badguardhome/dnsfilter
Simon Zolin 1a88a63415 Merge: - filtering: fix host rules matching
Close #1365

Squashed commit of the following:

commit 9cbca2d330ae12b222633201f4864abb7f7cd7a3
Merge: 8ce6b015 be93dc34
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jan 30 19:03:21 2020 +0300

    Merge remote-tracking branch 'origin/master' into 1365-hostrules

commit 8ce6b0151a2b552c4ccb3ee1f7e36ce260ba96ea
Merge: c752ab33 5c814b29
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jan 30 18:57:20 2020 +0300

    Merge remote-tracking branch 'origin/master' into 1365-hostrules

commit c752ab33b074312f10772467436a27a90339a919
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jan 30 14:18:58 2020 +0300

    use new Match()

commit ce2f628aca9f934c776c8c690813efeed5d5427b
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jan 30 12:03:21 2020 +0300

    minor

commit ebebe02a63821fedd3904db384406c30de52d515
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jan 30 11:21:47 2020 +0300

    * dnsfilter: use new version of urlfilter's Match()

commit 84edc44f2ee5a67316114f048740825259cc87ff
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jan 24 14:10:41 2020 +0300

    - filtering: fix host rules matching

    Match by both IPv4 and IPv6 rules, not just the first one in list.
2020-01-30 19:06:09 +03:00
..
tests gometalinter 2019-01-25 20:13:57 +03:00
dnsfilter_test.go Merge: - filtering: fix host rules matching 2020-01-30 19:06:09 +03:00
dnsfilter.go Merge: - filtering: fix host rules matching 2020-01-30 19:06:09 +03:00
README.md Rename from 'Adguard DNS' to 'AdGuard Home'. 2018-10-15 16:02:19 +03:00
rewrites.go Merge: + dns rewrites: support wildcard override 2020-01-16 12:51:35 +03:00
safesearch.go + safesearch: add Pixabay 2019-11-08 13:07:25 +03:00
security.go Merge: + dns rewrites: support wildcard override 2020-01-16 12:51:35 +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 '%s': %s", host, err)
    }
    if res.IsFiltered {
        log.Printf("Host %s is filtered, reason - '%s', matched rule: '%s'", host, res.Reason, res.Rule)
    } else {
        log.Printf("Host %s is not filtered, reason - '%s'", 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 '%s': %s", host, err)
    }
    if res.IsFiltered {
        log.Printf("Host %s is filtered, reason - '%s', matched rule: '%s'", host, res.Reason, res.Rule)
    } else {
        log.Printf("Host %s is not filtered, reason - '%s'", host, res.Reason)
    }
}