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#!/usr/bin/env python2
# Copyright 2011 Google Inc. All Rights Reserved.
"""Utilities to send email either through SMTP or SendGMR."""
from __future__ import print_function
from email import encoders as Encoders
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import getpass
import os
import smtplib
import tempfile
from cros_utils import command_executer
class EmailSender(object):
"""Utility class to send email through SMTP or SendGMR."""
class Attachment(object):
"""Small class to keep track of attachment info."""
def __init__(self, name, content):
self.name = name
self.content = content
def SendEmail(self,
email_to,
subject,
text_to_send,
email_cc=None,
email_bcc=None,
email_from=None,
msg_type='plain',
attachments=None):
"""Choose appropriate email method and call it."""
if os.path.exists('/usr/bin/sendgmr'):
self.SendGMREmail(email_to, subject, text_to_send, email_cc, email_bcc,
email_from, msg_type, attachments)
else:
self.SendSMTPEmail(email_to, subject, text_to_send, email_cc, email_bcc,
email_from, msg_type, attachments)
def SendSMTPEmail(self, email_to, subject, text_to_send, email_cc, email_bcc,
email_from, msg_type, attachments):
"""Send email via standard smtp mail."""
# Email summary to the current user.
msg = MIMEMultipart()
if not email_from:
email_from = os.path.basename(__file__)
msg['To'] = ','.join(email_to)
msg['Subject'] = subject
if email_from:
msg['From'] = email_from
if email_cc:
msg['CC'] = ','.join(email_cc)
email_to += email_cc
if email_bcc:
msg['BCC'] = ','.join(email_bcc)
email_to += email_bcc
msg.attach(MIMEText(text_to_send, msg_type))
if attachments:
for attachment in attachments:
part = MIMEBase('application', 'octet-stream')
part.set_payload(attachment.content)
Encoders.encode_base64(part)
part.add_header('Content-Disposition',
"attachment; filename=\"%s\"" % attachment.name)
msg.attach(part)
# Send the message via our own SMTP server, but don't include the
# envelope header.
s = smtplib.SMTP('localhost')
s.sendmail(email_from, email_to, msg.as_string())
s.quit()
def SendGMREmail(self, email_to, subject, text_to_send, email_cc, email_bcc,
email_from, msg_type, attachments):
"""Send email via sendgmr program."""
ce = command_executer.GetCommandExecuter(log_level='none')
if not email_from:
email_from = getpass.getuser() + '@google.com'
to_list = ','.join(email_to)
if not text_to_send:
text_to_send = 'Empty message body.'
body_fd, body_filename = tempfile.mkstemp()
to_be_deleted = [body_filename]
try:
os.write(body_fd, text_to_send)
os.close(body_fd)
# Fix single-quotes inside the subject. In bash, to escape a single quote
# (e.g 'don't') you need to replace it with '\'' (e.g. 'don'\''t'). To
# make Python read the backslash as a backslash rather than an escape
# character, you need to double it. So...
subject = subject.replace("'", "'\\''")
if msg_type == 'html':
command = ("sendgmr --to='%s' --from='%s' --subject='%s' "
"--html_file='%s' --body_file=/dev/null" %
(to_list, email_from, subject, body_filename))
else:
command = (
"sendgmr --to='%s' --from='%s' --subject='%s' "
"--body_file='%s'" % (to_list, email_from, subject, body_filename))
if email_cc:
cc_list = ','.join(email_cc)
command += " --cc='%s'" % cc_list
if email_bcc:
bcc_list = ','.join(email_bcc)
command += " --bcc='%s'" % bcc_list
if attachments:
attachment_files = []
for attachment in attachments:
if '<html>' in attachment.content:
report_suffix = '_report.html'
else:
report_suffix = '_report.txt'
fd, fname = tempfile.mkstemp(suffix=report_suffix)
os.write(fd, attachment.content)
os.close(fd)
attachment_files.append(fname)
files = ','.join(attachment_files)
command += " --attachment_files='%s'" % files
to_be_deleted += attachment_files
# Send the message via our own GMR server.
status = ce.RunCommand(command)
return status
finally:
for f in to_be_deleted:
os.remove(f)
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