mirror of
https://github.com/AdguardTeam/AdGuardHome.git
synced 2024-11-27 09:18:58 +03:00
1082 lines
32 KiB
Go
1082 lines
32 KiB
Go
package main
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"os"
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"sort"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/AdguardTeam/AdGuardHome/dnsforward"
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"github.com/AdguardTeam/dnsproxy/upstream"
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"github.com/AdguardTeam/golibs/log"
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"github.com/miekg/dns"
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govalidator "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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var protocols = []string{"tls://", "https://", "tcp://", "sdns://"}
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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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var controlLock sync.Mutex
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// ----------------
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// helper functions
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// ----------------
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func returnOK(w http.ResponseWriter) {
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_, err := fmt.Fprintf(w, "OK\n")
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
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}
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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.Info(text)
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http.Error(w, text, code)
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}
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// ---------------
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// dns run control
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// ---------------
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func writeAllConfigsAndReloadDNS() error {
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err := writeAllConfigs()
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if err != nil {
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log.Error("Couldn't write all configs: %s", err)
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return err
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}
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return reconfigureDNSServer()
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}
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func httpUpdateConfigReloadDNSReturnOK(w http.ResponseWriter, r *http.Request) {
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err := writeAllConfigsAndReloadDNS()
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Couldn't write config file: %s", err)
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return
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}
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returnOK(w)
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}
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func handleStatus(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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dnsAddresses := []string{}
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if config.DNS.BindHost == "0.0.0.0" {
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ifaces, e := getValidNetInterfacesForWeb()
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if e != nil {
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log.Error("Couldn't get network interfaces: %v", e)
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}
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for _, iface := range ifaces {
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for _, addr := range iface.Addresses {
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dnsAddresses = append(dnsAddresses, addr)
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}
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}
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}
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if len(dnsAddresses) == 0 {
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dnsAddresses = append(dnsAddresses, config.DNS.BindHost)
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}
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data := map[string]interface{}{
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"dns_addresses": dnsAddresses,
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"http_port": config.BindPort,
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"dns_port": config.DNS.Port,
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"protection_enabled": config.DNS.ProtectionEnabled,
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"querylog_enabled": config.DNS.QueryLogEnabled,
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"running": isRunning(),
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"bootstrap_dns": config.DNS.BootstrapDNS,
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"upstream_dns": config.DNS.UpstreamDNS,
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"all_servers": config.DNS.AllServers,
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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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httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
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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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httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
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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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log.Tracef("%s %v", r.Method, r.URL)
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config.DNS.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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log.Tracef("%s %v", r.Method, r.URL)
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config.DNS.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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log.Tracef("%s %v", r.Method, r.URL)
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config.DNS.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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log.Tracef("%s %v", r.Method, r.URL)
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config.DNS.QueryLogEnabled = false
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func handleQueryLog(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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data := dnsServer.GetQueryLog()
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jsonVal, err := json.Marshal(data)
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Couldn't marshal data into json: %s", err)
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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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httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
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}
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}
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func handleStatsTop(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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s := dnsServer.GetStatsTop()
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// use manual json marshalling because we want maps to be sorted by value
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statsJSON := bytes.Buffer{}
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statsJSON.WriteString("{\n")
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gen := func(json *bytes.Buffer, name string, top map[string]int, addComma bool) {
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json.WriteString(" ")
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json.WriteString(fmt.Sprintf("%q", name))
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json.WriteString(": {\n")
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sorted := sortByValue(top)
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// no more than 50 entries
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if len(sorted) > 50 {
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sorted = sorted[:50]
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}
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for i, key := range sorted {
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json.WriteString(" ")
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json.WriteString(fmt.Sprintf("%q", key))
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json.WriteString(": ")
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json.WriteString(strconv.Itoa(top[key]))
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if i+1 != len(sorted) {
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json.WriteByte(',')
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}
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json.WriteByte('\n')
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}
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json.WriteString(" }")
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if addComma {
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json.WriteByte(',')
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}
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json.WriteByte('\n')
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}
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gen(&statsJSON, "top_queried_domains", s.Domains, true)
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gen(&statsJSON, "top_blocked_domains", s.Blocked, true)
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gen(&statsJSON, "top_clients", s.Clients, true)
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statsJSON.WriteString(" \"stats_period\": \"24 hours\"\n")
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statsJSON.WriteString("}\n")
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w.Header().Set("Content-Type", "application/json")
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_, err := w.Write(statsJSON.Bytes())
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
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}
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}
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// handleStatsReset resets the stats caches
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func handleStatsReset(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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dnsServer.PurgeStats()
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_, err := fmt.Fprintf(w, "OK\n")
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
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}
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}
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// handleStats returns aggregated stats data for the 24 hours
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func handleStats(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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summed := dnsServer.GetAggregatedStats()
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statsJSON, err := json.Marshal(summed)
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
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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(statsJSON)
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
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return
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}
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}
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// HandleStatsHistory returns historical stats data for the 24 hours
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func handleStatsHistory(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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// handle time unit and prepare our time window size
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timeUnitString := r.URL.Query().Get("time_unit")
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var timeUnit time.Duration
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switch timeUnitString {
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case "seconds":
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timeUnit = time.Second
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case "minutes":
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timeUnit = time.Minute
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case "hours":
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timeUnit = time.Hour
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case "days":
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timeUnit = time.Hour * 24
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default:
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http.Error(w, "Must specify valid time_unit parameter", http.StatusBadRequest)
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return
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}
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// parse start and end time
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startTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("start_time"))
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if err != nil {
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httpError(w, http.StatusBadRequest, "Must specify valid start_time parameter: %s", err)
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return
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}
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endTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("end_time"))
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if err != nil {
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httpError(w, http.StatusBadRequest, "Must specify valid end_time parameter: %s", err)
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return
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}
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data, err := dnsServer.GetStatsHistory(timeUnit, startTime, endTime)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Cannot get stats history: %s", err)
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return
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}
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statsJSON, err := json.Marshal(data)
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
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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(statsJSON)
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if err != nil {
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httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
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return
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}
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}
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// sortByValue is a helper function for querylog API
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func sortByValue(m map[string]int) []string {
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type kv struct {
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k string
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v int
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}
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var ss []kv
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for k, v := range m {
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ss = append(ss, kv{k, v})
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}
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sort.Slice(ss, func(l, r int) bool {
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return ss[l].v > ss[r].v
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})
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sorted := []string{}
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for _, v := range ss {
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sorted = append(sorted, v.k)
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}
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return sorted
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}
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// -----------------------
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// upstreams configuration
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// -----------------------
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// TODO this struct will become unnecessary after config file rework
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type upstreamConfig struct {
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Upstreams []string `json:"upstream_dns"` // Upstreams
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BootstrapDNS []string `json:"bootstrap_dns"` // Bootstrap DNS
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AllServers bool `json:"all_servers"` // --all-servers param for dnsproxy
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}
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func handleSetUpstreamConfig(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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newconfig := upstreamConfig{}
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err := json.NewDecoder(r.Body).Decode(&newconfig)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Failed to parse new upstreams config json: %s", err)
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return
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}
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for _, u := range newconfig.Upstreams {
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if err = validateUpstream(u); err != nil {
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httpError(w, http.StatusBadRequest, "%s can not be used as upstream cause: %s", u, err)
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return
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}
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}
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config.DNS.UpstreamDNS = defaultDNS
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if len(newconfig.Upstreams) > 0 {
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config.DNS.UpstreamDNS = newconfig.Upstreams
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}
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// bootstrap servers are plain DNS only.
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for _, host := range newconfig.BootstrapDNS {
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if err := checkPlainDNS(host); err != nil {
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httpError(w, http.StatusBadRequest, "%s can not be used as bootstrap dns cause: %s", host, err)
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return
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}
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}
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config.DNS.BootstrapDNS = defaultBootstrap
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if len(newconfig.BootstrapDNS) > 0 {
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config.DNS.BootstrapDNS = newconfig.BootstrapDNS
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}
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config.DNS.AllServers = newconfig.AllServers
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httpUpdateConfigReloadDNSReturnOK(w, r)
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}
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func validateUpstream(upstream string) error {
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for _, proto := range protocols {
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if strings.HasPrefix(upstream, proto) {
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return nil
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}
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}
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if strings.Contains(upstream, "://") {
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return fmt.Errorf("wrong protocol")
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}
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return checkPlainDNS(upstream)
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}
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// checkPlainDNS checks if host is plain DNS
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func checkPlainDNS(upstream string) error {
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// Check if host is ip without port
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if net.ParseIP(upstream) != nil {
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return nil
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}
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// Check if host is ip with port
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ip, port, err := net.SplitHostPort(upstream)
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if err != nil {
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return err
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}
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if net.ParseIP(ip) == nil {
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return fmt.Errorf("%s is not a valid IP", ip)
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}
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_, err = strconv.ParseInt(port, 0, 64)
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if err != nil {
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return fmt.Errorf("%s is not a valid port: %s", port, err)
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}
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return nil
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}
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func handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) {
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log.Tracef("%s %v", r.Method, r.URL)
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upstreamConfig := upstreamConfig{}
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err := json.NewDecoder(r.Body).Decode(&upstreamConfig)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Failed to read request body: %s", err)
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return
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}
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if len(upstreamConfig.Upstreams) == 0 {
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httpError(w, http.StatusBadRequest, "No servers specified")
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return
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}
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result := map[string]string{}
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for _, host := range upstreamConfig.Upstreams {
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err = checkDNS(host, upstreamConfig.BootstrapDNS)
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if err != nil {
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log.Info("%v", 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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httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
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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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httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
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}
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}
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|
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func checkDNS(input string, bootstrap []string) error {
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if err := validateUpstream(input); err != nil {
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return fmt.Errorf("wrong upstream format: %s", err)
|
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}
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|
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if len(bootstrap) == 0 {
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bootstrap = defaultBootstrap
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}
|
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log.Debug("Checking if DNS %s works...", input)
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u, err := upstream.AddressToUpstream(input, upstream.Options{Bootstrap: bootstrap, Timeout: dnsforward.DefaultTimeout})
|
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if err != nil {
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return fmt.Errorf("failed to choose upstream for %s: %s", input, err)
|
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}
|
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|
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req := dns.Msg{}
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req.Id = dns.Id()
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req.RecursionDesired = true
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req.Question = []dns.Question{
|
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{Name: "google-public-dns-a.google.com.", Qtype: dns.TypeA, Qclass: dns.ClassINET},
|
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}
|
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reply, err := u.Exchange(&req)
|
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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 len(reply.Answer) != 1 {
|
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return fmt.Errorf("DNS server %s returned wrong answer", input)
|
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}
|
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if t, ok := reply.Answer[0].(*dns.A); ok {
|
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if !net.IPv4(8, 8, 8, 8).Equal(t.A) {
|
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return fmt.Errorf("DNS server %s returned wrong answer: %v", input, t.A)
|
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}
|
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}
|
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|
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log.Debug("DNS %s works OK", input)
|
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return nil
|
|
}
|
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|
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func handleGetVersionJSON(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
now := time.Now()
|
|
if now.Sub(versionCheckLastTime) <= versionCheckPeriod && len(versionCheckJSON) != 0 {
|
|
// return cached copy
|
|
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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httpError(w, http.StatusBadGateway, "Couldn't get version check json from %s: %T %s\n", versionCheckURL, err, err)
|
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return
|
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}
|
|
if resp != nil && resp.Body != nil {
|
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defer resp.Body.Close()
|
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}
|
|
|
|
// read the body entirely
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
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httpError(w, http.StatusBadGateway, "Couldn't read response body from %s: %s", versionCheckURL, err)
|
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return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(body)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
|
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}
|
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|
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versionCheckLastTime = now
|
|
versionCheckJSON = body
|
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}
|
|
|
|
// ---------
|
|
// filtering
|
|
// ---------
|
|
|
|
func handleFilteringEnable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
config.DNS.FilteringEnabled = true
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleFilteringDisable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
config.DNS.FilteringEnabled = false
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleFilteringStatus(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
data := map[string]interface{}{
|
|
"enabled": config.DNS.FilteringEnabled,
|
|
}
|
|
|
|
config.RLock()
|
|
data["filters"] = config.Filters
|
|
data["user_rules"] = config.UserRules
|
|
jsonVal, err := json.Marshal(data)
|
|
config.RUnlock()
|
|
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(jsonVal)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
func handleFilteringAddURL(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
f := filter{}
|
|
err := json.NewDecoder(r.Body).Decode(&f)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Failed to parse request body json: %s", err)
|
|
return
|
|
}
|
|
|
|
if len(f.URL) == 0 {
|
|
http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if valid := govalidator.IsRequestURL(f.URL); !valid {
|
|
http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
// Check for duplicates
|
|
for i := range config.Filters {
|
|
if config.Filters[i].URL == f.URL {
|
|
httpError(w, http.StatusBadRequest, "Filter URL already added -- %s", f.URL)
|
|
return
|
|
}
|
|
}
|
|
|
|
// Set necessary properties
|
|
f.ID = assignUniqueFilterID()
|
|
f.Enabled = true
|
|
|
|
// Download the filter contents
|
|
ok, err := f.update(true)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Couldn't fetch filter from url %s: %s", f.URL, err)
|
|
return
|
|
}
|
|
if f.RulesCount == 0 {
|
|
httpError(w, http.StatusBadRequest, "Filter at the url %s has no rules (maybe it points to blank page?)", f.URL)
|
|
return
|
|
}
|
|
if !ok {
|
|
httpError(w, http.StatusBadRequest, "Filter at the url %s is invalid (maybe it points to blank page?)", f.URL)
|
|
return
|
|
}
|
|
|
|
// Save the filter contents
|
|
err = f.save()
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Failed to save filter %d due to %s", f.ID, err)
|
|
return
|
|
}
|
|
|
|
// URL is deemed valid, append it to filters, update config, write new filter file and tell dns to reload it
|
|
// TODO: since we directly feed filters in-memory, revisit if writing configs is always necessary
|
|
config.Filters = append(config.Filters, f)
|
|
err = writeAllConfigs()
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't write config file: %s", err)
|
|
return
|
|
}
|
|
|
|
err = reconfigureDNSServer()
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't reconfigure the DNS server: %s", err)
|
|
}
|
|
|
|
_, err = fmt.Fprintf(w, "OK %d rules\n", f.RulesCount)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
|
|
}
|
|
}
|
|
|
|
func handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
parameters, err := parseParametersFromBody(r.Body)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
|
|
return
|
|
}
|
|
|
|
url, ok := parameters["url"]
|
|
if !ok {
|
|
http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if valid := govalidator.IsRequestURL(url); !valid {
|
|
http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
// go through each element and delete if url matches
|
|
newFilters := config.Filters[:0]
|
|
for _, filter := range config.Filters {
|
|
if filter.URL != url {
|
|
newFilters = append(newFilters, filter)
|
|
} else {
|
|
// Remove the filter file
|
|
err := os.Remove(filter.Path())
|
|
if err != nil && !os.IsNotExist(err) {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't remove the filter file: %s", err)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
// Update the configuration after removing filter files
|
|
config.Filters = newFilters
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleFilteringEnableURL(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
parameters, err := parseParametersFromBody(r.Body)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
|
|
return
|
|
}
|
|
|
|
url, ok := parameters["url"]
|
|
if !ok {
|
|
http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if valid := govalidator.IsRequestURL(url); !valid {
|
|
http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
found := false
|
|
for i := range config.Filters {
|
|
filter := &config.Filters[i] // otherwise we will be operating on a copy
|
|
if filter.URL == url {
|
|
filter.Enabled = true
|
|
found = true
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
http.Error(w, "URL parameter was not previously added", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
// kick off refresh of rules from new URLs
|
|
refreshFiltersIfNecessary(false)
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleFilteringDisableURL(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
parameters, err := parseParametersFromBody(r.Body)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
|
|
return
|
|
}
|
|
|
|
url, ok := parameters["url"]
|
|
if !ok {
|
|
http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if valid := govalidator.IsRequestURL(url); !valid {
|
|
http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
found := false
|
|
for i := range config.Filters {
|
|
filter := &config.Filters[i] // otherwise we will be operating on a copy
|
|
if filter.URL == url {
|
|
filter.Enabled = false
|
|
found = true
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
http.Error(w, "URL parameter was not previously added", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleFilteringSetRules(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
body, err := ioutil.ReadAll(r.Body)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Failed to read request body: %s", err)
|
|
return
|
|
}
|
|
|
|
config.UserRules = strings.Split(string(body), "\n")
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleFilteringRefresh(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
force := r.URL.Query().Get("force")
|
|
updated := refreshFiltersIfNecessary(force != "")
|
|
fmt.Fprintf(w, "OK %d filters updated\n", updated)
|
|
}
|
|
|
|
// ------------
|
|
// safebrowsing
|
|
// ------------
|
|
|
|
func handleSafeBrowsingEnable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
config.DNS.SafeBrowsingEnabled = true
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleSafeBrowsingDisable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
config.DNS.SafeBrowsingEnabled = false
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleSafeBrowsingStatus(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
data := map[string]interface{}{
|
|
"enabled": config.DNS.SafeBrowsingEnabled,
|
|
}
|
|
jsonVal, err := json.Marshal(data)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(jsonVal)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
// --------
|
|
// parental
|
|
// --------
|
|
func handleParentalEnable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
parameters, err := parseParametersFromBody(r.Body)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
|
|
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.DNS.ParentalSensitivity = i
|
|
config.DNS.ParentalEnabled = true
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleParentalDisable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
config.DNS.ParentalEnabled = false
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleParentalStatus(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
data := map[string]interface{}{
|
|
"enabled": config.DNS.ParentalEnabled,
|
|
}
|
|
if config.DNS.ParentalEnabled {
|
|
data["sensitivity"] = config.DNS.ParentalSensitivity
|
|
}
|
|
jsonVal, err := json.Marshal(data)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(jsonVal)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
// ------------
|
|
// safebrowsing
|
|
// ------------
|
|
|
|
func handleSafeSearchEnable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
config.DNS.SafeSearchEnabled = true
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleSafeSearchDisable(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
config.DNS.SafeSearchEnabled = false
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
}
|
|
|
|
func handleSafeSearchStatus(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
data := map[string]interface{}{
|
|
"enabled": config.DNS.SafeSearchEnabled,
|
|
}
|
|
jsonVal, err := json.Marshal(data)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
_, err = w.Write(jsonVal)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
type ipport struct {
|
|
IP string `json:"ip,omitempty"`
|
|
Port int `json:"port"`
|
|
Warning string `json:"warning"`
|
|
}
|
|
|
|
type firstRunData struct {
|
|
Web ipport `json:"web"`
|
|
DNS ipport `json:"dns"`
|
|
Username string `json:"username,omitempty"`
|
|
Password string `json:"password,omitempty"`
|
|
Interfaces map[string]interface{} `json:"interfaces"`
|
|
}
|
|
|
|
func handleInstallGetAddresses(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
data := firstRunData{}
|
|
|
|
// find out if port 80 is available -- if not, fall back to 3000
|
|
if checkPortAvailable("", 80) == nil {
|
|
data.Web.Port = 80
|
|
} else {
|
|
data.Web.Port = 3000
|
|
}
|
|
|
|
// find out if port 53 is available -- if not, show a big warning
|
|
data.DNS.Port = 53
|
|
if checkPacketPortAvailable("", 53) != nil {
|
|
data.DNS.Warning = "Port 53 is not available for binding -- this will make DNS clients unable to contact AdGuard Home."
|
|
}
|
|
|
|
ifaces, err := getValidNetInterfacesForWeb()
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't get interfaces: %s", err)
|
|
return
|
|
}
|
|
|
|
data.Interfaces = make(map[string]interface{})
|
|
for _, iface := range ifaces {
|
|
data.Interfaces[iface.Name] = iface
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
err = json.NewEncoder(w).Encode(data)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to marshal default addresses to json: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
func handleInstallConfigure(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
newSettings := firstRunData{}
|
|
err := json.NewDecoder(r.Body).Decode(&newSettings)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Failed to parse new config json: %s", err)
|
|
return
|
|
}
|
|
|
|
restartHTTP := true
|
|
if config.BindHost == newSettings.Web.IP && config.BindPort == newSettings.Web.Port {
|
|
// no need to rebind
|
|
restartHTTP = false
|
|
}
|
|
|
|
// validate that hosts and ports are bindable
|
|
if restartHTTP {
|
|
err = checkPortAvailable(newSettings.Web.IP, newSettings.Web.Port)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Impossible to listen on IP:port %s due to %s", net.JoinHostPort(newSettings.Web.IP, strconv.Itoa(newSettings.Web.Port)), err)
|
|
return
|
|
}
|
|
}
|
|
|
|
err = checkPacketPortAvailable(newSettings.DNS.IP, newSettings.DNS.Port)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Impossible to listen on IP:port %s due to %s", net.JoinHostPort(newSettings.DNS.IP, strconv.Itoa(newSettings.DNS.Port)), err)
|
|
return
|
|
}
|
|
|
|
config.firstRun = false
|
|
config.BindHost = newSettings.Web.IP
|
|
config.BindPort = newSettings.Web.Port
|
|
config.DNS.BindHost = newSettings.DNS.IP
|
|
config.DNS.Port = newSettings.DNS.Port
|
|
config.AuthName = newSettings.Username
|
|
config.AuthPass = newSettings.Password
|
|
|
|
if config.DNS.Port != 0 {
|
|
err = startDNSServer()
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't start DNS server: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
httpUpdateConfigReloadDNSReturnOK(w, r)
|
|
// this needs to be done in a goroutine because Shutdown() is a blocking call, and it will block
|
|
// until all requests are finished, and _we_ are inside a request right now, so it will block indefinitely
|
|
if restartHTTP {
|
|
go func() {
|
|
httpServer.Shutdown(context.TODO())
|
|
}()
|
|
}
|
|
}
|
|
|
|
// --------------
|
|
// DNS-over-HTTPS
|
|
// --------------
|
|
func handleDOH(w http.ResponseWriter, r *http.Request) {
|
|
log.Tracef("%s %v", r.Method, r.URL)
|
|
if r.TLS == nil {
|
|
httpError(w, http.StatusNotFound, "Not Found")
|
|
return
|
|
}
|
|
|
|
if !isRunning() {
|
|
httpError(w, http.StatusInternalServerError, "DNS server is not running")
|
|
return
|
|
}
|
|
|
|
dnsServer.ServeHTTP(w, r)
|
|
}
|
|
|
|
// ------------------------
|
|
// registration of handlers
|
|
// ------------------------
|
|
func registerInstallHandlers() {
|
|
http.HandleFunc("/control/install/get_addresses", preInstall(ensureGET(handleInstallGetAddresses)))
|
|
http.HandleFunc("/control/install/configure", preInstall(ensurePOST(handleInstallConfigure)))
|
|
}
|
|
|
|
func registerControlHandlers() {
|
|
http.HandleFunc("/control/status", postInstall(optionalAuth(ensureGET(handleStatus))))
|
|
http.HandleFunc("/control/enable_protection", postInstall(optionalAuth(ensurePOST(handleProtectionEnable))))
|
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http.HandleFunc("/control/disable_protection", postInstall(optionalAuth(ensurePOST(handleProtectionDisable))))
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http.HandleFunc("/control/querylog", postInstall(optionalAuth(ensureGET(handleQueryLog))))
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http.HandleFunc("/control/querylog_enable", postInstall(optionalAuth(ensurePOST(handleQueryLogEnable))))
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http.HandleFunc("/control/querylog_disable", postInstall(optionalAuth(ensurePOST(handleQueryLogDisable))))
|
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http.HandleFunc("/control/set_upstreams_config", postInstall(optionalAuth(ensurePOST(handleSetUpstreamConfig))))
|
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http.HandleFunc("/control/test_upstream_dns", postInstall(optionalAuth(ensurePOST(handleTestUpstreamDNS))))
|
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http.HandleFunc("/control/i18n/change_language", postInstall(optionalAuth(ensurePOST(handleI18nChangeLanguage))))
|
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http.HandleFunc("/control/i18n/current_language", postInstall(optionalAuth(ensureGET(handleI18nCurrentLanguage))))
|
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http.HandleFunc("/control/stats_top", postInstall(optionalAuth(ensureGET(handleStatsTop))))
|
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http.HandleFunc("/control/stats", postInstall(optionalAuth(ensureGET(handleStats))))
|
|
http.HandleFunc("/control/stats_history", postInstall(optionalAuth(ensureGET(handleStatsHistory))))
|
|
http.HandleFunc("/control/stats_reset", postInstall(optionalAuth(ensurePOST(handleStatsReset))))
|
|
http.HandleFunc("/control/version.json", postInstall(optionalAuth(handleGetVersionJSON)))
|
|
http.HandleFunc("/control/filtering/enable", postInstall(optionalAuth(ensurePOST(handleFilteringEnable))))
|
|
http.HandleFunc("/control/filtering/disable", postInstall(optionalAuth(ensurePOST(handleFilteringDisable))))
|
|
http.HandleFunc("/control/filtering/add_url", postInstall(optionalAuth(ensurePUT(handleFilteringAddURL))))
|
|
http.HandleFunc("/control/filtering/remove_url", postInstall(optionalAuth(ensureDELETE(handleFilteringRemoveURL))))
|
|
http.HandleFunc("/control/filtering/enable_url", postInstall(optionalAuth(ensurePOST(handleFilteringEnableURL))))
|
|
http.HandleFunc("/control/filtering/disable_url", postInstall(optionalAuth(ensurePOST(handleFilteringDisableURL))))
|
|
http.HandleFunc("/control/filtering/refresh", postInstall(optionalAuth(ensurePOST(handleFilteringRefresh))))
|
|
http.HandleFunc("/control/filtering/status", postInstall(optionalAuth(ensureGET(handleFilteringStatus))))
|
|
http.HandleFunc("/control/filtering/set_rules", postInstall(optionalAuth(ensurePUT(handleFilteringSetRules))))
|
|
http.HandleFunc("/control/safebrowsing/enable", postInstall(optionalAuth(ensurePOST(handleSafeBrowsingEnable))))
|
|
http.HandleFunc("/control/safebrowsing/disable", postInstall(optionalAuth(ensurePOST(handleSafeBrowsingDisable))))
|
|
http.HandleFunc("/control/safebrowsing/status", postInstall(optionalAuth(ensureGET(handleSafeBrowsingStatus))))
|
|
http.HandleFunc("/control/parental/enable", postInstall(optionalAuth(ensurePOST(handleParentalEnable))))
|
|
http.HandleFunc("/control/parental/disable", postInstall(optionalAuth(ensurePOST(handleParentalDisable))))
|
|
http.HandleFunc("/control/parental/status", postInstall(optionalAuth(ensureGET(handleParentalStatus))))
|
|
http.HandleFunc("/control/safesearch/enable", postInstall(optionalAuth(ensurePOST(handleSafeSearchEnable))))
|
|
http.HandleFunc("/control/safesearch/disable", postInstall(optionalAuth(ensurePOST(handleSafeSearchDisable))))
|
|
http.HandleFunc("/control/safesearch/status", postInstall(optionalAuth(ensureGET(handleSafeSearchStatus))))
|
|
http.HandleFunc("/control/dhcp/status", postInstall(optionalAuth(ensureGET(handleDHCPStatus))))
|
|
http.HandleFunc("/control/dhcp/interfaces", postInstall(optionalAuth(ensureGET(handleDHCPInterfaces))))
|
|
http.HandleFunc("/control/dhcp/set_config", postInstall(optionalAuth(ensurePOST(handleDHCPSetConfig))))
|
|
http.HandleFunc("/control/dhcp/find_active_dhcp", postInstall(optionalAuth(ensurePOST(handleDHCPFindActiveServer))))
|
|
|
|
RegisterTLSHandlers()
|
|
|
|
http.HandleFunc("/dns-query", postInstall(handleDOH))
|
|
}
|