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freebsd-nq/crypto/openssl/ssl/ssl_locl.h
Kris Kennaway f579bf8ec7 Initial import of OpenSSL 0.9.5a
2000-04-13 06:33:22 +00:00

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/* ssl/ssl_locl.h */
/* 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.]
*/
#ifndef HEADER_SSL_LOCL_H
#define HEADER_SSL_LOCL_H
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <errno.h>
#include "openssl/e_os.h"
#include <openssl/buffer.h>
#include <openssl/comp.h>
#include <openssl/bio.h>
#include <openssl/crypto.h>
#include <openssl/evp.h>
#include <openssl/stack.h>
#include <openssl/x509.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
#define PKCS1_CHECK
#define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
l|=(((unsigned long)(*((c)++)))<< 8), \
l|=(((unsigned long)(*((c)++)))<<16), \
l|=(((unsigned long)(*((c)++)))<<24))
/* NOTE - c is not incremented as per c2l */
#define c2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c))))<<24; \
case 7: l2|=((unsigned long)(*(--(c))))<<16; \
case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
case 5: l2|=((unsigned long)(*(--(c)))); \
case 4: l1 =((unsigned long)(*(--(c))))<<24; \
case 3: l1|=((unsigned long)(*(--(c))))<<16; \
case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
case 1: l1|=((unsigned long)(*(--(c)))); \
} \
}
#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff))
#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
l|=((unsigned long)(*((c)++)))<<16, \
l|=((unsigned long)(*((c)++)))<< 8, \
l|=((unsigned long)(*((c)++))))
#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
/* NOTE - c is not incremented as per l2c */
#define l2cn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
} \
}
#define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
(((unsigned int)(c[1])) )),c+=2)
#define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
c[1]=(unsigned char)(((s) )&0xff)),c+=2)
#define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
(((unsigned long)(c[1]))<< 8)| \
(((unsigned long)(c[2])) )),c+=3)
#define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
c[1]=(unsigned char)(((l)>> 8)&0xff), \
c[2]=(unsigned char)(((l) )&0xff)),c+=3)
/* LOCAL STUFF */
#define SSL_DECRYPT 0
#define SSL_ENCRYPT 1
#define TWO_BYTE_BIT 0x80
#define SEC_ESC_BIT 0x40
#define TWO_BYTE_MASK 0x7fff
#define THREE_BYTE_MASK 0x3fff
#define INC32(a) ((a)=((a)+1)&0xffffffffL)
#define DEC32(a) ((a)=((a)-1)&0xffffffffL)
#define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
/*
* 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.
*/
#define SSL_MKEY_MASK 0x0000001FL
#define SSL_kRSA 0x00000001L /* RSA key exchange */
#define SSL_kDHr 0x00000002L /* DH cert RSA CA cert */
#define SSL_kDHd 0x00000004L /* DH cert DSA CA cert */
#define SSL_kFZA 0x00000008L
#define SSL_kEDH 0x00000010L /* tmp DH key no DH cert */
#define SSL_EDH (SSL_kEDH|(SSL_AUTH_MASK^SSL_aNULL))
#define SSL_AUTH_MASK 0x000003e0L
#define SSL_aRSA 0x00000020L /* Authenticate with RSA */
#define SSL_aDSS 0x00000040L /* Authenticate with DSS */
#define SSL_DSS SSL_aDSS
#define SSL_aFZA 0x00000080L
#define SSL_aNULL 0x00000100L /* no Authenticate, ADH */
#define SSL_aDH 0x00000200L /* no Authenticate, ADH */
#define SSL_NULL (SSL_eNULL)
#define SSL_ADH (SSL_kEDH|SSL_aNULL)
#define SSL_RSA (SSL_kRSA|SSL_aRSA)
#define SSL_DH (SSL_kDHr|SSL_kDHd|SSL_kEDH)
#define SSL_FZA (SSL_aFZA|SSL_kFZA|SSL_eFZA)
#define SSL_ENC_MASK 0x0001Fc00L
#define SSL_DES 0x00000400L
#define SSL_3DES 0x00000800L
#define SSL_RC4 0x00001000L
#define SSL_RC2 0x00002000L
#define SSL_IDEA 0x00004000L
#define SSL_eFZA 0x00008000L
#define SSL_eNULL 0x00010000L
#define SSL_MAC_MASK 0x00060000L
#define SSL_MD5 0x00020000L
#define SSL_SHA1 0x00040000L
#define SSL_SHA (SSL_SHA1)
#define SSL_SSL_MASK 0x00180000L
#define SSL_SSLV2 0x00080000L
#define SSL_SSLV3 0x00100000L
#define SSL_TLSV1 SSL_SSLV3 /* for now */
/* we have used 001fffff - 11 bits left to go */
/*
* Export and cipher strength information. For each cipher we have to decide
* whether it is exportable or not. This information is likely to change
* over time, since the export control rules are no static technical issue.
*
* Independent of the export flag the cipher strength is sorted into classes.
* SSL_EXP40 was denoting the 40bit US export limit of past times, which now
* is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
* again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
* since SSL_EXP64 could be similar to SSL_LOW.
* For this reason SSL_MICRO and SSL_MINI macros are included to widen the
* namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
* and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
* be possible.
*/
#define SSL_EXP_MASK 0x00000003L
#define SSL_NOT_EXP 0x00000001L
#define SSL_EXPORT 0x00000002L
#define SSL_STRONG_MASK 0x0000007cL
#define SSL_EXP40 0x00000004L
#define SSL_MICRO (SSL_EXP40)
#define SSL_EXP56 0x00000008L
#define SSL_MINI (SSL_EXP56)
#define SSL_LOW 0x00000010L
#define SSL_MEDIUM 0x00000020L
#define SSL_HIGH 0x00000040L
/* we have used 0000007f - 25 bits left to go */
/*
* Macros to check the export status and cipher strength for export ciphers.
* Even though the macros for EXPORT and EXPORT40/56 have similar names,
* their meaning is different:
* *_EXPORT macros check the 'exportable' status.
* *_EXPORT40/56 macros are used to check whether a certain cipher strength
* is given.
* Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
* algorithm structure element to be passed (algorithms, algo_strength) and no
* typechecking can be done as they are all of type unsigned long, their
* direct usage is discouraged.
* Use the SSL_C_* macros instead.
*/
#define SSL_IS_EXPORT(a) ((a)&SSL_EXPORT)
#define SSL_IS_EXPORT56(a) ((a)&SSL_EXP56)
#define SSL_IS_EXPORT40(a) ((a)&SSL_EXP40)
#define SSL_C_IS_EXPORT(c) SSL_IS_EXPORT((c)->algo_strength)
#define SSL_C_IS_EXPORT56(c) SSL_IS_EXPORT56((c)->algo_strength)
#define SSL_C_IS_EXPORT40(c) SSL_IS_EXPORT40((c)->algo_strength)
#define SSL_EXPORT_KEYLENGTH(a,s) (SSL_IS_EXPORT40(s) ? 5 : \
((a)&SSL_ENC_MASK) == SSL_DES ? 8 : 7)
#define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
#define SSL_C_EXPORT_KEYLENGTH(c) SSL_EXPORT_KEYLENGTH((c)->algorithms, \
(c)->algo_strength)
#define SSL_C_EXPORT_PKEYLENGTH(c) SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
#define SSL_ALL 0xffffffffL
#define SSL_ALL_CIPHERS (SSL_MKEY_MASK|SSL_AUTH_MASK|SSL_ENC_MASK|\
SSL_MAC_MASK)
#define SSL_ALL_STRENGTHS (SSL_EXP_MASK|SSL_STRONG_MASK)
/* Mostly for SSLv3 */
#define SSL_PKEY_RSA_ENC 0
#define SSL_PKEY_RSA_SIGN 1
#define SSL_PKEY_DSA_SIGN 2
#define SSL_PKEY_DH_RSA 3
#define SSL_PKEY_DH_DSA 4
#define SSL_PKEY_NUM 5
/* 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_kEDH <- 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
*/
typedef struct cert_pkey_st
{
X509 *x509;
EVP_PKEY *privatekey;
} 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;
unsigned long export_mask;
#ifndef NO_RSA
RSA *rsa_tmp;
RSA *(*rsa_tmp_cb)(SSL *ssl,int is_export,int keysize);
#endif
#ifndef NO_DH
DH *dh_tmp;
DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
#endif
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 (not for SSL2) */
/* 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. */
#ifndef NO_RSA
RSA *peer_rsa_tmp; /* not used for SSL 2 */
#endif
#ifndef NO_DH
DH *peer_dh_tmp; /* not used for SSL 2 */
#endif
int references; /* actually always 1 at the moment */
} SESS_CERT;
/*#define MAC_DEBUG */
/*#define ERR_DEBUG */
/*#define ABORT_DEBUG */
/*#define PKT_DEBUG 1 */
/*#define DES_DEBUG */
/*#define DES_OFB_DEBUG */
/*#define SSL_DEBUG */
/*#define RSA_DEBUG */
/*#define IDEA_DEBUG */
#define FP_ICC (int (*)(const void *,const void *))
#define ssl_put_cipher_by_char(ssl,ciph,ptr) \
((ssl)->method->put_cipher_by_char((ciph),(ptr)))
#define ssl_get_cipher_by_char(ssl,ptr) \
((ssl)->method->get_cipher_by_char(ptr))
/* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
* It is a bit of a mess of functions, but hell, think of it as
* an opaque structure :-) */
typedef struct ssl3_enc_method
{
int (*enc)(SSL *, int);
int (*mac)(SSL *, unsigned char *, int);
int (*setup_key_block)(SSL *);
int (*generate_master_secret)(SSL *, unsigned char *, unsigned char *, int);
int (*change_cipher_state)(SSL *, int);
int (*final_finish_mac)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char *, int, unsigned char *);
int finish_mac_length;
int (*cert_verify_mac)(SSL *, EVP_MD_CTX *, unsigned char *);
const char *client_finished_label;
int client_finished_label_len;
const char *server_finished_label;
int server_finished_label_len;
int (*alert_value)(int);
} SSL3_ENC_METHOD;
/* Used for holding the relevant compression methods loaded into SSL_CTX */
typedef struct ssl3_comp_st
{
int comp_id; /* The identifier byte for this compression type */
char *name; /* Text name used for the compression type */
COMP_METHOD *method; /* The method :-) */
} SSL3_COMP;
OPENSSL_EXTERN SSL3_ENC_METHOD ssl3_undef_enc_method;
OPENSSL_EXTERN SSL_CIPHER ssl2_ciphers[];
OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
#ifdef VMS
#undef SSL_COMP_get_compression_methods
#define SSL_COMP_get_compression_methods SSL_COMP_get_compress_methods
#endif
SSL_METHOD *ssl_bad_method(int ver);
SSL_METHOD *sslv2_base_method(void);
SSL_METHOD *sslv23_base_method(void);
SSL_METHOD *sslv3_base_method(void);
void ssl_clear_cipher_ctx(SSL *s);
int ssl_clear_bad_session(SSL *s);
CERT *ssl_cert_new(void);
CERT *ssl_cert_dup(CERT *cert);
int ssl_cert_inst(CERT **o);
void ssl_cert_free(CERT *c);
SESS_CERT *ssl_sess_cert_new(void);
void ssl_sess_cert_free(SESS_CERT *sc);
int ssl_set_peer_cert_type(SESS_CERT *c, int type);
int ssl_get_new_session(SSL *s, int session);
int ssl_get_prev_session(SSL *s, unsigned char *session,int len);
int ssl_cipher_id_cmp(SSL_CIPHER *a,SSL_CIPHER *b);
int ssl_cipher_ptr_id_cmp(SSL_CIPHER **ap,SSL_CIPHER **bp);
STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
STACK_OF(SSL_CIPHER) **skp);
int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p);
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(SSL_SESSION *s,const EVP_CIPHER **enc,const EVP_MD **md,
SSL_COMP **comp);
int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
int ssl_undefined_function(SSL *s);
X509 *ssl_get_server_send_cert(SSL *);
EVP_PKEY *ssl_get_sign_pkey(SSL *,SSL_CIPHER *);
int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher);
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
int ssl_verify_alarm_type(long type);
int ssl2_enc_init(SSL *s, int client);
void ssl2_generate_key_material(SSL *s);
void ssl2_enc(SSL *s,int send_data);
void ssl2_mac(SSL *s,unsigned char *mac,int send_data);
SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
int ssl2_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
int ssl2_part_read(SSL *s, unsigned long f, int i);
int ssl2_do_write(SSL *s);
int ssl2_set_certificate(SSL *s, int type, int len, unsigned char *data);
void ssl2_return_error(SSL *s,int reason);
void ssl2_write_error(SSL *s);
int ssl2_num_ciphers(void);
SSL_CIPHER *ssl2_get_cipher(unsigned int u);
int ssl2_new(SSL *s);
void ssl2_free(SSL *s);
int ssl2_accept(SSL *s);
int ssl2_connect(SSL *s);
int ssl2_read(SSL *s, void *buf, int len);
int ssl2_peek(SSL *s, char *buf, int len);
int ssl2_write(SSL *s, const void *buf, int len);
int ssl2_shutdown(SSL *s);
void ssl2_clear(SSL *s);
long ssl2_ctrl(SSL *s,int cmd, long larg, char *parg);
long ssl2_ctx_ctrl(SSL_CTX *s,int cmd, long larg, char *parg);
long ssl2_callback_ctrl(SSL *s,int cmd, void (*fp)());
long ssl2_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)());
int ssl2_pending(SSL *s);
SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
int ssl3_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
void ssl3_init_finished_mac(SSL *s);
int ssl3_send_server_certificate(SSL *s);
int ssl3_get_finished(SSL *s,int state_a,int state_b);
int ssl3_setup_key_block(SSL *s);
int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
int ssl3_change_cipher_state(SSL *s,int which);
void ssl3_cleanup_key_block(SSL *s);
int ssl3_do_write(SSL *s,int type);
void ssl3_send_alert(SSL *s,int level, int desc);
int ssl3_generate_master_secret(SSL *s, unsigned char *out,
unsigned char *p, int len);
int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
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);
SSL_CIPHER *ssl3_get_cipher(unsigned int u);
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 ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
const char *sender, int slen,unsigned char *p);
int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *in, unsigned char *p);
void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
int ssl3_enc(SSL *s, int send_data);
int ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *have,
STACK_OF(SSL_CIPHER) *pref);
int ssl3_setup_buffers(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,char *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, char *parg);
long ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, char *parg);
long ssl3_callback_ctrl(SSL *s,int cmd, void (*fp)());
long ssl3_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)());
int ssl3_pending(SSL *s);
int ssl23_accept(SSL *s);
int ssl23_connect(SSL *s);
int ssl23_read_bytes(SSL *s, int n);
int ssl23_write_bytes(SSL *s);
int tls1_new(SSL *s);
void tls1_free(SSL *s);
void tls1_clear(SSL *s);
long tls1_ctrl(SSL *s,int cmd, long larg, char *parg);
long tls1_callback_ctrl(SSL *s,int cmd, void (*fp)());
SSL_METHOD *tlsv1_base_method(void );
int ssl_init_wbio_buffer(SSL *s, int push);
void ssl_free_wbio_buffer(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, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
const char *str, int slen, unsigned char *p);
int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in, 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_alert_code(int code);
int ssl3_alert_code(int code);
int ssl_ok(SSL *s);
SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
#endif
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