diff --git a/Cargo.toml b/Cargo.toml
index cb708a7..c2aa92d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,8 +11,8 @@ license = "GPL-3.0-or-later"
 repository = "https://git.candifloss.cc/candifloss/ldap-kit.git"
 
 [workspace.dependencies]
-anyhow = "1.0.102"
-clap = { version = "4.6.1", features = ["derive"] }
+anyhow = "1.0.104"
+clap = { version = "4.6.4", features = ["derive"] }
 ldap3 = "0.12.1"
-serde = { version = "1.0.228", features = ["derive"] }
-toml = "1.1.2"
+serde = { version = "1.0.229", features = ["derive"] }
+toml = "1.1.4"
diff --git a/crates/ldap/Cargo.toml b/crates/ldap/Cargo.toml
index ba5d159..9c9ad6e 100644
--- a/crates/ldap/Cargo.toml
+++ b/crates/ldap/Cargo.toml
@@ -6,3 +6,6 @@ license.workspace = true
 repository.workspace = true
 
 [dependencies]
+anyhow.workspace = true
+config = { version = "0.1.0", path = "../config" }
+ldap3.workspace = true
diff --git a/crates/ldap/src/client.rs b/crates/ldap/src/client.rs
new file mode 100644
index 0000000..e69de29
diff --git a/crates/ldap/src/lib.rs b/crates/ldap/src/lib.rs
index b93cf3f..1227be5 100644
--- a/crates/ldap/src/lib.rs
+++ b/crates/ldap/src/lib.rs
@@ -1,14 +1,5 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
-}
+mod client;
+mod user;
 
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
-}
+//pub use client::LdapClient;
+pub use user::User;
\ No newline at end of file
diff --git a/crates/ldap/src/user.rs b/crates/ldap/src/user.rs
new file mode 100644
index 0000000..295d021
--- /dev/null
+++ b/crates/ldap/src/user.rs
@@ -0,0 +1,31 @@
+//! LDAP user.
+
+use std::collections::HashMap;
+
+/// LDAP user entry.
+#[derive(Debug, Clone)]
+pub struct User {
+    /// Distinguished Name.
+    pub dn: String,
+
+    /// LDAP attributes.
+    ///
+    /// Keys are attribute names.
+    /// Values contain all values of that attribute.
+    pub attributes: HashMap<String, Vec<String>>,
+}
+
+impl User {
+    /// Return the first value of an attribute.
+    pub fn attribute(&self, name: &str) -> Option<&str> {
+        self.attributes
+            .get(name)
+            .and_then(|values| values.first())
+            .map(String::as_str)
+    }
+
+    /// Check whether an attribute exists.
+    pub fn has_attribute(&self, name: &str) -> bool {
+        self.attributes.contains_key(name)
+    }
+}
\ No newline at end of file