Commit Graph

756 Commits (5e0ff494a5ba19e869ee1f30cbb0822c7c2cdc05)
 

Author SHA1 Message Date
Brad Fitzpatrick 5e0ff494a5 derp: change NewClient constructor to an option pattern
(The NewMeshClient constructor I added recently was gross in
retrospect at call sites, especially when it wasn't obvious that a
meshKey empty string meant a regular client)
4 years ago
Brad Fitzpatrick 4d599d194f derp, derp/derphttp: add key accessors, add Client.RecvDetail
Client.RecvDetail returns a connection generation so interested clients
can detect when a reconnect happened. (Will be needed for #388)
4 years ago
Brad Fitzpatrick b33c86b542 derp: add an unexported key.Public zero value variable to be less verbose 4 years ago
Brad Fitzpatrick b663ab4685 cmd/derper: treat self-connection connection watch as no-op
Updates #388
4 years ago
Brad Fitzpatrick 5798826990 cmd/derper: add /home/bradfitz/keys to default mesh key search list 4 years ago
David Anderson e01a4c50ba go.mod: require Go 1.14, since we use some of its features.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 5a32f8e181 wgengine/router: also accept exit code 254 from `ip rule del`.
iproute2 3.16.0-2 from Debian Jessie (oldoldstable) doesn't return
exit code 2 when deleting a non-existent IP rule.

Fixes #434

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 484b7fc9a3 derp, cmd/derper: add frameWatchConns, framePeerPresent for inter-DERP routing
This lets a trusted DERP client that knows a pre-shared key subscribe
to the connection list. Upon subscribing, they get the current set
of connected public keys, and then all changes over time.

This lets a set of DERP server peers within a region all stay connected to
each other and know which clients are connected to which nodes.

Updates #388

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
David Anderson c62b80e00b cmd/tailscale: fix inverted flag meanings.
The flags were --no-blah for a brief time, then we switched them to
--blah=true/false with a default of true, but didn't fix the boolean
inversions in the code. So up was down, true was false, etc.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson cc687fc3e6 version: always include the long form version in describe.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 08a38f21c9 wgengine/router: don't filter subnet routing in netfilter.
We have a filter in tailscaled itself now, which is more robust
against weird network topologies (such as the one Docker creates).

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson c71754eba2 ipn/ipnserver: revert decoder memory limit.
The zstd library treats that limit as a hard cap on decompressed
size, in the mode we're using it, rather than a window size.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson d4127db0fe logpolicy: add a temporary fixup for #247.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 0dac03876a logpolicy: don't put log state in /.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Elias Naur 364a8508b2 ipn: add Hostname override to Prefs
Overriding the hostname is required for Android, where os.Hostname
is often just "localhost".

Updates #409

Signed-off-by: Elias Naur <mail@eliasnaur.com>
4 years ago
Dmytro Shynkevych 73c40c77b0
filter: prevent escape of QDecode to the heap (#417)
Performance impact:

name              old time/op  new time/op  delta
Filter/tcp_in-4   70.7ns ± 1%  30.9ns ± 1%  -56.30%  (p=0.008 n=5+5)
Filter/tcp_out-4  58.6ns ± 0%  19.4ns ± 0%  -66.87%  (p=0.000 n=5+4)
Filter/udp_in-4   96.8ns ± 2%  55.5ns ± 0%  -42.64%  (p=0.016 n=5+4)
Filter/udp_out-4   120ns ± 1%    79ns ± 1%  -33.87%  (p=0.008 n=5+5)

Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
4 years ago
David Anderson 83b6b06cc4 cmd/tailscale: fix broken build, result of borked stash pop. 4 years ago
David Anderson 3c7791f6bf cmd/tailscale: remove double negation arguments.
--no-snat becomes --snat-subnet-routes
--no-single-routes becomes --host-routes

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 5aae6b734d version: support major.minor.patch tags without breaking Apple builds.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 984a699219 cmd/tailscale: warn to stderr that netcheck -format=json isn't stable 4 years ago
Brad Fitzpatrick 24009241bf net/netns: move SOCKS dialing to netns for now
This lets control & logs also use SOCKS dials.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick cf0d19f0ab net/tlsdial, derp/derphttp: finish DERPNode.CertName validation 4 years ago
Brad Fitzpatrick 722673f307 Update go4.org/mem, adjust to revised API. 4 years ago
Brad Fitzpatrick a5d6c9d616 net/netns: optimize defaultRouteInterface a bit
It'll be called a bunch, so worth a bit of effort. Could go further, but not yet.
(really, should hook into wgengine/monitor and only re-read on netlink changes?)

name                     old time/op    new time/op    delta
DefaultRouteInterface-8    60.8µs ±11%    44.6µs ± 5%  -26.65%  (p=0.000 n=20+19)

name                     old alloc/op   new alloc/op   delta
DefaultRouteInterface-8    3.29kB ± 0%    0.55kB ± 0%  -83.21%  (p=0.000 n=20+20)

name                     old allocs/op  new allocs/op  delta
DefaultRouteInterface-8      9.00 ± 0%      6.00 ± 0%  -33.33%  (p=0.000 n=20+20)
4 years ago
Brad Fitzpatrick 9e5d79e2f1 wgengine/magicsock: drop a bytes.Buffer sync.Pool, use logger.ArgWriter instead 4 years ago
Brad Fitzpatrick becce82246 net/netns, misc tests: remove TestOnlySkipPrivilegedOps, argv checks
The netns UID check is sufficient for now. We can do something else
later if/when needed.
4 years ago
Brad Fitzpatrick 7a410f9236 net/netns: unindent, refactor to remove some redunant code
Also:
* always error on Control failing. That's very unexpected.
* pull out sockopt funcs into their own funcs for easier future testing
4 years ago
Brad Fitzpatrick 45b139d338 net/netns: remove redundant build tag
Filename is sufficient.
4 years ago
Brad Fitzpatrick dcd7a118d3 net/netns: add a test that tailscaleBypassMark stays in sync between packages 4 years ago
Brad Fitzpatrick 1e837b8e81 net/netns: refactor the sync.Once usage a bit 4 years ago
Avery Pennarun e7ae6a2e06 net/netns, wgengine/router: support Linux machines that don't have 'ip rule'.
We'll use SO_BINDTODEVICE instead of fancy policy routing. This has
some limitations: for example, we will route all traffic through the
interface that has the main "default" (0.0.0.0/0) route, so machines
that have multiple physical interfaces might have to go through DERP to
get to some peers. But machines with multiple physical interfaces are
very likely to have policy routing (ip rule) support anyway.

So far, the only OS I know of that needs this feature is ChromeOS
(crostini). Fixes #245.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Avery Pennarun 8575b21ca8 Merge branch 'master' of github.com:tailscale/tailscale
* 'master' of github.com:tailscale/tailscale:
  tailcfg: remove unused, unimplemented DERPNode.CertFingerprint for now
  net/netns: also don't err on tailscaled -fake as a regular user
  net/netcheck: fix HTTPS fallback bug from earlier today
  net/netns: don't return an error if we're not root and running the tailscale binary
4 years ago
Avery Pennarun e46238a2af wgengine: separately dedupe wireguard configs and router configs.
Otherwise iOS/macOS will reconfigure their routing every time anything
minor changes in the netmap (in particular, endpoints and DERP homes),
which is way too often.

Some users reported "network reconfigured" errors from Chrome when this
happens.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Avery Pennarun f0b6ba78e8 wgengine: don't pass nil router.Config objects.
These are hard for swift to decode in the iOS app.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Brad Fitzpatrick 096d7a50ff tailcfg: remove unused, unimplemented DERPNode.CertFingerprint for now 4 years ago
Brad Fitzpatrick 765695eaa2 net/netns: also don't err on tailscaled -fake as a regular user
That's one of my dev workflows.
4 years ago
Brad Fitzpatrick 7f68e097dd net/netcheck: fix HTTPS fallback bug from earlier today
My earlier 3fa58303d0 tried to implement
the net/http.Tranhsport.DialTLSContext hook, but I didn't return a
*tls.Conn, so we ended up sending a plaintext HTTP request to an HTTPS
port. The response ended up being Go telling as such, not the
/derp/latency-check handler's response (which is currently still a
404). But we didn't even get the 404.

This happened to work well enough because Go's built-in error response
was still a valid HTTP response that we can measure for timing
purposes, but it's not a great answer. Notably, it means we wouldn't
be able to get a future handler to run server-side and count those
latency requests.
4 years ago
Brad Fitzpatrick 1407540b52 net/netns: don't return an error if we're not root and running the tailscale binary
tailscale netcheck was broken otherwise.

We can fix this a better way later; I'm just fixing a regression in
some way because I'm trying to work on netcheck at the moment.
4 years ago
David Anderson 5114df415e net/netns: set the bypass socket mark on linux.
This allows tailscaled's own traffic to bypass Tailscale-managed routes,
so that things like tailscale-provided default routes don't break
tailscaled itself.

Progress on #144.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 3fa58303d0 netcheck: address some HTTP fallback measurement TODOs 4 years ago
Brad Fitzpatrick db2a216561 wgengine/magicsock: don't log on UDP send errors if address family known missing
Fixes #376
4 years ago
Brad Fitzpatrick d3134ad0c8 syncs: add AtomicBool 4 years ago
Brad Fitzpatrick 7247e896b5 net/netcheck: add Report.IPv4 and another TODO 4 years ago
Brad Fitzpatrick dd6b96ba68 types/logger: add TS_DEBUG_LOG_RATE knob to easily turn off rate limiting 4 years ago
David Crawshaw cf5d25e15b wgengine: ensure pingers are gone before returning from Close
We canceled the pingers in Close, but didn't wait around for their
goroutines to be cleaned up. This caused the ipn/e2e_test to catch
pingers in its resource leak check.

This commit introduces an object, but also simplifies the semantics
around the pinger's cancel functions. They no longer need to be called
while holding the mutex.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
4 years ago
Brad Fitzpatrick 004780b312 ipn: restore LiveDERPs assignment in LocalBackend.parseWgStatus
Updates #421 (likely fixes it; need to do an iOS build to be sure)
4 years ago
David Anderson 03682cb271 control/controlclient: use netns package to dial connections.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 1617a232e1 logpolicy: remove deprecated DualStack directive.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson a6bd3a7e53 logpolicy: use netns for dialing log.tailscale.io. 4 years ago
David Anderson e9f7d01b91 derp/derphttp: make DERP client use netns for dial-outs. 4 years ago