mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 21:57:36 +08:00
3b13f1146b
Currently the Message-IDs we send out for outbound email are not unique; for a post they look like: topic/TOPIC_ID/POST_ID@HOST And for a topic they look like: topic/TOPIC_ID@HOST This commit changes the outbound Message-IDs to also have a random suffix before the host, so the new format is like this: topic/TOPIC_ID/POST_ID.RANDOM_SUFFIX@HOST Or: topic/TOPIC_ID.RANDOM_SUFFIX@HOST This should help with email deliverability. This change is backwards-compatible, the old Message-ID format will still be recognized in the mail receiver flow, so people will still be able to reply using Message-IDs, In-Reply-To, and References headers that have already been sent. This commit also refactors Message-ID related logic to a central location, and adds judicious amounts of tests and documentation.
67 lines
1.3 KiB
Ruby
67 lines
1.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'mail'
|
|
|
|
module Email
|
|
def self.is_valid?(email)
|
|
return false unless String === email
|
|
!!(EmailValidator.email_regex =~ email)
|
|
end
|
|
|
|
def self.downcase(email)
|
|
return email unless Email.is_valid?(email)
|
|
email.downcase
|
|
end
|
|
|
|
def self.obfuscate(email)
|
|
return email if !Email.is_valid?(email)
|
|
|
|
first, _, last = email.rpartition('@')
|
|
|
|
# Obfuscate each last part, except tld
|
|
last = last.split('.')
|
|
tld = last.pop
|
|
last.map! { |part| obfuscate_part(part) }
|
|
last << tld
|
|
|
|
"#{obfuscate_part(first)}@#{last.join('.')}"
|
|
end
|
|
|
|
def self.cleanup_alias(name)
|
|
name ? name.gsub(/[:<>,"]/, '') : name
|
|
end
|
|
|
|
def self.extract_parts(raw)
|
|
mail = Mail.new(raw)
|
|
text = nil
|
|
html = nil
|
|
|
|
if mail.multipart?
|
|
text = mail.text_part
|
|
html = mail.html_part
|
|
elsif mail.content_type.to_s["text/html"]
|
|
html = mail
|
|
else
|
|
text = mail
|
|
end
|
|
|
|
[text&.decoded, html&.decoded]
|
|
end
|
|
|
|
def self.site_title
|
|
SiteSetting.email_site_title.presence || SiteSetting.title
|
|
end
|
|
|
|
private
|
|
|
|
def self.obfuscate_part(part)
|
|
if part.size < 3
|
|
"*" * part.size
|
|
elsif part.size < 5
|
|
part[0] + "*" * (part.size - 1)
|
|
else
|
|
part[0] + "*" * (part.size - 2) + part[-1]
|
|
end
|
|
end
|
|
end
|