[openssl-commits] [openssl] master update

Matt Caswell matt at openssl.org
Sat Jan 31 18:11:04 UTC 2015


The branch master has been updated
       via  1d4d68570b8d3f214da0df57c5a629ced9668161 (commit)
       via  78cc1f03e8ef3a370f900ecda53c1c7e9ca22c78 (commit)
       via  0c2837564c878b06f87575361aa7d3b7562ae861 (commit)
       via  b6ba401497001c2f042feff693ed292b21c8369c (commit)
      from  4de8385796541c8c2973813f5da5fad173ba1ca2 (commit)


- Log -----------------------------------------------------------------
commit 1d4d68570b8d3f214da0df57c5a629ced9668161
Author: Richard Levitte <levitte at openssl.org>
Date:   Fri Jan 30 23:06:06 2015 +0000

    Make the libssl opaque changes compile on VMS
    
    Reviewed-by: Matt Caswell <matt at openssl.org>

commit 78cc1f03e8ef3a370f900ecda53c1c7e9ca22c78
Author: Matt Caswell <matt at openssl.org>
Date:   Wed Jan 28 11:44:34 2015 +0000

    Add changes entry for opaquifying of libssl structures
    
    Reviewed-by: Richard Levitte <levitte at openssl.org>

commit 0c2837564c878b06f87575361aa7d3b7562ae861
Author: Matt Caswell <matt at openssl.org>
Date:   Wed Jan 28 11:40:54 2015 +0000

    Remove OPENSSL_NO_SSL_INTERN as it is now redundant - all internals
    previously protected by this have been moved into non-public headers
    
    Reviewed-by: Richard Levitte <levitte at openssl.org>

commit b6ba401497001c2f042feff693ed292b21c8369c
Author: Matt Caswell <matt at openssl.org>
Date:   Tue Jan 27 20:11:24 2015 +0000

    Make libssl opaque. Move all structures that were previously protected by
    OPENSSL_NO_SSL_INTERN into internal header files.
    
    Reviewed-by: Richard Levitte <levitte at openssl.org>

-----------------------------------------------------------------------

Summary of changes:
 CHANGES        |    5 +
 apps/apps.h    |    2 -
 makevms.com    |    1 -
 ssl/bio_ssl.c  |    2 +-
 ssl/dtls1.h    |  143 --------
 ssl/ssl.h      |  702 --------------------------------------
 ssl/ssl3.h     |  204 -----------
 ssl/ssl_locl.h | 1036 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 ssl/ssl_task.c |    2 +-
 ssl/ssltest.c  |    2 +
 util/mkdef.pl  |    2 -
 11 files changed, 1045 insertions(+), 1056 deletions(-)

diff --git a/CHANGES b/CHANGES
index 26ea797..4b78387 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3,6 +3,11 @@
  _______________
 
  Changes between 1.0.2 and 1.1.0  [xx XXX xxxx]
+  *) All libssl internal structures have been removed from the public header
+     files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
+     now redundant). Users should not attempt to access internal structures
+     directly. Instead they should use the provided API functions.
+     [Matt Caswell]
 
   *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
      Access to deprecated functions can be re-enabled by running config with
diff --git a/apps/apps.h b/apps/apps.h
index 3f53bc1..2e346f9 100644
--- a/apps/apps.h
+++ b/apps/apps.h
@@ -383,6 +383,4 @@ int raw_write_stdout(const void *, int);
 # define TM_STOP         1
 double app_tminterval(int stop, int usertime);
 
-# define OPENSSL_NO_SSL_INTERN
-
 #endif
diff --git a/makevms.com b/makevms.com
index cf759e4..ac1ccc9 100755
--- a/makevms.com
+++ b/makevms.com
@@ -306,7 +306,6 @@ $ CONFIG_LOGICALS := AES,-
 		     SRP,-
 		     SRTP,-
 		     SSL3_METHOD,-
-		     SSL_INTERN,-
 		     SSL_TRACE,-
 		     STATIC_ENGINE,-
 		     STDIO,-
diff --git a/ssl/bio_ssl.c b/ssl/bio_ssl.c
index a0c583e..458e071 100644
--- a/ssl/bio_ssl.c
+++ b/ssl/bio_ssl.c
@@ -63,7 +63,7 @@
 #include <openssl/crypto.h>
 #include <openssl/bio.h>
 #include <openssl/err.h>
-#include <openssl/ssl.h>
+#include "ssl_locl.h"
 
 static int ssl_write(BIO *h, const char *buf, int num);
 static int ssl_read(BIO *h, char *buf, int size);
diff --git a/ssl/dtls1.h b/ssl/dtls1.h
index e2be78d..ff406d8 100644
--- a/ssl/dtls1.h
+++ b/ssl/dtls1.h
@@ -110,149 +110,6 @@ extern "C" {
 #  define DTLS1_AL_HEADER_LENGTH                   2
 # endif
 
-# ifndef OPENSSL_NO_SSL_INTERN
-
-#  ifndef OPENSSL_NO_SCTP
-#   define DTLS1_SCTP_AUTH_LABEL   "EXPORTER_DTLS_OVER_SCTP"
-#  endif
-
-/* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
-#  define DTLS1_MAX_MTU_OVERHEAD                   48
-
-typedef struct dtls1_bitmap_st {
-    unsigned long map;          /* track 32 packets on 32-bit systems and 64
-                                 * - on 64-bit systems */
-    unsigned char max_seq_num[8]; /* max record number seen so far, 64-bit
-                                   * value in big-endian encoding */
-} DTLS1_BITMAP;
-
-struct dtls1_retransmit_state {
-    EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
-    EVP_MD_CTX *write_hash;     /* used for mac generation */
-#  ifndef OPENSSL_NO_COMP
-    COMP_CTX *compress;         /* compression */
-#  else
-    char *compress;
-#  endif
-    SSL_SESSION *session;
-    unsigned short epoch;
-};
-
-struct hm_header_st {
-    unsigned char type;
-    unsigned long msg_len;
-    unsigned short seq;
-    unsigned long frag_off;
-    unsigned long frag_len;
-    unsigned int is_ccs;
-    struct dtls1_retransmit_state saved_retransmit_state;
-};
-
-struct ccs_header_st {
-    unsigned char type;
-    unsigned short seq;
-};
-
-struct dtls1_timeout_st {
-    /* Number of read timeouts so far */
-    unsigned int read_timeouts;
-    /* Number of write timeouts so far */
-    unsigned int write_timeouts;
-    /* Number of alerts received so far */
-    unsigned int num_alerts;
-};
-
-typedef struct record_pqueue_st {
-    unsigned short epoch;
-    pqueue q;
-} record_pqueue;
-
-typedef struct hm_fragment_st {
-    struct hm_header_st msg_header;
-    unsigned char *fragment;
-    unsigned char *reassembly;
-} hm_fragment;
-
-typedef struct dtls1_state_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 */
-    pqueue buffered_messages;
-    /* Buffered (sent) handshake records */
-    pqueue sent_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 link_mtu;      /* max on-the-wire DTLS packet size */
-    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;
-    /*
-     * Indicates when the last handshake msg or heartbeat sent will timeout
-     */
-    struct timeval next_timeout;
-    /* Timeout duration */
-    unsigned short timeout_duration;
-    /*
-     * 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;
-    /*
-     * Set when the handshake is ready to process peer's ChangeCipherSpec message.
-     * Cleared after the message has been processed.
-     */
-    unsigned int change_cipher_spec_ok;
-#  ifndef OPENSSL_NO_SCTP
-    /* used when SSL_ST_XX_FLUSH is entered */
-    int next_state;
-    int shutdown_received;
-#  endif
-} DTLS1_STATE;
-
-typedef struct dtls1_record_data_st {
-    unsigned char *packet;
-    unsigned int packet_length;
-    SSL3_BUFFER rbuf;
-    SSL3_RECORD rrec;
-#  ifndef OPENSSL_NO_SCTP
-    struct bio_dgram_sctp_rcvinfo recordinfo;
-#  endif
-} DTLS1_RECORD_DATA;
-
-# endif
 
 /* Timeout multipliers (timeout slice is defined in apps/timeouts.h */
 # define DTLS1_TMO_READ_COUNT                      2
diff --git a/ssl/ssl.h b/ssl/ssl.h
index 0a6f4da..df91c18 100644
--- a/ssl/ssl.h
+++ b/ssl/ssl.h
@@ -388,166 +388,6 @@ typedef int (*custom_ext_parse_cb) (SSL *s, unsigned int ext_type,
 
 # endif
 
-# ifndef OPENSSL_NO_SSL_INTERN
-
-/* used to hold info on the particular ciphers used */
-struct ssl_cipher_st {
-    int valid;
-    const char *name;           /* text name */
-    unsigned long id;           /* id, 4 bytes, first is version */
-    /*
-     * changed in 0.9.9: these four used to be portions of a single value
-     * 'algorithms'
-     */
-    unsigned long algorithm_mkey; /* key exchange algorithm */
-    unsigned long algorithm_auth; /* server authentication */
-    unsigned long algorithm_enc; /* symmetric encryption */
-    unsigned long algorithm_mac; /* symmetric authentication */
-    unsigned long algorithm_ssl; /* (major) protocol version */
-    unsigned long algo_strength; /* strength and export flags */
-    unsigned long algorithm2;   /* Extra flags */
-    int strength_bits;          /* Number of bits really used */
-    int alg_bits;               /* Number of bits for algorithm */
-};
-
-/* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */
-struct ssl_method_st {
-    int 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_read) (SSL *s, void *buf, int len);
-    int (*ssl_peek) (SSL *s, void *buf, int len);
-    int (*ssl_write) (SSL *s, const void *buf, int len);
-    int (*ssl_shutdown) (SSL *s);
-    int (*ssl_renegotiate) (SSL *s);
-    int (*ssl_renegotiate_check) (SSL *s);
-    long (*ssl_get_message) (SSL *s, int st1, int stn, int mt, long
-                             max, int *ok);
-    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);
-    int (*ssl_dispatch_alert) (SSL *s);
-    long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
-    long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
-    const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
-    int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
-    int (*ssl_pending) (const SSL *s);
-    int (*num_ciphers) (void);
-    const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
-    const struct ssl_method_st *(*get_ssl_method) (int version);
-    long (*get_timeout) (void);
-    const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
-    int (*ssl_version) (void);
-    long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
-    long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
-};
-
-/*-
- * Lets make this into an ASN.1 type structure as follows
- * SSL_SESSION_ID ::= SEQUENCE {
- *      version                 INTEGER,        -- structure version number
- *      SSLversion              INTEGER,        -- SSL version number
- *      Cipher                  OCTET STRING,   -- the 3 byte cipher ID
- *      Session_ID              OCTET STRING,   -- the Session ID
- *      Master_key              OCTET STRING,   -- the master key
- *      KRB5_principal          OCTET STRING    -- optional Kerberos principal
- *      Key_Arg [ 0 ] IMPLICIT  OCTET STRING,   -- the optional Key argument
- *      Time [ 1 ] EXPLICIT     INTEGER,        -- optional Start Time
- *      Timeout [ 2 ] EXPLICIT  INTEGER,        -- optional Timeout ins seconds
- *      Peer [ 3 ] EXPLICIT     X509,           -- optional Peer Certificate
- *      Session_ID_context [ 4 ] EXPLICIT OCTET STRING,   -- the Session ID context
- *      Verify_result [ 5 ] EXPLICIT INTEGER,   -- X509_V_... code for `Peer'
- *      HostName [ 6 ] EXPLICIT OCTET STRING,   -- optional HostName from servername TLS extension
- *      PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
- *      PSK_identity [ 8 ] EXPLICIT OCTET STRING,  -- optional PSK identity
- *      Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
- *      Ticket [10]             EXPLICIT OCTET STRING, -- session ticket (clients only)
- *      Compression_meth [11]   EXPLICIT OCTET STRING, -- optional compression method
- *      SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
- *      }
- * Look in ssl/ssl_asn1.c for more details
- * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
- */
-struct ssl_session_st {
-    int ssl_version;            /* what ssl version session info is being
-                                 * kept in here? */
-    int master_key_length;
-    unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
-    /* session_id - valid? */
-    unsigned int session_id_length;
-    unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
-    /*
-     * this is used to determine whether the session is being reused in the
-     * appropriate context. It is up to the application to set this, via
-     * SSL_new
-     */
-    unsigned int sid_ctx_length;
-    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
-#  ifndef OPENSSL_NO_KRB5
-    unsigned int krb5_client_princ_len;
-    unsigned char krb5_client_princ[SSL_MAX_KRB5_PRINCIPAL_LENGTH];
-#  endif                        /* OPENSSL_NO_KRB5 */
-#  ifndef OPENSSL_NO_PSK
-    char *psk_identity_hint;
-    char *psk_identity;
-#  endif
-    /*
-     * Used to indicate that session resumption is not allowed. Applications
-     * can also set this bit for a new session via not_resumable_session_cb
-     * to disable session caching and tickets.
-     */
-    int not_resumable;
-    /* The cert is the certificate used to establish this connection */
-    struct sess_cert_st /* SESS_CERT */ *sess_cert;
-    /*
-     * This is the cert for the other end. On clients, it will be the same as
-     * sess_cert->peer_key->x509 (the latter is not enough as sess_cert is
-     * not retained in the external representation of sessions, see
-     * ssl_asn1.c).
-     */
-    X509 *peer;
-    /*
-     * when app_verify_callback accepts a session where the peer's
-     * certificate is not ok, we must remember the error for session reuse:
-     */
-    long verify_result;         /* only for servers */
-    int references;
-    long timeout;
-    long time;
-    unsigned int compress_meth; /* Need to lookup the method */
-    const SSL_CIPHER *cipher;
-    unsigned long cipher_id;    /* when ASN.1 loaded, this needs to be used
-                                 * to load the 'cipher' structure */
-    STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
-    CRYPTO_EX_DATA ex_data;     /* application specific data */
-    /*
-     * These are used to make removal of session-ids more efficient and to
-     * implement a maximum cache size.
-     */
-    struct ssl_session_st *prev, *next;
-#  ifndef OPENSSL_NO_TLSEXT
-    char *tlsext_hostname;
-#   ifndef OPENSSL_NO_EC
-    size_t tlsext_ecpointformatlist_length;
-    unsigned char *tlsext_ecpointformatlist; /* peer's list */
-    size_t tlsext_ellipticcurvelist_length;
-    unsigned char *tlsext_ellipticcurvelist; /* peer's list */
-#   endif                       /* OPENSSL_NO_EC */
-    /* RFC4507 info */
-    unsigned char *tlsext_tick; /* Session ticket */
-    size_t tlsext_ticklen;      /* Session ticket length */
-    long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
-#  endif
-#  ifndef OPENSSL_NO_SRP
-    char *srp_username;
-#  endif
-};
-
-# endif
-
 /* Allow initial connection to servers that don't support RI */
 # define SSL_OP_LEGACY_SERVER_CONNECT                    0x00000004L
 # define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG         0x00000008L
@@ -818,27 +658,6 @@ void SSL_set_msg_callback(SSL *ssl,
 
 # ifndef OPENSSL_NO_SRP
 
-#  ifndef OPENSSL_NO_SSL_INTERN
-
-typedef struct srp_ctx_st {
-    /* param for all the callbacks */
-    void *SRP_cb_arg;
-    /* set client Hello login callback */
-    int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
-    /* set SRP N/g param callback for verification */
-    int (*SRP_verify_param_callback) (SSL *, void *);
-    /* set SRP client passwd callback */
-    char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
-    char *login;
-    BIGNUM *N, *g, *s, *B, *A;
-    BIGNUM *a, *b, *v;
-    char *info;
-    int strength;
-    unsigned long srp_Mask;
-} SRP_CTX;
-
-#  endif
-
 /* see tls_srp.c */
 int SSL_SRP_CTX_init(SSL *s);
 int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
@@ -878,271 +697,6 @@ typedef int (*GEN_SESSION_CB) (const SSL *ssl, unsigned char *id,
 
 typedef struct ssl_comp_st SSL_COMP;
 
-# ifndef OPENSSL_NO_SSL_INTERN
-
-struct ssl_comp_st {
-    int id;
-    const char *name;
-#  ifndef OPENSSL_NO_COMP
-    COMP_METHOD *method;
-#  else
-    char *method;
-#  endif
-};
-
-DECLARE_STACK_OF(SSL_COMP)
-DECLARE_LHASH_OF(SSL_SESSION);
-
-struct ssl_ctx_st {
-    const SSL_METHOD *method;
-    STACK_OF(SSL_CIPHER) *cipher_list;
-    /* same as above but sorted for lookup */
-    STACK_OF(SSL_CIPHER) *cipher_list_by_id;
-    struct x509_store_st /* X509_STORE */ *cert_store;
-    LHASH_OF(SSL_SESSION) *sessions;
-    /*
-     * Most session-ids that will be cached, default is
-     * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
-     */
-    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;
-    /*
-     * If timeout is not 0, it is the default timeout value set when
-     * SSL_new() is called.  This has been put in to make life easier to set
-     * things up
-     */
-    long session_timeout;
-    /*
-     * If this callback is not null, it will be called each time a session id
-     * is added to the cache.  If this function returns 1, it means that the
-     * callback will do a SSL_SESSION_free() when it has finished using it.
-     * Otherwise, on 0, it means the callback has finished with it. If
-     * remove_session_cb is not null, it will be called when a session-id is
-     * removed from the cache.  After the call, OpenSSL will
-     * SSL_SESSION_free() it.
-     */
-    int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
-    void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
-    SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
-                                    unsigned char *data, int len, int *copy);
-    struct {
-        int sess_connect;       /* SSL new conn - started */
-        int sess_connect_renegotiate; /* SSL reneg - requested */
-        int sess_connect_good;  /* SSL new conne/reneg - finished */
-        int sess_accept;        /* SSL new accept - started */
-        int sess_accept_renegotiate; /* SSL reneg - requested */
-        int sess_accept_good;   /* SSL accept/reneg - finished */
-        int sess_miss;          /* session lookup misses */
-        int sess_timeout;       /* reuse attempt on timeouted session */
-        int sess_cache_full;    /* session removed due to full cache */
-        int sess_hit;           /* session reuse actually done */
-        int sess_cb_hit;        /* session-id that was not in the cache was
-                                 * passed back via the callback.  This
-                                 * indicates that the application is
-                                 * supplying session-id's from other
-                                 * processes - spooky :-) */
-    } stats;
-
-    int references;
-
-    /* if defined, these override the X509_verify_cert() calls */
-    int (*app_verify_callback) (X509_STORE_CTX *, void *);
-    void *app_verify_arg;
-    /*
-     * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
-     * ('app_verify_callback' was called with just one argument)
-     */
-
-    /* Default password callback. */
-    pem_password_cb *default_passwd_callback;
-
-    /* Default password callback user data. */
-    void *default_passwd_callback_userdata;
-
-    /* get client cert callback */
-    int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
-
-    /* cookie generate callback */
-    int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
-                              unsigned int *cookie_len);
-
-    /* verify cookie callback */
-    int (*app_verify_cookie_cb) (SSL *ssl, unsigned char *cookie,
-                                 unsigned int cookie_len);
-
-    CRYPTO_EX_DATA ex_data;
-
-    const EVP_MD *md5;          /* For SSLv3/TLSv1 'ssl3-md5' */
-    const EVP_MD *sha1;         /* For SSLv3/TLSv1 'ssl3->sha1' */
-
-    STACK_OF(X509) *extra_certs;
-    STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
-
-    /* Default values used when no per-SSL value is defined follow */
-
-    /* used if SSL's info_callback is NULL */
-    void (*info_callback) (const SSL *ssl, int type, int val);
-
-    /* what we put in client cert requests */
-    STACK_OF(X509_NAME) *client_CA;
-
-    /*
-     * Default values to use in SSL structures follow (these are copied by
-     * SSL_new)
-     */
-
-    unsigned long options;
-    unsigned long mode;
-    long max_cert_list;
-
-    struct cert_st /* CERT */ *cert;
-    int read_ahead;
-
-    /* callback that allows applications to peek at protocol messages */
-    void (*msg_callback) (int write_p, int version, int content_type,
-                          const void *buf, size_t len, SSL *ssl, void *arg);
-    void *msg_callback_arg;
-
-    int verify_mode;
-    unsigned int sid_ctx_length;
-    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
-    /* called 'verify_callback' in the SSL */
-    int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
-
-    /* Default generate session ID callback. */
-    GEN_SESSION_CB generate_session_id;
-
-    X509_VERIFY_PARAM *param;
-
-    int quiet_shutdown;
-
-    /*
-     * 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
-
-#  ifndef OPENSSL_NO_TLSEXT
-    /* TLS extensions servername callback */
-    int (*tlsext_servername_callback) (SSL *, int *, void *);
-    void *tlsext_servername_arg;
-    /* 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];
-    /* 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;
-#  endif
-
-#  ifndef OPENSSL_NO_PSK
-    char *psk_identity_hint;
-    unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
-                                         char *identity,
-                                         unsigned int max_identity_len,
-                                         unsigned char *psk,
-                                         unsigned int max_psk_len);
-    unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
-                                         unsigned char *psk,
-                                         unsigned int max_psk_len);
-#  endif
-
-#  ifndef OPENSSL_NO_SRP
-    SRP_CTX srp_ctx;            /* ctx for SRP authentication */
-#  endif
-
-#  ifndef OPENSSL_NO_TLSEXT
-
-#   ifndef OPENSSL_NO_NEXTPROTONEG
-    /* Next protocol negotiation information */
-    /* (for experimental NPN extension). */
-
-    /*
-     * For a server, this contains a callback function by which the set of
-     * advertised protocols can be provided.
-     */
-    int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
-                                      unsigned int *len, void *arg);
-    void *next_protos_advertised_cb_arg;
-    /*
-     * For a client, this contains a callback function that selects the next
-     * protocol from the list provided by the server.
-     */
-    int (*next_proto_select_cb) (SSL *s, unsigned char **out,
-                                 unsigned char *outlen,
-                                 const unsigned char *in,
-                                 unsigned int inlen, void *arg);
-    void *next_proto_select_cb_arg;
-#   endif
-
-    /*
-     * ALPN information (we are in the process of transitioning from NPN to
-     * ALPN.)
-     */
-
-        /*-
-         * For a server, this contains a callback function that allows the
-         * server to select the protocol for the connection.
-         *   out: on successful return, this must point to the raw protocol
-         *        name (without the length prefix).
-         *   outlen: on successful return, this contains the length of |*out|.
-         *   in: points to the client's list of supported protocols in
-         *       wire-format.
-         *   inlen: the length of |in|.
-         */
-    int (*alpn_select_cb) (SSL *s,
-                           const unsigned char **out,
-                           unsigned char *outlen,
-                           const unsigned char *in,
-                           unsigned int inlen, void *arg);
-    void *alpn_select_cb_arg;
-
-    /*
-     * For a client, this contains the list of supported protocols in wire
-     * format.
-     */
-    unsigned char *alpn_client_proto_list;
-    unsigned alpn_client_proto_list_len;
-
-    /* SRTP profiles we are willing to do from RFC 5764 */
-    STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
-#  endif
-    /*
-     * Callback for disabling session caching and ticket support on a session
-     * basis, depending on the chosen cipher.
-     */
-    int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
-#  ifndef OPENSSL_NO_EC
-    /* EC extension values inherited by SSL structure */
-    size_t tlsext_ecpointformatlist_length;
-    unsigned char *tlsext_ecpointformatlist;
-    size_t tlsext_ellipticcurvelist_length;
-    unsigned char *tlsext_ellipticcurvelist;
-#  endif                        /* OPENSSL_NO_EC */
-};
-
-# endif
 
 # define SSL_SESS_CACHE_OFF                      0x0000
 # define SSL_SESS_CACHE_CLIENT                   0x0001
@@ -1376,262 +930,6 @@ int SSL_extension_supported(unsigned int ext_type);
 # define SSL_MAC_FLAG_READ_MAC_STREAM 1
 # define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
 
-# ifndef OPENSSL_NO_SSL_INTERN
-
-struct ssl_st {
-    /*
-     * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
-     * DTLS1_VERSION)
-     */
-    int version;
-    /* SSL_ST_CONNECT or SSL_ST_ACCEPT */
-    int type;
-    /* SSLv3 */
-    const SSL_METHOD *method;
-    /*
-     * There are 2 BIO's even though they are normally both the same.  This
-     * is so data can be read and written to different handlers
-     */
-    /* used by SSL_read */
-    BIO *rbio;
-    /* used by SSL_write */
-    BIO *wbio;
-    /* used during session-id reuse to concatenate messages */
-    BIO *bbio;
-    /*
-     * This holds a variable that indicates what we were doing when a 0 or -1
-     * is returned.  This is needed for non-blocking IO so we know what
-     * request needs re-doing when in SSL_accept or SSL_connect
-     */
-    int rwstate;
-    /* true when we are actually in SSL_accept() or SSL_connect() */
-    int in_handshake;
-    int (*handshake_func) (SSL *);
-    /*
-     * Imagine that here's a boolean member "init" that is switched as soon
-     * as SSL_set_{accept/connect}_state is called for the first time, so
-     * that "state" and "handshake_func" are properly initialized.  But as
-     * handshake_func is == 0 until then, we use this test instead of an
-     * "init" member.
-     */
-    /* are we the server side? - mostly used by SSL_clear */
-    int server;
-    /*
-     * Generate a new session or reuse an old one.
-     * NB: For servers, the 'new' session may actually be a previously
-     * cached session or even the previous session unless
-     * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
-     */
-    int new_session;
-    /* don't send shutdown packets */
-    int quiet_shutdown;
-    /* we have shut things down, 0x01 sent, 0x02 for received */
-    int shutdown;
-    /* where we are */
-    int state;
-    /* where we are when reading */
-    int rstate;
-    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;
-    struct ssl3_state_st *s3;   /* SSLv3 variables */
-    struct dtls1_state_st *d1;  /* DTLSv1 variables */
-    int read_ahead;             /* Read as many input bytes as possible (for
-                                 * non-blocking reads) */
-    /* callback that allows applications to peek at protocol messages */
-    void (*msg_callback) (int write_p, int version, int content_type,
-                          const void *buf, size_t len, SSL *ssl, void *arg);
-    void *msg_callback_arg;
-    int hit;                    /* reusing a previous session */
-    X509_VERIFY_PARAM *param;
-    /* crypto */
-    STACK_OF(SSL_CIPHER) *cipher_list;
-    STACK_OF(SSL_CIPHER) *cipher_list_by_id;
-    /*
-     * These are the ones being used, the ones in SSL_SESSION are the ones to
-     * be 'copied' into these ones
-     */
-    int mac_flags;
-    EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
-    EVP_MD_CTX *read_hash;      /* used for mac generation */
-#  ifndef OPENSSL_NO_COMP
-    COMP_CTX *expand;           /* uncompress */
-#  else
-    char *expand;
-#  endif
-    EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
-    EVP_MD_CTX *write_hash;     /* used for mac generation */
-#  ifndef OPENSSL_NO_COMP
-    COMP_CTX *compress;         /* compression */
-#  else
-    char *compress;
-#  endif
-    /* session info */
-    /* client cert? */
-    /* This is used to hold the server certificate used */
-    struct cert_st /* CERT */ *cert;
-    /*
-     * the session_id_context is used to ensure sessions are only reused in
-     * the appropriate context
-     */
-    unsigned int sid_ctx_length;
-    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
-    /* This can also be in the session once a session is established */
-    SSL_SESSION *session;
-    /* Default generate session ID callback. */
-    GEN_SESSION_CB generate_session_id;
-    /* Used in SSL3 */
-    /*
-     * 0 don't care about verify failure.
-     * 1 fail if verify fails
-     */
-    int verify_mode;
-    /* fail if callback returns 0 */
-    int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
-    /* optional informational callback */
-    void (*info_callback) (const SSL *ssl, int type, int val);
-    /* error bytes to be written */
-    int error;
-    /* actual code */
-    int error_code;
-#  ifndef OPENSSL_NO_KRB5
-    /* Kerberos 5 context */
-    KSSL_CTX *kssl_ctx;
-#  endif                        /* OPENSSL_NO_KRB5 */
-#  ifndef OPENSSL_NO_PSK
-    unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
-                                         char *identity,
-                                         unsigned int max_identity_len,
-                                         unsigned char *psk,
-                                         unsigned int max_psk_len);
-    unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
-                                         unsigned char *psk,
-                                         unsigned int max_psk_len);
-#  endif
-    SSL_CTX *ctx;
-    /*
-     * 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;
-    /* extra application data */
-    long verify_result;
-    CRYPTO_EX_DATA ex_data;
-    /* for server side, keep the list of CA_dn we can use */
-    STACK_OF(X509_NAME) *client_CA;
-    int references;
-    /* protocol behaviour */
-    unsigned long options;
-    /* API behaviour */
-    unsigned long mode;
-    long max_cert_list;
-    int first_packet;
-    /* what was passed, used for SSLv3/TLS rollback check */
-    int client_version;
-    unsigned int max_send_fragment;
-#  ifndef OPENSSL_NO_TLSEXT
-    /* 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;
-    char *tlsext_hostname;
-    /*-
-     * no further mod of servername
-     * 0 : call the servername extension callback.
-     * 1 : prepare 2, allow last ack just after in server callback.
-     * 2 : don't call servername callback, no ack in server hello
-     */
-    int servername_done;
-    /* certificate status request info */
-    /* Status type or -1 if no status type */
-    int tlsext_status_type;
-    /* 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;
-#   ifndef OPENSSL_NO_EC
-    size_t tlsext_ecpointformatlist_length;
-    /* our list */
-    unsigned char *tlsext_ecpointformatlist;
-    size_t tlsext_ellipticcurvelist_length;
-    /* our list */
-    unsigned char *tlsext_ellipticcurvelist;
-#   endif                       /* OPENSSL_NO_EC */
-    /* TLS Session Ticket extension override */
-    TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
-    /* 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;
-    SSL_CTX *initial_ctx;       /* initial ctx, used to store sessions */
-#   ifndef OPENSSL_NO_NEXTPROTONEG
-    /*
-     * Next protocol negotiation. For the client, this is the protocol that
-     * we sent in NextProtocol and is set when handling ServerHello
-     * extensions. For a server, this is the client's selected_protocol from
-     * NextProtocol and is set when handling the NextProtocol message, before
-     * the Finished message.
-     */
-    unsigned char *next_proto_negotiated;
-    unsigned char next_proto_negotiated_len;
-#   endif
-#   define session_ctx initial_ctx
-    /* What we'll do */
-    STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
-    /* What's been chosen */
-    SRTP_PROTECTION_PROFILE *srtp_profile;
-        /*-
-         * Is use of the Heartbeat extension negotiated?
-         *  0: disabled
-         *  1: enabled
-         *  2: enabled, but not allowed to send Requests
-         */
-    unsigned int tlsext_heartbeat;
-    /* Indicates if a HeartbeatRequest is in flight */
-    unsigned int tlsext_hb_pending;
-    /* HeartbeatRequest sequence number */
-    unsigned int tlsext_hb_seq;
-    /*
-     * For a client, this contains the list of supported protocols in wire
-     * format.
-     */
-    unsigned char *alpn_client_proto_list;
-    unsigned alpn_client_proto_list_len;
-#  else
-#   define session_ctx ctx
-#  endif                        /* OPENSSL_NO_TLSEXT */
-    /*-
-     * 1 if we are renegotiating.
-     * 2 if we are a server and are inside a handshake
-     * (i.e. not just sending a HelloRequest)
-     */
-    int renegotiate;
-#  ifndef OPENSSL_NO_SRP
-    /* ctx for SRP authentication */
-    SRP_CTX srp_ctx;
-#  endif
-    /*
-     * Callback for disabling session caching and ticket support on a session
-     * basis, depending on the chosen cipher.
-     */
-    int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
-};
-
-# endif
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/ssl/ssl3.h b/ssl/ssl3.h
index 23eb156..7d16d70 100644
--- a/ssl/ssl3.h
+++ b/ssl/ssl3.h
@@ -380,62 +380,6 @@ extern "C" {
 # define TLS1_HB_REQUEST         1
 # define TLS1_HB_RESPONSE        2
 
-# ifndef OPENSSL_NO_SSL_INTERN
-
-typedef struct ssl3_record_st {
-    /* type of record */
-    /*
-     * r
-     */ int type;
-    /* How many bytes available */
-    /*
-     * rw
-     */ unsigned int length;
-    /*
-     * How many bytes were available before padding was removed? This is used
-     * to implement the MAC check in constant time for CBC records.
-     */
-    /*
-     * rw
-     */ unsigned int orig_len;
-    /* read/write offset into 'buf' */
-    /*
-     * r
-     */ unsigned int off;
-    /* pointer to the record data */
-    /*
-     * rw
-     */ unsigned char *data;
-    /* where the decode bytes are */
-    /*
-     * rw
-     */ unsigned char *input;
-    /* only used with decompression - malloc()ed */
-    /*
-     * r
-     */ unsigned char *comp;
-    /* epoch number, needed by DTLS1 */
-    /*
-     * r
-     */ unsigned long epoch;
-    /* sequence number, needed by DTLS1 */
-    /*
-     * r
-     */ unsigned char seq_num[8];
-} SSL3_RECORD;
-
-typedef struct ssl3_buffer_st {
-    /* at least SSL3_RT_MAX_PACKET_SIZE bytes, see ssl3_setup_buffers() */
-    unsigned char *buf;
-    /* buffer size */
-    size_t len;
-    /* where to 'copy from' */
-    int offset;
-    /* how many bytes left */
-    int left;
-} SSL3_BUFFER;
-
-# endif
 
 # define SSL3_CT_RSA_SIGN                        1
 # define SSL3_CT_DSS_SIGN                        2
@@ -465,154 +409,6 @@ typedef struct ssl3_buffer_st {
 /* Set if we encrypt then mac instead of usual mac then encrypt */
 # define TLS1_FLAGS_ENCRYPT_THEN_MAC             0x0100
 
-# ifndef OPENSSL_NO_SSL_INTERN
-
-typedef struct ssl3_state_st {
-    long flags;
-    int delay_buf_pop_ret;
-    unsigned char read_sequence[8];
-    int read_mac_secret_size;
-    unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
-    unsigned char write_sequence[8];
-    int write_mac_secret_size;
-    unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
-    unsigned char server_random[SSL3_RANDOM_SIZE];
-    unsigned char client_random[SSL3_RANDOM_SIZE];
-    /* flags for countermeasure against known-IV weakness */
-    int need_empty_fragments;
-    int empty_fragment_done;
-    /* The value of 'extra' when the buffers were initialized */
-    int init_extra;
-    SSL3_BUFFER rbuf;           /* read IO goes into here */
-    SSL3_BUFFER wbuf;           /* write IO goes into here */
-    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;
-    /* used during startup, digest all incoming/outgoing packets */
-    BIO *handshake_buffer;
-    /*
-     * When set of handshake digests is determined, buffer is hashed and
-     * freed and MD_CTX-es for all required digests are stored in this array
-     */
-    EVP_MD_CTX **handshake_dgst;
-    /*
-     * Set whenever an expected ChangeCipherSpec message is processed.
-     * Unset when the peer's Finished message is received.
-     * Unexpected ChangeCipherSpec messages trigger a fatal alert.
-     */
-    int change_cipher_spec;
-    int warn_alert;
-    int fatal_alert;
-    /*
-     * we allow one fatal and one warning alert to be outstanding, send close
-     * alert via the warning alert
-     */
-    int alert_dispatch;
-    unsigned char send_alert[2];
-    /*
-     * This flag is set when we should renegotiate ASAP, basically when there
-     * is no more data in the read or write buffers
-     */
-    int renegotiate;
-    int total_renegotiations;
-    int num_renegotiations;
-    int in_read_app_data;
-    struct {
-        /* actually only 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;
-        /* used to hold the new cipher we are going to use */
-        const SSL_CIPHER *new_cipher;
-#  ifndef OPENSSL_NO_DH
-        DH *dh;
-#  endif
-#  ifndef OPENSSL_NO_ECDH
-        EC_KEY *ecdh;           /* holds short lived ECDH key */
-#  endif
-        /* used when SSL_ST_FLUSH_DATA is entered */
-        int next_state;
-        int reuse_message;
-        /* used for certificate requests */
-        int cert_req;
-        int ctype_num;
-        char ctype[SSL3_CT_NUMBER];
-        STACK_OF(X509_NAME) *ca_names;
-        int use_rsa_tmp;
-        int key_block_length;
-        unsigned char *key_block;
-        const EVP_CIPHER *new_sym_enc;
-        const EVP_MD *new_hash;
-        int new_mac_pkey_type;
-        int new_mac_secret_size;
-#  ifndef OPENSSL_NO_COMP
-        const SSL_COMP *new_compression;
-#  else
-        char *new_compression;
-#  endif
-        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 */
-
-#  ifndef OPENSSL_NO_NEXTPROTONEG
-    /*
-     * Set if we saw the Next Protocol Negotiation extension from our peer.
-     */
-    int next_proto_neg_seen;
-#  endif
-
-#  ifndef OPENSSL_NO_TLSEXT
-
-    /*
-     * ALPN information (we are in the process of transitioning from NPN to
-     * ALPN.)
-     */
-
-    /*
-     * In a server these point to the selected ALPN protocol after the
-     * ClientHello has been processed. In a client these contain the protocol
-     * that the server selected once the ServerHello has been processed.
-     */
-    unsigned char *alpn_selected;
-    unsigned alpn_selected_len;
-
-#   ifndef OPENSSL_NO_EC
-    /*
-     * This is set to true if we believe that this is a version of Safari
-     * running on OS X 10.6 or newer. We wish to know this because Safari on
-     * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
-     */
-    char is_probably_safari;
-#   endif                       /* !OPENSSL_NO_EC */
-
-#  endif                        /* !OPENSSL_NO_TLSEXT */
-} SSL3_STATE;
-
-# endif
 
 /* SSLv3 */
 /*
diff --git a/ssl/ssl_locl.h b/ssl/ssl_locl.h
index f3ce460..56d6108 100644
--- a/ssl/ssl_locl.h
+++ b/ssl/ssl_locl.h
@@ -520,6 +520,1042 @@
 #define CERT_PRIVATE_KEY        2
 */
 
+/* used to hold info on the particular ciphers used */
+struct ssl_cipher_st {
+    int valid;
+    const char *name;           /* text name */
+    unsigned long id;           /* id, 4 bytes, first is version */
+    /*
+     * changed in 0.9.9: these four used to be portions of a single value
+     * 'algorithms'
+     */
+    unsigned long algorithm_mkey; /* key exchange algorithm */
+    unsigned long algorithm_auth; /* server authentication */
+    unsigned long algorithm_enc; /* symmetric encryption */
+    unsigned long algorithm_mac; /* symmetric authentication */
+    unsigned long algorithm_ssl; /* (major) protocol version */
+    unsigned long algo_strength; /* strength and export flags */
+    unsigned long algorithm2;   /* Extra flags */
+    int strength_bits;          /* Number of bits really used */
+    int alg_bits;               /* Number of bits for algorithm */
+};
+
+/* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */
+struct ssl_method_st {
+    int 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_read) (SSL *s, void *buf, int len);
+    int (*ssl_peek) (SSL *s, void *buf, int len);
+    int (*ssl_write) (SSL *s, const void *buf, int len);
+    int (*ssl_shutdown) (SSL *s);
+    int (*ssl_renegotiate) (SSL *s);
+    int (*ssl_renegotiate_check) (SSL *s);
+    long (*ssl_get_message) (SSL *s, int st1, int stn, int mt, long
+                             max, int *ok);
+    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);
+    int (*ssl_dispatch_alert) (SSL *s);
+    long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
+    long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
+    const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
+    int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
+    int (*ssl_pending) (const SSL *s);
+    int (*num_ciphers) (void);
+    const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
+    const struct ssl_method_st *(*get_ssl_method) (int version);
+    long (*get_timeout) (void);
+    const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
+    int (*ssl_version) (void);
+    long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
+    long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
+};
+
+/*-
+ * Lets make this into an ASN.1 type structure as follows
+ * SSL_SESSION_ID ::= SEQUENCE {
+ *      version                 INTEGER,        -- structure version number
+ *      SSLversion              INTEGER,        -- SSL version number
+ *      Cipher                  OCTET STRING,   -- the 3 byte cipher ID
+ *      Session_ID              OCTET STRING,   -- the Session ID
+ *      Master_key              OCTET STRING,   -- the master key
+ *      KRB5_principal          OCTET STRING    -- optional Kerberos principal
+ *      Key_Arg [ 0 ] IMPLICIT  OCTET STRING,   -- the optional Key argument
+ *      Time [ 1 ] EXPLICIT     INTEGER,        -- optional Start Time
+ *      Timeout [ 2 ] EXPLICIT  INTEGER,        -- optional Timeout ins seconds
+ *      Peer [ 3 ] EXPLICIT     X509,           -- optional Peer Certificate
+ *      Session_ID_context [ 4 ] EXPLICIT OCTET STRING,   -- the Session ID context
+ *      Verify_result [ 5 ] EXPLICIT INTEGER,   -- X509_V_... code for `Peer'
+ *      HostName [ 6 ] EXPLICIT OCTET STRING,   -- optional HostName from servername TLS extension
+ *      PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
+ *      PSK_identity [ 8 ] EXPLICIT OCTET STRING,  -- optional PSK identity
+ *      Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
+ *      Ticket [10]             EXPLICIT OCTET STRING, -- session ticket (clients only)
+ *      Compression_meth [11]   EXPLICIT OCTET STRING, -- optional compression method
+ *      SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
+ *      }
+ * Look in ssl/ssl_asn1.c for more details
+ * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
+ */
+struct ssl_session_st {
+    int ssl_version;            /* what ssl version session info is being
+                                 * kept in here? */
+    int master_key_length;
+    unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
+    /* session_id - valid? */
+    unsigned int session_id_length;
+    unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
+    /*
+     * this is used to determine whether the session is being reused in the
+     * appropriate context. It is up to the application to set this, via
+     * SSL_new
+     */
+    unsigned int sid_ctx_length;
+    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
+# ifndef OPENSSL_NO_KRB5
+    unsigned int krb5_client_princ_len;
+    unsigned char krb5_client_princ[SSL_MAX_KRB5_PRINCIPAL_LENGTH];
+# endif                        /* OPENSSL_NO_KRB5 */
+# ifndef OPENSSL_NO_PSK
+    char *psk_identity_hint;
+    char *psk_identity;
+# endif
+    /*
+     * Used to indicate that session resumption is not allowed. Applications
+     * can also set this bit for a new session via not_resumable_session_cb
+     * to disable session caching and tickets.
+     */
+    int not_resumable;
+    /* The cert is the certificate used to establish this connection */
+    struct sess_cert_st /* SESS_CERT */ *sess_cert;
+    /*
+     * This is the cert for the other end. On clients, it will be the same as
+     * sess_cert->peer_key->x509 (the latter is not enough as sess_cert is
+     * not retained in the external representation of sessions, see
+     * ssl_asn1.c).
+     */
+    X509 *peer;
+    /*
+     * when app_verify_callback accepts a session where the peer's
+     * certificate is not ok, we must remember the error for session reuse:
+     */
+    long verify_result;         /* only for servers */
+    int references;
+    long timeout;
+    long time;
+    unsigned int compress_meth; /* Need to lookup the method */
+    const SSL_CIPHER *cipher;
+    unsigned long cipher_id;    /* when ASN.1 loaded, this needs to be used
+                                 * to load the 'cipher' structure */
+    STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
+    CRYPTO_EX_DATA ex_data;     /* application specific data */
+    /*
+     * These are used to make removal of session-ids more efficient and to
+     * implement a maximum cache size.
+     */
+    struct ssl_session_st *prev, *next;
+# ifndef OPENSSL_NO_TLSEXT
+    char *tlsext_hostname;
+#  ifndef OPENSSL_NO_EC
+    size_t tlsext_ecpointformatlist_length;
+    unsigned char *tlsext_ecpointformatlist; /* peer's list */
+    size_t tlsext_ellipticcurvelist_length;
+    unsigned char *tlsext_ellipticcurvelist; /* peer's list */
+#  endif                       /* OPENSSL_NO_EC */
+    /* RFC4507 info */
+    unsigned char *tlsext_tick; /* Session ticket */
+    size_t tlsext_ticklen;      /* Session ticket length */
+    long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
+# endif
+# ifndef OPENSSL_NO_SRP
+    char *srp_username;
+# endif
+};
+
+
+# ifndef OPENSSL_NO_SRP
+
+typedef struct srp_ctx_st {
+    /* param for all the callbacks */
+    void *SRP_cb_arg;
+    /* set client Hello login callback */
+    int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
+    /* set SRP N/g param callback for verification */
+    int (*SRP_verify_param_callback) (SSL *, void *);
+    /* set SRP client passwd callback */
+    char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
+    char *login;
+    BIGNUM *N, *g, *s, *B, *A;
+    BIGNUM *a, *b, *v;
+    char *info;
+    int strength;
+    unsigned long srp_Mask;
+} SRP_CTX;
+
+# endif
+
+
+struct ssl_comp_st {
+    int id;
+    const char *name;
+#  ifndef OPENSSL_NO_COMP
+    COMP_METHOD *method;
+#  else
+    char *method;
+#  endif
+};
+
+DECLARE_STACK_OF(SSL_COMP)
+DECLARE_LHASH_OF(SSL_SESSION);
+
+struct ssl_ctx_st {
+    const SSL_METHOD *method;
+    STACK_OF(SSL_CIPHER) *cipher_list;
+    /* same as above but sorted for lookup */
+    STACK_OF(SSL_CIPHER) *cipher_list_by_id;
+    struct x509_store_st /* X509_STORE */ *cert_store;
+    LHASH_OF(SSL_SESSION) *sessions;
+    /*
+     * Most session-ids that will be cached, default is
+     * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
+     */
+    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;
+    /*
+     * If timeout is not 0, it is the default timeout value set when
+     * SSL_new() is called.  This has been put in to make life easier to set
+     * things up
+     */
+    long session_timeout;
+    /*
+     * If this callback is not null, it will be called each time a session id
+     * is added to the cache.  If this function returns 1, it means that the
+     * callback will do a SSL_SESSION_free() when it has finished using it.
+     * Otherwise, on 0, it means the callback has finished with it. If
+     * remove_session_cb is not null, it will be called when a session-id is
+     * removed from the cache.  After the call, OpenSSL will
+     * SSL_SESSION_free() it.
+     */
+    int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
+    void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
+    SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
+                                    unsigned char *data, int len, int *copy);
+    struct {
+        int sess_connect;       /* SSL new conn - started */
+        int sess_connect_renegotiate; /* SSL reneg - requested */
+        int sess_connect_good;  /* SSL new conne/reneg - finished */
+        int sess_accept;        /* SSL new accept - started */
+        int sess_accept_renegotiate; /* SSL reneg - requested */
+        int sess_accept_good;   /* SSL accept/reneg - finished */
+        int sess_miss;          /* session lookup misses */
+        int sess_timeout;       /* reuse attempt on timeouted session */
+        int sess_cache_full;    /* session removed due to full cache */
+        int sess_hit;           /* session reuse actually done */
+        int sess_cb_hit;        /* session-id that was not in the cache was
+                                 * passed back via the callback.  This
+                                 * indicates that the application is
+                                 * supplying session-id's from other
+                                 * processes - spooky :-) */
+    } stats;
+
+    int references;
+
+    /* if defined, these override the X509_verify_cert() calls */
+    int (*app_verify_callback) (X509_STORE_CTX *, void *);
+    void *app_verify_arg;
+    /*
+     * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
+     * ('app_verify_callback' was called with just one argument)
+     */
+
+    /* Default password callback. */
+    pem_password_cb *default_passwd_callback;
+
+    /* Default password callback user data. */
+    void *default_passwd_callback_userdata;
+
+    /* get client cert callback */
+    int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
+
+    /* cookie generate callback */
+    int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
+                              unsigned int *cookie_len);
+
+    /* verify cookie callback */
+    int (*app_verify_cookie_cb) (SSL *ssl, unsigned char *cookie,
+                                 unsigned int cookie_len);
+
+    CRYPTO_EX_DATA ex_data;
+
+    const EVP_MD *md5;          /* For SSLv3/TLSv1 'ssl3-md5' */
+    const EVP_MD *sha1;         /* For SSLv3/TLSv1 'ssl3->sha1' */
+
+    STACK_OF(X509) *extra_certs;
+    STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
+
+    /* Default values used when no per-SSL value is defined follow */
+
+    /* used if SSL's info_callback is NULL */
+    void (*info_callback) (const SSL *ssl, int type, int val);
+
+    /* what we put in client cert requests */
+    STACK_OF(X509_NAME) *client_CA;
+
+    /*
+     * Default values to use in SSL structures follow (these are copied by
+     * SSL_new)
+     */
+
+    unsigned long options;
+    unsigned long mode;
+    long max_cert_list;
+
+    struct cert_st /* CERT */ *cert;
+    int read_ahead;
+
+    /* callback that allows applications to peek at protocol messages */
+    void (*msg_callback) (int write_p, int version, int content_type,
+                          const void *buf, size_t len, SSL *ssl, void *arg);
+    void *msg_callback_arg;
+
+    int verify_mode;
+    unsigned int sid_ctx_length;
+    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
+    /* called 'verify_callback' in the SSL */
+    int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
+
+    /* Default generate session ID callback. */
+    GEN_SESSION_CB generate_session_id;
+
+    X509_VERIFY_PARAM *param;
+
+    int quiet_shutdown;
+
+    /*
+     * 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
+
+#  ifndef OPENSSL_NO_TLSEXT
+    /* TLS extensions servername callback */
+    int (*tlsext_servername_callback) (SSL *, int *, void *);
+    void *tlsext_servername_arg;
+    /* 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];
+    /* 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;
+#  endif
+
+#  ifndef OPENSSL_NO_PSK
+    char *psk_identity_hint;
+    unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
+                                         char *identity,
+                                         unsigned int max_identity_len,
+                                         unsigned char *psk,
+                                         unsigned int max_psk_len);
+    unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
+                                         unsigned char *psk,
+                                         unsigned int max_psk_len);
+#  endif
+
+#  ifndef OPENSSL_NO_SRP
+    SRP_CTX srp_ctx;            /* ctx for SRP authentication */
+#  endif
+
+#  ifndef OPENSSL_NO_TLSEXT
+
+#   ifndef OPENSSL_NO_NEXTPROTONEG
+    /* Next protocol negotiation information */
+    /* (for experimental NPN extension). */
+
+    /*
+     * For a server, this contains a callback function by which the set of
+     * advertised protocols can be provided.
+     */
+    int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
+                                      unsigned int *len, void *arg);
+    void *next_protos_advertised_cb_arg;
+    /*
+     * For a client, this contains a callback function that selects the next
+     * protocol from the list provided by the server.
+     */
+    int (*next_proto_select_cb) (SSL *s, unsigned char **out,
+                                 unsigned char *outlen,
+                                 const unsigned char *in,
+                                 unsigned int inlen, void *arg);
+    void *next_proto_select_cb_arg;
+#   endif
+
+    /*
+     * ALPN information (we are in the process of transitioning from NPN to
+     * ALPN.)
+     */
+
+        /*-
+         * For a server, this contains a callback function that allows the
+         * server to select the protocol for the connection.
+         *   out: on successful return, this must point to the raw protocol
+         *        name (without the length prefix).
+         *   outlen: on successful return, this contains the length of |*out|.
+         *   in: points to the client's list of supported protocols in
+         *       wire-format.
+         *   inlen: the length of |in|.
+         */
+    int (*alpn_select_cb) (SSL *s,
+                           const unsigned char **out,
+                           unsigned char *outlen,
+                           const unsigned char *in,
+                           unsigned int inlen, void *arg);
+    void *alpn_select_cb_arg;
+
+    /*
+     * For a client, this contains the list of supported protocols in wire
+     * format.
+     */
+    unsigned char *alpn_client_proto_list;
+    unsigned alpn_client_proto_list_len;
+
+    /* SRTP profiles we are willing to do from RFC 5764 */
+    STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
+#  endif
+    /*
+     * Callback for disabling session caching and ticket support on a session
+     * basis, depending on the chosen cipher.
+     */
+    int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
+#  ifndef OPENSSL_NO_EC
+    /* EC extension values inherited by SSL structure */
+    size_t tlsext_ecpointformatlist_length;
+    unsigned char *tlsext_ecpointformatlist;
+    size_t tlsext_ellipticcurvelist_length;
+    unsigned char *tlsext_ellipticcurvelist;
+#  endif                        /* OPENSSL_NO_EC */
+};
+
+
+struct ssl_st {
+    /*
+     * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
+     * DTLS1_VERSION)
+     */
+    int version;
+    /* SSL_ST_CONNECT or SSL_ST_ACCEPT */
+    int type;
+    /* SSLv3 */
+    const SSL_METHOD *method;
+    /*
+     * There are 2 BIO's even though they are normally both the same.  This
+     * is so data can be read and written to different handlers
+     */
+    /* used by SSL_read */
+    BIO *rbio;
+    /* used by SSL_write */
+    BIO *wbio;
+    /* used during session-id reuse to concatenate messages */
+    BIO *bbio;
+    /*
+     * This holds a variable that indicates what we were doing when a 0 or -1
+     * is returned.  This is needed for non-blocking IO so we know what
+     * request needs re-doing when in SSL_accept or SSL_connect
+     */
+    int rwstate;
+    /* true when we are actually in SSL_accept() or SSL_connect() */
+    int in_handshake;
+    int (*handshake_func) (SSL *);
+    /*
+     * Imagine that here's a boolean member "init" that is switched as soon
+     * as SSL_set_{accept/connect}_state is called for the first time, so
+     * that "state" and "handshake_func" are properly initialized.  But as
+     * handshake_func is == 0 until then, we use this test instead of an
+     * "init" member.
+     */
+    /* are we the server side? - mostly used by SSL_clear */
+    int server;
+    /*
+     * Generate a new session or reuse an old one.
+     * NB: For servers, the 'new' session may actually be a previously
+     * cached session or even the previous session unless
+     * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
+     */
+    int new_session;
+    /* don't send shutdown packets */
+    int quiet_shutdown;
+    /* we have shut things down, 0x01 sent, 0x02 for received */
+    int shutdown;
+    /* where we are */
+    int state;
+    /* where we are when reading */
+    int rstate;
+    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;
+    struct ssl3_state_st *s3;   /* SSLv3 variables */
+    struct dtls1_state_st *d1;  /* DTLSv1 variables */
+    int read_ahead;             /* Read as many input bytes as possible (for
+                                 * non-blocking reads) */
+    /* callback that allows applications to peek at protocol messages */
+    void (*msg_callback) (int write_p, int version, int content_type,
+                          const void *buf, size_t len, SSL *ssl, void *arg);
+    void *msg_callback_arg;
+    int hit;                    /* reusing a previous session */
+    X509_VERIFY_PARAM *param;
+    /* crypto */
+    STACK_OF(SSL_CIPHER) *cipher_list;
+    STACK_OF(SSL_CIPHER) *cipher_list_by_id;
+    /*
+     * These are the ones being used, the ones in SSL_SESSION are the ones to
+     * be 'copied' into these ones
+     */
+    int mac_flags;
+    EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
+    EVP_MD_CTX *read_hash;      /* used for mac generation */
+#  ifndef OPENSSL_NO_COMP
+    COMP_CTX *expand;           /* uncompress */
+#  else
+    char *expand;
+#  endif
+    EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
+    EVP_MD_CTX *write_hash;     /* used for mac generation */
+#  ifndef OPENSSL_NO_COMP
+    COMP_CTX *compress;         /* compression */
+#  else
+    char *compress;
+#  endif
+    /* session info */
+    /* client cert? */
+    /* This is used to hold the server certificate used */
+    struct cert_st /* CERT */ *cert;
+    /*
+     * the session_id_context is used to ensure sessions are only reused in
+     * the appropriate context
+     */
+    unsigned int sid_ctx_length;
+    unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
+    /* This can also be in the session once a session is established */
+    SSL_SESSION *session;
+    /* Default generate session ID callback. */
+    GEN_SESSION_CB generate_session_id;
+    /* Used in SSL3 */
+    /*
+     * 0 don't care about verify failure.
+     * 1 fail if verify fails
+     */
+    int verify_mode;
+    /* fail if callback returns 0 */
+    int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
+    /* optional informational callback */
+    void (*info_callback) (const SSL *ssl, int type, int val);
+    /* error bytes to be written */
+    int error;
+    /* actual code */
+    int error_code;
+#  ifndef OPENSSL_NO_KRB5
+    /* Kerberos 5 context */
+    KSSL_CTX *kssl_ctx;
+#  endif                        /* OPENSSL_NO_KRB5 */
+#  ifndef OPENSSL_NO_PSK
+    unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
+                                         char *identity,
+                                         unsigned int max_identity_len,
+                                         unsigned char *psk,
+                                         unsigned int max_psk_len);
+    unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
+                                         unsigned char *psk,
+                                         unsigned int max_psk_len);
+#  endif
+    SSL_CTX *ctx;
+    /*
+     * 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;
+    /* extra application data */
+    long verify_result;
+    CRYPTO_EX_DATA ex_data;
+    /* for server side, keep the list of CA_dn we can use */
+    STACK_OF(X509_NAME) *client_CA;
+    int references;
+    /* protocol behaviour */
+    unsigned long options;
+    /* API behaviour */
+    unsigned long mode;
+    long max_cert_list;
+    int first_packet;
+    /* what was passed, used for SSLv3/TLS rollback check */
+    int client_version;
+    unsigned int max_send_fragment;
+#  ifndef OPENSSL_NO_TLSEXT
+    /* 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;
+    char *tlsext_hostname;
+    /*-
+     * no further mod of servername
+     * 0 : call the servername extension callback.
+     * 1 : prepare 2, allow last ack just after in server callback.
+     * 2 : don't call servername callback, no ack in server hello
+     */
+    int servername_done;
+    /* certificate status request info */
+    /* Status type or -1 if no status type */
+    int tlsext_status_type;
+    /* 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;
+#   ifndef OPENSSL_NO_EC
+    size_t tlsext_ecpointformatlist_length;
+    /* our list */
+    unsigned char *tlsext_ecpointformatlist;
+    size_t tlsext_ellipticcurvelist_length;
+    /* our list */
+    unsigned char *tlsext_ellipticcurvelist;
+#   endif                       /* OPENSSL_NO_EC */
+    /* TLS Session Ticket extension override */
+    TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
+    /* 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;
+    SSL_CTX *initial_ctx;       /* initial ctx, used to store sessions */
+#   ifndef OPENSSL_NO_NEXTPROTONEG
+    /*
+     * Next protocol negotiation. For the client, this is the protocol that
+     * we sent in NextProtocol and is set when handling ServerHello
+     * extensions. For a server, this is the client's selected_protocol from
+     * NextProtocol and is set when handling the NextProtocol message, before
+     * the Finished message.
+     */
+    unsigned char *next_proto_negotiated;
+    unsigned char next_proto_negotiated_len;
+#   endif
+#   define session_ctx initial_ctx
+    /* What we'll do */
+    STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
+    /* What's been chosen */
+    SRTP_PROTECTION_PROFILE *srtp_profile;
+        /*-
+         * Is use of the Heartbeat extension negotiated?
+         *  0: disabled
+         *  1: enabled
+         *  2: enabled, but not allowed to send Requests
+         */
+    unsigned int tlsext_heartbeat;
+    /* Indicates if a HeartbeatRequest is in flight */
+    unsigned int tlsext_hb_pending;
+    /* HeartbeatRequest sequence number */
+    unsigned int tlsext_hb_seq;
+    /*
+     * For a client, this contains the list of supported protocols in wire
+     * format.
+     */
+    unsigned char *alpn_client_proto_list;
+    unsigned alpn_client_proto_list_len;
+#  else
+#   define session_ctx ctx
+#  endif                        /* OPENSSL_NO_TLSEXT */
+    /*-
+     * 1 if we are renegotiating.
+     * 2 if we are a server and are inside a handshake
+     * (i.e. not just sending a HelloRequest)
+     */
+    int renegotiate;
+#  ifndef OPENSSL_NO_SRP
+    /* ctx for SRP authentication */
+    SRP_CTX srp_ctx;
+#  endif
+    /*
+     * Callback for disabling session caching and ticket support on a session
+     * basis, depending on the chosen cipher.
+     */
+    int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
+};
+
+typedef struct ssl3_record_st {
+    /* type of record */
+    /*
+     * r
+     */ int type;
+    /* How many bytes available */
+    /*
+     * rw
+     */ unsigned int length;
+    /*
+     * How many bytes were available before padding was removed? This is used
+     * to implement the MAC check in constant time for CBC records.
+     */
+    /*
+     * rw
+     */ unsigned int orig_len;
+    /* read/write offset into 'buf' */
+    /*
+     * r
+     */ unsigned int off;
+    /* pointer to the record data */
+    /*
+     * rw
+     */ unsigned char *data;
+    /* where the decode bytes are */
+    /*
+     * rw
+     */ unsigned char *input;
+    /* only used with decompression - malloc()ed */
+    /*
+     * r
+     */ unsigned char *comp;
+    /* epoch number, needed by DTLS1 */
+    /*
+     * r
+     */ unsigned long epoch;
+    /* sequence number, needed by DTLS1 */
+    /*
+     * r
+     */ unsigned char seq_num[8];
+} SSL3_RECORD;
+
+typedef struct ssl3_buffer_st {
+    /* at least SSL3_RT_MAX_PACKET_SIZE bytes, see ssl3_setup_buffers() */
+    unsigned char *buf;
+    /* buffer size */
+    size_t len;
+    /* where to 'copy from' */
+    int offset;
+    /* how many bytes left */
+    int left;
+} SSL3_BUFFER;
+
+typedef struct ssl3_state_st {
+    long flags;
+    int delay_buf_pop_ret;
+    unsigned char read_sequence[8];
+    int read_mac_secret_size;
+    unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
+    unsigned char write_sequence[8];
+    int write_mac_secret_size;
+    unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
+    unsigned char server_random[SSL3_RANDOM_SIZE];
+    unsigned char client_random[SSL3_RANDOM_SIZE];
+    /* flags for countermeasure against known-IV weakness */
+    int need_empty_fragments;
+    int empty_fragment_done;
+    /* The value of 'extra' when the buffers were initialized */
+    int init_extra;
+    SSL3_BUFFER rbuf;           /* read IO goes into here */
+    SSL3_BUFFER wbuf;           /* write IO goes into here */
+    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;
+    /* used during startup, digest all incoming/outgoing packets */
+    BIO *handshake_buffer;
+    /*
+     * When set of handshake digests is determined, buffer is hashed and
+     * freed and MD_CTX-es for all required digests are stored in this array
+     */
+    EVP_MD_CTX **handshake_dgst;
+    /*
+     * Set whenever an expected ChangeCipherSpec message is processed.
+     * Unset when the peer's Finished message is received.
+     * Unexpected ChangeCipherSpec messages trigger a fatal alert.
+     */
+    int change_cipher_spec;
+    int warn_alert;
+    int fatal_alert;
+    /*
+     * we allow one fatal and one warning alert to be outstanding, send close
+     * alert via the warning alert
+     */
+    int alert_dispatch;
+    unsigned char send_alert[2];
+    /*
+     * This flag is set when we should renegotiate ASAP, basically when there
+     * is no more data in the read or write buffers
+     */
+    int renegotiate;
+    int total_renegotiations;
+    int num_renegotiations;
+    int in_read_app_data;
+    struct {
+        /* actually only 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;
+        /* used to hold the new cipher we are going to use */
+        const SSL_CIPHER *new_cipher;
+#  ifndef OPENSSL_NO_DH
+        DH *dh;
+#  endif
+#  ifndef OPENSSL_NO_ECDH
+        EC_KEY *ecdh;           /* holds short lived ECDH key */
+#  endif
+        /* used when SSL_ST_FLUSH_DATA is entered */
+        int next_state;
+        int reuse_message;
+        /* used for certificate requests */
+        int cert_req;
+        int ctype_num;
+        char ctype[SSL3_CT_NUMBER];
+        STACK_OF(X509_NAME) *ca_names;
+        int use_rsa_tmp;
+        int key_block_length;
+        unsigned char *key_block;
+        const EVP_CIPHER *new_sym_enc;
+        const EVP_MD *new_hash;
+        int new_mac_pkey_type;
+        int new_mac_secret_size;
+#  ifndef OPENSSL_NO_COMP
+        const SSL_COMP *new_compression;
+#  else
+        char *new_compression;
+#  endif
+        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 */
+
+#  ifndef OPENSSL_NO_NEXTPROTONEG
+    /*
+     * Set if we saw the Next Protocol Negotiation extension from our peer.
+     */
+    int next_proto_neg_seen;
+#  endif
+
+#  ifndef OPENSSL_NO_TLSEXT
+
+    /*
+     * ALPN information (we are in the process of transitioning from NPN to
+     * ALPN.)
+     */
+
+    /*
+     * In a server these point to the selected ALPN protocol after the
+     * ClientHello has been processed. In a client these contain the protocol
+     * that the server selected once the ServerHello has been processed.
+     */
+    unsigned char *alpn_selected;
+    unsigned alpn_selected_len;
+
+#   ifndef OPENSSL_NO_EC
+    /*
+     * This is set to true if we believe that this is a version of Safari
+     * running on OS X 10.6 or newer. We wish to know this because Safari on
+     * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
+     */
+    char is_probably_safari;
+#   endif                       /* !OPENSSL_NO_EC */
+
+#  endif                        /* !OPENSSL_NO_TLSEXT */
+} SSL3_STATE;
+
+
+/* DTLS structures */
+
+#  ifndef OPENSSL_NO_SCTP
+#   define DTLS1_SCTP_AUTH_LABEL   "EXPORTER_DTLS_OVER_SCTP"
+#  endif
+
+/* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
+#  define DTLS1_MAX_MTU_OVERHEAD                   48
+
+typedef struct dtls1_bitmap_st {
+    unsigned long map;          /* track 32 packets on 32-bit systems and 64
+                                 * - on 64-bit systems */
+    unsigned char max_seq_num[8]; /* max record number seen so far, 64-bit
+                                   * value in big-endian encoding */
+} DTLS1_BITMAP;
+
+struct dtls1_retransmit_state {
+    EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
+    EVP_MD_CTX *write_hash;     /* used for mac generation */
+#  ifndef OPENSSL_NO_COMP
+    COMP_CTX *compress;         /* compression */
+#  else
+    char *compress;
+#  endif
+    SSL_SESSION *session;
+    unsigned short epoch;
+};
+
+struct hm_header_st {
+    unsigned char type;
+    unsigned long msg_len;
+    unsigned short seq;
+    unsigned long frag_off;
+    unsigned long frag_len;
+    unsigned int is_ccs;
+    struct dtls1_retransmit_state saved_retransmit_state;
+};
+
+struct ccs_header_st {
+    unsigned char type;
+    unsigned short seq;
+};
+
+struct dtls1_timeout_st {
+    /* Number of read timeouts so far */
+    unsigned int read_timeouts;
+    /* Number of write timeouts so far */
+    unsigned int write_timeouts;
+    /* Number of alerts received so far */
+    unsigned int num_alerts;
+};
+
+typedef struct record_pqueue_st {
+    unsigned short epoch;
+    pqueue q;
+} record_pqueue;
+
+typedef struct hm_fragment_st {
+    struct hm_header_st msg_header;
+    unsigned char *fragment;
+    unsigned char *reassembly;
+} hm_fragment;
+
+typedef struct dtls1_state_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 */
+    pqueue buffered_messages;
+    /* Buffered (sent) handshake records */
+    pqueue sent_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 link_mtu;      /* max on-the-wire DTLS packet size */
+    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;
+    /*
+     * Indicates when the last handshake msg or heartbeat sent will timeout
+     */
+    struct timeval next_timeout;
+    /* Timeout duration */
+    unsigned short timeout_duration;
+    /*
+     * 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;
+    /*
+     * Set when the handshake is ready to process peer's ChangeCipherSpec message.
+     * Cleared after the message has been processed.
+     */
+    unsigned int change_cipher_spec_ok;
+#  ifndef OPENSSL_NO_SCTP
+    /* used when SSL_ST_XX_FLUSH is entered */
+    int next_state;
+    int shutdown_received;
+#  endif
+} DTLS1_STATE;
+
+typedef struct dtls1_record_data_st {
+    unsigned char *packet;
+    unsigned int packet_length;
+    SSL3_BUFFER rbuf;
+    SSL3_RECORD rrec;
+#  ifndef OPENSSL_NO_SCTP
+    struct bio_dgram_sctp_rcvinfo recordinfo;
+#  endif
+} DTLS1_RECORD_DATA;
+
+
 # ifndef OPENSSL_NO_EC
 /*
  * From ECC-TLS draft, used in encoding the curve type in ECParameters
diff --git a/ssl/ssl_task.c b/ssl/ssl_task.c
index dad20c6..ab37cc6 100644
--- a/ssl/ssl_task.c
+++ b/ssl/ssl_task.c
@@ -128,8 +128,8 @@ int LIB$INIT_TIMER(), LIB$SHOW_TIMER();
 
 #include <openssl/buffer.h>
 #include <openssl/x509.h>
-#include <openssl/ssl.h>
 #include <openssl/err.h>
+#include "ssl_locl.h"
 
 int verify_callback(int ok, X509 *xs, X509 *xi, int depth,
 		    int error);
diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index fb78aea..7bf7e55 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -188,6 +188,8 @@
 #endif
 #include <openssl/bn.h>
 
+#include "../ssl/ssl_locl.h"
+
 /*
  * Or gethostname won't be declared properly
  * on Compaq platforms (at least with DEC C).
diff --git a/util/mkdef.pl b/util/mkdef.pl
index faed402..03fbf20 100755
--- a/util/mkdef.pl
+++ b/util/mkdef.pl
@@ -111,8 +111,6 @@ my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
 			 "NEXTPROTONEG",
 			 # Deprecated functions
 			 "DEPRECATED",
-			 # Hide SSL internals
-			 "SSL_INTERN",
 			 # SCTP
 		 	 "SCTP",
 			 # SRTP


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