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#!/usr/bin/env python3
#
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Security Response Tool Implementation
#
# Copyright (C) 2017 Wind River Systems
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Theory of operation
#
# * Send an email via Python's smtplib
# * Support encryption and passwords
import os
import sys
import argparse
import smtplib
from email.mime.text import MIMEText
# Setup:
toaddrs = ''
fromaddr = ''
smtpserver = ''
smtpencryption = ''
srt_user = ''
srt_passwd = ''
subject = ''
msg = ''
verbose = False
test = False
srtErrorLog = 'srt_errors.txt'
#################################
# Send the email
#
def prompt(prompt):
return input(prompt).strip()
def enter_message():
global msg
print("Enter message, end with ^D (Unix) or ^Z (Windows):")
msg = ''
while True:
try:
line = input()
except EOFError:
break
if not line:
break
msg = msg + line
print("Message length is", len(msg))
def srt_error_log(msg):
f1=open(srtErrorLog, 'a')
f1.write("|" + msg + "|\n" )
f1.close()
#################################
# Send the email
#
def send_email():
global msg
# Add the headers at the start!
msg = MIMEText(msg)
msg['Subject'] = subject
msg['From'] = fromaddr
msg['To'] = ', '.join(toaddrs)
if test:
print("From:%s" % fromaddr)
print("To:%s" % toaddrs)
print("Subject:%s" % subject)
if 'tls' == smtpencryption:
print("TLS:yes")
if srt_user:
print("User:%s" % srt_user)
print("Message:")
print("----" % msg)
print("%s" % msg.as_string())
print("----" % msg)
else:
server = smtplib.SMTP(smtpserver)
if verbose:
server.set_debuglevel(1)
if 'tls' == smtpencryption:
server.starttls()
if srt_user:
server.login(srt_user, srt_passwd)
server.sendmail(fromaddr, toaddrs, msg.as_string())
server.quit()
#################################
# main loop
#
def main(argv):
global toaddrs
global fromaddr
global smtpserver
global smtpencryption
global srt_user
global srt_passwd
global subject
global msg
global verbose
global test
parser = argparse.ArgumentParser(description='srtool_email.py: SRTool email handler')
parser.add_argument('--from', dest='smtpfrom', help='From email address')
parser.add_argument('--to', dest='smtpto', help='To email address')
parser.add_argument('--subject', '-s', dest='subject', help='Subject for email address')
parser.add_argument('--server', dest='smtpserver', help='SMTP server address')
parser.add_argument('--user', dest='user', help='User name for Jira access')
parser.add_argument('--passwd', dest='passwd', help='User password for Jira access')
parser.add_argument('--tls', '-t', action='store_true', dest='tls', help='Use TLS encryption')
parser.add_argument('--message', '-m', dest='message', help='Message to send')
parser.add_argument('--file', '-f', dest='file', help='File to send')
parser.add_argument('--prompt', '-p', action='store_true', dest='prompt', help='Directly enter a message')
parser.add_argument('--verbose', '-v', action='store_true', dest='verbose', help='Verbose output from SMTP connection')
parser.add_argument('--test', action='store_true', dest='test', help='Test the email setup')
args = parser.parse_args()
# Resolve the arguments
if args.smtpto:
toaddrs = args.smtpto
toaddrs = toaddrs.split(',')
else:
print("ERROR: missing 'to' address", file=sys.stderr)
exit(1)
if args.subject:
subject = args.subject
else:
print("ERROR: missing 'subject'", file=sys.stderr)
exit(1)
verbose = args.verbose
test = args.test
# Authorization
if args.user:
srt_user = args.user
else:
srt_user = os.getenv('SRT_EMAIL_USER','')
if args.passwd:
srt_passwd = args.passwd
else:
srt_passwd = os.getenv('SRT_EMAIL_PASSWD','')
# Server settings
if args.smtpserver:
smtpserver = args.smtpserver
else:
smtpserver = os.getenv('SRT_EMAIL_SMTP','')
if args.smtpfrom:
fromaddr = args.smtpfrom
else:
fromaddr = os.getenv('SRT_EMAIL_FROM','')
if not smtpserver or not srt_user or not srt_passwd or not fromaddr:
msg = "FATAL ERROR: Missing SMTP('%s'), User('%s'), Password('%s'), and/or From('%s') for email access" % (smtpserver,srt_user,'*******' if srt_passwd else '',fromaddr)
print(msg, file=sys.stderr)
srt_error_log(msg)
exit(1)
# Encryption
if args.tls:
smtpencryption = 'tls'
else:
smtpencryption = ''
# Set up the message
if args.message:
msg = args.message
elif args.file:
fp = open(args.file, 'rb')
# Create a text/plain message
msg = fp.read()
fp.close()
elif args.prompt:
enter_message()
else:
print("ERROR: missing message source", file=sys.stderr)
exit(1)
# Debug
if verbose:
srt_error_log("EMAIL: SMTP('%s'), User('%s'), Password('%s'), From('%s'), args('%s')" % (smtpserver,srt_user,srt_passwd,fromaddr,str(args)))
# Send the email
send_email()
if __name__ == '__main__':
script_pathname=os.path.dirname(sys.argv[0])
main(sys.argv[1:])
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