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openssl/crypto/bio/bio.h

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/* crypto/bio/bio.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#ifndef HEADER_BIO_H
#define HEADER_BIO_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <stdlib.h>
#include <openssl/crypto.h>
/* These are the 'types' of BIOs */
#define BIO_TYPE_NONE 0
#define BIO_TYPE_MEM (1|0x0400)
#define BIO_TYPE_FILE (2|0x0400)
#define BIO_TYPE_FD (4|0x0400|0x0100)
#define BIO_TYPE_SOCKET (5|0x0400|0x0100)
#define BIO_TYPE_NULL (6|0x0400)
#define BIO_TYPE_SSL (7|0x0200)
#define BIO_TYPE_MD (8|0x0200) /* passive filter */
#define BIO_TYPE_BUFFER (9|0x0200) /* filter */
#define BIO_TYPE_CIPHER (10|0x0200) /* filter */
#define BIO_TYPE_BASE64 (11|0x0200) /* filter */
#define BIO_TYPE_CONNECT (12|0x0400|0x0100) /* socket - connect */
#define BIO_TYPE_ACCEPT (13|0x0400|0x0100) /* socket for accept */
#define BIO_TYPE_PROXY_CLIENT (14|0x0200) /* client proxy BIO */
#define BIO_TYPE_PROXY_SERVER (15|0x0200) /* server proxy BIO */
#define BIO_TYPE_NBIO_TEST (16|0x0200) /* server proxy BIO */
#define BIO_TYPE_NULL_FILTER (17|0x0200)
#define BIO_TYPE_BER (18|0x0200) /* BER -> bin filter */
#define BIO_TYPE_BIO (19|0x0400) /* (half a) BIO pair */
#define BIO_TYPE_DESCRIPTOR 0x0100 /* socket, fd, connect or accept */
#define BIO_TYPE_FILTER 0x0200
#define BIO_TYPE_SOURCE_SINK 0x0400
/* 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 */
/* callback is int cb(BIO *bio,state,ret); */
#define BIO_CTRL_SET_CALLBACK 14 /* opt - set callback function */
#define BIO_CTRL_GET_CALLBACK 15 /* opt - set callback function */
#define BIO_CTRL_SET_FILENAME 30 /* BIO_s_file special */
/* 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
/* Used in BIO_gethostbyname() */
#define BIO_GHBN_CTRL_HITS 1
#define BIO_GHBN_CTRL_MISSES 2
#define BIO_GHBN_CTRL_CACHE_SIZE 3
#define BIO_GHBN_CTRL_GET_ENTRY 4
#define BIO_GHBN_CTRL_FLUSH 5
/* Mostly used in the SSL BIO */
/* Not used anymore
* #define BIO_FLAGS_PROTOCOL_DELAYED_READ 0x10
* #define BIO_FLAGS_PROTOCOL_DELAYED_WRITE 0x20
* #define BIO_FLAGS_PROTOCOL_STARTUP 0x40
*/
#define BIO_FLAGS_BASE64_NO_NL 0x100
/* This is used with memory BIOs: it means we shouldn't free up or change the
* data in any way.
*/
#define BIO_FLAGS_MEM_RDONLY 0x200
#define BIO_set_flags(b,f) ((b)->flags|=(f))
#define BIO_get_flags(b) ((b)->flags)
#define BIO_set_retry_special(b) \
((b)->flags|=(BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
#define BIO_set_retry_read(b) \
((b)->flags|=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
#define BIO_set_retry_write(b) \
((b)->flags|=(BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))
/* These are normally used internally in BIOs */
#define BIO_clear_flags(b,f) ((b)->flags&= ~(f))
#define BIO_clear_retry_flags(b) \
((b)->flags&= ~(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
#define BIO_get_retry_flags(b) \
((b)->flags&(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) ((a)->flags & BIO_FLAGS_READ)
#define BIO_should_write(a) ((a)->flags & BIO_FLAGS_WRITE)
#define BIO_should_io_special(a) ((a)->flags & BIO_FLAGS_IO_SPECIAL)
#define BIO_retry_type(a) ((a)->flags & BIO_FLAGS_RWS)
#define BIO_should_retry(a) ((a)->flags & BIO_FLAGS_SHOULD_RETRY)
/* The next two 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
/* 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
/* 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)
#define BIO_set_callback(b,cb) ((b)->callback=(cb))
#define BIO_set_callback_arg(b,arg) ((b)->cb_arg=(char *)(arg))
#define BIO_get_callback_arg(b) ((b)->cb_arg)
#define BIO_get_callback(b) ((b)->callback)
#define BIO_method_name(b) ((b)->method->name)
#define BIO_method_type(b) ((b)->method->type)
#ifndef WIN16
typedef struct bio_method_st
{
int type;
const char *name;
int (*bwrite)();
int (*bread)();
int (*bputs)();
int (*bgets)();
long (*ctrl)();
int (*create)();
int (*destroy)();
long (*callback_ctrl)();
} BIO_METHOD;
#else
typedef struct bio_method_st
{
int type;
const char *name;
int (_far *bwrite)();
int (_far *bread)();
int (_far *bputs)();
int (_far *bgets)();
long (_far *ctrl)();
int (_far *create)();
int (_far *destroy)();
long (_fat *callback_ctrl)();
} BIO_METHOD;
#endif
typedef struct bio_st
{
BIO_METHOD *method;
/* bio, mode, argp, argi, argl, ret */
long (*callback)(struct bio_st *,int,const char *,int, long,long);
char *cb_arg; /* first argument for the callback */
int init;
int shutdown;
int flags; /* extra storage */
int retry_reason;
int num;
void *ptr;
struct bio_st *next_bio; /* used by filter BIOs */
struct bio_st *prev_bio; /* used by filter BIOs */
int references;
unsigned long num_read;
unsigned long num_write;
CRYPTO_EX_DATA ex_data;
} BIO;
typedef struct bio_f_buffer_ctx_struct
{
/* BIO *bio; */ /* this is now in the BIO struct */
int ibuf_size; /* how big is the input buffer */
int obuf_size; /* how big is the output buffer */
char *ibuf; /* the char array */
int ibuf_len; /* how many bytes are in it */
int ibuf_off; /* write/read offset */
char *obuf; /* the char array */
int obuf_len; /* how many bytes are in it */
int obuf_off; /* write/read offset */
} BIO_F_BUFFER_CTX;
/* connect BIO stuff */
#define BIO_CONN_S_BEFORE 1
#define BIO_CONN_S_GET_IP 2
#define BIO_CONN_S_GET_PORT 3
#define BIO_CONN_S_CREATE_SOCKET 4
#define BIO_CONN_S_CONNECT 5
#define BIO_CONN_S_OK 6
#define BIO_CONN_S_BLOCKED_CONNECT 7
#define BIO_CONN_S_NBIO 8
/*#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_set_app_data(s,arg) BIO_set_ex_data(s,0,arg)
#define BIO_get_app_data(s) BIO_get_ex_data(s,0)
/* BIO_s_connect() and BIO_s_socks4a_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_ip(b,ip) BIO_ctrl(b,BIO_C_SET_CONNECT,2,(char *)ip)
#define BIO_set_conn_int_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,3,(char *)port)
#define BIO_get_conn_hostname(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0)
#define BIO_get_conn_port(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1)
#define BIO_get_conn_ip(b,ip) BIO_ptr_ctrl(b,BIO_C_SET_CONNECT,2)
#define BIO_get_conn_int_port(b,port) BIO_int_ctrl(b,BIO_C_SET_CONNECT,3,port)
#define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
/* BIO_s_accept_socket() */
#define BIO_set_accept_port(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0,(char *)name)
#define BIO_get_accept_port(b) BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0)
/* #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */
#define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,1,(n)?"a":NULL)
#define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(char *)bio)
#define BIO_BIND_NORMAL 0
#define BIO_BIND_REUSEADDR_IF_UNUSED 1
#define BIO_BIND_REUSEADDR 2
#define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL)
#define BIO_get_bind_mode(b,mode) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL)
#define BIO_do_connect(b) BIO_do_handshake(b)
#define BIO_do_accept(b) BIO_do_handshake(b)
#define BIO_do_handshake(b) BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL)
/* BIO_s_proxy_client() */
#define BIO_set_url(b,url) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,0,(char *)(url))
#define BIO_set_proxies(b,p) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,1,(char *)(p))
/* BIO_set_nbio(b,n) */
#define BIO_set_filter_bio(b,s) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,2,(char *)(s))
/* BIO *BIO_get_filter_bio(BIO *bio); */
#define BIO_set_proxy_cb(b,cb) BIO_callback_ctrl(b,BIO_C_SET_PROXY_PARAM,3,(void *(*cb)()))
#define BIO_set_proxy_header(b,sk) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,4,(char *)sk)
#define BIO_set_no_connect_return(b,bool) BIO_int_ctrl(b,BIO_C_SET_PROXY_PARAM,5,bool)
#define BIO_get_proxy_header(b,skp) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,0,(char *)skp)
#define BIO_get_proxies(b,pxy_p) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,1,(char *)(pxy_p))
#define BIO_get_url(b,url) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,2,(char *)(url))
#define BIO_get_no_connect_return(b) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,5,NULL)
#define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
#define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c)
#define BIO_set_fp(b,fp,c) BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)fp)
#define BIO_get_fp(b,fpp) BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)fpp)
#define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL)
#define BIO_tell(b) (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL)
/* name is cast to lose const, but might be better to route through a function
so we can do it safely */
#ifdef CONST_STRICT
/* If you are wondering why this isn't defined, its because CONST_STRICT is
* purely a compile-time kludge to allow const to be checked.
*/
int BIO_read_filename(BIO *b,const char *name);
#else
#define BIO_read_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
BIO_CLOSE|BIO_FP_READ,(char *)name)
#endif
#define BIO_write_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
BIO_CLOSE|BIO_FP_WRITE,name)
#define BIO_append_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
BIO_CLOSE|BIO_FP_APPEND,name)
#define BIO_rw_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
/* WARNING WARNING, this ups the reference count on the read bio of the
* SSL structure. This is because the ssl read BIO is now pointed to by
* the next_bio field in the bio. So when you free the BIO, make sure
* you are doing a BIO_free_all() to catch the underlying BIO. */
#define BIO_set_ssl(b,ssl,c) BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)ssl)
#define BIO_get_ssl(b,sslp) BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)sslp)
#define BIO_set_ssl_mode(b,client) BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL)
#define BIO_set_ssl_renegotiate_bytes(b,num) \
BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL);
#define BIO_get_num_renegotiates(b) \
BIO_ctrl(b,BIO_C_SET_SSL_NUM_RENEGOTIATES,0,NULL);
#define BIO_set_ssl_renegotiate_timeout(b,seconds) \
BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL);
/* defined in evp.h */
/* #define BIO_set_md(b,md) BIO_ctrl(b,BIO_C_SET_MD,1,(char *)md) */
#define BIO_get_mem_data(b,pp) BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)pp)
#define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)bm)
#define BIO_get_mem_ptr(b,pp) BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0,(char *)pp)
#define BIO_set_mem_eof_return(b,v) \
BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL)
/* For the BIO_f_buffer() type */
#define BIO_get_buffer_num_lines(b) BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL)
#define BIO_set_buffer_size(b,size) BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL)
#define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0)
#define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1)
#define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf)
/* Don't use the next one unless you know what you are doing :-) */
#define BIO_dup_state(b,ret) BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret))
#define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
#define BIO_eof(b) (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL)
#define BIO_set_close(b,c) (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL)
#define BIO_get_close(b) (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL)
#define BIO_pending(b) (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL)
#define BIO_wpending(b) (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL)
/* ...pending macros have inappropriate return type */
size_t BIO_ctrl_pending(BIO *b);
size_t BIO_ctrl_wpending(BIO *b);
#define BIO_flush(b) (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL)
#define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0,(void (**)())(cbp))
#define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,(void (*)())(cb))
/* For the BIO_f_buffer() type */
#define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL)
/* For BIO_s_bio() */
#define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
#define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
#define BIO_make_bio_pair(b1,b2) (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
#define BIO_destroy_bio_pair(b) (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
/* macros with inappropriate type -- but ...pending macros use int too: */
#define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
#define BIO_get_read_request(b) (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
size_t BIO_ctrl_get_write_guarantee(BIO *b);
size_t BIO_ctrl_get_read_request(BIO *b);
int BIO_ctrl_reset_read_request(BIO *b);
#ifdef NO_STDIO
#define NO_FP_API
#endif
/* These two aren't currently implemented */
/* int BIO_get_ex_num(BIO *bio); */
/* void BIO_set_ex_free_func(BIO *bio,int idx,void (*cb)()); */
int BIO_set_ex_data(BIO *bio,int idx,void *data);
void *BIO_get_ex_data(BIO *bio,int idx);
int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
unsigned long BIO_number_read(BIO *bio);
unsigned long BIO_number_written(BIO *bio);
# if defined(WIN16) && defined(_WINDLL)
BIO_METHOD *BIO_s_file_internal(void);
BIO *BIO_new_file_internal(char *filename, char *mode);
BIO *BIO_new_fp_internal(FILE *stream, int close_flag);
# define BIO_s_file BIO_s_file_internal
# define BIO_new_file BIO_new_file_internal
# define BIO_new_fp BIO_new_fp_internal
# else /* FP_API */
BIO_METHOD *BIO_s_file(void );
BIO *BIO_new_file(const char *filename, const char *mode);
BIO *BIO_new_fp(FILE *stream, int close_flag);
# define BIO_s_file_internal BIO_s_file
# define BIO_new_file_internal BIO_new_file
# define BIO_new_fp_internal BIO_s_file
# endif /* FP_API */
BIO * BIO_new(BIO_METHOD *type);
int BIO_set(BIO *a,BIO_METHOD *type);
int BIO_free(BIO *a);
int BIO_read(BIO *b, void *data, int len);
int BIO_gets(BIO *bp,char *buf, int size);
int BIO_write(BIO *b, const void *data, int len);
int BIO_puts(BIO *bp,const char *buf);
long BIO_ctrl(BIO *bp,int cmd,long larg,void *parg);
long BIO_callback_ctrl(BIO *bp,int cmd,void (*fp)());
char * BIO_ptr_ctrl(BIO *bp,int cmd,long larg);
long BIO_int_ctrl(BIO *bp,int cmd,long larg,int iarg);
BIO * BIO_push(BIO *b,BIO *append);
BIO * BIO_pop(BIO *b);
void BIO_free_all(BIO *a);
BIO * BIO_find_type(BIO *b,int bio_type);
BIO * BIO_get_retry_BIO(BIO *bio, int *reason);
int BIO_get_retry_reason(BIO *bio);
BIO * BIO_dup_chain(BIO *in);
int BIO_nread0(BIO *bio, char **buf);
int BIO_nread(BIO *bio, char **buf, int num);
int BIO_nwrite0(BIO *bio, char **buf);
int BIO_nwrite(BIO *bio, char **buf, int num);
#ifndef WIN16
long BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
long argl,long ret);
#else
long _far _loadds BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
long argl,long ret);
#endif
BIO_METHOD *BIO_s_mem(void);
BIO *BIO_new_mem_buf(void *buf, int len);
BIO_METHOD *BIO_s_socket(void);
BIO_METHOD *BIO_s_connect(void);
BIO_METHOD *BIO_s_accept(void);
BIO_METHOD *BIO_s_fd(void);
BIO_METHOD *BIO_s_log(void);
BIO_METHOD *BIO_s_bio(void);
BIO_METHOD *BIO_s_null(void);
BIO_METHOD *BIO_f_null(void);
BIO_METHOD *BIO_f_buffer(void);
BIO_METHOD *BIO_f_nbio_test(void);
/* BIO_METHOD *BIO_f_ber(void); */
int BIO_sock_should_retry(int i);
int BIO_sock_non_fatal_error(int error);
int BIO_fd_should_retry(int i);
int BIO_fd_non_fatal_error(int error);
int BIO_dump(BIO *b,const char *bytes,int len);
struct hostent *BIO_gethostbyname(const char *name);
/* We might want a thread-safe interface too:
* struct hostent *BIO_gethostbyname_r(const char *name,
* struct hostent *result, void *buffer, size_t buflen);
* or something similar (caller allocates a struct hostent,
* pointed to by "result", and additional buffer space for the various
* substructures; if the buffer does not suffice, NULL is returned
* and an appropriate error code is set).
*/
int BIO_sock_error(int sock);
int BIO_socket_ioctl(int fd, long type, unsigned long *arg);
int BIO_socket_nbio(int fd,int mode);
int BIO_get_port(const char *str, unsigned short *port_ptr);
int BIO_get_host_ip(const char *str, unsigned char *ip);
int BIO_get_accept_socket(char *host_port,int mode);
int BIO_accept(int sock,char **ip_port);
int BIO_sock_init(void );
void BIO_sock_cleanup(void);
int BIO_set_tcp_ndelay(int sock,int turn_on);
void ERR_load_BIO_strings(void );
BIO *BIO_new_socket(int sock, int close_flag);
BIO *BIO_new_fd(int fd, int close_flag);
BIO *BIO_new_connect(char *host_port);
BIO *BIO_new_accept(char *host_port);
int BIO_new_bio_pair(BIO **bio1, size_t writebuf1,
BIO **bio2, size_t writebuf2);
/* If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints.
* Otherwise returns 0 and sets *bio1 and *bio2 to NULL.
* Size 0 uses default value.
*/
void BIO_copy_next_retry(BIO *b);
long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);
int BIO_printf(BIO *bio, ...);
/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
* made after this point may be overwritten when the script is next run.
*/
/* Error codes for the BIO functions. */
/* Function codes. */
#define BIO_F_ACPT_STATE 100
#define BIO_F_BIO_ACCEPT 101
#define BIO_F_BIO_BER_GET_HEADER 102
#define BIO_F_BIO_CTRL 103
#define BIO_F_BIO_GETHOSTBYNAME 120
#define BIO_F_BIO_GETS 104
#define BIO_F_BIO_GET_ACCEPT_SOCKET 105
#define BIO_F_BIO_GET_HOST_IP 106
#define BIO_F_BIO_GET_PORT 107
#define BIO_F_BIO_MAKE_PAIR 121
#define BIO_F_BIO_NEW 108
#define BIO_F_BIO_NEW_FILE 109
#define BIO_F_BIO_NEW_MEM_BUF 126
#define BIO_F_BIO_NREAD 123
#define BIO_F_BIO_NREAD0 124
#define BIO_F_BIO_NWRITE 125
#define BIO_F_BIO_NWRITE0 122
#define BIO_F_BIO_PUTS 110
#define BIO_F_BIO_READ 111
#define BIO_F_BIO_SOCK_INIT 112
#define BIO_F_BIO_WRITE 113
#define BIO_F_BUFFER_CTRL 114
#define BIO_F_CONN_CTRL 127
#define BIO_F_CONN_STATE 115
#define BIO_F_FILE_CTRL 116
#define BIO_F_MEM_WRITE 117
#define BIO_F_SSL_NEW 118
#define BIO_F_WSASTARTUP 119
/* Reason codes. */
#define BIO_R_ACCEPT_ERROR 100
#define BIO_R_BAD_FOPEN_MODE 101
#define BIO_R_BAD_HOSTNAME_LOOKUP 102
#define BIO_R_BROKEN_PIPE 124
#define BIO_R_CONNECT_ERROR 103
#define BIO_R_ERROR_SETTING_NBIO 104
#define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET 105
#define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET 106
#define BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET 107
#define BIO_R_INVALID_ARGUMENT 125
#define BIO_R_INVALID_IP_ADDRESS 108
#define BIO_R_IN_USE 123
#define BIO_R_KEEPALIVE 109
#define BIO_R_NBIO_CONNECT_ERROR 110
#define BIO_R_NO_ACCEPT_PORT_SPECIFIED 111
#define BIO_R_NO_HOSTNAME_SPECIFIED 112
#define BIO_R_NO_PORT_DEFINED 113
#define BIO_R_NO_PORT_SPECIFIED 114
#define BIO_R_NULL_PARAMETER 115
#define BIO_R_TAG_MISMATCH 116
#define BIO_R_UNABLE_TO_BIND_SOCKET 117
#define BIO_R_UNABLE_TO_CREATE_SOCKET 118
#define BIO_R_UNABLE_TO_LISTEN_SOCKET 119
#define BIO_R_UNINITIALIZED 120
#define BIO_R_UNSUPPORTED_METHOD 121
#define BIO_R_WRITE_TO_READ_ONLY_BIO 126
#define BIO_R_WSASTARTUP 122
#ifdef __cplusplus
}
#endif
#endif
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