#!/usr/bin/python
import email, os, re, sys, time
from xml.sax.saxutils import escape

blosxom = '/home/rubys/web/intertwingly.net/blosxom'

msg = email.message_from_file(sys.stdin)

# determine the target blog entry.  If this fails, python will throw
# an exception, and procmail will resume with 
target = re.findall("(^|\W)blog\W(\d+)(\W|$)",msg['To'])[0][1]

title  = escape(msg['Subject'])
name   = escape(msg['From'].split(' <')[0]).replace('"','')
addr   = escape(msg.get_unixfrom().split(' ')[1]).replace('"','&quot;')
path   = escape(re.sub('\s+', ' ', msg['Received'])).replace('"','&quot;')

if title.find('*****SPAM*****')==0: sys.exit(99)

# extract and escape the text portion of the payload
body = msg.get_payload()
if isinstance(body,list): body=body[0].get_payload()
body = escape(body.strip())

body=re.compile("(SPAM.*SPAM[^\n]*)",re.S).sub("<pre>\\1</pre>",body)

if body.startswith('<p>&lt;html&gt;&lt;body bgcolor=')==0: sys.exit(99)

# default title to the title of the blog entry
entry=blosxom+'/'+target+'.txt'
if not title: title=open(entry).readline().strip()

# only allow email for 30 days
age=(time.mktime(time.localtime())-os.stat(entry).st_mtime)/86400
if age>=31: sys.exit(99)

# write the comment out where blosxom will find it
file=blosxom+'/'+target+'-'+str(int(time.mktime(time.gmtime())))+'.cmt'
out=open(file, 'w')

out.write("""%s
%s
<br /><br />Emailed by <a href="mailto:%s" title="%s">%s</a>
""" % (title, body, addr, path, name))

out.close()

# make the file readable
os.chmod(file, 0664)