44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
package middleware
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import (
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"log"
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"net/http"
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"os"
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)
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func SetHeaders(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodOptions {
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// Only set Content-Type if not SSE
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if w.Header().Get("Content-Type") != "text/event-stream" {
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w.Header().Set("Content-Type", "application/json")
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}
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}
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w.Header().Set("X-DNS-Prefetch-Control", "off")
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w.Header().Set("X-Frame-Options", "DENY")
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w.Header().Set("X-XSS-Protection", "1; mode=block")
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w.Header().Set("X-Content-Type-Options", "nosniff")
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w.Header().Set("Content-Security-Policy", "default-src 'self'")
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w.Header().Set("Referrer-Policy", "no-referrer")
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w.Header().Set("X-Powered-By", "Zig")
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GoEnv := os.Getenv("GO_ENV")
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if GoEnv == "" {
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log.Fatal("GO_ENV is not set in SetHeaders middleware. Please set the GO_ENV environment variable.")
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}
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if GoEnv != "development" {
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w.Header().Set("Strict-Transport-Security", "max-age=63072000; includeSubDomains; preload")
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}
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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(&FlusherPreservingResponseWriter{ResponseWriter: w}, r)
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})
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}
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