respondd batman support

config-respondd_example.toml

@@ -1,7 +1,7 @@
 # how ofter the cache respond of a respondd request is calculated
 data_interval = "3m"
 
-interfaces = [ "wlp4s0" ]
+batman = "[::1]:33123"
 
 [[listen]]
 address   = "ff02::2:1001"

respond/daemon/batman.go

@@ -0,0 +1,89 @@
+package respondd
+
+import (
+	"net"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/bdlm/log"
+
+	"github.com/FreifunkBremen/yanic/data"
+)
+
+type Batman struct {
+	Bridge     string
+	Interfaces []string
+}
+
+func NewBatman(iface string) *Batman {
+	out, err := exec.Command("batctl", "-m", iface, "if").Output()
+	if err != nil {
+		log.WithField("iface", iface).Error("not able to run batctl")
+		return nil
+	}
+	b := &Batman{Bridge: iface}
+	for _, line := range strings.Split(string(out), "\n") {
+		i := strings.Split(line, ":")[0]
+		if i != "" {
+			b.Interfaces = append(b.Interfaces, i)
+		}
+	}
+	return b
+}
+func (b *Batman) Address(iface string) string {
+	i, err := net.InterfaceByName(iface)
+	if err != nil {
+		return ""
+	}
+	return i.HardwareAddr.String()
+}
+func (b *Batman) Neighbours() map[string]data.BatadvNeighbours {
+	out, err := exec.Command("batctl", "-m", b.Bridge, "o").Output()
+	if err != nil {
+		log.WithField("iface", b.Bridge).Error("not able to run batctl")
+		return nil
+	}
+
+	lines := strings.Split(string(out), "\n")
+	neighbours := make(map[string]data.BatadvNeighbours)
+
+	re := regexp.MustCompile(`([0-9a-f:]+)\s+(\d+\.\d+)s\s+\((\d+)\)\s+([0-9a-f:]+)\s+\[\s*([a-z0-9-]+)\]`)
+
+	for _, i := range b.Interfaces {
+		mac := b.Address(i)
+		neighbour := data.BatadvNeighbours{
+			Neighbours: make(map[string]data.BatmanLink),
+		}
+
+		for _, line := range lines {
+			fields := re.FindStringSubmatch(line)
+			if len(fields) != 6 {
+				continue
+			}
+			if i == fields[5] && fields[1] == fields[4] {
+				lastseen, err := strconv.ParseFloat(fields[2], 64)
+				if err != nil {
+					log.WithField("value", fields[2]).Warnf("unable to parse lastseen: %s", err)
+					continue
+				}
+
+				tq, err := strconv.Atoi(fields[3])
+				if err != nil {
+					log.WithField("value", fields[3]).Warnf("unable to parse tq: %s", err)
+					continue
+				}
+
+				nMAC := fields[1]
+
+				neighbour.Neighbours[nMAC] = data.BatmanLink{
+					Lastseen: lastseen,
+					Tq:       tq,
+				}
+			}
+		}
+		neighbours[mac] = neighbour
+	}
+	return neighbours
+}

respond/daemon/config.go

@@ -19,8 +19,9 @@ type Daemon struct {
 		Interface string `toml:"interface"`
 		Port      int    `toml:"port"`
 	} `toml:"listen"`
-	InterfacesBatman []string `toml:"interfaces_batman"`
-	Interfaces       []string `toml:"interfaces"`
+
+	Batman []string `toml:"batman"`
+	Babel  string   `toml:"babel"`
 
 	dataByInterface map[string]*data.ResponseData
 

respond/daemon/neighbours.go

@@ -4,7 +4,14 @@ import (
 	"github.com/FreifunkBremen/yanic/data"
 )
 
-func (d *Daemon) updateNeighbours(iface string, data *data.ResponseData) {
+func (d *Daemon) updateNeighbours(iface string, resp *data.ResponseData) {
 	_, nodeID := d.getAnswer(iface)
-	data.Neighbours.NodeID = nodeID
+	resp.Neighbours.NodeID = nodeID
+	resp.Neighbours.Batadv = make(map[string]data.BatadvNeighbours)
+	for _, bface := range d.Batman {
+		b := NewBatman(bface)
+		for bfaceAddr, n := range b.Neighbours() {
+			resp.Neighbours.Batadv[bfaceAddr] = n
+		}
+	}
 }

respond/daemon/nodeinfo.go

@@ -9,36 +9,43 @@ import (
 	"github.com/FreifunkBremen/yanic/data"
 )
 
-func (d *Daemon) updateNodeinfo(iface string, data *data.ResponseData) {
+func (d *Daemon) updateNodeinfo(iface string, resp *data.ResponseData) {
 	config, nodeID := d.getAnswer(iface)
-	data.Nodeinfo.NodeID = nodeID
+	resp.Nodeinfo.NodeID = nodeID
 
 	if config.Hostname == "" {
-		data.Nodeinfo.Hostname, _ = os.Hostname()
+		resp.Nodeinfo.Hostname, _ = os.Hostname()
 	} else {
-		data.Nodeinfo.Hostname = config.Hostname
+		resp.Nodeinfo.Hostname = config.Hostname
 	}
 
-	data.Nodeinfo.VPN = config.VPN
-	data.Nodeinfo.Location = config.Location
+	resp.Nodeinfo.VPN = config.VPN
+	resp.Nodeinfo.Location = config.Location
 
-	data.Nodeinfo.System.SiteCode = config.SiteCode
-	data.Nodeinfo.System.DomainCode = config.DomainCode
+	resp.Nodeinfo.System.SiteCode = config.SiteCode
+	resp.Nodeinfo.System.DomainCode = config.DomainCode
 
-	data.Nodeinfo.Hardware.Nproc = runtime.NumCPU()
+	resp.Nodeinfo.Hardware.Nproc = runtime.NumCPU()
 
-	if data.Nodeinfo.Network.Mac == "" {
-		data.Nodeinfo.Network.Mac = fmt.Sprintf("%s:%s:%s:%s:%s:%s", nodeID[0:2], nodeID[2:4], nodeID[4:6], nodeID[6:8], nodeID[8:10], nodeID[10:12])
+	if resp.Nodeinfo.Network.Mac == "" {
+		resp.Nodeinfo.Network.Mac = fmt.Sprintf("%s:%s:%s:%s:%s:%s", nodeID[0:2], nodeID[2:4], nodeID[4:6], nodeID[6:8], nodeID[8:10], nodeID[10:12])
 	}
 
-	if iface == "" {
-		data.Nodeinfo.Network.Addresses = []string{}
-		for _, i := range d.Interfaces {
-			addrs := getAddresses(i)
-			data.Nodeinfo.Network.Addresses = append(data.Nodeinfo.Network.Addresses, addrs...)
+	if iface != "" {
+		resp.Nodeinfo.Network.Addresses = getAddresses(iface)
 	}
-	} else {
-		data.Nodeinfo.Network.Addresses = getAddresses(iface)
+
+	resp.Nodeinfo.Network.Mesh = make(map[string]*data.NetworkInterface)
+	for _, bface := range d.Batman {
+		b := NewBatman(bface)
+		mesh := data.NetworkInterface{}
+		for _, bbface := range b.Interfaces {
+			addr := b.Address(bbface)
+			if addr != "" {
+				mesh.Interfaces.Tunnel = append(mesh.Interfaces.Tunnel, addr)
+			}
+		}
+		resp.Nodeinfo.Network.Mesh[bface] = &mesh
 	}
 }
 

respond/daemon/statistics.go

@@ -1,8 +1,8 @@
 package respondd
 
 import (
-	"github.com/shirou/gopsutil/load"
 	"github.com/shirou/gopsutil/host"
+	"github.com/shirou/gopsutil/load"
 	"github.com/shirou/gopsutil/mem"
 
 	"github.com/FreifunkBremen/yanic/data"