Commit Graph

274 Commits

Author SHA1 Message Date
Brad Fitzpatrick e41075dd4a net/interfaces: work around race fetching routing table
Fixes #1345
Updates golang/go#45736

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-04-23 13:23:19 -07:00
David Anderson 30f5d706a1 net/dns/resolver: remove unnecessary/racy WaitGroup.
Fixes #1663

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-22 19:17:37 -07:00
David Anderson 89c81c26c5 net/dns: fix resolved match domains when no nameservers are provided.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-20 17:10:39 -07:00
David Anderson 4be26b269f net/dns: correctly capture all traffic in non-split configs.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-20 16:57:46 -07:00
David Anderson ca283ac899 net/dns: remove config in openresolv when given an empty DNS config.
Part of #1720.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-20 16:19:34 -07:00
David Anderson 53213114ec net/dns: make debian_resolvconf correctly clear DNS configs.
More of #1720.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-20 15:51:14 -07:00
David Anderson 3b1ab78954 net/dns: restore resolv.conf when given an empty config in directManager.
Fixes #1720.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-20 15:14:40 -07:00
David Anderson 158328ba24 net/dns: remove ForceSplitDNSForTesting.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-20 12:50:08 -07:00
Naman Sood 71b7e48547
net/tsaddr: expand ephemeral nodes range to /64
Signed-off-by: Naman Sood <mail@nsood.in>
2021-04-19 15:54:53 -04:00
Naman Sood b85d80b37f
net/tsaddr: add new IP range for ephemeral nodes in Tailscale ULA (#1715)
Signed-off-by: Naman Sood <mail@nsood.in>
2021-04-16 14:47:55 -04:00
David Anderson bb0710d51d net/dns: add debugging traces to DNS manager selection on linux.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-14 15:52:41 -07:00
David Anderson 4b70c7b717 net/dns: fix inverted test for NetworkManager.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-14 15:52:22 -07:00
David Anderson 4849a4d3c8 net/dns: error out on linux if /etc/resolv.conf can't be read.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-14 15:35:32 -07:00
David Anderson 1f9b73a531 net/dns: fix freebsd DNS manager selection.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-14 15:34:59 -07:00
AdamKorcz 2243bb48c2 stun fuzzer: Small fix
Signed-off-by: AdamKorcz <adam@adalogics.com>
2021-04-14 08:17:46 -07:00
Brad Fitzpatrick c2ca2ac8c4 net/dns: fix FreeBSD build
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-04-13 17:38:17 -07:00
David Anderson 84bd50329a net/dns: fix staticheck.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-13 17:28:37 -07:00
David Anderson d6bb11b5bf net/dns: implement correct manager detection on linux.
Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-13 17:19:00 -07:00
David Anderson 9ef932517b net/dns: fix NM's GetBaseConfig when no configs exist.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-13 17:19:00 -07:00
David Anderson fe3b1ab747 net/dns: refactor dbus connection setup in resolved manager.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-13 17:19:00 -07:00
David Anderson 854d5d36a1 net/dns: return error from NewOSManager, use it to initialize NM.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-12 15:51:37 -07:00
David Anderson 9aa33b43e6 net/dns: support split and unsplit DNS in NetworkManager.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-12 14:34:08 -07:00
David Anderson 87eb8384f5 net/dns: fix up NetworkManager configurator a bit.
Clear LLMNR and mdns flags, update reasoning for our settings,
and set our override priority harder than before when we want
to be primary resolver.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-11 23:19:50 -07:00
David Anderson 3d81e6260b net/dns: set resolved DefaultRoute setting according to split-dns mode.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-11 20:53:28 -07:00
David Anderson cca230cc23 net/dns: fix staticcheck errors.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-11 20:53:28 -07:00
Brad Fitzpatrick 4b47393e0c net/dns: pacify staticcheck for now
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-04-11 20:43:15 -07:00
David Anderson a7340c2015 net/dns: support split DNS in systemd-resolved.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-11 18:14:23 -07:00
David Anderson 84430cdfa1 net/dns: improve NetworkManager detection, using more DBus.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-11 15:22:06 -07:00
David Anderson 9a48bac8ad net/dns: rename resolvconf.go to debian_resolvconf.go.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 23:31:14 -07:00
David Anderson 9831f1b183 net/dns: also include 'tail' and 'base' files when fixing up resolv.conf.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 23:01:11 -07:00
David Anderson e43afe9140 net/dns: implement prior config reading for debian resolvconf.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 22:37:13 -07:00
David Anderson 143e5dd087 net/dns: rename script variable.
Debian resolvconf is not legacy, it's alive and well,
just historically before the other implementations.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 21:28:27 -07:00
David Anderson 55b39fa945 net/dns: add documentation to openresolv's config fetch.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 20:21:05 -07:00
David Anderson 61b361bac0 net/dns: teach the openresolv manager to read DNS config.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 19:37:11 -07:00
David Anderson 58760f7b82 net/dns: split resolvconfManager into a debian and an openresolv manager.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 18:55:05 -07:00
David Anderson 5480189313 net/dns: implement a DNS override workaround for legacy resolvconf.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 17:58:13 -07:00
David Anderson 1a371b93be util/dnsname: add FQDN type, use throughout codebase.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-10 17:58:13 -07:00
AdamKorcz 7a1813fd24 Added 2 fuzzers
Signed-off-by: AdamKorcz <adam@adalogics.com>
2021-04-10 11:40:10 -07:00
David Anderson e638a4d86b net/dns: make directManager support split DNS, and work in sandboxes.
Fixes #1495, #683.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-09 02:52:21 -07:00
David Anderson 2685260ba1 net/dns: add temporary fallback to quad-9 resolver for split-DNS testing.
This allows split-DNS configurations to not break clients on OSes that
haven't yet been ported to understand split DNS, by falling back to quad-9
as a global resolver when handed an "impossible to implement"
split-DNS config.

Part of #953. Needs to be removed before shipping 1.8.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-08 23:26:22 -07:00
David Anderson b9e194c14b net/dns: add missing FQDN qualification.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-08 23:07:16 -07:00
David Anderson b74a8994ca net/dns: make FQDN dot style consistent in more places.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-08 22:03:32 -07:00
David Anderson 6def647514 net/dns/resolver: don't avoid tailscale routes for DNS forwarding.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-08 12:20:42 -07:00
David Anderson 4a64d2a603 net/dns: some post-review cleanups.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-07 15:40:31 -07:00
David Anderson 720c1ad0f0 net/dns: insert OS base config when emulating split DNS.
Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-07 15:40:31 -07:00
David Anderson e560be6443 net/dns: sort matchDomains to avoid test flake.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-07 15:40:31 -07:00
David Anderson 68f76e9aa1 net/dns: add GetBaseConfig to OSConfigurator interface.
Part of #953, required to make split DNS work on more basic
platforms.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-07 15:40:31 -07:00
David Anderson fe9cd61d71 net/dns: add tests for DNS config generation.
Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-07 15:40:31 -07:00
David Anderson 0ba6d03768 net/dns/resolver: add a test helper to get at the resolver config.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-07 15:40:31 -07:00
David Anderson da4cc8bbb4 net/dns: handle all possible translations of high-level DNS config.
With this change, all OSes can sort-of do split DNS, except that the
default upstream is hardcoded to 8.8.8.8 pending further plumbing.
Additionally, Windows 8-10 can do split DNS fully correctly, without
the 8.8.8.8 hack.

Part of #953.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-04-07 15:40:31 -07:00