*s%d", &s->udp4); | |
2311 | else if (strcmp(id, "UDP6:") == 0) | |
2312 | sscanf(rem, "%*s%d", &s->udp6); | |
2313 | else if (strcmp(id, "RAW:") == 0) | |
2314 | sscanf(rem, "%*s%d", &s->raw4); | |
2315 | else if (strcmp(id, "RAW6:") == 0) | |
2316 | sscanf(rem, "%*s%d", &s->raw6); | |
2317 | else if (strcmp(id, "TCP6:") == 0) | |
2318 | sscanf(rem, "%*s%d", &s->tcp6_hashed); | |
2319 | else if (strcmp(id, "FRAG:") == 0) | |
2320 | sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem); | |
2321 | else if (strcmp(id, "FRAG6:") == 0) | |
2322 | sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem); | |
2323 | else if (strcmp(id, "TCP:") == 0) | |
2324 | sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d", | |
2325 | &s->tcp4_hashed, | |
2326 | &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem); | |
2327 | } | |
2328 | ||
2329 | int get_sockstat(struct sockstat *s) | |
2330 | { | |
2331 | char buf[256]; | |
2332 | FILE *fp; | |
2333 | ||
2334 | memset(s, 0, sizeof(*s)); | |
2335 | ||
2336 | if ((fp = net_sockstat_open()) == NULL) | |
2337 | return -1; | |
2338 | while(fgets(buf, sizeof(buf), fp) != NULL) | |
2339 | get_sockstat_line(buf, s); | |
2340 | fclose(fp); | |
2341 | ||
2342 | if ((fp = net_sockstat6_open()) == NULL) | |
2343 | return 0; | |
2344 | while(fgets(buf, sizeof(buf), fp) != NULL) | |
2345 | get_sockstat_line(buf, s); | |
2346 | fclose(fp); | |
2347 | ||
2348 | return 0; | |
2349 | } | |
2350 | ||
2351 | int print_summary(void) | |
2352 | { | |
2353 | struct sockstat s; | |
2354 | struct snmpstat sn; | |
2355 | ||
2356 | if (get_sockstat(&s) < 0) | |
2357 | perror("ss: get_sockstat"); | |
2358 | if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0) | |
2359 | perror("ss: get_snmpstat"); | |
2360 | ||
2361 | printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks); | |
2362 | ||
2363 | printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n", | |
2364 | s.tcp_total + slabstat.tcp_syns + s.tcp_tws, | |
2365 | sn.tcp_estab, | |
2366 | s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws), | |
2367 | s.tcp_orphans, | |
2368 | slabstat.tcp_syns, | |
2369 | s.tcp_tws, slabstat.tcp_tws, | |
2370 | slabstat.tcp_ports | |
2371 | ); | |
2372 | ||
2373 | printf("\n"); | |
2374 | printf("Transport Total IP IPv6\n"); | |
2375 | printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-"); | |
2376 | printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6); | |
2377 | printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6); | |
2378 | printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed); | |
2379 | printf("INET %-9d %-9d %-9d\n", | |
2380 | s.raw4+s.udp4+s.tcp4_hashed+ | |
2381 | s.raw6+s.udp6+s.tcp6_hashed, | |
2382 | s.raw4+s.udp4+s.tcp4_hashed, | |
2383 | s.raw6+s.udp6+s.tcp6_hashed); | |
2384 | printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6); | |
2385 | ||
2386 | printf("\n"); | |
2387 | ||
2388 | return 0; | |
2389 | } | |
2390 | ||
2391 | static void _usage(FILE *dest) | |
2392 | { | |
2393 | fprintf(dest, | |
2394 | "Usage: ss [ OPTIONS ]\n" | |
2395 | " ss [ OPTIONS ] [ FILTER ]\n" | |
2396 | " -h, --help this message\n" | |
2397 | " -V, --version output version information\n" | |
2398 | " -n, --numeric don't resolve service names\n" | |
2399 | " -r, --resolve resolve host names\n" | |
2400 | " -a, --all display all sockets\n" | |
2401 | " -l, --listening display listening sockets\n" | |
2402 | " -o, --options show timer information\n" | |
2403 | " -e, --extended show detailed socket information\n" | |
2404 | " -m, --memory show socket memory usage\n" | |
2405 | " -p, --processes show process using socket\n" | |
2406 | " -i, --info show internal TCP information\n" | |
2407 | " -s, --summary show socket usage summary\n" | |
2408 | "\n" | |
2409 | " -4, --ipv4 display only IP version 4 sockets\n" | |
2410 | " -6, --ipv6 display only IP version 6 sockets\n" | |
2411 | " -0, --packet display PACKET sockets\n" | |
2412 | " -t, --tcp display only TCP sockets\n" | |
2413 | " -u, --udp display only UDP sockets\n" | |
2414 | " -d, --dccp display only DCCP sockets\n" | |
2415 | " -w, --raw display only RAW sockets\n" | |
2416 | " -x, --unix display only Unix domain sockets\n" | |
2417 | " -f, --family=FAMILY display sockets of type FAMILY\n" | |
2418 | "\n" | |
2419 | " -A, --query=QUERY\n" | |
2420 | " QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n" | |
2421 | "\n" | |
2422 | " -F, --filter=FILE read filter information from FILE\n" | |
2423 | " FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n" | |
2424 | ); | |
2425 | } | |
2426 | ||
2427 | static void help(void) __attribute__((noreturn)); | |
2428 | static void help(void) | |
2429 | { | |
2430 | _usage(stdout); | |
2431 | exit(0); | |
2432 | } | |
2433 | ||
2434 | static void usage(void) __attribute__((noreturn)); | |
2435 | static void usage(void) | |
2436 | { | |
2437 | _usage(stderr); | |
2438 | exit(-1); | |
2439 | } | |
2440 | ||
2441 | ||
2442 | int scan_state(const char *state) | |
2443 | { | |
2444 | int i; | |
2445 | if (strcasecmp(state, "close") == 0 || | |
2446 | strcasecmp(state, "closed") == 0) | |
2447 | return (1<<SS_CLOSE); | |
2448 | if (strcasecmp(state, "syn-rcv") == 0) | |
2449 | return (1<<SS_SYN_RECV); | |
2450 | if (strcasecmp(state, "established") == 0) | |
2451 | return (1<<SS_ESTABLISHED); | |
2452 | if (strcasecmp(state, "all") == 0) | |
2453 | return SS_ALL; | |
2454 | if (strcasecmp(state, "connected") == 0) | |
2455 | return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)); | |
2456 | if (strcasecmp(state, "synchronized") == 0) | |
2457 | return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT)); | |
2458 | if (strcasecmp(state, "bucket") == 0) | |
2459 | return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT); | |
2460 | if (strcasecmp(state, "big") == 0) | |
2461 | return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT)); | |
2462 | for (i=0; i<SS_MAX; i++) { | |
2463 | if (strcasecmp(state, sstate_namel[i]) == 0) | |
2464 | return (1<<i); | |
2465 | } | |
2466 | return 0; | |
2467 | } | |
2468 | ||
2469 | static const struct option long_opts[] = { | |
2470 | { "numeric", 0, 0, 'n' }, | |
2471 | { "resolve", 0, 0, 'r' }, | |
2472 | { "options", 0, 0, 'o' }, | |
2473 | { "extended", 0, 0, 'e' }, | |
2474 | { "memory", 0, 0, 'm' }, | |
2475 | { "info", 0, 0, 'i' }, | |
2476 | { "processes", 0, 0, 'p' }, | |
2477 | { "dccp", 0, 0, 'd' }, | |
2478 | { "tcp", 0, 0, 't' }, | |
2479 | { "udp", 0, 0, 'u' }, | |
2480 | { "raw", 0, 0, 'w' }, | |
2481 | { "unix", 0, 0, 'x' }, | |
2482 | { "all", 0, 0, 'a' }, | |
2483 | { "listening", 0, 0, 'l' }, | |
2484 | { "ipv4", 0, 0, '4' }, | |
2485 | { "ipv6", 0, 0, '6' }, | |
2486 | { "packet", 0, 0, '0' }, | |
2487 | { "family", 1, 0, 'f' }, | |
2488 | { "socket", 1, 0, 'A' }, | |
2489 | { "summary", 0, 0, 's' }, | |
2490 | { "diag", 0, 0, 'D' }, | |
2491 | { "filter", 1, 0, 'F' }, | |
2492 | { "version", 0, 0, 'V' }, | |
2493 | { "help", 0, 0, 'h' }, | |
2494 | { 0 } | |
2495 | ||
2496 | }; | |
2497 | ||
2498 | int main(int argc, char *argv[]) | |
2499 | { | |
2500 | int do_default = 1; | |
2501 | int saw_states = 0; | |
2502 | int saw_query = 0; | |
2503 | int do_summary = 0; | |
2504 | const char *dump_tcpdiag = NULL; | |
2505 | FILE *filter_fp = NULL; | |
2506 | int ch; | |
2507 | ||
2508 | memset(¤t_filter, 0, sizeof(current_filter)); | |
2509 | ||
2510 | current_filter.states = default_filter.states; | |
2511 | ||
2512 | while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spf:miA:D:F:vV", | |
2513 | long_opts, NULL)) != EOF) { | |
2514 | switch(ch) { | |
2515 | case 'n': | |
2516 | resolve_services = 0; | |
2517 | break; | |
2518 | case 'r': | |
2519 | resolve_hosts = 1; | |
2520 | break; | |
2521 | case 'o': | |
2522 | show_options = 1; | |
2523 | break; | |
2524 | case 'e': | |
2525 | show_options = 1; | |
2526 | show_details++; | |
2527 | break; | |
2528 | case 'm': | |
2529 | show_mem = 1; | |
2530 | break; | |
2531 | case 'i': | |
2532 | show_tcpinfo = 1; | |
2533 | break; | |
2534 | case 'p': | |
2535 | show_users++; | |
2536 | user_ent_hash_build(); | |
2537 | break; | |
2538 | case 'd': | |
2539 | current_filter.dbs |= (1<<DCCP_DB); | |
2540 | do_default = 0; | |
2541 | break; | |
2542 | case 't': | |
2543 | current_filter.dbs |= (1<<TCP_DB); | |
2544 | do_default = 0; | |
2545 | break; | |
2546 | case 'u': | |
2547 | current_filter.dbs |= (1<<UDP_DB); | |
2548 | do_default = 0; | |
2549 | break; | |
2550 | case 'w': | |
2551 | current_filter.dbs |= (1<<RAW_DB); | |
2552 | do_default = 0; | |
2553 | break; | |
2554 | case 'x': | |
2555 | current_filter.dbs |= UNIX_DBM; | |
2556 | do_default = 0; | |
2557 | break; | |
2558 | case 'a': | |
2559 | current_filter.states = SS_ALL; | |
2560 | break; | |
2561 | case 'l': | |
2562 | current_filter.states = (1<<SS_LISTEN); | |
2563 | break; | |
2564 | case '4': | |
2565 | preferred_family = AF_INET; | |
2566 | break; | |
2567 | case '6': | |
2568 | preferred_family = AF_INET6; | |
2569 | break; | |
2570 | case '0': | |
2571 | preferred_family = AF_PACKET; | |
2572 | break; | |
2573 | case 'f': | |
2574 | if (strcmp(optarg, "inet") == 0) | |
2575 | preferred_family = AF_INET; | |
2576 | else if (strcmp(optarg, "inet6") == 0) | |
2577 | preferred_family = AF_INET6; | |
2578 | else if (strcmp(optarg, "link") == 0) | |
2579 | preferred_family = AF_PACKET; | |
2580 | else if (strcmp(optarg, "unix") == 0) | |
2581 | preferred_family = AF_UNIX; | |
2582 | else if (strcmp(optarg, "netlink") == 0) | |
2583 | preferred_family = AF_NETLINK; | |
2584 | else if (strcmp(optarg, "help") == 0) | |
2585 | help(); | |
2586 | else { | |
2587 | fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg); | |
2588 | usage(); | |
2589 | } | |
2590 | break; | |
2591 | case 'A': | |
2592 | { | |
2593 | char *p, *p1; | |
2594 | if (!saw_query) { | |
2595 | current_filter.dbs = 0; | |
2596 | saw_query = 1; | |
2597 | do_default = 0; | |
2598 | } | |
2599 | p = p1 = optarg; | |
2600 | do { | |
2601 | if ((p1 = strchr(p, ',')) != NULL) | |
2602 | *p1 = 0; | |
2603 | if (strcmp(p, "all") == 0) { | |
2604 | current_filter.dbs = ALL_DB; | |
2605 | } else if (strcmp(p, "inet") == 0) { | |
2606 | current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB); | |
2607 | } else if (strcmp(p, "udp") == 0) { | |
2608 | current_filter.dbs |= (1<<UDP_DB); | |
2609 | } else if (strcmp(p, "dccp") == 0) { | |
2610 | current_filter.dbs |= (1<<DCCP_DB); | |
2611 | } else if (strcmp(p, "tcp") == 0) { | |
2612 | current_filter.dbs |= (1<<TCP_DB); | |
2613 | } else if (strcmp(p, "raw") == 0) { | |
2614 | current_filter.dbs |= (1<<RAW_DB); | |
2615 | } else if (strcmp(p, "unix") == 0) { | |
2616 | current_filter.dbs |= UNIX_DBM; | |
2617 | } else if (strcasecmp(p, "unix_stream") == 0 || | |
2618 | strcmp(p, "u_str") == 0) { | |
2619 | current_filter.dbs |= (1<<UNIX_ST_DB); | |
2620 | } else if (strcasecmp(p, "unix_dgram") == 0 || | |
2621 | strcmp(p, "u_dgr") == 0) { | |
2622 | current_filter.dbs |= (1<<UNIX_DG_DB); | |
2623 | } else if (strcmp(p, "packet") == 0) { | |
2624 | current_filter.dbs |= PACKET_DBM; | |
2625 | } else if (strcmp(p, "packet_raw") == 0 || | |
2626 | strcmp(p, "p_raw") == 0) { | |
2627 | current_filter.dbs |= (1<<PACKET_R_DB); | |
2628 | } else if (strcmp(p, "packet_dgram") == 0 || | |
2629 | strcmp(p, "p_dgr") == 0) { | |
2630 | current_filter.dbs |= (1<<PACKET_DG_DB); | |
2631 | } else if (strcmp(p, "netlink") == 0) { | |
2632 | current_filter.dbs |= (1<<NETLINK_DB); | |
2633 | } else { | |
2634 | fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p); | |
2635 | usage(); | |
2636 | } | |
2637 | p = p1 + 1; | |
2638 | } while (p1); | |
2639 | break; | |
2640 | } | |
2641 | case 's': | |
2642 | do_summary = 1; | |
2643 | break; | |
2644 | case 'D': | |
2645 | dump_tcpdiag = optarg; | |
2646 | break; | |
2647 | case 'F': | |
2648 | if (filter_fp) { | |
2649 | fprintf(stderr, "More than one filter file\n"); | |
2650 | exit(-1); | |
2651 | } | |
2652 | if (optarg[0] == '-') | |
2653 | filter_fp = stdin; | |
2654 | else | |
2655 | filter_fp = fopen(optarg, "r"); | |
2656 | if (!filter_fp) { | |
2657 | perror("fopen filter file"); | |
2658 | exit(-1); | |
2659 | } | |
2660 | break; | |
2661 | case 'v': | |
2662 | case 'V': | |
2663 | printf("ss utility, iproute2-ss%s\n", SNAPSHOT); | |
2664 | exit(0); | |
2665 | case 'h': | |
2666 | case '?': | |
2667 | help(); | |
2668 | default: | |
2669 | usage(); | |
2670 | } | |
2671 | } | |
2672 | ||
2673 | argc -= optind; | |
2674 | argv += optind; | |
2675 | ||
2676 | get_slabstat(&slabstat); | |
2677 | ||
2678 | if (do_summary) { | |
2679 | print_summary(); | |
2680 | if (do_default && argc == 0) | |
2681 | exit(0); | |
2682 | } | |
2683 | ||
2684 | if (do_default) | |
2685 | current_filter.dbs = default_filter.dbs; | |
2686 | ||
2687 | if (preferred_family == AF_UNSPEC) { | |
2688 | if (!(current_filter.dbs&~UNIX_DBM)) | |
2689 | preferred_family = AF_UNIX; | |
2690 | else if (!(current_filter.dbs&~PACKET_DBM)) | |
2691 | preferred_family = AF_PACKET; | |
2692 | else if (!(current_filter.dbs&~(1<<NETLINK_DB))) | |
2693 | preferred_family = AF_NETLINK; | |
2694 | } | |
2695 | ||
2696 | if (preferred_family != AF_UNSPEC) { | |
2697 | int mask2; | |
2698 | if (preferred_family == AF_INET || | |
2699 | preferred_family == AF_INET6) { | |
2700 | mask2= current_filter.dbs; | |
2701 | } else if (preferred_family == AF_PACKET) { | |
2702 | mask2 = PACKET_DBM; | |
2703 | } else if (preferred_family == AF_UNIX) { | |
2704 | mask2 = UNIX_DBM; | |
2705 | } else if (preferred_family == AF_NETLINK) { | |
2706 | mask2 = (1<<NETLINK_DB); | |
2707 | } else { | |
2708 | mask2 = 0; | |
2709 | } | |
2710 | ||
2711 | if (do_default) | |
2712 | current_filter.dbs = mask2; | |
2713 | else | |
2714 | current_filter.dbs &= mask2; | |
2715 | current_filter.families = (1<<preferred_family); | |
2716 | } else { | |
2717 | if (!do_default) | |
2718 | current_filter.families = ~0; | |
2719 | else | |
2720 | current_filter.families = default_filter.families; | |
2721 | } | |
2722 | if (current_filter.dbs == 0) { | |
2723 | fprintf(stderr, "ss: no socket tables to show with such filter.\n"); | |
2724 | exit(0); | |
2725 | } | |
2726 | if (current_filter.families == 0) { | |
2727 | fprintf(stderr, "ss: no families to show with such filter.\n"); | |
2728 | exit(0); | |
2729 | } | |
2730 | ||
2731 | if (resolve_services && resolve_hosts && | |
2732 | (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)))) | |
2733 | init_service_resolver(); | |
2734 | ||
2735 | /* Now parse filter... */ | |
2736 | if (argc == 0 && filter_fp) { | |
2737 | if (ssfilter_parse(¤t_filter.f, 0, NULL, filter_fp)) | |
2738 | usage(); | |
2739 | } | |
2740 | ||
2741 | while (argc > 0) { | |
2742 | if (strcmp(*argv, "state") == 0) { | |
2743 | NEXT_ARG(); | |
2744 | if (!saw_states) | |
2745 | current_filter.states = 0; | |
2746 | current_filter.states |= scan_state(*argv); | |
2747 | saw_states = 1; | |
2748 | } else if (strcmp(*argv, "exclude") == 0 || | |
2749 | strcmp(*argv, "excl") == 0) { | |
2750 | NEXT_ARG(); | |
2751 | if (!saw_states) | |
2752 | current_filter.states = SS_ALL; | |
2753 | current_filter.states &= ~scan_state(*argv); | |
2754 | saw_states = 1; | |
2755 | } else { | |
2756 | if (ssfilter_parse(¤t_filter.f, argc, argv, filter_fp)) | |
2757 | usage(); | |
2758 | break; | |
2759 | } | |
2760 | argc--; argv++; | |
2761 | } | |
2762 | ||
2763 | if (current_filter.states == 0) { | |
2764 | fprintf(stderr, "ss: no socket states to show with such filter.\n"); | |
2765 | exit(0); | |
2766 | } | |
2767 | ||
2768 | if (dump_tcpdiag) { | |
2769 | FILE *dump_fp = stdout; | |
2770 | if (!(current_filter.dbs & (1<<TCP_DB))) { | |
2771 | fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n"); | |
2772 | exit(0); | |
2773 | } | |
2774 | if (dump_tcpdiag[0] != '-') { | |
2775 | dump_fp = fopen(dump_tcpdiag, "w"); | |
2776 | if (!dump_tcpdiag) { | |
2777 | perror("fopen dump file"); | |
2778 | exit(-1); | |
2779 | } | |
2780 | } | |
2781 | tcp_show_netlink(¤t_filter, dump_fp, TCPDIAG_GETSOCK); | |
2782 | fflush(dump_fp); | |
2783 | exit(0); | |
2784 | } | |
2785 | ||
2786 | netid_width = 0; | |
2787 | if (current_filter.dbs&(current_filter.dbs-1)) | |
2788 | netid_width = 5; | |
2789 | ||
2790 | state_width = 0; | |
2791 | if (current_filter.states&(current_filter.states-1)) | |
2792 | state_width = 10; | |
2793 | ||
2794 | screen_width = 80; | |
2795 | if (isatty(STDOUT_FILENO)) { | |
2796 | struct winsize w; | |
2797 | ||
2798 | if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) { | |
2799 | if (w.ws_col > 0) | |
2800 | screen_width = w.ws_col; | |
2801 | } | |
2802 | } | |
2803 | ||
2804 | addrp_width = screen_width; | |
2805 | addrp_width -= netid_width+1; | |
2806 | addrp_width -= state_width+1; | |
2807 | addrp_width -= 14; | |
2808 | ||
2809 | if (addrp_width&1) { | |
2810 | if (netid_width) | |
2811 | netid_width++; | |
2812 | else if (state_width) | |
2813 | state_width++; | |
2814 | } | |
2815 | ||
2816 | addrp_width /= 2; | |
2817 | addrp_width--; | |
2818 | ||
2819 | serv_width = resolve_services ? 7 : 5; | |
2820 | ||
2821 | if (addrp_width < 15+serv_width+1) | |
2822 | addrp_width = 15+serv_width+1; | |
2823 | ||
2824 | addr_width = addrp_width - serv_width - 1; | |
2825 | ||
2826 | if (netid_width) | |
2827 | printf("%-*s ", netid_width, "Netid"); | |
2828 | if (state_width) | |
2829 | printf("%-*s ", state_width, "State"); | |
2830 | printf("%-6s %-6s ", "Recv-Q", "Send-Q"); | |
2831 | ||
2832 | printf("%*s:%-*s %*s:%-*s\n", | |
2833 | addr_width, "Local Address", serv_width, "Port", | |
2834 | addr_width, "Peer Address", serv_width, "Port"); | |
2835 | ||
2836 | fflush(stdout); | |
2837 | ||
2838 | if (current_filter.dbs & (1<<NETLINK_DB)) | |
2839 | netlink_show(¤t_filter); | |
2840 | if (current_filter.dbs & PACKET_DBM) | |
2841 | packet_show(¤t_filter); | |
2842 | if (current_filter.dbs & UNIX_DBM) | |
2843 | unix_show(¤t_filter); | |
2844 | if (current_filter.dbs & (1<<RAW_DB)) | |
2845 | raw_show(¤t_filter); | |
2846 | if (current_filter.dbs & (1<<UDP_DB)) | |
2847 | udp_show(¤t_filter); | |
2848 | if (current_filter.dbs & (1<<TCP_DB)) | |
2849 | tcp_show(¤t_filter, TCPDIAG_GETSOCK); | |
2850 | if (current_filter.dbs & (1<<DCCP_DB)) | |
2851 | tcp_show(¤t_filter, DCCPDIAG_GETSOCK); | |
2852 | return 0; | |
2853 | } |