Question

我在一个子域上提供了单页应用，在另一个子域上提供了api。我在飞行前检查中获得了403 Forbidden，用于XHR POST到api。

在curl中调试显示：

 curl  -H "Host: backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com" \
 -H "Origin: http://frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com" \
-H "Access-Control-Request-Method: POST" \
-H "Access-Control-Request-Headers: content-type" \
-X OPTIONS --verbose http://backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com/api/users
*   Trying 54.153.79.158...
* TCP_NODELAY set
* Connected to backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com (54.153.79.158) port 80 (#0)
> OPTIONS /api/users HTTP/1.1
> Host: backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com
> User-Agent: curl/7.54.0
> Accept: */*
> Origin: http://frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com
> Access-Control-Request-Method: POST
> Access-Control-Request-Headers: content-type
> 
* HTTP 1.0, assume close after body
< HTTP/1.0 403 Forbidden
< Date: Fri, 04 May 2018 21:16:52 GMT
< Server: Apache/2.4.27 (Red Hat) OpenSSL/1.0.1e-fips
< Cache-Control: no-cache, private
< Access-Control-Allow-Origin: *
< Access-Control-Allow-Headers: accept, access-control-allow-origin, content-type
< Access-Control-Allow-Methods: PUT, GET, POST, DELETE, OPTIONS
< Content-Length: 18
< Content-Type: text/html; charset=UTF-8
< Set-Cookie: 45fe47f0bb613513b8e98d0599b628f9=dd4b5c95b51d6168419458748b392421; path=/; HttpOnly
* HTTP/1.0 connection set to keep alive!
< Connection: keep-alive
< 
* Connection #0 to host backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com left intact
Origin not allowed

然而，响应中的Access-Control-Allow-Origin: *表明它应该允许Origin: http://frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com命名该请求。

如果我从请求中删除Origin标题，我会得到200.

我尝试在服务器上明确设置Access-Control-Allow-Origin以匹配请求的Origin，但也会返回403：

 curl  -H "Host: backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com" \
 -H "Origin: http://frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com" \
-H "Access-Control-Request-Method: POST" \
-H "Access-Control-Request-Headers: content-type" \
-X OPTIONS --verbose http://backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com/api/users
*   Trying 54.153.79.158...
* TCP_NODELAY set
* Connected to backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com (54.153.79.158) port 80 (#0)
> OPTIONS /api/users HTTP/1.1
> Host: backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com
> User-Agent: curl/7.54.0
> Accept: */*
> Origin: http://frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com
> Access-Control-Request-Method: POST
> Access-Control-Request-Headers: content-type
> 
* HTTP 1.0, assume close after body
< HTTP/1.0 403 Forbidden
< Date: Fri, 04 May 2018 21:32:52 GMT
< Server: Apache/2.4.27 (Red Hat) OpenSSL/1.0.1e-fips
< Cache-Control: no-cache, private
< Access-Control-Allow-Origin: http://frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com
< Access-Control-Allow-Headers: accept, access-control-allow-origin, content-type
< Access-Control-Allow-Methods: PUT, GET, POST, DELETE, OPTIONS
< Content-Length: 18
< Content-Type: text/html; charset=UTF-8
< Set-Cookie: 45fe47f0bb613513b8e98d0599b628f9=a913ecc9ded73c3ac76fbb38d93e15a7; path=/; HttpOnly
* HTTP/1.0 connection set to keep alive!
< Connection: keep-alive
< 
* Connection #0 to host backend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com left intact
Origin not allowed

在服务器上，.htaccess具有以下配置：

<IfModule mod_headers.c>
    Header add Access-Control-Allow-Origin "http://frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com"
    Header add Access-Control-Allow-Headers "accept, access-control-allow-origin, content-type"
    Header add Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS"
</IfModule>

将Access-Control-Allow-Origin设置为"*"并不能解决问题。

为什么在原点似乎被允许时禁止响应403以及如何修复它？

谢谢！

更新

这是我最新的.htaccess，它适用于laravel PHP后端：

<IfModule mod_rewrite.c>
    <IfModule mod_negotiation.c>
        Options -MultiViews -Indexes
    </IfModule>

    RewriteEngine On

    # Handle Authorization Header
    RewriteCond %{HTTP:Authorization} .
    RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

    # Redirect Trailing Slashes If Not A Folder...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_URI} (.+)/$
    RewriteRule ^ %1 [L,R=301]

    # Handle Front Controller...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]
</IfModule>
<IfModule mod_headers.c>
    Header add Access-Control-Allow-Origin "*"
    Header add Access-Control-Allow-Headers "*"
    Header add Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS"
</IfModule>

Answer 1

正如@roryhewitt在对这个问题的评论中所说，这不是一个apache .htaccess问题。问题是后端API laravel应用程序给任何CORS请求403。

我删除了mod_headers.c配置，并使用环境变量barryvdh/laravel-cors配置了后端应用使用的CORS_ALLOWED_ORIGINS=frontend-sjm-staging.a3c1.starter-us-west-1.openshiftapps.com模块。这会将allowedOrigins设置为here。

预检OPTIONS检查给403带有Access-Control-Allow-Origin“*”

1 个答案: