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fix: prevent maliciously constructed parameters like /api/public/dl/XZzCDnK2_not_exists_hash_name cause panic (#791)

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ttys3 2019-07-05 19:15:57 +08:00 committed by Henrique Dias
parent 888e08792e
commit be902be453
1 changed files with 7 additions and 0 deletions
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7
http/public.go
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@ -40,8 +40,15 @@ var withHashFile = func(fn handleFunc) handleFunc {
}
}
// ref to https://github.com/filebrowser/filebrowser/pull/727
// `/api/public/dl/MEEuZK-v/file-name.txt` for old browsers to save file with correct name
func ifPathWithName(r *http.Request) string {
pathElements := strings.Split(r.URL.Path, "/")
// prevent maliciously constructed parameters like `/api/public/dl/XZzCDnK2_not_exists_hash_name`
// len(pathElements) will be 1, and golang will panic `runtime error: index out of range`
if len(pathElements) < 2 {
return r.URL.Path
}
id := pathElements[len(pathElements)-2]
return id
}