Commit Graph

54 Commits

Author SHA1 Message Date
Brad Fitzpatrick b4be4f089f safesocket: make clear which net.Conns are winio types
Follow-up to earlier #9049.

Updates #9049

Change-Id: I121fbd2468770233a23ab5ee3df42698ca1dabc2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-10-26 10:11:08 -07:00
Aaron Klotz 95671b71a6 ipn, safesocket: use Windows token in LocalAPI
On Windows, the idiomatic way to check access on a named pipe is for
the server to impersonate the client on its current OS thread, perform
access checks using the client's access token, and then revert the OS
thread's access token back to its true self.

The access token is a better representation of the client's rights than just
a username/userid check, as it represents the client's effective rights
at connection time, which might differ from their normal rights.

This patch updates safesocket to do the aforementioned impersonation,
extract the token handle, and then revert the impersonation. We retain
the token handle for the remaining duration of the connection (the token
continues to be valid even after we have reverted back to self).

Since the token is a property of the connection, I changed ipnauth to wrap
the concrete net.Conn to include the token. I then plumbed that change
through ipnlocal, ipnserver, and localapi as necessary.

I also added a PermitLocalAdmin flag to the localapi Handler which I intend
to use for controlling access to a few new localapi endpoints intended
for configuring auto-update.

Updates https://github.com/tailscale/tailscale/issues/755

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
2023-10-26 09:43:19 -06:00
Skip Tavakkolian 6fd1961cd7 safesocket, paths: add Plan 9 support
Updates #5794

Change-Id: I69150ec18d101f55baabb38613512cde858447cb
Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Signed-off-by: Skip Tavakkolian <skip.tavakkolian@gmail.com>
2023-09-07 08:48:21 -07:00
Paul Scott 9a56184bef
cmd/tailscale: Check App Store tailscaled dialable before selecting. (#9234)
PR #9217 attempted to fix the same issue, but suffered from not letting the
user connect to non-oss tailscaled if something was listening on the socket, as
the --socket flag doesn't let you select the mac apps.

Rather than leave the user unable to choose, we keep the mac/socket preference
order the same and check a bit harder whether the macsys version really is
running. Now, we prefer the App Store Tailscale (even if it's Stopped) and you
can use --socket to sswitch. But if you quit the App Store Tailscale, we'll try
the socket without needing the flag.

Fixes #5761
Signed-off-by: Paul Scott <408401+icio@users.noreply.github.com>
2023-09-06 12:43:10 +01:00
James Tucker f844791e15 safesocket: enable test to run on Windows unpriviliged
I manually tested that the code path that relaxes pipe permissions is
not executed when run with elevated priviliges, and the test also passes
in that case.

Updates #7876

Signed-off-by: James Tucker <jftucker@gmail.com>
2023-04-19 19:06:18 -07:00
James Tucker 8dec1a8724 .github/workflows: reenable Windows CI, disable broken tests
We accidentally switched to ./tool/go in
4022796484 which resulted in no longer
running Windows builds, as this is attempting to run a bash script.

I was unable to quickly fix the various tests that have regressed, so
instead I've added skips referencing #7876, which we need to back and
fix.

Updates #7262
Updates #7876

Signed-off-by: James Tucker <james@tailscale.com>
2023-04-14 14:13:53 -07:00
Maisem Ali 4441609d8f safesocket: remove the now unused WindowsLocalPort
Also drop the port param from safesocket.Listen. #cleanup

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-01-30 10:33:02 -08:00
Will Norris 71029cea2d all: update copyright and license headers
This updates all source files to use a new standard header for copyright
and license declaration.  Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.

This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.

Updates #6865

Signed-off-by: Will Norris <will@tailscale.com>
2023-01-27 15:36:29 -08:00
Maisem Ali adc302f428 all: use named pipes on windows
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-11-30 04:05:26 +05:00
Brad Fitzpatrick 0cb2ccce7f safesocket: remove the IPN protocol support
Updates #6417

Change-Id: I78908633de842d83b2cc8b10a864a0f88ab1b113
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-28 20:44:59 -08:00
Brad Fitzpatrick da8def8e13 all: remove old +build tags
The //go:build syntax was introduced in Go 1.17:

https://go.dev/doc/go1.17#build-lines

gofmt has kept the +build and go:build lines in sync since
then, but enough time has passed. Time to remove them.

Done with:

    perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build')

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-04 07:25:42 -07:00
Eng Zer Jun f0347e841f refactor: move from io/ioutil to io and os packages
The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.

Reference: https://golang.org/doc/go1.16#ioutil
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
2022-09-15 21:45:53 -07:00
Brad Fitzpatrick 116f55ff66 all: gofmt for Go 1.19
Updates #5210

Change-Id: Ib02cd5e43d0a8db60c1f09755a8ac7b140b670be
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-08-02 10:08:05 -07:00
Mihai Parparita cfe68d0a86
safesocket: log warning when running sandboxed Mac binary as root
It won't work, provide a clue in the error output.

Fixes #3063

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-04-28 16:22:19 -07:00
Brad Fitzpatrick 21413392cf safesocket: fix CLI on standalone mac GUI build
Tested three macOS Tailscale daemons:

- App Store (Network Extension)
- Standalone (macsys)
- tailscaled

And two types of local IPC each:

- IPN
- HTTP

And two CLI modes:

- sandboxed (running the GUI binary as the CLI; normal way)
- open source CLI hitting GUI (with #4525)

Bonus: simplifies the code.

Fixes tailscale/corp#4559

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-04-25 21:47:00 -07:00
Josh Bleecher Snyder 63cd581c3f safesocket: add ConnectionStrategy, provide control over fallbacks
fee2d9fad added support for cmd/tailscale to connect to IPNExtension.
It came in two parts: If no socket was provided, dial IPNExtension first,
and also, if dialing the socket failed, fall back to IPNExtension.

The second half of that support caused the integration tests to fail
when run on a machine that was also running IPNExtension.
The integration tests want to wait until the tailscaled instances
that they spun up are listening. They do that by dialing the new
instance. But when that dial failed, it was falling back to IPNExtension,
so it appeared (incorrectly) that tailscaled was running.
Hilarity predictably ensued.

If a user (or a test) explicitly provides a socket to dial,
it is a reasonable assumption that they have a specific tailscaled
in mind and don't want to fall back to IPNExtension.
It is certainly true of the integration tests.

Instead of adding a bool to Connect, split out the notion of a
connection strategy. For now, the implementation remains the same,
but with the details hidden a bit. Later, we can improve that.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-12-09 15:46:38 -08:00
Josh Bleecher Snyder c8829b742b all: minor code cleanup
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-12-09 15:46:38 -08:00
Brad Fitzpatrick 0edd2d1cd5 safesocket: add js/wasm implementation with in-memory net.Conn
Updates #3157

Change-Id: Ia35b1e259011fb86f8c4e01f62146f9fd4c9b7c6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-07 12:13:14 -08:00
Brad Fitzpatrick 2b082959db safesocket: add WindowsLocalPort const
Remove all the 41112 references.

Change-Id: I2d7ed330d457e3bb91b7e6416cfb2667611e50c4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-05 14:05:13 -07:00
Brad Fitzpatrick 2ce5fc7b0a safesocket: fail early on js/wasm
Updates #3157

Change-Id: Ib78efb3b1ba34ca4fb34296033b95327188774a7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-27 14:53:28 -07:00
Brad Fitzpatrick 82117f7a63 safesocket: actually fix CLI on macsys build
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-09-24 13:58:26 -07:00
Brad Fitzpatrick 5bc6d17f87 safesocket: fix CLI for macsys GUI variant
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-09-24 12:35:24 -07:00
Brad Fitzpatrick 21cb0b361f safesocket: add connect retry loop to wait for tailscaled
Updates #2708

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-08-31 15:13:42 -07:00
slowy07 ac0353e982 fix: typo spelling grammar
Signed-off-by: slowy07 <slowy.arfy@gmail.com>
2021-08-24 07:55:04 -07:00
Josh Bleecher Snyder a5da4ed981 all: gofmt with Go 1.17
This adds "//go:build" lines and tidies up existing "// +build" lines.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-08-05 15:54:00 -07:00
Josh Bleecher Snyder 24db1a3c9b safesocket: print full lsof command on failure
This makes it easier to manually run the command
to discover why it is failing.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-07-20 13:35:31 -07:00
Josh Bleecher Snyder 130c5e727b safesocket: reduce log spam while running integration tests
Instead of logging lsof execution failures to stdout,
incorporate them into the returned error.

While we're here, make it clear that the file
success case always returns a nil error.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-07-20 13:35:31 -07:00
Josh Bleecher Snyder 7a08c159e6 safesocket: create the test socket in a temp dir
This allows the test to be run inside a mounted filesystem,
which I'm doing now as a I develop on a linux VM.

Fixes #2367.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-07-08 16:57:37 -07:00
Josh Bleecher Snyder 737151ea4a safesocket: delete unused function
Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>
2021-05-04 08:54:50 -07:00
Brad Fitzpatrick fb67d8311c cmd/tailscale: pull out, parameterize up FlagSet creation for tests
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-05-03 09:23:55 -07:00
Brad Fitzpatrick 97204fdc52 safesocket: remove/update some old TODOs
Windows auth is done by looking at the owner of the TCP connection.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-04-19 11:35:02 -07:00
David Crawshaw e67f1b5da0 client/tailscale, cmd/tailscale/cli: plumb --socket through
Without this, `tailscale status` ignores the --socket flag on macOS and
always talks to the IPNExtension, even if you wanted it to inspect a
userspace tailscaled.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2021-03-30 10:09:14 -07:00
Brad Fitzpatrick e453c7ca57 safesocket: use right version of gofmt
sigh

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-05 13:44:14 -08:00
Brad Fitzpatrick f11cb811cc safesocket: support finding tailscale port/auth token from sandboxed CLI
Previously the CLI could only find the HTTP auth token when running
the CLI outside the sandbox, not like
/Applications/Tailscale.app/Contents/MacOS/Tailscale when that was
from the App Store.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-05 13:33:30 -08:00
Denton Gentry 524fb2c190 safesocket: add FreeBSD to PlatformUsesPeerCreds
FreeBSD is supported by peercred now.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-03-03 15:33:13 -08:00
Brad Fitzpatrick be779b3587 safesocket, ipn/ipnserver: unify peercred info, fix bug on FreeBSD etc
FreeBSD wasn't able to run "tailscale up" since the recent peercred
refactoring.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-02 11:23:26 -08:00
Brad Fitzpatrick d3efe8caf6 safesocket, ipn/ipnserver: look up peer creds on Darwin
And open up socket permissions like Linux, now that we know who
connections are from.

This uses the new inet.af/peercred that supports Linux and Darwin at
the moment.

Fixes #1347
Fixes #1348

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-16 20:38:44 -08:00
Brad Fitzpatrick dec01ef22b safesocket: make ConnectDefault use paths pkg, fixing tailscaled-on-macOS
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-15 11:33:12 -08:00
Brad Fitzpatrick bbb4631e04 safesocket, wgengine: add some darwin failure diagnostic hints 2021-02-15 08:40:52 -08:00
Brad Fitzpatrick 914a486af6 safesocket: refactor macOS auth code, pull out separate LocalTCPPortAndToken 2021-01-29 14:34:57 -08:00
Brad Fitzpatrick 60e189f699 cmd/hello: use safesocket client to connect 2021-01-29 13:49:17 -08:00
Brad Fitzpatrick 54d0d83b67 safesocket: on Linux, make /var/run/tailscale be 0755
Continuation of earlier two umask changes,
5611f290eb and
d6e9fb1df0.

This change mostly affects us, running tailscaled as root by hand (wit
a umask of 0077), not under systemd. End users running tailscaled
under systemd won't have a umask.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-21 13:23:14 -08:00
Brad Fitzpatrick 5611f290eb ipn, ipnserver: only require sudo on Linux for mutable CLI actions
This partially reverts d6e9fb1df0, which modified the permissions
on the tailscaled Unix socket and thus required "sudo tailscale" even
for "tailscale status".

Instead, open the permissions back up (on Linux only) but have the
server look at the peer creds and only permit read-only actions unless
you're root.

In the future we'll also have a group that can do mutable actions.

On OpenBSD and FreeBSD, the permissions on the socket remain locked
down to 0600 from d6e9fb1df0.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-15 10:13:00 -08:00
Brad Fitzpatrick d6e9fb1df0 all: adjust Unix permissions for those without umasks
Fixes tailscale/corp#1165

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-11 19:24:41 -08:00
Brad Fitzpatrick d8e67ca2ab safesocket: gofmt
gofmt differences between versions :(
2020-07-20 14:40:19 -07:00
Brad Fitzpatrick f562c35c0d safesocket: support connecting to Mac TCP server from within App Sandbox 2020-07-20 14:23:50 -07:00
Brad Fitzpatrick 5362e952e1 safesocket: gofmt
Was developed on a random machine without my normal environment.
2020-03-30 11:23:18 -07:00
Brad Fitzpatrick fee2d9fad4 safesocket: connect to the macOS network extension on darwin (as last resort)
(For cmd/tailscale CLI support on macOS)

Signed-off-by: Brad Fitzpatrick <brad@danga.com>
2020-03-29 22:15:28 -07:00
Brad Fitzpatrick b3d9eab1fe safesocket: make some effort to create parent directory of sock 2020-03-03 11:47:21 -08:00
Brad Fitzpatrick 04e6b77774 safesocket: delete incorrect build tag
Leftover from copying one file to another to create safesocket.go
in the earlier documentation change (29f7d64091).
2020-02-25 09:02:52 -08:00