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Prevent new accounts from being created using the same underlying e-mail as a suspended account using extensions and period permutations. Stores e-mails as a SHA256 hash
45 lines
1.2 KiB
Ruby
45 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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class BlacklistedEmailValidator < ActiveModel::Validator
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def validate(user)
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return if user.valid_invitation? || user.email.blank?
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@email = user.email
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user.errors.add(:email, :blocked) if blocked_email_provider?
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user.errors.add(:email, :taken) if blocked_canonical_email?
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end
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private
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def blocked_email_provider?
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disallowed_through_email_domain_block? || disallowed_through_configuration? || not_allowed_through_configuration?
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end
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def blocked_canonical_email?
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CanonicalEmailBlock.block?(@email)
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end
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def disallowed_through_email_domain_block?
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EmailDomainBlock.block?(@email)
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end
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def not_allowed_through_configuration?
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return false if Rails.configuration.x.email_domains_whitelist.blank?
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domains = Rails.configuration.x.email_domains_whitelist.gsub('.', '\.')
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regexp = Regexp.new("@(.+\\.)?(#{domains})$", true)
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@email !~ regexp
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end
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def disallowed_through_configuration?
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return false if Rails.configuration.x.email_domains_blacklist.blank?
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domains = Rails.configuration.x.email_domains_blacklist.gsub('.', '\.')
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regexp = Regexp.new("@(.+\\.)?(#{domains})", true)
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regexp.match?(@email)
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end
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end
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