1 files changed, 147 insertions, 0 deletions
diff --git a/libraries/librewrite/params.c b/libraries/librewrite/params.c
new file mode 100644
index 0000000..5da6e04
--- /dev/null
+++ b/libraries/librewrite/params.c
@@ -0,0 +1,147 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENT:
+ * This work was initially developed by Pierangelo Masarati for
+ * inclusion in OpenLDAP Software.
+ */
+
+#include <portable.h>
+
+#include "rewrite-int.h"
+
+/*
+ * Defines and inits a variable with global scope
+ */
+int
+rewrite_param_set(
+		struct rewrite_info *info,
+		const char *name,
+		const char *value
+)
+{
+	struct rewrite_var *var;
+	int rc = REWRITE_SUCCESS;
+
+	assert( info != NULL );
+	assert( name != NULL );
+	assert( value != NULL );
+
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+	ldap_pvt_thread_rdwr_wlock( &info->li_params_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+
+	var = rewrite_var_find( info->li_params, name );
+	if ( var != NULL ) {
+		assert( var->lv_value.bv_val != NULL );
+		free( var->lv_value.bv_val );
+		var->lv_value.bv_val = strdup( value );
+		var->lv_value.bv_len = strlen( value );
+
+	} else {
+		var = rewrite_var_insert( &info->li_params, name, value );
+	}
+
+	if ( var == NULL || var->lv_value.bv_val == NULL ) {
+		rc = REWRITE_ERR;
+	}
+	
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+	ldap_pvt_thread_rdwr_wunlock( &info->li_params_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+
+	return rc;
+}
+
+/*
+ * Gets a var with global scope
+ */
+int
+rewrite_param_get(
+		struct rewrite_info *info,
+		const char *name,
+		struct berval *value
+)
+{
+	struct rewrite_var *var;
+	int rc = REWRITE_SUCCESS;
+
+	assert( info != NULL );
+	assert( name != NULL );
+	assert( value != NULL );
+
+	value->bv_val = NULL;
+	value->bv_len = 0;
+	
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+	ldap_pvt_thread_rdwr_rlock( &info->li_params_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+	
+	var = rewrite_var_find( info->li_params, name );
+	if ( var != NULL ) {
+		value->bv_val = strdup( var->lv_value.bv_val );
+		value->bv_len = var->lv_value.bv_len;
+	}
+
+	if ( var == NULL || value->bv_val == NULL ) {
+		rc = REWRITE_ERR;
+	}
+	
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+	ldap_pvt_thread_rdwr_runlock( &info->li_params_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+
+	return rc;
+}
+
+static void
+rewrite_param_free(
+		void *tmp
+)
+{
+	struct rewrite_var *var = ( struct rewrite_var * )tmp;
+	assert( var != NULL );
+
+	assert( var->lv_name != NULL );
+	assert( var->lv_value.bv_val != NULL );
+
+	free( var->lv_name );
+	free( var->lv_value.bv_val );
+	free( var );
+}
+
+/*
+ * Destroys the parameter tree
+ */
+int
+rewrite_param_destroy(
+		struct rewrite_info *info
+)
+{
+	assert( info != NULL );
+	
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+	ldap_pvt_thread_rdwr_wlock( &info->li_params_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+	
+	ldap_avl_free( info->li_params, rewrite_param_free );
+	info->li_params = NULL;
+
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+	ldap_pvt_thread_rdwr_wunlock( &info->li_params_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+
+	return REWRITE_SUCCESS;
+}
+