Printing to log.Printf by default made sense when there was
no automatic uploading to log.tailscale.io.
However, now that we support that by default,
logging to log.Printf if Server.Logf is nil seems superfluous.
The tsnet package is also intended to be instantiated as a library.
Thus, a single process can multiple tsnet instances running simultaneously.
The default behavior of each logging to log.Printf makes the
os.Stderr of the main process unreadable.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
It is not idiomatic for Go code to panic for situations that
can be normal. For example, if a server receives PrivateID
from a client, it is normal for the server to call
PrivateID.PublicID to validate that the PublicID matches.
However, doing so would panic prior to this change.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
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>
refactor logpolicy config loading to make it easier to reuse from
outside the package. Within tsnet, setup a basic logtail config.
Signed-off-by: Will Norris <will@tailscale.com>
Fixes the current http://pkgs.tailscale.com/ redirect to https:///
as that server doesn't configure the Port80Handler.FQDN field.
Change-Id: Iff56e6127a46c306ca97738d91b217bcab32a582
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
This reverts commit 03e3e6abcd
in favor of #4785.
Change-Id: Ied65914106917c4cb8d15d6ad5e093a6299d1d48
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We weren't wiring up netstack.Impl to the LocalBackend in some cases
on Windows. This fixes Windows 7 when run as a service.
Updates #4750 (fixes after pull in to corp repo)
Change-Id: I9ce51b797710f2bedfa90545776b7628c7528e99
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We can't do Noise-over-HTTP in Wasm/JS (because we don't have bidirectional
communication), but we should be able to do it over WebSockets. Reuses
derp WebSocket support that allows us to turn a WebSocket connection
into a net.Conn.
Updates #3157
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Currently we only support "via-<site-id>.<IPv4>", however that does not
work with Google Chrome which parses `http://via-1.10.0.0.1` as a search
string and not as a URL. This commit introduces "<IPv4>.via-<site-id>"
(`http://10.0.0.1.via-1`) which is parsed correctly by Chrome.
Updates #3616
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Per post-submit code review feedback of 1336fb740b from @maisem.
Change-Id: Ic5c16306cbdee1029518448642304981f77ea1fd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This makes it so that the user is notified that the action
they are about to take may result in them getting disconnected from
the machine. It then waits for 5s for the user to maybe Ctrl+C out of
it.
It also introduces a `--accept-risk=lose-ssh` flag for automation, which
allows the caller to pre-acknowledge the risk.
The two actions that cause this are:
- updating `--ssh` from `true` to `false`
- running `tailscale down`
Updates #3802
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Use unix.ByteSliceToString in osVersionFreebsd and osVersionLinux to
convert the Utsname.Release []byte field to string.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
As already done in osVersionFreebsd. This will allow to use the Utsname
fields as []byte for easier conversion to string.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Also lazify SSHServer initialization to allow restarting the server on a
subsequent `tailscale up`
Updates #3802
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Currently, killing a SCP copy with a Ctrl+C leaves the session hanging
even though the stdout copy goroutine fails with an io.EOF. Taking a
step back, when we are unable to send any more data back to the client
we should just terminate the session as the client will stop getting any
response from the server anyways.
Updates #3802
Signed-off-by: Maisem Ali <maisem@tailscale.com>
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>
Saves some allocs. Not hot, but because we can now.
And a const instead of a var.
Change-Id: Ieb2b64534ed38051c36b2c0aa2e82739d9d0e015
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Fixes#4647
It seems that Windows creates a link-local address for the TUN driver, seemingly
based on the (fixed) adapter GUID. This results in a fixed MAC address, which
for some reason doesn't handle loopback correctly. Given the derived link-local
address is preferred for lookups (thanks LLMNR), traffic which addresses the
current node by hostname uses this broken address and never works.
To address this, we remove the broken link-local address from the wintun adapter.
Signed-off-by: Tom DNetto <tom@tailscale.com>
AFAICT this isn't documented on MSDN, but based on the issue referenced below,
NRPT rules are not working when a rule specifies > 50 domains.
This patch modifies our NRPT rule generator to split the list of domains
into chunks as necessary, and write a separate rule for each chunk.
For compatibility reasons, we continue to use the hard-coded rule ID, but
as additional rules are required, we generate new GUIDs. Those GUIDs are
stored under the Tailscale registry path so that we know which rules are ours.
I made some changes to winutils to add additional helper functions in support
of both the code and its test: I added additional registry accessors, and also
moved some token accessors from paths to util/winutil.
Fixes https://github.com/tailscale/coral/issues/63
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
c2b907c965 moved UBUNTU_VERSION out
of the ubuntu case and into linuxmint, but linuxmint wasn't the
only Ubuntu-based system which needed it. Restore UBUNTU_VERSION
handling in the ubuntu case.
Break elementaryOS out into its own handling so we can get the
version number handling correct for keyring support.
Tested on an elementaryOS 6.1 VM.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
I wrote this code way back at the beginning of my tenure at Tailscale when we
had concerns about needing to restore deleted machine keys from backups.
We never ended up using this functionality, and the code is now getting in the
way, so we might as well remove it.
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
For now just checks that we can build cmd/tailscale/cli, will be
broadened once we can actually build more things.
Updates #3157
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
