126 lines
4.6 KiB
Lua
126 lines
4.6 KiB
Lua
---
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-- Working Example: https://www.youtube.com/watch?v=CcRbFIJ8aeU
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-- @description a basic SMTP email example. You must use an account which can
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-- provide unencrypted authenticated access.
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-- This example was tested with an AOL and Time Warner email accounts.
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-- GMail does not offer unencrypted authenticated access.
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-- To obtain your email's SMTP server and port simply Google it e.g. [my email domain] SMTP settings
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-- For example for timewarner you'll get to this page
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-- http://www.timewarnercable.com/en/support/faqs/faqs-internet/e-mailacco/incoming-outgoing-server-addresses.html
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-- To Learn more about SMTP email visit:
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-- SMTP Commands Reference - http://www.samlogic.net/articles/smtp-commands-reference.htm
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-- See "SMTP transport example" in this page http://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol
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-- @author Miguel
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-- The email and password from the account you want to send emails from
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local MY_EMAIL = "esp8266@domain.com"
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local EMAIL_PASSWORD = "123456"
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-- The SMTP server and port of your email provider.
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-- If you don't know it google [my email provider] SMTP settings
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local SMTP_SERVER = "smtp.server.com"
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local SMTP_PORT = "587"
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-- The account you want to send email to
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local mail_to = "to_email@domain.com"
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-- Your access point's SSID and password
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local SSID = "ssid"
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local SSID_PASSWORD = "password"
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-- configure ESP 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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-- These are global variables. Don't change their values
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-- they will be changed in the functions below
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local email_subject = ""
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local email_body = ""
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local count = 0
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local timer
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local smtp_socket = nil -- will be used as socket to email server
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-- The display() function will be used to print the SMTP server's response
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local function display(sck, response) -- luacheck: no unused
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print(response)
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end
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-- The do_next() function is used to send the SMTP commands to the SMTP server in the required sequence.
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-- I was going to use socket callbacks but the code would not run callbacks after the first 3.
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local function do_next()
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if(count == 0)then
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count = count+1
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local IP_ADDRESS = wifi.sta.getip()
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smtp_socket:send("HELO "..IP_ADDRESS.."\r\n")
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elseif(count==1) then
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count = count+1
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smtp_socket:send("AUTH LOGIN\r\n")
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elseif(count == 2) then
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count = count + 1
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smtp_socket:send(encoder.toBase64(MY_EMAIL).."\r\n")
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elseif(count == 3) then
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count = count + 1
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smtp_socket:send(encoder.toBase64(EMAIL_PASSWORD).."\r\n")
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elseif(count==4) then
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count = count+1
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smtp_socket:send("MAIL FROM:<" .. MY_EMAIL .. ">\r\n")
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elseif(count==5) then
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count = count+1
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smtp_socket:send("RCPT TO:<" .. mail_to ..">\r\n")
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elseif(count==6) then
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count = count+1
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smtp_socket:send("DATA\r\n")
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elseif(count==7) then
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count = count+1
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local message = string.gsub(
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"From: \"".. MY_EMAIL .."\"<"..MY_EMAIL..">\r\n" ..
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"To: \"".. mail_to .. "\"<".. mail_to..">\r\n"..
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"Subject: ".. email_subject .. "\r\n\r\n" ..
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email_body,"\r\n.\r\n","")
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smtp_socket:send(message.."\r\n.\r\n")
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elseif(count==8) then
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count = count+1
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timer:stop()
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smtp_socket:send("QUIT\r\n")
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else
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smtp_socket:close()
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end
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end
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-- The connected() function is executed when the SMTP socket is connected to the SMTP server.
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-- This function will create a timer to call the do_next function which will send the SMTP commands
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-- in sequence, one by one, every 5000 seconds.
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-- You can change the time to be smaller if that works for you, I used 5000ms just because.
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local function connected()
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timer = tmr.create()
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timer:alarm(5000, tmr.ALARM_AUTO, do_next)
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end
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-- @name send_email
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-- @description Will initiated a socket connection to the SMTP server and trigger the connected() function
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-- @param subject The email's subject
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-- @param body The email's body
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local function send_email(subject,body)
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count = 0
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email_subject = subject
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email_body = body
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smtp_socket = net.createConnection(net.TCP,0)
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smtp_socket:on("connection",connected)
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smtp_socket:on("receive",display)
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smtp_socket:connect(SMTP_PORT,SMTP_SERVER)
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end
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do
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-- Send an email
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send_email(
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"ESP8266",
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[[Hi,
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How are your IoT projects coming along?
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Best Wishes,
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ESP8266]]
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)
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end
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