Import of old SSLeay release: SSLeay 0.8.1b

1 files changed, 200 insertions, 0 deletions

diff --git a/crypto/asn1/a_d2i_fp.c b/crypto/asn1/a_d2i_fp.c
new file mode 100644
index 0000000000..5c9c9cf09b
--- /dev/null
+++ b/crypto/asn1/a_d2i_fp.c
@@ -0,0 +1,200 @@
+/* crypto/asn1/a_d2i_fp.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 "cryptlib.h"
+#include "buffer.h"
+#include "asn1_mac.h"
+
+#define HEADER_SIZE   8
+
+#ifndef WIN16
+char *ASN1_d2i_fp(xnew,d2i,in,x)
+char *(*xnew)();
+char *(*d2i)();
+FILE *in;
+unsigned char **x;
+        {
+        BIO *b;
+        char *ret;
+
+        if ((b=BIO_new(BIO_s_file())) == NULL)
+		{
+		ASN1err(ASN1_F_ASN1_D2I_FP,ERR_R_BUF_LIB);
+                return(NULL);
+		}
+        BIO_set_fp(b,in,BIO_NOCLOSE);
+        ret=ASN1_d2i_bio(xnew,d2i,b,x);
+        BIO_free(b);
+        return(ret);
+        }
+#endif
+
+char *ASN1_d2i_bio(xnew,d2i,in,x)
+char *(*xnew)();
+char *(*d2i)();
+BIO *in;
+unsigned char **x;
+	{
+	BUF_MEM *b;
+	unsigned char *p;
+	int i;
+	char *ret=NULL;
+	ASN1_CTX c;
+	int want=HEADER_SIZE;
+	int eos=0;
+	int off=0;
+	int len=0;
+
+	b=BUF_MEM_new();
+	if (b == NULL)
+		{
+		ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
+		return(NULL);
+		}
+
+	for (;;)
+		{
+		if (want >= (len-off))
+			{
+			want-=(len-off);
+
+			if (!BUF_MEM_grow(b,len+want))
+				{
+				ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
+				goto err;
+				}
+			i=BIO_read(in,&(b->data[len]),want);
+			if ((i < 0) && ((len-off) == 0))
+				{
+				ASN1err(ASN1_F_ASN1_D2I_BIO,ASN1_R_NOT_ENOUGH_DATA);
+				goto err;
+				}
+			if (i > 0)
+				len+=i;
+			}
+		/* else data already loaded */
+
+		p=(unsigned char *)&(b->data[off]);
+		c.p=p;
+		c.inf=ASN1_get_object(&(c.p),&(c.slen),&(c.tag),&(c.xclass),
+			len-off);
+		if (c.inf & 0x80)
+			{
+			unsigned long e;
+
+			e=ERR_GET_REASON(ERR_peek_error());
+			if (e != ASN1_R_TOO_LONG)
+				goto err;
+			else
+				ERR_get_error(); /* clear error */
+			}
+		i=c.p-p;/* header length */
+		off+=i;	/* end of data */
+
+		if (c.inf & 1)
+			{
+			/* no data body so go round again */
+			eos++;
+			want=HEADER_SIZE;
+			}
+		else if (eos && (c.slen == 0) && (c.tag == V_ASN1_EOC))
+			{
+			/* eos value, so go back and read another header */
+			eos--;
+			if (eos <= 0)
+				break;
+			else
+				want=HEADER_SIZE;
+			}
+		else 
+			{
+			/* suck in c.slen bytes of data */
+			want=(int)c.slen;
+			if (want > (len-off))
+				{
+				want-=(len-off);
+				if (!BUF_MEM_grow(b,len+want))
+					{
+					ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
+					goto err;
+					}
+				i=BIO_read(in,&(b->data[len]),want);
+				if (i <= 0)
+					{
+					ASN1err(ASN1_F_ASN1_D2I_BIO,ASN1_R_NOT_ENOUGH_DATA);
+					goto err;
+					}
+				len+=i;
+				}
+			off+=(int)c.slen;
+			if (eos <= 0)
+				{
+				break;
+				}
+			else
+				want=HEADER_SIZE;
+			}
+		}
+
+	p=(unsigned char *)b->data;
+	ret=d2i(x,&p,off);
+err:
+	if (b != NULL) BUF_MEM_free(b);
+	return(ret);
+	}