AdGuardHome/internal/dnsforward/dns64.go

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Pull request: 5117-dns64 Merge in DNS/adguard-home from 5117-dns64 to master Updates #5117. Squashed commit of the following: commit 757d689134b85bdac9a6f5e43249866ec09ab7e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 19:06:18 2023 +0300 all: imp fmt commit b7a73c68c0b40bd3bda520c045c8110975c1827a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 17:49:21 2023 +0300 all: rm unused, imp code commit 548feb6bd27b9774a9453d0570d37cdf557d4c3a Merge: de3e84b5 54a141ab Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 14:08:12 2023 +0300 Merge branch 'master' into 5117-dns64 commit de3e84b52b8dbff70df3ca0ac3315c3d33576334 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 12:04:48 2023 +0300 dnsforward: imp code commit a580e92119e3dbadc8b1a6572dbecc679f69db40 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:24:33 2023 +0400 dnsforward: try again commit 67b7a365194939fe15e4907a3dc2fee44b019d08 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:08:23 2023 +0400 dnsforward: fix test on linux commit ca83e4178a3383e326bf528d209d8766fb3c60d3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:37:48 2023 +0400 dnsforward: imp naming commit c4e477c7a12af4966cbcd4e5f003a72966dc5d61 Merge: 42aa42a8 6e803375 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:30:03 2023 +0400 Merge branch 'master' into 5117-dns64 commit 42aa42a8149b6bb42eb0da6e88ede4b5065bbf2f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:26:54 2023 +0400 dnsforward: imp test commit 4e91c675703f1453456ef9eea08157009ce6237a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 18 12:32:55 2023 +0400 dnsforward: imp code, docs, add test commit 766ef757f61e7a555b8151b4783fa7aba5f566f7 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 16:36:35 2023 +0400 dnsforward: imp docs commit 6825f372389988597d1879cf66342c410f3cfd47 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 14:33:33 2023 +0400 internal: imp code, docs commit 1215316a338496b5bea2b20d697c7451bfbcc84b Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 13 21:24:50 2023 +0400 all: add dns64 support
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package dnsforward
import (
"net"
"net/netip"
"github.com/AdguardTeam/dnsproxy/proxy"
)
// setupDNS64 initializes DNS64 settings, the NAT64 prefixes in particular. If
// the DNS64 feature is enabled and no prefixes are configured, the default
// Well-Known Prefix is used, just like Section 5.2 of RFC 6147 prescribes. Any
// configured set of prefixes discards the default Well-Known prefix unless it
// is specified explicitly. Each prefix also validated to be a valid IPv6
// CIDR with a maximum length of 96 bits. The first specified prefix is then
// used to synthesize AAAA records.
func (s *Server) setupDNS64() {
Pull request: 5117-dns64 Merge in DNS/adguard-home from 5117-dns64 to master Updates #5117. Squashed commit of the following: commit 757d689134b85bdac9a6f5e43249866ec09ab7e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 19:06:18 2023 +0300 all: imp fmt commit b7a73c68c0b40bd3bda520c045c8110975c1827a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 17:49:21 2023 +0300 all: rm unused, imp code commit 548feb6bd27b9774a9453d0570d37cdf557d4c3a Merge: de3e84b5 54a141ab Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 14:08:12 2023 +0300 Merge branch 'master' into 5117-dns64 commit de3e84b52b8dbff70df3ca0ac3315c3d33576334 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 12:04:48 2023 +0300 dnsforward: imp code commit a580e92119e3dbadc8b1a6572dbecc679f69db40 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:24:33 2023 +0400 dnsforward: try again commit 67b7a365194939fe15e4907a3dc2fee44b019d08 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:08:23 2023 +0400 dnsforward: fix test on linux commit ca83e4178a3383e326bf528d209d8766fb3c60d3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:37:48 2023 +0400 dnsforward: imp naming commit c4e477c7a12af4966cbcd4e5f003a72966dc5d61 Merge: 42aa42a8 6e803375 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:30:03 2023 +0400 Merge branch 'master' into 5117-dns64 commit 42aa42a8149b6bb42eb0da6e88ede4b5065bbf2f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:26:54 2023 +0400 dnsforward: imp test commit 4e91c675703f1453456ef9eea08157009ce6237a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 18 12:32:55 2023 +0400 dnsforward: imp code, docs, add test commit 766ef757f61e7a555b8151b4783fa7aba5f566f7 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 16:36:35 2023 +0400 dnsforward: imp docs commit 6825f372389988597d1879cf66342c410f3cfd47 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 14:33:33 2023 +0400 internal: imp code, docs commit 1215316a338496b5bea2b20d697c7451bfbcc84b Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 13 21:24:50 2023 +0400 all: add dns64 support
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if !s.conf.UseDNS64 {
return
Pull request: 5117-dns64 Merge in DNS/adguard-home from 5117-dns64 to master Updates #5117. Squashed commit of the following: commit 757d689134b85bdac9a6f5e43249866ec09ab7e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 19:06:18 2023 +0300 all: imp fmt commit b7a73c68c0b40bd3bda520c045c8110975c1827a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 17:49:21 2023 +0300 all: rm unused, imp code commit 548feb6bd27b9774a9453d0570d37cdf557d4c3a Merge: de3e84b5 54a141ab Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 14:08:12 2023 +0300 Merge branch 'master' into 5117-dns64 commit de3e84b52b8dbff70df3ca0ac3315c3d33576334 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 12:04:48 2023 +0300 dnsforward: imp code commit a580e92119e3dbadc8b1a6572dbecc679f69db40 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:24:33 2023 +0400 dnsforward: try again commit 67b7a365194939fe15e4907a3dc2fee44b019d08 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:08:23 2023 +0400 dnsforward: fix test on linux commit ca83e4178a3383e326bf528d209d8766fb3c60d3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:37:48 2023 +0400 dnsforward: imp naming commit c4e477c7a12af4966cbcd4e5f003a72966dc5d61 Merge: 42aa42a8 6e803375 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:30:03 2023 +0400 Merge branch 'master' into 5117-dns64 commit 42aa42a8149b6bb42eb0da6e88ede4b5065bbf2f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:26:54 2023 +0400 dnsforward: imp test commit 4e91c675703f1453456ef9eea08157009ce6237a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 18 12:32:55 2023 +0400 dnsforward: imp code, docs, add test commit 766ef757f61e7a555b8151b4783fa7aba5f566f7 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 16:36:35 2023 +0400 dnsforward: imp docs commit 6825f372389988597d1879cf66342c410f3cfd47 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 14:33:33 2023 +0400 internal: imp code, docs commit 1215316a338496b5bea2b20d697c7451bfbcc84b Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 13 21:24:50 2023 +0400 all: add dns64 support
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}
if len(s.conf.DNS64Prefixes) == 0 {
// dns64WellKnownPref is the default prefix to use in an algorithmic
// mapping for DNS64.
//
// See https://datatracker.ietf.org/doc/html/rfc6052#section-2.1.
dns64WellKnownPref := netip.MustParsePrefix("64:ff9b::/96")
Pull request: 5117-dns64 Merge in DNS/adguard-home from 5117-dns64 to master Updates #5117. Squashed commit of the following: commit 757d689134b85bdac9a6f5e43249866ec09ab7e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 19:06:18 2023 +0300 all: imp fmt commit b7a73c68c0b40bd3bda520c045c8110975c1827a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 17:49:21 2023 +0300 all: rm unused, imp code commit 548feb6bd27b9774a9453d0570d37cdf557d4c3a Merge: de3e84b5 54a141ab Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 14:08:12 2023 +0300 Merge branch 'master' into 5117-dns64 commit de3e84b52b8dbff70df3ca0ac3315c3d33576334 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 12:04:48 2023 +0300 dnsforward: imp code commit a580e92119e3dbadc8b1a6572dbecc679f69db40 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:24:33 2023 +0400 dnsforward: try again commit 67b7a365194939fe15e4907a3dc2fee44b019d08 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:08:23 2023 +0400 dnsforward: fix test on linux commit ca83e4178a3383e326bf528d209d8766fb3c60d3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:37:48 2023 +0400 dnsforward: imp naming commit c4e477c7a12af4966cbcd4e5f003a72966dc5d61 Merge: 42aa42a8 6e803375 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:30:03 2023 +0400 Merge branch 'master' into 5117-dns64 commit 42aa42a8149b6bb42eb0da6e88ede4b5065bbf2f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:26:54 2023 +0400 dnsforward: imp test commit 4e91c675703f1453456ef9eea08157009ce6237a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 18 12:32:55 2023 +0400 dnsforward: imp code, docs, add test commit 766ef757f61e7a555b8151b4783fa7aba5f566f7 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 16:36:35 2023 +0400 dnsforward: imp docs commit 6825f372389988597d1879cf66342c410f3cfd47 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 14:33:33 2023 +0400 internal: imp code, docs commit 1215316a338496b5bea2b20d697c7451bfbcc84b Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 13 21:24:50 2023 +0400 all: add dns64 support
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s.dns64Pref = dns64WellKnownPref
} else {
s.dns64Pref = s.conf.DNS64Prefixes[0]
Pull request: 5117-dns64 Merge in DNS/adguard-home from 5117-dns64 to master Updates #5117. Squashed commit of the following: commit 757d689134b85bdac9a6f5e43249866ec09ab7e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 19:06:18 2023 +0300 all: imp fmt commit b7a73c68c0b40bd3bda520c045c8110975c1827a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 17:49:21 2023 +0300 all: rm unused, imp code commit 548feb6bd27b9774a9453d0570d37cdf557d4c3a Merge: de3e84b5 54a141ab Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 14:08:12 2023 +0300 Merge branch 'master' into 5117-dns64 commit de3e84b52b8dbff70df3ca0ac3315c3d33576334 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 12:04:48 2023 +0300 dnsforward: imp code commit a580e92119e3dbadc8b1a6572dbecc679f69db40 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:24:33 2023 +0400 dnsforward: try again commit 67b7a365194939fe15e4907a3dc2fee44b019d08 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:08:23 2023 +0400 dnsforward: fix test on linux commit ca83e4178a3383e326bf528d209d8766fb3c60d3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:37:48 2023 +0400 dnsforward: imp naming commit c4e477c7a12af4966cbcd4e5f003a72966dc5d61 Merge: 42aa42a8 6e803375 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:30:03 2023 +0400 Merge branch 'master' into 5117-dns64 commit 42aa42a8149b6bb42eb0da6e88ede4b5065bbf2f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:26:54 2023 +0400 dnsforward: imp test commit 4e91c675703f1453456ef9eea08157009ce6237a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 18 12:32:55 2023 +0400 dnsforward: imp code, docs, add test commit 766ef757f61e7a555b8151b4783fa7aba5f566f7 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 16:36:35 2023 +0400 dnsforward: imp docs commit 6825f372389988597d1879cf66342c410f3cfd47 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 14:33:33 2023 +0400 internal: imp code, docs commit 1215316a338496b5bea2b20d697c7451bfbcc84b Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 13 21:24:50 2023 +0400 all: add dns64 support
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}
}
// mapDNS64 maps ip to IPv6 address using configured DNS64 prefix. ip must be a
// valid IPv4. It panics, if there are no configured DNS64 prefixes, because
// synthesis should not be performed unless DNS64 function enabled.
func (s *Server) mapDNS64(ip netip.Addr) (mapped net.IP) {
// Don't mask the address here since it should have already been masked on
// initialization stage.
pref := s.dns64Pref.Masked().Addr().As16()
Pull request: 5117-dns64 Merge in DNS/adguard-home from 5117-dns64 to master Updates #5117. Squashed commit of the following: commit 757d689134b85bdac9a6f5e43249866ec09ab7e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 19:06:18 2023 +0300 all: imp fmt commit b7a73c68c0b40bd3bda520c045c8110975c1827a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 17:49:21 2023 +0300 all: rm unused, imp code commit 548feb6bd27b9774a9453d0570d37cdf557d4c3a Merge: de3e84b5 54a141ab Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 14:08:12 2023 +0300 Merge branch 'master' into 5117-dns64 commit de3e84b52b8dbff70df3ca0ac3315c3d33576334 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 12:04:48 2023 +0300 dnsforward: imp code commit a580e92119e3dbadc8b1a6572dbecc679f69db40 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:24:33 2023 +0400 dnsforward: try again commit 67b7a365194939fe15e4907a3dc2fee44b019d08 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:08:23 2023 +0400 dnsforward: fix test on linux commit ca83e4178a3383e326bf528d209d8766fb3c60d3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:37:48 2023 +0400 dnsforward: imp naming commit c4e477c7a12af4966cbcd4e5f003a72966dc5d61 Merge: 42aa42a8 6e803375 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:30:03 2023 +0400 Merge branch 'master' into 5117-dns64 commit 42aa42a8149b6bb42eb0da6e88ede4b5065bbf2f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:26:54 2023 +0400 dnsforward: imp test commit 4e91c675703f1453456ef9eea08157009ce6237a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 18 12:32:55 2023 +0400 dnsforward: imp code, docs, add test commit 766ef757f61e7a555b8151b4783fa7aba5f566f7 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 16:36:35 2023 +0400 dnsforward: imp docs commit 6825f372389988597d1879cf66342c410f3cfd47 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 14:33:33 2023 +0400 internal: imp code, docs commit 1215316a338496b5bea2b20d697c7451bfbcc84b Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 13 21:24:50 2023 +0400 all: add dns64 support
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ipData := ip.As4()
mapped = make(net.IP, net.IPv6len)
copy(mapped[:proxy.NAT64PrefixLength], pref[:])
copy(mapped[proxy.NAT64PrefixLength:], ipData[:])
Pull request: 5117-dns64 Merge in DNS/adguard-home from 5117-dns64 to master Updates #5117. Squashed commit of the following: commit 757d689134b85bdac9a6f5e43249866ec09ab7e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 19:06:18 2023 +0300 all: imp fmt commit b7a73c68c0b40bd3bda520c045c8110975c1827a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 17:49:21 2023 +0300 all: rm unused, imp code commit 548feb6bd27b9774a9453d0570d37cdf557d4c3a Merge: de3e84b5 54a141ab Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 14:08:12 2023 +0300 Merge branch 'master' into 5117-dns64 commit de3e84b52b8dbff70df3ca0ac3315c3d33576334 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Jan 23 12:04:48 2023 +0300 dnsforward: imp code commit a580e92119e3dbadc8b1a6572dbecc679f69db40 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:24:33 2023 +0400 dnsforward: try again commit 67b7a365194939fe15e4907a3dc2fee44b019d08 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 18:08:23 2023 +0400 dnsforward: fix test on linux commit ca83e4178a3383e326bf528d209d8766fb3c60d3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:37:48 2023 +0400 dnsforward: imp naming commit c4e477c7a12af4966cbcd4e5f003a72966dc5d61 Merge: 42aa42a8 6e803375 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:30:03 2023 +0400 Merge branch 'master' into 5117-dns64 commit 42aa42a8149b6bb42eb0da6e88ede4b5065bbf2f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 20 17:26:54 2023 +0400 dnsforward: imp test commit 4e91c675703f1453456ef9eea08157009ce6237a Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 18 12:32:55 2023 +0400 dnsforward: imp code, docs, add test commit 766ef757f61e7a555b8151b4783fa7aba5f566f7 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 16:36:35 2023 +0400 dnsforward: imp docs commit 6825f372389988597d1879cf66342c410f3cfd47 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jan 17 14:33:33 2023 +0400 internal: imp code, docs commit 1215316a338496b5bea2b20d697c7451bfbcc84b Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jan 13 21:24:50 2023 +0400 all: add dns64 support
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return mapped
}