Commit Graph

166 Commits (6831a29f8b9344653aed841543f9bb3e73285b0b)

Author SHA1 Message Date
Brad Fitzpatrick 9475801ebe ipn/ipnlocal: fix E.G.G. port number accounting
Change-Id: Id35461fdde79448372271ba54f6e6af586f2304d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick ed248b04a7 cmd/tailscale: remove leftover debug prints from earlier commit
From 6632504f45

Change-Id: If21789232b3ecc14c1639cf87814af6fa73f535f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Maisem Ali 6632504f45 cmd/tailscale/cli: [up] move lose-ssh check after other validations
The check was happening too early and in the case of error would wait 5
s and then error out. This makes it so that it does validations before
the SSH check.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2 years ago
Brad Fitzpatrick ba3cc08b62 cmd/tailscale/cli: add backwards compatibility 'up' processing for legacy client
Updates tailscale/corp#6781

Change-Id: I843fc810cbec0140d423d65db81e90179d6e0fa5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Kamal Nasser f983962fc6 fix typo in incomplete default routes error message
Signed-off-by: Kamal Nasser <hello@kamal.io>
2 years ago
Mihai Parparita e846481731 cmd/tailscale/cli: use printf and outln consistently
Fix some fmt.Println and fmt.Printf calls that crept in since
5df7ac70d6.

Signed-off-by: Mihai Parparita <mihai@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 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
soypete 412c4c55e2 cmd/tailscale: make up respect explicitly empty --operator= value
Fixes #3808

Signed-off-by: soypete <miriah@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
Brad Fitzpatrick 2bac8b6013 Revert "cmd/tailscale/cli: disallow --ssh on Synology"
This reverts commit 03e3e6abcd
in favor of #4785.

Change-Id: Ied65914106917c4cb8d15d6ad5e093a6299d1d48
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Maisem Ali 03e3e6abcd cmd/tailscale/cli: disallow --ssh on Synology
Updates tailscale/corp#5468
Updates #3802

Signed-off-by: Maisem Ali <maisem@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 67325d334e cmd/tailscale/cli: add lose-ssh risk
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>
2 years ago
Brad Fitzpatrick 87ba528ae0 client/tailscale: move/copy all package funcs to new LocalClient type
Remove all global variables, and clean up tsnet and cmd/tailscale's usage.

This is in prep for using this package for the web API too (it has the
best package name).

RELNOTE=tailscale.com/client/tailscale package refactored w/ LocalClient type

Change-Id: Iba9f162fff0c520a09d1d4bd8862f5c5acc9d7cd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
James Tucker 928d1fddd2 cmd/tailscale: s/-authkey/-auth-key/ in help text
Signed-off-by: James Tucker <james@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 f0e2272e04 cmd/tailscale: unhide 'up --ssh' behind WIP env var
Updates #3802

Change-Id: I99c550c2e4450640b0ee6ab060f178dde1360553
Signed-off-by: Brad Fitzpatrick <bradfitz@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
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
Aaron Klotz f8a4df66de cmd/tailscale/cli, ipn: move exit node IP parsing and validation from cli into prefs.
We need to be able to provide the ability for the GUI clients to resolve and set
the exit node IP from an untrusted string, thus enabling the ability to specify
that information via enterprise policy.

This patch moves the relevant code out of the handler for `tailscale up`,
into a method on `Prefs` that may then be called by GUI clients.

We also update tests accordingly.

Updates https://github.com/tailscale/corp/issues/4239

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
2 years ago
Josh Bleecher Snyder 94409db7e2 cmd/tailscale: rewrite --authkey to --auth-key
That way humans don't have to remember which is correct.

RELNOTE=--auth-key is the new --authkey, but --authkey still works

Updates tailscale/corp#3486

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2 years ago
Brad Fitzpatrick 02bdc654d5 cmd/tailscale: fix up --reset, again
Also fix a somewhat related printing bug in the process where
some paths would print "Success." inconsistently even
when there otherwise was no output (in the EditPrefs path)

Fixes #3830
Updates #3702 (which broke it once while trying to fix it)

Change-Id: Ic51e14526ad75be61ba00084670aa6a98221daa5
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 e6626366a2 cmd/tailscale: let 'tailscale up --reset' do a pref edit
The --reset shouldn't imply that a Backend.Start is necessary.  With
this, it can do a Backend.EditPrefs instead, which then doesn't do all
the heavy work that Start does. Also, Start on Windows behaves
slightly differently than Linux etc in some cases because of tailscaled
running in client mode on Windows (where the GUI supplies the prefs).

Fixes #3702

Change-Id: I75c9f08d5e0052bf623074030a3a7fcaa677abf6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick adc97e9c4d cmd/tailscale: make --accept-routes default true on Windows, macOS GUI
One of the most annoying parts of using the Tailscale CLI on Windows
and the macOS GUI is that Tailscale's GUIs default to running with
"Route All" (accept all non-exitnode subnet routes) but the CLI--being
originally for Linux--uses the Linux default, which is to not accept
subnets.

Which means if a Windows user does, e.g.:

    tailscale up --advertise-exit-node
Or:
    tailscale up --shields-up

... then it'd warn about reverting the --accept-routes option, which the user
never explicitly used.

Instead, make the CLI's default match the platform/GUI's default.

Change-Id: I15c804b3d9b0266e9ca8651e0c09da0f96c9ef8d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Denton Gentry ffb16cdffb cmd/tailscale: add --json for up
Print JSON to stdout containing everything needed for
authentication.

{
  "AuthURL": "https://login.tailscale.com/a/0123456789",
  "QR": "data:image/png;base64,iV...QmCC",
  "BackendState": "NeedsLogin"
}
{
  "BackendState": "Running"
}

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
3 years ago
Brad Fitzpatrick 003089820d cmd/tailscale: fix setting revert checker's finding an exit node
It was using the wrong prefs (intended vs current) to map the current
exit node ID to an IP.

Fixes #3480

Change-Id: I9f117d99a84edddb4cd1cb0df44a2f486abde6c2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 03a323de4e cmd/tailscale: don't allow setting exit node to known invalid value
Fixes #3081

Change-Id: I34c378dfd51ee013c21962dbe79c49b1ba06c0c5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick a8f60cf6e8 cmd/tailscale: clarify which prefless flags don't need revert protection
Fixes #3482

Change-Id: Icb51476b0d78d3758cb04df3b565e372b8289a46
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick f91481075d cmd/tailscale: let --exit-node= take a machine name in addition to IP
If you're online, let tailscale up --exit-node=NAME map NAME to its IP.

We don't store the exit node name server-side in prefs, avoiding
the concern raised earlier.

Fixes #3062

Change-Id: Ieea5ceec1a30befc67e9d6b8a530b3cb047b6b40
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 105c545366 cmd/tailscale/cli: don't complain about --accept-routes true->false on Synology
Fixes #3176

Change-Id: I844883e741dccfa5e7771c853180e9f65fb7f7a4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 5df7ac70d6 cmd/tailscale/cli: add Stdout, Stderr and output through them
So js/wasm can override where those go, without implementing
an *os.File pipe pair, etc.

Updates #3157

Change-Id: I14ba954d9f2349ff15b58796d95ecb1367e8ba3a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 75de4e9cc2 cmd/tailscale/cli: don't ExitOnError on js/wasm
An os.Exit brings down the whole wasm module.

Updates #3157

Change-Id: I3daa97fd854715b901f3dbb04b57d841576b60b1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Maisem Ali 0bf515e780 cmd/tailscale: changes to --advertise-tags should wait for possible
reauth.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Brad Fitzpatrick 2d11503cff cmd/tailscale: add up --qr to show QR code
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Crawshaw cc9cf97cbe cli: web advertise exit node button
A couple of gnarly assumptions in this code, as always with the async
message thing.

UI button is based on the DNS settings in the admin panel.

Co-authored-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
3 years ago
Brad Fitzpatrick b822b5c798 cmd/tailscale: let up --authkey be of form file:/path/to/secret
Fixes #2958

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Josh Bleecher Snyder 865d8c0d23 cmd: upgrade to ffcli v3
None of the breaking changes from v2 to v3 are relevant to us.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Brad Fitzpatrick 7f29dcaac1 cmd/tailscale/cli: make up block until state Running, not just Starting
At "Starting", the DERP connection isn't yet up. After the first netmap
and DERP connect, then it transitions into "Running".

Fixes #2708

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick edb338f542 cmd/tailscale: fix sporadic 'context canceled' error on 'up'
Fixes #2333

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 7b9f02fcb1 cmd/tailscale/cli: document that empty string disable exit nodes, routes
Updates #2529

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 87244eda3f cmd/tailscale/cli: allow effective GOOS to be changed for integration tests
Adds TS_DEBUG_UP_FLAG_GOOS for integration tests to make "tailscale
up" act like other OSes.

For an upcoming change to test #2137.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 1cedd944cf cmd/tailscale/cli: diagnose missing tailscaled on 'up'
Fixes #2029

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Crawshaw 87481282eb ipn: another controlplane synonym
This one doesn't bother me so much, as long term we want a synonym here.

Fixes #2384
Fixes #2386

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
3 years ago
David Crawshaw c84d7baf98 cmd/tailscale/cli: factor out more up code for testing
In theory, some of the other table-driven tests could be moved into this
form now but I didn't want to disturb too much good test code.

Includes a commented-out test for #2384 that is currently failing.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
3 years ago
David Crawshaw c37713b927 cmd/tailscale/cli: accept login server synonym
Fixes #2272

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
3 years ago
Brad Fitzpatrick d2c4e75099 cmd/tailscale/cli: update URL in error message for Synology unsupported feature
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick cdd231cb7d cmd/tailscale/cli: don't warn about iptables=off on Synology
We don't use iptables on Synology, so don't scare the user.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Josh Bleecher Snyder 25df067dd0 all: adapt to opaque netaddr types
This commit is a mishmash of automated edits using gofmt:

gofmt -r 'netaddr.IPPort{IP: a, Port: b} -> netaddr.IPPortFrom(a, b)' -w .
gofmt -r 'netaddr.IPPrefix{IP: a, Port: b} -> netaddr.IPPrefixFrom(a, b)' -w .

gofmt -r 'a.IP.Is4 -> a.IP().Is4' -w .
gofmt -r 'a.IP.As16 -> a.IP().As16' -w .
gofmt -r 'a.IP.Is6 -> a.IP().Is6' -w .
gofmt -r 'a.IP.As4 -> a.IP().As4' -w .
gofmt -r 'a.IP.String -> a.IP().String' -w .

And regexps:

\w*(.*)\.Port = (.*)  ->  $1 = $1.WithPort($2)
\w*(.*)\.IP = (.*)  ->  $1 = $1.WithIP($2)

And lots of manual fixups.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
3 years ago
Brad Fitzpatrick 5190435d6e cmd/tailscale: rewrite the "up" checker, fix bugs
The old way was way too fragile and had felt like it had more special
cases than normal cases. (see #1874, #1860, #1834, etc) It became very
obvious the old algorithm didn't work when we made the output be
pretty and try to show the user the command they need to run in
5ecc7c7200 for #1746)

The new algorithm is to map the prefs (current and new) back to flags
and then compare flags. This nicely handles the OS-specific flags and
the n:1 and 1:n flag:pref cases.

No change in the existing already-massive test suite, except some ordering
differences (the missing items are now sorted), but some new tests are
added for behavior that was broken before. In particular, it now:

* preserves non-pref boolean flags set to false, and preserves exit
  node IPs (mapping them back from the ExitNodeID pref, as well as
  ExitNodeIP),

* doesn't ignore --advertise-exit-node when doing an EditPrefs call
  (#1880)

* doesn't lose the --operator on the non-EditPrefs paths (e.g. with
  --force-reauth, or when the backend was not in state Running).

Fixes #1880

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick e78e26b6fb cmd/tailscale: fix another up warning with exit nodes
The --advertise-routes and --advertise-exit-node flags both mutating
one pref is the gift that keeps on giving.

I need to rewrite the this up warning code to first map prefs back to
flag values and then just compare flags instead of comparing prefs,
but this is the minimal fix for now.

This also includes work on the tests, to make them easier to write
(and more accurate), by letting you write the flag args directly and
have that parse into the upArgs/MaskedPrefs directly, the same as the
code, rather than them being possibly out of sync being written by
hand.

Fixes https://twitter.com/EXPbits/status/1390418145047887877

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 2585edfaeb cmd/tailscale: fix tailscale up --advertise-exit-node validation
Fixes #1859

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 52e1031428 cmd/tailscale: gofmt
From 6d10655dc3

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Avery Pennarun 6d10655dc3 ipnlocal: accept a new opts.UpdatePrefs field.
This is needed because the original opts.Prefs field was at some point
subverted for use in frontend->backend state migration for backward
compatibility on some platforms. We still need that feature, but we
also need the feature of providing the full set of prefs from
`tailscale up`, *not* including overwriting the prefs.Persist keys, so
we can't use the original field from `tailscale up`.

`tailscale up` had attempted to compensate for that by doing SetPrefs()
before Start(), but that violates the ipn.Backend contract, which says
you should call Start() before anything else (that's why it's called
Start()). As a result, doing SetPrefs({ControlURL=...,
WantRunning=true}) would cause a connection to the *previous* control
server (because WantRunning=true), and then connect to the *new*
control server only after running Start().

This problem may have been avoided before, but only by pure luck.

It turned out to be relatively harmless since the connection to the old
control server was immediately closed and replaced anyway, but it
created a race condition that could have caused spurious notifications
or rejected keys if the server responded quickly.

As already covered by existing TODOs, a better fix would be to have
Start() get out of the business of state migration altogether. But
we're approaching a release so I want to make the minimum possible fix.

Fixes #1840.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
3 years ago
Brad Fitzpatrick 962bf74875 cmd/tailscale: fail if tailscaled closes the IPN connection
I was going to write a test for this using the tstest/integration test
stuff, but the testcontrol implementation isn't quite there yet (it
always registers nodes and doesn't provide AuthURLs). So, manually
tested for now.

Fixes #1843

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 90002be6c0 cmd/tailscale: make pref-revert checks ignore OS-irrelevant prefs
This fixes #1833 in two ways:

* stop setting NoSNAT on non-Linux. It only matters on Linux and the flag
  is hidden on non-Linux, but the code was still setting it. Because of
  that, the new pref-reverting safety checks were failing when it was
  changing.

* Ignore the two Linux-only prefs changing on non-Linux.

Fixes #1833

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick fb67d8311c cmd/tailscale: pull out, parameterize up FlagSet creation for tests
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Avery Pennarun 6caa02428e cmd/tailscale/cli/up: "LoggedOut" pref is implicit.
There's no need to warn that it was not provided on the command line
after doing a sequence of up; logout; up --args. If you're asking for
tailscale to be up, you always mean that you prefer LoggedOut to become
false.

Fixes #1828

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
3 years ago
Ross Zurowski b062ac5e86
cmd/tailscale: fix typo in error message (#1807)
Signed-off-by: Ross Zurowski <ross@rosszurowski.com>
3 years ago
Brad Fitzpatrick 5ecc7c7200 cmd/tailscale: make the new 'up' errors prettier and more helpful
Fixes #1746

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick ffe6c8e335 cmd/tailscale/cli: don't do a simple up when in state NeedsLogin
Fixes #1780

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Anderson 30629c430a cmd/tailscale/cli: don't force an interactive login on --reset.
Fixes #1778

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson 67ba6aa9fd cmd/tailscale/cli: fix typo in ExitNodeID mapping.
Prevented turning off exit nodes.

Fixes #1777

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Brad Fitzpatrick 820952daba cmd/tailscale: don't print out old authURL on up --force-reauth
Fixes #1671

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick c91a22c82e cmd/tailscale: don't print auth URL when using a --authkey
Fixes #1755

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick e40e5429c2 cmd/tailscale/cli: make 'tailscale up' protect --advertise-exit-node removal
The new "tailscale up" checks previously didn't protect against
--advertise-exit-node being omitted in the case that
--advertise-routes was also provided. It wasn't done before because
there is no corresponding pref for "--advertise-exit-node"; it's a
helper flag that augments --advertise-routes. But that's an
implementation detail and we can still help users. We just have to
special case that pref and look whether the current routes include
both the v4 and v6 /0 routes.

Fixes #1767

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick dedbd483ea cmd/tailscale/cli: don't require explicit --operator if it matches $USER
This doesn't make --operator implicit (which we might do in the
future), but it at least doesn't require repeating it in the future
when it already matches $USER.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 8f3e453356 ipn, cmd/tailscale/cli: add pref to configure sudo-free operator user
From discussion with @danderson.

Fixes #1684 (in a different way)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 49808ae6ea ipn{,/ipnlocal}, cmd/tailscale/cli: don't check pref reverts on initial up
The ipn.NewPrefs func returns a populated ipn.Prefs for historical
reasons. It's not used or as important as it once was, but it hasn't
yet been removed. Meanwhile, it contains some default values that are
used on some platforms. Notably, for this bug (#1725), Windows/Mac use
its Prefs.RouteAll true value (to accept subnets), but Linux users
have always gotten a "false" value for that, because that's what
cmd/tailscale's CLI default flag is _for all operating systems_.  That
meant that "tailscale up" was rightfully reporting that the user was
changing an implicit setting: RouteAll was changing from true with
false with the user explicitly saying so.

An obvious fix might be to change ipn.NewPrefs to return
Prefs.RouteAll == false on some platforms, but the logic is
complicated by darwin: we want RouteAll true on windows, android, ios,
and the GUI mac app, but not the CLI tailscaled-on-macOS mode. But
even if we used build tags (e.g. the "redo" build tag) to determine
what the default is, that then means we have duplicated and differing
"defaults" between both the CLI up flags and ipn.NewPrefs. Furthering
that complication didn't seem like a good idea.

So, changing the NewPrefs defaults is too invasive at this stage of
the release, as is removing the NewPrefs func entirely.

Instead, tweak slightly the semantics of the ipn.Prefs.ControlURL
field. This now defines that a ControlURL of the empty string means
both "we're uninitialized" and also "just use the default".

Then, once we have the "empty-string-means-unintialized" semantics,
use that to suppress "tailscale up"'s recent implicit-setting-revert
checking safety net, if we've never initialized Tailscale yet.

And update/add tests.

Fixes #1725

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 4df6e62fbc ipn: add DefaultControlURL const, replace few literals with it
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick f1d45bc4bb cmd/tailscale/cli: pull out prefsFromUpArgs for testability, add tests
Will add more tests later but this locks in all the existing warnings
and errors at least, and some of the existing non-error behavior.

Mostly I want this to exist before I actually fix #1725.

Updates #1725

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 4948ff6ecb cmd/tailscale/cli: treat nil and non-nil zero length slices as equiv prefs
Updates #1725

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 2f422434aa cmd/tailscale/cli: wait on the right contexts in up
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Ross Zurowski c748c20fba
cmd/tailscale: fix command descriptions (#1710)
Signed-off-by: Ross Zurowski <ross@rosszurowski.com>
3 years ago
Brad Fitzpatrick a8d95a18b2 cmd/tailscale/cli: add up --unattended for Windows
RELNOTE=Windows CLI behavior change: ForceDaemon now off by default

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Maisem Ali 1b9d8771dc ipn/ipnlocal,wgengine/router,cmd/tailscale: add flag to allow local lan access when routing traffic via an exit node.
For #1527

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Brad Fitzpatrick 9972c02b60 cmd/tailscale/cli: don't let up change prefs based on implicit flag values
This changes the behavior of "tailscale up".

Previously "tailscale up" always did a new Start and reset all the settings.

Now "tailscale up" with no flags just brings the world [back] up.
(The opposite of "tailscale down").

But with flags, "tailscale up" now only is allowed to change
preferences if they're explicitly named in the flags. Otherwise it's
an error. Or you need to use --reset to explicitly nuke everything.

RELNOTE=tailscale up change

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 958782c737 cmd/{tailscale,tailscaled}: use netstack for subnet routing on Synology
Updates #707
Fixes #451
Fixes tailscale/tailscale-synology#52 (just make it work by default)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 3b451509dd cmd/tailscale/cli: make advertise-{routes,exit-node} available unconditionally
It was only Linux and BSDs before, but now with netstack mode, it also works on
Windows and darwin. It's not worth limiting it to certain platforms.

Tailscaled itself can complain/fail if it doesn't like the settings
for the mode/OS it's operating under.

Updates #707

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 799973a68d ipn: move Options.Notify to its own method
We already had SetNotifyCallback elsewhere on controlclient, so use
that name.

Baby steps towards some CLI refactor work.

Updates tailscale/tailscale#1436
3 years ago
Brad Fitzpatrick 1bd14a072c cmd/tailscale, ipn/localapi: move IP forwarding check to tailscaled, API
Instead of having the CLI check whether IP forwarding is enabled, ask
tailscaled. It has a better idea. If it's netstack, for instance, the
sysctl values don't matter. And it's possible that only the daemon has
permission to know.

Fixes #1626

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 0406a7436a cmd/tailscale/cli: use double hypens, make default usage func more clear
Mash up some code from ffcli and std's flag package to make a default
usage func that's super explicit for those not familiar with the Go
style flags. Only show double hyphens in usage text (but still accept both),
and show default values, and only show the proper usage of boolean flags.

Fixes #1353
Fixes #1529

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick d0dffe33c0 cmd/tailscale, ipn/localapi: use localapi for status, not IPN acrobatics
Yay simpler code.

Tested on Linux, macOS and Windows.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 0c3e9722cc cmd/tailscale/cli: fix typo in comment
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 98ab533324 cmd/tailscale/cli: include GOOS in BSD warning message
instead of just lowercase "bsd"

Updates #1475

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Anderson 380a3526f6 cmd/tailscale/cli: warn if using subnet routing on BSD
Fixes #1475.

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Christine Dodrill deff20edc6
cmd/tailscale/cli: don't permit setting self IP as exit node (#1491)
This change makes it impossible to set your own IP address as the exit node for this system.

Fixes #1489

Signed-off-by: Christine Dodrill <xe@tailscale.com>
3 years ago
Brad Fitzpatrick cc99059fc2 Revert "--advertise-routes option enabled in Mac tailscale CLI; it checks for IP forwarding enabled"
This reverts commit 08949d4ef1.

I think this code was aspirational. There's no code that sets up the
appropriate NAT code using pfctl/etc. See #911 and #1475.

Updates #1475
Updates #911
3 years ago
David Anderson ebf3f2fd9f cmd/tailscale/cli: add CLI option to offer an exit node to the tailnet.
Finishes up linux part of #1154.

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Brad Fitzpatrick 7ad3af2141 cmd/tailscale/cli: remove outdated TODO
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Anderson b9c2231fdf ipn: program exit node into the data plane according to user pref.
Part of #1153, #1154. Fixes #1224.

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Brad Fitzpatrick d76334d2f0 ipn: split LocalBackend off into new ipn/ipnlocal package
And move a couple other types down into leafier packages.

Now cmd/tailscale doesn't bring in netlink, magicsock, wgengine, etc.

Fixes #1181

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick c7d4bf2333 cmd/tailscale/cli: recommend sudo for 'tailscale up' on failure
Fixes #1220
3 years ago
David Anderson ab9cccb292 cmd/tailscale/cli: require v4 and v6 default routes to be advertised together.
Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Josh Bleecher Snyder 2fe770ed72 all: replace wgcfg.IP and wgcfg.CIDR with netaddr types
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Avery Pennarun f99f6608ff Reverse earlier "allow tag without 'tag:' prefix" changes.
These accidentally make the tag syntax more flexible than was intended,
which will create forward compatibility problems later. Let's go back
to the old stricter parser.

Revert "cmd/tailscale/cli: fix double tag: prefix in tailscale up"
Revert "cmd/tailscale/cli, tailcfg: allow tag without "tag:" prefix in 'tailscale up'"

This reverts commit a702921620.
This reverts commit cd07437ade.

Affects #861.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
4 years ago
Brad Fitzpatrick 696e160cfc cmd/tailscale/cli: fix double tag: prefix in tailscale up
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago