3a67cc2c45
Merge in DNS/adguard-home from mk-aghnet to master
Updates #2829.
Squashed commit of the following:
commit 519806c04b8d0517aacce9c31f2d06ab56631937
Merge: 92376c86 97361234
Author: Eugene Burkov <e.burkov@adguard.com>
Date: Tue Mar 16 19:13:56 2021 +0300
Merge branch 'master' into mk-aghnet
commit 92376c8665e529191aa482432f9d5e3e2e3afdc8
Author: Eugene Burkov <e.burkov@adguard.com>
Date: Tue Mar 16 18:37:22 2021 +0300
aghnet: fix linux
commit 7f36d19b0e650d4e4fc5cf9ea4b501a7f636abeb
Author: Eugene Burkov <e.burkov@adguard.com>
Date: Tue Mar 16 18:08:30 2021 +0300
aghnet: mv network utils from util
commit aa68c70c1146b8c32303c6e037953a41aa7d72f9
Author: Eugene Burkov <e.burkov@adguard.com>
Date: Tue Mar 16 17:30:06 2021 +0300
aghnet: mv ipDetector here
commit b033657f5c5ee91f869c36508a5eb15976a174a0
Author: Eugene Burkov <e.burkov@adguard.com>
Date: Tue Mar 16 17:24:07 2021 +0300
all: mk aghnet package, rename sysutil package
74 lines
1.4 KiB
Go
74 lines
1.4 KiB
Go
package aghnet
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import "net"
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// IPDetector describes IP address properties.
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type IPDetector struct {
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nets []*net.IPNet
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}
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// NewIPDetector returns a new IP detector.
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func NewIPDetector() (ipd *IPDetector, err error) {
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specialNetworks := []string{
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"0.0.0.0/8",
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"10.0.0.0/8",
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"100.64.0.0/10",
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"127.0.0.0/8",
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"169.254.0.0/16",
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"172.16.0.0/12",
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"192.0.0.0/24",
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"192.0.0.0/29",
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"192.0.2.0/24",
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"192.88.99.0/24",
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"192.168.0.0/16",
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"198.18.0.0/15",
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"198.51.100.0/24",
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"203.0.113.0/24",
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"240.0.0.0/4",
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"255.255.255.255/32",
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"::1/128",
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"::/128",
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"64:ff9b::/96",
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// Since this network is used for mapping IPv4 addresses, we
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// don't include it.
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// "::ffff:0:0/96",
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"100::/64",
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"2001::/23",
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"2001::/32",
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"2001:2::/48",
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"2001:db8::/32",
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"2001:10::/28",
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"2002::/16",
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"fc00::/7",
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"fe80::/10",
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}
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ipd = &IPDetector{
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nets: make([]*net.IPNet, len(specialNetworks)),
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}
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for i, ipnetStr := range specialNetworks {
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var ipnet *net.IPNet
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_, ipnet, err = net.ParseCIDR(ipnetStr)
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if err != nil {
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return nil, err
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}
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ipd.nets[i] = ipnet
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}
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return ipd, nil
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}
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// DetectSpecialNetwork returns true if IP address is contained by any of
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// special-purpose IP address registries according to RFC-6890
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// (https://tools.ietf.org/html/rfc6890).
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func (ipd *IPDetector) DetectSpecialNetwork(ip net.IP) bool {
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for _, ipnet := range ipd.nets {
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if ipnet.Contains(ip) {
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return true
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}
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}
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return false
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}
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