AdGuardHome/internal/home/ipdetector.go
Eugene Burkov 3045da1742 Pull request: 2271 handle nolint
Merge in DNS/adguard-home from 2271-handle-nolint to master

Closes #2271.

Squashed commit of the following:

commit fde5c8795ac79e1f7d02ba8c8e369b5a724a000e
Merge: fc2acd898 642dcd647
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Nov 20 17:12:28 2020 +0300

    Merge branch 'master' into 2271-handle-nolint

commit fc2acd89871de08c39e80ace9e5bb8a7acb7afba
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 17 11:55:29 2020 +0300

    dnsforward: fix test output strings

commit c4ebae6ea9c293bad239519c44ca5a6c576bb921
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Nov 16 22:43:20 2020 +0300

    dnsfilter: make package pass tests

commit f2d98c6acabd8977f3b1b361987eaa31eb6eb9ad
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Nov 16 20:05:00 2020 +0300

    querylog: make decoding pass tests

commit ab5850d24c50d53b8393f2de448cc340241351d7
Merge: 6ed2066bf 8a9c6e8a0
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Nov 16 19:48:31 2020 +0300

    Merge branch 'master' into 2271-handle-nolint

commit 6ed2066bf567e13dd14cfa16fc7b109b59fa39ef
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Nov 16 18:13:45 2020 +0300

    home: fix tests naming

commit af691081fb02b7500a746b16492f01f7f9befe9a
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Nov 16 12:15:49 2020 +0300

    home: impove code quality

commit 2914cd3cd23ef2a1964116baab9187d89b377f86
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Nov 11 15:46:39 2020 +0300

    * querylog: remove useless check

commit 9996840650e784ccc76d1f29964560435ba27dc7
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Nov 11 13:18:34 2020 +0300

    * all: fix noticed defects

commit 2b15293e59337f70302fbc0db81ebb26bee0bed2
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 20:15:53 2020 +0300

    * stats: remove last nolint directive

commit b2e1ddf7b58196a2fdbf879f084edb41ca1aa1eb
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 18:35:41 2020 +0300

    * all: remove another nolint directive

commit c6fc5cfcc9c95ab9e570a95ab41c3e5c0125e62e
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 18:11:28 2020 +0300

    * querylog: remove nolint directive

commit 226ddbf2c92f737f085b44a4ddf6daec7b602153
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 16:35:26 2020 +0300

    * home: remove nolint directive

commit 2ea3086ad41e9003282add7e996ae722d72d878b
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 16:13:57 2020 +0300

    * home: reduce cyclomatic complexity of run function

commit f479b480c48e0bb832ddef8f57586f56b8a55bab
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 15:35:46 2020 +0300

    * home: use crypto/rand instead of math/rand

commit a28d4a53e3b930136b036606fc7e78404f1d208b
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 14:11:07 2020 +0300

    * dnsforward: remove gocyclo nolint directive

commit 64a0a324cc2b20614ceec3ccc6505e960fe526e9
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Nov 10 11:45:49 2020 +0300

    all *: remove some nolint directives

    Updates #2271.
2020-11-20 17:32:41 +03:00

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
}