lsquic_handshake.h revision 2f4629f2 
1/* Copyright (c) 2017 - 2020 LiteSpeed Technologies Inc.  See LICENSE. */
2#ifndef LSQUIC_HANDSHAKE_H
3#define LSQUIC_HANDSHAKE_H 1
4
5#define aes128_key_len 16
6#define aes128_iv_len 4
7#define STK_LENGTH   60
8#define SCID_LENGTH  16
9
10struct lsquic_server_config;
11struct sockaddr;
12struct lsquic_str;
13struct lsquic_packet_in;
14struct lsquic_cid;
15struct lsquic_enc_session;
16struct lsquic_engine_public;
17
18/* client side, certs and hashs
19 */
20typedef struct cert_hash_item_st
21{
22    struct lsquic_str*   domain; /*with port, such as "xyz.com:8088" as the key */
23    struct lsquic_str*   crts;
24    struct lsquic_str*   hashs;
25    struct lsquic_hash_elem hash_el;
26    int         count;
27} cert_hash_item_t;
28
29#ifndef NDEBUG
30enum hsk_failure_reason
31lsquic_verify_stk0(const struct lsquic_enc_session *,
32            struct lsquic_server_config *, const struct sockaddr *ip_addr, uint64_t tm,
33               struct lsquic_str *stk,
34               unsigned secs_since_stk_generated);
35enum hsk_failure_reason
36lsquic_verify_stk(void *, const struct sockaddr *ip_addr,
37                                        uint64_t tm, struct lsquic_str *stk);
38struct cert_hash_item_st* c_find_certs(const struct lsquic_str *domain);
39#endif
40
41#define SNO_LENGTH   56
42
43/* EVP_AEAD_CTX from boringssl pre-18d9f28f0df9f95570. */
44struct old_evp_aead_ctx_st {
45    void *ptr1;     /* aead */
46    void *ptr2;     /* aead_state */
47};
48
49/* Server need refresh SCFG once a day */
50/* can not use sizeof() to get the size */
51typedef struct SCFG_info_st
52{
53    unsigned char   sscid[SCID_LENGTH];
54    unsigned char   priv_key[32];
55    unsigned char   skt_key[16];
56    uint32_t        aead; /* Fixed, ONLY AESG */
57    uint32_t        kexs; /* Fixed, ONLY C255 */
58    uint32_t        pdmd; /* Fixed, ONLY X509 */
59    uint64_t        orbt; /* Fixed, 0 */
60    uint64_t        expy;
61    /* Keep the hole for compatibility with older builds of LSWS: */
62    struct old_evp_aead_ctx_st unused
63#if __GNUC__
64                                      __attribute__((deprecated))
65#endif
66                                                                 ;
67    short           scfg_len;
68} SCFG_info_t;
69
70struct SCFG_st
71{
72    SCFG_info_t info;
73    unsigned char   scfg[]; /* whoile buffer */
74};
75typedef struct SCFG_st SCFG_t;
76/* server side need to store STK with expired time */
77
78typedef struct lsquic_server_config
79{
80    SCFG_t         *lsc_scfg;   /* This part is stored in SHM */
81    EVP_AEAD_CTX    lsc_stk_ctx;
82} lsquic_server_config_t;
83
84/* Based on enum HandshakeFailureReason in Chromium */
85enum hsk_failure_reason
86{
87    HFR_HANDSHAKE_OK                         =  0,
88
89    /* Invalid client nonce in CHLO: */
90    HFR_CLIENT_NONCE_UNKNOWN                 =  1,  /* Default nonce failure */
91    HFR_CLIENT_NONCE_INVALID                 =  2,  /* Incorrect nonce length */
92    HFR_CLIENT_NONCE_NOT_UNIQ                =  3,
93    HFR_CLIENT_NONCE_INVALID_ORBIT           =  4,
94    HFR_CLIENT_NONCE_INVALID_TIME            =  5,
95
96    /* Invalid server nonce in CHLO: */
97    HFR_SERVER_NONCE_DECRYPTION              =  8,
98    HFR_SERVER_NONCE_INVALID                 =  9,
99    HFR_SERVER_NONCE_NOT_UNIQUE              =  10,
100    HFR_SERVER_NONCE_INVALID_TIME            =  11,
101    HFR_SERVER_NONCE_REQUIRED                =  20,
102
103    HFR_CONFIG_INCHOATE_HELLO                =  12, /* Missing SCID tag */
104    HFR_CONFIG_UNKNOWN_CONFIG                =  13, /* Could not find server config SCID */
105    HFR_SRC_ADDR_TOKEN_INVALID               =  14, /* Missing STK tag */
106    HFR_SRC_ADDR_TOKEN_DECRYPTION            =  15,
107    HFR_SRC_ADDR_TOKEN_PARSE                 =  16,
108    HFR_SRC_ADDR_TOKEN_DIFFERENT_IP_ADDRESS  =  17,
109    HFR_SRC_ADDR_TOKEN_CLOCK_SKEW            =  18,
110    HFR_SRC_ADDR_TOKEN_EXPIRED               =  19,
111    HFR_INVALID_EXPECTED_LEAF_CERTIFICATE    =  21,
112};
113
114enum lsquic_version
115lsquic_sess_resume_version (const unsigned char *, size_t);
116
117int
118lsquic_init_gquic_crypto (struct lsquic_engine_public *enpub);
119
120void
121lsquic_cleanup_gquic_crypto (struct lsquic_engine_public *enpub);
122
123#endif
124