Jeremy Daer
6006491ab4
Default to a very narrow policy since there are no CDNs or third-party resources to contend with. Configurable via: - config.x.content_security_policy.* for fizzy-saas gem overrides - DISABLE_CSP to skip entirely - CSP_REPORT_ONLY to enable report-only mode - CSP_REPORT_URI for violation reporting
35 lines
1.3 KiB
Ruby
35 lines
1.3 KiB
Ruby
# Be sure to restart your server when you modify this file.
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# Define an application-wide Content Security Policy.
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# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
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Rails.application.configure do
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# Configure from environment variables (fizzy-saas can override by setting config.x values first)
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config.x.content_security_policy.report_uri ||= ENV["CSP_REPORT_URI"]
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config.x.content_security_policy.report_only ||= ENV["CSP_REPORT_ONLY"] == "true"
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# Generate nonces for importmap and inline scripts
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config.content_security_policy_nonce_generator = ->(request) { SecureRandom.base64(16) }
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config.content_security_policy_nonce_directives = %w[ script-src ]
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config.content_security_policy do |policy|
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policy.script_src :self
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policy.style_src :self, :unsafe_inline
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policy.img_src :self, "blob:", "data:", "https:"
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policy.font_src :self
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policy.object_src :none
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policy.base_uri :none
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policy.form_action :self
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policy.frame_ancestors :self
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# Specify URI for violation reports (e.g., Sentry CSP endpoint)
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if report_uri = config.x.content_security_policy.report_uri
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policy.report_uri report_uri
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end
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end
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# Report violations without enforcing the policy.
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config.content_security_policy_report_only = config.x.content_security_policy.report_only
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end unless ENV["DISABLE_CSP"]
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