path: root/include/openssl/bio.h.in

/*
 * {- join("\n * ", @autowarntext) -}
 *
 * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */
{-
use OpenSSL::stackhash qw(generate_stack_macros);
-}

#ifndef OPENSSL_BIO_H
# define OPENSSL_BIO_H
# pragma once

# include <openssl/macros.h>
# ifndef OPENSSL_NO_DEPRECATED_3_0
#  define HEADER_BIO_H
# endif

# include <openssl/e_os2.h>

# ifndef OPENSSL_NO_STDIO
#  include <stdio.h>
# endif
# include <stdarg.h>

# include <openssl/crypto.h>
# include <openssl/bioerr.h>
# include <openssl/core.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* There are the classes of BIOs */
# define BIO_TYPE_DESCRIPTOR     0x0100 /* socket, fd, connect or accept */
# define BIO_TYPE_FILTER         0x0200
# define BIO_TYPE_SOURCE_SINK    0x0400

/* These are the 'types' of BIOs */
# define BIO_TYPE_NONE             0
# define BIO_TYPE_MEM            ( 1|BIO_TYPE_SOURCE_SINK)
# define BIO_TYPE_FILE           ( 2|BIO_TYPE_SOURCE_SINK)

# define BIO_TYPE_FD             ( 4|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
# define BIO_TYPE_SOCKET         ( 5|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
# define BIO_TYPE_NULL           ( 6|BIO_TYPE_SOURCE_SINK)
# define BIO_TYPE_SSL            ( 7|BIO_TYPE_FILTER)
# define BIO_TYPE_MD             ( 8|BIO_TYPE_FILTER)
# define BIO_TYPE_BUFFER         ( 9|BIO_TYPE_FILTER)
# define BIO_TYPE_CIPHER         (10|BIO_TYPE_FILTER)
# define BIO_TYPE_BASE64         (11|BIO_TYPE_FILTER)
# define BIO_TYPE_CONNECT        (12|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
# define BIO_TYPE_ACCEPT         (13|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)

# define BIO_TYPE_NBIO_TEST      (16|BIO_TYPE_FILTER)/* server proxy BIO */
# define BIO_TYPE_NULL_FILTER    (17|BIO_TYPE_FILTER)
# define BIO_TYPE_BIO            (19|BIO_TYPE_SOURCE_SINK)/* half a BIO pair */
# define BIO_TYPE_LINEBUFFER     (20|BIO_TYPE_FILTER)
# define BIO_TYPE_DGRAM          (21|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
# define BIO_TYPE_ASN1           (22|BIO_TYPE_FILTER)
# define BIO_TYPE_COMP           (23|BIO_TYPE_FILTER)
# ifndef OPENSSL_NO_SCTP
#  define BIO_TYPE_DGRAM_SCTP    (24|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
# endif
# define BIO_TYPE_CORE_TO_PROV   (25|BIO_TYPE_SOURCE_SINK)
# define BIO_TYPE_DGRAM_PAIR     (26|BIO_TYPE_SOURCE_SINK)
# define BIO_TYPE_DGRAM_MEM      (27|BIO_TYPE_SOURCE_SINK)

/* Custom type starting index returned by BIO_get_new_index() */
#define BIO_TYPE_START           128
/* Custom type maximum index that can be returned by BIO_get_new_index() */
#define BIO_TYPE_MASK            0xFF

/*
 * BIO_FILENAME_READ|BIO_CLOSE to open or close on free.
 * BIO_set_fp(in,stdin,BIO_NOCLOSE);
 */
# define BIO_NOCLOSE             0x00
# define BIO_CLOSE               0x01

/*
 * These are used in the following macros and are passed to BIO_ctrl()
 */
# define BIO_CTRL_RESET          1/* opt - rewind/zero etc */
# define BIO_CTRL_EOF            2/* opt - are we at the eof */
# define BIO_CTRL_INFO           3/* opt - extra tit-bits */
# define BIO_CTRL_SET            4/* man - set the 'IO' type */
# define BIO_CTRL_GET            5/* man - get the 'IO' type */
# define BIO_CTRL_PUSH           6/* opt - internal, used to signify change */
# define BIO_CTRL_POP            7/* opt - internal, used to signify change */
# define BIO_CTRL_GET_CLOSE      8/* man - set the 'close' on free */
# define BIO_CTRL_SET_CLOSE      9/* man - set the 'close' on free */
# define BIO_CTRL_PENDING        10/* opt - is their more data buffered */
# define BIO_CTRL_FLUSH          11/* opt - 'flush' buffered output */
# define BIO_CTRL_DUP            12/* man - extra stuff for 'duped' BIO */
# define BIO_CTRL_WPENDING       13/* opt - number of bytes still to write */
# define BIO_CTRL_SET_CALLBACK   14/* opt - set callback function */
# define BIO_CTRL_GET_CALLBACK   15/* opt - set callback function */

# define BIO_CTRL_PEEK           29/* BIO_f_buffer special */
# define BIO_CTRL_SET_FILENAME   30/* BIO_s_file special */

/* dgram BIO stuff */
# define BIO_CTRL_DGRAM_CONNECT       31/* BIO dgram special */
# define BIO_CTRL_DGRAM_SET_CONNECTED 32/* allow for an externally connected
                                         * socket to be passed in */
# define BIO_CTRL_DGRAM_SET_RECV_TIMEOUT 33/* setsockopt, essentially */
# define BIO_CTRL_DGRAM_GET_RECV_TIMEOUT 34/* getsockopt, essentially */
# define BIO_CTRL_DGRAM_SET_SEND_TIMEOUT 35/* setsockopt, essentially */
# define BIO_CTRL_DGRAM_GET_SEND_TIMEOUT 36/* getsockopt, essentially */

# define BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP 37/* flag whether the last */
# define BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP 38/* I/O operation timed out */

/* #ifdef IP_MTU_DISCOVER */
# define BIO_CTRL_DGRAM_MTU_DISCOVER       39/* set DF bit on egress packets */
/* #endif */

# define BIO_CTRL_DGRAM_QUERY_MTU          40/* as kernel for current MTU */
# define BIO_CTRL_DGRAM_GET_FALLBACK_MTU   47
# define BIO_CTRL_DGRAM_GET_MTU            41/* get cached value for MTU */
# define BIO_CTRL_DGRAM_SET_MTU            42/* set cached value for MTU.
                                              * want to use this if asking
                                              * the kernel fails */

# define BIO_CTRL_DGRAM_MTU_EXCEEDED       43/* check whether the MTU was
                                              * exceed in the previous write
                                              * operation */

# define BIO_CTRL_DGRAM_GET_PEER           46
# define BIO_CTRL_DGRAM_SET_PEER           44/* Destination for the data */

# define BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT   45/* Next DTLS handshake timeout
                                              * to adjust socket timeouts */
# define BIO_CTRL_DGRAM_SET_DONT_FRAG      48

# define BIO_CTRL_DGRAM_GET_MTU_OVERHEAD   49

/* Deliberately outside of OPENSSL_NO_SCTP - used in bss_dgram.c */
#  define BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE    50
# ifndef OPENSSL_NO_SCTP
/* SCTP stuff */
#  define BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY                51
#  define BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY               52
#  define BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD               53
#  define BIO_CTRL_DGRAM_SCTP_GET_SNDINFO         60
#  define BIO_CTRL_DGRAM_SCTP_SET_SNDINFO         61
#  define BIO_CTRL_DGRAM_SCTP_GET_RCVINFO         62
#  define BIO_CTRL_DGRAM_SCTP_SET_RCVINFO         63
#  define BIO_CTRL_DGRAM_SCTP_GET_PRINFO                  64
#  define BIO_CTRL_DGRAM_SCTP_SET_PRINFO                  65
#  define BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN               70
# endif

# define BIO_CTRL_DGRAM_SET_PEEK_MODE      71

/*
 * internal BIO:
 * # define BIO_CTRL_SET_KTLS_SEND                 72
 * # define BIO_CTRL_SET_KTLS_SEND_CTRL_MSG        74
 * # define BIO_CTRL_CLEAR_KTLS_CTRL_MSG           75
 */

# define BIO_CTRL_GET_KTLS_SEND                 73
# define BIO_CTRL_GET_KTLS_RECV                 76

# define BIO_CTRL_DGRAM_SCTP_WAIT_FOR_DRY       77
# define BIO_CTRL_DGRAM_SCTP_MSG_WAITING        78

/* BIO_f_prefix controls */
# define BIO_CTRL_SET_PREFIX                    79
# define BIO_CTRL_SET_INDENT                    80
# define BIO_CTRL_GET_INDENT                    81

# define BIO_CTRL_DGRAM_GET_LOCAL_ADDR_CAP      82
# define BIO_CTRL_DGRAM_GET_LOCAL_ADDR_ENABLE   83
# define BIO_CTRL_DGRAM_SET_LOCAL_ADDR_ENABLE   84
# define BIO_CTRL_DGRAM_GET_EFFECTIVE_CAPS      85
# define BIO_CTRL_DGRAM_GET_CAPS                86
# define BIO_CTRL_DGRAM_SET_CAPS                87
# define BIO_CTRL_DGRAM_GET_NO_TRUNC            88
# define BIO_CTRL_DGRAM_SET_NO_TRUNC            89

/*
 * internal BIO:
 * # define BIO_CTRL_SET_KTLS_TX_ZEROCOPY_SENDFILE 90
 */

# define BIO_CTRL_GET_RPOLL_DESCRIPTOR          91
# define BIO_CTRL_GET_WPOLL_DESCRIPTOR          92
# define BIO_CTRL_DGRAM_DETECT_PEER_ADDR        93

# define BIO_DGRAM_CAP_NONE                 0U
# define BIO_DGRAM_CAP_HANDLES_SRC_ADDR     (1U << 0)
# define BIO_DGRAM_CAP_HANDLES_DST_ADDR     (1U << 1)
# define BIO_DGRAM_CAP_PROVIDES_SRC_ADDR    (1U << 2)
# define BIO_DGRAM_CAP_PROVIDES_DST_ADDR    (1U << 3)

# ifndef OPENSSL_NO_KTLS
#  define BIO_get_ktls_send(b)         \
     (BIO_ctrl(b, BIO_CTRL_GET_KTLS_SEND, 0, NULL) > 0)
#  define BIO_get_ktls_recv(b)         \
     (BIO_ctrl(b, BIO_CTRL_GET_KTLS_RECV, 0, NULL) > 0)
# else
#  define BIO_get_ktls_send(b)  (0)
#  define BIO_get_ktls_recv(b)  (0)
# endif

/* modifiers */
# define BIO_FP_READ             0x02
# define BIO_FP_WRITE            0x04
# define BIO_FP_APPEND           0x08
# define BIO_FP_TEXT             0x10

# define BIO_FLAGS_READ          0x01
# define BIO_FLAGS_WRITE         0x02
# define BIO_FLAGS_IO_SPECIAL    0x04
# define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL)
# define BIO_FLAGS_SHOULD_RETRY  0x08
# ifndef OPENSSL_NO_DEPRECATED_3_0
/* This #define was replaced by an internal constant and should not be used. */
#  define BIO_FLAGS_UPLINK       0
# endif

# define BIO_FLAGS_BASE64_NO_NL  0x100

/*
 * This is used with memory BIOs:
 * BIO_FLAGS_MEM_RDONLY means we shouldn't free up or change the data in any way;
 * BIO_FLAGS_NONCLEAR_RST means we shouldn't clear data on reset.
 */
# define BIO_FLAGS_MEM_RDONLY    0x200
# define BIO_FLAGS_NONCLEAR_RST  0x400
# define BIO_FLAGS_IN_EOF        0x800

/* the BIO FLAGS values 0x1000 to 0x8000 are reserved for internal KTLS flags */

typedef union bio_addr_st BIO_ADDR;
typedef struct bio_addrinfo_st BIO_ADDRINFO;

int BIO_get_new_index(void);
void BIO_set_flags(BIO *b, int flags);
int BIO_test_flags(const BIO *b, int flags);
void BIO_clear_flags(BIO *b, int flags);

# define BIO_get_flags(b) BIO_test_flags(b, ~(0x0))
# define BIO_set_retry_special(b) \
                BIO_set_flags(b, (BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
# define BIO_set_retry_read(b) \
                BIO_set_flags(b, (BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
# define BIO_set_retry_write(b) \
                BIO_set_flags(b, (BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))

/* These are normally used internally in BIOs */
# define BIO_clear_retry_flags(b) \
                BIO_clear_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
# define BIO_get_retry_flags(b) \
                BIO_test_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))

/* These should be used by the application to tell why we should retry */
# define BIO_should_read(a)              BIO_test_flags(a, BIO_FLAGS_READ)
# define BIO_should_write(a)             BIO_test_flags(a, BIO_FLAGS_WRITE)
# define BIO_should_io_special(a)        BIO_test_flags(a, BIO_FLAGS_IO_SPECIAL)
# define BIO_retry_type(a)               BIO_test_flags(a, BIO_FLAGS_RWS)
# define BIO_should_retry(a)             BIO_test_flags(a, BIO_FLAGS_SHOULD_RETRY)

/*
 * The next three are used in conjunction with the BIO_should_io_special()
 * condition.  After this returns true, BIO *BIO_get_retry_BIO(BIO *bio, int
 * *reason); will walk the BIO stack and return the 'reason' for the special
 * and the offending BIO. Given a BIO, BIO_get_retry_reason(bio) will return
 * the code.
 */
/*
 * Returned from the SSL bio when the certificate retrieval code had an error
 */
# define BIO_RR_SSL_X509_LOOKUP          0x01
/* Returned from the connect BIO when a connect would have blocked */
# define BIO_RR_CONNECT                  0x02
/* Returned from the accept BIO when an accept would have blocked */
# define BIO_RR_ACCEPT                   0x03

/* These are passed by the BIO callback */
# define BIO_CB_FREE        0x01
# define BIO_CB_READ        0x02
# define BIO_CB_WRITE       0x03
# define BIO_CB_PUTS        0x04
# define BIO_CB_GETS        0x05
# define BIO_CB_CTRL        0x06
# define BIO_CB_RECVMMSG    0x07
# define BIO_CB_SENDMMSG    0x08

/*
 * The callback is called before and after the underling operation, The
 * BIO_CB_RETURN flag indicates if it is after the call
 */
# define BIO_CB_RETURN   0x80
# define BIO_CB_return(a) ((a)|BIO_CB_RETURN)
# define BIO_cb_pre(a)   (!((a)&BIO_CB_RETURN))
# define BIO_cb_post(a)  ((a)&BIO_CB_RETURN)

# ifndef OPENSSL_NO_DEPRECATED_3_0
typedef long (*BIO_callback_fn)(BIO *b, int oper, const char *argp, int argi,
                                long argl, long ret);
OSSL_DEPRECATEDIN_3_0 BIO_callback_fn BIO_get_callback(const BIO *b);
OSSL_DEPRECATEDIN_3_0 void BIO_set_callback(BIO *b, BIO_callback_fn callback);
OSSL_DEPRECATEDIN_3_0 long BIO_debug_callback(BIO *bio, int cmd,
                                               const char *argp, int argi,
                                               long argl, long ret);
# endif

typedef long (*BIO_callback_fn_ex)(BIO *b, int oper, const char *argp,
                                   size_t len, int argi,
                                   long argl, int ret, size_t *processed);
BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b);
void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex callback);
long BIO_debug_callback_ex(BIO *bio, int oper, const char *argp, size_t len,
                           int argi, long argl, int ret, size_t *processed);

char *BIO_get_callback_arg(const BIO *b);
void BIO_set_callback_arg(BIO *b, char *arg);

typedef struct bio_method_st BIO_METHOD;

const char *BIO_method_name(const BIO *b);
int BIO_method_type(const BIO *b);

typedef int BIO_info_cb(BIO *, int, int);
typedef BIO_info_cb bio_info_cb;  /* backward compatibility */

{-
    generate_stack_macros("BIO");
-}


/* Prefix and suffix callback in ASN1 BIO */
typedef int asn1_ps_func (BIO *b, unsigned char **pbuf, int *plen,
                          void *parg);

typedef void (*BIO_dgram_sctp_notification_handler_fn) (BIO *b,
                                                        void *context,
                                                        void *buf);
# ifndef OPENSSL_NO_SCTP
/* SCTP parameter structs */
struct bio_dgram_sctp_sndinfo {
    uint16_t snd_sid;
    uint16_t snd_flags;
    uint32_t snd_ppid;
    uint32_t snd_context;
};

struct bio_dgram_sctp_rcvinfo {
    uint16_t rcv_sid;
    uint16_t rcv_ssn;
    uint16_t rcv_flags;
    uint32_t rcv_ppid;
    uint32_t rcv_tsn;
    uint32_t rcv_cumtsn;
    uint32_t rcv_context;
};

struct bio_dgram_sctp_prinfo {
    uint16_t pr_policy;
    uint32_t pr_value;
};
# endif

/* BIO_sendmmsg/BIO_recvmmsg-related definitions */
typedef struct bio_msg_st {
    void *data;
    size_t data_len;
    BIO_ADDR *peer, *local;
    uint64_t flags;
} BIO_MSG;

typedef struct bio_mmsg_cb_args_st {
    BIO_MSG    *msg;
    size_t      stride, num_msg;
    uint64_t    flags;
    size_t     *msgs_processed;
} BIO_MMSG_CB_ARGS;

#define BIO_POLL_DESCRIPTOR_TYPE_NONE       0
#define BIO_POLL_DESCRIPTOR_TYPE_SOCK_FD    1
#define BIO_POLL_DESCRIPTOR_TYPE_SSL        2
#define BIO_POLL_DESCRIPTOR_CUSTOM_START    8192

typedef struct bio_poll_descriptor_st {
    uint32_t type;
    union {
        int         fd;
        void        *custom;
        uintptr_t   custom_ui;
        SSL         *ssl;
    } value;
} BIO_POLL_DESCRIPTOR;

/*
 * #define BIO_CONN_get_param_hostname BIO_ctrl
 */

# define BIO_C_SET_CONNECT                       100
# define BIO_C_DO_STATE_MACHINE                  101
# define BIO_C_SET_NBIO                          102
/* # define BIO_C_SET_PROXY_PARAM                   103 */
# define BIO_C_SET_FD                            104
# define BIO_C_GET_FD                            105
# define BIO_C_SET_FILE_PTR                      106
# define BIO_C_GET_FILE_PTR                      107
# define BIO_C_SET_FILENAME                      108
# define BIO_C_SET_SSL                           109
# define BIO_C_GET_SSL                           110
# define BIO_C_SET_MD                            111
# define BIO_C_GET_MD                            112
# define BIO_C_GET_CIPHER_STATUS                 113
# define BIO_C_SET_BUF_MEM                       114
# define BIO_C_GET_BUF_MEM_PTR                   115
# define BIO_C_GET_BUFF_NUM_LINES                116
# define BIO_C_SET_BUFF_SIZE                     117
# define BIO_C_SET_ACCEPT                        118
# define BIO_C_SSL_MODE                          119
# define BIO_C_GET_MD_CTX                        120
/* # define BIO_C_GET_PROXY_PARAM                   121 */
# define BIO_C_SET_BUFF_READ_DATA                122/* data to read first */
# define BIO_C_GET_CONNECT                       123
# define BIO_C_GET_ACCEPT                        124
# define BIO_C_SET_SSL_RENEGOTIATE_BYTES         125
# define BIO_C_GET_SSL_NUM_RENEGOTIATES          126
# define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT       127
# define BIO_C_FILE_SEEK                         128
# define BIO_C_GET_CIPHER_CTX                    129
# define BIO_C_SET_BUF_MEM_EOF_RETURN            130/* return end of input
                                                     * value */
# define BIO_C_SET_BIND_MODE                     131
# define BIO_C_GET_BIND_MODE                     132
# define BIO_C_FILE_TELL                         133
# define BIO_C_GET_SOCKS                         134
# define BIO_C_SET_SOCKS                         135

# define BIO_C_SET_WRITE_BUF_SIZE                136/* for BIO_s_bio */
# define BIO_C_GET_WRITE_BUF_SIZE                137
# define BIO_C_MAKE_BIO_PAIR                     138
# define BIO_C_DESTROY_BIO_PAIR                  139
# define BIO_C_GET_WRITE_GUARANTEE               140
# define BIO_C_GET_READ_REQUEST                  141
# define BIO_C_SHUTDOWN_WR                       142
# define BIO_C_NREAD0                            143
# define BIO_C_NREAD                             144
# define BIO_C_NWRITE0                           145
# define BIO_C_NWRITE                            146
# define BIO_C_RESET_READ_REQUEST                147
# define BIO_C_SET_MD_CTX                        148

# define BIO_C_SET_PREFIX                        149
# define BIO_C_GET_PREFIX                        150
# define BIO_C_SET_SUFFIX                        151
# define BIO_C_GET_SUFFIX                        152

# define BIO_C_SET_EX_ARG                        153
# define BIO_C_GET_EX_ARG                        154

# define BIO_C_SET_CONNECT_MODE                  155

# define BIO_C_SET_TFO                           156 /* like BIO_C_SET_NBIO */

# define BIO_C_SET_SOCK_TYPE                     157
# define BIO_C_GET_SOCK_TYPE                     158
# define BIO_C_GET_DGRAM_BIO                     159

# define BIO_set_app_data(s,arg)         BIO_set_ex_data(s,0,arg)
# define BIO_get_app_data(s)             BIO_get_ex_data(s,0)

# define BIO_set_nbio(b,n)               BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
# define BIO_set_tfo(b,n)                BIO_ctrl(b,BIO_C_SET_TFO,(n),NULL)

# ifndef OPENSSL_NO_SOCK
/* IP families we support, for BIO_s_connect() and BIO_s_accept() */
/* Note: the underlying operating system may not support some of them */
#  define BIO_FAMILY_IPV4                         4
#  define BIO_FAMILY_IPV6                         6
#  define BIO_FAMILY_IPANY                        256

/* BIO_s_connect() */
#  define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0, \
                                                 (char *)(name))
#  define BIO_set_conn_port(b,port)     BIO_ctrl(b,BIO_C_SET_CONNECT,1, \
                                                 (char *)(port))
#  define BIO_set_conn_address(b,addr)  BIO_ctrl(b,BIO_C_SET_CONNECT,2, \
                                                 (char *)(addr))
#  define BIO_set_conn_ip_family(b,f)   BIO_int_ctrl(b,BIO_C_SET_CONNECT,3,f)
#  define BIO_get_conn_hostname(b)      ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0))
#  define BIO_get_conn_port(b)          ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1))
#  define BIO_get_conn_address(b)       ((const BIO_ADDR *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2))
#  define BIO_get_conn_ip_family(b)     BIO_ctrl(b,BIO_C_GET_CONNECT,3,NULL)
#  define BIO_get_conn_mode(b)          BIO_ctrl(b,BIO_C_GET_CONNECT,4,NULL)
#  define BIO_set_conn_mode(b,n)        BIO_ctrl(b,BIO_C_SET_CONNECT_MODE,(n),NULL)
#  define BIO_set_sock_type(b,t)        BIO_ctrl(b,BIO_C_SET_SOCK_TYPE,(t),NULL)
#  define BIO_get_sock_type(b)          BIO_ctrl(b,BIO_C_GET_SOCK_TYPE,0,NULL)
#  define BIO_get0_dgram_bio(b, p)      BIO_ctrl(b,BIO_C_GET_DGRAM_BIO,0,(void *)(BIO **)(p))

/* BIO_s_accept() */
#  define BIO_set_accept_name(b,name)   BIO_ctrl(b,BIO_C_SET_ACCEPT,0, \
                                                 (char *)(name))
#  define BIO_set_accept_port(b,port)   BIO_ctrl(b,BIO_C_SET_ACCEPT,1, \
                                                 (char *)(port))
#  define BIO_get_accept_name(b)        ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0))
#  define BIO_get_accept_port(b)        ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,1))
#  define BIO_get_peer_name(b)          ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,2))
#  define BIO_get_peer_port(b)          ((co