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-rw-r--r--libraries/librewrite/params.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/libraries/librewrite/params.c b/libraries/librewrite/params.c
new file mode 100644
index 0000000..1a7f555
--- /dev/null
+++ b/libraries/librewrite/params.c
@@ -0,0 +1,149 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2021 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 REWRITE_SUCCESS;
+}
+
+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
+)
+{
+ int count;
+
+ assert( info != NULL );
+
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+ ldap_pvt_thread_rdwr_wlock( &info->li_params_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+
+ count = 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;
+}
+