webcommands: bidirectional
rnd
parent
b85ac575ba
commit
0a7c5d33d8
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@ -1,31 +1,68 @@
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// listen to web request and pass it to minetest, rnd 2018
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// listen to web request and pass it to minetest or back to web, rnd 2018
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// INSTRUCTIONS. url options:
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// 1./mtmsg/msg will store msg as message received from minetest ( minetest_message). note that msg cant contain spaces or newlines
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// 2./getwebmsg/ will reply = IP + ' ' + webmessage
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// 3./webmsg/msg will store message as webmessage
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// 4./getmtmsg will reply with minetest_message
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// NOTES: 1. avoids the need to deal with POST nastyness and complications like
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// https://stackoverflow.com/questions/4295782/how-do-you-extract-post-data-in-node-js
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const http = require('http');
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const hostname = '192.168.0.10' //write address of your router (it will be accessible from internet then if you open firewall for nodejs process)
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const port = 80;
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var webreq = ""
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var webreq = "" // message from web
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var mtreq = "" // message from mt
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// take request from web and pass it to minetest
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const server = http.createServer((req, res) => {
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res.statusCode = 200;
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res.setHeader('Content-Type', 'text/plain');
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if (req.url == '/favicon.ico') return // prevent passing this as request
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var pos = (req.url).indexOf("/MT");
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if (pos >=0) { // did request come from minetest? then answer with latest request
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res.write(webreq);webreq = "";res.end();return
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}
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//process web request and store it
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var msg = req.url;
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if (msg == '/favicon.ico') return // prevent passing this as request
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var pos = msg.indexOf("/",1); // gets the 2nd / in /part1/part2/...
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var cmd = msg.substring(1,pos);
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var response = ""
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var ip = req.connection.remoteAddress;
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webreq = ip + ' ' + req.url
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res.write('request received: ' + webreq);res.end(); // acknowledge request
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switch(cmd)
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{
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case "mtmsg":
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response = msg.substring(pos+1);
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mtreq = response
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break
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case "getmtmsg":
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response = mtreq; mtreq = ''
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break
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case "getwebmsg":
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response = webreq; webreq = ''
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break
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case "webmsg":
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webreq = ip + ' ' + msg.substring(pos+1);
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response = 'request received: ' + webreq + '\nuse /getmtmsg to view response from minetest'
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break
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default:
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response = 'INSTRUCTIONS. url options:\n'+
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'1./mtmsg/msg will store msg as message received from minetest ( minetest_message). note that msg cant contain spaces or newlines\n'+
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'2./getwebmsg/ will reply = IP + " " + webmessage\n'+
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'3./webmsg/msg will store message as webmessage\n'+
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'4./getmtmsg will reply with minetest_message\n'
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}
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if (msg!='' && cmd != 'getwebmsg') console.log('ip ' + ip + ', msg ' + msg)
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res.write(response); res.end()
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return
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});
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// make server listen
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server.listen(port, hostname, () => {
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console.log(`Server running at http://${hostname}:${port}/`);
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});
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@ -5,13 +5,14 @@
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https://nodejs.org/dist/v10.14.2/node-v10.14.2-win-x86.zip
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2. run nodejs server using run.bat
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:loop
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node --inspect myprogs/minetest_webcommands.js
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node $path/minetest_webcommands.js
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goto loop
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3. run robot and type 'http://192.168.0.10:80/hello this is a test' into browser
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3. run robot and type 'http://192.168.0.10/webmsg/hello this is a test' into browser
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(you need to write your router address here, i.e. ip accessible from internet OR lan address)
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--]]
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if not fetch then
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address = "192.168.0.10";
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fetch = _G.basic_robot.http_api.fetch;
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state = 0 -- ready to fetch new command
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-- WARNING: this is run outside pcall and can crash server if errors!
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@ -20,12 +21,39 @@ if not fetch then
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if not res.succeeded then self.label("#ERROR: data couldn't be downloaded :\n" .. minetest.serialize(res) ) return end
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if res.data == "" then return end
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local req = res.data; req = string.gsub(req,"%%20"," ")
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if res.data then self.label(os.clock() .. ' received cmd : ' .. req) end
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if res.data then
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self.label(os.date("%X") ..', cmd : ' .. req)
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local i = string.find(req," !")
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if i then
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run_commmand(string.sub(req,i+2))
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end
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end
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end
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admin = minetest.setting_get("name")
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run_commmand = function(message)
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local cmd, param = _G.string.match(message, "([^ ]+) *(.*)")
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if not param then
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param = ""
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end
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local cmd_def = minetest.chatcommands[cmd]
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if cmd_def then
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cmd_def.func(admin, param)
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else
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minetest.chat_send_all(admin..": "..message)
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end
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end
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MT2web = function(message)
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message = string.gsub(message," ","%%20") -- NOTE: if you send request that has 'space' in it there will be error 400!
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fetch({url = "http://".. address .. "/mtmsg/"..message, timeout = 5}, result)
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end
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MT2web("minetest robot started and listening.")
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end
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if state == 0 then
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fetch({url = "http://192.168.0.10/MT", timeout = 30}, result)
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fetch({url = "http://"..address.."/getwebmsg/", timeout = 5}, result)
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state = 1
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end
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