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package network
import (
"encoding/json"
"errors"
"net"
)
// TODO once the containers.conf file stuff is worked out, this should be modified
// to honor defines in the containers.conf as well as overrides?
const (
// CNIConfigDir is the path where CNI config files exist
CNIConfigDir = "/etc/cni/net.d"
// CNIDeviceName is the default network device name and in
// reality should have an int appended to it (cni-podman4)
CNIDeviceName = "cni-podman"
// DefaultPodmanDomainName is used for the dnsname plugin to define
// a localized domain name for a created network
DefaultPodmanDomainName = "dns.podman"
)
var (
ErrNetworkNotFound = errors.New("network not found")
)
// GetDefaultPodmanNetwork outputs the default network for podman
func GetDefaultPodmanNetwork() (*net.IPNet, error) {
_, n, err := net.ParseCIDR("10.88.1.0/24")
return n, err
}
// CNIPlugins is a way of marshalling a CNI network configuration to disk
type CNIPlugins interface {
Bytes() ([]byte, error)
}
// HostLocalBridge describes a configuration for a bridge plugin
// https://github.com/containernetworking/plugins/tree/master/plugins/main/bridge#network-configuration-reference
type HostLocalBridge struct {
PluginType string `json:"type"`
BrName string `json:"bridge,omitempty"`
IsGW bool `json:"isGateway"`
IsDefaultGW bool `json:"isDefaultGateway,omitempty"`
ForceAddress bool `json:"forceAddress,omitempty"`
IPMasq bool `json:"ipMasq,omitempty"`
MTU int `json:"mtu,omitempty"`
HairpinMode bool `json:"hairpinMode,omitempty"`
PromiscMode bool `json:"promiscMode,omitempty"`
Vlan int `json:"vlan,omitempty"`
IPAM IPAMHostLocalConf `json:"ipam"`
}
// Bytes outputs []byte
func (h *HostLocalBridge) Bytes() ([]byte, error) {
return json.MarshalIndent(h, "", "\t")
}
// IPAMHostLocalConf describes an IPAM configuration
// https://github.com/containernetworking/plugins/tree/master/plugins/ipam/host-local#network-configuration-reference
type IPAMHostLocalConf struct {
PluginType string `json:"type"`
Routes []IPAMRoute `json:"routes,omitempty"`
ResolveConf string `json:"resolveConf,omitempty"`
DataDir string `json:"dataDir,omitempty"`
Ranges [][]IPAMLocalHostRangeConf `json:"ranges,omitempty"`
}
// IPAMLocalHostRangeConf describes the new style IPAM ranges
type IPAMLocalHostRangeConf struct {
Subnet string `json:"subnet"`
RangeStart string `json:"rangeStart,omitempty"`
RangeEnd string `json:"rangeEnd,omitempty"`
Gateway string `json:"gateway,omitempty"`
}
// Bytes outputs the configuration as []byte
func (i IPAMHostLocalConf) Bytes() ([]byte, error) {
return json.MarshalIndent(i, "", "\t")
}
// IPAMRoute describes a route in an ipam config
type IPAMRoute struct {
Dest string `json:"dst"`
}
// PortMapConfig describes the default portmapping config
type PortMapConfig struct {
PluginType string `json:"type"`
Capabilities map[string]bool `json:"capabilities"`
}
// Bytes outputs the configuration as []byte
func (p PortMapConfig) Bytes() ([]byte, error) {
return json.MarshalIndent(p, "", "\t")
}
// IPAMDHCP describes the ipamdhcp config
type IPAMDHCP struct {
DHCP string `json:"type"`
}
// MacVLANConfig describes the macvlan config
type MacVLANConfig struct {
PluginType string `json:"type"`
Master string `json:"master"`
IPAM IPAMDHCP `json:"ipam"`
}
// Bytes outputs the configuration as []byte
func (p MacVLANConfig) Bytes() ([]byte, error) {
return json.MarshalIndent(p, "", "\t")
}
// FirewallConfig describes the firewall plugin
type FirewallConfig struct {
PluginType string `json:"type"`
Backend string `json:"backend"`
}
// Bytes outputs the configuration as []byte
func (f FirewallConfig) Bytes() ([]byte, error) {
return json.MarshalIndent(f, "", "\t")
}
// DNSNameConfig describes the dns container name resolution plugin config
type DNSNameConfig struct {
PluginType string `json:"type"`
DomainName string `json:"domainName"`
}
// Bytes outputs the configuration as []byte
func (d DNSNameConfig) Bytes() ([]byte, error) {
return json.MarshalIndent(d, "", "\t")
}
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