From 2f877b48b197f5478db44a4faff7d7be78281ab0 Mon Sep 17 00:00:00 2001
From: Pierangelo Masarati <ando@openldap.org>
Date: Thu, 21 Apr 2005 03:40:50 +0000
Subject: [PATCH] introduce ber_bvreplace()

---
 include/lber.h             |  4 ++++
 include/lber_pvt.h         |  4 ++++
 libraries/liblber/memory.c | 25 +++++++++++++++++++++++++
 3 files changed, 33 insertions(+)

diff --git a/include/lber.h b/include/lber.h
index c3c0da6485..93eebc3e48 100644
--- a/include/lber.h
+++ b/include/lber.h
@@ -597,6 +597,10 @@ LBER_F( char * )
 ber_strdup LDAP_P((
 	LDAP_CONST char * ));
 
+LBER_F( struct berval * )
+ber_bvreplace LDAP_P((
+	struct berval *dst, LDAP_CONST struct berval *src ));
+
 LBER_F( void )
 ber_bvarray_free LDAP_P(( BerVarray p ));
 
diff --git a/include/lber_pvt.h b/include/lber_pvt.h
index a23f33f9c3..6fd557d230 100644
--- a/include/lber_pvt.h
+++ b/include/lber_pvt.h
@@ -135,6 +135,10 @@ LBER_F( char * )
 ber_strdup_x LDAP_P((
 	LDAP_CONST char *, void *ctx ));
 
+LBER_F( struct berval * )
+ber_bvreplace_x LDAP_P((
+	struct berval *dst, LDAP_CONST struct berval *src, void *ctx ));
+
 LBER_F( void )
 ber_bvarray_free_x LDAP_P(( BerVarray p, void *ctx ));
 
diff --git a/libraries/liblber/memory.c b/libraries/liblber/memory.c
index ea96e2d6ce..5b4089fec2 100644
--- a/libraries/liblber/memory.c
+++ b/libraries/liblber/memory.c
@@ -713,6 +713,31 @@ ber_strndup( LDAP_CONST char *s, ber_len_t l )
 	return ber_strndup_x( s, l, NULL );
 }
 
+/*
+ * dst is resized as required by src and the value of src is copied into dst
+ * dst->bv_val must be NULL (and dst->bv_len must be 0), or it must be
+ * alloc'ed with the context ctx
+ */
+struct berval *
+ber_bvreplace_x( struct berval *dst, LDAP_CONST struct berval *src, void *ctx )
+{
+	assert( dst != NULL );
+
+	if ( dst->bv_len < src->bv_len ) {
+		dst->bv_val = ber_memrealloc_x( dst->bv_val, src->bv_len + 1, ctx );
+	}
+
+	AC_MEMCPY( dst->bv_val, src->bv_val, src->bv_len + 1 );
+
+	return dst;
+}
+
+struct berval *
+ber_bvreplace( struct berval *dst, LDAP_CONST struct berval *src )
+{
+	return ber_bvreplace_x( dst, src, NULL );
+}
+
 void
 ber_bvarray_free_x( BerVarray a, void *ctx )
 {