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lib/snap/exceptions/invalid_path_error.ex
defmodule Snap.InvalidPathError do
@moduledoc """
Represents an error when a request path is malformed or contains
directory-traversal segments.
"""
@enforce_keys [:path]
defexception [:path, :message]
@type t :: %__MODULE__{
path: term(),
message: String.t()
}
@impl true
def exception(opts) when is_list(opts) do
path = Keyword.fetch!(opts, :path)
message =
"request path #{inspect(path)} is invalid: it contains traversal " <>
"segments (`..` or `.`) or is not an absolute path"
%__MODULE__{path: path, message: message}
end
end