46 lines
1.2 KiB
Ruby
46 lines
1.2 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 if headers["Content-Security-Policy"].present?
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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(
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theme_id,
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base_url: base_url,
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path_info: env["PATH_INFO"],
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) if SiteSetting.content_security_policy
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headers["Content-Security-Policy-Report-Only"] = policy(
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theme_id,
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base_url: base_url,
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path_info: env["PATH_INFO"],
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) 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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