The key.NewEmptyHardwareAttestationKey hook returns a non-nil empty
attestationKey, which means that the nil check in Clone doesn't trigger
and proceeds to try and clone an empty key. Check IsZero instead to
reduce log spam from Clone.
As a drive-by, make tpmAvailable check a sync.Once because the result
won't change.
Updates #17882
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
This commit replaces usage of local.Client in net/udprelay with DERPMap
plumbing over the eventbus. This has been a longstanding TODO. This work
was also accelerated by a memory leak in net/http when using
local.Client over long periods of time. So, this commit also addresses
said leak.
Updates #17801
Signed-off-by: Jordan Whited <jordan@tailscale.com>
When systemd notification support was omitted from the build, or on
non-Linux systems, we were unnecessarily emitting code and generating
garbage stringifying addresses upon transition to the Running state.
Updates #12614
Change-Id: If713f47351c7922bb70e9da85bf92725b25954b9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
In particular on Windows, the `transport.TPMCloser` we get is not safe
for concurrent use. This is especially noticeable because
`tpm.attestationKey.Clone` uses the same open handle as the original
key. So wrap the operations on ak.tpm with a mutex and make a deep copy
with a new connection in Clone.
Updates #15830
Updates #17662
Updates #17644
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
On some platforms e.g. ChromeOS the owner hierarchy might not always be
available to us. To avoid stale sealing exceptions later we probe to
confirm it's working rather than rely solely on family indicator status.
Updates #17622
Signed-off-by: Patrick O'Doherty <patrick@tailscale.com>
Check that the TPM we have opened is advertised as a 2.0 family device
before using it for state sealing / hardware attestation.
Updates #17622
Signed-off-by: Patrick O'Doherty <patrick@tailscale.com>
Add new arguments to `tailscale up` so authkeys can be generated dynamically via identity federation.
Updates #9192
Signed-off-by: mcoulombe <max@tailscale.com>
Merge the connstats package into the netlog package
and unexport all of its declarations.
Remove the buildfeatures.HasConnStats and use HasNetLog instead.
Updates tailscale/corp#33352
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
I was debugging a customer issue and saw in their 1.88.3 logs:
TPM: error opening: stat /dev/tpm0: no such file or directory
That's unnecessary output. The lack of TPM will be reported by
them having a nil Hostinfo.TPM, which is plenty elsewhere in logs.
Let's only write out an "error opening" line if it's an interesting
error. (perhaps permissions, or EIO, etc)
Updates #cleanup
Change-Id: I3f987f6bf1d3ada03473ca3eef555e9cfafc7677
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Extend Persist with AttestationKey to record a hardware-backed
attestation key for the node's identity.
Add a flag to tailscaled to allow users to control the use of
hardware-backed keys to bind node identity to individual machines.
Updates tailscale/corp#31269
Change-Id: Idcf40d730a448d85f07f1bebf387f086d4c58be3
Signed-off-by: Patrick O'Doherty <patrick@tailscale.com>
The lazy init led to confusion and a belief that was something was
wrong. It's reasonable to expect the daemon to listen on the port at the
time it's configured.
Updates tailscale/corp#33094
Signed-off-by: Jordan Whited <jordan@tailscale.com>
Part of making all netlink monitoring code optional.
Updates #17311 (how I got started down this path)
Updates #12614
Change-Id: Ic80d8a7a44dc261c4b8678b3c2241c3b3778370d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves ~53 KB from the min build.
Updates #12614
Change-Id: I73f9544a9feea06027c6ebdd222d712ada851299
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves ~102 KB from the min build.
Updates #12614
Change-Id: Ie1d4f439321267b9f98046593cb289ee3c4d6249
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Due to iOS memory limitations in 2020 (see
https://tailscale.com/blog/go-linker, etc) and wireguard-go using
multiple goroutines per peer, commit 16a9cfe2f4 introduced some
convoluted pathsways through Tailscale to look at packets before
they're delivered to wireguard-go and lazily reconfigure wireguard on
the fly before delivering a packet, only telling wireguard about peers
that are active.
We eventually want to remove that code and integrate wireguard-go's
configuration with Tailscale's existing netmap tracking.
To make it easier to find that code later, this makes it modular. It
saves 12 KB (of disk) to turn it off (at the expense of lots of RAM),
but that's not really the point. The point is rather making it obvious
(via the new constants) where this code even is.
Updates #12614
Change-Id: I113b040f3e35f7d861c457eaa710d35f47cee1cb
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves only 12 KB, but notably removes some deps on packages that future
changes can then eliminate entirely.
Updates #12614
Change-Id: Ibf830d3ee08f621d0a2011b1d4cd175427ef50df
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
c2n was already a conditional feature, but it didn't have a
feature/c2n directory before (rather, it was using consts + DCE). This
adds it, and moves some code, which removes the httprec dependency.
Also, remove some unnecessary code from our httprec fork.
Updates #12614
Change-Id: I2fbe538e09794c517038e35a694a363312c426a2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 86 KB.
And stop depending on expvar and usermetrics when disabled,
in prep to removing all the expvar/metrics/tsweb stuff.
Updates #12614
Change-Id: I35d2479ddd1d39b615bab32b1fa940ae8cbf9b11
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 262 KB so far. I'm sure I missed some places, but shotizam says
these were the low hanging fruit.
Updates #12614
Change-Id: Ia31c01b454f627e6d0470229aae4e19d615e45e3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Instead of using separate channels to manage the lifecycle of the eventbus
client, use the recently-added eventbus.Monitor, which handles signaling the
processing loop to stop and waiting for it to complete. This allows us to
simplify some of the setup and cleanup code in the relay server.
Updates #15160
Change-Id: Ia1a47ce2e5a31bc8f546dca4c56c3141a40d67af
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
Whenever running on a platform that has a TPM (and tailscaled can access
it), default to encrypting the state. The user can still explicitly set
this flag to disable encryption.
Updates https://github.com/tailscale/corp/issues/32909
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
This permits other programs (in other repos) to conditionally
import ipn/store/awsstore and/or ipn/store/kubestore and have them
register themselves, rather than feature/condregister doing it.
Updates tailscale/corp#32922
Change-Id: I2936229ce37fd2acf9be5bf5254d4a262d090ec1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We will need this for unmarshaling node prefs: use the zero
HardwareAttestationKey implementation when parsing and later check
`IsZero` to see if anything was loaded.
Updates #15830
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Saves 139 KB.
Also Synology support, which I saw had its own large-ish proxy parsing
support on Linux, but support for proxies without Synology proxy
support is reasonable, so I pulled that out as its own thing.
Updates #12614
Change-Id: I22de285a3def7be77fdcf23e2bec7c83c9655593
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 328 KB (2.5%) off the minimal binary.
For IoT devices that don't need MagicDNS (e.g. they don't make
outbound connections), this provides a knob to disable all the DNS
functionality.
Rather than a massive refactor today, this uses constant false values
as a deadcode sledgehammer, guided by shotizam to find the largest DNS
functions which survived deadcode.
A future refactor could make it so that the net/dns/resolver and
publicdns packages don't even show up in the import graph (along with
their imports) but really it's already pretty good looking with just
these consts, so it's not at the top of my list to refactor it more
soon.
Also do the same in a few places with the ACME (cert) functionality,
as I saw those while searching for DNS stuff.
Updates #12614
Change-Id: I8e459f595c2fde68ca16503ff61c8ab339871f97
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
When I added dependency support to featuretag, I broke the handling of
the non-omit build tags (as used by the "box" support for bundling the
CLI into tailscaled). That then affected depaware. The
depaware-minbox.txt this whole time recently has not included the CLI.
So fix that, and also add a new depaware variant that's only the
daemon, without the CLI.
Updates #12614
Updates #17139
Change-Id: I4a4591942aa8c66ad8e3242052e3d9baa42902ca
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Otherwise they're uselessly imported by tsnet applications, even
though they do nothing. tsnet applications wanting to use these
already had to explicitly import them and use kubestore.New or
awsstore.New and assign those to their tsnet.Server.Store fields.
Updates #12614
Change-Id: I358e3923686ddf43a85e6923c3828ba2198991d4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
So wgengine/router is just the docs + entrypoint + types, and then
underscore importing wgengine/router/osrouter registers the constructors
with the wgengine/router package.
Then tsnet can not pull those in.
Updates #17313
Change-Id: If313226f6987d709ea9193c8f16a909326ceefe7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Removes 434 KB from the minimal Linux binary, or ~3%.
Primarily this comes from not linking in the zstd encoding code.
Fixes#17323
Change-Id: I0a90de307dfa1ad7422db7aa8b1b46c782bfaaf7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It has nothing to do with logtail and is confusing named like that.
Updates #cleanup
Updates #17323
Change-Id: Idd34587ba186a2416725f72ffc4c5778b0b9db4a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Brad Fitzpatrick
Jordan Whited
Andrew Lytvynov
Max Coulombe
Patrick O'Doherty
Joe Tsai
M. J. Fromberger