feat: init

session/storage/session_key.rs

@@ -0,0 +1,28 @@
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct SessionKey(pub String);
+
+impl TryFrom<String> for SessionKey {
+    type Error = &'static str;
+
+    fn try_from(val: String) -> Result<Self, Self::Error> {
+        if val.len() > 4064 {
+            return Err("session key exceeds 4064 bytes");
+        }
+        if val.contains('\0') {
+            return Err("session key contains null bytes");
+        }
+        Ok(SessionKey(val))
+    }
+}
+
+impl AsRef<str> for SessionKey {
+    fn as_ref(&self) -> &str {
+        &self.0
+    }
+}
+
+impl From<SessionKey> for String {
+    fn from(key: SessionKey) -> Self {
+        key.0
+    }
+}