X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;f=crypto%2Fasn1%2Fa_d2i_fp.c;h=e409c273f266560b72a2f649ef74a84d9400e818;hb=6a50d0a422a7491c98df37772e37fede2135770d;hp=5c9c9cf09b356a9f2d2e24c114f0508aca5a2dcd;hpb=b7896b3cb86d80206af14a14d69b0717786f2729;p=openssl.git

diff --git a/crypto/asn1/a_d2i_fp.c b/crypto/asn1/a_d2i_fp.c
index 5c9c9cf09b..e409c273f2 100644
--- a/crypto/asn1/a_d2i_fp.c
+++ b/crypto/asn1/a_d2i_fp.c
@@ -1,5 +1,5 @@
 /* crypto/asn1/a_d2i_fp.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
@@ -58,20 +58,18 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "buffer.h"
-#include "asn1_mac.h"
+#include <openssl/buffer.h>
+#include <openssl/asn1_mac.h>
 
-#define HEADER_SIZE   8
+static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb);
+
+#ifndef NO_OLD_ASN1
+#ifndef OPENSSL_NO_FP_API
 
-#ifndef WIN16
-char *ASN1_d2i_fp(xnew,d2i,in,x)
-char *(*xnew)();
-char *(*d2i)();
-FILE *in;
-unsigned char **x;
+void *ASN1_d2i_fp(void *(*xnew)(void), d2i_of_void *d2i, FILE *in, void **x)
         {
         BIO *b;
-        char *ret;
+        void *ret;
 
         if ((b=BIO_new(BIO_s_file())) == NULL)
 		{
@@ -85,36 +83,93 @@ unsigned char **x;
         }
 #endif
 
-char *ASN1_d2i_bio(xnew,d2i,in,x)
-char *(*xnew)();
-char *(*d2i)();
-BIO *in;
-unsigned char **x;
+void *ASN1_d2i_bio(void *(*xnew)(void), d2i_of_void *d2i, BIO *in, void **x)
+	{
+	BUF_MEM *b = NULL;
+	const unsigned char *p;
+	void *ret=NULL;
+	int len;
+
+	len = asn1_d2i_read_bio(in, &b);
+	if(len < 0) goto err;
+
+	p=(unsigned char *)b->data;
+	ret=d2i(x,&p,len);
+err:
+	if (b != NULL) BUF_MEM_free(b);
+	return(ret);
+	}
+
+#endif
+
+void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x)
+	{
+	BUF_MEM *b = NULL;
+	const unsigned char *p;
+	void *ret=NULL;
+	int len;
+
+	len = asn1_d2i_read_bio(in, &b);
+	if(len < 0) goto err;
+
+	p=(const unsigned char *)b->data;
+	ret=ASN1_item_d2i(x,&p,len, it);
+err:
+	if (b != NULL) BUF_MEM_free(b);
+	return(ret);
+	}
+
+#ifndef OPENSSL_NO_FP_API
+void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *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_item_d2i_bio(it,b,x);
+        BIO_free(b);
+        return(ret);
+        }
+#endif
+
+#define HEADER_SIZE   8
+static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
 	{
 	BUF_MEM *b;
 	unsigned char *p;
 	int i;
-	char *ret=NULL;
-	ASN1_CTX c;
+	int ret=-1;
+	ASN1_const_CTX c;
 	int want=HEADER_SIZE;
 	int eos=0;
+#if defined(__GNUC__) && defined(__ia64)
+	/* pathetic compiler bug in all known versions as of Nov. 2002 */
+	long off=0;
+#else
 	int off=0;
+#endif
 	int len=0;
 
 	b=BUF_MEM_new();
 	if (b == NULL)
 		{
 		ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
-		return(NULL);
+		return -1;
 		}
 
+	ERR_clear_error();
 	for (;;)
 		{
 		if (want >= (len-off))
 			{
 			want-=(len-off);
 
-			if (!BUF_MEM_grow(b,len+want))
+			if (!BUF_MEM_grow_clean(b,len+want))
 				{
 				ASN1err(ASN1_F_ASN1_D2I_BIO,ERR_R_MALLOC_FAILURE);
 				goto err;
@@ -142,7 +197,7 @@ unsigned char **x;
 			if (e != ASN1_R_TOO_LONG)
 				goto err;
 			else
-				ERR_get_error(); /* clear error */
+				ERR_clear_error(); /* clear error */
 			}
 		i=c.p-p;/* header length */
 		off+=i;	/* end of data */
@@ -169,18 +224,23 @@ unsigned char **x;
 			if (want > (len-off))
 				{
 				want-=(len-off);
-				if (!BUF_MEM_grow(b,len+want))
+				if (!BUF_MEM_grow_clean(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)
+				while (want > 0)
 					{
-					ASN1err(ASN1_F_ASN1_D2I_BIO,ASN1_R_NOT_ENOUGH_DATA);
-					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;
+					want -= i;
 					}
-				len+=i;
 				}
 			off+=(int)c.slen;
 			if (eos <= 0)
@@ -192,8 +252,8 @@ unsigned char **x;
 			}
 		}
 
-	p=(unsigned char *)b->data;
-	ret=d2i(x,&p,off);
+	*pb = b;
+	return off;
 err:
 	if (b != NULL) BUF_MEM_free(b);
 	return(ret);