This is step 2 of ~4, breaking up #14720 into reviewable chunks, with
the aim to make syspolicy be a build-time configurable feature.
Step 1 was #16984.
In this second step, the util/syspolicy/policyclient package is added
with the policyclient.Client interface. This is the interface that's
always present (regardless of build tags), and is what code around the
tree uses to ask syspolicy/MDM questions.
There are two implementations of policyclient.Client for now:
1) NoPolicyClient, which only returns default values.
2) the unexported, temporary 'globalSyspolicy', which is implemented
in terms of the global functions we wish to later eliminate.
This then starts to plumb around the policyclient.Client to most callers.
Future changes will plumb it more. When the last of the global func
callers are gone, then we can unexport the global functions and make a
proper policyclient.Client type and constructor in the syspolicy
package, removing the globalSyspolicy impl out of tsd.
The final change will sprinkle build tags in a few more places and
lock it in with dependency tests to make sure the dependencies don't
later creep back in.
Updates #16998
Updates #12614
Change-Id: Ib2c93d15c15c1f2b981464099177cd492d50391c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is step 1 of ~3, breaking up #14720 into reviewable chunks, with
the aim to make syspolicy be a build-time configurable feature.
In this first (very noisy) step, all the syspolicy string key
constants move to a new constant-only (code-free) package. This will
make future steps more reviewable, without this movement noise.
There are no code or behavior changes here.
The future steps of this series can be seen in #14720: removing global
funcs from syspolicy resolution and using an interface that's plumbed
around instead. Then adding build tags.
Updates #12614
Change-Id: If73bf2c28b9c9b1a408fe868b0b6a25b03eeabd1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
If you had HTTPS_PROXY=https://some-valid-cert.example.com running a
CONNECT proxy, we should've been able to do a TLS CONNECT request to
e.g. controlplane.tailscale.com:443 through that, and I'm pretty sure
it used to work, but refactorings and lack of integration tests made
it regress.
It probably regressed when we added the baked-in LetsEncrypt root cert
validation fallback code, which was testing against the wrong hostname
(the ultimate one, not the one which we were being asked to validate)
Fixes#16222
Change-Id: If014e395f830e2f87f056f588edacad5c15e91bc
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
* control/controlclient,health,tailcfg: refactor control health messages
Updates tailscale/corp#27759
Signed-off-by: James Sanderson <jsanderson@tailscale.com>
Signed-off-by: Paul Scott <408401+icio@users.noreply.github.com>
Co-authored-by: Paul Scott <408401+icio@users.noreply.github.com>
This handle can be used in tests and debugging to identify the specific
client connection.
Updates tailscale/corp#28368
Change-Id: I48cc573fc0bcf018c66a18e67ad6c4f248fb760c
Signed-off-by: Brian Palmer <brianp@tailscale.com>
This adds netx.DialFunc, unifying a type we have a bazillion other
places, giving it now a nice short name that's clickable in
editors, etc.
That highlighted that my earlier move (03b47a55c7) of stuff from
nettest into netx moved too much: it also dragged along the memnet
impl, meaning all users of netx.DialFunc who just wanted netx for the
type definition were instead also pulling in all of memnet.
So move the memnet implementation netx.Network into memnet, a package
we already had.
Then use netx.DialFunc in a bunch of places. I'm sure I missed some.
And plenty remain in other repos, to be updated later.
Updates tailscale/corp#27636
Change-Id: I7296cd4591218e8624e214f8c70dab05fb884e95
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
updates tailscale/corp#26435
Adds client support for sending audit logs to control via /machine/audit-log.
Specifically implements audit logging for user initiated disconnections.
This will require further work to optimize the peristant storage and exclusion
via build tags for mobile:
tailscale/corp#27011tailscale/corp#27012
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
If we get a packet in over some DERP and don't otherwise know how to
reply (no known DERP home or UDP endpoint), this makes us use the
DERP connection on which we received the packet to reply. This will
almost always be our own home DERP region.
This is particularly useful for large one-way nodes (such as
hello.ts.net) that don't actively reach out to other nodes, so don't
need to be told the DERP home of peers. They can instead learn the
DERP home upon getting the first connection.
This can also help nodes from a slow or misbehaving control plane.
Updates tailscale/corp#26438
Change-Id: I6241ec92828bf45982e0eb83ad5c7404df5968bc
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The c2n handling code was using the Go httptest package's
ResponseRecorder code but that's in a test package which brings in
Go's test certs, etc.
This forks the httptest recorder type into its own package that only
has the recorder and adds a test that we don't re-introduce a
dependency on httptest.
Updates #12614
Change-Id: I3546f49972981e21813ece9064cc2be0b74f4b16
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Not just its code.
Updates tailscale/corp#23584
Change-Id: I8001a675372fe15da797adde22f04488d8683448
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I noticed a few places with custom http.Transport where we are not
closing idle connections when transport is no longer used.
Updates tailscale/corp#21609
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
This change moves handling of wrapped auth keys to the `tka` package and
adds a test covering auth key originating signatures (SigCredential) in
netmap.
Updates tailscale/corp#19764
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
Updates tailscale/tailscale#4136
This PR is the first round of work to move from encoding health warnings as strings and use structured data instead. The current health package revolves around the idea of Subsystems. Each subsystem can have (or not have) a Go error associated with it. The overall health of the backend is given by the concatenation of all these errors.
This PR polishes the concept of Warnable introduced by @bradfitz a few weeks ago. Each Warnable is a component of the backend (for instance, things like 'dns' or 'magicsock' are Warnables). Each Warnable has a unique identifying code. A Warnable is an entity we can warn the user about, by setting (or unsetting) a WarningState for it. Warnables have:
- an identifying Code, so that the GUI can track them as their WarningStates come and go
- a Title, which the GUIs can use to tell the user what component of the backend is broken
- a Text, which is a function that is called with a set of Args to generate a more detailed error message to explain the unhappy state
Additionally, this PR also begins to send Warnables and their WarningStates through LocalAPI to the clients, using ipn.Notify messages. An ipn.Notify is only issued when a warning is added or removed from the Tracker.
In a next PR, we'll get rid of subsystems entirely, and we'll start using structured warnings for all errors affecting the backend functionality.
Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
A non-signing node can be allowed to re-sign its new node keys following
key renewal/rotation (e.g. via `tailscale up --force-reauth`). To be
able to do this, node's TLK is written into WrappingPubkey field of the
initial SigDirect signature, signed by a signing node.
The intended use of this field implies that, for each WrappingPubkey, we
typically expect to have at most one active node with a signature
tracing back to that key. Multiple valid signatures referring to the
same WrappingPubkey can occur if a client's state has been cloned, but
it's something we explicitly discourage and don't support:
https://tailscale.com/s/clone
This change propagates rotation details (wrapping public key, a list
of previous node keys that have been rotated out) to netmap processing,
and adds tracking of obsolete node keys that, when found, will get
filtered out.
Updates tailscale/corp#19764
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
Updates #12172 (then need to update other repos)
Change-Id: I439f65e0119b09e00da2ef5c7a4f002f93558578
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The CLI's "up" is kinda chaotic and LocalBackend.Start is kinda
chaotic and they both need to be redone/deleted (respectively), but
this fixes some buggy behavior meanwhile. We were previously calling
StartLoginInteractive (to start the controlclient's RegisterRequest)
redundantly in some cases, causing test flakes depending on timing and
up's weird state machine.
We only need to call StartLoginInteractive in the client if Start itself
doesn't. But Start doesn't tell us that. So cheat a bit and a put the
information about whether there's a current NodeKey in the ipn.Status.
It used to be accessible over LocalAPI via GetPrefs as a private key but
we removed that for security. But a bool is fine.
So then only call StartLoginInteractive if that bool is false and don't
do it in the WatchIPNBus loop.
Fixes#12028
Updates #12042
Change-Id: I0923c3f704a9d6afd825a858eb9a63ca7c1df294
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
... in prep for merging the net/interfaces package into net/netmon.
This is a no-op change that updates a bunch of the API signatures ahead of
a future change to actually move things (and remove the type alias)
Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299
Change-Id: I477613388f09389214db0d77ccf24a65bff2199c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The goal is to move more network state accessors to netmon.Monitor
where they can be cheaper/cached. But first (this change and others)
we need to make sure the one netmon.Monitor is plumbed everywhere.
Some notable bits:
* tsdial.NewDialer is added, taking a now-required netmon
* because a tsdial.Dialer always has a netmon, anything taking both
a Dialer and a NetMon is now redundant; take only the Dialer and
get the NetMon from that if/when needed.
* netmon.NewStatic is added, primarily for tests
Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299
Change-Id: I877f9cb87618c4eb037cee098241d18da9c01691
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This adds a health.Tracker to tsd.System, accessible via
a new tsd.System.HealthTracker method.
In the future, that new method will return a tsd.System-specific
HealthTracker, so multiple tsnet.Servers in the same process are
isolated. For now, though, it just always returns the temporary
health.Global value. That permits incremental plumbing over a number
of changes. When the second to last health.Global reference is gone,
then the tsd.System.HealthTracker implementation can return a private
Tracker.
The primary plumbing this does is adding it to LocalBackend and its
dozen and change health calls. A few misc other callers are also
plumbed. Subsequent changes will flesh out other parts of the tree
(magicsock, controlclient, etc).
Updates #11874
Updates #4136
Change-Id: Id51e73cfc8a39110425b6dc19d18b3975eac75ce
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This moves most of the health package global variables to a new
`health.Tracker` type.
But then rather than plumbing the Tracker in tsd.System everywhere,
this only goes halfway and makes one new global Tracker
(`health.Global`) that all the existing callers now use.
A future change will eliminate that global.
Updates #11874
Updates #4136
Change-Id: I6ee27e0b2e35f68cb38fecdb3b2dc4c3f2e09d68
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It was only obviously unused after the previous change, c39cde79d.
Updates #19334
Change-Id: I9896d5fa692cb4346c070b4a339d0d12340c18f7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We were storing server-side lots of:
"Auth":{"Provider":"","LoginName":"","Oauth2Token":null,"AuthKey":""},
That was about 7% of our total storage of pending RegisterRequest
bodies.
Updates tailscale/corp#19327
Change-Id: Ib73842759a2b303ff5fe4c052a76baea0d68ae7d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The initial control client request can get stuck in the event that a
connection is established but then lost part way through, without any
ICMP or RST. Ensure that the control client will be restarted by timing
out that initial request as well.
Fixes#11542
Signed-off-by: James Tucker <james@tailscale.com>
In the recent 20e9f3369 we made HealthChangeRequest machine requests
include a NodeKey, as it was the oddball machine request that didn't
include one. Unfortunately, that code was sometimes being called (at
least in some of our integration tests) without a node key due to its
registration with health.RegisterWatcher(direct.ReportHealthChange).
Fortunately tests in corp caught this before we cut a release. It's
possible this only affects this particular integration test's
environment, but still worth fixing.
Updates tailscale/corp#1297
Change-Id: I84046779955105763dc1be5121c69fec3c138672
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Use the zstdframe package where sensible instead of plumbing
around our own zstd.Encoder just for stateless operations.
This causes logtail to have a dependency on zstd,
but that's arguably okay since zstd support is implicit
to the protocol between a client and the logging service.
Also, virtually every caller to logger.NewLogger was
manually setting up a zstd.Encoder anyways,
meaning that zstd was functionally always a dependency.
Updates #cleanup
Updates tailscale/corp#18514
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
When auto-update setting in local Prefs is unset, apply the tailnet
default value from control. This only happens once, when we apply the
default (or when the user manually overrides it), tailnet default no
longer affects the node.
Updates #16244
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
In prep for making mapSession's lifetime not be 1:1 with a single HTTP
response's lifetime, this moves the inactivity timer watchdog out of
mapSession and into the caller that owns the streaming HTTP response.
(This is admittedly closer to how it was prior to the mapSession type
existing, but that was before we connected some dots which were
impossible to even see before the mapSession type broke the code up.)
Updates #7175
Change-Id: Ia108dac84a4953db41cbd30e73b1de4a2a676c11
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It was a really a mutable field owned by mapSession that we didn't move
in earlier commits.
Once moved, it's then possible to de-func-ify the code and turn it into
a regular method rather than an installed optional hook.
Noticed while working to move map session lifetimes out of
Direct.sendMapRequest's single-HTTP-connection scope.
Updates #7175
Updates #cleanup
Change-Id: I6446b15793953d88d1cabf94b5943bb3ccac3ad9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Currently only the top four most popular changes: endpoints, DERP
home, online, and LastSeen.
Updates #1909
Change-Id: I03152da176b2b95232b56acabfb55dcdfaa16b79
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is both more efficient (because the knobs' bool is only updated
whenever Node is changed, rarely) and also gets us one step closer to
removing a case of storing a netmap.NetworkMap in
magicsock. (eventually we want to phase out much of the use of that
type internally)
Updates #1909
Change-Id: I37e81789f94133175064fdc09984e4f3a431f1a1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Previously two tsnet nodes in the same process couldn't have disjoint
sets of controlknob settings from control as both would overwrite each
other's global variables.
This plumbs a new controlknobs.Knobs type around everywhere and hangs
the knobs sent by control on that instead.
Updates #9351
Change-Id: I75338646d36813ed971b4ffad6f9a8b41ec91560
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Brad Fitzpatrick
Andrew Lytvynov
James 'zofrex' Sanderson
Brian Palmer
Jonathan Nobels
Anton Tolchanov
Andrea Gottardo
James Tucker
Joe Tsai
Matt Layher
Claire Wang