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# Caolan McNamara caolanm@redhat.com
# a simple email mailmerge component

# manual installation for hackers, not necessary for users
# cp mailmerge.py /usr/lib/libreoffice/program
# cd /usr/lib/libreoffice/program
# ./unopkg add --shared mailmerge.py
# edit ~/.openoffice.org2/user/registry/data/org/openoffice/Office/Writer.xcu
# and change EMailSupported to as follows...
#  <prop oor:name="EMailSupported" oor:type="xs:boolean">
#   <value>true</value>
#  </prop>

from __future__ import print_function

import unohelper
import uno
import re
import os
import encodings.idna

#to implement com::sun::star::mail::XMailServiceProvider
#and
#to implement com.sun.star.mail.XMailMessage

from com.sun.star.mail import XMailServiceProvider
from com.sun.star.mail import XMailService
from com.sun.star.mail import XSmtpService
from com.sun.star.mail import XConnectionListener
from com.sun.star.mail import XAuthenticator
from com.sun.star.mail import XMailMessage
from com.sun.star.mail.MailServiceType import SMTP
from com.sun.star.mail.MailServiceType import POP3
from com.sun.star.mail.MailServiceType import IMAP
from com.sun.star.uno import XCurrentContext
from com.sun.star.lang import IllegalArgumentException
from com.sun.star.lang import EventObject
from com.sun.star.lang import XServiceInfo
from com.sun.star.mail import SendMailMessageFailedException

from email.mime.base import MIMEBase
from email.message import Message
from email.charset import Charset
from email.charset import QP
from email.encoders import encode_base64
from email.header import Header
from email.mime.multipart import MIMEMultipart
from email.utils import formatdate
from email.utils import parseaddr
from socket import _GLOBAL_DEFAULT_TIMEOUT

import sys, smtplib, imaplib, poplib
dbg = False

# pythonloader looks for a static g_ImplementationHelper variable
g_ImplementationHelper = unohelper.ImplementationHelper()
g_providerImplName = "org.openoffice.pyuno.MailServiceProvider"
g_messageImplName = "org.openoffice.pyuno.MailMessage"

#no stderr under windows, output to pymailmerge.log
#with no buffering
if dbg and os.name == 'nt':
	dbgout = open('pymailmerge.log', 'w', 0)
else:
	dbgout = sys.stderr

class PyMailSMTPService(unohelper.Base, XSmtpService):
	def __init__( self, ctx ):
		self.ctx = ctx
		self.listeners = []
		self.supportedtypes = ('Insecure', 'Ssl')
		self.server = None
		self.connectioncontext = None
		self.notify = EventObject(self)
		if dbg:
			print("PyMailSMTPService init", file=dbgout)
			print("python version is: " + sys.version, file=dbgout)
	def addConnectionListener(self, xListener):
		if dbg:
			print("PyMailSMTPService addConnectionListener", file=dbgout)
		self.listeners.append(xListener)
	def removeConnectionListener(self, xListener):
		if dbg:
			print("PyMailSMTPService removeConnectionListener", file=dbgout)
		self.listeners.remove(xListener)
	def getSupportedConnectionTypes(self):
		if dbg:
			print("PyMailSMTPService getSupportedConnectionTypes", file=dbgout)
		return self.supportedtypes
	def connect(self, xConnectionContext, xAuthenticator):
		self.connectioncontext = xConnectionContext
		if dbg:
			print("PyMailSMTPService connect", file=dbgout)
		server = xConnectionContext.getValueByName("ServerName").strip()
		if dbg:
			print("ServerName: " + server, file=dbgout)
		port = int(xConnectionContext.getValueByName("Port"))
		if dbg:
			print("Port: " + str(port), file=dbgout)
		tout = xConnectionContext.getValueByName("Timeout")
		if dbg:
			print(isinstance(tout,int), file=dbgout)
		if not isinstance(tout,int):
			tout = _GLOBAL_DEFAULT_TIMEOUT
		if dbg:
			print("Timeout: " + str(tout), file=dbgout)
		if port == 465:
			self.server = smtplib.SMTP_SSL(server, port,timeout=tout)
		else:
			self.server = smtplib.SMTP(server, port,timeout=tout)

		#stderr not available for us under windows, but
		#set_debuglevel outputs there, and so throw
		#an exception under windows on debugging mode
		#with this enabled
		if dbg and os.name != 'nt':
			self.server.set_debuglevel(1)

		connectiontype = xConnectionContext.getValueByName("ConnectionType")
		if dbg:
			print("ConnectionType: " + connectiontype, file=dbgout)
		if connectiontype.upper() == 'SSL' and port != 465:
			self.server.ehlo()
			self.server.starttls()
			self.server.ehlo()

		user = xAuthenticator.getUserName()
		password = xAuthenticator.getPassword()
		if user != '':
			if sys.version < '3': # fdo#59249 i#105669 Python 2 needs "ascii"
				user = user.encode('ascii')
				password = password.encode('ascii')
			if dbg:
				print("Logging in, username of: " + user, file=dbgout)
			self.server.login(user, password)

		for listener in self.listeners:
			listener.connected(self.notify)
	def disconnect(self):
		if dbg:
			print("PyMailSMTPService disconnect", file=dbgout)
		if self.server:
			self.server.quit()
			self.server = None
		for listener in self.listeners:
			listener.disconnected(self.notify)
	def isConnected(self):
		if dbg:
			print("PyMailSMTPService isConnected", file=dbgout)
		return self.server != None
	def getCurrentConnectionContext(self):
		if dbg:
			print("PyMailSMTPService getCurrentConnectionContext", file=dbgout)
		return self.connectioncontext
	def sendMailMessage(self, xMailMessage):
		COMMASPACE = ', '

		if dbg:
			print("PyMailSMTPService sendMailMessage", file=dbgout)
		recipients = xMailMessage.getRecipients()
		sendermail = xMailMessage.SenderAddress
		sendername = xMailMessage.SenderName
		subject = xMailMessage.Subject
		ccrecipients = xMailMessage.getCcRecipients()
		bccrecipients = xMailMessage.getBccRecipients()
		if dbg:
			print("PyMailSMTPService subject: " + subject, file=dbgout)
			print("PyMailSMTPService from:  " + sendername, file=dbgout)
			print("PyMailSMTPService from:  " + sendermail, file=dbgout)
			print("PyMailSMTPService send to: %s" % (recipients,), file=dbgout)

		attachments = xMailMessage.getAttachments()

		textmsg = Message()

		content = xMailMessage.Body
		flavors = content.getTransferDataFlavors()
		if dbg:
			print("PyMailSMTPService flavors len: %d" % (len(flavors),), file=dbgout)

		#Use first flavor that's sane for an email body
		for flavor in flavors:
			if flavor.MimeType.find('text/html') != -1 or flavor.MimeType.find('text/plain') != -1:
				if dbg:
					print("PyMailSMTPService mimetype is: " + flavor.MimeType, file=dbgout)
				textbody = content.getTransferData(flavor)

				if len(textbody):
					mimeEncoding = re.sub("charset=.*", "charset=UTF-8", flavor.MimeType)
					if mimeEncoding.find('charset=UTF-8') == -1:
						mimeEncoding = mimeEncoding + "; charset=UTF-8"
					textmsg['Content-Type'] = mimeEncoding
					textmsg['MIME-Version'] = '1.0'

					try:
						#it's a string, get it as utf-8 bytes
						textbody = textbody.encode('utf-8')
					except:
						#it's a bytesequence, get raw bytes
						textbody = textbody.value
					if sys.version >= '3':
						if sys.version_info.minor < 3 or (sys.version_info.minor == 3 and sys.version_info.micro <= 1):
							#http://stackoverflow.com/questions/9403265/how-do-i-use-python-3-2-email-module-to-send-unicode-messages-encoded-in-utf-8-w
							#see http://bugs.python.org/16564, etc. basically it now *seems* to be all ok
							#in python 3.3.2 onwards, but a little busted in 3.3.0

							textbody = textbody.decode('iso8859-1')
						else:
							textbody = textbody.decode('utf-8')
						c = Charset('utf-8')
						c.body_encoding = QP
						textmsg.set_payload(textbody, c)
					else:
						textmsg.set_payload(textbody)

				break

		if (len(attachments)):
			msg = MIMEMultipart()
			msg.epilogue = ''
			msg.attach(textmsg)
		else:
			msg = textmsg

		hdr = Header(sendername, 'utf-8')
		hdr.append('<'+sendermail+'>','us-ascii')
		msg['Subject'] = subject
		msg['From'] = hdr
		msg['To'] = COMMASPACE.join(recipients)
		if len(ccrecipients):
			msg['Cc'] = COMMASPACE.join(ccrecipients)
		if xMailMessage.ReplyToAddress != '':
			msg['Reply-To'] = xMailMessage.ReplyToAddress

		mailerstring = "LibreOffice via Caolan's mailmerge component"
		try:
			ctx = uno.getComponentContext()
			aConfigProvider = ctx.ServiceManager.createInstance("com.sun.star.configuration.ConfigurationProvider")
			prop = uno.createUnoStruct('com.sun.star.beans.PropertyValue')
			prop.Name = "nodepath"
			prop.Value = "/org.openoffice.Setup/Product"
			aSettings = aConfigProvider.createInstanceWithArguments("com.sun.star.configuration.ConfigurationAccess",
				(prop,))
			mailerstring = aSettings.getByName("ooName") + " " + \
				aSettings.getByName("ooSetupVersion") + " via Caolan's mailmerge component"
		except:
			pass

		msg['X-Mailer'] = mailerstring
		msg['Date'] = formatdate(localtime=True)

		for attachment in attachments:
			content = attachment.Data
			flavors = content.getTransferDataFlavors()
			flavor = flavors[0]
			ctype = flavor.MimeType
			maintype, subtype = ctype.split('/', 1)
			msgattachment = MIMEBase(maintype, subtype)
			data = content.getTransferData(flavor)
			msgattachment.set_payload(data.value)
			encode_base64(msgattachment)
			fname = attachment.ReadableName
			try:
				msgattachment.add_header('Content-Disposition', 'attachment', \
					filename=fname)
			except:
				msgattachment.add_header('Content-Disposition', 'attachment', \
					filename=('utf-8','',fname))
			if dbg:
				print(("PyMailSMTPService attachmentheader: ", str(msgattachment)), file=dbgout)

			msg.attach(msgattachment)

		uniquer = {}
		for key in recipients:
			uniquer[key] = True
		if len(ccrecipients):
			for key in ccrecipients:
				uniquer[key] = True
		if len(bccrecipients):
			for key in bccrecipients:
				uniquer[key] = True
		truerecipients = uniquer.keys()

		if dbg:
			print(("PyMailSMTPService recipients are: ", truerecipients), file=dbgout)

		self.server.sendmail(sendermail, truerecipients, msg.as_string())

class PyMailIMAPService(unohelper.Base, XMailService):
	def __init__( self, ctx ):
		self.ctx = ctx
		self.listeners = []
		self.supportedtypes = ('Insecure', 'Ssl')
		self.server = None
		self.connectioncontext = None
		self.notify = EventObject(self)
		if dbg:
			print("PyMailIMAPService init", file=dbgout)
	def addConnectionListener(self, xListener):
		if dbg:
			print("PyMailIMAPService addConnectionListener", file=dbgout)
		self.listeners.append(xListener)
	def removeConnectionListener(self, xListener):
		if dbg:
			print("PyMailIMAPService removeConnectionListener", file=dbgout)
		self.listeners.remove(xListener)
	def getSupportedConnectionTypes(self):
		if dbg:
			print("PyMailIMAPService getSupportedConnectionTypes", file=dbgout)
		return self.supportedtypes
	def connect(self, xConnectionContext, xAuthenticator):
		if dbg:
			print("PyMailIMAPService connect", file=dbgout)

		self.connectioncontext = xConnectionContext
		server = xConnectionContext.getValueByName("ServerName")
		if dbg:
			print(server, file=dbgout)
		port = int(xConnectionContext.getValueByName("Port"))
		if dbg:
			print(port, file=dbgout)
		connectiontype = xConnectionContext.getValueByName("ConnectionType")
		if dbg:
			print(connectiontype, file=dbgout)
		print("BEFORE", file=dbgout)
		if connectiontype.upper() == 'SSL':
			self.server = imaplib.IMAP4_SSL(server, port)
		else:
			self.server = imaplib.IMAP4(server, port)
		print("AFTER", file=dbgout)

		user = xAuthenticator.getUserName()
		password = xAuthenticator.getPassword()
		if user != '':
			if sys.version < '3': # fdo#59249 i#105669 Python 2 needs "ascii"
				user = user.encode('ascii')
				password = password.encode('ascii')
			if dbg:
				print("Logging in, username of: " + user, file=dbgout)
			self.server.login(user, password)

		for listener in self.listeners:
			listener.connected(self.notify)
	def disconnect(self):
		if dbg:
			print("PyMailIMAPService disconnect", file=dbgout)
		if self.server:
			self.server.logout()
			self.server = None
		for listener in self.listeners:
			listener.disconnected(self.notify)
	def isConnected(self):
		if dbg:
			print("PyMailIMAPService isConnected", file=dbgout)
		return self.server != None
	def getCurrentConnectionContext(self):
		if dbg:
			print("PyMailIMAPService getCurrentConnectionContext", file=dbgout)
		return self.connectioncontext

class PyMailPOP3Service(unohelper.Base, XMailService):
	def __init__( self, ctx ):
		self.ctx = ctx
		self.listeners = []
		self.supportedtypes = ('Insecure', 'Ssl')
		self.server = None
		self.connectioncontext = None
		self.notify = EventObject(self)
		if dbg:
			print("PyMailPOP3Service init", file=dbgout)
	def addConnectionListener(self, xListener):
		if dbg:
			print("PyMailPOP3Service addConnectionListener", file=dbgout)
		self.listeners.append(xListener)
	def removeConnectionListener(self, xListener):
		if dbg:
			print("PyMailPOP3Service removeConnectionListener", file=dbgout)
		self.listeners.remove(xListener)
	def getSupportedConnectionTypes(self):
		if dbg:
			print("PyMailPOP3Service getSupportedConnectionTypes", file=dbgout)
		return self.supportedtypes
	def connect(self, xConnectionContext, xAuthenticator):
		if dbg:
			print("PyMailPOP3Service connect", file=dbgout)

		self.connectioncontext = xConnectionContext
		server = xConnectionContext.getValueByName("ServerName")
		if dbg:
			print(server, file=dbgout)
		port = int(xConnectionContext.getValueByName("Port"))
		if dbg:
			print(port, file=dbgout)
		connectiontype = xConnectionContext.getValueByName("ConnectionType")
		if dbg:
			print(connectiontype, file=dbgout)
		print("BEFORE", file=dbgout)
		if connectiontype.upper() == 'SSL':
			self.server = poplib.POP3_SSL(server, port)
		else:
			tout = xConnectionContext.getValueByName("Timeout")
			if dbg:
				print(isinstance(tout,int), file=dbgout)
			if not isinstance(tout,int):
				tout = _GLOBAL_DEFAULT_TIMEOUT
			if dbg:
				print("Timeout: " + str(tout), file=dbgout)
			self.server = poplib.POP3(server, port, timeout=tout)
		print("AFTER", file=dbgout)

		user = xAuthenticator.getUserName()
		password = xAuthenticator.getPassword()
		if sys.version < '3': # fdo#59249 i#105669 Python 2 needs "ascii"
			user = user.encode('ascii')
			password = password.encode('ascii')
		if dbg:
			print("Logging in, username of: " + user, file=dbgout)
		self.server.user(user)
		self.server.pass_(password)

		for listener in self.listeners:
			listener.connected(self.notify)
	def disconnect(self):
		if dbg:
			print("PyMailPOP3Service disconnect", file=dbgout)
		if self.server:
			self.server.quit()
			self.server = None
		for listener in self.listeners:
			listener.disconnected(self.notify)
	def isConnected(self):
		if dbg:
			print("PyMailPOP3Service isConnected", file=dbgout)
		return self.server != None
	def getCurrentConnectionContext(self):
		if dbg:
			print("PyMailPOP3Service getCurrentConnectionContext", file=dbgout)
		return self.connectioncontext

class PyMailServiceProvider(unohelper.Base, XMailServiceProvider, XServiceInfo):
	def __init__( self, ctx ):
		if dbg:
			print("PyMailServiceProvider init", file=dbgout)
		self.ctx = ctx
	def create(self, aType):
		if dbg:
			print("PyMailServiceProvider create with", aType, file=dbgout)
		if aType == SMTP:
			return PyMailSMTPService(self.ctx);
		elif aType == POP3:
			return PyMailPOP3Service(self.ctx);
		elif aType == IMAP:
			return PyMailIMAPService(self.ctx);
		else:
			print("PyMailServiceProvider, unknown TYPE " + aType, file=dbgout)

	def getImplementationName(self):
		return g_providerImplName

	def supportsService(self, ServiceName):
		return g_ImplementationHelper.supportsService(g_providerImplName, ServiceName)

	def getSupportedServiceNames(self):
		return g_ImplementationHelper.getSupportedServiceNames(g_providerImplName)

class PyMailMessage(unohelper.Base, XMailMessage):
	def __init__( self, ctx, sTo='', sFrom='', Subject='', Body=None, aMailAttachment=None ):
		if dbg:
			print("PyMailMessage init", file=dbgout)
		self.ctx = ctx

		self.recipients = [sTo]
		self.ccrecipients = []
		self.bccrecipients = []
		self.aMailAttachments = []
		if aMailAttachment != None:
			self.aMailAttachments.append(aMailAttachment)

		self.SenderName, self.SenderAddress = parseaddr(sFrom)
		self.ReplyToAddress = sFrom
		self.Subject = Subject
		self.Body = Body
		if dbg:
			print("post PyMailMessage init", file=dbgout)
	def addRecipient( self, recipient ):
		if dbg:
			print("PyMailMessage.addRecipient: " + recipient, file=dbgout)
		self.recipients.append(recipient)
	def addCcRecipient( self, ccrecipient ):
		if dbg:
			print("PyMailMessage.addCcRecipient: " + ccrecipient, file=dbgout)
		self.ccrecipients.append(ccrecipient)
	def addBccRecipient( self, bccrecipient ):
		if dbg:
			print("PyMailMessage.addBccRecipient: " + bccrecipient, file=dbgout)
		self.bccrecipients.append(bccrecipient)
	def getRecipients( self ):
		if dbg:
			print("PyMailMessage.getRecipients: " + str(self.recipients), file=dbgout)
		return tuple(self.recipients)
	def getCcRecipients( self ):
		if dbg:
			print("PyMailMessage.getCcRecipients: " + str(self.ccrecipients), file=dbgout)
		return tuple(self.ccrecipients)
	def getBccRecipients( self ):
		if dbg:
			print("PyMailMessage.getBccRecipients: " + str(self.bccrecipients), file=dbgout)
		return tuple(self.bccrecipients)
	def addAttachment( self, aMailAttachment ):
		if dbg:
			print("PyMailMessage.addAttachment", file=dbgout)
		self.aMailAttachments.append(aMailAttachment)
	def getAttachments( self ):
		if dbg:
			print("PyMailMessage.getAttachments", file=dbgout)
		return tuple(self.aMailAttachments)

	def getImplementationName(self):
		return g_messageImplName

	def supportsService(self, ServiceName):
		return g_ImplementationHelper.supportsService(g_messageImplName, ServiceName)

	def getSupportedServiceNames(self):
		return g_ImplementationHelper.getSupportedServiceNames(g_messageImplName)

g_ImplementationHelper.addImplementation( \
	PyMailServiceProvider, g_providerImplName,
		("com.sun.star.mail.MailServiceProvider",),)
g_ImplementationHelper.addImplementation( \
	PyMailMessage, g_messageImplName,
		("com.sun.star.mail.MailMessage",),)

# vim: set shiftwidth=4 softtabstop=4 expandtab: