// User specified ip address is acceptable only for networks with user specified subnets.
func validateNetworkingConfig(n libnetwork.Network, epConfig *networktypes.EndpointSettings) error {
if !hasUserDefinedIPAddress(epConfig) {
return nil
}
_, nwIPv4Configs, nwIPv6Configs := n.Info().IpamConfig()
for _, s := range []struct {
ipConfigured bool
subnetConfigs []*libnetwork.IpamConf
}{
{
ipConfigured: len(epConfig.IPAMConfig.IPv4Address) > 0,
subnetConfigs: nwIPv4Configs,
},
{
ipConfigured: len(epConfig.IPAMConfig.IPv6Address) > 0,
subnetConfigs: nwIPv6Configs,
},
} {
if s.ipConfigured {
foundSubnet := false
for _, cfg := range s.subnetConfigs {
if len(cfg.PreferredPool) > 0 {
foundSubnet = true
break
}
}
if !foundSubnet {
return runconfig.ErrUnsupportedNetworkNoSubnetAndIP
}
}
}
return nil
}
func buildNetworkResource(nw libnetwork.Network) *types.NetworkResource {
r := &types.NetworkResource{}
if nw == nil {
return r
}
info := nw.Info()
r.Name = nw.Name()
r.ID = nw.ID()
r.Scope = info.Scope()
r.Driver = nw.Type()
r.EnableIPv6 = info.IPv6Enabled()
r.Internal = info.Internal()
r.Options = info.DriverOptions()
r.Containers = make(map[string]types.EndpointResource)
buildIpamResources(r, info)
r.Internal = info.Internal()
r.Labels = info.Labels()
epl := nw.Endpoints()
for _, e := range epl {
ei := e.Info()
if ei == nil {
continue
}
sb := ei.Sandbox()
key := "ep-" + e.ID()
if sb != nil {
key = sb.ContainerID()
}
r.Containers[key] = buildEndpointResource(e)
}
return r
}
func buildNetworkResource(nw libnetwork.Network) *types.NetworkResource {
r := &types.NetworkResource{}
if nw == nil {
return r
}
r.Name = nw.Name()
r.ID = nw.ID()
r.Scope = nw.Info().Scope()
r.Driver = nw.Type()
r.EnableIPv6 = nw.Info().IPv6Enabled()
r.Internal = nw.Info().Internal()
r.Options = nw.Info().DriverOptions()
r.Containers = make(map[string]types.EndpointResource)
buildIpamResources(r, nw)
r.Internal = nw.Info().Internal()
epl := nw.Endpoints()
for _, e := range epl {
ei := e.Info()
if ei == nil {
continue
}
sb := ei.Sandbox()
if sb == nil {
continue
}
r.Containers[sb.ContainerID()] = buildEndpointResource(e)
}
return r
}
func buildNetworkResource(nw libnetwork.Network) *types.NetworkResource {
r := &types.NetworkResource{}
if nw == nil {
return r
}
r.Name = nw.Name()
r.ID = nw.ID()
r.Scope = nw.Info().Scope()
r.Driver = nw.Type()
r.Containers = make(map[string]types.EndpointResource)
r.Labels = nw.Info().Labels()
buildIpamResources(r, nw)
epl := nw.Endpoints()
for _, e := range epl {
sb := e.Info().Sandbox()
if sb == nil {
continue
}
r.Containers[sb.ContainerID()] = buildEndpointResource(e)
}
return r
}
func (daemon *Daemon) disconnectFromNetwork(container *container.Container, n libnetwork.Network, force bool) error {
var (
ep libnetwork.Endpoint
sbox libnetwork.Sandbox
)
s := func(current libnetwork.Endpoint) bool {
epInfo := current.Info()
if epInfo == nil {
return false
}
if sb := epInfo.Sandbox(); sb != nil {
if sb.ContainerID() == container.ID {
ep = current
sbox = sb
return true
}
}
return false
}
n.WalkEndpoints(s)
if ep == nil && force {
epName := strings.TrimPrefix(container.Name, "/")
ep, err := n.EndpointByName(epName)
if err != nil {
return err
}
return ep.Delete(force)
}
if ep == nil {
return fmt.Errorf("container %s is not connected to the network", container.ID)
}
if err := ep.Leave(sbox); err != nil {
return fmt.Errorf("container %s failed to leave network %s: %v", container.ID, n.Name(), err)
}
container.NetworkSettings.Ports = getPortMapInfo(sbox)
if err := ep.Delete(false); err != nil {
return fmt.Errorf("endpoint delete failed for container %s on network %s: %v", container.ID, n.Name(), err)
}
delete(container.NetworkSettings.Networks, n.Name())
if daemon.clusterProvider != nil && n.Info().Dynamic() && !container.Managed {
if err := daemon.clusterProvider.DetachNetwork(n.Name(), container.ID); err != nil {
logrus.Warnf("error detaching from network %s: %v", n.Name(), err)
if err := daemon.clusterProvider.DetachNetwork(n.ID(), container.ID); err != nil {
logrus.Warnf("error detaching from network %s: %v", n.ID(), err)
}
}
}
return nil
}
func buildIpamResources(r *types.NetworkResource, nw libnetwork.Network) {
id, opts, ipv4conf, ipv6conf := nw.Info().IpamConfig()
ipv4Info, ipv6Info := nw.Info().IpamInfo()
r.IPAM.Driver = id
r.IPAM.Options = opts
r.IPAM.Config = []network.IPAMConfig{}
for _, ip4 := range ipv4conf {
if ip4.PreferredPool == "" {
continue
}
iData := network.IPAMConfig{}
iData.Subnet = ip4.PreferredPool
iData.IPRange = ip4.SubPool
iData.Gateway = ip4.Gateway
iData.AuxAddress = ip4.AuxAddresses
r.IPAM.Config = append(r.IPAM.Config, iData)
}
if len(r.IPAM.Config) == 0 {
for _, ip4Info := range ipv4Info {
iData := network.IPAMConfig{}
iData.Subnet = ip4Info.IPAMData.Pool.String()
iData.Gateway = ip4Info.IPAMData.Gateway.String()
r.IPAM.Config = append(r.IPAM.Config, iData)
}
}
hasIpv6Conf := false
for _, ip6 := range ipv6conf {
if ip6.PreferredPool == "" {
continue
}
hasIpv6Conf = true
iData := network.IPAMConfig{}
iData.Subnet = ip6.PreferredPool
iData.IPRange = ip6.SubPool
iData.Gateway = ip6.Gateway
iData.AuxAddress = ip6.AuxAddresses
r.IPAM.Config = append(r.IPAM.Config, iData)
}
if !hasIpv6Conf {
for _, ip6Info := range ipv6Info {
iData := network.IPAMConfig{}
iData.Subnet = ip6Info.IPAMData.Pool.String()
iData.Gateway = ip6Info.IPAMData.Gateway.String()
r.IPAM.Config = append(r.IPAM.Config, iData)
}
}
}
// updateContainerNetworkSettings update the network settings
func (daemon *Daemon) updateContainerNetworkSettings(container *container.Container, endpointsConfig map[string]*networktypes.EndpointSettings) error {
var (
n libnetwork.Network
err error
)
mode := container.HostConfig.NetworkMode
if container.Config.NetworkDisabled || mode.IsContainer() {
return nil
}
networkName := mode.NetworkName()
if mode.IsDefault() {
networkName = daemon.netController.Config().Daemon.DefaultNetwork
}
if mode.IsUserDefined() {
n, err = daemon.FindNetwork(networkName)
if err != nil {
return err
}
if !container.Managed && n.Info().Dynamic() {
return errClusterNetworkOnRun(networkName)
}
networkName = n.Name()
}
if container.NetworkSettings == nil {
container.NetworkSettings = &network.Settings{}
}
if len(endpointsConfig) > 0 {
container.NetworkSettings.Networks = endpointsConfig
}
if container.NetworkSettings.Networks == nil {
container.NetworkSettings.Networks = make(map[string]*networktypes.EndpointSettings)
container.NetworkSettings.Networks[networkName] = new(networktypes.EndpointSettings)
}
if !mode.IsUserDefined() {
return nil
}
// Make sure to internally store the per network endpoint config by network name
if _, ok := container.NetworkSettings.Networks[networkName]; ok {
return nil
}
if nwConfig, ok := container.NetworkSettings.Networks[n.ID()]; ok {
container.NetworkSettings.Networks[networkName] = nwConfig
delete(container.NetworkSettings.Networks, n.ID())
return nil
}
return nil
}
func (n *networkRouter) buildNetworkResource(nw libnetwork.Network) *types.NetworkResource {
r := &types.NetworkResource{}
if nw == nil {
return r
}
info := nw.Info()
r.Name = nw.Name()
r.ID = nw.ID()
r.Created = info.Created()
r.Scope = info.Scope()
if n.clusterProvider.IsManager() {
if _, err := n.clusterProvider.GetNetwork(nw.Name()); err == nil {
r.Scope = "swarm"
}
} else if info.Dynamic() {
r.Scope = "swarm"
}
r.Driver = nw.Type()
r.EnableIPv6 = info.IPv6Enabled()
r.Internal = info.Internal()
r.Attachable = info.Attachable()
r.Options = info.DriverOptions()
r.Containers = make(map[string]types.EndpointResource)
buildIpamResources(r, info)
r.Labels = info.Labels()
peers := info.Peers()
if len(peers) != 0 {
r.Peers = buildPeerInfoResources(peers)
}
epl := nw.Endpoints()
for _, e := range epl {
ei := e.Info()
if ei == nil {
continue
}
sb := ei.Sandbox()
tmpID := e.ID()
key := "ep-" + tmpID
if sb != nil {
key = sb.ContainerID()
}
r.Containers[key] = buildEndpointResource(tmpID, e.Name(), ei)
}
return r
}
func buildIpamResources(r *types.NetworkResource, nw libnetwork.Network) {
id, ipv4conf, ipv6conf := nw.Info().IpamConfig()
r.IPAM.Driver = id
r.IPAM.Config = []network.IPAMConfig{}
for _, ip4 := range ipv4conf {
iData := network.IPAMConfig{}
iData.Subnet = ip4.PreferredPool
iData.IPRange = ip4.SubPool
iData.Gateway = ip4.Gateway
iData.AuxAddress = ip4.AuxAddresses
r.IPAM.Config = append(r.IPAM.Config, iData)
}
for _, ip6 := range ipv6conf {
iData := network.IPAMConfig{}
iData.Subnet = ip6.PreferredPool
iData.IPRange = ip6.SubPool
iData.Gateway = ip6.Gateway
iData.AuxAddress = ip6.AuxAddresses
r.IPAM.Config = append(r.IPAM.Config, iData)
}
}
// BuildCreateEndpointOptions builds endpoint options from a given network.
func (container *Container) BuildCreateEndpointOptions(n libnetwork.Network, epConfig *networktypes.EndpointSettings, sb libnetwork.Sandbox, daemonDNS []string) ([]libnetwork.EndpointOption, error) {
var (
bindings = make(nat.PortMap)
pbList []types.PortBinding
exposeList []types.TransportPort
createOptions []libnetwork.EndpointOption
)
defaultNetName := runconfig.DefaultDaemonNetworkMode().NetworkName()
if (!container.EnableServiceDiscoveryOnDefaultNetwork() && n.Name() == defaultNetName) ||
container.NetworkSettings.IsAnonymousEndpoint {
createOptions = append(createOptions, libnetwork.CreateOptionAnonymous())
}
if epConfig != nil {
ipam := epConfig.IPAMConfig
if ipam != nil && (ipam.IPv4Address != "" || ipam.IPv6Address != "" || len(ipam.LinkLocalIPs) > 0) {
var ipList []net.IP
for _, ips := range ipam.LinkLocalIPs {
if ip := net.ParseIP(ips); ip != nil {
ipList = append(ipList, ip)
}
}
createOptions = append(createOptions,
libnetwork.CreateOptionIpam(net.ParseIP(ipam.IPv4Address), net.ParseIP(ipam.IPv6Address), ipList, nil))
}
for _, alias := range epConfig.Aliases {
createOptions = append(createOptions, libnetwork.CreateOptionMyAlias(alias))
}
}
if container.NetworkSettings.Service != nil {
svcCfg := container.NetworkSettings.Service
var vip string
if svcCfg.VirtualAddresses[n.ID()] != nil {
vip = svcCfg.VirtualAddresses[n.ID()].IPv4
}
var portConfigs []*libnetwork.PortConfig
for _, portConfig := range svcCfg.ExposedPorts {
portConfigs = append(portConfigs, &libnetwork.PortConfig{
Name: portConfig.Name,
Protocol: libnetwork.PortConfig_Protocol(portConfig.Protocol),
TargetPort: portConfig.TargetPort,
PublishedPort: portConfig.PublishedPort,
})
}
createOptions = append(createOptions, libnetwork.CreateOptionService(svcCfg.Name, svcCfg.ID, net.ParseIP(vip), portConfigs, svcCfg.Aliases[n.ID()]))
}
if !containertypes.NetworkMode(n.Name()).IsUserDefined() {
createOptions = append(createOptions, libnetwork.CreateOptionDisableResolution())
}
// configs that are applicable only for the endpoint in the network
// to which container was connected to on docker run.
// Ideally all these network-specific endpoint configurations must be moved under
// container.NetworkSettings.Networks[n.Name()]
if n.Name() == container.HostConfig.NetworkMode.NetworkName() ||
(n.Name() == defaultNetName && container.HostConfig.NetworkMode.IsDefault()) {
if container.Config.MacAddress != "" {
mac, err := net.ParseMAC(container.Config.MacAddress)
if err != nil {
return nil, err
}
genericOption := options.Generic{
netlabel.MacAddress: mac,
}
createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
}
}
// Port-mapping rules belong to the container & applicable only to non-internal networks
portmaps := GetSandboxPortMapInfo(sb)
if n.Info().Internal() || len(portmaps) > 0 {
return createOptions, nil
}
if container.HostConfig.PortBindings != nil {
for p, b := range container.HostConfig.PortBindings {
bindings[p] = []nat.PortBinding{}
for _, bb := range b {
bindings[p] = append(bindings[p], nat.PortBinding{
HostIP: bb.HostIP,
HostPort: bb.HostPort,
})
}
}
}
portSpecs := container.Config.ExposedPorts
ports := make([]nat.Port, len(portSpecs))
var i int
for p := range portSpecs {
ports[i] = p
i++
}
nat.SortPortMap(ports, bindings)
for _, port := range ports {
expose := types.TransportPort{}
expose.Proto = types.ParseProtocol(port.Proto())
expose.Port = uint16(port.Int())
exposeList = append(exposeList, expose)
pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
binding := bindings[port]
for i := 0; i < len(binding); i++ {
pbCopy := pb.GetCopy()
newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
var portStart, portEnd int
if err == nil {
portStart, portEnd, err = newP.Range()
}
if err != nil {
return nil, fmt.Errorf("Error parsing HostPort value(%s):%v", binding[i].HostPort, err)
}
pbCopy.HostPort = uint16(portStart)
pbCopy.HostPortEnd = uint16(portEnd)
pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
pbList = append(pbList, pbCopy)
}
if container.HostConfig.PublishAllPorts && len(binding) == 0 {
pbList = append(pbList, pb)
}
}
var dns []string
if len(container.HostConfig.DNS) > 0 {
dns = container.HostConfig.DNS
} else if len(daemonDNS) > 0 {
dns = daemonDNS
}
if len(dns) > 0 {
createOptions = append(createOptions,
libnetwork.CreateOptionDNS(dns))
}
createOptions = append(createOptions,
libnetwork.CreateOptionPortMapping(pbList),
libnetwork.CreateOptionExposedPorts(exposeList))
return createOptions, nil
}
// BuildCreateEndpointOptions builds endpoint options from a given network.
func (container *Container) BuildCreateEndpointOptions(n libnetwork.Network, epConfig *network.EndpointSettings, sb libnetwork.Sandbox) ([]libnetwork.EndpointOption, error) {
var (
portSpecs = make(nat.PortSet)
bindings = make(nat.PortMap)
pbList []types.PortBinding
exposeList []types.TransportPort
createOptions []libnetwork.EndpointOption
)
if n.Name() == "bridge" || container.NetworkSettings.IsAnonymousEndpoint {
createOptions = append(createOptions, libnetwork.CreateOptionAnonymous())
}
if epConfig != nil {
ipam := epConfig.IPAMConfig
if ipam != nil && (ipam.IPv4Address != "" || ipam.IPv6Address != "") {
createOptions = append(createOptions,
libnetwork.CreateOptionIpam(net.ParseIP(ipam.IPv4Address), net.ParseIP(ipam.IPv6Address), nil))
}
for _, alias := range epConfig.Aliases {
createOptions = append(createOptions, libnetwork.CreateOptionMyAlias(alias))
}
}
if !containertypes.NetworkMode(n.Name()).IsUserDefined() {
createOptions = append(createOptions, libnetwork.CreateOptionDisableResolution())
}
// configs that are applicable only for the endpoint in the network
// to which container was connected to on docker run.
// Ideally all these network-specific endpoint configurations must be moved under
// container.NetworkSettings.Networks[n.Name()]
if n.Name() == container.HostConfig.NetworkMode.NetworkName() ||
(n.Name() == "bridge" && container.HostConfig.NetworkMode.IsDefault()) {
if container.Config.MacAddress != "" {
mac, err := net.ParseMAC(container.Config.MacAddress)
if err != nil {
return nil, err
}
genericOption := options.Generic{
netlabel.MacAddress: mac,
}
createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
}
}
// Port-mapping rules belong to the container & applicable only to non-internal networks
portmaps := getSandboxPortMapInfo(sb)
if n.Info().Internal() || len(portmaps) > 0 {
return createOptions, nil
}
if container.Config.ExposedPorts != nil {
portSpecs = container.Config.ExposedPorts
}
if container.HostConfig.PortBindings != nil {
for p, b := range container.HostConfig.PortBindings {
bindings[p] = []nat.PortBinding{}
for _, bb := range b {
bindings[p] = append(bindings[p], nat.PortBinding{
HostIP: bb.HostIP,
HostPort: bb.HostPort,
})
}
}
}
ports := make([]nat.Port, len(portSpecs))
var i int
for p := range portSpecs {
ports[i] = p
i++
}
nat.SortPortMap(ports, bindings)
for _, port := range ports {
expose := types.TransportPort{}
expose.Proto = types.ParseProtocol(port.Proto())
expose.Port = uint16(port.Int())
exposeList = append(exposeList, expose)
pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
binding := bindings[port]
for i := 0; i < len(binding); i++ {
pbCopy := pb.GetCopy()
newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
var portStart, portEnd int
if err == nil {
portStart, portEnd, err = newP.Range()
}
if err != nil {
return nil, derr.ErrorCodeHostPort.WithArgs(binding[i].HostPort, err)
}
pbCopy.HostPort = uint16(portStart)
pbCopy.HostPortEnd = uint16(portEnd)
pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
pbList = append(pbList, pbCopy)
}
if container.HostConfig.PublishAllPorts && len(binding) == 0 {
pbList = append(pbList, pb)
}
}
createOptions = append(createOptions,
libnetwork.CreateOptionPortMapping(pbList),
libnetwork.CreateOptionExposedPorts(exposeList))
return createOptions, nil
}
func (daemon *Daemon) initNetworkController(config *Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
netOptions, err := daemon.networkOptions(config, nil, nil)
if err != nil {
return nil, err
}
controller, err := libnetwork.New(netOptions...)
if err != nil {
return nil, fmt.Errorf("error obtaining controller instance: %v", err)
}
hnsresponse, err := hcsshim.HNSListNetworkRequest("GET", "", "")
if err != nil {
return nil, err
}
// Remove networks not present in HNS
for _, v := range controller.Networks() {
options := v.Info().DriverOptions()
hnsid := options[winlibnetwork.HNSID]
found := false
for _, v := range hnsresponse {
if v.Id == hnsid {
found = true
break
}
}
if !found {
// global networks should not be deleted by local HNS
if v.Info().Scope() != datastore.GlobalScope {
err = v.Delete()
if err != nil {
logrus.Errorf("Error occurred when removing network %v", err)
}
}
}
}
_, err = controller.NewNetwork("null", "none", "", libnetwork.NetworkOptionPersist(false))
if err != nil {
return nil, err
}
defaultNetworkExists := false
if network, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
options := network.Info().DriverOptions()
for _, v := range hnsresponse {
if options[winlibnetwork.HNSID] == v.Id {
defaultNetworkExists = true
break
}
}
}
// discover and add HNS networks to windows
// network that exist are removed and added again
for _, v := range hnsresponse {
var n libnetwork.Network
s := func(current libnetwork.Network) bool {
options := current.Info().DriverOptions()
if options[winlibnetwork.HNSID] == v.Id {
n = current
return true
}
return false
}
controller.WalkNetworks(s)
if n != nil {
// global networks should not be deleted by local HNS
if n.Info().Scope() == datastore.GlobalScope {
continue
}
v.Name = n.Name()
// This will not cause network delete from HNS as the network
// is not yet populated in the libnetwork windows driver
n.Delete()
}
netOption := map[string]string{
winlibnetwork.NetworkName: v.Name,
winlibnetwork.HNSID: v.Id,
}
v4Conf := []*libnetwork.IpamConf{}
for _, subnet := range v.Subnets {
ipamV4Conf := libnetwork.IpamConf{}
ipamV4Conf.PreferredPool = subnet.AddressPrefix
ipamV4Conf.Gateway = subnet.GatewayAddress
v4Conf = append(v4Conf, &ipamV4Conf)
}
name := v.Name
// If there is no nat network create one from the first NAT network
// encountered
if !defaultNetworkExists && runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) {
name = runconfig.DefaultDaemonNetworkMode().NetworkName()
defaultNetworkExists = true
}
v6Conf := []*libnetwork.IpamConf{}
_, err := controller.NewNetwork(strings.ToLower(v.Type), name, "",
libnetwork.NetworkOptionGeneric(options.Generic{
netlabel.GenericData: netOption,
}),
libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
)
if err != nil {
logrus.Errorf("Error occurred when creating network %v", err)
}
}
if !config.DisableBridge {
// Initialize default driver "bridge"
if err := initBridgeDriver(controller, config); err != nil {
return nil, err
}
}
return controller, nil
}