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Add some comments, move AWDL functions to iOS-specific build tags

This commit is contained in:
Neil Alexander 2019-01-10 11:31:04 +00:00
parent a371e34a18
commit e24e859254
No known key found for this signature in database
GPG Key ID: A02A2019A2BB0944
2 changed files with 90 additions and 73 deletions

View File

@ -3,9 +3,7 @@
package yggdrasil
import (
"encoding/hex"
"encoding/json"
"errors"
"log"
"os"
"regexp"
@ -14,7 +12,6 @@ import (
hjson "github.com/hjson/hjson-go"
"github.com/mitchellh/mapstructure"
"github.com/yggdrasil-network/yggdrasil-go/src/config"
"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
"github.com/yggdrasil-network/yggdrasil-go/src/util"
)
@ -43,6 +40,7 @@ func (c *Core) addStaticPeers(cfg *config.NodeConfig) {
}
}
// Starts a node with a randomly generated config.
func (c *Core) StartAutoconfigure() error {
mobilelog := MobileLogger{}
logger := log.New(mobilelog, "", 0)
@ -64,6 +62,8 @@ func (c *Core) StartAutoconfigure() error {
return nil
}
// Starts a node with the given JSON config. You can get JSON config (rather
// than HJSON) by using the GenerateConfigJSON() function.
func (c *Core) StartJSON(configjson []byte) error {
mobilelog := MobileLogger{}
logger := log.New(mobilelog, "", 0)
@ -92,6 +92,7 @@ func (c *Core) StartJSON(configjson []byte) error {
return nil
}
// Generates mobile-friendly configuration in JSON format.
func GenerateConfigJSON() []byte {
nc := config.GenerateConfig(false)
nc.IfName = "dummy"
@ -102,90 +103,30 @@ func GenerateConfigJSON() []byte {
}
}
// Gets the node's IPv6 address.
func (c *Core) GetAddressString() string {
return c.GetAddress().String()
}
// Gets the node's IPv6 subnet in CIDR notation.
func (c *Core) GetSubnetString() string {
return c.GetSubnet().String()
}
// Wait for a packet from the router. You will use this when implementing a
// dummy adapter in place of real TUN - when this call returns a packet, you
// will probably want to give it to the OS to write to TUN.
func (c *Core) RouterRecvPacket() ([]byte, error) {
packet := <-c.router.tun.recv
return packet, nil
}
// Send a packet to the router. You will use this when implementing a
// dummy adapter in place of real TUN - when the operating system tells you
// that a new packet is available from TUN, call this function to give it to
// Yggdrasil.
func (c *Core) RouterSendPacket(buf []byte) error {
packet := append(util.GetBytes(), buf[:]...)
c.router.tun.send <- packet
return nil
}
func (c *Core) AWDLCreateInterface(boxPubKey string, sigPubKey string, name string) error {
fromAWDL := make(chan []byte, 32)
toAWDL := make(chan []byte, 32)
var boxPub crypto.BoxPubKey
var sigPub crypto.SigPubKey
boxPubHex, err := hex.DecodeString(boxPubKey)
if err != nil {
c.log.Println(err)
return err
}
sigPubHex, err := hex.DecodeString(sigPubKey)
if err != nil {
c.log.Println(err)
return err
}
copy(boxPub[:], boxPubHex)
copy(sigPub[:], sigPubHex)
if intf, err := c.awdl.create(fromAWDL, toAWDL, &boxPub, &sigPub, name); err == nil {
if intf != nil {
c.log.Println(err)
return err
} else {
c.log.Println("c.awdl.create didn't return an interface")
return errors.New("c.awdl.create didn't return an interface")
}
} else {
c.log.Println(err)
return err
}
}
func (c *Core) AWDLCreateInterfaceFromContext(context []byte, name string) error {
if len(context) < crypto.BoxPubKeyLen+crypto.SigPubKeyLen {
return errors.New("Not enough bytes in context")
}
boxPubKey := hex.EncodeToString(context[:crypto.BoxPubKeyLen])
sigPubKey := hex.EncodeToString(context[crypto.BoxPubKeyLen:])
return c.AWDLCreateInterface(boxPubKey, sigPubKey, name)
}
func (c *Core) AWDLShutdownInterface(name string) error {
return c.awdl.shutdown(name)
}
func (c *Core) AWDLRecvPacket(identity string) ([]byte, error) {
if intf := c.awdl.getInterface(identity); intf != nil {
return <-intf.toAWDL, nil
}
return nil, errors.New("AWDLRecvPacket identity not known: " + identity)
}
func (c *Core) AWDLSendPacket(identity string, buf []byte) error {
packet := append(util.GetBytes(), buf[:]...)
if intf := c.awdl.getInterface(identity); intf != nil {
intf.fromAWDL <- packet
return nil
}
return errors.New("AWDLSendPacket identity not known: " + identity)
}
func (c *Core) AWDLConnectionContext() []byte {
var context []byte
context = append(context, c.boxPub[:]...)
context = append(context, c.sigPub[:]...)
return context
}

View File

@ -12,7 +12,14 @@ void Log(const char *text) {
}
*/
import "C"
import "unsafe"
import (
"encoding/hex"
"errors"
"unsafe"
"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
"github.com/yggdrasil-network/yggdrasil-go/src/util"
)
type MobileLogger struct {
}
@ -23,3 +30,72 @@ func (nsl MobileLogger) Write(p []byte) (n int, err error) {
C.Log(cstr)
return len(p), nil
}
func (c *Core) AWDLCreateInterface(boxPubKey string, sigPubKey string, name string) error {
fromAWDL := make(chan []byte, 32)
toAWDL := make(chan []byte, 32)
var boxPub crypto.BoxPubKey
var sigPub crypto.SigPubKey
boxPubHex, err := hex.DecodeString(boxPubKey)
if err != nil {
c.log.Println(err)
return err
}
sigPubHex, err := hex.DecodeString(sigPubKey)
if err != nil {
c.log.Println(err)
return err
}
copy(boxPub[:], boxPubHex)
copy(sigPub[:], sigPubHex)
if intf, err := c.awdl.create(fromAWDL, toAWDL, &boxPub, &sigPub, name); err == nil {
if intf != nil {
c.log.Println(err)
return err
} else {
c.log.Println("c.awdl.create didn't return an interface")
return errors.New("c.awdl.create didn't return an interface")
}
} else {
c.log.Println(err)
return err
}
}
func (c *Core) AWDLCreateInterfaceFromContext(context []byte, name string) error {
if len(context) < crypto.BoxPubKeyLen+crypto.SigPubKeyLen {
return errors.New("Not enough bytes in context")
}
boxPubKey := hex.EncodeToString(context[:crypto.BoxPubKeyLen])
sigPubKey := hex.EncodeToString(context[crypto.BoxPubKeyLen:])
return c.AWDLCreateInterface(boxPubKey, sigPubKey, name)
}
func (c *Core) AWDLShutdownInterface(name string) error {
return c.awdl.shutdown(name)
}
func (c *Core) AWDLRecvPacket(identity string) ([]byte, error) {
if intf := c.awdl.getInterface(identity); intf != nil {
return <-intf.toAWDL, nil
}
return nil, errors.New("AWDLRecvPacket identity not known: " + identity)
}
func (c *Core) AWDLSendPacket(identity string, buf []byte) error {
packet := append(util.GetBytes(), buf[:]...)
if intf := c.awdl.getInterface(identity); intf != nil {
intf.fromAWDL <- packet
return nil
}
return errors.New("AWDLSendPacket identity not known: " + identity)
}
func (c *Core) AWDLConnectionContext() []byte {
var context []byte
context = append(context, c.boxPub[:]...)
context = append(context, c.sigPub[:]...)
return context
}