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Change domain blocks to automatically support subdomains (#11138)

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* Change domain blocks to automatically support subdomains

If a more authoritative domain is blocked (example.com), then the
same block will be applied to a subdomain (foo.example.com)

* Match subdomains of existing accounts when blocking/unblocking domains

* Improve code style
This commit is contained in:
Eugen Rochko 2019-06-22 00:13:10 +02:00 • committed by GitHub
parent 49ebda4d49
commit 707ddf7808
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17 changed files with 89 additions and 25 deletions
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33
app/models/domain_block.rb
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@ -24,14 +24,41 @@ class DomainBlock < ApplicationRecord
scope :matches_domain, ->(value) { where(arel_table[:domain].matches("%#{value}%")) }
def self.blocked?(domain)
where(domain: domain, severity: :suspend).exists?
class << self
def suspend?(domain)
!!rule_for(domain)&.suspend?
end
def silence?(domain)
!!rule_for(domain)&.silence?
end
def reject_media?(domain)
!!rule_for(domain)&.reject_media?
end
def reject_reports?(domain)
!!rule_for(domain)&.reject_reports?
end
alias blocked? suspend?
def rule_for(domain)
return if domain.blank?
uri = Addressable::URI.new.tap { |u| u.host = domain.gsub(/[\/]/, '') }
segments = uri.normalized_host.split('.')
variants = segments.map.with_index { |_, i| segments[i..-1].join('.') }
where(domain: variants[0..-2]).order(Arel.sql('char_length(domain) desc')).first
end
end
def stricter_than?(other_block)
return true if suspend?
return true if suspend?
return false if other_block.suspend? && (silence? || noop?)
return false if other_block.silence? && noop?
(reject_media || !other_block.reject_media) && (reject_reports || !other_block.reject_reports)
end