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IABSD.fr/src/lib/libssl/ssl_locl.h
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/* $OpenBSD: ssl_locl.h,v 1.267 2020/03/10 17:02:21 jsing Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ /* ==================================================================== * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * openssl-core@openssl.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.openssl.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ /* ==================================================================== * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. * ECC cipher suite support in OpenSSL originally developed by * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */ /* ==================================================================== * Copyright 2005 Nokia. All rights reserved. * * The portions of the attached software ("Contribution") is developed by * Nokia Corporation and is licensed pursuant to the OpenSSL open source * license. * * The Contribution, originally written by Mika Kousa and Pasi Eronen of * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites * support (see RFC 4279) to OpenSSL. * * No patent licenses or other rights except those expressly stated in * the OpenSSL open source license shall be deemed granted or received * expressly, by implication, estoppel, or otherwise. * * No assurances are provided by Nokia that the Contribution does not * infringe the patent or other intellectual property rights of any third * party or that the license provides you with all the necessary rights * to make use of the Contribution. * * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR * OTHERWISE. */ #ifndef HEADER_SSL_LOCL_H #define HEADER_SSL_LOCL_H #include <sys/types.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include <time.h> #include <unistd.h> #include <openssl/opensslconf.h> #include <openssl/bio.h> #include <openssl/buffer.h> #include <openssl/dsa.h> #include <openssl/err.h> #include <openssl/rsa.h> #include <openssl/ssl.h> #include <openssl/stack.h> #include "bytestring.h" #include "ssl_sigalgs.h" #include "tls13_internal.h" __BEGIN_HIDDEN_DECLS #define CTASSERT(x) extern char _ctassert[(x) ? 1 : -1 ] \ __attribute__((__unused__)) #ifndef LIBRESSL_HAS_TLS1_3_CLIENT #define LIBRESSL_HAS_TLS1_3_CLIENT #endif #if defined(LIBRESSL_HAS_TLS1_3_CLIENT) || defined(LIBRESSL_HAS_TLS1_3_SERVER) #define LIBRESSL_HAS_TLS1_3 #endif /* LOCAL STUFF */ #define SSL_DECRYPT 0 #define SSL_ENCRYPT 1 /* * Define the Bitmasks for SSL_CIPHER.algorithms. * This bits are used packed as dense as possible. If new methods/ciphers * etc will be added, the bits a likely to change, so this information * is for internal library use only, even though SSL_CIPHER.algorithms * can be publicly accessed. * Use the according functions for cipher management instead. * * The bit mask handling in the selection and sorting scheme in * ssl_create_cipher_list() has only limited capabilities, reflecting * that the different entities within are mutually exclusive: * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. */ /* Bits for algorithm_mkey (key exchange algorithm) */ #define SSL_kRSA 0x00000001L /* RSA key exchange */ #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */ #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */ #define SSL_kGOST 0x00000200L /* GOST key exchange */ #define SSL_kTLS1_3 0x00000400L /* TLSv1.3 key exchange */ /* Bits for algorithm_auth (server authentication) */ #define SSL_aRSA 0x00000001L /* RSA auth */ #define SSL_aDSS 0x00000002L /* DSS auth */ #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */ #define SSL_aECDSA 0x00000040L /* ECDSA auth*/ #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */ #define SSL_aTLS1_3 0x00000400L /* TLSv1.3 authentication */ /* Bits for algorithm_enc (symmetric encryption) */ #define SSL_DES 0x00000001L #define SSL_3DES 0x00000002L #define SSL_RC4 0x00000004L #define SSL_IDEA 0x00000008L #define SSL_eNULL 0x00000010L #define SSL_AES128 0x00000020L #define SSL_AES256 0x00000040L #define SSL_CAMELLIA128 0x00000080L #define SSL_CAMELLIA256 0x00000100L #define SSL_eGOST2814789CNT 0x00000200L #define SSL_AES128GCM 0x00000400L #define SSL_AES256GCM 0x00000800L #define SSL_CHACHA20POLY1305 0x00001000L #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM) #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) /* Bits for algorithm_mac (symmetric authentication) */ #define SSL_MD5 0x00000001L #define SSL_SHA1 0x00000002L #define SSL_GOST94 0x00000004L #define SSL_GOST89MAC 0x00000008L #define SSL_SHA256 0x00000010L #define SSL_SHA384 0x00000020L /* Not a real MAC, just an indication it is part of cipher */ #define SSL_AEAD 0x00000040L #define SSL_STREEBOG256 0x00000080L /* Bits for algorithm_ssl (protocol version) */ #define SSL_SSLV3 0x00000002L #define SSL_TLSV1 SSL_SSLV3 /* for now */ #define SSL_TLSV1_2 0x00000004L #define SSL_TLSV1_3 0x00000008L /* Bits for algorithm2 (handshake digests and other extra flags) */ #define SSL_HANDSHAKE_MAC_MASK 0xff0 #define SSL_HANDSHAKE_MAC_MD5 0x010 #define SSL_HANDSHAKE_MAC_SHA 0x020 #define SSL_HANDSHAKE_MAC_GOST94 0x040 #define SSL_HANDSHAKE_MAC_SHA256 0x080 #define SSL_HANDSHAKE_MAC_SHA384 0x100 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) #define SSL3_CK_ID 0x03000000 #define SSL3_CK_VALUE_MASK 0x0000ffff #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT) #define TLS1_PRF_DGST_SHIFT 10 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT) #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT) #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT) #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT) #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT) #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT) #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1) /* * Stream MAC for GOST ciphersuites from cryptopro draft * (currently this also goes into algorithm2). */ #define TLS1_STREAM_MAC 0x04 /* * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that * indicates that the variable part of the nonce is included as a prefix of * the record (AES-GCM, for example, does this with an 8-byte variable nonce.) */ #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22) /* * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce * for an SSL_CIPHER with an algorithm_mac of SSL_AEAD. */ #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \ (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2) /* * Cipher strength information. */ #define SSL_STRONG_MASK 0x000001fcL #define SSL_STRONG_NONE 0x00000004L #define SSL_LOW 0x00000020L #define SSL_MEDIUM 0x00000040L #define SSL_HIGH 0x00000080L /* * The keylength (measured in RSA key bits, I guess) for temporary keys. * Cipher argument is so that this can be variable in the future. */ #define SSL_C_PKEYLENGTH(c) 1024 /* Check if an SSL structure is using DTLS. */ #define SSL_IS_DTLS(s) \ (s->method->internal->version == DTLS1_VERSION) /* See if we need explicit IV. */ #define SSL_USE_EXPLICIT_IV(s) \ (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) /* See if we use signature algorithms extension. */ #define SSL_USE_SIGALGS(s) \ (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ #define SSL_USE_TLS1_2_CIPHERS(s) \ (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) /* Allow TLS 1.3 ciphersuites only. */ #define SSL_USE_TLS1_3_CIPHERS(s) \ (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_3_CIPHERS) #define SSL_PKEY_RSA_ENC 0 #define SSL_PKEY_RSA_SIGN 1 #define SSL_PKEY_DH_RSA 2 #define SSL_PKEY_ECC 3 #define SSL_PKEY_GOST01 4 #define SSL_PKEY_NUM 5 #define SSL_MAX_EMPTY_RECORDS 32 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) | * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN) * 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 */ /* 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 typedef struct ssl_method_internal_st { int version; uint16_t min_version; uint16_t max_version; int (*ssl_new)(SSL *s); void (*ssl_clear)(SSL *s); void (*ssl_free)(SSL *s); int (*ssl_accept)(SSL *s); int (*ssl_connect)(SSL *s); int (*ssl_shutdown)(SSL *s); int (*ssl_renegotiate)(SSL *s); int (*ssl_renegotiate_check)(SSL *s); int (*ssl_pending)(const SSL *s); int (*ssl_read_bytes)(SSL *s, int type, unsigned char *buf, int len, int peek); int (*ssl_write_bytes)(SSL *s, int type, const void *buf_, int len); const struct ssl_method_st *(*get_ssl_method)(int version); long (*get_timeout)(void); int (*ssl_version)(void); struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ } SSL_METHOD_INTERNAL; typedef struct ssl_session_internal_st { 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; /* 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; /* The cert is the certificate used to establish this connection */ struct sess_cert_st /* SESS_CERT */ *sess_cert; size_t tlsext_ecpointformatlist_length; uint8_t *tlsext_ecpointformatlist; /* peer's list */ size_t tlsext_supportedgroups_length; uint16_t *tlsext_supportedgroups; /* peer's list */ } SSL_SESSION_INTERNAL; #define SSI(s) (s->session->internal) typedef struct ssl_handshake_st { /* state contains one of the SSL3_ST_* values. */ int state; /* used when SSL_ST_FLUSH_DATA is entered */ int next_state; /* new_cipher is the cipher being negotiated in this handshake. */ const SSL_CIPHER *new_cipher; /* key_block is the record-layer key block for TLS 1.2 and earlier. */ int key_block_len; unsigned char *key_block; /* Extensions seen in this handshake. */ uint32_t extensions_seen; /* sigalgs offered in this handshake in wire form */ size_t sigalgs_len; uint8_t *sigalgs; } SSL_HANDSHAKE; typedef struct ssl_handshake_tls13_st { uint16_t min_version; uint16_t max_version; uint16_t version; int use_legacy; int hrr; /* Version proposed by peer server. */ uint16_t server_version; uint16_t server_group; struct tls13_key_share *key_share; struct tls13_secrets *secrets; uint8_t *cookie; size_t cookie_len; /* Preserved transcript hash. */ uint8_t transcript_hash[EVP_MAX_MD_SIZE]; size_t transcript_hash_len; /* Legacy session ID. */ uint8_t legacy_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; size_t legacy_session_id_len; } SSL_HANDSHAKE_TLS13; typedef struct ssl_ctx_internal_st { uint16_t min_version; uint16_t max_version; unsigned long options; unsigned long mode; /* 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); /* if defined, these override the X509_verify_cert() calls */ int (*app_verify_callback)(X509_STORE_CTX *, void *); void *app_verify_arg; /* 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); void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */ /* 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 (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */ /* Default generate session ID callback. */ GEN_SESSION_CB generate_session_id; /* TLS extensions servername callback */ int (*tlsext_servername_callback)(SSL*, int *, void *); void *tlsext_servername_arg; /* Callback to support customisation of ticket key setting */ int (*tlsext_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 (*tlsext_status_cb)(SSL *ssl, void *arg); void *tlsext_status_arg; struct lhash_st_SSL_SESSION *sessions; /* Most session-ids that will be cached, default is * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */ unsigned long 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. */ int session_cache_mode; 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_EX_DATA ex_data; /* same cipher_list but sorted for lookup */ STACK_OF(SSL_CIPHER) *cipher_list_by_id; struct cert_st /* CERT */ *cert; /* Default values used when no per-SSL value is defined follow */ /* what we put in client cert requests */ STACK_OF(X509_NAME) *client_CA; long max_cert_list; int read_ahead; int quiet_shutdown; /* Maximum amount of data to send in one fragment. * actual record size can be more than this due to * padding and MAC overheads. */ unsigned int max_send_fragment; #ifndef OPENSSL_NO_ENGINE /* Engine to pass requests for client certs to */ ENGINE *client_cert_engine; #endif /* RFC 4507 session ticket keys */ unsigned char tlsext_tick_key_name[16]; unsigned char tlsext_tick_hmac_key[16]; unsigned char tlsext_tick_aes_key[16]; /* SRTP profiles we are willing to do from RFC 5764 */ STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* * ALPN information. */ /* * Server 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; /* Client list of supported protocols in wire format. */ unsigned char *alpn_client_proto_list; unsigned int alpn_client_proto_list_len; size_t tlsext_ecpointformatlist_length; uint8_t *tlsext_ecpointformatlist; /* our list */ size_t tlsext_supportedgroups_length; uint16_t *tlsext_supportedgroups; /* our list */ } SSL_CTX_INTERNAL; typedef struct ssl_internal_st { struct tls13_ctx *tls13; uint16_t min_version; uint16_t max_version; unsigned long options; /* protocol behaviour */ unsigned long mode; /* API behaviour */ /* Client list of supported protocols in wire format. */ unsigned char *alpn_client_proto_list; unsigned int alpn_client_proto_list_len; /* XXX Callbacks */ /* true when we are actually in SSL_accept() or SSL_connect() */ int in_handshake; int (*handshake_func)(SSL *); /* 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; /* Default generate session ID callback. */ GEN_SESSION_CB generate_session_id; int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */ void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */ /* TLS extension debug callback */ void (*tlsext_debug_cb)(SSL *s, int client_server, int type, unsigned char *data, int len, void *arg); void *tlsext_debug_arg; /* TLS Session Ticket extension callback */ tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb; void *tls_session_ticket_ext_cb_arg; /* TLS pre-shared secret session resumption */ tls_session_secret_cb_fn tls_session_secret_cb; void *tls_session_secret_cb_arg; /* XXX non-callback */ int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */ /* 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; /* 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. */ int new_session;/* 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 quiet_shutdown;/* don't send shutdown packets */ int shutdown; /* we have shut things down, 0x01 sent, 0x02 * for received */ BUF_MEM *init_buf; /* buffer used during init */ void *init_msg; /* pointer to handshake message body, set by ssl3_get_message() */ int init_num; /* amount read/written */ int init_off; /* amount read/written */ /* used internally to point at a raw packet */ unsigned char *packet; unsigned int packet_length; int read_ahead; /* Read as many input bytes as possible * (for non-blocking reads) */ int hit; /* reusing a previous session */ /* crypto */ 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 */ int mac_flags; SSL_AEAD_CTX *aead_read_ctx; /* AEAD context. If non-NULL, then enc_read_ctx and read_hash are ignored. */ SSL_AEAD_CTX *aead_write_ctx; /* AEAD context. If non-NULL, then enc_write_ctx and write_hash are ignored. */ EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ EVP_MD_CTX *write_hash; /* used for mac generation */ /* session info */ /* extra application data */ CRYPTO_EX_DATA ex_data; /* client cert? */ /* for server side, keep the list of CA_dn we can use */ STACK_OF(X509_NAME) *client_CA; /* set this flag to 1 and a sleep(1) is put into all SSL_read() * and SSL_write() calls, good for nbio debuging :-) */ int debug; long max_cert_list; int first_packet; int servername_done; /* 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 */ /* Expect OCSP CertificateStatus message */ int tlsext_status_expected; /* OCSP status request only */ STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids; X509_EXTENSIONS *tlsext_ocsp_exts; /* OCSP response received or to be sent */ unsigned char *tlsext_ocsp_resp; int tlsext_ocsp_resplen; /* RFC4507 session ticket expected to be received or sent */ int tlsext_ticket_expected; size_t tlsext_ecpointformatlist_length; uint8_t *tlsext_ecpointformatlist; /* our list */ size_t tlsext_supportedgroups_length; uint16_t *tlsext_supportedgroups; /* our list */ /* TLS Session Ticket extension override */ TLS_SESSION_TICKET_EXT *tlsext_session_ticket; STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What we'll do */ SRTP_PROTECTION_PROFILE *srtp_profile; /* What's been chosen */ int renegotiate;/* 1 if we are renegotiating. * 2 if we are a server and are inside a handshake * (i.e. not just sending a HelloRequest) */ int rstate; /* where we are when reading */ int mac_packet; int empty_record_count; } SSL_INTERNAL; typedef struct ssl3_state_internal_st { unsigned char read_sequence[SSL3_SEQUENCE_SIZE]; int read_mac_secret_size; unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; unsigned char write_sequence[SSL3_SEQUENCE_SIZE]; int write_mac_secret_size; unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; SSL3_BUFFER rbuf; /* read IO goes into here */ SSL3_BUFFER wbuf; /* write IO goes into here */ /* 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]; /* flags for countermeasure against known-IV weakness */ int need_empty_fragments; int empty_fragment_done; SSL3_RECORD rrec; /* each decoded record goes in here */ SSL3_RECORD wrec; /* goes out from here */ /* storage for Alert/Handshake protocol data received but not * yet processed by ssl3_read_bytes: */ unsigned char alert_fragment[2]; unsigned int alert_fragment_len; unsigned char handshake_fragment[4]; unsigned int handshake_fragment_len; /* partial write - check the numbers match */ unsigned int wnum; /* number of bytes sent so far */ int wpend_tot; /* number bytes written */ int wpend_type; int wpend_ret; /* number of bytes submitted */ const unsigned char *wpend_buf; /* Transcript of handshake messages that have been sent and received. */ BUF_MEM *handshake_transcript; /* Rolling hash of handshake messages. */ EVP_MD_CTX *handshake_hash; /* this is set whenerver we see a change_cipher_spec message * come in when we are not looking for one */ int change_cipher_spec; int warn_alert; int fatal_alert; /* 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; SSL_HANDSHAKE hs; SSL_HANDSHAKE_TLS13 hs_tls13; struct { int new_mac_secret_size; /* actually only needs to be 16+20 */ unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ unsigned char finish_md[EVP_MAX_MD_SIZE*2]; int finish_md_len; unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; int peer_finish_md_len; unsigned long message_size; int message_type; DH *dh; EC_KEY *ecdh; /* holds short lived ECDH key */ int ecdh_nid; uint8_t *x25519; int reuse_message; /* used for certificate requests */ int cert_req; int ctype_num; char ctype[SSL3_CT_NUMBER]; STACK_OF(X509_NAME) *ca_names; const EVP_CIPHER *new_sym_enc; const EVP_AEAD *new_aead; const EVP_MD *new_hash; int new_mac_pkey_type; int cert_request; } tmp; /* Connection binding to prevent renegotiation attacks */ unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; unsigned char previous_client_finished_len; unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; unsigned char previous_server_finished_len; int send_connection_binding; /* TODOEKR */ /* Set if we saw a Renegotiation Indication extension from our peer. */ int renegotiate_seen; /* * ALPN information. * * 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; } SSL3_STATE_INTERNAL; #define S3I(s) (s->s3->internal) typedef struct dtls1_state_internal_st { unsigned int send_cookie; unsigned char cookie[DTLS1_COOKIE_LENGTH]; unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH]; unsigned int cookie_len; /* * The current data and handshake epoch. This is initially * undefined, and starts at zero once the initial handshake is * completed */ unsigned short r_epoch; unsigned short w_epoch; /* records being received in the current epoch */ DTLS1_BITMAP bitmap; /* renegotiation starts a new set of sequence numbers */ DTLS1_BITMAP next_bitmap; /* handshake message numbers */ unsigned short handshake_write_seq; unsigned short next_handshake_write_seq; unsigned short handshake_read_seq; /* save last sequence number for retransmissions */ unsigned char last_write_sequence[8]; /* Received handshake records (processed and unprocessed) */ record_pqueue unprocessed_rcds; record_pqueue processed_rcds; /* Buffered handshake messages */ struct _pqueue *buffered_messages; /* Buffered application records. * Only for records between CCS and Finished * to prevent either protocol violation or * unnecessary message loss. */ record_pqueue buffered_app_data; /* Is set when listening for new connections with dtls1_listen() */ unsigned int listen; unsigned int mtu; /* max DTLS packet size */ struct hm_header_st w_msg_hdr; struct hm_header_st r_msg_hdr; struct dtls1_timeout_st timeout; /* storage for Alert/Handshake protocol data received but not * yet processed by ssl3_read_bytes: */ unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH]; unsigned int alert_fragment_len; unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH]; unsigned int handshake_fragment_len; unsigned int retransmitting; unsigned int change_cipher_spec_ok; } DTLS1_STATE_INTERNAL; #define D1I(s) (s->d1->internal) typedef struct cert_pkey_st { X509 *x509; EVP_PKEY *privatekey; STACK_OF(X509) *chain; } CERT_PKEY; typedef struct cert_st { /* Current active set */ CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array * Probably it would make more sense to store * an index, not a pointer. */ /* The following masks are for the key and auth * algorithms that are supported by the certs below */ int valid; unsigned long mask_k; unsigned long mask_a; DH *dh_tmp; DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize); int dh_tmp_auto; CERT_PKEY pkeys[SSL_PKEY_NUM]; int references; /* >1 only if SSL_copy_session_id is used */ } CERT; typedef struct sess_cert_st { STACK_OF(X509) *cert_chain; /* as received from peer */ /* The 'peer_...' members are used only by clients. */ int peer_cert_type; CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */ CERT_PKEY peer_pkeys[SSL_PKEY_NUM]; /* Obviously we don't have the private keys of these, * so maybe we shouldn't even use the CERT_PKEY type here. */ int peer_nid; DH *peer_dh_tmp; EC_KEY *peer_ecdh_tmp; uint8_t *peer_x25519_tmp; int references; /* actually always 1 at the moment */ } SESS_CERT; /*#define SSL_DEBUG */ /*#define RSA_DEBUG */ typedef struct ssl3_enc_method { unsigned int enc_flags; } SSL3_ENC_METHOD; /* * Flag values for enc_flags. */ /* Uses explicit IV. */ #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0) /* Uses signature algorithms extension. */ #define SSL_ENC_FLAG_SIGALGS (1 << 1) /* Uses SHA256 default PRF. */ #define SSL_ENC_FLAG_SHA256_PRF (1 << 2) /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4) /* Allow TLS 1.3 ciphersuites only. */ #define SSL_ENC_FLAG_TLS1_3_CIPHERS (1 << 5) /* * ssl_aead_ctx_st contains information about an AEAD that is being used to * encrypt an SSL connection. */ struct ssl_aead_ctx_st { EVP_AEAD_CTX ctx; /* * fixed_nonce contains any bytes of the nonce that are fixed for all * records. */ unsigned char fixed_nonce[12]; unsigned char fixed_nonce_len; unsigned char variable_nonce_len; unsigned char xor_fixed_nonce; unsigned char tag_len; /* * variable_nonce_in_record is non-zero if the variable nonce * for a record is included as a prefix before the ciphertext. */ char variable_nonce_in_record; }; extern SSL_CIPHER ssl3_ciphers[]; const char *ssl_version_string(int ver); int ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); int ssl_supported_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); int ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver); int ssl_version_set_min(const SSL_METHOD *meth, uint16_t ver, uint16_t max_ver, uint16_t *out_ver); int ssl_version_set_max(const SSL_METHOD *meth, uint16_t ver, uint16_t min_ver, uint16_t *out_ver); uint16_t ssl_max_server_version(SSL *s); int ssl_cipher_is_permitted(const SSL_CIPHER *cipher, uint16_t min_ver, uint16_t max_ver); const SSL_METHOD *tls_legacy_client_method(void); const SSL_METHOD *tls_legacy_server_method(void); const SSL_METHOD *dtls1_get_client_method(int ver); const SSL_METHOD *dtls1_get_server_method(int ver); const SSL_METHOD *tls1_get_client_method(int ver); const SSL_METHOD *tls1_get_server_method(int ver); extern SSL3_ENC_METHOD DTLSv1_enc_data; 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 TLSv1_3_enc_data; void ssl_clear_cipher_state(SSL *s); void ssl_clear_cipher_read_state(SSL *s); void ssl_clear_cipher_write_state(SSL *s); int ssl_clear_bad_session(SSL *s); CERT *ssl_cert_new(void); CERT *ssl_cert_dup(CERT *cert); void ssl_cert_free(CERT *c); 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 *cert); int ssl_cert_add1_chain_cert(CERT *c, X509 *cert); SESS_CERT *ssl_sess_cert_new(void); void ssl_sess_cert_free(SESS_CERT *sc); int ssl_get_new_session(SSL *s, int session); int ssl_get_prev_session(SSL *s, CBS *session_id, CBS *ext_block); int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); SSL_CIPHER *OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num); int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, const SSL_CIPHER * const *bp); int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb); STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, CBS *cbs); 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); 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); int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead); int ssl_get_handshake_evp_md(SSL *s, const EVP_MD **md); int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 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); EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd, const struct ssl_sigalg **sap); DH *ssl_get_auto_dh(SSL *s); int ssl_cert_type(X509 *x, EVP_PKEY *pkey); void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher); STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); int ssl_has_ecc_ciphers(SSL *s); int ssl_verify_alarm_type(long type); int SSL_SESSION_ticket(SSL_SESSION *ss, unsigned char **out, size_t *out_len); const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p); int ssl3_send_server_certificate(SSL *s); int ssl3_send_newsession_ticket(SSL *s); int ssl3_send_cert_status(SSL *s); int ssl3_get_finished(SSL *s, int state_a, int state_b); int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); int ssl3_do_write(SSL *s, int type); int ssl3_send_alert(SSL *s, int level, int desc); int ssl3_get_req_cert_types(SSL *s, CBB *cbb); long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); int ssl3_num_ciphers(void); const SSL_CIPHER *ssl3_get_cipher(unsigned int u); const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id); const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value); uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c); int ssl3_renegotiate(SSL *ssl); int ssl3_renegotiate_check(SSL *ssl); int ssl3_dispatch_alert(SSL *s); int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); int ssl3_output_cert_chain(SSL *s, CBB *cbb, 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); int ssl3_setup_init_buffer(SSL *s); int ssl3_setup_read_buffer(SSL *s); int ssl3_setup_write_buffer(SSL *s); int ssl3_release_read_buffer(SSL *s); int ssl3_release_write_buffer(SSL *s); int ssl3_new(SSL *s); void ssl3_free(SSL *s); int ssl3_accept(SSL *s); int ssl3_connect(SSL *s); int ssl3_read(SSL *s, void *buf, int len); int ssl3_peek(SSL *s, void *buf, int len); int ssl3_write(SSL *s, const void *buf, int len); int ssl3_shutdown(SSL *s); void ssl3_clear(SSL *s); long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void)); int ssl3_pending(const SSL *s); int ssl3_handshake_msg_hdr_len(SSL *s); int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body, uint8_t msg_type); int ssl3_handshake_msg_finish(SSL *s, CBB *handshake); int ssl3_handshake_write(SSL *s); int ssl3_record_write(SSL *s, int type); void tls1_record_sequence_increment(unsigned char *seq); int ssl3_do_change_cipher_spec(SSL *ssl); long tls1_default_timeout(void); int dtls1_do_write(SSL *s, int type); int ssl3_packet_read(SSL *s, int plen); int ssl3_packet_extend(SSL *s, int plen); int ssl_server_legacy_first_packet(SSL *s); int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, unsigned int len); void dtls1_set_message_header(SSL *s, unsigned char mt, unsigned long len, unsigned long frag_off, unsigned long frag_len); void dtls1_set_message_header_int(SSL *s, unsigned char mt, unsigned long len, unsigned short seq_num, unsigned long frag_off, unsigned long frag_len); 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_read_failed(SSL *s, int code); int dtls1_buffer_message(SSL *s, int ccs); int dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off, int *found); int dtls1_get_queue_priority(unsigned short seq, int is_ccs); int dtls1_retransmit_buffered_messages(SSL *s); void dtls1_clear_record_buffer(SSL *s); int dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr); void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr); void dtls1_reset_seq_numbers(SSL *s, int rw); void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq, unsigned short epoch); long dtls1_default_timeout(void); struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft); int dtls1_check_timeout_num(SSL *s); int dtls1_handle_timeout(SSL *s); const SSL_CIPHER *dtls1_get_cipher(unsigned int u); void dtls1_start_timer(SSL *s); void dtls1_stop_timer(SSL *s); int dtls1_is_timer_expired(SSL *s); void dtls1_double_timeout(SSL *s); unsigned int dtls1_min_mtu(void); /* some client-only functions */ int dtls1_get_hello_verify(SSL *s); int ssl3_send_client_hello(SSL *s); int ssl3_get_server_hello(SSL *s); int ssl3_get_certificate_request(SSL *s); int ssl3_get_new_session_ticket(SSL *s); int ssl3_get_cert_status(SSL *s); int ssl3_get_server_done(SSL *s); int ssl3_send_client_verify(SSL *s); int ssl3_send_client_certificate(SSL *s); int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); int ssl3_send_client_key_exchange(SSL *s); int ssl3_get_server_key_exchange(SSL *s); int ssl3_get_server_certificate(SSL *s); int ssl3_check_cert_and_algorithm(SSL *s); int ssl3_check_finished(SSL *s); /* some server-only functions */ int dtls1_send_hello_verify_request(SSL *s); int ssl3_get_client_hello(SSL *s); int ssl3_send_server_hello(SSL *s); 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_get_client_certificate(SSL *s); int ssl3_get_client_key_exchange(SSL *s); int ssl3_get_cert_verify(SSL *s); int ssl_kex_generate_ecdhe_ecp(EC_KEY *ecdh, int nid); int ssl_kex_public_ecdhe_ecp(EC_KEY *ecdh, CBB *cbb); int ssl_kex_peer_public_ecdhe_ecp(EC_KEY *ecdh, int nid, CBS *cbs); int ssl_kex_derive_ecdhe_ecp(EC_KEY *ecdh, EC_KEY *ecdh_peer, uint8_t **shared_key, size_t *shared_key_len); int tls1_new(SSL *s); void tls1_free(SSL *s); void tls1_clear(SSL *s); int dtls1_new(SSL *s); void dtls1_free(SSL *s); void dtls1_clear(SSL *s); long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); int dtls1_get_record(SSL *s); 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); int tls1_transcript_hash_init(SSL *s); int tls1_transcript_hash_update(SSL *s, const unsigned char *buf, size_t len); int tls1_transcript_hash_value(SSL *s, const unsigned char *out, size_t len, size_t *outlen); void tls1_transcript_hash_free(SSL *s); int tls1_transcript_init(SSL *s); void tls1_transcript_free(SSL *s); void tls1_transcript_reset(SSL *s); int tls1_transcript_append(SSL *s, const unsigned char *buf, size_t len); int tls1_transcript_data(SSL *s, const unsigned char **data, size_t *len); void tls1_transcript_freeze(SSL *s); void tls1_transcript_unfreeze(SSL *s); int tls1_transcript_record(SSL *s, const unsigned char *buf, size_t len); void tls1_cleanup_key_block(SSL *s); int tls1_change_cipher_state(SSL *s, int which); int tls1_setup_key_block(SSL *s); int tls1_enc(SSL *s, int snd); int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p); int tls1_mac(SSL *ssl, unsigned char *md, int snd); int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, int len); 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); int tls1_alert_code(int code); int ssl_ok(SSL *s); int ssl_using_ecc_cipher(SSL *s); int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); void tls1_get_formatlist(SSL *s, int client_formats, const uint8_t **pformats, size_t *pformatslen); void tls1_get_group_list(SSL *s, int client_groups, const uint16_t **pgroups, size_t *pgroupslen); int tls1_set_groups(uint16_t **out_group_ids, size_t *out_group_ids_len, const int *groups, size_t ngroups); int tls1_set_group_list(uint16_t **out_group_ids, size_t *out_group_ids_len, const char *groups); int tls1_ec_curve_id2nid(const uint16_t curve_id); uint16_t tls1_ec_nid2curve_id(const int nid); int tls1_check_curve(SSL *s, const uint16_t group_id); int tls1_get_shared_curve(SSL *s); int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, size_t n, int *al); int ssl_check_clienthello_tlsext_early(SSL *s); int ssl_check_clienthello_tlsext_late(SSL *s); int ssl_check_serverhello_tlsext(SSL *s); int tls1_process_ticket(SSL *s, CBS *session_id, CBS *ext_block, SSL_SESSION **ret); long ssl_get_algorithm2(SSL *s); int tls1_check_ec_server_key(SSL *s); /* s3_cbc.c */ void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD *rec, unsigned md_size, unsigned orig_len); int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD *rec, unsigned block_size, unsigned mac_size); char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 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, unsigned mac_secret_length); int SSL_state_func_code(int _state); #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__) #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__) void SSL_error_internal(const SSL *s, int r, char *f, int l); #ifndef OPENSSL_NO_SRTP int srtp_find_profile_by_name(char *profile_name, SRTP_PROTECTION_PROFILE **pptr, unsigned len); int srtp_find_profile_by_num(unsigned profile_num, SRTP_PROTECTION_PROFILE **pptr); #endif /* OPENSSL_NO_SRTP */ __END_HIDDEN_DECLS #endif