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Fix network detection with multiple interfaces on same net

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This commit is contained in:
Daniel 2022-01-22 12:37:38 +01:00
parent caa43f4167
commit f78e516284
2 changed files with 16 additions and 15 deletions
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23
netenv/addresses.go
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@ -76,14 +76,15 @@ func IsMyIP(ip net.IP) (yes bool, err error) {
// Check if current data matches IP.
// Matching on somewhat older data is not a problem, as these IPs would not
// just randomly pop up somewhere else that fast.
mine, matched := checkIfMyIP(ip)
if matched {
return mine, nil
}
// Check if the network changed.
if !myNetworksNetworkChangedFlag.IsSet() {
// Network did not change, return "no match".
mine, myNet := checkIfMyIP(ip)
switch {
case mine:
// IP matched.
return true, nil
case myNetworksNetworkChangedFlag.IsSet():
// The network changed, so we need to refresh the data.
case myNet:
// IP is one of the networks and nothing changed, so this is not our IP.
return false, nil
}
@ -104,13 +105,13 @@ func IsMyIP(ip net.IP) (yes bool, err error) {
}
myNetworks = make([]*net.IPNet, 0, len(interfaceNetworks))
for _, ifNet := range interfaceNetworks {
net, ok := ifNet.(*net.IPNet)
ipNet, ok := ifNet.(*net.IPNet)
if !ok {
log.Warningf("netenv: interface network of unexpected type %T", ifNet)
continue
}
myNetworks = append(myNetworks, net)
myNetworks = append(myNetworks, ipNet)
}
// Reset error.
@ -126,7 +127,7 @@ func IsMyIP(ip net.IP) (yes bool, err error) {
return false, nil
}
func checkIfMyIP(ip net.IP) (mine bool, matched bool) {
func checkIfMyIP(ip net.IP) (mine bool, myNet bool) {
// Check against assigned IPs.
for _, myNet := range myNetworks {
if ip.Equal(myNet.IP) {

8
netenv/network-change.go
View file

@ -40,8 +40,8 @@ serviceLoop:
for {
trigger := false
timeout := time.Minute
if GetOnlineStatus() != StatusOnline {
timeout := 15 * time.Second
if !Online() {
timeout = time.Second
}
// wait for trigger
@ -62,7 +62,7 @@ serviceLoop:
hasher := sha1.New() //nolint:gosec // not used for security
interfaces, err := net.Interfaces()
if err != nil {
log.Warningf("environment: failed to get interfaces: %s", err)
log.Warningf("netenv: failed to get interfaces: %s", err)
continue
}
for _, iface := range interfaces {
@ -72,7 +72,7 @@ serviceLoop:
// log.Tracef("adding: %s", iface.Flags.String())
addrs, err := iface.Addrs()
if err != nil {
log.Warningf("environment: failed to get addrs from interface %s: %s", iface.Name, err)
log.Warningf("netenv: failed to get addrs from interface %s: %s", iface.Name, err)
continue
}
for _, addr := range addrs {