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+/*
+ * 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 Java 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:
+ * > java -jar axtls.jar s_server -?
+ * > java -jar axtls.jar s_client -?
+ *
+ * The axtls/axtlsj shared libraries must be in the same directory or be found
+ * by the OS.
+ */
+
+import java.io.*;
+import java.util.*;
+import java.net.*;
+import axTLSj.*;
+
+public class axssl
+{
+ /*
+ * Main()
+ */
+ public static void main(String[] args)
+ {
+ if (args.length == 1 && args[0].equals("version"))
+ {
+ System.out.println("axtls.jar " + SSLUtil.version());
+ System.exit(0);
+ }
+
+ axssl runner = new axssl();
+
+ try
+ {
+ if (args.length < 1 ||
+ (!args[0].equals("s_server") &&
+ !args[0].equals("s_client")))
+ {
+ runner.print_options(args.length > 0 ? args[0] : "");
+ }
+
+ int build_mode = SSLUtil.buildMode();
+
+ if (args[0].equals("s_server"))
+ runner.do_server(build_mode, args);
+ else
+ runner.do_client(build_mode, args);
+ }
+ catch (Exception e)
+ {
+ System.out.println(e);
+ }
+ }
+
+ /*
+ * do_server()
+ */
+ private void do_server(int build_mode, String[] args)
+ throws Exception
+ {
+ int i = 1;
+ int port = 4433;
+ int options = axtlsj.SSL_DISPLAY_CERTS;
+ boolean quiet = false;
+ String password = null;
+ String private_key_file = null;
+
+ /* organise the cert/ca_cert lists */
+ int cert_size = SSLUtil.maxCerts();
+ int ca_cert_size = SSLUtil.maxCACerts();
+ String[] cert = new String[cert_size];
+ String[] ca_cert = new String[ca_cert_size];
+ int cert_index = 0;
+ int ca_cert_index = 0;
+
+ while (i < args.length)
+ {
+ if (args[i].equals("-accept"))
+ {
+ if (i >= args.length-1)
+ {
+ print_server_options(build_mode, args[i]);
+ }
+
+ port = Integer.parseInt(args[++i]);
+ }
+ else if (args[i].equals("-quiet"))
+ {
+ quiet = true;
+ options &= ~(int)axtlsj.SSL_DISPLAY_CERTS;
+ }
+ else if (build_mode >= axtlsj.SSL_BUILD_SERVER_ONLY)
+ {
+ if (args[i].equals("-cert"))
+ {
+ if (i >= args.length-1 || cert_index >= cert_size)
+ {
+ print_server_options(build_mode, args[i]);
+ }
+
+ cert[cert_index++] = args[++i];
+ }
+ else if (args[i].equals("-key"))
+ {
+ if (i >= args.length-1)
+ {
+ print_server_options(build_mode, args[i]);
+ }
+
+ private_key_file = args[++i];
+ options |= axtlsj.SSL_NO_DEFAULT_KEY;
+ }
+ else if (args[i].equals("-pass"))
+ {
+ if (i >= args.length-1)
+ {
+ print_server_options(build_mode, args[i]);
+ }
+
+ password = args[++i];
+ }
+ else if (build_mode >= axtlsj.SSL_BUILD_ENABLE_VERIFICATION)
+ {
+ if (args[i].equals("-verify"))
+ {
+ options |= axtlsj.SSL_CLIENT_AUTHENTICATION;
+ }
+ else if (args[i].equals("-CAfile"))
+ {
+ if (i >= args.length-1 || ca_cert_index >= ca_cert_size)
+ {
+ print_server_options(build_mode, args[i]);
+ }
+
+ ca_cert[ca_cert_index++] = args[++i];
+ }
+ else if (build_mode == axtlsj.SSL_BUILD_FULL_MODE)
+ {
+ if (args[i].equals("-debug"))
+ {
+ options |= axtlsj.SSL_DISPLAY_BYTES;
+ }
+ else if (args[i].equals("-state"))
+ {
+ options |= axtlsj.SSL_DISPLAY_STATES;
+ }
+ else if (args[i].equals("-show-rsa"))
+ {
+ options |= axtlsj.SSL_DISPLAY_RSA;
+ }
+ else
+ print_server_options(build_mode, args[i]);
+ }
+ else
+ print_server_options(build_mode, args[i]);
+ }
+ else
+ print_server_options(build_mode, args[i]);
+ }
+ else
+ print_server_options(build_mode, args[i]);
+
+ i++;
+ }
+
+ /* Create socket for incoming connections */
+ ServerSocket server_sock = new ServerSocket(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.
+ **********************************************************************/
+ SSLServer ssl_ctx = new SSLServer(options,
+ axtlsj.SSL_DEFAULT_SVR_SESS);
+
+ if (ssl_ctx == null)
+ throw new Exception("Error: Server context is invalid");
+
+ if (private_key_file != null)
+ {
+ int obj_type = axtlsj.SSL_OBJ_RSA_KEY;
+
+ if (private_key_file.endsWith(".p8"))
+ obj_type = axtlsj.SSL_OBJ_PKCS8;
+ else if (private_key_file.endsWith(".p12"))
+ obj_type = axtlsj.SSL_OBJ_PKCS12;
+
+ if (ssl_ctx.objLoad(obj_type,
+ private_key_file, password) != axtlsj.SSL_OK)
+ {
+ throw new Exception("Error: Private key '" + private_key_file +
+ "' is undefined.");
+ }
+ }
+
+ for (i = 0; i < cert_index; i++)
+ {
+ if (ssl_ctx.objLoad(axtlsj.SSL_OBJ_X509_CERT,
+ cert[i], null) != axtlsj.SSL_OK)
+ {
+ throw new Exception("Certificate '" + cert[i] +
+ "' is undefined.");
+ }
+ }
+
+ for (i = 0; i < ca_cert_index; i++)
+ {
+ if (ssl_ctx.objLoad(axtlsj.SSL_OBJ_X509_CACERT,
+ ca_cert[i], null) != axtlsj.SSL_OK)
+ {
+ throw new Exception("Certificate '" + ca_cert[i] +
+ "' is undefined.");
+ }
+ }
+
+ int res;
+ SSLReadHolder rh = new SSLReadHolder();
+
+ for (;;)
+ {
+ if (!quiet)
+ {
+ System.out.println("ACCEPT");
+ }
+
+ Socket client_sock = server_sock.accept();
+
+ SSL ssl = ssl_ctx.connect(client_sock);
+
+ while ((res = ssl_ctx.read(ssl, rh)) == axtlsj.SSL_OK)
+ {
+ /* check when the connection has been established */
+ if (ssl.handshakeStatus() == axtlsj.SSL_OK)
+ break;
+
+ /* could do something else here */
+ }
+
+ if (res == axtlsj.SSL_OK) /* connection established and ok */
+ {
+ if (!quiet)
+ {
+ display_session_id(ssl);
+ display_cipher(ssl);
+ }
+
+ /* now read (and display) whatever the client sends us */
+ for (;;)
+ {
+ /* keep reading until we get something interesting */
+ while ((res = ssl_ctx.read(ssl, rh)) == axtlsj.SSL_OK)
+ {
+ /* could do something else here */
+ }
+
+ if (res < axtlsj.SSL_OK)
+ {
+ if (!quiet)
+ {
+ System.out.println("CONNECTION CLOSED");
+ }
+
+ break;
+ }
+
+ /* convert to String */
+ byte[] buf = rh.getData();
+ char[] str = new char[res];
+
+ for (i = 0; i < res; i++)
+ {
+ str[i] = (char)buf[i];
+ }
+
+ System.out.print(str);
+ }
+ }
+ else if (!quiet)
+ {
+ SSLUtil.displayError(res);
+ }
+
+ /* client was disconnected or the handshake failed. */
+ ssl.dispose();
+ client_sock.close();
+ }
+
+ /* ssl_ctx.dispose(); */
+ }
+
+ /*
+ * do_client()
+ */
+ private void do_client(int build_mode, String[] args)
+ throws Exception
+ {
+ if (build_mode < axtlsj.SSL_BUILD_ENABLE_CLIENT)
+ print_client_options(build_mode, args[1]);
+
+ int i = 1, res;
+ int port = 4433;
+ boolean quiet = false;
+ String password = null;
+ int reconnect = 0;
+ String private_key_file = null;
+ String hostname = "127.0.0.1";
+
+ /* organise the cert/ca_cert lists */
+ int cert_index = 0;
+ int ca_cert_index = 0;
+ int cert_size = SSLUtil.maxCerts();
+ int ca_cert_size = SSLUtil.maxCACerts();
+ String[] cert = new String[cert_size];
+ String[] ca_cert = new String[ca_cert_size];
+
+ int options = axtlsj.SSL_SERVER_VERIFY_LATER|axtlsj.SSL_DISPLAY_CERTS;
+ byte[] session_id = null;
+
+ while (i < args.length)
+ {
+ if (args[i].equals("-connect"))
+ {
+ String host_port;
+
+ if (i >= args.length-1)
+ {
+ print_client_options(build_mode, args[i]);
+ }
+
+ host_port = args[++i];
+ int index_colon;
+
+ if ((index_colon = host_port.indexOf(':')) < 0)
+ print_client_options(build_mode, args[i]);
+
+ hostname = new String(host_port.toCharArray(),
+ 0, index_colon);
+ port = Integer.parseInt(new String(host_port.toCharArray(),
+ index_colon+1, host_port.length()-index_colon-1));
+ }
+ else if (args[i].equals("-cert"))
+ {
+ if (i >= args.length-1 || cert_index >= cert_size)
+ {
+ print_client_options(build_mode, args[i]);
+ }
+
+ cert[cert_index++] = args[++i];
+ }
+ else if (args[i].equals("-CAfile"))
+ {
+ if (i >= args.length-1 || ca_cert_index >= ca_cert_size)
+ {
+ print_client_options(build_mode, args[i]);
+ }
+
+ ca_cert[ca_cert_index++] = args[++i];
+ }
+ else if (args[i].equals("-key"))
+ {
+ if (i >= args.length-1)
+ {
+ print_client_options(build_mode, args[i]);
+ }
+
+ private_key_file = args[++i];
+ options |= axtlsj.SSL_NO_DEFAULT_KEY;
+ }
+ else if (args[i].equals("-verify"))
+ {
+ options &= ~(int)axtlsj.SSL_SERVER_VERIFY_LATER;
+ }
+ else if (args[i].equals("-reconnect"))
+ {
+ reconnect = 4;
+ }
+ else if (args[i].equals("-quiet"))
+ {
+ quiet = true;
+ options &= ~(int)axtlsj.SSL_DISPLAY_CERTS;
+ }
+ else if (args[i].equals("-pass"))
+ {
+ if (i >= args.length-1)
+ {
+ print_server_options(build_mode, args[i]);
+ }
+
+ password = args[++i];
+ }
+ else if (build_mode == axtlsj.SSL_BUILD_FULL_MODE)
+ {
+ if (args[i].equals("-debug"))
+ {
+ options |= axtlsj.SSL_DISPLAY_BYTES;
+ }
+ else if (args[i].equals("-state"))
+ {
+ options |= axtlsj.SSL_DISPLAY_STATES;
+ }
+ else if (args[i].equals("-show-rsa"))
+ {
+ options |= axtlsj.SSL_DISPLAY_RSA;
+ }
+ else
+ print_client_options(build_mode, args[i]);
+ }
+ else /* don't know what this is */
+ print_client_options(build_mode, args[i]);
+
+ i++;
+ }
+
+ Socket client_sock = new Socket(hostname, port);
+
+ if (!client_sock.isConnected())
+ {
+ System.out.println("could not connect");
+ throw new Exception();
+ }
+
+ if (!quiet)
+ {
+ System.out.println("CONNECTED");
+ }
+
+ /**********************************************************************
+ * This is where the interesting stuff happens. Up until now we've
+ * just been setting up sockets etc. Now we do the SSL handshake.
+ **********************************************************************/
+ SSLClient ssl_ctx = new SSLClient(options,
+ axtlsj.SSL_DEFAULT_CLNT_SESS);
+
+ if (ssl_ctx == null)
+ {
+ throw new Exception("Error: Client context is invalid");
+ }
+
+ if (private_key_file != null)
+ {
+ int obj_type = axtlsj.SSL_OBJ_RSA_KEY;
+
+ if (private_key_file.endsWith(".p8"))
+ obj_type = axtlsj.SSL_OBJ_PKCS8;
+ else if (private_key_file.endsWith(".p12"))
+ obj_type = axtlsj.SSL_OBJ_PKCS12;
+
+ if (ssl_ctx.objLoad(obj_type,
+ private_key_file, password) != axtlsj.SSL_OK)
+ {
+ throw new Exception("Error: Private key '" + private_key_file +
+ "' is undefined.");
+ }
+ }
+
+ for (i = 0; i < cert_index; i++)
+ {
+ if (ssl_ctx.objLoad(axtlsj.SSL_OBJ_X509_CERT,
+ cert[i], null) != axtlsj.SSL_OK)
+ {
+ throw new Exception("Certificate '" + cert[i] +
+ "' is undefined.");
+ }
+ }
+
+ for (i = 0; i < ca_cert_index; i++)
+ {
+ if (ssl_ctx.objLoad(axtlsj.SSL_OBJ_X509_CACERT,
+ ca_cert[i], null) != axtlsj.SSL_OK)
+ {
+ throw new Exception("Certificate '" + ca_cert[i] +
+ "' is undefined.");
+ }
+ }
+
+ SSL ssl = null;
+
+ /* Try session resumption? */
+ if (reconnect > 0)
+ {
+ while (reconnect-- > 0)
+ {
+ ssl = ssl_ctx.connect(client_sock, session_id);
+
+ if ((res = ssl.handshakeStatus()) != axtlsj.SSL_OK)
+ {
+ if (!quiet)
+ {
+ SSLUtil.displayError(res);
+ }
+
+ ssl.dispose();
+ throw new Exception();
+ }
+
+ display_session_id(ssl);
+ session_id = ssl.getSessionId();
+
+ if (reconnect > 0)
+ {
+ ssl.dispose();
+ client_sock.close();
+
+ /* and reconnect */
+ client_sock = new Socket(hostname, port);
+ }
+ }
+ }
+ else
+ {
+ ssl = ssl_ctx.connect(client_sock, null);
+ }
+
+ /* check the return status */
+ if ((res = ssl.handshakeStatus()) != axtlsj.SSL_OK)
+ {
+ if (!quiet)
+ {
+ SSLUtil.displayError(res);
+ }
+
+ throw new Exception();
+ }
+
+ if (!quiet)
+ {
+ String common_name =
+ ssl.getCertificateDN(axtlsj.SSL_X509_CERT_COMMON_NAME);
+
+ if (common_name != null)
+ {
+ System.out.println("Common Name:\t\t\t" + common_name);
+ }
+
+ display_session_id(ssl);
+ display_cipher(ssl);
+ }
+
+ BufferedReader in = new BufferedReader(
+ new InputStreamReader(System.in));
+
+ for (;;)
+ {
+ String user_input = in.readLine();
+
+ if (user_input == null)
+ break;
+
+ byte[] buf = new byte[user_input.length()+2];
+ buf[buf.length-2] = (byte)'\n'; /* add the carriage return */
+ buf[buf.length-1] = 0; /* null terminate */
+
+ for (i = 0; i < buf.length-2; i++)
+ {
+ buf[i] = (byte)user_input.charAt(i);
+ }
+
+ if ((res = ssl_ctx.write(ssl, buf)) < axtlsj.SSL_OK)
+ {
+ if (!quiet)
+ {
+ SSLUtil.displayError(res);
+ }
+
+ break;
+ }
+ }
+
+ ssl_ctx.dispose();
+ }
+
+ /**
+ * We've had some sort of command-line error. Print out the basic options.
+ */
+ private void print_options(String option)
+ {
+ System.out.println("axssl: Error: '" + option +
+ "' is an invalid command.");
+ System.out.println("usage: axtlsj.jar [s_server|s_client|version] " +
+ "[args ...]");
+ System.exit(1);
+ }
+
+ /**
+ * We've had some sort of command-line error. Print out the server options.
+ */
+ private void print_server_options(int build_mode, String option)
+ {
+ int cert_size = SSLUtil.maxCerts();
+ int ca_cert_size = SSLUtil.maxCACerts();
+
+ System.out.println("unknown option " + option);
+ System.out.println("usage: s_server [args ...]");
+ System.out.println(" -accept arg\t- port to accept on (default " +
+ "is 4433)");
+ System.out.println(" -quiet\t\t- No server output");
+
+ if (build_mode >= axtlsj.SSL_BUILD_SERVER_ONLY)
+ {
+ System.out.println(" -cert arg\t- certificate file to add (in " +
+ "addition to default) to chain -");
+ System.out.println("\t\t Can repeat up to " + cert_size + " times");
+ System.out.println(" -key arg\t- Private key file to use");
+ System.out.println(" -pass\t\t- private key file pass phrase source");
+ }
+
+ if (build_mode >= axtlsj.SSL_BUILD_ENABLE_VERIFICATION)
+ {
+ System.out.println(" -verify\t- turn on peer certificate " +
+ "verification");
+ System.out.println(" -CAfile arg\t- Certificate authority. ");
+ System.out.println("\t\t Can repeat up to " +
+ ca_cert_size + " times");
+ }
+
+ if (build_mode == axtlsj.SSL_BUILD_FULL_MODE)
+ {
+ System.out.println(" -debug\t\t- Print more output");
+ System.out.println(" -state\t\t- Show state messages");
+ System.out.println(" -show-rsa\t- Show RSA state");
+ }
+
+ System.exit(1);
+ }
+
+ /**
+ * We've had some sort of command-line error. Print out the client options.
+ */
+ private void print_client_options(int build_mode, String option)
+ {
+ int cert_size = SSLUtil.maxCerts();
+ int ca_cert_size = SSLUtil.maxCACerts();
+
+ System.out.println("unknown option " + option);
+
+ if (build_mode >= axtlsj.SSL_BUILD_ENABLE_CLIENT)
+ {
+ System.out.println("usage: s_client [args ...]");
+ System.out.println(" -connect host:port - who to connect to " +
+ "(default is localhost:4433)");
+ System.out.println(" -verify\t- turn on peer certificate " +
+ "verification");
+ System.out.println(" -cert arg\t- certificate file to use");
+ System.out.println(" -key arg\t- Private key file to use");
+ System.out.println("\t\t Can repeat up to " + cert_size +
+ " times");
+ System.out.println(" -CAfile arg\t- Certificate authority.");
+ System.out.println("\t\t Can repeat up to " + ca_cert_size +
+ " times");
+ System.out.println(" -quiet\t\t- No client output");
+ System.out.println(" -pass\t\t- private key file pass " +
+ "phrase source");
+ System.out.println(" -reconnect\t- Drop and re-make the " +
+ "connection with the same Session-ID");
+
+ if (build_mode == axtlsj.SSL_BUILD_FULL_MODE)
+ {
+ System.out.println(" -debug\t\t- Print more output");
+ System.out.println(" -state\t\t- Show state messages");
+ System.out.println(" -show-rsa\t- Show RSA state");
+ }
+ }
+ else
+ {
+ System.out.println("Change configuration to allow this feature");
+ }
+
+ System.exit(1);
+ }
+
+ /**
+ * Display what cipher we are using
+ */
+ private void display_cipher(SSL ssl)
+ {
+ System.out.print("CIPHER is ");
+
+ byte ciph_id = ssl.getCipherId();
+
+ if (ciph_id == axtlsj.SSL_AES128_SHA)
+ System.out.println("AES128-SHA");
+ else if (ciph_id == axtlsj.SSL_AES256_SHA)
+ System.out.println("AES256-SHA");
+ else if (ciph_id == axtlsj.SSL_RC4_128_SHA)
+ System.out.println("RC4-SHA");
+ else if (ciph_id == axtlsj.SSL_RC4_128_MD5)
+ System.out.println("RC4-MD5");
+ else
+ System.out.println("Unknown - " + ssl.getCipherId());
+ }
+
+ public char toHexChar(int i)
+ {
+ if ((0 <= i) && (i <= 9 ))
+ return (char)('0' + i);
+ else
+ return (char)('a' + (i-10));
+ }
+
+ public void bytesToHex(byte[] data)
+ {
+ StringBuffer buf = new StringBuffer();
+ for (int i = 0; i < data.length; i++ )
+ {
+ buf.append(toHexChar((data[i]>>>4)&0x0F));
+ buf.append(toHexChar(data[i]&0x0F));
+ }
+
+ System.out.println(buf);
+ }
+
+
+ /**
+ * Display what session id we have.
+ */
+ private void display_session_id(SSL ssl)
+ {
+ byte[] session_id = ssl.getSessionId();
+
+ if (session_id.length > 0)
+ {
+ System.out.println("-----BEGIN SSL SESSION PARAMETERS-----");
+ bytesToHex(session_id);
+ System.out.println("-----END SSL SESSION PARAMETERS-----");
+ }
+ }
+}
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