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我正在尝试从 AWS S3 在 heroku 上为我的 django 项目托管和提供 webfonts（特别是 fontawesome），但我很难克服可怕的firefox cross-domain font-loading issue。我已经尝试了所有记录在案的、公认的解决方案，但没有一个对我有用。

我经常看到的推荐解决方案是在我的 S3 存储桶上编辑 CORS 配置：

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    <CORSRule>
        <AllowedOrigin>https://myapp.herokuapp.com</AllowedOrigin>
        <AllowedOrigin>https://www.myapp.herokuapp.com</AllowedOrigin>
        <AllowedOrigin>https://myapp.com</AllowedOrigin>
        <AllowedOrigin>https://www.myapp.com</AllowedOrigin>
        <AllowedMethod>GET</AllowedMethod>
        <MaxAgeSeconds>3000</MaxAgeSeconds>
        <AllowedHeader>Authorization</AllowedHeader>
   </CORSRule>
</CORSConfiguration>

我已经尝试了这些设置的不同变体，Firefox 仍然给我一个来自https://www.myapp.com的 HTTP 403 禁止：

Request URL: https://my_bucket.s3.amazonaws.com/css/fontawesome-webfont-webfont.ttf
Request Method: GET
Status Code: HTTP/1.1 403 Forbidden

通过该 HTTP 请求，我在响应标头中得到“Access-Control-Allow-Credentials：true”。

我需要为 Firefox 声明另一个 CORS 规则以接受来自 S3 的字体吗？当我 curl font-awesome 时，我没有得到/看到任何有助于解决这个问题的东西：

> https://s3.amazonaws.com/my_bucket/font/fontawesome-webfont.eot
* About to connect() to s3.amazonaws.com port 443 (#0)
*   Trying xxx.xx.xx.xxxx... connected
* Connected to s3.amazonaws.com (xxx.xx.xx.xxx) port 443 (#0)
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS handshake, Server finished (14):
* SSLv3, TLS handshake, Client key exchange (16):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSL connection using DES-CBC3-SHA
* Server certificate:
*       subject: C=US; ST=Washington; L=Seattle; O=Amazon.com Inc.; CN=s3.amazonaws.com
*       start date: 2010-10-08 00:00:00 GMT
*       expire date: 2013-10-07 23:59:59 GMT
*          common name: s3.amazonaws.com (matched)
*       issuer: C=US; O=VeriSign, Inc.; OU=VeriSign Trust Network; OU=Terms of use at https://www.verisign.com/rpa (c)09; CN=VeriSign Class 3 Secure Server CA - G2
*       SSL certificate verify ok.
> GET /my_bucket/font/fontawesome-webfont.eot HTTP/1.1
> User-Agent: curl/7.21.4 (universal-apple-darwin11.0) libcurl/7.21.4 OpenSSL/0.9.8r zlib/1.2.5
> Host: s3.amazonaws.com
> Accept: */*
> Origin: https://www.myapp.com
>
< HTTP/1.1 200 OK
< x-amz-id-2: XxMCWhqMsTGMMmAQnSHT/+RO7aluQSRyZ5wTAseMKM5cpavE+NkBQCuD8ykiIIDE
< x-amz-request-id: 90FF2C1C85254815
< Date: Mon, 22 Jul 2013 01:54:53 GMT
< Access-Control-Allow-Origin: https://www.myapp.com
< Access-Control-Allow-Methods: GET
< Access-Control-Max-Age: 3000
< Access-Control-Allow-Credentials: true
< Vary: Origin, Access-Control-Request-Headers, Access-Control-Request-Method
< Last-Modified: Mon, 22 Jul 2013 01:44:31 GMT
< ETag: "455808250694e5760bd92b3ce1f070b6"
< Accept-Ranges: bytes
< Content-Type: application/octet-stream
< Content-Length: 25395
< Server: AmazonS3
<
3cOb?LP&?S~FontAwesomeRegular"Version 1.00 2012&FontAwesome RegularBSGPɴbGbKV?????Y?D

是否有另一种设置 Access-Control-Allow-Origin 的方法可以使其正常工作？

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1 回答 1

3

如果您在存储桶策略中限制对特定 HTTP 引用者的访问，请将您的存储桶 URL 也添加到引用者列表中。例如：

"Condition": {
    "StringLike": {
        "aws:Referer": [
            "http://my_bucket.s3.amazonaws.com/*",
            "https://my_bucket.s3.amazonaws.com/*",
            "http://www.example.com/*",
            "https://www.example.com/*",
        ]
    }
}

检查 Firefox 中的响应标头。原来字体的引用者是您的 CSS 文件，它托管在 s3 存储桶上，而不是您的域。

于 2015-07-02T16:16:49.883 回答