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import re
from lamson.routing import route, stateless
from lamson.server import Relay
from django.utils.translation import ugettext as _
from django.core.files.uploadedfile import SimpleUploadedFile
from django.conf import settings as django_settings
from askbot.models import ReplyAddress, Tag
from askbot.utils import mail
from askbot.conf import settings as askbot_settings
#we might end up needing to use something like this
#to distinguish the reply text from the quoted original message
"""
def _strip_message_qoute(message_text):
import re
result = message_text
pattern = "(?P<qoute>" + \
"On ([a-zA-Z0-9, :/<>@\.\"\[\]]* wrote:.*)|" + \
"From: [\w@ \.]* \[mailto:[\w\.]*@[\w\.]*\].*|" + \
"From: [\w@ \.]*(\n|\r\n)+Sent: [\*\w@ \.,:/]*(\n|\r\n)+To:.*(\n|\r\n)+.*|" + \
"[- ]*Forwarded by [\w@ \.,:/]*.*|" + \
"From: [\w@ \.<>\-]*(\n|\r\n)To: [\w@ \.<>\-]*(\n|\r\n)Date: [\w@ \.<>\-:,]*\n.*|" + \
"From: [\w@ \.<>\-]*(\n|\r\n)To: [\w@ \.<>\-]*(\n|\r\n)Sent: [\*\w@ \.,:/]*(\n|\r\n).*|" + \
"From: [\w@ \.<>\-]*(\n|\r\n)To: [\w@ \.<>\-]*(\n|\r\n)Subject:.*|" + \
"(-| )*Original Message(-| )*.*)"
groups = re.search(pattern, email_text, re.IGNORECASE + re.DOTALL)
qoute = None
if not groups is None:
if groups.groupdict().has_key("qoute"):
qoute = groups.groupdict()["qoute"]
if qoute:
result = reslut.split(qoute)[0]
#if the last line contains an email message remove that one too
lines = result.splitlines(True)
if re.search(r'[\w\.]*@[\w\.]*\].*', lines[-1]):
result = '\n'.join(lines[:-1])
return result
"""
def get_disposition(part):
"""return list of part's content dispositions
or an empty list
"""
dispositions = part.content_encoding.get('Content-Disposition', None)
if dispositions:
return dispositions[0]
else:
return list()
def get_attachment_info(part):
return part.content_encoding['Content-Disposition'][1]
def is_attachment(part):
"""True if part content disposition is
attachment"""
return get_disposition(part) == 'attachment'
def is_inline_attachment(part):
"""True if part content disposition is
inline"""
return get_disposition(part) == 'inline'
def format_attachment(part):
"""takes message part and turns it into SimpleUploadedFile object"""
att_info = get_attachment_info(part)
name = att_info.get('filename', None)
content_type = get_content_type(part)
return SimpleUploadedFile(name, part.body, content_type)
def get_content_type(part):
"""return content type of the message part"""
return part.content_encoding.get('Content-Type', (None,))[0]
def is_body(part):
"""True, if part is plain text and is not attachment"""
if get_content_type(part) == 'text/plain':
if not is_attachment(part):
return True
return False
def get_part_type(part):
if is_body(part):
return 'body'
elif is_attachment(part):
return 'attachment'
elif is_inline_attachment(part):
return 'inline'
def get_parts(message):
"""returns list of tuples (<part_type>, <formatted_part>),
where <part-type> is one of 'body', 'attachment', 'inline'
and <formatted-part> - will be in the directly usable form:
* if it is 'body' - then it will be unicode text
* for attachment - it will be django's SimpleUploadedFile instance
There may be multiple 'body' parts as well as others
usually the body is split when there are inline attachments present.
"""
parts = list()
if message.body():
parts.append(('body', message.body()))
for part in message.walk():
part_type = get_part_type(part)
if part_type == 'body':
part_content = part.body
elif part_type in ('attachment', 'inline'):
part_content = format_attachment(part)
else:
continue
parts.append((part_type, part_content))
return parts
@route('(addr)@(host)', addr = '.+')
@stateless
def ASK(message, host = None, addr = None):
if addr.startswith('reply-'):
return
parts = get_parts(message)
from_address = message.From
subject = message['Subject']#why lamson does not give it normally?
if addr == 'ask':
mail.process_emailed_question(from_address, subject, parts)
else:
if askbot_settings.GROUP_EMAIL_ADDRESSES_ENABLED == False:
return
try:
group_tag = Tag.group_tags.get(
deleted = False,
name__iexact = addr
)
mail.process_emailed_question(
from_address, subject, parts, tags = [group_tag.name, ]
)
except Tag.DoesNotExist:
#do nothing because this handler will match all emails
return
except Tag.MultipleObjectsReturned:
return
@route('reply-(address)@(host)', address='.+')
@stateless
def PROCESS(message, address = None, host = None):
"""handler to process the emailed message
and make a post to askbot based on the contents of
the email, including the text body and the file attachments"""
try:
for rule in django_settings.LAMSON_FORWARD:
if re.match(rule['pattern'], message.base['to']):
relay = Relay(host=rule['host'],
port=rule['port'], debug=1)
relay.deliver(message)
return
except AttributeError:
pass
error = None
try:
reply_address = ReplyAddress.objects.get(
address = address,
allowed_from_email = message.From
)
parts = get_parts(message)
if reply_address.was_used:
reply_address.edit_post(parts)
else:
reply_address.create_reply(parts)
except ReplyAddress.DoesNotExist:
error = _("You were replying to an email address\
unknown to the system or you were replying from a different address from the one where you\
received the notification.")
except Exception, e:
import sys
sys.stderr.write(str(e))
import traceback
sys.stderr.write(traceback.format_exc())
if error is not None:
from askbot.utils import mail
from django.template import Context
from askbot.skins.loaders import get_template
template = get_template('reply_by_email_error.html')
body_text = template.render(Context({'error':error}))
mail.send_mail(
subject_line = "Error posting your reply",
body_text = body_text,
recipient_list = [message.From],
)
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