You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
2.2 KiB
52 lines
2.2 KiB
/*
|
|
* MinIO Cloud Storage, (C) 2016 MinIO, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import "net/http"
|
|
|
|
// Standard cross domain policy information located at https://s3.amazonaws.com/crossdomain.xml
|
|
const crossDomainXML = `<?xml version="1.0"?><!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd"><cross-domain-policy><allow-access-from domain="*" secure="false" /></cross-domain-policy>`
|
|
|
|
// Standard path where an app would find cross domain policy information.
|
|
const crossDomainXMLEntity = "/crossdomain.xml"
|
|
|
|
// Cross domain policy implements http.Handler interface, implementing a custom ServerHTTP.
|
|
type crossDomainPolicy struct {
|
|
handler http.Handler
|
|
}
|
|
|
|
// A cross-domain policy file is an XML document that grants a web client, such as Adobe Flash Player
|
|
// or Adobe Acrobat (though not necessarily limited to these), permission to handle data across domains.
|
|
// When clients request content hosted on a particular source domain and that content make requests
|
|
// directed towards a domain other than its own, the remote domain needs to host a cross-domain
|
|
// policy file that grants access to the source domain, allowing the client to continue the transaction.
|
|
func setCrossDomainPolicy(h http.Handler) http.Handler {
|
|
return crossDomainPolicy{handler: h}
|
|
}
|
|
|
|
func (c crossDomainPolicy) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
|
// Look for 'crossdomain.xml' in the incoming request.
|
|
switch r.URL.Path {
|
|
case crossDomainXMLEntity:
|
|
// Write the standard cross domain policy xml.
|
|
w.Write([]byte(crossDomainXML))
|
|
// Request completed, no need to serve to other handlers.
|
|
return
|
|
}
|
|
// Continue to serve the request further.
|
|
c.handler.ServeHTTP(w, r)
|
|
}
|
|
|