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Merge pull request #1 from Shivam010/pfs
Add proxied file system blob implementation with its route handler
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package handler | ||
|
|
||
| import ( | ||
| "errors" | ||
| "github.com/Shivam010/upload" | ||
| "net/http" | ||
| "os" | ||
| ) | ||
|
|
||
| func BucketRouteAndHandler(buck *upload.Bucket) (route string, handler func(http.ResponseWriter, *http.Request), err error) { | ||
| if buck == nil || buck.Provider() != upload.ProxiedFileSystem { | ||
| return "", nil, errors.New("handler: can only work on Proxied File System Bucket provider") | ||
| } | ||
| // Bucket region is alias for the route | ||
| // Bucket account is alias for the storage directory | ||
| route = "/" + buck.GetMetadata("route") | ||
| handlerFunc := http.StripPrefix( | ||
| route, | ||
| http.FileServer(wrappedFileSystem{ | ||
| fs: http.Dir(buck.GetMetadata("storage")), | ||
| }), | ||
| ).ServeHTTP | ||
|
|
||
| return route + "/", | ||
| func(w http.ResponseWriter, r *http.Request) { | ||
| // security and caching headers | ||
| w.Header().Set("X-Content-Type-Options", "nosniff") | ||
| w.Header().Set("Referrer-Policy", "strict-origin") | ||
| w.Header().Set("X-XSS-Protection", "1; mode=block") | ||
| w.Header().Set("X-Frame-Options", "SAMEORIGIN") | ||
| w.Header().Set("Strict-Transport-Security", "max-age=31536000") | ||
| w.Header().Set("Cache-Control", "public, max-age=31536000, immutable") | ||
| handlerFunc(w, r) | ||
| }, | ||
| nil | ||
| } | ||
|
|
||
| type wrappedFileSystem struct { | ||
| fs http.FileSystem | ||
| } | ||
|
|
||
| func (w wrappedFileSystem) Open(path string) (http.File, error) { | ||
| file, err := w.fs.Open(path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| st, err := file.Stat() | ||
| if st.IsDir() { | ||
| return nil, os.ErrNotExist | ||
| } | ||
| return file, nil | ||
| } |
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