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Pull request 1861: 4923-gopacket-dhcp vol.1

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Merge in DNS/adguard-home from 4923-gopacket-dhcp to master

Updates #4923.

Squashed commit of the following:

commit edf36ce8b1873272c3daebe8cc8f8132793aac44
Merge: a17513d3e 123ca8738
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Jun 22 14:14:39 2023 +0300

    Merge branch 'master' into 4923-gopacket-dhcp

commit a17513d3e0a9e596d56444dfa46478eee15631de
Merge: f04727c29 994906fbd
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Jun 21 17:49:09 2023 +0300

    Merge branch 'master' into 4923-gopacket-dhcp

commit f04727c29eaf22f9eb53f3aa33d42d00e177b224
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Jun 20 15:42:31 2023 +0300

    home: revert clients container

commit c58284ac6b5b2274da5eed2e853847d757709e5b
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Jun 19 21:10:36 2023 +0300

    all: imp code, names, docs

commit 4c4613c939e1325d11655822d9dbc3f05a6d203c
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Jun 13 18:51:12 2023 +0300

    all: imp code

commit 0b4a6e0dd561d9b7bb78dea21dcc947bcd0bd583
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Jun 7 18:40:15 2023 +0300

    all: imp api

commit 0425edea03d6ca0859657df683bef6ec45bfc399
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Jun 5 15:57:23 2023 +0300

    dhcpsvc: introduce package

commit 5628ebe6cccf91e2c48778966730bcbbe9e1d9f2
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Jun 1 17:49:12 2023 +0300

    WIP
This commit is contained in:
Eugene Burkov
2023-06-22 14:18:43 +03:00
parent 123ca87388
commit f40ef76c79
10 changed files with 324 additions and 104 deletions
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21
internal/dnsforward/dnsforward.go
View File

@@ -48,12 +48,33 @@ var webRegistered bool
// hostToIPTable is a convenient type alias for tables of host names to an IP
// address.
//
// TODO(e.burkov): Use the [DHCP] interface instead.
type hostToIPTable = map[string]netip.Addr
// ipToHostTable is a convenient type alias for tables of IP addresses to their
// host names. For example, for use with PTR queries.
//
// TODO(e.burkov): Use the [DHCP] interface instead.
type ipToHostTable = map[netip.Addr]string
// DHCP is an interface for accesing DHCP lease data needed in this package.
type DHCP interface {
// HostByIP returns the hostname of the DHCP client with the given IP
// address. The address will be netip.Addr{} if there is no such client,
// due to an assumption that a DHCP client must always have an IP address.
HostByIP(ip netip.Addr) (host string)
// IPByHost returns the IP address of the DHCP client with the given
// hostname. The hostname will be an empty string if there is no such
// client, due to an assumption that a DHCP client must always have a
// hostname, either set by the client or assigned automatically.
IPByHost(host string) (ip netip.Addr)
// Enabled returns true if DHCP provides information about clients.
Enabled() (ok bool)
}
// Server is the main way to start a DNS server.
//
// Example: