tailscale

Commit Graph

Author	SHA1	Message	Date
Rhea Ghosh	dc1c7cbe3e	taildrop: initial commit of taildrop functionality refactoring (#9676 ) Over time all taildrop functionality will be contained in the taildrop package. This will include end to end unit tests. This is simply the first smallest piece to move over. There is no functionality change in this commit. Updates tailscale/corp#14772 Signed-off-by: Rhea Ghosh <rhea@tailscale.com> Co-authored-by: Joseph Tsai <joetsai@tailscale.com>	1 year ago
Andrew Dunham	286c6ce27c	net/dns/resolver: race UDP and TCP queries (#9544 ) Instead of just falling back to making a TCP query to an upstream DNS server when the UDP query returns a truncated query, also start a TCP query in parallel with the UDP query after a given race timeout. This ensures that if the upstream DNS server does not reply over UDP (or if the response packet is blocked, or there's an error), we can still make queries if the server replies to TCP queries. This also adds a new package, util/race, to contain the logic required for racing two different functions and returning the first non-error answer. Updates tailscale/corp#14809 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I4311702016c1093b1beaa31b135da1def6d86316	1 year ago
Tom DNetto	656a77ab4e	net/packet: implement methods for rewriting v6 addresses Implements the ability for the address-rewriting code to support rewriting IPv6 addresses. Specifically, UpdateSrcAddr & UpdateDstAddr. Signed-off-by: Tom DNetto <tom@tailscale.com> Updates https://github.com/tailscale/corp/issues/11202	1 year ago
Claire Wang	a56e58c244	util/syspolicy: add read boolean setting (#9592 )	1 year ago
James Tucker	0c8c374a41	go.mod: bump all dependencies except go-billy go-billy is held back at v5.4.1 in order to avoid a newly introduced subdependency that is not compatible with plan9. Updates #8043 Signed-off-by: James Tucker <james@tailscale.com>	1 year ago
Andrea Barisani	b5b4298325	go.mod,*: bump gvisor Updates #9253 Signed-off-by: Andrea Barisani <andrea@inversepath.com> Signed-off-by: James Tucker <james@tailscale.com>	1 year ago
Brad Fitzpatrick	3d37328af6	wgengine, proxymap: split out port mapping from Engine to new type (Continuing quest to remove rando stuff from the "Engine") Updates #cleanup Change-Id: I77f39902c2194410c10c054b545d70c9744250b0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	db2f37d7c6	ipn/ipnlocal: add some test accessors Updates tailscale/corp#12990 Change-Id: I82801ac4c003d2c7e1352c514adb908dbf01be87 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	9203916a4a	control/controlknobs: move more controlknobs code from controlclient Updates #cleanup Change-Id: I2b8b6ac97589270f307bfb20e33674894ce873b5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	9a86aa5732	all: depend on zstd unconditionally, remove plumbing to make it optional All platforms use it at this point, including iOS which was the original hold out for memory reasons. No more reason to make it optional. Updates #9332 Change-Id: I743fbc2f370921a852fbcebf4eb9821e2bdd3086 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Marwan Sulaiman	51d3220153	ipn, ipn/ipnlocal: remove log streaming for StreamServe This PR removes the per request logging to the CLI as the CLI will not be displaying those logs initially. Updates #8489 Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>	1 year ago
Marwan Sulaiman	a4aa6507fa	ipn, ipn/ipnlocal: add session identifier for WatchIPNBus This PR adds a SessionID field to the ipn.Notify struct so that ipn buses can identify a session and register deferred clean up code in the future. The first use case this is for is to be able to tie foreground serve configs to a specific watch session and ensure its clean up when a connection is closed. Updates #8489 Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>	1 year ago
Brad Fitzpatrick	7175f06e62	util/rands: add package with HexString func We use it a number of places in different repos. Might as well make one. Another use is coming. Updates #cleanup Change-Id: Ib7ce38de0db35af998171edee81ca875102349a4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrew Lytvynov	4e72992900	clientupdate: add linux tarball updates (#9144 ) As a fallback to package managers, allow updating tailscale that was self-installed in some way. There are some tricky bits around updating the systemd unit (should we stick to local binary paths or to the ones in tailscaled.service?), so leaving that out for now. Updates #6995 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	1 year ago
Chris Palmer	ce1e02096a	ipn/ipnlocal: support most Linuxes in handleC2NUpdate (#9114 ) * ipn/ipnlocal: support most Linuxes in handleC2NUpdate Updates #6995 Signed-off-by: Chris Palmer <cpalmer@tailscale.com>	1 year ago
Brad Fitzpatrick	7053e19562	control/controlclient: delete Status.Log{in,out}Finished They were entirely redundant and 1:1 with the status field so this turns them into methods instead. Updates #cleanup Updates #1909 Change-Id: I7d939750749edf7dae4c97566bbeb99f2f75adbc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Aaron Klotz	5fb1695bcb	util/osdiag, util/osdiag/internal/wsc: add code to probe the Windows Security Center for installed software The Windows Security Center is a component that manages the registration of security products on a Windows system. Only products that have obtained a special cert from Microsoft may register themselves using the WSC API. Practically speaking, most vendors do in fact sign up for the program as it enhances their legitimacy. From our perspective, this is useful because it gives us a high-signal source of information to query for the security products installed on the system. I've tied this query into the osdiag package and is run during bugreports. It uses COM bindings that were automatically generated by my prototype metadata processor, however that program still has a few bugs, so I had to make a few manual tweaks. I dropped those binding into an internal package because (for the moment, at least) they are effectively purpose-built for the osdiag use case. We also update the wingoes dependency to pick up BSTR. Fixes #10646 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	1 year ago
Marwan Sulaiman	35ff5bf5a6	cmd/tailscale/cli, ipn/ipnlocal: [funnel] add stream mode Adds ability to start Funnel in the foreground and stream incoming connections. When foreground process is stopped, Funnel is turned back off for the port. Exampe usage: ``` TAILSCALE_FUNNEL_V2=on tailscale funnel 8080 ``` Updates #8489 Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>	1 year ago
Maisem Ali	8a5ec72c85	cmd/cloner: use maps.Clone and ptr.To Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Brad Fitzpatrick	e8551d6b40	all: use Go 1.21 slices, maps instead of x/exp/{slices,maps} Updates #8419 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	239ad57446	tailcfg: move LogHeapPprof from Debug to c2n [capver 69] And delete Debug.GoroutineDumpURL, which was already in c2n. Updates #8923 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrew Dunham	95d776bd8c	wgengine/magicsock: only cache N most recent endpoints per-Addr If a node is flapping or otherwise generating lots of STUN endpoints, we can end up caching a ton of useless values and sending them to peers. Instead, let's apply a fixed per-Addr limit of endpoints that we cache, so that we're only sending peers up to the N most recent. Updates tailscale/corp#13890 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I8079a05b44220c46da55016c0e5fc96dd2135ef8	1 year ago
Brad Fitzpatrick	a1b8d703d6	tstime/mono: remove unsafe This removes the unsafe/linkname and only uses the standard library. It's a bit slower, for now, but https://go.dev/cl/518336 should get us back. On darwin/arm64, without https://go.dev/cl/518336 pkg: tailscale.com/tstime/mono │ before │ after │ │ sec/op │ sec/op vs base │ MonoNow-8 16.20n ± 0% 19.75n ± 0% +21.92% (p=0.000 n=10) TimeNow-8 39.46n ± 0% 39.40n ± 0% -0.16% (p=0.002 n=10) geomean 25.28n 27.89n +10.33% And with it, MonoNow-8 16.34n ± 1% 16.93n ± 0% +3.67% (p=0.001 n=10) TimeNow-8 39.55n ± 15% 38.46n ± 1% -2.76% (p=0.000 n=10) geomean 25.42n 25.52n +0.41% Updates #8839 Updates tailscale/go#70 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Maisem Ali	682fd72f7b	util/testenv: add new package to hold InTest Removes duplicated code. Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Aaron Klotz	37925b3e7a	go.mod, cmd/tailscaled, ipn/localapi, util/osdiag, util/winutil, util/winutil/authenticode: add Windows module list to OS-specific logs that are written upon bugreport * We update wingoes to pick up new version information functionality (See pe/version.go in the https://github.com/dblohm7/wingoes repo); * We move the existing LogSupportInfo code (including necessary syscall stubs) out of util/winutil into a new package, util/osdiag, and implement the public LogSupportInfo function may be implemented for other platforms as needed; * We add a new reason argument to LogSupportInfo and wire that into localapi's bugreport implementation; * We add module information to the Windows implementation of LogSupportInfo when reason indicates a bugreport. We enumerate all loaded modules in our process, and for each one we gather debug, authenticode signature, and version information. Fixes #7802 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	1 year ago
Brad Fitzpatrick	88cc0ad9f7	util/linuxfw: remove yet-unused code to fix linux/arm64 crash The util/linuxfw/iptables.go had a bunch of code that wasn't yet used (in prep for future work) but because of its imports, ended up initializing code deep within gvisor that panicked on init on arm64 systems not using 4KB pages. This deletes the unused code to delete the imports and remove the panic. We can then cherry-pick this back to the branch and restore it later in a different way. A new test makes sure we don't regress in the future by depending on the panicking package in question. Fixes #8658 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrew Lytvynov	7a82fd8dbe	ipn/ipnlocal: add optional support for ACME Renewal Info (ARI) (#8599 )	1 year ago
Andrew Dunham	a7648a6723	net/dnsfallback: run recursive resolver and compare results When performing a fallback DNS query, run the recursive resolver in a separate goroutine and compare the results returned by the recursive resolver with the results we get from "regular" bootstrap DNS. This will allow us to gather data about whether the recursive DNS resolver works better, worse, or about the same as "regular" bootstrap DNS. Updates #5853 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ifa0b0cc9eeb0dccd6f7a3d91675fe44b3b34bd48	1 year ago
Maisem Ali	2e19790f61	types/views: add JSON marshal/unmarshal and AsMap to Map This allows cloning a Map as well as marshaling the Map as JSON. Updates tailscale/corp#12754 Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Andrew Dunham	ab310a7f60	derp: use new net/tcpinfo package Updates #8413 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I8bf8046517195a6d42cabb32d6ec7f1f79cef860	1 year ago
KevinLiang10	243ce6ccc1	util/linuxfw: decoupling IPTables logic from linux router This change is introducing new netfilterRunner interface and moving iptables manipulation to a lower leveled iptables runner. For #391 Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>	1 year ago
phirework	fbacc0bd39	go.toolchain: switch to tailscale.go1.21 (#8415 ) Updates #8419 Signed-off-by: Jenny Zhang <jz@tailscale.com>	1 year ago
Brad Fitzpatrick	67e912824a	all: adjust some build tags for wasi A start. Updates #8320 Change-Id: I64057f977be51ba63ce635c56d67de7ecec415d1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	eefee6f149	all: use cmpx.Or where it made sense I left a few out where writing it explicitly was better for various reasons. Updates #8296 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Joe Tsai	84c99fe0d9	logtail: be less aggressive about re-uploads (#8117 ) The retry logic was pathological in the following ways: * If we restarted the logging service, any pending uploads would be placed in a retry-loop where it depended on backoff.Backoff, which was too aggresive. It would retry failures within milliseconds, taking at least 10 retries to hit a delay of 1 second. * In the event where a logstream was rate limited, the aggressive retry logic would severely exacerbate the problem since each retry would also log an error message. It is by chance that the rate of log error spam does not happen to exceed the rate limit itself. We modify the retry logic in the following ways: * We now respect the "Retry-After" header sent by the logging service. * Lacking a "Retry-After" header, we retry after a hard-coded period of 30 to 60 seconds. This avoids the thundering-herd effect when all nodes try reconnecting to the logging service at the same time after a restart. * We do not treat a status 400 as having been uploaded. This is simply not the behavior of the logging service. Updates #tailscale/corp#11213 Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Brad Fitzpatrick	6e967446e4	tsd: add package with System type to unify subsystem init, discovery This is part of an effort to clean up tailscaled initialization between tailscaled, tailscaled Windows service, tsnet, and the mac GUI. Updates #8036 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	9e9ea6e974	go.mod: bump all deps possible that don't break the build This holds back gvisor, kubernetes, goreleaser, and esbuild, which all had breaking API changes. Updates #8043 Updates #7381 Updates #8042 (updates u-root which adds deps) Change-Id: I889759bea057cd3963037d41f608c99eb7466a5b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Charlotte Brandhorst-Satzkorn	ddb4040aa0	wgengine/magicsock: add address selection for wireguard only endpoints (#7979 ) This change introduces address selection for wireguard only endpoints. If a endpoint has not been used before, an address is randomly selected to be used based on information we know about, such as if they are able to use IPv4 or IPv6. When an address is initially selected, we also initiate a new ICMP ping to the endpoints addresses to determine which endpoint offers the best latency. This information is then used to update which endpoint we should be using based on the best possible route. If the latency is the same for a IPv4 and an IPv6 address, IPv6 will be used. Updates #7826 Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>	2 years ago
Mihai Parparita	4722f7e322	all: move network monitoring from wgengine/monitor to net/netmon We're using it in more and more places, and it's not really specific to our use of Wireguard (and does more just link/interface monitoring). Also removes the separate interface we had for it in sockstats -- it's a small enough package (we already pull in all of its dependencies via other paths) that it's not worth the extra complexity. Updates #7621 Updates #7850 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Anton Tolchanov	8546ff98fb	tsweb: move varz handler(s) into separate modules This splits Prometheus metric handlers exposed by tsweb into two modules: - `varz.Handler` exposes Prometheus metrics generated by our expvar converter; - `promvarz.Handler` combines our expvar-converted metrics and native Prometheus metrics. By default, tsweb will use the promvarz handler, however users can keep using only the expvar converter. Specifically, `tailscaled` now uses `varz.Handler` explicitly, which avoids a dependency on the (heavyweight) Prometheus client. Updates https://github.com/tailscale/corp/issues/10205 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	11e6247d2a	tsweb: expose native Prometheus metrics in /debug/varz The handler will expose built-in process and Go metrics by default, which currently duplicate some of the expvar-proxied metrics (`goroutines` vs `go_goroutines`, `memstats` vs `go_memstats`), but as long as their names are different, Prometheus server will just scrape both. This will change /debug/varz behaviour for most tsweb binaries, but notably not for control, which configures a `tsweb.VarzHandler` [explicitly](`a5b5d5167f/cmd/tailcontrol/tailcontrol.go (L779)`) Updates https://github.com/tailscale/corp/issues/10205 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Aaron Klotz	90fd04cbde	ipn/ipnlocal, util/winutil/policy: modify Windows profile migration to load legacy prefs from within tailscaled I realized that a lot of the problems that we're seeing around migration and LocalBackend state can be avoided if we drive Windows pref migration entirely from within tailscaled. By doing it this way, tailscaled can automatically perform the migration as soon as the connection with the client frontend is established. Since tailscaled is already running as LocalSystem, it already has access to the user's local AppData directory. The profile manager already knows which user is connected, so we simply need to resolve the user's prefs file and read it from there. Of course, to properly migrate this information we need to also check system policies. I moved a bunch of policy resolution code out of the GUI and into a new package in util/winutil/policy. Updates #7626 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	2 years ago
Andrew Dunham	8d3acc9235	util/sysresources, magicsock: scale DERP buffer based on system memory This adds the util/sysresources package, which currently only contains a function to return the total memory size of the current system. Then, we modify magicsock to scale the number of buffered DERP messages based on the system's available memory, ensuring that we never use a value lower than the previous constant of 32. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ib763c877de4d0d4ee88869078e7d512f6a3a148d	2 years ago
Andrew Dunham	38e4d303a2	net/tshttpproxy: don't proxy through ourselves When running a SOCKS or HTTP proxy, configure the tshttpproxy package to drop those addresses from any HTTP_PROXY or HTTPS_PROXY environment variables. Fixes #7407 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I6cd7cad7a609c639780484bad521c7514841764b	2 years ago
Maisem Ali	985535aebc	net/tstun,wgengine/*: add support for NAT to routes This adds support to make exit nodes and subnet routers work when in scenarios where NAT is required. It also updates the NATConfig to be generated from a `wgcfg.Config` as that handles merging prefs with the netmap, so it has the required information about whether an exit node is already configured and whether routes are accepted. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Andrew Dunham	c98652c333	doctor/permissions: add new check to print process permissions Since users can run tailscaled in a variety of ways (root, non-root, non-root with process capabilities on Linux), this check will print the current process permissions to the log to aid in debugging. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ida93a206123f98271a0c664775d0baba98b330c7	2 years ago
James Tucker	a31e43f760	go.mod: bump gvisor to 20230320 for dispatcher locking Upstream improved code around an issue showing up in CI, where sometimes shutdown will race on endpoint.dispatcher being nil'd, causing a panic down stack of injectInbound. The upstream patch makes some usage more safe, but it does not itself fix the local issue. See panic in https://github.com/tailscale/tailscale/actions/runs/4548299564/jobs/8019187385#step:7:843 See fix in google/gvisor@13d7bf69d8 Updates #7715 Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
valscale	74eb99aed1	derp, derphttp, magicsock: send new unknown peer frame when destination is unknown (#7552 ) * wgengine/magicsock: add envknob to send CallMeMaybe to non-existent peer For testing older client version responses to the PeerGone packet format change. Updates #4326 Signed-off-by: Val <valerie@tailscale.com> * derp: remove dead sclient struct member replaceLimiter Leftover from an previous solution to the duplicate client problem. Updates #2751 Signed-off-by: Val <valerie@tailscale.com> * derp, derp/derphttp, wgengine/magicsock: add new PeerGone message type Not Here Extend the PeerGone message type by adding a reason byte. Send a PeerGone "Not Here" message when an endpoint sends a disco message to a peer that this server has no record of. Fixes #4326 Signed-off-by: Val <valerie@tailscale.com> --------- Signed-off-by: Val <valerie@tailscale.com>	2 years ago
Maisem Ali	8a11f76a0d	ipn/ipnlocal: fix cert storage in Kubernetes We were checking against the wrong directory, instead if we have a custom store configured just use that. Fixes #7588 Fixes #7665 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Will Norris	a1d9f65354	ipn,log: add logger for sockstat deltas Signed-off-by: Will Norris <will@tailscale.com> Co-authored-by: Melanie Warrick <warrick@tailscale.com>	2 years ago
Maisem Ali	be027a9899	control/controlclient: improve handling of concurrent lite map requests This reverts commit `6eca47b16c` and fixes forward. Previously the first ever streaming MapRequest that a client sent would also set ReadOnly to true as it didn't have any endpoints and expected/relied on the map poll to restart as soon as it got endpoints. However with `48f6c1eba4`, we would no longer restart MapRequests as frequently as we used to, so control would only ever get the first streaming MapRequest which had ReadOnly=true. Control would treat this as an uninteresting request and would not send it any further netmaps, while the client would happily stay in the map poll forever while litemap updates happened in parallel. This makes it so that we never set `ReadOnly=true` when we are doing a streaming MapRequest. This is no longer necessary either as most endpoint discovery happens over disco anyway. Co-authored-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Andrew Dunham	be107f92d3	wgengine/magicsock: track per-endpoint changes in ringbuffer This change adds a ringbuffer to each magicsock endpoint that keeps a fixed set of "changes"–debug information about what updates have been made to that endpoint. Additionally, this adds a LocalAPI endpoint and associated "debug peer-status" CLI subcommand to fetch the set of changes for a given IP or hostname. Updates tailscale/corp#9364 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I34f726a71bddd0dfa36ec05ebafffb24f6e0516a	2 years ago
Andrew Dunham	73fa7dd7af	util/slicesx: add package for generic slice functions, use Now that we're using rand.Shuffle in a few locations, create a generic shuffle function and use it instead. While we're at it, move the interleaveSlices function to the same package for use. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I0b00920e5b3eea846b6cedc30bd34d978a049fd3	2 years ago
Mihai Parparita	9cb332f0e2	sockstats: instrument networking code paths Uses the hooks added by tailscale/go#45 to instrument the reads and writes on the major code paths that do network I/O in the client. The convention is to use "<package>.<type>:<label>" as the annotation for the responsible code path. Enabled on iOS, macOS and Android only, since mobile platforms are the ones we're most interested in, and we are less sensitive to any throughput degradation due to the per-I/O callback overhead (macOS is also enabled for ease of testing during development). For now just exposed as counters on a /v0/sockstats PeerAPI endpoint. We also keep track of the current interface so that we can break out the stats by interface. Updates tailscale/corp#9230 Updates #3363 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Joe Tsai	0d19f5d421	all: replace logtail.{Public,Private}ID with logid.{Public,Private}ID (#7404 ) The log ID types were moved to a separate package so that code that only depend on log ID types do not need to link in the logic for the logtail client itself. Not all code need the logtail client. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
David Anderson	70a2929a12	version: make all exported funcs compile-time constant or lazy Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
Tom DNetto	99b9d7a621	all: implement pcap streaming for datapath debugging Updates: tailscale/corp#8470 Signed-off-by: Tom DNetto <tom@tailscale.com>	2 years ago
Brad Fitzpatrick	03645f0c27	net/{netns,netstat}: use new x/sys/cpu.IsBigEndian See golang/go#57237 Change-Id: If47ab6de7c1610998a5808e945c4177c561eab45 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	b1248442c3	all: update to Go 1.20, use strings.CutPrefix/Suffix instead of our fork Updates #7123 Updates #5309 Change-Id: I90bcd87a2fb85a91834a0dd4be6e03db08438672 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Will Norris	51e1ab5560	fixup! util/vizerror: add new package for visible errors Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Brad Fitzpatrick	a1b4ab34e6	util/httpm: add new package for prettier HTTP method constants See package doc. Change-Id: Ibbfc8e1f98294217c56f3a9452bd93ffa3103572 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	6793685bba	go.mod: bump AWS SDK past a breaking API change of theirs They changed a type in their SDK which meant others using the AWS APIs in their Go programs (with newer AWS modules in their caller go.mod) and then depending on Tailscale (for e.g. tsnet) then couldn't compile ipn/store/awsstore. Thanks to @thisisaaronland for bringing this up. Fixes #7019 Change-Id: I8d2919183dabd6045a96120bb52940a9bb27193b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Tom DNetto	673b3d8dbd	net/dns,userspace: remove unused DNS paths, normalize query limit on iOS With `a42a594bb3`, iOS uses netstack and hence there are no longer any platforms which use the legacy MagicDNS path. As such, we remove it. We also normalize the limit for max in-flight DNS queries on iOS (it was 64, now its 256 as per other platforms). It was 64 for the sake of being cautious about memory, but now we have 50Mb (iOS-15 and greater) instead of 15Mb so we have the spare headroom. Signed-off-by: Tom DNetto <tom@tailscale.com>	2 years ago
andig	14e8afe444	go.mod, etc: bump gvisor Fixes #6554 Change-Id: Ia04ae37a47b67fa57091c9bfe1d45a1842589aa8 Signed-off-by: andig <cpuidle@gmx.de>	2 years ago
Jordan Whited	914d115f65	go.mod: bump tailscale/wireguard-go for big-endian fix (#6785 ) Signed-off-by: Jordan Whited <jordan@tailscale.com>	2 years ago
Brad Fitzpatrick	c02ccf6424	go.mod: bump dhcp dep to remove another endian package from our tree To pull in insomniacslk/dhcp#484 to pull in u-root/uio#8 Updates golang/go#57237 Change-Id: I1e56656e0dc9ec0b870f799fe3bc18b3caac1ee4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	ca08e316af	util/endian: delete package; use updated josharian/native instead See josharian/native#3 Updates golang/go#57237 Change-Id: I238c04c6654e5b9e7d9cfb81a7bbc5e1043a84a2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Jordan Whited	ea5ee6f87c	all: update golang.zx2c4.com/wireguard to github.com/tailscale/wireguard-go (#6692 ) This is temporary while we work to upstream performance work in https://github.com/WireGuard/wireguard-go/pull/64. A replace directive is less ideal as it breaks dependent code without duplication of the directive. Signed-off-by: Jordan Whited <jordan@tailscale.com>	2 years ago
Jordan Whited	76389d8baf	net/tstun, wgengine/magicsock: enable vectorized I/O on Linux (#6663 ) This commit updates the wireguard-go dependency and implements the necessary changes to the tun.Device and conn.Bind implementations to support passing vectors of packets in tailscaled. This significantly improves throughput performance on Linux. Updates #414 Signed-off-by: Jordan Whited <jordan@tailscale.com> Signed-off-by: James Tucker <james@tailscale.com> Co-authored-by: James Tucker <james@tailscale.com>	2 years ago
Aaron Klotz	98f21354c6	cmd/tailscaled: add a special command to tailscaled's Windows service for removing WinTun WinTun is installed lazily by tailscaled while it is running as LocalSystem. Based upon what we're seeing in bug reports and support requests, removing WinTun as a lesser user may fail under certain Windows versions, even when that user is an Administrator. By adding a user-defined command code to tailscaled, we can ask the service to do the removal on our behalf while it is still running as LocalSystem. * The uninstall code is basically the same as it is in corp; * The command code will be sent as a service control request and is protected by the SERVICE_USER_DEFINED_CONTROL access right, which requires Administrator. I'll be adding follow-up patches in corp to engage this functionality. Updates https://github.com/tailscale/tailscale/issues/6433 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	2 years ago
Andrew Dunham	a887ca7efe	ipn/ipnlocal: improve redactErr to handle more cases This handles the case where the inner os.PathError is wrapped in another error type, and additionally will redact errors of type os.LinkError. Finally, add tests to verify that redaction works. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ie83424ff6c85cdb29fb48b641330c495107aab7c	2 years ago
Brad Fitzpatrick	197a4f1ae8	types/ptr: move all the ptrTo funcs to one new package's ptr.To Change-Id: Ia0b820ffe7aa72897515f19bd415204b6fe743c7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	adc302f428	all: use named pipes on windows Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Joe Tsai	2e5d08ec4f	net/connstats: invert network logging data flow (#6272 ) Previously, tstun.Wrapper and magicsock.Conn managed their own statistics data structure and relied on an external call to Extract to extract (and reset) the statistics. This makes it difficult to ensure a maximum size on the statistics as the caller has no introspection into whether the number of unique connections is getting too large. Invert the control flow such that a connstats.Statistics is registered with tstun.Wrapper and magicsock.Conn. Methods on non-nil connstats.Statistics are called for every packet. This allows the implementation of connstats.Statistics (in the future) to better control when it needs to flush to ensure bounds on maximum sizes. The value registered into tstun.Wrapper and magicsock.Conn could be an interface, but that has two performance detriments: 1. Method calls on interface values are more expensive since they must go through a virtual method dispatch. 2. The implementation would need a sync.Mutex to protect the statistics value instead of using an atomic.Pointer. Given that methods on constats.Statistics are called for every packet, we want reduce the CPU cost on this hot path. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Joe Tsai	35c10373b5	types/logid: move logtail ID types here (#6336 ) Many packages reference the logtail ID types, but unfortunately pull in the transitive dependencies of logtail. Fix this problem by putting the log ID types in its own package with minimal dependencies. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Brad Fitzpatrick	ea25ef8236	util/set: add new set package for SetHandle type We use this pattern in a number of places (in this repo and elsewhere) and I was about to add a fourth to this repo which was crossing the line. Add this type instead so they're all the same. Also, we have another Set type (SliceSet, which tracks its keys in order) in another repo we can move to this package later. Change-Id: Ibbdcdba5443fae9b6956f63990bdb9e9443cefa9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	e8cc78b1af	ipn/ipnserver: change Server to let LocalBackend be supplied async This is step 1 of de-special-casing of Windows and letting the LocalAPI HTTP server start serving immediately, even while the rest of the world (notably the Engine and its TUN device) are being created, which can take a few to dozens of seconds on Windows. With this change, the ipnserver.New function changes to not take an Engine and to return immediately, not returning an error, and let its Run run immediately. If its ServeHTTP is called when it doesn't yet have a LocalBackend, it returns an error. A TODO in there shows where a future handler will serve status before an engine is available. Future changes will: * delete a bunch of tailscaled_windows.go code and use this new API * add the ipnserver.Server ServerHTTP handler to await the engine being available * use that handler in the Windows GUI client Updates #6522 Change-Id: Iae94e68c235e850b112a72ea24ad0e0959b568ee Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	f45106d47c	ipn/ipnserver: move Windows-specific code to tailscaled_windows.go We'll eventually remove it entirely, but for now move get it out of ipnserver where it's distracting and move it to its sole caller. Updates #6522 Change-Id: I9c6f6a91bf9a8e3c5ea997952b7c08c81723d447 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	f3ba268a96	ipn/ipnserver: move BabysitProc to tailscaled_windows.go It's only used by Windows. No need for it to be in ipn/ipnserver, which we're trying to trim down. Change-Id: Idf923ac8b6cdae8b5338ec26c16fb8b5ea548071 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	0a842f353c	ipn/ipnserver: move more connection acceptance logic to LocalBackend Follow-up to #6467 and #6506. LocalBackend knows the server-mode state, so move more auth checking there, removing some bookkeeping from ipnserver.Server. Updates #6417 Updates tailscale/corp#8051 Change-Id: Ic5d14a077bf0dccc92a3621bd2646bab2cc5b837 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Aaron Klotz	033bd94d4c	cmd/tailscaled, wgengine/router: use wingoes/com for COM initialization instead of go-ole This patch removes the crappy, half-backed COM initialization used by `go-ole` and replaces that with the `StartRuntime` function from `wingoes`, a library I have started which, among other things, initializes COM properly. In particular, we should always be initializing COM to use the multithreaded apartment. Every single OS thread in the process becomes implicitly initialized as part of the MTA, so we do not need to concern ourselves as to whether or not any particular OS thread has initialized COM. Furthermore, we no longer need to lock the OS thread when calling methods on COM interfaces. Single-threaded apartments are designed solely for working with Win32 threads that have a message pump; any other use of the STA is invalid. Fixes https://github.com/tailscale/tailscale/issues/3137 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	2 years ago
Brad Fitzpatrick	7bff7345cc	ipn/ipnauth: start splitting ipnserver into new ipnauth package We're trying to gut 90% of the ipnserver package. A lot will get deleted, some will move to LocalBackend, and a lot is being moved into this new ipn/ipnauth package which will be leaf-y and testable. This is a baby step towards moving some stuff to ipnauth. Update #6417 Updates tailscale/corp#8051 Change-Id: I28bc2126764f46597d92a2d72565009dc6927ee0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	001f482aca	net/dns: make "direct" mode on Linux warn on resolv.conf fights Run an inotify goroutine and watch if another program takes over /etc/inotify.conf. Log if so. For now this only logs. In the future I want to wire it up into the health system to warn (visible in "tailscale status", etc) about the situation, with a short URL to more info about how you should really be using systemd-resolved if you want programs to not fight over your DNS files on Linux. Updates #4254 etc etc Change-Id: I86ad9125717d266d0e3822d4d847d88da6a0daaa Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	08e110ebc5	cmd/tailscale: make "up", "status" warn if routes and --accept-routes off Example output: # Health check: # - Some peers are advertising routes but --accept-routes is false Also, move "tailscale status" health checks to the bottom, where they won't be lost in large netmaps. Updates #2053 Updates #6266 Change-Id: I5ae76a0cd69a452ce70063875cd7d974bfeb8f1a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	2daf0f146c	ipn/ipnlocal, wgengine/netstack: start handling ports for future serving Updates tailscale/corp#7515 Change-Id: I966e936e72a2ee99be8d0f5f16872b48cc150258 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	6d8320a6e9	ipn/{ipnlocal,localapi}: move most of cert.go to ipnlocal Leave only the HTTP/auth bits in localapi. Change-Id: I8e23fb417367f1e0e31483e2982c343ca74086ab Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	db2cc393af	util/dirwalk, metrics, portlist: add new package for fast directory walking This is similar to the golang.org/x/tools/internal/fastwalk I'd previously written but not recursive and using mem.RO. The metrics package already had some Linux-specific directory reading code in it. Move that out to a new general package that can be reused by portlist too, which helps its scanning of all /proc files: name old time/op new time/op delta FindProcessNames-8 2.79ms ± 6% 2.45ms ± 7% -12.11% (p=0.000 n=10+10) name old alloc/op new alloc/op delta FindProcessNames-8 62.9kB ± 0% 33.5kB ± 0% -46.76% (p=0.000 n=9+10) name old allocs/op new allocs/op delta FindProcessNames-8 2.25k ± 0% 0.38k ± 0% -82.98% (p=0.000 n=9+10) Change-Id: I75db393032c328f12d95c39f71c9742c375f207a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	f4ff26f577	types/pad32: delete package Use Go 1.19's new 64-bit alignment ~hidden feature instead. Fixes #5356 Change-Id: Ifcbcb115875a7da01df3bc29e9e7feadce5bc956 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Joe Tsai	c21a3c4733	types/netlogtype: new package for network logging types (#6092 ) The netlog.Message type is useful to depend on from other packages, but doing so would transitively cause gvisor and other large packages to be linked in. Avoid this problem by moving all network logging types to a single package. We also update staticcheck to take in: `003d277bcf` Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Brad Fitzpatrick	35bee36549	portlist: use win32 calls instead of running netstat process [windows] Turns out using win32 instead of shelling out to child processes is a bit faster: name old time/op new time/op delta GetListIncremental-4 278ms ± 2% 0ms ± 7% -99.93% (p=0.000 n=8+10) name old alloc/op new alloc/op delta GetListIncremental-4 238kB ± 0% 9kB ± 0% -96.12% (p=0.000 n=10+8) name old allocs/op new allocs/op delta GetListIncremental-4 1.19k ± 0% 0.02k ± 0% -98.49% (p=0.000 n=10+10) Fixes #3876 (sadly) Change-Id: I1195ac5de21a8a8b3cdace5871d263e81aa27e91 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	3697609aaa	portlist: remove unix.Readlink allocs on Linux name old time/op new time/op delta GetList-8 11.2ms ± 5% 11.1ms ± 3% ~ (p=0.661 n=10+9) name old alloc/op new alloc/op delta GetList-8 83.3kB ± 1% 67.4kB ± 1% -19.05% (p=0.000 n=10+10) name old allocs/op new allocs/op delta GetList-8 2.89k ± 2% 2.19k ± 1% -24.24% (p=0.000 n=10+10) (real issue is we're calling this code as much as we are, but easy enough to make it efficient because it'll still need to be called sometimes in any case) Updates #5958 Change-Id: I90c20278d73e80315a840aed1397d24faa308d93 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Mihai Parparita	9d04ffc782	net/wsconn: add back custom wrapper for turning a websocket.Conn into a net.Conn We removed it in #4806 in favor of the built-in functionality from the nhooyr.io/websocket package. However, it has an issue with deadlines that has not been fixed yet (see nhooyr/websocket#350). Temporarily go back to using a custom wrapper (using the fix from our fork) so that derpers will stop closing connections too aggressively. Updates #5921 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Joe Tsai	f9120eee57	wgengine: start network logger in Userspace.Reconfig (#5908 ) If the wgcfg.Config is specified with network logging arguments, then Userspace.Reconfig starts up an asynchronous network logger, which is shutdown either upon Userspace.Close or when Userspace.Reconfig is called again without network logging or route arguments. 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
Andrew Dunham	e5636997c5	wgengine: don't re-allocate trimmedNodes map (#5825 ) Change-Id: I512945b662ba952c47309d3bf8a1b243e05a4736 Signed-off-by: Andrew Dunham <andrew@tailscale.com>	2 years ago
Aaron Klotz	44f13d32d7	cmd/tailscaled, util/winutil: log Windows service diagnostics when the wintun device fails to install I added new functions to winutil to obtain the state of a service and all its depedencies, serialize them to JSON, and write them to a Logf. When tstun.New returns a wrapped ERROR_DEVICE_NOT_AVAILABLE, we know that wintun installation failed. We then log the service graph rooted at "NetSetupSvc". We are interested in that specific service because network devices will not install if that service is not running. Updates https://github.com/tailscale/tailscale/issues/5531 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	2 years ago
Brad Fitzpatrick	9bdf0cd8cd	ipn/ipnlocal: add c2n /debug/{goroutines,prefs,metrics} * and move goroutine scrubbing code to its own package for reuse * bump capver to 45 Change-Id: I9b4dfa5af44d2ecada6cc044cd1b5674ee427575 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.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
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	c72caa6672	wgengine/magicsock: use AF_PACKET socket + BPF to read disco messages This is entirely optional (i.e. failing in this code is non-fatal) and only enabled on Linux for now. Additionally, this new behaviour can be disabled by setting the TS_DEBUG_DISABLE_AF_PACKET environment variable. Updates #3824 Replaces #5474 Co-authored-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago

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