tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	e2b3d9aa5f	all: s/Magic DNS/MagicDNS/ for consistency Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	232cfda280	wgengine/router: report to control when setPrivateNetwork fails Fixes #1503 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	d580b3f09e	wgengine/router: fix go vet failure on BSDs Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Aleksandar Pesic	25d2dd868b	wgengine/router: flushdns in windows when router config changes Fixes: https://github.com/tailscale/tailscale/issues/1430 Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>	4 years ago
David Anderson	fa6110e47b	wgengine/router: don't touch interface routes Developed by a cast of dozens. Fixes #1448 Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Denton Gentry	04e72f95cc	wgengine/router: add OpenBSD IPv6 support. Similar to FreeBSD in https://github.com/tailscale/tailscale/issues/1307, add IPv6 addresses with a prefix length of 48. Fixes https://github.com/tailscale/tailscale/issues/1372 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Denton Gentry	bcea88da46	wgengine: support FreeBSD with IPv6. Fixes https://github.com/tailscale/tailscale/issues/1307 for keepsies. We cannot set the tun interface address as a /128 on FreeBSD, due to https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218508 Instead we set the interface address as a /48, which is enabled by commit `82edf94df7`. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Denton Gentry	c8af6bc009	Revert "freebsd: ignore IPv6 for now" This reverts commit `061422affc`. We have a way to support IPv6 on FreeBSD now. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Denton Gentry	061422affc	freebsd: ignore IPv6 for now FreeBSD tun devices don't work with the way we implement IPv6 https://github.com/tailscale/tailscale/issues/1307 At least for now, remove any IPv6 addresses from the netmap. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
David Anderson	1cb0ffc3ff	wgengine/router: make windows gracefully handle disabled IPv4 or IPv6. This is necessary because either protocol can be disabled globally by a Windows registry policy, at which point trying to touch that address family results in "Element not found" errors. This change skips programming address families that Windows tell us are unavailable. Fixes #1396. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	8d77dfdacb	wgengine/router: add a dummy IPv6 address if needed for default routing. Fixes #1339 Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	793cb131f0	wgengine/router: toggle killswitch when using default routes on windows. Fixes #1398. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	54d7070121	wgengine/router: correctly read IPv6 routes when diffing. Fixes #1185. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	2d96215d97	wgengine/router: make Linux delRoute idempotent, cidrDiff fail late as possible This makes cidrDiff do as much as possible before failing, and makes a delete of an already-deleted rule be a no-op. We should never do this ourselves, but other things on the system can, and this should help us recover a bit. Also adds the start of root-requiring tests. TODO: hook into wgengine/monitor and notice when routes are changed behind our back, and invalidate our routes map and re-read from kernel (via the ip command) at least on the next reconfig call. Updates tailscale/corp#1338 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	96a488e37e	wgengine/router: simplify func normalizeCIDR using netaddr method	4 years ago
Brad Fitzpatrick	88ab0173a7	wgengine/router: fix BSD router to support multiple local addrs, IPv6 Fixes #1201	4 years ago
Brad Fitzpatrick	1ec64bc94d	wgengine/router: add another Windows firewall rule to allow incoming UDP Based on @sailorfrag's research. Fixes #1312 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 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>	4 years ago
Brad Fitzpatrick	a2aa6cd2ed	wgengine/router: clarify disabled IPv6 message on Linux	4 years ago
David Anderson	267531e4f8	wgengine/router: probe better for v6 policy routing support. Previously we disabled v6 support if the disable_policy knob was missing in /proc, but some kernels support policy routing without exposing the toggle. So instead, treat disable_policy absence as a "maybe", and make the direct `ip -6 rule` probing a bit more elaborate to compensate. Fixes #1241. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	c7fc4a06da	wgengine/router: don't configure IPv6 on Linux when IPv6 is unavailable Fixes #1214 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	4fea604979	wgengine/router: stop setPrivateNetwork goroutine on configureInterface failure On Windows, configureInterface starts a goroutine reconfiguring the Windows firewall. But if configureInterface fails later, that goroutine kept running and likely failing forever, spamming logs. Make it stop quietly if its launching goroutine filed.	4 years ago
Alex Brainman	6e4231c03c	wgengine/router/dns: remove unused code Commit 68ddf1 removed code that reads `SOFTWARE\Tailscale IPN\SearchList` registry value. But the commit left code that writes that value. So now this package writes and never reads the value. Remove the code to stop pointless work. Updates #853 Signed-off-by: Alex Brainman <alex.brainman@gmail.com>	4 years ago
Brad Fitzpatrick	0d94fe5f69	wgengine/router: disable IPv6 on Linux if ip rule -6 fails (#1074 ) Updates #562 Fixes #973 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 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
David Crawshaw	2b2a16d9a2	wgengine/router/dns: reduce windows registry key open timeout The windows key timeout is longer than the wgengine watchdog timeout, which means we never reach the timeout, instead the process exits. Reduce the timeout so if we do hit it, at least the process continues. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	4 years ago
David Crawshaw	b4f70d8232	wgengine/router/dns: use the correct interface GUID On Win10, there's a hardcoded GUID and this works. On Win7, this GUID changes and we need to ask the tun for its LUID and convert that from the GUID. This commit uses the computed GUID that is placed in InterfaceName. Diagnosed by Jason Donnenfeld. (Thanks!)	4 years ago
Brad Fitzpatrick	15c064f76f	wgengine/router/dns: remove unsafe endianness detection on Linux	4 years ago
Brad Fitzpatrick	f9659323df	wgengine/router/dns: fix typo in comment	4 years ago
Brad Fitzpatrick	053a1d1340	all: annotate log verbosity levels on most egregiously spammy log prints Fixes #924 Fixes #282 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	6db9c4a173	wgenginer/router/dns: use constant from golang.org/x/sys/windows Made available in https://golang.org/cl/277153	4 years ago
Aleksandar Pesic	0dc295a640	Isolate WireGuard code into a separate file with appropriate copyright info in header. Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>	4 years ago
Aleksandar Pesic	d854fe95d2	Trivial change in function description. Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>	4 years ago
Aleksandar Pesic	338fd44657	Replace registry-access code, update wireguard-go and x/sys/windows. Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>	4 years ago
Aleksandar Pesic	274d32d0aa	Prepare for the new wireguard-go API. Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>	4 years ago
Brad Fitzpatrick	fc8bc76e58	wgengine/router: lock goroutine to OS thread before using OLE [windows] See https://github.com/tailscale/tailscale/issues/921#issuecomment-727526807 Not yet sure whether this is our problem, but it can't hurt at least, and seems like what we're supposed to do. Updates #921	4 years ago
David Anderson	a664aac877	wgengine/router: disable IPv6 if v6 policy routing is unavailable. Fixes #895. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	ebd96bf4a9	wgengine/router/dns: use OpenKeyWait to set DNS configuration. Fixes tailscale/corp#839. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	119101962c	wgengine/router: don't double-prefix dns log messages [Windows]	4 years ago
Brad Fitzpatrick	28f6552646	wgengine/router/dns: run ipconfig /registerdns async, log timing Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	01ee638cca	Change some os.IsNotExist to errors.Is(err, os.ErrNotExist) for non-os errors. os.IsNotExist doesn't unwrap errors. errors.Is does. The ioutil.ReadFile ones happened to be fine but I changed them so we're consistent with the rule: if the error comes from os, you can use os.IsNotExist, but from any other package, use errors.Is. (errors.Is always would also work, but not worth updating all the code) The motivation here was that we were logging about failure to migrate legacy relay node prefs file on startup, even though the code tried to avoid that. See golang/go#41122	4 years ago
David Anderson	68ddf134d7	wgengine/router/dns: issue ipconfig /registerdns when applying DNS settings. Amazingly, there doesn't seem to be a documented way of updating network configuration programmatically in a way that Windows takes notice of. The naturopathic remedy for this is to invoke ipconfig /registerdns, which does a variety of harmless things and also invokes the private API that tells windows to notice new adapter settings. This makes our DNS config changes stick within a few seconds of us setting them. If we're invoking a shell command anyway, why futz with the registry at all? Because netsh has no command for changing the DNS suffix list, and its commands for setting resolvers requires parsing its output and keeping track of which server is in what index. Amazingly, twiddling the registry directly is the less painful option. Fixes #853. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	508f5c3ae0	wgengine/router: fix bug where getInterfaceRoutes always returned an empty list Regression from `f2ce64f0c6 (r43710860)` Fixes #870	4 years ago
Brad Fitzpatrick	38bde61b3d	wgengine/router: make Windows firewall configuration async Updating the Windows firewall is usually reasonably fast, but sometimes blocks for 20 seconds, 4 minutes, etc. Not sure why. Until we understand that's happening, configure it in the background without blocking the normal control flow. Updates #785 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	ff0cf6340a	wgengine/router: fix configuration of loopback netfilter rules for v6. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Alex Brainman	f2ce64f0c6	wgengine/router: unfork winipcfg-go package, use upstream Use golang.zx2c4.com/wireguard/windows/tunnel/winipcfg instead of github.com/tailscale/winipcfg-go package. Updates #760 Signed-off-by: Alex Brainman <alex.brainman@gmail.com>	4 years ago
David Anderson	c493e5804f	wgengine/router: make v6-ness configurable in test, for consistent results. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	c86761cfd1	Remove tuntap references. We only use TUN.	4 years ago
Brad Fitzpatrick	bbb56f2303	wgengine/router: fix tests on Debian Buster as regular user on machine with IPv6	4 years ago
David Anderson	fddbcb0c7b	wgengine/router: support various degrees of broken IPv6. Gracefully skips touching the v6 NAT table on systems that don't have it, and doesn't configure IPv6 at all if IPv6 is globally disabled. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago

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125 Commits (81143b6d9aa8a2ea5d728617b7faf72217c5958a)