AdGuardHome/home/dns_rewrites.go
2019-07-29 11:48:24 +03:00

107 lines
2.5 KiB
Go

package home
import (
"encoding/json"
"net/http"
"github.com/AdguardTeam/AdGuardHome/dnsfilter"
"github.com/AdguardTeam/golibs/log"
)
type rewriteEntryJSON struct {
Domain string `json:"domain"`
Answer string `json:"answer"`
}
func handleRewriteList(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
arr := []*rewriteEntryJSON{}
config.RLock()
for _, ent := range config.DNS.Rewrites {
jsent := rewriteEntryJSON{
Domain: ent.Domain,
Answer: ent.Answer,
}
arr = append(arr, &jsent)
}
config.RUnlock()
w.Header().Set("Content-Type", "application/json")
err := json.NewEncoder(w).Encode(arr)
if err != nil {
httpError(w, http.StatusInternalServerError, "json.Encode: %s", err)
return
}
}
func handleRewriteAdd(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
jsent := rewriteEntryJSON{}
err := json.NewDecoder(r.Body).Decode(&jsent)
if err != nil {
httpError(w, http.StatusBadRequest, "json.Decode: %s", err)
return
}
ent := dnsfilter.RewriteEntry{
Domain: jsent.Domain,
Answer: jsent.Answer,
}
config.Lock()
config.DNS.Rewrites = append(config.DNS.Rewrites, ent)
config.Unlock()
log.Debug("Rewrites: added element: %s -> %s [%d]",
ent.Domain, ent.Answer, len(config.DNS.Rewrites))
err = writeAllConfigsAndReloadDNS()
if err != nil {
httpError(w, http.StatusBadRequest, "%s", err)
return
}
returnOK(w)
}
func handleRewriteDelete(w http.ResponseWriter, r *http.Request) {
log.Tracef("%s %v", r.Method, r.URL)
jsent := rewriteEntryJSON{}
err := json.NewDecoder(r.Body).Decode(&jsent)
if err != nil {
httpError(w, http.StatusBadRequest, "json.Decode: %s", err)
return
}
entDel := dnsfilter.RewriteEntry{
Domain: jsent.Domain,
Answer: jsent.Answer,
}
arr := []dnsfilter.RewriteEntry{}
config.Lock()
for _, ent := range config.DNS.Rewrites {
if ent == entDel {
log.Debug("Rewrites: removed element: %s -> %s", ent.Domain, ent.Answer)
continue
}
arr = append(arr, ent)
}
config.DNS.Rewrites = arr
config.Unlock()
err = writeAllConfigsAndReloadDNS()
if err != nil {
httpError(w, http.StatusBadRequest, "%s", err)
return
}
returnOK(w)
}
func registerRewritesHandlers() {
http.HandleFunc("/control/rewrite/list", postInstall(optionalAuth(ensureGET(handleRewriteList))))
http.HandleFunc("/control/rewrite/add", postInstall(optionalAuth(ensurePOST(handleRewriteAdd))))
http.HandleFunc("/control/rewrite/delete", postInstall(optionalAuth(ensurePOST(handleRewriteDelete))))
}