tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	575feb486f	util/osuser: turn wasm check into a const expression All wasi* are GOARCH wasm, so check that instead. Updates #12732 Change-Id: Id3cc346295c1641bcf80a6c5eb1ad65488509656 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Ross Williams	1bf82ddf84	util/osuser: run getent on non-Linux Unixes Remove the restriction that getent is skipped on non-Linux unixes. Improve validation of the parsed output from getent, in case unknown systems return unusable information. Fixes #12730. Signed-off-by: Ross Williams <ross@ross-williams.net>	4 months ago
Nick Khyl	d500a92926	util/slicesx: add HasPrefix, HasSuffix, CutPrefix, and CutSuffix functions The standard library includes these for strings and byte slices, but it lacks similar functions for generic slices of comparable types. Although they are not as commonly used, these functions are useful in scenarios such as working with field index sequences (i.e., []int) via reflection. Updates #12687 Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 months ago
Nick Khyl	20562a4fb9	cmd/viewer, types/views, util/codegen: add viewer support for custom container types This adds support for container-like types such as Container[T] that don't explicitly specify a view type for T. Instead, a package implementing a container type should also implement and export a ContainerView[T, V] type and a ContainerViewOf(*Container[T]) ContainerView[T, V] function, which returns a view for the specified container, inferring the element view type V from the element type T. Updates #12736 Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 months ago
Nick Khyl	fc28c8e7f3	cmd/cloner, cmd/viewer, util/codegen: add support for generic types and interfaces This adds support for generic types and interfaces to our cloner and viewer codegens. It updates these packages to determine whether to make shallow or deep copies based on the type parameter constraints. Additionally, if a template parameter or an interface type has View() and Clone() methods, we'll use them for getters and the cloner of the owning structure. Updates #12736 Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 months ago
Brad Fitzpatrick	c6af5bbfe8	all: add test for package comments, fix, add comments as needed Updates #cleanup Change-Id: Ic4304e909d2131a95a38b26911f49e7b1729aaef Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Nick Khyl	8bd442ba8c	util/winutil/gp, net/dns: add package for Group Policy API This adds a package with GP-related functions and types to be used in the future PRs. It also updates nrptRuleDatabase to use the new package instead of its own gpNotificationWatcher implementation. Updates #12687 Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 months ago
Aaron Klotz	e181f12a7b	util/winutil/s4u: fix some doc comments in the s4u package This is #cleanup Signed-off-by: Aaron Klotz <aaron@tailscale.com>	4 months ago
Tom Proctor	01a7726cf7	cmd/containerboot,cmd/k8s-operator: enable IPv6 for fqdn egress proxies (#12577 ) cmd/containerboot,cmd/k8s-operator: enable IPv6 for fqdn egress proxies Don't skip installing egress forwarding rules for IPv6 (as long as the host supports IPv6), and set headless services `ipFamilyPolicy` to `PreferDualStack` to optionally enable both IP families when possible. Note that even with `PreferDualStack` set, testing a dual-stack GKE cluster with the default DNS setup of kube-dns did not correctly set both A and AAAA records for the headless service, and instead only did so when switching the cluster DNS to Cloud DNS. For both IPv4 and IPv6 to work simultaneously in a dual-stack cluster, we require headless services to return both A and AAAA records. If the host doesn't support IPv6 but the FQDN specified only has IPv6 addresses available, containerboot will exit with error code 1 and an error message because there is no viable egress route. Fixes #12215 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>	4 months ago
Aaron Klotz	b292f7f9ac	util/winutil/s4u: fix incorrect token type specified in s4u Login This was correct before, I think I just made a copy/paste error when updating that PR. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Aaron Klotz	5f177090e3	util/winutil: ensure domain controller address is used when retrieving remote profile information We cannot directly pass a flat domain name into NetUserGetInfo; we must resolve the address of a domain controller first. This PR implements the appropriate resolution mechanisms to do that, and also exposes a couple of new utility APIs for future needs. Fixes #12627 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Aaron Klotz	da078b4c09	util/winutil: add package for logging into Windows via Service-for-User (S4U) This PR ties together pseudoconsoles, user profiles, s4u logons, and process creation into what is (hopefully) a simple API for various Tailscale services to obtain Windows access tokens without requiring knowledge of any Windows passwords. It works both for domain-joined machines (Kerberos) and non-domain-joined machines. The former case is fairly straightforward as it is fully documented. OTOH, the latter case is not documented, though it is fully defined in the C headers in the Windows SDK. The documentation blanks were filled in by reading the source code of Microsoft's Win32 port of OpenSSH. We need to do a bit of acrobatics to make conpty work correctly while creating a child process with an s4u token; see the doc comments above startProcessInternal for details. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Irbe Krumina	24a40f54d9	util/linuxfw: verify that IPv6 if available if (#12598 ) nftable runner for an IPv6 address gets requested. Updates tailscale/tailscale#12215 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Brad Fitzpatrick	1023b2a82c	util/deephash: fix test regression on 32-bit Fix regression from `bd93c3067e` where I didn't notice the 32-bit test failure was real and not its usual slowness-related regression. Yay failure blindness. Updates #12526 Change-Id: I00e33bba697e2cdb61a0d76a71b62406f6c2eeb9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	21460a5b14	tailcfg, wgengine/filter: remove most FilterRule.SrcBits code The control plane hasn't sent it to clients in ages. Updates tailscale/corp#20965 Change-Id: I1d71a4b6dd3f75010a05c544ee39827837c30772 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	bd93c3067e	wgengine/filter/filtertype: make Match.IPProto a view I noticed we were allocating these every time when they could just share the same memory. Rather than document ownership, just lock it down with a view. I was considering doing all of the fields but decided to just do this one first as test to see how infectious it became. Conclusion: not very. Updates #cleanup (while working towards tailscale/corp#20514) Change-Id: I8ce08519de0c9a53f20292adfbecd970fe362de0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Aaron Klotz	7354547bd8	util/winutil: update UserProfile to ensure any environment variables in the roaming profile path are expanded Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Andrea Gottardo	e8ca30a5c7	xcode/iOS: support serial number collection via MDM on iOS (#11429 ) Fixes tailscale/corp#18366. This PR provides serial number collection on iOS, by allowing system administrators to pass a `DeviceSerialNumber` MDM key which can be read by the `posture` package in Go. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	5 months ago
Aaron Klotz	bd2a6d5386	util/winutil: add UserProfile type for (un)loading user profiles S4U logons do not automatically load the associated user profile. In this PR we add UserProfile to handle that part. Windows docs indicate that we should try to resolve a remote profile path when present, so we attempt to do so when the local computer is joined to a domain. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Andrew Dunham	93cd2ab224	util/singleflight: add DoChanContext This is a variant of DoChan that supports context propagation, such that the context provided to the inner function will only be canceled when there are no more waiters for a given key. This can be used to deduplicate expensive and cancelable calls among multiple callers safely. Updates #11935 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ibe1fb67442a854babbc6924fd8437b02cc9e7bcf	5 months ago
Aaron Klotz	df86576989	util/winutil: add AllocateContiguousBuffer and SetNTString helper funcs AllocateContiguousBuffer is for allocating structs with trailing buffers containing additional data. It is to be used for various Windows structures containing pointers to data located immediately after the struct. SetNTString performs in-place setting of windows.NTString and windows.NTUnicodeString. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Aaron Klotz	34e8820301	util/winutil: add conpty package and helper for building windows.StartupInfoEx StartupInfoBuilder is a helper for constructing StartupInfoEx structures featuring proc/thread attribute lists. Calling its setters triggers the appropriate setting of fields, adjusting flags as necessary, and populating the proc/thread attribute list as necessary. Currently it supports four features: setting std handles, setting pseudo-consoles, specifying handles for inheritance, and specifying jobs. The conpty package simplifies creation of pseudo-consoles, their associated pipes, and assignment of the pty to StartupInfoEx proc/thread attributes. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Maisem Ali	36e8e8cd64	wgengine/magicsock: use math/rands/v2 Updates #11058 Co-authored-by: James Tucker <james@tailscale.com> Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Maisem Ali	4a8cb1d9f3	all: use math/rand/v2 more Updates #11058 Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Brad Fitzpatrick	909a292a8d	util/linuxfw: don't try cleaning iptables on gokrazy It just generates log spam. Updates #12277 Change-Id: I5f65c0859e86de0a5349f9d26c9805e7c26b9371 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Andrew Dunham	8e4a29433f	util/pool: add package for storing and using a pool of items This can be used to implement a persistent pool (i.e. one that isn't cleared like sync.Pool is) of items–e.g. database connections. Some benchmarks vs. a naive implementation that uses a single map iteration show a pretty meaningful improvement: $ benchstat -col /impl ./bench.txt goos: darwin goarch: arm64 pkg: tailscale.com/util/pool │ Pool │ map │ │ sec/op │ sec/op vs base │ Pool_AddDelete-10 10.56n ± 2% 15.11n ± 1% +42.97% (p=0.000 n=10) Pool_TakeRandom-10 56.75n ± 4% 1899.50n ± 20% +3246.84% (p=0.000 n=10) geomean 24.49n 169.4n +591.74% Updates tailscale/corp#19900 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ie509cb65573c4726cfc3da9a97093e61c216ca18	6 months ago
Maisem Ali	9a64c06a20	all: do not depend on the testing package Discovered while looking for something else. Updates tailscale/corp#18935 Signed-off-by: Maisem Ali <maisem@tailscale.com>	6 months ago
Andrew Dunham	47b3476eb7	util/lru: add Clear method Updates tailscale/corp#20109 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I751a669251a70f0134dd1540c19b274a97608a93	6 months ago
Irbe Krumina	7ef2f72135	util/linuxfw: fix IPv6 availability check for nftables (#12009 ) * util/linuxfw: fix IPv6 NAT availability check for nftables When running firewall in nftables mode, there is no need for a separate NAT availability check (unlike with iptables, there are no hosts that support nftables, but not IPv6 NAT - see tailscale/tailscale#11353). This change fixes a firewall NAT availability check that was using the no-longer set ipv6NATAvailable field by removing the field and using a method that, for nftables, just checks that IPv6 is available. Updates tailscale/tailscale#12008 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	6 months ago
Andrew Dunham	25e32cc3ae	util/linuxfw: fix table name in DelStatefulRule Updates #12061 Follow-up to #12072 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I2ba8c4bff14d93816760ff5eaa1a16f17bad13c1	6 months ago
Anton Tolchanov	ac638f32c0	util/linuxfw: fix stateful packet filtering in nftables mode To match iptables: `b5dbf155b1/util/linuxfw/iptables_runner.go (L536)` Updates #12066 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	6 months ago
Andrew Lytvynov	c28f5767bf	various: implement stateful firewalling on Linux (#12025 ) Updates https://github.com/tailscale/corp/issues/19623 Change-Id: I7980e1fb736e234e66fa000d488066466c96ec85 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Co-authored-by: Andrew Dunham <andrew@du.nham.ca>	6 months ago
Claire Wang	41f2195899	util/syspolicy: add auto exit node related keys (#11996 ) Updates tailscale/corp#19681 Signed-off-by: Claire Wang <claire@tailscale.com>	6 months ago
Brad Fitzpatrick	1a963342c7	util/set: add Of variant of SetOf that takes variadic parameter set.Of(1, 2, 3) is prettier than set.SetOf([]int{1, 2, 3}). I was going to change the signature of SetOf but then I noticed its name has stutter anyway, so I kept it for compatibility. People can prefer to use set.Of for new code or slowly migrate. Also add a lazy Make method, which I often find myself wanting, without having to resort to uglier mak.Set(&set, k, struct{}{}). Updates #cleanup Change-Id: Ic6f3870115334efcbd65e79c437de2ad3edb7625 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	7455e027e9	util/slicesx: add AppendMatching We had this in a different repo, but moving it here, as this a more fitting package. Updates #cleanup Change-Id: I5fb9b10e465932aeef5841c67deba4d77d473d57 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
Andrea Gottardo	1d3e77f373	util/syspolicy: add ReadStringArray interface (#11857 ) Fixes tailscale/corp#19459 This PR adds the ability for users of the syspolicy handler to read string arrays from the MDM solution configured on the system. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	7 months ago
Irbe Krumina	add62af7c6	util/linuxfw,go.{mod,sum}: don't log errors when deleting non-existant chains and rules (#11852 ) This PR bumps iptables to a newer version that has a function to detect 'NotExists' errors and uses that function to determine whether errors received on iptables rule and chain clean up are because the rule/chain does not exist- if so don't log the error. Updates corp#19336 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	7 months ago
Irbe Krumina	3af0f526b8	cmd{containerboot,k8s-operator},util/linuxfw: support ExternalName Services (#11802 ) * cmd/containerboot,util/linuxfw: support proxy backends specified by DNS name Adds support for optionally configuring containerboot to proxy traffic to backends configured by passing TS_EXPERIMENTAL_DEST_DNS_NAME env var to containerboot. Containerboot will periodically (every 10 minutes) attempt to resolve the DNS name and ensure that all traffic sent to the node's tailnet IP gets forwarded to the resolved backend IP addresses. Currently: - if the firewall mode is iptables, traffic will be load balanced accross the backend IP addresses using round robin. There are no health checks for whether the IPs are reachable. - if the firewall mode is nftables traffic will only be forwarded to the first IP address in the list. This is to be improved. * cmd/k8s-operator: support ExternalName Services Adds support for exposing endpoints, accessible from within a cluster to the tailnet via DNS names using ExternalName Services. This can be done by annotating the ExternalName Service with tailscale.com/expose: "true" annotation. The operator will deploy a proxy configured to route tailnet traffic to the backend IPs that service.spec.externalName resolves to. The backend IPs must be reachable from the operator's namespace. Updates tailscale/tailscale#10606 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	7 months ago
Percy Wegmann	b7e5122226	util/osuser: add unit test for parseGroupIds Updates #11682 Signed-off-by: Percy Wegmann <percy@tailscale.com>	7 months ago
Andrew Dunham	e985c6e58f	ssh/tailssh: try fetching group IDs for user with the 'id' command Since the tailscaled binaries that we distribute are static and don't link cgo, we previously wouldn't fetch group IDs that are returned via NSS. Try shelling out to the 'id' command, similar to how we call 'getent', to detect such cases. Updates #11682 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I9bdc938bd76c71bc130d44a97cc2233064d64799	7 months ago
Joe Tsai	63b3c82587	ipn/local: log OS-specific diagnostic information as JSON (#11700 ) There is an undocumented 16KiB limit for text log messages. However, the limit for JSON messages is 256KiB. Even worse, logging JSON as text results in significant overhead since each double quote needs to be escaped. Instead, use logger.Logf.JSON to explicitly log the info as JSON. We also modify osdiag to return the information as structured data rather than implicitly have the package log on our behalf. This gives more control to the caller on how to log. Updates #7802 Signed-off-by: Joe Tsai <joetsai@digital-static.net>	7 months ago
Brad Fitzpatrick	7c1d6e35a5	all: use Go 1.22 range-over-int Updates #11058 Change-Id: I35e7ef9b90e83cac04ca93fd964ad00ed5b48430 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
Brad Fitzpatrick	271cfdb3d3	util/syspolicy: clean up doc grammar and consistency Updates #cleanup Change-Id: I912574cbd5ef4d8b7417b8b2a9b9a2ccfef88840 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
James Tucker	d0f3fa7d7e	util/fastuuid: add a more efficient uuid generator This still generates github.com/google/uuid UUID objects, but does so using a ChaCha8 CSPRNG from the stdlib rand/v2 package. The public API is backed by a sync.Pool to provide good performance in highly concurrent operation. Under high load the read API produces a lot of extra garbage and overhead by way of temporaries and syscalls. This implementation reduces both to minimal levels, and avoids any long held global lock by utilizing sync.Pool. Updates tailscale/corp#18266 Updates tailscale/corp#19054 Signed-off-by: James Tucker <james@tailscale.com>	7 months ago
James Tucker	db760d0bac	cmd/tailscaled: move cleanup to an implicit action during startup This removes a potentially increased boot delay for certain boot topologies where they block on ExecStartPre that may have socket activation dependencies on other system services (such as systemd-resolved and NetworkManager). Also rename cleanup to clean up in affected/immediately nearby places per code review commentary. Fixes #11599 Signed-off-by: James Tucker <james@tailscale.com>	7 months ago
Nick Khyl	8d83adde07	util/winutil/winenv: add package for current Windows environment details Package winenv provides information about the current Windows environment. This includes details such as whether the device is a server or workstation, and if it is AD domain-joined, MDM-registered, or neither. Updates tailscale/corp#18342 Signed-off-by: Nick Khyl <nickk@tailscale.com>	7 months ago
Irbe Krumina	1fbaf26106	util/linuxfw: fix chain comparison (#11639 ) Don't compare pointer fields by pointer value, but by the actual value Updates#cleanup Signed-off-by: Irbe Krumina <irbe@tailscale.com>	7 months ago
Joe Tsai	4bbac72868	util/truncate: support []byte as well (#11614 ) There are no mutations to the input, so we can support both ~string and ~[]byte just fine. Updates #cleanup Signed-off-by: Joe Tsai <joetsai@digital-static.net>	7 months ago
Joe Tsai	1a38d2a3b4	util/zstdframe: support specifying a MaxWindowSize (#11595 ) Specifying a smaller window size during compression provides a knob to tweak the tradeoff between memory usage and the compression ratio. Updates tailscale/corp#18514 Signed-off-by: Joe Tsai <joetsai@digital-static.net>	7 months ago
Irbe Krumina	92ca770b8d	util/linuxfw: fix MSS clamping in nftables mode (#11588 ) MSS clamping for nftables was mostly not ran due to to an earlier rule in the FORWARD chain issuing accept verdict. This commit places the clamping rule into a chain of its own to ensure that it gets ran. Updates tailscale/tailscale#11002 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	8 months ago

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382 Commits (1bd1d053349f53ac8c27e8afb268ab2c42e1e7bc)