Url.py 6.16 KB
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##############################################################################
#
# Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
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#                    Jean-Paul Smets-Solanes <jp@nexedi.com>
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#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
##############################################################################

from AccessControl import ClassSecurityInfo
from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
from Products.ERP5Type.Base import Base
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from Products.ERP5.Document.Coordinate import Coordinate
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from cStringIO import StringIO
from MimeWriter import MimeWriter
from base64 import encode
from mimetools import choose_boundary
from mimetypes import guess_type

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class Url(Coordinate, Base):
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  """
  A Url is allows to represent in a standard way coordinates
  such as web sites, emails, ftp sites, etc.
  """
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  meta_type = 'ERP5 Url'
  portal_type = 'Url'
  add_permission = Permissions.AddPortalContent
  isPortalContent = 1
  isRADContent = 1
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  # Declarative security
  security = ClassSecurityInfo()
  security.declareObjectProtected(Permissions.AccessContentsInformation)
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  # Default Properties
  property_sheets = ( PropertySheet.Base
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                      , PropertySheet.SimpleItem
                      , PropertySheet.Url
                      )

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  security.declareProtected(Permissions.AccessContentsInformation,
                            'asText')
  def asText(self):
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    """
    Returns a text representation of the Url
    """
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    return self.url_string

  security.declareProtected(Permissions.ModifyPortalContent, 'fromText')
  def fromText(self, text):
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    """
    set the Url from its text representation
    """
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    self.url_string = text

  security.declareProtected(Permissions.AccessContentsInformation,
                            'standardTextFormat')
  def standardTextFormat(self):
    """
    Returns the standard text formats for urls
    """
    return ("http://www.erp5.org","mailto:info@erp5.org")


  def send(self, from_url=None, to_url=None, msg=None, subject=None,  attachment_list=None):
    """
    This method was previously named 'SendMail' and is used to send email
    attachment_list is a list of dictionnary wich has keys :
     - name : name of the attachment,
     - content: data of the attachment
     - mime_type: mime-type corresponding to the attachment     
    """
    # get the mailhost object
    try:
      mailhost=self.getPortalObject().MailHost
    except:
      raise AttributeError, "Cannot find a Mail Host object"
    else:
      if from_url is None:
        from_url = self.getUrlString(None)
      if to_url is None:
        to_url = self.getUrlString(None)
      if from_url is None or to_url is None:
        raise AttributeError, "No mail defined"
      
      # Create multi-part MIME message.
      message = StringIO()
      writer = MimeWriter(message)
      writer.addheader('From', from_url)
      writer.addheader('To', to_url)
      writer.addheader('Subject', subject)
      writer.addheader('MimeVersion', '1.0')
      # Don't forget to flush the headers for Communicator
      writer.flushheaders()
      # Generate a unique section boundary:
      outer_boundary = choose_boundary()

      # Start the main message body. Write a brief message
      # for non-MIME-capable readers:
      dummy_file=writer.startmultipartbody("mixed",outer_boundary)
      dummy_file.write("If you can read this, your mailreader\n")
      dummy_file.write("can not handle multi-part messages!\n")

      submsg = writer.nextpart()
      submsg.addheader("Content-Transfer-Encoding", "7bit")
      FirstPartFile=submsg.startbody("text/plain", [("charset","US-ASCII")])
      FirstPartFile.write(msg)

      if attachment_list!=None:
        for attachment in attachment_list:
          if attachment.has_key('name'):
            attachment_name = attachment['name']
          else:
            attachment_name = ''
          # try to guess the mime type
          if not attachment.has_key('mime_type'):
            type, encoding = guess_type( attachment_name )
            if type != None:
              attachment['mime_type'] = type
            else:
              attachment['mime_type'] = 'application/octet-stream'
          # attach it
          submsg = writer.nextpart()
          if attachment['mime_type'] == 'text/plain':
            attachment_file = StringIO(attachment['content'] )
            submsg.addheader("Content-Transfer-Encoding", "7bit")
            submsg.addheader("Content-Disposition", "attachment;\nfilename="+attachment_name)
            submsg.flushheaders()

            f = submsg.startbody(attachment['mime_type'] , [("name", attachment_name)])
            f.write(attachment_file.getvalue())
          else:
            #  encode non-plaintext attachment in base64
            attachment_file = StringIO(attachment['content'] )
            submsg.addheader("Content-Transfer-Encoding", "base64")
            submsg.flushheaders()
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            f = submsg.startbody(attachment['mime_type'] , [("name", attachment_name)])
            encode(attachment_file, f)
      # close the writer
      writer.lastpart()
      # send mail to user
      mailhost.send(message.getvalue(), to_url, from_url)
      return None