diff -r deec7e509f66 -r ca9a0fc2f082 securityanddataprivacytools/openssllib/import/inc/openssl/bio.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/securityanddataprivacytools/openssllib/import/inc/openssl/bio.h	Sat Oct 30 16:29:23 2010 +0530
@@ -0,0 +1,695 @@
+/* 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
+
+#ifndef OPENSSL_NO_FP_API
+# include <stdio.h>
+#endif
+#include <stdarg.h>
+
+#include <openssl/crypto.h>
+#include <openssl/e_os2.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_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 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)
+
+#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)
+
+typedef struct bio_st BIO;
+
+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_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);
+
+/* 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);
+
+# 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 */
+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 */
+# endif
+BIO *	BIO_new(BIO_METHOD *type);
+int	BIO_set(BIO *a,BIO_METHOD *type);
+int	BIO_free(BIO *a);
+void	BIO_vfree(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);
+int	BIO_indent(BIO *b,int indent,int max);
+long	BIO_ctrl(BIO *bp,int cmd,long larg,void *parg);
+long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)(struct bio_st *, int, const char *, int, long, long));
+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_next(BIO *b);
+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 OPENSSL_SYS_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);
+#ifndef OPENSSL_SYS_OS2
+BIO_METHOD *BIO_s_log(void);
+#endif
+BIO_METHOD *BIO_s_bio(void);
+BIO_METHOD *BIO_s_null(void);
+BIO_METHOD *BIO_f_null(void);
+BIO_METHOD *BIO_f_buffer(void);
+#ifdef OPENSSL_SYS_VMS
+BIO_METHOD *BIO_f_linebuffer(void);
+#endif
+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);
+int BIO_dump_indent(BIO *b,const char *bytes,int len,int indent);
+
+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, void *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);
+
+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, const char *format, ...);
+int BIO_vprintf(BIO *bio, const char *format, va_list args);
+int BIO_snprintf(char *buf, size_t n, const char *format, ...);
+int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args);
+
+/* 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.
+ */
+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_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
+