Nginx WebDAV 模块忽略 CORS headers

Question

我是运行使用 Nginx 的 WebDAV。我有一个 JS 应用程序使用它作为存储。问题是 WebDAV 扩展正在删除我在配置中使用 "add_header" 添加的 headers。

server {
  # IP, Certificates, fullpath, autoindex ...
  dav_methods      PUT DELETE MKCOL COPY MOVE;
  dav_ext_methods  PROPFIND OPTIONS;
  dav_access       user:rw group:rw all:rw;

  location / {
    root /srv/http/content;

    # Preflighted requests
    if ($request_method = OPTIONS) {
      add_header "Access-Control-Allow-Origin" *;
      add_header "Access-Control-Allow-Methods" "GET, HEAD, POST, PUT, OPTIONS, MOVE, DELETE, COPY, LOCK, UNLOCK, PROPFIND";
      add_header "Access-Control-Allow-Headers" "Authorization, Origin, X-Requested-With, Content-Type, Accept, DNT, X-CustomHeader, Keep-Alive,User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Range, Range, Depth";
      return 200;
    }

    if ($request_method = (GET|POST|HEAD|DELETE|PROPFIND)) {
      add_header "Access-Control-Allow-Origin" *;
      add_header "Access-Control-Allow-Methods" "GET, HEAD, POST, PUT, OPTIONS, MOVE, DELETE, COPY, LOCK, UNLOCK, PROPFIND";
      add_header "Access-Control-Allow-Headers" "Authorization, Origin, X-Requested-With, Content-Type, Accept";
    }
  }
}

当我从我的应用程序打开 WebDAV 连接时，它请求 OPTIONS，然后是 PROPFIND。请求 OPTIONS 通过具有正确的 CORS headers 但 PROPFIND 失败，因为没有设置 CORS headers。请注意配置中 OPTIONS 的特殊情况，我强制 Nginx 为 return Http200。然后 headers 出现。但是当让 WebDAV 完成时，所有 CORS headers 都消失了。

有人规避过这种行为吗？

Answer 1

其实是nginx的webdav的bug。我能够使用 lighttpd 快速获得 webdav（使用 CORS、身份验证和 SSL）运行。我的示例配置

server.port         = 81
server.username     = "http"
server.groupname    = "http"
server.modules      = (
    "mod_webdav",
    "mod_auth",
    "mod_setenv", # before mod_status, very important!
    "mod_status",
    "mod_openssl"
    )
server.document-root= "/srv/http/content"
server.errorlog     = "/var/log/lighttpd/error.log"
ssl.engine          = "enable"
ssl.pemfile         = "/etc/ssl/webdav.key"
webdav.activate     = "enable"
auth.backend        = "htpasswd"
auth.backend.htpasswd.userfile = "/srv/http/passwd"
setenv.add-response-header     = (
    "Access-Control-Allow-Origin" => "*",
    "Access-Control-Allow-Methods" => "GET, HEAD, POST, PUT, OPTIONS, MOVE, DELETE, COPY, LOCK, UNLOCK, PROPFIND",
    "Access-Control-Allow-Headers" => "Authorization, Origin, X-Requested-With, Content-Type, Accept, DNT, X-CustomHeader, Keep-Alive,User-Agent, X-Requested-With, If-Modified-Since,Cache-Control, Content-Range, Range, Depth, Content-Length"
    )
mimetype.assign     = (
                ".html" => "text/html",
                ".txt" => "text/plain",
                ".css" => "text/css",
                ".js" => "application/x-javascript",
                ".jpg" => "image/jpeg",
                ".jpeg" => "image/jpeg",
                ".gif" => "image/gif",
                ".png" => "image/png",
                "" => "application/octet-stream"
            )

Answer 2

我遇到了同样的问题。

尝试将 always 关键字添加到 add_header 语句：

add_header "Access-Control-Allow-Origin" * always;
add_header "Access-Control-Allow-Methods" "GET, HEAD, POST, PUT, OPTIONS, MOVE, DELETE, COPY, LOCK, UNLOCK, PROPFIND" always;
add_header "Access-Control-Allow-Headers" "Authorization, Origin, X-Requested-With, Content-Type, Accept, DNT, X-CustomHeader, Keep-Alive,User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Range, Range, Depth" always;

add_header 文档：

Syntax: add_header name value [always];

Adds the specified field to a response header provided that the response code equals 200, 201 (1.3.10), 204, 206, 301, 302, 303, 304, 307 (1.1.16, 1.0.13), or 308 (1.13.0). [...] If the always parameter is specified (1.7.5), the header field will be added regardless of the response code.

https://nginx.org/en/docs/http/ngx_http_headers_module.html

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