1 files changed, 447 insertions, 0 deletions
diff --git a/crypto/bio/bio_lib.c b/crypto/bio/bio_lib.c
new file mode 100644
index 0000000000..78e896f9ae
--- /dev/null
+++ b/crypto/bio/bio_lib.c
@@ -0,0 +1,447 @@
+/* crypto/bio/bio_lib.c */
+/* Copyright (C) 1995-1997 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 "bio.h"
+
+BIO *BIO_new(method)
+BIO_METHOD *method;
+	{
+	BIO *ret=NULL;
+
+	ret=(BIO *)Malloc(sizeof(BIO));
+	if (ret == NULL)
+		{
+		BIOerr(BIO_F_BIO_NEW,ERR_R_MALLOC_FAILURE);
+		return(NULL);
+		}
+	if (!BIO_set(ret,method))
+		{
+		Free(ret);
+		ret=NULL;
+		}
+	return(ret);
+	}
+
+int BIO_set(bio,method)
+BIO *bio;
+BIO_METHOD *method;
+	{
+	bio->method=method;
+	bio->callback=NULL;
+	bio->cb_arg=NULL;
+	bio->init=0;
+	bio->shutdown=1;
+	bio->num=0;
+	bio->flags=0;
+	bio->retry_reason=0;
+	bio->ptr=NULL;
+	bio->prev_bio=NULL;
+	bio->next_bio=NULL;
+	bio->references=1;
+	bio->num_read=0L;
+	bio->num_write=0L;
+	if (method->create != NULL)
+		if (!method->create(bio))
+			return(0);
+	return(1);
+	}
+
+int BIO_free(a)
+BIO *a;
+	{
+	int ret=0,i;
+
+	if (a == NULL) return(0);
+
+	i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_BIO);
+
+        if (i > 0) return(1);
+#ifdef REF_CHECK
+	if (i < 0)
+		{
+		fprintf(stderr,"BIO_free, bad reference count\n");
+		abort();
+		}
+#endif
+	if ((a->callback != NULL) &&
+		((i=(int)a->callback(a,BIO_CB_FREE,NULL,0,0L,1L)) <= 0))
+			return(i);
+
+	if ((a->method == NULL) || (a->method->destroy == NULL)) return(1);
+	ret=a->method->destroy(a);
+	Free(a);
+	return(1);
+	}
+
+int BIO_read(b,out,outl)
+BIO *b;
+char *out;
+int outl;
+	{
+	int i;
+
+	if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL))
+		{
+		BIOerr(BIO_F_BIO_READ,BIO_R_UNSUPPORTED_METHOD);
+		return(-2);
+		}
+
+	if ((b->callback != NULL) &&
+		((i=(int)b->callback(b,BIO_CB_READ,out,outl,0L,1L)) <= 0))
+			return(i);
+
+	if (!b->init)
+		{
+		BIOerr(BIO_F_BIO_READ,BIO_R_UNINITALISED);
+		return(-2);
+		}
+
+	i=b->method->bread(b,out,outl);
+	if (i > 0) b->num_read+=(unsigned long)i;
+
+	if (b->callback != NULL)
+		i=(int)b->callback(b,BIO_CB_READ|BIO_CB_RETURN,out,outl,
+			0L,(long)i);
+	return(i);
+	}
+
+int BIO_write(b,in,inl)
+BIO *b;
+char *in;
+int inl;
+	{
+	int i;
+
+	if ((b == NULL) || (b->method == NULL) || (b->method->bwrite == NULL))
+		{
+		BIOerr(BIO_F_BIO_WRITE,BIO_R_UNSUPPORTED_METHOD);
+		return(-2);
+		}
+
+	if ((b->callback != NULL) &&
+		((i=(int)b->callback(b,BIO_CB_WRITE,in,inl,0L,1L)) <= 0))
+			return(i);
+
+	if (!b->init)
+		{
+		BIOerr(BIO_F_BIO_WRITE,BIO_R_UNINITALISED);
+		return(-2);
+		}
+
+	i=b->method->bwrite(b,in,inl);
+	if (i > 0) b->num_write+=(unsigned long)i;
+
+	if (b->callback != NULL)
+		i=(int)b->callback(b,BIO_CB_WRITE|BIO_CB_RETURN,in,inl,
+			0L,(long)i);
+	return(i);
+	}
+
+int BIO_puts(b,in)
+BIO *b;
+char *in;
+	{
+	int i;
+
+	if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL))
+		{
+		BIOerr(BIO_F_BIO_PUTS,BIO_R_UNSUPPORTED_METHOD);
+		return(-2);
+		}
+
+	if ((b->callback != NULL) &&
+		((i=(int)b->callback(b,BIO_CB_PUTS,in,0,0L,1L)) <= 0))
+			return(i);
+
+	if (!b->init)
+		{
+		BIOerr(BIO_F_BIO_PUTS,BIO_R_UNINITALISED);
+		return(-2);
+		}
+
+	i=b->method->bputs(b,in);
+
+	if (b->callback != NULL)
+		i=(int)b->callback(b,BIO_CB_PUTS|BIO_CB_RETURN,in,0,
+			0L,(long)i);
+	return(i);
+	}
+
+int BIO_gets(b,in,inl)
+BIO *b;
+char *in;
+int inl;
+	{
+	int i;
+
+	if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL))
+		{
+		BIOerr(BIO_F_BIO_GETS,BIO_R_UNSUPPORTED_METHOD);
+		return(-2);
+		}
+
+	if ((b->callback != NULL) &&
+		((i=(int)b->callback(b,BIO_CB_GETS,in,inl,0L,1L)) <= 0))
+			return(i);
+
+	if (!b->init)
+		{
+		BIOerr(BIO_F_BIO_GETS,BIO_R_UNINITALISED);
+		return(-2);
+		}
+
+	i=b->method->bgets(b,in,inl);
+
+	if (b->callback != NULL)
+		i=(int)b->callback(b,BIO_CB_GETS|BIO_CB_RETURN,in,inl,
+			0L,(long)i);
+	return(i);
+	}
+
+long BIO_ctrl_int(b,cmd,larg,iarg)
+BIO *b;
+int cmd;
+long larg;
+int iarg;
+	{
+	int i;
+
+	i=iarg;
+	return(BIO_ctrl(b,cmd,larg,(char *)&i));
+	}
+
+long BIO_ctrl(b,cmd,larg,parg)
+BIO *b;
+int cmd;
+long larg;
+char *parg;
+	{
+	long ret;
+
+	if (b == NULL) return(0);
+
+	if ((b->method == NULL) || (b->method->ctrl == NULL))
+		{
+		BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD);
+		return(-2);
+		}
+
+	if ((b->callback != NULL) &&
+		((ret=b->callback(b,BIO_CB_CTRL,parg,cmd,larg,1L)) <= 0))
+		return(ret);
+
+	ret=b->method->ctrl(b,cmd,larg,parg);
+
+	if (b->callback != NULL)
+		ret=b->callback(b,BIO_CB_CTRL|BIO_CB_RETURN,parg,cmd,
+			larg,ret);
+	return(ret);
+	}
+
+/* put the 'bio' on the end of b's list of operators */
+BIO *BIO_push(b,bio)
+BIO *b,*bio;
+	{
+	BIO *lb;
+
+	if (b == NULL) return(bio);
+	lb=b;
+	while (lb->next_bio != NULL)
+		lb=lb->next_bio;
+	lb->next_bio=bio;
+	if (bio != NULL)
+		bio->prev_bio=lb;
+	BIO_ctrl(b,BIO_CTRL_PUSH,0,NULL);
+	return(b);
+	}
+
+/* Remove the first and return the rest */
+BIO *BIO_pop(b)
+BIO *b;
+	{
+	BIO *ret;
+
+	if (b == NULL) return(NULL);
+	ret=b->next_bio;
+
+	if (b->prev_bio != NULL)
+		b->prev_bio->next_bio=b->next_bio;
+	if (b->next_bio != NULL)
+		b->next_bio->prev_bio=b->prev_bio;
+
+	b->next_bio=NULL;
+	b->prev_bio=NULL;
+	BIO_ctrl(b,BIO_CTRL_POP,0,NULL);
+	return(ret);
+	}
+
+BIO *BIO_get_retry_BIO(bio,reason)
+BIO *bio;
+int *reason;
+	{
+	BIO *b,*last;
+
+	b=last=bio;
+	for (;;)
+		{
+		if (!BIO_should_retry(b)) break;
+		last=b;
+		b=b->next_bio;
+		if (b == NULL) break;
+		}
+	if (reason != NULL) *reason=last->retry_reason;
+	return(last);
+	}
+
+int BIO_get_retry_reason(bio)
+BIO *bio;
+	{
+	return(bio->retry_reason);
+	}
+
+BIO *BIO_find_type(bio,type)
+BIO *bio;
+int type;
+	{
+	int mt,mask;
+
+	mask=type&0xff;
+	do	{
+		if (bio->method != NULL)
+			{
+			mt=bio->method->type;
+
+			if (!mask)
+				{
+				if (mt & type) return(bio);
+				}
+			else if (mt == type)
+				return(bio);
+			}
+		bio=bio->next_bio;
+		} while (bio != NULL);
+	return(NULL);
+	}
+
+void BIO_free_all(bio)
+BIO *bio;
+	{
+	BIO *b;
+	int ref;
+
+	while (bio != NULL)
+		{
+		b=bio;
+		ref=b->references;
+		bio=bio->next_bio;
+		BIO_free(b);
+		/* Since ref count > 1, don't free anyone else. */
+		if (ref > 1) break;
+		}
+	}
+
+BIO *BIO_dup_chain(in)
+BIO *in;
+	{
+	BIO *ret=NULL,*eoc=NULL,*bio,*new;
+
+	for (bio=in; bio != NULL; bio=bio->next_bio)
+		{
+		if ((new=BIO_new(bio->method)) == NULL) goto err;
+		new->callback=bio->callback;
+		new->cb_arg=bio->cb_arg;
+		new->init=bio->init;
+		new->shutdown=bio->shutdown;
+		new->flags=bio->flags;
+
+		/* This will let SSL_s_sock() work with stdin/stdout */
+		new->num=bio->num;
+
+		if (!BIO_dup_state(bio,(char *)new))
+			{
+			BIO_free(new);
+			goto err;
+			}
+		if (ret == NULL)
+			{
+			eoc=new;
+			ret=eoc;
+			}
+		else
+			{
+			BIO_push(eoc,new);
+			eoc=new;
+			}
+		}
+	return(ret);
+err:
+	if (ret != NULL)
+		BIO_free(ret);
+	return(NULL);	
+	}
+
+void BIO_copy_next_retry(b)
+BIO *b;
+	{
+	BIO_set_flags(b,BIO_get_retry_flags(b->next_bio));
+	b->retry_reason=b->next_bio->retry_reason;
+	}
+