1 /** 2 * ipset.h 3 * 4 * Author: Kevin Chou 5 * Email: k9982874@gmail.com 6 */ 7 #ifndef IPSET_H 8 #define IPSET_H 9 /** \file 10 * 11 * This file implements the ipset module. It can handle packets by putting 12 * the A and AAAA addresses that are configured in unbound.conf as type 13 * ipset (local-zone statements) into a firewall rule IPSet. For firewall 14 * blacklist and whitelist usage. 15 * 16 * To use the IPset module, install the libmnl-dev (or libmnl-devel) package 17 * and configure with --enable-ipset. And compile. Then enable the ipset 18 * module in unbound.conf with module-config: "ipset validator iterator" 19 * then create it with ipset -N blacklist iphash and then add 20 * local-zone: "example.com." ipset 21 * statements for the zones where you want the addresses of the names 22 * looked up added to the set. 23 * 24 * Set the name of the set with 25 * ipset: 26 * name-v4: "blacklist" 27 * name-v6: "blacklist6" 28 * in unbound.conf. The set can be used in this way: 29 * iptables -A INPUT -m set --set blacklist src -j DROP 30 * ip6tables -A INPUT -m set --set blacklist6 src -j DROP 31 */ 32 33 #include "util/module.h" 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 struct ipset_env { 40 void* mnl; 41 42 int v4_enabled; 43 int v6_enabled; 44 45 const char *name_v4; 46 const char *name_v6; 47 }; 48 49 struct ipset_qstate { 50 int dummy; 51 }; 52 53 /** Init the ipset module */ 54 int ipset_init(struct module_env* env, int id); 55 /** Deinit the ipset module */ 56 void ipset_deinit(struct module_env* env, int id); 57 /** Operate on an event on a query (in qstate). */ 58 void ipset_operate(struct module_qstate* qstate, enum module_ev event, 59 int id, struct outbound_entry* outbound); 60 /** Subordinate query done, inform this super request of its conclusion */ 61 void ipset_inform_super(struct module_qstate* qstate, int id, 62 struct module_qstate* super); 63 /** clear the ipset query-specific contents out of qstate */ 64 void ipset_clear(struct module_qstate* qstate, int id); 65 /** return memory estimate for ipset module */ 66 size_t ipset_get_mem(struct module_env* env, int id); 67 68 /** 69 * Get the function block with pointers to the ipset functions 70 * @return the function block for "ipset". 71 */ 72 struct module_func_block* ipset_get_funcblock(void); 73 74 #ifdef __cplusplus 75 } 76 #endif 77 78 #endif /* IPSET_H */ 79 80