// transferParse parses transfer statements: 'transfer to [address...]'.
func transferParse(c *Controller) (tos, froms []string, err error) {
what := c.Val()
if !c.NextArg() {
return nil, nil, c.ArgErr()
}
value := c.Val()
switch what {
case "transfer":
if value == "to" {
tos = c.RemainingArgs()
for i, _ := range tos {
if tos[i] != "*" {
if x := net.ParseIP(tos[i]); x == nil {
return nil, nil, fmt.Errorf("must specify an IP addres: `%s'", tos[i])
}
tos[i] = middleware.Addr(tos[i]).Normalize()
}
}
}
if value == "from" {
froms = c.RemainingArgs()
for i, _ := range froms {
if froms[i] != "*" {
if x := net.ParseIP(froms[i]); x == nil {
return nil, nil, fmt.Errorf("must specify an IP addres: `%s'", froms[i])
}
froms[i] = middleware.Addr(froms[i]).Normalize()
} else {
return nil, nil, fmt.Errorf("can't use '*' in transfer from")
}
}
}
}
return
}
// isNotify checks if state is a notify message and if so, will *also* check if it
// is from one of the configured masters. If not it will not be a valid notify
// message. If the zone z is not a secondary zone the message will also be ignored.
func (z *Zone) isNotify(state middleware.State) bool {
if state.Req.Opcode != dns.OpcodeNotify {
return false
}
if len(z.TransferFrom) == 0 {
return false
}
remote := middleware.Addr(state.IP()).Normalize()
for _, from := range z.TransferFrom {
if from == remote {
return true
}
}
return false
}