badguardhome/internal/dnsfilter
Eugene Burkov c9d2436d77 Pull request: 2574 external tests vol.3
Merge in DNS/adguard-home from 2574-external-tests-3 to master

Updates #2574.

Squashed commit of the following:

commit 29d429c65dee2621ca503710a7ba9522f14f55f9
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Feb 4 20:06:57 2021 +0300

    all: finally fix spacing

commit 9e3a3be63b74852a7802e3f1832648444b58e4d0
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Feb 4 19:59:09 2021 +0300

    aghtest: polish spacing

commit 8a984159fe813b95b989803f5b8b78d01a41bd39
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Feb 4 18:44:47 2021 +0300

    all: fix linux tests, imp code quality

commit 0c1b42bacba1b23fa847e1fa032579c525b3eaa1
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Feb 4 17:33:12 2021 +0300

    all: mv testutil to aghtest package, imp tests
2021-02-04 20:35:13 +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 Added several blocked services 2021-02-04 18:16:01 +03:00
dnsfilter_test.go Pull request: 2574 external tests vol.3 2021-02-04 20:35:13 +03:00
dnsfilter.go Pull request: 2574 external tests vol.3 2021-02-04 20:35:13 +03:00
dnsrewrite_test.go Pull request: 2574 external tests vol.1 2021-01-29 16:09:31 +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: 2574 external tests vol.1 2021-01-29 16:09:31 +03:00
rewrites.go Pull request: all: use http method constants 2021-02-04 14:15:34 +03:00
safebrowsing_test.go Pull request: 2574 external tests vol.3 2021-02-04 20:35:13 +03:00
safebrowsing.go Pull request: 2574 external tests vol.3 2021-02-04 20:35:13 +03:00
safesearch.go Pull request: 2574 external tests vol.1 2021-01-29 16:09:31 +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)
    }
}