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Pull request: 2582 invalid hostname vol.3

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Merge in DNS/adguard-home from 2582-zero-byte to master

Updates #2582.

Squashed commit of the following:

commit 88db23f26cd6ee9978310c7030f6866b9ef58785
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Mar 11 13:01:02 2021 +0300

    dhcpd: rm temporary workaround
This commit is contained in:
Eugene Burkov 2021-03-11 14:01:48 +03:00
parent c08bf86b71
commit 94e21e69af
4 changed files with 6 additions and 15 deletions
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2
go.mod
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@ -16,7 +16,7 @@ require (
github.com/gobuffalo/packr/v2 v2.8.1 // indirect
github.com/google/go-cmp v0.5.5 // indirect
github.com/hugelgupf/socketpair v0.0.0-20190730060125-05d35a94e714
github.com/insomniacslk/dhcp v0.0.0-20210306224058-018caddcb1eb
github.com/insomniacslk/dhcp v0.0.0-20210310193751-cfd4d47082c2
github.com/kardianos/service v1.2.0
github.com/karrick/godirwalk v1.16.1 // indirect
github.com/lucas-clemente/quic-go v0.19.3

4
go.sum
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@ -216,8 +216,8 @@ github.com/hugelgupf/socketpair v0.0.0-20190730060125-05d35a94e714/go.mod h1:2Go
github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/insomniacslk/dhcp v0.0.0-20210306224058-018caddcb1eb h1:IlbQi/Y9BmwqtsT+IfctERmRQcNsw4HvLAOSx16GseY=
github.com/insomniacslk/dhcp v0.0.0-20210306224058-018caddcb1eb/go.mod h1:TKl4jN3Voofo4UJIicyNhWGp/nlQqQkFxmwIFTvBkKI=
github.com/insomniacslk/dhcp v0.0.0-20210310193751-cfd4d47082c2 h1:NpTIlXznCStsY88jU+Gh1Dy5dt/jYV4z4uU8h2TUOt4=
github.com/insomniacslk/dhcp v0.0.0-20210310193751-cfd4d47082c2/go.mod h1:TKl4jN3Voofo4UJIicyNhWGp/nlQqQkFxmwIFTvBkKI=
github.com/jellevandenhooff/dkim v0.0.0-20150330215556-f50fe3d243e1/go.mod h1:E0B/fFc00Y+Rasa88328GlI/XbtyysCtTHZS8h7IrBU=
github.com/jessevdk/go-flags v1.4.0 h1:4IU2WS7AumrZ/40jfhf4QVDMsQwqA7VEHozFRrGARJA=
github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=

12
internal/dhcpd/v4.go
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@ -7,7 +7,6 @@ import (
"encoding/binary"
"fmt"
"net"
"strings"
"sync"
"time"
@ -464,16 +463,7 @@ func (s *v4Server) processRequest(req, resp *dhcpv4.DHCPv4) (*Lease, bool) {
}
if lease.Expiry.Unix() != leaseExpireStatic {
// The trimming is required since some devices include trailing
// zero-byte in DHCP option length calculation.
//
// See https://github.com/AdguardTeam/AdGuardHome/issues/2582.
//
// TODO(e.burkov): Remove after the trimming for hostname option
// will be added into github.com/insomniacslk/dhcp module.
hostnameStr := strings.TrimRight(string(hostname), "\x00")
lease.Hostname = hostnameStr
lease.Hostname = string(hostname)
s.commitLease(lease)
} else if len(lease.Hostname) != 0 {
o := &optFQDN{

3
internal/dhcpd/v6.go
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@ -46,7 +46,8 @@ func ip6InRange(start, ip net.IP) bool {
if len(start) != 16 {
return false
}
//lint:ignore SA1021 TODO(e.burkov): Ignore this for now, think about using masks.
//lint:ignore SA1021 TODO(e.burkov): Ignore this for now, think about
// using masks.
if !bytes.Equal(start[:15], ip[:15]) {
return false
}