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Rearrange public interface, godoc improvements

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This commit is contained in:
Neil Alexander 2019-03-29 18:05:17 +00:00
parent 399e1a2ffe
commit b5ac65cacb
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GPG Key ID: A02A2019A2BB0944
4 changed files with 99 additions and 97 deletions
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22
src/tuntap/tun.go
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@ -65,6 +65,28 @@ func (tun *TunAdapter) IsTAP() bool {
return tun.iface.IsTAP()
}
// Gets the default TUN/TAP interface name for your platform.
func DefaultName() string {
return defaults.GetDefaults().DefaultIfName
}
// Gets the default TUN/TAP interface MTU for your platform. This can be as high
// as 65535, depending on platform, but is never lower than 1280.
func DefaultMTU() int {
return defaults.GetDefaults().DefaultIfMTU
}
// Gets the default TUN/TAP interface mode for your platform.
func DefaultIsTAP() bool {
return defaults.GetDefaults().DefaultIfTAPMode
}
// Gets the maximum supported TUN/TAP interface MTU for your platform. This
// can be as high as 65535, depending on platform, but is never lower than 1280.
func MaximumMTU() int {
return defaults.GetDefaults().MaximumIfMTU
}
// Initialises the TUN/TAP adapter.
func (tun *TunAdapter) Init(config *config.NodeState, log *log.Logger, send chan<- []byte, recv <-chan []byte, reject <-chan yggdrasil.RejectedPacket) {
tun.config = config

18
src/yggdrasil/adapter.go
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@ -6,10 +6,12 @@ import (
"github.com/yggdrasil-network/yggdrasil-go/src/config"
)
// Defines the minimum required struct members for an adapter type (this is
// now the base type for TunAdapter in tun.go)
// Defines the minimum required struct members for an adapter type. This is now
// the base type for adapters like tun.go. When implementing a new adapter type,
// you should extend the adapter struct with this one and should call the
// Adapter.Init() function when initialising.
type Adapter struct {
adapterImplementation
AdapterImplementation
Core *Core
Send chan<- []byte
Recv <-chan []byte
@ -17,8 +19,9 @@ type Adapter struct {
Reconfigure chan chan error
}
// Defines the minimum required functions for an adapter type
type adapterImplementation interface {
// Defines the minimum required functions for an adapter type. Note that the
// implementation of Init() should call Adapter.Init().
type AdapterImplementation interface {
Init(*config.NodeState, *log.Logger, chan<- []byte, <-chan []byte, <-chan RejectedPacket)
Name() string
MTU() int
@ -29,7 +32,10 @@ type adapterImplementation interface {
Close() error
}
// Initialises the adapter.
// Initialises the adapter with the necessary channels to operate from the
// router. When defining a new Adapter type, the Adapter should call this
// function from within it's own Init function to set up the channels. It is
// otherwise not expected for you to call this function directly.
func (adapter *Adapter) Init(config *config.NodeState, log *log.Logger, send chan<- []byte, recv <-chan []byte, reject <-chan RejectedPacket) {
log.Traceln("Adapter setup - given channels:", send, recv)
adapter.Send = send

154
src/yggdrasil/core.go
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@ -11,7 +11,6 @@ import (
"github.com/yggdrasil-network/yggdrasil-go/src/address"
"github.com/yggdrasil-network/yggdrasil-go/src/config"
"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
)
var buildName string
@ -89,7 +88,7 @@ func (c *Core) init() error {
// be reconnected with.
func (c *Core) addPeerLoop() {
for {
// Get the peers from the config - these could change!
// the peers from the config - these could change!
current, _ := c.config.Get()
// Add peers from the Peers section
@ -111,8 +110,9 @@ func (c *Core) addPeerLoop() {
}
}
// UpdateConfig updates the configuration in Core and then signals the
// various module goroutines to reconfigure themselves if needed
// UpdateConfig updates the configuration in Core with the provided
// config.NodeConfig and then signals the various module goroutines to
// reconfigure themselves if needed.
func (c *Core) UpdateConfig(config *config.NodeConfig) {
c.log.Infoln("Reloading configuration...")
@ -148,33 +148,37 @@ func (c *Core) UpdateConfig(config *config.NodeConfig) {
}
}
// GetBuildName gets the current build name. This is usually injected if built
// BuildName gets the current build name. This is usually injected if built
// from git, or returns "unknown" otherwise.
func GetBuildName() string {
func BuildName() string {
if buildName == "" {
return "unknown"
}
return buildName
}
// Get the current build version. This is usually injected if built from git,
// or returns "unknown" otherwise.
func GetBuildVersion() string {
// BuildVersion gets the current build version. This is usually injected if
// built from git, or returns "unknown" otherwise.
func BuildVersion() string {
if buildVersion == "" {
return "unknown"
}
return buildVersion
}
// Set the router adapter
func (c *Core) SetRouterAdapter(adapter adapterImplementation) {
// SetRouterAdapter instructs Yggdrasil to use the given adapter when starting
// the router. The adapter must implement the standard
// adapter.AdapterImplementation interface and should extend the adapter.Adapter
// struct.
func (c *Core) SetRouterAdapter(adapter AdapterImplementation) {
c.router.adapter = adapter
}
// Starts up Yggdrasil using the provided NodeState, and outputs debug logging
// through the provided log.Logger. The started stack will include TCP and UDP
// sockets, a multicast discovery socket, an admin socket, router, switch and
// DHT node.
// Start starts up Yggdrasil using the provided config.NodeConfig, and outputs
// debug logging through the provided log.Logger. The started stack will include
// TCP and UDP sockets, a multicast discovery socket, an admin socket, router,
// switch and DHT node. A config.NodeState is returned which contains both the
// current and previous configurations (from reconfigures).
func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) (*config.NodeState, error) {
c.log = log
@ -183,10 +187,10 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) (*config.NodeState,
Previous: *nc,
}
if name := GetBuildName(); name != "unknown" {
if name := BuildName(); name != "unknown" {
c.log.Infoln("Build name:", name)
}
if version := GetBuildVersion(); version != "unknown" {
if version := BuildVersion(); version != "unknown" {
c.log.Infoln("Build version:", version)
}
@ -233,7 +237,7 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) (*config.NodeState,
return &c.config, nil
}
// Stops the Yggdrasil node.
// Stop shuts down the Yggdrasil node.
func (c *Core) Stop() {
c.log.Infoln("Stopping...")
if c.router.adapter != nil {
@ -242,72 +246,78 @@ func (c *Core) Stop() {
c.admin.close()
}
// ListenOn starts a new listener
// ListenTCP starts a new TCP listener. The input URI should match that of the
// "Listen" configuration item, e.g.
// tcp://a.b.c.d:e
func (c *Core) ListenTCP(uri string) (*TcpListener, error) {
return c.link.tcp.listen(uri)
}
// Generates a new encryption keypair. The encryption keys are used to
// encrypt traffic and to derive the IPv6 address/subnet of the node.
// NewEncryptionKeys generates a new encryption keypair. The encryption keys are
// used to encrypt traffic and to derive the IPv6 address/subnet of the node.
func (c *Core) NewEncryptionKeys() (*crypto.BoxPubKey, *crypto.BoxPrivKey) {
return crypto.NewBoxKeys()
}
// Generates a new signing keypair. The signing keys are used to derive the
// structure of the spanning tree.
// NewSigningKeys generates a new signing keypair. The signing keys are used to
// derive the structure of the spanning tree.
func (c *Core) NewSigningKeys() (*crypto.SigPubKey, *crypto.SigPrivKey) {
return crypto.NewSigKeys()
}
// Gets the node ID.
func (c *Core) GetNodeID() *crypto.NodeID {
return crypto.GetNodeID(&c.boxPub)
// NodeID gets the node ID.
func (c *Core) NodeID() *crypto.NodeID {
return crypto.NodeID(&c.boxPub)
}
// Gets the tree ID.
func (c *Core) GetTreeID() *crypto.TreeID {
return crypto.GetTreeID(&c.sigPub)
// TreeID gets the tree ID.
func (c *Core) TreeID() *crypto.TreeID {
return crypto.TreeID(&c.sigPub)
}
// Gets the IPv6 address of the Yggdrasil node. This is always a /128.
func (c *Core) GetAddress() *net.IP {
address := net.IP(address.AddrForNodeID(c.GetNodeID())[:])
// Address gets the IPv6 address of the Yggdrasil node. This is always a /128
// address.
func (c *Core) Address() *net.IP {
address := net.IP(address.AddrForNodeID(c.NodeID())[:])
return &address
}
// Gets the routed IPv6 subnet of the Yggdrasil node. This is always a /64.
func (c *Core) GetSubnet() *net.IPNet {
subnet := address.SubnetForNodeID(c.GetNodeID())[:]
// Subnet gets the routed IPv6 subnet of the Yggdrasil node. This is always a
// /64 subnet.
func (c *Core) Subnet() *net.IPNet {
subnet := address.SubnetForNodeID(c.NodeID())[:]
subnet = append(subnet, 0, 0, 0, 0, 0, 0, 0, 0)
return &net.IPNet{IP: subnet, Mask: net.CIDRMask(64, 128)}
}
// GetRouterAddresses returns the raw address and subnet types as used by the
// RouterAddresses returns the raw address and subnet types as used by the
// router
func (c *Core) GetRouterAddresses() (address.Address, address.Subnet) {
func (c *Core) RouterAddresses() (address.Address, address.Subnet) {
return c.router.addr, c.router.subnet
}
// Gets the nodeinfo.
func (c *Core) GetNodeInfo() nodeinfoPayload {
// NodeInfo gets the currently configured nodeinfo.
func (c *Core) NodeInfo() nodeinfoPayload {
return c.router.nodeinfo.getNodeInfo()
}
// Sets the nodeinfo.
// SetNodeInfo the lcal nodeinfo. Note that nodeinfo can be any value or struct,
// it will be serialised into JSON automatically.
func (c *Core) SetNodeInfo(nodeinfo interface{}, nodeinfoprivacy bool) {
c.router.nodeinfo.setNodeInfo(nodeinfo, nodeinfoprivacy)
}
// Sets the output logger of the Yggdrasil node after startup. This may be
// useful if you want to redirect the output later.
// SetLogger sets the output logger of the Yggdrasil node after startup. This
// may be useful if you want to redirect the output later.
func (c *Core) SetLogger(log *log.Logger) {
c.log = log
}
// Adds a peer. This should be specified in the peer URI format, i.e.
// tcp://a.b.c.d:e, udp://a.b.c.d:e, socks://a.b.c.d:e/f.g.h.i:j. This adds the
// peer to the peer list, so that they will be called again if the connection
// drops.
// AddPeer adds a peer. This should be specified in the peer URI format, e.g.:
// tcp://a.b.c.d:e
// socks://a.b.c.d:e/f.g.h.i:j
// This adds the peer to the peer list, so that they will be called again if the
// connection drops.
func (c *Core) AddPeer(addr string, sintf string) error {
if err := c.CallPeer(addr, sintf); err != nil {
return err
@ -322,54 +332,18 @@ func (c *Core) AddPeer(addr string, sintf string) error {
return nil
}
// Calls a peer. This should be specified in the peer URI format, i.e.
// tcp://a.b.c.d:e, udp://a.b.c.d:e, socks://a.b.c.d:e/f.g.h.i:j. This calls the
// peer once, and if the connection drops, it won't be called again.
// CallPeer calls a peer once. This should be specified in the peer URI format,
// e.g.:
// tcp://a.b.c.d:e
// socks://a.b.c.d:e/f.g.h.i:j
// This does not add the peer to the peer list, so if the connection drops, the
// peer will not be called again automatically.
func (c *Core) CallPeer(addr string, sintf string) error {
return c.link.call(addr, sintf)
}
// Adds an allowed public key. This allow peerings to be restricted only to
// keys that you have selected.
// AddAllowedEncryptionPublicKey adds an allowed public key. This allow peerings
// to be restricted only to keys that you have selected.
func (c *Core) AddAllowedEncryptionPublicKey(boxStr string) error {
return c.admin.addAllowedEncryptionPublicKey(boxStr)
}
// Gets the default admin listen address for your platform.
func (c *Core) GetAdminDefaultListen() string {
return defaults.GetDefaults().DefaultAdminListen
}
// Gets the default TUN/TAP interface name for your platform.
func (c *Core) GetTUNDefaultIfName() string {
return defaults.GetDefaults().DefaultIfName
}
// Gets the default TUN/TAP interface MTU for your platform. This can be as high
// as 65535, depending on platform, but is never lower than 1280.
func (c *Core) GetTUNDefaultIfMTU() int {
return defaults.GetDefaults().DefaultIfMTU
}
// Gets the maximum supported TUN/TAP interface MTU for your platform. This
// can be as high as 65535, depending on platform, but is never lower than 1280.
func (c *Core) GetTUNMaximumIfMTU() int {
return defaults.GetDefaults().MaximumIfMTU
}
// Gets the default TUN/TAP interface mode for your platform.
func (c *Core) GetTUNDefaultIfTAPMode() bool {
return defaults.GetDefaults().DefaultIfTAPMode
}
// Gets the current TUN/TAP interface name.
func (c *Core) GetTUNIfName() string {
//return c.router.tun.iface.Name()
return c.router.adapter.Name()
}
// Gets the current TUN/TAP interface MTU.
func (c *Core) GetTUNIfMTU() int {
//return c.router.tun.mtu
return c.router.adapter.MTU()
}

2
src/yggdrasil/router.go
View File

@ -41,7 +41,7 @@ type router struct {
in <-chan []byte // packets we received from the network, link to peer's "out"
out func([]byte) // packets we're sending to the network, link to peer's "in"
toRecv chan router_recvPacket // packets to handle via recvPacket()
adapter adapterImplementation // TUN/TAP adapter
adapter AdapterImplementation // TUN/TAP adapter
recv chan<- []byte // place where the adapter pulls received packets from
send <-chan []byte // place where the adapter puts outgoing packets
reject chan<- RejectedPacket // place where we send error packets back to adapter