tailscale

Commit Graph

Author	SHA1	Message	Date
Joe Tsai	1b4e4cc1e8	wgengine/netlog: new package for traffic flow logging (#5864 ) The Logger type managers a logtail.Logger for extracting statistics from a tstun.Wrapper. So long as Shutdown is called, it ensures that logtail and statistic gathering resources are properly cleared up. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Maisem Ali	ecf6cdd830	ssh/tailssh: add TestSSHAuthFlow Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Joe Tsai	84e8f25c21	net/tstun: rename statististics method (#5852 ) Rename StatisticsEnable as SetStatisticsEnabled to be consistent with other similarly named methods. Rename StatisticsExtract as ExtractStatistics to follow the convention where methods start with a verb. It was originally named with Statistics as a prefix so that statistics related methods would sort well in godoc, but that property no longer holds. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Joe Tsai	dd045a3767	net/flowtrack: add json tags to Tuple (#5849 ) By convention, JSON serialization uses camelCase. Specify such names on the Tuple type. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Joe Tsai	a73c423c8a	net/tunstats: add Counts.Add (#5848 ) The Counts.Add method merges two Counts together. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Joe Tsai	24ebf161e8	net/tstun: instrument Wrapper with statistics gathering (#5847 ) If Wrapper.StatisticsEnable is enabled, then per-connection counters are maintained. If enabled, Wrapper.StatisticsExtract must be periodically called otherwise there is unbounded memory growth. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Joe Tsai	2934c5114c	net/tunstats: new package to track per-connection counters (#5818 ) High-level API: type Statistics struct { ... } type Counts struct { TxPackets, TxBytes, RxPackets, RxBytes uint64 } func (Statistics) UpdateTx([]byte) func (Statistics) UpdateRx([]byte) func (*Statistics) Extract() map[flowtrack.Tuple]Counts The API accepts a []byte instead of a packet.Parsed so that a future implementation can directly hash the address and port bytes, which are contiguous in most IP packets. This will be useful for a custom concurrent-safe hashmap implementation. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Mihai Parparita	8343b243e7	all: consistently initialize Logf when creating tsdial.Dialers Most visible when using tsnet.Server, but could have resulted in dropped messages in a few other places too. Fixes #5743 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Josh Soref	d4811f11a0	all: fix spelling mistakes Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>	2 years ago
Brad Fitzpatrick	bb7be74756	net/dns/publicdns: permit more NextDNS profile bits in its IPv6 suffix I brain-o'ed the math earlier. The NextDNS prefix is /32 (actually /33, but will guarantee last bit is 0), so we have 128-32 = 96 bits (12 bytes) of config/profile ID that we can extract. NextDNS doesn't currently use all those, but might. Updates #2452 Change-Id: I249bd28500c781e45425fd00fd3f46893ae226a2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Andrew Dunham	a5fab23e8f	net/dns: format OSConfig correctly with no pointers (#5766 ) Fixes tailscale/tailscale#5669 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	2 years ago
Emmanuel T Odeke	f981b1d9da	all: fix resource leaks with missing .Close() calls Fixes #5706 Signed-off-by: Emmanuel T Odeke <emmanuel@orijtech.com>	2 years ago
Andrew Dunham	b1867457a6	doctor: add package for running in-depth healthchecks; use in bugreport (#5413 ) Change-Id: Iaa4e5b021a545447f319cfe8b3da2bd3e5e5782b Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	2 years ago
James Tucker	f7cb535693	net/speedtest: retune to meet iperf on localhost in a VM - removed some in-flow time calls - increase buffer size to 2MB to overcome syscall cost - move relative time computation from record to report time Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
James Tucker	146f51ce76	net/packet: fix filtering of short IPv4 fragments The fragment offset is an 8 byte offset rather than a byte offset, so the short packet limit is now in fragment block size in order to compare with the offset value. The packet flags are in the first 3 bits of the flags/frags byte, and so after conversion to a uint16 little endian value they are at the start, not the end of the value - the mask for extracting "more fragments" is adjusted to match this byte. Extremely short fragments less than 80 bytes are dropped, but fragments over 80 bytes are now accepted. Fixes #5727 Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
Andrew Dunham	c6162c2a94	net/netcheck: add check for captive portal (#5593 ) This doesn't change any behaviour for now, other than maybe running a full netcheck more often. The intent is to start gathering data on captive portals, and additionally, seeing this in the 'tailscale netcheck' command should provide a bit of additional information to users. Updates #1634 Change-Id: I6ba08f9c584dc0200619fa97f9fde1a319f25c76 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	2 years ago
Denton Gentry	42f1d92ae0	net/netns: implement UseSocketMark for Android. Build fails on Android: `../../../../go/pkg/mod/tailscale.com@v1.1.1-0.20220916223019-65c24b6334e9/wgengine/magicsock/magicsock_linux.go:133:12: undefined: netns.UseSocketMark` Signed-off-by: Denton Gentry <dgentry@tailscale.com>	2 years ago
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>	2 years ago
Brad Fitzpatrick	74674b110d	envknob: support changing envknobs post-init Updates #5114 Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Andrew Dunham	cf61070e26	net/dnscache: add better logging to bootstrap DNS path (#5640 ) Change-Id: I4cde3a72e06dac18df856a0cfeac10ab7e3a9108 Signed-off-by: Andrew Dunham <andrew@tailscale.com>	2 years ago
Mihai Parparita	82e82d9b7a	net/dns/resolver: remove unused responseTimeout constant 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>	2 years ago
nyghtowl	0f16640546	net/dns: fix fmt error on Revert print Fixes #5619 Signed-off-by: nyghtowl <warrick@tailscale.com>	2 years ago
David Anderson	7c49db02a2	wgengine/magicsock: don't use BPF receive when SO_MARK doesn't work. Fixes #5607 Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
Brad Fitzpatrick	024257ef5a	net/stun: unmap IPv4 addresses in 16 byte STUN replies Updates #5602 Change-Id: I2276ad2bfb415b9ff52f37444f2a1d74b38543b1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	708b7bff3d	net/dns/publicdns: also support NextDNS DoH query parameters 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>	2 years ago
Brad Fitzpatrick	81bc4992f2	net/netns: add TS_FORCE_LINUX_BIND_TO_DEVICE for Linux 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>	2 years ago
Brad Fitzpatrick	e7376aca25	net/dns/resolver: set DNS-over-HTTPS Accept and User-Agent header on requests Change-Id: I14b821771681e70405a507f43229c694159265ff Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	c14361e70e	net/dns/publicdns: support NextDNS DoH URLs with path parameters Updates #2452 Change-Id: I0f1c34cc1672e87e7efd0adfe4088724dd0de3ed Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	2aade349fc	net/dns, types/dnstypes: update some comments, tests for DoH 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>	2 years ago
Brad Fitzpatrick	58abae1f83	net/dns/{publicdns,resolver}: add NextDNS DoH support 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>	2 years ago
Andrew Dunham	f52a659076	net/dnsfallback: allow setting log function (#5550 ) This broke a test in corp that enforces we don't use the log package. Signed-off-by: Andrew Dunham <andrew@tailscale.com>	2 years ago
Andrew Dunham	b8596f2a2f	net/dnsfallback: cache most recent DERP map on disk (#5545 ) 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>	2 years ago
Kris Brandow	19008a3023	net/dnscache: use net/netip Removes usage of net.IP and net.IPAddr where possible from net/dnscache. Fixes #5282 Signed-off-by: Kris Brandow <kris.brandow@gmail.com>	2 years ago
Brad Fitzpatrick	9bd9f37d29	go.mod: bump wireguard/windows, which moves to using net/netip Updates #5162 Change-Id: If99a3f0000bce0c01bdf44da1d513f236fd7cdf8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	9f6c8517e0	net/dns: set OS DNS to 100.100.100.100 for route-less ExtraRecords [cap 41] If ExtraRecords (Hosts) are specified without a corresponding split DNS route and global DNS is specified, then program the host OS DNS to use 100.100.100.100 so it can blend in those ExtraRecords. Updates #1543 Change-Id: If49014a5ecc8e38978ff26e54d1f74fe8dbbb9bc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	68d9d161f4	net/dns: [win] fix regression in disableDynamicUpdate Somehow I accidentally set the wrong registry value here. It should be DisableDynamicUpdate=1 and not EnableDNSUpdate=0. This is a regression from `545639e`. Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Nahum Shalman	214242ff62	net/dns/publicdns: Add Mullvad DoH See https://mullvad.net/en/help/dns-over-https-and-dns-over-tls/ The Mullvad DoH servers appear to only speak HTTP/2 and the use of a non-nil DialContext in the http.Transport means that ForceAttemptHTTP2 must be set to true to be able to use them. Signed-off-by: Nahum Shalman <nahamu@gmail.com>	2 years ago
Maisem Ali	9197dd14cc	net/dns: [win] add MagicDNS entries to etc/hosts This works around the 2.3s delay in short name lookups when SNR is enabled. C:\Windows\System32\drivers\etc\hosts file. We only add known hosts that match the search domains, and we populate the list in order of Search Domains so that our matching algorithm mimics what Windows would otherwise do itself if SNR was off. Updates #1659 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Kris Brandow	9ae1161e85	net/dnscache: fix v4addrs to return only v4 addrs Update the v4addrs function to filter out IPv6 addresses. Fixes regression from `8725b14056`. Signed-off-by: Kris Brandow <kris.brandow@gmail.com>	2 years ago
Kris Brandow	8f38afbf8e	net/stun: convert to use net/netip.AddrPort Convert ParseResponse and Response to use netip.AddrPort instead of net.IP and separate port. Fixes #5281 Signed-off-by: Kris Brandow <kris.brandow@gmail.com>	2 years ago
Maisem Ali	25865f81ee	net/dns: disable NetBIOS on Tailscale interfaces Like LLMNR, NetBIOS also adds resolution delays and we don't support it anyway so just disable it on the interface. Updates #1659 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	545639ee44	util/winutil: consolidate interface specific registry keys Code movement to allow reuse in a follow up PR. Updates #1659 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	1cff719015	net/dns: [win] respond with SERVFAIL queries when no resolvers Currently we forward unmatched queries to the default resolver on Windows. This results in duplicate queries being issued to the same resolver which is just wasted. Updates #1659 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Andrew Dunham	d942a2ff56	net/dnscache: try IPv6 addresses first (#5349 ) Signed-off-by: Andrew Dunham <andrew@tailscale.com> Signed-off-by: Andrew Dunham <andrew@tailscale.com>	2 years ago
Maisem Ali	3bb57504af	net/dns/resolver: add comments clarifying nil error returns Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	4497bb0b81	net/dns/resolver: return SERVFAIL when no upstream resolvers set Otherwise we just keep looping over the same thing again and again. ``` dns udp query: upstream nameservers not set dns udp query: upstream nameservers not set dns udp query: upstream nameservers not set ``` Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	ec9d13bce5	hostinfo, net/netcheck: use CutPrefix Updates #5309 Change-Id: I37e594cfd245784bf810c493de68a66d3ff20677 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	18109c63b0	net/socks5: use new Go 1.19 binary.AppendByteOrder.AppendUintX Updates #4872 Change-Id: I43db63d2ba237324bc1cd87d4261197f14cb1088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Andrew Dunham	f0d6f173c9	net/netcheck: try ICMP if UDP is blocked (#5056 ) Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	2 years ago
Maisem Ali	a9f6cd41fd	all: use syncs.AtomicValue Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago

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671 Commits (db863bf00fa7fc4a13833e068a5df064c9021ffa)