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moby--moby/runconfig/hostconfig_unix.go
John Howard ee6c3580c9 Move validation functions
Signed-off-by: John Howard <jhoward@microsoft.com>
2015-11-06 15:28:50 -08:00

173 lines
4.6 KiB
Go

// +build !windows
package runconfig
import (
"fmt"
"runtime"
"strings"
)
// IsValid indicates is an isolation level is valid
func (i IsolationLevel) IsValid() bool {
return i.IsDefault()
}
// IsPrivate indicates whether container uses it's private network stack.
func (n NetworkMode) IsPrivate() bool {
return !(n.IsHost() || n.IsContainer())
}
// IsDefault indicates whether container uses the default network stack.
func (n NetworkMode) IsDefault() bool {
return n == "default"
}
// DefaultDaemonNetworkMode returns the default network stack the daemon should
// use.
func DefaultDaemonNetworkMode() NetworkMode {
return NetworkMode("bridge")
}
// NetworkName returns the name of the network stack.
func (n NetworkMode) NetworkName() string {
if n.IsBridge() {
return "bridge"
} else if n.IsHost() {
return "host"
} else if n.IsContainer() {
return "container"
} else if n.IsNone() {
return "none"
} else if n.IsDefault() {
return "default"
} else if n.IsUserDefined() {
return n.UserDefined()
}
return ""
}
// IsBridge indicates whether container uses the bridge network stack
func (n NetworkMode) IsBridge() bool {
return n == "bridge"
}
// IsHost indicates whether container uses the host network stack.
func (n NetworkMode) IsHost() bool {
return n == "host"
}
// IsContainer indicates whether container uses a container network stack.
func (n NetworkMode) IsContainer() bool {
parts := strings.SplitN(string(n), ":", 2)
return len(parts) > 1 && parts[0] == "container"
}
// IsNone indicates whether container isn't using a network stack.
func (n NetworkMode) IsNone() bool {
return n == "none"
}
// ConnectedContainer is the id of the container which network this container is connected to.
func (n NetworkMode) ConnectedContainer() string {
parts := strings.SplitN(string(n), ":", 2)
if len(parts) > 1 {
return parts[1]
}
return ""
}
// IsUserDefined indicates user-created network
func (n NetworkMode) IsUserDefined() bool {
return !n.IsDefault() && !n.IsBridge() && !n.IsHost() && !n.IsNone() && !n.IsContainer()
}
// IsPreDefinedNetwork indicates if a network is predefined by the daemon
func IsPreDefinedNetwork(network string) bool {
n := NetworkMode(network)
return n.IsBridge() || n.IsHost() || n.IsNone()
}
//UserDefined indicates user-created network
func (n NetworkMode) UserDefined() string {
if n.IsUserDefined() {
return string(n)
}
return ""
}
// MergeConfigs merges the specified container Config and HostConfig.
// It creates a ContainerConfigWrapper.
func MergeConfigs(config *Config, hostConfig *HostConfig) *ContainerConfigWrapper {
return &ContainerConfigWrapper{
config,
hostConfig,
"", nil,
}
}
// ValidateNetMode ensures that the various combinations of requested
// network settings are valid.
func ValidateNetMode(c *Config, hc *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("--net: invalid net mode: invalid container format container:<name|id>")
}
}
if (hc.NetworkMode.IsHost() || hc.NetworkMode.IsContainer()) && c.Hostname != "" {
return ErrConflictNetworkHostname
}
if hc.NetworkMode.IsHost() && len(hc.Links) > 0 {
return ErrConflictHostNetworkAndLinks
}
if hc.NetworkMode.IsContainer() && len(hc.Links) > 0 {
return ErrConflictContainerNetworkAndLinks
}
if hc.NetworkMode.IsUserDefined() && len(hc.Links) > 0 {
return ErrConflictUserDefinedNetworkAndLinks
}
if (hc.NetworkMode.IsHost() || hc.NetworkMode.IsContainer()) && len(hc.DNS) > 0 {
return ErrConflictNetworkAndDNS
}
if (hc.NetworkMode.IsContainer() || hc.NetworkMode.IsHost()) && 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
}
// ValidateIsolationLevel performs platform specific validation of the
// isolation level in the hostconfig structure. Linux only supports "default"
// which is LXC container isolation
func ValidateIsolationLevel(hc *HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if !hc.Isolation.IsValid() {
return fmt.Errorf("invalid --isolation: %q - %s only supports 'default'", hc.Isolation, runtime.GOOS)
}
return nil
}