DISCOURSE_CDN_URL 导致内容安全策略违规？

xrav3nz · 2020 年2 月 6 日 23:11

所以我们在 CSP 中有如下配置：

https://abedmulti-92e2.kxcdn.com/uploads/assets/ 
https://abedmulti-92e2.kxcdn.com/uploads/brotli_asset/
# 即 DISCOURSE_S3_CDN_URL + /brotli_asset/

但实际地址是：

https://lcsupport-92e2.kxcdn.com/brotli_asset/preload-store-d32dcf974dddcac742f8a7a6aa7fcd686185920b201029d0ecb2b85527ef9034.js
# 即 DISCOURSE_CDN_URL + /brotli_asset/...

lib/content_security_policy/default.rb

49843f327


      
            # [dir, can_use_s3_cdn, can_use_cdn]
            ['/assets/',             true, true],
            ['/brotli_asset/',       true, true],
            ['/extra-locales/',      false, false],
            ['/highlight-js/',       false, true],
            ['/javascripts/',        false, true],
            ['/plugins/',            false, true],
            ['/theme-javascripts/',  false, true],
            ['/svg-sprite/',         false, true],
          ]
          
          def script_assets(base = base_url, s3_cdn = GlobalSetting.s3_cdn_url, cdn = GlobalSetting.cdn_url)
            SCRIPT_ASSET_DIRECTORIES.map do |dir, can_use_s3_cdn, can_use_cdn|
              if can_use_s3_cdn && s3_cdn
                s3_cdn + dir
              elsif can_use_cdn && cdn
                cdn + dir
              else
                base + dir
              end

当可用时，我们优先使用 DISCOURSE_S3_CDN_URL 作为资源地址。这与 CDN 资源 URL 生成逻辑一致。

@pfaffman 您的站点中 GlobalSetting.use_s3? 是否返回 true？

我在想是否需要在其中增加一个 GlobalSetting.use_s3? 的检查。拥有 GlobalSetting.s3_cdn_url 是否一定意味着 GlobalSetting.use_s3? 为真？我现在对资源生成和 S3 CDN 这块有点模糊了能否请更熟悉这块的同事也帮忙看一下？谢谢！

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DISCOURSE_CDN_URL 导致内容安全策略违规？

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