sl@0: /* crypto/bio/bio_lib.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <errno.h>
sl@0: #include <openssl/crypto.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/bio.h>
sl@0: #include <openssl/stack.h>
sl@0: 
sl@0: EXPORT_C BIO *BIO_new(BIO_METHOD *method)
sl@0: 	{
sl@0: 	BIO *ret=NULL;
sl@0: 
sl@0: 	ret=(BIO *)OPENSSL_malloc(sizeof(BIO));
sl@0: 	if (ret == NULL)
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_NEW,ERR_R_MALLOC_FAILURE);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: #ifdef SYMBIAN
sl@0:    memset(ret,0,sizeof(BIO));
sl@0: #endif		
sl@0: 	if (!BIO_set(ret,method))
sl@0: 		{
sl@0: 		OPENSSL_free(ret);
sl@0: 		ret=NULL;
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_set(BIO *bio, BIO_METHOD *method)
sl@0: 	{
sl@0: 	bio->method=method;
sl@0: 	bio->callback=NULL;
sl@0: 	bio->cb_arg=NULL;
sl@0: 	bio->init=0;
sl@0: 	bio->shutdown=1;
sl@0: 	bio->flags=0;
sl@0: 	bio->retry_reason=0;
sl@0: 	bio->num=0;
sl@0: 	bio->ptr=NULL;
sl@0: 	bio->prev_bio=NULL;
sl@0: 	bio->next_bio=NULL;
sl@0: 	bio->references=1;
sl@0: 	bio->num_read=0L;
sl@0: 	bio->num_write=0L;
sl@0: 	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
sl@0: 	if (method->create != NULL)
sl@0: 		if (!method->create(bio))
sl@0: 			{
sl@0: 			CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio,
sl@0: 					&bio->ex_data);
sl@0: 			return(0);
sl@0: 			}
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_free(BIO *a)
sl@0: 	{
sl@0: 	int ret=0,i;
sl@0: 
sl@0: 	if (a == NULL) return(0);
sl@0: 
sl@0: 	i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_BIO);
sl@0: #ifdef REF_PRINT
sl@0: 	REF_PRINT("BIO",a);
sl@0: #endif
sl@0: 	if (i > 0) return(1);
sl@0: #ifdef REF_CHECK
sl@0: 	if (i < 0)
sl@0: 		{
sl@0: 		fprintf(stderr,"BIO_free, bad reference count\n");
sl@0: 		abort();
sl@0: 		}
sl@0: #endif
sl@0: 	if ((a->callback != NULL) &&
sl@0: 		((i=(int)a->callback(a,BIO_CB_FREE,NULL,0,0L,1L)) <= 0))
sl@0: 			return(i);
sl@0: 
sl@0: 	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data);
sl@0: 
sl@0: 	if ((a->method == NULL) || (a->method->destroy == NULL)) return(1);
sl@0: 	ret=a->method->destroy(a);
sl@0: 	OPENSSL_free(a);
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void BIO_vfree(BIO *a)
sl@0:     { BIO_free(a); }
sl@0: 
sl@0: EXPORT_C void BIO_clear_flags(BIO *b, int flags)
sl@0: 	{
sl@0: 	b->flags &= ~flags;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int	BIO_test_flags(const BIO *b, int flags)
sl@0: 	{
sl@0: 	return (b->flags & flags);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void	BIO_set_flags(BIO *b, int flags)
sl@0: 	{
sl@0: 	b->flags |= flags;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C long (*BIO_get_callback(const BIO *b))(struct bio_st *,int,const char *,int, long,long)
sl@0: 	{
sl@0: 	return b->callback;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void BIO_set_callback(BIO *b, long (*cb)(struct bio_st *,int,const char *,int, long,long))
sl@0: 	{
sl@0: 	b->callback = cb;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void BIO_set_callback_arg(BIO *b, char *arg)
sl@0: 	{
sl@0: 	b->cb_arg = arg;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C char * BIO_get_callback_arg(const BIO *b)
sl@0: 	{
sl@0: 	return b->cb_arg;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C const char * BIO_method_name(const BIO *b)
sl@0: 	{
sl@0: 	return b->method->name;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_method_type(const BIO *b)
sl@0: 	{
sl@0: 	return b->method->type;
sl@0: 	}
sl@0: EXPORT_C int BIO_read(BIO *b, void *out, int outl)
sl@0: 	{
sl@0: 	int i;
sl@0: 	long (*cb)(BIO *,int,const char *,int,long,long);
sl@0: 
sl@0: 	if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL))
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_READ,BIO_R_UNSUPPORTED_METHOD);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	cb=b->callback;
sl@0: 	if ((cb != NULL) &&
sl@0: 		((i=(int)cb(b,BIO_CB_READ,out,outl,0L,1L)) <= 0))
sl@0: 			return(i);
sl@0: 
sl@0: 	if (!b->init)
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_READ,BIO_R_UNINITIALIZED);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	i=b->method->bread(b,out,outl);
sl@0: 
sl@0: 	if (i > 0) b->num_read+=(unsigned long)i;
sl@0: 
sl@0: 	if (cb != NULL)
sl@0: 		i=(int)cb(b,BIO_CB_READ|BIO_CB_RETURN,out,outl,
sl@0: 			0L,(long)i);
sl@0: 	return(i);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_write(BIO *b, const void *in, int inl)
sl@0: 	{
sl@0: 	int i;
sl@0: 	long (*cb)(BIO *,int,const char *,int,long,long);
sl@0: 
sl@0: 	if (b == NULL)
sl@0: 		return(0);
sl@0: 
sl@0: 	cb=b->callback;
sl@0: 	if ((b->method == NULL) || (b->method->bwrite == NULL))
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_WRITE,BIO_R_UNSUPPORTED_METHOD);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	if ((cb != NULL) &&
sl@0: 		((i=(int)cb(b,BIO_CB_WRITE,in,inl,0L,1L)) <= 0))
sl@0: 			return(i);
sl@0: 
sl@0: 	if (!b->init)
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_WRITE,BIO_R_UNINITIALIZED);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	i=b->method->bwrite(b,in,inl);
sl@0: 
sl@0: 	if (i > 0) b->num_write+=(unsigned long)i;
sl@0: 
sl@0: 	if (cb != NULL)
sl@0: 		i=(int)cb(b,BIO_CB_WRITE|BIO_CB_RETURN,in,inl,
sl@0: 			0L,(long)i);
sl@0: 	return(i);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_puts(BIO *b, const char *in)
sl@0: 	{
sl@0: 	int i;
sl@0: 	long (*cb)(BIO *,int,const char *,int,long,long);
sl@0: 
sl@0: 	if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL))
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_PUTS,BIO_R_UNSUPPORTED_METHOD);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	cb=b->callback;
sl@0: 
sl@0: 	if ((cb != NULL) &&
sl@0: 		((i=(int)cb(b,BIO_CB_PUTS,in,0,0L,1L)) <= 0))
sl@0: 			return(i);
sl@0: 
sl@0: 	if (!b->init)
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_PUTS,BIO_R_UNINITIALIZED);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	i=b->method->bputs(b,in);
sl@0: 
sl@0: 	if (i > 0) b->num_write+=(unsigned long)i;
sl@0: 
sl@0: 	if (cb != NULL)
sl@0: 		i=(int)cb(b,BIO_CB_PUTS|BIO_CB_RETURN,in,0,
sl@0: 			0L,(long)i);
sl@0: 	return(i);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_gets(BIO *b, char *in, int inl)
sl@0: 	{
sl@0: 	int i;
sl@0: 	long (*cb)(BIO *,int,const char *,int,long,long);
sl@0: 
sl@0: 	if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL))
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_GETS,BIO_R_UNSUPPORTED_METHOD);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	cb=b->callback;
sl@0: 
sl@0: 	if ((cb != NULL) &&
sl@0: 		((i=(int)cb(b,BIO_CB_GETS,in,inl,0L,1L)) <= 0))
sl@0: 			return(i);
sl@0: 
sl@0: 	if (!b->init)
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_GETS,BIO_R_UNINITIALIZED);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	i=b->method->bgets(b,in,inl);
sl@0: 
sl@0: 	if (cb != NULL)
sl@0: 		i=(int)cb(b,BIO_CB_GETS|BIO_CB_RETURN,in,inl,
sl@0: 			0L,(long)i);
sl@0: 	return(i);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_indent(BIO *b,int indent,int max)
sl@0: 	{
sl@0: 	if(indent < 0)
sl@0: 		indent=0;
sl@0: 	if(indent > max)
sl@0: 		indent=max;
sl@0: 	while(indent--)
sl@0: 		if(BIO_puts(b," ") != 1)
sl@0: 			return 0;
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg)
sl@0: 	{
sl@0: 	int i;
sl@0: 
sl@0: 	i=iarg;
sl@0: 	return(BIO_ctrl(b,cmd,larg,(char *)&i));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C char *BIO_ptr_ctrl(BIO *b, int cmd, long larg)
sl@0: 	{
sl@0: 	char *p=NULL;
sl@0: 
sl@0: 	if (BIO_ctrl(b,cmd,larg,(char *)&p) <= 0)
sl@0: 		return(NULL);
sl@0: 	else
sl@0: 		return(p);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C long BIO_ctrl(BIO *b, int cmd, long larg, void *parg)
sl@0: 	{
sl@0: 	long ret;
sl@0: 	long (*cb)(BIO *,int,const char *,int,long,long);
sl@0: 
sl@0: 	if (b == NULL) return(0);
sl@0: 
sl@0: 	if ((b->method == NULL) || (b->method->ctrl == NULL))
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	cb=b->callback;
sl@0: 
sl@0: 	if ((cb != NULL) &&
sl@0: 		((ret=cb(b,BIO_CB_CTRL,parg,cmd,larg,1L)) <= 0))
sl@0: 		return(ret);
sl@0: 
sl@0: 	ret=b->method->ctrl(b,cmd,larg,parg);
sl@0: 
sl@0: 	if (cb != NULL)
sl@0: 		ret=cb(b,BIO_CB_CTRL|BIO_CB_RETURN,parg,cmd,
sl@0: 			larg,ret);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)(struct bio_st *, int, const char *, int, long, long))
sl@0: 	{
sl@0: 	long ret;
sl@0: 	long (*cb)(BIO *,int,const char *,int,long,long);
sl@0: 
sl@0: 	if (b == NULL) return(0);
sl@0: 
sl@0: 	if ((b->method == NULL) || (b->method->callback_ctrl == NULL))
sl@0: 		{
sl@0: 		BIOerr(BIO_F_BIO_CALLBACK_CTRL,BIO_R_UNSUPPORTED_METHOD);
sl@0: 		return(-2);
sl@0: 		}
sl@0: 
sl@0: 	cb=b->callback;
sl@0: 
sl@0: 	if ((cb != NULL) &&
sl@0: 		((ret=cb(b,BIO_CB_CTRL,(void *)&fp,cmd,0,1L)) <= 0))
sl@0: 		return(ret);
sl@0: 
sl@0: 	ret=b->method->callback_ctrl(b,cmd,fp);
sl@0: 
sl@0: 	if (cb != NULL)
sl@0: 		ret=cb(b,BIO_CB_CTRL|BIO_CB_RETURN,(void *)&fp,cmd,
sl@0: 			0,ret);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: /* It is unfortunate to duplicate in functions what the BIO_(w)pending macros
sl@0:  * do; but those macros have inappropriate return type, and for interfacing
sl@0:  * from other programming languages, C macros aren't much of a help anyway. */
sl@0: EXPORT_C size_t BIO_ctrl_pending(BIO *bio)
sl@0: 	{
sl@0: 	return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C size_t BIO_ctrl_wpending(BIO *bio)
sl@0: 	{
sl@0: 	return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /* put the 'bio' on the end of b's list of operators */
sl@0: EXPORT_C BIO *BIO_push(BIO *b, BIO *bio)
sl@0: 	{
sl@0: 	BIO *lb;
sl@0: 
sl@0: 	if (b == NULL) return(bio);
sl@0: 	lb=b;
sl@0: 	while (lb->next_bio != NULL)
sl@0: 		lb=lb->next_bio;
sl@0: 	lb->next_bio=bio;
sl@0: 	if (bio != NULL)
sl@0: 		bio->prev_bio=lb;
sl@0: 	/* called to do internal processing */
sl@0: 	BIO_ctrl(b,BIO_CTRL_PUSH,0,NULL);
sl@0: 	return(b);
sl@0: 	}
sl@0: 
sl@0: /* Remove the first and return the rest */
sl@0: EXPORT_C BIO *BIO_pop(BIO *b)
sl@0: 	{
sl@0: 	BIO *ret;
sl@0: 
sl@0: 	if (b == NULL) return(NULL);
sl@0: 	ret=b->next_bio;
sl@0: 
sl@0: 	BIO_ctrl(b,BIO_CTRL_POP,0,NULL);
sl@0: 
sl@0: 	if (b->prev_bio != NULL)
sl@0: 		b->prev_bio->next_bio=b->next_bio;
sl@0: 	if (b->next_bio != NULL)
sl@0: 		b->next_bio->prev_bio=b->prev_bio;
sl@0: 
sl@0: 	b->next_bio=NULL;
sl@0: 	b->prev_bio=NULL;
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C BIO *BIO_get_retry_BIO(BIO *bio, int *reason)
sl@0: 	{
sl@0: 	BIO *b,*last;
sl@0: 
sl@0: 	b=last=bio;
sl@0: 	for (;;)
sl@0: 		{
sl@0: 		if (!BIO_should_retry(b)) break;
sl@0: 		last=b;
sl@0: 		b=b->next_bio;
sl@0: 		if (b == NULL) break;
sl@0: 		}
sl@0: 	if (reason != NULL) *reason=last->retry_reason;
sl@0: 	return(last);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_get_retry_reason(BIO *bio)
sl@0: 	{
sl@0: 	return(bio->retry_reason);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C BIO *BIO_find_type(BIO *bio, int type)
sl@0: 	{
sl@0: 	int mt,mask;
sl@0: 
sl@0: 	if(!bio) return NULL;
sl@0: 	mask=type&0xff;
sl@0: 	do	{
sl@0: 		if (bio->method != NULL)
sl@0: 			{
sl@0: 			mt=bio->method->type;
sl@0: 
sl@0: 			if (!mask)
sl@0: 				{
sl@0: 				if (mt & type) return(bio);
sl@0: 				}
sl@0: 			else if (mt == type)
sl@0: 				return(bio);
sl@0: 			}
sl@0: 		bio=bio->next_bio;
sl@0: 		} while (bio != NULL);
sl@0: 	return(NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C BIO *BIO_next(BIO *b)
sl@0: 	{
sl@0: 	if(!b) return NULL;
sl@0: 	return b->next_bio;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void BIO_free_all(BIO *bio)
sl@0: 	{
sl@0: 	BIO *b;
sl@0: 	int ref;
sl@0: 
sl@0: 	while (bio != NULL)
sl@0: 		{
sl@0: 		b=bio;
sl@0: 		ref=b->references;
sl@0: 		bio=bio->next_bio;
sl@0: 		BIO_free(b);
sl@0: 		/* Since ref count > 1, don't free anyone else. */
sl@0: 		if (ref > 1) break;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C BIO *BIO_dup_chain(BIO *in)
sl@0: 	{
sl@0: 	BIO *ret=NULL,*eoc=NULL,*bio,*new;
sl@0: 
sl@0: 	for (bio=in; bio != NULL; bio=bio->next_bio)
sl@0: 		{
sl@0: 		if ((new=BIO_new(bio->method)) == NULL) goto err;
sl@0: 		new->callback=bio->callback;
sl@0: 		new->cb_arg=bio->cb_arg;
sl@0: 		new->init=bio->init;
sl@0: 		new->shutdown=bio->shutdown;
sl@0: 		new->flags=bio->flags;
sl@0: 
sl@0: 		/* This will let SSL_s_sock() work with stdin/stdout */
sl@0: 		new->num=bio->num;
sl@0: 
sl@0: 		if (!BIO_dup_state(bio,(char *)new))
sl@0: 			{
sl@0: 			BIO_free(new);
sl@0: 			goto err;
sl@0: 			}
sl@0: 
sl@0: 		/* copy app data */
sl@0: 		if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new->ex_data,
sl@0: 					&bio->ex_data))
sl@0: 			goto err;
sl@0: 
sl@0: 		if (ret == NULL)
sl@0: 			{
sl@0: 			eoc=new;
sl@0: 			ret=eoc;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			BIO_push(eoc,new);
sl@0: 			eoc=new;
sl@0: 			}
sl@0: 		}
sl@0: 	return(ret);
sl@0: err:
sl@0: 	if (ret != NULL)
sl@0: 		BIO_free(ret);
sl@0: 	return(NULL);	
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void BIO_copy_next_retry(BIO *b)
sl@0: 	{
sl@0: 	BIO_set_flags(b,BIO_get_retry_flags(b->next_bio));
sl@0: 	b->retry_reason=b->next_bio->retry_reason;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
sl@0: 	     CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
sl@0: 	{
sl@0: 	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, argl, argp,
sl@0: 				new_func, dup_func, free_func);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_set_ex_data(BIO *bio, int idx, void *data)
sl@0: 	{
sl@0: 	return(CRYPTO_set_ex_data(&(bio->ex_data),idx,data));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void *BIO_get_ex_data(BIO *bio, int idx)
sl@0: 	{
sl@0: 	return(CRYPTO_get_ex_data(&(bio->ex_data),idx));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C unsigned long BIO_number_read(BIO *bio)
sl@0: {
sl@0: 	if(bio) return bio->num_read;
sl@0: 	return 0;
sl@0: }
sl@0: 
sl@0: EXPORT_C unsigned long BIO_number_written(BIO *bio)
sl@0: {
sl@0: 	if(bio) return bio->num_write;
sl@0: 	return 0;
sl@0: }
sl@0: 
sl@0: IMPLEMENT_STACK_OF(BIO)