From 00c67098964c075254f7bda38380af1d6ae8fdb7 Mon Sep 17 00:00:00 2001
From: Pierangelo Masarati <ando@openldap.org>
Date: Sat, 28 May 2005 14:30:43 +0000
Subject: [PATCH] expose macro(s) to produce string representations of
 arbitrary precision counters

---
 servers/slapd/proto-slap.h | 54 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/servers/slapd/proto-slap.h b/servers/slapd/proto-slap.h
index 12bce17bd1..f5ed80742f 100644
--- a/servers/slapd/proto-slap.h
+++ b/servers/slapd/proto-slap.h
@@ -1572,6 +1572,60 @@ LDAP_SLAPD_F (int) fe_op_unbind LDAP_P((Operation *op, SlapReply *rs));
 #endif
 LDAP_SLAPD_F (int) fe_extended LDAP_P((Operation *op, SlapReply *rs));
 
+/* NOTE: this macro assumes that bv has been allocated
+ * by ber_* malloc functions or is { 0L, NULL } */
+#if defined(HAVE_BIGNUM)
+#define UI2BVX(bv,ui,ctx) \
+	do { \
+		char		*val; \
+		ber_len_t	len; \
+		val = BN_bn2dec(ui); \
+		if (val) { \
+			len = strlen(val); \
+			if ( len > (bv)->bv_len ) { \
+				(bv)->bv_val = ber_memrealloc_x( (bv)->bv_val, len + 1, (ctx) ); \
+			} \
+			AC_MEMCPY((bv)->bv_val, val, len + 1); \
+			(bv)->bv_len = len; \
+			OPENSSL_free(val); \
+		} else { \
+			ber_memfree_x( (bv)->bv_val, (ctx) ); \
+			BER_BVZERO( (bv) ); \
+		} \
+	} while ( 0 )
+#elif defined(HAVE_GMP)
+/* NOTE: according to the documentation, the result 
+ * of mpz_sizeinbase() can exceed the length of the
+ * string representation of the number by 1
+ */
+#define UI2BVX(bv,ui,ctx) \
+	do { \
+		ber_len_t	len = mpz_sizeinbase( (ui), 10 ); \
+		if ( len > (bv)->bv_len ) { \
+			(bv)->bv_val = ber_memrealloc_x( (bv)->bv_val, len + 1, (ctx) ); \
+		} \
+		(void)mpz_get_str( (bv)->bv_val, 10, (ui) ); \
+		if ( (bv)->bv_val[ len - 1 ] == '\0' ) { \
+			len--; \
+		} \
+		(bv)->bv_len = len; \
+	} while ( 0 )
+#else /* ! HAVE_BIGNUM && ! HAVE_GMP */
+#define UI2BVX(bv,ui,ctx) \
+	do { \
+		char		buf[] = "+9223372036854775807L"; \
+		ber_len_t	len; \
+		snprintf( buf, sizeof( buf ), "%lu", (ui) ); \
+		len = strlen( buf ); \
+		if ( len > (bv)->bv_len ) { \
+			(bv)->bv_val = ber_memrealloc_x( (bv)->bv_val, len + 1, (ctx) ); \
+		} \
+		AC_MEMCPY( (bv)->bv_val, buf, len + 1 ); \
+	} while ( 0 )
+#endif /* ! HAVE_GMP */
+
+#define UI2BV(bv,ui)	UI2BVX(bv,ui,NULL)
+
 LDAP_END_DECL
 
 #endif /* PROTO_SLAP_H */
-- 
2.39.5