mirror of
https://github.com/zhaojh329/rttys.git
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115 lines
2.9 KiB
Go
115 lines
2.9 KiB
Go
/*
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* Copyright (C) 2017 Jianhui Zhao <jianhuizhao329@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*/
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package main
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import (
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"time"
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"net/http"
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"io/ioutil"
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"encoding/json"
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"github.com/gorilla/websocket"
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)
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const (
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COMMAND_OK = iota
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COMMAND_ERR_TIMEOUT
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COMMAND_ERR_NOTFOUND
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COMMAND_ERR_READ
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COMMAND_ERR_LOGIN
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COMMAND_ERR_SYS
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COMMAND_PARAMETER_ERR
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COMMAND_DEV_OFFLINE
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)
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type CommandReq struct {
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ID uint32 `json:"id"`
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Username string `json:"username"`
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Password string `json:"password"`
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Devid string `json:"devid"`
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Cmd string `json:"cmd"`
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Params []string `json:"params"`
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Env []string `json:"env"`
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}
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type CommandResult struct {
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ID uint32 `json:"id,omitempty"`
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Err int `json:err`
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Msg string `json:"msg"`
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Code int `json:"code"`
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Stdout string `json:"stdout"`
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Stderr string `json:"stderr"`
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}
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func serveCmd(br *Bridge, w http.ResponseWriter, r *http.Request) {
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ticker := time.NewTicker(time.Second * 5)
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defer func() {
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ticker.Stop()
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}()
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err := COMMAND_OK
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msg := "OK"
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body, _ := ioutil.ReadAll(r.Body)
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r.Body.Close()
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req := CommandReq{}
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json.Unmarshal(body, &req)
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if req.Devid == "" || req.Cmd == "" {
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err = COMMAND_PARAMETER_ERR
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msg = "devid and cmd required"
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} else if dev, ok := br.devices[req.Devid]; !ok {
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err = COMMAND_DEV_OFFLINE
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msg = "Device is offline"
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} else {
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req.ID = dev.cmdid
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dev.cmd[req.ID] = make(chan *wsMessage)
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dev.cmdid = dev.cmdid + 1
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if dev.cmdid == 1024 {
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dev.cmdid = 0
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}
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js, _ := json.Marshal(req)
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dev.wsWrite(websocket.TextMessage, js)
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select {
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case wsMsg := <- dev.cmd[req.ID]:
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res := CommandResult{}
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json.Unmarshal(wsMsg.data, &res)
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delete(dev.cmd, res.ID)
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res.ID = 0
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js, _ = json.Marshal(res)
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w.Write(js)
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return
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case <- ticker.C:
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err = COMMAND_ERR_TIMEOUT
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msg = "timeout"
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goto Err
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}
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}
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Err:
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res := CommandResult{Err: err, Msg: msg}
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js, _ := json.Marshal(res)
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w.Write(js)
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}
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