Пример #1
0
func (c *LDAPConnector) Sync() chan struct{} {
	stop := make(chan struct{})

	go func() {
		for {
			select {
			case <-time.After(c.idp.ldapPool.PoolCheckTimer):
				alive, killed := c.idp.ldapPool.CheckConnections()
				if alive > 0 {
					log.Infof("Connector ID=%v idle_conns=%v", c.id, alive)
				}
				if killed > 0 {
					log.Warningf("Connector ID=%v closed %v dead connections.", c.id, killed)
				}
			case <-stop:
				return
			}
		}
	}()
	return stop
}
Пример #2
0
// Put makes a connection ready for re-use and puts it back into the pool. If the connection
// cannot be reused it is discarded. If there already are MaxIdleConn connections in the pool
// the connection is discarded.
func (p *LDAPPool) Put(c *ldap.Conn) {
	p.m.Lock()
	if p.conns == nil {
		// First call to Put, initialize map
		p.conns = make(map[*ldap.Conn]struct{})
	}
	if len(p.conns)+1 > p.MaxIdleConn {
		p.m.Unlock()
		c.Close()
		return
	}
	p.m.Unlock()
	// drop to anonymous bind
	err := c.Bind("", "")
	if err != nil {
		// unsupported or disallowed, throw away connection
		log.Warningf("Unable to re-use LDAP Connection after failure to bind anonymously: %v", err)
		c.Close()
		return
	}
	p.m.Lock()
	p.conns[c] = struct{}{}
	p.m.Unlock()
}
Пример #3
0
func (cfg *LDAPConnectorConfig) Connector(ns url.URL, lf oidc.LoginFunc, tpls *template.Template) (Connector, error) {
	ns.Path = path.Join(ns.Path, httpPathCallback)
	tpl := tpls.Lookup(LDAPLoginPageTemplateName)
	if tpl == nil {
		return nil, fmt.Errorf("unable to find necessary HTML template")
	}

	// defaults
	const defaultNameAttribute = "cn"
	const defaultEmailAttribute = "mail"
	const defaultBindTemplate = "uid=%u,%b"
	const defaultSearchScope = ldap.ScopeWholeSubtree

	if cfg.UseTLS && cfg.UseSSL {
		return nil, fmt.Errorf("Invalid configuration. useTLS and useSSL are mutual exclusive.")
	}

	if len(cfg.CertFile) > 0 && len(cfg.KeyFile) == 0 {
		return nil, fmt.Errorf("Invalid configuration. Both certFile and keyFile must be specified.")
	}

	nameAttribute := defaultNameAttribute
	if len(cfg.NameAttribute) > 0 {
		nameAttribute = cfg.NameAttribute
	}

	emailAttribute := defaultEmailAttribute
	if len(cfg.EmailAttribute) > 0 {
		emailAttribute = cfg.EmailAttribute
	}

	bindTemplate := defaultBindTemplate
	if len(cfg.BindTemplate) > 0 {
		if cfg.SearchBeforeAuth {
			log.Warningf("bindTemplate not used when searchBeforeAuth specified.")
		}
		bindTemplate = cfg.BindTemplate
	}

	searchScope := defaultSearchScope
	if len(cfg.SearchScope) > 0 {
		switch {
		case strings.EqualFold(cfg.SearchScope, "BASE"):
			searchScope = ldap.ScopeBaseObject
		case strings.EqualFold(cfg.SearchScope, "ONE"):
			searchScope = ldap.ScopeSingleLevel
		case strings.EqualFold(cfg.SearchScope, "SUB"):
			searchScope = ldap.ScopeWholeSubtree
		default:
			return nil, fmt.Errorf("Invalid value for searchScope: '%v'. Must be one of 'base', 'one' or 'sub'.", cfg.SearchScope)
		}
	}

	if cfg.Timeout != 0 {
		ldap.DefaultTimeout = cfg.Timeout * time.Millisecond
	}

	tlsConfig := &tls.Config{
		ServerName:         cfg.ServerHost,
		InsecureSkipVerify: cfg.SkipCertVerification,
	}

	if (cfg.UseTLS || cfg.UseSSL) && len(cfg.CaFile) > 0 {
		buf, err := ioutil.ReadFile(cfg.CaFile)
		if err != nil {
			return nil, err
		}

		rootCertPool := x509.NewCertPool()
		ok := rootCertPool.AppendCertsFromPEM(buf)
		if ok {
			tlsConfig.RootCAs = rootCertPool
		} else {
			return nil, fmt.Errorf("%v: Unable to parse certificate data.", cfg.CaFile)
		}
	}

	if (cfg.UseTLS || cfg.UseSSL) && len(cfg.CertFile) > 0 && len(cfg.KeyFile) > 0 {
		cert, err := tls.LoadX509KeyPair(cfg.CertFile, cfg.KeyFile)
		if err != nil {
			return nil, err
		}
		tlsConfig.Certificates = []tls.Certificate{cert}
	}

	idp := &LDAPIdentityProvider{
		serverHost:       cfg.ServerHost,
		serverPort:       cfg.ServerPort,
		useTLS:           cfg.UseTLS,
		useSSL:           cfg.UseSSL,
		baseDN:           cfg.BaseDN,
		nameAttribute:    nameAttribute,
		emailAttribute:   emailAttribute,
		searchBeforeAuth: cfg.SearchBeforeAuth,
		searchFilter:     cfg.SearchFilter,
		searchScope:      searchScope,
		searchBindDN:     cfg.SearchBindDN,
		searchBindPw:     cfg.SearchBindPw,
		bindTemplate:     bindTemplate,
		tlsConfig:        tlsConfig,
	}

	idpc := &LDAPConnector{
		id:                   cfg.ID,
		idp:                  idp,
		namespace:            ns,
		trustedEmailProvider: cfg.TrustedEmailProvider,
		loginFunc:            lf,
		loginTpl:             tpl,
	}

	return idpc, nil
}
Пример #4
0
func (m *LDAPIdentityProvider) Identity(username, password string) (*oidc.Identity, error) {
	var err error
	var bindDN, ldapUid, ldapName, ldapEmail string
	var ldapConn *ldap.Conn

	ldapConn, err = m.LDAPConnect()
	if err != nil {
		return nil, err
	}
	defer ldapConn.Close()

	if m.searchBeforeAuth {
		err = ldapConn.Bind(m.searchBindDN, m.searchBindPw)
		if err != nil {
			return nil, err
		}

		filter := m.ParseString(m.searchFilter, username)

		attributes := []string{
			m.nameAttribute,
			m.emailAttribute,
		}

		s := ldap.NewSearchRequest(m.baseDN, m.searchScope, ldap.NeverDerefAliases, 0, 0, false, filter, attributes, nil)

		sr, err := ldapConn.Search(s)
		if err != nil {
			return nil, err
		}
		if len(sr.Entries) == 0 {
			err = fmt.Errorf("Search returned no match. filter='%v' base='%v'", filter, m.baseDN)
			return nil, err
		}

		bindDN = sr.Entries[0].DN
		ldapName = sr.Entries[0].GetAttributeValue(m.nameAttribute)
		ldapEmail = sr.Entries[0].GetAttributeValue(m.emailAttribute)

		// drop to anonymous bind, prepare for bind as user
		err = ldapConn.Bind("", "")
		if err != nil {
			// unsupported or disallowed, reconnect
			log.Warningf("Re-connecting to LDAP Server after failure to bind anonymously: %v", err)
			ldapConn.Close()
			ldapConn, err = m.LDAPConnect()
			if err != nil {
				return nil, err
			}
		}
	} else {
		bindDN = m.ParseString(m.bindTemplate, username)
	}

	// authenticate user
	err = ldapConn.Bind(bindDN, password)
	if err != nil {
		return nil, err
	}

	ldapUid = bindDN

	return &oidc.Identity{
		ID:    ldapUid,
		Name:  ldapName,
		Email: ldapEmail,
	}, nil
}
Пример #5
0
func (cfg *LDAPConnectorConfig) Connector(ns url.URL, lf oidc.LoginFunc, tpls *template.Template) (Connector, error) {
	ns.Path = path.Join(ns.Path, httpPathCallback)
	tpl := tpls.Lookup(LDAPLoginPageTemplateName)
	if tpl == nil {
		return nil, fmt.Errorf("unable to find necessary HTML template")
	}

	if cfg.UseTLS && cfg.UseSSL {
		return nil, fmt.Errorf("Invalid configuration. useTLS and useSSL are mutual exclusive.")
	}

	if len(cfg.CertFile) > 0 && len(cfg.KeyFile) == 0 {
		return nil, fmt.Errorf("Invalid configuration. Both certFile and keyFile must be specified.")
	}

	// Set default values
	if cfg.NameAttribute == "" {
		cfg.NameAttribute = "cn"
	}
	if cfg.EmailAttribute == "" {
		cfg.EmailAttribute = "mail"
	}
	if cfg.MaxIdleConn > 0 {
		cfg.MaxIdleConn = 5
	}
	if cfg.BindTemplate == "" {
		cfg.BindTemplate = "uid=%u,%b"
	} else if cfg.SearchBeforeAuth {
		log.Warningf("bindTemplate not used when searchBeforeAuth specified.")
	}
	searchScope := ldap.ScopeWholeSubtree
	if cfg.SearchScope != "" {
		switch {
		case strings.EqualFold(cfg.SearchScope, "BASE"):
			searchScope = ldap.ScopeBaseObject
		case strings.EqualFold(cfg.SearchScope, "ONE"):
			searchScope = ldap.ScopeSingleLevel
		case strings.EqualFold(cfg.SearchScope, "SUB"):
			searchScope = ldap.ScopeWholeSubtree
		default:
			return nil, fmt.Errorf("Invalid value for searchScope: '%v'. Must be one of 'base', 'one' or 'sub'.", cfg.SearchScope)
		}
	}

	if cfg.Host == "" {
		if cfg.ServerHost == "" {
			return nil, errors.New("no host provided")
		}
		// For backward compatibility construct host form old fields.
		cfg.Host = fmt.Sprintf("%s:%d", cfg.ServerHost, cfg.ServerPort)
	}

	host, _, err := net.SplitHostPort(cfg.Host)
	if err != nil {
		return nil, fmt.Errorf("host is not of form 'host:port': %v", err)
	}

	tlsConfig := &tls.Config{ServerName: host}

	if (cfg.UseTLS || cfg.UseSSL) && len(cfg.CaFile) > 0 {
		buf, err := ioutil.ReadFile(cfg.CaFile)
		if err != nil {
			return nil, err
		}

		rootCertPool := x509.NewCertPool()
		ok := rootCertPool.AppendCertsFromPEM(buf)
		if ok {
			tlsConfig.RootCAs = rootCertPool
		} else {
			return nil, fmt.Errorf("%v: Unable to parse certificate data.", cfg.CaFile)
		}
	}

	if (cfg.UseTLS || cfg.UseSSL) && len(cfg.CertFile) > 0 && len(cfg.KeyFile) > 0 {
		cert, err := tls.LoadX509KeyPair(cfg.CertFile, cfg.KeyFile)
		if err != nil {
			return nil, err
		}
		tlsConfig.Certificates = []tls.Certificate{cert}
	}

	idpc := &LDAPConnector{
		id:               cfg.ID,
		namespace:        ns,
		loginFunc:        lf,
		loginTpl:         tpl,
		baseDN:           cfg.BaseDN,
		nameAttribute:    cfg.NameAttribute,
		emailAttribute:   cfg.EmailAttribute,
		searchBeforeAuth: cfg.SearchBeforeAuth,
		searchFilter:     cfg.SearchFilter,
		searchScope:      searchScope,
		searchBindDN:     cfg.SearchBindDN,
		searchBindPw:     cfg.SearchBindPw,
		bindTemplate:     cfg.BindTemplate,
		ldapPool: &LDAPPool{
			MaxIdleConn:    cfg.MaxIdleConn,
			PoolCheckTimer: defaultPoolCheckTimer,
			Host:           cfg.Host,
			UseTLS:         cfg.UseTLS,
			UseSSL:         cfg.UseSSL,
			TLSConfig:      tlsConfig,
		},
	}

	return idpc, nil
}