37 lines
1.1 KiB
Ruby
37 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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require 'content_security_policy'
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class ContentSecurityPolicy
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class Middleware
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def initialize(app)
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@app = app
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end
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def call(env)
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request = Rack::Request.new(env)
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_, headers, _ = response = @app.call(env)
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return response unless html_response?(headers)
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# The EnforceHostname middleware ensures request.host_with_port can be trusted
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protocol = (SiteSetting.force_https || request.ssl?) ? "https://" : "http://"
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base_url = protocol + request.host_with_port + Discourse.base_path
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theme_id = env[:resolved_theme_id]
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headers['Content-Security-Policy'] = policy(theme_id, base_url: base_url, path_info: env["PATH_INFO"]) if SiteSetting.content_security_policy
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headers['Content-Security-Policy-Report-Only'] = policy(theme_id, base_url: base_url, path_info: env["PATH_INFO"]) if SiteSetting.content_security_policy_report_only
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response
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end
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private
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delegate :policy, to: :ContentSecurityPolicy
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def html_response?(headers)
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headers['Content-Type'] && headers['Content-Type'] =~ /html/
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end
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end
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end
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