5 * Copyright (C) 2007-2010 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
31 #include <sys/errno.h>
32 #include <sys/socket.h>
35 #include <linux/netfilter_ipv4/ip_tables.h>
40 static const char *hooknames[] = {
41 [NF_IP_PRE_ROUTING] = "PREROUTING",
42 [NF_IP_LOCAL_IN] = "INPUT",
43 [NF_IP_FORWARD] = "FORWARD",
44 [NF_IP_LOCAL_OUT] = "OUTPUT",
45 [NF_IP_POST_ROUTING] = "POSTROUTING",
48 #define LABEL_ACCEPT "ACCEPT"
49 #define LABEL_DROP "DROP"
50 #define LABEL_QUEUE "QUEUE"
51 #define LABEL_RETURN "RETURN"
53 /* fn returns 0 to continue iteration */
54 #define _XT_ENTRY_ITERATE_CONTINUE(type, entries, size, n, fn, args...) \
61 for (__i = 0, __n = 0; __i < (size); \
62 __i += __entry->next_offset, __n++) { \
63 __entry = (void *)(entries) + __i; \
67 __ret = fn(__entry, ## args); \
74 /* fn returns 0 to continue iteration */
75 #define _XT_ENTRY_ITERATE(type, entries, size, fn, args...) \
76 _XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args)
78 #define ENTRY_ITERATE(entries, size, fn, args...) \
79 _XT_ENTRY_ITERATE(struct ipt_entry, entries, size, fn, ## args)
81 #define MIN_ALIGN (__alignof__(struct ipt_entry))
83 #define ALIGN(s) (((s) + ((MIN_ALIGN)-1)) & ~((MIN_ALIGN)-1))
85 struct ipt_error_target {
86 struct xt_entry_target t;
87 char error[IPT_TABLE_MAXNAMELEN];
90 struct connman_iptables_entry {
93 struct ipt_entry *entry;
96 struct connman_iptables {
99 struct ipt_getinfo *info;
100 struct ipt_get_entries *blob_entries;
102 unsigned int num_entries;
103 unsigned int old_entries;
109 static GHashTable *table_hash = NULL;
111 static struct ipt_entry *get_entry(struct connman_iptables *table,
114 return (struct ipt_entry *)((char *)table->blob_entries->entrytable +
118 static int is_hook_entry(struct connman_iptables *table,
119 struct ipt_entry *entry)
123 for (i = 0; i < NF_INET_NUMHOOKS; i++) {
124 if ((table->info->valid_hooks & (1 << i))
125 && get_entry(table, table->info->hook_entry[i]) == entry)
132 static unsigned long entry_to_offset(struct connman_iptables *table,
133 struct ipt_entry *entry)
135 return (void *)entry - (void *)table->blob_entries->entrytable;
138 static int target_to_verdict(char *target_name)
140 if (!strcmp(target_name, LABEL_ACCEPT))
141 return -NF_ACCEPT - 1;
143 if (!strcmp(target_name, LABEL_DROP))
146 if (!strcmp(target_name, LABEL_QUEUE))
147 return -NF_QUEUE - 1;
149 if (!strcmp(target_name, LABEL_RETURN))
155 static gboolean is_builtin_target(char *target_name)
157 if (!strcmp(target_name, LABEL_ACCEPT) ||
158 !strcmp(target_name, LABEL_DROP) ||
159 !strcmp(target_name, LABEL_QUEUE) ||
160 !strcmp(target_name, LABEL_RETURN))
166 static gboolean is_jump(struct connman_iptables_entry *e)
168 struct xt_entry_target *target;
170 target = ipt_get_target(e->entry);
172 if (!strcmp(target->u.user.name, IPT_STANDARD_TARGET)) {
173 struct xt_standard_target *t;
175 t = (struct xt_standard_target *)target;
177 switch (t->verdict) {
193 static gboolean is_chain(struct connman_iptables *table,
194 struct connman_iptables_entry *e)
197 struct ipt_entry *entry;
198 struct xt_entry_target *target;
201 builtin = is_hook_entry(table, entry);
205 target = ipt_get_target(entry);
206 if (!strcmp(target->u.user.name, IPT_ERROR_TARGET))
212 static GList *find_chain_head(struct connman_iptables *table,
216 struct connman_iptables_entry *head;
217 struct ipt_entry *entry;
218 struct xt_entry_target *target;
221 for (list = table->entries; list; list = list->next) {
226 builtin = is_hook_entry(table, entry);
227 if (builtin >= 0 && !strcmp(hooknames[builtin], chain_name))
230 /* User defined chain */
231 target = ipt_get_target(entry);
232 if (!strcmp(target->u.user.name, IPT_ERROR_TARGET) &&
233 !strcmp((char *)target->data, chain_name))
240 static GList *find_chain_tail(struct connman_iptables *table,
243 GList *chain_head, *list;
244 struct connman_iptables_entry *head, *tail;
245 struct ipt_entry *entry;
246 struct xt_entry_target *target;
249 /* First we look for the head */
250 for (list = table->entries; list; list = list->next) {
255 builtin = is_hook_entry(table, entry);
256 if (builtin >= 0 && !strcmp(hooknames[builtin], chain_name))
259 /* User defined chain */
260 target = ipt_get_target(entry);
261 if (!strcmp(target->u.user.name, IPT_ERROR_TARGET) &&
262 !strcmp((char *)target->data, chain_name))
271 /* Then we look for the next chain */
272 for (list = chain_head->next; list; list = list->next) {
276 if (is_chain(table, tail))
280 /* Nothing found, we return the table end */
281 return g_list_last(table->entries);
285 static void update_offsets(struct connman_iptables *table)
288 struct connman_iptables_entry *entry, *prev_entry;
290 for (list = table->entries; list; list = list->next) {
293 if (list == table->entries) {
300 prev_entry = prev->data;
302 entry->offset = prev_entry->offset +
303 prev_entry->entry->next_offset;
307 static int iptables_add_entry(struct connman_iptables *table,
308 struct ipt_entry *entry, GList *before)
311 struct connman_iptables_entry *e, *tmp, *entry_before;
312 struct xt_standard_target *t;
317 e = g_try_malloc0(sizeof(struct connman_iptables_entry));
323 table->entries = g_list_insert_before(table->entries, before, e);
324 table->num_entries++;
325 table->size += entry->next_offset;
327 if (before == NULL) {
328 e->offset = table->size - entry->next_offset;
333 entry_before = before->data;
336 * We've just insterted a new entry. All references before it
337 * should be bumped accordingly.
339 for (list = table->entries; list != before; list = list->next) {
345 t = (struct xt_standard_target *)ipt_get_target(tmp->entry);
347 if (t->verdict >= entry_before->offset)
348 t->verdict += entry->next_offset;
351 update_offsets(table);
356 static int iptables_add_chain(struct connman_iptables *table,
360 struct ipt_entry *entry_head;
361 struct ipt_entry *entry_return;
362 struct ipt_error_target *error;
363 struct ipt_standard_target *standard;
364 u_int16_t entry_head_size, entry_return_size;
366 last = g_list_last(table->entries);
369 * An empty chain is composed of:
370 * - A head entry, with no match and an error target.
371 * The error target data is the chain name.
372 * - A tail entry, with no match and a standard target.
373 * The standard target verdict is XT_RETURN (return to the
378 entry_head_size = sizeof(struct ipt_entry) +
379 sizeof(struct ipt_error_target);
380 entry_head = g_try_malloc0(entry_head_size);
381 if (entry_head == NULL)
384 memset(entry_head, 0, entry_head_size);
386 entry_head->target_offset = sizeof(struct ipt_entry);
387 entry_head->next_offset = entry_head_size;
389 error = (struct ipt_error_target *) entry_head->elems;
390 strcpy(error->t.u.user.name, IPT_ERROR_TARGET);
391 error->t.u.user.target_size = ALIGN(sizeof(struct ipt_error_target));
392 strcpy(error->error, name);
394 if (iptables_add_entry(table, entry_head, last) < 0)
398 entry_return_size = sizeof(struct ipt_entry) +
399 sizeof(struct ipt_standard_target);
400 entry_return = g_try_malloc0(entry_return_size);
401 if (entry_return == NULL)
404 memset(entry_return, 0, entry_return_size);
406 entry_return->target_offset = sizeof(struct ipt_entry);
407 entry_return->next_offset = entry_return_size;
409 standard = (struct ipt_standard_target *) entry_return->elems;
410 standard->target.u.user.target_size =
411 ALIGN(sizeof(struct ipt_standard_target));
412 standard->verdict = XT_RETURN;
414 if (iptables_add_entry(table, entry_return, last) < 0)
421 g_free(entry_return);
426 static struct ipt_entry *
427 new_rule(struct connman_iptables *table, struct ipt_ip *ip,
428 char *target_name, struct xtables_target *xt_t,
429 char *match_name, struct xtables_match *xt_m)
431 struct ipt_entry *new_entry;
432 size_t match_size, target_size;
433 int is_builtin = is_builtin_target(target_name);
436 match_size = xt_m->m->u.match_size;
441 target_size = ALIGN(xt_t->t->u.target_size);
443 target_size = ALIGN(sizeof(struct xt_standard_target));
445 new_entry = g_try_malloc0(sizeof(struct ipt_entry) + target_size +
447 if (new_entry == NULL)
450 memcpy(&new_entry->ip, ip, sizeof(struct ipt_ip));
452 new_entry->target_offset = sizeof(struct ipt_entry) + match_size;
453 new_entry->next_offset = sizeof(struct ipt_entry) + target_size +
456 struct xt_entry_match *entry_match;
458 entry_match = (struct xt_entry_match *)new_entry->elems;
459 memcpy(entry_match, xt_m->m, match_size);
463 struct xt_entry_target *entry_target;
466 struct xt_standard_target *target;
468 target = (struct xt_standard_target *)(xt_t->t);
469 strcpy(target->target.u.user.name, IPT_STANDARD_TARGET);
470 target->verdict = target_to_verdict(target_name);
473 entry_target = ipt_get_target(new_entry);
474 memcpy(entry_target, xt_t->t, target_size);
476 struct connman_iptables_entry *target_rule;
477 struct xt_standard_target *target;
481 * This is a user defined target, i.e. a chain jump.
482 * We search for the chain head, and the target verdict
483 * is the first rule's offset on this chain.
484 * The offset is from the beginning of the table.
487 chain_head = find_chain_head(table, target_name);
488 if (chain_head == NULL || chain_head->next == NULL) {
493 target_rule = chain_head->next->data;
495 target = (struct xt_standard_target *)ipt_get_target(new_entry);
496 strcpy(target->target.u.user.name, IPT_STANDARD_TARGET);
497 target->target.u.user.target_size = target_size;
498 target->verdict = target_rule->offset;
505 iptables_add_rule(struct connman_iptables *table,
506 struct ipt_ip *ip, char *chain_name,
507 char *target_name, struct xtables_target *xt_t,
508 char *match_name, struct xtables_match *xt_m)
511 struct ipt_entry *new_entry;
513 chain_tail = find_chain_tail(table, chain_name);
514 if (chain_tail == NULL)
517 new_entry = new_rule(table, ip,
520 if (new_entry == NULL)
523 return iptables_add_entry(table, new_entry, chain_tail->prev);
526 static struct ipt_replace *
527 iptables_blob(struct connman_iptables *table)
529 struct ipt_replace *r;
531 struct connman_iptables_entry *e;
532 unsigned char *entry_index;
534 r = g_try_malloc0(sizeof(struct ipt_replace) + table->size);
538 memset(r, 0, sizeof(*r) + table->size);
540 r->counters = g_try_malloc0(sizeof(struct xt_counters)
541 * table->num_entries);
542 if (r->counters == NULL) {
547 strcpy(r->name, table->info->name);
548 r->num_entries = table->num_entries;
549 r->size = table->size;
551 r->num_counters = table->old_entries;
552 r->valid_hooks = table->info->valid_hooks;
554 memcpy(r->hook_entry, table->info->hook_entry,
555 sizeof(table->info->hook_entry));
556 memcpy(r->underflow, table->info->underflow,
557 sizeof(table->info->underflow));
559 entry_index = (unsigned char *)r->entries;
560 for (list = table->entries; list; list = list->next) {
563 memcpy(entry_index, e->entry, e->entry->next_offset);
564 entry_index += e->entry->next_offset;
570 static void dump_ip(struct ipt_entry *entry)
572 struct ipt_ip *ip = &entry->ip;
573 char ip_string[INET6_ADDRSTRLEN];
574 char ip_mask[INET6_ADDRSTRLEN];
576 if (strlen(ip->iniface))
577 connman_info("\tin %s", ip->iniface);
579 if (strlen(ip->outiface))
580 connman_info("\tout %s", ip->outiface);
582 if (inet_ntop(AF_INET, &ip->src, ip_string, INET6_ADDRSTRLEN) != NULL &&
583 inet_ntop(AF_INET, &ip->smsk,
584 ip_mask, INET6_ADDRSTRLEN) != NULL)
585 connman_info("\tsrc %s/%s", ip_string, ip_mask);
587 if (inet_ntop(AF_INET, &ip->dst, ip_string, INET6_ADDRSTRLEN) != NULL &&
588 inet_ntop(AF_INET, &ip->dmsk,
589 ip_mask, INET6_ADDRSTRLEN) != NULL)
590 connman_info("\tdst %s/%s", ip_string, ip_mask);
593 static void dump_target(struct connman_iptables *table,
594 struct ipt_entry *entry)
597 struct xtables_target *xt_t;
598 struct xt_entry_target *target;
600 target = ipt_get_target(entry);
602 if (!strcmp(target->u.user.name, IPT_STANDARD_TARGET)) {
603 struct xt_standard_target *t;
605 t = (struct xt_standard_target *)target;
607 switch (t->verdict) {
609 connman_info("\ttarget RETURN");
613 connman_info("\ttarget ACCEPT");
617 connman_info("\ttarget DROP");
621 connman_info("\ttarget QUEUE");
625 connman_info("\ttarget STOP");
629 connman_info("\tJUMP @%p (0x%x)",
630 (char*)table->blob_entries->entrytable +
631 t->verdict, t->verdict);
635 xt_t = xtables_find_target(IPT_STANDARD_TARGET,
636 XTF_LOAD_MUST_SUCCEED);
638 if(xt_t->print != NULL)
639 xt_t->print(NULL, target, 1);
641 xt_t = xtables_find_target(target->u.user.name, XTF_TRY_LOAD);
643 connman_info("\ttarget %s", target->u.user.name);
647 if(xt_t->print != NULL) {
648 connman_info("\ttarget ");
649 xt_t->print(NULL, target, 1);
654 static void dump_match(struct connman_iptables *table, struct ipt_entry *entry)
656 struct xtables_match *xt_m;
657 struct xt_entry_match *match;
659 if (entry->elems == (unsigned char *)entry + entry->target_offset)
662 match = (struct xt_entry_match *) entry->elems;
664 if (!strlen(match->u.user.name))
667 xt_m = xtables_find_match(match->u.user.name, XTF_TRY_LOAD, NULL);
671 if(xt_m->print != NULL) {
672 connman_info("\tmatch ");
673 xt_m->print(NULL, match, 1);
679 connman_info("\tmatch %s", match->u.user.name);
683 static int dump_entry(struct ipt_entry *entry,
684 struct connman_iptables *table)
686 struct xt_entry_target *target;
690 offset = (char *)entry - (char *)table->blob_entries->entrytable;
691 target = ipt_get_target(entry);
692 builtin = is_hook_entry(table, entry);
694 if (entry_to_offset(table, entry) + entry->next_offset ==
695 table->blob_entries->size) {
696 connman_info("End of CHAIN 0x%x", offset);
700 if (!strcmp(target->u.user.name, IPT_ERROR_TARGET)) {
701 connman_info("USER CHAIN (%s) %p match %p target %p size %d",
702 target->data, entry, entry->elems,
703 (char *)entry + entry->target_offset,
707 } else if (builtin >= 0) {
708 connman_info("CHAIN (%s) %p match %p target %p size %d",
709 hooknames[builtin], entry, entry->elems,
710 (char *)entry + entry->target_offset,
713 connman_info("RULE %p match %p target %p size %d", entry,
715 (char *)entry + entry->target_offset,
719 dump_match(table, entry);
720 dump_target(table, entry);
726 static void iptables_dump(struct connman_iptables *table)
728 connman_info("%s valid_hooks=0x%08x, num_entries=%u, size=%u",
730 table->info->valid_hooks, table->info->num_entries,
733 ENTRY_ITERATE(table->blob_entries->entrytable,
734 table->blob_entries->size,
739 static int iptables_get_entries(struct connman_iptables *table)
741 socklen_t entry_size;
743 entry_size = sizeof(struct ipt_get_entries) + table->info->size;
745 return getsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_GET_ENTRIES,
746 table->blob_entries, &entry_size);
749 static int iptables_replace(struct connman_iptables *table,
750 struct ipt_replace *r)
752 return setsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_SET_REPLACE, r,
753 sizeof(*r) + r->size);
756 static int add_entry(struct ipt_entry *entry, struct connman_iptables *table)
758 struct ipt_entry *new_entry;
760 new_entry = g_try_malloc0(entry->next_offset);
761 if (new_entry == NULL)
764 memcpy(new_entry, entry, entry->next_offset);
766 return iptables_add_entry(table, new_entry, NULL);
769 static void table_cleanup(struct connman_iptables *table)
772 struct connman_iptables_entry *entry;
774 close(table->ipt_sock);
776 for (list = table->entries; list; list = list->next) {
779 g_free(entry->entry);
782 g_list_free(table->entries);
784 g_free(table->blob_entries);
788 static struct connman_iptables *iptables_init(char *table_name)
790 struct connman_iptables *table;
793 table = g_hash_table_lookup(table_hash, table_name);
797 table = g_try_new0(struct connman_iptables, 1);
801 table->info = g_try_new0(struct ipt_getinfo, 1);
802 if (table->info == NULL)
805 table->ipt_sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
806 if (table->ipt_sock < 0)
809 s = sizeof(*table->info);
810 strcpy(table->info->name, table_name);
811 if (getsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_GET_INFO,
812 table->info, &s) < 0)
815 table->blob_entries = g_try_malloc0(sizeof(struct ipt_get_entries) +
817 if (table->blob_entries == NULL)
820 strcpy(table->blob_entries->name, table_name);
821 table->blob_entries->size = table->info->size;
823 if (iptables_get_entries(table) < 0)
826 table->num_entries = 0;
827 table->old_entries = table->info->num_entries;
830 ENTRY_ITERATE(table->blob_entries->entrytable,
831 table->blob_entries->size,
834 g_hash_table_insert(table_hash, table_name, table);
840 table_cleanup(table);
845 static struct option iptables_opts[] = {
846 {.name = "append", .has_arg = 1, .val = 'A'},
847 {.name = "list", .has_arg = 2, .val = 'L'},
848 {.name = "new-chain", .has_arg = 1, .val = 'N'},
849 {.name = "destination", .has_arg = 1, .val = 'd'},
850 {.name = "in-interface", .has_arg = 1, .val = 'i'},
851 {.name = "jump", .has_arg = 1, .val = 'j'},
852 {.name = "match", .has_arg = 1, .val = 'm'},
853 {.name = "out-interface", .has_arg = 1, .val = 'o'},
854 {.name = "source", .has_arg = 1, .val = 's'},
855 {.name = "table", .has_arg = 1, .val = 't'},
859 struct xtables_globals iptables_globals = {
861 .opts = iptables_opts,
862 .orig_opts = iptables_opts,
865 static int iptables_command(int argc, char *argv[])
867 struct connman_iptables *table;
868 struct xtables_match *xt_m;
869 struct xtables_target *xt_t;
871 char *table_name, *chain, *new_chain, *match_name, *target_name;
872 int c, ret, in_len, out_len;
874 gboolean dump, invert;
875 struct in_addr src, dst;
882 table_name = chain = new_chain = match_name = target_name = NULL;
883 memset(&ip, 0, sizeof(struct ipt_ip));
891 while ((c = getopt_long(argc, argv,
892 "-A:L::N:d:j:i:m:o:s:t:", iptables_globals.opts, NULL)) != -1) {
907 if (!inet_pton(AF_INET, optarg, &dst))
911 inet_pton(AF_INET, "255.255.255.255", &ip.dmsk);
916 in_len = strlen(optarg);
918 if (in_len + 1 > IFNAMSIZ)
921 strcpy(ip.iniface, optarg);
922 memset(ip.iniface_mask, 0xff, in_len + 1);
927 target_name = optarg;
928 xt_t = xtables_find_target(target_name, XTF_TRY_LOAD);
933 size = ALIGN(sizeof(struct ipt_entry_target)) +
936 xt_t->t = g_try_malloc0(size);
939 xt_t->t->u.target_size = size;
940 strcpy(xt_t->t->u.user.name, target_name);
941 xt_t->t->u.user.revision = xt_t->revision;
942 if (xt_t->init != NULL)
944 iptables_globals.opts =
945 xtables_merge_options(iptables_globals.opts,
947 &xt_t->option_offset);
948 if (iptables_globals.opts == NULL)
956 xt_m = xtables_find_match(optarg, XTF_LOAD_MUST_SUCCEED, NULL);
957 size = ALIGN(sizeof(struct ipt_entry_match)) +
959 xt_m->m = g_try_malloc0(size);
962 xt_m->m->u.match_size = size;
963 strcpy(xt_m->m->u.user.name, xt_m->name);
964 xt_m->m->u.user.revision = xt_m->revision;
965 if (xt_m->init != NULL)
967 if (xt_m != xt_m->next) {
968 iptables_globals.opts =
969 xtables_merge_options(iptables_globals.opts,
971 &xt_m->option_offset);
972 if (iptables_globals.opts == NULL)
979 out_len = strlen(optarg);
981 if (out_len + 1 > IFNAMSIZ)
984 strcpy(ip.outiface, optarg);
985 memset(ip.outiface_mask, 0xff, out_len + 1);
990 if (!inet_pton(AF_INET, optarg, &src))
994 inet_pton(AF_INET, "255.255.255.255", &ip.smsk);
1003 if (optarg[0] == '!' && optarg[1] == '\0') {
1009 connman_error("Invalid option");
1015 if (xt_t == NULL || xt_t->parse == NULL ||
1016 !xt_t->parse(c - xt_t->option_offset, argv, invert,
1017 &xt_t->tflags, NULL, &xt_t->t)) {
1018 if (xt_m == NULL || xt_m->parse == NULL)
1021 xt_m->parse(c - xt_m->option_offset, argv,
1022 invert, &xt_m->mflags, NULL, &xt_m->m);
1029 if (table_name == NULL)
1030 table_name = "filter";
1032 table = iptables_init(table_name);
1033 if (table == NULL) {
1039 iptables_dump(table);
1045 if (chain && new_chain) {
1051 DBG("New chain %s", new_chain);
1053 ret = iptables_add_chain(table, new_chain);
1058 if (target_name == NULL)
1061 DBG("Adding %s to %s (match %s)",
1062 target_name, chain, match_name);
1064 ret = iptables_add_rule(table, &ip, chain, target_name, xt_t,
1080 int __connman_iptables_command(const char *format, ...)
1082 char **argv, **arguments, *command;
1089 va_start(args, format);
1091 command = g_strdup_vprintf(format, args);
1095 if (command == NULL)
1098 arguments = g_strsplit_set(command, " ", -1);
1100 for (argc = 0; arguments[argc]; argc++);
1102 DBG("command %s argc %d", command, ++argc);
1104 argv = g_try_malloc0(argc * sizeof(char *));
1107 g_strfreev(arguments);
1111 argv[0] = "iptables";
1112 for (i = 1; i < argc; i++)
1113 argv[i] = arguments[i - 1];
1115 ret = iptables_command(argc, argv);
1118 g_strfreev(arguments);
1125 int __connman_iptables_commit(const char *table_name)
1127 struct connman_iptables *table;
1128 struct ipt_replace *repl;
1130 table = g_hash_table_lookup(table_hash, table_name);
1134 repl = iptables_blob(table);
1136 return iptables_replace(table, repl);
1139 static void remove_table(gpointer user_data)
1141 struct connman_iptables *table = user_data;
1143 table_cleanup(table);
1146 int __connman_iptables_init(void)
1150 table_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1151 NULL, remove_table);
1153 xtables_init_all(&iptables_globals, NFPROTO_IPV4);
1159 void __connman_iptables_cleanup(void)
1161 g_hash_table_destroy(table_hash);
1163 xtables_free_opts(1);