1 files changed, 47 insertions, 0 deletions
diff --git a/crates/smtp/src/scripts/functions/misc.rs b/crates/smtp/src/scripts/functions/misc.rs
new file mode 100644
index 00000000..a211dcc7
--- /dev/null
+++ b/crates/smtp/src/scripts/functions/misc.rs
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2023 Stalwart Labs Ltd.
+ *
+ * This file is part of Stalwart Mail Server.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ * in the LICENSE file at the top-level directory of this distribution.
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * You can be released from the requirements of the AGPLv3 license by
+ * purchasing a commercial license. Please contact licensing@stalw.art
+ * for more details.
+*/
+
+use sieve::{runtime::Variable, Context};
+
+pub fn fn_is_empty<'x>(_: &'x Context<'x>, v: Vec<Variable<'x>>) -> Variable<'x> {
+    match &v[0] {
+        Variable::String(s) => s.is_empty(),
+        Variable::StringRef(s) => s.is_empty(),
+        Variable::Integer(_) | Variable::Float(_) => false,
+        Variable::Array(a) => a.is_empty(),
+        Variable::ArrayRef(a) => a.is_empty(),
+    }
+    .into()
+}
+
+pub fn fn_is_ip_addr<'x>(_: &'x Context<'x>, v: Vec<Variable<'x>>) -> Variable<'x> {
+    v[0].to_cow().parse::<std::net::IpAddr>().is_ok().into()
+}
+
+pub fn fn_is_var_names<'x>(ctx: &'x Context<'x>, _: Vec<Variable<'x>>) -> Variable<'x> {
+    Variable::Array(
+        ctx.global_variable_names()
+            .map(|v| Variable::from(v.to_string()))
+            .collect(),
+    )
+}