--TODO:
configFile="config.lua"
function sendWebPage(conn,answertype)
collectgarbage()
if (ssid == nil) then
ssid="Not set"
end
if (sntpserverhostname == nil) then
sntpserverhostname="ptbtime1.ptb.de"
end
if (timezoneoffset == nil) then
timezoneoffset=1
end
buf="HTTP/1.1 200 OK\nServer: NodeMCU\nContent-Type: text/html\n\n"
if (node.heap() < 8000) then
buf = buf .. "
"
buf = buf ..""
if answertype==2 then
buf = buf .. "
New configuration saved"
elseif answertype==3 then
buf = buf .. "
ERROR"
elseif answertype==4 then
buf = buf .. "
Not all parameters set"
end
buf = buf .. "\n"
end
conn:send(buf)
buf=nil
collectgarbage()
end
function startWebServer()
srv=net.createServer(net.TCP)
srv:listen(80,function(conn)
conn:on("receive", function(conn,payload)
if (payload:find("GET /") ~= nil) then
--here is code for handling http request from a web-browser
ssid, password, bssid_set, bssid = wifi.sta.getconfig()
sendWebPage(conn,1)
conn:on("sent", function(conn) conn:close() end)
else if (payload:find("POST /") ~=nil) then
--code for handling the POST-request (updating settings)
_, postdatastart = payload:find("\r\n\r\n")
--Next lines catches POST-requests without POST-data....
if postdatastart==nil then postdatastart = 1 end
postRequestData=string.sub(payload,postdatastart+1)
local _POST = {}
for i, j in string.gmatch(postRequestData, "(%w+)=([^&]+)&*") do
_POST[i] = j
end
postRequestData=nil
if ((_POST.ssid~=nil) and (_POST.password~=nil) and (_POST.sntpserver~=nil) and (_POST.timezoneoffset~=nil)) then
-- Safe configuration:
file.remove(configFile .. ".new")
file.open(configFile.. ".new", "w")
file.write("-- Config\n" .. "wifi.sta.config(\"" .. _POST.ssid .. "\",\"" .. _POST.password .. "\")\n" .. "sntpserverhostname=\"" .. _POST.sntpserver .. "\"\n" .. "timezoneoffset=\"" .. _POST.timezoneoffset .. "\"\n")
file.close()
file.remove(configFile)
if (file.rename(configFile .. ".new", configFile)) then
dofile(configFile) -- load the new values
sendWebPage(conn,2) -- success
else
sendWebPage(conn,3) -- error
end
else
ssid, password, bssid_set, bssid = wifi.sta.getconfig()
sendWebPage(conn,4) -- not all parameter set
end
conn:on("sent", function(conn) conn:close() end)
else
--here is code, if the connection is not from a webbrowser, i.e. telnet or nc
global_c=conn
function s_output(str)
if(global_c~=nil)
then global_c:send(str)
end
end
node.output(s_output, 0)
global_c:on("receive",function(c,l)
node.input(l)
end)
global_c:on("disconnection",function(c)
node.output(nil)
global_c=nil
end)
print("Welcome to Word Clock")
end
end
end)
conn:on("disconnection", function(c)
node.output(nil) -- un-register the redirect output function, output goes to serial
end)
end)
end