libnl  3.3.0
ct_obj.c
1 /*
2  * lib/netfilter/ct_obj.c Conntrack Object
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation version 2.1
7  * of the License.
8  *
9  * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
10  * Copyright (c) 2007 Philip Craig <philipc@snapgear.com>
11  * Copyright (c) 2007 Secure Computing Corporation
12  */
13 
14 #include <sys/types.h>
15 #include <linux/netfilter/nfnetlink_conntrack.h>
16 #include <linux/netfilter/nf_conntrack_common.h>
17 #include <linux/netfilter/nf_conntrack_tcp.h>
18 
19 #include <netlink-private/netlink.h>
20 #include <netlink/netfilter/nfnl.h>
21 #include <netlink/netfilter/ct.h>
22 
23 /** @cond SKIP */
24 #define CT_ATTR_FAMILY (1UL << 0)
25 #define CT_ATTR_PROTO (1UL << 1)
26 
27 #define CT_ATTR_TCP_STATE (1UL << 2)
28 
29 #define CT_ATTR_STATUS (1UL << 3)
30 #define CT_ATTR_TIMEOUT (1UL << 4)
31 #define CT_ATTR_MARK (1UL << 5)
32 #define CT_ATTR_USE (1UL << 6)
33 #define CT_ATTR_ID (1UL << 7)
34 
35 #define CT_ATTR_ORIG_SRC (1UL << 8)
36 #define CT_ATTR_ORIG_DST (1UL << 9)
37 #define CT_ATTR_ORIG_SRC_PORT (1UL << 10)
38 #define CT_ATTR_ORIG_DST_PORT (1UL << 11)
39 #define CT_ATTR_ORIG_ICMP_ID (1UL << 12)
40 #define CT_ATTR_ORIG_ICMP_TYPE (1UL << 13)
41 #define CT_ATTR_ORIG_ICMP_CODE (1UL << 14)
42 #define CT_ATTR_ORIG_PACKETS (1UL << 15)
43 #define CT_ATTR_ORIG_BYTES (1UL << 16)
44 
45 #define CT_ATTR_REPL_SRC (1UL << 17)
46 #define CT_ATTR_REPL_DST (1UL << 18)
47 #define CT_ATTR_REPL_SRC_PORT (1UL << 19)
48 #define CT_ATTR_REPL_DST_PORT (1UL << 20)
49 #define CT_ATTR_REPL_ICMP_ID (1UL << 21)
50 #define CT_ATTR_REPL_ICMP_TYPE (1UL << 22)
51 #define CT_ATTR_REPL_ICMP_CODE (1UL << 23)
52 #define CT_ATTR_REPL_PACKETS (1UL << 24)
53 #define CT_ATTR_REPL_BYTES (1UL << 25)
54 #define CT_ATTR_TIMESTAMP (1UL << 26)
55 #define CT_ATTR_ZONE (1UL << 27)
56 /** @endcond */
57 
58 static void ct_free_data(struct nl_object *c)
59 {
60  struct nfnl_ct *ct = (struct nfnl_ct *) c;
61 
62  if (ct == NULL)
63  return;
64 
65  nl_addr_put(ct->ct_orig.src);
66  nl_addr_put(ct->ct_orig.dst);
67  nl_addr_put(ct->ct_repl.src);
68  nl_addr_put(ct->ct_repl.dst);
69 }
70 
71 static int ct_clone(struct nl_object *_dst, struct nl_object *_src)
72 {
73  struct nfnl_ct *dst = (struct nfnl_ct *) _dst;
74  struct nfnl_ct *src = (struct nfnl_ct *) _src;
75  struct nl_addr *addr;
76 
77  if (src->ct_orig.src) {
78  addr = nl_addr_clone(src->ct_orig.src);
79  if (!addr)
80  return -NLE_NOMEM;
81  dst->ct_orig.src = addr;
82  }
83 
84  if (src->ct_orig.dst) {
85  addr = nl_addr_clone(src->ct_orig.dst);
86  if (!addr)
87  return -NLE_NOMEM;
88  dst->ct_orig.dst = addr;
89  }
90 
91  if (src->ct_repl.src) {
92  addr = nl_addr_clone(src->ct_repl.src);
93  if (!addr)
94  return -NLE_NOMEM;
95  dst->ct_repl.src = addr;
96  }
97 
98  if (src->ct_repl.dst) {
99  addr = nl_addr_clone(src->ct_repl.dst);
100  if (!addr)
101  return -NLE_NOMEM;
102  dst->ct_repl.dst = addr;
103  }
104 
105  return 0;
106 }
107 
108 static void dump_addr(struct nl_dump_params *p, struct nl_addr *addr, int port)
109 {
110  char buf[64];
111 
112  if (addr)
113  nl_dump(p, "%s", nl_addr2str(addr, buf, sizeof(buf)));
114 
115  if (port)
116  nl_dump(p, ":%u ", port);
117  else if (addr)
118  nl_dump(p, " ");
119 }
120 
121 static void dump_icmp(struct nl_dump_params *p, struct nfnl_ct *ct, int reply)
122 {
123  if (nfnl_ct_test_icmp_type(ct, reply))
124  nl_dump(p, "icmp type %d ", nfnl_ct_get_icmp_type(ct, reply));
125 
126  if (nfnl_ct_test_icmp_code(ct, reply))
127  nl_dump(p, "code %d ", nfnl_ct_get_icmp_code(ct, reply));
128 
129  if (nfnl_ct_test_icmp_id(ct, reply))
130  nl_dump(p, "id %d ", nfnl_ct_get_icmp_id(ct, reply));
131 }
132 
133 static void ct_dump_tuples(struct nfnl_ct *ct, struct nl_dump_params *p)
134 {
135  struct nl_addr *orig_src, *orig_dst, *reply_src, *reply_dst;
136  int orig_sport = 0, orig_dport = 0, reply_sport = 0, reply_dport = 0;
137  int sync = 0;
138 
139  orig_src = nfnl_ct_get_src(ct, 0);
140  orig_dst = nfnl_ct_get_dst(ct, 0);
141  reply_src = nfnl_ct_get_src(ct, 1);
142  reply_dst = nfnl_ct_get_dst(ct, 1);
143 
144  if (nfnl_ct_test_src_port(ct, 0))
145  orig_sport = nfnl_ct_get_src_port(ct, 0);
146 
147  if (nfnl_ct_test_dst_port(ct, 0))
148  orig_dport = nfnl_ct_get_dst_port(ct, 0);
149 
150  if (nfnl_ct_test_src_port(ct, 1))
151  reply_sport = nfnl_ct_get_src_port(ct, 1);
152 
153  if (nfnl_ct_test_dst_port(ct, 1))
154  reply_dport = nfnl_ct_get_dst_port(ct, 1);
155 
156  if (orig_src && orig_dst && reply_src && reply_dst &&
157  orig_sport == reply_dport && orig_dport == reply_sport &&
158  !nl_addr_cmp(orig_src, reply_dst) &&
159  !nl_addr_cmp(orig_dst, reply_src))
160  sync = 1;
161 
162  dump_addr(p, orig_src, orig_sport);
163  nl_dump(p, sync ? "<-> " : "-> ");
164  dump_addr(p, orig_dst, orig_dport);
165  dump_icmp(p, ct, 0);
166 
167  if (!sync) {
168  dump_addr(p, reply_src, reply_sport);
169  nl_dump(p, "<- ");
170  dump_addr(p, reply_dst, reply_dport);
171  dump_icmp(p, ct, 1);
172  }
173 }
174 
175 /* Compatible with /proc/net/nf_conntrack */
176 static void ct_dump_line(struct nl_object *a, struct nl_dump_params *p)
177 {
178  struct nfnl_ct *ct = (struct nfnl_ct *) a;
179  char buf[64];
180 
181  nl_new_line(p);
182 
183  if (nfnl_ct_test_proto(ct))
184  nl_dump(p, "%s ",
185  nl_ip_proto2str(nfnl_ct_get_proto(ct), buf, sizeof(buf)));
186 
187  if (nfnl_ct_test_tcp_state(ct))
188  nl_dump(p, "%s ",
189  nfnl_ct_tcp_state2str(nfnl_ct_get_tcp_state(ct),
190  buf, sizeof(buf)));
191 
192  ct_dump_tuples(ct, p);
193 
194  if (nfnl_ct_test_mark(ct) && nfnl_ct_get_mark(ct))
195  nl_dump(p, "mark %u ", nfnl_ct_get_mark(ct));
196 
197  if (nfnl_ct_test_zone(ct))
198  nl_dump(p, "zone %hu ", nfnl_ct_get_zone(ct));
199 
200  if (nfnl_ct_test_timestamp(ct)) {
201  const struct nfnl_ct_timestamp *tstamp = nfnl_ct_get_timestamp(ct);
202  int64_t delta_time = tstamp->stop - tstamp->start;
203 
204  if (delta_time > 0)
205  delta_time /= NSEC_PER_SEC;
206  else
207  delta_time = 0;
208  nl_dump(p, "delta-time %llu ", delta_time);
209  }
210 
211  nl_dump(p, "\n");
212 }
213 
214 static void ct_dump_details(struct nl_object *a, struct nl_dump_params *p)
215 {
216  struct nfnl_ct *ct = (struct nfnl_ct *) a;
217  char buf[64];
218  int fp = 0;
219 
220  ct_dump_line(a, p);
221 
222  nl_dump(p, " id 0x%x ", ct->ct_id);
223  nl_dump_line(p, "family %s ",
224  nl_af2str(ct->ct_family, buf, sizeof(buf)));
225 
226  if (nfnl_ct_test_use(ct))
227  nl_dump(p, "refcnt %u ", nfnl_ct_get_use(ct));
228 
229  if (nfnl_ct_test_timeout(ct)) {
230  uint64_t timeout_ms = nfnl_ct_get_timeout(ct) * 1000UL;
231  nl_dump(p, "timeout %s ",
232  nl_msec2str(timeout_ms, buf, sizeof(buf)));
233  }
234 
235  if (ct->ct_status)
236  nl_dump(p, "<");
237 
238 #define PRINT_FLAG(str) \
239  { nl_dump(p, "%s%s", fp++ ? "," : "", (str)); }
240 
241  if (ct->ct_status & IPS_EXPECTED)
242  PRINT_FLAG("EXPECTED");
243  if (!(ct->ct_status & IPS_SEEN_REPLY))
244  PRINT_FLAG("NOREPLY");
245  if (ct->ct_status & IPS_ASSURED)
246  PRINT_FLAG("ASSURED");
247  if (!(ct->ct_status & IPS_CONFIRMED))
248  PRINT_FLAG("NOTSENT");
249  if (ct->ct_status & IPS_SRC_NAT)
250  PRINT_FLAG("SNAT");
251  if (ct->ct_status & IPS_DST_NAT)
252  PRINT_FLAG("DNAT");
253  if (ct->ct_status & IPS_SEQ_ADJUST)
254  PRINT_FLAG("SEQADJUST");
255  if (!(ct->ct_status & IPS_SRC_NAT_DONE))
256  PRINT_FLAG("SNAT_INIT");
257  if (!(ct->ct_status & IPS_DST_NAT_DONE))
258  PRINT_FLAG("DNAT_INIT");
259  if (ct->ct_status & IPS_DYING)
260  PRINT_FLAG("DYING");
261  if (ct->ct_status & IPS_FIXED_TIMEOUT)
262  PRINT_FLAG("FIXED_TIMEOUT");
263 #undef PRINT_FLAG
264 
265  if (ct->ct_status)
266  nl_dump(p, ">");
267  nl_dump(p, "\n");
268 }
269 
270 static void ct_dump_stats(struct nl_object *a, struct nl_dump_params *p)
271 {
272  struct nfnl_ct *ct = (struct nfnl_ct *) a;
273  double res;
274  char *unit;
275  uint64_t packets;
276  const char * const names[] = {"rx", "tx"};
277  int i;
278 
279  ct_dump_details(a, p);
280 
281  if (!nfnl_ct_test_bytes(ct, 0) ||
282  !nfnl_ct_test_packets(ct, 0) ||
283  !nfnl_ct_test_bytes(ct, 1) ||
284  !nfnl_ct_test_packets(ct, 1))
285  {
286  nl_dump_line(p, " Statistics are not available.\n");
287  nl_dump_line(p, " Please set sysctl net.netfilter.nf_conntrack_acct=1\n");
288  nl_dump_line(p, " (Require kernel 2.6.27)\n");
289  return;
290  }
291 
292  nl_dump_line(p, " # packets volume\n");
293  for (i=0; i<=1; i++) {
294  res = nl_cancel_down_bytes(nfnl_ct_get_bytes(ct, i), &unit);
295  packets = nfnl_ct_get_packets(ct, i);
296  nl_dump_line(p, " %s %10" PRIu64 " %7.2f %s\n", names[i], packets, res, unit);
297  }
298 }
299 
300 static uint64_t ct_compare(struct nl_object *_a, struct nl_object *_b,
301  uint64_t attrs, int flags)
302 {
303  struct nfnl_ct *a = (struct nfnl_ct *) _a;
304  struct nfnl_ct *b = (struct nfnl_ct *) _b;
305  uint64_t diff = 0;
306 
307 #define CT_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, CT_ATTR_##ATTR, a, b, EXPR)
308 #define CT_DIFF_VAL(ATTR, FIELD) CT_DIFF(ATTR, a->FIELD != b->FIELD)
309 #define CT_DIFF_ADDR(ATTR, FIELD) \
310  ((flags & LOOSE_COMPARISON) \
311  ? CT_DIFF(ATTR, nl_addr_cmp_prefix(a->FIELD, b->FIELD)) \
312  : CT_DIFF(ATTR, nl_addr_cmp(a->FIELD, b->FIELD)))
313 
314  diff |= CT_DIFF_VAL(FAMILY, ct_family);
315  diff |= CT_DIFF_VAL(PROTO, ct_proto);
316  diff |= CT_DIFF_VAL(TCP_STATE, ct_protoinfo.tcp.state);
317  diff |= CT_DIFF_VAL(TIMEOUT, ct_timeout);
318  diff |= CT_DIFF_VAL(MARK, ct_mark);
319  diff |= CT_DIFF_VAL(USE, ct_use);
320  diff |= CT_DIFF_VAL(ID, ct_id);
321  diff |= CT_DIFF_ADDR(ORIG_SRC, ct_orig.src);
322  diff |= CT_DIFF_ADDR(ORIG_DST, ct_orig.dst);
323  diff |= CT_DIFF_VAL(ORIG_SRC_PORT, ct_orig.proto.port.src);
324  diff |= CT_DIFF_VAL(ORIG_DST_PORT, ct_orig.proto.port.dst);
325  diff |= CT_DIFF_VAL(ORIG_ICMP_ID, ct_orig.proto.icmp.id);
326  diff |= CT_DIFF_VAL(ORIG_ICMP_TYPE, ct_orig.proto.icmp.type);
327  diff |= CT_DIFF_VAL(ORIG_ICMP_CODE, ct_orig.proto.icmp.code);
328  diff |= CT_DIFF_VAL(ORIG_PACKETS, ct_orig.packets);
329  diff |= CT_DIFF_VAL(ORIG_BYTES, ct_orig.bytes);
330  diff |= CT_DIFF_ADDR(REPL_SRC, ct_repl.src);
331  diff |= CT_DIFF_ADDR(REPL_DST, ct_repl.dst);
332  diff |= CT_DIFF_VAL(REPL_SRC_PORT, ct_repl.proto.port.src);
333  diff |= CT_DIFF_VAL(REPL_DST_PORT, ct_repl.proto.port.dst);
334  diff |= CT_DIFF_VAL(REPL_ICMP_ID, ct_repl.proto.icmp.id);
335  diff |= CT_DIFF_VAL(REPL_ICMP_TYPE, ct_repl.proto.icmp.type);
336  diff |= CT_DIFF_VAL(REPL_ICMP_CODE, ct_repl.proto.icmp.code);
337  diff |= CT_DIFF_VAL(REPL_PACKETS, ct_repl.packets);
338  diff |= CT_DIFF_VAL(REPL_BYTES, ct_repl.bytes);
339 
340  if (flags & LOOSE_COMPARISON)
341  diff |= CT_DIFF(STATUS, (a->ct_status ^ b->ct_status) &
342  b->ct_status_mask);
343  else
344  diff |= CT_DIFF(STATUS, a->ct_status != b->ct_status);
345 
346 #undef CT_DIFF
347 #undef CT_DIFF_VAL
348 #undef CT_DIFF_ADDR
349 
350  return diff;
351 }
352 
353 static const struct trans_tbl ct_attrs[] = {
354  __ADD(CT_ATTR_FAMILY, family),
355  __ADD(CT_ATTR_PROTO, proto),
356  __ADD(CT_ATTR_TCP_STATE, tcpstate),
357  __ADD(CT_ATTR_STATUS, status),
358  __ADD(CT_ATTR_TIMEOUT, timeout),
359  __ADD(CT_ATTR_MARK, mark),
360  __ADD(CT_ATTR_USE, use),
361  __ADD(CT_ATTR_ID, id),
362  __ADD(CT_ATTR_ORIG_SRC, origsrc),
363  __ADD(CT_ATTR_ORIG_DST, origdst),
364  __ADD(CT_ATTR_ORIG_SRC_PORT, origsrcport),
365  __ADD(CT_ATTR_ORIG_DST_PORT, origdstport),
366  __ADD(CT_ATTR_ORIG_ICMP_ID, origicmpid),
367  __ADD(CT_ATTR_ORIG_ICMP_TYPE, origicmptype),
368  __ADD(CT_ATTR_ORIG_ICMP_CODE, origicmpcode),
369  __ADD(CT_ATTR_ORIG_PACKETS, origpackets),
370  __ADD(CT_ATTR_ORIG_BYTES, origbytes),
371  __ADD(CT_ATTR_REPL_SRC, replysrc),
372  __ADD(CT_ATTR_REPL_DST, replydst),
373  __ADD(CT_ATTR_REPL_SRC_PORT, replysrcport),
374  __ADD(CT_ATTR_REPL_DST_PORT, replydstport),
375  __ADD(CT_ATTR_REPL_ICMP_ID, replyicmpid),
376  __ADD(CT_ATTR_REPL_ICMP_TYPE, replyicmptype),
377  __ADD(CT_ATTR_REPL_ICMP_CODE, replyicmpcode),
378  __ADD(CT_ATTR_REPL_PACKETS, replypackets),
379  __ADD(CT_ATTR_REPL_BYTES, replybytes),
380 };
381 
382 static char *ct_attrs2str(int attrs, char *buf, size_t len)
383 {
384  return __flags2str(attrs, buf, len, ct_attrs, ARRAY_SIZE(ct_attrs));
385 }
386 
387 /**
388  * @name Allocation/Freeing
389  * @{
390  */
391 
392 struct nfnl_ct *nfnl_ct_alloc(void)
393 {
394  return (struct nfnl_ct *) nl_object_alloc(&ct_obj_ops);
395 }
396 
397 void nfnl_ct_get(struct nfnl_ct *ct)
398 {
399  nl_object_get((struct nl_object *) ct);
400 }
401 
402 void nfnl_ct_put(struct nfnl_ct *ct)
403 {
404  nl_object_put((struct nl_object *) ct);
405 }
406 
407 /** @} */
408 
409 /**
410  * @name Attributes
411  * @{
412  */
413 
414 void nfnl_ct_set_family(struct nfnl_ct *ct, uint8_t family)
415 {
416  ct->ct_family = family;
417  ct->ce_mask |= CT_ATTR_FAMILY;
418 }
419 
420 uint8_t nfnl_ct_get_family(const struct nfnl_ct *ct)
421 {
422  if (ct->ce_mask & CT_ATTR_FAMILY)
423  return ct->ct_family;
424  else
425  return AF_UNSPEC;
426 }
427 
428 void nfnl_ct_set_proto(struct nfnl_ct *ct, uint8_t proto)
429 {
430  ct->ct_proto = proto;
431  ct->ce_mask |= CT_ATTR_PROTO;
432 }
433 
434 int nfnl_ct_test_proto(const struct nfnl_ct *ct)
435 {
436  return !!(ct->ce_mask & CT_ATTR_PROTO);
437 }
438 
439 uint8_t nfnl_ct_get_proto(const struct nfnl_ct *ct)
440 {
441  return ct->ct_proto;
442 }
443 
444 void nfnl_ct_set_tcp_state(struct nfnl_ct *ct, uint8_t state)
445 {
446  ct->ct_protoinfo.tcp.state = state;
447  ct->ce_mask |= CT_ATTR_TCP_STATE;
448 }
449 
450 int nfnl_ct_test_tcp_state(const struct nfnl_ct *ct)
451 {
452  return !!(ct->ce_mask & CT_ATTR_TCP_STATE);
453 }
454 
455 uint8_t nfnl_ct_get_tcp_state(const struct nfnl_ct *ct)
456 {
457  return ct->ct_protoinfo.tcp.state;
458 }
459 
460 static const struct trans_tbl tcp_states[] = {
461  __ADD(TCP_CONNTRACK_NONE,NONE),
462  __ADD(TCP_CONNTRACK_SYN_SENT,SYN_SENT),
463  __ADD(TCP_CONNTRACK_SYN_RECV,SYN_RECV),
464  __ADD(TCP_CONNTRACK_ESTABLISHED,ESTABLISHED),
465  __ADD(TCP_CONNTRACK_FIN_WAIT,FIN_WAIT),
466  __ADD(TCP_CONNTRACK_CLOSE_WAIT,CLOSE_WAIT),
467  __ADD(TCP_CONNTRACK_LAST_ACK,LAST_ACK),
468  __ADD(TCP_CONNTRACK_TIME_WAIT,TIME_WAIT),
469  __ADD(TCP_CONNTRACK_CLOSE,CLOSE),
470  __ADD(TCP_CONNTRACK_LISTEN,LISTEN),
471 };
472 
473 char *nfnl_ct_tcp_state2str(uint8_t state, char *buf, size_t len)
474 {
475  return __type2str(state, buf, len, tcp_states, ARRAY_SIZE(tcp_states));
476 }
477 
478 int nfnl_ct_str2tcp_state(const char *name)
479 {
480  return __str2type(name, tcp_states, ARRAY_SIZE(tcp_states));
481 }
482 
483 void nfnl_ct_set_status(struct nfnl_ct *ct, uint32_t status)
484 {
485  ct->ct_status_mask |= status;
486  ct->ct_status |= status;
487  ct->ce_mask |= CT_ATTR_STATUS;
488 }
489 
490 void nfnl_ct_unset_status(struct nfnl_ct *ct, uint32_t status)
491 {
492  ct->ct_status_mask |= status;
493  ct->ct_status &= ~status;
494  ct->ce_mask |= CT_ATTR_STATUS;
495 }
496 
497 int nfnl_ct_test_status(const struct nfnl_ct *ct)
498 {
499  return !!(ct->ce_mask & CT_ATTR_STATUS);
500 }
501 
502 uint32_t nfnl_ct_get_status(const struct nfnl_ct *ct)
503 {
504  return ct->ct_status;
505 }
506 
507 static const struct trans_tbl status_flags[] = {
508  __ADD(IPS_EXPECTED, expected),
509  __ADD(IPS_SEEN_REPLY, seen_reply),
510  __ADD(IPS_ASSURED, assured),
511  __ADD(IPS_CONFIRMED, confirmed),
512  __ADD(IPS_SRC_NAT, snat),
513  __ADD(IPS_DST_NAT, dnat),
514  __ADD(IPS_SEQ_ADJUST, seqadjust),
515  __ADD(IPS_SRC_NAT_DONE, snat_done),
516  __ADD(IPS_DST_NAT_DONE, dnat_done),
517  __ADD(IPS_DYING, dying),
518  __ADD(IPS_FIXED_TIMEOUT, fixed_timeout),
519 };
520 
521 char * nfnl_ct_status2str(int flags, char *buf, size_t len)
522 {
523  return __flags2str(flags, buf, len, status_flags,
524  ARRAY_SIZE(status_flags));
525 }
526 
527 int nfnl_ct_str2status(const char *name)
528 {
529  return __str2flags(name, status_flags, ARRAY_SIZE(status_flags));
530 }
531 
532 void nfnl_ct_set_timeout(struct nfnl_ct *ct, uint32_t timeout)
533 {
534  ct->ct_timeout = timeout;
535  ct->ce_mask |= CT_ATTR_TIMEOUT;
536 }
537 
538 int nfnl_ct_test_timeout(const struct nfnl_ct *ct)
539 {
540  return !!(ct->ce_mask & CT_ATTR_TIMEOUT);
541 }
542 
543 uint32_t nfnl_ct_get_timeout(const struct nfnl_ct *ct)
544 {
545  return ct->ct_timeout;
546 }
547 
548 void nfnl_ct_set_mark(struct nfnl_ct *ct, uint32_t mark)
549 {
550  ct->ct_mark = mark;
551  ct->ce_mask |= CT_ATTR_MARK;
552 }
553 
554 int nfnl_ct_test_mark(const struct nfnl_ct *ct)
555 {
556  return !!(ct->ce_mask & CT_ATTR_MARK);
557 }
558 
559 uint32_t nfnl_ct_get_mark(const struct nfnl_ct *ct)
560 {
561  return ct->ct_mark;
562 }
563 
564 void nfnl_ct_set_use(struct nfnl_ct *ct, uint32_t use)
565 {
566  ct->ct_use = use;
567  ct->ce_mask |= CT_ATTR_USE;
568 }
569 
570 int nfnl_ct_test_use(const struct nfnl_ct *ct)
571 {
572  return !!(ct->ce_mask & CT_ATTR_USE);
573 }
574 
575 uint32_t nfnl_ct_get_use(const struct nfnl_ct *ct)
576 {
577  return ct->ct_use;
578 }
579 
580 void nfnl_ct_set_id(struct nfnl_ct *ct, uint32_t id)
581 {
582  ct->ct_id = id;
583  ct->ce_mask |= CT_ATTR_ID;
584 }
585 
586 int nfnl_ct_test_id(const struct nfnl_ct *ct)
587 {
588  return !!(ct->ce_mask & CT_ATTR_ID);
589 }
590 
591 uint32_t nfnl_ct_get_id(const struct nfnl_ct *ct)
592 {
593  return ct->ct_id;
594 }
595 
596 void nfnl_ct_set_zone(struct nfnl_ct *ct, uint16_t zone)
597 {
598  ct->ct_zone = zone;
599  ct->ce_mask |= CT_ATTR_ZONE;
600 }
601 
602 int nfnl_ct_test_zone(const struct nfnl_ct *ct)
603 {
604  return !!(ct->ce_mask & CT_ATTR_ZONE);
605 }
606 
607 uint16_t nfnl_ct_get_zone(const struct nfnl_ct *ct)
608 {
609  return ct->ct_zone;
610 }
611 
612 static int ct_set_addr(struct nfnl_ct *ct, struct nl_addr *addr,
613  int attr, struct nl_addr ** ct_addr)
614 {
615  if (ct->ce_mask & CT_ATTR_FAMILY) {
616  if (addr->a_family != ct->ct_family)
617  return -NLE_AF_MISMATCH;
618  } else
619  nfnl_ct_set_family(ct, addr->a_family);
620 
621  if (*ct_addr)
622  nl_addr_put(*ct_addr);
623 
624  nl_addr_get(addr);
625  *ct_addr = addr;
626  ct->ce_mask |= attr;
627 
628  return 0;
629 }
630 
631 int nfnl_ct_set_src(struct nfnl_ct *ct, int repl, struct nl_addr *addr)
632 {
633  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
634  int attr = repl ? CT_ATTR_REPL_SRC : CT_ATTR_ORIG_SRC;
635  return ct_set_addr(ct, addr, attr, &dir->src);
636 }
637 
638 int nfnl_ct_set_dst(struct nfnl_ct *ct, int repl, struct nl_addr *addr)
639 {
640  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
641  int attr = repl ? CT_ATTR_REPL_DST : CT_ATTR_ORIG_DST;
642  return ct_set_addr(ct, addr, attr, &dir->dst);
643 }
644 
645 struct nl_addr *nfnl_ct_get_src(const struct nfnl_ct *ct, int repl)
646 {
647  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
648  int attr = repl ? CT_ATTR_REPL_SRC : CT_ATTR_ORIG_SRC;
649  if (!(ct->ce_mask & attr))
650  return NULL;
651  return dir->src;
652 }
653 
654 struct nl_addr *nfnl_ct_get_dst(const struct nfnl_ct *ct, int repl)
655 {
656  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
657  int attr = repl ? CT_ATTR_REPL_DST : CT_ATTR_ORIG_DST;
658  if (!(ct->ce_mask & attr))
659  return NULL;
660  return dir->dst;
661 }
662 
663 void nfnl_ct_set_src_port(struct nfnl_ct *ct, int repl, uint16_t port)
664 {
665  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
666  int attr = repl ? CT_ATTR_REPL_SRC_PORT : CT_ATTR_ORIG_SRC_PORT;
667 
668  dir->proto.port.src = port;
669  ct->ce_mask |= attr;
670 }
671 
672 int nfnl_ct_test_src_port(const struct nfnl_ct *ct, int repl)
673 {
674  int attr = repl ? CT_ATTR_REPL_SRC_PORT : CT_ATTR_ORIG_SRC_PORT;
675  return !!(ct->ce_mask & attr);
676 }
677 
678 uint16_t nfnl_ct_get_src_port(const struct nfnl_ct *ct, int repl)
679 {
680  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
681 
682  return dir->proto.port.src;
683 }
684 
685 void nfnl_ct_set_dst_port(struct nfnl_ct *ct, int repl, uint16_t port)
686 {
687  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
688  int attr = repl ? CT_ATTR_REPL_DST_PORT : CT_ATTR_ORIG_DST_PORT;
689 
690  dir->proto.port.dst = port;
691  ct->ce_mask |= attr;
692 }
693 
694 int nfnl_ct_test_dst_port(const struct nfnl_ct *ct, int repl)
695 {
696  int attr = repl ? CT_ATTR_REPL_DST_PORT : CT_ATTR_ORIG_DST_PORT;
697  return !!(ct->ce_mask & attr);
698 }
699 
700 uint16_t nfnl_ct_get_dst_port(const struct nfnl_ct *ct, int repl)
701 {
702  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
703 
704  return dir->proto.port.dst;
705 }
706 
707 void nfnl_ct_set_icmp_id(struct nfnl_ct *ct, int repl, uint16_t id)
708 {
709  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
710  int attr = repl ? CT_ATTR_REPL_ICMP_ID : CT_ATTR_ORIG_ICMP_ID;
711 
712  dir->proto.icmp.id = id;
713  ct->ce_mask |= attr;
714 }
715 
716 int nfnl_ct_test_icmp_id(const struct nfnl_ct *ct, int repl)
717 {
718  int attr = repl ? CT_ATTR_REPL_ICMP_ID : CT_ATTR_ORIG_ICMP_ID;
719  return !!(ct->ce_mask & attr);
720 }
721 
722 uint16_t nfnl_ct_get_icmp_id(const struct nfnl_ct *ct, int repl)
723 {
724  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
725 
726  return dir->proto.icmp.id;
727 }
728 
729 void nfnl_ct_set_icmp_type(struct nfnl_ct *ct, int repl, uint8_t type)
730 {
731  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
732  int attr = repl ? CT_ATTR_REPL_ICMP_TYPE : CT_ATTR_ORIG_ICMP_TYPE;
733 
734  dir->proto.icmp.type = type;
735  ct->ce_mask |= attr;
736 }
737 
738 int nfnl_ct_test_icmp_type(const struct nfnl_ct *ct, int repl)
739 {
740  int attr = repl ? CT_ATTR_REPL_ICMP_TYPE : CT_ATTR_ORIG_ICMP_TYPE;
741  return !!(ct->ce_mask & attr);
742 }
743 
744 uint8_t nfnl_ct_get_icmp_type(const struct nfnl_ct *ct, int repl)
745 {
746  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
747 
748  return dir->proto.icmp.type;
749 }
750 
751 void nfnl_ct_set_icmp_code(struct nfnl_ct *ct, int repl, uint8_t code)
752 {
753  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
754  int attr = repl ? CT_ATTR_REPL_ICMP_CODE : CT_ATTR_ORIG_ICMP_CODE;
755 
756  dir->proto.icmp.code = code;
757  ct->ce_mask |= attr;
758 }
759 
760 int nfnl_ct_test_icmp_code(const struct nfnl_ct *ct, int repl)
761 {
762  int attr = repl ? CT_ATTR_REPL_ICMP_CODE : CT_ATTR_ORIG_ICMP_CODE;
763  return !!(ct->ce_mask & attr);
764 }
765 
766 uint8_t nfnl_ct_get_icmp_code(const struct nfnl_ct *ct, int repl)
767 {
768  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
769 
770  return dir->proto.icmp.code;
771 }
772 
773 void nfnl_ct_set_packets(struct nfnl_ct *ct, int repl, uint64_t packets)
774 {
775  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
776  int attr = repl ? CT_ATTR_REPL_PACKETS : CT_ATTR_ORIG_PACKETS;
777 
778  dir->packets = packets;
779  ct->ce_mask |= attr;
780 }
781 
782 int nfnl_ct_test_packets(const struct nfnl_ct *ct, int repl)
783 {
784  int attr = repl ? CT_ATTR_REPL_PACKETS : CT_ATTR_ORIG_PACKETS;
785  return !!(ct->ce_mask & attr);
786 }
787 
788 uint64_t nfnl_ct_get_packets(const struct nfnl_ct *ct, int repl)
789 {
790  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
791 
792  return dir->packets;
793 }
794 
795 void nfnl_ct_set_bytes(struct nfnl_ct *ct, int repl, uint64_t bytes)
796 {
797  struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
798  int attr = repl ? CT_ATTR_REPL_BYTES : CT_ATTR_ORIG_BYTES;
799 
800  dir->bytes = bytes;
801  ct->ce_mask |= attr;
802 }
803 
804 int nfnl_ct_test_bytes(const struct nfnl_ct *ct, int repl)
805 {
806  int attr = repl ? CT_ATTR_REPL_BYTES : CT_ATTR_ORIG_BYTES;
807  return !!(ct->ce_mask & attr);
808 }
809 
810 uint64_t nfnl_ct_get_bytes(const struct nfnl_ct *ct, int repl)
811 {
812  const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
813 
814  return dir->bytes;
815 }
816 
817 void nfnl_ct_set_timestamp(struct nfnl_ct *ct, uint64_t start, uint64_t stop)
818 {
819  ct->ct_tstamp.start = start;
820  ct->ct_tstamp.stop = stop;
821  ct->ce_mask |= CT_ATTR_TIMESTAMP;
822 }
823 
824 int nfnl_ct_test_timestamp(const struct nfnl_ct *ct)
825 {
826  return !!(ct->ce_mask & CT_ATTR_TIMESTAMP);
827 }
828 
829 const struct nfnl_ct_timestamp *nfnl_ct_get_timestamp(const struct nfnl_ct *ct)
830 {
831  return &ct->ct_tstamp;
832 }
833 
834 /** @} */
835 
836 struct nl_object_ops ct_obj_ops = {
837  .oo_name = "netfilter/ct",
838  .oo_size = sizeof(struct nfnl_ct),
839  .oo_free_data = ct_free_data,
840  .oo_clone = ct_clone,
841  .oo_dump = {
842  [NL_DUMP_LINE] = ct_dump_line,
843  [NL_DUMP_DETAILS] = ct_dump_details,
844  [NL_DUMP_STATS] = ct_dump_stats,
845  },
846  .oo_compare = ct_compare,
847  .oo_attrs2str = ct_attrs2str,
848 };
849 
850 /** @} */
struct nl_addr * nl_addr_clone(const struct nl_addr *addr)
Clone existing abstract address object.
Definition: addr.c:471
Dump object briefly on one line.
Definition: types.h:22
void nl_new_line(struct nl_dump_params *params)
Handle a new line while dumping.
Definition: utils.c:912
int nl_addr_cmp(const struct nl_addr *a, const struct nl_addr *b)
Compare abstract addresses.
Definition: addr.c:563
struct nl_object * nl_object_alloc(struct nl_object_ops *ops)
Allocate a new object of kind specified by the operations handle.
Definition: object.c:54
void nl_object_get(struct nl_object *obj)
Acquire a reference on a object.
Definition: object.c:204
char * nl_msec2str(uint64_t msec, char *buf, size_t len)
Convert milliseconds to a character string.
Definition: utils.c:594
struct nl_addr * nl_addr_get(struct nl_addr *addr)
Increase the reference counter of an abstract address.
Definition: addr.c:501
Dump all attributes but no statistics.
Definition: types.h:23
double nl_cancel_down_bytes(unsigned long long l, char **unit)
Cancel down a byte counter.
Definition: utils.c:169
void nl_object_put(struct nl_object *obj)
Release a reference from an object.
Definition: object.c:215
void nl_addr_put(struct nl_addr *addr)
Decrease the reference counter of an abstract address.
Definition: addr.c:517
Dumping parameters.
Definition: types.h:33
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition: utils.c:961
Dump all attributes including statistics.
Definition: types.h:24
char * nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)
Convert abstract address object to character string.
Definition: addr.c:963