diff options
Diffstat (limited to 'ssl/ssl_locl.h')
| -rw-r--r-- | ssl/ssl_locl.h | 316 |
1 files changed, 275 insertions, 41 deletions
diff --git a/ssl/ssl_locl.h b/ssl/ssl_locl.h index a7f3f8dad4aa..6c2c551e5e34 100644 --- a/ssl/ssl_locl.h +++ b/ssl/ssl_locl.h @@ -291,13 +291,13 @@ /* RSA key exchange */ # define SSL_kRSA 0x00000001L /* DH cert, RSA CA cert */ -/* no such ciphersuites supported! */ # define SSL_kDHr 0x00000002L /* DH cert, DSA CA cert */ -/* no such ciphersuite supported! */ # define SSL_kDHd 0x00000004L /* tmp DH key no DH cert */ # define SSL_kEDH 0x00000008L +/* forward-compatible synonym */ +# define SSL_kDHE SSL_kEDH /* Kerberos5 key exchange */ # define SSL_kKRB5 0x00000010L /* ECDH cert, RSA CA cert */ @@ -306,6 +306,8 @@ # define SSL_kECDHe 0x00000040L /* ephemeral ECDH */ # define SSL_kEECDH 0x00000080L +/* forward-compatible synonym */ +# define SSL_kECDHE SSL_kEECDH /* PSK */ # define SSL_kPSK 0x00000100L /* GOST key exchange */ @@ -321,7 +323,6 @@ /* no auth (i.e. use ADH or AECDH) */ # define SSL_aNULL 0x00000004L /* Fixed DH auth (kDHd or kDHr) */ -/* no such ciphersuites supported! */ # define SSL_aDH 0x00000008L /* Fixed ECDH auth (kECDHe or kECDHr) */ # define SSL_aECDH 0x00000010L @@ -465,6 +466,31 @@ (c)->algo_strength) # define SSL_C_EXPORT_PKEYLENGTH(c) SSL_EXPORT_PKEYLENGTH((c)->algo_strength) +/* Check if an SSL structure is using DTLS */ +# define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) +/* 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 <= DTLS1_2_VERSION) || \ + (!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION)) + /* Mostly for SSLv3 */ # define SSL_PKEY_RSA_ENC 0 # define SSL_PKEY_RSA_SIGN 1 @@ -505,7 +531,63 @@ typedef struct cert_pkey_st { EVP_PKEY *privatekey; /* Digest to use when signing */ const EVP_MD *digest; + /* Chain for this certificate */ + STACK_OF(X509) *chain; +# ifndef OPENSSL_NO_TLSEXT + /*- + * 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; +# endif + /* + * Set if 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. + */ + int valid_flags; } CERT_PKEY; +/* 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 struct { + unsigned short ext_type; + /* + * Per-connection flags relating to this extension type: not used if + * part of an SSL_CTX structure. + */ + unsigned short ext_flags; + custom_ext_add_cb add_cb; + custom_ext_free_cb free_cb; + void *add_arg; + custom_ext_parse_cb 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 */ @@ -516,14 +598,17 @@ typedef struct cert_st { */ CERT_PKEY *key; /* - * The following masks are for the key and auth algorithms that are - * supported by the certs below + * 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. */ int valid; unsigned long mask_k; unsigned long mask_a; unsigned long export_mask_k; unsigned long export_mask_a; + /* Client only */ + unsigned long mask_ssl; # ifndef OPENSSL_NO_RSA RSA *rsa_tmp; RSA *(*rsa_tmp_cb) (SSL *ssl, int is_export, int keysize); @@ -536,8 +621,71 @@ typedef struct cert_st { EC_KEY *ecdh_tmp; /* Callback for generating ephemeral ECDH keys */ EC_KEY *(*ecdh_tmp_cb) (SSL *ssl, int is_export, int keysize); + /* Select ECDH parameters automatically */ + int ecdh_tmp_auto; # endif + /* Flags related to certificates */ + unsigned int cert_flags; CERT_PKEY pkeys[SSL_PKEY_NUM]; + /* + * Certificate types (received or sent) in certificate request message. + * On receive this is only set if number of certificate types exceeds + * SSL3_CT_NUMBER. + */ + unsigned char *ctypes; + size_t ctype_num; + /* + * signature algorithms peer reports: e.g. supported signature algorithms + * extension for server or as part of a certificate request for client. + */ + unsigned char *peer_sigalgs; + /* Size of above array */ + size_t peer_sigalgslen; + /* + * suppported 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. + */ + unsigned char *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 cerificate request for TLS 1.2. On a client this + * represents the signature algortithms we are willing to use for client + * authentication. + */ + unsigned char *client_sigalgs; + /* Size of above array */ + size_t client_sigalgslen; + /* + * Signature algorithms shared by client and server: cached because these + * are used most often. + */ + TLS_SIGALGS *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; + /* Raw values of the cipher list from a client */ + unsigned char *ciphers_raw; + size_t ciphers_rawlen; + /* Custom extension methods for server and client */ + custom_ext_methods cli_ext; + custom_ext_methods srv_ext; int references; /* >1 only if SSL_copy_session_id is used */ } CERT; @@ -563,6 +711,18 @@ typedef struct sess_cert_st { # endif int references; /* actually always 1 at the moment */ } SESS_CERT; +/* Structure containing decoded values of signature algorithms extension */ +struct tls_sigalgs_st { + /* NID of hash algorithm */ + int hash_nid; + /* NID of signature algorithm */ + int sign_nid; + /* Combined hash and signature NID */ + int signandhash_nid; + /* Raw values used in extension */ + unsigned char rsign; + unsigned char rhash; +}; /* * #define MAC_DEBUG @@ -596,8 +756,6 @@ typedef struct sess_cert_st { # define FP_ICC (int (*)(const void *,const void *)) # define ssl_put_cipher_by_char(ssl,ciph,ptr) \ ((ssl)->method->put_cipher_by_char((ciph),(ptr))) -# define ssl_get_cipher_by_char(ssl,ptr) \ - ((ssl)->method->get_cipher_by_char(ptr)) /* * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit @@ -622,8 +780,39 @@ typedef struct ssl3_enc_method { const char *, size_t, const unsigned char *, size_t, int use_context); + /* Various flags indicating protocol version requirements */ + unsigned int enc_flags; + /* Handshake header length */ + unsigned int hhlen; + /* Set the handshake header */ + void (*set_handshake_header) (SSL *s, int type, unsigned long len); + /* Write out handshake message */ + int (*do_write) (SSL *s); } SSL3_ENC_METHOD; +# define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen +# define ssl_handshake_start(s) \ + (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen) +# define ssl_set_handshake_header(s, htype, len) \ + s->method->ssl3_enc->set_handshake_header(s, htype, len) +# 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 { @@ -653,13 +842,14 @@ OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[]; SSL_METHOD *ssl_bad_method(int ver); extern SSL3_ENC_METHOD TLSv1_enc_data; +extern SSL3_ENC_METHOD TLSv1_1_enc_data; +extern SSL3_ENC_METHOD TLSv1_2_enc_data; extern SSL3_ENC_METHOD SSLv3_enc_data; extern SSL3_ENC_METHOD DTLSv1_enc_data; - -# define SSL_IS_DTLS(s) (s->method->version == DTLS1_VERSION) +extern SSL3_ENC_METHOD DTLSv1_2_enc_data; # define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \ - s_get_meth) \ + s_get_meth, enc_data) \ const SSL_METHOD *func_name(void) \ { \ static const SSL_METHOD func_name##_data= { \ @@ -688,7 +878,7 @@ const SSL_METHOD *func_name(void) \ ssl3_get_cipher, \ s_get_meth, \ tls1_default_timeout, \ - &TLSv1_enc_data, \ + &enc_data, \ ssl_undefined_void_function, \ ssl3_callback_ctrl, \ ssl3_ctx_callback_ctrl, \ @@ -762,7 +952,7 @@ const SSL_METHOD *func_name(void) \ ssl23_get_cipher, \ s_get_meth, \ ssl23_default_timeout, \ - &ssl3_undef_enc_method, \ + &TLSv1_2_enc_data, \ ssl_undefined_void_function, \ ssl3_callback_ctrl, \ ssl3_ctx_callback_ctrl, \ @@ -807,11 +997,12 @@ const SSL_METHOD *func_name(void) \ return &func_name##_data; \ } -# define IMPLEMENT_dtls1_meth_func(func_name, s_accept, s_connect, s_get_meth) \ +# define IMPLEMENT_dtls1_meth_func(version, func_name, s_accept, s_connect, \ + s_get_meth, enc_data) \ const SSL_METHOD *func_name(void) \ { \ static const SSL_METHOD func_name##_data= { \ - DTLS1_VERSION, \ + version, \ dtls1_new, \ dtls1_clear, \ dtls1_free, \ @@ -836,7 +1027,7 @@ const SSL_METHOD *func_name(void) \ dtls1_get_cipher, \ s_get_meth, \ dtls1_default_timeout, \ - &DTLSv1_enc_data, \ + &enc_data, \ ssl_undefined_void_function, \ ssl3_callback_ctrl, \ ssl3_ctx_callback_ctrl, \ @@ -857,7 +1048,9 @@ void ssl_clear_cipher_ctx(SSL *s); int ssl_clear_bad_session(SSL *s); CERT *ssl_cert_new(void); CERT *ssl_cert_dup(CERT *cert); +void ssl_cert_set_default_md(CERT *cert); int ssl_cert_inst(CERT **o); +void ssl_cert_clear_certs(CERT *c); void ssl_cert_free(CERT *c); SESS_CERT *ssl_sess_cert_new(void); void ssl_sess_cert_free(SESS_CERT *sc); @@ -880,18 +1073,36 @@ int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 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); + const char *rule_str, CERT *c); void ssl_update_cache(SSL *s, int mode); int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size, SSL_COMP **comp); int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md); +int ssl_cipher_get_cert_index(const SSL_CIPHER *c); +const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr); +int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain); +int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain); +int ssl_cert_add0_chain_cert(CERT *c, X509 *x); +int ssl_cert_add1_chain_cert(CERT *c, X509 *x); +int ssl_cert_select_current(CERT *c, X509 *x); +int ssl_cert_set_current(CERT *c, long arg); +X509 *ssl_cert_get0_next_certificate(CERT *c, int first); +void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), + void *arg); + int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); +int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l); +int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags); +int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref); int ssl_undefined_function(SSL *s); int ssl_undefined_void_function(void); int ssl_undefined_const_function(const SSL *s); CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); -X509 *ssl_get_server_send_cert(const SSL *); +# ifndef OPENSSL_NO_TLSEXT +int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, + size_t *serverinfo_length); +# endif EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd); int ssl_cert_type(X509 *x, EVP_PKEY *pkey); void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher); @@ -962,7 +1173,7 @@ void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len); int ssl3_enc(SSL *s, int send_data); int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data); void ssl3_free_digest_list(SSL *s); -unsigned long ssl3_output_cert_chain(SSL *s, X509 *x); +unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk); SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, STACK_OF(SSL_CIPHER) *srvr); int ssl3_setup_buffers(SSL *s); @@ -990,6 +1201,9 @@ void ssl3_record_sequence_update(unsigned char *seq); int ssl3_do_change_cipher_spec(SSL *ssl); long ssl3_default_timeout(void); +void ssl3_set_handshake_header(SSL *s, int htype, unsigned long len); +int ssl3_handshake_write(SSL *s); + int ssl23_num_ciphers(void); const SSL_CIPHER *ssl23_get_cipher(unsigned int u); int ssl23_read(SSL *s, void *buf, int len); @@ -1017,8 +1231,6 @@ int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len); int dtls1_write_bytes(SSL *s, int type, const void *buf, int len); int dtls1_send_change_cipher_spec(SSL *s, int a, int b); -int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen); -unsigned long dtls1_output_cert_chain(SSL *s, X509 *x); int dtls1_read_failed(SSL *s, int code); int dtls1_buffer_message(SSL *s, int ccs); int dtls1_retransmit_message(SSL *s, unsigned short seq, @@ -1065,9 +1277,6 @@ int ssl3_send_next_proto(SSL *s); # endif int dtls1_client_hello(SSL *s); -int dtls1_send_client_certificate(SSL *s); -int dtls1_send_client_key_exchange(SSL *s); -int dtls1_send_client_verify(SSL *s); /* some server-only functions */ int ssl3_get_client_hello(SSL *s); @@ -1076,7 +1285,6 @@ int ssl3_send_hello_request(SSL *s); int ssl3_send_server_key_exchange(SSL *s); int ssl3_send_certificate_request(SSL *s); int ssl3_send_server_done(SSL *s); -int ssl3_check_client_hello(SSL *s); int ssl3_get_client_certificate(SSL *s); int ssl3_get_client_key_exchange(SSL *s); int ssl3_get_cert_verify(SSL *s); @@ -1084,13 +1292,6 @@ int ssl3_get_cert_verify(SSL *s); int ssl3_get_next_proto(SSL *s); # endif -int dtls1_send_hello_request(SSL *s); -int dtls1_send_server_hello(SSL *s); -int dtls1_send_server_certificate(SSL *s); -int dtls1_send_server_key_exchange(SSL *s); -int dtls1_send_certificate_request(SSL *s); -int dtls1_send_server_done(SSL *s); - int ssl23_accept(SSL *s); int ssl23_connect(SSL *s); int ssl23_read_bytes(SSL *s, int n); @@ -1115,7 +1316,6 @@ int dtls1_get_record(SSL *s); int do_dtls1_write(SSL *s, int type, const unsigned char *buf, unsigned int len, int create_empty_fragement); int dtls1_dispatch_alert(SSL *s); -int dtls1_enc(SSL *s, int snd); int ssl_init_wbio_buffer(SSL *s, int push); void ssl_free_wbio_buffer(SSL *s); @@ -1146,22 +1346,33 @@ SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); # ifndef OPENSSL_NO_EC int tls1_ec_curve_id2nid(int curve_id); int tls1_ec_nid2curve_id(int nid); +int tls1_check_curve(SSL *s, const unsigned char *p, size_t len); +int tls1_shared_curve(SSL *s, int nmatch); +int tls1_set_curves(unsigned char **pext, size_t *pextlen, + int *curves, size_t ncurves); +int tls1_set_curves_list(unsigned char **pext, size_t *pextlen, + const char *str); +# ifndef OPENSSL_NO_ECDH +int tls1_check_ec_tmp_key(SSL *s, unsigned long id); +# endif /* OPENSSL_NO_ECDH */ # endif /* OPENSSL_NO_EC */ # ifndef OPENSSL_NO_TLSEXT +int tls1_shared_list(SSL *s, + const unsigned char *l1, size_t l1len, + const unsigned char *l2, size_t l2len, int nmatch); unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf, - unsigned char *limit); + unsigned char *limit, int *al); unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf, - unsigned char *limit); + unsigned char *limit, int *al); int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data, - unsigned char *d, int n, int *al); + unsigned char *d, int n); +int tls1_set_server_sigalgs(SSL *s); +int ssl_check_clienthello_tlsext_late(SSL *s); int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, - unsigned char *d, int n, int *al); + unsigned char *d, int n); int ssl_prepare_clienthello_tlsext(SSL *s); int ssl_prepare_serverhello_tlsext(SSL *s); -int ssl_check_clienthello_tlsext_early(SSL *s); -int ssl_check_clienthello_tlsext_late(SSL *s); -int ssl_check_serverhello_tlsext(SSL *s); # ifndef OPENSSL_NO_HEARTBEATS int tls1_heartbeat(SSL *s); @@ -1183,6 +1394,12 @@ int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk, int tls12_get_sigid(const EVP_PKEY *pk); const EVP_MD *tls12_get_hash(unsigned char hash_alg); +int tls1_set_sigalgs_list(CERT *c, const char *str, int client); +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); + # endif EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md); void ssl_clear_hash_ctx(EVP_MD_CTX **hash); @@ -1195,8 +1412,12 @@ int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len, int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len, int *al); long ssl_get_algorithm2(SSL *s); -int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize); -int tls12_get_req_sig_algs(SSL *s, unsigned char *p); +int tls1_save_sigalgs(SSL *s, const unsigned char *data, int dsize); +int tls1_process_sigalgs(SSL *s); +size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs); +int tls12_check_peer_sigalg(const EVP_MD **pmd, SSL *s, + const unsigned char *sig, EVP_PKEY *pkey); +void ssl_set_client_disabled(SSL *s); int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen); @@ -1234,6 +1455,19 @@ void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx, int srp_verify_server_param(SSL *s, int *al); +/* t1_ext.c */ + +void custom_ext_init(custom_ext_methods *meths); + +int custom_ext_parse(SSL *s, int server, + unsigned int ext_type, + const unsigned char *ext_data, size_t ext_size, int *al); +int custom_ext_add(SSL *s, int server, + unsigned char **pret, unsigned char *limit, int *al); + +int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src); +void custom_exts_free(custom_ext_methods *exts); + # else # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer |