diff --git a/misc/tests/tunbench-client.go b/misc/tests/tunbench-client.go index 9e60679..2358ae4 100644 --- a/misc/tests/tunbench-client.go +++ b/misc/tests/tunbench-client.go @@ -7,7 +7,7 @@ import ( "os/exec" "time" - "github.com/neilalexander/water" + "github.com/yggdrasil-network/water" ) const mtu = 65535 diff --git a/misc/tests/tunbench-server.go b/misc/tests/tunbench-server.go index 288cea2..53a9a31 100644 --- a/misc/tests/tunbench-server.go +++ b/misc/tests/tunbench-server.go @@ -6,7 +6,7 @@ import ( "net" "os/exec" - "github.com/neilalexander/water" + "github.com/yggdrasil-network/water" ) const mtu = 65535 diff --git a/misc/tests/tunbench.go b/misc/tests/tunbench.go index ac9205e..dbd0a9d 100644 --- a/misc/tests/tunbench.go +++ b/misc/tests/tunbench.go @@ -6,7 +6,7 @@ import ( "net" "os/exec" - "github.com/neilalexander/water" + "github.com/yggdrasil-network/water" ) const mtu = 65535 diff --git a/src/yggdrasil/tun_darwin.go b/src/yggdrasil/tun_darwin.go index f16ed7c..94a63de 100644 --- a/src/yggdrasil/tun_darwin.go +++ b/src/yggdrasil/tun_darwin.go @@ -8,7 +8,7 @@ import "strconv" import "encoding/binary" import "golang.org/x/sys/unix" -import water "github.com/neilalexander/water" +import water "github.com/yggdrasil-network/water" func getDefaults() tunDefaultParameters { return tunDefaultParameters{ diff --git a/src/yggdrasil/tun_freebsd.go b/src/yggdrasil/tun_freebsd.go new file mode 100644 index 0000000..dd4a35f --- /dev/null +++ b/src/yggdrasil/tun_freebsd.go @@ -0,0 +1,138 @@ +package yggdrasil + +import "os/exec" +import "unsafe" +//import "syscall" +import "golang.org/x/sys/unix" + +import water "github.com/yggdrasil-network/water" + +// This is to catch FreeBSD and NetBSD + +func getDefaults() tunDefaultParameters { + return tunDefaultParameters{ + maximumIfMTU: 32767, + defaultIfMTU: 32767, + defaultIfName: "/dev/tap0", + defaultIfTAPMode: true, + } +} + +// Warning! When porting this to other BSDs, the tuninfo struct can appear with +// the fields in a different order, and the consts below might also have +// different values + +/* +FreeBSD/NetBSD, net/if_tun.h: + +struct tuninfo { + int baudrate; + short mtu; + u_char type; + u_char dummy; +}; +*/ + +type tuninfo struct { + tun_baudrate int32 + tun_mtu int16 + tun_type uint8 + tun_dummy uint8 +} + +const TUNSIFINFO = (0x80000000) | ((8 & 0x1fff) << 16) | uint32(byte('t'))<<8 | 91 +const TUNGIFINFO = (0x40000000) | ((8 & 0x1fff) << 16) | uint32(byte('t'))<<8 | 92 +const TUNSIFHEAD = (0x80000000) | ((4 & 0x1fff) << 16) | uint32(byte('t'))<<8 | 96 +const SIOCAIFADDR_IN6 = (0x80000000) | ((4 & 0x1fff) << 16) | uint32(byte('i'))<<8 | 27 + +// Below this point seems to be fairly standard at least... + +type in6_addrlifetime struct { + ia6t_expire float64 + ia6t_preferred float64 + ia6t_vltime uint32 + ia6t_pltime uint32 +} + +type sockaddr_in6 struct { + sin6_len uint8 + sin6_family uint8 + sin6_port uint8 + sin6_flowinfo uint32 + sin6_addr [8]uint16 + sin6_scope_id uint32 +} + +type in6_aliasreq struct { + ifra_name [16]byte + ifra_addr sockaddr_in6 + ifra_dstaddr sockaddr_in6 + ifra_prefixmask sockaddr_in6 + ifra_flags uint32 + ifra_lifetime in6_addrlifetime +} + +func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error { + var config water.Config + if ifname[:4] == "auto" { + ifname = "/dev/tap0" + } + if len(ifname) < 9 { + panic("TUN/TAP name must be in format /dev/tunX or /dev/tapX") + } + switch { + case iftapmode || ifname[:8] == "/dev/tap": + config = water.Config{DeviceType: water.TAP} + case !iftapmode || ifname[:8] == "/dev/tun": + //config = water.Config{DeviceType: water.TUN} + panic("TUN mode is not currently supported on this platform, please use TAP instead") + default: + panic("TUN/TAP name must be in format /dev/tunX or /dev/tapX") + } + config.Name = ifname + iface, err := water.New(config) + if err != nil { + panic(err) + } + tun.iface = iface + tun.mtu = getSupportedMTU(mtu) + return tun.setupAddress(addr) +} + +func (tun *tunDevice) setupAddress(addr string) error { + fd := tun.iface.FD().Fd() + var err error + var ti tuninfo + + tun.core.log.Printf("Interface name: %s", tun.iface.Name()) + tun.core.log.Printf("Interface IPv6: %s", addr) + tun.core.log.Printf("Interface MTU: %d", tun.mtu) + + // Get the existing interface flags + if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(fd), uintptr(TUNGIFINFO), uintptr(unsafe.Pointer(&ti))); errno != 0 { + err = errno + tun.core.log.Printf("Error in TUNGIFINFO: %v", errno) + return err + } + + // Set the new MTU + ti.tun_mtu = int16(tun.mtu) + + // Set the new interface flags + if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(fd), uintptr(TUNSIFINFO), uintptr(unsafe.Pointer(&ti))); errno != 0 { + err = errno + tun.core.log.Printf("Error in TUNSIFINFO: %v", errno) + return err + } + + // Set address + cmd := exec.Command("ifconfig", tun.iface.Name(), "inet6", addr) + //tun.core.log.Printf("ifconfig command: %v", strings.Join(cmd.Args, " ")) + output, err := cmd.CombinedOutput() + if err != nil { + tun.core.log.Printf("ifconfig failed: %v.", err) + tun.core.log.Println(string(output)) + } + + return nil +} diff --git a/src/yggdrasil/tun_linux.go b/src/yggdrasil/tun_linux.go index 1d4380a..28cccda 100644 --- a/src/yggdrasil/tun_linux.go +++ b/src/yggdrasil/tun_linux.go @@ -7,7 +7,7 @@ import "errors" import "fmt" import "net" -import water "github.com/neilalexander/water" +import water "github.com/yggdrasil-network/water" import "github.com/docker/libcontainer/netlink" diff --git a/src/yggdrasil/tun_openbsd.go b/src/yggdrasil/tun_openbsd.go index 22db206..cb80599 100644 --- a/src/yggdrasil/tun_openbsd.go +++ b/src/yggdrasil/tun_openbsd.go @@ -1,5 +1,3 @@ -// +build openbsd - package yggdrasil import "os/exec" @@ -7,7 +5,7 @@ import "unsafe" import "syscall" import "golang.org/x/sys/unix" -import water "github.com/neilalexander/water" +import water "github.com/yggdrasil-network/water" // This is to catch OpenBSD @@ -28,11 +26,22 @@ func getDefaults() tunDefaultParameters { // the fields in a different order, and the consts below might also have // different values +/* +OpenBSD, net/if_tun.h: + +struct tuninfo { + u_int mtu; + u_short type; + u_short flags; + u_int baudrate; +}; +*/ + type tuninfo struct { - tun_mtu uint16 - tun_type uint32 - tun_flags uint32 - tun_dummy uint16 + tun_mtu uint32 + tun_type uint16 + tun_flags uint16 + tun_baudrate uint32 } const TUNSIFINFO = (0x80000000) | ((12 & 0x1fff) << 16) | uint32(byte('t'))<<8 | 91 @@ -79,7 +88,7 @@ func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) config = water.Config{DeviceType: water.TAP} case !iftapmode || ifname[:8] == "/dev/tun": // config = water.Config{DeviceType: water.TUN} - panic("TUN mode is not currently supported on OpenBSD, please use TAP instead") + panic("TUN mode is not currently supported on this platform, please use TAP instead") default: panic("TUN/TAP name must be in format /dev/tunX or /dev/tapX") } @@ -111,7 +120,7 @@ func (tun *tunDevice) setupAddress(addr string) error { //tun.core.log.Printf("TUNGIFINFO: %+v", ti) // Set the new MTU - ti.tun_mtu = uint16(tun.mtu) + ti.tun_mtu = uint32(tun.mtu) // Set the new interface flags ti.tun_flags |= syscall.IFF_UP diff --git a/src/yggdrasil/tun_other.go b/src/yggdrasil/tun_other.go index ddaa09c..7b1f46e 100644 --- a/src/yggdrasil/tun_other.go +++ b/src/yggdrasil/tun_other.go @@ -1,8 +1,8 @@ -// +build !linux,!darwin,!windows,!openbsd +// +build !linux,!darwin,!windows,!openbsd,!freebsd package yggdrasil -import water "github.com/neilalexander/water" +import water "github.com/yggdrasil-network/water" // This is to catch unsupported platforms // If your platform supports tun devices, you could try configuring it manually diff --git a/src/yggdrasil/tun_windows.go b/src/yggdrasil/tun_windows.go index 80890f8..bfd5579 100644 --- a/src/yggdrasil/tun_windows.go +++ b/src/yggdrasil/tun_windows.go @@ -1,6 +1,6 @@ package yggdrasil -import water "github.com/neilalexander/water" +import water "github.com/yggdrasil-network/water" import "os/exec" import "strings" import "fmt"