1 files changed, 26 insertions, 2 deletions

diff --git a/src/lib/libcrypto/asn1/a_dup.c b/src/lib/libcrypto/asn1/a_dup.c
index c3bda58a5d..58a017884c 100644
--- a/src/lib/libcrypto/asn1/a_dup.c
+++ b/src/lib/libcrypto/asn1/a_dup.c
@@ -58,9 +58,9 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include <openssl/asn1_mac.h>
+#include <openssl/asn1.h>
 
-#define READ_CHUNK   2048
+#ifndef NO_OLD_ASN1
 
 char *ASN1_dup(int (*i2d)(), char *(*d2i)(), char *x)
         {
@@ -81,3 +81,27 @@ char *ASN1_dup(int (*i2d)(), char *(*d2i)(), char *x)
         OPENSSL_free(b);
         return(ret);
         }
+
+#endif
+
+/* ASN1_ITEM version of dup: this follows the model above except we don't need
+ * to allocate the buffer. At some point this could be rewritten to directly dup
+ * the underlying structure instead of doing and encode and decode.
+ */
+
+void *ASN1_item_dup(const ASN1_ITEM *it, void *x)
+        {
+        unsigned char *b = NULL, *p;
+        long i;
+        void *ret;
+
+        if (x == NULL) return(NULL);
+
+        i=ASN1_item_i2d(x,&b,it);
+        if (b == NULL)
+                { ASN1err(ASN1_F_ASN1_DUP,ERR_R_MALLOC_FAILURE); return(NULL); }
+        p= b;
+        ret=ASN1_item_d2i(NULL,&p,i, it);
+        OPENSSL_free(b);
+        return(ret);
+        }