/* * Copyright 1995-2017 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 OpenSSL license (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 HEADER_SSL_LOCL_H # define HEADER_SSL_LOCL_H # include "e_os.h" /* struct timeval for DTLS */ # include # include # include # include # include # include # include # include # include # include # include # include # include # include # include # include "record/record.h" # include "statem/statem.h" # include "packet_locl.h" # include "internal/dane.h" # include "internal/refcount.h" # ifdef OPENSSL_BUILD_SHLIBSSL # undef OPENSSL_EXTERN # define OPENSSL_EXTERN OPENSSL_EXPORT # endif # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \ l|=(((unsigned long)(*((c)++)))<< 8), \ l|=(((unsigned long)(*((c)++)))<<16), \ l|=(((unsigned long)(*((c)++)))<<24)) /* NOTE - c is not incremented as per c2l */ # define c2ln(c,l1,l2,n) { \ c+=n; \ l1=l2=0; \ switch (n) { \ case 8: l2 =((unsigned long)(*(--(c))))<<24; \ case 7: l2|=((unsigned long)(*(--(c))))<<16; \ case 6: l2|=((unsigned long)(*(--(c))))<< 8; \ case 5: l2|=((unsigned long)(*(--(c)))); \ case 4: l1 =((unsigned long)(*(--(c))))<<24; \ case 3: l1|=((unsigned long)(*(--(c))))<<16; \ case 2: l1|=((unsigned long)(*(--(c))))<< 8; \ case 1: l1|=((unsigned long)(*(--(c)))); \ } \ } # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ *((c)++)=(unsigned char)(((l)>>16)&0xff), \ *((c)++)=(unsigned char)(((l)>>24)&0xff)) # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \ l|=((unsigned long)(*((c)++)))<<16, \ l|=((unsigned long)(*((c)++)))<< 8, \ l|=((unsigned long)(*((c)++)))) # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \ l|=((uint64_t)(*((c)++)))<<48, \ l|=((uint64_t)(*((c)++)))<<40, \ l|=((uint64_t)(*((c)++)))<<32, \ l|=((uint64_t)(*((c)++)))<<24, \ l|=((uint64_t)(*((c)++)))<<16, \ l|=((uint64_t)(*((c)++)))<< 8, \ l|=((uint64_t)(*((c)++)))) # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ *((c)++)=(unsigned char)(((l)>>16)&0xff), \ *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ *((c)++)=(unsigned char)(((l) )&0xff)) # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \ *((c)++)=(unsigned char)(((l)>>32)&0xff), \ *((c)++)=(unsigned char)(((l)>>24)&0xff), \ *((c)++)=(unsigned char)(((l)>>16)&0xff), \ *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ *((c)++)=(unsigned char)(((l) )&0xff)) # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \ *((c)++)=(unsigned char)(((l)>>48)&0xff), \ *((c)++)=(unsigned char)(((l)>>40)&0xff), \ *((c)++)=(unsigned char)(((l)>>32)&0xff), \ *((c)++)=(unsigned char)(((l)>>24)&0xff), \ *((c)++)=(unsigned char)(((l)>>16)&0xff), \ *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ *((c)++)=(unsigned char)(((l) )&0xff)) /* NOTE - c is not incremented as per l2c */ # define l2cn(l1,l2,c,n) { \ c+=n; \ switch (n) { \ case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ } \ } # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \ (((unsigned int)((c)[1])) )),(c)+=2) # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \ (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2) # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \ (((unsigned long)((c)[1]))<< 8)| \ (((unsigned long)((c)[2])) )),(c)+=3) # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \ (c)[1]=(unsigned char)(((l)>> 8)&0xff), \ (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3) /* * 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 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 /* synonym */ # define SSL_kEDH SSL_kDHE /* ephemeral ECDH */ # define SSL_kECDHE 0x00000004U /* synonym */ # define SSL_kEECDH SSL_kECDHE /* 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 /* 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_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) /* 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 /* * 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_MAX_DIGEST 12 /* 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 # 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_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) /* Check if we are using TLSv1.3 */ # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \ && (s)->method->version >= TLS1_3_VERSION \ && (s)->method->version != TLS_ANY_VERSION) # define SSL_TREAT_AS_TLS13(s) \ (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_WRITING \ || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY) # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0) /* See if we need explicit IV */ # define SSL_USE_EXPLICIT_IV(s) \ (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) /* * See if we use signature algorithms extension and signature algorithm * before signatures. */ # define SSL_USE_SIGALGS(s) \ (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) \ (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) /* * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method * flags because it may not be set to correct version yet. */ # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \ ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \ (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION))) /* * Determine if a client should send signature algorithms extension: * as with TLS1.2 cipher we can't rely on method flags. */ # define SSL_CLIENT_USE_SIGALGS(s) \ SSL_CLIENT_USE_TLS1_2_CIPHERS(s) # 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) /* Mostly for SSLv3 */ # define SSL_PKEY_RSA 0 # define SSL_PKEY_DSA_SIGN 1 # define SSL_PKEY_ECC 2 # define SSL_PKEY_GOST01 3 # define SSL_PKEY_GOST12_256 4 # define SSL_PKEY_GOST12_512 5 # define SSL_PKEY_ED25519 6 # define SSL_PKEY_NUM 7 /* * Pseudo-constant. GOST cipher suites can use different certs for 1 * SSL_CIPHER. So let's see which one we have in fact. */ # define SSL_PKEY_GOST_EC SSL_PKEY_NUM+1 /* * TODO(TLS1.3) for now use SSL_PKEY_RSA keys for PSS */ #define SSL_PKEY_RSA_PSS_SIGN SSL_PKEY_RSA /*- * 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 */ /*- #define CERT_INVALID 0 #define CERT_PUBLIC_KEY 1 #define CERT_PRIVATE_KEY 2 */ /* 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; unsigned long mask; int (*ssl_new) (SSL *s); int (*ssl_clear) (SSL *s); void (*ssl_free) (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, int type, int *recvd_type, unsigned char *buf, size_t len, int peek, size_t *readbytes); int (*ssl_write_bytes) (SSL *s, int 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); long (*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)); }; /*- * 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 * master secret */ unsigned char master_key[TLS13_MAX_RESUMPTION_MASTER_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; /* This is the cert and type for the other end. */ X509 *peer; int peer_type; /* 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 */ CRYPTO_REF_COUNT references; long timeout; long time; 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 */ STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */ CRYPTO_EX_DATA ex_data; /* application specific data */ /* * These are used to make removal of session-ids more efficient and to * implement a maximum cache size. */ struct ssl_session_st *prev, *next; struct { char *hostname; # ifndef OPENSSL_NO_EC size_t ecpointformats_len; unsigned char *ecpointformats; /* peer's list */ size_t supportedgroups_len; unsigned char *supportedgroups; /* peer's list */ # endif /* OPENSSL_NO_EC */ /* 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; unsigned char *tick_nonce; size_t tick_nonce_len; int tick_identity; /* 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; } ext; # ifndef OPENSSL_NO_SRP char *srp_username; # endif uint32_t flags; CRYPTO_RWLOCK *lock; }; /* 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_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 (units are in ms). 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 (10 * 1000) #define MAX_COMPRESSIONS_SIZE 255 struct ssl_comp_st { int id; const char *name; COMP_METHOD *method; }; 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_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, TLSEXT_IDX_supported_versions, TLSEXT_IDX_psk_kex_modes, TLSEXT_IDX_key_share, TLSEXT_IDX_cookie, TLSEXT_IDX_cryptopro_bug, 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(SSL_SESSION); /* Needed in ssl_cert.c */ DEFINE_LHASH_OF(X509_NAME); # define TLSEXT_KEYNAME_LENGTH 16 struct ssl_ctx_st { 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; 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 which 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 */ long 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 a 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 { int sess_connect; /* SSL new conn - started */ int sess_connect_renegotiate; /* SSL reneg - requested */ int sess_connect_good; /* SSL new conne/reneg - finished */ int sess_accept; /* SSL new accept - started */ int sess_accept_renegotiate; /* SSL reneg - requested */ int sess_accept_good; /* SSL accept/reneg - finished */ int sess_miss; /* session lookup misses */ int sess_timeout; /* reuse attempt on timeouted session */ int sess_cache_full; /* session removed due to full cache */ int sess_hit; /* session reuse actually done */ 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; 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); 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. */ STACK_OF(X509_NAME) *ca_names; /* * Default values to use in SSL structures follow (these are copied by * SSL_new) */ uint32_t options; uint32_t mode; int min_proto_version; int max_proto_version; size_t max_cert_list; struct cert_st /* CERT */ *cert; int read_ahead; /* 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; 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; /* 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]; unsigned char tick_hmac_key[32]; unsigned char tick_aes_key[32]; /* 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); /* 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; # ifndef OPENSSL_NO_EC /* EC extension values inherited by SSL structure */ size_t ecpointformats_len; unsigned char *ecpointformats; size_t supportedgroups_len; unsigned char *supportedgroups; # endif /* OPENSSL_NO_EC */ /* * 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 } 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; /* SRTP profiles we are willing to do from RFC 5764 */ STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* * 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; /* The maximum number of bytes that can be sent as early data */ uint32_t 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; }; struct ssl_st { /* * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, * DTLS1_VERSION) */ int version; /* SSLv3 */ const SSL_METHOD *method; /* * 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; /* 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 * ssl3_get_message() */ size_t init_num; /* amount read/written */ size_t init_off; /* amount read/written */ struct ssl3_state_st *s3; /* SSLv3 variables */ 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) *cipher_list; STACK_OF(SSL_CIPHER) *cipher_list_by_id; /* * 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. The resumption master secret is stored in the * session. */ 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 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]; EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */ unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */ EVP_MD_CTX *read_hash; /* used for mac generation */ COMP_CTX *compress; /* compression */ COMP_CTX *expand; /* uncompress */ EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */ EVP_MD_CTX *write_hash; /* used for mac generation */ /* Count of how many KeyUpdate messages we have received */ unsigned int key_update_count; /* 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 */ int 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; /* 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; SSL_CTX *ctx; /* Verified chain of peer */ STACK_OF(X509) *verified_chain; long verify_result; /* extra application data */ CRYPTO_EX_DATA ex_data; /* for server side, keep the list of CA_dn we can use */ STACK_OF(X509_NAME) *ca_names; CRYPTO_REF_COUNT references; /* protocol behaviour */ uint32_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; # ifndef OPENSSL_NO_EC size_t ecpointformats_len; /* our list */ unsigned char *ecpointformats; size_t supportedgroups_len; /* our list */ unsigned char *supportedgroups; # endif /* OPENSSL_NO_EC */ /* 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; } 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 */ /* What we'll do */ STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What's been chosen */ SRTP_PROTECTION_PROFILE *srtp_profile; /*- * 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; # 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 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 plaintext bytes that can be sent as early data */ uint32_t 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; /* 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; CRYPTO_RWLOCK *lock; RAND_DRBG *drbg; }; /* * 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; /* 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; } SIGALG_LOOKUP; typedef struct cert_pkey_st CERT_PKEY; /* * Structure containing table entry of certificate info corresponding to * CERT_PKEY entries */ typedef struct { int nid; /* NID of pubic key algorithm */ uint32_t amask; /* authmask corresponding to key type */ } SSL_CERT_LOOKUP; typedef struct ssl3_state_st { long flags; size_t read_mac_secret_size; unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; size_t write_mac_secret_size; unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; unsigned char server_random[SSL3_RANDOM_SIZE]; unsigned char client_random[SSL3_RANDOM_SIZE]; /* flags for countermeasure against known-IV weakness */ int need_empty_fragments; int empty_fragment_done; /* 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; # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) EVP_PKEY *pkey; /* holds short lived DH/ECDH key */ # endif /* 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 SIGALG_LOOKUP *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. */ uint16_t *peer_sigalgs; /* Size of above array */ size_t peer_sigalgslen; /* Sigalg peer actualy uses */ const SIGALG_LOOKUP *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[SSL_PKEY_NUM]; /* * 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; /* TODOEKR */ # 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; # ifndef OPENSSL_NO_EC /* * 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; # endif /* !OPENSSL_NO_EC */ /* For clients: peer temporary key */ # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) /* The group_id for the DH/ECDH key */ unsigned int group_id; EVP_PKEY *peer_tmp; # endif } SSL3_STATE; /* 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 /* * Flag used in message reuse to indicate the buffer contains the record * header as well as the the handshake message header. */ # define DTLS1_SKIP_RECORD_HEADER 2 struct dtls1_retransmit_state { EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ EVP_MD_CTX *write_hash; /* used for mac generation */ COMP_CTX *compress; /* compression */ SSL_SESSION *session; unsigned short epoch; }; 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; }; struct dtls1_timeout_st { /* Number of read timeouts so far */ unsigned int read_timeouts; /* Number of write timeouts so far */ unsigned int write_timeouts; /* Number of alerts received so far */ unsigned int num_alerts; }; 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; struct dtls1_timeout_st timeout; /* * Indicates when the last handshake msg sent will timeout */ struct timeval 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; # ifndef OPENSSL_NO_EC /* * 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 # endif /* OPENSSL_NO_EC */ 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; }; /* 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 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; # ifndef OPENSSL_NO_DH EVP_PKEY *dh_tmp; DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize); int dh_tmp_auto; # endif /* Flags related to certificates */ uint32_t cert_flags; CERT_PKEY pkeys[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; /* * Signature algorithms shared by client and server: cached because these * are used most often. */ const SIGALG_LOOKUP **shared_sigalgs; size_t shared_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 */ CRYPTO_RWLOCK *lock; } CERT; # define FP_ICC (int (*)(const void *,const void *)) /* * 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 (*enc) (SSL *, SSL3_RECORD *, size_t, int); int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int); int (*setup_key_block) (SSL *); int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *, size_t, size_t *); int (*change_cipher_state) (SSL *, int); size_t (*final_finish_mac) (SSL *, 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 *, 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 *s, WPACKET *pkt, int type); /* Close construction of the handshake message */ int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype); /* Write out handshake message */ int (*do_write) (SSL *s); } SSL3_ENC_METHOD; # define ssl_set_handshake_header(s, pkt, htype) \ s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype)) # define ssl_close_construct_packet(s, pkt, htype) \ s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype)) # define ssl_do_write(s) s->method->ssl3_enc->do_write(s) /* Values for enc_flags */ /* Uses explicit IV for CBC mode */ # define SSL_ENC_FLAG_EXPLICIT_IV 0x1 /* 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 # ifndef OPENSSL_NO_COMP /* Used for holding the relevant compression methods loaded into SSL_CTX */ typedef struct ssl3_comp_st { int comp_id; /* The identifier byte for this compression * type */ char *name; /* Text name used for the compression type */ COMP_METHOD *method; /* The method :-) */ } SSL3_COMP; # endif 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_sha256 0x0804 #define TLSEXT_SIGALG_rsa_pss_sha384 0x0805 #define TLSEXT_SIGALG_rsa_pss_sha512 0x0806 #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_gostr34112012_256 0xeeee #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded #define TLSEXT_SIGALG_ed25519 0x0807 /* 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 /* An invalid index into the TLSv1.3 PSK identities */ #define TLSEXT_PSK_BAD_IDENTITY -1 #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \ s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS) /* A dummy signature value not valid for TLSv1.2 signature algs */ #define TLSEXT_signature_rsa_pss 0x0101 /* TLSv1.3 downgrade protection sentinel values */ extern const unsigned char tls11downgrade[8]; extern const unsigned char tls12downgrade[8]; extern SSL3_ENC_METHOD ssl3_undef_enc_method; __owur const SSL_METHOD *ssl_bad_method(int ver); __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, \ 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, \ 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, \ 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 *s); int (*p_ssl3_setup_buffers) (SSL *s); }; const char *ssl_protocol_to_string(int version); /* Returns true if certificate and private key for 'idx' are present */ static ossl_inline int ssl_has_cert(const SSL *s, int idx) { if (idx < 0 || idx >= SSL_PKEY_NUM) return 0; return s->cert->pkeys[idx].x509 != NULL && s->cert->pkeys[idx].privatekey != NULL; } # ifndef OPENSSL_UNIT_TEST __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, size_t *written); void ssl_clear_cipher_ctx(SSL *s); int ssl_clear_bad_session(SSL *s); __owur CERT *ssl_cert_new(void); __owur CERT *ssl_cert_dup(CERT *cert); void ssl_cert_clear_certs(CERT *c); void ssl_cert_free(CERT *c); __owur int ssl_get_new_session(SSL *s, int session); __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello, int *al); __owur SSL_SESSION *ssl_session_dup(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(const SSL_METHOD *meth, STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) **sorted, const char *rule_str, CERT *c); __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format, int *al); __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites, STACK_OF(SSL_CIPHER) **skp, STACK_OF(SSL_CIPHER) **scsvs, int sslv2format, int *al); void ssl_update_cache(SSL *s, int mode); __owur int ssl_cipher_get_evp(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(size_t idx); __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr, int all); __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); __owur int ssl_cert_add1_chain_cert(SSL *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 *s, STACK_OF(X509) *sk); __owur int ssl_build_cert_chain(SSL *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_randbytes(SSL *s, unsigned char *buf, size_t num); __owur int ssl_security(const SSL *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); __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx); __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx); int ssl_undefined_function(SSL *s); __owur int ssl_undefined_void_function(void); __owur int ssl_undefined_const_function(const SSL *s); __owur int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, size_t *serverinfo_length); void ssl_set_masks(SSL *s); __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); __owur int ssl_verify_alarm_type(long type); void ssl_sort_cipher_list(void); int ssl_load_ciphers(void); __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, size_t len, DOWNGRADE dgrd); __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen, int free_pms); __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm); __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey, int genmaster); __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh); __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 *s); __owur int ssl3_setup_key_block(SSL *s); __owur int ssl3_change_cipher_state(SSL *s, int which); void ssl3_cleanup_key_block(SSL *s); __owur int ssl3_do_write(SSL *s, int type); int ssl3_send_alert(SSL *s, int level, int desc); __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, size_t len, size_t *secret_size); __owur int ssl3_get_req_cert_type(SSL *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); __owur int ssl3_dispatch_alert(SSL *s); __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen, unsigned char *p); __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len); void ssl3_free_digest_list(SSL *s); __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt, CERT_PKEY *cpk, int *al); __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, STACK_OF(SSL_CIPHER) *srvr); __owur int ssl3_digest_cached_records(SSL *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 *ssl); __owur long ssl3_default_timeout(void); __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype); __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype); __owur int tls_setup_handshake(SSL *s); __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype); __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype); __owur int ssl3_handshake_write(SSL *s); __owur int ssl_allow_compression(SSL *s); __owur int ssl_version_supported(const SSL *s, int version); __owur int ssl_set_client_hello_version(SSL *s); __owur int ssl_check_version_downgrade(SSL *s); __owur int ssl_set_version_bound(int method_version, int version, int *bound); __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello, DOWNGRADE *dgrd); __owur int ssl_choose_client_version(SSL *s, int version, int checkdgrd, int *al); int ssl_get_min_max_version(const SSL *s, int *min_version, int *max_version); __owur long tls1_default_timeout(void); __owur int dtls1_do_write(SSL *s, int type); void dtls1_set_message_header(SSL *s, unsigned char mt, size_t len, size_t frag_off, size_t frag_len); int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len, size_t *written); __owur int dtls1_read_failed(SSL *s, int code); __owur int dtls1_buffer_message(SSL *s, int ccs); __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found); __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs); int dtls1_retransmit_buffered_messages(SSL *s); void dtls1_clear_received_buffer(SSL *s); void dtls1_clear_sent_buffer(SSL *s); void dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr); __owur long dtls1_default_timeout(void); __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft); __owur int dtls1_check_timeout_num(SSL *s); __owur int dtls1_handle_timeout(SSL *s); void dtls1_start_timer(SSL *s); void dtls1_stop_timer(SSL *s); __owur int dtls1_is_timer_expired(SSL *s); void dtls1_double_timeout(SSL *s); __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie, size_t cookie_len); __owur size_t dtls1_min_mtu(SSL *s); void dtls1_hm_fragment_free(hm_fragment *frag); __owur int dtls1_query_mtu(SSL *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 *s); int ssl_free_wbio_buffer(SSL *s); __owur int tls1_change_cipher_state(SSL *s, int which); __owur int tls1_setup_key_block(SSL *s); __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen, unsigned char *p); __owur int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, size_t len, size_t *secret_size); __owur int tls13_setup_key_block(SSL *s); __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen, unsigned char *p); __owur int tls13_change_cipher_state(SSL *s, int which); __owur int tls13_update_key(SSL *s, int send); __owur int tls13_hkdf_expand(SSL *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); __owur int tls13_derive_key(SSL *s, const EVP_MD *md, const unsigned char *secret, unsigned char *key, size_t keylen); __owur int tls13_derive_iv(SSL *s, const EVP_MD *md, const unsigned char *secret, unsigned char *iv, size_t ivlen); __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md, const unsigned char *secret, unsigned char *fin, size_t finlen); int tls13_generate_secret(SSL *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 *s, const unsigned char *insecret, size_t insecretlen); __owur int tls13_generate_master_secret(SSL *s, unsigned char *out, unsigned char *prev, size_t prevlen, size_t *secret_size); __owur int tls1_export_keying_material(SSL *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 *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 tls1_alert_code(int code); __owur int tls13_alert_code(int code); __owur int ssl3_alert_code(int code); # ifndef OPENSSL_NO_EC __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); # endif SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); # ifndef OPENSSL_NO_EC /* Flags values from tls1_ec_curve_id2nid() */ /* Mask for curve type */ # define TLS_CURVE_TYPE 0x3 # define TLS_CURVE_PRIME 0x0 # define TLS_CURVE_CHAR2 0x1 # define TLS_CURVE_CUSTOM 0x2 #define bytestogroup(bytes) ((unsigned int)(bytes[0] << 8 | bytes[1])) __owur int tls1_ec_curve_id2nid(int curve_id, unsigned int *pflags); __owur int tls1_ec_nid2curve_id(int nid); __owur int tls1_check_curve(SSL *s, const unsigned char *p, size_t len); __owur int tls1_shared_group(SSL *s, int nmatch); __owur int tls1_set_groups(unsigned char **pext, size_t *pextlen, int *curves, size_t ncurves); __owur int tls1_set_groups_list(unsigned char **pext, size_t *pextlen, const char *str); void tls1_get_formatlist(SSL *s, const unsigned char **pformats, size_t *num_formats); __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id); __owur EVP_PKEY *ssl_generate_pkey_curve(int id); # endif /* OPENSSL_NO_EC */ __owur int tls_curve_allowed(SSL *s, const unsigned char *curve, int op); __owur int tls1_get_curvelist(SSL *s, int sess, const unsigned char **pcurves, size_t *num_curves); __owur int tls1_set_server_sigalgs(SSL *s); /* Return codes for tls_get_ticket_from_client() and tls_decrypt_ticket() */ typedef enum ticket_en { /* fatal error, malloc failure */ TICKET_FATAL_ERR_MALLOC, /* fatal error, either from parsing or decrypting the ticket */ TICKET_FATAL_ERR_OTHER, /* No ticket present */ TICKET_NONE, /* Empty ticket present */ TICKET_EMPTY, /* the ticket couldn't be decrypted */ TICKET_NO_DECRYPT, /* a ticket was successfully decrypted */ TICKET_SUCCESS, /* same as above but the ticket needs to be renewed */ TICKET_SUCCESS_RENEW } TICKET_RETURN; __owur TICKET_RETURN tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello, SSL_SESSION **ret); __owur TICKET_RETURN tls_decrypt_ticket(SSL *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 *s); void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op); __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client); __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client); int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain, int idx); void tls1_set_cert_validity(SSL *s); # ifndef OPENSSL_NO_CT __owur int ssl_validate_ct(SSL *s); # endif # ifndef OPENSSL_NO_DH __owur DH *ssl_get_auto_dh(SSL *s); # endif __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee); __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, int vfy); int tls_choose_sigalg(SSL *s, int *al); __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md); void ssl_clear_hash_ctx(EVP_MD_CTX **hash); __owur long ssl_get_algorithm2(SSL *s); __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt, const uint16_t *psig, size_t psiglen); __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt); __owur int tls1_process_sigalgs(SSL *s); __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey); __owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd); __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs); __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey); void ssl_set_client_disabled(SSL *s); __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op, int echde); __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, size_t *hashlen); __owur const EVP_MD *ssl_md(int idx); __owur const EVP_MD *ssl_handshake_md(SSL *s); __owur const EVP_MD *ssl_prf_md(SSL *s); /* * 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 *ssl, 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 *ssl, 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 SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0" /* s3_cbc.c */ __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out, size_t *md_out_size, const unsigned char header[13], const unsigned char *data, size_t data_plus_mac_size, size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret, size_t mac_secret_length, char is_sslv3); __owur int srp_generate_server_master_secret(SSL *s); __owur int srp_generate_client_master_secret(SSL *s); __owur int srp_verify_server_param(SSL *s, int *al); /* 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); __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type, const unsigned char *ext_data, size_t ext_size, X509 *x, size_t chainidx, int *al); __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x, size_t chainidx, int maxversion, int *al); __owur int custom_exts_copy(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); void ssl_comp_free_compression_methods_int(void); # else /* OPENSSL_UNIT_TEST */ # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers # endif #endif