Michael Bridgen
e8e86dadc0
* In general we'll have an IP address and a subnet mask for the weave network address; account for this in the zone DB and in the HTTP server. * Use the net.IP type rather than string, which gives us a bit more generality (in theory it'll deal with Ipv6 too) and validation (we attempt to parse the input)
56 lines
1.0 KiB
Go
56 lines
1.0 KiB
Go
package weavedns
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import (
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"github.com/miekg/dns"
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"log"
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"net"
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"sync"
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)
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type Zone interface {
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AddRecord(string, net.IP, net.IP, *net.IPNet) error
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MatchLocal(string) (net.IP, error)
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}
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type Record struct {
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Name string
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Ip net.IP
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WeaveIp net.IP
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Subnet *net.IPNet
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}
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type ZoneDb struct {
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mx sync.RWMutex
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recs []Record
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}
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type LookupError string
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func (ops LookupError) Error() string {
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return string(ops)
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}
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// Stop gap.
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func (zone *ZoneDb) match(name string) (net.IP, error) {
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for _, r := range zone.recs {
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log.Printf("%s == %s ?", r.Name, name)
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if r.Name == name {
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return r.WeaveIp, nil
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}
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}
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return nil, LookupError(name)
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}
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func (zone *ZoneDb) MatchLocal(name string) (net.IP, error) {
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zone.mx.Lock()
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defer zone.mx.Unlock()
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return zone.match(name)
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}
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func (zone *ZoneDb) AddRecord(name string, ip net.IP, weave_ip net.IP, weave_subnet *net.IPNet) error {
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zone.mx.Lock()
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defer zone.mx.Unlock()
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zone.recs = append(zone.recs, Record{dns.Fqdn(name), ip, weave_ip, weave_subnet})
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return nil
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}
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