Add dummy tun, helper functions

src/yggdrasil/ios.go

@@ -1,51 +0,0 @@
-// +build mobile
-
-package yggdrasil
-
-import (
-	"log"
-	"os"
-	"regexp"
-
-	"github.com/yggdrasil-network/yggdrasil-go/src/config"
-)
-
-// This file is meant to "plug the gap" for Gomobile support, as Gomobile
-// will not create headers for Swift/Obj-C if they have complex (read: non-
-// native) types. Therefore for iOS we will expose some nice simple functions
-// to do what we need to do.
-
-func (c *Core) StartAutoconfigure() error {
-	logger := log.New(os.Stdout, "", 0)
-	//logger.Println("Created logger")
-	//c := Core{}
-	//logger.Println("Created Core")
-	nc := config.GenerateConfig(true)
-	//logger.Println("Generated config")
-	nc.IfName = "none"
-	nc.AdminListen = "tcp://[::]:9001"
-	nc.Peers = []string{}
-	//logger.Println("Set some config options")
-	ifceExpr, err := regexp.Compile(".*")
-	if err == nil {
-		c.ifceExpr = append(c.ifceExpr, ifceExpr)
-	}
-	//logger.Println("Added multicast interface")
-	if err := c.Start(nc, logger); err != nil {
-		return err
-	}
-	//logger.Println("Started")
-	address := c.GetAddress()
-	subnet := c.GetSubnet()
-	logger.Printf("Your IPv6 address is %s", address.String())
-	logger.Printf("Your IPv6 subnet is %s", subnet.String())
-	return nil
-}
-
-func (c *Core) GetAddressString() string {
-	return c.GetAddress().String()
-}
-
-func (c *Core) GetSubetString() string {
-	return c.GetSubnet().String()
-}

src/yggdrasil/mobile.go

@@ -0,0 +1,56 @@
+// +build mobile
+
+package yggdrasil
+
+import (
+	"log"
+	"os"
+	"regexp"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
+	"github.com/yggdrasil-network/yggdrasil-go/src/util"
+)
+
+// This file is meant to "plug the gap" for mobile support, as Gomobile will
+// not create headers for Swift/Obj-C etc if they have complex (non-native)
+// types. Therefore for iOS we will expose some nice simple functions. Note
+// that in the case of iOS we handle reading/writing to/from TUN in Swift
+// therefore we use the "dummy" TUN interface instead.
+
+func (c *Core) StartAutoconfigure() error {
+	logger := log.New(os.Stdout, "", 0)
+	nc := config.GenerateConfig(true)
+	nc.IfName = "dummy"
+	nc.AdminListen = "tcp://[::]:9001"
+	nc.Peers = []string{}
+	if hostname, err := os.Hostname(); err == nil {
+		nc.NodeInfo = map[string]interface{}{"name": hostname}
+	}
+	ifceExpr, err := regexp.Compile(".*")
+	if err == nil {
+		c.ifceExpr = append(c.ifceExpr, ifceExpr)
+	}
+	if err := c.Start(nc, logger); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (c *Core) GetAddressString() string {
+	return c.GetAddress().String()
+}
+
+func (c *Core) GetSubnetString() string {
+	return c.GetSubnet().String()
+}
+
+func (c *Core) RouterRecvPacket() ([]byte, error) {
+	packet := <-c.router.tun.recv
+	return packet, nil
+}
+
+func (c *Core) RouterSendPacket(buf []byte) error {
+	packet := append(util.GetBytes(), buf[:]...)
+	c.router.tun.send <- packet
+	return nil
+}

src/yggdrasil/tun.go

@@ -47,11 +47,13 @@ func (tun *tunAdapter) init(core *Core, send chan<- []byte, recv <-chan []byte)
 // Starts the setup process for the TUN/TAP adapter, and if successful, starts
 // the read/write goroutines to handle packets on that interface.
 func (tun *tunAdapter) start(ifname string, iftapmode bool, addr string, mtu int) error {
-	if ifname == "none" {
-		return nil
+	if ifname != "none" {
+		if err := tun.setup(ifname, iftapmode, addr, mtu); err != nil {
+			return err
+		}
 	}
-	if err := tun.setup(ifname, iftapmode, addr, mtu); err != nil {
-		return err
+	if ifname == "none" || ifname == "dummy" {
+		return nil
 	}
 	tun.mutex.Lock()
 	tun.isOpen = true

src/yggdrasil/tun_darwin.go

@@ -1,3 +1,5 @@
+// +build !mobile
+
 package yggdrasil
 
 // The darwin platform specific tun parts

src/yggdrasil/tun_dummy.go

@@ -0,0 +1,19 @@
+// +build mobile
+
+package yggdrasil
+
+// This is to catch unsupported platforms
+// If your platform supports tun devices, you could try configuring it manually
+
+// Creates the TUN/TAP adapter, if supported by the Water library. Note that
+// no guarantees are made at this point on an unsupported platform.
+func (tun *tunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int) error {
+	tun.mtu = getSupportedMTU(mtu)
+	return tun.setupAddress(addr)
+}
+
+// We don't know how to set the IPv6 address on an unknown platform, therefore
+// write about it to stdout and don't try to do anything further.
+func (tun *tunAdapter) setupAddress(addr string) error {
+	return nil
+}

src/yggdrasil/tun_linux.go

@@ -1,3 +1,5 @@
+// +build !mobile
+
 package yggdrasil
 
 // The linux platform specific tun parts

src/yggdrasil/tun_other.go

@@ -1,4 +1,4 @@
-// +build !linux,!darwin,!windows,!openbsd,!freebsd,!netbsd
+// +build !linux,!darwin,!windows,!openbsd,!freebsd,!netbsd,!mobile
 
 package yggdrasil