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gitlab-org--gitlab-foss/config/initializers/content_security_policy.rb

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Add support for Content-Security-Policy A nonce-based Content-Security-Policy thwarts XSS attacks by allowing inline JavaScript to execute if the script nonce matches the header value. Rails 5.2 supports nonce-based Content-Security-Policy headers, so provide configuration to enable this and make it work. To support this, we need to change all `:javascript` HAML filters to the following form: ``` = javascript_tag nonce: true do :plain ... ``` We use `%script` throughout our HAML to store JSON and other text, but since this doesn't execute, browsers don't appear to block this content from being used and require the nonce value to be present.
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# frozen_string_literal: true
csp_settings = Settings.gitlab.content_security_policy
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csp_settings['enabled'] = Gitlab::ContentSecurityPolicy::ConfigLoader.default_enabled if csp_settings['enabled'].nil?
csp_settings['report_only'] = false if csp_settings['report_only'].nil?
csp_settings['directives'] ||= {}
Add support for Content-Security-Policy A nonce-based Content-Security-Policy thwarts XSS attacks by allowing inline JavaScript to execute if the script nonce matches the header value. Rails 5.2 supports nonce-based Content-Security-Policy headers, so provide configuration to enable this and make it work. To support this, we need to change all `:javascript` HAML filters to the following form: ``` = javascript_tag nonce: true do :plain ... ``` We use `%script` throughout our HAML to store JSON and other text, but since this doesn't execute, browsers don't appear to block this content from being used and require the nonce value to be present.
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if csp_settings['enabled']
# See https://guides.rubyonrails.org/security.html#content-security-policy
Rails.application.config.content_security_policy do |policy|
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loader = ::Gitlab::ContentSecurityPolicy::ConfigLoader.new(csp_settings['directives'].to_h)
Add support for Content-Security-Policy A nonce-based Content-Security-Policy thwarts XSS attacks by allowing inline JavaScript to execute if the script nonce matches the header value. Rails 5.2 supports nonce-based Content-Security-Policy headers, so provide configuration to enable this and make it work. To support this, we need to change all `:javascript` HAML filters to the following form: ``` = javascript_tag nonce: true do :plain ... ``` We use `%script` throughout our HAML to store JSON and other text, but since this doesn't execute, browsers don't appear to block this content from being used and require the nonce value to be present.
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loader.load(policy)
end
Rails.application.config.content_security_policy_report_only = csp_settings['report_only']
Rails.application.config.content_security_policy_nonce_generator = ->(request) { SecureRandom.base64(16) }
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Rails.application.config.content_security_policy_nonce_directives = %w(script-src)
Add support for Content-Security-Policy A nonce-based Content-Security-Policy thwarts XSS attacks by allowing inline JavaScript to execute if the script nonce matches the header value. Rails 5.2 supports nonce-based Content-Security-Policy headers, so provide configuration to enable this and make it work. To support this, we need to change all `:javascript` HAML filters to the following form: ``` = javascript_tag nonce: true do :plain ... ``` We use `%script` throughout our HAML to store JSON and other text, but since this doesn't execute, browsers don't appear to block this content from being used and require the nonce value to be present.
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end
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