daxi20/AdGuardHome
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cherry-pick: upd-go

Browse Source 
Merge in DNS/adguard-home from upd-go to master

Squashed commit of the following:

commit 8edfb5cc3466c1e4ee2eacae5157bd93c135a284
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Aug 3 14:25:45 2022 +0300

    all: imp docs; fmt

commit 080b8a85c02afbdaa079c0da47cb7b6311d50fbe
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Tue Aug 2 20:51:20 2022 +0300

    all: upd go, imp generic code
This commit is contained in:
Ainar Garipov
2022-08-03 14:36:18 +03:00
committed by Ainar Garipov
parent 133cd9ef6b
commit 8166c4bc33
33 changed files with 291 additions and 313 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
internal/dhcpd/conn_unix.go
View File

@@ -16,16 +16,16 @@ import (
"github.com/insomniacslk/dhcp/dhcpv4"
"github.com/insomniacslk/dhcp/dhcpv4/server4"
"github.com/mdlayher/ethernet"
"github.com/mdlayher/raw"
"github.com/mdlayher/packet"
)
// dhcpUnicastAddr is the combination of MAC and IP addresses for responding to
// the unconfigured host.
type dhcpUnicastAddr struct {
// raw.Addr is embedded here to make *dhcpUcastAddr a net.Addr without
// packet.Addr is embedded here to make *dhcpUcastAddr a net.Addr without
// actually implementing all methods. It also contains the client's
// hardware address.
raw.Addr
packet.Addr
// yiaddr is an IP address just allocated by server for the host.
yiaddr net.IP
@@ -49,16 +49,21 @@ type dhcpConn struct {
}
// newDHCPConn creates the special connection for DHCP server.
func (s *v4Server) newDHCPConn(ifi *net.Interface) (c net.PacketConn, err error) {
// Create the raw connection.
func (s *v4Server) newDHCPConn(iface *net.Interface) (c net.PacketConn, err error) {
var ucast net.PacketConn
if ucast, err = raw.ListenPacket(ifi, uint16(ethernet.EtherTypeIPv4), nil); err != nil {
ucast, err = packet.Listen(
iface,
packet.Raw,
int(ethernet.EtherTypeIPv4),
nil,
)
if err != nil {
return nil, fmt.Errorf("creating raw udp connection: %w", err)
}
// Create the UDP connection.
var bcast net.PacketConn
bcast, err = server4.NewIPv4UDPConn(ifi.Name, &net.UDPAddr{
bcast, err = server4.NewIPv4UDPConn(iface.Name, &net.UDPAddr{
// TODO(e.burkov): Listening on zeroes makes the server handle
// requests from all the interfaces. Inspect the ways to
// specify the interface-specific listening addresses.
@@ -75,7 +80,7 @@ func (s *v4Server) newDHCPConn(ifi *net.Interface) (c net.PacketConn, err error)
udpConn: bcast,
bcastIP: s.conf.broadcastIP,
rawConn: ucast,
srcMAC: ifi.HardwareAddr,
srcMAC: iface.HardwareAddr,
srcIP: s.conf.dnsIPAddrs[0],
}, nil
}