| package runconfig |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "io" |
| "strings" |
| |
| "github.com/docker/docker/api/types/container" |
| ) |
| |
| // DecodeHostConfig creates a HostConfig based on the specified Reader. |
| // It assumes the content of the reader will be JSON, and decodes it. |
| func DecodeHostConfig(src io.Reader) (*container.HostConfig, error) { |
| decoder := json.NewDecoder(src) |
| |
| var w ContainerConfigWrapper |
| if err := decoder.Decode(&w); err != nil { |
| return nil, err |
| } |
| |
| hc := w.getHostConfig() |
| return hc, nil |
| } |
| |
| // SetDefaultNetModeIfBlank changes the NetworkMode in a HostConfig structure |
| // to default if it is not populated. This ensures backwards compatibility after |
| // the validation of the network mode was moved from the docker CLI to the |
| // docker daemon. |
| func SetDefaultNetModeIfBlank(hc *container.HostConfig) { |
| if hc != nil { |
| if hc.NetworkMode == container.NetworkMode("") { |
| hc.NetworkMode = container.NetworkMode("default") |
| } |
| } |
| } |
| |
| // validateNetContainerMode ensures that the various combinations of requested |
| // network settings wrt container mode are valid. |
| func validateNetContainerMode(c *container.Config, hc *container.HostConfig) error { |
| // We may not be passed a host config, such as in the case of docker commit |
| if hc == nil { |
| return nil |
| } |
| parts := strings.Split(string(hc.NetworkMode), ":") |
| if parts[0] == "container" { |
| if len(parts) < 2 || parts[1] == "" { |
| return fmt.Errorf("Invalid network mode: invalid container format container:<name|id>") |
| } |
| } |
| |
| if hc.NetworkMode.IsContainer() && c.Hostname != "" { |
| return ErrConflictNetworkHostname |
| } |
| |
| if hc.NetworkMode.IsContainer() && len(hc.Links) > 0 { |
| return ErrConflictContainerNetworkAndLinks |
| } |
| |
| if hc.NetworkMode.IsContainer() && len(hc.DNS) > 0 { |
| return ErrConflictNetworkAndDNS |
| } |
| |
| if hc.NetworkMode.IsContainer() && len(hc.ExtraHosts) > 0 { |
| return ErrConflictNetworkHosts |
| } |
| |
| if (hc.NetworkMode.IsContainer() || hc.NetworkMode.IsHost()) && c.MacAddress != "" { |
| return ErrConflictContainerNetworkAndMac |
| } |
| |
| if hc.NetworkMode.IsContainer() && (len(hc.PortBindings) > 0 || hc.PublishAllPorts == true) { |
| return ErrConflictNetworkPublishPorts |
| } |
| |
| if hc.NetworkMode.IsContainer() && len(c.ExposedPorts) > 0 { |
| return ErrConflictNetworkExposePorts |
| } |
| return nil |
| } |