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# Command-line interface
# Copyright (C) 2023 Nguyễn Gia Phong
#
# This file if part of hybring.
#
# Hybring is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Hybring is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with hybring. If not, see <https://www.gnu.org/licenses/>.
require "ini"
require "option_parser"
require "./http"
enum Subcommand
Serve
Usage
end
struct Configuration
@db : Path
getter db
@api : String
getter api
@opennic_local : Path
getter opennic_local
@opennic_remote : String
getter opennic_remote
@icann_local : Path
getter icann_local
@icann_remote : String
getter icann_remote
def initialize(ini)
@db = Path[ini["general"]["db"]]
@api = ini["general"]["api"]
@opennic_local = Path[ini["opennic"]["local"]]
@opennic_remote = ini["opennic"]["remote"]
@icann_local = Path[ini["icann"]["local"]]
@icann_remote = ini["icann"]["remote"]
end
end
def die(error)
STDERR << error
exit 1
end
{% unless @top_level.constant("SPEC") %}
subcmd = Subcommand::Usage
usage = ""
config_path, port = nil, 0
parser = OptionParser.new do |parser|
banner_prefix = "Usage: #{Path[PROGRAM_NAME].basename}"
parser.banner = "#{banner_prefix} [subcommand] [arguments]"
parser.on "serve", "start the HTTP server" do
subcmd = Subcommand::Serve
parser.banner = "#{banner_prefix} serve --config=PATH [--port=N]"
usage = parser.to_s
parser.on "-c PATH", "--config=PATH",
"path to configuration file (required)" do |path|
config_path = path
end
parser.on "-p N", "--port=N", "listening port" do |n|
port = n.to_i
end
end
parser.on "-h", "--help", "show this help message and exit" do
puts parser
exit
end
parser.invalid_option do |flag|
STDERR.puts "Error: Invalid option: #{flag}"
subcmd = Subcommand::Usage
end
parser.missing_option do |flag|
STDERR.puts "Error: Missing argument for #{flag}"
subcmd = Subcommand::Usage
end
parser.unknown_args do |before_dash, after_dash|
next if before_dash.empty? && after_dash.empty?
STDERR << "Error: Unknown arguments:"
STDERR << " " << before_dash.join " " if !before_dash.empty?
STDERR << " -- " << after_dash.join " " if !after_dash.empty?
STDERR.puts
subcmd = Subcommand::Usage
end
end
parser.parse
cfg = case subcmd
when .serve?
unless config_path
die usage
end
begin
Configuration.new INI.parse File.read config_path.not_nil!
rescue ex
die "Error: Failed to read config from #{config_path}: #{ex}\n"
end
end
case subcmd
in .serve?
server = Server.new cfg.not_nil!
server.listen port do |address|
puts "Listening on http://#{address}"
end
in .usage?
die parser
end
{% end %}
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