230 lines
8.6 KiB
Java
230 lines
8.6 KiB
Java
/*
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* Copyright (c) 2007, Cameron Rich
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of the axTLS project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* A wrapper around the unmanaged interface to give a semi-decent Java API
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*/
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package axTLSj;
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import java.net.*;
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/**
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* @class SSLCTX
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* @ingroup java_api
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* @brief A base object for SSLServer/SSLClient.
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*/
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public class SSLCTX
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{
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/**
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* A reference to the real client/server context.
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*/
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protected int m_ctx;
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/**
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* @brief Establish a new client/server context.
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*
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* This function is called before any client/server SSL connections are
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* made. If multiple threads are used, then each thread will have its
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* own SSLCTX context. Any number of connections may be made with a single
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* context.
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*
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* Each new connection will use the this context's private key and
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* certificate chain. If a different certificate chain is required, then a
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* different context needs to be be used.
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*
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* @param options [in] Any particular options. At present the options
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* supported are:
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* - SSL_SERVER_VERIFY_LATER (client only): Don't stop a handshake if the
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* server authentication fails. The certificate can be authenticated later
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* with a call to verifyCert().
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* - SSL_CLIENT_AUTHENTICATION (server only): Enforce client authentication
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* i.e. each handshake will include a "certificate request" message from
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* the server.
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* - SSL_DISPLAY_BYTES (full mode build only): Display the byte sequences
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* during the handshake.
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* - SSL_DISPLAY_STATES (full mode build only): Display the state changes
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* during the handshake.
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* - SSL_DISPLAY_CERTS (full mode build only): Display the certificates that
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* are passed during a handshake.
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* - SSL_DISPLAY_RSA (full mode build only): Display the RSA key details
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* that are passed during a handshake.
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*
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* @param num_sessions [in] The number of sessions to be used for session
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* caching. If this value is 0, then there is no session caching.
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*
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* If this option is null, then the default internal private key/
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* certificate pair is used (if CONFIG_SSL_USE_DEFAULT_KEY is set).
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*
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* The resources used by this object are automatically freed.
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* @return A client/server context.
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*/
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protected SSLCTX(int options, int num_sessions)
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{
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m_ctx = axtlsj.ssl_ctx_new(options, num_sessions);
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}
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/**
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* @brief Remove a client/server context.
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*
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* Frees any used resources used by this context. Each connection will be
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* sent a "Close Notify" alert (if possible).
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*/
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public void dispose()
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{
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axtlsj.ssl_ctx_free(m_ctx);
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}
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/**
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* @brief Read the SSL data stream.
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* @param ssl [in] An SSL object reference.
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* @param rh [out] After a successful read, the decrypted data can be
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* retrieved with rh.getData(). It will be null otherwise.
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* @return The number of decrypted bytes:
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* - if > 0, then the handshaking is complete and we are returning the
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* number of decrypted bytes.
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* - SSL_OK if the handshaking stage is successful (but not yet complete).
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* - < 0 if an error.
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* @see ssl.h for the error code list.
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* @note Use rh before doing any successive ssl calls.
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*/
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public int read(SSL ssl, SSLReadHolder rh)
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{
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return axtlsj.ssl_read(ssl.m_ssl, rh);
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}
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/**
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* @brief Write to the SSL data stream.
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* @param ssl [in] An SSL obect reference.
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* @param out_data [in] The data to be written
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* @return The number of bytes sent, or if < 0 if an error.
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* @see ssl.h for the error code list.
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*/
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public int write(SSL ssl, byte[] out_data)
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{
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return axtlsj.ssl_write(ssl.m_ssl, out_data, out_data.length);
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}
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/**
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* @brief Write to the SSL data stream.
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* @param ssl [in] An SSL obect reference.
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* @param out_data [in] The data to be written
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* @param out_len [in] The number of bytes to be written
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* @return The number of bytes sent, or if < 0 if an error.
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* @see ssl.h for the error code list.
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*/
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public int write(SSL ssl, byte[] out_data, int out_len)
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{
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return axtlsj.ssl_write(ssl.m_ssl, out_data, out_len);
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}
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/**
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* @brief Find an ssl object based on a Socket reference.
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*
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* Goes through the list of SSL objects maintained in a client/server
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* context to look for a socket match.
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* @param s [in] A reference to a <A HREF="http://java.sun.com/j2se/1.4.2/docs/api">Socket</A> object.
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* @return A reference to the SSL object. Returns null if the object
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* could not be found.
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*/
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public SSL find(Socket s)
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{
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int client_fd = axtlsj.getFd(s);
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return new SSL(axtlsj.ssl_find(m_ctx, client_fd));
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}
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/**
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* @brief Authenticate a received certificate.
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*
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* This call is usually made by a client after a handshake is complete
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* and the context is in SSL_SERVER_VERIFY_LATER mode.
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* @param ssl [in] An SSL object reference.
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* @return SSL_OK if the certificate is verified.
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*/
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public int verifyCert(SSL ssl)
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{
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return axtlsj.ssl_verify_cert(ssl.m_ssl);
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}
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/**
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* @brief Force the client to perform its handshake again.
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*
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* For a client this involves sending another "client hello" message.
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* For the server is means sending a "hello request" message.
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*
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* This is a blocking call on the client (until the handshake completes).
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* @param ssl [in] An SSL object reference.
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* @return SSL_OK if renegotiation instantiation was ok
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*/
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public int renegotiate(SSL ssl)
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{
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return axtlsj.ssl_renegotiate(ssl.m_ssl);
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}
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/**
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* @brief Load a file into memory that is in binary DER or ASCII PEM format.
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*
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* These are temporary objects that are used to load private keys,
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* certificates etc into memory.
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* @param obj_type [in] The format of the file. Can be one of:
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* - SSL_OBJ_X509_CERT (no password required)
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* - SSL_OBJ_X509_CACERT (no password required)
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* - SSL_OBJ_RSA_KEY (AES128/AES256 PEM encryption supported)
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* - SSL_OBJ_P8 (RC4-128 encrypted data supported)
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* - SSL_OBJ_P12 (RC4-128 encrypted data supported)
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*
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* PEM files are automatically detected (if supported).
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* @param filename [in] The location of a file in DER/PEM format.
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* @param password [in] The password used. Can be null if not required.
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* @return SSL_OK if all ok
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*/
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public int objLoad(int obj_type, String filename, String password)
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{
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return axtlsj.ssl_obj_load(m_ctx, obj_type, filename, password);
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}
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/**
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* @brief Transfer binary data into the object loader.
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*
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* These are temporary objects that are used to load private keys,
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* certificates etc into memory.
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* @param obj_type [in] The format of the memory data.
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* @param data [in] The binary data to be loaded.
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* @param len [in] The amount of data to be loaded.
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* @param password [in] The password used. Can be null if not required.
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* @return SSL_OK if all ok
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*/
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public int objLoad(int obj_type, byte[] data, int len, String password)
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{
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return axtlsj.ssl_obj_memory_load(m_ctx, obj_type, data, len, password);
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}
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}
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