Lines Matching defs:*
2 * shared library add-on to iptables to add TPROXY target support.
4 * Copyright (C) 2002-2008 BalaBit IT Ltd.
6 #include <stdio.h>
7 #include <limits.h>
8 #include <xtables.h>
9 #include <linux/netfilter/xt_TPROXY.h>
10 #include <arpa/inet.h>
12 enum {
13 P_PORT = 0,
14 P_ADDR,
15 P_MARK,
16 F_PORT = 1 << P_PORT,
17 F_ADDR = 1 << P_ADDR,
18 F_MARK = 1 << P_MARK,
21 #define s struct xt_tproxy_target_info
22 static const struct xt_option_entry tproxy_tg0_opts[] = {
23 {.name = "on-port", .id = P_PORT, .type = XTTYPE_PORT,
24 .flags = XTOPT_MAND | XTOPT_NBO | XTOPT_PUT, XTOPT_POINTER(s, lport)},
25 {.name = "on-ip", .id = P_ADDR, .type = XTTYPE_HOST},
26 {.name = "tproxy-mark", .id = P_MARK, .type = XTTYPE_MARKMASK32},
27 XTOPT_TABLEEND,
29 #undef s
30 #define s struct xt_tproxy_target_info_v1
31 static const struct xt_option_entry tproxy_tg1_opts[] = {
32 {.name = "on-port", .id = P_PORT, .type = XTTYPE_PORT,
33 .flags = XTOPT_MAND | XTOPT_NBO | XTOPT_PUT, XTOPT_POINTER(s, lport)},
34 {.name = "on-ip", .id = P_ADDR, .type = XTTYPE_HOST,
35 .flags = XTOPT_PUT, XTOPT_POINTER(s, laddr)},
36 {.name = "tproxy-mark", .id = P_MARK, .type = XTTYPE_MARKMASK32},
37 XTOPT_TABLEEND,
39 #undef s
41 static void tproxy_tg_help(void)
43 printf(
44 "TPROXY target options:\n"
45 " --on-port port Redirect connection to port, or the original port if 0\n"
46 " --on-ip ip Optionally redirect to the given IP\n"
47 " --tproxy-mark value[/mask] Mark packets with the given value/mask\n\n");
50 static void tproxy_tg_print(const void *ip, const struct xt_entry_target *target,
51 int numeric)
53 const struct xt_tproxy_target_info *info = (const void *)target->data;
54 printf(" TPROXY redirect %s:%u mark 0x%x/0x%x",
55 xtables_ipaddr_to_numeric((const struct in_addr *)&info->laddr),
56 ntohs(info->lport), (unsigned int)info->mark_value,
57 (unsigned int)info->mark_mask);
60 static void
61 tproxy_tg_print4(const void *ip, const struct xt_entry_target *target,
62 int numeric)
64 const struct xt_tproxy_target_info_v1 *info =
65 (const void *)target->data;
67 printf(" TPROXY redirect %s:%u mark 0x%x/0x%x",
68 xtables_ipaddr_to_numeric(&info->laddr.in),
69 ntohs(info->lport), (unsigned int)info->mark_value,
70 (unsigned int)info->mark_mask);
73 static void
74 tproxy_tg_print6(const void *ip, const struct xt_entry_target *target,
75 int numeric)
77 const struct xt_tproxy_target_info_v1 *info =
78 (const void *)target->data;
80 printf(" TPROXY redirect %s:%u mark 0x%x/0x%x",
81 xtables_ip6addr_to_numeric(&info->laddr.in6),
82 ntohs(info->lport), (unsigned int)info->mark_value,
83 (unsigned int)info->mark_mask);
86 static void tproxy_tg_save(const void *ip, const struct xt_entry_target *target)
88 const struct xt_tproxy_target_info *info = (const void *)target->data;
90 printf(" --on-port %u", ntohs(info->lport));
91 printf(" --on-ip %s",
92 xtables_ipaddr_to_numeric((const struct in_addr *)&info->laddr));
93 printf(" --tproxy-mark 0x%x/0x%x",
94 (unsigned int)info->mark_value, (unsigned int)info->mark_mask);
97 static void
98 tproxy_tg_save4(const void *ip, const struct xt_entry_target *target)
100 const struct xt_tproxy_target_info_v1 *info;
102 info = (const void *)target->data;
103 printf(" --on-port %u", ntohs(info->lport));
104 printf(" --on-ip %s", xtables_ipaddr_to_numeric(&info->laddr.in));
105 printf(" --tproxy-mark 0x%x/0x%x",
106 (unsigned int)info->mark_value, (unsigned int)info->mark_mask);
109 static void
110 tproxy_tg_save6(const void *ip, const struct xt_entry_target *target)
112 const struct xt_tproxy_target_info_v1 *info;
114 info = (const void *)target->data;
115 printf(" --on-port %u", ntohs(info->lport));
116 printf(" --on-ip %s", xtables_ip6addr_to_numeric(&info->laddr.in6));
117 printf(" --tproxy-mark 0x%x/0x%x",
118 (unsigned int)info->mark_value, (unsigned int)info->mark_mask);
121 static void tproxy_tg0_parse(struct xt_option_call *cb)
123 struct xt_tproxy_target_info *info = cb->data;
125 xtables_option_parse(cb);
126 switch (cb->entry->id) {
127 case P_MARK:
128 info->mark_value = cb->val.mark;
129 info->mark_mask = cb->val.mask;
130 break;
131 case P_ADDR:
132 info->laddr = cb->val.haddr.ip;
133 break;
137 static void tproxy_tg1_parse(struct xt_option_call *cb)
139 struct xt_tproxy_target_info_v1 *info = cb->data;
141 xtables_option_parse(cb);
142 switch (cb->entry->id) {
143 case P_MARK:
144 info->mark_value = cb->val.mark;
145 info->mark_mask = cb->val.mask;
146 break;
150 static struct xtables_target tproxy_tg_reg[] = {
152 .name = "TPROXY",
153 .revision = 0,
154 .family = NFPROTO_IPV4,
155 .version = XTABLES_VERSION,
156 .size = XT_ALIGN(sizeof(struct xt_tproxy_target_info)),
157 .userspacesize = XT_ALIGN(sizeof(struct xt_tproxy_target_info)),
158 .help = tproxy_tg_help,
159 .print = tproxy_tg_print,
160 .save = tproxy_tg_save,
161 .x6_options = tproxy_tg0_opts,
162 .x6_parse = tproxy_tg0_parse,
165 .name = "TPROXY",
166 .revision = 1,
167 .family = NFPROTO_IPV4,
168 .version = XTABLES_VERSION,
169 .size = XT_ALIGN(sizeof(struct xt_tproxy_target_info_v1)),
170 .userspacesize = XT_ALIGN(sizeof(struct xt_tproxy_target_info_v1)),
171 .help = tproxy_tg_help,
172 .print = tproxy_tg_print4,
173 .save = tproxy_tg_save4,
174 .x6_options = tproxy_tg1_opts,
175 .x6_parse = tproxy_tg1_parse,
178 .name = "TPROXY",
179 .revision = 1,
180 .family = NFPROTO_IPV6,
181 .version = XTABLES_VERSION,
182 .size = XT_ALIGN(sizeof(struct xt_tproxy_target_info_v1)),
183 .userspacesize = XT_ALIGN(sizeof(struct xt_tproxy_target_info_v1)),
184 .help = tproxy_tg_help,
185 .print = tproxy_tg_print6,
186 .save = tproxy_tg_save6,
187 .x6_options = tproxy_tg1_opts,
188 .x6_parse = tproxy_tg1_parse,
192 void _init(void)
194 xtables_register_targets(tproxy_tg_reg, ARRAY_SIZE(tproxy_tg_reg));