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gjniewenhuijse · 26.10.2017, 08:52

Hello,

I have a script that sends an email with attached foscam camera snaphots when my doorbell is pushed.

That works great for months, but after some time it crashed my lm4 as following:
- when my doorbell is pushed i receive an email with size 0 images. every doorbell push i receive that mail with size 0 image
- so i try to find the problem and test my code manual with a resident script (sleepinterval 60), the same code as my event-based script

Code:
require('user.nit_email')
mail({'test@test.nl'}, 'Test', 'Test message.', 'std_camera_2')

-I receive every 60 seconds an email, thats correct. But when i stop/deactivate this script i also receive every 60 seconds the email, why?
-So i need to restart my lm4 to solve this issue.

Nit_email

Code:
local from_name = 'HomeLynk'

local settings = {
    -- "from" field, only e-mail must be specified here
    from = 'test@test.nl',
    -- smtp username
    --user = '',
    -- smtp password
    --password = '',
    -- smtp server
    server = '1.2.3.4',
    -- smtp server port
    port = 25,
    -- enable ssl, required for gmail smtp
    --secure = 'sslv23',
  }

local escape = function(v)
  return '<' .. tostring(v) .. '>'
end

-- send an e-mail, 
function mail(to, subject, message, att)
  -- make sure these settings are correct
  local smtp = require('socket.smtp')
  if att then
    local mime = require('mime')
        local ltn12 = require('ltn12')
    -- generate attachements
    bodyAtt = handleAtt(att, 'start')
  else
    bodyAtt = {"",""}
  end
  
  if type(to) ~= 'table' then
    to = { to }
  end
  
  for index, email in ipairs(to) do
    to[ index ] = escape(email)
  end
    
  settings.source = smtp.message({
    headers = {
      from = from_name..escape(settings.from),
      to = table.concat(to, ', '),
      subject = subject,
    },
    body = {
        --preamble = "Hello Recipient, \r\n" .. "This is your e-mail with a picture attached.",
        {
          header = {
            ['Content-type'] = 'text/html; charset=utf-8',
          },
          body = mime.eol(0, message),
        },
        bodyAtt[1],bodyAtt[2], -- get attachements if exists (max 2 for now)  <---todo:make it dynamic
        --epilogue = "That's it folks! :)"
    }
  })
  bodyAtt = nil
   
  -- fixup from field
  settings.from = escape(settings.from)
  settings.rcpt = to

  smtp.send(settings)
  if att then
    handleAtt(att, 'end')
  end
end

-- std_camera: snapshot camera voordeur
-- std_camera_b: snapshot camera voordeur en achterdeur
function handleAtt(att, handle)
  if handle == "start" then
    if att == "std_camera" then
      require('user.nit_camera')
      dst = '/tmp/capture.jpg'
      local url = string.format(url_cmdFoscam, cam_voordeur, cam_port, 'snapPicture2', '', cam_usr2, cam_pwd2)
            local cmd = string.format('wget -O %q %q', dst, url)
            os.execute(cmd)
      local attachment = ltn12.source.chain( ltn12.source.file(io.open(dst, 'r')), ltn12.filter.chain(mime.encode('base64'), mime.wrap()) )
      return
      {
        {
          headers = {
            ['Content-type'] = 'image/jpeg; name="image.jpg"',
            ['Content-disposition'] = 'attachment; filename="image.jpg"',
            ['Content-transfer-encoding'] = 'BASE64',
          },
          body = attachment
        }
            }
    
    elseif att == "std_camera_b" then
      require('user.nit_camera')
      dst1 = '/tmp/capture1.jpg'
      dst2 = '/tmp/capture2.jpg'
      local url1 = string.format(url_cmdFoscam, cam_voordeur, cam_port, 'snapPicture2', '', cam_usr2, cam_pwd2)
      local url2 = string.format(url_cmdFoscam, cam_achterdeur, cam_port, 'snapPicture2', '', cam_usr2, cam_pwd2)
            local cmd1 = string.format('wget -O %q %q', dst1, url1)
            local cmd2 = string.format('wget -O %q %q', dst2, url2)
      os.execute(cmd1)
            os.execute(cmd2)
      local attachment1 = ltn12.source.chain( ltn12.source.file(io.open(dst1, 'r')), ltn12.filter.chain(mime.encode('base64'), mime.wrap()) )
      local attachment2 = ltn12.source.chain( ltn12.source.file(io.open(dst2, 'r')), ltn12.filter.chain(mime.encode('base64'), mime.wrap()) )
      return
      {
        {
          headers = {
            ['Content-type'] = 'image/jpeg; name="image1.jpg"',
            ['Content-disposition'] = 'attachment; filename="image1.jpg"',
            ['Content-transfer-encoding'] = 'BASE64',
          },
          body = attachment1
        },
        {
          headers = {
            ['Content-type'] = 'image/jpeg; name="image2.jpg"',
            ['Content-disposition'] = 'attachment; filename="image2.jpg"',
            ['Content-transfer-encoding'] = 'BASE64',
          },
          body = attachment2
        }
      }
    
    elseif att == "std_camera_2" then
      require('user.nit_camera')
      dst1 = '/tmp/capture1.jpg'
      dst2 = '/tmp/capture2.jpg'
      local url1 = string.format(url_cmdFoscam, cam_voordeur, cam_port, 'snapPicture2', '', cam_usr2, cam_pwd2)
            local cmd1 = string.format('wget -O %q %q', dst1, url1)
            local cmd2 = string.format('wget -O %q %q', dst2, url1)
      os.execute(cmd1) -- direct snapshot
      cmdFoscam(cam_voordeur, cam_port, 'ptzGotoPresetPoint', '&name=Deur') -- move to frontdoor
            os.sleep(20) -- wait for 20 seconds
      os.execute(cmd2) -- new snapshot 
      local attachment1 = ltn12.source.chain( ltn12.source.file(io.open(dst1, 'r')), ltn12.filter.chain(mime.encode('base64'), mime.wrap()) )
      local attachment2 = ltn12.source.chain( ltn12.source.file(io.open(dst2, 'r')), ltn12.filter.chain(mime.encode('base64'), mime.wrap()) )
      return
      {
        {
          headers = {
            ['Content-type'] = 'image/jpeg; name="image1.jpg"',
            ['Content-disposition'] = 'attachment; filename="image1.jpg"',
            ['Content-transfer-encoding'] = 'BASE64',
          },
          body = attachment1
        },
        {
          headers = {
            ['Content-type'] = 'image/jpeg; name="image2.jpg"',
            ['Content-disposition'] = 'attachment; filename="image2.jpg"',
            ['Content-transfer-encoding'] = 'BASE64',
          },
          body = attachment2
        }
      }
    end
  
  elseif handle == "end" then
    if att == "std_camera" then
      os.remove(dst)
    elseif att == "std_camera_b" then
      os.remove(dst1)
      os.remove(dst2)
    elseif att == "std_camera_2" then
      os.remove(dst1)
      os.remove(dst2)
    end
  end
  
end

Nit_camera

Code:
-- snapshot urls
cam_voordeur = '2.2.2.2'
cam_achterdeur = '2.2.2.3'
cam_port = 80
cam_usr = 'user'
cam_pwd = 'password'
cam_usr2 = 'user2'
cam_pwd2 = 'password2'

-- start command urls
url_cmdFoscam = 'http://%s:%s/cgi-bin/CGIProxy.fcgi?cmd=%s%s&usr=%s&pwd=%s'

-- Foscam camera command
function cmdFoscam(iCamera, iPort, iCmd, iParam)
  local url, response
  url = string.format(url_cmdFoscam, iCamera, iPort, iCmd, iParam, cam_usr, cam_pwd)
       
  if (url) then
      require('socket.http')
    socket.http.TIMEOUT = 5
    response = socket.http.request( url_encode(url) )
  end
  return response
end

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