From 016721546bfafb129e85661de776ad2da80913b2 Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Fri, 5 Mar 2021 14:57:28 +0000 Subject: [PATCH] inital commit --- .devcontainer/Dockerfile | 20 ++++ .devcontainer/devcontainer.json | 29 +++++ LICENSE | 201 ++++++++++++++++++++++++++++++++ datadisk.go | 96 +++++++++++++++ go.mod | 9 ++ main.go | 37 ++++++ 6 files changed, 392 insertions(+) create mode 100644 .devcontainer/Dockerfile create mode 100644 .devcontainer/devcontainer.json create mode 100644 LICENSE create mode 100644 datadisk.go create mode 100644 go.mod create mode 100644 main.go diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile new file mode 100644 index 0000000..510c10b --- /dev/null +++ b/.devcontainer/Dockerfile @@ -0,0 +1,20 @@ +# [Choice] Go version: 1, 1.15, 1.14 +ARG VARIANT=1 +FROM mcr.microsoft.com/vscode/devcontainers/go:${VARIANT} + +# [Option] Install Node.js +ARG INSTALL_NODE="true" +ARG NODE_VERSION="lts/*" +RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "source /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi + +# [Optional] Uncomment this section to install additional OS packages. +# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \ +# && apt-get -y install --no-install-recommends + +# [Optional] Uncomment the next line to use go get to install anything else you need +RUN go get -x github.com/coreos/go-systemd/daemon +RUN go get -x github.com/fntlnz/mountinfo +RUN go get -x github.com/godbus/dbus + +# [Optional] Uncomment this line to install global node packages. +# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g " 2>&1 diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json new file mode 100644 index 0000000..ad4aba9 --- /dev/null +++ b/.devcontainer/devcontainer.json @@ -0,0 +1,29 @@ +{ + "name": "Go Home Assistant OS Agent", + "build": { + "dockerfile": "Dockerfile", + "args": { + "VARIANT": "1.15", + "INSTALL_NODE": "false", + "NODE_VERSION": "lts/*" + } + }, + "postCreateCommand": "go mod download", + "runArgs": [ "--cap-add=SYS_PTRACE", "--security-opt", "seccomp=unconfined" ], + "mounts" : [ "source=/run/dbus,target=/run/dbus,type=bind" ], + "settings": { + "terminal.integrated.shell.linux": "/bin/bash", + "go.useGoProxyToCheckForToolUpdates": false, + "go.useLanguageServer": true, + "go.gopath": "/go", + "go.goroot": "/usr/local/go", + "go.toolsGopath": "/go/bin", + "go.lintTool":"golangci-lint", + "go.lintFlags": [ + "--fast" + ] + }, + "extensions": [ + "golang.Go" + ] +} diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..997a2bc --- /dev/null +++ b/LICENSE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2021 Stefan Agner + + 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. diff --git a/datadisk.go b/datadisk.go new file mode 100644 index 0000000..dfe13ab --- /dev/null +++ b/datadisk.go @@ -0,0 +1,96 @@ +package main + +import ( + "fmt" + "time" + + "github.com/fntlnz/mountinfo" + "github.com/godbus/dbus/v5" + "github.com/godbus/dbus/v5/introspect" + "github.com/godbus/dbus/v5/prop" +) + +const ( + dataMount = "/mnt/data" +) + +func GetDataMount() *mountinfo.Mountinfo { + + minfo, err := mountinfo.GetMountInfo("/proc/self/mountinfo") + if err != nil { + fmt.Println(err.Error) + } + + for _, info := range minfo { + if dataMount == info.MountPoint { + return &info + } + } + return nil +} + +type datadisk struct { + currentDisk string +} + +func (d datadisk) ChangeDataDisk(newDevice string) (bool, *dbus.Error) { + time.Sleep(5 * time.Second) + fmt.Println(newDevice) + return true, nil +} + +const ( + objectPath = "/io/homeassistant/os/DataDisk" + ifaceName = "io.homeassistant.os.DataDisk" +) + +func InitializeDBus(conn *dbus.Conn) { + + d := datadisk{ + currentDisk: "", + } + + err := conn.Export(d, objectPath, ifaceName) + if err != nil { + panic(err) + } + + propsSpec := map[string]map[string]*prop.Prop{ + ifaceName: { + "CurrentDevice": { + Value: &d.currentDisk, + Writable: false, + Emit: prop.EmitTrue, + Callback: func(c *prop.Change) *dbus.Error { + fmt.Println(c.Name, "changed to", c.Value) + return nil + }, + }, + }, + } + props, err := prop.Export(conn, objectPath, propsSpec) + if err != nil { + panic(err) + } + + node := &introspect.Node{} + node.Name = ifaceName + iface := &introspect.Interface{} + + iface.Name = ifaceName + + mts := introspect.Methods(d) + iface.Methods = mts + iface.Properties = props.Introspection(ifaceName) + + node.Interfaces = append(node.Interfaces, *iface) + + dbus_xml_str := introspect.NewIntrospectable(node) + err = conn.Export(dbus_xml_str, objectPath, + "org.freedesktop.DBus.Introspectable") + if err != nil { + panic(err) + } + + fmt.Printf("Exposing object %s with interface %s ...\n", objectPath, ifaceName) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..c40f2b5 --- /dev/null +++ b/go.mod @@ -0,0 +1,9 @@ +module github.com/home-assistant/os-agent + +go 1.15 + +require ( + github.com/coreos/go-systemd/v22 v22.2.0 + github.com/fntlnz/mountinfo v0.0.0-20171106231217-40cb42681fad + github.com/godbus/dbus/v5 v5.0.3 +) diff --git a/main.go b/main.go new file mode 100644 index 0000000..e992526 --- /dev/null +++ b/main.go @@ -0,0 +1,37 @@ +package main + +import ( + "fmt" + "os" + + "github.com/coreos/go-systemd/v22/daemon" + "github.com/godbus/dbus/v5" +) + +const ( + busName = "io.homeassistant.os" +) + +func main() { + + conn, err := dbus.SystemBus() + if err != nil { + panic(err) + } + + reply, err := conn.RequestName(busName, + dbus.NameFlagDoNotQueue) + if err != nil { + panic(err) + } + if reply != dbus.RequestNameReplyPrimaryOwner { + fmt.Fprintln(os.Stderr, "name already taken") + os.Exit(1) + } + + fmt.Println(fmt.Sprintf("Listening on service %s ...", busName)) + InitializeDBus(conn) + + daemon.SdNotify(false, daemon.SdNotifyReady) + select {} +}