63 lines
1.8 KiB
Crystal
63 lines
1.8 KiB
Crystal
# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
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# Copyright (C) 2022 Dominic Grimm
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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require "ldap"
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require "socket"
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require "ldap_escape"
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require "pool/connection"
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require "./ldap/*"
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module Backend
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# Provides LDAP utility functions
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module Ldap
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extend self
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CLIENT = ConnectionPool.new do
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create_client
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end
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# Creates a new LDAP connection
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private def create_client : LDAP::Client
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LDAP::Client.new(TCPSocket.new(Backend.config.ldap.host, Backend.config.ldap.port))
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end
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# Queries the LDAP server for a user
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#
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# NOTE: Returns raw LDAP data
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def raw_user(dn : String) : User::Raw
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CLIENT.connection do |client|
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client
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.authenticate(Backend.config.ldap.bind_dn, Backend.config.ldap.bind_password)
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.search(base: dn)
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.first
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end
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end
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# Queries the LDAP server for a user
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def user(dn : String) : User
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User.from_raw(raw_user(dn))
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end
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# Checks if credentials are valid
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def authenticate?(dn : String, password : String) : Bool
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!!CLIENT.connection(&.authenticate(dn, password))
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rescue LDAP::Client::AuthError
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false
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end
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end
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end
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