Electroneum
dnscrypt.h
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1 #ifndef UNBOUND_DNSCRYPT_H
2 #define UNBOUND_DNSCRYPT_H
3 
9 #include "dnscrypt/dnscrypt_config.h"
10 #ifdef USE_DNSCRYPT
11 
12 #define DNSCRYPT_MAGIC_HEADER_LEN 8U
13 #define DNSCRYPT_MAGIC_RESPONSE "r6fnvWj8"
14 
15 #ifndef DNSCRYPT_MAX_PADDING
16 # define DNSCRYPT_MAX_PADDING 256U
17 #endif
18 #ifndef DNSCRYPT_BLOCK_SIZE
19 # define DNSCRYPT_BLOCK_SIZE 64U
20 #endif
21 #ifndef DNSCRYPT_MIN_PAD_LEN
22 # define DNSCRYPT_MIN_PAD_LEN 8U
23 #endif
24 
25 #define crypto_box_HALF_NONCEBYTES (crypto_box_NONCEBYTES / 2U)
26 
27 #include "config.h"
28 #include "dnscrypt/cert.h"
29 #include "util/locks.h"
30 
31 #define DNSCRYPT_QUERY_HEADER_SIZE \
32  (DNSCRYPT_MAGIC_HEADER_LEN + crypto_box_PUBLICKEYBYTES + crypto_box_HALF_NONCEBYTES + crypto_box_MACBYTES)
33 #define DNSCRYPT_RESPONSE_HEADER_SIZE \
34  (DNSCRYPT_MAGIC_HEADER_LEN + crypto_box_NONCEBYTES + crypto_box_MACBYTES)
35 
36 #define DNSCRYPT_REPLY_HEADER_SIZE \
37  (DNSCRYPT_MAGIC_HEADER_LEN + crypto_box_HALF_NONCEBYTES * 2 + crypto_box_MACBYTES)
38 
39 struct sldns_buffer;
40 struct config_file;
41 struct comm_reply;
42 struct slabhash;
43 
44 typedef struct KeyPair_ {
45  uint8_t crypt_publickey[crypto_box_PUBLICKEYBYTES];
46  uint8_t crypt_secretkey[crypto_box_SECRETKEYBYTES];
47 } KeyPair;
48 
49 typedef struct cert_ {
50  uint8_t magic_query[DNSCRYPT_MAGIC_HEADER_LEN];
51  uint8_t es_version[2];
52  KeyPair *keypair;
53 } dnsccert;
54 
55 struct dnsc_env {
56  struct SignedCert *signed_certs;
57  struct SignedCert **rotated_certs;
58  dnsccert *certs;
59  size_t signed_certs_count;
60  size_t rotated_certs_count;
61  uint8_t provider_publickey[crypto_sign_ed25519_PUBLICKEYBYTES];
62  uint8_t provider_secretkey[crypto_sign_ed25519_SECRETKEYBYTES];
63  KeyPair *keypairs;
64  size_t keypairs_count;
65  uint64_t nonce_ts_last;
66  unsigned char hash_key[crypto_shorthash_KEYBYTES];
67  char * provider_name;
68 
70  struct slabhash *shared_secrets_cache;
72  lock_basic_type shared_secrets_cache_lock;
74  size_t num_query_dnscrypt_secret_missed_cache;
75 
77  struct slabhash *nonces_cache;
79  lock_basic_type nonces_cache_lock;
81  size_t num_query_dnscrypt_replay;
82 };
83 
84 struct dnscrypt_query_header {
85  uint8_t magic_query[DNSCRYPT_MAGIC_HEADER_LEN];
86  uint8_t publickey[crypto_box_PUBLICKEYBYTES];
87  uint8_t nonce[crypto_box_HALF_NONCEBYTES];
88  uint8_t mac[crypto_box_MACBYTES];
89 };
90 
96 struct dnsc_env * dnsc_create(void);
97 
107 int dnsc_apply_cfg(struct dnsc_env *env, struct config_file *cfg);
108 
113 void dnsc_delete(struct dnsc_env *env);
114 
121 int dnsc_handle_curved_request(struct dnsc_env* dnscenv,
122  struct comm_reply* repinfo);
131 int dnsc_handle_uncurved_request(struct comm_reply *repinfo);
132 
136 size_t dnsc_shared_secrets_sizefunc(void *k, void *d);
137 
141 int dnsc_shared_secrets_compfunc(void *m1, void *m2);
142 
146 void dnsc_shared_secrets_delkeyfunc(void *k, void* arg);
147 
151 void dnsc_shared_secrets_deldatafunc(void* d, void* arg);
152 
156 size_t dnsc_nonces_sizefunc(void *k, void *d);
157 
161 int dnsc_nonces_compfunc(void *m1, void *m2);
162 
166 void dnsc_nonces_delkeyfunc(void *k, void* arg);
167 
171 void dnsc_nonces_deldatafunc(void* d, void* arg);
172 
173 
174 #endif /* USE_DNSCRYPT */
175 #endif
std::vector< std::string > keypair
unsigned char uint8_t
Definition: stdint.h:124
int lock_basic_type
Definition: locks.h:269
unsigned __int64 uint64_t
Definition: stdint.h:136