Commit Graph

456 Commits (9eedf86563d6395eabb4439f7b789670d328cda5)

Author SHA1 Message Date
Emmanuel T Odeke 680f8d9793 all: fix more resource leaks found by staticmajor
Updates #5706

Signed-off-by: Emmanuel T Odeke <emmanuel@orijtech.com>
2 years ago
Joe Tsai 82f5f438e0
wgengine/wgcfg: plumb down audit log IDs (#5855)
The node and domain audit log IDs are provided in the map response,
but are ultimately going to be used in wgengine since
that's the layer that manages the tstun.Wrapper.

Do the plumbing work to get this field passed down the stack.

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2 years ago
Josh Soref d4811f11a0 all: fix spelling mistakes
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
2 years ago
Brad Fitzpatrick 9bdf0cd8cd ipn/ipnlocal: add c2n /debug/{goroutines,prefs,metrics}
* and move goroutine scrubbing code to its own package for reuse
* bump capver to 45

Change-Id: I9b4dfa5af44d2ecada6cc044cd1b5674ee427575
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 8a0cb4ef20 control/controlclient: fix recent set-dns regression
SetDNS calls were broken by 6d04184325 the other day. Unreleased.

Caught by tests in another repo.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick fb4e23506f control/controlclient: stop restarting map polls on health change
At some point we started restarting map polls on health change, but we
don't remember why. Maybe it was a desperate workaround for something.
I'm not sure it ever worked.

Rather than have a haunted graveyard, remove it.

In its place, though, and somewhat as a safety backup, send those
updates over the HTTP/2 noise channel if we have one open. Then if
there was a reason that a map poll restart would help we could do it
server-side. But mostly we can gather error stats and show
machine-level health info for debugging.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 6d04184325 control/controlclient: add a noiseClient.post helper method
In prep for a future change that would've been very copy/paste-y.

And because the set-dns call doesn't currently use a context,
so timeouts/cancelations are plumbed.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Andrew Dunham e1bdbfe710
tailcfg, control/controlhttp, control/controlclient: add ControlDialPlan field (#5648)
* tailcfg, control/controlhttp, control/controlclient: add ControlDialPlan field

This field allows the control server to provide explicit information
about how to connect to it; useful if the client's link status can
change after the initial connection, or if the DNS settings pushed by
the control server break future connections.

Change-Id: I720afe6289ec27d40a41b3dcb310ec45bd7e5f3e
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2 years ago
Tom DNetto e9b98dd2e1 control/controlclient,ipn/ipnlocal: wire tka enable/disable
Signed-off-by: Tom DNetto <tom@tailscale.com>
2 years ago
Andrew Dunham 9b71008ef2
control/controlhttp: move Dial options into options struct (#5661)
This turns 'dialParams' into something more like net.Dialer, where
configuration fields are public on the struct.

Split out of #5648

Change-Id: I0c56fd151dc5489c3c94fb40d18fd639e06473bc
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2 years ago
Eng Zer Jun f0347e841f refactor: move from io/ioutil to io and os packages
The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.

Reference: https://golang.org/doc/go1.16#ioutil
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
2 years ago
Brad Fitzpatrick 74674b110d envknob: support changing envknobs post-init
Updates #5114

Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 45a3de14a6 cmd/tailscaled, tailcfg, hostinfo: add flag to disable logging + support
As noted in #5617, our documented method of blocking log.tailscale.io
DNS no longer works due to bootstrap DNS.

Instead, provide an explicit flag (--no-logs-no-support) and/or env
variable (TS_NO_LOGS_NO_SUPPORT=true) to explicitly disable logcatcher
uploads. It also sets a bit on Hostinfo to say that the node is in that
mode so we can end any support tickets from such nodes more quickly.

This does not yet provide an easy mechanism for users on some
platforms (such as Windows, macOS, Synology) to set flags/env. On
Linux you'd used /etc/default/tailscaled typically. Making it easier
to set flags for other platforms is tracked in #5114.

Fixes #5617
Fixes tailscale/corp#1475

Change-Id: I72404e1789f9e56ec47f9b7021b44c025f7a373a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick c66f99fcdc tailcfg, control/controlclient, ipn/ipnlocal: add c2n (control-to-node) system
This lets the control plane can make HTTP requests to nodes.

Then we can use this for future things rather than slapping more stuff
into MapResponse, etc.

Change-Id: Ic802078c50d33653ae1f79d1e5257e7ade4408fd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Tom DNetto 18edd79421 control/controlclient,tailcfg: [capver 40] create KeySignature field in tailcfg.Node
We calve out a space to put the node-key signature (used on tailnets where network lock is enabled).

Signed-off-by: Tom DNetto <tom@tailscale.com>
2 years ago
Juan Font Alonso 64d482ff48 Allow any port for HTTPS when using Noise over TLS
Signed-off-by: Juan Font Alonso <juanfontalonso@gmail.com>
2 years ago
Brad Fitzpatrick 90555c5cb2 tailcfg, control/controlclient: add PingRequest.URLIsNoise [capver 38]
Change-Id: I19bb63b6d99e96b2f9fd2c440afcc31d38137ded
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 4ee64681ad tailcfg, control/controlclient: make Debug settings sticky in a map session [capver 37]
Fixes #4843

Change-Id: I3accfd91be474ac745cb47f5d6e866c37d5c5d2d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Maisem Ali a9f6cd41fd all: use syncs.AtomicValue
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2 years ago
Maisem Ali 9bb5a038e5 all: use atomic.Pointer
Also add some missing docs.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2 years ago
Brad Fitzpatrick 9e5954c598 control/controlclient: fix crash in tests elsewhere when GetNLPublicKey is nil
4001d0bf25 caused tests in another repo to fail with a crash, calling
a nil func. This might not be the right fix, but fixes the build.

Change-Id: I67263f883c298f307abdd22bc2a30b3393f062e6
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Tom DNetto 4001d0bf25 assorted: plumb tka initialization & network-lock key into tailscaled
- A network-lock key is generated if it doesn't already exist, and stored in the StateStore. The public component is communicated to control during registration.
 - If TKA state exists on the filesystem, a tailnet key authority is initialized (but nothing is done with it for now).

Signed-off-by: Tom DNetto <tom@tailscale.com>
2 years ago
Brad Fitzpatrick 7c7e23d87a control/controlclient, tailcfg: add 6 more patchable Node fields [capver 36]
Change-Id: Iae997a9a98a5dd841bc41fa91227d5a7dd476a25
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick a12aad6b47 all: convert more code to use net/netip directly
perl -i -npe 's,netaddr.IPPrefixFrom,netip.PrefixFrom,' $(git grep -l -F netaddr.)
    perl -i -npe 's,netaddr.IPPortFrom,netip.AddrPortFrom,' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPrefix,netip.Prefix,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPort,netip.AddrPort,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IP\b,netip.Addr,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPv6Raw\b,netip.AddrFrom16,g' $(git grep -l -F netaddr. )
    goimports -w .

Then delete some stuff from the net/netaddr shim package which is no
longer neeed.

Updates #5162

Change-Id: Ia7a86893fe21c7e3ee1ec823e8aba288d4566cd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 7eaf5e509f net/netaddr: start migrating to net/netip via new netaddr adapter package
Updates #5162

Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick d8cb5aae17 tailcfg, control/controlclient: add tailcfg.PeersChangedPatch [capver 33]
This adds a lighter mechanism for endpoint updates from control.

Change-Id: If169c26becb76d683e9877dc48cfb35f90cc5f24
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick b7f1fe7b0d tailcfg: remove old DNS fields
The control plane server doesn't send these to modern clients so we
don't need them in the tree. The server has its own serialization code
to generate legacy MapResponses when needed.

Change-Id: Idd1e5d96ddf9d4306f2da550d20b77f0c252817a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 87a4c75fd4 control/controlclient, ipn/ipnlocal: remove Client.SetExpirySooner, fix race
Client.SetExpirySooner isn't part of the state machine. Remove it from
the Client interface.

And fix a use of LocalBackend.cc without acquiring the lock that
guards that field.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick ef0d740270 control/controlclient: remove Client.SetStatusFunc
It can't change at runtime. Make it an option.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 70a2797064 control/controlclient, ipn/ipnlocal: remove some Client methods
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick a1e429f7c3 control/controlclient, types/netmap: remove unused LocalPort field
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 526b0b6890 control/controlclient: start simplifying netmap fetch APIs
Step 1 of many, cleaning up the direct/auto client & restarting map
requests that leads to all the unnecessary map requests.

Updates tailscale/corp#5761

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 13d0b8e6a4 control/controlclient, net/dnscache: use typed singleflight fork
Change-Id: I12be4c5a91ae3a812fe88d9b2d15526fdbb5a921
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 4007601f73 cmd/controlclient: wire up PingRequest peerapi pings too
Updates tailscale/corp#754

Change-Id: I61ac3fc44783b54bd02455bcb0baf19159b7a9d2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Jordan Whited 43f9c25fd2
cmd/tailscale: surface authentication errors in status.Health (#4748)
Fixes #3713

Signed-off-by: Jordan Whited <jordan@tailscale.com>
3 years ago
Mihai Parparita a9f32656f5 control/controlhttp: allow client and server to communicate over WebSockets
We can't do Noise-over-HTTP in Wasm/JS (because we don't have bidirectional
communication), but we should be able to do it over WebSockets. Reuses
derp WebSocket support that allows us to turn a WebSocket connection
into a net.Conn.

Updates #3157

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
3 years ago
Brad Fitzpatrick c81be7b899 control/controlclient: avoid Noise protocol for js/wasm for now
Updates #3157

Change-Id: I04accc09783a68257d28cadde5818bf0724a8013
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Maisem Ali c60cbca371 control/controlclient: store netinfo and hostinfo separately
Currently, when SetNetInfo is called it sets the value on
hostinfo.NetInfo. However, when SetHostInfo is called it overwrites the
hostinfo field which may mean it also clears out the NetInfo it had just
received.
This commit stores NetInfo separately and combines it into Hostinfo as
needed so that control is always notified of the latest values.

Also, remove unused copies of Hostinfo from ipn.Status and
controlclient.Auto.

Updates #tailscale/corp#4824 (maybe fixes)

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
James Tucker ae483d3446 wgengine, net/packet, cmd/tailscale: add ICMP echo
Updates tailscale/corp#754

Signed-off-by: James Tucker <james@tailscale.com>
3 years ago
Maisem Ali 5a1ef1bbb9 net/tsdial: add SystemDial as a wrapper on netns.Dial
The connections returned from SystemDial are automatically closed when
there is a major link change.

Also plumb through the dialer to the noise client so that connections
are auto-reset when moving from cellular to WiFi etc.

Updates #3363

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Brad Fitzpatrick adcb7e59d2 control/controlclient: fix log print with always-empty key
In debugging #4541, I noticed this log print was always empty.
The value printed was always zero at this point.

Updates #4541

Change-Id: I0eef60c32717c293c1c853879446be65d9b2cef6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 910ae68e0b util/mak: move tailssh's mapSet into a new package for reuse elsewhere
Change-Id: Idfe95db82275fd2be6ca88f245830731a0d5aecf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 9f1dd716e8 tailcfg, logtail: provide Debug bit to disable logtail
For people running self-hosted control planes who want a global
opt-out knob instead of running their own logcatcher.

Change-Id: I7f996c09f45850ff77b58bfd5a535e197971725a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
James Tucker c591c91653 tailcfg, control/controlclient: TSMP & disco pings
tailcfg.PingResponse formalizes the TSMP & disco response message, and
controlclient is wired to send POST responses containing
tailcfg.PingResponse for TSMP and disco PingRequests.

Updates tailscale/corp#754

Signed-off-by: James Tucker <james@tailscale.com>
3 years ago
David Anderson 02ad987e24 control/controlbase: make the protocol version number selectable.
This is so that we can plumb our client capability version through
the protocol as the Noise version. The capability version increments
more frequently than strictly required (the Noise version only needs
to change when cryptographically-significant changes are made to
the protocol, whereas the capability version also indicates changes
in non-cryptographically-significant parts of the protocol), but this
gives us a safe pre-auth way to determine if the client supports
future protocol features, while still relying on Noise's strong
assurance that the client and server have agreed on the same version.

Currently, the server executes the same protocol regardless of the
version number, and just presents the version to the caller so they
can do capability-based things in the upper RPC protocol. In future,
we may add a ratchet to disallow obsolete protocols, or vary the
Noise handshake behavior based on requested version.

Updates #3488

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Maisem Ali 309ddef852
net/netutil: add CheckIPForwardingLinux (#4301)
Combine the code between `LocalBackend.CheckIPForwarding` and
`controlclient.ipForwardingBroken`.

Fixes #4300

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Brad Fitzpatrick f3b13604b3 control/controlclient, ipn/ipnlocal, tailcfg: add MapResponse.PopBrowserURL
Updates #3802

Change-Id: I89481fc5782a0cc8084354706f8f28d94f197325
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Josh Bleecher Snyder 0868329936 all: use any instead of interface{}
My favorite part of generics.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Josh Bleecher Snyder 8c2cb4b431 go.mod: update to latest certstore
It includes a fix to allow us to use Go 1.18.
We can now remove our Tailscale-only build tags.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Josh Bleecher Snyder 26021b07ec control/controlclient: only build certstore-related code with the Tailscale Go toolchain
The certstore code is impacted by golang/go#51726.
The Tailscale Go toolchain fork contains a temporary workaround,
so it can compile it. Once the upstream toolchain can compile certstore,
presumably in Go 1.18.1, we can revert this change.

Note that depaware runs with the upstream toolchain.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Brad Fitzpatrick efc48b0578 ssh/tailssh, ipnlocal, controlclient: fetch next SSHAction from network
Updates #3802

Change-Id: I08e98805ab86d6bbabb6c365ed4526f54742fd8e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 6b11004a2a control/controlclient: proactively close TLS connection after /key fetch
When using Noise.

Updates #3488

Change-Id: I1049963763075a15b72fd8065dcf44a9cf37975f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Nick O'Neill 1625e87526
control/controlclient, localapi: shorten expiry time via localapi (#4112)
Signed-off-by: Nick O'Neill <nick@tailscale.com>
3 years ago
Maisem Ali e82a74553b control/controlclient: make MapRequests go over noise.
Updates #3488

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali ba2c0c3145 control/controlclient: call direct.Close after map requests are complete
This was causing a flake in another repo.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali 91a8cdc84b control/controlclient: make Auto.Shutdown call Direct.Close
Updates #3488

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali 0f37317664 control/controlclient: make RegisterRequest go over Noise
Updates #3488

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Brad Fitzpatrick c4f6df47e5 control/controlclient: fix Noise HTTP/2 regression from earlier commit
Fix regression from 21069124db caught by tests in another repo.

The HTTP/2 Transport that was being returned had a ConnPool that never
dialed.

Updates #3488

Change-Id: I3184d6393813448ae143d37ece14eb732334c05f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 21069124db control/controlclient: fix the Noise HTTP/2 timeout config
We want to close the connection after a minute of inactivity,
not heartbeat once a minute to keep it alive forever.

Updates #3488

Change-Id: I4b5275e8d1f2528e13de2d54808773c70537db91
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Maisem Ali 0588ca5d8b control/controlclient: make SetDNS attempt to go over Noise first
Updates #3488

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali da1821197a tailcfg: add SetDNSResponse
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali 0f31a0fc76 control/controlclient: add Noise client
Updates #3488

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali 249758df90 control/controlclient: start fetching the server noise key
Updates #3488

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Brad Fitzpatrick d5f8f38ac6 tailcfg: rename map request version to "capability version"
And add a CapabilityVersion type, primarily for documentation.

This makes MapRequest.Version, RegisterRequest.Version, and
SetDNSRequest.Version all use the same version, which will avoid
confusing in the future if Register or SetDNS ever changed their
semantics on Version change. (Currently they're both always 1)

This will requre a control server change to allow a
SetDNSRequest.Version value other than 1 to be deployed first.

Change-Id: I073042a216e0d745f52ee2dbc45cf336b9f84b7c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Josh Bleecher Snyder 823d970d60 control/controlclient: use structured logging for MapResponse.ControlTime
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Josh Bleecher Snyder 8c3c5e80b7 tailcfg: make MapResponse.ControlTime a pointer
Otherwise omitempty doesn't work.

This is wire-compatible with a non-pointer type, so switching
is safe, now and in the future.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Josh Bleecher Snyder 8cf6d0a17b tailcfg: add MapResponse.ControlTime field
And log it when provided in map responses.

The test uses the date on which I joined Tailscale. :)

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Maisem Ali 72d8672ef7 tailcfg: make Node.Hostinfo a HostinfoView
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Brad Fitzpatrick 57115e923e tailcfg: add start of SSH policy to be sent from control plane to nodes
Updates #3802

Change-Id: Iec58f35d445aaa267d0f7e7e2f30c049c1df4c0e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 3a94ece30c control/controlclient: remove dummy endpoint in endpoint stripping mode
The TODO is done. Magicsock doesn't require any endpoints to create an
*endpoint now.  Verified both in code and empirically: I can use the
env knob and access everything.

Change-Id: I4fe7ed5b11c5c5e94b21ef3d77be149daeab998a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 86a902b201 all: adjust some log verbosity
Updates #1548

Change-Id: Ia55f1b5dc7dfea09a08c90324226fb92cd10fa00
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Adrian Dewhurst adda2d2a51 control/controlclient: select newer certificate
If multiple certificates match when selecting a certificate, use the one
issued the most recently (as determined by the NotBefore timestamp).
This also adds some tests for the function that performs that
comparison.

Updates tailscale/coral#6

Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
3 years ago
Brad Fitzpatrick b3d268c5a1 control/controlclient: turn off Go's implicit compression
We don't use it anyway, so be explicit that we're not using it.

Change-Id: Iec953271ef0169a2e227811932f5b65b479624af
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 41fd4eab5c envknob: add new package for all the strconv.ParseBool(os.Getenv(..))
A new package can also later record/report which knobs are checked and
set. It also makes the code cleaner & easier to grep for env knobs.

Change-Id: Id8a123ab7539f1fadbd27e0cbeac79c2e4f09751
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Josh Bleecher Snyder d9c21936c3 control/controlclient: stop logging about goal.url invariant
This isn't the ideal solution, but it's good enough for now.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Josh Bleecher Snyder 758c37b83d net/netns: thread logf into control functions
So that darwin can log there without panicking during tests.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Brad Fitzpatrick 24ea365d48 netcheck, controlclient, magicsock: add more metrics
Updates #3307

Change-Id: Ibb33425764a75bde49230632f1b472f923551126
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 3e1daab704 hostinfo, control/controlclient: tell control when Ubuntu has disabled Tailscale's sources
Fixes #3177
Updates #2500

Change-Id: Iff2a8e27ec7d36a1c210263d6218f20ebed37924
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick d2ef73ed82 control/controlclient: rename a variable to not shadow a package name
Change-Id: I1bcb577cb2c47e936d545ad57f308e57399de323
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick ad63fc0510 control/controlclient: make js/wasm work with Go 1.18+
Updates #3157

Change-Id: I2d67e582842ab3638d720bb5db4701b878ad4473
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 337757a819 ipn/ipnlocal, control/controlclient: don't propagate all map errors to UI
Fixes regression from 81cabf48ec which made
all map errors be sent to the frontend UI.

Fixes #3230

Change-Id: I7f142c801c7d15e268a24ddf901c3e6348b6729c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Anderson 0532eb30db all: replace tailcfg.DiscoKey with key.DiscoPublic.
Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson 7e6a1ef4f1 tailcfg: use key.NodePublic in wire protocol types.
Updates #3206.

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson d6e7cec6a7 types/netmap: use key.NodePublic instead of tailcfg.NodeKey.
Update #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Brad Fitzpatrick ff597e773e tailcfg, control/controlclient: add method to exit client from control plane
Change-Id: Ic28ef283ba63396b68fab86bfb0a8ee8f432474c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Anderson 418adae379 various: use NodePublic.AsNodeKey() instead of tailcfg.NodeKeyFromNodePublic()
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson 4d38194c21 control/controlclient: stop using wgkey.
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Brad Fitzpatrick ada8cd99af control/controlclient: add a LoginEphemeral LoginFlags bit
Change-Id: Ib9029ea0c49aa2ee1b6aac6e464ab1f16aef92e8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Anderson 6e5175373e types/netmap: use new node key type.
Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson 0c546a28ba types/persist: use new node key type.
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Maisem Ali 81cabf48ec control/controlclient,tailcfg: propagate registration errors to the frontend
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
nicksherron f01ff18b6f all: fix spelling mistakes
Signed-off-by: nicksherron <nsherron90@gmail.com>
3 years ago
Brad Fitzpatrick aae622314e tailcfg, health: add way for control plane to add problems to health check
So if the control plane knows that something's broken about the node, it can
include problem(s) in MapResponse and "tailscale status" will show it.
(and GUIs in the future, as it's in ipnstate.Status/JSON)

This also bumps the MapRequest.Version, though it's not strictly
required. Doesn't hurt.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Adrian Dewhurst 4da559d7cc control/controlclient: update machine certificate signature version
This iterates on the original signature format.

Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
3 years ago
Josh Bleecher Snyder 5b02ad16b9 control/controlclient: replace TODO with explanation
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Dave Anderson 980acc38ba
types/key: add a special key with custom serialization for control private keys (#2792)
* Revert "Revert "types/key: add MachinePrivate and MachinePublic.""

This reverts commit 61c3b98a24.

Signed-off-by: David Anderson <danderson@tailscale.com>

* types/key: add ControlPrivate, with custom serialization.

ControlPrivate is just a MachinePrivate that serializes differently
in JSON, to be compatible with how the Tailscale control plane
historically serialized its private key.

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson 61c3b98a24 Revert "types/key: add MachinePrivate and MachinePublic."
Broke the tailscale control plane due to surprise different serialization.

This reverts commit 4fdb88efe1.
3 years ago
David Anderson 4fdb88efe1 types/key: add MachinePrivate and MachinePublic.
Plumb throughout the codebase as a replacement for the mixed use of
tailcfg.MachineKey and wgkey.Private/Public.

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson daf54d1253 control/controlclient: remove TS_DEBUG_USE_DISCO=only.
It was useful early in development when disco clients were the
exception and tailscale logs were noisier than today, but now
non-disco is the exception.

Updates #2752

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
slowy07 ac0353e982 fix: typo spelling grammar
Signed-off-by: slowy07 <slowy.arfy@gmail.com>
3 years ago
Brad Fitzpatrick 47045265b9 hostinfo: add SetDeviceModel setter, move remaining code from controlclient
Updates tailscale/corp#1959

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 6f8c8c771b control/controlclient: tweak a couple error messages
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Simeng He e199e407d2 tailcfg: add IP and Types field to PingRequest
Signed-off-by: Simeng He <simeng@tailscale.com>
3 years ago
Josh Bleecher Snyder 4c8b5fdec4 control/controlclient: do not periodically print full netmap
The netmaps can get really large.
Printing, processing, and uploading them is expensive.
Only print the header on an ongoing basis.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Josh Bleecher Snyder a5da4ed981 all: gofmt with Go 1.17
This adds "//go:build" lines and tidies up existing "// +build" lines.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Brad Fitzpatrick dfa5e38fad control/controlclient: report whether we're in a snap package
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 4a2c3e2a0a control/controlclient: grow goroutine debug buffer as needed
To not allocate 1MB up front on iOS.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 1986d071c3 control/controlclient: don't use regexp in goroutine stack scrubbing
To reduce binary size on iOS.

Updates tailscale/corp#2238

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 171ec9f8f4 control/{controlknobs,controlclient}: simplify knobs API, fix controlclient crash
From integration tests elsewhere:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x70 pc=0x845c9b]

goroutine 226 [running]:
tailscale.com/control/controlclient.(*Direct).sendMapRequest(0xc00053e1e0, 0x16670f0, 0xc000353780, 0xffffffffffffffff, 0xc0003e5f10, 0x0, 0x0)
   /home/runner/go/pkg/mod/tailscale.com@v1.1.1-0.20210715222212-1bb6abc604c1/control/controlclient/direct.go:803 +0x19bb
tailscale.com/control/controlclient.(*Direct).PollNetMap(...)
   /home/runner/go/pkg/mod/tailscale.com@v1.1.1-0.20210715222212-1bb6abc604c1/control/controlclient/direct.go:574
tailscale.com/control/controlclient.(*Auto).mapRoutine(0xc00052a1e0)
   /home/runner/go/pkg/mod/tailscale.com@v1.1.1-0.20210715222212-1bb6abc604c1/control/controlclient/auto.go:464 +0x571
created by tailscale.com/control/controlclient.(*Auto).Start
   /home/runner/go/pkg/mod/tailscale.com@v1.1.1-0.20210715222212-1bb6abc604c1/control/controlclient/auto.go:151 +0x65
exit status 2

Also remove types/opt.Bool API addition which is now unnecessary.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
julianknodt 1bb6abc604 net/portmapper: add upnp port mapping
Add in UPnP portmapping, using goupnp library in order to get the UPnP client and run the
portmapping functions. This rips out anywhere where UPnP used to be in portmapping, and has a
flow separate from PMP and PCP.

RELNOTE=portmapper now supports UPnP mappings

Fixes #682
Updates #2109

Signed-off-by: julianknodt <julianknodt@gmail.com>
3 years ago
Brad Fitzpatrick fd7fddd44f control/controlclient: add debug knob to force node to only IPv6 self addr
Updates #2268

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Crawshaw 54199d9d58 controlclient: log server key and URL
Turns out we never reliably log the control plane URL a client connects
to. Do it here, and include the server public key, which might
inadvertently tell us something interesting some day.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
3 years ago
Brad Fitzpatrick 03311bb0d6 hostinfo: add hostinfo package, move stuff out of controlclient
And make it cheaper, so other parts of the code can check the
environment.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick b461ba9554 control/controlclient: fix typo/braino in error message
Thanks to @normanr for noticing.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 333e9e75d4 tailcfg, control/controlclient: clarify more, enforce PingRequest.URL is unique
Updates #2079

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Denton Gentry 857bc4a752 hostinfo: capitalization of AWS
Missed one comment from https://github.com/tailscale/tailscale/pull/1868
should be isAWSLambda not isAwsLambda

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
3 years ago
Denton Gentry 4b71291cdb hostinfo: detect when running in Azure App Service.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
3 years ago
Denton Gentry 3ab587abe7 hostinfo: detect Heroku Dyno.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
3 years ago
Denton Gentry 3c1a73d370 hostinfo: detect AWS Lambda as a container.
AWS Lambda uses Docker containers but does not
have the string "docker" in its /proc/1/cgroup.
Infer AWS Lambda via the environment variables
it sets.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
3 years ago
Simeng He f0121468f4 control/controlclient: add Pinger interface, Options.Pinger
Plumbs down a pinger to the direct to enable client to client Ping
functionality from control.

Signed-off-by: Simeng He <simeng@tailscale.com>
4 years ago
Brad Fitzpatrick e29cec759a ipn/{ipnlocal,localapi}, control/controlclient: add SetDNS localapi
Updates #1235

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Avery Pennarun 8a7d35594d ipnlocal: don't assume NeedsLogin immediately after StartLogout().
Previously, there was no server round trip required to log out, so when
you asked ipnlocal to Logout(), it could clear the netmap immediately
and switch to NeedsLogin state.

In v1.8, we added a true Logout operation. ipn.Logout() would trigger
an async cc.StartLogout() and *also* immediately switch to NeedsLogin.
Unfortunately, some frontends would see NeedsLogin and immediately
trigger a new StartInteractiveLogin() operation, before the
controlclient auth state machine actually acted on the Logout command,
thus accidentally invalidating the entire logout operation, retaining
the netmap, and violating the user's expectations.

Instead, add a new LogoutFinished signal from controlclient
(paralleling LoginFinished) and, upon starting a logout, don't update
the ipn state machine until it's received.

Updates: #1918 (BUG-2)
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Adrian Dewhurst 6d6cf88d82 control/controlclient: use our fork of certstore
The cyolosecurity fork of certstore did not update its module name and
thus can only be used with a replace directive. This interferes with
installing using `go install` so I created a tailscale fork with an
updated module name.

Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
4 years ago
Josh Bleecher Snyder 25df067dd0 all: adapt to opaque netaddr types
This commit is a mishmash of automated edits using gofmt:

gofmt -r 'netaddr.IPPort{IP: a, Port: b} -> netaddr.IPPortFrom(a, b)' -w .
gofmt -r 'netaddr.IPPrefix{IP: a, Port: b} -> netaddr.IPPrefixFrom(a, b)' -w .

gofmt -r 'a.IP.Is4 -> a.IP().Is4' -w .
gofmt -r 'a.IP.As16 -> a.IP().As16' -w .
gofmt -r 'a.IP.Is6 -> a.IP().Is6' -w .
gofmt -r 'a.IP.As4 -> a.IP().As4' -w .
gofmt -r 'a.IP.String -> a.IP().String' -w .

And regexps:

\w*(.*)\.Port = (.*)  ->  $1 = $1.WithPort($2)
\w*(.*)\.IP = (.*)  ->  $1 = $1.WithIP($2)

And lots of manual fixups.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Avery Pennarun 6307a9285d controlclient: update Persist.LoginName when it changes.
Well, that was anticlimactic.

Fixes tailscale/corp#461.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Avery Pennarun 0181a4d0ac ipnlocal: don't pause the controlclient until we get at least one netmap.
Without this, macOS would fail to display its menu state correctly if you
started it while !WantRunning. It relies on the netmap in order to show
the logged-in username.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Avery Pennarun b4d04a065f controlclient: extract a Client interface and rename Client->Auto.
This will let us create a mock or fake Client implementation for use
with ipn.Backend.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Avery Pennarun cc3119e27e controlclient: extract State and Status stuff into its own file.
No changes other than moving stuff around.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Brad Fitzpatrick 3411bb959a control/controlclient: fix signRegisterRequest log suppression check on Windows
Fixes #1774

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 6f52fa02a3 control/controlclient, tailcfg: add Debug.SleepSeconds (mapver 19)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 09891b9868 ipn/ipnlocal: on fresh lazy-connecting install, start in state NeedsLogin
Fixes #1759

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick e9d24341e0 tailcfg, control/controlclient: accept nil MapResponse.Node (mapver 18)
All MapResponse fields can not be omitted and are tagged "omitempty".

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 3739cf22b0 tailcfg, control/controlclient: allow empty MapResponse.Domain (mapver17)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 5092cffd1f control/controlclient: add start of some MapResponse->NetworkMap tests
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick aef3c0350c control/controlclient: break direct.go into map.go (+tests), add mapSession
So the NetworkMap-from-incremental-MapResponses can be tested easily.

And because direct.go was getting too big.

No change in behavior at this point. Just movement.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick b993d9802a ipn/ipnlocal, etc: require file sharing capability to send/recv files
tailscale/corp#1582

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 670838c45f tailcfg, control/controlclient: (mapver 16) add Node.Online, MapResponse.OnlineChange
And fix PeerSeenChange bug where it was ignored unless there were
other peer changes.

Updates tailscale/corp#1574

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
David Anderson 7055f870f8 control/controlclient: only use a single DNS label as the hostname.
Fixes #971

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 34d2f5a3d9 tailcfg: add Endpoint, EndpointType, MapRequest.EndpointType
Track endpoints internally with a new tailcfg.Endpoint type that
includes a typed netaddr.IPPort (instead of just a string) and
includes a type for how that endpoint was discovered (STUN, local,
etc).

Use []tailcfg.Endpoint instead of []string internally.

At the last second, send it to the control server as the existing
[]string for endpoints, but also include a new parallel
MapRequest.EndpointType []tailcfg.EndpointType, so the control server
can start filtering out less-important endpoint changes from
new-enough clients. Notably, STUN-discovered endpoints can be filtered
out from 1.6+ clients, as they can discover them amongst each other
via CallMeMaybe disco exchanges started over DERP. And STUN endpoints
change a lot, causing a lot of MapResposne updates. But portmapped
endpoints are worth keeping for now, as they they work right away
without requiring the firewall traversal extra RTT dance.

End result will be less control->client bandwidth. (despite negligible
increase in client->control bandwidth)

Updates tailscale/corp#1543

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick ccb322db04 tailcfg, control/controlclient: make nil MapResponse.DNSConfig mean unchanged (mapver15)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Simon Kirillov a64b57e2fb control/controlclient: create tls client config with server hostname instead of serverURL.Host
Signed-off-by: Simon Kirillov <svkirillov3@gmail.com>
4 years ago
Brad Fitzpatrick 3167e55ddf ipn/{ipnlocal,localapi}, cmd/tailscale: add logout command
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 597c19ff4e control/controlclient: refactor some internals
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Adrian Dewhurst 3f456ba2e7 control/controlclient: return correct certificate
When searching for the matching client identity, the returned
certificate chain was accidentally set to that of the last identity
returned by the certificate store instead of the one corresponding to
the selected identity.

Also, add some extra error checking for invalid certificate chains, just
in case.

Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
4 years ago
Denton Gentry 224e60cef2 hostifo: update LXC, add Cloud Run.
Recent LXC support no longer has "lxc" in /proc/1/cgroup:
    # cat /proc/1/cgroup
    12:freezer:/
    11:rdma:/
    10:cpuset:/
    9:pids:/
    8:blkio:/
    7:devices:/
    6:perf_event:/
    5:net_cls,net_prio:/
    4:memory:/
    3:hugetlb:/
    2:cpu,cpuacct:/
    1:name=systemd:/init.scope
    0::/init.scope

Look for fuse.lxcfs in /proc.mounts in addition:
    # grep lxc /proc/mounts
    lxcfs /proc/cpuinfo fuse.lxcfs ...
    lxcfs /proc/diskstats fuse.lxcfs ...
    lxcfs /proc/loadavg fuse.lxcfs ...
    lxcfs /proc/meminfo fuse.lxcfs ...
    lxcfs /proc/stat fuse.lxcfs ...
    lxcfs /proc/swaps fuse.lxcfs ...
    lxcfs /proc/uptime fuse.lxcfs ...
    lxcfs /sys/devices/system/cpu/online fuse.lxcfs ...

Add Knative detection by looking for the environment variables
which are part of its container contract.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
4 years ago
Brad Fitzpatrick 1bd14a072c cmd/tailscale, ipn/localapi: move IP forwarding check to tailscaled, API
Instead of having the CLI check whether IP forwarding is enabled, ask
tailscaled. It has a better idea. If it's netstack, for instance, the
sysctl values don't matter. And it's possible that only the daemon has
permission to know.

Fixes #1626

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick a998fe7c3d control/controlclient: support lazy machine key generation
It's not done in the caller yet, but the controlclient does it now.

Updates #1573

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick ddaacf0a57 control/controlclient: document a few things
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 12ae2d73b3 control/controlclient: fix TS_DEBUG_MAP on requests
The concrete type being encoded changed from a value to pointer
earlier and this was never adjusted.

(People don't frequently use TS_DEBUG_MAP to see requests, so it went
unnoticed until now.)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Adrian Dewhurst 04dd6d1dae
control/controlclient: sign RegisterRequest (#1549)
control/controlclient: sign RegisterRequest

Some customers wish to verify eligibility for devices to join their
tailnets using machine identity certificates. TLS client certs could
potentially fulfill this role but the initial customer for this feature
has technical requirements that prevent their use. Instead, the
certificate is loaded from the Windows local machine certificate store
and uses its RSA public key to sign the RegisterRequest message.

There is room to improve the flexibility of this feature in future and
it is currently only tested on Windows (although Darwin theoretically
works too), but this offers a reasonable starting place for now.

Updates tailscale/coral#6

Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
4 years ago