mirror of
https://github.com/AdguardTeam/AdGuardHome.git
synced 2024-11-17 19:08:25 -07:00
73 lines
1.4 KiB
Go
73 lines
1.4 KiB
Go
|
package home
|
||
|
|
|
||
|
|
import "net"
|
||
|
|
|
||
|
|
// ipDetector describes IP address properties.
|
||
|
|
type ipDetector struct {
|
||
|
|
nets []*net.IPNet
|
||
|
|
}
|
||
|
|
|
||
|
|
// newIPDetector returns a new IP detector.
|
||
|
|
func newIPDetector() (ipd *ipDetector, err error) {
|
||
|
|
specialNetworks := []string{
|
||
|
|
"0.0.0.0/8",
|
||
|
|
"10.0.0.0/8",
|
||
|
|
"100.64.0.0/10",
|
||
|
|
"127.0.0.0/8",
|
||
|
|
"169.254.0.0/16",
|
||
|
|
"172.16.0.0/12",
|
||
|
|
"192.0.0.0/24",
|
||
|
|
"192.0.0.0/29",
|
||
|
|
"192.0.2.0/24",
|
||
|
|
"192.88.99.0/24",
|
||
|
|
"192.168.0.0/16",
|
||
|
|
"198.18.0.0/15",
|
||
|
|
"198.51.100.0/24",
|
||
|
|
"203.0.113.0/24",
|
||
|
|
"240.0.0.0/4",
|
||
|
|
"255.255.255.255/32",
|
||
|
|
"::1/128",
|
||
|
|
"::/128",
|
||
|
|
"64:ff9b::/96",
|
||
|
|
// Since this network is used for mapping IPv4 addresses, we
|
||
|
|
// don't include it.
|
||
|
|
// "::ffff:0:0/96",
|
||
|
|
"100::/64",
|
||
|
|
"2001::/23",
|
||
|
|
"2001::/32",
|
||
|
|
"2001:2::/48",
|
||
|
|
"2001:db8::/32",
|
||
|
|
"2001:10::/28",
|
||
|
|
"2002::/16",
|
||
|
|
"fc00::/7",
|
||
|
|
"fe80::/10",
|
||
|
|
}
|
||
|
|
|
||
|
|
ipd = &ipDetector{
|
||
|
|
nets: make([]*net.IPNet, len(specialNetworks)),
|
||
|
|
}
|
||
|
|
for i, ipnetStr := range specialNetworks {
|
||
|
|
_, ipnet, err := net.ParseCIDR(ipnetStr)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
ipd.nets[i] = ipnet
|
||
|
|
}
|
||
|
|
|
||
|
|
return ipd, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// detectSpecialNetwork returns true if IP address is contained by any of
|
||
|
|
// special-purpose IP address registries according to RFC-6890
|
||
|
|
// (https://tools.ietf.org/html/rfc6890).
|
||
|
|
func (ipd *ipDetector) detectSpecialNetwork(ip net.IP) bool {
|
||
|
|
for _, ipnet := range ipd.nets {
|
||
|
|
if ipnet.Contains(ip) {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return false
|
||
|
|
}
|