AdGuardHome/control.go

1037 lines
30 KiB
Go

package main
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net"
"net/http"
"os"
"sort"
"strconv"
"strings"
"sync"
"time"
"github.com/AdguardTeam/AdGuardHome/dnsforward"
"github.com/AdguardTeam/dnsproxy/upstream"
"github.com/AdguardTeam/golibs/log"
"github.com/AdguardTeam/golibs/utils"
"github.com/NYTimes/gziphandler"
"github.com/miekg/dns"
govalidator "gopkg.in/asaskevich/govalidator.v4"
)
const updatePeriod = time.Minute * 30
// cached version.json to avoid hammering github.io for each page reload
var versionCheckJSON []byte
var versionCheckLastTime time.Time
var protocols = []string{"tls://", "https://", "tcp://", "sdns://"}
const versionCheckURL = "https://adguardteam.github.io/AdGuardHome/version.json"
const versionCheckPeriod = time.Hour * 8
var transport = &http.Transport{
DialContext: customDialContext,
}
var client = &http.Client{
Timeout: time.Minute * 5,
Transport: transport,
}
var controlLock sync.Mutex
// ----------------
// helper functions
// ----------------
func returnOK(w http.ResponseWriter) {
_, err := fmt.Fprintf(w, "OK\n")
if err != nil {
httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
}
}
func httpError(w http.ResponseWriter, code int, format string, args ...interface{}) {
text := fmt.Sprintf(format, args...)
log.Info(text)
http.Error(w, text, code)
}
// ---------------
// dns run control
// ---------------
func writeAllConfigsAndReloadDNS() error {
err := writeAllConfigs()
if err != nil {
log.Error("Couldn't write all configs: %s", err)
return err
}
return reconfigureDNSServer()
}
func httpUpdateConfigReloadDNSReturnOK(w http.ResponseWriter, r *http.Request) {
err := writeAllConfigsAndReloadDNS()
if err != nil {
httpError(w, http.StatusInternalServerError, "Couldn't write config file: %s", err)
return
}
returnOK(w)
}
func handleStatus(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
dnsAddresses := []string{}
if config.DNS.BindHost == "0.0.0.0" {
ifaces, e := getValidNetInterfacesForWeb()
if e != nil {
log.Error("Couldn't get network interfaces: %v", e)
}
for _, iface := range ifaces {
for _, addr := range iface.Addresses {
dnsAddresses = append(dnsAddresses, addr)
}
}
}
if len(dnsAddresses) == 0 {
dnsAddresses = append(dnsAddresses, config.DNS.BindHost)
}
data := map[string]interface{}{
"dns_addresses": dnsAddresses,
"http_port": config.BindPort,
"dns_port": config.DNS.Port,
"protection_enabled": config.DNS.ProtectionEnabled,
"querylog_enabled": config.DNS.QueryLogEnabled,
"running": isRunning(),
"bootstrap_dns": config.DNS.BootstrapDNS,
"upstream_dns": config.DNS.UpstreamDNS,
"all_servers": config.DNS.AllServers,
"version": VersionString,
"language": config.Language,
}
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
}
}
func handleProtectionEnable(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
config.DNS.ProtectionEnabled = true
httpUpdateConfigReloadDNSReturnOK(w, r)
}
func handleProtectionDisable(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
config.DNS.ProtectionEnabled = false
httpUpdateConfigReloadDNSReturnOK(w, r)
}
// -----
// stats
// -----
func handleQueryLogEnable(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
config.DNS.QueryLogEnabled = true
httpUpdateConfigReloadDNSReturnOK(w, r)
}
func handleQueryLogDisable(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
config.DNS.QueryLogEnabled = false
httpUpdateConfigReloadDNSReturnOK(w, r)
}
func handleQueryLog(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
data := dnsServer.GetQueryLog()
jsonVal, err := json.Marshal(data)
if err != nil {
httpError(w, http.StatusInternalServerError, "Couldn't marshal data into 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)
}
}
func handleStatsTop(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
s := dnsServer.GetStatsTop()
// use manual json marshalling because we want maps to be sorted by value
statsJSON := bytes.Buffer{}
statsJSON.WriteString("{\n")
gen := func(json *bytes.Buffer, name string, top map[string]int, addComma bool) {
json.WriteString(" ")
json.WriteString(fmt.Sprintf("%q", name))
json.WriteString(": {\n")
sorted := sortByValue(top)
// no more than 50 entries
if len(sorted) > 50 {
sorted = sorted[:50]
}
for i, key := range sorted {
json.WriteString(" ")
json.WriteString(fmt.Sprintf("%q", key))
json.WriteString(": ")
json.WriteString(strconv.Itoa(top[key]))
if i+1 != len(sorted) {
json.WriteByte(',')
}
json.WriteByte('\n')
}
json.WriteString(" }")
if addComma {
json.WriteByte(',')
}
json.WriteByte('\n')
}
gen(&statsJSON, "top_queried_domains", s.Domains, true)
gen(&statsJSON, "top_blocked_domains", s.Blocked, true)
gen(&statsJSON, "top_clients", s.Clients, true)
statsJSON.WriteString(" \"stats_period\": \"24 hours\"\n")
statsJSON.WriteString("}\n")
w.Header().Set("Content-Type", "application/json")
_, err := w.Write(statsJSON.Bytes())
if err != nil {
httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
}
}
// handleStatsReset resets the stats caches
func handleStatsReset(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
dnsServer.PurgeStats()
_, err := fmt.Fprintf(w, "OK\n")
if err != nil {
httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
}
}
// handleStats returns aggregated stats data for the 24 hours
func handleStats(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
summed := dnsServer.GetAggregatedStats()
statsJSON, err := json.Marshal(summed)
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(statsJSON)
if err != nil {
httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
return
}
}
// HandleStatsHistory returns historical stats data for the 24 hours
func handleStatsHistory(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
// handle time unit and prepare our time window size
timeUnitString := r.URL.Query().Get("time_unit")
var timeUnit time.Duration
switch timeUnitString {
case "seconds":
timeUnit = time.Second
case "minutes":
timeUnit = time.Minute
case "hours":
timeUnit = time.Hour
case "days":
timeUnit = time.Hour * 24
default:
http.Error(w, "Must specify valid time_unit parameter", http.StatusBadRequest)
return
}
// parse start and end time
startTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("start_time"))
if err != nil {
httpError(w, http.StatusBadRequest, "Must specify valid start_time parameter: %s", err)
return
}
endTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("end_time"))
if err != nil {
httpError(w, http.StatusBadRequest, "Must specify valid end_time parameter: %s", err)
return
}
data, err := dnsServer.GetStatsHistory(timeUnit, startTime, endTime)
if err != nil {
httpError(w, http.StatusBadRequest, "Cannot get stats history: %s", err)
return
}
statsJSON, 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(statsJSON)
if err != nil {
httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
return
}
}
// sortByValue is a helper function for querylog API
func sortByValue(m map[string]int) []string {
type kv struct {
k string
v int
}
var ss []kv
for k, v := range m {
ss = append(ss, kv{k, v})
}
sort.Slice(ss, func(l, r int) bool {
return ss[l].v > ss[r].v
})
sorted := []string{}
for _, v := range ss {
sorted = append(sorted, v.k)
}
return sorted
}
// -----------------------
// upstreams configuration
// -----------------------
// TODO this struct will become unnecessary after config file rework
type upstreamConfig struct {
Upstreams []string `json:"upstream_dns"` // Upstreams
BootstrapDNS []string `json:"bootstrap_dns"` // Bootstrap DNS
AllServers bool `json:"all_servers"` // --all-servers param for dnsproxy
}
func handleSetUpstreamConfig(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
newconfig := upstreamConfig{}
err := json.NewDecoder(r.Body).Decode(&newconfig)
if err != nil {
httpError(w, http.StatusBadRequest, "Failed to parse new upstreams config json: %s", err)
return
}
err = validateUpstreams(newconfig.Upstreams)
if err != nil {
httpError(w, http.StatusBadRequest, "wrong upstreams specification: %s", err)
return
}
config.DNS.UpstreamDNS = defaultDNS
if len(newconfig.Upstreams) > 0 {
config.DNS.UpstreamDNS = newconfig.Upstreams
}
// bootstrap servers are plain DNS only.
for _, host := range newconfig.BootstrapDNS {
if err := checkPlainDNS(host); err != nil {
httpError(w, http.StatusBadRequest, "%s can not be used as bootstrap dns cause: %s", host, err)
return
}
}
config.DNS.BootstrapDNS = defaultBootstrap
if len(newconfig.BootstrapDNS) > 0 {
config.DNS.BootstrapDNS = newconfig.BootstrapDNS
}
config.DNS.AllServers = newconfig.AllServers
httpUpdateConfigReloadDNSReturnOK(w, r)
}
// validateUpstreams validates each upstream and returns an error if any upstream is invalid or if there are no default upstreams specified
func validateUpstreams(upstreams []string) error {
var defaultUpstreamFound bool
for _, u := range upstreams {
d, err := validateUpstream(u)
if err != nil {
return err
}
// Check this flag until default upstream will not be found
if !defaultUpstreamFound {
defaultUpstreamFound = d
}
}
// Return error if there are no default upstreams
if !defaultUpstreamFound {
return fmt.Errorf("no default upstreams specified")
}
return nil
}
func validateUpstream(u string) (bool, error) {
// Check if user tries to specify upstream for domain
u, defaultUpstream, err := separateUpstream(u)
if err != nil {
return defaultUpstream, err
}
// The special server address '#' means "use the default servers"
if u == "#" && !defaultUpstream {
return defaultUpstream, nil
}
// Check if the upstream has a valid protocol prefix
for _, proto := range protocols {
if strings.HasPrefix(u, proto) {
return defaultUpstream, nil
}
}
// Return error if the upstream contains '://' without any valid protocol
if strings.Contains(u, "://") {
return defaultUpstream, fmt.Errorf("wrong protocol")
}
// Check if upstream is valid plain DNS
return defaultUpstream, checkPlainDNS(u)
}
// separateUpstream returns upstream without specified domains and a bool flag that indicates if no domains were specified
// error will be returned if upstream per domain specification is invalid
func separateUpstream(upstream string) (string, bool, error) {
defaultUpstream := true
if strings.HasPrefix(upstream, "[/") {
defaultUpstream = false
// split domains and upstream string
domainsAndUpstream := strings.Split(strings.TrimPrefix(upstream, "[/"), "/]")
if len(domainsAndUpstream) != 2 {
return "", defaultUpstream, fmt.Errorf("wrong DNS upstream per domain specification: %s", upstream)
}
// split domains list and validate each one
for _, host := range strings.Split(domainsAndUpstream[0], "/") {
if host != "" {
if err := utils.IsValidHostname(host); err != nil {
return "", defaultUpstream, err
}
}
}
upstream = domainsAndUpstream[1]
}
return upstream, defaultUpstream, nil
}
// checkPlainDNS checks if host is plain DNS
func checkPlainDNS(upstream string) error {
// Check if host is ip without port
if net.ParseIP(upstream) != nil {
return nil
}
// Check if host is ip with port
ip, port, err := net.SplitHostPort(upstream)
if err != nil {
return err
}
if net.ParseIP(ip) == nil {
return fmt.Errorf("%s is not a valid IP", ip)
}
_, err = strconv.ParseInt(port, 0, 64)
if err != nil {
return fmt.Errorf("%s is not a valid port: %s", port, err)
}
return nil
}
func handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
upstreamConfig := upstreamConfig{}
err := json.NewDecoder(r.Body).Decode(&upstreamConfig)
if err != nil {
httpError(w, http.StatusBadRequest, "Failed to read request body: %s", err)
return
}
if len(upstreamConfig.Upstreams) == 0 {
httpError(w, http.StatusBadRequest, "No servers specified")
return
}
result := map[string]string{}
for _, host := range upstreamConfig.Upstreams {
err = checkDNS(host, upstreamConfig.BootstrapDNS)
if err != nil {
log.Info("%v", err)
result[host] = err.Error()
} else {
result[host] = "OK"
}
}
jsonVal, err := json.Marshal(result)
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, "Couldn't write body: %s", err)
}
}
func checkDNS(input string, bootstrap []string) error {
// separate upstream from domains list
input, defaultUpstream, err := separateUpstream(input)
if err != nil {
return fmt.Errorf("wrong upstream format: %s", err)
}
// No need to check this entrance
if input == "#" && !defaultUpstream {
return nil
}
if _, err := validateUpstream(input); err != nil {
return fmt.Errorf("wrong upstream format: %s", err)
}
if len(bootstrap) == 0 {
bootstrap = defaultBootstrap
}
log.Debug("Checking if DNS %s works...", input)
u, err := upstream.AddressToUpstream(input, upstream.Options{Bootstrap: bootstrap, Timeout: dnsforward.DefaultTimeout})
if err != nil {
return fmt.Errorf("failed to choose upstream for %s: %s", input, err)
}
req := dns.Msg{}
req.Id = dns.Id()
req.RecursionDesired = true
req.Question = []dns.Question{
{Name: "google-public-dns-a.google.com.", Qtype: dns.TypeA, Qclass: dns.ClassINET},
}
reply, err := u.Exchange(&req)
if err != nil {
return fmt.Errorf("couldn't communicate with DNS server %s: %s", input, err)
}
if len(reply.Answer) != 1 {
return fmt.Errorf("DNS server %s returned wrong answer", input)
}
if t, ok := reply.Answer[0].(*dns.A); ok {
if !net.IPv4(8, 8, 8, 8).Equal(t.A) {
return fmt.Errorf("DNS server %s returned wrong answer: %v", input, t.A)
}
}
log.Debug("DNS %s works OK", input)
return nil
}
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")
w.Write(versionCheckJSON)
return
}
resp, err := client.Get(versionCheckURL)
if err != nil {
httpError(w, http.StatusBadGateway, "Couldn't get version check json from %s: %T %s\n", versionCheckURL, err, err)
return
}
if resp != nil && resp.Body != nil {
defer resp.Body.Close()
}
// read the body entirely
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
httpError(w, http.StatusBadGateway, "Couldn't read response body from %s: %s", versionCheckURL, err)
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)
}
versionCheckLastTime = now
versionCheckJSON = body
}
// ---------
// 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
if filterExists(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()
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
if !filterAdd(f) {
httpError(w, http.StatusBadRequest, "Filter URL already added -- %s", f.URL)
return
}
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)
return
}
_, 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
config.Lock()
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
config.Unlock()
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 := filterEnable(url, true)
if !found {
http.Error(w, "URL parameter was not previously added", http.StatusBadRequest)
return
}
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 := filterEnable(url, false)
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)
updated := refreshFiltersIfNecessary(true)
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
}
}
// --------------
// 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 registerControlHandlers() {
http.HandleFunc("/control/status", postInstall(optionalAuth(ensureGET(handleStatus))))
http.HandleFunc("/control/enable_protection", postInstall(optionalAuth(ensurePOST(handleProtectionEnable))))
http.HandleFunc("/control/disable_protection", postInstall(optionalAuth(ensurePOST(handleProtectionDisable))))
http.Handle("/control/querylog", postInstallHandler(optionalAuthHandler(gziphandler.GzipHandler(ensureGETHandler(handleQueryLog)))))
http.HandleFunc("/control/querylog_enable", postInstall(optionalAuth(ensurePOST(handleQueryLogEnable))))
http.HandleFunc("/control/querylog_disable", postInstall(optionalAuth(ensurePOST(handleQueryLogDisable))))
http.HandleFunc("/control/set_upstreams_config", postInstall(optionalAuth(ensurePOST(handleSetUpstreamConfig))))
http.HandleFunc("/control/test_upstream_dns", postInstall(optionalAuth(ensurePOST(handleTestUpstreamDNS))))
http.HandleFunc("/control/i18n/change_language", postInstall(optionalAuth(ensurePOST(handleI18nChangeLanguage))))
http.HandleFunc("/control/i18n/current_language", postInstall(optionalAuth(ensureGET(handleI18nCurrentLanguage))))
http.HandleFunc("/control/stats_top", postInstall(optionalAuth(ensureGET(handleStatsTop))))
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(ensurePOST(handleFilteringAddURL))))
http.HandleFunc("/control/filtering/remove_url", postInstall(optionalAuth(ensurePOST(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(ensurePOST(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()
RegisterClientsHandlers()
http.HandleFunc("/dns-query", postInstall(handleDOH))
}