--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ssl/libcrypto/src/crypto/bio/bf_nbio.c	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,255 @@
+/* crypto/bio/bf_nbio.c */
+/* 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.]
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include "cryptlib.h"
+#include <openssl/rand.h>
+#include <openssl/bio.h>
+
+/* BIO_put and BIO_get both add to the digest,
+ * BIO_gets returns the digest */
+
+static int nbiof_write(BIO *h,const char *buf,int num);
+static int nbiof_read(BIO *h,char *buf,int size);
+static int nbiof_puts(BIO *h,const char *str);
+static int nbiof_gets(BIO *h,char *str,int size);
+static long nbiof_ctrl(BIO *h,int cmd,long arg1,void *arg2);
+static int nbiof_new(BIO *h);
+static int nbiof_free(BIO *data);
+static long nbiof_callback_ctrl(BIO *h,int cmd,bio_info_cb *fp);
+typedef struct nbio_test_st
+	{
+	/* only set if we sent a 'should retry' error */
+	int lrn;
+	int lwn;
+	} NBIO_TEST;
+
+static BIO_METHOD methods_nbiof=
+	{
+	BIO_TYPE_NBIO_TEST,
+	"non-blocking IO test filter",
+	nbiof_write,
+	nbiof_read,
+	nbiof_puts,
+	nbiof_gets,
+	nbiof_ctrl,
+	nbiof_new,
+	nbiof_free,
+	nbiof_callback_ctrl,
+	};
+
+EXPORT_C BIO_METHOD *BIO_f_nbio_test(void)
+	{
+	return(&methods_nbiof);
+	}
+
+static int nbiof_new(BIO *bi)
+	{
+	NBIO_TEST *nt;
+
+	if (!(nt=(NBIO_TEST *)OPENSSL_malloc(sizeof(NBIO_TEST)))) return(0);
+	nt->lrn= -1;
+	nt->lwn= -1;
+	bi->ptr=(char *)nt;
+	bi->init=1;
+	bi->flags=0;
+	return(1);
+	}
+
+static int nbiof_free(BIO *a)
+	{
+	if (a == NULL) return(0);
+	if (a->ptr != NULL)
+		OPENSSL_free(a->ptr);
+	a->ptr=NULL;
+	a->init=0;
+	a->flags=0;
+	return(1);
+	}
+	
+static int nbiof_read(BIO *b, char *out, int outl)
+	{
+	NBIO_TEST *nt;
+	int ret=0;
+#if 1
+	int num;
+	unsigned char n;
+#endif
+
+	if (out == NULL) return(0);
+	if (b->next_bio == NULL) return(0);
+	nt=(NBIO_TEST *)b->ptr;
+
+	BIO_clear_retry_flags(b);
+#if 1
+	RAND_pseudo_bytes(&n,1);
+	num=(n&0x07);
+
+	if (outl > num) outl=num;
+
+	if (num == 0)
+		{
+		ret= -1;
+		BIO_set_retry_read(b);
+		}
+	else
+#endif
+		{
+		ret=BIO_read(b->next_bio,out,outl);
+		if (ret < 0)
+			BIO_copy_next_retry(b);
+		}
+	return(ret);
+	}
+
+static int nbiof_write(BIO *b, const char *in, int inl)
+	{
+	NBIO_TEST *nt;
+	int ret=0;
+	int num;
+	unsigned char n;
+
+	if ((in == NULL) || (inl <= 0)) return(0);
+	if (b->next_bio == NULL) return(0);
+	nt=(NBIO_TEST *)b->ptr;
+
+	BIO_clear_retry_flags(b);
+
+#if 1
+	if (nt->lwn > 0)
+		{
+		num=nt->lwn;
+		nt->lwn=0;
+		}
+	else
+		{
+		RAND_pseudo_bytes(&n,1);
+		num=(n&7);
+		}
+
+	if (inl > num) inl=num;
+
+	if (num == 0)
+		{
+		ret= -1;
+		BIO_set_retry_write(b);
+		}
+	else
+#endif
+		{
+		ret=BIO_write(b->next_bio,in,inl);
+		if (ret < 0)
+			{
+			BIO_copy_next_retry(b);
+			nt->lwn=inl;
+			}
+		}
+	return(ret);
+	}
+
+static long nbiof_ctrl(BIO *b, int cmd, long num, void *ptr)
+	{
+	long ret;
+
+	if (b->next_bio == NULL) return(0);
+	switch (cmd)
+		{
+        case BIO_C_DO_STATE_MACHINE:
+		BIO_clear_retry_flags(b);
+		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+		BIO_copy_next_retry(b);
+		break;
+	case BIO_CTRL_DUP:
+		ret=0L;
+		break;
+	default:
+		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+		break;
+		}
+	return(ret);
+	}
+
+static long nbiof_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
+	{
+	long ret=1;
+
+	if (b->next_bio == NULL) return(0);
+	switch (cmd)
+		{
+	default:
+		ret=BIO_callback_ctrl(b->next_bio,cmd,fp);
+		break;
+		}
+	return(ret);
+	}
+
+static int nbiof_gets(BIO *bp, char *buf, int size)
+	{
+	if (bp->next_bio == NULL) return(0);
+	return(BIO_gets(bp->next_bio,buf,size));
+	}
+
+
+static int nbiof_puts(BIO *bp, const char *str)
+	{
+	if (bp->next_bio == NULL) return(0);
+	return(BIO_puts(bp->next_bio,str));
+	}
+
+