63 lines
2.0 KiB
Go
63 lines
2.0 KiB
Go
package handlers
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import (
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"net/http"
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"path/filepath"
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"strings"
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"git.haelnorr.com/h/golib/hws"
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)
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// StaticFS handles requests for static files, without allowing access to the
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// directory viewer and returning 404 if an exact file is not found
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func StaticFS(staticFS *http.FileSystem, server *hws.Server) http.Handler {
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// Create the file server once, not on every request
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fs, err := hws.SafeFileServer(staticFS)
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if err != nil {
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// If we can't create the file server, return a handler that always errors
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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throwInternalServiceError(server, w, r, "An error occurred trying to load the file system", err)
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})
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}
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return http.HandlerFunc(
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func(w http.ResponseWriter, r *http.Request) {
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// Explicitly set Content-Type for CSS files
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if strings.HasSuffix(r.URL.Path, ".css") {
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w.Header().Set("Content-Type", "text/css; charset=utf-8")
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} else if strings.HasSuffix(r.URL.Path, ".js") {
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w.Header().Set("Content-Type", "application/javascript; charset=utf-8")
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} else if strings.HasSuffix(r.URL.Path, ".ico") {
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w.Header().Set("Content-Type", "image/x-icon")
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} else {
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// Let Go detect the content type for other files
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ext := filepath.Ext(r.URL.Path)
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if contentType := mimeTypes[ext]; contentType != "" {
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w.Header().Set("Content-Type", contentType)
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}
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}
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fs.ServeHTTP(w, r)
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},
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)
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}
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// Common MIME types for static files
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var mimeTypes = map[string]string{
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".html": "text/html; charset=utf-8",
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".css": "text/css; charset=utf-8",
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".js": "application/javascript; charset=utf-8",
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".json": "application/json; charset=utf-8",
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".xml": "application/xml; charset=utf-8",
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".png": "image/png",
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".jpg": "image/jpeg",
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".jpeg": "image/jpeg",
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".gif": "image/gif",
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".svg": "image/svg+xml",
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".ico": "image/x-icon",
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".webp": "image/webp",
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".woff": "font/woff",
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".woff2": "font/woff2",
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".ttf": "font/ttf",
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".eot": "application/vnd.ms-fontobject",
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}
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