First cut at nmvpn plugin

Signed-off-by: Jim Ramsay <i.am@jimramsay.com>

.gitignore

@@ -1,4 +1,5 @@
 # Binaries for programs and plugins
+waybar-nmvpn
 *.exe
 *.exe~
 *.dll

README.md

@@ -1,2 +1,47 @@
 # waybar-nmvpn
+
 Waybar plugin to display NetworkManager VPN status
+
+## Installation
+
+```
+go install github.com/lack/waybar-nmvpn@latest
+```
+
+## Configuration
+
+In `$XDG_CONFIG_HOME/waybar/config`
+```json
+{
+    // ... other waybar configuration
+    "custom/nmvpn": {
+        "format": "{} {icon}",
+        "return-type": "json",
+        "exec": "$GOPATH/bin/waybar-nmvpn",
+        "format-icons": {
+            "connected": "",
+            "disconnected": "",
+            "none": "",
+            "error": "⚠"
+        }
+    }
+}
+```
+
+In `$XDG_CONFIG_HOME/waybar/style.css`
+```css
+#custom-nmvpn.connected {
+    background-color: rgba(0x29, 0x80, 0xb9, 0.8);
+    box-shadow: inset 0 -3px rgba(0x29, 0x80, 0xb9, 1.0);
+}
+
+#custom-nmvpn.disconnected {
+    background-color: rgba(0xf5, 0x3c, 0x3c, 0.8);
+    box-shadow: inset 0 -3px rgba(0xf5, 0x3c, 0x3c, 1.0);
+}
+
+#custom-nmvpn.error {
+    background-color: rgba(0xeb, 0x4d, 0x4b, 0.8);
+    box-shadow: inset 0 -3px rgba(0xeb, 0x4d, 0x4b, 1.0);
+}
+```

go.mod

@@ -0,0 +1,10 @@
+module github.com/lack/waybar-nmvpn
+
+go 1.18
+
+require (
+	github.com/Wifx/gonetworkmanager v0.4.0
+	github.com/lack/gowaybarplug v0.0.1
+)
+
+require github.com/godbus/dbus/v5 v5.0.2 // indirect

go.sum

@@ -0,0 +1,11 @@
+github.com/Wifx/gonetworkmanager v0.4.0 h1:iZ7o3z3YIqEEAa+bBOCwQkLLUQuxG02CdiE7NCe5y6A=
+github.com/Wifx/gonetworkmanager v0.4.0/go.mod h1:EdhHf2O00IZXfMv9LC6CS6SgTwcMTg/ZSDhGvch0cs8=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/godbus/dbus/v5 v5.0.2 h1:QtWdZQyXTEn7S0LXv9nVxPUiT37d1i7UntpRTiKM86E=
+github.com/godbus/dbus/v5 v5.0.2/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/lack/gowaybarplug v0.0.1 h1:v+ZURlUmXh1UXsEMQHAzBaojaRTrUmYUY+mJ7sOI/Yw=
+github.com/lack/gowaybarplug v0.0.1/go.mod h1:JDAsRZJ0F337PSepC1prQUc+8NOdaqTqKjTYm3eR67Q=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/xorcare/pointer v1.1.0 h1:sFwXOhRF8QZ0tyVZrtxWGIoVZNEmRzBCaFWdONPQIUM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

main.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/lack/waybar-nmvpn/pkg/nmvpn"
+
+	waybar "github.com/lack/gowaybarplug"
+)
+
+func loop(interval time.Duration) {
+	wb := waybar.NewUpdater()
+
+	for true {
+		status := waybar.Status{
+			Text: "VPN",
+		}
+		vpns, err := nmvpn.GetVPNs()
+		if err == nil && len(vpns) > 0 {
+			active := false
+			for _, v := range vpns {
+				if v.Active {
+					active = true
+					break
+				}
+			}
+			if active {
+				status.Alt = "connected"
+				status.Class = []string{"connected"}
+			} else {
+				status.Alt = "disconnected"
+				status.Class = []string{"disconnected"}
+			}
+			status.Tooltip = ""
+			for _, v := range vpns {
+				if status.Tooltip != "" {
+					status.Tooltip += "\n"
+				}
+				state := "down"
+				if v.Active {
+					state = "up"
+				}
+				status.Tooltip += fmt.Sprintf("%s: %s", v.Name, state)
+			}
+		} else if err != nil {
+			status.Alt = "error"
+			status.Class = []string{"error"}
+			status.Tooltip = fmt.Sprintf("Error fetching VPN information: %v", err)
+		} else {
+			status.Alt = "none"
+			status.Class = []string{"unconfigured"}
+			status.Tooltip = "No VPN connections configured"
+		}
+		wb.Status <- &status
+		time.Sleep(interval)
+	}
+}
+
+func main() {
+	loop(5 * time.Second)
+}

pkg/nmvpn/nmvpn.go

@@ -0,0 +1,59 @@
+package nmvpn
+
+import (
+	gonm "github.com/Wifx/gonetworkmanager"
+)
+
+type Vpn struct {
+	Name   string
+	Uuid   string
+	Active bool
+}
+
+func GetVPNs() ([]Vpn, error) {
+	settings, err := gonm.NewSettings()
+	if err != nil {
+		return nil, err
+	}
+
+	connections, err := settings.ListConnections()
+	if err != nil {
+		return nil, err
+	}
+
+	vpns := make([]Vpn, 0, len(connections))
+	for _, c := range connections {
+		s, err := c.GetSettings()
+		if err != nil {
+			return nil, err
+		}
+		ctype := s["connection"]["type"].(string)
+		if ctype == "vpn" {
+			vpn := Vpn{
+				Name: s["connection"]["id"].(string),
+				Uuid: s["connection"]["uuid"].(string),
+			}
+			vpns = append(vpns, vpn)
+		}
+	}
+	if len(vpns) > 0 {
+		nm, err := gonm.NewNetworkManager()
+		if err != nil {
+			return nil, err
+		}
+
+		actives, err := nm.GetPropertyActiveConnections()
+		for _, a := range actives {
+			uuid, err := a.GetPropertyUUID()
+			if err != nil {
+				return nil, err
+			}
+			for i, v := range vpns {
+				if uuid == v.Uuid {
+					vpns[i].Active = true
+				}
+			}
+		}
+	}
+	return vpns, nil
+}