Split out non record layer functions out of s3_pkt.c and d1_pkt.c into

the new files s3_msg.c and s1_msg.c respectively.

Reviewed-by: Richard Levitte <levitte@openssl.org>

1 files changed, 226 insertions, 0 deletions

diff --git a/ssl/s3_msg.c b/ssl/s3_msg.c
new file mode 100644
index 0000000000..8fc92c1d47
--- /dev/null
+++ b/ssl/s3_msg.c
@@ -0,0 +1,226 @@
+/* ssl/s3_msg.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2015 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#define USE_SOCKETS
+#include "ssl_locl.h"
+
+int ssl3_do_change_cipher_spec(SSL *s)
+{
+    int i;
+    const char *sender;
+    int slen;
+
+    if (s->state & SSL_ST_ACCEPT)
+        i = SSL3_CHANGE_CIPHER_SERVER_READ;
+    else
+        i = SSL3_CHANGE_CIPHER_CLIENT_READ;
+
+    if (s->s3->tmp.key_block == NULL) {
+        if (s->session == NULL || s->session->master_key_length == 0) {
+            /* might happen if dtls1_read_bytes() calls this */
+            SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC,
+                   SSL_R_CCS_RECEIVED_EARLY);
+            return (0);
+        }
+
+        s->session->cipher = s->s3->tmp.new_cipher;
+        if (!s->method->ssl3_enc->setup_key_block(s))
+            return (0);
+    }
+
+    if (!s->method->ssl3_enc->change_cipher_state(s, i))
+        return (0);
+
+    /*
+     * we have to record the message digest at this point so we can get it
+     * before we read the finished message
+     */
+    if (s->state & SSL_ST_CONNECT) {
+        sender = s->method->ssl3_enc->server_finished_label;
+        slen = s->method->ssl3_enc->server_finished_label_len;
+    } else {
+        sender = s->method->ssl3_enc->client_finished_label;
+        slen = s->method->ssl3_enc->client_finished_label_len;
+    }
+
+    i = s->method->ssl3_enc->final_finish_mac(s,
+                                              sender, slen,
+                                              s->s3->tmp.peer_finish_md);
+    if (i == 0) {
+        SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC, ERR_R_INTERNAL_ERROR);
+        return 0;
+    }
+    s->s3->tmp.peer_finish_md_len = i;
+
+    return (1);
+}
+
+int ssl3_send_alert(SSL *s, int level, int desc)
+{
+    /* Map tls/ssl alert value to correct one */
+    desc = s->method->ssl3_enc->alert_value(desc);
+    if (s->version == SSL3_VERSION && desc == SSL_AD_PROTOCOL_VERSION)
+        desc = SSL_AD_HANDSHAKE_FAILURE; /* SSL 3.0 does not have
+                                          * protocol_version alerts */
+    if (desc < 0)
+        return -1;
+    /* If a fatal one, remove from cache */
+    if ((level == SSL3_AL_FATAL) && (s->session != NULL))
+        SSL_CTX_remove_session(s->ctx, s->session);
+
+    s->s3->alert_dispatch = 1;
+    s->s3->send_alert[0] = level;
+    s->s3->send_alert[1] = desc;
+    if (SSL3_BUFFER_get_left(RECORD_LAYER_get_wbuf(&s->rlayer)) == 0) {
+        /* data still being written out? */
+        return s->method->ssl_dispatch_alert(s);
+    }
+    /*
+     * else data is still being written out, we will get written some time in
+     * the future
+     */
+    return -1;
+}
+
+int ssl3_dispatch_alert(SSL *s)
+{
+    int i, j;
+    void (*cb) (const SSL *ssl, int type, int val) = NULL;
+
+    s->s3->alert_dispatch = 0;
+    i = do_ssl3_write(s, SSL3_RT_ALERT, &s->s3->send_alert[0], 2, 0);
+    if (i <= 0) {
+        s->s3->alert_dispatch = 1;
+    } else {
+        /*
+         * Alert sent to BIO.  If it is important, flush it now. If the
+         * message does not get sent due to non-blocking IO, we will not
+         * worry too much.
+         */
+        if (s->s3->send_alert[0] == SSL3_AL_FATAL)
+            (void)BIO_flush(s->wbio);
+
+        if (s->msg_callback)
+            s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert,
+                            2, s, s->msg_callback_arg);
+
+        if (s->info_callback != NULL)
+            cb = s->info_callback;
+        else if (s->ctx->info_callback != NULL)
+            cb = s->ctx->info_callback;
+
+        if (cb != NULL) {
+            j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1];
+            cb(s, SSL_CB_WRITE_ALERT, j);
+        }
+    }
+    return (i);
+}