Commit Graph

2216 Commits (f1d45bc4bb20fb4b8e602ec800c96e0becd51674)
 

Author SHA1 Message Date
David Anderson 720c1ad0f0 net/dns: insert OS base config when emulating split DNS.
Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson e560be6443 net/dns: sort matchDomains to avoid test flake.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 68f76e9aa1 net/dns: add GetBaseConfig to OSConfigurator interface.
Part of #953, required to make split DNS work on more basic
platforms.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson fe9cd61d71 net/dns: add tests for DNS config generation.
Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 0ba6d03768 net/dns/resolver: add a test helper to get at the resolver config.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson da4cc8bbb4 net/dns: handle all possible translations of high-level DNS config.
With this change, all OSes can sort-of do split DNS, except that the
default upstream is hardcoded to 8.8.8.8 pending further plumbing.
Additionally, Windows 8-10 can do split DNS fully correctly, without
the 8.8.8.8 hack.

Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 939861773d net/tstun: accept peerapi connections through the filter
Fixes tailscale/corp#1545

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 950fc28887 ipn, paths, cmd/tailscaled: remove LegacyConfigPath, relaynode migration
It is time.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick d581ee2536 ipn: remove Options.HTTPTestClient, move to LocalBackend
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 50b309c1eb ipn/localapi, cmd/tailscale: add API to get prefs, CLI debug command to show
Updates #1436

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 03be116997 client/tailscale: factor out some helpers to reduce boilerplate
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick d4b609e138 cmd/tailscale/cli: fix bug in earlier tailscale debug --local-creds addition
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
Brad Fitzpatrick 799973a68d ipn: move Options.Notify to its own method
We already had SetNotifyCallback elsewhere on controlclient, so use
that name.

Baby steps towards some CLI refactor work.

Updates tailscale/tailscale#1436
4 years ago
Brad Fitzpatrick d488678fdc cmd/tailscaled, wgengine{,/netstack}: add netstack hybrid mode, add to Windows
For #707

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 1f99f889e1 ipn/{ipnlocal,localapi}: add localapi handler to dial/proxy file PUTs
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Denton Gentry 3089081349 monitor/polling: reduce Cloud Run polling interval.
Cloud Run's routes never change at runtime. Don't poll it for
route changes very often.

Signed-off-by: Denton Gentry <dgentry@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
Maisem Ali 57756ef673 net/nettest: make nettest.NewConn pass x/net/nettest.TestConn.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
4 years ago
David Anderson e0e677a8f6 net/dns: split out search domains and match domains in OSConfig.
It seems that all the setups that support split DNS understand
this distinction, and it's an important one when translating
high-level configuration.

Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson a8dcda9c9a net/dns: start of compat hacks for Windows 7.
Correctly reports that Win7 cannot do split DNS, and has a helper to
discover the "base" resolvers for the system.

Part of #953

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick ea9e68280d cmd/tailscale/cli: add debug command to print localapi curl command 4 years ago
Brad Fitzpatrick d717499ac4 ipn/localapi: add API for getting file targets
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
David Anderson 3e915ac783 net/dns: implement OS-level split DNS for Windows.
Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson c16a926bf2 net/dns: set OSConfig.Primary.
OS implementations are going to support split DNS soon.
Until they're all in place, hardcode Primary=true to get
the old behavior.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson bc4381447f net/tstun: return the real interface name at device creation.
This is usually the same as the requested interface, but on some
unixes can vary based on device number allocation, and on Windows
it's the GUID instead of the pretty name, since everything relating
to configuration wants the GUID.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Crawshaw d2f838c058 ipn/localapi: 404 on bad endpoints
Confused us for a while!

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
4 years ago
David Anderson de6dc4c510 net/dns: add a Primary field to OSConfig.
Currently ignored.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson b2a597b288 net/dns: rename Set to SetDNS in OSConfigurator.
wgengine/router.CallbackRouter needs to support both the Router
and OSConfigurator interfaces, so the setters can't both be called
Set.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 7d84ee6c98 net/dns: unify the OS manager and internal resolver.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 1bf91c8123 net/dns/resolver: remove unused err return value.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 6a206fd0fb net/dns: rename impl to os.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson c4530971db net/dns/resolver: remove leftover debug print.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson f007a9dd6b health: add DNS subsystem and plumb errors in.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 4c61ebacf4 wgengine: move DNS configuration out of wgengine/router.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Josh Bleecher Snyder 7183e1f052 go.mod: update wireguard-go again
To pick up https://go-review.googlesource.com/c/sys/+/307129.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Josh Bleecher Snyder ba72126b72 wgengine/magicsock: remove RebindingUDPConn.FakeClosed
It existed to work around the frequent opening and closing
of the conn.Bind done by wireguard-go.
The preceding commit removed that behavior,
so we can simply close the connections
when we are done with them.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Josh Bleecher Snyder 69cdc30c6d wgengine/wgcfg: remove Config.ListenPort
We don't use the port that wireguard-go passes to us (via magicsock.connBind.Open).
We ignore it entirely and use the port we selected.

When we tell wireguard-go that we're changing the listen_port,
it calls connBind.Close and then connBind.Open.
And in the meantime, it stops calling the receive functions,
which means that we stop receiving and processing UDP and DERP packets.
And that is Very Bad.

That was never a problem prior to b3ceca1dd7,
because we passed the SkipBindUpdate flag to our wireguard-go fork,
which told wireguard-go not to re-bind on listen_port changes.
That commit eliminated the SkipBindUpdate flag.

We could write a bunch of code to work around the gap.
We could add background readers that process UDP and DERP packets when wireguard-go isn't.
But it's simpler to never create the conditions in which wireguard-go rebinds.

The other scenario in which wireguard-go re-binds is device.Down.
Conveniently, we never call device.Down. We go from device.Up to device.Close,
and the latter only when we're shutting down a magicsock.Conn completely.

Rubber-ducked-by: Avery Pennarun <apenwarr@tailscale.com>
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
David Anderson 748670f1e9 net/dns: fix typo in docstring.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 27a1a2976a wgengine/router: add a CallbackRouter shim.
The shim implements both network and DNS configurators,
and feeds both into a single callback that receives
both configs.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson f89dc1c903 ipn/ipnlocal: don't install any magicdns names if not proxying.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Josh Bleecher Snyder 63c00764e1 go.mod: update to latest wireguard-go and x/sys
To fix windows checkptr failures.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Josh Bleecher Snyder b3ceca1dd7 wgengine/...: split into multiple receive functions
Upstream wireguard-go has changed its receive model.
NewDevice now accepts a conn.Bind interface.

The conn.Bind is stateless; magicsock.Conns are stateful.
To work around this, we add a connBind type that supports
cheap teardown and bring-up, backed by a Conn.

The new conn.Bind allows us to specify a set of receive functions,
rather than having to shoehorn everything into ReceiveIPv4 and ReceiveIPv6.
This lets us plumbing DERP messages directly into wireguard-go,
instead of having to mux them via ReceiveIPv4.

One consequence of the new conn.Bind layer is that
closing the wireguard-go device is now indistinguishable
from the routine bring-up and tear-down normally experienced
by a conn.Bind. We thus have to explicitly close the magicsock.Conn
when the close the wireguard-go device.

One downside of this change is that we are reliant on wireguard-go
to call receiveDERP to process DERP messages. This is fine for now,
but is perhaps something we should fix in the future.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Brad Fitzpatrick 2074dfa5e0 types/preftype: don't use iota for consts persisted to disk
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 9b57cd53ba ipn/ipnlocal: lazily connect to control, lazily generate machine key
Fixes #1573

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick d50406f185 ipn/ipnlocal: simplify loadStateLocked control flow a bit, restore logging
The common Linux start-up path (fallback file defined but not
existing) was missing the log print of initializing Prefs. The code
was too twisty. Simplify a bit.

Updates #1573

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
David Anderson a39d2403bc net/dns: disable NetworkManager and resolved configurators temporarily.
They need some rework to do the right thing, in the meantime the direct
and resolvconf managers will work out.

The resolved implementation was never selected due to control-side settings.
The networkmanager implementation mostly doesn't get selected due to
unforeseen interactions with `resolvconf` on many platforms.
Both implementations also need rework to support the various routing modes
they're capable of.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson befd8e4e68 net/dns: replace managerImpl with OSConfigurator in code.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 077d4dc8c7 net/dns: add an OSConfigurator interface.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 6ad44f9fdf wgengine: take in dns.Config, split out to resolver.Config and dns.OSConfig.
Stepping stone towards having the DNS package handle the config splitting.

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