This extracts the initial refactoring required for #6944. Currently,
`connlib` sends all DNS queries over the same UDP socket as all the p2p
traffic for gateways and relays. In an earlier design of `connlib`, we
already did something similar as we are doing here but using
`hickory_resolver` for the actual DNS resolution.
Instead of depending on hickory, we implement DNS resolution ourselves
by sending a UDP DNS query to the mapped upstream DNS server. There are
no retries, instead, we rely on the original DNS client to retry in case
a packet gets lost on the way.
Modelling recursive DNS queries as explicit events from the
`ClientState` is necessary for implement DNS over TCP and DNS over
HTTPS. In both cases, the query to the upstream server isn't as simple
as emitting a `Transmit`. By modelling the query as an `async fn` within
`Io`, it will be possible to perform them all in one place.
Resolves: #6297.
This brings us one step closer to completing #6140. In Firezone, users
can define custom upstream DNS servers that take priority over
system-defined DNS servers. The IPs of these servers could also be
resources, meaning the DNS queries must be sent through the WireGuard
tunnel to the gateway.
For UDP DNS queries, that is easy because each query is only a single
packet. For TCP DNS queries, we need to have a dedicated TCP-capable DNS
server that parses all incoming queries. If they are required to be
forwarded to the gateway, we then need a TCP-capable DNS client that can
send them to the actual upstream DNS server.
This PR implements such a DNS client. The design is tailored for what we
need in `connlib`: We maintain a permanent TCP connection to each
upstream DNS server and send queries to them. Most likely, users will
only have a handful of DNS servers defined. TCP requires a three-way
handshake before any application data can be sent, maintaining a
connection should therefore greatly improve DNS resolution latency.
DNS resolvers are encouraged to keep TCP connections open but may close
them if they run out of resources. We only re-connect once we have more
queries to send in order to not spam the resolver with connections.
Resolves: #7000.
---------
Signed-off-by: Thomas Eizinger <thomas@eizinger.io>
Closes#7008.
We already signed the GUI exe and the entire MSI package, but when
adding the IPC service we overlooked that one.
This PR:
- Modifies the signing script to accept multiple EXEs
- Modifies the Tauri bundle command to sign both exes
- Updates the changelog
Currently, we emit a single TRACE log for each DNS resource entry that
doesn't match. This is quite spammy and often not needed.
When debugging DNS resources, it is useful to know, which resources we
are matching against. To balance this, we now build a list of all DNS
resource domain patterns that we have and log a single "No resources
matched" log with that list in case none match.
Why:
* Without some type of notification, users do not realize that new
Gateway versions have been released and thus do not seem to be upgrading
their deployed Gateways.
This splits out the actual DNS server from #6944 into a separate crate.
At present, it only contains a DNS server. Later, we will likely add a
DNS client to it as well because the proptests and connlib itself will
need a user-space DNS TCP client.
The implementation uses `smoltcp` but that is entirely encapsulated. The
`Server` struct exposes only a high-level interface for
- feeding inbound packets as well as retrieving outbound packets
- retrieving parsed DNS queries and sending DNS responses
Related: #6140.
Bumps AGP to 8.7.0 to fix the following error with recent versions of
Android Studio / gradle:
```
Caused by: java.io.IOException: Cannot run program "rustc" (in directory "/Users/jamil/Developer/firezone/firezone/kotlin/android/app"): error=2, No such file or directory
at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:25)
... 7 more
Caused by: java.io.IOException: error=2, No such file or directory
```
Also removes dead code and enables verbose output to make it easier to
catch problems like this in the future.
Why:
* A handful of 'show' pages were throwing errors for entities created
using the API. The reason was due to the fact that the
`created_by_actor` was not being preloaded and when the details on the
show page were being rendered. This commit updates the various pages to
preload the `created_by_actor` to allow for both API created entities
and UI created entities.
Bumps androidx.navigation:navigation-safe-args-gradle-plugin from 2.8.1
to 2.8.2.
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Bumps androidx.navigation:navigation-testing from 2.8.1 to 2.8.2.
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Bumps com.google.firebase:firebase-bom from 33.3.0 to 33.4.0.
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With the introduction of `firezone-logging`, we provide a default filter
that silences irrelevant crates:
17ea827c03/rust/logging/src/lib.rs (L32-L40).
Thus, it is safe to just set the default filter to `info` for production
and `debug` for development.
Closes#6989
- The tunnel daemon (IPC service) now explicitly sets the ID file's
perms to 0o640, even if the file already exists.
- The GUI error is now non-fatal. If the file can't be read, we just
won't get the device ID in Sentry.
- More specific error message when the GUI fails to read the ID file
We attempted to set the tunnel daemon's umask, but this caused the smoke
tests to fail. Fixing the regression is more urgent than getting the
smoke tests to match local debugging.
---------
Co-authored-by: _ <ReactorScram@users.noreply.github.com>
This has been a long-standing issue.
The base PR fixes the issue for Firefox, and apparently all other
browsers will _not_ change your DNS server, only opportunistically
enable DoH if it finds your current servers to support it.
Bumps the navigation group in /kotlin/android with 2 updates:
androidx.navigation:navigation-fragment-ktx and
androidx.navigation:navigation-ui-ktx.
Updates `androidx.navigation:navigation-fragment-ktx` from 2.8.1 to
2.8.2
Updates `androidx.navigation:navigation-ui-ktx` from 2.8.1 to 2.8.2
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Bumps the npm_and_yarn group in /website with 1 update:
[micromatch](https://github.com/micromatch/micromatch).
Updates `micromatch` from 4.0.7 to 4.0.8
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With the latest version of `proptest-state-machine`, we no longer need
to use their traits because `Sequential::new` is now exposed. This makes
the overall things less magical because there is less indirection.
This incorporates the feedback from #6939 after a discussion with
@conectado. We agreed that the protocol should be more event-based,
where each message has its own event type. Events MAY appear in pairs or
other cardinality combinations, meaning semantically they could be seen
as requests and responses. In general though, due to the unreliable
nature of IP, it is better to view them as events. Events are typically
designed to be idempotent which is important to make this protocol work.
Using events also means it is not as easy to fall into the "trap" of
modelling requests / responses on the control protocol level.
Also allows windows to be closed and re-opened. Tauri behaved exactly
the same way, if you "close" a window it completely destroys it and
panics if you ask to show it again.
---------
Signed-off-by: Reactor Scram <ReactorScram@users.noreply.github.com>
Since we've added these tests, `connlib`'s test coverage has increased
significantly to the point where we don't need all of them anymore.
Especially pretty much everything in regards to relays is unnecessary to
be tested using docker.
These integration tests are sometimes flaky due to docker not starting
or images failing to pull. Thus, having fewer of them is better because
it increases CI reliability. Also, there are only so many jobs that
GitHub will execute in parallel so having less jobs is better for that
too.
Resolves: #6451.
---------
Signed-off-by: Thomas Eizinger <thomas@eizinger.io>
- Updated revoke button colors and icons.
- Updated the 'Created By' to use a helper function to get an email
address rather than using the provider_identifier which may be a random
string depending on the type of provider the identity was created under.
- Added a link to the actor that created the API token
### Screenshot of updated view
<img width="1168" alt="Screenshot 2024-10-07 at 1 11 43 PM"
src="https://github.com/user-attachments/assets/80444815-f045-49db-b570-dc9dc58c33d2">
Closes#6269
In #6909, we introduced a regression that wasn't caught by CI.
Previously, we were using a different function to resolve the domain
name of the portal. That function took care of handling the case where
the host didn't have a port number.
In the docker-compose file we always specify a port number, therefore
the case of host-only doesn't get tested.
This currently prevents all clients from signing in to staging & prod.
To correctly handle overlapping CIDR resources, we need to recompute
which ones are active. The `RoamClient` transition was missing that
despite the system-under-test actually doing that bit.
Adding the necessary function call fixes the two regression seeds
detected in CI.
Resolves: #6924.
Do we want to track 401s in sentry? If we see a lot of them, something
is likely wrong but I guess there is some level of 401s that users will
just run into.
Is there a way of marking these as "might not be a really bad error"?
---------
Co-authored-by: Not Applicable <ReactorScram@users.noreply.github.com>
At present, `connlib` utilises the portal as a signalling layer for any
kind of control message that needs to be exchanged between clients and
gateways. For anything regard to connectivity, this is crucial: Before
we have a direct connection to the gateway, we don't really have a
choice other than using the portal as a "relay" to e.g. exchange address
candidates for ICE.
However, once a direct connection has been established, exchanging
information directly with the gateway is faster and removes the portal
as a potential point of failure for the data plane.
For DNS resources, `connlib` intercepts all DNS requests on the client
and assigns its own IPs within the CG-NAT range to all domains that are
configured as resources. Thus, all packets targeting DNS resources will
have one of these IPs set as their destination. The gateway needs to
learn about all the IPs that have been assigned to a certain domain by
the client and perform NAT. We call this concept "DNS resource NAT".
Currently, the domain + the assigned IPs are sent together with the
`allow_access` or `request_connection` message via the portal. The new
control protocol defined in #6732 purposely excludes this information
and only authorises traffic to the entire resource which could also be a
wildcard-DNS resource.
To exchange the assigned IPs for a certain domain with the gateway, we
introduce our own p2p control protocol built on top of IP. All control
protocol messages are sent through the tunnel and thus encrypted at all
times. They are differentiated from regular application traffic as
follows:
- IP src is set to the unspecified IPv6 address (`::`)
- IP dst is set to the unspecified IPv6 address (`::`)
- IP protocol is set to reserved (`0xFF`)
The combination of all three should never appear as regular traffic.
To ensure forwards-compatibility, the control protocol utilises a fixed
8-byte header where the first byte denotes the message kind. In this
current design, there is no concept of a request or response in the
wire-format. Each message is unidirectional and the fact that the two
messages we define in here appear in tandem is purely by convention. We
use the IPv6 payload length to determine the total length of the packet.
The payloads are JSON-encoded. Message types are free to chose whichever
encoding they'd like.
This protocol is sent through the WireGuard tunnel, meaning we are
effectively limited by our device MTU of 1280, otherwise we'd have to
implement fragmentation. For the messages of setting up the DNS resource
NAT, we are below this limit:
- UUIDs are 16 bytes
- Domain names are at most 255 bytes
- IPv6 addresses are 16 bytes * 4
- IPv4 addressers are 4 bytes * 4
Including the JSON serialisation overhead, this results in a total
maximum payload size of 402 bytes, which is well below our MTU.
Finally, another thing to consider here is that IP is unreliable,
meaning each use of this protocol needs to make sure that:
- It is resilient against message re-ordering
- It is resilient against packet loss
The details of how this is ensured for setting up the DNS resource NAT
is left to #6732.
One of the key differences of the new control protocol designed in #6461
is that creating new connections is idempotent. We achieve this by
having the portal generate the ICE credentials and the preshared-key for
the WireGuard tunnel. As long as the ICE credentials don't change, we
don't need to make a new connection.
For `snownet`, this means we are deprecating the previous APIs for
making connections. The client-side APIs will have to stay around until
we merge the client-part of the new control protocol. The server-side
APIs will have to stay around until we remove backwards-compatibility
from the gateway.
As part of #6732, we will be using the tunnel for the p2p control
protocol to setup the DNS resource NAT on the gateway. These messages
will be immediately queued after creating the connection, before ICE is
finished. In order to avoid additional retries within `firezone_tunnel`,
we directly attempt to encapsulate these packets.
`boringtun` internally has a buffer for these because prior to having a
WireGuard session, we don't actually have the necessary keys to encrypt
a packet. Thus, the packet passed here won't actually end up in the
referenced buffer of the `Connecting` state. Instead, if we haven't
already initiated a WireGuard handshake, attempting to encapsulate a
packet will trigger a WireGuard handshake initiation and _that_ is the
packet we need to buffer.
Dropping this packet would require us to wait until `boringtun`
retransmits it as part of the handshake timeout, causing an unnecessary
delay in the connection setup.
We call the `add_ips_with_resource` function with a list of `IpAddr` or
`IpNetwork`s. To make this more ergonomic for the caller, we can accept
an iterator that converts the items on the fly.
The `len` specified in the constructor of `IpPacket` is user-provided.
Technically, that one can be longer than the actual packet. To make sure
we only ever pass out the precise payload of the IP packet, we read the
length from the IP header and cut the slice at the specified length.
For #6461, we will build a control protocol on top of IP that runs
through the WireGuard tunnel. Reading the exact length of the payload is
important for that.
To reduce the TTFB, we immediately force a WireGuard handshake as soon
as ICE completes. Currently, both the client and the gateway do this
which is somewhat counter-productive as there can only be one active
session.
With this patch, only the client will force a new WireGuard handshake as
soon as ICE completes.
With the new control protocol specified in #6461, the client will no
longer initiate new connections. Instead, the credentials are generated
deterministically by the portal based on the gateway's and the client's
public key. For as long as they use the same public key, they also have
the same in-memory state which makes creating connections idempotent.
What we didn't consider in the new design at first is that when clients
roam, they discard all connections but keep the same private key. As a
result, the portal would generate the same ICE credentials which means
the gateway thinks it can reuse the existing connection when new flows
get authorized. The client however discarded all connections (and
rotated its ports and maybe IPs), meaning the previous candidates sent
to the gateway are no longer valid and connectivity fails.
We fix this by also rotating the private keys upon reset. Rotating the
keys itself isn't enough, we also need to propagate the new public key
all the way "over" to the phoenix channel component which lives
separately from connlib's data plane.
To achieve this, we change `PhoenixChannel` to now start in the
"disconnected" state and require an explicit `connect` call. In
addition, the `LoginUrl` constructed by various components now acts
merely as a "prototype", which may require additional data to construct
a fully valid URL. In the case of client and gateway, this is the public
key of the `Node`. This additional parameter needs to be passed to
`PhoenixChannel` in the `connect` call, thus forming a type-safe
contract that ensures we never attempt to connect without providing a
public key.
For the relay, this doesn't apply.
Lastly, this allows us to tidy up the code a bit by:
a) generating the `Node`'s private key from the existing RNG
b) removing `ConnectArgs` which only had two members left
Related: #6461.
Related: #6732.
This makes it easier to ignore random issues from my dev system.
Also added OS tag (`linux` or `windows`) since that doesn't seem to be a
default for Sentry.
```[tasklist]
- [ ] Bikeshed the name `firezone_id` since it'll be hard to change later
```
<img width="367" alt="image"
src="https://github.com/user-attachments/assets/2e936aea-5c36-4208-965a-c578ff8407b7">
Refs #6927
This PR creates a GTK+ event loop, a blank window, and the tray menu. It
connects to the IPC service, you can sign in and everything, but the
About window, Settings window, and Welcome window aren't implemented.
We build a deb package in CI but it isn't pushed to the draft releases
in CD yet.
Pros over Iced:
- More mature
- Easy integration with `tray-icon`
- Small binaries (< 1 MB for this example)
Cons:
- GTK 3.x is abandoned as of March. GTK 4 isn't packaged for Ubuntu
20.04.
- Widgets might be hard to use
- Hard to set up on Windows, only using this for Linux for now
---------
Signed-off-by: Reactor Scram <ReactorScram@users.noreply.github.com>
Co-authored-by: Thomas Eizinger <thomas@eizinger.io>
