tailcfg

package
v1.18.1 Latest Latest
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 Go to latest Published: Nov 22, 2021 License: BSD-3-Clause Imports: 13 Imported by: 181

Documentation

Index

Constants

View Source 
const (
	MachineUnknown      = MachineStatus(iota)
	MachineUnauthorized // server has yet to approve
	MachineAuthorized   // server has approved
	MachineInvalid      // server has explicitly rejected this machine key
)
View Source 
const (
	TCP = ServiceProto("tcp")
	UDP = ServiceProto("udp")
)
View Source 
const (
	// SignatureNone indicates that there is no signature, no Timestamp is
	// required (but may be specified if desired), and both DeviceCert and
	// Signature should be empty.
	SignatureNone = SignatureType(iota)
	// SignatureUnknown represents an unknown signature scheme, which should
	// be considered an error if seen.
	SignatureUnknown
	// SignatureV1 is computed as RSA-PSS-Sign(privateKeyForDeviceCert,
	// SHA256(Timestamp || ServerIdentity || DeviceCert || ServerShortPubKey ||
	// MachineShortPubKey)). The PSS salt length is equal to hash length
	// (rsa.PSSSaltLengthEqualsHash). Device cert is required.
	// Deprecated: uses old key serialization format.
	SignatureV1
	// SignatureV2 is computed as RSA-PSS-Sign(privateKeyForDeviceCert,
	// SHA256(Timestamp || ServerIdentity || DeviceCert || ServerPubKey ||
	// MachinePubKey)). The PSS salt length is equal to hash length
	// (rsa.PSSSaltLengthEqualsHash). Device cert is required.
	SignatureV2
)
View Source 
const (
	EndpointUnknownType    = EndpointType(0)
	EndpointLocal          = EndpointType(1)
	EndpointSTUN           = EndpointType(2)
	EndpointPortmapped     = EndpointType(3)
	EndpointSTUN4LocalPort = EndpointType(4) // hard NAT: STUN'ed IPv4 address + local fixed port
)
View Source 
const (
	CapabilityFileSharing = "https://tailscale.com/cap/file-sharing"
	CapabilityAdmin       = "https://tailscale.com/cap/is-admin"
)
View Source 
const CurrentMapRequestVersion = 25

CurrentMapRequestVersion is the current MapRequest.Version value.

History of versions: 

 3: implicit compression, keep-alives
 4: opt-in keep-alives via KeepAlive field, opt-in compression via Compress
 5: 2020-10-19, implies IncludeIPv6, delta Peers/UserProfiles, supports MagicDNS
 6: 2020-12-07: means MapResponse.PacketFilter nil means unchanged
 7: 2020-12-15: FilterRule.SrcIPs accepts CIDRs+ranges, doesn't warn about 0.0.0.0/::
 8: 2020-12-19: client can buggily receive IPv6 addresses and routes if beta enabled server-side
 9: 2020-12-30: client doesn't auto-add implicit search domains from peers; only DNSConfig.Domains
10: 2021-01-17: client understands MapResponse.PeerSeenChange
11: 2021-03-03: client understands IPv6, multiple default routes, and goroutine dumping
12: 2021-03-04: client understands PingRequest
13: 2021-03-19: client understands FilterRule.IPProto
14: 2021-04-07: client understands DNSConfig.Routes and DNSConfig.Resolvers
15: 2021-04-12: client treats nil MapResponse.DNSConfig as meaning unchanged
16: 2021-04-15: client understands Node.Online, MapResponse.OnlineChange
17: 2021-04-18: MapResponse.Domain empty means unchanged
18: 2021-04-19: MapResponse.Node nil means unchanged (all fields now omitempty)
19: 2021-04-21: MapResponse.Debug.SleepSeconds
20: 2021-06-11: MapResponse.LastSeen used even less (https://github.com/tailscale/tailscale/issues/2107)
21: 2021-06-15: added MapResponse.DNSConfig.CertDomains
22: 2021-06-16: added MapResponse.DNSConfig.ExtraRecords
23: 2021-08-25: DNSConfig.Routes values may be empty (for ExtraRecords support in 1.14.1+)
24: 2021-09-18: MapResponse.Health from control to node; node shows in "tailscale status"
25: 2021-11-01: MapResponse.Debug.Exit

Variables

View Source 
var FilterAllowAll = []FilterRule{
	{
		SrcIPs:  []string{"*"},
		SrcBits: nil,
		DstPorts: []NetPortRange{{
			IP:    "*",
			Bits:  nil,
			Ports: PortRange{0, 65535},
		}},
	},
}
View Source 
var PortRangeAny = PortRange{0, 65535}

Functions

func CheckTag added in v0.98.1 

func CheckTag(tag string) error

CheckTag validates tag for use as an ACL tag. For now we allow only ascii alphanumeric tags, and they need to start with a letter. No unicode shenanigans allowed, and we reserve punctuation marks other than '-' for a possible future URI scheme.

Because we're ignoring unicode entirely, we can treat utf-8 as a series of bytes. Anything >= 128 is disqualified anyway.

We might relax these rules later.

func Clone added in v1.2.0 

func Clone(dst, src interface{}) bool

Clone duplicates src into dst and reports whether it succeeded. To succeed, <src, dst> must be of types <*T, *T> or <*T, **T>, where T is one of User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,DERPRegion,DERPMap,DERPNode.

Types

type DERPMap added in v0.98.1 

type DERPMap struct {
	// Regions is the set of geographic regions running DERP node(s).
	//
	// It's keyed by the DERPRegion.RegionID.
	//
	// The numbers are not necessarily contiguous.
	Regions map[int]*DERPRegion

	// OmitDefaultRegions specifies to not use Tailscale's DERP servers, and only use those
	// specified in this DERPMap. If there are none set outside of the defaults, this is a noop.
	OmitDefaultRegions bool `json:"omitDefaultRegions,omitempty"`
}

DERPMap describes the set of DERP packet relay servers that are available.

func (*DERPMap) Clone added in v1.10.0 

func (src *DERPMap) Clone() *DERPMap

Clone makes a deep copy of DERPMap. The result aliases no memory with the original.

func (*DERPMap) RegionIDs added in v0.98.1 

func (m *DERPMap) RegionIDs() []int

/ RegionIDs returns the sorted region IDs.

type DERPNode added in v0.98.1 

type DERPNode struct {
	// Name is a unique node name (across all regions).
	// It is not a host name.
	// It's typically of the form "1b", "2a", "3b", etc. (region
	// ID + suffix within that region)
	Name string

	// RegionID is the RegionID of the DERPRegion that this node
	// is running in.
	RegionID int

	// HostName is the DERP node's hostname.
	//
	// It is required but need not be unique; multiple nodes may
	// have the same HostName but vary in configuration otherwise.
	HostName string

	// CertName optionally specifies the expected TLS cert common
	// name. If empty, HostName is used. If CertName is non-empty,
	// HostName is only used for the TCP dial (if IPv4/IPv6 are
	// not present) + TLS ClientHello.
	CertName string `json:",omitempty"`

	// IPv4 optionally forces an IPv4 address to use, instead of using DNS.
	// If empty, A record(s) from DNS lookups of HostName are used.
	// If the string is not an IPv4 address, IPv4 is not used; the
	// conventional string to disable IPv4 (and not use DNS) is
	// "none".
	IPv4 string `json:",omitempty"`

	// IPv6 optionally forces an IPv6 address to use, instead of using DNS.
	// If empty, AAAA record(s) from DNS lookups of HostName are used.
	// If the string is not an IPv6 address, IPv6 is not used; the
	// conventional string to disable IPv6 (and not use DNS) is
	// "none".
	IPv6 string `json:",omitempty"`

	// Port optionally specifies a STUN port to use.
	// Zero means 3478.
	// To disable STUN on this node, use -1.
	STUNPort int `json:",omitempty"`

	// STUNOnly marks a node as only a STUN server and not a DERP
	// server.
	STUNOnly bool `json:",omitempty"`

	// DERPPort optionally provides an alternate TLS port number
	// for the DERP HTTPS server.
	//
	// If zero, 443 is used.
	DERPPort int `json:",omitempty"`

	// InsecureForTests is used by unit tests to disable TLS verification.
	// It should not be set by users.
	InsecureForTests bool `json:",omitempty"`

	// STUNTestIP is used in tests to override the STUN server's IP.
	// If empty, it's assumed to be the same as the DERP server.
	STUNTestIP string `json:",omitempty"`
}

DERPNode describes a DERP packet relay node running within a DERPRegion.

func (*DERPNode) Clone added in v1.10.0 

func (src *DERPNode) Clone() *DERPNode

Clone makes a deep copy of DERPNode. The result aliases no memory with the original.

type DERPRegion added in v0.98.1 

type DERPRegion struct {
	// RegionID is a unique integer for a geographic region.
	//
	// It corresponds to the legacy derpN.tailscale.com hostnames
	// used by older clients. (Older clients will continue to resolve
	// derpN.tailscale.com when contacting peers, rather than use
	// the server-provided DERPMap)
	//
	// RegionIDs must be non-zero, positive, and guaranteed to fit
	// in a JavaScript number.
	//
	// RegionIDs in range 900-999 are reserved for end users to run their
	// own DERP nodes.
	RegionID int

	// RegionCode is a short name for the region. It's usually a popular
	// city or airport code in the region: "nyc", "sf", "sin",
	// "fra", etc.
	RegionCode string

	// RegionName is a long English name for the region: "New York City",
	// "San Francisco", "Singapore", "Frankfurt", etc.
	RegionName string

	// Avoid is whether the client should avoid picking this as its home
	// region. The region should only be used if a peer is there.
	// Clients already using this region as their home should migrate
	// away to a new region without Avoid set.
	Avoid bool `json:",omitempty"`

	// Nodes are the DERP nodes running in this region, in
	// priority order for the current client. Client TLS
	// connections should ideally only go to the first entry
	// (falling back to the second if necessary). STUN packets
	// should go to the first 1 or 2.
	//
	// If nodes within a region route packets amongst themselves,
	// but not to other regions. That said, each user/domain
	// should get a the same preferred node order, so if all nodes
	// for a user/network pick the first one (as they should, when
	// things are healthy), the inter-cluster routing is minimal
	// to zero.
	Nodes []*DERPNode
}

DERPRegion is a geographic region running DERP relay node(s).

Client nodes discover which region they're closest to, advertise that "home" DERP region (previously called "home node", when there was only 1 node per region) and maintain a persistent connection that region as long as it's the closest. Client nodes will further connect to other regions as necessary to communicate with peers advertising other regions as their homes.

func (*DERPRegion) Clone added in v1.10.0 

func (src *DERPRegion) Clone() *DERPRegion

Clone makes a deep copy of DERPRegion. The result aliases no memory with the original.

type DNSConfig added in v1.0.1 

type DNSConfig struct {
	// Resolvers are the DNS resolvers to use, in order of preference.
	Resolvers []dnstype.Resolver `json:",omitempty"`

	// Routes maps DNS name suffixes to a set of DNS resolvers to
	// use. It is used to implement "split DNS" and other advanced DNS
	// routing overlays.
	//
	// Map keys are fully-qualified DNS name suffixes; they may
	// optionally contain a trailing dot but no leading dot.
	//
	// If the value is an empty slice, that means the suffix should still
	// be handled by Tailscale's built-in resolver (100.100.100.100), such
	// as for the purpose of handling ExtraRecords.
	Routes map[string][]dnstype.Resolver `json:",omitempty"`

	// FallbackResolvers is like Resolvers, but is only used if a
	// split DNS configuration is requested in a configuration that
	// doesn't work yet without explicit default resolvers.
	// https://github.com/tailscale/tailscale/issues/1743
	FallbackResolvers []dnstype.Resolver `json:",omitempty"`
	// Domains are the search domains to use.
	// Search domains must be FQDNs, but *without* the trailing dot.
	Domains []string `json:",omitempty"`
	// Proxied turns on automatic resolution of hostnames for devices
	// in the network map, aka MagicDNS.
	// Despite the (legacy) name, does not necessarily cause request
	// proxying to be enabled.
	Proxied bool `json:",omitempty"`

	// Nameservers are the IP addresses of the nameservers to use.
	Nameservers []netaddr.IP `json:",omitempty"`

	// PerDomain is not set by the control server, and does nothing.
	PerDomain bool `json:",omitempty"`

	// CertDomains are the set of DNS names for which the control
	// plane server will assist with provisioning TLS
	// certificates. See SetDNSRequest, which can be used to
	// answer dns-01 ACME challenges for e.g. LetsEncrypt.
	// These names are FQDNs without trailing periods, and without
	// any "_acme-challenge." prefix.
	CertDomains []string `json:",omitempty"`

	// ExtraRecords contains extra DNS records to add to the
	// MagicDNS config.
	ExtraRecords []DNSRecord `json:",omitempty"`
}

DNSConfig is the DNS configuration.

func (*DNSConfig) Clone added in v1.2.0 

func (src *DNSConfig) Clone() *DNSConfig

Clone makes a deep copy of DNSConfig. The result aliases no memory with the original.

type DNSRecord added in v1.10.0 

type DNSRecord struct {
	// Name is the fully qualified domain name of
	// the record to add. The trailing dot is optional.
	Name string

	// Type is the DNS record type.
	// Empty means A or AAAA, depending on value.
	// Other values are currently ignored.
	Type string `json:",omitempty"`

	// Value is the IP address in string form.
	// TODO(bradfitz): if we ever add support for record types
	// with non-UTF8 binary data, add ValueBytes []byte that
	// would take precedence.
	Value string
}

DNSRecord is an extra DNS record to add to MagicDNS.

type Debug added in v0.98.1 

type Debug struct {
	// LogHeapPprof controls whether the client should log
	// its heap pprof data. Each true value sent from the server
	// means that client should do one more log.
	LogHeapPprof bool `json:",omitempty"`

	// LogHeapURL is the URL to POST its heap pprof to.
	// Empty means to not log.
	LogHeapURL string `json:",omitempty"`

	// ForceBackgroundSTUN controls whether magicsock should
	// always do its background STUN queries (see magicsock's
	// periodicReSTUN), regardless of inactivity.
	ForceBackgroundSTUN bool `json:",omitempty"`

	// DERPRoute controls whether the DERP reverse path
	// optimization (see Issue 150) should be enabled or
	// disabled. The environment variable in magicsock is the
	// highest priority (if set), then this (if set), then the
	// binary default value.
	DERPRoute opt.Bool `json:",omitempty"`

	// TrimWGConfig controls whether Tailscale does lazy, on-demand
	// wireguard configuration of peers.
	TrimWGConfig opt.Bool `json:",omitempty"`

	// DisableSubnetsIfPAC controls whether subnet routers should be
	// disabled if WPAD is present on the network.
	DisableSubnetsIfPAC opt.Bool `json:",omitempty"`

	// GoroutineDumpURL, if non-empty, requests that the client do
	// a one-time dump of its active goroutines to the given URL.
	GoroutineDumpURL string `json:",omitempty"`

	// SleepSeconds requests that the client sleep for the
	// provided number of seconds.
	// The client can (and should) limit the value (such as 5
	// minutes).
	SleepSeconds float64 `json:",omitempty"`

	// RandomizeClientPort is whether magicsock should UDP bind to
	// :0 to get a random local port, ignoring any configured
	// fixed port.
	RandomizeClientPort bool `json:",omitempty"`

	// DisableUPnP is whether the client will attempt to perform a UPnP portmapping.
	// By default, we want to enable it to see if it works on more clients.
	//
	// If UPnP catastrophically fails for people, this should be set to True to kill
	// new attempts at UPnP connections.
	DisableUPnP opt.Bool `json:",omitempty"`

	// Exit optionally specifies that the client should os.Exit
	// with this code.
	Exit *int `json:",omitempty"`
}

Debug are instructions from the control server to the client to adjust debug settings.

type Endpoint added in v1.8.0 

type Endpoint struct {
	Addr netaddr.IPPort
	Type EndpointType
}

Endpoint is an endpoint IPPort and an associated type. It doesn't currently go over the wire as is but is instead broken up into two parallel slices in MapRequest, for compatibility reasons. But this type is used in the codebase.

type EndpointType added in v1.8.0 

type EndpointType int

EndpointType distinguishes different sources of MapRequest.Endpoint values.

func (EndpointType) String added in v1.8.0 

func (et EndpointType) String() string

type FilterRule added in v0.98.1 

type FilterRule struct {
	// SrcIPs are the source IPs/networks to match.
	//
	// It may take the following forms:
	//     * an IP address (IPv4 or IPv6)
	//     * the string "*" to match everything (both IPv4 & IPv6)
	//     * a CIDR (e.g. "192.168.0.0/16")
	//     * a range of two IPs, inclusive, separated by hyphen ("2eff::1-2eff::0800")
	SrcIPs []string

	// SrcBits is deprecated; it's the old way to specify a CIDR
	// prior to MapRequest.Version 7. Its values correspond to the
	// SrcIPs above.
	//
	// If an entry of SrcBits is present for the same index as a
	// SrcIPs entry, it changes the SrcIP above to be a network
	// with /n CIDR bits. If the slice is nil or insufficiently
	// long, the default value (for an IPv4 address) for a
	// position is 32, as if the SrcIPs above were a /32 mask. For
	// a "*" SrcIPs value, the corresponding SrcBits value is
	// ignored.
	SrcBits []int `json:",omitempty"`

	// DstPorts are the port ranges to allow once a source IP
	// matches (is in the CIDR described by SrcIPs & SrcBits).
	DstPorts []NetPortRange

	// IPProto are the IP protocol numbers to match.
	//
	// As a special case, nil or empty means TCP, UDP, and ICMP.
	//
	// Numbers outside the uint8 range (below 0 or above 255) are
	// reserved for Tailscale's use. Unknown ones are ignored.
	//
	// Depending on the IPProto values, DstPorts may or may not be
	// used.
	IPProto []int `json:",omitempty"`
}

FilterRule represents one rule in a packet filter.

A rule is logically a set of source CIDRs to match (described by SrcIPs and SrcBits), and a set of destination targets that are then allowed if a source IP is mathces of those CIDRs.

type Hostinfo 

type Hostinfo struct {
	// TODO(crawshaw): mark all these fields ",omitempty" when all the
	// iOS apps are updated with the latest swift version of this struct.
	IPNVersion    string             `json:",omitempty"` // version of this code
	FrontendLogID string             `json:",omitempty"` // logtail ID of frontend instance
	BackendLogID  string             `json:",omitempty"` // logtail ID of backend instance
	OS            string             // operating system the client runs on (a version.OS value)
	OSVersion     string             `json:",omitempty"` // operating system version, with optional distro prefix ("Debian 10.4", "Windows 10 Pro 10.0.19041")
	Package       string             `json:",omitempty"` // Tailscale package to disambiguate ("choco", "appstore", etc; "" for unknown)
	DeviceModel   string             `json:",omitempty"` // mobile phone model ("Pixel 3a", "iPhone12,3")
	Hostname      string             // name of the host the client runs on
	ShieldsUp     bool               `json:",omitempty"` // indicates whether the host is blocking incoming connections
	ShareeNode    bool               `json:",omitempty"` // indicates this node exists in netmap because it's owned by a shared-to user
	GoArch        string             `json:",omitempty"` // the host's GOARCH value (of the running binary)
	RoutableIPs   []netaddr.IPPrefix `json:",omitempty"` // set of IP ranges this client can route
	RequestTags   []string           `json:",omitempty"` // set of ACL tags this node wants to claim
	Services      []Service          `json:",omitempty"` // services advertised by this machine
	NetInfo       *NetInfo           `json:",omitempty"`
}

Hostinfo contains a summary of a Tailscale host.

Because it contains pointers (slices), this type should not be used as a value type.

func (*Hostinfo) CheckRequestTags added in v1.4.0 

func (h *Hostinfo) CheckRequestTags() error

CheckRequestTags checks that all of h.RequestTags are valid.

func (*Hostinfo) Clone 

func (src *Hostinfo) Clone() *Hostinfo

Clone makes a deep copy of Hostinfo. The result aliases no memory with the original.

func (*Hostinfo) Equal 

func (h *Hostinfo) Equal(h2 *Hostinfo) bool

Equal reports whether h and h2 are equal.

type ID 

type ID int64

func (ID) String 

func (id ID) String() string

type Login 

type Login struct {
	ID            LoginID
	Provider      string
	LoginName     string
	DisplayName   string
	ProfilePicURL string
	Domain        string
	// contains filtered or unexported fields
}

func (*Login) Clone added in v1.2.0 

func (src *Login) Clone() *Login

Clone makes a deep copy of Login. The result aliases no memory with the original.

type LoginID 

type LoginID ID

func (LoginID) IsZero added in v1.2.0 

func (u LoginID) IsZero() bool

func (LoginID) String 

func (id LoginID) String() string

type MachineStatus 

type MachineStatus int

func (MachineStatus) MarshalText 

func (m MachineStatus) MarshalText() ([]byte, error)

func (MachineStatus) String 

func (m MachineStatus) String() string

func (*MachineStatus) UnmarshalText 

func (m *MachineStatus) UnmarshalText(b []byte) error

type MapRequest 

type MapRequest struct {
	// Version is incremented whenever the client code changes enough that
	// we want to signal to the control server that we're capable of something
	// different.
	//
	// For current values and history, see CurrentMapRequestVersion above.
	Version int

	Compress    string // "zstd" or "" (no compression)
	KeepAlive   bool   // whether server should send keep-alives back to us
	NodeKey     key.NodePublic
	DiscoKey    key.DiscoPublic
	IncludeIPv6 bool `json:",omitempty"` // include IPv6 endpoints in returned Node Endpoints (for Version 4 clients)
	Stream      bool // if true, multiple MapResponse objects are returned
	Hostinfo    *Hostinfo

	// Endpoints are the client's magicsock UDP ip:port endpoints (IPv4 or IPv6).
	Endpoints []string
	// EndpointTypes are the types of the corresponding endpoints in Endpoints.
	EndpointTypes []EndpointType `json:",omitempty"`

	// ReadOnly is whether the client just wants to fetch the
	// MapResponse, without updating their Endpoints. The
	// Endpoints field will be ignored and LastSeen will not be
	// updated and peers will not be notified of changes.
	//
	// The intended use is for clients to discover the DERP map at
	// start-up before their first real endpoint update.
	ReadOnly bool `json:",omitempty"`

	// OmitPeers is whether the client is okay with the Peers list
	// being omitted in the response. (For example, a client on
	// start up using ReadOnly to get the DERP map.)
	//
	// If OmitPeers is true, Stream is false, and ReadOnly is false,
	// then the server will let clients update their endpoints without
	// breaking existing long-polling (Stream == true) connections.
	OmitPeers bool `json:",omitempty"`

	// DebugFlags is a list of strings specifying debugging and
	// development features to enable in handling this map
	// request. The values are deliberately unspecified, as they get
	// added and removed all the time during development, and offer no
	// compatibility promise. To roll out semantic changes, bump
	// Version instead.
	//
	// Current DebugFlags values are:
	//     * "warn-ip-forwarding-off": client is trying to be a subnet
	//       router but their IP forwarding is broken.
	//     * "warn-router-unhealthy": client's Router implementation is
	//       having problems.
	//     * "v6-overlay": IPv6 development flag to have control send
	//       v6 node addrs
	//     * "minimize-netmap": have control minimize the netmap, removing
	//       peers that are unreachable per ACLS.
	DebugFlags []string `json:",omitempty"`
}

MapRequest is sent by a client to start a long-poll network map updates. The request includes a copy of the client's current set of WireGuard endpoints and general host information.

The request is encoded to JSON, encrypted with golang.org/x/crypto/nacl/box, using the local machine key, and sent to: 

https://login.tailscale.com/machine/<mkey hex>/map

type MapResponse 

type MapResponse struct {
	// KeepAlive, if set, represents an empty message just to keep
	// the connection alive. When true, all other fields except
	// PingRequestURL are ignored.
	KeepAlive bool `json:",omitempty"`

	// PingRequest, if non-empty, is a request to the client to
	// prove it's still there by sending an HTTP request to the
	// provided URL. No auth headers are necessary.
	// PingRequest may be sent on any MapResponse (ones with
	// KeepAlive true or false).
	PingRequest *PingRequest `json:",omitempty"`

	// Node describes the node making the map request.
	// Starting with MapRequest.Version 18, nil means unchanged.
	Node *Node `json:",omitempty"`

	// DERPMap describe the set of DERP servers available.
	// A nil value means unchanged.
	DERPMap *DERPMap `json:",omitempty"`

	// Peers, if non-empty, is the complete list of peers.
	// It will be set in the first MapResponse for a long-polled request/response.
	// Subsequent responses will be delta-encoded if MapRequest.Version >= 5 and server
	// chooses, in which case Peers will be nil or zero length.
	// If Peers is non-empty, PeersChanged and PeersRemoved should
	// be ignored (and should be empty).
	// Peers is always returned sorted by Node.ID.
	Peers []*Node `json:",omitempty"`
	// PeersChanged are the Nodes (identified by their ID) that
	// have changed or been added since the past update on the
	// HTTP response. It's not used by the server if MapRequest.Version < 5.
	// PeersChanged is always returned sorted by Node.ID.
	PeersChanged []*Node `json:",omitempty"`
	// PeersRemoved are the NodeIDs that are no longer in the peer list.
	PeersRemoved []NodeID `json:",omitempty"`

	// PeerSeenChange contains information on how to update peers' LastSeen
	// times. If the value is false, the peer is gone. If the value is true,
	// the LastSeen time is now. Absent means unchanged.
	PeerSeenChange map[NodeID]bool `json:",omitempty"`

	// OnlineChange changes the value of a Peer Node.Online value.
	OnlineChange map[NodeID]bool `json:",omitempty"`

	// DNS is the same as DNSConfig.Nameservers.
	// Only populated if MapRequest.Version < 9.
	DNS []netaddr.IP `json:",omitempty"`

	// SearchPaths is the old way to specify DNS search domains.
	// Only populated if MapRequest.Version < 9.
	SearchPaths []string `json:",omitempty"`

	// DNSConfig contains the DNS settings for the client to use.
	// A nil value means no change from an earlier non-nil value.
	DNSConfig *DNSConfig `json:",omitempty"`

	// Domain is the name of the network that this node is
	// in. It's either of the form "example.com" (for user
	// foo@example.com, for multi-user networks) or
	// "foo@gmail.com" (for siloed users on shared email
	// providers). Its exact form should not be depended on; new
	// forms are coming later.
	// If empty, the value is unchanged.
	Domain string `json:",omitempty"`

	// CollectServices reports whether this node's Tailnet has
	// requested that info about services be included in HostInfo.
	// If unset, the most recent non-empty MapResponse value in
	// the HTTP response stream is used.
	CollectServices opt.Bool `json:",omitempty"`

	// PacketFilter are the firewall rules.
	//
	// For MapRequest.Version >= 6, a nil value means the most
	// previously streamed non-nil MapResponse.PacketFilter within
	// the same HTTP response. A non-nil but empty list always means
	// no PacketFilter (that is, to block everything).
	PacketFilter []FilterRule `json:",omitempty"`

	// UserProfiles are the user profiles of nodes in the network.
	// As as of 1.1.541 (mapver 5), this contains new or updated
	// user profiles only.
	UserProfiles []UserProfile `json:",omitempty"`

	// Health, if non-nil, sets the health state
	// of the node from the control plane's perspective.
	// A nil value means no change from the previous MapResponse.
	// A non-nil 0-length slice restores the health to good (no known problems).
	// A non-zero length slice are the list of problems that the control place
	// sees.
	Health []string `json:",omitempty"`

	// Debug is normally nil, except for when the control server
	// is setting debug settings on a node.
	Debug *Debug `json:",omitempty"`
}

type NetInfo 

type NetInfo struct {
	// MappingVariesByDestIP says whether the host's NAT mappings
	// vary based on the destination IP.
	MappingVariesByDestIP opt.Bool

	// HairPinning is their router does hairpinning.
	// It reports true even if there's no NAT involved.
	HairPinning opt.Bool

	// WorkingIPv6 is whether IPv6 works.
	WorkingIPv6 opt.Bool

	// WorkingUDP is whether UDP works.
	WorkingUDP opt.Bool

	// HavePortMap is whether we have an existing portmap open
	// (UPnP, PMP, or PCP).
	HavePortMap bool `json:",omitempty"`

	// UPnP is whether UPnP appears present on the LAN.
	// Empty means not checked.
	UPnP opt.Bool

	// PMP is whether NAT-PMP appears present on the LAN.
	// Empty means not checked.
	PMP opt.Bool

	// PCP is whether PCP appears present on the LAN.
	// Empty means not checked.
	PCP opt.Bool

	// PreferredDERP is this node's preferred DERP server
	// for incoming traffic. The node might be be temporarily
	// connected to multiple DERP servers (to send to other nodes)
	// but PreferredDERP is the instance number that the node
	// subscribes to traffic at.
	// Zero means disconnected or unknown.
	PreferredDERP int

	// LinkType is the current link type, if known.
	LinkType string `json:",omitempty"` // "wired", "wifi", "mobile" (LTE, 4G, 3G, etc)

	// DERPLatency is the fastest recent time to reach various
	// DERP STUN servers, in seconds. The map key is the
	// "regionID-v4" or "-v6"; it was previously the DERP server's
	// STUN host:port.
	//
	// This should only be updated rarely, or when there's a
	// material change, as any change here also gets uploaded to
	// the control plane.
	DERPLatency map[string]float64 `json:",omitempty"`
}

NetInfo contains information about the host's network state.

func (*NetInfo) BasicallyEqual 

func (ni *NetInfo) BasicallyEqual(ni2 *NetInfo) bool

BasicallyEqual reports whether ni and ni2 are basically equal, ignoring changes in DERP ServerLatency & RegionLatency.

func (*NetInfo) Clone 

func (src *NetInfo) Clone() *NetInfo

Clone makes a deep copy of NetInfo. The result aliases no memory with the original.

func (*NetInfo) String 

func (ni *NetInfo) String() string

type NetPortRange added in v0.98.1 

type NetPortRange struct {
	IP    string // IP, CIDR, Range, or "*" (same formats as FilterRule.SrcIPs)
	Bits  *int   // deprecated; the old way to turn IP into a CIDR
	Ports PortRange
	// contains filtered or unexported fields
}

NetPortRange represents a range of ports that's allowed for one or more IPs.

type Node 

type Node struct {
	ID       NodeID
	StableID StableNodeID
	Name     string // DNS

	// User is the user who created the node. If ACL tags are in
	// use for the node then it doesn't reflect the ACL identity
	// that the node is running as.
	User UserID

	// Sharer, if non-zero, is the user who shared this node, if different than User.
	Sharer UserID `json:",omitempty"`

	Key        key.NodePublic
	KeyExpiry  time.Time
	Machine    key.MachinePublic
	DiscoKey   key.DiscoPublic
	Addresses  []netaddr.IPPrefix // IP addresses of this Node directly
	AllowedIPs []netaddr.IPPrefix // range of IP addresses to route to this node
	Endpoints  []string           `json:",omitempty"` // IP+port (public via STUN, and local LANs)
	DERP       string             `json:",omitempty"` // DERP-in-IP:port ("127.3.3.40:N") endpoint
	Hostinfo   Hostinfo
	Created    time.Time

	// Tags are the list of ACL tags applied to this node.
	// Tags take the form of `tag:<value>` where value starts
	// with a letter and only contains alphanumerics and dashes `-`.
	// Some valid tag examples:
	//   `tag:prod`
	//   `tag:database`
	//   `tag:lab-1`
	Tags []string `json:",omitempty"`

	// PrimaryRoutes are the routes from AllowedIPs that this node
	// is currently the primary subnet router for, as determined
	// by the control plane. It does not include the self address
	// values from Addresses that are in AllowedIPs.
	PrimaryRoutes []netaddr.IPPrefix `json:",omitempty"`

	// LastSeen is when the node was last online. It is not
	// updated when Online is true. It is nil if the current
	// node doesn't have permission to know, or the node
	// has never been online.
	LastSeen *time.Time `json:",omitempty"`

	// Online is whether the node is currently connected to the
	// coordination server.  A value of nil means unknown, or the
	// current node doesn't have permission to know.
	Online *bool `json:",omitempty"`

	KeepAlive bool `json:",omitempty"` // open and keep open a connection to this peer

	MachineAuthorized bool `json:",omitempty"` // TODO(crawshaw): replace with MachineStatus

	// Capabilities are capabilities that the node has.
	// They're free-form strings, but should be in the form of URLs/URIs
	// such as:
	//    "https://tailscale.com/cap/is-admin"
	//    "https://tailscale.com/cap/file-sharing"
	Capabilities []string `json:",omitempty"`

	ComputedName string `json:",omitempty"` // MagicDNS base name (for normal non-shared-in nodes), FQDN (without trailing dot, for shared-in nodes), or Hostname (if no MagicDNS)

	ComputedNameWithHost string `json:",omitempty"` // either "ComputedName" or "ComputedName (computedHostIfDifferent)", if computedHostIfDifferent is set
	// contains filtered or unexported fields
}

func (*Node) Clone 

func (src *Node) Clone() *Node

Clone makes a deep copy of Node. The result aliases no memory with the original.

func (*Node) DisplayName added in v1.4.0 

func (n *Node) DisplayName(forOwner bool) string

DisplayName returns the user-facing name for a node which should be shown in client UIs.

Parameter forOwner specifies whether the name is requested by the owner of the node. When forOwner is false, the hostname is never included in the return value.

Return value is either either "Name" or "Name (Hostname)", where Name is the node's MagicDNS base name (for normal non-shared-in nodes), FQDN (without trailing dot, for shared-in nodes), or Hostname (if no MagicDNS). Hostname is only included in the return value if it varies from Name and forOwner is provided true.

DisplayName is only valid if InitDisplayNames has been called.

func (*Node) DisplayNames added in v1.4.0 

func (n *Node) DisplayNames(forOwner bool) (name, hostIfDifferent string)

DisplayName returns the decomposed user-facing name for a node.

Parameter forOwner specifies whether the name is requested by the owner of the node. When forOwner is false, hostIfDifferent is always returned empty.

Return value name is the node's primary name, populated with the node's MagicDNS base name (for normal non-shared-in nodes), FQDN (without trailing dot, for shared-in nodes), or Hostname (if no MagicDNS).

Return value hostIfDifferent, when non-empty, is the node's hostname. hostIfDifferent is only populated when the hostname varies from name and forOwner is provided as true.

DisplayNames is only valid if InitDisplayNames has been called.

func (*Node) Equal 

func (n *Node) Equal(n2 *Node) bool

Equal reports whether n and n2 are equal.

func (*Node) InitDisplayNames added in v1.4.0 

func (n *Node) InitDisplayNames(networkMagicDNSSuffix string)

InitDisplayNames computes and populates n's display name fields: n.ComputedName, n.computedHostIfDifferent, and n.ComputedNameWithHost.

type NodeID 

type NodeID ID

func (NodeID) IsZero added in v1.2.0 

func (u NodeID) IsZero() bool

func (NodeID) String 

func (id NodeID) String() string

type Oauth2Token added in v1.8.0 

type Oauth2Token struct {
	// AccessToken is the token that authorizes and authenticates
	// the requests.
	AccessToken string `json:"access_token"`

	// TokenType is the type of token.
	// The Type method returns either this or "Bearer", the default.
	TokenType string `json:"token_type,omitempty"`

	// RefreshToken is a token that's used by the application
	// (as opposed to the user) to refresh the access token
	// if it expires.
	RefreshToken string `json:"refresh_token,omitempty"`

	// Expiry is the optional expiration time of the access token.
	//
	// If zero, TokenSource implementations will reuse the same
	// token forever and RefreshToken or equivalent
	// mechanisms for that TokenSource will not be used.
	Expiry time.Time `json:"expiry,omitempty"`
}

Oauth2Token is a copy of golang.org/x/oauth2.Token, to avoid the go.mod dependency on App Engine and grpc, which was causing problems. All we actually needed was this struct on the client side.

type PingRequest added in v1.6.0 

type PingRequest struct {
	// URL is the URL to send a HEAD request to.
	// It will be a unique URL each time. No auth headers are necessary.
	//
	// If the client sees multiple PingRequests with the same URL,
	// subsequent ones should be ignored.
	// If Types and IP are defined, then URL is the URL to send a POST request to.
	URL string

	// Log is whether to log about this ping in the success case.
	// For failure cases, the client will log regardless.
	Log bool `json:",omitempty"`

	// Types is the types of ping that is initiated. Can be TSMP, ICMP or disco.
	// Types will be comma separated, such as TSMP,disco.
	Types string

	// IP is the ping target.
	// It is used in TSMP pings, if IP is invalid or empty then do a HEAD request to the URL.
	IP netaddr.IP
}

PingRequest with no IP and Types is a request to send an HTTP request to prove the long-polling client is still connected. PingRequest with Types and IP, will send a ping to the IP and send a POST request to the URL to prove that the ping succeeded.

type PortRange added in v0.98.1 

type PortRange struct {
	First uint16
	Last  uint16
}

PortRange represents a range of UDP or TCP port numbers.

type RegisterRequest 

type RegisterRequest struct {
	Version    int // currently 1
	NodeKey    key.NodePublic
	OldNodeKey key.NodePublic
	Auth       struct {

		// One of Provider/LoginName, Oauth2Token, or AuthKey is set.
		Provider, LoginName string
		Oauth2Token         *Oauth2Token
		AuthKey             string
		// contains filtered or unexported fields
	}
	// Expiry optionally specifies the requested key expiry.
	// The server policy may override.
	// As a special case, if Expiry is in the past and NodeKey is
	// the node's current key, the key is expired.
	Expiry   time.Time
	Followup string // response waits until AuthURL is visited
	Hostinfo *Hostinfo

	// Ephemeral is whether the client is requesting that this
	// node be considered ephemeral and be automatically deleted
	// when it stops being active.
	Ephemeral bool `json:",omitempty"`

	// The following fields are not used for SignatureNone and are required for
	// SignatureV1:
	SignatureType SignatureType `json:",omitempty"`
	Timestamp     *time.Time    `json:",omitempty"` // creation time of request to prevent replay
	DeviceCert    []byte        `json:",omitempty"` // X.509 certificate for client device
	Signature     []byte        `json:",omitempty"` // as described by SignatureType
	// contains filtered or unexported fields
}

RegisterRequest is sent by a client to register the key for a node. It is encoded to JSON, encrypted with golang.org/x/crypto/nacl/box, using the local machine key, and sent to: 

https://login.tailscale.com/machine/<mkey hex>

func (*RegisterRequest) Clone 

func (req *RegisterRequest) Clone() *RegisterRequest

Clone makes a deep copy of RegisterRequest. The result aliases no memory with the original.

TODO: extend cmd/cloner to generate this method.

type RegisterResponse 

type RegisterResponse struct {
	User              User
	Login             Login
	NodeKeyExpired    bool   // if true, the NodeKey needs to be replaced
	MachineAuthorized bool   // TODO(crawshaw): move to using MachineStatus
	AuthURL           string // if set, authorization pending

	// Error indiciates that authorization failed. If this is non-empty,
	// other status fields should be ignored.
	Error string
}

RegisterResponse is returned by the server in response to a RegisterRequest.

func (*RegisterResponse) Clone added in v1.2.0 

func (src *RegisterResponse) Clone() *RegisterResponse

Clone makes a deep copy of RegisterResponse. The result aliases no memory with the original.

type Service 

type Service struct {
	Proto       ServiceProto // TCP or UDP
	Port        uint16       // port number service is listening on
	Description string       `json:",omitempty"` // text description of service
	// contains filtered or unexported fields
}

type ServiceProto 

type ServiceProto string

type SetDNSRequest added in v1.10.0 

type SetDNSRequest struct {
	// Version indicates what level of SetDNSRequest functionality
	// the client understands. Currently this type only has
	// one version; this field should always be 1 for now.
	Version int

	// NodeKey is the client's current node key.
	NodeKey key.NodePublic

	// Name is the domain name for which to create a record.
	// For ACME DNS-01 challenges, it should be one of the domains
	// in MapResponse.DNSConfig.CertDomains with the prefix
	// "_acme-challenge.".
	Name string

	// Type is the DNS record type. For ACME DNS-01 challenges, it
	// should be "TXT".
	Type string

	// Value is the value to add.
	Value string
}

SetDNSRequest is a request to add a DNS record.

This is used for ACME DNS-01 challenges (so people can use LetsEncrypt, etc).

The request is encoded to JSON, encrypted with golang.org/x/crypto/nacl/box, using the local machine key, and sent to: 

https://login.tailscale.com/machine/<mkey hex>/set-dns

type SignatureType added in v1.8.0 

type SignatureType int

SignatureType specifies a scheme for signing RegisterRequest messages. It specifies the crypto algorithms to use, the contents of what is signed, and any other relevant details. Historically, requests were unsigned so the zero value is SignatureNone.

func (SignatureType) MarshalText added in v1.8.0 

func (st SignatureType) MarshalText() ([]byte, error)

func (SignatureType) String added in v1.8.0 

func (st SignatureType) String() string

func (*SignatureType) UnmarshalText added in v1.8.0 

func (st *SignatureType) UnmarshalText(b []byte) error

type StableID added in v1.4.0 

type StableID string

type StableNodeID added in v1.4.0 

type StableNodeID StableID

func (StableNodeID) IsZero added in v1.4.0 

func (u StableNodeID) IsZero() bool

type User 

type User struct {
	ID            UserID
	LoginName     string `json:"-"` // not stored, filled from Login // TODO REMOVE
	DisplayName   string // if non-empty overrides Login field
	ProfilePicURL string // if non-empty overrides Login field
	Domain        string
	Logins        []LoginID
	Created       time.Time
}

User is an IPN user.

A user can have multiple logins associated with it (e.g. gmail and github oauth). (Note: none of our UIs support this yet.)

Some properties are inhereted from the logins and can be overridden, such as display name and profile picture.

Other properties must be the same for all logins associated with a user. In particular: domain. If a user has a "tailscale.io" domain login, they cannot have a general gmail address login associated with the user.

func (*User) Clone 

func (src *User) Clone() *User

Clone makes a deep copy of User. The result aliases no memory with the original.

type UserID 

type UserID ID

func (UserID) IsZero added in v1.2.0 

func (u UserID) IsZero() bool

func (UserID) String 

func (id UserID) String() string

type UserProfile 

type UserProfile struct {
	ID            UserID
	LoginName     string // "alice@smith.com"; for display purposes only (provider is not listed)
	DisplayName   string // "Alice Smith"
	ProfilePicURL string

	// Roles exists for legacy reasons, to keep old macOS clients
	// happy. It JSON marshals as [].
	Roles emptyStructJSONSlice
}

A UserProfile is display-friendly data for a user. It includes the LoginName for display purposes but *not* the Provider. It also includes derived data from one of the user's logins.

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