mirror of
https://github.com/AdguardTeam/AdGuardHome.git
synced 2024-11-16 10:28:29 -07:00
710 lines
20 KiB
Go
710 lines
20 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"strconv"
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"strings"
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"time"
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"github.com/AdguardTeam/AdGuardHome/dnsforward"
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"github.com/AdguardTeam/AdGuardHome/upstream"
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"gopkg.in/asaskevich/govalidator.v4"
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)
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const updatePeriod = time.Minute * 30
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// cached version.json to avoid hammering github.io for each page reload
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var versionCheckJSON []byte
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var versionCheckLastTime time.Time
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const versionCheckURL = "https://adguardteam.github.io/AdGuardHome/version.json"
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const versionCheckPeriod = time.Hour * 8
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var client = &http.Client{
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Timeout: time.Second * 30,
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}
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// -------------------
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// coredns run control
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// -------------------
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func writeAllConfigsAndReloadCoreDNS() error {
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err := writeAllConfigs()
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if err != nil {
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log.Printf("Couldn't write all configs: %s", err)
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return err
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}
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reconfigureDNSServer()
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return nil
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}
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func httpUpdateConfigReloadDNSReturnOK(w http.ResponseWriter, r *http.Request) {
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err := writeAllConfigsAndReloadCoreDNS()
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if err != nil {
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errortext := fmt.Sprintf("Couldn't write config file: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, http.StatusInternalServerError)
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return
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}
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returnOK(w, r)
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}
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func returnOK(w http.ResponseWriter, r *http.Request) {
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_, err := fmt.Fprintf(w, "OK\n")
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if err != nil {
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errortext := fmt.Sprintf("Couldn't write body: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, http.StatusInternalServerError)
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}
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}
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func handleStatus(w http.ResponseWriter, r *http.Request) {
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data := map[string]interface{}{
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"dns_address": config.BindHost,
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"dns_port": config.CoreDNS.Port,
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"protection_enabled": config.CoreDNS.ProtectionEnabled,
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"querylog_enabled": config.CoreDNS.QueryLogEnabled,
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"running": isRunning(),
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"bootstrap_dns": config.CoreDNS.BootstrapDNS,
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"upstream_dns": config.CoreDNS.UpstreamDNS,
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"version": VersionString,
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"language": config.Language,
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}
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jsonVal, err := json.Marshal(data)
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if err != nil {
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errortext := fmt.Sprintf("Unable to marshal status json: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, 500)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_, err = w.Write(jsonVal)
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if err != nil {
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errortext := fmt.Sprintf("Unable to write response json: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, 500)
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return
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}
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}
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func handleProtectionEnable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.ProtectionEnabled = true
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleProtectionDisable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.ProtectionEnabled = false
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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// -----
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// stats
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// -----
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func handleQueryLogEnable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.QueryLogEnabled = true
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleQueryLogDisable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.QueryLogEnabled = false
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func httpError(w http.ResponseWriter, code int, format string, args ...interface{}) {
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text := fmt.Sprintf(format, args...)
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log.Println(text)
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http.Error(w, text, code)
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}
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func handleSetUpstreamDNS(w http.ResponseWriter, r *http.Request) {
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body, err := ioutil.ReadAll(r.Body)
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if err != nil {
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errorText := fmt.Sprintf("Failed to read request body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusBadRequest)
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return
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}
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// if empty body -- user is asking for default servers
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hosts := strings.Fields(string(body))
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if len(hosts) == 0 {
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config.CoreDNS.UpstreamDNS = defaultDNS
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} else {
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config.CoreDNS.UpstreamDNS = hosts
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}
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err = writeAllConfigs()
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if err != nil {
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errorText := fmt.Sprintf("Couldn't write config file: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusInternalServerError)
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return
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}
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reconfigureDNSServer()
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_, err = fmt.Fprintf(w, "OK %d servers\n", len(hosts))
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if err != nil {
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errorText := fmt.Sprintf("Couldn't write body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusInternalServerError)
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}
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}
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func handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) {
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body, err := ioutil.ReadAll(r.Body)
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if err != nil {
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errorText := fmt.Sprintf("Failed to read request body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, 400)
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return
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}
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hosts := strings.Fields(string(body))
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if len(hosts) == 0 {
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errorText := fmt.Sprintf("No servers specified")
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log.Println(errorText)
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http.Error(w, errorText, http.StatusBadRequest)
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return
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}
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result := map[string]string{}
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for _, host := range hosts {
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err = checkDNS(host)
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if err != nil {
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log.Println(err)
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result[host] = err.Error()
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} else {
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result[host] = "OK"
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}
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}
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jsonVal, err := json.Marshal(result)
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if err != nil {
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errorText := fmt.Sprintf("Unable to marshal status json: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_, err = w.Write(jsonVal)
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if err != nil {
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errorText := fmt.Sprintf("Couldn't write body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusInternalServerError)
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}
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}
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func checkDNS(input string) error {
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u, err := upstream.NewUpstream(input, config.CoreDNS.BootstrapDNS)
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if err != nil {
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return err
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}
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defer u.Close()
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alive, err := upstream.IsAlive(u)
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if err != nil {
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return fmt.Errorf("couldn't communicate with DNS server %s: %s", input, err)
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}
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if !alive {
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return fmt.Errorf("DNS server has not passed the healthcheck: %s", input)
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}
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return nil
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}
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func handleGetVersionJSON(w http.ResponseWriter, r *http.Request) {
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now := time.Now()
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if now.Sub(versionCheckLastTime) <= versionCheckPeriod && len(versionCheckJSON) != 0 {
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// return cached copy
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w.Header().Set("Content-Type", "application/json")
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w.Write(versionCheckJSON)
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return
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}
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resp, err := client.Get(versionCheckURL)
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if err != nil {
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errortext := fmt.Sprintf("Couldn't get querylog from coredns: %T %s\n", err, err)
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log.Println(errortext)
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http.Error(w, errortext, http.StatusBadGateway)
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return
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}
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if resp != nil && resp.Body != nil {
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defer resp.Body.Close()
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}
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// read the body entirely
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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errortext := fmt.Sprintf("Couldn't read response body: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, http.StatusBadGateway)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_, err = w.Write(body)
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if err != nil {
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errortext := fmt.Sprintf("Couldn't write body: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, http.StatusInternalServerError)
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}
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versionCheckLastTime = now
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versionCheckJSON = body
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}
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// ---------
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// filtering
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// ---------
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func handleFilteringEnable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.FilteringEnabled = true
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleFilteringDisable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.FilteringEnabled = false
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleFilteringStatus(w http.ResponseWriter, r *http.Request) {
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data := map[string]interface{}{
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"enabled": config.CoreDNS.FilteringEnabled,
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}
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config.RLock()
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data["filters"] = config.Filters
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data["user_rules"] = config.UserRules
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jsonVal, err := json.Marshal(data)
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config.RUnlock()
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if err != nil {
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errortext := fmt.Sprintf("Unable to marshal status json: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, 500)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_, err = w.Write(jsonVal)
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if err != nil {
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errortext := fmt.Sprintf("Unable to write response json: %s", err)
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log.Println(errortext)
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http.Error(w, errortext, 500)
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return
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}
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}
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func handleFilteringAddURL(w http.ResponseWriter, r *http.Request) {
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filter := filter{}
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err := json.NewDecoder(r.Body).Decode(&filter)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Failed to parse request body json: %s", err)
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return
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}
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if len(filter.URL) == 0 {
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http.Error(w, "URL parameter was not specified", 400)
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return
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}
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if valid := govalidator.IsRequestURL(filter.URL); !valid {
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http.Error(w, "URL parameter is not valid request URL", 400)
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return
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}
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// Check for duplicates
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for i := range config.Filters {
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if config.Filters[i].URL == filter.URL {
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errorText := fmt.Sprintf("Filter URL already added -- %s", filter.URL)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusBadRequest)
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return
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}
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}
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// Set necessary properties
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filter.ID = assignUniqueFilterID()
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filter.Enabled = true
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// Download the filter contents
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ok, err := filter.update(true)
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if err != nil {
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errorText := fmt.Sprintf("Couldn't fetch filter from url %s: %s", filter.URL, err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusBadRequest)
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return
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}
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if filter.RulesCount == 0 {
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errorText := fmt.Sprintf("Filter at the url %s has no rules (maybe it points to blank page?)", filter.URL)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusBadRequest)
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return
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}
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if !ok {
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errorText := fmt.Sprintf("Filter at the url %s is invalid (maybe it points to blank page?)", filter.URL)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusBadRequest)
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return
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}
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// Save the filter contents
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err = filter.save()
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if err != nil {
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errorText := fmt.Sprintf("Failed to save filter %d due to %s", filter.ID, err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusBadRequest)
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return
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}
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// URL is deemed valid, append it to filters, update config, write new filter file and tell coredns to reload it
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config.Filters = append(config.Filters, filter)
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err = writeAllConfigs()
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if err != nil {
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errorText := fmt.Sprintf("Couldn't write config file: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusInternalServerError)
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return
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}
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reconfigureDNSServer()
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_, err = fmt.Fprintf(w, "OK %d rules\n", filter.RulesCount)
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if err != nil {
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errorText := fmt.Sprintf("Couldn't write body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, http.StatusInternalServerError)
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}
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}
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func handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) {
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parameters, err := parseParametersFromBody(r.Body)
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if err != nil {
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errorText := fmt.Sprintf("failed to parse parameters from body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, 400)
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return
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}
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url, ok := parameters["url"]
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if !ok {
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http.Error(w, "URL parameter was not specified", 400)
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return
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}
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if valid := govalidator.IsRequestURL(url); !valid {
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http.Error(w, "URL parameter is not valid request URL", 400)
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return
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}
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// go through each element and delete if url matches
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newFilters := config.Filters[:0]
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for _, filter := range config.Filters {
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if filter.URL != url {
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newFilters = append(newFilters, filter)
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} else {
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// Remove the filter file
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err := os.Remove(filter.Path())
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if err != nil {
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errorText := fmt.Sprintf("Couldn't remove the filter file: %s", err)
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http.Error(w, errorText, http.StatusInternalServerError)
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return
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}
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}
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}
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// Update the configuration after removing filter files
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config.Filters = newFilters
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleFilteringEnableURL(w http.ResponseWriter, r *http.Request) {
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parameters, err := parseParametersFromBody(r.Body)
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if err != nil {
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errorText := fmt.Sprintf("failed to parse parameters from body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, 400)
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return
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}
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url, ok := parameters["url"]
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if !ok {
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http.Error(w, "URL parameter was not specified", 400)
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return
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}
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if valid := govalidator.IsRequestURL(url); !valid {
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http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
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return
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}
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found := false
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for i := range config.Filters {
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filter := &config.Filters[i] // otherwise we will be operating on a copy
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if filter.URL == url {
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filter.Enabled = true
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found = true
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}
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}
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if !found {
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http.Error(w, "URL parameter was not previously added", http.StatusBadRequest)
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return
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}
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// kick off refresh of rules from new URLs
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refreshFiltersIfNeccessary(false)
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleFilteringDisableURL(w http.ResponseWriter, r *http.Request) {
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parameters, err := parseParametersFromBody(r.Body)
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if err != nil {
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errorText := fmt.Sprintf("failed to parse parameters from body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, 400)
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return
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}
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url, ok := parameters["url"]
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if !ok {
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http.Error(w, "URL parameter was not specified", 400)
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return
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}
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if valid := govalidator.IsRequestURL(url); !valid {
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http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
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return
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}
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found := false
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for i := range config.Filters {
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filter := &config.Filters[i] // otherwise we will be operating on a copy
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if filter.URL == url {
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filter.Enabled = false
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found = true
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}
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}
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if !found {
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http.Error(w, "URL parameter was not previously added", http.StatusBadRequest)
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return
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}
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleFilteringSetRules(w http.ResponseWriter, r *http.Request) {
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body, err := ioutil.ReadAll(r.Body)
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if err != nil {
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errorText := fmt.Sprintf("Failed to read request body: %s", err)
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log.Println(errorText)
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http.Error(w, errorText, 400)
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return
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}
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config.UserRules = strings.Split(string(body), "\n")
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleFilteringRefresh(w http.ResponseWriter, r *http.Request) {
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force := r.URL.Query().Get("force")
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updated := refreshFiltersIfNeccessary(force != "")
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fmt.Fprintf(w, "OK %d filters updated\n", updated)
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}
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// ------------
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// safebrowsing
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// ------------
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func handleSafeBrowsingEnable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.SafeBrowsingEnabled = true
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleSafeBrowsingDisable(w http.ResponseWriter, r *http.Request) {
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config.CoreDNS.SafeBrowsingEnabled = false
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleSafeBrowsingStatus(w http.ResponseWriter, r *http.Request) {
|
|
data := map[string]interface{}{
|
|
"enabled": config.CoreDNS.SafeBrowsingEnabled,
|
|
}
|
|
jsonVal, err := json.Marshal(data)
|
|
if err != nil {
|
|
errortext := fmt.Sprintf("Unable to marshal status json: %s", err)
|
|
log.Println(errortext)
|
|
http.Error(w, errortext, 500)
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(jsonVal)
|
|
if err != nil {
|
|
errortext := fmt.Sprintf("Unable to write response json: %s", err)
|
|
log.Println(errortext)
|
|
http.Error(w, errortext, 500)
|
|
return
|
|
}
|
|
}
|
|
|
|
// --------
|
|
// parental
|
|
// --------
|
|
func handleParentalEnable(w http.ResponseWriter, r *http.Request) {
|
|
parameters, err := parseParametersFromBody(r.Body)
|
|
if err != nil {
|
|
errortext := fmt.Sprintf("failed to parse parameters from body: %s", err)
|
|
log.Println(errortext)
|
|
http.Error(w, errortext, 400)
|
|
return
|
|
}
|
|
|
|
sensitivity, ok := parameters["sensitivity"]
|
|
if !ok {
|
|
http.Error(w, "URL parameter was not specified", 400)
|
|
return
|
|
}
|
|
|
|
switch sensitivity {
|
|
case "3":
|
|
break
|
|
case "EARLY_CHILDHOOD":
|
|
sensitivity = "3"
|
|
case "10":
|
|
break
|
|
case "YOUNG":
|
|
sensitivity = "10"
|
|
case "13":
|
|
break
|
|
case "TEEN":
|
|
sensitivity = "13"
|
|
case "17":
|
|
break
|
|
case "MATURE":
|
|
sensitivity = "17"
|
|
default:
|
|
http.Error(w, "Sensitivity must be set to valid value", 400)
|
|
return
|
|
}
|
|
i, err := strconv.Atoi(sensitivity)
|
|
if err != nil {
|
|
http.Error(w, "Sensitivity must be set to valid value", 400)
|
|
return
|
|
}
|
|
config.CoreDNS.ParentalSensitivity = i
|
|
config.CoreDNS.ParentalEnabled = true
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleParentalDisable(w http.ResponseWriter, r *http.Request) {
|
|
config.CoreDNS.ParentalEnabled = false
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleParentalStatus(w http.ResponseWriter, r *http.Request) {
|
|
data := map[string]interface{}{
|
|
"enabled": config.CoreDNS.ParentalEnabled,
|
|
}
|
|
if config.CoreDNS.ParentalEnabled {
|
|
data["sensitivity"] = config.CoreDNS.ParentalSensitivity
|
|
}
|
|
jsonVal, err := json.Marshal(data)
|
|
if err != nil {
|
|
errortext := fmt.Sprintf("Unable to marshal status json: %s", err)
|
|
log.Println(errortext)
|
|
http.Error(w, errortext, 500)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(jsonVal)
|
|
if err != nil {
|
|
errortext := fmt.Sprintf("Unable to write response json: %s", err)
|
|
log.Println(errortext)
|
|
http.Error(w, errortext, 500)
|
|
return
|
|
}
|
|
}
|
|
|
|
// ------------
|
|
// safebrowsing
|
|
// ------------
|
|
|
|
func handleSafeSearchEnable(w http.ResponseWriter, r *http.Request) {
|
|
config.CoreDNS.SafeSearchEnabled = true
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleSafeSearchDisable(w http.ResponseWriter, r *http.Request) {
|
|
config.CoreDNS.SafeSearchEnabled = false
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleSafeSearchStatus(w http.ResponseWriter, r *http.Request) {
|
|
data := map[string]interface{}{
|
|
"enabled": config.CoreDNS.SafeSearchEnabled,
|
|
}
|
|
jsonVal, err := json.Marshal(data)
|
|
if err != nil {
|
|
errortext := fmt.Sprintf("Unable to marshal status json: %s", err)
|
|
log.Println(errortext)
|
|
http.Error(w, errortext, 500)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(jsonVal)
|
|
if err != nil {
|
|
errortext := fmt.Sprintf("Unable to write response json: %s", err)
|
|
log.Println(errortext)
|
|
http.Error(w, errortext, 500)
|
|
return
|
|
}
|
|
}
|
|
|
|
func registerControlHandlers() {
|
|
http.HandleFunc("/control/status", optionalAuth(ensureGET(handleStatus)))
|
|
http.HandleFunc("/control/enable_protection", optionalAuth(ensurePOST(handleProtectionEnable)))
|
|
http.HandleFunc("/control/disable_protection", optionalAuth(ensurePOST(handleProtectionDisable)))
|
|
http.HandleFunc("/control/querylog", optionalAuth(ensureGET(dnsforward.HandleQueryLog)))
|
|
http.HandleFunc("/control/querylog_enable", optionalAuth(ensurePOST(handleQueryLogEnable)))
|
|
http.HandleFunc("/control/querylog_disable", optionalAuth(ensurePOST(handleQueryLogDisable)))
|
|
http.HandleFunc("/control/set_upstream_dns", optionalAuth(ensurePOST(handleSetUpstreamDNS)))
|
|
http.HandleFunc("/control/test_upstream_dns", optionalAuth(ensurePOST(handleTestUpstreamDNS)))
|
|
http.HandleFunc("/control/i18n/change_language", optionalAuth(ensurePOST(handleI18nChangeLanguage)))
|
|
http.HandleFunc("/control/i18n/current_language", optionalAuth(ensureGET(handleI18nCurrentLanguage)))
|
|
http.HandleFunc("/control/stats_top", optionalAuth(ensureGET(dnsforward.HandleStatsTop)))
|
|
http.HandleFunc("/control/stats", optionalAuth(ensureGET(dnsforward.HandleStats)))
|
|
http.HandleFunc("/control/stats_history", optionalAuth(ensureGET(dnsforward.HandleStatsHistory)))
|
|
http.HandleFunc("/control/stats_reset", optionalAuth(ensurePOST(dnsforward.HandleStatsReset)))
|
|
http.HandleFunc("/control/version.json", optionalAuth(handleGetVersionJSON))
|
|
http.HandleFunc("/control/filtering/enable", optionalAuth(ensurePOST(handleFilteringEnable)))
|
|
http.HandleFunc("/control/filtering/disable", optionalAuth(ensurePOST(handleFilteringDisable)))
|
|
http.HandleFunc("/control/filtering/add_url", optionalAuth(ensurePUT(handleFilteringAddURL)))
|
|
http.HandleFunc("/control/filtering/remove_url", optionalAuth(ensureDELETE(handleFilteringRemoveURL)))
|
|
http.HandleFunc("/control/filtering/enable_url", optionalAuth(ensurePOST(handleFilteringEnableURL)))
|
|
http.HandleFunc("/control/filtering/disable_url", optionalAuth(ensurePOST(handleFilteringDisableURL)))
|
|
http.HandleFunc("/control/filtering/refresh", optionalAuth(ensurePOST(handleFilteringRefresh)))
|
|
http.HandleFunc("/control/filtering/status", optionalAuth(ensureGET(handleFilteringStatus)))
|
|
http.HandleFunc("/control/filtering/set_rules", optionalAuth(ensurePUT(handleFilteringSetRules)))
|
|
http.HandleFunc("/control/safebrowsing/enable", optionalAuth(ensurePOST(handleSafeBrowsingEnable)))
|
|
http.HandleFunc("/control/safebrowsing/disable", optionalAuth(ensurePOST(handleSafeBrowsingDisable)))
|
|
http.HandleFunc("/control/safebrowsing/status", optionalAuth(ensureGET(handleSafeBrowsingStatus)))
|
|
http.HandleFunc("/control/parental/enable", optionalAuth(ensurePOST(handleParentalEnable)))
|
|
http.HandleFunc("/control/parental/disable", optionalAuth(ensurePOST(handleParentalDisable)))
|
|
http.HandleFunc("/control/parental/status", optionalAuth(ensureGET(handleParentalStatus)))
|
|
http.HandleFunc("/control/safesearch/enable", optionalAuth(ensurePOST(handleSafeSearchEnable)))
|
|
http.HandleFunc("/control/safesearch/disable", optionalAuth(ensurePOST(handleSafeSearchDisable)))
|
|
http.HandleFunc("/control/safesearch/status", optionalAuth(ensureGET(handleSafeSearchStatus)))
|
|
}
|