45 lines
823 B
Go
45 lines
823 B
Go
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package header
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import (
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"net/http"
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"github.com/photoprism/photoprism/pkg/list"
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)
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// Content Delivery Network (CDN) headers.
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const (
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CdnHost = "Cdn-Host"
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CdnMobileDevice = "Cdn-Mobiledevice"
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CdnServerZone = "Cdn-Serverzone"
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CdnServerID = "Cdn-Serverid"
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CdnConnectionID = "Cdn-Connectionid"
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)
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// IsCdn checks whether the request seems to come from a CDN.
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func IsCdn(req *http.Request) bool {
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if req == nil {
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return false
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} else if req.Header == nil || req.URL == nil {
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return false
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}
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if req.Header.Get(CdnHost) != "" {
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return true
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}
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return false
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}
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// BlockCdn checks whether the request should be blocked for CDNs.
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func BlockCdn(req *http.Request) bool {
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if !IsCdn(req) {
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return false
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}
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if req.URL.Path == "/" {
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return true
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}
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return list.Excludes(SafeMethods, req.Method)
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}
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