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Update Windows module a bit - capture TAP setup errors earlier, refer to newer version of water which should fix #456

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This commit is contained in:
Neil Alexander 2019-07-19 22:21:30 +01:00
parent 85881c04fa
commit 1a5c2a4942
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GPG Key ID: A02A2019A2BB0944
3 changed files with 48 additions and 20 deletions
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11
go.mod
View File

@ -8,9 +8,10 @@ require (
github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0
github.com/mitchellh/mapstructure v1.1.2
github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091
github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9
golang.org/x/net v0.0.0-20181207154023-610586996380
golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e
golang.org/x/text v0.3.0
github.com/yggdrasil-network/water v0.0.0-20190719211521-a76871ea954b
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
golang.org/x/net v0.0.0-20190628185345-da137c7871d7
golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7
golang.org/x/text v0.3.2
golang.org/x/tools v0.0.0-20190719005602-e377ae9d6386 // indirect
)

13
go.sum
View File

@ -14,11 +14,24 @@ github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091 h1:1zN6ImoqhSJhN8h
github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091/go.mod h1:N20Z5Y8oye9a7HmytmZ+tr8Q2vlP0tAHP13kTHzwvQY=
github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae h1:MYCANF1kehCG6x6G+/9txLfq6n3lS5Vp0Mxn1hdiBAc=
github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae/go.mod h1:R0SBCsugm+Sf1katgTb2t7GXMm+nRIv43tM4VDZbaOs=
github.com/yggdrasil-network/water v0.0.0-20190719211521-a76871ea954b/go.mod h1:R0SBCsugm+Sf1katgTb2t7GXMm+nRIv43tM4VDZbaOs=
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0=
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/net v0.0.0-20181207154023-610586996380 h1:zPQexyRtNYBc7bcHmehl1dH6TB3qn8zytv8cBGLDNY0=
golang.org/x/net v0.0.0-20181207154023-610586996380/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e h1:njOxP/wVblhCLIUhjHXf6X+dzTt5OQ3vMQo9mkOIKIo=
golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190719005602-e377ae9d6386/go.mod h1:jcCCGcm9btYwXyDqrUWc6MKQKKGJCWEQ3AfLSRIbEuI=

44
src/tuntap/tun_windows.go
View File

@ -1,6 +1,7 @@
package tuntap
import (
"errors"
"fmt"
"os/exec"
"strings"
@ -27,23 +28,13 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
}
iface, err := water.New(config)
if err != nil {
panic(err)
}
// Disable/enable the interface to resets its configuration (invalidating iface)
cmd := exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=DISABLED")
tun.log.Debugln("netsh command:", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.log.Errorln("Windows netsh failed:", err)
tun.log.Traceln(string(output))
return err
}
cmd = exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=ENABLED")
tun.log.Debugln("netsh command:", strings.Join(cmd.Args, " "))
output, err = cmd.CombinedOutput()
if err != nil {
tun.log.Errorln("Windows netsh failed:", err)
tun.log.Traceln(string(output))
if iface.Name() == "" {
return errors.New("unable to find TAP adapter with component ID " + config.PlatformSpecificParams.ComponentID)
}
// Reset the adapter - this invalidates iface so we'll need to get a new one
if err := tun.resetAdapter(); err != nil {
return err
}
// Get a new iface
@ -64,6 +55,29 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
return tun.setupAddress(addr)
}
// Disable/enable the interface to reset its configuration (invalidating iface).
func (tun *TunAdapter) resetAdapter() error {
// Bring down the interface first
cmd := exec.Command("netsh", "interface", "set", "interface", tun.iface.Name(), "admin=DISABLED")
tun.log.Debugln("netsh command:", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
if err != nil {
tun.log.Errorln("Windows netsh failed:", err)
tun.log.Traceln(string(output))
return err
}
// Bring the interface back up
cmd = exec.Command("netsh", "interface", "set", "interface", tun.iface.Name(), "admin=ENABLED")
tun.log.Debugln("netsh command:", strings.Join(cmd.Args, " "))
output, err = cmd.CombinedOutput()
if err != nil {
tun.log.Errorln("Windows netsh failed:", err)
tun.log.Traceln(string(output))
return err
}
return nil
}
// Sets the MTU of the TAP adapter.
func (tun *TunAdapter) setupMTU(mtu int) error {
// Set MTU