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feat(): sanitize '/' path properly

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This commit is contained in:
Lucas Barbieri 2024-08-19 20:00:07 -03:00
parent b8ad1dd9b9
commit 2212962796
1 changed files with 7 additions and 2 deletions
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9
main.go
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@ -7,7 +7,6 @@ import (
"net/http"
"os"
"path/filepath"
"strings"
"time"
)
@ -28,7 +27,13 @@ func main() {
}
func fileHandler(w http.ResponseWriter, r *http.Request) {
path := filepath.Join(filesDir, strings.TrimPrefix(r.URL.Path, "/"))
name := filepath.Clean(r.URL.Path)
path := filepath.Join(filesDir, name)
if !filepath.IsLocal(path) {
http.Error(w, "Wrong url", http.StatusBadRequest)
return
}
if fileInfo, err := os.Stat(path); err == nil && !fileInfo.IsDir() {
http.ServeFile(w, r, path)