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2022-09-16cmd/derper,derp: implement per-client rate limitstom/iptablesTom DNetto5-2/+310
Signed-off-by: Tom DNetto <tom@tailscale.com>
2022-09-15net/dnscache: add better logging to bootstrap DNS path (#5640)Andrew Dunham2-1/+136
Change-Id: I4cde3a72e06dac18df856a0cfeac10ab7e3a9108 Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-15portlist: normalise space delimited process names (#5634)Kristoffer Dalby2-0/+19
2022-09-14cmd/tsconnect: use the parent window for `beforeunload` event listenerMihai Parparita1-6/+4
The SSH session may be rendered in a different window that the one that is executing the script. Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-13net/dns/resolver: remove unused responseTimeout constantMihai Parparita1-3/+0
Timeout is now enforced elsewhere, see discussion in https://github.com/tailscale/tailscale/pull/4408#discussion_r970092333. Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-13net/dns: fix fmt error on Revert printnyghtowl1-1/+1
Fixes #5619 Signed-off-by: nyghtowl <warrick@tailscale.com>
2022-09-13logpolicy: add NewWithConfigPath (#5625)Joe Tsai1-3/+13
The version.CmdName implementation is buggy such that it does not correctly identify the binary name if it embeds other go binaries. For now, add a NewWithConfigPath API that allows the caller to explicitly specify this information. Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2022-09-13cmd/tailscaled, tailcfg, hostinfo: add flag to disable logging + supportBrad Fitzpatrick10-16/+59
As noted in #5617, our documented method of blocking log.tailscale.io DNS no longer works due to bootstrap DNS. Instead, provide an explicit flag (--no-logs-no-support) and/or env variable (TS_NO_LOGS_NO_SUPPORT=true) to explicitly disable logcatcher uploads. It also sets a bit on Hostinfo to say that the node is in that mode so we can end any support tickets from such nodes more quickly. This does not yet provide an easy mechanism for users on some platforms (such as Windows, macOS, Synology) to set flags/env. On Linux you'd used /etc/default/tailscaled typically. Making it easier to set flags for other platforms is tracked in #5114. Fixes #5617 Fixes tailscale/corp#1475 Change-Id: I72404e1789f9e56ec47f9b7021b44c025f7a373a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-13wgengine: set fwmark masks in netfilter & ip rulesTom DNetto2-46/+184
This change masks the bitspace used when setting and querying the fwmark on packets. This allows tailscaled to play nicer with other networking software on the host, assuming the other networking software is also using fwmarks & a different mask. IPTables / mark module has always supported masks, so this is safe on the netfilter front. However, busybox only gained support for parsing + setting masks in 1.33.0, so we make sure we arent such a version before we add the "/<mask>" syntax to an ip rule command. Signed-off-by: Tom DNetto <tom@tailscale.com>
2022-09-12cmd/tsconnect: allow xterm.js terminal options to be passed inMihai Parparita1-2/+4
Allows clients to use a custom theme and other xterm.js customization options. Fixes #5610 Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-12wgengine/magicsock: don't use BPF receive when SO_MARK doesn't work.David Anderson2-3/+9
Fixes #5607 Signed-off-by: David Anderson <danderson@tailscale.com>
2022-09-12cmd/tsconnect: allow hostname to be specifiedMihai Parparita2-14/+16
The auto-generated hostname is nice as a default, but there are cases where the client has a more specific name that it can generate. Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-12cmd/tsconnect: fix xterm.js link opening not working when rendered into ↵Mihai Parparita1-1/+3
another window The default WebLinksAddon handler uses window.open(), but that gets blocked by the popup blocker when the event being handled is another window. We instead need to invoke open() on the window that the event was triggered in. Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-12cmd/tailscale: add licenses link to web UIWill Norris3-8/+16
The `tailscale web` UI is the primary interface for Synology and Home Assistant users (and perhaps others), so is the logical place to put our open source license notices. I don't love adding things to what is currently a very minimal UI, but I'm not sure of a better option. Updates tailscale/corp#5780 Signed-off-by: Will Norris <will@tailscale.com>
2022-09-12net/stun: unmap IPv4 addresses in 16 byte STUN repliesBrad Fitzpatrick2-17/+16
Updates #5602 Change-Id: I2276ad2bfb415b9ff52f37444f2a1d74b38543b1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-12cmd/derper: add /generate_204 endpoint (#5601)Andrew Dunham1-1/+10
For captive portal detection. Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-12hostinfo: detect being run in a container in more waysBrad Fitzpatrick1-0/+9
Change-Id: I038ff7705ba232e6cf8dcc9775357ef708d43762 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-11hostinfo, tailcfg: split Hostinfo.OSVersion into separate fieldsBrad Fitzpatrick9-118/+249
Stop jamming everything into one string. Fixes #5578 Change-Id: I7dec8d6c073bddc7dc5f653e3baf2b4bf6b68378 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-11net/dns/publicdns: also support NextDNS DoH query parametersBrad Fitzpatrick2-1/+17
The plan has changed. Doing query parameters rather than path + heades. NextDNS added support for query parameters. Updates #2452 Change-Id: I4783c0a06d6af90756d9c80a7512644ba702388c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-10net/netns: add TS_FORCE_LINUX_BIND_TO_DEVICE for LinuxBrad Fitzpatrick1-0/+6
For debugging a macOS-specific magicsock issue. macOS runs in bind-to-interface mode always. This lets me force Linux into the same mode as macOS, even if the Linux kernel supports SO_MARK, as it usually does. Updates #2331 etc Change-Id: Iac9e4a7429c1781337e716ffc914443b7aa2869d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-10util/mak: deprecate NonNil, add type-safe NonNilSliceForJSON, NonNilMapForJSONBrad Fitzpatrick3-33/+42
And put the rationale in the name too to save the callers the need for a comment. Change-Id: I090f51b749a5a0641897ee89a8fb2e2080c8b782 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-10net/dns/resolver: set DNS-over-HTTPS Accept and User-Agent header on requestsBrad Fitzpatrick1-5/+3
Change-Id: I14b821771681e70405a507f43229c694159265ff Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-09wgengine/router: reduce routing rule priority for openWRT + mwan3Tom DNetto1-16/+80
Fixes #3659 Signed-off-by: Tom DNetto <tom@tailscale.com> Co-authored-by: Ian Foster <ian@vorsk.com>
2022-09-09net/dns/publicdns: support NextDNS DoH URLs with path parametersBrad Fitzpatrick2-0/+13
Updates #2452 Change-Id: I0f1c34cc1672e87e7efd0adfe4088724dd0de3ed Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-09cmd/tsconnect: enable web links addon in the terminalMihai Parparita4-1/+19
More user friendly, and as a side-effect we handle SSH check mode better, since the URL that's output is now clickable. Fixes #5247 Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-09cmd/tsconnect: switch back to public version of xterm npm packageMihai Parparita2-4/+5
xtermjs/xterm.js#4069 was merged and published (in 5.0.0-beta.58), no need for the fork added by 01e6565e8a0193ec940a8eca9129dadb2c05e29d. Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-09cmd/derper: add robots.txt to disallow allBrad Fitzpatrick1-0/+3
Fixes #5565 Change-Id: I5626ec2116d9be451caef651dc301b7a82e35550 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-09licenses: update android licensesLicense Updater1-2/+2
Signed-off-by: License Updater <noreply@tailscale.com>
2022-09-08net/dns, types/dnstypes: update some comments, tests for DoHBrad Fitzpatrick3-1/+23
Clarify & verify that some DoH URLs can be sent over tailcfg in some limited cases. Updates #2452 Change-Id: Ibb25db77788629c315dc26285a1059a763989e24 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-08net/dns/{publicdns,resolver}: add NextDNS DoH supportBrad Fitzpatrick10-35/+251
NextDNS is unique in that users create accounts and then get user-specific DNS IPs & DoH URLs. For DoH, the customer ID is in the URL path. For IPv6, the IP address includes the customer ID in the lower bits. For IPv4, there's a fragile "IP linking" mechanism to associate your public IPv4 with an assigned NextDNS IPv4 and that tuple maps to your customer ID. We don't use the IP linking mechanism. Instead, NextDNS is DoH-only. Which means using NextDNS necessarily shunts all DNS traffic through 100.100.100.100 (programming the OS to use 100.100.100.100 as the global resolver) because operating systems can't usually do DoH themselves. Once it's in Tailscale's DoH client, we then connect out to the known NextDNS IPv4/IPv6 anycast addresses. If the control plane sends the client a NextDNS IPv6 address, we then map it to the corresponding NextDNS DoH with the same client ID, and we dial that DoH server using the combination of v4/v6 anycast IPs. Updates #2452 Change-Id: I3439d798d21d5fc9df5a2701839910f5bef85463 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-08cmd/tsconnect: temporarily switch to xterm.js fork that handles popup windowsMihai Parparita4-24/+74
Allows other work to be unblocked while xtermjs/xterm.js#4069 is worked through. To enable testing the popup window handling, the standalone app allows opening of SSH sessions in new windows by holding down the alt key while pressing the SSH button. Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-08cmd/tsconnect: handle terminal resizes before the SSH session is createdMihai Parparita1-0/+16
Store the requested size is a struct field, and use that when actually creating the SSH session. Fixes #5567 Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-07go.toolchain.rev: bump to Go 1.19.1Brad Fitzpatrick1-1/+1
See https://github.com/tailscale/go/pull/34 Change-Id: I56806358cd1be4a2b8f509883e47c93083d82bdf Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-07tailcfg: fix broken test from comment changeBrad Fitzpatrick1-1/+1
Fix broken build from 255c0472fb0f5c13c40b90eb9da87337da312e63 "Oh, that's safe to commit because most tests are passing and it's just a comment change!", I thought, forgetting I'd added a test that parses its comments. Change-Id: Iae93d595e06fec48831215a98adbb270f3bfda05 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-07tailcfg: reformat CurrentCapabilityVersion to be a bulleted listBrad Fitzpatrick1-38/+38
gofmt in 1.19 is now opinionated about structured text formatting in comments. It did not like our style and kept fighting us whenever we changed these lines. Give up the fight and be a bulleted list for it. See: * https://go.dev/doc/go1.19#go-doc and * https://go.dev/doc/comment Updates #4872 Change-Id: Ifae431218471217168c003ab3b4e03c394ca8105 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-07licenses: update win/apple licensesLicense Updater1-2/+2
Signed-off-by: GitHub <noreply@github.com>
2022-09-07cmd/derper: filter out useless HTTP error logs (#5563)Andrew Dunham1-2/+25
These errors aren't actionable and just fill up logs with useless data. See the following Go issue for more details: https://golang.org/issue/26918 Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-06licenses: update tailscale{,d} licensesLicense Updater1-2/+2
Signed-off-by: License Updater <noreply@tailscale.com>
2022-09-06wgengine/magicsock: fix panic in http debug serverColin Adler1-0/+5
Fixes an panic in `(*magicsock.Conn).ServeHTTPDebug` when the `recentPongs` ring buffer for an endpoint wraps around. Signed-off-by: Colin Adler <colin1adler@gmail.com>
2022-09-06wgengine/netstack: only accept connection after dialing (#5503)Andrew Dunham1-34/+84
If we accept a forwarded TCP connection before dialing, we can erroneously signal to a client that we support IPv6 (or IPv4) without that actually being possible. Instead, we only complete the client's TCP handshake after we've dialed the outbound connection; if that fails, we respond with a RST. Updates #5425 (maybe fixes!) Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-06cmd/tsconnect: add dev-pkg command for two-sided developmentMihai Parparita6-28/+64
Allows imports of the NPM package added by 1a093ef4822b973ec86d481924690349eddba5cb to be replaced with import("http://localhost:9090/pkg/pkg.js"), so that changes can be made in parallel to both the module and code that uses it (without any need for NPM publishing or even building of the package). Updates #5415 Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2022-09-06wgengine/magicsock: add filter to ignore disco to old/other portsJames Tucker2-2/+35
Incoming disco packets are now dropped unless they match one of the current bound ports, or have a zero port*. The BPF filter passes all packets with a disco header to the raw packet sockets regardless of destination port (in order to avoid needing to reconfigure BPF on rebind). If a BPF enabled node has just rebound, due to restart or rebind, it may receive and reply to disco ping packets destined for ports other than those which are presently bound. If the pong is accepted, the pinging node will now assume that it can send WireGuard traffic to the pinged port - such traffic will not reach the node as it is not destined for a bound port. *The zero port is ignored, if received. This is a speculative defense and would indicate a problem in the receive path, or the BPF filter. This condition is allowed to pass as it may enable traffic to flow, however it will also enable problems with the same symptoms this patch otherwise fixes. Fixes #5536 Signed-off-by: James Tucker <james@tailscale.com>
2022-09-06wgengine/magicsock: fix regression in initial bind for jsJames Tucker1-3/+5
1f959edeb0c6ad3a82fcdaa4ca65a02571493cc6 introduced a regression for JS where the initial bind no longer occurred at all for JS. The condition is moved deeper in the call tree to avoid proliferation of higher level conditions. Updates #5537 Signed-off-by: James Tucker <james@tailscale.com>
2022-09-06wgengine/magicksock: remove nullability of RebindingUDPConnsJames Tucker1-47/+13
Both RebindingUDPConns now always exist. the initial bind (which now just calls rebind) now ensures that bind is called for both, such that they both at least contain a blockForeverConn. Calling code no longer needs to assert their state. Signed-off-by: James Tucker <james@tailscale.com>
2022-09-06go.mod, wgengine/wgint: bump wireguard-goBrad Fitzpatrick3-24/+14
For https://github.com/WireGuard/wireguard-go/commit/b51010ba13f0a3e59808fbdb1566cd2c6b834b95 Change-Id: Ibf767dfad98aef7e9f0505d91c0d26f924e046d5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-06net/dnsfallback: allow setting log function (#5550)Andrew Dunham2-10/+38
This broke a test in corp that enforces we don't use the log package. Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-05net/dnsfallback: cache most recent DERP map on disk (#5545)Andrew Dunham4-6/+271
This is especially helpful as we launch newer DERPs over time, and older clients have progressively out-of-date static DERP maps baked in. After this, as long as the client has successfully connected once, it'll cache the most recent DERP map it knows about. Resolves an in-code comment from @bradfitz Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
2022-09-04docs/k8s: make run.sh handle SIGINTMaisem Ali1-3/+10
It was previously using jobcontrol to achieve this, but that apparently doesn't work when there is no tty. This makes it so that it directly handles SIGINT and SIGTERM and passes it on to tailscaled. I tested this works on a Digital Ocean K8s cluster. Fixes #5512 Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-09-03cmd/derper: add flag to run derper in bootstrap-dns-only modeBrad Fitzpatrick1-3/+13
Change-Id: Iba128e94464afa605bc9df1f06a91d296380eed0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-02tsnet: add Server method to listenerWill Norris2-0/+21
Allow callers to verify that a net.Listener is a tsnet.listener by type asserting against this Server method, as well as providing access to the underlying Server. This is initially being added to support the caddy integration in caddyserver/caddy#5002. Signed-off-by: Will Norris <will@tailscale.com>
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