benign buffer overflow fix (ITS#1964)

servers/slapd/at.c

@@ -338,7 +338,6 @@ at_add(
 			ldap_memfree( at->at_syntax_oid );
 			at->at_syntax_oid = oid;
 		}
-
 	}
 
 	if ( at->at_names && at->at_names[0] ) {

servers/slapd/lock.c

@@ -28,7 +28,8 @@ lock_fopen( const char *fname, const char *type, FILE **lfp )
 	char	buf[MAXPATHLEN];
 
 	/* open the lock file */
-	strcpy(lutil_strcopy( buf, fname ), ".lock" );
+	snprintf( buf, sizeof buf, "%s.lock", fname );
+
 	if ( (*lfp = fopen( buf, "w" )) == NULL ) {
 #ifdef NEW_LOGGING
 		LDAP_LOG( OPERATION, ERR, 

servers/slurpd/lock.c

@@ -47,8 +47,8 @@ lock_fopen(
 	char	buf[MAXPATHLEN];
 
 	/* open the lock file */
-	strcpy( buf, fname );
-	strcat( buf, ".lock" );
+	snprintf( buf, sizeof buf, "%s.lock", fname );
+
 	if ( (*lfp = fopen( buf, "w" )) == NULL ) {
 #ifdef NEW_LOGGING
 		LDAP_LOG ( SLURPD, ERR, "lock_fopen: "