Commit Graph

268 Commits (3ed366ee1ee72c110310d44a7a3dd8e179c473dc)

Author SHA1 Message Date
Brad Fitzpatrick 58abae1f83 net/dns/{publicdns,resolver}: add NextDNS DoH support
NextDNS is unique in that users create accounts and then get
user-specific DNS IPs & DoH URLs.

For DoH, the customer ID is in the URL path.

For IPv6, the IP address includes the customer ID in the lower bits.

For IPv4, there's a fragile "IP linking" mechanism to associate your
public IPv4 with an assigned NextDNS IPv4 and that tuple maps to your
customer ID.

We don't use the IP linking mechanism.

Instead, NextDNS is DoH-only. Which means using NextDNS necessarily
shunts all DNS traffic through 100.100.100.100 (programming the OS to
use 100.100.100.100 as the global resolver) because operating systems
can't usually do DoH themselves.

Once it's in Tailscale's DoH client, we then connect out to the known
NextDNS IPv4/IPv6 anycast addresses.

If the control plane sends the client a NextDNS IPv6 address, we then
map it to the corresponding NextDNS DoH with the same client ID, and
we dial that DoH server using the combination of v4/v6 anycast IPs.

Updates #2452

Change-Id: I3439d798d21d5fc9df5a2701839910f5bef85463
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick ad7546fb9f tailcfg: fix broken test from comment change
Fix broken build from 255c0472fb

"Oh, that's safe to commit because most tests are passing and it's
just a comment change!", I thought, forgetting I'd added a test that
parses its comments.

Change-Id: Iae93d595e06fec48831215a98adbb270f3bfda05
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 255c0472fb tailcfg: reformat CurrentCapabilityVersion to be a bulleted list
gofmt in 1.19 is now opinionated about structured text formatting in
comments. It did not like our style and kept fighting us whenever we
changed these lines. Give up the fight and be a bulleted list for it.

See:

* https://go.dev/doc/go1.19#go-doc and
* https://go.dev/doc/comment

Updates #4872

Change-Id: Ifae431218471217168c003ab3b4e03c394ca8105
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Tom DNetto 9132b31e43 tailcfg: refactor/implement wire structs for TKA
Signed-off-by: Tom DNetto <tom@tailscale.com>
2 years ago
Brad Fitzpatrick 761163815c tailcfg: add Hostinfo.Userspace{,Router} bits
Change-Id: Iad47f904872f2df146c1f63945f79cfddeac7fe8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 9f6c8517e0 net/dns: set OS DNS to 100.100.100.100 for route-less ExtraRecords [cap 41]
If ExtraRecords (Hosts) are specified without a corresponding split
DNS route and global DNS is specified, then program the host OS DNS to
use 100.100.100.100 so it can blend in those ExtraRecords.

Updates #1543

Change-Id: If49014a5ecc8e38978ff26e54d1f74fe8dbbb9bc
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
Brad Fitzpatrick f1c9812188 tailcfg: add Hostinfo.GoVersion
So next time something like #5340 happens we can identify all affected
nodes and have the control plane send them health warnings.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Tom DNetto f81723ceac tailcfg: implement wire format for map request/response tka comms
Signed-off-by: Tom DNetto <tom@tailscale.com>
2 years ago
Tom DNetto 472529af38 tka: optimize common case of processing updates built from head
Signed-off-by: Tom DNetto <tom@tailscale.com>
2 years ago
Tom DNetto 039def3b50 ipn,tailcfg: transmit NodeID in tka init RPCs
Needed to identify the node. A serverside-check the machine key (used
to authenticate the noise session) is that of the specified NodeID
ensures the authenticity of the request.

Signed-off-by: Tom DNetto <tom@tailscale.com>
2 years ago
Tom DNetto facafd8819 client,cmd/tailscale,ipn,tka,types: implement tka initialization flow
This PR implements the client-side of initializing network-lock with the
Coordination server.

Signed-off-by: Tom DNetto <tom@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
Aaron Klotz b997304bf6 tailcfg: add CapabilityDataPlaneAuditLogs.
We're going to want to enable audit logging on a per-Tailnet basis. When this
happens, we want control to inform the Tailnet's clients of this capability.

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
2 years ago
Juan Font ffc67806ef
tailcfg: bump capver for clients to talk Noise over any HTTPS port [capver 39]
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 b33c337baa tailcfg: actually bump capver to 37, add test
I documented capver 37 in 4ee64681a but forgot to bump the actual
constant. I've done this previously too, so add a test to prevent
it from happening again.

Change-Id: I6f7659db1243d30672121a384beb386d9f9f5b98
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
Andrew Dunham f0d6f173c9
net/netcheck: try ICMP if UDP is blocked (#5056)
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
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
Maisem Ali eb32847d85 tailcfg: add CapabilityFileSharingTarget to identify FileTargets
This adds the inverse to CapabilityFileSharingSend so that senders can
identify who they can Taildrop to.

Updates #2101

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2 years ago
Brad Fitzpatrick 116f55ff66 all: gofmt for Go 1.19
Updates #5210

Change-Id: Ib02cd5e43d0a8db60c1f09755a8ac7b140b670be
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Maisem Ali fa2fbaf3aa tailcfg: add views for SSHRule and SSHPrincipal
Signed-off-by: Maisem Ali <maisem@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 6a396731eb all: use various net/netip parse funcs directly
Mechanical change with perl+goimports.

Changed {Must,}Parse{IP,IPPrefix,IPPort} to their netip variants, then
goimports -d .

Finally, removed the net/netaddr wrappers, to prevent future use.

Updates #5162

Change-Id: I59c0e38b5fbca5a935d701645789cddf3d7863ad
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 2491fe1afe tailcfg: add missing omitempty annotation to PopBrowserURL
Change-Id: I8e752afd5bf009c17aae1b53650479b37c3232bd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
David Anderson c1cb3efbba net/netcheck: test for OS IPv6 support as well as connectivity.
This lets us distinguish "no IPv6 because the device's ISP doesn't
offer IPv6" from "IPv6 is unavailable/disabled in the OS".

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
Brad Fitzpatrick 6b71568eb7 util/cloudenv: add Azure support & DNS IPs
And rewrite cloud detection to try to do only zero or one metadata
discovery request for all clouds, only doing a first (or second) as
confidence increases. Work remains for Windows, but a start.

And add Cloud to tailcfg.Hostinfo, which helped with testing using
"tailcfg debug hostinfo".

Updates #4983 (Linux only)
Updates #4984

Change-Id: Ib03337089122ce0cb38c34f724ba4b4812bc614e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 99ed54926b tailcfg: define some Node.Capabilities about SSH, its config
Updates #3802

Change-Id: Icb4ccbc6bd1c6304013bfc553d04007844a5c0bf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 4005134263 tailcfg: clarify some of the MapRequest variants
Change-Id: Ia09bd69856e372c3a6b64cda7ddb34029b32a11b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Mihai Parparita b788a5ba7e tailcfg: add HostinfoView version of TailscaleSSHEnabled
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
3 years ago
Ross Zurowski bb67999808
tailcfg: add TailscaleSSHEnabled helper check (#4812)
This commit adds a helper to check if Tailscale SSH is enabled. We're
currently checking the SSH_HostKeys field in a few places, but later
plan to add an explicit bool. This helper makes the check and any future
changes easier.

Signed-off-by: Ross Zurowski <ross@rosszurowski.com>
3 years ago
Brad Fitzpatrick 4d85cf586b cmd/tailscale, ipn/ipnlocal: add "peerapi" ping type
For debugging when stuff like #4750 isn't working.

RELNOTE=tailscale ping -peerapi

Change-Id: I9c52c90fb046e3ab7d2b121387073319fbf27b99
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Maisem Ali d04afc697c cmd/viewer,types/views: add support for views of maps
Updates #4635

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali 9f3ad40707 tailcfg: use cmd/viewer instead of cmd/cloner.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali fd99c54e10 tailcfg,all: change structs to []*dnstype.Resolver
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali 679415f3a8 tailcfg: move views into tailcfg_view.go
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali e409e59a54 cmd/cloner,util/codegen: refactor cloner internals to allow reuse
Also run go generate again for Copyright updates.

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
Brad Fitzpatrick 512573598a tailcfg: remove some documented DebugFlags that no longer exist
Update tailscale/corp#5007

Change-Id: I3ce5b1c4cd367bae769a5f5a301925a2dac1b3a6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 373176ea54 util/codegen: format generated code with goimports, not gofmt
goimports is a superset of gofmt that also groups imports.
(the goimports tool also adds/removes imports as needed, but that
part is disabled here)

Change-Id: Iacf0408dfd9497f4ed3da4fa50e165359ce38498
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick c88506caa6 ipn/ipnlocal: add Wake-on-LAN function to peerapi
No CLI support yet. Just the curl'able version if you know the peerapi
port. (like via a TSMP ping)

Updates #306

Change-Id: I0662ba6530f7ab58d0ddb24e3664167fcd1c4bcf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 89832c1a95 tailcfg: fix typo in SessionDuration field name
Noted by @danderson.

Updates #3802

Change-Id: Ide15f3f28e30f6abb5c94d7dcd218bd9482752a0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick f7cb6630e7 tailcfg: document SSHPrincipal.PubKeys URL expansions
From f74ee80abe which lacked docs.

Updates #3802

Change-Id: Ia7df05a486ae383cc6d9aca9dfe487b04e243ad5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick c13be0c509 tailcfg: clarify how SSHPolicy.Rules are evaluated between auth phases
Updates #3802

Change-Id: I321183a8a2b065a40dca8dd95ca90cd822a17ff8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Tom DNetto 24cd26534f hostinfo, tailcfg: add desktop detection on Linux to hostinfo
From the machines tab its hard to differenciate desktop Linux installs from
server Linux installs. Transmitting this information should make this
determination a lot easier.

Due to the reality that tailscaled is likely a system process, the standard
checks based on XDG_SESSION_TYPE or DISPLAY environment variables are not
possible (those variables won't be set). Instead, we look for listening
unix sockets that are typical of desktop installs.

Signed-off-by: Tom DNetto <tom@tailscale.com>
3 years ago