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Fix TUN/TAP for non-Darwin platforms

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This commit is contained in:
Neil Alexander 2019-03-28 15:32:01 +00:00
parent eb22ed44ac
commit 03bc7bbcd6
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GPG Key ID: A02A2019A2BB0944
4 changed files with 32 additions and 32 deletions
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24
src/tuntap/tun_bsd.go
View File

@ -109,14 +109,14 @@ func (tun *TunAdapter) setupAddress(addr string) error {
// Create system socket
if sfd, err = unix.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0); err != nil {
tun.core.log.Printf("Create AF_INET socket failed: %v.", err)
tun.log.Printf("Create AF_INET socket failed: %v.", err)
return err
}
// Friendly output
tun.core.log.Infof("Interface name: %s", tun.iface.Name())
tun.core.log.Infof("Interface IPv6: %s", addr)
tun.core.log.Infof("Interface MTU: %d", tun.mtu)
tun.log.Infof("Interface name: %s", tun.iface.Name())
tun.log.Infof("Interface IPv6: %s", addr)
tun.log.Infof("Interface MTU: %d", tun.mtu)
// Create the MTU request
var ir in6_ifreq_mtu
@ -126,15 +126,15 @@ func (tun *TunAdapter) setupAddress(addr string) error {
// Set the MTU
if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(sfd), uintptr(syscall.SIOCSIFMTU), uintptr(unsafe.Pointer(&ir))); errno != 0 {
err = errno
tun.core.log.Errorf("Error in SIOCSIFMTU: %v", errno)
tun.log.Errorf("Error in SIOCSIFMTU: %v", errno)
// Fall back to ifconfig to set the MTU
cmd := exec.Command("ifconfig", tun.iface.Name(), "mtu", string(tun.mtu))
tun.core.log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
tun.log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.core.log.Errorf("SIOCSIFMTU fallback failed: %v.", err)
tun.core.log.Traceln(string(output))
tun.log.Errorf("SIOCSIFMTU fallback failed: %v.", err)
tun.log.Traceln(string(output))
}
}
@ -155,15 +155,15 @@ func (tun *TunAdapter) setupAddress(addr string) error {
// Set the interface address
if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(sfd), uintptr(SIOCSIFADDR_IN6), uintptr(unsafe.Pointer(&ar))); errno != 0 {
err = errno
tun.core.log.Errorf("Error in SIOCSIFADDR_IN6: %v", errno)
tun.log.Errorf("Error in SIOCSIFADDR_IN6: %v", errno)
// Fall back to ifconfig to set the address
cmd := exec.Command("ifconfig", tun.iface.Name(), "inet6", addr)
tun.core.log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
tun.log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.core.log.Errorf("SIOCSIFADDR_IN6 fallback failed: %v.", err)
tun.core.log.Traceln(string(output))
tun.log.Errorf("SIOCSIFADDR_IN6 fallback failed: %v.", err)
tun.log.Traceln(string(output))
}
}

6
src/tuntap/tun_linux.go
View File

@ -40,9 +40,9 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
}
}
// Friendly output
tun.core.log.Infof("Interface name: %s", tun.iface.Name())
tun.core.log.Infof("Interface IPv6: %s", addr)
tun.core.log.Infof("Interface MTU: %d", tun.mtu)
tun.log.Infof("Interface name: %s", tun.iface.Name())
tun.log.Infof("Interface IPv6: %s", addr)
tun.log.Infof("Interface MTU: %d", tun.mtu)
return tun.setupAddress(addr)
}

2
src/tuntap/tun_other.go
View File

@ -28,6 +28,6 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
// 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 {
tun.core.log.Warnln("Platform not supported, you must set the address of", tun.iface.Name(), "to", addr)
tun.log.Warnln("Platform not supported, you must set the address of", tun.iface.Name(), "to", addr)
return nil
}

32
src/tuntap/tun_windows.go
View File

@ -15,7 +15,7 @@ import (
// delegate the hard work to "netsh".
func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int) error {
if !iftapmode {
tun.core.log.Warnln("TUN mode is not supported on this platform, defaulting to TAP")
tun.log.Warnln("TUN mode is not supported on this platform, defaulting to TAP")
}
config := water.Config{DeviceType: water.TAP}
config.PlatformSpecificParams.ComponentID = "tap0901"
@ -31,19 +31,19 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
}
// Disable/enable the interface to resets its configuration (invalidating iface)
cmd := exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=DISABLED")
tun.core.log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
tun.log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.core.log.Errorf("Windows netsh failed: %v.", err)
tun.core.log.Traceln(string(output))
tun.log.Errorf("Windows netsh failed: %v.", err)
tun.log.Traceln(string(output))
return err
}
cmd = exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=ENABLED")
tun.core.log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
tun.log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
output, err = cmd.CombinedOutput()
if err != nil {
tun.core.log.Errorf("Windows netsh failed: %v.", err)
tun.core.log.Traceln(string(output))
tun.log.Errorf("Windows netsh failed: %v.", err)
tun.log.Traceln(string(output))
return err
}
// Get a new iface
@ -58,9 +58,9 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
panic(err)
}
// Friendly output
tun.core.log.Infof("Interface name: %s", tun.iface.Name())
tun.core.log.Infof("Interface IPv6: %s", addr)
tun.core.log.Infof("Interface MTU: %d", tun.mtu)
tun.log.Infof("Interface name: %s", tun.iface.Name())
tun.log.Infof("Interface IPv6: %s", addr)
tun.log.Infof("Interface MTU: %d", tun.mtu)
return tun.setupAddress(addr)
}
@ -71,11 +71,11 @@ func (tun *TunAdapter) setupMTU(mtu int) error {
fmt.Sprintf("interface=%s", tun.iface.Name()),
fmt.Sprintf("mtu=%d", mtu),
"store=active")
tun.core.log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
tun.log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.core.log.Errorf("Windows netsh failed: %v.", err)
tun.core.log.Traceln(string(output))
tun.log.Errorf("Windows netsh failed: %v.", err)
tun.log.Traceln(string(output))
return err
}
return nil
@ -88,11 +88,11 @@ func (tun *TunAdapter) setupAddress(addr string) error {
fmt.Sprintf("interface=%s", tun.iface.Name()),
fmt.Sprintf("addr=%s", addr),
"store=active")
tun.core.log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
tun.log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.core.log.Errorf("Windows netsh failed: %v.", err)
tun.core.log.Traceln(string(output))
tun.log.Errorf("Windows netsh failed: %v.", err)
tun.log.Traceln(string(output))
return err
}
return nil