diff options
Diffstat (limited to 'crypto/openssl/ssl/ssl_local.h')
| -rw-r--r-- | crypto/openssl/ssl/ssl_local.h | 3170 |
1 files changed, 3170 insertions, 0 deletions
diff --git a/crypto/openssl/ssl/ssl_local.h b/crypto/openssl/ssl/ssl_local.h new file mode 100644 index 000000000000..c53ebc36ae9d --- /dev/null +++ b/crypto/openssl/ssl/ssl_local.h @@ -0,0 +1,3170 @@ +/* + * Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved. + * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved + * Copyright 2005 Nokia. All rights reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#ifndef OSSL_SSL_LOCAL_H +# define OSSL_SSL_LOCAL_H + +# include <stdlib.h> +# include <time.h> +# include <errno.h> +# include "internal/common.h" /* for HAS_PREFIX */ + +# include <openssl/buffer.h> +# include <openssl/bio.h> +# include <openssl/comp.h> +# include <openssl/dsa.h> +# include <openssl/err.h> +# include <openssl/ssl.h> +# include <openssl/async.h> +# include <openssl/symhacks.h> +# include <openssl/ct.h> +# include "internal/recordmethod.h" +# include "internal/statem.h" +# include "internal/packet.h" +# include "internal/dane.h" +# include "internal/refcount.h" +# include "internal/tsan_assist.h" +# include "internal/bio.h" +# include "internal/ktls.h" +# include "internal/time.h" +# include "internal/ssl.h" +# include "internal/cryptlib.h" +# include "internal/quic_predef.h" +# include "record/record.h" +# include "internal/quic_predef.h" +# include "internal/quic_tls.h" + +# ifdef OPENSSL_BUILD_SHLIBSSL +# undef OPENSSL_EXTERN +# define OPENSSL_EXTERN OPENSSL_EXPORT +# endif + +# define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION +# define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION + +/* + * DTLS version numbers are strange because they're inverted. Except for + * DTLS1_BAD_VER, which should be considered "lower" than the rest. + */ +# define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1)) +# define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2)) +# define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2)) +# define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2)) +# define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2)) + +# define SSL_AD_NO_ALERT -1 + +/* + * Define the Bitmasks for SSL_CIPHER.algorithms. + * This bits are used packed as dense as possible. If new methods/ciphers + * etc will be added, the bits a likely to change, so this information + * is for internal library use only, even though SSL_CIPHER.algorithms + * can be publicly accessed. + * Use the according functions for cipher management instead. + * + * The bit mask handling in the selection and sorting scheme in + * ssl_create_cipher_list() has only limited capabilities, reflecting + * that the different entities within are mutually exclusive: + * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. + */ + +/* Bits for algorithm_mkey (key exchange algorithm) */ +/* RSA key exchange */ +# define SSL_kRSA 0x00000001U +/* tmp DH key no DH cert */ +# define SSL_kDHE 0x00000002U +/* ephemeral ECDH */ +# define SSL_kECDHE 0x00000004U +/* PSK */ +# define SSL_kPSK 0x00000008U +/* GOST key exchange */ +# define SSL_kGOST 0x00000010U +/* SRP */ +# define SSL_kSRP 0x00000020U + +# define SSL_kRSAPSK 0x00000040U +# define SSL_kECDHEPSK 0x00000080U +# define SSL_kDHEPSK 0x00000100U +/* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */ +# define SSL_kGOST18 0x00000200U + +/* all PSK */ + +# define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK) + +/* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */ +# define SSL_kANY 0x00000000U + +/* Bits for algorithm_auth (server authentication) */ +/* RSA auth */ +# define SSL_aRSA 0x00000001U +/* DSS auth */ +# define SSL_aDSS 0x00000002U +/* no auth (i.e. use ADH or AECDH) */ +# define SSL_aNULL 0x00000004U +/* ECDSA auth*/ +# define SSL_aECDSA 0x00000008U +/* PSK auth */ +# define SSL_aPSK 0x00000010U +/* GOST R 34.10-2001 signature auth */ +# define SSL_aGOST01 0x00000020U +/* SRP auth */ +# define SSL_aSRP 0x00000040U +/* GOST R 34.10-2012 signature auth */ +# define SSL_aGOST12 0x00000080U +/* Any appropriate signature auth (for TLS 1.3 ciphersuites) */ +# define SSL_aANY 0x00000000U +/* All bits requiring a certificate */ +#define SSL_aCERT \ + (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12) + +/* Bits for algorithm_enc (symmetric encryption) */ +# define SSL_DES 0x00000001U +# define SSL_3DES 0x00000002U +# define SSL_RC4 0x00000004U +# define SSL_RC2 0x00000008U +# define SSL_IDEA 0x00000010U +# define SSL_eNULL 0x00000020U +# define SSL_AES128 0x00000040U +# define SSL_AES256 0x00000080U +# define SSL_CAMELLIA128 0x00000100U +# define SSL_CAMELLIA256 0x00000200U +# define SSL_eGOST2814789CNT 0x00000400U +# define SSL_SEED 0x00000800U +# define SSL_AES128GCM 0x00001000U +# define SSL_AES256GCM 0x00002000U +# define SSL_AES128CCM 0x00004000U +# define SSL_AES256CCM 0x00008000U +# define SSL_AES128CCM8 0x00010000U +# define SSL_AES256CCM8 0x00020000U +# define SSL_eGOST2814789CNT12 0x00040000U +# define SSL_CHACHA20POLY1305 0x00080000U +# define SSL_ARIA128GCM 0x00100000U +# define SSL_ARIA256GCM 0x00200000U +# define SSL_MAGMA 0x00400000U +# define SSL_KUZNYECHIK 0x00800000U + +# define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM) +# define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8) +# define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM) +# define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) +# define SSL_CHACHA20 (SSL_CHACHA20POLY1305) +# define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM) +# define SSL_ARIA (SSL_ARIAGCM) +# define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \ + | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \ + | SSL_CAMELLIA256 | SSL_SEED) + +/* Bits for algorithm_mac (symmetric authentication) */ + +# define SSL_MD5 0x00000001U +# define SSL_SHA1 0x00000002U +# define SSL_GOST94 0x00000004U +# define SSL_GOST89MAC 0x00000008U +# define SSL_SHA256 0x00000010U +# define SSL_SHA384 0x00000020U +/* Not a real MAC, just an indication it is part of cipher */ +# define SSL_AEAD 0x00000040U +# define SSL_GOST12_256 0x00000080U +# define SSL_GOST89MAC12 0x00000100U +# define SSL_GOST12_512 0x00000200U +# define SSL_MAGMAOMAC 0x00000400U +# define SSL_KUZNYECHIKOMAC 0x00000800U + +/* + * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make + * sure to update this constant too + */ + +# define SSL_MD_MD5_IDX 0 +# define SSL_MD_SHA1_IDX 1 +# define SSL_MD_GOST94_IDX 2 +# define SSL_MD_GOST89MAC_IDX 3 +# define SSL_MD_SHA256_IDX 4 +# define SSL_MD_SHA384_IDX 5 +# define SSL_MD_GOST12_256_IDX 6 +# define SSL_MD_GOST89MAC12_IDX 7 +# define SSL_MD_GOST12_512_IDX 8 +# define SSL_MD_MD5_SHA1_IDX 9 +# define SSL_MD_SHA224_IDX 10 +# define SSL_MD_SHA512_IDX 11 +# define SSL_MD_MAGMAOMAC_IDX 12 +# define SSL_MD_KUZNYECHIKOMAC_IDX 13 +# define SSL_MAX_DIGEST 14 + +#define SSL_MD_NUM_IDX SSL_MAX_DIGEST + +/* Bits for algorithm2 (handshake digests and other extra flags) */ + +/* Bits 0-7 are handshake MAC */ +# define SSL_HANDSHAKE_MAC_MASK 0xFF +# define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX +# define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX +# define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX +# define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX +# define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX +# define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX +# define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1 + +/* Bits 8-15 bits are PRF */ +# define TLS1_PRF_DGST_SHIFT 8 +# define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) +# define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT) +# define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT) +# define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT) +# define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT) +# define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT) +# define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) + +/* + * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also + * goes into algorithm2) + */ +# define TLS1_STREAM_MAC 0x10000 +/* + * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites + * (currently this also goes into algorithm2) + */ +# define TLS1_TLSTREE 0x20000 + +/* Ciphersuite supported in QUIC */ +# define SSL_QUIC 0x00040000U + +# define SSL_STRONG_MASK 0x0000001FU +# define SSL_DEFAULT_MASK 0X00000020U + +# define SSL_STRONG_NONE 0x00000001U +# define SSL_LOW 0x00000002U +# define SSL_MEDIUM 0x00000004U +# define SSL_HIGH 0x00000008U +# define SSL_FIPS 0x00000010U +# define SSL_NOT_DEFAULT 0x00000020U + +/* we have used 0000003f - 26 bits left to go */ + +/* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */ +# define SSL3_CK_CIPHERSUITE_FLAG 0x03000000 + +/* Check if an SSL structure is using DTLS */ +# define SSL_CONNECTION_IS_DTLS(s) \ + (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) + +/* Check if an SSL_CTX structure is using DTLS */ +# define SSL_CTX_IS_DTLS(ctx) \ + (ctx->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) + +/* Check if we are using TLSv1.3 */ +# define SSL_CONNECTION_IS_TLS13(s) (!SSL_CONNECTION_IS_DTLS(s) \ + && SSL_CONNECTION_GET_SSL(s)->method->version >= TLS1_3_VERSION \ + && SSL_CONNECTION_GET_SSL(s)->method->version != TLS_ANY_VERSION) + +# define SSL_CONNECTION_TREAT_AS_TLS13(s) \ + (SSL_CONNECTION_IS_TLS13(s) \ + || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \ + || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \ + || (s)->early_data_state == SSL_EARLY_DATA_WRITING \ + || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \ + || (s)->hello_retry_request == SSL_HRR_PENDING) + +# define SSL_IS_FIRST_HANDSHAKE(s) ((s)->s3.tmp.finish_md_len == 0 \ + || (s)->s3.tmp.peer_finish_md_len == 0) + +/* + * See if we use signature algorithms extension and signature algorithm + * before signatures. + */ +# define SSL_USE_SIGALGS(s) \ + (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) +/* + * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may + * apply to others in future. + */ +# define SSL_USE_TLS1_2_CIPHERS(s) \ + (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) + +# define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \ + (((value) >= TLSEXT_max_fragment_length_512) && \ + ((value) <= TLSEXT_max_fragment_length_4096)) +# define USE_MAX_FRAGMENT_LENGTH_EXT(session) \ + IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode) +# define GET_MAX_FRAGMENT_LENGTH(session) \ + (512U << (session->ext.max_fragment_len_mode - 1)) + +# define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ) +# define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE) + +# define SSL_IS_QUIC_HANDSHAKE(s) (((s)->s3.flags & TLS1_FLAGS_QUIC) != 0) +# define SSL_IS_QUIC_INT_HANDSHAKE(s) (((s)->s3.flags & TLS1_FLAGS_QUIC_INTERNAL) != 0) + +/* no end of early data */ +# define SSL_NO_EOED(s) SSL_IS_QUIC_HANDSHAKE(s) + +/* alert_dispatch values */ + +/* No alert pending */ +# define SSL_ALERT_DISPATCH_NONE 0 +/* Alert pending */ +# define SSL_ALERT_DISPATCH_PENDING 1 +/* Pending alert write needs to be retried */ +# define SSL_ALERT_DISPATCH_RETRY 2 + +/* Mostly for SSLv3 */ +# define SSL_PKEY_RSA 0 +# define SSL_PKEY_RSA_PSS_SIGN 1 +# define SSL_PKEY_DSA_SIGN 2 +# define SSL_PKEY_ECC 3 +# define SSL_PKEY_GOST01 4 +# define SSL_PKEY_GOST12_256 5 +# define SSL_PKEY_GOST12_512 6 +# define SSL_PKEY_ED25519 7 +# define SSL_PKEY_ED448 8 +# define SSL_PKEY_NUM 9 + +# define SSL_ENC_DES_IDX 0 +# define SSL_ENC_3DES_IDX 1 +# define SSL_ENC_RC4_IDX 2 +# define SSL_ENC_RC2_IDX 3 +# define SSL_ENC_IDEA_IDX 4 +# define SSL_ENC_NULL_IDX 5 +# define SSL_ENC_AES128_IDX 6 +# define SSL_ENC_AES256_IDX 7 +# define SSL_ENC_CAMELLIA128_IDX 8 +# define SSL_ENC_CAMELLIA256_IDX 9 +# define SSL_ENC_GOST89_IDX 10 +# define SSL_ENC_SEED_IDX 11 +# define SSL_ENC_AES128GCM_IDX 12 +# define SSL_ENC_AES256GCM_IDX 13 +# define SSL_ENC_AES128CCM_IDX 14 +# define SSL_ENC_AES256CCM_IDX 15 +# define SSL_ENC_AES128CCM8_IDX 16 +# define SSL_ENC_AES256CCM8_IDX 17 +# define SSL_ENC_GOST8912_IDX 18 +# define SSL_ENC_CHACHA_IDX 19 +# define SSL_ENC_ARIA128GCM_IDX 20 +# define SSL_ENC_ARIA256GCM_IDX 21 +# define SSL_ENC_MAGMA_IDX 22 +# define SSL_ENC_KUZNYECHIK_IDX 23 +# define SSL_ENC_NUM_IDX 24 + +/*- + * SSL_kRSA <- RSA_ENC + * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) + * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN + * SSL_aRSA <- RSA_ENC | RSA_SIGN + * SSL_aDSS <- DSA_SIGN + */ + +/* Certificate Type State */ +# define OSSL_CERT_TYPE_CTOS_NONE 0 +# define OSSL_CERT_TYPE_CTOS_GOOD 1 +# define OSSL_CERT_TYPE_CTOS_ERROR 2 + +/* Post-Handshake Authentication state */ +typedef enum { + SSL_PHA_NONE = 0, + SSL_PHA_EXT_SENT, /* client-side only: extension sent */ + SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */ + SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */ + SSL_PHA_REQUESTED /* request received by client, or sent by server */ +} SSL_PHA_STATE; + +/* CipherSuite length. SSLv3 and all TLS versions. */ +# define TLS_CIPHER_LEN 2 +/* used to hold info on the particular ciphers used */ +struct ssl_cipher_st { + uint32_t valid; + const char *name; /* text name */ + const char *stdname; /* RFC name */ + uint32_t id; /* id, 4 bytes, first is version */ + /* + * changed in 1.0.0: these four used to be portions of a single value + * 'algorithms' + */ + uint32_t algorithm_mkey; /* key exchange algorithm */ + uint32_t algorithm_auth; /* server authentication */ + uint32_t algorithm_enc; /* symmetric encryption */ + uint32_t algorithm_mac; /* symmetric authentication */ + int min_tls; /* minimum SSL/TLS protocol version */ + int max_tls; /* maximum SSL/TLS protocol version */ + int min_dtls; /* minimum DTLS protocol version */ + int max_dtls; /* maximum DTLS protocol version */ + uint32_t algo_strength; /* strength and export flags */ + uint32_t algorithm2; /* Extra flags */ + int32_t strength_bits; /* Number of bits really used */ + uint32_t alg_bits; /* Number of bits for algorithm */ +}; + +/* Used to hold SSL/TLS functions */ +struct ssl_method_st { + int version; + unsigned flags; + uint64_t mask; + SSL *(*ssl_new) (SSL_CTX *ctx); + void (*ssl_free) (SSL *s); + int (*ssl_reset) (SSL *s); + int (*ssl_init) (SSL *s); + int (*ssl_clear) (SSL *s); + void (*ssl_deinit) (SSL *s); + int (*ssl_accept) (SSL *s); + int (*ssl_connect) (SSL *s); + int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes); + int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes); + int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written); + int (*ssl_shutdown) (SSL *s); + int (*ssl_renegotiate) (SSL *s); + int (*ssl_renegotiate_check) (SSL *s, int); + int (*ssl_read_bytes) (SSL *s, uint8_t type, uint8_t *recvd_type, + unsigned char *buf, size_t len, int peek, + size_t *readbytes); + int (*ssl_write_bytes) (SSL *s, uint8_t type, const void *buf_, size_t len, + size_t *written); + int (*ssl_dispatch_alert) (SSL *s); + long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg); + long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg); + const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr); + int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt, + size_t *len); + size_t (*ssl_pending) (const SSL *s); + int (*num_ciphers) (void); + const SSL_CIPHER *(*get_cipher) (unsigned ncipher); + OSSL_TIME (*get_timeout) (void); + const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ + int (*ssl_version) (void); + long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void)); + long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void)); +}; + +/* + * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for + * consistency, even in the event of OPENSSL_NO_PSK being defined. + */ +# define TLS13_MAX_RESUMPTION_PSK_LENGTH 512 + +/*- + * Lets make this into an ASN.1 type structure as follows + * SSL_SESSION_ID ::= SEQUENCE { + * version INTEGER, -- structure version number + * SSLversion INTEGER, -- SSL version number + * Cipher OCTET STRING, -- the 3 byte cipher ID + * Session_ID OCTET STRING, -- the Session ID + * Master_key OCTET STRING, -- the master key + * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument + * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time + * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds + * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate + * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context + * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer' + * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension + * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint + * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity + * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket + * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only) + * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method + * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username + * flags [ 13 ] EXPLICIT INTEGER -- optional flags + * } + * Look in ssl/ssl_asn1.c for more details + * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-). + */ +struct ssl_session_st { + int ssl_version; /* what ssl version session info is being kept + * in here? */ + size_t master_key_length; + + /* TLSv1.3 early_secret used for external PSKs */ + unsigned char early_secret[EVP_MAX_MD_SIZE]; + /* + * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption + * PSK + */ + unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH]; + /* session_id - valid? */ + size_t session_id_length; + unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; + /* + * this is used to determine whether the session is being reused in the + * appropriate context. It is up to the application to set this, via + * SSL_new + */ + size_t sid_ctx_length; + unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; +# ifndef OPENSSL_NO_PSK + char *psk_identity_hint; + char *psk_identity; +# endif + /* + * Used to indicate that session resumption is not allowed. Applications + * can also set this bit for a new session via not_resumable_session_cb + * to disable session caching and tickets. + */ + int not_resumable; + /* Peer raw public key, if available */ + EVP_PKEY *peer_rpk; + /* This is the cert and type for the other end. */ + X509 *peer; + /* Certificate chain peer sent. */ + STACK_OF(X509) *peer_chain; + /* + * when app_verify_callback accepts a session where the peer's + * certificate is not ok, we must remember the error for session reuse: + */ + long verify_result; /* only for servers */ + OSSL_TIME timeout; + OSSL_TIME time; + OSSL_TIME calc_timeout; + unsigned int compress_meth; /* Need to lookup the method */ + const SSL_CIPHER *cipher; + unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to + * load the 'cipher' structure */ + unsigned int kex_group; /* TLS group from key exchange */ + CRYPTO_EX_DATA ex_data; /* application specific data */ + + struct { + char *hostname; + /* RFC4507 info */ + unsigned char *tick; /* Session ticket */ + size_t ticklen; /* Session ticket length */ + /* Session lifetime hint in seconds */ + unsigned long tick_lifetime_hint; + uint32_t tick_age_add; + /* Max number of bytes that can be sent as early data */ + uint32_t max_early_data; + /* The ALPN protocol selected for this session */ + unsigned char *alpn_selected; + size_t alpn_selected_len; + /* + * Maximum Fragment Length as per RFC 4366. + * If this value does not contain RFC 4366 allowed values (1-4) then + * either the Maximum Fragment Length Negotiation failed or was not + * performed at all. + */ + uint8_t max_fragment_len_mode; + } ext; +# ifndef OPENSSL_NO_SRP + char *srp_username; +# endif + unsigned char *ticket_appdata; + size_t ticket_appdata_len; + uint32_t flags; + SSL_CTX *owner; + + /* + * These are used to make removal of session-ids more efficient and to + * implement a maximum cache size. Access requires protection of ctx->lock. + */ + struct ssl_session_st *prev, *next; + CRYPTO_REF_COUNT references; +}; + +/* Extended master secret support */ +# define SSL_SESS_FLAG_EXTMS 0x1 + +# ifndef OPENSSL_NO_SRP + +typedef struct srp_ctx_st { + /* param for all the callbacks */ + void *SRP_cb_arg; + /* set client Hello login callback */ + int (*TLS_ext_srp_username_callback) (SSL *, int *, void *); + /* set SRP N/g param callback for verification */ + int (*SRP_verify_param_callback) (SSL *, void *); + /* set SRP client passwd callback */ + char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *); + char *login; + BIGNUM *N, *g, *s, *B, *A; + BIGNUM *a, *b, *v; + char *info; + int strength; + unsigned long srp_Mask; +} SRP_CTX; + +# endif + +typedef enum { + SSL_EARLY_DATA_NONE = 0, + SSL_EARLY_DATA_CONNECT_RETRY, + SSL_EARLY_DATA_CONNECTING, + SSL_EARLY_DATA_WRITE_RETRY, + SSL_EARLY_DATA_WRITING, + SSL_EARLY_DATA_WRITE_FLUSH, + SSL_EARLY_DATA_UNAUTH_WRITING, + SSL_EARLY_DATA_FINISHED_WRITING, + SSL_EARLY_DATA_ACCEPT_RETRY, + SSL_EARLY_DATA_ACCEPTING, + SSL_EARLY_DATA_READ_RETRY, + SSL_EARLY_DATA_READING, + SSL_EARLY_DATA_FINISHED_READING +} SSL_EARLY_DATA_STATE; + +/* + * We check that the amount of unreadable early data doesn't exceed + * max_early_data. max_early_data is given in plaintext bytes. However if it is + * unreadable then we only know the number of ciphertext bytes. We also don't + * know how much the overhead should be because it depends on the ciphersuite. + * We make a small allowance. We assume 5 records of actual data plus the end + * of early data alert record. Each record has a tag and a content type byte. + * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the + * content of the alert record either which is 2 bytes. + */ +# define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2) + +/* + * The allowance we have between the client's calculated ticket age and our own. + * We allow for 10 seconds. If a ticket is presented and the + * client's age calculation is different by more than this than our own then we + * do not allow that ticket for early_data. + */ +# define TICKET_AGE_ALLOWANCE ossl_seconds2time(10) + +#define MAX_COMPRESSIONS_SIZE 255 + + +typedef struct raw_extension_st { + /* Raw packet data for the extension */ + PACKET data; + /* Set to 1 if the extension is present or 0 otherwise */ + int present; + /* Set to 1 if we have already parsed the extension or 0 otherwise */ + int parsed; + /* The type of this extension, i.e. a TLSEXT_TYPE_* value */ + unsigned int type; + /* Track what order extensions are received in (0-based). */ + size_t received_order; +} RAW_EXTENSION; + +typedef struct { + unsigned int isv2; + unsigned int legacy_version; + unsigned char random[SSL3_RANDOM_SIZE]; + size_t session_id_len; + unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; + size_t dtls_cookie_len; + unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH]; + PACKET ciphersuites; + size_t compressions_len; + unsigned char compressions[MAX_COMPRESSIONS_SIZE]; + PACKET extensions; + size_t pre_proc_exts_len; + RAW_EXTENSION *pre_proc_exts; +} CLIENTHELLO_MSG; + +/* + * Extension index values NOTE: Any updates to these defines should be mirrored + * with equivalent updates to ext_defs in extensions.c + */ +typedef enum tlsext_index_en { + TLSEXT_IDX_renegotiate, + TLSEXT_IDX_server_name, + TLSEXT_IDX_max_fragment_length, + TLSEXT_IDX_srp, + TLSEXT_IDX_ec_point_formats, + TLSEXT_IDX_supported_groups, + TLSEXT_IDX_session_ticket, + TLSEXT_IDX_status_request, + TLSEXT_IDX_next_proto_neg, + TLSEXT_IDX_application_layer_protocol_negotiation, + TLSEXT_IDX_use_srtp, + TLSEXT_IDX_encrypt_then_mac, + TLSEXT_IDX_signed_certificate_timestamp, + TLSEXT_IDX_extended_master_secret, + TLSEXT_IDX_signature_algorithms_cert, + TLSEXT_IDX_post_handshake_auth, + TLSEXT_IDX_client_cert_type, + TLSEXT_IDX_server_cert_type, + TLSEXT_IDX_signature_algorithms, + TLSEXT_IDX_supported_versions, + TLSEXT_IDX_psk_kex_modes, + TLSEXT_IDX_key_share, + TLSEXT_IDX_cookie, + TLSEXT_IDX_cryptopro_bug, + TLSEXT_IDX_compress_certificate, + TLSEXT_IDX_early_data, + TLSEXT_IDX_certificate_authorities, + TLSEXT_IDX_padding, + TLSEXT_IDX_psk, + /* Dummy index - must always be the last entry */ + TLSEXT_IDX_num_builtins +} TLSEXT_INDEX; + +DEFINE_LHASH_OF_EX(SSL_SESSION); +/* Needed in ssl_cert.c */ +DEFINE_LHASH_OF_EX(X509_NAME); + +# define TLSEXT_KEYNAME_LENGTH 16 +# define TLSEXT_TICK_KEY_LENGTH 32 + +typedef struct ssl_ctx_ext_secure_st { + unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH]; + unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH]; +} SSL_CTX_EXT_SECURE; + +/* + * Helper function for HMAC + * The structure should be considered opaque, it will change once the low + * level deprecated calls are removed. At that point it can be replaced + * by EVP_MAC_CTX and most of the functions converted to macros or inlined + * directly. + */ +typedef struct ssl_hmac_st { + EVP_MAC_CTX *ctx; +# ifndef OPENSSL_NO_DEPRECATED_3_0 + HMAC_CTX *old_ctx; +# endif +} SSL_HMAC; + +SSL_HMAC *ssl_hmac_new(const SSL_CTX *ctx); +void ssl_hmac_free(SSL_HMAC *ctx); +# ifndef OPENSSL_NO_DEPRECATED_3_0 +HMAC_CTX *ssl_hmac_get0_HMAC_CTX(SSL_HMAC *ctx); +# endif +EVP_MAC_CTX *ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC *ctx); +int ssl_hmac_init(SSL_HMAC *ctx, void *key, size_t len, char *md); +int ssl_hmac_update(SSL_HMAC *ctx, const unsigned char *data, size_t len); +int ssl_hmac_final(SSL_HMAC *ctx, unsigned char *md, size_t *len, + size_t max_size); +size_t ssl_hmac_size(const SSL_HMAC *ctx); + +int ssl_get_EC_curve_nid(const EVP_PKEY *pkey); +__owur int tls13_set_encoded_pub_key(EVP_PKEY *pkey, + const unsigned char *enckey, + size_t enckeylen); + +typedef struct tls_group_info_st { + char *tlsname; /* Curve Name as in TLS specs */ + char *realname; /* Curve Name according to provider */ + char *algorithm; /* Algorithm name to fetch */ + unsigned int secbits; /* Bits of security (from SP800-57) */ + uint16_t group_id; /* Group ID */ + int mintls; /* Minimum TLS version, -1 unsupported */ + int maxtls; /* Maximum TLS version (or 0 for undefined) */ + int mindtls; /* Minimum DTLS version, -1 unsupported */ + int maxdtls; /* Maximum DTLS version (or 0 for undefined) */ + char is_kem; /* Mode for this Group: 0 is KEX, 1 is KEM */ +} TLS_GROUP_INFO; + +typedef struct tls_sigalg_info_st { + char *name; /* name as in IANA TLS specs */ + uint16_t code_point; /* IANA-specified code point of sigalg-name */ + char *sigalg_name; /* (combined) sigalg name */ + char *sigalg_oid; /* (combined) sigalg OID */ + char *sig_name; /* pure signature algorithm name */ + char *sig_oid; /* pure signature algorithm OID */ + char *hash_name; /* hash algorithm name */ + char *hash_oid; /* hash algorithm OID */ + char *keytype; /* keytype name */ + char *keytype_oid; /* keytype OID */ + unsigned int secbits; /* Bits of security (from SP800-57) */ + int mintls; /* Minimum TLS version, -1 unsupported */ + int maxtls; /* Maximum TLS version (or 0 for undefined) */ + int mindtls; /* Minimum DTLS version, -1 unsupported */ + int maxdtls; /* Maximum DTLS version (or 0 for undefined) */ +} TLS_SIGALG_INFO; + +/* + * Structure containing table entry of certificate info corresponding to + * CERT_PKEY entries + */ +typedef struct { + int nid; /* NID of public key algorithm */ + uint32_t amask; /* authmask corresponding to key type */ +} SSL_CERT_LOOKUP; + +/* flags values */ +# define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */ +# define TLS_GROUP_CURVE_PRIME 0x00000001U +# define TLS_GROUP_CURVE_CHAR2 0x00000002U +# define TLS_GROUP_CURVE_CUSTOM 0x00000004U +# define TLS_GROUP_FFDHE 0x00000008U +# define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U + +# define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3) + +/* We limit the number of key shares sent */ +# ifndef OPENSSL_CLIENT_MAX_KEY_SHARES +# define OPENSSL_CLIENT_MAX_KEY_SHARES 4 +# endif + +struct ssl_ctx_st { + OSSL_LIB_CTX *libctx; + + const SSL_METHOD *method; + STACK_OF(SSL_CIPHER) *cipher_list; + /* same as above but sorted for lookup */ + STACK_OF(SSL_CIPHER) *cipher_list_by_id; + /* TLSv1.3 specific ciphersuites */ + STACK_OF(SSL_CIPHER) *tls13_ciphersuites; + struct x509_store_st /* X509_STORE */ *cert_store; + LHASH_OF(SSL_SESSION) *sessions; + /* + * Most session-ids that will be cached, default is + * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. + */ + size_t session_cache_size; + struct ssl_session_st *session_cache_head; + struct ssl_session_st *session_cache_tail; + /* + * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT, + * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which + * means only SSL_accept will cache SSL_SESSIONS. + */ + uint32_t session_cache_mode; + /* + * If timeout is not 0, it is the default timeout value set when + * SSL_new() is called. This has been put in to make life easier to set + * things up + */ + OSSL_TIME session_timeout; + /* + * If this callback is not null, it will be called each time a session id + * is added to the cache. If this function returns 1, it means that the + * callback will do an SSL_SESSION_free() when it has finished using it. + * Otherwise, on 0, it means the callback has finished with it. If + * remove_session_cb is not null, it will be called when a session-id is + * removed from the cache. After the call, OpenSSL will + * SSL_SESSION_free() it. + */ + int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess); + void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess); + SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl, + const unsigned char *data, int len, + int *copy); + struct { + TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */ + TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */ + TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */ + TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */ + TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */ + TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */ + TSAN_QUALIFIER int sess_miss; /* session lookup misses */ + TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */ + TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */ + TSAN_QUALIFIER int sess_hit; /* session reuse actually done */ + TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in + * the cache was passed back via + * the callback. This indicates + * that the application is + * supplying session-id's from + * other processes - spooky + * :-) */ + } stats; +#ifdef TSAN_REQUIRES_LOCKING + CRYPTO_RWLOCK *tsan_lock; +#endif + + CRYPTO_REF_COUNT references; + + /* if defined, these override the X509_verify_cert() calls */ + int (*app_verify_callback) (X509_STORE_CTX *, void *); + void *app_verify_arg; + /* + * before OpenSSL 0.9.7, 'app_verify_arg' was ignored + * ('app_verify_callback' was called with just one argument) + */ + + /* Default password callback. */ + pem_password_cb *default_passwd_callback; + + /* Default password callback user data. */ + void *default_passwd_callback_userdata; + + /* get client cert callback */ + int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey); + + /* cookie generate callback */ + int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie, + unsigned int *cookie_len); + + /* verify cookie callback */ + int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie, + unsigned int cookie_len); + + /* TLS1.3 app-controlled cookie generate callback */ + int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie, + size_t *cookie_len); + + /* TLS1.3 verify app-controlled cookie callback */ + int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie, + size_t cookie_len); + + CRYPTO_EX_DATA ex_data; + + const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */ + const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3-sha1' */ + + STACK_OF(X509) *extra_certs; + STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */ + + /* Default values used when no per-SSL value is defined follow */ + + /* used if SSL's info_callback is NULL */ + void (*info_callback) (const SSL *ssl, int type, int val); + + /* + * What we put in certificate_authorities extension for TLS 1.3 + * (ClientHello and CertificateRequest) or just client cert requests for + * earlier versions. If client_ca_names is populated then it is only used + * for client cert requests, and in preference to ca_names. + */ + STACK_OF(X509_NAME) *ca_names; + STACK_OF(X509_NAME) *client_ca_names; + + /* + * Default values to use in SSL structures follow (these are copied by + * SSL_new) + */ + + uint64_t options; + uint32_t mode; + int min_proto_version; + int max_proto_version; + size_t max_cert_list; + + struct cert_st /* CERT */ *cert; + SSL_CERT_LOOKUP *ssl_cert_info; + int read_ahead; + + /* callback that allows applications to peek at protocol messages */ + ossl_msg_cb msg_callback; + void *msg_callback_arg; + + uint32_t verify_mode; + size_t sid_ctx_length; + unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; + /* called 'verify_callback' in the SSL */ + int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx); + + /* Default generate session ID callback. */ + GEN_SESSION_CB generate_session_id; + + X509_VERIFY_PARAM *param; + + int quiet_shutdown; + +# ifndef OPENSSL_NO_CT + CTLOG_STORE *ctlog_store; /* CT Log Store */ + /* + * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. + * If they are not, the connection should be aborted. + */ + ssl_ct_validation_cb ct_validation_callback; + void *ct_validation_callback_arg; +# endif + + /* + * If we're using more than one pipeline how should we divide the data + * up between the pipes? + */ + size_t split_send_fragment; + /* + * Maximum amount of data to send in one fragment. actual record size can + * be more than this due to padding and MAC overheads. + */ + size_t max_send_fragment; + + /* Up to how many pipelines should we use? If 0 then 1 is assumed */ + size_t max_pipelines; + + /* The default read buffer length to use (0 means not set) */ + size_t default_read_buf_len; + +# ifndef OPENSSL_NO_ENGINE + /* + * Engine to pass requests for client certs to + */ + ENGINE *client_cert_engine; +# endif + + /* ClientHello callback. Mostly for extensions, but not entirely. */ + SSL_client_hello_cb_fn client_hello_cb; + void *client_hello_cb_arg; + + /* Callback to announce new pending ssl objects in the accept queue */ + SSL_new_pending_conn_cb_fn new_pending_conn_cb; + void *new_pending_conn_arg; + + /* TLS extensions. */ + struct { + /* TLS extensions servername callback */ + int (*servername_cb) (SSL *, int *, void *); + void *servername_arg; + /* RFC 4507 session ticket keys */ + unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH]; + SSL_CTX_EXT_SECURE *secure; +# ifndef OPENSSL_NO_DEPRECATED_3_0 + /* Callback to support customisation of ticket key setting */ + int (*ticket_key_cb) (SSL *ssl, + unsigned char *name, unsigned char *iv, + EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); +#endif + int (*ticket_key_evp_cb) (SSL *ssl, + unsigned char *name, unsigned char *iv, + EVP_CIPHER_CTX *ectx, EVP_MAC_CTX *hctx, + int enc); + + /* certificate status request info */ + /* Callback for status request */ + int (*status_cb) (SSL *ssl, void *arg); + void *status_arg; + /* ext status type used for CSR extension (OCSP Stapling) */ + int status_type; + /* RFC 4366 Maximum Fragment Length Negotiation */ + uint8_t max_fragment_len_mode; + + /* EC extension values inherited by SSL structure */ + size_t ecpointformats_len; + unsigned char *ecpointformats; + + size_t supportedgroups_len; + uint16_t *supportedgroups; + + size_t keyshares_len; + uint16_t *keyshares; + + size_t tuples_len; /* Number of group tuples */ + size_t *tuples; /* Number of groups in each group tuple */ + + /* + * ALPN information (we are in the process of transitioning from NPN to + * ALPN.) + */ + + /*- + * For a server, this contains a callback function that allows the + * server to select the protocol for the connection. + * out: on successful return, this must point to the raw protocol + * name (without the length prefix). + * outlen: on successful return, this contains the length of |*out|. + * in: points to the client's list of supported protocols in + * wire-format. + * inlen: the length of |in|. + */ + int (*alpn_select_cb) (SSL *s, + const unsigned char **out, + unsigned char *outlen, + const unsigned char *in, + unsigned int inlen, void *arg); + void *alpn_select_cb_arg; + + /* + * For a client, this contains the list of supported protocols in wire + * format. + */ + unsigned char *alpn; + size_t alpn_len; + +# ifndef OPENSSL_NO_NEXTPROTONEG + /* Next protocol negotiation information */ + + /* + * For a server, this contains a callback function by which the set of + * advertised protocols can be provided. + */ + SSL_CTX_npn_advertised_cb_func npn_advertised_cb; + void *npn_advertised_cb_arg; + /* + * For a client, this contains a callback function that selects the next + * protocol from the list provided by the server. + */ + SSL_CTX_npn_select_cb_func npn_select_cb; + void *npn_select_cb_arg; +# endif + + unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH]; + } ext; + +# ifndef OPENSSL_NO_PSK + SSL_psk_client_cb_func psk_client_callback; + SSL_psk_server_cb_func psk_server_callback; +# endif + SSL_psk_find_session_cb_func psk_find_session_cb; + SSL_psk_use_session_cb_func psk_use_session_cb; + +# ifndef OPENSSL_NO_SRP + SRP_CTX srp_ctx; /* ctx for SRP authentication */ +# endif + + /* Shared DANE context */ + struct dane_ctx_st dane; + +# ifndef OPENSSL_NO_SRTP + /* SRTP profiles we are willing to do from RFC 5764 */ + STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; +# endif + /* + * Callback for disabling session caching and ticket support on a session + * basis, depending on the chosen cipher. + */ + int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); + + CRYPTO_RWLOCK *lock; + + /* + * Callback for logging key material for use with debugging tools like + * Wireshark. The callback should log `line` followed by a newline. + */ + SSL_CTX_keylog_cb_func keylog_callback; + + /* + * Private flag for internal key logging based on SSLKEYLOG env + */ +# ifndef OPENSSL_NO_SSLKEYLOG + uint32_t do_sslkeylog; +# endif + + /* + * The maximum number of bytes advertised in session tickets that can be + * sent as early data. + */ + uint32_t max_early_data; + + /* + * The maximum number of bytes of early data that a server will tolerate + * (which should be at least as much as max_early_data). + */ + uint32_t recv_max_early_data; + + /* TLS1.3 padding callback */ + size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); + void *record_padding_arg; + size_t block_padding; + size_t hs_padding; + + /* Session ticket appdata */ + SSL_CTX_generate_session_ticket_fn generate_ticket_cb; + SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb; + void *ticket_cb_data; + + /* The number of TLS1.3 tickets to automatically send */ + size_t num_tickets; + + /* Callback to determine if early_data is acceptable or not */ + SSL_allow_early_data_cb_fn allow_early_data_cb; + void *allow_early_data_cb_data; + + /* Do we advertise Post-handshake auth support? */ + int pha_enabled; + + /* Callback for SSL async handling */ + SSL_async_callback_fn async_cb; + void *async_cb_arg; + + char *propq; + + int ssl_mac_pkey_id[SSL_MD_NUM_IDX]; + const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]; + const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]; + size_t ssl_mac_secret_size[SSL_MD_NUM_IDX]; + + size_t sigalg_lookup_cache_len; + size_t tls12_sigalgs_len; + /* Cache of all sigalgs we know and whether they are available or not */ + struct sigalg_lookup_st *sigalg_lookup_cache; + /* List of all sigalgs (code points) available, incl. from providers */ + uint16_t *tls12_sigalgs; + + TLS_GROUP_INFO *group_list; + size_t group_list_len; + size_t group_list_max_len; + + TLS_SIGALG_INFO *sigalg_list; + size_t sigalg_list_len; + size_t sigalg_list_max_len; + + /* masks of disabled algorithms */ + uint32_t disabled_enc_mask; + uint32_t disabled_mac_mask; + uint32_t disabled_mkey_mask; + uint32_t disabled_auth_mask; + +#ifndef OPENSSL_NO_COMP_ALG + /* certificate compression preferences */ + int cert_comp_prefs[TLSEXT_comp_cert_limit]; +#endif + + /* Certificate Type stuff - for RPK vs X.509 */ + unsigned char *client_cert_type; + size_t client_cert_type_len; + unsigned char *server_cert_type; + size_t server_cert_type_len; + +# ifndef OPENSSL_NO_QUIC + uint64_t domain_flags; + SSL_TOKEN_STORE *tokencache; +# endif + +# ifndef OPENSSL_NO_QLOG + char *qlog_title; /* Session title for qlog */ +# endif +}; + +typedef struct ossl_quic_tls_callbacks_st { + int (*crypto_send_cb)(SSL *s, const unsigned char *buf, size_t buf_len, + size_t *consumed, void *arg); + int (*crypto_recv_rcd_cb)(SSL *s, const unsigned char **buf, + size_t *bytes_read, void *arg); + int (*crypto_release_rcd_cb)(SSL *s, size_t bytes_read, void *arg); + int (*yield_secret_cb)(SSL *s, uint32_t prot_level, int direction, + const unsigned char *secret, size_t secret_len, + void *arg); + int (*got_transport_params_cb)(SSL *s, const unsigned char *params, + size_t params_len, + void *arg); + int (*alert_cb)(SSL *s, unsigned char alert_code, void *arg); +} OSSL_QUIC_TLS_CALLBACKS; + +typedef struct cert_pkey_st CERT_PKEY; + +#define SSL_TYPE_SSL_CONNECTION 0 +#define SSL_TYPE_QUIC_CONNECTION 0x80 +#define SSL_TYPE_QUIC_XSO 0x81 +#define SSL_TYPE_QUIC_LISTENER 0x82 +#define SSL_TYPE_QUIC_DOMAIN 0x83 + +#define SSL_TYPE_IS_QUIC(x) (((x) & 0x80) != 0) + +struct ssl_st { + int type; + SSL_CTX *ctx; + const SSL_METHOD *defltmeth; + const SSL_METHOD *method; + CRYPTO_REF_COUNT references; + CRYPTO_RWLOCK *lock; + /* extra application data */ + CRYPTO_EX_DATA ex_data; +}; + +struct ssl_connection_st { + /* type identifier and common data */ + struct ssl_st ssl; + + /* + * The actual end user's SSL object. Could be different to this one for + * QUIC + */ + SSL *user_ssl; + + /* + * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, + * DTLS1_VERSION) + */ + int version; + /* + * There are 2 BIO's even though they are normally both the same. This + * is so data can be read and written to different handlers + */ + /* used by SSL_read */ + BIO *rbio; + /* used by SSL_write */ + BIO *wbio; + /* used during session-id reuse to concatenate messages */ + BIO *bbio; + /* + * This holds a variable that indicates what we were doing when a 0 or -1 + * is returned. This is needed for non-blocking IO so we know what + * request needs re-doing when in SSL_accept or SSL_connect + */ + int rwstate; + int (*handshake_func) (SSL *); + /* + * Imagine that here's a boolean member "init" that is switched as soon + * as SSL_set_{accept/connect}_state is called for the first time, so + * that "state" and "handshake_func" are properly initialized. But as + * handshake_func is == 0 until then, we use this test instead of an + * "init" member. + */ + /* are we the server side? */ + int server; + /* + * Generate a new session or reuse an old one. + * NB: For servers, the 'new' session may actually be a previously + * cached session or even the previous session unless + * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set + */ + int new_session; + /* don't send shutdown packets */ + int quiet_shutdown; + /* we have shut things down, 0x01 sent, 0x02 for received */ + int shutdown; + /* Timestamps used to calculate the handshake RTT */ + OSSL_TIME ts_msg_write; + OSSL_TIME ts_msg_read; + /* where we are */ + OSSL_STATEM statem; + SSL_EARLY_DATA_STATE early_data_state; + BUF_MEM *init_buf; /* buffer used during init */ + void *init_msg; /* pointer to handshake message body, set by + * tls_get_message_header() */ + size_t init_num; /* amount read/written */ + size_t init_off; /* amount read/written */ + + size_t ssl_pkey_num; + + /* QUIC TLS fields */ + OSSL_QUIC_TLS_CALLBACKS qtcb; + void *qtarg; + QUIC_TLS *qtls; + + struct { + long flags; + unsigned char server_random[SSL3_RANDOM_SIZE]; + unsigned char client_random[SSL3_RANDOM_SIZE]; + + /* used during startup, digest all incoming/outgoing packets */ + BIO *handshake_buffer; + /* + * When handshake digest is determined, buffer is hashed and + * freed and MD_CTX for the required digest is stored here. + */ + EVP_MD_CTX *handshake_dgst; + /* + * Set whenever an expected ChangeCipherSpec message is processed. + * Unset when the peer's Finished message is received. + * Unexpected ChangeCipherSpec messages trigger a fatal alert. + */ + int change_cipher_spec; + int warn_alert; + int fatal_alert; + /* + * we allow one fatal and one warning alert to be outstanding, send close + * alert via the warning alert + */ + int alert_dispatch; + unsigned char send_alert[2]; + /* + * This flag is set when we should renegotiate ASAP, basically when there + * is no more data in the read or write buffers + */ + int renegotiate; + int total_renegotiations; + int num_renegotiations; + int in_read_app_data; + + struct { + /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ + unsigned char finish_md[EVP_MAX_MD_SIZE * 2]; + size_t finish_md_len; + unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2]; + size_t peer_finish_md_len; + size_t message_size; + int message_type; + /* used to hold the new cipher we are going to use */ + const SSL_CIPHER *new_cipher; + EVP_PKEY *pkey; /* holds short lived key exchange key */ + /* holds the array of short lived key exchange key (pointers) */ + EVP_PKEY *ks_pkey[OPENSSL_CLIENT_MAX_KEY_SHARES]; + uint16_t ks_group_id[OPENSSL_CLIENT_MAX_KEY_SHARES]; /* The IDs of the keyshare keys */ + size_t num_ks_pkey; /* how many keyshares are there */ + /* used for certificate requests */ + int cert_req; + /* Certificate types in certificate request message. */ + uint8_t *ctype; + size_t ctype_len; + /* Certificate authorities list peer sent */ + STACK_OF(X509_NAME) *peer_ca_names; + size_t key_block_length; + unsigned char *key_block; + const EVP_CIPHER *new_sym_enc; + const EVP_MD *new_hash; + int new_mac_pkey_type; + size_t new_mac_secret_size; +# ifndef OPENSSL_NO_COMP + const SSL_COMP *new_compression; +# else + char *new_compression; +# endif + int cert_request; + /* Raw values of the cipher list from a client */ + unsigned char *ciphers_raw; + size_t ciphers_rawlen; + /* Temporary storage for premaster secret */ + unsigned char *pms; + size_t pmslen; +# ifndef OPENSSL_NO_PSK + /* Temporary storage for PSK key */ + unsigned char *psk; + size_t psklen; +# endif + /* Signature algorithm we actually use */ + const struct sigalg_lookup_st *sigalg; + /* Pointer to certificate we use */ + CERT_PKEY *cert; + /* + * signature algorithms peer reports: e.g. supported signature + * algorithms extension for server or as part of a certificate + * request for client. + * Keep track of the algorithms for TLS and X.509 usage separately. + */ + uint16_t *peer_sigalgs; + uint16_t *peer_cert_sigalgs; + /* Size of above arrays */ + size_t peer_sigalgslen; + size_t peer_cert_sigalgslen; + /* Sigalg peer actually uses */ + const struct sigalg_lookup_st *peer_sigalg; + /* + * Set if corresponding CERT_PKEY can be used with current + * SSL session: e.g. appropriate curve, signature algorithms etc. + * If zero it can't be used at all. + */ + uint32_t *valid_flags; + /* + * For servers the following masks are for the key and auth algorithms + * that are supported by the certs below. For clients they are masks of + * *disabled* algorithms based on the current session. + */ + uint32_t mask_k; + uint32_t mask_a; + /* + * The following are used by the client to see if a cipher is allowed or + * not. It contains the minimum and maximum version the client's using + * based on what it knows so far. + */ + int min_ver; + int max_ver; + } tmp; + + /* Connection binding to prevent renegotiation attacks */ + unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; + size_t previous_client_finished_len; + unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; + size_t previous_server_finished_len; + int send_connection_binding; + +# ifndef OPENSSL_NO_NEXTPROTONEG + /* + * Set if we saw the Next Protocol Negotiation extension from our peer. + */ + int npn_seen; +# endif + + /* + * ALPN information (we are in the process of transitioning from NPN to + * ALPN.) + */ + + /* + * In a server these point to the selected ALPN protocol after the + * ClientHello has been processed. In a client these contain the protocol + * that the server selected once the ServerHello has been processed. + */ + unsigned char *alpn_selected; + size_t alpn_selected_len; + /* used by the server to know what options were proposed */ + unsigned char *alpn_proposed; + size_t alpn_proposed_len; + /* used by the client to know if it actually sent alpn */ + int alpn_sent; + + /* + * This is set to true if we believe that this is a version of Safari + * running on OS X 10.6 or newer. We wish to know this because Safari on + * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. + */ + char is_probably_safari; + + /* + * Track whether we did a key exchange this handshake or not, so + * SSL_get_negotiated_group() knows whether to fall back to the + * value in the SSL_SESSION. + */ + char did_kex; + /* For clients: peer temporary key */ + /* The group_id for the key exchange key */ + uint16_t group_id; + EVP_PKEY *peer_tmp; + /* The cached group_id candidate for the key exchange key */ + uint16_t group_id_candidate; + } s3; + + struct dtls1_state_st *d1; /* DTLSv1 variables */ + /* callback that allows applications to peek at protocol messages */ + void (*msg_callback) (int write_p, int version, int content_type, + const void *buf, size_t len, SSL *ssl, void *arg); + void *msg_callback_arg; + int hit; /* reusing a previous session */ + X509_VERIFY_PARAM *param; + /* Per connection DANE state */ + SSL_DANE dane; + /* crypto */ + STACK_OF(SSL_CIPHER) *peer_ciphers; + STACK_OF(SSL_CIPHER) *cipher_list; + STACK_OF(SSL_CIPHER) *cipher_list_by_id; + /* TLSv1.3 specific ciphersuites */ + STACK_OF(SSL_CIPHER) *tls13_ciphersuites; + /* + * These are the ones being used, the ones in SSL_SESSION are the ones to + * be 'copied' into these ones + */ + uint32_t mac_flags; + /* + * The TLS1.3 secrets. + */ + unsigned char early_secret[EVP_MAX_MD_SIZE]; + unsigned char handshake_secret[EVP_MAX_MD_SIZE]; + unsigned char master_secret[EVP_MAX_MD_SIZE]; + unsigned char resumption_master_secret[EVP_MAX_MD_SIZE]; + unsigned char client_finished_secret[EVP_MAX_MD_SIZE]; + unsigned char server_finished_secret[EVP_MAX_MD_SIZE]; + unsigned char server_finished_hash[EVP_MAX_MD_SIZE]; + unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE]; + unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE]; + unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE]; + unsigned char exporter_master_secret[EVP_MAX_MD_SIZE]; + unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE]; + + /* session info */ + /* client cert? */ + /* This is used to hold the server certificate used */ + struct cert_st /* CERT */ *cert; + + /* + * The hash of all messages prior to the CertificateVerify, and the length + * of that hash. + */ + unsigned char cert_verify_hash[EVP_MAX_MD_SIZE]; + size_t cert_verify_hash_len; + + /* Flag to indicate whether we should send a HelloRetryRequest or not */ + enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE} + hello_retry_request; + + /* + * the session_id_context is used to ensure sessions are only reused in + * the appropriate context + */ + size_t sid_ctx_length; + unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; + /* This can also be in the session once a session is established */ + SSL_SESSION *session; + /* TLSv1.3 PSK session */ + SSL_SESSION *psksession; + unsigned char *psksession_id; + size_t psksession_id_len; + /* Default generate session ID callback. */ + GEN_SESSION_CB generate_session_id; + /* + * The temporary TLSv1.3 session id. This isn't really a session id at all + * but is a random value sent in the legacy session id field. + */ + unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; + size_t tmp_session_id_len; + /* Used in SSL3 */ + /* + * 0 don't care about verify failure. + * 1 fail if verify fails + */ + uint32_t verify_mode; + /* fail if callback returns 0 */ + int (*verify_callback) (int ok, X509_STORE_CTX *ctx); + /* optional informational callback */ + void (*info_callback) (const SSL *ssl, int type, int val); + /* error bytes to be written */ + int error; + /* actual code */ + int error_code; +# ifndef OPENSSL_NO_PSK + SSL_psk_client_cb_func psk_client_callback; + SSL_psk_server_cb_func psk_server_callback; +# endif + SSL_psk_find_session_cb_func psk_find_session_cb; + SSL_psk_use_session_cb_func psk_use_session_cb; + + /* Verified chain of peer */ + STACK_OF(X509) *verified_chain; + long verify_result; + /* + * What we put in certificate_authorities extension for TLS 1.3 + * (ClientHello and CertificateRequest) or just client cert requests for + * earlier versions. If client_ca_names is populated then it is only used + * for client cert requests, and in preference to ca_names. + */ + STACK_OF(X509_NAME) *ca_names; + STACK_OF(X509_NAME) *client_ca_names; + /* protocol behaviour */ + uint64_t options; + /* API behaviour */ + uint32_t mode; + int min_proto_version; + int max_proto_version; + size_t max_cert_list; + int first_packet; + /* + * What was passed in ClientHello.legacy_version. Used for RSA pre-master + * secret and SSLv3/TLS (<=1.2) rollback check + */ + int client_version; + /* + * If we're using more than one pipeline how should we divide the data + * up between the pipes? + */ + size_t split_send_fragment; + /* + * Maximum amount of data to send in one fragment. actual record size can + * be more than this due to padding and MAC overheads. + */ + size_t max_send_fragment; + /* Up to how many pipelines should we use? If 0 then 1 is assumed */ + size_t max_pipelines; + + struct { + /* Built-in extension flags */ + uint8_t extflags[TLSEXT_IDX_num_builtins]; + /* TLS extension debug callback */ + void (*debug_cb)(SSL *s, int client_server, int type, + const unsigned char *data, int len, void *arg); + void *debug_arg; + char *hostname; + /* certificate status request info */ + /* Status type or -1 if no status type */ + int status_type; + /* Raw extension data, if seen */ + unsigned char *scts; + /* Length of raw extension data, if seen */ + uint16_t scts_len; + /* Expect OCSP CertificateStatus message */ + int status_expected; + + struct { + /* OCSP status request only */ + STACK_OF(OCSP_RESPID) *ids; + X509_EXTENSIONS *exts; + /* OCSP response received or to be sent */ + unsigned char *resp; + size_t resp_len; + } ocsp; + + /* RFC4507 session ticket expected to be received or sent */ + int ticket_expected; + /* TLS 1.3 tickets requested by the application. */ + int extra_tickets_expected; + + /* our list */ + size_t ecpointformats_len; + unsigned char *ecpointformats; + /* peer's list */ + size_t peer_ecpointformats_len; + unsigned char *peer_ecpointformats; + + /* our list */ + size_t supportedgroups_len; + uint16_t *supportedgroups; + /* peer's list */ + size_t peer_supportedgroups_len; + uint16_t *peer_supportedgroups; + + /* key shares */ + size_t keyshares_len; + uint16_t *keyshares; + /* supported groups tuples */ + size_t tuples_len; + size_t *tuples; + + /* TLS Session Ticket extension override */ + TLS_SESSION_TICKET_EXT *session_ticket; + /* TLS Session Ticket extension callback */ + tls_session_ticket_ext_cb_fn session_ticket_cb; + void *session_ticket_cb_arg; + /* TLS pre-shared secret session resumption */ + tls_session_secret_cb_fn session_secret_cb; + void *session_secret_cb_arg; + /* + * For a client, this contains the list of supported protocols in wire + * format. + */ + unsigned char *alpn; + size_t alpn_len; + /* + * Next protocol negotiation. For the client, this is the protocol that + * we sent in NextProtocol and is set when handling ServerHello + * extensions. For a server, this is the client's selected_protocol from + * NextProtocol and is set when handling the NextProtocol message, before + * the Finished message. + */ + unsigned char *npn; + size_t npn_len; + + /* The available PSK key exchange modes */ + int psk_kex_mode; + + /* Set to one if we have negotiated ETM */ + int use_etm; + + /* Are we expecting to receive early data? */ + int early_data; + /* Is the session suitable for early data? */ + int early_data_ok; + + /* May be sent by a server in HRR. Must be echoed back in ClientHello */ + unsigned char *tls13_cookie; + size_t tls13_cookie_len; + /* Have we received a cookie from the client? */ + int cookieok; + + /* + * Maximum Fragment Length as per RFC 4366. + * If this member contains one of the allowed values (1-4) + * then we should include Maximum Fragment Length Negotiation + * extension in Client Hello. + * Please note that value of this member does not have direct + * effect. The actual (binding) value is stored in SSL_SESSION, + * as this extension is optional on server side. + */ + uint8_t max_fragment_len_mode; + + /* + * On the client side the number of ticket identities we sent in the + * ClientHello. On the server side the identity of the ticket we + * selected. + */ + int tick_identity; + + /* This is the list of algorithms the peer supports that we also support */ + int compress_certificate_from_peer[TLSEXT_comp_cert_limit]; + /* indicate that we sent the extension, so we'll accept it */ + int compress_certificate_sent; + + uint8_t client_cert_type; + uint8_t client_cert_type_ctos; + uint8_t server_cert_type; + uint8_t server_cert_type_ctos; + } ext; + + /* + * Parsed form of the ClientHello, kept around across client_hello_cb + * calls. + */ + CLIENTHELLO_MSG *clienthello; + + /*- + * no further mod of servername + * 0 : call the servername extension callback. + * 1 : prepare 2, allow last ack just after in server callback. + * 2 : don't call servername callback, no ack in server hello + */ + int servername_done; +# ifndef OPENSSL_NO_CT + /* + * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. + * If they are not, the connection should be aborted. + */ + ssl_ct_validation_cb ct_validation_callback; + /* User-supplied argument that is passed to the ct_validation_callback */ + void *ct_validation_callback_arg; + /* + * Consolidated stack of SCTs from all sources. + * Lazily populated by CT_get_peer_scts(SSL*) + */ + STACK_OF(SCT) *scts; + /* Have we attempted to find/parse SCTs yet? */ + int scts_parsed; +# endif + SSL_CTX *session_ctx; /* initial ctx, used to store sessions */ +# ifndef OPENSSL_NO_SRTP + /* What we'll do */ + STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; + /* What's been chosen */ + SRTP_PROTECTION_PROFILE *srtp_profile; +# endif + /*- + * 1 if we are renegotiating. + * 2 if we are a server and are inside a handshake + * (i.e. not just sending a HelloRequest) + */ + int renegotiate; + /* If sending a KeyUpdate is pending */ + int key_update; + /* Post-handshake authentication state */ + SSL_PHA_STATE post_handshake_auth; + int pha_enabled; + uint8_t* pha_context; + size_t pha_context_len; + int certreqs_sent; + EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */ + +# ifndef OPENSSL_NO_SRP + /* ctx for SRP authentication */ + SRP_CTX srp_ctx; +# endif + /* + * Callback for disabling session caching and ticket support on a session + * basis, depending on the chosen cipher. + */ + int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); + + /* Record layer data */ + RECORD_LAYER rlayer; + + /* Default password callback. */ + pem_password_cb *default_passwd_callback; + /* Default password callback user data. */ + void *default_passwd_callback_userdata; + /* Async Job info */ + ASYNC_JOB *job; + ASYNC_WAIT_CTX *waitctx; + size_t asyncrw; + + /* + * The maximum number of bytes advertised in session tickets that can be + * sent as early data. + */ + uint32_t max_early_data; + /* + * The maximum number of bytes of early data that a server will tolerate + * (which should be at least as much as max_early_data). + */ + uint32_t recv_max_early_data; + + /* + * The number of bytes of early data received so far. If we accepted early + * data then this is a count of the plaintext bytes. If we rejected it then + * this is a count of the ciphertext bytes. + */ + uint32_t early_data_count; + + /* The number of TLS1.3 tickets to automatically send */ + size_t num_tickets; + /* The number of TLS1.3 tickets actually sent so far */ + size_t sent_tickets; + /* The next nonce value to use when we send a ticket on this connection */ + uint64_t next_ticket_nonce; + + /* Callback to determine if early_data is acceptable or not */ + SSL_allow_early_data_cb_fn allow_early_data_cb; + void *allow_early_data_cb_data; + + /* Callback for SSL async handling */ + SSL_async_callback_fn async_cb; + void *async_cb_arg; + + /* + * Signature algorithms shared by client and server: cached because these + * are used most often. + */ + const struct sigalg_lookup_st **shared_sigalgs; + size_t shared_sigalgslen; + +#ifndef OPENSSL_NO_COMP_ALG + /* certificate compression preferences */ + int cert_comp_prefs[TLSEXT_comp_cert_limit]; +#endif + + /* Certificate Type stuff - for RPK vs X.509 */ + unsigned char *client_cert_type; + size_t client_cert_type_len; + unsigned char *server_cert_type; + size_t server_cert_type_len; +}; + +/* + * Structure containing table entry of values associated with the signature + * algorithms (signature scheme) extension +*/ +typedef struct sigalg_lookup_st { + /* TLS 1.3 signature scheme name */ + const char *name; + /* TLS 1.2 signature scheme name */ + const char *name12; + /* Raw value used in extension */ + uint16_t sigalg; + /* NID of hash algorithm or NID_undef if no hash */ + int hash; + /* Index of hash algorithm or -1 if no hash algorithm */ + int hash_idx; + /* NID of signature algorithm */ + int sig; + /* Index of signature algorithm */ + int sig_idx; + /* Combined hash and signature NID, if any */ + int sigandhash; + /* Required public key curve (ECDSA only) */ + int curve; + /* Whether this signature algorithm is actually available for use */ + int available; + /* Whether this signature algorithm is by default advertised */ + int advertise; + /* Supported protocol ranges */ + int mintls; + int maxtls; + int mindtls; + int maxdtls; +} SIGALG_LOOKUP; + +/* DTLS structures */ + +# ifndef OPENSSL_NO_SCTP +# define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP" +# endif + +/* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */ +# define DTLS1_MAX_MTU_OVERHEAD 48 + +struct dtls1_retransmit_state { + const OSSL_RECORD_METHOD *wrlmethod; + OSSL_RECORD_LAYER *wrl; +}; + +struct hm_header_st { + unsigned char type; + size_t msg_len; + unsigned short seq; + size_t frag_off; + size_t frag_len; + unsigned int is_ccs; + struct dtls1_retransmit_state saved_retransmit_state; +}; + +typedef struct hm_fragment_st { + struct hm_header_st msg_header; + unsigned char *fragment; + unsigned char *reassembly; +} hm_fragment; + +typedef struct pqueue_st pqueue; +typedef struct pitem_st pitem; + +struct pitem_st { + unsigned char priority[8]; /* 64-bit value in big-endian encoding */ + void *data; + pitem *next; +}; + +typedef struct pitem_st *piterator; + +pitem *pitem_new(unsigned char *prio64be, void *data); +void pitem_free(pitem *item); +pqueue *pqueue_new(void); +void pqueue_free(pqueue *pq); +pitem *pqueue_insert(pqueue *pq, pitem *item); +pitem *pqueue_peek(pqueue *pq); +pitem *pqueue_pop(pqueue *pq); +pitem *pqueue_find(pqueue *pq, unsigned char *prio64be); +pitem *pqueue_iterator(pqueue *pq); +pitem *pqueue_next(piterator *iter); +size_t pqueue_size(pqueue *pq); + +typedef struct dtls1_state_st { + unsigned char cookie[DTLS1_COOKIE_LENGTH]; + size_t cookie_len; + unsigned int cookie_verified; + /* handshake message numbers */ + unsigned short handshake_write_seq; + unsigned short next_handshake_write_seq; + unsigned short handshake_read_seq; + /* Buffered handshake messages */ + pqueue *buffered_messages; + /* Buffered (sent) handshake records */ + pqueue *sent_messages; + size_t link_mtu; /* max on-the-wire DTLS packet size */ + size_t mtu; /* max DTLS packet size */ + struct hm_header_st w_msg_hdr; + struct hm_header_st r_msg_hdr; + /* Number of alerts received so far */ + unsigned int timeout_num_alerts; + /* + * Indicates when the last handshake msg sent will timeout + */ + OSSL_TIME next_timeout; + /* Timeout duration */ + unsigned int timeout_duration_us; + + unsigned int retransmitting; +# ifndef OPENSSL_NO_SCTP + int shutdown_received; +# endif + + DTLS_timer_cb timer_cb; + +} DTLS1_STATE; + +/* + * From ECC-TLS draft, used in encoding the curve type in ECParameters + */ +# define EXPLICIT_PRIME_CURVE_TYPE 1 +# define EXPLICIT_CHAR2_CURVE_TYPE 2 +# define NAMED_CURVE_TYPE 3 + +# ifndef OPENSSL_NO_COMP_ALG +struct ossl_comp_cert_st { + unsigned char *data; + size_t len; + size_t orig_len; + CRYPTO_REF_COUNT references; + int alg; +}; +typedef struct ossl_comp_cert_st OSSL_COMP_CERT; + +void OSSL_COMP_CERT_free(OSSL_COMP_CERT *c); +int OSSL_COMP_CERT_up_ref(OSSL_COMP_CERT *c); +# endif + +struct cert_pkey_st { + X509 *x509; + EVP_PKEY *privatekey; + /* Chain for this certificate */ + STACK_OF(X509) *chain; + /*- + * serverinfo data for this certificate. The data is in TLS Extension + * wire format, specifically it's a series of records like: + * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension) + * uint16_t length; + * uint8_t data[length]; + */ + unsigned char *serverinfo; + size_t serverinfo_length; +# ifndef OPENSSL_NO_COMP_ALG + /* Compressed certificate data - index 0 is unused */ + OSSL_COMP_CERT *comp_cert[TLSEXT_comp_cert_limit]; + int cert_comp_used; +# endif +}; +/* Retrieve Suite B flags */ +# define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS) +/* Uses to check strict mode: suite B modes are always strict */ +# define SSL_CERT_FLAGS_CHECK_TLS_STRICT \ + (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT) + +typedef enum { + ENDPOINT_CLIENT = 0, + ENDPOINT_SERVER, + ENDPOINT_BOTH +} ENDPOINT; + + +typedef struct { + unsigned short ext_type; + ENDPOINT role; + /* The context which this extension applies to */ + unsigned int context; + /* + * Per-connection flags relating to this extension type: not used if + * part of an SSL_CTX structure. + */ + uint32_t ext_flags; + SSL_custom_ext_add_cb_ex add_cb; + SSL_custom_ext_free_cb_ex free_cb; + void *add_arg; + SSL_custom_ext_parse_cb_ex parse_cb; + void *parse_arg; +} custom_ext_method; + +/* ext_flags values */ + +/* + * Indicates an extension has been received. Used to check for unsolicited or + * duplicate extensions. + */ +# define SSL_EXT_FLAG_RECEIVED 0x1 +/* + * Indicates an extension has been sent: used to enable sending of + * corresponding ServerHello extension. + */ +# define SSL_EXT_FLAG_SENT 0x2 +/* + * Indicates an extension that was set on SSL object and needs to be + * preserved when switching SSL contexts. + */ +# define SSL_EXT_FLAG_CONN 0x4 + +typedef struct { + custom_ext_method *meths; + size_t meths_count; +} custom_ext_methods; + +typedef struct cert_st { + /* Current active set */ + /* + * ALWAYS points to an element of the pkeys array + * Probably it would make more sense to store + * an index, not a pointer. + */ + CERT_PKEY *key; + + EVP_PKEY *dh_tmp; + DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize); + int dh_tmp_auto; + /* Flags related to certificates */ + uint32_t cert_flags; + CERT_PKEY *pkeys; + size_t ssl_pkey_num; + /* Custom certificate types sent in certificate request message. */ + uint8_t *ctype; + size_t ctype_len; + /* + * supported signature algorithms. When set on a client this is sent in + * the client hello as the supported signature algorithms extension. For + * servers it represents the signature algorithms we are willing to use. + */ + uint16_t *conf_sigalgs; + /* Size of above array */ + size_t conf_sigalgslen; + /* + * Client authentication signature algorithms, if not set then uses + * conf_sigalgs. On servers these will be the signature algorithms sent + * to the client in a certificate request for TLS 1.2. On a client this + * represents the signature algorithms we are willing to use for client + * authentication. + */ + uint16_t *client_sigalgs; + /* Size of above array */ + size_t client_sigalgslen; + /* + * Certificate setup callback: if set is called whenever a certificate + * may be required (client or server). the callback can then examine any + * appropriate parameters and setup any certificates required. This + * allows advanced applications to select certificates on the fly: for + * example based on supported signature algorithms or curves. + */ + int (*cert_cb) (SSL *ssl, void *arg); + void *cert_cb_arg; + /* + * Optional X509_STORE for chain building or certificate validation If + * NULL the parent SSL_CTX store is used instead. + */ + X509_STORE *chain_store; + X509_STORE *verify_store; + /* Custom extensions */ + custom_ext_methods custext; + /* Security callback */ + int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid, + void *other, void *ex); + /* Security level */ + int sec_level; + void *sec_ex; +# ifndef OPENSSL_NO_PSK + /* If not NULL psk identity hint to use for servers */ + char *psk_identity_hint; +# endif + CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */ +} CERT; + +/* + * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit + * of a mess of functions, but hell, think of it as an opaque structure :-) + */ +typedef struct ssl3_enc_method { + int (*setup_key_block) (SSL_CONNECTION *); + int (*generate_master_secret) (SSL_CONNECTION *, unsigned char *, + unsigned char *, size_t, size_t *); + int (*change_cipher_state) (SSL_CONNECTION *, int); + size_t (*final_finish_mac) (SSL_CONNECTION *, const char *, size_t, + unsigned char *); + const char *client_finished_label; + size_t client_finished_label_len; + const char *server_finished_label; + size_t server_finished_label_len; + int (*alert_value) (int); + int (*export_keying_material) (SSL_CONNECTION *, unsigned char *, size_t, + const char *, size_t, + const unsigned char *, size_t, + int use_context); + /* Various flags indicating protocol version requirements */ + uint32_t enc_flags; + /* Set the handshake header */ + int (*set_handshake_header) (SSL_CONNECTION *s, WPACKET *pkt, int type); + /* Close construction of the handshake message */ + int (*close_construct_packet) (SSL_CONNECTION *s, WPACKET *pkt, int htype); + /* Write out handshake message */ + int (*do_write) (SSL_CONNECTION *s); +} SSL3_ENC_METHOD; + +# define ssl_set_handshake_header(s, pkt, htype) \ + SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->set_handshake_header((s), (pkt), (htype)) +# define ssl_close_construct_packet(s, pkt, htype) \ + SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->close_construct_packet((s), (pkt), (htype)) +# define ssl_do_write(s) SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->do_write(s) + +/* Values for enc_flags */ + +/* Uses signature algorithms extension */ +# define SSL_ENC_FLAG_SIGALGS 0x2 +/* Uses SHA256 default PRF */ +# define SSL_ENC_FLAG_SHA256_PRF 0x4 +/* Is DTLS */ +# define SSL_ENC_FLAG_DTLS 0x8 +/* + * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may + * apply to others in future. + */ +# define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10 + +typedef enum downgrade_en { + DOWNGRADE_NONE, + DOWNGRADE_TO_1_2, + DOWNGRADE_TO_1_1 +} DOWNGRADE; + +/* + * Dummy status type for the status_type extension. Indicates no status type + * set + */ +#define TLSEXT_STATUSTYPE_nothing -1 + +/* Sigalgs values */ +#define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403 +#define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503 +#define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603 +#define TLSEXT_SIGALG_ecdsa_sha224 0x0303 +#define TLSEXT_SIGALG_ecdsa_sha1 0x0203 +#define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804 +#define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805 +#define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806 +#define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809 +#define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a +#define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b +#define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401 +#define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501 +#define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601 +#define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301 +#define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201 +#define TLSEXT_SIGALG_dsa_sha256 0x0402 +#define TLSEXT_SIGALG_dsa_sha384 0x0502 +#define TLSEXT_SIGALG_dsa_sha512 0x0602 +#define TLSEXT_SIGALG_dsa_sha224 0x0302 +#define TLSEXT_SIGALG_dsa_sha1 0x0202 +#define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840 +#define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841 +#define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee +#define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef +#define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded + +#define TLSEXT_SIGALG_ed25519 0x0807 +#define TLSEXT_SIGALG_ed448 0x0808 +#define TLSEXT_SIGALG_ecdsa_brainpoolP256r1_sha256 0x081a +#define TLSEXT_SIGALG_ecdsa_brainpoolP384r1_sha384 0x081b +#define TLSEXT_SIGALG_ecdsa_brainpoolP512r1_sha512 0x081c +#define TLSEXT_SIGALG_mldsa44 0x0904 +#define TLSEXT_SIGALG_mldsa65 0x0905 +#define TLSEXT_SIGALG_mldsa87 0x0906 + +/* Sigalgs names */ +#define TLSEXT_SIGALG_ecdsa_secp256r1_sha256_name "ecdsa_secp256r1_sha256" +#define TLSEXT_SIGALG_ecdsa_secp384r1_sha384_name "ecdsa_secp384r1_sha384" +#define TLSEXT_SIGALG_ecdsa_secp521r1_sha512_name "ecdsa_secp521r1_sha512" +#define TLSEXT_SIGALG_ecdsa_sha224_name "ecdsa_sha224" +#define TLSEXT_SIGALG_ecdsa_sha1_name "ecdsa_sha1" +#define TLSEXT_SIGALG_rsa_pss_rsae_sha256_name "rsa_pss_rsae_sha256" +#define TLSEXT_SIGALG_rsa_pss_rsae_sha384_name "rsa_pss_rsae_sha384" +#define TLSEXT_SIGALG_rsa_pss_rsae_sha512_name "rsa_pss_rsae_sha512" +#define TLSEXT_SIGALG_rsa_pss_pss_sha256_name "rsa_pss_pss_sha256" +#define TLSEXT_SIGALG_rsa_pss_pss_sha384_name "rsa_pss_pss_sha384" +#define TLSEXT_SIGALG_rsa_pss_pss_sha512_name "rsa_pss_pss_sha512" +#define TLSEXT_SIGALG_rsa_pkcs1_sha256_name "rsa_pkcs1_sha256" +#define TLSEXT_SIGALG_rsa_pkcs1_sha384_name "rsa_pkcs1_sha384" +#define TLSEXT_SIGALG_rsa_pkcs1_sha512_name "rsa_pkcs1_sha512" +#define TLSEXT_SIGALG_rsa_pkcs1_sha224_name "rsa_pkcs1_sha224" +#define TLSEXT_SIGALG_rsa_pkcs1_sha1_name "rsa_pkcs1_sha1" +#define TLSEXT_SIGALG_dsa_sha256_name "dsa_sha256" +#define TLSEXT_SIGALG_dsa_sha384_name "dsa_sha384" +#define TLSEXT_SIGALG_dsa_sha512_name "dsa_sha512" +#define TLSEXT_SIGALG_dsa_sha224_name "dsa_sha224" +#define TLSEXT_SIGALG_dsa_sha1_name "dsa_sha1" +#define TLSEXT_SIGALG_gostr34102012_256_intrinsic_name "gostr34102012_256" +#define TLSEXT_SIGALG_gostr34102012_512_intrinsic_name "gostr34102012_512" +#define TLSEXT_SIGALG_gostr34102012_256_intrinsic_alias "gost2012_256" +#define TLSEXT_SIGALG_gostr34102012_512_intrinsic_alias "gost2012_512" +#define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256_name "gost2012_256" +#define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512_name "gost2012_512" +#define TLSEXT_SIGALG_gostr34102001_gostr3411_name "gost2001_gost94" + +#define TLSEXT_SIGALG_ed25519_name "ed25519" +#define TLSEXT_SIGALG_ed448_name "ed448" +#define TLSEXT_SIGALG_ecdsa_brainpoolP256r1_sha256_name "ecdsa_brainpoolP256r1tls13_sha256" +#define TLSEXT_SIGALG_ecdsa_brainpoolP384r1_sha384_name "ecdsa_brainpoolP384r1tls13_sha384" +#define TLSEXT_SIGALG_ecdsa_brainpoolP512r1_sha512_name "ecdsa_brainpoolP512r1tls13_sha512" +#define TLSEXT_SIGALG_ecdsa_brainpoolP256r1_sha256_alias "ecdsa_brainpoolP256r1_sha256" +#define TLSEXT_SIGALG_ecdsa_brainpoolP384r1_sha384_alias "ecdsa_brainpoolP384r1_sha384" +#define TLSEXT_SIGALG_ecdsa_brainpoolP512r1_sha512_alias "ecdsa_brainpoolP512r1_sha512" +#define TLSEXT_SIGALG_mldsa44_name "mldsa44" +#define TLSEXT_SIGALG_mldsa65_name "mldsa65" +#define TLSEXT_SIGALG_mldsa87_name "mldsa87" + +/* Known PSK key exchange modes */ +#define TLSEXT_KEX_MODE_KE 0x00 +#define TLSEXT_KEX_MODE_KE_DHE 0x01 + +/* + * Internal representations of key exchange modes + */ +#define TLSEXT_KEX_MODE_FLAG_NONE 0 +#define TLSEXT_KEX_MODE_FLAG_KE 1 +#define TLSEXT_KEX_MODE_FLAG_KE_DHE 2 + +#define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \ + s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS) + +/* TLSv1.3 downgrade protection sentinel values */ +extern const unsigned char tls11downgrade[8]; +extern const unsigned char tls12downgrade[8]; + +extern const SSL3_ENC_METHOD ssl3_undef_enc_method; + +__owur const SSL_METHOD *sslv3_method(void); +__owur const SSL_METHOD *sslv3_server_method(void); +__owur const SSL_METHOD *sslv3_client_method(void); +__owur const SSL_METHOD *tlsv1_method(void); +__owur const SSL_METHOD *tlsv1_server_method(void); +__owur const SSL_METHOD *tlsv1_client_method(void); +__owur const SSL_METHOD *tlsv1_1_method(void); +__owur const SSL_METHOD *tlsv1_1_server_method(void); +__owur const SSL_METHOD *tlsv1_1_client_method(void); +__owur const SSL_METHOD *tlsv1_2_method(void); +__owur const SSL_METHOD *tlsv1_2_server_method(void); +__owur const SSL_METHOD *tlsv1_2_client_method(void); +__owur const SSL_METHOD *tlsv1_3_method(void); +__owur const SSL_METHOD *tlsv1_3_server_method(void); +__owur const SSL_METHOD *tlsv1_3_client_method(void); +__owur const SSL_METHOD *dtlsv1_method(void); +__owur const SSL_METHOD *dtlsv1_server_method(void); +__owur const SSL_METHOD *dtlsv1_client_method(void); +__owur const SSL_METHOD *dtls_bad_ver_client_method(void); +__owur const SSL_METHOD *dtlsv1_2_method(void); +__owur const SSL_METHOD *dtlsv1_2_server_method(void); +__owur const SSL_METHOD *dtlsv1_2_client_method(void); + +extern const SSL3_ENC_METHOD TLSv1_enc_data; +extern const SSL3_ENC_METHOD TLSv1_1_enc_data; +extern const SSL3_ENC_METHOD TLSv1_2_enc_data; +extern const SSL3_ENC_METHOD TLSv1_3_enc_data; +extern const SSL3_ENC_METHOD SSLv3_enc_data; +extern const SSL3_ENC_METHOD DTLSv1_enc_data; +extern const SSL3_ENC_METHOD DTLSv1_2_enc_data; + +/* + * Flags for SSL methods + */ +# define SSL_METHOD_NO_FIPS (1U<<0) +# define SSL_METHOD_NO_SUITEB (1U<<1) + +# define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \ + s_connect, enc_data) \ +const SSL_METHOD *func_name(void) \ + { \ + static const SSL_METHOD func_name##_data= { \ + version, \ + flags, \ + mask, \ + ossl_ssl_connection_new, \ + ossl_ssl_connection_free, \ + ossl_ssl_connection_reset, \ + tls1_new, \ + tls1_clear, \ + tls1_free, \ + s_accept, \ + s_connect, \ + ssl3_read, \ + ssl3_peek, \ + ssl3_write, \ + ssl3_shutdown, \ + ssl3_renegotiate, \ + ssl3_renegotiate_check, \ + ssl3_read_bytes, \ + ssl3_write_bytes, \ + ssl3_dispatch_alert, \ + ssl3_ctrl, \ + ssl3_ctx_ctrl, \ + ssl3_get_cipher_by_char, \ + ssl3_put_cipher_by_char, \ + ssl3_pending, \ + ssl3_num_ciphers, \ + ssl3_get_cipher, \ + tls1_default_timeout, \ + &enc_data, \ + ssl_undefined_void_function, \ + ssl3_callback_ctrl, \ + ssl3_ctx_callback_ctrl, \ + }; \ + return &func_name##_data; \ + } + +# define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \ +const SSL_METHOD *func_name(void) \ + { \ + static const SSL_METHOD func_name##_data= { \ + SSL3_VERSION, \ + SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \ + SSL_OP_NO_SSLv3, \ + ossl_ssl_connection_new, \ + ossl_ssl_connection_free, \ + ossl_ssl_connection_reset, \ + ssl3_new, \ + ssl3_clear, \ + ssl3_free, \ + s_accept, \ + s_connect, \ + ssl3_read, \ + ssl3_peek, \ + ssl3_write, \ + ssl3_shutdown, \ + ssl3_renegotiate, \ + ssl3_renegotiate_check, \ + ssl3_read_bytes, \ + ssl3_write_bytes, \ + ssl3_dispatch_alert, \ + ssl3_ctrl, \ + ssl3_ctx_ctrl, \ + ssl3_get_cipher_by_char, \ + ssl3_put_cipher_by_char, \ + ssl3_pending, \ + ssl3_num_ciphers, \ + ssl3_get_cipher, \ + ssl3_default_timeout, \ + &SSLv3_enc_data, \ + ssl_undefined_void_function, \ + ssl3_callback_ctrl, \ + ssl3_ctx_callback_ctrl, \ + }; \ + return &func_name##_data; \ + } + +# define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \ + s_connect, enc_data) \ +const SSL_METHOD *func_name(void) \ + { \ + static const SSL_METHOD func_name##_data= { \ + version, \ + flags, \ + mask, \ + ossl_ssl_connection_new, \ + ossl_ssl_connection_free, \ + ossl_ssl_connection_reset, \ + dtls1_new, \ + dtls1_clear, \ + dtls1_free, \ + s_accept, \ + s_connect, \ + ssl3_read, \ + ssl3_peek, \ + ssl3_write, \ + dtls1_shutdown, \ + ssl3_renegotiate, \ + ssl3_renegotiate_check, \ + dtls1_read_bytes, \ + dtls1_write_app_data_bytes, \ + dtls1_dispatch_alert, \ + dtls1_ctrl, \ + ssl3_ctx_ctrl, \ + ssl3_get_cipher_by_char, \ + ssl3_put_cipher_by_char, \ + ssl3_pending, \ + ssl3_num_ciphers, \ + ssl3_get_cipher, \ + dtls1_default_timeout, \ + &enc_data, \ + ssl_undefined_void_function, \ + ssl3_callback_ctrl, \ + ssl3_ctx_callback_ctrl, \ + }; \ + return &func_name##_data; \ + } + +struct openssl_ssl_test_functions { + int (*p_ssl_init_wbio_buffer) (SSL_CONNECTION *s); +}; + +const char *ssl_protocol_to_string(int version); + +static ossl_inline int tls12_rpk_and_privkey(const SSL_CONNECTION *sc, int idx) +{ + /* + * This is to check for special cases when using RPK with just + * a private key, and NO CERTIFICATE + */ + return ((sc->server && sc->ext.server_cert_type == TLSEXT_cert_type_rpk) + || (!sc->server && sc->ext.client_cert_type == TLSEXT_cert_type_rpk)) + && sc->cert->pkeys[idx].privatekey != NULL + && sc->cert->pkeys[idx].x509 == NULL; +} + +static ossl_inline int ssl_has_cert_type(const SSL_CONNECTION *sc, unsigned char ct) +{ + unsigned char *ptr; + size_t len; + + if (sc->server) { + ptr = sc->server_cert_type; + len = sc->server_cert_type_len; + } else { + ptr = sc->client_cert_type; + len = sc->client_cert_type_len; + } + + if (ptr == NULL) + return 0; + + return memchr(ptr, ct, len) != NULL; +} + +/* Returns true if certificate and private key for 'idx' are present */ +static ossl_inline int ssl_has_cert(const SSL_CONNECTION *s, int idx) +{ + if (idx < 0 || idx >= (int)s->ssl_pkey_num) + return 0; + + /* If RPK is enabled for this SSL... only require private key */ + if (ssl_has_cert_type(s, TLSEXT_cert_type_rpk)) + return s->cert->pkeys[idx].privatekey != NULL; + + return s->cert->pkeys[idx].x509 != NULL + && s->cert->pkeys[idx].privatekey != NULL; +} + +static ossl_inline void tls1_get_peer_groups(SSL_CONNECTION *s, + const uint16_t **pgroups, + size_t *pgroupslen) +{ + *pgroups = s->ext.peer_supportedgroups; + *pgroupslen = s->ext.peer_supportedgroups_len; +} + +# ifndef OPENSSL_UNIT_TEST + +__owur int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method, + int type); +__owur SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, SSL *user_ssl, + const SSL_METHOD *method); +__owur SSL *ossl_ssl_connection_new(SSL_CTX *ctx); +void ossl_ssl_connection_free(SSL *ssl); +__owur int ossl_ssl_connection_reset(SSL *ssl); + +__owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes); +__owur int ssl_write_internal(SSL *s, const void *buf, size_t num, + uint64_t flags, size_t *written); +int ssl_clear_bad_session(SSL_CONNECTION *s); +__owur CERT *ssl_cert_new(size_t ssl_pkey_num); +__owur CERT *ssl_cert_dup(CERT *cert); +void ssl_cert_clear_certs(CERT *c); +void ssl_cert_free(CERT *c); +__owur int ssl_generate_session_id(SSL_CONNECTION *s, SSL_SESSION *ss); +__owur int ssl_get_new_session(SSL_CONNECTION *s, int session); +__owur SSL_SESSION *lookup_sess_in_cache(SSL_CONNECTION *s, + const unsigned char *sess_id, + size_t sess_id_len); +__owur int ssl_get_prev_session(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello); +__owur SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket); +__owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); +DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); +__owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, + const SSL_CIPHER *const *bp); +__owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx, + STACK_OF(SSL_CIPHER) *tls13_ciphersuites, + STACK_OF(SSL_CIPHER) **cipher_list, + STACK_OF(SSL_CIPHER) **cipher_list_by_id, + const char *rule_str, + CERT *c); +__owur int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, + int sslv2format); +__owur int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites, + STACK_OF(SSL_CIPHER) **skp, + STACK_OF(SSL_CIPHER) **scsvs, int sslv2format, + int fatal); +void ssl_update_cache(SSL_CONNECTION *s, int mode); +__owur int ssl_cipher_get_evp_cipher(SSL_CTX *ctx, const SSL_CIPHER *sslc, + const EVP_CIPHER **enc); +__owur int ssl_cipher_get_evp_md_mac(SSL_CTX *ctx, const SSL_CIPHER *sslc, + const EVP_MD **md, + int *mac_pkey_type, size_t *mac_secret_size); +__owur int ssl_cipher_get_evp(SSL_CTX *ctxc, const SSL_SESSION *s, + const EVP_CIPHER **enc, const EVP_MD **md, + int *mac_pkey_type, size_t *mac_secret_size, + SSL_COMP **comp, int use_etm); +__owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, + size_t *int_overhead, size_t *blocksize, + size_t *ext_overhead); +__owur int ssl_cert_is_disabled(SSL_CTX *ctx, size_t idx); +__owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL_CONNECTION *ssl, + const unsigned char *ptr, + int all); +__owur int ssl_cert_set0_chain(SSL_CONNECTION *s, SSL_CTX *ctx, + STACK_OF(X509) *chain); +__owur int ssl_cert_set1_chain(SSL_CONNECTION *s, SSL_CTX *ctx, + STACK_OF(X509) *chain); +__owur int ssl_cert_add0_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x); +__owur int ssl_cert_add1_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x); +__owur int ssl_cert_select_current(CERT *c, X509 *x); +__owur int ssl_cert_set_current(CERT *c, long arg); +void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg); + +__owur int ssl_verify_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk); +__owur int ssl_verify_rpk(SSL_CONNECTION *s, EVP_PKEY *rpk); +__owur int ssl_build_cert_chain(SSL_CONNECTION *s, SSL_CTX *ctx, int flags); +__owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, + int ref); +__owur int ssl_cert_get_cert_store(CERT *c, X509_STORE **pstore, int chain); + +__owur int ssl_security(const SSL_CONNECTION *s, int op, int bits, int nid, + void *other); +__owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, + void *other); +int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp); + +__owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx, SSL_CTX *ctx); +__owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, + size_t *pidx, + SSL_CTX *ctx); +__owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx, SSL_CTX *ctx); + +int ssl_undefined_function(SSL *s); +__owur int ssl_undefined_void_function(void); +__owur int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s, + const unsigned char **serverinfo, + size_t *serverinfo_length); +void ssl_set_masks(SSL_CONNECTION *s); +__owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *sc); +__owur int ssl_x509err2alert(int type); +void ssl_sort_cipher_list(void); +int ssl_load_ciphers(SSL_CTX *ctx); +__owur int ssl_setup_sigalgs(SSL_CTX *ctx); +int ssl_load_groups(SSL_CTX *ctx); +int ssl_load_sigalgs(SSL_CTX *ctx); +__owur int ssl_fill_hello_random(SSL_CONNECTION *s, int server, + unsigned char *field, size_t len, + DOWNGRADE dgrd); +__owur int ssl_generate_master_secret(SSL_CONNECTION *s, unsigned char *pms, + size_t pmslen, int free_pms); +__owur EVP_PKEY *ssl_generate_pkey(SSL_CONNECTION *s, EVP_PKEY *pm); +__owur int ssl_gensecret(SSL_CONNECTION *s, unsigned char *pms, size_t pmslen); +__owur int ssl_derive(SSL_CONNECTION *s, EVP_PKEY *privkey, EVP_PKEY *pubkey, + int genmaster); +__owur int ssl_decapsulate(SSL_CONNECTION *s, EVP_PKEY *privkey, + const unsigned char *ct, size_t ctlen, + int gensecret); +__owur int ssl_encapsulate(SSL_CONNECTION *s, EVP_PKEY *pubkey, + unsigned char **ctp, size_t *ctlenp, + int gensecret); +__owur EVP_PKEY *ssl_dh_to_pkey(DH *dh); +__owur int ssl_set_tmp_ecdh_groups(uint16_t **pext, size_t *pextlen, + uint16_t **ksext, size_t *ksextlen, + size_t **tplext, size_t *tplextlen, + void *key); +__owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc); +__owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc); + +__owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id); +__owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname); +__owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); +__owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt, + size_t *len); +int ssl3_init_finished_mac(SSL_CONNECTION *s); +__owur int ssl3_setup_key_block(SSL_CONNECTION *s); +__owur int ssl3_change_cipher_state(SSL_CONNECTION *s, int which); +void ssl3_cleanup_key_block(SSL_CONNECTION *s); +__owur int ssl3_do_write(SSL_CONNECTION *s, uint8_t type); +int ssl3_send_alert(SSL_CONNECTION *s, int level, int desc); +__owur int ssl3_generate_master_secret(SSL_CONNECTION *s, unsigned char *out, + unsigned char *p, size_t len, + size_t *secret_size); +__owur int ssl3_get_req_cert_type(SSL_CONNECTION *s, WPACKET *pkt); +__owur int ssl3_num_ciphers(void); +__owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u); +int ssl3_renegotiate(SSL *ssl); +int ssl3_renegotiate_check(SSL *ssl, int initok); +void ssl3_digest_master_key_set_params(const SSL_SESSION *session, + OSSL_PARAM params[]); +__owur int ssl3_dispatch_alert(SSL *s); +__owur size_t ssl3_final_finish_mac(SSL_CONNECTION *s, const char *sender, + size_t slen, unsigned char *p); +__owur int ssl3_finish_mac(SSL_CONNECTION *s, const unsigned char *buf, + size_t len); +void ssl3_free_digest_list(SSL_CONNECTION *s); +__owur unsigned long ssl3_output_cert_chain(SSL_CONNECTION *s, WPACKET *pkt, + CERT_PKEY *cpk, int for_comp); +__owur const SSL_CIPHER *ssl3_choose_cipher(SSL_CONNECTION *s, + STACK_OF(SSL_CIPHER) *clnt, + STACK_OF(SSL_CIPHER) *srvr); +__owur int ssl3_digest_cached_records(SSL_CONNECTION *s, int keep); +__owur int ssl3_new(SSL *s); +void ssl3_free(SSL *s); +__owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes); +__owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes); +__owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written); +__owur int ssl3_shutdown(SSL *s); +int ssl3_clear(SSL *s); +__owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); +__owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); +__owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void)); +__owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void)); + +__owur int ssl3_do_change_cipher_spec(SSL_CONNECTION *s); +__owur OSSL_TIME ssl3_default_timeout(void); + +__owur int ssl3_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt, + int htype); +__owur int tls_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype); +__owur int tls_setup_handshake(SSL_CONNECTION *s); +__owur int dtls1_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt, int htype); +__owur int dtls1_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype); +__owur int ssl3_handshake_write(SSL_CONNECTION *s); + +__owur int ssl_allow_compression(SSL_CONNECTION *s); + +__owur int ssl_version_cmp(const SSL_CONNECTION *s, int versiona, int versionb); +__owur int ssl_version_supported(const SSL_CONNECTION *s, int version, + const SSL_METHOD **meth); + +__owur int ssl_set_client_hello_version(SSL_CONNECTION *s); +__owur int ssl_check_version_downgrade(SSL_CONNECTION *s); +__owur int ssl_set_version_bound(int method_version, int version, int *bound); +__owur int ssl_choose_server_version(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello, + DOWNGRADE *dgrd); +__owur int ssl_choose_client_version(SSL_CONNECTION *s, int version, + RAW_EXTENSION *extensions); +__owur int ssl_get_min_max_version(const SSL_CONNECTION *s, int *min_version, + int *max_version, int *real_max); + +__owur OSSL_TIME tls1_default_timeout(void); +__owur int dtls1_do_write(SSL_CONNECTION *s, uint8_t type); +void dtls1_set_message_header(SSL_CONNECTION *s, + unsigned char mt, + size_t len, + size_t frag_off, size_t frag_len); + +int dtls1_write_app_data_bytes(SSL *s, uint8_t type, const void *buf_, + size_t len, size_t *written); + +__owur int dtls1_read_failed(SSL_CONNECTION *s, int code); +__owur int dtls1_buffer_message(SSL_CONNECTION *s, int ccs); +__owur int dtls1_retransmit_message(SSL_CONNECTION *s, unsigned short seq, + int *found); +__owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs); +int dtls1_retransmit_buffered_messages(SSL_CONNECTION *s); +void dtls1_clear_received_buffer(SSL_CONNECTION *s); +void dtls1_clear_sent_buffer(SSL_CONNECTION *s); +void dtls1_get_message_header(const unsigned char *data, + struct hm_header_st *msg_hdr); +__owur OSSL_TIME dtls1_default_timeout(void); +__owur int dtls1_get_timeout(const SSL_CONNECTION *s, OSSL_TIME *timeleft); +__owur int dtls1_check_timeout_num(SSL_CONNECTION *s); +__owur int dtls1_handle_timeout(SSL_CONNECTION *s); +void dtls1_start_timer(SSL_CONNECTION *s); +void dtls1_stop_timer(SSL_CONNECTION *s); +__owur int dtls1_is_timer_expired(SSL_CONNECTION *s); +__owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie, + size_t cookie_len); +__owur size_t dtls1_min_mtu(SSL_CONNECTION *s); +void dtls1_hm_fragment_free(hm_fragment *frag); +__owur int dtls1_query_mtu(SSL_CONNECTION *s); + +__owur int tls1_new(SSL *s); +void tls1_free(SSL *s); +int tls1_clear(SSL *s); + +__owur int dtls1_new(SSL *s); +void dtls1_free(SSL *s); +int dtls1_clear(SSL *s); +long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); +__owur int dtls1_shutdown(SSL *s); + +__owur int dtls1_dispatch_alert(SSL *s); + +__owur int ssl_init_wbio_buffer(SSL_CONNECTION *s); +int ssl_free_wbio_buffer(SSL_CONNECTION *s); + +__owur int tls1_change_cipher_state(SSL_CONNECTION *s, int which); +__owur int tls1_setup_key_block(SSL_CONNECTION *s); +__owur size_t tls1_final_finish_mac(SSL_CONNECTION *s, const char *str, + size_t slen, unsigned char *p); +__owur int tls1_generate_master_secret(SSL_CONNECTION *s, unsigned char *out, + unsigned char *p, size_t len, + size_t *secret_size); +__owur int tls13_setup_key_block(SSL_CONNECTION *s); +__owur size_t tls13_final_finish_mac(SSL_CONNECTION *s, const char *str, size_t slen, + unsigned char *p); +__owur int tls13_store_handshake_traffic_hash(SSL_CONNECTION *s); +__owur int tls13_store_server_finished_hash(SSL_CONNECTION *s); +__owur int tls13_change_cipher_state(SSL_CONNECTION *s, int which); +__owur int tls13_update_key(SSL_CONNECTION *s, int send); +__owur int tls13_hkdf_expand(SSL_CONNECTION *s, + const EVP_MD *md, + const unsigned char *secret, + const unsigned char *label, size_t labellen, + const unsigned char *data, size_t datalen, + unsigned char *out, size_t outlen, int fatal); +__owur int tls13_hkdf_expand_ex(OSSL_LIB_CTX *libctx, const char *propq, + const EVP_MD *md, + const unsigned char *secret, + const unsigned char *label, size_t labellen, + const unsigned char *data, size_t datalen, + unsigned char *out, size_t outlen, + int raise_error); +__owur int tls13_derive_key(SSL_CONNECTION *s, const EVP_MD *md, + const unsigned char *secret, unsigned char *key, + size_t keylen); +__owur int tls13_derive_iv(SSL_CONNECTION *s, const EVP_MD *md, + const unsigned char *secret, unsigned char *iv, + size_t ivlen); +__owur int tls13_derive_finishedkey(SSL_CONNECTION *s, const EVP_MD *md, + const unsigned char *secret, + unsigned char *fin, size_t finlen); +int tls13_generate_secret(SSL_CONNECTION *s, const EVP_MD *md, + const unsigned char *prevsecret, + const unsigned char *insecret, + size_t insecretlen, + unsigned char *outsecret); +__owur int tls13_generate_handshake_secret(SSL_CONNECTION *s, + const unsigned char *insecret, + size_t insecretlen); +__owur int tls13_generate_master_secret(SSL_CONNECTION *s, unsigned char *out, + unsigned char *prev, size_t prevlen, + size_t *secret_size); +__owur int tls1_export_keying_material(SSL_CONNECTION *s, + unsigned char *out, size_t olen, + const char *label, size_t llen, + const unsigned char *p, size_t plen, + int use_context); +__owur int tls13_export_keying_material(SSL_CONNECTION *s, + unsigned char *out, size_t olen, + const char *label, size_t llen, + const unsigned char *context, + size_t contextlen, int use_context); +__owur int tls13_export_keying_material_early(SSL_CONNECTION *s, + unsigned char *out, size_t olen, + const char *label, size_t llen, + const unsigned char *context, + size_t contextlen); +__owur int tls1_alert_code(int code); +__owur int tls13_alert_code(int code); +__owur int ssl3_alert_code(int code); + +__owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s); + +SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); + +__owur const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t curve_id); +__owur const char *tls1_group_id2name(SSL_CTX *ctx, uint16_t group_id); +__owur int tls1_group_id2nid(uint16_t group_id, int include_unknown); +__owur uint16_t tls1_nid2group_id(int nid); +__owur int tls1_check_group_id(SSL_CONNECTION *s, uint16_t group_id, + int check_own_curves); +__owur int tls1_get0_implemented_groups(int min_proto_version, + int max_proto_version, + TLS_GROUP_INFO *grps, + size_t num, long all, + STACK_OF(OPENSSL_CSTRING) *out); +__owur uint16_t tls1_shared_group(SSL_CONNECTION *s, int nmatch); +__owur int tls1_set_groups(uint16_t **grpext, size_t *grpextlen, + uint16_t **ksext, size_t *ksextlen, + size_t **tplext, size_t *tplextlen, + int *curves, size_t ncurves); +__owur int tls1_set_groups_list(SSL_CTX *ctx, + uint16_t **grpext, size_t *grpextlen, + uint16_t **ksext, size_t *ksextlen, + size_t **tplext, size_t *tplextlen, + const char *str); +__owur EVP_PKEY *ssl_generate_pkey_group(SSL_CONNECTION *s, uint16_t id); +__owur int tls_valid_group(SSL_CONNECTION *s, uint16_t group_id, int minversion, + int maxversion, int isec, int *okfortls13); +__owur EVP_PKEY *ssl_generate_param_group(SSL_CONNECTION *s, uint16_t id); +void tls1_get_formatlist(SSL_CONNECTION *s, const unsigned char **pformats, + size_t *num_formats); +__owur int tls1_check_ec_tmp_key(SSL_CONNECTION *s, unsigned long id); + +__owur int tls_group_allowed(SSL_CONNECTION *s, uint16_t curve, int op); +void tls1_get_supported_groups(SSL_CONNECTION *s, const uint16_t **pgroups, + size_t *pgroupslen); +void tls1_get_requested_keyshare_groups(SSL_CONNECTION *s, const uint16_t **pgroups, + size_t *pgroupslen); +void tls1_get_group_tuples(SSL_CONNECTION *s, const size_t **ptuples, + size_t *ptupleslen); + +__owur int tls1_set_server_sigalgs(SSL_CONNECTION *s); + +__owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL_CONNECTION *s, + CLIENTHELLO_MSG *hello, + SSL_SESSION **ret); +__owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL_CONNECTION *s, + const unsigned char *etick, + size_t eticklen, + const unsigned char *sess_id, + size_t sesslen, SSL_SESSION **psess); + +__owur int tls_use_ticket(SSL_CONNECTION *s); + +void ssl_set_sig_mask(uint32_t *pmask_a, SSL_CONNECTION *s, int op); + +__owur int tls1_set_sigalgs_list(SSL_CTX *ctx, CERT *c, const char *str, int client); +__owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen, + int client); +__owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, + int client); +int tls1_check_chain(SSL_CONNECTION *s, X509 *x, EVP_PKEY *pk, + STACK_OF(X509) *chain, int idx); +void tls1_set_cert_validity(SSL_CONNECTION *s); + +# ifndef OPENSSL_NO_CT +__owur int ssl_validate_ct(SSL_CONNECTION *s); +# endif + +__owur EVP_PKEY *ssl_get_auto_dh(SSL_CONNECTION *s); + +__owur int ssl_security_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x, int vfy, + int is_ee); +__owur int ssl_security_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk, + X509 *ex, int vfy); + +int tls_choose_sigalg(SSL_CONNECTION *s, int fatalerrs); + +__owur long ssl_get_algorithm2(SSL_CONNECTION *s); +__owur int tls12_copy_sigalgs(SSL_CONNECTION *s, WPACKET *pkt, + const uint16_t *psig, size_t psiglen); +__owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen); +__owur int tls1_save_sigalgs(SSL_CONNECTION *s, PACKET *pkt, int cert); +__owur int tls1_process_sigalgs(SSL_CONNECTION *s); +__owur int tls1_set_peer_legacy_sigalg(SSL_CONNECTION *s, const EVP_PKEY *pkey); +__owur int tls1_lookup_md(SSL_CTX *ctx, const SIGALG_LOOKUP *lu, + const EVP_MD **pmd); +__owur size_t tls12_get_psigalgs(SSL_CONNECTION *s, int sent, + const uint16_t **psigs); +__owur int tls_check_sigalg_curve(const SSL_CONNECTION *s, int curve); +__owur int tls12_check_peer_sigalg(SSL_CONNECTION *s, uint16_t, EVP_PKEY *pkey); +__owur int ssl_set_client_disabled(SSL_CONNECTION *s); +__owur int ssl_cipher_disabled(const SSL_CONNECTION *s, const SSL_CIPHER *c, + int op, int echde); + +__owur int ssl_handshake_hash(SSL_CONNECTION *s, + unsigned char *out, size_t outlen, + size_t *hashlen); +__owur const EVP_MD *ssl_md(SSL_CTX *ctx, int idx); +int ssl_get_md_idx(int md_nid); +__owur const EVP_MD *ssl_handshake_md(SSL_CONNECTION *s); +__owur const EVP_MD *ssl_prf_md(SSL_CONNECTION *s); + +__owur int ossl_adjust_domain_flags(uint64_t domain_flags, + uint64_t *p_domain_flags); + +/* + * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated + * with |ssl|, if logging is enabled. It returns one on success and zero on + * failure. The entry is identified by the first 8 bytes of + * |encrypted_premaster|. + */ +__owur int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *s, + const uint8_t *encrypted_premaster, + size_t encrypted_premaster_len, + const uint8_t *premaster, + size_t premaster_len); + +/* + * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if + * logging is available. It returns one on success and zero on failure. It tags + * the entry with |label|. + */ +__owur int ssl_log_secret(SSL_CONNECTION *s, const char *label, + const uint8_t *secret, size_t secret_len); + +#define MASTER_SECRET_LABEL "CLIENT_RANDOM" +#define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET" +#define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET" +#define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET" +#define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0" +#define CLIENT_APPLICATION_N_LABEL "CLIENT_TRAFFIC_SECRET_N" +#define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0" +#define SERVER_APPLICATION_N_LABEL "SERVER_TRAFFIC_SECRET_N" +#define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET" +#define EXPORTER_SECRET_LABEL "EXPORTER_SECRET" + +__owur int srp_generate_server_master_secret(SSL_CONNECTION *s); +__owur int srp_generate_client_master_secret(SSL_CONNECTION *s); +__owur int srp_verify_server_param(SSL_CONNECTION *s); + +/* statem/statem_srvr.c */ + +__owur int send_certificate_request(SSL_CONNECTION *s); + +/* statem/extensions_cust.c */ + +custom_ext_method *custom_ext_find(const custom_ext_methods *exts, + ENDPOINT role, unsigned int ext_type, + size_t *idx); + +void custom_ext_init(custom_ext_methods *meths); + +int ossl_tls_add_custom_ext_intern(SSL_CTX *ctx, custom_ext_methods *exts, + ENDPOINT role, unsigned int ext_type, + unsigned int context, + SSL_custom_ext_add_cb_ex add_cb, + SSL_custom_ext_free_cb_ex free_cb, + void *add_arg, + SSL_custom_ext_parse_cb_ex parse_cb, + void *parse_arg); +__owur int custom_ext_parse(SSL_CONNECTION *s, unsigned int context, + unsigned int ext_type, + const unsigned char *ext_data, size_t ext_size, + X509 *x, size_t chainidx); +__owur int custom_ext_add(SSL_CONNECTION *s, int context, WPACKET *pkt, X509 *x, + size_t chainidx, int maxversion); + +__owur int custom_exts_copy(custom_ext_methods *dst, + const custom_ext_methods *src); +__owur int custom_exts_copy_conn(custom_ext_methods *dst, + const custom_ext_methods *src); +__owur int custom_exts_copy_flags(custom_ext_methods *dst, + const custom_ext_methods *src); +void custom_exts_free(custom_ext_methods *exts); + +/* ssl_mcnf.c */ +int ssl_ctx_system_config(SSL_CTX *ctx); + +const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx, + int nid, + const char *properties); +int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher); +void ssl_evp_cipher_free(const EVP_CIPHER *cipher); +const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx, + int nid, + const char *properties); +int ssl_evp_md_up_ref(const EVP_MD *md); +void ssl_evp_md_free(const EVP_MD *md); + +void tls_engine_finish(ENGINE *e); +const EVP_CIPHER *tls_get_cipher_from_engine(int nid); +const EVP_MD *tls_get_digest_from_engine(int nid); +int tls_engine_load_ssl_client_cert(SSL_CONNECTION *s, X509 **px509, + EVP_PKEY **ppkey); +int ssl_hmac_old_new(SSL_HMAC *ret); +void ssl_hmac_old_free(SSL_HMAC *ctx); +int ssl_hmac_old_init(SSL_HMAC *ctx, void *key, size_t len, char *md); +int ssl_hmac_old_update(SSL_HMAC *ctx, const unsigned char *data, size_t len); +int ssl_hmac_old_final(SSL_HMAC *ctx, unsigned char *md, size_t *len); +size_t ssl_hmac_old_size(const SSL_HMAC *ctx); + +int ssl_ctx_srp_ctx_free_intern(SSL_CTX *ctx); +int ssl_ctx_srp_ctx_init_intern(SSL_CTX *ctx); +int ssl_srp_ctx_free_intern(SSL_CONNECTION *s); +int ssl_srp_ctx_init_intern(SSL_CONNECTION *s); + +int ssl_srp_calc_a_param_intern(SSL_CONNECTION *s); +int ssl_srp_server_param_with_username_intern(SSL_CONNECTION *s, int *ad); + +void ssl_session_calculate_timeout(SSL_SESSION *ss); + +# else /* OPENSSL_UNIT_TEST */ + +# define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer + +# endif + +/* Some helper routines to support TSAN operations safely */ +static ossl_unused ossl_inline int ssl_tsan_lock(const SSL_CTX *ctx) +{ +#ifdef TSAN_REQUIRES_LOCKING + if (!CRYPTO_THREAD_write_lock(ctx->tsan_lock)) + return 0; +#endif + return 1; +} + +static ossl_unused ossl_inline void ssl_tsan_unlock(const SSL_CTX *ctx) +{ +#ifdef TSAN_REQUIRES_LOCKING + CRYPTO_THREAD_unlock(ctx->tsan_lock); +#endif +} + +static ossl_unused ossl_inline void ssl_tsan_counter(const SSL_CTX *ctx, + TSAN_QUALIFIER int *stat) +{ + if (ssl_tsan_lock(ctx)) { + tsan_counter(stat); + ssl_tsan_unlock(ctx); + } +} + +int ossl_comp_has_alg(int a); +size_t ossl_calculate_comp_expansion(int alg, size_t length); + +void ossl_ssl_set_custom_record_layer(SSL_CONNECTION *s, + const OSSL_RECORD_METHOD *meth, + void *rlarg); + +long ossl_ctrl_internal(SSL *s, int cmd, long larg, void *parg, int no_quic); + +/* + * Options which no longer have any effect, but which can be implemented + * as no-ops for QUIC. + */ +#define OSSL_LEGACY_SSL_OPTIONS \ + (SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG | \ + SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER | \ + SSL_OP_SSLEAY_080_CLIENT_DH_BUG | \ + SSL_OP_TLS_D5_BUG | \ + SSL_OP_TLS_BLOCK_PADDING_BUG | \ + SSL_OP_MSIE_SSLV2_RSA_PADDING | \ + SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG | \ + SSL_OP_MICROSOFT_SESS_ID_BUG | \ + SSL_OP_NETSCAPE_CHALLENGE_BUG | \ + SSL_OP_PKCS1_CHECK_1 | \ + SSL_OP_PKCS1_CHECK_2 | \ + SSL_OP_SINGLE_DH_USE | \ + SSL_OP_SINGLE_ECDH_USE | \ + SSL_OP_EPHEMERAL_RSA ) + +/* This option is undefined in public headers with no-dtls1-method. */ +#ifndef SSL_OP_CISCO_ANYCONNECT +# define SSL_OP_CISCO_ANYCONNECT 0 +#endif +/* + * Options which are no-ops under QUIC or TLSv1.3 and which are therefore + * allowed but ignored under QUIC. + */ +#define OSSL_TLS1_2_OPTIONS \ + (SSL_OP_CRYPTOPRO_TLSEXT_BUG | \ + SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS | \ + SSL_OP_ALLOW_CLIENT_RENEGOTIATION | \ + SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION | \ + SSL_OP_NO_COMPRESSION | \ + SSL_OP_NO_SSLv3 | \ + SSL_OP_NO_TLSv1 | \ + SSL_OP_NO_TLSv1_1 | \ + SSL_OP_NO_TLSv1_2 | \ + SSL_OP_NO_DTLSv1 | \ + SSL_OP_NO_DTLSv1_2 | \ + SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION | \ + SSL_OP_CISCO_ANYCONNECT | \ + SSL_OP_NO_RENEGOTIATION | \ + SSL_OP_NO_EXTENDED_MASTER_SECRET | \ + SSL_OP_NO_ENCRYPT_THEN_MAC | \ + SSL_OP_COOKIE_EXCHANGE | \ + SSL_OP_LEGACY_SERVER_CONNECT | \ + SSL_OP_IGNORE_UNEXPECTED_EOF ) + +/* Total mask of connection-level options permitted or ignored under QUIC. */ +#define OSSL_QUIC_PERMITTED_OPTIONS_CONN \ + (OSSL_LEGACY_SSL_OPTIONS | \ + OSSL_TLS1_2_OPTIONS | \ + SSL_OP_CIPHER_SERVER_PREFERENCE | \ + SSL_OP_DISABLE_TLSEXT_CA_NAMES | \ + SSL_OP_NO_TX_CERTIFICATE_COMPRESSION | \ + SSL_OP_NO_RX_CERTIFICATE_COMPRESSION | \ + SSL_OP_PRIORITIZE_CHACHA | \ + SSL_OP_NO_QUERY_MTU | \ + SSL_OP_NO_TICKET | \ + SSL_OP_NO_ANTI_REPLAY ) + +/* Total mask of stream-level options permitted or ignored under QUIC. */ +#define OSSL_QUIC_PERMITTED_OPTIONS_STREAM \ + (OSSL_LEGACY_SSL_OPTIONS | \ + OSSL_TLS1_2_OPTIONS | \ + SSL_OP_CLEANSE_PLAINTEXT ) + +/* Total mask of options permitted on either connections or streams. */ +#define OSSL_QUIC_PERMITTED_OPTIONS \ + (OSSL_QUIC_PERMITTED_OPTIONS_CONN | \ + OSSL_QUIC_PERMITTED_OPTIONS_STREAM) + +/* Total mask of domain flags supported on a QUIC SSL_CTX. */ +#define OSSL_QUIC_SUPPORTED_DOMAIN_FLAGS \ + (SSL_DOMAIN_FLAG_SINGLE_THREAD | \ + SSL_DOMAIN_FLAG_MULTI_THREAD | \ + SSL_DOMAIN_FLAG_THREAD_ASSISTED | \ + SSL_DOMAIN_FLAG_BLOCKING | \ + SSL_DOMAIN_FLAG_LEGACY_BLOCKING) + +#endif |