mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-04 23:45:34 +00:00
fa2fbaf3aa
Signed-off-by: Maisem Ali <maisem@tailscale.com>
1761 lines
62 KiB
Go
1761 lines
62 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package tailcfg
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//go:generate go run tailscale.com/cmd/viewer --type=User,Node,Hostinfo,NetInfo,Login,DNSConfig,RegisterResponse,DERPRegion,DERPMap,DERPNode,SSHRule,SSHPrincipal --clonefunc
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import (
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"encoding/hex"
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"errors"
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"fmt"
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"net/netip"
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"reflect"
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"strings"
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"time"
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"tailscale.com/types/dnstype"
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"tailscale.com/types/key"
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"tailscale.com/types/opt"
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"tailscale.com/types/structs"
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"tailscale.com/util/dnsname"
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)
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// CapabilityVersion represents the client's capability level. That
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// is, it can be thought of as the client's simple version number: a
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// single monotonically increasing integer, rather than the relatively
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// complex x.y.z-xxxxx semver+hash(es). Whenever the client gains a
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// capability or wants to negotiate a change in semantics with the
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// server (control plane), bump this number and document what's new.
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//
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// Previously (prior to 2022-03-06), it was known as the "MapRequest
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// version" or "mapVer" or "map cap" and that name and usage persists
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// in places.
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type CapabilityVersion int
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// CurrentCapabilityVersion is the current capability version of the codebase.
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//
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// History of versions:
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// 3: implicit compression, keep-alives
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// 4: opt-in keep-alives via KeepAlive field, opt-in compression via Compress
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// 5: 2020-10-19, implies IncludeIPv6, delta Peers/UserProfiles, supports MagicDNS
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// 6: 2020-12-07: means MapResponse.PacketFilter nil means unchanged
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// 7: 2020-12-15: FilterRule.SrcIPs accepts CIDRs+ranges, doesn't warn about 0.0.0.0/::
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// 8: 2020-12-19: client can buggily receive IPv6 addresses and routes if beta enabled server-side
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// 9: 2020-12-30: client doesn't auto-add implicit search domains from peers; only DNSConfig.Domains
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// 10: 2021-01-17: client understands MapResponse.PeerSeenChange
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// 11: 2021-03-03: client understands IPv6, multiple default routes, and goroutine dumping
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// 12: 2021-03-04: client understands PingRequest
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// 13: 2021-03-19: client understands FilterRule.IPProto
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// 14: 2021-04-07: client understands DNSConfig.Routes and DNSConfig.Resolvers
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// 15: 2021-04-12: client treats nil MapResponse.DNSConfig as meaning unchanged
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// 16: 2021-04-15: client understands Node.Online, MapResponse.OnlineChange
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// 17: 2021-04-18: MapResponse.Domain empty means unchanged
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// 18: 2021-04-19: MapResponse.Node nil means unchanged (all fields now omitempty)
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// 19: 2021-04-21: MapResponse.Debug.SleepSeconds
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// 20: 2021-06-11: MapResponse.LastSeen used even less (https://github.com/tailscale/tailscale/issues/2107)
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// 21: 2021-06-15: added MapResponse.DNSConfig.CertDomains
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// 22: 2021-06-16: added MapResponse.DNSConfig.ExtraRecords
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// 23: 2021-08-25: DNSConfig.Routes values may be empty (for ExtraRecords support in 1.14.1+)
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// 24: 2021-09-18: MapResponse.Health from control to node; node shows in "tailscale status"
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// 25: 2021-11-01: MapResponse.Debug.Exit
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// 26: 2022-01-12: (nothing, just bumping for 1.20.0)
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// 27: 2022-02-18: start of SSHPolicy being respected
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// 28: 2022-03-09: client can communicate over Noise.
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// 29: 2022-03-21: MapResponse.PopBrowserURL
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// 30: 2022-03-22: client can request id tokens.
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// 31: 2022-04-15: PingRequest & PingResponse TSMP & disco support
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// 32: 2022-04-17: client knows FilterRule.CapMatch
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// 33: 2022-07-20: added MapResponse.PeersChangedPatch (DERPRegion + Endpoints)
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const CurrentCapabilityVersion CapabilityVersion = 33
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type StableID string
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type ID int64
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type UserID ID
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func (u UserID) IsZero() bool {
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return u == 0
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}
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type LoginID ID
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func (u LoginID) IsZero() bool {
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return u == 0
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}
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type NodeID ID
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func (u NodeID) IsZero() bool {
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return u == 0
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}
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type StableNodeID StableID
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func (u StableNodeID) IsZero() bool {
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return u == ""
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}
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// User is an IPN user.
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//
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// A user can have multiple logins associated with it (e.g. gmail and github oauth).
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// (Note: none of our UIs support this yet.)
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//
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// Some properties are inhereted from the logins and can be overridden, such as
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// display name and profile picture.
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//
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// Other properties must be the same for all logins associated with a user.
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// In particular: domain. If a user has a "tailscale.io" domain login, they cannot
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// have a general gmail address login associated with the user.
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type User struct {
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ID UserID
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LoginName string `json:"-"` // not stored, filled from Login // TODO REMOVE
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DisplayName string // if non-empty overrides Login field
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ProfilePicURL string // if non-empty overrides Login field
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Domain string
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Logins []LoginID
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Created time.Time
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}
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type Login struct {
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_ structs.Incomparable
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ID LoginID
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Provider string
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LoginName string
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DisplayName string
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ProfilePicURL string
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Domain string
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}
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// A UserProfile is display-friendly data for a user.
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// It includes the LoginName for display purposes but *not* the Provider.
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// It also includes derived data from one of the user's logins.
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type UserProfile struct {
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ID UserID
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LoginName string // "alice@smith.com"; for display purposes only (provider is not listed)
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DisplayName string // "Alice Smith"
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ProfilePicURL string
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// Roles exists for legacy reasons, to keep old macOS clients
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// happy. It JSON marshals as [].
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Roles emptyStructJSONSlice
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}
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type emptyStructJSONSlice struct{}
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var emptyJSONSliceBytes = []byte("[]")
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func (emptyStructJSONSlice) MarshalJSON() ([]byte, error) {
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return emptyJSONSliceBytes, nil
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}
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func (emptyStructJSONSlice) UnmarshalJSON([]byte) error { return nil }
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type Node struct {
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ID NodeID
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StableID StableNodeID
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Name string // DNS
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// User is the user who created the node. If ACL tags are in
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// use for the node then it doesn't reflect the ACL identity
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// that the node is running as.
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User UserID
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// Sharer, if non-zero, is the user who shared this node, if different than User.
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Sharer UserID `json:",omitempty"`
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Key key.NodePublic
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KeyExpiry time.Time
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Machine key.MachinePublic
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DiscoKey key.DiscoPublic
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Addresses []netip.Prefix // IP addresses of this Node directly
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AllowedIPs []netip.Prefix // range of IP addresses to route to this node
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Endpoints []string `json:",omitempty"` // IP+port (public via STUN, and local LANs)
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DERP string `json:",omitempty"` // DERP-in-IP:port ("127.3.3.40:N") endpoint
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Hostinfo HostinfoView
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Created time.Time
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// Tags are the list of ACL tags applied to this node.
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// Tags take the form of `tag:<value>` where value starts
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// with a letter and only contains alphanumerics and dashes `-`.
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// Some valid tag examples:
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// `tag:prod`
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// `tag:database`
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// `tag:lab-1`
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Tags []string `json:",omitempty"`
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// PrimaryRoutes are the routes from AllowedIPs that this node
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// is currently the primary subnet router for, as determined
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// by the control plane. It does not include the self address
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// values from Addresses that are in AllowedIPs.
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PrimaryRoutes []netip.Prefix `json:",omitempty"`
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// LastSeen is when the node was last online. It is not
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// updated when Online is true. It is nil if the current
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// node doesn't have permission to know, or the node
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// has never been online.
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LastSeen *time.Time `json:",omitempty"`
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// Online is whether the node is currently connected to the
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// coordination server. A value of nil means unknown, or the
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// current node doesn't have permission to know.
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Online *bool `json:",omitempty"`
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KeepAlive bool `json:",omitempty"` // open and keep open a connection to this peer
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MachineAuthorized bool `json:",omitempty"` // TODO(crawshaw): replace with MachineStatus
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// Capabilities are capabilities that the node has.
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// They're free-form strings, but should be in the form of URLs/URIs
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// such as:
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// "https://tailscale.com/cap/is-admin"
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// "https://tailscale.com/cap/file-sharing"
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Capabilities []string `json:",omitempty"`
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// The following three computed fields hold the various names that can
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// be used for this node in UIs. They are populated from controlclient
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// (not from control) by calling node.InitDisplayNames. These can be
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// used directly or accessed via node.DisplayName or node.DisplayNames.
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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)
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computedHostIfDifferent string // hostname, if different than ComputedName, otherwise empty
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ComputedNameWithHost string `json:",omitempty"` // either "ComputedName" or "ComputedName (computedHostIfDifferent)", if computedHostIfDifferent is set
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}
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// DisplayName returns the user-facing name for a node which should
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// be shown in client UIs.
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//
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// Parameter forOwner specifies whether the name is requested by
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// the owner of the node. When forOwner is false, the hostname is
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// never included in the return value.
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//
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// Return value is either either "Name" or "Name (Hostname)", where
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// Name is the node's MagicDNS base name (for normal non-shared-in
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// nodes), FQDN (without trailing dot, for shared-in nodes), or
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// Hostname (if no MagicDNS). Hostname is only included in the
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// return value if it varies from Name and forOwner is provided true.
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//
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// DisplayName is only valid if InitDisplayNames has been called.
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func (n *Node) DisplayName(forOwner bool) string {
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if forOwner {
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return n.ComputedNameWithHost
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}
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return n.ComputedName
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}
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// DisplayName returns the decomposed user-facing name for a node.
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//
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// Parameter forOwner specifies whether the name is requested by
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// the owner of the node. When forOwner is false, hostIfDifferent
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// is always returned empty.
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//
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// Return value name is the node's primary name, populated with the
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// node's MagicDNS base name (for normal non-shared-in nodes), FQDN
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// (without trailing dot, for shared-in nodes), or Hostname (if no
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// MagicDNS).
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//
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// Return value hostIfDifferent, when non-empty, is the node's
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// hostname. hostIfDifferent is only populated when the hostname
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// varies from name and forOwner is provided as true.
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//
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// DisplayNames is only valid if InitDisplayNames has been called.
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func (n *Node) DisplayNames(forOwner bool) (name, hostIfDifferent string) {
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if forOwner {
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return n.ComputedName, n.computedHostIfDifferent
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}
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return n.ComputedName, ""
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}
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// InitDisplayNames computes and populates n's display name
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// fields: n.ComputedName, n.computedHostIfDifferent, and
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// n.ComputedNameWithHost.
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func (n *Node) InitDisplayNames(networkMagicDNSSuffix string) {
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name := dnsname.TrimSuffix(n.Name, networkMagicDNSSuffix)
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var hostIfDifferent string
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if n.Hostinfo.Valid() {
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hostIfDifferent = dnsname.SanitizeHostname(n.Hostinfo.Hostname())
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}
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if strings.EqualFold(name, hostIfDifferent) {
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hostIfDifferent = ""
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}
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if name == "" {
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if hostIfDifferent != "" {
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name = hostIfDifferent
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hostIfDifferent = ""
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} else {
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name = n.Key.String()
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}
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}
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var nameWithHost string
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if hostIfDifferent != "" {
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nameWithHost = fmt.Sprintf("%s (%s)", name, hostIfDifferent)
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} else {
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nameWithHost = name
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}
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n.ComputedName = name
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n.computedHostIfDifferent = hostIfDifferent
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n.ComputedNameWithHost = nameWithHost
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}
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type MachineStatus int
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const (
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MachineUnknown = MachineStatus(iota)
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MachineUnauthorized // server has yet to approve
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MachineAuthorized // server has approved
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MachineInvalid // server has explicitly rejected this machine key
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)
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func (m MachineStatus) MarshalText() ([]byte, error) {
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return []byte(m.String()), nil
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}
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func (m *MachineStatus) UnmarshalText(b []byte) error {
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switch string(b) {
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case "machine-unknown":
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*m = MachineUnknown
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case "machine-unauthorized":
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*m = MachineUnauthorized
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case "machine-authorized":
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*m = MachineAuthorized
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case "machine-invalid":
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*m = MachineInvalid
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default:
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var val int
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if _, err := fmt.Sscanf(string(b), "machine-unknown(%d)", &val); err != nil {
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*m = MachineStatus(val)
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} else {
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*m = MachineUnknown
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}
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}
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return nil
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}
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func (m MachineStatus) String() string {
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switch m {
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case MachineUnknown:
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return "machine-unknown"
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case MachineUnauthorized:
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return "machine-unauthorized"
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case MachineAuthorized:
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return "machine-authorized"
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case MachineInvalid:
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return "machine-invalid"
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default:
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return fmt.Sprintf("machine-unknown(%d)", int(m))
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}
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}
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func isNum(b byte) bool {
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return b >= '0' && b <= '9'
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}
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func isAlpha(b byte) bool {
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return (b >= 'A' && b <= 'Z') || (b >= 'a' && b <= 'z')
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}
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// CheckTag validates tag for use as an ACL tag.
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// For now we allow only ascii alphanumeric tags, and they need to start
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// with a letter. No unicode shenanigans allowed, and we reserve punctuation
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// marks other than '-' for a possible future URI scheme.
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//
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// Because we're ignoring unicode entirely, we can treat utf-8 as a series of
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// bytes. Anything >= 128 is disqualified anyway.
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//
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// We might relax these rules later.
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func CheckTag(tag string) error {
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if !strings.HasPrefix(tag, "tag:") {
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return errors.New("tags must start with 'tag:'")
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}
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tag = tag[4:]
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if tag == "" {
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return errors.New("tag names must not be empty")
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}
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if !isAlpha(tag[0]) {
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return errors.New("tag names must start with a letter, after 'tag:'")
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}
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for _, b := range []byte(tag) {
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if !isNum(b) && !isAlpha(b) && b != '-' {
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return errors.New("tag names can only contain numbers, letters, or dashes")
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}
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}
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return nil
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}
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// CheckRequestTags checks that all of h.RequestTags are valid.
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func (h *Hostinfo) CheckRequestTags() error {
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if h == nil {
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return nil
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}
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for _, tag := range h.RequestTags {
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if err := CheckTag(tag); err != nil {
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return fmt.Errorf("tag(%#v): %w", tag, err)
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}
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}
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return nil
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}
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// ServiceProto is a service type. It's usually
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// TCP ("tcp") or UDP ("udp"), but it can also have
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// meta service values as defined in Service.Proto.
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type ServiceProto string
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const (
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TCP = ServiceProto("tcp")
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UDP = ServiceProto("udp")
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PeerAPI4 = ServiceProto("peerapi4")
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PeerAPI6 = ServiceProto("peerapi6")
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PeerAPIDNS = ServiceProto("peerapi-dns-proxy")
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)
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// Service represents a service running on a node.
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type Service struct {
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_ structs.Incomparable
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// Proto is the type of service. It's usually the constant TCP
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// or UDP ("tcp" or "udp"), but it can also be one of the
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// following meta service values:
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//
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// * "peerapi4": peerapi is available on IPv4; Port is the
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// port number that the peerapi is running on the
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// node's Tailscale IPv4 address.
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// * "peerapi6": peerapi is available on IPv6; Port is the
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// port number that the peerapi is running on the
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// node's Tailscale IPv6 address.
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// * "peerapi-dns": the local peerapi service supports
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// being a DNS proxy (when the node is an exit
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// node). For this service, the Port number is really
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// the version number of the service.
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Proto ServiceProto
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// Port is the port number.
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//
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// For Proto "peerapi-dns", it's the version number of the DNS proxy,
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// currently 1.
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Port uint16
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// Description is the textual description of the service,
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// usually the process name that's running.
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Description string `json:",omitempty"`
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// TODO(apenwarr): allow advertising services on subnet IPs?
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// TODO(apenwarr): add "tags" here for each service?
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}
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// Hostinfo contains a summary of a Tailscale host.
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//
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// Because it contains pointers (slices), this type should not be used
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// as a value type.
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type Hostinfo struct {
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IPNVersion string `json:",omitempty"` // version of this code
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FrontendLogID string `json:",omitempty"` // logtail ID of frontend instance
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BackendLogID string `json:",omitempty"` // logtail ID of backend instance
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OS string `json:",omitempty"` // operating system the client runs on (a version.OS value)
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OSVersion string `json:",omitempty"` // operating system version, with optional distro prefix ("Debian 10.4", "Windows 10 Pro 10.0.19041")
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Desktop opt.Bool `json:",omitempty"` // if a desktop was detected on Linux
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Package string `json:",omitempty"` // Tailscale package to disambiguate ("choco", "appstore", etc; "" for unknown)
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DeviceModel string `json:",omitempty"` // mobile phone model ("Pixel 3a", "iPhone12,3")
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Hostname string `json:",omitempty"` // name of the host the client runs on
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ShieldsUp bool `json:",omitempty"` // indicates whether the host is blocking incoming connections
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ShareeNode bool `json:",omitempty"` // indicates this node exists in netmap because it's owned by a shared-to user
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GoArch string `json:",omitempty"` // the host's GOARCH value (of the running binary)
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RoutableIPs []netip.Prefix `json:",omitempty"` // set of IP ranges this client can route
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RequestTags []string `json:",omitempty"` // set of ACL tags this node wants to claim
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Services []Service `json:",omitempty"` // services advertised by this machine
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NetInfo *NetInfo `json:",omitempty"`
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SSH_HostKeys []string `json:"sshHostKeys,omitempty"` // if advertised
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Cloud string `json:",omitempty"`
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// NOTE: any new fields containing pointers in this type
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// require changes to Hostinfo.Equal.
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}
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// TailscaleSSHEnabled reports whether or not this node is acting as a
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// Tailscale SSH server.
|
|
func (hi *Hostinfo) TailscaleSSHEnabled() bool {
|
|
// Currently, we use `SSH_HostKeys` as a proxy for this. However, we may later
|
|
// include non-Tailscale host keys, and will add a separate flag to rely on.
|
|
return hi != nil && len(hi.SSH_HostKeys) > 0
|
|
}
|
|
|
|
func (v HostinfoView) TailscaleSSHEnabled() bool { return v.ж.TailscaleSSHEnabled() }
|
|
|
|
// NetInfo contains information about the host's network state.
|
|
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 the host has IPv6 internet connectivity.
|
|
WorkingIPv6 opt.Bool
|
|
|
|
// OSHasIPv6 is whether the OS supports IPv6 at all, regardless of
|
|
// whether IPv6 internet connectivity is available.
|
|
OSHasIPv6 opt.Bool
|
|
|
|
// WorkingUDP is whether the host has UDP internet connectivity.
|
|
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"`
|
|
|
|
// Update BasicallyEqual when adding fields.
|
|
}
|
|
|
|
func (ni *NetInfo) String() string {
|
|
if ni == nil {
|
|
return "NetInfo(nil)"
|
|
}
|
|
return fmt.Sprintf("NetInfo{varies=%v hairpin=%v ipv6=%v udp=%v derp=#%v portmap=%v link=%q}",
|
|
ni.MappingVariesByDestIP, ni.HairPinning, ni.WorkingIPv6,
|
|
ni.WorkingUDP, ni.PreferredDERP,
|
|
ni.portMapSummary(),
|
|
ni.LinkType)
|
|
}
|
|
|
|
func (ni *NetInfo) portMapSummary() string {
|
|
if !ni.HavePortMap && ni.UPnP == "" && ni.PMP == "" && ni.PCP == "" {
|
|
return "?"
|
|
}
|
|
var prefix string
|
|
if ni.HavePortMap {
|
|
prefix = "active-"
|
|
}
|
|
return prefix + conciseOptBool(ni.UPnP, "U") + conciseOptBool(ni.PMP, "M") + conciseOptBool(ni.PCP, "C")
|
|
}
|
|
|
|
func conciseOptBool(b opt.Bool, trueVal string) string {
|
|
if b == "" {
|
|
return "_"
|
|
}
|
|
v, ok := b.Get()
|
|
if !ok {
|
|
return "x"
|
|
}
|
|
if v {
|
|
return trueVal
|
|
}
|
|
return ""
|
|
}
|
|
|
|
// BasicallyEqual reports whether ni and ni2 are basically equal, ignoring
|
|
// changes in DERP ServerLatency & RegionLatency.
|
|
func (ni *NetInfo) BasicallyEqual(ni2 *NetInfo) bool {
|
|
if (ni == nil) != (ni2 == nil) {
|
|
return false
|
|
}
|
|
if ni == nil {
|
|
return true
|
|
}
|
|
return ni.MappingVariesByDestIP == ni2.MappingVariesByDestIP &&
|
|
ni.HairPinning == ni2.HairPinning &&
|
|
ni.WorkingIPv6 == ni2.WorkingIPv6 &&
|
|
ni.OSHasIPv6 == ni2.OSHasIPv6 &&
|
|
ni.WorkingUDP == ni2.WorkingUDP &&
|
|
ni.HavePortMap == ni2.HavePortMap &&
|
|
ni.UPnP == ni2.UPnP &&
|
|
ni.PMP == ni2.PMP &&
|
|
ni.PCP == ni2.PCP &&
|
|
ni.PreferredDERP == ni2.PreferredDERP &&
|
|
ni.LinkType == ni2.LinkType
|
|
}
|
|
|
|
// Equal reports whether h and h2 are equal.
|
|
func (h *Hostinfo) Equal(h2 *Hostinfo) bool {
|
|
if h == nil && h2 == nil {
|
|
return true
|
|
}
|
|
if (h == nil) != (h2 == nil) {
|
|
return false
|
|
}
|
|
return reflect.DeepEqual(h, h2)
|
|
}
|
|
|
|
// HowUnequal returns a list of paths through Hostinfo where h and h2 differ.
|
|
// If they differ in nil-ness, the path is "nil", otherwise the path is like
|
|
// "ShieldsUp" or "NetInfo.nil" or "NetInfo.PCP".
|
|
func (h *Hostinfo) HowUnequal(h2 *Hostinfo) (path []string) {
|
|
return appendStructPtrDiff(nil, "", reflect.ValueOf(h), reflect.ValueOf(h2))
|
|
}
|
|
|
|
func appendStructPtrDiff(base []string, pfx string, p1, p2 reflect.Value) (ret []string) {
|
|
ret = base
|
|
if p1.IsNil() && p2.IsNil() {
|
|
return base
|
|
}
|
|
mkPath := func(b string) string {
|
|
if pfx == "" {
|
|
return b
|
|
}
|
|
return pfx + "." + b
|
|
}
|
|
if p1.IsNil() || p2.IsNil() {
|
|
return append(base, mkPath("nil"))
|
|
}
|
|
v1, v2 := p1.Elem(), p2.Elem()
|
|
t := v1.Type()
|
|
for i, n := 0, t.NumField(); i < n; i++ {
|
|
sf := t.Field(i)
|
|
switch sf.Type.Kind() {
|
|
case reflect.String:
|
|
if v1.Field(i).String() != v2.Field(i).String() {
|
|
ret = append(ret, mkPath(sf.Name))
|
|
}
|
|
continue
|
|
case reflect.Bool:
|
|
if v1.Field(i).Bool() != v2.Field(i).Bool() {
|
|
ret = append(ret, mkPath(sf.Name))
|
|
}
|
|
continue
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
if v1.Field(i).Int() != v2.Field(i).Int() {
|
|
ret = append(ret, mkPath(sf.Name))
|
|
}
|
|
continue
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
if v1.Field(i).Uint() != v2.Field(i).Uint() {
|
|
ret = append(ret, mkPath(sf.Name))
|
|
}
|
|
continue
|
|
case reflect.Slice, reflect.Map:
|
|
if !reflect.DeepEqual(v1.Field(i).Interface(), v2.Field(i).Interface()) {
|
|
ret = append(ret, mkPath(sf.Name))
|
|
}
|
|
continue
|
|
case reflect.Ptr:
|
|
if sf.Type.Elem().Kind() == reflect.Struct {
|
|
ret = appendStructPtrDiff(ret, sf.Name, v1.Field(i), v2.Field(i))
|
|
continue
|
|
}
|
|
}
|
|
panic(fmt.Sprintf("unsupported type at %s: %s", mkPath(sf.Name), sf.Type.String()))
|
|
}
|
|
return ret
|
|
}
|
|
|
|
// 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.
|
|
type SignatureType int
|
|
|
|
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
|
|
)
|
|
|
|
func (st SignatureType) MarshalText() ([]byte, error) {
|
|
return []byte(st.String()), nil
|
|
}
|
|
|
|
func (st *SignatureType) UnmarshalText(b []byte) error {
|
|
switch string(b) {
|
|
case "signature-none":
|
|
*st = SignatureNone
|
|
case "signature-v1":
|
|
*st = SignatureV1
|
|
case "signature-v2":
|
|
*st = SignatureV2
|
|
default:
|
|
var val int
|
|
if _, err := fmt.Sscanf(string(b), "signature-unknown(%d)", &val); err != nil {
|
|
*st = SignatureType(val)
|
|
} else {
|
|
*st = SignatureUnknown
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (st SignatureType) String() string {
|
|
switch st {
|
|
case SignatureNone:
|
|
return "signature-none"
|
|
case SignatureUnknown:
|
|
return "signature-unknown"
|
|
case SignatureV1:
|
|
return "signature-v1"
|
|
case SignatureV2:
|
|
return "signature-v2"
|
|
default:
|
|
return fmt.Sprintf("signature-unknown(%d)", int(st))
|
|
}
|
|
}
|
|
|
|
// 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>
|
|
type RegisterRequest struct {
|
|
_ structs.Incomparable
|
|
|
|
// Version is the client's capabilities when using the Noise
|
|
// transport.
|
|
//
|
|
// When using the original nacl crypto_box transport, the
|
|
// value must be 1.
|
|
Version CapabilityVersion
|
|
|
|
NodeKey key.NodePublic
|
|
OldNodeKey key.NodePublic
|
|
Auth struct {
|
|
_ structs.Incomparable
|
|
// One of Provider/LoginName, Oauth2Token, or AuthKey is set.
|
|
Provider, LoginName string
|
|
Oauth2Token *Oauth2Token
|
|
AuthKey string
|
|
}
|
|
// 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
|
|
}
|
|
|
|
// Clone makes a deep copy of RegisterRequest.
|
|
// The result aliases no memory with the original.
|
|
//
|
|
// TODO: extend cmd/cloner to generate this method.
|
|
func (req *RegisterRequest) Clone() *RegisterRequest {
|
|
if req == nil {
|
|
return nil
|
|
}
|
|
res := new(RegisterRequest)
|
|
*res = *req
|
|
if res.Hostinfo != nil {
|
|
res.Hostinfo = res.Hostinfo.Clone()
|
|
}
|
|
if res.Auth.Oauth2Token != nil {
|
|
tok := *res.Auth.Oauth2Token
|
|
res.Auth.Oauth2Token = &tok
|
|
}
|
|
res.DeviceCert = append(res.DeviceCert[:0:0], res.DeviceCert...)
|
|
res.Signature = append(res.Signature[:0:0], res.Signature...)
|
|
return res
|
|
}
|
|
|
|
// RegisterResponse is returned by the server in response to a RegisterRequest.
|
|
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
|
|
}
|
|
|
|
// EndpointType distinguishes different sources of MapRequest.Endpoint values.
|
|
type EndpointType int
|
|
|
|
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
|
|
)
|
|
|
|
func (et EndpointType) String() string {
|
|
switch et {
|
|
case EndpointUnknownType:
|
|
return "?"
|
|
case EndpointLocal:
|
|
return "local"
|
|
case EndpointSTUN:
|
|
return "stun"
|
|
case EndpointPortmapped:
|
|
return "portmap"
|
|
case EndpointSTUN4LocalPort:
|
|
return "stun4localport"
|
|
}
|
|
return "other"
|
|
}
|
|
|
|
// 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 Endpoint struct {
|
|
Addr netip.AddrPort
|
|
Type EndpointType
|
|
}
|
|
|
|
// 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 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 the CapabilityVersion type's docs.
|
|
Version CapabilityVersion
|
|
|
|
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.
|
|
//
|
|
// The behavior of OmitPeers being true varies based on Stream and ReadOnly:
|
|
//
|
|
// 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.
|
|
// In this case, the server can omit the entire response; the client
|
|
// only checks the HTTP response status code.
|
|
//
|
|
// If OmitPeers is true, Stream is false, but ReadOnly is true,
|
|
// then all the response fields are included. (This is what the client does
|
|
// when initially fetching the DERP map.)
|
|
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.
|
|
DebugFlags []string `json:",omitempty"`
|
|
}
|
|
|
|
// PortRange represents a range of UDP or TCP port numbers.
|
|
type PortRange struct {
|
|
First uint16
|
|
Last uint16
|
|
}
|
|
|
|
var PortRangeAny = PortRange{0, 65535}
|
|
|
|
// NetPortRange represents a range of ports that's allowed for one or more IPs.
|
|
type NetPortRange struct {
|
|
_ structs.Incomparable
|
|
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
|
|
}
|
|
|
|
// CapGrant grants capabilities in a FilterRule.
|
|
type CapGrant struct {
|
|
// Dsts are the destination IP ranges that this capabilty
|
|
// grant matches.
|
|
Dsts []netip.Prefix
|
|
|
|
// Caps are the capabilities the source IP matched by
|
|
// FilterRule.SrcIPs are granted to the destination IP,
|
|
// matched by Dsts.
|
|
Caps []string `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 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 CapabilityVersion 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).
|
|
//
|
|
// CapGrant and DstPorts are mutually exclusive: at most one can be non-nil.
|
|
DstPorts []NetPortRange `json:",omitempty"`
|
|
|
|
// 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"`
|
|
|
|
// CapGrant, if non-empty, are the capabilities to
|
|
// conditionally grant to the source IP in SrcIPs.
|
|
//
|
|
// Think of DstPorts as "capabilities for networking" and
|
|
// CapGrant as arbitrary application-defined capabilities
|
|
// defined between the admin's ACLs and the application
|
|
// doing WhoIs lookups, looking up the remote IP address's
|
|
// application-level capabilities.
|
|
//
|
|
// CapGrant and DstPorts are mutually exclusive: at most one can be non-nil.
|
|
CapGrant []CapGrant `json:",omitempty"`
|
|
}
|
|
|
|
var FilterAllowAll = []FilterRule{
|
|
{
|
|
SrcIPs: []string{"*"},
|
|
SrcBits: nil,
|
|
DstPorts: []NetPortRange{{
|
|
IP: "*",
|
|
Bits: nil,
|
|
Ports: PortRange{0, 65535},
|
|
}},
|
|
},
|
|
}
|
|
|
|
// DNSConfig is the DNS configuration.
|
|
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"`
|
|
|
|
// The following fields are only set and used by
|
|
// MapRequest.Version >=9 and <14.
|
|
|
|
// Nameservers are the IP addresses of the nameservers to use.
|
|
Nameservers []netip.Addr `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"`
|
|
|
|
// ExitNodeFilteredSuffixes are the the DNS suffixes that the
|
|
// node, when being an exit node DNS proxy, should not answer.
|
|
//
|
|
// The entries do not contain trailing periods and are always
|
|
// all lowercase.
|
|
//
|
|
// If an entry starts with a period, it's a suffix match (but
|
|
// suffix ".a.b" doesn't match "a.b"; a prefix is required).
|
|
//
|
|
// If an entry does not start with a period, it's an exact
|
|
// match.
|
|
//
|
|
// Matches are case insensitive.
|
|
ExitNodeFilteredSet []string
|
|
}
|
|
|
|
// DNSRecord is an extra DNS record to add to MagicDNS.
|
|
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
|
|
}
|
|
|
|
// PingType is a string representing the kind of ping to perform.
|
|
type PingType string
|
|
|
|
const (
|
|
// PingDisco performs a ping, without involving IP at either end.
|
|
PingDisco PingType = "disco"
|
|
// PingTSMP performs a ping, using the IP layer, but avoiding the OS IP stack.
|
|
PingTSMP PingType = "TSMP"
|
|
// PingICMP performs a ping between two tailscale nodes using ICMP that is
|
|
// received by the target systems IP stack.
|
|
PingICMP PingType = "ICMP"
|
|
// PingPeerAPI performs a ping between two tailscale nodes using ICMP that is
|
|
// received by the target systems IP stack.
|
|
PingPeerAPI PingType = "peerapi"
|
|
)
|
|
|
|
// 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 containing a PingResponse to the URL containing results.
|
|
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 are initiated. Can be any PingType, comma
|
|
// separated, e.g. "disco,TSMP"
|
|
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 netip.Addr
|
|
}
|
|
|
|
// PingResponse provides result information for a TSMP or Disco PingRequest.
|
|
// Typically populated from an ipnstate.PingResult used in `tailscale ping`.
|
|
type PingResponse struct {
|
|
Type PingType // ping type, such as TSMP or disco.
|
|
|
|
IP string `json:",omitempty"` // ping destination
|
|
NodeIP string `json:",omitempty"` // Tailscale IP of node handling IP (different for subnet routers)
|
|
NodeName string `json:",omitempty"` // DNS name base or (possibly not unique) hostname
|
|
|
|
// Err contains a short description of error conditions if the PingRequest
|
|
// could not be fulfilled for some reason.
|
|
// e.g. "100.1.2.3 is local Tailscale IP"
|
|
Err string `json:",omitempty"`
|
|
|
|
// LatencySeconds reports measurement of the round-trip time of a message to
|
|
// the requested target, if it could be determined. If LatencySeconds is
|
|
// omitted, Err should contain information as to the cause.
|
|
LatencySeconds float64 `json:",omitempty"`
|
|
|
|
// Endpoint is the ip:port if direct UDP was used.
|
|
// It is not currently set for TSMP pings.
|
|
Endpoint string `json:",omitempty"`
|
|
|
|
// DERPRegionID is non-zero DERP region ID if DERP was used.
|
|
// It is not currently set for TSMP pings.
|
|
DERPRegionID int `json:",omitempty"`
|
|
|
|
// DERPRegionCode is the three-letter region code
|
|
// corresponding to DERPRegionID.
|
|
// It is not currently set for TSMP pings.
|
|
DERPRegionCode string `json:",omitempty"`
|
|
|
|
// PeerAPIPort is set by TSMP ping responses for peers that
|
|
// are running a peerapi server. This is the port they're
|
|
// running the server on.
|
|
PeerAPIPort uint16 `json:",omitempty"`
|
|
|
|
// IsLocalIP is whether the ping request error is due to it being
|
|
// a ping to the local node.
|
|
IsLocalIP bool `json:",omitempty"`
|
|
}
|
|
|
|
type MapResponse struct {
|
|
// KeepAlive, if set, represents an empty message just to keep
|
|
// the connection alive. When true, all other fields except
|
|
// PingRequest, ControlTime, and PopBrowserURL 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"`
|
|
|
|
// PopBrowserURL, if non-empty, is a URL for the client to
|
|
// open to complete an action. The client should dup suppress
|
|
// identical URLs and only open it once for the same URL.
|
|
PopBrowserURL string `json:",omitempty"`
|
|
|
|
// Networking
|
|
|
|
// 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"`
|
|
|
|
// PeersChangedPatch, if non-nil, means that node(s) have changed.
|
|
// This is a lighter version of the older PeersChanged support that
|
|
// only supports certain types of updates
|
|
//
|
|
// These are applied after Peers* above, but in practice the
|
|
// control server should only send these on their own, without
|
|
// the Peers* fields also set.
|
|
PeersChangedPatch []*PeerChange `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"`
|
|
|
|
// 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"`
|
|
|
|
// SSHPolicy, if non-nil, updates the SSH policy for how incoming
|
|
// SSH connections should be handled.
|
|
SSHPolicy *SSHPolicy `json:",omitempty"`
|
|
|
|
// ControlTime, if non-zero, is the current timestamp according to the control server.
|
|
ControlTime *time.Time `json:",omitempty"`
|
|
|
|
// Debug is normally nil, except for when the control server
|
|
// is setting debug settings on a node.
|
|
Debug *Debug `json:",omitempty"`
|
|
}
|
|
|
|
// Debug are instructions from the control server to the client
|
|
// to adjust debug settings.
|
|
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"`
|
|
|
|
// OneCGNATRoute controls whether the client should prefer to make one
|
|
// big CGNAT /10 route rather than a /32 per peer.
|
|
OneCGNATRoute opt.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"`
|
|
|
|
// DisableLogTail disables the logtail package. Once disabled it can't be
|
|
// re-enabled for the lifetime of the process.
|
|
DisableLogTail bool `json:",omitempty"`
|
|
|
|
// Exit optionally specifies that the client should os.Exit
|
|
// with this code.
|
|
Exit *int `json:",omitempty"`
|
|
}
|
|
|
|
func appendKey(base []byte, prefix string, k [32]byte) []byte {
|
|
ret := append(base, make([]byte, len(prefix)+64)...)
|
|
buf := ret[len(base):]
|
|
copy(buf, prefix)
|
|
hex.Encode(buf[len(prefix):], k[:])
|
|
return ret
|
|
}
|
|
|
|
func keyMarshalText(prefix string, k [32]byte) []byte {
|
|
return appendKey(nil, prefix, k)
|
|
}
|
|
|
|
func (id ID) String() string { return fmt.Sprintf("id:%x", int64(id)) }
|
|
func (id UserID) String() string { return fmt.Sprintf("userid:%x", int64(id)) }
|
|
func (id LoginID) String() string { return fmt.Sprintf("loginid:%x", int64(id)) }
|
|
func (id NodeID) String() string { return fmt.Sprintf("nodeid:%x", int64(id)) }
|
|
|
|
// Equal reports whether n and n2 are equal.
|
|
func (n *Node) Equal(n2 *Node) bool {
|
|
if n == nil && n2 == nil {
|
|
return true
|
|
}
|
|
return n != nil && n2 != nil &&
|
|
n.ID == n2.ID &&
|
|
n.StableID == n2.StableID &&
|
|
n.Name == n2.Name &&
|
|
n.User == n2.User &&
|
|
n.Sharer == n2.Sharer &&
|
|
n.Key == n2.Key &&
|
|
n.KeyExpiry.Equal(n2.KeyExpiry) &&
|
|
n.Machine == n2.Machine &&
|
|
n.DiscoKey == n2.DiscoKey &&
|
|
eqBoolPtr(n.Online, n2.Online) &&
|
|
eqCIDRs(n.Addresses, n2.Addresses) &&
|
|
eqCIDRs(n.AllowedIPs, n2.AllowedIPs) &&
|
|
eqCIDRs(n.PrimaryRoutes, n2.PrimaryRoutes) &&
|
|
eqStrings(n.Endpoints, n2.Endpoints) &&
|
|
n.DERP == n2.DERP &&
|
|
n.Hostinfo.Equal(n2.Hostinfo) &&
|
|
n.Created.Equal(n2.Created) &&
|
|
eqTimePtr(n.LastSeen, n2.LastSeen) &&
|
|
n.MachineAuthorized == n2.MachineAuthorized &&
|
|
eqStrings(n.Capabilities, n2.Capabilities) &&
|
|
n.ComputedName == n2.ComputedName &&
|
|
n.computedHostIfDifferent == n2.computedHostIfDifferent &&
|
|
n.ComputedNameWithHost == n2.ComputedNameWithHost &&
|
|
eqStrings(n.Tags, n2.Tags)
|
|
}
|
|
|
|
func eqBoolPtr(a, b *bool) bool {
|
|
if a == b { // covers nil
|
|
return true
|
|
}
|
|
if a == nil || b == nil {
|
|
return false
|
|
}
|
|
return *a == *b
|
|
|
|
}
|
|
|
|
func eqStrings(a, b []string) bool {
|
|
if len(a) != len(b) || ((a == nil) != (b == nil)) {
|
|
return false
|
|
}
|
|
for i, v := range a {
|
|
if v != b[i] {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
func eqCIDRs(a, b []netip.Prefix) bool {
|
|
if len(a) != len(b) || ((a == nil) != (b == nil)) {
|
|
return false
|
|
}
|
|
for i, v := range a {
|
|
if v != b[i] {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
func eqTimePtr(a, b *time.Time) bool {
|
|
return ((a == nil) == (b == nil)) && (a == nil || a.Equal(*b))
|
|
}
|
|
|
|
// 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 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"`
|
|
}
|
|
|
|
const (
|
|
// MapResponse.Node self capabilities.
|
|
|
|
CapabilityFileSharing = "https://tailscale.com/cap/file-sharing"
|
|
CapabilityAdmin = "https://tailscale.com/cap/is-admin"
|
|
CapabilitySSH = "https://tailscale.com/cap/ssh" // feature enabled/available
|
|
CapabilitySSHRuleIn = "https://tailscale.com/cap/ssh-rule-in" // some SSH rule reach this node
|
|
|
|
// Inter-node capabilities.
|
|
|
|
// CapabilityFileSharingSend grants the ability to receive files from a
|
|
// node that's owned by a different user.
|
|
CapabilityFileSharingSend = "https://tailscale.com/cap/file-send"
|
|
// CapabilityDebugPeer grants the ability for a peer to read this node's
|
|
// goroutines, metrics, magicsock internal state, etc.
|
|
CapabilityDebugPeer = "https://tailscale.com/cap/debug-peer"
|
|
// CapabilityWakeOnLAN grants the ability to send a Wake-On-LAN packet.
|
|
CapabilityWakeOnLAN = "https://tailscale.com/cap/wake-on-lan"
|
|
)
|
|
|
|
// 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 SetDNSRequest struct {
|
|
// Version is the client's capabilities
|
|
// (CurrentCapabilityVersion) when using the Noise transport.
|
|
//
|
|
// When using the original nacl crypto_box transport, the
|
|
// value must be 1.
|
|
Version CapabilityVersion
|
|
|
|
// 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
|
|
}
|
|
|
|
// SetDNSResponse is the response to a SetDNSRequest.
|
|
type SetDNSResponse struct{}
|
|
|
|
// SSHPolicy is the policy for how to handle incoming SSH connections
|
|
// over Tailscale.
|
|
type SSHPolicy struct {
|
|
// Rules are the rules to process for an incoming SSH connection. The first
|
|
// matching rule takes its action and stops processing further rules.
|
|
//
|
|
// When an incoming connection first starts, all rules are evaluated in
|
|
// "none" auth mode, where the client hasn't even been asked to send a
|
|
// public key. All SSHRule.Principals requiring a public key won't match. If
|
|
// a rule matches on the first pass and its Action is reject, the
|
|
// authentication fails with that action's rejection message, if any.
|
|
//
|
|
// If the first pass rule evaluation matches nothing without matching an
|
|
// Action with Reject set, the rules are considered to see whether public
|
|
// keys might still result in a match. If not, "none" auth is terminated
|
|
// before proceeding to public key mode. If so, the client is asked to try
|
|
// public key authentication and the rules are evaluated again for each of
|
|
// the client's present keys.
|
|
Rules []*SSHRule `json:"rules"`
|
|
}
|
|
|
|
// An SSH rule is a match predicate and associated action for an incoming SSH connection.
|
|
type SSHRule struct {
|
|
// RuleExpires, if non-nil, is when this rule expires.
|
|
//
|
|
// For example, a (principal,sshuser) tuple might be granted
|
|
// prompt-free SSH access for N minutes, so this rule would be
|
|
// before a expiration-free rule for the same principal that
|
|
// required an auth prompt. This permits the control plane to
|
|
// be out of the path for already-authorized SSH pairs.
|
|
//
|
|
// Once a rule matches, the lifetime of any accepting connection
|
|
// is subject to the SSHAction.SessionExpires time, if any.
|
|
RuleExpires *time.Time `json:"ruleExpires,omitempty"`
|
|
|
|
// Principals matches an incoming connection. If the connection
|
|
// matches anything in this list and also matches SSHUsers,
|
|
// then Action is applied.
|
|
Principals []*SSHPrincipal `json:"principals"`
|
|
|
|
// SSHUsers are the SSH users that this rule matches. It is a
|
|
// map from either ssh-user|"*" => local-user. The map must
|
|
// contain a key for either ssh-user or, as a fallback, "*" to
|
|
// match anything. If it does, the map entry's value is the
|
|
// actual user that's logged in.
|
|
// If the map value is the empty string (for either the
|
|
// requested SSH user or "*"), the rule doesn't match.
|
|
// If the map value is "=", it means the ssh-user should map
|
|
// directly to the local-user.
|
|
// It may be nil if the Action is reject.
|
|
SSHUsers map[string]string `json:"sshUsers"`
|
|
|
|
// Action is the outcome to task.
|
|
// A nil or invalid action means to deny.
|
|
Action *SSHAction `json:"action"`
|
|
}
|
|
|
|
// SSHPrincipal is either a particular node or a user on any node.
|
|
type SSHPrincipal struct {
|
|
// Matching any one of the following four field causes a match.
|
|
// It must also match Certs, if non-empty.
|
|
|
|
Node StableNodeID `json:"node,omitempty"`
|
|
NodeIP string `json:"nodeIP,omitempty"`
|
|
UserLogin string `json:"userLogin,omitempty"` // email-ish: foo@example.com, bar@github
|
|
Any bool `json:"any,omitempty"` // if true, match any connection
|
|
// TODO(bradfitz): add StableUserID, once that exists
|
|
|
|
// PubKeys, if non-empty, means that this SSHPrincipal only
|
|
// matches if one of these public keys is presented by the user.
|
|
//
|
|
// As a special case, if len(PubKeys) == 1 and PubKeys[0] starts
|
|
// with "https://", then it's fetched (like https://github.com/username.keys).
|
|
// In that case, the following variable expansions are also supported
|
|
// in the URL:
|
|
// * $LOGINNAME_EMAIL ("foo@bar.com" or "foo@github")
|
|
// * $LOGINNAME_LOCALPART (the "foo" from either of the above)
|
|
PubKeys []string `json:"pubKeys,omitempty"`
|
|
}
|
|
|
|
// SSHAction is how to handle an incoming connection.
|
|
// At most one field should be non-zero.
|
|
type SSHAction struct {
|
|
// Message, if non-empty, is shown to the user before the
|
|
// action occurs.
|
|
Message string `json:"message,omitempty"`
|
|
|
|
// Reject, if true, terminates the connection. This action
|
|
// has higher priority that Accept, if given.
|
|
// The reason this is exists is primarily so a response
|
|
// from HoldAndDelegate has a way to stop the poll.
|
|
Reject bool `json:"reject,omitempty"`
|
|
|
|
// Accept, if true, accepts the connection immediately
|
|
// without further prompts.
|
|
Accept bool `json:"accept,omitempty"`
|
|
|
|
// SessionDuration, if non-zero, is how long the session can stay open
|
|
// before being forcefully terminated.
|
|
SessionDuration time.Duration `json:"sessionDuration,omitempty"`
|
|
|
|
// AllowAgentForwarding, if true, allows accepted connections to forward
|
|
// the ssh agent if requested.
|
|
AllowAgentForwarding bool `json:"allowAgentForwarding,omitempty"`
|
|
|
|
// HoldAndDelegate, if non-empty, is a URL that serves an
|
|
// outcome verdict. The connection will be accepted and will
|
|
// block until the provided long-polling URL serves a new
|
|
// SSHAction JSON value. The URL must be fetched using the
|
|
// Noise transport (in package control/control{base,http}).
|
|
// If the long poll breaks before returning a complete HTTP
|
|
// response, it should be re-fetched as long as the SSH
|
|
// session is open.
|
|
//
|
|
// The following variables in the URL are expanded by tailscaled:
|
|
//
|
|
// * $SRC_NODE_IP (URL escaped)
|
|
// * $SRC_NODE_ID (Node.ID as int64 string)
|
|
// * $DST_NODE_IP (URL escaped)
|
|
// * $DST_NODE_ID (Node.ID as int64 string)
|
|
// * $SSH_USER (URL escaped, ssh user requested)
|
|
// * $LOCAL_USER (URL escaped, local user mapped)
|
|
HoldAndDelegate string `json:"holdAndDelegate,omitempty"`
|
|
|
|
// AllowLocalPortForwarding, if true, allows accepted connections
|
|
// to use local port forwarding if requested.
|
|
AllowLocalPortForwarding bool `json:"allowLocalPortForwarding,omitempty"`
|
|
}
|
|
|
|
// OverTLSPublicKeyResponse is the JSON response to /key?v=<n>
|
|
// over HTTPS (regular TLS) to the Tailscale control plane server,
|
|
// where the 'v' argument is the client's current capability version
|
|
// (previously known as the "MapRequest version").
|
|
//
|
|
// The "OverTLS" prefix is to loudly declare that this exchange
|
|
// doesn't happen over Noise and can be intercepted/MITM'ed by
|
|
// enterprise/corp proxies where the orgnanization can put TLS roots
|
|
// on devices.
|
|
type OverTLSPublicKeyResponse struct {
|
|
// LegacyPublic specifies the control plane server's original
|
|
// NaCl crypto_box machine key.
|
|
// It will be zero for sufficiently new clients, based on their
|
|
// advertised "v" parameter (the CurrentMapRequestVersion).
|
|
// In that case, only the newer Noise-based transport may be used
|
|
// using the PublicKey field.
|
|
LegacyPublicKey key.MachinePublic `json:"legacyPublicKey"`
|
|
|
|
// PublicKey specifies the server's public key for the
|
|
// Noise-based control plane protocol. (see packages
|
|
// control/controlbase and control/controlhttp)
|
|
PublicKey key.MachinePublic `json:"publicKey"`
|
|
}
|
|
|
|
// TokenRequest is a request to get an OIDC ID token for an audience.
|
|
// The token can be presented to any resource provider which offers OIDC
|
|
// Federation.
|
|
//
|
|
// It is JSON-encoded and sent over Noise to "/machine/id-token".
|
|
type TokenRequest struct {
|
|
// CapVersion is the client's current CapabilityVersion.
|
|
CapVersion CapabilityVersion
|
|
// NodeKey is the client's current node key.
|
|
NodeKey key.NodePublic
|
|
// Audience the token is being requested for.
|
|
Audience string
|
|
}
|
|
|
|
// TokenResponse is the response to a TokenRequest.
|
|
type TokenResponse struct {
|
|
// IDToken is a JWT encoding the following standard claims:
|
|
//
|
|
// `sub` | the MagicDNS name of the node
|
|
// `aud` | Audience from the request
|
|
// `exp` | Token expiry
|
|
// `iat` | Token issuance time
|
|
// `iss` | Issuer
|
|
// `jti` | Random token identifier
|
|
// `nbf` | Not before time
|
|
//
|
|
// It also encodes the following Tailscale specific claims:
|
|
//
|
|
// `key` | the node public key
|
|
// `addresses` | the Tailscale IPs of the node
|
|
// `nid` | the node ID
|
|
// `node` | the name of the node
|
|
// `domain` | the domain of the node, it has the same format as MapResponse.Domain.
|
|
// `tags` | an array of <domain:tag> on the node (like alice.github:tag:foo or example.com:tag:foo)
|
|
// `user` | user emailish (like alice.github:alice@github or example.com:bob@example.com), if not tagged
|
|
// `uid` | user ID, if not tagged
|
|
IDToken string `json:"id_token"`
|
|
}
|
|
|
|
// PeerChange is an update to a node.
|
|
type PeerChange struct {
|
|
// NodeID is the node ID being mutated. If the NodeID is not
|
|
// known in the current netmap, this update should be
|
|
// ignored. (But the server will try not to send such useless
|
|
// updates.)
|
|
NodeID NodeID
|
|
|
|
// DERPRegion, if non-zero, means that NodeID's home DERP
|
|
// region ID is now this number.
|
|
DERPRegion int `json:",omitempty"`
|
|
|
|
// Endpoints, if non-empty, means that NodeID's UDP Endpoints
|
|
// have changed to these.
|
|
Endpoints []string `json:",omitempty"`
|
|
}
|
|
|
|
// DerpMagicIP is a fake WireGuard endpoint IP address that means to
|
|
// use DERP. When used (in the Node.DERP field), the port number of
|
|
// the WireGuard endpoint is the DERP region ID number to use.
|
|
//
|
|
// Mnemonic: 3.3.40 are numbers above the keys D, E, R, P.
|
|
const DerpMagicIP = "127.3.3.40"
|