113 lines
2.3 KiB
Go
113 lines
2.3 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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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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)
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type jsonInput struct {
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Action string `json:"action"`
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Params jsonInputParams `json:"params"`
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}
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type jsonInputParams struct {
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Server string `json:"server"`
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Session int `json:"session"`
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}
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type HttpServer struct {
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Port string
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ovpn *OpenVpnMgt
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}
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func parseJsonQuery(r *http.Request) (*jsonInput, error) {
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var in jsonInput
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body, err := ioutil.ReadAll(r.Body)
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if err != nil {
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return nil, err
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}
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if err = json.Unmarshal(body, &in); err !=
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nil {
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return nil, err
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}
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return &in, nil
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}
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func (h *HttpServer) handler(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-type", "application/javascript")
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fmt.Fprintf(w, "\n")
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}
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func (h *HttpServer) ajaxHandler(w http.ResponseWriter, r *http.Request) {
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var err error
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var jsonStr []byte
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w.Header().Set("Content-type", "application/json")
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// add CORS headers
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w.Header().Set("Access-Control-Allow-Origin", r.Header.Get("Origin"))
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w.Header().Set("Access-Control-Allow-Methods", "POST")
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w.Header().Set("Access-Control-Allow-Credentials", "true")
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w.Header().Set("Access-Control-Allow-Headers", "content-type, accept, origin, user-agent, Accept-Encoding")
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// stop here if the method is OPTIONS, to allow CORS to work
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if r.Method == "OPTIONS" {
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return
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}
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// stop here if the method is OPTIONS, to allow CORS to work
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if r.Method != "POST" {
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http.Error(w, "post only", 405)
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return
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}
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req, err := parseJsonQuery(r)
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if err != nil {
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log.Println(err)
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http.Error(w, "Invalid request", 500)
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return
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}
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switch req.Action {
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case "get-remotes":
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jsonStr, err = json.Marshal(h.ovpn)
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case "set-remote":
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err = h.ovpn.SetRemote(req.Params.Server, req.Params.Session)
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jsonStr = []byte("{\"status\": \"ok\"}")
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case "version":
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err, version := h.ovpn.Version()
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if err != nil {
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break
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}
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jsonStr, err = json.Marshal(version)
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case "stats":
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case "kill":
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default:
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err = errors.New("Invalid request")
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}
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if err != nil {
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http.Error(w, fmt.Sprintf("Error : %s", err), 500)
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return
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}
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fmt.Fprintf(w, "%s", jsonStr)
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return
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}
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func NewHTTPServer(port string, s *OpenVpnMgt) {
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h := &HttpServer{
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Port: port,
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ovpn: s,
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}
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http.HandleFunc("/ajax", h.ajaxHandler)
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http.HandleFunc("/", h.handler)
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log.Fatal(http.ListenAndServe(port, nil))
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}
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