tailscale

Commit Graph

Author	SHA1	Message	Date
Joe Tsai	32a1a3d1c0	util/deephash: avoid variadic argument for Update (#5372 ) Hashing []any is slow since hashing of interfaces is slow. Hashing of interfaces is slow since we pessimistically assume that cycles can occur through them and start cycle tracking. Drop the variadic signature of Update and fix callers to pass in an anonymous struct so that we are hashing concrete types near the root of the value tree. Signed-off-by: Joe Tsai <joetsai@digital-static.net> Signed-off-by: Joe Tsai <joetsai@digital-static.net>	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	486cc9393c	ipn/ipnlocal: fix log about local IPs when using exit nodes Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	a9f6cd41fd	all: use syncs.AtomicValue Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	4950fe60bd	syncs, all: move to using Go's new atomic types instead of ours Fixes #5185 Change-Id: I850dd532559af78c3895e2924f8237ccc328449d Signed-off-by: Brad Fitzpatrick <bradfitz@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
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	5f6abcfa6f	all: migrate code from netaddr.FromStdAddr to Go 1.18 With caveat https://github.com/golang/go/issues/53607#issuecomment-1203466984 that then requires a new wrapper. But a simpler one at least. Updates #5162 Change-Id: I0a5265065bfcd7f21e8dd65b2bd74cae90d76090 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
Brad Fitzpatrick	eae003e56f	ipn/ipnlocal: blend existing host SSH keys + newly-generated types as needed If the host only has RSA, use its RSA + generate ecdsa + ed25519, etc. Perhaps fixes https://twitter.com/colek42c/status/1550554439299244032 and something else that was reported. Change-Id: I88dc475c8e3d95b6f25288ff7664b8e72655fd16 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	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
Denton Gentry	f85bb60eba	ipn/ipnlocal: prevent attempting to run SSH on QNAP for now tailscaled runs as a non-root user, SSH is not immediately working. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	2 years ago
Denton Gentry	d17849461c	ipn/{ipnserver,ipnlocal}: support incoming Taildrop on QNAP Signed-off-by: Denton Gentry <dgentry@tailscale.com>	2 years ago
Brad Fitzpatrick	ba91f57ddd	ipn/ipnlocal: ignore empty SSH host key files Change-Id: I332b0d7d01386111d0af4adf98c96c04d3d12fbb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	227c6b2a53	ipn/ipnlocal: flesh out error on ssh host key parse error Change-Id: Iedd2d3898befa536181036b9e9dea59bc777a440 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	4d0461f721	ipn/ipnlocal: logout ephemeral nodes on shutdown Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Mihai Parparita	ec649e707f	ipn/ipnlocal: prefer to use one CGNAT route on the Mac Together with `06aa141632` this minimizes the number of NEPacketTunnelNetworkSettings updates that we have to do, and thus avoids Chrome interrupting outstanding requests due to (perceived) network changes. Updates #3102 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Brad Fitzpatrick	aa37aece9c	ipn/ipnlocal, net/dns, util/cloudenv: add AWS DNS support And remove the GCP special-casing from ipn/ipnlocal; do it only in the forwarder for .internal. Fixes #4980 Fixes #4981 Change-Id: I5c481e96d91f3d51d274a80fbd37c38f16dfa5cb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	88c2afd1e3	ipn/ipnlocal, net/dns, util/cloudenv: specialize DNS config on Google Cloud This does three things: If you're on GCP, it adds a .internal DNS split route to the metadata server, so we never break GCP DNS names. This lets people have some Tailscale nodes on GCP and some not (e.g. laptops at home) without having to add a Tailnet-wide .internal DNS route. If you already have such a route, though, it won't overwrite it. * If the 100.100.100.100 DNS forwarder has nowhere to forward to, it forwards it to the GCP metadata IP, which forwards to 8.8.8.8. This means there are never errNoUpstreams ("upstream nameservers not set") errors on GCP due to e.g. mangled /etc/resolv.conf (GCP default VMs don't have systemd-resolved, so it's likely a DNS supremacy fight) * makes the DNS fallback mechanism use the GCP metadata IP as a fallback before our hosted HTTP-based fallbacks I created a default GCP VM from their web wizard. It has no systemd-resolved. I then made its /etc/resolv.conf be empty and deleted its GCP hostnames in /etc/hosts. I then logged in to a tailnet with no global DNS settings. With this, tailscaled writes /etc/resolv.conf (direct mode, as no systemd-resolved) and sets it to 100.100.100.100, which then has regular DNS via the metadata IP and .internal DNS via the metadata IP as well. If the tailnet configures explicit DNS servers, those are used instead, except for .internal. This also adds a new util/cloudenv package based on version/distro where the cloud type is only detected once. We'll likely expand it in the future for other clouds, doing variants of this change for other popular cloud environments. Fixes #4911 RELNOTES=Google Cloud DNS improvements Change-Id: I19f3c2075983669b2b2c0f29a548da8de373c7cf 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	467eb2eca0	cmd/tailscale/cli, ipn/ipnlocal: give SSH tips when off/unconfigured Updates #3802 Change-Id: I6b9a3175f68a6daa670f912561f2c2ececc07770 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Praneet Loke	d8c05fc1b2	Update a Taildrop error message (#4818 ) ipn/ipnlocal: update error message on Taildrop send while not connected Signed-off-by: Praneet <1466314+praneetloke@users.noreply.github.com>	2 years ago
Melanie Warrick	3a182d5dd6	ipn/ipnstate: add ExitNodeStatus to share the exit node if it is in use, the IP, ID and whether its online. (#4761 ) - Updates #4619 Signed-off-by: nyghtowl <warrick@tailscale.com>	2 years ago
Mihai Parparita	27a1ad6a70	wasm: exclude code that's not used on iOS for Wasm too It has similar size constraints. Saves ~1.9MB from the Wasm build. Updates #3157 Signed-off-by: Mihai Parparita <mihai@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
Brad Fitzpatrick	fbc079d82d	ipn/ipnlocal: prevent attempting to run SSH on Synology for now On DSM7 as a non-root user it'll run into problems. And we haven't tested on DSM6, even though it might work, but I doubt it. Updates #3802 Updates tailscale/corp#5468 Change-Id: I75729042e4788f03f9eb82057482a44b319f04f3 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>	2 years ago
Maisem Ali	928530a112	ipn/ipnlocal: shutdown sshServer on tailscale down Also lazify SSHServer initialization to allow restarting the server on a subsequent `tailscale up` Updates #3802 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 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>	2 years ago
Maisem Ali	7cd8c3e839	ssh/tailssh: terminate sessions when tailscaled shutsdown Ideally we would re-establish these sessions when tailscaled comes back up, however we do not do that yet so this is better than leaking the sessions. Updates #3802 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	da601c23e1	ipn/ipnlocal: add missing place where we set the SSH atomic This fixes the "tailscale up --authkey=... --ssh" path (or any "up" path that used Start instead of EditPrefs) which wasn't setting the bit. Updates #3802 Change-Id: Ifca532ec58296fedcedb5582312dfee884367ed7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	fd99c54e10	tailcfg,all: change structs to []*dnstype.Resolver Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	35111061e9	wgengine/netstack, ipn/ipnlocal: serve http://100.100.100.100/ For future stuff. Change-Id: I64615b8b2ab50b57e4eef1ca66fa72e3458cb4a9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	3e1f2d01f7	ipn/ipnlocal: move Ping method from IPN bus to LocalBackend (HTTP) Change-Id: I61759f1dae8d9d446353db54c8b1e13bfffb3287 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 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>	2 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>	2 years ago
Tom DNetto	9dee6adfab	cmd/tailscaled,ipn/ipnlocal,wgengine/...: pass dns.Manager into netstack Needed for a following commit which moves magicDNS handling into netstack. Signed-off-by: Tom DNetto <tom@tailscale.com>	2 years ago
Maisem Ali	3012a2e1ca	ssh/tailssh,ipn/ipnlocal: terminate any active sessions on `up --ssh=false` Currently the ssh session isn't terminated cleanly, instead the packets are just are no longer routed to the in-proc SSH server. This makes it so that clients get a disconnection when the `RunSSH` pref changes to `false`. Updates #3802 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Mihai Parparita	2ec371fe8b	ipn: remove FakeExpireAfter Backend function No callers remain (last one was removed with tailscale/corp@1c095ae08f), and it's pretty esoteric. Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Mihai Parparita	316523cc1e	ipn: remove enforceDefaults option from PrefsFromBytes The Mac client was using it, but it had the effect of the `RouteAll` ("Use Tailscale subnets") pref always being enabled at startup, regardless of the persisted value. enforceDefaults was added to handle cases from ~2 years ago where we ended up with persisted `"RouteAll": false` values in the keychain, but that should no longer be a concern. New users will get the default of it being enabled via `NewPrefs`. There will be a corresponding Mac client change to stop passing in enforceDefaults. For #3962 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 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>	2 years ago
Maisem Ali	637cc1b5fc	ipn/ipnlocal/peerapi: add endpoint to list local interfaces Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 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>	2 years ago
Maisem Ali	1a19aed410	ipn/ipnlocal: do not initialize peer api listeners when shutting down Updates tailscale/corp#4824 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	7a097ccc83	ipn/ipnlocal: close peerapi listeners on LocalBackend.Shutdown For tests. Now that we can always listen (whereas we used to fail prior to `a2c330c496`), some goroutine leak checks were failing in tests in another repo after that change. Change-Id: Id95a4b71167eca61962a48616d79741b9991e0bc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	a2c330c496	ipn/ipnlocal: use the fake peerapi listener as fallback if netstack available The previous commit (`1b89662eff`) this for Android, but we can also use this on any platform if we we would otherwise fail. Change-Id: I4cd78b40e9e77fca5cc8e717dd48ac173101bed4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	1b89662eff	ipn/ipnlocal: make peerapi listener on Android avoid the kernel We intercept the peerapi port in netstack anyway, so there's no reason the linux kernel on Android needs to know about it. It's only getting in the way and causing problems for reasons we don't fully understand. But we don't even need to understand it because it's not relevant anymore. Instead, provide a dummy net.Listener that just sits and blocks to pacify the rest of the code that assumes it can be stuck in a Listener.Accept call and call Listener.Close and Listener.Addr. We'll likely do this for all platforms in the future, if/when we also link in netstack on iOS. Updates #4449 Updates #4293 Updates #3986 Change-Id: Ic2d3fe2f3cee60fc527356a3368830f17aeb75ae Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	8b81254992	ipn/ipnlocal: reject tailscale up --ssh if disabled on tailnet Updates #3802 Change-Id: I3f1e839391fe9b28270f506f4bb8d8e3d36716f5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	cc575fe4d6	net/dns: schedule DoH upgrade explicitly, fix Resolver.Addr confusion Two changes in one: * make DoH upgrades an explicitly scheduled send earlier, when we come up with the resolvers-and-delay send plan. Previously we were getting e.g. four Google DNS IPs and then spreading them out in time (for back when we only did UDP) but then later we added DoH upgrading at the UDP packet layer, which resulted in sometimes multiple DoH queries to the same provider running (each doing happy eyeballs dialing to 4x IPs themselves) for each of the 4 source IPs. Instead, take those 4 Google/Cloudflare IPs and schedule 5 things: first the DoH query (which can use all 4 IPs), and then each of the 4 IPs as UDP later. * clean up the dnstype.Resolver.Addr confusion; half the code was using it as an IP string (as documented) as half was using it as an IP:port (from some prior type we used), primarily for tests. Instead, document it was being primarily an IP string but also accepting an IP:port for tests, then add an accessor method on it to get the IPPort and use that consistently everywhere. Change-Id: Ifdd72b9e45433a5b9c029194d50db2b9f9217b53 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	a04eebf59f	ipn/ipnlocal: also use SSHPolicies when updating filterHash Updates #3802 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	e96dd00652	ipn/ipnlocal: add capability for debugging peers over peerapi The default is still users can debug their own nodes. But like `cd916b728b` did, this adds support for admins to grant additional capabilities with the new tailcfg.CapabilityDebugPeer cap. Updates #4217 Change-Id: Ifce3d9a1f8e8845797970a4f97b393194663d35f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	8f5e5bff1e	cmd/tailscale, etc: make "tailscale up --ssh" fail fast when unavailable Fail on unsupported platforms (must be Linux or macOS tailscaled with WIP env) or when disabled by admin (with TS_DISABLE_SSH_SERVER=1) Updates #3802 Change-Id: I5ba191ed0d8ba4ddabe9b8fc1c6a0ead8754b286 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	ade7bd8745	ssh/tailssh: close sessions on policy change if no longer allowed Updates #3802 Change-Id: I98503c2505b77ac9d0cc792614fcdb691761a70c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	4ec83fbad6	ipn/ipnlocal: only call updateFilter with mutex held And rename to updateFilterLocked to prevent future mistakes. Fixes #4427 Change-Id: I4d37b90027d5ff872a339ce8180f5723704848dc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	cd916b728b	ipn/ipnlocal: add start of inter-user Taildrop Controlled by server-sent capability policy. To be initially used for SSH servers to record sessions to other nodes. Not yet productized into something user-accessible. (Notably, the list of Taildrop targets from the sender side isn't augmented yet.) This purely permits expanding the set of expands a node will accept a drop from. Updates #3802 Updates #4217 Change-Id: Id7a5bccd686490f8ef2cdc7dae7c07c440dc0085 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	16f3520089	all: add arbitrary capability support Updates #4217 RELNOTE=start of WhoIsResponse capability support Change-Id: I6522998a911fe49e2f003077dad6164c017eed9b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	8ee044ea4a	ssh/tailssh: make the SSH server a singleton, register with LocalBackend Remove the weird netstack -> tailssh dependency and instead have tailssh register itself with ipnlocal when linked. This makes tailssh.server a singleton, so we can have a global map of all sessions. Updates #3802 Change-Id: Iad5caec3a26a33011796878ab66b8e7b49339f29 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	df9ce972c7	tailcfg, ipn/ipnlocal: add debug flag to enable one-big-CGNAT/10 route To experiment with avoiding Chrome ERR_NETWORK_CHANGED errors on route changes. Updates #3102 Change-Id: I339da14c684fdac45ac261566aa21bf2198672ff Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	50b4b8b2c6	ipn/ipnlocal: make peerIPs return a sorted slice Currently peerIPs doesn't do any sorting of the routes it returns. This is typically fine, however imagine the case of an HA subnet router failover. When a route R moves from peer A to peer B, the output of peerIPs changes. This in turn causes all the deephash check inside wgengine to fail as the hashed value of [R1, R2] is different than the hashed value of [R2, R1]. When the hash check failes, it causes wgengine to reconfigure all routes in the OS. This is especially problematic for macOS and iOS where we use the NetworkExtension. This commit makes it that the peerIPs are always sorted when returned, thus making the hash be consistent as long as the list of routes remains static. Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	3ae701f0eb	net/tsaddr, wgengine/netstack: add IPv6 range that forwards to site-relative IPv4 This defines a new magic IPv6 prefix, fd7a:115c:a1e0:b1a::/64, a subset of our existing /48, where the final 32 bits are an IPv4 address, and the middle 32 bits are a user-chosen "site ID". (which must currently be 0000:00xx; the top 3 bytes must be zero for now) e.g., I can say my home LAN's "site ID" is "0000:00bb" and then advertise its 10.2.0.0/16 IPv4 range via IPv6, like: tailscale up --advertise-routes=fd7a:115c:a1e0:b1a::bb:10.2.0.0/112 (112 being /128 minuse the /96 v6 prefix length) Then people in my tailnet can: $ curl '[fd7a:115c:a1e0:b1a::bb:10.2.0.230]' <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" .... Updates #3616, etc RELNOTE=initial support for TS IPv6 addresses to route v4 "via" specific nodes Change-Id: I9b49b6ad10410a24b5866b9fbc69d3cae1f600ef Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 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>	2 years ago
Brad Fitzpatrick	5a44f9f5b5	tempfork: temporarily fork gliderlabs/ssh and x/crypto/ssh While we rearrange/upstream things. gliderlabs/ssh is forked into tempfork from our prior fork at `be8b7add40` x/crypto/ssh OTOH is forked at https://github.com/tailscale/golang-x-crypto because it was gnarlier to vendor with various internal packages, etc. Its git history shows where it starts (2c7772ba30643b7a2026cbea938420dce7c6384d). Updates #3802 Change-Id: I546e5cdf831cfc030a6c42557c0ad2c58766c65f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	6fecc16c3b	ipn/ipnlocal: do not process old status messages received out of order When `setWgengineStatus` is invoked concurrently from multiple goroutines, it is possible that the call invoked with a newer status is processed before a call with an older status. e.g. a status that has endpoints might be followed by a status without endpoints. This causes unnecessary work in the engine and can result in packet loss. This patch adds an `AsOf time.Time` field to the status to specifiy when the status was calculated, which later allows `setWgengineStatus` to ignore any status messages it receives that are older than the one it has already processed. Updates tailscale/corp#2579 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	cceacda5eb	ipn/ipnstate: put SSH Host Keys in ipnstate.PeerStatus Updates #3802 Change-Id: I47ba3b4545b25988f375bd867aecd98bb0da8d79 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	d2f3ec8a63	envknob, ipn/ipnlocal: add SSH admin kill switch Updates #3802 Change-Id: I6127907446d1a6be1b097d9ba3b534f2b8eb707f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 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>	2 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>	2 years ago
Maisem Ali	6b9d938c1a	types/views: add generic Slice[T] and remove StringSlice Also make IPPrefixSliceOf use Slice[netaddr.IPPrefix] as it also provides additional functions besides the standard ones provided by Slice[T]. Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 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>	2 years ago
Maisem Ali	888e50e1f6	ipn/ipnlocal: migrate all platforms to controlplane.tailscale.com Updates #3488 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Nick O'Neill	1625e87526	control/controlclient, localapi: shorten expiry time via localapi (#4112 ) Signed-off-by: Nick O'Neill <nick@tailscale.com>	2 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>	2 years ago
Maisem Ali	497324ddf6	ipn/store: add common package for instantiating ipn.StateStores Also move KubeStore and MemStore into their own package. RELNOTE: tsnet now supports providing a custom ipn.StateStore. Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	c9eca9451a	ssh: make it build on darwin For local dev testing initially. Product-wise, it'll probably only be workable on the two unsandboxed builds. Updates #3802 Change-Id: Ic352f966e7fb29aff897217d79b383131bf3f92b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	c4a6d9fa5d	ipn/ipnlocal: generate tailscaled-owned SSH keys as needed Updates #3802 Change-Id: Ie1bc9ae3f3639603b88b4e19b7eb12bea528ff77 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	bb94561c96	net/netutil: fix regression where peerapi would get closed after 1st req I introduced a bug in `8fe503057d` when unifying oneConnListener implementations. The NewOneConnListenerFrom API was easy to misuse (its Close method closes the underlying Listener), and we did (via http.Serve, which closes the listener after use, which meant we were close the peerapi's listener, even though we only wanted its Addr) Instead, combine those two constructors into one and pass in the Addr explicitly, without delegating through to any Listener. Change-Id: I061d7e5f842e0cada416e7b2dd62100d4f987125 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	c7a8f0992d	ipn/ipnlocal: use views for Peer.PrimaryRoutes and Peer.Tags RELNOTE=`tailscale status --json` now shows Tags and PrimaryRoutes Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	9cbb0913be	ipn/{ipnlocal,ipnstate}: add Tags and PrimaryRoutes to PeerStatus Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	f9a50779e2	cmd/tailscaled: add `-state=mem:` to support creation of an ephemeral node. RELNOTE=`tailscaled --state=mem:` registers as an ephemeral node and does not store state to disk. Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	84138450a4	types/logger, logtail: add mechanism to do structured JSON logs e.g. the change to ipnlocal in this commit ultimately logs out: {"logtail":{"client_time":"2022-02-17T20:40:30.511381153-08:00","server_time":"2022-02-18T04:40:31.057771504Z"},"type":"Hostinfo","val":{"GoArch":"amd64","Hostname":"tsdev","IPNVersion":"1.21.0-date.20220107","OS":"linux","OSVersion":"Debian 11.2 (bullseye); kernel=5.10.0-10-amd64"},"v":1} Change-Id: I668646b19aeae4a2fed05170d7b279456829c844 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	bb93e29d5c	tailcfg, ipn/ipnlocal: add Hostinfo.SSH_HostKeys, send when SSH enabled (The name SSH_HostKeys is bad but SSHHostKeys is worse.) Updates #3802 Change-Id: I2a889019c9e8b065b668dd58140db4fcab868a91 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	fbff1555fc	ipnlocal, tailssh: start moving host key stuff into the right spot Make tailssh ask LocalBackend for the SSH hostkeys, as we'll need to distribute them to peers. For now only the hacky use-same-as-actual-host mode is implemented. Updates #3802 Change-Id: I819dcb25c14e42e6692c441186c1dc744441592b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	72d8672ef7	tailcfg: make Node.Hostinfo a HostinfoView Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Ross Zurowski	6d02a48d8d	ipn: add `TailnetStatus` field to `tailscale status --json` (#3865 ) We need to capture some tailnet-related information for some Docker features we're building. This exposes the tailnet name and MagicDNS information via `tailscale status --json`. Fixes tailscale/corp#3670 Signed-off-by: Ross Zurowski <ross@rosszurowski.com>	2 years ago
Brad Fitzpatrick	01e8a152f7	ipn/ipnlocal: log most of Hostinfo once non-verbose at start-up Our previous Hostinfo logging was all as a side effect of telling control. And it got marked as verbose (as it was) This adds a one-time Hostinfo logging that's not verbose, early in start-up. Change-Id: I1896222b207457b9bb12ffa7cf361761fa4d3b3a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	8fe503057d	net/netutil: unify two oneConnListeners into a new package I was about to add a third copy, so unify them now instead. Change-Id: I3b93896aa1249b1250a6b1df4829d57717f2311a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	a19c110dd3	envknob: track, log env knobs in use Fixes #3921 Change-Id: I8186053b5c09c43f0358b4e7fdd131361a6d8f2e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	2db6cd1025	ipn/ipnlocal, wgengine/magicsock, logpolicy: quiet more logs Updates #1548 Change-Id: Ied169f872e93be2857890211f2e018307d4aeadc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	86a902b201	all: adjust some log verbosity Updates #1548 Change-Id: Ia55f1b5dc7dfea09a08c90324226fb92cd10fa00 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	bd90781b34	ipn/ipnlocal, wgengine/netstack: use netstack for peerapi server We're finding a bunch of host operating systems/firewalls interact poorly with peerapi. We either get ICMP errors from the host or users need to run commands to allow the peerapi port: https://github.com/tailscale/tailscale/issues/3842#issuecomment-1025133727 ... even though the peerapi should be an internal implementation detail. Rather than fight the host OS & firewalls, this change handles the server side of peerapi entirely in netstack (except on iOS), so it never makes its way to the host OS where it might be messed with. Two main downsides are: 1) netstack isn't as fast, but we don't really need speed for peerapi. And actually, with fewer trips to/from the kernel, we might actually make up for some of the netstack performance loss by staying in userspace. 2) tcpdump / Wireshark etc packet captures will no longer see the peerapi traffic. Oh well. Crawshaw's been wanting to add packet capture server support to tailscaled, so we'll probably do that sooner now. A future change might also then use peerapi for the client-side (except on iOS). Updates #3842 (probably fixes, as well as many exit node issues I bet) Change-Id: Ibc25edbb895dc083d1f07bd3cab614134705aa39 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	857cd6c0d7	ipn/ipnstate: add TailnetName to status RELNOTE=tailscale status --json \| jq .TailnetName Fixes tailscale/corp#3665 Change-Id: I85de027ba2781eb31ee1e0c5ab913b0dfa5b4c86 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	f3c0023add	wgengine/netstack: add an SSH server experiment Disabled by default. To use, run tailscaled with: TS_SSH_ALLOW_LOGIN=you@bar.com And enable with: $ TAILSCALE_USE_WIP_CODE=true tailscale up --ssh=true Then ssh [any-user]@[your-tailscale-ip] for a root bash shell. (both the "root" and "bash" part are temporary) Updates #3802 Change-Id: I268f8c3c95c8eed5f3231d712a5dc89615a406f0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 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>	2 years ago
Brad Fitzpatrick	3690bfecb0	ipn/ipnlocal: fix cert fetching on macOS GUI platforms And clarify the directory they get written to when under the sandbox. Fixes #3667 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago

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