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Pull request: 2704 local addresses vol.3

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Merge in DNS/adguard-home from 2704-local-addresses-vol.3 to master

Updates .
Updates .
Updates .

Squashed commit of the following:

commit 8c42355c0093a3ac6951f79a5211e7891800f93a
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Apr 7 18:07:41 2021 +0300

    dnsforward: rm errors pkg

commit 7594a21a620239951039454dd5686a872e6f41a8
Merge: 830b0834 908452f8
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Apr 7 18:00:03 2021 +0300

    Merge branch 'master' into 2704-local-addresses-vol.3

commit 830b0834090510096061fed20b600195ab3773b8
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Apr 7 17:47:51 2021 +0300

    dnsforward: reduce local upstream timeout

commit 493e81d9e8bacdc690f88af29a38d211b9733c7e
Author: Ildar Kamalov <ik@adguard.com>
Date:   Tue Apr 6 19:11:00 2021 +0300

    client: private_upstream test

commit a0194ac28f15114578359b8c2460cd9af621e912
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Apr 6 18:36:23 2021 +0300

    all: expand api, fix conflicts

commit 0f4e06836fed958391aa597c8b02453564980ca3
Merge: 89cf93ad 8746005d
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Apr 6 18:35:04 2021 +0300

    Merge branch 'master' into 2704-local-addresses-vol.3

commit 89cf93ad4f26c2bf4f1b18ecaa4d3a1e169f9b06
Author: Ildar Kamalov <ik@adguard.com>
Date:   Tue Apr 6 18:02:40 2021 +0300

    client: add local ptr upstreams to upstream test

commit e6dd869dddd4888474d625cbb005bad6390e4760
Author: Ildar Kamalov <ik@adguard.com>
Date:   Tue Apr 6 15:24:22 2021 +0300

    client: add private DNS form

commit b858057b9a957a416117f22b8bd0025f90e8c758
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Apr 6 13:05:28 2021 +0300

    aghstrings: mk cloning correct

commit 8009ba60a6a7d6ceb7b6483a29f4e68d533af243
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Apr 6 12:37:46 2021 +0300

    aghstrings: fix lil bug

commit 0dd19f2e7cc7c0de21517c37abd8336a907e1c0d
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 5 20:45:01 2021 +0300

    all: log changes

commit eb5558d96fffa6e7bca7e14d3740d26e47382e23
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 5 20:18:53 2021 +0300

    dnsforward: keep the style

commit d6d5fcbde40a633129c0e04887b81cf0b1ce6875
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 5 20:02:52 2021 +0300

    dnsforward: disable redundant filtering for local ptr

commit 4f864c32027d10db9bcb4a264d2338df8c20afac
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 5 17:53:17 2021 +0300

    dnsforward: imp tests

commit 7848e6f2341868f8ba0bb839956a0b7444cf02ca
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 5 14:52:12 2021 +0300

    all: imp code

commit 19ac30653800eebf8aaee499f65560ae2d458a5a
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Sun Apr 4 16:28:05 2021 +0300

    all: mv more logic to aghstrings

commit fac892ec5f0d2e30d6d64def0609267bbae4a202
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Apr 2 20:23:23 2021 +0300

    dnsforward: use filepath

commit 05a3aeef1181b914788d14c7519287d467ab301f
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Apr 2 20:17:54 2021 +0300

    aghstrings: introduce the pkg

commit f24e1b63d6e1bf266a4ed063f46f86d7abf65663
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Apr 2 20:01:23 2021 +0300

    all: imp code

commit 0217a0ebb341f99a90c9b68013bebf6ff73d08ae
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Apr 2 18:04:13 2021 +0300

    openapi: log changes

... and 3 more commits
This commit is contained in:
Eugene Burkov 2021-04-07 20:16:06 +03:00
parent 908452f883
commit 80ed8be145
40 changed files with 1627 additions and 595 deletions
internal/home
home.go

110
internal/home/home.go
View file

@ -61,9 +61,7 @@ type homeContext struct {
autoHosts util.AutoHosts // IP-hostname pairs taken from system configuration (e.g. /etc/hosts) files
updater *updater.Updater
subnetDetector *aghnet.SubnetDetector
systemResolvers aghnet.SystemResolvers
localResolvers aghnet.Exchanger
subnetDetector *aghnet.SubnetDetector
// mux is our custom http.ServeMux.
mux *http.ServeMux
@ -222,110 +220,6 @@ func setupConfig(args options) {
}
}
const defaultLocalTimeout = 5 * time.Second
// stringsSetSubtract subtracts b from a interpreted as sets.
//
// TODO(e.burkov): Move into our internal package for working with strings.
func stringsSetSubtract(a, b []string) (c []string) {
// unit is an object to be used as value in set.
type unit = struct{}
cSet := make(map[string]unit)
for _, k := range a {
cSet[k] = unit{}
}
for _, k := range b {
delete(cSet, k)
}
c = make([]string, len(cSet))
i := 0
for k := range cSet {
c[i] = k
i++
}
return c
}
// collectAllIfacesAddrs returns the slice of all network interfaces IP
// addresses without port number.
func collectAllIfacesAddrs() (addrs []string, err error) {
var ifaces []net.Interface
ifaces, err = net.Interfaces()
if err != nil {
return nil, fmt.Errorf("getting network interfaces: %w", err)
}
for _, iface := range ifaces {
var ifaceAddrs []net.Addr
ifaceAddrs, err = iface.Addrs()
if err != nil {
return nil, fmt.Errorf("getting addresses for %q: %w", iface.Name, err)
}
for _, addr := range ifaceAddrs {
cidr := addr.String()
var ip net.IP
ip, _, err = net.ParseCIDR(cidr)
if err != nil {
return nil, fmt.Errorf("parsing %q as cidr: %w", cidr, err)
}
addrs = append(addrs, ip.String())
}
}
return addrs, nil
}
// collectDNSIPAddrs returns the slice of IP addresses without port number which
// we are listening on.
func collectDNSIPaddrs() (addrs []string, err error) {
addrs = make([]string, len(config.DNS.BindHosts))
for i, bh := range config.DNS.BindHosts {
if bh.IsUnspecified() {
return collectAllIfacesAddrs()
}
addrs[i] = bh.String()
}
return addrs, nil
}
func setupResolvers() {
// TODO(e.burkov): Enhance when the config will contain local resolvers
// addresses.
sysRes, err := aghnet.NewSystemResolvers(0, nil)
if err != nil {
log.Fatal(err)
}
Context.systemResolvers = sysRes
var ourAddrs []string
ourAddrs, err = collectDNSIPaddrs()
if err != nil {
log.Fatal(err)
}
// TODO(e.burkov): The approach of subtracting sets of strings is not
// really applicable here since in case of listening on all network
// interfaces we should check the whole interface's network to cut off
// all the loopback addresses as well.
addrs := stringsSetSubtract(sysRes.Get(), ourAddrs)
Context.localResolvers, err = aghnet.NewMultiAddrExchanger(addrs, defaultLocalTimeout)
if err != nil {
log.Fatal(err)
}
}
// run performs configurating and starts AdGuard Home.
func run(args options) {
// configure config filename
@ -416,8 +310,6 @@ func run(args options) {
log.Fatal(err)
}
setupResolvers()
if !Context.firstRun {
err = initDNSServer()
if err != nil {