#!/usr/bin/env python3
"""
optparse is deprecated in favor of argparse as of Python 2.7. However,
since 2.7 is not always present on many systems, at this writing,
it is safer to stick with optparse for now. It should be easy
to change later, since the syntax is very similar between argparse and optparse.
from optparse import OptionParser
"""
from optparse import OptionParser
import datetime
import getpass
import os
import re
import stat
import subprocess
import sys
import time
'''
bl_email.py - Send an email message
Synopsis: bl_email.py [--sendeer string] --recipient string --subject string [--message filename]
Message file can contain HTML or text, but will be sent as an HTML message.
@modified: December 5, 2021
@author: Brian Fristensky
@contact: Brian.Fristensky@umanitoba.ca
'''
#blib = os.environ.get("BIRCHPYLIB")
#sys.path.append(blib)
#from birchlib import Birchmod
PROGRAM = "bl_email.py : "
USAGE = "\n\tUSAGE: bl_email.py [--sender string] --recipient string --subject string [--message filename]"
DEBUG = True
if DEBUG :
print('bl_email.py: Debugging mode on')
#BM = Birchmod(PROGRAM, USAGE)
# - - - - - - - - - - - - - Utility classes - - - - - - - - - - - - - - - - -
def LocalHostname():
"""
Return the name of the local machine. Tries a number of methods
to get a name other than 'localhost' or a null result.
"""
import socket
import platform
def CheckName(name) :
if name == None or name.startswith("localhost") or name == "" :
OKAY = False
else :
OKAY = True
return OKAY
name = os.getenv('HOSTNAME')
if not CheckName(name) :
name = platform.uname()[1]
if not CheckName(name) :
if socket.gethostname().find('.')>=0:
name=socket.gethostname()
else:
name=socket.gethostbyaddr(socket.gethostname())[0]
return name
def SendEmail(From,To,Subject,Text) :
"""
Very simple email method adapted from:
http://stackoverflow.com/questions/882712/sending-html-email-using-python
There are more elaborate examples on this site for sending
HTML messages and attachments.
"""
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
Host = 'localhost'
msg = MIMEMultipart('alternative')
msg['Subject'] = Subject
Html = """\
%s
""" %(Text)
part1 = MIMEText(Text, 'plain')
part2 = MIMEText(Html, 'html')
msg.attach(part1)
msg.attach(part2)
try:
server = smtplib.SMTP(Host)
server.sendmail(From, To, msg.as_string())
server.quit()
print("Successfully sent email")
except :
print("Error: unable to send email")
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
class Parameters:
"""
Wrapper class for command line parameters
"""
def __init__(self):
"""
Initializes arguments:
SENDER = ""
SUBJECT = ""
MESSAGE = ""
RECIPIENT = ""
Then calls read_args() to fill in their values from command line
"""
self.SENDER = ""
self.SUBJECT = ""
self.MESSAGE = ""
self.RECIPIENT = ""
self.read_args()
if DEBUG :
print('------------ Parameters from command line ------')
print(' SENDER: ' + self.SENDER)
print(' SUBJECT: ' + self.SUBJECT)
print(' MESSAGE: ' + self.MESSAGE)
print(' RECIPIENT: ' + self.RECIPIENT)
print()
def read_args(self):
"""
Read command line arguments into a Parameter object
"""
parser = OptionParser()
parser.add_option("--sender", dest="sender", action="store", default="",
help="filename for message body (optional)")
parser.add_option("--subject", dest="subject", action="store", default="",
help="subject for email")
parser.add_option("--recipient", dest="recipient", action="store", default="",
help="address of recipient")
parser.add_option("--message", dest="message", action="store", default="",
help="filename for message body (optional)")
(options, args) = parser.parse_args()
self.SENDER = options.sender
self.SUBJECT = options.subject
self.MESSAGE = options.message
self.RECIPIENT = options.recipient
#======================== MAIN PROCEDURE ==========================
def main():
"""
Called when not in documentation mode.
"""
# Read parameters from command line
P = Parameters()
# Notify user when job is done, if email address was
# supplied using recipient
if P.RECIPIENT != "" :
if P.SENDER == "" :
Sender = getpass.getuser() + '@' + LocalHostname()
else :
Sender = P.SENDER
Subject = P.SUBJECT
Message = ""
if P.MESSAGE != "" :
if os.path.isfile(P.MESSAGE) :
MFILE = open(P.MESSAGE,'r')
for line in MFILE.readlines() :
Message = Message + line + '
'
MFILE.close()
SendEmail(Sender,[P.RECIPIENT],P.SUBJECT,Message)
if __name__ == "__main__":
main()
#else:
#used to generate documentation
# import doctest
# doctest.testmod()
#if (BM.documentor() or "-test" in sys.argv):
# pass
#else:
# main()