# coding: utf-8
# == Schema Information
#
# Table name: incoming_messages
#
# id :integer not null, primary key
# info_request_id :integer not null
# created_at :datetime not null
# updated_at :datetime not null
# raw_email_id :integer not null
# cached_attachment_text_clipped :text
# cached_main_body_text_folded :text
# cached_main_body_text_unfolded :text
# subject :text
# mail_from_domain :text
# valid_to_reply_to :boolean
# last_parsed :datetime
# mail_from :text
# sent_at :datetime
# prominence :string(255) default("normal"), not null
# prominence_reason :text
#
# models/incoming_message.rb:
# An (email) message from really anybody to be logged with a request. e.g. A
# response from the public body.
#
# Copyright (c) 2007 UK Citizens Online Democracy. All rights reserved.
# Email: hello@mysociety.org; WWW: http://www.mysociety.org/
# TODO
# Move some of the (e.g. quoting) functions here into rblib, as they feel
# general not specific to IncomingMessage.
require 'htmlentities'
require 'rexml/document'
require 'zip/zip'
require 'iconv' unless String.method_defined?(:encode)
class IncomingMessage < ActiveRecord::Base
extend MessageProminence
belongs_to :info_request
validates_presence_of :info_request
validates_presence_of :raw_email
has_many :outgoing_message_followups, :foreign_key => 'incoming_message_followup_id', :class_name => 'OutgoingMessage'
has_many :foi_attachments, :order => 'id'
has_many :info_request_events # never really has many, but could in theory
belongs_to :raw_email
has_prominence
# Given that there are in theory many info request events, a convenience method for
# getting the response event
def response_event
self.info_request_events.detect{ |e| e.event_type == 'response' }
end
# Return a cached structured mail object
def mail(force = nil)
if (!force.nil? || @mail.nil?) && !self.raw_email.nil?
@mail = MailHandler.mail_from_raw_email(self.raw_email.data)
end
@mail
end
def empty_from_field?
self.mail.from_addrs.nil? || self.mail.from_addrs.size == 0
end
def from_email
MailHandler.get_from_address(self.mail)
end
def addresses
MailHandler.get_all_addresses(self.mail)
end
def message_id
self.mail.message_id
end
# Return false if for some reason this is a message that we shouldn't let them reply to
def _calculate_valid_to_reply_to
# check validity of email
email = self.from_email
if email.nil? || !MySociety::Validate.is_valid_email(email)
return false
end
# reject postmaster - authorities seem to nearly always not respond to
# email to postmaster, and it tends to only happen after delivery failure.
# likewise Mailer-Daemon, Auto_Reply...
prefix = email
prefix =~ /^(.*)@/
prefix = $1
if !prefix.nil? && prefix.downcase.match(/^(postmaster|mailer-daemon|auto_reply|do.?not.?reply|no.reply)$/)
return false
end
if MailHandler.empty_return_path?(self.mail)
return false
end
if !MailHandler.get_auto_submitted(self.mail).nil?
return false
end
return true
end
def parse_raw_email!(force = nil)
# The following fields may be absent; we treat them as cached
# values in case we want to regenerate them (due to mail
# parsing bugs, etc).
if self.raw_email.nil?
raise "Incoming message id=#{id} has no raw_email"
end
if (!force.nil? || self.last_parsed.nil?)
ActiveRecord::Base.transaction do
self.extract_attachments!
write_attribute(:sent_at, self.mail.date || self.created_at)
write_attribute(:subject, self.mail.subject)
write_attribute(:mail_from, MailHandler.get_from_name(self.mail))
if self.from_email
self.mail_from_domain = PublicBody.extract_domain_from_email(self.from_email)
else
self.mail_from_domain = ""
end
write_attribute(:valid_to_reply_to, self._calculate_valid_to_reply_to)
self.last_parsed = Time.now
self.foi_attachments reload=true
self.save!
end
end
end
def valid_to_reply_to?
return self.valid_to_reply_to
end
# The cached fields mentioned in the previous comment
# TODO: there must be a nicer way to do this without all that
# repetition. I tried overriding method_missing but got some
# unpredictable results.
def valid_to_reply_to
parse_raw_email!
super
end
def sent_at
parse_raw_email!
super
end
def subject
parse_raw_email!
super
end
def mail_from
parse_raw_email!
super
end
def safe_mail_from
if !self.mail_from.nil?
mail_from = self.mail_from.dup
self.info_request.apply_censor_rules_to_text!(mail_from)
return mail_from
end
end
def specific_from_name?
!safe_mail_from.nil? && safe_mail_from.strip != info_request.public_body.name.strip
end
def from_public_body?
safe_mail_from.nil? || (mail_from_domain == info_request.public_body.request_email_domain)
end
def mail_from_domain
parse_raw_email!
super
end
# And look up by URL part number and display filename to get an attachment
# TODO: relies on extract_attachments calling MailHandler.ensure_parts_counted
# The filename here is passed from the URL parameter, so it's the
# display_filename rather than the real filename.
def self.get_attachment_by_url_part_number_and_filename(attachments, found_url_part_number, display_filename)
attachment_by_part_number = attachments.detect { |a| a.url_part_number == found_url_part_number }
if attachment_by_part_number && attachment_by_part_number.display_filename == display_filename
# Then the filename matches, which is fine:
attachment_by_part_number
else
# Otherwise if the URL part number and filename don't
# match - this is probably due to a reparsing of the
# email. In that case, try to find a unique matching
# filename from any attachment.
attachments_by_filename = attachments.select { |a|
a.display_filename == display_filename
}
if attachments_by_filename.length == 1
attachments_by_filename[0]
else
nil
end
end
end
def apply_masks!(text, content_type)
mask_options = { :censor_rules => info_request.applicable_censor_rules,
:masks => info_request.masks }
AlaveteliTextMasker.apply_masks!(text, content_type, mask_options)
end
# Lotus notes quoting yeuch!
def remove_lotus_quoting(text, replacement = "FOLDED_QUOTED_SECTION")
text = text.dup
return text if self.info_request.user_name.nil?
name = Regexp.escape(self.info_request.user_name)
# To end of message sections
text.gsub!(/^\s?#{name}[^\n]+\n([^\n]+\n)?\s?Sent by:[^\n]+\n.*/im, "\n\n" + replacement)
# Some other sort of forwarding quoting
text.gsub!(/^\s?#{name}\s+To\s+FOI requests at.*/im, "\n\n" + replacement)
# http://www.whatdotheyknow.com/request/229/response/809
text.gsub!(/^\s?From: [^\n]+\n\s?Sent: [^\n]+\n\s?To:\s+['"]?#{name}['"]?\n\s?Subject:.*/im, "\n\n" + replacement)
return text
end
# Remove quoted sections from emails (eventually the aim would be for this
# to do as good a job as GMail does) TODO: bet it needs a proper parser
# TODO: and this FOLDED_QUOTED_SECTION stuff is a mess
def self.remove_quoted_sections(text, replacement = "FOLDED_QUOTED_SECTION")
text = text.dup
replacement = "\n" + replacement + "\n"
# First do this peculiar form of quoting, as the > single line quoting
# further below messes with it. Note the carriage return where it wraps -
# this can happen anywhere according to length of the name/email. e.g.
# >>> D K Elwell <[email address]> 17/03/2008
# 01:51:50 >>>
# http://www.whatdotheyknow.com/request/71/response/108
# http://www.whatdotheyknow.com/request/police_powers_to_inform_car_insu
# http://www.whatdotheyknow.com/request/secured_convictions_aided_by_cct
multiline_original_message = '(' + '''>>>.* \d\d/\d\d/\d\d\d\d\s+\d\d:\d\d(?::\d\d)?\s*>>>''' + ')'
text.gsub!(/^(#{multiline_original_message}\n.*)$/m, replacement)
# On Thu, Nov 28, 2013 at 9:08 AM, A User
# <[1]request-7-skm40s2ls@xxx.xxxx> wrote:
text.gsub!(/^( On [^\n]+\n\s*\<[^>\n]+\> (wrote|said):\s*\n.*)$/m, replacement)
# Single line sections
text.gsub!(/^(>.*\n)/, replacement)
text.gsub!(/^(On .+ (wrote|said):\n)/, replacement)
['-', '_', '*', '#'].each do |scorechar|
score = /(?:[#{scorechar}]\s*){8,}/
text.sub!(/(Disclaimer\s+)? # appears just before
(
\s*#{score}\n(?:(?!#{score}\n).)*? # top line
(disclaimer:\n|confidential|received\sthis\semail\sin\serror|virus|intended\s+recipient|monitored\s+centrally|intended\s+(for\s+|only\s+for\s+use\s+by\s+)the\s+addressee|routinely\s+monitored|MessageLabs|unauthorised\s+use)
.*?(?:#{score}|\z) # bottom line OR end of whole string (for ones with no terminator TODO: risky)
)
/imx, replacement)
end
# Special paragraphs
# http://www.whatdotheyknow.com/request/identity_card_scheme_expenditure
text.gsub!(/^[^\n]+Government\s+Secure\s+Intranet\s+virus\s+scanning
.*?
virus\sfree\.
/imx, replacement)
text.gsub!(/^Communications\s+via\s+the\s+GSi\s+
.*?
legal\spurposes\.
/imx, replacement)
# http://www.whatdotheyknow.com/request/net_promoter_value_scores_for_bb
text.gsub!(/^http:\/\/www.bbc.co.uk
.*?
Further\s+communication\s+will\s+signify\s+your\s+consent\s+to\s+this\.
/imx, replacement)
# To end of message sections
# http://www.whatdotheyknow.com/request/123/response/192
# http://www.whatdotheyknow.com/request/235/response/513
# http://www.whatdotheyknow.com/request/445/response/743
original_message =
'(' + '''----* This is a copy of the message, including all the headers. ----*''' +
'|' + '''----*\s*Original Message\s*----*''' +
'|' + '''----*\s*Forwarded message.+----*''' +
'|' + '''----*\s*Forwarded by.+----*''' +
')'
# Could have a ^ at start here, but see messed up formatting here:
# http://www.whatdotheyknow.com/request/refuse_and_recycling_collection#incoming-842
text.gsub!(/(#{original_message}\n.*)$/mi, replacement)
# Some silly Microsoft XML gets into parts marked as plain text.
# e.g. http://www.whatdotheyknow.com/request/are_traffic_wardens_paid_commiss#incoming-401
# Don't replace with "replacement" as it's pretty messy
text.gsub!(/<\?xml:namespace[^>]*\/>/, " ")
return text
end
# Removes anything cached about the object in the database, and saves
def clear_in_database_caches!
self.cached_attachment_text_clipped = nil
self.cached_main_body_text_unfolded = nil
self.cached_main_body_text_folded = nil
self.save!
end
# Internal function to cache two sorts of main body text.
# Cached as loading raw_email can be quite huge, and need this for just
# search results
def _cache_main_body_text
text = self.get_main_body_text_internal
# Strip the uudecode parts from main text
# - this also effectively does a .dup as well, so text mods don't alter original
text = text.split(/^begin.+^`\n^end\n/m).join(" ")
if text.size > 1000000 # 1 MB ish
raise "main body text more than 1 MB, need to implement clipping like for attachment text, or there is some other MIME decoding problem or similar"
end
# apply masks for this message
apply_masks!(text, 'text/html')
# Remove existing quoted sections
folded_quoted_text = self.remove_lotus_quoting(text, 'FOLDED_QUOTED_SECTION')
folded_quoted_text = IncomingMessage.remove_quoted_sections(folded_quoted_text, "FOLDED_QUOTED_SECTION")
self.cached_main_body_text_unfolded = text
self.cached_main_body_text_folded = folded_quoted_text
self.save!
end
# Returns body text from main text part of email, converted to UTF-8, with uudecode removed,
# emails and privacy sensitive things remove, censored, and folded to remove excess quoted text
# (marked with FOLDED_QUOTED_SECTION)
# TODO: returns a .dup of the text, so calling functions can in place modify it
def get_main_body_text_folded
if self.cached_main_body_text_folded.nil?
self._cache_main_body_text
end
return self.cached_main_body_text_folded
end
def get_main_body_text_unfolded
if self.cached_main_body_text_unfolded.nil?
self._cache_main_body_text
end
return self.cached_main_body_text_unfolded
end
# Returns body text from main text part of email, converted to UTF-8
def get_main_body_text_internal
parse_raw_email!
main_part = get_main_body_text_part
return _convert_part_body_to_text(main_part)
end
# Given a main text part, converts it to text
def _convert_part_body_to_text(part)
if part.nil?
text = "[ Email has no body, please see attachments ]"
source_charset = "utf-8"
else
# by default, the body (coming from an foi_attachment) should have been converted to utf-8
text = part.body
source_charset = part.charset
if part.content_type == 'text/html'
# e.g. http://www.whatdotheyknow.com/request/35/response/177
# TODO: This is a bit of a hack as it is calling a
# convert to text routine. Could instead call a
# sanitize HTML one.
# If the text isn't UTF8, it means we had a problem
# converting it (invalid characters, etc), and we
# should instead tell elinks to respect the source
# charset
use_charset = "utf-8"
if String.method_defined?(:encode)
begin
text.encode('utf-8')
rescue Encoding::UndefinedConversionError, Encoding::InvalidByteSequenceError
use_charset = source_charset
end
else
begin
text = Iconv.conv('utf-8', 'utf-8', text)
rescue Iconv::IllegalSequence
use_charset = source_charset
end
end
text = MailHandler.get_attachment_text_one_file(part.content_type, text, use_charset)
end
end
# If text hasn't been converted, we sanitise it.
text = _sanitize_text(text)
# Fix DOS style linefeeds to Unix style ones (or other later regexps won't work)
text = text.gsub(/\r\n/, "\n")
# Compress extra spaces down to save space, and to stop regular expressions
# breaking in strange extreme cases. e.g. for
# http://www.whatdotheyknow.com/request/spending_on_consultants
text = text.gsub(/ +/, " ")
return text
end
def _sanitize_text(text)
if String.method_defined?(:encode)
begin
# Test if it's good UTF-8
text.encode('utf-8')
rescue Encoding::UndefinedConversionError, Encoding::InvalidByteSequenceError
source_charset = 'utf-8' if source_charset.nil?
# strip out anything that isn't UTF-8
begin
text = text.encode("utf-8", :invalid => :replace,
:undef => :replace,
:replace => "") +
_("\n\n[ {{site_name}} note: The above text was badly encoded, and has had strange characters removed. ]",
:site_name => MySociety::Config.get('SITE_NAME', 'Alaveteli'))
rescue Encoding::UndefinedConversionError, Encoding::InvalidByteSequenceError
if source_charset != "utf-8"
source_charset = "utf-8"
retry
end
end
end
else
begin
# Test if it's good UTF-8
text = Iconv.conv('utf-8', 'utf-8', text)
rescue Iconv::IllegalSequence
# Text looks like unlabelled nonsense,
# strip out anything that isn't UTF-8
begin
source_charset = 'utf-8' if source_charset.nil?
text = Iconv.conv('utf-8//IGNORE', source_charset, text) +
_("\n\n[ {{site_name}} note: The above text was badly encoded, and has had strange characters removed. ]",
:site_name => AlaveteliConfiguration::site_name)
rescue Iconv::InvalidEncoding, Iconv::IllegalSequence, Iconv::InvalidCharacter
if source_charset != "utf-8"
source_charset = "utf-8"
retry
end
end
end
end
text
end
# Returns part which contains main body text, or nil if there isn't one,
# from a set of foi_attachments. If the leaves parameter is empty or not
# supplied, uses its own foi_attachments.
def get_main_body_text_part(leaves=[])
leaves = self.foi_attachments if leaves.empty?
# Find first part which is text/plain or text/html
# (We have to include HTML, as increasingly there are mail clients that
# include no text alternative for the main part, and we don't want to
# instead use the first text attachment
# e.g. http://www.whatdotheyknow.com/request/list_of_public_authorties)
leaves.each do |p|
if p.content_type == 'text/plain' or p.content_type == 'text/html'
return p
end
end
# Otherwise first part which is any sort of text
leaves.each do |p|
if p.content_type.match(/^text/)
return p
end
end
# ... or if none, consider first part
p = leaves[0]
# if it is a known type then don't use it, return no body (nil)
if !p.nil? && AlaveteliFileTypes.mimetype_to_extension(p.content_type)
# this is guess of case where there are only attachments, no body text
# e.g. http://www.whatdotheyknow.com/request/cost_benefit_analysis_for_real_n
return nil
end
# otherwise return it assuming it is text (sometimes you get things
# like binary/octet-stream, or the like, which are really text - TODO: if
# you find an example, put URL here - perhaps we should be always returning
# nil in this case)
return p
end
# Returns attachments that are uuencoded in main body part
def _uudecode_and_save_attachments(text)
# Find any uudecoded things buried in it, yeuchly
uus = text.scan(/^begin.+^`\n^end\n/m)
attachments = []
for uu in uus
# Decode the string
content = nil
tempfile = Tempfile.new('foiuu')
tempfile.print uu
tempfile.flush
content = AlaveteliExternalCommand.run("uudecode", "-o", "/dev/stdout", tempfile.path)
tempfile.close
# Make attachment type from it, working out filename and mime type
filename = uu.match(/^begin\s+[0-9]+\s+(.*)$/)[1]
calc_mime = AlaveteliFileTypes.filename_and_content_to_mimetype(filename, content)
if calc_mime
calc_mime = MailHandler.normalise_content_type(calc_mime)
content_type = calc_mime
else
content_type = 'application/octet-stream'
end
hexdigest = Digest::MD5.hexdigest(content)
attachment = self.foi_attachments.find_or_create_by_hexdigest(hexdigest)
attachment.update_attributes(:filename => filename,
:content_type => content_type,
:body => content,
:display_size => "0K")
attachment.save!
attachments << attachment
end
return attachments
end
def get_attachments_for_display
parse_raw_email!
# return what user would consider attachments, i.e. not the main body
main_part = get_main_body_text_part
attachments = []
for attachment in self.foi_attachments
attachments << attachment if attachment != main_part
end
return attachments
end
def extract_attachments!
force = true
attachment_attributes = MailHandler.get_attachment_attributes(self.mail(force))
attachments = []
attachment_attributes.each do |attrs|
attachment = self.foi_attachments.find_or_create_by_hexdigest(attrs[:hexdigest])
attachment.update_attributes(attrs)
attachment.save!
attachments << attachment
end
# Reload to refresh newly created foi_attachments
self.reload
# get the main body part from the set of attachments we just created,
# not from the self.foi_attachments association - some of the total set
# of self.foi_attachments may now be obsolete. Sometimes (e.g. when
# parsing mail from Apple Mail) we can end up with less attachments
# because the hexdigest of an attachment is identical.
main_part = get_main_body_text_part(attachments)
# we don't use get_main_body_text_internal, as we want to avoid charset
# conversions, since /usr/bin/uudecode needs to deal with those.
# e.g. for https://secure.mysociety.org/admin/foi/request/show_raw_email/24550
if !main_part.nil?
uudecoded_attachments = _uudecode_and_save_attachments(main_part.body)
c = self.mail.count_first_uudecode_count
for uudecode_attachment in uudecoded_attachments
c += 1
uudecode_attachment.url_part_number = c
uudecode_attachment.save!
attachments << uudecode_attachment
end
end
attachment_ids = attachments.map{ |attachment| attachment.id }
# now get rid of any attachments we no longer have
FoiAttachment.destroy_all(["id NOT IN (?) AND incoming_message_id = ?",
attachment_ids, self.id])
end
# Returns body text as HTML with quotes flattened, and emails removed.
def get_body_for_html_display(collapse_quoted_sections = true)
# Find the body text and remove emails for privacy/anti-spam reasons
text = get_main_body_text_unfolded
folded_quoted_text = get_main_body_text_folded
# Remove quoted sections, adding HTML. TODO: The FOLDED_QUOTED_SECTION is
# a nasty hack so we can escape other HTML before adding the unfold
# links, without escaping them. Rather than using some proper parser
# making a tree structure (I don't know of one that is to hand, that
# works well in this kind of situation, such as with regexps).
if collapse_quoted_sections
text = folded_quoted_text
end
text = MySociety::Format.simplify_angle_bracketed_urls(text)
text = CGI.escapeHTML(text)
text = MySociety::Format.make_clickable(text, :contract => 1)
# add a helpful link to email addresses and mobile numbers removed
# by apply_masks!
email_pattern = Regexp.escape(_("email address"))
mobile_pattern = Regexp.escape(_("mobile number"))
text.gsub!(/\[(#{email_pattern}|#{mobile_pattern})\]/,
'[\1]')
if collapse_quoted_sections
text = text.gsub(/(\s*FOLDED_QUOTED_SECTION\s*)+/m, "FOLDED_QUOTED_SECTION")
text.strip!
# if there is nothing but quoted stuff, then show the subject
if text == "FOLDED_QUOTED_SECTION"
text = "[Subject only] " + CGI.escapeHTML(self.subject || '') + text
end
# and display link for quoted stuff
text = text.gsub(/FOLDED_QUOTED_SECTION/, "\n\n" + ''+_("show quoted sections")+'' + "\n\n")
else
if folded_quoted_text.include?('FOLDED_QUOTED_SECTION')
text = text + "\n\n" + ''+_("hide quoted sections")+''
end
end
text.strip!
text = text.gsub(/\n/, '
')
text = text.gsub(/(?:
\s*){2,}/, '
') # remove excess linebreaks that unnecessarily space it out
return text.html_safe
end
# Returns text of email for using in quoted section when replying
def get_body_for_quoting
# Get the body text with emails and quoted sections removed
text = get_main_body_text_folded
text.gsub!("FOLDED_QUOTED_SECTION", " ")
text.strip!
raise "internal error" if text.nil?
return text
end
MAX_ATTACHMENT_TEXT_CLIPPED = 1000000 # 1Mb ish
# Returns text version of attachment text
def get_attachment_text_full
text = self._get_attachment_text_internal
apply_masks!(text, 'text/html')
# This can be useful for memory debugging
#STDOUT.puts 'xxx '+ MySociety::DebugHelpers::allocated_string_size_around_gc
# Save clipped version for snippets
if self.cached_attachment_text_clipped.nil?
self.cached_attachment_text_clipped = text.mb_chars[0..MAX_ATTACHMENT_TEXT_CLIPPED]
self.save!
end
return text
end
# Returns a version reduced to a sensible maximum size - this
# is for performance reasons when showing snippets in search results.
def get_attachment_text_clipped
if self.cached_attachment_text_clipped.nil?
# As side effect, get_attachment_text_full makes snippet text
attachment_text = self.get_attachment_text_full
raise "internal error" if self.cached_attachment_text_clipped.nil?
end
return self.cached_attachment_text_clipped
end
def _extract_text
# Extract text from each attachment
self.get_attachments_for_display.reduce(''){ |memo, attachment|
memo += MailHandler.get_attachment_text_one_file(attachment.content_type,
attachment.body,
attachment.charset)
}
end
def _get_attachment_text_internal
text = self._extract_text
# Remove any bad characters
if String.method_defined?(:encode)
# handle "problematic" encoding
text.encode!('UTF-16', 'UTF-8', :invalid => :replace, :undef => :replace, :replace => '')
text.encode('UTF-8', 'UTF-16')
else
Iconv.conv('utf-8//IGNORE', 'utf-8', text)
end
end
# Returns text for indexing
def get_text_for_indexing_full
return get_body_for_quoting + "\n\n" + get_attachment_text_full
end
# Used for excerpts in search results, when loading full text would be too slow
def get_text_for_indexing_clipped
return get_body_for_quoting + "\n\n" + get_attachment_text_clipped
end
# Has message arrived "recently"?
def recently_arrived
(Time.now - self.created_at) <= 3.days
end
def fully_destroy
ActiveRecord::Base.transaction do
outgoing_message_followups.each do |outgoing_message_followup|
outgoing_message_followup.incoming_message_followup = nil
outgoing_message_followup.save!
end
info_request_events.each do |info_request_event|
info_request_event.track_things_sent_emails.each { |a| a.destroy }
info_request_event.user_info_request_sent_alerts.each { |a| a.destroy }
info_request_event.destroy
end
self.raw_email.destroy_file_representation!
self.destroy
end
end
# Search all info requests for
def IncomingMessage.find_all_unknown_mime_types
for incoming_message in IncomingMessage.find(:all)
for attachment in incoming_message.get_attachments_for_display
raise "internal error incoming_message " + incoming_message.id.to_s if attachment.content_type.nil?
if AlaveteliFileTypes.mimetype_to_extension(attachment.content_type).nil?
$stderr.puts "Unknown type for /request/" + incoming_message.info_request.id.to_s + "#incoming-"+incoming_message.id.to_s
$stderr.puts " " + attachment.filename.to_s + " " + attachment.content_type.to_s
end
end
end
return nil
end
# Returns space separated list of file extensions of attachments to this message. Defaults to
# the normal extension for known mime type, otherwise uses other extensions.
def get_present_file_extensions
ret = {}
for attachment in self.get_attachments_for_display
ext = AlaveteliFileTypes.mimetype_to_extension(attachment.content_type)
ext = File.extname(attachment.filename).gsub(/^[.]/, "") if ext.nil? && !attachment.filename.nil?
ret[ext] = 1 if !ext.nil?
end
return ret.keys.join(" ")
end
# Return space separated list of all file extensions known
def IncomingMessage.get_all_file_extensions
return AlaveteliFileTypes.all_extensions.join(" ")
end
def for_admin_column
self.class.content_columns.each do |column|
yield(column.human_name, self.send(column.name), column.type.to_s, column.name)
end
end
end