| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package openldap |
| 4 | |
| 5 | import ( |
| 6 | "net" |
| 7 | |
| 8 | "github.com/go-ldap/ldap/v3" |
| 9 | |
| 10 | "github.com/netdata/netdata/go/plugins/pkg/tlscfg" |
| 11 | ) |
| 12 | |
| 13 | type ldapConn interface { |
| 14 | connect() error |
| 15 | disconnect() error |
| 16 | search(*ldap.SearchRequest) (*ldap.SearchResult, error) |
| 17 | } |
| 18 | |
| 19 | func newLdapConn(cfg Config) ldapConn { |
| 20 | return &ldapClient{Config: cfg} |
| 21 | } |
| 22 | |
| 23 | type ldapClient struct { |
| 24 | Config |
| 25 | |
| 26 | conn *ldap.Conn |
| 27 | } |
| 28 | |
| 29 | func (c *ldapClient) search(req *ldap.SearchRequest) (*ldap.SearchResult, error) { |
| 30 | return c.conn.Search(req) |
| 31 | } |
| 32 | |
| 33 | func (c *ldapClient) connect() error { |
| 34 | opts, err := c.connectOpts() |
| 35 | if err != nil { |
| 36 | return err |
| 37 | } |
| 38 | |
| 39 | conn, err := ldap.DialURL(c.URL, opts...) |
| 40 | if err != nil { |
| 41 | return err |
| 42 | } |
| 43 | |
| 44 | if c.Password == "" { |
| 45 | err = conn.UnauthenticatedBind(c.Username) |
| 46 | } else { |
| 47 | err = conn.Bind(c.Username, c.Password) |
| 48 | } |
| 49 | if err != nil { |
| 50 | _ = conn.Close() |
| 51 | return err |
| 52 | } |
| 53 | |
| 54 | c.conn = conn |
| 55 | |
| 56 | return nil |
| 57 | } |
| 58 | |
| 59 | func (c *ldapClient) connectOpts() ([]ldap.DialOpt, error) { |
| 60 | d := &net.Dialer{ |
| 61 | Timeout: c.Timeout.Duration(), |
| 62 | } |
| 63 | |
| 64 | opts := []ldap.DialOpt{ldap.DialWithDialer(d)} |
| 65 | |
| 66 | tlsConf, err := tlscfg.NewTLSConfig(c.TLSConfig) |
| 67 | if err != nil { |
| 68 | return nil, err |
| 69 | } |
| 70 | if tlsConf != nil { |
| 71 | opts = append(opts, ldap.DialWithTLSConfig(tlsConf)) |
| 72 | } |
| 73 | |
| 74 | return opts, nil |
| 75 | } |
| 76 | |
| 77 | func (c *ldapClient) disconnect() error { |
| 78 | defer func() { c.conn = nil }() |
| 79 | if c.conn != nil { |
| 80 | return c.conn.Close() |
| 81 | } |
| 82 | return nil |
| 83 | } |