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=begin
Feed2Imap - RSS/Atom Aggregator uploading to an IMAP Server
Copyright (c) 2005 Lucas Nussbaum <lucas@lucas-nussbaum.net>
This file contains classes to parse a feed and store it as a Channel object.
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
=end
require 'rexml/document'
require 'time'
require 'rmail'
require 'feedparser'
require 'feedparser/text-output'
require 'feedparser/html-output'
require 'base64'
require 'rmail'
require 'digest/md5'
class String
def needMIME
utf8 = false
begin
self.unpack('U*').each do |c|
if c > 127
utf8 = true
break
end
end
rescue
# safe fallback in case of problems
utf8 = true
end
utf8
end
end
def item_to_mail(item, id, updated, from = 'Feed2Imap', inline_images = false, wrapto = false)
message = RMail::Message::new
if item.creator and item.creator != ''
if item.creator.include?('@')
message.header['From'] = item.creator.chomp
else
message.header['From'] = "=?utf-8?b?#{Base64::encode64(item.creator.chomp).gsub("\n",'')}?= <feed2imap@acme.com>"
end
else
message.header['From'] = "=?utf-8?b?#{Base64::encode64(from).gsub("\n",'')}?= <feed2imap@acme.com>"
end
message.header['To'] = "=?utf-8?b?#{Base64::encode64(from).gsub("\n",'')}?= <feed2imap@acme.com>"
if item.date.nil?
message.header['Date'] = Time::new.rfc2822
else
message.header['Date'] = item.date.rfc2822
end
message.header['X-Feed2Imap-Version'] = F2I_VERSION if defined?(F2I_VERSION)
message.header['Message-Id'] = id
message.header['X-F2IStatus'] = "Updated" if updated
# treat subject. Might need MIME encoding.
subj = item.title or (item.date and item.date.to_s) or item.link
if subj
if subj.needMIME
message.header['Subject'] = "=?utf-8?b?#{Base64::encode64(subj).gsub("\n",'')}?="
else
message.header['Subject'] = subj
end
end
textpart = RMail::Message::new
textpart.header['Content-Type'] = 'text/plain; charset=utf-8; format=flowed'
textpart.header['Content-Transfer-Encoding'] = '8bit'
textpart.body = item.to_text(true, wrapto, false)
htmlpart = RMail::Message::new
htmlpart.header['Content-Type'] = 'text/html; charset=utf-8'
htmlpart.header['Content-Transfer-Encoding'] = '8bit'
htmlpart.body = item.to_html
# inline images as attachments
imgs = []
if inline_images
cids = []
htmlpart.body.gsub!(/(<img[^>]+)src="(\S+?\/([^\/]+?\.(png|gif|jpe?g)))"([^>]*>)/i) do |match|
# $2 contains url, $3 the image name, $4 the image extension
begin
image = Base64.encode64(HTTPFetcher::fetch($2, Time.at(0)).chomp) + "\n"
cid = "#{Digest::MD5.hexdigest($2)}@feed2imap.acme.com"
if not cids.include?(cid)
cids << cid
imgpart = RMail::Message.new
imgpart.header.set('Content-ID', "<#{cid}>")
type = $4
type = 'jpeg' if type.downcase == 'jpg' # hack hack hack
imgpart.header.set('Content-Type', "image/#{type}", 'name' => $3)
imgpart.header.set('Content-Disposition', 'attachment', 'filename' => $3)
imgpart.header.set('Content-Transfer-Encoding', 'base64')
imgpart.body = image
imgs << imgpart
end
# now to specify what to replace with
newtag = "#{$1}src=\"cid:#{cid}\"#{$5}"
#print "#{cid}: Replacing '#{$&}' with '#{newtag}'...\n"
newtag
rescue
#print "Error while fetching image #{$2}: #{$!}...\n"
$& # don't modify on exception
end
end
end
if imgs.length > 0
message.header.set('Content-Type', 'multipart/related', 'type'=> 'multipart/alternative')
texthtml = RMail::Message::new
texthtml.header.set('Content-Type', 'multipart/alternative')
texthtml.add_part(textpart)
texthtml.add_part(htmlpart)
message.add_part(texthtml)
imgs.each do |i|
message.add_part(i)
end
else
message.header['Content-Type'] = 'multipart/alternative'
message.add_part(textpart)
message.add_part(htmlpart)
end
return message.to_s
end
|
