tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	dc7aa98b76	all: use set.Set consistently instead of map[T]struct{} I didn't clean up the more idiomatic map[T]bool with true values, at least yet. I just converted the relatively awkward struct{}-valued maps. Updates #cleanup Change-Id: I758abebd2bb1f64bc7a9d0f25c32298f4679c14f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
David Anderson	95082a8dde	util/lru, util/limiter: add debug helper to dump state as HTML For use in tsweb debug handlers, so that we can easily inspect cache and limiter state when troubleshooting. Updates tailscale/corp#3601 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
Craig Rodrigues	8452d273e3	util/linuxfw: Fix comment which lists supported linux arches Only arm64 and amd64 are supported Signed-off-by: Craig Rodrigues <rodrigc@crodrigues.org>	1 year ago
David Anderson	0909e90890	util/lru: replace container/list with a custom ring implementation pre-generics container/list is quite unpleasant to use, and the pointer manipulation operations for an LRU are simple enough to implement directly now that we have generic types. With this change, the LRU uses a ring (aka circularly linked list) rather than a simple doubly-linked list as its internals, because the ring makes list manipulation edge cases more regular: the only remaining edge case is the transition between 0 and 1 elements, rather than also having to deal specially with manipulating the first and last members of the list. While the primary purpose was improved readability of the code, as it turns out removing the indirection through an interface box also speeds up the LRU: │ before.txt │ after.txt │ │ sec/op │ sec/op vs base │ LRU-32 67.05n ± 2% 59.73n ± 2% -10.90% (p=0.000 n=20) │ before.txt │ after.txt │ │ B/op │ B/op vs base │ LRU-32 21.00 ± 0% 10.00 ± 0% -52.38% (p=0.000 n=20) │ before.txt │ after.txt │ │ allocs/op │ allocs/op vs base │ LRU-32 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=20) ¹ Updates #cleanup Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	472eb6f6f5	util/lru: add a microbenchmark The benchmark simulates an LRU being queries with uniformly random inputs, in a set that's too large for the LRU, which should stress the eviction codepath. Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	96c2cd2ada	util/limiter: add a keyed token bucket rate limiter Updates tailscale/corp#3601 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
Anton Tolchanov	86b0fc5295	util/cmpver: add a few tests covering different OS versions Updates tailscale/corp#14491 Signed-off-by: Anton Tolchanov <anton@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
Craig Rodrigues	8683ce78c2	client/web, clientupdate, util/linuxfw, wgengine/magicsock: Use %v verb for errors Replace %w verb with %v verb when logging errors. Use %w only for wrapping errors with fmt.Errorf() Fixes: #9213 Signed-off-by: Craig Rodrigues <rodrigc@crodrigues.org>	1 year ago
Maisem Ali	306b85b9a3	cmd/k8s-operator: add metrics to track usage Updates #502 Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Brad Fitzpatrick	4af22f3785	util/deephash: add IncludeFields, ExcludeFields HasherForType Options Updates tailscale/corp#6198 Change-Id: Iafc18c5b947522cf07a42a56f35c0319cc7b1c94 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Aaron Klotz	6b6a8cf843	util/osdiag: add query for Windows page file configuration and status It's very common for OOM crashes on Windows to be caused by lack of page file space (the NT kernel does not overcommit). Since Windows automatically manages page file space by default, unless the machine is out of disk space, this is typically caused by manual page file configurations that are too small. This patch obtains the current page file size, the amount of free page file space, and also determines whether the page file is automatically or manually managed. Fixes #9090 Signed-off-by: Aaron Klotz <aaron@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
Aaron Klotz	ea693eacb6	util/winutil: add RegisterForRestart, allowing programs to indicate their preferences to the Windows restart manager In order for the installer to restart the GUI correctly post-upgrade, we need the GUI to be able to register its restart preferences. This PR adds API support for doing so. I'm adding it to OSS so that it is available should we need to do any such registrations on OSS binaries in the future. Updates https://github.com/tailscale/corp/issues/13998 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	1 year ago
Brad Fitzpatrick	1b223566dd	util/linuxfw: fix typo in unexported doc comment And flesh it out and use idiomatic doc style ("whether" for bools) and end in a period while there anyway. Updates #cleanup Change-Id: Ieb82f13969656e2340c3510e7b102dc8e6932611 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	f35ff84ee2	util/deephash: relax an annoyingly needy test I'd added a test case of deephash against a tailcfg.Node to make sure it worked at all more than anything. We don't care what the exact bytes are in this test, just that it doesn't fail. So adjust for that. Then when we make changes to tailcfg.Node and types under it, we don't need to keep adjusting this test. Updates #cleanup Change-Id: Ibf4fa42820aeab8f5292fe65f9f92ffdb0b4407b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
KevinLiang10	b040094b90	util/linuxfw: reorganize nftables rules to allow it to work with ufw This commit tries to mimic the way iptables-nft work with the filewall rules. We follow the convention of using tables like filter, nat and the conventional chains, to make our nftables implementation work with ufw. Updates: #391 Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>	1 year ago
Brad Fitzpatrick	bc0eb6b914	all: import x/exp/maps as xmaps to distinguish from Go 1.21 "maps" Updates #8419 Signed-off-by: Brad Fitzpatrick <bradfitz@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
Aaron Klotz	c17a817769	util/osdiag: add logging for winsock layered service providers to Windows bugreports The Layered Service Provider (LSP) is a deprecated (but still supported) mechanism for inserting user-mode DLLs into a filter chain between the Winsock API surface (ie, ws2_32.dll) and the internal user-mode interface to the networking stack. While their use is becoming more rare due to the aforementioned deprecation, it is still possible for third-party software to install their DLLs into this filter chain and interfere with Winsock API calls. Knowing whether this is happening is useful for troubleshooting. Fixes https://github.com/tailscale/tailscale/issues/8142 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	1 year ago
Aaron Klotz	b07347640c	util/winutil/authenticode: add missing docs for CertSubjectError A #cleanup PR. Signed-off-by: Aaron Klotz <aaron@tailscale.com>	1 year ago
Brad Fitzpatrick	7a5263e6d0	util/linuxfw: rename ErrorFWModeNotSupported Go style is for error variables to start with "err" (or "Err") and for error types to end in "Error". Updates #cleanup Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Aaron Klotz	3d2e35c053	util/winutil/authenticode: fix an inaccurate doc comment A #cleanup PR Signed-off-by: Aaron Klotz <aaron@tailscale.com>	1 year ago
Brad Fitzpatrick	66f27c4beb	all: require Go 1.21 Updates #8419 Change-Id: I809b6a4d59d92a2ab6ec587ccbb9053376bf02c2 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
KevinLiang10	ae63c51ff1	wgengine/router: add auto selection heuristic for iptables/nftables This commit replaces the TS_DEBUG_USE_NETLINK_NFTABLES envknob with a TS_DEBUG_FIREWALL_MODE that should be set to either 'iptables' or 'nftables' to select firewall mode manually, other wise tailscaled will automatically choose between iptables and nftables depending on environment and system availability. updates: #319 Signed-off-by: KevinLiang10 <kevinliang@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
Aaron Klotz	7adf15f90e	cmd/tailscale/cli, util/winutil/authenticode: flesh out authenticode support Previously, tailscale upgrade was doing the bare minimum for checking authenticode signatures via `WinVerifyTrustEx`. This is fine, but we can do better: * WinVerifyTrustEx verifies that the binary's signature is valid, but it doesn't determine whose signature is valid; tailscale upgrade should also ensure that the binary is actually signed by us. * I added the ability to check the signatures of MSI files. * In future PRs I will be adding diagnostic logging that lists details about every module (ie, DLL) loaded into our process. As part of that metadata, I want to be able to extract information about who signed the binaries. This code is modelled on some C++ I wrote for Firefox back in the day. See https://searchfox.org/mozilla-central/rev/27e4816536c891d85d63695025f2549fd7976392/toolkit/xre/dllservices/mozglue/Authenticode.cpp for reference. Fixes #8284 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	1 year ago
David Anderson	52212f4323	all: update exp/slices and fix call sites slices.SortFunc suffered a late-in-cycle API breakage. Updates #cleanup Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
Maisem Ali	1ecc16da5f	tailcfg,ipn/ipnlocal,wgengine: add values to PeerCapabilities Define PeerCapabilty and PeerCapMap as the new way of sending down inter-peer capability information. Previously, this was unstructured and you could only send down strings which got too limiting for certain usecases. Instead add the ability to send down raw JSON messages that are opaque to Tailscale but provide the applications to define them however they wish. Also update accessors to use the new values. Updates #4217 Signed-off-by: Maisem Ali <maisem@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
KevinLiang10	a3c7b21cd1	util/linuxfw: add nftables support This commit adds nftable rule injection for tailscaled. If tailscaled is started with envknob TS_DEBUG_USE_NETLINK_NFTABLES = true, the router will use nftables to manage firewall rules. Updates: #391 Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>	1 year ago
Brad Fitzpatrick	7b1c3dfd28	tailcfg,etc: remove unused tailcfg.Node.KeepAlive field The server hasn't sent it in ages. Updates #cleanup Change-Id: I9695ab0f074ec6fb006e11faf3cdfc5ca049fbf8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
KevinLiang10	6ebd87c669	util/linuxfw: add new arch build constraints Exclide GOARCHs including: mips, mips64, mips64le, mipsle, riscv64. These archs are not supported by gvisor.dev/gvisor/pkg/hostarch. Fixes: #391 Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>	1 year ago
Brad Fitzpatrick	b0a984dc26	util/lru: add a package for a typed LRU cache Updates tailscale/corp#7355 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	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
Maisem Ali	c11af12a49	.github: actually run tests in CI Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Brad Fitzpatrick	7c1068b7ac	util/goroutines: let ScrubbedGoroutineDump get only current stack ScrubbedGoroutineDump previously only returned the stacks of all goroutines. I also want to be able to use this for only the current goroutine's stack. Add a bool param to support both ways. Updates tailscale/corp#5149 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrew Dunham	62130e6b68	util/slicesx: add Partition function Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: If97995ca9ee9fad40f327420dcb1857dd7ea2315	2 years 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>	2 years ago
Brad Fitzpatrick	12f8c98823	util/cmpx: add package with cmp-like things from future Go releases Updates #8296 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Aaron Klotz	2aa8299c37	cmd/tailscaled, util/winutil: log our registry keys during tailscaled startup In order to improve our ability to understand the state of policies and registry settings when troubleshooting, we enumerate all values in all subkeys. x/sys/windows does not already offer this, so we need to call RegEnumValue directly. For now we're just logging this during startup, however in a future PR I plan to also trigger this code during a bugreport. I also want to log more than just registry. Fixes #8141 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	2 years ago
Brad Fitzpatrick	b69059334b	util/set: add a basic map-based Set type We have two other types of Sets here. Add the basic obvious one too. Needed for a change elsewhere. Updates #cleanup Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	4f454f4122	util/codegen: support embedded fields I noticed cmd/{cloner,viewer} didn't support structs with embedded fields while working on a change in another repo. This adds support. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Andrew Dunham	280255acae	various: add golangci-lint, fix issues (#7905 ) This adds an initial and intentionally minimal configuration for golang-ci, fixes the issues reported, and adds a GitHub Action to check new pull requests against this linter configuration. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I8f38fbc315836a19a094d0d3e986758b9313f163	2 years ago
Andrew Dunham	f352f8a0e6	util/set: move Slice type from corp to oss This is an exact copy of the files misc/set/set{,_test}.go from tailscale/corp@a5415daa9c, plus the license headers. For use in #7877 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I712d09c6d1a180c6633abe3acf8feb59b27e2866	2 years ago
Maisem Ali	64bbf1738e	tailcfg: make SelfNodeV4MasqAddrForThisPeer a pointer This makes `omitempty` actually work, and saves bytes in each map response. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Charlotte Brandhorst-Satzkorn	c573bef0aa	tailcfg,wgengine: add initial support for WireGuard only peers A peer can have IsWireGuardOnly, which means it will not support DERP or Disco, and it must have Endpoints filled in order to be usable. In the present implementation only the first Endpoint will be used as the bestAddr. Updates tailscale/corp#10351 Co-authored-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com> Co-authored-by: James Tucker <james@tailscale.com> Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
Mihai Parparita	f49b9f75b8	util/clientmetric: allow client metric values to be provided by a function Adds NewGaugeFunc and NewCounterFunc (inspired by expvar.Func) which change the current value to be reported by a function. This allows some client metric values to be computed on-demand during uploading (at most every 15 seconds), instead of being continuously updated. clientmetric uploading had a bunch of micro-optimizations for memory access (#3331) which are not possible with this approach. However, any performance hit from function-based metrics is contained to those metrics only, and we expect to have very few. Also adds a DisableDeltas() option for client metrics, so that absolute values are always reported. This makes server-side processing of some metrics easier to reason about. Updates tailscale/corp#9230 Signed-off-by: Mihai Parparita <mihai@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

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247 Commits (f3a5bfb1b9a0b4c5c352ce4e1732b1fdcab3a8d1)