X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;ds=sidebyside;f=ssl%2Fssl_lib.c;h=359260e1f561475b67e28ae5d7f893dd6a9e9d4c;hb=e70656cf1c9e886344913444fe2f3a0b7d3721a9;hp=9d189aa51c08436afd837541113f5450910acfc3;hpb=dccd20d1b55d15afdc80ad987ff37023d323dc42;p=openssl.git

diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 9d189aa51c..359260e1f5 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1,115 +1,12 @@
 /*
- * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
- */
-/* 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) 1998-2007 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).
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
  *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
+
 /* ====================================================================
  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  * ECC cipher suite support in OpenSSL originally developed by
@@ -693,7 +590,7 @@ SSL *SSL_new(SSL_CTX *ctx)
     s->tlsext_debug_cb = 0;
     s->tlsext_debug_arg = NULL;
     s->tlsext_ticket_expected = 0;
-    s->tlsext_status_type = -1;
+    s->tlsext_status_type = ctx->tlsext_status_type;
     s->tlsext_status_expected = 0;
     s->tlsext_ocsp_ids = NULL;
     s->tlsext_ocsp_exts = NULL;
@@ -774,10 +671,21 @@ SSL *SSL_new(SSL_CTX *ctx)
     return NULL;
 }
 
-void SSL_up_ref(SSL *s)
+int SSL_is_dtls(const SSL *s)
+{
+    return SSL_IS_DTLS(s) ? 1 : 0;
+}
+
+int SSL_up_ref(SSL *s)
 {
     int i;
-    CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
+
+    if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("SSL", s);
+    REF_ASSERT_ISNT(i < 2);
+    return ((i > 1) ? 1 : 0);
 }
 
 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
@@ -843,9 +751,9 @@ int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
     r.session_id_length = id_len;
     memcpy(r.session_id, id, id_len);
 
-    CRYPTO_THREAD_read_lock(ssl->ctx->lock);
-    p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
-    CRYPTO_THREAD_unlock(ssl->ctx->lock);
+    CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
+    p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
+    CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
     return (p != NULL);
 }
 
@@ -1040,9 +948,9 @@ void SSL_free(SSL *s)
         BIO_free(s->bbio);
         s->bbio = NULL;
     }
-    BIO_free_all(s->rbio);
     if (s->wbio != s->rbio)
         BIO_free_all(s->wbio);
+    BIO_free_all(s->rbio);
 
     BUF_MEM_free(s->init_buf);
 
@@ -2455,10 +2363,10 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
     ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
     ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
 
-    /* Setup RFC4507 ticket keys */
-    if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
-        || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
-        || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
+    /* Setup RFC5077 ticket keys */
+    if ((RAND_bytes(ret->tlsext_tick_key_name, sizeof(ret->tlsext_tick_key_name)) <= 0)
+        || (RAND_bytes(ret->tlsext_tick_hmac_key, sizeof(ret->tlsext_tick_hmac_key)) <= 0)
+        || (RAND_bytes(ret->tlsext_tick_aes_key, sizeof(ret->tlsext_tick_aes_key)) <= 0))
         ret->options |= SSL_OP_NO_TICKET;
 
 #ifndef OPENSSL_NO_SRP
@@ -2496,6 +2404,8 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
      */
     ret->options |= SSL_OP_NO_COMPRESSION;
 
+    ret->tlsext_status_type = -1;
+
     return ret;
  err:
     SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
@@ -2504,10 +2414,16 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
     return NULL;
 }
 
-void SSL_CTX_up_ref(SSL_CTX *ctx)
+int SSL_CTX_up_ref(SSL_CTX *ctx)
 {
     int i;
-    CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock);
+
+    if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("SSL_CTX", ctx);
+    REF_ASSERT_ISNT(i < 2);
+    return ((i > 1) ? 1 : 0);
 }
 
 void SSL_CTX_free(SSL_CTX *a)
@@ -3309,34 +3225,27 @@ const COMP_METHOD *SSL_get_current_expansion(SSL *s)
 #endif
 }
 
-int ssl_init_wbio_buffer(SSL *s, int push)
+int ssl_init_wbio_buffer(SSL *s)
 {
     BIO *bbio;
 
     if (s->bbio == NULL) {
         bbio = BIO_new(BIO_f_buffer());
         if (bbio == NULL)
-            return (0);
+            return 0;
         s->bbio = bbio;
+        s->wbio = BIO_push(bbio, s->wbio);
     } else {
         bbio = s->bbio;
-        if (s->bbio == s->wbio)
-            s->wbio = BIO_pop(s->wbio);
+        (void)BIO_reset(bbio);
     }
-    (void)BIO_reset(bbio);
-/*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
+
     if (!BIO_set_read_buffer_size(bbio, 1)) {
         SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
-        return (0);
-    }
-    if (push) {
-        if (s->wbio != bbio)
-            s->wbio = BIO_push(bbio, s->wbio);
-    } else {
-        if (s->wbio == bbio)
-            s->wbio = BIO_pop(bbio);
+        return 0;
     }
-    return (1);
+
+    return 1;
 }
 
 void ssl_free_wbio_buffer(SSL *s)
@@ -3381,17 +3290,22 @@ void SSL_set_shutdown(SSL *s, int mode)
 
 int SSL_get_shutdown(const SSL *s)
 {
-    return (s->shutdown);
+    return s->shutdown;
 }
 
 int SSL_version(const SSL *s)
 {
-    return (s->version);
+    return s->version;
+}
+
+int SSL_client_version(const SSL *s)
+{
+    return s->client_version;
 }
 
 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
 {
-    return (ssl->ctx);
+    return ssl->ctx;
 }
 
 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
@@ -3944,7 +3858,7 @@ static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t or
 err:
     if (sct != NULL)
         sk_SCT_push(src, sct); /* Put the SCT back */
-    return scts_moved;
+    return -1;
 }
 
 /*
@@ -4218,6 +4132,23 @@ int ssl_validate_ct(SSL *s)
 
 end:
     CT_POLICY_EVAL_CTX_free(ctx);
+    /*
+     * With SSL_VERIFY_NONE the session may be cached and re-used despite a
+     * failure return code here.  Also the application may wish the complete
+     * the handshake, and then disconnect cleanly at a higher layer, after
+     * checking the verification status of the completed connection.
+     *
+     * We therefore force a certificate verification failure which will be
+     * visible via SSL_get_verify_result() and cached as part of any resumed
+     * session.
+     *
+     * Note: the permissive callback is for information gathering only, always
+     * returns success, and does not affect verification status.  Only the
+     * strict callback or a custom application-specified callback can trigger
+     * connection failure or record a verification error.
+     */
+    if (ret <= 0)
+        s->verify_result = X509_V_ERR_NO_VALID_SCTS;
     return ret;
 }