86 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			86 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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module Gitlab
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  module Routing
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    extend ActiveSupport::Concern
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    class LegacyRedirector
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      # @params path_type [symbol] type of path to do "-" redirection
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      # https://gitlab.com/gitlab-org/gitlab/-/issues/16854
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      def initialize(path_type)
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        @path_type = path_type
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      end
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      def call(_params, request)
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        ensure_valid_uri!(request)
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        # Only replace the last occurrence of `path`.
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        #
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        # `request.fullpath` includes the querystring
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        new_path = request.path.sub(%r{/#{@path_type}(/*)(?!.*#{@path_type})}, "/-/#{@path_type}\\1")
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        new_path = "#{new_path}?#{request.query_string}" if request.query_string.present?
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        new_path
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      end
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      private
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      def ensure_valid_uri!(request)
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        URI.parse(request.path)
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      rescue URI::InvalidURIError => e
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        # If url is invalid, raise custom error,
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        # which can be ignored by monitoring tools.
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        raise ActionController::RoutingError.new(e.message)
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      end
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    end
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    mattr_accessor :_includers
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    self._includers = []
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    included do
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      Gitlab::Routing.includes_helpers(self)
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      include Gitlab::Routing.url_helpers
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    end
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    def self.includes_helpers(klass)
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      self._includers << klass
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    end
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    def self.add_helpers(mod)
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      url_helpers.include mod
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      url_helpers.extend mod
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      GitlabRoutingHelper.include mod
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      GitlabRoutingHelper.extend mod
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      app_url_helpers = Gitlab::Application.routes.named_routes.url_helpers_module
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      app_url_helpers.include mod
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      app_url_helpers.extend mod
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      _includers.each do |klass|
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        klass.include mod
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      end
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    end
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    # Returns the URL helpers Module.
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    #
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    # This method caches the output as Rails' "url_helpers" method creates an
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    # anonymous module every time it's called.
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    #
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    # Returns a Module.
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    def self.url_helpers
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      @url_helpers ||= Gitlab::Application.routes.url_helpers
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    end
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    def self.redirect_legacy_paths(router, *paths)
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      paths.each do |path|
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        router.match "/#{path}(/*rest)",
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                     via: [:get, :post, :patch, :delete],
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                     to: router.redirect(LegacyRedirector.new(path)),
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                     as: "legacy_#{path}_redirect"
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      end
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    end
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  end
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end
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