config

package
v0.4.6 Latest Latest
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 Go to latest Published: Dec 4, 2023 License: Apache-2.0 Imports: 44 Imported by: 0

Documentation

Overview

Package config defines, loads and parses project wide configuration settings from various sources

Index

Constants

View Source 
const (
	DefaultSocketPath = "/var/run/cunicu.sock"

	// Ephemeral Port Range (RFC6056 Sect. 2.1)
	EphemeralPortMin = (1 << 15) + (1 << 14)
	EphemeralPortMax = (1 << 16) - 1
)
View Source 
const (
	DefaultRouteTable = 254 // main table
)

Variables

View Source 
var (
	DefaultPrefixes = []string{"fc2f:9a4d::/32", "10.237.0.0/16"}

	DefaultBackends = []url.URL{
		{
			Scheme: "grpc",
			Host:   "signal.cunicu.li:443",
		},
	}

	DefaultICEURLs = []url.URL{
		{
			Scheme: "grpc",
			Host:   "relay.cunicu.li:443",
		},
	}

	DefaultSettings = Settings{
		Backends: DefaultBackends,
		RPC: RPCSettings{
			Socket: DefaultSocketPath,
			Wait:   false,
		},
		Log: LogSettings{
			Banner: true,
		},
		WatchInterval: 1 * time.Second,
		DefaultInterfaceSettings: InterfaceSettings{
			DiscoverPeers:     true,
			DiscoverEndpoints: true,
			SyncConfig:        true,
			SyncHosts:         true,
			SyncRoutes:        true,
			WatchRoutes:       true,

			PortForwarding: true,

			ICE: ICESettings{
				URLs:                DefaultICEURLs,
				CheckInterval:       200 * time.Millisecond,
				DisconnectedTimeout: 5 * time.Second,
				FailedTimeout:       25 * time.Second,
				RestartTimeout:      10 * time.Second,
				InterfaceFilter:     "*",
				KeepaliveInterval:   2 * time.Second,
				MaxBindingRequests:  7,
				PortRange: PortRangeSettings{
					Min: EphemeralPortMin,
					Max: EphemeralPortMax,
				},
				CandidateTypes: []ice.CandidateType{
					ice.CandidateTypeHost,
					ice.CandidateTypeServerReflexive,
					ice.CandidateTypePeerReflexive,
					ice.CandidateTypeRelay,
				},
				NetworkTypes: []ice.NetworkType{
					ice.NetworkTypeUDP4,
					ice.NetworkTypeUDP6,
					ice.NetworkTypeTCP4,
					ice.NetworkTypeTCP6,
				},
			},

			RoutingTable: DefaultRouteTable,

			ListenPortRange: &PortRangeSettings{
				Min: wg.DefaultPort,
				Max: EphemeralPortMax,
			},
		},
	}
)
View Source 
var OutputFormats = []OutputFormat{
	OutputFormatJSON,
	OutputFormatLogger,
	OutputFormatHuman,
}
View Source 
var RuntimeConfigFile = "/var/lib/cunicu.runtime.yaml"

Functions

func DecoderConfig 

func DecoderConfig(result any) *mapstructure.DecoderConfig

DecoderConfig returns the mapstructure DecoderConfig which is used by cunicu

func ExtractInterfaceOrder 

func ExtractInterfaceOrder(buf []byte) ([]string, error)

func InitDefaults 

func InitDefaults() error

func Map 

func Map(v any, tagName string) map[string]any

Types

type BaseHookSetting 

type BaseHookSetting struct {
	Type string `koanf:"type"`
}

type ChangedHandler 

type ChangedHandler interface {
	OnConfigChanged(key string, oldValue, newValue any) error
}

type Config 

type Config struct {
	*Settings
	*Meta
	*koanf.Koanf
	Runtime *runtimeSource
	Sources []Source

	// Settings which are not configurable via configuration file
	Files   []string
	Domains []string
	Watch   bool

	Providers         []koanf.Provider
	InterfaceOrder    []string
	InterfaceOrderCLI []string
	// contains filtered or unexported fields
}

func New 

func New(flags *pflag.FlagSet) *Config

New creates a new configuration instance.

func (*Config) AddProvider 

func (c *Config) AddProvider(provider koanf.Provider) error

func (*Config) AddSource 

func (c *Config) AddSource(source Source) error

func (*Config) Init 

func (c *Config) Init(args []string) (err error)

func (*Config) InterfaceFilter 

func (c *Config) InterfaceFilter(name string) bool

InterfaceFilter checks if the provided interface name is matched by any configuration.

func (*Config) InterfaceOrderByName 

func (c *Config) InterfaceOrderByName(name string) []string

InterfaceOrderByName returns a list of interface config sections which are used by a given interface

func (*Config) InterfaceSettings 

func (c *Config) InterfaceSettings(name string) (cfg *InterfaceSettings)

InterfaceSettings returns interface specific settings These settings are constructed by merging the settings of each interface section which matches the name. This behavior is quite similar to the OpenSSH client configuration file.

func (*Config) InvokeChangedHandlers 

func (c *Config) InvokeChangedHandlers(key string, change types.Change) error

func (*Config) Marshal 

func (c *Config) Marshal(wr io.Writer) error

Marshal writes the configuration in YAML format to the provided writer.

func (*Config) ReloadAllSources 

func (c *Config) ReloadAllSources() (map[string]types.Change, error)

ReloadAllSources reloads all configuration sources

func (*Config) Update 

func (c *Config) Update(sets map[string]any) (map[string]types.Change, error)

Update sets multiple settings in the provided map.

type ExecHookSetting 

type ExecHookSetting struct {
	BaseHookSetting `koanf:",squash"`
	Command         string            `koanf:"command"`
	Args            []string          `koanf:"args"`
	Env             map[string]string `koanf:"env"`
	Stdin           bool              `koanf:"stdin"`
}

type HookSetting 

type HookSetting any

type ICESettings 

type ICESettings struct {
	URLs           []url.URL           `koanf:"urls,omitempty"`
	CandidateTypes []ice.CandidateType `koanf:"candidate_types,omitempty"`
	NetworkTypes   []ice.NetworkType   `koanf:"network_types,omitempty"`
	NAT1to1IPs     []string            `koanf:"nat_1to1_ips,omitempty"`

	RelayTCP *bool `koanf:"relay_tcp,omitempty"`
	RelayTLS *bool `koanf:"relay_tls,omitempty"`

	PortRange PortRangeSettings `koanf:"port_range,omitempty"`

	Lite               bool `koanf:"lite,omitempty"`
	MDNS               bool `koanf:"mdns,omitempty"`
	MaxBindingRequests int  `koanf:"max_binding_requests,omitempty"`
	InsecureSkipVerify bool `koanf:"insecure_skip_verify,omitempty"`

	InterfaceFilter string `koanf:"interface_filter,omitempty"`

	DisconnectedTimeout time.Duration `koanf:"disconnected_timeout,omitempty"`
	FailedTimeout       time.Duration `koanf:"failed_timeout,omitempty"`

	// KeepaliveInterval used to keep candidates alive
	KeepaliveInterval time.Duration `koanf:"keepalive_interval,omitempty"`

	// CheckInterval is the interval at which the agent performs candidate checks in the connecting phase
	CheckInterval  time.Duration `koanf:"check_interval,omitempty"`
	RestartTimeout time.Duration `koanf:"restart_timeout,omitempty"`

	Username string `koanf:"username,omitempty"`
	Password string `koanf:"password,omitempty"`
}

func (*ICESettings) HasCandidateType 

func (s *ICESettings) HasCandidateType(ct ice.CandidateType) bool

func (*ICESettings) HasNetworkType 

func (s *ICESettings) HasNetworkType(nt ice.NetworkType) bool

type InterfaceSettings 

type InterfaceSettings struct {
	HostName string `koanf:"hostname,omitempty"`
	Domain   string `koanf:"domain,omitempty"`

	ExtraHosts map[string][]net.IPAddr `koanf:"extra_hosts,omitempty"`

	MTU       int          `koanf:"mtu,omitempty"`
	DNS       []net.IPAddr `koanf:"dns,omitempty"`
	Addresses []net.IPNet  `koanf:"addresses,omitempty"`
	Prefixes  []net.IPNet  `koanf:"prefixes"`
	Networks  []net.IPNet  `koanf:"networks,omitempty"`

	// Peer discovery
	Community crypto.KeyPassphrase `koanf:"community,omitempty"`
	Whitelist []crypto.Key         `koanf:"whitelist,omitempty"`
	Blacklist []crypto.Key         `koanf:"blacklist,omitempty"`

	// Endpoint discovery
	ICE            ICESettings `koanf:"ice,omitempty"`
	PortForwarding bool        `koanf:"port_forwarding,omitempty"`

	// Route sync
	RoutingTable int `koanf:"routing_table,omitempty"`

	// Hooks
	Hooks []HookSetting `koanf:"hooks,omitempty"`

	// WireGuard
	UserSpace       bool                    `koanf:"userspace,omitempty"`
	PrivateKey      crypto.Key              `koanf:"private_key,omitempty"`
	ListenPort      *int                    `koanf:"listen_port,omitempty"`
	ListenPortRange *PortRangeSettings      `koanf:"listen_port_range,omitempty"`
	FirewallMark    int                     `koanf:"fwmark,omitempty"`
	Peers           map[string]PeerSettings `koanf:"peers,omitempty"`

	// Feature flags
	DiscoverEndpoints bool `koanf:"discover_endpoints,omitempty"`
	DiscoverPeers     bool `koanf:"discover_peers,omitempty"`
	SyncConfig        bool `koanf:"sync_config,omitempty"`
	SyncRoutes        bool `koanf:"sync_routes,omitempty"`
	SyncHosts         bool `koanf:"sync_hosts,omitempty"`

	WatchConfig bool `koanf:"watch_config,omitempty"`
	WatchRoutes bool `koanf:"watch_routes,omitempty"`
}

func NewInterfaceSettingsFromConfig 

func NewInterfaceSettingsFromConfig(c *wg.Config) (*InterfaceSettings, error)

func (*InterfaceSettings) AgentConfig 

func (c *InterfaceSettings) AgentConfig(ctx context.Context, peer *crypto.Key) (*ice.AgentConfig, error)

func (*InterfaceSettings) AgentURLs 

func (c *InterfaceSettings) AgentURLs(ctx context.Context, pk *crypto.Key) ([]*stun.URI, error)

func (*InterfaceSettings) Check 

func (c *InterfaceSettings) Check() error

type LocalFileProvider 

type LocalFileProvider struct {
	*file.File
	// contains filtered or unexported fields
}

func NewLocalFileProvider 

func NewLocalFileProvider(path string) *LocalFileProvider

func (*LocalFileProvider) Order 

func (p *LocalFileProvider) Order() []string

func (*LocalFileProvider) ReadBytes 

func (p *LocalFileProvider) ReadBytes() ([]byte, error)

type LogSettings 

type LogSettings struct {
	Level  string   `koanf:"level,omitempty"`
	Rules  []string `koanf:"rules,omitempty"`
	File   string   `koanf:"file,omitempty"`
	Color  string   `koanf:"color,omitempty"`
	Banner bool     `koanf:"banner,omitempty"`
}

type LookupProvider 

type LookupProvider struct {
	// contains filtered or unexported fields
}

func NewLookupProvider 

func NewLookupProvider(domain string) *LookupProvider

func (*LookupProvider) Read 

func (p *LookupProvider) Read() (map[string]any, error)

func (*LookupProvider) ReadBytes 

func (p *LookupProvider) ReadBytes() ([]byte, error)

func (*LookupProvider) SubProviders 

func (p *LookupProvider) SubProviders() []koanf.Provider

func (*LookupProvider) Version 

func (p *LookupProvider) Version() any

func (*LookupProvider) Watch 

func (p *LookupProvider) Watch(cb func(event any, err error)) error

type Meta 

type Meta struct {
	Fields map[string]*Meta
	Parent *Meta
	Type   reflect.Type
	// contains filtered or unexported fields
}

func Metadata 

func Metadata() *Meta

func (*Meta) AddChangedHandler 

func (m *Meta) AddChangedHandler(key string, h ChangedHandler)

func (*Meta) CompletionOptions 

func (m *Meta) CompletionOptions() []string

func (*Meta) InvokeChangedHandlers 

func (m *Meta) InvokeChangedHandlers(key string, change types.Change) error

func (*Meta) Keys 

func (m *Meta) Keys() []string

func (*Meta) Lookup 

func (m *Meta) Lookup(key string) *Meta

func (*Meta) Parse 

func (m *Meta) Parse(str string) (any, error)

type Orderable 

type Orderable interface {
	Order() []string
}

type OutputFormat 

type OutputFormat string
const (
	OutputFormatJSON   OutputFormat = "json"
	OutputFormatLogger OutputFormat = "logger"
	OutputFormatHuman  OutputFormat = "human"
)

func (OutputFormat) MarshalText 

func (f OutputFormat) MarshalText() ([]byte, error)

func (*OutputFormat) Set 

func (f *OutputFormat) Set(str string) error

func (OutputFormat) String 

func (f OutputFormat) String() string

func (*OutputFormat) Type 

func (f *OutputFormat) Type() string

func (*OutputFormat) UnmarshalText 

func (f *OutputFormat) UnmarshalText(text []byte) error

type PeerSettings 

type PeerSettings struct {
	PublicKey                   crypto.Key           `koanf:"public_key,omitempty"`
	PresharedKey                crypto.Key           `koanf:"preshared_key,omitempty"`
	PresharedKeyPassphrase      crypto.KeyPassphrase `koanf:"preshared_key_passphrase,omitempty"`
	Endpoint                    string               `koanf:"endpoint,omitempty"`
	PersistentKeepaliveInterval time.Duration        `koanf:"persistent_keepalive,omitempty"`
	AllowedIPs                  []net.IPNet          `koanf:"allowed_ips,omitempty"`
}

type PortRangeSettings 

type PortRangeSettings struct {
	Min int `koanf:"min,omitempty"`
	Max int `koanf:"max,omitempty"`
}

type RPCSettings 

type RPCSettings struct {
	Socket string `koanf:"socket,omitempty"`
	Wait   bool   `koanf:"wait,omitempty"`
}

type RemoteFileProvider 

type RemoteFileProvider struct {
	// contains filtered or unexported fields
}

func NewRemoteFileProvider 

func NewRemoteFileProvider(u *url.URL) *RemoteFileProvider

func (*RemoteFileProvider) Order 

func (p *RemoteFileProvider) Order() []string

func (*RemoteFileProvider) Read 

func (p *RemoteFileProvider) Read() (map[string]interface{}, error)

func (*RemoteFileProvider) ReadBytes 

func (p *RemoteFileProvider) ReadBytes() ([]byte, error)

func (*RemoteFileProvider) Version 

func (p *RemoteFileProvider) Version() any

type Settings 

type Settings struct {
	Experimental bool `koanf:"experimental,omitempty"`

	WatchInterval time.Duration `koanf:"watch_interval,omitempty"`
	Backends      []url.URL     `koanf:"backends,omitempty"`

	Log LogSettings `koanf:"log,omitempty"`
	RPC RPCSettings `koanf:"rpc,omitempty"`

	DefaultInterfaceSettings InterfaceSettings            `koanf:",squash"`
	Interfaces               map[string]InterfaceSettings `koanf:"interfaces"`
}

func (*Settings) Check 

func (s *Settings) Check() error

Check performs plausibility checks on the provided configuration.

type Source 

type Source interface {
	Load() error
	Config() *koanf.Koanf
	Order() []string
}

type StructsProvider 

type StructsProvider struct {
	// contains filtered or unexported fields
}

func NewStructsProvider 

func NewStructsProvider(v any, t string) *StructsProvider

StructsProvider is very similar koanf's struct provider but slightly adjusted to our needs.

func (*StructsProvider) Read 

func (p *StructsProvider) Read() (map[string]any, error)

func (*StructsProvider) ReadBytes 

func (p *StructsProvider) ReadBytes() ([]byte, error)

type SubProvidable 

type SubProvidable interface {
	SubProviders() []koanf.Provider
}

type Versioned 

type Versioned interface {
	Version() any
}

type Watchable 

type Watchable interface {
	Watch(cb func(event any, err error)) error
}

type WebHookSetting 

type WebHookSetting struct {
	BaseHookSetting `koanf:",squash"`
	URL             url.URL           `koanf:"url"`
	Method          string            `koanf:"method"`
	Headers         map[string]string `koanf:"headers"`
}

type WireGuardProvider 

type WireGuardProvider struct {
	// contains filtered or unexported fields
}

func NewWireGuardProvider 

func NewWireGuardProvider() *WireGuardProvider

func (*WireGuardProvider) Order 

func (p *WireGuardProvider) Order() []string

func (*WireGuardProvider) Read 

func (p *WireGuardProvider) Read() (map[string]interface{}, error)

func (*WireGuardProvider) ReadBytes 

func (p *WireGuardProvider) ReadBytes() ([]byte, error)

Source Files

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