Strelka-CORS

Strelka::App plugin module for Cross-Origin Resource Sharing (CORS)

class MyService < Strelka::App
    plugins :cors

    allow_origins '*'

end # MyService

Resources:

Public Class Methods

anchor

included( object )

Extension callback – extend the HTTPRequest class with Auth support when this plugin is loaded.

# File lib/strelka/app/cors.rb, line 59
def self::included( object )
        self.log.debug "Extending Request with CORS mixin"
        Strelka::HTTPRequest.class_eval { include Strelka::HTTPRequest::CORS }
        Strelka::HTTPResponse.class_eval { include Strelka::HTTPResponse::CORS }
        super
end

Public Instance Methods

anchor

handle_preflight_request( request )

Handle a CORS preflight request.

# File lib/strelka/app/cors.rb, line 87
def handle_preflight_request( request )
        path = request.app_path
        response = request.response

        self.class.access_controls.each do |pattern, options|
                self.log.debug "Applying access controls: %p (%p)" % [ pattern, options ]

                # TODO: Skip requests that don't match options? E.g.,
                #   next unless options[:allowed_methods].include?( request.verb )

                options[:block].call( request, response ) if
                        options[:block] && ( !pattern || path.match(pattern) )
        end

        response.add_cors_headers
        response.status = 204

        return response
end

anchor

handle_request( request )

Extend handled requests with CORS stuff.

# File lib/strelka/app/cors.rb, line 68
def handle_request( request )
        if request.origin
                self.log.info "Request has an Origin (%p): applying CORS" % [ request.origin ]
                response = if request.is_preflight?
                                self.log.debug "Preflight request for %s" % [ request.uri ]
                                self.handle_preflight_request( request )
                        else
                                request.response.add_cors_headers
                                super
                        end

                return response
        else
                super
        end
end