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aprsd/aprsd.py
craigerl fcef0195b0 de-localize
2018-06-13 08:58:56 -07:00

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Python
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#!/usr/bin/python -u
#
# Listen on amateur radio aprs-is network for messages and respond to them.
# You must have an amateur radio callsign to use this software. Put your
# callsign in the "USER" variable and update your aprs-is password in "PASS".
# You must also have an imap email account available for polling.
#
# There are additional parameters in the code (sorry), so be sure to set your
# email server, and associated logins, passwords. search for "yourmaildomain",
# "password". Search for "shortcuts" to setup email aliases as well.
#
#
#
# APRS messages:
# t(ime) = respond with the current time
# f(ortune) = respond with a short fortune
# -email_addr email text = send an email
# -2 = display the last 2 emails received
# anything else = respond with usage
#
# Meanwhile this code will monitor an imap mailbox and forward email
# to your BASECALLSIGN.
#
# (C)2018 Craig Lamparter
# License GPLv2
#
from fuzzyclock import fuzzy
import sys
import os
import telnetlib
import time
import re
from random import randint
import smtplib
from email.mime.text import MIMEText
import subprocess
import datetime
import calendar
from imapclient import IMAPClient, SEEN
import email
import threading
import signal
# edit to taste, be advised there are additional parameters in the code for now
HOST = "noam.aprs2.net" # north america tier2 servers round robin
USER = "KM6XXX-9" # callsign of this aprs client with SSID
PASS = "22452" # google how to generate this
BASECALLSIGN = "KM6XXX" # callsign of radio in the field to which we send email
def signal_handler(signal, frame):
print("Ctrl+C, exiting.")
#sys.exit(0) # thread ignores this
os._exit(0)
signal.signal(signal.SIGINT, signal_handler)
def parse_email(msgid, data, server):
envelope = data[b'ENVELOPE']
#print('ID:%d "%s" (%s)' % (msgid, envelope.subject.decode(), envelope.date ))
f = re.search('([\.\w_-]+@[\.\w_-]+)', str(envelope.from_[0]) ) # email address match
if f is not None:
from_addr = f.group(1)
else:
from_addr = "noaddr"
m = server.fetch([msgid], ['RFC822'])
msg = email.message_from_string(m[msgid]['RFC822'])
if msg.is_multipart():
text = ""
html = None
for part in msg.get_payload():
if part.get_content_charset() is None:
# We cannot know the character set, so return decoded "something"
text = part.get_payload(decode=True)
continue
charset = part.get_content_charset()
if part.get_content_type() == 'text/plain':
text = unicode(part.get_payload(decode=True), str(charset), "ignore").encode('utf8', 'replace')
if part.get_content_type() == 'text/html':
html = unicode(part.get_payload(decode=True), str(charset), "ignore").encode('utf8', 'replace')
if text is not None:
body = text.strip() # strip removes white space fore and aft of string
else:
body = html.strip()
else:
text = unicode(msg.get_payload(decode=True), msg.get_content_charset(), 'ignore').encode('utf8', 'replace')
body = text.strip()
body = re.sub('<[^<]+?>', '', body) # strip all html tags
body = body.replace("\n", " ").replace("\r", " ") # strip CR/LF, make it one line, .rstrip fails at this
return(body, from_addr)
## end parse_email
def resend_email(count):
date = datetime.datetime.now()
month = date.strftime("%B")[:3] # Nov, Mar, Apr
day = date.day
year = date.year
today = str(day) + "-" + month + "-" + str(year)
shortcuts = {"jl" : "jlname@email.com", "cl" : "clname@email.com" }
shortcuts_inverted = dict([[v,k] for k,v in shortcuts.items()]) # swap key/value
server = IMAPClient('mail.yourmaildomain.org', use_uid=True)
server.login('KM6XXX@yourmaildomain.org', 'password')
select_info = server.select_folder('INBOX')
messages = server.search(['SINCE', today])
#print("%d messages received today" % len(messages))
msgexists = False
messages.sort(reverse=True)
del messages[int(count):] # only the latest "count" messages
for message in messages:
for msgid, data in list(server.fetch(message, ['ENVELOPE']).items()): # one at a time, otherwise order is random
(body, from_addr) = parse_email(msgid, data, server)
server.remove_flags(msgid, [SEEN]) # unset seen flag, will stay bold in email client
if from_addr in shortcuts_inverted: # reverse lookup of a shortcut
from_addr = shortcuts_inverted[from_addr]
reply = "-" + from_addr + " * " + body # asterisk indicates a resend
send_message(fromcall, reply)
msgexists = True
if msgexists is not True:
reply = "No new msg"
send_message(fromcall, reply)
server.logout()
### end resend_email()
def check_email_thread():
# print "Email thread disabled."
# return
threading.Timer(55, check_email_thread).start() # how do we skip first run?
shortcuts = {"jl" : "jlname@email.com", "cl" : "clname@email.com" }
shortcuts_inverted = dict([[v,k] for k,v in shortcuts.items()]) # swap key/value
date = datetime.datetime.now()
month = date.strftime("%B")[:3] # Nov, Mar, Apr
day = date.day
year = date.year
today = str(day) + "-" + month + "-" + str(year)
server = IMAPClient('mail.yourmaildomain.org', use_uid=True)
server.login('KM6XXX@yourmaildomain.org', 'password')
select_info = server.select_folder('INBOX')
messages = server.search(['SINCE', today])
#print("%d messages received today" % len(messages))
for msgid, data in server.fetch(messages, ['ENVELOPE']).items():
envelope = data[b'ENVELOPE']
#print('ID:%d "%s" (%s)' % (msgid, envelope.subject.decode(), envelope.date ))
f = re.search('([[A-a][0-9]_-]+@[[A-a][0-9]_-\.]+)', str(envelope.from_[0]) )
if f is not None:
from_addr = f.group(1)
else:
from_addr = "noaddr"
if "APRS" not in server.get_flags(msgid)[msgid]: #if msg not flagged as sent via aprs
m = server.fetch([msgid], ['RFC822'])
(body, from_addr) = parse_email(msgid, data, server)
server.remove_flags(msgid, [SEEN]) # unset seen flag, will stay bold in email client
if from_addr in shortcuts_inverted: # reverse lookup of a shortcut
from_addr = shortcuts_inverted[from_addr]
reply = "-" + from_addr + " " + body
#print "Sending message via aprs: " + reply
send_message(BASECALLSIGN, reply) #radio
server.add_flags(msgid, ['APRS']) #flag message as sent via aprs
server.remove_flags(msgid, [SEEN]) #unset seen flag, will stay bold in email client
server.logout()
### end check_email()
def send_ack(tocall, ack):
tocall = tocall.ljust(9) # pad to nine chars
line = USER + ">APRS::" + tocall + ":ack" + str(ack) + "\n"
print "Sending ack __________________"
print "Raw : " + line,
print "To : " + tocall
print "Ack number : " + str(ack)
tn.write(line)
### end send_ack()
def send_message(tocall, message):
messagecounter = randint(10,99)
tocall = tocall.ljust(9) # pad to nine chars
message = message[:67] # yaesu max length allowed, plus 3 for msg number {00 ?
line = USER + ">APRS::" + tocall + ":" + message + "{" + str(messagecounter) + "\n"
print "Sending message_______________"
print "Raw : " + line,
print "To : " + tocall
print "Message : " + message
tn.write(line) # resends within 8 minutes are tossed
### end send_message()
def process_message(line):
f = re.search('^(.*)>', line)
fromcall = f.group(1)
searchstring = '::' + USER + '[ ]*:(.*)' # verify this, callsign is padded out with spaces to colon
m = re.search(searchstring, line)
fullmessage = m.group(1)
ack_attached = re.search('(.*){([0-9]+)', fullmessage)
if ack_attached: # "{##" suffix means radio wants an ack back
message = ack_attached.group(1) # message content
ack_num = ack_attached.group(2) # suffix number to use in ack
else:
message = fullmessage
ack_num = 0 # ack not requested, but lets send one as 0
print "Received message______________"
print "Raw : " + line
print "From : " + fromcall
print "Message : " + message
print "Msg number : " + str(ack_num)
return (fromcall, message, ack_num)
### end process_message()
def send_email(to_addr, content):
print "Sending Email_________________"
shortcuts = {"jl" : "jlname@email.com", "cl" : "clname@email.com" }
if to_addr in shortcuts:
print "To : " + to_addr ,
to_addr = shortcuts[to_addr]
print " (" + to_addr + ")"
subject = BASECALLSIGN
#content = content + "\n\n(NOTE: reply with one line)"
print "Subject : " + subject
print "Body : " + content
msg = MIMEText(content)
msg['Subject'] = subject
msg['From'] = "KM6XXX@yourmaildomain.org"
msg['To'] = to_addr
s = smtplib.SMTP_SSL('mail.yourmaildomain.org', 465)
s.login("KM6XXX@yourmaildomain.org", "password")
try:
s.sendmail("KM6XXX@yourmaildomain.org", [to_addr], msg.as_string())
except Exception, e:
print "Sendmail Error!!!!!!!!!"
s.quit()
return(-1)
s.quit()
return(0)
### main()
try:
tn = telnetlib.Telnet(HOST, 14580)
except Exception, e:
print "Telnet session failed.\n"
sys.exit(-1)
time.sleep(2)
tn.write("user " + USER + " pass " + PASS + " vers aprsd 0.99\n" )
time.sleep(2)
check_email_thread() # start email reader thread
while True:
line = ""
try:
for char in tn.read_until("\n",100):
line = line + char
line = line.replace('\n', '')
print line
searchstring = '::' + USER
if re.search(searchstring, line): # is aprs message to us, not beacon, status, etc
(fromcall, message, ack) = process_message(line)
else:
message = "noise"
continue
# ACK (ack##) # ignore incoming acks
if re.search('^ack[0-9]+', message):
is_ack = True
continue
# EMAIL (-)
elif re.search('^-.*', message): # is email command
searchstring = '^' + BASECALLSIGN + '.*'
if re.search(searchstring, fromcall): # only I can do email
r = re.search('^-([0-9])[0-9]*$', message) # digits only, first one is number of emails to resend
if r is not None:
resend_email(r.group(1))
elif re.search('^-([A-Za-z0-9_\-\.@]+) (.*)', message): # -user@address.com body of email
a = re.search('^-([A-Za-z0-9_\-\.@]+) (.*)', message) # (same search again)
if a is not None:
to_addr = a.group(1)
content = a.group(2)
if content == 'mapme': # send recipient link to aprs.fi map
content = "Click for my location: http://aprs.fi/" + USER + "/"
send_result = send_email(to_addr, content)
if send_result != 0:
send_message(fromcall, "-" + to_addr + " failed")
else:
send_message(fromcall, "-" + to_addr + " sent")
else:
send_message(fromcall, "Bad email address")
# TIME (t)
elif re.search('^t', message):
stm = time.localtime()
h = stm.tm_hour
m = stm.tm_min
cur_time = fuzzy(h, m, 1)
reply = cur_time + " (" + str(h) + ":" + str(m).rjust(2, '0') + "PDT)" + " (" + message.rstrip() + ")"
send_message(fromcall, reply)
# FORTUNE (f)
elif re.search('^f', message):
process = subprocess.Popen(['/usr/games/fortune', '-s', '-n 60'], stdout=subprocess.PIPE)
reply = process.communicate()[0]
send_message(fromcall, reply.rstrip())
# USAGE
else:
reply = "APRSd v0.99. Commands: t(ime), f(ortune), -(emailaddr emailbody)"
send_message(fromcall, reply)
send_ack(fromcall, ack) # send an ack last
except Exception, e:
print "Error in mainline loop:"
print "%s" % str(e)
print "Exiting."
#sys.exit(1) # merely a suggestion
os._exit(1)
# end while True
tn.close()
exit()
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