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69 lines
2.5 KiB
69 lines
2.5 KiB
#-- copyright
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# OpenProject is an open source project management software.
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# Copyright (C) 2012-2023 the OpenProject GmbH
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2013 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See COPYRIGHT and LICENSE files for more details.
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#++
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# Please see https://w3c.github.io/webappsec-secure-contexts/
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# for a definition of "secure contexts".
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# Basically, a host has to have either a HTTPS scheme or be
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# localhost to provide a secure context.
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class SecureContextUriValidator < ActiveModel::EachValidator
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def validate_each(contract, attribute, value)
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begin
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uri = URI.parse(value)
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rescue StandardError
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contract.errors.add(attribute, :invalid_url)
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return
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end
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# The URI could be parsable but not contain a host name
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if uri.host.blank?
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contract.errors.add(attribute, :invalid_url)
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return
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end
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unless self.class.secure_context_uri?(uri)
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contract.errors.add(attribute, :url_not_secure_context)
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end
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end
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def self.secure_context_uri?(uri)
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return true if uri.scheme == 'https' # https is always safe
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return true if uri.host == 'localhost' # Simple localhost
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return true if uri.host =~ /\.localhost\.?$/ # i.e. 'foo.localhost' or 'foo.localhost.'
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# Check for loopback interface. The constructor can throw an exception for non IP addresses.
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# Those are invalid. And if the host is an IP address then we can check if it is loopback.
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begin
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return true if IPAddr.new(uri.host).loopback?
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rescue StandardError
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return false
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end
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# uri.host is an IP but not a loopback
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false
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end
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end
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