client.go

package ldap

import (
	"errors"

	"github.com/go-ldap/ldap/v3"
)

type Config struct {
	Server string
	BaseDN string

	IsActiveDirectory bool

	DialOptions []ldap.DialOpt
}

type LDAP struct {
	config Config

	user     string
	password string
}

var ErrDNDuplicated = errors.New("DN is not unique")

func New(config Config, user, password string) (*LDAP, error) {
	l := &LDAP{
		config,
		user,
		password,
	}

	c, err := l.GetConnection()
	if err != nil {
		return nil, err
	}
	c.Close()

	return l, nil
}

func (l *LDAP) WithCredentials(dn, password string) (*LDAP, error) {
	return New(l.config, dn, password)
}

func (l LDAP) GetConnection() (*ldap.Conn, error) {
	dialOpts := make([]ldap.DialOpt, 0)
	if l.config.DialOptions != nil {
		dialOpts = l.config.DialOptions
	}

	c, err := ldap.DialURL(l.config.Server, dialOpts...)
	if err != nil {
		return nil, err
	}

	if err = c.Bind(l.user, l.password); err != nil {
		return nil, err
	}

	return c, nil
}