/* 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.]

  */

  /*

  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  */

 #ifndef HEADER_BIO_H

 #define HEADER_BIO_H

 #if (defined(__SYMBIAN32__) && !defined(SYMBIAN))

 #define SYMBIAN

 #endif

 #ifdef SYMBIAN

 #include <e32def.h>

 #endif

 #include <openssl/e_os2.h>

 #ifndef OPENSSL_NO_FP_API

 # include <stdio.h>

 #endif

 #include <stdarg.h>

 #include <openssl/crypto.h>

 #ifdef  __cplusplus

 extern "C" {

 #endif

 /* 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_LINEBUFFER	(20|0x0200)		/* filter */

 #define BIO_TYPE_DGRAM		(21|0x0400|0x0100)

 #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 */

 /* 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 tiemd 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_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_SET_PEER           44 /* Destination for the data */

 /* 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	BIO_FLAGS_UPLINK

 /* "UPLINK" flag denotes file descriptors provided by application.

    It defaults to 0, as most platforms don't require UPLINK interface. */

 #define	BIO_FLAGS_UPLINK	0

 #endif

 /* 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

 typedef struct bio_st BIO;

 IMPORT_C void BIO_vfree(BIO *a);

 IMPORT_C void BIO_clear_flags(BIO *b, int flags);

 IMPORT_C int	BIO_test_flags(const BIO *b, int flags);

 IMPORT_C void	BIO_set_flags(BIO *b, int flags);

 IMPORT_C long (*BIO_get_callback(const BIO *b))(struct bio_st *,int,const char *,int, long,long);

 IMPORT_C void BIO_set_callback(BIO *b, long (*cb)(struct bio_st *,int,const char *,int, long,long));

 IMPORT_C void BIO_set_callback_arg(BIO *b, char *arg);

 IMPORT_C char * BIO_get_callback_arg(const BIO *b);

 IMPORT_C const char * BIO_method_name(const BIO *b);

 IMPORT_C int BIO_method_type(const BIO *b);

 #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

 /* 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)

 long (*BIO_get_callback(const BIO *b)) (struct bio_st *,int,const char *,int, long,long);

 void BIO_set_callback(BIO *b, 

 	long (*callback)(struct bio_st *,int,const char *,int, long,long));

 char *BIO_get_callback_arg(const BIO *b);

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

 const char * BIO_method_name(const BIO *b);

 int BIO_method_type(const BIO *b);

 typedef void bio_info_cb(struct bio_st *, int, const char *, int, long, long);

 #ifndef OPENSSL_SYS_WIN16

 typedef struct bio_method_st

 	{

 	int type;

 	const char *name;

 	int (*bwrite)(BIO *, const char *, int);

 	int (*bread)(BIO *, char *, int);

 	int (*bputs)(BIO *, const char *);

 	int (*bgets)(BIO *, char *, int);

 	long (*ctrl)(BIO *, int, long, void *);

 	int (*create)(BIO *);

 	int (*destroy)(BIO *);

         long (*callback_ctrl)(BIO *, int, bio_info_cb *);

 	} 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 (_far *callback_ctrl)();

 	} BIO_METHOD;

 #endif

 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;

 	};

 DECLARE_STACK_OF(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_C_SET_MD_CTX			148

 #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) 		 BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2)

 #define BIO_get_conn_int_port(b) BIO_int_ctrl(b,BIO_C_GET_CONNECT,3)

 #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_GET_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, \

 						   cbp)

 #define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,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)

 #define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 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);

 /* ctrl macros for dgram */

 #define BIO_ctrl_dgram_connect(b,peer)  \

                      (int)BIO_ctrl(b,BIO_CTRL_DGRAM_CONNECT,0, (char *)peer)

 #define BIO_ctrl_set_connected(b, state, peer) \

          (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_CONNECTED, state, (char *)peer)

 #define BIO_dgram_recv_timedout(b) \

          (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP, 0, NULL)

 #define BIO_dgram_send_timedout(b) \

          (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP, 0, NULL)

 #define BIO_dgram_set_peer(b,peer) \

          (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, (char *)peer)

 /* 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)()); */

 IMPORT_C int BIO_set_ex_data(BIO *bio,int idx,void *data);

 IMPORT_C void *BIO_get_ex_data(BIO *bio,int idx);

 IMPORT_C 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);

 IMPORT_C unsigned long BIO_number_read(BIO *bio);

 IMPORT_C unsigned long BIO_number_written(BIO *bio);

 # ifndef OPENSSL_NO_FP_API

 #  if defined(OPENSSL_SYS_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 */

 IMPORT_C BIO_METHOD *BIO_s_file(void );

 IMPORT_C BIO *BIO_new_file(const char *filename, const char *mode);

 IMPORT_C 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 */

 # endif

 IMPORT_C BIO *	BIO_new(BIO_METHOD *type);

 IMPORT_C int	BIO_set(BIO *a,BIO_METHOD *type);

 IMPORT_C int	BIO_free(BIO *a);

 IMPORT_C void	BIO_vfree(BIO *a);

 IMPORT_C void BIO_clear_flags(BIO *b, int flags);

 IMPORT_C int	BIO_test_flags(const BIO *b, int flags);

 IMPORT_C void	BIO_set_flags(BIO *b, int flags);

 IMPORT_C long (*BIO_get_callback(const BIO *b))(struct bio_st *,int,const char *,int, long,long);

 IMPORT_C void BIO_set_callback(BIO *b, long (*cb)(struct bio_st *,int,const char *,int, long,long));

 IMPORT_C void BIO_set_callback_arg(BIO *b, char *arg);

 IMPORT_C char * BIO_get_callback_arg(const BIO *b);

 IMPORT_C const char * BIO_method_name(const BIO *b);

 IMPORT_C int BIO_method_type(const BIO *b);

 IMPORT_C int	BIO_read(BIO *b, void *data, int len);

 IMPORT_C int	BIO_gets(BIO *bp,char *buf, int size);

 IMPORT_C int	BIO_write(BIO *b, const void *data, int len);

 IMPORT_C int	BIO_puts(BIO *bp,const char *buf);

 IMPORT_C int	BIO_indent(BIO *b,int indent,int max);

 IMPORT_C long	BIO_ctrl(BIO *bp,int cmd,long larg,void *parg);

 IMPORT_C long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)(struct bio_st *, int, const char *, int, long, long));

 IMPORT_C char *	BIO_ptr_ctrl(BIO *bp,int cmd,long larg);

 IMPORT_C long	BIO_int_ctrl(BIO *bp,int cmd,long larg,int iarg);

 IMPORT_C BIO *	BIO_push(BIO *b,BIO *append);

 IMPORT_C BIO *	BIO_pop(BIO *b);

 IMPORT_C void	BIO_free_all(BIO *a);

 IMPORT_C BIO *	BIO_find_type(BIO *b,int bio_type);

 IMPORT_C BIO *	BIO_next(BIO *b);

 IMPORT_C BIO *	BIO_get_retry_BIO(BIO *bio, int *reason);

 IMPORT_C int	BIO_get_retry_reason(BIO *bio);

 IMPORT_C BIO *	BIO_dup_chain(BIO *in);

 IMPORT_C int BIO_nread0(BIO *bio, char **buf);

 IMPORT_C int BIO_nread(BIO *bio, char **buf, int num);

 IMPORT_C int BIO_nwrite0(BIO *bio, char **buf);

 IMPORT_C int BIO_nwrite(BIO *bio, char **buf, int num);

 #ifndef OPENSSL_SYS_WIN16

 long BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,

 	long argl,long ret);

 #else

 IMPORT_C long _far _loadds BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,

 	long argl,long ret);

 #endif

 IMPORT_C BIO_METHOD *BIO_s_mem(void);

 IMPORT_C BIO *BIO_new_mem_buf(void *buf, int len);

 IMPORT_C BIO_METHOD *BIO_s_socket(void);

 IMPORT_C BIO_METHOD *BIO_s_connect(void);

 IMPORT_C BIO_METHOD *BIO_s_accept(void);

 IMPORT_C BIO_METHOD *BIO_s_fd(void);

 IMPORT_C BIO_METHOD *BIO_s_bio(void);

 IMPORT_C BIO_METHOD *BIO_s_null(void);

 IMPORT_C BIO_METHOD *BIO_f_null(void);

 IMPORT_C BIO_METHOD *BIO_f_buffer(void);

 IMPORT_C BIO_METHOD *BIO_f_nbio_test(void);

 #ifndef OPENSSL_NO_DGRAM

 IMPORT_C BIO_METHOD *BIO_s_datagram(void);

 #endif

 /* BIO_METHOD *BIO_f_ber(void); */

 IMPORT_C int BIO_sock_should_retry(int i);

 IMPORT_C int BIO_sock_non_fatal_error(int error);

 IMPORT_C int BIO_dgram_non_fatal_error(int error);

 IMPORT_C int BIO_fd_should_retry(int i);

 IMPORT_C int BIO_fd_non_fatal_error(int error);

 IMPORT_C int BIO_dump_cb(int (*cb)(const void *data, size_t len, void *u),

 		void *u, const char *s, int len);

 IMPORT_C int BIO_dump_indent_cb(int (*cb)(const void *data, size_t len, void *u),

 		       void *u, const char *s, int len, int indent);

 IMPORT_C int BIO_dump(BIO *b,const char *bytes,int len);

 IMPORT_C int BIO_dump_indent(BIO *b,const char *bytes,int len,int indent);

 #ifndef OPENSSL_NO_FP_API

 IMPORT_C int BIO_dump_fp(FILE *fp, const char *s, int len);

 IMPORT_C int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent);

 #endif

 IMPORT_C 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).

  */

 IMPORT_C int BIO_sock_error(int sock);

 IMPORT_C int BIO_socket_ioctl(int fd, long type, void *arg);

 IMPORT_C int BIO_socket_nbio(int fd,int mode);

 IMPORT_C int BIO_get_port(const char *str, unsigned short *port_ptr);

 IMPORT_C int BIO_get_host_ip(const char *str, unsigned char *ip);

 IMPORT_C int BIO_get_accept_socket(char *host_port,int mode);

 IMPORT_C int BIO_accept(int sock,char **ip_port);

 IMPORT_C int BIO_sock_init(void );

 IMPORT_C void BIO_sock_cleanup(void);

 IMPORT_C int BIO_set_tcp_ndelay(int sock,int turn_on);

 IMPORT_C BIO *BIO_new_socket(int sock, int close_flag);

 IMPORT_C BIO *BIO_new_dgram(int fd, int close_flag);

 IMPORT_C BIO *BIO_new_fd(int fd, int close_flag);

 IMPORT_C BIO *BIO_new_connect(char *host_port);

 IMPORT_C BIO *BIO_new_accept(char *host_port);

 IMPORT_C 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.

  */

 IMPORT_C void BIO_copy_next_retry(BIO *b);

 /*long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);*/

 #ifdef __GNUC__

 #  define __bio_h__attr__ __attribute__

 #else

 #  define __bio_h__attr__(x)

 #endif

 IMPORT_C int BIO_printf(BIO *bio, const char *format, ...)

 	__bio_h__attr__((__format__(__printf__,2,3)));

 int BIO_vprintf(BIO *bio, const char *format, va_list args)

 	__bio_h__attr__((__format__(__printf__,2,0)));

 IMPORT_C int BIO_snprintf(char *buf, size_t n, const char *format, ...)

 	__bio_h__attr__((__format__(__printf__,3,4)));

 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)

 	__bio_h__attr__((__format__(__printf__,3,0)));

 #undef __bio_h__attr__

 /* 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.

  */

 IMPORT_C void ERR_load_BIO_strings(void);

 /* 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_CALLBACK_CTRL				 131

 #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_FILE_READ					 130

 #define BIO_F_LINEBUFFER_CTRL				 129

 #define BIO_F_MEM_READ					 128

 #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_EOF_ON_MEMORY_BIO				 127

 #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_NO_SUCH_FILE				 128

 #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