badguardhome/internal/dnsfilter
Eugene Burkov e671f43a2f Pull request: 1947 disable autohosts option
Merge in DNS/adguard-home from 1947-hosts-opt to master

Updates #1947.
Updates #2829.

Squashed commit of the following:

commit d09285c3dbfa7816469eec223b88c320c255c8fe
Merge: cff8c4cd 7c6557b0
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 18:23:20 2021 +0300

    Merge branch 'master' into 1947-hosts-opt

commit cff8c4cdbf4bcd1f5f413c541d7f4a9e42b8b05b
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 17:46:19 2021 +0300

    home: fix help

commit 1fa01d5b30f5adeda564dcc85a7064e2921d5981
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 17:40:48 2021 +0300

    home: fix option order

commit 9d83cb604aaddcc8cbe99bafa544636f8f0b7e54
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 17:28:30 2021 +0300

    aghnet: add important todo

commit 7f1386ff5c3081e07e975b640164a7a05e1319c9
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 17:17:17 2021 +0300

    all: correct naming

commit cbe2b2e4b21d5bceb3ee88e09cad154ba62b5cef
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 15:55:46 2021 +0300

    all: mv functionality from util

commit e82ad53862682d903dd0dd10844db65997a758bc
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 15:41:35 2021 +0300

    home: imp code, docs

commit 9058977f3ff99648fabaebbd7c1c354c71671327
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Apr 12 15:02:34 2021 +0300

    home: add an option to disable autohosts
2021-04-12 18:31:45 +03:00
..
tests Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
blocked_test.go Added several blocked services 2021-02-04 18:16:01 +03:00
blocked.go Pull request: all: imp code, decr cyclo 2021-03-25 20:30:30 +03:00
dnsfilter_test.go Pull request: all: imp code, decr cyclo 2021-03-25 20:30:30 +03:00
dnsfilter.go Pull request: 1947 disable autohosts option 2021-04-12 18:31:45 +03:00
dnsrewrite_test.go Pull request: all: imp code, decr cyclo 2021-03-25 20:30:30 +03:00
dnsrewrite.go Pull request: dnsforward: add dnsrewrite tests 2021-01-14 15:30:39 +03:00
README.md Pull request:* all: remove github.com/joomcode/errorx dependency 2020-11-05 15:20:57 +03:00
rewrites_test.go Pull request: 2639 use testify require vol.4 2021-03-11 17:32:58 +03:00
rewrites.go Pull request: 2479 simpl 2021-03-29 19:35:35 +03:00
safebrowsing_test.go Pull request: all: imp code, decr cyclo 2021-03-25 20:30:30 +03:00
safebrowsing.go Pull request: 2704 local addresses vol.3 2021-04-07 20:16:06 +03:00
safesearch.go Pull request: all: imp code, decr cyclo 2021-03-25 20:30:30 +03:00

AdGuard Home's DNS filtering go library

Example use:

[ -z "$GOPATH" ] && export GOPATH=$HOME/go
go get -d github.com/AdguardTeam/AdGuardHome/dnsfilter

Create file filter.go

package main

import (
    "github.com/AdguardTeam/AdGuardHome/dnsfilter"
    "log"
)

func main() {
    filter := dnsfilter.New()
    filter.AddRule("||dou*ck.net^")
    host := "www.doubleclick.net"
    res, err := filter.CheckHost(host)
    if err != nil {
        // temporary failure
        log.Fatalf("Failed to check host %q: %s", host, err)
    }
    if res.IsFiltered {
        log.Printf("Host %s is filtered, reason - %q, matched rule: %q", host, res.Reason, res.Rule)
    } else {
        log.Printf("Host %s is not filtered, reason - %q", host, res.Reason)
    }
}

And then run it:

go run filter.go

You will get:

2000/01/01 00:00:00 Host www.doubleclick.net is filtered, reason - 'FilteredBlackList', matched rule: '||dou*ck.net^'

You can also enable checking against AdGuard's SafeBrowsing:

package main

import (
    "github.com/AdguardTeam/AdGuardHome/dnsfilter"
    "log"
)

func main() {
    filter := dnsfilter.New()
    filter.EnableSafeBrowsing()
    host := "wmconvirus.narod.ru" // hostname for testing safebrowsing
    res, err := filter.CheckHost(host)
    if err != nil {
        // temporary failure
        log.Fatalf("Failed to check host %q: %s", host, err)
    }
    if res.IsFiltered {
        log.Printf("Host %s is filtered, reason - %q, matched rule: %q", host, res.Reason, res.Rule)
    } else {
        log.Printf("Host %s is not filtered, reason - %q", host, res.Reason)
    }
}