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dex/connector/ldap/ldap.go

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// Package ldap implements strategies for authenticating using the LDAP protocol.
package ldap
import (
"errors"
"fmt"
"gopkg.in/ldap.v2"
"github.com/coreos/poke/connector"
)
// Config holds the configuration parameters for the LDAP connector.
type Config struct {
Host string `yaml:"host"`
BindDN string `yaml:"bindDN"`
}
// Open returns an authentication strategy using LDAP.
func (c *Config) Open() (connector.Connector, error) {
if c.Host == "" {
return nil, errors.New("missing host parameter")
}
if c.BindDN == "" {
return nil, errors.New("missing bindDN paramater")
}
return &ldapConnector{*c}, nil
}
type ldapConnector struct {
Config
}
var _ connector.PasswordConnector = (*ldapConnector)(nil)
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func (c *ldapConnector) do(f func(c *ldap.Conn) error) error {
// TODO(ericchiang): Connection pooling.
conn, err := ldap.Dial("tcp", c.Host)
if err != nil {
return fmt.Errorf("failed to connect: %v", err)
}
defer conn.Close()
return f(conn)
}
func (c *ldapConnector) Login(username, password string) (connector.Identity, bool, error) {
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err := c.do(func(conn *ldap.Conn) error {
return conn.Bind(fmt.Sprintf("uid=%s,%s", username, c.BindDN), password)
})
if err != nil {
// TODO(ericchiang): Determine when the user has entered invalid credentials.
return connector.Identity{}, false, err
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}
return connector.Identity{Username: username}, true, nil
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}
func (c *ldapConnector) Close() error {
return nil
}