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routerhosts.go
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| package main | |
| import ( | |
| "bufio" | |
| "bytes" | |
| "fmt" | |
| "io" | |
| "net/http" | |
| "os" | |
| "os/exec" | |
| ) | |
| const SOURCE = "https://raw.githubusercontent.com/StevenBlack/hosts/refs/heads/master/hosts" | |
| const DIR = "/tmp/hosts/" | |
| const ORIGINAL = DIR + "hosts.orig.txt" | |
| const MODIFIED = DIR + "hosts.txt" | |
| type on = bool | |
| type off = bool | |
| type rule = string | |
| var add = map[rule]on{ | |
| // inbox.lv ads | |
| "0.0.0.0 b.adbox.lv": true, | |
| // delfi.lv anti-adblock | |
| "0.0.0.0 experience-eu.piano.io": true, | |
| "0.0.0.0 vx.delfi.lv": true, | |
| } | |
| var remove = map[rule]off{ | |
| // breaks google search | |
| "0.0.0.0 www.googleadservices.com": true, | |
| // unsure | |
| "0.0.0.0 piano.io": false, | |
| "0.0.0.0 k.clarity.ms": false, | |
| "0.0.0.0 inmobi.com": false, | |
| } | |
| var scp = exec.Command("scp", MODIFIED, "router.lan:/usb1-part1/hosts/hosts.txt") | |
| var reload = exec.Command("ssh", "router.lan", "/ip/dns/adlist reload") | |
| var diff = exec.Command("colordiff", ORIGINAL, MODIFIED) | |
| func main() { | |
| os.Mkdir(DIR, 0755) | |
| response, err := http.Get(SOURCE) | |
| check(err) | |
| if response.StatusCode != http.StatusOK { | |
| check(fmt.Errorf("http status not OK: %d", response.StatusCode)) | |
| } | |
| body, err := io.ReadAll(response.Body) | |
| check(err) | |
| response.Body.Close() | |
| os.Remove(ORIGINAL) | |
| err = os.WriteFile(ORIGINAL, body, 0644) | |
| check(err) | |
| output := bytes.NewBuffer(nil) | |
| for rule, on := range add { | |
| if on { | |
| output.WriteString(rule + "\n") | |
| } | |
| } | |
| scanner := bufio.NewScanner(bytes.NewBuffer(body)) | |
| for scanner.Scan() { | |
| rule := scanner.Text() | |
| if off, present := remove[rule]; present && off { | |
| continue | |
| } | |
| output.WriteString(rule + "\n") | |
| } | |
| check(scanner.Err()) | |
| os.Remove(MODIFIED) | |
| err = os.WriteFile(MODIFIED, output.Bytes(), 0644) | |
| check(err) | |
| err = run(scp) | |
| check(err) | |
| err = run(reload) | |
| check(err) | |
| run(diff) | |
| } | |
| func run(cmd *exec.Cmd) error { | |
| cmd.Stderr = os.Stderr | |
| cmd.Stdout = os.Stdout | |
| return cmd.Run() | |
| } | |
| func check(err error) { | |
| if err != nil { | |
| fmt.Fprintln(os.Stderr, err) | |
| os.Exit(1) | |
| } | |
| } |
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