2023-07-29 20:04:45 +00:00
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# frozen_string_literal: true
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2023-08-05 01:49:40 +00:00
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require "yaml"
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2023-08-29 20:18:52 +00:00
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require "tree"
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2023-08-05 01:49:40 +00:00
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2023-07-29 20:04:45 +00:00
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require_relative "skeksis/version"
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require_relative "skeksis/parser"
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2023-08-03 17:42:28 +00:00
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require_relative "skeksis/htmlize"
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module Skeksis
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#class Error < StandardError; end
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Header = <<~HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Gembridge</title>
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<style>
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h1,h2,h3,h4,h5,h6 {
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color: #2e3440;
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}
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a {
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color: #434c5e;
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}
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a:visited {
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color: #4c566a;
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}
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</style>
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</head>
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<body>
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<h1>Directory Listing</h1>
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HTML
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Footer = <<~HTML
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</body>
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</html>
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HTML
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class GemBridge
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def initialize
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config = YAML.load(File.read("config.yml"))
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@gemini_uri = config['skeksis_config']['gemini_uri']
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@serve_dir = config['skeksis_config']['serve_dir']
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@allowlist = Tree::TreeNode.new("ROOT", false)
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build_allowlist(@allowlist, @serve_dir)
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puts @allowlist.to_h
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end
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def build_allowlist(tree, path)
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Dir.each_child(path) do |child|
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full_path = Pathname.new(path).join(child)
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if child == ".serve_ok"
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tree.content = true
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end
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serve_ok = false
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if Dir.exist?(full_path)
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Dir.each_child(full_path) do |subchild|
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if subchild == ".serve_ok"
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serve_ok = true
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end
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end
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child_node = Tree::TreeNode.new(child, serve_ok)
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tree << child_node
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end
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end
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end
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def query(path, env)
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query_path = Pathname.new(path).each_filename.to_a
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2023-09-26 21:46:47 +00:00
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# Just do a directory listing if we're serving the root path
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if path == "/"
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return create_dir_listing(@serve_dir, env)
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end
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# Otherwise check if user's site has opted in to bridging
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is_allowed = @allowlist.children.any? {|child| child.name == query_path[0] and child.content == true }
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unless is_allowed
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return [Header, "Error.", Footer]
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end
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# End allowlist checking
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# Chomps the first / and builds path
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full_path = Pathname.new(@serve_dir) + path[1..-1]
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puts full_path.to_s
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if Dir.exist?(full_path)
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index_file = full_path + "index.gmi"
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if File.exist?(index_file)
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data = File.open(index_file, 'r').readlines
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[htmlize(data, env)]
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else
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create_dir_listing(full_path, env)
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end
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elsif File.exist?(full_path)
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file = File.open(full_path, 'r')
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data = file.readlines
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[htmlize(data, env)]
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else # path is invalid
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return nil
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end
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end
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def htmlize(data, env)
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Skeksis::Parser.parse(data, strip_blanks=true).htmlize(env['REQUEST_URI'], @gemini_uri)
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end
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private
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def load_style
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"<script type=\"text/css\">" +
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File.open("style/nord.css", 'r').readlines.join("\n") +
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"</script>"
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end
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def create_dir_listing(path, env)
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http = URI.parse(env['REQUEST_URI'])
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unless Dir.each_child(path).include?('.directory-listing-ok')
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return nil
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end
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listing = Dir.each_child(path).map do |i|
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if i == ".directory-listing-ok" or i == ".serve_ok"
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next
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end
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child_path = Pathname.new(path).join(i)
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puts child_path
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if Dir.exist?(child_path) and not Dir.each_child(child_path).include?('.serve_ok')
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next
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end
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uri_path = Pathname.new(env['PATH_INFO']).join(i)
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uri = URI::HTTP.build(host: http.host, port: http.port, path: uri_path.to_s)
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"<a href=\"#{uri.to_s}\">#{i}</a><br>"
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end.join("\n")
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[Header + listing + Footer]
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end
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end
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end
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