mirror of
https://github.com/m13253/dns-over-https.git
synced 2024-09-21 15:57:11 +00:00
131 lines
4.1 KiB
Go
131 lines
4.1 KiB
Go
/*
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DNS-over-HTTPS
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Copyright (C) 2017-2018 Star Brilliant <m13253@hotmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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package jsondns
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import (
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"net"
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"github.com/infobloxopen/go-trees/iptree"
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)
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var defaultFilter *iptree.Tree
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func init() {
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defaultFilter = iptree.NewTree()
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// RFC6890
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// This host on this network
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{0, 0, 0, 0},
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Mask: net.IPMask{255, 0, 0, 0},
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}, struct{}{})
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// Private-Use Networks
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{10, 0, 0, 0},
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Mask: net.IPMask{255, 0, 0, 0},
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}, struct{}{})
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// Shared Address Space
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{100, 64, 0, 0},
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Mask: net.IPMask{255, 192, 0, 0},
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}, struct{}{})
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// Loopback
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{127, 0, 0, 0},
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Mask: net.IPMask{255, 0, 0, 0},
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}, struct{}{})
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// Link Local
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{169, 254, 0, 0},
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Mask: net.IPMask{255, 255, 0, 0},
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}, struct{}{})
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// Private-Use Networks
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{172, 16, 0, 0},
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Mask: net.IPMask{255, 240, 0, 0},
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}, struct{}{})
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// DS-Lite
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{192, 0, 0, 0},
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Mask: net.IPMask{255, 255, 255, 248},
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}, struct{}{})
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// 6to4 Relay Anycast
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{192, 88, 99, 0},
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Mask: net.IPMask{255, 255, 255, 0},
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}, struct{}{})
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// Private-Use Networks
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{192, 168, 0, 0},
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Mask: net.IPMask{255, 255, 0, 0},
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}, struct{}{})
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// Reserved for Future Use & Limited Broadcast
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{240, 0, 0, 0},
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Mask: net.IPMask{240, 0, 0, 0},
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}, struct{}{})
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// RFC6890
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// Unspecified & Loopback Address
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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Mask: net.IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe},
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}, struct{}{})
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// Discard-Only Prefix
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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Mask: net.IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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}, struct{}{})
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// Unique-Local
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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Mask: net.IPMask{0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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}, struct{}{})
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// Linked-Scoped Unicast
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defaultFilter.InplaceInsertNet(&net.IPNet{
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IP: net.IP{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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Mask: net.IPMask{0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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}, struct{}{})
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}
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func IsGlobalIP(ip net.IP) bool {
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if ip == nil {
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return false
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}
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_, contained := defaultFilter.GetByIP(ip)
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return !contained
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}
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