7e64205d44
Closes #2803.
Squashed commit of the following:
commit cb36cc8811160bb39a32fb8eddf962d0ebe9035a
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Fri Mar 12 14:21:46 2021 +0300
home: imp more
commit 9ea7ccec8bb293881cf724d7ad57e6744243d8b9
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Fri Mar 12 13:58:10 2021 +0300
all: imp naming, refactor http srv shutdown
commit f29221007c16fd3e7230bf2c1ac37b365f3e29aa
Merge: 2247c05b bfbf73f3
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Fri Mar 12 13:35:17 2021 +0300
Merge branch 'master' into 2803-shadow-4
commit 2247c05b5521346aaf362d81ccdd64fee31f1e6d
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Fri Jan 29 20:53:21 2021 +0300
home: rm var shadowing, vol. 4
74 lines
1.4 KiB
Go
74 lines
1.4 KiB
Go
package home
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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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