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+ control, dns, client: add ability to set DNS upstream per domain

This commit is contained in:
Aleksey Dmitrevskiy 2019-03-20 14:24:33 +03:00
parent 6f56eb4c12
commit 9ea5c1abe1
10 changed files with 200 additions and 49 deletions
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1
client/src/__locales/en.json
View File

@ -122,6 +122,7 @@
"example_upstream_doh": "encrypted <a href='https:\/\/en.wikipedia.org\/wiki\/DNS_over_HTTPS' target='_blank'>DNS-over-HTTPS<\/a>",
"example_upstream_sdns": "you can use <a href='https:\/\/dnscrypt.info\/stamps\/' target='_blank'>DNS Stamps<\/a> for <a href='https:\/\/dnscrypt.info\/' target='_blank'>DNSCrypt<\/a> or <a href='https:\/\/en.wikipedia.org\/wiki\/DNS_over_HTTPS' target='_blank'>DNS-over-HTTPS<\/a> resolvers",
"example_upstream_tcp": "regular DNS (over TCP)",
"example_upstream_reserved": "you can specify DNS upstream <a href='https:\/\/github.com\/AdguardTeam\/dnsproxy#specifying-upstreams-for-domains' target='_blank'>for a specific domain(s)<\/a>",
"all_filters_up_to_date_toast": "All filters are already up-to-date",
"updated_upstream_dns_toast": "Updated the upstream DNS servers",
"dns_test_ok_toast": "Specified DNS servers are working correctly",

3
client/src/components/Settings/Upstream/Examples.js
View File

@ -21,6 +21,9 @@ const Examples = props => (
<li>
<code>sdns://...</code> - <span dangerouslySetInnerHTML={{ __html: props.t('example_upstream_sdns') }} />
</li>
<li>
<code>[/host.com/]1.1.1.1</code> - <span dangerouslySetInnerHTML={{ __html: props.t('example_upstream_reserved') }} />
</li>
</ol>
</div>
);

5
client/src/components/Settings/Upstream/Form.js
View File

@ -7,6 +7,7 @@ import flow from 'lodash/flow';
import classnames from 'classnames';
import { renderSelectField } from '../../../helpers/form';
import Examples from './Examples';
let Form = (props) => {
const {
@ -55,6 +56,10 @@ let Form = (props) => {
/>
</div>
</div>
<div className="col-12">
<Examples />
<hr/>
</div>
<div className="col-12">
<div className="form__group">
<label className="form__label" htmlFor="bootstrap_dns">

3
client/src/components/Settings/Upstream/index.js
View File

@ -3,7 +3,6 @@ import PropTypes from 'prop-types';
import { withNamespaces } from 'react-i18next';
import Form from './Form';
import Examples from './Examples';
import Card from '../../ui/Card';
class Upstream extends Component {
@ -44,8 +43,6 @@ class Upstream extends Component {
processingTestUpstream={processingTestUpstream}
processingSetUpstream={processingSetUpstream}
/>
<hr/>
<Examples />
</div>
</div>
</Card>

96
control.go
View File

@ -18,6 +18,7 @@ import (
"github.com/AdguardTeam/AdGuardHome/dnsforward"
"github.com/AdguardTeam/dnsproxy/upstream"
"github.com/AdguardTeam/golibs/log"
"github.com/AdguardTeam/golibs/utils"
"github.com/miekg/dns"
govalidator "gopkg.in/asaskevich/govalidator.v4"
)
@ -317,12 +318,11 @@ func handleSetUpstreamConfig(w http.ResponseWriter, r *http.Request) {
return
}
for _, u := range newconfig.Upstreams {
if err = validateUpstream(u); err != nil {
httpError(w, http.StatusBadRequest, "%s can not be used as upstream cause: %s", u, err)
err = validateUpstreams(newconfig.Upstreams)
if err != nil {
httpError(w, http.StatusBadRequest, "wrong upstreams specification: %s", err)
return
}
}
config.DNS.UpstreamDNS = defaultDNS
if len(newconfig.Upstreams) > 0 {
@ -346,18 +346,81 @@ func handleSetUpstreamConfig(w http.ResponseWriter, r *http.Request) {
httpUpdateConfigReloadDNSReturnOK(w, r)
}
func validateUpstream(upstream string) error {
for _, proto := range protocols {
if strings.HasPrefix(upstream, proto) {
// validateUpstreams validates each upstream and returns an error if any upstream is invalid or if there are no default upstreams specified
func validateUpstreams(upstreams []string) error {
var defaultUpstreamFound bool
for _, u := range upstreams {
d, err := validateUpstream(u)
if err != nil {
return err
}
// Check this flag until default upstream will not be found
if !defaultUpstreamFound {
defaultUpstreamFound = d
}
}
// Return error if there are no default upstreams
if !defaultUpstreamFound {
return fmt.Errorf("no default upstreams specified")
}
return nil
}
func validateUpstream(u string) (defaultUpstream bool, err error) {
// Check if user tries to specify upstream for domain
defaultUpstream = true
u, defaultUpstream, err = separateUpstream(u)
if err != nil {
return
}
// The special server address '#' means "use the default servers"
if u == "#" && !defaultUpstream {
return
}
// Check if the upstream has a valid protocol prefix
for _, proto := range protocols {
if strings.HasPrefix(u, proto) {
return
}
}
if strings.Contains(upstream, "://") {
return fmt.Errorf("wrong protocol")
// Return error if the upstream contains '://' without any valid protocol
if strings.Contains(u, "://") {
return defaultUpstream, fmt.Errorf("wrong protocol")
}
return checkPlainDNS(upstream)
// Check if upstream is valid plain DNS
return defaultUpstream, checkPlainDNS(u)
}
// separateUpstream returns upstream without specified domains and a bool flag that indicates if no domains were specified
// error will be returned if upstream per domain specification is invalid
func separateUpstream(upstream string) (string, bool, error) {
defaultUpstream := true
if strings.HasPrefix(upstream, "[/") {
defaultUpstream = false
// split domains and upstream string
domainsAndUpstream := strings.Split(strings.TrimPrefix(upstream, "[/"), "/]")
if len(domainsAndUpstream) != 2 {
return "", defaultUpstream, fmt.Errorf("wrong DNS upstream per domain specification: %s", upstream)
}
// split domains list and validate each one
for _, host := range strings.Split(domainsAndUpstream[0], "/") {
if host != "" {
if err := utils.IsValidHostname(host); err != nil {
return "", defaultUpstream, err
}
}
}
upstream = domainsAndUpstream[1]
}
return upstream, defaultUpstream, nil
}
// checkPlainDNS checks if host is plain DNS
@ -425,7 +488,18 @@ func handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) {
}
func checkDNS(input string, bootstrap []string) error {
if err := validateUpstream(input); err != nil {
// separate upstream from domains list
input, defaultUpstream, err := separateUpstream(input)
if err != nil {
return fmt.Errorf("wrong upstream format: %s", err)
}
// No need to check this entrance
if input == "#" && !defaultUpstream {
return nil
}
if _, err := validateUpstream(input); err != nil {
return fmt.Errorf("wrong upstream format: %s", err)
}

76
control_test.go
View File

@ -75,3 +75,79 @@ kXS9jgARhhiWXJrk
t.Fatalf("valid cert & priv key: validateCertificates(): %v", data)
}
}
func TestValidateUpstream(t *testing.T) {
invalidUpstreams := []string{"1.2.3.4.5",
"123.3.7m",
"htttps://google.com/dns-query",
"[/host.com]tls://dns.adguard.com",
"[host.ru]#",
}
validDefaultUpstreams := []string{"1.1.1.1",
"tls://1.1.1.1",
"https://dns.adguard.com/dns-query",
"sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
}
validUpstreams := []string{"[/host.com/]1.1.1.1",
"[//]tls://1.1.1.1",
"[/www.host.com/]#",
"[/host.com/google.com/]8.8.8.8",
"[/host/]sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
}
for _, u := range invalidUpstreams {
_, err := validateUpstream(u)
if err == nil {
t.Fatalf("upstream %s is invalid but it pass through validation", u)
}
}
for _, u := range validDefaultUpstreams {
defaultUpstream, err := validateUpstream(u)
if err != nil {
t.Fatalf("upstream %s is valid but it doen't pass through validation cause: %s", u, err)
}
if !defaultUpstream {
t.Fatalf("upstream %s is default one!", u)
}
}
for _, u := range validUpstreams {
defaultUpstream, err := validateUpstream(u)
if err != nil {
t.Fatalf("upstream %s is valid but it doen't pass through validation cause: %s", u, err)
}
if defaultUpstream {
t.Fatalf("upstream %s is default one!", u)
}
}
}
func TestValidateUpstreamsSet(t *testing.T) {
// Set of valid upstreams. There is no default upstream specified
upstreamsSet := []string{"[/host.com/]1.1.1.1",
"[//]tls://1.1.1.1",
"[/www.host.com/]#",
"[/host.com/google.com/]8.8.8.8",
"[/host/]sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
}
err := validateUpstreams(upstreamsSet)
if err == nil {
t.Fatalf("there is no default upstream")
}
// Let's add default upstream
upstreamsSet = append(upstreamsSet, "8.8.8.8")
err = validateUpstreams(upstreamsSet)
if err != nil {
t.Fatalf("upstreams set is valid, but doesn't pass through validation cause: %s", err)
}
// Let's add invalid upstream
upstreamsSet = append(upstreamsSet, "dhcp://fake.dns")
err = validateUpstreams(upstreamsSet)
if err == nil {
t.Fatalf("there is an invalid upstream in set, but it pass through validation")
}
}

17
dns.go
View File

@ -7,7 +7,7 @@ import (
"github.com/AdguardTeam/AdGuardHome/dnsfilter"
"github.com/AdguardTeam/AdGuardHome/dnsforward"
"github.com/AdguardTeam/dnsproxy/upstream"
"github.com/AdguardTeam/dnsproxy/proxy"
"github.com/AdguardTeam/golibs/log"
"github.com/joomcode/errorx"
)
@ -58,19 +58,12 @@ func generateServerConfig() dnsforward.ServerConfig {
}
}
for _, u := range config.DNS.UpstreamDNS {
opts := upstream.Options{
Timeout: dnsforward.DefaultTimeout,
Bootstrap: config.DNS.BootstrapDNS,
}
dnsUpstream, err := upstream.AddressToUpstream(u, opts)
upstreamConfig, err := proxy.ParseUpstreamsConfig(config.DNS.UpstreamDNS, config.DNS.BootstrapDNS, dnsforward.DefaultTimeout)
if err != nil {
log.Printf("Couldn't get upstream: %s", err)
// continue, just ignore the upstream
continue
}
newconfig.Upstreams = append(newconfig.Upstreams, dnsUpstream)
log.Error("Couldn't get upstreams configuration cause: %s", err)
}
newconfig.Upstreams = upstreamConfig.Upstreams
newconfig.DomainsReservedUpstreams = upstreamConfig.DomainReservedUpstreams
newconfig.AllServers = config.DNS.AllServers
return newconfig
}

2
dnsforward/dnsforward.go
View File

@ -85,6 +85,7 @@ type ServerConfig struct {
UDPListenAddr *net.UDPAddr // UDP listen address
TCPListenAddr *net.TCPAddr // TCP listen address
Upstreams []upstream.Upstream // Configured upstreams
DomainsReservedUpstreams map[string][]upstream.Upstream // Map of domains and lists of configured upstreams
Filters []dnsfilter.Filter // A list of filters to use
FilteringConfig
@ -163,6 +164,7 @@ func (s *Server) startInternal(config *ServerConfig) error {
RefuseAny: s.RefuseAny,
CacheEnabled: true,
Upstreams: s.Upstreams,
DomainsReservedUpstreams: s.DomainsReservedUpstreams,
Handler: s.handleDNSRequest,
AllServers: s.AllServers,
}

4
go.mod
View File

@ -3,10 +3,10 @@ module github.com/AdguardTeam/AdGuardHome
go 1.12
require (
github.com/AdguardTeam/dnsproxy v0.11.2
github.com/AdguardTeam/dnsproxy v0.12.0
github.com/AdguardTeam/golibs v0.1.3
github.com/StackExchange/wmi v0.0.0-20180725035823-b12b22c5341f // indirect
github.com/bluele/gcache v0.0.0-20171010155617-472614239ac7
github.com/bluele/gcache v0.0.0-20190203144525-2016d595ccb0
github.com/go-ole/go-ole v1.2.1 // indirect
github.com/go-test/deep v1.0.1
github.com/gobuffalo/packr v1.19.0

10
go.sum
View File

@ -1,6 +1,6 @@
github.com/AdguardTeam/dnsproxy v0.11.2 h1:S/Ag2q9qoZsmW1fvMohPZP7/5amEtz8NmFCp8kxUalQ=
github.com/AdguardTeam/dnsproxy v0.11.2/go.mod h1:EPp92b5cYR7HZpO+OQu6xC7AyhUoBaXW3sfa3exq/0I=
github.com/AdguardTeam/golibs v0.1.0/go.mod h1:zhi6xGwK4cMpjDocybhhLgvcGkstiSIjlpKbvyxC5Yc=
github.com/AdguardTeam/dnsproxy v0.12.0 h1:BPgv2PlH2u4xakFcaW4EqU3Visk1BNidrqGSgxe5Qzg=
github.com/AdguardTeam/dnsproxy v0.12.0/go.mod h1:lcZM2QPwcWGEL3pz8RYy06nQdbjj4pr+94H45jnVSHg=
github.com/AdguardTeam/golibs v0.1.2/go.mod h1:b0XkhgIcn2TxwX6C5AQMtpIFAgjPehNgxJErWkwA3ko=
github.com/AdguardTeam/golibs v0.1.3 h1:hmapdTtMtIk3T8eQDwTOLdqZLGDKNKk9325uC8z12xg=
github.com/AdguardTeam/golibs v0.1.3/go.mod h1:b0XkhgIcn2TxwX6C5AQMtpIFAgjPehNgxJErWkwA3ko=
github.com/StackExchange/wmi v0.0.0-20180725035823-b12b22c5341f h1:5ZfJxyXo8KyX8DgGXC5B7ILL8y51fci/qYz2B4j8iLY=
@ -15,8 +15,8 @@ github.com/ameshkov/dnsstamps v1.0.1 h1:LhGvgWDzhNJh+kBQd/AfUlq1vfVe109huiXw4Jhn
github.com/ameshkov/dnsstamps v1.0.1/go.mod h1:Ii3eUu73dx4Vw5O4wjzmT5+lkCwovjzaEZZ4gKyIH5A=
github.com/beefsack/go-rate v0.0.0-20180408011153-efa7637bb9b6 h1:KXlsf+qt/X5ttPGEjR0tPH1xaWWoKBEg9Q1THAj2h3I=
github.com/beefsack/go-rate v0.0.0-20180408011153-efa7637bb9b6/go.mod h1:6YNgTHLutezwnBvyneBbwvB8C82y3dcoOj5EQJIdGXA=
github.com/bluele/gcache v0.0.0-20171010155617-472614239ac7 h1:NpQ+gkFOH27AyDypSCJ/LdsIi/b4rdnEb1N5+IpFfYs=
github.com/bluele/gcache v0.0.0-20171010155617-472614239ac7/go.mod h1:8c4/i2VlovMO2gBnHGQPN5EJw+H0lx1u/5p+cgsXtCk=
github.com/bluele/gcache v0.0.0-20190203144525-2016d595ccb0 h1:vUdUwmQLnT/yuk8PsDhhMVkrfr4aMdcv/0GWzIqOjEY=
github.com/bluele/gcache v0.0.0-20190203144525-2016d595ccb0/go.mod h1:8c4/i2VlovMO2gBnHGQPN5EJw+H0lx1u/5p+cgsXtCk=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-ole/go-ole v1.2.1 h1:2lOsA72HgjxAuMlKpFiCbHTvu44PIVkZ5hqm3RSdI/E=