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Allow sane defaults on setTunTap

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This commit is contained in:
Neil Alexander 2018-02-28 15:27:58 +00:00
parent fdd32b9571
commit ebc4eacee4
1 changed files with 4 additions and 6 deletions
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10
src/yggdrasil/admin.go
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@ -64,21 +64,19 @@ func (a *admin) init(c *Core, listenaddr string) {
} }
}) })
a.addHandler("setTunTap", []string{"<ifname|auto|none>", "[<tun|tap>]", "[<mtu>]"}, func(out *[]byte, ifparams ...string) { a.addHandler("setTunTap", []string{"<ifname|auto|none>", "[<tun|tap>]", "[<mtu>]"}, func(out *[]byte, ifparams ...string) {
// Check parameters
if (ifparams[0] != "none" && len(ifparams) != 3) ||
(ifparams[0] == "none" && len(ifparams) != 1) {
*out = []byte("Invalid number of parameters given\n")
return
}
// Set sane defaults // Set sane defaults
iftapmode := false iftapmode := false
ifmtu := 1280 ifmtu := 1280
var err error var err error
// Check we have enough params for TAP mode
if len(ifparams) > 1 { if len(ifparams) > 1 {
// Is it a TAP adapter? // Is it a TAP adapter?
if ifparams[1] == "tap" { if ifparams[1] == "tap" {
iftapmode = true iftapmode = true
} }
}
// Check we have enough params for MTU
if len(ifparams) > 2 {
// Make sure the MTU is sane // Make sure the MTU is sane
ifmtu, err = strconv.Atoi(ifparams[2]) ifmtu, err = strconv.Atoi(ifparams[2])
if err != nil || ifmtu < 1280 || ifmtu > 65535 { if err != nil || ifmtu < 1280 || ifmtu > 65535 {