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yuzu/externals/libressl/ssl/ssl_locl.h

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/* $OpenBSD: ssl_locl.h,v 1.295 2020/09/24 18:12:00 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
#ifndef LIBRESSL_HAS_TLS1_3_SERVER
#define LIBRESSL_HAS_TLS1_3_SERVER
#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 0
#define SSL_PKEY_ECC 1
#define SSL_PKEY_GOST01 2
#define SSL_PKEY_NUM 3
#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);
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 cert_pkey_st {
X509 *x509;
EVP_PKEY *privatekey;
STACK_OF(X509) *chain;
} CERT_PKEY;
typedef struct ssl_handshake_tls13_st {
uint16_t min_version;
uint16_t max_version;
uint16_t version;
int use_legacy;
int hrr;
/* Certificate and sigalg selected for use (static pointers). */
const CERT_PKEY *cpk;
const struct ssl_sigalg *sigalg;
/* 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;
/* ClientHello hash, used to validate following HelloRetryRequest */
EVP_MD_CTX *clienthello_md_ctx;
unsigned char *clienthello_hash;
unsigned int clienthello_hash_len;
} SSL_HANDSHAKE_TLS13;
struct tls12_record_layer;
struct tls12_record_layer *tls12_record_layer_new(void);
void tls12_record_layer_free(struct tls12_record_layer *rl);
void tls12_record_layer_set_version(struct tls12_record_layer *rl,
uint16_t version);
void tls12_record_layer_set_read_epoch(struct tls12_record_layer *rl,
uint16_t epoch);
void tls12_record_layer_set_write_epoch(struct tls12_record_layer *rl,
uint16_t epoch);
void tls12_record_layer_clear_read_state(struct tls12_record_layer *rl);
void tls12_record_layer_clear_write_state(struct tls12_record_layer *rl);
void tls12_record_layer_set_read_seq_num(struct tls12_record_layer *rl,
uint8_t *seq_num);
void tls12_record_layer_set_write_seq_num(struct tls12_record_layer *rl,
uint8_t *seq_num);
int tls12_record_layer_set_read_aead(struct tls12_record_layer *rl,
SSL_AEAD_CTX *aead_ctx);
int tls12_record_layer_set_write_aead(struct tls12_record_layer *rl,
SSL_AEAD_CTX *aead_ctx);
int tls12_record_layer_set_read_cipher_hash(struct tls12_record_layer *rl,
EVP_CIPHER_CTX *cipher_ctx, EVP_MD_CTX *hash_ctx, int stream_mac);
int tls12_record_layer_set_write_cipher_hash(struct tls12_record_layer *rl,
EVP_CIPHER_CTX *cipher_ctx, EVP_MD_CTX *hash_ctx, int stream_mac);
int tls12_record_layer_seal_record(struct tls12_record_layer *rl,
uint8_t content_type, const uint8_t *content, size_t content_len,
CBB *out);
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;
STACK_OF(SSL_CIPHER) *cipher_list_tls13;
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 */
STACK_OF(SSL_CIPHER) *cipher_list_tls13;
/* 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 */
struct tls12_record_layer *rl;
/* 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;
/* 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;
size_t tlsext_ocsp_resp_len;
/* 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_record_internal_st {
int type; /* type of record */
unsigned int length; /* How many bytes available */
unsigned int padding_length; /* Number of padding bytes. */
unsigned int off; /* read/write offset into 'buf' */
unsigned char *data; /* pointer to the record data */
unsigned char *input; /* where the decode bytes are */
unsigned long epoch; /* epoch number, needed by DTLS1 */
unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
} SSL3_RECORD_INTERNAL;
typedef struct ssl3_buffer_internal_st {
unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
* see ssl3_setup_buffers() */
size_t len; /* buffer size */
int offset; /* where to 'copy from' */
int left; /* how many bytes left */
} SSL3_BUFFER_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_INTERNAL rbuf; /* read IO goes into here */
SSL3_BUFFER_INTERNAL 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_INTERNAL rrec; /* each decoded record goes in 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_record_data_internal_st {
unsigned char *packet;
unsigned int packet_length;
SSL3_BUFFER_INTERNAL rbuf;
SSL3_RECORD_INTERNAL rrec;
} DTLS1_RECORD_DATA_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[SSL3_SEQUENCE_SIZE];
/* 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_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);
int ssl_downgrade_max_version(SSL *s, uint16_t *max_ver);
int ssl_cipher_in_list(STACK_OF(SSL_CIPHER) *ciphers, const SSL_CIPHER *cipher);
int ssl_cipher_allowed_in_version_range(const SSL_CIPHER *cipher,
uint16_t min_ver, uint16_t max_ver);
const SSL_METHOD *tls_legacy_method(void);
const SSL_METHOD *tls_legacy_client_method(void);
const SSL_METHOD *tls_legacy_server_method(void);
const SSL_METHOD *ssl_get_client_method(uint16_t version);
const SSL_METHOD *ssl_get_server_method(uint16_t version);
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 *alert);
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_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) *tls13,
const char *rule_str);
int ssl_parse_ciphersuites(STACK_OF(SSL_CIPHER) **out_ciphers, const char *str);
int ssl_merge_cipherlists(STACK_OF(SSL_CIPHER) *cipherlist,
STACK_OF(SSL_CIPHER) *cipherlist_tls13,
STACK_OF(SSL_CIPHER) **out_cipherlist);
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);
void ssl3_release_init_buffer(SSL *s);
int ssl3_setup_read_buffer(SSL *s);
int ssl3_setup_write_buffer(SSL *s);
void ssl3_release_buffer(SSL3_BUFFER_INTERNAL *b);
void ssl3_release_read_buffer(SSL *s);
void 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);
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);
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_dummy_ecdhe_x25519(EVP_PKEY *pkey);
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 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);
#define TLS1_TICKET_FATAL_ERROR -1
#define TLS1_TICKET_NONE 0
#define TLS1_TICKET_EMPTY 1
#define TLS1_TICKET_NOT_DECRYPTED 2
#define TLS1_TICKET_DECRYPTED 3
int tls1_process_ticket(SSL *s, CBS *ext_block, int *alert, 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_INTERNAL *rec,
unsigned int md_size, unsigned int orig_len);
int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD_INTERNAL *rec,
unsigned int block_size, unsigned int 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 int 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 int len);
int srtp_find_profile_by_num(unsigned int profile_num,
SRTP_PROTECTION_PROFILE **pptr);
#endif /* OPENSSL_NO_SRTP */
__END_HIDDEN_DECLS
#endif
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