126 lines
4.6 KiB
Lua
126 lines
4.6 KiB
Lua
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---
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-- Working Example: https://www.youtube.com/watch?v=PDxTR_KJLhc
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-- @author Miguel (AllAboutEE.com)
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-- @description This example will read the first email in your inbox using IMAP and
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-- display it through serial. The email server must provided unecrypted access. The code
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-- was tested with an AOL and Time Warner cable email accounts (GMail and other services who do
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-- not support no SSL access will not work).
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local imap = require("imap")
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local IMAP_USERNAME = "email@domain.com"
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local IMAP_PASSWORD = "password"
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-- find out your unencrypted imap server and port
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-- from your email provided i.e. google "[my email service] imap settings" for example
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local IMAP_SERVER = "imap.service.com"
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local IMAP_PORT = "143"
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local IMAP_TAG = "t1" -- You do not need to change this
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local IMAP_DEBUG = true -- change to true if you would like to see the entire conversation between
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-- the ESP8266 and IMAP server
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local SSID = "ssid"
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local SSID_PASSWORD = "password"
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local count = 0 -- we will send several IMAP commands/requests, this variable helps keep track of which one to send
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local imap_socket, timer
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---
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-- @name setup
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-- @description A call back function used to begin reading email
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-- upon sucessfull connection to the IMAP server
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local function setup(sck)
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-- Set the email user name and password, IMAP tag, and if debugging output is needed
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imap.config(IMAP_USERNAME,
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IMAP_PASSWORD,
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IMAP_TAG,
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IMAP_DEBUG)
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imap.login(sck)
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end
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local subject = ""
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local from = ""
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local body = ""
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---
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-- @name do_next
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-- @description A call back function for a timer alarm used to check if the previous
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-- IMAP command reply has been processed. If the IMAP reply has been processed
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-- this function will call the next IMAP command function necessary to read the email
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local function do_next()
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-- Check if the IMAP reply was processed
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if(imap.response_processed() == true) then
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-- The IMAP reply was processed
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if (count == 0) then
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-- After logging in we need to select the email folder from which we wish to read
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-- in this case the INBOX folder
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imap.examine(imap_socket,"INBOX")
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count = count + 1
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elseif (count == 1) then
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-- After examining/selecting the INBOX folder we can begin to retrieve emails.
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-- Retrieve the SUBJECT of the first/newest email
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imap.fetch_header(imap_socket,imap.get_most_recent_num(),"SUBJECT")
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count = count + 1
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elseif (count == 2) then
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subject = imap.get_header() -- store the SUBJECT response in subject
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-- Retrieve the FROM of the first/newest email
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imap.fetch_header(imap_socket,imap.get_most_recent_num(),"FROM")
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count = count + 1
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elseif (count == 3) then
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from = imap.get_header() -- store the FROM response in from
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-- Retrieve the BODY of the first/newest email
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imap.fetch_body_plain_text(imap_socket,imap.get_most_recent_num())
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count = count + 1
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elseif (count == 4) then
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body = imap.get_body() -- store the BODY response in body
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imap.logout(imap_socket) -- Logout of the email account
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count = count + 1
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else
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-- display the email contents
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-- create patterns to strip away IMAP protocol text from actual message
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local pattern1 = "%*.*}\n" -- to remove "* n command (BODY[n] {n}"
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local pattern2 = "%)\n.+" -- to remove ") t1 OK command completed"
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from = string.gsub(from,pattern1,"")
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from = string.gsub(from,pattern2,"")
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print(from)
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subject = string.gsub(subject,pattern1,"")
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subject = string.gsub(subject,pattern2,"")
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print(subject)
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body = string.gsub(body,pattern1,"")
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body = string.gsub(body,pattern2,"")
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print("Message: " .. body)
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timer:stop() -- Stop the timer alarm
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imap_socket:close() -- close the IMAP socket
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collectgarbage() -- clean up
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end
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end
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end
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do
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-- configure the ESP8266 as a station
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wifi.setmode(wifi.STATION)
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wifi.sta.config(SSID,SSID_PASSWORD)
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wifi.sta.autoconnect(1)
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-- create an unencrypted connection
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imap_socket = net.createConnection(net.TCP,0)
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imap_socket:on("connection",setup) -- call setup() upon connection
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imap_socket:connect(IMAP_PORT,IMAP_SERVER) -- connect to the IMAP server
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-- A timer alarm is sued to check if an IMAP reply has been processed
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timer = tmr.create()
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timer:alarm(1000, tmr.ALARM_AUTO, do_next)
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end
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