--- /dev/null
+#!/usr/local/bin/lua
+
+--
+-- Copyright (c) 2007, Cameron Rich
+--
+-- 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 name of the axTLS project 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.
+--
+
+--
+-- Demonstrate the use of the axTLS library in Lua with a set of
+-- command-line parameters similar to openssl. In fact, openssl clients
+-- should be able to communicate with axTLS servers and visa-versa.
+--
+-- This code has various bits enabled depending on the configuration. To enable
+-- the most interesting version, compile with the 'full mode' enabled.
+--
+-- To see what options you have, run the following:
+-- > [lua] axssl s_server -?
+-- > [lua] axssl s_client -?
+--
+-- The axtls/axtlsl shared libraries must be in the same directory or be found
+-- by the OS.
+--
+--
+require "bit"
+require("axtlsl")
+local socket = require("socket")
+
+-- print version?
+if #arg == 1 and arg[1] == "version" then
+ print("axssl.lua "..axtlsl.ssl_version())
+ os.exit(1)
+end
+
+--
+-- We've had some sort of command-line error. Print out the basic options.
+--
+function print_options(option)
+ print("axssl: Error: '"..option.."' is an invalid command.")
+ print("usage: axssl [s_server|s_client|version] [args ...]")
+ os.exit(1)
+end
+
+--
+-- We've had some sort of command-line error. Print out the server options.
+--
+function print_server_options(build_mode, option)
+ local cert_size = axtlsl.ssl_get_config(axtlsl.SSL_MAX_CERT_CFG_OFFSET)
+ local ca_cert_size = axtlsl.ssl_get_config(
+ axtlsl.SSL_MAX_CA_CERT_CFG_OFFSET)
+
+ print("unknown option "..option)
+ print("usage: s_server [args ...]")
+ print(" -accept\t- port to accept on (default is 4433)")
+ print(" -quiet\t\t- No server output")
+
+ if build_mode >= axtlsl.SSL_BUILD_SERVER_ONLY then
+ print(" -cert arg\t- certificate file to add (in addition to "..
+ "default) to chain -")
+ print("\t\t Can repeat up to "..cert_size.." times")
+ print(" -key arg\t- Private key file to use - default DER format")
+ print(" -pass\t\t- private key file pass phrase source")
+ end
+
+ if build_mode >= axtlsl.SSL_BUILD_ENABLE_VERIFICATION then
+ print(" -verify\t- turn on peer certificate verification")
+ print(" -CAfile arg\t- Certificate authority - default DER format")
+ print("\t\t Can repeat up to "..ca_cert_size.." times")
+ end
+
+ if build_mode == axtlsl.SSL_BUILD_FULL_MODE then
+ print(" -debug\t\t- Print more output")
+ print(" -state\t\t- Show state messages")
+ print(" -show-rsa\t- Show RSA state")
+ end
+
+ os.exit(1)
+end
+
+--
+-- We've had some sort of command-line error. Print out the client options.
+--
+function print_client_options(build_mode, option)
+ local cert_size = axtlsl.ssl_get_config(axtlsl.SSL_MAX_CERT_CFG_OFFSET)
+ local ca_cert_size = axtlsl.ssl_get_config(
+ axtlsl.SSL_MAX_CA_CERT_CFG_OFFSET)
+
+ print("unknown option "..option)
+
+ if build_mode >= axtlsl.SSL_BUILD_ENABLE_CLIENT then
+ print("usage: s_client [args ...]")
+ print(" -connect host:port - who to connect to (default "..
+ "is localhost:4433)")
+ print(" -verify\t- turn on peer certificate verification")
+ print(" -cert arg\t- certificate file to use - default DER format")
+ print(" -key arg\t- Private key file to use - default DER format")
+ print("\t\t Can repeat up to "..cert_size.." times")
+ print(" -CAfile arg\t- Certificate authority - default DER format")
+ print("\t\t Can repeat up to "..ca_cert_size.."times")
+ print(" -quiet\t\t- No client output")
+ print(" -pass\t\t- private key file pass phrase source")
+ print(" -reconnect\t- Drop and re-make the connection "..
+ "with the same Session-ID")
+
+ if build_mode == axtlsl.SSL_BUILD_FULL_MODE then
+ print(" -debug\t\t- Print more output")
+ print(" -state\t\t- Show state messages")
+ print(" -show-rsa\t- Show RSA state")
+ end
+ else
+ print("Change configuration to allow this feature")
+ end
+
+ os.exit(1)
+end
+
+-- Implement the SSL server logic.
+function do_server(build_mode)
+ local i = 2
+ local v
+ local port = 4433
+ local options = axtlsl.SSL_DISPLAY_CERTS
+ local quiet = false
+ local password = ""
+ local private_key_file = nil
+ local cert_size = axtlsl.ssl_get_config(axtlsl.SSL_MAX_CERT_CFG_OFFSET)
+ local ca_cert_size = axtlsl.
+ ssl_get_config(axtlsl.SSL_MAX_CA_CERT_CFG_OFFSET)
+ local cert = {}
+ local ca_cert = {}
+
+ while i <= #arg do
+ if arg[i] == "-accept" then
+ if i >= #arg then
+ print_server_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ port = arg[i]
+ elseif arg[i] == "-quiet" then
+ quiet = true
+ options = bit.band(options, bit.bnot(axtlsl.SSL_DISPLAY_CERTS))
+ elseif build_mode >= axtlsl.SSL_BUILD_SERVER_ONLY then
+ if arg[i] == "-cert" then
+ if i >= #arg or #cert >= cert_size then
+ print_server_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ table.insert(cert, arg[i])
+ elseif arg[i] == "-key" then
+ if i >= #arg then
+ print_server_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ private_key_file = arg[i]
+ options = bit.bor(options, axtlsl.SSL_NO_DEFAULT_KEY)
+ elseif arg[i] == "-pass" then
+ if i >= #arg then
+ print_server_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ password = arg[i]
+ elseif build_mode >= axtlsl.SSL_BUILD_ENABLE_VERIFICATION then
+ if arg[i] == "-verify" then
+ options = bit.bor(options, axtlsl.SSL_CLIENT_AUTHENTICATION)
+ elseif arg[i] == "-CAfile" then
+ if i >= #arg or #ca_cert >= ca_cert_size then
+ print_server_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ table.insert(ca_cert, arg[i])
+ elseif build_mode == axtlsl.SSL_BUILD_FULL_MODE then
+ if arg[i] == "-debug" then
+ options = bit.bor(options, axtlsl.SSL_DISPLAY_BYTES)
+ elseif arg[i] == "-state" then
+ options = bit.bor(options, axtlsl.SSL_DISPLAY_STATES)
+ elseif arg[i] == "-show-rsa" then
+ options = bit.bor(options, axtlsl.SSL_DISPLAY_RSA)
+ else
+ print_server_options(build_mode, arg[i])
+ end
+ else
+ print_server_options(build_mode, arg[i])
+ end
+ else
+ print_server_options(build_mode, arg[i])
+ end
+ else
+ print_server_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ end
+
+ -- Create socket for incoming connections
+ local server_sock = socket.try(socket.bind("*", port))
+
+ ---------------------------------------------------------------------------
+ -- This is where the interesting stuff happens. Up until now we've
+ -- just been setting up sockets etc. Now we do the SSL handshake.
+ ---------------------------------------------------------------------------
+ local ssl_ctx = axtlsl.ssl_ctx_new(options, axtlsl.SSL_DEFAULT_SVR_SESS)
+ if ssl_ctx == nil then error("Error: Server context is invalid") end
+
+ if private_key_file ~= nil then
+ local obj_type = axtlsl.SSL_OBJ_RSA_KEY
+
+ if string.find(private_key_file, ".p8") then
+ obj_type = axtlsl.SSL_OBJ_PKCS8
+ end
+
+ if string.find(private_key_file, ".p12") then
+ obj_type = axtlsl.SSL_OBJ_PKCS12
+ end
+
+ if axtlsl.ssl_obj_load(ssl_ctx, obj_type, private_key_file,
+ password) ~= axtlsl.SSL_OK then
+ error("Private key '" .. private_key_file .. "' is undefined.")
+ end
+ end
+
+ for _, v in ipairs(cert) do
+ if axtlsl.ssl_obj_load(ssl_ctx, axtlsl.SSL_OBJ_X509_CERT, v, "") ~=
+ axtlsl.SSL_OK then
+ error("Certificate '"..v .. "' is undefined.")
+ end
+ end
+
+ for _, v in ipairs(ca_cert) do
+ if axtlsl.ssl_obj_load(ssl_ctx, axtlsl.SSL_OBJ_X509_CACERT, v, "") ~=
+ axtlsl.SSL_OK then
+ error("Certificate '"..v .."' is undefined.")
+ end
+ end
+
+ while true do
+ if not quiet then print("ACCEPT") end
+ local client_sock = server_sock:accept();
+ local ssl = axtlsl.ssl_server_new(ssl_ctx, client_sock:getfd())
+
+ -- do the actual SSL handshake
+ local connected = false
+ local res
+ local buf
+
+ while true do
+ socket.select({client_sock}, nil)
+ res, buf = axtlsl.ssl_read(ssl)
+
+ if res == axtlsl.SSL_OK then -- connection established and ok
+ if axtlsl.ssl_handshake_status(ssl) == axtlsl.SSL_OK then
+ if not quiet and not connected then
+ display_session_id(ssl)
+ display_cipher(ssl)
+ end
+ connected = true
+ end
+ end
+
+ if res > axtlsl.SSL_OK then
+ for _, v in ipairs(buf) do
+ io.write(string.format("%c", v))
+ end
+ elseif res < axtlsl.SSL_OK then
+ if not quiet then
+ axtlsl.ssl_display_error(res)
+ end
+ break
+ end
+ end
+
+ -- client was disconnected or the handshake failed.
+ print("CONNECTION CLOSED")
+ axtlsl.ssl_free(ssl)
+ client_sock:close()
+ end
+
+ axtlsl.ssl_ctx_free(ssl_ctx)
+end
+
+--
+-- Implement the SSL client logic.
+--
+function do_client(build_mode)
+ local i = 2
+ local v
+ local port = 4433
+ local options =
+ bit.bor(axtlsl.SSL_SERVER_VERIFY_LATER, axtlsl.SSL_DISPLAY_CERTS)
+ local private_key_file = nil
+ local reconnect = 0
+ local quiet = false
+ local password = ""
+ local session_id = {}
+ local host = "127.0.0.1"
+ local cert_size = axtlsl.ssl_get_config(axtlsl.SSL_MAX_CERT_CFG_OFFSET)
+ local ca_cert_size = axtlsl.
+ ssl_get_config(axtlsl.SSL_MAX_CA_CERT_CFG_OFFSET)
+ local cert = {}
+ local ca_cert = {}
+
+ while i <= #arg do
+ if arg[i] == "-connect" then
+ if i >= #arg then
+ print_client_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ local t = string.find(arg[i], ":")
+ host = string.sub(arg[i], 1, t-1)
+ port = string.sub(arg[i], t+1)
+ elseif arg[i] == "-cert" then
+ if i >= #arg or #cert >= cert_size then
+ print_client_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ table.insert(cert, arg[i])
+ elseif arg[i] == "-key" then
+ if i >= #arg then
+ print_client_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ private_key_file = arg[i]
+ options = bit.bor(options, axtlsl.SSL_NO_DEFAULT_KEY)
+ elseif arg[i] == "-CAfile" then
+ if i >= #arg or #ca_cert >= ca_cert_size then
+ print_client_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ table.insert(ca_cert, arg[i])
+ elseif arg[i] == "-verify" then
+ options = bit.band(options,
+ bit.bnot(axtlsl.SSL_SERVER_VERIFY_LATER))
+ elseif arg[i] == "-reconnect" then
+ reconnect = 4
+ elseif arg[i] == "-quiet" then
+ quiet = true
+ options = bit.band(options, bnot(axtlsl.SSL_DISPLAY_CERTS))
+ elseif arg[i] == "-pass" then
+ if i >= #arg then
+ print_server_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ password = arg[i]
+ elseif build_mode == axtlsl.SSL_BUILD_FULL_MODE then
+ if arg[i] == "-debug" then
+ options = bit.bor(options, axtlsl.SSL_DISPLAY_BYTES)
+ elseif arg[i] == "-state" then
+ options = bit.bor(axtlsl.SSL_DISPLAY_STATES)
+ elseif arg[i] == "-show-rsa" then
+ options = bit.bor(axtlsl.SSL_DISPLAY_RSA)
+ else -- don't know what this is
+ print_client_options(build_mode, arg[i])
+ end
+ else -- don't know what this is
+ print_client_options(build_mode, arg[i])
+ end
+
+ i = i + 1
+ end
+
+ local client_sock = socket.try(socket.connect(host, port))
+ local ssl
+ local res
+
+ if not quiet then print("CONNECTED") end
+
+ ---------------------------------------------------------------------------
+ -- This is where the interesting stuff happens. Up until now we've
+ -- just been setting up sockets etc. Now we do the SSL handshake.
+ ---------------------------------------------------------------------------
+ local ssl_ctx = axtlsl.ssl_ctx_new(options, axtlsl.SSL_DEFAULT_CLNT_SESS)
+
+ if ssl_ctx == nil then
+ error("Error: Client context is invalid")
+ end
+
+ if private_key_file ~= nil then
+ local obj_type = axtlsl.SSL_OBJ_RSA_KEY
+
+ if string.find(private_key_file, ".p8") then
+ obj_type = axtlsl.SSL_OBJ_PKCS8
+ end
+
+ if string.find(private_key_file, ".p12") then
+ obj_type = axtlsl.SSL_OBJ_PKCS12
+ end
+
+ if axtlsl.ssl_obj_load(ssl_ctx, obj_type, private_key_file,
+ password) ~= axtlsl.SSL_OK then
+ error("Private key '"..private_key_file.."' is undefined.")
+ end
+ end
+
+ for _, v in ipairs(cert) do
+ if axtlsl.ssl_obj_load(ssl_ctx, axtlsl.SSL_OBJ_X509_CERT, v, "") ~=
+ axtlsl.SSL_OK then
+ error("Certificate '"..v .. "' is undefined.")
+ end
+ end
+
+ for _, v in ipairs(ca_cert) do
+ if axtlsl.ssl_obj_load(ssl_ctx, axtlsl.SSL_OBJ_X509_CACERT, v, "") ~=
+ axtlsl.SSL_OK then
+ error("Certificate '"..v .."' is undefined.")
+ end
+ end
+
+ -- Try session resumption?
+ if reconnect ~= 0 then
+ local session_id = nil
+ local sess_id_size = 0
+
+ while reconnect > 0 do
+ reconnect = reconnect - 1
+ ssl = axtlsl.ssl_client_new(ssl_ctx,
+ client_sock:getfd(), session_id, sess_id_size)
+
+ res = axtlsl.ssl_handshake_status(ssl)
+ if res ~= axtlsl.SSL_OK then
+ if not quiet then axtlsl.ssl_display_error(res) end
+ axtlsl.ssl_free(ssl)
+ os.exit(1)
+ end
+
+ display_session_id(ssl)
+ session_id = axtlsl.ssl_get_session_id(ssl)
+ sess_id_size = axtlsl.ssl_get_session_id_size(ssl)
+
+ if reconnect > 0 then
+ axtlsl.ssl_free(ssl)
+ client_sock:close()
+ client_sock = socket.try(socket.connect(host, port))
+ end
+
+ end
+ else
+ ssl = axtlsl.ssl_client_new(ssl_ctx, client_sock:getfd(), nil, 0)
+ end
+
+ -- check the return status
+ res = axtlsl.ssl_handshake_status(ssl)
+ if res ~= axtlsl.SSL_OK then
+ if not quiet then axtlsl.ssl_display_error(res) end
+ os.exit(1)
+ end
+
+ if not quiet then
+ local common_name = axtlsl.ssl_get_cert_dn(ssl,
+ axtlsl.SSL_X509_CERT_COMMON_NAME)
+
+ if common_name ~= nil then
+ print("Common Name:\t\t\t"..common_name)
+ end
+
+ display_session_id(ssl)
+ display_cipher(ssl)
+ end
+
+ while true do
+ local line = io.read()
+ if line == nil then break end
+ local bytes = {}
+
+ for i = 1, #line do
+ bytes[i] = line.byte(line, i)
+ end
+
+ bytes[#line+1] = 10 -- add carriage return, null
+ bytes[#line+2] = 0
+
+ res = axtlsl.ssl_write(ssl, bytes, #bytes)
+ if res < axtlsl.SSL_OK then
+ if not quiet then axtlsl.ssl_display_error(res) end
+ break
+ end
+ end
+
+ axtlsl.ssl_ctx_free(ssl_ctx)
+ client_sock:close()
+end
+
+--
+-- Display what cipher we are using
+--
+function display_cipher(ssl)
+ io.write("CIPHER is ")
+ local cipher_id = axtlsl.ssl_get_cipher_id(ssl)
+
+ if cipher_id == axtlsl.SSL_AES128_SHA then
+ print("AES128-SHA")
+ elseif cipher_id == axtlsl.SSL_AES256_SHA then
+ print("AES256-SHA")
+ elseif axtlsl.SSL_RC4_128_SHA then
+ print("RC4-SHA")
+ elseif axtlsl.SSL_RC4_128_MD5 then
+ print("RC4-MD5")
+ else
+ print("Unknown - "..cipher_id)
+ end
+end
+
+--
+-- Display what session id we have.
+--
+function display_session_id(ssl)
+ local session_id = axtlsl.ssl_get_session_id(ssl)
+ local v
+
+ if #session_id > 0 then
+ print("-----BEGIN SSL SESSION PARAMETERS-----")
+ for _, v in ipairs(session_id) do
+ io.write(string.format("%02x", v))
+ end
+ print("\n-----END SSL SESSION PARAMETERS-----")
+ end
+end
+
+--
+-- Main entry point. Doesn't do much except works out whether we are a client
+-- or a server.
+--
+if #arg == 0 or (arg[1] ~= "s_server" and arg[1] ~= "s_client") then
+ print_options(#arg > 0 and arg[1] or "")
+end
+
+local build_mode = axtlsl.ssl_get_config(axtlsl.SSL_BUILD_MODE)
+_ = arg[1] == "s_server" and do_server(build_mode) or do_client(build_mode)
+os.exit(0)
+
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