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ssl-client
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ssl-client
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#!/usr/bin/env ruby
# frozen_string_literal: true
# Copyright (c) 2011 The University of Manchester, UK.
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# * Neither the names of The University of Manchester nor the names of its
# contributors may be used to endorse or promote products derived from this
# software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Author: Robert Haines
require 'socket'
require 'openssl'
require 'optparse'
DEFAULT_PORT = 6666
options = { port: DEFAULT_PORT }
opts = OptionParser.new do |opt|
opt.banner = 'Usage: ssl-client [options] host'
opt.separator ' A basic secure sockets client where [options] can be:'
opt.on('-p PORT', '--port=PORT', 'The port number to connect to. Default ' \
"#{DEFAULT_PORT}.") do |val|
options[:port] = val.chomp.to_i
end
opt.on('-c CERTIFICATE', '--cert=CERTICATE', 'Certificate and key in ' \
'pem format.') do |val|
options[:cert] = val.chomp
end
opt.on_tail('-h', '-?', '--help', 'Show this help message.') do
puts opts
exit
end
opt.on_tail('-v', '--version', 'Show the version.') do
puts '2.0'
exit
end
end
opts.parse!
begin
options[:host] = ARGV.shift.chomp
rescue StandardError
puts 'Please supply a host to connect to.', opts
exit(1)
end
context = OpenSSL::SSL::SSLContext.new
context.ca_file = options[:cert]
context.verify_mode = OpenSSL::SSL::VERIFY_PEER
tcp = TCPSocket.new(options[:host], options[:port])
socket = OpenSSL::SSL::SSLSocket.new(tcp, context)
socket.connect
puts 'Connected to server...'
while (out = socket.gets)
puts out
end
puts 'Connection closed.'