26 lines
1 KiB
Go
26 lines
1 KiB
Go
package exhttp
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import "net/http"
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func AddCORSHeaders(w http.ResponseWriter) {
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// Recommended CORS headers can be found in https://spec.matrix.org/v1.3/client-server-api/#web-browser-clients
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w.Header().Set("Access-Control-Allow-Origin", "*")
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w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
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w.Header().Set("Access-Control-Allow-Headers", "X-Requested-With, Content-Type, Authorization")
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w.Header().Set("Content-Security-Policy", "sandbox; default-src 'none'; script-src 'none'; plugin-types application/pdf; style-src 'unsafe-inline'; object-src 'self';")
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// Allow browsers to cache above for 1 day
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w.Header().Set("Access-Control-Max-Age", "86400")
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}
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// CORSMiddleware adds CORS headers to the response and handles OPTIONS
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// requests by returning 200 OK immediately.
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func CORSMiddleware(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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AddCORSHeaders(w)
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if r.Method == http.MethodOptions {
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w.WriteHeader(http.StatusOK)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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