On 2018-02-13 22:54, Maroso Marco wrote:
Il giorno martedì 13 febbraio 2018 21:18:37 UTC+1, Chris Angelico ha scritto:
On Wed, Feb 14, 2018 at 7:05 AM, Maroso Marco <androidmar...@gmail.com> wrote:
> Hi,
> what i'm trying to do is develop my own email client, but a simple one.
> I just want it to connect to a specific email account and read the subject 
line of messages coming from a certain email address.
> I then want it to be able to execute the command i wrote on the subject.

Be aware that "from" addresses can easily be forged. I suggest
whitelisting a set of valid commands and executing only those. If you
want a REAL way to manage your home system remotely, I would recommend
SSH instead.

> It would be nice if i could specify two parameters on the subject line
> first : password;
> second : command;
> The first parameter is the password and the second is the command to be 
executed in the local pc where this program is running.

That's an improvement, but since the password is being transmitted in
clear text, it won't prevent attacks. It does mean you won't try to
execute the subject lines of random spam, though, so accidents will be
reduced (or eliminated).

> The program will have to show only email coming from a specific account
> and if the mail is unread then it should read the subject line and find 
> The first parameter must match my hardcoded password, and the second 
parameter must be executed on the local pc (example ... c:\windows\notepad.exe)
> It must check for new emails at a given timing (example ...every 30 seconds )
>  (the timing can be hardcoded or specified in a separate file)
> This is it.
> Any suggestions?

Seems perfectly possible.

> I have started doing this (but i never programmed in python before):
> import imaplib
> import os
> import email
> import email.header
> plusmail = "emailaddresstobechec...@gmail.com"
> googlepass = "mypassword"
> owner = "validsen...@gmail.com"
> M = imaplib.IMAP4_SSL('imap.gmail.com')
> M.login(plusmail, googlepass)
> M.select()
> status, response = M.search(None, '(UNSEEN)')
> unread_msg_nums = response[0].split()
> # Print the count of all unread messages
> print (len(unread_msg_nums))
> # Print all unread messages from a certain sender of interest
> status, response = M.search(None, '(UNSEEN)', '(FROM "%s")' % (owner))
> unread_msg_nums = response[0].split()
> da = []
> for e_id in unread_msg_nums:
>     _, response = imap.fetch(e_id, '(BODY.PEEK[HEADER.FIELDS (From Subject)] 
>     da.append(response[0][1])
> # print (da)
> # Mark them as seen
> for e_id in unread_msg_nums:
>     imap.store(e_id, '+FLAGS', '\Seen')
> typ, data = M.search(None, 'From',(owner))
> for num in data[0].split():
>     typ, data = M.fetch(num, '(RFC822)')
>     print ('Message %s\n%s\n' % (num, data[0][1]))
> M.close()
> M.logout()
> I know there are duplicates but i need to figure out how to build this 

Seems like a reasonable start. So what's the code doing wrong, or
failing to do? Is it failing with an exception? Is it running
successfully, but not doing something you want it to do?


Hi Chris and thanks for replying.

I came up with the following code (thanks for the security suggestions-i'm just 
testing) :

My code actually works fine allthough i have a couple of problems :

1 - once parced the messages and executed the command in the subject line, it 
keeps looping even if i told to only execute on unread messages
2 - it loops continuosly instead of waiting the correct wait time
3 - i had to add a delete statement so that the program stops looping at least 
on processing the commands.

Can you help me sort out the issue? Maybe it's an indent problem!

Here is the code :

import imaplib
import os
import email
import email.header
import time

def mailcontroller():
# Set user, pass and allowed mail for giving commands
     plusmail = "emailaddresstobechec...@gmail.com"
     googlepass = "thesecretpassword"
     captain = "theallowedemailaddr...@gmail.com"

     # Set vars for IMAP access
     M = imaplib.IMAP4_SSL('imap.gmail.com')
     M.login(plusmail, googlepass)

     # Set search on UNSEEN messages
     status, response = M.search(None, '(UNSEEN)')
     unread_msg_nums = response[0].split()

     # Mark as read
     for e_id in unread_msg_nums:
         M.store(e_id, '+FLAGS', '\Seen')

Here you iterate through all of the messages:

     # cycle messages sent from autorized email address
     typ, data = M.search(None, 'From',(captain))
     for num in data[0].split():
         typ, data = M.fetch(num, '(RFC822)')
         msg = email.message_from_string(data[0][1])
         decode = email.header.decode_header(msg['Subject'])[0]
         subject = unicode(decode[0])
         comando = subject

These lines are indented the same as the 'for' loop above, so they'll executed only the last message. If there are no messages, 'subject' won't be defined.

     if googlepass in subject:
         print 'Message %s: %s' % (num, subject)
# Split subject line
         googlepass,comando = subject.split(";")
         # Print command
         print comando
         # Execute command

         M.store(num, '+FLAGS', '\\Deleted')

There's no need to use 'expunge' here because those messages that are marked for deletion will be expunged anyway when the mailbox is closed:

Why not just "else:" here?

     elif googlepass not in subject:
         print "Nope"


Actually, the sequence should be more like:

    for each message:
        execute if necessary
    close and logout


while True:

It should really be sleeping between calls.

THanks in advance  :-)


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