Send e-mail with attachment in Lua

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I’m trying to send an e-mail behind the socket. I can send an email with an attachment, but I also want to add text to the email and I can’t. Example of the code:

local smtp = require("socket.smtp")
local mime = require("mime")
local ltn12 = require("ltn12")
rcpt = {
    "[email protected]"
    }

mesgt = {
  headers = {
    ["content-type"] = 'text/html; charset="ISO-8859-1"',
    ["content-transfer-encoding"] = 'quoted-printable',
    to = "exepmo <"[email protected]">",
    ["content-type"] = 'image/png; name="image.png"',
    ["content-disposition"] = 'attachment; filename="image.png"',
    ["content-description"] = 'a beautiful image',
    ["content-transfer-encoding"] = "BASE64"
    subject = sujet
  },

   body = "texto texto texto",
      [1] = { 

      body = ltn12.source.chain(
            ltn12.source.file(io.open("image.png", "rb")),
            ltn12.filter.chain(
                mime.encode("base64"),
                mime.wrap()
            )
        )

        }
      }
   r, e = smtp.send{
      from = from,
      rcpt = rcpt, 
      source = smtp.message(mesgt),
      port = 21,    
      server = servidordemail
  }

The code works if you send either the text or the attachment. If you want to send both does not work for me.

lua emailing

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1 answer

2

To documentation which you used in the previous question shows how you should do but you are doing it in a different way. Relevant part:

  headers = {
     -- Remember that headers are *ignored* by smtp.send. 
     from = "Sicrano de Oliveira <[email protected]>",
     to = "Fulano da Silva <[email protected]>",
     subject = "Here is a message with attachments"
  },
  body = {
    preamble = "If your client doesn't understand attachments, \r\n" ..
               "it will still display the preamble and the epilogue.\r\n" ..
               "Preamble will probably appear even in a MIME enabled client.",
    -- first part: no headers means plain text, us-ascii.
    -- The mime.eol low-level filter normalizes end-of-line markers.
    [1] = { 
      body = mime.eol(0, [[
        Lines in a message body should always end with CRLF. 
        The smtp module will *NOT* perform translation. However, the 
        send function *DOES* perform SMTP stuffing, whereas the message
        function does *NOT*.
      ]])
    },
    -- second part: headers describe content to be a png image, 
    -- sent under the base64 transfer content encoding.
    -- notice that nothing happens until the message is actually sent. 
    -- small chunks are loaded into memory right before transmission and 
    -- translation happens on the fly.
    [2] = { 
      headers = {
        ["content-type"] = 'image/png; name="image.png"',
        ["content-disposition"] = 'attachment; filename="image.png"',
        ["content-description"] = 'a beautiful image',
        ["content-transfer-encoding"] = "BASE64"
      },
      body = ltn12.source.chain(
        ltn12.source.file(io.open("image.png", "rb")),
        ltn12.filter.chain(
          mime.encode("base64"),
          mime.wrap()
        )
      )
    },
    epilogue = "This might also show up, but after the attachments"
  }

I put in the Github for future reference.

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