(refs #78)Implementing LDAP authentication.

src/main/scala/util/LDAPUtil.scala

@@ -0,0 +1,49 @@
+package util
+
+import service.SystemSettingsService.Ldap
+import com.novell.ldap.LDAPConnection
+
+/**
+ * Utility for LDAP authentication.
+ */
+object LDAPUtil extends App {
+
+  /**
+   * Try authentication by LDAP using given configuration.
+   * Returns Right(mailAddress) if authentication is successful, otherwise  Left(errorMessage).
+   */
+  def authenticate(ldapSettings: Ldap, userName: String, password: String): Either[String, String] = {
+    var conn: LDAPConnection = null
+    try {
+      conn = new LDAPConnection()
+      conn.connect(ldapSettings.host, ldapSettings.port)
+      val userDN = ldapSettings.userNameAttribute + "=" + userName + ",ou=Users," + ldapSettings.baseDN
+      conn.bind(3, userDN, password.getBytes)
+      if(conn.isBound){
+        val results = conn.search(userDN, LDAPConnection.SCOPE_BASE, "", Array[String](ldapSettings.mailAttribute), false)
+        var mailAddress: String = null
+        while(results.hasMore){
+          mailAddress = results.next.getAttribute(ldapSettings.mailAttribute).getStringValue
+        }
+        if(mailAddress != null){
+          Right(mailAddress)
+        } else {
+          Left("Can't find mail address.")
+        }
+      } else {
+        Left("Authentication failed.")
+      }
+    } catch {
+      case ex: Exception => Left(ex.getMessage)
+    } finally {
+      if(conn != null){
+        conn.disconnect()
+      }
+    }
+  }
+
+//  val ldapSettings = Ldap("192.168.159.128", 389, "dc=unix-power,dc=net", "uid", "mail")
+//
+//  println(authenticate(ldapSettings, "tanaka", "password"))
+
+}