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FEATURE: add setting to show content of forwarded emails in topics (#7935)

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This commit is contained in:
Leo McArdle 2019-08-07 11:32:19 +01:00 committed by Régis Hanol
parent 5d72561f4f
commit 6296ae3d31
5 changed files with 165 additions and 34 deletions
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2
config/locales/server.en.yml
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@ -1811,7 +1811,7 @@ en:
attachment_content_type_blacklist: "List of keywords used to blacklist attachments based on the content type."
attachment_filename_blacklist: "List of keywords used to blacklist attachments based on the filename."
enable_forwarded_emails: "[BETA] Allow users to create a topic by forwarding an email in."
forwarded_emails_behaviour: "How to treat a forwarded email to Discourse"
always_show_trimmed_content: "Always show trimmed part of incoming emails. WARNING: might reveal email addresses."
private_email: "Don't include content from posts or topics in email title or email body. NOTE: also disables digest emails."
email_total_attachment_size_limit_kb: "Max total size of files attached to outgoing emails. Set to 0 to disable sending of attachments."

8
config/site_settings.yml
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@ -1022,7 +1022,13 @@ email:
type: list
default: "smime.p7s|signature.asc|winmail.dat"
list_type: compact
enable_forwarded_emails: false
forwarded_emails_behaviour:
type: enum
default: hide
choices:
- hide
- quote
- create_replies
always_show_trimmed_content: false
private_email: false
email_custom_template:

35
db/migrate/20190724162522_migrate_forwarded_emails_behaviour_site_settings.rb Normal file
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@ -0,0 +1,35 @@
# frozen_string_literal: true
class MigrateForwardedEmailsBehaviourSiteSettings < ActiveRecord::Migration[5.2]
def up
execute <<~SQL
UPDATE site_settings
SET name = 'forwarded_emails_behaviour',
data_type = 7,
value = 'create_replies'
WHERE name = 'enable_forwarded_emails' AND value = 't';
SQL
execute <<~SQL
DELETE
FROM site_settings
WHERE name = 'enable_forwarded_emails';
SQL
end
def down
execute <<~SQL
UPDATE site_settings
SET name = 'enable_forwarded_emails',
data_type = 5,
value = 't'
WHERE name = 'forwarded_emails_behaviour' AND value = 'create_replies';
SQL
execute <<~SQL
DELETE
FROM site_settings
WHERE name = 'forwarded_emails_behaviour';
SQL
end
end

65
lib/email/receiver.rb
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@ -660,7 +660,7 @@ module Email
end
def process_destination(destination, user, body, elided, hidden_reason_id)
return if SiteSetting.enable_forwarded_emails &&
return if SiteSetting.forwarded_emails_behaviour != "hide" &&
has_been_forwarded? &&
process_forwarded_email(destination, user)
@ -800,19 +800,22 @@ module Email
def process_forwarded_email(destination, user)
user ||= stage_from_user
embedded = Mail.new(embedded_email_raw)
email, display_name = parse_from_field(embedded)
return false if email.blank? || !email["@"]
raw = try_to_encode(embedded.decoded, "UTF-8").presence || embedded.to_s
title = embedded.subject.presence || subject
case SiteSetting.forwarded_emails_behaviour
when "create_replies"
forwarded_email_create_replies(destination, user)
when "quote"
forwarded_email_quote_forwarded(destination, user)
else
false
end
end
def forwarded_email_create_topic(destination: , user: , raw: , title: , date: nil, embedded_user: nil)
case destination[:type]
when :group
group = destination[:obj]
embedded_user = find_or_create_user(email, display_name)
post = create_topic(user: embedded_user,
topic_user = embedded_user&.call || user
create_topic(user: topic_user,
raw: raw,
title: title,
archetype: Archetype.private_message,
@ -820,7 +823,7 @@ module Email
target_group_names: [group.name],
is_group_message: true,
skip_validations: true,
created_at: embedded.date)
created_at: date)
when :category
category = destination[:obj]
@ -828,16 +831,31 @@ module Email
return false if user.staged? && !category.email_in_allow_strangers
return false if !user.has_trust_level?(SiteSetting.email_in_min_trust)
embedded_user = find_or_create_user(email, display_name)
post = create_topic(user: embedded_user,
topic_user = embedded_user&.call || user
create_topic(user: topic_user,
raw: raw,
title: title,
category: category.id,
skip_validations: embedded_user.staged?,
created_at: embedded.date)
skip_validations: topic_user.staged?,
created_at: date)
else
return false
false
end
end
def forwarded_email_create_replies(destination, user)
embedded = Mail.new(embedded_email_raw)
email, display_name = parse_from_field(embedded)
return false if email.blank? || !email["@"]
post = forwarded_email_create_topic(destination: destination,
user: user,
raw: try_to_encode(embedded.decoded, "UTF-8").presence || embedded.to_s,
title: embedded.subject.presence || subject,
date: embedded.date,
embedded_user: lambda { find_or_create_user(email, display_name) })
return false unless post
if post&.topic
# mark post as seen for the forwarder
@ -846,7 +864,7 @@ module Email
# create reply when available
if @before_embedded.present?
post_type = Post.types[:regular]
post_type = Post.types[:whisper] if post.topic.private_message? && group.usernames[user.username]
post_type = Post.types[:whisper] if post.topic.private_message? && destination[:obj].usernames[user.username]
create_reply(user: user,
raw: @before_embedded,
@ -860,6 +878,19 @@ module Email
true
end
def forwarded_email_quote_forwarded(destination, user)
embedded = embedded_email_raw
raw = <<~EOF
#{@before_embedded}
[quote]
#{PlainTextToMarkdown.new(embedded).to_markdown}
[/quote]
EOF
return true if forwarded_email_create_topic(destination: destination, user: user, raw: raw, title: subject)
end
def self.reply_by_email_address_regex(extract_reply_key = true, include_verp = false)
reply_addresses = [SiteSetting.reply_by_email_address]
reply_addresses << (SiteSetting.alternative_reply_by_email_addresses.presence || "").split("|")

69
spec/components/email/receiver_spec.rb
View File

@ -708,6 +708,41 @@ describe Email::Receiver do
end
shared_examples "creates topic with forwarded message as quote" do |destination, address|
it "creates topic with forwarded message as quote" do
expect { process(:forwarded_email_1) }.to change(Topic, :count)
topic = Topic.last
if destination == :category
expect(topic.category).to eq(Category.where(email_in: address).first)
else
expect(topic.archetype).to eq(Archetype.private_message)
expect(topic.allowed_groups).to eq(Group.where(incoming_email: address))
end
post = Post.last
expect(post.user.email).to eq("ba@bar.com")
expect(post.raw).to eq(<<~EOF.chomp
@team, can you have a look at this email below?
[quote]
From: Some One &lt;some@one\\.com&gt;
To: Ba Bar &lt;ba@bar\\.com&gt;
Date: Mon, 1 Dec 2016 00:13:37 \\+0100
Subject: Discoursing much?
Hello Ba Bar,
Discoursing much today?
XoXo
[/quote]
EOF
)
end
end
context "new message to a group" do
fab!(:group) { Fabricate(:group, incoming_email: "team@bar.com|meat@bar.com") }
@ -818,10 +853,10 @@ describe Email::Receiver do
expect(user.user_option.email_messages_level).to eq(UserOption.email_level_types[:always])
end
context "with forwarded emails enabled" do
context "with forwarded emails behaviour set to create replies" do
before do
Fabricate(:group, incoming_email: "some_group@bar.com")
SiteSetting.enable_forwarded_emails = true
SiteSetting.forwarded_emails_behaviour = "create_replies"
end
it "handles forwarded emails" do
@ -842,7 +877,7 @@ describe Email::Receiver do
group.add(Fabricate(:user, email: "ba@bar.com"))
group.save
SiteSetting.enable_forwarded_emails = true
SiteSetting.forwarded_emails_behaviour = "create_replies"
expect { process(:forwarded_email_2) }.to change(Topic, :count)
forwarded_post, last_post = *Post.last(2)
@ -863,6 +898,14 @@ describe Email::Receiver do
end
context "with forwarded emails behaviour set to quote" do
before do
SiteSetting.forwarded_emails_behaviour = "quote"
end
include_examples "creates topic with forwarded message as quote", :group, "team@bar.com|meat@bar.com"
end
context "when message sent to a group has no key and find_related_post_with_key is enabled" do
let!(:topic) do
process(:email_reply_1)
@ -1202,6 +1245,22 @@ describe Email::Receiver do
include_examples "does not create staged users", :no_date, Email::Receiver::InvalidPost
end
context "with forwarded emails behaviour set to quote" do
before do
SiteSetting.forwarded_emails_behaviour = "quote"
end
context "with a category which allows strangers" do
fab!(:category) { Fabricate(:category, email_in: "team@bar.com", email_in_allow_strangers: true) }
include_examples "creates topic with forwarded message as quote", :category, "team@bar.com"
end
context "with a category which doesn't allow strangers" do
fab!(:category) { Fabricate(:category, email_in: "team@bar.com", email_in_allow_strangers: false) }
include_examples "cleans up staged users", :forwarded_email_1, Email::Receiver::StrangersNotAllowedError
end
end
end
context "email is a reply" do
@ -1220,9 +1279,9 @@ describe Email::Receiver do
include_examples "does not create staged users", :reply_user_not_matching, Email::Receiver::ReplyUserNotMatchingError
end
context "when forwarded emails are enabled" do
context "with forwarded emails behaviour set to create replies" do
before do
SiteSetting.enable_forwarded_emails = true
SiteSetting.forwarded_emails_behaviour = "create_replies"
end
context "when a reply contains a forwareded email" do