Handle special characters of HTTP POST

init.lua

@@ -17,6 +17,7 @@ end)
 bootledtimer:start()
 
 function mydofile(mod)
+    print("load:" .. mod)
     if (file.open(mod ..  ".lua")) then
       dofile( mod .. ".lua")
     elseif (file.open(mod ..  "_diet.lua")) then
@@ -36,7 +37,7 @@ initTimer:register(5000, tmr.ALARM_SINGLE, function (t)
     initTimer:unregister()
     initTimer=nil
     bootledtimer=nil
-    local modlist = { "timecore" , "displayword", "ds18b20", "mqtt", "main" }
+    local modlist = { "timecore" , "displayword", "ds18b20", "mqtt", "main", "webserver" }
     for i,mod in pairs(modlist) do
         if (file.open(mod .. "_diet.lua")) then
             file.remove(mod .. "_diet.lc")
@@ -59,6 +60,25 @@ initTimer:register(5000, tmr.ALARM_SINGLE, function (t)
         normalOperation()
     else
         -- Logic for inital setup
+	collectgarbage()
+	wifi.setmode(wifi.SOFTAP)
+	cfg={}
+	cfg.ssid="wordclock"
+	cfg.pwd="wordclock"
+	wifi.ap.config(cfg)
+
+	-- Write the buffer to the LEDs
+	local color=string.char(0,128,0)
+	local white=string.char(0,0,0)
+	local ledBuf= white:rep(6) .. color .. white:rep(7) .. color:rep(3) .. white:rep(44) .. color:rep(3) .. white:rep(50)
+	ws2812.write(ledBuf)
+	color=nil
+	white=nil
+	ledBuf=nil
+
+	print("Waiting in access point >wordclock< for Clients")
+	print("Please visit 192.168.4.1")
+	-- start the webserver module 
         mydofile("webserver")
     end
 end)

main.lua

@@ -8,6 +8,7 @@ rgbBuffer = ws2812.newBuffer(114, 3)
 
 function syncTimeFromInternet()
   if (syncRunning == nil) then
+    print("NTP: " .. tostring(sntpserverhostname))
     syncRunning=true
     sntp.sync(sntpserverhostname,
      function(sec,usec,server)
@@ -55,7 +56,6 @@ function displayTime()
      package.loaded["wordclock_diet"]=nil
 
      collectgarbage()
-     print("wc: " .. tostring(node.heap()))
      local dw = require("displayword_diet")
      if (dw ~= nil) then
         --if lines 4 to 6 are inverted due to hardware-fuckup, unfuck it here
@@ -109,6 +109,7 @@ function normalOperation()
 	   rgbBuffer:set(55, color) -- P
 	end
       elseif (setupCounter > 3) then
+       if (web == nil) then
         -- Here the WLAN is found, and something is done
         mydofile("mqtt")
 	rgbBuffer:fill(0,0,0) -- disable all LEDs
@@ -124,13 +125,20 @@ function normalOperation()
 	    print("NO Mqtt found")
 	    mydofile("telnet")
         end
+       else
+	    print("webserver prepared")
+       end
         setupCounter=setupCounter-1
       elseif (setupCounter > 2) then
+       if (web == nil) then
         if (startTelnetServer ~= nil) then
 	    startTelnetServer()
         else
 	    displayTime()
         end
+       else
+	    print("webserver supplant telnet")
+       end
         setupCounter=setupCounter-1
       elseif ( (alive % 120) == 0) then
         -- sync the time every 5 minutes
@@ -141,6 +149,11 @@ function normalOperation()
     	heapusage=nil
         alive = alive + 1
       else
+	if (colorBg ~= nil) then
+	  rgbBuffer:fill(string.byte(colorBg,1), string.byte(colorBg,2), string.byte(colorBg,3)) -- disable all LEDs
+	else
+	  rgbBuffer:fill(0,0,0) -- disable all LEDs
+	end
        displayTime()
        alive = alive + 1
       end
@@ -225,17 +238,30 @@ gpio.mode(3, gpio.INPUT)
 local btnCounter=0
 -- Start the time Thread handling the button
 local btntimer = tmr.create()
-btntimer:register(5000, tmr.ALARM_AUTO, function (t)
+btntimer:register(500, tmr.ALARM_AUTO, function (t)
      if (gpio.read(3) == 0) then
-	mlt:unregister()
+	-- stop the main loop
+	if (mlt ~= nil) then
+	    mlt:unregister()
+	    mlt = nil
+	end
         print("Button pressed " .. tostring(btnCounter))
         btnCounter = btnCounter + 5
-	for i=1,btnCounter do rgbBuffer:set(i, 128, 0, 0) end
+	
+	if ((web ~= nil) and (btnCounter < 50)) then
+  	  for i=1,btnCounter do rgbBuffer:set(i, 128, 0, 0) end
+	else
+  	  for i=1,btnCounter do rgbBuffer:set(i, 0, 128, 0) end
+	end
 	ws2812.write(rgbBuffer)
         if (btnCounter >= 110) then
             file.remove("config.lua")
             file.remove("config.lc")
             node.restart()
+	elseif (btnCounter == 10) then
+	    collectgarbage()
+	    mydofile("webserver")
+	    -- start the webserver module
         end
      end
 end)

os/esptool.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # ESP8266 & ESP32 family ROM Bootloader Utility
 # Copyright (C) 2014-2016 Fredrik Ahlberg, Angus Gratton, Espressif Systems (Shanghai) PTE LTD, other contributors as noted.

tools/initialDietFlash.sh

@@ -48,6 +48,10 @@ if [ "$FILES" != "config.lua" ]; then
 			echo "Compress $f ..."
 			out=$(echo "$f" | sed 's/.lua/_diet.lua/g')
 			$DIET ../$f -o ../diet/$out
+			if [ $? -ne 0 ]; then
+				echo "Failed to generate file"
+				exit $?
+			fi
 			OUTFILES="$OUTFILES diet/$out"
 		else
 			OUTFILES="$OUTFILES $f"

webpage.html

@@ -47,7 +47,14 @@ Please note that all settings are mandatory<br /><br />
 <tr><th>WIFI-Password</th><td><input id="password" name="password"></td><td>Password of the wireless network</td></tr>
 <tr><th>SNTP Server</th><td><input id="sntpserver" name="sntpserver" value="$SNTPSERVER"></td><td>Server to sync the time with. Only one ntp server is allowed.</td></tr> 
 <tr><th>Offset to UTC time</th><td><input id="timezoneoffset" name="timezoneoffset" value="$TIMEOFFSET"></td><td>Define the offset to UTC time in hours. For example +1 hour for Germany</td></tr>
-<tr><th>Foreground Color</th><td><input type="color" name="fcolor" value="$HEXCOLORFG"></td><td>LED Color for all minutes, divisible by five</td></tr>
+<tr><th>General Foreground Color</th><td><input type="color" name="fcolor" value="$HEXCOLORFG"></td><td>LED Color for all minutes, divisible by five</td></tr>
+<tr><th>Foreground Color Minute1</th><td><input type="color" name="mcolor1" value="$HEXCOLOR1"></td><td>LED Color for first single minute</td></tr>
+<tr><th>Foreground Color Minute2</th><td><input type="color" name="mcolor2" value="$HEXCOLOR2"></td><td>LED Color for second single minute</td></tr>
+<tr><th>Foreground Color Minute3</th><td><input type="color" name="mcolor3" value="$HEXCOLOR3"></td><td>LED Color for third single minute</td></tr>
+<tr><th>Foreground Color Minute4</th><td><input type="color" name="mcolor4" value="$HEXCOLOR4"></td><td>LED Color for fourth single minute</td></tr>
+<tr><th>Threequarter</th><td><input type="checkbox" name="threequarter" $THREEQUATER></td><td>3/4 instead of 1/4 before</td></tr>
+<tr><th>Adjust brightness</th><td><input type="checkbox" name="dim" $AUTODIM></td><td>Dim brightness automatically</td></tr>
+<input type="hidden" value="true" name="web" /><!-- Activate Webserver only -->
 <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>
 <tr><td colspan="3"><div align="center"><input type="submit" name="action" value="Reboot"></div></td></tr>
 </table>

webserver.lua

@@ -2,9 +2,28 @@
 local configFile="config.lua"
 local httpSending=false
 local sentBytes=0
+
+-- Source https://stackoverflow.com/questions/28916182/parse-parameters-out-of-url-in-lua#28921280
+function urldecode(s)
+  s = s:gsub('+', ' ')
+       :gsub('%%(%x%x)', function(h)
+                           return string.char(tonumber(h, 16))
+                         end)
+  return s
+end
+
 function sendPage(conn, nameOfFile, replaceMap)
   collectgarbage()
   print("Sending " .. nameOfFile .. " " .. sentBytes .. "B already; " .. node.heap() .. "B in heap")
+  if (sentBytes == 0) then
+    -- print status status
+    local statusColor=string.char(0,128,0)
+    if ((inv46 ~= nil) and (inv46 == "on")) then
+        ws2812.write(string.char(0,0,0):rep(55) .. statusColor:rep(2) .. string.char(0,0,0):rep(5) .. statusColor .. string.char(0,0,0):rep(49))
+    else
+        ws2812.write(string.char(0,0,0):rep(57) .. statusColor .. string.char(0,0,0):rep(5) .. statusColor:rep(2) .. string.char(0,0,0):rep(49))
+    end
+  end
   conn:on("sent", function(conn) 
     if (sentBytes == 0) then
         conn:close() 
@@ -32,6 +51,9 @@ function sendPage(conn, nameOfFile, replaceMap)
     local line = file.readline()
     
     while (line ~= nil) do
+         -- increase the amount of sent bytes
+        sentBytes=sentBytes+string.len(line)
+
         -- all placeholder begin with a $, so search for it in the current line
         if (line:find("$") ~= nil) then
             -- Replace the placeholder with the dynamic content
@@ -42,10 +64,6 @@ function sendPage(conn, nameOfFile, replaceMap)
                 end
             end
         end
-
-        
-        -- increase the amount of sent bytes
-        sentBytes=sentBytes+string.len(line)
         
         buf = buf .. line
         
@@ -67,6 +85,13 @@ function sendPage(conn, nameOfFile, replaceMap)
     if (string.len(buf) > 0) then
         conn:send(buf)
         print("Sent rest")
+        -- print status status
+        local statusColor=string.char(128,0,0)
+        if ((inv46 ~= nil) and (inv46 == "on")) then
+            ws2812.write(string.char(0,0,0):rep(55) .. statusColor:rep(2) .. string.char(0,0,0):rep(5) .. statusColor .. string.char(0,0,0):rep(49))
+        else
+            ws2812.write(string.char(0,0,0):rep(57) .. statusColor .. string.char(0,0,0):rep(5) .. statusColor:rep(2) .. string.char(0,0,0):rep(49))
+        end
     end
   end
 end
@@ -107,6 +132,14 @@ function fillDynamicMap()
     return replaceMap   
 end
 
+function readHex(source, variable)
+	local hexColor=string.sub(source, 4)
+	local red = tonumber(string.sub(hexColor, 1, 2), 16)
+	local green = tonumber(string.sub(hexColor, 3, 4), 16)
+	local blue = tonumber(string.sub(hexColor, 5, 6), 16)
+	file.write(variable.."=string.char(" .. green .. "," .. red .. "," .. blue .. ")\n")
+end
+
 function startWebServer()
  srv=net.createServer(net.TCP)
  srv:listen(80,function(conn)
@@ -119,10 +152,10 @@ function startWebServer()
     httpSending=true
    if (color == nil) then
         color=string.char(0,128,0)
-    end
-    ws2812.write(string.char(0,0,0):rep(56) .. color:rep(2) .. string.char(0,0,0):rep(4) .. color:rep(2) .. string.char(0,0,0):rep(48))
+    end    
     if (sendPage ~= nil) then
        print("Sending webpage.html (" .. tostring(node.heap()) .. "B free) ...")
+       mydofile("config")
        -- Load the sendPagewebcontent
        replaceMap=fillDynamicMap()
        sendPage(conn, "webpage.html", replaceMap)
@@ -156,68 +189,47 @@ function startWebServer()
         file.remove(configFile .. ".new")
         sec, _ = rtctime.get()
         file.open(configFile.. ".new", "w+")
-          file.write("-- Config\n" .. "station_cfg={}\nstation_cfg.ssid=\"" .. _POST.ssid .. "\"\nstation_cfg.pwd=\"" .. _POST.password .. "\"\nstation_cfg.save=false\nwifi.sta.config(station_cfg)\n")
-          file.write("sntpserverhostname=\"" .. _POST.sntpserver .. "\"\n" .. "timezoneoffset=\"" .. _POST.timezoneoffset .. "\"\n".. "inv46=\"" .. tostring(_POST.inv46) .. "\"\n" .. "dim=\"" .. tostring(_POST.dim) .. "\"\n")
+          file.write("-- Config\n" .. "station_cfg={}\nstation_cfg.ssid='" .. urldecode(_POST.ssid) .. "'\nstation_cfg.pwd='" .. urldecode(_POST.password) .. "'\nstation_cfg.save=false\nwifi.sta.config(station_cfg)\n")
+          file.write("sntpserverhostname=\"" .. _POST.sntpserver .. "\"\n" .. "timezoneoffset=\"" .. _POST.timezoneoffset .. "\"\n".. "inv46=nil\n")
         
         if ( _POST.fcolor ~= nil) then
             -- color=string.char(_POST.green, _POST.red, _POST.blue)  
             print ("Got fcolor: " .. _POST.fcolor)
-            local hexColor=string.sub(_POST.fcolor, 4)
-            local red = tonumber(string.sub(hexColor, 1, 2), 16)
-            local green = tonumber(string.sub(hexColor, 3, 4), 16)
-            local blue = tonumber(string.sub(hexColor, 5, 6), 16)
-            file.write("color=string.char(" .. green .. "," .. red .. "," .. blue .. ")\n")
-            -- fill the current values
-            color=string.char(green, red, blue)
+	    readHex(_POST.fcolor, "color")
         end
-        if ( _POST.colorMin1  ~= nil) then
-            local hexColor=string.sub(_POST.colorMin1, 4)
-            local red = tonumber(string.sub(hexColor, 1, 2), 16)
-            local green = tonumber(string.sub(hexColor, 3, 4), 16)
-            local blue = tonumber(string.sub(hexColor, 5, 6), 16)
-            file.write("color1=string.char(" .. green .. "," .. red .. "," .. blue .. ")\n")
-            -- fill the current values
-            color1=string.char(green, red, blue)
+        if ( _POST.mcolor1  ~= nil) then
+	    readHex(_POST.mcolor1, "color1")
         end
-        if ( _POST.colorMin2  ~= nil) then
-            local hexColor=string.sub(_POST.colorMin2, 4)
-            local red = tonumber(string.sub(hexColor, 1, 2), 16)
-            local green = tonumber(string.sub(hexColor, 3, 4), 16)
-            local blue = tonumber(string.sub(hexColor, 5, 6), 16)
-            file.write("color2=string.char(" .. green .. "," .. red .. "," .. blue .. ")\n")
-            -- fill the current values
-            color2=string.char(green, red, blue)
+        if ( _POST.mcolor2  ~= nil) then
+	    readHex(_POST.mcolor2, "color2")
         end
-        if ( _POST.colorMin3  ~= nil) then
-            local hexColor=string.sub(_POST.colorMin3, 4)
-            local red = tonumber(string.sub(hexColor, 1, 2), 16)
-            local green = tonumber(string.sub(hexColor, 3, 4), 16)
-            local blue = tonumber(string.sub(hexColor, 5, 6), 16)
-            file.write("color3=string.char(" .. green .. "," .. red .. "," .. blue .. ")\n")
-            -- fill the current values
-            color3=string.char(green, red, blue)
+        if ( _POST.mcolor3  ~= nil) then
+	    readHex(_POST.mcolor3, "color3")
         end
-        if ( _POST.colorMin4  ~= nil) then
-            local hexColor=string.sub(_POST.colorMin4, 4)
-            local red = tonumber(string.sub(hexColor, 1, 2), 16)
-            local green = tonumber(string.sub(hexColor, 3, 4), 16)
-            local blue = tonumber(string.sub(hexColor, 5, 6), 16)
-            file.write("color4=string.char(" .. green .. "," .. red .. "," .. blue .. ")\n")
-            -- fill the current values
-            color4=string.char(green, red, blue)
+        if ( _POST.mcolor4  ~= nil) then
+	    readHex(_POST.mcolor4, "color4")
         end
         if ( _POST.bcolor  ~= nil) then
             local hexColor=string.sub(_POST.bcolor, 4)
-            local red = tonumber(string.sub(hexColor, 1, 2), 16)
-            local green = tonumber(string.sub(hexColor, 3, 4), 16)
-            local blue = tonumber(string.sub(hexColor, 5, 6), 16)
-            file.write("colorBg=string.char(" .. green .. "," .. red .. "," .. blue .. ")\n")
-            -- fill the current values
-            colorBg=string.char(green, red, blue)
+	    readHex(_POST.bcolor, "colorBg")
         end
         if (getTime ~= nil) then
             time = getTime(sec, timezoneoffset)
             file.write("print(\"Config from " .. time.year .. "-" .. time.month .. "-" .. time.day .. " " .. time.hour .. ":" .. time.minute .. ":" .. time.second .. "\")\n")
+        end
+	    if (_POST.web ~= nil) then
+            file.write("web=true\n")
+            -- fill the current values
+            web=true
+        else
+            file.write("web=nil\n") -- use webserver instead of mqtt or telnet
+            -- fill the current values
+            web=nil
+        end
+        if (_POST.dim ~= nil) then
+            file.write("dim=\"" .. tostring(_POST.dim) .. "\"\n")
+        else
+            file.write("dim=nil\n") -- unset dimming functionality
         end
         if (_POST.threequater ~= nil) then
             file.write("threequater=true\n")
@@ -237,6 +249,7 @@ function startWebServer()
             print("Successfully")
 	    local mytimer = tmr.create()
 	    mytimer:register(50, tmr.ALARM_SINGLE, function (t)
+		mydofile("config")
                 replaceMap=fillDynamicMap()
                 replaceMap["$ADDITIONAL_LINE"]="<h2><font color=\"green\">New configuration saved</font></h2>"
                 print("Send success to client")
@@ -291,25 +304,5 @@ function startWebServer()
 
 end
 
-
--- start the webserver module 
-collectgarbage()
-wifi.setmode(wifi.SOFTAP)
-cfg={}
-cfg.ssid="wordclock"
-cfg.pwd="wordclock"
-wifi.ap.config(cfg)
-
--- Write the buffer to the LEDs
-local color=string.char(0,128,0)
-local white=string.char(0,0,0)
-local ledBuf= white:rep(6) .. color .. white:rep(7) .. color:rep(3) .. white:rep(44) .. color:rep(3) .. white:rep(50)
-ws2812.write(ledBuf)
-color=nil
-white=nil
-ledBuf=nil
-
-print("Waiting in access point >wordclock< for Clients")
-print("Please visit 192.168.4.1")
 startWebServer()
-collectgarbage()
+collectgarbage()