114 lines
4.4 KiB
Lua
114 lines
4.4 KiB
Lua
--TODO:
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configFile="config.lua"
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function sendWebPage(conn,answertype)
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collectgarbage()
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if (ssid == nil) then
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ssid="Not set"
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end
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if (sntpserverhostname == nil) then
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sntpserverhostname="ptbtime1.ptb.de"
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end
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if (timezoneoffset == nil) then
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timezoneoffset=1
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end
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local buf="HTTP/1.1 200 OK\nServer: NodeMCU\nContent-Type: text/html\n\n"
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if (node.heap() < 8000) then
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buf = buf .. "<h1>Busy, please come later again</h1>"
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else
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buf = buf .. "<html>"
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buf = buf .. "<head><title>WordClock Setup Page</title>"
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buf = buf .. "</head><body>\n"
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buf = buf .. "<h1>Welcome to the WordClock</h1>Please note that all settings are mandatory<br /><br />"
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buf = buf .."<form action=\"\" method=\"POST\">"
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buf = buf .."<table id=\"table-6\">"
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buf = buf .."<tr><th>WIFI-SSID</b></th><td><input id=\"ssid\" name=\"ssid\" value=\"" .. ssid .. "\"></td><td>SSID of the wireless network</td></tr>"
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buf = buf .."<tr><th>WIFI-Password</th><td><input id=\"password\" name=\"password\"></td><td>Password of the wireless network</td></tr>"
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buf = buf .."<tr><th>SNTP Server</th><td><input id=\"sntpserver\" name=\"sntpserver\" value=\"" .. sntpserverhostname .. "\"></td><td>Server to sync the time with. Only one ntp server is allowed.</tr>"
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buf = buf .."<tr><th>Offset to UTC time</th><td><input id=\"timezoneoffset\" name=\"timezoneoffset\" value=\"" .. timezoneoffset .. "\"></td><td>Define the offset to UTC time in hours. For example +1 hour for Germany</tr>"
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buf = buf .. "<tr><td colspan=\"3\"><div align=\"center\"><input type=\"submit\" value=\"Save Configuration\" onclick=\"this.value='Submitting ..';this.disabled='disabled'; this.form.submit();\"></div></td></tr>"
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buf = buf .."</table></form>"
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if answertype==2 then
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buf = buf .. "<h2><font color=\"green\">New configuration saved</font></h2\n>"
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elseif answertype==3 then
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buf = buf .. "<h2><font color=\"red\">ERROR</font></h2\n>"
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elseif answertype==4 then
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buf = buf .. "<h2><font color=\"orange\">Not all parameters set</font></h2\n>"
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end
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buf = buf .. "\n</body></html>"
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end
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conn:send(buf)
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buf=nil
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collectgarbage()
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end
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function startWebServer()
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srv=net.createServer(net.TCP)
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srv:listen(80,function(conn)
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conn:on("receive", function(conn,payload)
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if (payload:find("GET /") ~= nil) then
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--here is code for handling http request from a web-browser
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ssid, password, bssid_set, bssid = wifi.sta.getconfig()
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sendWebPage(conn,1)
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conn:on("sent", function(conn) conn:close() end)
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else if (payload:find("POST /") ~=nil) then
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--code for handling the POST-request (updating settings)
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_, postdatastart = payload:find("\r\n\r\n")
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--Next lines catches POST-requests without POST-data....
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if postdatastart==nil then postdatastart = 1 end
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postRequestData=string.sub(payload,postdatastart+1)
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local _POST = {}
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for i, j in string.gmatch(postRequestData, "(%w+)=([^&]+)&*") do
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_POST[i] = j
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end
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postRequestData=nil
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if ((_POST.ssid~=nil) and (_POST.password~=nil) and (_POST.sntpserver~=nil) and (_POST.timezoneoffset~=nil)) then
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-- Safe configuration:
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file.remove(configFile .. ".new")
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file.open(configFile.. ".new", "w")
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file.write("-- Config\n" .. "wifi.sta.config(\"" .. _POST.ssid .. "\",\"" .. _POST.password .. "\")\n" .. "sntpserverhostname=\"" .. _POST.sntpserver .. "\"\n" .. "timezoneoffset=\"" .. _POST.timezoneoffset .. "\"\n")
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file.close()
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file.remove(configFile)
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if (file.rename(configFile .. ".new", configFile)) then
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dofile(configFile) -- load the new values
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sendWebPage(conn,2) -- success
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else
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sendWebPage(conn,3) -- error
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end
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else
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ssid, password, bssid_set, bssid = wifi.sta.getconfig()
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sendWebPage(conn,4) -- not all parameter set
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end
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conn:on("sent", function(conn) conn:close() end)
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else
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--here is code, if the connection is not from a webbrowser, i.e. telnet or nc
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global_c=conn
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function s_output(str)
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if(global_c~=nil)
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then global_c:send(str)
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end
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end
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node.output(s_output, 0)
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global_c:on("receive",function(c,l)
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node.input(l)
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end)
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global_c:on("disconnection",function(c)
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node.output(nil)
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global_c=nil
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end)
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print("Welcome to Word Clock")
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end
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end
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end)
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conn:on("disconnection", function(c)
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node.output(nil) -- un-register the redirect output function, output goes to serial
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end)
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end)
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end
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