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main
...
multi-port
22 changed files with 391 additions and 704 deletions
12
Dockerfile
12
Dockerfile
|
|
@ -1,12 +0,0 @@
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FROM golang:alpine AS builder
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WORKDIR /go/src/jrouter
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COPY . .
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RUN --mount=type=cache,target=/root/.cache/go-build \
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--mount=type=cache,target=/go/pkg/mod \
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apk add build-base libpcap-dev && \
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CGO_ENABLED=1 CGO_FLAGS='-static' go build -v -o jrouter .
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FROM alpine:latest
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COPY --from=builder /go/src/jrouter/jrouter /usr/bin/
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RUN apk add libpcap
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ENTRYPOINT ["/usr/bin/jrouter", "-config", "/etc/jrouter/jrouter.yaml"]
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80
README.md
80
README.md
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@ -11,25 +11,21 @@ Home-grown alternative implementation of Apple Internet Router 3.0
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TashTalk could be a stretch goal, if I can acquire one!
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## Things that used to be caveats
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* Previously it would listen for all EtherTalk traffic, regardless of destination.
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Now it doesn't do that, which should help it co-exist with other routers on
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the same host.
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* You can configure an alternate Ethernet address if you are reusing the same
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network interface for multiple different EtherTalk software.
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* In addition to the configured EtherTalk network and zone, it now learns routes
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and zones from other EtherTalk routers, and should share them across AURP.
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* There's a status server. Browse to http://\[your router\]:9459/status to see
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information about the state of jrouter.
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## Caveats
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Things I plan to fix Real Soon Now:
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* ✅ Fixed ~~It currently listens to all AppleTalk and AARP traffic on the EtherTalk port.
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This might not play well with other AppleTalk software, e.g. netatalk.~~
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* ✅ Fixed ~~Also it currently uses the default Ethernet address for the interface for
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sending packets. I plan to add the ability to configure a different address.~~
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You can now configure a different Ethernet address for the EtherTalk
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interface. I haven't tested it with netatalk or tashrouter on the same
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host, but I think using a distinct Ethernet address would help them coexist.
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* It currently ignores other AppleTalk routers on the EtherTalk side. This is
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the next main thing to implement to make it work with e.g. netatalk.
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* Some packet types need splitting to fit within limits. Some of these aren't
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implemented yet (mainly encapsulated). The unimplemented ones seem unlikely to
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hit those limits unless you are running a lot of routers or zones locally.
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implemented yet (mainly encapsulated).
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* I plan to add a Prometheus metrics endpoint and at least add log levels /
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verbosity config.
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* The AURP implementation is mostly there, but not fully complete. The main
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@ -37,7 +33,7 @@ Things I plan to fix Real Soon Now:
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Things I plan to fix At Some Point:
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* For expediency I made it act as a _seed router_. At some point I might add
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* For expediency I made it act as a _seed router_. At some point I might add
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"soft seed" functionality.
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@ -49,50 +45,16 @@ First, set up a `jrouter.yaml` (use the one in this repo as an example).
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TODO: explain the configuration file
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### Building and running directly
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Building and running:
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1. Install [Go](https://go.dev/dl).
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2. Run these commands (for Debian-variety Linuxen, e.g. Ubuntu, Raspbian, Mint...):
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```shell
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sudo apt install git build-essential libpcap-dev
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go install drjosh.dev/jrouter@latest
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sudo setcap 'CAP_NET_BIND_SERVICE=ep CAP_NET_RAW=ep' ~/go/bin/jrouter
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```
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3. Configure `jrouter.yaml`
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4. To run:
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```shell
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~/go/bin/jrouter
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```
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```shell
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sudo apt install libpcap-dev
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go install gitea.drjosh.dev/josh/jrouter@latest
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sudo setcap 'CAP_NET_BIND_SERVICE=ep CAP_NET_RAW=ep' ~/go/bin/jrouter
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~/go/bin/jrouter
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```
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Notes:
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* `NET_BIND_SERVICE` is needed to bind UDP port 387 (for talking between AIRs)
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* `NET_RAW` is needed for EtherTalk
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* `git` is needed for `go install` to fetch the module
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* `build-essential` and`libpcap-dev` are needed for [gopacket](https://github.com/google/gopacket), which uses [CGo](https://pkg.go.dev/cmd/cgo)
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* `NET_BIND_SERVICE` is needed for `jrouter` to bind UDP port 387 (for talking between AIRs)
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* `NET_RAW` is needed for `jrouter` to listen for and send EtherTalk packets
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TODO: instructions for non-Linux / non-Debian-like machines
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### With Docker
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1. Clone the repo and `cd` into it.
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2. `docker build -t jrouter .`
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3. Example `docker run` command:
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```shell
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docker run \
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-v ./cfg:/etc/jrouter \
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--cap-add NET_RAW \
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--net host \
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--name jrouter \
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jrouter
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```
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Notes:
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* Put `jrouter.yaml` inside a `cfg` directory (or some path of your choice and bind-mount it at `/etc/jrouter`) for it to find the config file.
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* `--cap-add NET_RAW` and `--net host` is needed for EtherTalk access to the network interface.
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* By using `--net host`, the default AURP port (387) will be bound without `-p`.
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## Bug reports? Feature requests? Complaints? Praise?
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You can contact me on the Fediverse at @DrJosh9000@cloudisland.nz, or email me at josh.deprez@gmail.com.
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TODO: instructions for non-Linux machines
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|
|
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@ -21,7 +21,7 @@ import (
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"encoding/binary"
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"fmt"
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"drjosh.dev/jrouter/atalk"
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"gitea.drjosh.dev/josh/jrouter/atalk"
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)
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const (
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|
|
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@ -21,8 +21,8 @@ import (
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"encoding/binary"
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"fmt"
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"drjosh.dev/jrouter/atalk"
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"drjosh.dev/jrouter/atalk/atp"
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"gitea.drjosh.dev/josh/jrouter/atalk"
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"gitea.drjosh.dev/josh/jrouter/atalk/atp"
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)
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type GetZonesPacket struct {
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|
|
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@ -19,7 +19,7 @@ package zip
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import (
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"testing"
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"drjosh.dev/jrouter/atalk/atp"
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"gitea.drjosh.dev/josh/jrouter/atalk/atp"
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)
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func FuzzUnmarshalPacket(f *testing.F) {
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|
|
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|
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@ -173,12 +173,9 @@ func (e EventTuples) WriteTo(w io.Writer) (int64, error) {
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}
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func parseEventTuples(p []byte) (EventTuples, error) {
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// Event tuples can be 1, 4, or 6 bytes long. But the only type of length 1
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// is the Null event type sent to probe whether or not the data receiver is
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// still listening. If that's present there probably aren't any other
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// tuples. Hence len(p)/4 (rounded up) is a reasonable estimate of max tuple
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// count.
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e := make(EventTuples, 0, (len(p)+3)/4)
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// Each event tuple is at least 4 bytes, so we need to store at most
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// len(p)/4 of them.
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e := make(EventTuples, 0, len(p)/4)
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for len(p) > 0 {
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et, nextp, err := parseEventTuple(p)
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if err != nil {
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|
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@ -201,10 +198,6 @@ type EventTuple struct {
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func (et *EventTuple) WriteTo(w io.Writer) (int64, error) {
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a := acc(w)
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a.write8(uint8(et.EventCode))
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if et.EventCode == EventCodeNull {
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// null tuple
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return a.ret()
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}
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a.write16(uint16(et.RangeStart))
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if !et.Extended {
|
||||
// non-extended tuple
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|
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@ -218,18 +211,12 @@ func (et *EventTuple) WriteTo(w io.Writer) (int64, error) {
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|||
}
|
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|
||||
func parseEventTuple(p []byte) (EventTuple, []byte, error) {
|
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if len(p) < 1 {
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return EventTuple{}, p, fmt.Errorf("insufficient input length %d for any network event tuple", len(p))
|
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if len(p) < 4 {
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return EventTuple{}, p, fmt.Errorf("insufficient input length %d for network event tuple", len(p))
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}
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|
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var et EventTuple
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et.EventCode = EventCode(p[0])
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||||
if et.EventCode == EventCodeNull {
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return et, p[1:], nil
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||||
}
|
||||
if len(p) < 4 {
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return EventTuple{}, p, fmt.Errorf("insufficient input length %d for non-Null network event tuple", len(p))
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||||
}
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et.RangeStart = ddp.Network(binary.BigEndian.Uint16(p[1:3]))
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et.RangeEnd = et.RangeStart
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et.Distance = p[3]
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||||
|
|
|
|||
10
go.mod
10
go.mod
|
|
@ -1,12 +1,14 @@
|
|||
module drjosh.dev/jrouter
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||||
module gitea.drjosh.dev/josh/jrouter
|
||||
|
||||
go 1.22.0
|
||||
|
||||
require (
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||||
github.com/google/go-cmp v0.6.0
|
||||
github.com/google/gopacket v1.1.19
|
||||
github.com/sfiera/multitalk v0.2.0
|
||||
gopkg.in/yaml.v3 v3.0.1
|
||||
)
|
||||
|
||||
require golang.org/x/sys v0.5.0 // indirect
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require (
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||||
github.com/google/gopacket v1.1.19 // indirect
|
||||
github.com/sfiera/multitalk v0.2.0 // indirect
|
||||
golang.org/x/sys v0.5.0 // indirect
|
||||
)
|
||||
|
|
|
|||
10
go.sum
10
go.sum
|
|
@ -1,32 +1,24 @@
|
|||
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
|
||||
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
|
||||
github.com/google/gopacket v1.1.19 h1:ves8RnFZPGiFnTS0uPQStjwru6uO6h+nlr9j6fL7kF8=
|
||||
github.com/google/gopacket v1.1.19/go.mod h1:iJ8V8n6KS+z2U1A8pUwu8bW5SyEMkXJB8Yo/Vo+TKTo=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/sfiera/multitalk v0.2.0 h1:FLLw7L6yNUTOdjMk2EgKnOwMKeu++t5zinv5qpTC2JM=
|
||||
github.com/sfiera/multitalk v0.2.0/go.mod h1:jGkgjgiyfuRMNKwfSjo/xR6b9nd10XF4smQAtApXFHc=
|
||||
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
|
||||
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
|
||||
golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
|
||||
golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
|
||||
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.7.0 h1:rJrUqqhjsgNp7KqAIc25s9pZnjU7TUcSY7HcVZjdn1g=
|
||||
golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
|
||||
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI=
|
||||
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
|
||||
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
|
||||
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
|
||||
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
|
|
|
|||
91
main.go
91
main.go
|
|
@ -30,14 +30,15 @@ import (
|
|||
"os"
|
||||
"os/signal"
|
||||
"regexp"
|
||||
"runtime/debug"
|
||||
"slices"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"drjosh.dev/jrouter/aurp"
|
||||
"drjosh.dev/jrouter/router"
|
||||
"drjosh.dev/jrouter/status"
|
||||
"gitea.drjosh.dev/josh/jrouter/aurp"
|
||||
"gitea.drjosh.dev/josh/jrouter/router"
|
||||
"gitea.drjosh.dev/josh/jrouter/status"
|
||||
|
||||
"github.com/google/gopacket/pcap"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
|
|
@ -49,7 +50,6 @@ const routingTableTemplate = `
|
|||
<thead><tr>
|
||||
<th>Network range</th>
|
||||
<th>Extended?</th>
|
||||
<th>Zone names</th>
|
||||
<th>Distance</th>
|
||||
<th>Last seen</th>
|
||||
<th>Port</th>
|
||||
|
|
@ -58,8 +58,7 @@ const routingTableTemplate = `
|
|||
{{range $route := . }}
|
||||
<tr>
|
||||
<td>{{$route.NetStart}}{{if not (eq $route.NetStart $route.NetEnd)}} - {{$route.NetEnd}}{{end}}</td>
|
||||
<td>{{if $route.Extended}}✅{{else}}-{{end}}</td>
|
||||
<td>{{range $route.ZoneNames.ToSlice}}{{.}}<br>{{end}}</td>
|
||||
<td>{{if $route.Extended}}✅{{else}}❌{{end}}</td>
|
||||
<td>{{$route.Distance}}</td>
|
||||
<td>{{$route.LastSeenAgo}}</td>
|
||||
<td>
|
||||
|
|
@ -79,6 +78,27 @@ const routingTableTemplate = `
|
|||
</table>
|
||||
`
|
||||
|
||||
const zoneTableTemplate = `
|
||||
<table>
|
||||
<thead><tr>
|
||||
<th>Network</th>
|
||||
<th>Name</th>
|
||||
<th>Local Port</th>
|
||||
<th>Last seen</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
{{range $zone := . }}
|
||||
<tr>
|
||||
<td>{{$zone.Network}}</td>
|
||||
<td>{{$zone.Name}}</td>
|
||||
<td>{{with $zone.LocalPort}}{{.Device}}{{else}}-{{end}}</td>
|
||||
<td>{{$zone.LastSeenAgo}}</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
`
|
||||
|
||||
const peerTableTemplate = `
|
||||
<table>
|
||||
<thead><tr>
|
||||
|
|
@ -86,11 +106,6 @@ const peerTableTemplate = `
|
|||
<th>Remote addr</th>
|
||||
<th>Receiver state</th>
|
||||
<th>Sender state</th>
|
||||
<th>Last heard from</th>
|
||||
<th>Last reconnect</th>
|
||||
<th>Last update</th>
|
||||
<th>Last send</th>
|
||||
<th>Send retries</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
{{range $peer := . }}
|
||||
|
|
@ -99,11 +114,6 @@ const peerTableTemplate = `
|
|||
<td>{{$peer.RemoteAddr}}</td>
|
||||
<td>{{$peer.ReceiverState}}</td>
|
||||
<td>{{$peer.SenderState}}</td>
|
||||
<td>{{$peer.LastHeardFromAgo}}</td>
|
||||
<td>{{$peer.LastReconnectAgo}}</td>
|
||||
<td>{{$peer.LastUpdateAgo}}</td>
|
||||
<td>{{$peer.LastSendAgo}}</td>
|
||||
<td>{{$peer.SendRetries}}</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
|
|
@ -116,9 +126,7 @@ var configFilePath = flag.String("config", "jrouter.yaml", "Path to configuratio
|
|||
|
||||
func main() {
|
||||
// For some reason it occasionally panics and the panics have no traceback?
|
||||
// This didn't help:
|
||||
// debug.SetTraceback("all")
|
||||
// I think it's calling recover in a defer too broadly.
|
||||
debug.SetTraceback("all")
|
||||
|
||||
flag.Parse()
|
||||
log.Println("jrouter")
|
||||
|
|
@ -212,6 +220,15 @@ func main() {
|
|||
return rs, nil
|
||||
})
|
||||
|
||||
zones := router.NewZoneTable()
|
||||
status.AddItem(ctx, "Zone table", zoneTableTemplate, func(context.Context) (any, error) {
|
||||
zs := zones.Dump()
|
||||
slices.SortFunc(zs, func(za, zb router.Zone) int {
|
||||
return cmp.Compare(za.Name, zb.Name)
|
||||
})
|
||||
return zs, nil
|
||||
})
|
||||
|
||||
// -------------------------------- Peers ---------------------------------
|
||||
var peersMu sync.Mutex
|
||||
peers := make(map[udpAddr]*router.AURPPeer)
|
||||
|
|
@ -298,7 +315,20 @@ func main() {
|
|||
continue
|
||||
}
|
||||
|
||||
peer := router.NewAURPPeer(routes, ln, peerStr, raddr, localDI, nil, nextConnID)
|
||||
peer := &router.AURPPeer{
|
||||
Config: cfg,
|
||||
Transport: &aurp.Transport{
|
||||
LocalDI: localDI,
|
||||
RemoteDI: aurp.IPDomainIdentifier(raddr.IP),
|
||||
LocalConnID: nextConnID,
|
||||
},
|
||||
UDPConn: ln,
|
||||
ConfiguredAddr: peerStr,
|
||||
RemoteAddr: raddr,
|
||||
ReceiveCh: make(chan aurp.Packet, 1024),
|
||||
RoutingTable: routes,
|
||||
ZoneTable: zones,
|
||||
}
|
||||
aurp.Inc(&nextConnID)
|
||||
peersMu.Lock()
|
||||
peers[udpAddrFromNet(raddr)] = peer
|
||||
|
|
@ -314,7 +344,7 @@ func main() {
|
|||
rooter := &router.Router{
|
||||
Config: cfg,
|
||||
RouteTable: routes,
|
||||
// ZoneTable: zones,
|
||||
ZoneTable: zones,
|
||||
}
|
||||
|
||||
etherTalkPort := &router.EtherTalkPort{
|
||||
|
|
@ -323,13 +353,16 @@ func main() {
|
|||
NetStart: cfg.EtherTalk.NetStart,
|
||||
NetEnd: cfg.EtherTalk.NetEnd,
|
||||
DefaultZoneName: cfg.EtherTalk.ZoneName,
|
||||
AvailableZones: router.SetFromSlice([]string{cfg.EtherTalk.ZoneName}),
|
||||
AvailableZones: []string{cfg.EtherTalk.ZoneName},
|
||||
PcapHandle: pcapHandle,
|
||||
AARPMachine: aarpMachine,
|
||||
Router: rooter,
|
||||
}
|
||||
rooter.Ports = append(rooter.Ports, etherTalkPort)
|
||||
routes.InsertEtherTalkDirect(etherTalkPort)
|
||||
for _, az := range etherTalkPort.AvailableZones {
|
||||
zones.Upsert(etherTalkPort.NetStart, az, etherTalkPort)
|
||||
}
|
||||
|
||||
// --------------------------------- RTMP ---------------------------------
|
||||
go etherTalkPort.RunRTMP(ctx)
|
||||
|
|
@ -394,7 +427,19 @@ func main() {
|
|||
continue
|
||||
}
|
||||
// New peer!
|
||||
pr = router.NewAURPPeer(routes, ln, "", raddr, localDI, dh.SourceDI, nextConnID)
|
||||
pr = &router.AURPPeer{
|
||||
Config: cfg,
|
||||
Transport: &aurp.Transport{
|
||||
LocalDI: localDI,
|
||||
RemoteDI: dh.SourceDI, // platinum rule
|
||||
LocalConnID: nextConnID,
|
||||
},
|
||||
UDPConn: ln,
|
||||
RemoteAddr: raddr,
|
||||
ReceiveCh: make(chan aurp.Packet, 1024),
|
||||
RoutingTable: routes,
|
||||
ZoneTable: zones,
|
||||
}
|
||||
aurp.Inc(&nextConnID)
|
||||
peers[ra] = pr
|
||||
goPeerHandler(pr)
|
||||
|
|
|
|||
|
|
@ -24,7 +24,7 @@ import (
|
|||
"sync"
|
||||
"time"
|
||||
|
||||
"drjosh.dev/jrouter/status"
|
||||
"gitea.drjosh.dev/josh/jrouter/status"
|
||||
"github.com/google/gopacket/pcap"
|
||||
"github.com/sfiera/multitalk/pkg/aarp"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
|
|
@ -37,8 +37,6 @@ const (
|
|||
maxAMTEntryAge = 30 * time.Second
|
||||
aarpRequestRetransmit = 1 * time.Second
|
||||
aarpRequestTimeout = 10 * time.Second
|
||||
|
||||
aarpBodyLength = 28 // bytes
|
||||
)
|
||||
|
||||
const aarpStatusTemplate = `
|
||||
|
|
@ -183,17 +181,8 @@ func (a *AARPMachine) Run(ctx context.Context) error {
|
|||
a.incomingCh = nil
|
||||
}
|
||||
|
||||
// sfiera/multitalk will return an "excess data" error if the
|
||||
// payload is too big. Most traffic I've seen locally does not have
|
||||
// this problem, but I've seen one report with some junk trailing
|
||||
// data on AARP packets.
|
||||
payload := ethFrame.Payload
|
||||
if len(payload) > aarpBodyLength {
|
||||
payload = payload[:aarpBodyLength]
|
||||
}
|
||||
|
||||
var aapkt aarp.Packet
|
||||
if err := aarp.Unmarshal(payload, &aapkt); err != nil {
|
||||
if err := aarp.Unmarshal(ethFrame.Payload, &aapkt); err != nil {
|
||||
log.Printf("Couldn't unmarshal AARP packet: %v", err)
|
||||
continue
|
||||
}
|
||||
|
|
@ -337,9 +326,6 @@ func (a *AARPMachine) heyThatsMe(targ aarp.AddrPair) error {
|
|||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(respFrameRaw) < 64 {
|
||||
respFrameRaw = append(respFrameRaw, make([]byte, 64-len(respFrameRaw))...)
|
||||
}
|
||||
return a.pcapHandle.WritePacketData(respFrameRaw)
|
||||
}
|
||||
|
||||
|
|
@ -353,9 +339,6 @@ func (a *AARPMachine) probe() error {
|
|||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(probeFrameRaw) < 64 {
|
||||
probeFrameRaw = append(probeFrameRaw, make([]byte, 64-len(probeFrameRaw))...)
|
||||
}
|
||||
return a.pcapHandle.WritePacketData(probeFrameRaw)
|
||||
}
|
||||
|
||||
|
|
@ -369,9 +352,6 @@ func (a *AARPMachine) request(ddpAddr ddp.Addr) error {
|
|||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(reqFrameRaw) < 64 {
|
||||
reqFrameRaw = append(reqFrameRaw, make([]byte, 64-len(reqFrameRaw))...)
|
||||
}
|
||||
return a.pcapHandle.WritePacketData(reqFrameRaw)
|
||||
}
|
||||
|
||||
|
|
@ -398,7 +378,10 @@ func (e AMTEntry) Valid() bool {
|
|||
// LastUpdatedAgo is a friendly string reporting how long ago the entry was
|
||||
// updated/resolved.
|
||||
func (e AMTEntry) LastUpdatedAgo() string {
|
||||
return ago(e.LastUpdated)
|
||||
if e.LastUpdated.IsZero() {
|
||||
return "never"
|
||||
}
|
||||
return fmt.Sprintf("%v ago", time.Since(e.LastUpdated).Truncate(time.Millisecond))
|
||||
}
|
||||
|
||||
// addressMappingTable implements a concurrent-safe Address Mapping Table for
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@ import (
|
|||
"context"
|
||||
"fmt"
|
||||
|
||||
"drjosh.dev/jrouter/atalk/aep"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk/aep"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
)
|
||||
|
||||
|
|
|
|||
|
|
@ -1,65 +0,0 @@
|
|||
/*
|
||||
Copyright 2024 Josh Deprez
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package router
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
)
|
||||
|
||||
// StringSet is a set of strings.
|
||||
// Yep, yet another string set implementation. Took me 2 minutes to write *shrug*
|
||||
type StringSet map[string]struct{}
|
||||
|
||||
func (set StringSet) ToSlice() []string {
|
||||
ss := make([]string, 0, len(set))
|
||||
for s := range set {
|
||||
ss = append(ss, s)
|
||||
}
|
||||
return ss
|
||||
}
|
||||
|
||||
func (set StringSet) Contains(s string) bool {
|
||||
_, c := set[s]
|
||||
return c
|
||||
}
|
||||
|
||||
func (set StringSet) Insert(ss ...string) {
|
||||
for _, s := range ss {
|
||||
set[s] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
func (set StringSet) Add(t StringSet) {
|
||||
for s := range t {
|
||||
set[s] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
func SetFromSlice(ss []string) StringSet {
|
||||
set := make(StringSet, len(ss))
|
||||
set.Insert(ss...)
|
||||
return set
|
||||
}
|
||||
|
||||
// ago is a helper for formatting times.
|
||||
func ago(t time.Time) string {
|
||||
if t.IsZero() {
|
||||
return "never"
|
||||
}
|
||||
return fmt.Sprintf("%v ago", time.Since(t).Truncate(time.Millisecond))
|
||||
}
|
||||
|
|
@ -20,9 +20,10 @@ import (
|
|||
"context"
|
||||
"fmt"
|
||||
"log"
|
||||
"slices"
|
||||
|
||||
"drjosh.dev/jrouter/atalk"
|
||||
"drjosh.dev/jrouter/atalk/nbp"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk/nbp"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
)
|
||||
|
||||
|
|
@ -73,10 +74,10 @@ func (port *EtherTalkPort) handleNBPBrRq(ctx context.Context, ddpkt *ddp.ExtPack
|
|||
// tuple.Zone = port.DefaultZoneName
|
||||
// }
|
||||
|
||||
routes := port.Router.RouteTable.RoutesForZone(tuple.Zone)
|
||||
zones := port.Router.ZoneTable.LookupName(tuple.Zone)
|
||||
|
||||
for _, route := range routes {
|
||||
if outPort := route.EtherTalkDirect; outPort != nil {
|
||||
for _, z := range zones {
|
||||
if outPort := z.LocalPort; outPort != nil {
|
||||
// If it's for a local zone, translate it to a LkUp and broadcast
|
||||
// out the corresponding EtherTalk port.
|
||||
// "Note: On an internet, nodes on extended networks performing lookups in
|
||||
|
|
@ -146,7 +147,7 @@ func (port *EtherTalkPort) handleNBPBrRq(ctx context.Context, ddpkt *ddp.ExtPack
|
|||
SrcNet: ddpkt.SrcNet,
|
||||
SrcNode: ddpkt.SrcNode,
|
||||
SrcSocket: ddpkt.SrcSocket,
|
||||
DstNet: route.NetStart,
|
||||
DstNet: z.Network,
|
||||
DstNode: 0x00, // Any router for the dest network
|
||||
DstSocket: 2,
|
||||
Proto: ddp.ProtoNBP,
|
||||
|
|
@ -169,7 +170,7 @@ func (rtr *Router) handleNBPFwdReq(ctx context.Context, ddpkt *ddp.ExtPacket, nb
|
|||
tuple := &nbpkt.Tuples[0]
|
||||
|
||||
for _, outPort := range rtr.Ports {
|
||||
if !outPort.AvailableZones.Contains(tuple.Zone) {
|
||||
if !slices.Contains(outPort.AvailableZones, tuple.Zone) {
|
||||
continue
|
||||
}
|
||||
log.Printf("NBP: Converting FwdReq to LkUp (%v)", tuple)
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@ import (
|
|||
"context"
|
||||
"fmt"
|
||||
|
||||
"drjosh.dev/jrouter/atalk/nbp"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk/nbp"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
)
|
||||
|
||||
|
|
|
|||
|
|
@ -24,7 +24,7 @@ import (
|
|||
"sync"
|
||||
"time"
|
||||
|
||||
"drjosh.dev/jrouter/aurp"
|
||||
"gitea.drjosh.dev/josh/jrouter/aurp"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
)
|
||||
|
||||
|
|
@ -94,6 +94,9 @@ func (ss SenderState) String() string {
|
|||
|
||||
// AURPPeer handles the peering with a peer AURP router.
|
||||
type AURPPeer struct {
|
||||
// Whole router config.
|
||||
Config *Config
|
||||
|
||||
// AURP-Tr state for producing packets.
|
||||
Transport *aurp.Transport
|
||||
|
||||
|
|
@ -111,78 +114,15 @@ type AURPPeer struct {
|
|||
// Incoming packet channel.
|
||||
ReceiveCh chan aurp.Packet
|
||||
|
||||
// Route table (the peer will add/remove/update routes and zones)
|
||||
RouteTable *RouteTable
|
||||
// Routing table (the peer will add/remove/update routes)
|
||||
RoutingTable *RouteTable
|
||||
|
||||
// Event tuples yet to be sent to this peer in an RI-Upd.
|
||||
pendingEventsMu sync.Mutex
|
||||
pendingEvents aurp.EventTuples
|
||||
// Zone table (the peer will add/remove/update zones)
|
||||
ZoneTable *ZoneTable
|
||||
|
||||
// The internal states below are only set within the Handle loop, but can
|
||||
// be read concurrently from outside.
|
||||
mu sync.RWMutex
|
||||
rstate ReceiverState
|
||||
sstate SenderState
|
||||
lastReconnect time.Time
|
||||
lastHeardFrom time.Time
|
||||
lastSend time.Time // TODO: clarify use of lastSend / sendRetries
|
||||
lastUpdate time.Time
|
||||
sendRetries int
|
||||
}
|
||||
|
||||
func NewAURPPeer(routes *RouteTable, udpConn *net.UDPConn, peerAddr string, raddr *net.UDPAddr, localDI, remoteDI aurp.DomainIdentifier, connID uint16) *AURPPeer {
|
||||
if remoteDI == nil {
|
||||
remoteDI = aurp.IPDomainIdentifier(raddr.IP)
|
||||
}
|
||||
return &AURPPeer{
|
||||
Transport: &aurp.Transport{
|
||||
LocalDI: localDI,
|
||||
RemoteDI: remoteDI,
|
||||
LocalConnID: connID,
|
||||
},
|
||||
UDPConn: udpConn,
|
||||
ConfiguredAddr: peerAddr,
|
||||
RemoteAddr: raddr,
|
||||
ReceiveCh: make(chan aurp.Packet, 1024),
|
||||
RouteTable: routes,
|
||||
}
|
||||
}
|
||||
|
||||
func (p *AURPPeer) addPendingEvent(ec aurp.EventCode, route *Route) {
|
||||
// Don't advertise routes to AURP peers to other AURP peers
|
||||
if route.AURPPeer != nil {
|
||||
return
|
||||
}
|
||||
et := aurp.EventTuple{
|
||||
EventCode: ec,
|
||||
Extended: route.Extended,
|
||||
RangeStart: route.NetStart,
|
||||
Distance: route.Distance,
|
||||
RangeEnd: route.NetEnd,
|
||||
}
|
||||
switch ec {
|
||||
case aurp.EventCodeND, aurp.EventCodeNRC:
|
||||
et.Distance = 0 // "The distance field does not apply to ND or NRC event tuples and should be set to 0."
|
||||
}
|
||||
p.pendingEventsMu.Lock()
|
||||
defer p.pendingEventsMu.Unlock()
|
||||
p.pendingEvents = append(p.pendingEvents, et)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) RouteAdded(route *Route) {
|
||||
p.addPendingEvent(aurp.EventCodeNA, route)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) RouteDeleted(route *Route) {
|
||||
p.addPendingEvent(aurp.EventCodeND, route)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) RouteDistanceChanged(route *Route) {
|
||||
p.addPendingEvent(aurp.EventCodeNDC, route)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) RouteForwarderChanged(route *Route) {
|
||||
p.addPendingEvent(aurp.EventCodeNRC, route)
|
||||
mu sync.RWMutex
|
||||
rstate ReceiverState
|
||||
sstate SenderState
|
||||
}
|
||||
|
||||
func (p *AURPPeer) Forward(ddpkt *ddp.ExtPacket) error {
|
||||
|
|
@ -190,7 +130,7 @@ func (p *AURPPeer) Forward(ddpkt *ddp.ExtPacket) error {
|
|||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = p.send(p.Transport.NewAppleTalkPacket(outPkt))
|
||||
_, err = p.Send(p.Transport.NewAppleTalkPacket(outPkt))
|
||||
return err
|
||||
}
|
||||
|
||||
|
|
@ -206,36 +146,6 @@ func (p *AURPPeer) SenderState() SenderState {
|
|||
return p.sstate
|
||||
}
|
||||
|
||||
func (p *AURPPeer) LastReconnectAgo() string {
|
||||
p.mu.RLock()
|
||||
defer p.mu.RUnlock()
|
||||
return ago(p.lastReconnect)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) LastHeardFromAgo() string {
|
||||
p.mu.RLock()
|
||||
defer p.mu.RUnlock()
|
||||
return ago(p.lastHeardFrom)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) LastSendAgo() string {
|
||||
p.mu.RLock()
|
||||
defer p.mu.RUnlock()
|
||||
return ago(p.lastSend)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) LastUpdateAgo() string {
|
||||
p.mu.RLock()
|
||||
defer p.mu.RUnlock()
|
||||
return ago(p.lastUpdate)
|
||||
}
|
||||
|
||||
func (p *AURPPeer) SendRetries() int {
|
||||
p.mu.RLock()
|
||||
defer p.mu.RUnlock()
|
||||
return p.sendRetries
|
||||
}
|
||||
|
||||
func (p *AURPPeer) setRState(rstate ReceiverState) {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
|
|
@ -248,42 +158,6 @@ func (p *AURPPeer) setSState(sstate SenderState) {
|
|||
p.sstate = sstate
|
||||
}
|
||||
|
||||
func (p *AURPPeer) incSendRetries() {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
p.sendRetries++
|
||||
}
|
||||
|
||||
func (p *AURPPeer) resetSendRetries() {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
p.sendRetries = 0
|
||||
}
|
||||
|
||||
func (p *AURPPeer) bumpLastHeardFrom() {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
p.lastHeardFrom = time.Now()
|
||||
}
|
||||
|
||||
func (p *AURPPeer) bumpLastReconnect() {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
p.lastReconnect = time.Now()
|
||||
}
|
||||
|
||||
func (p *AURPPeer) bumpLastSend() {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
p.lastSend = time.Now()
|
||||
}
|
||||
|
||||
func (p *AURPPeer) bumpLastUpdate() {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
p.lastUpdate = time.Now()
|
||||
}
|
||||
|
||||
func (p *AURPPeer) disconnect() {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
|
|
@ -291,8 +165,8 @@ func (p *AURPPeer) disconnect() {
|
|||
p.sstate = SenderUnconnected
|
||||
}
|
||||
|
||||
// send encodes and sends pkt to the remote host.
|
||||
func (p *AURPPeer) send(pkt aurp.Packet) (int, error) {
|
||||
// Send encodes and sends pkt to the remote host.
|
||||
func (p *AURPPeer) Send(pkt aurp.Packet) (int, error) {
|
||||
var b bytes.Buffer
|
||||
if _, err := pkt.WriteTo(&b); err != nil {
|
||||
return 0, err
|
||||
|
|
@ -302,28 +176,23 @@ func (p *AURPPeer) send(pkt aurp.Packet) (int, error) {
|
|||
}
|
||||
|
||||
func (p *AURPPeer) Handle(ctx context.Context) error {
|
||||
// Stop listening to events if the goroutine exits
|
||||
defer p.RouteTable.RemoveObserver(p)
|
||||
|
||||
rticker := time.NewTicker(1 * time.Second)
|
||||
defer rticker.Stop()
|
||||
sticker := time.NewTicker(1 * time.Second)
|
||||
defer sticker.Stop()
|
||||
|
||||
p.mu.Lock()
|
||||
p.lastReconnect = time.Now()
|
||||
p.lastHeardFrom = time.Now()
|
||||
p.lastSend = time.Now() // TODO: clarify use of lastSend / sendRetries
|
||||
p.lastUpdate = time.Now()
|
||||
p.sendRetries = 0
|
||||
p.mu.Unlock()
|
||||
lastReconnect := time.Now()
|
||||
lastHeardFrom := time.Now()
|
||||
lastSend := time.Now() // TODO: clarify use of lastSend / sendRetries
|
||||
lastUpdate := time.Now()
|
||||
sendRetries := 0
|
||||
|
||||
var lastRISent aurp.Packet
|
||||
|
||||
p.disconnect()
|
||||
|
||||
// Write an Open-Req packet
|
||||
if _, err := p.send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Open-Req packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -339,7 +208,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
}
|
||||
// Send a best-effort Router Down before returning
|
||||
lastRISent = p.Transport.NewRDPacket(aurp.ErrCodeNormalClose)
|
||||
if _, err := p.send(lastRISent); err != nil {
|
||||
if _, err := p.Send(lastRISent); err != nil {
|
||||
log.Printf("Couldn't send RD packet: %v", err)
|
||||
}
|
||||
return ctx.Err()
|
||||
|
|
@ -347,71 +216,70 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
case <-rticker.C:
|
||||
switch p.rstate {
|
||||
case ReceiverWaitForOpenRsp:
|
||||
if time.Since(p.lastSend) <= sendRetryTimer {
|
||||
if time.Since(lastSend) <= sendRetryTimer {
|
||||
break
|
||||
}
|
||||
if p.sendRetries >= sendRetryLimit {
|
||||
if sendRetries >= sendRetryLimit {
|
||||
log.Printf("AURP Peer: Send retry limit reached while waiting for Open-Rsp, closing connection")
|
||||
p.setRState(ReceiverUnconnected)
|
||||
break
|
||||
}
|
||||
|
||||
// Send another Open-Req
|
||||
p.incSendRetries()
|
||||
p.bumpLastSend()
|
||||
if _, err := p.send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
sendRetries++
|
||||
lastSend = time.Now()
|
||||
if _, err := p.Send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Open-Req packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
||||
case ReceiverConnected:
|
||||
// Check LHFT, send tickle?
|
||||
if time.Since(p.lastHeardFrom) <= lastHeardFromTimer {
|
||||
if time.Since(lastHeardFrom) <= lastHeardFromTimer {
|
||||
break
|
||||
}
|
||||
if _, err := p.send(p.Transport.NewTicklePacket()); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewTicklePacket()); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Tickle: %v", err)
|
||||
return err
|
||||
}
|
||||
p.setRState(ReceiverWaitForTickleAck)
|
||||
p.resetSendRetries()
|
||||
p.bumpLastSend()
|
||||
sendRetries = 0
|
||||
lastSend = time.Now()
|
||||
|
||||
case ReceiverWaitForTickleAck:
|
||||
if time.Since(p.lastSend) <= sendRetryTimer {
|
||||
if time.Since(lastSend) <= sendRetryTimer {
|
||||
break
|
||||
}
|
||||
if p.sendRetries >= tickleRetryLimit {
|
||||
if sendRetries >= tickleRetryLimit {
|
||||
log.Printf("AURP Peer: Send retry limit reached while waiting for Tickle-Ack, closing connection")
|
||||
p.setRState(ReceiverUnconnected)
|
||||
p.RouteTable.DeleteAURPPeer(p)
|
||||
p.RoutingTable.DeleteAURPPeer(p)
|
||||
break
|
||||
}
|
||||
|
||||
p.incSendRetries()
|
||||
p.bumpLastSend()
|
||||
if _, err := p.send(p.Transport.NewTicklePacket()); err != nil {
|
||||
sendRetries++
|
||||
lastSend = time.Now()
|
||||
if _, err := p.Send(p.Transport.NewTicklePacket()); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Tickle: %v", err)
|
||||
return err
|
||||
}
|
||||
// still in Wait For Tickle-Ack
|
||||
|
||||
case ReceiverWaitForRIRsp:
|
||||
if time.Since(p.lastSend) <= sendRetryTimer {
|
||||
if time.Since(lastSend) <= sendRetryTimer {
|
||||
break
|
||||
}
|
||||
if p.sendRetries >= sendRetryLimit {
|
||||
if sendRetries >= sendRetryLimit {
|
||||
log.Printf("AURP Peer: Send retry limit reached while waiting for RI-Rsp, closing connection")
|
||||
p.setRState(ReceiverUnconnected)
|
||||
p.RouteTable.DeleteAURPPeer(p)
|
||||
p.RoutingTable.DeleteAURPPeer(p)
|
||||
break
|
||||
}
|
||||
|
||||
// RI-Req is stateless, so we don't need to cache the one we
|
||||
// sent earlier just to send it again
|
||||
p.incSendRetries()
|
||||
p.bumpLastSend()
|
||||
if _, err := p.send(p.Transport.NewRIReqPacket()); err != nil {
|
||||
sendRetries++
|
||||
if _, err := p.Send(p.Transport.NewRIReqPacket()); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Req packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -420,18 +288,18 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
case ReceiverUnconnected:
|
||||
// Data receiver is unconnected. If data sender is connected,
|
||||
// send a null RI-Upd to check if the sender is also unconnected
|
||||
if p.sstate == SenderConnected && time.Since(p.lastSend) > sendRetryTimer {
|
||||
if p.sendRetries >= sendRetryLimit {
|
||||
if p.sstate == SenderConnected && time.Since(lastSend) > sendRetryTimer {
|
||||
if sendRetries >= sendRetryLimit {
|
||||
log.Printf("AURP Peer: Send retry limit reached while probing sender connect, closing connection")
|
||||
}
|
||||
p.incSendRetries()
|
||||
p.bumpLastSend()
|
||||
sendRetries++
|
||||
lastSend = time.Now()
|
||||
aurp.Inc(&p.Transport.LocalSeq)
|
||||
events := aurp.EventTuples{{
|
||||
EventCode: aurp.EventCodeNull,
|
||||
}}
|
||||
lastRISent = p.Transport.NewRIUpdPacket(events)
|
||||
if _, err := p.send(lastRISent); err != nil {
|
||||
if _, err := p.Send(lastRISent); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Upd packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -440,7 +308,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
|
||||
if p.ConfiguredAddr != "" {
|
||||
// Periodically try to reconnect, if this peer is in the config file
|
||||
if time.Since(p.lastReconnect) <= reconnectTimer {
|
||||
if time.Since(lastReconnect) <= reconnectTimer {
|
||||
break
|
||||
}
|
||||
|
||||
|
|
@ -453,10 +321,10 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
log.Printf("AURP Peer: resolved %q to %v", p.ConfiguredAddr, raddr)
|
||||
p.RemoteAddr = raddr
|
||||
|
||||
p.bumpLastReconnect()
|
||||
p.resetSendRetries()
|
||||
p.bumpLastSend()
|
||||
if _, err := p.send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
lastReconnect = time.Now()
|
||||
sendRetries = 0
|
||||
lastSend = time.Now()
|
||||
if _, err := p.Send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Open-Req packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -470,64 +338,40 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
// Do nothing
|
||||
|
||||
case SenderConnected:
|
||||
if time.Since(p.lastUpdate) <= updateTimer {
|
||||
if time.Since(lastUpdate) <= updateTimer {
|
||||
break
|
||||
}
|
||||
|
||||
// Are there routing updates to send?
|
||||
p.pendingEventsMu.Lock()
|
||||
if len(p.pendingEvents) == 0 {
|
||||
p.pendingEventsMu.Unlock()
|
||||
break
|
||||
}
|
||||
// Yes - swap the slices, release the mutex, then send them
|
||||
pending := p.pendingEvents
|
||||
p.pendingEvents = make(aurp.EventTuples, 0, cap(pending))
|
||||
p.pendingEventsMu.Unlock()
|
||||
|
||||
// TODO: eliminate events that cancel out (e.g. NA then ND)
|
||||
// TODO: split pending events to fit within a packet
|
||||
|
||||
p.bumpLastUpdate()
|
||||
aurp.Inc(&p.Transport.LocalSeq)
|
||||
lastRISent = p.Transport.NewRIUpdPacket(pending)
|
||||
if _, err := p.send(lastRISent); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Upd packet: %v", err)
|
||||
return err
|
||||
}
|
||||
p.setSState(SenderWaitForRIUpdAck)
|
||||
// TODO: is there a routing update to send?
|
||||
|
||||
case SenderWaitForRIRspAck, SenderWaitForRIUpdAck:
|
||||
if time.Since(p.lastSend) <= sendRetryTimer {
|
||||
if time.Since(lastSend) <= sendRetryTimer {
|
||||
break
|
||||
}
|
||||
if lastRISent == nil {
|
||||
log.Print("AURP Peer: sender retry: lastRISent = nil?")
|
||||
continue
|
||||
}
|
||||
if p.sendRetries >= sendRetryLimit {
|
||||
if sendRetries >= sendRetryLimit {
|
||||
log.Printf("AURP Peer: Send retry limit reached, closing connection")
|
||||
p.setSState(SenderUnconnected)
|
||||
p.RouteTable.RemoveObserver(p)
|
||||
continue
|
||||
}
|
||||
p.incSendRetries()
|
||||
p.bumpLastSend()
|
||||
if _, err := p.send(lastRISent); err != nil {
|
||||
sendRetries++
|
||||
lastSend = time.Now()
|
||||
if _, err := p.Send(lastRISent); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't re-send %T: %v", lastRISent, err)
|
||||
return err
|
||||
}
|
||||
|
||||
case SenderWaitForRDAck:
|
||||
if time.Since(p.lastSend) <= sendRetryTimer {
|
||||
if time.Since(lastSend) <= sendRetryTimer {
|
||||
break
|
||||
}
|
||||
p.setSState(SenderUnconnected)
|
||||
p.RouteTable.RemoveObserver(p)
|
||||
}
|
||||
|
||||
case pkt := <-p.ReceiveCh:
|
||||
p.bumpLastHeardFrom()
|
||||
lastHeardFrom = time.Now()
|
||||
|
||||
switch pkt := pkt.(type) {
|
||||
case *aurp.OpenReqPacket:
|
||||
|
|
@ -554,21 +398,19 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
orsp = p.Transport.NewOpenRspPacket(0, 1, nil)
|
||||
}
|
||||
|
||||
if _, err := p.send(orsp); err != nil {
|
||||
if _, err := p.Send(orsp); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Open-Rsp: %v", err)
|
||||
return err
|
||||
}
|
||||
if orsp.RateOrErrCode >= 0 {
|
||||
// Data sender is successfully in connected state
|
||||
p.setSState(SenderConnected)
|
||||
p.RouteTable.AddObserver(p)
|
||||
}
|
||||
|
||||
// If receiver is unconnected, commence connecting
|
||||
if p.rstate == ReceiverUnconnected {
|
||||
p.resetSendRetries()
|
||||
p.bumpLastSend()
|
||||
if _, err := p.send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
lastSend = time.Now()
|
||||
sendRetries = 0
|
||||
if _, err := p.Send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Open-Req packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -589,8 +431,8 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
p.setRState(ReceiverConnected)
|
||||
|
||||
// Send an RI-Req
|
||||
p.resetSendRetries()
|
||||
if _, err := p.send(p.Transport.NewRIReqPacket()); err != nil {
|
||||
sendRetries = 0
|
||||
if _, err := p.Send(p.Transport.NewRIReqPacket()); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Req packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -601,19 +443,17 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
log.Printf("AURP Peer: Received RI-Req but was not expecting one (sender state was %v)", p.sstate)
|
||||
}
|
||||
|
||||
var nets aurp.NetworkTuples
|
||||
for _, r := range p.RouteTable.ValidNonAURPRoutes() {
|
||||
nets = append(nets, aurp.NetworkTuple{
|
||||
Extended: r.Extended,
|
||||
RangeStart: r.NetStart,
|
||||
RangeEnd: r.NetEnd,
|
||||
Distance: r.Distance,
|
||||
})
|
||||
nets := aurp.NetworkTuples{
|
||||
{
|
||||
Extended: true,
|
||||
RangeStart: p.Config.EtherTalk.NetStart,
|
||||
RangeEnd: p.Config.EtherTalk.NetEnd,
|
||||
Distance: 0,
|
||||
},
|
||||
}
|
||||
p.Transport.LocalSeq = 1
|
||||
// TODO: Split tuples across multiple packets as required
|
||||
lastRISent = p.Transport.NewRIRspPacket(aurp.RoutingFlagLast, nets)
|
||||
if _, err := p.send(lastRISent); err != nil {
|
||||
if _, err := p.Send(lastRISent); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Rsp packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -627,7 +467,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
log.Printf("AURP Peer: Learned about these networks: %v", pkt.Networks)
|
||||
|
||||
for _, nt := range pkt.Networks {
|
||||
p.RouteTable.InsertAURPRoute(
|
||||
p.RoutingTable.InsertAURPRoute(
|
||||
p,
|
||||
nt.Extended,
|
||||
ddp.Network(nt.RangeStart),
|
||||
|
|
@ -638,7 +478,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
|
||||
// TODO: track which networks we don't have zone info for, and
|
||||
// only set SZI for those ?
|
||||
if _, err := p.send(p.Transport.NewRIAckPacket(pkt.ConnectionID, pkt.Sequence, aurp.RoutingFlagSendZoneInfo)); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewRIAckPacket(pkt.ConnectionID, pkt.Sequence, aurp.RoutingFlagSendZoneInfo)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Ack packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -664,33 +504,15 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
}
|
||||
|
||||
p.setSState(SenderConnected)
|
||||
p.resetSendRetries()
|
||||
p.RouteTable.AddObserver(p)
|
||||
sendRetries = 0
|
||||
|
||||
// If SZI flag is set, send ZI-Rsp (transaction)
|
||||
// TODO: split ZI-Rsp packets similarly to ZIP Replies
|
||||
if pkt.Flags&aurp.RoutingFlagSendZoneInfo != 0 {
|
||||
// Inspect last routing info packet sent to determine
|
||||
// networks to gather names for
|
||||
var nets []ddp.Network
|
||||
switch last := lastRISent.(type) {
|
||||
case *aurp.RIRspPacket:
|
||||
for _, nt := range last.Networks {
|
||||
nets = append(nets, nt.RangeStart)
|
||||
}
|
||||
|
||||
case *aurp.RIUpdPacket:
|
||||
for _, et := range last.Events {
|
||||
// Only networks that were added
|
||||
if et.EventCode != aurp.EventCodeNA {
|
||||
continue
|
||||
}
|
||||
nets = append(nets, et.RangeStart)
|
||||
}
|
||||
|
||||
zones := map[ddp.Network][]string{
|
||||
p.Config.EtherTalk.NetStart: {p.Config.EtherTalk.ZoneName},
|
||||
}
|
||||
zones := p.RouteTable.ZonesForNetworks(nets)
|
||||
// TODO: split ZI-Rsp packets similarly to ZIP Replies
|
||||
if _, err := p.send(p.Transport.NewZIRspPacket(zones)); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewZIRspPacket(zones)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send ZI-Rsp packet: %v", err)
|
||||
}
|
||||
}
|
||||
|
|
@ -701,9 +523,9 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
// Receiver is unconnected, but their receiver sent us an
|
||||
// RI-Ack for something
|
||||
// Try to reconnect?
|
||||
p.resetSendRetries()
|
||||
p.bumpLastSend()
|
||||
if _, err := p.send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
lastSend = time.Now()
|
||||
sendRetries = 0
|
||||
if _, err := p.Send(p.Transport.NewOpenReqPacket(nil)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Open-Req packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -711,6 +533,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
}
|
||||
|
||||
case *aurp.RIUpdPacket:
|
||||
|
||||
var ackFlag aurp.RoutingFlag
|
||||
|
||||
for _, et := range pkt.Events {
|
||||
|
|
@ -720,7 +543,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
// Do nothing except respond with RI-Ack
|
||||
|
||||
case aurp.EventCodeNA:
|
||||
if err := p.RouteTable.InsertAURPRoute(
|
||||
if err := p.RoutingTable.InsertAURPRoute(
|
||||
p,
|
||||
et.Extended,
|
||||
et.RangeStart,
|
||||
|
|
@ -732,10 +555,10 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
ackFlag = aurp.RoutingFlagSendZoneInfo
|
||||
|
||||
case aurp.EventCodeND:
|
||||
p.RouteTable.DeleteAURPPeerNetwork(p, et.RangeStart)
|
||||
p.RoutingTable.DeleteAURPPeerNetwork(p, et.RangeStart)
|
||||
|
||||
case aurp.EventCodeNDC:
|
||||
p.RouteTable.UpdateAURPRouteDistance(p, et.RangeStart, et.Distance+1)
|
||||
p.RoutingTable.UpdateAURPRouteDistance(p, et.RangeStart, et.Distance+1)
|
||||
|
||||
case aurp.EventCodeNRC:
|
||||
// "An exterior router sends a Network Route Change
|
||||
|
|
@ -743,14 +566,14 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
// through its local internet changes to a path through
|
||||
// a tunneling port, causing split-horizoned processing
|
||||
// to eliminate that network’s routing information."
|
||||
p.RouteTable.DeleteAURPPeerNetwork(p, et.RangeStart)
|
||||
p.RoutingTable.DeleteAURPPeerNetwork(p, et.RangeStart)
|
||||
|
||||
case aurp.EventCodeZC:
|
||||
// "This event is reserved for future use."
|
||||
}
|
||||
}
|
||||
|
||||
if _, err := p.send(p.Transport.NewRIAckPacket(pkt.ConnectionID, pkt.Sequence, ackFlag)); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewRIAckPacket(pkt.ConnectionID, pkt.Sequence, ackFlag)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Ack: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -761,10 +584,10 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
}
|
||||
|
||||
log.Printf("AURP Peer: Router Down: error code %d %s", pkt.ErrorCode, pkt.ErrorCode)
|
||||
p.RouteTable.DeleteAURPPeer(p)
|
||||
p.RoutingTable.DeleteAURPPeer(p)
|
||||
|
||||
// Respond with RI-Ack
|
||||
if _, err := p.send(p.Transport.NewRIAckPacket(pkt.ConnectionID, pkt.Sequence, 0)); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewRIAckPacket(pkt.ConnectionID, pkt.Sequence, 0)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send RI-Ack: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -773,8 +596,8 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
|
||||
case *aurp.ZIReqPacket:
|
||||
// TODO: split ZI-Rsp packets similarly to ZIP Replies
|
||||
zones := p.RouteTable.ZonesForNetworks(pkt.Networks)
|
||||
if _, err := p.send(p.Transport.NewZIRspPacket(zones)); err != nil {
|
||||
zones := p.ZoneTable.Query(pkt.Networks)
|
||||
if _, err := p.Send(p.Transport.NewZIRspPacket(zones)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send ZI-Rsp packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -782,11 +605,11 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
case *aurp.ZIRspPacket:
|
||||
log.Printf("AURP Peer: Learned about these zones: %v", pkt.Zones)
|
||||
for _, zt := range pkt.Zones {
|
||||
p.RouteTable.AddZonesToNetwork(zt.Network, zt.Name)
|
||||
p.ZoneTable.Upsert(ddp.Network(zt.Network), zt.Name, nil)
|
||||
}
|
||||
|
||||
case *aurp.GDZLReqPacket:
|
||||
if _, err := p.send(p.Transport.NewGDZLRspPacket(-1, nil)); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewGDZLRspPacket(-1, nil)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send GDZL-Rsp packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -795,7 +618,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
log.Printf("AURP Peer: Received a GDZL-Rsp, but I wouldn't have sent a GDZL-Req - that's weird")
|
||||
|
||||
case *aurp.GZNReqPacket:
|
||||
if _, err := p.send(p.Transport.NewGZNRspPacket(pkt.ZoneName, false, nil)); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewGZNRspPacket(pkt.ZoneName, false, nil)); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send GZN-Rsp packet: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
@ -805,7 +628,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
|
|||
|
||||
case *aurp.TicklePacket:
|
||||
// Immediately respond with Tickle-Ack
|
||||
if _, err := p.send(p.Transport.NewTickleAckPacket()); err != nil {
|
||||
if _, err := p.Send(p.Transport.NewTickleAckPacket()); err != nil {
|
||||
log.Printf("AURP Peer: Couldn't send Tickle-Ack: %v", err)
|
||||
return err
|
||||
}
|
||||
|
|
|
|||
|
|
@ -46,8 +46,5 @@ func (p *EtherTalkPeer) Forward(ctx context.Context, pkt *ddp.ExtPacket) error {
|
|||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(outFrameRaw) < 64 {
|
||||
outFrameRaw = append(outFrameRaw, make([]byte, 64-len(outFrameRaw))...)
|
||||
}
|
||||
return p.Port.PcapHandle.WritePacketData(outFrameRaw)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -18,12 +18,11 @@ package router
|
|||
|
||||
import (
|
||||
"context"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
"log"
|
||||
|
||||
"drjosh.dev/jrouter/atalk"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk"
|
||||
"github.com/google/gopacket/pcap"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
"github.com/sfiera/multitalk/pkg/ethernet"
|
||||
|
|
@ -38,7 +37,7 @@ type EtherTalkPort struct {
|
|||
NetEnd ddp.Network
|
||||
MyAddr ddp.Addr
|
||||
DefaultZoneName string
|
||||
AvailableZones StringSet
|
||||
AvailableZones []string
|
||||
PcapHandle *pcap.Handle
|
||||
AARPMachine *AARPMachine
|
||||
Router *Router
|
||||
|
|
@ -80,18 +79,8 @@ func (port *EtherTalkPort) Serve(ctx context.Context) {
|
|||
|
||||
case ethertalk.AppleTalkProto:
|
||||
// log.Print("Got an AppleTalk frame")
|
||||
|
||||
// Workaround for strict length checking in sfiera/multitalk
|
||||
payload := ethFrame.Payload
|
||||
if len(payload) < 2 {
|
||||
log.Printf("Couldn't unmarshal DDP packet: too small (length = %d)", len(payload))
|
||||
}
|
||||
if size := binary.BigEndian.Uint16(payload[:2]) & 0x3ff; len(payload) > int(size) {
|
||||
payload = payload[:size]
|
||||
}
|
||||
|
||||
ddpkt := new(ddp.ExtPacket)
|
||||
if err := ddp.ExtUnmarshal(payload, ddpkt); err != nil {
|
||||
if err := ddp.ExtUnmarshal(ethFrame.Payload, ddpkt); err != nil {
|
||||
log.Printf("Couldn't unmarshal DDP packet: %v", err)
|
||||
continue
|
||||
}
|
||||
|
|
@ -200,8 +189,5 @@ func (port *EtherTalkPort) send(dstEth ethernet.Addr, pkt *ddp.ExtPacket) error
|
|||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(outFrameRaw) < 64 {
|
||||
outFrameRaw = append(outFrameRaw, make([]byte, 64-len(outFrameRaw))...)
|
||||
}
|
||||
return port.PcapHandle.WritePacketData(outFrameRaw)
|
||||
}
|
||||
|
|
|
|||
115
router/route.go
115
router/route.go
|
|
@ -34,10 +34,6 @@ type Route struct {
|
|||
|
||||
LastSeen time.Time
|
||||
|
||||
// ZoneNames may be empty between learning the existence of a route and
|
||||
// receiving zone information.
|
||||
ZoneNames StringSet
|
||||
|
||||
// Exactly one of the following should be set
|
||||
AURPPeer *AURPPeer // Next hop is this peer router (over AURP)
|
||||
EtherTalkPeer *EtherTalkPeer // Next hop is this peer router (over EtherTalk)
|
||||
|
|
@ -45,50 +41,23 @@ type Route struct {
|
|||
}
|
||||
|
||||
func (r Route) LastSeenAgo() string {
|
||||
return ago(r.LastSeen)
|
||||
}
|
||||
|
||||
// Valid reports whether the route is valid.
|
||||
// A valid route has one or more zone names, and if it is learned from a peer
|
||||
// router over EtherTalk is not too old.
|
||||
func (r *Route) Valid() bool {
|
||||
return len(r.ZoneNames) > 0 && (r.EtherTalkPeer == nil || time.Since(r.LastSeen) <= maxRouteAge)
|
||||
}
|
||||
|
||||
type RouteTableObserver interface {
|
||||
RouteAdded(*Route)
|
||||
RouteDeleted(*Route)
|
||||
RouteDistanceChanged(*Route)
|
||||
RouteForwarderChanged(*Route)
|
||||
if r.LastSeen.IsZero() {
|
||||
return "never"
|
||||
}
|
||||
return fmt.Sprintf("%v ago", time.Since(r.LastSeen).Truncate(time.Millisecond))
|
||||
}
|
||||
|
||||
type RouteTable struct {
|
||||
routesMu sync.RWMutex
|
||||
routes map[*Route]struct{}
|
||||
|
||||
observersMu sync.RWMutex
|
||||
observers map[RouteTableObserver]struct{}
|
||||
mu sync.Mutex
|
||||
routes map[*Route]struct{}
|
||||
}
|
||||
|
||||
func NewRouteTable() *RouteTable {
|
||||
return &RouteTable{
|
||||
routes: make(map[*Route]struct{}),
|
||||
observers: make(map[RouteTableObserver]struct{}),
|
||||
routes: make(map[*Route]struct{}),
|
||||
}
|
||||
}
|
||||
|
||||
func (rt *RouteTable) AddObserver(obs RouteTableObserver) {
|
||||
rt.observersMu.Lock()
|
||||
defer rt.observersMu.Unlock()
|
||||
rt.observers[obs] = struct{}{}
|
||||
}
|
||||
|
||||
func (rt *RouteTable) RemoveObserver(obs RouteTableObserver) {
|
||||
rt.observersMu.Lock()
|
||||
defer rt.observersMu.Unlock()
|
||||
delete(rt.observers, obs)
|
||||
}
|
||||
|
||||
func (rt *RouteTable) InsertEtherTalkDirect(port *EtherTalkPort) {
|
||||
r := &Route{
|
||||
Extended: true,
|
||||
|
|
@ -96,18 +65,17 @@ func (rt *RouteTable) InsertEtherTalkDirect(port *EtherTalkPort) {
|
|||
NetEnd: port.NetEnd,
|
||||
Distance: 0, // we're connected directly
|
||||
LastSeen: time.Now(),
|
||||
ZoneNames: port.AvailableZones,
|
||||
EtherTalkDirect: port,
|
||||
}
|
||||
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
rt.routes[r] = struct{}{}
|
||||
}
|
||||
|
||||
func (rt *RouteTable) Dump() []Route {
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
|
||||
table := make([]Route, 0, len(rt.routes))
|
||||
for r := range rt.routes {
|
||||
|
|
@ -117,15 +85,16 @@ func (rt *RouteTable) Dump() []Route {
|
|||
}
|
||||
|
||||
func (rt *RouteTable) LookupRoute(network ddp.Network) *Route {
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
|
||||
var bestRoute *Route
|
||||
for r := range rt.routes {
|
||||
if network < r.NetStart || network > r.NetEnd {
|
||||
continue
|
||||
}
|
||||
if !r.Valid() {
|
||||
// Exclude EtherTalk routes that are too old
|
||||
if r.EtherTalkPeer != nil && time.Since(r.LastSeen) > maxRouteAge {
|
||||
continue
|
||||
}
|
||||
if bestRoute == nil {
|
||||
|
|
@ -140,8 +109,8 @@ func (rt *RouteTable) LookupRoute(network ddp.Network) *Route {
|
|||
}
|
||||
|
||||
func (rt *RouteTable) DeleteAURPPeer(peer *AURPPeer) {
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
|
||||
for route := range rt.routes {
|
||||
if route.AURPPeer == peer {
|
||||
|
|
@ -151,8 +120,8 @@ func (rt *RouteTable) DeleteAURPPeer(peer *AURPPeer) {
|
|||
}
|
||||
|
||||
func (rt *RouteTable) DeleteAURPPeerNetwork(peer *AURPPeer, network ddp.Network) {
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
|
||||
for route := range rt.routes {
|
||||
if route.AURPPeer == peer && route.NetStart == network {
|
||||
|
|
@ -162,8 +131,8 @@ func (rt *RouteTable) DeleteAURPPeerNetwork(peer *AURPPeer, network ddp.Network)
|
|||
}
|
||||
|
||||
func (rt *RouteTable) UpdateAURPRouteDistance(peer *AURPPeer, network ddp.Network, distance uint8) {
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
|
||||
for route := range rt.routes {
|
||||
if route.AURPPeer == peer && route.NetStart == network {
|
||||
|
|
@ -173,16 +142,16 @@ func (rt *RouteTable) UpdateAURPRouteDistance(peer *AURPPeer, network ddp.Networ
|
|||
}
|
||||
}
|
||||
|
||||
func (rt *RouteTable) UpsertEtherTalkRoute(peer *EtherTalkPeer, extended bool, netStart, netEnd ddp.Network, metric uint8) (*Route, error) {
|
||||
func (rt *RouteTable) UpsertEtherTalkRoute(peer *EtherTalkPeer, extended bool, netStart, netEnd ddp.Network, metric uint8) error {
|
||||
if netStart > netEnd {
|
||||
return nil, fmt.Errorf("invalid network range [%d, %d]", netStart, netEnd)
|
||||
return fmt.Errorf("invalid network range [%d, %d]", netStart, netEnd)
|
||||
}
|
||||
if netStart != netEnd && !extended {
|
||||
return nil, fmt.Errorf("invalid network range [%d, %d] for nonextended network", netStart, netEnd)
|
||||
return fmt.Errorf("invalid network range [%d, %d] for nonextended network", netStart, netEnd)
|
||||
}
|
||||
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
|
||||
// Update?
|
||||
for r := range rt.routes {
|
||||
|
|
@ -200,7 +169,7 @@ func (rt *RouteTable) UpsertEtherTalkRoute(peer *EtherTalkPeer, extended bool, n
|
|||
}
|
||||
r.Distance = metric
|
||||
r.LastSeen = time.Now()
|
||||
return r, nil
|
||||
return nil
|
||||
}
|
||||
|
||||
// Insert.
|
||||
|
|
@ -213,7 +182,7 @@ func (rt *RouteTable) UpsertEtherTalkRoute(peer *EtherTalkPeer, extended bool, n
|
|||
EtherTalkPeer: peer,
|
||||
}
|
||||
rt.routes[r] = struct{}{}
|
||||
return r, nil
|
||||
return nil
|
||||
}
|
||||
|
||||
func (rt *RouteTable) InsertAURPRoute(peer *AURPPeer, extended bool, netStart, netEnd ddp.Network, metric uint8) error {
|
||||
|
|
@ -233,35 +202,19 @@ func (rt *RouteTable) InsertAURPRoute(peer *AURPPeer, extended bool, netStart, n
|
|||
AURPPeer: peer,
|
||||
}
|
||||
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
rt.routes[r] = struct{}{}
|
||||
return nil
|
||||
}
|
||||
|
||||
// ValidRoutes returns all valid routes.
|
||||
func (rt *RouteTable) ValidRoutes() []*Route {
|
||||
rt.routesMu.RLock()
|
||||
defer rt.routesMu.RUnlock()
|
||||
rt.mu.Lock()
|
||||
defer rt.mu.Unlock()
|
||||
valid := make([]*Route, 0, len(rt.routes))
|
||||
for r := range rt.routes {
|
||||
if r.Valid() {
|
||||
valid = append(valid, r)
|
||||
}
|
||||
}
|
||||
return valid
|
||||
}
|
||||
|
||||
// ValidNonAURPRoutes returns all valid routes that were not learned via AURP.
|
||||
func (rt *RouteTable) ValidNonAURPRoutes() []*Route {
|
||||
rt.routesMu.RLock()
|
||||
defer rt.routesMu.RUnlock()
|
||||
valid := make([]*Route, 0, len(rt.routes))
|
||||
for r := range rt.routes {
|
||||
if r.AURPPeer != nil {
|
||||
continue
|
||||
}
|
||||
if !r.Valid() {
|
||||
// Exclude EtherTalk routes that are too old
|
||||
if r.EtherTalkPeer != nil && time.Since(r.LastSeen) > maxRouteAge {
|
||||
continue
|
||||
}
|
||||
valid = append(valid, r)
|
||||
|
|
|
|||
|
|
@ -26,6 +26,7 @@ import (
|
|||
type Router struct {
|
||||
Config *Config
|
||||
RouteTable *RouteTable
|
||||
ZoneTable *ZoneTable
|
||||
Ports []*EtherTalkPort
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -22,10 +22,9 @@ import (
|
|||
"log"
|
||||
"time"
|
||||
|
||||
"drjosh.dev/jrouter/atalk"
|
||||
"drjosh.dev/jrouter/atalk/rtmp"
|
||||
"drjosh.dev/jrouter/atalk/zip"
|
||||
"drjosh.dev/jrouter/status"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk/rtmp"
|
||||
"gitea.drjosh.dev/josh/jrouter/status"
|
||||
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
)
|
||||
|
|
@ -102,7 +101,8 @@ func (port *EtherTalkPort) HandleRTMP(ctx context.Context, pkt *ddp.ExtPacket) e
|
|||
}
|
||||
|
||||
case rtmp.FunctionLoopProbe:
|
||||
return fmt.Errorf("TODO: handle Loop Probes")
|
||||
log.Print("RTMP: TODO: handle Loop Probes")
|
||||
return nil
|
||||
}
|
||||
|
||||
case ddp.ProtoRTMPResp:
|
||||
|
|
@ -110,51 +110,22 @@ func (port *EtherTalkPort) HandleRTMP(ctx context.Context, pkt *ddp.ExtPacket) e
|
|||
log.Print("RTMP: Got Response or Data")
|
||||
dataPkt, err := rtmp.UnmarshalDataPacket(pkt.Data)
|
||||
if err != nil {
|
||||
return fmt.Errorf("unmarshal RTMP Data packet: %w", err)
|
||||
log.Printf("RTMP: Couldn't unmarshal RTMP Data packet: %v", err)
|
||||
break
|
||||
}
|
||||
peer := &EtherTalkPeer{
|
||||
Port: port,
|
||||
PeerAddr: dataPkt.RouterAddr,
|
||||
}
|
||||
|
||||
var noZones []ddp.Network
|
||||
for _, nt := range dataPkt.NetworkTuples {
|
||||
route, err := port.Router.RouteTable.UpsertEtherTalkRoute(peer, nt.Extended, nt.RangeStart, nt.RangeEnd, nt.Distance+1)
|
||||
if err != nil {
|
||||
return fmt.Errorf("upsert EtherTalk route: %v", err)
|
||||
}
|
||||
if len(route.ZoneNames) == 0 {
|
||||
noZones = append(noZones, route.NetStart)
|
||||
}
|
||||
}
|
||||
if len(noZones) > 0 {
|
||||
// Send a ZIP Query for all networks we don't have zone names for.
|
||||
// TODO: split networks to fit in multiple packets as needed
|
||||
qryPkt, err := (&zip.QueryPacket{Networks: noZones}).Marshal()
|
||||
if err != nil {
|
||||
return fmt.Errorf("marshal ZIP Query packet: %w", err)
|
||||
}
|
||||
outDDP := &ddp.ExtPacket{
|
||||
ExtHeader: ddp.ExtHeader{
|
||||
Size: uint16(len(qryPkt)) + atalk.DDPExtHeaderSize,
|
||||
Cksum: 0,
|
||||
SrcNet: port.MyAddr.Network,
|
||||
SrcNode: port.MyAddr.Node,
|
||||
SrcSocket: 6,
|
||||
DstNet: pkt.SrcNet,
|
||||
DstNode: pkt.SrcNode,
|
||||
DstSocket: 6, // ZIP socket
|
||||
Proto: ddp.ProtoZIP,
|
||||
},
|
||||
Data: qryPkt,
|
||||
}
|
||||
if err := port.Send(ctx, outDDP); err != nil {
|
||||
return fmt.Errorf("sending ZIP Query: %w", err)
|
||||
for _, rt := range dataPkt.NetworkTuples {
|
||||
if err := port.Router.RouteTable.UpsertEtherTalkRoute(peer, rt.Extended, rt.RangeStart, rt.RangeEnd, rt.Distance+1); err != nil {
|
||||
log.Printf("RTMP: Couldn't upsert EtherTalk route: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
default:
|
||||
return fmt.Errorf("invalid DDP type %d on socket 1", pkt.Proto)
|
||||
log.Printf("RTMP: invalid DDP type %d on socket 1", pkt.Proto)
|
||||
}
|
||||
|
||||
return nil
|
||||
|
|
|
|||
|
|
@ -20,10 +20,11 @@ import (
|
|||
"context"
|
||||
"fmt"
|
||||
"log"
|
||||
"slices"
|
||||
|
||||
"drjosh.dev/jrouter/atalk"
|
||||
"drjosh.dev/jrouter/atalk/atp"
|
||||
"drjosh.dev/jrouter/atalk/zip"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk/atp"
|
||||
"gitea.drjosh.dev/josh/jrouter/atalk/zip"
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
"github.com/sfiera/multitalk/pkg/ethernet"
|
||||
)
|
||||
|
|
@ -51,9 +52,6 @@ func (port *EtherTalkPort) handleZIPZIP(ctx context.Context, ddpkt *ddp.ExtPacke
|
|||
case *zip.QueryPacket:
|
||||
return port.handleZIPQuery(ctx, ddpkt, zipkt)
|
||||
|
||||
case *zip.ReplyPacket:
|
||||
return port.handleZIPReply(zipkt)
|
||||
|
||||
case *zip.GetNetInfoPacket:
|
||||
return port.handleZIPGetNetInfo(ctx, ddpkt, zipkt)
|
||||
|
||||
|
|
@ -64,7 +62,7 @@ func (port *EtherTalkPort) handleZIPZIP(ctx context.Context, ddpkt *ddp.ExtPacke
|
|||
|
||||
func (port *EtherTalkPort) handleZIPQuery(ctx context.Context, ddpkt *ddp.ExtPacket, zipkt *zip.QueryPacket) error {
|
||||
log.Printf("ZIP: Got Query for networks %v", zipkt.Networks)
|
||||
networks := port.Router.RouteTable.ZonesForNetworks(zipkt.Networks)
|
||||
networks := port.Router.ZoneTable.Query(zipkt.Networks)
|
||||
|
||||
sendReply := func(resp *zip.ReplyPacket) error {
|
||||
respRaw, err := resp.Marshal()
|
||||
|
|
@ -158,21 +156,11 @@ func (port *EtherTalkPort) handleZIPQuery(ctx context.Context, ddpkt *ddp.ExtPac
|
|||
return nil
|
||||
}
|
||||
|
||||
func (port *EtherTalkPort) handleZIPReply(zipkt *zip.ReplyPacket) error {
|
||||
log.Printf("ZIP: Got Reply containing %v", zipkt.Networks)
|
||||
|
||||
// Integrate new zone information into route table.
|
||||
for n, zs := range zipkt.Networks {
|
||||
port.Router.RouteTable.AddZonesToNetwork(n, zs...)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (port *EtherTalkPort) handleZIPGetNetInfo(ctx context.Context, ddpkt *ddp.ExtPacket, zipkt *zip.GetNetInfoPacket) error {
|
||||
log.Printf("ZIP: Got GetNetInfo for zone %q", zipkt.ZoneName)
|
||||
|
||||
// The request is zoneValid if the zone name is available on this network.
|
||||
zoneValid := port.AvailableZones.Contains(zipkt.ZoneName)
|
||||
zoneValid := slices.Contains(port.AvailableZones, zipkt.ZoneName)
|
||||
|
||||
// The multicast address we return depends on the validity of the zone
|
||||
// name.
|
||||
|
|
@ -270,10 +258,10 @@ func (port *EtherTalkPort) handleZIPTReq(ctx context.Context, ddpkt *ddp.ExtPack
|
|||
|
||||
switch gzl.Function {
|
||||
case zip.FunctionGetZoneList:
|
||||
resp.Zones = port.Router.RouteTable.AllZoneNames()
|
||||
resp.Zones = port.Router.ZoneTable.AllNames()
|
||||
|
||||
case zip.FunctionGetLocalZones:
|
||||
resp.Zones = port.AvailableZones.ToSlice()
|
||||
resp.Zones = port.AvailableZones
|
||||
|
||||
case zip.FunctionGetMyZone:
|
||||
// Note: This shouldn't happen on extended networks (e.g. EtherTalk)
|
||||
|
|
|
|||
157
router/zones.go
157
router/zones.go
|
|
@ -17,72 +17,145 @@
|
|||
package router
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"slices"
|
||||
"sort"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/sfiera/multitalk/pkg/ddp"
|
||||
)
|
||||
|
||||
func (rt *RouteTable) AddZonesToNetwork(n ddp.Network, zs ...string) {
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
for r := range rt.routes {
|
||||
if n < r.NetStart || n > r.NetEnd {
|
||||
continue
|
||||
}
|
||||
if r.ZoneNames == nil {
|
||||
r.ZoneNames = make(StringSet)
|
||||
}
|
||||
r.ZoneNames.Insert(zs...)
|
||||
//const maxZoneAge = 10 * time.Minute // TODO: confirm
|
||||
|
||||
type Zone struct {
|
||||
Network ddp.Network
|
||||
Name string
|
||||
LocalPort *EtherTalkPort // nil if remote (local to another router)
|
||||
LastSeen time.Time
|
||||
}
|
||||
|
||||
func (z Zone) LastSeenAgo() string {
|
||||
if z.LastSeen.IsZero() {
|
||||
return "never"
|
||||
}
|
||||
return fmt.Sprintf("%v ago", time.Since(z.LastSeen).Truncate(time.Millisecond))
|
||||
}
|
||||
|
||||
type zoneKey struct {
|
||||
network ddp.Network
|
||||
name string
|
||||
}
|
||||
|
||||
type ZoneTable struct {
|
||||
mu sync.Mutex
|
||||
zones map[zoneKey]*Zone
|
||||
}
|
||||
|
||||
func NewZoneTable() *ZoneTable {
|
||||
return &ZoneTable{
|
||||
zones: make(map[zoneKey]*Zone),
|
||||
}
|
||||
}
|
||||
|
||||
func (rt *RouteTable) ZonesForNetworks(ns []ddp.Network) map[ddp.Network][]string {
|
||||
func (zt *ZoneTable) Dump() []Zone {
|
||||
zt.mu.Lock()
|
||||
defer zt.mu.Unlock()
|
||||
zs := make([]Zone, 0, len(zt.zones))
|
||||
for _, z := range zt.zones {
|
||||
zs = append(zs, *z)
|
||||
}
|
||||
return zs
|
||||
}
|
||||
|
||||
func (zt *ZoneTable) Upsert(network ddp.Network, name string, localPort *EtherTalkPort) {
|
||||
zt.mu.Lock()
|
||||
defer zt.mu.Unlock()
|
||||
key := zoneKey{network, name}
|
||||
z := zt.zones[key]
|
||||
if z != nil {
|
||||
z.LocalPort = localPort
|
||||
z.LastSeen = time.Now()
|
||||
return
|
||||
}
|
||||
zt.zones[key] = &Zone{
|
||||
Network: network,
|
||||
Name: name,
|
||||
LocalPort: localPort,
|
||||
LastSeen: time.Now(),
|
||||
}
|
||||
}
|
||||
|
||||
func (zt *ZoneTable) Query(ns []ddp.Network) map[ddp.Network][]string {
|
||||
slices.Sort(ns)
|
||||
zs := make(map[ddp.Network][]string)
|
||||
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
for r := range rt.routes {
|
||||
if !r.Valid() {
|
||||
continue
|
||||
}
|
||||
if _, ok := slices.BinarySearch(ns, r.NetStart); ok {
|
||||
for z := range r.ZoneNames {
|
||||
zs[r.NetStart] = append(zs[r.NetStart], z)
|
||||
}
|
||||
zt.mu.Lock()
|
||||
defer zt.mu.Unlock()
|
||||
for _, z := range zt.zones {
|
||||
// if time.Since(z.LastSeen) > maxZoneAge {
|
||||
// continue
|
||||
// }
|
||||
if _, ok := slices.BinarySearch(ns, z.Network); ok {
|
||||
zs[z.Network] = append(zs[z.Network], z.Name)
|
||||
}
|
||||
}
|
||||
return zs
|
||||
}
|
||||
|
||||
func (rt *RouteTable) RoutesForZone(zone string) []*Route {
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
func (zt *ZoneTable) LookupName(name string) []*Zone {
|
||||
zt.mu.Lock()
|
||||
defer zt.mu.Unlock()
|
||||
|
||||
var routes []*Route
|
||||
for r := range rt.routes {
|
||||
if !r.Valid() {
|
||||
continue
|
||||
}
|
||||
if r.ZoneNames.Contains(zone) {
|
||||
routes = append(routes, r)
|
||||
var zs []*Zone
|
||||
for _, z := range zt.zones {
|
||||
if z.Name == name {
|
||||
zs = append(zs, z)
|
||||
}
|
||||
}
|
||||
return routes
|
||||
return zs
|
||||
}
|
||||
|
||||
func (rt *RouteTable) AllZoneNames() (zones []string) {
|
||||
defer slices.Sort(zones)
|
||||
// func (zt *ZoneTable) LocalNames() []string {
|
||||
// zt.mu.Lock()
|
||||
// seen := make(map[string]struct{})
|
||||
// zs := make([]string, 0, len(zt.zones))
|
||||
// for _, z := range zt.zones {
|
||||
// // if time.Since(z.LastSeen) > maxZoneAge {
|
||||
// // continue
|
||||
// // }
|
||||
// if z.Local != nil {
|
||||
// continue
|
||||
// }
|
||||
// if _, s := seen[z.Name]; s {
|
||||
// continue
|
||||
// }
|
||||
// seen[z.Name] = struct{}{}
|
||||
// zs = append(zs, z.Name)
|
||||
|
||||
rt.routesMu.Lock()
|
||||
defer rt.routesMu.Unlock()
|
||||
// }
|
||||
// zt.mu.Unlock()
|
||||
|
||||
zs := make(StringSet)
|
||||
for r := range rt.routes {
|
||||
if !r.Valid() {
|
||||
// sort.Strings(zs)
|
||||
// return zs
|
||||
// }
|
||||
|
||||
func (zt *ZoneTable) AllNames() []string {
|
||||
zt.mu.Lock()
|
||||
seen := make(map[string]struct{})
|
||||
zs := make([]string, 0, len(zt.zones))
|
||||
for _, z := range zt.zones {
|
||||
// if time.Since(z.LastSeen) > maxZoneAge {
|
||||
// continue
|
||||
// }
|
||||
if _, s := seen[z.Name]; s {
|
||||
continue
|
||||
}
|
||||
zs.Add(r.ZoneNames)
|
||||
seen[z.Name] = struct{}{}
|
||||
zs = append(zs, z.Name)
|
||||
}
|
||||
zt.mu.Unlock()
|
||||
|
||||
return zs.ToSlice()
|
||||
sort.Strings(zs)
|
||||
return zs
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue