1 /* Code to save the ip6tables state, in human readable-form. */
2 /* Author: Andras Kis-Szabo <kisza@sch.bme.hu>
3 * Original code: iptables-save
4 * Authors: Paul 'Rusty' Russel <rusty@linuxcare.com.au> and
5 * Harald Welte <laforge@gnumonks.org>
6 * This code is distributed under the terms of GNU GPL v2
16 #include <arpa/inet.h>
17 #include "libiptc/libip6tc.h"
18 #include "ip6tables.h"
19 #include "ip6tables-multi.h"
21 #ifndef NO_SHARED_LIBS
25 static int show_binary = 0, show_counters = 0;
27 static const struct option options[] = {
28 {.name = "binary", .has_arg = false, .val = 'b'},
29 {.name = "counters", .has_arg = false, .val = 'c'},
30 {.name = "dump", .has_arg = false, .val = 'd'},
31 {.name = "table", .has_arg = true, .val = 't'},
36 /* Debugging prototype. */
37 static int for_each_table(int (*func)(const char *tablename))
40 FILE *procfile = NULL;
41 char tablename[IP6T_TABLE_MAXNAMELEN+1];
43 procfile = fopen("/proc/net/ip6_tables_names", "r");
45 exit_error(OTHER_PROBLEM,
46 "Unable to open /proc/net/ip6_tables_names: %s\n",
49 while (fgets(tablename, sizeof(tablename), procfile)) {
50 if (tablename[strlen(tablename) - 1] != '\n')
51 exit_error(OTHER_PROBLEM,
52 "Badly formed tablename `%s'\n",
54 tablename[strlen(tablename) - 1] = '\0';
55 ret &= func(tablename);
62 static int do_output(const char *tablename)
65 const char *chain = NULL;
68 return for_each_table(&do_output);
70 h = ip6tc_init(tablename);
72 exit_error(OTHER_PROBLEM, "Can't initialize: %s\n",
73 ip6tc_strerror(errno));
76 time_t now = time(NULL);
78 printf("# Generated by ip6tables-save v%s on %s",
79 XTABLES_VERSION, ctime(&now));
80 printf("*%s\n", tablename);
82 /* Dump out chain names first,
83 * thereby preventing dependency conflicts */
84 for (chain = ip6tc_first_chain(&h);
86 chain = ip6tc_next_chain(&h)) {
88 printf(":%s ", chain);
89 if (ip6tc_builtin(chain, h)) {
90 struct ip6t_counters count;
92 ip6tc_get_policy(chain, &count, &h));
93 printf("[%llu:%llu]\n", (unsigned long long)count.pcnt, (unsigned long long)count.bcnt);
100 for (chain = ip6tc_first_chain(&h);
102 chain = ip6tc_next_chain(&h)) {
103 const struct ip6t_entry *e;
106 e = ip6tc_first_rule(chain, &h);
108 print_rule(e, &h, chain, show_counters);
109 e = ip6tc_next_rule(e, &h);
115 printf("# Completed on %s", ctime(&now));
117 /* Binary, huh? OK. */
118 exit_error(OTHER_PROBLEM, "Binary NYI\n");
127 * :Chain name POLICY packets bytes
130 #ifdef IPTABLES_MULTI
131 int ip6tables_save_main(int argc, char *argv[])
133 int main(int argc, char *argv[])
136 const char *tablename = NULL;
139 program_name = "ip6tables-save";
140 program_version = XTABLES_VERSION;
142 lib_dir = getenv("XTABLES_LIBDIR");
143 if (lib_dir == NULL) {
144 lib_dir = getenv("IP6TABLES_LIB_DIR");
146 fprintf(stderr, "IP6TABLES_LIB_DIR is deprecated\n");
149 lib_dir = XTABLES_LIBDIR;
151 #ifdef NO_SHARED_LIBS
155 while ((c = getopt_long(argc, argv, "bcdt:", options, NULL)) != -1) {
166 /* Select specific table. */
170 do_output(tablename);
176 fprintf(stderr, "Unknown arguments found on commandline\n");
180 return !do_output(tablename);