使用 Nginx 作为 Google 云存储签名 URL 的代理

Question

我正在尝试使用 Nginx 作为 Google Cloud Storage 签名 URL 的代理，用于上传和下载。

我试图实现的结果将以这样的方式工作：所有对 Nginx 服务器的请求都将转发到 Google Cloud Storage，并且查询参数完好无损。

所以，假设我的 Nginx 服务器在

https://www.noman.me

可用。

收到请求

https://noman.me/bucket-name/cat.jpeg?X-Goog-Algorithm= GOOG4-RSA-SHA256&X-Goog-Credential=example%40example-project.iam.gserviceaccount .com%2F20181026%2Fus-central1%2Fstorage%2Fgoog4_request&X-Goog-Date=20181026T18 1309Z&X-Goog-Expires=900&X-Goog-SignedHeaders=host&X-Goog-Signature=247a2aa45f16 9edf4d187d54e7cc46e4731b1e6273242c4f4c39a1d2507a0e58706e25e3a85a7dbb891d62afa849 6def8e260c1db863d9ace85ff0a184b894b117fe46d1225c82f2aa19efd52cf21d3e2022b3b868dc c1aca2741951ed5bf3bb25a34f5e9316a2841e8ff4c530b22ceaa1c5ce09c7cbb5732631510c2058 0e61723f5594de3aea497f195456a2ff2bdd0d13bad47289d8611b6f9cfeef0c46c91a455b94e90a 66924f722292d21e24d31dcfb38ce0c0f353ffa5a9756fc2a9f2b40bc2113206a81e324fc4fd6823 a29163fa845c8ae7eca1fcf6e5bb48b3200983c56c5ca81fffb151cca7402beddfc4a76b13344703 2ea7abedc098d2eb14a7

。

请求被转发到

https://storage.googleapis.com/bucket-name/cat.jpeg?X-Goog-Algorithm= GOOG4-RSA-SHA256&X-Goog-Credential=example%40example-project.iam.gserviceaccount .com%2F20181026%2Fus-central1%2Fstorage%2Fgoog4_request&X-Goog-Date=20181026T18 1309Z&X-Goog-Expires=900&X-Goog-SignedHeaders=host&X-Goog-Signature=247a2aa45f16 9edf4d187d54e7cc46e4731b1e6273242c4f4c39a1d2507a0e58706e25e3a85a7dbb891d62afa849 6def8e260c1db863d9ace85ff0a184b894b117fe46d1225c82f2aa19efd52cf21d3e2022b3b868dc c1aca2741951ed5bf3bb25a34f5e9316a2841e8ff4c530b22ceaa1c5ce09c7cbb5732631510c2058 0e61723f5594de3aea497f195456a2ff2bdd0d13bad47289d8611b6f9cfeef0c46c91a455b94e90a 66924f722292d21e24d31dcfb38ce0c0f353ffa5a9756fc2a9f2b40bc2113206a81e324fc4fd6823 a29163fa845c8ae7eca1fcf6e5bb48b3200983c56c5ca81fffb151cca7402beddfc4a76b13344703 2ea7abedc098d2eb14a7

，这意味着整个 URL 保持不变，但仅更改了域名。

我还希望它能够通过 Nginx 将来自 Google 的响应转发到客户端。

到目前为止，这是我到达的配置，但它似乎不起作用。

server {
  listen 80;
  server_name noman.me;

  access_log /var/log/nginx/front-access.log;
  error_log /var/log/nginx/front-error.log;

  client_max_body_size 100M;

  location / {
    proxy_pass https://storage.googleapis.com/bucket-name/$uri?$query_string;
    proxy_set_header Host $host;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    # proxy_pass http://127.0.0.1:3000;
    # proxy_pass http://172.21.0.2:8080;
    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;

    if ($request_method = 'OPTIONS') {
      add_header 'Access-Control-Allow-Origin' '*';
      add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, PATCH, OPTIONS';
      #
      # Custom headers and headers various browsers *should* be OK with but aren't
      #
      add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
      #
      # Tell client that this pre-flight info is valid for 20 days
      #
      add_header 'Access-Control-Max-Age' 1728000;
      add_header 'Content-Type' 'text/plain; charset=utf-8';
      add_header 'Content-Length' 0;
      return 204;
    }

    if ($request_method = 'POST') {
      add_header 'Access-Control-Allow-Origin' '*' always;
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
      add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
      add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
    }

    if ($request_method = 'PUT') {
      add_header 'Access-Control-Allow-Origin' '*' always;
      add_header 'Access-Control-Allow-Methods' 'GET, PUT, OPTIONS' always;
      add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
      add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
    }

    if ($request_method = 'GET') {
      add_header 'Access-Control-Allow-Origin' '*' always;
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
      add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
      add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
    }
  }
}

在建议使用以bucket为后端的负载均衡器之前，请先看看this

Answer 1

hostname

是生成的签名的一部分。您无法将签名 URL 转发到不同的主机名。 Google 预计主机名是

https://storage.googleapis.com

。如果您使用不同的主机名进行签名，签名验证将失败。

您可以阅读有关云存储版本 4 签名的更多信息：

使用自己的程序进行V4签名过程