mirror of
https://github.com/discourse/discourse.git
synced 2024-11-22 00:47:46 -06:00
59 lines
1.9 KiB
Ruby
59 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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class Discourse::Cors
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ORIGINS_ENV = "Discourse_Cors_Origins"
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def initialize(app, options = nil)
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@app = app
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if GlobalSetting.enable_cors && GlobalSetting.cors_origin.present?
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@global_origins = GlobalSetting.cors_origin.split(",").map { |x| x.strip.chomp("/") }
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end
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end
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def call(env)
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return @app.call(env) if !GlobalSetting.enable_cors && !GlobalSetting.cdn_url
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cors_origins = @global_origins || []
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cors_origins += SiteSetting.cors_origins.split("|") if SiteSetting.cors_origins.present?
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cors_origins = cors_origins.presence
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if env["REQUEST_METHOD"] == ("OPTIONS") && env["HTTP_ACCESS_CONTROL_REQUEST_METHOD"]
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return 200, Discourse::Cors.apply_headers(cors_origins, env, {}), []
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end
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env[Discourse::Cors::ORIGINS_ENV] = cors_origins if cors_origins
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status, headers, body = @app.call(env)
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headers ||= {}
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Discourse::Cors.apply_headers(cors_origins, env, headers)
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[status, headers, body]
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end
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def self.apply_headers(cors_origins, env, headers)
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request_method = env["REQUEST_METHOD"]
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if headers["Access-Control-Allow-Origin"]
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# Already configured. Probably by ApplicationController#apply_cdn_headers
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elsif cors_origins
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origin = nil
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if origin = env["HTTP_ORIGIN"]
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origin = nil if cors_origins.exclude?(origin)
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end
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headers["Access-Control-Allow-Origin"] = origin || cors_origins[0]
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headers[
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"Access-Control-Allow-Headers"
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] = "Content-Type, Cache-Control, X-Requested-With, X-CSRF-Token, Discourse-Present, User-Api-Key, User-Api-Client-Id, Authorization"
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headers["Access-Control-Allow-Credentials"] = "true"
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headers["Access-Control-Allow-Methods"] = "POST, PUT, GET, OPTIONS, DELETE"
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headers["Access-Control-Max-Age"] = "7200"
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end
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headers
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end
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end
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Rails.configuration.middleware.insert_before ActionDispatch::Flash, Discourse::Cors
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