72 lines
2.1 KiB
Crystal
72 lines
2.1 KiB
Crystal
{% if !flag?(:without_zlib) %}
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require "zlib"
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{% end %}
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module Kemal
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class StaticFileHandler < HTTP::StaticFileHandler
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def call(context : HTTP::Server::Context)
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return call_next(context) if context.request.path.not_nil! == "/"
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case context.request.method
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when "GET", "HEAD"
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else
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if @fallthrough
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call_next(context)
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else
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context.response.status_code = 405
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context.response.headers.add("Allow", "GET, HEAD")
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end
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return
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end
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config = Kemal.config.serve_static
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original_path = context.request.path.not_nil!
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request_path = URI.unescape(original_path)
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# File path cannot contains '\0' (NUL) because all filesystem I know
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# don't accept '\0' character as file name.
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if request_path.includes? '\0'
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context.response.status_code = 400
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return
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end
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expanded_path = File.expand_path(request_path, "/")
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is_dir_path = if original_path.ends_with?('/') && !expanded_path.ends_with? '/'
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expanded_path = expanded_path + '/'
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true
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else
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expanded_path.ends_with? '/'
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end
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file_path = File.join(@public_dir, expanded_path)
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is_dir = Dir.exists? file_path
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if request_path != expanded_path
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redirect_to context, expanded_path
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elsif is_dir && !is_dir_path
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redirect_to context, expanded_path + '/'
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end
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if Dir.exists?(file_path)
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if config.is_a?(Hash) && config["dir_listing"] == true
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context.response.content_type = "text/html"
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directory_listing(context.response, request_path, file_path)
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else
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call_next(context)
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end
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elsif File.exists?(file_path)
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last_modified = modification_time(file_path)
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add_cache_headers(context.response.headers, last_modified)
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if cache_request?(context, last_modified)
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context.response.status_code = 304
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return
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end
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send_file(context, file_path)
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else
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call_next(context)
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end
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end
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end
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end
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