2 * validator/autotrust.h - RFC5011 trust anchor management for unbound.
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39 * Contains autotrust definitions.
42 #ifndef VALIDATOR_AUTOTRUST_H
43 #define VALIDATOR_AUTOTRUST_H
44 #include "util/rbtree.h"
45 #include "util/data/packed_rrset.h"
48 struct ub_packed_rrset_key;
52 /** Autotrust anchor states */
55 AUTR_STATE_ADDPEND = 1,
57 AUTR_STATE_MISSING = 3,
58 AUTR_STATE_REVOKED = 4,
59 AUTR_STATE_REMOVED = 5
63 * Autotrust metadata for one trust anchor key.
70 /** last update of key state (new pending count keeps date the same) */
75 uint8_t pending_count;
76 /** fresh TA was seen */
78 /** revoked TA was seen */
83 * Autotrust metadata for a trust point.
84 * This is part of the struct trust_anchor data.
86 struct autr_point_data {
87 /** file to store the trust point in. chrootdir already applied. */
89 /** rbtree node for probe sort, key is struct trust_anchor */
95 /** last queried DNSKEY set
96 * Not all failures are captured in this entry.
97 * If the validator did not even start (e.g. timeout or localservfail),
98 * then the last_queried and query_failed values are not updated.
101 /** last successful DNSKEY set */
103 /** next probe time */
104 time_t next_probe_time;
106 /** when to query if !failed */
107 uint32_t query_interval;
108 /** when to retry if failed */
112 * How many times did it fail. diagnostic only (has no effect).
113 * Only updated if there was a dnskey rrset that failed to verify.
115 uint8_t query_failed;
116 /** true if the trust point has been revoked */
121 * Autotrust global metadata.
123 struct autr_global_data {
124 /** rbtree of autotrust anchors sorted by next probe time.
125 * When time is equal, sorted by anchor class, name. */
130 * Create new global 5011 data structure.
131 * @return new structure or NULL on malloc failure.
133 struct autr_global_data* autr_global_create(void);
136 * Delete global 5011 data structure.
137 * @param global: global autotrust state to delete.
139 void autr_global_delete(struct autr_global_data* global);
142 * See if autotrust anchors are configured and how many.
143 * @param anchors: the trust anchors structure.
144 * @return number of autotrust trust anchors
146 size_t autr_get_num_anchors(struct val_anchors* anchors);
149 * Process probe timer. Add new probes if needed.
150 * @param env: module environment with time, with anchors and with the mesh.
151 * @return time of next probe (in seconds from now).
152 * If 0, then there is no next probe anymore (trust points deleted).
154 uint32_t autr_probe_timer(struct module_env* env);
156 /** probe tree compare function */
157 int probetree_cmp(const void* x, const void* y);
160 * Read autotrust file.
161 * @param anchors: the anchors structure.
162 * @param nm: name of the file (copied).
163 * @return false on failure.
165 int autr_read_file(struct val_anchors* anchors, const char* nm);
168 * Write autotrust file.
169 * @param env: environment with scratch space.
170 * @param tp: trust point to write.
172 void autr_write_file(struct module_env* env, struct trust_anchor* tp);
175 * Delete autr anchor, deletes the autr data but does not do
176 * unlinking from trees, caller does that.
177 * @param tp: trust point to delete.
179 void autr_point_delete(struct trust_anchor* tp);
182 * Perform autotrust processing.
183 * @param env: qstate environment with the anchors structure.
184 * @param ve: validator environment for verification of rrsigs.
185 * @param tp: trust anchor to process.
186 * @param dnskey_rrset: DNSKEY rrset probed (can be NULL if bad prime result).
187 * allocated in a region. Has not been validated yet.
188 * @return false if trust anchor was revoked completely.
189 * Otherwise logs errors to log, does not change return value.
190 * On errors, likely the trust point has been unchanged.
192 int autr_process_prime(struct module_env* env, struct val_env* ve,
193 struct trust_anchor* tp, struct ub_packed_rrset_key* dnskey_rrset);
196 * Debug printout of rfc5011 tracked anchors
197 * @param anchors: all the anchors.
199 void autr_debug_print(struct val_anchors* anchors);
201 /** callback for query answer to 5011 probe */
202 void probe_answer_cb(void* arg, int rcode, ldns_buffer* buf,
203 enum sec_status sec, char* errinf);
205 #endif /* VALIDATOR_AUTOTRUST_H */