Commit Graph
1467 Commits
Author SHA1 Message Date
riccardom d5a9f5b0ff [client] Do not refuse a caller's upload URL that an MDM policy overrides anyway
The privilege gate ran on the URL the caller named before the resolver applied
the MDM policy, so on a managed device an unprivileged `netbird debug bundle -U
--upload-bundle-url <host>` was refused with "requires root" — even though the
policy would have discarded that URL and uploaded to the pinned destination.
Gating a value that has no effect only turns a working bundle into a denial.

Read the policy before the gate and tell the gate the destination is pinned, so
it skips the caller-URL branch. --upload-bundle-insecure stays gated either way:
relaxing TLS towards the pinned host is a real weakening, and that one is the
caller's doing.

Reported by cubic on #7514.
2026-09-29 14:29:27 +02:00
riccardom acfa65c054 Merge remote-tracking branch 'origin/main' into fix_debug_upload_url_from_mgmt
# Conflicts:
#	management/server/activity/codes.go
#	management/server/store/sql_store.go
#	management/server/store/sql_store_test.go
#	upload-server/server/server.go
2026-09-28 10:56:27 +02:00
riccardom 483f4c3e47 [client] Say in --upload-bundle-url's help that an MDM policy overrides it
The text read as though the flag decided the destination. On a managed device it
does not: the debugBundleUploadURL policy wins, and the flag is ignored with a
line in the log. Someone passing it and seeing the bundle land elsewhere has no
way to know why from the help alone.
2026-09-25 14:39:38 +02:00
riccardom 578acab52d [client] Honour the MDM upload destination in the daemon
The remote job and both mobile SDKs applied the debugBundleUploadURL policy;
the daemon did not. So `netbird debug bundle -U` and the desktop UI — the two
paths a person drives by hand, and the ones a policy exists to constrain —
ignored the pin and uploaded wherever the caller or the management server said.

Read the policy under the same lock that already reads the management URL, and
pass it to the resolver, which puts it ahead of the caller's URL.

Reported by @pappz in review on #7514.
2026-09-25 13:37:30 +02:00
riccardom b3ee6c9af2 [client] Move the MDM precedence into ResolveUploadURL
Three of the four bundle paths ordered the destinations themselves, each with
its own copy of "MDM first, then what was asked for". Give the resolver the MDM
value as its first argument so the order lives in one place and a call site
cannot express a different one.

Pure refactor: the daemon passes "" for now, matching what it does today, and
the remote job and both mobile SDKs resolve exactly as before.
2026-09-25 13:34:17 +02:00
Riccardo Manfrin aa1e66cc88 [client] Raise the daemon IPC receive limit above gRPC's 4 MB default (#7676)
Connections to the daemon were left on gRPC's own defaults, which cap a received
message at 4 MB. A detailed status carries an entry per peer, so on a large
deployment the response outgrows that cap and the command fails outright:

  netbird status -d
  Error: status failed: grpc: received message larger than max (4287609 vs. 4194304)

The limit is raised where the daemon dial options are built, so every caller
inherits it: the CLI, the desktop UI, the JSON gateway, and the SSH client and
proxy. It is overridable through NB_DAEMON_GRPC_MAX_MSG_SIZE for a deployment
that outgrows the new default too, mirroring what the management client already
does with NB_MANAGEMENT_GRPC_MAX_MSG_SIZE, and reusing its 16 MB default.

Only the receive direction needs raising. Requests to the daemon are small, and
gRPC does not cap the send side by default, so the daemon could already send a
response the caller then refused to read.
2026-09-25 11:17:34 +02:00
Riccardo Manfrin c7f610e6cd [misc, android] Build and lint the mobile Go code in CI (#7641)
Nothing in CI compiles the files behind //go:build android or //go:build ios.
The android bridge builds 7 of its 23 files on linux and skips client.go; the
iOS SDK is not built at all. The linter matrix picks a GOOS by picking a runner
OS, so it loads the same file set as the host build and never sees them either.
A type error in client/android/client.go therefore passes every check on its
PR, merges, and is discovered by netbirdio/android-client after sync-tag.yml
fires trigger_android_bump on the release tag.

The new Mobile workflow cross-compiles ./client/android/... for the GOARCH
values gomobile ships and ./client/ios/..., and vets the android bridge. The
new Android and iOS lint jobs run golangci-lint with GOOS/GOARCH in the job
env. No NDK, Xcode or gomobile is needed: these are library packages, so the
compiler type-checks them without a link step, and the dependency graph drags
in the android/ios-tagged files across client/iface, client/internal/dns and
client/internal/routemanager with them.

Linting those files for the first time surfaces one gosec G101 on the SSH
password-required marker. It is a sentinel string the Java side matches on,
not a credential, so it is suppressed at the declaration.
2026-09-25 10:21:20 +02:00
Theodor Midtlien 4c19226342 [client] Use POSIX style file read/write of json for windows (#7631)
* Use POSIX-like file read/write of json for windows + tests: allow renaming an open file.
2026-09-24 10:23:50 +02:00
Riccardo Manfrin 6e17f50040 [client] Validate the saved service parameters and pin the netsh lookup (#7584)
* [client] Export the only-owner-writable path check from elevate

Pure refactor, no behavior change: the existing checkOnlyOwnerWritable gets a
thin exported wrapper so callers outside the elevation path can reuse it. No
call site changes here.

* [client] Validate the saved service parameters before applying them

The install reads <stateDir>/service.json and applies it to the service it then
registers: its arguments, its config path and its environment. The restricted
ACL that saveServiceParams puts on the state directory is applied when the file
is written, which is not necessarily before the file is first read, so the
install now checks the file rather than assuming it.

A file whose ownership or permissions are not the ones saveServiceParams
produces is treated as absent, and the install proceeds with its defaults. The
check covers the directories above the file as well, so what is checked is what
is read.

* [client] Restrict which environment variables the service is registered with

--service-env, and the service.json it persists to, accepted any name. A small
set of them decides how a process resolves the executables and libraries it
loads, and the daemon needs none of those: it now refuses them when they are
passed explicitly, and drops them with a warning when they come back from a
service.json written by an older version, so an upgrade does not fail over a
variable nobody needs.

* [client] Resolve netsh by absolute path

The lookup consulted PATH first and fell back to System32, in both the copy the
userspace firewall uses and the one that tears the interface down. It now asks
Windows for the system directory, so the resolution no longer depends on the
environment the service happens to be started with.

* [client] Move the System32 lookup into a package both callers share

Pure refactor, no behavior change: client/iface and client/firewall/uspfilter
carried a copy each of the same function, and neither imports the other, so the
body moves to client/internal/wincmd — alongside winregistry, which is where
the client's other Windows-only helper already lives. Both call sites now read
wincmd.System32("netsh").

* [client] Cover the System32 lookup with a test

Asserts what the previous commits changed: the lookup is absolute, and neither
PATH nor %SystemRoot% moves it.

* [client] Refuse the loader environment families by prefix

Review follow-up on the previous commit:

- LD_* and DYLD_* are now refused whole rather than name by name. Their members
  differ per platform and libc and grow with new OS releases, so a list of them
  is out of date as soon as it is written — DYLD_FALLBACK_LIBRARY_PATH and
  DYLD_FALLBACK_FRAMEWORK_PATH were already missing from it.
- The names are folded to upper case only on Windows, where a variable is the
  same one however it is spelled. Elsewhere the environment is case-sensitive,
  so Path and PATH are two variables and only the exact spelling is the one that
  is read; the fold refused the wrong one.
- TEMP and TMP stay in the denylist, but the rationale and the message now say
  what they actually decide: where the service writes, not what it loads.
2026-09-23 21:47:48 +02:00
riccardom c3993bef73 [client] Keep redacting URLs that carry a bracketed IPv6 host
Excluding square brackets from the match stopped the pattern from eating the
prose after a URL, but brackets are also the IPv6 host delimiter. For
`https://[2001:db8::1]/k?X-Amz-Signature=...` the pattern found nothing after
the scheme and matched at all, so the URL survived whole — signed query
included — in UploadFailureReason, the daemon log, and a remote job's failure
record on the management server.

Take a bracketed host in a leading group, then continue with the delimiter-free
class as before. Two cases added, one with a port.

Reported by cubic (P1) and CodeRabbit (CWE-200) on #7514.
2026-09-23 12:34:40 +02:00
Riccardo Manfrin cb7ca8ef3f [client,management] Skip route firewall rule computation when no firewall (#7624)
* [client,management] Skip route firewall rule computation when no firewall

A peer that runs with the firewall disabled has no ACL manager and no
firewall to program, so nothing ever reads RoutesFirewallRules: the only
consumers are acl.Manager, which is reached solely when e.acl is set, and
the legacy-management probe in updateNetworkMap, which is guarded by a
non-nil firewall.

Building those rules is the most expensive part of a sync on a peer that
routes many network resources. On a 15k-peer deployment a debug bundle
showed getPeerNetworkResourceFirewallRules accounting for 62% of the
allocations of Calculate, and Calculate for effectively all of the
allocations of handleSync, which was taking 3.2s on average and holding
the engine lock for the duration.

Let the caller ask Calculate to leave the rules out. The client passes
its existing DisableFirewall setting; the management server keeps the
default and still produces them.

RoutesFirewallRulesIsEmpty is set from the resulting empty list, so a
receiver that would otherwise infer legacy management from an empty rule
set does not misread the skip.

* [client,management] Cover the skip flag through the envelope

Review feedback on #7624.

The components test compared only the length of the peer firewall rules, so
a change to their content would have passed while the message claimed they
came out unchanged. Compare the slices.

The skip path was also only exercised by setting the field directly on the
components, which bypasses the envelope conversion where
RoutesFirewallRulesIsEmpty is derived. That bit is what keeps the client from
reading skipped rules as a legacy management server, so it gets a test that
goes through EnvelopeToNetworkMap with the flag set.

* [management] Give the router a peer ACL so the rule comparison bites

Review feedback on #7624.

peer-router-1 appears in no peer ACL in the shared fixture, so its
FirewallRules came out empty and the equality assertion compared two empty
slices — it would have passed even if the peer rules were dropped entirely.

Add a policy covering the router and require the baseline to be non-empty
before comparing.
2026-09-23 11:50:44 +02:00
Viktor Liu f6109a3395 [client] Remove the empty GPO DNS policy store on Windows teardown (#7563) 2026-09-22 12:44:10 +02:00
Zoltan Papp bc0671fd21 [client] Fix peers not being notified when the relay connection drops (#7490)
* [relay] Signal relay disconnects through the conn context

AddCloseListener deduplicated listeners by comparing
reflect.ValueOf(callback).Pointer(). For a method value that pointer is
the address of the compiler-generated wrapper, not an identity bound to
the receiver, so every peer's w.onRelayClientDisconnected compared equal.

All peers on the home relay register under the same connectionURL key, so
only the first registration survived and the rest were silently dropped.
On a relay disconnect those peers were never notified: statusRelay stayed
connected and the reconnect guard never fired. The relayed net.Conn itself
was closed by closeAllConns, so nothing leaked, but the peer state machine
did not learn about it. Foreign relays had the same defect scoped to the
peers sharing that server.

Rather than fixing the deduplication, drop the peer-level listener registry
entirely. A relayed Conn now exposes Context(), cancelled when the
connection is torn down, with a cancellation cause naming the reason. This
is the same shape quic-go uses for its Conn and Stream types, and it
removes the whole class of problems around listener identity, lifetime and
deregistration: the signal belongs to the resource instead of a side table.

WorkerRelay watches that context in a goroutine whose lifetime matches the
connection. A watcher that wakes up for a superseded connection compares
the conn pointer against the current one and returns without touching the
state machine, so a fast relay reconnect cannot have a stale watcher tear
down the connection that replaced it.

Client.SetOnDisconnectListener stays: it is server-level and drives the
reconnect guard and foreign relay eviction, unrelated to peers.

handleRelayReady also checks the conn context, closing the race where the
relay dies between OpenConn and the readiness handoff and the peer would
otherwise build a WireGuard endpoint over a dead connection.

TestNotifierDoubleAdd covered the removed mechanism and is gone.
TestForeignAutoClose asserted nothing (both branches logged); it now waits
for the relay to leave the client map and fails if it does not.

* [relay] Fix build: return the concrete conn from Client.OpenConn

OpenConn now returns *Conn, but it still went through connContainer.netConn(),
which widens to net.Conn. The helper had one caller and only existed to produce
the interface value the signature no longer wants, so return container.conn
directly and drop it.

* [relay] Assert the local-close cancellation cause explicitly

The local-close test only rejected ErrServerDisconnected, so it would also
have passed for ErrPeerDisconnected or a bare context.Canceled. closeConn
cancels with net.ErrClosed, so assert that.

* [client] Ignore relay disconnects from superseded connections

The relayed conn watcher compared the conn pointer under relayLock, released
it, and only then tore the connection down. A new offer could install its
replacement in that window, so a watcher that validated the old pointer went
on to close the proxy of the connection that had already replaced it and
report the peer as disconnected while it was up.

Move the decision to where the teardown happens. Conn records which relayed
connection the current proxy was built from, and onRelayDisconnected takes the
connection the signal belongs to and drops it under conn.mu when it is no
longer the current one. Check and effect are now in the same critical section,
so the verdict cannot go stale before it is acted on.

This also covers the proxy read loops, whose disconnect listener took no
argument and had the same defect: it now names the connection it belongs to.
The WG timeout path keeps passing nil, since it deliberately tears down
whatever is current.

* [client] Bind the relayed conn reference to the proxy swap

relayedConnRef was set at the top of the readiness path, but wgProxyRelay only
changes at the end, in setRelayedProxy. The two failure returns in between —
newProxy and ConfigureWGEndpoint — left the reference pointing at a connection
that never became active while the old proxy was still installed. A disconnect
of that old, live relay would then be dismissed as belonging to a superseded
connection and never cleaned up.

Set the reference in setRelayedProxy, next to the proxy it belongs to. Both
success paths go through it and neither failure path does, so no failure branch
has to remember to roll anything back.
2026-09-21 17:00:37 +02:00
Zoltan Papp e70ec07320 Read the session deadline under the status read lock (#7550)
GetSessionExpiresAt took the exclusive lock for a plain field read, so
every caller queued behind writers and behind each other. The Android
SessionMonitor polls it from the main thread, and in the captured ANR
that is exactly where the main thread was blocked while hundreds of
peer-list callbacks held or waited on the same mutex.

d.mux is already an RWMutex and the other getters use RLock; this brings
the deadline read in line with them.
2026-09-15 12:05:57 +02:00
Zoltan Papp 2d28f9002a [client] Fix the Windows tray deadlock on re-entrant window creation (#7449)
* [client] Fix the Windows tray deadlock on re-entrant window creation

The Wails systray runs the left-click handler synchronously inside the
tray window procedure, and creating a window on a running app pumps a
nested Win32 message loop while WebView2 initialises. ensureWindow held
the non-reentrant createMu across that creation, so the second button-up
of a double click re-entered ShowWindow from the pump and blocked the
main thread on its own lock. A goroutine holding createMu while the main
thread pumped, and the Open* dialogs holding mu across NewWithOptions,
Show, Hide and InvokeSync, exposed the same inversion.

WindowManager now serialises creation with a per-slot creating flag and
queues the callers' operations until the window exists, and no Wails call
runs while mu is held. The tray click and second-instance handlers call
ShowWindow off the message loop.

* [client] Serialize window operations while a slot is being created

Callers arriving after the window is published but before the creator
has drained the queue took the existing-window fast path and could run
ahead of older queued operations, so a newer SetURL could be overwritten
by an older one. withWindow now queues every caller while the creating
flag is set and clears the flag only once the queue is seen empty under
the lock.

A factory panic or a nil window left the creating flag set and the slot
dead; creation and drain now reset that state on early exit.

hideOtherWindows records the windows it hid only when no restore ran
in between, tracked by a generation counter, and re-shows them otherwise,
so a restore racing the hide cannot strand hidden windows.

* [misc] Run the client/ui subpackage tests in CI

The three test workflows filtered the package list with a `/client/ui`
prefix match, which dropped the subpackages along with the package that
cannot compile without a frontend build. `services`, `preferences`,
`i18n` and `authsession` all carry Go-side unit tests that never ran,
including the window manager re-entrancy regression test.

Anchor the pattern so only `client/ui` itself is excluded. The linux leg
keeps the prefix match on 386, where only the 64-bit gtk4/webkitgtk dev
packages are installed and the Wails application package would fail to
link, and the alpine container job keeps it for the same reason.

* [misc] Run the client/ui subpackage tests on a gtk4 4.10 runner

The previous commit let the subpackages into the linux client job, where
client/ui/services failed to build: the wails runtime's linux cgo layer
uses GtkFileDialog, which arrived in gtk4 4.10, and the job's ubuntu-22.04
runner ships 4.6.

Move them to their own job pinned to ubuntu-24.04 and restore the linux
client job's original exclusion, leaving the 386 and privileged legs on
the runner they have used since 2024. The new job needs no build cache,
sudo or privileged tag, so it stays a few seconds long.

Darwin and Windows keep the anchored pattern from the previous commit and
already run these tests green, including the window manager re-entrancy
regression test on the platform the deadlock was reported on.

* [client] Defer a window close that lands while the window is still being created

WindowManager publishes a dialog's slot only after the factory returns,
and on Windows the factory blocks in the WebView2 embed pump. A Close*
arriving in that gap found a nil slot and returned without doing
anything, so the dialog appeared afterwards for a flow that had already
been cancelled. The pre-fix Open* dialog functions held mu across the
whole creation, which blocked a concurrent Close* until the slot was
set; removing that lock hold reopened this gap.

Close* now goes through closeWindow: while the slot is being created it
records a closer in pendingClose, and finishCreation runs that closer
before any queued operation, so a window that is going away is never
shown and Wails never sees a Show on a destroyed window, which would
recreate it. Ops queued behind a close are dropped; windowOp carries no
factory, so they cannot be replayed into a new creation, and the
frontend callers reissue on the next state change.

The browser-login slot uses the same restoring closer from both
CloseBrowserLogin and CloseRenewFlow, since the popup's WindowClosing
hook only restores on a user close. Where two closers race one
creation the first registered wins, so a later caller cannot replace a
restoring closer with one that does not restore.
2026-09-14 15:37:46 +02:00
riccardom 60d1181535 [client] Stop the URL redaction from eating the prose after the URL
The class `[^\s"']+` ran past every delimiter that is not whitespace or a quote,
so a URL followed by `)`, `>` or a backtick took the closing character and the
words after it into the match, and everything past the small TrimRight set was
dropped from the message:

    (see https://upload.example.com/x?t=1) for details
    -> (see https://upload.example.com for details

Stop the match at those delimiters and leave TrimRight to sentence punctuation.
Three cases added.

Reported by cubic on #7514.
2026-09-14 12:37:23 +02:00
riccardom 9e9f5f304c [client] Strip URLs out of debug bundle upload errors
Redacting the URL in the log line left the error itself untouched, and Go's
*url.Error prints the URL whole. That error does not stay local: it becomes
UploadFailureReason for the CLI and the desktop UI, and for a remote job it is
stored in the management server's job record and shown in the dashboard. A
sample from a failed job:

    Client error: 'upload debug bundle: get presigned URL: Get
    "https://helloworld.asda1234:2356?id=eb23d149..."'

The service URL can carry userinfo or a query token, and the presigned URL the
service hands back carries credentials in its query by design, so the second
step leaks more than the first.

UploadDebugBundle now rewrites every URL in its error down to scheme://host, on
the way out, which covers the daemon, both mobile SDKs and the job runner at
once. The original error stays reachable through Unwrap.

Reported by cubic on #7514.
2026-09-14 11:34:11 +02:00
riccardom b731521e4f [client] List anonymizeLevel in the WAILS-API DebugBundleParams reference
The shape omitted anonymizeLevel, which has been on the Go struct
(client/ui/services/debug.go) and set by the frontend since the strict
anonymization level landed. This file is the reference for every model shape, so
the omission propagates to anyone reading it instead of the generated bindings.

Reported by cubic on #7514.
2026-09-14 09:19:35 +02:00
riccardom d247bda54d [client] Stop documenting a missing published destination as an upload failure
WAILS-API.md listed "a deployment that publishes no upload service" among the
causes of uploadFailureReason. That was true of an earlier revision; the
resolver now falls back to the service NetBird runs, so the case never produces
a failure. Reserve the field for a destination that rejects the upload or cannot
be reached.

Reported by CodeRabbit on #7514.
2026-09-14 09:19:25 +02:00
riccardom 5c665c1399 [client] Correct the stale cloud-only note on the UI's upload option
The comment still described the fallback as reached only by a peer enrolled with
NetBird's cloud, which stopped being true when the default became NetBird's
service for every deployment. Left as it was, a maintainer would read it and
assume self-hosted peers keep their bundles local.

Reported by cubic on #7514.
2026-09-14 09:18:59 +02:00
riccardom 2befe96c31 [client] Say in --upload-bundle-url's help that the default can be NetBird's service
The text described the empty flag as "the one the management server publishes"
and stopped there, so a reader had no way to know what happens when it publishes
none. Name the fallback, and scope the root requirement to a host other than
NetBird's rather than to setting the flag at all.

Reported by cubic on #7514.
2026-09-14 09:18:44 +02:00
riccardom 298ad3e69d [client] Validate the resolved remote-job upload destination, not just the requested one
validateBundleUploadURL ran on the job's URL or the MDM override and then
ResolveUploadURL folded in the destination published by management, which never
met the same check. A malformed or plaintext published value therefore slipped
through resolution and failed later inside UploadDebugBundle's requireHTTPS,
surfacing as a transport error instead of a validation one. Management validates
at write time, so this only bites against an older or mismatched server — but
the two destinations are interchangeable and should be held to one rule.

Reported by cubic on #7514.
2026-09-14 09:18:28 +02:00
riccardom 02d88fdeb0 [client] Refuse --upload-bundle-insecure only when an upload is requested
A request with no URL, no upload and uploadInsecure set was denied, although
uploadInsecure has no effect on a local-only bundle: there is no destination to
weaken, and the caller only wanted the file on disk. Pass the upload intent into
the gate and apply the empty-URL branch only when the request asks to upload.

Reported by cubic on #7514.
2026-09-14 09:18:02 +02:00
riccardom 82aa7f7b04 [client] Log only scheme and host of the debug bundle upload URL
The URL reaches the daemon from the management server or from the caller and can
carry userinfo or a token in its query. Both log lines wrote it whole, into the
file that then ships inside the very bundles this uploads.

Reported by CodeRabbit (CWE-532) and cubic on #7514.
2026-09-14 09:16:51 +02:00
riccardom 803b0d6db0 [management,client] Keep the published upload destination across partial config updates
pushNewTURNTokens and pushNewRelayTokens send a SyncResponse whose NetbirdConfig
carries only Turns and Relay. handleDebugUploadUpdate read the absent Debug as
an empty destination and stored it, so every TURN credential refresh — every few
minutes — silently dropped the operator's choice and the next bundle went to the
service NetBird runs. That is the exact failure this branch exists to prevent.

A nil DebugConfig now carries no information and is left alone. To keep an
operator's clear reaching the peer, toNetbirdConfig always emits Debug on the
full config it builds, empty URL included, so the peer can tell "cleared" from
"not mentioned".

Reported by cubic on #7514.
2026-09-14 09:16:10 +02:00
Brandon Hopkins ec0c36b0e7 [client] Add light mode with system, light, and dark theme options (#7344)
* desktop UI light mode

* Theme review fixes plus macOS window outline fix

* Windows runtime chrome re-theming plus apply serialization

* Windows chrome threading and theme event ordering fixes

* Darken toggle and setting sidebar text

* resolve theme appearance, apply on UI thread

* read theme once per window

* Re-assert Windows dark opt-in after SetTheme

* split app-wide GTK theming from per-window chrome

* Update Wails dependency and checksums

* KDE tray icon panel fix

* Five review fixes: theme ordering, cgo dedup, KDE panel resolution

* Path guard hardening, toggle contrast, windows comment

* non-vacuous escape tests

* Default view edits

* Polish settings nav, controls, borders, and disc

* Profiles settings boarder, modals, and buttons

* Additional edits based on feedback

* Switch colors away from slight blue hue

* Update missing lang

* Fix vertical tab active view
2026-09-11 08:25:10 -07:00
Zoltan Papp 794956a7a3 [client] Fix relay instance address race (#7498)
Read the relay instance URL and IP atomically to prevent reconnects from mixing values from different connections. Extend existing connection and offer/answer logs with relay URLs and IPs to help trace mismatched advertisements.
2026-09-11 16:21:10 +02:00
riccardom a8ba9d0149 [client] Apply the published upload destination at login too
Engine.Start receives the login response's NetbirdConfig but only runs it
through PopulateNetbirdConfig, so handleDebugUploadUpdate never saw it: the
destination the management server publishes reached the engine only on the
first sync afterwards. A debug bundle requested in that window resolved no
published destination and fell back to the service NetBird runs, even on a
deployment that had configured its own — the opposite of what configuring it
is for.

Seen with a remote job triggered shortly after the peer reconnected: the job
succeeded against NetBird's upload service while the account setting named a
different host.
2026-09-11 15:51:49 +02:00
Riccardo Manfrin a419e770d9 [client, proxy] Make the buffer-pool retune reachable while a device is stalled (#7452)
* [client] Track the WireGuard device on the engine as a lock-free handle

Add an atomic handle on the wg device next to wgInterface, stored once the
interface is up and cleared when it is closed. Nothing reads it yet, so this
is a pure addition with no behavior change; it exists so the next commit can
reach the device without taking syncMsgMux.

* [client] Retune the WireGuard buffer pool without the engine lock

SetPerformance took syncMsgMux before reaching the device. That lock is held
by handleSync while it adds and removes peers, and peer removal is exactly
what blocks when a device's buffer pool is exhausted: Peer.Stop waits on a
keepalive timer callback that is itself parked in WaitPool.Get. Raising the
cap is the way out of that state, so the call must not queue behind the lock
the stall is holding.

Read the device through the atomic handle instead. Device.SetPreallocatedBuffersPerPool
takes the pool's own lock and broadcasts, so the waiters wake up.

* [proxy] Extract the buffer-cap apply loop out of the perf handler

Pure move: the loop over the registered clients becomes applyBufferCap, with
the same sequential behavior and the same return values. Split out so the next
commit can change how it iterates without the diff also carrying the move.

* [proxy] Bound the perf endpoint so one wedged client cannot hold it

The apply loop was sequential and unbounded. embed.Client.SetPerformance goes
through the client lock, which Start holds for the whole of a startup, so a
single account that is busy or wedged delayed the new buffer cap for every
other account on the node -- on the endpoint whose whole purpose is to
un-wedge a node.

Apply to all clients concurrently and give the whole call a 5s budget.
Accounts that do not answer in time are reported in "failed" instead of
blocking the response.

* [client] Drop the device handle before closing the interface

close() cleared the atomic handle only after wgInterface.Close() returned, so a
concurrent SetPerformance could still load it, retune a device that is being
torn down, and report the change as applied for an engine that has stopped.
Clear it first, so the window closes before the teardown begins.

Reported by cubic on PR #7452.

* [proxy] Put the per-client retune behind a field

Pure refactor: applyBufferCap calls h.setPerformance instead of the client
method directly, and NewHandler wires it to setClientPerformance. Same call,
same behavior; the seam is what lets the next two commits be tested without a
live embedded client.

* [proxy] Do not report a finished retune as timed out

When the deadline fires, select chooses at random among the ready cases, so a
result already sitting in the buffered channel could be skipped and its account
reported as timed out even though the cap had been applied. Drain what is
buffered before declaring the rest pending.

Reported by cubic on PR #7452.

* [proxy] Keep one retune per account in flight

The 5s budget bounds how long the endpoint waits, not the work: SetPerformance
goes through the embedded client's lock, and on a wedged account Stop holds that
lock forever, so every retry left one more goroutine parked there.

Route each account through a single worker. A request that finds one already
running takes its result if it has landed, and otherwise reports the account
under "in_flight" instead of starting a second attempt. One stuck account now
costs one goroutine, no matter how often the endpoint is called.

Reported by CodeRabbit and cubic on PR #7452.

* [proxy] Make the retune budget a var

Pure refactor: perfApplyTimeout becomes a var so a test can shorten it instead
of waiting five seconds. Same value, same behavior in production.

* [proxy] Extract the buffered-result drain

Pure refactor: the loop that empties the results channel when the deadline
fires becomes collectBuffered. Same behavior; split out so it can be tested
on its own, which the inline version could not be without racing the deadline.

* [proxy] Cover the retune single-flight and the deadline drain

TestApplyBufferCapSingleFlightPerAccount fails without the worker registry:
five calls against a client stuck in its own lock start five blocked workers
instead of one.

TestCollectBufferedCountsResultsReadyAtTheDeadline pins the drain helper's
contract - buffered results counted, errors recorded, only unanswered accounts
left pending. It drives collectBuffered directly: through applyBufferCap the
two select cases race by construction, so an end-to-end version of it would
pass on the unfixed code about half the time.

* [proxy] Keep the worker alongside each pending account

Pure refactor: the pending set becomes a map to the account's worker instead of
an empty struct. Same membership and same behavior; the next commit needs the
worker to resolve an account whose result has not reached the channel yet.

* [proxy] Publish a retune result before releasing its slot

The worker sent its result last, after taking perfMu to remove itself from the
registry. That lock is taken once per account by every caller walking the fleet,
so a worker that finished on time could queue behind an apply over thousands of
accounts and land after the deadline. Send first, deregister after.

Reported by cubic on PR #7452.

* [proxy] Read the worker, not the clock, for a finished retune

Publishing earlier only narrows the window: a client that answers just before
the deadline can still be reported as timed out. At the deadline the workers
themselves are authoritative - a closed done channel means the retune finished
and w.err carries its outcome, ordered by the close. Consult them instead of
declaring every pending account timed out, and keep the timeout label for the
ones actually still running.

Reported by cubic on PR #7452.

* [proxy] Cover the finished-worker resolution at the deadline

Fails on the previous behavior with "applied = 0, want 1": every pending
account was labelled a timeout, including the one whose retune had already
completed.
2026-09-11 09:38:22 +02:00
Nicolas Frati 2f48dbea6a [client] Add a release-wired rootless UBI image variant (#7469)
* [client] Add a release-wired rootless UBI image variant

* [client] Add ARM64 to the rootless UBI image

* [client] Express license output validation as a guard
2026-09-10 21:41:59 +02:00
riccardom c71fd1d841 [management,client] Default to NetBird's upload service when nothing is configured
The previous commit made a peer with no destination — no MDM override, no URL
named by the caller, nothing published by its management server — refuse to
upload and keep the bundle local unless it was enrolled with NetBird's cloud.
That closed the reported data-boundary concern, but it broke the default for
everyone who uploads a bundle as part of their day: a self-hosted user opening
a support ticket got a refusal where the command used to work.

Product decision (NetBird's, not the reporter's): the knob to keep bundles
inside your own infrastructure is what this branch provides, and it is enough.
The default stays the service NetBird runs, self-hosted included. An admin who
needs the bundles to stay in-house configures the destination; until then the
everyday flow keeps working.

So ResolveUploadURL drops the cloud check, the sentinel error and the
managementURL argument, and never fails:

    MDM  >  explicitly named URL  >  published by management  >  NetBird's service

Nothing observable changes for a deployment that configures nothing, which also
removes two edge cases the fail-closed default had: a peer still enrolled on the
legacy api.wiretrustee.com host would have been classified self-hosted and
refused, and an upgrade would have silently stopped uploads for self-hosted
deployments relying on them. The privilege gate is unaffected — a host other
than the default one still requires a privileged caller, so pointing the CLI
somewhere other than what management published needs root.
2026-09-10 16:38:41 +02:00
riccardom fcb9b02451 [client] Require privilege to relax TLS on a resolved upload destination
requirePrivilegeForUploadURL returned early on an empty URL, which was correct
while an empty URL meant "do not upload": there was no destination for
--upload-bundle-insecure to weaken. Now an empty URL means "use the destination
the management server published", so an unprivileged local caller could send
upload=true with an empty URL and uploadInsecure=true and have the root daemon
PUT the bundle to that destination with TLS verification disabled.

Gate the insecure flag on the empty-URL path too. A named URL keeps its existing
order, so a malformed one still reports InvalidArgument rather than a privilege
error.
2026-09-10 16:38:41 +02:00
riccardom 9f6d17b9e8 [management,client] Take the debug-bundle upload destination from management
The debug-bundle paths that upload without a human picking a destination
compiled the vendor endpoint in: the mobile clients and the desktop UI hold
`https://upload.debug.netbird.io/upload-url` as a constant, the CLI defaults its
flag to it, and the remote job falls back to it when nothing else is set. A
self-hosted deployment therefore shipped peer logs, routes, DNS and firewall
state to NetBird-run infrastructure without its operator ever configuring that,
and had no way to point those paths anywhere else. #7147 and #7153 gave the
remote job a per-job URL and an MDM override, but neither reaches the mobile,
UI or CLI paths, and both fail open when unset.

Publish the destination from the management server instead, on the channel that
already carries stun/turn/signal/relay/flow/metrics:

- `NetbirdConfig.debug.upload_url`, sourced from the new account setting
  `debug_bundle_upload_url` (REST + dashboard) and falling back to the new
  `DebugUpload.URL` in the management server config, which a self-hosted install
  can set once so a fresh account is not left on the vendor default. Both are
  validated as https-with-host where they are written; a change fans out to
  connected peers rather than waiting for the next login.
- One resolver on the client, `debug.ResolveUploadURL`, used by every path:
  MDM override > explicitly named URL > destination published by management >
  the NetBird service, but only for a peer enrolled with NetBird's cloud.
  Anything else fails closed with ErrNoUploadDestination and the bundle stays
  local, which is the behaviour change: a self-hosted deployment that names no
  upload service no longer uploads at all.
- The engine keeps the published value (`Engine.DebugUploadURL`) so the bundle
  paths, which run off the engine loop, do not have to read it back out of the
  opt-in sync-response store.
- The daemon request grows `upload`, so "upload to wherever this deployment
  says" is expressible; an empty `uploadURL` no longer has to mean "no upload".
  The privilege gate is unchanged and still applies only to a URL the local
  caller named — a destination published by management is the operator naming
  their own service.
- The desktop UI stops carrying a vendor URL of its own and sends the intent.

Reported privately as GHSA-hf99-43rj-h577.
2026-09-10 16:38:41 +02:00
Zoltan PappandClaude Opus 5 9615d2ab16 [client] Report the remote jobs key in the MDM UI snapshot (#7485)
* [client] Report the remote jobs key in the MDM UI snapshot

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* [client] Align the remote jobs snapshot key with the policy key

The snapshot field carried the JSON tag remoteJobsAllowed while the policy
key is allowRemoteJobs. GetConfigResponse.mDMManagedFields reports the raw
policy keys, and applyMDMRestrictions matches them against the struct's JSON
tags, so the field never turned true for a policy that set the key.

Every other field in Fields already uses its policy key as the JSON tag; this
was the only divergence.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-10 12:06:30 +02:00
Nicolas Frati 15a684248c [client] Support arbitrary UIDs in rootless image (#7440)
* [client] Support arbitrary UIDs in rootless image

* [client] Keep rootless executables root-owned

* [client] Harden arbitrary UID image validation

* [client] Preserve executable access in rootless image

Keep the binary and entrypoint executable when deployments override the runtime group. Retain root ownership so non-root users cannot modify either file.

* [client] Verify rootless state reuse with a stable UID

Persisted profiles remain scoped to the creating UID. Verify same-UID container recreation without broadening application permissions, and document the Kubernetes volume permission behavior observed on OpenShift. Remove unused synthetic-user home metadata.

* [client] Separate image changes from invoking user fix

Keep this PR limited to resolving unmapped non-root invoking users. Move container permissions and their smoke test to a dependent image branch so they can be reviewed separately.

* [client] Restore invoking process user test

Retain coverage for successful current-user lookup without sudo. Numeric-identity fallback tests do not cover this existing behavior.
2026-09-10 12:02:19 +02:00
Viktor Liu d101f6cc46 [client] Redirect DNS port 53 with UDP and TCP DNAT instead of the eBPF forwarder (#7439) 2026-09-09 11:32:11 +02:00
Riccardo Manfrin d2e62e358a [client] Compare MDM-managed URLs as endpoints, not as strings (#7472)
A policy that enforces a management URL refuses any SetConfig or Login whose
URL differs from it. The comparison normalized only the default port, so
three ways of writing the very endpoint the policy names were reported as
conflicts:

  policy https://mgmt.example.com  vs  https://mgmt.example.com/     refused
                                       https://MGMT.example.com      refused
                                       https://mgmt.example.com:0443 refused

For an MDM-managed deployment whose stored or command-line URL is spelled
differently from the policy's value, that means every settings update is
refused with an MDMManagedFieldsViolation naming a field the caller did not
change. `netbird up --management-url https://MGMT.example.com` reproduces it.

The rules now live in util.SameServiceURL, and ConflictURL delegates: scheme
and host compared case-insensitively, the effective port normalized
numerically, a trailing slash ignored, and a path otherwise still part of the
identity so /other remains a divergence. Unparseable input falls back to
string equality.

util rather than either caller, because comparing two service URLs is
neither device management nor profile storage, and more than one place does
it: an MDM-enforced management URL against a requested one here, a stored
profile URL against a command-line one in profilemanager and the SSH gate.
Every copy of these rules that drifts turns an equivalent URL into a refused
request, which is how this one arose.

CanonicalURL is left alone: besides comparison it is the canonical value
handed to mdm.Restrictions and to the Android and iOS Preferences getters,
and normalizing what those return is a separate decision.
2026-09-08 16:32:16 +02:00
Riccardo Manfrin bb4de1d008 [client] Read MDM boolean keys delivered as JSON numbers (#7471)
encoding/json decodes every JSON number into float64, so the policy
values the mobile loaders produce never contain int or int64. GetBool
accepted both of those but not float64, so a managed boolean pushed as
1 or 0 — how some MDM consoles normalise flags — was reported as
unreadable while the key still counted as managed: the policy was not
applied, and the conflict gate rejected both values the user could pick
for that field.

The rejected-float assertion predates the JSON channel. It came with the
registry and plist loaders, where a real number for a flag is a
configuration mistake; on the JSON channel an integer is the only shape
a number can take. GetInt already accepts float64.
2026-09-08 15:06:46 +02:00
Riccardo ManfrinandZoltan Papp e14006ddc1 [client] mobile MDM bridge — iOS + Android setMDMPolicyFetcher entrypoint (#6435)
* MDM Android mobile wiring

* Removes dead code

* Removes static vars

* Now we need to apply MDM in the GetConfig

* You now need to explicitly call these around

* Adds iOS wiring

* Resolve merge conflicts from main

- login.go: keep both new imports (mdm + nbnet + server)
- ios/NetBirdSDK/client.go: additive struct-field merge (mdmLoader + stateMu/connectClient/config)
- setconfig_mdm_test.go: adopt new withMDMPolicy(t, s, policy) signature; fix stray old-signature call in TestSetConfig_MDMAllow_ManagementURLPortNormalized

* Convey MDM overlay config to Debug Bundle output

Aligns to other clients OSes behavior

* Solved conflict in client.go

* Fixup helper withMDMPolicy -> configWithMDM

* Fixup after merge

* Resolve merge conflicts

* [client] Move MDM enforcement logic into a shared Go layer (#7319)

The mobile bridges only carried the policy fetcher, leaving every
enforcement decision to the native apps: the desktop derived its UI
restrictions in the Wails service layer, the daemon kept the conflict
machinery in the server package, and both mobile bridges duplicated the
JSON fetch adapter. Anything the native side had to reimplement was a
place for iOS and Android to drift apart.

Enforcement now lives in client/mdm and is consumed identically by all
three platforms:

- conflicts.go holds the value-aware conflict checks lifted out of the
  daemon, so the same normalization (canonical URLs, PSK sentinel echo)
  applies wherever a config change is validated.
- restrictions.go derives the UI enforcement snapshot from a policy and
  renders it in the JSON shape the desktop frontend already consumes.
  The service-layer types become aliases, keeping one source of truth.
- jsonloader.go replaces the adapter that was copy-pasted into both
  bridges.
- changedetector.go moves change detection off the native side: the
  caller forwards the OS notification and asks whether the managed
  configuration actually changed, instead of diffing dictionaries
  itself.

The mobile bridges gain the enforcement the daemon already had. The
Preferences getters resolve managed keys from the policy, so a naive UI
shows the enforced value; Commit rejects a staged change that diverges
from a managed key; NewAuth resolves the managed management URL before
persisting the config and overlays the policy on it, so a login can no
longer run against a URL the policy forbids. Android's profile
mutations fail closed when disableProfiles is set.

NewAuth takes the fetcher as a required argument rather than keeping a
policy-blind overload: the apps consume this code as a submodule, so a
compile error at the bump is the point. The mobile PSK getter is
replaced by a presence check — the key has no reason to cross the
bridge, and not returning it means the native side needs no redaction
sentinel of its own.

* [client] Resolve the main merge conflicts in the MDM integration

The merge commit was recorded with the conflict markers still in the
tree. Resolve them so the branch builds again:

- client/ios/NetBirdSDK: keep both the mdm and mobile imports, and keep
  the mdmLoader/mdmDetector fields next to main's stateMu documentation.
- client/server/mdm.go: drop the conflict helpers main added locally,
  they already live in the client/mdm package on this branch, and keep
  the new checks main introduced (allowRemoteJobs, enableLocalMetrics,
  localMetricsAddress) as calls into the package-level helpers.
- client/mdm/conflicts.go: add ConflictStringPtr, the presence-aware
  string check main needs for the optional localMetricsAddress field.
- Port the two tests main added over the per-Server loader helper and the
  configWithMDM helper, both of which replaced the package-level policy
  injection this branch removed.

* [client] Reject explicit empty PSK when MDM enforces a pre-shared key

The SetConfig, Login and mobile Commit conflict checks collapsed the PSK
to a plain string, so an explicit empty value was indistinguishable from
an unset field and slipped past the MDM gate, clearing the persisted key.
Carry the optional field as a pointer through ConflictStringPtr, treating
only the redaction sentinel as a no-op echo. ConflictString had no other
callers and is removed.

* [client] Apply MDM overlay on the preloaded iOS config in Run

Run only overlaid the MDM policy when the config was loaded from file,
so the tvOS path fed by SetConfigFromJSON started with unmanaged
settings. Apply the overlay after the config source is selected, as the
other resolution sites already do.

* [client] Gate non-active profile logout behind the MDM profiles switch

The mobile ProfileManager let LogoutProfile clear credentials of any
profile even when disableProfiles was enforced. Follow the daemon's
validateProfileLogout semantics: logging out of the active profile is a
plain logout and stays allowed, logging out of any other profile is
profile management and is rejected under the policy.

* [client] Resolve the managed management URL through the MDM overlay on mobile

NewAuth on Android and iOS replaced the caller URL with the raw policy
value before persisting, so a malformed managed URL failed config
validation and blocked the login instead of being skipped with a warning
like the overlay does. Preferences.GetManagementURL likewise echoed the
raw policy string to the native UI even when the overlay had rejected it.

Follow the daemon: persist the caller URL, overlay the policy on the
resolved config, and report the overlaid ManagementURL as the effective
value.

* [client] Clean up MDM review leftovers

Drop the unused ChangeDetector.Current, point the stale LoadPolicy
comment references at Loader.Load, and move the profileEmail godoc back
above its function.

* [client] Check remote jobs and local metrics keys in the mobile MDM conflict gate

MDMConflicts skipped allowRemoteJobs, enableLocalMetrics and
localMetricsAddress even though the overlay applies all three and the
daemon gate already checks them, so a mobile Commit could persist values
diverging from the enforced policy. Align the list with the daemon.

* [client] Silence the deprecated PreSharedKey lint in the login conflict test

The legacy LoginRequest.PreSharedKey field is deliberately exercised by
the test, matching the nolint already carried by the production path.

* [client] Publish the mobile MDM loader and detector atomically

SetMDMPolicyFetcher wrote the loader and change detector as two plain
fields that Run, the OS-change callback and the restrictions getter read
from other threads without synchronization. Hold both behind a single
atomic pointer so a registration is published as one unit and readers
always observe a matching loader and detector pair; Preferences gets the
same treatment for its loader. Exported signatures are unchanged.

* [client] Report the MDM-overlaid remote jobs value from mobile Preferences

GetRemoteJobsAllowed returned the staged or persisted value even when
the policy manages allowRemoteJobs, so the native settings UI could show
a value the Commit gate would reject. Resolve it through the overlay like
GetManagementURL does.

* [client] Stop persisting the MDM-overlaid config after mobile logins

NewAuth already writes the config through UpdateOrCreateConfig before
the MDM policy is overlaid, and the login itself never mutates the
Config. The post-login WriteOutConfig calls therefore only rewrote the
same file with the enforced ManagementURL and PreSharedKey in it, so a
removed or changed policy kept acting through the persisted values.

* [client] Document that the MDM overlay on Config is not reversible

ApplyMDMPolicy promised that an empty Policy clears a prior overlay, but
applyMDMPolicy only resets the enforcement metadata and the runtime-only
upload URL; the enforced ManagementURL, PreSharedKey and flags stay. Every
lifecycle owner resolves the base Config again before applying, so state
that contract instead of the reversibility that was never implemented.

* [client] Re-resolve the tvOS preloaded config before every MDM overlay

The iOS Client kept the config parsed from SetConfigFromJSON and applied
the MDM overlay onto that same instance on every Run, IsLoginRequired
and DebugBundle, so a key removed from the policy stayed enforced. Store
the JSON instead and parse it per load through one loadConfig path.

Auth serialized the overlaid config from GetConfigJSON, which tvOS then
persisted to UserDefaults and fed back as the preload. Keep the resolved
config as the base, run the login on a JSON round-trip copy with the
overlay, and return the base from GetConfigJSON.

* [client] Serve the MDM-managed management URL without touching the config file on mobile

Preferences.GetManagementURL resolved a managed URL by reading and
overlaying the persisted config, so a corrupt file or the tvOS sandbox
turned an enforced URL into a read error. Return the canonical managed
value directly, the same string BuildRestrictions already hands to the
UI, and only fall back to the staged or persisted value when MDM does
not manage the key.

NewAuth validated the caller-supplied management URL before the overlay
ran, so a malformed or echoed value blocked or persisted under an MDM
policy that already dictates the URL. Ignore the caller value while the
key is managed; the login runs against the overlay either way.

* [client] Align the MDM loader docs with the fetcher precedence and make disableAdvancedView a tristate

NewLoader, PolicyFetcher and the darwin/windows loadPlatform docs claimed
the fetcher is unused on desktop, while every loader returns its values
when one is injected. That precedence is the seam the server tests rely
on across platforms, so the docs now describe it; production desktop
callers still pass nil and keep the registry / plist authoritative.

Fields.DisableAdvancedView collapsed "managed and false" into the same
JSON as "not managed", unlike AllowServerSSH and the daemon's optional
proto field. Carry it as a *bool so the UIs can tell the two apart; the
desktop reflect loop skips pointer fields already, and the mobile
decoders treat null as not managed.

* [client] Clean up MDM review nits

- ResolveConflicts treats a managed key whose ConflictCheck has no Check
  as a conflict instead of dereferencing nil.
- Ticker.Run and ChangeDetector.Changed share policyChanged so the diff
  semantics and the log line cannot drift apart.
- TestLoader_NilFetcherReturnsEmpty skips on windows/darwin, where a nil
  fetcher reads the real registry / plist.
- The profilemanager test loader checks GetInt before GetBool so integer
  keys survive the round trip, and the PSK tests use the exported
  redaction sentinel.

* [client] Fix int policy values coercing to bool in the MDM test helper

withMDMPolicy rebuilt the policy map by trying GetString, then GetBool,
then GetInt. Policy.GetBool accepts native ints (non-zero means true), so
an int-valued key such as wireguardPort round-tripped through the helper as
the bool true and GetInt was never reached. Try GetInt before GetBool, as
the profilemanager helper already does; GetInt does not coerce bools, so
booleans still fall through to GetBool.

No test sets an int key today, so this was latent: the first test to
exercise the wireguardPort conflict gate would have seen ConflictInt64
report a conflict for every value, including a matching one.

---------

Co-authored-by: Zoltan Papp <zoltan.pmail@gmail.com>
2026-09-08 11:53:07 +02:00
Zoltan Papp 15c0a2903d [client] Return the context error when the SSH handshake fails with it (#7426)
* [client] Return the context error when the SSH handshake fails on a context deadline

The handshake mapped the context deadline onto the socket but returned the
raw socket error. Which error surfaces depends on a race between the x/crypto
ssh readLoop and kexLoop goroutines: the kexLoop write fails with i/o timeout
and closes the conn, and the readLoop then reports use of closed network
connection. Callers checking errors.Is(err, context.DeadlineExceeded) never
matched, and TestSSHClient_ContextCancellation flaked on the FreeBSD job.

Handshake now wraps the context error when the context is done or its
deadline has passed. The deadline comparison is needed because the socket
deadline and the context timer fire independently, so ctx.Err() can still be
nil when the deadline-triggered socket error arrives.

* [client] Close the silent test server conn without racing t.Cleanup

The accept goroutine registered the conn close via t.Cleanup, which can run
after the test's cleanup list has already been drained, leaving the accepted
connection open. The goroutine now holds the conn until a cleanup-closed
channel signals the end of the test and closes it on the way out.

* [client] Bind the SSH handshake to the context instead of a socket deadline

Mapping only the context deadline onto the socket left context cancellation
unobserved: an in-flight handshake kept running until the deadline, and the
error classification had to guess whether a raw socket error was caused by
the deadline. Closing the conn from context.AfterFunc covers both deadline
and cancellation, and ctx.Err() is already set by the time the close-induced
error surfaces, so the time-based DeadlineExceeded attribution is no longer
needed. The stop() result guards the window between a successful handshake
and the AfterFunc firing so a closed conn is never handed back as a client.
2026-09-07 15:50:28 +02:00
Brad Ison 76ea72237f [management] Add Agent Network managed proxy to the API spec (#7433)
Defines the cloud-side managed gateway provisioning surface
(POST/GET /api/integrations/agent-network/managed-proxy) and its
response objects so clients consume generated types instead of
hand-written ones. POST is idempotent: 202 when the call starts (or
restarts) provisioning, 200 when a deployment already exists; 409
names an already-assigned endpoint the managed flow does not own and
503 signals temporarily exhausted endpoint allocation.
2026-09-04 17:11:27 +02:00
Zoltan Papp 5cb6b0d33b [client] Assign the Android TUN address as a host prefix (#7414)
Android 16+ local network protection derives the blocked prefixes from the interface address prefix. A /16 address turns the whole overlay into a local network, so apps without ACCESS_LOCAL_NETWORK cannot reach any peer. Pass the address as /32 and /128 and add the overlay networks to the route list that the Android side turns into VPN routes, on both the initial create and the renew path.
2026-09-04 15:10:36 +02:00
Zoltan Papp 825389818c [client] Gather fresh system info on every management sync stream connect (#7409)
* Gather fresh system info on every management sync stream connect

The engine collected the peer meta once at start and reused the same
Info for every Sync stream reconnect, so a mobile network switch that
redials management kept reporting the old local network addresses.
The peer network range posture check was then evaluated against stale
data until the client restarted.

Sync now takes a gatherer that runs at each stream connect. The
gatherer is cheap: GetInfo plus the cached posture check file results,
kept in the new system.InfoSource, which the engine refreshes whenever
the checks list changes. No process enumeration runs on the reconnect
path.

Also fix the management mock server calling itself instead of SyncFunc.

* Evaluate the login response posture checks before the first sync connect

The engine starts with the checks the login response carried, and the
first sync stream request used to send their evaluated file results.
After moving the gather into InfoSource, the stream opened with an empty
cache and the first sync response did not refill it, because its checks
equal the ones the engine already holds. Desktop peers therefore never
reported process or file posture results.

Seed the cache once before the first connect, where the old gather ran,
so a timed out evaluation still falls through to the address-only info.

* Harden the sync info source against nil callbacks and shared slices

A nil getInfo opens the stream without metadata, as a nil sysInfo did
before. The cached posture results are a copy, so the Info returned by
Refresh cannot alias the snapshot later Current calls report. The
exclusion test asserts the remaining address count so it cannot pass
vacuously on a single-address host.

* Retry a posture check refresh that timed out or failed to sync

The checks list was recorded before the gather ran, so once the gather
timed out or SyncMeta failed, the next sync response carrying the same
list matched the recorded one and nothing retried. The peer kept
reporting the previous posture results until the list changed again.

Record the checks only after the meta reached management, so a failed
cycle is repeated on the next sync response.

* Log the skipped posture refresh, let the mock Sync return errors and deflake the reconnect test

* Drop the nil guard around the sync info callback

* Send the refreshed info on the first sync connect instead of gathering it twice
2026-09-04 15:07:01 +02:00
Viktor Liu 7c1253004b [client] Renew the Android TUN only when the routes it carries change (#7396) 2026-09-03 12:22:19 +02:00
Viktor Liu bb233c72b6 [client] Rebuild the overlay listeners when the TUN is renewed (#7397) 2026-09-03 12:22:00 +02:00
Zoltan Papp fbd4730f0b [client] Expose the remote jobs opt-in in the Android and iOS SDK preferences (#7406)
Remote jobs (debug bundle requests from management) are gated behind
Config.RemoteJobsAllowed, which defaults to false and could only be
enabled through the CLI flag or an MDM policy. The mobile SDKs had no
way to set it, so the mobile clients always refused the job.

Add GetRemoteJobsAllowed/SetRemoteJobsAllowed to both mobile
Preferences types, following the existing ServerSSHAllowed accessors,
so the apps can offer a settings toggle for it.
2026-09-03 11:47:32 +02:00
Maxim Egorov b0e03038ed [client] Pick the probe port from the system in Test_freePort (#7404) 2026-09-03 10:03:24 +02:00
Viktor Liu 778b3b3264 [client] Unify peer and route ACL filtering with multi-source rules (#6322)
* Unify peer and route ACL filtering with multi-source peer rules

* Remove partial userspace firewall mode and open foreign chains via a table-less allower

* Snapshot iptables rule maps before persisting state

* Scope userspace firewall wildcard source rules per address family

* Install nftables peer filter and mangle rules in a single transaction

* Share the iptables jump rule spec between install and cleanup

* Fix legacy ACL source wildcard and keep rollback tracking on delete failure

* Fix CI: recognize multi-value port set lookups in tests and correct PeerIP lint suppression

* Fall back to per-prefix filter rules when ipset is unavailable

* Annotate legacy PeerIP usages in ACL tests and fix import formatting

* Keep firewall rule bookkeeping in step with the kernel on replace and teardown

* Release the routing reference when the route manager shuts down

* Keep set references and rule tracking consistent when a routing rule fails
2026-09-03 10:02:50 +02:00
Riccardo Manfrin 7b22d55bf6 [client] Bind the cached SSH JWT to the local caller that obtained it (#7378)
* [client] Bind the cached SSH JWT to the local caller that obtained it

Record the identity that obtained the token and return it only to that
same identity, comparing the account alone: the group set and the
elevation flag describe what a token may do rather than who it belongs
to, and the same user may call once elevated and once not.

A control channel that carries no caller identity gets a miss on read
and stores nothing on write, matching how the other ipcauth consumers
fail closed.

Clear the entry when the session it speaks for ends: logout, down and
profile switch.

* [client] Cover the profile-switch path of the SSH JWT cache

The cache being correct buys nothing if a handler around it forgets to
clear it, and SwitchProfile had no test at all.

Point the profile globals at a temp dir holding a single default profile,
which is the one ActiveProfileState.FilePath resolves without consulting
the current OS user, and call SwitchProfile with no request so neither
the switch itself nor the profile-list event is involved.

* [client] Report the SSH JWT cache in the no-identity startup warning

daemonServerOptions already warns once, at startup, about what a control
channel with no caller identity gives up. Name the SSH JWT cache there
too, on both the TCP and the no-peer-identity-primitive paths.

The per-request logs in cachedJWT and WaitJWTToken drop to Debug: the
condition is expected and handled on such a channel, the caller simply
re-authenticates, and repeating it on every SSH authentication buried the
one message that is actionable.

* [client] Stop the local-metrics manager leaking out of the profile test

localmetrics.NewManager runs a goroutine until its context is done, and
the test handed it context.Background(), so the manager outlived the test
and stayed in the test binary for every case that followed.

* [client] Keep the cached SSH JWT across a down/up cycle

Clearing the cache in cleanupConnection also caught Down, which ends the
connection and not the session: the peer stays enrolled, `up` reconnects
without going back to the IdP, and the token still belongs to the same
NetBird identity. With a long cache TTL that cost the owner a fresh
device-code flow for nothing, since the owner binding is what keeps the
token away from other local accounts.

Clear it on the two paths where the session really ends and the next one
may belong to a different NetBird user: profile logout when the profile
is the active one, and active-profile logout. SwitchProfile already
cleared it on its own.

* [client] Resolve the merge conflict in the profile-logout cleanup

main extracted the inline profile-logout cleanup into
cleanupAfterProfileLogout, which this branch had edited in place to clear
the SSH JWT cache. Take main's helper and move the clear inside it.

The helper returns early when the profile that was deregistered is not
the active one, so the cache is still only cleared when the session that
owns the token actually ends.

* [client] Do not cache an SSH JWT obtained under a session that ended

WaitJWTToken polls the IdP with s.mutex released, and that wait can run
for as long as the user takes in the browser. A logout or a profile
switch in the meantime clears the cache, but the poll then completed and
stored its token anyway, so the entry the next session read belonged to
the previous one.

Give the cache a generation that clear advances. WaitJWTToken takes the generation
before the wait and hands it back to store, which keeps the token only
while the generation still matches.

The two mutexes are distinct, so this was never a data race and the race
detector could not have found it: the window is between two separately
locked sections.

* [client] Make the profile-switch test switch a profile

SwitchProfile with a nil request skips switchProfileIfNeeded, so the test
only covered the no-op path and would have passed with profile-transition
invalidation broken. Create a second profile and name it in the request,
then assert the active profile actually moved before checking the cache.

Also correct the comment on the Down test: the logout handlers do call
cleanupConnection. What changed is that clearing the cache is no longer
one of the things cleanupConnection does.

* [client] Take the SSH JWT cache generation when the flow is created

WaitJWTToken read the generation after validating the device code, but
the flow it belongs to is created earlier, in RequestJWTAuth, and
SwitchProfile does not reset s.oauthAuthFlow. A profile switch between
the two therefore advanced the generation before it was ever read: the
guard compared the new session against itself and let the token through,
which is the case it exists to stop.

Record the generation on the flow when RequestJWTAuth creates it, and
read it from there. The whole span from the request to the IdP answering
now counts as one session for the cache.

* [client] Correct two test comments the clear-on-Down change invalidated

Moving the clear out of cleanupConnection left two comments describing
the old behaviour: newTestServer said cleanupConnection clears the cache,
and the comment above TestJWTCache_ClearDropsTheEntry listed Down among
the callers of clear. Neither is true any more.

* [client] Read the SSH JWT cache generation before the IdP round trip

RequestJWTAuth read the generation where it stored the flow, which is
after RequestAuthInfo has talked to the IdP. A logout or a profile switch
during that call advanced the generation first, so the flow recorded the
new session's value and the later store was accepted: the window moved
rather than closed.

Read it with the config, under the same s.mutex section. SwitchProfile
holds that mutex across its own clear(), so the config and the generation
cannot be torn apart by a switch.
2026-09-02 14:04:09 +02:00
Zoltan Papp c3cf7c0c37 [client] Clarify that metrics ingest X-Peer-ID is not a credential (#7363)
* [client] Clarify that metrics ingest X-Peer-ID is not a credential

The ingest endpoint is intentionally unauthenticated: it accepts telemetry
from peers of both cloud and self-hosted deployments, and for a self-hosted
peer there is no shared trust anchor to authenticate against. The X-Peer-ID
header is a correlation tag whose format check exists to bound InfluxDB tag
cardinality.

Both the function name (validateAuth) and the 401 response implied an
authentication control that was never there, which invites the reading that
the check can be bypassed. Rename it to validatePeerIDFormat and return 400,
matching the other input validation failures in the same handler. Document
the intent in the godoc and the infra README.

No behavioural change for clients: push.go classifies responses by 2xx range
rather than by status code, so 400 and 401 are handled identically.

* [client] Reject metrics ingest bodies whose peer_id tag disagrees with the header

validateTag checked tag names against the per-measurement allowlist but only
bounded the value length, so the peer_id tag was free-form text up to 64 bytes
and could differ from the X-Peer-ID header the request was accepted with.

Tie the two together: the tag value must equal the header value. Since the
header is already checked to be 16 hex characters, this transitively constrains
the tag to the same shape. Every client sends the same value in both places
(metrics.go feeds agentInfo.peerID to both push.SetPeerID and the body tags),
so well-behaved clients are unaffected.

The mismatch is rejected rather than silently overwritten: rewriting the value
would re-serialize caller-controlled text back into line protocol and would
hide misbehaving senders instead of surfacing them. Rejection also matches the
other input validation failures in the same handler, which all return 400.

This narrows the value space of the peer_id tag but does not by itself bound
InfluxDB series cardinality: a sender that puts the same arbitrary 16 hex
characters in both the header and the body still passes. Limiting that needs a
per-source rate limit in front of the service.

* [client] Document what the metrics ingest peer_id check does and does not bound

The README described X-Peer-ID as the correlation tag, but grouping is done by
the peer_id tag in the submitted line protocol: that is what is forwarded to
InfluxDB, while the header only serves as the value each tag is checked against.

It also claimed the format check bounds tag cardinality. It bounds the value
space of the tag, not the number of distinct series, so state that explicitly
and point out that series cardinality has to be limited outside this service.

* [client] Set timeouts on the metrics ingest HTTP server

The server ran on http.ListenAndServe with no timeouts, silenced with a
nolint:gosec for G114. Without ReadHeaderTimeout a client can hold a connection
open by sending headers slowly, and without ReadTimeout or IdleTimeout
connections accumulate on an endpoint that takes unauthenticated requests.

Construct an http.Server with explicit limits instead, which also drops the
nolint. Handler stays nil so the existing DefaultServeMux registrations are
unaffected.

WriteTimeout is deliberately larger than the 10s upstream client timeout: the
response is only written after the forward to InfluxDB completes, so a tighter
value would cut off the server's own valid response.

* Revert "[client] Document what the metrics ingest peer_id check does and does not bound"

This reverts commit 837a5d8dda.

* Revert "[client] Reject metrics ingest bodies whose peer_id tag disagrees with the header"

This reverts commit 91d4f6128.

Tying the body peer_id tag to the X-Peer-ID header assumed the two always agree,
but a profile switch breaks that. UpdateAgentInfo swaps agentInfo.peerID and
calls push.SetPeerID with the new value while leaving the sample buffer alone,
and the peer_id is baked into each buffered line at record time, so samples from
the previous profile ship under the new header.

The consequences compound: validateLineProtocol rejects the whole batch on the
first bad line, so fresh samples are dropped along with the stale ones, and
push.go only resets the buffer after a successful push, so the batch is retried
and fails again. Metrics from that client stay stuck until the old samples age
out of the buffer, up to maxSampleAge (5 days).

Deciding whether the previous profile's unsent samples may be discarded, or
whether the push has to be partitioned per identity, is a product call, so
restore the previous behaviour for now. The header keeps its format check;
the body peer_id tag goes back to being bounded only by maxTagValueLength.

* [client] Stop claiming the metrics ingest peer ID format check bounds tag cardinality

The X-Peer-ID header is never forwarded to InfluxDB; the stored peer_id
tag comes from the request body and is constrained only by the tag
allowlist and the maximum tag value length. Align the README and the
validatePeerIDFormat godoc with the actual behavior after the
header/body match check was reverted.
2026-09-02 12:36:47 +02:00