2 * daemon/acl_list.h - client access control storage for the server.
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
6 * This software is open source.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
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19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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39 * This file keeps track of the list of clients that are allowed to
43 #ifndef DAEMON_ACL_LIST_H
44 #define DAEMON_ACL_LIST_H
45 #include "util/storage/dnstree.h"
46 #include "services/view.h"
51 * Enumeration of access control options for an address range.
52 * Allow or deny access.
55 /** disallow any access whatsoever, drop it */
57 /** disallow access, send a polite 'REFUSED' reply */
59 /** disallow any access to zones that aren't local, drop it */
61 /** disallow access to zones that aren't local, 'REFUSED' reply */
63 /** allow full access for recursion (+RD) queries */
65 /** allow full access for all queries, recursion and cache snooping */
70 * Access control storage structure
73 /** regional for allocation */
74 struct regional* region;
76 * Tree of the addresses that are allowed/blocked.
77 * contents of type acl_addr.
84 * An address span with access control information
87 /** node in address tree */
88 struct addr_tree_node node;
89 /** access control on this netblock */
90 enum acl_access control;
93 /** length of the taglist (in bytes) */
95 /** array per tagnumber of localzonetype(in one byte). NULL if none. */
97 /** size of the tag_actions_array */
98 size_t tag_actions_size;
99 /** array per tagnumber, with per tag a list of rdata strings.
100 * NULL if none. strings are like 'A 127.0.0.1' 'AAAA ::1' */
101 struct config_strlist** tag_datas;
102 /** size of the tag_datas array */
103 size_t tag_datas_size;
104 /* view element, NULL if none */
109 * Create acl structure
110 * @return new structure or NULL on error.
112 struct acl_list* acl_list_create(void);
115 * Delete acl structure.
116 * @param acl: to delete.
118 void acl_list_delete(struct acl_list* acl);
121 * Process access control config.
122 * @param acl: where to store.
123 * @param cfg: config options.
124 * @param v: views structure
125 * @return 0 on error.
127 int acl_list_apply_cfg(struct acl_list* acl, struct config_file* cfg,
131 * Lookup access control status for acl structure.
132 * @param acl: structure for acl storage.
133 * @return: what to do with message from this address.
135 enum acl_access acl_get_control(struct acl_addr* acl);
138 * Lookup address to see its acl structure
139 * @param acl: structure for address storage.
140 * @param addr: address to check
141 * @param addrlen: length of addr.
142 * @return: acl structure from this address.
145 acl_addr_lookup(struct acl_list* acl, struct sockaddr_storage* addr,
149 * Get memory used by acl structure.
150 * @param acl: structure for address storage.
151 * @return bytes in use.
153 size_t acl_list_get_mem(struct acl_list* acl);
155 #endif /* DAEMON_ACL_LIST_H */